Computer instrument cable and bending resistance test equipment thereof

Abstract

The invention relates to the technical field of cables, in particular to a computer instrument cable and bending resistance testing equipment thereof.The cable comprises a cable inner core, a high-temperature-resistant layer and an outer sheath are sequentially arranged outside the cable inner core, the cable inner core comprises an inner core protection layer and three cable cores located in the inner core protection layer, the three cable cores are mutually twisted, and the high-temperature-resistant layer and the outer sheath are arranged in the inner core protection layer. Flame-retardant filling materials are filled between the three cable cores and the inner core protection layer. The bending resistance test equipment comprises a test board, three groups of test assemblies which are correspondingly arranged on the left side, the middle side and the right side of the test board and slide back and forth, a driving assembly which is arranged at the bottom of the test board and is connected with the three groups of test assemblies, and guide assemblies which are arranged at the left end and the right end of the test board. According to the invention, the high temperature resistance, flame retardance and other properties of the cable are greatly improved; the outer sheath can effectively improve the mechanical performance of the cable; by synchronously driving the testing assemblies which move reversely, the bending testing action is performed on the cable, the automation degree is high, and the testing efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a computer instrument cable and a bending resistance testing device thereof. Background Art

[0002] Computer instrument cables are often used in automatic control systems based on electronic computers to transmit analog and digital signals such as detection, control, interlocking, and alarm of process variables of production equipment. The existing computer instrument cables have unreasonable structural design, and are not very effective in high temperature resistance and flame retardancy. They are prone to aging and surface rupture, which seriously affects the actual production efficiency and causes certain losses to the factory.

[0003] In addition, after the production of computer instrument cables is completed, it is necessary to conduct bending tests on samples to prevent the wires or insulators from being damaged due to stretching or bending during use. Therefore, bending test equipment is required to test the bending resistance of computer instrument cables during the research and development and production process. The current bending resistance test equipment bundles the wires and cables together to form a ring buckle, and hangs weights under the ring buckle for testing. However, the current bending test equipment is cumbersome to operate, and the weights are prone to falling and scratching the insulation layer of the wires and cables during the test, affecting the test results of the wires and cables. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a computer instrument cable and a bending resistance test device thereof.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0006] A computer instrument cable comprises a cable inner core, wherein a high temperature resistant layer and an outer sheath are sequentially arranged on the outside of the cable inner core, the cable inner core comprises an inner core protective layer, and three cable cores located inside the inner core protective layer, the three cable cores are twisted together, and a flame retardant filler is filled between the three cable cores and the inner core protective layer.

[0007] As a further improvement of the present invention, the inner core protective layer is a shielding layer.

[0008] As a further improvement of the present invention, the outside of the three cable cores are all covered with an insulating layer, and the inside is correspondingly a control conductor, a communication conductor, and a power conductor, and the control conductor, communication conductor, and power conductor are all annealed copper wires.

[0009] A computer instrument cable bending resistance test device is used to test the above-mentioned computer instrument cable, comprising a test bench, three groups of test components correspondingly arranged on the left, middle and right sides of the test bench and sliding forward and backward, a driving component arranged at the bottom of the test bench and connected to the three groups of test components, and a guiding component arranged at the left and right ends of the test bench, wherein the three groups of test components and the guiding component are on the same left and right straight line.

[0010] As a further improvement of the present invention, two side baffles arranged along the left-right direction are provided at the front and rear ends of the test bench.

[0011] The beneficial effects of the present invention are:

[0012] The present invention provides a computer instrument cable, which greatly improves the high temperature resistance, flame retardancy and other properties of the cable by filling the inner core of the cable with flame retardant filler and coating the outer core of the cable with a high temperature resistant layer; the outer sheath can effectively improve the mechanical properties of the cable; in addition, a computer instrument cable bending resistance test device is provided, which performs a bending test on the cable by synchronously driving a test component that moves in the opposite direction. Compared with the prior art, the present invention has a high degree of automation and greatly improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a schematic diagram of the structure of the computer instrument cable;

[0015] Figure 2 It is a schematic diagram of the axonometric structure of the bending resistance test equipment from a bottom up view;

[0016] Figure 3 It is a schematic diagram of the axonometric top view of the bending resistance test equipment;

[0017] Figure 4 This is a schematic diagram of the connection structure between three groups of test components and drive components in the bending resistance test equipment.

[0018] In the figure: 1. control conductor; 2. communication conductor; 3. power-carrying conductor; 4. insulation layer; 5. flame retardant filler; 6. inner core protective layer; 7. high temperature resistant layer; 8. outer sheath; 9. test bench; 10. side baffle; 11. slide groove; 12. base; 13. clamping column; 14. connecting plate; 15. driving rod; 16. connecting slide groove; 17. connecting protrusion; 18. transmission pulley; 19. transmission belt; 20. mounting plate; 21. driving motor; 22. rotating seat; 23. guide ring. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, a computer instrument cable includes a control conductor 1, a communication conductor 2, a power conductor 3, an insulating layer 4, a flame retardant filler 5, an inner core protective layer 6, a high temperature resistant layer 7, and an outer sheath 8.

[0021] The control conductor 1, the communication conductor 2, and the power conductor 3 are respectively coated with an insulating layer 4 to form three cable cores with different functions, and the three cable cores are twisted together. The inner core protective layer 6 is coated on the outside of the three twisted cable cores, and the inner core protective layer 6 is a shielding layer, which plays a shielding role; the flame retardant filler 5 is filled between the inner core protective layer 6 and the three cable cores to play a flame retardant role; the above structure together constitutes the inner core of the cable. The high temperature resistant layer 7 is coated on the outside of the inner core protective layer 6, and cooperates with the flame retardant filler 5 inside the inner core protective layer 6 to provide double-layer protection for the inner core of the cable, which greatly improves the high temperature resistance and flame retardancy of the cable; the outer sheath 8 is coated on the outside of the high temperature resistant layer 7, which can effectively improve the mechanical properties of the cable and is not easy to be damaged.

[0022] like Figures 2 to 4 As shown, a computer instrument cable bending resistance test equipment is used to test the above-mentioned computer instrument cable, including a test table 9, three groups of test components correspondingly arranged on the left, middle and right sides of the test table 9 and sliding back and forth, a driving component arranged at the bottom of the test table 9 and connected to the three groups of test components, and a guide component arranged at the left and right ends of the test table 9, and the three groups of test components and the guide component are on the same left and right straight line.

[0023] As a further improvement of this embodiment, two side baffles 10 arranged along the left and right directions are provided at the front and rear ends of the test bench 9. The side baffles 10 play a protective role to prevent the cable from splashing around when it breaks.

[0024] As a further improvement of this embodiment, three slide grooves 11 arranged along the front-to-back direction are correspondingly provided on the left, middle and right sides of the test bench 9, the two slide grooves 11 located on the left and right sides extend from the middle to the front side, and the slide groove 11 located on the middle side extends from the middle to the rear side, and the three groups of test components are correspondingly slidably installed in the three slide grooves 11. The three groups of test components all include a base 12 slidably installed in the slide grooves 11, and two clamping columns 13 arranged on the base 12, the two clamping columns 13 are distributed front and back with a spacing between them, and the spacing size is greater than or equal to the cable diameter size.

[0025] As a further improvement of this embodiment, the driving assembly includes three connecting plates 14 located below the test bench 9 and fixedly connected to the bottom of the base 12 in the three test assemblies, three driving rods 15 with one end slidingly connected to the three connecting plates 14, three transmission pulleys 18 coaxially connected to the other ends of the three driving rods 15, and a transmission belt 19 connected to the three transmission pulleys 18. Three mounting plates 20 are provided at the bottom of the test bench 9, and the three driving rods 15 and the three transmission pulleys 18 are rotatably mounted on the three mounting plates 20. The driving rod 15 located in the middle is connected to a driving motor 21. The three connecting plates 14 are all arranged in the left-right direction, and the lower plate surface is provided with connecting grooves 16 distributed in the same direction, and one end of the three driving rods 15 is provided with a connecting protrusion 17 slidably mounted in the connecting groove 16.

[0026] As a further improvement of this embodiment, the guide assembly includes two rotating seats 22 arranged at the left and right ends of the test bench 9, and two guide rings 23 vertically installed on the two rotating seats 22. The inner ring diameter of the two guide rings 23 is greater than or equal to the cable diameter. The side edges of the two guide rings 23 relative to the inner ring are chamfered to reduce the friction of the test on the cable.

[0027] The working principle and use process of the present invention:

[0028] When using, test equipment such as Figure 3 As shown, the computer instrument cable to be tested is passed through the guide ring 23, the three clamping columns 13 on the three groups of test components from the left or right side of the test bench 9 in turn, and passes through the guide ring 23 at the other end; then, the rotation speed, test duration and test cycle of the drive motor 21 are set; the drive motor 21 is started, and the three drive rods 15 are driven to rotate synchronously in the same direction through the transmission pulley 18 and the transmission belt 19, and the connecting plate 14 drives the base 12 to slide back and forth along the slide groove 11 through the sliding cooperation between the connecting protrusion 17 and the connecting slide groove 16. Since the two slide grooves 11 on the left and right sides extend from the middle to the front side, and the slide groove 11 on the middle side extends from the middle to the rear side, the bases 12 on the left and right sides move in opposite directions to the base 12 on the middle side, thereby realizing the bending test of the computer instrument cable; after the test is completed, check whether the outer skin and internal structure of the computer instrument cable are torn or damaged.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A computer instrument cable, characterized in that: The invention comprises a cable inner core, wherein a high temperature resistant layer (7) and an outer sheath (8) are sequentially arranged on the outside of the cable inner core, wherein the cable inner core comprises an inner core protective layer (6), and three cable cores located inside the inner core protective layer (6), wherein the three cable cores are twisted together, and a flame retardant filler (5) is filled between the three cable cores and the inner core protective layer (6).

2. A computer instrument cable according to claim 1, characterized in that: The inner core protective layer (6) is a shielding layer.

3. A computer instrument cable according to claim 1, characterized in that: The outside of the three cable cores is covered with an insulating layer (4), and the inside thereof is a control conductor (1), a communication conductor (2), and a power conductor (3), and the control conductor (1), the communication conductor (2), and the power conductor (3) are all annealed copper wires.

4. A computer instrument cable bending resistance test equipment, characterized in that: A computer instrument cable for testing any one of claims 1 to 3, comprising a test bench (9), three groups of test components correspondingly arranged on the left, middle and right sides of the test bench (9) and sliding forward and backward, a drive component arranged at the bottom of the test bench (9) and connected to the three groups of test components, and a guide component arranged at the left and right ends of the test bench (9), wherein the three groups of test components and the guide component are on the same left and right straight line.

5. A computer instrument cable bending resistance test equipment according to claim 4, characterized in that: Two side baffles (10) arranged along the left-right direction are provided at the front and rear ends of the test bench (9).

6. A computer instrument cable bending resistance test equipment according to claim 4, characterized in that: The test bench (9) is provided with three slide grooves (11) arranged along the front-to-back direction on the left, middle and right sides respectively. The two slide grooves (11) located on the left and right sides extend from the middle to the front side, and the slide groove (11) located on the middle side extends from the middle to the rear side. The three groups of test components are correspondingly slidably installed in the three slide grooves (11).

7. A computer instrument cable bending resistance test equipment according to claim 6, characterized in that: The three groups of test components all include a base (12) slidably mounted in the slide groove (11), and two clamping columns (13) arranged on the base (12), wherein the two clamping columns (13) are distributed front and back with a spacing therebetween, and the spacing dimension is greater than or equal to the cable diameter dimension.

8. A computer instrument cable bending resistance test equipment according to claim 7, characterized in that: The driving assembly comprises three connecting plates (14) located below the test bench (9) and fixedly connected to the bottom of the base (12) in the three groups of test assemblies, three driving rods (15) one end of which is slidably connected to the three connecting plates (14), three transmission pulleys (18) coaxially connected to the other ends of the three driving rods (15), and a transmission belt (19) connected to the three transmission pulleys (18); three mounting plates (20) are arranged at the bottom of the test bench (9); the three driving rods (15) and the three transmission pulleys (18) are rotatably mounted on the three mounting plates (20); and the driving rod (15) located in the middle is connected to a driving motor (21).

9. A computer instrument cable bending resistance test equipment according to claim 8, characterized in that: The three connecting plates (14) are arranged in the left-right direction, and the lower plate surface is provided with connecting slide grooves (16) distributed in the same direction, and one end of the three driving rods (15) is provided with a connecting protrusion (17) slidably installed in the connecting slide groove (16).

10. A computer instrument cable bending resistance test equipment according to claim 4, characterized in that: The guide assembly comprises two rotating seats (22) arranged at the left and right ends of the test bench (9), and two guide rings (23) vertically mounted on the two rotating seats (22); the inner ring diameters of the two guide rings (23) are greater than or equal to the cable diameter; and the inner ring sides of the two guide rings (23) are chamfered.

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