Die cutting device for OCA optical cement

Abstract

The invention discloses an OCA (optical clear adhesive) die cutting device which comprises a die cutting table, guide roller sets are arranged on the two sides of the top of the die cutting table, a lower die shell is fixedly connected to the middle of the top of the die cutting table, a plurality of first telescopic driving parts are mounted on the die cutting table, the output ends of the first telescopic driving parts are jointly connected with an upper die shell, and a liftable die cutting knife set is arranged in the upper die shell. The two outer sides of the upper mold shell are fixedly connected with two housings correspondingly, and moving plates are slidably connected into the housings and the upper mold shell. In the die-cutting process, cutters of the die-cutting cutter sets make contact with oiling rollers of the corresponding oiling and frictioning small sets in a relative moving mode, oil on the oiling rollers is evenly smeared on the surfaces of the cutters, the adhesive pulling phenomenon generated after the cutters punch optical adhesive tape is effectively reduced, and meanwhile after punching is completed, the cutting efficiency is improved. The cutters are in relative movable contact with the glue wiping rollers of the corresponding oiling and glue wiping groups, and the glue wiping rollers wipe and clean glue on the surfaces of the cutters, so that the cleanliness of the cutters is ensured, and good conditions are provided for subsequent punching operation.

Description

Technical Field

[0001] The present invention relates to the technical field of die-cutting machines, and particularly to a die-cutting device for OCA optical adhesive. Background Art

[0002] OCA optical adhesive is one of the important touch screen raw materials. Making the optical acrylic adhesive into a substrate-free tape is a better adhesive for touch screens. It has high clarity, high light transmittance, and the total light transmittance is greater than 90%. At the same time, it also has high adhesion, high temperature resistance, ultraviolet resistance and other advantages.

[0003] In the production and processing of OCA optical adhesive, the die-cutting process is an indispensable part. When the die-cutting tool of the existing die-cutting device punches the optical adhesive strip, due to the certain viscosity of the optical adhesive, the surface of the tool is easily adhered with glue residues, resulting in the phenomenon of pulling glue. This not only affects the punching quality, reduces the yield rate of the optical adhesive products, but also increases the workload of cleaning the tool subsequently, reduces the production efficiency. Moreover, with the increase of the punching times, the adhesive on the surface of the tool will accumulate continuously, making the pulling glue phenomenon more serious, further affecting the product quality.

[0004] The existing die-cutting device depends on manual regular disassembly and cleaning for the cleaning and maintenance of the tool, which is time-consuming and laborious in operation, and cannot guarantee the single die-cutting quality of the optical adhesive. Summary of the Invention

[0005] In order to overcome the above-mentioned disadvantages of the prior art, the present invention provides a die-cutting device for OCA optical adhesive.

[0006] Technical solution: A die-cutting device for OCA optical glue, including a die-cutting table. Guide roller groups are arranged on both sides of the top of the die-cutting table. A lower die shell is fixedly connected to the middle of the top of the die-cutting table. A plurality of first telescopic driving members are installed on the die-cutting table. The output ends of the plurality of first telescopic driving members are commonly connected to an upper die shell. A vertically movable die-cutting tool group is arranged in the upper die shell. The die-cutting tool group includes a pair of horizontal knives and a pair of vertical knives. Two cover shells are respectively fixedly connected to the outer sides of the upper die shell. A moving plate is slidably connected between the cover shell and the upper die shell. The moving plate includes two mounting components. Each mounting component includes an upper mounting plate and a lower mounting plate which are arranged up and down and detachably connected. Through openings for the die-cutting tool group to pass through are formed in the upper mounting plate, the lower mounting plate and the bottom of the upper die shell. Four groups of upper oil and glue wiping components are arranged in each lower mounting plate. Each group of upper oil and glue wiping components corresponds to a horizontal knife or a vertical knife. And each group of upper oil and glue wiping components includes two upper oil and glue wiping sub-groups. The two upper oil and glue wiping sub-groups of each upper oil and glue wiping component are symmetrically arranged on both sides of the axis of the corresponding horizontal knife or vertical knife. Each upper oil and glue wiping sub-group includes an upper oil roller and a glue wiping roller. And the axes of the upper oil roller and the glue wiping roller are both parallel to the axis of the corresponding horizontal knife or vertical knife. Each upper oil and glue wiping sub-group can swing around a rotation axis located in the middle of the axes of the upper oil roller and the glue wiping roller. A first driving mechanism is arranged in each lower mounting plate. The first driving mechanism is used to synchronously drive the two upper oil and glue wiping sub-groups of each upper oil and glue wiping component to swing downward through the through opening corresponding to the horizontal knife or vertical knife in the lower mounting plate.

[0007] Further, the first driving mechanism includes a first motor, a first transmission rod and an orthogonal bevel gear set. The first motor is installed in the lower mounting plate. There are two first transmission rods which are vertically distributed. The output shaft of the first motor is in transmission connection with the two first transmission rods through the orthogonal bevel gear set. Two first worms and two second worms are arranged at intervals along the axial direction on each first transmission rod. The first worms and the second worms have opposite helix directions. A first worm gear is arranged at one end of each upper oil and glue wiping sub-group. The first worm gears of the two upper oil and glue wiping sub-groups of each upper oil and glue wiping component are respectively meshed with a first worm and a second worm.

[0008] Further, a scraping ring is sleeved on each glue wiping roller. The scraping ring can reciprocate along the axis of the glue wiping roller. A slag pushing strip is slidably connected to the lower mounting plate. The moving direction of the slag pushing strip is parallel to the axis of the glue wiping roller. A card slot perpendicular to the axis of the glue wiping roller is formed on the slag pushing strip. A convex ring matching the card slot is arranged on the outer side of the scraping ring. A plurality of slag discharging holes for cooperating with the slag pushing strip are formed on the lower mounting plate.

[0009] Further, each upper oil and glue wiping sub-group further includes two connecting rods. The two ends of the upper oil roller and the glue wiping roller are respectively rotatably connected to the two connecting rods. A ball screw is rotatably connected to the middle of the two connecting rods. A screw nut is threadedly connected to the ball screw. The scraping ring is rotatably connected to the screw nut. The two ends of the ball screw respectively rotatably penetrate through the two connecting rods and are rotatably connected to the lower mounting plate. A sleeve is fixedly connected to the outside of one connecting rod. The sleeve is rotatably connected to one end of the ball screw. The first worm gear of each upper oil and glue wiping sub-group is coaxially fixedly connected to the sleeve.

[0010] Furthermore, two sets of driving mechanisms 2 are arranged in each lower mounting plate, and the two sets of driving mechanisms 2 are respectively used to drive the ball screws of the oiling and gluing groups corresponding to the horizontal knife and the vertical knife. The driving mechanism 2 includes a motor 2, a transmission rod 2, a worm 3 and a worm wheel 2. The motor 2 is installed in the lower mounting plate, and four worm gears 3 are axially arranged on the transmission rod 2. The worm wheel 2 is fixedly connected to one end of the ball screw away from the sleeve, and the worm wheel 2 is meshed with its adjacent worm gear 3.

[0011] Furthermore, an oil receiving pipe is provided at one end of each oiling roller, and a plurality of liftable plugs corresponding to the positions of the oil receiving pipes are provided on the top of the cover shell. Both the top of the cover shell and the upper mounting plate are provided with through holes for the plugs to pass through. When the plugs rise or fall, they can form or release a sealed connection with the corresponding oil receiving pipe. An oil storage tank is fixedly connected to the top of the cover shell, and an oil pump is installed on the top of the cover shell. The output end and the input end of the oil pump are respectively connected to the plugs and the oil storage tank through oil pipes.

[0012] Furthermore, the oiling roller comprises a sponge sleeve and a diverter pipe, the diverter pipe is fixed in the sponge sleeve, a plurality of diverter grooves are provided on the diverter pipe along its axis, and one end of the diverter pipe is connected to the oil receiving pipe.

[0013] Furthermore, a collecting box is slidably connected to the bottom of each cover shell, and a through hole corresponding to the position of the slag discharge hole on the lower mounting plate is opened at the bottom of each cover shell, and the collecting box is used to receive the glue residue falling from the through hole.

[0014] Furthermore, a telescopic driving component 2 is installed on the top of the upper mold shell, and the output end of the telescopic driving component 2 is transmission connected to the die-cutting knife group. A telescopic driving component 3 is installed outside the cover shell on one side of the upper mold shell, and the output end of the telescopic driving component 3 is fixedly connected to the movable plate. Multiple inserts on each cover shell are fixedly connected to a lifting plate, and at least one telescopic driving component 4 is installed on the top of each cover shell, and the output end of the telescopic driving component 4 is fixedly connected to the lifting plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In the die-cutting process of the present invention, the cutter of the die-cutting knife group is in relative movable contact with the oiling roller of the corresponding oiling and wiping group, and the oil on the oiling roller is evenly applied to the surface of the cutter, which effectively reduces the phenomenon of glue pulling after the cutter punches and cuts the optical adhesive strip. At the same time, after the punching and cutting is completed, the cutter is in relative movable contact with the glue wiping roller of the corresponding oiling and wiping group, and the glue wiping roller wipes and cleans the adhesive on the surface of the cutter to ensure the cleanliness of the cutter, providing good conditions for the subsequent punching and cutting operations, thereby improving the punching and cutting quality of the optical adhesive.

[0016] 2. The present invention drives the ball screw to rotate through the second driving mechanism. The screw nut drives the scraping ring to move along the rubber wiping roller, and the scraping ring scrapes off the rubber residues on the surface of the rubber wiping roller. At the same time, under the cooperation of the convex ring and the card slot, the movement of the scraping ring can drive the slag pushing bar to move, and the slag pushing bar pushes the rubber residues scraped off by the scraping ring towards the slag discharging hole to discharge from the lower mounting plate. The rubber residues continue to fall through the through hole at the bottom of the cover shell into the collection box for collection. This automated rubber residue cleaning method avoids the cumbersome manual cleaning and improves the production efficiency.

[0017] 3. The present invention drives the lifting plate to descend through the fourth telescopic driving member, so that the insertion pipe is hermetically inserted into the oil receiving pipe. Subsequently, the oil pump pumps the oil liquid in the oil storage tank into the oil receiving pipe, and the oil liquid is evenly dispersed onto the sponge sleeve through the diversion groove of the diversion pipe, realizing the uniform replenishment of oil liquid for the oiling roller and ensuring the normal progress of the subsequent oiling operation of the oiling roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 is a sectional view of the internal structure of the upper die shell and the cover shell of the present invention.

[0020] Figure 3 is an exploded three-dimensional structural view of the mounting assembly of the present invention.

[0021] Figure 4 is a schematic diagram of the mounting structure of the oiling and rubber wiping sub-group of the present invention.

[0022] Figure 5 is a three-dimensional structural schematic diagram of the oiling and rubber wiping sub-group and the first driving mechanism of the present invention.

[0023] Figure 6 is a partial structural schematic diagram of the first driving mechanism of the present invention.

[0024] Figure 7 is a three-dimensional structural schematic diagram of the oiling and rubber wiping sub-group and the second driving mechanism of the present invention.

[0025] Figure 8 is a partial structural schematic diagram of the oiling and rubber wiping sub-group of the present invention.

[0026] Figure 9 is an exploded three-dimensional structural view of the ball screw, the sleeve and the first worm of the present invention.

[0027] Figure 10 is a three-dimensional structural schematic diagram of the scraping ring and the rubber pushing bar of the present invention.

[0028] Figure 11 is a partial sectional view of the lower mounting plate of the present invention.

[0029] Figure 12This is a three-dimensional structural sectional view of the housing of the present invention.

[0030] Figure 13 This is an internal structural sectional view of the oiling roller of the present invention.

[0031] In the above drawings, 101 - die-cutting table, 102 - material guiding roller group, 103 - lower die housing, 104 - first telescopic driving member, 105 - upper die housing, 106 - housing, 2 - die-cutting tool group, 3 - mounting assembly, 301 - upper mounting plate, 302 - lower mounting plate, 4 - upper oiling and rubber wiping sub-group, 401 - oiling roller, 402 - sponge sleeve, 403 - shunt pipe, 404 - shunt groove, 405 - rubber wiping roller, 406 - connecting rod, 5 - first driving mechanism, 501 - first motor, 502 - first transmission rod, 503 - orthogonal bevel gear set, 504 - first worm, 505 - second worm, 506 - first worm gear, 601 - scraping ring, 602 - convex ring, 603 - slag pushing bar, 604 - clamping groove, 605 - slag discharging hole, 701 - ball screw, 702 - screw nut, 703 - sleeve, 8 - second driving mechanism, 801 - second motor, 802 - second transmission rod, 803 - third worm, 804 - second worm gear, 901 - oil connecting pipe, 902 - inserting pipe, 903 - lifting plate, 904 - oil pumping unit, 905 - oil storage tank, 10 - second telescopic driving member, 11 - third telescopic driving member, 12 - fourth telescopic driving member, 13 - collection box. Detailed implementation manners

[0032] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and fully convey the scope of the present invention to those skilled in the art.

[0033] A die-cutting device for OCA optical adhesive provided by the embodiment is as Figures 1 - 13As shown in the figure, it includes a die-cutting table 101, a material guiding roller group 102 and a lower die shell 103. The material guiding roller groups 102 are arranged on both sides of the top of the die-cutting table 101, and the lower die shell 103 is fixedly connected to the middle of the top of the die-cutting table 101. A plurality of first telescopic driving members 104 are installed on the die-cutting table 101, and the output ends of the plurality of first telescopic driving members 104 are commonly connected to an upper die shell 105. A liftable die-cutting tool group 2 is arranged in the upper die shell 105. The die-cutting tool group 2 includes a pair of horizontal knives and a pair of vertical knives. Two cover shells 106 are respectively fixedly connected to the outer sides of the upper die shell 105. A moving plate is slidably connected between the cover shell 106 and the upper die shell 105. The moving plate includes two mounting components 3. Each mounting component 3 includes an upper mounting plate 301 and a lower mounting plate 302 which are arranged up and down and detachably connected. Through holes for the die-cutting tool group 2 to pass through are formed in the upper mounting plate 301, the lower mounting plate 302 and the bottom of the upper die shell 105. Four groups of upper oiling and rubber wiping components are arranged in each lower mounting plate 302. Each group of upper oiling and rubber wiping components corresponds to a horizontal knife or a vertical knife, and each group of upper oiling and rubber wiping components includes two upper oiling and rubber wiping sub-groups 4. The two upper oiling and rubber wiping sub-groups 4 of each upper oiling and rubber wiping component are symmetrically arranged on both sides of the axis of the corresponding horizontal knife or vertical knife. Each upper oiling and rubber wiping sub-group 4 includes an upper oiling roller 401 and a rubber wiping roller 405, and the axes of the upper oiling roller 401 and the rubber wiping roller 405 are both parallel to the axis of the corresponding horizontal knife or vertical knife. Each upper oiling and rubber wiping sub-group 4 can swing around a rotation axis located in the middle of the axes of the upper oiling roller 401 and the rubber wiping roller 405. A first driving mechanism 5 is arranged in each lower mounting plate 302. The first driving mechanism 5 is used to synchronously drive the two upper oiling and rubber wiping sub-groups 4 of each upper oiling and rubber wiping component to swing towards the through hole for the corresponding horizontal knife or vertical knife to pass through in the lower mounting plate 302.

[0034] In the embodiment, the first driving mechanism 5 includes a first motor 501, a first transmission rod 502, and an orthogonal bevel gear set 503. The first motor 501 is installed in the lower mounting plate 302. There are two first transmission rods 502 which are vertically distributed. The two first transmission rods 502 respectively correspond to the four upper oiling and rubber wiping groups 4 corresponding to two transverse knives or two longitudinal knives. The output shaft of the first motor 501 is drivingly connected to the two first transmission rods 502 through the orthogonal bevel gear set 503. Two first worms 504 and two second worms 505 are arranged at intervals along the axial direction on each first transmission rod 502. The first worms 504 and the second worms 505 have opposite helix directions. A first worm gear 506 is arranged at one end of each upper oiling and rubber wiping group 4. The first worm gears 506 of the two upper oiling and rubber wiping groups 4 of each upper oiling and rubber wiping assembly are respectively engaged with a first worm 504 and a second worm 505. Specifically, the first motor 501 transmits power to the two first transmission rods 502 through the orthogonal bevel gear set 503, so that the first worms 504 and the second worms 505 on the first transmission rods 502 respectively drive the first worm gears 506 of each upper oiling and rubber wiping group 4. Since the first worms 504 and the second worms 505 have opposite helix directions, the rotation directions of the two first worm gears 506 of each upper oiling and rubber wiping assembly are opposite, so that the two upper oiling and rubber wiping groups 4 of each upper oiling and rubber wiping assembly can swing downward to the through holes corresponding to the transverse knives or longitudinal knives on the lower mounting plate 302.

[0035] In the embodiment, a scraping ring 601 is sleeved on each rubber wiping roller 405. The scraping ring 601 can reciprocate along the axis of the rubber wiping roller 405. A slag pushing bar 603 is slidably connected to the lower mounting plate 302. The moving direction of the slag pushing bar 603 is parallel to the axis of the rubber wiping roller 405. A card slot 604 perpendicular to the axis of the rubber wiping roller 405 is formed in the slag pushing bar 603. The outer side of the scraping ring 601 has a convex ring 602 matching the card slot 604. A plurality of slag discharging holes 605 for cooperating with the slag pushing bar 603 are formed in the lower mounting plate 302. Specifically, slag discharging holes 605 are arranged at both ends of the moving direction of the slag pushing bar 603 to discharge the rubber slag when the scraping ring 601 reciprocates along the axis of the rubber wiping roller 405.

[0036] In the embodiment, each oiling and rubber rubbing group 4 further includes two connecting rods 406. The two ends of the oiling roller 401 and the rubber rubbing roller 405 are respectively rotatably connected to the two connecting rods 406. A ball screw 701 is rotatably connected to the middle parts of the two connecting rods 406. A screw nut 702 is threadedly connected to the ball screw 701. The scraping ring 601 is rotatably connected to the screw nut 702. The two ends of the ball screw 701 respectively rotatably penetrate through the two connecting rods 406 and are rotatably connected to the lower mounting plate 302. A sleeve 703 is fixedly connected to the outside of one connecting rod 406. The sleeve 703 is rotatably connected to one end of the ball screw 701. The first worm wheel 506 of each oiling and rubber rubbing group 4 is coaxially fixedly connected to the sleeve 703. When the first worm wheel 506 is driven to rotate, the entire oiling and rubber rubbing group 4 can be driven to rotate around the axis of the ball screw 701 through the sleeve 703. When the ball screw 701 is driven to rotate, the first worm wheel 506 and the sleeve 703 of each oiling and rubber rubbing group 4 are not affected.

[0037] In the embodiment, two sets of second driving mechanisms 8 are arranged in each lower mounting plate 302. The two sets of second driving mechanisms 8 are respectively used to drive the ball screws 701 of the horizontal knife and the vertical knife corresponding to the oiling and rubber rubbing group 4. The second driving mechanism 8 includes a second motor 801, a second transmission rod 802, a third worm 803 and a second worm wheel 804. The second motor 801 is installed in the lower mounting plate 302. Four third worms 803 are arranged along the axial direction on the second transmission rod 802. The four third worms 803 respectively correspond to the positions of the ball screws 701 of the four oiling and rubber rubbing groups 4 corresponding to the two horizontal knives or the two vertical knives. The second worm wheel 804 is fixedly connected to the end of the ball screw 701 far from the sleeve 703, and the second worm wheel 804 meshes with the third worm 803 corresponding to its position on the ball screw 701.

[0038] In the embodiment, an oil receiving pipe 901 is arranged at one end of each oiling roller 401. A plurality of liftable insertion pipes 902 corresponding to the oil receiving pipes 901 one by one are arranged at the top of the housing 106. Through holes for the insertion pipes 902 to pass through are opened at the top of the housing 106 and the upper mounting plate 301. When the insertion pipes 902 rise or fall, a sealed insertion connection can be formed with or released from the corresponding oil receiving pipes 901. A fuel tank 905 is fixedly connected to the top of the housing 106. A fuel pump 904 is installed at the top of the housing 106. The output end and the input end of the fuel pump 904 are respectively connected to each insertion pipe 902 and the fuel tank 905 through oil pipes.

[0039] In the embodiment, the oiling roller 401 includes a sponge sleeve 402 and a flow dividing pipe 403. The flow dividing pipe 403 is fixedly connected inside the sponge sleeve 402. A plurality of flow dividing grooves 404 are opened along the axis of the flow dividing pipe 403. One end of the flow dividing pipe 403 is communicated with the oil receiving pipe 901.

[0040] In the embodiment, the bottom of each cover shell 106 is slidably connected to a collecting box 13, and the bottom of each cover shell 106 is provided with a through hole corresponding to the position of the slag discharge hole 605 on the lower mounting plate 302, and the collecting box 13 is used to receive the glue residue falling from the through hole.

[0041] In the embodiment, a telescopic driving member 2 10 is installed on the top of the upper mold shell 105, and the output end of the telescopic driving member 2 10 is transmission connected to the die-cutting knife group 2, and a telescopic driving member 3 11 is installed on the outside of the cover shell 106 on one side of the upper mold shell 105, and the output end of the telescopic driving member 3 11 is fixedly connected to the movable plate, and multiple inserts 902 on each cover shell 106 are fixedly connected to a lifting plate 903, and two telescopic driving members 4 12 are installed on the top of each cover shell 106, and the output end of the telescopic driving member 4 12 is fixedly connected to the lifting plate 903.

[0042] The working process of the present invention is as follows: initially, the oiling rollers 401 and the rubber-wiping rollers 405 of all the oiling and rubber-wiping groups 4 are in the same vertical plane, and the oiling rollers 401 are located above the rubber-wiping rollers 405. The two groups of mounting components 3 on the movable plate are located in the upper mold shell 105 and the other cover shell 106, respectively. The interior of the other cover shell 106 is in an empty state. The insertion tube 902 is initially in a high position to prepare for descending and plugging with the oil receiving tube 901. When in use, the optical rubber strip is passed through the two guide roller groups 102, and the lower surface of the optical rubber strip is in contact with the upper surface of the lower mold shell 103. The upper mold shell 105 is driven down to contact with the optical rubber strip by the telescopic driving member 104, and then the driving mechanism is driven to drive the upper mold shell 105 to move downward. The structure 15 drives all the oiling and gluing groups 4 to swing 90 degrees synchronously toward the through-hole of the lower mounting plate 302, so that the two oiling rollers 401 of each group of oiling and gluing components are close to each other and the two gluing rollers 405 are far away from each other. Then the die-cutting knife group 2 is driven to descend through the telescopic driving member 2 10, so that the knives of the die-cutting knife group 2 pass through the through-holes of the upper mounting plate 301, the lower mounting plate 302 and the upper mold shell 105 in turn to punch and cut the optical adhesive strip. In this process, the horizontal knife and the vertical knife of the die-cutting knife group 2 are in relative movable contact with the oiling roller 401 of the corresponding oiling and gluing group 4, and the oil on the oiling roller 401 is evenly smeared on the surface of the knife, which effectively reduces the glue pulling phenomenon caused by the knife punching and cutting the optical adhesive strip, thereby improving the optical adhesive strip. High punching quality. After the optical adhesive strip is punched once, the driving mechanism 15 drives all the oiling and wiping groups 4 to swing 180 degrees in the opposite direction to the hole of the lower mounting plate 302, so that the two oiling rollers 401 of each group of oiling and wiping components are separated from each other, and the two wiping rollers 405 are close to each other until they are in contact with the corresponding horizontal knife or vertical knife. Then, the upper mold shell 105 is driven to rise and reset through the telescopic driving member 104, and the die-cutting knife group 2 is driven to rise and reset through the telescopic driving member 2 10. In this process, the knife of the die-cutting knife group 2 is in relative mobile contact with the wiping roller 405 of the corresponding oiling and wiping group 4, and the wiping roller 405 wipes and cleans the glue on the surface of the knife to ensure that the knife The cleanliness of the tool is ensured, providing good conditions for the subsequent punching and cutting operations. Subsequently, all the oiling and gluing groups 4 are driven by the driving mechanism 15 to synchronously swing 180 degrees in the opposite direction toward the through-hole of the lower mounting plate 302, so that the two gluing rollers 405 of each group of oiling and gluing components move away from each other and the two oiling rollers 401 approach each other, preparing for the next oiling operation. Then, the optical rubber strip is pulled by the external traction mechanism to move the optical rubber strip to the discharge side. Then, the punching and cutting operation of the optical rubber strip and the oiling and gluing operation of the oiling and gluing components are repeated. In this way, the knives of the die-cutting knife group 2 can be continuously and effectively oiled and glued, ensuring the stable punching quality of the optical rubber strip.

[0043] After the calendering roller 405 works for a long time, a large amount of rubber residue will adhere to its surface, affecting the calendering effect. At this time, the moving plate is driven to move by the telescopic driving member three 11, so that the installation component 3 initially in the upper die shell 105 moves to the cover 106 initially in the vacant state, and the installation component 3 initially in the cover 106 moves into the upper die shell 105. Subsequently, the ball screw 701 is driven to rotate by the driving mechanism two 8. The rotation of the ball screw 701 can drive the screw nut 702 to move along the axial direction of the screw. The screw nut 702 drives the scraping ring 601 to move along the calendering roller 405. The scraping ring 601 scrapes off the rubber residue on the surface of the calendering roller 405. At the same time, under the cooperation of the convex ring 602 and the card slot 604, the movement of the scraping ring 601 can drive the slag pushing strip 603 to move. The slag pushing strip 603 pushes the rubber residue scraped off by the scraping ring 601 towards the slag discharging hole 605 to discharge the lower mounting plate 302. The rubber residue continues to fall through the through hole at the bottom of the cover 106 into the collection box 13 for collection. The cooperation of the convex ring 602 and the card slot 604, and the rotational connection between the scraping ring 601 and the screw nut 702 ensure that the scraping ring 601 does not lose the linkage with the screw nut 702 and the rubber pushing strip as the calendering roller 405 swings.

[0044] After the oil on the oiling roller 401 gradually runs out after working for a long time, in order to replenish the oil on the oiling roller 401, the lifting plate 903 is driven to descend by the telescopic driving member four 12, so that the lifting plate 903 drives the inserted tube 902 connected to it to move downward, successively passing through the through holes in the top of the cover 106 and the upper mounting plate 301 until it forms a sealed insertion with the corresponding oil receiving pipe 901. Subsequently, the oil in the oil storage tank 905 is pumped through the oil pipe to the oil receiving pipe 901 by the oil pump 904. The oil is evenly dispersed onto the sponge sleeve 402 through the diversion groove 404 of the diversion pipe 403, realizing the uniform replenishment of oil for the oiling roller 401 and ensuring the normal progress of the subsequent oiling operation of the oiling roller 401. After the oil is replenished, the lifting plate 903 is driven to move upward and reset by the telescopic driving member four 12, so that the lifting plate 903 drives the inserted tube 902 connected to it to move upward and reset, releasing the sealed insertion with the corresponding oil receiving pipe 901.

[0045] The above are only the embodiments of the present invention and are not used to limit the present invention. All equivalent replacements made within the principle of the present invention shall be included within the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the known prior art of those skilled in the professional field.

Claims

1. A die-cutting device for OCA optical adhesive, comprising a die-cutting table (101), guide roller groups (102) are arranged on both sides of the top of the die-cutting table (101), a lower mold shell (103) is fixedly connected to the middle of the top of the die-cutting table (101), a plurality of telescopic driving members (104) are installed on the die-cutting table (101), and the output ends of the plurality of telescopic driving members (104) are commonly connected to an upper mold shell (105), characterized in that: A liftable die-cutting knife group (2) is arranged in the upper mold shell (105), and the die-cutting knife group (2) includes a pair of horizontal knives and a pair of vertical knives. Two cover shells (106) are fixedly connected to the outer sides of the upper mold shell (105), and a movable plate is slidably connected to the cover shell (106) and the upper mold shell (105). The movable plate includes two mounting components (3), and each mounting component (3) includes an upper mounting plate (301) and a lower mounting plate (302) arranged up and down and detachably connected. The upper mounting plate (301), the lower mounting plate (302) and the bottom of the upper mold shell (105) are all provided with a through hole for the die-cutting knife group (2) to pass through. Four groups of oiling and wiping components are arranged in each lower mounting plate (302), and each group of oiling and wiping components corresponds to a horizontal knife or a vertical knife, and each group of oiling and wiping components corresponds to a horizontal knife or a vertical knife. Each glue assembly comprises two oiling and rubbing glue groups (4), the two oiling and rubbing glue groups (4) of each oiling and rubbing glue assembly are symmetrically arranged on both sides of the axis of the corresponding horizontal knife or vertical knife, each oiling and rubbing glue group (4) comprises an oiling roller (401) and a rubbing glue roller (405), and the axes of the oiling roller (401) and the rubbing glue roller (405) are parallel to the axis of the corresponding horizontal knife or vertical knife, each oiling and rubbing glue group (4) can swing around a rotation axis located between the axes of the oiling roller (401) and the rubbing glue roller (405), and each lower mounting plate (302) is provided with a driving mechanism one (5), and the driving mechanism one (5) is used for synchronously driving the two oiling and rubbing glue groups (4) of each oiling and rubbing glue assembly to swing toward the through-hole on the lower mounting plate (302) through which the corresponding horizontal knife or vertical knife passes.

2. A die-cutting device for OCA optical adhesive according to claim 1, characterized in that: The driving mechanism 1 (5) comprises a motor 1 (501), a transmission rod 1 (502) and an orthogonal bevel gear set (503). The motor 1 (501) is mounted in the lower mounting plate (302). There are two transmission rods 1 (502) and they are vertically distributed. The output shaft of the motor 1 (501) is connected to the two transmission rods 1 (502) through the orthogonal bevel gear set (503). Two worm gears 1 (504) and two worm gears 2 (505) are arranged on each transmission rod 1 (502) at intervals along the axial direction. The rotation directions of the worm gears 1 (504) and worm gears 2 (505) are opposite. A worm gear 1 (506) is arranged at one end of each oiling and wiping group (4). The worm gears 1 (506) of the two oiling and wiping groups (4) of each oiling and wiping assembly are respectively meshed with one worm gear 1 (504) and one worm gear 2 (505).

3. A die-cutting device for OCA optical adhesive according to claim 2, characterized in that: Each rubber-wiping roller (405) is sleeved with a scraper ring (601), which can reciprocate along the axis of the rubber-wiping roller (405). A slag pushing bar (603) is slidably connected to the lower mounting plate (302), and the moving direction of the slag pushing bar (603) is parallel to the axis of the rubber-wiping roller (405). The slag pushing bar (603) is provided with a groove (604) perpendicular to the axis of the rubber-wiping roller (405). The outer side of the scraper ring (601) is provided with a convex ring (602) matching the groove (604), and the lower mounting plate (302) is provided with a plurality of slag discharge holes (605) for cooperating with the slag pushing bar (603).

4. A die-cutting device for OCA optical adhesive according to claim 3, characterized in that: Each oiling and wiping group (4) further comprises two connecting rods (406), the two ends of the oiling roller (401) and the wiping roller (405) are respectively rotatably connected to the two connecting rods (406), the middle parts of the two connecting rods (406) are rotatably connected to a ball screw (701), a screw nut (702) is threadedly connected to the ball screw (701), the scraper ring (601) is rotatably connected to the screw nut (702), the two ends of the ball screw (701) are respectively rotatably passed through the two connecting rods (406) and are rotatably connected to the lower mounting plate (302), a sleeve (703) is fixedly connected to the outer side of one connecting rod (406), the sleeve (703) is rotatably connected to one end of the ball screw (701), and the worm gear 1 (506) of each oiling and wiping group (4) is coaxially fixedly connected to the sleeve (703).

5. The die-cutting device for OCA optical adhesive according to claim 4, characterized in that: Two sets of driving mechanisms (8) are arranged in each lower mounting plate (302). The two sets of driving mechanisms (8) are used to drive the ball screws (701) of the oiling and gluing groups (4) corresponding to the horizontal knife and the vertical knife respectively. The driving mechanism (8) comprises a motor (801), a transmission rod (802), a worm (803) and a worm wheel (804). The motor (801) is installed in the lower mounting plate (302). Four worm wheels (803) are arranged on the transmission rod (802) along the axial direction. The worm wheel (804) is fixed to one end of the ball screw (701) away from the sleeve (703), and the worm wheel (804) is meshed with the adjacent worm wheel (803).

6. A die-cutting device for OCA optical adhesive according to claim 5, characterized in that: An oil receiving pipe (901) is provided at one end of each oiling roller (401), a plurality of liftable inserts (902) corresponding to the positions of the oil receiving pipes (901) are provided at the top of the housing (106), holes for the inserts (902) to pass through are provided at the top of the housing (106) and the upper mounting plate (301), and when the inserts (902) are raised or lowered, they can form or release a sealed connection with the corresponding oil receiving pipe (901), an oil storage tank (905) is fixedly connected to the top of the housing (106), and an oil pump (904) is installed at the top of the housing (106), and an output end and an input end of the oil pump (904) are respectively connected to the inserts (902) and the oil storage tank (905) through oil pipes.

7. A die-cutting device for OCA optical adhesive according to claim 6, characterized in that: The oiling roller (401) comprises a sponge sleeve (402) and a diverter pipe (403). The diverter pipe (403) is fixedly connected to the sponge sleeve (402). A plurality of diverter grooves (404) are provided on the diverter pipe (403) along its axis. One end of the diverter pipe (403) is connected to the oil receiving pipe (901).

8. The die-cutting device for OCA optical adhesive according to claim 7, characterized in that: The bottom of each cover shell (106) is slidably connected to a collecting box (13), and the bottom of each cover shell (106) is provided with a through hole corresponding to the position of the slag discharge hole (605) on the lower mounting plate (302). The collecting box (13) is used to receive the glue residue falling from the through hole.

9. A die-cutting device for OCA optical adhesive according to claim 8, characterized in that: A telescopic drive component 2 (10) is installed on the top of the upper mold shell (105), and the output end of the telescopic drive component 2 (10) is connected to the die-cutting knife group (2) in a transmission manner. A telescopic drive component 3 (11) is installed on the outside of a cover shell (106) on one side of the upper mold shell (105), and the output end of the telescopic drive component 3 (11) is fixedly connected to the movable plate. A plurality of insert tubes (902) on each cover shell (106) are fixedly connected to a lifting plate (903). At least one telescopic drive component 4 (12) is installed on the top of each cover shell (106), and the output end of the telescopic drive component 4 (12) is fixedly connected to the lifting plate (903).

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