JPS6046491B2 - Electric wire clamp jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clamping jig for electric wires used in 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, these methods require the wires to be predetermined.

As a general rule, the wires are cut to length and routed between each connector, which has the advantage of being able to automate the entire process up to the installation of the connectors, but it takes time to manufacture and reduces productivity. There was a problem that it was bad. 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 parts of main lines, branch lines, etc. constituting a predetermined wire harness. The bridges are placed on a wiring stand, and the wires are routed between each bridge, leaving an appropriate length of terminal end from the bridge. In addition to simultaneously performing the cutting and making it continuous, it also facilitates the removal of the insulation coating from the terminal portion, the crimping of the connecting terminal fittings, and the attachment of connectors, thereby greatly reducing the time and labor required for manufacturing. It is an object of the present invention to provide a clamping jig for electric wires that makes it possible to reduce the amount of wire clamping. That is, in the present invention, a wiring table for locking electric wires is disposed on a workbench, a wiring head that runs on the workbench is provided, and a wiring jig is attached to the main body of the wiring head. In a wire harness manufacturing device that simultaneously routes and cuts electric wires, a front end clamp plate and a rear end clamp plate that engage with wire clamp claws provided on the wiring board are placed against a wire cutting blade. This electric wire clamping jig is provided at symmetrical positions and configured to be vertically movable and horizontally rotatable around the wiring tool.

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. 4 is a bridge placed on the wiring table 3;
As shown in the figure, a large number of pairs of welded pieces 6, 6'' having sloped portions 7 at the outer upper ends are arranged horizontally at regular intervals on a narrow strip-shaped substrate 5, and the electric wires Cut and use as appropriate depending on the number of wires.

This bridge 4 is preferably made of the same type of thermoplastic resin as the insulating coating of the electric wire. In addition, the above welded piece 6,6″
Instead, a flexible clamping 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, 6'', and the ends of each wire 8 are cut off from the bridge 4 leaving a predetermined length e, 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 e from each end. As a result, wire harnesses B are obtained which 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.
This is extremely advantageous for storage, transportation, etc., before proceeding to the next process, such as connecting a connecting terminal fitting or a connector to the terminal part.

In the embodiment shown in FIG. 3, the end portion of each electric wire 8 fixed by the bridge 4 is coated, the insulation coating is removed using a terminal fitting attachment device, and the connecting terminal fitting 10 is crimped to connect the wire harness C. This is what I did.

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 connection terminal fitting 10 can be prevented from being removed from the connectors 11.The apparatus according to the present invention will be explained from FIG. 5 onwards.

FIG. 5 is a schematic perspective view of the wiring device. 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 table 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 a reel station for electric wires, and each electric wire 8 whose insulating coating is color-coded is connected to a capstan 18 for reducing the tensile force 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, in which a clamp jig 45 is mounted on the upper part of the wiring head main body 19 and the lower part of the wiring jig 2. It is provided.

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 is a lifting unit that raises and lowers the wiring jig 24 at a predetermined position P, and 27 is a motor that drives a capstan 33 of the wiring jig 24, 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.
At the top of the capstan head 31 and wire check device 3 are installed.
5, a nozzle 38 for wiring the electric wire is provided at the lower part. The capstan head 31 has the motor 27 on the outside.
The wheel 32 driven by
A capstan 33 is provided which is pivoted to the capstan 33, and a wire loosening prevention piece 34 is provided facing the lower part of the capstan 33.

Further, the electric wire check device 35 is provided with check claws 36, 36 urged by a spring 36a inside thereof, and a flexible electric wire guide 37 is provided at the upper end. The wire wiring nozzle 38 is formed of a coil spring, and when a certain tension is applied to the wiring jig 24 while running, it bends in the opposite direction to the running direction, and returns to its original state when the tension is released when the running is stopped. It is preferable to use a material that has sufficient elasticity to straighten the bends of the wire being wired. 3a is a support tube for the wire nozzle 38, and the tube 38a is a wire support tube 38c inserted into the cylinder body 29.
A screw 38b is secured to the lower part of the holder.

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.
3, the wire is passed through the wire support tube 38c1 and the nozzle support tube 38a to the wiring nozzle. Pull it out from the bottom end of 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.

In addition, the electric wire 8 is connected to a cutting blade 48 of a clamp jig 45, which will be described later.
When the tension is suddenly released,
The elastic pressing force of the wire loosening prevention piece 34 facing the capstan 33 prevents the wire from returning.

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 runs with the electric wire inserted and held at all times.
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 4
0 so that it can be raised and lowered 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 clamp 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 clamp 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 terminal clamp plate 46, a wire terminal insertion guide plate 47 with a built-in coil spring 47a, a cutting blade 48, and a rear terminal. clamp plate 49
The guide plate 47 and the 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 the rear end clamp plate 49 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 52 and a cutting blade contact surface 53 are provided, and a bridge mounting groove 51 is provided.
A fitting hole 55 for a welding jig 60, which will be described later, is provided on one side.

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. Figure 12 shows wiring table 3
This shows the correspondence between the wiring jig 24 and the clamp jig 45. At the starting point of wiring (Fig. 12A), the bridge 4 is placed in the bridge mounting groove 51 of the wiring table 3-1 in advance. The bridge 4 and the nozzle guide pin 50
During this time, the wiring nozzle 38 of the wiring jig 24 is bent and contacted, and the end portion (length e) of the electric wire 8 exposed from the tip thereof is as follows.
It is located above between the wire clamp claws 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, then held between the clamp claws 52 that are steadily pressed by the front end clamp plate 46, and at the same time is held between the welded pieces 6, 6'' of the bridge 4. 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 4
7 and the front end clamp plate 46 are securely locked onto the wiring table 3-1 by the cooperative mechanism.

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

Further, the wiring nozzle 38 of the wiring jig 24 bends and contacts the nozzle guide groove 54, and the electric wire 8 exposed from the tip thereof
is linearly stretched between the wiring table 3-1 and the wiring table 3-1 via the wiring locking pin 2 and the nozzle guide pin 50. Therefore, the electric wire 8 is aligned with the center of the electric wire clamp claw 52 and the welded pieces 6, 6'' of the bridge 4. In this state, when the clamp jig 45 is pushed down, the electric wire 8 is positioned at the rear. It is steadily pressed by the end clamp plate 49 and held between the clamp claws 52, and at the same time is cut by the cutting blade 48 leaving the end portion (length f) on the cutting blade contact surface 53.

Next, the clamp jig 45 is attached to the regulating rotation motor 42 (the ninth
If it is rotated by the operation of (see figure) and positioned directly behind the wiring jig 24, it will return to the starting position of the wiring, as in the case shown in Fig. 12A.

Figure 13 shows wiring jig 2, clamp jig 45, and wiring table 3.
This figure schematically shows the wiring process according to the method.

1. Positioning a specific wiring jig 24 at a predetermined position P by the regulating rotation motor 22 (hereinafter referred to as 1 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 0 wiring jig lowering).

(Fig. 13A) 2 Wiring jig 24 on X axis 12 and Y axis 14
(hereinafter referred to as RXY axis travel), the wiring jig 24 is positioned at the starting position of the wiring (see Fig. 12A), and the clamp jig 45 is lowered and raised by driving the actuator 40 ( Lowering of the 0 clamp jig,
The terminal part (length f) 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 1 capstan drive).

(Figure 13) 3rThe electric wire 8 is stretched by the XY-axis travel motion, and the wiring jig 24 is moved toward the wiring table 3-2.

(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,
1. Lock the electric wire 8 by lowering and raising the clamp jig.
disconnect.

Next. Stop the capstan drive. (FIG. 13 D) At this step, 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 rXY axis travel, and the clamp jig 45 is positioned directly behind the wiring jig 24 by driving the regulating rotation motor 42.
That is, clamp jig direction control is performed. (Figure 13 E)
By traveling on the 6rrXY axes, the wiring jig 24 moves to another preset wiring table), and the original wiring jig 24 is raised by the drive of the lifting unit 26 and held at a predetermined height. be done.

7 Next, similarly to 1, another specific wiring jig 24 is selected as the 0 wiring jig, and the J wiring jig is lowered, and the 2, 3, and
By repeating step 7, the desired wire harness A as shown in FIG. 1A is obtained.

The opening in FIG. 14 shows the correspondence between the wiring table 3 and the welding device, and 57 is the welding jig main body, and the mounting frame 58 is provided so as to be movable up and down via an actuator 59.

The welding jig 60 accommodates a slide plate 61 having a plurality of slide grooves 62 in a welding jig main body 57.
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 rotatably supported on the welding jig main body 57.

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. 68 is the fitting hole 55 of the wiring table 3.
This is the fitting pin for the FIG. 15 shows the welding process of 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.

After the heating and melting process using the hot air, the actuator 65 is driven to lower the crimp rod 63 into the bridge mounting groove 51 of the wiring table 3, and the opening in FIG. The upper portions of the welding pieces 6, 6'' are shown welded to the insulation coating of the electric wire 8.

At this time, the welding pieces 6, 6'' have an inclined portion 7 (see the opening in Figure 1).
, the welding jig 60 engages with the arcuate recess 64 and circular edge of the crimping rod 63, and the welding pieces 6, 6'' are pressed and crimped inward. By providing each of a plurality of wiring tables 3, the welding operation can be performed simultaneously.Then, 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 portion (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 and cutting device provided opposite to the wire holder 69, and a pair of sheath removal and 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 e) 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. (1st
Figure 7 A) Remove the coating from the pair of 11 and approach the wire holder 69 side with the cutting blades 73 and 74 open.

(Figure 17) U1 opposite coating removal, cutting blade 73,
74 and lightly pinch the electric wire 8 from above and below (0 points)
, and retreat to the coating removal position (01 point).

(Fig. 17 C) In the above 11 and Iji, the electric wire 8 is neatly partitioned by the electric wire guide pin 70 and is pressed down by the sheath removal and cutting blades 73 and 74 approaching from above and below, so that the terminal portion thereof is , it is firmly held even if it is bent to the left or right.

At the 1V sheath removal position (point 01), only the sheath is cut by the upper and lower sheath removal and cutting blades 73 and 74, and the electric wire is retreated to the wire cutting position (point 02).

That is, the conductor portion of the electric wire 8 is exposed between points 01 and 02. (Fig. 17D) v Electric wire cutting position (0.

At point ), the wire 8 is cut by the lower sheathing and cutting blades 73, 74, and the blades 73, 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) ■ The terminal crimping device 76 moves 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 Fig. 17) ■ By driving the hydraulic breath ram 79, each connection terminal fitting 10 of the chain terminal 84 is swaged to the end of each electric wire 8 (see Fig. 3), and the terminal swage device 76 is returned to its original position. retreat to. On this occasion,
The moving distance of the crimping device 76 is (?), but the terminal feed claw is moved by the terminal feed adjustment piece 85 (??), so the connection terminal fitting 10 is 4 pieces)
, and will be sent to the next crimping process. Below, I,
Steps ii...■ are sequentially repeated to obtain a wire harness C in which the connecting terminal fittings 10 are crimped at each wire end, as shown in FIG.

Next, by attaching connectors to each part of the connecting 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 wiring control on the main body of the wiring head. In a wire harness manufacturing device in which a wire harness is installed and wires are routed and cut at the same time, the wire clamp claw has a front end clamp plate and a rear end clamp plate that engage with the wire clamp claw provided on the wiring board. The wire clamp plate is placed in a symmetrical position with respect to the wire cutting blade, and is configured to be movable vertically and horizontally around the wiring jig, so that the wire end always leaves a constant length. It can be locked and cut, making the wiring and cutting operations of electric wires continuous, thereby making it possible to significantly reduce the time and labor required for manufacturing wire harnesses.

[Brief explanation of drawings]

The drawings show the implementation of the present invention, and FIGS. 1 to 4 are explanatory diagrams of each embodiment at the time of assembling the wire harness, FIG. 5 is an overview perspective view of the wiring device, and 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 a side view of the wiring head 15. 11 is an enlarged side view of the clamp jig 45, FIG. 11 is a perspective view of the wiring table 3, FIG. 12 is an explanatory diagram showing the mutual relationship between the wiring table 3 and the wiring jig 2, and the clamp jig 45. Fig. 13 is an explanatory diagram of the wiring process, Fig. 14 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 electric wire welding process, and Fig. 16 is an explanatory diagram of the wire sheath removal. FIG. 17 is a perspective view showing the entire terminal fitting attachment device, and FIG. 17 is an explanatory diagram of the coating removal, cutting, and terminal fitting attachment steps. 1... Working table, 3... Wiring table, 15.
...Wiring head, 24...Wiring jig, 4
5...Clamp jig, 46...Clamp plate for front end, 48...Cutting blade, 49...
・Clamp plate for rear end.

Claims (1)

[Claims] 1 Place a wiring stand for securing the wires on the workbench, provide a wiring head that runs on the workbench, attach a wiring jig to the main body of the wiring head, and wire the wires. In a wire harness manufacturing device that performs wiring and cutting 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 are provided at symmetrical positions with respect to the wire cutting blade. A clamping jig for electric wires, characterized in that the jig is configured to be movable vertically and horizontally around the wiring jig.