Cutting, limiting and calibrating tool for butt-joint inclined planes of circular sealing rubber strips

Abstract

The utility model belongs to the technical field of transformer maintenance tools, and particularly relates to a circular sealing rubber strip butt-joint inclined plane cutting, limiting and calibrating tool which comprises a limiting mechanism and is characterized in that a plurality of diameter limiting through holes are formed in the limiting mechanism, an inclined groove is further formed in the limiting mechanism, and the diameter limiting through holes are obliquely cut by the inclined groove to form bonding inclined planes. The sealing rubber strip cutting device has the advantages that the requirement for the personal technical ability of operators is greatly reduced, the limiting device is used for fixing, the inclination angle and the inclination length are accurate, the cutting face is smooth, and the sealing rubber strip is not prone to rolling in the manufacturing process; when the other end is cut, the sizes of the rubber rings can be consistent, and meanwhile, rubber rings of multiple specifications can be manufactured; the device can comply with the natural torsion of the adhesive tape, accurately controls and realizes the qualified circular sealing ring with no torsion of the bonding port and upper and lower crimping, saves time and labor in manufacturing, and is controllable in quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer maintenance tools, in particular to a circular sealing strip butt chamfer cutting limit calibration tool. Background Art

[0002] During transformer maintenance, a large number of circular sealing strips of various sizes and specifications will be produced on site, especially the rubber rings of circular sealing strips such as nitrile rubber and fluororubber. When cutting the butt end faces, there is often no limiting device, and it is difficult to accurately control the inclination angle and inclination length of the two end faces to be bonded, resulting in random cutting, uneven bonding surface, inconsistent inclination angle, and inconsistent inclination length. During production, the rubber ring round strip is easy to roll and cut multiple times, resulting in uneven cutting surface of the bevel; when cutting the other end, it is also difficult to control the length of the cut bevel; in addition, there are many specifications of rubber rings, and the diameters are different, which is difficult to grasp; it is time-consuming and laborious to produce, and the two cutting butt bevels cannot accurately control the 180-degree back-to-back bonding surface, and the quality is uncontrollable. The produced bonding sealing ring cannot form a qualified circular sealing ring with no torque bonding interface crimped up and down, resulting in repeated production and waste. Summary of the invention

[0003] In view of the problems of the above-mentioned prior art, the utility model proposes a circular sealing strip butt bevel cutting limit calibration tool, and its technical solution is: it includes a limit mechanism, which is characterized in that a plurality of diameter limiting through holes are arranged in the limit mechanism, and an inclined groove is also arranged on the limit mechanism, and the inclined groove bevels the diameter limiting through hole to form a bonding inclined surface.

[0004] As a preferred solution, it is characterized in that a positive target is arranged just above the diameter-limiting through hole.

[0005] As a preferred solution, it is characterized in that chamfers are provided at the inlet and the outlet of the diameter-limiting through hole.

[0006] As a preferred solution, it is characterized in that the diameter of the diameter-limiting through hole is 5-15 mm.

[0007] As a preferred solution, it is characterized in that the inclined angle of the inclined groove is 21-25 degrees, so that the area of ​​the bonding inclined surface is 2.4-2.8 times the area of ​​the diameter-limiting through hole.

[0008] As a preferred solution, it is characterized in that the width of the inclined groove is 1.5-2.5 mm.

[0009] The beneficial effects of the utility model are:

[0010] This device will greatly reduce the operator's personal technical ability requirements. It can be fixed by a limiting device, with precise tilt angle and tilt length, and a smooth cutting surface, so that the sealing strip is not easy to roll during production. When cutting the other end, the size can also be made consistent, and multiple specifications of rubber rings can be produced at the same time. The natural torque of the rubber strip can be followed, and accurate control can be performed to achieve torque-free bonding interface and qualified round sealing rings with upper and lower crimping, which saves time and effort and has controllable quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] In the figure: 1. limit mechanism; 2. inclined groove; 3. chamfer; 4. positive target; 5. diameter limiting hole; 6. bonding inclined surface. DETAILED DESCRIPTION

[0013] The utility model is further described in detail below based on the accompanying drawings and specific embodiments.

[0014] Example 1

[0015] like Figure 1 The circular sealing strip docking bevel cutting limit calibration tool shown includes a limit mechanism 1, in which ten diameter-limiting through holes 5 are arranged, and an inclined groove 2 is also arranged on the limit mechanism 1. The inclined groove 2 bevels the diameter-limiting through holes 5 to form a bonding bevel 6. The diameter-limiting holes 5 can limit the sealing strip and make it difficult to roll.

[0016] Furthermore, a positive target 4 is arranged just above the diameter-limiting through hole 5. After one end is cut, the other end needs to face the positive target 4 so that the sealing strip can adapt to its natural torque.

[0017] Furthermore, chamfers 3 are provided at the entrance and the exit of the diameter-limiting through hole 5 to prevent the rubber strip from being scratched by the edges when entering.

[0018] Furthermore, the diameter of the diameter-limiting through hole 5 is 5-15 mm, which is suitable for sealing strips of various specifications.

[0019] Furthermore, the inclined angle of the inclined groove 2 is 23.578°, so that the area of ​​the bonding slope 6 is 2.5 times the area of ​​the diameter-limiting through hole 5. The bonding slope 6 makes the section meet the manufacturing requirements and the slope length is the same.

[0020] Furthermore, the width of the inclined groove 2 is 2.0 mm, and the inclined groove 2 limits the tool to ensure the flatness of the cutting surface.

[0021] The above-mentioned tooling is used in the following steps: cut a sealing strip of the required length, insert it into the limiting hole 5 of the corresponding diameter, then press the tool into the inclined groove 2, cut downwards without repeating, and cut it with one knife. The cutting bevel is smooth, and then the other end of the strip is placed in the same limiting hole 5, aligning with the positive target 4 to determine the cutting angle, repeatedly pressing the tool into the inclined groove 2, and obtaining a sealing strip with flat ends, the same inclination angle, and the same inclination length, and bonding the two inclined surfaces to form a required sealing ring.

Claims

1. A tool for limiting and calibrating the butt bevel cutting of a circular sealing strip, comprising a limiting mechanism (1), characterized in that: A plurality of diameter limiting through holes (5) are arranged in the limiting mechanism (1), and an inclined groove (2) is also arranged on the limiting mechanism (1), wherein the inclined groove (2) bevels the diameter limiting through holes (5) to form a bonding inclined surface (6).

2. The circular sealing strip butt bevel cutting limit calibration tool according to claim 1 is characterized in that: A positive target (4) is arranged directly above the diameter-limiting through hole (5).

3. The circular sealing strip butt bevel cutting limit calibration tool according to claim 1, characterized in that: Chamfers (3) are provided at both the inlet and the outlet of the diameter-limiting through hole (5).

4. The circular sealing strip butt bevel cutting limit calibration tool according to claim 1, characterized in that: The diameter of the diameter-limiting through hole (5) is 5-15 mm.

5. The circular sealing strip butt bevel cutting limit calibration tool according to claim 1, characterized in that: The inclined angle of the inclined groove (2) is 21-25°, so that the area of ​​the bonding inclined surface (6) is 2.4-2.8 times the area of ​​the diameter-limiting through hole (5).

6. The circular sealing strip butt bevel cutting limit calibration tool according to claim 1, characterized in that: The width of the inclined groove (2) is 1.5-2.5 mm.

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