JPH01222829A - Method for assembling different type of workpiece - Google Patents

Abstract

PURPOSE:To prevent erroneous assembling and omit equipment reducing the floor area of a factory by making a plurality of workpieces for which assembling parts are mutually different flow on one conveying conveyor and assembling proper assembling parts corresponding to each workpieces. CONSTITUTION:Three types of cylinder blocks 11a, 11b, 11c on which different bar codes 13a-13c for each type of the blocks are attached are conveyed by one conveying conveyor 12. On the other hand, a plural types of assembling parts corresponding to the types of cylinder blocks 11a-11c, i.e., bolts 19a-19c, 20a-20c for clamping the cylinder blocks 11a-11c and heads 14a-14c together are kept standby on the side of the conveyor 12. The types of the cylinder blocks 11a-11c being conveyed on the conveyor 12 are judged based on the bar codes 13a-13c. Then, the assembling parts to be assembled to each cylinder in accordance with the type of the judged cylinder 11a-11c are taken out of the standby position and assembled.

Description

[Detailed Description of the Invention] <Industrial Application> The present invention conveys a plurality of types of workpieces with different assembly parts on a single conveyor, and selects appropriate assembly parts corresponding to these workpieces. The present invention relates to a method for assembling different types of workpieces, in which different types of workpieces are assembled to each workpiece.

<Conventional technology> When producing a wide variety of small-volume products in a single factory, in order to reduce equipment costs, it is necessary to share equipment as much as possible and unify the production line for rationalization.

For example, a gasoline engine and a diesel engine with substantially the same displacement can share a cylinder block, although their cylinder heads are different. Furthermore, even in gasoline engines, the OHC and DOHC types of supply and exhaust valves can share the same cylinder block, although the cylinders and cylinders are different. Therefore, if the displacements are almost the same, it is important to unify the production lines for diesel engines, OHC gasoline engines, and DOHC gasoline engines, starting with the process of assembling the cylinder head to the cylinder block. It may be advantageous in this respect.

Conventionally, production lines for such engines have been provided independently depending on the type of engine, and engines have been produced on each production line.

<Problem to be solved by the invention> In conventional automobile engine production lines, the number of engines produced is controlled for each production line, so it is difficult to control the number of engines produced on each production line. There is a problem of reduced operating efficiency. In addition, because the production lines are separate depending on the type of engine, a large floor space is required in the factory, and multiple identical production facilities must be installed depending on the type of engine, which reduces capital investment. becomes really large.

Means for Solving the Problems> The method for assembling different types of workpieces according to the present invention involves attaching different labels to a plurality of types of workpieces and conveying them by a single conveyor; A plurality of types of assembly parts corresponding to the types of the workpieces are kept waiting on the side, and the type 11 workpieces conveyed on the conveyor are identified based on their marks, and the identified The present invention is characterized in that, depending on the type of work, the parts to be assembled on the work are taken out from their standby positions and assembled on the work on the conveyor.

Function> The type of the workpiece is determined based on the mark attached to the workpiece at the discrimination position set on the conveyor, and the assembled part is carried out from the waiting area of the assembled part corresponding to the workpiece of Party B, and the workpiece is The parts to be assembled are assembled to the workpiece when the assembly position set on the transport conveyor is reached.

Embodiment As shown in FIG. 1, which shows the control concept of an embodiment in which the method for assembling different types of workpieces according to the present invention is applied to an automobile engine production line, in this embodiment, three types of cylinder blocks l1m are used.

11b and llc are placed as workpieces on the conveyor 12 at regular intervals, and are conveyed from the right side to the left side in the figure. The cylinder blocks lla to lie are sequentially supplied onto the conveyor 12 according to their production plan, but in this embodiment, depending on the beginning, the bar code 1 is
3a, 13b, and 13c are attached to each cylinder block lla to lie in advance. As described above, in this embodiment, for the purpose 7 of determining the types of cylinder blocks lla to llc, barcodes 13a to 13c corresponding to the types of cylinder blocks lla to llc are attached as markers to these cylinder blocks lla to llc. However, the cylinder block lla can be secured with magnetic tape or stamps.
It may be possible to display the type of each cylinder block lla to llc (in other words, a sign that allows one to objectively judge the type of each cylinder block lla to llc by some means)
It is sufficient if it is attached to a to llc.

Three types of cylinder head assemblies 14a correspond to each cylinder block lla to llc.

At the conveyance ends of the three stock conveyors 15a, 15b, and 15c, into which the stock conveyors 14b and 14c are fed, respectively, there are gates 16g that can be opened and closed.

16b and 16c are provided. Between the transfer conveyor 12 and the transfer conveyor 17 connected to the stock conveyors 15a to 15c via these gates 16a to 16c, cylinder head assemblies 14a to 14c on the transfer conveyor 17 are connected to cylinder blocks on the transfer conveyor 12. A transfer device 18 for transferring to lla to 11c is provided. This transfer device 18 includes cylinder head assemblies 14a to 14c sent to the transfer end of the transfer conveyor 17.
The cylinder block 1 is picked up and transferred onto the cylinder blocks a to lla that have reached the assembly position of the conveyor 12, but since this is a handling device that combines conventionally well-known mechanisms, the detailed structure will be omitted.

In this embodiment, bolts 19a and 19b are used to fasten the cylinder blocks lla to 11c and the cylinder head assemblies 14a to 14c.

19 c, 20 a, 20 b, and 20 c, respectively, are arranged on the side of the conveyor 12 on the downstream side of the transfer device 18. As shown in FIG. 2, which represents the outside 114 of this parts storage shelf 21, each bolt 19a to 19a is attached to the front end of the parts storage shelf 21.
, an indicator light 22 that can blink corresponding to 20a to 20a.
a, 22 b.

22c, 23m, 23b, and 23a are provided. Further, on the side of the conveyor 12 on the upstream side of the transfer device 18, there are cylinder blocks 11a to 11c.
A barcode reader 25 is provided that reads barcodes 13a to 13c affixed to the barcodes 13a to 13c and outputs them to the information processing device 24.

Then, the information processing device 24 reads the cylinder block lla based on the detection signal from the barcode reader 25.
Cylinder head assembly 14a corresponding to ~11c~
The gates 16a to 16c of the stock conveyors 15a to 15c containing the cylinder heads 14a are opened, and the cylinder head assemblies 14a to 14c are sent onto the transfer conveyor 17, and the bolts corresponding to the read cylinder blocks lla to 11c are Indicator lights 22a to 22c for stored locations
.

23a to 23c are to be turned on. In this case, the transfer device 18 performs a transfer operation when the cylinder blocks lla to llc read by the barcode reading consent 20 reach each assembly position on the conveyor 12, and the indicator light 22
A delay mechanism (not shown) corresponding to the conveyance speed of the conveyor 12 is provided so that a to 22c and 23a to 23c are lit.

Therefore, the cylinder head assemblies 14a to 14c are automatically transferred to each cylinder block lla to llc, so that the operator can turn on the indicator lights 22a to 22c, 23a to 23a.
Remove the bolt 19a from the parts storage shelf 21 where is lit.
~19c, 20a~20c are taken out and the cylinder block ll on the conveyor 12 has reached the assembly position.
a to 11C and cylinder head assemblies 14a to 14
These bolts 19a to 19c and 20a to 20c may be assembled to c.

For this reason, cylinder head assemblies 14a to 14C and bolts 19 are attached to cylinder blocks lla to 11C.
Accidents such as making mistakes in a to l9c and 20a to 20c+ do not occur, and there is no possibility that the line will stop due to this.

In addition, in this example, the types of engines and the types of assembly parts are set to three, but they can be increased or decreased as needed, and even in this case, the assembly parts to be assembled are displayed. Since the light can be turned on reliably, no inconvenience will occur. In addition, the gates 16a to 16c and the transfer conveyor 1
7 is replaced with one having a structure similar to that of the transfer device 18, and a predetermined cylinder head assembly 14a to 14c is picked up from the main stock conveyor 15a to 15c, and
Between the transfer device 18 and the cylinder head assembly 14a~
It is also possible to arrange for the receiving of 14c to be a handing over.

Further, in this embodiment, an automobile cylinder block was used as the workpiece, but it is obvious that the present invention can be applied to any other machinery.

<Effects of the Invention> According to the method for assembling different types of workpieces of the present invention, even if multiple types of workpieces are conveyed on one conveyor, the type of workpieces can be determined based on the marks attached to these workpieces, and the Since the parts to be assembled are automatically carried out from the standby area and transferred to the workpiece, there is no risk of the worker incorrectly assembling the parts to the workpiece. It is possible to omit equipment and reduce factory floor space.

[Brief explanation of the drawing]

Fig. 1 is a conceptual diagram of an embodiment in which the method of assembling different types of workpieces according to the present invention is applied to an automobile engine assembly line;
The figure is a perspective view of the parts storage shelf. Also, in the figures, lla to llc are cylinder blocks,
12 is a conveyor, 13a to 13c are bar codes, 1
48-14c are cylinder head assemblies, 156-1
5c is the stock conveyor, 16a to 16c are the gates, 1
7 is a transfer conveyor, 18 is a transfer device, 19a to 19c
, 20 a to 20c are bolts, 21 is a parts storage shelf, 2
2a to 22c and 23a to 23c are indicator lights, 24 is an information processing device, and 25 is a barcode reader.

Claims (1)

[Claims] Multiple types of workpieces are conveyed by a single conveyor with different labels attached to each type, while multiple types of assembly parts corresponding to the types of workpieces are waiting on the side of the conveyor. The type of the work being conveyed on the conveyor is determined based on the mark, and the assembly parts to be assembled on the work are determined according to the determined type of the work. A method for assembling different types of workpieces, characterized in that the workpieces are taken out from a standby position and assembled onto the workpieces on the conveyor.