NOZZLE SYSTEM FOR A TEXTILE MACHINE, SCREW SYSTEM FOR A QUICK FASTENING SYSTEM, AND TEXTILE MACHINE COMPRISING SAID NOZZLE SYSTEM

Abstract

The invention relates to a nozzle system (100) for a textile machine. The nozzle system (100) comprises at least one nozzle element (1) and a connecting element (2) for connecting the nozzle element (1) to a textile machine. The connecting element (2) comprises at least one quick fastening system (3). The quick fastening system (3) comprises a first and a second position. In the first position, the quick fastening system (3) is connected to the connecting element (2) so that the nozzle element (1) can be fastened to the quick fastening system (3) in such a way that the nozzle element (1) can be removed without auxiliary means. The quick fastening system (3) is designed in such a way that in the second position the nozzle element (1) is immovably fastened to the connecting element (2).

Claims

1. A nozzle system for a textile machine comprising at least one nozzle element and a connecting element for connecting the nozzle element to a textile machine, wherein the connecting element comprises at least one quick fastening system, wherein the quick fastening system comprises a first and a second position, wherein in the first position the quick fastening system is connected to the connecting element so that the nozzle element can be fastened to the quick fastening system in such a way that the nozzle element can be removed without auxiliary devices, wherein the quick fastening system is designed in such a way that in the second position the nozzle element is immovably fastened to the connecting element.

2. The nozzle system according to claim 1, wherein the quick fastening system is designed such that in a fastening position of the connecting element the nozzle element can be prevented from falling down.

3. The nozzle system according to claim 1, wherein in the first position of the quick fastening system the nozzle element is movable between a first and a second position.

4. The nozzle system according to claim 1, wherein the at least one nozzle element comprises an adapter element, wherein at least one nozzle is arranged on the adapter element.

5. The nozzle system according to claim 4, wherein by means of the quick fastening system the at least one nozzle is fastened or fastenable directly or via an intermediate adapter element to the adapter element and/or the adapter element to the connecting element.

6. The nozzle system according to claim 1, wherein the connecting element comprises a seal for sealing an air delivery system.

7. The nozzle system according to claim 6, wherein the seal comprises a substantially conical shape.

8. The nozzle system according to claim 1, wherein the connecting element comprises at least one recess for receiving a sleeve element of the quick-fastening system.

9. The nozzle system according to claim 5, wherein the nozzle element comprises at least one protective element for protecting the nozzle.

10. The nozzle system according to claim 9, wherein the protective element comprises an impact cage.

11. A screw system for a quick fastening system of a nozzle system, wherein the screw system comprises a sleeve element for fastening to a first element and a pin for connecting to a second element, wherein the pin comprises at least one circumferentially arranged guide element, wherein the sleeve element comprises a guide for guiding the guide element, wherein the pin is arranged at least partially within the sleeve element so that the pin is rotatably and displaceably mounted relative to the sleeve element, and wherein the guide comprises a maximum of ¾ turn, in particular a maximum of ½ of a turn.

12. The screw system according to claim 11, wherein the sleeve element comprises an anti-rotation element.

13. The screw system according to claim 11, wherein the guide is designed in such a way that a stroke of the pin of at least 1.55 mm is possible.

14. The screw system according to claim 11, wherein the guide is closed.

15. The screw system according to claim 13, wherein the guide comprises several sections, wherein the sections are formed with or without a pitch.

16. The screw system according to claim 15, wherein the transitions between the sections are rounded.

17. The screw system according to claim 11, wherein the guide comprises an engagement element.

18. The screw system according to claim 17, wherein the engagement element comprises a bulge of the guide.

19. The screw system according to claim 11, wherein the pin comprises a recess for receiving the guide element.

20. The screw system according to claim 11, wherein the pin comprises a height of 7.5 mm.

21. The screw system according to claim 11, wherein said pin comprises a head for clamping said second element.

22. The screw system according to claim 21, wherein said head comprises at the periphery a flattened side and a rounded side.

23. The screw system according to claim 22, wherein at the transitions of the rounded side to the flattened side at least one rounding section is arranged with a radius deviating from the radius of the rounded side.

24. The screw system according to claim 23, wherein two rounding sections are arranged at each transition, wherein a straight section is arranged between each of the rounding sections.

25. The screw system according to claim 11, wherein the screw system comprises a spring element, the spring element being arranged in the sleeve element in such a way that the spring element can be tensioned by displacing the pin into the sleeve element.

26. The nozzle system according to claim 1, wherein the quick fastening system comprises at least one screw system wherein the screw system comprises a sleeve element for fastening to a first element and a pin for connecting to a second element, wherein the pin comprises at least one circumferentially arranged guide element, wherein the sleeve element comprises a guide for guiding the guide element, wherein the pin is arranged at least partially within the sleeve element so that the pin is rotatably and displaceably mounted relative to the sleeve element, and wherein the guide comprises a maximum of ¾ turn, in particular a maximum of ½ of a turn.

27. The nozzle system according to claim 26, wherein the screw system is designed to be changeable from the first fastening position to the second fastening position by turning an element of the screw system by less than 181°.

28. A textile machine comprising at least one nozzle system according to claim 1.

29. The nozzle system according to claim 7, wherein the inner surface of the seal comprises a radius which is constant towards the axis of the seal.

30. The screw system according to claim 11, wherein the nozzle system is a nozzle system according to claim 1.

31. The screw system according to claim 17, wherein the engagement element is arranged at one end of the guide.

32. The screw system according to claim 31, wherein the engagement element is arranged at the lower end of the guide in a connecting position of the sleeve element.

33. The screw system according to claim 18, wherein the bulge has a radius comprising substantially half the diameter of the guide.

34. The screw system according to claim 20, wherein the pin comprises a cross-sectional diameter of 4 mm, wherein the internal cross-sectional diameter of the sleeve element is 4 mm.

35. The screw system according to claim 22, wherein the flattened side is arranged at a distance of maximum 1.95 mm from the axis of rotation of said pin.

36. The screw system according to claim 24, wherein the straight section is arranged between each of the rounding sections at an angle of 45° to the straight side of the head.

37. The nozzle system according to claim 26, wherein the quick fastening system comprises a clamping element.

Description

[0088] They show:

[0089] FIG. 1: Perspective view of a nozzle system

[0090] FIG. 2: Top view of the nozzle system from FIG. 1

[0091] FIG. 3: Cross-section through a screw system

[0092] FIG. 4: Perspective view of a first embodiment of a sleeve element

[0093] FIG. 5: Top view of a pin

[0094] FIG. 6: Perspective view of a clamping element

[0095] FIG. 7: Top view of the clamping element

[0096] FIG. 8: Bottom view of an adapter element

[0097] FIG. 9: Cross-section through a seal

[0098] FIG. 10: Cross-section through a connecting element

[0099] FIG. 11: First side view of a second embodiment of a sleeve element

[0100] FIG. 12: Second side view of a second embodiment of a sleeve element

[0101] FIG. 13: Third side view of a second embodiment of a sleeve element

[0102] FIG. 1 shows a perspective view of a nozzle system 100. The nozzle system 100 comprises a nozzle element 1 which is attached to a connecting element 2 by means of a quick fastening system 3.

[0103] The nozzle element 1 comprises a nozzle 4, a protective element 5 with two side arms 5a and 5b forming an impact cage, and an adapter element 6. The protective element 5 and the adapter element 6 are manufactured in one piece, in this embodiment stamped as one part.

[0104] The connecting element 2 comprises a base element, in this case a base plate 21, in which two holes 22 are drilled. These are for connection to a textile machine. At each of the ends 26a, 26b of the base plate 21 a yarn guiding element 24 is arranged perpendicular to the base plate 21. The yarn guide elements 24 comprise yarn protection elements 25, each of which is fastened with a screw 23, in this case a pan-head screw. The yarn guide elements 24 are made in one piece with the base plate 21.

[0105] The nozzle element 1 is arranged between the yarn protection elements 24 and the holes 22 on the wide, here upper, surface 27 of the base plate 21. The yarn channel of the nozzle 4 is arranged laterally (not shown here).

[0106] Yarns are guided from the end 26a through a first yarn guiding element 24, over the quick fastening system 3 and into the nozzle 4, where they are treated. They are then guided out of the nozzle system 100 through the yarn guide element 24 again.

[0107] In the fastening position of the nozzle system 100, the end 26b shown in the picture on the right is arranged at the bottom, the top 27 and side surface 28 of the base plate 21 are arranged parallel to the perpendicular.

[0108] Details of how to attach and detach the nozzle element 1 from the connecting element 2 are described in relation to FIG. 2.

[0109] FIG. 2 shows a top view of the nozzle system 100 from FIG. 1. The nozzle element 1 can be seen, which is attached to the connecting element 2 with the quick fastening system 3. The holes 22 are designed here as countersunk holes. The holes 22 are arranged directly adjacent to narrow sides 63 of the nozzle element 1. The quick fastening system 3 comprises a screw system 3a and a clamping element 3b. The clamping element 3b is firmly connected to the connecting element 2 by clamping the clamping element 3b with a fastening element 31 in an opening of the connecting element 2. The screw system 3a is fastened in the same way (not shown here). Both the screw system 3a and the clamping element 3b comprise a head 60a and 60b, each head 60a and 60b comprising a round clamping side 61a, 61b and a flattened side 62a and 62b. The flattened sides 62a and 62b are flattened to the extent that screws can be easily inserted into the holes 22. The rounded clamping sides 61a and 61b are designed so that the nozzle element 1 can be easily clamped (cf. FIGS. 5 and 7).

[0110] The figure shows the quick fastening system 3 in a second position. In this second position, the rounded side 61a of the head 60a of the screw system 3a is oriented in such a way that it presses the nozzle element 1 towards the clamping element 3b. As a result, the nozzle element 1 is firmly connected to the connecting element 2 and cannot be moved. When the quick fastening system 3 is released, the head 60a of the screw system 3a is brought into the first position, i.e. turned so far that the round clamping side 61a of the screw system 3a points away from the clamping element 3b. This releases the clamping connection between head 60a and nozzle element 1 and the nozzle element 1 can be moved along the thread guide line F. This is the first position of the quick fastening system 3. In this position the nozzle element 1 is held so far that it cannot fall down, even if there is still pressure on the nozzle.

[0111] FIG. 3 shows a cross-section of a screw system 3a. The screw system 3a comprises a rigid element, here a sleeve element 33, a movable element, here a pin 32 and a guide element 34.

[0112] The sleeve element 33 has an outer cross-sectional diameter of 6 mm with a tolerance of 0 to −0.1 mm and a wall thickness of 4 mm with a tolerance of +/−0.05 mm on a flattened side 50 (cf. FIG. 4). Inside, the sleeve element 33 has a first interior space 47 and a second interior space 57. The first inner space 47 is arranged at the top and leads from an upper side 52 of the sleeve element 33 6 mm towards a lower side 56 of the sleeve element (cf. FIG. 4). The cross-sectional diameter of the first inner space 47 is 4 mm with a tolerance between +0.05 mm and 0 mm. The second inner space 57 is arranged below the first inner space 47 and leads from the first inner space 47 2 mm towards the lower side 56 (cf. FIG. 4). The second inner space has a cross-sectional diameter of 3.8 mm.

[0113] The guide element 34 is arranged to be guided in a guide 44 of the sleeve element 33. The guide element 34 is also arranged in a recess 37 in the shank 36 of the pin 32. The shaft 36 is partially arranged inside the sleeve element 33. A spring element 40 is arranged below the shaft 36 and above an opening 39 in the bottom of the sleeve element 33.

[0114] The shaft 36 comprises a cross-sectional diameter 41 of 4 mm with a tolerance of −0.1 mm to −0.5 mm. The recess 37 in the shaft 36 comprises a cross-sectional diameter of 1.5 mm with a tolerance of 0.014 to −0.034 and a depth of 3.3 mm.

[0115] The pin 32 also comprises the head 60a of the screw system 3a with a recess 43 for a hexagonal screwdriver.

[0116] The guide element 34 has a cylindrical shape. The guide element 34 is pressed into the recess 37 so that the part 42 of the guide element 34 which is not arranged in the recess 37 does not protrude.

[0117] The figure shows the screw system 3a in a screwed-in fastening position. The distance between the sleeve element 33 and the head 60a of the pin 32 is a fastening distance at which the object to be fastened, in FIG. 1 the adapter element 6, is placed. The spring element 40 is tightened.

[0118] To release the pin 32, the pin 32 is pushed downwards in the direction of the spring element 40 and rotated 180° around the pin axis A until the guide element 34 is positioned at the upper end 45a of the guide 44.

[0119] FIG. 4 shows a perspective view of a first embodiment of a sleeve element 33. The sleeve element 33 essentially comprises a sleeve 51 with a round cross-section having an upper side 52 with a large opening 55 and a lower side 56 with a small opening (cf. FIG. 3). The sleeve 51 comprises a flattened side 50 and a recess 49. The flattened side 50 serves to prevent rotation of the sleeve element 33. The sleeve element 33 is arranged in a recess of, for example, a connecting element 2 (cf. FIG. 1). A fastening pin 31 is then arranged in the recess 49 to fix the sleeve element 33 (not shown). The recess 49 is arranged at a transition from the flattened side 50 to the round side 54 and leads downwards from the upper side 52 by 7.7 mm.

[0120] The sleeve element 33 further comprises the guide 44. The guide 44 comprises a passage from the outer side of the sleeve 51 to the inner side of the sleeve 51. The guide 44 comprises two ends 45a and 45b, the first, upper end 45a being arranged 0.75 mm with a tolerance of +/−0.05 mm from the upper side 52 of the sleeve element 33 and the second, lower end 45b being arranged 2.6 mm with a tolerance of +/−0.5 mm. An engagement element 53, in this case a recess, is arranged at the lower end 45b.

[0121] Further, at the ends 45a and 45b, the guide 44 comprises two sections 46a and 46b without a pitch. A section with a pitch 48 is arranged between these sections 46a and 46b.

[0122] The sleeve element 33 is made of chromium-nickel steel.

[0123] FIG. 5 shows the screw system 3a from above. The pin 32 with head 60a can be seen, in which the recess 43 for inserting a hexagonal screwdriver is arranged. In cross-section, the head 60a comprises a round side 61a and a flat side 62a. The round side 61a comprises a radius of 3.75 mm with a tolerance of +/−0.05 mm. Three transition sections 72, 73, 74 are arranged at each of the transitions from the round side 61a to the flat side 62a. From the round side 61a to the flat side 62a follows the first transition section 72, which comprises a rounding with a radius of 2 mm. The second transition section 74 following in the same direction is straight with an inclination of 45° to the straight side 62a. The third, following transition section 73 again comprises a rounding of 2 mm.

[0124] At its widest point 75, the head 60a comprises a cross-sectional diameter of 7.45 mm. Transversely to this widest cross-sectional diameter, the head 60a comprises a cross-sectional diameter of 5.7 mm.

[0125] Also shown is the top surface of the sleeve element 33.

[0126] FIG. 6 shows a clamping element 3b in a side view. The clamping element 3b is substantially 12.7 mm high. The clamping element 3b comprises a clamping head 60b with a projection 80 on the round side 61b (see also FIG. 7). The projection 80 has a height of 2 mm. Below the projection 80 is a clamping recess 81 in which the base plate 21 can be placed (cf. FIG. 1). The height of the clamping recess 81 is 2.3 mm. The projection 80 comprises bevelled edges 83 towards the top of the clamping element 3b and towards the recess 81. A clamping body 77 of the clamping element 3b is arranged below the clamping recess 81.

[0127] Two further cut-outs 82 and 84 are arranged on the sides of the clamping body 77. The cut-out 84 is designed to be connected to the fastening element 31 (cf. FIG. 1) and extends from a point 5 mm away from a lower side 85 of the clamping body 77 to an upper side 70 of the clamping head 60b. The cut-out 84 is 7.7 mm long. The cutout 82 is 4 mm long and begins at a location 2.4 mm from the underside 85 of the clamp body 77.

[0128] FIG. 7 shows the clamping member 3b in a top view. In cross-section, the clamping head 60b has a round side 61b and a straight side 62b. The round side 61b has a radius of 2.7 mm. At one of the transitions from the round side 61b to the straight side 62b are three transition sections 76, 89 and 88 and the cutout 84. From the round side 61b, the straight transition section 76 follows first in a clockwise direction, followed by the straight transition section 89, the cut-out 84 and finally the rounded transition section 88.

[0129] From the round side 61b, the straight transition section 76 is the first to follow in a counterclockwise direction, followed by the kinked transition section 86, the rounded transition section 87 and finally the rounded transition section 88.

[0130] The cross-sectional diameter from the transition section 86 to the transition section 89 is 5.8 mm long. The cross-sectional diameter from the straight side 62b to the furthest point of the round side 61b is 5.5 mm.

[0131] The clamp body 77 comprises substantially the same cross-section. However, the round side 61c of the sprag cross-section comprises a radius of 3 mm with a tolerance of +/−0.05 mm. The round side 61c merges directly into the transition sections 86 and 89.

[0132] FIG. 8 shows a bottom view of the adapter element 6. The bottom side 10 of the adapter element 6 with a rectangular base can be seen. A fastening opening 12a is arranged at the narrow end 11a of the base surface. The attachment aperture 12a comprises a substantially triangular shape, the inner tip 13a being rounded with a radius of 3.05 mm. The side 13b opposite the tip 13 is open so that the fastening opening 12a can communicate with the clamping element 3b (cf. FIG. 1).

[0133] A fastening opening 12b is arranged at the further narrow end 11b of the base. The fastening opening 12b essentially comprises an elongated hole, i.e. two parallel sides 14a with here an end rounding 14b. The side 14c opposite the end rounding 14b is open so that the fastening opening 12b can communicate with the screw system 3a (cf. FIG. 1). The edges 15 of the open side 14c are rounded with a radius of 3 mm.

[0134] In the centre of the underside 10 an air duct 17 is arranged which can be connected to an air delivery system for the nozzle (cf. FIG. 1). The air duct 17 has a cross-sectional diameter of 6 mm.

[0135] Furthermore, the adapter element 6 comprises two connection openings 16 for connecting to the nozzle 4 (cf. FIG. 1). These connecting openings 16 are designed as countersunk holes with an outer cross-sectional diameter of 3.2 mm and an inner cross-sectional diameter of 1.6 mm with a tolerance of H8.

[0136] Furthermore, the adapter element 6 comprises countersunk holes 18 on the underside 10. These countersunk holes 18 are used to attach a nozzle element of a different type (not shown here).

[0137] In this embodiment, the adapter element 6 is manufactured in one piece with the protective element 5 as a stamped part. Therefore, the punched openings 19 can be seen here on the underside 10.

[0138] FIG. 9 shows a cross-section of a seal 90. The seal 90 is substantially conical with bevelled outer side walls 92 and straight inner side walls 93. The inner cross-sectional diameter is 6 mm. On the wide side 91a, the outer cross-sectional diameter is 10.8 mm with a tolerance of +/−0.15 mm. On the narrow side 91b the outer cross section diameter is 9.126 mm with a tolerance of +/−0.15 mm. The seal 90 is 2.3 mm high with a tolerance of +/−0.1 mm. The seal 90 is made of fluorocarbon rubber.

[0139] FIG. 10 shows a cross-section of the connecting element 2. The yarn guiding elements 24 arranged on the side can be seen, each of which comprises a recess 29 for receiving a yarn protection element 25 (cf. FIG. 1).

[0140] Below the recesses 29 are the openings 30, into which screws can be inserted for fastening the yarn protection elements 25 (cf. FIG. 1).

[0141] A central axis L of an air channel 20 is arranged in the middle of the connecting element 2. The air channel 29 comprises a thread for connection to a compressed air connection. The thread of the air channel 20 leads from a lower side 67 of the connecting element 2 6.5 mm in the direction of an upper side 27 of the connecting element 2. Adjacent to the air channel 20 is a conically shaped extension 65 in which the seal 90 can be arranged, with the wide side 91a resting against the end of the air channel 20 (cf. FIG. 9).

[0142] The holes 22 are counterbored holes, each having a large cross-sectional diameter of 9 mm with a tolerance of +/−0.1 mm and a small cross-sectional diameter of 5.3 mm. The central axis M of the holes 22 are 45 mm apart.

[0143] A quick-fit aperture 64 is located between each of the holes 22 and the air duct 20. The quick fastening openings 64 lead 8.5 mm from the upper side 27 of the connecting element 2 towards the lower side 67 of the connecting element 2. The quick fastening system 3 is arranged in the quick fastening openings 64 (cf. FIG. 1). The quick-fix openings 64 have essentially the same cross-section as the clamping body 77 and the sleeve element 33.

[0144] In addition, a fastening aperture 66 is arranged adjacent to each quick fastening aperture 64 (only one shown here). The fastening aperture 66 extends 7 mm from the top surface 27 of the connecting element 2 towards the bottom surface 67 and comprises a thread, with part of the circumference of the fastening aperture 66 being open to the quick fastening aperture 64. A fastening element 31 is arranged in each fastening opening 66, thus connecting the screw system 3a and the clamping element 2b to the connecting element 2 (cf. FIG. 2). In another embodiment, this fastening opening is only 1.6 mm deep with a tolerance of +/−0.05 mm and closed at the circumference (not shown here). The advantage of this embodiment is that there are no burrs in the quick-fix opening 64.

[0145] FIG. 11 shows a second embodiment of a sleeve element 133 in side view. Only the differences to the first embodiment of the sleeve element 33 are described here.

[0146] The sleeve element 133 comprises a guide 144 having a first straight section 134, a second section 135 having a pitch, a third straight section 136 and a fourth section 137 having a pitch. The second section 135 comprises a pitch of 18°, overcoming a height of 0.315 mm with a tolerance+/−0.05. The lower sidewall 134a is longer than the upper sidewall 134b. Similarly, the lower sidewall 136a is longer than the upper sidewall 136b.

[0147] The transitions between the sections 134, 135, 136 and 137 are rounded with radii between 0.5 and 2 mm, which allows easy guiding of the guide element 34 (cf. FIG. 3).

[0148] FIG. 12 shows another side view of the second embodiment of the sleeve element 133.

[0149] The section 138 of the guide 144 does not comprise a straight section but a slope, the end 139 being rounded. The section 138 comprises a height parallel to the axis of rotation D of 2.8 mm. The lower side 140 comprises a transition 140 with a radius of 0.5 mm.

[0150] FIG. 13 shows a third side view of the second embodiment of the sleeve element 133. Here, the sleeve element 133 also comprises a notch 149. In this embodiment, the incision 149 is 1.5 mm high and has a radius of 1.85 mm with a tolerance of +/−0.05 mm. The recess 149 is used to position the head of a screw so that it presses on the lower surface of the recess 149.