JPH0785615B2 - Harness manufacturing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a harness manufacturing apparatus that has a strip function for an intermediate portion of an electric wire in addition to an end portion treatment of the electric wire.

(Prior Art) FIG. 22 is a schematic side view showing a conventional harness manufacturing apparatus, FIG.
The figure is a perspective view of the main part. This harness manufacturing device
This is an apparatus for sequentially manufacturing a harness in which the coating portions at both ends are stripped off and terminals are crimped to the stripped ends.

As shown in both figures, along the electric wire feeding line X, the electric wire feeding means 1, the first clamp 2 that can hold and release the electric wire 10, the cutter 3, and the second clamp 4 that can hold and release the electric wire 10.
Are sequentially arranged in this order.

In this apparatus, the electric wire 10 is first fed in the arrow P direction along the electric wire feeding line X by the electric wire feeding means 1 in a state where the holding of the electric wire 10 by the first clamp 2 is released. Subsequently, the electric wire 10 is grasped by both clamps 2 and 4, and then the electric wire 10 is cut by the cutter 3. Next, the first clamp 2 is advanced by a predetermined amount in the arrow P direction, and the covering portion of the residual electric wire 10 grasped by the first clamp 2 on the downstream side with respect to the electric wire feeding direction P is cut by the cutter 3, and in that state. First clamp 2
Is retracted, the covering portion at the downstream end of the residual electric wire 10 is peeled off. After that, the first clamp 2 is moved in the horizontal direction (shown by the arrow R in FIG. 23) orthogonal to the electric wire feeding line X, and the residual electric wire 10 is pressed by the terminal crimping means (not shown).
The terminal 6 is crimped to the downstream stripped end of the
Return to the original position shown in Figures and 23.

On the other hand, while the terminal 6 is crimped to the residual electric wire 10, the second clamp 4 is retracted in the arrow Q direction by a predetermined amount and the covering portion on the upstream side with respect to the electric wire feeding direction P of the cut electric wire gripped by the second clamp 4. Is cut by the cutter 3 and the arrow P
By advancing in the direction, the coating portion on the upstream side of the cut electric wire is peeled off. After that, the second clamp 4 is moved in the horizontal direction shown by the arrow S, and the terminal is crimped to the upstream stripping end of the cut wire by the terminal crimping means (not shown). Subsequently, the cut electric wire (harness) is delivered from the second clamp 4 to an ejection means (not shown) and ejected to a predetermined location.

On the other hand, the second clamp 4 returns to the original position shown in FIGS. 22 and 23 after delivering the cut wire to the discharging means. Such an operation is continuously repeated to sequentially manufacture a harness in which terminals are crimped at both ends.

(Problems to be Solved by the Invention) By the way, there are many kinds of harnesses, and one of them is a harness 11 as shown in FIG. In this harness 11, the coating portions on both ends are stripped off, and the terminals 12, 12 are crimped to the stripped end portions, respectively, while the core strip 13 is exposed to the outside in the central region.
Are formed.

In order to manufacture such a harness 11 with the above-mentioned conventional harness manufacturing apparatus, for example, the following procedure can be considered. Since the stripping process and the terminal crimping process on both ends of the harness 11 are performed in the same procedure as the above-mentioned operation, only the procedure for forming the intermediate strip region 14 will be described below.

That is, as shown in FIG. 25, the electric wire 10 is grasped by both clamps 2 and 4, and the cutter 3 is cut into the covering portion of the electric wire 10 at the substantially central position of the intermediate strip planned region. While keeping the cut state, as shown in Fig. 26, both clamps 2, 4
Are moved in the direction of arrow P to advance the electric wire 10 along its longitudinal direction. Subsequently, as shown in FIG. 27, both clamps 2 and 4 are moved in the arrow Q direction to retract the electric wire 10 along its longitudinal direction. As a result, the covering portions of the intermediate strip planned region are compressed back and forth to form the intermediate strip region 14 in which the core wire 13 is exposed.

As described above, in the conventional harness manufacturing apparatus, when the intermediate strip region 14 is formed, the covering portion of the intermediate strip planned region of the electric wire 10 is compressed back and forth.
The covering portion elastically restores with the passage of time, and the exposed dimension in the longitudinal direction of the core wire 13 of the intermediate strip area 14 (hereinafter referred to as "core wire exposed dimension") becomes smaller over time, resulting in the core wire exposed dimension of the intermediate strip area 14. There was a problem of variation.

(Object of the Invention) The present invention has been made based on the above viewpoint, and an object of the present invention is to provide a harness manufacturing apparatus capable of performing an intermediate strip process without causing variations in the exposed dimensions of the core wire.

(Means for Achieving the Purpose) The present invention relates to an electric wire feeding means for feeding an electric wire along an electric wire feeding line, and a virtual plane including the electric wire feeding line in a state where the electric wire is clamped. First and second clamp means movable in the electric wire feeding line direction and laterally of the electric wire feeding line, and the first and second clamp means in the electric wire feeding line direction and the electric wire feeding line. A moving means for moving to the side and a pair of cutting / cutting cutters for cutting the electric wire clamped by the first and second clamping means or for making a notch in the circumferential direction of the electric wire in its covering portion. A wire is installed in parallel with the cutting / cutting cutter on the side of the wire feeding line, and cuts in the longitudinal direction of the wire in the covering portion of the wire clamped by the first and second clamping means. A cutting cutter that inserts a slit and a front and a rear of an intermediate strip area of the electric wire transferred by the electric wire feeding means are respectively gripped by the both clamping means, and the moving means moves the clamping means to the cutting / cutting cutter side. The cutting / cutting cutter, and the cutting control means for making cuts in the covering portions on one end side and the other end side of the intermediate strip area of the electric wire by the cutting / cutting cutter, and the front and rear sides of the intermediate strip area of the electric wire. Both clamp means are moved to the tear cutter side by the moving means, and the both clamp means are moved by the moving means in a state where the tear cutter is cut into the covering portion on one end side of the intermediate strip region. By moving along the longitudinal direction of
A cutting control means for forming a slit-shaped cut groove is provided from one end side to the other end side of the intermediate strip region.

(Embodiment) FIG. 1 is a perspective view showing a harness manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. is there. As shown in these figures, this device is almost composed of a harness manufacturing device (patent application No. 106014 of 1988) already filed by the applicant of the present application, and two electric wires 600a and 600b are intermittently formed at the same time. Wire feeding means 50 for automatically feeding and the cutter portion 10
0, the first and second clamp means 250 and 350 that can move in three-dimensional directions and can hold and release the electric wires 600a and 600b respectively
, First and second terminal crimping means 400, 500, and discharging means 5
With 50.

The electric wire feeding means 50 is provided with a pair of upper and lower conveying parts 51, 51 sandwiching the electric wire feeding lines Xa, Xb, and both lengths of the conveying parts 51, 51 are connected to one end of the length measuring roller. 52,
It is configured so as to be swingable about a rotation axis of 52. Then, the electric wires are swung so that the two electric wires 600a, 600b are sandwiched by the feeding rollers 53, 53 pivotally connected to the other ends of the electric wires 51, 51, respectively. Feed motor 60 (3rd
When the drawing) is driven, both feeding rollers 53, 53 rotate in mutually opposite directions, and the two electric wires 600a, 600b are simultaneously fed in the arrow P direction along the electric wire feeding lines Xa, Xb. Is configured to.

The first and second clamping means 250 and 350 are respectively provided with an electric wire 6
First and second clamps 20 that can hold and release 00a and 600b
0,300 and first and second clamps 200,300 respectively 3
It has first and second clamp moving means 251, 351 which are movably supported in the dimensional direction. In the first and second clamp moving means 251, 351, the left and right moving parts 202, 302 are supported by the bases 201, 301 so as to be movable in the left and right directions indicated by the arrows R, S, and the left and right moving parts 202, 302 are respectively provided with the front and rear moving parts 203, 303. It is movably supported in the front-rear direction indicated by arrows P and Q, respectively. Further, the first and second clamps 200, 300 are supported by the front-rear moving parts 203, 303 so as to be able to move up and down in the vertical direction indicated by the arrows T, U. In addition, the left and right moving units 202, 302
Is configured to move in the left-right direction via power transmission mechanisms 204a and 304a when driven by motors 204 and 304 attached to bases 201 and 301, respectively. Further, the front-rear moving units 203 and 303 are configured to move in the front-rear direction by driving a motor (not shown). Also,
The second clamp 300 is configured to move up and down in the vertical direction by driving the cylinders 305, 305 arranged between the clamp 300 and the front-rear moving unit 303 on one side.

As shown in FIG. 4, the first clamp 200 is formed with electric wire insertion holes 210, 210 through which electric wires 600a, 600b fed along the electric wire feeding lines Xa, Xb can be inserted, respectively. The electric wires 600a and 600b passing through the insertion holes 210 and 210 can be grasped and released, respectively.

The second clamp 300 corresponds to the two electric wires 600a and 600b, respectively, and has two substantially L-shaped fixed claws arranged to face each other.
306, 306, movable claws 307, 307 mounted on the horizontal portions of the fixed claws 306, 306 so as to be movable back and forth in the right and left directions orthogonal to the electric wire feeding lines Xa, Xb, and cylinders 308, 308 for driving the movable claws 307, 307 forward and backward, respectively. And have. Then, when the movable claws 307, 307 are respectively advanced by driving the cylinders 308, 308 with the electric wires 600a, 600b arranged between the vertical portions of the fixed claws 306, 306 and the movable claws 307, 307, respectively, the fixed claws 306, 306 and the movable claws 307, 307 are moved. The electric wires 600a and 600b are respectively gripped by the movable claw 3
When 07 and 307 are retracted, the electric wires 600a and 600b are released from their gripping.

FIG. 5 shows a front view of the cutter unit 100. As shown in the figure, the cutter unit 100 includes a cutter body 101 having a wire insertion opening 102 formed in the center, and a pair of cutting / cutting cutters vertically arranged with the wire feeding lines Xa and Xb interposed therebetween. 103,10
3, a first driving unit 104 for driving the cutting / cutting cutters 103, 103 to open and close, and a pair of upper and lower slitting cutters 153, 153 arranged side by side with the cutting / cutting cutters 103, 103.
And a second drive unit 154 for driving the split cutter 153 to open and close.

The ball screw 105 of the first driving unit 104 has a right-hand threaded region 105a engraved on the outer periphery of the upper portion and a left-handed screw region 105b engraved on the outer periphery of the lower portion. The ball screw 105 is rotatably supported by the cutter body 101 via bearings 106 so that the upper and lower ends thereof are arranged so that the axial direction thereof is arranged along the vertical direction. Further, the rotation driving shaft of the servo motor M1 is connected to the lower end of the ball screw 105, and the rotational force of the rotation driving shaft of the servo motor M1 is transmitted to the ball screw 105. Further, the brackets 107, 107 to which the cutting / cutting cutters 103, 103 are attached are respectively screwed to the right-hand screw region 105a and the left-hand screw region 105b of the ball screw 105 in a state in which the rotation around the vertical axis is restricted. Then, as described above, when the ball screw 105 rotates,
The brackets 107, 107 screwed into the right-hand threaded region 105a and the left-handed screw region 105b are driven toward and away from each other along the axial direction of the ball screw 105 according to the rotation direction of the ball screw 105, thus making a pair of cutting / cutting. The cutters 103, 103 are configured to be opened and closed.

On the other hand, the side of the slitting cutter 153 is also configured in substantially the same manner. That is, the ball screw 155 is rotatably supported by the cutter body 101 via the bearing 156, and the brackets 157 and 157 to which two each of the split cutters 153 and 153 are mounted are respectively restricted from rotating about the vertical axis. The ball screw 155 is screwed into the right-hand thread region 155a and the left-hand thread region 155b. The brackets 157 and 157 are brought into contact with and separated from each other by driving the servomotor M2 in the same manner as described above, and the split cutters 153 and 153 are opened and closed.

As shown in FIGS. 1 to 3, the discharging means 550 includes a support 551, a rail 552 fixed to the upper end of the support 551 and arranged along the left-right direction indicated by arrows R and S, and a rail 552. And a discharge clamp 553 movably supported along the rail longitudinal direction. Then, the discharge clamp 553 is moved in the left-right direction along the rail 552 by the driving of a driving means (not shown), and the discharge clamp 553 can simultaneously grasp and release two cut wires.

On the other hand, in this harness manufacturing apparatus, each of the drive units is connected to a control unit (not shown), and the drive of each drive unit is controlled based on an output signal from the control unit. The operation is performed.

Next, the operation of the harness manufacturing apparatus will be described with reference to the flowchart of FIG. 6 and the operation explanatory diagrams of FIGS. 7 to 21. In addition, the first and the second before the start of the operation
The clamps 200 and 300 are arranged on the electric wire feeding lines Xa and Xb, respectively, and are in a state in which the gripping on the electric wires 600a and 600b is released, and the cutting / cutting cutter 103 and the tearing cutter 1
53 are open each. Further, the discharge clamp 553 of the discharge means 550 is in the electric wire holding release state at the position moved rightward as indicated by the arrow R in FIG.

From this state, in step S1, as shown in FIG. 7, the feeding rollers 53, 53 of the electric wire feeding means 50 rotate while holding the electric wires 600a, 600b, respectively, and the electric wires 600a, 600b are fed. A predetermined amount is fed in the direction of arrow P along the lines Xa and Xb (in FIG. 7, only one side of the electric wire 600a is shown.
The same applies to Figures 21 to 21. ) Next, as shown in FIG. 8, the electric wires 600a and 600b are gripped by the first clamp 200. Next, as shown in FIG. 9, the feeding rollers 53, 53
When the clamp to the electric wires 600a and 600b is released,
After the second clamp 300 has advanced a small amount along the electric wires 600a and 600b, the electric wires 600a and 600b are gripped by the second clamp 300 as shown in FIG. This allows the wires 600a, 600b
The tip ends of the cutting / cutting cutters 103 are arranged in correspondence with the upstream end positions of the intermediate strip scheduled regions.

Next, in step S2, as shown in FIG. 11, the electric wires 600a and 600b are sandwiched by the cutting / cutting cutter 103 and cut until the entire circumference of the covering portion at the upstream end of the intermediate strip planned region reaches the core wire. (First cutting process). Next, as shown by the solid line in FIG. 12, after the cutting / cutting cutter 103 is opened, as shown in FIG. 13, the first and second clamps 200,
Each 300 moves a predetermined amount to the right as shown by the arrow R.
As a result, the tips of the slitting cutters 153 are arranged corresponding to the positions of the upstream end portions of the intermediate strip planned regions of the electric wires 600a and 600b. Then, step S3
Then, as shown in FIG. 14, the slitting cutter 153 is closed, and the slitting cutter 153 cuts the upstream end of the intermediate strip planned region of the electric wires 600a and 600b. As shown in Fig. 15, the first and second clamps remain in this cut state.
200 and 300 are respectively retracted in the arrow Q direction by a predetermined amount. As a result, two slit-shaped cut grooves 65 are provided from the upstream end position to the downstream end position of the intermediate strip planned area.
0 is formed respectively (cut processing). Next, as shown in FIG. 16, after the tear cutter 153 is opened, the first and second clamps 20 are opened in step S4 as shown in FIG.
0.300 moves to the left by a predetermined amount as shown by arrow S, and electric wires 600a and 600b are arranged on electric wire feeding lines Xa and Xb, respectively. As a result, the tips of the cutting / cutting cutters 103 are arranged in correspondence with the downstream end positions of the intermediate strip planned regions of the electric wires 600a and 600b.
Next, in step S4, as shown in FIG. 18, the cutting / cutting cutter 103 is closed, and the cutting / cutting cutter 103 covers the downstream end of the intermediate strip planned region of the electric wires 600a, 600b. Cutting is performed until the entire circumference of the part reaches the core wire (second cutting process). In this cut state, as shown in FIG. 19, the first and second clamps 200 and 300 have arrow marks P, respectively.
A predetermined amount is moved forward as shown in FIG. By moving the electric wires 600a and 600b forward while locking the cutting / cutting cutter 103 to the covering portion in this manner, the covering portion in the intermediate strip planned region is peeled off in order from the downstream side to the upstream side,
In this way, the covering portion of the intermediate strip region is peeled off from the core wire 610. Next, as shown in FIG. 20, the cutting / cutting cutter 103 is opened, and the feeding rollers 53, 53 hold the electric wires 600a, 600b, respectively.

Then, as shown in FIG. 21, the first and second clamps
After the grips of 200 and 300 on electric wires 600a and 600b are released, the feed rollers 53 and 53 rotate in step S5, and electric wires 6
00a, 600b are fed along the electric wire feeding lines Xa, Xb in the arrow P direction by a predetermined amount. In addition, the electric wire in this step S5
600a, 600b feed amount and the electric wire 600 in step S1 above
The sum of the a and 600b feed amounts corresponds to the length dimension of the harness.

Next, the electric wires 600a and 600b are connected to the first and second clamps 200 and 300.
And the feeding rollers 53, 53
After the nipping between the electric wires 600a and 600b is released, the electric wires 600a and 600b are cut by the cutting / cutting cutter 103 in step S6 (cutting process). Then step S7
, The first clamp 200 advances a small amount in the direction of arrow P, and the entire circumference of the covering portion of the downstream end of the residual electric wires 600a and 600b gripped by the first clamp 200 is cut by the cutting / cutting cutter 103. . And the first clamp with the cut state
When 200 is retracted in the direction of arrow Q, the covering portions of the downstream end portions of the two residual electric wires 600a and 600b are peeled off.

Then, as shown in step S8, the first clamp 200
Moves to the right as shown by the arrow R, and the first terminal crimping means 40
With 0, the terminals 602, 602 are crimped to the downstream stripped ends of the two residual electric wires 600a, 600b, respectively (first terminal crimping process). After that, the first clamp 200 moves to the left as shown by the arrow S and returns to the original position shown in FIG.

On the other hand, as shown in step S10, while the first terminal crimping process (step S8) is being performed, the second clamp 300
Moves back a little in the direction of arrow Q, then the second clamp 300
The entire circumference of the covering portion at the upstream end of the two cut electric wires gripped by is cut by the cutting / cutting cutter 103. In the cut state, the second clamp 300 advances in the direction of arrow P, and the coating portions at the upstream end portions of the two cut wires are stripped (second coating stripping process).

Next, in step S11, the second clamp 300 moves to the left as shown by the arrow S, and the second terminal crimping means 500 crimps the terminals to the upstream stripped ends of the two cut wires.

Then, in step S12, the two cut wires are gripped by the discharge clamps 553, respectively, and the grip of the second clamp 300 on the cut wires is released, and the cut wires are passed from the second clamp 300 to the discharge clamp 553. Be done. Subsequently, the discharge clamp 553 moves along the rail 552 to the left as shown by the arrow S, and then the grip on the cut wire is released, and the two cut wires are discharged to the wire discharge portions (not shown). It

On the other hand, the second clamp 300, which has handed the cut wire to the discharge clamp 553, is moved downward while descending to the right as shown by the arrow R, and is moved to a position below the wire feeding lines Xa and Xb and then rises. By this, it returns to the original position shown in FIG. In parallel with the movement operation of the second clamp 300 to the original position, in step S9, the residual electric wires 600a, 600b are
Are sent in the same manner as in step S1 above. In this manner, the process returns to step S2 again, and the above-described operation is repeated to sequentially manufacture two harnesses in which the covering portion of the intermediate strip region is stripped off and the terminals are crimped at both ends.

According to this harness manufacturing device, the cutting / cutting cutter 10
3 makes a notch on the entire circumference of the covering part at both ends of the intermediate strip area of the electric wires 600a and 600b, and at the same time, the cutting cutter 153
By forming a slit-shaped cut groove 650 from the upstream end to the downstream end in the covering portion of the intermediate strip region by
Since the covering portion of the intermediate strip region is peeled off, the exposed dimension of the core wire in the intermediate strip region does not change with time. That is, FIG. 22 and FIG.
Unlike the conventional harness manufacturing apparatus shown in FIGS. 25 and 27, the sheath of the intermediate strip region is not compressed forward and backward, and the core wire of the intermediate strip region is exposed by elastic restoration of the sheath. The dimensions do not shrink over time. Therefore, the exposed dimension of the core wire in the intermediate strip area is always kept constant, and the variation in the exposed dimension of the core wire can be prevented.

When driving the cutting / cutting cutter 103 and the tearing cutter 153 to open and close, the cutting / cutting cutter 103 is rotated by rotating the rotary drive shafts of the servomotors M1 and M2 using the ball screws 105 and 155 and the servomotors M1 and M2. And since the cutting cutter 153 is configured to open and close,
The cutting / cutting cutter 103 and the tearing cutter 153 can be stopped at arbitrary vertical positions according to the drive amounts of the servomotors M1 and M2. Therefore, the servo motor
Cutting / cutting cutter 1 just by changing the driving amount of M1 and M2
It is possible to adjust the cutting position and the cutting amount of the 03 and the cutting cutter 153 to the electric wires 600a and 600b, respectively. In other words, it is possible to easily adjust the cutting positions and the cutting amounts of the cutting / cutting cutter 103 and the splitting cutter 153 for all kinds of electric wires having different diameters and the like.

In the above embodiment, when the covering portion of the intermediate strip area is peeled off, as shown in steps S2 to S4 of FIG. 6, the first cutting process, the cutting process, and the second cutting process are performed. However, the temporal order of these processes (S2 to S4) is not particularly limited and may be performed in any order.

(Effects of the Invention) As described above, according to this harness manufacturing apparatus, the cutting cutter is arranged, and the cutting / cutting cutter makes cuts on the entire circumference of the covering portion at both ends of the intermediate strip region of the electric wire. Since the slit-shaped cut groove is formed from the one end side to the other end side in the covering portion of the intermediate strip area by the cutting cutter, the covering portion of the intermediate strip area is peeled off from the electric wire, so that the intermediate strip area The exposed size of the core wire does not change over time, and the exposed size of the core wire does not vary.

Further, according to the invention of the present application, the cutting / cutting cutter and the splitting cutter are fixedly installed in parallel and the electric wire is moved to perform switching of the cutter, cutting, and splitting work. Since the strip length can be freely changed without affecting the interval between the two clamping means, and the cutting / cutting cutter and the cutting cutter are not moved during cutting and tearing work,
The distance between the first and second clamping means is extremely shortened regardless of the strip length, and there is an effect that the entire apparatus becomes compact.

[Brief description of drawings]

FIG. 1 is a perspective view showing a harness manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a perspective view of an essential part of the apparatus. FIG. 5 is a front view showing a cutter portion applied to the apparatus, FIG. 6 is a flow chart for explaining the operation of the harness manufacturing apparatus of the above-described embodiment, and FIGS. 7 to 21 are the operations of the apparatus, respectively. Explanatory drawing, FIG. 22 is a schematic side view showing a conventional harness manufacturing apparatus, FIG. 23 is a perspective view of an essential part thereof, FIG. 24 is a perspective view showing a harness, and FIGS. 25 to 27 are conventional harnesses. It is a principal part side view for demonstrating operation | movement of a manufacturing apparatus. 50: electric wire feeding means, 100: cutter section, 103: cutting / cutting cutter, 104: first driving section, 153: tearing cutter, 154: second driving section, 200: second 1 clamp, 250 ... first clamp means, 251 ... first clamp moving means, 300 ... second clamp, 350 ... second clamp means, 351 ... second clamp moving means, 600a, 600b ... electric wire , 610 …… Core wire, 650 …… Notch groove

Claims (1)

[Claims] 1. An electric wire feeding means for feeding an electric wire along an electric wire feeding line, and the electric wire feeding line direction and its electric wire in a virtual plane including the electric wire feeding line in a state where the electric wire is clamped. First and second clamp means movable to the side of the feed line, and moving means for moving the first and second clamp means in the electric wire feed line direction and to the side of the electric wire feed line. And a pair of cutting / cutting cutters that cut the electric wire clamped by the first and second clamping means or make a cut in the circumferential direction of the electric wire in the covering portion, and the electric wire feeding line side A cutting cutter that is installed in parallel with the cutting / cutting cutter on one side and that cuts in the longitudinal direction of the electric wire in the covering portion of the electric wire clamped by the first and second clamping means. The clamping means is moved to the cutting / cutting cutter side by the moving means while the front and rear sides of the intermediate strip area of the electric wire transferred by the electric wire feeding means are respectively gripped by the both clamping means.
A cutting control means for making a cut on each of the covering portions on the one end side and the other end side of the intermediate strip area of the electric wire by a cutting cutter, and the moving means for holding both the clamping means holding the front and rear of the intermediate strip area of the electric wire. Is moved by the moving means to the side of the cutting cutter, and the clamping means is moved to move the both clamping means along the longitudinal direction of the electric wire in a state where the covering portion on one end side of the intermediate strip area is cut by the cutting cutter. The harness manufacturing apparatus is provided with a tear control means for forming a slit-shaped cut groove from one end side to the other end side of the intermediate strip region.