Fixing mechanism of impact testing machine

Abstract

The utility model relates to the technical field of impact testing machines, in particular to a fixing mechanism of an impact testing machine, which comprises a base, a fixed clamping block, a movable clamping block, a driving device and an elastic cushion block, the fixed clamping block is fixedly mounted on the base, the movable clamping block is slidably mounted on the base, the driving device is fixedly mounted on the base, and the elastic cushion block is fixedly mounted on the base. One end of the driving device is rotationally connected with the movable clamping block, the elastic cushion blocks are connected to the fixed clamping block and the movable clamping block in an inserted and pulled mode, the elastic cushion blocks are arranged on the opposite side walls of the fixed clamping block and the movable clamping block, and the two sets of elastic cushion blocks are oppositely arranged. The movable clamping block can slide on the base and is matched with the fixed clamping block, so that the fixing mechanism is suitable for fixing test pieces of different models; elastic cushion blocks are connected to the fixed clamping blocks and the movable clamping blocks in an inserting and pulling manner, so that the clamping mechanism can be used for clamping and fixing the film test piece, and firm fixation of the film test piece is ensured; when the solid test piece needs to be fixed, the elastic cushion block can be taken down.

Description

Technical Field

[0001] The utility model relates to the technical field of impact testing machines, in particular to a fixing mechanism of an impact testing machine. Background Art

[0002] The pendulum impact tester is a type of impact tester. It is used to measure the strength and toughness of materials under impact loads. It is widely used in the determination of the impact properties of materials such as metals, plastics, rubber, glass, films, paper, and composite films. When conducting an impact test, the specimen needs to be fixed on the workbench. Usually, a film impact tester requires a specific fixing structure to fix the film so that the film is firmly fixed. The current agreed fixing mechanism cannot be used to fix solid specimens and film specimens for impact tests at the same time, which limits the application scope of the same impact tester. Summary of the invention

[0003] In order to overcome the technical problem that the fixing mechanism of the same impact testing machine cannot be used to fix both the solid test piece and the thin film test piece, the utility model provides a fixing mechanism of the impact testing machine.

[0004] The fixing mechanism of an impact testing machine provided by the utility model adopts the following technical solution:

[0005] A fixing mechanism of an impact testing machine comprises a base, a fixed clamping block, a movable clamping block, a driving device and an elastic pad, wherein the fixed clamping block is fixedly mounted on the base, the movable clamping block is slidably mounted on the base, the fixed clamping block is arranged on one side of the movable clamping block, the driving device is arranged on the other side of the movable clamping block, the driving device is fixedly mounted on the base, one end of the driving device is rotatably connected to the movable clamping block, the elastic pad is pluggably connected to the fixed clamping block and the movable clamping block, the elastic pad is arranged on the opposite side walls of the fixed clamping block and the movable clamping block, and two groups of the elastic pads are arranged opposite to each other.

[0006] By adopting the above technical solution, by setting a fixed clamp block and a movable clamp block, wherein the movable clamp block can slide on the base, the fixing mechanism can be suitable for fixing specimens of different types; elastic pads are plugged in and out of the fixed clamp block and the movable clamp block, so that the clamping mechanism can be used to clamp and fix the thin film specimen, ensuring that the thin film specimen is firmly fixed; when used to fix solid specimens, the elastic pads can be removed.

[0007] Preferably, the elastic pad block includes a filling block and a contact pad block, the cross-sectional shape of the filling block is a trapezoid, the filling block is plugged in and out to connect the fixed clamp block and the movable clamp block, the short side of the filling block is fixedly connected to the contact pad block, and the contact pad block is abutted against the opposite side walls of the fixed clamp block and the movable clamp block.

[0008] Preferably, the fixed clamping block and the movable clamping block are provided with slots, and the slots are adapted to the filling blocks.

[0009] By adopting the above technical solution, by setting the cross-sectional shape of the filling block to be a trapezoid, that is, the elastic pad block is plugged in and connected to the fixed clamp block and the movable clamp block with a structure that is wide inside and narrow outside, it can effectively prevent the elastic pad block from slipping out of the slots on the fixed clamp block and the movable clamp block.

[0010] Preferably, the movable clamping block is a U-shaped block.

[0011] Preferably, the driving device includes a support, a screw and a handle, the support is fixedly arranged on the base, the screw is sleeved inside the support, the screw is threadedly connected to the support, one end of the screw is bearing-connected to the middle part of the movable clamp, and the other end of the screw is fixedly mounted with a handle.

[0012] Preferably, the opposing surfaces of the two groups of contact pads are provided with wavy concave-convex structures.

[0013] By adopting the above technical solution and arranging the wavy concave-convex structure on the opposite surface of the contact pad, the fixing mechanism can use the elasticity of the elastic pad to firmly clamp the thin film specimen when clamping and fixing the thin film specimen.

[0014] Preferably, a slide rail is fixedly provided on the base, and the slide rail is arranged along the axial direction of the screw rod. A groove is provided at the bottom of the movable clamping block, and the groove is adapted to the slide rail.

[0015] By adopting the above technical solution, by arranging a slide rail on the base and opening a groove compatible with the sliding at the bottom of the movable clamp block, the movable clamp block can slide along the slide rail to avoid the movable clamp block and the fixed clamp block from being misaligned.

[0016] In summary, the utility model has the following beneficial effects:

[0017] 1. The utility model provides a fixing mechanism for an impact testing machine, which is provided with a fixed clamp block and a movable clamp block, wherein the movable clamp block can slide on a base, and can adjust the distance between the movable clamp block and the fixed clamp block, so that the fixing mechanism can be suitable for fixing specimens of different types; elastic pads are plugged in and out and connected to the fixed clamp block and the movable clamp block, so that the clamping mechanism can be used to clamp and fix the thin film specimen, ensuring that the thin film specimen is firmly fixed; when used to fix a solid specimen, the elastic pad can be removed.

[0018] 2. The utility model is a fixing mechanism of an impact testing machine. By setting the cross-sectional shape of the filling block to be trapezoidal, that is, the elastic pad block is plugged in and connected to the fixed clamp block and the movable clamp block with a structure that is wide inside and narrow outside, which can effectively prevent the elastic pad block from slipping out of the slots on the fixed clamp block and the movable clamp block; a wavy concave-convex structure is arranged on the opposite surface of the contact pad block, so that the fixing mechanism can use the elasticity of the elastic pad block to clamp the thin film specimen firmly when clamping the thin film specimen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation of the fixing mechanism of the impact testing machine;

[0020] Figure 2 is a schematic diagram of a fixing mechanism of an impact testing machine;

[0021] Figure 3 is a schematic diagram of an elastic pad;

[0022] Figure 4 A schematic diagram of a fixing mechanism of an impact testing machine for fixing a thin film specimen;

[0023] Figure 5 Schematic diagram of the fixing mechanism of the impact testing machine to fix the solid specimen.

[0024] Explanation of the reference numerals: 1. base; 11. slide rail; 2. fixed clamp; 3. movable clamp; 31. groove; 4. driving device; 41. support; 42. screw; 43. handle; 5. elastic pad; 51. filling block; 52. contact pad; 6. slot. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-5 The utility model is described in further detail.

[0026] This embodiment discloses a fixing mechanism of an impact testing machine. Figure 1-Figure 5, including a base 1, a fixed clamping block 2, a movable clamping block 3, a driving device 4 and an elastic pad 5, the base 1 is fixed on the workbench of the testing machine, the fixed clamping block 2 is fixedly installed on the upper part of the base 1, the fixed clamping block 2 is provided with two groups, the movable clamping block 3 is slidably installed on the base 1, the movable clamping block 3 is a U-shaped block, the two vertical plates of the movable clamping block 3 are overlapped with the fixed clamping block 2, a slide rail 11 is fixedly provided on the base 1, the slide rail 11 is provided along the length direction of the base 1, a groove 31 is provided at the bottom of the movable clamping block 3, the groove 31 is adapted to the slide rail 11, that is, the movable clamping block 3 can slide along the slide rail 11 on the base 1 to approach and move away from the fixed clamping block 2, and cooperates with the fixed clamping block 2 to realize the clamping and loosening of the specimen; the fixed clamping block 2 is arranged on one side of the movable clamping block 3, and the driving device 4 is arranged on the other side of the movable clamping block 3, that is, the fixed clamping block 2, the movable clamping block 3 and the driving device 4 are arranged in sequence on the base 1, the driving device 4 is fixedly installed on the upper part of the base 1, and one end bearing of the driving device 4 is connected to the middle part of the movable clamping block 3, and a slot 6 is provided on the fixed clamping block 2 and the movable clamping block 3, and the slot 6 is vertically provided on the opposite side walls of the fixed clamping block 2 and the movable clamping block 3, and the cross-sectional shape of the slot 6 is wide inside and narrow outside, and the slot 6 is adapted to the elastic pad 5, and the elastic pad 5 is plugged and fixed in the slot 6.

[0027] Among them, Figure 1-Figure 5 As shown, the elastic pad 5 includes a filling block 51 and a contact pad 52. The cross-sectional shape of the filling block 51 is a trapezoid. The filling block 51 is plugged and fixed in the slot 6. The elastic pad 5 is plugged and connected to the fixed clamp block 2 and the movable clamp block 3, and has a wide inner and narrow outer structure, which can effectively prevent the elastic pad 5 from slipping out of the slot 6 on the fixed clamp block 2 and the movable clamp block 3. The contact pad 52 is abutted against the opposite side walls of the fixed clamp block 2 and the movable clamp block 3, that is, the movable clamp block 3 slides on the base 1, and the elastic pad 5 on the fixed clamp block 2 and the elastic pad 5 on the movable clamp block 3 can approach each other to clamp the specimen. The opposite surfaces of the two groups of contact pads 52 are provided with wavy concave-convex structures, which can enable the fixing mechanism to use the elasticity of the elastic pad 5 to clamp the thin film specimen more firmly when clamping the fixed thin film specimen.

[0028] Among them, Figure 1-Figure 5 As shown, the driving device 4 includes a support 41, a screw 42 and a handle 43. The support 41 is fixedly installed on the upper part of the base 1. The support 41 is arranged at one end of the base 1. The screw 42 is sleeved inside the support 41. The screw 42 is threadedly connected to the support 41. One end of the screw 42 is connected to the middle part of the movable clamp 3 by a bearing. The other end of the screw 42 is fixedly installed with a handle 43. The screw 42 is rotated by rotating the handle 43 to push the movable clamp 3 to slide on the base 1.

[0029] The working principle of this embodiment is as follows: when the impact tester needs to detect the impact performance of the film specimen, the elastic pad 5 is inserted and fixed in the slots 6 on the fixed clamp block 2 and the movable clamp block 3, and then the handle 43 is rotated to make the screw 42 drive the movable clamp block 3 to slide on the base 1 to open a distance with the fixed clamp block 2, and the film specimen is placed between the fixed clamp block 2 and the elastic pad 5 on the movable clamp block 3, and the handle 43 is rotated again to make the movable clamp block 3 slide on the base 1 close to the fixed clamp block 2 to clamp the film specimen, and the elastic pad 5 on the movable clamp block 3 is clamped. The elasticity and wavy concave-convex structure of the pad 5 make the film specimen clamped more firmly; when the impact testing machine needs to detect the impact performance of the solid specimen, the elastic pad 5 is taken out from the slot 6 on the fixed clamp block 2 and the movable clamp block 3, and then the solid specimen is placed between the fixed clamp block 2 and the movable clamp block 3, and the handle 43 is turned to make the movable clamp block 3 slide on the base 1 close to the fixed clamp block 2 to clamp the solid specimen; at the same time, the sliding movement of the movable clamp block 3 on the base 1 can also make the fixing structure suitable for fixing specimens of different models.

[0030] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A fixing mechanism for an impact testing machine, characterized in that: The invention comprises a base (1), a fixed clamping block (2), a movable clamping block (3), a driving device (4) and an elastic pad (5), wherein the fixed clamping block (2) is fixedly mounted on the base (1), the movable clamping block (3) is slidably mounted on the base (1), the fixed clamping block (2) is arranged on one side of the movable clamping block (3), the driving device (4) is arranged on the other side of the movable clamping block (3), the driving device (4) is fixedly mounted on the base (1), one end of the driving device (4) is rotatably connected to the movable clamping block (3), the elastic pad (5) is pluggably connected to the fixed clamping block (2) and the movable clamping block (3), the elastic pad (5) is arranged on opposite side walls of the fixed clamping block (2) and the movable clamping block (3), and two groups of the elastic pads (5) are arranged opposite to each other.

2. The fixing mechanism of the impact testing machine according to claim 1, characterized in that: The elastic pad (5) comprises a filling block (51) and a contact pad (52); the filling block (51) has a trapezoidal cross-sectional shape; the filling block (51) is pluggably connected to the fixed clamp block (2) and the movable clamp block (3); the short side of the filling block (51) is fixedly connected to the contact pad (52); and the contact pad (52) is abutted against opposite side walls of the fixed clamp block (2) and the movable clamp block (3).

3. The fixing mechanism of the impact testing machine according to claim 2, characterized in that: The fixed clamping block (2) and the movable clamping block (3) are provided with clamping slots (6), and the clamping slots (6) are adapted to fit the filling block (51).

4. The fixing mechanism of the impact testing machine according to claim 1, characterized in that: The movable clamping block (3) is a U-shaped block.

5. The fixing mechanism of the impact testing machine according to claim 1, characterized in that: The driving device (4) comprises a support (41), a screw (42) and a handle (43); the support (41) is fixedly arranged on the base (1); the screw (42) is sleeved inside the support (41); the screw (42) is threadedly connected to the support (41); one end of the screw (42) is connected to the middle part of the movable clamp (3) by a bearing; and the other end of the screw (42) is fixedly mounted with the handle (43).

6. The fixing mechanism of the impact testing machine according to claim 2, characterized in that: The opposing surfaces of the two groups of contact pads (52) are provided with wavy concave-convex structures.

7. The fixing mechanism of the impact testing machine according to claim 1, characterized in that: A slide rail (11) is fixedly arranged on the base (1), and the slide rail (11) is arranged along the axial direction of the screw rod (42). A groove (31) is provided at the bottom of the movable clamping block (3), and the groove (31) is adapted to fit the slide rail (11).

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