Cover glass turning machine

Abstract

The utility model relates to 3C electronic product cover plate glass manufacturing technical field, especially a kind of cover plate glass turning over machinery, including positioner and positioning adsorption tooling.Positioner is driven to be connected with positioning adsorption tooling, drives its execution circumferential overturning movement.Positioning adsorption tooling includes vacuum adsorption table, limiting component and push mechanism.Vacuum adsorption table is equipped with the adsorption platform of bearing cover plate glass, and adsorption platform is uniformly distributed with multiple adsorption structure and vacuum generation source intercommunication.Limiting component limits glass translation limit position, and push mechanism pushes glass to the positioning position of being in contact with limiting component, both are installed in vacuum adsorption table.Through vacuum adsorption table, limiting component and push mechanism synergy, ensure the positioning accuracy and stability when glass turning over, ensure its position consistency before and after turning over, help subsequent process docking, and mechanization operation improves efficiency, reduces the pollution risk of cover plate glass, it is favorable to promote product quality and production yield.

Description

Technical Field

[0001] This utility model relates to the field of cover glass manufacturing technology for 3C electronic products, and in particular to a cover glass flipping machine. Background Technology

[0002] In the manufacturing process of electronic devices such as display panels and touch screens, cover glass, as a key component, needs to undergo multiple processes including cleaning, coating, inspection, and bonding. Since different processes may require processing both sides of the cover glass, it is often necessary to flip the cover glass during process changes.

[0003] Many years ago, the flipping of cover glass was mostly done manually. This was not only labor-intensive and inefficient, but also prone to causing stains, scratches, or even breakage on the glass surface due to improper operation, which seriously affected product quality and production yield.

[0004] In recent years, some manufacturers have developed assisted flipping machines, which have reduced manual intervention and lowered the labor intensity of workers to some extent, but generally suffer from insufficient positioning accuracy. If the cover glass cannot be accurately positioned before flipping, it is prone to displacement and shaking during the flipping process. The cover glass is also easily damaged by accidental collisions, and it will affect the docking accuracy with subsequent processes.

[0005] Therefore, it is urgent for technical personnel to solve the above problems. Utility Model Content The purpose of this invention is to provide a cover glass flipping machine, which aims to solve the problems of insufficient positioning accuracy of the existing mechanical flipping structure, which causes the cover glass to easily shift and shake during the flipping process, affecting the docking accuracy of subsequent processes, and poor fixing stability.

[0006] This utility model relates to a cover glass flipping machine, including a positioner and a positioning adsorption fixture; the positioner is driven to connect with the positioning adsorption fixture and is used to drive the positioning adsorption fixture to perform circumferential flipping motion, and the flipping angle covers the range of 0 to 180°. The positioning adsorption fixture includes a vacuum adsorption stage, a limiting component, and a pushing mechanism; The vacuum adsorption stage has an adsorption platform for supporting the cover glass. The adsorption platform is formed with an adsorption structure that is connected to the vacuum source; The limiting component is used to limit the translational limit position of the cover glass on the adsorption platform, and the pushing mechanism is used to push the cover glass to the positioning position that abuts against the limiting component. Both are based on the vacuum adsorption platform.

[0007] As a further improvement to the technical solution disclosed in this utility model, the adsorption platform is formed by extending upward from the top wall of the vacuum adsorption stage, and the extension height t is controlled within 0.3 to 0.5 mm.

[0008] As a further improvement to the technical solution disclosed in this utility model, the adsorption structure is composed of multiple adsorption pores; the adsorption pores are distributed in a rectangular array around the vacuum adsorption stage.

[0009] As a further improvement to the technical solution disclosed in this utility model, the bearing area of ​​the adsorption platform is provided with an adhesive layer.

[0010] As a further improvement to the technical solution disclosed in this utility model, the adhesive layer is made of an elastic material and the surface is smoothed; the adhesive layer is penetrated by adsorption holes, forming a buffer between the cover glass and the adsorption platform.

[0011] As a further improvement to the technical solution disclosed in this utility model, the limiting component is composed of a horizontal limiting pin array and a vertical limiting pin array; the horizontal limiting pin array and the vertical limiting pin array intersect perpendicularly and work together to form a positioning space that matches the contour of the cover glass; when the cover glass is pushed by the pushing mechanism to the point where it abuts against both the horizontal limiting pin and the vertical limiting pin, planar positioning is completed.

[0012] As a further improvement of the technical solution disclosed in this utility model, the lateral limiting pin array includes at least one lateral limiting pin that is inserted and fixed along the lateral edge of the vacuum adsorption stage, for limiting the translational limit position of the cover glass in the lateral direction; the longitudinal limiting pin array includes at least one longitudinal limiting pin that is inserted and fixed along the longitudinal edge of the vacuum adsorption stage, for limiting the translational limit position of the cover glass in the longitudinal direction.

[0013] As a further improvement of the technical solution disclosed in this utility model, the pushing mechanism is composed of at least one lateral pushing sub-mechanism and at least one longitudinal pushing sub-mechanism; the pushing directions of the lateral pushing sub-mechanism and the longitudinal pushing sub-mechanism are perpendicular to each other, and the end points of their pushing strokes are respectively adapted to the lateral limiting boundary and the longitudinal limiting boundary of the limiting component, and through coordinated action, the cover glass is pushed from the initial placement position to the positioning position that abuts against the limiting component.

[0014] As a further improvement of the technical solution disclosed in this utility model, the lateral pushing sub-mechanism includes a lateral driving component and a lateral pushing component; the lateral driving component is installed at the bottom of the vacuum adsorption stage, and its output end is connected to the lateral pushing component for driving the lateral pushing component to reciprocate along the lateral direction of the vacuum adsorption stage; the longitudinal pushing sub-mechanism includes a longitudinal driving component and a longitudinal pushing component; the longitudinal driving component is installed at the bottom of the vacuum adsorption stage, and its output end is connected to the longitudinal pushing component for driving the longitudinal pushing component to reciprocate along the longitudinal direction of the adsorption platform; the vacuum adsorption stage has a lateral clearance notch adapted to the lateral pushing component and a longitudinal clearance notch adapted to the longitudinal pushing component.

[0015] In practical applications, the cover glass flipping machine disclosed in this utility model can achieve at least the following beneficial technical effects, specifically: 1) Through the coordinated action of the vacuum adsorption stage, limiting components, and pushing mechanism, the positioning accuracy and stability during the cover glass flipping process are effectively ensured. The pushing mechanism precisely pushes the cover glass to the positioning position that abuts against the limiting components, and the multiple adsorption structures evenly distributed on the adsorption platform can form a uniform and reliable adsorption force, which can effectively ensure the consistency of the glass position before and after flipping, and provide a guarantee for the precise docking of subsequent processes; 2) The circumferential flipping range of 0 to 180° can meet the glass flipping requirements of different processes. Mechanized operation not only reduces and improves production efficiency, but also reduces the risk of glass contamination caused by human touch, which helps to improve product quality and production yield. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional schematic diagram of the cover glass flipping machine disclosed in this utility model from one perspective.

[0018] Figure 2 This is a three-dimensional schematic diagram from another perspective of the cover glass flipping machine disclosed in this utility model.

[0019] Figure 3 This is a three-dimensional schematic diagram of the positioning and adsorption fixture in the cover glass flipping machine disclosed in this utility model.

[0020] Figure 4This is also a three-dimensional schematic diagram of the positioning and adsorption fixture in the cover glass flipping machine disclosed in this utility model (with the vacuum adsorption stage hidden).

[0021] Figure 5 This is a three-dimensional schematic diagram of the positioning and adsorption fixture in the cover glass flipping machine disclosed in this utility model from another perspective.

[0022] Figure 6 This is a three-dimensional schematic diagram of the vacuum adsorption stage in the cover glass flipping machine disclosed in this utility model.

[0023] 1-Positioner; 2-Positioning adsorption fixture; 21-Vacuum adsorption stage; 211-Adsorption platform; 2111-Adsorption hole; 212-Transverse clearance notch; 213-Vertical clearance notch; 22-Limiting component; 221-Transverse limiting pin array; 2211-Transverse limiting pin; 222-Vertical limiting pin array; 2221-Vertical limiting pin; 23-Pushing mechanism; 231-Transverse pushing sub-mechanism; 2311-Transverse cylinder; 2312-Transverse pusher; 232-Vertical pushing sub-mechanism; 2321-Vertical cylinder; 2322-Vertical pusher. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to specific embodiments. Figure 1 , Figure 2 The diagrams show two different perspectives of the cover glass flipping machine disclosed in this invention. It can be seen that it mainly consists of a positioner 1 and a positioning and adsorption fixture 2. The positioner 1 is driven by the positioning and adsorption fixture 2 to perform circumferential flipping motion, with the flipping angle covering a range of 0–180° to meet the flipping requirements of the cover glass during different process transitions. The positioner 1 is preferably driven by a servo motor and equipped with a planetary gear reducer to ensure that the angle control error of the positioning and adsorption fixture 2 within the 0–180° flipping range does not exceed ±0.5°.

[0025] like Figure 3 As shown, the positioning adsorption fixture 2 mainly consists of a vacuum adsorption stage 21, a limiting component 22, and a pushing mechanism 23. The top surface of the vacuum adsorption stage 21 is precision machined to form a flat adsorption platform 211 for stably supporting the cover glass. Several adsorption holes 2111 (e.g., [missing information]) are evenly distributed on the adsorption platform 211, communicating with a vacuum source. Figure 6 (As shown in the diagram). When the vacuum generator is activated, a uniformly distributed negative pressure is formed between the cover glass and the adsorption platform 211, thereby firmly adsorbing the cover glass onto the adsorption platform 211 and preventing displacement caused by inertia or vibration during the flipping process.

[0026] It is worth noting that the edge of the adsorption platform 211 is slightly higher than the base plane of the vacuum adsorption stage 21, and the protrusion height is controlled within 0.3 to 0.5 mm. This provides a slight physical constraint for the cover glass, thereby ensuring its flatness after placement.

[0027] like Figure 3 As shown, the limiting component 22 plays a crucial role in the planar positioning of the cover glass, and is composed of a lateral limiting pin array 221 and a longitudinal limiting pin array 222. The lateral limiting pin array 221 and the longitudinal limiting pin array 222 intersect perpendicularly and work together to form a positioning space that conforms to the contour of the cover glass.

[0028] As shown in Figure 3, both the lateral limiting pin array 221 and the longitudinal limiting pin array 222 adopt a double-pin design to improve positioning stability. Specifically, the lateral limiting pin array 221 includes two lateral limiting pins 2211, which are distributed at intervals along the lateral edge of the vacuum adsorption stage 21 and fixed by insertion, together forming a limiting boundary in the lateral direction to accurately limit the translation limit of the cover glass in this direction; the longitudinal limiting pin array 222 includes two longitudinal limiting pins 2221, which are distributed at intervals along the longitudinal edge of the vacuum adsorption stage 21 and fixed by insertion, forming a limiting boundary in the longitudinal direction, thereby reliably limiting the translation range of the cover glass in the longitudinal direction. Thanks to the double-pin design, the slight deflection of the cover glass caused by uneven local force is effectively avoided, ensuring that after the cover glass is pushed into place by the pushing mechanism 23, its edge can form a stable line contact with the transverse limiting pin 2211 and the longitudinal limiting pin 2221, ensuring that the initial placement position of each cover glass is highly consistent, which lays a good foundation for subsequent vacuum adsorption fixation.

[0029] The pushing mechanism 23, as the active positioning actuator, works in coordination with the limiting component 22. For example... Figures 3-5 As shown, the pushing mechanism 23 consists of one lateral pushing sub-mechanism 231 and two longitudinal pushing sub-mechanisms 232.

[0030] The lateral pushing sub-mechanism 231 includes a lateral cylinder 2311 and a lateral pusher 2312. The lateral cylinder 2311 is mounted on the bottom wall of the vacuum adsorption stage 21, and its output end is connected to the lateral pusher 2312. The vacuum adsorption stage 21 has a lateral clearance notch 212 corresponding to the position of the lateral pusher 2312. The length and width of the lateral clearance notch 212 are adapted to the size of the lateral pusher 2312 to ensure that the lateral pusher 2312 will not collide or interfere with the vacuum adsorption stage 21 when performing reciprocating movement. When the lateral drive 2311 is activated, it drives the lateral pusher 2312 to move smoothly along the lateral direction of the vacuum adsorption stage 21, and the end point of the pushing stroke is adapted to the limiting boundary of the lateral limiting pin array 221. The longitudinal pushing sub-mechanism 232 includes a longitudinal cylinder 2321 and a longitudinal pusher 2322. The output end of the longitudinal cylinder 2321 is connected to the longitudinal pusher 2322 via a transmission. The design structure of the longitudinal pusher 2322 is similar to that of the transverse pusher 2312. A longitudinal clearance notch 213 adapted to the longitudinal pusher 2322 is provided on the vacuum adsorption stage 21 to provide space for the movement of the longitudinal pusher 2322. The pushing directions of the two longitudinal pushing sub-mechanisms 232 are consistent, and the end point of the pushing stroke is adapted to the limiting boundary of the longitudinal limiting pin array 222. During operation, after the cover glass is placed on the adsorption platform 211, the lateral pushing sub-mechanism 231 and two longitudinal pushing sub-mechanisms 232 work together. The lateral pushing sub-mechanism 231 pushes the cover glass laterally, bringing it closer to the lateral limiting pin array 221; the two longitudinal pushing sub-mechanisms 232 simultaneously push the cover glass from both longitudinal sides, bringing it closer to the longitudinal limiting pin array 222, until the cover glass is precisely and smoothly pushed to the positioning position that abuts against the lateral limiting pin array 221 and the longitudinal limiting pin array 222, preparing for subsequent vacuum adsorption fixing and flipping actions.

[0031] It should also be noted that the load-bearing area of ​​the adsorption platform 211 is equipped with an adhesive layer (not shown in the figure). In terms of material selection, the adhesive layer is made of high-quality elastic materials, such as silicone or nitrile rubber. When the cover glass is placed or pushed onto the adsorption platform 211, the adhesive layer absorbs the impact force through its own deformation, preventing the cover glass from directly colliding with the hard surface of the adsorption platform 211 and causing microcracks or damage. At the same time, the properties of the elastic material allow the adhesive layer to fit tightly against the surface of the cover glass, ensuring good contact even if the cover glass has minor unevenness, thus enhancing the sealing performance during vacuum adsorption. Furthermore, the surface of the coating layer must undergo a fine smoothing process to ensure that its surface roughness is within the allowable range. When the cover glass comes into contact with the coating layer, it can significantly reduce the frictional resistance between the two, preventing scratches caused by friction during the pushing mechanism 23 pushing the cover glass or the process of the cover glass being adsorbed and fixed, which would affect the optical performance and surface quality of the glass, especially for some cover glasses whose surfaces have undergone precision treatment such as coating. It is worth noting that the adhesive layer is penetrated by the adsorption pores 2111, forming a through-structure that corresponds one-to-one with each adsorption pore 2111. This ensures, on the one hand, that the vacuum adsorption pathway remains unobstructed, allowing negative pressure to act smoothly on the cover glass surface for secure adsorption; on the other hand, the adhesive layer provides an effective buffer between the cover glass and the adsorption platform 211. During the flipping process of the cover glass, the adhesive layer applies a uniform constraint force to the cover glass through elastic deformation, which, combined with the vacuum adsorption force, further prevents the cover glass from shaking or shifting, providing a double guarantee for the stable flipping of the cover glass.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cover glass flipping machine, comprising a positioner and a positioning and adsorption fixture; the positioner is driven to connect with the positioning and adsorption fixture, and is used to drive the positioning and adsorption fixture to perform a circumferential flipping motion, wherein the flipping angle covers a range of 0–180°, characterized in that, The positioning adsorption fixture includes a vacuum adsorption stage, a limiting component, and a pushing mechanism. The vacuum adsorption stage is formed with an adsorption platform for supporting the cover glass. The adsorption platform is formed with an adsorption structure that is connected to a vacuum source. The limiting component is used to limit the translational limit position of the cover glass on the adsorption platform, and the pushing mechanism is used to push the cover glass to a positioning position that abuts against the limiting component, and both are based on the vacuum adsorption stage.

2. The cover glass flipping machine according to claim 1, characterized in that, The adsorption platform is formed by extending upward from the top wall of the vacuum adsorption stage, and the extension height t is controlled within 0.3 to 0.5 mm.

3. The cover glass flipping machine according to claim 2, characterized in that, The adsorption structure consists of multiple adsorption pores; the adsorption pores are arranged in a rectangular array around the vacuum adsorption stage.

4. The cover glass flipping machine according to claim 3, characterized in that, The bearing area of ​​the adsorption platform is covered with an adhesive layer.

5. The cover glass flipping machine according to claim 4, characterized in that, The coating layer is made of an elastic material and has a smooth surface; the coating layer is penetrated by the adsorption holes, forming a buffer between the cover glass and the adsorption platform.

6. The cover glass flipping machine according to claim 1, characterized in that, The limiting component consists of a lateral limiting pin array and a longitudinal limiting pin array; the lateral limiting pin array and the longitudinal limiting pin array intersect perpendicularly and work together to form a positioning space that matches the contour of the cover glass; when the cover glass is pushed by the pushing mechanism to a point where it abuts against both the lateral limiting pins and the longitudinal limiting pins, planar positioning is completed.

7. The cover glass flipping machine according to claim 6, characterized in that, The lateral limiting pin array includes at least one lateral limiting pin that is inserted and fixed along the lateral edge of the vacuum adsorption stage, used to limit the translational limit position of the cover glass in the lateral direction; the longitudinal limiting pin array includes at least one longitudinal limiting pin that is inserted and fixed along the longitudinal edge of the vacuum adsorption stage, used to limit the translational limit position of the cover glass in the longitudinal direction.

8. The cover glass flipping machine according to claim 1, characterized in that, The pushing mechanism consists of at least one lateral pushing sub-mechanism and at least one longitudinal pushing sub-mechanism; the pushing directions of the lateral pushing sub-mechanism and the longitudinal pushing sub-mechanism are perpendicular to each other, and the end points of their pushing strokes are respectively adapted to the lateral limiting boundary and the longitudinal limiting boundary of the limiting component, and through coordinated action, the cover glass is pushed from the initial placement position to the positioning position that abuts against the limiting component.

9. The cover glass flipping machine according to claim 8, characterized in that, The lateral pushing sub-mechanism includes a lateral driving component and a lateral pushing component; the lateral driving component is installed at the bottom of the vacuum adsorption stage, and its output end is drivenly connected to the lateral pushing component, for driving the lateral pushing component to reciprocate along the lateral direction of the vacuum adsorption stage; the longitudinal pushing sub-mechanism includes a longitudinal driving component and a longitudinal pushing component; the longitudinal driving component is installed at the bottom of the vacuum adsorption stage, and its output end is drivenly connected to the longitudinal pushing component, for driving the longitudinal pushing component to reciprocate along the longitudinal direction of the adsorption stage; the vacuum adsorption stage has a lateral clearance notch adapted to the lateral pushing component and a longitudinal clearance notch adapted to the longitudinal pushing component.

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