Electric wire and cable girdling cutter and application method

Abstract

The invention relates to an electric wire and cable girdling cutter and an application method. The cutter comprises a first pressing rod, a second pressing rod, a connecting rotating shaft, a first arc-shaped cutter, a second arc-shaped cutter and a limiting adjusting structure. One end of the first pressing rod and one end of the second pressing rod are rotatably connected through a connecting rotating shaft, the first arc-shaped cutter is fixed to the first pressing rod, the cutting edge of the first arc-shaped cutter faces the second pressing rod, the second arc-shaped cutter is fixed to the second pressing rod, and the second arc-shaped cutter and the first arc-shaped cutter are symmetrically arranged; the limiting adjusting structure comprises an arc-shaped guide rail and a limiting rod, the arc-shaped guide rail is arranged between the first pressing rod and the second pressing rod, fixing holes are formed in the arc-shaped guide rail in an array mode, and the limiting rod is installed in the fixing holes. Compared with the prior art, the opening of the cutter can be adjusted, and the cutter has the advantages of flexible adjustment, wide application range and the like.

Description

Technical Field

[0001] The invention relates to the field of sampling devices, in particular to a wire and cable ring cutting tool and an application method. Background Art

[0002] Wires and cables can be used to transmit electrical energy, transfer information, and realize electromagnetic energy conversion. They are widely used in various fields of modern industry. At present, the quality of wires and cables on the market varies greatly, so a large number of test experiments are needed to test the performance and quality of wires and cables. The first step in the test experiment is to prepare wire and cable test samples, which requires testers to be able to cut and sample wires and cables accurately and quickly. For a long time, testers have used tools such as saw blades or utility knives in cable ring cutting, which are not only time-consuming and labor-intensive, but also have certain safety hazards.

[0003] At present, there are cutters for cutting cables on the market. Although they have improved the cutting speed of cables to a certain extent, the invention patent CN110450205A discloses a ring cutting device and a cutting system, which inserts the cable into the operating port; then adjusts the position of the clamping assembly on the support frame so that the clamping assembly is close to the pressure-bearing part, and clamps the cable through the clamping end of the clamping assembly and the pressure-bearing end of the pressure-bearing part, so that the cable is stabilized on the support frame, and there is no need for operators to hold and fix the cable. In this way, the output of manpower is greatly reduced, making the cable sampling process time-saving and labor-saving.

[0004] However, when switching the cutting cable size in the above-mentioned prior art, the cutting diameter adjustment process of the cutting structure is cumbersome, the cutting size needs to be adjusted before cutting can be performed, and the operation and cutting are not flexible enough. Summary of the invention

[0005] The purpose of the present invention is to provide a wire and cable ring cutting tool and application method in order to overcome the defects of the above-mentioned prior art that when switching the cutting cable size, the cutting diameter adjustment process of the cutting structure is cumbersome, the cutting size needs to be adjusted before cutting can be carried out, and the operation and cutting are not flexible enough.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The present invention provides a wire and cable circular cutting tool, comprising a first pressure rod, a second pressure rod, a connecting shaft, a first arc-shaped knife, a second arc-shaped knife and a limit adjustment structure;

[0008] One end of the first pressure rod and the second pressure rod are rotatably connected via a connecting shaft, the first arc knife is fixed on the first pressure rod, the cutting edge of the first arc knife faces the second pressure rod, the second arc knife is fixed on the second pressure rod and is symmetrically arranged with the first arc knife; the limit adjustment structure includes an arc guide rail and a limit rod, the arc guide rail is arranged between the first pressure rod and the second pressure rod, the arc guide rail is provided with an array of fixing holes, and the limit rod is installed in the fixing holes.

[0009] Preferably, one end of the arc-shaped guide rail is fixed on the second pressure rod, and the other end passes through the first pressure rod, and the center of the arc-shaped guide rail coincides with the connecting shaft.

[0010] Preferably, the fixing hole on the arc-shaped guide rail is a threaded hole, the limiting rod is a threaded rod, and the limiting rod is threadedly connected to the fixing hole.

[0011] Preferably, a return spring is provided between the first pressure rod and the second pressure rod, one end of the return spring is fixed on the inner side of the first pressure rod, and the other end is fixed on the inner side of the second pressure rod, and the return spring is located on the side of the arc guide rail close to the connecting shaft.

[0012] Preferably, a shock absorbing layer is provided on the side of the limiting rod contacting the first pressure rod, and the material of the shock absorbing layer is rubber.

[0013] Preferably, the front ends of the first pressure rod and the second pressure rod are provided with corresponding mounting holes, and the connecting shaft comprises a snap screw and a snap nut, and the snap screw passes through the mounting hole and is threadedly connected to the snap nut.

[0014] Preferably, the first pressure rod is provided with a first limiting ring, which is fixed to one end of the first pressure rod away from the connecting shaft and to a side of the second pressure rod, and the second pressure rod is provided with a second limiting ring, which is symmetrically arranged with the first limiting ring.

[0015] Preferably, the first limiting ring and the second limiting ring are both semicircular structures, and the first limiting ring and the second limiting ring are respectively sleeved with rubber sleeves.

[0016] Preferably, a friction layer is sleeved on the outer sides of the first pressure rod and the second pressure rod. The material of the friction layer is rubber, and the outer surface of the friction layer is provided with protrusions arranged in an array.

[0017] The present invention also provides an application method of a wire and cable ring cutting tool, comprising the following steps:

[0018] According to the diameter of the cable to be cut, install the limit rod into the corresponding fixing hole;

[0019] The annular cutting area formed by the first arc-shaped knife and the second arc-shaped knife is opened by the first pressing rod and the second pressing rod, and the knife is moved so that the cable is located in the annular cutting area;

[0020] The diameter of the annular cutting area is reduced by the first pressure rod and the second pressure rod, and when the first arc-shaped knife and the second arc-shaped knife contact the cable, the knife is rotated to cut the cable;

[0021] Until the first pressure rod contacts the limiting rod, the cable cutting is completed.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] (1) In this solution, according to the diameter of the cable to be cut, the limit rod is installed in a suitable fixing hole, the first arc knife and the second arc knife are opened by the first pressure rod and the second pressure rod, the cable to be cut is moved between the first arc knife and the second arc knife, the first arc knife and the second arc knife are closed, the cable sheath is pressurized, and the cutting tool is rotated at the same time until the first pressure rod or the second pressure rod hits the limit rod, thereby completing the circular cutting of the cable sheath.

[0024] By setting a fixing hole corresponding to the distance between the first arc-shaped knife and the second arc-shaped knife on the arc-shaped guide rail, and installing the limit rod in the fixing hole, when the first pressure rod or the second pressure rod contacts the limit rod, that is, the distance between the first arc-shaped knife and the second arc-shaped knife reaches the cutting depth of the cable, while limiting the cutting of the knife, it plays a positioning role to ensure the cutting depth and cutting effect of the blade. The knife has a simple structure and can be flexibly adjusted according to the cutting diameter of the cable to be cut. It is flexible to use and has high cutting quality.

[0025] (2) After the first curved knife and the second curved knife are used to cut the outer sheath of the cable, the reset spring can assist the staff to open the first curved knife and the second curved knife to facilitate the removal of the cable after cutting. The limit rod is adjusted to protect the cable to be cut, thereby improving the sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the cutter provided by the present invention when cutting a cable sheath;

[0027] Figure 2 A schematic diagram of the structure of the cutter provided by the present invention when cutting a cable;

[0028] In the figure: 1. first pressure rod, 2. second pressure rod, 3. connecting shaft, 4. first arc-shaped knife, 5. second arc-shaped knife, 6. limit adjustment structure, 7. reset spring, 8. first limit ring, 9. second limit ring, 10. rubber sleeve, 31. snap screw, 32. snap nut, 61. arc guide rail, 62. limit rod, 63. fixing hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] Example 1

[0036] like Figure 1As shown, this embodiment provides a wire and cable ring cutting tool, including a first pressure rod 1, a second pressure rod 2, a connecting shaft 3, a first arc-shaped knife 4, a second arc-shaped knife 5 and a limit adjustment structure 6;

[0037] One end of the first pressure rod 1 and the second pressure rod 2 are rotatably connected via a connecting shaft 3, the first arc knife 4 is fixed on the first pressure rod 1, the cutting edge of the first arc knife 4 faces the second pressure rod 2, the second arc knife 5 is fixed on the second pressure rod 2, and is symmetrically arranged with the first arc knife 4; the limit adjustment structure 6 includes an arc guide rail 61 and a limit rod 62, the arc guide rail 61 is arranged between the first pressure rod 1 and the second pressure rod 2, and an array of fixing holes 63 are arranged on the arc guide rail 61, and the limit rod 62 is installed in the fixing hole 63.

[0038] Working principle: According to the diameter of the cable to be cut, the limit rod 62 is installed in the appropriate fixing hole 63, the first arc knife 4 and the second arc knife 5 are opened by the first pressure rod 1 and the second pressure rod 2, the cable to be cut is moved between the first arc knife 4 and the second arc knife 5, the first arc knife 4 and the second arc knife 5 are closed, the cable sheath is pressurized, and the cutting tool is rotated at the same time until the first pressure rod 1 or the second pressure rod 2 hits the limit rod 62, and the circular cutting of the cable sheath is completed.

[0039] By setting a fixing hole 63 corresponding to the distance between the first arc-shaped knife 4 and the second arc-shaped knife 5 on the arc-shaped guide rail 61, and installing the limit rod 62 in the fixing hole 63, when the first pressure rod 1 or the second pressure rod 2 contacts the limit rod 62, that is, the distance between the first arc-shaped knife 4 and the second arc-shaped knife 5 reaches the cutting depth of the cable, while limiting the cutting of the knife, it plays a positioning role to ensure the cutting depth and cutting effect of the blade. The knife has a simple structure and can be flexibly adjusted according to the cutting diameter of the cable to be cut. It is flexible to use and has high cutting quality.

[0040] In a preferred embodiment, one end of the arc guide rail 61 is fixed on the second pressure rod 2, and the other end passes through the first pressure rod 1, and the center of the arc guide rail 61 coincides with the connecting shaft 3. The fixing hole 63 on the arc guide rail 61 is a threaded hole, and the limiting rod 62 is a threaded rod, and the limiting rod 62 is threadedly connected to the fixing hole 63.

[0041] It can be understood that one end of the arc guide rail 61 can be fixed on the first pressure rod 1 or the second pressure rod 2, and the other end passes through the guide hole set on the corresponding second pressure rod 2 or the first pressure rod 1. The role and adjustment method are also the same, so a more specific fixing method is not required.

[0042] In a preferred embodiment, a return spring 7 is provided between the first pressure rod 1 and the second pressure rod 2, one end of the return spring 7 is fixed on the inner side of the first pressure rod 1, and the other end is fixed on the inner side of the second pressure rod 2. The return spring is located on the side of the arc guide rail 61 close to the connecting shaft 3.

[0043] After the first curved knife and the second curved knife are used to cut the cable sheath, the reset spring can assist the staff to open the first curved knife and the second curved knife to facilitate the removal of the cable after cutting. The cable to be cut can be protected by adjusting the limit rod, thereby improving the sampling efficiency.

[0044] Specifically, a shock-absorbing layer is provided on the side of the limiting rod 62 contacting the first pressure rod 1. The shock-absorbing layer is made of rubber, which can reduce the damage caused by structural collision when the pressure rod contacts the limiting rod 62, improve the safety of the device, and play a certain protective role on the pressure rod and the limiting rod.

[0045] The front ends of the first pressure rod 1 and the second pressure rod 2 are provided with corresponding mounting holes, and the connecting shaft 3 includes a snap screw 31 and a snap nut 32 . The snap screw 31 passes through the mounting hole and is threadedly connected to the snap nut 32 .

[0046] Preferred implementation mode, as Figure 2 As shown, the first pressure rod 1 is provided with a first limiting ring 8, which is fixed to one end of the first pressure rod 1 away from the connecting shaft 3 and away from the side of the second pressure rod 2, and the second pressure rod 2 is provided with a second limiting ring 9, which is symmetrically arranged with the first limiting ring 8.

[0047] Specifically, the first limiting ring 8 and the second limiting ring 9 are both semicircular structures, and the first limiting ring 8 and the second limiting ring 9 are respectively sleeved with a rubber sleeve 10. The outer sides of the first pressure rod 1 and the second pressure rod 2 are sleeved with a friction layer, the material of the friction layer is rubber, and the outer surface of the friction layer is provided with array-arranged protrusions.

[0048] By setting a limit ring on the pressure rod, the hand is fixed, which makes it easier to hold and exert force on the tool. The protrusion set on the pressure rod increases the friction with the operator's palm, making it easier for the staff to hold and use the tool.

[0049] This embodiment also provides an application method of a wire and cable ring cutting tool, comprising the following steps:

[0050] According to the diameter of the cable to be cut, the limiting rod 62 is installed into the corresponding fixing hole 63;

[0051] The annular cutting area formed by the first arc-shaped knife 4 and the second arc-shaped knife 5 is opened by the first pressure rod 1 and the second pressure rod 2, and the knife is moved so that the cable is located in the annular cutting area;

[0052] The diameter of the annular cutting area is reduced by the first pressure rod 1 and the second pressure rod 2, and when the first arc knife 4 and the second arc knife 5 contact the cable, the knife is rotated to cut the cable;

[0053] Until the first pressure rod 1 contacts the limiting rod 62, the cable cutting is completed.

[0054] During the specific implementation process, the operator puts his hand through the rubber sleeve, holds the pressure rod, supports the cable, then places the blade of the inner-edge circular cutting knife perpendicular to the cable, and moves the cable sample to the part of the cable that needs to be circularly cut. The right hand applies appropriate force to make a circular motion along the cable, and the circular cutting sampling of the cable is completed. This circular cutting sampling process effectively solves the problem of poor flatness of the incision when using traditional methods.

[0055] In addition, by setting a limit adjustment structure, it is ensured that it will not cut the internal wire. During the ring cutting process, the opening and closing size of the blade can be freely adjusted by controlling the pressure rod, thereby realizing the ring cutting sampling of cables of different sizes, such as the cable sheath and the insulation layer of the outer layer of the cable line, and cooperating with the limit adjustment structure to avoid damage to the inside of the cable and improve the safety of cutting, thereby improving the application range of the cable ring cutting tool and solving the problem that the opening of the cutter cannot be adjusted and the application range is small.

[0056] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A wire and cable ring cutting tool, It is characterized in that It comprises a first pressure rod (1), a second pressure rod (2), a connecting shaft (3), a first arc-shaped knife (4), a second arc-shaped knife (5) and a limit adjustment structure (6); One end of the first pressure rod (1) and the second pressure rod (2) are rotatably connected via a connecting shaft (3); the first arc-shaped knife (4) is fixed on the first pressure rod (1), the cutting edge of the first arc-shaped knife (4) faces the second pressure rod (2); the second arc-shaped knife (5) is fixed on the second pressure rod (2) and is symmetrically arranged with the first arc-shaped knife (4); the limit adjustment structure (6) comprises an arc-shaped guide rail (61) and a limit rod (62); the arc-shaped guide rail (61) is arranged between the first pressure rod (1) and the second pressure rod (2); a fixing hole (63) is arranged in an array on the arc-shaped guide rail (61), and the limit rod (62) is installed in the fixing hole (63).

2. A wire and cable ring cutting tool according to claim 1, It is characterized in that One end of the arc-shaped guide rail (61) is fixed on the second pressure rod (2), and the other end passes through the first pressure rod (1); the center of the arc-shaped guide rail (61) coincides with the connecting shaft (3).

3. A wire and cable ring cutting tool according to claim 1, It is characterized in that The fixing hole (63) on the arc-shaped guide rail (61) is a threaded hole, the limiting rod (62) is a threaded rod, and the limiting rod (62) is threadedly connected to the fixing hole (63).

4. A wire and cable ring cutting tool according to claim 1, It is characterized in that A return spring (7) is provided between the first pressure rod (1) and the second pressure rod (2), one end of the return spring (7) is fixed on the inner side of the first pressure rod (1), and the other end is fixed on the inner side of the second pressure rod (2), and the return spring is located on a side of the arc guide rail (61) close to the connecting shaft (3).

5. A wire and cable ring cutting tool according to claim 1, It is characterized in that A shock absorbing layer is provided on the side of the limiting rod (62) contacting the first pressure rod (1), and the material of the shock absorbing layer is rubber.

6. A wire and cable ring cutting tool according to claim 1, It is characterized in that The front ends of the first pressure rod (1) and the second pressure rod (2) are provided with corresponding mounting holes, and the connecting shaft (3) comprises a snap screw (31) and a snap nut (32), wherein the snap screw (31) passes through the mounting hole and is threadedly connected to the snap nut (32).

7. A wire and cable ring cutting tool according to claim 1, It is characterized in that The first pressure rod (1) is provided with a first limiting ring (8), the first limiting ring (8) being fixed to one end of the first pressure rod (1) away from the connecting shaft (3) and away from the side of the second pressure rod (2), and the second pressure rod (2) is provided with a second limiting ring (9), the second limiting ring (9) being symmetrically arranged with the first limiting ring (8).

8. A wire and cable ring cutting tool according to claim 7, It is characterized in that The first limiting ring (8) and the second limiting ring (9) are both semicircular structures, and the first limiting ring (8) and the second limiting ring (9) are respectively sleeved with a rubber sleeve (10).

9. A wire and cable ring cutting tool according to claim 1, It is characterized in that The outer sides of the first pressure rod (1) and the second pressure rod (2) are covered with a friction layer, the material of the friction layer is rubber, and the outer surface of the friction layer is provided with protrusions arranged in an array.

10. An application method of a wire and cable ring cutting tool according to any one of claims 1 to 9, It is characterized in that The following steps are involved: According to the diameter of the cable to be cut, the limiting rod (62) is installed in the corresponding fixing hole (63); The annular cutting area formed by the first arc-shaped knife (4) and the second arc-shaped knife (5) is opened by means of the first pressure rod (1) and the second pressure rod (2), and the knife is moved so that the cable is located in the annular cutting area; The diameter of the annular cutting area is reduced by the first pressing rod (1) and the second pressing rod (2), and when the first arc-shaped knife (4) and the second arc-shaped knife (5) contact the cable, the knives are rotated to cut the cable; The cable cutting is completed until the first pressure rod (1) contacts the limiting rod (62).

Images