Anti-deviation touch screen production deformation detection device

Abstract

The utility model belongs to touch -sensitive screen production detection equipment field especially relates to a kind of deformation detection devices for preventing deviation of touch -sensitive screen production. Including rack and workbench being set on rack, the both sides of the rack are respectively provided with feeding conveyor belt and discharge conveyor belt, one end of the rack is provided with touch screen grabbing conveying mechanism, workbench is provided with placing table, the top of the placing table is provided with through-hole, the through-hole is evenly distributed on placing table, the upper of workbench is also provided with deviation-preventing mechanism, the utility model is provided with feeding conveyor belt and discharge conveyor belt in the both sides of workbench, the automatic conveying of display screen is completed, the setting of touch screen grabbing conveying mechanism is passed through, realize the movement of touch screen between feeding conveyor belt, placing table and discharge conveyor belt, the accurate placement of conveyor belt is effectively realized by the setting of deviation-preventing mechanism, and then cooperate the use of digital dial gauge, automatically complete the deformation inspection of touch screen.

Description

Technical Field

[0001] This utility model belongs to the field of touch screen production and testing equipment, and in particular relates to a deformation detection device for touch screen production that prevents offset. Background Technology

[0002] A touchscreen is a sensory display device that can receive input signals from touch points. After the touchscreen is manufactured, companies need to perform deformation and warping tests. Deformation testing is mainly used to accurately locate touch commands, distinguish between valid operations and accidental touches, and ensure the reliability of the interaction. Warping testing, on the other hand, is used to ensure the functional reliability, structural stability, and user experience of the touchscreen, preventing touch failure, display abnormalities, or safety hazards caused by deformation.

[0003] Existing deformation detection methods are mainly divided into contact and non-contact detection. Contact detection uses the stylus of a dial indicator (accuracy 0.001mm) or a micrometer indicator (accuracy 0.01mm) to contact the screen surface, and determines the deformation by the difference in readings at multiple points. This type of operation is mainly done manually, which is inefficient and labor-intensive. Utility Model Content

[0004] This invention addresses the technical problems existing in the deformation detection of touch screens by proposing a deformation detection device for touch screen production that is reasonably designed, simple in structure, easy to process, and capable of automatic detection, thus preventing offset.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a deformation detection device for anti-deviation touch screen production, including a frame and a worktable mounted on the frame. A feeding conveyor belt and a discharging conveyor belt are respectively mounted on both sides of the frame. A touch screen gripping and conveying mechanism is mounted at one end of the frame. A placement platform is mounted on the worktable, and through holes are evenly distributed on the top of the placement platform. An anti-deviation mechanism is also mounted on the worktable, comprising anti-deviation plates mounted on both sides of the placement platform and push plates mounted at both ends of the placement platform. The anti-deviation plates are slidably mounted on the worktable along the end face of the placement platform, and the push plates are slidably mounted on the worktable along the side of the placement platform. A vacuum pump is connected to the through holes. A digital dial indicator is also mounted above the placement platform, and the digital dial indicator can move along the X-axis, Y-axis, and Z-axis directions.

[0006] Preferably, the anti-deviation mechanism further includes a movable plate vertically disposed at the bottom of the anti-deviation plate. The worktable is provided with a guide slot, and the movable plate extends through the guide slot to the bottom of the worktable. A guide rack is connected to the bottom of the movable plate, and a drive gear meshes between the two guide racks. The drive gear is fitted with a movable motor.

[0007] Preferably, the back of the guide rack is provided with a slider, and the bottom of the worktable is provided with a guide rail that cooperates with the slider.

[0008] Preferably, the workbench is also provided with a fixing plate, which is located at the end of the push plate away from the placement table. An anti-deviation cylinder is provided on the fixing plate, and the power end of the anti-deviation cylinder is connected to the push plate.

[0009] Preferably, the touch screen gripping and conveying mechanism includes a height frame set on the workbench and a moving platform set on the height frame. A lifting cylinder is set on the moving platform, with the output end of the lifting cylinder facing downwards. The lifting cylinder is slidably set on the moving platform, and the power end of the lifting cylinder is connected to a negative pressure suction cup.

[0010] Preferably, the digital dial indicator can move along the X-axis, Y-axis, and Z-axis directions via a moving mechanism. The worktable is square in shape. The moving mechanism includes support rods located at the corners of the worktable. Two support rods at the same end are topped with auxiliary moving platforms. An axial moving platform is located between the two auxiliary moving platforms. The axial moving platform is slidably mounted on the auxiliary moving platforms. A lifting mechanism is located on the axial moving platform. The lifting mechanism is slidably mounted on the axial moving platform. The digital dial indicator is located at the output end of the lifting mechanism.

[0011] Preferably, the mobile platform, auxiliary mobile platform, and axial mobile platform all include a mobile frame with a U-shaped cross-section and a drive motor disposed at one end of the mobile frame. The power end of the drive motor is connected to a lead screw, which is rotatably mounted on the mobile frame. A lead screw nut is fitted on the lead screw, and a connecting seat is fitted outside the lead screw nut. The connecting seat is Y-shaped, and a limit guide plate is provided on the mobile frame, which passes through the connecting seat.

[0012] Preferably, a push cylinder is also provided on the top of the height frame, and the moving platform is located at the power end of the push cylinder.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model provides a deformation detection device for touch screen production that prevents offset. By setting up feeding conveyor belts and discharging conveyor belts on both sides of the worktable, the automatic conveying of the display screen is completed. By setting up a touch screen gripping conveyor mechanism, the touch screen can move between the feeding conveyor belt, the placement table, and the discharging conveyor belt. By setting up an anti-offset mechanism, the accurate placement of the conveyor belt is effectively achieved. Then, in conjunction with the use of a digital dial indicator, the deformation inspection of the touch screen is automatically completed. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the deformation detection device for anti-offset touchscreen production provided in Example 1; Figure 2 A structural schematic diagram of the anti-offset deformation detection device for touch screen manufacturing provided in Example 1 from another angle; Figure 3 This is a schematic diagram of the structure between the worktable and the anti-deviation mechanism provided in Embodiment 1; Figure 4 This is a schematic diagram of the structure of the bottom of the workbench provided in Embodiment 1; Figure 5 A bottom view of the workbench provided in Embodiment 1; Figure 6 This is a schematic diagram of the structure of the mobile platform provided in Example 1; Figure 7 This is a schematic diagram of the mobile platform provided in Example 1 without the limiting guide plate; In the above figures, 1. Frame; 11. Workbench; 111. Guide slot; 12. Placement platform; 121. Through hole; 13. Display screen; 2. Feed conveyor belt; 3. Discharge conveyor belt; 4. Touch screen gripping and conveying mechanism; 41. Height frame; 42. Push cylinder; 43. Moving platform; 431. Moving frame; 432. Drive motor; 433. Lead screw; 434. Connecting seat; 435. Limiting guide plate; 44. Lifting cylinder; 45. Negative pressure suction cup; 5. Anti-deviation mechanism; 51. Anti-deviation plate; 52. Moving plate; 53. Guide rack; 54. Drive gear; 55. Moving motor; 56. Push plate; 57. Fixed plate; 58. Anti-deviation cylinder; 6. Moving mechanism; 61. Support rod; 62. Auxiliary moving platform; 63. Axial moving platform; 64. Lifting mechanism; 7. Digital dial indicator. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1, as Figures 1-7 As shown, this embodiment aims to achieve automated testing of touch screens. It should be noted that in this embodiment, a small-sized touch screen is used to explain the specific implementation structure. Specifically, the anti-offset deformation testing device for touch screen production provided in this embodiment includes a frame 1 and a worktable 11 set on the frame 1. In this embodiment, the frame 1 is a frame-like structure made of aluminum profiles, and the worktable 11 is a plate set on the frame 1, thereby forming a testing platform.

[0019] Feeding conveyor belt 2 and discharging conveyor belt 3 are respectively arranged on both sides of the frame 1. Feeding conveyor belt 2 and discharging conveyor belt 3 are mainly used to complete the self-feeding and conveying task of the touch screen. In order to realize the movement of the touch screen between the feeding conveyor belt 2, the discharging conveyor belt 3 and the worktable 11, a touch screen gripping and conveying mechanism 4 is arranged at one end of the frame 1. Specifically, the touch screen gripping and conveying mechanism 4 includes a height frame 41 arranged on the worktable 11 and a moving platform 43 arranged on the height frame 41. In this embodiment, the height frame 41 is composed of an H-shaped profile and a flat plate. Its main purpose is to increase the height of the moving platform 43 to facilitate the gripping and placement of the touch screen. A lifting cylinder 44 is arranged on the moving platform 43. The output end of the lifting cylinder 44 is arranged downward. The power end of the lifting cylinder 44 is connected to a negative pressure suction cup 45. In this way, the touch screen is grasped by negative pressure adsorption, so that it can be easily moved from the feeding conveyor belt 2 to the worktable 11. After the inspection is completed, it is moved from the worktable 11 to the discharge conveyor belt 3. Two lifting cylinders 44 can be set, and the distance between the two cylinders is the distance between the placement table 12 and the discharge conveyor belt 3, which is also equal to the distance between the feeding conveyor belt 2 and the placement table 12, so as to complete the material picking and discharging in one go.

[0020] The function of the moving platform 43 is to facilitate the reciprocating movement of the lifting cylinder 44. Therefore, the moving platform 43 can be a cylinder, hydraulic cylinder, or electric cylinder for pushing, or it can be the structure provided in this embodiment. Specifically, the moving platform 43 includes a U-shaped moving frame 431 and a drive motor 432 located at one end of the moving frame 431. The power end of the drive motor 432 is connected to a lead screw 433, so that the lead screw 433 can be rotatably mounted on the moving frame 431. It should be noted that the drive motor 43... Both the lead screw 433 and the lead rod 433 are housed within the groove of the moving frame 431. A lead screw 433 nut is fitted onto the lead screw 433. The lead screw 433 and the lead screw 433 nut are typical mechanisms that convert rotary motion into linear motion. To limit their movement, a connecting seat 434 is fitted around the lead screw 433 nut. The connecting seat 434 is Y-shaped, meaning its bottom is used to accommodate the lead screw 433 nut. Simultaneously, a limiting guide plate 435 is provided on the moving frame 431, passing through the connecting seat 434. Thus, the limiting guide plate 435 also provides a certain limit to the lead screw 433 nut, ensuring the stability of the movement.

[0021] To facilitate the testing of the touch screen, a placement platform 12 is provided on the workbench 11. The placement platform 12 is rectangular in shape, and its length and width are consistent with the length and width of the touch screen to be tested, so as to maintain support for the touch screen. Through holes 121 are provided on the top of the placement platform 12. The through holes 121 are evenly distributed on the placement platform 12. Specifically, the through holes 121 are located in the middle and at the four corners of the placement platform 12. Negative pressure heads can be installed in the through holes 121, or they can be directly connected to the negative pressure pipes and vacuum pumps to form an adsorption of the touch screen.

[0022] Considering that it is difficult to ensure that the touch screen and the placement table 12 are flush when the touch screen is placed by the touch screen gripping and conveying mechanism 4, an anti-deviation mechanism 5 is also provided on the worktable 11. The anti-deviation mechanism 5 includes anti-deviation plates 51 on both sides of the placement table 12. The anti-deviation plates 51 are slidably disposed on the worktable 11 along the end face direction of the placement table 12, that is, the anti-deviation plates 51 are slidably disposed along the long side direction of the placement table 12.

[0023] To enable the sliding of the anti-deviation plate 51, a movable plate 52 is provided at the end of the anti-deviation plate 51 away from the placement table 12. The movable plate 52 and the anti-deviation plate 51 are arranged at a perpendicular angle, with the anti-deviation plate 51 horizontal and the movable plate 52 vertical. A guide slot 111 is provided on the worktable 11, through which the movable plate 52 extends to the bottom of the worktable 11. A guide rack 53 is connected to the bottom of the movable plate 52, and a drive gear 54 meshes between the two guide racks 53. A moving motor 55 is mounted on the drive gear 54. Thus, under the action of the moving motor 55, the two anti-deviation plates 51 can move towards or away from each other. To ensure the stability of the movement, a slider is provided on the back of the guide rack 53, and a guide rail is installed at the bottom of the worktable 11. The stability of the movement is ensured by the stability of the guide rail. Meanwhile, the anti-deviation plate 51 can also correct the sides of the touch screen. If the touch screen is tilted, it also needs end-face correction. Therefore, push plates 56 are provided at both ends of the placement platform 12. The length of the push plates 56 should be the same as or slightly less than the length of the placement platform 12. Since the push plates 56 need to correct the end-face, they are slidably mounted on the worktable 11 along the side of the placement platform 12. To facilitate this sliding, a fixing plate 57 is provided on the worktable 11. The fixing plate 57 is located at the end of the push plates 56 away from the placement platform 12. An anti-deviation cylinder 58 is provided on the fixing plate 57, and the power end of the anti-deviation cylinder 58 passes through the fixing plate 57 and connects to the push plates 56. This allows the push plates 56 to be pushed. It should be noted that when correcting the touch screen, the push plates 56 must be used to align it first, and then the anti-deviation plate 51 must be used to align it further.

[0024] This completes the placement of the touchscreen. The next step is to detect any deformation of the touchscreen.

[0025] Considering that touch detection utilizes the stylus of a dial indicator (accuracy 0.001mm) or a micrometer (accuracy 0.01mm) to contact the screen surface and determine deformation by comparing readings at multiple points, a digital dial indicator 7 is also installed above the placement platform 12. The digital dial indicator 7 can move along the X-axis, Y-axis, and Z-axis. In this embodiment, the main purpose of using the digital dial indicator 7 is that it can connect to a computer via a communication protocol and display the data on a screen, allowing staff to easily observe data changes and determine whether deformation has occurred. Of course, existing artificial intelligence technology can also be used for automatic detection.

[0026] In this embodiment, the digital micrometer 7 can move along the X-axis, Y-axis, and Z-axis directions via the moving mechanism 6. The moving mechanism 6 includes support rods 61 located at the corners of the worktable 11. An auxiliary moving platform 62 is located on the top of two support rods 61 at the same end. An axial moving platform 63 is located between the two auxiliary moving platforms 62 and is slidably mounted on the auxiliary moving platforms 62. The structures of the auxiliary moving platforms 62 and the axial moving platform 63 are identical to those of the moving platform 43, and therefore will not be described in detail in this embodiment. Thus, the axial moving platform 63 can move on the auxiliary moving platform 62. The motors of the two auxiliary moving platforms 62 are controlled using a master-slave control scheme. A lifting mechanism 64 is located on the axial moving platform 63 and is slidably mounted on it. The digital micrometer 7 is located at the output end of the lifting mechanism 64. This completes the movement of the digital micrometer 7 along the X-axis, Y-axis, and Z-axis directions, thereby enabling the detection of the touchscreen. In this embodiment, to avoid excessively rapid cylinder movement, the lifting mechanism 64 is an electric cylinder.

[0027] To avoid interference between the touchscreen gripping and conveying mechanism 4 and the anti-deviation mechanism 5 during operation, a push cylinder 42 is installed at the top of the height frame 41, and the moving platform 43 is located at the power end of the push cylinder 42. In this way, the push cylinder 42 can move the platform away from or closer to the placement table 12, thereby avoiding potential interference.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A deformation detection device for anti-offset touchscreen production, characterized in that, The device includes a frame and a worktable mounted on the frame. A feeding conveyor belt and a discharging conveyor belt are respectively installed on both sides of the frame. A touchscreen gripping and conveying mechanism is installed at one end of the frame. A placement platform is installed on the worktable, and through holes are evenly distributed on the top of the placement platform. An anti-deviation mechanism is also installed on the worktable, comprising anti-deviation plates on both sides of the placement platform and push plates at both ends of the placement platform. The anti-deviation plates slide along the end face of the placement platform on the worktable, and the push plates slide along the side of the placement platform on the worktable. A vacuum pump is connected to the through holes. A digital dial indicator is also installed above the placement platform, and the digital dial indicator can move along the X-axis, Y-axis, and Z-axis.

2. The deformation detection device for anti-offset touchscreen production according to claim 1, characterized in that, The anti-deviation mechanism also includes a movable plate vertically arranged at the bottom of the anti-deviation plate. The worktable is provided with a guide slot. The movable plate extends through the guide slot to the bottom of the worktable. The bottom of the movable plate is connected to a guide rack. A drive gear meshes between the two guide racks. The drive gear is fitted with a movable motor.

3. The deformation detection device for anti-offset touchscreen production according to claim 2, characterized in that, The guide rack has a slider on its back, and the bottom of the worktable has a guide rail that cooperates with the slider.

4. The deformation detection device for anti-offset touchscreen production according to claim 3, characterized in that, The workbench is also equipped with a fixing plate, which is located at the end of the push plate away from the placement table. An anti-deviation cylinder is installed on the fixing plate, and the power end of the anti-deviation cylinder is connected to the push plate.

5. The deformation detection device for anti-offset touchscreen production according to claim 4, characterized in that, The touch screen gripping and conveying mechanism includes a height frame set on the workbench and a moving platform set on the height frame. A lifting cylinder is set on the moving platform, with the output end of the lifting cylinder facing downwards. The lifting cylinder is slidably set on the moving platform, and the power end of the lifting cylinder is connected to a negative pressure suction cup.

6. The deformation detection device for anti-offset touchscreen production according to claim 5, characterized in that, The digital dial indicator can move along the X-axis, Y-axis, and Z-axis via a moving mechanism. The worktable is square in shape. The moving mechanism includes support rods located at the corners of the worktable. Two support rods at the same end are topped with auxiliary moving platforms. An axial moving platform is located between the two auxiliary moving platforms. The axial moving platform is slidably mounted on the auxiliary moving platforms. A lifting mechanism is located on the axial moving platform. The digital dial indicator is located at the output end of the lifting mechanism.

7. The deformation detection device for anti-offset touchscreen production according to claim 6, characterized in that, The mobile platform, auxiliary mobile platform, and axial mobile platform all include a mobile frame with a U-shaped cross-section and a drive motor located at one end of the mobile frame. The power end of the drive motor is connected to a lead screw, which is rotatably mounted on the mobile frame. A lead screw nut is fitted on the lead screw, and a connecting seat is fitted around the lead screw nut. The connecting seat is Y-shaped, and a limit guide plate is provided on the mobile frame, which passes through the connecting seat.

8. The deformation detection device for anti-offset touchscreen production according to claim 7, characterized in that, The top of the height frame is also equipped with a push cylinder, and the mobile platform is located at the power end of the push cylinder.

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