JPH08208029A - Sorting conveyor drive - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sorting conveyor drive device capable of reducing the number of parts relating to the drive of a transport roller and simplifying the assembly process and maintenance. A roller conveyor in which a conveyed object on the roller 4 is moved by rotation of a large number of rotatably supported rollers 4 and a conveyed object is sorted by a sorting pin 21 that moves a gap between the rollers. Drive chains 61 and 68 having pads 66 and 67 that contact the rollers to transmit the drive to the rollers, and a chain drive sprocket 62 having teeth that mesh only with the positions where the pads 66 and 67 of the drive chains 61 and 68 are not arranged. , 63, 65. A drive unit for a sorting conveyor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for a sorting conveyor for articles, and more particularly to a transport device for a sorting conveyor which is suitable for sorting irregularly shaped and heavy conveyed products.

[0002]

2. Description of the Related Art Wheel sorter type sorters, push type sorters, tilt type sorters, oblique belt type sorters and the like are known as sorting devices. With these sorting devices, for irregularly shaped conveyed items such as bags, since the bottom surface is soft and the shape is not constant, the sorting wheel may slip or the conveyed items may be caught. It was

Therefore, as one solution to this problem,
For example, in Japanese Utility Model Publication No. 4-50246 shown in FIGS. 5 and 6, a plurality of conveying rollers 4 are provided as roller conveyors.
In the gap between the rollers, the rails 28, 31, 32 are
The sorting pin 21 is provided so as to be movable in the axial direction (perpendicular to the transport direction) of the roller 4 by the support member 35 guided by the above and to be projected from the transport surface.
It is possible to prevent the conveyed object from being caught by the appropriate clearance of the sorting pin 21.

In a device using such a sorting pin, as shown in FIG. 6 which is an XX section in FIG. 5, conventionally, power from a drive motor for rotationally driving the above-mentioned roller 4 is used. Since it is considered that a heavy object is conveyed as a drive transmitting means for transmitting the chain, the chain 5 is often used.
1 is used to suppress the occurrence of timing deviation. The chain 51 is arranged so as to mesh with a roller driving sprocket 55 fixed to each roller 4, and further, in cooperation with the roller driving sprocket 55, the chain 51.
An idler sprocket 53 is arranged on the side sandwiching the so as to prevent the chain 51 from coming off the roller drive sprocket 55.

[0005]

In the sorting device as described above, a structure such as a roller driving sprocket and an idler sprocket is required due to the use of a chain, and since these are required for each roller, the number of parts is reduced. It is increasing, and it is troublesome with respect to maintenance during assembly and use. SUMMARY OF THE INVENTION It is an object of the present invention to provide a sorting conveyor drive device capable of reducing the number of parts and simplifying the assembly process and maintenance accompanying it.

[0006]

SUMMARY OF THE INVENTION The above object of the present invention is to convey a conveyed product on a plurality of rotatably supported rollers by means of rotation of the rollers, and to convey the conveyed product by a sorting pin which moves a gap between the rollers. And a chain drive sprocket having a tooth that meshes only with a position where the pad of the drive chain is not arranged, the drive chain having a pad that contacts the roller surface and transmits the drive to the roller. This is achieved by the configuration having and.

The drive chain described above can be constructed as a double chain that moves in parallel and simultaneously, one of which is provided with pads and the other of which is constructed so that the drive sprockets engage. Further, the above-mentioned drive chain may be one, and in this case, it is divided into a pad disposition portion and a portion where the teeth of the chain drive sprocket mesh.

[0008]

In the drive unit for the sorting conveyor according to the present invention, since the drive can be directly transmitted to the roller by the pad provided on the drive chain, the roller drive sprocket and the side facing the roller drive sprocket provided on the shaft of the roller. It is possible to omit the structure such as the idler sprocket, and it is possible to reduce the number of parts and to simplify the assembling process and maintenance accompanying it.

[0009]

The present invention will be described with reference to the embodiments shown below. FIG. 1 is a schematic cross-sectional view of a drive unit for a sorting conveyor, which is an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of a side view of the device shown in FIG. The same reference numerals are used for the same elements as those of the apparatus shown in FIGS. 5 and 6 shown as a conventional example.

As shown in FIGS. 1 and 2, this sorting apparatus is composed of a roller conveyor in which a large number of rollers 4 are rotatably provided in parallel at intervals in the longitudinal direction of the frame 2. The sorting pin 21 is provided so as to be movable in the vertical direction (roller axis direction) in the transport direction Z of the transported material and to project from the transport surface.

In a predetermined sorting section in the roller conveyor path, two sets of the sorting pins 21 are provided in the gap between the rollers 4. The plurality of sorting pins 21 of the same set are fixed to the support shaft 22 at the lower end, and both ends of each support shaft 22 are rotatably connected to the drive chain 24. It is preferable that the support shafts are connected to each other so as to face each other at a position that divides the entire circumference of the endless drive chain into two. Sorting pin 2 attached to each support shaft 22
There are provided a pair of laterally spaced sprockets 25 for moving 1 to the left and right, and an endless drive chain 24 hung on these sprockets 25. In addition, a guide device 27 is provided for the support shaft 22 and the endless drive chain 24 so that the sorting pins 21 can be moved to the left and right in a state where they are always vertical.

The guide device 27 has an oval shape and has two rail members 3 which are offset from each other in the longitudinal direction at curved portions.
A guide rail 28 composed of 1, 32 and this guide rail 2
Two rollers 33 and 34 as guide rollers that run along the rail members 31 and 32 of FIG. 8, and a substantially triangular support member 35 to which these rollers 33 and 34 are attached.
And have.

The rollers 33, 34 rotatably provided at the corners on the bottom side of the triangular support member 35 are guided and run along the guide rail 28 without changing the posture, that is, the direction of the triangular support member 35. In this case, it is easily apparent that the loci of the rollers 33 and 34 deviate from each other in the curved portion forming the oval locus. Then, the support member 35 guided by the three loci of the loci drawn by the rollers 33 and 34 and the locus drawn by the mounting pin 39 connected to the chain 24 that drives the support member 35 are separated by the sorting pin 21. At the same time, the drive chain 24 always drives the same posture.

Next, the structure of the drive mechanism for each roller 4 of the roller conveyor will be described from FIG. 1, FIG. 2, and FIG. 3 which is a view taken along the line Y--Y of FIG. An electric motor 60 is provided below the conveyor device, and a drive sprocket 65 is fixed to the drive shaft of the electric motor 60. The drive chain 61 is hung between the drive sprocket 65, the sprocket 62 provided at the lower end of the conveyor device in the longitudinal direction, and the sprocket 63 provided at both ends in the longitudinal direction of the conveyor device immediately below the roller 4. ing.

As can be seen from FIG. 2, the drive chain 61 is a double chain arranged in parallel, and the drive delivery chain 61a and the drive reception chain 61b are driven in pairs. . The drive delivery chain 61a is provided with a pad 66 in contact with the surface of each roller 4 in each space between the pins of the chain,
On the other hand, the drive receiving chain 61b is hung on the above-mentioned sprockets 65, 62, 63, so that the power from the electric motor 60 is transmitted to the pad 6 via the drive sprocket 65, the drive receiving chain 61b and the drive delivering chain 61a.
It is transmitted to each roller 4 by the contact of 6. As can be seen from FIG. 3, the pad 66 provided on the drive delivery chain 61a moves while being in contact with each roller 4, and each roller 4 can be reliably driven.

Therefore, it is possible to achieve drive transmission with less synchronization deviation, despite the very simple structure of the drive transmission system of the roller 4. Further, the chain of the present invention can be applied to a conveyor having a relatively long transportation distance. Here, as the material of the pad, it is preferable to minimize the displacement at the time of contact with the roller 4, for example, rubber or flexible resin having a high friction coefficient is preferable.

Further, in the apparatus of the embodiment shown in FIG. 1, the drive of the roller 4 and the drive of the sorting pin 21 are transmitted from the same power source, which makes it easy to synchronize them. In this structure, the sprocket 62 further includes a drive sprocket 4 for driving the sorting pin 21.
8 is fixed, and power is transmitted from the sprocket 48 to the sprocket 47 provided in the forward / reverse rotation unit 46. In the forward / reverse rotation unit 46, the sorting pin 21
Of the sprocket 40 that transmits power to the chain 24 that drives the support member 35 is transmitted to the shaft 41 of the sprocket 40.

The drive transmission system described above is only one embodiment, and the drive of the roller 4 and the drive of the sorting pin 21 can be performed by different systems.

Now, FIG. 4 shows another example of the structure of the drive chain of the roller 4, which can be achieved by one drive chain as follows. As shown in FIG.
The pad 67 is provided in every other space between the pins of the chain 68. At this time, although not shown, the sprockets 62, 63, and 65 to which the chain is hung are configured such that every other tooth is hung on the space between the pins of the chain 68, thereby forming a single chain. Drive can be transmitted with. Since it is possible to dispose a larger pad 67 than the pad 66 of the first embodiment, the contact area with the roller 4 does not become so small and sufficient performance can be achieved.

[0020]

As described above, according to the present invention, by driving a roller of a roller conveyor for sorting articles by sorting pins by a drive chain having a pad, the drive can be directly transmitted to the roller by the pad. Therefore, the structure such as the roller driving sprocket provided on the roller shaft and the idler sprocket on the side opposite to the roller driving sprocket can be omitted, and the number of parts can be reduced and the assembling process and maintenance can be simplified.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a drive unit for a sorting conveyor, which is an embodiment of the present invention.

2 is a schematic cross-sectional view of the device of FIG. 1 as seen from the side.

FIG. 3 is a view taken along the line YY of FIG.

FIG. 4 is a view showing another embodiment of the drive chain.

FIG. 5 is a schematic sectional view of a conventional sorting conveyor.

FIG. 6 is a view on arrow XX in FIG.

[Explanation of symbols]

 2 Frame 4 Roller 21 Sorting pin 24 Sorting pin drive chain 35 Sorting pin support member 28, 31, 32 Rail 51 Roller drive chain 53 Idler sprocket 55 Roller drive sprocket 60 Electric motor 61,68 Roller drive chain 61a Drive delivery chain 61b Drive reception chain 62, 63, 65 Sprocket 66, 67 Pad

Claims (3)

[Claims] 1. Sorted goods are sorted by sorting pins (21) that move the transported articles on the rollers (4) by the rotation of a number of rotatably supported rollers (4) and that move through the gaps between the rollers. In the roller conveyor, the drive chain (61, 67) having pads (66, 67) that come into contact with the surface of the roller (4) and transmit the drive to the roller (4).
68), and the pads (66, 66) of the drive chain (61, 68)
And 67) a chain drive sprocket (62, 63, 65) having teeth that engage with each other only at a position where 67) is not arranged. 2. The drive chain (61) is configured as a double chain that moves in parallel and integrally at the same time, one chain (61a) is provided with the pad, and the other chain (61b) is provided with the drive sprocket (61). 62,6
3. The drive unit for the sorting conveyor according to claim 1, wherein the driving units are engaged with each other. 3. The drive chain (68) is one and is composed of a portion where the pad (67) is arranged and a portion where the teeth of the sprocket (62, 63, 65) mesh with each other. The drive device for the sorting conveyor according to claim 1.