Cutting tool for heat-shrinkable tubing

Abstract

The utility model discloses a heat-shrinkable sleeve cutting tool which comprises a base body, a containing groove is vertically formed in the base body and connected with the surface of the bottom end of the base body in a penetrating mode, a mounting block with a shaft rod at the top is arranged below the base body, and the shaft rod can slide up and down along the containing groove. An elastic piece is arranged between the top of the shaft rod and the inner top wall of the accommodating groove; an adjusting gap is formed between a mounting block of which the bottom is connected with an annular tool bit and the lower surface of the seat body; a strip-shaped through hole is formed in the surface of the side wall of the base body and is symmetrical about the shaft rod, the strip-shaped through hole is in through connection with the containing groove through a strip-shaped through groove, a fixing rod connected with the shaft rod is arranged in the strip-shaped through groove, and when the fixing rod is located at the lower end of the strip-shaped through hole, the elastic piece is in a compressed state. On the basis of realizing the elastic contact between the cutter head and the needle body, the cutter head is prevented from deviating, the position precision of the cutter head is improved, and the cutting precision is ensured.

Description

Technical Field

[0001] The utility model relates to a heat shrinkable tube cutting tool, belonging to the technical field of heat shrinkable tube cutting. Background Art

[0002] Heat shrink tubing is a specialized polyolefin-based heat-shrink tubing with advantages such as high-temperature shrinkage, flexibility, flame retardancy, and insulation and corrosion resistance. It is widely used for insulation protection of various wiring harnesses, solder joints, and inductors, as well as for rust and corrosion protection of metal tubes and rods. Common heat shrink tubing includes PVC, PET, and adhesive-containing heat shrink tubing. In existing technology, heat shrink tubing is applied to the entire outer wall of the needle to increase its toughness and prevent breakage.

[0003] In the actual production process, it is necessary to cut off the excess heat shrink tubing on the needle body and use a cutting mechanism to cut the heat shrink tubing. In the existing technology, the cutting knife can be pressed on the surface of the needle body, and the needle body with the heat shrink tubing can be driven to rotate, thereby cutting off the excess heat shrink tubing. In order to avoid hard contact between the cutting head and the needle body, the cutting head is connected to the mounting part of the cutting mechanism through an elastic part. However, during use, the cutting head is prone to deviation, resulting in a change in the cutting position, causing the length of the heat shrink tubing to be inconsistent with the preset length, and the cutting accuracy is poor. Summary of the Invention

[0004] The purpose of the utility model is to provide a heat shrink tubing cutting tool, which avoids the deviation of the cutter head on the basis of realizing elastic contact between the cutter head and the needle body, improves the position accuracy of the cutter head and ensures the cutting accuracy.

[0005] To achieve the above-mentioned object, the technical solution adopted by the present invention is: a heat shrink tubing cutting tool, comprising: a base body, a receiving groove vertically provided inside the base body, and the receiving groove is connected to the bottom surface of the base body, a mounting block with a shaft at the top is provided below the base body, the shaft can slide up and down along the receiving groove, an elastic member is provided between the top of the shaft and the inner top wall of the receiving groove, and an adjustable gap is formed between the mounting block with an annular cutter head connected to the bottom and the lower surface of the base body;

[0006] A strip through hole is provided on the side wall surface of the seat body and is symmetrical about the shaft rod. The strip through hole is connected to the accommodating groove through a strip through groove. A fixing rod connected to the shaft rod is provided inside the strip through groove. When the fixing rod is located at the lower end of the strip through hole, the elastic member is in a compressed state.

[0007] The further improved scheme in the above technical scheme is as follows:

[0008] 1. In the above solution, a sleeve is provided between the inner wall of the receiving groove and the circumferential outer wall of the shaft rod, and the shaft rod can slide up and down along the inner wall of the sleeve.

[0009] 2. In the above solution, the length of the strip-shaped through hole is greater than the length of the adjustment gap.

[0010] 3. In the above solution, the top of the shaft has a second guide rod, and the elastic member is sleeved on the circumferential outer wall of the second guide rod.

[0011] 4. In the above solution, the diameter of the shaft rod is 2 to 4 times the diameter of the second guide rod.

[0012] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0013] The utility model discloses a heat shrink tubing cutting tool, wherein the interior of the base body is provided with a receiving groove in a vertical manner, and the receiving groove is connected with the bottom surface of the base body through the base body, and a mounting block with a shaft rod on the top is provided below the base body, and the shaft rod can slide up and down along the receiving groove, and an elastic member is provided between the top of the shaft rod and the top wall of the receiving groove, and an adjustment gap is provided between the base body and the mounting block, and by providing a mounting block below the base body, and the mounting block is elastically connected to the base body through the shaft rod, and an adjustment gap is provided between the mounting block and the base body, elastic contact between the cutter head and the needle body can be achieved, thereby avoiding the situation where the cutter head and the needle body are damaged due to hard contact; further, The two side wall surfaces of the seat body are provided with strip through holes in the vertical direction. The strip through holes and the accommodating groove are connected through the strip through groove. The two strip through grooves symmetrically distributed about the shaft rod are arranged parallel to the axial direction of the annular cutter head. A fixing rod connected to the shaft rod is arranged inside the strip through groove. When the shaft rod slides up and down in the accommodating groove, the fixing rod can move up and down along the strip through groove on the basis of achieving elastic contact between the cutter head and the needle body, which is beneficial to improving the positioning accuracy of the mounting block, avoiding the situation where the shaft rod rotates during the up and down movement, causing the mounting block to shift and the cutter head to shift, improving the positioning accuracy of the annular cutter head, and ensuring the cutting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attachment Figure 1 This is a schematic diagram of the overall structure of the heat shrink tubing cutting tool of the utility model;

[0015] Attachment Figure 2 This is a cross-sectional perspective diagram of the heat shrink tubing cutting tool of the present invention;

[0016] Attachment Figure 3 For attachment Figure 2 Enlarged schematic diagram of point A in the middle.

[0017] In the above figures: 1. annular cutter head; 2. seat body; 201. accommodating groove; 3. mounting block; 4. shaft rod; 401. second guide rod; 5. shaft sleeve; 6. elastic member; 7. fixing rod; 8. strip-shaped through hole; 9. strip-shaped through groove. DETAILED DESCRIPTION

[0018] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0019] Example 1: A heat shrink tubing cutting tool, comprising: a base body 2, wherein a receiving groove 201 is vertically provided inside the base body 2, and the receiving groove 201 is connected to the bottom surface of the base body 2; a mounting block 3 with a shaft 4 at the top is provided below the base body 2, and the shaft 4 can slide up and down along the receiving groove 201; an elastic member 6 is provided between the top of the shaft 4 and the inner top wall of the receiving groove 201; an adjustable gap is formed between the mounting block 3 with the annular cutter head 1 connected to the bottom and the lower surface of the base body 2;

[0020] When in use, the annular cutter head is pressed into contact with the heat shrink tubing on the surface of the needle body, thereby driving the mounting block close to the seat body, and the shaft rod moves upward along the inner wall of the shaft sleeve, while driving the two fixing rods to slide along the inner wall of the strip-shaped through groove, so that the elastic member between the shaft rod and the inner wall of the accommodating groove is compressed, thereby preventing the shaft rod from deflecting during the upward movement;

[0021] A strip through hole 8 is provided on the side wall surface of the seat body 2 and symmetrically about the shaft rod 4. The strip through hole 8 is connected to the accommodating groove 201 via a strip through groove 9. A fixing rod 7 connected to the shaft rod 4 is provided inside the strip through groove 9. When the fixing rod 7 is located at the lower end of the strip through hole 8, the elastic member 6 is in a compressed state.

[0022] After the cutting is completed, the annular cutter head separates from the heat shrink tubing and loses the squeeze on the mounting block. Under the elastic force of the elastic member, the shaft rod is pushed downward, and the two fixed rods are driven to move downward along the strip groove, thereby avoiding the position deviation of the annular cutter head, improving the position accuracy of the annular cutter head, and ensuring the consistency of the position of the annular cutter head during multiple cutting processes.

[0023] A shaft sleeve 5 is provided between the inner wall of the accommodating groove 201 and the circumferential outer wall of the shaft rod 4 , and the shaft rod 4 can slide up and down along the inner wall of the shaft sleeve 5 .

[0024] The top of the shaft 4 has a second guide rod 401 , and the elastic member 6 is sleeved on the circumferential outer wall of the second guide rod 401 .

[0025] The diameter of the shaft rod 4 is 2.5 times the diameter of the second guide rod 401 .

[0026] Example 2: A heat shrink tubing cutting tool, comprising: a base body 2, wherein a receiving groove 201 is vertically provided inside the base body 2, and the receiving groove 201 is connected to the bottom surface of the base body 2; a mounting block 3 with a shaft 4 at the top is provided below the base body 2, and the shaft 4 can slide up and down along the receiving groove 201; an elastic member 6 is provided between the top of the shaft 4 and the inner top wall of the receiving groove 201; an adjustable gap is formed between the mounting block 3 with the annular cutter head 1 connected to the bottom and the lower surface of the base body 2;

[0027] By arranging a mounting block under the base body, and elastically connecting the mounting block to the base body through the shaft, and providing an adjustable gap between the mounting block and the base body, elastic contact between the cutter head and the needle body can be achieved, thus avoiding the situation where the cutter head and the needle body are in hard contact and thus causing damage to the needle body;

[0028] A strip through hole 8 is provided on the side wall surface of the seat body 2 and symmetrically about the shaft rod 4. The strip through hole 8 is connected to the accommodating groove 201 via a strip through groove 9. A fixing rod 7 connected to the shaft rod 4 is provided inside the strip through groove 9. When the fixing rod 7 is located at the lower end of the strip through hole 8, the elastic member 6 is in a compressed state.

[0029] Furthermore, as the shaft rod slides up and down in the accommodating groove, the fixing rod can move up and down along the strip-shaped through groove on the basis of achieving elastic contact between the cutter head and the needle body, which is beneficial to improving the positioning accuracy of the mounting block and avoiding the situation where the shaft rod rotates during the up and down movement, causing the mounting block to shift and the cutter head to shift, thereby improving the positioning accuracy of the annular cutter head and ensuring cutting accuracy.

[0030] A shaft sleeve 5 is provided between the inner wall of the accommodating groove 201 and the circumferential outer wall of the shaft rod 4 , and the shaft rod 4 can slide up and down along the inner wall of the shaft sleeve 5 .

[0031] The length of the strip-shaped through hole 8 is greater than the length of the adjustment gap.

[0032] The diameter of the shaft rod 4 is 3.5 times the diameter of the second guide rod 401 .

[0033] The two fixing rods 7 are round rods.

[0034] The working principle is as follows: when in use, the annular cutter head presses against the heat shrink tubing on the needle body, thereby driving the mounting block toward the base, causing the shaft to move upward along the inner wall of the sleeve, while simultaneously driving the two fixing rods to slide along the inner wall of the strip-shaped through-slot, compressing the elastic member between the shaft and the inner wall of the accommodating slot, thus preventing the shaft from deflecting during the upward movement;

[0035] After the cutting is completed, the annular cutter head separates from the heat shrink tubing and loses the squeeze on the mounting block. Under the elastic force of the elastic member, the shaft rod is pushed downward, and the two fixed rods are driven to move downward along the strip groove, thereby avoiding the position deviation of the annular cutter head, improving the position accuracy of the annular cutter head, and ensuring the consistency of the position of the annular cutter head during multiple cutting processes.

[0036] When the heat shrink tubing cutting tool is used, a mounting block is provided below the base body, and the mounting block is elastically connected to the base body via a shaft, and an adjustable gap is provided between the mounting block and the base body, thereby achieving elastic contact between the cutter head and the needle body, thereby avoiding damage to the needle body caused by hard contact between the cutter head and the needle body.

[0037] Furthermore, as the shaft rod slides up and down in the accommodating groove, the fixing rod can move up and down along the strip-shaped through groove on the basis of achieving elastic contact between the cutter head and the needle body, which is beneficial to improving the positioning accuracy of the mounting block and avoiding the situation where the shaft rod rotates during the up and down movement, causing the mounting block to shift and the cutter head to shift, thereby improving the positioning accuracy of the annular cutter head and ensuring cutting accuracy.

[0038] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A heat shrink tubing cutting tool, comprising: A base body (2), characterized in that: a receiving groove (201) is vertically provided inside the base body (2), and the receiving groove (201) is connected to the bottom surface of the base body (2); a mounting block (3) with a shaft (4) at the top is provided below the base body (2); the shaft (4) can slide up and down along the receiving groove (201); an elastic member (6) is provided between the top of the shaft (4) and the inner top wall of the receiving groove (201); and an adjustable gap is provided between the mounting block (3) with the annular cutter head (1) connected to the bottom and the lower surface of the base body (2); A strip through hole (8) is provided on the side wall surface of the seat body (2) and is symmetrically provided with respect to the shaft rod (4). The strip through hole (8) and the accommodating groove (201) are connected via a strip through groove (9). A fixing rod (7) connected to the shaft rod (4) is provided inside the strip through groove (9). When the fixing rod (7) is located at the lower end of the strip through hole (8), the elastic member (6) is in a compressed state.

2. The heat shrink tubing cutting tool according to claim 1, characterized in that: A shaft sleeve (5) is provided between the inner wall of the accommodating groove (201) and the circumferential outer wall of the shaft rod (4), and the shaft rod (4) is capable of sliding up and down along the inner wall of the shaft sleeve (5).

3. The heat shrink tubing cutting tool according to claim 1, characterized in that: The length of the strip-shaped through hole (8) is greater than the length of the adjustment gap.

4. The heat shrink tubing cutting tool according to claim 1, characterized in that: The top of the shaft (4) is provided with a second guide rod (401), and the elastic member (6) is sleeved on the circumferential outer wall of the second guide rod (401).

5. The heat shrink tubing cutting tool according to claim 4, characterized in that: The diameter of the shaft rod (4) is 2 to 4 times the diameter of the second guide rod (401).

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