A high-strength synthetic fiber tensile performance testing device

Abstract

The invention discloses a high-strength synthetic fiber tensile performance testing device, which relates to the technical field of tensile performance testing, and comprises a force point adjustment mechanism, a bending test adjustment mechanism, a clamping mechanism, and a bending point replacement mechanism; the force point adjustment mechanism comprises: a sub-bracket, a side plate, a sliding rod I, a short arm, a half gear, a rack, a driven gear, and a stepping motor I; the side plate is fixedly welded to the two ends of the sub-bracket, the sliding rod I is fixedly installed between the side plates, the half gear is fixedly welded to the middle of the sub-bracket, the shaft on the half gear is rotatably installed at one end of the short arm, the short arm is provided with a protruding sliding groove, a rack is slidably installed in the sliding groove, and the rack is meshed with the driven gear; when the invention is in use, in addition to being able to measure the clamping tensile characteristics of conventional balanced force, it can also adjust the force point of the test material during stretching to make the force of the test material unbalanced, thereby measuring the tensile strength of the test material under the unbalanced force point.

Description

Technical Field

[0001] The invention relates to the technical field of tensile performance testing, and in particular to a high-strength synthetic fiber tensile performance testing device. Background Art

[0002] In the process of material analysis, the tensile properties of synthetic fibers are an important parameter to measure their quality and application potential. With the development of science and technology, the types and application fields of synthetic fibers continue to expand, which makes the requirements for their tensile properties higher. Therefore, it is necessary to develop a device that can accurately and efficiently test the tensile properties of synthetic fibers.

[0003] Existing fiber tensile performance testing devices have some problems when testing synthetic fibers. Existing testing devices can usually only perform a single tensile test and cannot meet the needs of studying the performance of fibers under different conditions.

[0004] The present invention is designed to solve the existing technical problems. When in use, in addition to being able to measure the clamping and stretching characteristics of conventional balanced force, the present invention can also adjust the force points on the test material during stretching to make the force on the test material unbalanced, thereby measuring the tensile strength of the test material under the unbalanced force points; the present invention can also clamp the test material on the test baffle and rotate the clamping plates on both sides upward to form a bending angle, and stretch it again, thereby measuring the tensile strength of the test material when bent, and the test baffle can be replaced at the bend to make the sharpness of the contact surface at the bend different, thereby obtaining more comprehensive tensile data. Summary of the invention

[0005] In view of the above technical problems, the present invention provides a high-strength synthetic fiber tensile performance testing device, which can effectively solve the problems in the background technology.

[0006] A high-strength synthetic fiber tensile performance testing device comprises a force point adjustment mechanism, a bending test adjustment mechanism, a clamping mechanism, and a bending point replacement mechanism; the force point adjustment mechanism comprises: a sub-bracket, a side plate, a sliding rod I, a short arm, a half gear, a rack, a driven gear, and a stepper motor I; the side plates are fixedly welded to the two ends of the sub-bracket, the sliding rod I is fixedly installed between the side plates, the half gear is fixedly welded to the middle of the sub-bracket, the shaft on the half gear is rotatably installed at one end of the short arm, the short arm is provided with a protruding slide groove, a rack is slidably installed in the slide groove, the rack is meshed with the driven gear, the shaft of the driven gear is rotatably installed on the extension frame at the other end of the short arm, and the shaft of the driven gear is fixedly connected to the motor shaft of the stepper motor I, and the stepper motor I is fastened to the extension frame on the short arm by bolts.

[0007] Preferably, the bending test adjustment mechanism includes: a slide rod II, a rotating head, a hydraulic cylinder, a connecting rod I, a main bracket, a slider and a driving assembly; the slide rod II is fixedly welded on the rotating head, and the slide rod II is slidingly connected to the circular hole on the short arm, the rotating head is rotatably mounted on the shaft on the main bracket, the cylinder body of the hydraulic cylinder is fixedly mounted on the rotating head, and the piston rod of the hydraulic cylinder is fixedly connected to the short arm; one end of the connecting rod I is rotatably mounted on the shaft of the side extension rod on the rotating head, and the other end is rotatably mounted on the shaft of the slider.

[0008] Preferably, the driving assembly includes: a screw rod, a slide rod III, a top plate, and a stepper motor II; the lower end of the screw rod is rotatably mounted in a circular hole on the main bracket, the upper end of the screw rod is rotatably mounted in a circular hole on the top plate, and the screw rod is threadedly connected to the slider, the upper end of the screw rod is fixedly connected to the motor shaft of the stepper motor II, and the stepper motor II is fixedly mounted on an extension plate on the top plate; the upper end of the slide rod III is welded to the bottom surface of the top plate, the lower end of the slide rod III is welded to the main bracket, and the slide rod III is slidably connected to the slider.

[0009] Preferably, the clamping mechanism includes: a sliding plate, a cylinder, a splint, a connecting rod II, and a test material; the sliding plate is slidably installed in a sliding groove on the sub-bracket, the sliding plate is fixedly connected to the piston rod of the cylinder, and the cylinder body of the side plate sliding rod II is fixedly installed on the sub-bracket; the splint is slidably installed on the sliding rod I, one end of the connecting rod II is rotatably connected to the hinge seat on the splint, and the other end of the connecting rod II is rotatably connected to the hinge seat on the sliding plate; the test material is fixedly placed between the splints.

[0010] Preferably, the bending point replacement mechanism includes: a support frame, an auxiliary frame, a test barrier rod, and a spare barrier rod; the support frame is fastened to both sides of the main frame by bolts, the auxiliary frame is fastened to the back of the main frame by bolts, the test barrier rod is inserted through the round hole on the main frame and passes through the round hole on the auxiliary frame, and the spare barrier rod is inserted into the round hole on the auxiliary frame as a whole.

[0011] Preferably, each of the test barrier rod and the spare barrier rod has a different shape.

[0012] Preferably, the splint is provided with raised stripes.

[0013] Preferably, the short arm is made of nickel alloy.

[0014] The beneficial effects of the present invention compared with the prior art are:

[0015] When the present invention is used, in addition to conventional clamping and stretching, the force point on the test material can be adjusted during stretching to make the force on the test material unbalanced, thereby measuring the tensile strength of the test material under the unbalanced force point.

[0016] The present invention can also clamp the test material on the test stop rod and rotate the clamping plates on both sides upward to form a bending angle, and stretch it again, so as to measure the tensile strength of the test material when bent. The test stop rod can be replaced at the bending point to make the sharpness of the contact surface at the bending point different, thereby obtaining more comprehensive tensile data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an isometric view of the overall structure of the present invention.

[0018] Figure 2 It is a side view of the overall structure of the present invention.

[0019] Figure 3 It is a top view of the overall structure of the present invention.

[0020] Figure 4 This is a first viewing angle diagram of the force point adjustment mechanism of the present invention.

[0021] Figure 5 This is a second viewing angle diagram of the force point adjustment mechanism of the present invention.

[0022] Figure 6 This is a first viewing angle diagram of the bending test adjustment mechanism of the present invention.

[0023] Figure 7 This is a second viewing angle diagram of the bending test adjustment mechanism of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0025] Fig. 9 This is a first viewing angle diagram of the bending point replacement mechanism of the present invention.

[0026] Fig.10 This is a second viewing angle diagram of the bending point replacement mechanism of the present invention.

[0027] 1. Auxiliary bracket; 2. Side plate; 3. Slide bar I; 4. Short arm; 5. Half gear; 6. Rack; 7. Driven gear; 8. Stepper motor I; 9. Slide bar II; 10. Rotating head; 11. Hydraulic cylinder; 12. Connecting rod I; 13. Main bracket; 14. Sliding block; 15. Screw rod; 16. Slide bar III; 17. Top plate; 18. Stepper motor II; 19. Sliding plate; 20. Cylinder; 21. Clamp; 22. Connecting rod II; 23. Test material; 24. Support frame; 25. Auxiliary frame; 26. Test stop rod; 27. Spare stop rod. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further specifically described below by way of embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use. They are only for the convenience of describing the simplified description of the invention patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention patent. In addition, spatially relative terms may be used in the text for the convenience of description, such as "below", "below", "below", "above", "above", etc., to describe the relationship of an element or feature relative to other elements or features as shown in the figure. Spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptors used in the text may also be interpreted accordingly.

[0030] Implementation example Figure 1-Figure 10 As shown, a high-strength synthetic fiber tensile performance testing device includes a force point adjustment mechanism, a bending test adjustment mechanism, a clamping mechanism, and a bending point replacement mechanism;

[0031] In an optional implementation manner of the embodiment of the present invention, as Figure 4 , Figure 5 As shown, the force point adjustment mechanism includes: a sub-bracket 1, a side plate 2, a sliding rod Ⅰ3, a short arm 4, a half gear 5, a rack 6, a driven gear 7, and a stepper motor Ⅰ8; the side plate 2 is fixedly welded to the two ends of the sub-bracket 1, the sliding rod Ⅰ3 is fixedly installed between the side plates 2, the half gear 5 is fixedly welded in the middle of the sub-bracket 1, the shaft on the half gear 5 is rotatably installed at one end of the short arm 4, the short arm 4 is provided with a protruding slide groove, and a rack 6 is slidably installed in the slide groove, the rack 6 is meshed with the driven gear 7, and the shaft of the driven gear 7 is rotatably installed on the extension frame at the other end of the short arm 4, and at the same time, the shaft of the driven gear 7 is fixedly connected to the motor shaft of the stepper motor Ⅰ8, and the stepper motor Ⅰ8 is fastened to the extension frame on the short arm 4 by bolts.

[0032] In an optional implementation manner of the embodiment of the present invention, as Figure 6 , Figure 7As shown, the bending test adjustment mechanism includes: a slide rod II 9, a rotating head 10, a hydraulic cylinder 11, a connecting rod I 12, a main bracket 13, a slider 14 and a driving assembly; the slide rod II 9 is fixedly welded on the rotating head 10, and the slide rod II 9 is slidingly connected to the round hole on the short arm 4, the rotating head 10 is rotatably mounted on the shaft on the main bracket 13, the cylinder body of the hydraulic cylinder 11 is fixedly mounted on the rotating head 10, and the piston rod of the hydraulic cylinder 11 is fixedly connected to the short arm 4; one end of the connecting rod I 12 is rotatably mounted on the shaft of the side extension rod on the rotating head 10, and the other end is rotatably mounted on the shaft of the slider 14.

[0033] In an optional implementation manner of the embodiment of the present invention, as Figure 6 , Figure 7 As shown, the driving assembly includes: a screw rod 15, a slide rod III 16, a top plate 17, and a stepper motor II 18; the lower end of the screw rod 15 is rotatably mounted in a circular hole on the main bracket 13, and the upper end of the screw rod 15 is rotatably mounted in a circular hole on the top plate 17, and the screw rod 15 is threadedly connected to the slider 14, and the upper end of the screw rod 15 is fixedly connected to the motor shaft of the stepper motor II 18, and the stepper motor II 18 is fixedly mounted on an extension plate on the top plate 17; the upper end of the slide rod III 16 is welded to the bottom surface of the top plate 17, and the lower end of the slide rod III 16 is welded to the main bracket 13, and the slide rod III 16 is slidably connected to the slider 14.

[0034] In an optional implementation manner of the embodiment of the present invention, as Figure 8 As shown, the clamping mechanism includes: a sliding plate 19, a cylinder 20, a clamping plate 21, a connecting rod II 22, and a test material 23; the sliding plate 19 is slidably installed in the sliding groove on the sub-bracket 1, the sliding plate 19 is fixedly connected to the piston rod of the cylinder 20, and the cylinder body of the sliding rod II 9 of the side plate 2 is fixedly installed on the sub-bracket 1; the clamping plate 21 is slidably installed on the sliding rod I 3, one end of the connecting rod II 22 is rotatably connected to the hinge seat on the clamping plate 21, and the other end of the connecting rod II 22 is rotatably connected to the hinge seat on the sliding plate 19; the test material 23 is fixedly placed between the clamping plates 21.

[0035] In an optional implementation manner of the embodiment of the present invention, as Fig. 9 , Fig.10 As shown, the bending point replacement mechanism includes: a support frame 24, an auxiliary frame 25, a test baffle rod 26, and a spare baffle rod 27; the support frame 24 is fastened to both sides of the main frame 13 by bolts, the auxiliary frame 25 is fastened to the back of the main frame 13 by bolts, the test baffle rod 26 is inserted through the circular hole on the main frame 13, and passes through the circular hole on the auxiliary frame 25, and the spare baffle rod 27 is inserted into the circular hole on the auxiliary frame 25 as a whole.

[0036] In an optional implementation manner of the embodiment of the present invention, as Fig. 9As shown, each of the test blocking rod 26 and the spare blocking rod 27 has a different shape, so that the bending degree or sharpness of the contact surface with the test material 23 is different, so as to test the strength data of the test material 23 at different contact surfaces.

[0037] In an optional implementation manner of the embodiment of the present invention, as Figure 8 As shown, the clamping plate 21 is provided with raised stripes, so as to make the clamping more stable.

[0038] In an optional implementation manner of the embodiment of the present invention, as Figure 4 As shown, the short arm 4 is made of nickel alloy, has super strength, and can play a good supporting role.

[0039] Working principle: When the present invention is in use, firstly, the two ends of the test material 23 are manually placed between the clamps 21, and then the cylinder 20 is started to drive the sliding plate 19 to slide, and the sliding plate 19 drives the clamps 21 to squeeze each other through the connecting rod Ⅱ 22 to clamp the test material 23, and then a conventional tensile test is performed, and the hydraulic cylinder 11 is started to drive the short arms 4 at both ends to slide on the slide rod Ⅱ 9, so that the test material 23 clamped on the clamps 21 is stretched until it breaks, thereby obtaining the tensile strength data of the test material 23.

[0040] The device can also measure the tensile strength data under the condition of uneven force. Similarly, after the test material 23 is clamped, the stepper motor I8 is started, driving the rack 6 to slide, and the rack 6 drives the half gear 5 to rotate, so that the sub-bracket 1 rotates a certain angle, so that one side of the clamped test material 23 is pulled outward. Even if the force point at the clamping point of the test material 23 is offset and then stretched, the test material 23 will definitely break faster in this case. In this way, the tensile strength of the test material 23 under the conditions of force point offset and different offset degrees is measured.

[0041] The device can also measure the tensile strength data of the test material 23 after bending. Similarly, after the test material 23 is clamped, the test stopper 26 is inserted into the position shown in the figure. The test stopper 26 is located in the middle of the test material 23. Then the stepper motor II 18 is started, driving the screw 15 to rotate, driving the slider 14 to move upward, and the slider 14 drives the rotating head 10 to rotate upward through the connecting rod I 12, thereby driving the clamping mechanism to rotate upward through the slide bar II 9, so that the two ends of the test material 23 are bent upward, and the middle is stuck by the test stopper 26, and then stretched until it breaks, so that the tensile strength of the test material 23 when it is bent can be measured, and the test stopper 26 can also be replaced with a spare stopper 27, so as to change the sharpness of the contact surface of the test stopper 26 and the test material 23, and stretch it again until it breaks, so that the tensile strength data of the contact surface at the bend can be measured. The device can measure the tensile strength of the test material 23 in a variety of different states, and the experimental data is more comprehensive.

Claims

1. A high-strength synthetic fiber tensile performance testing device, characterized in that: It includes a force point adjustment mechanism, a bending test adjustment mechanism, a clamping mechanism, and a bending point replacement mechanism; The force point adjustment mechanism comprises: a sub-bracket (1), a side plate (2), a slide bar I (3), a short arm (4), a half gear (5), a rack (6), a driven gear (7), and a stepper motor I (8); the side plate (2) is fixedly welded to the two ends of the sub-bracket (1), the slide bar I (3) is fixedly installed between the side plates (2), the half gear (5) is fixedly welded to the middle of the sub-bracket (1), the shaft on the half gear (5) is rotatably installed on one end of the short arm (4), the short arm (4) is provided with a protruding slide groove, a rack (6) is slidably installed in the slide groove, the rack (6) is meshed with the driven gear (7), the shaft of the driven gear (7) is rotatably installed on the extension frame at the other end of the short arm (4), and the shaft of the driven gear (7) is fixedly connected to the motor shaft of the stepper motor I (8), and the stepper motor I (8) is fastened to the extension frame on the short arm (4) by bolts; The bending test adjustment mechanism comprises: a slide bar II (9), a rotating head (10), a hydraulic cylinder (11), a connecting rod I (12), a main bracket (13), a slider (14) and a driving assembly; the slide bar II (9) is fixedly welded to the rotating head (10), and the slide bar II (9) is slidably connected to the round hole on the short arm (4); the rotating head (10) is rotatably mounted on the shaft on the main bracket (13); the cylinder body of the hydraulic cylinder (11) is fixedly mounted on the rotating head (10), and the piston rod of the hydraulic cylinder (11) is fixedly connected to the short arm (4); one end of the connecting rod I (12) is rotatably mounted on the shaft of the side extension rod on the rotating head (10), and the other end is rotatably mounted on the shaft of the slider (14); The driving assembly comprises: a screw rod (15), a slide rod III (16), a top plate (17), and a stepper motor II (18); the lower end of the screw rod (15) is rotatably mounted in a circular hole on the main bracket (13), the upper end of the screw rod (15) is rotatably mounted in a circular hole on the top plate (17), the screw rod (15) is threadedly connected to the slider (14), the upper end of the screw rod (15) is fixedly connected to the motor shaft of the stepper motor II (18), and the stepper motor II (18) is fixedly mounted on an extension plate on the top plate (17); the upper end of the slide rod III (16) is welded to the bottom surface of the top plate (17), the lower end of the slide rod III (16) is welded to the main bracket (13), and the slide rod III (16) is slidably connected to the slider (14); The clamping mechanism comprises: a sliding plate (19), a cylinder (20), a clamping plate (21), a connecting rod II (22), and a test material (23); the sliding plate (19) is slidably mounted in a sliding groove on the auxiliary bracket (1), the sliding plate (19) is fixedly connected to the piston rod of the cylinder (20), and the cylinder body of the sliding rod II (9) of the side plate (2) is fixedly mounted on the auxiliary bracket (1); the clamping plate (21) is slidably mounted on the sliding rod I (3), one end of the connecting rod II (22) is rotatably connected to a hinge seat on the clamping plate (21), and the other end of the connecting rod II (22) is rotatably connected to a hinge seat on the sliding plate (19); the test material (23) is fixedly placed between the clamping plates (21); The bending point replacement mechanism comprises: a support frame (24), an auxiliary frame (25), a test blocking rod (26), and a spare blocking rod (27); the support frame (24) is fastened to both sides of the main frame (13) by bolts, the auxiliary frame (25) is fastened to the back of the main frame (13) by bolts, the test blocking rod (26) is inserted through the circular hole on the main frame (13) and passes through the circular hole on the auxiliary frame (25), and the spare blocking rod (27) is inserted into the circular hole on the auxiliary frame (25) as a whole.

2. A high-strength synthetic fiber tensile performance testing device according to claim 1, characterized in that: Each of the test barrier rod (26) and the spare barrier rod (27) has a different shape.

3. A high-strength synthetic fiber tensile performance testing device according to claim 1, characterized in that: The clamping plate (21) is provided with raised stripes.

4. A high-strength synthetic fiber tensile performance testing device according to claim 1, characterized in that: The short arm (4) is made of nickel alloy.

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