Twisting device and twisting method for testing tensile property of fiber multifilament

Abstract

The invention discloses a twisting device and a twisting method for testing the tensile property of a fiber multifilament, and relates to the technical field of performance testing of the fiber multifilament, the twisting device comprises a bottom plate, the upper end of the bottom plate is fixedly provided with a first side plate and a second side plate; the twisting mechanism is arranged on the first side plate and used for twisting the fiber multifilaments; the angle reference mechanism is arranged on the first side plate and connected with the twisting mechanism, and the angle reference mechanism is used for referring to the twisting turns when the twisting mechanism twists the fiber multifilaments; the fixing mechanism is arranged on the first side plate and used for fixing the clamping mechanism; the traction mechanism is arranged on the second side plate and is used for pulling the fiber multifilaments; the invention discloses a twisting method for testing the tensile property of fiber multifilaments. According to the invention, convenient twisting and tensile testing of the fiber multifilament can be realized, the testing efficiency is higher, the stability of the testing process is good, and the accuracy of the tensile strength result can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of fiber multifilament performance testing, and in particular to a fiber multifilament tensile performance testing twisting device and twisting method. Background Art

[0002] In the fiber material industry, the tensile property test of fiber multifilament is a key link in evaluating its quality and application performance. However, in the current test method, there are many deficiencies in the twisting treatment of fiber multifilament, which affects the accuracy and reliability of the test results, such as:

[0003] 1. Manual twisting. Different testers, test environments and other factors can easily cause differences in manual twisting methods, twisting numbers, etc., which will have a greater impact on the tensile properties of the fiber and cannot accurately reflect the optimal performance index of the fiber.

[0004] 2. The shear force caused by the deviation of the placement direction of the tested fiber multifilament sample relative to the moving direction of the fixture will interfere with the accuracy of the tensile strength results of the tested sample. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a fiber multifilament tensile property testing twisting device and twisting method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A fiber multifilament tensile property testing twisting device, comprising:

[0008] A bottom plate, a first side plate and a second side plate being fixed to an upper end of the bottom plate;

[0009] A twisting mechanism, disposed on the first side plate, for twisting the fiber multifilament;

[0010] An angle reference mechanism is arranged on the first side plate and connected to the twisting mechanism, and the angle reference mechanism is used for the twisting mechanism to refer to the number of twisting turns when twisting the fiber multifilament;

[0011] A fixing mechanism, disposed on the first side plate, for fixing the clamping mechanism;

[0012] A pulling mechanism, disposed on the second side plate, for pulling the fiber multifilament;

[0013] The clamping mechanism is connected between the twisting mechanism and the pulling mechanism and is used for clamping the fiber multifilament.

[0014] As a further improvement of the present invention, the twisting mechanism includes a rotating shaft horizontally penetrating the first side plate, the rotating shaft is rotatably connected to the first side plate, the end of the rotating shaft is fixedly connected to the first pulling seat, the side wall of the first pulling seat is provided with a pulling groove, the side wall of the rotating shaft is fixedly sleeved with a first gear, the top of the first side plate is fixedly installed with a motor, the output shaft of the motor is fixedly connected to the second gear, and the second gear is meshed with the first gear.

[0015] As a further improvement of the present invention, the angle reference mechanism includes a turntable, which is fixedly connected to one end of the rotating shaft away from the first pulling seat, a fixing ring is fixedly connected to the side wall of the first side plate, the turntable is fitted with the fixing ring, a pointer is fixedly connected to the side wall of the turntable, and angle scale lines are provided on the side wall of the fixing ring.

[0016] As a further improvement of the present invention, the fixing mechanism includes an electric telescopic rod fixedly installed on the top of the first side panel, a mounting groove is provided on the side wall of the first side panel, a fixing block is provided inside the mounting groove, and the telescopic end of the electric telescopic rod passes through the interior of the mounting groove and is fixedly connected to the upper end of the fixing block.

[0017] As a further improvement of the present invention, the pulling mechanism includes a second pulling seat, a pulling groove is provided on the side wall of the second pulling seat, a U-shaped block is fixedly connected to the side wall of the second pulling seat, a movable frame is horizontally penetrated through the second side plate, the left end of the movable frame is sleeved inside the U-shaped block, a pressure sensor is fixedly installed on the inner wall of the U-shaped block, the movable frame is slidably connected to the second side plate, and a hydraulic cylinder is fixedly installed on a side wall of the second side plate away from the second pulling seat.

[0018] As a further improvement of the present invention, the clamping mechanism includes two clamping structures, the clamping structures are a first hemispherical block and a second hemispherical block, the first hemispherical block is provided with two connecting grooves on the side wall close to the second hemispherical block, the second hemispherical block is provided with two connecting blocks on the side wall close to the first hemispherical block, the side wall of the first hemispherical block is provided with two mounting grooves, the two mounting grooves are respectively close to the two connecting grooves, the interiors of the two mounting grooves are provided with a clip extending to the interior of the connecting groove, and the connecting block is provided with a clip groove that cooperates with the clip.

[0019] As a further improvement of the present invention, a slider is fixedly connected to the lower side wall of the second pulling seat, a laser rangefinder is fixedly installed on the side wall of the slider close to the first pulling seat, a slide groove is provided at the upper end of the base plate, a slide rod is horizontally provided inside the slide groove, both ends of the slide rod are fixedly connected to the inner wall of the slide groove, and the slider is slidably sleeved on the slide rod.

[0020] As a further improvement of the present invention, the clamping member includes a clamping block arranged inside the mounting groove, one end of the clamping block is fixedly connected to a spring, one end of the spring away from the clamping block is fixedly connected to the inner wall of the mounting groove, and one end of the clamping block away from the spring passes through the inner bottom wall of the mounting groove.

[0021] A fiber multifilament tensile property test twisting method, the method is applicable to a fiber multifilament tensile property test twisting device, the method comprises the following steps:

[0022] S1, clamping the fiber multifilament with a clamping mechanism;

[0023] S2, then fix the clamping mechanism on the inner side of the twisting mechanism and the pulling mechanism respectively;

[0024] S3, twisting the fiber multifilaments by using a twisting mechanism, and completing the twisting of the fiber multifilaments according to the required number of twisting turns through the reference of the angle reference mechanism.

[0025] Beneficial effects of the present invention:

[0026] By setting up a clamping mechanism, the two ends of the fiber multifilament to be tested are respectively inserted into the positioning grooves of the combined first hemispherical block and the second hemispherical block, so that the two ends of the fiber multifilament can be fixed and then the tensile performance test can be carried out, which can ensure that no torsional shear force is generated during the test and the accuracy of the tensile strength result can be guaranteed.

[0027] By setting an angle reference mechanism and cooperating the pointer with the angle scale line on the surface of the fixed ring, the number of twisting turns of the fiber multifilament during twisting rotation can be referenced, and the fiber multifilament can be twisted according to the required number of twisting turns.

[0028] By setting a fixing mechanism, the rotating shaft can be pressed and fixed by the fixing mechanism, and then the first pulling seat can be fixed, which can ensure that the fiber multifilament will not rotate loose after twisting, and thus ensure the stability of the test process and the accuracy of the test results.

[0029] By setting a twisting mechanism and a pulling mechanism, the fiber multifilament can be rotated and twisted by the twisting mechanism, and the fiber multifilament can be pulled by the pulling mechanism, thereby realizing convenient twisting and stretching testing of the fiber multifilament, and the testing efficiency is higher.

[0030] The present invention can realize convenient twisting and stretching testing of fiber multifilaments, has higher testing efficiency, and has good stability during the testing process, and can ensure the accuracy of the tensile strength results. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of a twisting device for testing the tensile properties of fiber multifilaments proposed by the present invention;

[0032] Figure 2 This is a structural schematic diagram of a moving frame and a hydraulic cylinder of a fiber multifilament tensile property testing twisting device proposed by the present invention;

[0033] Figure 3 This is a structural schematic diagram of a second pulling seat, a pulling groove, a first hemispherical block, and a second hemispherical block of a fiber multifilament tensile property testing twisting device proposed by the present invention;

[0034] Figure 4 This is a structural schematic diagram of the connection state of the first hemispherical block and the second hemispherical block of a twisting device for testing the tensile properties of fiber multifilaments proposed by the present invention;

[0035] Figure 5 This is a structural schematic diagram of a first hemispherical block and a second hemispherical block in a separated state of a twisting device for testing tensile properties of fiber multifilaments proposed by the present invention;

[0036] Figure 6 This is a schematic structural diagram of a clamping member of a twisting device for testing the tensile properties of multifilament fibers proposed by the present invention;

[0037] Figure 7 The present invention provides a schematic structural diagram of a rotating shaft, a fixing ring, a rotating disk, a pointer and an angle scale line of a twisting device for testing the tensile properties of a fiber multifilament.

[0038] In the figure: 1 bottom plate, 2 first side plate, 3 first pulling seat, 4 pulling groove, 5 rotating shaft, 6 first gear, 7 second gear, 8 motor, 9 electric telescopic rod, 10 device groove, 11 fixed block, 12 fixed ring, 13 turntable, 14 pointer, 15 second pulling seat, 16 U-shaped block, 17 pressure sensor, 18 moving frame, 19 second side plate, 20 hydraulic cylinder, 21 slide groove, 22 slide rod, 23 slider, 24 laser rangefinder, 25 first hemispherical block, 26 second hemispherical block, 27 positioning groove, 28 mounting groove, 29 connecting block, 30 card slot, 31 connecting slot, 32 spring, 33 card block, 34 angle scale line. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Reference Figure 1-Figure 7 , a fiber multifilament tensile property testing twisting device, comprising:

[0041] A bottom plate 1, a first side plate 2 and a second side plate 19 are fixed to the upper end of the bottom plate 1;

[0042] A twisting mechanism, arranged on the first side plate 2, for twisting the fiber multifilament;

[0043] An angle reference mechanism is arranged on the first side plate 2 and connected to the twisting mechanism, and the angle reference mechanism is used for the twisting mechanism to refer to the number of twisting turns when twisting the fiber multifilament;

[0044] A fixing mechanism, disposed on the first side plate 2, for fixing the clamping mechanism;

[0045] A pulling mechanism, disposed on the second side plate 19, for pulling the fiber multifilament;

[0046] The clamping mechanism is connected between the twisting mechanism and the pulling mechanism and is used for clamping the fiber multifilament.

[0047] In the present invention, the twisting mechanism includes a rotating shaft 5 horizontally penetrating the first side plate 2, the rotating shaft 5 is rotatably connected to the first side plate 2, the end of the rotating shaft 5 is fixedly connected to the first pulling seat 3, the side wall of the first pulling seat 3 is provided with a pulling groove 4, the side wall of the rotating shaft 5 is fixedly sleeved with a first gear 6, the top of the first side plate 2 is fixedly installed with a motor 8, the output shaft of the motor 8 is fixedly connected to the second gear 7, and the second gear 7 is meshed with the first gear 6.

[0048] The angle reference mechanism includes a turntable 13, which is fixedly connected to one end of the rotating shaft 5 away from the first pulling seat 3. A fixing ring 12 is fixedly connected to the side wall of the first side plate 2. The turntable 13 is fitted with the fixing ring 12. A pointer 14 is fixedly connected to the side wall of the turntable 13. An angle scale line 34 is provided on the side wall of the fixing ring 12. By cooperating with the angle scale line 34 on the surface of the fixing ring 12, the number of twisting turns of the fiber multifilament during twisting rotation can be referenced, and the twisting of the fiber multifilament can be completed according to the required number of twisting turns.

[0049] The fixing mechanism includes an electric telescopic rod 9 fixedly installed on the top of the first side plate 2, a device groove 10 is provided on the side wall of the first side plate 2, a fixing block 11 is provided inside the device groove 10, the telescopic end of the electric telescopic rod 9 passes through the inside of the device groove 10 and is fixedly connected to the upper end of the fixing block 11, and the fixing block 11 is pressed against the rotating shaft 5 to fix the rotating shaft 5, thereby fixing the first pulling seat 3, ensuring that the fiber multifilament will not rotate loose after twisting, thereby ensuring the stability of the test process and the accuracy of the test results.

[0050] The pulling mechanism includes a second pulling seat 15, a pulling groove 4 is provided on the side wall of the second pulling seat 15, a U-shaped block 16 is fixedly connected to the side wall of the second pulling seat 15, a moving frame 18 is horizontally penetrated on the second side plate 19, the left end of the moving frame 18 is sleeved inside the U-shaped block 16, a pressure sensor 17 is fixedly installed on the inner wall of the U-shaped block 16, and the tension during the fiber multifilament tensile test can be detected by the pressure sensor 17, the moving frame 18 is slidably connected to the second side plate 19, and a hydraulic cylinder 20 is fixedly installed on the side wall of the second side plate 19 away from the second pulling seat 15. A slider 23 is fixedly connected to the lower side wall of the second pulling seat 15, and a laser rangefinder 24 is fixedly installed on the side wall of the slider 23 close to the first pulling seat 3. The laser rangefinder 24 can detect the moving distance of the second pulling seat 15. A slide groove 21 is provided at the upper end of the bottom plate 1, and a slide rod 22 is horizontally provided inside the slide groove 21. Both ends of the slide rod 22 are fixedly connected to the inner wall of the slide groove 21. The slider 23 is slidably sleeved on the slide rod 22. By sliding the slider 23 on the slide rod 22, the movement of the second pulling seat 15 can be guided to ensure the stability of the movement of the second pulling seat 15.

[0051] The clamping mechanism includes two clamping structures, the clamping structures are a first hemispherical block 25 and a second hemispherical block 26. Two connecting grooves 31 are provided on the side wall of the first hemispherical block 25 close to the second hemispherical block 26, and two connecting blocks 29 are provided on the side wall of the second hemispherical block 26 close to the first hemispherical block 25. Two mounting grooves 28 are provided on the side wall of the first hemispherical block 25. The two mounting grooves 28 are respectively close to the two connecting grooves 31. The interiors of the two mounting grooves 28 are both provided with a clamping piece extending to the interior of the connecting groove 31. The connecting block 29 is provided with a clamping piece 30 that cooperates with the clamping piece. The clamping piece includes a clamping block 33 arranged inside the mounting groove 28, one end of the clamping block 33 is fixedly connected to a spring 32, and the end of the spring 32 away from the clamping block 33 is fixedly connected to the inner wall of the mounting groove 28, and the end of the clamping block 33 away from the spring 32 passes through the inner bottom wall of the mounting groove 28.

[0052] The fiber multifilament tensile performance test twisting device, when in use, insert the two ends of the fiber multifilament to be tested into the positioning grooves 27 of the combined first hemispherical block 25 and the second hemispherical block 26 respectively, so that the two ends of the fiber multifilament can be fixed and then the tensile performance test is carried out, and then the combined first hemispherical block 25 and the second hemispherical block 26 are placed on the inner sides of the first pulling seat 3 and the second pulling seat 15 respectively, and then, the hydraulic cylinder 20 is started to extend, driving the moving frame 18 to move, and the pressure sensor 17 is squeezed by the movement of the moving frame 18, and the U-shaped block 16 is driven to move, and the second pulling seat 15 is driven to move at the same time, so that the fiber multifilament can be pulled, and the movement of the second pulling seat 15 can be detected by the laser rangefinder 24. The distance is detected, and the tension during the fiber multifilament tensile test can be detected by the pressure sensor 17. The motor 8 is started to drive the second gear 7 to rotate. Since the first gear 6 is meshed with the second gear 7, the rotating shaft 5 can be driven to rotate, and the first pulling seat 3 is driven to rotate by the rotating shaft 5, so that the fiber multifilament can be rotated and twisted. Then, the electric telescopic rod 9 is started to extend, and the fixed block 11 is driven to be pressed and fixed with the rotating shaft 5, so that the first pulling seat 3 can be fixed, and it can be ensured that the fiber multifilament will not rotate and loosen after twisting, so as to ensure the stability of the test process and the accuracy of the test results. Then, the twisted fiber multifilament is pulled, and the tensile performance of the twisted fiber multifilament can be tested.

[0053] A fiber multifilament tensile property test twisting method, the method is applicable to a fiber multifilament tensile property test twisting device, the method comprises the following steps:

[0054] S1, clamping the fiber multifilament with a clamping mechanism;

[0055] S2, then fix the clamping mechanism on the inner side of the twisting mechanism and the pulling mechanism respectively;

[0056] S3, twisting the fiber multifilaments by using a twisting mechanism, and completing the twisting of the fiber multifilaments according to the required number of twisting turns through the reference of the angle reference mechanism.

[0057] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fiber multifilament tensile performance test twisting device, characterized in that: include: A bottom plate (1), a first side plate (2) and a second side plate (19) being fixed to the upper end of the bottom plate (1); A twisting mechanism, arranged on the first side plate (2), for twisting the fiber multifilament; An angle reference mechanism is arranged on the first side plate (2) and connected to the twisting mechanism, and the angle reference mechanism is used for the twisting mechanism to refer to the number of twisting turns when twisting the fiber multifilament; A fixing mechanism, arranged on the first side plate (2) and used for fixing the clamping mechanism; A pulling mechanism, arranged on the second side plate (19), for pulling the fiber multifilament; The clamping mechanism is connected between the twisting mechanism and the pulling mechanism and is used for clamping the fiber multifilament.

2. A fiber multifilament tensile property testing twisting device according to claim 1, characterized in that: The twisting mechanism comprises a rotating shaft (5) which is horizontally penetrated and arranged on the first side plate (2), the rotating shaft (5) is rotatably connected to the first side plate (2), the end of the rotating shaft (5) is fixedly connected to the first pulling seat (3), the side wall of the first pulling seat (3) is provided with a pulling groove (4), the side wall of the rotating shaft (5) is fixedly sleeved with a first gear (6), the top of the first side plate (2) is fixedly installed with a motor (8), the output shaft of the motor (8) is fixedly connected to the second gear (7), and the second gear (7) is meshed with the first gear (6).

3. A fiber multifilament tensile property testing twisting device according to claim 2, characterized in that: The angle reference mechanism comprises a rotating disk (13), the rotating disk (13) being fixedly connected to one end of the rotating shaft (5) away from the first pulling seat (3), a fixing ring (12) being fixedly connected to the side wall of the first side plate (2), the rotating disk (13) being fitted with the fixing ring (12), a pointer (14) being fixedly connected to the side wall of the rotating disk (13), and an angle scale line (34) being provided on the side wall of the fixing ring (12).

4. A fiber multifilament tensile property testing twisting device according to claim 3, characterized in that: The fixing mechanism comprises an electric telescopic rod (9) fixedly mounted on the top of the first side plate (2); a mounting groove (10) is provided on the side wall of the first side plate (2); a fixing block (11) is provided inside the mounting groove (10); a telescopic end of the electric telescopic rod (9) penetrates into the inside of the mounting groove (10) and is fixedly connected to the upper end of the fixing block (11).

5. A fiber multifilament tensile property testing twisting device according to claim 4, characterized in that: The pulling mechanism comprises a second pulling seat (15), a pulling groove (4) is provided on the side wall of the second pulling seat (15), a U-shaped block (16) is fixedly connected to the side wall of the second pulling seat (15), a movable frame (18) is horizontally penetrated on the second side plate (19), the left end of the movable frame (18) is sleeved inside the U-shaped block (16), a pressure sensor (17) is fixedly installed on the inner wall of the U-shaped block (16), the movable frame (18) is slidably connected to the second side plate (19), and a hydraulic cylinder (20) is fixedly installed on a side wall of the second side plate (19) away from the second pulling seat (15).

6. A fiber multifilament tensile property testing twisting device according to claim 5, characterized in that: The clamping mechanism comprises two clamping structures, the clamping structures comprising a first hemispherical block (25) and a second hemispherical block (26); two connecting grooves (31) are arranged on the side wall of the first hemispherical block (25) close to the second hemispherical block (26); two connecting blocks (29) are arranged on the side wall of the second hemispherical block (26) close to the first hemispherical block (25); two mounting grooves (28) are arranged on the side wall of the first hemispherical block (25); the two mounting grooves (28) are respectively close to the two connecting grooves (31); the insides of the two mounting grooves (28) are both provided with a clamping piece extending to the inside of the connecting groove (31); and the connecting block (29) is provided with a clamping groove (30) matched with the clamping piece.

7. A fiber multifilament tensile property testing twisting device according to claim 5, characterized in that: The lower side wall of the second pulling seat (15) is fixedly connected with a slider (23), and a laser rangefinder (24) is fixedly installed on the side wall of the slider (23) close to the first pulling seat (3). The upper end of the base plate (1) is provided with a slide groove (21), and a slide rod (22) is horizontally provided inside the slide groove (21). Both ends of the slide rod (22) are fixedly connected to the inner wall of the slide groove (21), and the slider (23) is slidably sleeved on the slide rod (22).

8. A fiber multifilament tensile property testing twisting device according to claim 6, characterized in that: The clamping member comprises a clamping block (33) arranged inside the mounting groove (28); one end of the clamping block (33) is fixedly connected to a spring (32); one end of the spring (32) away from the clamping block (33) is fixedly connected to the inner wall of the mounting groove (28); and one end of the clamping block (33) away from the spring (32) passes through the inner bottom wall of the mounting groove (28).

9. A twisting method for testing the tensile properties of multifilament fibers, characterized in that: The method is applicable to a fiber multifilament tensile property testing twisting device according to any one of claims 1 to 8, and the method comprises the following steps: S1, clamping the fiber multifilament with a clamping mechanism; S2, then fix the clamping mechanism on the inner side of the twisting mechanism and the pulling mechanism respectively; S3, twisting the fiber multifilaments by using a twisting mechanism, and completing the twisting of the fiber multifilaments according to the required number of twisting turns through the reference of the angle reference mechanism.

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