Tempered film taking method

Abstract

The tempered film taking method comprises the steps that S1, preparation work is conducted, specifically, a tempered film containing tool, a lifting shaft fixing structure, a lifting structure installed on the lifting shaft fixing structure and a vacuum suction cup type taking structure fixedly connected with the lifting structure at a preset inclination angle alpha are provided, and the taking structure is divided into an A-B area, a B-C area and a C-D area, the material taking structure is integrally formed by adopting a material with both toughness and strength, and a plurality of tempered film main bodies are stacked on the placing tool; s2, segmented adsorption: controlling a lifting structure to drive the material taking structure to descend at a constant speed at a preset speed, so that suckers in a C-D area of the material taking structure sequentially adsorb the uppermost tempered film main body. According to the method, single-piece accurate material distribution can be achieved, the electrostatic adhesion influence is eliminated, and therefore the material distribution efficiency and accuracy are improved.

Description

Technical Field

[0001] This invention relates to the field of tempered glass film material handling technology, and more particularly to a tempered glass film material handling method. Background Technology

[0002] In the tempered glass screen protector manufacturing industry, with the widespread use of smartphones, tablets, and other electronic devices, the market demand for tempered glass screen protectors, as a core protective accessory, continues to rise, driving the rapid transformation of production processes towards higher efficiency and automation. The automatic material sorting process, as a core pre-process in automated tempered glass screen protector production lines, plays a crucial role in separating stacked incoming materials into individual film sheets, ensuring smooth transitions to subsequent precision cutting, surface coating, and quality inspection processes. Its sorting accuracy and efficiency directly determine the overall production line's capacity and product qualification rate.

[0003] Currently, tempered glass film is commonly stored in a stacked manner upon arrival in the industry. While this method saves storage space and facilitates bulk transportation, it is highly susceptible to electrostatic adsorption problems due to the inherent material properties and manufacturing processes of tempered glass. The core substrate of tempered glass is special glass, which accumulates a certain amount of charge on its surface after tempering. Furthermore, some products are coated with oleophobic or scratch-resistant films to enhance protective performance or adhesion. These coatings are often made of insulating materials, further exacerbating the charge retention effect. In a stacked state, the close contact between the tempered glass films generates "contact charging," and the slight handling and vibration before subsequent material separation causes "separation charging." This dual effect prevents the rapid dissipation of electrostatic charges on the film surface, resulting in a stable electrostatic field.

[0004] During the automated material dispensing process, the adsorption force generated by this electrostatic field can cause adjacent tempered glass films to stick together tightly, typically manifesting as 2-3 films adhering to each other and unable to separate naturally. This adhesion problem directly leads to misjudgments and malfunctions in the dispensing equipment: on the one hand, the dispensing mechanism (such as traditional suction cups or grippers) can easily grab multiple adhered films at once, causing quality defects such as overlapping film cutting and film misalignment in subsequent processing steps, significantly increasing the product scrap rate; on the other hand, the adhered films may also get stuck in the dispensing channel, causing equipment shutdown and requiring manual intervention for troubleshooting and cleaning. This not only interrupts the production cycle and increases labor costs, but may also cause scratches on the films due to improper manual operation, further increasing losses.

[0005] It is worth noting that there is currently no mature and effective solution on the market to address this widespread industry pain point. Some companies have tried conventional static elimination methods such as using ion blowers to remove static electricity and grounding equipment to conduct static electricity, but the effects in practical applications are minimal: the ions generated by the ion blowers cannot penetrate the gaps between the tightly stacked membranes and cannot eliminate static electricity on the membrane contact surfaces; moreover, the insulating properties of the tempered glass substrate and surface coating make it difficult for grounding to effectively discharge the charge from the membrane surface. In addition, the structural design of existing material dispensing equipment is mostly general-purpose gripping and has not been adapted and optimized for the electrostatic adsorption characteristics of tempered glass, thus failing to solve the adhesion problem from the material dispensing mechanism.

[0006] Therefore, a method for extracting tempered glass film needs to be designed to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tempered glass film feeding method. This method enables precise single-sheet feeding, eliminates the effects of electrostatic adhesion, and thus improves feeding efficiency and accuracy.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A method for obtaining tempered glass film includes the following steps: S1: Preparation: Provide a tempered glass film placement fixture, a lifting shaft fixing structure, a lifting structure installed on the lifting shaft fixing structure, and a vacuum suction cup type material picking structure fixedly connected to the lifting structure at a preset tilt angle α. The material picking structure is divided into three areas: AB, BC, and CD. The material picking structure is integrally formed using a material with both toughness and strength. Multiple tempered glass film bodies are stacked on the placement fixture. S2: Segmented adsorption: The lifting structure is controlled to drive the material picking structure to descend at a preset speed, so that the suction cups in the CD area of ​​the material picking structure adsorb the uppermost tempered film body in sequence. The suction cup at D adsorbs first, and the suction cup at C adsorbs after a preset time interval, so that the tempered film body adsorbed in the CD area is in a curved shape. S3: Initial lifting: After adsorption is completed, control the lifting structure to drive the material taking structure to rise at a predetermined speed and distance at a predetermined speed. S4: Extrusion Separation: Control the lifting structure to drive the material taking structure to descend at a preset speed again at a uniform speed, so that the AB area of ​​the material taking structure comes into contact with the remaining tempered film body in the tempered film placement fixture and produces tough deformation, causing the multiple tempered film bodies that are electrostatically adsorbed to separate due to stress differences, and the lower tempered film body falls back to the tempered film placement fixture. S5: Material Retrieval Verification: Control the lifting structure to drive the material retrieval structure to move up and down at a preset speed for a preset number of times, with a single movement distance of a preset distance, to complete the retrieval of a single tempered film body.

[0009] Preferably, the preset speed is 0.1 mm / s.

[0010] Preferably, the preset time in S2 is 0.3s.

[0011] Preferably, the preset distance is 10mm.

[0012] Preferably, the preset number of times in S5 is 2-3 times.

[0013] Preferably, the main material of the material taking structure is 6061 aluminum alloy.

[0014] Preferably, the lifting structure achieves lifting and lowering through a motor and a lead screw drive.

[0015] The present invention has the following beneficial effects: Compared with the prior art, the present invention precisely eliminates the electrostatic adsorption and adhesion problem in the tempered film dispensing process by combining segmented adsorption, extrusion deformation separation, and multiple verification lifting steps, which significantly improves the dispensing accuracy and effectively avoids the situation of multiple films being dispensed at the same time. Compared with existing technologies, the material feeding structure is made of tough material in one piece and designed with segmented areas. Combined with the precise speed control of the lifting structure, it can adapt to the material feeding needs of tempered film of various specifications and materials. It has strong versatility and does not require the separate design of material feeding equipment for different tempered film. Compared with existing technologies, the entire material sorting process does not require additional antistatic equipment. Adhesion can be broken up simply through the movement of mechanical structures, which reduces equipment investment costs. Moreover, the operation process is simple and easy to integrate into existing automated production lines, significantly improving production efficiency. Compared with existing technologies, the motion parameters of the lifting structure and the material handling structure can be precisely controlled, ensuring the stability and consistency of the material distribution process and further improving the overall quality of tempered film processing. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a tempered glass film feeding structure proposed in this invention; Figure 2 This is a schematic diagram of the partitioning of the material handling structure.

[0017] In the diagram: 1. Lifting shaft fixing structure, 2. Lifting structure, 3. Material handling structure, 4. Tempered glass film body, 5. Placement fixture. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Reference Figure 1-2 A method for obtaining tempered glass film includes the following steps: S1: Preparation: Provide tempered glass film placement fixture 5, lifting shaft fixing structure 1, lifting structure 2 installed on lifting shaft fixing structure, lifting structure 2 achieves lifting through motor and screw drive, and vacuum suction cup type material picking structure 3 fixedly connected to the lifting structure at a preset tilt angle α. The main material of material picking structure 3 is 6061 aluminum alloy, which has a certain toughness while ensuring strength. The material picking structure is divided into three areas: AB, BC, and CD. The material picking structure is integrally formed with a material that combines toughness and strength. Multiple tempered glass film bodies 4 are stacked on placement fixture 5. S2: Segmented adsorption: Control the lifting structure 2 to drive the material picking structure 3 to descend at a preset speed, so that the suction cups in the C-D area of ​​the material picking structure 3 sequentially adsorb the uppermost tempered film body 4. The suction cup at D adsorbs first, and the suction cup at C adsorbs after a preset time interval, so that the tempered film body 4 adsorbed in the CD area is in a curved shape. S3: Initial lifting: After adsorption is completed, control the lifting structure 2 to drive the material taking structure 3 to rise at a preset speed and a preset distance. S4: Extrusion Separation: Control the lifting structure 2 to drive the material taking structure 3 to descend at a preset speed again at a uniform speed, so that the AB area of ​​the material taking structure 3 and the remaining tempered film body 4 in the tempered film placement fixture 5 are in contact with the force and produce tough deformation, causing the multiple tempered film bodies 4 that are electrostatically adsorbed to separate due to stress differences, and the lower tempered film body 4 falls back to the tempered film placement fixture 5. S5: Material Retrieval Verification: Control the lifting structure 2 to drive the material retrieval structure 3 to move up and down reciprocally a preset number of times at a preset speed, with a single movement distance of a preset distance, to complete the retrieval of a single tempered film body 4.

[0022] The preset speed is 0.1 mm / s, the preset time is 0.3 s, the preset distance is 10 mm, and the preset number of times is 2-3.

[0023] The structure used in this tempered glass film distribution method includes: a tempered glass film placement fixture 5, a lifting shaft fixing structure 1, a motor-driven lifting structure 2, and a vacuum suction cup type material picking structure 3 that is fixedly connected to the lifting structure at a 15° inclination angle (α=15°). The material picking structure is made of 6061 aluminum alloy in one piece and is divided into three areas: AB, BC, and CD. Each area is equipped with a vacuum suction cup, and the structural design of the AB area gives it good toughness and deformation ability.

[0024] The specific material separation steps of this invention are as follows: Preparation: Neatly stack 50 tempered glass film bodies 4 to be sorted on the tempered glass film placement fixture 5. Check the motor operation status of the lifting structure 2 and the vacuum adsorption pressure of the material picking structure 3 to ensure that all components are firmly connected.

[0025] Segmented adsorption: Start the motor of the lifting structure 2 and control the lifting structure 2 to drive the material picking structure 3 to descend at a speed of 0.1mm / s. When the suction cup at point D of the material picking structure 3 contacts the surface of the uppermost tempered glass film body 4, the vacuum adsorption of the suction cup at point D is activated. After adsorption continues for 0.3s, the vacuum adsorption of the suction cup at point C is activated, so that the E area of ​​the tempered glass film body 4 (corresponding to the adsorption position of the CD suction cup) is firmly adsorbed onto the material picking structure 3.

[0026] Initial lifting: After the suction cup at point C has finished adsorbing, the lifting structure 2 is controlled to drive the material picking structure 3 to rise at a speed of 0.1 mm / s for 10 mm. At this time, it is observed that some tempered film bodies 4 may show slight signs of adhesion due to static electricity.

[0027] Extrusion Separation: The lifting structure 2 is controlled to descend at a constant speed of 0.1 mm / s again, so that the AB area of ​​the material taking structure 3 comes into contact with the remaining tempered film body 4 on the tempered film placement fixture 5 and produces slight tough deformation. The F area of ​​the uppermost tempered film body 4 bends with the deformation of the material taking structure. The lower layer of the bonded tempered film body 4 gradually returns to horizontal under its own internal stress and finally separates from the upper tempered film body 4 and falls back to the tempered film placement fixture 5.

[0028] Verification of material handling: Control the lifting structure 2 to drive the material handling structure 3 to move up and down twice at a speed of 0.1mm / s. The distance of each rise and fall is 10mm. No new adhesion was found during the reciprocating motion. Finally, control the lifting structure 2 to drive the material handling structure 3 with a single tempered film adsorbed to rise to the preset transfer position, completing one material handling operation.

[0029] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method of dispensing a tempered film, the method comprising: The method comprises the following steps: S1: preparation: provide tempering film placement tool (5), lifting shaft fixing structure (1), lifting structure (2) installed on the lifting shaft fixing structure, and vacuum chuck type material taking structure (3) fixedly connected with the lifting structure at a preset inclination angle α, the material taking structure is divided into A-B, B-C, C-D three areas, and the material taking structure is integrally formed with a material having both toughness and strength, a plurality of tempered film bodies (4) are stacked on the placement tool (5); S2: sectional adsorption: control the lifting structure (2) to drive the material taking structure (3) to uniformly descend at a preset speed, so that the chucks of the C-D area of the material taking structure (3) adsorb the uppermost tempered film body (4) in sequence, wherein the chuck at D is adsorbed first, and the chuck at C is adsorbed after a preset time interval, so that the tempered film body (4) adsorbed by the C-D area presents a curved shape; S3: preliminary lifting: after adsorption, control the lifting structure (2) to drive the material taking structure (3) to uniformly ascend by a preset distance at the preset speed; S4: extrusion separation: control the lifting structure (2) to drive the material taking structure (3) to uniformly descend again at a preset speed, so that the A-B area of the material taking structure (3) is in stress contact with the remaining tempered film body (4) in the tempered film placement tool (5) and produces a toughness deformation, so as to separate the multiple tempered film bodies (4) adsorbed by static electricity due to stress difference, and the lower tempered film body (4) falls back to the tempered film placement tool (5); S5: check and take material: control the lifting structure (2) to drive the material taking structure (3) to reciprocate up and down at a preset speed for a preset number of times, and the single motion distance is a preset distance, so as to complete the taking of a single tempered film body (4).

2. The tempered film taking method according to claim 1, characterized in that: The preset speed is 0.1 mm / s.

3. The method of claim 2, wherein: The preset time in S2 is 0.3 s.

4. The tempered film taking method according to claim 1, wherein: The preset distance is 10 mm.

5. The tempered film taking method according to claim 1, wherein: The preset number of times in S5 is 2-3 times.

6. The method of claim 4, wherein: The main material of the material taking structure (3) is 6061 aluminum alloy.

7. The tempered film taking method according to claim 1, wherein: The lifting structure (2) is lifted by a motor and a screw rod transmission.

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