JPH02242534A - Electric wire positioning method in harness manufacturing apparatus - Google Patents

Abstract

PURPOSE:To make it possible to the minimum cutting size of an electric wire small by positioning a pair of cutters so as to pinch supplied electric wires. CONSTITUTION:A pair of cutters 100, 100 are placed face to face each other while having electric wire sending lines between them, supported movably up and down directions by a cutter main body, and each tip blade part is finished in V-shape in the position responding to the each electric wire sending line. After electric wires are sent from a first clamp 200 to a second clamp 300 while the pair of the V-shaped cutters are fully opened, the V-shaped cutters are moved to be half opened, and the electric wires are positioned in the sending lines with the tips of the V-shaped cutters in a way just like to pinch the electric wires from both side. By this way, minimum cutting size of an electric wire can be made small and the electric wire can be positioned precisely.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a wire positioning method in a harness manufacturing apparatus in which a pair of V-shaped cutters performs a cutting process on the wire.

(Prior art and its problems) FIG. 11 is a perspective view of a main part of a conventional harness manufacturing apparatus. As shown in the figure, along the wire feed line
clamp], cutter group 2. A guide member 3 and a second clamp 4 are arranged.

The first clamp 1 is configured to be able to hold and release the electric wire 10 and to be movable in the left-right direction indicated by arrow R8 in the figure, which is orthogonal to the wire feed line X.

The cutter group 2 includes a set of two cutting cutters 2a and a set of two cutting cutters 2 disposed before and after the cutting cutter 2a.
b, 2b, and each of these cutters 2a, 2b, 2
By integrally moving the electric wires 10 and 2b to sandwich the electric wire 10 placed on the electric wire feeding line It is configured to make an incision in the covering part of.

In addition, in the guide member 3, the inner peripheral surface of the guide hole 3a is finished as a tapered guide surface, so that the tip of the electric wire 10 fed along the direction of the arrow P is slightly away from the wire feeding line X. Even if the wire is fed with a misalignment, the tip thereof is guided along the inner circumferential surface of the guide hole 3a and guided onto the wire feeding line X.

The second clamp 4 includes an arm 4a and a pair of clamp claws 4b that are provided at one end of the arm 4a and can be opened and closed. Further, the second clamp 4 is rotatable in the directions of arrows A and B in a plane orthogonal to the wire feeding line X using the other end 4C of the arm 4a as a fulcrum, and in the axial direction of the rotation axis of the other end 4c. In other words, it is configured to be movable along the wire feeding line X.

In this harness manufacturing apparatus, when the electric wire 10 is released from being held by the first clamp, the electric wire 10 passes through the guide hole 3a of the guide member 3 by the electric wire feeding means (not shown), as shown by the imaginary line in the figure. In this way, it is fed by a predetermined amount ( ) \ - length dimension amount of ness) in the direction of arrow P. Next, the electric wires 10 are each held by both clamps 1.4, and the cutter group 2 pinches the electric wire 10, and the cutting cutter 2a cuts the electric wire 10, and the cutting cutter 2a cuts the electric wire 10 at the front and rear positions. The covering portion of the electric wire 10 is cut by 2b2b. In this dog position, move back a predetermined amount in the opposite direction to the first clamp]
The covering part of the downstream end of the remaining electric wire 10 held by the clamp 1 is stripped off, and the second clamp 4 moves forward by a predetermined amount in the direction of arrow P, and the cut electric wire 10 held by the second clamp 4 is removed. The coating on the upstream end of the is stripped off. After that, the first clamp 1 moves in the direction of arrow R, and the remaining electric wire 1
Terminal 5 is crimped onto the stripped end of 0 by a terminal crimping machine (not shown), and first clamp 1 returns to the initial position shown in FIG. In parallel with this, the second clamp 4 rotates in the direction of arrow A, and a terminal (not shown) is attached to the upstream stripped end of the cut wire 1-0 by another terminal crimping machine (not shown). is crimped. The cut wire 10 with the terminal crimped thereon is transferred from the second clamp 4 to a discharge means (not shown) and discharged to a predetermined location, while the second clamp 4, which has finished delivering the cut wire to the discharge means, is transferred to the 1-1 Return to the initial position shown. Such operations are continuously repeated to sequentially manufacture harnesses having terminals crimped at both ends.

However, in conventional harness manufacturing equipment, the electric wire 10
Since the electric wire 10 is fed to the clamping position of the second clamp 4 by passing through the guide hole 3a of the guide member 3, the cutter group 2 and the second clamp 4
It is necessary to arrange the guide member 3 between the two. For this reason, the distance from the cutting position of the electric wire 10 to the gripping position by the second clamp 4 becomes long, and there is a problem that a harness having a dimension shorter than that distance cannot be manufactured, and the minimum cutting size of the electric wire becomes large.

(Objective of the Invention) An object of the present invention is to provide a wire positioning method in a harness manufacturing apparatus that solves the problems of the prior art described above, can reduce the minimum cutting dimension of the wire, and can accurately position the wire. .

(Means for Achieving the Object) The present invention grips an electric wire fed from a first clamp to a second clamp along an electric wire feeding line, and then places the electric wire between the two clamps. A wire positioning method in a harness manufacturing apparatus in which the electric wire is sandwiched between a pair of V-shaped cutters and cut. , after feeding the electric wire from the first clamp to the second clamp with the pair of V-shaped cutters fully open, the pair of V-shaped cutters are moved to a partially open state, and the pair of The electric wire is positioned on the feeding line by sandwiching the electric wire from both sides with the tip of the V-shaped cutter.

(Embodiment) FIG. 1 is a perspective view showing a harness manufacturing apparatus to which a wire positioning method according to an embodiment of the present invention is applied, and FIG. 2 is a side view thereof. As shown in both figures, this device is similar to the harness manufacturing device (1986) that was previously filed by the applicant.
The electric wire feeding means 50 that feeds two electric wires 600a and 600b, and a set of two cutters 100 and 100, each of which is movable in three-dimensional directions. and wires 600a and 6, respectively.
First and second clamps 20 that can grip and release 00b
0,300 and the first and second terminal crimping means 400,5
00 and a discharge means 550.

As shown in FIG. 2, the wire feeding means 50 includes a pair of conveying sections 51 and 51 located above and below with the wire feeding lines Xa and Xb in between.
is provided, and the re-conveying section 5151 is configured to be swingable about the rotation shafts of the length measuring rollers 52, 52 pivotally connected to one end of the re-conveying section 5151, respectively. Then, the reconveying section 51
．． Feed rollers 53 and 5 pivotally connected to the other end of 51, respectively.
When the electric wire feeding motor (not shown) is driven while the re-conveying section 51.51 is oscillated so as to sandwich the two electric wires 600a, 600b, both feeding rollers 5B, 53 are moved in opposite directions. direction, the two electric wires 600a, 60
0b simultaneously moves the arrow P along the wire feed lines Xa and Xb.
and is configured to be fed in the direction.

The first and second clamps 200 and 300 each have 3
It is provided so as to be movable in the dimensional direction. That is, the base 20
1 and 301, the left and right moving parts 202 and 302 are the first
They are supported so as to be movable in the left and right directions indicated by arrows R and S in the figure, and the left and right moving parts 202 and 302 have front and rear moving parts 203 and 303, respectively, which are movable in the front and rear directions as indicated by arrows P and Q in FIG. Each is supported by Furthermore, both clamps 200300 are attached to the front and rear moving parts 203 and 303, respectively.
is supported so as to be able to move up and down in the vertical direction shown by arrows T and U in FIG. Further, the left and right moving parts 202 and 302 are connected to the base 201.
．． Motors 204 and 304 respectively attached to 301
The power transmission mechanisms 204a, 304a are driven by
The front and back moving parts 203 and 303 are configured to move in the front and rear directions by being driven by motors (not shown). The second clamp 300 is the clamp 3
It is configured to move up and down in the vertical direction by driving cylinders 305, 305 disposed between the front and back moving unit 303 on one side.

FIG. 3 shows an enlarged perspective view of the main part of FIG. 1. As shown in FIGS. 1 to 3, the first clamp 200 includes electric wires 600a, which are fed along electric wire feeding lines Xa and Xb,
Wire insertion holes 210 and 21 through which 600b can be inserted, respectively.
0 (see Figure 3), and its insertion hole 21
．． It is configured so that the electric wires 600a and 600b passing through 0.210 can be gripped and released, respectively.

The second clamp 300 has two abbreviated fixing claws 306, 306 arranged opposite to each other and corresponding to the two electric wires 600a600b, and wires are fed to the horizontal portions of the fixing claws 306, 306, respectively. It has movable claws 307 and 307 which are respectively attached to be movable forward and backward in the left and right directions perpendicular to the lines Xa and Xb, and cylinders 308 and 308 for driving the movable claws 307 and 307 forward and backward, respectively. Electric wires 600 are connected between the vertical parts of the fixed claws 306, 306 and the movable claws 307, 307, respectively.
With cylinders a and 600b arranged, cylinders 308 and 30
8, when the movable claws 307307 move forward, the fixed claws 306306 and the movable claws 307, 307 grip the electric wires 600a, 600b, and when the movable claws 307, 307 move back, the electric wires 600a6
00b is configured to be released from the grip.

A set of two cutters 100, 100 are supported by a cutter body 101 so as to be movable in the vertical direction while facing each other with the wire feeding lines Xa, Xb in between.

Further, each tip end portion of the cutter 100° 1-00 is finished into a V-shape at a position corresponding to each wire feeding line Xa, Xb. Also, cutter 100
, 100 are connected to a driving means via a link mechanism (not shown), and the cutters 100, 100 are opened and closed so as to approach and separate from the wire feeding lines Xa and Xb, respectively, by driving the driving means. However, the cutter 100.degree. 100 is configured to be able to stop at any vertical position depending on the amount of drive of the drive means.

As shown in FIGS. 1 and 2, the ejection means 550 includes:
A pillar 551 and arrows R and S fixed to the upper end of the pillar 551.
A rail 552 arranged along the left-right direction shown in FIG.
Equipped with. The discharge clamp 553 is configured to be moved left and right by a drive means (not shown), and is configured to simultaneously grip and release two cut wires, which will be described later.

Further, in this harness manufacturing apparatus, each of the above-mentioned driving sections is connected to a control means (not shown), and the driving of each of the above-mentioned driving sections is controlled based on an output signal from the control means, which will be explained below. An action similar to that is performed.

Next, the operation of this harness manufacturing apparatus will be explained based on the flowchart shown in FIG. Note that the first and second clamps 200300 are in a state where they have released their grip on the electric wires 600a and 600b, respectively, before starting the operation, and the ejection clamp 553 of the ejection means 550 is moved in the right direction as shown by arrow R in FIG. The wire is released at the moved position.

Further, the cutters 100, 100 are in a fully open state. From this state, the pair of conveying sections 5]51 of the wire feeding means 50
The electric wires 600a and 600b are fed by a predetermined amount (the length of the harness) along the feeding lines Xa and Xb in the direction of the arrow P while being sandwiched between them (step Sl). next,
As shown in step S2, the upstream side of the electric wire 600a600b in the wire feeding direction P near the area to be cut is gripped by the first clamp 200, and the downstream side is gripped by the second clamp 300. Next, as shown in step S3, the pair of cutters 100, 100 transitions to a fully closed state, and the electric wire 600a,
600b is cut and the remaining electric wires 600a and 600b held by the first clamp 200 and the second clamp 30
0 (cutting process). Subsequently, after the pair of cutters 100.1.00 return to the fully open state, as shown in step S4, the first clamp 200 moves forward by a small amount in the direction of arrow P, and the cutter 100.
0.100 is shifted to a slightly open state and two remaining electric wires 60
The covering part on the downstream side of 0a and 600b is cutter 100.10
Cut by 0. Then, in that cutting state, the first
The clamp 200 moves back in the direction of the arrow Q, and the downstream coating portions of the two remaining electric wires 600a and 600b are stripped off (first coating stripping process). Next, cutter 10
0,100 returns to the fully open state again, and step S
5, the first clamp 200 moves in the direction of arrow R perpendicular to the feed lines Xa and Xb, and the first terminal crimping means 400 attaches the terminals 602 to the upstream stripped ends of the two remaining electric wires 600a and 60ob. , 602 (Fig. 3) are crimped (first terminal crimping process). Then the first clamp 20
0 moves in the direction of arrow S and returns to the original position shown in FIGS. 1 to 3. On the other hand, as shown in step S9, the first
While the terminal crimping process (step S5) is being executed, the second clamp 300 moves back a small amount in the direction of the arrow Q, and the cutters 100, 100 shift to a slightly open state to close the upstream covered portion of the cut wire. are respectively cut by a cutter 100°100. Then, the second clamp 3 remains in that cutting state.
00 moves forward in the direction of arrow P, and the upstream coating portions of the two cut wires are stripped off (second coating stripping process). Next, the cutter 100.100 returns to the fully open state again, and
In step S10, the second clamp 300 moves to the left as indicated by the arrow S, and the second terminal crimping means 500
A terminal is crimped onto the upstream stripped end of the cut wire. Thereafter, in step S 1 ], the cut wire is held by the discharge clamp 553, and the second clamp 300
The grip on the cut electric wire is released, and after the discharge clamp 553 moves to the left as shown by arrow S along the rail 552, the grip on the cut electric wire is released. In this way, the cut wires (hanes) having the terminals 602 crimped at both ends are discharged to a wire discharge section (not shown) (discharge process).

On the other hand, while the second terminal crimping process (step 510) and the discharge process (step 511) are being performed, the first clamp 200 is connected to the electric wires 600a, 600 in step S6.
In step S7, as shown in FIG. 5, the wires 600a and 600b are
(Only one side is shown in the figure. Figures 6 to 10
The same applies to figures. ) is started in the direction of arrow P, and as shown in FIG. 6, the feeding is stopped at a position where a predetermined amount has been fed. Next, in step S8, as shown in the imaginary line in FIG. 3 and in FIG. 6, the cutter code 00 is cut.

] The cutter 100° 100 shifts from the fully open state to the mid-open state so that the ends of the wires 600a and 600b are surrounded by the ends of the cutters 100 and 600b. At this time, the electric wire 600
If the electric wire 600a or 600b deviates from the respective electric wire feeding lines Xa or Xb in the circumferential direction due to bending or bending due to its own weight, the electric wire 600a.

The body of the wire 600b is pushed by the tip of the cutter 1.00, 100 and returned to the direction of each wire feeding line Xa, Xb, thus positioning the wires 600a, 600b.

On the other hand, the second
The clamp 300 once descends downward as shown by arrow U, and moves back a small amount in the direction shown by arrow Q, while moving to the right as shown by arrow R, as shown in FIGS. 1 to 3. At a position closer to the cutter 100100 than the original position,
And it moves further below than the cutter 100.100. Then, from that position, as shown in FIG.
The space between the fixed claw 306 and the movable claw 307 (hereinafter referred to as 1)
Electric wire 600a 600
b are respectively accommodated. In this case, as mentioned above,
The electric wires 600a and 600b are almost connected to the electric wire feeding lines Xa and Xb by the cutters 1.00 and 100 which have shifted to the mid-open state.
Since the electric wires 600a and 600b are positioned above the second clamp 300, the electric wires 600a and 600b are reliably accommodated within the gripperable space of the second clamp 300. Moreover, since the second clamp 300 accommodates the electric wires 600a and 600b within the gripping allowable space at a position closer to the cutter 100.1.00 than the initial position shown in FIG. will be carried out more reliably.

Thereafter, as shown in FIG. 8, the second clamp 300 grips the electric wire 600a within its gripping allowable space.

600b is accommodated in the direction of arrow P, and after moving to the initial position shown in FIG. 3, as shown in FIG. are grasped respectively (step 5
12).

Next, as shown in Fig. 10, cutter 100°100
transitions from the middle open state to the closed state, and the electric wires 60Qa and 600
b is cut (step 813).

Thereafter, after the cutters 100, 100 return to the fully open state, the process returns to step S4 and the above-described operations are repeated. In this way, two harnesses each having the terminals 602 crimped at both ends are manufactured one after another.

According to this wire positioning method, the wire 600a fed from the first clamp 200 to the second clamp 300
, 600b are positioned so as to be surrounded by the tips of the cutters 100, 100 for performing cutting, peeling, etc., so that the cutters 100, 10
0 and the second clamp 300, there is no need to arrange a guide member for positioning the electric wire as in the conventional case. As a result, the electric wires 600a and 6oob by the second clamp 300
Since the gripping position of the electric wires 600a and 600b can be moved closer to the cutters 100 and 100, the distance from the cutting position of the electric wires 600a and 600b to the gripping position of the second clamp 300 can be set short, and the minimum cutting dimension of the electric wire can be reduced. . Furthermore, by omitting the guide member, the number of parts is reduced, the structure of the peripheral portion of the cutter 1.00, 100 is simplified, and maintenance work for the peripheral portion is also facilitated.

(Effects of the Invention) As described above, according to the wire positioning method in the harness manufacturing apparatus of the present invention, the wires fed from the first clamp to the second clamp are connected to a pair of wires for cutting, etc. Since positioning is performed by sandwiching the wire with the cutter, there is no need to place a guide member for positioning the wire between the cutter and the second clamp, and the distance between the cutting position of the wire and the gripping position of the second clamp is eliminated. Since the length can be set short, it is possible to obtain the effect that the minimum cutting dimension of the electric wire can be made small.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a harness manufacturing apparatus to which a wire positioning method according to an embodiment of the present invention is applied, Fig. 2 is a side view thereof, Fig. 3 is a perspective view of the main parts thereof, and Fig. 4 is its A flowchart for explaining the operation of a harness manufacturing apparatus to which one embodiment is applied, FIGS. 5 to 10 are side sectional views for explaining the operation, and FIG. 11 shows a conventional harness manufacturing apparatus. FIG. DESCRIPTION OF SYMBOLS 100... Cutter 200... First clamp, 300... Second clamp, 600 a, 600 b-electrical wire, Xa, Xb... electric wire feeding line

Claims (1)

[Claims] (1) After gripping the electric wire fed from the first clamp to the second clamp along the electric wire feeding line with both clamps, the electric wire is held with a pair of V-shaped cutters arranged between the two clamps. In the harness manufacturing apparatus, the cutting process is performed by sandwiching the clamps, and the clamps are released from the grip, and the pair of V-shaped cutters are fully opened, and the cutters are directed from the first clamp toward the second clamp. After feeding the electric wire, move the pair of V-shaped cutters to a middle-open state, and place the electric wire onto the feeding line by sandwiching the electric wire from both sides with the tips of the pair of V-shaped cutters. A wire positioning method characterized by positioning.