Clamp for gridding cloth tensile test

Abstract

The utility model provides a clamp for gridding cloth tensile test, which comprises an outer shell, guide surfaces are arranged on two sides of the inner part of the outer shell, a first clamping block and a second clamping block are symmetrically arranged in the outer shell, and the first clamping block and the second clamping block are both provided with inclined surfaces matched with the guide surfaces. A lifting driving mechanism for driving the first clamping block and the second clamping block to move up and down is arranged at the top of the outer shell; according to the gridding cloth clamping device, when the lifting driving mechanism drives the first clamping block and the second clamping block to move downwards, the first clamping block and the second clamping block are close to each other to clamp the gridding cloth, the gridding cloth is clamped between the first clamping block and the second clamping block through the cooperation of the first protruding strip and the second groove and the cooperation of the second protruding strip and the first groove, the contact area can be increased, and the clamping efficiency is improved. Meanwhile, the fixing needles penetrate through the gridding cloth and enter the avoiding holes to fix the gridding cloth, the fixing effect on the gridding cloth can be further improved, the gridding cloth is prevented from slipping in the stretching process, and it is guaranteed that the test is conducted smoothly.

Description

Technical Field

[0001] The utility model belongs to the technical field of fiberglass mesh tensile test equipment, and particularly relates to a fixture for fiberglass mesh tensile test. Background Technique

[0002] The fiberglass mesh tensile test is a test method for testing the strength of fabric materials. Its principle is to stretch the fabric under certain conditions, calculate its bearing force and deformation amount, so as to evaluate its strength performance.

[0003] In the prior art, the Chinese utility model patent document with the authorization announcement number of CN219694739U discloses a special fixture for fiberglass mesh tensile test, which uses a pressing plate and a bottom plate to cooperate to press and fix the end of the fiberglass mesh. The surfaces of the pressing plate and the bottom plate are flat and smooth, and it is easy to slip during the stretching process, resulting in the failure of the test.

[0004] Therefore, it is necessary to design a fixture for fiberglass mesh tensile test that can stably clamp the fiberglass mesh, avoid slipping during the stretching process, and ensure the smooth progress of the test to solve the current technical problems. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the utility model provides a fixture for fiberglass mesh tensile test that can stably clamp the fiberglass mesh, avoid slipping during the stretching process, and ensure the smooth progress of the test.

[0006] The technical solution of the utility model is: a fixture for fiberglass mesh tensile test, including an outer shell, both sides inside the outer shell have guiding surfaces, a first clamping block and a second clamping block are symmetrically arranged inside the outer shell, both the first clamping block and the second clamping block have inclined surfaces matching the guiding surfaces, and a lifting driving mechanism for driving the first clamping block and the second clamping block to move up and down is arranged at the top of the outer shell;

[0007] In the middle of one side of the first clamping block close to the second clamping block, a first plane is arranged, and first convex strips and first grooves are alternately arranged on the side surfaces of the first clamping block above and below the first plane;

[0008] On one side of the second clamping block close to the first clamping block, a second plane corresponding to the first plane, a second groove corresponding to the first convex strip, and a second convex strip corresponding to the first groove are arranged;

[0009] Fixing pins are evenly arranged on the second plane, and avoidance holes corresponding to the fixing pins are arranged on the first plane.

[0010] A top plate is fixedly arranged at the top of the outer housing. The lifting drive mechanism has a screw rod rotatably arranged on the top plate. A motor for driving the screw rod to rotate is arranged at the top of the top plate. A connecting seat is slidably connected to the tops of the first clamping block and the second clamping block in the horizontal direction. A nut threadedly connected to the screw rod is fixedly arranged at the top of the connecting seat.

[0011] The connecting seat has an "n"-shaped structure. Connecting plates are fixedly arranged at both ends of the connecting seat. A sliding groove is formed in the connecting plate. Slide columns slidably arranged inside the sliding groove are fixedly arranged at the tops of the first clamping block and the second clamping block. A limiting disc is fixedly arranged at the end of the slide column above the connecting plate.

[0012] A bracket is fixedly arranged at the top of the top plate. A connecting end is fixedly arranged at the top of the bracket.

[0013] Vertical plates are fixedly arranged at the tops of both ends of the first clamping block and the second clamping block. Elastic supports are provided between two relatively corresponding vertical plates between the first clamping block and the second clamping block.

[0014] A guide rod is slidably arranged inside two relatively corresponding vertical plates between the first clamping block and the second clamping block. Limiting plates are fixedly arranged at both ends of the guide rod. A spring is sleeved outside the guide rod between two relatively corresponding vertical plates between the first clamping block and the second clamping block.

[0015] Advantages of the present utility model: In the present utility model, when the lifting drive mechanism drives the first clamping block and the second clamping block to move downward, through the cooperation of the inclined surface and the guiding surface, the first clamping block and the second clamping block approach each other to clamp the mesh cloth. Between the first clamping block and the second clamping block, the mesh cloth is clamped through the cooperation of the first convex strip and the second groove, and the cooperation of the second convex strip and the first groove, which can increase the contact area, enhance the friction force and avoid slipping. At the same time, the mesh cloth is fixed by passing the fixing needle through the mesh cloth and into the avoidance hole, which can further improve the fixing effect on the mesh cloth, avoid the mesh cloth from slipping during the stretching process, and ensure the smooth progress of the test. Description of the Drawings

[0016] Figure 1 It is one of the structural schematic diagrams of the fixture for the mesh cloth stretching test in the present utility model.

[0017] Figure 2 It is one of the structural schematic diagrams of the fixture for the mesh cloth stretching test in the present utility model.

[0018] Figure 3 It is Figure 2 The sectional view at A-A in

[0019] Figure 4 It is Figure 3Partial enlarged view at B in the [Chinese context]. Detailed implementation manners

[0020] Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and does not constitute any limitation to the present utility model and its application or use. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present utility model thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions, and numerical values described in these embodiments should be construed as merely exemplary and not as limitations.

[0021] The "first", "second", and similar terms used in the present utility model do not denote any order, quantity, or importance, but are only used to distinguish different parts. Words such as "comprising" or "including" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. "Upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] As Figures 1 to 4As shown, the fixture for the grid cloth tensile test includes a housing 3. Both sides inside the housing 3 have guiding surfaces 31. A first clamping block 1 and a second clamping block 2 are symmetrically arranged inside the housing 3. Both the first clamping block 1 and the second clamping block 2 have inclined surfaces 15 that match the guiding surfaces 31. A lifting drive mechanism 8 for driving the first clamping block 1 and the second clamping block 2 to move up and down is arranged at the top of the housing 3. When the lifting drive mechanism 8 drives the first clamping block 1 and the second clamping block 2 to move down, through the cooperation of the inclined surface 15 and the guiding surface 31, the first clamping block 1 and the second clamping block 2 approach each other to clamp the grid cloth. In the middle of the side of the first clamping block 1 close to the second clamping block 2, there is a first flat surface 13. First protrusions 11 and first grooves 12 are alternately arranged on the side surfaces of the first clamping block 1 above and below the first flat surface 13. On the side of the second clamping block 2 close to the first clamping block 1, there are a second flat surface 23 corresponding to the first flat surface 13, a second groove 22 corresponding to the first protrusion 11, and a second protrusion 21 corresponding to the first groove 12. Fixed pins 24 are evenly arranged on the second flat surface 23, and avoidance holes 14 corresponding to the fixed pins 24 are arranged on the first flat surface 13. In this embodiment, when the lifting drive mechanism 8 drives the first clamping block 1 and the second clamping block 2 to move down, through the cooperation of the inclined surface 15 and the guiding surface 31, the first clamping block 1 and the second clamping block 2 approach each other to clamp the grid cloth. The first clamping block 1 and the second clamping block 2 cooperate with each other through the first protrusion 11 and the second groove 22, and the second protrusion 12 and the first groove 12 to clamp the grid cloth, which can increase the contact area, enhance the friction force to avoid slipping. At the same time, the fixed pins 24 pass through the grid cloth and enter the inside of the avoidance holes 14 to fix the grid cloth, which can further improve the fixing effect of the grid cloth, avoid the grid cloth from slipping during the stretching process, and ensure the smooth progress of the test.

[0023] In some embodiments, a top plate 4 is fixedly arranged at the top of the housing 3. The lifting drive mechanism 8 has a screw rod 81 rotatably arranged on the top plate 4. A motor 83 for driving the screw rod 81 to rotate is arranged at the top of the top plate 4. A connecting seat 7 is slidably connected to the tops of the first clamping block 1 and the second clamping block 2 in the horizontal direction. A nut 82 threadedly connected to the screw rod 81 is fixedly arranged at the top of the connecting seat 7. The motor 83 drives the screw rod 81 to rotate. The screw rod 81 and the nut 82 cooperate through a threaded structure to drive the connecting seat 7 to drive the first clamping block 1 and the second clamping block 2 to move up and down. When the first clamping block 1 and the second clamping block 2 move down, under the action of the guiding surface 31, the first clamping block 1 and the second clamping block 2 approach each other to clamp the grid cloth. When the first clamping block 1 and the second clamping block 2 move up, the first clamping block 1 and the second clamping block 2 can be separated from each other.

[0024] In some embodiments, such as Figure 1As shown, the connecting seat 7 has an "n"-shaped structure. Both ends of the connecting seat 7 are fixedly provided with connecting plates 71. A sliding groove 72 is formed in the connecting plate 71. Slide columns 73 that are slidably arranged inside the sliding groove 72 are fixedly provided at the tops of the first clamping block 1 and the second clamping block 2. A limiting disk 74 is fixedly provided at the end of the slide column 73 above the connecting plate 71. When the connecting seat 7 moves up and down, the first clamping block 1 and the second clamping block 2 are matched with the sliding groove 72 through the slide columns 73, so that the first clamping block 1 and the second clamping block 2 can slide closer to or away from each other to achieve clamping and releasing. At the same time, due to the limiting effect of the limiting disk 74, the first clamping block 1 and the second clamping block 2 can be pulled up during the upward movement of the connecting seat 7.

[0025] In some embodiments, a support 5 is fixedly provided at the top of the top plate 4, and a connecting end 6 is fixedly provided at the top of the support 5. The connecting end 6 is used for connecting with a tensile test device.

[0026] In some embodiments, as Figure 1 shown, vertical plates 16 are fixedly provided at the tops of both ends of the first clamping block 1 and the second clamping block 2. Elastic supports are provided between the two relatively corresponding vertical plates 16 of the first clamping block 1 and the second clamping block 2; during the downward movement of the connecting seat 7, the first clamping block 1 and the second clamping block 2 are driven to move downward. At this time, the width between the guiding surfaces 31 on both sides inside the outer housing 31 gradually decreases, and the first clamping block 1 and the second clamping block 2 approach each other to clamp the mesh fabric, and the elastic support is compressed;

[0027] During the upward movement of the connecting seat 7, the first clamping block 1 and the second clamping block 2 are pulled up. At this time, the width between the guiding surfaces 31 on both sides inside the outer housing 31 gradually increases, the elastic support resets, and the first clamping block 1 and the second clamping block 2 move away from each other.

[0028] In some embodiments, guide rods 17 are slidably arranged inside the two relatively corresponding vertical plates 16 of the first clamping block 1 and the second clamping block 2. Limiting plates 19 are fixedly provided at both ends of the guide rod 17. A spring 18 is sleeved outside the guide rod 17 between the two relatively corresponding vertical plates 16 of the first clamping block 1 and the second clamping block 2.

[0029] So far, the embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details well known in the art have not been described. Those skilled in the art can clearly understand how to implement the technical solutions disclosed here based on the above description.

[0030] The above-described embodiments merely represent some implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A fixture for mesh cloth tensile test, characterized in that: The invention comprises an outer shell, both sides of the inner part of the outer shell are provided with guide surfaces, a first clamp block and a second clamp block are symmetrically arranged inside the outer shell, the first clamp block and the second clamp block both have inclined surfaces matching the guide surfaces, and a lifting drive mechanism for driving the first clamp block and the second clamp block to move up and down is arranged on the top of the outer shell; A first plane is provided in the middle of one side of the first clamping block close to the second clamping block, and first convex strips and first grooves are alternately provided on the side surfaces of the first clamping block above and below the first plane; A second plane corresponding to the first plane, a second groove corresponding to the first convex strip, and a second convex strip corresponding to the first groove are provided on one side of the second clamping block close to the first clamping block; The second plane is evenly provided with fixing pins, and the first plane is provided with avoidance holes corresponding to the fixing pins.

2. The clamp for mesh cloth tensile test according to claim 1, characterized in that: A top plate is fixedly provided on the top of the outer shell, the lifting drive mechanism has a screw rod rotatably provided on the top plate, a motor for driving the screw rod to rotate is provided on the top of the top plate, a connecting seat is slidably connected to the top of the first clamping block and the second clamping block in a horizontal direction, and a nut threadedly connected to the screw rod is fixedly provided on the top of the connecting seat.

3. The clamp for mesh cloth tensile test according to claim 2, characterized in that: The connecting seat is in an "n"-shaped structure, with connecting plates fixedly provided at both ends of the connecting seat, a sliding groove being provided on the connecting plate, a sliding column slidably provided inside the sliding groove being fixedly provided on the top of the first clamping block and the second clamping block, and a limiting plate being fixedly provided on the end of the sliding column above the connecting plate.

4. The clamp for mesh cloth tensile test according to claim 2, characterized in that: A bracket is fixedly arranged on the top of the top plate, and a connecting end is fixedly arranged on the top of the bracket.

5. The clamp for mesh cloth tensile test according to claim 1, characterized in that: Vertical plates are fixedly arranged on the tops of both ends of the first clamping block and the second clamping block, and elastic support is provided between two vertical plates corresponding to each other between the first clamping block and the second clamping block.

6. The clamp for mesh cloth tensile test according to claim 5, characterized in that: A guide rod is slidably arranged inside the two corresponding vertical plates between the first clamp block and the second clamp block, and limiting plates are fixedly arranged at both ends of the guide rod. A spring is sleeved on the outer side of the guide rod between the two corresponding vertical plates between the first clamp block and the second clamp block.

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