Touch screen pressure resistance detection device and method

Abstract

The present invention relates to the field of touch screen detection technology and discloses a touch screen pressure resistance detection device and method, comprising a body and a U-shaped support frame mounted on the body, an electric cylinder mounted on the top of the support frame, a mounting frame mounted on the movable end of the electric cylinder, a pressure plate mounted on the bottom of the mounting frame, and a sensor for detecting the pressure of the pressure plate on the mounting frame. The invention's design of a multi-point planar support platform and a single-point support member allows for both full-screen pressure resistance testing and testing of specific single points on the touch screen, meeting diverse testing needs and comprehensively and accurately evaluating the pressure resistance of the touch screen. Compared to traditional testing methods, this significantly improves detection efficiency and accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screen detection, and in particular to a touch screen pressure resistance detection device and method. Background Art

[0002] As a key component for human-computer interaction in modern smart devices, touchscreens are widely used in a variety of electronic products, including smartphones, tablets, and in-vehicle central control systems. As users' expectations for touchscreen user experience continue to rise and the challenges touchscreens face in complex usage scenarios increase, their quality and reliability are becoming increasingly important. Compressive strength is a key indicator of touchscreen quality.

[0003] In traditional touch screen pressure resistance testing, relatively simple testing methods are often used. For example, some companies use testing equipment that combines a fixed plane support with a single pressure block. This type of equipment can only perform a rough pressure test on the entire touch screen, and cannot accurately test different areas of the touch screen, making it difficult to detect defects in the local pressure resistance of the touch screen. In addition, some testing equipment lacks precision in pressure control and unstable pressure application, resulting in large deviations in test results and an inability to accurately assess the true pressure resistance of the touch screen. At the same time, traditional testing equipment often lacks the ability to collect and analyze pressure data in real time during the testing process, making it difficult to form a comprehensive and scientific test report, which is not conducive to improving and optimizing product quality.

[0004] With the continuous advancement of touchscreen technology, the structures and materials of new touchscreens are becoming increasingly complex, placing higher demands on testing equipment. The emergence of new products such as flexible and large-size touchscreens requires testing equipment that can adapt to the characteristics of different touchscreen types, enabling more accurate and flexible testing. Therefore, developing touchscreen compression testing equipment capable of precise full-screen and single-point pressure testing, precise pressure control, and comprehensive data collection and analysis is urgently needed to meet industry development needs and improve the quality of touchscreen products. Summary of the Invention

[0005] In response to the above-mentioned shortcomings of the existing technology, the present invention provides a touch screen pressure resistance testing device and method, which can detect specific single points and the entire screen of the touch screen, meet diverse testing needs, and comprehensively and accurately evaluate the pressure resistance performance of the touch screen.

[0006] The present invention provides the following technical solution: a touch screen pressure resistance detection device, comprising a body and a U-shaped support frame mounted on the body, an electric cylinder mounted on the top of the support frame, a mounting frame mounted on the movable end of the electric cylinder, a pressure plate mounted on the bottom end of the mounting frame, and a sensor for detecting the pressure of the pressure plate provided on the mounting frame;

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

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

[0009] The anti-loosening column and the adjusting member are adjusted by two sets of pressure regulators respectively. The pressure of the adjusting member is adjusted by one set of pressure regulators so that the adjusting member lifts the rectangular plane block for single-point squeeze detection of the touch screen.

[0010] Another set of pressure regulators adjusts the pressure of the anti-loosening column, so that the anti-loosening column expands and contacts the inner wall of the tank body to stably support the single-point support.

[0011] Preferably, the anti-loosening column and the adjusting member in each of the single-point support members are connected to two sets of pressure regulators through pipes respectively, and the two sets 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 trough body includes a rectangular groove at the top, a large circular groove in the middle, and a small circular groove at the bottom, and the rectangular plane block is located in the rectangular groove, the rectangular plane 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, the anti-loosening column fits into the large circular groove after expansion, so that the rectangular plane block is stable, the adjusting part is located in the small circular groove, the adjusting part is installed in the small circular groove by bolts, and the bottom of the trough body is provided with holes for pipe and line outlet.

[0013] Preferably, the rectangular plane block includes a metal block and a guide channel for circulation opened in the metal block, and heat transfer oil is provided in the guide channel of the metal block. The metal block generates heat during the extrusion process, resulting in local thermal expansion. The heat transfer oil will automatically flow after being locally heated, so that the metal block is heated evenly, thereby preventing local expansion of the metal block from blocking the trough body.

[0014] Preferably, the anti-loosening column includes a cylinder and an annular groove opened on the side of the cylinder, a flexible metal ring located on the annular groove is installed on the side of the cylinder, and 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 connecting the column tube and the annular groove is provided inside the cylinder, the column tube is connected to the pressure regulator through a pipeline, and oil 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 outward and is firmly fixed in the groove body.

[0015] Preferably, the adjusting member includes an annular groove with a C-shaped cross-section, and an annular platform is provided inside the annular groove, and an annular piston is installed at the bottom end of the annular platform. The inner and outer sides of the annular platform on 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, and the conduit is connected to the pressure regulator through a pipeline. Oil is introduced into the annular groove through the pressure regulator, and the pressure in the annular groove is changed, so that the oil lifts the annular piston to move, pushes the anti-loosening column and the rectangular plane block thereon to move, and adjusts 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, and 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 threaded special-shaped guide column is provided on 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, and the oil is discharged by adjusting the position of the circular piston to adjust the pressure of the anti-loosening column and the adjusting part.

[0017] A touch screen pressure resistance detection method, the specific operations are as follows:

[0018] S1. First, the electric cylinder pushes the pressure plate downward and contacts the multi-point flat support platform. Check the pressure of each single-point support member contacting the pressure plate, and adjust the pressure through the adjustment member to make the pressure of each single-point support member the same. Lock the single-point support member with the anti-loosening column, and finally the electric cylinder drives the pressure plate back to its original position.

[0019] S2. When testing the full-screen pressure resistance of the touch screen, place the touch screen on a multi-point flat support platform, use the electric cylinder to push the pressure plate downward so that the pressure plate contacts the touch screen, and check the pressure of the pressure plate to test the full-screen pressure resistance of the touch screen;

[0020] S3. When testing the single-point pressure resistance of the touch screen, place the touch screen on a multi-point flat support platform, and use the electric cylinder to push the pressure plate downward so that the pressure plate contacts the touch screen. After reaching the set pressure value, the electric cylinder stops. According to the position to be tested, the single-point support member at that position is driven. First, the lock of the single-point support member at that position by the anti-loosening column is released, and the adjustment member is lifted to move the single-point support member upward. Pressure is applied from the bottom of the touch screen to test the pressure resistance performance of a certain point on the touch screen.

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

[0022] (1) The design of multi-point plane support platform and single-point support can not only perform full-screen pressure resistance testing, but also test specific single points of the touch screen. The detection mode can be switched between the two at will to meet diverse detection needs and comprehensively and accurately evaluate the pressure resistance performance of the touch screen. Compared with traditional detection methods, the detection efficiency and accuracy are greatly improved.

[0023] (2) Through the linkage between the multi-point plane support platform and the oil pressure system, the pressure adjustment of the single-point support is realized, so that the touch screen is evenly stressed at each point during detection, ensuring that the pressure values in the full-screen and single-point detection accurately match the preset requirements. The pressure data of each support point is displayed in real time during the pre-adjustment stage, supporting the operator to make instant adjustments, eliminating the problem of uneven pressure at multiple points, and improving the consistency and repeatability of detection.

[0024] (3) By applying uniform pressure on a multi-point planar support platform, the real usage scenario is simulated to evaluate the overall structural strength of the touch screen. The upward pressure of the single-point support component is independently controlled to simulate local high stress, such as button pressing and corner impact, and adapt to various quality test standards. At the same time, when a single single-point support component moves upward and applies pressure, the remaining single-point support components are pressed against the touch screen to prevent it from moving during single-point detection.

[0025] (4) The rectangular plane blocks and anti-loosening columns in the single-point support can prevent failures caused by displacement due to vibration or pressure fluctuations during detection and temperature caused 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 This is a schematic diagram of the structure of the multi-point planar support platform of the present invention;

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

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the split structure;

[0030] Figure 5This is a schematic diagram of the rectangular plane block structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the anti-loosening column structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the adjusting member of the present invention;

[0033] Figure 8 This is a schematic structural diagram of the pressure regulator of the present invention;

[0034] Figure 9 It is a schematic diagram of the tank structure of the present invention.

[0035] In the figure: 1. Machine body; 2. Support frame; 3. Electric cylinder; 4. Mounting frame; 5. Pressure plate; 6. Multi-point flat support platform; 7. Trough body; 8. Single-point support member; 9. Rectangular platform; 81. Rectangular flat block; 82. Anti-loosening column; 83. Gasket pressure sensor; 84. Adjustment member; 85. Pressure regulator; 71. Rectangular trough; 72. Large circular trough; 73. Small circular trough; 811. Metal block; 812. Diversion flow Channel; 821, cylinder; 822, annular groove; 823, flexible metal ring; 824, column tube; 825, flow channel; 841, annular groove; 842, annular platform; 843, annular piston; 844, conduit; 851, pressure tube; 852, sealing end plate; 853, sealing column; 854, knob; 855, threaded column; 856, special-shaped guide column; 857, annular bracket; 858, circular piston. DETAILED DESCRIPTION

[0036] In order to make the purpose, 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 drawings of the embodiments of the present disclosure. In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of known functions and known components to avoid unnecessary confusion of the concepts of the present invention.

[0037] See also Figure 1 , place the machine body 1 steadily on the work site, ensuring that its bottom is in full contact with the ground. Use a spirit level to calibrate the levelness of the machine body 1 to ensure the overall stability of the equipment. Install a U-shaped support frame 2 on top of the machine body 1 and securely connect the support frame 2 to the machine body 1 with bolts. During the installation process, strict measurement and positioning must be performed to ensure that the support frame 2 is perpendicular to the machine body 1, providing a precise reference for subsequent component installation.

[0038] Install the electric cylinder 3 on top of the support frame 2, ensuring that the installation position of the electric cylinder 3 is accurate so that its movable end can move vertically up and down. Fix the mounting frame 4 to the movable end of the electric cylinder 3. During installation, ensure that the mounting frame 4 and the movable end of the electric cylinder 3 are tightly connected and not loose. Install the pressure plate 5 at the bottom of the mounting frame 4. At the same time, install the sensor used to detect the pressure of the pressure plate 5 in the appropriate position of the mounting frame 4. The front end of the machine body 1 is embedded with a display screen to display various data during the equipment testing process. The sensor must be installed in accordance with the operating manual to ensure that it can accurately collect pressure data and is properly connected to the equipment's data transmission system.

[0039] See Figure 2 The multi-point planar support platform 6 includes a rectangular platform 9, on which a plurality of groups of slots 7 are arranged in a rectangular array. Each slot 7 is provided with a single-point support member 8, and the specific structure is as follows:

[0040] See Figure 3 and Figure 4 Single-point support 8 consists 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 anti-loosening column 82, and an adjustment member 84 at the bottom of gasket pressure sensor 83. Rectangular planar block 81 is used to contact the touch screen and withstand pressure; gasket pressure sensor 83 can detect the pressure in real time; anti-loosening column 82 and adjustment member 84 are controlled and adjusted by two sets of pressure regulators 85.

[0041] See Figure 9 The trough body 7 includes a rectangular trough 71 at the top, a large circular trough 72 in the middle, and a small circular trough 73 at the bottom. A rectangular flat block 81 is installed in the rectangular trough 71 and is flush with the top of the rectangular platform 9 to ensure the flatness of the touch screen when placed. The anti-loosening column 82 and the gasket pressure sensor 83 are located in the large circular trough 72. When the anti-loosening column 82 expands, it can fit the inner wall of the large circular trough 72 to achieve stable locking of the single-point support 8, preventing the single-point support 8 from shaking due to excessive force during the pressure test. The adjustment member 84 is installed in the small circular trough 73 and is fixed to the small circular trough 73 by bolts. At the same time, a hole is provided at the bottom of the trough body 7 for pipes and lines to be led out and connected to components such as the pressure regulator 85.

[0042] See Figure 5The rectangular plane block 81 is composed of a metal block 811 and a circulating guide channel 812 opened in the metal block 811, and the guide channel 812 is filled with heat transfer oil. During the extrusion process, the heat generated by the metal block 811 will cause local expansion, and the heat transfer oil will automatically flow after being heated, so that the metal block 811 can be heated evenly, avoiding blocking the slot body 7 due to excessive local expansion, and avoiding the metal block 811 from being affected by micro-movement in the rectangular slot 71. During the single-point compression test, the metal block 811 needs to move up a micro distance. If the metal block 811 is locally heated and expanded excessively and fits the rectangular slot 71, it will affect the movement of the metal block 811. Therefore, the heat transfer oil in the guide channel 812 can make the metal block 811 heated evenly, avoiding local thermal expansion of the metal block 811. The gap between the rectangular plane block 81 and the rectangular slot 71 is less than 0.2mm, and the gap cannot be too large.

[0043] See Figure 6 The anti-loosening column 82 includes a cylindrical body 821, with an annular groove 822 provided on the side of the cylindrical body 821. A flexible metal ring 823 is mounted on the side of the annular groove 822. The annular groove 822 is sealed by the flexible metal ring 823 to form a cavity. A column tube 824 is mounted at the bottom end of the cylindrical body 821, and a flow channel 825 is provided inside the column tube 824, which connects the column tube 824 and the annular groove 822. The column tube 824 is connected to the pressure regulator 85 through a pipe. When the pressure regulator 85 introduces oil into the annular groove 822, the pressure in the flexible metal ring 823 is changed, causing it to expand outward and firmly fix in the large circular groove 72, thereby achieving 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 canceled through the pressure regulator 85.

[0044] See 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. The inner and outer sides of the annular platform 842 on 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 in the annular groove 841 can be changed, so that the oil pushes up the annular piston 843 to move, thereby pushing the anti-loosening column 82 and the rectangular plane block 81 thereon to move, thereby adjusting 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 on the bottom of the cylinder 821 by bolts, and the fixed end on the outside 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 passes through the adjustment part 84 to be guided out from the hole at the bottom of the groove body 7. The gasket pressure sensor 83 is also guided out from it through the line, which makes it convenient to install the single-point support part 8.

[0046] See Figure 8 The pressure regulator 85 includes a pressure tube 851 and a sealing end plate 852 mounted at the front end of the pressure tube 851. A rotatable sealing column 853 is provided at the center of the sealing end plate 852. A knob 854 is mounted at the front end of the sealing column 853, and a threaded column 855 is mounted at the rear end. The threaded column 855 is threadedly connected to a shaped guide column 856. The shaped guide column 856 is provided with a slidable annular bracket 857, which is mounted on the inner wall of the pressure tube 851. A circular piston 858 is mounted at the end of the shaped guide column 856. By rotating the knob 854, the sealing column 853 and the threaded column 855 rotate, thereby moving the shaped guide column 856, adjusting the position of the circular piston 858, controlling the oil discharge, and achieving pressure regulation of the anti-loosening column 82 and the adjusting member 84.

[0047] The anti-loosening column 82 and the adjusting member 84 in each single-point support member 8 are respectively connected to the two sets of pressure regulators 85 through pipes, and the two sets 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 member 8, which is convenient for centralized control and management.

[0048] By providing a driving device, connecting 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] 1. Equipment pre-adjustment

[0050] Start the equipment, and the electric cylinder 3 pushes the pressure plate 5 to move slowly downward until it contacts the multi-point planar support platform 6. At this time, the equipment collects the pressure data of each single-point support 8 in real time and displays it on the display screen. The operator observes the pressure of each single-point support 8. If there is any inconsistent pressure, the pressure is adjusted by adjusting the adjustment part 84 and the pressure regulator 85 of the corresponding single-point support 8 until the pressure of each single-point support is the same. After the pressure adjustment is completed, pressure is applied to the anti-loosening column 82 again through the pressure regulator 85 to expand it and fit tightly against the inner wall of the trough body 7, thereby locking the single-point support 8. After confirming that the pressure of all single-point support parts 8 is stable and the support is firm, the electric cylinder 3 drives the pressure plate 5 back to its original position to complete the equipment pre-adjustment.

[0051] 2. Touch screen full screen pressure resistance test

[0052] Place the touch screen to be tested stably on the multi-point plane support platform 6, ensuring that the touch screen completely covers the surface of the multi-point plane support platform 6 and is positioned accurately. 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 pressure of the pressure plate 5, the sensor on the mounting bracket 4 collects pressure data in real time and transmits it to the equipment control system. The display screen simultaneously displays the pressure changes. Continue to increase the pressure until the preset test pressure value is reached or the touch screen is damaged. Record the pressure data at this time to evaluate the full-screen pressure resistance of the touch screen. After the test is completed, the electric cylinder 3 drives the pressure plate 5 to move up and reset, and removes the tested touch screen.

[0053] 3. Touch screen single point pressure test

[0054] Place another touchscreen to be tested on the multi-point planar support platform 6, also ensuring its accurate positioning. Activate the electric cylinder 3, pushing the pressure plate 5 downward into contact with the touchscreen. Gradually increase pressure according to a preset program. When the set pressure value is reached, the electric cylinder 3 stops. Based on the predetermined test location, the device control system activates the corresponding single-point support member 8. First, the pressure within the anti-loosening column 82 is released via the pressure regulator 85, unlocking the single-point support member 8. Then, oil is introduced into the annular groove 841 of the adjustment member 84, lifting it and driving the rectangular planar block 81 upward. Pressure is applied to the designated location from the bottom of the touchscreen to test the pressure resistance of the touchscreen at that single point. During the test, the gasket pressure sensor 83 measures the pressure applied to the single-point support member 8 in real time and transmits the data to the display screen for display. If the touchscreen is damaged by the single-point pressure or reaches the preset test pressure limit, testing ceases and the relevant data is recorded. After the test is completed, the electric cylinder 3 drives the pressure plate 5 to reset, and the single-point support member 8 is reset through the pressure regulator 85. The touch screen is taken out, and the single-point pressure resistance test is completed.

[0055] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A touch screen compression testing device, characterized by: The invention comprises a machine body (1) and a U-shaped support frame (2) mounted on the machine body (1), an electric cylinder (3) being mounted on the top of the support frame (2), a mounting frame (4) being mounted on the movable end of the electric cylinder (3), a pressure plate (5) being mounted on the bottom end of the mounting frame (4), and a sensor for detecting the pressure condition of the pressure plate (5) being provided on the mounting frame (4); The top of the body (1) is inlaid with a multi-point plane support platform (6) located below the pressure plate (5), and the touch screen is subjected to full-screen and single-point pressure resistance testing through the multi-point plane support platform (6). The front end of the body (1) is inlaid with a display screen, and device data is displayed through the display screen; The multi-point planar support platform (6) includes a rectangular platform (9) and a plurality of groups of trough bodies (7) arranged on the rectangular platform (9) and distributed in a rectangular array. A single-point support member (8) is provided inside the trough body (7). The single-point support member (8) includes a rectangular plane block (81) at the top and an anti-loosening column (82) at the bottom of the rectangular plane block (81). A circular ring-shaped gasket pressure sensor (83) is 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 adjusted by two sets of pressure regulators (85) respectively, and the pressure of the adjusting member (84) is adjusted by one set of pressure regulators (85) so that the adjusting member (84) lifts the rectangular plane block (81) for single-point extrusion detection of the touch screen; Another set of pressure regulators (85) adjusts the pressure of the anti-loosening column (82), causing the anti-loosening column (82) to expand and contact the inner wall of the trough body (7), thereby stably supporting the single-point support member (8).

2. A touch screen compression testing device according to claim 1, characterized in that: The anti-loosening column (82) and the regulating member (84) in each of the single-point supporting members (8) are respectively connected to the two sets of pressure regulators (85) through pipelines, and the two sets of pressure regulators (85) corresponding to each single-point supporting member (8) are respectively installed at both ends of the machine body (1) and arranged according to the order of the single-point supporting members (8).

3. The touch screen compression testing device according to claim 1, characterized in that: The trough body (7) includes a rectangular trough (71) at the top, a large circular trough (72) in the middle, and a small circular trough (73) at the bottom, and a rectangular plane block (81) is located in the rectangular trough (71). The rectangular plane 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 trough (72). After the anti-loosening column (82) expands, it fits the large circular trough (72) to stabilize the rectangular plane block (81). The adjusting member (84) is located in the small circular trough (73). The adjusting member (84) is installed in the small circular trough (73) by bolts, and the bottom of the trough body (7) is provided with a hole for leading out pipes and lines.

4. The touch screen compression testing device according to claim 1, characterized in that: The rectangular plane block (81) includes a metal block (811) and a flow guide channel (812) opened and circulated in the metal block (811), and heat transfer oil is provided in the flow guide channel (812) of the metal block (811). The metal block (811) generates heat during the extrusion process, resulting in local thermal expansion. The heat transfer oil automatically flows after being locally heated, so that the metal block (811) is heated evenly, thereby preventing the local expansion of the metal block (811) from blocking the tank body (7).

5. The touch screen compression testing device according to claim 1, characterized in that: The anti-loosening column (82) includes a cylindrical body (821) and an annular groove (822) provided on the side of the cylindrical body (821). A flexible metal ring (823) located on the annular groove (822) is installed on the side of the cylindrical body (821), and 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 cylindrical body (821), and a flow channel (825) connecting the column tube (824) and the annular groove (822) is provided inside the cylindrical body (821). The column tube (824) is connected to the pressure regulator (85) through a pipeline, and oil is introduced into the annular groove (822) through the pressure regulator (85), thereby changing the pressure in the flexible metal ring (823) so that the flexible metal ring (823) expands outward and is firmly fixed in the groove body (7).

6. The touch screen compression testing device according to claim 5, characterized in that: The regulating member (84) includes an annular groove (841) with a C-shaped cross section, and 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 inside and outside of the annular platform (842) on 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). The conduit (844) is connected to the pressure regulator (85) through a pipeline. Oil is introduced into the annular groove (841) through the pressure regulator (85), changing the pressure in the annular groove (841) so that the oil lifts the annular piston (843) to move, pushing the anti-loosening column (82) and the rectangular plane block (81) thereon to move, thereby adjusting the pressure of the single-point support member (8) on the touch screen.

7. The touch screen compression testing device according to claim 1, characterized in that: The pressure regulator (85) includes a pressure tube (851) and a sealing end plate (852) installed at the front end of the pressure tube (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), a threaded special-shaped guide column (856) is provided on the threaded column (855), a slidable annular bracket (857) is provided on the special-shaped guide column (856), and the annular bracket (857) is installed on the inner wall of the pressure tube (851), and a circular piston (858) is installed at the end of the special-shaped guide column (856), and by adjusting the position of the circular piston (858), oil is discharged, and the pressure of the anti-loosening column (82) and the adjusting member (84) is adjusted.

8. A touch screen pressure resistance detection method, characterized in that: The touch screen compression resistance detection device according to any one of claims 1 to 7 is used, and the specific operations are as follows: S1. First, the electric cylinder (3) pushes the pressure plate (5) downward and contacts the multi-point plane support platform (6). The pressure of each single-point support member (8) in contact with the pressure plate (5) is checked. After adjusting the pressure by the adjusting member (84), the pressure of each single-point support member is made the same. The single-point support member (8) is locked by the anti-loosening column (82). Finally, the electric cylinder (3) drives the pressure plate (5) to return to its original position. S2. When testing the full-screen pressure resistance of the touch screen, the touch screen is placed on a multi-point plane support table (6), and the pressure plate (5) is pushed downward by the electric cylinder (3) so that the pressure plate (5) contacts the touch screen, and the pressure of the pressure plate (5) is checked to test the full-screen pressure resistance of the touch screen; S3. When testing the single-point pressure resistance of the touch screen, the touch screen is placed on a multi-point plane support platform (6). The pressure plate (5) is pushed downward by the electric cylinder (3) so that the pressure plate (5) contacts the touch screen. After reaching the set pressure value, the electric cylinder (3) stops. According to the position to be tested, the single-point support member (8) at that position is driven. First, the locking of the single-point support member (8) at that position by the anti-loosening column (82) is canceled. The adjusting member (84) is lifted to move the single-point support member (8) upward. Pressure is applied from the bottom of the touch screen to test the pressure resistance performance of a certain point of the touch screen.

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