Wire coating stripping device

Abstract

To provide a wire insulation stripping device that can strip the insulation from an electric wire without damaging the core material of the electric wire. [Solution] The wire insulation stripping device 1 comprises a rotating body 2 having a hole through which the electric wire EW is inserted, and a plurality of blades 3 provided on the rotating body 2 so as to be able to move back and forth toward the rotation axis of the rotating body 2. The wire insulation stripping device 1 also comprises a plurality of contact members 83 that contact a position closer to the tip than the position where the insulation of the electric wire EW inserted into the rotating body 2 is cut. The plurality of contact members 83 are configured to contact the insulation of the electric wire EW from before the plurality of blades 3 contact the insulation of the electric wire EW until the insulation of the electric wire EW is cut.

Description

Technical Field

[0001] The present invention relates to an electric wire coating peeling device for peeling the coating of an electric wire.

Background Art

[0002] Conventionally, an electric wire coating peeling device for peeling the coating of an electric wire has been known (see, for example, Patent Document 1). The coating cable peeling device (electric wire coating peeling device) described in Patent Document 1 includes a rotating body having a hole through which the coating cable (electric wire) is inserted, a plurality of blades provided on the rotating body so as to be slidable toward the rotation axis of the rotating body, a cable holding portion that sandwiches the base end portion of the electric wire inserted through the rotating body, and a stopper that sets a position for abutting the tip end portion of the electric wire inserted through the rotating body to cut the coating of the electric wire. When peeling the coating of an electric wire with this coating cable peeling device, the user inserts the electric wire into the hole of the rotating body, abuts the tip end portion of the electric wire against the stopper, and then sandwiches the electric wire with the cable holding portion. Then, the coating cable peeling device cuts the coating of the electric wire by rotating the rotating body and sliding a plurality of blades toward the rotation axis of the rotating body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the coating cable peeling device described in Patent Document 1, while rotating the rotating body, a plurality of blades are inserted toward the rotation axis of the rotating body. Therefore, due to the bending habit of the electric wire and the force applied to twist the electric wire when peeling the coating of the electric wire, the central axis of the electric wire may deviate from the rotation axis of the rotating body, and as a result, the core material of the electric wire may be damaged.

[0005] The object of the present invention is to provide a wire insulation stripping device that can strip the insulation from an electric wire without damaging the core material of the electric wire. [Means for solving the problem]

[0006] The wire insulation stripping device of the present invention comprises a rotating body having a hole through which a wire is inserted, and a plurality of blades provided on the rotating body so as to be able to move back and forth toward the axis of rotation of the rotating body, and cuts the insulation of a wire by rotating the rotating body and advancing the plurality of blades toward the axis of rotation of the rotating body, wherein the device comprises a plurality of contact members that abut against the wire insulation inserted into the rotating body at a position closer to the tip than the position where the insulation of the wire is cut, and the plurality of contact members are configured to abut against the wire insulation from before the plurality of blades abut the wire insulation until the insulation of the wire is cut.

[0007] With this configuration, the multiple contact members are configured to contact the wire insulation from before the multiple blades contact the wire insulation until the insulation is cut. Therefore, when stripping the wire insulation, the wire insulation stripping device can cut the wire insulation while holding down a position closer to the tip of the wire insulation with the multiple contact members. Consequently, the wire insulation stripping device can strip the wire insulation without damaging the core material of the wire.

[0008] In the present invention, the rotating body is provided with a plurality of holding members that are capable of moving back and forth toward the axis of rotation of the rotating body and that each of the plurality of blades is held by each of the plurality of holding members, and it is preferable that the plurality of contact members are held by each of the plurality of holding members such that they protrude slightly more toward the axis of rotation of the rotating body than the plurality of blades.

[0009] With this configuration, each of the multiple blades and multiple contact members is held by multiple retaining members, so by advancing the multiple retaining members toward the rotation axis of the rotating body, both the multiple blades and multiple contact members can be advanced toward the rotation axis of the rotating body. Furthermore, since the multiple contact members are held by each of the multiple retaining members so as to protrude slightly toward the rotation axis of the rotating body than the multiple blades, by advancing the multiple retaining members toward the rotation axis of the rotating body, they can come into contact with the insulation of the electric wire before the multiple blades. Therefore, the electric wire insulation stripping device can be configured with a simple structure to keep the multiple contact members in contact with the insulation of the electric wire from before the multiple blades come into contact with the insulation until the insulation is cut.

[0010] In the present invention, it is preferable that the multiple holding members hold each of the multiple contact members so that they can move back and forth toward the rotation axis of the rotating body, and that the wire coating stripping device is equipped with an adjustment means to adjust the pressing force of the multiple contact members against the wire coating by adjusting the positions of the multiple contact members.

[0011] With this configuration, the wire insulation stripping device is equipped with an adjustment means that adjusts the pressing force of the multiple contact members against the wire insulation by adjusting the positions of the multiple contact members. Therefore, even when the device is configured to advance both the multiple blades and the multiple contact members toward the rotation axis of the rotating body by advancing the multiple holding members toward the rotation axis of the rotating body, the pressing force of the multiple contact members against the wire insulation can be adjusted, and consequently, the wire insulation can be stripped without hindering the rotation of the rotating body.

[0012] In the present invention, it is preferable that the adjustment means adjusts the pressing force of the multiple contact members to be the same.

[0013] With this configuration, the adjustment means adjusts the pressing force of the multiple contact members to be the same, thereby suppressing misalignment of the central axis of the electric wire and the rotation axis of the rotating body, and consequently, the insulation of the electric wire can be stripped without damaging the core material of the electric wire.

[0014] In the present invention, the adjustment means is preferably a biasing member that biases each of the multiple contact members toward the rotation axis of the rotating body.

[0015] With this configuration, the adjustment means is a biasing member that biases each of the multiple contact members toward the rotation axis of the rotating body. Therefore, the pressing force of the multiple contact members against the insulation of the electric wire can be adjusted with a simple configuration, and consequently, the insulation of the electric wire can be stripped without hindering the rotation of the rotating body. [Brief explanation of the drawing]

[0016] [Figure 1] Front view showing the main part of a wire insulation stripping device according to one embodiment of the present invention. [Figure 2] Side view showing the main parts of a wire insulation stripping device. [Figure 3] Side view showing the main parts of a wire insulation stripping device. [Figure 4] Front view showing the base member and arm. [Figure 5] Front view showing the retaining member that holds the blade. [Figure 6] Top view showing the retaining member that holds the blade. [Figure 7] Side view showing the retaining member that holds the blade. [Figure 8] Cross-sectional view showing the front of the retaining member. [Figure 9] A top view showing the retaining member and various components arranged near the retaining member. [Figure 10] Diagram showing the state in which the wire insulation has been cut. [Figure 11] This diagram shows the state after the contact member has come into contact with the wire's insulation and the cutting of the wire's insulation continues. [Modes for carrying out the invention]

[0017] Hereinafter, an embodiment of the present invention will be described based on the drawings. FIG. 1 is a front view showing a main part of an electric wire coating peeling device according to an embodiment of the present invention. FIGS. 2 and 3 are side views showing the main part of the electric wire coating peeling device. In FIGS. 1 to 3, the vertically upward direction is defined as the +Z axis direction, and two axes orthogonal to this Z axis are defined as the X and Y axes for explanation. The same applies to the following drawings.

[0018] As shown in FIGS. 1 to 3, the electric wire coating peeling device 1 includes a rotating body 2 having a hole through which an electric wire EW is inserted, and four blades 3 provided on the rotating body 2 so as to be able to advance and retreat toward the rotation axis of the rotating body 2. Hereinafter, the blade 3 located on the +Z axis direction side may be referred to as blade 31, the blade 3 located on the +Y axis direction side may be referred to as blade 32, the blade 3 located on the -Z axis direction side may be referred to as blade 33, and the blade 3 located on the -Y axis direction side may be referred to as blade 34. FIG. 2 is a diagram showing a cross section of the electric wire coating peeling device 1 cut along the I-I line of FIG. 1, and FIG. 3 is a diagram showing a cross section of the electric wire coating peeling device 1 cut along the II-II line of FIG. 1.

[0019] The electric wire coating peeling device 1 has a configuration substantially the same as that of the coating cable peeling device described in Patent Document 1. For example, it includes an electric wire holding part (not shown) that sandwiches the base end part (+X axis direction side end part) of the electric wire EW inserted through the rotating body 2, and a stopper (not shown) that abuts against the tip end part (-X axis direction side end part) of the electric wire EW inserted through the rotating body 2 to set the position for cutting the coating of the electric wire EW.

[0020] When peeling the coating of the electric wire EW with this electric wire coating peeling device 1, the user inserts the electric wire EW into the hole of the rotating body 2, abuts the tip end part of the electric wire EW against the stopper, and then sandwiches the electric wire EW with the electric wire holding part. Then, the electric wire coating peeling device 1 rotates the rotating body 2 and advances and retreats the four blades 3 toward the rotation axis of the rotating body 2 to cut the coating of the electric wire EW.

[0021] As shown in Figures 2 and 3, the rotating body 2 comprises a cylindrical inner cylinder 4 provided on the -X axis side and a cylindrical outer cylinder 5 having a flange portion 51 formed on the +X axis side, which houses the inner cylinder 4 inside. Here, the inner cylinder 4 and the outer cylinder 5 are driven by a motor (not shown) to rotate around the X-axis. The outer cylinder 5 is also driven by an actuator (not shown) to slide freely along the X-axis direction.

[0022] Furthermore, the rotating body 2 is fixed to the inner cylinder 4 and includes a rectangular parallelepiped base member 6 having a hole in the center through which an electric wire EW is inserted. This base member 6 rotatably supports four arms 7, which are positioned corresponding to the four blades 3, via pins 61.

[0023] Figure 4 is a front view showing the base member and arm. As shown in Figures 2 to 4, each arm 7 is formed in an L-shape, having a first arm portion 71 that extends radially outward from the rotating body 2, and a second arm portion 72 that extends in the +X axis direction by bending from the tip of the first arm portion 71.

[0024] As described above, the first arm portion 71 is pivotally supported at its base end by a pin 61 of the base member 6. The second arm portion 72 is equipped with a rectangular plate-shaped plate 73 (see Figures 2 and 3) fixed to its base end (the tip of the first arm portion 71). This plate 73 has a disc portion 731 attached to the -X axis side, and this disc portion 731 is in contact with the flange portion 51 of the outer cylinder 5. Furthermore, the second arm portion 72 has a jaw portion 721 formed at its tip, and this jaw portion 721 grips a cylindrical shaft 74. This shaft 74 is fixed to one end in the longitudinal direction of a rectangular plate 75. The other end of the plate 75 is fixed to the holding member 8 that holds the blade 3 mentioned above.

[0025] Figure 5 is a front view showing the retaining member that holds the blade. Figure 6 is a top view showing the retaining member that holds the blade. Figure 7 is a side view showing the retaining member that holds the blade. Specifically, Figures 5 to 7 show the retaining member 8 that holds the blade 31. As shown in Figures 5 to 7, the holding member 8 is formed in the shape of a rectangular plate and has an L-shaped cross-section, comprising a front portion 81 having two screw holes 811 for attaching the blade 3 to the radially inner portion of the rotating body 2, and a rectangular plate-shaped side portion 82 that bends from the front portion 81 and extends toward the -X axis direction.

[0026] Here, as shown in Figures 2 and 3, blade 3 is a plate-shaped blade with one side being an inclined surface and the other side being a flat surface. Blade 32 (blade 34), which is mounted at a position intersecting blade 31 (blade 33), is mounted so that its other side faces the other side, as shown in Figure 2. Blade 33, which is mounted at a position opposite blade 31, is mounted so that its other side is flush with the surface, as shown in Figure 3.

[0027] Figure 8 is a cross-sectional view showing the front portion of the retaining member. Specifically, Figure 8 is a cross-sectional view obtained by cutting the front portion 81 of the retaining member 8 along the XZ plane. As shown in Figures 5-8, the front portion 81 of the retaining member 8 has a through hole 812 formed that penetrates through the rotating body 2 in the radial direction.

[0028] Furthermore, as shown in Figures 2, 3, and 8, the retaining member 8 is inserted through the through hole 812 and includes a cylindrical contact member 83 that contacts the insulation of the electric wire EW. As shown in Figure 8, the contact member 83 is attached to the holding member 8 via two bosses 831, each having a flange inserted into both ends of the through hole 812. The contact member 83 also has flanges at both ends, and the flanges of the bosses 831 and the contact member 83 prevent it from falling out of the through hole 812. The contact member 83 also includes a spring member 832 installed between the flange that contacts the insulation of the electric wire EW and the flange of the boss, and this spring member 832 biases it toward the rotation axis of the rotating body 2. When biased by the spring member 832, the contact member 83 is set to a length that protrudes slightly beyond the blade 3 toward the rotation axis of the rotating body 2 (see Figures 1-3).

[0029] Figure 9 is a top view showing the retaining member and various components arranged near the retaining member. As shown in Figures 5-9, the side portion 82 of the retaining member 8 has a groove 821 formed along the radial direction of the rotating body 2. As shown in Figures 2, 3, and 9, the holding member 8 is fixed to the groove 821 and includes a prismatic guide member 84 that guides the blade 3 when it moves forward and backward toward the rotation axis of the rotating body 2.

[0030] Here, the rotating body 2 is equipped with a guide plate 91 that guides the guide member 84 along the radial direction of the rotating body 2, and this guide plate 91 is fixed to the base member 6 via a plate-shaped support member 9 (see Figures 2 and 3). Furthermore, as shown in Figures 2 and 3, the rotating body 2 is equipped with a damper 10 that is mounted so as to straddle the second arm portion 72 and the support member 9.

[0031] When stripping the insulation from the electric wire EW using this electric wire stripping device 1, the user inserts the electric wire EW through the hole in the rotating body 2, brings the tip of the electric wire EW into contact with the stopper, and then clamps the electric wire EW in the electric wire holding part (see Figure 2). The stopper is a cylindrical member housed inside the inner cylinder 4, and its distance from the multiple blades 3 can be adjusted by moving back and forth along the X-axis direction. By adjusting the position of this stopper, the position at which the insulation of the electric wire EW inserted into the rotating body 2 is cut can be set.

[0032] Figure 10 shows the state in which the insulation of the electric wire has been cut. As shown in Figure 10, the wire insulation stripping device 1 cuts the insulation of the electric wire EW by rotating the inner cylinder 4 and the outer cylinder 5 (see arrow A in the figure) and advancing the four blades 3 toward the rotation axis of the rotating body 2. Specifically, the wire insulation stripping device 1 moves the outer cylinder 5 in the +X axis direction (see arrow B in the figure), thereby advancing the four blades 3 toward the rotation axis of the rotating body 2. The flange portion 51 of the outer cylinder 5 moves in the +X axis direction, pushing out the disc portion 731 of the plate 73 and rotating the arm 7 around the pin 61 (see arrow C in the figure). The arm 7 rotates around the pin 61, advancing the plate 75 and the holding member 8 toward the rotation axis of the rotating body 2 via the shaft 74. The four blades 3 then advance toward the rotation axis of the rotating body 2 together with the holding member 8, cutting the insulation of the wire EW. At this time, the holding member 8 is guided by the guide plate 91 of the support member 9 via the guide member 84, which allows it to advance toward the rotation axis of the rotating body 2.

[0033] Here, the contact member 83, held by the holding member 8, advances toward the rotation axis of the rotating body 2 together with the four blades 3. When biased by the spring member 832, the contact member 83 is set to a length that protrudes slightly further toward the rotation axis of the rotating body 2 than the multiple blades 3, and therefore makes contact with the insulation of the electric wire EW before the multiple blades 3 (see Figure 10).

[0034] Figure 11 shows the state after the contact member has come into contact with the insulation of the electric wire and the cutting of the insulation of the electric wire has continued. After the contact member 83 contacts the insulation of the electric wire EW, the electric wire insulation stripping device 1 moves the outer cylinder 5 in the direction of the +X axis (see arrow B in the figure), as shown in Figure 11, thereby advancing the four blades 3 toward the rotation axis of the rotating body 2. At this time, the contact member 83 retracts toward the inside of the holding member 8 against the biasing force of the spring member 832, and the multiple blades 3 cut the insulation of the electric wire EW.

[0035] Thus, in this embodiment, the multiple contact members 83 are in contact with the wire EW inserted through the rotating body 2 at a position closer to the tip (-X-axis direction) than the position where the insulation of the wire EW is cut. Furthermore, the multiple contact members 83 are configured to contact the insulation of the wire EW from before the multiple blades 3 come into contact with the insulation of the wire EW until the insulation of the wire EW is cut.

[0036] Furthermore, in this embodiment, the multiple holding members 8 are provided on the rotating body 2 so as to be able to move back and forth toward the rotation axis of the rotating body 2, and each of the multiple blades 3 is held by them. Furthermore, in this embodiment, the multiple holding members 8 each hold the multiple contact members 83 so that they can move back and forth toward the rotation axis of the rotating body 2. The multiple contact members 83 are held by each of the multiple holding members 8 so that they protrude slightly more than the multiple blades 3 toward the rotation axis of the rotating body 2.

[0037] Furthermore, the wire insulation stripping device 1 is equipped with a spring member 832 as a biasing member that biases each of the multiple contact members 83 toward the rotation axis of the rotating body 2. This spring member 832 functions as an adjustment means that adjusts the position of the multiple contact members 83 so that the pressing force of the multiple contact members 83 toward the insulation of the electric wire EW is the same. In this embodiment, the adjustment means adjusts the pressing force of the multiple contact members 83 against the insulation of the electric wire EW to be the same, but it is not necessary to adjust them to be the same, and the pressing force of the multiple contact members 83 against the insulation of the electric wire EW may be adjusted individually.

[0038] According to this embodiment, the following actions and effects can be achieved. (1) The multiple contact members 83 are configured to contact the insulation of the electric wire EW from before the multiple blades 3 contact the insulation of the electric wire EW until the insulation of the electric wire EW is cut. Therefore, when the electric wire insulation stripping device 1 strips the insulation of the electric wire EW, it can cut the insulation of the electric wire EW while pressing down on a position closer to the tip than the cutting position of the insulation of the electric wire EW with the multiple contact members 83. Thus, the electric wire insulation stripping device 1 can strip the insulation of the electric wire EW without damaging the core material of the electric wire EW.

[0039] (2) Since each of the multiple blades 3 and the multiple contact members 83 is held by the multiple holding members 8, both the multiple blades 3 and the multiple contact members 83 can be advanced toward the rotation axis of the rotating body 2 by advancing the multiple holding members 8 toward the rotation axis of the rotating body 2. Furthermore, since the multiple contact members 83 are held by each of the multiple holding members 8 so as to protrude slightly more toward the rotation axis of the rotating body 2 than the multiple blades 3, by advancing the multiple holding members 8 toward the rotation axis of the rotating body 2, they can come into contact with the insulation of the electric wire EW before the multiple blades 3. Therefore, the electric wire insulation stripping device 1 can be configured with a simple structure to ensure that the multiple contact members 83 come into contact with the insulation of the electric wire EW from before the multiple blades 3 come into contact with the insulation of the electric wire EW until the insulation of the electric wire EW is cut.

[0040] (3) The wire coating stripping device 1 is equipped with an adjustment means for adjusting the pressing force of the multiple contact members 83 against the coating of the electric wire EW by adjusting the positions of the multiple contact members 83. Therefore, even when the multiple holding members 8 are advanced toward the rotation axis of the rotating body 2, causing both the multiple blades 3 and the multiple contact members 83 to advance toward the rotation axis of the rotating body 2, the pressing force of the multiple contact members 83 against the coating of the electric wire EW can be adjusted, and the coating of the electric wire EW can be stripped without hindering the rotation of the rotating body 2. (4) The adjustment means adjusts the pressing force of the multiple contact members 83 to be the same, thereby suppressing misalignment of the central axis of the electric wire EW and the rotation axis of the rotating body 2, and consequently, the insulation of the electric wire EW can be peeled off without damaging the core material of the electric wire EW. (5) The adjustment means is a spring member 832 that biases each of the multiple contact members 83 toward the rotation axis of the rotating body 2. Therefore, the pressing force of the multiple contact members 83 toward the insulation of the electric wire EW can be adjusted with a simple configuration, and consequently, the insulation of the electric wire EW can be stripped without hindering the rotation of the rotating body 2.

[0041] [Modification of the embodiment] Furthermore, the present invention is not limited to the embodiments described above, and any modifications, improvements, etc., that can achieve the objectives of the present invention are included within the scope of the present invention. For example, in the above embodiment, the multiple contact members 83 were held by each of the multiple holding members 8 such that they protruded further toward the rotation axis of the rotating body 2 than the multiple blades 3, thereby ensuring that the multiple blades 3 contacted the insulation of the electric wire EW from before contacting the insulation until cutting the insulation of the electric wire EW. However, other configurations may be adopted. For example, the positions of the multiple contact members may be actively adjusted to ensure that the multiple blades 3 contact the insulation of the electric wire EW from before contacting the insulation until cutting the insulation of the electric wire EW.

[0042] Furthermore, in the above embodiment, the wire stripping device 1 is configured to advance both the multiple blades 3 and the multiple contact members 83 toward the wire EW by advancing the multiple holding members 8 toward the rotation axis of the rotating body 2. However, the multiple blades 3 and the multiple contact members 83 may be configured to advance individually toward the rotation axis of the rotating body 2. For example, the multiple contact members may not be held by the multiple holding members, but may be positioned at a 45-degree rotation around the rotation axis of the rotating body relative to the multiple blades.

[0043] Furthermore, in the above embodiment, the wire coating stripping device 1 employed a spring member 832 as an adjustment means to adjust the pressing force of the multiple contact members 83 against the coating of the electric wire EW by adjusting the positions of the multiple contact members 83. In contrast, the adjustment means may be configured to adjust the pressing force of the multiple contact members against the coating of the electric wire by actively adjusting the positions of the multiple contact members. Alternatively, the wire coating stripping device 1 may not be equipped with an adjustment means, and the multiple contact members may advance toward the rotation axis of the rotating body together with the multiple blades, thereby increasing the pressing force. [Industrial applicability]

[0044] As described above, the present invention can be widely applied to wire insulation stripping devices for stripping the insulation from electric wires. [Explanation of Symbols]

[0045] 1 Wire coating stripping device 2. Solids of revolution 3 blades 4 Inner cylinder 5. Outer cylinder 6 Base member 7 Arms 8 Retaining member 9 Support members 10 Damper 51 Flange section 61 pins 73 Plates 74 Axis 75 Plate 83 Contact Member 84 Guide member 91 Guide plate 832 Spring member (biasing member, adjustment means) EW Electric Wire

Claims

1. A wire insulation stripping device comprising a rotating body having a hole for inserting an electric wire at its center, and a plurality of blades provided on the rotating body so as to be able to move back and forth toward the rotation axis of the rotating body, wherein the device cuts the insulation of an electric wire by rotating the rotating body and advancing the plurality of blades toward the rotation axis of the rotating body, The rotating body is equipped with a plurality of contact members that contact a position closer to the tip than the position where the insulation of the electric wire inserted through it is cut, A wire insulation stripping device characterized in that the plurality of contact members are configured to contact the wire insulation from before the plurality of blades contact the wire insulation until the wire insulation is cut.

2. In the wire coating stripping device described in claim 1, The rotating body is provided with a plurality of holding members that are capable of moving back and forth toward the axis of rotation of the rotating body and that each of the plurality of blades is held by a plurality of holding members, The wire coating stripping device is characterized in that the plurality of contact members are held by each of the plurality of holding members such that they protrude slightly more than the plurality of blades toward the rotation axis of the rotating body.

3. In the wire coating stripping device described in claim 2, The plurality of holding members hold each of the plurality of contact members so that they can move back and forth toward the rotation axis of the rotating body, The wire insulation stripping device is, A wire coating stripping device characterized by comprising an adjustment means for adjusting the pressing force of the plurality of contact members against the wire coating by adjusting the positions of the plurality of contact members.

4. In the wire coating stripping device described in claim 3, The wire coating stripping device is characterized in that the adjustment means adjusts the pressing force of the plurality of contact members to be the same.

5. In the wire coating stripping device described in claim 4, The wire coating stripping device is characterized in that the adjustment means is a biasing member that biases each of the plurality of contact members toward the rotation axis of the rotating body.

Images