JPH0656725B2 - Wire harness transfer method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a wire harness for an automobile, and more particularly to a method for transferring a wire harness between processes.

[Prior Art] Many electric wires are used for power supply and distribution of various control devices and lighting devices in automobiles. The electrical components of this automobile are increasing due to the recent rapid shift to high-grade equipment and ectronics, and along with this, the number of circuits in the wire harness is increasing.

As the manufacturing process of the conventional wire harness, it is necessary to transfer the drawing plates for assembling / processing etc. according to the progress of the manufacturing process. The positional relationship of each part of the wire harness is impaired in each process, and therefore, the wiring work is manually performed in each process to reproduce the positional relationship of the terminal part of the wire harness.

[Problems to be Solved by the Invention] However, in such a conventional manual wiring work, the wiring work itself, the number of terminal portions of the wire harness are large, and the wiring position is complicated. However, work requires skill, and it is difficult for a newcomer, and even an expert may make a mistake in work. In addition, there is a problem in that, during wiring work, parts or electric wires constituting the wire harness may be damaged due to being caught or hitting each other.

The present invention has been made in view of such conventional problems, and an object thereof is to solve the above problems by making a series of steps from the initial wiring of the wire harness to the finished product. There is.

[Means for Solving the Problems] The present invention relates to a holding position set in accordance with the shape of a primary assembly of the wire harness when transferring a wire harness for an automobile, and a plurality of gripping tools corresponding to the holding position, A moving plate for fixing the gripping tool, holding the primary assembly by closing the gripping tool, transferring it to a work place of the secondary assembly, and dropping the primary assembly by opening the gripping tool; That is what I did.

That is, a secondary assembly drawing board for the next process having the same wiring positional relationship as the wiring position indicated by the position display jig on the primary assembly drawing board of the wire harness is prepared. Each bending point and terminal portion of the primary assembly of the wire harness for an automobile laid on this drawing board is used as a holding portion, and a gripping tool corresponding to each of the holding portions can be brought close to the drawing board. The wire harness is provided on the moving plate, and when the moving plate approaches the drawing plate, the holding portion is held by the gripping tool, and then the moving plate is moved onto the drawing plate to be used for secondary assembly. In this method, the primary assembly is transferred to the drawing board to be used for the secondary assembly while the shape of the drawing board is maintained.

The movable plate holds a predetermined portion with a gripping tool (such as a robot hand) so that the wire harness, which has been subjected to the primary assembly process on the primary assembly drawing plate, does not damage the positional relationship of the respective parts. Then, it is transferred to the secondary assembly drawing board of the next process having the same positional relationship as the position on the primary assembly drawing board, and the gripping tools are simultaneously opened to allow free fall or cure on the secondary assembly drawing board. It has a mechanism to install the wire harness by making the tool catch. The holding jig is provided on the drawing board for secondary assembly so that the holding jig provided on the moving plate can be opened to receive the primary assembly of the wire harness in the holding jig. This is a structure having a substantially U-shaped receiving portion that is widened upward.

By mechanically transferring the wire harnesses and forming the same positional relationship in this manner, all or part of the manual wiring work can be omitted.

[Operation] Since the positions of the plurality of grippers are set according to the shape of the wire harness and the moving plate serving as the gripping fixture fixing device is provided, each part of the wire harness can be held by the grippers. Since the shape is maintained and transferred and installed in the next process, it is not necessary to perform complicated wiring work again.

Embodiment An embodiment of the present invention will be described with reference to the drawings. Fourth
The figure shows a secondary assembly 7, which is a completed assembly of a wire harness. FIG. 5 is an example of a preliminary assembly that constitutes a wire harness with the primary assembly 4. The secondary assembly 7 is completed by combining several types of these pre-assembled products. FIG. 6 shows a manufacturing apparatus for a wire harness assembling method according to the present invention, which comprises a primary assembling section A, a secondary assembling section B, and a conveyance control section C.
The transfer section of the transfer control section C is constructed manually or by a known drive device technology such as air or hydraulic pressure. FIG. 7 shows details of a gripping tool using a robot hand, which is a known technique, in which the holding finger is opened and closed by air, and the inner surface of the holding finger is flexible, for example, rubber or plastic is inserted. The primary assembly 4 which is rarely deformed because it is a wire bundle product is easily and surely held. FIG. 8 shows a wire harness holding jig 3 for processing the primary assembly 4 and the secondary assembly 7, and the upper U-shaped portion is appropriate depending on the outer diameter of the assembly wire harness and accessories. Each shape can be selected. The assembly drawing plates 5 and 6 shown in FIGS. 2 and 3 are obtained by fixing the holding jig 3 on the assembly drawing plates in accordance with the shape and size of the wire harness.

Next, the assembling method will be described. On the primary assembly drawing board 5 of the primary assembly A shown in FIG. 6, there is the primary assembly 4 assembled in the same shape as the partial shape of the secondary assembly 7. The moving plate 1 provided with a plurality of grippers 2 installed in advance at a position for holding a predetermined place of the primary assembly, which is operated in the transport section 9, is indicated by a mark on the primary assembly 4 in FIG. When the holding portion 8 is gripped at the same time, lifted upward from the holding jig 3 on the primary assembly drawing board 5 shown in FIG. 8 and stopped at a predetermined height, the secondary assembly drawing board of the secondary assembly part B is The sheet is conveyed in the direction of 6 and stopped above the holding jig 3 provided on the secondary assembly drawing board 6. By holding at a predetermined height from the holding jig 3 and releasing the gripping tools all at once, free fall or by catching the holding jig 3 on the secondary assembly drawing board 6,
Install the wire harness.

The moving plate 1 is returned to the primary assembly drawing plate 5 and stopped by the carrying section 9 of the carrying control section C in order to repeat the above steps.

[Effects of the Invention] By mechanically transferring the wire harnesses and forming the same positional relationship in this way, all or part of the manual wiring work can be omitted. For this reason, complicated wiring work can be omitted, which improves the efficiency of assembly work,
Eliminates damage to broken wire harness parts during the wiring process. In addition, it is easy to make a line between the wire harness manufacturing processes, and the process becomes a series of operations, reducing the number of products in process.

[Brief description of drawings]

FIG. 1 is a plurality of grippers installed on a moving plate, FIG. 2 is a primary assembly attached to a holding jig for a primary assembly drawing plate, and FIG. 3 is a holding jig for a secondary assembly drawing plate. FIG. 4 shows a primary assembly attached to a tool, FIG. 4 shows a secondary assembly, FIG. 5 shows a primary assembly with a holding portion, and FIG. 6 shows a wire harness assembling method according to the present invention. FIG. 7 is a schematic view showing a partial cross section of a holding part in one embodiment of a manufacturing apparatus, FIG. 7 is a schematic view of a gripping tool using a robot hand, which is a known technique, and FIG. 8 is a holding jig. 1: moving plate, 2: gripping tool, 3: holding jig, 4: primary assembly product, 5: primary assembly drawing plate, 6: secondary assembly drawing plate, 7: secondary assembly product, 8: holding part, 9 : Transporting section A: Primary assembly section, B:
Secondary assembly section, C: Transfer control section

Claims (2)

[Claims] 1. A bending member and a terminal portion of a primary assembly of a wire harness for an automobile laid on a drawing board are used as holding portions, and a gripping tool corresponding to each of the holding portions is attached to the drawing board. By providing the movable plate which can be freely approached, the holding part is gripped by the gripping tool when the moving plate approaches the drawing plate, and then the moving plate is moved onto the drawing plate to be used for secondary assembly. ,
A wire harness transfer method, characterized in that the primary assembly of the wire harness is transferred onto a drawing board to be subjected to secondary assembly while keeping the shape wired on the drawing board. 2. A movable plate is provided with a plurality of holding jigs each having a substantially U-shaped receiving portion whose upper part is expanded and corresponding to the shape of the secondary assembly, on a drawing plate for secondary assembly. The wire harness transfer method according to claim 1, wherein a primary assembly of the wire harness is received in the holding jig by opening a provided gripping tool.