JP2008301651A - Device for cutting insulating coat of electric wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for cutting an insulating coat of an electric wire, for cutting an insulating coat completely without damaging a core wire while improving efficiency in terminating an electric wire. <P>SOLUTION: The device is provided with a pair of upper/lower laser beam irradiating means for irradiating the insulating coat of the electric wire extending in forward/backward directions with laser beams from upper/lower directions, and an electric wire reciprocating means reciprocating the electric wire in right/left directions in a range exceeding an outer diameter size of the electric wire. An electric wire feeding mechanism 5 and an electric wire conveying mechanism 8 of an electric wire terminal processor can be used as the electric wire reciprocating means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for cutting an electric wire insulation coating with a laser beam when performing an end treatment of the electric wire. The present invention relates to a technique for improving so that an insulating coating can be cut with high efficiency.

  2. Description of the Related Art Conventionally, an electric wire terminal processing apparatus that cuts an electric wire, strips the terminal insulation coating of the cut electric wire, exposes the core wire, and then crimps a terminal to the exposed core wire is used (for example, , See Patent Document 1 below).

  The structure of this wire terminal processing apparatus will be outlined with reference to FIG. 6. This wire terminal processing apparatus strips the cutting blade 2 for cutting the electric wire 1 and the terminal insulating coating on the front side in the feeding direction of the cut electric wire. Strip machine 3, first terminal crimping machine 4 for crimping the terminal to the exposed core wire, wire feeding mechanism 5 for feeding wire 1 forward while rocking wire 1 between these parts, cutting The second strip machine 6 for stripping the terminal insulation coating on the rear side in the feeding direction of the electric wire, the second terminal crimping machine 7 for crimping the terminal to the exposed core wire, the electric wire while moving in parallel between these parts 1 and the like are provided.

The wire feeding mechanism 5 is supported so as to be swingable around the swing shaft 5a, and measures the feed roller 9a for feeding the wire 1 along the axis of the wire 1 and the length of the sent wire. First, a wire 1 having a predetermined length is sent out toward the cutting blade 2.
When the fed electric wire 1 is cut by the cutting blade 2, the electric wire feeding mechanism 5 swings as shown by an arrow A to face the first strip machine 3 and insulate the front end 1 a of the electric wire 1 in the feeding direction. Strip the coating to expose the core.
Next, the wire feeding mechanism 5 swings as shown by an arrow B so as to face the first terminal crimping machine 4 and perform a work of crimping the terminal to the exposed core wire.
Thereafter, the wire feeding mechanism 5 swings as shown by the arrow C and returns to the position facing the cutting blade 2, and thereafter, a series of operations are repeated.

Further, the electric wire transport mechanism 8 holds the rear end 1b in the feeding direction of the electric wire 1 cut by the cutting blade 2 and translates it as indicated by the arrow D, and the rear end 1b is moved to the second strip machine 6. Oppositely, the insulation coating of the rear end 1b is stripped and the core wire is exposed.
Next, the electric wire transport mechanism 8 moves in parallel as indicated by an arrow E, opposes the second terminal crimping machine 7, and performs a work of crimping the terminal to the exposed core wire.
Thereafter, the electric wire transport mechanism 8 moves in parallel as indicated by the arrow F and returns to the position facing the cutting blade 2, and thereafter, a series of operations are repeated.

JP-A-8-102354

By the way, in recent years, electric wires have been made thinner in order to reduce the weight and save space, and the insulation coating has become increasingly thinner.
As a result, when the first and second strip machines 3 and 6 use the strip blade to cut the insulation coating, the insulation blade is cut so that the cutting blade of the strip blade comes close to the core wire. It is necessary to put in.
However, the insulation coating does not necessarily have a uniform thickness, and when the core wire and the insulation coating are misaligned to produce a knitted meat, a strip blade is formed on a part of the strands constituting the core wire. There is a risk that the cutting edge of the metal bite will cut this strand.
However, even if the core wire is scratched or the strand is cut, it is difficult to detect this as a defect. Therefore, an apparatus and method that can remove the insulation coating without damaging the core wire have been desired.

A glass-coated electric wire used for heat-resistant applications has a structure in which a core wire is covered with a silicone rubber layer, and glass fibers are braided on the outer side thereof.
However, since the glass fiber is hard, the cutting edge of the strip blade is worn away and cannot be cut.
Furthermore, in addition to the thin and flexible glass fiber itself, the silicone rubber layer inside it is also flexible, so the glass fiber is very difficult to cut and the uncut glass fiber remains in a whisker-like problem. Has occurred.
Therefore, in order to improve durability, measures such as making the edge angle of the cutting edge obtuse, rotating the strip blade around the insulation coating, or coating the cutting edge are taken, but the cutting edge is worn. Therefore, it was necessary to replace the strip blade before it could not be cut, and the labor required for the replacement work as well as the management of the replacement time was a heavy burden.

  Therefore, the applicant of the present application has previously developed and applied for a device for cutting an insulating coating using laser light (Japanese Patent Application No. 2005-344434). According to the device of this prior application, the core wire is damaged. Insulation coating can be completely cut without any problems, and the efficiency of wire terminal processing can be greatly improved.

However, since the apparatus of the prior application reciprocates the laser beam in the left-right direction with respect to the stationary electric wire, there is room for further simplifying the structure.
Moreover, if it becomes possible to cut | disconnect the insulation coating of an electric wire using a laser beam, utilizing some existing electric wire terminal processing apparatuses, it will become possible to expand the applicable range significantly.

  Accordingly, an object of the present invention is to cut the insulating coating of the electric wire reliably using laser light while having a simple structure, and to easily make existing equipment by utilizing a part of the existing electric wire terminal processing device. It is an object of the present invention to provide a new electric wire insulation coating cutting device that can be modified.

The means described in claim 1 for solving the above problem is as follows.
A device that cuts the insulating coating of the electric wire with laser light during the electric wire terminal processing operation,
A pair of upper and lower laser light irradiation means disposed facing each other in the vertical direction so as to irradiate the laser beam from the vertical direction toward the insulation coating of the electric wire extending in the front-rear direction,
Electric wire reciprocating means for reciprocating the electric wire in the left-right direction at least in a range exceeding the outer diameter dimension of the electric wire.

That is, since the insulation coating cutting apparatus for electric wires described in claim 1 cuts the insulation coating of the wires using laser light, the insulation coating can be cut without damaging the core wire, and the core wire. It is not affected by the deformation of the material or uneven thickness of the insulation coating.
In particular, by using a laser beam having a short oscillation wavelength such as a carbon dioxide laser, the polymer material constituting the insulating coating can be dissolved and evaporated at a low energy density, and the copper wire constituting the core wire can be used. The strand itself has a very low absorptance, so it will not be damaged or altered.
In addition, since the structure is such that the insulating coating is irradiated with the laser beam by reciprocating the electric wire in the left-right direction while the pair of upper and lower laser beams are stationary, the insulating coating can be completely cut over the entire circumference.
As a result, the portion that is not cut as in the case of using the strip blade does not remain, so that it is possible to prevent the insulating coating from being stretched by pulling the insulating coating when the stripped insulating coating is removed.
Furthermore, since the structure is such that the laser beam irradiating means is complicated and precise, and the electric wire is reciprocated in the left-right direction, the speed at which the electric wire is reciprocated can be increased, and the work of cutting the insulation coating can be performed. Efficiency can be further increased.

  The means described in claim 2 is the apparatus described in claim 1, wherein the electric wire reciprocating means is a conveying means for translating the electric wire in the left-right direction during the electric wire terminal processing operation, and This conveying means is characterized in that its operation is controlled so as to reciprocate the electric wire in the left-right direction a predetermined number of times necessary for cutting the insulating coating of the electric wire by laser light.

That is, the electric wire insulation coating cutting apparatus according to claim 2 reciprocates the electric wire by using a conveying unit that translates the electric wire in the left-right direction during the electric wire terminal processing operation.
As a result, the laser beam irradiation means is added to a predetermined position of the existing electric wire terminal processing apparatus, and the laser beam is utilized while changing the part of the program for controlling the operation of the conveying means as it is. Can be modified to a facility for cutting the insulation coating of the wire.

According to a third aspect of the present invention, in the apparatus according to the first aspect, the electric wire reciprocating means moves the electric wire in the left-right direction around a swing shaft extending in the vertical direction during the electric wire terminal processing operation. It is a rocking means for reciprocating rocking.
The swinging means is controlled to operate so as to swing the electric wire in the left-right direction a predetermined number of times necessary for cutting the insulating coating of the electric wire by the laser light. .

In other words, the electric wire insulation coating cutting apparatus described in claim 3 reciprocates the electric wire using a swinging means for reciprocally swinging the electric wire in the left-right direction during the wire terminal processing operation.
As a result, while adding the laser beam irradiation means to a predetermined position of the existing wire terminal processing apparatus, by changing a part of the program for controlling the operation of the swinging means, while utilizing the existing equipment as it is, It can be modified to equipment that cuts the insulation coating of the electric wire using laser light.

According to a fourth aspect of the present invention, in the apparatus according to the third aspect of the present invention, the swinging means includes a front-rear direction drive mechanism that moves the electric wire back and forth along the axial direction thereof.
The front-rear direction drive mechanism is configured to move the electric wire back and forth according to the swing angle of the swinging means so that the cut surface of the insulating coating by the laser beam is a plane perpendicular to the axis of the wire. The operation is controlled.

That is, in the wire insulation coating cutting apparatus according to claim 4, the insulation coating cut surface is perpendicular to the axis of the wire by moving the wire greatly backward as the swing angle of the swinging unit increases. Flat surface.
As a result, when crimping the terminal to the exposed core wire, the core wire barrel portion that grips the core wire out of each portion of the terminal rides on the insulation coating, preventing the occurrence of so-called resin biting, and crimping the terminal against the core wire It is possible to reliably prevent the occurrence of defects.

According to a fifth aspect of the present invention, in the apparatus according to any one of the first to fourth aspects, the laser beam irradiation unit reciprocates the front end of the electric wire and the electric wire reciprocating unit and the electric wire. The second electric wire reciprocating means for reciprocating the rear end of the electric wire is disposed opposite to each other.
The laser light irradiation means is supplied with laser light from a single laser light generation means.

That is, in the electric wire insulation coating cutting apparatus according to claim 5, since the laser beam irradiation means is provided in each of the region for processing the front end and the region for processing the rear end of the electric wire, the insulation of the front end and the rear end of the electric wire is provided. It becomes possible to perform the work | work which cut | disconnects a coating | coated separately, and can raise the efficiency of an electric wire terminal processing work significantly.
In addition, since the laser light is supplied to each of these laser light irradiation means from a single laser light generation means, the entire structure of the insulating coating cutting apparatus can be configured simply and inexpensively.

  As is apparent from the above description, according to the present invention, the insulation coating of the electric wire can be cut using a laser beam while having a simple structure, and by utilizing a part of the existing electric wire terminal processing apparatus. It is possible to provide a new wire insulation coating cutting apparatus that can be easily added to existing facilities.

Hereinafter, with reference to FIGS. 1-5, each embodiment of the insulation coating cutting device of the electric wire of this invention is described in detail.
In the following description, the same parts as those in the prior art shown in FIG. 6 are denoted by the same reference numerals, and redundant description is omitted. The vertical direction and the direction in which the electric wire is reciprocated are referred to as the left-right direction.

First Embodiment First, referring to FIGS. 1 to 3, the insulation coating cutting apparatus 100 according to the first embodiment will be described. The apparatus 100 feeds the electric wire 1 in the front-rear direction along its axis. Between the roller 11 and a cutting blade 12 for cutting the electric wire 1, an electric wire swing mechanism (swing means / front-rear direction drive mechanism) 13 and a laser beam irradiation means 20 are respectively interposed. For convenience of illustration of the laser beam irradiation means 20, the gap between the wire swinging mechanism 13 and the cutting blade 12 is wide, but it goes without saying that this gap can be kept to the minimum necessary.

The wire swing mechanism 13 is supported so as to be swingable back and forth in the left-right direction around a swing shaft 13a extending in the vertical direction, and holds the front end 1a in the feed direction of the wire 1 cut by the cutting blade 12. A portion 13b and a servo motor 13c and a screw rod 13d for moving the holding portion 13b back and forth along the axis of the electric wire 1 are provided.
Thereby, the front end 1a of the electric wire 1 which has been cut back by the feed roller 11 after being cut by the cutting blade 12 is opposed to the first strip blade 14 at a position facing the laser light irradiation means 20. It is possible to swing back and forth between the position and the position facing the first terminal crimping machine 15.
Further, when cutting the insulation coating of the front end 1a of the electric wire 1, it swings back and forth in the left-right direction within a predetermined angle β range so that laser light can be irradiated in a range exceeding the outer diameter of the electric wire 1, The insulating coating can be cut by the laser light emitted from the laser light irradiation means 20.

The laser beam irradiation means 20 is a laser beam supported above the substrate 21 by a laser beam generation means 22 fixed below the substrate 21 of the electric wire terminal processing apparatus and a cylindrical support member 23 extending through the substrate 21 and extending upward. And a light irradiation portion 24.
The laser beam generating means 22 is a carbon dioxide laser device that generates a laser beam L having a wavelength of 10.6 micrometers.
Then, the laser light output from the laser light generating means 22 passes through the inside of the cylindrical support member 23 and extends upward, and is divided into two equal parts in the splitter 25 fixed inside the laser light irradiation portion 24. Thereafter, the light is guided to the path reflected by the mirrors 26 a and 26 b toward the first condenser lens 27 and the path reflected by the mirror 28 and directed to the second condenser lens 29.
The first and second condenser lenses 27 and 29 are arranged so as to face each other in the vertical direction with the electric wire 1 interposed therebetween, and irradiate the laser beam from both the upper and lower directions toward the insulating coating of the electric wire 1. It is like that.

By the way, when the front end 1a of the electric wire 1 is swung around the rocking shaft 13a (center point A), the laser light irradiation position C is fixed. Is a curved surface along the swing radius R.
Then, when the terminal is crimped by the first terminal crimping machine 15, the core wire barrel portion that grips and fixes the core wire among the portions of the terminal rides on the protruding end of the curved surface of the insulating coating, so-called resin biting occurs. Then, there is a risk of poor crimping.

  Therefore, the holding portion 13b of the wire swing mechanism 13 is in accordance with the swing angle θ of the wire swing mechanism 13 so that the cut surface of the insulating coating by the laser beam is a plane perpendicular to the axis of the wire 1. The operation is controlled so that the electric wire 1 is moved back and forth.

  More specifically, referring to the plan view shown in FIG. 3, when the swing angle of the wire swing mechanism 13 is θ, an operation of pulling the wire 1 backward by a predetermined distance is performed. The cut surface can extend perpendicular to the axis of the electric wire 1.

Here, the line segment CD in FIG. 3 is the length of a perpendicular line dropped in the front-rear direction along the axis of the electric wire 1 from the laser beam irradiation point C to the insulating coating cut surface.
At this time, since the value of the angle CBD is θ / 2,
Line CD = Line BC * SIN (θ / 2)
And
Line BC = 2 * (R * SIN (θ / 2))
Because
Line segment CD = 2 * R * SIN ² (θ / 2)
= R (1-COSθ)
The relationship is established.

Therefore, when the swinging angle of the wire swinging mechanism 13 is θ, the insulation caused by the irradiation of the laser beam is obtained by pulling the wire 1 backward in the axial direction by a distance determined by R (1-COSθ) by the holding portion 13b. The cut surface of the coating can extend perpendicular to the axis of the electric wire 1.
FIG. 3 shows the case where the electric wire 1 is swung counterclockwise, but the same applies to the case where the electric wire 1 is swung clockwise.

Further, the swing angle θ of the wire swing mechanism 13 can be easily obtained from a control signal supplied to a servo motor used to swing the wire swing mechanism 13.
And the magnitude | size of the quantity which the holding | maintenance part 13b pulls back the electric wire 1 can be easily controlled by controlling the action | operation of the servomotor 13c for moving the holding | maintenance part 13b back and forth.
Therefore, by changing a part of the existing program of the control device that controls the operation of the wire swinging mechanism 13, the cut surface of the insulation coating is configured to extend perpendicular to the axis of the wire 1. Can do.

When the cutting of the insulation coating using the laser beam irradiation means 20 is completed in this way, the wire swinging mechanism 13 swings so as to face the first strip blade 14, and the insulation coating is applied from the front end 1a of the wire 1. Removal work is performed.
The first strip blade 14 is not cut into the insulating coating of the electric wire 1 but is brought into contact with and separated from the electric wire 1 so as to engage with the end surface of the portion of the insulating coating that has been removed in the groove shape by the irradiation of the laser beam. It is supposed to be.
Accordingly, when the servo motor 13c is operated to rotate the screw rod 13d and the holding portion 13b is moved backward while the first strip blade 14 is engaged with the groove portion of the insulating coating, the front end 1a of the electric wire 1 is removed. The insulation coating can be removed.

Next, the wire swinging mechanism 13 swings so as to face the first terminal crimping machine 15, and an operation of crimping the terminal to the exposed core wire is performed.
At this time, the cut surface of the insulating coating cut by the laser beam irradiation means 20 is a plane extending perpendicular to the axis of the electric wire 1.
Thereby, when the terminal is crimped to the exposed core wire, the core wire barrel portion of the terminal does not run on the insulating coating, so that it is possible to reliably prevent the occurrence of crimping failure.

  On the other hand, the rear end 1b of the electric wire 1 cut by the cutting blade 12 is conveyed in parallel in the left-right direction while being held by a holding portion 16a provided in the electric wire carrying mechanism 16, and is opposed to the laser beam irradiation means 20. A position facing the second strip blade 17 and a position facing the second terminal crimping machine 18 can be taken.

At the position facing the laser beam irradiation means 20, the wire transport mechanism 16 reciprocates in parallel in the left-right direction within a range of a dimension W determined so that the laser beam can be irradiated in a range exceeding the outer diameter of the wire 1. An operation of cutting the insulating coating with the laser beam irradiated from the laser beam irradiation means 20 is performed.
Such an operation of cutting the insulating coating with the laser light can also be realized by changing a part of an existing program of the control device that controls the operation of the electric wire transport mechanism 16.

Further, at a position facing the second strip blade 17, in a state where the second strip blade 17 is engaged with the groove portion of the insulating coating, the servo motor 16b is operated to rotate the screw rod 16c in the normal direction so as to hold the holding portion. The operation of removing the insulating coating from the rear end 1b of the electric wire 1 is performed by retracting 16a.
Next, at a position facing the second terminal crimping machine 18, the servo motor 16 b is operated to reverse the screw rod 16 c and advance the holding part 16 a, thereby crimping the terminal to the rear end 1 b of the electric wire 1. Can be done.

That is, since the insulation coating cutting apparatus 100 for the electric wire of the first embodiment cuts the insulation coating of the electric wire 1 using laser light, the insulation coating can be cut without damaging the core wire. In addition, it is not affected by deformation of the core wire or uneven thickness of the insulation coating.
In addition, since the laser beam is applied to the insulating coating by moving the electric wire 1 in the left-right direction while the pair of upper and lower laser beams are stationary, the insulating coating can be completely cut over the entire circumference.
Furthermore, since the structure is such that the wire 1 is reciprocated in the left-right direction while the complicated and precise laser light irradiation means is stationary, the speed at which the wire 1 is reciprocated can be increased, and the insulation coating is cut. The work efficiency can be further increased.

In addition, the insulation coating cutting apparatus 100 according to the first embodiment adds the laser beam irradiation means 20 to the existing wire terminal processing apparatus, and also irradiates the insulation coating of the wire 1 with the laser beam while moving the wire swing mechanism 13. And the insulation coating of the electric wire 1 is cut | disconnected by making the electric wire 1 reciprocate in the left-right direction using the electric wire conveyance mechanism 16. FIG.
And the reciprocation of the electric wire 1 in the left-right direction by the electric wire swing mechanism 13 and the electric wire transport mechanism 16 can be realized by changing a part of the program of the control device that controls the operation of these mechanisms. Therefore, the existing equipment can be used as it is, and it can be remodeled into equipment for cutting the insulation coating of the electric wire using laser light.

Furthermore, in the insulation coating cutting apparatus 100 of the first embodiment, the wire 1 is pulled back more backward as the value of the swing angle θ of the wire swinging mechanism 13 is increased, so that the cut surface of the insulation coating is reduced. The plane is perpendicular to the axis.
As a result, when crimping the terminal to the exposed core wire, the core wire barrel portion that grips the core wire out of each portion of the terminal rides on the insulation coating, preventing the occurrence of so-called resin biting, and crimping the terminal against the core wire It is possible to reliably prevent the occurrence of defects.

2nd Embodiment Next, with reference to FIG. 4 and FIG. 5, the insulation coating cutting device 200 of 2nd Embodiment is demonstrated.
The apparatus 200 shown in FIG. 4 replaces the first and second strip machines 3 and 6 in the conventional electric wire terminal processing apparatus shown in FIG. 6 with laser beam irradiation means 30A and 30B, respectively, and an electric wire feeding mechanism ( A part of the program of the control device that controls the operation of the swinging means) 5, the electric wire conveying mechanism (conveying means) 8, and the feed roller (front-rear direction driving mechanism) 9a is changed.

The laser light irradiation means 30A and 30B are integrated as shown in FIG. 5, and a single laser light generation means 32 fixed below the substrate 31 of the wire terminal processing apparatus and the laser light. And a splitter 33 that divides the laser light L output from the generating means 32 into two equal parts.
Then, the laser light L extending upward from the splitter 33 is divided into two equal parts by the splitter 34 provided inside one laser light irradiation means 30A, and then reflected by the mirrors 35a and 35b to be the first condensed light. Guided to a path toward the lens 36 and a path reflected by the mirror 37 toward the second condenser lens 38.
The first and second condenser lenses 36 and 38 are disposed so as to face each other in the vertical direction with the electric wire 1 interposed therebetween, and emit laser light from both the upper and lower directions toward the insulating coating of the electric wire 1. It comes to irradiate.

Further, the laser light L extending laterally from the splitter 33 is reflected by the mirror 39 and extends upward, enters the other laser light irradiation means 30B, and is divided into two equal parts by the splitter 41.
Thereafter, the light is guided to the path reflected by the mirrors 42 a and 42 b toward the third condenser lens 43 and the path reflected by the mirror 44 and directed to the fourth condenser lens 45.
The third and fourth condenser lenses 43 and 45 are arranged so as to face each other in the vertical direction across the electric wire 1, and emit laser light from both the upper and lower directions toward the insulating coating of the electric wire 1. It comes to irradiate.

That is, the apparatus 200 according to the second embodiment uses a pair of laser light irradiation means 30A and 30B, which are configured as an integrated apparatus, and the single laser light generation means 32 emits laser light. Each has a structure for supplying light.
Thereby, the part which generate | occur | produces and irradiates a laser beam can be comprised simply and cheaply.

  The wire feeding mechanism 5 is swingable around a swing shaft 5a extending in the vertical direction, and the front end 1a of the wire 1 cut by the cutting blade 2 is positioned facing the cutting blade 2, laser light irradiation means It can be reciprocally swung between a position facing 30A and a position facing the first terminal crimping machine 4.

Further, the wire feeding mechanism 5 reciprocates in the left-right direction within a predetermined angle β so that the laser beam can be irradiated to a range exceeding the outer diameter of the wire 1 when the insulation coating of the front end 1a of the wire 1 is cut. The insulating coating can be cut by the laser beam that swings and is irradiated from the laser beam irradiation means 30A.
At this time, the feed roller 9a moves the electric wire 1 back and forth according to the swing angle θ of the electric wire feeding mechanism 5 so that the cut surface of the insulating coating by the laser beam becomes a plane perpendicular to the axis of the electric wire 1. The operation thereof is controlled so that the details are as described above with reference to FIG. Further, when the insulation coating is removed from the front end 1a of the electric wire 1 using the first strip blade 51 provided in parallel with the laser beam irradiation means 30A, the feed roller 9a moves the electric wire 1 backward.
The work of cutting the insulation coating by the laser beam and the work of removing the insulation coating by the first strip blade 51 are part of the existing program of the control device that controls the operation of the wire feeding mechanism 5. Realized by changing.

  The electric wire transport mechanism 8 opposes the rear end 1b of the electric wire 1 cut by the cutting blade 2 to a position facing the cutting blade 2, a position facing the laser light irradiation means 30B, and the second terminal crimping machine 7. It can be reciprocated in parallel between positions.

Further, the wire transport mechanism 8 is parallel to the left and right direction within a predetermined distance W so that the laser beam can be irradiated to a range exceeding the outer diameter of the wire 1 when the insulation coating of the rear end 1b of the wire 1 is cut. The insulating coating can be cut by the laser beam irradiated from the laser beam irradiation means 30B.
When the insulation coating is removed from the rear end 1b of the electric wire 1 using the second strip blade 52 provided in parallel with the laser beam irradiation means 30B, the electric wire holding portion 8a holding the rear end 1b. Moves the electric wire 1 backward.
The work of cutting the insulation coating by the laser beam and the work of removing the insulation coating by the second strip blade 52 are part of the existing program of the control device that controls the operation of the electric wire transport mechanism 8. It is realized by doing.

That is, in the electric wire insulation coating cutting apparatus 200 of the second embodiment, the laser beam irradiation means 30A is arranged on the electric wire feeding mechanism 5 side, and the laser beam irradiation means 30B is arranged on the electric wire transport mechanism 8 side. It is set.
Thereby, the efficiency of the operation | work which cut | disconnects the insulation coating of the front end 1a and the rear end 1b of the electric wire 1 with a laser beam can each be raised significantly.
In addition, since the pair of laser light irradiation means 30A and 30B are configured as an integrated device, the overall structure can be made simple and inexpensive.

As mentioned above, although each embodiment of the insulation coating cutting device of the electric wire which concerns on this invention was described in detail, it cannot be overemphasized that this invention is not limited by embodiment mentioned above and various changes are possible.
For example, in the above-described embodiment, when the electric wire 1 is driven in the back-and-forth direction so that the cut surface of the insulating coating is flat, the electric wire holding portion 13b and the feed roller 9a driven by the servo motor 13c are used. .
On the other hand, the electric wire 1 can also be driven in the front-rear direction by moving the electric wire feeding mechanism 5 and the entire electric wire swing mechanism 13 back and forth.

The whole top view which shows the insulation coating cutting device of 1st Embodiment. The front view which shows typically the structure of the laser beam irradiation means shown in FIG. The top view which shows geometrically the relationship between the rocking | fluctuation angle of an electric wire, and the pullback amount of an electric wire. The whole top view which shows the insulation coating cutting device of 2nd Embodiment. The front view which shows typically the structure of the laser beam irradiation means shown in FIG. The whole top view which shows the conventional electric wire terminal processing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric wire 2 Cutting blade 3 1st strip machine 4 1st terminal crimping machine 5 Electric wire feeding mechanism (oscillation means / electric wire back-and-forth movement means)
6 Second strip machine 7 Second terminal crimping machine 8 Electric wire conveyance mechanism (conveyance means)
9a Feed roller (front-rear direction drive mechanism)
9b Measuring roller 13 Electric wire swing mechanism (swing means)
13b Electric wire holding part (electric wire longitudinal drive mechanism)
14, 17 Strip blade 16 Electric wire conveyance mechanism (conveyance means)
20 Laser light irradiation means 30A, 30B Laser light irradiation means 51, 52 Strip blade

Claims (5)

A device that cuts the insulating coating of the electric wire with laser light during the electric wire terminal processing operation,
A pair of upper and lower laser light irradiation means disposed facing each other in the vertical direction so as to irradiate the laser beam from the vertical direction toward the insulation coating of the electric wire extending in the front-rear direction;
Electric wire reciprocating means for reciprocating the electric wire in the left-right direction in a range exceeding at least the outer diameter of the electric wire;
An insulation coating cutting apparatus for electric wires, comprising: The electric wire reciprocating means is a conveying means for translating the electric wire in the left-right direction during an electric wire terminal processing operation,
The operation of the conveying means is controlled so as to reciprocate the electric wire in the left-right direction a predetermined number of times necessary for cutting the insulating coating of the electric wire by the laser beam. The insulation coating cutting apparatus for electric wires described in 1. The wire reciprocating means is a swinging means for reciprocally swinging the electric wire in the left-right direction around a swinging shaft extending in the vertical direction during the wire terminal processing operation,
The operation of the swinging means is controlled so as to swing the electric wire in the left-right direction a predetermined number of times necessary for cutting the insulating coating of the electric wire by the laser light. 1. An insulation coating cutting apparatus for electric wires according to 1. The swinging means has a front-rear direction drive mechanism for moving the electric wire back and forth along its axial direction,
The front-rear direction driving mechanism is configured to move the electric wire back and forth in accordance with a swing angle of the swinging means so that a cut surface of the insulating coating by the laser light is a plane perpendicular to the axis of the wire. The operation | movement is controlled, The insulation coating cutting apparatus of the electric wire of Claim 3 characterized by the above-mentioned. The laser beam irradiating means is disposed opposite to a first electric wire reciprocating means for reciprocating the front end of the electric wire and a second electric wire reciprocating means for reciprocating the rear end of the electric wire,
5. The insulation coating cutting apparatus for electric wires according to claim 1, wherein the laser light irradiation means is supplied with laser light from a single laser light generation means.

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