JPS62196210A - Pallet conveyer - Google Patents

Abstract

PURPOSE:To make the attitude of pallets to be constant without a guide by arranging one of a pair of chains, which run synchronously in parallel with each other, in such a manner as being shifted by a predetermined distance from the other in the running direction, and arranging pairs of members for rotatably supporting both sides of pallets in an axially shifting manner in conformity with said distance. CONSTITUTION:Second sprockets 10a and 10b are in parallel to the first sprockets 2a and 2b disposed at the same interval between 10a and 10b as that between said first sprockets 2a and 2b, while the first chains 3 and the second chains 11 are respectively stretched between said intervals. The sprockets 10a and 10b are arranged at the position shifted by a preditermined distance (l) from the sprockets 2a and 2b in the running direction. Respective ones of rotatable members 40a and 40b coupled to chains are arranged on both sides of every pallet 30 while said members 40a and 40b are disposed at the same interval as that between the first and the second sprockets in the running direction. Each pallet 30 is thus supported by two points between the chains on both sides so that it is always maintained horizontally even at a reversing part. The interval (l) in the running direction can be varied and therefore a different type of pallet can be selectively used.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention conveys the pallet while keeping the posture of the pallet constant at all times on the forward trip, return trip, and reversal section without providing a guide for controlling the posture of the pallet. Regarding the pallet conveyor that can be used.

[Conventional technology and its problems]

In a conventional pallet conveyor, for example, rotating shafts protrude from both sides of the pallet in the width direction (direction orthogonal to the traveling direction) in a coaxial positional relationship. Additionally, there is one in which each rotating shaft is rotatably engaged with a pair of chain rows arranged in parallel. In this type of conveyor, when conveyed items loaded on a pallet and transported on the outgoing path are conveyed on the return path without being discharged after being reversed, it is necessary to prevent the transported items from falling on the pallet. In order to prevent this, it is necessary to provide a guide from the reversing section to the return path to control the attitude of the pallet after reversing.

However, in order to guide the pallet movement trajectory to a smooth curved motion and maintain a stable conveyance posture using a guide for controlling the posture of the pallet, not only strict accuracy is required when designing and installing the guide, but also the size However, there is a problem in that it becomes difficult to configure pallets of different types with different shapes to be replaceable. If it were to be made compatible between different types of pallets, not only would it be necessary to replace the guide and make fine adjustments to the installation position and condition each time pallets are replaced, but there is also a risk that maintenance would become complicated. Further, problems such as an increase in failures, an increase in cost, and an increase in size due to an increase in the number of parts cannot be avoided.

In addition, when the opposing sprockets of two rows of chains are supported on the same rotating shaft as in a conventional conveyor, the rotating shaft is located between the opposing sprockets. When the pallet passes through the reversing section, this rotating shaft is placed on the bucket S! There is a risk that it may become an obstacle to the passage of the conveyed object, and for this reason, the shape of the conveyed object (
In particular, restrictions were often placed on height. Also,
Due to similar circumstances, there were restrictions on the shape of the pallet itself that could be attached.

[Means and effects for solving the problem] The present invention has been made in view of the above, and does not require the provision of a guide for controlling the posture of the pallet (the posture of the pallet at the reversing section is always maintained constant). In order to make it possible to convey while moving, pallets are arranged at a predetermined interval on a conveying chain that is stretched endlessly, and the reversing section where the pallets are located between the forward and return paths is In a pallet conveyor that can maintain a predetermined posture even when passing, the conveying chain is a double-row chain consisting of a pair of chains running in parallel in synchronization, and the chains in one row are connected to the chains in the other row. The chain is shifted by a predetermined distance in the traveling direction, and one rotary support member is disposed on each side of the pallet in the width direction on a non-coaxial manner, and each of the rotary support members provides a pallet conveyor in which a pallet is rotatably engaged with each chain, and the interval in the advancing direction of each rotary support member is configured to match the displacement interval of each chain row.

〔Example〕

Hereinafter, the pallet conveyor of the present invention will be explained in detail.

FIG. 1 (() (El) and (C) are a front view, a plan view, and a side view showing the overall configuration of an embodiment of the present invention, in which this conveyor is rotatably supported by a machine frame 1. 1
sprockets 2a, 2b and a first sprocket 2a
, 2b, the first chain 3 and the second chain 11 are stretched endlessly and in parallel, respectively, by second sprockets 10a and 10b arranged at the same distance as the distance between the two sprockets 10a and 10b.
, a chain guide 20 that sets the traveling trajectory of the first and second chains 3, 11 on the outward path (upper running surface) in a predetermined manner; The arranged pallet 30 and the first and second chains 3, 1
A connecting rotating member 40a that connects the pallet 30 to 1
, 40b, and a motor (not shown) that rotationally drives the first and second sprockets 2a, 2b and 10a, 10b in synchronization. Reference numerals 4 and 12 indicate inverted portions of the chains 3 and 11, respectively.

The second sprockets 10a, 10b are arranged at a position a predetermined distance i closer to the direction of movement of the chains 3, 11 than the first sprockets 2a, 2b (the reverse may also be the case). FIG. 1(C) shows the configuration of one of the connecting rotating members 40a, and this connecting rotating member 40a rotatably connects a fixed part 41 fixed to the link of the chain 3, and the fixed part 41 and the pallet 30. It consists of a rotating part 42 that rotates. Reference numeral 43 denotes a metal fitting for fixing the fixing part 41 to the link of the chain. Each of the connecting rotating members 40a and 40b is disposed on both sides of each pallet 30 in the width direction.
0a and 40b are in a non-coaxial positional relationship, and the spacing between them (the spacing in the traveling direction) is set to match the spacing l in the traveling direction between the first and second sprockets.

Note that the rotation shafts 5a, 5b of the first sprockets 2a, 2b
and the rotation shaft 13 of the second sprocket lQa and 10b.
The setting positions of a and 13b can be changed, and both are configured so that they can be moved in the direction of movement of the chain.
The distance between the first and second sprockets in the advancing direction! can be set freely. Therefore, it is possible to replace it with a different type of barre/throat in which the installation interval of the connecting rotating members is different.

Note that the configuration of the connecting rotation members 4Qa and 40b shown in the drawings is merely an example, and any configuration other than this is applicable as long as it includes a fixed portion and a rotation portion.

Further, although the above embodiments show a conveyor that runs in a horizontal direction, it is naturally applicable to a conveyor that runs in an inclined direction or a vertical direction.

In the above configuration, the chains 3.11 running synchronously
When the pallet 30, which has been conveyed by
Two connected rotating members 40a.

Since each of the pallets 40b always moves along the same trajectory, it is possible to maintain the posture of the pallet in a horizontal state at all times.

Furthermore, according to the conveyor of the present invention, since the rotating shaft of the sprocket is not located between each chain, when the packet passes through the reversing section unlike in a conventional conveyor, it passes between the opposing sprockets. It is possible to solve the problem that the common rotation axis of the pallets becomes an obstacle to the passage of conveyed objects placed on the pallet. Therefore, restrictions on the shape (especially the height) of the conveyed object and the shape of the pallet can be largely eliminated.

〔Effect of the invention〕

As described above, according to the pallet conveyor of the present invention, the pallets are disposed at predetermined intervals on the conveying chain stretched in an endless manner, and the pallets are located between the outgoing path and the incoming path. In the pallet conveyor, which can maintain a predetermined posture even when passing through a section, the conveying chain is a double-row chain 7 consisting of an integral chain running in parallel in synchronization, and the chains in one row are The chain is shifted by a predetermined distance in the traveling direction with respect to the chains in the other row, and one rotary support member is disposed on each side of the pallet in the width direction on a non-coaxial basis. The rotary support member rotatably engages the pallet with each chain, and the interval in the advancing direction of each rotary support member is configured to match the displacement interval of each chain row, so the posture of the pallet can be controlled. (Do not provide a guide for
, it is possible to transport the packet while keeping its posture constant in the reversing section.

[Brief explanation of drawings]

Fig. 1 ((0) and (c) are a front view, a plan view, and a side view showing the configuration of an embodiment of the present invention. Explanation of symbols 1...Machine frame, 2a, 2b...No. 1 sprocket,
3... First chain, 4, 12... Reversing part, 5 a
, 5b, 13a, 13b-rotation shaft, 10a,
10b... Second sprocket, 11... Second chain, 30... Pallet, 40a, 40b... Connected rotating member, 41... Fixed part, 42... Rotating part. Patent applicant Shin Matsubara, agent for Yamakyu Chain Co., Ltd. Patent attorney Shin Matsubara 2 Seiji Muraki Jun Ueshima - Hiroaki Sakai

Claims (1)

[Claims] Even when pallets are arranged at predetermined intervals on a conveying chain stretched in an endless manner, and the pallets pass through a reversing section located between an outgoing path and a return path, , in a pallet conveyor that can continue to maintain a predetermined posture, the conveying chain is a double-row chain consisting of a pair of chains that run in parallel in synchronization, and the chains in one row are symmetrical with respect to the chains in the other row. The pallet is shifted in position by a predetermined distance in the traveling direction, and one rotational support member is disposed on each side of the pallet in the width direction on a non-coaxial basis, and each rotational support member is arranged with respect to each chain. 1. A pallet conveyor, wherein the pallets are rotatably engaged, and the intervals in the advancing direction of each rotary support member match the displacement intervals of each chain row.