A testing device for high-resolution displays

Abstract

This application relates to the field of display screen testing technology and discloses a testing device for high-resolution displays, aiming to solve the problems of increased cleaning difficulty and impact on the flatness of the platform. The invention utilizes the downward pressing action of a pressure plate to cause the supporting platform and the display screen to extend synchronously into the receiving component, thereby restricting the space around the display screen. This allows debris generated by the display screen shattering and splashing to remain on the supporting platform, thus avoiding increased cleaning difficulty. A second electric cylinder drives the tape dispensed from the tape tube to move downwards and approach the corresponding supporting platform, allowing the tape to contact and adhere to the debris remaining on the platform. Then, the second electric cylinder retracts and resets, causing the debris to leave the supporting platform synchronously with the tape. Due to this action, the debris leaves the supporting platform vertically, thereby reducing frictional damage to the platform and minimizing the impact on the flatness of the platform.

Description

Technical Field

[0001] This application relates to the field of display screen testing technology, and more particularly to a testing device for high-resolution display screens. Background Technology

[0002] High-resolution displays have the advantage of higher pixel density, covering more pixels in the same size, and can present more delicate and sharp image effects. After the high-resolution display is manufactured, it needs to undergo sampling pressure resistance testing to obtain the limit pressure value of the high-resolution display.

[0003] Some existing high-resolution display screen pressure testing equipment places the display screen on a support platform when performing pressure testing on a high-resolution display screen (hereinafter referred to as the display screen). Then, a pressure plate above gradually moves down to contact the display screen and continuously applies downward pressure until the display screen breaks. Through this action, the ultimate pressure value of the display screen is obtained. Afterwards, when cleaning the broken display screen on the support platform, the broken part is removed by an external robotic arm, while the debris (such as glass) is scraped off the platform by an external scraper.

[0004] However, when the aforementioned display screen breaks, it is easy to generate flying debris, which increases the difficulty of subsequent cleaning. At the same time, when the debris is scraped off the table with a scraper, the debris is prone to friction with the table surface, which affects the flatness of the table surface over a long period of use, and thus affects the accuracy of the display screen's pressure resistance test. Summary of the Invention

[0005] This application proposes a testing device for high-resolution displays, which has the advantages of reducing debris splashing and reducing friction damage to the table surface, thereby solving the problems of increased cleaning difficulty and affected table surface flatness.

[0006] To achieve the above objectives, this application adopts the following technical solution: a testing device for a high-resolution display screen, comprising: a lower housing and an upper housing, the lower housing and the upper housing being fixedly connected by support columns at four corners, a testing space existing between the lower housing and the upper housing, a pressure plate and a first electric cylinder for moving the pressure plate up and down being arranged within the testing space, and a supporting mechanism being arranged within the testing space, the supporting mechanism comprising:

[0007] The rotating power rod is fixedly installed at the center of the upper side of the lower housing and is used to drive the circumferentially oriented receiving component to rotate.

[0008] A stop post is a receiving component used to abut against and support the corresponding pressure plate.

[0009] The support platform is slidably installed in the groove of the receiving component to support the display screen;

[0010] The connecting rod is used in conjunction with spring number one to apply downward resistance to the support platform.

[0011] An adhesion mechanism is installed in the detection space to adhere and separate debris.

[0012] A pressing mechanism is provided on the lower side of the adhesion mechanism to increase the adhesion force between the adhesion mechanism and the debris.

[0013] Furthermore, the upper part of the rotating power rod is a rotating part, the receiving part is fixedly connected to the rotating part, the abutment is fixedly installed on the upper side of the lower box, the upper side of the abutment slides in contact with the bottom surface of the corresponding receiving part, the cross-sectional area of ​​the groove of the receiving part is larger than the cross-sectional area of ​​the pressure plate, the connecting rod is set at the four corners of the lower side of the receiving part, the upper end of the connecting rod passes through the receiving part and is fixedly connected to the lower side of the bearing platform, the abutment and the connecting rod are in different rotation paths, the first spring is sleeved on the outside of the connecting rod, and the two ends of the first spring are respectively fixedly connected to the bottom surface of the receiving part and the protrusion of the connecting rod.

[0014] Furthermore, the adhesion mechanism includes:

[0015] The No. 2 electric cylinder is fixedly installed inside the upper housing. The No. 2 electric cylinder and the No. 1 electric cylinder are arranged symmetrically about the rotation power rod as the center.

[0016] The mounting plate is fixedly installed on the telescopic rod of the No. 2 electric cylinder;

[0017] The collection tube and the tape tube are respectively set on the upper side of the mounting plate and located on both sides of the No. 2 electric cylinder;

[0018] The limiting cylinder is rotatably mounted on the upper and lower sides of the mounting plate and is located on the side of the collecting cylinder facing away from the tape cylinder.

[0019] The contact cylinder is located on the lower side of the mounting plate and near the tape cylinder. The tape from the tape cylinder passes through the contact cylinder and the limiting cylinder in sequence and is wound onto the collecting cylinder. The adhesive side of the tape faces outward.

[0020] Furthermore, both ends of the collecting cylinder and the tape tube are fixedly mounted with retaining seats, and retaining sleeves are rotatably mounted inside the retaining seats. The two ends of the collecting cylinder and the tape tube are slidably engaged with the retaining sleeves in the corresponding directions. The protruding parts at both ends of the collecting cylinder and the tape tube are spring telescopic structures. A driven gear is fixedly sleeved on the outer side of one retaining sleeve. A power motor is fixedly mounted on the side of the retaining seat facing away from the driven gear. The output shaft of the power motor passes through the retaining seat, and a driving gear is fixedly mounted at the end of the output shaft of the power motor. The driving gear and the driven gear form a meshing connection.

[0021] Furthermore, a first outer shell is provided on the outside of the tape tube, and a second outer shell is provided on the outside of the collection tube. Both the first and second outer shells are fixedly connected to the mounting plate. Both the first and second outer shells have openings for the passage of tape and debris. Both the first and second outer shells are provided with observation windows for observing the amount of tape used and the amount of debris collected. A baffle is fixedly installed at the opening of the first outer shell, and the baffle is located on the outside of the tape.

[0022] Furthermore, the pressing mechanism is disposed on the lower side of the mounting plate, and the pressing mechanism includes:

[0023] Folding plates are fixedly installed on both sides of the lower side of the mounting plate;

[0024] The screw is installed between the two side folding plates;

[0025] Motor No. 1 is fixedly installed on the folding plate near the limiting cylinder. The output rod of Motor No. 1 is fixedly connected to the corresponding end of the screw, and the other end of the screw is rotatably connected to the folding plate in the corresponding direction.

[0026] The contact cylinder includes a translation component and a roller, and the translation component is connected to the screw via a threaded drive.

[0027] Furthermore, the tape has a two-layer structure, with an adhesive layer closer to the support surface and a PET film layer further away from the support surface.

[0028] Furthermore, the width of the folding plate near the contact cylinder is equal to the width of the tape.

[0029] Furthermore, the translation component includes:

[0030] Threaded components, forming a threaded transmission connection with the screw;

[0031] The roller is mounted inside the mounting component and rotates.

[0032] The insert is fixedly installed on the upper side of the mounting component and away from the screw. The insert slides into the threaded component and is fixedly connected to the threaded component by a second spring.

[0033] This application has the following beneficial effects:

[0034] This application provides a testing device for high-resolution displays. By setting up a support mechanism, the downward action of the pressure plate drives the support platform and the display screen to extend into the receiving part simultaneously, thereby restricting the space around the display screen. This causes the debris generated by the display screen breaking and splashing to remain on the support platform, thus avoiding increased difficulty in subsequent cleaning.

[0035] By setting up an adhesion mechanism, the tape released from the tape tube is moved downward by the second electric cylinder and brought close to the corresponding support platform. This allows the tape to contact and adhere to the debris remaining on the support platform (the broken parts are removed). Then, the second electric cylinder retracts and resets, causing the debris to leave the support platform synchronously with the tape. Due to the above actions, the debris leaves the support platform vertically, thereby reducing frictional damage to the platform and minimizing the impact on the flatness of the platform.

[0036] By setting up the bearing mechanism and the adhesion mechanism, when the tape comes into contact with the debris on the bearing platform, it applies downward pressure to the bearing platform, causing the spring under the bearing platform to apply a reaction force to the bearing platform. This reaction force is converted into additional pressure from the tape on the debris, causing the adhesive layer of the tape to be more tightly embedded in the gaps on the surface of the debris, thereby enhancing the adhesion between the debris and the tape.

[0037] With the adhesion and pressing mechanisms in place, during the process of the tape contacting and adhering to the debris remaining on the support platform, the screw drives the contact cylinder to move towards the limiting cylinder, causing the contact cylinder to roll the tape. This causes the tape on the support platform to be pressed sequentially, further adhering the debris to the tape. This reduces the problem of reduced adhesion caused by the different spacing between the tape and the debris (due to the different volumes of the debris and the tape being approximately planar). As a result, the debris leaves the support platform vertically, reducing the impact on the flatness of the platform.

[0038] With the adhesion and pressing mechanisms in place, during the movement of the contact cylinder, the tape on one side of the contact cylinder will tilt upwards and carry debris away from the bearing platform. This action prevents the tape, which is moving away from the contact cylinder, from scratching the bearing platform with the attached debris. This further reduces frictional damage to the bearing platform. Attached Figure Description

[0039] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0040] This application can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0041] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0042] Figure 2 This is a schematic diagram of the bearing mechanism of the present invention;

[0043] Figure 3 This is a schematic diagram of the internal structure of the accommodating component of the present invention;

[0044] Figure 4 This is a schematic diagram of the mounting plate structure of the present invention;

[0045] Figure 5 This is a schematic diagram showing the arrangement of the tape tube and the collection tube in this invention;

[0046] Figure 6 This is a schematic diagram of the installation structure of the tape tube and the collection tube of the present invention;

[0047] Figure 7 This is a schematic diagram of the specific composition and structure of the contact cylinder of the present invention;

[0048] Figure 8 This is a schematic diagram of the working state of the contact cylinder of the present invention;

[0049] Figure 9 This is a schematic diagram showing the location of the sensor inside the pressure plate of the present invention;

[0050] Figure 10 This is a schematic diagram of the protruding portions at both ends of the tape tube of the present invention.

[0051] In the diagram: 1. Lower housing; 2. Upper housing; 3. Support column; 4. Pressure plate; 5. Electric cylinder No. 1; 6. Bearing mechanism; 60. Rotating power rod; 61. Receiving component; 62. Support column; 63. Bearing platform; 64. Connecting rod; 65. Spring No. 1; 7. Adhesion mechanism; 70. Electric cylinder No. 2; 71. Mounting plate; 72. Collection cylinder; 73. Tape cylinder; 74. Limiting cylinder; 75. Contact cylinder 750, Translation component; 7500, Threaded component; 7501, Mounting component; 7502, Insert block; 7503, No. 2 spring; 751, Roller; 8, Card holder; 9, Card shaft sleeve; 10, Driven gear; 11, Power motor; 12, Drive gear; 13, No. 1 housing; 14, No. 2 housing; 15, Baffle; 16, Pressing mechanism; 160, Folding plate; 161, Screw; 162, No. 1 motor. Detailed Implementation

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0053] Example 1: Please refer to Figures 1-8A high-resolution display screen testing device includes a lower housing 1, an upper housing 2 above the lower housing 1, and the lower housing 1 and upper housing 2 are fixedly connected by support columns 3 at the four corners. A testing space exists between the lower housing 1 and the upper housing 2, and a pressure plate 4 is installed within the testing space. An electric cylinder 5 is installed inside the upper housing 2, and the output rod of the electric cylinder 5 is fixedly connected to the pressure plate 4. A bearing mechanism 6 is installed within the testing space. The bearing mechanism 6 includes a rotating power rod 60, a receiving component 61, a stop column 62, a bearing platform 63, a connecting rod 64, and a spring 65. The rotating power rod 60 is fixedly installed at the center of the upper side of the lower housing 1. The upper part of the rotating power rod 60 is a rotating part (with an internal motor for driving the rotating part, as per existing technology). Receiving components 61 are equidistantly arranged circumferentially on the outer side of the rotating power rod 60, and the receiving components 61 are fixedly connected to the rotating part. The stop column 62 is fixedly installed on the upper side of the lower housing 1, and the stop column 62 supports the upper surface of the lower housing 1. The upper side of the pressure plate 4 and the abutment 62 slides in contact with the bottom surface of the corresponding receiving part 61 (the abutment 62 can also be configured as a hydraulic rod to rise and abut against the receiving part 61, and move down and away from the receiving part 61). A bearing platform 63 is slidably installed in the groove of the receiving part 61. The cross-sectional area of ​​the groove of the receiving part 61 is larger than the cross-sectional area of ​​the pressure plate 4. A connecting rod 64 is provided at each of the four corners of the lower side of the receiving part 61. The upper end of the connecting rod 64 passes through the receiving part 61 and contacts the lower side of the bearing platform 63. A fixed connection is made, with a No. 1 spring 65 sleeved on the outer side of the connecting rod 64 and below the receiving member 61. The upper end of the No. 1 spring 65 is fixedly connected to the bottom surface of the receiving member 61, and the lower end of the No. 1 spring 65 is fixedly connected to the protrusion of the connecting rod 64. The elastic force of the No. 1 spring 65 is greater than the weight of the display screen, so that when the display screen is placed on the surface of the support platform 63, the support platform 63 is still above the receiving member 61, and the abutment 62 and the connecting rod 64 are on different rotation paths.

[0054] In use, the display screen is placed on the surface of the support platform 63. Then, the power rod 60 is rotated 90 degrees so that the display screen is aligned with the pressure plate 4. Next, the first electric cylinder 5 drives the pressure plate 4 to press down on the display screen, causing the display screen to be compressed and the support platform 63 to move downwards. This causes the support platform 63 to stretch the first spring 65 via the connecting rod 64. Finally, both the display screen and the support platform 63 extend into the receiving member 61. The four walls of the receiving member 61 and the pressure plate 4 above the display screen restrict the space around the display screen, causing the pressure plate 4 to crush the display screen (the pressure plate 4 is equipped with a sensor, as per existing technology, such as...). Figure 9As shown, the sensor is used to detect the state of the display screen. When the display screen breaks, the sensor sends a signal to the first electric cylinder 5, causing the first electric cylinder 5 to stop pressing down and move up to reset. At the same time, the sensor records the pressure output by the first electric cylinder 5 when the display screen breaks and transmits the pressure value data back to the computer to obtain the limit pressure value of the display screen. The debris splashed from the broken display screen is trapped inside the container 61 and on the surface of the support platform 63, thereby reducing the impact of debris splashing on the difficulty of subsequent cleaning.

[0055] When the display screen is crushed, the first electric cylinder 5 retracts and resets, causing the pressure plate 4 to move upward and reset synchronously. At this time, the first spring 65 releases its elastic force and drives the supporting platform 63 to extend out of the receiving member 61 via the connecting rod 64. Since the upward movement of the pressure plate 4 and the upward movement of the supporting platform 63 are synchronized, the pressure plate 4 remains in contact with the display screen when the supporting platform 63 moves to its initial position. Afterward, the supporting platform 63 stops moving upward, while the pressure plate 4 continues to move upward. Through the above actions, the supporting platform 63 moves upward smoothly by utilizing the obstruction of the pressure plate 4. To prevent the support platform 63 from moving too quickly and causing the connecting rod 64 to collide with the first spring 65, thus transmitting vibration to the support platform 63, making it less likely for debris on the surface of the support platform 63 to detach due to vibration, thereby further reducing the impact of debris movement on the difficulty of subsequent cleaning, the power rod 60 is then rotated 90 degrees, so that the support platform 63 carrying the broken display screen and the corresponding receiving part 61 are moved away from the pressure plate 4, and the support platform 63 in the previous position moves the display screen to be tested to the corresponding pressure plate 4. Finally, the external robotic arm removes the broken body.

[0056] To reduce frictional damage to the bearing platform 63, please refer to... Figures 1-8 An adhesion mechanism 7 is provided within the detection space. The adhesion mechanism 7 includes a second electric cylinder 70, a mounting plate 71, a collection cylinder 72, a tape tube 73, a limiting cylinder 74, and a contact cylinder 75. The second electric cylinder 70 is fixedly installed inside the upper housing 2. The second electric cylinder 70 and the first electric cylinder 5 are arranged symmetrically about the rotation power rod 60. The mounting plate 71 is fixedly installed on the telescopic rod of the second electric cylinder 70. The collection cylinder 72 and the tape tube 73 are respectively provided on the upper side of the mounting plate 71 and on both sides of the second electric cylinder 70. The limiting cylinder 74 is rotatably installed on the upper and lower sides of the mounting plate 71 and on the side of the collection cylinder 72 facing away from the tape tube 73. The contact cylinder 75 is rotatably installed on the lower side of the mounting plate 71 and near the tape tube 73. The tape of the tape tube 73 passes through the contact cylinder 75 and the limiting cylinder 74 in sequence and is wound onto the collection cylinder 72, with the adhesive side of the tape facing outward.

[0057] As the shattered display screen rotates to the next position along with the support platform 63, the external robotic arm removes the shattered part. Then, the support platform 63 continues to rotate to the next position, so that the debris on the surface of the support platform 63 is aligned with the mounting plate 71. Then, the second electric cylinder 70 extends and moves the mounting plate 71 and the tape downward, so that the tape contacts and adheres to the debris retained on the support platform 63. Afterward, the second electric cylinder 70 retracts and resets, so that the debris leaves the support platform 63 synchronously with the tape. Due to the above actions, the debris moves vertically upward, making it less likely for the debris to slide and rub against the support platform 63, thereby reducing frictional damage to the support platform 63 and reducing the impact on the flatness of the support platform 63.

[0058] In addition, when the tape comes into contact with the debris on the support surface 63, it applies downward pressure to the support surface 63, causing the first spring 65 to be stretched, which in turn applies a reaction force to the support surface 63. This reaction force is converted into additional pressure of the tape on the debris, causing the adhesive layer of the tape to be more tightly embedded in the gaps on the surface of the debris, thereby enhancing the adhesion between the debris and the tape, allowing more debris to be carried away vertically, thereby further reducing the impact on the flatness of the support surface 63.

[0059] When the second electric cylinder 70 retracts and resets, the collecting cylinder 72 winds up the tape with the adhering debris, while the tape tube 73 releases new tape. Finally, the clean bearing platform 63 is rotated to the next position by the rotating power rod 60 for placing the display screen to be tested.

[0060] For easy removal and installation of the collection tube 72 and the tape tube 73, please refer to [link / reference needed]. Figure 5 and Figure 6 Both ends of the collecting cylinder 72 and the tape tube 73 are fixedly mounted with retaining seats 8. A retaining sleeve 9 is rotatably mounted inside the retaining seat 8. The ends of the collecting cylinder 72 and the tape tube 73 are slidably engaged with the retaining sleeves 9 in the corresponding directions. The protruding portions at both ends of the collecting cylinder 72 and the tape tube 73 are spring-loaded telescopic structures (the protruding portions at both ends of the collecting cylinder 72 and the tape tube 73 are slidably mounted inside the main body, and are popped out by springs within the main body; this is in the prior art, such as...). Figure 10 As shown), a driven gear 10 is fixedly sleeved on the outer side of the clasp sleeve 9 on one side. A power motor 11 is fixedly installed on the side of the clasp 8 facing away from the driven gear 10. The output shaft of the power motor 11 passes through the clasp 8. A driving gear 12 is fixedly installed at the end of the output shaft of the power motor 11. The driving gear 12 and the driven gear 10 form a meshing connection.

[0061] During installation, press the protruding ends of the collection cylinder 72 and the tape cylinder 73, and place them inside the corresponding card holder 8. Then, loosen the protruding ends of the collection cylinder 72 and the tape cylinder 73 so that the protruding ends slide and engage with the card sleeve 9 in the corresponding card holder 8. Then, pull out the tape from the tape cylinder 73 and pass through the contact cylinder 75 and the limiting cylinder 74, and finally wind it onto the collection cylinder 72. When the tape on the corresponding bearing platform 63 is covered with debris, the corresponding motors 11 of the collection cylinder 72 and the tape cylinder 73 will run, causing the corresponding drive gear 12 to drive the driven gear 10, the card sleeve 9, the collection cylinder 72 and the tape cylinder 73 to rotate until the collection cylinder 72 winds up the tape with debris, and the tape cylinder 73 simultaneously releases new tape.

[0062] To minimize the contact between the adhesive side of the tape and the outside air, please refer to [link / reference needed]. Figures 1-8 The tape reel 73 has a first outer shell 13 on its outer side, and the collection reel 72 has a second outer shell 14 on its outer side. Both the first outer shell 13 and the second outer shell 14 are fixedly connected to the mounting plate 71. Both the first outer shell 13 and the second outer shell 14 have openings for the passage of tape and debris. Both the first outer shell 13 and the second outer shell 14 are provided with observation windows for observing the amount of tape used and the amount of debris collected. A baffle 15 is fixedly installed at the opening of the first outer shell 13, and the baffle 15 is located on the outer side of the tape.

[0063] By setting up the first outer shell 13, the second outer shell 14 and the baffle 15, air is blocked from contacting the adhesive surface of the tape, thereby maintaining the adhesiveness of the tape. This increases the adhesive force of the tape on the debris, allowing more debris to be vertically removed by the tape, thereby further reducing the impact on the flatness of the support platform 63.

[0064] Example 2: To increase the adhesion of debris and tape and reduce frictional damage to the support surface 63, please refer to... Figures 1-8 A pressing mechanism 16 is provided on the lower side of the mounting plate 71. The pressing mechanism 16 includes a folding plate 160, a screw 161 and a first motor 162. The folding plate 160 is fixedly installed on both sides of the lower side of the mounting plate 71. The screw 161 is installed between the two folding plates 160. The first motor 162 is fixedly installed on the folding plate 160 near the limiting cylinder 74. The output rod of the first motor 162 is fixedly connected to the corresponding end of the screw 161. The other end of the screw 161 is rotatably connected to the folding plate 160 in the corresponding direction. The contact cylinder 75 includes a translation component 750 and a roller 751. The translation component 750 is threadedly connected to the screw 161.

[0065] During the process of the tape contacting and adhering to the debris on the surface of the bearing platform 63, the first motor 162 drives the screw 161 to rotate, causing the contact cylinder 75 to move towards the limiting cylinder 74, so that the roller 751 rolls the tape at various positions, thereby causing the tape on the bearing platform 63 to be pressed in sequence, making the debris adhere more tightly to the tape, causing more debris to leave the bearing platform 63 vertically, and reducing the impact on the flatness of the bearing platform 63.

[0066] Subsequently, when the second electric cylinder 70 retracts and resets, the first motor 162 drives the screw 161 to reverse, causing the contact cylinder 75 to reset.

[0067] To prevent debris from tearing the tape, the tape has a two-layer structure: the layer closest to the support surface 63 is an adhesive layer, and the layer furthest from the support surface 63 is a PET film layer.

[0068] To ensure the tape is flat and skewed, the width of the fold plate 160 near the contact cylinder 75 is equal to the width of the tape.

[0069] During the process of the contact cylinder 75 rolling the tape at various positions, the tape facing away from the moving direction of the contact cylinder 75 will be deflected upwards, and the debris will be carried away from the bearing platform 63. Through this action, the contact cylinder 75 is prevented from pulling the tape facing away from the moving direction of the contact cylinder 75 when rolling the tape, reducing the probability that the tape will carry the attached debris and scratch the bearing platform 63, thereby further reducing the frictional damage to the bearing platform 63.

[0070] To enable the contact cylinder 75 to contact debris of varying sizes, please refer to [link / reference needed]. Figures 1-8 The translation component 750 includes a threaded component 7500, a mounting component 7501, a plug 7502, and a second spring 7503. The threaded component 7500 forms a threaded transmission connection with the screw 161. The roller 751 is rotatably installed inside the mounting component 7501. The plug 7502 is fixedly installed on the upper side of the mounting component 7501 and at a position away from the screw 161. The plug 7502 slides into the threaded component 7500 and is fixedly connected to the threaded component 7500 by the second spring 7503.

[0071] During the process of the contact cylinder 75 rolling the tape at various positions, when the roller 751 contacts a larger piece of debris, it will drive the mounting part 7501 to move upward, causing the insert 7502 to further extend into the threaded part 7500 and compress the second spring 7503. When the roller 751 contacts a smaller piece of debris, the roller 751 moves downward under its own weight and contacts the debris. At the same time, the second spring 7503 will release its elastic force and apply it to the roller 751 through the insert 7502 and the mounting part 7501. By rolling the debris by moving up and down, the debris of different sizes can contact the tape, reducing the problem of reduced adhesion caused by the different distance between the tape and the debris (because the debris is of different sizes and the tape is approximately flat). This causes the debris to leave the bearing platform 63 vertically, reducing the impact on the flatness of the bearing platform 63.

Claims

1. A testing device for a high-resolution display screen, comprising: The lower housing (1) and the upper housing (2) are fixedly connected by support columns (3) at the four corners. There is a detection space between the lower housing (1) and the upper housing (2). A pressure plate (4) and a No. 1 electric cylinder (5) that drives the pressure plate (4) to move up and down are provided in the detection space. The detection space is characterized by having a bearing mechanism (6). The bearing mechanism (6) includes: Rotate the power rod (60), which is fixedly installed at the center of the upper side of the lower housing (1) to drive the circumferentially positioned receiving part (61) to rotate; Abutment (62) is used to abut against the receiving part (61) that supports the corresponding pressure plate (4). The support platform (63) is slidably installed in the groove of the receiving part (61) to support the display screen; The connecting rod (64) is used to cooperate with the first spring (65) to apply downward resistance to the bearing platform (63); An adhesion mechanism (7) is provided in the detection space to adhere and separate debris; A pressing mechanism (16) is provided on the lower side of the adhesion mechanism (7), and the adhesion force between the adhesion mechanism (7) and the debris is increased by the pressing mechanism (16); The adhesion mechanism (7) includes: The second electric cylinder (70) is fixedly installed inside the upper housing (2). The second electric cylinder (70) and the first electric cylinder (5) are arranged symmetrically about the rotating power rod (60). Mounting plate (71) is fixedly mounted on the telescopic rod of electric cylinder No. 2 (70); The collection tube (72) and the tape tube (73) are respectively set on the upper side of the mounting plate (71) and located on both sides of the No. 2 electric cylinder (70); The limiting cylinder (74) is rotatably mounted on the upper and lower sides of the mounting plate (71) and located on the side of the collecting cylinder (72) facing away from the tape cylinder (73); The contact cylinder (75) is located on the lower side of the mounting plate (71) and close to the tape cylinder (73). The tape of the tape cylinder (73) passes through the contact cylinder (75) and the limiting cylinder (74) in sequence and is wound onto the collecting cylinder (72). The adhesive side of the tape of the tape cylinder (73) faces outward. The pressing mechanism (16) is disposed on the lower side of the mounting plate (71), and the pressing mechanism (16) includes: Folding plate (160) is fixedly installed on both sides of the lower side of mounting plate (71); A screw (161) is installed between two side folding plates (160); The No. 1 motor (162) is fixedly installed on the folding plate (160) on the side near the limiting cylinder (74). The output rod of the No. 1 motor (162) is fixedly connected to the corresponding end of the screw (161), and the other end of the screw (161) is rotatably connected to the folding plate (160) in the corresponding direction. The contact cylinder (75) includes a translation member (750) and a roller (751), wherein the translation member (750) and the screw (161) form a threaded drive connection; The width of the fold (160) near the contact cylinder (75) is equal to the width of the tape.

2. The testing device for a high-resolution display screen according to claim 1, characterized in that, The upper part of the rotating power rod (60) is the rotating part. The receiving part (61) is fixedly connected to the rotating part. The abutment (62) is fixedly installed on the upper side of the lower box (1). The upper side of the abutment (62) slides in contact with the bottom surface of the corresponding receiving part (61). The cross-sectional area of ​​the groove of the receiving part (61) is larger than the cross-sectional area of ​​the pressure plate (4). The connecting rod (64) is set at the four corners of the lower side of the receiving part (61). The upper end of the connecting rod (64) passes through the receiving part (61) and is fixedly connected to the lower side of the bearing platform (63). The abutment (62) and the connecting rod (64) are in different rotation paths. The first spring (65) is sleeved on the outside of the connecting rod (64). The two ends of the first spring (65) are respectively fixedly connected to the bottom surface of the receiving part (61) and the protrusion of the connecting rod (64).

3. The testing device for a high-resolution display screen according to claim 1, characterized in that, Both ends of the collecting cylinder (72) and the tape tube (73) are fixedly installed with a retainer (8). The retainer (8) is rotatably installed with a retainer sleeve (9). The two ends of the collecting cylinder (72) and the tape tube (73) are slidably engaged with the retainer sleeve (9) in the corresponding direction. The protruding parts at both ends of the collecting cylinder (72) and the tape tube (73) are spring telescopic structures. A driven gear (10) is fixedly sleeved on the outer side of one retainer sleeve (9). A power motor (11) is fixedly installed on the side of the retainer (8) facing away from the driven gear (10). The output shaft of the power motor (11) passes through the retainer (8). A drive gear (12) is fixedly installed at the end of the output shaft of the power motor (11). The drive gear (12) and the driven gear (10) are meshed together.

4. The testing device for a high-resolution display screen according to claim 1, characterized in that, The tape tube (73) has a first outer shell (13) on its outer side, and the collection tube (72) has a second outer shell (14) on its outer side. Both the first outer shell (13) and the second outer shell (14) are fixedly connected to the mounting plate (71). Both the first outer shell (13) and the second outer shell (14) have openings for the passage of tape and debris. Both the first outer shell (13) and the second outer shell (14) are provided with observation windows for observing the amount of tape used and the amount of debris collected. A baffle (15) is fixedly installed at the opening of the first outer shell (13), and the baffle (15) is located on the outer side of the tape.

5. The testing device for a high-resolution display screen according to claim 1, characterized in that, The tape in the tape tube (73) has a two-layer structure. The layer closer to the support platform (63) is an adhesive layer, and the layer further away from the support platform (63) is a PET film layer.

6. The testing device for a high-resolution display screen according to claim 1, characterized in that, The translation component (750) includes: The threaded part (7500) forms a threaded drive connection with the screw (161); The roller (751) is rotatably mounted inside the mounting component (7501); The insert (7502) is fixedly installed on the upper side of the mounting part (7501) and away from the screw (161). The insert (7502) slides into the threaded part (7500) and is fixedly connected to the threaded part (7500) by the second spring (7503).

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