JPS6048848B2 - Wire harness manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clamp jig direction control device used for manufacturing wire harnesses.

Wire harnesses are generally constructed by combining a large number of electric wires, providing branch lines to the main line, and connecting connectors to each of these lines. Because it requires a great deal of labor and time to manufacture, it has traditionally been difficult to use various automatic wiring methods. A method is proposed.
However, in principle, these methods first cut the wires to a predetermined length and route them between each connector, so while they have the advantage of being able to automate the entire process up to the installation of the connectors, There was a problem in that it took a long time to manufacture and the productivity was low.

The present invention has been made with attention to the above-mentioned points, and firstly, a method for arranging and holding electric wires at appropriate intervals in advance at positions corresponding to the terminal portions of main lines, branch lines, etc. constituting a predetermined wire harness. The bridge is placed on the wiring table, and the wiring jig with the wire attached to the wiring head running on the work table and the clamp jig for locking and cutting the wire can be freely rotated and raised/lowered. The cable is attached to the cable, and the desired electric wire is routed between each bridge using a cooperative mechanism between the wiring table and the wiring head, and an appropriate length of the terminal portion is left from the bridge. This method allows wiring and cutting of electric wires to be carried out at the same time to ensure continuity, and also facilitates the removal of the insulation coating from the terminal portion, the crimping of connection terminal fittings, and the attachment of connectors, thereby making it easier to manufacture them. It is an object of the present invention to provide a clamping jig direction control device having a configuration that makes it possible to significantly reduce the time and labor required. Hereinafter, the present invention will be explained in detail with reference to the drawings.

In FIG. 1A, 1 is a workbench, on which a plurality of wiring locking pins 2 and a wiring table 3 are arranged in advance at predetermined positions.

Reference numeral 4 denotes a bridge placed on the wiring table 3, and as shown in the opening of FIG. It is formed by connecting a large number of wires in a row in the horizontal direction at regular intervals, and is cut as appropriate depending on the number of wires to be wired.

This bridge 4 is preferably made of the same type of thermoplastic resin as the insulating coating of the electric wire. Note that the welded pieces 6, 6'
Instead, a flexible gripping piece may be provided to hold it. Reference numeral 8 denotes a wire that has been routed, and a programmed automatic machine, that is, a cooperation mechanism between a wiring head equipped with a wire clamping jig and the wiring table 3, sequentially places the wire on the wiring table 3 on the bridge 4. The wires 8 are positioned and locked between the welded pieces 6 and 6', and the end portions of each wire 8 are cut off from the bridge 4 leaving a predetermined length l, and wired to connect each wiring table 3. , wire harness A is obtained.

When the wiring is finished, the workbench 1 is moved to the next station, and the welding devices installed corresponding to each wiring table 3 simultaneously weld the welded pieces 6, 6' of each bridge 4 to the insulation coating of the wire 8. is welded to.

Next, a tape 9 is wound around the branch portion of each electric wire 8 and temporarily fixed. As a result, as shown in FIG. 2, each electric wire 8 is routed with a predetermined wiring spacing and number of wires according to the product spacing, and is connected to the bridge 4 by leaving a predetermined length l from each end. Thus, the wire harness B is obtained in a state in which the wire harnesses are arranged and fixed in an orderly manner with constant intervals. This wire harness B is
Although it is a semi-finished product, all wires are automatically routed with the desired wiring spacing and number of wires, and the terminals of each wire are arranged and fixed in an orderly manner with a bridge, leaving a predetermined length.
: It is extremely advantageous for storage, transportation, etc., at a stage before proceeding to the secondary process such as connecting a connecting terminal fitting or a connector to the terminal part.

1 In the embodiment shown in FIG. 3, the bridge 4 is fixed (remove the coating from the end of each electric wire 8 to be fixed, remove the insulation coating using a terminal fitting attaching device, and crimp the connection terminal fitting 11j0 to form a wire harness. C.

The terminal portion of each electric wire 8 constituting this wire harness C is as follows:
Since they are arranged and fixed in an orderly manner by the bridge 4, a plurality of connecting terminal fittings 10 can be crimped and connected at the same time, and as shown in FIG. There is no hassle of inserting each book, and it can be easily inserted at the same time.

The completed wire harness D shown in FIG.
The terminal portion of the bridge 4 is welded and fixed by a bridge 4.

Therefore, even if a local tensile force is applied to a particular electric wire 8' during transportation, storage, or when actually installed and used in a car, for example, the tensile force is dispersed by the bridge 4, and the connecting terminal fitting 10 can be prevented from coming off from the connectors 11. The apparatus according to the present invention will be explained below in FIG.

FIG. 5 is a schematic perspective view of the wiring device, in which an X-axis 12 is provided on both sides of the workbench 1 in the longitudinal direction, a Y-axis 14 is provided on a support 13 that moves on the X-axis 12, and the Y-axis 14 Wiring head 1
5 is provided movably.

The X-axis 12 and the Y-axis 14 are rotated separately by motors, and by appropriately setting the amount of rotation, the wiring head 15 and the electric wire 8 held by the head 15 are placed on the workbench 1. Each wiring stand 3 can be moved to any desired position. Reference numeral 16 denotes a control device, in which the entire wiring process is programmed (NC-controlled) using tape.

Reference numeral 17 denotes an electric wire reel station, and each electric wire 8 whose insulation coating is color-coded is attached to a tensile force reducing capstan 18 which is rotated in the direction in which the electric wire is fed out by a motor (not shown).
It is connected to the wiring head 15 via.

FIG. 6 is a side view of the wiring head 15, with a wiring jig 24 at the top of the wiring head main body 19 and a clamping jig 45 at the bottom.
are provided so as to be able to move up and down, respectively, and to be rotatable relative to a predetermined position.

An annular wiring jig mounting base 21 is rotatably provided in the wiring head main body 19 by a plurality of guide rollers 20, and the mounting base 21 is connected to a regulating rotation motor 22 such as a servo motor.
It is linked to. Wiring jig elevating guide pipes 23 are provided at predetermined intervals on the wiring jig mounting base 21, a plurality of wiring jigs 24 are inserted, and the wiring jig 24 is held in a predetermined position using the knob pins 25. Holds at height.

Different color wires 8 are connected to each wiring jig 24 from the reel station 17, but the rotation of the wiring jig mounting base 21 interlocked with the regulating rotation motor 22 allows any wiring jig to be connected to the wiring jig 24. 24 can be selectively positioned at a predetermined position P (FIG. 7).

Reference numeral 26 represents a lifting unit that raises and lowers the wiring jig 24 at a predetermined position P, and 27 represents a motor that drives a capstan 33 of the wiring jig 2-4, which will be described later.

As shown in FIG. 8, the wiring jig 24 is provided with a connecting bar 30 that engages with the lifting unit 26 on the outside of a cylinder 29 with a wire insertion hole 28 inside, and a connection bar 30 that engages with the lifting unit 26.
A capstan head 31 and a wire non-return device 35 are provided in the upper part, and a nozzle 38 for wiring the wire is provided in the lower part. The capstan head 31 has the motor 2 on the outside.
A wheel 32 driven by
A capstan 33 is provided which is pivotally attached to the capstan 2, and a wire loosening preventing piece 34 is provided facing the lower part of the capstan 33.

Further, the electric wire non-return device 35 is provided with non-return claws 36, 36 urged by a spring 36a inside thereof, and a flexible electric wire guide 37 is provided at the upper end. Wiring of electric wires. The nozzle 38 is formed of a coil spring, and has enough elasticity that it bends in the opposite direction to the running direction when a certain tension is applied to it while the wiring jig 24 is running, and returns to its original state when the tension is released when the wiring jig 24 stops running. It is preferable to use a wire that corrects the bending of the wire being laid. 38a is a support tube for the wiring nozzle 38, and the tube 38a is the wire support tube 38 inserted into the cylindrical body 29
A screw 38b is screwed to the lower part of c.

The electric wire 8 is inserted from the electric wire guide 37 at the upper end of the wiring jig 24, passes between the non-return claws 36, and is attached to the capstan 3.
After being wrapped once in the wire support tube 38c) and the nozzle support tube 38a, it is pulled out from the lower end of the wiring nozzle 38.

The end portion of the wire 8 is locked to a wire clamp claw 52 of the wiring table 3, which will be described later, and the motor 27 is automatically driven to rotate the capstan 33, and the wiring jig 24 runs to apply tension. As the capstan 33 rotates, its tensile force is reduced, and the electric wire 8 is smoothly fed out.

Furthermore, when the electric wire 8 is cut by the cutting blade 48 of the clamp jig 45, which will be described later, and its tensile force is suddenly released, the elastic pressing force of the electric wire loosening prevention piece 34 facing the capstan 33 prevents it from returning. be done.

As a result, the end portion of the electric wire 8 is always exposed from the tip of the wiring nozzle 38. The above is a case of a wiring jig that actually runs for wiring wires, and wire check claws 36, 36 are provided on the upper part of each wiring jig 24.

Therefore, the electric wire 8 is prevented from being pulled out by the action of the electric wire non-return claw 36 urged by the spring 36a, and each wiring jig 24 always runs with the electric wire inserted and held. FIG. 9 is a side view of the elevating and rotating device for the clamp jig 45, in which numeral 39 indicates the clamp jig body, and the actuator 40
It is provided so as to be movable up and down with respect to the wiring head main body 19.

Reference numeral 41 denotes an annular clamp jig mounting plate which also serves as a pulley, and is rotatable with respect to the clamp jig main body 39, and is provided at a position where its center coincides with the axis of the wiring jig 24 at the predetermined position P. .

Reference numeral 42 denotes a regulating rotation motor for controlling the direction of the clamp jig 45, 43 a timing pulley thereof, and 44 a belt connecting the clamp jig mounting board 41 and the timing pulley 43.

Therefore, the clamp jig 45 can be rotated to a desired position about the wiring jig 24 by driving the regulating rotation motor 42, and can be moved up and down by the actuator 40. FIG. 10 is an enlarged side view of the clamp jig 45. The clamp jig 45 includes, in order from the front, a front end clamp plate 46, a wire end insertion guide plate 47 with a built-in coil spring 47a, a cutting blade 48, and a rear end end clamp plate 46. A clamp plate 49 is provided, and the guide plate 47 and cutting blade 48 slightly protrude from the lower surfaces of the front and rear end clamp plates 46 and 49 and are provided to be perpendicular to each other.

This front terminal clamp plate 46 and rear terminal clamp plate 49
and are provided at symmetrical positions with respect to the cutting blade 48. FIG. 11 is a perspective view of the wiring table 3, in which a plurality of nozzle guide pins 50 are provided at the front end of the upper part, a nozzle guide groove 54 is provided at the rear end, and a bridge placement groove for sequentially placing the bridges 4 in the middle. 51, a wire clamp claw 52 and a cutting blade contact surface 53 are provided, and a fitting hole 55 for a welding jig 60, which will be described later, is provided on one side of the bridge mounting groove 51.

Note that 56 is a release screw for the wire clamp claw 52. The nozzle guide pin 50, the nozzle guide groove 54, etc. are increased or decreased depending on the number of wires to be wired, and are used to guide the wiring nozzle 38 of the wiring jig 24 during wiring, and are also used as wire clamps. The claws 52 are used to hold the electric wires during wiring and until the welding process, and can hold only the inserted electric wires.

FIG. 12 shows the correspondence relationship between the wiring table 3, the wiring jig 24, and the clamp jig 45, and shows the starting point of the wiring (the 12th
In Figure A), the bridge 4 is placed in advance in the bridge mounting groove 51 of the wiring table 3-1, and the wiring nozzle of the wiring jig 24 is placed between the bridge 4 and the nozzle guide pin 50. 38 is bent and makes contact, and the end portion (length 1) of the wire 8 exposed from its tip is located above the wire clamp claw 52 in a slightly bent state.

In this state, when the clamp jig 45 is pushed down, the wire end insertion guide plate 47, which protrudes from the lower surface of the front end clamp plate 46, comes into contact with the end of the wire 8, as shown in the opening of FIG.

Therefore, the wire 8 is guided to the center of the wire clamp claw 52, and then steadily pressed by the front end clamp plate 46 and held between the clamp claws 52, and at the same time, the wire 8 is guided between the welded pieces 6, 6' of the bridge 4. located and routed. That is, at the starting point of the wiring, even if the wire exposed from the tip of the wiring nozzle 38 is slightly bent, the wire end insertion guide plate 47 and the front end clamp plate 46 can be inserted steadily. It is locked to the wiring stand 3-1.

FIG. 12C shows the end point of the wiring, and the wiring table 3-2 is placed opposite the wiring table 3-1.

Furthermore, the wiring nozzle 38 of the wiring jig 24 is bent and comes into contact with the nozzle guide groove 54, and the electric wire 8 exposed from its tip is connected to the wiring locking pin 2 and the nozzle (guide pin 50). Therefore, the electric wire 8 is stretched linearly between the electric wire clamp claw 52 and the welded pieces 6, 6' of the bridge 4, respectively. In this state, when the clamp jig 45 is pushed down, the electric wire 8 is steadily pressed against the rear terminal clamp plate 49 and is held between the clamp claws 52, and at the same time the cutting blade 1
It is cut by the cutting blade 48 leaving an end portion (length l) on the contact surface 53. (Next, if the clamping jig 45 is rotated by the operation of the regulating rotation motor 42 (see Fig. 9) and positioned immediately after the wiring jig 24, the arrangement can be made as in the case of Fig. 12A. Return to the starting point state of the cable.

FIG. 13 schematically shows the wiring process using the wiring jig 24, the clamp jig 45, and the wiring table 3.

1) Position a specific wiring jig 24 at a predetermined position P by the regulating rotation motor 22 (hereinafter referred to as "wiring jig selection")
, the wiring jig 24 is lowered to the rear of the wiring table 3-1 by driving the lifting unit 26 (hereinafter referred to as "lowering the wiring jig").
).

(Fig. 13A) (2) Run the wiring jig 24 along the X-axis 12 and Y-axis 14 (hereinafter referred to as "XY-axis travel"), and move the wiring jig 24 to start the wiring (Fig. 12). The clamp jig 45 is lowered and raised by driving the actuator 40 (hereinafter referred to as "lowering and raising the clamp jig"), and the end portion (length l) of the electric wire 8 is placed on the wiring table. 3-1 (see FIG. 12A), the capstans 18 and 33 for reducing the tensile force of the electric wire are simultaneously driven (hereinafter referred to as "capstan drive").

(Exit in Figure 13) (3) By "XY-axis traveling", the electric wire 8
The wiring jig 24 is moved toward the wiring table 3-2 while being stretched.

(Fig. 13 C) (4) Position the wiring jig 24 at the end point of the wiring (see Fig. 12 C) with respect to the wiring table 3-2, and "lower and raise the clamp jig". This locks and cuts the electric wire 8.

Then, "capstan drive" is stopped. (FIG. 13D) At this point, the wiring between the wiring tables 3-1 and 3-2 is completed.

(5) The wiring jig 24 is positioned behind the wiring table 3-2 by "XY-axis travel", and the clamp jig 45 is positioned directly behind the wiring jig 24 by driving the regulating rotation motor 42. urge

That is, clamp jig direction control is performed. (Figure 13 E)
(6) By "XY-axis travel", the wiring jig 24 moves to another preset wiring table, while the original wiring jig 24 is raised by the drive of the lifting unit 26 and reaches a predetermined height. It is held in place.

:7) Next, in the same way as in (1), another specific wiring jig 24 is "selected as a wiring jig", "lowered the wiring jig" is performed, and the steps (2) and (3) are performed sequentially.・・・・・・Repeat the process of (7),
A desired wire harness A as shown in FIG. 1A is obtained.

The opening in FIG. 4 shows the correspondence between the wiring table 3 and the welding device, and 57 is the welding jig main body, which is provided on the mounting frame 58 via an actuator 59 so as to be able to move up and down. 1 The welding jig 60 houses a slide plate 61 having a plurality of slide grooves 62 in a welding jig main body 57, and the welding jig 60 houses a slide plate 61 having a plurality of slide grooves 62.
2, a comb-shaped crimp rod 63 with an arcuate recess 64 formed at the tip;
is provided to be movable up and down by an actuator 65, and a hot air device 66 is pivotably supported on the welding jig body 57 so as to be tiltable.

The hot air device 66 has a built-in heater (not shown) and heats the air sent by the air vibrator 67 to heat the welded pieces 6, 6' of the bridge 4 placed on the wiring table 3 and the insulation coating of the electric wire 8. to melt. Note that 68 is the fitting hole 55 of the wiring table 3.
This is the fitting pin for the FIG. 15 shows the process of welding the bridge 4 and the electric wire 8 using the welding jig 60. In FIG. A state is shown in which the crimp rod 63 is inserted into the hole 55 and positioned on the bridge 4, and hot air supplied by the heating device 66 is blown toward the bridge 4.

In the opening in FIG. 15, after the heating treatment with the hot air, the crimp rod 63 is lowered by driving the actuator 65 and the wiring table 3 is lowered.
is pressed down into the bridge mounting groove 51 of the arch-shaped recess 6.
4 shows the state in which the upper portions of the welding pieces 6, 6' are welded to the insulating coating of the electric wire 8.

At this time, the welding pieces 6, 6' have an inclined part 7 (see the opening in Figure 1).
, the welding pieces 6 and 6' are pressed and crimped inward by smoothly engaging the arcuate recess 64 of the crimping rod 63. By providing this welding jig 60 for each of the plurality of wiring tables 3 in FIG. 1A, welding operations can be performed simultaneously.

Next, by winding the branch portion of each electric wire 8 with tape 9, a wire harness B as shown in FIG. 2 is obtained. FIG. 16 shows the entire device for removing the coating from the wire end J end (length E) of the wire harness B and attaching the terminal fitting, 69
1 is an electric wire holder having an electric wire guide pin 70, and an auxiliary clamp 71 is provided on the pin 70 so as to be openable and closable, so as to clamp the electric wire.

72 is a wire sheath removal/cutting device provided opposite to the wire holder 69, which includes a pair of sheath removal/cutting blades 73, 7;
4, and the blades 73 and 74 are provided so as to be movable toward and away from each other in the direction in which they face each other and in the direction of the wire holder 69.

75 is a clamp for the auxiliary clamp 71.

A terminal crimping device 76 has a lower crimping die 77 and an upper crimping die 78 driven by a hydraulic press ram 79. The crimping device 76 is configured to be slidably movable behind the wire holder 69. 80 is a terminal feeding guide incorporating upper and lower terminal feeding claws 81 and 82 (see FIG. 17); 83 is a terminal transfer cylinder that moves together with the terminal crimping device 76; 84 is a chain terminal connecting a large number of terminals; 85 is a terminal feed adjustment piece.

FIG. 17 schematically shows the steps of removing the coating from the end of the wire, cutting it, and attaching the terminal fitting.

(i) The electric wire 8 fixed to the bridge 4 with the end portion (length l) left is placed on the electric wire holder 69 and clamped and fixed by the electric wire guide pin 70 and the auxiliary clamp 71. (Figure 17a) (11) Pair of coating removal, cutting blades 73, 7
4 is opened and approached to the wire holder 69 side.

(Figure 17) (IiD opposing coating removal, cutting blade 7
3 and 74, and lightly pinch the electric wire 8 from above and below (0
point) and retreat to the coating removal position (0, point).

(FIG. 17C) In the above (Ii) and (IiD), the electric wire 8 is neatly divided by the electric wire guide pin 70 and is held down by the sheath removal and cutting blades 73 and 74 approaching from above and below, so that the end of the electric wire 8 is Even if the part is curved vertically or horizontally, it will be held securely.

(Iv) At the coating removal position (0, point), the upper and lower coatings are removed, and only the coating portion is cut by the cutting blades 73 and 74;
Move back to the wire cutting position (0. point). i.e. 0,-
0. The conductor portion of the electric wire 8 is exposed between the points. (1st
Figure 7 D) (v) Wire cutting position (0.

At point ), the electric wire 8 is cut by the upper and lower coating removal and cutting blades 73 and 74, and the blades 73 and 74 retreat. Therefore, each electric wire 8 is cut from the bridge 4 at a fixed position, and the tips thereof are all aligned.

(FIG. 17E) to l) The terminal tightening device 76 is moved behind the wire holder 69.

At the same time, the chain terminal 84 is also moved according to the number of electric wires 8 by the terminal feed claws 81 and 82. (Go to Figure 17) ~m
By driving the hydraulic press ram 79, each connecting terminal fitting 10 of the chain terminal 84 is crimped to the end portion of each electric wire 8 (see FIG. 3), and the terminal crimping device 76 is retreated to its original position.

At this time, the moving distance of the crimping device 76 becomes QQ, but the terminal feed claw 82 becomes Q2Q3 due to the terminal feed adjustment piece 85, so the connecting terminal fitting 10 moves QQ, -Q.

Q. (four pieces in the figure) corresponding to the number of pieces are sent to the next crimping process. Below, (i), (Ii)...
By repeating the above process in sequence, a wire harness C with connection terminal fittings 10 crimped at each wire end as shown in FIG. 3 is obtained.

Next, by attaching connectors to each part of the connection terminal fitting 10, a completed wire harness D as shown in FIG. 4 is obtained. As explained above, the present invention includes a wiring table that locks electric wires on a workbench, a wiring head that runs on the workbench, and a control rotation for the main body of the wiring head. In a wire harness manufacturing device in which a wiring jig is installed so that it can be raised and lowered to simultaneously route and cut electric wires, the electric wire is engaged with a wire clamp claw provided on the wiring table to lock the wire. A clamping jig consisting of a front end clamp plate and a rear end clamp plate provided at symmetrical positions with respect to the cutting blade is clamped in the clamp jig main body, which is movable up and down relative to the main body of the wiring head by an actinuator. The clamp jig is attached to a jig mounting board, and the clamp jig mounting board is rotated horizontally by a motor.By positioning the clamp jig directly behind the running wiring jig, the clamp jig is always connected to the wire. It is possible to lock and cut the terminal portions at the same time leaving a certain length, and to select any wires attached to the wiring jig between desired wiring stands and route them continuously.

Since the clamp jig is configured to freely rotate around the wiring jig that has been rotated to a predetermined position, the clamp jig is configured to freely rotate around the wiring jig that has been rotated to a predetermined position, so it can be
Wires can be locked and cut under constant conditions.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, FIGS. 1 to 4 are explanations and diagrams of each embodiment when assembling a wire harness, FIG. 5 is an overview perspective view of the wiring device, and FIG. 6 is a wiring head. 15, FIG. 7 is a plan view of the wiring head 15, FIG. 8 is a partial sectional view of the wiring jig 24, FIG. 9 is a side view of the elevating and rotating device for the clamp jig 45, and FIG. 10 is an enlarged side view of the clamp jig 45, FIG. 11 is a perspective view of the wiring table 3, and FIG. 12 is an explanation showing the mutual relationship between the wiring table 3, the wiring jig 24, and the clamp jig 45. Figure 13 is an explanatory diagram of the wiring process, Figure 14
15 is an explanatory diagram showing the mutual relationship between the wiring table 3 and the welding device, FIG. 15 is an explanatory diagram of the wire welding process, and FIG. 16 is a perspective view showing the entire device for removing the wire coating and attaching the terminal fitting. FIG. 17 is an explanatory diagram of the steps of removing the coating, cutting, and attaching the terminal fitting.

Claims (1)

[Claims] 1. A wiring stand for securing electric wires is arranged on a workbench, and a wiring head is provided that runs on the workbench, and the main body of the wiring head has a wiring that can move horizontally and move up and down. In a wire harness manufacturing device in which a jig is attached and wires are routed and cut at the same time, a front end clamp plate and a rear end clamp plate that engage with wire clamp claws provided on the wiring table to lock the wire are used. A clamp jig, in which a terminal clamp plate is provided at a symmetrical position with respect to the cutting blade, is attached to a clamp jig mounting board in a clamp jig body that is provided to be movable up and down relative to the main body of the wiring head using an actuator. A wire harness manufacturing device equipped with a clamp jig direction control device characterized in that a clamp jig mounting board is horizontally rotated by a motor.