Tension detection machine for rubber part

Abstract

The utility model discloses a rubber member tension detection machine, which comprises two symmetrically arranged lifting plates, and is characterized in that the two lifting plates are connected with a plurality of uniformly arranged U-shaped plates, one sides, far away from each other, of the two U-shaped plates are connected with U-shaped frames, insertion rods are connected in the U-shaped frames in a sliding manner, and the insertion rods are inserted into the U-shaped frames. Inserting grooves are formed in the positions, corresponding to the inserting rods, of the U-shaped plate and the lifting plate, a plurality of evenly-arranged inserting grooves are formed in the lifting plate, the inserting rods are inserted into the inserting grooves, external connecting rings are connected to the positions, corresponding to the interior of the U-shaped frame, of the outer sides of the inserting rods, first springs are connected between the external connecting rings and the U-shaped frame, and the first springs are located on the outer sides of the inserting rods. When multiple groups of pulling force detection needs to be carried out on the rubber part, multiple groups of data detection can be carried out on the rubber part under the cooperation of the two lifting plates by taking the multiple U-shaped plates and sequentially and respectively installing the multiple U-shaped plates on the corresponding positions of the two lifting plates, so that the detection efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of tensile testing technology, specifically relating to a tensile testing machine for rubber parts. Background Technology

[0002] Rubber parts are elastic components made primarily of rubber. They possess excellent wear resistance, shock absorption, insulation, and sealing properties, and are widely used in automobiles, machinery, construction, and other fields. They can adapt to different temperature environments and quickly return to their original shape after being subjected to stress.

[0003] A rubber tensile testing machine is a specialized testing device used to test the mechanical properties of elastic materials such as rubber. It can perform tensile, compression, and bending tests on materials.

[0004] Patent application CN215833131U discloses a tensile testing device for finished rubber products, which improves the efficiency of tensile testing and ensures the accuracy of data. Although the above device can test the tensile force of rubber parts, in actual use, it can only test the tensile force of one rubber part at a time. When multiple sets of rubber parts need to be tested, they need to be tested one by one, which consumes a lot of time and has low efficiency. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that existing technologies cannot perform multiple tensile tests on rubber parts, and to provide a tensile testing machine for rubber parts.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A rubber tensile testing machine includes two symmetrically arranged lifting plates. Each lifting plate is connected to a plurality of evenly arranged U-shaped plates. A U-shaped frame is connected to the side of each U-shaped plate that is far apart from each other. A rod is slidably connected inside the U-shaped frame. Slots are provided on the U-shaped plates and lifting plates at positions corresponding to the rods. Multiple evenly arranged slots are provided on the lifting plates. The rod is inserted into the slot. An outer ring is connected to the outside of the rod at a position corresponding to the inside of the U-shaped frame. A first spring is connected between the outer ring and the U-shaped frame. The first spring is located outside the rod. A pull plate is connected to the end of the rod that is far away from the U-shaped plate.

[0008] Preferably, a base is provided below the lifting plate, and symmetrically arranged brackets are connected to the upper surface of the base corresponding to the positions of both ends of the lifting plate. Connecting plates are connected to the positions of both ends of the lifting plate corresponding to the positions of the brackets. The connecting plates are located inside the brackets, and a bidirectional screw is rotatably connected inside one of the brackets. Two connecting plates are threadedly connected to the bidirectional screw, and the upper end of the bidirectional screw passes through the bracket and is connected to a motor fixed to the upper end of the bracket.

[0009] Preferably, a positioning rod is connected inside another bracket, and two other connecting plates are slidably connected to the positioning rod.

[0010] Preferably, a test plate is connected to the side of the U-shaped plate away from the U-shaped frame, and the end of the test plate away from the U-shaped plate is semi-circular.

[0011] Preferably, a first outer shell is connected to the side of the U-shaped plate corresponding to the position of the test plate, and a pressure block is slidably connected inside the first outer shell. The shape of the end of the pressure block away from the U-shaped plate is consistent with the semi-circular shape of the test plate.

[0012] Preferably, a second spring is symmetrically arranged between the pressure block and the first outer shell. A lever is connected to the side of the pressure block away from the U-shaped plate corresponding to the position of the first outer shell. A movable groove is opened on the first outer shell corresponding to the position of the lever, and the lever is slidably connected in the movable groove.

[0013] Preferably, a vertical plate is connected to the side of the U-shaped plate away from the U-shaped frame and close to the detection plate, and a second outer shell is connected to the end of the vertical plate away from the detection plate. Symmetrically arranged grippers are rotatably connected inside the second outer shell.

[0014] Preferably, a third spring is connected between the middle of the two grippers.

[0015] Preferably, a cylinder is connected to the gripper on the side of the U-shaped plate away from the U-shaped frame, and a trapezoidal block is connected to the output end of the cylinder. An arc-shaped surface is opened on the end of the gripper near the trapezoidal block, corresponding to the position of the trapezoidal block.

[0016] The beneficial effects of this utility model are:

[0017] When multiple sets of tensile tests are required on rubber parts, multiple U-shaped plates are taken and sequentially installed in corresponding positions on two lifting plates. With the cooperation of the two lifting plates, multiple sets of data can be tested on the rubber parts, thereby improving testing efficiency. When installing the U-shaped plate on the lifting plate, the pull plate needs to be pulled first to move the insertion rod out of the slot of the U-shaped plate. During the movement of the insertion rod, the outer ring moves, and the movement of the outer ring compresses the first spring. The first spring will contract and store the restoring force when compressed. At this time, the middle part of the U-shaped plate is aligned with the lifting plate and inserted, and the insertion rod is aligned with the slot of the lifting plate. The pull ring is slowly released, and under the action of the restoring force of the first spring, the insertion rod can be inserted into the slot, thus fixing the U-shaped plate. When it is necessary to remove the U-shaped plate, simply pull the pull plate to remove the insertion rod from the slot. The installation and removal of the U-shaped plate is relatively simple and can improve efficiency.

[0018] When multiple tensile tests are required on a rubber component, multiple U-shaped plates are taken and sequentially installed on corresponding positions of two lifting plates. After the U-shaped plates are installed, if the rubber component to be tested is annular, the rubber component is aligned with the test plate. By sequentially pulling two corresponding levers, the pressure block moves into the first housing. During the process of the pressure block entering the first housing, it compresses the second spring. The second spring, under compression, contracts and stores restoring force. After the pressure block is fully inside the first housing, the semi-circular end of the test plate is no longer obstructed. The two ends of the annular rubber component are then sequentially placed into the two corresponding test plates. After one end of the annular rubber component is placed into one of the corresponding test plates, the lever is slowly released. Under the action of the second spring's restoring force, the pressure block moves out of the first housing and presses the end of the annular rubber component tightly. During the tensile test of the annular rubber component, if the annular rubber component breaks, the pressure block and the test plate will restrain the annular rubber component, preventing breakage. The device serves a protective function against injuries caused by flying rubber parts. If the rubber part to be tested is not annular, it is moved to a position between two sets of corresponding grippers. After the movement is completed, two cylinders are activated in sequence, causing the cylinders to drive the trapezoidal block closer to the middle of the two grippers. With the cooperation of the arc surface and the trapezoidal block, the two grippers are squeezed together, bringing them closer together and clamping the rubber part. This allows for tensile testing of non-annular rubber parts. During the process of the two grippers approaching each other, a third spring is compressed. After being compressed, the third spring contracts and stores restoring force. After the tensile testing of the rubber part is completed, the trapezoidal block moves away from the two grippers, and the restoring force of the third spring causes the two grippers to unfold, preparing for subsequent tensile testing of the rubber part. This device can perform tensile testing on both annular and non-annular rubber parts, making it highly adaptable. It can also perform tensile testing on multiple sets of rubber parts simultaneously, improving testing efficiency. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 This is a perspective view of the positioning rod in this utility model;

[0023] Figure 4 This is a perspective view of the U-shaped plate in this utility model;

[0024] Figure 5This is a perspective view of the other side of the U-shaped plate in this utility model;

[0025] Figure 6 This is a cross-sectional view of the second outer shell in this utility model.

[0026] In the diagram: 1. Lifting plate; 2. U-shaped plate; 3. Test plate; 4. Vertical plate;

[0027] 11. Connecting plate; 12. Bracket; 13. Two-way lead screw; 14. Motor; 15. Positioning rod; 16. Base;

[0028] 21. U-shaped frame; 22. Insert rod; 23. Slot; 24. External connecting ring; 25. First spring; 26. Pull plate;

[0029] 31. First outer casing; 32. Pressure block; 33. Second spring; 34. Pulley; 35. Movable groove;

[0030] 41. Second outer shell; 42. Gripper; 43. Third spring; 44. Cylinder; 45. Trapezoidal block; 46. Curved surface. Detailed Implementation

[0031] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0032] Please see Figure 1 - Figure 6 As shown, a rubber component tensile testing machine includes two symmetrically arranged lifting plates 1, which are used to assist in testing the tensile strength of rubber components.

[0033] A base 16 is provided below the lifting plate 1, which is used to connect to and support the bracket 12.

[0034] The upper surface of the base 16 is connected to symmetrically arranged brackets 12 at the positions corresponding to both ends of the lifting plate 1. Both ends of the lifting plate 1 are connected to the positions corresponding to the brackets 12. The connecting plates 11 are located inside the brackets 12 and are used to assist in driving the lifting plate 1 to rise and fall.

[0035] One of the brackets 12 is rotatably connected to a bidirectional lead screw, and two connecting plates 11 are threadedly connected to the bidirectional lead screw. Through the cooperation between the bidirectional lead screw and the connecting plates 11, the two lifting plates 1 can move closer or further away from each other, thereby achieving the purpose of testing the tensile strength of the rubber parts.

[0036] The upper end of the bidirectional lead screw passes through the bracket 12 and is connected to the motor 14 fixed to the upper end of the bracket 12. The motor 14 is used to drive the bidirectional lead screw to rotate.

[0037] Another bracket 12 is connected to a positioning rod 15, and two other connecting plates 11 are slidably connected to the positioning rod 15. With the cooperation of the positioning rod 15, the lifting plate 1 can be prevented from deflecting during the lifting process.

[0038] Multiple evenly arranged U-shaped plates 2 are connected to both lifting plates 1. A U-shaped frame 21 is connected to the side of the two U-shaped plates 2 that is far apart from each other. A plug rod 22 is slidably connected inside the U-shaped frame 21. The plug rod 22 is used to fix the position of the U-shaped plate 2.

[0039] Both the U-shaped plate 2 and the lifting plate 1 have slots 23 at the positions corresponding to the insertion rods 22. The lifting plate 1 also has multiple evenly arranged slots 23. The insertion rods 22 are inserted into the slots 23. The insertion rods 22 and the slots 23 cooperate to fix the position of the U-shaped plate 2.

[0040] An outer ring is connected to the outside of the insertion rod 22 at the position corresponding to the inside of the U-shaped frame 21. A first spring 25 is connected between the outer ring and the U-shaped frame 21. The first spring 25 is located on the outside of the insertion rod 22 and is used to reset the insertion rod 22.

[0041] The end of the insertion rod 22 away from the U-shaped plate 2 is connected to a pull plate 26, which is used to remove the insertion rod 22 from the slot 23.

[0042] In practical use, when multiple sets of tensile force tests are required on rubber parts, multiple U-shaped plates 2 are taken and sequentially installed on corresponding positions of two lifting plates 1. With the cooperation of the two lifting plates 1, multiple sets of data tests can be performed on the rubber parts, thereby improving testing efficiency. When installing the U-shaped plates 2 on the lifting plates 1, the pull plate 26 needs to be pulled first to move the insertion rod 22 out of the slot 23 of the U-shaped plate 2. During the movement, the insertion rod 22 drives the outer ring to move. The movement of the outer ring affects the first spring 2. When the first spring 25 is compressed, it will contract and store restoring force. At this time, the middle part of the U-shaped plate 2 is aligned with the lifting plate 1 and inserted, and the insertion rod 22 is aligned with the slot 23 of the lifting plate 1. The pull ring is slowly released. Under the action of the restoring force of the first spring 25, the insertion rod 22 can be inserted into the slot 23, so that the U-shaped plate 2 is fixed. When it is necessary to remove the U-shaped plate 2, simply pull the pull plate 26 to remove the insertion rod 22 from the slot 23. The installation and removal of the U-shaped plate 2 is relatively simple and can improve efficiency.

[0043] A test plate 3 is connected to the side of the U-shaped plate 2 away from the U-shaped frame 21. The end of the test plate 3 away from the U-shaped plate 2 is semi-circular. The tensile strength of the annular rubber part can be tested by passing through the semi-circular test plate 3 at the end.

[0044] A first outer shell 31 is connected to the side of the U-shaped plate 2 corresponding to the position of the test plate 3. A pressure block 32 is slidably connected inside the first outer shell 31. The shape of the end of the pressure block 32 away from the U-shaped plate 2 is consistent with the semi-circular shape of the test plate 3. With this setting, when the tensile force of the annular rubber part is tested, the pressure block 32 can press down on the end of the annular rubber part.

[0045] A symmetrically arranged second spring 33 is connected between the pressure block 32 and the first outer shell 31. The second spring 33 is used to reset the pressure block 32.

[0046] A lever 34 is connected to the side of the pressure block 32 away from the U-shaped plate 2, corresponding to the position of the first outer shell 31. The first outer shell 31 has a movable groove 35 corresponding to the position of the lever 34. The lever 34 is slidably connected in the movable groove 35. By opening the movable groove 35, it is ensured that the lever 34 can move.

[0047] A vertical plate 4 is connected to the side of the U-shaped plate 2 away from the U-shaped frame 21 near the detection plate. The vertical plate 4 is used to connect the second outer shell 41.

[0048] The end of the vertical plate 4 away from the detection plate is connected to a second outer shell 41, which is used to store the gripper 42.

[0049] The second outer shell 41 is rotatably connected to symmetrically arranged grippers 42, which are used to hold rubber parts.

[0050] A third spring 43 is connected between the middle of the two grippers 42. The third spring 43 is used to reset the two grippers 42 and allow the two grippers 42 to unfold.

[0051] A cylinder 44 is connected to the side of the U-shaped plate 2 away from the U-shaped frame 21, corresponding to the position of the gripper 42. The cylinder 44 is used to drive the trapezoidal block to move.

[0052] The output end of the cylinder 44 is connected to a trapezoidal block. The end of the gripper 42 near the trapezoidal block has an arc-shaped surface 46 corresponding to the position of the trapezoidal block. With the cooperation of the arc-shaped surface 46 and the trapezoidal block, the two trapezoidal blocks can be brought closer to each other.

[0053] Working principle:

[0054] When multiple tensile tests are required on a rubber component, multiple U-shaped plates 2 are taken and sequentially installed on corresponding positions of two lifting plates 1. After the U-shaped plates 2 are installed, if the rubber component to be tested is annular, the rubber component is aligned with the position of the test plate 3. By sequentially pulling two corresponding levers 34, the pressure block 32 is moved into the first housing 31. During the process of the pressure block 32 entering the first housing 31, it will compress the second spring 33. The second spring 33 will contract and store restoring force when compressed. After the pressure block 32 is completely inside the first housing 31... The semi-circular end of the test plate 3 is no longer obstructed. The two ends of the annular rubber part are placed on the two corresponding test plates 3 in sequence. After one end of the annular rubber part is placed in one of the corresponding test plates 3, the lever 34 is slowly released. Under the action of the restoring force of the second spring 33, the pressure block 32 will move out from the first outer shell 31 and press the end of the annular rubber part. When the annular rubber part is tested for tensile strength, if the annular rubber part breaks, the pressure block 32 and the test plate 3 will restrict the annular rubber part to prevent the broken annular rubber part from flying away and causing injury to personnel, thus playing a protective role.

[0055] If the rubber part to be tested is not annular, move the rubber part to the position between the two sets of corresponding grippers 42. After the movement is completed, activate the two cylinders 44 in sequence, causing the cylinders 44 to drive the trapezoidal block closer to the middle of the two grippers 42. With the cooperation of the arc surface 46 and the trapezoidal block, the two grippers 42 can be squeezed, causing the two grippers 42 to move closer together. When the two grippers 42 move closer together, they can clamp the rubber part, thus enabling tensile testing of non-annular rubber parts. During the process of the two grippers 42 moving closer together, The third spring 43 is compressed, and after being compressed, the third spring 43 contracts and stores restoring force. After the tensile test of the rubber part is completed, the trapezoidal block moves away from the two grippers 42. Under the action of the restoring force of the third spring 43, the two grippers 42 can be unfolded, preparing for the subsequent tensile test of the rubber part. This device can perform tensile tests on both annular and non-annular rubber parts, has strong adaptability, and can perform tensile tests on multiple sets of rubber parts simultaneously, improving the testing efficiency.

[0056] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A tensile testing machine for rubber parts, comprising two symmetrically arranged lifting plates (1), characterized in that: Multiple evenly arranged U-shaped plates (2) are connected to both lifting plates (1). A U-shaped frame (21) is connected to the side of the two U-shaped plates (2) that is far away from each other. A plug rod (22) is slidably connected inside the U-shaped frame (21). Slots (23) are opened on both the U-shaped plate (2) and the lifting plate (1) at the position corresponding to the plug rod (22). Multiple evenly arranged slots (23) are opened on the lifting plate (1). The plug rod (22) is inserted into the slot (23). An outer ring is connected to the outside of the plug rod (22) at the position corresponding to the inside of the U-shaped frame (21). A first spring (25) is connected between the outer ring and the U-shaped frame (21). The first spring (25) is located outside the plug rod (22). A pull plate (26) is connected to the end of the plug rod (22) that is far away from the U-shaped plate (2).

2. The tensile testing machine for rubber parts according to claim 1, characterized in that: A base (16) is provided below the lifting plate (1). A symmetrically arranged bracket (12) is connected to the upper surface of the base (16) at the positions corresponding to both ends of the lifting plate (1). A connecting plate (11) is connected to both ends of the lifting plate (1) at the positions corresponding to the bracket (12). The connecting plate (11) is located inside the bracket (12). A bidirectional screw is rotatably connected inside one of the brackets (12). Two connecting plates (11) are threadedly connected to the bidirectional screw. The upper end of the bidirectional screw passes through the bracket (12) and is connected to a motor (14) fixed to the upper end of the bracket (12).

3. The tensile testing machine for rubber parts according to claim 2, characterized in that: Another bracket (12) is connected to a positioning rod (15), and two other connecting plates (11) are slidably connected to the positioning rod (15).

4. A tensile testing machine for rubber parts according to claim 3, characterized in that: The test plate (3) is connected to the side of the U-shaped plate (2) away from the U-shaped frame (21), and the end of the test plate (3) away from the U-shaped plate (2) is semi-circular.

5. A tensile testing machine for rubber parts according to claim 4, characterized in that: The side of the U-shaped plate (2) is connected to the position of the test plate (3) with a first outer shell (31). A pressure block (32) is slidably connected inside the first outer shell (31). The shape of the end of the pressure block (32) away from the U-shaped plate (2) is consistent with the semi-circular shape of the test plate (3).

6. A tensile testing machine for rubber parts according to claim 5, characterized in that: A second spring (33) is symmetrically arranged between the pressure block (32) and the first outer shell (31). A lever (34) is connected to the side of the pressure block (32) away from the U-shaped plate (2) corresponding to the position of the first outer shell (31). A movable groove (35) is opened in the first outer shell (31) corresponding to the position of the lever (34). The lever (34) is slidably connected in the movable groove (35).

7. A tensile testing machine for rubber parts according to claim 6, characterized in that: A vertical plate (4) is connected to the side of the U-shaped plate (2) away from the U-shaped frame (21) and close to the detection plate. A second outer shell (41) is connected to the end of the vertical plate (4) away from the detection plate. A symmetrically arranged gripper (42) is rotatably connected inside the second outer shell (41).

8. A tensile testing machine for rubber parts according to claim 7, characterized in that: A third spring (43) is connected between the middle of the two grippers (42).

9. A tensile testing machine for rubber parts according to claim 8, characterized in that: A cylinder (44) is connected to the side of the U-shaped plate (2) away from the U-shaped frame (21) at the position corresponding to the gripper (42). A trapezoidal block is connected to the output end of the cylinder (44). An arc-shaped surface (46) is opened at the end of the gripper (42) near the trapezoidal block at the position corresponding to the trapezoidal block.

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