Touch screen compression resistance detection equipment and method

Abstract

The invention relates to the technical field of touch screen detection, and discloses touch screen compression resistance detection equipment and method.The touch screen compression resistance detection equipment comprises a machine body and a U-shaped supporting frame installed on the machine body, an electric cylinder is installed at the top of the supporting frame, an installation frame is installed at the movable end of the electric cylinder, and a pressure plate is installed at the bottom end of the installation frame; and a sensor for detecting the pressure condition of the pressure plate is arranged on the mounting frame. Through the design of the multi-point plane supporting table and the single-point supporting piece, full-screen compression resistance detection can be carried out, detection can be carried out on a specific single point of the touch screen, diversified detection requirements are met, the compression resistance of the touch screen is comprehensively and accurately evaluated, and compared with a traditional detection mode, the detection efficiency and accuracy are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screen detection, and specifically provides a touch screen compressive strength detection device and method. Background Art

[0002] As a key component for realizing human-computer interaction in modern intelligent devices, touch screens are widely used in various electronic products such as smart phones, tablet computers, and in-vehicle central control systems. With the continuous improvement of users' requirements for the touch screen usage experience and the increasing challenges faced by touch screens in complex usage scenarios, their quality and reliability have become increasingly important, and the compressive strength performance is one of the key indicators for measuring the quality of touch screens.

[0003] In traditional touch screen compressive strength detection, relatively simple detection methods are mostly adopted. For example, some enterprises use detection devices with a fixed planar support combined with a single pressure block. Such devices can only perform a rough overall pressure test on the touch screen, and cannot accurately detect different areas of the touch screen, making it difficult to discover defects in the local compressive strength performance of the touch screen. In addition, some detection devices have insufficient accuracy in pressure control, and the applied pressure is unstable, resulting in large deviations in the detection results and being unable to accurately evaluate the true compressive strength ability of the touch screen. At the same time, traditional detection devices often lack the function of real-time collection and analysis of pressure data during the detection process, making it difficult to form a comprehensive and scientific detection report, which is not conducive to the improvement and optimization of product quality.

[0004] With the continuous development of touch screen technology, the structures and materials of new touch screens are becoming increasingly complex, posing higher requirements for detection devices. The emergence of new products such as flexible touch screens and large-size touch screens requires detection devices to be able to adapt to the characteristics of different types of touch screens and achieve more accurate and flexible detection. Therefore, it has become an urgent need to develop a touch screen compressive strength detection device that can achieve precise full-screen and single-point compressive strength detection, precise pressure control, and comprehensive data collection and analysis to meet the needs of industry development and improve the quality of touch screen products. Summary of the Invention

[0005] Aiming at the above deficiencies existing in the prior art, the present invention provides a touch screen compressive strength detection device and method, which perform detection on specific single points and the full screen of the touch screen, meet diverse detection requirements, and comprehensively and accurately evaluate the compressive strength performance of the touch screen.

[0006] The present invention provides the following technical solution: A touch screen compressive strength detection device includes a machine body and a U-shaped support frame installed on the machine body. An electric cylinder is installed at the top of the support frame. The moving end of the electric cylinder is installed with a mounting frame, and a pressure plate is installed at the bottom end of the mounting frame. A sensor for detecting the pressure condition of the pressure plate is provided on the mounting frame.

[0007] The top of the body is inlaid with a multi-point planar support platform located below the pressure plate, and the touch screen is subjected to full-screen and single-point compressive detection through the multi-point planar support platform. The front end of the body is inlaid with a display screen, and device data is displayed through the display screen;

[0008] The multi-point planar support platform includes a rectangular platform and a number of groups of grooves arranged in a rectangular array on the rectangular platform. A single-point support member is provided inside the groove. The single-point support member includes a rectangular planar block at the top, an anti-loosening column at the bottom of the rectangular planar block, and a gasket pressure sensor in the shape of a circular ring is installed at the bottom of the anti-loosening column. An adjusting member is installed at the bottom end of the gasket pressure sensor;

[0009] The anti-loosening column and the adjusting member are respectively adjusted by two groups of pressure regulators. The pressure of the adjusting member is adjusted by one group of pressure regulators to lift the rectangular planar block by the adjusting member for single-point extrusion detection of the touch screen;

[0010] The pressure of the anti-loosening column is adjusted by the other group of pressure regulators to expand the anti-loosening column and make it contact with the inner wall of the groove to stably support the single-point support member.

[0011] Preferably, the anti-loosening column and the adjusting member in each single-point support member are respectively communicated with two groups of pressure regulators through pipelines, and the two groups of pressure regulators corresponding to each single-point support member are respectively installed at both ends of the body and arranged according to the sorting method of the single-point support members.

[0012] Preferably, the groove includes a rectangular groove at the top, a large circular groove in the middle, and a small circular groove at the bottom. The rectangular planar block is located in the rectangular groove, and the rectangular planar block is flush with the top of the rectangular platform. The anti-loosening column and the gasket pressure sensor are located in the large circular groove. After the anti-loosening column expands, it fits the large circular groove to stabilize the rectangular planar block. The adjusting member is located in the small circular groove, and the adjusting member is installed in the small circular groove through a bolt. And holes for pipelines and circuits to be led out are provided at the bottom of the groove.

[0013] Preferably, the rectangular planar block includes a metal block and a diversion channel that circulates inside the metal block. Heat-conducting oil is provided in the diversion channel of the metal block. The metal block generates heat during the extrusion process, resulting in local thermal expansion. After the heat-conducting oil is locally heated, it will automatically flow, making the metal block uniformly heated and avoiding local expansion of the metal block from blocking the groove.

[0014] Preferably, the anti-loosening column includes a cylinder and an annular groove formed on the side surface of the cylinder. A flexible metal ring is installed on the side surface of the cylinder and located on the annular groove. The annular groove is closed by the flexible metal ring to form a cavity. A column tube is installed at the bottom end of the cylinder, and a flow channel communicating the column tube and the annular groove is provided inside the cylinder. The column tube is communicated with a pressure regulator through a pipeline. Oil liquid is introduced into the annular groove through the pressure regulator to change the pressure inside the flexible metal ring, so that the flexible metal ring expands outwards and is firmly fixed in the groove body.

[0015] Preferably, the adjusting member includes an annular groove with a C-shaped cross-section. An annular platform is provided inside the annular groove. An annular piston is installed at the bottom end of the annular platform. Both the inner and outer sides of the annular platform at the top of the annular piston are connected to the inner wall of the annular groove through a sealing structure. The column tube passes through the annular groove and the annular platform. A conduit is installed at the bottom end of the annular groove. The conduit is communicated with a pressure regulator through a pipeline. Oil liquid is introduced into the annular groove through the pressure regulator to change the pressure inside the annular groove, so that the oil liquid jacks up the annular piston to move, and pushes the anti-loosening column and the rectangular plane block thereon to move, thereby adjusting the pressure of the single-point support member on the touch screen.

[0016] Preferably, the pressure regulator includes a pressure tube and a sealing end plate installed at the front end of the pressure tube. A rotatable sealing column is provided at the center of the sealing end plate. A knob is installed at the front end of the sealing column. A threaded column is installed at the rear end of the sealing column. A special-shaped guide column is threadedly connected to the threaded column. A slidable annular bracket is provided on the special-shaped guide column, and the annular bracket is installed on the inner wall of the pressure tube. A circular piston is installed at the end of the special-shaped guide column. By adjusting the position of the circular piston, the oil liquid is discharged to adjust the pressure of the anti-loosening column and the adjusting member.

[0017] A method for detecting the compressive resistance of a touch screen is specifically operated as follows:

[0018] S1. First, the electric cylinder pushes the pressure plate downward to contact the multi-point plane support table. Check the pressure of each single-point support member in contact with the pressure plate. After adjusting the pressure through the adjusting member, make the pressure of each single-point support member the same. Lock the single-point support member through the anti-loosening column. Finally, the electric cylinder drives the pressure plate to return to its original position;

[0019] S2. When performing a full-screen compressive resistance test on the touch screen, place the touch screen on the multi-point plane support table. Push the pressure plate downward through the electric cylinder to make the pressure plate contact the touch screen, and check the pressure of the pressure plate to detect the full-screen compressive resistance ability of the touch screen;

[0020] S3. When performing single-point compression detection on the touch screen, place the touch screen on the multi-point planar support platform. Push the pressure plate downward through the electric cylinder to make the pressure plate contact the touch screen. After reaching the set pressure value, the electric cylinder stops. According to the position to be detected, drive the single-point support member at that position. First, cancel the locking of the single-point support member at that position by the anti-loosening column, and the adjusting member jacks up to make the single-point support member move upward, and perform compression detection on a certain part of the touch screen from the bottom of the touch screen to detect the compression resistance performance of the touch screen at that place.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The design of the multi-point planar support platform and the single-point support member can not only perform full-screen compression detection but also detect specific single points of the touch screen. The detection mode can be switched freely between the two to meet diverse detection requirements, comprehensively and accurately evaluate the compression resistance performance of the touch screen, and greatly improve the detection efficiency and accuracy compared with the traditional detection method.

[0023] (2) Through the linkage of the multi-point planar support platform and the hydraulic pressure system, the pressure adjustment of the single-point support member is realized, so that each point of the touch screen is evenly stressed during detection, ensuring that the pressure value in the full-screen and single-point detections accurately matches the preset requirements. During the pre-adjustment stage, the pressure data of each support point is displayed in real time, supporting the operator to adjust immediately, eliminating the problem of uneven multi-point pressure, and improving the detection consistency and repeatability.

[0024] (3) Through the uniform pressure application of the multi-point planar support platform, the real use scenario is simulated to evaluate the overall structural strength of the touch screen. The upward movement and pressure application of the single-point support member are independently controlled to simulate local high stress, such as button pressing and corner impact, to adapt to diverse quality test standards. At the same time, during the upward movement and pressure application process of a single single-point support member, the remaining single-point support members are pressed against the touch screen to prevent its displacement during single-point detection.

[0025] (4) The rectangular planar block and the anti-loosening column in the single-point support member can prevent displacement caused by vibration or pressure fluctuation during detection and faults caused by temperature generated by extrusion. Brief Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the multi-point planar support platform of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the single-point support member of the present invention;

[0029] Figure 4 It is for the present invention Figure 3 Schematic diagram of the split structure;

[0030] Figure 5Schematic diagram of the rectangular plane block structure of the present invention;

[0031] Figure 6 Schematic diagram of the anti-loosening column structure of the present invention;

[0032] Figure 7 Schematic diagram of the adjusting member structure of the present invention;

[0033] Figure 8 Schematic diagram of the pressure regulator structure of the present invention;

[0034] Figure 9 Schematic diagram of the groove body structure of the present invention.

[0035] In the figure: 1, the body; 2, the support frame; 3, the electric cylinder; 4, the mounting frame; 5, the pressure plate; 6, the multi-point plane support platform; 7, the groove body; 8, the single-point support member; 9, the rectangular platform; 81, the rectangular plane block; 82, the anti-loosening column; 83, the gasket pressure sensor; 84, the adjusting member; 85, the pressure regulator; 71, the rectangular groove; 72, the large circular groove; 73, the small circular groove; 811, the metal block; 812, the diversion channel; 821, the cylinder; 822, the annular groove; 823, the flexible metal ring; 824, the column tube; 825, the flow channel; 841, the annular groove; 842, the annular platform; 843, the annular piston; 844, the conduit; 851, the pressure tube; 852, the sealing end plate; 853, the sealing column; 854, the knob; 855, the threaded column; 856, the special-shaped guide column; 857, the annular bracket; 858, the circular piston. Detailed implementation manners

[0036] In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. To keep the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and known components are omitted to avoid unnecessarily obscuring the concepts of the present invention.

[0037] Please refer to Figure 1 , place the body 1 stably on the working site to ensure that its bottom is in full contact with the ground, use a level to calibrate the levelness of the body 1, and ensure the overall stability of the equipment. Install the U-shaped support frame 2 on the top of the body 1, and firmly connect the support frame 2 to the body 1 through bolts. During the installation process, strict measurement and positioning are required to ensure that the support frame 2 is perpendicular to the body 1, providing an accurate reference for the installation of subsequent components.

[0038] Install the electric cylinder 3 on the top of the support frame 2, ensuring that the installation position of the electric cylinder 3 is accurate so that its moving end can move vertically up and down. Fix the mounting bracket 4 to the moving end of the electric cylinder 3, and ensure that the mounting bracket 4 is tightly connected to the moving end of the electric cylinder 3 without looseness during installation. Install the pressure plate 5 at the bottom end of the mounting bracket 4, and at the same time install a sensor for detecting the pressure of the pressure plate 5 at a suitable position on the mounting bracket 4. A display screen is inlaid at the front end of the machine body 1 for displaying various data during the equipment detection process. The installation of the sensor needs to follow the operation manual to ensure that it can accurately collect pressure data and is correctly connected to the data transmission system of the equipment.

[0039] Refer to Figure 2 , the multi-point planar support table 6 includes a rectangular table 9, and a number of groups of grooves 7 are arranged in a rectangular array on the rectangular table 9. A single-point support member 8 is provided inside each groove 7, and the specific structure is as follows:

[0040] Refer to Figure 3 and Figure 4 , the single-point support member 8 is composed of a rectangular planar block 81 at the top, an anti-loosening column 82 at the bottom, a gasket pressure sensor 83 at the bottom of the anti-loosening column 82, and an adjusting member 84 at the bottom end of the gasket pressure sensor 83. Among them, the rectangular planar block 81 is used to contact the touch screen and bear the pressure; the gasket pressure sensor 83 can detect the magnitude of the pressure received in real time; the anti-loosening column 82 and the adjusting member 84 are respectively controlled and adjusted by two groups of pressure regulators 85.

[0041] Refer to Figure 9 , the groove 7 includes a rectangular groove 71 at the top, a large circular groove 72 in the middle, and a small circular groove 73 at the bottom. The rectangular planar block 81 is installed in the rectangular groove 71 and is flush with the top of the rectangular table 9 to ensure the flatness when the touch screen is placed; the anti-loosening column 82 and the gasket pressure sensor 83 are located in the large circular groove 72. When the anti-loosening column 82 expands, it can fit the inner wall of the large circular groove 72 to achieve stable locking of the single-point support member 8 and prevent the single-point support member 8 from shaking due to excessive force during the compression experiment; the adjusting member 84 is installed in the small circular groove 73 and is fixed to the small circular groove 73 by bolts. At the same time, there are holes at the bottom of the groove 7 for the export of pipelines and lines to connect components such as the pressure regulator 85.

[0042] Refer to Figure 5, the rectangular planar block 81 is composed of a metal block 811 and a circulating diversion channel 812 opened in the metal block 811, and the diversion channel 812 is filled with heat-conducting oil. During the extrusion process, the heat generated by the metal block 811 will cause local expansion, and the heat-conducting oil will flow automatically after being heated, which can make the metal block 811 heat evenly, avoid blocking the groove body 7 due to excessive local expansion, and avoid the influence on the micro-displacement of the metal block 811 in the rectangular groove 71. During the single-point compressive strength detection process, the metal block 811 needs to move upward slightly at a short distance. If the metal block 811 expands locally due to excessive heat and fits tightly with the rectangular groove 71, it will affect the movement of the metal block 811. Therefore, through the heat-conducting oil in the diversion channel 812, the metal block 811 is heated evenly to avoid local heat expansion of the metal block 811. And the gap between the rectangular planar block 81 and the rectangular groove 71 is less than 0.2 mm, and the gap cannot be too large.

[0043] Refer to Figure 6 , the anti-loosening column 82 includes a cylinder 821, with an annular groove 822 provided on the side surface of the cylinder 821, and a flexible metal ring 823 installed on the side surface in the annular groove 822. The annular groove 822 is closed by the flexible metal ring 823 to form a cavity. A column tube 824 is installed at the bottom end of the cylinder 821, and a flow channel 825 connecting the column tube 824 and the annular groove 822 is provided inside. The column tube 824 is connected to the pressure regulator 85 through a pipeline. When the pressure regulator 85 introduces oil into the annular groove 822, the pressure inside the flexible metal ring 823 can be changed, causing it to expand outward and firmly fix in the large circular groove 72, realizing the stable locking of the single-point support member 8. At the same time, the locking of the single-point support member 8 can also be cancelled through the pressure regulator 85.

[0044] Refer to Figure 7 , the adjusting member 84 includes an annular groove 841 with a C-shaped cross-section. An annular platform 842 is provided inside the annular groove 841, and an annular piston 843 is installed at the bottom end of the annular platform 842. Both the inner and outer sides of the annular platform 842 at the top of the annular piston 843 are connected to the inner wall of the annular groove 841 through a sealing structure, and the column tube 824 passes through the annular groove 841 and the annular platform 842. A conduit 844 is installed at the bottom end of the annular groove 841, and the conduit 844 is connected to the pressure regulator 85 through a pipeline. When the pressure regulator 85 introduces oil into the annular groove 841, the pressure inside the annular groove 841 can be changed, causing the oil to lift the annular piston 843 to move, thereby pushing the anti-loosening column 82 and the rectangular planar block 81 thereon to move, realizing the adjustment of the pressure of the single-point support member 8 on the touch screen.

[0045] The inner detection point of the gasket pressure sensor 83 is installed at the bottom of the cylinder 821 through a bolt. The fixed end on the outer side of the gasket pressure sensor 83 is installed on the annular platform 842. The column tube 824 passes through the inner side of the gasket pressure sensor 83 and is led out through the adjusting part 84 from the hole at the bottom of the groove body 7. The gasket pressure sensor 83 is also led out through a circuit, so as to facilitate the installation of the single-point support member 8.

[0046] Refer to Figure 8 , the pressure regulator 85 includes a pressure pipe 851 and a sealing end plate 852 installed at the front end of the pressure pipe 851. A rotatable sealing column 853 is provided at the center of the sealing end plate 852. A knob 854 is installed at the front end of the sealing column 853, and a threaded column 855 is installed at the rear end. An irregular guide column 856 is threadedly connected to the threaded column 855. A slidable annular bracket 857 is provided on the irregular guide column 856. The annular bracket 857 is installed on the inner wall of the pressure pipe 851. A circular piston 858 is installed at the end of the irregular guide column 856. By rotating the knob 854, the sealing column 853 and the threaded column 855 are driven to rotate, so as to move the irregular guide column 856, adjust the position of the circular piston 858, control the oil discharge, and realize the pressure adjustment of the anti-loosening column 82 and the adjusting part 84.

[0047] The anti-loosening column 82 and the adjusting part 84 in each single-point support member 8 are respectively communicated with two groups of pressure regulators 85 through pipelines. The two groups of pressure regulators 85 corresponding to each single-point support member 8 are respectively installed at both ends of the machine body 1 and are arranged according to the sorting method of the single-point support member 8, which is convenient for centralized control and management.

[0048] By setting a driving device to connect to the knob 854 on each pressure regulator 85 and using the driving device to adjust the pressure regulator 85 at the corresponding position, manual operation can be avoided.

[0049] I. Equipment pre-adjustment

[0050] Start the equipment. The electric cylinder 3 pushes the pressure plate 5 to slowly move down until it contacts the multi-point plane support platform 6. At this time, the equipment collects the pressure data received by each single-point support member 8 in real time and displays it on the display screen. The operator observes the pressure conditions of each single-point support member 8. If there is a situation of inconsistent pressure, the pressure is adjusted by adjusting the adjusting part 84 and the pressure regulator 85 of the corresponding single-point support member 8 until the pressure of each single-point support member is the same. After the pressure adjustment is completed, the anti-loosening column 82 is pressurized again through the pressure regulator 85 to make it expand and fit tightly with the inner wall of the groove body 7 to lock the single-point support member 8. After confirming that the pressure of all single-point support members 8 is stable and the support is firm, the electric cylinder 3 drives the pressure plate 5 to return to its original position to complete the equipment pre-adjustment.

[0051] II. Touch screen full-screen compressive strength detection

[0052] Place the touch screen to be detected steadily on the multi-point planar support platform 6, ensuring that the touch screen completely covers the surface of the multi-point planar support platform 6 and is accurately positioned. Start the electric cylinder 3 and control it to push the pressure plate 5 downward at a set speed, so that the pressure plate 5 is in uniform contact with the surface of the touch screen. During the downward pressing process of the pressure plate 5, the sensor on the mounting bracket 4 collects pressure data in real time and transmits it to the device control system, and the display screen synchronously displays the pressure change situation. Continuously increase the pressure until the preset detection pressure value is reached or the touch screen is damaged, and record the pressure data at this time to evaluate the full-screen pressure resistance of the touch screen. After the detection is completed, the electric cylinder 3 drives the pressure plate 5 to move upward and reset, and take out the detected touch screen.

[0053] III. Single-point pressure resistance detection of the touch screen

[0054] Place another touch screen to be detected on the multi-point planar support platform 6, and also ensure its accurate position. Start the electric cylinder 3, push the pressure plate 5 downward to contact the touch screen, and gradually increase the pressure according to the preset program. When the set pressure value is reached, the electric cylinder 3 stops. According to the pre-determined detection position, operate the device control system to drive the single-point support member 8 corresponding to this position. First, release the pressure in the anti-loosening column 82 through the pressure regulator 85 to cancel the locking of the single-point support member 8; then, introduce hydraulic oil into the annular groove 841 of the adjusting member 84 to lift the adjusting member 84, drive the rectangular planar block 81 to move upward, and apply pressure to the specified position from the bottom of the touch screen to detect the pressure resistance performance of the touch screen at this single point. During the detection process, the gasket pressure sensor 83 detects the pressure received by the single-point support member 8 in real time and transmits the data to the display screen for display. When the touch screen is damaged under the action of the single-point pressure or reaches the preset detection pressure limit, stop the detection and record the relevant data. After the detection is completed, the electric cylinder 3 drives the pressure plate 5 to reset, perform a reset operation on the single-point support member 8 through the pressure regulator 85, take out the touch screen, and complete the single-point pressure resistance detection.

[0055] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A touch screen compression resistance detection device, characterized in that: It includes a body (1) and a U-shaped support frame (2) installed on the body (1). An electric cylinder (3) is installed at the top of the support frame (2). The moving end of the electric cylinder (3) is installed with a mounting frame (4), and a pressure plate (5) is installed at the bottom end of the mounting frame (4). A sensor for detecting the pressure condition of the pressure plate (5) is provided on the mounting frame (4). A multi-point planar support platform (6) located below the pressure plate (5) is inlaid at the top of the body (1). The touch screen is subjected to full-screen and single-point compressive tests through the multi-point planar support platform (6). A display screen is inlaid at the front end of the body (1), and device data is displayed through the display screen. The multi-point planar support platform (6) includes a rectangular platform (9) and a number of groups of grooves (7) arranged in a rectangular array and opened on the rectangular platform (9). A single-point support member (8) is provided inside the groove (7). The single-point support member (8) includes a rectangular planar block (81) at the top, an anti-loosening column (82) at the bottom of the rectangular planar block (81), and an annular gasket pressure sensor (83) installed at the bottom of the anti-loosening column (82). An adjusting member (84) is installed at the bottom end of the gasket pressure sensor (83). The anti-loosening column (82) and the adjusting member (84) are respectively adjusted by two groups of pressure regulators (85). The pressure of the adjusting member (84) is adjusted by one group of pressure regulators (85) to lift the rectangular planar block (81) by the adjusting member (84) for single-point extrusion detection of the touch screen. The pressure of the anti-loosening column (82) is adjusted by the other group of pressure regulators (85) to expand the anti-loosening column (82) and make it contact with the inner wall of the groove (7) to stably support the single-point support member (8).

2. The touch screen compressive strength detection device according to claim 1, wherein: The anti-loosening column (82) and the adjusting member (84) in each single-point support member (8) are respectively communicated with two groups of pressure regulators (85) through pipelines. The two groups of pressure regulators (85) corresponding to each single-point support member (8) are respectively installed at both ends of the body (1) and arranged according to the sorting method of the single-point support members (8).

3. The touch screen compressive strength detection device according to claim 1, wherein: The groove (7) includes a rectangular groove (71) opened at the top, a large circular groove (72) in the middle, and a small circular groove (73) at the bottom. The rectangular planar block (81) is located in the rectangular groove (71), and the rectangular planar block (81) is flush with the top of the rectangular platform (9). The anti-loosening column (82) and the gasket pressure sensor (83) are located in the large circular groove (72). After the anti-loosening column (82) expands, it fits against the large circular groove (72) to stabilize the rectangular planar block (81). The adjusting member (84) is located in the small circular groove (73). The adjusting member (84) is installed in the small circular groove (73) through a bolt, and holes for pipelines and wires to be led out are provided at the bottom of the groove (7).

4. The touch screen compressive strength detection device according to claim 1, characterized in that: The rectangular planar block (81) includes a metal block (811) and a diversion channel (812) formed in the metal block (811) for circulation. There is heat-conducting oil in the diversion channel (812) of the metal block (811). During the extrusion process, the metal block (811) generates heat, causing local thermal expansion. After the heat-conducting oil is locally heated, it will automatically flow, making the metal block (811) uniformly heated and avoiding local expansion of the metal block (811) to block the groove body (7).

5. A touch screen compressive strength detection device according to claim 1, characterized in that: The anti-loosening column (82) includes a cylinder (821) and an annular groove (822) formed on the side surface of the cylinder (821). A flexible metal ring (823) is installed on the side surface of the cylinder (821) and located on the annular groove (822). The annular groove (822) is closed by the flexible metal ring (823) to form a cavity. A column tube (824) is installed at the bottom end of the cylinder (821), and a flow channel (825) connecting the column tube (824) and the annular groove (822) is provided inside the cylinder (821). The column tube (824) is connected to a pressure regulator (85) through a pipeline. Oil is introduced into the annular groove (822) through the pressure regulator (85) to change the pressure inside the flexible metal ring (823), causing the flexible metal ring (823) to expand outward and firmly fix it inside the groove body (7).

6. The touch screen compressive strength detection device according to claim 5, wherein: The adjusting member (84) includes an annular groove (841) with a C-shaped cross-section. An annular platform (842) is provided inside the annular groove (841), and an annular piston (843) is installed at the bottom end of the annular platform (842). The inner and outer sides of the annular platform (842) at the top of the annular piston (843) are connected to the inner wall of the annular groove (841) through a sealing structure. The column tube (824) passes through the annular groove (841) and the annular platform (842). A conduit (844) is installed at the bottom end of the annular groove (841), and the conduit (844) is connected to a pressure regulator (85) through a pipeline. Oil is introduced into the annular groove (841) through the pressure regulator (85) to change the pressure inside the annular groove (841), causing the oil to lift the annular piston (843) to move, pushing the anti-loosening column (82) and the rectangular planar block (81) thereon to move, and adjusting the pressure of the single-point support member (8) on the touch screen.

7. The touch screen compressive strength detection device according to claim 1, wherein: The pressure regulator (85) includes a pressure pipe (851) and a sealing end plate (852) installed at the front end of the pressure pipe (851). A rotatable sealing column (853) is provided at the center of the sealing end plate (852), and a knob (854) is installed at the front end of the sealing column (853). A threaded column (855) is installed at the rear end of the sealing column (853). An irregular guide column (856) is threadedly connected to the threaded column (855). A slidable annular bracket (857) is provided on the irregular guide column (856), and the annular bracket (857) is installed on the inner wall of the pressure pipe (851). A circular piston (858) is installed at the end of the irregular guide column (856). By adjusting the position of the circular piston (858), the hydraulic oil is discharged to adjust the pressure on the anti-loosening column (82) and the adjusting member (84).

8. A method for detecting the compressive resistance of a touch screen, characterized in that, For a touch screen compressive strength detection device according to any one of claims 1-7, the specific operation is as follows: S1. First, the electric cylinder (3) pushes the pressure plate (5) downward to contact the multi-point planar support table (6). Check the pressure of each single-point support member (8) in contact with the pressure plate (5). After adjusting the pressure through the adjusting member (84) to make the pressure of each single-point support member the same, lock the single-point support member (8) through the anti-loosening column (82). Finally, the electric cylinder (3) drives the pressure plate (5) to return to its original position; S2. When performing full-screen compressive strength detection on the touch screen, place the touch screen on the multi-point planar support table (6). Push the pressure plate (5) downward through the electric cylinder (3) to make the pressure plate (5) contact the touch screen, and check the pressure of the pressure plate (5) to detect the full-screen compressive strength ability of the touch screen; S3. When performing single-point compressive strength detection on the touch screen, place the touch screen on the multi-point planar support table (6). Push the pressure plate (5) downward through the electric cylinder (3) to make the pressure plate (5) contact the touch screen. After reaching the set pressure value, the electric cylinder (3) stops. According to the position to be detected, drive the single-point support member (8) at that position. First, cancel the locking of the single-point support member (8) at that position by the anti-loosening column (82), and the adjusting member (84) is lifted to make the single-point support member (8) move upward to detect the compressive performance of a certain part of the touch screen by applying pressure from the bottom of the touch screen.

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