Visual positioning feeding device and curved surface screen pasting equipment
Through the use of visual positioning and loading devices, the problem of low positioning accuracy of the material sheet in the mobile phone manufacturing of curved screens is solved, and the precise alignment and high-quality fit of the material sheet is achieved.
Patent Information
- Application Number
- CN202421294956.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-06
AI Technical Summary
During the manufacturing process of curved screen mobile phones, the fitting accuracy of the optical adhesive film and mobile phone cover is limited by manual or mechanical positioning methods, resulting in low alignment accuracy and affecting the fitting quality.
A visual positioning and loading device is adopted, which includes a positioning structure, a material transfer structure and a control structure. The position information of the material sheet is obtained by taking photos through a visual positioning mechanism, and the movement of the material transfer structure is controlled to achieve accurate alignment and loading.
It improves the positioning accuracy and fitting quality of the tape, enhances the accurate alignment of the mobile phone cover plate and optical adhesive film, and improves the yield of fitting.
Smart Images
Figure CN222590744U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mobile phone accessory processing, and in particular relates to a visual positioning feeding device and a curved surface screen pasting device. Background Art
[0002] At present, curved screen mobile phones are becoming more and more prominent in the mobile phone market and have become high-end models that are highly anticipated and sought after. In the manufacturing process of curved screens, the full bonding technology of optical adhesive film (OCA) and mobile phone cover is widely used to provide more excellent visual effects and tactile experience.
[0003] When the OCA full bonding equipment is used for processing, manual or mechanical positioning is generally adopted. The material transfer robot then moves the positioned mobile phone cover plate and / or optical film to the lamination mold for lamination.
[0004] However, before lamination, the mobile phone cover and the optical film are stacked, and manual positioning or mechanical positioning results in low alignment accuracy between the mobile phone cover and the optical film. When high lamination accuracy is required, this positioning method will affect the quality of subsequent lamination and easily lead to poor lamination between the mobile phone cover and the optical film. Utility Model Content
[0005] The purpose of the embodiments of the present application is to provide a visual positioning loading device, aiming to solve the problem of how to improve the positioning accuracy of the visual positioning loading device.
[0006] To achieve the above purpose, the technical solution adopted in this application is:
[0007] In a first aspect, a visual positioning loading device is provided for loading a first sheet and a second sheet, the visual positioning loading device comprising:
[0008] A positioning structure, comprising a first loading platform for carrying the first material sheet, a second loading platform arranged at a distance from the first loading platform and for carrying the second material sheet, and a visual positioning mechanism located above the first loading platform and the second loading platform;
[0009] a material transfer structure for picking up the first material sheet from the first material loading platform or picking up the second material sheet from the second material loading platform, and the visual positioning mechanism for taking a photograph to obtain first position information of the first material sheet after being picked up by the material transfer structure; the visual positioning mechanism is also for taking a photograph to obtain second position information of the second material sheet after being located on the second material loading platform or being picked up by the material transfer structure; and
[0010] A control structure controls the movement of the material moving structure according to the first position information or the second position information.
[0011] In some embodiments, the visual positioning mechanism includes a first camera and a second camera, wherein two first cameras are arranged at intervals along a first direction, and two second cameras are also arranged at intervals along a second direction, and the first direction and the second direction are orthogonal.
[0012] In some embodiments, the visual positioning mechanism also includes a first adjustment component and a second adjustment component, the first adjustment component is connected to the first camera and adjusts the position of the first camera along the first direction, and the second adjustment component is connected to the second camera and adjusts the position of the second camera along the second direction.
[0013] In some embodiments, the first adjustment component includes a first base, a first sliding cover slidably disposed on the first base and connected to the first camera, and a first adjustment rod, the two ends of the first adjustment rod are respectively connected to the first base and the first sliding cover, and are used to drive the first sliding cover to slide along a first direction; and / or the second adjustment component includes a second base, a second sliding cover slidably disposed on the second base and connected to the second camera, and a second adjustment rod, the two ends of the second adjustment rod are respectively connected to the second base and the second sliding cover, and are used to drive the second sliding cover to slide along a second direction.
[0014] In some embodiments, the material transfer structure includes a material transfer gantry and a material transfer robot slidably disposed on the material transfer gantry, the material transfer gantry is adjacent to the first loading platform and the second loading platform, and the material transfer robot is used to pick up the first material sheet and / or the second material sheet.
[0015] In some embodiments, the material transfer robot includes a material transfer arm slidably disposed on the material transfer gantry, a lifting mechanism disposed on the material transfer arm, a rotating motor connected to the lifting mechanism, and a material transfer adsorption plate connected to the rotating motor.
[0016] In some embodiments, the first loading platform includes a first supporting plate located below the visual positioning mechanism and a supporting seat for supporting the first supporting plate, and the first material sheet is placed on the upper surface of the first supporting plate.
[0017] In some embodiments, the second loading platform includes a second loading plate with a limiting groove and a limiting adsorption plate at least partially located in the limiting groove and used to adsorb the second material sheet. The second loading platform can be lowered a predetermined distance relative to the limiting adsorption plate so that the limiting adsorption plate is exposed at the limiting groove.
[0018] In some embodiments, the second loading platform further includes a bearing bottom plate disposed relative to the second bearing plate and a lifting driver connected to the bearing bottom plate and used for driving the second bearing plate to rise and fall.
[0019] In a second aspect, a curved screen-mounting device is provided, which includes the visual positioning loading device, and the curved screen-mounting device also includes a pressing mold, and the pressing mold is used to press the first material sheet and the second material sheet.
[0020] The beneficial effect of the present application is that the control structure controls the movement of the material transfer structure according to the first position information or the second position information, so as to release the first sheet and the second sheet at the designated position. For example, the control structure controls the movement of the material transfer structure according to the first position information to release the first sheet on the laminating mold, and the control structure controls the movement of the material transfer structure according to the second position information to release the second sheet on the laminating mold and stack it on the first sheet. Of course, the second sheet can also be placed on the laminating mold first, and then the first sheet can be placed on the second sheet. Since the first sheet and the second sheet are both positioned by the visual positioning mechanism, after the first sheet and the second sheet are both released at the designated position, the visual positioning mechanism can ensure the alignment and positioning accuracy between the two, so that in the subsequent laminating process, the first sheet and the second sheet can be accurately fitted and the yield rate of the fitting can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the visual positioning feeding device provided in an embodiment of the present application;
[0023] Figure 2 yes Figure 1 A partial enlarged view of the A part of the visual positioning feeding device;
[0024] Figure 3 yes Figure 1 A three-dimensional exploded schematic diagram of the second loading platform of the visual positioning loading device;
[0025] Figure 4 yes Figure 1 A front view schematic diagram of a visual positioning feeding device;
[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of a curved screen-mounted device provided in another embodiment of the present application.
[0027] Among them, the reference numerals in the figure are:
[0028] 100, visual positioning loading device; 200, positioning structure; 201, first loading platform; 101, first material sheet; 221, first bearing plate; 211, support seat; 202, second loading platform; 212, second bearing plate; 222, bearing bottom plate; 232, limiting adsorption plate; 242, lifting drive; 300, material transfer structure; 400, pressing mold; 500, visual positioning mechanism; 501, first camera; 511, first slide cover; 521, first adjustment rod; 531, first base; 502, second camera; 512, second slide cover; 522, second adjustment rod; 532, second base; 506, positioning plate; 203, limiting groove; 301, gantry; 302, lifting mechanism; 303, rotating motor; 304, material transfer adsorption plate; 600, frame; 305, material transfer robot. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0030] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0031] See also Figures 1 to 3 The embodiment of the present application provides a visual positioning loading device 100 and a curved screen mounting device, wherein the visual positioning loading device 100 is used to position and load a first material sheet 101 and a second material sheet. In the embodiment of the present application, the first material sheet 101 is a cover plate on a mobile phone, and the second material sheet is an OCA film (optical adhesive film).
[0032] The visual positioning and loading device 100 controls the positioning structure 200 , the material moving structure 300 and the control structure.
[0033] See also Figures 1 to 3The positioning structure 200 includes a first loading platform 201 for carrying a first material sheet 101, a second loading platform 202 arranged at an interval from the first loading platform 201 and for carrying a second material sheet, and a visual positioning mechanism 500 located above the first loading platform 201 and the second loading platform; it can be understood that the upper surface of the first loading platform 201 and the upper surface of the second loading platform 202 are both flatly arranged, and the first material sheet 101 and the second material sheet are respectively flatly arranged on the first loading platform 201 and the second loading platform 202.
[0034] See also Figures 1 to 3 , the material transfer structure 300 is slidably arranged, and can pick up the first material sheet 101 from the first material loading platform 201 or the second material sheet from the second material loading platform 202, and release the first material sheet 101 or the second material sheet to a specified position, such as on the pressing mold 400. The visual positioning mechanism 500 is used to take a photo to obtain the first position information of the first material sheet 101 after being picked up by the material transfer structure 300; the visual positioning mechanism 500 is also used to take a photo to obtain the second position information of the second material sheet on the second material loading platform 202 or after being picked up by the material transfer structure 300 (); it can be understood that the visual positioning mechanism 500 takes a photo of the first material sheet 101 picked up by the material transfer structure 300, and analyzes and obtains the displacement position information of the first material sheet 101; the visual positioning mechanism 500 is also used to take a photo of the second material sheet on the second material loading platform 202, and analyzes and obtains the second position information of the second material sheet, or takes a photo of the second material sheet after being picked up by the material transfer structure 300 (), and analyzes and obtains the second position information of the second material sheet.
[0035] See also Figures 1 to 3 , the control structure can be centrally installed on the visual positioning mechanism 500, or it can be installed separately as an independent component. It can be selected according to the actual situation and is not limited here. The control structure controls the movement of the material transfer structure 300 according to the first position information or the second position information, so as to release the first sheet 101 and the second sheet at the specified position. For example, the control structure controls the movement of the material transfer structure 300 according to the first position information to release the first sheet 101 on the laminating mold 400, and the control structure controls the movement of the material transfer structure 300 according to the second position information to release the second sheet on the laminating mold 400 and stack it on the first sheet 101. Of course, the second sheet can also be placed on the laminating mold 400 first, and then the first sheet 101 can be placed on the second sheet. Since the first sheet 101 and the second sheet are both positioned by the visual positioning mechanism 500, after the first sheet 101 and the second sheet are released at the specified positions, the visual positioning mechanism 500 can ensure the alignment and positioning accuracy between the two, so that in the subsequent pressing process, the first sheet 101 and the second sheet can be accurately fitted and the yield rate of the fitting can be improved.
[0036] See also Figures 1 to 3It can also be understood that, in the embodiments of the present application, the visual positioning mechanism 500 can also first take a picture of the second sheet to obtain the second position information; after the material transfer structure 300 picks up the first sheet 101, the visual positioning mechanism 500 takes a picture of the first sheet 101 and obtains the first position information. The control structure can obtain the moving path of the material transfer structure 300 according to the first position information and the second position information, thereby controlling the material transfer structure 300 to absorb the first sheet 101 and move it to the second loading platform 202, and controlling the material transfer structure 300 to pre-bond the first sheet 101 and the second sheet at the second loading platform 202. At this time, the first sheet 101 is at least partially bonded to the second sheet, and the control structure then controls the material transfer structure 300 to move the first sheet 101 and the second sheet as a whole from the second loading platform 202 to the pressing mold 400, thereby improving the positioning accuracy of the first sheet 101 and the second sheet, and the final bonding accuracy.
[0037] See also Figures 1 to 3 In some embodiments, the visual positioning mechanism 500 includes a first camera 501 and a second camera 502, wherein two first cameras 501 are arranged at intervals along a first direction, and two second cameras 502 are also arranged at intervals along a second direction, and the first direction and the second direction are orthogonal.
[0038] See also Figures 1 to 3 It can be understood that the first direction is the X direction, and the second direction is the Y direction. The two first cameras 501 take pictures along the X direction to obtain the coordinate information of the first material sheet 101 or the second material sheet, and the two second cameras 502 take pictures along the Y direction to obtain the coordinate information of the first material sheet 101 or the second material sheet. It can also be understood that the first position information or the second position information includes the coordinate information in the X direction and the coordinate information in the Y direction, so that the control structure can control the material moving structure 300 to move along the X direction or the Y direction.
[0039] In some embodiments, the visual positioning mechanism 500 also includes a first adjustment component and a second adjustment component, the first adjustment component is connected to the first camera 501 and adjusts the position of the first camera 501 along the first direction, and the second adjustment component is connected to the second camera 502 and adjusts the position of the second camera 502 along the second direction.
[0040] See also Figures 1 to 3 It can be understood that any first camera 501 is connected to a first adjustment component, and any second camera 502 is connected to a second adjustment component. For first sheets 101 and second sheets of different sizes, the first camera 501 can be moved in the X direction through the first adjustment component to adapt to the size of the first sheet 101 or the second sheet, and the second camera 502 can be moved in the Y direction through the second adjustment component to adapt to the size of the first sheet 101 or the second sheet, thereby improving the convenience of use and the scope of application.
[0041] See also Figures 1 to 3 In some embodiments, the first adjustment component includes a first base 531, a first sliding cover 511 slidably disposed on the first base 531 and connected to the first camera 501, and a first adjustment rod 521, wherein both ends of the first adjustment rod 521 are respectively connected to the first base 531 and the first sliding cover 511, and are used to drive the first sliding cover 511 to slide along the first direction.
[0042] See also Figures 1 to 3 Optionally, the first adjusting rod 521 is a threaded rod, and a first threaded hole is provided on the first sliding cover 511. One end of the first adjusting rod 521 is screwed into the first threaded hole, and the other end of the first adjusting rod 521 is rotatably connected to the first base 531, so that by rotating the first adjusting rod 521, the first sliding cover 511 can be driven to slide relative to the first base 531, thereby adjusting the position of the first camera 501 along the X direction.
[0043] See also Figures 1 to 3 In some embodiments, the second adjustment component includes a second base 532, a second sliding cover 512 slidably disposed on the second base 532 and connected to the second camera 502, and a second adjustment rod 522. The two ends of the second adjustment rod 522 are respectively connected to the second base 532 and the second sliding cover 512, and are used to drive the second sliding cover 512 to slide along the second direction.
[0044] See also Figures 1 to 3 Optionally, the second adjusting rod 522 is a threaded rod, and a second threaded hole is provided on the second sliding cover 512. One end of the second adjusting rod 522 is screwed into the second threaded hole, and the other end of the second adjusting rod 522 is rotatably connected to the second base 532, so that by rotating the second adjusting rod 522, the second sliding cover 512 can be driven to slide relative to the second base 532, thereby adjusting the position of the second camera 502 along the Y direction.
[0045] Optionally, the visual positioning mechanism 500 further includes a positioning plate 506 located above the first loading platform 201 and the second loading platform 202 , and each first base 531 and each second base 532 are mounted on the positioning plate 506 .
[0046] See also Figure 4 In some embodiments, the material transfer structure 300 includes a material transfer gantry 301 and a material transfer robot 305 slidably disposed on the material transfer gantry 301, the material transfer gantry 301 is adjacent to the first loading platform 201 and the second loading platform 202, and the material transfer robot 305 is used to pick up the first material sheet 101 and / or the second material sheet.
[0047] See also Figure 4Optionally, optionally, the material transfer robot 305 picks up the first material sheet 101 from the first loading platform 201 and pre-bonds the first material sheet 101 to the second material sheet, and simultaneously transfers the first material sheet 101 and the second material sheet to the pressing mold 400, or the material transfer robot 305 picks up the first material sheet 101 from the first loading platform 201 or picks up the second material sheet from the second loading platform 202, and releases the first material sheet 101 and the second material sheet at a designated position.
[0048] See also Figure 4 In some embodiments, the material transfer manipulator 305 includes a material transfer arm slidably disposed on the material transfer gantry 301, a lifting mechanism 302 disposed on the material transfer arm, a rotary motor 303 connected to the lifting mechanism 302, and a material transfer adsorption plate 304 connected to the rotary motor 303, and the material transfer adsorption plate 304 is arranged horizontally. The lifting mechanism 302 can be a power mechanism such as a cylinder, a screw assembly, etc. that can drive the rotary motor 303 to move in the vertical direction.
[0049] See also Figures 2 to 4 It can be understood that the first material loading platform 201 and the second material loading platform 202 are located on the same side of the material transfer gantry 301, and the material transfer gantry 301 is provided with a lifting mechanism 302 to drive the material transfer adsorption plate 304 to move up and down. The material transfer adsorption plate 304 can vacuum adsorb the first material sheet 101 or the second material sheet, and after the vacuum is removed, the material transfer adsorption plate 304 can release the first material sheet 101 or the second material sheet. It can be understood that the first position information also includes the angle information of the first material sheet 101, and the second position information also includes the angle information of the second material sheet. The rotating motor 303 can drive the material transfer adsorption plate 304 to rotate in a horizontal plane, and the first material sheet 101 or the second material sheet adsorbed on the material transfer adsorption plate 304 rotates synchronously, so that the first material sheet 101 and the second material sheet can be accurately aligned at an angle to achieve precise overlap and positioning.
[0050] See also Figures 1 to 3 In some embodiments, the first loading platform 201 includes a first supporting plate 221 located below the visual positioning mechanism 500 and a supporting seat 211 for supporting the first supporting plate 221 , and the first material sheet 101 is placed on the upper surface of the first supporting plate 221 .
[0051] Optionally, the first carrying plate 221 can be fixed to an external structural member, such as a machine table, through the support base 211 .
[0052] See also Figures 1 to 3In some embodiments, the second loading platform 202 includes a second loading plate 212 with a limiting groove 203 and a limiting adsorption plate 232 that is at least partially located in the limiting groove 203 and is used to adsorb the second material sheet. The second loading platform 202 can be lowered a predetermined distance relative to the limiting adsorption plate 232 so that the limiting adsorption plate 232 is exposed at the limiting groove 203.
[0053] See also Figures 1 to 3 Optionally, when the material transfer structure 300 moves the first material sheet 101 onto the second material sheet, the second supporting plate 212 descends relative to the limiting adsorption plate 232, so that the limiting adsorption plate 232 supports the second material sheet, and at the same time, the material transfer structure 300 presses the first material sheet 101 against the limiting adsorption plate 232, thereby locally pressing and pre-bonding the first material sheet 101 and the second material sheet.
[0054] See also Figures 1 to 3 Optionally, a plurality of limiting adsorption holes are also provided on the limiting adsorption plate 232, each limiting adsorption hole is connected to a vacuum pump, and adsorbs and positions the second material sheet through the negative pressure principle, and when the material transfer structure 300 moves the second material sheet, the vacuum pump is turned off.
[0055] See also Figures 1 to 3 In some embodiments, the second loading platform 202 further includes a supporting base plate 222 disposed relative to the second supporting plate 212 and a lifting driver 242 connected to the supporting base plate 222 and used for driving the second supporting plate 212 to move up and down.
[0056] See also Figures 1 to 3 Optionally, the second carrier plate 212 can be slidably connected to the carrier bottom plate 222 through a guide post and a guide sleeve, and the lifting driver 242 can be a cylinder. The lifting driver 242 can drive the second carrier plate 212 to reciprocate in the vertical direction, thereby cooperating with the pre-lamination of the first sheet 101 and the second sheet.
[0057] See also Figure 5 The utility model also proposes a curved screen pasting device, which includes a visual positioning loading device 100. The specific structure of the visual positioning loading device 100 refers to the above embodiment. Since the curved screen pasting device adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.
[0058] In some embodiments, the curved screen attaching device further comprises a pressing mold 400 for pressing the first material sheet 101 and the second material sheet. The curved screen attaching device further comprises a frame 600 for installing the visual positioning loading device 100 .
[0059] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims
1. A visual positioning feeding device for feeding a first sheet and a second sheet, characterized in that: The visual positioning feeding device comprises: A positioning structure, comprising a first loading platform for carrying the first material sheet, a second loading platform arranged at a distance from the first loading platform and for carrying the second material sheet, and a visual positioning mechanism located above the first loading platform and the second loading platform; a material transfer structure for picking up the first material sheet from the first material loading platform or picking up the second material sheet from the second material loading platform, and the visual positioning mechanism for taking a photograph to obtain first position information of the first material sheet after being picked up by the material transfer structure; the visual positioning mechanism is also for taking a photograph to obtain second position information of the second material sheet after being located on the second material loading platform or being picked up by the material transfer structure; and A control structure controls the movement of the material moving structure according to the first position information or the second position information.
2. The visual positioning feeding device according to claim 1, characterized in that: The visual positioning mechanism includes a first camera and a second camera, wherein two first cameras are arranged at intervals along a first direction, and two second cameras are also arranged at intervals along a second direction, and the first direction and the second direction are orthogonal.
3. The visual positioning feeding device according to claim 2, characterized in that: The visual positioning mechanism also includes a first adjustment component and a second adjustment component, the first adjustment component is connected to the first camera and adjusts the position of the first camera along the first direction, and the second adjustment component is connected to the second camera and adjusts the position of the second camera along the second direction.
4. The visual positioning feeding device according to claim 3, characterized in that: The first adjustment component includes a first base, a first sliding cover slidably disposed on the first base and connected to the first camera, and a first adjustment rod, wherein two ends of the first adjustment rod are respectively connected to the first base and the first sliding cover, and are used to drive the first sliding cover to slide along a first direction; And / or the second adjustment component includes a second base, a second sliding cover slidably disposed on the second base and connected to the second camera, and a second adjustment rod, wherein the two ends of the second adjustment rod are respectively connected to the second base and the second sliding cover, and are used to drive the second sliding cover to slide along the second direction.
5. The visual positioning feeding device according to any one of claims 1 to 4, characterized in that: The material transfer structure includes a material transfer gantry and a material transfer robot slidably disposed on the material transfer gantry, the material transfer gantry is adjacent to the first material loading platform and the second material loading platform, and the material transfer robot is used to pick up the first material sheet and / or the second material sheet.
6. The visual positioning feeding device according to claim 5, characterized in that: The material transfer robot comprises a material transfer arm slidably arranged on the material transfer gantry, a lifting mechanism arranged on the material transfer arm, a rotating motor connected to the lifting mechanism, and a material transfer adsorption plate connected to the rotating motor.
7. The visual positioning feeding device according to any one of claims 1 to 4, characterized in that: The first loading platform includes a first carrying plate located below the visual positioning mechanism and a supporting seat for supporting the first carrying plate, and the first material sheet is placed on the upper surface of the first carrying plate.
8. The visual positioning feeding device according to any one of claims 1 to 4, characterized in that: The second loading platform includes a second loading plate with a limiting groove and a limiting adsorption plate at least partially located in the limiting groove and used to adsorb the second material sheet. The second loading platform can be lowered a predetermined distance relative to the limiting adsorption plate so that the limiting adsorption plate is exposed at the limiting groove.
9. The visual positioning feeding device according to claim 8, characterized in that: The second loading platform further includes a bearing bottom plate arranged relative to the second bearing plate and a lifting driver connected to the bearing bottom plate and used for driving the second bearing plate to rise and fall.
10. A curved screen device, characterized in that: It comprises the visual positioning loading device as described in any one of claims 1 to 9, and the curved screen pasting equipment also comprises a pressing mold, and the pressing mold is used to press the first material sheet and the second material sheet.