A polyimide fiber flexural resilience testing device

Abstract

The present application relates to polyimide fiber detection technical field, disclose a kind of polyimide fiber bending resilience test device, including mounting seat and the detection mechanism being set in the top of mounting seat, the detection mechanism includes: fixed column, is set to the top of mounting seat;First adjusting mechanism, is set to the inside of fixed column;Movable part;Second adjusting mechanism, is set to the inside of movable part;The present application is through first adjusting piece component and second adjusting piece component, when the test angle of polyimide fiber needs to be adjusted, by rotating first adjusting piece and making movable shaft rotate, make movable plate push polyimide fiber to adjust the angle when polyimide fiber is tested, need to adjust the test strength, rotate second adjusting piece and make movable disc rotate, by controlling the rotation angle of movable disc so that the strength of pulling polyimide fiber can be adjusted, the test angle and strength of polyimide fiber can be adjusted, so that test result is more accurate.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of polyimide fiber detection, and more particularly to a polyimide fiber bending resilience testing device. BACKGROUND

[0002] Polyimide fiber, also known as aryl imide fiber, refers to a fiber containing aryl imide in the molecular chain. Polyimide fiber has good spinnability and can be made into various textiles for special occasions. Due to its high and low temperature resistance, flame retardance, non-melting and dripping, self-extinguishing after leaving fire, and excellent thermal insulation, polyimide fiber thermal protective clothing is comfortable to wear, has good skin adaptability, permanent flame retardance, and is dimensionally stable, safe, and has a long service life. Compared with other fibers, polyimide fiber is also an excellent thermal insulation material due to its low thermal conductivity. Polyimide fiber has a variety of synthetic monomers, which makes it have a variety of chemical structures and condensed state structures. Polyimide fibers prepared from different formulations exhibit different degrees of softness and hardness. In order to scientifically guide its application in downstream products such as fabric processing and prepreg processing, the softness and hardness of polyimide fiber need to be characterized. The softness and hardness are generally tested by a bending resilience testing device for polyimide fiber bending resilience.

[0003] The conventional polyimide fiber bending resilience testing device has the problems that it is inconvenient to adjust the test angle and force of the polyimide fiber according to the needs, the test index is single, and the test result is not accurate. SUMMARY

[0004] The purpose of the present application is to provide a polyimide fiber bending resilience testing device that can adjust the test angle and force of the polyimide fiber, making the test result more accurate.

[0005] The technical scheme adopted by the present application is as follows: a polyimide fiber bending resilience testing device, comprising a mounting seat and a detection mechanism arranged on the top of the mounting seat, the detection mechanism comprising:

[0006] A fixed column is arranged on the top of the mounting seat for mounting the polyimide fiber to be tested.

[0007] A first adjusting mechanism is arranged in the fixed column for adjusting the angle of the polyimide fiber during testing.

[0008] A movable part is movably arranged in the mounting seat.

[0009] A second adjusting mechanism is arranged in the movable part for adjusting the tightness of the polyimide fiber.

[0010] The first adjusting mechanism comprises a first adjusting piece, a movable shaft, a gear, a rack and a movable plate, the fixed column is fixedly connected at the top of the mounting seat, the movable shaft is rotatably connected in the fixed column, the fixed column is internally provided with a movable cavity, the gear is fixedly connected at the side wall of the movable shaft, the gear is located in the movable cavity, the rack is slidably connected in the fixed column, the rack is located in the movable cavity, and the rack is engaged with the gear, the movable plate is fixedly connected at one end of the rack, and the first adjusting piece is fixedly connected at one end of the movable shaft.

[0011] Optionally, the fixed column and the movable plate are internally provided with matched first positioning grooves.

[0012] Optionally, the fixed column is fixedly connected with a fixed frame, the first clamping piece is movably connected with the first torsional spring in the fixed frame, and the first clamping piece is matched with the first positioning groove.

[0013] Optionally, the first clamping piece is fixedly connected with an anti-skid piece, and the anti-skid piece is provided with a plurality of anti-skid pieces.

[0014] Optionally, the fixed column is fixedly connected with a mounting frame at the top, the first spring is fixedly connected in the mounting frame, one end of the first spring is fixedly connected with a clamping block, the first adjusting piece is internally provided with a clamping groove matched with the clamping block, and the clamping groove is provided with a plurality of clamping grooves.

[0015] Optionally, the fixed column is fixedly connected with a fixed disc at the side wall, the fixed disc is located at the bottom of the movable plate, and the fixed disc is internally engraved with a second scale line.

[0016] Optionally, the second adjusting mechanism comprises a movable disc, a mounting shaft, a second adjusting piece and a second clamping piece, the mounting shaft is rotatably connected in the movable piece, the second adjusting piece is fixedly connected at one end of the mounting shaft, the second adjusting piece is located at the top of the movable piece, the movable disc is fixedly connected at the side wall of the mounting shaft, the movable disc is located in the movable piece, the movable disc is internally provided with a clamping groove, the second clamping piece is movably connected in the clamping groove through the second spring, one end of the second clamping piece is fixedly connected with an anti-skid pad, and the side wall of the movable disc is provided with a second positioning groove.

[0017] Optionally, the movable piece is internally provided with a mounting cavity, the mounting shaft is fixedly connected with a ratchet at the side wall, the ratchet is located in the mounting cavity, the mounting cavity is fixedly connected with a fixed shaft at the inside, the fixed shaft is movably connected with a clamping piece through a second torsional spring at the side wall, and the clamping piece is matched with the ratchet.

[0018] Optionally, a groove is formed in the mounting seat, a threaded rod is rotatably connected in the groove, the movable piece is movably connected to the side wall of the threaded rod, a third adjusting piece is fixedly connected to one end of the threaded rod, and the third adjusting piece is located on one side of the mounting seat.

[0019] Optionally, a fixed plate is fixedly connected in the movable piece, a first scale line is engraved in the fixed plate, and an auxiliary line is engraved in the fixed plate.

[0020] The application has the following technical effects:

[0021] (1) When the test angle of the polyimide fiber needs to be adjusted, the first adjusting piece is rotated to drive the movable shaft to rotate, the gear on the side wall is driven to rotate when the movable shaft rotates, the rack meshed with the gear is driven to move in the movable cavity, and the movable plate at one end is driven to move, so that the polyimide fiber is pushed to adjust the test angle of the polyimide fiber during the test. When the test force needs to be adjusted, the second adjusting piece is rotated to drive the mounting shaft to rotate, so that the movable disc on the side wall of the mounting shaft is rotated in the movable piece. When the movable disc is rotated, the polyimide fiber is pulled, and the rotation angle of the movable disc is controlled to adjust the pulling force of the polyimide fiber. In this way, the test force during the test can be adjusted, and the test angle and the force of the polyimide fiber can be adjusted, so that the test result is more accurate.

[0022] (2) When the first adjusting piece is rotated, the clamping block is clamped in the clamping groove in the first adjusting piece under the pushing of the first spring, so as to fix the first adjusting piece and prevent the first adjusting piece from rotating during the test, so as to prevent the adjusted angle of the polyimide fiber from changing. When the mounting shaft is rotated, the clamping piece is clamped in the ratchet wheel under the action force of the second torsional spring, so that the mounting shaft can only rotate in one direction, preventing the mounting shaft from rotating during the test, and making the polyimide fiber test process more stable.

[0023] (3) The auxiliary line can be used for indication, so that the position of the polyimide fiber cut off during each test is the same. The first scale line can be used for observing the angle of the polyimide fiber during the test, and the second scale line can be used for observing the angle of the polyimide fiber after the polyimide fiber is cut off.

[0024] (4) when the polyimide fiber needs to be tested, the first clamping piece is first pried open, the polyimide fiber is placed in the first positioning groove, and then the first clamping piece is loosened, the first clamping piece clamps the polyimide fiber in the first positioning groove under the action force of the first torsional spring to prevent the polyimide fiber from falling off during the test, and the anti-skid piece arranged on the side wall of the first clamping piece makes the clamping effect of the first clamping piece better. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0026] Figure 1 It is a structural schematic diagram of the present application;

[0027] Figure 2 It is a top view structural schematic diagram of the present application;

[0028] Figure 3 It is a partial sectional view of the movable piece of the present application;

[0029] Figure 4 It is a partial sectional view of the movable disc of the present application;

[0030] Figure 5 It is a structural schematic diagram of the first clamping piece of the present application;

[0031] Figure 6 It is a partial sectional view of the first adjusting piece and the mounting frame of the present application;

[0032] Figure 7 It is a partial sectional view of the movable cavity at the fixed column of the present application.

[0033] In the drawings, the component list represented by each sign is as follows:

[0034] 1, mounting seat; 2, groove; 3, threaded rod; 4, movable piece; 5, fixed plate; 6, first scale line; 7, auxiliary line; 8, movable disc; 9, fixed column; 10, fixed disc; 11, second scale line; 12, fixed frame; 13, first clamping piece; 14, first positioning groove; 15, first adjusting piece; 16, second adjusting piece; 17, third adjusting piece; 18, mounting frame; 19, polyimide fiber; 20, mounting shaft; 21, ratchet wheel; 22, fixed shaft; 23, clamping piece; 24, second clamping piece; 25, non-slip pad; 26, clamping groove; 27, second positioning groove; 28, anti-skid piece; 29, clamping groove; 30, clamping block; 31, movable shaft; 32, gear; 33, rack; 34, movable plate; 35, movable cavity; 36, limiting groove; 37, supporting rod. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] Please refer to Figures 1-7The application provides a polyimide fiber bending resilience testing device, which has a mounting seat 1 and a detection mechanism arranged on the top of the mounting seat 1. The detection mechanism comprises a fixed column 9 arranged on the top of the mounting seat 1 and used for mounting a polyimide fiber 19 to be tested, a first adjusting mechanism arranged in the fixed column 9 and used for adjusting the angle of the polyimide fiber 19 during testing, and a movable piece 4 movably arranged in the mounting seat 1. A groove 2 is arranged in the mounting seat 1, a threaded rod 3 is rotatably connected to the inside of the groove 2, the movable piece 4 is movably connected to the side wall of the threaded rod 3, a third adjusting piece 17 is fixedly connected to one end of the threaded rod 3 and located on one side of the mounting seat 1, the movable piece 4 can move along the groove 2 when the threaded rod 3 rotates, the moving direction of the movable piece 4 is adjusted by controlling the rotating direction of the threaded rod 3, the third adjusting piece 17 is arranged to facilitate the rotation of the threaded rod 3, and the position of the movable piece 4 can be adjusted according to the length of the polyimide fiber 19. A second adjusting mechanism is arranged in the movable piece 4 and used for adjusting the tightness of the polyimide fiber 19. The first adjusting mechanism comprises a first adjusting piece 15, a movable shaft 31, a gear 32, a rack 33 and a movable plate 34. The fixed column 9 is fixedly connected to the top of the mounting seat 1, the movable shaft 31 is rotatably connected to the inside of the fixed column 9, the fixed column 9 is provided with a movable cavity 35, the gear 32 is fixedly connected to the side wall of the movable shaft 31 and located in the movable cavity 35, the rack 33 is slidably connected to the inside of the fixed column 9 and located in the movable cavity 35 and engaged with the gear 32, the movable plate 34 is fixedly connected to one end of the rack 33, a supporting rod 37 is fixedly arranged on one side of the movable plate 34, the fixed column 9 is provided with a limiting groove 36, and the supporting rod 37 is located in the limiting groove 36. The supporting rod 37 is arranged to support the movable plate 34 and prevent the movable plate 34 from deviating during movement. The first adjusting piece 15 is fixedly connected to one end of the movable shaft 31 and located on the top of the fixed column 9. The fixed column 9 and the movable plate 34 are both provided with matched first positioning grooves 14. During testing, the polyimide fiber 19 is located in the first positioning groove 14. When the testing angle of the polyimide fiber 19 needs to be adjusted, the first adjusting piece 15 is rotated to drive the movable shaft 31 to rotate, the gear 32 on the side wall is driven to rotate when the movable shaft 31 rotates, the rack 33 engaged with the gear 32 is driven to move in the movable cavity 35, the movable plate 34 at one end is driven to move, the movable plate 34 pushes the polyimide fiber 19, and thus the testing angle of the polyimide fiber 19 is adjusted.

[0037] In some embodiments, referring to Figure 1 、 Figure 5 、 Figure 6The side wall of the fixing column 9 is fixedly connected with a fixing frame 12, the inside of the fixing frame 12 is movably connected with a first clamping piece 13 through a first torsion spring, the side wall of the first clamping piece 13 is fixedly connected with an anti-skid piece 28, a plurality of anti-skid pieces 28 are arranged, when the polyimide fiber 19 needs to be tested, the first clamping piece 13 is first pried open, the polyimide fiber 19 is placed in the first positioning groove 14, then the first clamping piece 13 is loosened, the first clamping piece 13 clamps the polyimide fiber 19 in the first positioning groove 14 under the action of the first torsion spring, so that the polyimide fiber 19 is prevented from falling off in the testing process, the clamping effect of the first clamping piece 13 is better through the arrangement of the anti-skid piece 28 on the side wall of the first clamping piece 13, the top of the fixing column 9 is fixedly connected with a mounting frame 18, the inside of the mounting frame 18 is fixedly connected with a first spring, one end of the first spring is fixedly connected with a clamping block 30, a clamping groove 29 matched with the clamping block 30 is arranged in the first adjusting piece 15, a plurality of clamping grooves 29 are arranged, when the first adjusting piece 15 is rotated, the clamping block 30 is clamped in the clamping groove 29 in the first adjusting piece 15 under the pushing of the first spring, so that the first adjusting piece 15 is fixed, and the first adjusting piece 15 is prevented from rotating by itself in the testing process, so that the angle of the polyimide fiber 19 after adjustment is changed.

[0038] In some embodiments, referring to Figure 1 、 Figure 3 、 Figure 4The second adjusting mechanism comprises the movable disc 8, the mounting shaft 20, the second adjusting part 16 and the second clamping part 24, the mounting shaft 20 is rotationally connected in the movable part 4, the second adjusting part 16 is fixedly connected at one end of the mounting shaft 20, the second adjusting part 16 is located at the top of the movable part 4, the movable disc 8 is fixedly connected at the side wall of the mounting shaft 20, the movable disc 8 is located in the movable part 4, the clamping groove 26 is formed in the movable disc 8, the second clamping part 24 is movably connected in the clamping groove 26 through the second spring, the second clamping part 24 is fixedly connected with the anti-skid pad 25 at one end, the second positioning groove 27 is formed in the side wall of the movable disc 8, the first positioning groove 14 and the second positioning groove 27 are located in the same horizontal plane, the two ends of the polyimide fiber 19 to be tested can be placed in the clamping groove 26 by setting the clamping groove 26 in the movable disc 8, the two ends of the polyimide fiber 19 to be tested are clamped and fixed by the second spring pushing the second clamping part 24, so that the polyimide fiber 19 is located in the second positioning groove 27, the clamping effect of the second clamping part 24 can be better by setting the anti-skid pad 25 at one end of the second clamping part 24, the mounting shaft 20 is rotated by setting the second adjusting part 16, so that the movable disc 8 at the side wall of the mounting shaft 20 is rotated in the movable part 4, the polyimide fiber 19 is pulled when the movable disc 8 is rotated, the pulling strength of the polyimide fiber 19 can be adjusted by controlling the rotation angle of the movable disc 8, so that the test strength in the test process can be adjusted, the mounting cavity is formed in the movable part 4, the ratchet wheel 21 is fixedly connected at the side wall of the mounting shaft 20, the ratchet wheel 21 is located in the mounting cavity, the fixed shaft 22 is fixedly connected in the mounting cavity, the clamping part 23 is movably connected at the side wall of the fixed shaft 22 through the second torsional spring, the clamping part 23 is matched with the ratchet wheel 21, the clamping part 23 is clamped in the ratchet wheel 21 under the action of the second torsional spring when the mounting shaft 20 is rotated by setting the ratchet wheel 21 at the side wall of the mounting shaft 20, so that the mounting shaft 20 can only rotate in one direction, preventing the mounting shaft 20 from rotating by itself during the test, the clamping groove 26 in the movable disc 8 is rotated to the initial position after the test is completed.

[0039] In some embodiments, referring to Figure 1 、 Figure 2 The fixed column 9 is fixedly connected with the fixed disc 10 at the side wall, the fixed disc 10 is located at the bottom of the movable plate 34, the second scale line 11 is engraved in the fixed disc 10, the fixed plate 5 is fixedly connected in the movable part 4, the first scale line 6 is engraved in the fixed plate 5, the auxiliary line 7 is engraved in the fixed plate 5, the auxiliary line 7 can be used for indication, so that the position of the polyimide fiber 19 cut off is the same each time, the angle of the polyimide fiber 19 during the test can be observed more conveniently by setting the first scale line 6, the angle of the polyimide fiber 19 after the polyimide fiber 19 is cut off can be observed more conveniently by setting the second scale line 11.

[0040] The working procedure and principle of the present application: when testing the polyimide fiber 19, first, the first clamping piece 13 is opened, the polyimide fiber 19 is placed in the first positioning groove 14, then the first clamping piece 13 is loosened, the first clamping piece 13 clamps the polyimide fiber 19 in the first positioning groove 14 under the action of the first torsional spring to prevent the polyimide fiber 19 from falling off during the test, then the two ends of the polyimide fiber 19 are placed in the clamping groove 26, the second clamping piece 24 is pushed by the second spring to clamp and fix the two ends of the polyimide fiber 19 to be tested, so that the polyimide fiber 19 is located in the second positioning groove 27, the auxiliary line 7 can be used for indication, so that the position of the polyimide fiber 19 cut off is the same each time, the first scale line 6 can be used for observing the angle of the polyimide fiber 19 during the test, which is angle A, the second scale line 11 can be used for observing the angle of the polyimide fiber 19 after being cut off, which is angle B, and B / A represents the bending resilience of the polyimide fiber 19, when the test angle of the polyimide fiber 19 needs to be adjusted, the first adjusting piece 15 is rotated to drive the movable shaft 31 to rotate, when the movable shaft 31 rotates, the gear 32 on the side wall will rotate, the rotation of the gear 32 will drive the rack 33 meshed with the gear 32 to move in the movable cavity 35, thereby driving the movable plate 34 at one end to move, so that the movable plate 34 pushes the polyimide fiber 19 to adjust the angle of the polyimide fiber 19 during the test, when the test force needs to be adjusted, the second adjusting piece 16 is rotated to drive the mounting shaft 20 to rotate, thereby driving the movable disc 8 on the side wall of the mounting shaft 20 to rotate in the movable piece 4, when the movable disc 8 rotates, the polyimide fiber 19 will be pulled, the rotation angle of the movable disc 8 is controlled to adjust the pulling force of the polyimide fiber 19, so that the test force during the test can be adjusted.

[0041] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments described. Obviously, according to the content of the present application, many modifications and changes can be made. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and use the present application. The present application is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A polyimide fiber bending resilience testing device, the bending resilience testing device having a mounting seat (1) and a detection mechanism arranged on the top of the mounting seat (1), characterized in that, The detection mechanism comprises: A fixed column (9) is arranged at the top of the mounting seat (1) and used for mounting the polyimide fiber (19) to be tested; A first adjusting mechanism is arranged in the fixed column (9) and used for adjusting the angle of the polyimide fiber (19) during testing; A movable part (4) is movably arranged in the mounting seat (1); A second adjusting mechanism is arranged in the movable part (4) and used for adjusting the tightness of the polyimide fiber (19); The first adjusting mechanism comprises a first adjusting part (15), a movable shaft (31), a gear (32), a rack (33) and a movable plate (34), the fixed column (9) is fixedly connected to the top of the mounting seat (1), the movable shaft (31) is rotatably connected to the inside of the fixed column (9), the inside of the fixed column (9) is provided with a movable cavity (35), the gear (32) is fixedly connected to the side wall of the movable shaft (31), the gear (32) is located in the movable cavity (35), the rack (33) is slidably connected to the inside of the fixed column (9), the rack (33) is located in the movable cavity (35), and the rack (33) is engaged with the gear (32), the movable plate (34) is fixedly connected to one end of the rack (33), the first adjusting part (15) is fixedly connected to one end of the movable shaft (31), and the first adjusting part (15) is located at the top of the fixed column (9); The inside of the fixed column (9) and the inside of the movable plate (34) are both provided with a matching first positioning groove (14); The side wall of the fixed column (9) is fixedly connected with a fixed frame (12), the inside of the fixed frame (12) is movably connected with a first clamping part (13) through a first torsional spring, and the first clamping part (13) is matched with the first positioning groove (14); The second adjusting mechanism comprises a movable disc (8), a mounting shaft (20), a second adjusting part (16) and a second clamping part (24), the mounting shaft (20) is rotatably connected to the inside of the movable part (4), the second adjusting part (16) is fixedly connected to one end of the mounting shaft (20), the second adjusting part (16) is located at the top of the movable part (4), the movable disc (8) is fixedly connected to the side wall of the mounting shaft (20), the movable disc (8) is located in the movable part (4), the inside of the movable disc (8) is provided with a clamping groove (26), the second clamping part (24) is movably connected to the inside of the clamping groove (26) through a second spring, one end of the second clamping part (24) is fixedly connected with an anti-skid pad (25), and the side wall of the movable disc (8) is provided with a second positioning groove (27).

2. The polyimide fiber flexural resilience testing device according to claim 1, characterized in that: The side wall of the first clamping part (13) is fixedly connected with an anti-skid part (28), and the anti-skid part (28) is provided with a plurality of anti-skid parts.

3. The polyimide fiber flexural resilience testing device according to claim 1, wherein: The fixed column (9) top fixedly connected with the mounting bracket (18), the mounting bracket (18) is fixedly connected with the first spring inside, one end of the first spring is fixedly connected with the clamping block (30), the first adjusting part (15) is internally provided with the clamping groove (29) matched with the clamping block (30), and the clamping groove (29) is provided with a plurality of clamping grooves.

4. The polyimide fiber flexural resilience testing device according to claim 1, wherein: The fixed column (9) is fixedly connected with the fixed disc (10) on the side wall, the fixed disc (10) is located at the bottom of the movable plate (34), and the fixed disc (10) is internally engraved with the second scale line (11).

5. The polyimide fiber flexural resilience testing device according to claim 1, wherein: The movable part (4) is internally provided with an installation cavity, the installation shaft (20) is fixedly connected with the ratchet wheel (21) on the side wall, the ratchet wheel (21) is located in the installation cavity, the installation cavity is fixedly connected with the fixed shaft (22) inside, the fixed shaft (22) is movably connected with the clamping piece (23) through the second torsional spring on the side wall, and the clamping piece (23) is matched with the ratchet wheel (21).

6. The polyimide fiber flexural resilience testing device according to claim 1, wherein: The mounting seat (1) is internally provided with the recess (2), the recess (2) is rotatably connected with the threaded rod (3) inside, the movable part (4) is movably connected on the side wall of the threaded rod (3), one end of the threaded rod (3) is fixedly connected with the third adjusting part (17), and the third adjusting part (17) is located on one side of the mounting seat (1).

7. The polyimide fiber flexural resilience testing device according to claim 1, wherein: The movable part (4) is fixedly connected with the fixed plate (5) inside, the fixed plate (5) is internally engraved with the first scale line (6), and the fixed plate (5) is internally engraved with the auxiliary line (7).

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