JP3707594B2 - Wire stripping device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wire stripping device for stripping an insulation coating at a longitudinal intermediate portion or a terminal portion of an electric wire.
[0002]
[Prior art]
FIG. 9 shows a conventional wire stripping device described in Japanese Utility Model Laid-Open No. 1-180115.
The wire stripping device 55 includes a pair of upper and lower substantially hexagonal stripping cutters 56 and 57, shaft portions 58 and 59 for rotatably supporting the stripping cutters 56 and 57, and shaft portions 58 and 59. Are fixed to each other, the slide bases 60 and 61 holding the stripping cutters 56 and 57 movably in the longitudinal direction of the electric wire, the lever 62 for moving the slide bases 60 and 61, and the upper slide base 60 on the upper side. A cover 64 that can be freely opened and closed by a hinge 63 integrally with the peeler cutter 56 and a pair of upper and lower clamps (not shown) that hold the electric wire 65 are provided.
[0003]
Each of the skinning cutters 56 and 57 is formed in a thin plate shape and has semicircular blade portions 56a and 57a having different sizes on each side of the hexagon, and the skinning cutters 56 and 57 are stripped around the shaft portions 58 and 59. By rotating the cutters 56 and 57, the blade portions 56a and 57a corresponding to the electric wires 65 can be appropriately selected. The upper peeling cutter 56 opens and closes in the electric wire radial direction. The clamp is disposed on the side opposite to the moving direction of the slide bases 60 and 61.
[0004]
With the cover 64 opened, the electric wire 65 is set on the blade portion 57a of the skin peeling cutter 57 from the lever 62 side to the lower side. The insertion opening of the electric wire 65 and the center of the peeling cutters 56 and 57 are considerably separated. The electric wire 65 is fixed with a clamp. Next, by closing the cover 64, the electric wire 65 is sandwiched between the blade portions 56a, 57a of the upper and lower skinning cutters 56, 57, and the insulating coating of the electric wire 65 is cut. The blade portions 56a and 57a are in a state of being cut into the insulating coating. By tilting the lever 62 in this state, the slide bases 60 and 61 are moved together with the skinning cutters 56 and 57, and the insulation coating at the middle portion in the longitudinal direction of the electric wire 65 is moved in the moving direction. The conductor is exposed.
[0005]
However, in the conventional wire stripping device 55 and the wire stripping method using the same, when the wire 65 is inserted into the wire stripping device 55 from the lateral direction, the stripping cutters 56 and 57 from the insertion opening. Since the distance L to the blade portions 56a and 57a is long, there is a problem that it is difficult to set the electric wire 65 and the workability is poor. In addition, since a plurality of types of blade portions 56a and 57a for various types and sizes of the electric wires 65 are formed for each one of the skinning cutters 56 and 57, the blade portions 56a and 57a at one location are consumed. Even in this case, one piece of the peeler cutters 56 and 57 must be completely replaced, which is wasteful and the processing accuracy of the blade portions 56a and 57a is severe, resulting in high costs. . Further, the replacement of the skinning cutters 56 and 57 requires a troublesome work of loosening and removing the pins 58 and 59 in a screw manner and removing the skinning cutters 56 and 57 from the slide bases 60 and 61. There was a problem that it took.
[0006]
On the other hand, FIG. 10 shows a stripping portion in a conventional wire stripping apparatus described in Japanese Patent Laid-Open No. 4-19029.
The skinning section 70 includes a central electric wire cutter 71, a pair of skinning cutters 72 disposed on both sides thereof, a tool block 73 for fixing the electric wire cutter 71 and the skinning cutter 72, and each tool block 73. It is comprised with a pair of holder 74 which hold | maintains. The electric wire cutter 71 protrudes slightly from the skinned cutter 72. The tool block 73 is fixed to the holder 74 with a bolt 75.
[0007]
As shown in FIG. 11, the electric wires 76 are set between a pair of left and right holders 74 and supported by a pair of left and right skinning cutters 72, and the electric wires 76 are cut in the radial direction by a pair of electric wire cutters 71 at the center. The insulating coating is cut by each pair of peeling cutters 72. In this state, the electric wires 76 are pulled to both sides in the longitudinal direction, and the insulation coatings of both end portions are peeled off at the same time in the middle portion of the electric wires 76.
[0008]
However, in this stripping portion 70 and the method of stripping the electric wire using the same, the tool block 73 must be fastened and fixed to the holder 74 in FIG. There was a problem that was extremely troublesome.
[0009]
[Problems to be solved by the invention]
In view of the problems of the conventional examples described above, the present invention allows an electric wire to be easily set in an electric wire peeling apparatus, and can also easily and economically replace the peeling cutter when the blade portion is worn. To provide a wire stripping device that can easily attach and detach a stripping processing unit including a stripping cutter to the device main body, and generally speaking, a wire stripping device that can easily and efficiently perform a stripping operation of a wire. Objective.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a plurality of pairs of rotatable shaft portions and a pair of shafts that are disposed so as to face each other in the axial direction around the shaft portions, and one holder can move toward the other holder . and the holder, and peeling cutter and wire guide plate which is mounted on the holder, driving means for moving one of the holder said toward the other holder, and means for pulling in the longitudinal direction while gripping the wire The wire stripping device is characterized in that the stripping cutter and the wire guide plate are arranged side by side in the tangential direction of the shaft portion outside the shaft portion (Claim 1).
It is also effective that the one holder is slidably engaged with a guide portion around the shaft portion, and temporary holding means is provided on the one holder and the guide portion (claim 2). It is also effective that the temporary holding means is an engagement hole and an elastic engagement portion with respect to the engagement hole. It is also effective that the one holder includes a shank portion having a pair of opposing claw portions , and the shank portion is connected to the driving means.
It is also effective that the plurality of pairs of holders are arranged radially around the shaft portion (claim 5). It is also effective that a plurality of hole portions are provided in the radial direction of the shaft portion corresponding to the plurality of pairs of holders, and an elastic engaging portion for positioning is disposed in the hole portion ( Claim 6). It is also effective that a plurality of hole portions are provided in the radial direction of the shaft portion corresponding to the plurality of pairs of holders, and a shaft fixing rod capable of moving forward and backward with respect to the hole portion is provided. (Claim 7).
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Specific examples of embodiments of the present invention will be described below in detail with reference to the drawings.
FIGS. 1-3 shows one Embodiment of the principal part of the wire stripping apparatus which concerns on this invention.
[0012]
As shown in FIGS. 1 and 2, a pair of upper and lower skinning cutters 1 and 2 and a pair of wire guide plates 3 and 4 on both sides thereof are fixed to upper and lower holders 5 and 6, respectively. The skinning cutters 1 and 2 are formed in a rectangular plate shape, and have blade portions 1a and 2a cut out in a substantially V shape at the center of the tip. The wire guide plates 3 and 4 are formed in a rectangular plate shape longer than the stripping cutters 1 and 2, and have a pair of wire support portions 3 a and 4 a that are curved in a rounded shape on the tip side. It protrudes slightly in the electric wire radial direction. With the upper and lower holders 5 and 6 approaching, the peeled cutters 1 and 2 are joined at their tips, and the wire guide plates 3 and 4 are wrapped in the longitudinal direction of the wire.
[0013]
The upper holder 5 includes a holding portion 8 that is fixed with a small screw 7 and a bolt 48 (FIG. 7) in a state where the peeling cutter 1 and the wire guide plate 3 are slightly separated. The lower holder 6 includes a similar holding portion 9 and a shank portion 10 that is continuous with the holding portion 9 on the proximal end side of the wire guide plate 4. The shank part 10 has a pair of claw parts 11 and can be easily connected to a driving part described later. The side wall 12 of the upper holder 5 is provided with a bolt insertion hole 14 for fixing to the apparatus main body 13.
[0014]
At least one side wall 15 (in this example, both side walls) of the lower holder 6 is provided with a countersunk-like (tapered) engagement hole 16 serving as a temporary holding means for the apparatus main body 13. By providing the engagement holes 16 in the both side walls 15, the holder 6 is symmetrical in the front-rear and left-right directions, so that it is not necessary to determine the direction of insertion, and the assembly work to the apparatus main body 13 is easy.
[0015]
The upper holder 5 is fixed to the upper side of the vertical shaft portion 17 of the apparatus main body 13. An upper assembly portion 18 (FIG. 1) is formed around the upper portion of the shaft portion 17, and the assembly portion 18 has six groove portions 19 for fixing the upper holders 5 at equal intervals on the circumference. ing. The groove part 19 is notched in the longitudinal direction of the shaft part 17, has a notch opening 22 on the lower side, a partition wall 20 is formed on both sides of the groove part 19, and a stop wall 21 is formed on the upper side thereof. In each groove portion 19, each holder 5 equipped with a different kind (size) of the peeling cutter 1 and the wire guide plate 3 is inserted from the lower side and fixed by bolting on the upper side. The skinning cutter 1 and the wire guide plate 3 are arranged in parallel in the tangential direction of the shaft portion 17.
[0016]
A guide wall 23 for sliding with respect to the lower holder 6 is formed radially in the middle portion in the longitudinal direction of the shaft portion 17, and six rectangular guide grooves 24 penetrating vertically are provided between the guide walls 23. The screw holes 26 for fixing to the guide block 25 (FIG. 2) are provided in two rows on the front side of each guide wall 23.
[0017]
The guide block 25 (FIG. 2) is formed in a substantially U-shape, and has a rectangular guide groove 29 inside the front wall 27 and the side walls 28 on both sides, and penetrates the side wall 28 from the front wall 27. Bolt insertion holes are provided, and in the center of the front wall 27, a ball plunger (an elastic engagement portion which is a temporary holding means) 30 for the engagement hole 16 of the lower holder 6 is provided. The ball plunger 30 is commercially available and has a ball elastically biased by a coil spring. The ball protrudes into the guide groove 29 and can be engaged with the engagement hole 16 of the holder 6.
[0018]
In the state where the guide block 25 is fixed to the guide wall 23 with the bolt 31, both guide grooves 24 and 29 are combined to form a rectangular guide hole 32 penetrating vertically. A guide portion 33 is constituted by the guide block 25 and the guide wall 23.
[0019]
By inserting the holder 6 into the guide hole 32, the holder 6 is temporarily held and positioned by the temporary holding means 16 and 30 as shown in FIGS. The holder 6 can be easily pulled out and pushed out from the guide portion 33 by the temporary holding means 16 and 30, and the attachment / detachment / exchange operation of the holder 6 is facilitated.
[0020]
It is also possible to provide the ball plunger 30 in the holder 6 and provide the engagement hole 16 in the guide block 25. Further, the upper holder 5 (FIG. 1) can be temporarily held by a similar ball plunger and an engagement hole. In this case, the bolting operation at the time of permanent fixing is facilitated.
[0021]
Respective holders 6 having different types (sizes) of the stripping cutter 2 and the wire guide plate 4 are inserted into the guide holes 32 from below. The same applies to the upper assembly 18. The strip width cutter 2 and the wire guide plate 4 have respective plate width directions that are directed radially outward from the center side of the shaft portion 17, and each plate thickness direction coincides with the tangential direction of the shaft portion 17. That is, on the outer peripheral side of the shaft portion 17, a straight line connecting the blade portion 2 a of the peeling cutter 2 and the wire support portion 4 a of the wire guide plate 4 is positioned in parallel with the tangent line of the shaft portion 17. The leading end of the guide block 25 and the skinning cutter 2 and the leading end of the wire guide plate 4 are located in an exposed state, and a conventional cover or the like is not disposed outside.
[0022]
As shown in FIGS. 1 and 5, the electric wire 35 is set on the blade portion 2 a of the peeling cutter 2 and the electric wire support portion 4 a of the electric wire guide plate 4 from the outer peripheral side of the shaft portion 17. The longitudinal direction of the electric wire 35 coincides with the tangential direction of the shaft portion 17, and the radial direction of the electric wire 35 coincides with the radial direction of the shaft portion 17. The supply distance L ₁ for setting the electric wire 35 on the peeling cutter 2 from the outside is extremely shorter than the supply distance L of the conventional example (FIG. 9).
[0023]
In the lower part of the shaft portion 17, radial hole portions 36 are provided in a circumferentially equidistant manner corresponding to the respective holders 6, and a stopper cylinder (shaft portion fixing means) 37 is provided to the hole portion 36. A horizontal rod 38 is arranged to be engageable. The shaft portion 17 is rotatably supported by upper and lower bearings 39. When the stopper cylinder 37 is extended, the rod 38 enters the hole portion 36 of the shaft portion 17 with almost no gap, and positions and fixes the shaft portion 17 so as not to rotate. In the compressed state of the stopper cylinder 37, the rod 38 is detached from the hole portion 36, and the shaft portion 17 is rotatable.
[0024]
A small tapered hole 40 for positioning is provided below each hole 36, and a ball plunger (elastic engagement portion) 41 (FIG. 7) described later is elastically engaged with the hole 40. . On the upper end side of the shaft portion 17, a handle 42 for rotating operation for selectively using the holders 5 and 6 is provided.
[0025]
As shown in FIG. 6, a small-diameter fixed shaft 43 is disposed at the center of the shaft portion 17, and a cylindrical shaft portion 17 is rotatably provided around the fixed shaft 43 by upper and lower bearings 39. The upper and lower mounting portions 18 and the lower guide wall 23 are fixed to the shaft portion by press-fitting or bolting. The fixed shaft 43 is fixed to the lower block 44 with bolts, and the block 44 is fixed to the base plate 45. The shaft portion 17 can be replaced together with the fixed shaft 43.
[0026]
FIGS. 7-8 shows one Embodiment of the electric wire stripping apparatus containing a stripping process part.
As shown in FIG. 7, the shaft portion 17 is provided on the base plate 45, and the holder 6 slidably engaged with the lower guide portion 33 is attached to the rod 47 of the cylinder (driving means) 46 whose shank portion 10 is vertical. It is connected and can be raised and lowered.
[0027]
Reference numeral 37 denotes a stopper cylinder, and 41 denotes a positioning ball plunger having a ball part 41a that engages with the hole 40 (FIG. 1). The ball plunger 41 projects from the side of the column 48. By driving the vertical cylinder 46, the locking of the ball plunger 30 (FIG. 3) of the guide portion 33 and the engagement hole 16 (FIG. 2) of the lower holder 6 is released, and the lower holder 6 becomes the upper holder. Ascend towards 5.
[0028]
As shown in FIG. 8, the electric wire 35 is positioned by the electric wire guide plates 3 and 4 of the upper and lower holders 5 and 6, and the insulation coating on the outer side of the electric wire 35 is cut by the peeling cutters 1 and 2. The electric wire 35 is held by a pair of upper and lower clamps 49. The clamp 49 is driven to open and close by a driving means (not shown) such as a rack, a pinion and a cylinder, or a means (not shown) such as a chuck cylinder. The clamp 49 is retracted in the longitudinal direction of the electric wire as shown by an arrow A by a moving means (not shown) while holding the electric wire 35. As the moving means, a horizontal cylinder, a ball screw shaft or the like (not shown) is used. The clamp 49 side may be fixed and a mechanism for moving the shaft portion 17 side may be used.
[0029]
By retracting the clamp 49 that grips the electric wire 35 as shown by the arrow A, the intermediate portion in the longitudinal direction of the electric wire 35 is peeled off, and the conductor portion 35a is exposed. This is because the insulating coating on the side opposite to the clamp 49 comes into contact with the side surfaces of the blade portions of the peeling cutters 1 and 2 and is rubbed.
[0030]
Note that the wire stripping device 50 can be applied not only to stripping the intermediate portion in the longitudinal direction of the wire 35 but also the terminal portion of the wire 35. Moreover, the effect | action of the said wire stripping apparatus 50 is effective also as a wire stripping method.
[0031]
【The invention's effect】
As described above, according to the first aspect of the present invention, the holder is disposed to face the periphery of the shaft portion, and the peeling cutter and the electric wire guide plate are provided side by side in the tangential direction of the shaft portion. Therefore, the supply distance for setting the electric wires on the peeling cutter and the electric wire guide plate can be short, the electric wires can be set very easily, and the electric wires can be set accurately without positional deviation. Further, since a peeling cutter is attached to each holder, it is only necessary to replace the cutter for each holder when the peeling cutter is worn.
According to the invention described in claim 2, by temporarily fixing the holder with the peeling cutter to the guide portion by the temporary holding means, the holder can be detached and replaced with a holder having a different peeling cutter. Make it easier. Further, the temporary holding means accurately positions the holder with respect to the guide portion, and the engagement with the driving means of claim 1 is accurately performed. According to a third aspect of the present invention, the elastic engagement portion is elastically engaged with the engagement hole, whereby the temporary holding and detachment of the holder with respect to the guide portion can be easily performed with one touch. The effect in invention of 2 is promoted. According to the invention described in claim 4, since one end of the driving means can be easily connected to and detached from the holder by the shank portion, it is easy to select and use a holder having a different peeling cutter.
According to the invention described in claim 5, the type of the peeling cutter and the type of the wire guide plate corresponding thereto can be changed for each holder, so that it is possible to easily deal with the stripping processing of the electric wires having various wire diameters. According to the invention of claim 6, when the shaft portion is rotated, the elastic engagement portion is elastically engaged with the hole portion, so that the position of the shaft portion, that is, the peeling cutter is easily determined, Manual positioning of the shaft is facilitated. According to the seventh aspect of the present invention, when the rod enters the hole portion, the shaft portion is fixedly fixed in the rotation direction, and the position of the holder, that is, the peeling cutter is accurately defined.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a main part of a wire peeling apparatus according to the present invention.
FIG. 2 is an exploded perspective view showing a state where the holder is temporarily held in the mounting portion.
FIG. 3 is a perspective view showing a state in which a holder is temporarily held.
FIG. 4 is a longitudinal sectional view showing a state where a holder is temporarily held.
FIG. 5 is a plan view showing a main part of the wire stripping device.
FIG. 6 is a longitudinal sectional view showing a structure around a shaft portion in a main part of the wire peeling apparatus.
FIG. 7 is a side view showing the electric wire stripping device.
FIG. 8 is a side view showing a state where an electric wire is peeled off by an electric wire peeling apparatus.
FIG. 9 is a longitudinal sectional view showing an example of a conventional wire stripping device.
FIG. 10 is an exploded perspective view showing a skinning portion in another conventional wire stripping apparatus.
FIG. 11 is a plan view showing a conventional skinning part.
[Explanation of symbols]
1, 2 Peeling cutters 3, 4 Electric wire guide plates 5, 6 Holder 10 Shank portion 16 Engagement hole (temporary holding means)
17 Shaft part 30 Ball plunger (elastic engagement part which is temporary holding means)
33 Guide part 35 Electric wire 36 Hole part 37 Stopper cylinder 38 Rod 40 Hole part 41 Ball plunger (elastic engagement part)
46 cylinder (drive means)
49 Clamp 50 Wire stripping device

Claims (7)

A rotatable shaft part, a plurality of pairs of holders that are arranged to face each other in the axial direction around the shaft part, and one holder can move toward the other holder, and a skin that is attached to each holder a cutter and the wire guide plate, and driving means for moving one of the holder said toward the other holder, and means for pulling in the longitudinal direction while gripping the wire,該皮stripping cutter and the electric wire guide plate Are arranged side by side in the tangential direction of the shaft portion outside the shaft portion.   2. The electric wire skin according to claim 1, wherein the one holder is slidably engaged with a guide portion around the shaft portion, and temporary holding means is provided on the one holder and the guide portion. Peeling device.   3. The electric wire stripping device according to claim 2, wherein the temporary holding means is an engagement hole and an elastic engagement portion for the engagement hole. The wire peeling apparatus according to any one of claims 1 to 3, wherein the one holder includes a shank portion having a pair of opposing claw portions , and the shank portion is connected to the driving means.   The wire stripping device according to any one of claims 1 to 4, wherein the plurality of pairs of holders are arranged radially around the shaft portion.   6. A plurality of hole portions are provided in the radial direction of the shaft portion corresponding to the plurality of pairs of holders, and an elastic engaging portion for positioning is disposed in the hole portion. The wire stripping device described.   A plurality of hole portions are provided in the radial direction of the shaft portion corresponding to the plurality of pairs of holders, and a shaft fixing rod capable of moving forward and backward with respect to the hole portion is provided. Item 6. A wire peeling apparatus according to item 6.

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