JP2000175328A - Strippbr for covered electric wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the precision of working and to facilitate mixed flow production of different working specifications by providing an opening and closing portion with a pair of cutting blades capable of cutting and truing up the end parts of covered electric wires being at a standstill at an electric wire working position, and cutting the covered wires by a predetermined cutting length with the cutting blades prior to stripping. SOLUTION: A control unit 70 controls an air cylinder 21 and an air chuck 30 (having opening and closing chuck portions 31, 32 provided with stripping blades 33 and cutting blades 34 which form pairs and are arranged side by side) so as to open a centering chuck 23 and the air chuck 30, and conveys a covered electric wire W to an electric wire working position. Along with stretching all air cylinders 52-54 and selecting cutting blades 34, a ball screw unit is arranged at a cutting position in front. When the covered wire W stops at the wire working position, the centering chuck 23 interposes the covered wire W between and clamps it. Next, the taking-in hole of a suction pipe 61 is approacbed to the tip of a trash taking unit 60, and the air chuck 30 is driven to perform cutting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for stripping a covered electric wire.

[0002]

2. Description of the Related Art Generally, in the manufacture of a wire harness, a covered electric wire is measured and cut, and an end or an intermediate portion of the cut electric wire is subjected to skinning to expose a core wire. And a step of short-circuiting the core wire to a predetermined terminal. In order to automate the process of cutting and stripping an electric wire, various stripping mechanisms for a coated electric wire have been proposed.

For example, Japanese Unexamined Patent Publication No. Sho 60-16106 discloses a peeling apparatus provided with a plurality of pairs of peeling blades which advance and retreat on a plane perpendicular to the electric wire and sandwich the electric wire.
The pairs of the stripping blades are changed according to the type of the electric wire, so that a plurality of types of electric wires can be stripped.

[0004]

However, since the cutting device for trimming the ends of the coated electric wires before performing the stripping process is provided separately from the stripping device, it has been a large-scale facility. In addition, there is a risk that the covered electric wire may be displaced or deformed while being transported from the cutting device to the peeling device.

[0005] On the other hand, an apparatus has been developed in which a cutting blade for trimming the ends of a covered electric wire is provided in parallel with a stripping blade. However, in a conventional apparatus, the cutting blade and the stripping blade are arranged in the longitudinal direction of the electric wire. Since they were arranged side by side, it was difficult to change the cutting position for each covered electric wire to be processed or to change the stripped length. Therefore, so-called mixed production with different processing specifications for each electric wire has been extremely difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above-mentioned problems, and is intended to provide an insulated wire capable of improving machining accuracy with an inexpensive configuration and also facilitating mixed production with different machining specifications for each wire. It is an object to provide a peeling device.

[0007]

According to a first aspect of the present invention, there is provided a cover for forming a pair with a predetermined wire processing position interposed therebetween and stopping at the wire processing position. By opening and closing the insulated wire stopped at the wire processing position in a state where the back surface is along the surface orthogonal to the wire, a peeling blade capable of shearing the covered portion of the insulated wire,
An opening / closing drive unit for opening and closing each skinning blade by supporting a plurality of pairs of each skinning blade on the surface, and driving the opening / closing drive member in a direction orthogonal to the covered electric wire stopped at the wire processing position. With this, a selective driving unit for selectively peeling the covered electric wire from the plurality of pairs of peeling blades, and an open / close driving unit reciprocating in the longitudinal direction of the coated electric wire via the selective driving unit to peel the coated electric wire. A stripping device for stripping a covered electric wire having a stripping drive unit for performing processing, wherein a pair of cutting blades capable of trimming the ends of the covered electric wire stopped at the wire processing position are provided in the opening / closing drive unit; Is a device for stripping a covered electric wire, comprising: control means for controlling each drive unit so as to cut the covered electric wire at a predetermined cutting length prior to stripping.

[0008] In the invention including this specific matter, the cutting blade for trimming the insulated wire is provided in parallel with the stripping blade for stripping, and the insulated drive unit cuts the insulated wire in a fixed state. can do. Further, the opening / closing drive unit conventionally used only for peeling can also be used for cutting by the cutting blade. Further, since the cutting blade can be displaced by the peeling drive unit that displaces the peeling blade in the longitudinal direction of the covered electric wire, the control means changes the cutting position of the cutting blade by the peeling drive unit, so that any electric wire can be arbitrarily selected. It becomes possible to select a cutting position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a peeling apparatus 10 according to an embodiment of the present invention, FIG. 2 is a front view of the peeling apparatus 10 of FIG. 1, and FIG. 3 is a side view of the peeling apparatus 10 of FIG.

Referring to these drawings, a stripping apparatus 10 according to the illustrated embodiment draws out a covered electric wire, measures it,
An electric wire processing device (only the electric wire clamp 1 is shown in FIG. 1) for performing a terminal crimping process after performing an exfoliation process on an end portion, for exfoliating the end portion of the insulated wire after being measured. It is. The above-mentioned electric wire processing apparatus intermittently conveys in the direction orthogonal to the longitudinal direction of the coated electric wire W in a state where the end of the coated electric wire W is projected horizontally by clamping the electric wire clamp 1 on the conveyor. , For performing predetermined processing at each stop position.

The stripping apparatus 10 has a base 11 for installation on the wire processing apparatus. The base 11 is
It is formed in a substantially long plate shape in a plan view, and is fixed at a predetermined position by a bolt 11a. Then, corresponding to one stop position (hereinafter, referred to as “wire processing position”) of the covered wire W intermittently conveyed by the conveyor of the wire processing device, the insulated wire W stopped at the wire processing position is referred to as a “wire processing position”. The base 11 extends along the longitudinal direction. In the following description, the direction facing the insulated wire W in the longitudinal direction of the base 11 is temporarily assumed to be forward.

A table 12 is arranged at the center of the base 11, and various units are mounted on the table 12. First, a centering clamp unit 20 is arranged on the front end side of the base 11, and is attached to the front end of the table 12 via a stay 20a (see FIG. 3). The centering clamp unit 20 is driven by the air cylinder 21 via an air cylinder 21 disposed along the up-down direction, a connecting portion 22 connected to the air cylinder 21, and the connecting portion 22. Wire W stopped at
And a pair of centering chucks 23 that open and close on a plane perpendicular to the centering chuck 2 when the covered electric wire W stops at the above wire processing position.
3 for positioning the coated electric wire W by clamping.

In order to process the electric wire positioned by the centering clamp unit 20, an air chuck 30 as an opening / closing drive is disposed on the back side of the centering chuck 23. Air chuck 3
0 has opening and closing chuck portions 31 and 32, and the opening and closing chuck portions 31 and 32 have a peeling blade 33 and a cutting blade 34.
And are mounted side by side in pairs.

FIG. 4 is an enlarged perspective view showing a main part of FIG. Referring to FIG. 4, the peeling blade 33 has blades 33 a to 33 e formed at equal intervals in the left-right direction, and the peeling blade 33 fixed to one of the opening and closing chuck portions 31 as is well known. One of the blades 33a (~ 33
e) and the peeling blade 3 fixed to the other opening / closing chuck portion 32
3, the blade 3 corresponding to the one blade 33a
The outer periphery of the covered portion of the covered electric wire W can be cut by sandwiching the covered electric wire W between the covered electric wires 3a (to 33e).

The cutting blade 34 also has a V-shaped blade 34a.
By sandwiching the insulated wire W between the wires 34a, the insulated wire W can be sheared. The blade 34a and the blade 33e of the stripping blade 33 adjacent to the blade 34a are the blades 33a to 33e of the stripping blade 33.
Is set to an integral multiple (twice in the illustrated example) of the facing distance a.

In FIG. 4, reference numeral 30a denotes an adjusting screw for defining / adjusting the facing distance when the opening / closing chuck portions 31, 32 approach each other. Referring to FIGS. 1 to 3, the air chuck 30 as the opening / closing drive unit is supported by a mounting plate 35 fixed to the back side thereof. A lower portion of the mounting plate 35 has an LM guide 36 extending left and right.
Is displaceably supported. LM Guide 36
Are carried by a substantially T-shaped holder 37. The lower portion of the holder 37 is inserted through the insertion hole 12a of the table 12 and is provided with a guide rail 38 provided at the lower portion of the table 12.
For reciprocating movement. Further, a ball screw unit 40 connected to the holder 37 is provided above the table 12. The ball screw unit 40 constitutes a peeling drive unit in the illustrated example, and includes a servomotor 41 attached to the rear end of the table 12 and a ball extending back and forth so as to be rotationally driven by the servomotor 41. It includes a screw 42 and a screw portion 43 fixed to the holder 37 in a state of being screwed to the ball screw 42, and the servo motor 41 drives the ball screw 42 to rotate. Holder 3 integrated with screw portion 43 to be formed
7 can be moved back and forth.

At the side of the table 12, there are provided sensors S1 to S3 which are equally arranged in the front and rear direction. The sensors S1 to S3 detect the dog 37a attached to the holder 37, and thereby the skin stripping blade is provided. 33, position detection and control of the cutting blade 34 in the front-rear direction are performed. Next, a description will be given of a selection driving unit 50 for selectively selecting the above-described peeling blade 33 and cutting blade 34 with reference to FIG. FIGS. 5A and 5B are explanatory diagrams showing the configuration of the selection drive unit 50 according to the embodiment of FIG. 1, wherein FIG. 5A is a schematic plan view, and FIG. FIG. 4C is a schematic front view of the blade 34, and FIG. 4C is a schematic front view of the peeling blade 33 and the cutting blade 34 corresponding to the imaginary line position in FIG.

The selection driving section 50 is provided with the LM guide 3 described above.
6 through an attachment member 51 attached to one end of the LM.
The air cylinder 52 is embodied by three air cylinders 52, 53, and 54 connected in series along the longitudinal direction of the guide 36, and is provided at the end (the end opposite to the mounting member 51). 54 is connected to the above L
It is connected to a mounting plate 35 slidable on the M guide 36. Therefore, when any one of the air cylinders 52 to 54 expands and contracts selectively (or compositely), the displacement is transmitted to the mounting plate 35, and the blades 33 a to 33 h of the peeling blade 33 fixed to the air chuck 30. Either 33e or the blade 34a of the cutting blade 34 can alternatively face the covered electric wire W at the electric wire processing position so as to be able to open and close.

As shown in FIG. 5, the mounting member 51 and the air cylinder 52 adjacent thereto come into contact with each other at the time of contraction, and at the time of extension, they have the same size as the facing distance a of the blades 33a to 33e. They are set to face each other. The distance between the air cylinder 52 and the adjacent second air cylinder 53 is set to be twice as long as the distance a between the air cylinder 52 and the second air cylinder 53. The opposing interval at the time is set to be three times the opposing interval a.

As a result, the blades 33a to 33e and 34a can be opposed to the wire processing position by facing the air cylinders 52 to 54 in combination with the following Table 1.

[0021]

[Table 1]

Next, referring to FIG. 1 to FIG. 4, in order to collect the chips of the blades 33a to 33e and 34a described above, in the illustrated embodiment, a scrap removing unit 60 is provided.
Is attached. This debris removal unit 60 has a suction tube 61 bent in an L-shape in plan view. One end 61a of the suction pipe 61 extends left and right, and each blade 33,
The chips generated by the cutting process by the cutting blade 34 and the stripping process by the stripping blade 33 can be taken in by the take-in hole 62 facing the covered electric wire W stopped at the wire processing position. ing.
The other end 61b of the suction tube 61 is provided with a tube 6
3 is connected, and the chips collected from the intake hole 62 can be sucked by the negative pressure air through the tube 63.

Further, in the illustrated embodiment, an air cylinder 64 for driving the suction pipe 61 back and forth is provided, and the air cylinder 64 drives the suction pipe 61 back and forth at a predetermined timing described later. I have. The control unit 70 for controlling the above-described units is configured by a microcomputer and other electric components, and controls the respective units based on a time chart shown in FIG.

The data of the coated electric wire W to be processed as shown in Table 2 is individually input to the control unit 70, and the cutting position and the blade 33a (~) are stripped for each product number of the coated electric wire W. 33e) is input.

[0025]

[Table 2]

Next, the operation of each unit will be described with reference to FIG. First, in the initial state before the covered electric wire W is conveyed to the electric wire processing position, the control unit 70
The air cylinder 21 and the air chuck 30 are controlled so that the centering chuck 23 of the centering clamp unit 20 and the air chuck 30 as the opening / closing drive unit are opened, thereby allowing the covered electric wire W to be transported to the electric wire processing position. In this standby state, the sheathed wires W are first trimmed, so that all of the air cylinders 52 to 54 as the selection drive units are extended to select the cutting blade 34, and the ball screw unit 40 The cutting blade 34 is arranged at a front cutting position. When the covered electric wire W stops at the electric wire processing position in this standby state, first, the centering clamp unit 20 is driven, the centering chuck 23 sandwiches and clamps the covered electric wire W, and the air cylinder 64 of the scrap removing unit 60 connects the suction pipe. 61 is advanced to bring the intake hole 62 of the suction tube 61 close to the tip of the covered electric wire W. When these operations are completed, the air chuck 30 as an opening / closing drive unit is driven, and cutting is performed. Thereby, the insulated wire W
The cutting blade 34 which has been waiting corresponding to the processing position of the above cuts the front end portion of the covered electric wire W, and cuts it to the length set for the covered electric wire W. Then, the cut insulated wire W
The cutting waste is sucked into the suction pipe 61 of the waste removing unit 60.

When the cutting operation is completed, the air cylinders 52 to 54 as selective driving units are selectively expanded and contracted in accordance with the settings in Table 1 and the data in Table 2, and after the cutting operation is completed, the open / close driving unit is again turned on. When the air chuck 30 is opened, the blades 33a (~ 33) of the stripping blade 33 corresponding to the insulated wire W
e) is selected. In parallel with this, the servomotor 41 of the ball screw unit 40 advances the air chuck 30 via the mounting plate 37, and the blade 3 of the selected peeling blade 33
3a (-33e) is advanced to the stripping position corresponding to the covered electric wire W.

Then, when these operations are completed, the air chuck 30 is driven again, the peeling blade 33 is closed, and a cut is made in the covering portion of the covered electric wire W. Next, the servo motor 41 of the ball screw unit 40 is driven in the opposite direction to the above, and the air chuck 30 is retracted, thereby performing a peeling operation. Then, when the skinning is completed, each part returns to the origin and waits for the next covered electric wire W to stop, and after stopping, repeats the above operation.

As described above, in the above-described embodiment, the cutting blade 34 for trimming the ends of the insulated wire W is arranged in parallel with the stripping blade 33 for stripping, and the insulated wire W is fixed in place. In this state, the sheet can be cut by the air chuck 30 as an opening / closing drive unit. Further, the air chuck 30 which has been conventionally used only for peeling can also be used for cutting by the cutting blade 34.

Further, since the cutting blade 34 can be displaced by the peeling drive unit (ball screw unit 40) for displacing the peeling blade 34 in the longitudinal direction of the covered electric wire W, the control unit 70 is operated by the air chuck 30 to control the cutting blade 34. By changing the cutting position, it is possible to select an arbitrary cutting position for each covered electric wire W. As described above, according to the present invention, the cutting process can be performed using the conventional peeling mechanism, so that the equipment can be integrated and the size can be reduced, and the processing accuracy can be improved. In addition, since the insulated wire W can be cut and stripped at a fixed position, there is no danger of misalignment.

Further, the control unit 70 makes it easy to change the cutting position and the stripping length for each covered electric wire to be processed, and so-called mixed production can be realized. As described above, according to the present invention, a remarkable effect that the productivity of the coated electric wire is improved is obtained.

The above embodiment is merely an example of a preferred specific example of the present invention, and the present invention is not limited to the above embodiment. It goes without saying that various design changes are possible within the scope of the claims of the present invention.

[0033]

As described above, according to the present invention, a remarkable effect that machining accuracy can be improved with an inexpensive structure, and mixed production with different machining specifications for each electric wire can be facilitated. To play.

[Brief description of the drawings]

FIG. 1 is a perspective view of a peeling apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of the peeling apparatus of FIG. 1;

FIG. 3 is a side view of the peeling apparatus of FIG. 1;

FIG. 4 is an enlarged perspective view showing a main part of FIG. 1;

FIGS. 5A and 5B are explanatory diagrams showing the configuration of the selection drive unit according to the embodiment of FIG. 1; FIG. 5A is a schematic plan view, and FIG. 5B is a peeling blade and a cutting blade corresponding to the solid line position in FIG. (C) is a schematic front view of the peeling blade and the cutting blade corresponding to the imaginary line position of (A).

FIG. 6 is a time chart according to the embodiment of FIG. 1;

[Explanation of symbols]

 W Insulated wire 10 Peeling device 11 Base 11 Base 12 Table 12 Table 12 Table 12a Insertion hole 30 Air chuck 33 Peeling blade 34 Cutting blade 40 Ball screw unit (peeling driving unit) 41 Servo motor 50 Selection driving unit 70 Control unit

Claims (1)

[Claims] 1. A sheath stopped at the wire processing position in a state where a back surface is formed along a surface orthogonal to a covered wire stopped at the wire processing position while forming a pair with a predetermined wire processing position interposed therebetween. A peeling blade capable of shearing a covering portion of the covered electric wire by opening and closing the electric wire; an opening / closing drive unit for driving the opening and closing of each peeling blade by carrying a plurality of pairs of the peeling blades on the surface; A selection drive unit that drives the driving member in a direction orthogonal to the insulated wire stopped at the wire processing position to selectively face the insulated wire from the plurality of pairs of stripping blades so that the insulated wire can be peeled off; A stripping drive unit for performing stripping by reciprocating the open / close drive unit in the longitudinal direction of the coated wire through the unit. A pair of cutting blades capable of trimming the ends of the wire are provided in the opening / closing drive unit, and each driving unit is controlled so that the cutting blade cuts the covered electric wire with a predetermined cutting length prior to skinning. A stripping device for a covered electric wire, comprising: