Liquid crystal display screen module tension test equipment

Abstract

The invention relates to liquid crystal display module tension test equipment, which comprises a test box and a control panel fixedly mounted at the top of the test box, a positioning mechanism for placing a circuit board is arranged in the test box, and a moving mechanism for testing a display module is arranged on one side of the positioning mechanism. An air supply mechanism for fire prevention is arranged on one side, far away from the moving mechanism, of the positioning mechanism; the pressure sensor is pushed through the first deflector rod, at the moment, the sliding block drives the display screen module to move, the connector of the flexible flat cable and the circuit board is subjected to pulling force in the inclined direction, the rotating base plate slightly rotates, and it is guaranteed that the connecting position of the flexible flat cable and the display screen module body is subjected to uniform pulling force; the flexible flat cable is prevented from being torn from the display screen module body, light data are recorded through the light sensor, stress data are recorded in cooperation with the pressure sensor, the data are displayed through the control panel, and the situation that the display screen module needs to be damaged by the needed tensile force in the real environment is accurately tested.

Description

Technical Field

[0001] This invention relates to the field of display module testing technology, specifically to a tensile testing device for liquid crystal display modules. Background Technology

[0002] LCD modules are the core carrier of LCD technology and also serve as the core interface for human-computer interaction. Their technological evolution is moving towards higher resolution, lower power consumption, and stronger environmental adaptability. Before being shipped out of the factory, a portion of the LCD modules need to be randomly selected for tensile testing. In real-world applications, flexible ribbon cables are typically broken by pulling forces at an angle. However, existing display module tensile testing equipment pulls the flexible ribbon cable vertically from the interface for testing, making it difficult to accurately determine the required pulling force to damage the display module in a real environment. Furthermore, static electricity is generated on the surface of the display module during tensile testing. This static electricity may break down the internal circuitry of the module, generating localized high temperatures or electrical sparks, which can easily affect the surrounding environment. Summary of the Invention

[0003] The technical problem that this solution addresses is: (1) How to solve the problem that existing display module tensile testing equipment is difficult to accurately test how much tensile force is required to damage the display module in a real environment; (2) How to solve the problem that static electricity generated on the surface of the display module may break down the internal circuit of the module, generate local high temperature or electric sparks, and easily affect the surrounding environment.

[0004] The objective of this invention can be achieved through the following technical solution: a tensile testing device for a liquid crystal display module, comprising a test box and a control panel fixedly installed on its top, wherein the test box is provided with a positioning mechanism for placing circuit boards, a moving mechanism for testing the display module is provided on one side of the positioning mechanism, and a gas supply mechanism for fire prevention is provided on the side of the positioning mechanism away from the moving mechanism. The moving mechanism includes a slider that is slidably connected to the bottom of the inner wall of the test chamber via a guide rail. A support column is fixedly installed on the top of the slider. A rotating base is rotatably mounted on the top of the support column via a bearing seat. A first positioning plate for limiting the display module is fixedly installed on both sides of the top of the rotating base.

[0005] A further technical improvement of the present invention is that: a rotating seat is fixedly installed at the top of the slider away from the support column, an L-shaped flipping frame is rotatably arranged on the top of the rotating seat, a pressing plate is rotatably arranged at the end of the L-shaped flipping frame away from the rotating seat, a rubber layer is fixedly arranged at the bottom of the pressing plate, the position of the rubber layer corresponds to the position of the rotating base, and the connection between the pressing plate and the L-shaped flipping frame is on the same central axis as the bearing seat.

[0006] A further technical improvement of the present invention is that: an L-shaped groove is provided in the middle of the L-shaped flipping frame, and a pressure sensor is fixedly installed on the inner wall of the end of the L-shaped groove near the pressing plate. The pressure sensor is existing technology.

[0007] A further technical improvement of the present invention is that: a first electric push rod is fixedly connected to the rear side of the inner wall of the test box, the first electric push rod is arranged parallel to the guide rail, and a first lever is fixedly connected to the extended end of the first electric push rod, the first lever being movably connected to the L-shaped slide groove.

[0008] A further technical improvement of the present invention is that a tension spring is fixedly connected to the back of the slider, and the end of the tension spring away from the slider is fixedly connected to the rear side of the inner wall of the test chamber.

[0009] A further technical improvement of the present invention is that: a light sensor is fixedly installed on the top of the inner wall of the test box. The light sensor is existing technology, and its position corresponds to the position of the rotating chassis. By controlling the extended end of the first electric push rod to extend from its shortest length to half its length, the first lever slides from the end of the L-shaped groove away from the pressing plate to its middle, driving the L-shaped flip frame to rotate. This causes the rubber layer to press against the top of the display module, effectively fixing the display module in conjunction with the rotating chassis. The extended end of the first electric push rod continues to extend to its longest length, and the first lever slides from the middle of the L-shaped groove to its end near the pressing plate. At this time, the first lever contacts the pressure sensor, and the section of the L-shaped groove near the pressing plate is parallel to the guide rail. During this process, the rubber layer remains stationary. The pressure sensor and L-shaped flip frame are pushed by the first lever. At this time, the slider moves the display module, causing the interface between the flexible cable and the circuit board to be subjected to a pulling force in an inclined direction. During the movement of the display module, the rotating chassis rotates slightly to ensure that the connection between the flexible cable and the display module body is subjected to uniform tension, preventing the flexible cable from tearing from the display module body. The light sensor records light data in a timely manner, and the pressure sensor records force data. The light sensor and pressure sensor transmit the data to the processor in the control panel, and then the control panel displays the data to accurately test how much tension is required to damage the display module in a real environment.

[0010] A further technical improvement of the present invention is that: the gas supply mechanism includes a connecting seat, a rotating plate is rotatably provided on the side of the connecting seat, and a rubber strip for pressing the edge of the circuit board is fixedly provided at the end of the rotating plate away from the connecting seat.

[0011] A further technical improvement of the present invention is that: a second electric push rod arranged longitudinally is fixedly installed on the top of the inner wall of the test box, a second lever is fixedly installed on the extended end of the second electric push rod, and a straight slide groove is opened in the middle of the rotating plate, the straight slide groove being movably connected to the second lever.

[0012] A further technical improvement of the present invention is that: an air inlet pipe is fixedly inserted into the bottom of the test box, the input end of the air inlet pipe is connected to an external gas supply device for inputting carbon dioxide gas, and a sealing cover is fixedly installed on the extended end of the second electric push rod, and the position of the output end of the air inlet pipe corresponds to the position of the sealing cover.

[0013] A further technical improvement of the present invention is that: an exhaust pipe is connected to the top of the side wall of the test chamber away from the air inlet pipe; by manually operating the control panel, the extended end of the second electric push rod is controlled to retract from its longest to its shortest position. During this process, the sealing cover is separated from the output end of the air inlet pipe, which facilitates the injection of carbon dioxide gas into the test chamber and forces the air in the test chamber out through the exhaust pipe, thereby reducing the oxygen content in the test chamber. This prevents static electricity generated on the surface of the display module from damaging the internal circuit of the module, generating local high temperature or electric sparks, and affecting the surrounding environment. At the same time, during the retraction of the extended end of the second electric push rod, it works in conjunction with the second lever to drive the rotating plate to rotate, so that the rubber strip presses the edge of the circuit board, thereby effectively preventing the circuit board from falling off during the tensile test.

[0014] Compared with the prior art, the beneficial effects of the present invention are: In use, this invention controls the extension of the first electric push rod to extend from its shortest length to half its original length, causing the first lever to slide from the end of the L-shaped groove away from the pressing plate to its middle, driving the L-shaped flip frame to rotate. This allows the rubber layer to press against the top of the display module, effectively fixing the display module in conjunction with the rotating base. The extension of the first electric push rod continues to extend to its maximum length, and the first lever slides from the middle of the L-shaped groove to its end near the pressing plate. At this point, the first lever contacts the pressure sensor, and the section of the L-shaped groove near the pressing plate is parallel to the guide rail. During this process, the rubber layer does not move. The first lever pushes the pressure sensor and the L-shaped flip frame together. The rotating frame moves the display module, causing the interface between the flexible cable and the circuit board to be subjected to a pulling force in an inclined direction. During the movement of the display module, the rotating chassis rotates slightly to ensure that the connection between the flexible cable and the display module body is subjected to uniform tension, preventing the flexible cable from tearing from the display module body. Light data is recorded in real time by a light sensor, and force data is recorded by a pressure sensor. The light sensor and pressure sensor transmit the data to the processor in the control panel, and then the control panel displays the data to accurately test how much tension is required to damage the display module in a real environment.

[0015] In use, this invention allows manual operation of the control panel to retract the extended end of the second electric push rod from its longest to its shortest position. During this process, the sealing cover separates from the output end of the air inlet pipe, facilitating the injection of carbon dioxide gas into the test chamber and forcing the air inside the test chamber out through the exhaust pipe. This reduces the oxygen content within the test chamber, preventing static electricity generated on the surface of the display module from damaging the internal circuitry and causing localized high temperatures or electrical sparks that could affect the surrounding environment. Simultaneously, as the extended end of the second electric push rod retracts, it works in conjunction with the second lever to rotate the rotating plate, causing the rubber strip to press against the edge of the circuit board, effectively preventing the circuit board from falling off during the tensile test. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 This is a three-dimensional schematic diagram of the moving mechanism structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 This is a three-dimensional schematic diagram of the gas supply mechanism structure of the present invention; Figure 6 This is a three-dimensional schematic diagram of the positioning mechanism structure of the present invention.

[0018] In the diagram: 1. Control panel; 2. Test chamber; 3. Sealed door; 4. Air supply mechanism; 5. Positioning mechanism; 6. Moving mechanism; 7. Exhaust pipe; 8. Light sensor; 401. Second electric push rod; 402. Linear slide; 403. Rotating plate; 404. Rubber strip; 405. Air inlet pipe; 406. Sealing cover; 407. Second lever; 408. Connecting seat; 501. Second positioning plate; 502. Placement platform; 503. Baffle; 504. Rubber pad; 505. Groove; 601. First electric push rod; 602. Rotating seat; 603. Slider; 604. Support column; 605. Bearing seat; 606. Rotating chassis; 607. First positioning plate; 608. Pressure sensor; 609. L-shaped slide; 610. L-shaped flipping frame; 611. First lever; 612. Rubber layer; 613. Pressing plate. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0020] Please see Figures 1-6 As shown, a tensile testing device for a liquid crystal display module includes a test box 2 and a control panel 1 fixedly installed on its top. The test box 2 is provided with a positioning mechanism 5 for placing circuit boards. A moving mechanism 6 for testing the display module is provided on one side of the positioning mechanism 5, and a fire-prevention gas supply mechanism 4 is provided on the side of the positioning mechanism 5 away from the moving mechanism 6.

[0021] Please see Figure 2 and Figure 3 As shown, the aforementioned moving mechanism 6 includes a slider 603 that is slidably connected to the bottom of the inner wall of the test chamber 2 via a guide rail. A support column 604 is fixedly installed on the top of the slider 603. A rotating base 606 is rotatably mounted on the top of the support column 604 via a bearing seat 605. A first positioning plate 607 for limiting the display module is fixedly installed on both sides of the top of the rotating base 606.

[0022] Please see Figure 3 and Figure 4As shown, a rotating seat 602 is fixedly installed at the top of the slider 603 away from the support column 604. An L-shaped flip frame 610 is rotatably mounted on the top of the rotating seat 602. A pressing plate 613 is rotatably mounted at the end of the L-shaped flip frame 610 away from the rotating seat 602. A rubber layer 612 is fixedly mounted at the bottom of the pressing plate 613. The position of the rubber layer 612 corresponds to the position of the rotating base 606. The connection between the pressing plate 613 and the L-shaped flip frame 610 is on the same central axis as the bearing seat 605. The dimensions of the rubber layer 612 and the pressing plate 613 are both smaller than the dimensions of the display module.

[0023] Please see Figure 3 and Figure 4 As shown, an L-shaped slide groove 609 is provided in the middle of the L-shaped flipping frame 610. A pressure sensor 608 is fixedly installed on the inner wall of the L-shaped slide groove 609 near the pressing plate 613. The pressure sensor 608 is existing technology.

[0024] Please see Figure 3 and Figure 4 As shown, a first electric push rod 601 is fixedly connected to the rear side of the inner wall of the test box 2. The first electric push rod 601 is arranged parallel to the guide rail, and a first lever 611 is fixedly connected to the extended end of the first electric push rod 601. The first lever 611 is movably connected to the L-shaped slide groove 609.

[0025] Please see Figure 3 As shown, a tension spring is fixedly connected to the back of the slider 603, and the end of the tension spring away from the slider 603 is fixedly connected to the rear side of the inner wall of the test box 2.

[0026] Please see Figure 2As shown, a light sensor 8 is fixedly installed on the top of the inner wall of the test box 2. The light sensor 8 is existing technology, and its position corresponds to the position of the rotating base 606. By controlling the extended end of the first electric push rod 601 to extend from its shortest length to half its length, the first lever 611 slides from the end of the L-shaped slide groove 609 away from the pressing plate 613 to the middle, driving the L-shaped flip frame 610 to rotate. This causes the rubber layer 612 to press on the top of the display module, effectively fixing the display module in conjunction with the rotating base 606. The extended end of the first electric push rod 601 continues to extend to its longest length, and the first lever 611 slides from the middle of the L-shaped slide groove 609 to the end near the pressing plate 613. At this time, the first lever 611 contacts the pressure sensor 608, and the section of the L-shaped slide groove 609 near the pressing plate 613... Parallel to the guide rail, the rubber layer 612 remains stationary during this process. The pressure sensor 608 and the L-shaped flip frame 610 are pushed by the first lever 611. At this time, the slider 603 moves the display module, causing the interface between the flexible cable and the circuit board to be subjected to a pulling force in an inclined direction. During the movement of the display module, the rotating chassis 606 rotates slightly to ensure that the connection between the flexible cable and the display module body is subjected to uniform tension, preventing the flexible cable from tearing from the display module body. The light sensor 8 records the light data in a timely manner, and the pressure sensor 608 records the force data. The light sensor 8 and the pressure sensor 608 transmit the data to the processor in the control panel 1, and then the control panel 1 displays the data to accurately test how much tension is required to damage the display module in a real environment.

[0027] Please see Figure 2 and Figure 5 As shown, the above-mentioned gas supply mechanism 4 includes a connecting seat 408, a rotating plate 403 is rotatably provided on the side of the connecting seat 408, and a rubber strip 404 for pressing the edge of the circuit board is fixedly provided at the end of the rotating plate 403 away from the connecting seat 408.

[0028] Please see Figure 5 As shown, a second electric push rod 401 arranged longitudinally is fixedly installed on the top of the inner wall of the test box 2. A second lever 407 is fixedly installed on the extended end of the second electric push rod 401. A straight slide groove 402 is opened in the middle of the rotating plate 403. The straight slide groove 402 is movably connected to the second lever 407.

[0029] Please see Figure 5 As shown, the bottom of the test box 2 is fixedly fitted with an air inlet pipe 405. The input end of the air inlet pipe 405 is connected to an external gas supply device for inputting carbon dioxide gas. The extended end of the second electric push rod 401 is also fixedly fitted with a sealing cover 406. The position of the output end of the air inlet pipe 405 corresponds to the position of the sealing cover 406.

[0030] Please see Figure 2 and Figure 5 As shown, the test chamber 2 has an exhaust pipe 7 connected to the top of its side wall away from the air inlet pipe 405. By manually operating the control panel 1, the extended end of the second electric push rod 401 is controlled to retract from its longest to its shortest position. During this process, the sealing cover 406 is separated from the output end of the air inlet pipe 405, which facilitates the injection of carbon dioxide gas into the test chamber 2 and forces the air in the test chamber 2 out through the exhaust pipe 7, thereby reducing the oxygen content in the test chamber 2. This prevents the static electricity generated on the surface of the display module from damaging the internal circuit of the module, generating local high temperature or electric sparks, and affecting the surrounding environment. At the same time, during the retraction of the extended end of the second electric push rod 401, the second lever 407 drives the rotating plate 403 to rotate, causing the rubber strip 404 to press the edge of the circuit board, thereby effectively preventing the circuit board from falling off during the tensile test.

[0031] Please see Figure 2 and Figure 6 As shown, the positioning mechanism 5 includes a placement platform 502 fixedly connected to the bottom of the inner wall of the test box 2. The top front and rear sides of the placement platform 502 are fixedly installed with second positioning plates 501 for fixing the circuit board. The placement platform 502 is fixedly connected to one end of the connecting seat 408.

[0032] Please see Figure 6 As shown, a baffle 503 is fixedly installed on the side of the placement platform 502 near the slider 603. A groove 505 is provided on the top of the baffle 503. Rubber pads 504 for protecting the circuit board are fixedly installed on both sides of the groove 505. Both rubber pads 504 are facing the placement platform 502.

[0033] Please see Figure 1 As shown, the test box 2 described above has a sealing door 3 hinged to its front.

[0034] Working Principle: In use, firstly, open the sealing door 3 and place the circuit board between the two second positioning plates 501 on top of the placement platform 502. Then, place the display module between the two first positioning plates 607 on top of the rotating chassis 606. At this time, the flexible ribbon cable of the display module passes through the groove 505 and connects to the interface on the circuit board. Then, close the sealing door 3, creating a low-light environment inside the test chamber 2. Manually operate the control panel 1 to retract the extended end of the second electric push rod 401 from its longest to its shortest position. During this process, the sealing cover 406 separates from the output end of the air inlet pipe 405, facilitating the injection of carbon dioxide gas into the test chamber 2. Air inside test chamber 2 is forced out through exhaust pipe 7, which helps reduce the oxygen content inside test chamber 2, preventing the fire from escalating and thus preventing static electricity generated on the surface of the display module from damaging the internal circuitry of the module, generating localized high temperatures or electric sparks, and affecting the surrounding environment. Simultaneously, as the extended end of the second electric push rod 401 retracts, it works in conjunction with the second lever 407 to rotate the rotating plate 403, causing the rubber strip 404 to press against the edge of the circuit board, effectively preventing the circuit board from falling off during the tensile test. By controlling the extended end of the first electric push rod 601 from its shortest length to half its original length, the first lever 611 moves away from the L-shaped groove 609. One end of the pressure plate 613 slides to its middle, causing the L-shaped flip frame 610 to rotate, so that the rubber layer 612 presses against the top of the display module. This, combined with the rotating base 606, effectively fixes the display module. The extended end of the first electric push rod 601 continues to extend to its maximum length, and the first lever 611 slides from the middle of the L-shaped groove 609 to its end near the pressure plate 613. At this time, the first lever 611 contacts the pressure sensor 608. The section of the L-shaped groove 609 near the pressure plate 613 is parallel to the guide rail. During this process, the rubber layer 612 does not move. The first lever 611 pushes the pressure sensor 608 and the L-shaped flip frame 610. The slider 603 moves the display module, causing the interface between the flexible cable and the circuit board to be subjected to a pulling force in an inclined direction. During the movement of the display module, the rotating chassis 606 rotates slightly to ensure that the connection between the flexible cable and the display module body is subjected to uniform tension, preventing the flexible cable from tearing from the display module body. The light sensor 8 records the light data in a timely manner, and the pressure sensor 608 records the force data. The light sensor 8 and the pressure sensor 608 transmit the data to the processor in the control panel 1, and then the control panel 1 displays the data to accurately test how much tension is required to damage the display module in a real environment.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A liquid crystal display module tension test device, comprising a test box (2) and a control panel (1) fixedly installed on the top of the test box, characterized in that: The inside of the test box (2) is provided with a positioning mechanism (5) for placing a circuit board, one side of the positioning mechanism (5) is provided with a moving mechanism (6) for testing a display screen module, and the side of the positioning mechanism (5) away from the moving mechanism (6) is provided with a gas supply mechanism (4) for fire prevention. The moving mechanism (6) comprises a sliding block (603) slidingly connected with the inner wall bottom of the test box (2) through a guide rail, a support column (604) fixedly installed at the top of the sliding block (603), and a rotating base plate (606) rotatably arranged at the top of the support column (604) through a bearing seat (605).

2. The liquid crystal display module tension testing apparatus of claim 1, wherein, The top of the sliding block (603) is fixedly installed with a rotating seat (602) away from one end of the support column (604), the top of the rotating seat (602) is rotatably provided with an L-shaped turnover frame (610), one end of the L-shaped turnover frame (610) is rotatably provided with a pressing plate (613), and the bottom of the pressing plate (613) is fixedly provided with a rubber layer (612) corresponding in position to the rotating base plate (606).

3. The tension testing apparatus for a liquid crystal display module according to claim 2, wherein The middle part of the L-shaped turnover frame (610) is provided with an L-shaped sliding groove (609), and the inner wall of one end of the L-shaped sliding groove (609) is fixedly installed with a pressure sensor (608).

4. The tension testing apparatus for a liquid crystal display module according to claim 3, wherein The rear side of the inner wall of the test box (2) is fixedly connected with a first electric push rod (601), the first electric push rod (601) is arranged in parallel with the guide rail, and the extending end of the first electric push rod (601) is fixedly connected with a first lever (611), and the first lever (611) is movably connected with the L-shaped sliding groove (609).

5. The tension testing apparatus for a liquid crystal display module according to claim 4, wherein The back of the sliding block (603) is fixedly connected with a tension spring, and one end of the tension spring away from the sliding block (603) is fixedly connected with the rear side of the inner wall of the test box (2).

6. The tension testing apparatus for a liquid crystal display module according to claim 5, wherein The top of the inner wall of the test box (2) is fixedly provided with a light sensor (8) corresponding in position to the rotating base plate (606).

7. The tension testing apparatus for a liquid crystal display module according to claim 1, wherein The gas supply mechanism (4) comprises a connecting seat (408), the side of the connecting seat (408) is rotatably provided with a rotating plate (403), and the end of the rotating plate (403) away from the connecting seat (408) is fixedly provided with a rubber strip (404) for pressing the edge of the circuit board.

8. The tension testing apparatus for a liquid crystal display module according to claim 7, wherein The top of the inner wall of the test box (2) is fixedly installed with a second electric push rod (401), the extending end of the second electric push rod (401) is fixedly installed with a second lever (407), the middle part of the rotating plate (403) is provided with a linear sliding groove (402), and the linear sliding groove (402) is movably connected with the second lever (407).

9. The liquid crystal display module tension testing apparatus of claim 8, wherein, The bottom of the test box (2) is fixedly inserted with an air inlet pipe (405), the extending end of the second electric push rod (401) is also fixedly installed with a sealing cover (406), and the position of the output end of the air inlet pipe (405) corresponds to the position of the sealing cover (406).

10. The tension testing apparatus for a liquid crystal display module according to claim 9, wherein The test box (2) is communicated with the exhaust pipe (7) away from the side wall top of the air inlet pipe (405).

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