JPS6310049B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has freely rotatable stacking rollers arranged on a conveyor chain so as to protrude on both sides of the conveyor chain, and individual items placed on the stacking rollers are stacked. Sometimes it relates to a continuous conveyor for transporting individual products (particularly cigarette packs), in which the collecting rollers rotate below the individual products.

When transporting individual items by means of a continuous conveyor, unlike bulk items, the items cannot be transported as a continuous stream, and when transporting individual items there are irregular large gaps between them. Or small intervals occur. Therefore, when the pieces are fed continuously and discharged discontinuously, it is necessary to accumulate the pieces at the ends of the continuous conveyor.

In order to solve this problem of accumulation, a continuous conveyor as mentioned at the outset is provided, which is disclosed, for example, in Japanese Patent Laid-Open No. 56-23109. In this continuous conveyor, the pieces to be transported rest on several accumulating rollers that project on either side of the conveyor chain. As long as the items are transported unhindered at the transport speed of the continuous conveyor, the conveyor chain moves the collecting rollers together with the items, and the collecting rollers are idle. If the items are to be accumulated, they will be transported at a speed lower than the speed of the conveyor chain or will come to a complete stop. As soon as this happens,
The accumulating rollers on which the individual items are placed perform a rotational movement. As a result, speed differences between the pieces and the conveyor chain are compensated for without creating mechanical friction between the pieces and the conveyor chain.

However, in the continuous conveyor disclosed in JP-A-56-23109, each accumulating roller is attached to one chain bolt that projects laterally from the link of the conveyor chain, and this chain bolt alone Supported. According to this mounting method of the collecting roller, the collecting roller is cantilever-supported by the conveyor chain via only one chain bolt.
A stable structure cannot be obtained.

The present invention aims to eliminate such conventional drawbacks.

To achieve this object, according to the invention, in the continuous conveyor mentioned at the outset, each link of the conveyor chain, which serves as a holding member for the accumulating rollers, has two equally laterally projecting chain bolts. A collecting roller is disposed on at least one chain bolt, and an end plate connecting the chain bolts is disposed at the free ends of both chain bolts.

According to such a configuration, the stacking roller is supported by the conveyor chain via two chain bolts connected to each other at the end plate, so that a stable structure can be obtained.

Embodiments of the present invention will be described below with reference to the drawings.

This embodiment is used for transporting individual items 11, for example cigarette cartons having the elongated shape of a rectangular parallelepiped.

In this embodiment, the conveyor chain 10 is comprised of interconnected chain links.
Each chain link has two side plates 20 and 21
The outer plate 20 is alternately connected to the two inner plates so as to partially overlap the inner plate 21. All side plates 20 and 21 have openings 22 and 23, respectively, in their end regions, in order to connect the side plates 20, 21 arranged next to each other.
Bolts pass through these apertures. The sheath 25 is attached to each bolt between the side plates 20 and 21 as a spacer. These capsular sheaths are formed with different levels at their end faces and are supported inside the outer plate 20,
Moreover, the inner plate 21 is secured with a slight play. In this way, articulation between the individual chain links of the conveyor chain 10 is achieved.

The accumulating rollers 12 and 39 serve as transport members for the individual items 11 and are directed in the direction of transport (arrow 13).
Horizontal chain bolt 14 placed laterally in
is attached to the conveyor chain 10 so that it can rotate freely. The stacking rollers 12 and 39 have different structures. Accumulation roller 12
is made cylindrical with a continuous cylindrical surface over its entire length. In contrast, the accumulating roller 39 has on its cylindrical surface an additional tubular friction coating 40 made of a ductile material with a high coefficient of friction. By means of two surrounding collars 41 at the ends of the collecting roller 39, the friction coating is restrained axially on the collecting roller 39. Since the friction coating 40 is prestressed around the collecting roller 39, it is held against slippage by the frictional connection with the cylindrical surface of the collecting roller 39. In order to ensure that the individual items 11 rest only on the friction coating 40 of the accumulating roller 39, the collar 41 is attached to the friction coating 40.
has a diameter smaller than the outer diameter of. To reduce the friction of the collecting roller 39 against the components of the conveyor chain 10, the end face of the collecting roller 39 has a shoulder 42. Accumulating rollers 12 and 39
are made of abrasion-resistant plastic, especially polyamide. In contrast, the friction coating 40 is made of an elastomer, particularly silicone.

The conveyor chain 10 is arranged in the conveying direction (arrow 1
3) is supported and guided by a longitudinally extending sliding strip 15. This is U
It is arranged on the sliding track 16 so as to fit into the central recess in the sliding surface 17 of the shaped sliding track 16. Furthermore, the conveyor chain 10 has slides 18 fixed to it on both sides so as to move away from it. This sliding piece 18 is supported by the sliding surface 17 of the sliding track 16. When the conveyor chain 10 moves, the sliding piece 18 fixed thereto slides along the sliding surface 17 while being supported by it, and thus the conveyor chain 10 is moved by the sliding piece 18.
is held against sideways tilting in the transport direction (arrow 13). In addition to the sliding surface 17, the U-shaped sliding track 16 has two lateral vertical guiding side walls 19. A guiding side wall 19 extending in the longitudinal direction of the conveyor chain projects at its upper end above the plane formed by the collecting rollers 12 . In this way, the individual items 11 are guided laterally on the conveyor chain.

FIG. 1 shows an example of the arrangement of the collecting rollers 12 relative to the conveyor chain 10. FIG. The arrangement of the slide 18 relative to the collecting roller 12 is also shown in FIG. Here, the collecting rollers 12 are arranged in groups uniformly distributed across the conveyor chain 10. In this, the accumulating rollers 12, seen in the conveying direction (arrow 13) of the conveyor chain,
Since they are arranged alternately one after the other on both sides of the conveyor chain 10, the weight of the individual items 11 is evenly transmitted to the conveyor chain 10. Depending on the type and weight of the items to be transported, there may be other distributions of the collecting rollers 12 and the slides 18.

The contours of the sliding strip 15 and the sliding track 16 are shown in FIGS. 4 to 7. Here, the sliding strip 15 has an approximately rectangular contour, which is partially embedded in the central recess of the sliding surface 17 of the sliding track 16. sliding strip 15
has on its top side two lateral plays 27 of equal dimensions and rectangular cross section. According to this,
A central web 28 is formed on the top side of the sliding strip 15 for reliable guidance of the conveyor chain 10 between the inner sides of the inner plate 21. The width of the web 28 is slightly less than the internal spacing between the inner plates 21 of the conveyor chain 10.

In order to ensure good sliding properties between the conveyor chain 10 and the sliding strip 15, the sliding strip is made of plastic, especially polyamide.

The height of the sliding strip 15 is determined according to the diameter of the collecting roller 12 so that the cylindrical surface of the collecting roller does not come into contact with the sliding surface 17 of the sliding track 16. On the other hand, the diameter of the accumulating roller 12 is such that the individual items 11 placed on it are
must be determined so as not to touch the top side of the

The attachment of the gathering roller 12 to the chain bolt 14 is shown in FIGS. 2 and 4. The collecting roller 12 has a longitudinally extending central hole 29, which serves for the sliding attachment of the collecting roller 12 to the chain bolt 14. Two equal chain bolts 14 are used to support the collecting roller 12. These chain bolts are
It replaces the usual short bolts that serve to connect the two outer plates 20 to the inner plates 21 of two adjacent chain links of the conveyor chain 10. The collecting roller 12 is attached to one of the two chain bolts 14, but the second chain bolt 14 does not have the collecting roller 12 attached thereto and has a spacer sleeve 30. The length of the spacer sleeve 30 is the same as that of the collecting roller 12.
It is determined that there is sufficient play between the collecting roller 12 and the stop disc 33 to allow the rollers to rotate easily. If possible at the same time, the end face of the spacer sleeve 30 and the conveyor chain 10 facing this
Between the surface of the outer plate 20 and the surface of the end plate 31,
In this way, the side plates 20, 21 of the conveyor chain 10 and the sheath 25
are sufficiently tightened. With such a configuration, the chain bolt 14 will not tilt even when subjected to a load.

To facilitate rotation of the collecting rollers 12 around the chain bolts 14, a stop disc 33 of steel is provided between each end face of the collecting rollers 12 and the face of the outer plate 20 of the conveyor chain 10 facing thereto. It is arranged between the inner surface of the end plate 31 and the inner surface of the end plate 31 .

Similarly, the collecting roller 3 with a friction coating 40
9 can also be arranged and attached to the conveyor chain 10. In this case, the shoulders 42 arranged on the accumulating roller 39 on both sides serve as the stop discs 33, so that the stop discs can be omitted.

In the embodiment of FIG. 6, the chain bolt 14
A retaining ring 43 arranged at the free end of the accumulating roller 3 extends axially relative to the chain bolt 14.
Helps fix 9. In order to compensate for axial play when installing the accumulating roller 39, a retaining ring 43 and a shoulder 42 of the accumulating roller 39 facing it are provided.
There is a spacer washer 44 between them, which at the same time performs the function of a stop disc.

A method of increasing the rotational friction of the collecting rollers relative to the chain bolts 14 is shown in FIG.
Here, the central hole 29 in the collecting roller 12 is
(FIG. 2) is enlarged at and near the end face facing the conveyor chain 10 to become the receiving hole 34. A cup spring 35 is accommodated in the accommodation hole 34 , and a stopper disc 36 is disposed between the cup spring 35 and the end surface of the accommodation hole 34 . This stop disk 36 prevents the plastic collecting roller 12 from being damaged by the cup spring.

If the receiving hole 34 is made to a suitable depth, the cup spring 35 will press the stop discs 36 and 33 against the end face of the accumulating roller with a certain force, and the accumulating roller will be
As a result of the additional friction that occurs, it rotates around the chain bolt 14. Since several cup springs 35 can be used and stop discs 36 or 33 of different thicknesses can be used, the axial stress pre-applied to the accumulating rollers 12 can be increased in order to adapt the conveyor chain to the transport conditions. ,
It can change.

Accumulating roller 39 for chain bolt 14
The rotational friction of can also be increased in the same way.

The sliding piece 18 is attached to the two chain bolts 14, as shown in FIGS. 2 and 5. This sliding piece 18 is fixed by an end plate 31 and a chain shaft 32 which are attached to a chain bolt. Accumulating rollers 12 and 39
In contrast, the rectangular sliding piece 18 is firmly attached to the two chain bolts 14 by means of two apertures 37. Since the sliding piece 18 is made to have a smaller dimension along the chain bolt 14 than the accumulating rollers 12 and 39, the spacer sleeve 38 is formed between the outer plate 20 of the conveyor chain 10 and the sliding piece 18. So, each chain bolt 1
Deployed on 4th. Furthermore, a thin compensation washer 24
is arranged on the chain bolt 14 between the sliding piece and the end plate 31. In this manner, the sliding piece 18
Since it is fixed at the greatest possible distance from the conveyor chain 10, a great supporting effect is obtained by the sliding piece 18. Advantageously, the sliding piece 18 is made of wear-resistant plastic, in particular polyamide.

[Brief explanation of the drawing]

FIG. 1 is a diagrammatic plan view of a continuous conveyor. 2 is a partial view of the continuous conveyor according to FIG. 1, enlarged and partly in section; FIG. Figure 3 shows
3 is a side view of the continuous conveyor according to FIG. 2, showing the individual items on several accumulating rollers; FIG. Figure 4 is a significantly enlarged version of Figure 1 showing the individual items being placed on the stacking rollers.
It is a sectional view along a line. FIG. 5 is a significantly enlarged cross-sectional view taken along the line ``--'' of FIG. 1, showing the individual items placed on the collecting roller. 6 and 7 are views similar to FIGS. 4 and 5, respectively, showing a variant of the continuous conveyor. In the drawing, 10 is a conveyor chain, 11
12 is a collection roller, 14 is a chain bolt, 15 is a sliding strip, 16 is a sliding track,
17 is a sliding surface, 18 is a sliding piece, 20 is an outer piece, 2
1 is an inner piece, 25 is a sheath, 28 is a web, 30 is a spacer sleeve, 31 is an end plate, 33 is a retaining disc, 34 is a receiving hole, 36 is a retaining disc, and 39 is a collecting roller.

Claims (1)

[Claims] 1. The conveyor chain has stacking rollers that are disposed so as to protrude on both sides of the conveyor chain and can rotate freely, and when the individual items placed on the stacking rollers are stacked, the stacking rollers In a continuous conveyor for transporting individual items, in which the collecting rollers rotate below the individual items, each link of the conveyor chain 10, which serves as a holding member for the collecting rollers 12, 39, projects equally laterally. It has two chain bolts 14, an accumulating roller 12, 39 is arranged on at least one chain bolt 14, and an end plate 31 connecting these chain bolts 14 is arranged at the free end of both chain bolts 14. A continuous conveyor characterized by: 2 A sliding piece 18 that slides on the sliding track 16 for the conveyor chain is connected to the conveyor chain 1.
Continuous conveyor according to claim 1, arranged staggered on both sides of the conveyor belt. 3. Claim 2, in which one sliding piece 18 is assigned to several accumulating rollers 12, 39.
Continuous conveyor as described in Section. 4. The continuous conveyor according to any one of claims 1 to 3, wherein the collecting rollers 12, 39 include friction elements. 5 A sliding strip 15 provided on the sliding track for the conveyor chain has on its top side an approximately central web with a cross-section adapted to the dimensions of the conveyor chain 10; 5. A continuous conveyor according to any one of claims 1 to 4, wherein the internal distance between the opposing inner plates 21 is slightly larger than the width of the web 28. 6. Any of claims 1 to 5, wherein the chain bolts 14 have approximately equal lengths and extend laterally from the conveyor chain 10 to slightly exceed the width of the collecting rollers 12, 39. or the continuous conveyor described in item 1. 7 The spacer sleeve 30 protruding with a length slightly exceeding the length of the collecting rollers 12, 39 is attached to the second
7. A continuous conveyor according to any one of claims 1 to 6, which is arranged on a chain bolt 14 of. 8. Continuous conveyor according to claim 1, wherein the collecting rollers 12, 39 are made of plastic, in particular polyamide. 9. Continuous conveyor according to any one of claims 1 to 8, wherein each collecting roller 39 has a friction coating 40 on its cylindrical surface. 10. Claim 9, wherein the friction coating 40 is arranged in frictional connection with the accumulating roller 39.
Continuous conveyor as described in Section. 11 Each accumulating roller 39 has two lateral collars 4
1, with a friction coating 40 disposed therebetween;
A continuous conveyor according to claim 9 or 10. 12. A continuous conveyor according to claim 11, wherein the outer diameter of the side collars 41 is slightly smaller than the outer diameter of the friction coating 40. 13. Continuous conveyor according to any one of claims 9 to 12, wherein the friction coating 40 is made of an elastomer, in particular silicone. 14. In order to axially hold the end plate 31 on the chain bolt 14, a holding element, in particular a chain shaft, is arranged at the free end of the chain bolt 14. Continuous conveyor as described in Section. 15 At least one stop disc 33 is connected to each end face of the accumulating rollers 12, 39 and to the conveyor chain 1.
15. A continuous conveyor according to any one of claims 1 to 14, arranged between an outer plate 20 and an end plate 31 of a particular link of 0. 16 At least one end face of the accumulating roller 12 is provided with at least one spring element, in particular a cup spring 35.
16. A continuous conveyor according to any one of claims 1 to 15, having an inner receiving hole 34 for. 17. Continuous conveyor according to claim 16, in which a stop disc 36, 33 is arranged on each end face of the cup spring 35, respectively. 18 A cup spring 35 transfers the axial pressure of the stop discs 33, 36 to a specific accumulating roller 12, 3.
18. The continuous conveyor according to claim 17, wherein the depth of the inner receiving hole 34 and the number and thickness of the stopper discs 33, 36 are determined so as to act on the end face of the stopper disc 9. 19. Claims in which the sliding pieces 18 have the shape of a rectangular parallelepiped and each sliding piece 18 is attached to two chain bolts 14 designed similarly to the chain bolts 14 serving for the attachment of the collecting rollers 12, 39 Continuous conveyor according to item 2 or 3. 20 Each sliding piece 18 is connected to the accumulating roller 12, 39
A continuous conveyor according to any one of claims 2, 3 and 19, having a width approximately corresponding to half the width of the conveyor. 21 The outer plate 20 of the conveyor chain 10 located on the side of the sliding piece 18 and the sliding piece 1 facing this
20. A spacer sleeve 38 is arranged on each chain bolt 14, which has approximately the length of the area of the chain bolt 14 without a sliding piece 18 between the sides of the chain bolt 18. Continuous conveyor. 22. According to claim 20 or 21, at least one compensating washer 24 is arranged on each chain bolt 14 between the end plate 31 and the side of the sliding piece 18 facing thereto. continuous conveyor. 23. Continuous conveyor according to any one of claims 2, 3, 19 to 22, wherein the sliding piece 18 is made of plastic, in particular polyamide.