Die-cutting device and process for preventing bubble generation

Abstract

The present invention discloses a die-cutting device and process for preventing bubble generation, belonging to the technical field of die-cutting equipment, and comprises: a feeding unit, in which a feeding roller is installed, and an OCA film is rolled on the feeding roller; a plurality of transmission steel rollers are arranged; a bottom film conveying unit, located below the feeding unit, and a silicone film is conveyed in the bottom film conveying unit; a first rubber roller, rotatably installed above the transmission steel roller located in the first position; a die-cutting mechanism, arranged above the transmission steel roller located in the second position, and the die-cutting mechanism adopts a rolling method to die-cut the OCA film; a waste discharge unit, in which a waste roller is arranged, and the waste roller rewinds the OCA film frame waste and the adhesive tape; a pressing detection mechanism, arranged behind the waste discharge unit; the present invention can lubricate the die-cutting blade with oil, so as to facilitate the subsequent smooth waste discharge, and at the same time, perform rolling repair on the die-cutting products with deformation defects to avoid bubble generation.

Description

Technical Field

[0001] The invention belongs to the technical field of die-cutting equipment, and in particular relates to a die-cutting device and process for preventing the generation of bubbles. Background Art

[0002] OCA is an optical acrylic adhesive made of substrate-free, high-transparency double-sided laminating tape with average cohesion and very high fluidity. It is very easy to deform after being squeezed. At present, it is the best adhesive for touch screens, mainly used for bonding materials on touch screens to achieve capacitive touch sensing effects, and requires very high cleanliness.

[0003] At present, in the OCA die-cutting process, bubbles often occur after the glue edge of the die-cut product is compounded with the light film. The main reason is that there are process defects in the waste discharge of the outer frame during the die-cutting of the product, which causes the product glue to be deformed. In the prior art, such as the invention patent with the publication number CN107775696B, it mainly adopts the method of setting different die-cutting angles between the first workstation, the second workstation and the third workstation, so as to flatten the OCA die-cutting material and avoid excessive force on the cutting part. Although it can avoid the product edge from being damaged by die-cutting to a certain extent and avoid the generation of bubbles in the later stage, the use of multiple die-cutting stations leads to complex production scheduling and coordination work, which greatly increases the difficulty of management and calibration, especially in the production of multiple varieties and small batches, and increases the operating cost;

[0004] Therefore, it is necessary to provide a die-cutting device and process for preventing the generation of bubbles to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solution: a die-cutting device for preventing the generation of bubbles, comprising:

[0006] A feeding unit, wherein a feeding roller is installed inside the feeding roller, and an OCA film is rolled up on the feeding roller;

[0007] There are multiple transmission steel rollers arranged and disposed, and the transmission steel rollers are distributed behind the loading unit and are used for transmitting and loading the OCA film. The transmission steel rollers are all equipped with transmission parts;

[0008] A bottom film conveying unit is located below the feeding unit, wherein a silicone film is conveyed in the bottom film conveying unit, and the silicone film is used to drag the bottom of the OCA film;

[0009] The first rubber roller is rotatably mounted above the transmission steel roller located at the first position, and the first rubber roller cooperates with the transmission steel roller below to laminate the silicone film and the OCA film;

[0010] A winding unit is arranged above the feeding unit, and the winding unit is used to wind up the light film covered on the surface of the OCA film;

[0011] A die-cutting mechanism is arranged above the transmission steel roller located at the second position, and the die-cutting mechanism uses a roller pressing method to perform die-cutting processing on the OCA film;

[0012] A waste discharge unit, in which a tape is rolled up for bonding with the frame waste, and a waste roller is arranged in the waste discharge unit, and the waste roller rewinds the OCA film frame waste and the tape;

[0013] A pressing detection mechanism is arranged behind the waste discharge unit, and the pressing detection mechanism integrates and flattens the die-cut products on the surface of the OCA film after the waste discharge. A visual sensor is arranged in the pressing detection mechanism, and the visual sensor scans the surface defects of the die-cut products, and the pressing detection mechanism appropriately repairs the defects of the die-cut products;

[0014] The second rubber roller is rotatably mounted above the transmission steel roller located at the third position. A film placing unit is arranged behind the second rubber roller. A light film is rolled up in the film placing unit. The light film is adhered to the surface of the OCA film through the second rubber roller.

[0015] Further, as a preference, the die-cutting mechanism comprises:

[0016] A roller frame, inside which a roller cutter is horizontally rotatably connected via a bearing, and the roller cutter contacts and abuts against the surface of the OCA film;

[0017] A side bracket is vertically slidably mounted on one side of the roller frame, an oil roller is horizontally rotatably connected in the side bracket, the oil roller is in close contact with the roller cutter, and the oil roller is used to lubricate the die-cutting blade on the surface of the roller cutter with oil;

[0018] A threaded column is vertically symmetrically fixed on the side bracket, one end of the threaded column is slidably connected to the roller frame, and an adjustment sleeve is rotatably connected to the roller frame, and the adjustment sleeve is threadedly connected to the threaded column;

[0019] A support spring is sleeved on the threaded column, and the upper and lower ends of the support spring are respectively in contact with the roller frame and the side bracket;

[0020] The tail scraper is horizontally fixed on the roller frame. The cross section of the tail scraper is an inverted L-shaped structure, and a vertically arranged oil scraper is fixed inside the tail scraper. A gap is left between the oil scraper and the roller cutter.

[0021] Further, preferably, the oil roller comprises:

[0022] A roller shaft is rotatably connected to the side bracket, and one end of the roller shaft is coaxially slidably connected to a roller body;

[0023] An oil cavity is provided in the roller body, a plurality of oil holes are evenly distributed on the roller body, each of the oil holes is connected to the oil cavity, an oil guide groove is provided in the center of one side of the oil cavity in the roller body, and an oil pipeline is connected to the outside of the oil guide groove;

[0024] The sponge oil sleeve is sleeved outside the roller body.

[0025] Further, preferably, the rotation direction of the roller shaft is opposite to the rotation direction of the roller cutter;

[0026] A shaft sleeve is fixed on the side of the side bracket away from the roller shaft, the center of the roller body is inserted into the shaft sleeve, a piston is slidably connected inside the shaft sleeve, and the roller body and the piston are rotationally connected; and a pulse air pipe is connected to the outside of the shaft sleeve, and the pulse air pipe drives the roller body to move axially back and forth under the action of continuous suction and exhaust.

[0027] Furthermore, as a preference, a pressure roller is also provided on the side bracket above the oil roller, a plurality of mounting grooves are distributed on the circumferential side wall of the pressure roller, each of the mounting grooves is slidably connected with an oil squeezing plate, and an air cavity is provided in the pressure roller, the air cavity is connected to the mounting groove, so that air pressure pushes each of the oil squeezing plates to slide radially, and an air guide channel is also provided at one end of the pressure roller, the air guide channel is connected to the air cavity.

[0028] Further, preferably, the pressing detection mechanism comprises:

[0029] A frame, wherein two film-winding rollers are rotatably mounted on the left side thereof and are arranged vertically; and two film-collecting rollers are rotatably mounted on the right side thereof and are arranged vertically; and plastic film is wound between each of the film-winding rollers and the film-collecting rollers;

[0030] There are four film guide rollers which are symmetrically distributed, and two of them are on the same horizontal plane to transfer the plastic film horizontally;

[0031] The film pressing roller groups are multiple and horizontally distributed, each of which is composed of two pressing rollers distributed up and down, and the pressing rollers are respectively in contact with the upper and lower parts of the two plastic films;

[0032] A pressurizing cylinder is arranged one by one corresponding to each of the pressing rollers. The pressurizing cylinder is vertically connected to the frame, and the telescopic end of the pressurizing cylinder is connected to the pressing roller. The plastic film and the OCA film are transmitted synchronously, and the rotation direction of the pressing roller is consistent with the transmission direction of the OCA film, and its rotation speed is higher than the transmission speed of the OCA film.

[0033] Further, as a preference, a support arm is rotatably connected to the film guide roller located on the upper left side of the frame, the support arm is hinged to the frame, and an adjustable telescopic rod is hinged in the frame, one end of the adjustable telescopic rod is connected to the support arm;

[0034] A conversion roller is arranged in the frame at the front side of the film pressing roller group, the conversion roller is in contact with the plastic film located below, and a plurality of convex rollers are distributed on the conversion roller.

[0035] Further, as a preference, the visual sensor is arranged between the conversion roller and the film guide roller, and is vertically facing the plastic film above; the film guide roller can be rotated and adjusted along with the support arm, so that the plastic film above is separated from the OCA film;

[0036] The diameters of the convex rollers are different, and each of the convex rollers is rotatably connected to the conversion roller.

[0037] Further, preferably, the conversion roller makes the corresponding convex roller abut against the surface of the plastic film below during rotation adjustment, and the convex roller forms a bottom convex support for the plastic film and the OCA film.

[0038] Further, as a preferred embodiment, a die-cutting process for preventing the generation of bubbles comprises the following steps:

[0039] S1. Material preparation and pretreatment: select OCA film, silicone film and plastic film of corresponding thickness specifications according to production requirements, ensure that their surfaces are clean and dust-free, and check whether there are defects, bubbles and scratches on the OCA film; then place the OCA film, silicone film and plastic film at the corresponding workstations;

[0040] S2. The bottom film is dragged and peeled off. The silicone film and the OCA film are attached to each other at the first rubber roller. At this time, the rewinding unit peels off and collects the light film covering the surface of the OCA film;

[0041] S3. Oiling die-cutting: When the OCA film passes through the die-cutting mechanism, the roller cutter in the die-cutting mechanism can perform die-cutting processing on the OCA film by rolling. In each die-cutting operation, the oil roller in the die-cutting mechanism can lubricate the blade of the roller cutter during continuous axial sliding, thereby increasing the die-cutting separation effect and making the outer frame waste discharge smoother, thereby preventing the die-cut product from being deformed;

[0042] S4. Die-cutting waste discharge and surface pressing. The waste roller in the waste discharge unit reels the OCA film frame waste and the tape. At the same time, the visual sensor scans the die-cut product for surface defects. The convex roller in the pressing detection mechanism convexly carries the die-cut product with deformation defects, so that the deformed part of the die-cut product achieves a warping effect, and then it is covered with plastic film again, and the pressing roller squeezes and repairs it at the same time;

[0043] S5. Final lamination: the light film is bonded to the surface of the OCA film by the second rubber roller through the film placing unit.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] In the OCA die-cutting process of the present invention, the die-cutting mechanism adopted can lubricate the blade of the roller knife through an oil roller before each die-cutting, thereby increasing the die-cutting separation effect, making the outer frame waste discharge smoother, and avoiding the die-cut products from being deformed when being discharged. The pressing detection mechanism also provided therein can carry the die-cut products with deformation defects by convex rollers of corresponding specifications, so that the deformed parts of the die-cut products can achieve the effect of warping, expel air, and prevent the generation of bubbles, so that the die-cut products can be re-adhered and then extruded and repaired by the pressing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0047] Figure 2 It is a structural schematic diagram of the die-cutting mechanism in the present invention;

[0048] Figure 3 The structural section of the die-cutting mechanism of the present invention is Figure 1 ;

[0049] Figure 4 The structural section of the die-cutting mechanism of the present invention is Figure 2 ;

[0050] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0051] Figure 6 It is a structural schematic diagram of the pressing detection mechanism in the present invention;

[0052] Figure 7 It is a schematic diagram of the internal structure of the pressing detection mechanism in the present invention;

[0053] Figure 8 for Figure 7 A magnified schematic diagram of the structure at B in the middle;

[0054] In the figure: 1. feeding unit; 11. transmission steel roller; 12. transmission unit; 13. bottom film conveying unit; 14. first rubber roller; 15. winding unit; 16. waste discharge unit; 17. waste roller; 18. second rubber roller; 19. film unwinding unit; 2. die-cutting mechanism; 21. roller frame; 22. roller knife; 23. side bracket; 24. threaded column; 25. adjustment sleeve; 26. tail scraper; 3. pressing detection mechanism; 31. Frame; 32, film winding roller; 33, film collecting roller; 34, film guide roller; 35, film pressing roller group; 36, support arm; 37, conversion roller; 38, convex roller; 4, oil roller; 41, roller shaft; 42, roller body; 43, oil chamber; 44, oil hole; 45, oil guide groove; 46, oil pipeline; 47, sponge oil sleeve; 48, shaft sleeve; 49, piston; 5, pressure roller; 51, oil squeezing plate; 52, air chamber; 53, air guide channel. DETAILED DESCRIPTION

[0055] See also Figure 1-Figure 8 In an embodiment of the present invention, a die-cutting device for preventing the generation of bubbles comprises:

[0056] A feeding unit 1, wherein a feeding roller is installed inside the feeding roller, and an OCA film is rolled on the feeding roller;

[0057] A plurality of transmission steel rollers 11 are arranged and disposed, and the transmission steel rollers 11 are distributed behind the loading unit 1 and are used for transmitting and loading the OCA film. A transmission part 12 is installed outside the transmission steel rollers 11;

[0058] The bottom film conveying unit 13 is located below the loading unit. A silicone film is conveyed in the bottom film conveying unit 13. The silicone film is used to drag the OCA film to the bottom.

[0059] The first rubber roller 14 is rotatably mounted above the transmission steel roller 11 located at the first position, and the first rubber roller 14 cooperates with the transmission steel roller 11 below to laminate the silicone film and the OCA film;

[0060] The rewinding unit 15 is arranged above the feeding unit 1, and the rewinding unit 15 rewinds the light film covered on the surface of the OCA film;

[0061] The die-cutting mechanism 2 is arranged above the transmission steel roller 11 located at the second position, and the die-cutting mechanism 2 uses a rolling method to die-cut the OCA film;

[0062] A waste discharge unit 16, in which a tape is rolled up for bonding with the frame waste, and a waste roller 17 is arranged in the waste discharge unit 16, and the waste roller 17 reels the OCA film frame waste and the tape;

[0063] The pressing detection mechanism 3 is arranged at the rear of the waste discharge unit 16. The pressing detection mechanism 3 integrates and flattens the die-cut products on the surface of the OCA film after the waste discharge. The pressing detection mechanism 3 is provided with a visual sensor. The visual sensor scans the surface defects of the die-cut products, and the pressing detection mechanism 3 appropriately repairs the defects of the die-cut products; that is, for the die-cut products with deformation defects, the pressing detection mechanism can flatten and repair them and remove air, so that the surface of the die-cut products can be flattened to avoid bubbles when the subsequent light film is covered;

[0064] The second rubber roller 18 is rotatably mounted above the transmission steel roller 11 located at the third position. A film placing unit 19 is arranged behind the second rubber roller 18 . A light film is rolled up in the film placing unit 19 . The light film is bonded to the surface of the OCA film through the second rubber roller 18 .

[0065] In this embodiment, the die-cutting mechanism 2 includes:

[0066] A roller frame 21, inside which a roller cutter 22 is horizontally rotatably connected via a bearing, and the roller cutter 22 contacts and abuts against the surface of the OCA film;

[0067] The side bracket 23 is vertically slidably mounted on one side of the roller frame 21. An oil roller 4 is horizontally rotatably connected inside the side bracket 23. The oil roller 4 is in close contact with the roller cutter 22. The oil roller 4 is used to lubricate the die-cutting blade on the surface of the roller cutter 22; thereby, the OCA film outer frame is more smoothly discharged and the die-cutting product is prevented from being deformed by the belt;

[0068] The threaded column 24 is vertically symmetrically fixed on the side bracket 23, one end of the threaded column 24 is slidably connected to the roller frame 21, and the roller frame 21 is rotatably connected with an adjustment sleeve 25, and the adjustment sleeve 25 is threadedly connected to the threaded column 24; wherein the adjustment sleeve 25 can effectively adjust the surface contact pressure between the oil roller 4 in the side bracket 23 and the roller cutter 22 to ensure the oiling effect;

[0069] A support spring is sleeved on the threaded column 24, and the upper and lower ends of the support spring are respectively in contact with the roller frame 21 and the side bracket 23;

[0070] The tail scraper 26 is horizontally fixed on the roller frame 21. The cross-section of the tail scraper 26 is an inverted L-shaped structure, and a vertically arranged scraper is fixed inside it. A gap is left between the scraper and the roller cutter 22, which can effectively scrape off excess oil and prevent the oil from soaking the surface of the OCA film.

[0071] As a preferred embodiment, the oil roller 4 comprises:

[0072] A roller shaft 41 is rotatably connected to the side bracket 23, and one end of the roller shaft 41 is coaxially slidably connected to a roller body 42;

[0073] An oil cavity 43 is provided in the roller body 42. A plurality of oil holes 44 are evenly distributed on the roller body 42. Each of the oil holes 44 is connected to the oil cavity 43. An oil guide groove 45 is provided in the center of one side of the oil cavity 43 in the roller body 42. An oil delivery pipe 46 is connected to the outside of the oil guide groove 45.

[0074] The sponge oil sleeve 47 is sleeved outside the roller body 42 , and the oil can be evenly soaked in the sponge oil sleeve 47 through the oil holes 44 , so that the oil is spread on the roller cutter 22 through the sponge oil sleeve 47 .

[0075] In this embodiment, the rotation direction of the roller shaft 41 is opposite to the rotation direction of the roller cutter 22;

[0076] A shaft sleeve 48 is fixed on the side of the side bracket 23 away from the roller shaft 41, and the center of the roller body 42 is connected to the shaft sleeve 48. A piston 49 is slidably connected in the shaft sleeve 48, and the roller body 42 is rotatably connected to the piston 49; and the shaft sleeve 48 is connected to the outside with a pulse air pipe, and the pulse air pipe drives the roller body 42 to move axially back and forth under the action of continuous exhaust and suction. On the one hand, the sponge oil sleeve 47 in the oil roller can spread the oil along the circumferential direction of the roller cutter 22 during the rotation of the roller body 42, and on the other hand, the sponge oil sleeve 47 can be spread along the axial direction of the roller cutter 22 during the continuous axial back and forth movement of the roller body 42, thereby ensuring that the blade of the roller cutter 22 can be evenly oiled and lubricated, thereby improving the die-cutting and separation effect of the roller cutter 22 on the OCA film.

[0077] In this embodiment, a pressure roller 5 is further provided on the side bracket 23 above the oil roller 4, and a plurality of mounting grooves are distributed on the circumferential side wall of the pressure roller 5, each of the mounting grooves is slidably connected with an oil squeezing plate 51, and an air cavity 52 is provided in the pressure roller 5, and the air cavity 52 is connected to the mounting groove, so that the air pressure pushes each of the oil squeezing plates 51 to slide radially, and an air guide channel 53 is further provided at one end of the pressure roller 5, and the air guide channel 53 is connected to the air cavity 52. ​​The pressure roller 5 can form different intensities of extrusion effects on the sponge oil sleeve 47 through the oil squeezing plate 51, so that the oil can seep out in a certain amount and cover the surface of the sponge oil sleeve 47, thereby further controlling the oiling effect of the oil roller 4 on the surface of the roller cutter 22, and ensuring that the blade of the roller cutter 22 is completely lubricated.

[0078] In this embodiment, the pressing detection mechanism 3 includes:

[0079] A frame 31 is provided with two film-winding rollers 32 rotatably mounted on the left side thereof and two film-collecting rollers 33 rotatably mounted on the right side thereof. Plastic film is wound between each of the film-winding rollers 32 and the film-collecting rollers 33.

[0080] The film guide rollers 34 are four symmetrically distributed, and two of the film guide rollers 34 located at the same horizontal plane transmit the plastic film horizontally;

[0081] The film pressing roller group 35 is a plurality of horizontally distributed ones, each of which is composed of two pressing rollers distributed up and down, and the pressing rollers are respectively in contact with the upper and lower parts of the two plastic films;

[0082] A pressurizing cylinder is arranged one by one corresponding to each of the pressing rollers. The pressurizing cylinder is vertically connected to the frame 31, and the telescopic end of the pressurizing cylinder is connected to the pressing roller, so as to adjust the vertical displacement of each pressing roller, thereby changing the rolling effect of the film pressing roller group 35 on the OCA film; the plastic film and the OCA film are transmitted synchronously, and the rotation direction of the pressure roller is consistent with the transmission direction of the OCA film, and its rotation speed is higher than the transmission speed of the OCA film. That is to say, the OCA film after waste discharge can be surface-pressed by the film pressing roller group 35, thereby expelling air and avoiding the occurrence of bubbles during light film covering in the later stage.

[0083] As a preferred embodiment, the film guide roller 34 located on the upper left side of the frame 31 is rotatably connected to a support arm 36, the support arm 36 is hinged to the frame 31, and an adjustable telescopic rod is hinged in the frame 31, one end of the adjustable telescopic rod is connected to the support arm 36;

[0084] A conversion roller 37 is provided in the frame 31 at the front side of the film pressing roller group 35. The conversion roller 37 is in contact with the plastic film located below. A plurality of convex rollers 38 are distributed on the conversion roller 37. The conversion roller 37 can be vertically slidably adjusted on the frame 31, and a pressurized cylinder is also provided below the conversion roller 37 for adjusting the vertical displacement of the conversion roller 37.

[0085] In this embodiment, the visual sensor is disposed between the conversion roller 37 and the film guide roller 34, and is vertically facing the upper plastic film; the film guide roller 34 can be rotated and adjusted along with the support arm 36, so that the upper plastic film is separated from the OCA film;

[0086] The diameters of the convex rollers 38 are different, and each of the convex rollers 38 is rotatably connected to the conversion roller 37 .

[0087] In this embodiment, the conversion roller 37 is rotated and adjusted so that the corresponding convex roller 38 rests against the surface of the plastic film below. At this time, the convex roller 38 forms a bottom convex support for the plastic film and the OCA film. Especially for die-cut products with deformation defects, a convex roller of appropriate specifications is selected according to the die-cut shape and the thickness of the OCA film. At this time, the conversion roller 37 is lifted upward by the pressurized cylinder below it, and the OCA film forms a local convexity. When the die-cut product with deformation defects passes through this position, the deformed part can achieve a warping effect, and then the conversion roller 37 is quickly reset. At the same time, the support arm 36 can rotate and reset the film guide roller 34 so that the plastic film is re-covered on the surface of the OCA film. The film pressing roller group 35 driven by each pressurized cylinder uses the rated roller pressure to level and repair the die-cut product, thereby eliminating the air residue at the deformation part of the die-cut product and avoiding the subsequent bubble generation.

[0088] A die-cutting process for preventing the generation of bubbles, comprising the following steps:

[0089] S1. Material preparation and pretreatment: select OCA film, silicone film and plastic film of corresponding thickness specifications according to production requirements, ensure that their surfaces are clean and dust-free, and check whether there are defects, bubbles and scratches on the OCA film; then place the OCA film, silicone film and plastic film at the corresponding workstations;

[0090] S2. The bottom film is dragged and peeled off. The silicone film and the OCA film are attached to each other at the first rubber roller 14. At this time, the rewinding unit 15 peels off and collects the light film covering the surface of the OCA film to facilitate subsequent die-cutting and waste discharge;

[0091] S3. Oiling die-cutting. When the OCA film passes through the die-cutting mechanism 2, the roller cutter 22 in the die-cutting mechanism 2 can perform die-cutting processing on the OCA film by rolling. In each die-cutting operation, the oil roller 4 in the die-cutting mechanism 2 can lubricate the blade of the roller cutter during continuous axial sliding, thereby increasing the die-cutting separation effect and making the outer frame waste discharge smoother, thereby preventing the die-cut product from being deformed by the belt;

[0092] S4. Die-cutting waste discharge and surface pressing. The waste roller 17 in the waste discharge unit 16 reels the OCA film frame waste and the tape. At the same time, the visual sensor scans whether there are surface defects on the die-cut products. The convex roller 38 in the pressing detection mechanism 3 convexly carries the die-cut products with deformation defects, so that the deformed parts of the die-cut products achieve the effect of warping, and then they are covered with plastic film again, and the pressing roller squeezes and repairs them at the same time;

[0093] S5. Final lamination: the light film is bonded to the surface of the OCA film by the second rubber roller 18 through the film placing unit 19.

[0094] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A die-cutting device for preventing the generation of bubbles, characterized in that: It includes: A feeding unit (1) is provided with a feeding roller installed therein, and an OCA film is rolled up on the feeding roller; A plurality of transmission steel rollers (11) are arranged and disposed, and the transmission steel rollers (11) are distributed behind the loading unit (1) and are used for transmitting and loading the OCA film. A transmission part (12) is installed outside the transmission steel rollers (11); A bottom film conveying unit (13) is located below the loading unit, wherein a silicone film is conveyed in the bottom film conveying unit (13), and the silicone film is used to drag the OCA film to the bottom; A first rubber roller (14) is rotatably mounted above the transmission steel roller (11) located at the first position, and the first rubber roller (14) cooperates with the transmission steel roller (11) below to laminate the silicone film and the OCA film; A winding unit (15) is arranged above the feeding unit (1), and the winding unit (15) is used to wind up the light film covering the surface of the OCA film; A die-cutting mechanism (2) is arranged above the second transmission steel roller (11), and the die-cutting mechanism (2) performs die-cutting processing on the OCA film by rolling; A waste discharge unit (16) is provided with an adhesive tape rolled inside thereof for bonding with the frame waste. A waste roller (17) is arranged inside the waste discharge unit (16) and the waste roller (17) is used to roll up the OCA film frame waste and the adhesive tape; A pressing detection mechanism (3) is arranged behind the waste discharge unit (16), and the pressing detection mechanism (3) integrates and flattens the die-cut products on the surface of the OCA film after the waste is discharged. A visual sensor is provided in the pressing detection mechanism (3), and the visual sensor scans the surface defects of the die-cut products, and the pressing detection mechanism (3) appropriately repairs the defects of the die-cut products; A second rubber roller (18) is rotatably mounted above the transmission steel roller (11) located at the third position, a film placing unit (19) is arranged behind the second rubber roller (18), a light film is rolled up in the film placing unit (19), and the light film is adhered to the surface of the OCA film through the second rubber roller (18); The pressing detection mechanism (3) comprises: A frame (31) is provided with two film rolling rollers (32) which are arranged vertically and rotatably on the left side thereof, and two film collecting rollers (33) which are arranged vertically and rotatably on the right side thereof, wherein a plastic film is rolled between each of the film rolling rollers (32) and the film collecting rollers (33); Film guide roller (34); The film pressing roller group (35) is a plurality of horizontally distributed film pressing roller groups, each of which is composed of two pressing rollers distributed vertically; A support arm (36) is rotatably connected to the film guide roller (34) located on the upper left side of the frame (31), the support arm (36) is hinged to the frame (31), and an adjustable telescopic rod is hinged in the frame (31), one end of the adjustable telescopic rod is connected to the support arm (36); A conversion roller (37) is provided in the frame (31) at the front side of the film pressing roller group (35); The visual sensor is arranged between the conversion roller (37) and the film guide roller (34) and is vertically facing the plastic film above; A plurality of convex rollers (38) are distributed on the conversion roller (37); The diameters of the convex rollers (38) are different, and each convex roller (38) is rotatably connected to the conversion roller (37).

2. A die-cutting device for preventing bubble generation according to claim 1, characterized in that: The die-cutting mechanism (2) comprises: A roller frame (21) is provided with a roller cutter (22) which is horizontally rotatably connected to the roller frame (21) via a bearing, and the roller cutter (22) contacts and abuts against the surface of the OCA film; A side bracket (23) is vertically slidably mounted on one side of the roller frame (21), and an oil roller (4) is horizontally rotatably connected inside the side bracket (23). The oil roller (4) is in close contact with the roller cutter (22), and the oil roller (4) is used to lubricate the die-cutting blade on the surface of the roller cutter (22) with oil; A threaded column (24) is vertically symmetrically fixed on the side bracket (23), one end of the threaded column (24) is slidably connected to the roller frame (21), and an adjustment sleeve (25) is rotatably connected to the roller frame (21), and the adjustment sleeve (25) is threadedly connected to the threaded column (24); A support spring is sleeved on the threaded column (24), and the upper and lower ends of the support spring are respectively in contact with the roller frame (21) and the side bracket (23); The tail scraper (26) is horizontally fixed on the roller frame (21), the cross section of the tail scraper (26) is an inverted L-shaped structure, and a vertically arranged oil scraper is fixed inside the tail scraper, with a gap between the oil scraper and the roller cutter (22).

3. A die-cutting device for preventing bubble generation according to claim 2, characterized in that: The oil roller (4) comprises: A roller shaft (41) is rotatably connected to the side bracket (23), and one end of the roller shaft (41) is coaxially slidably connected to a roller body (42); An oil cavity (43) is provided in the roller body (42); a plurality of oil holes (44) are evenly distributed on the roller body (42); each of the oil holes (44) is connected to the oil cavity (43); an oil guide groove (45) is provided in the center of one side of the oil cavity (43) in the roller body (42); an oil delivery pipe (46) is connected to the outside of the oil guide groove (45); The sponge oil sleeve (47) is sleeved outside the roller body (42).

4. A die-cutting device for preventing bubble generation according to claim 3, characterized in that: The rotation direction of the roller shaft (41) is opposite to the rotation direction of the roller cutter (22); A shaft sleeve (48) is fixed on the side of the side bracket (23) away from the roller shaft (41), the center of the roller body (42) is inserted into the shaft sleeve (48), a piston (49) is slidably connected inside the shaft sleeve (48), and the roller body (42) and the piston (49) are rotationally connected; and a pulse air pipe is connected to the outside of the shaft sleeve (48), and the pulse air pipe drives the roller body (42) to move axially back and forth under the action of continuous exhaust and suction.

5. A die-cutting device for preventing bubble generation according to claim 3, characterized in that: A pressure roller (5) is also arranged on the side bracket (23) above the oil roller (4), and a plurality of mounting grooves are distributed on the circumferential side wall of the pressure roller (5), each of which is slidably connected with an oil squeezing plate (51), and an air cavity (52) is arranged in the pressure roller (5), and the air cavity (52) is connected to the mounting groove, so that air pressure pushes each of the oil squeezing plates (51) to slide radially, and an air guide channel (53) is also arranged at one end of the pressure roller (5), and the air guide channel (53) is connected to the air cavity (52).

6. A die-cutting device for preventing bubble generation according to claim 2, characterized in that: There are four film guide rollers (34) symmetrically distributed, and two film guide rollers (34) located at the same horizontal plane transmit the plastic film horizontally; The pressing rollers are respectively in contact with the upper and lower parts of the two plastic films; The pressurizing cylinder is arranged one by one corresponding to each of the pressing rollers, the pressurizing cylinder is vertically connected to the frame (31), and the telescopic end of the pressurizing cylinder is connected to the pressing roller, the plastic film and the OCA film are transmitted synchronously, and the rotation direction of the pressing roller is consistent with the transmission direction of the OCA film, and its rotation speed is higher than the transmission speed of the OCA film.

7. A die-cutting device for preventing bubble generation according to claim 6, characterized in that: The conversion roller (37) is in abutment contact with the plastic film located below.

8. A die-cutting device for preventing bubble generation according to claim 7, characterized in that: The film guide roller (34) can be rotated and adjusted along with the support arm (36) so that the upper plastic film is separated from the OCA film.

9. A die-cutting device for preventing bubble generation according to claim 8, characterized in that: The conversion roller (37) causes the corresponding convex roller (38) to abut against the surface of the plastic film below during rotation adjustment, and at this time, the convex roller (38) forms a bottom convex support for the plastic film and the OCA film.

10. A die-cutting process for preventing the generation of bubbles, which uses the die-cutting device for preventing the generation of bubbles as claimed in claim 9, characterized in that: It includes the following steps: S1. Material preparation and pretreatment: select OCA film, silicone film and plastic film of corresponding thickness specifications according to production requirements, ensure that their surfaces are clean and dust-free, and check whether there are defects, bubbles and scratches on the OCA film; then place the OCA film, silicone film and plastic film at the corresponding workstations; S2. The bottom film is dragged and peeled off. The silicone film and the OCA film are attached to each other at the first rubber roller (14). At this time, the rewinding unit (15) peels off the light film covering the surface of the OCA film and collects the film; S3. Oiling die-cutting: when the OCA film passes through the die-cutting mechanism (2), the roller cutter (22) in the die-cutting mechanism (2) can perform die-cutting processing on the OCA film by rolling. During each die-cutting operation, the oil roller (4) in the die-cutting mechanism (2) can lubricate the blade of the roller cutter with oil during continuous axial sliding, thereby increasing the die-cutting separation effect and making the outer frame waste discharge smoother, thereby preventing the die-cut product from being deformed. S4. Die-cutting waste discharge and surface pressing, the waste roller (17) in the waste discharge unit (16) reels the OCA film frame waste and the tape, and at the same time scans the die-cut product for surface defects through a visual sensor, and the convex roller (38) in the pressing detection mechanism (3) convexly carries the die-cut product with deformation defects, so that the deformed part of the die-cut product achieves a warping effect, and then it is covered with plastic film again, and at the same time, the pressing roller squeezes and repairs it; S5. Final lamination: the light film is bonded to the surface of the OCA film by the second rubber roller (18) through the film placing unit (19).

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