Protective device for tool clamp of tensile testing machine

Abstract

The utility model discloses a protective device for a tool clamp of a tensile testing machine, and belongs to the technical field of clamp protective devices. In order to solve the problem that an existing product is complex in structure, according to the technical scheme, the clamp comprises a clamp body, a clamping block is arranged on the clamp body, the clamp body and the clamping block are connected through a protection mechanism, the protection mechanism comprises a base rotationally connected to the interior of the clamp body, and a spiral column is fixedly connected to the upper end of the base. Through the arrangement of the protection mechanism, when an object in the clamp falls off accidentally, the clamping block can rapidly restore to the original position, the protection mechanism can play a good buffering effect on the object, the collision strength between the clamping block and the clamp is reduced, the whole clamp is well protected, meanwhile, the abrasion of the clamp can be reduced, and the service life of the clamp is prolonged. And secondly, by arranging a buffering mechanism, collision between the two clamping blocks can be reduced, and the good protection effect on the clamping blocks is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp protection devices, in particular to a tooling clamp protection device for a tensile testing machine. Background Art

[0002] Tensile testing machine, also called material tensile testing machine and universal tensile strength testing machine, is a new generation of mechanical testing equipment integrating computer control, automatic measurement, data acquisition, screen display and test result processing. It integrates electro-hydraulic servo automatic control, automatic measurement, data acquisition, screen display and test result processing. It uses a cylinder-down main engine as a platform and is equipped with a precision oil pump, electro-hydraulic servo valve and PC servo controller to achieve multi-channel closed-loop control and complete the test process with full automatic control and automatic measurement. It has the characteristics of good professionalism, high reliability and easy upgrade, and can be continuously enriched and improved with the development of testing machine measurement and control technology and changes in test standards.

[0003] During the use of the existing tensile testing machine, a clamp is generally used to clamp and fix the object to be tensile tested. During the test, if the object accidentally shifts and falls, the clamp will be hit hard, and without good buffering, it may cause wear and tear on itself, reducing the service life of the clamp.

[0004] Therefore, those skilled in the art provide a tooling fixture protection device for a tensile testing machine to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a protective device for a tooling clamp of a tensile testing machine. By setting a protective mechanism, when an object in the clamp accidentally falls, the clamping block will quickly return to its original position, and the protective mechanism will have a good buffering effect on it, reducing the collision force between the clamping block and the clamp, and having a good protective effect on the clamp as a whole. At the same time, it can also reduce the wear of the clamp itself and increase its service life. Secondly, by setting a buffering mechanism, the collision between the two clamping blocks can be reduced, and the clamping block itself can be well protected, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A protection device for a tooling fixture of a tensile testing machine comprises a fixture body, a clamping block is arranged on the fixture body, and the two are connected by a protection mechanism, the protection mechanism comprises a base rotatably connected to the inside of the fixture body, a spiral column is fixedly connected to the upper end of the base, a spiral groove column is spirally connected to the spiral column, a second spring is rotatably connected to the upper end of the spiral column, the upper end of the second spring is rotatably connected to the inner wall of the upper end of the spiral groove column, a connecting column is fixedly connected to the outer wall of the spiral groove column, and the connecting column penetrates to the outside of the fixture body and is fixedly connected to the clamping block.

[0008] As a further solution of the utility model, the protection mechanism also includes a circular ring fixedly connected to the inside of the clamp body, a limiting plate fixedly connected to the inner wall of the circular ring, a connecting plate fixedly connected to the outer wall of the base, and a movable plate connected to the connecting plate via a spring shaft.

[0009] As a further solution of the utility model, a buffer mechanism is arranged on the clamping block, and the buffer mechanism comprises a sliding block slidably connected to the clamping block, an embedded column is fixedly connected to the sliding block, and the embedded column penetrates into the interior of the clamping block.

[0010] As a further solution of the utility model, the buffer mechanism also includes a third spring sleeved on the embedded column, and the third spring is located outside the clamping block.

[0011] As a further solution of the utility model, two groups of buffer mechanisms are provided on one of the clamping blocks, which are symmetrically distributed on the clamping block.

[0012] As a further solution of the utility model, the clamping block is slidably connected to a squeezing block, and the squeezing block is of trapezoidal design.

[0013] As a further solution of the utility model, a connecting piece is fixedly connected to the outer wall of the clamp body, a rotating piece is provided on the clamp body, a moving rod is slidably connected to the clamp body, a groove is provided on the moving rod, which engages with the rotating piece through the groove, the moving rod is in contact with the clamping block, and a first spring is sleeved on the moving rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By setting up a protective mechanism, when an item in the clamp accidentally falls, the clamping block will quickly return to its original position, and the protective mechanism will have a good buffering effect, reducing the collision force between the clamping block and the clamp, and having a good protective effect on the clamp as a whole. At the same time, it can also reduce the wear of the clamp itself and increase its service life. Secondly, by setting up a buffering mechanism, the collision between the two clamping blocks can be reduced, and a good protective effect can be provided to the clamping block itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the tooling fixture protection device of the tensile testing machine;

[0017] Figure 2 for Figure 1 A schematic diagram of a cross-sectional structure of a fixture body;

[0018] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the protection mechanism;

[0019] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A;

[0020] Figure 5 for Figure 3 Schematic diagram of the explosion structure;

[0021] Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure at the clamping block.

[0022] In the figure: 1. clamp body; 2. connecting member; 3. rotating member; 4. moving rod; 5. clamping block; 6. first spring; 7. spiral groove column; 8. second spring; 9. spiral column; 10. base; 11. connecting plate; 12. spring shaft; 13. movable plate; 14. circular ring; 15. limiting plate; 16. connecting column; 17. sliding block; 18. embedded column; 19. third spring; 20. extrusion block. DETAILED DESCRIPTION

[0023] See also Figures 1 to 6 In the embodiment of the utility model, the protection device for the tooling fixture of the tensile testing machine includes a fixture body 1 fixedly connected to a connecting piece 2, through which the fixture body 1 can be installed on the tensile testing machine, a rotating piece 3 is rotatably connected to the fixture body 1, a moving rod 4 is slidably connected to the fixture body 1, and a first spring 6 is sleeved on the moving rod 4. Two clamping blocks 5 are arranged on the fixture body 1, and objects to be tested are placed between the two clamping blocks 5. By rotating the rotating piece 3, the clamping block 5 will be driven to move through the moving rod 4, which is convenient for placing objects, and the first spring 6 is used to reset the clamping block 5.

[0024] The inside of the clamp body 1 is rotatably connected to the base 10, and the upper end of the base 10 is fixedly connected to a spiral column 9, and the spiral column 9 is spirally connected to a spiral groove column 7. When the spiral groove column 7 moves up and down, it will push the spiral column 9 to rotate through the base 10, and convert the pressure on the spiral groove column 7 into centripetal force and release it, which has a good buffering effect. A second spring 8 is rotatably connected between the spiral groove column 7 and the spiral column 9, which also has a good buffering effect and protects the clamp.

[0025] A connecting plate 11 is fixed on the outer wall of the base 10, and a movable plate 13 is fixedly connected to the connecting plate 11 through a spring shaft 12. The movable plate 13 can rotate through the spring shaft 12 when squeezed, and the spring shaft 12 can further buffer the centripetal force received, thereby improving the buffering performance and the protection effect. A circular ring 14 is fixedly connected to the inside of the clamp body 1, and a limiting plate 15 is fixedly connected to the inner wall of the circular ring 14. The limiting plate 15 is used to squeeze the movable plate 13, and the spring shaft 12 can automatically return to its original position. For the specific working principle, see the public patent: CN212359452U.

[0026] A connecting column 16 is fixedly connected to the outer wall of the spiral groove column 7. The connecting column 16 passes through the clamp body 1 and is connected to the clamp block 5. A groove is provided on the clamp body 1. The connecting column 16 can move along the groove. When the clamp block 5 moves, the spiral groove column 7 can be driven to move synchronously through the connecting column 16.

[0027] One end of the clamping block 5 is slidably connected to a sliding block 17, and an embedded column 18 is fixedly connected to the sliding block 17. The embedded column 18 penetrates into the interior of the clamping block 5, and a third spring 19 is sleeved on the embedded column 18. When the sliding block 17 drives the embedded column 18 to move, the third spring 19 will be squeezed. An extrusion block 20 is slidably connected to the clamping block 5, and the extrusion block 20 is trapezoidal in design. When the extrusion block 20 is squeezed and moved, it will push the two sliding blocks 17 to move. When the two clamping blocks 5 are suddenly and quickly closed, it can play a good buffering and protection effect.

[0028] The elastic force of the first spring 6 is much greater than the elastic force of the second spring 8 and the third spring 19 .

[0029] The working principle of the utility model is as follows: when an object is accidentally dropped during the experiment, the two clamping blocks 5 will move downward quickly. When the clamping blocks 5 move downward, the spiral groove column 7 will be driven to move through the connecting column 16. When the spiral groove column 7 moves, on the one hand, it will squeeze the second spring 8, and the second spring 8 will generate a buffering force, which has a good buffering effect on the fast-moving clamping block 5 and a good protective effect on the entire clamp body 1. On the other hand, it will push the spiral column 9 to rotate based on the base 10, converting the pressure into centripetal force dispersion. At the same time, when the base 10 rotates, it will drive the connecting plate 11 and the spring 8 to move. The rotating shaft 12 and the movable plate 13 rotate. When the movable plate 13 rotates and is squeezed by the limit plate 15, the spring rotating shaft 12 will further buffer the centripetal force, reduce the impact of the movement of the clamping block 5 on the clamp body 1, and have a good protective effect. When the two clamping blocks 5 are about to contact, the extrusion block 20 will be pushed to move toward the inside of the clamping block 5. When the extrusion block 20 moves, it will push the sliding block 17 to move, so that the sliding block 17 squeezes the third spring 19. The third spring 19 has a good buffering effect, reduces the impact when the two clamping blocks 5 contact, has a good protective effect on the clamping block 5, and reduces its own loss.

[0030] What is described above is only a preferred specific implementation manner 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tooling fixture protection device for a tensile testing machine, comprising a fixture body (1), characterized in that: A clamping block (5) is provided on the clamp body (1), and the two are connected by a protective mechanism, the protective mechanism comprising a base (10) rotatably connected to the inside of the clamp body (1), the upper end of the base (10) is fixedly connected to a spiral column (9), the spiral column (9) is spirally connected to a spiral groove column (7), the upper end of the spiral column (9) is rotatably connected to a second spring (8), the upper end of the second spring (8) is rotatably connected to the inner wall of the upper end of the spiral groove column (7), the outer wall of the spiral groove column (7) is fixedly connected to a connecting column (16), the connecting column (16) passes through the outside of the clamp body (1) and is fixedly connected to the clamping block (5).

2. The protection device for the fixture of the tensile testing machine according to claim 1, characterized in that: The protection mechanism also includes a circular ring (14) fixedly connected to the inside of the clamp body (1), a limiting plate (15) fixedly connected to the inner wall of the circular ring (14), a connecting plate (11) fixedly connected to the outer wall of the base (10), and a movable plate (13) connected to the connecting plate (11) via a spring shaft (12).

3. The protection device for the tooling fixture of the tensile testing machine according to claim 1, characterized in that: The clamping block (5) is provided with a buffer mechanism, which comprises a sliding block (17) slidably connected to the clamping block (5), an embedded column (18) is fixedly connected to the sliding block (17), and the embedded column (18) penetrates into the interior of the clamping block (5).

4. The protection device for the tooling fixture of the tensile testing machine according to claim 3 is characterized in that: The buffer mechanism further comprises a third spring (19) sleeved on the embedded column (18), and the third spring (19) is located outside the clamping block (5).

5. The protection device for the fixture of the tensile testing machine according to claim 4, characterized in that: One of the clamping blocks (5) is provided with two groups of buffer mechanisms, which are symmetrically distributed on the clamping block (5).

6. The protection device for the fixture of the tensile testing machine according to claim 5, characterized in that: The clamping block (5) is slidably connected to a squeezing block (20), and the squeezing block (20) is of trapezoidal design.

7. The protection device for the fixture of the tensile testing machine according to claim 1, characterized in that: A connecting piece (2) is fixedly connected to the outer wall of the clamp body (1), a rotating piece (3) is arranged on the clamp body (1), a moving rod (4) is slidably connected to the clamp body (1), a groove is provided on the moving rod (4), the moving rod (4) is engaged with the rotating piece (3) through the groove, the moving rod (4) is in contact with the clamping block (5), and a first spring (6) is sleeved on the moving rod (4).

Images