CN201075613Y - Cable opening knife - Google Patents

Abstract

The utility model relates to a cable knife which is provided with a knife carrier, wherein, the knife carrier is provided with a pair of carriage saddles which are correspondingly arranged and a slide bar which is used for connecting the two carriage saddles, a knife bar is movably arranged on each carriage saddle, a knife head is arranged at the front end of the knife bar, the carriage saddle is provided with a self-locking groove and a dial piece groove, a self-locking assembly which is acted on the slide bar is arranged inside the self-locking groove, a dial piece which is connected with the knife bar moulding surface is arranged inside the dial piece groove, a feeder which is acted on the knife bar is also arranged on the carriage saddle. The utility model can achieve the self-locking of the carriage saddles and the adjustment of the knife head angle and the feeding depth, has simple structure and convenient use, and can slit and cut the cable insulating outer sheath easily.

Description

Cable cutter

technical field

The utility model relates to a tool for cutting off and stripping the insulating outer sheath of cables.

Background technique

A utility model patent specification with Chinese Patent No. 03220552.X discloses a cable cutter, which is a cable cutter for an inner star wheel roller roller overrunning clutch. The cable cutter has a blade, a tool holder, and a knob. , handle, connecting rod, and an inner star wheel roller overrunning clutch is installed at one end of the handle. When in use, according to the thickness of the outer sheath of the cable to be opened, turn the knob to make the blade protrude from the knife holder seat, insert the blade into the outer sheath of the cable, hold the handle, press hard against the cable, and move along the B To rotate, at this time the inner star wheel roller overrunning clutch is in the state of engagement. Due to the resistance of the blade cutting the outer sheath and the component force of the handle turning in the B direction, the arc-shaped edge distributed on the roller circumferential surface of the inner star wheel roller overrunning clutch cuts into the cable outer sheath, and the handle continues When turning in direction B, the roller rolls in direction C, so that the blade cuts the outer sheath. When the handle is turned along the A direction, the inner star wheel overrunning clutch is in the disengaged state. Now the handle 7 is easily rotated along the A direction. The above-mentioned utility model is a single-blade cable cutter, which needs to be rotated forward and reverse alternately and repeatedly, so that the cable cutter intermittently cuts the outer sheath, which is not very convenient to use. The one-way locking mechanism adopts an inner star wheel The column overrunning clutch is still not simple enough in structure, and the outer sheath can only be cut longitudinally, and the outer sheath cannot be cut off.

Utility model content

The purpose of the utility model is to provide a cable cutter which is easy to use and simple in structure and is used for cutting the insulating outer sheath of a cable.

The technical solution for realizing the purpose of this utility model is: a cable cutter with a knife rest; the knife rest has a pair of oppositely arranged knife rest seats and a slide bar for connecting the two knife rest seats, each knife rest seat There is a cutter rod on the upper movable part, and a cutter head is arranged on the front end of the cutter rod; there are self-locking slots and paddle slots on the knife holder seat, and a self-locking component acting on the sliding rod is arranged in the self-locking slot, and a self-locking component acting on the sliding rod is arranged in the paddle slot. There is a paddle connected with the shape of the knife bar; the knife holder seat is also provided with a knife feeding device acting on the knife bar.

The self-locking device of the above-mentioned cable cutter has a self-locking piece and a spring. The upper part of the self-locking piece is provided with a through hole. On the rod and at the rear side of the self-locking piece, the bottom end of the self-locking piece is hinged on the rear side of the bottom of the self-locking groove, and the self-locking piece is inclined to the front side.

The knife feeding device of the above-mentioned cable cutter has a handle that is rotatably connected to the knife holder seat. The center of the handle has a threaded hole, and the rear part of the knife rod has threads.

A mechanical digital display assembly is provided on the knife feeding device of the above-mentioned cable cutter.

The mechanical digital display device of the above-mentioned cable cutter has a dial ring, an internal gear dial and 1 to 4 transition gears; The disk is coaxially arranged outside the dial ring, and the transition gear is connected to the tool rest seat and is located between the dial ring and the inner gear dial, and the dial ring can drive the inner gear dial to rotate through the transition gear; A window is arranged at the gear dial, and scales are arranged on the outside of the handle.

The front ends of the two tool holders of the cable cutter are each provided with a pair of pulleys for clamping cables.

Compared with the prior art, the above-mentioned technical solution of the utility model has the following advantages: (1) the cable cutter of the utility model has a self-locking assembly, and the tool holder seat can move forward during use, but cannot move backward, so as to realize self-locking. Only the user manually controls the lock so that the knife rest seat can be moved backwards, so the utility model is firm and reliable. (2) The angle of the knife rod of the present utility model can be adjusted. When using the flat knife head, when the knife head is set vertically, it can cut the cable insulation outer sheath in a straight line; when the knife head is set horizontally, it can cut the cable The insulating outer sheath is cut horizontally; when the cutter head is set obliquely, it can cut the cable insulating outer sheath in a spiral longitudinal direction, which is not only labor-saving but also fast. (3) The utility model has fewer parts, so the structure is simple and easy. (4) The cable cutting knife of the utility model has a knife feeding device and a mechanical digital display device, which can accurately adjust the cutting depth and has good practicability.

Description of drawings

In order to make the content of the utility model easier to understand clearly, the utility model will be described in further detail below according to specific embodiments of the utility model in conjunction with the accompanying drawings, wherein

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a partial cross-sectional view along A-A in Fig. 1 .

Fig. 3 is a schematic diagram of B-B in Fig. 1 .

Fig. 4 is a structural schematic diagram of the connection between the plectrum of the utility model and the profile of the cutter bar.

Fig. 5 is a structural schematic diagram of the mechanical digital display of the utility model.

Detailed ways

See Fig. 1 to Fig. 4, the utility model is a kind of cable cutting knife, has a knife holder; The said knife holder has a pair of oppositely arranged knife holder seats 1 and a slide bar 2 for connecting the two knife holder seats 1, each A tool holder 1 is movable to be provided with a cutter bar 3, and the front end of the cutter bar 3 is provided with a cutter head 31, and the cutter head 31 is a triangle, which is a kind of double-edged pointed cutter head; A pair of pulleys 8 for clamping cables are provided, and two rollers 8 on each knife rest seat 1 are respectively arranged above and below the cutter head 31. The pulley 8 in the present embodiment is a concave pulley, and two rollers 8 on the two knife rest seats The corresponding two pulleys 8 can clamp the cable between their concave faces. There are self-locking grooves 11 and plectrum grooves 12 on the knife rest seat 1 .

A pick 4 connected to the surface of the cutter bar 3 is arranged in the pick groove 12, and the angle of the cutter head 31 can be adjusted through the pick 4, so that the linear longitudinal cutting, the spiral longitudinal cutting and the transverse cutting of the cable cutter can be realized; When the cutter bar is in the inclined position, that is, the cutter head is in the inclined position, the cable insulation outer sheath is cut longitudinally in a spiral shape, which is not only labor-saving, but also fast. The knife holder 1 is also provided with a knife feeding device 6 acting on the knife bar 3 .

The self-locking groove 11 is provided with a self-locking assembly 5 acting on the slide bar 2. The self-locking assembly 5 has a self-locking piece 51 and a spring 52. The top of the self-locking piece 51 is provided with a through hole 51-1. 51 is set on the slide bar 2 near the opening side of the self-locking groove 11 through the above-mentioned through hole 51-1, the spring 52 is arranged on the slide bar 2 and is at the rear side of the self-locking piece 51, and the bottom end of the self-locking piece 51 is hinged On the rear side of the bottom of the self-locking groove 11, the self-locking piece 51 of the self-locking assembly 5 is tilted forward under the action of the spring 52, and the through-hole opening of the self-locking piece 51 sleeved on the slide bar 2 produces a pair of opposite sides to the slide bar 2. radial pressure; when the tool holder seat 1 is pushed forward relative to the slide bar 2, the bottom end of the self-locking piece 51 moves forward with the tool holder seat 1, and the upper part of the self-locking piece 51 is due to the gap between the through hole and the slide bar 2 The frictional force produced by the radial pressure between them hinders the upper part of the self-locking plate 51 from moving forward, and the upper part of the self-locking plate 51 swings slightly backward, so that the radial pressure between the through hole and the slide bar 2 is reduced. The generated frictional force decreases, and the tool rest seat 1 can slide forward until reaching a predetermined position. When the tool holder seat 1 is subjected to external force and slides backwards, the bottom end of the self-locking piece 51 moves backward with the tool holder seat 1. The frictional force prevents the upper part of the self-locking piece 51 from moving backwards, and the self-locking piece 51 is more inclined forward, so that the radial pressure between the through-hole orifice on the upper part of the self-locking piece 51 and the slide bar 2 increases, and the resulting The frictional force also increases thereupon, causing the knife rest seat 1 to be locked on the slide bar 2 and cannot move backward. If the user needs to move the tool rest seat 1 backward, he only needs to move the upper part of the self-locking piece 51 backward, so that the radial pressure between the through-hole opening on the upper part of the self-locking piece 51 and the slide bar 2 is reduced, and then Pull the knife rest seat 1 backwards to get final product.

The feed device 6 has a handle 61 that is rotatably connected to the knife rest seat 1. The center of the handle 61 has a threaded hole, and the rear portion of the knife bar 3 is threaded. transmission. The feeding device 6 is provided with a mechanical digital display assembly 7 .

See Fig. 5, described mechanical digital display device 7 has dial ring 71, internal gear dial 72 and 1 to 4 transition gears 73, adopts 3 transition gears 73 in the present embodiment; Described dial ring 71 is fixed with handle 61 Connected, it is set on the tool bar 3 and fits with the tool bar 3 in a gap, the internal gear dial 72 is coaxially arranged outside the dial ring 71, the transition gear 73 is arranged on the tool holder seat 1 and is located between the dial ring 71 and the inner gear scale Between the disks 72; the tool holder seat 1 is provided with a window 13 corresponding to the internal gear dial 72, and the handle 61 has a scale on the outside. When the handle 61 is turned, the handle 61 drives the dial ring 71 to rotate, and the dial ring 71 stirs the transition gear 73 to rotate, and the transition gear 73 drives the internal gear dial 72 meshed with it to rotate, and the numbers on the dial 72 can be set on the tool rest seat 1 displayed in window 13 above.

When in use, first put the cable cutter of the present utility model on the cable that needs to be cut, and push the two tool holders 1 to move towards each other. After the pulley 8 of the tool holder 1 clamps the cable, the self-locking assembly of the cable cutter 5. Lock the two knife holders 1, adjust the two knife heads 31 to the required angle through the paddle 4, and then adjust the knife feed depth of the two knife heads 31 through the knife feed device 6 of the cable cutter and the mechanical digital display component 7, Manually apply an external force to make the cable cutter rotate around the cable to easily cut or cut off the outer sheath of the cable insulation.

Claims (6)

1. A cable cutter with a knife rest; It is characterized in that: said knife rest has a pair of oppositely arranged knife rest seats (1) and a slide bar (2) for connecting the two knife rest seats (1), Each tool holder (1) is movable with a cutter bar (3), and the front end of the cutter holder (3) is provided with a cutter head (31); the tool holder (1) has a self-locking groove (11) and a paddle Groove (12), the self-locking component (5) acting on the slide bar (2) is provided in the self-locking groove (11), and the puller that is connected with the profile of the cutter bar (3) is arranged in the pick groove (12). sheet (4); the knife rest seat (1) is also provided with a knife feeding device (6) acting on the knife bar (3). 2. The cable cutter according to claim 1, characterized in that: the self-locking assembly (5) has a self-locking piece (51) and a spring (52), and the upper part of the self-locking piece (51) is provided with a through hole ( 51-1), the self-locking piece (51) is sleeved on the slide bar (2) near the opening side of the self-locking groove (11) through the above-mentioned through hole (51-1), and the spring (52) is arranged on the slide bar ( 2) on and at the rear side of the self-locking piece (51), the bottom end of the self-locking piece (51) is hinged on the rear side of the bottom of the self-locking groove (11), and the self-locking piece (51) is inclined to the front side. 3. The cable cutting knife according to claim 2, characterized in that: the knife feeding device (6) has a handle (61) rotatably connected to the knife rest seat (1), and the center of the handle (61) has a threaded hole , the rear portion of the knife rod (3) has threads, and the handle (61) is threadedly connected with the knife rod (3) to form a screw drive. 4. The cable cutting knife according to claim 3, characterized in that: a mechanical digital display assembly (7) is provided on the knife feeding device (6). 5. The cable cutter according to claim 4, characterized in that: the mechanical digital display assembly (7) has a pull ring (71), an internal gear dial (72) and 1 to 4 transition gears (73) ; The pulling ring (71) is fixedly connected with the handle (61), which is sleeved on the knife bar (3) and fits with the knife bar (3) in clearance, and the inner gear dial (72) is coaxially arranged on the dialing ring (71 ), the transition gear (73) is connected to the tool rest seat (1) and is located between the dial ring (71) and the inner gear dial (72), and the dial ring (71) can drive the inner gear through the transition gear (73) The dial (72) rotates; a window (13) is provided on the tool rest seat (1) corresponding to the inner gear dial (72), and the handle (61) has a scale on the outside. 6. The cable cutter according to claim 1, characterized in that a pair of pulleys (8) for clamping cables are respectively provided at the front ends of the two tool holders (1).

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