JP3010618U - Wire stripper - Google Patents

Abstract

(57) [Summary] [Purpose] To enable the removal of the peeled outer skin in a good working environment. A wire stripper is for peeling off a sheath of a covered electric wire, and for cutting a chuck part 21 for gripping the wire and an outer skin of the wire gripped by the chuck part 21. A blade portion 22 having a pair of blades 46, 47, a chuck portion 21 and a pair of blades 46,
Air cylinders 50, 51 and main cylinder 2 for separating 47 from each other to separate the outer skin from the electric wire.
3, a receiving table 54 for receiving the outer skin to be peeled off, and a support block step 57 for rotatably supporting the receiving table 54 around a horizontal axis, and the receiving table 54 is rotated by the rack cylinder 62 for peeling Remove the crusted body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wire stripper for peeling an outer skin of a covered wire material such as an electric wire in which the outer periphery of a core wire is covered.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, when peeling an outer cover of a covered wire material such as an electric wire (hereinafter, an electric wire will be described as an example), as disclosed in Japanese Utility Model Laid-Open No. 3-117322, a semi-automatic method using air pressure is used. A wire stripper that peels off the outer skin is used. The wire stripper disclosed in the above publication has a base table, a chuck portion fixed on the base table for chucking an electric wire, and a tool table having a tool for peeling the outer skin of the wire attached. It has a main cylinder for moving the turret, a pedestal for receiving the outer body peeled off from the electric wire, and an air ejection nozzle for ejecting air so that the outer body on the pedestal is blown in the discharge direction. There is. The tool rest is arranged on the base so as to be movable in the axial direction of the chucked wire.

In such a wire stripper, when the outer skin body at the tip of the electric wire is peeled off, the electric wire is positioned and the electric wire is chucked by the chuck portion on the base. Then, after cutting the outer body with the tool on the tool rest, the main cylinder is activated to move the tool rest in the axial direction of the electric wire. As a result, the outer skin at the tip of the wire is peeled off. The peeled outer body is received by the pedestal and then blown off in the discharge direction by the air ejection nozzle.

[0004]

[Problems to be solved by the device]

 In the conventional device as described above, the outer skin peeled off from the electric wire is blown off by the air jet nozzle after being received on the receiving base, so that the outer skin accumulates on the receiving base even if the peeling work is repeated. Never. However, since the outer body is blown off by the air, there is a problem in that noise is generated due to the jetting of air and the working environment deteriorates.

An object of the present invention is to enable removal of the peeled outer skin in a good working environment. Another object of the present invention is to enable removal of the peeled outer skin with a simple device.

[0006]

[Means for Solving the Problems]

 A wire stripper according to claim 1 is for peeling off an outer skin of a covered wire, and cuts a chuck member for holding the wire and an outer skin of the wire held by the chuck member. A pair of blades for peeling, a peeling driving means, an outer skin receiving means, and a cradle driving means. The peeling driving means is for peeling the outer skin from the wire by moving the chuck member and the pair of blades toward and away from each other. The outer skin body receiving means has a pedestal for receiving the outer skin body to be peeled off, and pedestal supporting means for rotatably supporting the pedestal around a horizontal axis. The cradle driving means rotates the cradle.

A wire stripper according to a second aspect is the wire stripper according to the first aspect, wherein the peeling driving means has a first air actuator that moves the blade along the axial direction of the wire rod, and a pedestal drive. The means has a second air actuator for rotating the pedestal, and further comprises air driving means for operating the second air actuator by the exhaust generated when the first air actuator returns after the peeling operation.

A wire stripper according to a third aspect is the wire stripper according to the second aspect, wherein the pedestal has a rotation shaft supported by the pedestal support means, and the pedestal drive means is attached to the rotation shaft. The second air actuator has a pinion and a rack that meshes with the pinion, and moves the rack back and forth. A wire stripper according to a fourth aspect is the wire stripper according to any one of the first to third aspects, in which the cradle support means supports the cradle in an adjustable manner.

[0009]

[Action]

 In the wire stripper according to claim 1, the wire member is gripped by the chuck member, and the outer skin of the wire member gripped by the chuck member is cut by the pair of blades. Then, either one of the chuck member and the blade is moved to be separated from each other, whereby the cut outer skin is peeled off. The outer skin separated from the wire rod falls on a pedestal provided below the blade, for example. Then, the outer cover that has dropped onto the pedestal falls further downward when the pedestal is rotated around the horizontal axis. Here, even if the work of peeling the outer skin of the wire is repeated, the outer skin can be removed in a good working environment without generating noise.

In the wire stripper according to the second aspect, the first air actuator is moved after the blade is moved along the axial direction of the wire rod by the first air actuator. At this time, the second air actuator operates due to the exhaust gas generated when the first air actuator returns to rotate the pedestal. Here, since the second air actuator can be operated by the exhaust of the first air actuator to rotate the pedestal, the control procedure is simplified.

In the wire stripper of the third aspect, the rack is moved back and forth by the second air actuator to rotate the pinion and rotate the pedestal. Here, the pedestal can be rotated with a simple structure of a rack and a pinion. In the wire stripper of the fourth aspect, the vertical position of the pedestal is adjusted according to the type of wire rod. Here, the outer skin can be reliably received on the pedestal according to the type of wire.

[0012]

【Example】

 1 to 4 are views showing a wire stripper according to an embodiment of the present invention. 1 is a perspective view of the wire stripper, FIG. 2 is a plan view of the wire stripper, FIG. 3 is a sectional front view thereof, and FIG. 4 is a cross-sectional side view seen from the front side. The wire stripper mainly includes a base 20, a chuck portion 21, a blade portion 22, and a main cylinder 23 (FIG. 3) for moving the blade portion 22.

As shown in FIG. 2, a first solenoid valve 24, a second solenoid valve 25, and a distribution valve 26 are fixed to the side of the base 20. An air compressor 61 (FIG. 6) is connected to the inlet port of the distribution valve 26, and solenoid valves 24 and 25 are connected to the outlet port. The first solenoid valve 24 is for sliding a blade of a blade portion 22 1 described later in the left-right direction, and the second solenoid valve 25 operates the main air cylinder 23 to move the blade portion 22 in the front-back direction. It is for moving. Further, as is clear from FIGS. 3 and 4, a pair of guide rails 28a and 28b extending in the front-rear direction are fixed on the base plate 20a above the base 20.

The chuck portion 21 has a chuck base plate 30 fixed to the rear ends of the guide rails 28 a and 28 b via a support block 29. A pair of chuck members 31 and 32 are arranged on the chuck base plate 30 so as to face each other. These chuck members 31 and 32 are mounted on the chuck base plate 30 by shafts 33 and 34 so as to be rotatable in a horizontal plane. The chuck members 31 and 32 have sandwiching surfaces 31a and 32a facing each other. The sandwiching surfaces 31a and 32a are arc surfaces that spread outward from the front to the rear. The center of the arc is eccentric with the centers of the shafts 33 and 34. Thereby, when the chuck members 31 and 32 are rotated so as to approach each other, the distance between the holding surfaces 31a and 32a is narrowed. Further, each of the holding surfaces 31a, 32a is formed in a sawtooth shape so as to prevent slippage when the electric wire is held.

As enlarged in FIG. 5 and apparent from FIG. 3, the lower surface of each chuck member 31 and 32 is protruded downward from the center of rotation toward the center and the rods 35 and 32. 36 is fixed. Two notched grooves 30a and 30b are formed in the chuck base plate 30, and the rods 35 and 36 extend through the notched grooves 30a and 30b, respectively, to below the chuck base plate 30. . On the other hand, locking pins 37 and 38 are provided on the lower surface of the chuck base plate 30 so as to project downward. The shafts 33 and 34 of the chuck members 31 and 32 are provided with torsion springs 39 and 40, one end of which is locked to the rods 35 and 36 and the other end of which is locked to the locking pins 37 and 38. . In this way, the chuck members 31 and 32 are always biased in the rotation direction (C direction in FIG. 5) for gripping the electric wire.

The blade part 22 has a slide member 41 slidably provided on the left and right guide rails 28a and 28b. The slide member 41 has a guide protrusion 41a that engages with the guide grooves of the guide rails 28a and 28b. A tool rest 42 is fixed to the upper end of the slide member 41. The tool rest 42 is bilaterally symmetric, and a recess 42a for mounting the guide pipe 43 is provided in the center thereof. Further, slider guide portions 42b (see FIG. 3) having guide grooves are formed on both left and right sides of the tool rest 42. Blade sliders 44 and 45 are attached to the left and right slider guide portions 42b so as to be slidable in the left and right directions. The blade sliders 44 and 45 are formed in an H-shaped cross section as shown in FIG. 3, and blades 46 and 47 for cutting the outer skin of the electric wire are fixed to the front end faces thereof by blade pressers 48 and 49. ing. As shown in FIG. 4, each of the blades 46, 47 has a semi-circular cutter portion 46 a, 47 a corresponding to the diameter of the electric wire formed in the center thereof.

Further, air cylinders 50 and 51 which are operated by the first solenoid valve 24 are fixed to the left and right ends of the tool rest 42, respectively. The rods of the air cylinders 50 and 51 are fixed to the blade sliders 44 and 45, respectively. A push plate 52 (see FIGS. 3 and 5) is provided on the upper surface of the slide member 41 and behind the tool rest 42. As shown in FIG. 5, the rear end of the push plate 52 contacts the rods 35 and 36 at a position where the tool rest 42 approaches the chuck portion 21, and spreads the chuck members 31 and 32 outward. It is rotated to.

Further, the guide pipe 43 arranged in the central portion of the tool rest 42 is formed in a cylindrical shape, and a hole 43a corresponding to the diameter of the electric wire is formed in the central portion thereof. Further, it has a rectangular flange 43b at its front end, and as shown in FIGS. 1 and 5, this flange 43b is a vertical cutout formed in the center of the rear end face of the tool rest 42. It can be inserted into the grooves 42c and 42d.

On the upper surface of the slide member 41 and in front of the tool rest 42, a receiving base 54 for receiving the peeled outer skin is provided. As shown in FIGS. 3 and 6, a front end of the cradle 54 is provided with a rotating shaft 54a extending forward. A positioning block 55 is slidably arranged in the middle of the cradle 54. The position of the positioning block 55 is fixed by a fixing screw 56. On one surface of the positioning block 55, an abutting surface with which the tip of the electric wire can abut is formed. Below the cradle 54, a cover 53 having a size capable of covering the lower guide rails 28a and 28b in the state in which the tool rest 42 is located at the rearmost position is fixed. The front side of the cover 53 is inclined downward.

A support block 57 is provided at the front end of the cover 53 to rotatably support the pedestal 54 via a rotary shaft 54a. The support block 57 is fixed to an L-shaped bracket 58 fixed on the front end of the cover 53 so as to be vertically movable. As shown in FIG. 6, the L-shaped bracket 58 is formed with a vertically elongated long hole 58a, and a fixing screw 58b fastened to the support block 57 is arranged in the long hole 58a. The vertical position of the support block 57 can be fixed by the fixing screw 58b. A pinion gear 59 is attached to the tip of the rotary shaft 54a. On the other hand, a rack cylinder 62 is attached to the support block 57 as shown in FIG. A rack 63 is attached to the rod 62a of the rack cylinder 62. The rack 63 meshes with the pinion gear 59. Here, the rod 62a of the rack cylinder 62 expands and contracts, whereby the rack 63 advances and retracts, the pinion gear 59 rotates, and the pedestal 54 rotates.

The main cylinder 23 is fixed inside the base 20, and an arm 60 is fixed to the tip of the rod 23a. The upper end of the arm 60 is fixed to the slide member 41, and the tool rest 42 slides in the front-rear direction along the guide rails 28a and 28b as the rod 23a of the main cylinder 23 expands and contracts.

Next, the pneumatic circuit of the present device will be described with reference to FIG. As is clear from FIG. 7, the air compressor 61 is connected to the p port of the first solenoid valve 24 and the p port of the 5-port second solenoid valve 25 via the distribution valve 26. The ports a and b of the first solenoid valve 24 are connected to the chambers 50a, 51b, 51a and 51b of the air cylinders 50 and 51 for moving the blade, and the ports a and b of the second solenoid valve 25 are connected. The ports are connected to the chambers 23b and 23c of the main air cylinder 23. The c port of the second solenoid valve 25 is connected to the head side chamber 62b of the rack cylinder 62. The rack cylinder 62 is a single-acting air cylinder, and a spring 62d is arranged in the rod side chamber 62c in a compressed state. Therefore, in the rack cylinder 62, the rod 62a is normally retracted, and the rack cylinder 62 is advanced when the pressurized air is introduced into the rod chamber 62a. A silencer 27 with a throttle is branched and arranged between the c port of the second solenoid valve 25 and the rack cylinder 62.

Next, the operation of the wire stripper of the above embodiment will be described. When the foot switch (not shown) is off, the first and second solenoid valves 24 1 and 25 2 are switched to the positions shown in FIG. 7, respectively. That is, the blade sliders 44 and 45 connected to the air cylinders 50 and 51 are moved to the most retracted positions. Further, since the rod 23a of the main cylinder 23 is also in the advanced state, the tool rest 42 is located at the rearmost (front side). Further, no pressurized air is supplied to the rack cylinder 62.

FIG. 5 shows such an initial state. In this initial state, since the tool rest 42 is moved to the rearmost side as described above, the rear end of the push plate 52 is attached to the rods 35 and 36 protruding from the chuck members 31 and 32 to the lower surface of the chuck base plate 30. It abuts and presses the rods 35 and 36 rearward. Therefore, the chuck members 31 and 32 rotate outward against the biasing forces of the torsion springs 39 and 40, and the clamping surfaces 31a and 32a are in the most open state.

In such a state, the electric wire 2 is passed through the hole 43 a of the guide pipe 43, and the tip end thereof is brought into contact with the contact portion of the positioning block 55. The position of the positioning block 55 in the front-rear direction is adjusted according to the size of the outer skin 2a of the electric wire 2 to be peeled off. As described above, in this device, since the tip end portion of the electric wire 2 is guided to the contact portion by the guide pipe 43, the work of setting the electric wire 2 can be performed very easily and accurately. In addition, it is safe because the worker can set the electric wire 2 without bringing his / her finger near the chuck portion 21. Further, since the guide pipe 43 can be easily attached to and detached from the tool rest 42, if holes 43a having various inner diameters are prepared, it is possible to easily cope with a change in the diameter of the electric wire 2. be able to.

When the foot switch is turned on after the electric wire 2 is set by the above-described work, the first solenoid valve 24 is activated to communicate the p port and the b port, and the head side chamber 50a of the air cylinders 50, 51. , 51a is supplied with pressurized air from the air compressor 61 via the distribution valve 26. Therefore, the blade sliders 44 and 45 slide to the center side, respectively, and the outer skin 2a of the electric wire 2 is cut by the blades 46 and 47 fixed to the blade sliders 44 and 45.

As described above, in the blade portion 22 of the present apparatus, the electric wire 2 is set in the central portion by the guide pipe 43, and the blades 46 and 47 are moved from the left and right sides of the electric wire 2 to move the outer skin 2a of the electric wire 2. Disconnect. Therefore, the outer skin 2a is cut from the left and right sides of the electric wire 2 with substantially the same force. The outer skin 2a can be cut uniformly. As a result, the core wire in the center of the electric wire 2 is not damaged.

When the blade sliders 44, 45 project and the outer sheath 2 a of the electric wire 2 is cut by the blades 46, 47, the second solenoid valve 25 operates to connect the p port and the a port, and the main cylinder 23 Pressurized air from the air compressor 61 is supplied to the rod side chamber 23c of FIG. Therefore, the rod 23a of the main cylinder 23 retracts, and the tool rest 42 is slid forward through the arm 60 and the slide member 41.

As the slide member 41 slides forward, the push plate 52 on its upper surface moves forward. When the push plate 52 moves forward, the rear ends thereof separate from the rods 35 and 36 of the chuck members 31 and 32. Therefore, the chuck members 31 and 32 rotate in the direction in which the electric wire 2 is sandwiched (direction C in FIG. 5) by the biasing forces of the torsion springs 39 and 40.

Since the tool rest 42 moves forward when the outer cover 2 a of the electric wire 2 is peeled off, the electric wire 2 is further pulled forward while being sandwiched between the chuck members 31 and 32. When the electric wire 2 is pulled forward, this force causes the chuck members 31 and 32 to rotate in the C direction so as to further clamp the electric wire 2. The chuck members 31 and 32 are shaped so that the distance between the holding surfaces 31a and 32a becomes narrower as they rotate in the C direction, so that the electric wire 2 is more firmly gripped by the wedge effect. Becomes

In the present apparatus, even when the worker jams fingers in the work of setting the electric wire 2, the holding force of the chuck members 31, 32 itself is only due to the torsion springs 39, 40. Therefore, the damage is small and the damage is small as compared with the conventional device. Further, when the operator pulls his / her finger toward the front when the finger is clogged, the chuck members 31 and 32 rotate in such a direction as to increase the distance between the holding surfaces 31a and 32a, so that the chuck members immediately. A finger can be pulled out from between the black members 31 and 32.

Further, since the spacing between the sandwiching surfaces 31a, 32a of the chuck members 31, 32 is changed arbitrarily, adjustment work or the like is not necessary even if the diameter of the electric wire 2 is changed. Further, the clamping force can always be firmly clamped by the wedge effect as described above. Further, the mechanism for rotating the chuck members 31, 32 is constituted by the torsion springs 30, 40, which is less expensive than the conventional device using an air cylinder.

When the tool rest 42 moves forward with the electric wire 2 firmly gripped in this way, the outer cover 2a moves forward, and the outer cover 2a at the tip of the electric wire 2 is peeled off. It falls on the cradle 54. When the arm 60 of the main cylinder 23 slides to the front, the side surface of the arm 60 contacts a limit switch (not shown). As a result, both the first solenoid valve 24 and the second solenoid valve 25 stop, and the p port of the first solenoid valve 24 communicates with the a port. Further, in the second solenoid valve 25, the p port communicates with the b port and the a port communicates with the c port. As a result, the air cylinders 50 and 51 retreat and the tool sliders 44 and 45 of the tool rest 42 move outward respectively. Further, the rod 23a of the main cylinder 23 advances and the tool rest 42 slides backward to return to the initial state. At this time, exhaust gas from the rod side chamber 23c is supplied from the second solenoid valve 25 to the rack cylinder 62, and the rack 63 moves forward. When the rack 63 moves forward, the pinion gear 59 rotates and the pedestal 54 rotates. As a result, the outer cover 2a that has fallen onto the cradle 54 further drops onto the cover 53, slides off the cover 2a, and is discharged to the side of the apparatus.

When the main cylinder 23 returns to the initial state, the head side chamber 62b of the rack cylinder 62 is depressurized by the exhaust from the silencer 27, and the rack cylinder 62 is retracted by the spring 62d. As a result, the rack 63 retracts and the cradle 54 returns to its original posture. Here, the outer skin 2a that has dropped onto the pedestal 54 drops further downward as the pedestal 54 rotates about a horizontal axis, so even if the outer skin peeling operation is repeated, noise will be generated. The outer skin 2a can be removed in a good working environment without generating Further, since the cradle 54 can be rotated by operating the rack cylinder 62 by exhausting the main cylinder 23, another control means such as a solenoid valve for rotation is not required, and the control procedure is simplified. Further, the pedestal 54 can be rotated with a simple structure of the rack 63 and the pinion gear 59. Furthermore, since the vertical position of the receiving base 54 can be adjusted according to the type of wire, the outer cover 2a can be reliably received. [Other Embodiments] (a) In the above embodiment, the chuck portion 21 is fixed to the base 20, and the blade portion 22 is slidable in the front-back direction. Alternatively, the chuck portion 21 may be slidable in the front-back direction. (b) In the above embodiment, the cradle 54 is rotated by the rack 63 and the pinion gear 59, but the cradle 54 is rotated by another rotating means such as direct rotation by a motor. May be.

[0035]

[Effect of device]

 As described above, in the wire stripper according to the first aspect, the outer skin that has fallen onto the pedestal falls further downward when the pedestal rotates about the horizontal axis. Even if the work is repeated, the outer skin can be removed in a good working environment without generating noise.

In the wire stripper according to the second aspect, since the rotation of the pedestal can be performed by operating the second air actuator by exhausting the first air actuator, the control procedure is simplified. In the wire stripper according to the third aspect, the pedestal can be rotated with a simple structure of the rack and the pinion.

In the wire stripper according to the fourth aspect, the vertical position of the pedestal can be adjusted depending on the type of the wire rod, so that the outer skin can be reliably received.

[Brief description of drawings]

FIG. 1 is a plan view of a wire stripper according to an embodiment of the present invention.

FIG. 2 is a sectional front view thereof.

FIG. 3 is a sectional side view thereof.

FIG. 4 is an overall perspective view of a wire stripper.

FIG. 5 is a partial plan view for explaining the operation of the wire stripper.

FIG. 6 is a partial side view of the vicinity of a support block.

FIG. 7 is a pneumatic circuit diagram of the wire stripper.

[Explanation of symbols]

 2 wire 2a outer body 21 chuck part 22 knife part 23 main air cylinder 27 third solenoid valve 31, 32 chuck member 42 turret 46, 47 knives 53 cover 54 cradle 54a rotating shaft 57 support block 58 L-shaped bracket 59 pinion gear 62 rack cylinder

Claims (4)

[Scope of utility model registration request] 1. A wire stripper for peeling an outer skin of a covered wire rod, comprising: a chuck member for holding the wire rod, and 1 for cutting the outer skin body of the wire rod held by the chuck member. A pair of blades, a peeling drive means for peeling the outer skin from the wire by causing the chuck member and the pair of blades to approach and separate from each other, a pedestal for receiving the outer skin to be peeled, and the receiver A wire stripper comprising: an outer cover receiving means having a pedestal supporting means for rotatably supporting the pedestal about a horizontal axis; and a pedestal driving means for rotating the pedestal. 2. The peeling drive means includes a first air actuator for moving the blade along the axial direction of the wire rod, and the cradle drive means for rotating the cradle. 2. The wire stripper according to claim 1, further comprising: an air driving unit that operates the second air actuator by exhaust generated when the first air actuator is returned after the peeling operation. 3. The pedestal has a rotation shaft supported by the pedestal support means, and the pedestal drive means has a pinion attached to the rotation shaft and a rack meshing with the pinion. The wire stripper according to claim 2, wherein the second air actuator moves the rack back and forth. 4. The wire stripper according to claim 1, wherein the pedestal support means supports the pedestal so as to be adjustable in vertical position.