Clamp for tensile test of rubber part

Abstract

The utility model relates to the technical field of clamps, in particular to a rubber part tensile test clamp which comprises a clamp seat, a mounting cavity is formed in the clamp seat, a clamping assembly is arranged in the mounting cavity and used for clamping a rubber part, and the clamping assembly comprises a clamping block and a linkage part. The clamping blocks are symmetrically arranged along the axis of the clamp base, the clamping blocks are connected to the interior of the mounting cavity in a sliding mode, and the linkage pieces are connected with the clamping blocks and used for driving the clamping blocks to move. The problem that the rubber part is inconvenient to clamp is solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of clamps, in particular to a clamp for rubber part tensile testing. BACKGROUND

[0002] At present, clamps are applied to processing and measurement in many fields. The clamps for rubber part tensile testing on the market mainly include the following types.

[0003] 1. eccentric wheel plus spring clamping;

[0004] 2. two inclined surfaces plus spring clamping;

[0005] 3. bolt tensioning press plate clamping;

[0006] 4. air cylinder direct pressing;

[0007] 5. air cylinder pushing scissors clamping.

[0008] In the related art, when the rubber part is subjected to tensile testing, the rubber part is deformed under the action of tensile force, at this time, the clamps on the market will slip or even separate, so that the tensile force data obtained by testing is inaccurate.

[0009] In view of the above related art, the clamp has high requirements, 1. great clamping force is required, 2. the ability to prevent rebound is required, 3. the continuous feeding pressure is required, 4. the clamping is convenient and does not require complicated preparation work. Therefore, a clamp for rubber part tensile testing is required. CONTENT OF THE INVENTION

[0010] In order to improve the problem of inconvenient clamping of the rubber part, the application provides a clamp for rubber part tensile testing.

[0011] The clamp for rubber part tensile testing provided by the application adopts the following technical scheme:

[0012] A clamp for rubber part tensile testing, comprising a clamp seat, an installation cavity is formed in the clamp seat, a clamping assembly is arranged in the installation cavity, the clamping assembly is used for clamping a rubber part, the clamping assembly comprises a clamping block and a linkage, the clamping block is symmetrically arranged along the axis of the clamp seat, the clamping block is slidably connected to the inside of the installation cavity, the linkage is connected to the clamping block, and the linkage is used for driving the clamping block to move.

[0013] By adopting the above technical scheme, in the process of clamping the rubber part, the slider is driven to move by the connecting piece, and the rubber part is clamped after the opposite sliders approach each other, the clamping process is fast and convenient, the structure is simple and compact, the manufacturing cost and maintenance difficulty are reduced, and the service life can be effectively prolonged.

[0014] As a preferred scheme of the present application, the side wall of the clamp block close to the clamp seat is provided with a anti-back-off platform, the anti-back-off platform abuts against the side wall of the clamp seat, and the side wall of the clamp block close to the inner wall of the mounting cavity is provided with a locking piece, the locking piece is used for secondary locking of the clamp block.

[0015] By adopting the above technical scheme, the locking piece can provide further protection during clamping, reduce the rebound of the clamp block during testing, make the clamping of the clamp on the rubber part more firm, and increase the accuracy of the test data to a certain extent. During the clamping of the rubber part, the anti-back-off platform can improve the safety of the clamp and reduce the backward movement of the clamp block during clamping.

[0016] As a preferred scheme of the present application, the locking piece includes a locking block and a first rebound spring, a fixing groove is formed in the side wall of the clamp block close to the inner wall of the mounting cavity, the locking block is located in the fixing groove, one end of the first rebound spring is fixed to the inner wall of the fixing groove, the other end of the first rebound spring is connected to the outer wall of the locking block, a locking groove is formed in the inner wall of the mounting cavity close to the locking block, and the end of the locking block away from the first rebound spring can be located in the locking groove.

[0017] By adopting the above technical scheme, in the process of clamping the rubber part, the clamp block is pushed to clamp the rubber part by the connecting piece, when the clamp block moves to the position where the locking block corresponds to the locking groove, the first rebound spring pushes the locking block into the locking groove, thereby secondary locking the position of the clamp block, making the clamping process more stable and reducing the rebound of the clamp block.

[0018] As a preferred scheme of the present application, the side wall of the clamp block close to the clamp seat is provided with a anti-back-off platform, the anti-back-off platform abuts against the side wall of the clamp seat, and the side wall of the clamp block close to the inner wall of the mounting cavity is provided with a locking piece, the locking piece is used for secondary locking of the clamp block.

[0019] By adopting the technical scheme, when the test is completed, only the release lever is pressed, the side wall of the release lever abuts against the locking block, the locking block is pushed into the fixing groove, the locking block is separated from the locking groove, the clamping block can slide in the installation cavity, the rubber piece is released, the structure is simple, the operation is convenient, and the stability of the clamping block can be increased to a certain extent.

[0020] As a preferred scheme of the present application, the side wall of the rubber piece clamped by the clamping block is provided with anti-skid lines.

[0021] By adopting the technical scheme, the anti-skid lines can enhance the friction between the clamping block and the rubber piece, so that the clamping of the clamp on the rubber piece is more firm, the situation that the rubber piece slips off during the detection process is reduced, and the stability and accuracy of the test are enhanced.

[0022] As a preferred scheme of the present application, the outer wall of the clamp seat close to the clamping block is provided with a fixing piece, and the fixing piece is used for secondary fixing of the rubber piece.

[0023] By adopting the technical scheme, the fixing piece can further help the stability of the rubber piece, and further clamps the rubber piece on the basis of the clamping block, thereby greatly increasing the stability of the rubber piece.

[0024] As a preferred scheme of the present application, the fixing piece comprises a fixing rod, the fixing rod is rotationally connected to the side wall of the clamp seat, a fixing buckle is installed on the side wall of the clamp seat, and the fixing buckle is used for fixing the fixing rod.

[0025] By adopting the technical scheme, the end of the rubber piece is clamped by the fixing rod, the fixing rod is rotated to be connected with the fixing buckle, the fixing rod is fixed on the clamp seat by the fixing buckle, and the rubber piece is fixed, thereby greatly enhancing the stability of the rubber piece during the test.

[0026] As a preferred scheme of the present application, the connecting member comprises a swing rod, a connecting rod and a pushing connecting block, two of the swing rod and the connecting rod are symmetrically arranged corresponding to the clamping block, the end of the pushing connecting block is rotationally connected with two connecting rods, the pushing connecting block is perpendicular to the symmetry axis of the clamp seat, the ends of two connecting rods away from the pushing connecting block are respectively rotationally connected with the ends of two swing rods, the ends of two swing rods away from the connecting rods are connected with the ends of the clamping blocks, and the pushing connecting block is connected with a connecting driving member.

[0027] By adopting the technical scheme, in the process of clamping the rubber part, first, the driving connection block is driven by the linkage driving part to move axially along the clamp seat, the driving connection block drives the connecting rod to move, the connecting rod drives the swing rod, and finally the swing rod drives the clamping block to slide in the installation cavity, so that the two symmetrically arranged clamping blocks move relatively, thereby clamping the rubber part, the structure is compact and stable, the power transmission is stable, the weight and complexity of the whole clamp can be effectively reduced, the manufacturing cost and maintenance difficulty are reduced, and the service life of the whole clamp is further prolonged.

[0028] To sum up, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The present application sets up clamping block and linkage and linkage driving part, in the process of clamping the rubber part, the slider is driven by the linkage to move, the opposite slider is close to each other, and the rubber part is clamped, the clamping process is fast and convenient, the structure is simple and compact, the manufacturing cost and maintenance difficulty are reduced, and the service life is effectively prolonged, in the process of clamping the rubber part, first, the driving connection block is driven by the linkage driving part to move axially along the clamp seat, the driving connection block drives the connecting rod to move, the connecting rod drives the swing rod, and finally the swing rod drives the clamping block to slide in the installation cavity, so that the two symmetrically arranged clamping blocks move relatively, thereby clamping the rubber part, the structure is compact and stable, the power transmission is stable, the weight and complexity of the whole clamp can be effectively reduced, the manufacturing cost and maintenance difficulty are reduced, and the service life of the whole clamp is further prolonged;

[0030] 2. The present application sets up locking part, which can provide further protection during clamping, reduce the rebound of the clamping block during testing, make the clamping of the rubber part by the clamp more firm, and increase the accuracy of the test data to a certain extent, the anti-backup table can improve the safety of the clamp and reduce the backward movement of the clamping block during clamping, in the process of clamping the rubber part, the clamping block slides in the installation cavity when the clamping block is clamped by the linkage, when the clamping block moves to the position corresponding to the locking slot, the first rebound spring drives the locking block into the locking slot, thereby locking the position of the clamping block again, making the clamping process more stable and reducing the rebound of the clamping block;

[0031] 3. The present application sets up a fixing part, which can further help the stability of the rubber part, further clamps the rubber part based on the clamping block, greatly increases the stability of the rubber part, clamps the end of the rubber part by the fixing rod, rotates the fixing rod to connect with the fixing buckle, fixes the fixing rod on the clamp seat by the fixing buckle, thereby fixing the rubber part, and greatly enhances the stability of the rubber part during testing. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic diagram of the overall structure of the clamp for rubber part tensile test of embodiment 1 of the present application.

[0033] Figure 2 is a schematic diagram of the overall structure of the clamp for rubber part tensile test of embodiment 2 of the present application.

[0034] Figure 3 is a schematic diagram of the overall structure of the clamp for rubber part tensile test of embodiment 2 of the present application. Figure 2 is a schematic diagram of the overall structure of the clamp for rubber part tensile test of embodiment 2 of the present application.

[0035] Figure 4 is a schematic diagram of the overall structure of the clamp for rubber part tensile test of embodiment 2 of the present application.

[0036] Reference signs: 1, clamp seat; 11, mounting cavity; 12, locking groove; 13, release hole; 2, clamping assembly; 21, clamping block; 211, anti-back table; 212, fixing groove; 213, anti-skid pattern; 22, linkage; 221, swing lever; 222, connecting rod; 223, push connecting block; 23, linkage driving piece; 3, locking piece; 31, locking block; 32, first rebound spring; 4, locking release piece; 41, locking release lever; 42, second rebound spring; 5, fixing piece; 51, fixing lever; 52, fixing buckle; 6, tensile machine; 7, upper clamp; 8, lower clamp. DETAILED DESCRIPTION

[0037] The following will be described in detail in combination with the accompanying drawings. Figures 1-4 The present application will be further described in detail.

[0038] Embodiment 1

[0039] The present application discloses a clamp for rubber part tensile test. Referring to Figure 1 , a clamp for rubber part tensile test comprises a clamp seat 1 and a clamping assembly 2.

[0040] Referring to Figure 1 , a mounting cavity 11 is formed inside the clamp seat 1, and the clamping assembly 2 is arranged in the mounting cavity 11. The clamping assembly 2 is used for clamping the rubber part, and comprises a clamping block 21 and a linkage 22. The clamping block 21 is symmetrically arranged along the axis of the clamp seat 1, and is slidably connected inside the mounting cavity 11. The clamping block 21 is provided with an anti-back table 211 on the side wall close to the clamp seat 1, and the anti-back table 211 abuts against the side wall of the clamp seat 1.

[0041] In the process of clamping the rubber part, the linkage 22 drives the sliding block to move, and the rubber part is clamped after the opposite sliding blocks approach each other. The clamping process is fast and convenient, the structure is simple and compact, the manufacturing cost and maintenance difficulty are reduced, and the service life can be effectively prolonged.

[0042] The connecting member 22 is connected with the clamping block 21, the connecting member 22 is used for driving the clamping block 21 to move, the connecting member 22 comprises a swing rod 221, a connecting rod 222 and a pushing connecting block 223, the swing rod 221 and the connecting rod 222 are both provided with two rods in correspondence with the clamping block 21, the end of the pushing connecting block 223 is rotationally connected with the two connecting rods 222, the pushing connecting block 223 is vertically arranged with the symmetry axis of the clamp base 1, the ends of the two connecting rods 222 away from the pushing connecting block 223 are respectively rotationally connected with the ends of the two swing rods 221, the ends of the two swing rods 221 away from the connecting rods 222 are connected with the ends of the clamping blocks 21, and the pushing connecting block 223 is connected with the connecting driving member 23.

[0043] The connecting driving member 23 can be provided as a driving cylinder, so that the clamping automation can be realized, and the clamping efficiency is improved.

[0044] In the process of clamping the rubber part, first, the pushing connecting block 223 is driven by the connecting driving member 23 to move along the axial direction of the clamp base 1, the pushing connecting block 223 drives the connecting rod 222 to move, the connecting rod 222 drives the swing rod 221 to move, and finally the swing rod 221 drives the clamping block 21 to slide in the mounting cavity 11, so that the two symmetrically arranged clamping blocks 21 move relative to each other, thereby clamping the rubber part, the structure is compact and stable, the power transmission is stable, the weight and complexity of the clamp as a whole can be effectively reduced, the manufacturing cost and maintenance difficulty are reduced, and the service life of the clamp as a whole is further prolonged.

[0045] Embodiment 2

[0046] The embodiment of the application discloses a clamp for rubber part tensile test, and the structure of the embodiment is the same as that of the embodiment 1, and details are not described again, specifically,

[0047] Referring to Figure 2 and Figure 3 , the side wall of the clamping block 21 close to the inner wall of the mounting cavity 11 is provided with a locking member 3, and the locking member 3 is used for second locking the clamping block 21.

[0048] The locking member 3 can provide further protection during clamping, reduce the rebound of the clamping block 21 during the test process, make the clamping of the clamp on the rubber part more firm, and increase the accuracy of the test data to a certain extent, the anti-backup platform 211 can improve the safety of the clamp and reduce the retraction of the clamping block 21 during the clamping process.

[0049] The locking piece 3 comprises a locking block 31 and a first rebound spring 32, the side wall of the clamping block 21 close to the inner wall of the mounting cavity 11 is provided with a fixing groove 212, the locking block 31 is located in the fixing groove 212, one end of the first rebound spring 32 is fixed on the inner wall of the fixing groove 212, the other end of the first rebound spring 32 is connected with the outer wall of the locking block 31, the inner wall of the mounting cavity 11 close to the locking block 31 is provided with a locking groove 12, and the end of the locking block 31 away from the first rebound spring 32 can be located in the locking groove 12.

[0050] In the process of clamping the rubber piece, the clamping block 21 is pushed by the connecting piece 22 to clamp the rubber piece, and the clamping block 21 slides in the mounting cavity 11, when the clamping block 21 moves to the position that the locking block 31 corresponds to the locking groove 12, the first rebound spring 32 pushes the locking block 31 into the locking groove 12, so that the position of the clamping block 21 is locked again, and the clamping process is more stable, and the rebound of the clamping block 21 is reduced.

[0051] The clamping seat 1 is provided with a locking release piece 4 on the side wall close to the locking piece 3, the locking release piece 4 comprises a locking release rod 41 and a second rebound spring 42, the clamping seat 1 is provided with a release hole 13 on the side wall close to the locking piece 3, the release hole 13 communicates with the mounting cavity 11, the locking release rod 41 is located in the release hole 13, one end of the second rebound spring 42 is fixed on the inner wall of the release hole 13, the other end of the second rebound spring 42 is connected with the side wall of the release rod, and the end of the release rod can abut against the side wall of the locking block 31.

[0052] When the test is finished, the release rod is pressed, the side wall of the release rod abuts against the locking block 31, the locking block 31 is pushed into the fixing groove 212, the locking block 31 is separated from the locking groove 12, so that the clamping block 21 can slide in the mounting cavity 11, and the rubber piece is released, so that the structure is simple, the operation is convenient, and the stability of the clamping block 21 can be increased to a certain extent.

[0053] The side wall of the clamping block 21 clamping the rubber piece is provided with anti-skid lines 213.

[0054] The anti-skid lines 213 can enhance the friction between the clamping block 21 and the rubber piece, so that the clamping of the clamp on the rubber piece is more firm, the rubber piece is prevented from falling off in the detection process, and the stability and accuracy of the test are enhanced.

[0055] The clamping seat 1 is provided with a fixing piece 5 on the outer wall close to the clamping block 21, and the fixing piece 5 is used for fixing the rubber piece again.

[0056] The fixing piece 5 can further help the stability of the rubber piece, and further clamps the rubber piece on the basis of the clamping block 21, so that the stability of the rubber piece is greatly increased.

[0057] The fixing member 5 comprises a fixing rod 51 rotatably connected to the side wall of the clamp seat 1, and a fixing buckle 52 is installed on the side wall of the clamp seat 1, and the fixing buckle 52 is used for fixing the fixing rod 51.

[0058] The end of the rubber member is clamped by the fixing rod 51, the fixing rod 51 is rotated to be connected with the fixing buckle 52, the fixing rod 51 is fixed on the clamp seat 1 through the fixing buckle 52, so that the rubber member is fixed, and the stability of the rubber member during the test is greatly enhanced.

[0059] The implementation principle of the rubber member tensile test clamp provided in the embodiment of the application is as follows: in the process of clamping the rubber member, first, the rubber member is placed between the fixing rod 51 and the clamp seat 1, then the fixing rod 51 is fixed through the fixing buckle 52, so that the fixing rod 51 and the clamp seat 1 clamp the rubber member, then the linkage driving member 23 drives the linkage member 22 to move, the linkage member 22 drives the clamp block 21 to slide in the installation cavity 11, when the clamp block 21 clamps the rubber member, the locking block 31 moves to correspond to the locking groove 12, the first elastic spring 32 pushes the locking block 31 into the locking groove 12, so that the position of the clamp block 21 is fixed again, and the rebound of the clamp block 21 is further prevented, the overall structure of the clamp is compact and simple, and the clamp is convenient and fast to operate.

[0060] Embodiment 3

[0061] The embodiment provides an application of the rubber member tensile test clamp. The structures of the upper clamp 7 and the lower clamp 8 in the embodiment are consistent with those in the embodiment 1 or the embodiment 2, and will not be described in detail here, in particular,

[0062] Referring to Figure 4 , the upper clamp 7 and the lower clamp 8 are symmetrically connected in the axial direction of the tensile testing machine 6, the clamp blocks 21 of the upper clamp 7 and the lower clamp 8 are correspondingly arranged, and the rubber member is clamped by the upper clamp 7 and the lower clamp 8 together.

[0063] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A fixture for tensile testing of rubber parts, comprising a fixture base (1), characterized in that: The fixture seat (1) has an installation cavity (11) inside. A clamping assembly (2) is provided in the installation cavity (11). The clamping assembly (2) is used to clamp the rubber part. The clamping assembly (2) includes a clamping block (21) and a linkage (22). The clamping block (21) is symmetrically arranged along the axis of the fixture seat (1). The clamping block (21) is slidably connected inside the installation cavity (11). The linkage (22) is connected to the clamping block (21) and is used to drive the clamping block (21) to move.

2. The fixture for tensile testing of rubber parts according to claim 1, characterized in that: The clamping block (21) is provided with an anti-retraction platform (211) on the side wall near the clamping seat (1). The anti-retraction platform (211) abuts against the side wall of the clamping seat (1). A locking member (3) is provided on the side wall of the clamping block (21) near the inner wall of the mounting cavity (11). The locking member (3) is used to lock the clamping block (21) a second time.

3. The fixture for tensile testing of rubber parts according to claim 2, characterized in that: The locking component (3) includes a locking block (31) and a first rebound spring (32). A fixing groove (212) is provided on the side wall of the clamping block (21) near the inner wall of the mounting cavity (11). The locking block (31) is located in the fixing groove (212). One end of the first rebound spring (32) is fixed on the inner wall of the fixing groove (212). The other end of the first rebound spring (32) is connected to the outer wall of the locking block (31). A locking groove (12) is provided on the inner wall of the mounting cavity (11) near the locking block (31). The end of the locking block (31) away from the first rebound spring (32) can be located in the locking groove (12).

4. A fixture for tensile testing of rubber parts according to claim 3, characterized in that: A locking release member (4) is provided on the side wall of the clamp seat (1) near the locking member (3). The locking release member (4) includes a locking release rod (41) and a second spring (42). A release hole (13) is provided on the side wall of the clamp seat (1) near the locking member (3). The release hole (13) communicates with the mounting cavity (11). The locking release rod (41) is located in the release hole (13). One end of the second spring (42) is fixed to the inner wall of the release hole (13). The other end of the second spring (42) is connected to the side wall of the release rod. The end of the release rod can abut against the side wall of the locking block (31).

5. A fixture for tensile testing of rubber parts according to claim 1, characterized in that: The clamping block (21) has anti-slip texture (213) on the side wall of the rubber part.

6. A fixture for tensile testing of rubber parts according to claim 1, characterized in that: The clamp seat (1) is provided with a fixing member (5) near the outer wall of the clamp block (21), and the fixing member (5) is used to fix the rubber part in a secondary manner.

7. A fixture for tensile testing of rubber parts according to claim 6, characterized in that: The fixing member (5) includes a fixing rod (51), which is rotatably connected to the side wall of the clamp seat (1). A fixing buckle (52) is installed on the side wall of the clamp seat (1) and is used to fix the fixing rod (51).

8. A fixture for tensile testing of rubber parts according to claim 1, characterized in that: The linkage (22) includes a rocker arm (221), a connecting rod (222), and a push connecting block (223). The rocker arm (221) and the connecting rod (222) are symmetrically arranged in twos corresponding to the clamping block (21). The end of the push connecting block (223) is rotatably connected to the two connecting rods (222). The push connecting block (223) is arranged perpendicular to the axis of symmetry of the clamping seat (1). The ends of the two connecting rods (222) away from the push connecting block (223) are rotatably connected to the ends of the two rocker arms (221), respectively. The ends of the two rocker arms (221) away from the connecting rods (222) are connected to the ends of the clamping block (21). A linkage drive (23) is connected to the push connecting block (223).

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