A liquid crystal display panel impact resistance testing device

Abstract

The application provides a liquid crystal display screen impact resistance testing device, belonging to the technical field of display screen detection, and aims to solve the problem of tedious batch testing of manual fixing and removal of display screens in the prior art. The device comprises a workbench, a clamping device arranged on the top of the workbench, a launching device arranged above the workbench and supported by a vertical rail and launching test balls, a storage box arranged on one side of the workbench, a pushing opening and a discharging opening (the discharging opening is arranged on the side of the clamping device) arranged on the bottom of the storage box, a plurality of equidistant support bars slidably connected to the two sides of the storage box, a driving device arranged on the storage box and configured to drive the support bars to ascend and descend, and a through hole arranged in the inner cavity of the storage box and penetrating through the bottom of the storage box. A push plate and a pushing device are arranged on the side of the pushing opening. The display screens are stored in batches in the storage box, and the automatic feeding mechanism is formed by cooperating with the support bars and the driving device, so that the display screens do not need to be manually installed one by one, the process is simplified, the cost is reduced, the display screens are prevented from being damaged due to contact, the continuity and efficiency of the test are improved, and the batch detection requirement is met.

Description

Technical Field

[0001] This invention belongs to the field of display screen testing technology, specifically relating to a liquid crystal display screen impact resistance testing device. Background Technology

[0002] As a core display component widely used in various electronic devices, the impact resistance of LCD screens directly affects the reliability and lifespan of these devices. Impact testing is an essential quality control step in the manufacturing process of LCD screens. This test effectively identifies potential quality issues such as cracking or display abnormalities caused by collisions and impacts during transportation, installation, and daily use, ensuring that products meet relevant quality standards and usage requirements.

[0003] Currently, the industry standard for impact resistance testing of LCD screens is as follows: First, a single LCD screen is manually fixed in a designated position on the test bench. After the screen is securely fixed, a test ball with a preset weight and height is released, allowing it to fall freely and impact the designated test area of ​​the screen. The impact resistance performance is then judged based on the screen's appearance and display function after the impact.

[0004] However, the existing testing methods described above have significant drawbacks and shortcomings, especially in batch testing scenarios. Specifically, existing testing methods rely on manual installation of individual LCD screens. After testing one screen, it must be manually removed before the next screen to be tested can be reinstalled and secured on the test bench before the next round of testing can begin. This workflow results in extremely poor continuity of the testing process, requiring significant labor costs and exhibiting very low testing efficiency, failing to meet the demands of large-scale production for rapid, batch testing of LCD screens. Summary of the Invention

[0005] In view of this, the present invention provides an impact resistance testing device for liquid crystal displays to solve the problem that the testing method of the display screen in the prior art requires manual operation to fix each liquid crystal display screen. After the test of a display screen is completed, the tested display screen must be manually removed before the next display screen to be tested can be reinstalled and fixed on the test table before the next round of testing can be carried out.

[0006] The technical solution adopted in this invention is as follows: An impact resistance testing device for a liquid crystal display screen includes a worktable. A clamping device for holding the display screen is located on the top of the worktable. A launching device for launching test balls is supported above the worktable via a vertical rail. A storage box is located on one side of the worktable. A push port and a discharge port are respectively provided through the bottom two sides of the storage box. The discharge port is located on one side of the clamping device. A plurality of support bars for supporting the display screen are slidably connected to the inner two sides of the storage box. The support bars are equidistantly spaced along the height direction of the storage box. A driving device for driving the support bars to rise or fall is also provided on the storage box. The inner cavity of the storage box extends through the bottom of the storage box, allowing the support bars to move to the bottom of the storage box. A push plate and a pushing device for driving the push plate are provided on one side of the push port of the storage box.

[0007] In this technical solution, it should be noted that the workbench provides the installation and support foundation for the entire device, ensuring the stable operation of each component. The workbench is equipped with a computer and a protective cover to protect the computer. The core function of the clamping device is to firmly clamp the display screen entering the testing station, preventing the display screen from shifting during the test and affecting the test accuracy. The launching device is used to launch test balls to achieve impact resistance testing of the display screen. The storage box is used to store the display screens to be tested in batches, realizing the centralized storage of the test pieces. The support bars are used to support the display screens in the storage box in layers. Several equally spaced support bars can separate multiple display screens and prevent adjacent display screens from contacting each other and causing damage. The driving device drives the support bars to rise and fall, and cooperates with the subsequent pushing action to achieve the orderly supply of the display screens to be tested. The push plate and the pushing device work together to push the display screens to be tested on the support bars from the pushing port to the discharging port, and then push them to the clamping device. Overall working principle: In the initial state, the pusher plate is located outside the push port. Multiple displays to be tested are placed in layers inside the storage box via support bars, with the bottom layer of displays aligned with the push port and the discharge port. During testing, the pushing device drives the pusher plate to move from the push port towards the discharge port, pushing the bottom layer of displays to be tested from the discharge port to the clamping device. After the clamping device clamps and fixes the displays, the launching device adjusts its position via the vertical rail and launches test balls at the displays to complete the impact resistance test. After a single test is completed, the operator manually or through a robotic arm removes the tested displays. The driving device drives the support bars to descend a specified distance, moving the next display to be tested to the push port, ready for the next round of pushing and testing. A rotatable door is provided on one side of the storage box, through which the operator can place the displays to be tested in batches into the storage box, where they are supported in layers by the support bars. In this solution, a storage box is used to store the displays to be tested in batches. Together with support bars, drive devices, push plates, and pushing devices, an automatic feeding mechanism is formed. This eliminates the need for manual installation of each display on the test station, effectively simplifying the batch testing process and reducing labor costs. The support bars can isolate adjacent displays, preventing damage caused by contact between them and ensuring the integrity of the displays to be tested. The automatic feeding mechanism, in conjunction with the clamping device and the launching device, improves the continuity and efficiency of testing, meeting the batch testing needs of large-scale production.

[0008] Preferably, the storage box has a support leg at the bottom and a limiting groove inside the storage box. The limiting groove is T-shaped and extends vertically from inside the storage box to the bottom of the support leg. The support bar has a limiting block adapted to the shape of the limiting groove, and the limiting block is slidably embedded in the limiting groove. A bracket is provided on one side of the push port of the storage box. The driving device includes a connecting rope, a take-up roller, and a linkage device. The take-up roller is rotatably connected to the bracket. One end of the connecting rope is sequentially connected to several limiting blocks on the support bar, and the other end extends upward and passes around the fixed pulley at the top of the storage box and is wound around the take-up roller. The linkage device drives the push plate and the take-up roller. When the push plate moves from the push port to the discharge port, the take-up roller does not rotate. When the push plate moves from the discharge port away from the push port, the linkage device drives the take-up roller to rotate, thereby releasing the connecting rope wound around the take-up roller.

[0009] In this technical solution, it should be noted that the support legs are used to support the storage box, improving the stability of the storage box placement, and the support legs can reserve space for the support bar to descend; the limiting groove and limiting block work together to guide and limit the lifting and lowering movement of the support bar, preventing the support bar from deviating during movement and ensuring the smoothness of the support bar's movement; the bracket provides an installation support base for the take-up roller; the connecting rope is used to pull the support bar, and the take-up roller realizes the lifting and lowering of the support bar by winding or releasing the connecting rope; the core function of the linkage device is to realize the transmission linkage between the push plate and the take-up roller, so that the reset action of the push plate can synchronously drive the take-up roller to release the connecting rope, thereby driving the support bar to descend; the fixed pulley is used to change the force direction of the connecting rope, so that the winding or releasing action of the take-up roller can smoothly drive the support bar to rise and fall. In operation, initially, the take-up roller is wound with a connecting rope, which pulls the support bar to a specified height, and the pressure plate locks the take-up roller. When the pusher drives the push plate to move from the push port to the discharge port to push the display screen, the linkage device does not drive the take-up roller to rotate, the take-up roller remains stationary, the length of the connecting rope remains unchanged, and the support bar also remains stationary. When a single display screen is tested, the pusher resets from the discharge port away from the push port under the action of the pusher. The pusher drives the take-up roller to rotate through the linkage device, causing the connecting rope wound on the take-up roller to gradually release. Under the weight of itself and the display screen above, the support bar moves downward a specified distance along the limit groove, conveying the next display screen to be tested to the push port for the next push action. After all display screens are tested, the pusher can drive the pusher to separate the rack and gear, and then the take-up roller can be manually rotated to rewind the connecting rope, pulling the support bar upward to reset. Afterward, the storage box can be used to replenish the display screens to be tested. In this solution, the T-shaped limiting groove and limiting block work together to significantly improve the stability and accuracy of the support bar's lifting movement, ensuring that the display screen under test can be accurately moved to the push port position. The linkage device realizes the synchronous linkage between the push plate reset action and the support bar's descent action, eliminating the need for an additional independent drive mechanism to control the support bar's descent. The fixed pulley makes the transmission of the connecting rope smoother, reduces friction during transmission, and improves the transmission efficiency and service life of the drive device.

[0010] Preferably, the linkage device includes a gear, a rack, and a one-way bearing. The gear is sleeved on the take-up roller through the one-way bearing. The rack is installed at the bottom of the push plate and extends in a direction away from the discharge port. The rack and the gear can mesh with each other.

[0011] In this technical solution, it should be noted that the gear and rack work together to form a gear and rack transmission mechanism, realizing the conversion between the linear motion of the push plate and the rotational motion of the take-up roller. The core function of the one-way bearing is to realize the unidirectional rotational transmission of the take-up roller, allowing the gear to drive the take-up roller to rotate only in one direction. In the other direction, the gear and the take-up roller slide relative to each other and cannot drive the take-up roller to rotate. When the push plate moves from the push port to the discharge port to push the display screen, the push plate drives the rack at the bottom to move synchronously. At this time, the rack and gear mesh, and the gear is driven to rotate by the rack. However, due to the function of the one-way bearing, the rotation of the gear cannot be transmitted to the take-up roller, and the take-up roller remains stationary, and the support bar also remains stationary. When the push plate returns to its original position from the discharge port away from the push port, the push plate drives the rack to move in the opposite direction, and the rack and gear mesh again. At this time, the one-way bearing allows the rotation of the gear to be transmitted to the take-up roller, and the gear drives the take-up roller to rotate, thereby releasing the connecting rope and causing the support bar to descend. In this solution, the transmission control between the push plate and the take-up roller is precisely realized through the cooperation of one-way bearings, gears and racks. This ensures that the take-up roller does not move when the push plate pushes the display screen, and only moves to release the connecting rope when the push plate resets, thus ensuring the orderly connection of feeding and replenishing actions.

[0012] Preferably, a support plate is provided below the discharge port of the storage box, the support plate is located below the take-up roller, the top of the support plate is provided with a guide shaft, and the top of the guide shaft extends above the take-up roller; a locking device for locking the take-up roller is provided on the guide shaft, the locking device includes a pressure plate and a first spring, the pressure plate is sleeved on the guide shaft, the bottom of the pressure plate is provided with an arc-shaped surface adapted to the shape of the take-up roller, the first spring is sleeved on the guide shaft, one end of the first spring is connected to the pressure plate, and the other end is connected to the support plate; an unlocking device is provided on the rack, the unlocking device can prevent the pressure plate from rising when the rack moves towards the discharge port, and the unlocking device can drive the pressure plate to rise when the rack moves away from the push port.

[0013] In this technical solution, it should be noted that the support plate provides the mounting support foundation for the guide shaft and locking device; the guide shaft guides the lifting and lowering movement of the pressure plate, preventing the pressure plate from shifting; the core function of the locking device is to lock the take-up roller under normal conditions, preventing accidental rotation of the take-up roller from causing the connecting rope to release or the support bar to fall, thus ensuring the safe operation of the device. The pressure plate fits against the take-up roller through its arc-shaped surface, improving the stability of the locking, and the bottom of the pressure plate has several anti-slip protrusions that can cooperate with the anti-slip recesses on the take-up roller to improve the engagement stability; the first spring provides downward elastic pressure to the pressure plate, ensuring that the pressure plate can fit tightly against the take-up roller to achieve reliable locking; the unlocking device is used to drive the pressure plate to rise when the push plate is reset, releasing the locking of the take-up roller, allowing the take-up roller to rotate smoothly and release the connecting rope. Initially, the first spring is compressed, pushing the pressure plate downward along the guide axis. The pressure plate tightly contacts the take-up roller through its arc-shaped surface, locking the take-up roller in place, preventing it from rotating. When the push plate moves towards the discharge port and pushes the display screen, the rack moves synchronously, and the unlocking device does not interact with the pressure plate, keeping the pressure plate locked and preventing the take-up roller from rotating. When the push plate resets away from the discharge port, the rack drives the unlocking device to move synchronously, contacting the pressure plate and causing it to move upward along the guide axis. The first spring is pulled up, separating the pressure plate from the take-up roller and releasing the lock. At this time, the linkage device drives the take-up roller to rotate, releasing the connecting rope, and the support bar descends. After the push plate resets, the unlocking device separates from the pressure plate, the first spring recovers its elastic deformation, and pushes the pressure plate downward to relock the take-up roller. In this design, the locking device effectively prevents the winding roller from rotating accidentally, preventing the support bar and display screen from falling and improving the operational safety of the device. The unlocking device is linked with the push plate and rack to achieve automatic control of the locking and unlocking actions without manual operation. The linkage device ensures the smooth descent of the support bar. The guiding function of the guide shaft and the arc-shaped surface design of the pressure plate improve the stability of the locking and unlocking actions, and the elastic pressure of the first spring ensures the reliability of the locking.

[0014] Preferably, the pressure plate has a plate body on the side facing the rack, and the end of the plate body near the push port has a first guide surface, which is inclined from top to bottom in the direction away from the push port; the unlocking device includes a mounting plate, a push block, and a second spring, the mounting plate is mounted on the end of the rack away from the push port, the end of the mounting plate facing the pressure plate has a mounting groove, the push block is disposed in the mounting groove, one end of the push block is connected to the mounting groove through the second spring, the other end extends outside the mounting groove, and one end of the push block has a second guide surface, which is inclined and faces the end of the plate body.

[0015] In this technical solution, it should be noted that the plate body is used to cooperate with the push block of the unlocking device to transmit the unlocking driving force; the core function of the second guide surface is to contact the plate body and generate a guiding effect when the push plate pushes the display screen (push material), so that the push block is squeezed and compressed into the mounting groove, avoiding motion interference between the push block and the plate body; the core function of the first guide surface is to cooperate with the push block when the push plate is reset, providing guidance for the push block to push the plate body, so that the push block can smoothly drive the pressure plate upward to achieve the unlocking of the winding roller; the mounting plate provides a mounting base for the push block and the second spring; the push block, as the actuating component of the unlocking device, can retract to avoid interference when pushing material, and can push the plate body and thus drive the pressure plate to rise when resetting; the second spring provides elastic reset force for the push block, ensuring that the push block can extend out of the mounting groove in time after avoiding interference, ensuring reliable cooperation with the first guide surface to achieve unlocking. When the pusher plate moves towards the discharge port and pushes the display screen, the rack drives the mounting plate and the pusher block to move synchronously. The second guide surface of the pusher block contacts the plate body. Under the guidance of the second guide surface, the pusher block is squeezed into the mounting groove by the plate body, and the second spring is compressed, thereby avoiding motion interference between the pusher block and the plate body. At this time, the pressure plate remains locked. When the pusher plate returns to its original position away from the discharge port, the rack drives the mounting plate and the pusher block to move in the opposite direction. The pusher block contacts and engages with the first guide surface on the plate body. Under the guidance of the first guide surface, the pusher block pushes the plate body upward. The plate body drives the pressure plate to rise along the guide shaft, releasing the lock on the take-up roller. When the pusher plate returns to the designated position, the pusher block separates from the plate body, the second spring recovers its elastic deformation, pushes the pusher block to extend out of the mounting groove and return to its original position, and at the same time, the first spring pushes the pressure plate down to relock the take-up roller. In this solution, the setting of the second guide surface enables the push block to smoothly avoid interference when the push plate pushes the display screen, effectively preventing motion interference and ensuring the smooth progress of the feeding action; the cooperation between the first guide surface and the push block ensures that the push plate can smoothly drive the pressure plate to rise and unlock when it resets; the setting of the second spring ensures that the push block can reset in time, ensuring the reliable realization of the subsequent unlocking action.

[0016] Preferably, the clamping device includes two positioning plates spaced apart above the worktable. Each positioning plate has a slot at one end facing the other. A first cylinder is located on the top of each positioning plate, and the piston rod of the first cylinder extends into the slot and connects to a clamping plate. A mounting frame is rotatably connected to the outer side of each positioning plate. A first motor connected to the positioning plate is mounted on the mounting frame, and the first motor drives the positioning plate to rotate in a vertical plane. A second motor connected to the mounting frame is located below the worktable, and the second motor drives the mounting frame to rotate in a horizontal plane.

[0017] In this technical solution, it should be noted that the positioning plate is used to position the display screen, and the slot can initially limit the edge of the display screen to prevent lateral displacement. The first cylinder provides clamping driving force for the clamping plate, which is used to firmly clamp the display screen in the slot, ensuring the stability of the display screen during testing. The mounting frame provides a mounting support base for the positioning plate and the first motor. The first motor is used to drive the positioning plate to rotate in the vertical plane, thereby causing the display screen to flip, enabling impact resistance testing of the display screen at different angles. The second motor is used to drive the mounting frame to rotate in the horizontal plane, thereby causing the display screen to rotate horizontally, enabling impact resistance testing of different areas of the display screen. After the pusher plate pushes the display screen to be tested from the discharge port into the slots between the two positioning plates, the first cylinders on the two positioning plates activate simultaneously. The piston rods push the clamping plates towards the display screen until the clamping plates firmly hold the display screen in the slots. If different angles of the display screen need to be tested, the first motor is activated, which drives the positioning plates to rotate in the vertical plane. The positioning plates then drive the display screen to rotate synchronously to the specified angle and stop. If different areas of the display screen need to be tested, the second motor is activated, which drives the mounting bracket to rotate in the horizontal plane. The mounting bracket then drives the positioning plates and the display screen to rotate synchronously to the specified position and stop. After the display screen is adjusted into position, the launching device launches a test ball for impact resistance testing. After the test, the positioning plates reset, ready for the next test. In this solution, the slots and clamping plates work together to firmly hold the display screen, preventing displacement during testing and ensuring the accuracy of the test results. The first and second motors enable the display screen to rotate in the vertical plane and in the horizontal plane, allowing for impact resistance testing of different angles and areas of the display screen. This improves the comprehensiveness and flexibility of the test, eliminates the need for manual adjustment of the display screen position, and further enhances testing efficiency.

[0018] Preferably, the workbench is provided with a first guide rail, which is arranged along the length direction of the workbench. A first electric slide rail is slidably connected to the first guide rail. A vertical rail is arranged on the first electric slide rail. A second electric slide rail is slidably connected to the vertical rail. A third guide rail is arranged on the second electric slide rail. The third guide rail is arranged along the width direction of the workbench. A third electric slide rail is slidably connected to the third guide rail. The launching device is mounted on the third electric slide rail.

[0019] In this technical solution, it should be noted that the first guide rail provides a sliding guide for the first electric slide rail, which can drive the vertical rail and subsequent components to move along the length of the worktable; the vertical rail provides a sliding guide for the second electric slide rail, which can drive the third guide rail and subsequent components to move vertically; the third guide rail provides a sliding guide for the third electric slide rail, which can drive the launching device to move along the width of the worktable; through the cooperation of the first, second, and third electric slide rails, the launching device can be moved and adjusted in three-dimensional space. The three-dimensional movement adjustment structure allows the launching device to flexibly adjust its position in three-dimensional space, enabling precise alignment with any test area of ​​the display screen, thus improving the accuracy and flexibility of the test.

[0020] Preferably, the launching device includes a housing, within which a turntable is rotatably connected. A plurality of storage slots are perforated on the sidewall of the turntable, and these storage slots are equidistantly spaced along the circumference of the turntable. A storage cylinder for holding test balls is located at the top of the housing; the storage cylinder is vertically positioned and communicates with the interior of the housing. A discharge cylinder, communicating with the bottom of the housing, is located at the bottom of the housing. The turntable is driven to rotate by a third motor mounted on the housing.

[0021] In this technical solution, it should be noted that the outer shell provides a foundation for the installation and protection of components such as the turntable and the storage tank; the turntable is used to carry and transport test balls, and the storage tank can limit the test balls to prevent them from falling off during the rotation of the turntable; the storage cylinder is used to store test balls in batches to achieve a continuous supply of test balls; the discharge cylinder is used to guide the launch direction of the test balls so that the test balls can accurately face the test area of ​​the display screen; the third motor provides driving force for the rotation of the turntable, driving the turntable to rotate at a uniform speed. Before testing, a batch of test balls are placed in the storage cylinder. Under the influence of gravity, the test balls fall into the outer casing and enter the storage trough on the turntable. During testing, the third motor is started, which drives the turntable to rotate. When the storage trough containing the test balls rotates to the position aligned with the discharge cylinder, the test balls in the storage trough fall into the discharge cylinder under the influence of gravity and are launched into the designated test area on the display screen. The turntable continues to rotate, and subsequent test balls in the storage troughs rotate to the position of the discharge cylinder in sequence to complete the launch, realizing the continuous launch of a batch of test balls.

[0022] Preferably, a fourth motor is provided on the side wall of the discharge cylinder, and a rotating plate is fixedly connected to the output end of the fourth motor. An infrared emitter is provided at the bottom of the rotating plate, and the infrared emitter is located at the bottom center of the discharge cylinder.

[0023] In this technical solution, it should be noted that the fourth motor provides the driving force for the rotation of the rotating plate, which controls the opening and closing of the discharge cylinder, thereby controlling the timing of the test ball launch. The infrared emitter emits infrared rays to accurately position the test area of ​​the display screen, providing precise guidance for the launch of the test ball. Before testing, the infrared emitter emits infrared rays to align with the designated test area of ​​the display screen, completing the precise positioning of the test position. During testing, after the emitting device is adjusted into place and the display screen is clamped and fixed, the fourth motor is started. The fourth motor drives the rotating plate to rotate, so that the rotating plate no longer blocks the discharge cylinder. At this time, the test ball in the storage tank can be launched through the discharge cylinder to the test area positioned by the infrared rays. After a single test is completed, the fourth motor drives the rotating plate to rotate in the opposite direction, blocking the discharge cylinder again to prevent subsequent test balls from falling, waiting for the next test command. If continuous testing is required, the fourth motor can be controlled to keep the rotating plate in a position that does not block the discharge cylinder, allowing the test balls to be launched continuously. In this solution, the infrared transmitter significantly improves the accuracy of the test ball's launch position, ensuring the reliability of the test results. The rotating plate, in conjunction with the fourth motor, enables automatic control of the discharge cylinder's on / off state, allowing precise control of the test ball's launch timing. This is suitable for both single and continuous testing, enhancing the device's applicability and the test's controllability.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, a storage box is used to store the displays to be tested in batches. Combined with support bars, a drive device, a pusher plate, and a pushing device, an automatic feeding mechanism is formed. This eliminates the need for manual installation of each display at the testing station, effectively simplifying the batch testing process and reducing labor costs. The support bars isolate adjacent displays, preventing damage from contact and ensuring the integrity of the displays under test. The automatic feeding mechanism, in conjunction with the clamping device and the launching device, improves the continuity and efficiency of testing, meeting the batch testing needs of large-scale production. 2. In this invention, the transmission control between the push plate and the take-up roller is precisely realized through the cooperation of one-way bearings, gears and racks, ensuring that the take-up roller does not move when the push plate pushes the display screen, and only moves to release the connecting rope when the push plate resets, thus ensuring the orderly connection of feeding and replenishing actions. 3. In this invention, the setting of the second guide surface enables the push block to smoothly avoid interference when the push plate pushes the display screen, effectively preventing motion interference and ensuring the smooth progress of the feeding action; the cooperation between the first guide surface and the push block ensures that the push plate can smoothly drive the pressure plate to rise and unlock when it resets; the setting of the second spring ensures that the push block can reset in time, ensuring the reliable realization of the subsequent unlocking action. Attached Figure Description

[0025] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 A three-dimensional structural diagram of the structure without the computer and protective shield; Figure 3 This is a three-dimensional structural diagram of the storage box and the pushing device of the present invention; Figure 4 This is a cross-sectional perspective view of the storage box and push plate of the present invention. Figure 5 for Figure 4 A schematic diagram of a squinting three-dimensional structure; Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure after cutting; Figure 7 for Figure 6 A schematic diagram of a squinting three-dimensional structure; Figure 8 This is a three-dimensional structural diagram of the rack, take-up roller, and pressure plate of the present invention; Figure 9 This is a three-dimensional structural diagram of the pressure plate and rack of the present invention; Figure 10 This is a three-dimensional structural diagram of the rack of the present invention; Figure 11 This is a three-dimensional structural diagram of the rack mounting plate of the present invention after cross-section; Figure 12 This is a frontal perspective three-dimensional structural diagram of the pressure plate and push block of the present invention; Figure 13 for Figure 12 A top-down three-dimensional structural diagram; Figure 14 This is a three-dimensional structural diagram of the pusher block of the present invention when it moves to the right side of the pressure plate and is ready to move to the left. Figure 15 This is a three-dimensional structural diagram of the worktable of the present invention; Figure 16 This is a three-dimensional structural diagram of the clamping device of the present invention; Figure 17 This is a three-dimensional structural diagram of the launching device of the present invention; Figure 18 This is a cross-sectional perspective view of the launching device of the present invention; Wherein: 100-Workbench, 101-Protective Cover, 102-Computer, 200-Clamping Device, 201-Positioning Plate, 202-Card Slot, 203-First Cylinder, 204-Clamping Plate, 205-Mounting Bracket, 206-Second Motor, 207-First Motor, 300-Transmitting Device, 301-Outer Shell, 302-Storage Cylinder, 303-Discharge Cylinder, 304-Third Motor, 305-Fourth Motor, 306-Turnplate, 307-Infrared Emitter, 308-Turntable, 309-Storage Tank, 400-Storage Box, 401-Limiting Slot, 402-Support Bar, 403-Display Screen, 404-Pushing Port, 405-Discharge Port, 500-Push Moving device, 501-push plate, 502-rack, 5021-push block, 5022-mounting plate, 5023-mounting groove, 5024-second spring, 5025-second guide surface, 600-connecting rope, 601-fixed pulley, 700-bracket, 701-winding roller, 702-gear, 703-one-way bearing, 800-support plate, 801-guide shaft, 802-first spring, 803-pressure plate, 8031-plate body, 8032-first guide surface, 8033-arc surface, 900-vertical rail, 901-first guide rail, 902-first electric slide rail, 903-second electric slide rail, 904-third guide rail, 905-third electric slide rail. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. Example 1

[0032] like Figures 1-18As shown in the figure, an impact resistance testing device for a liquid crystal display screen 403 is disclosed in this embodiment of the invention, including a workbench 100. A clamping device 200 for holding the display screen 403 is provided on the top of the workbench 100. A launching device 300 for launching test balls is also supported above the workbench 100 via a vertical rail 900. A storage box 400 is provided on one side of the workbench 100. A push port 404 and a discharge port 405 are respectively provided through the bottom two sides of the storage box 400. The discharge port 405 is located on one side of the clamping device 200. Several support bars 402 for supporting the display screen 403 are slidably connected to the inner sides of the storage box 400. The support bars 402 are equidistantly spaced along the height direction of the storage box 400. The storage box 400 is also provided with a driving device for driving the support bars 402 to rise or fall. The inner cavity of the storage box 400 extends through the bottom of the storage box 400, so that the support bars 402 can move to the bottom of the storage box 400. A push plate 501 and a pushing device 500 for driving the push plate 501 to move are provided on one side of the push port 404 of the storage box 400. It should be noted that the workbench 100 provides the installation and support foundation for the entire device, ensuring the stable operation of all components. The workbench 100 is equipped with a computer 102 and a protective cover 101 to protect the computer 102. The core function of the clamping device 200 is to firmly clamp the display screen 403 entering the testing station, preventing displacement of the display screen 403 during testing and thus avoiding impact on testing accuracy. The launching device 300 is used to launch test balls to achieve impact resistance testing of the display screen 403. The storage box 400 is used for batch storage of the display screens 403 to be tested, realizing the testing of the test pieces. The centralized storage; the support bar 402 is used to support the display screen 403 in the storage box 400 in layers. Several equidistant support bars 402 can separate and place multiple display screens 403 to avoid damage caused by contact between adjacent display screens 403; the function of the drive device is to drive the support bar 402 to rise and fall, and cooperate with the subsequent pushing action to realize the orderly supply of the display screen 403 to be tested; the push plate 501 and the pushing device 500 cooperate to push the display screen 403 to be tested on the support bar 402 from the pushing port 404 to the discharge port 405, and then push it to the clamping device 200.Overall working principle: In the initial state, the pusher plate 501 is located outside the push port 404. Multiple display screens 403 to be tested are layered inside the storage box 400 via support bars 402, with the bottom layer of display screens 403 aligned with the push port 404 and the discharge port 405. During testing, the pushing device 500 drives the pusher plate 501 to move from the push port 404 towards the discharge port 405, pushing the bottom layer of display screens 403 to be tested from the discharge port 405 to the clamping device 200. After the clamping device 200 clamps and fixes the display screens 403, the launching device 300... The position is adjusted by the vertical rail 900, and a test ball is launched onto the display screen 403 to complete the impact test. After a single test is completed, the staff can manually or by means of a robotic arm remove the tested display screen 403. The drive device drives the support bar 402 to descend a specified distance, so that the next display screen 403 to be tested moves to the push port 404 to wait for the next round of pushing and testing. A rotating door is provided on one side of the storage box 400. The staff can use the door to put the display screens 403 to be tested into the storage box 400 in batches, which are supported in layers by the support bar 402. In this solution, a storage box 400 is used to store the display screens 403 to be tested in batches. Together with the support bar 402, drive device, push plate 501 and push device 500, an automatic feeding mechanism is formed. There is no need for manual installation of each display screen 403 to the test station, which effectively simplifies the batch testing operation process and reduces labor costs. The support bar 402 can isolate two adjacent display screens 403 to avoid damage caused by contact between the display screens 403 and ensure the integrity of the display screens 403 to be tested. The automatic feeding mechanism, together with the clamping device 200 and the launching device 300, improves the continuity and efficiency of testing and meets the batch testing needs of large-scale production.

[0033] like Figures 4-8As shown, in this embodiment, the storage box 400 has a support leg at its bottom, and a limiting groove 401 is provided inside the storage box 400. The limiting groove 401 has a T-shaped structure and extends vertically from inside the storage box 400 to the bottom of the support leg. The support bar 402 has a limiting block that matches the shape of the limiting groove 401, and the limiting block is slidably embedded in the limiting groove 401. A bracket 700 is provided on one side of the push port 404 of the storage box 400. The driving device includes a connecting rope 600, a winding roller 701, and a linkage device. The winding roller 701 is rotatably connected to the bracket 700. On the storage box 400, one end of the connecting rope 600 is sequentially connected to the limiting blocks on several support bars 402, and the other end extends upward and passes around the fixed pulley 601 at the top of the storage box 400 and is wound around the take-up roller 701. The linkage device drives the push plate 501 and the take-up roller 701. When the push plate 501 moves from the push port 404 to the discharge port 405, the take-up roller 701 does not rotate. When the push plate 501 moves from the discharge port 405 away from the push port 404, the linkage device drives the take-up roller 701 to rotate, so that the connecting rope 600 wound around the take-up roller 701 is released. It should be noted that the support legs are used to support the storage box 400, improving the stability of the storage box 400, and the support legs can reserve space for the support bar 402 to descend; the limiting groove 401 and the limiting block cooperate to guide and limit the lifting and lowering movement of the support bar 402, preventing the support bar 402 from deviating during movement and ensuring the smoothness of the movement of the support bar 402; the bracket 700 provides an installation support base for the take-up roller 701; the connecting rope 600 is used to pull the support bar 402, and the take-up roller 701 realizes the lifting and lowering of the support bar 402 by winding or releasing the connecting rope 600; the core function of the linkage device is to realize the transmission linkage between the push plate 501 and the take-up roller 701, so that the reset action of the push plate 501 can synchronously drive the take-up roller 701 to release the connecting rope 600, thereby driving the support bar 402 to descend; the fixed pulley 601 is used to change the force direction of the connecting rope 600, so that the winding or releasing action of the take-up roller 701 can smoothly drive the support bar 402 to rise and fall.In use, initially, the winding roller 701 is wound with a connecting rope 600, which pulls the support bar 402 to maintain a specified height, and the pressure plate 803 locks the winding roller 701. When the pushing device 500 drives the push plate 501 to move from the push port 404 to the discharge port 405 to push the display screen 403, the linkage device does not drive the winding roller 701 to rotate, the winding roller 701 remains stationary, the length of the connecting rope 600 remains unchanged, and the support bar 402 also remains stationary. When the test of a single display screen 403 is completed, and the push plate 501 is reset from the discharge port 405 away from the push port 404 under the action of the pushing device 500, the push plate 501 is reset by the linkage device. The device drives the take-up roller 701 to rotate, causing the connecting rope 600 wound on the take-up roller 701 to gradually release. Under the gravity of itself and the display screen 403 above, the support bar 402 moves downward a specified distance along the limiting groove 401, conveying the next display screen 403 to be tested to the push port 404 for the next push action. After all the display screens 403 have been tested, the pusher 500 can drive the push plate 501 to separate the rack 502 from the gear 702. Then, the take-up roller 701 is manually rotated to wind up the connecting rope 600, pulling the support bar 402 to rise and reset. After that, the display screens 403 to be tested are replenished by opening and closing the storage box 400. In this solution, the T-shaped limiting groove 401, in conjunction with the limiting block, significantly improves the stability and accuracy of the lifting movement of the support bar 402, ensuring that the display screen 403 under test can accurately move to the push port 404 position. The linkage device realizes the synchronous linkage between the reset action of the push plate 501 and the descent action of the support bar 402, eliminating the need for an additional independent drive mechanism to control the descent of the support bar 402. The fixed pulley 601 makes the transmission of the connecting rope 600 smoother, reduces friction during transmission, and improves the transmission efficiency and service life of the drive device.

[0034] like Figures 6-7As shown, in this embodiment, the linkage device includes a gear 702, a rack 502, and a one-way bearing 703. The gear 702 is sleeved on the take-up roller 701 via the one-way bearing 703. The rack 502 is installed at the bottom of the push plate 501 and extends in a direction away from the discharge port 405. The rack 502 and the gear 702 can mesh with each other. It should be noted that the gear 702 and the rack 502 cooperate to form a gear 702 rack 502 transmission mechanism, realizing the conversion between the linear motion of the push plate 501 and the rotational motion of the take-up roller 701. The core function of the one-way bearing 703 is to realize the one-way rotational transmission of the take-up roller 701, allowing the gear 702 to drive the take-up roller 701 to rotate only in one direction. In the other direction, the gear 702 slides relative to the take-up roller 701 and cannot drive the take-up roller 701 to rotate. When the pusher plate 501 moves from the push port 404 to the discharge port 405 to push the display screen 403, the pusher plate 501 drives the rack 502 at the bottom to move synchronously. At this time, the rack 502 meshes with the gear 702, and the gear 702 is driven to rotate by the rack 502. However, due to the action of the one-way bearing 703, the rotation of the gear 702 cannot be transmitted to the take-up roller 701, and the take-up roller 701 remains stationary, and the support bar 402 also remains stationary. When the pusher plate 501 returns to its original position from the discharge port 405 to a direction away from the push port 404, the pusher plate 501 drives the rack 502 to move in the opposite direction, and the rack 502 meshes with the gear 702 again. At this time, the one-way bearing 703 allows the rotation of the gear 702 to be transmitted to the take-up roller 701. The gear 702 drives the take-up roller 701 to rotate, thereby releasing the connecting rope 600 and causing the support bar 402 to descend. In this solution, the transmission control between the push plate 501 and the take-up roller 701 under different movement directions is precisely realized through the cooperation of the one-way bearing 703, gear 702 and rack 502. This ensures that the take-up roller 701 does not move when the push plate 501 pushes the display screen 403, and only moves to release the connecting rope 600 when the push plate 501 resets. This ensures the orderly connection of feeding and replenishing actions.

[0035] like Figures 6-14As shown, in this embodiment, a support plate 800 is provided below the discharge port 405 of the storage box 400. The support plate 800 is located below the take-up roller 701. A guide shaft 801 is provided on the top of the support plate 800, and the top of the guide shaft 801 extends above the take-up roller 701. A locking device for locking the take-up roller 701 is provided on the guide shaft 801. The locking device includes a pressure plate 803 and a first spring 802. The pressure plate 803 is sleeved on the guide shaft 801. The bottom of 03 is provided with an arc-shaped surface 8033 that matches the shape of the take-up roller 701. The first spring 802 is sleeved on the guide shaft 801. One end of the first spring 802 is connected to the pressure plate 803, and the other end is connected to the support plate 800. The rack 502 is provided with an unlocking device. When the rack 502 moves towards the discharge port 405, the unlocking device can prevent the pressure plate 803 from rising. When the rack 502 moves away from the push port 404, the unlocking device can drive the pressure plate 803 to rise. It should be noted that the support plate 800 provides the mounting support foundation for the guide shaft 801 and the locking device; the guide shaft 801 guides the lifting and lowering movement of the pressure plate 803, preventing the pressure plate 803 from shifting; the core function of the locking device is to lock the take-up roller 701 under normal conditions, preventing accidental rotation of the take-up roller 701 from causing the connecting rope 600 to release and the support bar 402 to fall, thus ensuring the safe operation of the device. The pressure plate 803 fits against the take-up roller 701 through the arc-shaped surface 8033, enhancing the locking effect. The stability is enhanced, and the bottom of the pressure plate 803 is provided with several anti-slip protrusions, which can cooperate with the anti-slip recesses on the take-up roller 701 to improve the engagement stability; the first spring 802 provides downward elastic pressure to the pressure plate 803 to ensure that the pressure plate 803 can fit tightly against the take-up roller 701 to achieve reliable locking; the unlocking device is used to drive the pressure plate 803 to rise when the push plate 501 is reset, release the locking of the take-up roller 701, and allow the take-up roller 701 to rotate smoothly to release the connecting rope 600.In the initial state, the first spring 802 is compressed, pushing the pressure plate 803 downward along the guide shaft 801. The pressure plate 803 tightly adheres to the take-up roller 701 through the arc surface 8033, locking the take-up roller 701. At this time, the take-up roller 701 cannot rotate. When the push plate 501 moves towards the discharge port 405 and pushes the display screen 403, the rack 502 moves synchronously. The unlocking device does not interact with the pressure plate 803, and the pressure plate 803 remains locked, preventing the take-up roller 701 from rotating. When the push plate 501 moves away from the discharge port 404... During reset, the rack 502 drives the unlocking device to move synchronously. The unlocking device contacts the pressure plate 803 and drives the pressure plate 803 to move upward along the guide shaft 801. The first spring 802 is pulled up, and the pressure plate 803 separates from the take-up roller 701, releasing the lock on the take-up roller 701. At this time, the linkage device drives the take-up roller 701 to rotate and release the connecting rope 600, and the support bar 402 descends. After the push plate 501 is reset, the unlocking device separates from the pressure plate 803, the first spring 802 restores its elastic deformation, and pushes the pressure plate 803 downward to relock the take-up roller 701. In this design, the locking device effectively prevents the winding roller 701 from rotating unexpectedly, preventing the support bar 402 and the display screen 403 from falling, thus improving the operational safety of the device. The unlocking device is linked with the push plate 501 and the rack 502 to achieve automatic control of the locking and unlocking actions without manual operation. The linkage device ensures the smooth descent of the support bar 402. The guiding function of the guide shaft 801 and the arc-shaped surface 8033 design of the pressure plate 803 improve the stability of the locking and unlocking actions, and the elastic pressure of the first spring 802 ensures the reliability of the locking.

[0036] like Figures 8-14As shown, in this embodiment, the pressure plate 803 has a plate body 8031 ​​on the side facing the rack 502. The end of the plate body 8031 ​​near the push port 404 has a first guide surface 8032, which is inclined from top to bottom in the direction away from the push port 404. The unlocking device includes a mounting plate 5022, a push block 5021, and a second spring 5024. The mounting plate 5022 is installed on the end of the rack 502 away from the push port 404. The end of the mounting plate 5022 facing the pressure plate 803 has a mounting groove 5023. The push block 5021 is disposed in the mounting groove 5023. One end of the push block 5021 is connected to the mounting groove 5023 through the second spring 5024, and the other end extends outside the mounting groove 5023. The push block 5021 has a second guide surface 5025 on one end, which is inclined and faces the end of the plate body 8031. It should be noted that the plate 8031 ​​is used to cooperate with the push block 5021 of the unlocking device to transmit the unlocking driving force; the core function of the second guide surface 5025 is to contact the plate 8031 ​​and generate a guiding effect when the push plate 501 pushes the display screen 403 (pushing material), so that the push block 5021 is squeezed and compressed into the mounting groove 5023, avoiding motion interference between the push block 5021 and the plate 8031; the core function of the first guide surface 8032 is to cooperate with the push block 5021 when the push plate 501 is reset, providing guidance for the push block 5021 to push the plate 8031, so that the push block 5021 pushes the plate 8031. Block 5021 can smoothly drive the pressure plate 803 upward to unlock the winding roller 701; mounting plate 5022 provides a mounting base for push block 5021 and second spring 5024; push block 5021, as the actuating component of the unlocking device, can retract to avoid interference when pushing material, and can push plate 8031 ​​to drive pressure plate 803 upward when resetting; second spring 5024 provides elastic reset force for push block 5021, ensuring that push block 5021 can extend out of mounting groove 5023 in time after avoiding interference, ensuring reliable cooperation with first guide surface 8032 to achieve unlocking.When the pusher plate 501 moves towards the discharge port 405 to push the display screen 403, the rack 502 drives the mounting plate 5022 and the pusher block 5021 to move synchronously. The second guide surface 5025 of the pusher block 5021 contacts the plate body 8031. Under the guidance of the second guide surface 5025, the pusher block 5021 is squeezed into the mounting groove 5023 by the plate body 8031, and the second spring 5024 is compressed, thereby avoiding motion interference between the pusher block 5021 and the plate body 8031. At this time, the pressure plate 803 remains locked. When the pusher plate 501 returns to its original position away from the discharge port 404, the rack 502 drives the mounting plate 5022 to move synchronously. 5022 and push block 5021 move in opposite directions. Push block 5021 contacts and engages with the first guide surface 8032 on plate 8031. Under the guidance of the first guide surface 8032, push block 5021 pushes plate 8031 ​​upward. Plate 8031 ​​drives pressure plate 803 to rise along guide shaft 801, releasing the locking of take-up roller 701. When push plate 501 returns to the designated position, push block 5021 separates from plate 8031. Second spring 5024 restores its elastic deformation, pushing push block 5021 to extend out of mounting groove 5023 and return to its original position. At the same time, first spring 802 pushes pressure plate 803 downward to relock take-up roller 701. In this solution, the second guide surface 5025 enables the pusher block 5021 to smoothly avoid interference when the pusher plate 501 pushes the display screen 403, effectively preventing motion interference and ensuring the smooth progress of the feeding action; the cooperation between the first guide surface 8032 and the pusher block 5021 ensures that the pusher plate 501 can smoothly drive the pressure plate 803 to rise and unlock when it resets; the second spring 5024 ensures that the pusher block 5021 can reset in time, ensuring the reliable realization of the subsequent unlocking action. Example 2

[0037] like Figure 15As shown, this embodiment is largely the same as the above embodiment, except that the clamping device 200 includes two positioning plates 201 spaced apart above the worktable 100. The two positioning plates 201 have slots 202 at their opposite ends. A first cylinder 203 is located on the top of each positioning plate 201, and the piston rod of the first cylinder 203 extends into the slot 202 and connects to a clamping plate 204. A mounting frame 205 is rotatably connected to the outer side of each positioning plate 201. A first motor 207 connected to the positioning plate 201 is mounted on the mounting frame 205, and the first motor 207 drives the positioning plate 201 to rotate in a vertical plane. A second motor 206 connected to the mounting frame 205 is located below the worktable 100, and the second motor 206 drives the mounting frame 205 to rotate in a horizontal plane. It should be noted that the positioning plate 201 is used to position the display screen 403, and the slot 202 can initially limit the edge of the display screen 403 to prevent the display screen 403 from shifting laterally; the first cylinder 203 provides clamping driving force to the clamping plate 204, which is used to firmly clamp the display screen 403 in the slot 202 to ensure the stability of the display screen 403 during the test; the mounting bracket 205 provides a mounting support base for the positioning plate 201 and the first motor 207; the first motor 207 is used to drive the positioning plate 201 to rotate in the vertical plane, thereby driving the display screen 403 to flip, which can realize the impact resistance test of the display screen 403 at different angles; the second motor 206 is used to drive the mounting bracket 205 to rotate in the horizontal plane, thereby driving the display screen 403 to rotate horizontally, which can realize the impact resistance test of different areas of the display screen 403. When the pusher plate 501 pushes the display screen 403 to be tested from the discharge port 405 into the slots 202 of the two positioning plates 201, the first cylinders 203 on the two positioning plates 201 act simultaneously, and the piston rod pushes the clamping plate 204 to move towards the display screen 403 until the clamping plate 204 firmly clamps the display screen 403 in the slots 202. If it is necessary to test different angles of the display screen 403, the first motor 207 is started. The first motor 207 drives the positioning plate 201 to rotate in the vertical plane. The positioning plate 201 drives the display screen 403 to rotate synchronously to the specified angle and then stops. If it is necessary to test different areas of the display screen 403, the second motor 206 is started. The second motor 206 drives the mounting bracket 205 to rotate in the horizontal plane. The mounting bracket 205 drives the positioning plate 201 and the display screen 403 to rotate synchronously to the specified position and then stops. After the display screen 403 is adjusted into place, the launching device 300 launches a test ball to perform an impact test. After the test is completed, the positioning plate 201 is reset and ready for the next test.In this solution, the slot 202 and the clamping plate 204 work together to firmly clamp the display screen 403, preventing the display screen 403 from shifting during the test and ensuring the accuracy of the test results. The first motor 207 and the second motor 206 enable the display screen 403 to achieve vertical plane flipping and horizontal plane rotation, allowing for impact resistance testing of the display screen 403 at different angles and in different areas. This improves the comprehensiveness and flexibility of the test, eliminates the need for manual adjustment of the position of the display screen 403, and further enhances the testing efficiency. Example 3

[0038] like Figure 14 As shown, this embodiment is largely the same as the above embodiment, except that the worktable 100 is provided with a first guide rail 901, which is arranged along the length direction of the worktable 100. The first guide rail 901 is provided with a first electric slide rail 902 slidably connected to it. The vertical rail 900 is provided on the first electric slide rail 902. The vertical rail 900 is provided with a second electric slide rail 903 slidably connected to it. The second electric slide rail 903 is provided with a third guide rail 904, which is arranged along the width direction of the worktable 100. The third guide rail 904 is provided with a third electric slide rail 905 slidably connected to it. The launching device 300 is mounted on the third electric slide rail 905. It should be noted that the first guide rail 901 provides a sliding guide for the first electric slide rail 902, which can drive the vertical rail 900 and subsequent components to move along the length of the worktable 100; the vertical rail 900 provides a sliding guide for the second electric slide rail 903, which can drive the third guide rail 904 and subsequent components to move vertically; the third guide rail 904 provides a sliding guide for the third electric slide rail 905, which can drive the launching device 300 to move along the width of the worktable 100. Through the cooperation of the first electric slide rail 902, the second electric slide rail 903, and the third electric slide rail 905, the launching device 300 can be moved and adjusted in three-dimensional space. The three-dimensional movement adjustment structure allows the launching device 300 to flexibly adjust its position in three-dimensional space, enabling precise alignment with any test area of ​​the display screen 403, thus improving the accuracy and flexibility of the test. Example 4

[0039] like Figures 17-18As shown, this embodiment is largely the same as the above embodiment, except that the launching device 300 includes a housing 301, a turntable 308 rotatably connected inside the housing 301, and a plurality of storage slots 309 extending through the side wall of the turntable 308. The storage slots 309 are equidistantly spaced along the circumference of the turntable 308. A storage cylinder 302 for holding test balls is provided at the top of the housing 301. The storage cylinder 302 is vertically arranged and communicates with the interior of the housing 301. A discharge cylinder 303 communicates with the bottom of the housing 301. The turntable 308 is driven to rotate by a third motor 304 mounted on the housing. It should be noted that the outer casing 301 provides a foundation for the installation and protection of components such as the turntable 308 and the storage tank 309; the turntable 308 is used to carry and transport test balls, and the storage tank 309 can limit the test balls to prevent them from falling off during the rotation of the turntable 308; the storage cylinder 302 is used to store test balls in batches to achieve a continuous supply of test balls; the discharge cylinder 303 is used to guide the launch direction of the test balls so that the test balls can accurately face the test area of ​​the display screen 403; the third motor 304 provides driving force for the rotation of the turntable 308, driving the turntable 308 to rotate at a uniform speed. Before testing, a batch of test balls are placed in the storage cylinder 302. Under the influence of gravity, the test balls in the storage cylinder 302 fall into the outer shell 301 and enter the storage trough 309 on the turntable 308. During testing, the third motor 304 is started, which drives the turntable 308 to rotate. When the storage trough 309 with test balls rotates to the position aligned with the discharge cylinder 303, the test balls in the storage trough 309 fall into the discharge cylinder 303 under the influence of gravity and are launched into the designated test area on the display screen 403. The turntable 308 continues to rotate, and the test balls in the subsequent storage troughs 309 rotate to the position of the discharge cylinder 303 in sequence to complete the launch, realizing the continuous launch of a batch of test balls.

[0040] like Figures 17-18As shown, in this embodiment, a fourth motor 305 is provided on the side wall of the discharge cylinder 303. A rotating plate 306 is fixedly connected to the output end of the fourth motor 305. An infrared emitter 307 is provided at the bottom of the turntable 308, and the infrared emitter 307 is located at the center of the bottom of the discharge cylinder 303. It should be noted that the fourth motor 305 provides the driving force for the rotation of the rotating plate 306, which controls the on / off state of the discharge cylinder 303, thereby controlling the launch timing of the test ball. The infrared emitter 307 emits infrared rays to accurately position the test area of ​​the display screen 403, providing precise guidance for the launch of the test ball. Before testing, infrared rays are emitted by infrared transmitter 307 and aimed at the designated test area of ​​display screen 403 to accurately locate the test position. During testing, after the transmitter 300 is adjusted into position and the display screen 403 is clamped and fixed, the fourth motor 305 is started. The fourth motor 305 drives the rotating plate 306 to rotate, so that the rotating plate 306 no longer blocks the discharge cylinder 303. At this time, the test ball in the storage tank 309 can be emitted through the discharge cylinder 303 to the infrared-positioned test area. After a single test is completed, the fourth motor 305 drives the rotating plate 306 to rotate in the opposite direction, blocking the discharge cylinder 303 again to prevent subsequent test balls from falling, waiting for the next test command. If continuous testing is required, the fourth motor 305 can be controlled to keep the rotating plate 306 in a position that does not block the discharge cylinder 303, so that the test balls can be emitted continuously. In this solution, the infrared transmitter 307 significantly improves the accuracy of the test ball's launch position and ensures the reliability of the test results. The rotating plate 306, in conjunction with the fourth motor 305, realizes the automatic control of the on / off state of the discharge cylinder 303, which can precisely control the launch timing of the test ball. It is suitable for both single tests and continuous tests, thus improving the applicability of the device and the controllability of the test.

[0041] The working principle of this invention is as follows: like Figures 4-7 As shown, the initial state of the impact resistance testing device for the LCD display 403 is as follows: the push plate 501 is located outside the push port 404 of the storage box 400; multiple display screens 403 to be tested are placed in layers inside the storage box 400 by several support bars 402 that are equidistantly spaced along the height direction; the bottom layer of display screens 403 is aligned with the push port 404 and the discharge port 405; the rotatable switch door on one side of the storage box 400 is closed; the first spring 802 is compressed; the pressure plate 803 is tightly locked to the winding roller 701 by the arc surface 8033, at which time the winding roller 701 cannot rotate; the push block 5021 extends out of the mounting groove 5023 of the mounting plate 5022 under the elastic action of the second spring 5024; the second guide surface 5025 faces the plate body 8031 ​​on the pressure plate 803 (e.g., ...). Figure 12 (As shown); the slots 202 of the two positioning plates 201 are in a relatively open state, and the clamping plate 204 is not in a clamped position.

[0042] At the start of the test, the pusher 501 is first driven by the pusher 500 (specifically the second cylinder) to move from the feed port 404 to the discharge port 405. The pusher 501 drives the rack 502 at the bottom to move synchronously. At this time, the rack 502 meshes with the gear 702, and the gear 702 is driven to rotate by the rack 502. However, due to the action of the one-way bearing 703, the rotation of the gear 702 cannot be transmitted to the take-up roller 701. The take-up roller 701 remains stationary, the length of the connecting rope 600 remains unchanged, and the support bar... 402 also remains stationary; at the same time, the rack 502 drives the mounting plate 5022 and the push block 5021 to move synchronously. The second guide surface 5025 of the push block 5021 contacts the plate 8031. Under the guidance of the second guide surface 5025, the push block 5021 is squeezed by the plate 8031 ​​and retracts into the mounting groove 5023. The second spring 5024 is compressed, which avoids the push block 5021 from interfering with the movement of the plate 8031. The pressure plate 803 always remains locked. The pusher plate 501 moves continuously, pushing the bottom-level display screen 403 to be tested out of the discharge port 405 until the display screen 403 is pushed between the slots 202 of the two positioning plates 201. At this time, the rack 502 separates from the gear 702, and the push block 5021 returns to its original position under the elastic action of the second spring 5024, extending out of the mounting groove 5023. Then, the first cylinders 203 on the two positioning plates 201 act simultaneously, and the piston rod pushes the clamping plate 204 to move towards the display screen 403 until the clamping plate 204 firmly clamps the display screen 403 in the slot 202, completing the fixation of the display screen 403. If it is necessary to test the display screen 403, the following steps can be taken: At the same angle, the first motor 207 is started, which drives the positioning plate 201 to rotate in the vertical plane. The positioning plate 201 drives the display screen 403 to rotate synchronously to the specified angle and then stops. If different areas of the display screen 403 need to be tested, the second motor 206 is started, which drives the mounting bracket 205 to rotate in the horizontal plane. The mounting bracket 205 drives the positioning plate 201 and the display screen 403 to rotate synchronously to the specified position and then stops. At the same time, the position of the transmitting device 300 is adjusted according to the test requirements, and the first electric slide rail 902 is controlled to slide along the first guide rail 901 (the length direction of the worktable 100), driving the vertical rail 900 and the... The subsequent components move to the corresponding positions, controlling the second electric slide rail 903 to slide along the vertical rail 900 to adjust the height of the transmitting device 300, and controlling the third electric slide rail 905 to slide along the third guide rail 904 (in the width direction of the worktable 100) to move the transmitting device 300 to a position precisely aligned with the test area of ​​the display screen 403. Then, the infrared transmitter 307 is activated, emitting infrared light to align with the designated test area of ​​the display screen 403 to complete the positioning. After positioning is completed, the fourth motor 305 is activated, driving the rotating plate 306 to rotate so that the rotating plate 306 no longer obstructs the discharge cylinder 303. Simultaneously, the third motor 304 is activated. 304 drives the turntable 308 to rotate. When the storage tank 309 with the test ball rotates to the position aligned with the discharge cylinder 303, the test ball in the storage tank 309 falls into the discharge cylinder 303 under the action of gravity. It is then accurately launched into the test area of ​​the infrared-positioned display screen 403 through the discharge cylinder 303, completing one impact resistance test. After a single test is completed, the fourth motor 305 drives the rotating plate 306 to rotate in the opposite direction to cover the discharge cylinder 303 again. The infrared transmitter 307 is turned off, and the first cylinder 203 drives the clamping plate 204 to reset and release the display screen 403. The staff can then manually or through a robotic arm remove the tested display screen 403. Then, the pushing device 500 drives the push plate 501 to reset from the discharge port 405 away from the push port 404. The push plate 501 drives the rack 502 to move in the opposite direction. First, the push block 5021 contacts and engages with the first guide surface 8032 on the plate 8031. Under the guidance of the first guide surface 8032, the push block 5021 cannot retract into the mounting groove 5023, thus pushing the plate 8031 ​​to move upward. The plate 8031 ​​drives the pressure plate 803 to rise along the guide shaft 801. The first spring 802 is stretched, and the pressure plate 803 separates from the take-up roller 701, releasing the lock on the take-up roller 701. As the push plate 501 continues to reset, the rack 502 and the gear 702 mesh again. At this time, the one-way bearing 703 allows the gear 702 to... The rotation is transmitted to the take-up roller 701, and the gear 702 drives the take-up roller 701 to rotate, causing the connecting rope 600 wound on the take-up roller 701 to be gradually released. Under the gravity of itself and the display screen 403 above, the support bar 402 moves downward a specified distance along the T-shaped limiting groove 401, conveying the next display screen 403 to be tested to the push port 404 for the next push action. When the push plate 501 returns to the initial position, the push block 5021 separates from the plate body 8031, the second spring 5024 restores its elastic deformation and pushes the push block 5021 to return to the original position. At the same time, the first spring 802 restores its elastic deformation and pushes the pressure plate 803 to move downward to relock the take-up roller 701. The rack 502 separates from the gear 702, completing one test cycle. By repeating the above steps of pushing, clamping, adjusting, testing, resetting, and replenishing, continuous testing of batches of display screens 403 to be tested in the storage box 400 can be achieved. After all display screens 403 in the storage box 400 have been tested, the pusher 500 drives the pusher plate 501 to separate the rack 502 from the gear 702. The operator manually rotates the winding roller 701 to wind up the connecting rope 600. The connecting rope 600 pulls each support bar 402 up and resets it along the limiting groove 401. Then, the rotatable switch door on one side of the storage box 400 is opened, and the display screens 403 to be tested are replenished into the storage box 403. After replenishment, the switch door is closed, and the device can then proceed to the next batch of testing. The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art and need not be elaborated upon. The content protected by this invention does not involve improvements to the software and methods.

[0043] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid crystal display screen impact resistance testing device, characterized in that, Includes a workbench (100), the top of which is provided with a clamping device (200) for clamping a display screen (403), and the workbench (100) is also supported above by a vertical rail (900) for launching a test ball. A storage box (400) is provided on one side of the workbench (100). A push port (404) and a discharge port (405) are respectively provided on the bottom two sides of the storage box (400). The discharge port (405) is located on one side of the clamping device (200). Several support bars (402) for supporting the display screen (403) are slidably connected to the inside two sides of the storage box (400). Several support bars (402) are equidistantly spaced along the height direction of the storage box (400). The storage box (400) is also provided with a driving device for driving the support bar (402) to rise or fall. The inner cavity of the storage box (400) extends through the bottom of the storage box (400), so that the support bar (402) can be moved to the bottom of the storage box (400). The storage box (400) has a push plate (501) and a pushing device (500) for driving the push plate (501) to move on one side of the push port (404).

2. The impact resistance testing device for a liquid crystal display screen according to claim 1, characterized in that, The storage box (400) has a support leg at the bottom and a limiting groove (401) inside the storage box (400). The limiting groove (401) has a T-shaped structure and extends vertically from inside the storage box (400) to the bottom of the support leg. The support bar (402) has a limiting block that matches the shape of the limiting groove (401) and the limiting block is slidably embedded in the limiting groove (401). A bracket (700) is provided on one side of the push port (404) of the storage box (400). The driving device includes a connecting rope (600), a take-up roller (701), and a linkage device. The take-up roller (701) is rotatably connected to the bracket (700). One end of the connecting rope (600) is connected to a number of limit blocks on the support bars (402) in sequence, and the other end extends upward and passes around the fixed pulley (601) at the top of the storage box (400) and is wound around the take-up roller (701). The linkage device drives the push plate (501) and the take-up roller (701) to connect. When the push plate (501) moves from the push port (404) to the discharge port (405), the take-up roller (701) does not rotate. When the push plate (501) moves from the discharge port (405) away from the push port (404), the linkage device drives the take-up roller (701) to rotate, so that the connecting rope (600) wound around the take-up roller (701) is released.

3. The impact resistance testing device for a liquid crystal display screen according to claim 2, characterized in that, The linkage device includes a gear (702), a rack (502), and a one-way bearing (703). The gear (702) is sleeved on the take-up roller (701) through the one-way bearing (703). The rack (502) is installed at the bottom of the push plate (501) and extends in a direction away from the discharge port (405). The rack (502) and the gear (702) can mesh with each other.

4. The impact resistance testing device for a liquid crystal display screen according to claim 3, characterized in that, A support plate (800) is provided below the discharge port (405) of the storage box (400). The support plate (800) is located below the winding roller (701). A guide shaft (801) is provided on the top of the support plate (800). The top of the guide shaft (801) extends above the winding roller (701). The guide shaft (801) is provided with a locking device for locking the take-up roller (701). The locking device includes a pressure plate (803) and a first spring (802). The pressure plate (803) is sleeved on the guide shaft (801). The bottom of the pressure plate (803) is provided with an arc-shaped surface (8033) adapted to the shape of the take-up roller (701). The first spring (802) is sleeved on the guide shaft (801). One end of the first spring (802) is connected to the pressure plate (803), and the other end is connected to the support plate (800). The rack (502) is provided with an unlocking device. When the rack (502) moves toward the discharge port (405), the unlocking device can prevent the pressure plate (803) from rising. When the rack (502) moves away from the push port (404), the unlocking device can make the pressure plate (803) rise.

5. The impact resistance testing device for a liquid crystal display screen according to claim 4, characterized in that, The pressure plate (803) has a plate body (8031) on the side facing the rack (502). The plate body (8031) has a first guide surface (8032) at the end near the push port (404). The first guide surface (8032) is inclined from top to bottom in the direction away from the push port (404). The unlocking device includes a mounting plate (5022), a push block (5021), and a second spring (5024). The mounting plate (5022) is installed on the end of the rack (502) away from the push port (404). The mounting plate (5022) has a mounting groove (5023) at the end facing the pressure plate (803). The push block (5021) is located in the mounting groove (5023). One end of the push block (5021) is connected to the mounting groove (5023) through the second spring (5024), and the other end extends outside the mounting groove (5023). The push block (5021) has a second guide surface (5025) at one end. The second guide surface (5025) is inclined and faces the plate body (8031).

6. The impact resistance testing device for a liquid crystal display screen according to claim 1, characterized in that, The clamping device (200) includes two positioning plates (201) spaced apart above the worktable (100). The two positioning plates (201) have a slot (202) at one end facing each other. The top of the positioning plate (201) is provided with a first cylinder (203). The piston rod of the first cylinder (203) extends into the slot (202) and is connected to a clamping plate (204). The outer side of the positioning plate (201) is rotatably connected to a mounting bracket (205), and the mounting bracket (205) is provided with a first motor (207) connected to the positioning plate (201). The first motor (207) is used to drive the positioning plate (201) to rotate in the vertical plane. The workbench (100) is provided with a second motor (206) connected to the mounting bracket (205) below it. The second motor (206) is used to drive the mounting bracket (205) to rotate on the horizontal plane.

7. The impact resistance testing device for a liquid crystal display screen according to claim 1, characterized in that, The workbench (100) is provided with a first guide rail (901), which is arranged along the length of the workbench (100). The first guide rail (901) is provided with a first electric slide rail (902) that is slidably connected to it. The vertical rail (900) is provided on the first electric slide rail (902). The vertical rail (900) is provided with a second electric slide rail (903) that is slidably connected to it. The second electric slide rail (903) is provided with a third guide rail (904), which is arranged along the width of the workbench (100). The third guide rail (904) is provided with a third electric slide rail (905) that is slidably connected to it. The launching device (300) is installed on the third electric slide rail (905).

8. The impact resistance testing device for a liquid crystal display screen according to claim 7, characterized in that, The launching device (300) includes a housing (301), a turntable (308) is rotatably connected inside the housing (301), and a plurality of storage troughs (309) are provided through the side wall of the turntable (308). The plurality of storage troughs (309) are equidistantly spaced along the circumference of the turntable (308). The top of the housing (301) is provided with a storage cylinder (302) for placing test balls. The storage cylinder (302) is vertically arranged and communicates with the interior of the housing (301). The bottom of the housing (301) is provided with a discharge cylinder (303) communicating with it. The turntable (308) is provided through the housing.

9. The impact resistance testing device for a liquid crystal display screen according to claim 8, characterized in that, The turntable (308) is driven to rotate by a third motor (304) mounted on the housing.

10. The impact resistance testing device for a liquid crystal display screen according to claim 8, characterized in that, The discharge cylinder (303) is provided with a fourth motor (305) on its side wall. The output end of the fourth motor (305) is fixedly connected to a rotating plate (306). The bottom of the turntable (308) is provided with an infrared emitter (307), which is located at the bottom center of the discharge cylinder (303).

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