Peeler

Abstract

To provide a peeler capable of preventing a polishing tool from interfering to coating; and of eliminating residual coating up to an edge of unprocessed coating.SOLUTION: A peeler 1 is provided with a blade body 4 and a polishing part 6 in a central area of a body 2. The polishing part 6 is constituted from a sliding body 8 slidably arranged in a peeler traveling direction with respect to the body 2, and a brush body 10 for eliminating residual coating of a conductor wire. The polishing part 6 is biased toward the peeler traveling direction, whose front side in a traveling direction of the brush body 10 is pressed to an end edge of coating of a stored electric wire from an electric wire storage port 2a.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a wire stripper for spirally stripping the coating from the end of a wire, and more particularly to a wire stripper with an abrasive tool capable of removing the residual coating after stripping.

Background Art

[0002] Conventionally, a wire stripper has been used to spirally strip the coating from the end while relatively rotating around a wire having a coating. Among such conventional wire strippers, there is also known a wire stripper capable of completely removing the residual coating after stripping with an abrasive tool such as a brush.

[0003] FIG. 8 is a view showing a conventional cable coating stripping tool.

[0004] The cable coating stripping tool 100 is a tool for stripping the coating of a wire while cutting it spirally from the end. The coating is stripped while relatively rotating with respect to the wire inserted through the insertion port 104 formed in the axial direction. The blade body 102 is disposed inclined with respect to the main body 101. And a brush 103 for removing the residual coating is disposed slightly rearward of the blade body 102 in the wire stripper advancing direction. By configuring in this way, while the coating is spirally stripped by the blade body 102, at the same time, the residual coating can be removed by the brush 103.

[0005] Such a cable coating stripping tool is described in Patent Document 1.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] The brush 103 is arranged at a radial position capable of contacting the surface of the conducting wire in order to completely remove the residual coating. Therefore, if the brush 103 rides on the untreated coating, the tip of the brush 103 may be forcibly lifted by the thickness of the coating and deformed. And once deformed, even if only slightly, a gap will be generated between the brush 103 and the conducting wire, resulting in insufficient removal of the residual coating.

[0008] By the way, since the coating is peeled off in a spiral shape, in order to prevent the brush 103 from riding on the untreated coating, it is necessary to arrange the brush 103 slightly behind the advancing position of the blade body 102 in the longitudinal direction of the electric wire.

[0009] However, when the blade body 102 reaches a predetermined cutting position in the longitudinal direction, the relative longitudinal advancement of the blade body 102 and the brush 103 with respect to the electric wire stops and they idle at the same position. Therefore, the residual coating in a band-shaped region corresponding to the longitudinal difference between the blade body 102 and the brush 103 cannot be removed.

[0010] Thus, in the conventional configuration, it has been considered difficult to accurately remove the residual coating until the coating is peeled off while preventing damage to the brush.

[0011] Therefore, an object of the present invention is to provide a peeling device that can prevent interference of the abrasive tool with the coating and can remove the residual coating until the untreated coating.

Means for Solving the Problem

[0012] In order to achieve the above object, the peeling device of the present invention is a peeling device that relatively rotates a blade body around an electric wire to remove a coating from an end portion, and is arranged so as to be able to contact the surface of the conducting wire of the electric wire, and is provided with a polishing portion that is slidable along the longitudinal direction of the electric wire, and biasing means for biasing the polishing portion against the direction in which the electric wire is accommodated.

[0013] In addition, the coating stripper of the present invention is characterized in that, in addition to the above configuration, the blade body is disposed inside the sliding range of the polishing portion.

Advantages of the Invention

[0014] As described above, according to the present invention, even when the polishing portion abuts on an untreated coating, it is possible to relatively retreat rearward while applying a biasing force to the coating side. As a result, it is possible to remove the residual coating until the time of untreated coating, and it is possible to prevent the polishing portion from riding on the coating, so that damage to the polishing portion can also be prevented.

[0015] In addition, according to the present invention, in addition to the above effects, the polishing portion can be disposed at a position ahead of the blade body in the advancing direction of the coating stripper. As a result, it is possible to safely perform only the operation of removing the residual coating by the polishing portion such as the finish after cutting in a state where the blade body is retracted rearward from the polishing portion so that unnecessary cutting does not occur.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0017] Hereinafter, an embodiment which is an example of the present invention will be described with reference to the drawings.

[0018] FIG. 1 is an overall perspective view of the wire stripper 1 of the present invention as seen from the polishing portion side.

[0019] On the front side of the main body 2 in the wire stripper advancing direction, a cylindrical wire accommodation port 2a is formed. Further, a blade body 4 and a polishing portion 6 are provided in the central region of the main body 2. Among these, the polishing portion 6 is provided so as to be slidable in the longitudinal direction of the wire to be processed. The longitudinal direction of the wire and the wire stripper advancing direction represent the same direction, but hereinafter, they will be used appropriately according to the object of the description.

[0020] The polishing portion 6 is composed of a sliding body 8 directly attached to the main body 2 and a brush body 10 for removing the residual coating on the surface of the conducting wire. A long hole 8a is formed in the sliding body 8 so as to extend along the wire stripper advancing direction. The sliding body 8 is slidably arranged in the wire stripper advancing direction with a guide pin 12 fixed to the main body 2 passing through the long hole 8a as a guide.

[0021] At the rear end in the wire stripper advancing direction, a tool connection portion 16 to which a rotary tool used in combination with the wire stripper 1 can be connected is provided. In the wire stripper 1 according to the present embodiment, a wire accommodation port 2a having an inner diameter capable of accommodating a wire having a coating is formed. Further, the inside of the main body 2 is formed so as to penetrate at least the conducting wire portion of the wire toward the rear side in the wire stripper advancing direction. Therefore, in order to regulate the entry of the wire in a state where the region for stripping the coating has reached the target length, a conducting wire regulating structure for blocking the movement of the conducting wire is provided on the rotary tool side. However, the conducting wire regulating structure may be provided inside the wire stripper 1 instead of on the external rotary tool side. In this case, a wall structure for abutting against the conducting wire and regulating its advancement is provided inside the rear side in the wire stripper advancing direction.

[0022] Therefore, in order to regulate the entry of the wire in a state where the region for stripping the coating has reached the target length, a conducting wire regulating structure for blocking the movement of the conducting wire is provided on the rotary tool side. However, the conducting wire regulating structure may be provided inside the wire stripper 1 instead of on the external rotary tool side. In this case, a wall structure for abutting against the conducting wire and regulating its advancement is provided inside the rear side in the wire stripper advancing direction.

[0023] Figure 2 is an overall perspective view of the skin peeler 1 of the present invention as seen from the blade body 4 side.

[0024] The blade body 4 is fixed to the main body 2 in an arrangement where the cutting edge is slightly inclined forward in the advancing direction of the skin peeler. The spirally connected coating chips after peeling are discharged from the discharge port 2b formed on the cutting edge side of the blade body 4.

[0025] Figure 3 is a perspective view showing the disassembled state of the polishing part 6 of FIG. 1.

[0026] The polishing part 6 is composed of a brush body 10 and a sliding body 8 that holds the brush body 10. The brush body 10 has an outer shape like a thick cylindrical body cut out in a range of about 90 degrees of the central angle.

[0027] The sliding body 8 is formed to cover the outer surface side of the brush body 10. As shown in FIG. 3, the sliding body 8 is attached to the main body 2 by a guide pin 12 via a spacer 14. The spacer 14 is set to a length slightly exceeding the thickness of the peripheral edge of the long hole 8a of the sliding body 8, preventing an increase in sliding friction due to over-tightening of the guide pin 12.

[0028] A compression spring 18 (biasing means) is provided between the sliding body 8 and the main body 2 on the rear side of the skin peeler in the advancing direction. By this compression spring 18, the polishing part 6 is biased forward in the advancing direction of the skin peeler to resist the entry of the electric wire.

[0029] Figure 4 is a cross-sectional view of the skin peeler 1 obtained by cutting the main body 2 along the line A-A of FIG. 1. Here, for convenience of explanation, the blade body 4 and the brush body 10 are shown filled in black.

[0030] As shown in FIG. 4, the distance L2 from the center in the radial direction to the brush body 10 is configured to be smaller than the distance L1 from the center to the blade body 4.

[0031] Here, the circle shown inside the main body 2 in Fig. 4 is a wire passing hole 2c for allowing the wire conductor portion to pass rearward. As can be seen in comparison with this wire passing hole 2c, the blade body 4 is set such that the tip position is substantially at the same position as the surface of the conductor. On the other hand, the brush body 10 is set to a dimension such that the tip enters into a region smaller than the diameter of the conductor. Since it is configured in this way, when the conductor comes into contact with the brush body 10, the brush body 10 side is pressed against the surface of the conductor with elastic deformation.

[0032] Note that when using an aluminum conductor, since an insulating oxide film is formed on the aluminum surface, it is desirable to remove this oxide film. The brush body 10 also has the effect of removing this oxide film.

[0033] Considering the movement during cutting with the stripper 1 as a reference, the conductor rotates relatively in the direction indicated by the dashed arrow inside the wire passing hole 2c. At this time, the blade body 4 receives a reaction force from the coating to be cut, while the brush body 10 mainly receives a reaction force from the conductor to be pressed. That is, it receives a force to rotate in the direction of the dashed arrow shown in Fig. 4. A force to rotate in the direction of the dashed arrow shown in Fig. 4.

[0034] Looking at the contact structure between the main body 2 and the sliding body 8, the sliding body 8 is in contact with the circumferential direction regulating walls 2d and 2e of the main body 2 in the circumferential direction. Also, in the radial direction, the sliding body 8 is in contact with the radial direction regulating wall 2f of the main body 2. The circumferential direction regulating wall 2e where the guide pin 12 is erected has a larger area than the circumferential direction regulating wall 2d closer to the blade body 4. Since it is configured in this way, when receiving a reaction force from the conductor as described above in the circumferential direction, the load of the sliding body 8 on the circumferential direction regulating wall 2d is reduced, and the load on the circumferential direction regulating wall 2e is increased.

[0035] However, since the area of the circumferential direction regulating wall 2e is larger than that of the circumferential direction regulating wall 2d, the load is dispersed on the circumferential direction regulating wall 2e side compared to the circumferential direction regulating wall 2d, and an increase in frictional force can be prevented. As a result, the resistance in the sliding movement of the sliding body 8 with respect to the main body 2 is reduced, so that the followability of the brush body 10 in contact with the edge of the coating can be maintained in a high state.

[0036] In addition, since the radial regulation wall 2f is arranged parallel to the tangential direction of the circular motion, almost no increase in pressure on the radial regulation wall 2f needs to be considered. Therefore, there is almost no influence on the increase in the sliding friction of the sliding body 8.

[0037] FIG. 5 shows the movable range of the polishing portion 6, and (a) is a plan view showing the state of being arranged at the rear end in the advancing direction of the peeling device, and (b) is a plan view showing the state of being arranged at the front end in the advancing direction of the peeling device. A part of the brush body 10 and the blade body 4 is represented by a hidden line. Also, the tip position of the blade body 4 is represented by a one-dot chain line as point P1, and the tip position of the brush body 10 is represented by a one-dot chain line as point P2.

[0038] As shown in FIG. 5(a), the brush body 10 can be arranged on the rear side in the advancing direction of the peeling device than the blade body 4. Even if the speed at which the blade body 4 advances through the coating changes and the pitch of the helix to be peeled off changes, position correction by the biased sliding body 8 is automatically performed. Thereby, it becomes possible to accurately remove the remaining coating up to the boundary position between the untreated coating and the exposed conductor.

[0039] Also, as shown in FIG. 5(b), according to the configuration according to the present embodiment, the brush body 10 can be arranged on the front side in the advancing direction of the peeling device than the blade body 4. With such a configuration, the brush body 10 can be arranged so as not to form a gap up to the boundary between the untreated coating and the exposed conductor.

[0040] In particular, as shown in Fig. 5(b), since the brush body 10 can be arranged in front of the blade body 4, it is possible to use it only for polishing without using the blade body 4. Also, there is an advantage that the blade body 4 can be protected by arranging the brush body 10 in front of the blade body 4. Thus, the extent to which the brush body 10 is arranged in front of the blade body 4 can be determined by the position of the wall of the main body 2 where the sliding body 8 abuts on the front side, but it can also be adjusted depending on how the difference between the end of the sliding body 8 and the end of the brush body 10 is designed. With the latter configuration, by removing the guide pin 12, it is also possible to improve the degree of freedom in work, such as replacing the sliding body 8 of a different type at the work site.

[0041] Fig. 6 is a schematic diagram showing the positional relationship between the blade body 4 in the cutting progress state and the polishing part 6 (see Fig. 1). Here, the positional relationship between the blade body 4 and the brush body 10 with respect to the electric wire W is schematically shown, and the illustration of other configurations unnecessary for the explanation is omitted.

[0042] Fig. 6 shows a state where the cutting operation is in progress and the exposed length of the conducting wire W2 has not reached the target dimension. At such a work stage, since the covering W1 is peeled off in a spiral shape, an inclination is formed between the position of the preceding blade body 4 and the position of the following brush body 10. The difference D in the longitudinal direction of the electric wire W caused by this inclination is shown in the figure. In order to sufficiently absorb such a difference D, the rear limit position of the sliding body 8 shown in Fig. 5(a) is determined in terms of design. In order to sufficiently absorb such a difference D, the rear limit position of the sliding body 8 shown in Fig. 5(a) is determined in terms of design.

[0043] Fig. 7 is a schematic diagram showing the positional relationship between the blade body 4 in the cutting completed state and the polishing part 6 (see Fig. 1). Here too, similar to the case of Fig. 6, the illustration of other configurations except the positional relationship between the blade body 4 and the brush body 10 with respect to the electric wire W is omitted for convenience.

[0044] In Fig. 7, the tip of the conducting wire W2 abuts against the wall structure provided for determining the target exposed length of the conducting wire W2, and a state is shown where the advancement is stopped and the wire is idling. In a state where the advancement of the electric wire W is restricted in this way, since the blade body 4 orbits at the same position in the longitudinal direction, the edge of the covering W1 is trimmed, and the inclination as shown in Fig. 6 is eliminated. For this reason, the brush body 10 has advanced to the same position as the blade body 4. That is, it is possible to remove the residual covering at the same position where the covering W1 has been peeled off by the blade body 4.

[0045] The configuration described above is an example of the present invention, and furthermore, the following modification examples are also included.

[0046] (1) In the above-described embodiment, as an example of the biasing means for biasing the polishing portion 6 against the direction in which the electric wire W is accommodated and toward the front side in the advancing direction of the wire stripper, a configuration in which a compression spring 18 is provided on the rear side of the main body 2 is shown. However, as long as it is possible to bias the wire stripper in the forward direction in the advancing direction in the same manner, a configuration using a tension spring on the front side may be used.

[0047] (2) In the above-described embodiment, a configuration in which only one polishing portion 6 is provided is shown as an example. However, a configuration in which a plurality of polishing portions 6 that can slide independently of each other are arranged in the circumferential direction may also be used.

[0048] (3) In the above-described embodiment, a configuration using a brush body 10 as an example of the polishing body for removing the residual covering is shown. However, as long as it is possible to remove the residual covering, a friction material other than the brush body may be used.

Industrial Applicability

[0049] The wire stripper of the present invention can accurately follow the edge of the untreated covering, and thus is also useful for a wire stripper in which the pitch changes during helical cutting.

Explanation of Reference Numerals

[0050] 1 Wire stripper 2 Main body 2a Electric wire accommodation port 2b discharge port 2c wire passing hole 2d, 2e circumferential direction regulating walls 2f radial direction regulating wall 4 cutting blade body 6 grinding part 8 sliding body 8a long hole 10 brush body 12 guide pin 14 spacer 16 tool connection part 18 compression spring (biasing means) 20 wall structure D difference L1, L2 distances P1, P2 points W electric wire W1 coating W2 conducting wire

Claims

1. A wire stripper that relatively rotates a blade body around a wire to remove a coating from an end portion, comprising: a polishing portion that is disposed so as to be able to contact the surface of the conductor of the wire and is provided so as to be slidable along the longitudinal direction of the wire; biasing means for biasing the polishing portion against the direction in which the wire is accommodated The wire stripper is characterized by comprising.

2. The wire stripper according to claim 1, wherein the blade body is disposed inside the sliding range of the polishing portion.

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