IXPE material high-elasticity impact resistance testing device

Abstract

The invention relates to the technical field of IXPE material strong elasticity testing, in particular to an IXPE material strong elasticity impact resistance testing device which comprises a testing seat, a positioning assembly, a testing mechanism, a feeding pipe and a gear transmission assembly, and the positioning assembly comprises a positioning seat fixed in the testing seat and a positioning plate arranged in the positioning seat; the testing mechanism comprises a testing seat elastically connected to the lower portion of the inner side of the positioning seat and a pressure sensor arranged below the testing seat, the feeding pipe is connected to the inner side of the testing seat and located above the positioning plate, a through hole vertically communicated with the feeding pipe is formed in the positioning plate, an insertion opening is formed in the radial direction of the feeding pipe, a testing piece is arranged in the feeding pipe, and the pressure sensor is arranged below the testing seat. The insertion rod is arranged in the insertion opening, the inner end of the insertion rod enters the feeding pipe to form a release condition for a test piece, sample locking and fixing and testing are synchronous, step-by-step operation is not needed compared with the prior art, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of IXPE material strong elasticity testing, in particular to a device for testing the strong elasticity and impact resistance of IXPE material. Background Art

[0002] IXPE is a high-performance foam material that uses electron beams or chemical crosslinking agents to create a three-dimensional network structure between polyethylene molecular chains. The IXPE production process involves mixing low-density polyethylene (LDPE) or modified LDPE resin with a foaming agent and other auxiliary materials, followed by extrusion molding. Next, a high-energy electron beam generated by an electron accelerator modifies the LDPE molecular structure, forming a tight three-dimensional network. Finally, high-temperature foaming is used to create a closed-cell foam material with excellent thermal insulation, sound insulation, and cushioning properties.

[0003] To understand the impact strength of IXPE materials, patent application number CN202121943416.9 discloses a strong elastic impact test device for IXPE materials. The device pulls a partition outward from a square slot, and a ball is dropped onto the IXPE material, impacting it. The surface condition of the plastic sheet beneath the IXPE is then checked, allowing for a quick and clear understanding of the IXPE material's impact strength. However, this device presents the following problems:

[0004] The positioning of the IXPE material and the dropping of the ball are both purely manual. Before the test, the IXPE material is manually fixed, and then the ball is manually controlled to drop onto the IXPE material. The test process needs to be completed manually in two steps, that is, the material positioning and testing actions cannot be performed synchronously, affecting test efficiency. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides an IXPE material strong elasticity and impact resistance testing device, including a test seat, a positioning assembly, a testing mechanism, a feed pipe and a gear transmission assembly, the positioning assembly including a positioning seat fixed in the test seat and a positioning plate arranged in the positioning seat, the testing mechanism including a test seat elastically connected to the lower inner side of the positioning seat and a pressure sensor arranged below the test seat, the feed pipe is connected to the inner side of the test seat and is located above the positioning plate, the positioning plate is provided with a through hole communicating with the feed pipe up and down, a socket is provided in the radial direction of the feed pipe, a test piece is provided in the feed pipe, a plug rod is provided in the socket, the inner end of the plug rod enters the feed pipe to constitute a release condition for the test piece, one end of the gear transmission assembly is connected to the positioning plate and can be raised and lowered with the positioning plate, and the other end of the gear transmission assembly is operably connected to the plug rod.

[0006] As a further preference, the test seat includes a base plate and left and right columns fixed on the top surface of the base plate, a fixing frame is installed between the left and right columns, the feed pipe is fixed in the middle of the fixing frame, and the axis of the tube cavity of the feed pipe is collinear with the axis of the through hole.

[0007] As a further preference, the positioning seats are symmetrical on the left and right and are fixed on the two columns respectively. Clamping grooves are provided on the opposite surfaces of the two positioning seats. A cylinder is installed on at least one positioning seat. The actuating end of the cylinder enters the clamping groove vertically downward, one end of the positioning plate enters the clamping groove on the left and is connected to the actuating end of the cylinder, and the other end of the positioning plate enters the clamping groove on the right horizontally and slides into the clamping groove on the right.

[0008] As a further preference, an extension plate is fixed to the bottom of the left and right positioning seats, a guide seat is installed between the two extension plates, a guide sleeve is installed on the guide seat, a test rod is provided at the bottom of the test seat, the test rod is assembled downward in the guide sleeve, a spring is elastically connected between the bottom surface of the test seat and the guide seat, the spring sleeve is provided on the test rod, and the detection end of the pressure sensor is vertically upward and close to the bottom end of the test rod.

[0009] As a further preferred embodiment, the test seat is a horizontal plate, and when the spring is fully released, the top surface of the test seat is flush with the bottoms of the left and right clamping grooves.

[0010] As a further preferred embodiment, the gear transmission assembly includes a first rack, a second rack, a transfer gear and a spring seat, the transfer gear is connected in the test seat, the bottom end of the first rack is fixed vertically downward on the positioning plate, the top end of the first rack is engaged vertically upward on one side of the transfer gear, the second rack is fixed on the bottom surface of the insertion rod, the inner end of the second rack enters the socket with the insertion rod, the outer end of the second rack is engaged on the top of the transfer gear, the inner end of the spring seat is fixed on the feed pipe, and the outer end of the spring seat is connected to the outer end of the insertion rod.

[0011] As a further preferred embodiment, a vertical groove is provided on the inner wall of the tube cavity of the feed tube, and a clamping portion larger than the groove width is provided at the bottom of the vertical groove. An elastic baffle is installed in the vertical groove, and a limiting portion smaller than the width is provided at the bottom end of the elastic baffle. The limiting portion extends downward and contacts the inner end of the insertion rod. Under the pushing action of the outer end of the spring seat, the inner end of the insertion rod is pushed toward the axis direction of the feed tube, and the limiting portion is pushed by the inner end of the insertion rod, so that the limiting portion deflects toward the axis of the feed tube with the clamping portion as the deflection point, and the clamping portion is close to the top end of the feed tube.

[0012] As further preferred, the test piece is a solid sphere.

[0013] The beneficial effects of the present invention compared to the prior art are:

[0014] During the test, a piece of IXPE material sample is cut from the IXPE material and placed in the positioning seat. The positioning plate descends and quickly locks the test position on the positioning seat. At this time, the sample is under the feed pipe and is also within the falling range of the test piece. At the moment when the sample is quickly locked by the positioning plate, the positioning plate will also drive the gear transmission assembly and drag the rod outward along the socket through the other end of the gear transmission assembly, so that the inner end of the rod is away from the axis of the feed pipe and close to the side wall of the feed pipe. At this time, the inner end of the rod no longer constitutes a restriction on the test piece, and the test piece loses weight and It falls with acceleration along the lumen of the feed tube, and eventually falls freely through the through hole onto the sample, forming a detection point on the sample. The detection point causes the surrounding area of the sample to undergo plastic deformation downward, and in particular, the degree of plastic deformation of the detection point is greater, until its bottom surface falls on the pressure sensor. The pressure sensor detects the pressure signal and feeds the pressure signal back to the detection module of the third-party controller, which displays the pressure value. The elastic impact resistance of the sample is obtained based on this pressure value, and the elastic impact resistance of the batch of IXPE materials is obtained based on this elastic impact resistance. In this testing device, the inner end of the insertion rod is inserted into the lumen of the feed tube before testing to confine the test piece in the feed tube, and when the positioning plate locks the sample, it drives the gear transmission assembly, which drags the insertion rod outward through the gear transmission assembly, causing the test piece to fall freely synchronously and complete the test. The present invention can quickly complete the test when the sample is positioned, and the locking and fixing of the sample and the test are synchronized. Compared with the existing technology, it does not require step-by-step operation, which improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the internal structure of a cross-section of an IXPE material strong elasticity and impact resistance testing device provided in an embodiment of the present invention;

[0016] Figure 2 An IXPE material strong elasticity and impact resistance testing device provided by the embodiment of the present invention is composed of Figure 1 The enlarged schematic diagram of part A is shown;

[0017] Figure 3 A schematic structural diagram of an IXPE material strong elasticity and impact resistance testing device provided in an embodiment of the present invention, in which only a vertical groove is provided on the inner side wall of a feed pipe and an elastic baffle is provided in the vertical groove.

[0018] In the figure: 10, test seat; 110, base plate; 120, column; 130, fixing frame; 20, positioning assembly; 210, positioning seat; 211, clamping groove; 212, extension plate; 213, guide seat; 214, guide sleeve; 215, cylinder; 220, positioning plate; 221, through hole; 30, testing mechanism; 310, bearing plate; 311, test rod; 312, spring; 320, pressure sensor; 40, feeding pipe; 410, socket; 420, test piece; 430, insertion rod; 440, vertical slot; 441, clamping part; 442, elastic baffle; 443, limiting part; 50, gear transmission assembly; 510, first rack; 520, second rack; 530, transmission gear; 540, spring seat. DETAILED DESCRIPTION

[0019] The above and other embodiments and advantages of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments.

[0020] In one embodiment, Figure 1-Figure 3 As shown:

[0021] The present embodiment provides an IXPE material strong elasticity and impact resistance testing device, including a test seat 10, a positioning assembly 20, a testing mechanism 30, a feeding pipe 40 and a gear transmission assembly 50, wherein the positioning assembly 20 includes a positioning seat 210 fixed in the test seat 10 and a positioning plate 220 arranged in the positioning seat 210, the testing mechanism 30 includes a supporting plate 310 elastically connected to the lower inner side of the positioning seat 210 and a pressure sensor 320 arranged below the supporting plate 310, the feeding pipe 40 is connected to the inner side of the test seat 10 and is located on the positioning plate. Above 220, a through hole 221 communicating with the feed pipe 40 up and down is opened on the positioning plate 220, and a socket 410 is opened in the radial direction of the feed pipe 40. A test piece 420 is provided in the feed pipe 40, and the test piece 420 is a solid sphere. An insertion rod 430 is provided in the socket 410, and the inner end of the insertion rod 430 enters the feed pipe 40 to constitute a release condition for the test piece 420. One end of the gear transmission assembly 50 is connected to the positioning plate 220 and can be raised and lowered with the positioning plate 220. The other end of the gear transmission assembly 50 is operably connected to the insertion rod 430.

[0022] The test seat 10 includes a base plate 110 and left and right columns 120 fixed on the top surface of the base plate 110. A fixing frame 130 is installed between the left and right columns 120. The feed tube 40 is fixed in the middle of the fixing frame 130, and the axis of the tube cavity of the feed tube 40 is collinear with the axis of the through hole 221.

[0023] The test piece 420 is located in the feed tube 40, and the inner end of the insertion rod 430 is inserted into the feed tube 40, which restricts the test piece 420 in the feed tube 40, which is equivalent to putting the test piece 420 in a state of waiting to fall due to weightlessness. During the test, a piece of IXPE material sample (hereinafter referred to as the sample) is cut from the IXPE material and placed in the positioning seat 210. The positioning plate 220 descends and quickly locks the test position on the positioning seat 210. At this time, the sample is below the feed tube 40 and is also within the falling range of the test piece 420. At the moment when the sample is quickly locked by the positioning plate 220, the positioning plate 220 will also drive the gear transmission assembly 50, and drag the insertion rod 430 outward along the socket 410 through the other end of the gear transmission assembly 50, so that the inner The end is away from the axis of the feed tube 40 and leans against the side wall of the feed tube 40. At this time, the inner end of the insertion rod 430 no longer restricts the test piece 420. The test piece 420 loses weight and falls along the tube cavity of the feed tube 40 with acceleration. It finally passes through the through hole 221 and falls freely onto the sample, forming a detection point on the sample. The detection point causes the peripheral area of the sample to undergo plastic deformation downward, especially the degree of plastic deformation of the detection point is greater, until its bottom surface falls on the pressure sensor 320. The pressure sensor 320 detects the pressure signal and feeds the pressure signal back to the detection module of the third-party controller to display the pressure value. The elastic impact resistance of the sample is known based on this pressure value, and the elastic impact resistance of the batch of IXPE materials is known based on the elastic impact resistance. In this testing device, before testing, the inner end of the insertion rod 430 is inserted into the lumen of the feed tube 40, confining the test piece 420 within the feed tube 40. When the positioning plate 220 secures the specimen, it drives the gear transmission assembly 50, which then pulls the insertion rod 430 outward, causing the test piece 420 to fall freely and complete the test. This method allows for rapid testing once the specimen is positioned, synchronizing specimen locking and testing. This eliminates the need for separate steps compared to existing techniques, improving work efficiency.

[0024] like Figure 1As shown, the positioning seats 210 are symmetrical on the left and right and are fixed on the two columns 120 respectively. The opposite surfaces of the two positioning seats 210 are provided with clamping grooves 211. A cylinder 215 is installed on at least one positioning seat 210. The actuating end of the cylinder 215 enters the clamping groove 211 vertically downward, so that the clamping groove 211 has a locking function. One end of the positioning plate 220 enters the clamping groove 211 on the left and is connected to the actuating end of the cylinder 215. The other end of the positioning plate 220 enters the clamping groove 211 on the right horizontally and slides in the clamping groove 211 on the right through a slide rail structure. The clamping power of the positioning plate 220 comes from the cylinder 215, which places the left end of the sample in the clamping groove 211 of the left positioning seat 210, and the right end of the sample in the clamping groove 211 of the right positioning seat 210, and ventilates the cylinder 215. The cylinder 215 locks the same side end of the positioning plate 220 relative to the clamping groove 211 and locks the end of the sample in the clamping groove 211. The other end of the positioning plate 220 is locked along the clamping groove 211 on the other side, locking the other end of the sample in the clamping groove 211 on the other side of the positioning seat 210. The two ends of the sample are locked to ensure that the top surface of the sample is parallel to the positioning plate 220. After the positioning plate 220 locks the sample, it ensures that the middle area of the sample corresponds to between the through hole 221 and the supporting plate 310. After the test piece 420 falls, it can accurately fall on the middle area of the sample, ensuring that the plastic deformation of the middle area of the sample is fed back to the pressure sensor 320 to complete accurate detection. One end of the positioning plate 220 is connected to the action rod of the cylinder 215, and the other end is engaged in the clamping groove 211 on the other side through the slide rail structure to ensure that the positioning plate 220 is raised and lowered smoothly. At the same time, a cylinder 215 is used as a power source to provide power to the positioning plate 220 to meet the requirements of double-end clamping and locking of the specimen.

[0025] like Figure 1 、 Figure 2As shown, an extension plate 212 is fixed to the bottom of the left and right positioning seats 210, a guide seat 213 is installed between the two extension plates 212, a guide sleeve 214 is installed on the guide seat 213, a test rod 311 is provided at the bottom of the supporting plate 310, the test rod 311 is downwardly assembled in the guide sleeve 214, a spring 312 is elastically connected between the bottom surface of the supporting plate 310 and the guide seat 213, the spring 312 is sleeved on the test rod 311, and the detection end of the pressure sensor 320 is vertically upward and close to the bottom end of the test rod 311. The guide sleeve 214 provides vertical guidance for the test rod 311, ensuring that the top support plate 310 is positioned on the bottom side of the sample. The spring 312 provides elastic support for the bottom surface of the support plate 310. When the test piece 420 falls, it passes through the through hole 221 and first falls onto the middle area of the sample. The middle area of the sample plastically deforms downward and then feedback is sent to the support plate 310. The support plate 310 squeezes the spring 312, causing the spring 312 to compress and shorten. At the moment when the spring 312 is compressed and shortened, the support plate 310 pushes the test rod 311 down. When the test rod 311 descends, its bottom end touches the detection end of the pressure sensor 320 and feedbacks a pressure signal. With the spring 312 elastically supporting the support plate 310 and the support plate 310 providing for the bottom surface of the sample, test piece 420 falls onto the sample, generating a pressure signal, but does not roll freely to the ground. After the test is complete, test piece 420 is pressed firmly, causing it to push the support plate 310 downward. Once the test piece 420 reaches the bottom of the feed tube 40, it is retrieved and reused. To test the next IXPE material, a sample is cut from the next IXPE material, secured in the same manner, and tested in the same manner. The elasticity and impact resistance of the two IXPE materials are determined based on the extent of the support plate 310's descent and the pressure signal fed back to the pressure sensor 320 from the bottom of the test rod 311. This same method can be used to test N types or batches of IXPE materials. When the test is completed and the test piece 420 is taken back into the feed tube 40, the pressure on the sample disappears, the cylinder 215 is de-energized, and its actuating rod moves up with the positioning plate 220, the spring 312 rebounds and becomes longer, and pushes the supporting plate 310 to rise back to the initial position, waiting for the next test.

[0026] like Figure 1 、 Figure 2 As shown, the supporting plate 310 is a horizontal plate. When the spring 312 is fully released, the top surface of the supporting plate 310 is flush with the bottom of the left and right clamping grooves 211. When the spring 312 is fully released, there is no pressure on the supporting plate 310, and the test piece 420 has not fallen on the sample, and has not been tested. When the sample is installed and the two ends are not fixed, and the positioning plate 220 is not lowered and locked, the top surface of the supporting plate 310 is flush with the bottom of the two clamping grooves 211, and the bottom surface of the sample is supported by the top surface of the supporting plate 310 to ensure that the sample is level.

[0027] like Figure 1 、 Figure 2 As shown, the gear transmission assembly 50 includes a first rack 510, a second rack 520, a transfer gear 530 and a spring seat 540. The transfer gear 530 is connected to the test seat 10. The bottom end of the first rack 510 is fixed vertically downward on the positioning plate 220, and the top end of the first rack 510 is engaged vertically upward on one side of the transfer gear 530. The second rack 520 is fixed on the bottom surface of the insertion rod 430. The inner end of the second rack 520 enters the socket 410 with the insertion rod 430, and the outer end of the second rack 520 is engaged on the top of the transfer gear 530. The inner end of the spring seat 540 is fixed on the feed tube 40, and the outer end of the spring seat 540 is connected to the outer end of the insertion rod 430. The structure of the gear transmission assembly 50 is disclosed. When the positioning plate 220 descends and fixes the two ends of the sample in the clamping grooves 211 of the left and right positioning seats 210, the first rack 510 will descend along with the positioning plate 220 and use the tooth surface to engage the transmission gear 530 to rotate clockwise. The transmission gear 530 engages the second rack 520 and moves to the right. The second rack 520 drives the insertion rod 430 to move outward, so that the inner end of the insertion rod 430 leaves the axis of the feed tube 40, so that the bottom of the test piece 420 loses its restriction, so that the test piece 420 is free and falls quickly onto the sample after the sample is locked, completing the impact resistance test of the sample. After the test is completed, the positioning plate 220 rises, and the left and right ends of the sample are freed. The sample is taken out and replaced with the next batch or the next type of IXPE material sample, so that the left and right ends are reinstalled into the left and right clamping grooves 211. When the positioning plate 220 rises, the first rack 510 also rises, and the first rack 510 will engage the transmission gear 530 and rotate counterclockwise. The transmission gear 530 engages the second rack 520, and the second rack 520 drives the insertion rod 430, so that the inner end of the insertion rod 430 retreats into the feed tube 40, so that the test piece 420 picked up again in the feed tube 40 is repositioned. The setting of the spring seat 540 ensures that the second rack 520 can effectively retreat when the transmission gear 530 rotates clockwise. That is, when the second rack 520 moves outward, the outer end is used to push the spring seat 540 to elastically stretch linearly. When the transmission gear 530 rotates counterclockwise, it ensures that the second rack 520 can effectively retreat into the feed tube 40 with the insertion rod 430.

[0028] like Figure 3As shown, a vertical groove 440 is provided on the inner wall of the tube cavity of the feed tube 40, and a clamping portion 441 larger than the groove width is provided at the bottom of the vertical groove 440. An elastic baffle 442 is installed in the vertical groove 440, and the bottom end of the elastic baffle 442 is provided with a limiting portion 443 limited to the inner side of the clamping portion 441. The bottom end of the elastic baffle 442 extends downward from the limiting portion 443 and contacts the inner end of the insertion rod 430. Under the pushing action of the outer end of the spring seat 540, the inner end of the insertion rod 430 is pushed toward the axial direction of the feed tube 40, and the limiting portion 443 is pushed by the inner end of the insertion rod 430, so that the limiting portion 443 deflects toward the axis of the feed tube 40 with the clamping portion 441 as the deflection point, and the clamping portion 441 is close to the top end of the feed tube 40. The bottom end of the vertical slot 440 is connected to the inner end of the socket 410. When the inner end of the insertion rod 430 enters the axis position of the tube cavity of the feeding tube 40, the elastic baffle 442 is pushed toward the axis of the feeding tube 40. The deviation of the elastic baffle 442 is used to limit the test piece 420 to the upper position of the tube cavity, that is, the test piece 420 is at a higher position from the sample. After the inner end of the insertion rod 430 moves outward, the elastic baffle 442 will lose its restriction and rebound into the vertical slot 440 using its elastic rebound characteristics. The test piece 420 loses its restriction and falls onto the sample in a high-position weightlessness acceleration manner to complete the test, thereby improving the detection effect.

[0029] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described based on their actual installation and actual use, as well as the customary orientations of those skilled in the art. This is hereby explained.

[0030] The specific embodiments described above further illustrate the purpose of the present invention, technical solutions, and beneficial effects. It should be understood that the above description is merely a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. In particular, it should be noted that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for testing the strong elasticity and impact resistance of IXPE materials, comprising a test seat (10), a positioning assembly (20), a testing mechanism (30), a feeding pipe (40), and a gear transmission assembly (50), wherein the positioning assembly (20) comprises a positioning seat (210) fixed in the test seat (10) and a positioning plate (220) arranged in the positioning seat (210), characterized in that: The test mechanism (30) comprises a supporting plate (310) elastically connected to the inner side and lower side of the positioning seat (210) and a pressure sensor (320) arranged below the supporting plate (310); a feed pipe (40) is connected to the inner side of the test seat (10) and is located above the positioning plate (220); a through hole (221) communicating with the feed pipe (40) from top to bottom is provided on the positioning plate (220); a socket (410) is provided in the radial direction of the feed pipe (40); a test piece (420) is provided in the feed pipe (40); a plug rod (430) is provided in the socket (410); the inner end of the plug rod (430) enters the feed pipe (40) to form a release condition for the test piece (420); one end of the gear transmission assembly (50) is connected to the positioning plate (220) and can be raised and lowered along with the positioning plate (220); the other end of the gear transmission assembly (50) is operably connected to the plug rod (430).

2. The IXPE material strong elasticity and impact resistance testing device according to claim 1, characterized in that: The test seat (10) comprises a base plate (110) and two left and right columns (120) fixed on the top surface of the base plate (110), a fixing frame (130) is installed between the left and right columns (120), a feed pipe (40) is fixed in the middle of the fixing frame (130), and the axis of the tube cavity of the feed pipe (40) is collinear with the axis of the through hole (221).

3. The IXPE material strong elasticity and impact resistance testing device according to claim 2, characterized in that: The positioning seats (210) are symmetrical in two places and are fixed on the two columns (120) respectively. The opposite surfaces of the two positioning seats (210) are provided with clamping grooves (211). A cylinder (215) is installed on at least one positioning seat (210). The action end of the cylinder (215) vertically enters the clamping groove (211) downward, and one end of the positioning plate (220) enters the clamping groove (211) on the left and is connected to the action end of the cylinder (215). The other end of the positioning plate (220) enters the clamping groove (211) on the right horizontally and slides in the clamping groove (211) on the right.

4. The IXPE material strong elasticity and impact resistance testing device according to claim 3, characterized in that: An extension plate (212) is fixed to the bottom of the left and right positioning seats (210), a guide seat (213) is installed between the two extension plates (212), a guide sleeve (214) is installed on the guide seat (213), a test rod (311) is provided at the bottom of the bearing plate (310), the test rod (311) is assembled downward in the guide sleeve (214), a spring (312) is elastically connected between the bottom surface of the bearing plate (310) and the guide seat (213), the spring (312) is sleeved on the test rod (311), and the detection end of the pressure sensor (320) is vertically upward and close to the bottom end of the test rod (311).

5. The IXPE material strong elasticity and impact resistance testing device according to claim 4, characterized in that: The bearing plate (310) is a horizontal plate. When the spring (312) is fully released, the top surface of the bearing plate (310) is flush with the bottoms of the left and right clamping grooves (211).

6. The IXPE material strong elasticity and impact resistance testing device according to claim 5, characterized in that: The gear transmission assembly (50) includes a first rack (510), a second rack (520), a transmission gear (530) and a spring seat (540), wherein the transmission gear (530) is connected to the test seat (10), the bottom end of the first rack (510) is fixed vertically downward on the positioning plate (220), the top end of the first rack (510) is vertically upward and meshed with one side of the transmission gear (530), the second rack (520) is fixed on the bottom surface of the insertion rod (430), the inner end of the second rack (520) enters the socket (410) along with the insertion rod (430), the outer end of the second rack (520) is meshed with the top of the transmission gear (530), the inner end of the spring seat (540) is fixed on the feed pipe (40), and the outer end of the spring seat (540) is connected to the outer end of the insertion rod (430).

7. The IXPE material strong elasticity and impact resistance testing device according to claim 6, characterized in that: A vertical groove (440) is provided on the inner wall of the tube cavity of the feeding pipe (40), and a clamping portion (441) larger than the groove width is provided at the bottom of the vertical groove (440). An elastic baffle (442) is installed in the vertical groove (440), and a limiting portion (443) smaller than the width is provided at the bottom end of the elastic baffle (442). The limiting portion (443) extends downward and contacts the inner end of the insertion rod (430). Under the pushing action of the outer end of the spring seat (540), the inner end of the insertion rod (430) is pushed toward the axial direction of the feeding pipe (40), and the limiting portion (443) is pushed by the inner end of the insertion rod (430), so that the limiting portion (443) deflects toward the axis of the feeding pipe (40) with the clamping portion (441) as the deflection point, and the clamping portion (441) is close to the top end of the feeding pipe (40).

8. The IXPE material strong elasticity and impact resistance testing device according to claim 7, characterized in that: The test piece (420) is a solid sphere.

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