Three-layer sandwich OCA optical cement production equipment

Abstract

The invention relates to the technical field of OCA optical cement, in particular to three-layer sandwich OCA optical cement production equipment which comprises a working frame, an attaching mechanism and a die cutting mechanism, the attaching mechanism comprises an upper pressing roller, a lower pressing roller and a film outlet roller, and the upper pressing roller, the lower pressing roller and the film outlet roller rotate horizontally and are connected to the working frame; a lower-layer release film is arranged on the film discharging roller; a gap for the OCA and the lower release film to pass through is formed between the upper pressing roller and the lower pressing roller; an adjusting groove is formed in the side wall of the working frame, a mounting base is arranged at the top in the adjusting groove, an adjusting base is arranged at the end, located in the adjusting groove, of the upper pressing roller, the upper pressing roller is rotationally matched with the adjusting base, an adjusting block is arranged at the top of the adjusting base, and the adjusting block is inserted into the mounting base and connected with a spring in the mounting base; and the die cutting mechanism is used for carrying out die cutting work on the attached OCA optical cement. The OCA optical cement laminating machine can adapt to laminating work of OCA optical cement with different thicknesses and materials and a lower release film, the laminating quality is ensured, and the universality and applicability of equipment are improved.

Description

Technical Field

[0001] The invention relates to the technical field of OCA optical adhesives, in particular to a three-layer sandwich OCA optical adhesive production device. Background Art

[0002] OCA optical adhesive is one of the important raw materials for touch screens. It is made by making optical acrylic adhesive without a substrate, and then a layer of release film is attached to the upper and lower bottom layers. It is a double-sided laminating tape without a matrix material. It is the best adhesive for touch screens.

[0003] Chinese patent CN118308033A discloses a three-layer sandwich OCA optical adhesive and its production equipment. By setting a slitting mechanism, a first bonding mechanism, a first die-cutting mechanism, a second bonding mechanism, a second die-cutting mechanism and a collecting mechanism, the slitting process of the OCA optical adhesive mother roll, the bonding process of the OCA optical adhesive and the upper and lower layers of release films, the die-cutting process, the removal process of the OCA optical adhesive and the release film waste, and the OCA optical adhesive slice collection process are integrated together. The production process of the OCA optical adhesive product is seamlessly connected, and there is no need for a large number of transportation and winding and unwinding operations, thereby reducing the impact of environmental factors, thereby being able to simultaneously improve the production efficiency and production quality of the OCA optical adhesive.

[0004] However, this patent still has the following problems: during the bonding process of the OCA optical adhesive and the lower release film and the upper release film, the bonding distance between the pressure rollers cannot be adjusted, which affects the bonding quality when bonding OCA optical adhesives of different thicknesses and materials. Summary of the invention

[0005] The purpose of this application is to provide a three-layer sandwich OCA optical adhesive production equipment, which allows appropriate pressure to be applied to the upper pressure roller through the spring structure in the adjustment seat and the mounting seat to adapt to OCA optical adhesives and lower release films of different thicknesses and materials, ensure the bonding quality, and improve the versatility and applicability of the equipment.

[0006] To achieve the above-mentioned purpose, the present application provides a three-layer sandwich OCA optical adhesive production equipment, including a work frame, a bonding mechanism and a die-cutting mechanism, the work frame is sequentially provided with the bonding mechanism and the die-cutting mechanism from one end to the other end; the bonding mechanism includes an upper pressing roller, a lower pressing roller and a film discharge roller, the upper pressing roller, the lower pressing roller and the film discharge roller all rotate horizontally and are connected to the work frame; the film discharge roller is provided with a lower layer of release film; there is a gap between the upper pressing roller and the lower pressing roller for the OCA optical adhesive and the lower layer of release film to pass through; the side wall of the work frame is provided with an adjustment groove, the top of the adjustment groove is provided with a mounting seat, one end of the upper pressing roller located in the adjustment groove is provided with an adjustment seat, the upper pressing roller rotates with the adjustment seat, the top of the adjustment seat is provided with an adjustment block, the adjustment block is inserted into the interior of the mounting seat, and is connected to the spring inside the mounting seat; the die-cutting mechanism performs die-cutting on the bonded OCA optical adhesive.

[0007] As a further solution of the present invention: a limiting mechanism is arranged at the front end of the bonding mechanism, and the limiting mechanism includes a limiting roller, a first motor and a limiting ring; the limiting roller is fixedly arranged on the side wall of the working frame, a first screw rod is arranged inside the limiting roller, and a plurality of slide grooves are arranged on the outer peripheral wall of the limiting roller; the output end of the first motor passes through the working frame and is connected with the first screw rod, a partition ring is arranged in the middle position of the first screw rod, and the thread teeth on both sides of the partition ring are in opposite directions; limiting rings are arranged on both sides of the partition ring, the bottom of the limiting ring is arranged on the first screw rod, and the top passes through the slide groove and is connected with a surrounding ring, and the surrounding ring is slidably matched with the slide groove.

[0008] As a further solution of the present invention: the die-cutting mechanism includes a die-cutting roller and a supporting roller, and the die-cutting roller and the supporting roller are both horizontally rotatably connected to the working frame, and the rotation direction of the die-cutting roller is opposite to that of the supporting roller; a die-cutting knife is arranged in a ring on the die-cutting roller; the supporting roller is arranged below the die-cutting roller, and there is a gap between the die-cutting roller and the supporting roller for the OCA optical glue and the lower release film to pass through.

[0009] As a further solution of the present invention: a tensioning roller is arranged between the laminating mechanism and the die-cutting mechanism.

[0010] As a further solution of the present invention: the side wall of the tensioning roller is provided with a positioning block, the positioning block is provided on the side wall of the working frame, and the tensioning roller is rotatably matched with the positioning block; the side wall of the working frame is provided with a tensioning groove, the tensioning roller is slidably matched with the tensioning groove, the side wall of the working frame is provided with a mounting plate, the mounting plate is provided at the top and bottom of the tensioning groove, a second screw rod is provided between the mounting plates, the positioning block is provided on the second screw rod, a second motor is provided on the top of the mounting plate, and the output end of the second motor is connected to the second screw rod.

[0011] As a further solution of the present invention: positioning grooves are arranged on both sides of the side walls of the adjustment groove, and guide blocks are arranged on both sides of the adjustment seat, and the guide blocks are slidably matched with the positioning grooves.

[0012] As a further solution of the present invention: a winding roller is arranged on the side wall of the work frame, and the winding roller is arranged above the die-cutting roller and is used for winding up the edge material of the OCA optical adhesive.

[0013] As a further solution of the present invention: the upper pressing roller and the lower pressing roller rotate in opposite directions.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention allows the upper pressure roller to be subjected to appropriate pressure by adjusting the spring structure in the seat and the mounting seat to adapt to OCA optical adhesives and lower release films of different thicknesses and materials, thereby ensuring the lamination quality and improving the versatility and applicability of the equipment.

[0016] 2. The present invention drives the first screw to rotate by the first motor. Since the threads on both sides of the partition ring are in opposite directions, the limiting rings on both sides can be driven to move closer to or away from each other, thereby controlling the position of the surrounding ring on the limiting roller, so that the OCA optical glue can always be located between the upper pressure roller and the lower pressure roller when entering the bonding mechanism, ensuring its alignment and bonding quality with the lower release film.

[0017] 3. The present invention drives the second screw to rotate through the second motor, so that the positioning block moves up and down with the rotation of the screw, thereby driving the tensioning roller to slide in the tensioning groove, thereby achieving precise adjustment of the tensioning roller position. By adjusting the position of the tensioning roller, the tensioning degree of OCA optical adhesive and related film materials can be changed to ensure the stability and accuracy of the material during the transportation process.

[0018] 4. The present invention provides a sliding fit between the positioning groove and the guide block, so that when the upper pressure roller fits the OCA optical adhesive and the lower release film, the adjustment seat is accurately guided during spring adjustment, thereby reducing errors and damage caused by shaking or vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the prior art and the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a three-layer sandwich OCA optical adhesive production equipment.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the bonding mechanism.

[0022] Figure 3 Schematic diagram of the three-dimensional structure of the limiting mechanism Figure 1 .

[0023] Figure 4 Schematic diagram of the three-dimensional structure of the limiting mechanism Figure 2 .

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the working frame.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the tensioning roller.

[0026] The reference numerals in the figure are as follows: 1. working frame; 11. adjusting groove; 12. positioning groove; 13. tensioning groove; 14. winding roller; 2. upper pressure roller; 3. lower pressure roller; 4. film discharge roller; 5. mounting seat; 51. adjusting seat; 52. adjusting block; 53. spring; 54. guide block; 6. limiting roller; 61. slide groove; 7. first motor; 71. first screw rod; 72. partition ring; 73. limiting ring; 74. surrounding ring; 8. die-cutting roller; 81. supporting roller; 82. die-cutting knife; 9. tensioning roller; 91. positioning block; 92. mounting plate; 93. second screw rod; 94. second motor. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] like Figures 1 to 6As shown, a three-layer sandwich OCA optical adhesive production equipment includes a work frame 1, a laminating mechanism and a die-cutting mechanism, wherein the work frame 1 is provided with the laminating mechanism and the die-cutting mechanism in sequence from one end to the other end; the laminating mechanism includes an upper pressing roller 2, a lower pressing roller 3 and a film discharge roller 4, wherein the upper pressing roller 2, the lower pressing roller 3 and the film discharge roller 4 are all horizontally rotated and connected to the work frame 1; the film discharge roller 4 is provided with a lower layer release film; there is a gap between the upper pressing roller 2 and the lower pressing roller 3 for the OCA optical adhesive and the lower layer release film to pass through; the OCA optical adhesive and the lower layer release film are fed into the gap between the upper pressing roller 2 and the lower pressing roller 3; the upper pressing roller 2 and the lower pressing roller 3 rotate in opposite directions. Through the rotation of the upper pressing roller 2 and the lower pressing roller 3, the OCA optical adhesive is evenly laminated on the lower layer release film; the film discharge roller 4 continuously provides the lower layer release film to ensure the continuous laminating process.

[0029] An adjustment groove 11 is provided on the side wall of the working frame 1, a mounting seat 5 is provided on the top of the adjustment groove 11, an adjustment seat 51 is provided on one end of the upper pressing roller 2 located in the adjustment groove 11, the upper pressing roller 2 is rotatably matched with the adjustment seat 51, an adjustment block 52 is provided on the top of the adjustment seat 51, the adjustment block 52 is inserted into the mounting seat 5, and is connected to the spring 53 inside the mounting seat 5; the die-cutting mechanism performs die-cutting on the bonded OCA optical glue; after die-cutting, the upper release film of the OCA optical glue is bonded and die-cut in the above-mentioned manner.

[0030] The spring 53 structure in the adjusting seat 51 and the mounting seat 5 allows appropriate pressure to be applied to the upper pressing roller 2 to adapt to OCA optical adhesives and lower release films of different thicknesses and materials, thereby ensuring the lamination quality and improving the versatility and applicability of the equipment.

[0031] A limiting mechanism is arranged at the front end of the bonding mechanism, and the limiting mechanism includes a limiting roller 6, a first motor 7 and a limiting ring 73. The limiting roller 6 is fixedly arranged on the side wall of the working frame 1, and a first screw rod 71 is arranged inside the limiting roller 6. A plurality of slide grooves 61 are arranged on the outer peripheral wall of the limiting roller 6. The output end of the first motor 7 passes through the working frame 1 and is connected with the first screw rod 71. A partition ring 72 is arranged at the middle position of the first screw rod 71, and the thread teeth on both sides of the partition ring 72 are in opposite directions; limiting rings 73 are arranged on both sides of the partition ring 72, the bottom of the limiting ring 73 is arranged on the first screw rod 71, and the top passes through the slide groove 61 and is connected with a surrounding ring 74, and the surrounding ring 74 is slidably matched with the slide groove 61.

[0032] The first motor 7 drives the first screw rod 71 to rotate. Since the threads on both sides of the partition ring 72 are in opposite directions, the limiting rings 73 on both sides can be driven to move closer to or away from each other, thereby controlling the position of the surrounding ring 74 on the limiting roller 6, so that the OCA optical adhesive can always be located between the upper pressure roller 2 and the lower pressure roller 3 when entering the bonding mechanism, ensuring its alignment with the lower release film and the bonding quality.

[0033] The die-cutting mechanism includes a die-cutting roller 8 and a supporting roller 81, and the die-cutting roller 8 and the supporting roller 81 are both horizontally rotatably connected to the working frame 1, and the rotation directions of the die-cutting roller 8 and the supporting roller 81 are opposite; a die-cutting knife 82 is annularly arranged on the die-cutting roller 8; the supporting roller 81 is arranged below the die-cutting roller 8, and there is a gap between the die-cutting roller 8 and the supporting roller 81 for the OCA optical glue and the lower layer release film to pass through.

[0034] The laminated OCA optical adhesive and the lower release film pass through the gap between the die-cutting roller 8 and the supporting roller 81, and the die-cutting blade 82 on the die-cutting roller 8 cuts the material. Since the die-cutting roller 8 and the supporting roller 81 rotate in opposite directions, this design ensures that the material is subjected to uniform cutting force when passing through the gap, thereby achieving precise die-cutting.

[0035] A tensioning roller 9 is arranged between the laminating mechanism and the die-cutting mechanism, and a positioning block 91 is arranged on the side wall of the tensioning roller 9, and the positioning block 91 is arranged on the side wall of the working frame 1, and the tensioning roller 9 rotates in cooperation with the positioning block 91; a tensioning groove 13 is arranged on the side wall of the working frame 1, and the tensioning roller 9 slides in cooperation with the tensioning groove 13, and a mounting plate 92 is arranged on the side wall of the working frame 1, and the mounting plate 92 is arranged on the top and bottom of the tensioning groove 13, and a second screw rod 93 is arranged between the mounting plates 92, and the positioning block 91 is arranged on the second screw rod 93, and a second motor 94 is arranged on the top of the mounting plate 92, and the output end of the second motor 94 is connected to the second screw rod 93.

[0036] When the position of the tensioning roller 9 needs to be adjusted, the second motor 94 is started, and the output end of the second motor 94 drives the second screw 93 to rotate. Due to the transmission characteristics of the second screw 93, the positioning block 91 will move up and down with the rotation of the screw, and the positioning block 91 and the side wall of the tensioning roller 9 rotate in coordination. Therefore, when the positioning block 91 moves up and down, it will drive the tensioning roller 9 to slide in the tensioning groove 13, thereby achieving precise adjustment of the position of the tensioning roller 9. By adjusting the position of the tensioning roller 9, the tensioning degree of the OCA optical adhesive and its related film materials can be changed to ensure the stability and accuracy of the materials during the transportation process.

[0037] Positioning grooves 12 are disposed on both sides of the sidewalls of the adjusting groove 11 , and guide blocks 54 are disposed on both sides of the adjusting seat 51 . The guide blocks 54 are slidably matched with the positioning grooves 12 .

[0038] By setting the sliding fit of the positioning groove 12 and the guide block 54, when the upper pressure roller 2 fits the OCA optical adhesive and the lower release film, the precise guidance of the adjustment seat 51 during the adjustment of the spring 53 is ensured, reducing errors and damage caused by shaking or vibration.

[0039] The side wall of the work frame 1 is provided with a winding roller 14, which is arranged above the die-cutting roller 8 and is used to wind up the edge material of the OCA optical adhesive.

[0040] The working principle of the present invention is as follows: the OCA optical glue and the lower release film are fed into the gap between the upper pressing roller 2 and the lower pressing roller 3. Through the rotation of the upper pressing roller 2 and the lower pressing roller 3, the OCA optical glue is evenly bonded to the lower release film; the film discharge roller 4 continuously provides the lower release film to ensure the continuity of the bonding process. The spring 53 structure in the adjustment seat 51 and the mounting seat 5 allows the upper pressing roller 2 to be subjected to appropriate pressure to adapt to OCA optical glue and the lower release film of different thicknesses and materials, thereby ensuring the bonding quality and improving the versatility and applicability of the equipment. The bonded OCA optical glue and the lower release film pass through the gap between the die-cutting roller 8 and the supporting roller 81, and the die-cutting knife 82 on the die-cutting roller 8 will cut the material. After die-cutting, the upper release film is bonded and die-cut on the OCA optical glue in the above-mentioned manner.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be 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 application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A three-layer sandwich OCA optical adhesive production equipment, comprising a work frame (1), a laminating mechanism and a die-cutting mechanism, wherein the work frame (1) is provided with the laminating mechanism and the die-cutting mechanism in sequence from one end to the other end; the laminating mechanism comprises an upper pressing roller (2), a lower pressing roller (3) and a film discharge roller (4), wherein the upper pressing roller (2), the lower pressing roller (3) and the film discharge roller (4) are all horizontally rotated and connected to the work frame (1); a lower layer release film is provided on the film discharge roller (4); a gap is provided between the upper pressing roller (2) and the lower pressing roller (3) for the OCA optical adhesive and the lower layer release film to pass through; It is characterized in that The side wall of the working frame (1) is provided with an adjustment groove (11), a mounting seat (5) is provided at the top of the adjustment groove (11), an adjustment seat (51) is provided at one end of the upper pressure roller (2) located in the adjustment groove (11), the upper pressure roller (2) is rotatably matched with the adjustment seat (51), an adjustment block (52) is provided at the top of the adjustment seat (51), the adjustment block (52) is inserted into the interior of the mounting seat (5), and is connected to a spring (53) inside the mounting seat (5); The die-cutting mechanism performs die-cutting on the bonded OCA optical adhesive.

2. The three-layer sandwich OCA optical adhesive production equipment according to claim 1 is characterized in that: A limiting mechanism is arranged at the front end of the laminating mechanism, and the limiting mechanism comprises a limiting roller (6), a first motor (7) and a limiting ring (73); the limiting roller (6) is fixedly arranged on the side wall of the working frame (1); a first screw rod (71) is arranged inside the limiting roller (6); a plurality of slide grooves (61) are arranged on the outer peripheral wall of the limiting roller (6); an output end of the first motor (7) passes through the working frame (1) and is connected with the first screw rod (71); a partition ring (72) is arranged at the middle position of the first screw rod (71); the thread teeth on both sides of the partition ring (72) are in opposite directions; limiting rings (73) are arranged on both sides of the partition ring (72); the bottom of the limiting ring (73) is arranged on the first screw rod (71); the top passes through the slide groove (61) and is connected with a surrounding ring (74); the surrounding ring (74) is slidably matched with the slide groove (61).

3. The three-layer sandwich OCA optical adhesive production equipment according to claim 1 is characterized in that: The die-cutting mechanism comprises a die-cutting roller (8) and a supporting roller (81); the die-cutting roller (8) and the supporting roller (81) are both horizontally rotatably connected to the working frame (1), and the die-cutting roller (8) and the supporting roller (81) rotate in opposite directions; a die-cutting knife (82) is annularly arranged on the die-cutting roller (8); the supporting roller (81) is arranged below the die-cutting roller (8), and there is a gap between the die-cutting roller (8) and the supporting roller (81) for the OCA optical glue and the lower release film to pass through.

4. The three-layer sandwich OCA optical adhesive production equipment according to claim 3 is characterized in that: A tensioning roller (9) is arranged between the laminating mechanism and the die-cutting mechanism.

5. The three-layer sandwich OCA optical adhesive production equipment according to claim 4 is characterized in that: The tensioning roller (9) is provided with a positioning block (91) on the side wall, and the positioning block (91) is arranged on the side wall of the working frame (1), and the tensioning roller (9) and the positioning block (91) are rotatably matched; the working frame (1) is provided with a tensioning groove (13) on the side wall, and the tensioning roller (9) and the tensioning groove (13) are slidably matched; the working frame (1) is provided with a mounting plate (92) on the side wall, and the mounting plate (92) is arranged on the top and bottom of the tensioning groove (13); a second screw rod (93) is arranged between the mounting plates (92); the positioning block (91) is arranged on the second screw rod (93); a second motor (94) is arranged on the top of the mounting plate (92); and the output end of the second motor (94) is connected to the second screw rod (93).

6. The three-layer sandwich OCA optical adhesive production equipment according to claim 1, characterized in that: Positioning grooves (12) are arranged on both sides of the side walls of the adjustment groove (11), and guide blocks (54) are arranged on both sides of the adjustment seat (51), and the guide blocks (54) are slidably matched with the positioning grooves (12).

7. The three-layer sandwich OCA optical adhesive production equipment according to claim 3, characterized in that: The side wall of the working frame (1) is provided with a winding roller (14), and the winding roller (14) is arranged above the die-cutting roller (8) and is used for winding up the edge material of the OCA optical adhesive.

8. The three-layer sandwich OCA optical adhesive production equipment according to claim 1, characterized in that: The upper pressing roller (2) and the lower pressing roller (3) rotate in opposite directions.

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