JP3099720B2 - Wire assembly production method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shared production method for wire assemblies.

[0002]

2. Description of the Related Art In general, a common production method is known as a method of producing a wire harness or a subassembly (hereinafter, collectively referred to as a "wire assembly") which is attached to a main body device such as an automobile or a copying machine. (For example, JP-A-1-283708). According to the method, when producing wire assemblies of a plurality of product numbers having different grades of the main unit, each part of the wire assembly to be manufactured can be shared between wire assemblies having different product numbers. And those that constitute a dedicated circuit unique to each wire assembly, assigning a common part number to parts related to the shared circuit, and assigning a dedicated part number to parts related to the dedicated circuit, After individually manufacturing the shared circuit and the dedicated circuit based on the given shared part number and dedicated part number, by selectively assembling the dedicated circuit on the shared circuit, a wire assembly with a different part number is produced,
Improving efficiency.

[0003] Here, when arranging the components of each circuit, it is common to automatically produce the electric wires with terminals, which are the main components, using a device called a cutting device (for example, see Japanese Patent Application Laid-Open No. Hei 7-134919). It is. In order to increase the production efficiency of this cutting device, it is necessary to increase the ratio of sharable terminal-equipped wires to the total number of terminal-equipped wires to be produced (hereinafter referred to as “shared rate”). For this reason, when the wire assembly is divided into a shared circuit and a dedicated circuit as described above, each circuit is designed so that the sharing rate of the terminal-equipped wires is increased. Then, the manufactured electric wire with terminals is assembled into a circuit corresponding to the assigned common part number or dedicated part number by being connected to the connector specified in advance, and then the dedicated circuit is selectively used as the shared circuit. Assembled to produce wire assemblies.

[0004]

In the above-described common production method, the same part number is assigned to each part from the arrangement to the assembly, consistently. For this reason, when arranging electric wires with terminals, which are the main components, the sharing rate is increased and production efficiency is increased, but when assembling electric wires with terminals and manufacturing circuits, they are assembled into the final wire assembly. Many terminals that have not been inserted into the connector (hereinafter, referred to as “loose terminals”) remain, and the ratio of terminals inserted into the connector to the total number of terminals (hereinafter, referred to as “first-in ratio”) decreases. As a result, misalignment is likely to occur in the process of assembling the manufactured circuit, causing a process failure.

In order to avoid such a problem, it is conceivable to sort the wire assemblies into shared / dedicated circuits so that the first-in-first-out ratio is high. However, in such a case, it is impossible to avoid a disadvantage that the sharing rate of the electric wires with terminals is reduced and the efficiency for arranging the electric wires with terminals is reduced. The present invention has been made in view of the above problems, and has as its object to provide a wire assembly common production method in which the first-in rate increases without reducing the common rate of the terminal-assembled wires of the wire assembly.

[0006]

According to a first aspect of the present invention, at least a wire with a terminal is selected when a plurality of parts constituting a wire assembly are selectively assembled. In the production method of sharing wire assemblies for manufacturing wire assemblies with different production numbers by changing the parts to be manufactured, it is possible to share each part of the wire assemblies to be manufactured between wire assemblies with different production numbers. A process of classifying the components into a shared circuit that can be formed and a component that constitutes a dedicated circuit unique to each wire assembly; and assigning a shared product number to the component related to the shared circuit, and assigning a dedicated product number to the component related to the dedicated circuit. Applying,
The process of arranging the parts related to the shared circuit and the parts related to the dedicated circuit based on the respective common part numbers and dedicated part numbers, and changing the part numbers of the arranged parts to the production part numbers of the wire assemblies corresponding to the parts. And a step of assembling parts arranged based on the changed production number to assemble a wire assembly having a different production number. .

According to the first aspect of the present invention, each part of the wire assembly to be manufactured constitutes a shared circuit that can be shared between wire assemblies of different production numbers and a dedicated circuit unique to each wire assembly. The circuit configuration of the wire assembly is classified into a shared circuit and a dedicated circuit so that the sharing ratio of each part is high, and the classification is based on the product number of each circuit. Each component constituting the circuit is arranged. At this time, the product numbers of the classified circuits are virtual, and are not manufactured alone.

Next, when the arranged parts are assembled, the part numbers of the arranged parts are changed to the production part numbers of the corresponding wire assemblies, and the parts are arranged based on the changed production part numbers. Since each component is assembled, a high first-in-first-out rate is maintained. As a result, when arranging the terminal-equipped electric wire, a high sharing rate is maintained, and at the time of assembling the terminal-equipped electric wire, the pre-emption rate is increased.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A preferred embodiment of the present invention will be described in detail. FIG. 1 is a schematic plan view showing a schematic configuration of a shared production system of a wire harness showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a schematic configuration of the shared production system of FIG.

First, referring to FIG. 1, a shared wire harness production system shown in FIG. 1 includes a production line L1 for producing a plurality of types of subassemblies SA (see FIG. 2).
And a gross assembly of the subassembly SA manufactured on the manufacturing line L1 to form a plurality of types of wire harnesses WH.
(See FIG. 2). An assembly line L2 for assembling (see FIG. 2) and a cutting device L3 for supplying the terminal-equipped electric wire W as a main component to the production line L1 are provided side by side. And a command unit L4 for outputting data for controlling the cutting pressure machine L3.

The production line L1 is divided into a plurality of areas 1 to 5 set in a line.
This is for manufacturing a sub-assembly SA of a production part number (type) assigned to each. Referring to FIG. 2, in each of areas 1 to 5, an electric wire container 11 for accommodating a plurality of types of electric wires W with terminals classified by type and accommodating a plurality of types of connectors CN by type. Connector housing 12
And a work table 13 for the worker P1 to connect the electric wire W with terminal and the connector CN are provided. The electric wire W with a terminal accommodated in the electric wire housing 11 and the connector CN accommodated in the connector housing 12 are:
It is arranged based on arrangement data output from a command unit L4 described later.

The work table 13 is further provided with a stopper 13A for stopping the connector CN so that the electric wire W with a terminal can be connected to the connector CN, and the conduction between the connector CN and the electric wire W with a terminal is inspected. Inspection device 13B and the like are arranged. Also, an assembly support device 14 is provided in each of the areas 1 to 5 so that the worker P1 can specify the type of the subassembly SA to be manufactured. The assembling support device 14 is disclosed in, for example, Japanese Patent Application No.
No. 09080, the display device 14A displays the type of product to the worker P1 based on the allocated manufacturing information, and the worker P1 displays the product type based on the displayed manufacturing information. And a discriminating device 14B for discriminating whether or not the device is manufactured.
Based on the display on the display device 14A, the wire W and the connector CN
And the subassembly SA can be easily manufactured. This manufacturing information is based on manufacturing data output from a command unit L4 described later. Further, if the worker P1 performs an erroneous operation, the discriminating device 14B detects this and notifies the worker P1, thereby preventing a manufacturing error of the worker P1.

FIG. 3 is a schematic diagram of the assembly support device 14 employed in the shared production system of the wire harness of FIG. As shown in this figure, the display device 14A of the assembly support device 14 is embodied by a liquid crystal display. The discriminating device 14B has a built-in microprocessor (not shown) that stores manufacturing information displayed on the display device 14A, and is connected to the microprocessor. It includes a detection unit (not shown) for detecting the pole.

Referring to FIGS. 1 and 2, the assembly line L2 is connected to a movable wiring board 21 on which the subassembly SA manufactured on the manufacturing line L1 is mounted so as to be able to circulate in a substantially endless manner. It is composed. The plurality of drawing boards 21
It is looped in the loop direction D by the endless conveyor 22 extending in one longitudinal direction parallel to the above-mentioned production line L1. The assembly line L2 includes a plurality of work areas E1, E2,
... Section E10. Although not specifically shown, a container for external parts necessary for assembling the wire harness WH is provided at an appropriate position in each of the work areas E1 to E10 of the conveyor 22.
Performs the necessary assembling work in appropriate places in the work areas E1 to E10. Work areas E1 to E
Among 10, the areas E1 to E5 are arranged at positions facing the areas 1 to 5 of the production line L1, and are arranged in this order from the upstream in the traveling direction D. Thereby, the production line L
1 can supply the manufactured subassembly SA to the drawing board 21 in the corresponding areas E1 to E5. The remaining areas E6 to E10 are arranged on the opposite sides of the areas E1 to E5, and are arranged in this order from the upstream in the traveling direction D. Then, in the final area E10, the completed product is taken out.
In the assembly line L2, the areas E6 to E1
The worker P2 performs the assembling work for every 0. In the final area E10, after the worker P2 completes a part of the assembling work, the work is assigned so that the worker P2 transfers the completed wire harness WH to a stock trolley (not shown) or the like. .

Referring to FIG. 1, the cutting device L3 measures and cuts a long insulated wire to a predetermined length, and crimps terminal fittings to both ends of the cut insulated wire. It is a well-known thing which continuously and automatically produces the electric wire W with a terminal.
The control device L31 of the cutting device L3 is configured to receive arrangement data output from a command unit L4 described below. The cutting device L3 has a predetermined terminal based on the arrangement data. The set number of electric wires W is manufactured.

Next, the command unit L4 includes a computer L41, a display L42 and a floppy disk drive L43 connected to the computer L41. FIG. 4 is a block diagram showing processing of the command unit L4 in FIG. Referring to FIG.
The computer L41 includes a management data creation program PG1 for creating management data D1 of the wire harness WH to be manufactured by the system illustrated in FIGS. 1 and 2, and CAD data based on the created management data D1. A CAD data creation program PG2 for creating D2 and an order data creation program P for creating order data D3 based on the created CAD data D2.
G3 and the manufacturing data D based on the CAD data D2.
4 is stored. The management data creation program PG1 receives the order data D11 of the received wire harness, the order data creation program PG2 the order factor data D12, and the production data creation program PG3 the production factor data D13.
Are respectively processed. These order data D11, order factor data D12, and manufacturing factor data D13 are read from a floppy disk L44 as an external storage medium via a floppy disk drive L43 connected to the computer L41.

Next, a specific example of shared production using the production system described above will be described in detail. FIG. 5 is an explanatory diagram showing a configuration of data processed by the command unit L4 of FIG. 1, and FIG. 6 is a wire harness WH manufactured in a shared manner.
(A) shows an example of the subassembly SA of FIG.
Is a configuration example of the subassembly SA, and (B) is a configuration example of the same type of subassembly SA different in grade from the subassembly SA of (A).

Referring first to FIGS. 1, 5, and 6,
The order data D11 input to the floppy disk L44 is composed of two types of wire harnesses WH (the delivery part numbers are S24012 67U70 and S24012 67, respectively).
Assume that 50 units and 30 units of U71) are manufactured, respectively. When the management data creation program PG1 of the computer L41 is started and the order data D11 is read into the computer L41, the management data D1 is created from the read order data D11 and stored in a storage medium (not shown). The order data D11 is stored in the circuit configuration (S) of the subassembly SA of each wire harness WH.
The production part numbers of the subassemblies SA of 24012 67U70 are X1, X2, X3,.
The production product number of the subassembly SA of 0 is Y1, Y2, Y
3,...), Delivery date, production schedule, and the like. This circuit configuration is divided for each system of a main body device (for example, an automobile), for example, production part numbers X1 and Y1 are engine room harnesses, production part numbers X2 and Y2 are lighting harnesses, and so on.

Next, when the CAD data creation program PG2 of the computer L41 is started, the components constituting the shared circuit C1 and the components constituting the dedicated circuits S1 and S2 are obtained from the management data D1 for each subassembly SA. (For example, in the case of a sub-assembly SA whose production part number is X1 or Y1, the common part number assigned to each part of the common circuit C1 is C12041USA-Z, The dedicated part number given to each component of the dedicated circuit S1 is C02FBR, and the dedicated circuit S2
The exclusive part number given to each part is A03FW).

When the wire harness WH is sorted into the sub-assemblies SA when the management data D1 is created, in order to reduce the types of the sub-assemblies SA and to improve the production efficiency, a plurality of types having different delivery part numbers are required. The wire harness WH is classified into a sharable one and a unique one. For the same reason, when the CAD data D2 is created, when the subassemblies SA are sorted into the shared circuit C1 and the dedicated circuits S1 and S2, the sharing rate of the terminal-equipped wires W manufactured by the cutting-off machine L3 is used. The components of the circuits C1, S1, and S2 are classified so that the values of the components are higher.

As shown in FIGS. 6A and 6B, when the sub-assembly SA having the product number X1 and the sub-assembly SA having the product number Y1 are manufactured in common, the connector CN1 having the product number M04FW and the connector having the product number S10FL are provided. Since they are common with CN2, they are connected to one shared circuit C1.
(Common part number is preferably C12041USA-Z). Then, the remaining connectors CN3 and CN
4 (the product numbers are C02FBR and A03FW, respectively) are determined to constitute the dedicated circuits S1 and S2, respectively. The CAD data D2 thus created is stored in a storage medium (not shown) in the same manner as the management data D1.

Next, the production data creation program PG3 of the computer L41 is started, and the arrangement factor data D12
When the CAD data D2 is read together, the arrangement data D3 for each component such as the electric wire with terminal W and the connector CN to be manufactured from the CAD data D2 is created. The contents of the arrangement factor data D12 include the number of parts corresponding to each circuit C1, S1, S2 for each of the product numbers X1, X2,..., Y1, Y2,. Each circuit C corresponding to these numbers
The number of each component is determined by multiplying the number of 1, S1, and S2 for each component. Thus, the order data D3
Is prepared, and the arrangement data D3 is provided to the cutting device L3 via communication means or a storage medium. And the cutting pressure machine L3 manufactures the electric wire W with a terminal based on the provided arrangement data D3. Further, a connector CN based on the arrangement data D3 is procured.

Here, in the conventional production method, the formed arrangement data D3 is transmitted to the production line L1 as it is,
Each circuit C1, S1, S2 was manufactured. For this reason, among the manufactured circuits C1, S1, S2, the dedicated circuit S
As for 1, S2, a plurality of loose terminals are left until the assembly is performed on the assembly line L2, and the first-in-time ratio is low. On the other hand, in the above-described embodiment of the present invention, the circuits C1, S1, and S2 sorted for arranging the electric wires W with terminals are, so to speak, virtual, and are not manufactured alone. Instead, by changing the part numbers of the arranged parts to the production part numbers X1 and Y1 of the subassembly SA corresponding to each part, it is possible to manufacture a circuit (subassembly) with a high first-in rate. is there.

That is, when the manufacturing data creation program PG4 of the computer L41 is started and the manufacturing factor data D13 is input together with the CAD data D2, among the 80 parts to which the part number of the shared circuit C1 is assigned, For 50 units, the production part number X1 of the subassembly SA related to the dedicated circuit S1, and for the other 30 units, the production part number Y1 of the subassembly SA related to the dedicated circuit S2.
Is assigned as a new product number together with the corresponding dedicated circuits S1 and S2, and is assigned to the respective areas E1 and E2 of the production line L1. And each area E1, E
2, the circuits related to the production numbers X1 and Y1 having a high first-in rate are manufactured, and are gross-assembled with other subassemblies SA (X2, X3,... Or Y2, Y3,. A simple wire harness WH is produced.

Such a production method will be more easily understood by using the concept of a matrix. FIG.
In the CAD data D2 shown in (1), when parts arrangement and assembly are performed for each column, the sharing ratio of the electric wire with terminal W increases, but the number of loose terminals of the dedicated circuit increases, and the first-in ratio decreases. . On the other hand, when parts are arranged and assembled for each row, the pre-emption rate is improved, but it is necessary to arrange the electric wires with terminals of the shared circuit twice, so that the sharing rate decreases. Therefore, when arranging the electric wires W with terminals, the operations are performed in units of columns, and when assembling the electric wires W with terminals (in the manufacture of the sub-assembly SA), the operations are performed in units of rows, so that the pre-emption rate is reduced without reducing the sharing rate. The rate is being improved.

As described above, in the above configuration,
For the same part, the product number (each circuit C1, S1, S2) given at the time of sorting is converted to the production part number (X1, Y
By changing to 1), when arranging the electric wire W with a terminal, a high sharing rate is maintained, and at the time of assembling the electric wire W with a terminal, the first-in rate becomes high. As a result, there is a remarkable effect that an assembling process with less misalignment can be performed without lowering the production efficiency of the terminal-equipped wire W.

The above embodiment is merely an example of a preferred specific example of the present invention, and the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the present invention is applied when manufacturing a subassembly having a different product number, but the present invention can be similarly applied to a case where a wire harness having a different product number is manufactured. Others
It goes without saying that various modifications are possible within the scope of the claims of the present invention.

[0028]

As described above, according to the first aspect of the present invention,
In the configuration described, by changing the part number given to the same part at the time of sorting to the production part number at the time of assembly,
A high sharing ratio is maintained when arranging each part, and a first-in-first-out ratio increases when assembling each part.Therefore, it is possible to perform an assembly process with less misalignment without lowering the production efficiency of each part. It has a remarkable effect that it can be done.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a schematic configuration of a shared production system of a wire harness according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a schematic configuration of the shared production system of FIG. 1;

FIG. 3 is a schematic diagram of an assembly support device employed in the shared production system of the wire harness of FIG. 1;

FIG. 4 is a block diagram illustrating processing of a command unit L4 in FIG. 1;

FIG. 5 is an explanatory diagram showing a configuration of data processed by a command unit L4 of FIG. 1;

6A and 6B show an example of a subassembly of a wire harness produced in common use, wherein FIG. 6A is a configuration example of the subassembly, and FIG. 6B is a subassembly of the same type having a different grade from the subassembly of FIG. It is an example of a structure of an assembly.

[Explanation of symbols]

 L1 Production line L2 Assembly line L3 Cut-off machine L4 Command unit SA Subassembly C1 Shared circuit S1 Dedicated circuit S2 Dedicated circuit CN Connector (part) W Wire with terminal (part)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-180554 (JP, A) JP-A-6-223646 (JP, A) JP-A-7-61533 (JP, A) JP-A-61-1986 173412 (JP, A) JP-A-61-80713 (JP, A) JP-A-6-96630 (JP, A) JP-A-9-107197 (JP, A) Patent 2929839 (JP, B2) Patent 2929838 (JP) , B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 43/00-43/20 H01B ^7/ 00-7/02

Claims (1)

(57) [Claims] When a plurality of parts constituting a wire assembly are selectively assembled, at least an electric wire with a terminal is changed as a selected part, so that a wire assembly for manufacturing a wire assembly having a different product number is shared. In the production method, each of the parts of the wire assembly to be manufactured is configured as a shared circuit that can be shared between wire assemblies of different production numbers, and configured as a dedicated circuit unique to each wire assembly. The step of classifying, the step of assigning a common part number to a part relating to the shared circuit, and the step of assigning a dedicated part number to the part relating to the dedicated circuit. And the process of arranging based on the special part number, and the part number of each arranged part corresponds to each part A step of assembling wire assemblies having different production part numbers by assembling the parts arranged based on the changed production part number. Assembly production method.