Forward coating and reverse coating process method for producing high-precision adhesive film

Abstract

The invention relates to the technical field of composite material glue film production, in particular to a forward coating and reverse coating process method for producing a high-precision glue film, and the structure of the high-precision glue film comprises a glue blocking assembly, a glue coating assembly, a forward coating metering assembly, a rubber assembly, a reverse coating metering assembly, a glue scraping assembly and a supporting main frame, the glue coating assembly is arranged in the top end of the supporting main frame, and the glue scraping assembly is arranged in the top end of the supporting main frame; the rubber assembly is arranged at the lower end of the gluing assembly, the front side of the gluing assembly is provided with a forward-coating metering assembly, the rear side of the gluing mechanism is provided with a reverse-coating metering assembly, and glue blocking assemblies are arranged between the gluing assembly and the forward-coating metering assembly and between the gluing assembly and the reverse-coating metering assembly; and glue scraping assemblies are arranged at the bottom end of the clockwise coating metering assembly and the top end of the counterclockwise coating metering assembly. According to the invention, through the resin tank formed by the forward coating metering roller, the reverse coating metering roller and the glue spreader, an isolation plane is formed above the resin, and the surface layer of the cooled resin in contact with air cannot directly contact with the glue spreader, so that the stable temperature and the stable production quality in the process of contacting the glue spreader with the resin are ensured.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of composite film production, in particular to a forward coating and reverse coating process for producing high-precision adhesive film. BACKGROUND

[0002] The adhesive film for composite production is suitable for different coating methods according to the different surface densities of the adhesive film in the production process. The mainstream coating methods on the market are forward coating and reverse coating.

[0003] The forward coating method is that the contact surface of the rubber roller and the coating roller rotates in the same direction.

[0004] The reverse coating method is that the contact surface of the rubber roller and the coating roller rotates in the opposite direction.

[0005] Currently, the coating equipment with both coating methods mainly adopts three methods: The first method is to adopt a middle coating roller, a lower rubber roller, and a metering roller (forward coating metering roller and reverse coating metering roller) arranged on both sides of the coating roller. The coating roller and the metering roller are horizontally arranged (for example, the invention disclosed in the publication No. CN113941472A discloses a roller coating device with forward coating and reverse coating functions, which comprises: the forward and reverse switching of the coating roller forms the forward coating and reverse coating functions, the forward glue groove is arranged between the first roller and the coating roller, and the reverse glue groove is arranged between the second roller and the coating roller. The first roller is controlled to form forward and reverse rotation, that is, the forward high-gram weight coating and the forward low-gram weight coating effect can be provided. The second roller is controlled to form forward and reverse rotation, that is, the reverse high-gram weight coating and the reverse low-gram weight coating effect can be provided. The glue amount is sequentially provided from the reverse high-gram weight coating, the forward high-gram weight coating, the reverse low-gram weight coating, and the forward low-gram weight coating. In this way, the roller coating device has the functions of forward coating and reverse coating, and can provide four different gram weight coating effects under the conditions of constant speed and gap size.

[0006] The second kind: two rubber rollers (forward coating rubber roller, reverse coating rubber roller) are adopted; when forward coating, the rubber roller contacts with the forward coating rubber roller, and the reverse coating rubber roller is the metering roller; when reverse coating, the rubber roller contacts with the reverse coating rubber roller, and the forward coating rubber roller is the metering roller. This kind of mode can adopt two rubber rollers (for example, the invention disclosed in the publication No. CN118321089A discloses a five-roller film coating device for forward coating and reverse coating processes, which comprises forward coating steel rollers and reverse coating steel rollers, forward transfer rubber rollers and reverse transfer rubber rollers, and a glue tank shared by the two processes; the diameter of the reverse transfer rubber roller is smaller than that of the forward transfer rubber roller, the forward transfer rubber roller and the reverse transfer rubber roller are arranged below the forward coating steel rollers and the reverse coating steel rollers, and are arranged relative to the forward coating steel rollers and the reverse coating steel rollers; the forward coating steel rollers, the reverse coating steel rollers, the forward transfer rubber roller and the reverse transfer rubber roller are driven to rotate by motors respectively, a transverse transmission mechanism is arranged to adjust the relative distance between the forward coating steel rollers and the reverse coating steel rollers, the forward transfer rubber roller and the reverse transfer rubber roller are respectively provided with lifting mechanisms, the forward coating steel rollers and the reverse coating steel rollers are interchanged in working state, and the forward transfer rubber roller and the reverse transfer rubber roller are interchanged in working state, so that the forward coating and the reverse coating processes are interchanged.

[0007] The third kind: one metering roller is arranged in the middle, two rubber rollers are arranged at the two ends of the metering roller, and rubber rollers are arranged below each rubber roller. When forward coating, the metering roller contacts with the forward coating rubber roller; when reverse coating, the metering roller contacts with the reverse coating rubber roller.

[0008] The above three kinds of modes can realize forward coating and reverse coating. However, with the increasing diversification of rubber coating products, the above rubber coating machines cannot meet the use requirements of the products.

[0009] Problem one: the above three kinds of rubber coating equipment need to be stopped for process switching when forward coating and reverse coating processes are switched; mode one: the rubber roller needs to be separated, then the existing rubber coating roller and the metering roller are cleaned, and then the metering roller and the rubber coating plate are replaced and installed in the work position. This switching needs a long working time and high labor intensity; mode two: the rubber roller needs to be separated, and then the rubber roller is replaced or the position of the rubber roller is changed. This switching needs a short time but still needs to be stopped for replacement. Mode three: the position of the rubber roller and the metering roller needs to be changed, and the switching time and labor intensity are large.

[0010] In the case of product research and development in scientific research institutions, the convenience of switching between forward coating and reverse coating processes seriously affects the state of the resin and the product quality, production cost, labor cost, delivery cycle and the like. Therefore, a forward coating and reverse coating method capable of switching between forward coating and reverse coating processes in the production process is needed.

[0011] Problem two: the rotation of the metering roller and the glue roller in the production process forms a force on the resin, the resin below the resin area flows in the direction of the roller surface rotation, a small part of the resin forms a film between the metering roller and the glue roller, most of the resin moves up to the top of the resin area with the metering roller, and then flows back to the bottom of the resin area from the top surface of the resin area. In actual use, the resin moves above the resin area and contacts the room temperature air, at which time the resin will be cooled, when the cooled resin flows back to the bottom of the resin area and contacts the glue roller, the cooled resin will form a film under the drive of the glue roller, at which time the glue stability and the glue precision will decrease due to the cooling of the resin. This problem seriously affects the product quality of the resin film, especially in the high viscosity resin coating process. Therefore, a high precision resin film coating system is needed to effectively solve the problem of temperature affecting the resin.

[0012] Problem three: in the continuous production process, resin is usually added by an automatic resin feeding device. When the workstations are switched, the resin feeding device also needs to be switched. At this time, the resin feeding device needs to consider the position moving ability, so the manufacturing cost of the resin feeding device is high and the use is complex. Therefore, a film coating system that can add resin in a fixed position is needed. SUMMARY

[0013] To solve the problems raised in the above background art, a process method for producing high-precision adhesive film by forward coating and reverse coating is provided, which is a film coating machine that can realize quick and non-stop switching between forward coating and reverse coating in the production process. At the same time, it can effectively improve the problem of glue precision fluctuation caused by the cooling of the surface layer resin in the glue coating process, and realize high-precision glue coating production.

[0014] The present application specifically provides a process method for producing high-precision adhesive film by forward coating and reverse coating, which structure includes a glue blocking assembly, a glue coating assembly, a forward coating metering assembly, a horizontal sliding adjustment assembly, a rubber assembly, a vertical support assembly, a reverse coating metering assembly, a glue scraping assembly and a support main frame, the glue coating assembly is arranged inside the top end of the support main frame, the rubber assembly is arranged at the lower end of the glue coating assembly, and the rubber assembly is slidably connected with the support main frame on both sides, the forward coating metering assembly is arranged at the front side of the glue coating assembly, the reverse coating metering assembly is arranged at the rear side of the glue coating mechanism, the glue blocking assembly is arranged between the upper end of the glue coating assembly and the inner side of the forward coating metering assembly and the inner side of the reverse coating metering assembly, the vertical support assembly is arranged on both sides of the outer side of the lower end of the forward coating metering assembly and the lower end of the reverse coating metering assembly, and the horizontal sliding adjustment assembly is arranged at the bottom end of the forward coating metering assembly and the bottom end of the reverse coating metering assembly, and the glue scraping assembly is arranged at the bottom end of the forward coating metering assembly and the top end of the reverse coating metering assembly.

[0015] Further, the gluing assembly comprises a gluing roller, a fixed bearing seat, a gluing rotating shaft and a gluing motor, the two ends of the gluing rotating shaft are rotatably connected to the middle part of the top end of the support frame through the fixed bearing seat, the gluing roller is arranged outside the middle end of the gluing rotating shaft, and the one end of the gluing rotating shaft is provided with the transmission-connected gluing motor.

[0016] Further, the gluing assembly comprises a gluing roller, a fixed bearing seat, a gluing rotating shaft and a gluing motor, the two ends of the gluing rotating shaft are rotatably connected to the middle part of the top end of the support frame through the fixed bearing seat, the gluing roller is arranged outside the middle end of the gluing rotating shaft, and the one end of the gluing rotating shaft is provided with the transmission-connected gluing motor.

[0017] Further, the gluing assembly comprises a gluing roller, a fixed bearing seat, a gluing rotating shaft and a gluing motor, the two ends of the gluing rotating shaft are rotatably connected to the middle part of the top end of the support frame through the fixed bearing seat, the gluing roller is arranged outside the middle end of the gluing rotating shaft, and the one end of the gluing rotating shaft is provided with the transmission-connected gluing motor.

[0018] Further, the rubber assembly comprises a rubber rotating shaft, a sliding bearing seat, a rubber telescopic rod, a rubber cylinder, a rubber roller and a rubber motor, the two sides of the support frame are fixedly provided with rubber cylinders, the upper end of each rubber cylinder is provided with a slidingly connected rubber telescopic rod, the upper end of each rubber telescopic rod is provided with a sliding bearing seat, and the front and rear sides of each sliding bearing seat are slidably connected to the support frame; the two ends of the rubber rotating shaft are transmissionally connected to the two sliding bearing seats, the rubber roller is arranged outside the middle end of the rubber rotating shaft, and the upper end of the rubber roller is vertically spaced from the lower end of the gluing roller.

[0019] Further, the rubber assembly comprises a rubber rotating shaft, a sliding bearing seat, a rubber telescopic rod, a rubber cylinder, a rubber roller and a rubber motor, the two sides of the support frame are fixedly provided with rubber cylinders, the upper end of each rubber cylinder is provided with a slidingly connected rubber telescopic rod, the upper end of each rubber telescopic rod is provided with a sliding bearing seat, and the front and rear sides of each sliding bearing seat are slidably connected to the support frame; the two ends of the rubber rotating shaft are transmissionally connected to the two sliding bearing seats, the rubber roller is arranged outside the middle end of the rubber rotating shaft, and the upper end of the rubber roller is vertically spaced from the lower end of the gluing roller.

[0020] Further, each of the vertical support assemblies comprises a support base, a support side plate and a support bearing seat, the support side plate is arranged in the middle of the upper end of the support base, the middle of the support bearing seat penetrates through the outer ends of the both sides of the metering rotating shaft and is correspondingly connected with the metering rotating shaft, and the support bearing seat is fixed on the middle of the upper end of the support side plate.

[0021] Further, each of the glue scraping assemblies comprises a fixed side frame, a glue scraping plate and a reset rotating cylinder, the four corners of the middle of the upper end of the support main frame are provided with glue scraping support frames, the both ends of the reset rotating cylinder are correspondingly connected and fixed with the glue scraping support frames on the both sides of one end through the fixed side frame, the outer end of the glue scraping plate is fixed on the inner end of the reset rotating cylinder, and the inner end of the glue scraping plate is correspondingly attached to the surface of the forward coating metering roller and the reverse coating metering roller.

[0022] Further, each of the horizontal sliding adjusting assemblies comprises a horizontal sliding block, a threaded sleeve, a sliding motor, a sliding threaded rotating shaft, a horizontal fixed base and a horizontal sliding rod, the four corners of the outer side of the upper end of the support main frame are provided with triangular support tables, the lower end of the horizontal fixed base is connected and fixed with the upper end of a single triangular support table, the sliding motor is arranged on the outer side of the horizontal fixed base, the sliding threaded rotating shaft is arranged in transmission connection between the inner end of the sliding motor and the inner side of the horizontal fixed base, the lower end of the horizontal sliding block is provided with the threaded sleeve, the middle of the threaded sleeve penetrates through the sliding threaded rotating shaft and is in meshing sliding connection with the sliding threaded rotating shaft, the horizontal sliding rods are arranged between the inner side of the horizontal fixed base and the both sides of the inner end of the sliding motor, the both sides of the lower end of the horizontal sliding block correspondingly penetrate through the horizontal sliding rods and are in sliding connection with the horizontal sliding rods, and the upper end of the horizontal sliding block is connected and fixed with the lower end of the support base.

[0023] Further, the glue coating roller, the reverse coating metering roller and the forward coating metering roller are all heating rollers.

[0024] Compared with the prior art, the main advantages of the present application are that the glue coating precision fluctuation problem caused by the temperature drop of the surface layer resin during the glue coating process can be effectively improved to realize high-precision glue coating production, the forward coating metering roller and the reverse coating metering roller are both involved in the glue coating production, the resin tank formed by the forward coating metering roller, the reverse coating metering roller and the glue coating roller makes the resin form an isolation plane on the top, the cooling resin on the surface layer in contact with the air cannot directly contact the glue coating roller, the process temperature of the glue coating roller in contact with the resin is stable, and the production quality is stable. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of a forward coating and reverse coating process method for producing high-precision glue film provided by the present application Figure 1 ; Figure 2 is a schematic diagram of a forward coating and reverse coating process method for producing high-precision glue film provided by the present application Figure 2 ; Figure 3is a schematic view of the glue coating assembly provided by the present application; Figure 4 is a schematic view of the glue scraping assembly provided by the present application; Figure 5 is a schematic view of the horizontal sliding adjustment assembly provided by the present application; Figure 6 is a schematic view of the glue blocking assembly provided by the present application.

[0026] Reference signs involved in the above figures: Glue blocking assembly; 101, glue blocking motor; 102, glue blocking rotating shaft; 103, glue blocking support; 104, glue blocking sliding cylinder; 105, glue blocking sliding block; 106, glue blocking sliding rail; 107, glue blocking plate; Glue coating assembly; 201, glue coating roller; 202, fixed bearing seat; 203, glue coating rotating shaft; 204, glue coating motor; Forward coating metering assembly; 301, forward coating metering roller; Horizontal sliding adjustment assembly; 401, horizontal sliding block; 402, threaded sleeve; 403, sliding motor; 404, sliding threaded rotating shaft; 405, horizontal fixed chassis; 406, horizontal sliding rod; Rubber assembly; 501, rubber rotating shaft; 502, sliding bearing seat; 503, rubber telescopic rod; 504, rubber air cylinder; 505, rubber roller; 506, rubber motor; Vertical support assembly; 601, support seat; 602, support side plate; 603, support bearing seat; Reverse coating metering assembly; 701, reverse coating metering roller; Glue scraping assembly; 801, fixed side frame; 802, glue scraping plate; 803, reset rotating cylinder; Support main frame; 10, metering motor; 11, glue scraping support frame; 12, metering rotating shaft; 13, motor fixed plate; 14, triangular support table. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application is further described in detail below in combination with the figures and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0028] The implementation of the present application is described in detail below in combination with specific examples.

[0029] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it should be understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] Referring to Figures 1-6 the preferred embodiments provided by the present application.

[0031] A process method for producing high-precision adhesive film by forward coating and reverse coating, which structure includes glue blocking assembly 1, glue coating assembly 2, forward coating metering assembly 3, horizontal sliding adjustment assembly 4, rubber assembly 5, vertical support assembly 6, reverse coating metering assembly 7, glue scraping assembly 8 and support main frame 9, glue coating assembly 2 is arranged inside the top end of support main frame 9, rubber assembly 5 is arranged at the lower end of glue coating assembly 2, and rubber assembly 5 is slidingly connected with support main frame 9 on both sides, forward coating metering assembly 3 is arranged at the front side of glue coating assembly 2 with a certain interval, reverse coating metering assembly 7 is arranged at the rear side of glue coating mechanism 2 with a certain interval, glue blocking assembly 1 is arranged between the upper end of glue coating assembly 2 and the inner side of forward coating metering assembly 3 and the inner side of reverse coating metering assembly 7, vertical support assembly 6 is arranged on both sides of the lower end of reverse coating metering assembly 7 and the lower end outer side of forward coating metering assembly 3, horizontal sliding adjustment assembly 4 is arranged at the bottom end of forward coating metering assembly 3 and the bottom end of reverse coating metering assembly 7, and glue scraping assembly 8 is arranged at the bottom end of forward coating metering assembly 3 and the top end of reverse coating metering assembly 7.

[0032] Glue coating assembly 2 includes glue coating roller 201, fixed bearing seat 202, glue coating shaft 203 and glue coating motor 204, glue coating shaft 203 is rotatably connected with the middle part of the top end of support main frame 9 through fixed bearing seat 202 at both ends, glue coating roller 201 is arranged outside the middle end of glue coating shaft 203, and glue coating motor 204 is arranged at one end of glue coating shaft 203.

[0033] Glue coating roller 201 can be forward rotated and reverse rotated by glue coating motor 204.

[0034] Forward coating metering assembly 3 includes forward coating metering roller 301, metering motor 10, metering shaft 12 and motor fixing plate 13, forward coating metering roller 301 is arranged outside the middle end of metering shaft 12, metering motor 10 is further arranged at one end of metering shaft 12 in a transmission connection mode, motor fixing plate 13 is fixedly connected with single-side vertical support assembly 6 at the lower end of metering motor 10, and forward coating metering roller 301 is horizontally and intervally arranged at the front end of glue coating roller 201.

[0035] The forward coating metering roller 301 can be reversed by the metering motor 10.

[0036] The reverse coating metering assembly 7 comprises a reverse coating metering roller 701, a metering motor 10, a metering shaft 12, and a motor fixing plate 13. The reverse coating metering roller 701 is arranged outside the middle end of the metering shaft 12. The metering shaft 12 is further provided with a transmission-connected metering motor 10 at one end. The metering motor 10 is provided with a motor fixing plate 13 fixedly connected with the single-side vertical support assembly 6 at the lower end. The front end of the reverse coating metering roller 701 is horizontally spaced apart from the rear end of the glue coating roller 201.

[0037] The reverse coating metering roller 701 can be forward rotated by the metering motor 10.

[0038] The rubber assembly 5 comprises a rubber shaft 501, a sliding bearing seat 502, a rubber telescopic rod 503, a rubber air cylinder 504, a rubber roller 505, and a rubber motor 506. The rubber air cylinders 504 are fixed on both sides of the support main frame 9. The rubber telescopic rods 503 are slidingly connected to the upper ends of the rubber air cylinders 504. The sliding bearing seats 502 are slidingly connected to the front and rear sides of the support main frame 9. The rubber shaft 501 is transmissionally connected to the two sliding bearing seats 502 at both ends. The rubber roller 505 is arranged outside the middle end of the rubber shaft 501. The upper end of the rubber roller 505 is vertically spaced apart from the lower end of the glue coating roller 201.

[0039] The rubber roller 505 can be forward rotated by the rubber motor 506. The sliding bearing seat 502, the rubber telescopic rod 503, and the rubber air cylinder 504 are arranged to facilitate the upward and downward movement of the rubber roller 505, so that the rubber roller 505 can approach or move away from the glue coating roller 201, and the gap value between the rubber roller 505 and the glue coating roller 201 can be adjusted.

[0040] The glue blocking assembly 1 comprises a glue blocking motor 101, a glue blocking shaft 102, a glue blocking support 103, a glue blocking sliding cylinder 104, a glue blocking sliding block 105, a glue blocking sliding rail 106, and a glue blocking plate 107. The glue blocking support 103 is fixedly connected to the top ends of the two glue scraping support frames 11 at the front and rear ends. The glue blocking motor 101 is arranged at the middle of one end of the glue blocking support 103. The glue blocking shaft 102 is arranged at the middle of the lower end of the glue blocking support 103 and is rotationally connected to the lower end of the glue blocking support 103 at both sides. One end of the glue blocking shaft 102 is transmissionally connected to the glue blocking motor 101. The glue blocking sliding cylinders 104 are slidingly connected to the middle ends of the glue blocking shaft 102 at both sides. The glue blocking plates 107 are fixedly connected to the lower ends of the glue blocking sliding cylinders 104. The glue blocking plates 107 are arranged between the glue coating roller 201, the forward coating metering roller 301, and the reverse coating metering roller 701. The glue blocking sliding blocks 105 are slidingly connected to the glue blocking sliding rails 106 at the upper ends of the glue blocking plates 107. The glue blocking sliding rails 106 are arranged at the lower ends of the glue blocking support 103 at both sides. The upper ends of the multiple glue blocking sliding blocks 105 are slidingly connected to the glue blocking sliding rails 106.

[0041] The highest point of the glue roller 201 is lower than the reverse coating metering roller 701 and the forward coating metering roller 301, and at this time, the three rollers form a groove type. Two glue blocking plates 107 are installed above the glue roller 201, inside the reverse coating metering roller 701 and inside the forward coating metering roller 301 to form a large groove; the groove formed by the two glue blocking plates 107 and the three rollers forms a resin tank, and the resin tank is filled with resin. At the same time, the two glue blocking plates 107 are moved towards each other by the glue blocking motor 101, the glue blocking shaft 102 and the glue blocking slide cylinder 104, so as to control the volume of the resin tank and the glue coating width.

[0042] Each vertical support assembly 6 includes a support seat 601, a support side plate 602 and a support bearing seat 603. The support side plate 602 is arranged at the middle of the upper end of the support seat 601. The support bearing seat 603 penetrates through the outer ends of both sides of the metering shaft 12 and is rotatably connected with the metering shaft 12 in correspondence, and the support bearing seat 603 is fixed to the middle of the upper end of the support side plate 602.

[0043] By arranging the support rod 602 and the support bearing seat 603, the metering shaft 12 is conveniently supported and fixed. By arranging the support seat 601, the horizontal sliding adjustment assembly 4 is conveniently connected and slides.

[0044] Each glue scraping assembly 8 includes a fixed side frame 801, a glue scraping plate 802 and a reset rotating cylinder 803. The support main frame 9 is provided with a glue scraping support frame 11 at the middle of the upper end of each corner. The reset rotating cylinder 803 is fixedly connected with the glue scraping support frames 11 at both ends and on one side through the fixed side frame 801. The outer end of the glue scraping plate 802 is fixed to the inner end of the reset rotating cylinder 803, and the inner end of the glue scraping plate 802 is correspondingly attached to the surface of the forward coating metering roller 301 and the reverse coating metering roller 701.

[0045] By arranging the glue scraping plate 802, the excess resin on the surface of the forward coating metering roller 301 and the reverse coating metering roller 701 can be scraped off. By arranging the reset rotating cylinder 803, the glue scraping plate 802 can be conveniently and timely pressed.

[0046] Each horizontal sliding adjusting assembly 4 comprises a horizontal sliding block 401, a threaded sleeve 402, a sliding motor 403, a sliding threaded rotating shaft 404, a horizontal fixed chassis 405 and a horizontal sliding rod 406, the outer side of the upper end of the support frame 9 is provided with a triangular support table 14 at each corner, the lower end of the horizontal fixed chassis 405 is connected and fixed with the upper end of a single triangular support table 14, the sliding motor 403 is arranged outside the horizontal fixed chassis 405, the inner end of the sliding motor 403 and the inner side of the horizontal fixed chassis 405 are provided with the transmission-connected sliding threaded rotating shaft 404, the middle end of the lower end of the horizontal sliding block 401 is provided with the threaded sleeve 402, the middle end of the threaded sleeve 402 penetrates through the sliding threaded rotating shaft 404 and is in sliding connection with the sliding threaded rotating shaft 404, the inner end of the sliding motor 403 and the inner side of the horizontal fixed chassis 405 are provided with the horizontal sliding rod 406 on both sides, the lower end of the horizontal sliding block 401 penetrates through the horizontal sliding rod 406 on both sides and is in sliding connection with the horizontal sliding rod 406, and the upper end of the horizontal sliding block 401 is connected and fixed with the lower end of the support seat 601.

[0047] The horizontal sliding block 401, the threaded sleeve 402, the sliding motor 403, the sliding threaded rotating shaft 404 and the horizontal sliding rod 406 are arranged, so that the forward coating metering roller 301 and the reverse coating metering roller 701 can be driven to move left and right, and can be close to or away from the rubber coating roller 201.

[0048] The rubber coating roller 201, the reverse coating metering roller 701 and the forward coating metering roller 301 are all heating rollers.

[0049] The rubber coating roller 201, the reverse coating metering roller 701 and the forward coating metering roller 301 are all heating rollers.

[0050] The specific implementation method of the present application is as follows: 1. Forward coating production preparation: The rubber coating roller 201, the reverse coating metering roller 701 and the forward coating metering roller 301 are preheated to a set temperature. Two rubber blocking plates 107 are fixed above the rubber coating roller 201, the reverse coating metering roller 701 is driven to move towards the rubber coating roller 201 by the horizontal sliding adjusting assembly 4, the gap between the rubber coating roller 201 and the reverse coating metering roller 701 is adjusted to 0.2 mm, which can be changed, and the value is large. Then the forward coating metering roller 301 is driven to move towards the rubber coating roller 201 by the horizontal sliding adjusting assembly 4, the gap between the rubber coating roller 201 and the forward coating metering roller 301 is adjusted according to the production weight by the horizontal sliding adjusting assembly 4, and the value is small, which is less than half of the large value. The rubber coating roller 201 is started to be reversely rotated at a speed v, the reverse coating metering roller 701 is forwardly rotated at a speed v1 / n, and the forward coating metering roller 301 is reversely rotated at a speed v1. The speeds v and v1 are related to the production speed, and n>1. Then the resin is added into the resin tank for heating, and the temperature of the resin is stabilized to the same temperature as that of the rubber coating roller 201.

[0051] 2、Reverse production: the release paper is passed between the rubber roller 505 and the glue roller 201 according to the diagram, the rubber roller 505 is driven to move towards the glue roller 201, and the gap value between the glue roller 201 and the rubber roller 505 is adjusted, so that the deformation amount of the contact surface of the rubber roller 505 and the glue roller 201 is consistent, and the complete transfer of the resin on the surface of the glue roller 201 can be confirmed by observing the state of the roller surface. The rubber roller 505 drives the release paper to contact the resin on the surface of the glue roller 201, and the resin is transferred to the surface of the release paper through the slow relative speed difference between the release paper block and the roller surface of the glue roller 201. The resin on the surface of the glue roller 201 follows the glue roller 201 to form a uniform resin film layer on the surface of the glue roller 201 after passing through the gap between the glue roller 201 and the reverse coating metering roller 301, and then forms a resin film product on the surface of the release paper. The resin that follows the glue roller 201 to move downward but does not pass through the gap between the glue roller 201 and the reverse coating metering roller 301 is driven by the reverse coating metering roller 301 to move upward along the surface of the metering roller and stop at the contact position of the glue scraper 802 and the reverse coating metering roller 301 under the block of the glue scraper 802. Under the continuous accumulation and pushing of the resin, the resin moves upward to the uppermost layer, which is the highest point of the resin on the side of the reverse coating metering roller 301 at this time, and the resin contacts the air and cools down under heat exchange. The cooled resin flows downward along the surface under the pushing of the subsequent resin and the self-weight. At the same time, when the reverse coating metering roller 701 rotates clockwise, the resin in contact with it is driven by the reverse coating metering roller 701 to move upward along the surface of the metering roller and stop at the contact position of the glue scraper 802 and the reverse coating metering roller 701 under the block of the glue scraper 802. Under the continuous accumulation and pushing of the resin, the resin moves upward to the uppermost layer, which is the highest point of the resin on the side of the reverse coating metering roller 701 at this time, and the resin contacts the air and cools down under heat exchange. The cooled resin also flows downward along the surface under the pushing of the subsequent resin and the self-weight. Because the rotating speed of the reverse coating metering roller 301 is higher than that of the reverse coating metering roller 701, the flow and speed of the resin in the direction of the reverse coating metering roller 301 are higher than those in the direction of the reverse coating metering roller 701. The cold area resin of the reverse coating metering roller 301 and the cooled resin of the reverse coating metering roller 701 contact and combine into a cooled resin group at the lowest point, which is close to the reverse coating metering roller 701. The cooled resin group slowly moves downward under the continuous accumulation due to the increase of the viscosity of the resin caused by the decrease of the temperature, and the flowability decreases. The middle layer resin is not affected by the viscosity and has high flowability, so it preferentially turns to contact the surface of the glue roller 201 and follows the roller surface of the glue roller 201 to move to the gap between the glue roller 201 and the reverse coating metering roller 301 to form a resin film layer. When the cooled resin group slowly moves downward, part of the outermost resin gradually warms up under heat conduction and gradually reaches the same temperature as the middle layer resin, and flows with the middle layer resin; most of the cooled resin group is captured by the rotating reverse coating metering roller 701 when it reaches the lower side because it is close to the reverse coating metering roller 701, and then follows it to move upward and is heated.The resin contacted by the glue roller 201 is the intermediate layer resin, and the temperature of the resin does not change after the cooling resin group is reheated and the resin is reheated after temperature reduction. The temperature of the mixed body is the same as the process temperature, so it does not affect the glue production, and ensures the stability of product production. The reverse coating metering roller 701 and the glue roller 201 form a triangular area in the middle, which is a closed and heat preservation area for the resin layer. The hot roller surface transmits heat to the upper resin by heat radiation, which assists in heating and heat preservation of the resin. The speed of the reverse coating metering roller 701 is adjusted according to the state of the resin in the resin tank. The resin liquid level needs to be kept continuous from the forward coating metering roller 301 to the reverse coating metering roller 701, and the lowest point of the resin intersection is close to the reverse coating metering roller 701.

[0052] 3. Reverse coating production preparation: the glue roller 201, the forward coating metering roller 301 and the forward coating metering roller 301 are preheated to the set temperature. Install the glue blocking plate above the glue roller 201, drive the forward coating metering roller 301 to move towards the glue roller 201, adjust the gap value between the glue roller 201 and the forward coating metering roller 301 to 0.2mm, which can be changed, and the large value. Then drive the reverse coating metering roller 701 to move towards the glue roller 201, adjust the gap value between the glue roller 201 and the reverse coating metering roller 701 according to the production gram weight, and adjust the small value, < large value / 2. Start the glue roller 201 reversible, speed v; the forward coating metering roller 301 rotates forward, speed v1 / n; the reverse coating metering roller 701 rotates reversely, speed v1. The speed v and v1 are related to the production speed; n>1 Then add resin to the resin tank, and stabilize the temperature of the resin to the same temperature as the temperature of the glue roller 201.

[0053] 4、Reverse coating production: the release paper is passed between the rubber roller 505 and the coating roller 201, the rubber roller 505 is driven to move towards the coating roller 201, and the gap between the coating roller 201 and the rubber roller 505 is adjusted, so that the deformation of the contact surface of the rubber roller 505 and the coating roller 201 is consistent, and the complete transfer of the resin on the surface of the coating roller 201 can be confirmed by observing the state of the coating roller 201. The rubber roller 505 drives the release paper to contact the resin on the surface of the coating roller 201, and the resin is transferred to the surface of the release paper by the relative rotation of the release paper and the coating roller 201. The resin on the surface of the coating roller 201 forms a uniform resin film layer on the surface of the coating roller 201 after passing through the gap between the coating roller 201 and the reverse coating metering roller 701, and then is transferred to the surface of the release paper to form a resin film product. The resin that follows the coating roller 201 and does not pass through the gap between the coating roller 201 and the reverse coating metering roller 701 is driven by the reverse coating metering roller 701 to move upwards along the surface of the metering roller and is stopped at the contact between the doctor blade 802 and the reverse coating metering roller 701 under the block of the doctor blade 802. Under the continuous accumulation and pushing of the resin, the resin moves upwards to the uppermost layer, which is the highest point of the resin on the side of the reverse coating metering roller 701 at this time, and the resin contacts the air and cools down under heat exchange. The cooled resin flows downwards along the surface under the pushing of the subsequent resin and the gravity. At the same time, when the forward coating metering roller 301 rotates clockwise, the resin in contact with it moves upwards along the surface of the metering roller under the driving of the reverse coating metering roller 701 and is stopped at the contact between the doctor blade 802 and the reverse coating metering roller 701 under the block of the doctor blade 802. Under the continuous accumulation and pushing of the resin, the resin moves upwards to the uppermost layer, which is the highest point of the resin on the side of the reverse coating metering roller 701 at this time, and the resin contacts the air and cools down under heat exchange. The cooled resin also flows along the surface under the pushing of the subsequent resin and the gravity. Because the reverse coating metering roller 701 rotates faster than the forward coating metering roller 301, the flow and speed of the resin in the direction of the reverse coating metering roller 701 are higher than those in the direction of the forward coating metering roller 301, and the cooled resin of the reverse coating metering roller 701 contacts and combines with the cooled resin of the forward coating metering roller 301 at the lowest point to form a cooled resin group, and the lowest point is close to the forward coating metering roller 301. The cooled resin group slowly moves downwards under the continuous accumulation due to the increase of the viscosity and the decrease of the flowability caused by the temperature reduction. The middle layer resin, which is not affected by the viscosity, has high flowability and preferentially turns to contact the surface of the coating roller 201, follows the surface of the coating roller 201 to move to the gap between the coating roller 201 and the reverse coating metering roller 701 to form a resin film layer. When the cooled resin group slowly moves downwards, part of the outermost resin gradually warms up under heat conduction and gradually reaches the same temperature as the middle layer resin, and flows with the middle layer resin; most of the cooled resin group is captured by the rotating forward coating metering roller 301 when it reaches the lower side and moves upwards with it, and is heated by it.The resin contacted by the gluing roller 201 is the intermediate layer resin, the temperature of which is not changed, and the temperature of the mixed body after the cooling resin group is re-heated and then re-cooled is the same, so the resin temperature is the same as the process temperature, thus not affecting the gluing production and ensuring the stability of product production. The intermediate triangular area between the forward coating metering roller 301 and the gluing roller 201 is a closed heat preservation area of the resin layer, and the hot roller surface transmits heat to the upper resin by heat radiation, thereby assisting in heating and heat preservation of the resin. The rotating speed of the forward coating metering roller 301 is adjusted according to the state of the resin in the resin tank, the resin liquid surface needs to be kept continuous from the forward coating metering roller 301 to the reverse coating metering roller 701, and the lowest point of the resin intersection is close to the forward coating metering roller 301.

[0054] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A process for producing high-precision film, forward and reverse coating, the structure comprising a glue blocking assembly (1), a glue coating assembly (2), a forward coating metering assembly (3), a horizontal sliding adjustment assembly (4), a rubber assembly (5), a vertical support assembly (6), a reverse coating metering assembly (7), a glue scraping assembly (8) and a support main frame (9), the glue coating assembly (2) is arranged inside the top end of the support main frame (9), the rubber assembly (5) is arranged at the lower end of the glue coating assembly (2), and the rubber assembly (5) is slidingly connected with the support main frame (9) on both sides, the forward coating metering assembly (3) is arranged at the front side of the glue coating assembly (2) with a certain interval, the reverse coating metering assembly (7) is arranged at the rear side of the glue coating assembly (2) with a certain interval, the glue blocking assembly (1) is arranged between the upper end of the glue coating assembly (2) and the inner side of the forward coating metering assembly (3) and the inner side of the reverse coating metering assembly (7), the vertical support assembly (6) is arranged on both sides of the lower end of the reverse coating metering assembly (7) and the lower end of the forward coating metering assembly (3), and the horizontal sliding adjustment assembly (4) is arranged at the bottom end of the forward coating metering assembly (3) and the bottom end of the reverse coating metering assembly (7), and the glue scraping assembly (8) is arranged at the bottom end of the forward coating metering assembly (3) and the top end of the reverse coating metering assembly (7).

2. A process for producing high precision film by forward and reverse coating as claimed in claim 1 wherein, The glue coating assembly (2) comprises a glue coating roller (201), a fixed bearing seat (202), a glue coating shaft (203) and a glue coating motor (204), the glue coating shaft (203) is rotatably connected with the middle part of the top end of the support main frame (9) through the fixed bearing seat (202) on both ends, the glue coating roller (201) is arranged outside the middle end of the glue coating shaft (203), and the glue coating motor (204) is arranged at one end of the glue coating shaft (203).

3. A process for producing high precision film by forward and reverse coating as claimed in claim 2 wherein, The forward coating metering assembly (3) comprises a forward coating metering roller (301), a metering motor (10), a metering shaft (12) and a motor fixing plate (13), the forward coating metering roller (301) is arranged outside the middle end of the metering shaft (12), the metering motor (10) is further arranged at one end of the metering shaft (12) in a transmission connection mode, the motor fixing plate (13) is fixedly connected with the single vertical support assembly (6) at the lower end of the metering motor (10), and the forward coating metering roller (301) is horizontally and intervally arranged at the front end of the glue coating roller (201).

4. A process for producing high precision film by forward and reverse coating as claimed in claim 3 wherein, The reverse coating metering assembly (7) comprises a reverse coating metering roller (701), a metering motor (10), a metering shaft (12) and a motor fixing plate (13), the reverse coating metering roller (701) is arranged outside the middle end of the metering shaft (12), the metering motor (10) is further arranged at one end of the metering shaft (12) in a transmission connection mode, the motor fixing plate (13) is fixedly connected with the single vertical support assembly (6) at the lower end of the metering motor (10), and the reverse coating metering roller (701) is horizontally and intervally arranged at the rear end of the glue coating roller (201).

5. A process for producing high precision film by forward and reverse coating as claimed in claim 4 wherein, The rubber assembly (5) comprises a rubber rotating shaft (501), a sliding bearing seat (502), a rubber telescopic rod (503), a rubber cylinder (504), a rubber roller (505) and a rubber motor (506), rubber cylinders (504) are fixed on both sides of the support main frame (9), rubber telescopic rods (503) are slidably connected to the upper ends of the rubber cylinders (504), sliding bearing seats (502) are arranged at the upper ends of the rubber telescopic rods (503), the sliding bearing seats (502) are slidably connected to the support main frame (9) on the front and back sides, the rubber rotating shaft (501) is drivingly connected to the sliding bearing seats (502) at the two ends, the rubber roller (505) is arranged outside the middle end of the rubber rotating shaft (501), and the upper end of the rubber roller (505) is vertically spaced from the lower end of the glue coating roller (201).

6. A process for producing high precision film by forward and reverse coating as claimed in claim 5 wherein, The glue blocking assembly (1) comprises a glue blocking motor (101), a glue blocking rotating shaft (102), a glue blocking support (103), a glue blocking sliding cylinder (104), a glue blocking sliding block (105), a glue blocking sliding rail (106) and a glue blocking plate (107), the glue blocking support (103) is fixedly connected to the top ends of the two glue scraping support frames (11) on the front and back sides, the glue blocking motor (101) is arranged at the middle of one end of the glue blocking support (103), the glue blocking rotating shaft (102) is arranged at the middle of the lower end of the glue blocking support (103) and is rotatably connected to the lower end of the glue blocking support (103) on the two sides, one end of the glue blocking rotating shaft (102) is drivingly connected to the glue blocking motor (101), the glue blocking sliding cylinders (104) are slidably connected to the two sides of the middle end of the glue blocking rotating shaft (102), the glue blocking plates (107) are fixed to the lower ends of the glue blocking sliding cylinders (104), the glue blocking plates (107) are arranged between the glue coating roller (201), the forward coating metering roller (301) and the reverse coating metering roller (701), the glue blocking sliding blocks (105) are arranged on the upper end of each glue blocking plate (107) on the front and back sides, the glue blocking sliding rails (106) are arranged on the lower end of the glue blocking support (103) on the front and back sides, and the upper ends of the plurality of glue blocking sliding blocks (105) are slidably connected to the glue blocking sliding rails (106).

7. A process for producing high precision film by forward and reverse coating as claimed in claim 6 wherein, Each vertical support assembly (6) comprises a support seat (601), a support side plate (602) and a support bearing seat (603), the support side plate (602) is arranged at the middle of the upper end of the support seat (601), the support bearing seat (603) penetrates through the outer ends of the two sides of the metering rotating shaft (12) and is rotatably connected to the metering rotating shaft (12), and the support bearing seat (603) is fixed to the middle of the upper end of the support side plate (602).

8. A process for producing high precision film by forward and reverse coating as claimed in claim 7 wherein, Each of the glue scraping assembly (8) includes fixed side frame (801), glue scraping plate (802) and reset cylinder (803), the support main frame (9) upper end middle part four corners are equipped with the glue scraping support frame (11), the reset cylinder (803) both ends and one end both sides glue scraping support frame (11) are fixed through fixed side frame (801) corresponding connection, the glue scraping plate (802) outer end is fixed in the reset cylinder (803) inner end outside, and the glue scraping plate (802) inner end downside is with the surface of the forward coating metering roller (301), the reverse coating metering roller (701) corresponding paste.

9. A process for producing high precision film by forward and reverse coating as claimed in claim 8 wherein, Each of the horizontal sliding adjustment assembly (4) includes horizontal sliding block (401), threaded sleeve (402), sliding motor (403), sliding threaded shaft (404), horizontal fixed base (405) and horizontal slide bar (406), the support main frame (9) upper end outside four corners are equipped with triangular support table (14), the horizontal fixed base (405) lower end is connected with the upper end of single triangular support table (14) and is fixed, the sliding motor (403) is arranged outside the horizontal fixed base (405), the sliding motor (403) inner end and the inner side of horizontal fixed base (405) are equipped with the sliding threaded shaft (404) of transmission connection, the threaded sleeve (402) is equipped in the horizontal sliding block (401) lower end middle end, the threaded sleeve (402) middle end passes through the sliding threaded shaft (404) and is engaged with the sliding threaded shaft (404) and is slidably connected, the sliding motor (403) inner end both sides and the inner side of horizontal fixed base (405) both sides are equipped with horizontal slide bar (406), the horizontal sliding block (401) lower end both sides correspond to pass through the horizontal slide bar (406) and are slidably connected with the horizontal slide bar (406), the horizontal sliding block (401) upper end is connected with the lower end of support seat (601) and is fixed.

10. A process for producing high precision film by forward and reverse coating as claimed in claim 9 wherein, The glue roller (201), the reverse coating metering roller (701) and the forward coating metering roller (301) are heating rollers.

11. The process for producing high-precision adhesive film according to claims 1-10, the process is as follows:

1. Forward coating production preparation: The glue roller (201), reverse coating metering roller (701), forward coating metering roller (301) are preheated to the set temperature. Two glue blocking plates (107) are fixed above the glue roller (201), the reverse coating metering roller (701) is driven to move towards the glue roller (201) by the horizontal sliding adjustment assembly (4), and the gap value between the glue roller (201) and the reverse coating metering roller (701) is adjusted to 0.2mm (changeable, large value). Then the forward coating metering roller (301) is driven to move towards the glue roller (201) by the horizontal sliding adjustment assembly (4), and the gap value between the glue roller (201) and the forward coating metering roller (301) is adjusted according to the production gram weight by the horizontal sliding adjustment assembly (4) (adjust according to the glue amount, small value, < large value / 2). Start the glue roller (201) reversible, speed v; The reverse coating metering roller (701) rotates forward at speed v1 / n, and the forward coating metering roller (301) rotates backward at speed v1. (The speed v and v1 are related to the production speed; n>1) Then add resin into the resin tank and heat it until the temperature of the resin is the same as that of the glue roller (201); 2、Reverse production: the release paper is passed between the rubber roller (505) and the glue roller (201) according to the diagram, the rubber roller (505) is driven to move towards the glue roller (201), and the gap value between the glue roller (201) and the rubber roller (505) is adjusted, so that the deformation amount of the contact surface of the rubber roller (505) and the glue roller (201) is consistent and the resin of the glue roller (201) is completely transferred (which can be confirmed by observing the state of the roller surface of the glue roller (201)). The rubber roller (505) drives the release paper to contact the resin on the surface of the glue roller (201) and transfers the resin to the surface of the release paper through the relative speed difference between the release paper (block) and the roller surface (slow) of the glue roller (201). The resin on the surface of the glue roller (201) forms a uniform resin film layer on the surface of the glue roller (201) after passing through the gap between the glue roller (201) and the forward coating metering roller (301), and then is transferred to the surface of the release paper to form a resin film product. The resin that follows the glue roller (201) downward but does not pass through the gap between the glue roller (201) and the forward coating metering roller (301) is driven by the forward coating metering roller (301) to move upward along the surface of the metering roller and stop at the contact position of the glue scraper (802) and the forward coating metering roller (301) under the block of the glue scraper (802). Under the continuous accumulation and pushing of the resin, the resin moves upward to the uppermost layer (at this time, the highest point of the resin on the side of the forward coating metering roller (301)), at which time the resin contacts the air and cools down under heat exchange, and the cooled resin flows downward along the surface under the pushing of the subsequent resin and the self-weight. At the same time, when the reverse coating metering roller (701) rotates clockwise, the resin in contact with it is driven by the reverse coating metering roller (701) to move upward along the surface of the metering roller and stop at the contact position of the glue scraper (802) and the reverse coating metering roller (701) under the block of the glue scraper (802). Under the continuous accumulation and pushing of the resin, the resin moves upward to the uppermost layer (at this time, the highest point of the resin on the side of the reverse coating metering roller (701)), at which time the resin contacts the air and cools down under heat exchange, and the cooled resin also flows downward along the surface under the pushing of the subsequent resin and the self-weight. Because the rotating speed of the forward coating metering roller (301) is higher than that of the reverse coating metering roller (701), the resin flow and speed in the direction of the forward coating metering roller (301) are higher than those in the direction of the reverse coating metering roller (701), and the cooled resin of the forward coating metering roller (301) contacts and combines with the cooled resin of the reverse coating metering roller (701) at the lowest point to form a cooled resin group, and the lowest point is close to the reverse coating metering roller (701). The cooled resin group slowly moves downward under the continuous accumulation due to the increase of resin viscosity and the decrease of flowability caused by the decrease of temperature. The middle layer resin is not affected by viscosity and has high flowability, so it preferentially turns to contact the surface of the glue roller (201) and follows the roller surface of the glue roller (201) to move to the gap between the glue roller (201) and the forward coating metering roller (301) to form a resin film layer.Cooling resin group in slow down, a part of the most outside resin gradually warming gradually with the middle layer resin temperature is the same, and follow the flow of the middle layer resin; most of the cooling resin group in to reach the lower due to the proximity of the reverse coating metering roller (701), so the rotating reverse coating metering roller (701) capture follow its upward movement, and heating. Glue roller (201) contact with the resin is the middle layer resin (temperature unchanged) and cooling resin group after the temperature of the resin (after cooling and heating, the temperature is the same) mixture, because the resin temperature and process temperature is the same, so as not to affect the coating production, to ensure the stability of product production; The middle triangular area between the reverse coating metering roller (701) and the glue roller (201) is a closed heat preservation area for the resin layer, and the hot roller surface transfers heat to the resin above by thermal radiation, assisting in heating and preserving the resin; The speed of the reverse coating metering roller (701) is adjusted according to the state of the resin in the resin tank, and the resin liquid level needs to be kept continuous from the forward coating metering roller (301) to the reverse coating metering roller (701), and the lowest point of the intersection of the resins is close to the reverse coating metering roller (701); 3、Reverse coating production preparation: the glue roller (201), the forward coating metering roller (301), the forward coating metering roller (301) are preheated to the set temperature. The glue blocking plate is installed above the glue roller (201), the forward coating metering roller (301) is driven to move to the glue roller (201), the gap value between the glue roller (201) and the forward coating metering roller (301) is adjusted to 0.2mm (changeable, large value). Then the reverse coating metering roller (701) is driven to move to the glue roller (201), the gap value between the glue roller (201) and the reverse coating metering roller (701) is adjusted according to the production gram weight (small value, < large value / 2) according to the glue amount. Start the glue roller (201) reversible, speed v; the forward coating metering roller (301) is forward, speed v1 / n; the reverse coating metering roller (701) is reversed, speed v1. (The speed v and v1 are related to the production speed; n>1) Then add resin to the resin tank, and stabilize the resin temperature to the same temperature as the glue roller (201) temperature; 4、Reverse coating production: the release paper is shown through the rubber roller (505) and the glue roller (201), the rubber roller (505) is driven to move to the glue roller (201), and the gap value between the glue roller (201) and the rubber roller (505) is adjusted, so that the deformation of the contact surface of the rubber roller (505) and the glue roller (201) is consistent, and the resin of the glue roller (201) is completely transferred (which can be confirmed by observing the state of the roller surface of the glue roller (201)). The rubber roller (505) drives the release paper to contact the resin on the surface of the glue roller (201) and transfers the resin to the surface of the release paper through the relative rotation of the release paper and the surface of the glue roller (201). The resin on the surface of the glue roller (201) forms a uniform resin film layer on the surface of the glue roller (201) after passing through the gap between the glue roller (201) and the reverse coating metering roller (701), and then forms a resin film product on the surface of the release paper. The resin that follows the glue roller (201) and does not pass through the gap between the glue roller (201) and the reverse coating metering roller (701) is driven by the reverse coating metering roller (701) to move upward along the surface of the metering roller and stop at the contact between the scraper (802) and the reverse coating metering roller (701). Under the continuous accumulation and pushing of the resin, the resin moves upward to the uppermost layer (at this time, the highest point of the resin on the side of the reverse coating metering roller (701)), at which time the resin contacts the air and cools down through heat exchange, and the cooled resin flows downward along the surface under the pushing of the subsequent resin and the self-weight. At the same time, when the clockwise rotating reverse coating metering roller (701) contacts the resin, the resin moves upward along the surface of the metering roller and stops at the contact between the scraper (802) and the reverse coating metering roller (701) under the blocking of the scraper (802). Under the continuous accumulation and pushing of the resin, the resin moves upward to the uppermost layer (at this time, the highest point of the resin on the side of the reverse coating metering roller (701)), at which time the resin contacts the air and cools down through heat exchange, and the cooled resin flows downward along the surface under the pushing of the subsequent resin and the self-weight. Because the reverse coating metering roller (701) rotates at a higher speed than the forward coating metering roller (301), the resin flow and speed in the direction of the reverse coating metering roller (701) are higher than those in the direction of the forward coating metering roller (301), and the cooled resin of the reverse coating metering roller (701) contacts and combines with the cooled resin of the forward coating metering roller (301) at the lowest point to form a cooled resin group, and the lowest point is close to the forward coating metering roller (301). The cooled resin group slowly moves downward under the continuous accumulation due to the increase of resin viscosity and the decrease of flowability caused by the decrease of temperature. The middle layer resin preferentially turns to contact the surface of the glue roller (201) due to the high flowability caused by the unaffected viscosity, and follows the roller surface of the glue roller (201) to move to the gap between the glue roller (201) and the reverse coating metering roller (701) to form a resin film layer.When the cooling resin group slowly moves downward, a part of the outermost resin gradually warms up under heat conduction and gradually reaches the same temperature as the intermediate layer resin, and flows with the intermediate layer resin; most of the cooling resin group is captured by the rotating coating metering roller (301) after reaching the lower side, and then moves upward with the coating metering roller (301) and is heated. The resin contacted by the glue roller (201) is a mixture of the intermediate layer resin (temperature unchanged) and the re-heated resin (cooled and then re-heated, same temperature) of the cooling resin group, and since the resin temperature is the same as the process temperature, it does not affect the glue production, ensuring the stability of product production. The triangular area between the forward coating metering roller (301) and the glue roller (201) is closed and heat-insulated with the resin layer, the hot roller surface transfers heat to the upper resin by heat radiation, and assists in heating and heat-insulating the resin; The speed of the forward coating metering roller (301) is adjusted according to the state of the resin in the resin tank, the resin liquid level from the forward coating metering roller (301) to the reverse coating metering roller (701) needs to be continuous, and the resin intersection (the lowest point) is close to the forward coating metering roller (301).

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