JPS598604B2 - Palette Isourainkikou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pallet transfer system within the same linear assembly line, and a so-called hybrid system in which pallet transfer is freely switched to partially synchronous transfer or asynchronous transfer within the same linear assembly line. Main purpose is line system.

Normally, machinery and other products are manufactured in sequence on the same straight assembly line, and within that line there are sections where humans and machines work together to improve work efficiency. There is.

The assembly line of this human work section is a kind of rhythm b
3. Synchronous transfer of continuous objects is preferred because of the requirements, whereas asynchronous transfer is considered optimal because the working speed of machines is different from that of humans and the relationship between machines. In short, when objects are assembled by humans or machines on the same straight assembly line, a transfer speed b3 is required depending on each section, so one line becomes a hybrid line with partial synchronization and non-synchronization. That's why it happens.

In such a mixed line with partially different transfer speeds, for example, if conveyors are installed for each different speed section, objects will not be transferred smoothly, and the equipment that makes up the line will Overall b3 is a major loss and is mechanically unfavorable. This invention is a solution to the above-mentioned problems in the hybrid line.
To provide a smoothly operating hybrid line mechanism capable of freely switching the transfer of objects from high speed to low speed or from low speed to high speed on one assembly line, and also freely stopping the transfer of objects.

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

Now, as shown in Fig. 1, the transfer speed of objects in each section of the hybrid line is set to a low speed L between AB and CD, and a high speed H between BC, and the present invention is applied to this line. The case where this is applied will be explained below.

First, in the schematic diagram shown in Figure 2, 1 is a pallet on which the assembly etc. are placed, 2 is an endless guide rail that supports both sides of the pallet 1 so that it can slide freely, and 3 is an endless guide rail provided along the guide rail 2. A chain of 2 independent high speed and low speed
consisting of books, each of which is driven in the same direction along three guide rails 2. By meshing the pallet 1b5 with one side of the chain 3, the pallet 1 is stretched through the chain and slides (transfers) on the guide rail 2 at high or low speed. This is the basis of the present invention. Next, specific examples of each main part will be explained in order.
In the figure, rollers 4 are rotatably provided on both sides of the pallet 1, and these rollers slide within the guide rail 2, which has a U-shaped cross section, thereby transporting the pallet 1 along the guide rail 2.

Further, 3a is a high-speed chain, and 3b is a low-speed chain.These two chains are arranged in parallel below the center of the conveying pallet 1 and are driven. This is done using the levers 5a and 5b. That is, the lever 5a is disposed above the high-speed chain 3a, and the lever 5b is disposed above the low-speed chain 3b.The lever 5a is disposed above the high-speed chain 3a, and the lever 5b is disposed above the low-speed chain 3b. 7, it is constantly pressed toward the chain side. In addition, each chain 3a, 3 is attached to the rear lower surface of the levers 5a, 5b.
It has claws 8a, 8b shaped to mesh with the claws 8a, 8b.
The pallet 1 is connected to the chain 3 by biting into the chain 3 by the pressing force of the bullet 7. That is, by selectively engaging each lever 5a, 5b with each chain 3a, 3b, the pallet 1 can be selected to be moved at high speed or low speed. The B3-order cam mechanism that makes this selection consists of a high-speed side cam 9a and a low-speed side cam 9b. The cams 9a, 9b push up the levers 5a, 5b via push-up rollers 10a, 10b protruding from the rear portions of the levers 5a, 5b, and disengage the levers 5a, 5b from each chain 3a, 3b. and placed on both sides of chain 3. For example, according to FIG. 2, a low-speed cam 9b is provided next to the high-speed chain 3a between AB and CD, and the high-speed lever 5a in this section is removed from the high-speed chain 3a, and the low-speed lever 5a is removed from the high-speed chain 3a in this section.
Only chain b is engaged with low speed chain 3b. In this case, pallet 1 will be transferred at a low speed. Conversely, between BC, the high-speed cam 9a is provided beside the low-speed chain 3b, and the low-speed cam 9a is not provided. In short, each cam 9a, 9b is arranged so that if the pallet transfer is at a high speed, the low speed side lever 5b is removed, and if the pallet transfer is at a low speed, the high speed side lever 5a is removed. 9a
, 9b, both levers 5a, 5b can be connected to each chain 3a.
, 3b, the pallet 1 can also be stopped. Further, a clutch 11 is provided projecting from the rear part of the pallet 1 for removing the levers 5a and 5b of the succeeding pallet 1 from the chains 3a and 3b.

This clutch 11 has a tapered bottom surface, and uses this tapered surface to push down the tips of the levers 5a, 5b of the succeeding pallet 1'' to disengage it from the chain 3.In short, the clutch 11 is designed to disengage the levers 5a and 5b of the succeeding pallet 1'' from the chain 3. This is to stop the following pallet 1'' before it collides with the preceding pallet 1, regardless of the presence or absence of cams 9a and 9b.Next, to summarize the operation procedure according to the above purchase, between AB in Fig. 2, the low speed cam is used. Due to the presence of 9b, pallet 1 is transferred at low speed, changes to high speed transfer when it enters between BC, and then becomes low speed transfer again between CD.

To stop the pallet 1 at will during this time, the cam 9a,
In addition to the arrangement of levers 5a, 5b of pallet 1, each chain 3a,
This is easily possible by removing it from 3b. That is, high-speed/low-speed transfer and stopping of the pallet mouth can be arbitrarily combined. In addition, when the preceding pallet 1b3 is in a stopped state during work, if the succeeding pallet 1''B3 attempts to collide with it, the clutch 11 of the preceding pallet 1 moves the lever 5a of the succeeding pallet V.
, 5b are automatically removed from the chains 3a, 3b, the succeeding pallet 1'' is stopped on the spot.Then, if the preceding pallet 1 is transferred to the next process at a low speed for high-speed formation, the clutch 11 of the preceding pallet 1 is transferred to the succeeding process. Lever 5a of pallet 1'',
5b, the levers 5a and 5b of the succeeding pallet opening 1" engage with one of the chains 3a and 3b again, and the succeeding pallet 1" begins to move. In this way, pallet 1 can be transferred at high speed or low speed or stopped in the same straight line assembly line B3.
Pallet 1, which is operated at will and has completed its work last, returns from the ending point and returns to the starting point.

The returning pallet 1 still slides on the guide rail 2, but at this time, only the return area 3a'' of the high-speed chain 3a is actuated (engaged) with the lever 5a of the returning pallet 1'', as shown in FIG. Then, the pallet 12 may be returned at high speed. As explained above, the present invention includes a guide rail that supports a pallet in a movable manner, two high-speed and low-speed chains arranged in parallel along the guide rail, and a chain connected to the front part of the pallet in correspondence with each chain. A pair of levers that are swingably supported and have a claw and a push-up roller at their rear ends; a spring that keeps the claws at the rear end of each lever always in mesh with the chain; A clutch for pushing down the front end of the lever of the succeeding pallet to remove it from the chain, and a clutch placed along the pallet transfer line corresponding to the push-up roller of each lever and selectively engaging the chain corresponding to each speed range of the pallet transfer line. Since it is equipped with a plurality of cams for stopping the pallet, the pallet transfer is divided into high speed and low speed by selective engagement between the pallet lever and the chain, and by removing the lever from the chain, the pallet transfer is stopped and the subsequent pallet transfer is stopped. It is possible to automatically stop the succeeding pallet when a pallet collides with the preceding pallet and perform mixed pallet transfer.B3 It is possible to perform partial continuous transfer or asynchronous transfer within the same straight assembly line, and it is possible to perform complex mixed transfer. Line t)3 can be easily made and assembly work efficiency can be improved f:)j.

In addition, the pallet transfer speed can be varied using two chains and two
Since this is done by alternate engagement with the book lever, the entire machine purchase can be extremely simplified and not require a large scale, and the line B3 can be provided which is advantageous in terms of equipment.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a colinear assembly line, Fig. 2 is a schematic side view showing an embodiment of the entire mechanism of the present invention along the line of Fig. 1, Fig. 3 is a plan view of the main part of Fig. 2, and Fig. 4 The figure is Figure 2A-
FIG. 5 is a side sectional view of the main part taken along line A, and FIG. 5 is a side sectional view of the main part taken along line BB in FIG. 1... Pallet, 2... Guide rail, 3a... High speed chain, 3b... Low speed chain, 5a... (High speed side) Lever 5b
...... (low speed side) levers 9a, 9b...
Cam, 11...Clutch.

Claims (1)

[Claims] 1. A guide rail that supports the pallet in a movable manner; two high-speed and low-speed chains arranged in parallel along the guide rail; A pair of levers each having a claw and a push-up roller at the rear end, a spring that keeps the claws at the rear end of each lever in constant engagement with the chain, and a lever protruding from the rear of the pallet to push down the front end of the lever on the following pallet. A clutch for removing the pallet from the chain and a push-up roller for each lever are placed along the pallet transfer line.
A pallet transfer line mechanism comprising a plurality of cams for selectively engaging chains corresponding to each speed range of the pallet transfer line.