Abstract
The object of the application is a supporting element (3, 3, 33) for a tobacco industry machine designed to support a continuous rod, moving axially (2) during cutting by a rotationally mounted knife (4), whereas the supporting element (3, 3, 33) comprises an at least partially cylindrical supporting surface (10) for the continuous rod (2), having a longitudinal axis (11), moreover the supporting element (3, 3, 33) has a front surface (8) constituting a cutting surface, characterised in that the front surface (8) has a depression (12, 12, 42).
Claims
1. A supporting element (3, 3, 33) for a tobacco industry machine designed to support a continuous rod, moving axially (2) during cutting by a rotationally mounted knife (4), whereas the supporting element (3, 3, 33) comprises an at least partially cylindrical supporting surface (10) for the continuous rod (2), having a longitudinal axis (11), moreover the supporting element (3, 3, 33) has a front surface (8) constituting a cutting surface, characterized in that the front surface (8) has a depression (12, 12, 42).
2. The supporting element of claim 1 characterized in that the depressed surface (13, 13) is parallel to the front surface (8).
3. The supporting element as in claim 1 characterized in that the depressed surface (13A) is situated at an angle to the front surface (8).
4. The supporting element of claim 1 characterized in that the width of the depression (12, 12, 42) is equal to or greater than the diameter of the cylindrical supporting surface (10).
5. The supporting element of claim 1 characterized in that the outer part (17) of the front surface (8) is conical.
6. The supporting element of claim 1 characterized in that the front surface (8) is perpendicular to the longitudinal axis (11) of the supporting surface (10).
7. A machine (100) for manufacturing of rods in the tobacco industry provided with a feeding unit (200) arranged to feed a filling material, a unit (300) arranged to feed a wrapping material, a continuous rod forming unit (400), and a cutting unit (500) provided with a rotating cutting head (5), characterized in that the cutting unit (500) is provided with a supporting element (3, 3, 33) according to claim 1, situated so that the axis (19) of the depression (12, 12, 42) is directed convergently with the direction of movement (K) of the knife (4) mounted on the rotating head (5).
Description
DRAWING
[0013] The object of the invention was shown in detail in a preferred embodiment in a drawing in which:
[0014] FIG. 1 shows a fragment of a rod manufacturing machine,
[0015] FIG. 2 shows a cutting sleeve in a first embodiment,
[0016] FIG. 3 shows the cutting sleeve in a second embodiment,
[0017] FIG. 4 shows cutting of a continuous rod, whereas the supporting element as in the first embodiment is used,
[0018] FIG. 5 shows a cross-section through two supporting elements of FIG. 4,
[0019] FIG. 6 shows the supporting element in a third embodiment,
[0020] FIG. 7 shows cutting of the continuous rod, whereas the supporting element as in the third embodiment is used,
[0021] FIG. 8 shows cutting of the continuous rod, a supporting element for a double-track machine is used, and
[0022] FIG. 9 shows a multi-segment rod manufacturing machine.
DETAILED DESCRIPTION
[0023] FIG. 1 shows a fragment of a machine for manufacturing rods 1 of a continuous rod 2 moving axially and lengthwise. The continuous rod 2 is conveyed in the direction T shown with the arrow and moves through cutting sleeves 3, 3 which are mechanically connected with each other and constitute a supporting unit 3A designed to support the continuous rod 2 during cutting. The cutting sleeves 3, 3 may be identical. The sleeves 3, 3 may be mounted to flexible springy elements 6 or in any other way typical for rod manufacturing machines of the tobacco industry. A drive mechanism designed to put the sleeves 3, 3 into reciprocating motion in the direction of movement of the continuous rod 2 is not shown in the drawing. The cutting sleeves and other elements fulfilling the same function will be hereinafter referred to as supporting elements.
[0024] The supporting element 3 shown in FIG. 2 has a cylindrical outer surface 7 and two front surfaces 8 and 9. The supporting element 3 has a substantially cylindrical guiding surface 10 situated coaxially to the outer surface 7, whereas the guiding surface 10 may be situated eccentrically to the outer surface 7. The supporting element 3 may have a freely shaped outer surface 7. The guiding surface 10 has a longitudinal axis 11 being the geometrical axis of the cylindrical surface. In the front surface 8, there is a depression 12 having a depressed surface 13 being substantially parallel to the front surface 8, lateral surfaces 14 and 15 and a cylindrical surface 16 which may be situated coaxially with the guiding surface 10. In the embodiment shown, the diameter of the cylindrical surface 16 is greater than the diameter of the guiding surface 10. The lateral surfaces 14 and 15 and the depressed surface 13 form a channel having an outlet 18 for the dirt produced during the cutting. The depression 12 has an axis 19 directed from the axis 10 to the outlet 18. The front surface 8 constitutes the cutting surface and is the surface over which the knife 4 moves when cutting the continuous rod 2. The depression 12 may be shaped in another way so that the front surface 8 may constitute the guiding surface for the knife 4. The depression 12 may be rectangular or have the shape of a truncated pyramid. The front surface 8 is chamfered, around the front surface 8 extends a conically shaped surface 17 which facilitates inserting the knife 4 into the gap between the supporting elements.
[0025] In the embodiment shown in FIG. 3, the supporting element 3 is similar to the supporting element 3 of the first embodiment. In the front surface 8, there is a depression 12 having a depressed surface 13 being substantially parallel to the front surface 8, lateral surfaces 14 and 15 and a cylindrical surface 16. In the embodiment shown, the diameter of the cylindrical surface 16 of the depression 12 is equal to the diameter of the guiding surface 10.
[0026] FIG. 4 shows location of the supporting element 3 relative to the knife 4 on the rotating head 5, on a manufacturing machine, rotating in the direction shown with the arrow. The supporting element 3 is positioned so that the depression 12 enables the dirt generated during the cutting to get out through the outlet 18. The axis 19 of the depression 12 is substantially convergent with the direction of movement K of the knife K 4.
[0027] FIG. 5 shows two supporting elements 3 in a cross-section A-A through the axis 2A of the continuous rod 2 (the cross-section is denoted in FIG. 4). The depressed surface 13 of the supporting element 3 is parallel to the front surface 8, whereas inclination of the depressed surface 13A shown with a broken line at the angle in the range between 0 and 10 is possible. Together the depressions 12 of both supporting elements 3 form a channel for the dirt produced during the cutting having a constant cross-section or widening in the direction of movement of the knife 4.
[0028] FIG. 6 shows the supporting element 33 which has the rectangular shape which is open on one side and having two front surfaces 38 and 39. The supporting element 3 has a partially cylindrical guiding surface 40 and two flat surfaces 51, 52. The guiding surface 40 has a longitudinal axis 41 being the geometrical axis of the cylindrical surface. In the front surface 38, there is a depression 42 having a depressed surface 43 being substantially parallel to the front surface 38, and lateral surfaces 44 and 45. The lateral surfaces 44 and 45 and the depressed surface 43 form a channel for the dirt produced during the cutting having an outlet 48. The depression 42 has an axis 49 directed from the axis 40 to the outlet 48. The front surface 38 constitutes the cutting surface and is the surface over which the knife 4 moves during the cutting of the continuous rod 2. The depressed surface 43 may be parallel to the front surface 38, it may be inclined relative to the front surface 38 similar to the previous embodiment. The supporting element may have the form of two supporting elements 33 connected with each other so that the depressed surfaces 43 are situated opposite to each other as shown in FIG. 5 for supporting elements in the first embodiment.
[0029] FIG. 7 shows location of the supporting element 33 relative to the knife 4 on the rotating head 5 which rotates in the direction shown with the arrow. The supporting element 33 is situated so that the depression 42 enables the dirt produced during the cutting to get out through the outlet 48. The axis 49 of the depression 42 is substantially convergent with the direction of movement K of the knife 4.
[0030] FIG. 8 shows the supporting element 63 in an embodiment for a double-rod making machine. The supporting element has the form of a double supporting element 33.
[0031] The supporting elements presented above are intended for the use in tobacco and filter rod manufacturing machines as well as in multi-segment filter rod manufacturing machines. FIG. 9 shows a machine 100 for manufacturing multi-segment filter rods. The machine 100 comprises a feeding unit 200 adapted to feed a filling material (in this case the filling material are segments made of various filter materials), a wrapping material feeding unit 300, a continuous rod forming unit 400 and a cutting unit 500. The filling material on the cigarette machine is tobacco, and on the filter machine a filtering material.
