KR200449910Y1 - Cutter for stripping of coating material on coated cable - Google Patents

Abstract

The present invention relates to a cable removing device for a cable, a fixed block fixed to the body of the air wrench, a pair of rotary knives fixed to the rotary shaft of the air wrench at intervals, and disposed below the rotary knife A cable removing device comprising a guide pedestal of a 'b' shape fixed to a fixed block; A 'c'-shaped incision groove cut in a predetermined length from the tip of the pedestal; A guide hole formed in a part of the pedestal to penetrate both sides; A vibrating piece inserted into the cutout groove, a part of the tip of which is rotatably pinned to the pedestal, and a rear end of which is hooked to the guide hole so as to move up and down; The cam is fixed to the rotating shaft in the space between the rotary knife, and further comprises a cam installed in contact with the vibrating piece.

According to the present invention, the cutting depth can be kept constant by the pedestal inserted into the sheath when removing the sheath, so that the cutting operation is easy and the pedestal always tries to proceed in the opposite direction to the core wire, so that the insulation layer of the inner core wire is always damaged. Safe coating work is possible while using the tool, and the convenience and efficiency of work can be improved due to the use of tools, and safety accidents can be prevented. The effect can be obtained.

 Cables, sheaths, brackets, rotary knives, core wires, vibrations, forwardness, cams

Description

Cable stripper {CUTTER FOR STRIPPING OF COATING MATERIAL ON COATED CABLE}

The present invention relates to a cable stripping device, and more particularly, a cable strip of thick and hard material mainly used for ships is automatically cut and removed by vibration and cutting, and the cable strip is improved so that the inner core wire is not damaged. Relates to a device.

In general, various wire cables laid during communication and electrical work should be connected to various equipment after removing the end cover of the cable at the final stage.

Here, it is well known that the time taken to remove the cable during the operation of removing the cable and connecting the cable takes more than 50% of the total working time, which is a major cause of the decrease in productivity.

In particular, the cable used in ships is thick, coated with a hard material, and the inner core wire is twisted in the form of strands to prevent twisting, so that the difference in distance from the core wire to the outer surface of the sheath is not constant. As a result, stripping (striping) with a blade or a dedicated knife will cause a problem of damage to the core wire.

In addition, when the insulation layer of the inner core wire is damaged due to a work error, it also causes a problem of increasing time and cost for repairing it.

In addition, when the outside air temperature stays in the sub-zero region, such as winter, the cable is hardened and becomes harder, so it is almost difficult to remove the cover using a blade or a dedicated knife.

Furthermore, in the process of removing the sheath of the cable using a blade or a dedicated knife, the risk of a safety accident in which the worker is injured by the blade or the dedicated knife is high, so high level of attention is required.

In consideration of this reality, as part of an effort to solve this problem, a "cable removal tool of a cable" using a double rotary blade has been disclosed.

The disclosed tool is provided with two rotary blades spaced apart from each other, with a sharp guide pedestal at the tip to allow the pedestal to be inserted into the sheath of the cable and then to rotate the rotary blade so that the sheath can be cut and removed to a certain depth. .

However, as described above, since ship cables are large in size and have a thick and hard material, they can prevent the core wires from being damaged by the pedestals. In addition, the cable should be coated while advancing in the longitudinal direction of the cable. However, the pedestal inserted into the sheath has a disadvantage in that its advancement is deteriorated due to the resistance of the sheath, which lowers the work efficiency.

In other words, the end of the pedestal should be dug sufficiently under the sheath prior to cutting, and the pedestal is difficult to penetrate because the non-woven fabric is wrapped under the sheath and the elasticity of the sheathing material is small, especially after the pedestal has penetrated. There was a problem that the end of the collision with the coating or the inner material does not proceed unless the material is damaged.

The present invention was created in view of the above-mentioned problems in the prior art, and was created to solve this problem. Since it is going to go in the opposite direction of the core wire, it is possible to safely cover the inner core wire without damaging the insulation layer at all times, and the use of tools improves the convenience and efficiency of work, and prevents safety accidents. The main purpose is to provide a cable removing device for the cable to improve the workability to shorten the working time, further improve the workability.

The present invention is a means for achieving the above object, a fixed block fixed to the body of the air wrench, a pair of rotary knife fixed to the rotary shaft of the air wrench and spaced apart, disposed below the rotary knife In the cable removing device comprising a guide pedestal of the 'b' shape fixed to the fixed block; A 'c'-shaped incision groove cut in a predetermined length from the tip of the pedestal; A guide hole formed in a part of the pedestal to penetrate both sides; A vibrating piece inserted into the cutout groove, a part of the tip of which is rotatably pinned to the pedestal, and a rear end of which is hooked to the guide hole so as to move up and down; It is fixed to the rotating shaft in the space between the rotary knife, and provides a cable removing apparatus for the cable characterized in that it further comprises a cam installed to be in contact with the vibrating piece.

At this time, the fixed block is also characterized in that the semi-circular cover is further installed to seal the top of the rotary knife.

In addition, the front end of the pedestal is characterized in that it is formed to be inclined upward to 8 to 12 ° with respect to the horizontal plane.

In addition, the upper surface of the pedestal is characterized in that the protrusion is formed to maintain the play of the rotary knife and 0.4-0.6mm.

In addition, the front end of the vibration piece is characterized in that it is fixed to be arranged more protruding than the front end of the pedestal.

According to the present invention, the cutting depth can be kept constant by the pedestal inserted into the sheath when removing the sheath, so that the cutting operation is easy and the pedestal always tries to proceed in the opposite direction to the core wire, so that the insulation layer of the inner core wire is always damaged. Safe coating work is possible while using the tool, and the convenience and efficiency of work can be improved due to the use of tools, and safety accidents can be prevented. The effect can be obtained.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view showing a coating removing apparatus according to the present invention, Figure 2 is a sample photograph of the coating removing apparatus manufactured according to the present invention, Figure 3 is a bottom photo of Figure 1, Figure 4 is a top view of Figure 1 5 is a photograph showing an enlarged view of the main portion of Figure 1, Figures 6 and 7 is a schematic view showing the structure of the rotary knife and the pedestal according to the present invention, Figure 8 is the use of the coating removal device according to the present invention It is a photograph showing the state.

Prior to the description of the present invention, the cable usually has a sheath covering, at least one core wire is provided inside the sheath, and an inner sheath is further formed between the sheath and the inner core wire. It also has a structure.

In addition, the drive source of the device in the present invention can be used as long as it provides a rotational force, such as a drive motor, pneumatic tools.

Preferably, a pneumatic tool as illustrated in the drawings is preferable, and in the case of using a drive motor, various types of gears may be installed in combination as a power transmission means for transmitting rotational force.

In the case of the pneumatic tool, it is commonly referred to as an air wrench, and the air wrench is a well-known commercial item that rotates a rotating shaft while the blade rotates at high speed by the supply pressure of air by the operation of a switch. Is omitted.

As shown in Figures 1 to 5, the coating removal apparatus according to the present invention includes an air wrench 100 which is a known pneumatic tool.

In addition, the fixed block 110 is firmly fixed to a part of the body of the air wrench 100.

In addition, a circular rotary knife 200 is fixed to the rotary shaft 120 of the air wrench 100.

Therefore, the rotary knife 200 is in a rotatable state by the air pressure applied to the air wrench 100.

In addition, the rotary knife 200 is a double blade formed in pairs at intervals, as shown in Figures 6 and 7, the reason for forming the two blades is that the cutting when the coating is cut by the rotary knife 200 Since the sheath is going to go up in the direction of rotation of the blade and the sheath is going to go down in the opposite direction, the blade is pressed by the cut-out sheath and interrupts the progress of the blade. The up and down flow of the coating stripped in the space between the blades is canceled to suppress the up and down flow so that the cutting can be cut immediately without pressing the rotary knife 200 to facilitate the progress of the rotary knife 200.

And, between the rotary knife 200 is fixed to the shaft so that the cam 210 of the type illustrated in (a) of Figure 6 can be rotated with the rotary knife 200 on the rotary shaft (200).

In addition, the upper portion of the rotary knife 200 is more preferably sealed to be secured by the cover 300 of the type as shown in Figures 1 and 2 to ensure the safety of the operator.

In this case, the cover 300 is formed in a substantially semi-circular shape, and one end thereof is firmly fixed to the fixing block 110 to be fixed in position.

On the other hand, the pedestal 400 is provided at a predetermined interval at a position directly below the rotary knife 200, the pedestal 400 is inserted into the sheath of the initial cable while preventing the rotary knife 200 from penetrating deeply into the sheath. Means for guiding the position to be cut.

The pedestal 400 is formed in a substantially 'b' shape, the bent top is firmly fixed to the fixed block 110 is formed integrally with the fixed block 110.

In particular, the distal end of the pedestal 400 is formed to be inclined upward at a predetermined angle θ, for example, about 8 to 12 degrees, more preferably about 10 degrees, based on a flat ground.

The reason why the front end of the pedestal 400 is formed to be inclined upward is to prevent the pedestal 400 from penetrating toward the core wire during the progression of the pedestal 400. By facing the surface of the core to prevent breakage.

In addition, the reason for limiting the angle is less than 8 ° is ineffective, if it exceeds 12 ° because it does not maintain the state penetrated to the coating to a certain depth, because it is moved to the surface, the cutting ability is reduced, the above range It is most preferable to limit to.

In addition, the pedestal 400, as shown in Figures 2 and 6,7, a portion of the length is approximately 'c' shape (a kind of fork shape) is open to the cutting groove 440 is formed, this cutting groove The vibrating piece 410 is fitted to the 440 in a shape that slightly protrudes from the tip of the pedestal 400.

At this time, the vibrating piece 410 is a pointed tip is pointed, a portion of the tip is fixed by the pin 130 so as to move up and down inside the incision groove 440, the rear end to the pedestal 400 It is axially fixed to the flow, for this purpose, a portion of the pedestal 400 is formed with a guide hole 430, as shown in the example of Figure 2 is installed to be movable in the guide hole 430.

In addition, the rear end of the vibrating piece 410 is disposed so as to be in contact with the cam 210, the vibrating piece 410 is installed to be able to flow up and down when the cam 210 is rotated.

To this end, the vibrating piece 410 may be configured to be slightly bent in the form of a leaf spring, by installing a known torsion spring or a conventional coil spring on the shaft pressed by the cam 210 and then elastically back to the original position Can be configured to return.

In addition, as shown in (b) of Figure 6, the top surface of the front end of the pedestal 400, it is preferable that the projection 420 to maintain a distance of approximately 0.4 ~ 0.6mm with the rotary knife 200 is preferably formed. .

The protrusion 420 is applied to the coating during the cutting to prevent the cutting failure (fiber chewing on the blade) by the fiber other than the rubber component contained in the coating when the rotary knife 200 cuts the coating. It is especially preferable to limit to the above range because the spacing is too narrow, the cutting efficiency is lowered, and if it is too wide, the tension is not given.

The stripping device according to the present invention having such a configuration has the following operating relationship.

First, the pneumatic pressure supplied through the air wrench 100 rotates the rotary knife 200.

In this state, the tip of the pedestal 400 penetrates into the end of the cable.

Then, the sheath is heard at a certain height while being spaced between the sheath of the cable and the insulating layer of the inner core.

Subsequently, when the device of the present invention is pushed in the longitudinal direction of the cable, the sheath is lifted up to the bottom of the rotary knife 200 while entering the portion of the front end of the pedestal 400, wherein the rotary knife 200 is the rising sheath. It will be cut to form as shown in FIG.

At this time, the cam 210, which is being rotated simultaneously between the rotary knives 200, vibrates the vibrating piece 410 installed on the pedestal 400 periodically.

Accordingly, the pedestal 400 has a fine play space in the coating by the vibrating piece 410, and the play space smoothly proceeds because the pedestal 400 improves the advancement of the cable along the longitudinal direction of the cable. This becomes possible.

In other words, the resistance of the materials in the coating is reduced by the vibration of the vibrating piece 410, so that the forwardness of the pedestal 400 is improved, which facilitates the cutting operation without the operator applying a large force. Let them do it.

In addition, the front end portion of the pedestal 400 is inclined upward at a predetermined angle, so that the force to penetrate toward the core wire is weakened when the coating is cut, and the core wire is damaged by the pedestal 400 unless it is pressed with a very strong force. The phenomenon is prevented.

Furthermore, the protrusion 420 is formed on the upper surface of the pedestal 400 to serve to apply a constant tension to the coating at at least two points at which the rotary knife 200 operates so that the cutting ability of the coating is further improved. .

1 is an exemplary view showing a coating removing device according to the present invention,

Figure 2 is a sample photo of the coating removal device manufactured according to the present invention,

3 is a bottom photograph of FIG. 1;

4 is a top view of FIG. 1;

5 is an enlarged view of the main portion of FIG.

6 and 7 is a schematic view showing the structure of the rotary knife and the base according to the present invention,

Figure 8 is a photograph showing a state of use of the coating removing device according to the present invention.

♧ description of the symbols for the main parts of the drawing ♧

100 .... air wrench 110 .... fixed block

120 .... rotary shaft 200 ... rotary knife

210 .... cam 300 .... cover

400 ..

420 .... Turn 430 .... Guide hole

Claims (5)

A fixed block fixed to the body of the air wrench, a pair of rotary knives fixed to the rotary shaft of the air wrench at intervals, and a 'b' shaped guide disposed at the lower side of the rotary knife and fixed to the fixed block Claims [1] A stripping device for cables comprising a pedestal; A 'c'-shaped incision groove cut in a predetermined length from the tip of the pedestal; A guide hole formed in a part of the pedestal to penetrate both sides; A vibrating piece inserted into the cutout groove, a part of the tip of which is rotatably pinned to the pedestal, and a rear end of which is hooked to the guide hole so as to move up and down; And a cam fixed to the rotating shaft in the space between the rotary knives and installed in contact with the vibrating piece. The method of claim 1, Cable fixing device for the cable characterized in that the semi-circular cover for sealing the upper portion of the rotary knife is further installed on the fixed block. The method of claim 1, further comprising: The front end of the pedestal is a cable removing device, characterized in that formed inclined upward to 8 to 12 ° with respect to the horizontal plane. The method of claim 1, further comprising: Cable stripping device for the cable, characterized in that the protrusion on the top surface of the pedestal and the projection to maintain the clearance of 0.4-0.6mm. The method of claim 1, further comprising: The front end of the vibration piece is fixed to protrude more than the front end of the pedestal, characterized in that the cable removal device for the cable.

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