JPH02179209A - Cable terminal-cutting tool - Google Patents

Abstract

PURPOSE:To enable conducting a cutting work easily and surely by fitting a nipper body with a cutter via a cutting angle-adjusting mechanism for adjusting the cutting angle of the radial cutting edge of said cutter and by varying a cutting pitch through changing said cutting angle. CONSTITUTION:A cutter support 17 for retaining a cutter 4 in the manner of enabling fixing and reciprocating said cutter in the radial direction of a cable is fitted to a nipper body 2 via a cutting angle-adjusting mechanism 59 for adjusting the cutting angle of the radial cutting edge of said cutter 4. Said cutting angle-adjusting mechanism 59 can change the cutting angle alpha0 of the radial cutting edge 4a and a cutting pitch by said edge 4a. Thus, a cutting work can be conducted easily and surely according to a worker's ability and the thickness dimension, etc., of the insulator 3 of said cable 1.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a cable end cutting tool.

[Prior art and problems to be solved] Generally, when connecting a cable such as a C■ cable, the cable is made of a conductor, an internal semiconductive layer, an insulator such as cross-linked polyethylene,
Since the external semiconductive layer, shielding layer, sheath, etc. are sequentially provided, the conductor at the end is first exposed and exposed.
After that, a so-called penciling process was performed, in which the insulator was scraped into a pencil shape.

The tool for performing this penciling is a so-called manual pencil, which has an insertion hole into which the end of the cable is rotatably inserted, and a cutter whose cutting edge is inclined to correspond to the inclination of the tapered surface. There was something in the shape of a cut.

Therefore, in such a device, the inclination angle of the tapered surface portion is determined by the inclination angle of the cutting edge with respect to the axial direction of the abrading cable, and the inclination angle is always constant. In other words, the length of the cutting edge is set to be long to correspond to the length of the tapered surface portion, and a considerable rotational torque is required for the operator, making the operation extremely difficult.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cable end cutting tool that can easily and reliably perform lead-out work and penciling work.

[Means to solve the problem]

In order to achieve the above object, the cable end cutting tool of the present invention includes a gripping body with a handle that grips a cable, and a tool attached to the gripping body that cuts the cable in the radial direction by rotating the gripping body around the axis of the cable. a cutter for cutting the insulation of the cable with a cutting edge for cutting in the direction of the cable axis and a cutting edge for cutting in the axial direction of the cable;
A cutter holder that holds the cutter fixedly and capable of reciprocating in the radial direction of the cable, and a cutting angle that adjusts the cutting angle of the radial cutting edge of the cutter. It is attached to the above-mentioned holding body via an adjustment mechanism.

[Effect]

When the cable is held between the clamping bodies, the handle is gripped, and the clamping bodies are rotated in the direction of the cable axis, the insulation of the cable is abraded in the radial direction by the cable radial cutting edge, and the cable insulation is In this case, the cutting angle adjustment mechanism adjusts the cutting angle of the radial cutting edge (that is, the plane perpendicular to the cable axis direction). By changing the cutting angle), the cutting pitch by this cutting edge can be changed.

(Example〕 Examples will be described below with reference to the drawings.

1, 2, and 3 show a cable end cutting tool according to the present invention, which includes cable I (FIGS. 4 and 5).
(see figure), and a cutter 4 attached to the clamping body 2 and cutting the insulator 3 of the cable l by rotation of the clamping body 2 about the cable l axis. There is.

Here, the cable l is, for example, a C■ cable, and as shown in FIGS. 4 and 5, it includes a conductor 5, an internal semiconducting layer 6 covering the conductor 5, and It consists of an insulator 3 that covers the insulator 3, and an external semiconducting layer (not shown), a shielding layer, a sheath, etc. that sequentially cover the insulator 3.

That is, this tool is for stripping off the imaginary portion shown in FIG. In this case, it is not removed, but is peeled off with a knife or the like after being ground.

Thus, the clamping body 2 consists of a pair of handle-equipped frames 9.on which a handle 8 for rotational operation is protruded. 10, a plurality of parallel movement guiding rods 11 that hold the frames 9 and 10 so that they can approach and separate from each other, and the dimension S between the frames 9 and 10 outside the insulator 3 of the cable 1. It consists of an interval adjustment mechanism 12 that adjusts and maintains the dimension corresponding to the diameter dimension D (see FIG. 4).

Here, the frame 9 refers to the upper and lower frames 13 made of hollow flat plates.
．． 14, a pair of front and rear connecting rods 15.15 that connect the upper and lower frames 13.14, and a mounting frame 16 that is connected to the upper and lower frames 13.14 and to which the handle 8 is removably attached by screw connection or the like. , consists of. Further, the upper and lower frames 13 and 14 are arranged in parallel, and the width of the upper frame 13 is larger than that of the lower frame I4, so that the outer side of the upper frame 13 is larger than that of the lower frame 14 in plan view. It protrudes outward from the outer end and matches the inner ends of the upper and lower frames 13 and 14. A pair of guide rollers 1 are provided at the inner ends of the upper and lower frames 13 and 14, respectively.
8... (that is, four guide rollers 18 are provided) are rotatably supported, and a guide member 19, which will be described later, is removably inserted and slidable at the outer end of the upper frame 13. A pair of insertion parts 20.20 are provided which are freely inserted. That is, the insertion part 20 is composed of upper and lower walls 23 and 24 having through holes 21 and 22, and left and right side walls 25 and 26,
A solid rod-shaped guide member 19 is removably and slidably inserted into the through holes 21 and 22. Further, the cutter 4 is attached to the upper surface 27 of the upper frame 13 via a canter holder 17.

In addition, when viewed from above, as shown in FIG. 2, the handle 8,
8 and the cutter 4 are shifted back and forth.

The mounting frame 16 is connected to an upper wall 31 connected to the upper frame 13.
, a side wall 32 to which the handle 8 is attached, and a lower wall 33 connected to the lower frame 14, and the lower wall 33 is provided with a recess 34 opening downward. 35° 35 is a reinforcing rib.

Thus, the frame 10 includes upper and lower frames 36 and 37 made of hollow flat plates disposed in parallel, a pair of front and rear connecting rods 38.38 that connect the upper and lower frames 36.37, and the upper and lower frames 36.3.
7, and a U-shaped mounting frame 39 to which the handle 8 is detachably attached by screw connection or the like. Further, the upper and lower frames 36 and 37 have the same shape, and the inner ends thereof have guide rollers 40 facing the guide rollers 18 of the frame 9, respectively (that is, the guide rollers 40 are ) are rotatably supported. In addition, the rollers 40 of this upper and lower frames 36 and 37
．． A notch 41.41 is formed at the inner end between 40,
A notch 42 □ 42 is also formed at the inner end of the upper and lower frames 13 , 14 of the frame body 9 between the rollers 1818 . Also,
The distal ends of the connecting rods 38.38 protrude from the upper surface 36a of the upper frame 36 to form protrusions 43.43.

The parallel movement guidance guide rods 11 are protruded from the front and rear ends of the upper and lower frames 13.14 of the frame body 9, and the seventh As shown in the figure, through holes 44 are provided in which the guide rods 11 can freely slide. That is, when the frame 9 is fixed and the frame 10 is reciprocated in the axial direction of the handle 8, the frame 10 moves in parallel along the guide rods 11 as indicated by arrows M and N. The rods 9 and 10 move toward and away from each other.

Next, the interval adjustment mechanism 12 is provided in the front and rear, and the frame body 9,
10 and a bolt rod 45 that interconnects the bolt rods 45;
A nut member 4G is screwed into the upper and lower guide rods 11.
The head part 45a is fixed to the mounting piece 47 fixed to the frame 11, and the threaded part 45b is inserted into the insertion hole 49 of the nut member abutting piece 48 provided protruding from the front and rear ends of the upper and lower frames 36 and 37 of the frame body 10.
It is inserted freely into the Further, the nut member 4G is disposed outside the abutment piece 48 and restricts outward movement of the frame 10. In other words, the oak 11 member 46 restricts the movement of the frames 9 and 10 in the direction of separation.

Therefore, the cable l is inserted between the frames 9 and 10, and as shown in FIG. 9.IO
are brought close to each other, and in this state, the nut member 46 of the spacing M adjustment mechanism 12 is screwed until it abuts the abutment piece 48, so that the spacing between the frames 9 and 10 can be maintained in that state. Therefore, the cable 1 is held between the holding bodies 2.

Further, a NAND member 50 interposed between a mounting piece 47 and an abutment piece 48 is screwed onto the bolt rod 45 of one (front in the figure) of the interval adjustment mechanism 12 so as to be able to be screwed forward and backward. That is, as shown in FIG. 9, when this tool is rotated in the direction of arrow X, if this nut member 50 is not present, the cable 1
This will loosen the clamping state of the nut member 50.
prevents loosening during cutting. That is, if the rotation direction of the nut member 50 is in the direction of the arrow X shown in FIG.
As shown in the illustration, it is attached to the front, but on the other hand, if it rotates,
Attached to the rear.

In addition, in order to release the pinched state of the cable 1, for example,
If the frame 10 is in the state shown by the imaginary line in FIG. 2, if the nut member 40 of the spacing adjustment mechanism 12 is screwed back to the state shown by the solid line, the frame 10 will move in the direction of arrow N to the position shown by the solid line. It becomes possible to slide and release the clamped state.

Next, the cutter 4 is attached to the cutter receiving plate 51 such that the protruding length of the blade portion 52 is adjustable. In addition, the blade portion 5
2 consists of a cutting edge 4a for cutting in the cable radial direction and a cutting edge 4b for cutting in the cable axial direction, and the cutting edge 4a and the cutting edge 4b are at right angles. The cutter 4 has a long hole 53 extending therethrough, and a bolt 54 for attaching the cutter 4 to the cutter receiving plate 51 is inserted through the long hole 53.
The amount of protrusion is adjusted.

Further, as shown in FIG. 6, the cutter holder 17 includes a fitting part 55 into which the cutter receiving plate 51 is fitted in a reciprocating manner,
Further, a fitting groove 56 is formed above the cutter 4, into which the cutter 4 is fitted reciprocally. That is, the fitting portion 55 and the fitting groove 56 form a T-shaped dovetail groove. and,
A fixing member 57 such as a wing nut is attached to this holder 17, and when the fixing member 57 is tightened, its tip comes into contact with the receiving plate 51, and the cutter receiving plate 51 is fixed in a non-slidable manner. , the cutter 4 is fixed in that state. Further, when the tightening is released, the cutter receiving plate 51 becomes free, and the cutter 4 becomes slidable. Note that the holding body 17 includes an upper wall 17a, an intermediate portion 17b, and a lower wall 17c.
It is made into one piece with a fixing device such as a bolt (not shown). Of course, this holding body 17 may be made integral.

Thus, this holder 17 is attached to the upper surface 27 of the upper frame 13 via the cutting angle adjustment mechanism 59. here,
The angle adjustment mechanism 59 includes an adjusting screw rod 61 that is screwed forward and backward into a threaded hole 60 of the holder 17, and the screw rod 61 is screwed to adjust the tip end surface 61a of the screw rod 61 to the holder 17. By adjusting the amount of protrusion from the lower surface 62, the angle of inclination of the holder 17 with respect to the upper surface 27 of the upper frame 13 is adjusted. 63 is the through hole 6
A bolt member 65 which is screwed onto the upper frame 13 via 4 is a threaded rod which is fixed to the upper frame 13 and protrudes from the upper surface 67 of the holder 17 via a through hole 66. Further, 68 is a nut member screwed onto the screw rod 65.

Therefore, by adjusting the amount of protrusion of the tip surface 61a of the screw rod 61, the inclination angle α of the cutter 4 with respect to the upper surface 27 of the upper frame 13 can be adjusted.
. will be adjusted, and the cutting angle α will be adjusted. (α. and α are a constant difference.) Here, the cutting angle α is an inclination angle with respect to a plane perpendicular to the axial direction of the cable 1, and this angle allows the cutting edge 4a to
The radial cutting pitch is determined by

That is, the cutter 4 is held by the cutter holder 17 so as to be fixed and capable of reciprocating in the radial direction of the cable 1,
Moreover, the cutting angle α (see FIG. 4) of the cutting edge 4a for radial cutting can be adjusted.

Therefore, when forming the outlet portion 30 of the cable l,
A size regulating member 69 as shown in FIGS. 1 and 3 is used.

That is, this dimension regulating member 69 includes an insertion cylinder 70° 70 that is removably inserted into the protruding portions 43 and 43 of the connecting rods 3B and 38, and a stopper member 72 that is approximately T-shaped in plan view. Then, insert the stopper member 72 into the cylindrical body 70. T.O.
and a connecting portion 73 that connects to. Specifically, a fastener 74 such as a butterfly bolt is attached to the lower part of the insertion cylinder 70, and when this fastener 74 is tightened, the tip of the fastener 74 is attached to the protrusion inserted into the insertion cylinder 70. 43, the insertion tube 70 is fixed, and conversely, by loosening the fixing member 74, the insertion tube 70 can be inserted into and removed from the protrusion 43. A screw rod 75 is fixed to the upper opening of the insertion cylinder 70, and a connecting plate 76 of the stopper section 72 is inserted into the screw rod 75.75, and nut members 77 and 78 are screwed thereto. .

In other words, the threaded rod 75 and the nut members 77, 78 constitute the connecting portion 73, and if the vertical positions of the nut members 77, 78 are changed, the stopper member 72 can be moved as shown by the imaginary line in FIG. The vertical position can be changed.

Thus, the stopper member 72 has an abutting plate portion 71 that abuts against the cable end surface 1a (see FIG. 4), and this abutting plate portion 71 is , is held parallel to a plane perpendicular to the direction of one axis of the cable.

Therefore, as shown in FIG. 9, the cable l is held between the holding bodies 2, and the cutter 4 is fixed in such a state that the tip of the cutting edge 4a reaches the internal semiconductive layer 6, and in this state, the handle 8. 8 and rotate this tool in the direction of arrow X, the insulator 3 is scraped off in the radial direction at the cutting edge 4a, and in the axial direction at the cutting edge 4b. Then, the cable end surface 1a successively protrudes toward the contact plate portion 71 and comes into contact with the corresponding contact plate portion 71. In other words, if this regulating member 69 is installed, the cable end face 1
The insulator 13 can be cut until a comes into contact with the insulator 13,
The dimension from the cutting edge 4a to the contact plate part 71 is the lead-out dimension L1 shown in FIG. It is possible to determine the dimensions and the opening dimension. In this case, since the stopper member 72 can change the vertical position, the distance H of the abutting plate part 7 from the clamping body 2 can be changed, and the opening dimension can be changed.

Further, when forming the tapered surface portion 7 by performing so-called pencilling, the above-mentioned dimension regulating member 69, cutter cutting depth adjusting member 79 and guide member 19 shown in FIGS. 1 and 3,
use.

The guide member 19 consists of a pair of vertical rods at and a horizontal rod 82 that connects the vertical rods 81 and 81, and the lower end of the adjusting member 79 is fixed to the horizontal rod 82. It consists of a sloping rod. In other words, the adjustment member 79 is inclined at a predetermined angle θ1 (the same angle as the taper angle θ of the tapered surface portion 7 (see FIG. 4)) with respect to the vertical rod 81.81, and the vertical rod 81.81 of the guide member 19 is The adjusting member 79 is inserted into the through holes 21, 21 of the frame body 9 so as to be able to reciprocate along the cable axis direction, and due to the reciprocating movement, the adjustment member 79 reciprocates along the cable l axis direction.

This adjusting member 79 is adjusted to the cutter 4 in a reciprocating state.
In other words, the adjustment member 79 is slidably inserted into the insertion hole 80 provided in the cutter receiving plate 51. Therefore, if the adjustment member 79 reciprocates, if the cutter receiving plate 51 is in a free state, the cutter 4
Due to the reciprocating motion, the blade portion 52 reciprocates in a plane perpendicular to the cable axis direction as shown by the arrow, and the amount of protrusion of the blade portion 52 relative to the cable 1 is changed.

The dimension regulating member 69 is also provided with a connecting piece 83 that connects the insertion cylinders 70 and 70, and the connecting piece 83 is provided with an insertion cylinder 84 into which the tip of the adjusting member 79 is inserted. ing. 85 is a reinforcing rib provided upright on the upper surface of the abutting plate portion 71 and the connecting plate portion 76.

Therefore, in order to form the tapered surface portion 7, as shown in FIG.
As shown in FIG.
．． 38, the opening portion 30 is first cut off, and then the regulating member 69 is removed from the connecting rod 38.3B, and the vertical rods 81, 81 of the guide member 19 are attached to the frame 9.
At the same time, the vertical rod 81.81 is inserted into the insertion cylinder 70.70 of the regulating member 69, and the fixing member 74 is tightened, as shown in FIG. 8(n). The regulating member 69 is attached to the guide member 19. Note that in this case, the adjustment member 79 is inserted into the insertion cylinder 84. In this state, if the operator grips the handles 8, 8 and rotates the tool in the direction of arrow X as shown in FIG. 9, the insulator 3 will be removed. Cutter receiving plate 5
When the cutter 4 is in a free state, the cutter 4 escapes in the outer diameter direction in accordance with the inclination angle of the adjustment member 79, and the tapered surface portion 7 is formed. That is, in the state where the formation of the tapered surface portion 7 is started, the first
As shown in FIG. 10 (1), the protrusion dimension of the cutter 4 from the cutter holder 17 is Y, and when the tapered surface portion 7 has been formed, the receiving plate 51 is as shown in FIG. 10 (II). Dimension Z
, and its protruding dimension is Y2. Note that Z and Yl have the same dimensions.

However, when penciling is performed, the guide member 1
The horizontal rod 82 of No. 9 is inserted into the recess 34 of the mounting frame 16 until it comes into contact with the upper end of the recess 34 . That is, penciling can be performed until the horizontal rod 82 comes into contact with the upper end of the recess 34, and the length L1 of the tapered surface portion 7 is determined.

Therefore, using this tool, Fig. 8 (1) to (Ill)
If you perform these steps in sequence, you can begin uttering and penciling. That is, as shown in Fig. 1.1, the insulator 3 is cut in the radial direction by the cutting edge 4a, and the inner peripheral surface of the insulator 3 is cut in the axial direction by the cutting edge 4b. The dregs pieces 90 are continuously formed into round slices.

Therefore, when cutting the insulator 3, the cutting angle α of the cutting edge 4a for cutting in the radial direction of the canter 4 can be changed, so that the grinding pinch in the radial direction can be changed. Therefore, for example, when the thickness of the insulator 3 is large, if the cutting angle α is made small, the rotational force to be applied to the clamping body 2 can be small, making the work easier. Furthermore, if the wall thickness of the insulator 3 is small, it can be easily removed even when the cutting angle α is relatively large, and the opening portion 30 and the tapered surface portion 7 can be removed in a short time. be able to.

Next, FIG. 12 shows another embodiment of the cutting angle adjustment mechanism 59, in which a screw rod 86 that can be screwed forward and backward is screwed into the upper frame 13 of the frame body 9, and the tip of the cough screw rod 86 is screwed into the upper frame 13 of the frame body 9. Surface 86a
can protrude from the upper surface 27 of the upper frame 13.

Through holes 87 and 92 are provided in the upper frame 13 and the holding body 17.
are provided, bolt rods 88.88 are inserted into the through holes 87.92, and NAND members 89.89 are inserted into the bolt rods 88, 88.
The holding body 17 is attached to the upper frame 13 by screwing it into the upper frame 13.

Therefore, by screwing the threaded rod 86 forward and backward from the back side of the upper frame 13 and adjusting the amount of protrusion of the tip end surface 86a of the threaded rod 86 from the upper surface 27, the holder for the upper surface 27 can be fixed. 7 inclination angle α. is adjusted. Note that the through hole 87 is connected to the bolt rod 88.
It has a larger diameter, and is set so that the bolt rod 88 can be inserted into the through hole 87 in accordance with the inclination of the holder 17.

Also, with respect to the cutter 4, the holding body 1 on the opposite side to the screw rod 86
A chamfered portion 93 is formed at the rear end of the lower surface of 7, and a linear contact portion 91 is formed. In other words, the holder 17 swings as shown by the arrow around the linear abutting portion 91, and the cutting angle α of the cutting edge 4a is changed.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

By the cutting angle adjustment mechanism 59, the cutting edge 4a for radial cutting
The cutting angle α can be changed, and the cutting pitch by the cutting edge 4a can be changed, so the cutting pitch can be adjusted according to the operator's ability and the wall thickness of the insulator 3 of the cable l. By making this change, the work of cutting the insulator 3 can be performed easily and reliably.

[Brief Description of the Drawings] Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a plan view, Fig. 3 is a side view, Fig. 4 is an enlarged front view of the cable after cutting, Fig. 5 is a plan view of the same, Fig. 6 is an enlarged sectional view taken along the line A-A in Fig. 2, Fig. 7 is an enlarged sectional view taken along the line B-B in Fig. 2, Fig. 8 is a work process diagram, and Fig. 9 10 is a plan view of the main part, FIG. 11 is an enlarged sectional view of the cable in the cutting state, and FIG. 12 is an enlarged sectional view showing another embodiment of the cutting angle adjustment mechanism. be. 1... Cable, 2... Clamping body, 3... Insulator,
4... Cutter, 4a... Cutting edge for cutting in the cable radial direction, 4b... Cutting edge for cutting in the cable axial direction, 17...
- Cutter holder, 59...cutting angle adjustment mechanism. Patent Applicant: Mitsubishi Cable Industries Co., Ltd. (In) Procedural Owner's Manual (spontaneous) 1. Hanyu's Patent No. 333657 of 1988 2. Name of the invention: Cable terminal description 1 extinguishing tool 3. Amendment Relationship with cases involving persons who commit

Claims (1)

[Claims] 1. A clamping body with a handle that clamps a cable, and a cutting edge attached to the clamping body for radially shaving the cable and axially shaving the cable by rotating the clamping body around the axis of the cable. a cutter for cutting the insulation of the cable with a cutting edge; A cable end cutting tool, characterized in that it is attached to the holding body via a cutting angle adjustment mechanism that adjusts the cutting angle of the radial cutting edge of the cutter.