Cable material thermal deformation test cutter

Abstract

The utility model discloses a cable material thermal deformation test cutter, which comprises a cutter body, the cutter body is arranged on a workbench of a sheet punching machine, a marking device is arranged at the upper end of the cutter body, the marking device comprises a fixed seat, a spring and a marking needle, and the marking device is used for marking a test point at the center of a sample during cutting. According to the utility model, the cutter body comprises the cutting part, the stress part and the lap joint part, the stress part is connected with the cutting part at the bottom and the lap joint part at the top, the cutting part is provided with the square cutting notch, and a to-be-tested sample placed on a workbench can be rapidly cut into specific sizes through a punching machine; the marking device is arranged at the upper end of the cutter body, the pressurizing head and the fixing base are elastically connected through the spring, cutting is completed, meanwhile, the lower pressing head is pressed down, a marking needle rapidly marks the center position of a cut sample, and experiment steps and test errors are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of material cutting equipment, in particular to a cable material thermal deformation testing cutter. Background Art

[0002] Silane cross-linked polyolefin cable material is a special material used to manufacture power cable insulation and sheath. It uses silane cross-linking technology to cross-link and modify polyolefin (usually polyethylene) to improve its performance and durability. Compared with peroxide cross-linking, it has the advantages of simple production equipment, convenient operation, and low overall cost. It has become the leading insulation material for low-voltage cross-linked cables and has been widely used in my country's wire and cable industry.

[0003] Since the material may be exposed to high temperature during the operation of the cable, it is necessary to ensure that the material can maintain stable performance at high temperature without softening, flowing or losing structural stability. Therefore, it is necessary to estimate the deformation of the material in actual use by testing the thermal deformation performance. Currently, when conducting thermal deformation tests, staff are required to manually cut the samples to be tested into specified sizes, place them on a horizontal bracket to locate the pressure point, and then mark them manually. Finally, the weight pressure rod mechanism fixed on the splint is used to pressurize the sample and test the thickness of the pressure point. The operation steps are relatively cumbersome and the test error is large. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a cable material thermal deformation test cutter.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions, including:

[0006] A cutter body, the cutter body is arranged on the workbench of the punching machine, and the cutter body is used to cut the sample placed below;

[0007] A marking device is arranged at the upper end of the cutter body, and the marking device comprises a fixing seat, a spring and a marking needle. The marking device is used to mark a test point at the center of the sample during cutting.

[0008] As a further description of the above technical solution, a square placement cavity is provided in the middle of the cutter body, and the placement cavity is used to place the marking device.

[0009] As a further description of the above technical solution, the cutter body includes a cutting portion, a force-bearing portion and an overlapping portion, and the force-bearing portion connects the cutting portion at the bottom and the overlapping portion at the top.

[0010] As a further description of the above technical solution, the cutting part is provided with a square cutting notch, and the punching machine cuts the sample to be tested through the cutting part.

[0011] As a further description of the above technical solution, the overlapping portion and the edge of the fixing seat abut against each other, and the overlapping portion is used to fix the marking device.

[0012] As a further description of the above technical solution, a limiting portion is provided in the middle of the fixing seat, and the limiting portion is used to limit the vertical movement of the marking needle.

[0013] As a further description of the above technical solution, a limiting hole is provided in the middle of the limiting portion, the marking needle enters into the interior of the cutter body through the limiting hole, and the end of the marking needle is tapered.

[0014] As a further description of the above technical solution, a spring is arranged outside the marking needle, and the spring is used to push the marking needle range to return to an initial position.

[0015] As a further description of the above technical solution, the two ends of the spring are in contact with the fixing seat and the pressure head, and the compression stroke of the spring is greater than or equal to the height of the cutter body.

[0016] As a further description of the above technical solution, a mounting hole is provided in the middle of the pressure head, and a fixing screw is passed through the mounting hole to detachably connect the pressure head and the marking needle.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. The utility model, the cutter body comprises a cutting part, a force-bearing part and an overlapping part, the force-bearing part connects the cutting part at the bottom and the overlapping part at the top, the cutting part is provided with a square cutting notch, and the sample to be tested placed on the workbench can be quickly cut into a specific size by a punching machine;

[0019] 2. In the utility model, a marking device is provided at the upper end of the cutter body, which connects the pressure head and the fixing seat through a spring elasticity. When the cutting is completed, the marking needle can quickly mark the center position of the cut sample by pressing the pressure head, which effectively reduces the experimental steps and test errors.

[0020] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a cable material thermal deformation test cutter of the utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of the middle cutter body and the marking device;

[0023] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle cutter body;

[0024] Figure 4 yes Figure 1 A front view of the marking device;

[0025] Figure 5 yes Figure 1 Cross-sectional view of the marking device.

[0026] Reference numerals:

[0027] 1. Cutter body; 11. Cutting part; 12. Force-bearing part; 13. Overlap part; 14. Placement cavity; 2. Marking device; 21. Fixed seat; 211. Limiting part; 212. Limiting hole; 22. Spring; 23. Marking needle; 24. Pressurizing head; 241. Mounting hole; 25. Fixing screw; 3. Punching machine. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0029] like Figure 1-Figure 5 As shown, in one embodiment, a cable material thermal deformation test cutter includes: a cutter body 1 and a marking device 2. The cutter body 1 is arranged on the workbench of a punching machine 3, and the cutter body 1 cuts the sample placed below through the punching machine 3; and the marking device 2 is arranged on the upper end of the cutter body 1, and is used to mark the central test point of the sample during cutting, so as to facilitate the later placement on the test bench for pressure testing.

[0030] like Figure 1-Figure 5 As shown, in this embodiment, a square placement cavity 14 is provided in the middle of the cutter body 1, and the placement cavity 14 is used to accommodate the marking device 2. The cutter body 1 includes a cutting portion 11, a force-bearing portion 12 and a lap portion 13 from bottom to top. Specifically, the force-bearing portion 12 is in an inverted trapezoidal shape, which connects the cutting portion 11 at the bottom and the lap portion 13 at the top.

[0031] Furthermore, the cutting portion 11 is provided with a square cutting notch, and the punching machine 3 pressurizes the overlapping portion 13, thereby driving the cutting portion 11 to cut the sample to be tested through the force-bearing portion 12; and the overlapping portion 13 abuts against the edge of the fixing seat 21, thereby fixing the marking device 2.

[0032] like Figure 1-Figure 5As shown, in this embodiment, the marking device 2 includes a fixing seat 21, a spring 22 and a marking needle 23. The spring 22 is arranged outside the marking needle 23, and is used to push the marking needle 23 to return to the initial position after the marking needle 23 moves downward. Specifically, both ends of the spring 22 abut against the fixing seat 21 and the pressure head 24, and the compression stroke is greater than or equal to the height of the cutter body 1.

[0033] Furthermore, a limiting portion 211 is provided in the middle of the fixing seat 21, which is used to limit the vertical movement of the marking needle 23 inside the cutter body 1. Specifically, a limiting hole 212 is provided in the middle of the limiting portion 211, and the marking needle 23 enters the inside of the cutter body 1 through the limiting hole 212; and the end of the marking needle 23 is conical, so that when contacting the sample for marking, it will not puncture the sample.

[0034] Furthermore, a mounting hole 241 is provided in the middle of the pressure head 24 , so that the fixing screw 25 can detachably connect the pressure head 24 and the marking needle 23 through the mounting hole 241 .

[0035] Working principle: The cutter body 1 is composed of a cutting part 11, a force-bearing part 12 and an overlapping part 13. The force-bearing part 12 connects the cutting part 11 at the bottom and the overlapping part 13 at the top to ensure the stability of the overall structure. The cutting part 11 is designed with a square cutting notch, which can quickly cut the test sample placed on the workbench into a specific size when passing through the punching machine 3; a marking device 2 is provided at the upper end of the cutter body 1, which elastically connects the pressure head 24 and the fixed seat 21 through a spring 22, and can quickly mark the center position of the cut sample by pressing the pressure head while cutting.

[0036] Through the above technical solution, the present application can effectively reduce the operating steps and test errors when conducting thermal deformation experiments on silane cross-linked polyolefin cable materials, and improve the accuracy and repeatability of the experiments.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cable material thermal deformation test cutter, characterized in that: include: A cutter body (1), the cutter body (1) being arranged on a workbench of a sheet punching machine (3), and the cutter body (1) being used for cutting a sample placed below; A marking device (2) is provided at the upper end of the cutter body (1), the marking device (2) comprising a fixing seat (21), a spring (22) and a marking needle (23), and the marking device (2) is used to mark a test point at the center of a sample during cutting.

2. The cable material thermal deformation test cutter according to claim 1, characterized in that: A square placement cavity (14) is provided in the middle of the cutter body (1), and the placement cavity (14) is used to place the marking device (2).

3. The cable material thermal deformation test cutter according to claim 1, characterized in that: The cutter body (1) comprises a cutting portion (11), a force-bearing portion (12) and an overlapping portion (13); the force-bearing portion (12) connects the cutting portion (11) at the bottom and the overlapping portion (13) at the top.

4. The cable material thermal deformation test cutter according to claim 3, characterized in that: The cutting portion (11) is provided with a square cutting notch, and the punching machine (3) cuts the sample to be tested through the cutting portion (11).

5. The cable material thermal deformation test cutter according to claim 3, characterized in that: The edges of the overlapping portion (13) and the fixing seat (21) abut against each other, and the overlapping portion (13) is used to fix the marking device (2).

6. The cable material thermal deformation test cutter according to claim 1, characterized in that: A limiting portion (211) is provided in the middle of the fixing seat (21), and the limiting portion (211) is used to limit the vertical movement of the marking needle (23).

7. The cable material thermal deformation test cutter according to claim 6, characterized in that: A limiting hole (212) is provided in the middle of the limiting portion (211), and the marking needle (23) enters the interior of the cutter body (1) through the limiting hole (212), and the end of the marking needle (23) is tapered.

8. The cable material thermal deformation test cutter according to claim 1, characterized in that: A spring (22) is arranged outside the marking needle (23), and the spring (22) is used to push the marking needle (23) to return to an initial position.

9. The cable material thermal deformation test cutter according to claim 8, characterized in that: Both ends of the spring (22) are in contact with the fixing seat (21) and the pressure head (24), and the compression stroke of the spring (22) is greater than or equal to the height of the cutter body (1).

10. The cable material thermal deformation test cutter according to claim 9, characterized in that: The middle of the pressure head (24) is provided with a mounting hole (241), and a fixing screw (25) passes through the mounting hole (241) to detachably connect the pressure head (24) and the marking needle (23).

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