JPS63180620A - Assembly conveyer device - Google Patents

Abstract

PURPOSE:To eliminate a useless space so as to reduce the cost of pallets by forming a pallet transfer path adapted to be threedimensionally closed, with the use of first to fourth transfer means and first to third elevating means. CONSTITUTION:Each of an upper stage conveyer and a lower stage conveyer is composed of three conveyers (M5, M6, M7), (M8, M9, M10). Further, the upper conveyer M6 and the lower conveyer M9 are combined with lifters L4, L5 so as to form a circulating path for a conveying third pallet C. That is, an assembled part on the pallet C is assembled with an assembled part on a pallet A, on the conveyer M6, and then the emptied pallet C having been unnecessary is lowered by the lifter L5. Further, The pallet C and the pallet A are alternately fed onto the conveyer M9, and are elevated by the next lifter L4 so as be fed onto the conveyers M6. Thus, it is possible to eliminate a useless space and to eliminate the necessity of a large pallet incurring a high cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a free-flow assembly conveyor device applied to a pallet-type assembly line.

[Prior Art] Conventionally, the conveyor device shown in FIG. 9 or 10 is often used as an assembly conveyor device for assembling two assemblies into one in a pallet-type assembly line. ing.

That is, the conveyor device shown in FIG. 9 has two conveyors M and M', each equipped with a lid L with a conveyor (elevating transfer device) arranged in a cross-like manner, and a pallet A of the conveyor M and a pallet A of the conveyor M Components are assembled on pallet B of ', and the assembly of pallet A is assembled to the assembly of pallet B on conveyor M' to produce the parts.

The conveyor device shown in Fig. 10 uses large pallets for pallets A and B on one conveyor M, and after assembling parts on pallets A and B, pallet A
The assembly is produced by assembling the assembly of pallet B into the assembly of pallet B.

[Problems to be Solved by the Invention] The assembled conveyor device shown in FIG. There are drawbacks such as the need for four glue lids.

On the other hand, the assembly conveyor device shown in FIG. 10 not only wastes space because the conveyor is long, but also requires a large pallet, which has the disadvantage of increasing the cost of the pallet.

[Means for Solving the Problems] The assembly conveyor device according to the present invention includes a first transport means for transporting a first pallet and a second pallet of at least two types of pallets in one horizontal direction. and a second transport means for further transporting the first pallet transported by the first transport means in the same direction as above;
a first elevating means for selectively transporting the second pallet transported by the transport means downward or upward; and a first lifting means for transporting the first pallet transported by the second transport means downward or upward. a second lifting means; a third transporting means for transporting the first pallet transported by the second lifting means in the other direction in the horizontal direction opposite to the above; and a third transporting means for transporting the first pallet by the first lifting means; the second pallet and the third pallet
A fourth transport means transports the first pallet transported by the transport means in the same direction as above, and a fourth transport means transports the first pallet and the second pallet transported by the fourth transport means upward. Alternatively, the above-mentioned problem can be solved by comprising a third elevating means for transferring the material downward and feeding it into the first transferring means.

[Operation] In the assembly conveyor device, the first to fourth transfer means and the first to third elevating means form a pallet transfer path that is closed in three-dimensional form, so that assembly of parts and After assembly and removal of products, unnecessary pallets are returned in an orderly manner.

[Embodiment of the invention] Figures 1 to 4 show an embodiment of the present invention.
Ml is a chain conveyor forming the first transfer path, M
2 is a chain conveyor forming a second transfer path, M;
is a chain conveyor forming the third transfer path, M4 is a chain conveyor forming the fourth transfer path, and conveyors M, , M.

are arranged horizontally in series on the upper stage, and conveyors M, , M
4 are arranged in series in the horizontal direction on the lower stage, and conveyors M,...
A glue lid L is arranged as a first lifting means between M4 and the conveyors M, , M3, a glue lid L2 is arranged as a second lifting means at the end of the conveyor M, , M, and the conveyor M11M4 A glue lid L is disposed at the end of the lid as a third elevating means.

The lifter L1. As shown in FIG. 4, L, , L3 have a lifting platform 4 equipped with a chain conveyor 3 slidably mounted on a vertical rail 2 provided on a frame 1 having a required height. Both ends of a chain 7, which is passed around wheels 5 and 6, are tied to this elevating table 4, and one wheel 5 is connected to a motor 8.

After two types of pallets are passed through the assembly conveyor device and parts are assembled on each pallet, the pallets are transferred in the following order in the work of assembling one assembly to the other.

(1) The two types of pallets A and B, which have been returned to the lower conveyor M4 and are waiting, are taken out onto the upper conveyor interval 1 by the lifter L3.

(2) In the travel zone m of the conveyor M1, parts are assembled on pallets A and B, respectively, and in the travel zone m', the assembled parts on pallet B are assembled to the assembled parts on pallet A.

(3) Next, the pallet A carrying parts for one assembly is sent to the next conveyor M2 by the lifter L1, while the empty pallet B, which is no longer needed, is lowered and transferred to the lower conveyor M.
4 will be returned.

(4) In the upper conveyor M2, pallet A
For assembly, take the product outside and place it on the empty pallet A.
is lowered by the lifter L2, and the lower conveyor M,
will be returned to.

(5) The pallets A on the conveyor M are fed into the conveyor M4 alternately with the pallets B by the lifter L□.

In the above pallet transfer process, the lifter L,
The drive motor (not shown) of the conveyor 3 of L stops when a pallet is placed on the conveyor 3, is not driven during lifting and lowering, and is reversed when the lifting is completed. Lifter L
After the conveyor at the factory sends pallet A to conveyor M2 at the rising point.

After the drive motor (not shown) has stopped and lowered, the drive motor is reversed.

Lifter L, L2. A feed-out limiting mechanism as shown in FIG. 5 is provided at the end of the conveyor that feeds the pallet to L3, and feeds the pallet.

The illustrated example shows a feed-out limiting mechanism provided on the conveyor M3 that feeds pallets to the lifter L□.

9 is a swinging lever, 1o is a support shaft that is the center of swing, 11
, 12 and 13 are stopping protrusions provided on the lever, and 14 is a return spring. When the lifting platform 4 of the lifter L0 reaches the lowering position, the lever 9 is moved so that its protrusion 11 lifts and lowers as shown in the figure. It swings by being pushed by the platform 4, and the protrusion 13 protrudes behind the first pallet A to stop the next pallet A, and only the first pallet is moved to the elevator platform 4 by the conveyor M3. from there to conveyor M.
, and when the platform is raised, the lever 9 is swung in the opposite direction by the spring 14, and the protrusion 12 protrudes to stop the pallet following.

What is shown in FIG. 6 is an embodiment in which pallets A and B are sent out as a set by a feeding restriction mechanism.

What is shown in Fig. 7 is three types of pallets A.

This is an example of an assembly conveyor device that transports B and C using a conveyor and assembles the parts.

In this embodiment, the above-mentioned upper conveyor M2 and lower conveyor M each have three conveyors (M5=M
@ = M? ) = (M#2M5=Mx.), consisting of an upper conveyor M6 and a lower conveyor M.

Toni lifter L4. L, are combined, and this is used as a circulation path for transporting the third pallet C.

That is, after assembling the assembly of pallet C to the assembly of pallet A on the conveyor MG, the empty pallet C that is no longer needed is lowered by the lifter L, and sent to the conveyor M3 alternately with the pallet A. It is raised by the next lid L4 and sent to the conveyor M6.

In the various embodiments described above, automatic operations are performed to raise and lower pallets that are no longer needed due to assembly of an assembly and return them to the conveyor, and to return two types of pallets in the correct order when returning them. Since this can be easily achieved using conventionally well-known technical means, the explanation thereof will be omitted.

[Effects of the Invention] The assembly conveyor device of the present invention allows parts to be assembled by flowing two or more types of assembly pallets on a single conveyor line, and allows unnecessary pallets to be transferred to the return conveyor. Since it is configured to be returned and circulated, there is no wasted space in terms of layout and space, and there is no need for large pallets that would increase costs.

In addition, the present invention has the advantage that it can be applied to an automatic assembly line and is easy to automate.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an assembly conveyor device showing an embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is an enlarged side view of the device, Fig. 4 is an enlarged side view of the beam lid, Fig. 5 Fig. 6 is an enlarged side view of the pallet feed-out restriction mechanism, Fig. 6 is a side view of the main parts showing a state in which pallets are fed into the lifter as a set, Fig. 7
FIG. 8 is a plan view of an assembled conveyor device showing another embodiment.
The figure is a side view, and FIGS. 9 and 10 are plan views of a conventional assembly conveyor device, respectively. M1~M,... Conveyor, L, ~L,... Lifter, A, B, C... Pallet, 1... Lifter frame, 2... Rail, 3... Conveyor, 4... Elevating platform, 5.6... Wheel, 7... Chain, 8... Motor, 9... Rocking lever, 10... Support shaft, 11-13... For stopping protrusion. 14...Return spring.

Claims (2)

[Claims] (1) a first transport means for transporting a first pallet and a second pallet of at least two types of pallets in one direction in the horizontal direction; and a first transport means transported by the first transport means; a second transport means for further transporting the pallet in the same direction as above; a first elevating means for selectively transporting the second pallet transported by the first transport means downward or upward; a second elevating means for moving the first pallet transferred by the second elevating means downward or upward; and a second elevating means for moving the first pallet transferred by the second elevating means in the opposite horizontal direction. a third transport means for transporting the second pallet to be transported by the first elevating means and a first pallet to be transported by the third transport means to the same other direction as described above; a fourth transport means for transporting; and a third lift for transporting the first pallet and second pallet transported by the fourth transport means upward or downward and feeding them into the first transport means. An assembly conveyor device comprising: means; (2) The second transfer means and the third transfer means each include three transfer means sections, the second transfer means section of the second transfer means and the third transfer means section of the third transfer means. 2. The assembly conveyor device according to claim 1, wherein the fourth lifting means and the fifth lifting means are combined to form a circulation path for transporting the third pallet.