JP7121060B2 - Braid cutting device and braid cutting method - Google Patents

Description

The present invention relates to a braid cutting device and a braid cutting method.

Conventionally, when a braid is included in a cable, the braid is cut off manually after peeling off the sheath. However, in performing processing based on the sheath cutting position of the electric wire, manually setting the electric wire again in the electric wire processing equipment after stripping had a problem in dimensional accuracy. Therefore, for example, Patent Literature 1 proposes a device that cuts a braid without human intervention. In this device, after the braid is pushed open by the braid opening claws, the braid is sandwiched and cut by a punch and a die. Further, Patent Document 2 discloses a device for folding back the braid after the braid is pushed open by a braid opening claw, like the device of Patent Document 1.

JP-A-2002-262427 JP-A-2002-262429

The braid cutting device described in Patent Document 1 cuts the braid by sandwiching it between the edge of the outer circumference of the cylindrical punch and the inner circumference of the die positioned outside the braid. Prior to cutting the braid, this braid cutting device opens the braid by repeatedly pressing the braid against the inner skin, which is an insulating layer, a plurality of times with the braid opening claw. For this reason, the braid cutting method using the braid cutting apparatus described in Patent Document 1 is effective for coaxial wires whose insulation layer can be pushed, but for electric wires whose insulation layer cannot be pushed, that is, the braid and wire core. In the case of an electric wire without an insulating layer between them, there is a risk that the wire core (wire rod) will be damaged by the pressing of the braid opening claw. Therefore, the braid cutting method described in Patent Literature 1 cannot be applied to shielded wires in which the wire core exists directly under the braid. In addition, when the wire constituting the braid is thin, the wire enters between the punch and the die and cannot be properly cut. Furthermore, in the braid turn-back device described in Patent Document 2 as well, in order to turn back the braid, the braid opening claw is pressed against the inner cover to open the braid. , the core cannot be pushed and cannot be applied.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances described above, and an object of the present invention is to provide a braid cutting device and a braid cutting method capable of automatically folding back and cutting the braid without damaging the wire. be.

In order to achieve the above object, a braid cutting device and a braid cutting method according to the present invention are characterized by the following (1) to ( 10 ).
(1) A shielded wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly stripped off at a tip portion to expose the braid, and the shielded wire is gripped. a wire gripping portion for
a rotating brush that is in contact with the exposed braid and rotates rearward from the tip of the shielded wire about an orthogonal direction orthogonal to the extending direction of the shielded wire to turn back the braid;
a cutting blade for cutting the braid folded back on the sheath by the rotating brush;
with
a block sandwiching at least the end of the folded braid between the sheath and the sheath;
with
The braid cutting device, wherein the cutting blade cuts the braid sandwiched between the blocks.
(2) the shielded wire is provided with a ring terminal on the outer periphery of the sheath at the distal end portion;
The braid cutting device according to (1) above, wherein the cutting blade cuts the braid folded back on the annular terminal.
(3) The rotating brush comes into contact with the exposed braid, rotates from the rear toward the tip of the shielded wire, and then rotates from the tip toward the rear to fold back the braid. The braid cutting device according to (1) or (2).
( 4 ) A shielded electric wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly peeled off at the tip portion to expose the braid, and the shielded wire is gripped. a wire gripping portion for
a rotating brush that is in contact with the exposed braid and rotates rearward from the tip of the shielded wire about an orthogonal direction orthogonal to the extending direction of the shielded wire to turn back the braid;
a cutting blade for cutting the braid folded back on the sheath by the rotating brush;
with
The shielded wire is provided with a ring terminal on the outer periphery of the sheath at the tip portion,
The cutting blade cuts the braid folded back on the annular terminal,
The braid cutting device, wherein the cutting blade is a circular rotary blade that rotates about a direction along the extension direction, and cuts the braid by sandwiching the braid with the annular terminal.
( 5 )
The braid cutting device according to ( 4 ) above, wherein three cutting blades are provided around the shielded wire, and the axis along the extending direction rotates around the shielded wire.
( 6 ) The braid cutting device according to ( 5 ) above, including a mechanism for varying the force with which the cutting blade is pressed against the annular terminal.
( 7 ) A shielded wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly peeled off at the tip portion to expose the braid, and the shielded wire is gripped. a wire gripping portion for
a rotating brush that is in contact with the exposed braid and rotates rearward from the tip of the shielded wire about an orthogonal direction orthogonal to the extending direction of the shielded wire to turn back the braid;
a cutting blade for cutting the braid folded back on the sheath by the rotating brush;
with
The shielded wire is provided with a ring terminal on the outer periphery of the sheath at the tip portion,
The cutting blade cuts the braid folded back on the annular terminal,
a revolving brush contacting the braid folded back on the annular terminal and rotating about the extending direction;
The braid cutting device, wherein the cutting blade cuts the folded braid moved by the revolving brush.
( 8 ) A shielded wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly peeled off at the tip portion to expose the braid, and the shielded wire is gripped. a wire gripping portion for
a rotating brush that is in contact with the exposed braid and rotates rearward from the tip of the shielded wire about an orthogonal direction orthogonal to the extending direction of the shielded wire to turn back the braid;
a cutting blade for cutting the braid folded back on the sheath by the rotating brush;
A guide hole through which the shielded wire can be inserted is provided in a part of the flat plate, and the shielded wire is guided on the front end side of the gripped position of the shielded wire by the wire gripping portion to guide the shielded wire to the wire gripping portion. a wire guide with a variable distance between;
with
The braid cutting device, wherein the flat plate approaches the wire gripping portion by being pressed against a portion of the processing device.
( 9 ) The braid cutting device according to ( 8 ), wherein the wire guide has a cylindrical braid protection portion that is provided around the guide hole on one surface of the flat plate and divided into two in the circumferential direction.
(10) A shielded wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly peeled off at the tip portion to expose the braid, and the shielded wire is gripped. death,
A rotating brush is brought into contact with the exposed braid, and rotated backward from the tip of the shielded wire about an orthogonal direction perpendicular to the extending direction of the shielded wire, thereby folding back the braid onto the sheath. ,
At least the end of the folded braid is sandwiched between the sheath and the block,
A method of cutting a braid, wherein the braid folded over the sheath and sandwiched between the blocks is cut with a cutting blade.

According to the braid cutting device having the configuration (1) and the braid cutting method having the configuration ( 10 ), the rotating brush cuts the braid folded back on the sheath, thereby cutting the insulating layer between the braid and the wire rod. Even if there is no wire, the braid can be cut without pressing the wire. Therefore, the braid can be automatically folded back and cut without damaging the wire. In the present disclosure, a wire (a wire core, a wire core) means a communication wire including a signal wire and a coating that covers the signal wire.
Furthermore, since the braid is cut while at least the end portion thereof is sandwiched between blocks, even a thin braid can be reliably cut.

According to the braid cutting device having the above configuration (2), the braid folded back on the annular terminal is cut, so that the cutting blade does not come into contact with the sheath.

According to the braid cutting device having the above configuration ( 3 ), the rotating brush in contact with the braid rotates from the rear to the tip of the shielded wire to loosen the braid, and then the brush rotates in the opposite direction. Fold back the braid. Depending on the pitch and diameter of the braid, it may be difficult to fold back the braid in a braided state.

According to the braid cutting device having the above configuration ( 4 ), the braid can be cut without damaging the sheath by rotating the circular rotary blade while sandwiching the braid between it and the annular terminal.

According to the braid cutting device having the configuration ( 5 ), the three circular rotary blades revolve around the shielded wire, so that even if the annular terminal is slightly elliptical, the cutting depth may be large. Therefore, the braid can be uniformly cut over the entire circumference of the ring-shaped terminal without unevenness in places where the cut depth is large depending on the position of the ring-shaped terminal in the circumferential direction.

According to the braid cutting device having the configuration ( 6 ), the force for pressing the cutting blade against the sleeve can be varied by means of a mechanism such as a spring or a cylinder. Therefore, when the elliptical length-to-horizontal difference of the sleeve is large, the depth of cut by the cutting blade can be made variable to overcome the difference in the depth of cut due to the elliptical length-to-horizontal difference of the sleeve.

According to the braid cutting device having the above configuration ( 7 ), by cutting the braid mechanically moved by the revolving brush, it is possible to reliably cut the braid while preventing uncut portions.

According to the braid cutting device having the above configuration ( 8 ), when the shielded wire is to be inserted into the processing device, the flat plate of the wire guide comes into contact with the processing device and is pushed toward the wire holding portion. That is, the shielded wire is pushed out toward the processing device by the wire gripping portion. Therefore, even if the shielded wire is gripped not at the tip but at the middle or end, the wire guide can guide the tip of the wire to correct its posture, so that the shielded wire can be inserted straight into the processing apparatus.

According to the braid cutting apparatus having the above configuration ( 9 ), the electric wire can be fed into the processing device while the braid is protected by providing the electric wire guide with the braid protection portion. Further, when processing, the braided portion to be processed can be exposed by pushing the braid protecting portion (wire guide) toward the wire gripping portion.

According to the present invention, it is possible to automatically fold back and cut the braid without damaging the wire.

The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following detailed description of the invention (hereinafter referred to as "embodiment") with reference to the accompanying drawings. .

FIG. 1 is a perspective view showing a braid processing apparatus according to one embodiment of the present invention. 2 is a perspective view showing a main part of the wire setting device shown in FIG. 1. FIG. FIG. 3 is a diagram for explaining the operation of the wire setting device. 4 is a perspective view showing a main part of the brush hogging device shown in FIG. 1. FIG. FIG. 5 is a diagram (1) for explaining the operation of the brush hogging device. FIG. 6 is a diagram (2) for explaining the operation of the brush-hogging device. 7 is a perspective view of the braid cutting device shown in FIG. 1. FIG. FIG. 8 is a perspective view showing the essential parts of the braid cutting device. FIG. 9 is a diagram showing the relationship between the braid cutting blade of the braid cutting device and the sleeve. FIG. 10 is a diagram showing the brush mechanism of the braid cutting device. FIG. 11 is a diagram showing a state in which the shield wire is gripped and the block is closed in the braid cutting device. FIG. 12 is a diagram showing a state in which the braid cutting blade is closed in the braid cutting device. FIG. 13 is a cross-sectional view of the essential parts showing a state in which the braid cutting blade is closed in the braid cutting device. FIG. 14 is a diagram showing a state in which the braid cutting blade revolves in the braid cutting device. FIG. 15 is a diagram showing a state in which the revolving brush is closed and revolving in the braid cutting device. FIG. 16 is a diagram showing a state in which the revolving brush, the braid cutting blade, and the block are opened in the braid cutting device. FIG. 17 is a perspective view showing a braid cutting device according to another embodiment of the invention.

Specific embodiments relating to the present invention will be described below with reference to each drawing. A braid cutting device and a braid cutting method for cutting and folding back a braid at the end of a shielded wire will be described below.

FIG. 1 is a perspective view showing a braid processing apparatus 1 according to one embodiment of the present invention. As shown in FIG. 1 , the braid processing device 1 includes an electric wire setting device 2 , a brush hogging device 3 , a braid cutting device 4 and a conveying device 8 . The objects to be processed by the braid processing apparatus 1 are two wires 101 (core wires), a braid 103 covering the wires 101, a sheath 104 covering the braid 103, and a metal annular terminal externally fitted at a predetermined position on the sheath 104. and a shielded wire W (see FIG. 8). The wires 101 are communication lines each having a signal line and a coating that covers the signal lines, and the two wires 101 are arranged in parallel without being twisted together. In the present embodiment, front/rear, left/right, and up/down directions refer to front/rear, left/right, and up/down directions of the braid processing apparatus 1 as shown in FIG. 1 unless otherwise specified.

The wire setting device 2 supplies the shielded wire W set by the operator to the brush hogging device 3 and the braid cutting device 4 . The wire setting device 2 is attached to the conveying device 8 via the attachment plate 81 . The electric wire setting device 2 is sequentially moved by the conveying device 8 to respective positions of the electric wire setting module, the brush hogging device 3, and the braid cutting device 4, which are arranged in parallel in the horizontal direction and will be described later. When the operator sets the shielded wire W with the braid 103 exposed by stripping the sheath 104 at the tip portion to the wire setting device 2 , the subsequent processing is automatically performed by the braid processing device 1 .

The brush hogging device 3 brings a wheel brush 31 (rotating brush) into contact with the exposed braid 103 at the tip portion of the shielded wire W set in the wire setting device 2 and rotates it from the rear toward the tip, thereby removing the braid. Loosen 103. By loosening the braid 103 with the wheel brush 31, the metal wire forming the braid 103 can be straightened. If the braid 103 in a braided state is cut, variations in wire length increase. However, by cutting the metal wires of the braid 103 in a straightened state, variations in wire length can be suppressed. In addition, the brush hogging device 3 brings the exposed braid 103 into contact with the wheel brush 31 (rotating brush) and rotates it in the opposite direction, that is, rotates it backward from the tip of the shield wire W, so that the braid 103 is sheathed. Fold over 104 (sleeve 105). By unraveling the braid 103 and then folding it back, the braid 103 can be reliably folded back. However, depending on the pitch and braid diameter of the braid 103, the braid 103 in a braided state before unraveling can be folded back.

The braid cutting device 4 cuts the braid 103 folded back on the sheath 104 (sleeve 105 ) at the tip of the shielded wire W to a predetermined length from the end of the sleeve 105 .

2 is a perspective view showing a main part of the wire setting device 2 shown in FIG. 1, and FIG. 3 is a diagram for explaining the operation of the wire setting device 2. FIG. FIG. 2 shows the wire setting device 2 in a state before the shielded wire W is placed and chucked, and FIG. 2.

As shown in FIGS. 1 and 2, the wire setting device 2 is attached to a flat plate-shaped base 21, a fixing portion 22 fixed on the base 21, and the fixing portion 22 so as to be movable in the front-rear direction. and a wire gripping portion 2A and a wire guide 2B provided in the moving portion 23. As shown in FIG.

The wire gripping portion 2A has a plate 24 fixed to the upper surface of the moving portion 23, and a pair of blocks 25 provided on the plate 24 and having a substantially rectangular parallelepiped shape. The pair of blocks 25 are movable in the left-right direction along rails 24a on the plate 24, and are moved so as to approach and separate from each other by a drive unit (not shown). Clamps 26a and 26b are attached to the front and rear surfaces of each block 25, respectively.

On the front surface of the pair of clamps 26a, a wire holding portion 27a having recesses 27a1 for guiding the shield wire W is fixedly arranged on the front side of the rail 24a. On the rear surface of the pair of clamps 26b, an electric wire holding portion 27b is fixedly arranged on the rear side of the rail 24a. The wire holding portion 27b has a recess 27b1 that guides the shielded wire W, and functions as a sensor portion that detects that the shielded wire W is placed in the recessed portion 27b1. Block 25 and clamps 26a and 26b each have holes through which four shafts 2B2, which will be described later, can be inserted.

The pair of clamps 26a have a concave portion 26a1 in the right clamp 26a and a convex portion 26a2 in the left clamp 26a at positions facing each other. The pair of clamps 26b has the same configuration as the pair of clamps 26a. By bringing the pair of blocks 25 close (closed), the pair of clamps 26a come close and the pair of clamps 26b come close (close). By closing the clamps 26a and 26b, the shielded wire W held by the wire holding portions 27a and 27b is gripped between the concave portion 26a1 and the convex portion 26a2 and between the concave portion and the convex portion of the clamp 26b. be.

The wire guide 2B includes a pair of tip plates 2B1, two shafts 2B2 extending rearward from each tip plate 2B1, and a pair of blocks 2B3 fixed to the rear ends of the two shafts 2B2. Prepare. Also, the wire guide 2B includes two shafts 2B4 and a braid protector 2B5. Each shaft 2B2 passes through the block 25 and the clamps 26a, 26b in the front-rear direction and is movable relative to them. Block 25 and block 2B3 are connected to each other through shaft 2B4 containing a spring so as to be able to approach and separate from each other.

The pair of tip plates 2B1 has a substantially trapezoidal body portion 2B1a when viewed in the front-rear direction, and an extension portion 2B1b extending from the body portion 2B1a in directions facing each other. Semicircular recesses 2B1c that are recessed in a direction away from each other are provided at positions of the extending portions 2B1b facing each other. Semi-cylindrical braided protection portions 2B5 extending forward are provided at the positions of the recesses 2B1c in the pair of tip plates 2B1. By bringing the pair of blocks 25 close to each other, the pair of tip plates 2B1 come close to each other, and the two recesses 2B1c and the two braid protection portions 2B5 surround the shield wire W with the braid 103 exposed at the tip. The two braid protection parts 2B5 are closed to cover the entire circumference of the braid 103 exposed from the sheath 104, thereby protecting the braid 103 while inserting the shield wire W into the brush hogging device 3 and the braid cutting device 4 (processing device). can be put in.

The setting of the shielded wire W to the wire setting device 2 by the operator is performed in a wire setting module (not shown). The electric wire setting module is provided with a contact-type electric wire tip detection unit on the front side of the electric wire setting device 2 . The operator places the shielded wire W between the recesses 27a1 and 27b1 of the wire holding portions 27a and 27b of the wire setting device 2 and between the two recesses 2B1c of the tip plate 2B1. Detection by the wire holding portion 27b is performed by placing the shield wire W in the concave portion 27b1. When the operator pushes the shielded wire W forward to a predetermined position, detection is performed by the wire tip detector. When these detections are performed, the wire setting device 2 closes the pair of blocks 25 and chucks the shield wire W with the wire gripping portion 2A (see FIG. 3). At this time, the shielded wire W is guided by the wire guide 2B and its posture is corrected. Also, the shield wire W is desirably chucked so that the tip of the braid 103 does not protrude from the braid protection portion 2B5.

The shielded wire W set in the wire setting device 2 is supplied to the processing device (the brush hogging device 3 in FIG. 3) as shown in FIG. In the wire setting device 2, the moving part 23 moves backward (in the wire insertion direction indicated by the arrow D in FIG. 3) at a predetermined position in front of the brush hogging device 3 moved by the conveying device 8, so that the wire gripping part 2A and the wire holding part 2A The wire guide 2B approaches the brush hogging device 3 (progresses in the wire insertion direction D). When the tip plate 2B1 of the wire guide 2B hits the stopper 39 of the brush hogging device 3, the position of the wire guide 2B in the front-rear direction is fixed, and only the wire gripping portion 2A moves further. That is, the front surface (wire holding portion 27a) of the wire gripping portion 2A and the tip plate 2B1 are close to each other, and the shield wire W gripped by the wire gripping portion 2A protrudes forward from the braid protecting portion 2B5. Then, the shield wire W is introduced into the inside of the brush hogging device 3 (between the wheel brushes 31, 31).

Thus, when the shielded wire W is to be inserted into the brush hogging device 3, the tip plate 2B1 of the wire guide 2B abuts against the stopper 39 and is pushed toward the wire gripping portion 2A. That is, the shielded wire W is pushed out toward the brush hogging device 3 by the wire gripping portion 2A. Therefore, even if the shield wire W is gripped not at the tip but at the middle or end, the wire guide 2B guides the shield wire W to correct its posture, so that the shield wire W can be straightly inserted into the brush hogging device 3.例文帳に追加Further, when processing the braid 103, the braid 103 portion to be processed can be exposed by pushing the braid protection portion 2B5 toward the wire gripping portion 2A.

4 is a perspective view showing a main part of the brush hogging device 3 shown in FIG. 1, and FIGS. 5 and 6 are diagrams for explaining the operation of the brush hogging device 3. FIG. As shown in FIGS. 1 and 4, the brush hogging device 3 includes two wheel brushes 31, two brush holding portions 32, two brackets 33, two brush driving portions 34, a brush mounting block 35, A drive unit 36 and a rotating shaft housing 37 are provided. The brush hogging device 3 also includes a spacer 37 a , a base 37 b , two pillars 38 and a stopper 39 . The shield wire W is inserted into the brush hogging device 3 by the wire setting device 2 and arranged between the two wheel brushes 31 .

The wheel brush 31 is a brush made of a material capable of loosening the metal wire forming the braid 103 and having a vertically rotating shaft. The rotating shaft of the wheel brush 31 is coupled to the rotating shaft of the brush driving section 34 via the brush holding section 32 and the bracket 33 . The bracket 33 is a rectangular plate that is bent to have a substantially L-shape. can be attached to As shown in FIG. 4 , the right wheel brush 31 and the left wheel brush 31 rotate (rotate) counterclockwise and clockwise, respectively, by the brush driving section 34 . Also, the two wheel brushes 31 can be moved toward and away from each other by a drive unit (not shown). When the shielded wire W is inserted between the two wheel brushes 31 , the two wheel brushes 31 move closer to the shielded wire W and are pressed against the braid 103 .

The brush mounting block 35 has a substantially rectangular parallelepiped shape, and the rotating shaft of the drive unit 36 is connected via a rotating shaft accommodated in a rotating shaft housing 37 to the central position of the rear surface in the left-right direction and the front-rear direction. The brush mounting block 35 has a front end guide 35a, which is a funnel-shaped concave portion, for guiding the front end of the shield wire W at the center position in the left-right direction and the front-rear direction of the front surface. The shielded wire W passes between the two wheel brushes 35 and its tip is accommodated in the tip guide 35a. When the brush mounting block 35 is rotated by the rotational force from the driving portion 36, the two wheel brushes 31 rotate (revolve) in the left-right direction around the shield wire W as shown in FIG.

The rotary shaft housing 37 is arranged between the brush mounting block 35 and the driving portion 36, and placed on a flat base 37b via a spacer 37a. In front of the base 37b, two pillars 38 are erected apart from each other, and a stopper 39 is constructed between the two pillars 38. As shown in FIG. The stopper 39 has an L-shape formed by bending a strip plate at the center of the short side. Both ends of the stopper 39 are screwed and fixed to the two posts 38 at arbitrary positions in the vertical direction. The wire guide 2B (tip plate 2B1) of the wire setting device 2 abuts against the stopper 39, and the shielded wire W gripped by the wire gripping portion 2A is inserted into the brush hogging device 3, and the tip of the shielded wire W is pushed into the tip guide. Housed within 35a.

As described above, in the brush hogging device 3, the wheel brush 31 contacts the exposed braid 103, and rotates from the rear to the tip of the shielded wire W about the orthogonal direction orthogonal to the extending direction (front-rear direction) of the shielded wire W. Rotate (rotate) toward. In addition, the wheel brush 31 rotates (revolves) around the extension direction of the shield wire W with the axis of rotation. Therefore, the wheel brush 31 rotates and is pressed against the braid 103 of the shield wire W, so that the braid 103 on the contact surface is loosened, and further, the wheel brush 31 revolves to loosen the entire circumference of the shield wire W without leaving any braid. be able to.

As shown in FIG. 6, in the brush hogging device 3, the wheel brush 31 is rotated in the opposite direction to that shown in FIG. It can be folded over the sheath 104 . Depending on the pitch and braid diameter of the braid 103, it may be difficult to fold back the braid 103 in a braided state. In the brush hogging device 3, depending on the pitch and braid diameter of the braid 103, the braid 103 in the braided state can be folded back without loosening the braid 103. FIG.

7 is a perspective view of the braid cutting device 4 shown in FIG. 1, and FIG. 8 is a perspective view showing a main part of the braid cutting device 4. As shown in FIG. The shielded wire W whose braid 103 is folded back onto the sheath 104 by the brush hogging device 3 (wheel brush 31) is held by the wire setting device 2 and moved to a predetermined position in front of the braid cutting device 4 by the conveying device 8. be. The shielded wire W is inserted into the braid cutting device 4 by the wire setting device 2 . At this time, the tip plate 2B1 of the wire guide 2B hits a stopper (not shown) provided on the front side of the braid cutting device 4, and the position of the wire guide 2B in the front-rear direction is fixed. As shown in FIGS. 1 and 8, the braid cutting device 4 includes a flat plate-shaped base 41, a substantially rectangular parallelepiped fixing portion 42 fixed to the base 41, and a substantially rectangular parallelepiped standing on the upper surface of the fixing portion 42. , a pair of wire gripping portions 44, and a pair of blocks 46.

A pair of wire gripping portions 44 are attached to the upper portion of the support portion 43 via a pair of opening/closing portions 45 . The opening/closing portion 45 is pivotally supported by the support portion 43 at its lower portion and rotates with respect to the support portion 43 . Therefore, the pair of wire gripping portions 44 are closed by rotating the pair of opening/closing portions 45 so as to approach each other, and the shield wire W is gripped between the pair of wire gripping portions 44 . Further, by rotating the pair of open/close portions 45 away from each other, the pair of wire gripping portions 44 are opened to release the gripping of the shield wire W (see FIG. 11). Since the shielded wire W is gripped by the wire gripping portion 2A of the wire setting device 2 and guided by the wire guide 2B to be inserted into the braid cutting device 4, the pair of wire gripping portions 44 can be omitted.

A pair of blocks 46 each have a semi-cylindrical shape obtained by cutting a thick hollow cylindrical member along the center of a circle, and house shield wires W inside when the pair of blocks 46 are closed. The pair of blocks 46 are attached in parallel to the pair of wire gripping portions 44 on the upper portion of the support portion 43 via the pair of opening/closing portions 47 on the rear side of the pair of wire gripping portions 44 . The opening/closing portion 47 is pivotally supported by the support portion 43 at its lower portion and rotates with respect to the support portion 43 . Therefore, the pair of blocks 46 is closed by rotating the pair of opening/closing portions 47 so as to approach each other, and the shield wire W is sandwiched between the pair of blocks 46 . A pair of closed blocks 46 accommodate the shield wire W while sandwiching the ends of the braid 103 folded back on the sleeve. Further, the pair of blocks 46 are opened by rotating the pair of opening/closing portions 45 so as to separate from each other, and the sandwiching of the shield wire W is released (see FIG. 11).

In addition, the braid cutting device 4 includes three braid cutting blades 48, three blade holding portions 49, three link bars 50, a link supporting portion 51 shown in FIG. 12, a shaft 52, a shaft holding portion 53, and a drive unit 54 and a drive unit 55 .

The braid cutting blade 48 is a circular rotary blade that rotates around a direction along the extending direction of the shield wire W, and is arranged at a position that abuts on the rear end face of the block 46 . The three braid cutting blades 48 are rotatably supported by the three blade holders 49 and cut the braid 103 folded back on the sleeve 105 by rotating (see FIG. 8). By sandwiching the braid 103 with the sleeve 105 and rotating the braid cutting blade 48 , the braid can be cut without damaging the sheath 104 .

The blade holding portion 49 has a substantially rectangular parallelepiped shape, and one end surface (front surface) in the longitudinal direction is extended to form a blade mounting portion 49a for mounting the braid cutting blade 48 thereon. A link bar 50 is rotatably supported on the other longitudinal end surface (rear surface) of the blade holding portion 49 . A slide portion 61 that can slide along the radial direction of the shielded wire W is attached to the front surface of the blade holding portion 49 .

The three link bars 50 link and connect the three blade holding portions 49 and the link support portions 51 (see FIG. 12). The link support portion 51 is a member in which three bars extending radially at equal intervals are connected at the center, and has a substantially Y shape when viewed in the front-rear direction. A hole through which a shaft 52 (see FIG. 12) is inserted is provided in the center of the link support portion 51 . The shaft 52 has a front end fixed to the link support portion 51 and a rear end connected to the shaft holding portion 53 . The shaft holding portion 53 moves the shaft 52 in the front-rear direction by being moved in the front-rear direction by a driving portion 54 such as an air cylinder. When the shaft 52 is moved rearward, the link support portion 51 is moved rearward, and the three blade holding portions 49 move closer to the shield wire W via the three link bars 50 . When the three blade holding portions 49 approach the shielded wire W, the three braid cutting blades 48 are closed and come into contact with the shielded wire W (the braid 103 folded back on the sleeve 105).

As shown in FIG. 12, the shaft 52 held by the shaft holding portion 53 passes through the driving portion 55, the moving portion 59, and the link base 56 which are provided in parallel in the front-rear direction. connected to The drive unit 55 accommodates a motor that rotates in the left-right direction. The L-shaped moving portion 59 is movable in the front-rear direction with respect to the fixed portion 42 and has an L-shape when viewed in the left-right direction. The link base 56 is a circular plate material when viewed in the front-rear direction. The shaft 52 is connected to the rotating shaft of the motor in the drive section 55 , rotates in the horizontal direction as the motor rotates, and is attached to the center of the link support section 51 .

Three substantially rectangular parallelepiped plates 57 are erected on the link base 56 (arranged along the front-rear direction). The plate 57 is provided with a slide portion 58 that slides along one side on the front side. The slide portion 58 is attached to one side surface of the blade holding portion 49 and enables the blade holding portion 49 to slide with respect to the plate 57 . The plate 57 , the slide portion 58 , and the blade holding portion 49 constitute a mechanism for varying the force with which the braid cutting blade 48 is pressed against the sleeve 105 . By making the force for pressing the braided cutting blade 48 against the sleeve 105 variable, the depth of cut by the cutting blade is made variable when the elliptical longitudinal-lateral difference of the sleeve 105 is large. Differences can be overcome.

A slide portion 61 having a revolving brush 62 attached to one end is provided on the front surface of each blade holding portion 49 . The slide portion 61 is slidable with respect to the blade holding portion 49 and moves the revolving brush 62 along the radial direction of the shield wire W. As shown in FIG.

The revolving brush 62 is linearly provided along the extending direction of the shield wire W and is made of the same material as the wheel brush 31, for example. After the braid 103 is cut by the braid cutting blade 48, the revolving brush 62 comes into contact with the braid 103 folded back on the sleeve 105 as shown in FIG. Rotates (revolves) around the extension direction of

By rotating the shaft 52 in the left-right direction, the link support portion 51 revolves, and the three braid cutting blades 48 attached to the link support portion 51 via the link bars and the blade holding portions 49 revolve. At this time, the plate 57 attached to the blade holding portion 49 via the slide portion 58 and the link base 56 fixing the plate 57 also revolve. Further, the revolving brush 62 attached to the blade holding portion 49 via the slide portion 61 also revolves. In this way, three revolving brushes 62, three slides 61, three blade holders 49, three braid cutting blades 48, three link bars 50, link supports 51, three slides 58, three The plate 57 and the link base 56 constitute a rotating mechanism. This rotating mechanism rotates (revolves) around the extending direction of the shield wire W as the shaft 52 rotates.

FIG. 9 is a diagram showing the relationship between the braid cutting blade 48 of the braid cutting device 4 and the sleeve 105, and schematically shows changes in cutting depth when the three braid cutting blades 48a, 48b, and 48c revolve. show. When the revolution angle shown in FIG. 9A is 0°, the cutting depth of the braid cutting blade 48a is shallow (in contact with the sleeve 105), and the braid cutting blades 48b and 48b The cutting depth of 48c is large. When the revolution angle shown in FIG. 9B is 90°, the cutting depth of the braid cutting blades 48b and 48c is shallow, and the cutting depth of the braid cutting blade 48a on the right side of the sleeve 105 is large. When the revolution angle shown in FIG. 9C is 180°, the cutting depth of the braided cutting blade 48a is shallow, and the cutting depths of the braided cutting blades 48b and 48c on the upper left and right sides of the sleeve 105 are large. When the revolution angle shown in FIG. 9D is 270°, the cutting depth of the braid cutting blades 48b and 48c is shallow, and the cutting depth of the braid cutting blade 48a on the left side of the sleeve 105 is large. As described above, even if the sleeve is somewhat elliptical, the three braid cutting blades 48 (48a, 48b, 48c) revolve, so that the depth of cut may be large as a whole. Therefore, the braid cutting blade 48 can uniformly cut the braid 103 along the entire circumference of the sleeve 105 without biasing the portions where the cutting depth is large depending on the position of the sleeve 105 in the circumferential direction.

The operation of the braid cutting device 4 configured as above will be described. FIG. 11 is a diagram showing a state in which the shield wire W is gripped and the pair of blocks 46 are closed in the braid cutting device 4. As shown in FIG. In the braid cutting device 4, when the shielded wire W is arranged at a predetermined position by the wire setting device 2, the shielded wire W is gripped by the pair of wire gripping portions 44, and the pair of blocks 46 are closed. At this time, at least the end of the braid 103 folded over the sleeve 105 is sandwiched between the blocks 46 .

FIG. 12 is a diagram showing a state in which three braid cutting blades 48 are closed in the braid cutting device 4. FIG. FIG. 13 is a cross-sectional view of the essential parts of the braid cutting device 4, showing a state in which the three braid cutting blades 48 are closed. and the wire rod 101 are viewed from the side. By moving the shaft 52 rearward, the braid cutting blade 48 held by the blade holding portion 49 is closed so as to come into contact with the shield wire W. As shown in FIG. As shown in FIG. 13, the braid 103 is sandwiched between the braid cutting blade 48 and the block 46, and the braid cutting blade 48 rotates (rotates) to cut the braid 103, so that even the thin braid 103 can be reliably cut.

FIG. 14 is a diagram showing a state in which the braid cutting blade 48 revolves in the braid cutting device 4. As shown in FIG. As shown in FIG. 14, the shaft 52 is rotated left and right to cause the link support portion 51 to revolve, and the braid cutting blade 48 attached to the link support portion 51 via the link bar 50 and the blade holding portion 49. revolve. That is, the braid cutting blade 48 revolves (rotates forward and backward) in the horizontal direction around the extension direction of the shield wire W as an axis. By revolving the three braid cutting blades 48, the braid 103 can be evenly cut along the circumferential direction of the shield wire W.

FIG. 15 is a diagram showing a state in which the revolving brush 62 is closed and revolving in the braid cutting device 4 . After cutting the braid 103 , the pair of blocks 46 are opened, and the three revolving brushes 62 are closed and pressed against the uncut braid 103 on the sleeve 105 . Further, the position of the shaft holding portion 53 in the longitudinal direction does not change from the position shown in FIG. 14, and the three braid cutting blades 48 remain closed. In this state, the three revolving brushes 62 and the three braid cutting blades 48 revolve (normally and reversely) about the extending direction of the shield wire W as an axis. As a result, the braid cutting blade 48 rotates (rotates) while the revolving brush 62 physically moves the uncut braid 103 on the sleeve 105 , thereby reliably cutting the braid 103 .

FIG. 16 is a diagram showing a state in which the revolving brush 62, the braid cutting blade 48, and the block 46 are opened in the braid cutting device 4. FIG. After cutting the braid 103 is completed, the three revolving brushes 62, the three braid cutting blades 48 and the pair of blocks 46 are opened. Then, the shielded wire W for which the braid 103 has been folded back and cut is taken out by opening the pair of wire gripping portions 44 .

As described above, according to the braid processing apparatus 1 of the present embodiment, the braid 103 folded back onto the sleeve 105 by the wheel brush 31 is cut by the braid cutting blade 48 . As a result, the braid 103 can be cut without pressing the wire 101 even in the shielded wire W in which no insulating layer exists between the braid 103 and the wire 101 . Therefore, the braid processing device 1 (braid cutting device 4) can automatically fold back and cut the braid 103 without damaging the wire rod 101 . Since the braid cutting device 4 cuts the braid 103 folded back on the sleeve 105 , the braid cutting blade 48 does not touch the sheath 104 . Further, since the braid cutting device 4 cuts the braid 103 while sandwiching the braid 103 between the pair of blocks 46, even the thin braid 103 can be reliably cut.

Further, according to the braid processing apparatus 1 of the present embodiment, the wheel brush 31 in contact with the braid 103 rotates from the rear toward the tip of the shield wire W, thereby loosening the braid 103, and then the wheel brush 31 is loosened. The braid 103 is folded back by rotating in the opposite direction. Depending on the pitch and braid diameter of the braid 103, it may be difficult to fold back the braid 103 in a braided state. Further, the braid 103 can be evenly folded back over the circumferential direction of the shield wire W by the wheel brush 31 revolving while rotating.

FIG. 17 is a perspective view showing a main part of a braid cutting device 4A of another embodiment. Hereinafter, the braid cutting device 4A has the same configuration as the braid cutting device 4 of the embodiment described above, except for the parts described below, and performs the same operation. The braid cutting device 4A is obtained by changing the mechanism for varying the force for pressing the braid cutting blade 48 against the sleeve 105 to a spring mechanism. The braid cutting device 4A does not include the slide portions 58 and 61, and each blade holding portion 49, each link bar 50, and each plate 57 is attached via a slide base 71, a spring holding portion 72, a spring 73, and a shaft 74. Connecting.

The slide base 71 has a rail 71a and plates 71b and 71c that are slidable with respect to the rail 71a. One surface of the rail 71a is fixed to one surface of the plate 57, and plates 71b and 71c are slidably attached to the other surface of the rail 71a. A substantially rectangular parallelepiped spring holding portion 72 is provided on the rail 71a via a plate 71b. The spring holding portion 72 is rotatably attached to the link bar 50 at the rear. Further, the blade holding portion 49 is attached to the rail 71a via a plate 71c. A shaft 74 containing a spring 73 is provided between the plates 71b and 71c to connect the plates 71b and 71c so as to be able to approach and separate from each other. In this way, a spring mechanism is realized that makes the force for pressing the braid cutting blade 48 against the sleeve 105 variable.

Further, the revolving brush 62 is attached to the blade attachment portion 49 a of the blade holding portion 49 instead of the slide portion 61 . The revolving brush 62 is arranged along a plane perpendicular to the plane to which the braid cutting blade 48 is attached in the blade attachment portion 49a. Therefore, the revolving brush 62 revolves to move the braid 103 on the sleeve 105 behind the braid cutting blade 48 .

The braid cutting device 4A shown in FIG. 14 also has the same effect as the braid cutting device 4, and when the elliptical longitudinal and lateral difference of the sleeve 105 is large, the cut depth by the braid cutting blade 48 is variable, and the elliptical longitudinal and transverse difference of the sleeve 105 It can overcome the difference in cutting depth due to

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, numerical value, form, number, location, etc. of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved. For example, in the above-described embodiment, the processing target of the braid processing apparatus 1 is the shielded wire W in which the two wires 101 are not twisted (arranged straight), but the two communication wires are twisted together. It may be a twisted wire. The number of wires is not limited to two, and may be four, for example. Alternatively, a shielded wire having a metal foil between the wire 101 and the braid 103 and covering the wire 101 with the metal foil may be processed. A braided coaxial wire or the like can also be processed. The number of braid cutting blades 48 and revolving brushes 62 is preferably 3, but may be 1, 2, 4, or the like. Alternatively, a general wire feeding device may be used instead of the wire setting device 2 by providing a wire gripping portion at the wire insertion position of the brush hogging device 3 .

In the above-described embodiment, an example in which the braid cutting blade 48 is a circular rotary blade is shown, but the braid cutting blade 48 is not limited to a circular rotary blade as long as it can come into contact with the braid and cut the braid. . For example, a V-blade or the like may be used as the braid cutting blade 48, and the V-blade or the like arranged around the shield wire W may be rotated (revolved) around the extending direction of the shield wire W as an axis. Alternatively, a braid cutting blade 48 such as a circular blade or a V blade may be fixedly arranged around the shielded wire W, and the shielded wire W itself may be rotated around the extending direction of the shielded wire W as an axis.

Here, the features of the braid cutting device and the braid cutting method according to the embodiments of the present invention described above are briefly summarized in [1] to [12] below.
[1] A shielded electric wire (W) having a wire (101), a braid (103) covering the wire, and a sheath (104) covering the braid, wherein the sheath is partly peeled off at the tip. a wire gripping part (2A) for gripping the shielded wire with the braid exposed;
A rotating brush (wheel brush 31) that comes into contact with the exposed braid and rotates backward from the tip of the shielded wire about the orthogonal direction orthogonal to the extending direction of the shielded wire to turn back the braid. When,
a cutting blade (braid cutting blade 48) for cutting the braid folded back on the sheath by the rotating brush;
A braid cutting device (braid processing device 1).
[2] The shielded wire is provided with an annular terminal (sleeve 105) on the outer periphery of the sheath at the tip portion,
The braid cutting device according to the above [1], wherein the cutting blade cuts the braid folded back on the annular terminal.
[3] A block (46) sandwiching at least the end of the folded braid between the sheath and the sheath;
The braid cutting device according to the above [1] or [2], wherein the cutting blade cuts the braid sandwiched between the blocks.
[4] The rotating brush comes into contact with the exposed braid, rotates from the rear toward the tip of the shielded wire, and then rotates from the tip toward the rear to fold back the braid. The braid cutting device according to any one of [1] to [3].
[5] The braid cutting device according to any one of [1] to [4], wherein the rotating brush further rotates about the extending direction of the shaft.
[6] The braid cutting device according to the above [2], wherein the cutting blade is a circular rotary blade that rotates around a direction along the extension direction, and cuts the braid by sandwiching it between itself and the annular terminal. .
[7] The braid cutting device according to [6], wherein three cutting blades are provided around the shielded wire, and the shaft rotates around the shielded wire.
[8] The braid cutting device according to [7] above, which includes a mechanism (blade holding portion 49, plate 57, slide portion 58) for varying the force with which the cutting blade is pressed against the sleeve.
[9] A revolving brush (62) that contacts the braid folded back on the annular terminal and rotates about the extension direction,
The braid cutting device according to any one of [2] to [8] above, wherein the cutting blade cuts the folded braid moved by the revolving brush.
[10] A flat plate (end plate 2B1) has a guide hole (recess 2B1c) through which the shielded wire can be inserted, and the shielded wire is positioned on the tip end side of the gripping position of the wire gripping portion. A wire guide (2B) that guides the shielded wire and has a variable distance from the wire grip part,
Any one of the above [1] to [9], wherein the flat plate comes into contact with and is pushed by a part (stopper 39) of the processing device (brush hogging device 3, braid cutting device 4) to approach the wire gripping portion. The braid cutting device according to .
[11] The braid cutting according to the above [10], wherein the electric wire guide is provided around the guide hole on one surface of the flat plate and has a cylindrical braid protection portion (2B5) divided into two in the circumferential direction. Device.
[12] A shielded wire (W) comprising a wire (101), a braid (103) covering the wire, and a sheath (104) covering the braid, wherein the sheath is partly peeled off at the tip. gripping the shielded wire with the braid exposed;
A rotating brush (wheel brush 31) is brought into contact with the exposed braid, and rotated backward from the tip of the shielded wire about an orthogonal direction orthogonal to the extending direction of the shielded wire, thereby removing the braid. folded over said sheath;
A braid cutting method in which the braid folded back on the sheath is cut with a cutting blade (braid cutting blade 48).

1 braid processing device 2 wire setting devices 2A, 44 wire gripping portion 2B wire guide 2B1 tip plate 2B5 braid protection portion 3 brush hogging devices 4, 4A braid cutting device 8 conveying device 31 wheel brush 39 stopper 46 block 48 braid cutting blade 49 blade holding Part 62 Revolving brush 101 Wire rod 102 Foil 103 Braid 104 Sheath 105 Sleeve W Shield wire

Claims (10)

A shielded wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly stripped off at a tip portion to expose the braid. Department and
a rotating brush that is in contact with the exposed braid and rotates rearward from the tip of the shielded wire about an orthogonal direction orthogonal to the extending direction of the shielded wire to turn back the braid;
a cutting blade for cutting the braid folded back on the sheath by the rotating brush;
with
a block sandwiching at least the end of the folded braid between the sheath and the sheath;
with
The braid cutting device, wherein the cutting blade cuts the braid sandwiched between the blocks. The shielded wire is provided with a ring terminal on the outer periphery of the sheath at the tip portion,
The braid cutting device according to claim 1, wherein the cutting blade cuts the braid folded back on the annular terminal. 2. The rotating brush is in contact with the exposed braid, rotates from the rear toward the tip of the shielded wire, and then rotates from the tip toward the rear to fold back the braid. 3. The braid cutting device according to 2. A shielded wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly stripped off at a tip portion to expose the braid. Department and
a rotating brush that is in contact with the exposed braid and rotates rearward from the tip of the shielded wire about an orthogonal direction orthogonal to the extending direction of the shielded wire to turn back the braid;
a cutting blade for cutting the braid folded back on the sheath by the rotating brush;
with
The shielded wire is provided with a ring terminal on the outer periphery of the sheath at the tip portion,
The cutting blade cuts the braid folded back on the annular terminal,
The braid cutting device, wherein the cutting blade is a circular rotary blade that rotates about a direction along the extension direction, and cuts the braid by sandwiching the braid with the annular terminal. The braid cutting device according to claim 4 , wherein the three cutting blades are provided around the shielded wire, and the axis extending along the extending direction rotates around the shielded wire. The braid cutting device according to claim 5 , further comprising a mechanism for varying a force for pressing the cutting blade against the annular terminal. A shielded wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly stripped off at a tip portion to expose the braid. Department and
a rotating brush that is in contact with the exposed braid and rotates rearward from the tip of the shielded wire about an orthogonal direction orthogonal to the extending direction of the shielded wire to turn back the braid;
a cutting blade for cutting the braid folded back on the sheath by the rotating brush;
with
The shielded wire is provided with a ring terminal on the outer periphery of the sheath at the tip portion,
The cutting blade cuts the braid folded back on the annular terminal,
a revolving brush contacting the braid folded back on the annular terminal and rotating about the extending direction;
The braid cutting device, wherein the cutting blade cuts the folded braid moved by the revolving brush. A shielded wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly stripped off at a tip portion to expose the braid. Department and
a rotating brush that is in contact with the exposed braid and rotates rearward from the tip of the shielded wire about an orthogonal direction orthogonal to the extending direction of the shielded wire to turn back the braid;
a cutting blade for cutting the braid folded back on the sheath by the rotating brush;
A guide hole through which the shielded wire can be inserted is provided in a part of the flat plate, and the shielded wire is guided on the front end side of the position where the shielded wire is gripped by the wire gripping portion. a wire guide with a variable distance between;
with
The braid cutting device, wherein the flat plate approaches the wire gripping portion by being pressed against a part of the processing device. 9. The braid cutting device according to claim 8 , wherein the wire guide has a cylindrical braid protection portion that is provided around the guide hole on one surface of the flat plate and divided into two in the circumferential direction. A shielded electric wire having a wire rod, a braid covering the wire rod, and a sheath covering the braid, wherein the sheath is partly stripped at a tip portion to expose the braid, and the shielded electric wire is gripped,
A rotating brush is brought into contact with the exposed braid, and rotated backward from the tip of the shielded wire about an orthogonal direction perpendicular to the extending direction of the shielded wire, thereby folding back the braid onto the sheath. ,
At least the end of the folded braid is sandwiched between the sheath and the block,
A braid cutting method, wherein the braid folded back over the sheath and sandwiched between the blocks is cut with a cutting blade.

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