Fixture for testing fiber tensile property of universal testing machine

Abstract

The utility model relates to the technical field of fiber tensile testing, in particular to a fiber tensile property testing clamp of a universal testing machine. Comprising two clamp bodies which are longitudinally and correspondingly arranged. A fixing module and a surrounding module are arranged on the clamp body; the fixing module and the surrounding module are matched with the fixing module and the surrounding module on the other clamp body in the longitudinal direction in position. The fixing module comprises a fixing groove; a U-shaped groove is formed in the surrounding module, the U-shaped groove is divided into a transverse stretching groove and a longitudinal stretching groove from outside to inside, and the transverse stretching groove is of a structure matched with the transverse position of the fixing groove, so that fibers can be stably and rapidly fixed, the tensile property can be tested, meanwhile, shearing force is counteracted in the stretching process, and the tensile strength of the fibers is improved. And the fiber can be fractured in a calibrated range, so that the test result is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of fiber tensile testing, in particular to a fiber tensile performance testing fixture of a universal testing machine. Background Art

[0002] Fiber strength is an important indicator for evaluating fiber physical properties, and fiber strength testing plays an important role in evaluating fiber performance. Since the fiber surface is smooth, it cannot be clamped directly during tensile performance testing. In addition, high-performance fibers have high toughness and require high-quality fixtures at both ends. Otherwise, the fiber will fall off before it breaks, making tensile performance testing more difficult.

[0003] Because for ordinary clamps, fiber-woven products cannot be broken within the calibrated range during the stretching process. At other breaking points, the fiber's breaking strength is likely to be lower than the fiber's own strength. Utility Model Content

[0004] The purpose of the utility model is to provide a universal testing machine fiber tensile performance test fixture to address the defects in the prior art, so that the fiber can be fixed firmly and quickly and the tensile performance can be tested. At the same time, the shear force can be offset during the stretching process, and the fiber can be broken within a calibrated range, thereby making the test result more accurate.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a universal testing machine fiber tensile performance test fixture, including two fixture bodies arranged correspondingly in the longitudinal direction; a fixing module and a surrounding module are arranged on the fixture body; the fixing module and the surrounding module are adapted to the longitudinal positions of the fixing module and the surrounding module on the other fixture body; the fixing module includes a fixing groove; a U-shaped groove is arranged on the surrounding module, and the U-shaped groove is divided into a transverse stretching groove and a longitudinal stretching groove from the outside to the inside, and the transverse stretching groove is adapted to the transverse position of the fixing groove.

[0006] Furthermore, the fixing module also includes a pressing sheet and a screw rod cooperating with the pressing sheet.

[0007] Furthermore, the fixing module is also provided with an auxiliary fixing rod to cooperate with and fix the pressing sheet.

[0008] Furthermore, the fixing groove and the pressing sheet are both rectangular structures.

[0009] Furthermore, a connection and installation surface is provided on the surface of the fixture body away from the test area.

[0010] Furthermore, the two connecting and mounting surfaces of the clamp body which are arranged correspondingly in the longitudinal direction are respectively connected to the tension mechanism and the fixing mechanism.

[0011] Furthermore, a recessed area is provided below the fixing module on the fixture body.

[0012] The invention comprises two clamp bodies which are arranged correspondingly in the longitudinal direction; a fixing module and a surrounding module are arranged on the clamp body; the fixing module and the surrounding module are adapted to the longitudinal positions of the fixing module and the surrounding module on the other clamp body; the fixing module comprises a fixing groove; a U-shaped groove is arranged on the surrounding module, and the U-shaped groove is divided into a transverse stretching groove and a longitudinal stretching groove from the outside to the inside, and the transverse stretching groove is adapted to the transverse position of the fixing groove, so as to achieve the effect of firmly and quickly fixing the fiber and testing the tensile performance, and at the same time, the shear force is offset during the stretching process, and the fiber can be broken within a calibrated range, thereby making the test result more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of a universal testing machine fiber tensile performance test fixture of the utility model;

[0015] Figure 2 For the utility model Figure 1 A partial enlarged view of the location;

[0016] Figure 3 This is a front view of a universal testing machine fiber tensile performance test fixture of the utility model;

[0017] Figure 4 It is a left view of a universal testing machine fiber tensile performance test fixture of the utility model;

[0018] Reference numerals:

[0019] The clamp body 1, the fixing module 2, the fixing groove 2-1, the pressing sheet 2-2, the screw rod 2-3, the surrounding module 3, the U-shaped groove 3-1, the transverse stretching groove 3-1-1, the longitudinal stretching groove 3-1-2, and the connecting and mounting surface 4. DETAILED DESCRIPTION

[0020] 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 of the embodiments.

[0021] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0022] A universal testing machine fiber tensile properties test fixture, such as Figure 1 , 2 As shown, it includes two clamp bodies 1 arranged correspondingly in the longitudinal direction; a fixing module 2 and a surrounding module 3 are arranged on the clamp body 1; the fixing module 2 and the surrounding module 3 are adapted to the longitudinal positions of the fixing module 2 and the surrounding module 3 on the other clamp body 1; the fixing module 2 includes a fixing groove 2-1; a U-shaped groove 3-1 is arranged on the surrounding module 3, and the U-shaped groove 3-1 is divided into a transverse stretching groove 3-1-1 and a longitudinal stretching groove 3-1-2 from the outside to the inside, and the transverse stretching groove 3-1-1 is adapted to the transverse position of the fixing groove 2-1.

[0023] Specifically, the invention comprises two clamp bodies 1 arranged correspondingly in the longitudinal direction; the clamp body 1 is provided with a fixing module 2 and a surrounding module 3; the fixing module 2 and the surrounding module 3 are adapted to the longitudinal positions of the fixing module 2 and the surrounding module 3 on the other clamp body 1; the fixing module 2 comprises a fixing groove 2-1; the surrounding module 3 is provided with a U-shaped groove 3-1, and the U-shaped groove 3-1 is divided into a transverse stretching groove 3-1-1 and a longitudinal stretching groove 3-1-2 from the outside to the inside, and the transverse stretching groove 3-1-1 is adapted to the transverse position of the fixing groove 2-1, so as to firstly pass the fiber through the fixing module 2 of the clamp body 1 located above in the longitudinal direction in a direction away from the surrounding module 3, and then stretch the fiber from the fixing groove 2-1 of the fixing module 2 to the transverse stretching groove 3-1-2 of the U-shaped groove 3-1 of the surrounding module 3. 1 part forms a horizontal straight state, and then further surrounds the fiber to the longitudinal stretching groove 3-1-2 position of the U-shaped groove 3-1 from the outer side of the surrounding module 3 away from the fixing module 2, so that the fiber direction is downward, thereby further stretched to the longitudinal stretching groove 3-1-2 position of the U-shaped groove 3-1 of the surrounding module 3 of the clamp body 1 located at the bottom in the longitudinal direction, and forms a vertical straight state, then surrounds along the surrounding module 3 to the transverse stretching groove 3-1-1 position of the U-shaped groove 3-1, and further stretches to the fixing groove 2-1 of its corresponding fixing module 2. The upper and lower fixing modules 2 fix the fiber, thereby completing the fixing preparation for the fiber tensile test. The two longitudinally corresponding clamp bodies 1 are stretched in the longitudinal direction to complete the test of the tensile performance of the fiber, and the shear force is offset during the stretching process. The fiber can be broken within the calibrated range, so that the test result is more accurate.

[0024] As a preferred embodiment of the above, Figure 1 , 2 As shown, the fixing module 2 also includes a pressing sheet 2-2 and a screw rod 2-3 that cooperates with the pressing sheet 2-2.

[0025] Specifically, the fixing module 2 also includes a pressing plate 2-2 and a screw rod 2-3 that cooperates with the pressing plate 2-2, so as to quickly rotate the screw rod 2-3 to drive the pressing plate 2-2 to fix the fiber firmly and quickly in the fixing groove 2-1, and make the stretched state of the fiber smoother.

[0026] As a preferred embodiment of the above, Figure 1 , 2 As shown, the fixing module 2 is also provided with an auxiliary fixing rod to cooperate with and fix the pressing sheet 2 - 2.

[0027] Specifically, the fixing module 2 is also provided with an auxiliary fixing rod to cooperate with the structure of fixing the pressing plate 2-2, so that the pressing plate 2-2 can more comprehensively apply a fixing force to the fiber, thereby fixing the fiber more firmly and quickly, and further making the stretched state of the fiber smoother.

[0028] As a preferred embodiment of the above, Figure 1 , 2 As shown, the fixing groove 2-1 and the pressing plate 2-2 are both rectangular structures.

[0029] Specifically, the fixing groove 2-1 and the pressing plate 2-2 are both rectangular structures, so as to further adapt to the fixing action of the fiber and ensure the flatness of the fiber in the stretched state.

[0030] As a preferred embodiment of the above, Figure 1 , 3 As shown, a connection and mounting surface 4 is provided on the surface of the fixture body 1 away from the test area.

[0031] As a preferred embodiment of the above, Figure 1 , 3 As shown, the two connecting and mounting surfaces 4 of the clamp body 1 arranged correspondingly in the longitudinal direction are respectively connected to the tension mechanism and the fixing mechanism.

[0032] Specifically, the tension mechanism and the fixing mechanism are respectively connected through the two connecting and mounting surfaces 4 of the clamp body 1 which are longitudinally arranged correspondingly, so that the two corresponding clamp bodies 1 above and below do not need to be produced separately, thereby further reducing the overall cost of the device and improving the flexibility of the device when used.

[0033] As a preferred embodiment of the above, Figure 1 , 4 As shown, a recessed area is provided below the fixing module 2 on the fixture body 1 .

[0034] Specifically, the structure of providing a concave area below the fixing module 2 on the clamp body 1 helps to further reduce the overall weight and cost of the device while the fixing module 2 performs fiber entry and fixing actions.

[0035] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A universal testing machine fiber tensile performance test fixture, characterized by: It comprises two clamp bodies (1) which are arranged longitudinally and correspondingly; The clamp body (1) is provided with a fixing module (2) and a surrounding module (3); The fixing module (2) and the surrounding module (3) are adapted to the longitudinal positions of the fixing module (2) and the surrounding module (3) on the other fixture body (1); The fixing module (2) comprises a fixing groove (2-1); The surrounding module (3) is provided with a U-shaped groove (3-1), and the U-shaped groove (3-1) is divided into a transverse stretching groove (3-1-1) and a longitudinal stretching groove (3-1-2) from the outside to the inside, and the transverse stretching groove (3-1-1) is adapted to the transverse position of the fixing groove (2-1).

2. The universal testing machine fiber tensile performance test fixture according to claim 1, characterized in that: The fixing module (2) also comprises a pressing sheet (2-2) and a screw rod (2-3) that cooperates with the pressing sheet (2-2).

3. The universal testing machine fiber tensile performance test fixture according to claim 2, characterized in that: The fixing module (2) is also provided with an auxiliary fixing rod for cooperating with and fixing the pressing sheet (2-2).

4. The universal testing machine fiber tensile performance test fixture according to claim 3, characterized in that: The fixing groove (2-1) and the pressing sheet (2-2) are both rectangular structures.

5. The universal testing machine fiber tensile performance test fixture according to claim 4, characterized in that: A connection and installation surface (4) is provided on the surface of the fixture body (1) away from the test area.

6. The universal testing machine fiber tensile performance test fixture according to claim 5, characterized in that: The connection and installation surfaces (4) of the two longitudinally correspondingly arranged clamp bodies (1) are respectively connected to a tension mechanism and a fixing mechanism.

7. The universal testing machine fiber tensile performance test fixture according to claim 1, characterized in that: A recessed area is provided below the fixing module (2) on the clamp body (1).

Images