JPH08250365A - Wire terminal treatment equipment and wire coating removing method - Google Patents

Abstract

PURPOSE: To provide an equipment which removes a coating from the terminal of a wire which is comparatively fine and used for manufacturing a coil. CONSTITUTION: A wire terminal treatment equipment is equipped with a wire feed device 10 which feeds a wire of continuous length, a take-up device 60 which takes up a wire fed from the wire feed device 10, and a coating removing device 30 which removes a part of a wire stretched between the devices 10 and 60, wherein the coating removing device 30 is equipped with a housing 31, a reflecting plane 32 arranged inside the housing 31, and a light source 20 for irradiating a wire extending through the housing 31 with light rays.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire end treatment device for removing a film on an end portion of a wire forming a coil such as a transformer or an electromagnet, and a method for removing a wire film.

[0002]

2. Description of the Related Art A thin copper wire (or a wire of a conductive metal) used for a coil is coated on its surface. Therefore, at both ends of the coil it is necessary to remove such coating for soldering.

Conventionally, the coating on both ends of the coil has been removed by a mechanical treatment method or a chemical treatment method.
In the mechanical processing method, the copper wire coating is mechanically scraped off.
Such a method is used for a relatively thick wire having a diameter of 0.5 mm or more, but is not used for a thinner wire.
This is because this method may scrape or damage not only the coating on the surface of the wire but also the wire inside itself.

In the chemical treatment method, the coating is dissolved and removed by a chemical. Therefore, it can be used for a relatively thin wire having a diameter of 0.5 mm or less. However, this method has a problem in handling and disposing of chemicals and waste liquids, and also has problems in contamination, influence on the human body, and the like.

Traditionally, the coating on both ends of the coil has been removed before or after the coil was manufactured. However, it has not been possible to quickly remove the coating on both ends of the coil by an automatic process.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an apparatus for treating a coating on an end portion of a relatively fine wire for manufacturing a coil.

In view of the above-mentioned problems, it is an object of the present invention to provide an apparatus for removing the coating on the ends of relatively thin wires for manufacturing coils.

[0008]

According to the present invention, a wire supplying device for supplying a long wire, a winding device for winding the wire supplied from the wire supplying device, the wire supplying device and the winding device. A wire removing device disposed between the wire removing device and a wire removing device for removing a part of the wire coating, wherein the film removing device includes a housing, a reflecting surface disposed in the housing, and the housing. A light source device for irradiating a light beam to the wire extending through the wire.

According to the present invention, in the wire end treating apparatus, the reflecting surface is an inner surface of a cylinder or a spherical surface.

According to the present invention, in the wire end treatment device, the light source device has a light emitting device and an optical fiber for propagating a light beam generated by the light emitting device, and one end of the optical fiber is disposed in the housing. It is characterized by being.

According to the present invention, in the wire end treating apparatus, the housing is formed in a closed container shape.

According to the present invention, in the wire end treatment apparatus, a preheating device is connected to the housing, and the preheating device has a heating device for heating the gas in the housing.

According to the present invention, the wire end treatment apparatus is characterized by having a filter device for purifying the gas in the housing.

According to the present invention, in the wire end treatment device, an inspection device for inspecting the removal of the coating film of the wire is provided between the winding device and the coating film removing device, and the inspection device has two types. The method is characterized in that the removal of the coating of the wire is inspected by electrical conduction between the coating removal portions.

According to the present invention, the wire end treatment apparatus includes a marking device for applying paint between the wire supplying device and the film removing device to the portion of the wire where the film should be removed. Characterize.

According to the present invention, in the wire film removing method, the wire is penetrated into the housing, the light from the light source is condensed by the reflecting surface arranged in the housing, and the light is condensed. Irradiating a predetermined position on the wire to remove the coating on the wire.

According to the present invention, the method of removing a coating film of a wire includes preheating the gas in the housing and cleaning the gas in the housing with a filter device.

According to the present invention, the method for removing a coating film of a wire includes a step of applying a paint to the predetermined position in advance and attaching a marker before the wire is introduced into the housing.

According to the present invention, the method for removing a coating film of a wire includes the step of inspecting whether or not the coating film of the wire discharged from the housing is removed at the predetermined position.

[0020]

According to the present invention, since the film removing device collects the light from the light source by the reflecting surface and irradiates it to the predetermined portion of the wire, the light energy can be efficiently removed even if the light from the light source is diffused light. Can be used for.

[0021]

FIG. 1 shows an example of a wire end treating apparatus according to the present invention. The wire end treatment device of this example is a wire supply device 10.
Marking device 15, light source device 20, film removing device 3
0, a preheating device 40, an inspection device 50, a wire winding device 60, and a control device 70 for controlling such a device.

The wire supply device 10 has a reel 11 on which a long wire 9 is wound, a motor 12 for driving the reel 11 and a distance measuring device 13 for detecting the traveling distance of the wire 9. . Wire winding device 60
Has a reel 61 for winding the long wire 9 and a motor 62 for driving the reel 61.

The wire 9 supplied from the wire supply device 10 is pulled by a predetermined tension and wound by the wire winding device 60. Although the wire 9 is held at a predetermined tension by the motors 12 and 62 provided on the reels 11 and 61, a tension holding device for holding the wire 9 at a predetermined tension may be provided. Further, any of these may be omitted as long as the wire 9 can be maintained at a predetermined tension. For example, one of the tension holding device or the motors 12, 62 may be omitted.

The marking device 15 has a paint dispenser 16 for applying paint to the portion of the wire 9 to be coated. The wire 9 is provided with a coating of synthetic resin or the like, but such a coating may be transparent in some cases. Therefore, in the film removing device 30, a predetermined portion of the wire 9 is irradiated with a light beam, but a paint having a high heat absorption rate, for example, a black paint is applied in order to improve the heat absorption rate.

The light source device 20 has a suitable light emitter 21 and an optical fiber 22 for guiding the light generated by the light emitter 21 to the film removing device 30. The optical fiber 22 is omitted, and the light emitting device 21 is directly connected to the film removing device 30.
May be attached to.

The film removing device 30 has a housing 31, and the wire 9 penetrates and moves in the housing 31. A reflective surface 32 is provided on the inner surface of the housing 31. Details of the reflecting surface 32 will be described later.

The end of the optical fiber 22 is arranged at an appropriate position in the housing 31. Thus, the light generated by the light emitter 21 of the light source device 20 is transmitted to the optical fiber 2
It is guided into the housing 31 via 2. Such light is reflected by the reflection surface 32 of the housing 31 and condensed, and is irradiated onto a predetermined position of the wire 9. Thereby, the coating of the wire 9 is removed by heating. As described above, the optical fiber 22 may be omitted and the light emitter 21 may be arranged at an appropriate position in the housing 31.

The preheater 40 functions to preheat the gas within the housing 31 of the coating remover 30 and to clean it. A temperature detecting device 33 is provided in the housing 31 of the film removing device 30.
The preheating device 40 operates based on the temperature information obtained by. Details of the preheating device 40 will be described later.

The inspection device 50 inspects whether the wire 9 discharged from the film removing device 30 has the film removed at a predetermined portion. The inspection device 50 includes a pair of probes 51.
It has A and 51B, a continuity checker 52, and a marker paint dispenser 53. The probes 51A and 51B are brought into contact with the two film-removed portions of the wire 9, and the continuity checker 52
Detects conduction between the two. When the electrical conductivity between the two is good, it is judged that the film removal of the two film removal parts is good, and when the electrical conductivity between the two is not good, the two film removal parts are not removed. Film removal is judged to be poor. When the film removal is poor, the marker paint dispenser 53 supplies the marker paint to the wire 9. In this way, it is easily understood that the film removal at the film removal portion after the marker paint has been applied is defective.

The controller 70 temporally controls the operation or drive of the above-mentioned device. The portion of the wire 9 from which the film is removed is determined by the dimensions of the coil manufactured using the wire 9. For example, if the dimension of the wire 9 used to manufacture one coil is L, the wire 9
It is necessary to form a predetermined film removal portion for each length L of.

When the wire feeding device 10 feeds the wire 9 having the length L, the control device 70 receives the wire feeding device 1
0 and the operation of the wire winding device 60 are stopped, and a command signal is supplied to each device to perform the above-described series of operations. Thereby, each device operates. When the work such as marking, film removal, and film removal inspection is completed, the control device 70 causes the wire supply device 10 and the wire winding device 6 to operate.
The command signal is supplied to 0, and the wire 9 is run for the length L. The distance traveled by the wire 9 is detected by the distance measuring device 13. When the wire 9 travels the distance L, the control device 70 controls the wire supply device 10 and the wire winding device 60.
Stop the operation and repeat the above work. Further, the control device 70 inputs the temperature information from the temperature detection device 33 and supplies a command signal to the preheating device 40.

FIG. 2 shows an example of the structure of the film removing device 30.
2 is a cross section of the film removing device 30 taken along the line AA in FIG. 1, that is, a cross section taken along a plane perpendicular to the wire 9 passing through the film removing device 30. In this example, the housing 31 is provided with three light sources 23A, 23B, and 23C. Such light sources 23A, 23B, 23C may be light emitters or may be the ends of optical fibers connected to the light emitters.

The three light sources 23A, 23B and 23C are symmetrically arranged around the wire 9 extending in the center (perpendicular to the paper surface). The three light sources 23A, 23B,
Three reflecting surfaces 32A, 32B, 32C corresponding to 23C
Is arranged. Three such reflecting surfaces 32A, 32
B, 32C consist of spherical or cylindrical surfaces and are therefore depicted as part of a circle in FIG. The center of such a circle lies between each light source and the wire 9. That is, the center of curvature O ₁ of the first reflecting surface 32A is between the first light source 23A and the wire 9, and the center of curvature O ₂ of the second reflecting surface 32B is the second light source 2A.
3B and the wire 9, and the center of curvature O ₃ of the third reflecting surface 32C is between the third light source 23C and the wire 9.

The light from the first light source 23A is reflected by the first reflecting surface 32A, and the condensed light is guided to the wire 9.
Similarly, the light from the second light source 23B is emitted from the second reflecting surface 32.
The light reflected and condensed on B is guided to the wire 9, the light from the third light source 23C is reflected on the third reflecting surface 32C, and the condensed light is guided to the wire 9.

In the example of FIG. 2, three light sources 23A, 23
B, 23C and three reflecting surfaces 32A, 32B, 32C are arranged, but one or two light sources may be provided,
You may provide four or more light sources. In any case, the reflecting surface is provided corresponding to the light source.

Referring to FIG. 3, the film removing apparatus 3 according to this embodiment
The function of the reflective surface 32 of 0 will be described. FIG. 3 shows a part of the cross section of the film removing device 30 taken along a plane perpendicular to the wire 9 similar to FIG. 2, and shows the first light source 23A described in FIG. 2 and the first light source arranged corresponding thereto. Only the reflecting surface 32A is shown. As shown, the center of curvature of the reflecting surface 32A is O ₁ , the position of the light source 23A is A (−a, 0), and the position of the wire 9 (extending perpendicular to the paper) is B (b, 0). . The center of curvature O ₁ is the origin, and x is along the line connecting the origin and the two points A and B.
Take the axis and the y-axis perpendicular to it. Here, a and b are positive.

As shown, the light source 23A produces diffused light that diffuses at a central angle ± α. Such diffused light is reflected by the reflecting surface 32.
It reaches a point P (x, y) on A, where it is reflected at a reflection angle β. The reflected light is focused on the point B (b, 0) on the wire 9. The diffused light generated by the light source 23A is actually a conical shape obtained by rotating the line AP around the x axis, but only a part thereof is shown in FIG.

A line OP connecting the reflection point P (x, y) and the origin O
When the angle formed by x with the x-axis is θ and tan α = m, the relationship between the lengths a and b is expressed as follows.

[0039]

## EQU1 ## (a / b) (1 + m ² ) = 1 + (1-2a ² ).
m ² + 2a√ ^{[1+ (1-a 2) m} 2 ]

For example, if α = 0 to 12 °, point B
The range of (b, 0) becomes quite narrow. According to an actually calculated example, the reflecting surface 32 is a spherical surface having a radius R = 10 mm, the position A (−a, 0) of the light source 23 is a = 4 mm, and the point B (b, 0) on the wire 9 is b. = 2.24 mm,
The range where the reflected light is condensed on the x-axis is 45 μm.

The structure of the preheating device 40 according to this embodiment will be described with reference to FIG. The preheating device 40 according to this example is the heating device 4.
2, a heat exchanger 43, a pump or blower 44, and a filter device 45. Inlet 41 and outlet 4 of the preheating device 40
6 is connected to the housing 31 of the film removing device 30.

The gas in the housing 31 of the film removing device 30 is guided by the pump or blower 44 to the heat exchanger 43 via the inlet 41, where the gas flowing in the tube 47 in the heat exchanger 43 is preheated. To do. The gas exiting the heat exchanger 43 passes through the pump 44 and the filter device 45, is guided into the pipe 47 inside the heat exchanger 43, and is preheated there.
It The gas discharged from the tube 47 of the heat exchanger 43 is heated by the heating device 42.
Heated by the outlet 31 via the housing 31
Is returned to. The heating device 42 includes a heating element of any suitable type.

The filter device 45 removes dust, powder and the like contained in the gas to clean the gas. Such dust, powder, etc. include, for example, dust generated when the coating film of the wire 9 is removed. The gas that has passed through the filter device 45 is again guided to the heat exchanger 43, and this time proceeds inside the pipe 47.

The temperature of the gas introduced from the housing 31 decreases as it passes through the pump 44 and the filter device 45.
Such gas is preheated by passing outside the tube 47 of the heat exchanger 43, and further heated by the heating device 42.

For example, the temperature of the gas introduced into the heat exchanger 43 via the inlet 41 of the preheater 40 is T ₁ , the temperature of the gas leaving the heat exchanger 43 is T ₂ , the pump 44 and the filter device 45 are The temperature of the discharged gas, that is, the tube 4 of the heat exchanger 43
It is assumed that the temperature of the gas entering 7 is T ₃ , the temperature of the gas exiting the heat exchanger 43, that is, the temperature entering the heating device 42 is T ₄ , and the temperature of the gas exiting the heating device 42 is T ₅ . The relationship between these temperatures is expressed as:

[0046]

[Equation 2] T ₅ > T ₁ > T ₄ > T ₂ > T ₃

The heating device 42 is operated by a command signal from the control device 70. Thereby, the housing 31
The temperature of the gas inside is set to a desired value. The pump 44 is also operated by a command signal from the control device 70.

The embodiments of the present invention have been described above.
It will be apparent to those skilled in the art that the present invention can be variously modified without being limited to the above embodiments.

[0049]

According to the present invention, there is an advantage that the coating can be continuously and automatically removed at a predetermined position without cutting a long wire.

According to the present invention, there is an advantage that the coating of a long wire can be removed at a predetermined position by a dry method without using a chemical.

According to the present invention, there is an advantage that the coating of the long wire can be removed at a predetermined position without using a mechanical processing means and therefore without damaging the wire rod therein.

According to the present invention, there is an advantage that the light energy can be efficiently used because the diffused light is condensed and applied to a predetermined position of the wire.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration example of a wire end processing apparatus according to the present invention.

FIG. 2 is an explanatory diagram for explaining the internal structure of the film removing apparatus according to the present invention.

FIG. 3 is an explanatory diagram for explaining a state in which light is reflected by a reflecting surface and condensed in the film removing apparatus according to the present invention.

FIG. 4 is an explanatory diagram for explaining a configuration example of a preheating device according to the present invention.

[Explanation of symbols]

 9 wire 10 wire supply device 11 reel 12 motor 13 distance measuring device 15 marking device 16 paint dispenser 20 light source device 21 light emitter 22 optical fiber 23 light source 30 film removing device 31 housing 32 reflecting surface 33 temperature detecting device 40 preheating device 41 inlet 42 Heating device 43 Heat exchanger 44 Pump or blower 45 Filter 46 Outlet 47 Pipe 50 Inspection device 51A, 51B Probe 52 Continuity checker 53 Paint dispenser 60 Wire winding device 61 Reel 62 Motor 70 Control device

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display area // B21F 21/00 B21F 21/00

Claims (12)

[Claims] 1. A wire feeding device for feeding a long wire, a winding device for winding the wire fed from the wire feeding device, and a wire feeding device arranged between the wire feeding device and the winding device. A wire removal device for removing a portion of the wire coating, wherein the coating removal device includes a housing, a reflective surface disposed within the housing, and the wire extending through the housing. And a light source device for irradiating a light beam on the wire end treatment device. 2. The wire end treating apparatus according to claim 1, wherein the reflecting surface is an inner surface of a cylinder or a spherical surface. 3. The wire end treatment device according to claim 1, wherein the light source device has a light emitting device and an optical fiber for propagating a light beam generated by the light emitting device, and one end of the optical fiber is A wire end treatment device arranged in the housing. 4. The wire end treating apparatus according to claim 1, 2, or 3, wherein the housing is formed in a closed container shape. 5. The wire end treatment device according to claim 4, wherein a preheating device is connected to the housing, and the preheating device has a heating device for heating a gas in the housing. Edge processing device. 6. The wire end treatment apparatus according to claim 4 or 5, further comprising a filter device for purifying gas in the housing. 7. The wire end treatment device according to claim 1, 2, 3, 4, 5 or 6, for inspecting the removal of the coating of the wire between the winding device and the coating removal device. The inspection device of
A wire end treating device characterized in that the inspection device is configured to inspect the removal of the coating of the wire by electrical conduction between two coating removal portions. 8. The wire end treatment apparatus according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the film of the wire should be removed between the wire supply device and the film removing device. A wire end treatment device comprising a marking device for applying paint to a portion. 9. A wire is penetrated into the housing, light from a light source is condensed by a reflecting surface arranged in the housing, and the condensed light beam is applied to a predetermined position of the wire. Removing the coating film of the wire. 10. The method for removing a wire coating according to claim 9, comprising preheating the gas in the housing and cleaning the gas in the housing with a filter device. Wire removal method. 11. The wire coating removal method according to claim 9 or 10, further comprising: applying a coating material to the predetermined position in advance to attach a marker before introducing the wire into the housing. Method for removing coating film of wire. 12. The method of removing a coating film of a wire according to claim 9, 10 or 11, further comprising inspecting whether or not the coating film of the wire discharged from the housing is removed at the predetermined position. A method for removing a coating film on a wire, comprising: