JP2000173369A - Each terminal independent carrying device for wires in manufacture of wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently manufacture wire harness by speedily carrying wires to an insulation displacement contact part with a connector. SOLUTION: At the time of pressing one end A and the other end B of a wire harness into each terminal of a connector, the wire is carried from a wire supply part 2 to a wire insulation displacement contact part 4 by two chucks 32, 33 corresponding to each end A, B. Arms 30, 31 for supporting the chucks 32, 33 are simultaneously turned in opposite directions to each other by the same driving source so as to shorten the interval of the insulation displacement contact operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire transport device for independently transporting both ends of an electric wire to an electric wire press-fitting portion when manufacturing a wire harness.

[0002]

2. Description of the Related Art FIG. 7 shows an example of an automobile wire harness in which connectors are attached to both ends of parallel electric wires. In this wire harness, eight wires a are connected to one connector C at one end (hereinafter, referred to as A end), and four wires a are respectively connected to two connectors C at the other end (hereinafter, referred to as B end). It is connected.

[0003] As means for connecting the electric wire a to the connector C, a press contact connection as shown in FIG. 8 is adopted in consideration of workability and the like. In this press-fit connection, the wire a is pushed down into the groove 60 of the press-connecting terminal T provided in each connector C by the press-contact blade S, and the coating 62 surrounding the conductor bundle 61 of the wire a is attached to the end of the groove 60 with the press-fitting. The conductor bundle 61, which is cut at the edge and exposed, is brought into contact with the pressure contact terminal T, and
The wire a is held in the groove 60 by the springback of the above. Then, after press-fitting the electric wire a into the press contact terminal T, as shown in FIG. 9, the terminal cover L is put on the connector C to prevent the electric wire a from coming out.

[0004]

By the way, as an apparatus for automatically manufacturing the above-mentioned wire harness, an apparatus which grasps an end of an electric wire with a chuck and conveys the electric wire to an electric wire press-contact portion having a press-contact blade is considered. I have.

However, in this apparatus, when each end of the electric wire is conveyed by one chuck, it takes a lot of time to reciprocate the chuck, the interval of the pressing operation becomes long, and efficient production cannot be performed. There is a problem.

Accordingly, an object of the present invention is to speedily transport an electric wire to a press contact portion to improve production efficiency.

[0007]

In order to solve the above problems, the present invention conveys each end of an electric wire corresponding to both ends of a wire harness from an electric wire supply portion to an electric wire pressure contact portion by two independent chucks. By overlapping the reciprocating operations of these two chucks, the interval of the pressing operation can be shortened.

In this case, if the arms supporting the chucks are simultaneously turned in the opposite direction by the same driving source, the time required for the reciprocation of the chucks can be minimized and the structure can be simplified. .

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a wire harness manufacturing apparatus according to an embodiment of the present invention;

As shown in FIG. 1, this wire harness manufacturing apparatus includes a pallet feeder 1, an electric wire supplier 2, an electric wire setter 3, a press-welding head (wire presser) 4, and a cover mounting part 5. ing.

The pallet feeder 1 receives upper and lower guide rails 10a and 10b for guiding a pallet P in which a plurality of connectors C are juxtaposed, and receives the pallet P between the guide rails 10a and 10b located on both sides thereof. Two lifting platforms 11a and 11b to be passed, and two carriages 12 for moving the pallet P along the guide rail 10a or 10b.
a and 12b. The carriage 12 a is screwed into the screw shaft 13 in a ball screw structure, and the carriage 12 a
b is fixed to an endless belt 14 stretched over a pair of pulleys, and travels with the driving of the servo motors 15 and 16, respectively.

As shown in FIGS. 1 and 2, the electric wire supply unit 2 includes two pairs of rollers 20 which come and go, and an elevating body 21 which raises and lowers a large number of electric wires a to be routed vertically. With the operation of the elevating body 21, the wire a to be pressed next is positioned at the level of the roller 20, and the wire a is nipped by the pair of rotating rollers 20 and fed out by a required length. In front of the electric wire supply unit 2, scissors 22 that advance and retreat with respect to the delivery hole of the electric wire a, and a support bar 23 that can move up and down are provided.

As shown in FIGS. 1 and 3, the electric wire setting section 3 has two revolving arms 30 and 31, and the ends of the revolving arms 30 and 31 have the A end and the B end of the electric wire a, respectively.
An A-end chuck 32 and a B-end chuck 33 for gripping the ends are provided. The turning arms 30 and 31 are meshed with gears 34 and 35 at their base ends, and are simultaneously turned in opposite directions by the same driving motor 36. At the time of this turning, the tip portions of the turning arms 30, 31 pass through different trajectories,
The A-end chuck 32 and the B-end chuck 33 do not interfere with each other. Here, a link 37 which forms a parallel crank mechanism together with the turning arm 31 is connected to one side of the B-end chuck 33 so that the B-end chuck 33 always faces in the same direction.

As shown in FIGS. 1, 4 and 5, the pressing head 4 is driven by a
The screw shaft 42 is rotated via the screw shaft 42 to raise and lower the press contact blade S provided at the lower end of the lifting rod 43 screwed to the screw shaft 42 with a ball screw structure, and the A-end chuck 32 or This pushes down the B-end chuck 33. The press-contact head section 4 is provided with a linear scale 44 for detecting the height of the elevating rod 43 from a reference position, and a load cell 45 for detecting a reaction force of the press-contact blade S.

Below the press-contact head 4, there is provided a line habit correcting device 46. This line habit correcting device 46
Is a wire habit correcting chuck 4 that moves back and forth by grasping the end of the electric wire a protruding from the A-end chuck 32 or the B-end chuck 33.
7 and its open / close sensor (not shown).

As shown in FIGS. 1 and 6, the cover mounting portion 5 includes a cover gripping chuck 50 which moves up and down and moves back and forth by driving a cylinder or the like.
Is provided with a linear scale 51 for detecting the height of the cover gripping chuck 50 from the reference position.

Now, for example, in order to manufacture a wire harness as shown in FIG. 7 using the above-described wire harness manufacturing apparatus, it is necessary to place the A-end of the wire harness on the pallet P on the lift 11b at the ascending position. And the three connectors C and the terminal covers L corresponding to the ends B and B are arranged side by side, and the elevator 11b is lowered.
As the vehicle travels 2b, it is fed into the lift 11a at the lower position via the guide rail 10b.

Then, the carriage 12b and the pallet P
, The carriage 12a is engaged with the pallet P, and the pallet P is moved on the guide rail 10a along with the traveling, and the connector C which first presses the electric wire a is pressed. Terminal T of the pressure welding head 4
Is positioned below the press-contact blade S. This positioning is performed by a preset program.

Next, the first electric wire a set in advance by the program is sent out a little from the electric wire supply unit 2, and the leading end is set to A.
While holding the end chuck 32 (see FIG. 3 (a)), while further sending out the electric wire a, the turning arm 30 is turned to position the A-end chuck 32 in front of the press-contact head section 4 (see FIG. 3 (b)). ].

Then, the feeding of the electric wire a is stopped, and as shown in FIGS.
Is pinched by a wire habit correcting chuck 46, and the chuck 46 is retracted while sliding in the pulling direction along the coating surface of the electric wire a to correct the bending habit of the electric wire a into a linear state.

At this time, the wire habit correcting chuck 46 is connected to the electric wire a.
Is detected by an open / close sensor to determine whether the margin of the wire a is sufficient or insufficient for the pressure welding by a program.

Subsequently, the press-contact blade S of the press-contact head 4 is lowered together with the A-end chuck 32, and the front end of the electric wire a is pressed into the groove of the terminal T of the predetermined connector C. This press-fit height is
The optimum value is set in advance by the control program of the servomotor 40. The press-fitting height is measured by the linear scale 44, and the press-fitting resistance is measured by the load cell 45, and the quality of the press-fitting state is determined by a program.

On the other hand, in parallel with this pressure welding,
While supporting the electric wire a that is stationary in front of the support bar 23 with the support bar 23, the electric wire a is gripped by the B-end chuck 33, and the scissors 22 are advanced.
The electric wire a is cut to a required length behind the B-end chuck 33 (see FIG. 3B).

After completion of the pressing at the end A, the swing arm 3
1 is rotated to position the B-end chuck 33 in front of the press-contact head unit 4 and the electric wire a
Is released, the turning arm 30 is turned simultaneously with the turning arm 31 in the opposite direction, and the A-end chuck 32 is positioned in front of the wire supply unit 2 (see FIG. 3A). Further, the pallet P is moved in accordance with the setting of the program, and the terminal T of the connector C at the B end for pressing the electric wire a is positioned below the pressing blade S of the pressing head portion 4.

Next, the press-contact blade S of the press-contact head section 4 is lowered together with the B-end chuck 33, and the rear end of the electric wire a is press-fitted into the groove of the terminal T of the predetermined connector C at the B end. The press-fitting height is also set to an optimum value in advance by the control program of the servo motor 40 in the same manner as the A-end side, and at the time of press-fitting, the press-fitting height is measured by the linear scale 44 and the press-fitting resistance is measured by the load cell 45, respectively. The quality of the press-fit state is determined by a program.

During the press-contact at the end B, the wire supply unit 2 performs an operation of sending out the wire a to be pressed next, and by repeating the press-contact operation described above for all the wires a, as shown in FIG. Routing is completed.

Thereafter, the pallet P and the carriage 12a
Is disengaged, the carriage 12b is engaged with the pallet P instead, and the pallet P is moved below the cover mounting portion 5.

Then, as shown in FIG.
Is gripped by the cover gripping chuck 50, lifted, and moved forward to cover the corresponding connector C. When this operation is sequentially performed for each connector C, the wire harness is completed.

Here, when the terminal cover L is mounted, the height of the terminal cover L from the connector C is set to the linear scale 51.
Measurement, compare the value with the allowable value with a program,
The quality of the mounted state is determined. Then, only good products are shipped as products.

After press-fitting the wire a, prior to mounting the terminal cover L, the press-fitting height of the wire a is measured by a laser sensor, and the press-fitting height of all the wires a is set to the connector C within the allowable tolerance. If only the terminal cover L is covered, it is possible to save the trouble of removing the terminal cover L when repairing a product having poor press contact.

[0031]

As described above, according to the present invention, each end of the wire corresponding to both ends of the wire harness is transported from the wire supply section to the wire pressure contact section by two independent chucks. By overlapping the reciprocating operations of these two chucks, the interval of the pressing operation can be shortened, and the wire harness can be manufactured efficiently.

In this case, if the arms supporting the chucks are simultaneously turned in the opposite direction by the same drive source, the time required for the reciprocation of the chucks can be minimized and the structure can be simplified. .

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

FIG. 2 is a schematic perspective view of an electric wire supply unit according to the embodiment.

FIG. 3 (a) is a plan view showing one state of the electric wire set part of the above, and (b) is a plan view showing another state of the same.

FIG. 4 is a right side view of a lower part of the press-contact head unit according to the first embodiment.

FIG. 5 is a schematic perspective view showing the operation of the linear habit correcting chuck of the above.

FIG. 6 is a schematic perspective view showing the operation of the cover mounting unit according to the embodiment.

FIG. 7 is a schematic plan view showing an example of a wire harness.

FIG. 8 is a perspective view showing electric wire pressure welding to a connector terminal.

FIG. 9 is a perspective view of a connector with a terminal cover attached.

[Explanation of symbols]

 Reference Signs List 1 Pallet feed unit 2 Electric wire supply unit 3 Electric wire setting unit 4 Pressure welding head unit (electric wire pressure welding unit) 5 Cover mounting unit 32 A-end chuck 33 B-end chuck 47 Straightening chuck 50 Cover gripping chuck S Pressure contact blade C connector L Terminal cover a Electric wire P pallet

 ────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Toshio Yoneya 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi Harness Research Institute F-term (reference) 5E051 JA01 JB03

Claims (2)

[Claims] 1. When both ends of a wire harness are set to an A end and the other is set to a B end, when press-fitting an electric wire into a connector terminal at each of the A and B ends, the electric wire is supplied from the electric wire supply portion to the electric wire pressure contact portion. An end-to-end independent electric wire transfer device in wire harness manufacturing, wherein the transfer is performed by two chucks respectively corresponding to each end of A and B. 2. The arm supporting the chucks at each of the ends A and B is simultaneously turned in the opposite direction between the wire supply part and the wire pressure contact part by the same drive source.
4. Each end independent electric wire conveying device in the wire harness manufacturing according to 4.