A compression detection device for a new material plastic product

Abstract

The application discloses a kind of new material plastic product compression detection device, it is related to new material detection technical field, including bottom plate, support and control panel, the bottom plate upper end face is fixed with support, the support right side is fixed with control panel, the bottom plate upper end face is fixed with positioning mechanism for the support positioning effect of plastic pipe fitting, adjusting mechanism is installed on the support.This new material plastic product compression detection device, through the linkage of pre-detection mechanism, before formal compression test, first inject gas into sealed pipe fitting and monitor air pressure change, can effectively identify the unqualified sample that there is micro crack, and terminate its subsequent detection, this mechanism avoids the test data distortion caused by inherent defect of sample from source, ensures that subsequent compression test result truly reflects material itself performance, while saving test time on invalid sample, greatly improve overall detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of new material testing technology, specifically to a compressive strength testing device for new material plastic products. Background Technology

[0002] New material plastic pipes, as an important engineering material, are widely used in various fields such as construction, municipal engineering, and agriculture due to their advantages such as corrosion resistance, light weight, and easy processing. Their compressive strength is a key mechanical performance indicator for measuring the quality of pipes and ensuring their safety and reliability during their service life. Therefore, high standards are required for the accuracy, safety, and efficiency of compressive strength testing devices.

[0003] Currently, conventional plastic pipe compression testing devices can typically only perform a single compression test to obtain the pipe's ultimate compressive strength and deformation. However, such devices have several significant drawbacks:

[0004] Microscopic cracks or inherent defects in the pipe itself cannot be identified before the compressive strength test. If a sample with cracks is used for testing, stress concentration will form at the crack, causing the pipe to fail prematurely. The measured data cannot truly reflect the compressive strength of the material itself, resulting in misjudgment and wasting testing resources.

[0005] During the test, the pipe may rupture due to pressure, causing debris to fly out and posing a safety hazard.

[0006] To ensure data accuracy, the pipe and pressure plate must be precisely aligned to avoid eccentric loading. However, existing devices lack a fast and accurate positioning and leveling mechanism. In addition, during the pressure test of sealed pipes, the air inside the pipe cavity is compressed, generating additional support force, which seriously interferes with the measurement of the true pressure strength. Existing devices lack an effective automated means to eliminate this interference. Summary of the Invention

[0007] The purpose of this invention is to provide a new compressive strength testing device for plastic products to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a pressure resistance testing device for new material plastic products, comprising a base plate, a support, and a control panel. The support is fixed to the upper surface of the base plate, and the control panel is fixed to the right side of the support. A positioning mechanism is fixed to the upper surface of the base plate for supporting and positioning the plastic pipe fittings. An adjustment mechanism is installed on the support.

[0009] The pre-inspection mechanism detects cracks in plastic pipe fittings by injecting gas into them before inspection. The pre-inspection mechanism is connected to the adjustment mechanism, and a pressure plate is provided below the pre-inspection mechanism.

[0010] The exhaust mechanism automatically vents air after the test is completed, preventing air pressure from affecting the accuracy of the test data. The exhaust mechanism is connected to the pre-testing mechanism.

[0011] Preferably, the base plate and the threaded rod are connected by a thread, and the threaded rod is fixedly connected to the support leg. Four support legs are provided. The height between the support leg and the base plate can be adjusted by the action of the threaded rod, thereby providing a basic guarantee for the installation and leveling of the base plate.

[0012] Preferably, the positioning mechanism includes a base fixed to the upper surface of the base plate, with a pressure sensor fixed at the center of the base and a sealing ring fixed to the outside of the pressure sensor. The sealing ring cooperates with the support plate to achieve a sealing effect. Several positioning rods are fixed at equal angles on the lower surface of the support plate, and the positioning rods are nested with the slots on the base to achieve a positioning effect. The support plate also has a slot, and the slot is nested with the plastic pipe. The sealing effect between the sealing ring and the support plate can prevent gas leakage. The pressure sensor can detect whether there are cracks on the surface of the plastic pipe. The nesting effect between the positioning rods and the slots on the base can realize the installation and positioning of the support plate. Combined with the nesting effect between the slot and the plastic pipe, the installation of the plastic pipe and the sealing of the lower surface can be realized, providing a basic guarantee for subsequent testing.

[0013] Preferably, the adjustment mechanism includes hydraulic rods symmetrically fixed in the bracket, with the output end of the hydraulic rods fixed to the slider, and the slider and the bracket being slidably connected. The slider is symmetrically fixed on the movable plate, and the hydraulic rods can drive the slider and the movable plate to move up and down, thereby providing a basic guarantee for the normal operation of the test. Combined with the sliding guide effect between the slider and the bracket, the stability of the movable plate movement can be guaranteed.

[0014] Preferably, the movable plate and the vertical rod are slidably connected, and a transparent cover is fixed to the lower end of the vertical rod. The inner diameter of the transparent cover is larger than the outer diameter of the support plate. A circular plate is fixed to the upper end of the vertical rod, and the circular plate contacts the upper surface of the movable plate to achieve positioning. Through the function of the transparent cover, a protective function can be achieved, thereby avoiding safety accidents caused by the plastic pipe bursting and flying debris during the testing process, and ensuring the safety of the testing.

[0015] Preferably, the pre-detection mechanism includes a mounting plate disposed below the movable plate, and a first spring is symmetrically fixed between the mounting plate and the movable plate. A piston is also symmetrically fixed on the mounting plate. The piston and the movable plate are slidably connected. A limit plate is fixed on the piston. The limit plate contacts the movable plate to achieve positioning. Through the elastic action of the first spring, a basic force can be provided for the automatic reset of the mounting plate. Combined with the contact limiting action between the limit plate and the movable plate, the movement distance of the piston can be limited to ensure the subsequent detection.

[0016] Preferably, the limiting plate and the sealing cylinder fixed on the upper surface of the movable plate are slidably connected, and the sealing cylinder is fixed with a one-way air inlet valve and a one-way air outlet valve. The one-way air outlet valve is connected to the air guide pipe, and the air guide pipe is slidably connected to the movable plate, the mounting plate, and the pressure plate. Through the action of the one-way air inlet valve and the one-way air outlet valve, the air in the sealing cylinder can be ensured to flow in one direction, thereby providing a basic guarantee for crack detection of plastic pipe fittings and ensuring the accuracy of subsequent test data.

[0017] Preferably, the central axis of the pressure plate coincides with the central axis of the support plate, and a pressure sensor is fixed between the pressure plate and the mounting plate. Furthermore, laser rangefinders are symmetrically nested on the lower side of the pressure plate. Through the action of the pressure sensor, the compressive strength data of the plastic pipe fitting can be monitored. In conjunction with the action of the laser rangefinder, the amount of shrinkage of the plastic pipe fitting can be monitored, so as to better judge the production quality of the plastic pipe fitting.

[0018] Preferably, the exhaust mechanism includes an exhaust pipe fixed on the pressure plate, and the exhaust pipe passes through the mounting plate. A sealing box is fixed on the exhaust pipe, and air outlets are symmetrically fixed on the upper surface of the sealing box. Through the above structure, a basic guarantee can be provided for the exhaust of air inside the plastic pipe, thereby avoiding the impact of internal air pressure on the accuracy of test data during subsequent testing.

[0019] Preferably, the sealed box is provided with a movable plate, and sealing plugs are symmetrically fixed on the upper surface of the movable plate. The sealing plugs cooperate with the air outlet to achieve a seal. At the same time, a sliding rod is vertically fixed on the movable plate. The sliding rod is slidably connected to the exhaust pipe, and a second spring is fixed between the sliding rod and the exhaust pipe. A contact sensor is fixed at the upper end of the sliding rod. The upper surface of the contact sensor is higher than the upper surface of the limiting plate. Through the above structure, the sealing of the air outlet can be released, ensuring the normal discharge of air inside the plastic pipe, thereby ensuring the normal operation of the test.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The new material plastic product compression testing device, through a linked pre-testing mechanism, injects gas into a sealed pipe and monitors the gas pressure change before the formal compression test. This can effectively identify unqualified samples with micro-cracks and terminate their subsequent testing. This mechanism avoids the distortion of test data caused by inherent defects in the sample from the source, ensures that the subsequent compression test results truly reflect the performance of the material itself, and saves testing time on invalid samples, greatly improving the overall testing efficiency.

[0022] 2. The pressure testing device for this new material plastic product, through the setting of a linked exhaust mechanism, automatically opens the exhaust channel after the pre-test is completed and before formal pressurization, so as to restore the air pressure inside and outside the pipe to balance. This design completely eliminates the false support force caused by the compression of air inside the pipe cavity, ensuring that the pressure test is carried out under conditions free from air pressure interference, thereby obtaining extremely accurate intrinsic compressive strength data of the material, significantly improving the scientificity and accuracy of the test;

[0023] 3. The pressure testing device for this new material plastic product ensures overall stability of the equipment through leveling feet; the replaceable tray and slot design adapts to different pipe diameters while achieving rapid and accurate center positioning, effectively preventing eccentric loading; and the transparent protective cover automatically falls before pressurization to completely cover the sample, effectively preventing debris from flying when the pipe breaks, providing crucial safety protection for operators. Attached Figure Description

[0024] Figure 1 This is a frontal three-dimensional structural diagram of the overall composition of the device of the present invention;

[0025] Figure 2 This is a bottom-view three-dimensional structural diagram of the base plate of the present invention;

[0026] Figure 3 This is a three-dimensional cross-sectional view of the positioning mechanism and the plastic pipe fitting of the present invention in a disassembled state.

[0027] Figure 4 This is a three-dimensional structural diagram of the bracket of the present invention, viewed from the front and in cross-section.

[0028] Figure 5 This is a three-dimensional structural diagram of the movable plate of the present invention viewed from below;

[0029] Figure 6 This is a cross-sectional three-dimensional structural diagram of the pre-detection mechanism of the present invention;

[0030] Figure 7 This is a frontal cross-sectional three-dimensional structural diagram of the pressure plate of the present invention;

[0031] Figure 8 For the present invention Figure 7A magnified schematic diagram of the structure at point A.

[0032] In the diagram: 1. Base plate; 101. Threaded rod; 102. Support leg; 2. Positioning mechanism; 201. Base; 202. Pressure sensor; 203. Sealing ring; 204. Support plate; 205. Positioning rod; 206. Slot; 3. Plastic fittings; 4. Bracket; 5. Control panel; 6. Adjustment mechanism; 601. Hydraulic rod; 602. Slider; 603. Movable plate; 604. Vertical rod; 605. Transparent cover; 606. Circular plate; 7. Pre-detection mechanism; 701. Safety device. Mounting plate; 702, First spring; 703, Piston; 704, Limiting plate; 705, Sealing cylinder; 706, One-way inlet valve; 707, One-way outlet valve; 708, Air guide pipe; 8, Pressure plate; 801, Pressure sensor; 802, Laser rangefinder; 9, Exhaust mechanism; 901, Exhaust pipe; 902, Sealing box; 903, Air outlet; 904, Moving plate; 905, Sealing plug; 906, Slide rod; 907, Second spring; 908, Contact sensor. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-8 This invention provides a technical solution: a pressure resistance testing device for new material plastic products, comprising a base plate 1, a support 4, and a control panel 5. The support 4 is fixed to the upper surface of the base plate 1, and the control panel 5 is fixed to the right side of the support 4. A positioning mechanism 2 is fixed to the upper surface of the base plate 1 for supporting and positioning plastic pipe fittings 3. An adjustment mechanism 6 is installed on the support 4.

[0035] The pre-inspection mechanism 7 detects cracks on the plastic pipe 3 by injecting gas into it before inspection. The pre-inspection mechanism 7 is connected to the adjustment mechanism 6, and a pressure plate 8 is provided below the pre-inspection mechanism 7.

[0036] The exhaust mechanism 9 automatically exhausts air after the test is completed, so as to avoid the air pressure affecting the accuracy of the test data. The exhaust mechanism 9 is connected to the pre-testing mechanism 7.

[0037] The base plate 1 and the threaded rod 101 are connected by threads, and the threaded rod 101 and the support leg 102 are fixedly connected, and four support legs 102 are provided; the positioning mechanism 2 includes a base 201 fixed on the upper end face of the base plate 1, and a pressure sensor 202 is fixed at the center of the base 201, and a sealing ring 203 is fixed on the outside of the pressure sensor 202. At the same time, the sealing ring 203 cooperates with the support plate 204 to achieve a sealing effect. Several positioning rods 205 are fixed at equal angles on the lower end face of the support plate 204, and the positioning rods 205 are nested with the slots on the base 201 to achieve a positioning effect. The support plate 204 is also provided with a slot 206, and the slot 206 is nested with the plastic tube 3.

[0038] When using the compression testing device for plastic products made of this new material, such as Figures 1-8 As shown, the entire device is first placed on the ground. The distance between the support leg 102 and the base plate 1 can be adjusted via the threaded connection between the threaded rod 101 and the base plate 1, thus achieving leveling of the base plate 1 and ensuring its horizontal installation. Next, a support plate 204 with corresponding sized slots 206 is selected and installed according to the diameter and thickness of the plastic pipe fitting 3. During installation, the support plate 204 is positioned by nesting it with the positioning rod 205 into the slot on the base 201. Then, pressing is applied to align the lower end face of the support plate 204 with the base. When the tray 204 is in contact with the sealing ring 203, the central opening on the tray 204 is nested to achieve a seal, preventing gas leakage and thus completing the installation of the tray 204. After the tray 204 is installed, the plastic pipe 3 is installed and fixed by nesting it with the corresponding slot 206. At this time, the lower end face of the plastic pipe 3 contacts the tray 204 to achieve a seal, and the central axis of the plastic pipe 3 coincides with the central axis of the pressure plate 8, avoiding eccentric loading during the subsequent pressure test of the plastic pipe 3 and ensuring the accuracy of the test data.

[0039] The adjustment mechanism 6 includes hydraulic rods 601 that are symmetrically fixed in the bracket 4, and the output end of the hydraulic rods 601 is fixed to the slider 602. The slider 602 is slidably connected to the bracket 4. The slider 602 is symmetrically fixed on the movable plate 603. The movable plate 603 is slidably connected to the vertical rod 604. A transparent cover 605 is fixed to the lower end of the vertical rod 604. The inner diameter of the transparent cover 605 is larger than the outer diameter of the support plate 204. A circular plate 606 is fixed to the upper end of the vertical rod 604. The circular plate 606 contacts the upper surface of the movable plate 603 to achieve positioning.

[0040] After the plastic pipe fitting 3 is installed, as follows: Figures 1-8As shown, at this time, the hydraulic rod 601 extends, thereby driving the slider 602, movable plate 603, transparent cover 605, pre-inspection mechanism 7 and pressure plate 8 to move down. When the transparent cover 605 moves down to contact the base plate 1, the pressure plate 8 does not contact the upper end face of the plastic pipe 3. At this time, the transparent cover 605 covers the upper end face of the plastic pipe 3 inside, avoiding the plastic pipe 3 from bursting and causing debris to fly and causing safety accidents during the subsequent pressure test, thus ensuring the safety of the inspection. At this time, the hydraulic rod 601 continues to extend, causing the slider 602, movable plate 603, pre-inspection mechanism 7 and pressure plate 8 to continue to move down. At this time, the movable plate 603 moves downward relative to the vertical rod 604. When the pressure plate 8 contacts the upper end face of the plastic pipe 3, the upper end face of the plastic pipe 3 can be sealed by the pressure plate 8, so that the pressure plate 8, the plastic pipe 3 and the support plate 204 form a sealed space.

[0041] After the pressure plate 8 contacts and seals with the upper end face of the plastic pipe 3, the hydraulic rod 601 continues to extend, causing the slider 602, the movable plate 603, and the pre-detection mechanism 7 to continue to move downward. At this time, since the position of the pressure plate 8 is limited, and with the elastic action of the first spring 702, the mounting plate 701 and the movable plate 603 are flexibly connected. When the slider 602 and the movable plate 603 continue to move downward, the movable plate 603 moves downward relative to the mounting plate 701, and the first spring 702 is compressed. At this time, the pressure generated by the pressure plate 8 on the plastic pipe 3 comes mainly from the elastic force of the first spring 702. The pressure is small and much smaller than the yield strength of the plastic pipe 3. That is, when the first spring 702 is compressed, the plastic pipe 3 remains in a normal state. At this time, the distance L1 between the pressure plate 8 and the support plate 204 can be detected by the laser rangefinder 802.

[0042] The pre-detection mechanism 7 includes a mounting plate 701 disposed below the movable plate 603, and first springs 702 are symmetrically fixed between the mounting plate 701 and the movable plate 603. Pistons 703 are also symmetrically fixed on the mounting plate 701. The pistons 703 and the movable plate 603 are slidably connected. A limit plate 704 is fixed on the piston 703. The limit plate 704 contacts the movable plate 603 to achieve positioning. The limit plate 704 is slidably connected to the sealing cylinder 705 fixed on the upper end face of the movable plate 603. A one-way air inlet valve 706 and a one-way air outlet valve 707 are fixed on the sealing cylinder 705. The one-way air outlet valve 707 is connected to the air guide pipe 708. The air guide pipe 708 is slidably connected to the movable plate 603, the mounting plate 701 and the pressure plate 8.

[0043] When the movable plate 603 moves downward relative to the mounting plate 701, the piston 703 slides upward relative to the sealing cylinder 705. This allows air inside the sealing cylinder 705 to enter the sealed space formed by the pressure plate 8, plastic pipe 3, and support plate 204 through the one-way air outlet valve 707 and the air guide pipe 708. This increases the air pressure inside the sealed space. In conjunction with the air pressure sensor 202, the air pressure inside the sealed space can be monitored. If the air pressure inside the sealed space gradually increases, it indicates that the plastic pipe 3 sample is qualified and has no micro-cracks on the surface, and can be further tested. If the air pressure inside the sealed space remains unchanged or decreases after increasing for a period of time, it indicates that there are micro-cracks on the surface of the plastic pipe 3, and it is an unqualified sample. This enables automatic screening of the plastic pipe 3 sample, avoiding the occurrence of large stress at the cracks during subsequent pressure testing, which would affect the accuracy of the pressure test data of the plastic pipe 3. This also avoids invalid testing and effectively improves testing efficiency.

[0044] The central axis of the pressure plate 8 coincides with the central axis of the support plate 204, and a pressure sensor 801 is fixed between the pressure plate 8 and the mounting plate 701. A laser rangefinder 802 is symmetrically nested on the lower side of the pressure plate 8. The exhaust mechanism 9 includes an exhaust pipe 901 fixed to the pressure plate 8, which penetrates the mounting plate 701. A sealing box 902 is fixed to the exhaust pipe 901, and air outlets 903 are symmetrically fixed on the upper surface of the sealing box 902. A movable [unclear - possibly a device or mechanism] is provided inside the sealing box 902. A movable plate 904 is provided, and sealing plugs 905 are symmetrically fixed on the upper surface of the movable plate 904. The sealing plugs 905 cooperate with the air outlet 903 to achieve a seal. At the same time, a sliding rod 906 is vertically fixed on the movable plate 904. The sliding rod 906 is slidably connected to the exhaust pipe 901. A second spring 907 is fixed between the sliding rod 906 and the exhaust pipe 901. At the same time, a contact sensor 908 is fixed on the upper end of the sliding rod 906. The upper surface of the contact sensor 908 is higher than the upper surface of the limiting plate 704.

[0045] When the movable plate 603 moves downward relative to the mounting plate 701 to perform pre-inspection of the plastic pipe fitting 3, the pre-inspection operation of the plastic pipe fitting 3 is completed when the movable plate 603 contacts the contact sensor 908. When the plastic pipe fitting 3 is qualified and continues to be inspected, the hydraulic rod 601 continues to extend, driving the movable plate 603 to move downward, so that the movable plate 603 exerts pressure on the contact sensor 908. At this time, the slide rod 906 is forced to move downward relative to the exhaust pipe 901, thereby driving the movable plate 904 and the sealing plug 905 to move downward. When the sealing plug 905 separates from the air outlet 903, the sealing effect on the air outlet 903 is released, thereby releasing the sealing effect of the sealed space composed of the pressure plate 8, the plastic pipe fitting 3 and the support plate 204. At this time, the gas inside the plastic pipe fitting 3 is discharged through the exhaust pipe 901 and the air outlet 903, realizing the sealing. The pressure relief within the space ensures that the internal and external air pressure of the plastic pipe fitting 3 returns to equilibrium. As the movable plate 603 continues to move downward, when the movable plate 603 contacts the limiting plate 704, the flexible connection between the movable plate 603 and the mounting plate 701 becomes a rigid connection. Through the continued extension of the hydraulic rod 601, the pressure plate 8 exerts pressure on the plastic pipe fitting 3, and the pressure continues to increase, thereby realizing the pressure resistance test of the plastic pipe fitting 3. With the help of the pressure sensor 801, the pressure magnitude can be detected, thereby determining the pressure resistance of the plastic pipe fitting 3. After the test is completed, the distance L2 between the pressure plate 8 and the support plate 204 can be detected by the laser rangefinder 802. The collapse variable generated by the plastic pipe fitting 3 during the pressure resistance test can be calculated by L1-L2, thereby better judging whether the plastic pipe fitting 3 meets the production standards.

[0046] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A pressure testing device for a new type of plastic product, comprising a base plate (1), a bracket (4), and a control panel (5), wherein the bracket (4) is fixed to the upper surface of the base plate (1), and the control panel (5) is fixed to the right side of the bracket (4), characterized in that: The upper end face of the base plate (1) is fixed with a positioning mechanism (2) for supporting and positioning the plastic pipe fitting (3), and an adjustment mechanism (6) is installed on the bracket (4). The pre-inspection mechanism (7) detects cracks in the plastic pipe fitting (3) by injecting gas into it before inspection. The pre-inspection mechanism (7) is connected to the adjustment mechanism (6). A pressure plate (8) is provided below the pre-inspection mechanism (7). The pre-inspection mechanism (7) includes a mounting plate (701) located below the movable plate (603) of the adjustment mechanism (6). A first spring (702) is symmetrically fixed between the mounting plate (701) and the movable plate (603). A piston (703) is also symmetrically fixed on the mounting plate (701). The piston (703) and the first spring (702) are symmetrically fixed between the mounting plate (701) and the movable plate (603). The movable plates (603) are slidably connected, and a limit plate (704) is fixed on the piston (703). The limit plate (704) contacts the movable plate (603) to achieve positioning. The limit plate (704) is slidably connected to the sealing cylinder (705) fixed on the upper end face of the movable plate (603). A one-way air inlet valve (706) and a one-way air outlet valve (707) are fixed on the sealing cylinder (705). The one-way air outlet valve (707) is connected to the air guide pipe (708). The air guide pipe (708) is slidably connected to the movable plate (603), the mounting plate (701), and the pressure plate (8). The exhaust mechanism (9) automatically exhausts air after the test is completed, so as to avoid the air pressure affecting the accuracy of the test data. The exhaust mechanism (9) is connected to the pre-testing mechanism (7).

2. The compressive strength testing device for a new type of plastic product according to claim 1, characterized in that: The base plate (1) is threadedly connected to the threaded rod (101), and the threaded rod (101) is fixedly connected to the support leg (102), and there are four support legs (102).

3. The compressive strength testing device for a new type of plastic product according to claim 1, characterized in that: The positioning mechanism (2) includes a base (201) fixed on the upper surface of the base plate (1), and a pressure sensor (202) is fixed at the center of the base (201). A sealing ring (203) is fixed on the outside of the pressure sensor (202). The sealing ring (203) cooperates with the support plate (204) to achieve a sealing effect. Several positioning rods (205) are fixed at equal angles on the lower surface of the support plate (204). The positioning rods (205) are nested with the slots on the base (201) to achieve a positioning effect. The support plate (204) is also provided with a slot (206). The slot (206) is nested with the plastic pipe (3).

4. The compressive strength testing device for a new type of plastic product according to claim 3, characterized in that: The adjustment mechanism (6) includes hydraulic rods (601) that are symmetrically fixed in the bracket (4), and the output end of the hydraulic rods (601) is fixed to the slider (602). The slider (602) is slidably connected to the bracket (4), and the slider (602) is symmetrically fixed on the movable plate (603).

5. The compressive strength testing device for a new type of plastic product according to claim 4, characterized in that: The movable plate (603) and the vertical rod (604) are slidably connected, and a transparent cover (605) is fixed at the lower end of the vertical rod (604). The inner diameter of the transparent cover (605) is larger than the outer diameter of the support plate (204). A circular plate (606) is fixed at the upper end of the vertical rod (604), and the circular plate (606) contacts the upper surface of the movable plate (603) to achieve positioning.

6. The compressive strength testing device for a new type of plastic product according to claim 1, characterized in that: The central axis of the pressure plate (8) coincides with the central axis of the support plate (204), and a pressure sensor (801) is fixed between the pressure plate (8) and the mounting plate (701). A laser rangefinder (802) is symmetrically nested on the lower side of the pressure plate (8).

7. The compressive strength testing device for a new type of plastic product according to claim 6, characterized in that: The exhaust mechanism (9) includes an exhaust pipe (901) fixed on the pressure plate (8), and the exhaust pipe (901) passes through the mounting plate (701). A sealing box (902) is fixed on the exhaust pipe (901), and an air outlet (903) is symmetrically fixed on the upper surface of the sealing box (902).

8. The compressive strength testing device for a new type of plastic product according to claim 7, characterized in that: The sealing box (902) is provided with a movable plate (904), and sealing plugs (905) are symmetrically fixed on the upper surface of the movable plate (904). The sealing plugs (905) cooperate with the air outlet (903) to achieve sealing. At the same time, a sliding rod (906) is vertically fixed on the movable plate (904). The sliding rod (906) is slidably connected to the exhaust pipe (901). A second spring (907) is fixed between the sliding rod (906) and the exhaust pipe (901). At the same time, a contact sensor (908) is fixed at the upper end of the sliding rod (906). The upper surface of the contact sensor (908) is higher than the upper surface of the limiting plate (704).

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