JPH0817687B2 - Machine for manufacturing rod-shaped articles - Google Patents

Description

The present invention relates to a machine for producing rod-shaped articles, in particular for use in the production of cigarettes and filter rods.

According to a first aspect of the present invention, a machine for producing rod-shaped articles comprises a continuous rod cutting device and a support base assembly, the support base assembly supporting means for supporting the bar during cutting, A substantially rigid beam for supporting the supporting means, a driving means for reciprocating the beam, and an elastic means for supporting the beam to pivot about one hypothetical axis, the supporting means comprising: An elastic means adapted to follow an arcuate path with respect to the axis, the elastic means moving the axis substantially transverse to the rod during reciprocal movement of the beam. And second means for allowing the axis to move substantially transversely to the rod and resisting the axis moving in a direction parallel to the rod. The first means and the second means are driven by the drive means. Is arranged such that the support means move substantially parallel to the rod during reciprocal movement, and lateral movement of the axis causes lateral movement of the support means in the arcuate path. It is adapted to at least partially compensate for directional movement.

In a preferred embodiment, the first means comprises means extending parallel to the longitudinal axis of the beam and, for example, one or more leaf springs, the second means extending transverse to said axis. Means, eg, one or more similar springs. These leaf springs are preferably made of glass fiber. The arrangement of the beams is preferably such that the rod support means is located at or near the upper end of the beam and the beam is effectively rotated about its lower end. The beam may move such that its lower end is constrained by said second means in a direction parallel to the direction of movement of the rod. First
The means may extend between an upper fixed mounting position and a lower position on the beam. With this arrangement, the beam is lifted during the reciprocating movement, which lifting movement (allowed by the second means) is able to compensate for the machining movement of the support means caused by the pivoting movement of the beam. it can. Thereby, a favorable movement of the support means in a direction parallel to the rod can be obtained. Here, when the beam is pivotally mounted, the tube-shaped support means for supporting the rod being cut have been compensated for any movement transverse to the rod as described above. Note that at times, during reciprocating motion, one will pivot about the lateral axis. Therefore, any tube or other supporting means closely surrounding the rod must be placed with sufficient clearance to allow this pivoting movement (on the order of ± 4 °). I have to. To facilitate initial insertion of the rod, the superior portion of the support means may have an outwardly flared entry.

According to a second aspect of the invention, a machine for producing rod-shaped articles comprises a continuous rod cutting device and a support base assembly, the support base assembly supporting the rod during cutting, and A fairly rigid beam for supporting the support means, a drive means for reciprocating the beam, and a first mounting means for permitting movement of the beam so that the support means can move in a direction parallel to the rod.
A second mounting means for permitting movement of the beam to move laterally with respect to the rod, the supporting means at least partially enclosing the rod during reciprocation by the drive means. Is bound to follow. Preferably, said first attachment means is a pivot means and said first and second means are arranged such that the pivot axis of the beam can move laterally with respect to the rod during said reciprocating movement. In this way, the path of the rod support means, which will describe an arc by pivoting about the axis of the beam, can be converted into a straight path by appropriate corrective movement of the axis during pivoting.

According to a preferred embodiment of the present invention, a machine for making bar-shaped articles includes a continuous bar cutting device and a support base assembly,
The support assembly includes means for supporting the rod during cutting and drive means for moving the support means, the drive means forming a bearing and a path for supplying pressurized lubricant to the bearing. And a housing (72) for receiving the lubricant that has passed through the bearing (42) and a means for forming a lubricant return path, and a means for forming the return path relative to the lubricant in the housing. And a collecting means (92) that can be moved to a position such that the lubricant is pressed along another part (94) of the return path connected to the collecting means. Preferably, the housing is rotatable with the moving parts of the bearing and the collecting means is stationary.
Therefore, the housing may include a substantially cylindrical chamber,
The collecting means may include a tube or scoop having an inlet portion adjacent the inner surface of the chamber, so that the lubricant that has moved to the circumferential surface of the chamber by the action of centrifugal force is applied to the tube or scoop. The pressure collected by it causes the resulting pressure to move the lubricant outward along the return path.

Preferably, the supply and return paths are on opposite sides of the bearing. The housing or chamber may be at least partially rotatably supported by another bearing supported by the collecting means or by means forming a return path connected to the collecting means.

This bearing is particularly useful as a large end bearing for a connecting rod extending between the driven crankshaft and the support means. here,
It has been found that the conventional arrangement of lubricating this bearing is unsatisfactory at the high speeds and loads currently encountered in continuous bar making machines. In particular, grease lubricant bearings generally operate at high temperatures, resulting in the need for frequent replenishment of grease.
Similarly, a device that circulates a fluid lubricant, such as oil, from the main drive side to the bearing, and back under pressure back to the drive shaft, causes significant oil turbulence in the bearing, which The bearings will be run at very high temperatures. In the currently proposed arrangement, the action of centrifugal forces in the collection chamber or housing creates a pressure that causes the lubricant to move along the return path, so that the lubricant can be fed through the bearing at a relatively low pressure. . While the preferred arrangement requires the addition of additional components on the side of the bearing opposite the main drive, these components are balanced with respect to the axis of the passive shaft and do not provide any additional rotation during constant speed rotation of the drive shaft. It is possible to prevent the load from being applied.

The first to third features of the present invention can be applied to the same machine.

In principle, the bearings according to the invention can also be used in machines other than continuous rod manufacturing machines.

Hereinafter, the present invention will be further described with reference to the accompanying drawings.

Referring to FIGS. 1 to 4, a support base consisting of a pair of rod supporting tubes 10 is supported on the upper end of a rigid beam 12.
The beam 12 is made of an aluminum alloy or other strong material, and has a mechanical structure having high bending resistance in a plane including the longitudinal axis and high torsional resistance around the axis. The beam 12 has a lower mount 14 and an upper mount 20, at which beam the horizontal glass fiber spring 16
Is connected to the fixed support mounting portion 18 by
At 20 the beam is connected to another fixed support mount 24 by a pair of vertical glass fiber springs 22.

The support mounts 18, 24 form part of the frame 26 of the bar making machine and serve to hold the beam 12 so that the bar supporting tube 10 lies on the bar line 28 of the machine. The location of the tubes 10 also allows a rod cutting knife 30 (FIG. 2) carried by the rotary cutting drum 32 to pass between the tubes 10. A deburring wheel 34 is provided on the knife 30.

The beam 12 is connected by a small end bearing 38 near its upper end.
It is connected to one end of 36. The connecting rod 36 is at the opposite end,
It is connected to a crank type drive member 40 (Fig. 3) by a large end bearing 42. The drive member 40 and the cutting drum 32 are synchronously driven by the motor of the bar making machine.

The beam 12 is symmetrical about the central longitudinal axis. Therefore, for balance, a pair of dummy tubes 44 are supported on the upper end of the beam on the side of the small end bearing 38 opposite the supporting tube 10.

The connecting rod 38 is driven by a drive member 40, the upper end of the beam 12 supporting the rod supporting tube 10 reciprocates on the rod line 28, and the rod is cut between the rod supporting tubes 10, 10. Knife 30
It is designed to support the rod when it has been cut through. During angular displacement of the beam 12 by the connecting rod 36, a horizontal spring 16 holds the beam base in substantially the same vertical plane, so that in effect the beam pivots beneath it about the mounting 14. When the beam 12 is displaced from the vertical position, the vertical spring 22 bends. This deflection is noticeable as it causes a pivotal movement about the fixed mount 42, but also causes the spring 22 to bend. Due to this combined effect, the mounting portion 20 and the entire beam 12 are lightly lifted together. The horizontal spring 16 flexes slightly upward to allow this lifting action.

The angular displacement of the beam 12 due to the effective pivoting movement about the lower mount 14 is assumed to be constant if the vertical position of the lower mount 14 remains constant and the rod support tube 10 The vertical position of would be to move the rod support tube 10 so that it would be lowered on both sides of the vertical position of the beam 12. However,
The above-mentioned movement of the spring 22 lifts the beam 12 and the horizontal spring 22
Allows for this movement, so the lowering movement of the tube 10 is less than it would otherwise be. The dimensions of the beam 12 and the spring 22 (and the bending characteristics of the spring 22 in the smaller range) are such that the beam 12 is lifted as it flexes, and this rise is at least within the range of the angular displacement that the connecting rod 36 produces. Sufficient to compensate for the downward movement so that the tube 10 is determined to follow an approximately straight line path in equilibrium with the rod line 28. Here, the tube 10 is slightly tilted due to the angular displacement of the beam 12, and there must be sufficient clearance to allow the bar to pass over the bar line 28 through the tube during the maximum tilt that causes the maximum angular displacement of the beam. Note that it has to be. Furthermore, in order to facilitate the first passage of the rod through the tube 10 when the beam 12 can be angularly displaced,
The beam may be formed with an outwardly extending lead-in portion and an outlet portion, as shown in more detail in FIG.

FIG. 4 shows the support tube 10 displaced to the most upstream side with respect to the moving direction of the rod 28A on the rod line 28. The tube 10 includes an upstream portion 10A and a downstream portion 10B separated by a gap having a width that allows the cutting knife 30 to pass through. In use, the knife 30 is normally in contact with the surface of the downstream portion 10B and is supported thereby during cutting.
Each of the upstream and downstream portions 10A, 10B has a relatively short cylindrical inner box 11A, 11B and an outwardly extending retraction and outlet portion 13A, 13B. The retracted portion 13A is the outlet portion 13B
Much longer than. Both of these sections 13A, 13B are sufficiently sloped to provide clearance for rod 28A at the maximum displacement of tube 10.

The vertical springs 22 provide lateral stiffness that resists the cutting forces transmitted to the beam 12 as the cutting knife 30 cuts through the rod. The horizontal spring 16 provides lateral stiffness to the base of the beam, and in particular resists any tendency of the beam to twist about its vertical axis.

The vertical spring 22 is tapered from the fixed mounting portion 24 toward the mounting portion 20. This allows the mounting part on the beam 12 to
20 can be made smaller and therefore lighter, and the bending and lateral strength of the spring 22 can be maintained appropriately. Horizontal spring 16 is also attached
It is possible to taper from 18 to the mounting portion 14. However, if the spring 16 is provided with a constant width equal to or less than the width of the base of the beam 12, proper strength can be obtained, and it is no advantage to give the spring 16 and the mounting portion 14 a width smaller than the base of the beam 12. Can't get On the contrary, there is a drawback that lateral rigidity is reduced. The spring 22 is symmetrical about the central longitudinal axis, reducing the likelihood of exerting a torsional force on the beam 12 about its longitudinal axis. For the same reason,
The spring 22 is aligned with the central plane of the beam 12 (as shown in FIG. 3), but the spring is offset from this plane,
This allows the attachment portion 20 to have a lighter structure.

The springs 16,22 are preferably made of fiberglass. A suitable material is Heat in Newcastle-under-Lyme, City of Stathus
Available from hcote Plastics, this is Scotchply Reinfo
It is called rced Plastic type 1002 crossply (13ply).

Typical major dimensions of the assembly of FIGS. 1-4 are as follows:

Beam depth 160mm Beam width (base) 80mm Beam width (near connecting rod 36) 45mm Spring 22 length (between mounting parts) 160mm Spring 22 width 20-38mm Spring 16 length (between mounting parts) 160mm Width of spring 16 80mm Thickness of springs 16 and 22 3.2mm Deflection of rod support tube 10 ± 32mm (± 4 °) Deflection of spring 22 ± 6mm Deflection of spring 16 0 to 1mm Length of connecting rod 36 168 mm FIGS. 5 and 6 show the portion of the drive member 40 in which the bearing assembly is incorporated. This bearing assembly is the large end of the connecting rod 36 of the support base assembly of FIGS. Includes bearings suitable for use as bearing 42. The bearing 42 includes a bearing shell 52 carried by a crankshaft 54 drivingly connected to a drive shaft 56 having an axis 58. The bearing shell is supported on the crankshaft 54 by a roller bearing assembly 60. The end of the crankshaft 54 far from the drive shaft 56 is a non-center sleeve.
Supporting a substantially circular substrate 62 having 64. The sleeve portion 64 is keyed to the crankshaft with a key 66, a tightening plate 68 and a bolt 70, and is tightened. A dome-shaped cover 72 is connected to the base plate 62, and has an integral sleeve portion 74 centered in the axial direction including a bearing 76 rotatably supported on a hollow short shaft 78. The axis of the minor shaft 78 is located on the axis 58 of the drive shaft 56. A pipe assembly 80 is connected at a right angle to the end of the minor axis 78 and is supported by a flexible mount 82 which rests on a fixed surface 84 of the bar making machine. Pipe assembly
80 is connected to another pipe assembly 87 leading to an oil sump (not shown) in the machine.

The base plate 62 supports the counterweight 63, and the crankshaft
An additional component that is not symmetrical about axis 58 and is connected to 54 is balanced about axis 58. These components mainly include the clamping plate 68, the bolt 70, and the annular sleeve portion 65 of the base plate 62 which supports the oil seal 67 surrounding the end of the crankshaft 54. The crankshaft 54 has its own integral counterweight 55.

In use, oil is pumped from an oil sump into a passage 86 in drive shaft 56 and through passage 88 in crankshaft 54 to lubricate bearing 60. Excess oil 93 (Fig. 6) enters chamber 90 and then centrifugally enters collection tube 92. The oil collected in the tube 92 is located on the short axis 78
Flow through 94 and return to the sump by pipe assemblies 80,84. The bearing 76 is partly lubricated by a discharge passage 96 extending from the passage 94.

A slightly modified bearing assembly is shown in FIGS. The operation is similar to that of FIGS. 5 and 6, and the same reference numerals are attached to parts having similar functions. The differently shaped collection tubes 92 of FIGS. 7 and 8 are shown in FIG.
It is believed to be much more efficient in collecting the oil in chamber 90 than those in FIGS.

[Brief description of drawings]

FIG. 1 is a perspective view of a support base assembly. 2 is an end view of the support base assembly of FIG. FIG. 3 is a side view of the support base assembly of FIG. FIG. 4 is a partially enlarged detailed view of the support base assembly of FIG. FIG. 5 is a cross-sectional view of a bearing assembly suitable for use with the support base assembly of FIG. FIG. 6 is a partial detailed view of the bearing assembly of FIG. FIG. 7 is a cross-sectional view of a modified bearing assembly suitable for use with the support base assembly of FIG. FIG. 8 is a partial detailed view of the bearing assembly of FIG. In the drawing, 10 ... a tube for supporting a rod, 12 ... a beam, 14
...... Lower mounting part, 16 ...... Spring, 18 ...... Fixed support member, 20
...... Upper mounting part, 22 ...... Spring, 24 ...... Fixed support mounting part,
26 …… frame, 28 …… bar line, 30 …… bar cutting knife, 32 …… rotary cutting drum, 34 …… deburring wheel,
36 …… Connecting rod, 38 …… Small end bearing, 40 …… Driving member, 42…
… Large end bearing, 52 …… Bearing shell, 54 …… Crankshaft, 56
...... Drive shaft, 60 …… Roller bearing assembly, 62 …… Board, 64…
… Sleeve part, 66 …… key, 68 …… tightening plate, 70 …… bolt, 72 …… cover, 74 …… sleeve part, 76 …… bearing, 78
...... Short axis, 80 …… Pipe assembly, 82 …… Flexible mounting part,
84 …… Fixed surface, 87 …… Pipe assembly, 90 …… Room, 92 ……
Collection tube, 94 ... passage, 96 ... discharge passage.

Claims (20)

[Claims] 1. A machine for manufacturing rod-shaped articles, comprising a continuous bar cutting device and a support base assembly, the support base assembly supporting the bar during cutting, and the support means. A substantially rigid beam for supporting, drive means for reciprocating the beam, and elastic means for supporting the beam for pivoting about one hypothetical axis, the supporting means being relative to this axis. An elastic means adapted to follow an arcuately curved passage, the elastic means being capable of moving the axis substantially transversely to the rod (28A) during reciprocation of the beam. The first means (22) for allowing the
Second means (16) for allowing the axis to move in a direction substantially transverse to A) and resisting the axis moving in a direction parallel to the bar (28A), While the first means (22) and the second means (16) are reciprocated by the driving means (36), the supporting means (1)
0) is arranged to move substantially parallel to the rod (28A) and the lateral movement of said axis at least partly results in the lateral movement of said support means in said arcuately curved passage. Machines that are designed to compensate for each other. 2. A machine according to claim 1, characterized in that said first means (22) is connected so as to allow reciprocating movement of the intermediate portion of said beam. 3. Machine according to claim 1 or 2, characterized in that said second means (16) are arranged such that they can reciprocate in said lateral direction. 4. The machine according to claim 2 or 3, wherein the reciprocating motion is a rotary motion. 5. Machine according to any one of claims 1 to 4, characterized in that said first means (22) extend parallel to the longitudinal axis of the beam (12). ) The machine characterized by including. 6. Machine according to any one of claims 1 to 5, characterized in that the second means extend transversely to the longitudinal axis of the beam (12). 16)
A machine characterized by including. 7. A machine according to claim 5 or 6, characterized in that said first means (22) and said second means (16) comprise at least one leaf spring. machine. 8. The machine according to any one of claims 1 to 7, wherein the beam (12) is provided at each of the portions (20, 14) separated in the longitudinal direction thereof. 1
A machine characterized by being connected to a means (22) and a second means (16). 9. The machine according to claim 8, wherein the parts (20, 14) are constrained by first means (22) and second means (16), respectively, and the beam (12). The machine is characterized in that it follows different arc paths when being reciprocated by the drive means (36). 10. A machine according to any one of claims 1 to 9, wherein the supporting means (10) is supported at one end of the beam (12) or in the vicinity thereof. A machine characterized in that the second means (16) is connected to the opposite end of the beam or in the vicinity thereof. 11. Machine according to claim 10, wherein the second means (16) are in a direction parallel to the longitudinal movement of the rod (28A) passing through said support means (10). A machine characterized by substantially preventing movement of said opposite end of a beam (12). 12. A machine according to any one of claims 1 to 11, wherein the first means (2
2) A machine characterized in that 2) extends from the fixed mounting portion (24) to the connecting portion of the beam (12) in a direction away from the supporting means (10). 13. A machine for producing rod-shaped articles, comprising a continuous rod cutting device and a support base assembly, the support base assembly supporting the rod during cutting, and the support means. A fairly rigid beam for supporting, a driving means for reciprocating the beam, and a first for permitting movement of the beam (12) so that the supporting means (10) can move in a direction parallel to the rod (28A). One mounting means (20-24) and a second mounting means (14-24) allowing the movement of the beam so that the supporting means can move laterally with respect to the rod.
18) and wherein said support means is constrained to follow a substantially straight path at least partially surrounding the rod during reciprocation by said drive means (36). 14. The machine according to claim 13, wherein the drive means (36) is the second attachment means (14-18).
Beams (12) around the pivot axis defined by
To move the pivot axis transversely to the longitudinal path of the rod (28A) through which the first mounting means (20-24) pass through the support means (10). A machine characterized by including. 15. The machine according to claim 14, wherein the first attaching means (20 to 24) is a rotating means. 16. A machine according to any one of claims 1 to 15, wherein the drive means constitutes a bearing and a path for supplying a pressurized lubricant to the bearing. And a housing (72) for receiving the lubricant that has passed through the bearing (42), and a means for forming a return path of the lubricant, A movable collecting means (92) for pushing the lubricant along another part (94) of the return path connected to the collecting means. Machine to be. 17. A machine according to claim 16, wherein said housing (72) is rotatable with the moving part of said bearing (42) and said collecting means (92) is fixed. A machine characterized by being. 18. A machine according to claim 16 or 17, wherein said housing comprises a chamber (90) having a substantially cylindrical portion, said collecting means being within said cylindrical portion. A means (92) disposed adjacent to the peripheral surface for collecting the lubricant having moved to the peripheral surface of the cylindrical portion by the action of centrifugal force and pressing the lubricant along the return path (94). A machine characterized by: 19. The machine according to any one of claims 16 to 18, wherein the supply path (86, 88) and the return path (94, 80) are a bearing (42). Machines characterized by being on both sides of. 20. A machine as claimed in any one of claims 16 to 19 in which the housing (72) is supported by or connected to collecting means (92,78). A machine characterized in that it is at least partially rotatably supported by another bearing (76).