Touch screen laminating device and process

Abstract

The present invention relates to the field of touch screen coating technology, and discloses a touch screen coating device, comprising a base for supporting the touch screen, a movable frame for placing the screen film movably mounted on the base, a plurality of springs disposed between the movable frame and the base, a support fixedly mounted on the base, a processing box fixedly mounted on the upper end of the support, an air pump fixedly mounted on the upper end of the processing box, two baffles fixedly mounted on the lower end of the processing box and an elastic airbag located between the two baffles, the elastic airbag located above the movable frame, a first connecting groove and a second connecting groove formed at the upper end of the processing box, an air outlet of the air pump communicating with the elastic airbag via the first connecting groove, and one end of the second connecting groove extending through the upper end of the processing box. The present invention aims to address the problem that existing movable pressure rollers typically perform a one-way rolling motion from one end of the touch screen to achieve a contact fit, resulting in insufficient rolling efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of touch screen coating, and in particular relates to a touch screen coating device and process. Background Art

[0002] A touch screen, also known as a "touch screen" or "touch panel", is an inductive liquid crystal display device that can receive input signals such as contacts. During long-term use, in order to reduce wear on the touch screen's outer surface and ensure display clarity, the touch screen is generally covered with a film before leaving the factory to improve its own protection.

[0003] At present, when enterprises produce and process touch screens, they often use corresponding laminating equipment to complete the film laminating operation on the touch screen. During actual use, the existing laminating equipment will be equipped with a corresponding movable pressing roller structure inside itself. When the film is laminated to the touch screen, the movable pressing roller can press down between the film and the touch screen, so that the film can be tightly laminated to the outer surface of the touch screen. However, the existing movable pressing roller usually performs a unidirectional rolling movement from one end of the touch screen to make it fit. Such rolling processing efficiency is not high enough, and the pressing roller is in direct contact with the film, which can easily scratch the film and affect the lamination.

[0004] Based on this, the present invention proposes a touch screen coating device and process to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that the existing movable pressing roller usually performs unidirectional rolling from one end of the touch screen to make it fit, and the efficiency of such rolling processing is not high enough.

[0006] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0007] The cam is secured to the base with a secure connection to the touch screen, and the cam is secured to the base with a secure connection to the touch screen.

[0008] It is further defined that the rolling mechanism includes a movable plate, a bidirectional threaded rod, two movable seats, two rotating pressure rollers, and a driving member that drives the movable plate to rise and fall, the movable plate is movably installed between the processing box and the elastic airbag, the lower end of the movable plate is provided with a mounting slot, the bidirectional threaded rod is rotatably installed in the mounting slot, the movable plate is provided with a motor that drives the bidirectional threaded rod to rotate, the two movable seats are threadedly connected to the bidirectional threaded rod, when the bidirectional threaded rod rotates, the two movable seats move toward or away from each other, the two rotating pressure rollers are respectively rotatably installed at the lower ends of the two movable seats, and the driving member is provided inside the processing box. With such a structural design, the driving member pushes the movable plate downward until the lower ends of the two rotating pressure rollers are in close contact with the elastic airbag and generate an extrusion force on the elastic airbag, at which time the motor drives the bidirectional threaded rod to rotate so that the two rotating pressure rollers move away from each other, thereby squeezing out the air between the screen film and the touch screen, avoiding the problem of bubbles generated after lamination, which affects the use of the touch screen.

[0009] The cam is connected to the airbag via a third solenoid valve, and the cam is connected to the airbag via a third solenoid valve. With this structural design, when the first solenoid valve and the second solenoid valve are closed and the third solenoid valve is opened, the air pump will work to introduce air into the cavity of the fixed block, driving the airbag to expand and pushing the movable column downward. At this time, the first compression spring is compressed and the movable plate moves downward, so that the rolling mechanism reaches the working position. When the work is completed, the third solenoid valve and the second solenoid valve are opened, and the air in the cavity of the fixed block moves outward under the action of air pressure, driving the airbag to contract, and the winding wheel will drive the airbag connecting section to rewind. The first compression spring generates an elastic restoring force to push the movable column upward, driving the movable plate and the movable seat to reset.

[0010] The movable seat is further defined as having a mounting opening at the lower end, a transfer block movably mounted within the mounting opening, a bearing disposed on the transfer block, the transfer block being rotatably connected to the end of the rotating pressure roller via the bearing, a limit rod fixedly mounted on the transfer block, the limit rod movably plugged into the movable seat, a second compression spring sleeved between the transfer block and the mounting opening wall, a pressure sensor disposed at the end of the second compression spring closest to the mounting opening wall. With this structural design, the second compression spring generates an elastic force on the transfer block, and the transfer block moves vertically downward under the limiting action of the limit rod, allowing the rotating pressure roller to adhere closely to the inner wall of the elastic airbag, making it suitable for touch screens of different structures.

[0011] Furthermore, a limit slot is defined at the lower end of the movable plate, a limit block is fixedly mounted at the upper end of the movable seat, and the limit block is movably mounted within the limit slot. With this structural design, the limit block and the limit slot cooperate to limit the movement of the movable plate, thereby making the rolling action of the rolling mechanism more stable.

[0012] Furthermore, an anti-slip strip is fixedly mounted on one side of the middle portion of the elastic airbag near the movable frame. With this structural design, when the elastic airbag expands, the anti-slip strip first contacts the screen film, pressing the screen film downward while also stably bringing the screen film onto the touch screen to complete the coating.

[0013] A coating process for a touch screen coating device comprises the following steps:

[0014] S1, placing the touch screen to be coated on the upper end of the base, and then spreading the screen film flat on the movable frame;

[0015] S2: Open the first solenoid valve to connect the first connecting groove, and the air pump starts to deliver air into the processing box, causing the elastic airbag to expand under the action of air pressure. Under the restraint of the baffle, the elastic airbag expands in a certain direction, and the anti-slip strip at the lower end first contacts the screen film, and then pushes the screen film to adhere to the touch screen. As the elastic airbag expands, it gradually pushes the entire screen film onto the touch screen, and the screen film is initially attached.

[0016] S3: Close the first solenoid valve, closing the first connecting groove. The elastic airbag remains inflated and exerts a squeezing force on the screen film, causing it to adhere to the touch screen. Open the third solenoid valve, allowing the air pump to pump air into the cavity of the fixed block, driving the airbag to expand and pushing the movable column downward until the rotating pressure roller adheres to the inner wall of the elastic airbag, squeezing the second compression spring. The pressure detected by the pressure sensor reaches the set value, and the third solenoid valve and air pump are closed.

[0017] S4: The motor on the movable plate starts to work, driving the bidirectional threaded rod to rotate, thereby driving the two movable seats to move in opposite directions, so that the rotating pressure roller moves from the middle to the sides. The elastic airbag transmits the force to the screen film, squeezing out the air between the screen film and the touch screen;

[0018] S5. After the screen film is pasted, the motor works again, driving the bidirectional threaded rod to rotate, so that the two movable seats move toward each other to the initial position, the second solenoid valve, the second solenoid valve and the third solenoid valve are all opened, the air between the elastic airbag and the processing box and the air in the cavity of the fixed block are all released, the elastic airbag and the driving airbag are both contracted, and when the driving airbag contracts, the connecting section is wound onto the winding wheel, and the first compression spring generates an elastic restoring force on the movable column, thereby driving the movable plate to return to the initial position, which is convenient for the next use.

[0019] The invention adopting the above technical solution has the following advantages:

[0020] 1. The present invention uses an air pump in conjunction with an elastic airbag, which can be directionally expanded under the action of a baffle to bring the screen film on the movable frame to the touch screen. The rolling mechanism can squeeze out the air between the screen film and the touch screen from the middle to both ends, thereby improving the laminating efficiency of the laminating device.

[0021] 2. In the present invention, the driving member drives the movable plate to move downward until the rotating pressure roller fits against the inner wall of the elastic airbag, the second compression spring is squeezed, the pressure detected by the pressure sensor reaches the set value, the motor works, and drives the bidirectional threaded rod to rotate. With the cooperation of the limit block and the limit groove, the movable seat moves toward or away from each other, and the air between the screen film and the touch screen can be squeezed out from the middle to both ends. The elastic airbag avoids direct contact between the rotating pressure roller and the screen film, preventing the screen film from being scratched due to accidental damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0023] Figure 1 This is a structural schematic diagram of a touch screen coating device according to the present invention;

[0024] Figure 2 This is a schematic diagram of the structure inside a processing box in a touch screen coating device of the present invention;

[0025] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 4 This is a schematic cross-sectional view of a processing box in a touch screen coating device of the present invention;

[0027] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0028] Figure 6 The present invention is a structural diagram of a movable plate and a movable seat in a touch screen laminating device.

[0029] The main component symbols are described as follows:

[0030] 1. Base; 2. Movable frame; 3. Support;

[0031] 4. Processing box; 41. Air pump; 42. Baffle; 43. Elastic airbag;

[0032] 5. Movable plate; 51. Bidirectional threaded rod;

[0033] 52. Movable seat; 521. Adapter block; 522. Limit rod; 523. Second compression spring;

[0034] 53. Rotate the pressure roller;

[0035] 54, fixed block; 541, driving airbag; 542, reel; 543, movable column; 544, first compression spring;

[0036] 6. Limiting groove; 61. Limiting block. DETAILED DESCRIPTION

[0037] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts are numbered the same. Implementations not shown or described in the drawings are forms known to those of ordinary skill in the art. In addition, directional terms mentioned in the embodiments, such as "upper," "lower," "top," "bottom," "left," "right," "front," and "back," are merely references to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0038] like Figures 1 to 6As shown, a touch screen coating device of the present invention includes a base 1 for supporting the touch screen, a movable frame 2 for placing the screen film is movably mounted on the base 1, a plurality of spring plates are arranged between the movable frame 2 and the base 1, a pillar 3 is fixedly mounted on the base 1, a processing box 4 is fixedly mounted on the upper end of the pillar 3, an air pump 41 is fixedly mounted on the upper end of the processing box 4, two baffles 42 and an elastic air bag 43 located between the two baffles 42 are fixedly mounted on the lower end of the processing box 4, the elastic air bag 43 is located above the movable frame 2, a first communicating groove and a second communicating groove are opened at the upper end of the processing box 4, an air outlet end of the air pump 41 is connected to the elastic air bag 43 through the first communicating groove, one end of the second communicating groove passes through the upper end of the processing box 4, and the other end is connected to the first communicating groove, a first solenoid valve and a second solenoid valve are respectively arranged in the first communicating groove and the second communicating groove, and a rolling mechanism for squeezing out air between the screen film and the touch screen is provided on the processing box 4.

[0039] It is further defined that the rolling mechanism includes a movable plate 5, a bidirectional threaded rod 51, two movable seats 52, two rotating pressure rollers 53 and a driving member for driving the movable plate 5 to rise and fall, the movable plate 5 is movably installed between the processing box 4 and the elastic airbag 43, the lower end of the movable plate 5 is provided with a mounting groove, the bidirectional threaded rod 51 is rotatably installed in the mounting groove, the movable plate 5 is provided with a motor for driving the bidirectional threaded rod 51 to rotate, the two movable seats 52 are threadedly connected to the bidirectional threaded rod 51, when the bidirectional threaded rod 51 rotates, the two movable seats 52 move toward or away from each other, the two rotating pressure rollers 53 are rotatably installed at the lower ends of the two movable seats 52, and the driving member is arranged inside the processing box 4.

[0040] It is further defined that the driving member includes a fixed block 54 with a cylindrical cavity inside, a driving airbag 541, a winding wheel 542, a movable column 543 and a first compression spring 544. The fixed block 54 is fixedly mounted on the inner wall of the processing box 4. The processing box 4 is provided with a third communicating groove connected to the first communicating groove and the second communicating groove. The air outlet end of the air pump 41 is connected to the cavity inside the fixed block 54 through the third communicating groove. A third solenoid valve is provided in the third communicating groove. The driving airbag 541 is provided in the cavity. The winding wheel 542 rotates The shaft is rotatably installed in the cavity, and a torsion spring is fixedly installed between the winding wheel 542 and the rotating shaft. The driving airbag 541 consists of a fixed section and a connecting section. The fixed section is fixedly connected to the inner wall of the cavity, and the connecting section is wound on the winding wheel 542. The driving airbag 541 and the upper part of the cavity form an air-containing cavity section. The movable column 543 is movably inserted into the lower end of the fixed block 54. A limiting disk is provided at the upper end of the movable column 543. The limiting disk is in contact with the driving airbag 541. The first compression spring 544 is fixedly installed between the limiting disk and the bottom wall of the cavity.

[0041] It is further defined that a mounting opening is provided at the lower end of the movable seat 52, and a transfer block 521 is movably installed inside the mounting opening, and a bearing is provided on the transfer block 521, and the transfer block 521 is rotatably connected to the end of the rotating pressure roller 53 through the bearing, and a limiting rod 522 is fixedly installed on the transfer block 521, and the limiting rod 522 is movably inserted into the movable seat 52, and the limiting rod 522 is provided with a second compression spring 523 between the transfer block 521 and the mounting opening wall, and a pressure sensor is provided at the end of the second compression spring 523 close to the mounting opening wall.

[0042] It is further defined that a limiting groove 6 is provided at the lower end of the movable plate 5 , a limiting block 61 is fixedly installed at the upper end of the movable seat 52 , and the limiting block 61 is movably installed in the limiting groove 6 .

[0043] It is further defined that an anti-slip strip is fixedly installed on one side of the middle portion of the elastic airbag 43 close to the movable frame 2.

[0044] A coating process for a touch screen coating device comprises the following steps:

[0045] S1, placing the touch screen to be coated on the upper end of the base 1, and then spreading the screen film flat on the movable frame 2;

[0046] S2: Open the first solenoid valve to connect the first connecting groove, and the air pump 41 starts to pump air into the processing box 4, causing the elastic airbag 43 to expand under the action of air pressure. Under the restriction of the baffle 42, the elastic airbag 43 expands in a certain direction. The anti-slip strip at the lower end first contacts the screen film, and then pushes the screen film to adhere to the touch screen. As the elastic airbag 43 expands, it gradually pushes the entire screen film onto the touch screen, and the screen film is initially attached.

[0047] S3: Close the first solenoid valve, closing the first connecting groove. The elastic airbag 43 remains inflated and exerts a squeezing force on the screen film, causing it to adhere to the touch screen. Open the third solenoid valve, allowing the air pump 41 to pump air into the cavity of the fixed block 54, driving the airbag 541 to expand and pushing the movable column 543 downward until the rotating pressure roller 53 adheres to the inner wall of the elastic airbag 43, squeezing the second compression spring 523, and the pressure detected by the pressure sensor reaches the set value. Close the third solenoid valve and the air pump 41.

[0048] S4: The motor on the movable plate 5 starts to rotate, driving the bidirectional threaded rod 51 to rotate, thereby driving the two movable seats 52 to move in opposite directions, so that the rotating pressure roller 53 moves from the middle to the sides. The elastic airbag 43 transmits the force to the screen film, squeezing out the air between the screen film and the touch screen;

[0049] S5. After the screen film is pasted, the motor works again, driving the bidirectional threaded rod 51 to rotate, so that the two movable seats 52 move toward each other to the initial position, the second solenoid valve, the second solenoid valve and the third solenoid valve are all opened, and the air between the elastic airbag 43 and the processing box 4 and the air in the cavity of the fixed block 54 are all released. The elastic airbag 43 and the driving airbag 541 are both contracted. When the driving airbag 541 contracts, the connecting section is wound onto the winding wheel 542, and the first compression spring 544 generates an elastic restoring force on the movable column 543, thereby driving the movable plate 5 to return to the initial position for the next use.

[0050] The method of use of the present invention is as follows:

[0051] During use, the touch screen to be coated is placed on the upper end of the base 1, and the screen film is then spread flat on the movable frame 2. The first solenoid valve is opened to connect the first connecting groove, and the air pump 41 is activated to deliver air into the processing box 4, causing the elastic airbag 43 to expand under the action of air pressure. Under the restriction of the baffle 42, the elastic airbag 43 expands in a direction, and the anti-slip strip at the lower end first contacts the screen film, and then pushes the screen film to adhere to the touch screen. As the elastic airbag 43 expands, it gradually pushes the entire screen film onto the touch screen, and the initial lamination of the screen film is completed.

[0052] The first solenoid valve is closed, so that the first connecting groove is in a closed state. At this time, the elastic airbag 43 remains inflated and exerts a squeezing force on the screen film, making it adhere to the touch screen. The third solenoid valve is opened, so that the air pump 41 can work and deliver air into the cavity of the fixed block 54, driving the airbag 541 to expand and push the movable column 543 downward until the rotating pressure roller 53 adheres to the inner wall of the elastic airbag 43, the second compression spring 523 is squeezed, and the pressure detected by the pressure sensor reaches the set value. The third solenoid valve and the air pump 41 are closed.

[0053] When the transfer block 521 moves, the limiting rod 522 limits the transfer block 521 so that the transfer block 521 moves in the vertical direction, thereby preventing the rotating pressure roller 53 from being separated from the mounting opening of the movable seat 52 when the rotating pressure roller 53 moves.

[0054] The motor on the movable plate 5 rotates, driving the bidirectional threaded rod 51 to rotate, thereby driving the two movable seats 52 to move in opposite directions, so that the rotating pressure roller 53 moves from the middle to the sides, and the elastic airbag 43 transmits the force to the screen film, squeezing out the air between the screen film and the touch screen;

[0055] After the screen film is pasted, the motor works again, driving the bidirectional threaded rod 51 to rotate, so that the two movable seats 52 move toward each other to the initial position, the second solenoid valve, the second solenoid valve and the third solenoid valve are all opened, and the air between the elastic airbag 43 and the processing box 4 and the air in the cavity of the fixed block 54 are all released, and the elastic airbag 43 and the driving airbag 541 are both contracted. When the driving airbag 541 contracts, the connecting section is wound onto the winding wheel 542, and the first compression spring 544 generates an elastic restoring force on the movable column 543, thereby driving the movable plate 5 to return to the initial position for the next use.

[0056] The above describes in detail the touch screen coating device and process provided by the present invention. The description of the specific embodiments is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims.

Claims

1. A touch screen coating device, comprising a base for supporting the touch screen, characterized in that: The base is movably provided with a movable frame for placing a screen film, a plurality of spring plates are arranged between the movable frame and the base, a pillar is fixedly installed on the base, a processing box is fixedly installed on the upper end of the pillar, an air pump is fixedly installed on the upper end of the processing box, two baffles and an elastic air bag located between the two baffles are fixedly installed on the lower end of the processing box, the elastic air bag is located above the movable frame, a first communicating groove and a second communicating groove are provided at the upper end of the processing box, an air outlet end of the air pump is connected with the elastic air bag through the first communicating groove, one end of the second communicating groove passes through the upper end of the processing box, and the other end is connected with the first communicating groove, a first solenoid valve and a second solenoid valve are respectively arranged in the first communicating groove and the second communicating groove, and a rolling mechanism for squeezing out air between the screen film and the touch screen is provided on the processing box; The rolling mechanism includes a movable plate, a bidirectional threaded rod, two movable seats, two rotating pressure rollers and a driving member that drives the movable plate to rise and fall, the movable plate is movably installed between the processing box and the elastic airbag, the lower end of the movable plate is provided with a mounting groove, the bidirectional threaded rod is rotatably installed in the mounting groove, the movable plate is provided with a motor that drives the bidirectional threaded rod to rotate, the two movable seats are threadedly connected to the bidirectional threaded rod, when the bidirectional threaded rod rotates, the two movable seats move toward or away from each other, the two rotating pressure rollers are rotatably installed at the lower ends of the two movable seats, and the driving member is arranged inside the processing box; The driving member includes a fixed block with a cylindrical cavity inside, a driving airbag, a winding wheel, a movable column and a first compression spring, the fixed block is fixedly mounted on the inner wall of the processing box, the processing box is provided with a third communicating groove connected with the first communicating groove and the second communicating groove, the outlet end of the air pump is connected with the cavity inside the fixed block through the third communicating groove, and a third solenoid valve is provided in the third communicating groove, the driving airbag is arranged in the cavity, the winding wheel is rotatably mounted in the cavity through a rotating shaft, a torsion spring is fixedly installed between the winding wheel and the rotating shaft, the driving airbag consists of a fixed section and a connecting section, the fixed section is fixedly connected to the inner wall of the cavity, the connecting section is wound on the winding wheel, the driving airbag and the upper part of the cavity form an air containing cavity section, the movable column is movably inserted into the lower end of the fixed block, the upper end of the movable column is provided with a limiting plate, the limiting plate contacts the driving airbag, and the first compression spring is fixedly mounted between the limiting plate and the cavity bottom wall.

2. The touch screen coating device according to claim 1, characterized in that: The lower end of the movable seat is provided with a mounting opening, and a transfer block is movably installed inside the mounting opening. A bearing is provided on the transfer block, and the transfer block is rotatably connected to the end of the rotating pressure roller through the bearing. A limit rod is fixedly installed on the transfer block, and the limit rod is movably inserted into the movable seat. The limit rod is provided with a second compression spring between the transfer block and the mounting opening wall, and a pressure sensor is provided at one end of the second compression spring close to the mounting opening wall.

3. The touch screen coating device according to claim 1, wherein: A limiting groove is provided at the lower end of the movable plate, and a limiting block is fixedly installed at the upper end of the movable seat. The limiting block is movably installed in the limiting groove.

4. The touch screen coating device according to claim 1, characterized in that: An anti-slip strip is fixedly installed on one side of the middle portion of the elastic airbag close to the movable frame.

5. The coating process of the touch screen coating device according to claim 1, characterized in that: The following steps are involved: S1, placing the touch screen to be coated on the upper end of the base, and then spreading the screen film flat on the movable frame; S2: Open the first solenoid valve to connect the first connecting groove, and the air pump starts to deliver air into the processing box, causing the elastic airbag to expand under the action of air pressure. Under the restraint of the baffle, the elastic airbag expands in a certain direction, and the anti-slip strip at the lower end first contacts the screen film, and then pushes the screen film to adhere to the touch screen. As the elastic airbag expands, it gradually pushes the entire screen film onto the touch screen, and the screen film is initially attached. S3: Close the first solenoid valve, closing the first connecting groove. The elastic airbag remains inflated and exerts a squeezing force on the screen film, causing it to adhere to the touch screen. Open the third solenoid valve, allowing the air pump to pump air into the cavity of the fixed block, driving the airbag to expand and pushing the movable column downward until the rotating pressure roller adheres to the inner wall of the elastic airbag, squeezing the second compression spring. The pressure detected by the pressure sensor reaches the set value, and the third solenoid valve and air pump are closed. S4: The motor on the movable plate starts to work, driving the bidirectional threaded rod to rotate, thereby driving the two movable seats to move in opposite directions, so that the rotating pressure roller moves from the middle to the sides. The elastic airbag transmits the force to the screen film, squeezing out the air between the screen film and the touch screen; S5. After the screen film is pasted, the motor works again, driving the bidirectional threaded rod to rotate, so that the two movable seats move toward each other to the initial position, the second solenoid valve, the second solenoid valve and the third solenoid valve are all opened, the air between the elastic airbag and the processing box and the air in the cavity of the fixed block are all released, the elastic airbag and the driving airbag are both contracted, and when the driving airbag contracts, the connecting section is wound onto the winding wheel, and the first compression spring generates an elastic restoring force on the movable column, thereby driving the movable plate to return to the initial position, which is convenient for the next use.

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