Abstract
A device for manually or mechanically producing a tubular packaging material of a paper web is wound to form a roll, which forms an internal cavity, from which the paper web can be drawn to form packaging material. The device includes a receptacle for at least partially circumferentially encompassing the roll and an axial holder for holding an end face of the roll. The axial holder has a wall, in which a dispensing opening for dispensing the packaging material in an axial dispensing direction is formed. The wall has an inner guide contour, which tapers in a funnel-like manner in the axial dispensing direction from the receptacle to the dispensing opening. The wall is provided with at least one front axial recess at a front end of the axial holder in the axial dispensing direction.
Claims
1. A device for manually or mechanically producing a tubular packaging material of a paper web wound to form a roll, which forms an internal cavity, from which the paper web can be drawn to form the packaging material, the device comprising: a receptacle for at least partially circumferentially encompassing the roll; and an axial holder for holding an end face of the roll, wherein the axial holder has a wall, in which a dispensing opening for dispensing the packaging material in an axial dispensing direction (A) is formed, wherein the wall has an inner guide contour, which tapers in a funnel-like manner in the axial dispensing direction (A) from the receptacle to the dispensing opening, wherein the wall is provided with at least one front axial recess at a front end of the axial holder in the axial dispensing direction (A), which extends at least 10 millimemters in the axial dispensing direction (A), starting at the front end of the axial holder.
2. The device according to claim 1, wherein the wall for forming the at least one front axial recess bifurcates in the circumferential direction (U) and transversely to the axial dispensing direction (A) such that the width (w) of the front axial recess increases transversely to the axial dispensing direction (A) in the course of the axial recess in the axial dispensing direction (A).
3. The device according to claim 2, wherein the at least one front axial recess defines an acute opening angle () at least in a rear clamping section in the axial dispensing direction (A).
4. The device according to claim 3, wherein the outer edges of the wall located opposite one another in the circumferential direction, which limit the one front axial recess, run in a curved continuously rounded manner, such that the circumferential width (w) of this axial recess increases continuously in the axial dispensing direction (A).
5. The device according to claim 4, wherein the front end of the axial receptacle is formed by continuously rounded outer edges, wherein outer edges adjoining one another transition into one another continuously with constant curvature.
6. The device according claim 1, wherein the inner guide contour of the wall runs continuously in the axial dispensing direction (A), and is free from jumps or edges in the axial dispensing direction (A) starting at the front end of the axial holder to the receptacle, to connect directly to the receptacle, wherein in the axial dispensing direction (A), the inner guide contour runs linearly section by section or runs with a curvature section by section, wherein the radius of curvature of which is at least 1 cm, and sections which are linear in the axial dispensing direction and sections are curved in the axial dispensing direction transition continuously into one another free from steps, free from kinks and free from jumps.
7. The device according to claim 1, wherein maximally, front axial recesses are arranged at the front end of the axial holder in the axial dispensing direction (A), wherein exactly one front axial recess is arranged at the front end of the axial holder in the axial dispensing direction (A).
8. A device for manually or mechanically producing a tubular packaging material of a paper web wound to form a roll, which forms an internal cavity, from which the paper web can be drawn to form the packaging material and defines a roll axis (R), the device comprising: a receptacle for at least partially circumferentially encompassing the roll; and an axial holder for holding an end face of the roll, wherein the axial holder has a wall, in which a dispensing opening for dispensing the packaging material in an axial dispensing direction (A) is formed, wherein the wall has an inner guide contour, which tapers in a funnel-like manner in the axial dispensing direction (A) from the receptacle to the dispensing opening, and wherein the axial dispensing direction (A) is aligned transversely to the roll axis (R).
9. The device according to claim 8, wherein the wall defines a funnel axis with the inner guide contour, which tapers in a funnel-like manner, wherein a funnel opening angle () of at least 15 or maximally 75 is spanned between the funnel axis (T) and the inner guide contour.
10. The device according to claim 9, wherein the funnel axis (T) runs angled relative to the roll axis (R).
11. The device according to claim 10, wherein the axial dispensing direction (A), which intersects the dispensing opening in the center, is arranged offset and at an angle relative to the funnel axis (T).
12. The device according to claim 11, wherein the dispensing opening, which is surrounded by the wall, forms a circular passage surface perpendicular to the axial dispensing direction (A), which is arranged eccentrically relative to the roll axis (R), wherein the roll axis (R) does not interest the passage surface.
13. A device for manually or mechanically producing a tubular packaging material of a paper web wound to form a roll, which forms an internal cavity, from which the paper web can be drawn to form the packaging material, the device comprising: a receptacle for at least partially circumferentially encompassing the roll; and an axial holder for holding an end face of the roll, wherein the axial holder has a wall, in which a dispensing opening for dispensing the packaging material in an axial dispensing direction (A) is formed, wherein the wall has an inner guide contour, which tapers in a funnel-like manner in the axial dispensing direction (A) from the receptacle to the dispensing opening, wherein the wall is provided with at least one rear axial recess at a rear end of the axial holder in the axial dispensing direction (A), which extends at least 10 millimemters in the axial dispensing direction (A), starting at the rear end of the axial holder.
14. The device according to claim 13, wherein the at least one rear axial recess has an obtuse opening angle () in a front base section in the axial dispensing direction (A).
15. The device according to claim 14, wherein the wall limiting the at least one rear axial recess has at least one step, which protrudes in the circumferential direction, between the base section and the rear end of the axial holder.
16. The device according to claim 13, wherein the at least one rear axial recess has an access section, which extends over at least 10 millimemters in the axial direction (A) and the rims of this rear axial recess, which are located opposite one another in the circumferential direction, are spaced apart from one another by no less than 50 millimemters in the circumferential direction.
17. The device according to claim 13, comprising at least two front or rear axial recesses, wherein the at least two axial recesses are arranged rotationally symmetrically.
18. The device according to claim 13, wherein the at least one front or rear axial recess extends at least 20 millimemters in the axial dispensing direction (A).
19. The device according to claim 13, wherein the at least one front or rear axial recess extends at least in some sections in a radial direction (R) transversely to the axial dispensing direction (A).
20. The device according to claim 13, wherein the axial holder defines an essentially rectangular funnel base cross section in its entry area on the receptacle side.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0035] FIG. 1a shows a perspective view of a packaging material dispensing device according to the invention according to a first embodiment;
[0036] FIG. 1b shows a top view onto the device according to FIG. 1a;
[0037] FIG. 1c shows a side view of the device according to FIG. 1a;
[0038] FIG. 1d shows a detailed top view onto the dispensing opening of the device according to FIG. 1a according to the section I of FIG. 1b;
[0039] FIG. 2a shows a front view of an axial holder for a packaging material dispensing device according to a second embodiment according to the invention;
[0040] FIG. 2b shows a side view of the axial holder according to FIG. 2a;
[0041] FIG. 2c shows a perspective view of the axial holder according to FIG. 2a;
[0042] FIG. 3a shows a front view of an axial holder for a packaging material dispensing device according to a third embodiment according to the invention;
[0043] FIG. 3b shows a side view of the axial holder according to FIG. 3a;
[0044] FIG. 3c shows a perspective view of the axial holder according to FIG. 3a;
[0045] FIG. 4a shows a front view of a packaging material dispensing device according to the invention according to a fourth embodiment;
[0046] FIG. 4b shows a side view of the packing material dispensing device according to FIG. 4a;
[0047] FIG. 4c shows a perspective view of the packaging material dispensing device according to FIG. 4a;
[0048] FIG. 5a shows a front view of an axial holder for a packaging material dispensing device according to a fifth embodiment according to the invention;
[0049] FIG. 5b shows a side view of the axial holder according to FIG. 5a;
[0050] FIG. 5c shows a perspective view of the axial holder according to FIG. 5a;
[0051] FIG. 6a shows a front view of an axial holder for a packaging material dispensing device according to a sixth embodiment according to the invention;
[0052] FIG. 6b shows a side view of the axial holder according to FIG. 6a;
[0053] FIG. 6c shows a top view onto the axial holder according to FIG. 6a;
[0054] FIG. 6d shows a perspective view of the axial holder according to FIG. 6a;
[0055] FIG. 7a shows a front view of an axial holder for a packaging material dispensing device according to a seventh embodiment according to the invention;
[0056] FIG. 7b shows a side view of the axial holder according to FIG. 7a;
[0057] FIG. 7c shows a top view onto the axial holder according to FIG. 7a;
[0058] FIG. 8a shows a front view of an axial holder for a packaging material dispensing device according to an eight embodiment according to the invention;
[0059] FIG. 8b shows a side view of the axial holder according to FIG. 8a;
[0060] FIG. 8c shows a top view onto the axial holder according to FIG. 8a;
[0061] FIG. 8d shows a perspective view of the axial holder according to FIG. 8a;
[0062] FIG. 9a shows a front view of an axial holder for a packaging material dispensing device according to a ninth embodiment according to the invention;
[0063] FIG. 9b shows a side view of the axial holder according to FIG. 9a;
[0064] FIG. 9c shows a top view onto the axial holder according to FIG. 9a;
[0065] FIG. 9d shows a perspective view of the axial holder according to FIG. 9a;
[0066] FIG. 10a shows a front view of an axial holder for a packaging material dispensing device according to a tenth embodiment according to the invention;
[0067] FIG. 10b shows a side view of the axial holder according to FIG. 10a;
[0068] FIG. 10c shows a top view onto the axial holder according to FIG. 10a;
[0069] FIG. 10d shows a perspective view of the axial holder according to FIG. 10a;
[0070] FIG. 11a shows a front view of an axial holder for a packaging material dispensing device according to an eleventh embodiment according to the invention;
[0071] FIG. 11b shows a side view of the axial holder according to FIG. 11a;
[0072] FIG. 11c shows a top view onto the axial holder according to FIG. 11a; and
[0073] FIG. 11d shows a perspective view of the axial holder according to FIG. 11a.
DETAILED DESCRIPTION
[0074] To simplify legibility and clarity, the same or similar reference numerals will be used below for the same or similar components of the different embodiments of packaging material dispensing devices according to the invention.
[0075] A packaging material dispenser according to the invention or a device according to the invention, respectively, for manually or mechanically producing a tubular packaging material is provided below in general with reference numeral 1. The device 1 according to the invention for manually or mechanically producing a tubular packaging material 2 of a roll 4 comprises a receptacle 3 as main component for at least partially encompassing the roll 4 in the circumferential direction U as well as an axial holder 5 for holding the end face of the roll 4.
[0076] The axial holder 5 has a wall 11, in which a dispensing opening 13 for dispensing the packaging material 2 in an axial dispensing direction A is formed. On the inner side, the wall 11 has an inner guide contour 15, which tapers in a funnel-like manner, from the receptacle 3 in the direction of the dispensing opening 13. The inner guide contour 15, which tapers in a funnel-like manner, defines a funnel axis T. A funnel opening angle of 45 as an example here, is spanned between the funnel axis T and the inner guide contour (15). The funnel opening angle can generally be in a range of between 10 and 80, whereby a range of between 30 and 60 can be utilized. Deviating from the rotationally symmetrical frustoconical shape illustrated in FIGS. 1b and 1c with constant funnel opening angle , a funnel opening angle , which is variable in the circumferential course, can certainly be realized (as can be seen, for instance, in the case of FIGS. 10a-c and 11a-c). It is also conceivable that the funnel opening angle has a funnel opening angle , the course of which is thus variable in the axial funnel direction, for example in the case of a tapering, which is progressive, degressive or which differs from axial section to axial section. The paper web may be wound to form a roll 4 and from the inner cavity of which the paper web can be drawn to form a packaging material 2, defines a roll axis R. The roll axis R, the funnel axis T, and the axial dispensing direction A may be aligned coaxially with one another, such as, for example, in the case of the first embodiment according to the invention illustrated in FIGS. 1a to 1d.
[0077] In the case of the embodiment of a packaging material dispenser 1 shown in FIGS. 1a to 1c, a paper web roll 4 is held in a cylindrical half shell-shaped receptacle 3, which is shaped so as to essentially have a complementary form to the outer circumferential of the paper web roll 4. In the circumferential direction U, the receptacle 3 surrounds the roll 4 with an overlap of approximately 180, of between 160 and 200. The paper web roll 4 is embodied to be coreless, in particular without cardboard core, and has a cylindrical inner cavity, which is formed by the innermost layer of the paper web. To produce packaging material, the innermost paper layer is drawn from the inner cavity of the roll 4, is pulled through the funnel-shaped inner contour 15 of the axial holder 5, and is provided through the dispensing opening 13 as spiral tubular packaging material 2, as is schematically illustrated in FIGS. 1a to 1c.
[0078] In the axial dispensing direction A, a forward orientation is defined by the dispensing direction of the packaging material 2, to which reference will be made below. With regard to the axial dispensing direction A, the axial holder 5 for holding the front end face 41 of the roll 4 is arranged at the front side of the receptacle 3. In the case of the embodiment depicted in FIGS. 1a to 1c, the rear end face 41 of the roll 4 faces in the direction of a rearward refilling opening side of the device 1. The receptacle 3 can essentially be opened completely at the refilling rear side of the device 1.
[0079] A supply nose 45, which protrudes inwards transversely to the axial direction A or transversely to the roll axis R, respectively, and which is curved convexly and extends over more than 15 and/or less than 90 in the circumferential direction, and which can be attached to the outer side of the roll 4 when reloading the device 1, is formed at the underside of the receiving shell 3 at the rearward opening thereof. A linear contact area between the outer side of the roll and the hollow-cylindrical shell body of the receptacle 3 can thus be avoided. The nose facilitates the insertion of the roll 4 into the receptacle 3 and avoids damages to the outer side of the roll.
[0080] When inserting the roll 4 into the receptacle 3, the user is urged to guide the end face 41 of the roll 4 all the way to the axial stop, which is formed by the funnel-shaped inner guide contour 15 of the axial holder 5. To facilitate this or to make this possible, respectively, a rear axial recess 31 is provided at the rearward end 53 of the axial holder 5. As can be seen in FIGS. 1b and 1c, the rear axial recess 31 provides sufficient space for the user, when inserting the roll 4 into the device, for producing and dispensing packaging material 2, in order to guide the front end face 41 of the roll 4 all the way to the inner contour 15 of the axial holder 5, without the hand of the user, which holds the roll 4, thereby coming into a direct contact with the wall 11 of the axial holder 5.
[0081] In the case of the embodiment of a rear axial recess 31 at the rearward end 53 of the axial receptacle 5 illustrated in FIG. 1b, an extension of the axial recess 31 in the direction of the axial dispensing direction A or in the direction of the roll axis R/funnel axis T, respectively, which coincide here, by approximately 5 cm to 10 cm is ensured, wherein the rear axial recess 31 extends in the circumferential direction along the base area 33 by more than 10 cm. At the base area 33 of the rear axial recess, thus in the front end region of the axial recess 31, the latter has an obtuse opening angle with an extension of between 140 and 180. Starting at the base section 33, the outer contour of the two lateral rims 32, 34, which are located opposite one another in the circumferential direction U, of the rear axial recess 31 runs so as to be continuously rounded, in order to largely rule out a risk of injury for the user.
[0082] Provided that the layers of the roll 4, which are wound around one another, are still in a static frictional state, as it is illustrated schematically in FIGS. 1b and 1c, the end face 41 of the roll 4 forms a flat or slightly conical end face 41 (i.e. with an opening angle or almost 180), which, when inserting the roll 4 into the device 1, initially comes into direct contact with the guide contour 15 of the axial receptacle 5 along its outer circumference at the end face. At the moment of the first contacting of the circumferential outer edge of the roll 4 at the end face with the guide contour 15 of the axial receptacle 5, the rear axial recess 31 in the axial dispensing direction or the funnel axis T or roll axis R, respectively, coinciding therewith in the case of the embodiment according to FIGS. 1a to 1d, provides a sufficient distance of 1 cm to approximately 5 cm for the hand of the user.
[0083] The shell-shaped receptacle 3 can be made in one piece of a cylindrical shell-shaped thin wall, for example of plastic, with a wall thickness of up to 5 mm or less. It is conceivable that the receptacle 3 may include a different material, for example sheet metal. The roll 4 and the receptacle 3 may be dimensioned to match one another in such a way that they are formed so as to essentially have a complementary form, for example circularly and/or are formed coaxially or virtually coaxially to one another, respectively, wherein a deviation of the concentricity of a few centimeters, for example 0.5 cm to 3 cm, can be tolerable.
[0084] At the front end of the receptacle 3 in the axial direction A, the axial holder 5 connects directly, to the embodiment depicted in FIGS. 1a to 1c. The entry area 30 of the axial holder 5 has an essentially cylindrical base cross section, from which the frustoconical inner guide contour 15 tapers rotationally symmetrically around the funnel axis T in the direction of the dispensing opening 13. Starting at the receptacle 3, the inner guide contour 15 runs all the way to the dispensing opening 13 without obstacles. The axial holder 5 may include integrally of a single part, for example an injection molded plastic part or a part made of several plastic components. The axial holder 5 has a wall 11, which can have an essentially constant wall thickness of 1 mm to 5 mm along the complete axial extension of the axial holder 5. Hollow-cylindrical sleeve or collar sections 51, 57, respectively, which extend exclusively in the axial direction A or in the direction of the funnel axis T, respectively, can be formed at the front end 52 and at the rear end 53, axially adjacent to the funnel-shaped section of the wall 11, which forms the inner guide contour 15. The collar 57 provided at the rearward end 53 of the wall 11 of the axial holder 5 can extend, for example, circumferentially along the outer side of a shell-shaped receptacle 3 in the circumferential direction U, as can be seen, for example, in FIGS. 1a and 1c, and can comprise assembly elements for attaching the axial holder 5 to the receptacle 3.
[0085] Several axial recesses 21, which extend rearward in the axial direction A, starting at the front end 52 of the wall 11, are provided at the front end 52 of the axial holder 5. Four front axial recesses 21 are provided at the front end 52 of the wall 11 so as to be distributed evenly in the circumferential direction U, as can be seen particularly well in FIG. 1a. A front axial recess 21 is designed to provide the user with a certain space for reaching inside the axial holder 5, towards the layers of the roll 4 on the inner side, which limit the inner cavity. The user can thus simply pull out the inner layers of the roll 4 through the dispensing opening 13 and can form a spiral tubular packaging material 2. The front axial recesses 21 in the wall 11 are further formed to act as tear-off aid for severing individual packaging material units, for example packaging material cushions, from the packaging material tube 2. For this purpose, an axial recess 21 can be formed, for example as in the detailed illustration according to FIG. 1d.
[0086] According to FIG. 1d, the front axial recess 21 or removal and/or tear-off axial recess 21, respectively, extends to the rear over at least 10 mm, approximately 30 mm to 100 mm, in the axial direction A, starting at the front end 52 of the axial holder 5 in the axial dispensing direction A. At the rear end of the front axial recess 21 in the axial dispensing direction A, it forms a narrow clamping section 23. The clamping section 23 forms the base of the removal and tear-off axial recess 21 on the side of the receptacle. In the clamping section 23, the front axial recess 21 is initially designed with an acute opening angle in the range of between 5 and 45. The opening width of the acute angle can lie in the range of between 20 and 35. Starting at the clamping section 23 of the axial recess 21, the wall 11 extends forward in the axial direction A along a right and left leg or a right outer edge 22 and a left outer edge 24, respectively, between which the acute opening angle is defined. The outer edges 22 and 24 are located opposite one another in the circumferential direction U. The outer edges can be designed in such a way that they run along a continuous curvature path all the way to the front end 52 of the axial holder 5. A, for example left, outer edge 22 of a first axial recess 21 transitions into the right outer edge 24 of an adjacent, second axial recess 21, continuously, in particular in a rounded manner, at the front end 52 of the axial holder 5.
[0087] In the case of an embodiment of a packaging material production device 1 comprising an axial holder 5, the wall 11 of which has two or more axial recesses 21 (for example according to FIGS. 10a to 10d), beak-like wall sections or beaks 12, respectively, are formed between the axial recesses 21. In the case of the device 1 depicted in FIGS. 1a to 1d, the wall 11 forms four beaks 12, which are adjacent to one another in the circumferential direction U, wherein a removal and/or tear-off axial recess 21 in the manner of the corner of a mouth is formed between two respective adjacent beaks 12.
[0088] Starting at the clamping section 23 of the axial recess 21, the width w of the axial recess 21 increases in the circumferential direction U. The widest distance W in the circumferential direction U between outer edges 22, 24, which are located opposite one another in the circumferential direction U, is formed in the area of the front end 52, and the narrowest opening width w of the front axial recess 21 is formed in the end area of the clamping section 23 on the side of the receptacle, where a radius transition between left and right outer edge 22, 24 can be provided.
[0089] The axial recess can be formed exclusively in the cylindrical sleeve-shaped front collar section 51 of the receptacle 3. In the case of an embodiment of this type (which is not illustrated in more detail), the front axial recess 21 extends purely axially within the wall 11. According to the embodiment illustrated for example in FIGS. 1a to 1d, the tear-off axial recess 21 expands within the front collar section 51 as well as in the funnel section 55, which forms the inner guide contour 15, which tapers in a funnel-shaped manner. In the wall 11, the axial recess 31, which extends in the collar section 51 as well as in the funnel section 55, thus does not only extend in the axial direction A, but also transversely to the axial direction A in the radial direction Q.
[0090] FIGS. 2a to 2c show a different embodiment of an axial holder 5 for a device according to the invention for producing packaging material 1 according to a second embodiment. The axial holder 5 according to FIGS. 2a to 2c differs from the example described with regard to FIG. 1 in that only a single front removal and/or tear-off axial recess 21 is introduced into the wall 11 of the axial holder 5. The front collar section 51 of the axial holder 5, which extends around a majority (approx. 270) of the dispensing opening 13 in the circumferential direction U, can be seen in FIG. 2c. As in the case of the above-described exemplary embodiment, the axial recess 21 extends through the collar section 51 in the axial direction A as well as with radial and axial components into the funnel section 55, which provides the axial holder 5 of the inner guide contour 15. The inner guide contour 15 of the axial holder 5 illustrated in FIGS. 2a to 2c is essentially identical to the inner guide contour 15 of the embodiment illustrated in FIGS. 1a to 1d. As above, the funnel axis T and the dispensing axis A are coaxial to one another. The inner guide contour 15 forms a frustoconical inner side surface of the axial holder 5 around the funnel axis T, which, starting at the entry area 30, extends with circular cross section towards the passage surface 20, which is likewise formed in a circular manner (with the exception of the nose-like contour of the front axial recess). (A rearward insertion axial recess can optionally be provided additionally (not illustrated in more detail) in the case of the axial holders 5 provided in FIGS. 2a to 2c).
[0091] A third embodiment of an axial holder 5 according to a third embodiment of a device 1 according to the invention for producing packaging material is illustrated in FIGS. 3a to 3c. In contrast to the two above-illustrated embodiments, the axial dispensing direction A in the case of the third embodiment is offset in parallel eccentrically by a distance E relative to the roll axis R.
[0092] The embodiment according to FIGS. 3a to 3c moreover differs from the above-described embodiments in that five evenly distributed removal and/or tear-off axial recesses 21 are provided at the front end 52 of the axial holder 5. Between the axial recesses 21, the axial holder 5 forms five beaks 12. The funnel-shaped inner contour 15 of the axial holder 5 according to FIGS. 3a to 3c runs rotationally symmetrically around the funnel axis T and relative to the roll axis R and the dispensing axis A in the form of an oblique truncated cone. Compared to the parallel alignments of dispensing axis A and roll axis R, the funnel axis T is tilted by an angular offset , which lies between 5 and 10 in the embodiment illustrated in FIGS. 3a to 3c. An embodiment of this type of the axial stop 5 is suited particularly for the case that the axial dispensing direction is arranged so as to be inclined downwards relative to a vertical direction running in the gravity direction (not illustrated in more detail) with respect to a horizontal direction (not illustrated in more detail), so that the gravity exerts an effect, which pulls down and out, on the windings of the roll 4. The axial stop 5 can then be positioned in such a way that the roll axis R and the axial dispensing direction A are not aligned, but are offset to one another, so that the axial stop 5 exerts an increased resistance against an involuntary movement of the packaging material 2 by the effect of the gravity. An undesired slipping of the paper web material of the roll 4 from the packaging material production and dispensing device 1 can thus be avoided.
[0093] A fourth embodiment according to the invention of a packaging material dispenser or of a device for manually or mechanically producing a tubular packaging material, respectively, is depicted in FIGS. 4a to 4d. The illustration of a roll is forgone thereby. As can be seen in FIG. 4b, the axial dispensing direction A and the funnel axis T run coaxially to one another and are tilted by an angle or , respectively, relative to the roll axis R in the case of this fourth embodiment. To simplify matters, no axial recesses are depicted at the front 52 or rear 53 rim of the axial holder 5 in the case of the embodiment according to FIGS. 4a to 4c, but they can optionally be present. Similarly as in the case of the embodiments according to FIGS. 3a to 3c, the (angular) offset between the axial dispensing direction A and the roll axis R in the case of the embodiment according to FIGS. 4a to 4c has the advantageous effect that even in the case of an orientation of the roll axis R, which is tilted relative to the horizontal direction, an involuntary slip-out of packaging material through the dispensing opening 13 is prevented by means of the additional resistance provided by the axial holder 5.
[0094] FIGS. 5a to 5c show a fifth embodiment of an axial holder 5. As does the axial holder illustrated in FIGS. 1a to 1d, it has four removal and tear-off axial recesses 21 in its wall 11. In contrast to the above-depicted embodiments, an essentially square entry cross section is provided at the entry area 30 of the axial holder 5 according to FIGS. 5a to 5c, starting at which a truncated pyramid-shaped inner contour 15 extends to an essentially square passage surface 20. As described above, the receptacle, which is not illustrated in more detail here, can optionally be shaped as semi-cylindrical shell-shaped receptacle or can be formed so as to be form-adapted to the square base area of the axial holder 5, for example by a V-shaped cross section or by support beams, which are parallel to the roll axis R.
[0095] As can be seen in FIGS. 5b and 5c, the four axial recesses 21 are formed at the front collar section 51 of the axial holder in the axial dispensing direction A and extend exclusively in the axial direction A and in the circumferential direction U. In the case of the embodiment according to FIGS. 5a to 5c, the collar section 51 has a square cross section. The collar section 51 is flush with the truncated pyramid-shaped funnel section 55. In the case of this embodiment, the axial holder 5 is also formed with a constant wall thickness of the wall 11. The beaks 12 of the axial holder 5 according to FIGS. 5a to 5c are flat and extend parallel to the lateral edges of the base area or of the passage surface 20, respectively, at the rims of the dispensing opening 13. The clamping section 23 is formed in the corner areas between the collar section 51 and the pyramid section 55 of the axial holder 5, and the axial recess 21 increasingly enlarges its width w, starting at the clamping section 23, along the axial dispensing direction A. In the case of the axial holder 5 comprising a square cross section, an insertion axial recess (not illustrated in more detail) can also be provided at the rear end of the wall 11.
[0096] A sixth embodiment of an axial holder 5 is illustrated in FIGS. 6a to 6d for a further embodiment of a device according to the invention. For an easier viewing, axial recesses, which can be optionally introduced, are not illustrated in the fully cylindrical collar area 51 at the front end 52 of the axial holder 5 in the case of the axial holders 5 according to FIGS. 6a to 6d.
[0097] The axial holder 5 according to FIGS. 6a to 6d has a stepped rear axial recess 31, which, starting at the rear rim 53, extends forwards into the wall 11 axially in the axial dispensing direction A or in the direction of the roll axis R, respectively, and the funnel axis T, which is arranged coaxially thereto according to this embodiment. A step 35 is in each case provided at the left rim 32 in the circumferential direction U and at the right rim 34 of the rear axial recess 31 in the circumferential direction U. Between the steps, a base section 33 of the rear axial recess 31 extends in a curved manner over more than half of the circumferential width of the recess 31. According to the top view depicted in FIG. 6c, the opening angle lies between 180 and 160, at 170. The step sections 35 form a defined attachment or stop point, respectively, for the circumferential end of the roll 4 at the end face (not illustrated in more detail), similarly as in FIG. 1, wherein this defined attachment point provides sufficient space, that is at least 1 cm to for example 5 cm, for engaging with the hand of the user, for the circumferential edge of the roll end face 41, starting in the axial dispensing direction A or along the funnel axis T/roll axis R, respectively.
[0098] The step 35 is provided in the area of the transition between the frustoconical funnel section 55 and the cylindrical sleeve-shaped rear collar section 57 of the axial holder 5. The rear collar section 57 forms the rear end 53 of the axial holder 5 in a partially circular manner and can, as described above with regard to FIG. 1, have assembly components for connection to the receptacle 3. It is in particular possible that the rear collar 57 of the axial holder 5 is slipped over a receptacle 3 of essentially complementary form with a smaller cross sectional width, in particular with a smaller diameter than that of the entry area 30 of the axial holder 5.
[0099] With the exception of the step 35, the rear axial recess 31 essentially corresponds to the embodiment illustrated in FIGS. 1a to 1c. As in the case of the embodiment illustrated in FIGS. 1a to 1c, the axial holder 5 has an essentially frustoconical inner funnel contour 15, which runs rotationally symmetrically around the funnel axis T, which is oriented coaxially to the roll axis R and to the axial dispensing direction A. As in the case of the above-described embodiment with regard to FIGS. 1a to 1c, the rear axial recess 31 according to FIGS. 6a to 6d does not only extend into the rear collar section 57 in the axial direction, but furthermore forwards and rearwards into the funnel section 55 with axial as well as with radial components. In the case of the embodiment according to FIGS. 6a to 6d, the wall thickness of the wall 11 is essentially also constant.
[0100] The axial holder 5, which is depicted in FIGS. 7a to 7d, essentially differs from the embodiment according to FIGS. 6a to 6d in that two insertion axial recesses 31, which are located opposite one another in a mirror-symmetrical manner, are provided in the rear end 53 of the axial holder 5. The provision of several axial recesses 31 allows for a simpler insertion of the roll (not illustrated in more detail) into the receptacle of the device 1 equally from both sides laterally to the device 1.
[0101] To avoid an undesired weakening of the axial holder 5 by the introduction of the rear axial recesses 31 (or also front axial recesses, which are not illustrated in detail here), ribs, which extend parallel in the axial dispensing direction A or in the direction of the funnel axis T, respectively, can be provided at the axial holder 5 on the outer side (not illustrated in more detail).
[0102] The opening angle suggested in the side view according to FIG. 7b at the base 33 of the axial receptacle 31 has an opening width of more than 90, for example between 95 and 120, so that an acute-angled contact between opposite rims 32, 34 at the base 33 of the recess 31 is avoided.
[0103] A face plate 36, which extends by less than half around the funnel axis T in the circumferential direction U, is provided between the two rear axial recesses 31. A step 35, which is formed similarly to the steps described above with regard to FIGS. 6a/6d in the transition area between collar 57 and funnel section 55 on the side of the receptacle, is provided at the rim 32 or 34, respectively, which is in each case formed opposite to the face plate 36.
[0104] FIGS. 8a to 8d show a further alternative of an axial holder 5 for a device 1 according to the invention. Similarly as in the case of FIGS. 4a to 4c, the optional front axial recess and rear axial recess was forgone to simplify the illustration. In the embodiment illustrated in FIGS. 8a to 8c, the dispensing opening 13 is arranged eccentrically relative to the roll axis R in such a way that the roll axis R does not intersect the passage opening 20 of the dispensing opening 13.
[0105] In particular for packaging material dispensers 1, which are aligned obliquely or even vertically, an embodiment of this type may prevent the packaging material unintentionally sliding out of the device 1. The axial dispensing direction A can be provided specifically with regard to a predetermined orientation of a packaging station (not depicted in more detail).
[0106] With respect the roll axis R, the axial dispensing direction A is offset about an angular offset , as is shown by the top view according to FIG. 8c. An eccentricity E between the roll axis R and the dispensing axis A is further provided perpendicular to the top view 8c, as illustrated schematically in FIG. 8a. The funnel axis T runs parallel to the dispensing axis A and forms an inner funnel contour 15 according to an oblique cone relative to the roll axis R.
[0107] The embodiment of an axial holder 5 according to FIGS. 9a to 9d essentially differs from the embodiment described with regard to FIGS. 8a to 8d in that the axial dispensing direction A is provided without the vertical eccentricity relative to the roll axis R depicted in FIG. 8a. In the case of the embodiment according to FIGS. 9a to 9d, however, an angular offset is also provided between the axial dispensing direction A and the roll axis R, as is shown by the top view according to FIG. 9c.
[0108] Similarly as the axial holder 5 according to FIGS. 1a to 1d, the axial holder 5 has four removal and tear-off axial recesses 21 in its wall 11 according to FIGS. 9a to 9d, which extend mainly in the front collar area 51. As in the embodiment according to FIGS. 8a to 8d, the axial dispensing direction A is offset parallel to the funnel axis T in the case of the embodiment according to FIGS. 9a to 9d. In the case of FIGS. 9a to 9d, the funnel axis T is also angled relative to the roll axis R, so that the inner guide contour 15, which is formed rotationally symmetrically around the funnel axis T, has an oblique cone shape with respect to the roll axis R. In the case of the embodiments according to FIGS. 8a to 8d as well as in the case of the embodiment according to FIGS. 9a to 9d, the oblique funnel nonetheless maintains a steadily tapering inner contour 15 with respect to the roll axis R. The rear collar section 57 of the embodiment according to FIGS. 8a to 8d and 9a to 9d extends coaxially to the roll axis R in a cylindrical sleeve-shaped manner. If a rear axial recess 31 (not illustrated in more detail) is introduced in the case of an embodiment described in FIGS. 8a to 8d or 9a to 9d, a rotationally symmetrical design of the rear axial recess with respect to the roll axis R would be conceivable.
[0109] In the case of the embodiment according to FIGS. 10a to 10c, the axial holder 5 for a packaging material dispensing device 1, which is not illustrated in more detail, has an essentially square cross section in the entry area 30. The passage surface 20 at the dispensing opening 13 is essentially circular with nose-like appendages in the form of the front axial recesses 21. As can be seen in FIG. 10, the axial holder 15 is equipped with three uniform tear-off axial recesses 21, which are distributed in the circumferential direction U and which are formed in the wall 11. The thickness of the wall 11 is essentially constant. The axial dispensing direction A is parallel to the funnel axis T and offset by the angle with respect to the roll axis R. The roll axis R intersects the square entry cross section essentially perpendicularly in the opening area 30. The dispensing axial direction A is perpendicular to the passage surface 20 of the dispensing opening 13. Starting at the square cross section at the entry 30 of the axial holder 5, the funnel-like inner guide contour 15 in the funnel section 55 of the axial holder 51 extends in a pyramid-like manner in the axial dispensing direction A. The funnel or pyramid axis T, respectively, is in each case still oriented centrally, obliquely in the axial dispensing direction relative to the roll axis R.
[0110] On the one hand, the embodiment illustrated in FIGS. 11a to 11c differs from the embodiment according to FIGS. 10a to 10d by the smaller number of only two diametrically opposite axial recesses 21, which are arranged around the dispensing opening 13. On the other hand, the base area in the entry area is designed with two rectangular lateral edges and with two lateral rims, which are connected in the shape of a quadrant. Starting at this base form, the inner guide contour 15 extends essentially in a pyramid-shaped manner from the entry 30 to the passage opening 20, similarly as in the case of the embodiment according to FIGS. 10a to 10d. The funnel axis T or pyramid axis, respectively, defined by the funnel section 55 is offset slightly parallel with respect to the axial dispensing direction A and is offset by the angle with respect to the roll axis R. As above, the roll axis R intersects the entry cross section approximately centrally and perpendicularly. The dispensing axis A is central and/or perpendicular to the passage opening 20.
[0111] The features disclosed in the above description, the figures, and the claims, can be significant for the realization of the invention in the various designs, both individually and in any combination.
LIST OF REFERENCE NUMERALS
[0112] 1 device for producing packaging material [0113] 2 packaging material [0114] 3 receptacle [0115] 4 roll [0116] 5 axial holder [0117] 11 wall [0118] 12 beak [0119] 13 dispensing opening [0120] 15 inner guide contour [0121] 20 passage surface [0122] 21 front axial recess [0123] 22, 24 outer edge [0124] 23 clamping section [0125] 30 entry area [0126] 31 rear axial recess [0127] 32, 34 rim [0128] 33 base section [0129] 35 step [0130] 36 face plate d [0131] 41 front end face [0132] 43 rear end face [0133] 45 nose [0134] 51 front collar section [0135] 52 front end [0136] 53 rear end [0137] 55 funnel section [0138] 57 rear collar section [0139] A axial dispensing direction [0140] E eccentricity [0141] Q radial direction [0142] R roller axis [0143] T funnel axis [0144] U circumferential direction [0145] w width [0146] acute opening angle [0147] obtuse opening angle [0148] angular offset (R/T) [0149] angular offset (R/A)
