A continuous pressing device and process for preparing a composite film

Abstract

The present invention relates to the technical field of composite film preparation, and particularly to a continuous pressing device and process for composite film preparation. Regarding the problem that existing composite film encapsulation equipment is difficult to adaptively adjust the tension on the film according to the film thickness. It includes a mounting frame, a sliding plate is slidably connected to the mounting frame, mirror-image support frames are fixedly connected to the sliding plate, a guiding roller is rotatably connected to the support frames, a sliding frame is slidably and limitedly connected to the support frames, a supporting roller is rotatably connected to the sliding frame, a limiting rod is fixedly connected to the sliding frame, a pushing plate is slidably connected to the limiting rod, and a spring is fixedly connected between the pushing plate and the sliding frame. By controlling the movement of the pushing plate on the limiting rod, the present invention achieves the purpose of controlling the extrusion force of the supporting roller on the film, keeping the surface of the film flat during the encapsulation process, and avoiding the situation of generating bubbles due to wrinkles, which affects the quality of the composite film prepared by this device.

Description

Technical Field

[0001] The present invention relates to a continuous pressing device and process for preparing a composite film in the technical field of composite film preparation technology. Background Art

[0002] A composite film is a multi-layer composite structure similar to a sandwich formed by mixing a polymer, an organic solvent, and various additives to form an adhesive, and then sandwiching and encapsulating the adhesive with two thin films. Existing encapsulation devices for preparing composite films usually apply the adhesive on one side of the thin film, and then press another thin film against the adhesive through a roller. After curing treatment, the preparation of the composite film can be completed. However, the existing thin films for preparing composite films have different specifications and different thicknesses. In order to ensure the flatness of the surface of different thin films before bonding, different magnitudes of tension need to be applied according to the thickness of the thin film. However, the existing composite film encapsulation devices cannot automatically adjust the magnitude of the tension according to the thickness of the thin film. If the tension applied by the device is inappropriate, it is easy to cause wrinkles or deformation of the thin film, resulting in protrusions and bubbles inside the finally prepared composite film, and further reducing the overall encapsulation efficiency and processing quality of the composite film. Summary of the Invention

[0003] In order to solve the problem that it is difficult for existing composite film encapsulation equipment to adaptively adjust the magnitude of the tension applied to the thin film according to the thickness of the thin film, the present invention provides a continuous pressing device and process for preparing a composite film.

[0004] The technical solution of the present invention is: A continuous pressing device for preparing a composite film, comprising a mounting frame, on which a feeding device and a glue coating device are arranged. The mounting frame is rotatably connected with a pair of mirror-image driving rollers and unwinding rollers, and is rotatably connected with a pair of mirror-image rotating rollers. The mounting frame is slidably connected with a sliding plate, and a spring is fixedly connected between the sliding plate and the mounting frame. The sliding plate is fixedly connected with a pair of mirror-image support frames, and a guiding roller is rotatably connected to the support frame. A sliding frame is slidably and limit-connected to the support frame on the side close to the driving roller, and a supporting roller is rotatably connected to the sliding frame. The sliding frame is fixedly connected with a limiting rod penetrating through the adjacent support frame, and the limiting rod is slidably connected with a pushing plate. A spring is fixedly connected between the pushing plate and the sliding frame. On the side of the mounting frame away from the driving roller, a pair of uniformly arranged and mirror-image sliding blocks are slidably connected, and the uniformly arranged sliding blocks are jointly rotatably connected with a pressing roller. The mounting frame is provided with a transmission mechanism for controlling the movement of the thin film, and the mounting frame is provided with a monitoring mechanism for detecting the thickness of the thin film.

[0005] Preferably, as the present invention, the transmission mechanism includes a first motor, which is fixedly connected to one side of the mounting frame close to the driving roller. The output shaft of the first motor is fixedly connected to the adjacent driving roller. The mirror-image driving rollers are driven by a gear set. The mounting frame is fixedly connected with a second motor, and the output shaft of the second motor is fixedly connected to the adjacent rotating roller. The mirror-image rotating rollers are driven by a gear set. A spring is fixedly connected between the sliding block and the mounting frame. A pressure sensing sheet is provided on the support frame far from the sliding frame. The limiting rod is in pressing fit with the pressure sensing sheet of the adjacent support frame. The sliding block is slidably connected with a sliding support block, and a one-way wheel is provided on the sliding support block. A spring is fixedly connected between the sliding block and the corresponding sliding support block.

[0006] Preferably, as the present invention, the distance between the mirror-image pressing rollers is greater than the distance between the mirror-image one-way wheels, so as to enable the one-way wheels to press and fit the film.

[0007] Preferably, as the present invention, the monitoring mechanism includes mirror-image square frames, which are both fixedly connected to one side of the mounting frame close to the rotating roller. The square frames are slidably connected with mirror-image support blocks. A spring is fixedly connected between the support block and the corresponding square frame. The support blocks on the mirror-image square frames close to the same adjacent rotating roller are jointly rotatably connected with a clamping roller. The support block close to the second motor is provided with a tension control component for controlling the movement of the pushing plate. The support block on one side inside the square frame far from the second motor is provided with a pressing control component for controlling the pressing force of the encapsulating composite film.

[0008] Preferably, as the present invention, the tension control component includes a first fixed cylinder, which is fixedly connected to the support block close to the second motor. A first piston rod is slidably connected inside the first fixed cylinder, and the first piston rod is fixedly connected to the adjacent support block. The first fixed cylinder is communicated with a first liquid guide pipe. A second fixed cylinder communicated with the first liquid guide pipe is fixedly connected to one side of the sliding plate close to the sliding frame. A second piston rod fixedly connected to the pushing plate is hermetically slidably connected inside the second fixed cylinder.

[0009] Preferably, as the present invention, the pressing control component includes a third fixed cylinder, which is fixedly connected to the support block on one side inside the square frame far from the second motor. A third piston rod is hermetically slidably connected inside the third fixed cylinder, and the third piston rod is fixedly connected to the adjacent support block. The third fixed cylinder is communicated with a second liquid guide pipe. The mounting frame is fixedly connected with a fourth fixed cylinder communicated with the second liquid guide pipe. A fourth piston rod in pressing fit with the corresponding sliding block is hermetically slidably connected inside the fourth fixed cylinder.

[0010] As a preference of the present invention, it further includes a flattening mechanism. The flattening mechanisms are all arranged on the mounting frame. The flattening mechanism is used to flatten the film. The flattening mechanism includes a support plate. The support plate is fixedly connected to the mounting frame. The support plate is slidably connected with mirror-image sliding bent rods. A spring is fixedly connected between the sliding bent rod and the support plate. The sliding bent rods are jointly rotatably connected to a support shaft. The sliding bent rod is hinged with a rotating plate. The rotating plate is rotatably connected with evenly distributed rotating wheels. The evenly distributed rotating wheels on the same rotating plate jointly support a belt. The second fixed cylinder is provided with a pressure control component for controlling the vertical flattening force of the film.

[0011] As a preference of the present invention, the contact surface of the belt and the film on the rotating plate and the contact surface of the support shaft and the film are in the same vertical plane, so that the corresponding belt on the rotating plate is in close contact with the adjacent film.

[0012] As a preference of the present invention, the pressure control component includes a guide tube. The guide tube is communicated with one side of the second fixed cylinder close to the push plate. Mirror-image sliding bent rods are both fixedly connected with liquid storage cylinders communicated with the guide tube. The liquid storage cylinder is hermetically slidably connected with a sliding rod penetrating the corresponding sliding bent rod. A spring is fixedly connected between the sliding rod and the corresponding rotating plate.

[0013] As a preference of the present invention, a continuous pressing process for composite film preparation, based on the above-mentioned continuous pressing device for composite film preparation, includes the following steps:

[0014] S1: Pass the film on the unwinding roller through two rotating rollers and two clamping rollers. Start the second motor. The two rotating rollers convey the film downward. Put the film on the feeding device into the two driving rollers. Start the first motor and convey the film to the right. The two films are attached and jointly pass between two pressing rollers and four one-way wheels, and finally enter the winding device.

[0015] S2: After the two films enter the winding device, reverse the first motor and the second motor. The rotating roller and the driving roller convey the film in the reverse direction. The films between the one-way wheels and the rotating roller and the driving roller all contract. The films between the one-way wheels and the rotating roller squeeze the guide roller and the sliding frame, and the two films are tightened.

[0016] S3: When the film passes between the two clamping rollers, the two clamping rollers move relative to each other. The two clamping rollers control the second piston rod through hydraulic oil to drive the push plate to move. The push plate controls the extrusion force of the support roller on the film through a spring.

[0017] S4: The two clamping rollers move relative to each other. The two clamping rollers control the fourth piston rod through hydraulic oil to squeeze the corresponding sliding block, and the extrusion force of the two pressing rollers on the two films between them changes.

[0018] S5: The second fixed cylinder controls the movement of the sliding rod through hydraulic oil, and the sliding rod controls the inclination angle of the corresponding belt on the rotating plate through a spring. The corresponding inclined belt on the rotating plate flattens the surface of the film.

[0019] The beneficial effects of the present invention are as follows: 1. By controlling the movement of the pushing plate on the limiting rod, the present invention achieves the purpose of controlling the extrusion force of the supporting roller on the film, keeping the surface of the film flat during the encapsulation process, and avoiding the generation of bubbles due to wrinkles, which affects the quality of the composite film prepared by this device.

[0020] 2. Through the extrusion of the film by the one-way wheel in the transmission mechanism, a stable tension is maintained during the film conveying process, ensuring the integrity and stability of the prepared composite film.

[0021] 3. Through the extrusion of the sliding block by the fourth piston rod in the pressing control component, the purpose of stable conveying of the encapsulated composite film by the pressing roller is achieved, ensuring the continuity of the processing of this device.

[0022] 4. By rotating the rotating plate on the sliding bent rod in the flattening mechanism, the purpose of controlling the vertical tension of the film is achieved, ensuring the overall flatness of the film and improving the applicability of this device to unexpected situations of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 is a three-dimensional structural schematic diagram of the parts at the mounting frame and the unwinding roller of the present invention;

[0025] Figure 3 is a three-dimensional structural schematic diagram of the parts at the support frame and the guide roller of the present invention;

[0026] Figure 4 is a three-dimensional structural schematic diagram of the parts at the limiting rod and the pushing plate of the present invention;

[0027] Figure 5 is a three-dimensional structural schematic diagram of the parts at the sliding block and the pressing roller of the present invention;

[0028] Figure 6 is a three-dimensional structural schematic diagram of the parts at the square frame and the first fixed cylinder of the present invention;

[0029] Figure 7 is a three-dimensional structural schematic diagram of the parts at the first liquid guide pipe and the second fixed cylinder of the present invention;

[0030] Figure 8 is a cross-sectional view of the parts at the third fixed cylinder and the third piston rod of the present invention;

[0031] Figure 9Schematic three-dimensional structure diagram of the parts at the fourth fixed cylinder and the fourth piston rod of the present invention;

[0032] Figure 10 Schematic three-dimensional structure diagram of the parts at the support plate and the sliding bent rod of the present invention;

[0033] Figure 11 Schematic three-dimensional structure diagram of the parts at the second fixed cylinder and the guide tube of the present invention;

[0034] Figure 12 Cross-sectional view of the parts at the guide tube and the liquid storage cylinder of the present invention.

[0035] The markings in the figure are: 11 - mounting bracket, 12 - feeding device, 13 - gluing device, 14 - driving roller, 15 - rotating roller, 16 - unwinding roller, 17 - sliding plate, 18 - support frame, 19 - guide roller, 110 - sliding frame, 111 - support roller, 112 - limiting rod, 113 - pushing plate, 114 - sliding block, 115 - pressing roller, 2 - transmission mechanism, 201 - first motor, 202 - second motor, 203 - sliding support block, 204 - one-way wheel, 3 - monitoring mechanism, 301 - square frame, 302 - support block, 303 - clamping roller, 4 - tension control assembly, 401 - first fixed cylinder, 402 - first piston rod, 403 - first liquid guide tube, 404 - second fixed cylinder, 405 - second piston rod, 5 - pressing control assembly, 501 - third fixed cylinder, 502 - third piston rod, 503 - second liquid guide tube, 504 - fourth fixed cylinder, 505 - fourth piston rod, 7 - flattening mechanism, 701 - support plate, 702 - sliding bent rod, 703 - support shaft, 704 - rotating plate, 705 - rotating wheel, 8 - pressure control assembly, 801 - guide tube, 802 - liquid storage cylinder, 803 - sliding rod. Detailed implementation manners

[0036] Next, in conjunction with the attached Figures 1-12 , the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0037] Embodiment 1: A continuous pressing device for composite film preparation, as Figures 1-5As shown in the figure, it includes a mounting frame 11. The mounting frame 11 is provided with a control panel. A feeding device 12 and a gluing device 13 are arranged on the mounting frame 11. The gluing device 13 is located on the right side of the feeding device 12. The mounting frame 11 is rotatably connected with two driving rollers 14 and a feeding roller 16 which are vertically mirrored. Both driving rollers 14 are located between the feeding device 12 and the gluing device 13. The feeding roller 16 is located in the middle of the mounting frame 11. The mounting frame 11 is rotatably connected with two rotating rollers 15 which are horizontally mirrored. A sliding plate 17 is slidably connected to the middle of the mounting frame 11. The sliding plate 17 only slides up and down on the mounting frame 11. A spring is fixedly connected between the sliding plate 17 and the mounting frame 11 to maintain the tendency of the two sliding plates 17 to approach each other. Two support frames 18 which are horizontally mirrored are fixedly connected to the lower side of the sliding plate 17. A guiding roller 19 is rotatably connected to the lower side of the support frame 18. The left side of the two guiding rollers 19 is higher than the right side in the vertical direction for guiding the film. The film is attached to the composite film through the right guiding roller 19. A sliding frame 110 is slidably and limit-connected to the left support frame 18. The sliding frame 110 is located on the left side of the sliding plate 17. A support roller 111 is rotatably connected to the left side of the sliding frame 110. A limiting rod 112 is fixedly connected to the middle of the right side of the sliding frame 110. The limiting rod 112 penetrates through the left support frame 18. A pushing plate 113 is slidably connected to the limiting rod 112. A spring is fixedly connected between the pushing plate 113 and the sliding frame 110. Sliding blocks 114 which are evenly distributed and vertically mirrored are slidably connected to the right side of the mounting frame 11. The two vertically mirrored sliding blocks 114 are rotatably connected to a pressing roller 115 together. The mounting frame 11 is provided with a transmission mechanism 2 for controlling the movement of the film. The mounting frame 11 is provided with a monitoring mechanism 3 for detecting the thickness of the film. The feeding device 12, the gluing device 13 and the transmission mechanism 2 are all electrically connected to the control panel. By moving the position of the pushing plate 113 on the limiting rod 112, the elastic force of the spring connected to the pushing plate 113 is controlled, so as to achieve the purpose of controlling the film tension, avoid wrinkles on the surface of the film during the conveying process, and prevent bubbles from appearing in the encapsulated composite film, which affects the processing quality and yield of this device.

[0038] As Figure 1 and Figures 3-5As shown in the figure, the transmission mechanism 2 includes a first motor 201, which is fixedly connected to the left side of the mounting frame 11. The output shaft of the first motor 201 is fixedly connected to the lower driving roller 14. The two driving rollers 14 are driven by a gear set. When the first motor 201 starts, the two driving rollers 14 rotate synchronously and oppositely through the gear set to convey the composite film to the right. The mounting frame 11 is fixedly connected with a second motor 202, and the output shaft of the second motor 202 is fixedly connected to the adjacent rotating roller 15. The two rotating rollers 15 are driven by a gear set. When the second motor 202 starts, the two rotating rollers 15 rotate synchronously and oppositely through the gear set. A spring is fixedly connected between the sliding block 114 and the mounting frame 11, and the two pressing rollers 115 are brought closer by the sliding block 114. A pressure sensing piece is arranged on the right support frame 18, and the limiting rod 112 is in pressing fit with the pressure sensing piece of the adjacent support frame 18 to judge whether the sliding frame 110 is perpendicular to the adjacent film. The right side of the sliding block 114 is slidably connected with a sliding support block 203, and the sliding support block 203 is provided with a one-way wheel 204. The one-way wheel 204 has unidirectionality and can only make the composite film it contacts move to the right. A spring is fixedly connected between the sliding block 114 and the corresponding sliding support block 203. The distance between the mirror-image pressing rollers 115 is greater than the distance between the mirror-image one-way wheels 204, so as to press and fit the film by the one-way wheel 204. Both the first motor 201 and the second motor 202 are electrically connected to the control panel. Through the unidirectional conveying of the composite film by the one-way wheel 204, the packaged composite film only moves unidirectionally, which is convenient for the stable adjustment of the tension of the film at the initial stage and ensures that the film maintains a stable tension during the conveying process.

[0039] As Figure 1 and Figures 6-8 shown in the figure, the monitoring mechanism 3 includes two square frames 301 that are mirror images of each other front and back. Both square frames 301 are fixedly connected to the upper side of the mounting frame 11. The square frames 301 are slidably connected with two support blocks 302 that are mirror images of each other left and right. Springs are fixedly connected between the support blocks 302 and the corresponding square frames 301. The support blocks 302 on the same side of the two square frames 301 are jointly rotatably connected with a clamping roller 303. By moving the two clamping rollers 303, the synchronous approach or separation of the two support blocks 302 in the same square frame 301 is controlled. The support block 302 on the right side in the front square frame 301 is provided with a tension control component 4 for controlling the movement of the pushing plate 113, and the support block 302 on the right side in the rear square frame 301 is provided with a pressing control component 5 for controlling the pressing force of the packaged composite film. The thickness of the film is detected by the distance between the two clamping rollers 303.

[0040] As Figure 1 and Figures 6-9As shown, the tension control assembly 4 includes a first fixed cylinder 401, which is fixedly connected to the support block 302 on the right side inside the front square frame 301. A first piston rod 402 is slidably connected inside the first fixed cylinder 401, and the first piston rod 402 is fixedly connected to the support block 302 on the left side inside the front square frame 301. The two support blocks 302 in the front square frame 301 move away from each other, causing the first piston rod 402 to extend out of the corresponding first fixed cylinder 401. The left side of the first fixed cylinder 401 is communicated with a first liquid guide pipe 403. The left side of the sliding plate 17 is fixedly connected to a second fixed cylinder 404, and the second fixed cylinder 404 is communicated with the first liquid guide pipe 403. A second piston rod 405 is slidably and sealingly connected to the second fixed cylinder 404, and the second piston rod 405 is fixedly connected to the pushing plate 113. Hydraulic oil is filled in the left side inside the first fixed cylinder 401, the first liquid guide pipe 403, and the right side inside the second fixed cylinder 404. The movement distance of the pushing plate 113 is controlled by the second piston rod 405 through the flow of the hydraulic oil in the first liquid guide pipe 403.

[0041] As Figure 1 and Figures 6-9 shown, the pressing control assembly 5 includes a third fixed cylinder 501, which is fixedly connected to the support block 302 on the right side of the rear square frame 301. A third piston rod 502 is slidably and sealingly connected to the third fixed cylinder 501, and the third piston rod 502 is fixedly connected to the support block 302 on the left side inside the rear square frame 301. The two support blocks 302 in the rear square frame 301 move away from each other, causing the third piston rod 502 to extend out of the corresponding third fixed cylinder 501. The left side of the third fixed cylinder 501 is communicated with a second liquid guide pipe 503. The mounting bracket 11 is fixedly connected to a fourth fixed cylinder 504, and the fourth fixed cylinder 504 is communicated with the second liquid guide pipe 503. A fourth piston rod 505 is slidably and sealingly connected to the fourth fixed cylinder 504, and the fourth piston rod 505 is in extrusion fit with the corresponding sliding block 114. The fourth piston rod 505 moves downward under the action of the hydraulic oil to extrude and push the corresponding sliding block 114 downward. Hydraulic oil is filled in the left side of the third fixed cylinder 501 and the second liquid guide pipe 503. The fourth piston rod 505 is pushed downward by the two clamping rollers 303 to push the corresponding sliding block 114 downward, achieving the purpose of controlling the clamping force when the two pressing rollers 115 fit the two films, and ensuring the tightness of the fit of the two films during processing.

[0042] When the operator uses this device to perform the encapsulation and preparation work of the composite film, the operator first places the film to be coated on the feeding device 12, places the roller wound with the film at the unwinding roller 16, and pulls the film out from the unwinding roller 16 through between the two clamping rollers 303 and the two rotating rollers 15. The two support blocks 302 corresponding to the two clamping rollers 303 in the square frame 301 move away from each other.

[0043] After the film is inserted between the two rotating rollers 15, the operator starts the second motor 202 through the control panel. The second motor 202 drives the right rotating roller 15 to rotate counterclockwise (viewed from front to back). The two upper rotating rollers 15 rotate synchronously and oppositely through the gear set. The two rotating rollers 15 convey the film passing through the two clamping rollers 303 downward. The film bypasses the support roller 111 and the two guiding rollers 19 and moves to the right. The guiding rollers 19 drive the sliding plate 17 to move upward through the corresponding support frames 18. The sliding plate 17 compresses the spring connected to it. The sliding plate 17 maintains a pressing force on the film below it under the elastic force of the spring connected to it. Then, after the two films pass between the two pressing rollers 115 and the two pairs of one-way wheels 204, they are finally placed into the composite film winding device on the right side of the device. At this time, the film between the rotating roller 15 and the winding device is in a slack state. At the same time, the control panel starts the first motor 201. The film to be coated with glue is conveyed to the right through between the two driving rollers 14. After the first motor 201 is started, the output shaft of the first motor 201 drives the lower driving roller 14 to rotate clockwise (viewed from front to back). The two driving rollers 14 rotate synchronously and oppositely through the gear set. When the film enters between the two driving rollers 14, the two driving rollers 14 convey the film to the right. This film also passes through the lower side of the right guiding roller 19 and enters the composite film winding device on the right side of the device together with the film led out by the unwinding roller 16. When the leading ends of the two films are fixed in the winding device, the first motor 201 and the second motor 202 stop. The two pressing rollers 115 clamp the film through the springs of the corresponding sliding blocks 114. Then, the control panel controls the output shafts of the first motor 201 and the second motor 202 to rotate in the reverse direction. Since the one-way wheels 204 all have one-way properties, the parts of the two films from the one-way wheels 204 to the inside of the winding device do not move. The reverse rotation of the output shaft of the second motor 202 causes the two rotating rollers 15 to convey the film between them upward. The film between the rotating roller 15 and the one-way wheel 204 is tightened. The film on the upper side of the two rotating rollers 15 accumulates. The reverse rotation of the output shaft of the first motor 201 causes the two driving rollers 14 to convey the film between them to the left. The film between the driving roller 14 and the one-way wheel 204 is tightened synchronously.

[0044] During the reverse rotation of the second motor 202, the film tightened between the rotating roller 15 and the pressing roller 115 presses against the sliding frame 110 and the supporting roller 111. The sliding frame 110 drives the supporting roller 111 and the limiting rod 112 to move to the right. The spring between the sliding frame 110 and the pushing plate 113 is compressed. After the sliding frame 110 is perpendicular to the film on its upper side, the limiting rod 112 presses against the pressure sensing piece of the corresponding support frame 18, and the second motor 202 stops. At this time, the operator rotates the unwinding roller 16 to rewind the film accumulated on the upper side of the rotating roller 15 onto the unwinding roller 16. When the surface of the film between the driving roller 14 and the pressing roller 115 is flat, the first motor 201 stops. Subsequently, the control panel starts the feeding device 12, the gluing device 13, the first motor 201 and the second motor 202. The composite film winding device on the right side of the device is started synchronously. The gluing device 13 evenly applies the adhesive on the upper side of the film. The film coated with the adhesive continuously moves to the right. The second motor 202 rotates the two rotating rollers 15 in opposite directions to convey the film on the unwinding roller 16 downward. The pressing roller 115 rotates synchronously, and the moving speeds of the two films are the same.

[0045] During the rightward movement of the film, when the film coated with the adhesive moves to the right guiding roller 19, the two guiding rollers 19 cooperate with the supporting roller 111 to guide the upper film to adhere to the adhesive on the lower film. At the same time, the two pressing rollers 115 on the right press and convey the two adhered films to the right. The spring connected to the sliding support block 203 presses the corresponding one-way wheels 204 against the surfaces of the two films. Moreover, the one-way wheels 204 themselves have unidirectionality. The four one-way wheels 204 jointly act to clamp and adhere the edges of the two films and convey them to the right, achieving the purpose of stably conveying the composite film and avoiding the reverse shrinkage movement of the film caused by the tension force, which affects the quality of the composite film preparation.

[0046] As the film drawn from the unwinding roller 16 enters between the two clamping rollers 303, the two clamping rollers 303 move away from each other. The two front support blocks 302 move away from each other and compress the springs connected thereto. The two front support blocks 302 moving away from each other drive the first piston rod 402 to extend from the corresponding first fixed cylinder 401. The space on the left side of the first piston rod 402 in the first fixed cylinder 401 decreases, and the hydraulic oil in the first fixed cylinder 401 enters the second fixed cylinder 404 through the first liquid guide pipe 403. The hydraulic oil on the right side of the second piston rod 405 in the second fixed cylinder 404 increases, and the second piston rod 405 moves leftward. The second piston rod 405 drives the pushing plate 113 to move leftward synchronously. The spring between the sliding frame 110 and the corresponding pushing plate 113 is compressed. During the process of tightening the film between the rotating roller 15 and the one-way wheel 204, when the sliding frame 110 is perpendicular to the film on its upper side, the squeezing force of the sliding frame 110 on the film through the support roller 111 increases, that is, the tension of the film between the rotating roller 15 and the one-way wheel 204 increases. By detecting the thickness of the film through the two clamping rollers 303 and then moving the position of the pushing plate 113, the purpose of controlling the tension when the film adheres to the corresponding film is achieved, ensuring that films of different thicknesses can keep their surfaces flat through stable tension, and improving the quality and stability of composite film preparation.

[0047] During the process of the two clamping rollers 303 moving away from each other, the two rear support blocks 302 move away synchronously and compress the springs connected thereto. The two support blocks 302 in the same square frame 301 at the rear moving away from each other drive the third piston rod 502 to extend from the third fixed cylinder 501. The space on the left side of the third piston rod 502 in the third fixed cylinder 501 decreases, and the hydraulic oil in the third piston rod 502 enters the fourth fixed cylinder 504 through the second liquid guide pipe 503. The hydraulic oil on the upper side of the fourth piston rod 505 in the fourth fixed cylinder 504 increases, and the fourth piston rod 505 moves downward. The fourth piston rod 505 squeezes the corresponding sliding block 114 at the rear. The sliding block 114 drives the upper pressing roller 115 to move downward. The lower pressing roller 115 is squeezed, and the lower pressing roller 115 causes the two sliding blocks 114 on the lower side to compress the springs connected thereto, thereby increasing the clamping force between the two pressing rollers 115. The sliding block 114 drives the corresponding one-way wheel 204 to move synchronously through the spring and the corresponding sliding support block 203, ensuring the tightness of the one-way wheel 204 against the edges of the two films. By squeezing the corresponding sliding block 114 with the fourth piston rod 505, the magnitude of the pressing force of the two pressing rollers 115 on the film is controlled, achieving the purpose of controlling the clamping force of the adhering film according to the thickness of the film, avoiding the situation that the thickness of the film increases while the pressing force remains unchanged, resulting in insufficient tightness of the two films being adhered and affecting the quality of composite film packaging.

[0048] When the composite film packaging is completed, the control panel stops the feeding device 12, the gluing device 13, the first motor 201, the second motor 202 and the winding device on the right side of the device, and the operator manually lifts the two one-way wheels 204 on the upper side to cut off the packaging completed part, and at the same time, the output shafts of the first motor 201 and the second motor 202 are rotated in the opposite direction through the control panel. When the two films are moved away from the lower side of the guide roller 19, the sliding plate 17 drives the related parts to move downward and restore to the initial position under the elastic force of the spring connected to it, and the sliding frame 110 moves to the left and restores to the initial position under the elastic force of the spring connected to it. After the unused film is pulled out from between the active rollers 14, the second motor 202 and the first motor 201 stop, and the two support blocks 302 in the same square frame 301 approach each other and restore to their initial positions under the elastic force of the springs connected thereto, and the two clamping rollers 303 approach each other and restore to their initial positions, and the first piston rod 402 moves into the first fixed cylinder 401, and the third piston rod 502 moves into the third fixed cylinder 501, and the hydraulic oil in the second fixed cylinder 404 and the fourth fixed cylinder 504 both perform the above-mentioned reverse movement, and the push plate 113 and the fourth piston rod 505 both restore to their initial positions. At this point, all parts have restored to their initial positions and are ready for next use.

[0049] Embodiment 2: Based on embodiment 1, Figure 1 and Figures 10-12 As shown, it also includes a flattening mechanism 7, which is arranged on the mounting frame 11. The flattening mechanism 7 is used to flatten the film. The flattening mechanism 7 includes a support plate 701, which is fixed to the middle part of the mounting frame 11. The support plate 701 is slidably connected to two sliding curved rods 702 of front and rear mirror images. A spring is fixed between the sliding curved rod 702 and the support plate 701. The left side of the sliding curved rod 702 is rotatably connected to a support shaft 703. The sliding curved rod 702 is hinged with a rotating plate 704. The two rotating plates 704 are located outside the two sliding curved rods 702. Initially, the two rotating plates 704 are in a state of tilting from top to bottom to the outside. The rotating plates 704 are rotatably connected to A plurality of evenly distributed rotating wheels 705, and the evenly distributed rotating wheels 705 on the same rotating plate 704 are jointly provided with a belt, and the contact surface between the corresponding belt and the film on the rotating plate 704 and the contact surface between the support shaft 703 and the film are in the same vertical plane, which is used to make the corresponding belt on the rotating plate 704 in close contact with the adjacent film, and the second fixed cylinder 404 is provided with a pressure control component 8 for controlling the vertical flattening force of the film, and the belts on the two inclined rotating plates 704 are fitted with the film to achieve the purpose of controlling the tension stretching of the film in the front-to-back direction, avoiding wrinkles in the film in the front-to-back direction, and avoiding bubbles in the packaged composite film to affect the packaging quality of the composite film.

[0050] like Figures 10-12As shown in the figure, the pressure control component 8 includes a guide tube 801. The guide tube 801 is connected to the left side of the second fixed cylinder 404. Both sliding bent rods 702 are fixedly connected with liquid storage cylinders 802. The opposite sides of the two liquid storage cylinders 802 are both connected to the guide tube 801. The liquid storage cylinder 802 is hermetically and slidably connected with a sliding rod 803. The sliding rod 803 penetrates the corresponding sliding bent rod 702. A spring is fixedly connected between the sliding rod 803 and the corresponding rotating plate 704. The spring of the sliding rod 803 keeps the corresponding rotating plate 704 in an inclined state, ensuring that the belt on the rotating plate 704 stretches the film in the front and back directions during the movement of the film, so as to ensure the flatness of the film surface when the film is attached to the adhesive. Hydraulic oil is filled in the left side of the guide tube 801, the second fixed cylinder 404 and the opposite sides of the two guide tubes 801. By driving the movement of the spring connected to it by the sliding rod 803, the purpose of changing the initial inclination angle of the belt on the rotating plate 704 is achieved, so that the device can control the tension of the film in the front and back directions according to the thickness of the film, ensuring the flatness of the film surface when the film is attached to the adhesive.

[0051] In order to avoid wrinkles in the film wound by the unwinding roller 16 or vertical wrinkles in the film during the guiding process of the device, it is necessary to stretch the film in the front and back directions during transportation to avoid the occurrence of wrinkles or bulges, which may cause bubbles in the packaged composite film, affecting the quality of the composite film packaging and reducing the yield of the composite film packaging. The specific operation is as follows: Repeat the above-mentioned film installation steps. Taking the upper unwinding roller 16 as an example, when the second motor 202 controls the two rotating rollers 15 to reverse and tighten the film on the left side of the pressing roller 115, the film squeezes the support shaft 703, and the support shaft 703 drives the two sliding bent rods 702 to move to the right. The sliding bent rods 702 slide into the support plate 701 and compress the springs connected to them. When the second motor 202 stops, the support shaft 703 has a certain squeezing force on the film. Repeat the above-mentioned composite film packaging operation.

[0052] During the process of the two clamping rollers 303 moving away from each other, the second piston rod 405 in the second fixed cylinder 404 moves to the left, the space on the left side of the second piston rod 405 in the second fixed cylinder 404 decreases, and the hydraulic oil on the left side of the second piston rod 405 in the second fixed cylinder 404 enters the two liquid storage cylinders 802 through the guide pipe 801. The hydraulic oil in the liquid storage cylinders 802 increases. Taking the sliding bent rod 702 on the front side as an example, the sliding rod 803 in the liquid storage cylinder 802 moves forward, and the sliding rod 803 makes the rotation angle of the rotating plate 704 swing forward larger through the spring. As the upper film is conveyed downward, several rotating wheels 705 on the same rotating plate 704 rotate under the drive of the belt on it and the film. Due to the certain extrusion force between the film and the belt, when the film moves, the belts on several adjacent rotating wheels 705 rotate. Since the belt is in an inclined state, when the belt and the film move synchronously, the film moves to the front and rear sides under the guidance of the belt. Under the reaction force of the film, the belt makes the corresponding rotating plate 704 swing downward to compress the corresponding spring. When the position of the belt is stable, the compression amount of the spring between the rotating plate 704 and the corresponding sliding rod 803 remains stable, thereby achieving the purpose of adjusting the tensile force of the belt on the film in the front and rear directions according to the thickness of the film, flattening the film through tension in the front and rear directions, and avoiding the presence of wrinkles in the front and rear directions on the film, which affects the final packaging result of the composite film.

[0053] When the device is reset by repeating the above operations after use, the second piston rod 405 moves into the corresponding second fixed cylinder 404, the liquid storage cylinder 802 drives the corresponding spring to move back into the corresponding guide pipe 801, and the sliding rod 803 and related parts all return to their initial positions, waiting for the next use.

[0054] Embodiment 3: On the basis of Embodiment 2, a continuous pressing process for preparing a composite film is applied to the above-mentioned continuous pressing device for preparing a composite film, and includes the following steps:

[0055] S1: Pass the film on the unwinding roller 16 through the two rotating rollers 15 and the two clamping rollers 303. Start the second motor 202, and the two rotating rollers 15 convey the film downward. Put the film on the feeding device 12 into the two driving rollers 14, start the first motor 201, and convey the film to the right. The two films are attached and jointly pass between the two pressing rollers 115 and the four one-way wheels 204, and finally enter the winding device.

[0056] S2: After the two films enter the winding device, reverse the first motor 201 and the second motor 202. The rotating rollers 15 and the driving rollers 14 convey the film in the reverse direction. The films between the one-way wheels 204 and the rotating rollers 15 and the driving rollers 14 all shrink. The films between the one-way wheels 204 and the rotating rollers 15 squeeze the guide roller 19 and the sliding frame 110, and the two films are tightened.

[0057] S3: When the film passes between the two clamping rollers 303, the two clamping rollers 303 move relative to each other. The two clamping rollers 303 control the second piston rod 405 through hydraulic oil to drive the pushing plate 113 to move, and the pushing plate 113 controls the extrusion force of the supporting roller 111 on the film through a spring;

[0058] S4: The two clamping rollers 303 move relative to each other. The two clamping rollers 303 control the fourth piston rod 505 through hydraulic oil to squeeze the corresponding sliding block 114, and the extrusion force of the two pressing rollers 115 on the two films therebetween changes;

[0059] S5: The second fixed cylinder 404 controls the sliding rod 803 to move through hydraulic oil. The sliding rod 803 controls the inclination angle of the corresponding belt on the rotating plate 704 through a spring, and the corresponding inclined belt on the rotating plate 704 flattens the surface of the film.

[0060] The above describes the present invention and its embodiments. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they should all fall within the protection scope of the present invention.

Claims

1. A continuous pressing device for preparing a composite film, characterized in that: It includes a mounting frame, on which a feeding device and a gluing device are arranged. The mounting frame is rotatably connected with a pair of mirror-image driving rollers and unwinding rollers, and is rotatably connected with a pair of mirror-image rotating rollers. The mounting frame is slidably connected with a sliding plate, and a spring is fixedly connected between the sliding plate and the mounting frame. The sliding plate is fixedly connected with a pair of mirror-image support frames, and each support frame is rotatably connected with a guiding roller. A sliding frame is limitedly slidably connected to the support frame on the side close to the driving roller, and the sliding frame is rotatably connected with a supporting roller. The sliding frame is fixedly connected with a limiting rod penetrating through the adjacent support frame, and the limiting rod is slidably connected with a pushing plate. A spring is fixedly connected between the pushing plate and the sliding frame. On the side of the mounting frame far from the driving roller, a pair of evenly arranged and mirror-image sliding blocks are slidably connected, and the evenly arranged sliding blocks are jointly rotatably connected with a pressing roller. The mounting frame is provided with a transmission mechanism for controlling the movement of the film, and the mounting frame is provided with a monitoring mechanism for detecting the thickness of the film; The monitoring mechanism includes a pair of mirror-image square frames, and the mirror-image square frames are fixedly connected to the side of the mounting frame close to the rotating roller. Each square frame is slidably connected with a pair of mirror-image support blocks, and a spring is fixedly connected between each support block and the corresponding square frame. The support blocks on the mirror-image square frames close to the same adjacent rotating roller are jointly rotatably connected with a clamping roller. The support block close to the second motor is provided with a tension control component for controlling the movement of the pushing plate, and the support block on the inner side of the square frame far from the second motor is provided with a pressing control component for controlling the pressing force of the encapsulating composite film; The tension control component includes a first fixed cylinder, which is fixedly connected to the support block close to the second motor. A first piston rod is slidably connected in the first fixed cylinder, and the first piston rod is fixedly connected to the adjacent support block. The first fixed cylinder is communicated with a first liquid guide pipe, and a second fixed cylinder communicated with the first liquid guide pipe is fixedly connected to the side of the sliding plate close to the sliding frame. A second piston rod fixedly connected to the pushing plate is hermetically slidably connected in the second fixed cylinder; The pressing control component includes a third fixed cylinder, which is fixedly connected to the support block on the inner side of the square frame far from the second motor. A third piston rod is hermetically slidably connected in the third fixed cylinder, and the third piston rod is fixedly connected to the adjacent support block. The third fixed cylinder is communicated with a second liquid guide pipe, and a fourth fixed cylinder communicated with the second liquid guide pipe is fixedly connected to the mounting frame. A fourth piston rod in extrusion fit with the corresponding sliding block is hermetically slidably connected in the fourth fixed cylinder; It further includes a flattening mechanism, and the flattening mechanisms are all arranged on the mounting frame. The flattening mechanism is used to flatten the film. The flattening mechanism includes a support plate, the support plate is fixedly connected to the mounting frame, the support plate is slidably connected with mirror-image sliding bent rods, a spring is fixedly connected between the sliding bent rods and the support plate, the sliding bent rods are commonly rotatably connected to a support shaft, the sliding bent rods are hinged with rotating plates, the rotating plates are rotatably connected with uniformly distributed rotating wheels, and the uniformly distributed rotating wheels on the same rotating plate are commonly provided with a belt. The second fixed cylinder is provided with a pressure control assembly for controlling the vertical flattening force of the film.

2. The continuous pressing device for preparing a composite film according to claim 1, wherein: The transmission mechanism includes a first motor, the first motor is fixedly connected to one side of the mounting frame close to the driving roller, the output shaft of the first motor is fixedly connected to the adjacent driving roller, the mirror-image driving rollers are driven by a gear set, the mounting frame is fixedly connected with a second motor, the output shaft of the second motor is fixedly connected to the adjacent rotating roller, the mirror-image rotating rollers are driven by a gear set, a spring is fixedly connected between the sliding block and the mounting frame, a pressure sensing sheet is arranged on the support frame far from the sliding frame, the limiting rod is in extrusion fit with the pressure sensing sheet of the adjacent support frame, the sliding block is slidably connected with a sliding support block, the sliding support block is provided with a one-way wheel, and a spring is fixedly connected between the sliding block and the corresponding sliding support block.

3. A continuous lamination device for preparing a composite film according to claim 2, characterized in that: mirror image The distance between the pressing rollers is greater than the distance between the mirror-image one-way wheels, so that the one-way wheels press and fit the film.

4. A continuous pressing device for preparing a composite film according to claim 3, characterized in that: The contact surface of the belt and the film on the rotating plate and the contact surface of the support shaft and the film are in the same vertical plane, so that the corresponding belt on the rotating plate is in close contact with the adjacent film.

5. The continuous lamination device for preparing a composite film according to claim 4, characterized in that: The pressure control assembly includes a guide pipe, the guide pipe is communicated with one side of the second fixed cylinder close to the push plate, mirror-image sliding bent rods are both fixedly connected with liquid storage cylinders communicated with the guide pipe, the liquid storage cylinders are hermetically and slidably connected with sliding rods penetrating through the corresponding sliding bent rods, and a spring is fixedly connected between the sliding rods and the corresponding rotating plates.

6. A continuous pressing process for preparing a composite film, characterized in that: A continuous pressing device for composite film preparation according to claim 5, the specific use method includes the following steps: S1: Pass the film on the unwinding roller through two rotating rollers and two clamping rollers, start the second motor, the two rotating rollers convey the film downward, put the film on the feeding device into the two driving rollers, start the first motor, convey the film to the right, the two films are attached and jointly pass between two pressing rollers and four one-way wheels, and finally enter the winding device; S2: After the two films enter the winding device, reverse the first motor and the second motor, the rotating rollers and the driving rollers convey the film in the reverse direction, the films between the one-way wheels and the rotating rollers and the driving rollers all shrink, the films between the one-way wheels and the rotating rollers extrude the guide roller and the sliding frame, and the two films are tightened; S3: When the film passes between the two clamping rollers, the two clamping rollers move relative to each other, the two clamping rollers control the second piston rod to drive the push plate to move through hydraulic oil, and the push plate controls the extrusion force of the support roller on the film through a spring; S4: The two clamping rollers move relative to each other. The two clamping rollers control the fourth piston rod through hydraulic oil to extrude the corresponding sliding blocks, and the extrusion force of the two pressing rollers on the two films between them changes; S5: The second fixed cylinder controls the movement of the sliding rod through hydraulic oil. The sliding rod controls the inclination angle of the corresponding belt on the rotating plate through a spring, and the corresponding inclined belt on the rotating plate flattens the surface of the film.

Images