Plastic foam strength detection device

Abstract

The utility model discloses a plastic foam strength detection device, which belongs to the technical field of detection equipment, and comprises a clamp, the clamp comprises a left block and a right block, the right block is provided with a positioning assembly, the positioning assembly comprises a fixed block, a connecting block and a sliding block, the fixed block is fixedly arranged on the right block, a cavity is formed in the fixed block, and the connecting block is connected with the sliding block. A cavity is formed in the left block, the connecting block slides in the cavity, a guide groove is formed in one side of the cavity, the sliding block slides in the guide groove and is fixedly connected with the connecting block, an opening is formed in the end, close to the left block, of the cavity, and when the sliding block slides towards one side of the left block, the connecting block extends out of the opening. The device has the advantage that the detection accuracy of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, specifically a plastic foam strength testing device. Background Technology

[0002] A plastic foam tensile strength tester is a specialized device used to measure the tensile strength of plastic foam materials. It is primarily used to test the tensile properties of rigid or flexible foam plastics, measuring parameters such as maximum tensile stress, elongation at break, and tensile strength. These parameters are crucial for evaluating the mechanical properties of foam materials, which are widely used in building materials, packaging materials, and industrial products.

[0003] The existing plastic foam tensile strength tester includes a support, two clamps, a test control system, and a drive system. The support has a slide rail with a lifting frame slidingly mounted in it. One clamp is connected to the lifting frame, and the other clamp is mounted on the support. In use, the object to be tested is clamped between the two clamps, and the test control system controls the drive to start measuring the object.

[0004] However, when clamping the object to be tested, the clamping lengths of the two clamps may deviate, and it is difficult to keep the clamping positions uniform, which will affect the detection accuracy of the detection device.

[0005] Based on this, the present invention designs a plastic foam strength testing device to solve the above problems. Utility Model Content

[0006] To achieve the above objectives, the present invention provides the following technical solution: the clamp includes a left block and a right block, and a positioning component is provided on the right block. The positioning component includes a fixing block, a connecting block, and a slider. The fixing block is fixedly disposed on the right block. A cavity is formed in the fixing block. The connecting block slides in the cavity. A guide groove is formed on one side of the cavity. The slider slides in the guide groove. The slider is fixedly connected to the connecting block. An opening is provided at one end of the cavity near the left block. When the slider slides toward one side of the left block, the connecting block extends out from the opening.

[0007] By adopting the above technical solution, when clamping the object to be tested, the corresponding slider is first slid according to the size of the object to be tested, so that the slider drives the connecting block to begin sliding in the cavity. One end of the connecting block extends out of the opening. At this time, one end of the object to be tested is placed into the fixture, so that the top of the object to be tested abuts against the lower surface of the connecting block, so that the length of the object to be tested in the fixture is fixed. After clamping the fixture, the other end of the object to be tested is clamped in the same way, so that the actual clamping length on both sides of the object to be tested is the same. During testing, the force on the object to be tested is more uniform, which improves the accuracy of the testing device.

[0008] Preferably, a plurality of limiting blocks are fixedly provided on the left block, the limiting blocks are correspondingly provided with the fixed blocks, and the limiting blocks are provided with clearance holes. When the slider abuts against the side of the guide groove near the left block, one end of the connecting block enters the clearance hole.

[0009] By adopting the above technical solution, the other end of the connecting block enters the clearance hole, so that the limiting block can support the connecting block, prevent the connecting block from tilting after being resisted, and improve the stability of the positioning component.

[0010] Preferably, positioning components are symmetrically arranged on both sides of the clamp.

[0011] By adopting the above technical solution, when the object to be tested enters the fixture, it can abut against the positioning components on both sides of the fixture, and the top of the object to be tested can be better kept flush with the horizontal plane, so that the object to be tested can be fixed in the fixture in a more standardized manner.

[0012] Preferably, a clamping block is fixedly provided on the side of the guide groove near the left block.

[0013] By adopting the above technical solution, after the slider slides to one end close to the left block, the abutting block and the slider abut against each other, so that the slider can maintain a stable state and will not easily slide, further increasing the stability of the positioning component.

[0014] Preferably, the lower surface of the connecting block is coated with a smooth layer.

[0015] By adopting the above technical solution, the friction between the connecting block and the object being tested is reduced, preventing the object from becoming skewed during the clamping process.

[0016] In summary, this application has the following beneficial technical effects: When clamping the object to be tested, the corresponding slider is first slid according to the size of the object to be tested, so that the slider drives the connecting block to begin sliding in the cavity. One end of the connecting block extends out of the opening. At this time, one end of the object to be tested is placed into the fixture, so that the top of the object to be tested abuts against the lower surface of the connecting block, so that the length of the object to be tested in the fixture is fixed. After clamping the fixture, the other end of the object to be tested is clamped in the same way, so that the actual clamping length on both sides of the object to be tested is the same. During testing, the force on the object to be tested is more uniform, which improves the accuracy of the testing device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0019] Figure 2 This is a schematic diagram of the fixture holding the object to be tested in this embodiment;

[0020] Figure 3 This is a schematic diagram of the fixture structure in this embodiment.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Bracket; 2. Positioning component; 21. Fixing block; 22. Connecting block; 23. Slider; 3. Fixture; 31. Right block; 32. Left block; 4. Limiting block; 5. Clearing hole; 6. Guide groove; 7. Cavity; 8. Opening; 9. Smooth layer; 10. Pressing block; 11. Detection object. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0025] A plastic foam strength testing device includes a support 1, two clamps 3, a test control system and a drive system. The support 1 has a slide rail, and a lifting frame is slidably arranged in the slide rail. One clamp 3 is connected to the lifting frame, and the other clamp 3 is correspondingly arranged on the support 1.

[0026] The clamp 3 includes a left block 32 and a right block 31. A positioning component 2 is provided on the right block 31. The positioning component 2 includes a fixing block 21, a connecting block 22 and a slider 23. The fixing block 21 is fixedly disposed on the right block 31. A cavity 7 is provided in the fixing block 21. The connecting block 22 slides in the cavity 7. A guide groove 6 is provided on one side of the cavity 7. The slider 23 slides in the guide groove 6. The slider 23 is fixedly connected to the connecting block 22. An opening 8 is provided at one end of the cavity 7 near the left block 32. Several limiting blocks 4 are fixedly disposed on the left block 32. The limiting blocks 4 are correspondingly disposed to the fixing block 21. The limiting blocks 4 are provided with clearance holes 5.

[0027] In use, the object to be tested 11 is first clamped in the clamp 3 on the lifting frame. According to the actual size of the object to be tested 11, the corresponding slider 23 is slid so that the slider 23 slides along the guide groove 6 towards the left block 32. When the slider 23 slides, the connecting block 22 also slides out of the cavity 7. One end of the connecting block 22 extends out from the opening 8. When the slider 23 slides to the other end of the guide groove 6, one end of the connecting block 22 enters the clearance hole 5. At this time, the clamping length of the clamp 3 is controlled between the opening 8 and the lower surface of the connecting block 22. Then, one end of the object to be tested 11 is placed from bottom to top between the left block 32 and the right block 31, so that the top of the object to be tested 11 abuts against the lower surface of the connecting block 22. Then, the clamp 3 is clamped. The clamp 3 on the other side of the bracket 1 is clamped in the same way to keep the two ends of the object to be tested 11 with the same clamping length, so that the object to be tested 11 is subjected to more uniform force during the testing process, which improves the detection accuracy of the detection device.

[0028] Positioning components 2 are symmetrically arranged on both sides of the clamp 3. Before clamping the object 11, the positioning components 2 on both sides of the clamp 3 are adjusted to the same height so that the top of the object 11 is less likely to be skewed when it abuts against the lower surface of the connecting block 22, and the object 11 can be fixed more properly in the clamp 3. A clamping block 10 is fixedly arranged on the guide groove 6 near the left block 32. After the slider 23 slides to the end near the left block 32, the clamping block 10 and the slider 23 abut against each other, so that the slider 23 can maintain a stable state and will not easily slide, further increasing the stability of the positioning components 2. A smooth layer 9 is attached to the lower surface of the connecting block 22. When the clamp 3 clamps, the smooth layer 9 contacts the upper surface of the object 11, which can reduce the friction between the connecting block 22 and the object 11 and prevent the object 11 from being skewed during the clamping process.

[0029] The implementation principle of this embodiment is as follows: When in use, the object to be tested 11 is first clamped in the clamp 3 on the lifting frame. According to the actual size of the object to be tested 11, the corresponding slider 23 is slid so that the slider 23 starts to slide along the guide groove 6 towards the left block 32. When the slider 23 slides, the connecting block 22 also slides out from the cavity 7. One end of the connecting block 22 extends out from the opening 8. When the slider 23 slides to the other end of the guide groove 6, one end of the connecting block 22 enters the clearance hole 5. At this time, the clamping length of the clamp 3 is controlled between the opening 8 and the lower surface of the connecting block 22. Then, one end of the object to be tested 11 is placed from bottom to top between the left block 32 and the right block 31, so that the top of the object to be tested 11 touches the lower surface of the connecting block 22, and then the clamp 3 is clamped.

[0030] The clamp 3 on the other side of the bracket 1 also clamps the test object 11 in the same way, so that the two ends of the test object 11 maintain the same clamping length, making the force on the test object 11 more uniform during the test. After the test object 11 is clamped, the test control system controls the drive to start measuring the test object 11.

[0031] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the strength of a plastic foam, comprising a support (1) and two clamps (3) for clamping a test object (11), characterized in that: The clamp (3) comprises a left block (32) and a right block (31), the right block (31) is provided with a positioning assembly (2), the positioning assembly (2) comprises a fixed block (21), a connecting block (22) and a sliding block (23), the fixed block (21) is fixedly arranged on the right block (31), a cavity (7) is formed in the fixed block (21), the connecting block (22) is located in the cavity (7) and slides, a guide groove (6) is formed in one side of the cavity (7), the sliding block (23) is located in the guide groove (6) and slides, the sliding block (23) is fixedly connected with the connecting block (22), and the cavity (7) is provided with an opening (8) at one end close to the left block (32); when one side of the sliding block (23) slides towards the left block (32), the connecting block (22) extends out of the opening (8).

2. A device for detecting the strength of a plastic foam according to claim 1, characterized in that: A plurality of limiting blocks (4) are fixedly arranged on the left block (32) and correspond to the fixed block (21), a gap (5) is formed in the limiting block (4), and when the sliding block (23) abuts against one side of the guide groove (6) close to the left block (32), one end of the connecting block (22) enters the gap (5).

3. A device for detecting the strength of a plastic foam according to claim 1, characterized in that: The clamp (3) is provided with the positioning assembly (2) on both sides in a symmetrical mode.

4. The apparatus of claim 1, wherein: The guide groove (6) is fixedly provided with an abutting block (10) on one side close to the left block (32).

5. The apparatus of claim 1, wherein: A smooth layer (9) is attached to the lower surface of the connecting block (22).

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