A translucent OCA optical adhesive production device and preparation method thereof

Abstract

The present invention relates to the technical field of optical adhesive production, and discloses a translucent OCA optical adhesive production device, comprising a frame, wherein a first feeding roller and a winding roller are rotatably installed on both sides of the frame, a slitting roller, a pressing roller, a cutting mechanism and a hot pressing sealing mechanism are sequentially arranged between the first feeding roller and the winding roller, and two slitting rollers and two pressing rollers are each provided, and two second feeding rollers are rotatably installed inside the frame, wherein one second feeding roller is located above the pressing roller, and the other second feeding roller is located below the pressing roller; the present invention can protect the OCA optical adhesive by setting two layers of release film, and the width of the release film is greater than the width of the OCA optical adhesive, and the parts of the two layers of release film exceeding the OCA optical adhesive are hot-pressed and bonded together by a hot pressing sealing mechanism, so that foreign matter such as dust cannot enter the gap between the two layers of release film, thereby effectively protecting the OCA optical adhesive.

Description

Technical Field

[0001] The invention relates to the technical field of optical adhesive production, and in particular to a semi-transparent OCA optical adhesive production device and a preparation method thereof. Background Art

[0002] Translucent OCA optical adhesive is a special adhesive mainly used for bonding transparent optical components such as lenses. It is colorless and transparent, with a light transmittance of more than 95%. It can be cured at room temperature or medium temperature, and has small curing shrinkage. This optical adhesive is usually made of optical acrylic adhesive, has no substrate, and a layer of release film is attached to the upper and lower bottom layers to form a high-transparency double-sided bonding tape. Translucent OCA optical adhesive not only has high clarity and high light transmittance, but also has the advantages of high adhesion, water resistance, high temperature resistance, and UV resistance. It is widely used in electronic paper, transparent device bonding, projection screen assembly, aerospace or military optical device assembly, display assembly, lens assembly and other fields.

[0003] Chinese patent CN118308033A discloses a three-layer sandwich OCA optical adhesive and its production equipment, the technical solution of which is as follows: the three-layer sandwich OCA optical adhesive includes an upper release film, a glue layer and a lower release film stacked from top to bottom, and the edges of the upper release film and the lower release film extend from the edges of the glue layer to form a three-layer sandwich structure. The equipment integrates the stripping process of the OCA optical adhesive mother roll, the bonding process of the OCA optical adhesive and the upper and lower release films, the die-cutting process, the removal process of the OCA optical adhesive and the release film waste, and the slicing and collection process of the OCA optical adhesive by setting a striping mechanism, a first bonding mechanism, a first die-cutting mechanism, a second bonding mechanism, a second die-cutting mechanism and a collection mechanism. The production process of the OCA optical adhesive product is seamlessly connected, and a large number of transport and reeling operations are not required, 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] The OCA optical adhesive production equipment adheres release films to both sides of the OCA optical adhesive, and makes the width of the release films greater than the width of the OCA optical adhesive, so that the edges of the upper release film and the lower release film extend from the edges of the adhesive layer to form a three-layer sandwich structure, so as to provide all-round protection for the adhesive layer and prevent the edge of the adhesive layer from being exposed to the outside world. However, due to the gap between the two release films at the edge, external dust can easily enter the gap and then adhere to the side wall of the OCA optical adhesive, and there is still a possibility of contamination of the OCA optical adhesive.

[0005] Therefore, it is necessary to provide a translucent OCA optical adhesive production equipment and a preparation method thereof to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a semi-transparent OCA optical adhesive production device and a preparation method thereof, wherein the parts of two release films that extend beyond the OCA optical adhesive are hot-pressed and bonded together through a hot-pressing and sealing mechanism, so that foreign matter such as dust cannot enter the gap between the two release films, thereby effectively protecting the OCA optical adhesive.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: A translucent OCA optical adhesive production equipment, including a frame, a first feeding roller and a winding roller are rotatably installed on both sides of the frame, a slitting roller, a pressing roller, a cutting mechanism and a hot pressing sealing mechanism are arranged in sequence between the first feeding roller and the winding roller, two slitting rollers and two pressing rollers are each provided, and two annular cutters are provided on the slitting roller, two second feeding rollers are rotatably installed inside the frame, one of the second feeding rollers is located above the pressing roller, and the other second feeding roller is located below the pressing roller, the hot pressing sealing mechanism includes a mounting roller and two hot pressing rings, the mounting roller is rotatably installed inside the frame, and hot pressing rings are fixedly mounted on both ends of the mounting roller, a first motor is fixedly installed on one side of the frame, and the output end of the first motor is transmission-connected to the winding roller; a rotating roller is arranged below the first feeding roller, and the two ends of the rotating roller are rotationally connected to the frame, two winding wheels are fixedly mounted on the rotating roller, and a second motor is fixedly installed on one side of the frame, and the output end of the second motor is transmission-connected to the rotating roller.

[0008] The present invention is further configured as follows: both ends of the mounting roller are sleeved with electric heating rings, one side of the electric heating ring is fixedly connected to the inner wall of the frame, the other side of the electric heating ring extends into the interior of the heat pressing ring, and the electric heating ring and the heat pressing ring are rotatably matched.

[0009] The present invention is further configured as follows: both ends of the mounting roller are fixedly mounted with mounting rings, the two mounting rings are located between the two heat pressing rings, and the outer peripheral wall of the mounting ring is fixedly mounted with a plurality of slitting knives, and the plurality of slitting knives are distributed in a circular array with the axis of the mounting ring as the array center.

[0010] The present invention is further configured as follows: a first slide groove is opened on the side wall of the frame, a mounting seat is fixedly installed on one side inside the first slide groove, a slide seat is slidably installed on the other side inside the first slide groove, the mounting seat and the slide seat are elastically connected by a first spring, an adjusting roller is rotatably installed on one side of the slide seat, the cut OCA optical glue passes around the adjusting roller and then is wound onto the winding wheel, a distance measuring component is arranged between the mounting seat and the slide seat, a control box is installed on the frame, a PLC controller is arranged in the control box, and the second motor is connected to the distance measuring component signal through the PLC controller.

[0011] The present invention is further configured as follows: two guide rollers are arranged on the inner side of the frame, the two guide rollers are arranged between the winding roller and the hot pressing sealing mechanism, both ends of the guide rollers are rotatably connected with cooling rollers, the diameter of the cooling rollers is larger than the diameter of the guide rollers, refrigeration components are fixedly installed on both sides of the frame, a connecting shaft is fixedly installed on one end of the cooling roller, the cooling roller and the connecting shaft are both hollow, one end of the connecting shaft extends into the refrigeration component, and the cooling roller is connected to the refrigeration component through the connecting shaft.

[0012] The present invention is further configured as follows: the cutting mechanism comprises an installation box, a slide plate, a cutting knife and a sliding rod, the installation box is fixedly installed inside the frame, the installation box is located between the pressing roller and the hot pressing sealing mechanism, a slide plate is slidably installed inside the installation box, the top end of the cutting knife is fixedly connected to the slide plate, and the bottom end of the cutting knife extends out of the installation box, both ends of the slide plate are fixedly connected to the sliding rod, both sides of the installation box are provided with a second slide groove, a second spring is arranged in the second slide groove, the top end of the second spring is fixedly connected to the sliding rod, and the bottom end of the second spring is fixedly connected to the bottom wall of the second slide groove, the sliding rod passes through the side wall of the frame, and the sliding rod and the frame slide up and down, a driving block is fixedly installed on the end of the sliding rod away from the slide plate, and a transmission component is arranged on the frame, and the transmission component is transmission-connected to the driving block.

[0013] The present invention is further configured as follows: the transmission assembly includes a driving wheel, a driven wheel, a transmission belt and an adjusting column, roller shafts are provided at both ends of the second feeding roller, and the two roller shafts respectively penetrate the two side walls of the frame, the driving wheel is fixedly sleeved on the roller shafts, the driven wheel is rotatably connected to the side wall of the frame, the driving wheel and the driven wheel are connected through a transmission belt, the driven wheel is located directly above the driving block, and an adjusting column is rotatably installed on the edge of the driven wheel, and when the driven wheel rotates, the adjusting column intermittently presses over the driving block, thereby pushing the driving block to move downward.

[0014] The present invention is further configured as follows: the distance measuring component comprises a transmitter and a receiver, the generator is fixedly mounted on the mounting seat, the receiver is fixedly mounted on the sliding seat, and the transmitter and the receiver are arranged opposite to each other.

[0015] The method for preparing OCA optical adhesive by the above-mentioned translucent OCA optical adhesive production equipment comprises the following steps:

[0016] S1. Fix the rolled OCA optical adhesive on the first feeding roller, fix two rolls of release film on two second feeding rollers respectively, and pass the OCA optical adhesive pulled from the first feeding roller between the two slitting rollers, and cut the edge of the OCA optical adhesive through the slitting rollers;

[0017] S2. The slit OCA optical adhesive passes through the two laminating rollers. At the same time, the two rolls of release film are pulled between the two laminating rollers. The two layers of release film are respectively attached to the upper and lower surfaces of the OCA optical adhesive by the extrusion of the two laminating rollers, and the width of the release film is greater than the width of the OCA optical adhesive.

[0018] S3. The pressed OCA optical adhesive passes from the bottom of the cutting mechanism, and the upper release film and the OCA optical adhesive are cut by the cutting mechanism to separate the OCA optical adhesive, and then passes between the two installation rollers, so that the two heat pressing rings are pressed on both sides of the release film respectively, and the edges of the two layers of release film are sealed by heat pressing, and then wound on the winding roller.

[0019] In summary, the present invention has the following beneficial effects: the present invention can protect the OCA optical adhesive by setting two layers of release films, and the width of the release film is greater than the width of the OCA optical adhesive, and the parts of the two layers of release films that exceed the OCA optical adhesive are hot-pressed and bonded together by a hot-pressing sealing mechanism, so that foreign dust and other impurities cannot enter the gap between the two layers of release films, thereby effectively protecting the OCA optical adhesive, and the OCA optical adhesive can be cut by setting a cutting mechanism, so that the OCA optical adhesive can be removed and used by directly tearing off the release film; by setting a distance measuring component and an adjusting roller, the rotation speed of the second motor can be automatically adjusted to ensure that the winding speed of the OCA optical adhesive edge material matches the slitting speed, thereby avoiding production stagnation or waste caused by speed mismatch, and the movable adjusting roller can reduce excessive stretching of the OCA optical adhesive edge material caused by the second motor rotating too fast, thereby preventing the OCA optical adhesive edge material from being torn off. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0022] Figure 3 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the heat-pressing sealing mechanism of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the refrigeration assembly, guide roller and cooling roller of the present invention;

[0027] Figure 8 It is a schematic diagram of the split structure of the guide roller and the cooling roller of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the adjusting roller and the distance measuring assembly of the present invention;

[0029] Fig.10 It is a structural schematic diagram of the cutting mechanism of the present invention;

[0030] Fig.11 It is a schematic diagram of the top view structure of the OCA optical adhesive produced by the present invention;

[0031] Fig.12 It is a schematic diagram of the side cross-sectional structure of the OCA optical adhesive produced by the present invention.

[0032] In the figure: 1, frame; 101, first slide; 2, first feeding roller; 3, winding roller; 4, second feeding roller; 401, roller shaft; 5, slitting roller; 6, annular cutter; 7, pressing roller; 8, support platform; 9, cutting mechanism; 91, installation box; 9101, second slide; 92, cutting knife; 93, slide plate; 94, slide bar; 95, second spring; 96, driving block; 10, installation roller; 11, hot pressing ring; 12, electric heating ring; 13, installation ring; 14, slitting knife; 1 5. Guide roller; 16. Cooling roller; 17. Connecting shaft; 18. Refrigeration assembly; 19. Rotating roller; 20. Winding wheel; 21. Adjusting roller; 22. Sliding seat; 23. Mounting seat; 24. First spring; 25. Transmitter; 26. Receiver; 27. Driving wheel; 28. Driven wheel; 29. ​​Transmission belt; 30. Adjusting column; 31. OCA optical glue; 32. Release film; 33. Easy-tear seam; 34. Sealing part; 35. First motor; 36. Second motor; 37. Control box. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] See also Figures 1 to 8In an embodiment of the present invention, a translucent OCA optical adhesive 31 production device includes a frame 1, a first feeding roller 2 and a winding roller 3 are rotatably installed on both sides of the frame 1, a slitting roller 5, a pressing roller 7, a cutting mechanism 9 and a hot pressing sealing mechanism are sequentially arranged between the first feeding roller 2 and the winding roller 3, two slitting rollers 5 and two pressing rollers 7 are each provided, and two annular cutters 6 are provided on the slitting roller 5, two second feeding rollers 4 are rotatably installed inside the frame 1, one of the second feeding rollers 4 is located above the pressing roller 7, and the other second feeding roller 4 is located below the pressing roller 7, and the hot pressing sealing mechanism includes a mounting roller 10 and two hot pressing rollers 11 and a hot pressing roller 12. The pressing ring 11, the installation roller 10 is rotatably installed inside the frame 1, and the two ends of the installation roller 10 are respectively fixedly sleeved with a hot pressing ring 11, and a first motor 35 is fixedly installed on one side of the frame 1, and the output end of the first motor 35 is connected to the winding roller 3 in a transmission manner; when in use, the rolled OCA optical glue 31 is fixed on the first feeding roller 2, and the two rolls of release film 32 are respectively fixed on the two second feeding rollers 4, and the OCA optical glue 31 passes through the two slitting rollers 5, and the edge of the OCA optical glue 31 is cut off by the slitting roller 5 to cut the OCA optical glue 31 to the required width, and the cut OCA optical glue 31 passes between the two pressing rollers 7 The OCA optical adhesive 31 is pressed together with the two pressing rollers 7 to make the two layers of release film 32 adhere to the upper and lower surfaces of the OCA optical adhesive 31, and the width of the release film 32 is greater than the width of the OCA optical adhesive 31. The pressed OCA optical adhesive 31 passes from under the cutting mechanism 9, and the upper release film 32 and the OCA optical adhesive 31 are cut by the cutting mechanism 9 to separate the OCA optical adhesive 31 for subsequent use, and then passes between the two installation rollers 10, so that the two heat pressing rings 11 are pressed on both sides of the release film 32 respectively, and the edges of the two layers of release film 32 are sealed by heat pressing. It is then wound around the winding roller 3, and the winding roller 3 is driven to rotate and wind up by the first motor 35; through the setting of two layers of release film 32, the OCA optical glue 31 can be protected, and the width of the release film 32 is greater than the width of the OCA optical glue 31, and the parts of the two layers of release film 32 exceeding the OCA optical glue 31 are hot-pressed and bonded together by a hot-pressing sealing mechanism, so that foreign dust and other impurities cannot enter the gap between the two layers of release film 32, thereby effectively protecting the OCA optical glue 31, and through the setting of the cutting mechanism 9, the OCA optical glue 31 can be cut off, so that the OCA optical glue 31 can be removed and used by directly tearing off the release film 32.

[0035] In this embodiment, preferably, both ends of the installation roller 10 are sleeved with electric heating rings 12, one side of the electric heating ring 12 is fixedly connected to the inner wall of the frame 1, and the other side of the electric heating ring 12 extends into the interior of the heat pressing ring 11, and the electric heating ring 12 and the heat pressing ring 11 are rotatably matched, and the electric heating ring 12 is heated by the internal electric heating wire, and the heat pressing ring 11 can be heated by the electric heating ring 12, so that the heat pressing ring 11 can perform heat pressing and sealing on the release film 32; both ends of the installation roller 10 are fixedly sleeved with installation rings 13, and the two installation rings 13 are fixedly sleeved. The ring 13 is located between the two heat-pressing rings 11, and a plurality of slitting knives 14 are fixedly installed on the outer peripheral wall of the mounting ring 13. The plurality of slitting knives 14 are distributed in a circular array with the axis of the mounting ring 13 as the array center. When in use, the slitting knives 14 penetrate the release film 32 located on the upper layer and will not cut the OCA optical adhesive 31, so that the prepared OCA optical adhesive 31 has a straight line easy-tear seam 33, so that when used later, the upper release film 32 can be directly torn off to facilitate the taking of the OCA optical adhesive 31 for use.

[0036] In this embodiment, preferably, two guide rollers 15 are provided on the inner side of the frame 1, and the two guide rollers 15 are provided between the winding roller 3 and the hot pressing sealing mechanism. Both ends of the guide roller 15 are rotatably connected with cooling rollers 16, and the diameter of the cooling roller 16 is larger than the diameter of the guide roller 15, so that the cooling roller 16 can fit with the thinner two layers of release film 32, and the guide roller 15 can fit with the thicker OCA optical glue 31 and the two layers of release film 32, so as to guide the OCA optical glue 31. Refrigeration components 18 are fixedly installed on both sides of the frame 1, and a connecting shaft 17 is fixedly installed on one end of the cooling roller 16. The cooling roller 16 and the connecting shaft 17 are fixedly installed on the two sides of the frame 1. The shafts 17 are all hollow, and one end of the connecting shaft 17 extends into the refrigeration component 18. The cooling roller 16 is connected to the refrigeration component 18 through the connecting shaft 17. The refrigeration component 18 includes a shell and a semiconductor refrigeration plate arranged on the shell. The cooling surface of the semiconductor refrigeration plate is located inside the shell. The shell, the connecting shaft 17 and the cooling roller 16 are filled with oil, so that the oil can flow between the shell and the cooling roller 16, so that the temperature of the cooling roller 16 can be reduced, and then the release film 32 passing between the two cooling rollers 16 can be cooled, so that the temperature of the sealing part is reduced, and the connecting shaft 17 rotates with the shell, and the connection is sealed.

[0037] See also Fig.11 and Fig.12The semi-transparent OCA optical adhesive 31 produced by the equipment includes an upper and lower release film 32. The OCA optical adhesive 31 is arranged between the two release films 32. The width of the two release films 32 is greater than the width of the OCA optical adhesive 31. The edges of the two release films 32 are sealed by hot pressing to form a sealing portion 34. The OCA optical adhesive 31 is cut into multiple sections by a cutting mechanism 9. An easy-tear seam 33 is provided on the edge of the upper release film 32, so that the upper release film 32 can be easily torn off from the OCA optical adhesive 31, so that the cut OCA optical adhesive 31 can be removed for use.

[0038] See also Figure 1 , Figure 2 and Fig.10In the embodiment of the present invention, the cutting mechanism 9 includes a mounting box 91, a slide plate 93, a cutting knife 92 and a slide bar 94. The mounting box 91 is fixedly installed inside the frame 1. The mounting box 91 is located between the pressing roller 7 and the hot pressing sealing mechanism. The mounting box 91 is slidably installed with a slide plate 93. The top of the cutting knife 92 is fixedly connected to the slide plate 93. The bottom end of the cutting knife 92 extends out of the mounting box 91. Both ends of the slide plate 93 are fixedly connected to the slide bar 94. Second slide grooves 9101 are provided on both sides of the mounting box 91. A second spring 95 is arranged in the second slide groove 9101. The top of the second spring 95 is fixedly connected to the slide bar 94. The bottom of the second spring 95 The end is fixedly connected to the bottom wall of the second slide groove 9101, the slide bar 94 passes through the side wall of the frame 1, and the slide bar 94 slides up and down with the frame 1, and the end of the slide bar 94 away from the slide plate 93 is fixedly installed with a drive block 96, and the frame 1 is provided with a transmission component, and the transmission component is transmission-connected with the drive block 96, and a support table 8 is fixedly installed inside the frame 1, and the support table 8 is located directly below the cutting knife 92. The OCA optical glue 31 can be supported by the support table 8 to facilitate the cutting process; the transmission component includes a driving wheel 27, a driven wheel 28, a transmission belt 29 and an adjusting column 30, and both ends of the second feeding roller 4 are provided with roller shafts 40 1, two roller shafts 401 respectively penetrate the two side walls of the frame 1, the driving wheel 27 is fixedly sleeved on the roller shaft 401, and the driven wheel 28 is rotatably connected to the side wall of the frame 1. The driving wheel 27 and the driven wheel 28 are connected by a transmission belt 29. The driven wheel 28 is located directly above the driving block 96. The edge of the driven wheel 28 is rotatably installed with an adjusting column 30. When the driven wheel 28 rotates, the adjusting column 30 intermittently presses on the driving block 96, thereby pushing the driving block 96 to move downward. Every time the driven wheel 28 rotates once, the cutting knife 92 cuts once; when the second feeding roller 4 rotates, the second feeding roller 4 drives the driving wheel 27 to rotate through the roller shaft 401, and the driving wheel When 27 rotates, the driven wheel 28 is driven to rotate through the transmission belt 29, thereby driving the adjusting column 30 to rotate in a circular trajectory, so that the adjusting column 30 intermittently presses over the driving block 96, thereby pushing the driving block 96 to move downward, and the driving block 96 pushes the slide plate 93 to move downward through the slide bar 94, thereby driving the cutting knife 92 to move downward to cut the middle part of the OCA optical glue 31 and the upper release film 32. When the adjusting column 30 is separated from the driving block 96, under the elastic action of the second spring 95, the slide bar 94 can move upward to reset, thereby driving the cutting knife 92 to reset through the slide plate 93; the transmission assembly is provided with two groups to drive the two driving blocks 96 to move synchronously.

[0039] See also Figure 3 , Figure 4 and Fig. 9In the embodiment of the present invention, a rotating roller 19 is arranged below the first feeding roller 2, and both ends of the rotating roller 19 are rotatably connected to the frame 1. Two winding wheels 20 are fixedly mounted on the rotating roller 19. A second motor 36 is fixedly installed on one side of the frame 1. The output end of the second motor 36 is transmission-connected to the rotating roller 19. The rotating roller 19 can be driven to rotate by the second motor 36, thereby driving the winding wheel 20 to rotate. The OCA optical adhesive 31 edge material cut from the slitting roller 5 is wound on the winding wheel 20 for recycling.

[0040] As the OCA optical adhesive 31 is wound on the winding wheel 20, the OCA optical adhesive 31 on the winding wheel 20 gradually increases, and the radius of the OCA optical adhesive 31 gradually increases. In order to ensure that the winding linear speed of the OCA optical adhesive 31 remains constant, it is necessary to gradually reduce the rotation speed of the second motor 36. Therefore, the following structure is set for adjustment;

[0041] The side wall of the frame 1 is provided with a first slide groove 101, a mounting seat 23 is fixedly installed on one side of the first slide groove 101, a slide seat 22 is slidably installed on the other side of the first slide groove 101, the mounting seat 23 and the slide seat 22 are elastically connected by a first spring 24, an adjusting roller 21 is rotatably installed on one side of the slide seat 22, the cut OCA optical adhesive 31 is bypassed from the adjusting roller 21 and then wound onto the winding wheel 20, a distance measuring component is arranged between the mounting seat 23 and the slide seat 22, a control box 37 is installed on the frame 1, a PLC controller is arranged in the control box 37, and a second The motor 36 is connected to the distance measuring component signal through the PLC controller, and the speed of the second motor 36 can be controlled by the PLC controller. When the speed of the second motor 36 is too fast, the winding speed of the OCA optical adhesive 31 edge material is greater than the speed at which the OCA optical adhesive 31 edge material is cut from the slitting roller 5. At this time, the OCA optical adhesive 31 edge material gradually tightens, and the pressure of the OCA optical adhesive 31 edge material on the adjusting roller 21 increases, so that the adjusting roller 21 moves to the left, thereby increasing the distance between the slide 22 and the mounting seat 23. The distance measuring component detects that the distance between the slide 22 and the mounting seat 23 increases, and can send a signal to the PLC controller. C controller, controls the motor speed to decrease through the PLC controller, and when the speed of the second motor 36 is too slow, the winding speed of the OCA optical adhesive 31 edge material is less than the speed at which the OCA optical adhesive 31 edge material is cut from the slitting roller 5. At this time, the OCA optical adhesive 31 edge material gradually relaxes, and the pressure of the OCA optical adhesive 31 edge material on the adjusting roller 21 is reduced, so that the adjusting roller 21 moves to the right under the action of the first spring 24, thereby reducing the distance between the slide 22 and the mounting seat 23. The distance measuring component detects that the distance between the slide 22 and the mounting seat 23 is reduced, and a signal can be sent to the PLC controller, and the PLC controller is connected to the PLC controller through the PLC controller. The LC controller controls the motor to increase its speed, so that the speed of the second motor 36 can be adaptively adjusted according to actual conditions, so that the linear speed of the OCA optical glue 31 edge material wound onto the winding wheel 20 remains constant; through the setting of the distance measuring component and the adjustment roller 21, the speed of the second motor 36 can be automatically adjusted to ensure that the winding speed of the OCA optical glue 31 edge material matches the slitting speed, thereby avoiding production stagnation or waste caused by speed mismatch, and the movable adjustment roller 21 can reduce the excessive stretching of the OCA optical glue 31 edge material caused by the excessive speed of the second motor 36, and prevent the OCA optical glue 31 edge material from being torn off.

[0042] The ranging component includes a transmitter 25 and a receiver 26. The generator is fixedly mounted on the mounting seat 23, and the receiver 26 is fixedly mounted on the slide seat 22. The transmitter 25 and the receiver 26 are arranged opposite to each other. The transmitter 25 emits infrared rays for ranging. Both the transmitter 25 and the receiver 26 are prior arts and will not be described in detail here.

[0043] The present invention also discloses a method for preparing a translucent OCA optical adhesive 31, comprising the following steps:

[0044] S1. Fix the rolled OCA optical adhesive 31 on the first feeding roller 2, fix two rolls of release film 32 on two second feeding rollers 4 respectively, and pass the OCA optical adhesive 31 drawn from the first feeding roller 2 between the two slitting rollers 5, and cut the edge of the OCA optical adhesive 31 by the slitting roller 5;

[0045] S2. The slit OCA optical adhesive 31 passes between the two laminating rollers 7. At the same time, the two rolls of release film 32 are pulled between the two laminating rollers 7. The two layers of release film 32 are respectively attached to the upper and lower surfaces of the OCA optical adhesive 31 by the extrusion of the two laminating rollers 7, and the width of the release film 32 is greater than the width of the OCA optical adhesive 31.

[0046] S3. The pressed OCA optical adhesive 31 passes from under the cutting mechanism 9, and the upper release film 32 and the OCA optical adhesive 31 are cut by the cutting mechanism 9 to separate the OCA optical adhesive 31, and then passes between the two mounting rollers 10, so that the two heat pressing rings 11 are respectively pressed on both sides of the release film 32, and the edges of the two layers of release film 32 are sealed by heat pressing, and then wound on the winding roller 3.

[0047] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A translucent OCA optical adhesive production device, comprising a frame (1), wherein a first feeding roller (2) and a winding roller (3) are rotatably mounted on both sides of the frame (1), and the device is characterized in that: A slitting roller (5), a pressing roller (7), a cutting mechanism (9) and a hot-pressing sealing mechanism are arranged in sequence between the first feeding roller (2) and the winding roller (3); two slitting rollers (5) and two pressing rollers (7) are each provided; two annular cutters (6) are provided on the slitting roller (5); two second feeding rollers (4) are rotatably installed inside the frame (1); one of the second feeding rollers (4) is located above the pressing roller (7) and the other second feeding roller (4) is located below the pressing roller (7); the hot-pressing sealing mechanism comprises a mounting roller (10) and two hot-pressing rings (11); the mounting roller (10) is rotatably installed inside the frame (1); Installed inside the frame (1), the two ends of the installation roller (10) are respectively fixedly sleeved with heat pressing rings (11), a first motor (35) is fixedly installed on one side of the frame (1), and the output end of the first motor (35) is connected to the winding roller (3) in a transmission manner; a rotating roller (19) is arranged below the first feeding roller (2), the two ends of the rotating roller (19) are connected to the frame (1) in a rotational manner, and two winding wheels (20) are fixedly sleeved on the rotating roller (19); a second motor (36) is fixedly installed on one side of the frame (1), and the output end of the second motor (36) is connected to the rotating roller (19) in a transmission manner; Both ends of the installation roller (10) are sleeved with electric heating rings (12), one side of the electric heating ring (12) is fixedly connected to the inner wall of the frame (1), and the other side of the electric heating ring (12) extends into the interior of the heat pressing ring (11), and the electric heating ring (12) and the heat pressing ring (11) are rotatably matched; Both ends of the installation roller (10) are fixedly sleeved with installation rings (13), the two installation rings (13) are located between the two heat pressing rings (11), and the outer peripheral walls of the installation rings (13) are fixedly mounted with a plurality of slitting knives (14), the plurality of slitting knives (14) are distributed in a ring array with the axis of the installation ring (13) as the array center.

2. The translucent OCA optical adhesive production equipment according to claim 1, characterized in that: A first slide groove (101) is provided on the side wall of the frame (1); a mounting seat (23) is fixedly mounted on one side of the first slide groove (101); a slide seat (22) is slidably mounted on the other side of the first slide groove (101); the mounting seat (23) and the slide seat (22) are elastically connected via a first spring (24); an adjusting roller (21) is rotatably mounted on one side of the slide seat (22); the cut OCA optical adhesive is passed around the adjusting roller (21) and then wound onto a winding wheel (20); a distance measuring component is arranged between the mounting seat (23) and the slide seat (22); a control box (37) is installed on the frame (1); a PLC controller is arranged in the control box (37); and the second motor (36) is connected to the distance measuring component signal via the PLC controller.

3. The translucent OCA optical adhesive production equipment according to claim 1, characterized in that: Two guide rollers (15) are arranged on the inner side of the frame (1), and the two guide rollers (15) are arranged between the winding roller (3) and the hot pressing sealing mechanism. Both ends of the guide rollers (15) are rotatably connected to cooling rollers (16), and the diameter of the cooling rollers (16) is larger than the diameter of the guide rollers (15). Refrigeration components (18) are fixedly installed on both sides of the frame (1), and a connecting shaft (17) is fixedly installed on one end of the cooling roller (16). The cooling roller (16) and the connecting shaft (17) are both hollow, and one end of the connecting shaft (17) extends into the refrigeration component (18). The cooling roller (16) is connected to the refrigeration component (18) via the connecting shaft (17).

4. The translucent OCA optical adhesive production equipment according to claim 1, characterized in that: The cutting mechanism (9) comprises a mounting box (91), a slide plate (93), a cutting knife (92) and a slide bar (94); the mounting box (91) is fixedly mounted inside the frame (1); the mounting box (91) is located between the pressing roller (7) and the hot pressing sealing mechanism; a slide plate (93) is slidably mounted inside the mounting box (91); the top end of the cutting knife (92) is fixedly connected to the slide plate (93); the bottom end of the cutting knife (92) extends out of the mounting box (91); both ends of the slide plate (93) are fixedly connected to the slide bar (94); and both sides of the mounting box (91) are provided with a second A slide groove (9101), a second spring (95) is arranged in the second slide groove (9101), the top end of the second spring (95) is fixedly connected to the slide rod (94), the bottom end of the second spring (95) is fixedly connected to the bottom wall of the second slide groove (9101), the slide rod (94) passes through the side wall of the frame (1), and the slide rod (94) and the frame (1) slide up and down, and a driving block (96) is fixedly installed at one end of the slide rod (94) away from the slide plate (93), and a transmission component is arranged on the frame (1), and the transmission component is in transmission connection with the driving block (96).

5. The translucent OCA optical adhesive production equipment according to claim 4, characterized in that: The transmission assembly comprises a driving wheel (27), a driven wheel (28), a transmission belt (29) and an adjustment column (30); roller shafts (401) are provided at both ends of the second feeding roller (4); the two roller shafts (401) respectively penetrate the two side walls of the frame (1); the driving wheel (27) is fixedly sleeved on the roller shafts (401); the driven wheel (28) is rotatably connected to the side wall of the frame (1); the driving wheel (27) and the driven wheel (28) are transmission-connected via a transmission belt (29); the driven wheel (28) is located directly above the driving block (96); an adjustment column (30) is rotatably mounted on the edge of the driven wheel (28); when the driven wheel (28) rotates, the adjustment column (30) intermittently presses over the driving block (96), thereby pushing the driving block (96) to move downward.

6. The translucent OCA optical adhesive production equipment according to claim 2, characterized in that: The distance measuring component comprises a transmitter (25) and a receiver (26), the transmitter is fixedly mounted on the mounting seat (23), the receiver (26) is fixedly mounted on the sliding seat (22), and the transmitter (25) and the receiver (26) are arranged opposite to each other.

7. A method for preparing OCA optical adhesive using the translucent OCA optical adhesive production equipment according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Fixing the rolled OCA optical adhesive on the first feeding roller (2), fixing two rolls of release film (32) on two second feeding rollers (4) respectively, and passing the OCA optical adhesive drawn from the first feeding roller (2) through between two slitting rollers (5), and cutting the edge of the OCA optical adhesive by the slitting rollers (5); S2. The slit OCA optical adhesive passes between the two laminating rollers (7), and at the same time, the two rolls of release film (32) are pulled between the two laminating rollers (7), and the two layers of release film (32) are respectively attached to the upper and lower surfaces of the OCA optical adhesive by the extrusion of the two laminating rollers (7), and the width of the release film (32) is greater than the width of the OCA optical adhesive; S3. The pressed OCA optical adhesive passes from the bottom of the cutting mechanism (9), and the upper release film (32) and the OCA optical adhesive are cut by the cutting mechanism (9) to separate the OCA optical adhesive, and then passes between the two installation rollers (10), so that the two heat pressing rings (11) are pressed on both sides of the release film (32) respectively, and the edges of the two layers of release film (32) are sealed by heat pressing, and then wound on the winding roller (3).

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