Clamping mechanism used in flexible glue product tensile test device

Abstract

The utility model provides a clamping mechanism for a flexible glue product tensile test device, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The clamping mechanism used in the flexible glue product tensile test device comprises a body, a guide block, a pressing plate and a driving mechanism, the body is U-shaped, two sides of the U shape of the body are respectively a connecting part and a clamping part, the guide block is fixedly connected to the bottom of a U-shaped notch of the body, the pressing plate is located at the U-shaped notch of the body, the lower part of the pressing plate is connected with the guide block, and the driving mechanism is arranged on the body. The driving mechanism is arranged between the connecting part and the pressing plate, the driving mechanism can drive the pressing plate to translate along the guide block, the translated pressing plate can be close to or far away from the clamping part, and a positioning structure capable of increasing frictional resistance is arranged between the pressing plate and the clamping part. The clamping mechanism used in the flexible glue product tensile test device is high in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a clamping mechanism in a stretching test device for soft rubber products. Background Art

[0002] Due to its own characteristics, soft rubber products are soft.

[0003] Soft rubber products need to be subjected to a stretching test to obtain parameter indexes such as their elongation rate and strength.

[0004] The following problems exist in the conventional test treatment:

[0005] Since the surface of the soft rubber product is smooth and there is no obvious structure for clamping on the product, the product to be clamped may fall off during the test, resulting in its inability to be tested or poor test stability. Summary of the Invention

[0006] The purpose of the utility model is to provide a clamping mechanism in a stretching test device for soft rubber products with high stability and a compact structure in view of the above problems existing in the prior art.

[0007] The purpose of the utility model can be realized by the following technical solutions:

[0008] A clamping mechanism in a stretching test device for soft rubber products, characterized in that the clamping mechanism includes a body, a guide block, a pressing plate and a driving mechanism. The body is U-shaped, and the two sides of the U-shaped body are respectively a connecting part and a clamping part. The guide block is fixedly connected to the bottom of the U-shaped notch of the body. The pressing plate is located at the U-shaped notch of the body, and the lower part of the pressing plate is connected to the guide block. The driving mechanism is arranged between the connecting part and the pressing plate, and the driving mechanism can drive the pressing plate to translate along the guide block. After translation, the pressing plate can approach or move away from the clamping part. A positioning structure capable of increasing the frictional resistance is provided between the pressing plate and the clamping part.

[0009] The clamping mechanism for the stretching test device of soft rubber products creatively sets a guide block and a pressing plate in the body. Since the lower end of the pressing plate is connected to the guide block, the pressing plate can stably translate along the guide block under the action of the driving mechanism.

[0010] The positioning structure is located between the pressing plate and the clamping part of the body. Therefore, after the driving member drives the pressing plate to translate, the gap between the pressing plate and the clamping part of the body becomes larger or smaller, so as to clamp or release the soft rubber product located there.

[0011] During the clamping process of the soft rubber product, the positioning structure between the pressing plate and the clamping part can effectively increase the frictional resistance of the soft rubber product between the two, and finally can stably clamp and position the soft rubber product.

[0012] This clamping mechanism is applied in a tensile testing device. One clamping mechanism is fixed on the frame, and the other clamping mechanism is connected to a driving member. After the two ends of the soft rubber product are respectively positioned and connected to the corresponding clamping mechanisms, the driving member drives one clamping mechanism away from the other clamping mechanism, so as to stably stretch the soft rubber product.

[0013] After the soft rubber product is stretched, the testing device can obtain parameters such as its elongation rate and strength. How the elongation rate is calculated and how the strength is obtained are not the technical problems to be solved by this patent application. The problem to be solved by this patent application is how to stably clamp and position the smooth and flexible soft rubber product.

[0014] In the clamping mechanism for the soft rubber product tensile testing device described above, the positioning structure is the first positioning part in the shape of concave and convex lines on the pressing plate.

[0015] Since the first positioning part has a concave and convex line structure, after the soft rubber product is clamped, the friction force between the soft rubber product and the pressing plate can be effectively increased under the action of the first positioning part, thereby improving the clamping stability.

[0016] In the clamping mechanism for the soft rubber product tensile testing device described above, the positioning structure further includes the second positioning part with concave and convex lines on the clamping part. The second positioning part is opposite to the first positioning part.

[0017] Since the second positioning part has a concave line structure, after the soft rubber product is clamped, the friction force between the soft rubber product and the main body clamping part can be effectively increased under the action of the second positioning part, thereby improving the clamping stability.

[0018] Of course, the first positioning part and the second positioning part are arranged opposite to each other. When the soft rubber product is clamped, relatively large frictional resistance exists on both sides of it, and finally the soft rubber product can be stably positioned and connected between the pressing plate and the clamping part of the main body.

[0019] In the clamping mechanism for the soft rubber product tensile testing device described above, the driving mechanism includes a lead screw and a lever. The middle part of the lead screw is passed through the upper part of the connecting part and the two are threadedly connected. The inner end of the lead screw is axially fixed to the pressing plate and the lead screw can rotate circumferentially relative to the pressing plate. The lever is vertically and fixedly connected to the outer end of the lead screw.

[0020] By driving the lead screw to rotate with the lever, since the lead screw is threadedly connected to the connecting part of the main body, during the rotation of the lead screw, it will move axially.

[0021] The inner end of the lead screw is axially fixed to the pressing plate. Therefore, when the lead screw rotates and axially displaces, the pressing plate will not rotate along with it, but the pressing plate will stably translate along the guide block.

[0022] In the clamping mechanism of the above-mentioned stretching test device for soft rubber products, the middle part of the lever penetrates and is fixedly connected to the lead screw, and both ends of the lever extend out of the side part of the lead screw.

[0023] Such a structure can facilitate the rotation of the lever.

[0024] In the clamping mechanism of the above-mentioned stretching test device for soft rubber products, the lower part of the pressing plate has a recessed connecting notch, and the above-mentioned guiding block matches the connecting notch, and the lower part of the pressing plate is sleeved on the guiding block.

[0025] Such a structure not only avoids the flipping of the pressing plate, but also enables the stable translation of the pressing plate.

[0026] In the clamping mechanism of the above-mentioned stretching test device for soft rubber products, the side part of the guiding block has a recessed guiding groove, the side wall of the connecting notch of the above-mentioned pressing plate has a guiding edge matching the guiding groove, and the above-mentioned guiding edge is embedded in the guiding groove.

[0027] The cooperation of the guiding groove and the guiding edge further improves the connection stability between the pressing plate and the guiding block, ensuring that the pressing plate can stably translate along the guiding block.

[0028] In the clamping mechanism of the above-mentioned stretching test device for soft rubber products, the first positioning part is located on the upper part of the pressing plate.

[0029] The first positioning part and the inner end of the lead screw are respectively located on both sides of the pressing plate. Such a structure can cause stress concentration and can clamp the soft rubber product more stably.

[0030] In the clamping mechanism of the above-mentioned stretching test device for soft rubber products, the outer side of the U-shaped bottom of the main body has a protruding connecting section.

[0031] The main body can be conveniently installed on the corresponding frame or driving part through the connecting section.

[0032] In the clamping mechanism of the above-mentioned stretching test device for soft rubber products, the connecting section and the main body are of an integral structure.

[0033] This can appropriately improve the structural compactness of the clamping mechanism.

[0034] Compared with the prior art, in the clamping mechanism of the stretching test device for soft rubber products of the present invention, since the soft rubber product can be stably clamped between the pressing plate and the clamping part of the main body, therefore, when this clamping mechanism is applied to the stretching test device, the soft rubber product to be tested can be stably clamped, and the soft rubber product will not fall off during the stretching process, and its stability is relatively high.

[0035] At the same time, since the guiding block and the pressing plate are both arranged at the U-shaped notch of the main body, the structure of the entire clamping mechanism is relatively compact and has high practical value. Brief Description of the Drawings

[0036] Figure 1 is a schematic three-dimensional structure diagram of the clamping mechanism in the stretching test device for soft rubber products of the present invention.

[0037] Figure 2 is a schematic front view structure diagram of the clamping mechanism in the stretching test device for soft rubber products of the present invention.

[0038] In the figure, 1 is the main body; 1a is the connecting part; 1b is the clamping part; 1b1 is the second positioning part; 1c is the connecting section; 2 is the guide block; 2a is the guide groove; 3 is the pressing plate; 3a is the first positioning part; 3b is the connecting notch; 3b1 is the guide edge; 4 is the lead screw; 5 is the lever. Detailed Embodiment

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly mounted on the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0042] Such as Figure 1 and Figure 2As shown in the figure, the clamping mechanism in the stretching test device for soft rubber products includes a main body 1, a guide block 2, a pressing plate 3 and a driving mechanism. The main body 1 is U-shaped, and the two sides of the U-shape of the main body 1 are respectively a connecting part 1a and a clamping part 1b. The guide block 2 is fixedly connected to the bottom of the U-shaped notch of the main body 1. The pressing plate 3 is located at the U-shaped notch of the main body 1, and the lower part of the pressing plate 3 is connected to the guide block 2. The driving mechanism is arranged between the connecting part 1a and the pressing plate 3. The driving mechanism can drive the pressing plate 3 to translate along the guide block 2. After translation, the pressing plate 3 can approach or move away from the clamping part 1b. There is a positioning structure between the pressing plate 3 and the clamping part 1b that can increase the frictional resistance.

[0043] The positioning structure is a positioning part one 3a with concave and convex patterns on the pressing plate 3.

[0044] The positioning structure further includes a positioning part two 1b1 with concave and convex patterns on the clamping part 1b. The positioning part two 1b1 is opposite to the positioning part one 3a.

[0045] The driving mechanism includes a lead screw 4 and a dial rod 5. The middle part of the lead screw 4 is passed through the upper part of the connecting part 1a and the two are threadedly connected. The inner end of the lead screw 4 is axially fixed to the pressing plate 3 and the lead screw 4 can rotate circumferentially relative to the pressing plate 3. The dial rod 5 is vertically and fixedly connected to the outer end of the lead screw 4.

[0046] The middle part of the dial rod 5 is passed through and fixedly connected to the lead screw 4, and both ends of the dial rod 5 extend out of the side part of the lead screw 4.

[0047] The lower part of the pressing plate 3 has a recessed connecting notch 3b. The guide block 2 is matched with the connecting notch 3b, and the lower part of the pressing plate 3 is sleeved on the guide block 2.

[0048] The side part of the guide block 2 has a recessed guide groove 2a. The side wall of the connecting notch 3b of the pressing plate 3 has a guide edge 3b1 that is matched with the guide groove 2a, and the guide edge 3b1 is embedded in the guide groove 2a.

[0049] The positioning part one 3a is located on the upper part of the pressing plate 3.

[0050] There is a protruding connecting section 1c on the outer side of the U-shaped bottom of the main body 1.

[0051] The connecting section 1c and the main body 1 are of an integral structure.

[0052] The clamping mechanism in the stretching test device for soft rubber products creatively sets a guide block and a pressing plate in the main body. Since the lower end of the pressing plate is connected to the guide block, under the action of the driving mechanism, the pressing plate can stably translate along the guide block.

[0053] The positioning structure is located between the pressing plate and the clamping part of the body. Therefore, after the driving part drives the pressing plate to translate, the gap between the pressing plate and the clamping part of the body becomes larger or smaller, so that the soft rubber product located there can be clamped or released.

[0054] During the clamping process of the soft rubber product, the positioning structure between the pressing plate and the clamping part can effectively increase the frictional resistance of the soft rubber product between the two, and finally the soft rubber product can be stably clamped and positioned.

[0055] This clamping mechanism is applied in a tensile testing device. One clamping mechanism is fixed on the frame, and the other clamping mechanism is connected to the driving part. When the two ends of the soft rubber product are respectively positioned and connected to the corresponding clamping mechanisms, the driving part drives one clamping mechanism away from the other clamping mechanism, so that the soft rubber product can be stably stretched.

[0056] After the soft rubber product is stretched, the testing device can obtain parameters such as its elongation rate and strength. How the elongation rate is calculated and how the strength is obtained are not the technical problems to be solved by this patent application. The problem to be solved by this patent application is how to stably clamp and position the smooth and flexible soft rubber product. Therefore, the technical features of the tensile testing device are not described in detail in the embodiments.

[0057] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0058] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as appropriate changes and variations are made to the above embodiments within the spirit of the present invention, they fall within the scope of protection required by the present invention.

Claims

1. A clamping mechanism used in a tensile testing device for soft rubber products, characterized in that: The clamping mechanism comprises a main body (1), a guide block (2), a pressure plate (3) and a driving mechanism. The main body (1) is U-shaped and the two sides of the U-shape of the main body (1) are a connecting portion (1a) and a clamping portion (1b) respectively. The guide block (2) is fixedly connected to the bottom of the U-shaped recess of the main body (1). The pressure plate (3) is located at the U-shaped recess of the main body (1) and the lower part of the pressure plate (3) is connected to the guide block (2). The driving mechanism is arranged between the connecting portion (1a) and the pressure plate (3). The driving mechanism can drive the pressure plate (3) to translate along the guide block (2). After the translation, the pressure plate (3) can approach or move away from the clamping portion (1b). A positioning structure capable of increasing friction resistance is provided between the pressure plate (3) and the clamping portion (1b).

2. The clamping mechanism used in the soft rubber product tensile testing device according to claim 1, characterized in that: The positioning structure is a positioning portion (3a) with concave-convex patterns on the pressing plate (3).

3. The clamping mechanism used in the soft rubber product tensile testing device according to claim 2, characterized in that: The positioning structure also includes a second positioning portion (1b1) with concave-convex patterns on the clamping portion (1b), and the second positioning portion (1b1) is directly opposite to the first positioning portion (3a).

4. The clamping mechanism used in the soft rubber product tensile testing device according to claim 3, characterized in that: The driving mechanism comprises a screw rod (4) and a lever (5), the middle portion of the screw rod (4) being inserted through the upper portion of the connecting portion (1a) and the two being threadedly connected, the inner end of the screw rod (4) being axially fixed to the pressing plate (3) and the screw rod (4) being rotatable circumferentially relative to the pressing plate (3), and the lever (5) being vertically fixed to the outer end of the screw rod (4).

5. The clamping mechanism used in the soft rubber product tensile testing device according to claim 4, characterized in that: The middle part of the shifting rod (5) is penetrated and fixedly connected to the screw rod (4), and both ends of the shifting rod (5) extend out of the side of the screw rod (4).

6. The clamping mechanism used in the soft rubber product tensile testing device according to claim 5, characterized in that: The lower part of the pressing plate (3) has a concave connecting notch (3b), the guide block (2) matches the connecting notch (3b) and the lower part of the pressing plate (3) is sleeved on the guide block (2).

7. The clamping mechanism used in the soft rubber product tensile testing device according to claim 6, characterized in that: The guide block (2) has a concave guide groove (2a) on its side, and the pressure plate (3) has a guide edge (3b1) matching the guide groove (2a) on its side wall where it connects to the recess (3b), and the guide edge (3b1) is embedded in the guide groove (2a).

8. The clamping mechanism used in the soft rubber product tensile testing device according to claim 7, characterized in that: The positioning portion 1 (3a) is located on the upper part of the pressing plate (3).

9. The clamping mechanism used in the soft rubber product tensile testing device according to claim 8, characterized in that: The outer side of the U-shaped bottom of the main body (1) is provided with a protruding connection section (1c).

10. The clamping mechanism used in the soft rubber product tensile testing device according to claim 9, characterized in that: The connecting section (1c) and the main body (1) are an integrated structure.

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