CN115430866A - Optical fiber protective tube cutting tool for OPGW optical cable - Google Patents

Abstract

The invention relates to a cutting tool for an optical fiber protection tube of an OPGW optical cable, comprising a bracket and a knife holder, one end of the bracket and the knife holder is hinged through a rotating shaft, and the other end of the bracket and the knife holder can rotate around the rotating shaft to open or engage. The head of the bracket and the knife rest is provided with a down-cutting mechanism, a rotary cutting mechanism is provided between the down-cutting mechanism and the rotating shaft, and a return spring is connected between the bracket and the knife rest, when the bracket and the knife rest are engaged , the return spring remains in its original state, and when the bracket and the knife rest are opened, the return spring is stretched to generate a reverse force acting on the rotary cutting mechanism and the down-cutting mechanism. The cutting depth of the invention is controllable, avoiding the problem of damage to the optical fiber due to excessive cutting depth, the end surface of the protective steel pipe after breaking is flat, will not tilt inward, will not scratch the optical fiber, and is suitable for cutting various wires of different thicknesses without Frequent adjustment, less operation steps, high work efficiency.

Description

Optical fiber protection tube cutting tool for OPGW optical cable

technical field

The invention relates to a cutting tool for an optical fiber protective tube of an OPGW optical cable.

Background technique

OPGW optical cable is also called optical fiber composite overhead ground wire. The optical fiber is placed in the ground wire of overhead high-voltage transmission line to form an optical fiber communication network on the transmission line. This structure has dual functions of ground wire and communication, and is widely used in field of electrical communication.

During the construction process of OPGW optical cable splicing, it is necessary to peel off the optical cable layer by layer to leak the stainless steel protective tube inside. After cutting the stainless steel protective tube with a pipe cutter, the optical fiber inside can be leaked out, and then the optical fiber splicing operation can be carried out.

The Chinese patent with the publication number CN111482651A in the prior art discloses an optical cable cutting device, which includes a base; a limiting component, which is arranged on the base, and a limiting space is formed on the limiting component, and the limiting space is used to fix the piece to be cut ; The cutting assembly is set facing the limiting space, and the cutting assembly includes: a cutting knife, at least one side of the cutting knife facing the limiting space is formed with a blade; the side of the cutting knife is formed with a limiting surface facing the limiting space, along the first direction, a preset distance is formed between the tip of the blade and the limiting surface, and the distance between the tip and the limiting component is smaller than the distance between the limiting surface and the limiting component, wherein the first direction is directed from the limiting component to the cutting component ; The adjusting component is arranged on the base and connected to the cutting component, and the adjusting component is used to control the cutting component to approach or move away from the limiting space.

The above-mentioned prior art is to fix the piece to be cut through the limiting space, and then frequently adjust the position of the cutting assembly to control the cutting assembly and the cutting depth. The operation steps are cumbersome and the work efficiency is not high.

Contents of the invention

The technical problem to be solved by the present invention is to provide an optical fiber protective tube cutting tool for OPGW optical cable, which simplifies the operation steps, is convenient for cutting, and has high working efficiency.

In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

An optical fiber protection tube cutting tool for OPGW optical cable, including a bracket and a knife holder, one end of the bracket and the knife holder is hinged through a rotating shaft, and the other end of the bracket and the knife holder can rotate around the rotating shaft to open or engage, and the bracket And the head of the tool holder is provided with a down-cutting mechanism, a rotary cutting mechanism is provided between the down-cutting mechanism and the rotating shaft, and a return spring is connected between the bracket and the knife post. When the bracket and the knife post are engaged, the The return spring remains in its original state, and when the bracket and the knife rest are opened, the return spring is stretched to generate a reverse force acting on the rotary cutting mechanism and the down-cutting mechanism.

Preferably, the rotary cutting mechanism includes a first limiting part arranged on the bracket, and a first blade arranged on the knife holder, and the first limiting part cooperates with the first blade to radially rotary cut the piece to be cut. .

Preferably, the down-cutting mechanism includes a second blade arranged on the bracket, and a second limiting part arranged on the knife holder, the second blade cooperates with the second limiting part to axially cut the piece to be cut .

Preferably, the first blade and the second blade are vertically arranged, and the edges of the first blade and the second blade are both provided with high-density serrations.

Preferably, a sliding slot is provided on the bracket, and the first limiting part is slidably arranged in the sliding slot and fixed by a locking screw.

Preferably, a plurality of limiting grooves with different hole diameters are arranged side by side on the top of the first limiting part, and a slider is provided at the bottom of the first limiting part, and the slider is slidably arranged in the sliding groove.

Preferably, the limiting groove is an arc-shaped groove, and the plane where the limiting groove is located perpendicularly intersects with the cutting plane of the first blade.

Preferably, the knife holder is provided with a cutting limit protection mechanism for controlling the cutting depth of the first blade.

Preferably, the cutting limit protection mechanism includes a chute arranged on one side of the tool holder, a limit projection arranged in the chute, and a fixing bolt for fixing the limit projection, and the limit projection It can slide up and down along the chute and be fixed by fixing bolts.

Preferably, the distance between the limiting protrusion and the edge of the first blade is less than or equal to the thickness of the optical fiber protection tube In summary, the advantages of the present invention are as follows:

1. When cutting wires of different thicknesses, it only needs to be stuck in the matching limit slot, no need for frequent adjustment, less operation steps and high work efficiency;

2. The first limiting part can be slidably set on the bracket. When the edge of the first blade becomes blunt after multiple cuts, the cutting position of the first blade can be changed by adjusting the position of the first limiting part to improve the second cutting edge. The utilization rate of a blade;

3. The cutting limit protection mechanism is set to make the cutting depth controllable, avoiding the problem of excessive cutting depth and damage to the optical fiber. The time for optical cable fusion is shortened, and the construction quality of optical cable splicing is improved.

Description of drawings

Fig. 1 is the structure schematic diagram when rotary cutting state of the present invention;

Fig. 2 is the structural representation when the present invention cuts down the state;

Fig. 3 is a structural schematic diagram of the first limiting part in the present invention;

Fig. 4 is a schematic cross-sectional view of the stent of the present invention.

Reference signs:

1. Bracket; 11. Chute; 12. Locking screw; 2. Knife holder; 3. Rotary shaft; 4. Down-cutting mechanism; 41. Second blade; 42. Second limiting part; 5. Rotary cutting mechanism; 51. The first limit part; 511. The limit groove; 512. The slider; 52. The first blade; 6. The return spring; 7. The cutting limit protection mechanism; 71. The chute; 72. The limit bump; 73. Fixing bolts; 8. Parts to be cut.

detailed description

In order to illustrate the overall concept of the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer", "vertical", "horizontal", " Words such as "top", "bottom", etc. indicating orientation or positional relationship are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device/element must have a specific orientation or are constructed and operative in a particular orientation and therefore are not to be construed as limiting the invention.

An optical fiber protective tube cutting tool for an OPGW optical cable, as shown in Figure 1-4, includes a bracket 1 and a knife holder 2, one end of the bracket 1 and the knife holder 2 is hinged by a rotating shaft 3, and the bracket 1 and the knife holder 2 are in the other One end can rotate around the rotating shaft 3 to open or engage. The head of the bracket 1 and the tool holder 2 is provided with a down-cutting mechanism 4, and a rotary cutting mechanism 5 is provided between the down-cutting mechanism 4 and the rotating shaft 3. A return spring 6 is connected between the support 1 and the knife rest 2. When the support 1 and the knife rest 2 are engaged, the return spring 6 remains in its original state. When the support 1 and the knife rest 2 are opened, the return spring 6 is stretched A reverse force is generated to act on the rotary cutting mechanism 5 and the down-cutting mechanism 4 . The operation is labor-saving, no frequent adjustment is required, the operation steps are few, and the work efficiency is high.

In order to facilitate the rapid cutting of the optical fiber protection tube, a rotary cutting mechanism 5 is provided. The rotary cutting mechanism 5 includes a first stopper 51 arranged on the bracket 1, and a first blade 52 arranged on the knife holder 2. The bracket 1 is provided with a chute 11, the first limiting part 51 is slidably arranged in the chute 11 and fixed by the locking screw 12, the first limiting part 51 cooperates with the first blade 52 to be cut 8 radial rotary cutting. Wherein, the top of the first limiting portion 51 is provided with a plurality of limiting grooves 511 with different apertures side by side, and the bottom of the first limiting portion 51 is provided with a slider 512, and the slider 512 can be slidably arranged on the chute 11. Inside. The limit groove 511 is an arc groove, but it is not limited thereto, and can be flexibly deformed according to needs to achieve the same effect in practical applications. The plane where the limiting groove 511 is located is perpendicular to the cutting plane of the first blade 52 .

In order to facilitate the removal of the cut optical fiber protection tube, a down-cut mechanism 4 is provided, and the down-cut mechanism 4 includes a second blade 41 arranged on the head of the bracket 1, and a second stopper 42 arranged on the knife holder 2 The head of the knife holder 2 is set in an arc and made of plastic, which is safe to use. The second blade 41 cooperates with the second stopper 42 to cut the piece 8 to be cut axially. The first blade 52 and the second blade 41 are vertically arranged, and the edges of the first blade 52 and the second blade 41 are both provided with high-density serrations. Of course, the downstream cutting mechanism 4 can be used alone for cutting the optical fiber protection tube.

In order to effectively control the cutting depth and avoid damage to the optical fiber, the knife holder 2 is provided with a cutting limit protection mechanism 7 for controlling the cutting depth of the first blade 52 . The cutting limit protection mechanism 7 includes a chute 71 arranged on one side of the tool holder 2, a limit protrusion 72 arranged in the chute 71, and a fixing bolt 73 for fixing the limit protrusion 72. The limiting protrusion 72 can slide up and down along the sliding groove 71 and is fixed by a fixing bolt 73 . Wherein, the distance between the limiting protrusion 72 and the cutting edge of the first blade 52 is less than or equal to the thickness of the optical fiber protection tube, so as to meet the cutting requirements of optical fiber protection tubes with different thicknesses.

Working process: When rotary cutting is required, manually press the bracket 1 and one end of the tool holder 2, so that the bracket 1 and the tool holder 2 rotate around the rotating shaft 3 to open the limiting groove 511, and move the first limiting part 51 along the The chute 11 on the bracket 1 slides to the cutting position and is fixed by the locking screw 12. Put the piece 8 to be cut in the matching limit groove 511, release your hand, and the piece 8 to be cut is clamped in the limit groove Between 511 and the first blade 52, the first blade 52 is stretched by the return spring 6 to generate a reverse force acting on the piece to be cut 8, press the knife rest 2 downwards to insert the first blade 52 into the piece to be cut 8, and then Rotate the cutting tool one round with the piece 8 to be cut as the axis to scratch the optical fiber protection tube of the piece 8 to be cut, and then break off the scratched part by hand. Inwardly inclined, it is not easy to scratch the optical fiber, no frequent adjustment is required, and there are few operating steps; when down-cutting is required, place the piece 8 to be cut horizontally on the second limiter 42 and apply force downward to insert the second blade 41 into the waiting The cutting part 8 slides the cutting tool as a whole, so that the second blade 41 cuts along the axial direction of the optical fiber protection tube.

Except above-mentioned preferred embodiment, the present invention also has other embodiments, and those skilled in the art can make various changes and deformations according to the present invention, as long as they do not depart from the spirit of the present invention, all should belong to the scope defined in the appended claims of the present invention scope.

Claims (10)

1. The utility model provides an optical fiber protection tube cutting means of OPGW optical cable which characterized in that: the automatic cutting device comprises a support and a knife rest, wherein one end of the support is hinged to one end of the knife rest through a rotating shaft, the other end of the support and the other end of the knife rest can be opened or occluded in a rotating matching mode around the rotating shaft, a sequential cutting mechanism is arranged at the head of the support and the head of the knife rest, a rotary cutting mechanism is arranged between the sequential cutting mechanism and the rotating shaft, a return spring is connected between the support and the knife rest, when the support and the knife rest are occluded, the return spring keeps the original state, and when the support and the knife rest are opened, the return spring is stretched to generate a reverse force to act on the rotary cutting mechanism and the sequential cutting mechanism.

2. The tool for cutting an optical fiber protection tube of an OPGW optical cable according to claim 1, characterized in that: the rotary cutting mechanism comprises a first limiting part arranged on the support and a first blade arranged on the tool rest, and the first limiting part and the first blade are matched to perform radial rotary cutting on the piece to be cut.

3. The tool for cutting an optical fiber protection tube of an OPGW optical cable according to claim 2, characterized in that: the sequential cutting mechanism comprises a second blade arranged on the support and a second limiting part arranged on the tool rest, and the second blade and the second limiting part are matched to perform axial sequential cutting on the workpiece to be cut.

4. The tool for cutting the optical fiber protection tube of the OPGW optical cable according to claim 3, wherein: the first blade and the second blade are arranged vertically, and high-density fine teeth are arranged on the cutting edges of the first blade and the second blade.

5. The tool for cutting an optical fiber protection tube of an OPGW optical cable according to claim 4, wherein: the support is provided with a sliding groove, and the first limiting part is slidably arranged in the sliding groove and fixed through a locking screw.

6. The tool for cutting an optical fiber protection tube of an OPGW optical cable according to claim 5, wherein: the top of the first limiting part is provided with a plurality of limiting grooves with different apertures side by side, the bottom of the first limiting part is provided with a sliding block, and the sliding block is slidably arranged in the sliding groove.

7. The tool for cutting an optical fiber protection tube of an OPGW optical cable according to claim 6, wherein: the limiting groove is an arc-shaped groove, and the plane of the limiting groove is vertically crossed with the cutting plane of the first blade.

8. The tool for cutting the optical fiber protection tube of the OPGW optical cable according to claim 1, wherein: and the cutter frame is provided with a cutting limiting protection mechanism for controlling the cutting depth of the first blade.

9. The tool for cutting the optical fiber protection tube of the OPGW optical cable according to claim 8, wherein: the cutting limit protection mechanism comprises a sliding groove arranged on one side of the cutter rest, a limit lug arranged in the sliding groove and a fixing bolt used for fixing the limit lug, and the limit lug can slide up and down along the sliding groove and is fixed through the fixing bolt.

10. The tool for cutting an optical fiber protection tube of an OPGW optical cable according to claim 9, wherein: the distance between the limiting lug and the cutting edge of the first blade is smaller than or equal to the thickness of the optical fiber protection tube.

Images