A composite film production device with an antistatic layer uniform coating adjustment mechanism

Abstract

This utility model discloses a composite film production device with an antistatic layer uniform coating adjustment mechanism, comprising: a coating machine housing, inside which a set of coating rollers and two sets of drive rollers are rotatably installed. The two sets of drive rollers are distributed on both sides of the coating rollers, allowing the raw material roll to pass through the lower side of the outer surface of one set of drive rollers and then sequentially pass through the upper side of the outer surface of the coating roller and the other set of drive rollers. Two sets of U-shaped frames are fixedly installed on the upper surface of one end of the coating machine housing, and a scraping mechanism is slidably installed in the two sets of U-shaped frames. Through the design of the scraping mechanism, this application allows the height of the pressure plate to be adjusted by a threaded rod according to the thickness of the raw material roll and the target antistatic layer thickness, so that it slides and contacts the upper surface of the raw material roll to maintain the uniform shape of the raw material roll. At the same time, the spacing of the U-shaped scrapers is adjusted by an electric push rod to accurately scrape off excess coating from the lower surface of the raw material roll, realizing the on-demand control of the antistatic layer thickness and effectively avoiding problems such as excessively thick or thin coatings or local accumulation.

Description

Technical Field

[0001] This utility model relates to the technical field of composite film production equipment, specifically a composite film production equipment with an antistatic layer uniform coating adjustment mechanism. Background Technology

[0002] In many industrial fields such as modern packaging, electronic component protection, and new energy materials, composite films have become indispensable key basic materials due to their excellent physical and mechanical properties, barrier properties, and cost advantages. As downstream applications continue to upgrade their functional requirements for composite films, antistatic performance has gradually become one of the core indicators for measuring the quality of composite films. Especially in scenarios such as electronic component packaging and precision instrument protection, static electricity accumulation can easily lead to component damage, data interference, and even safety hazards. Therefore, extremely high requirements are placed on the coating quality of the antistatic layer on the surface of the composite film.

[0003] For example, patent CN210906702U discloses a coating and preparation device for a composite film, including a coating box. The coating box contains four sets of guide wheels, each consisting of two sets of vertically distributed guide wheels. A support shaft extends through the center of each guide wheel, and the front and rear ends of the support shaft are respectively inserted into the front and rear inner walls of the coating box. A composite film body is positioned between the vertically distributed guide wheels. In this invention, a return hole is provided on the support partition, allowing excess material sprayed onto the surface of the composite film body to flow back into the coating chamber for reuse, saving coating material, reducing operating costs, and promoting energy conservation and environmental protection. Furthermore, the composite film body can be quickly air-dried after coating, improving processing efficiency and reducing the space occupied during drying, thus making efficient use of space.

[0004] However, the aforementioned composite film coating device lacks a precise coating amount control structure. The original device only achieves coating adhesion through spraying and does not have a coating adjustment component that works in conjunction with the guide wheel assembly. When the composite film body is affected by differences in substrate thickness (such as variations in film thickness between different batches) or changes in coating viscosity (such as changes in coating fluidity due to ambient temperature), the spray amount cannot be dynamically adjusted according to the substrate state. This can easily lead to local coating accumulation or an excessively thin coating on the film surface. Especially in scenarios such as electronic protection and food preservation where high coating thickness accuracy is required, it is difficult to ensure consistent product performance. Utility Model Content

[0005] The purpose of this invention is to provide a composite film production device with an antistatic layer uniform coating adjustment mechanism to solve the problem mentioned in the background art that, in the composite film coating process, due to the lack of a coating adjustment component that works in conjunction with the guide wheel assembly, the spray volume cannot be dynamically adjusted according to the fluctuation of the substrate thickness and the change of the coating viscosity, which in turn leads to local coating accumulation or an excessively thin coating on the film surface, making it difficult to meet the requirements for coating thickness accuracy and performance consistency in scenarios such as electronic protection and food preservation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A composite film production apparatus with an antistatic layer uniform coating adjustment mechanism includes: a coating machine housing, in which a set of coating rollers and two sets of drive rollers are rotatably installed, the two sets of drive rollers being distributed on both sides of the coating rollers, so that the raw material roll passes through the lower side of the outer surface of the first set of drive rollers and then passes through the upper side of the outer surface of the coating roller and the other set of drive rollers in sequence; two sets of U-shaped frames are fixedly installed on the upper surface of one end of the coating machine housing, and a scraping mechanism is slidably installed in the two sets of U-shaped frames.

[0007] Preferably, a storage cylinder is fixedly installed at the lower end of the coating machine housing. The storage cylinder is perpendicular to the coating roller, and the lower half of the outer surface of the coating roller is submerged in the storage cylinder.

[0008] Preferably, a first motor and a second motor are fixedly installed at one end of the coating machine housing. The output shaft of the first motor passes through the coating machine housing and is fixedly connected to the coating roller. The output shaft of the second motor passes through the coating machine housing and is fixedly connected to one of the transmission rollers. This allows the first motor and the second motor to drive the coating roller and one of the transmission rollers to rotate clockwise and counterclockwise, respectively.

[0009] Preferably, a transmission disc is fixedly installed at one end of each of the two sets of transmission rollers, and a synchronous belt is fitted between the two sets of transmission discs, so that the transmission roller that is driven to rotate counterclockwise can drive the other set of transmission rollers to rotate together through the transmission disc.

[0010] Preferably, the coating mechanism includes a pressure plate, with guide blocks fixedly installed at both ends of the pressure plate, so that the pressure plate is slidably installed in the U-shaped frame through the guide blocks on both sides, and the guide blocks sliding in the U-shaped frame are threaded through the threaded rod. The threaded rod is rotatably installed in the U-shaped frame, and the pressure plate is located at the upper end of the raw material and can slide and contact the upper surface of the raw material being driven by the transmission of the threaded rod.

[0011] Preferably, two sets of electric push rods are fixedly installed at one end of the storage cylinder, and a U-shaped scraper is fixedly installed at one end of the piston rod of the two sets of electric push rods. The top scraper of the U-shaped scraper is located at the lower end of the raw material and is perpendicular to the pressure plate. The U-shaped scraper slides on one end of the inner wall of the storage cylinder and can reintroduce the scraped antistatic coating into the storage cylinder through the groove at one end.

[0012] Compared with the prior art, the beneficial effects of this utility model are: By designing the pressure plate and the U-shaped scraper in a vertically opposite manner and with a flexible adjustment structure, the pressure plate ensures that the raw material roll maintains a uniform shape during transport by flattening and limiting the pressure plate. This provides a stable foundation for the U-shaped scraper to accurately scrape off excess coating from the lower surface, achieving a uniform thickness of the antistatic layer. Furthermore, the groove design of the U-shaped scraper allows the scraped excess coating to flow back to the storage cylinder for recycling. This ensures the quality stability of the composite film's antistatic layer while effectively reducing coating waste and lowering raw material costs, achieving a dual optimization of "quality control" and "cost saving." Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the transmission roller and coating roller of this utility model; Figure 3 This is a schematic diagram of the structure of the pressure plate and the U-shaped scraper of this utility model; Figure 4 This is a schematic diagram of the coating mechanism of this utility model.

[0014] In the diagram: 1. Coating roller; 101. Drive roller; 102. Drive disc; 103. First motor; 104. Storage cylinder; 105. U-shaped frame; 106. Threaded rod; 107. Second motor; 108. Coating machine housing; 2. Scraping mechanism; 201. Electric push rod; 202. U-shaped scraper; 203. Pressure plate; 204. Guide block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figures 1-2As shown, a composite film production device with an antistatic layer uniform coating adjustment mechanism includes: a coating machine housing 108, in which a set of coating rollers 1 and two sets of drive rollers 101 are rotatably installed. The two sets of drive rollers 101 are distributed on both sides of the coating rollers 1, so that the raw material roll passes through the lower side of the outer surface of the first set of drive rollers 101 and then passes through the upper side of the outer surface of the coating rollers 1 and the other set of drive rollers 101 in sequence. Two sets of U-shaped frames 105 are fixedly installed on the upper surface of one end of the coating machine housing 108, and a scraping mechanism 2 is slidably installed in the two sets of U-shaped frames 105.

[0017] A storage cylinder 104 is fixedly installed at the lower end of the coating machine housing 108. The storage cylinder 104 is perpendicular to the coating roller 1, and the lower half of the outer surface of the coating roller 1 is submerged in the storage cylinder 104. A first motor 103 and a second motor 107 are fixedly installed at one end of the coating machine housing 108. The output shaft of the first motor 103 passes through the coating machine housing 108 and is fixedly connected to the coating roller 1. The output shaft of the second motor 107 passes through the coating machine housing 108 and is fixedly connected to one of the drive rollers 101. This allows the first motor 103 and the second motor 107 to drive the coating roller 1 and one of the drive rollers 101 to rotate clockwise and counterclockwise, respectively.

[0018] In this configuration, a transmission disc 102 is fixedly installed at one end of each of the two sets of transmission rollers 101, and a synchronous belt is fitted between the two sets of transmission discs 102, so that the transmission roller 101 that is driven to rotate counterclockwise can drive the other set of transmission rollers 101 to rotate together through the transmission disc 102.

[0019] Through the design of the coating roller 1, transmission roller 101, first motor 103, second motor 107, storage cylinder 104, and scraping mechanism 2, after the device is started, the first motor 103 and the second motor 107 operate synchronously. The first motor 103 drives the coating roller 1 to rotate clockwise. Since the lower half of the outer surface of the coating roller 1 is submerged in the storage cylinder 104 fixed at the lower end of the coating machine housing 108, as the coating roller 1 rotates clockwise, its outer surface will evenly absorb the antistatic coating from the storage cylinder 104. Simultaneously, the second... Motor 107 drives a set of transmission rollers 101 fixedly connected to it to rotate counterclockwise. Since one end of each set of transmission rollers 101 is fixed with a transmission disc 102 and a synchronous belt is fitted between the two sets of transmission discs 102, under the transmission action of the synchronous belt, the transmission rollers 101 driven by the second motor 107 will drive the other set of transmission rollers 101 to rotate counterclockwise synchronously. At this time, the composite film raw material roll is passed through the lower side of the outer surface of one set of transmission rollers 101 and then through the upper side of the outer surface of the coating roller 1 and the other set of transmission rollers 101 in sequence. During the process of contact between the raw material roll and the outer surface of the coating roller 1, the antistatic coating adsorbed on the outer surface of the coating roller 1 is evenly transferred to the surface of the raw material roll, completing the initial coating. Subsequently, the raw material roll, after the initial coating, continues to move under the conveying of the transmission roller 101 and passes through the scraping mechanism 2. The scraping mechanism 2 can then scrape off the excess antistatic coating on the lower surface of the raw material roll, so that a uniform antistatic layer is formed on the surface of the raw material roll, and finally the coating process of the composite film antistatic layer is completed. The processed composite film can then be conveyed to the next step by the transmission roller 101 and enter the subsequent production process. In the coating process, the initial coating of the raw material roll surface is first completed by the coating roller 1 to ensure that the coating evenly covers the substrate surface. Then, the scraping mechanism 2 is used to specifically scrape off the excess coating on the lower surface. This "coating first, then finishing" mode can effectively avoid the problem of uneven thickness caused by coating accumulation on the lower surface of the raw material roll, so that the thickness error of the final antistatic layer is smaller and the performance consistency of the antistatic layer is guaranteed. It is especially suitable for scenarios with high coating precision requirements, such as electronic protection.

[0020] like Figures 3-4 As shown, the coating mechanism 2 includes a pressure plate 203, with guide blocks 204 fixedly installed at both ends of the pressure plate 203. This allows the pressure plate 203 to slide within the U-shaped frame 105 via the guide blocks 204 on both sides. The guide blocks 204 sliding within the U-shaped frame 105 are threaded through the threaded rod 106. The threaded rod 106 is rotatably installed within the U-shaped frame 105. The pressure plate 203 is located at the upper end of the raw material and can slide against the upper surface of the raw material through the transmission of the threaded rod 106.

[0021] Two sets of electric push rods 201 are fixedly installed at one end of the storage cylinder 104. A U-shaped scraper 202 is fixedly installed at one end of the piston rod of the two sets of electric push rods 201. The top scraper head of the U-shaped scraper 202 is located at the lower end of the raw material and is perpendicular to the pressure plate 203. The U-shaped scraper 202 slides on one end of the inner wall of the storage cylinder 104 and can reintroduce the scraped antistatic coating into the storage cylinder 104 through the groove at one end.

[0022] Through the design of the electric push rod 201, U-shaped scraper 202, counterweight plate 203, and guide block 204, when the composite film raw material roll has completed the initial coating by the coating roller 1 and is conveyed to the scraping mechanism 2 area by the transmission roller 101, the operator can, according to the thickness of the raw material roll and the thickness requirements of the target antistatic layer, first rotate the threaded rod 106 installed in the U-shaped frame 105. Since the guide block 204, which is slidably installed in the U-shaped frame 105, is threaded through the threaded rod 106, and the guide block 204 is fixedly connected to both ends of the counterweight plate 203, the rotation of the threaded rod 106... This causes the guide block 204 to slide up and down within the U-shaped frame 105, which in turn causes the pressure plate 203 to move up and down synchronously until the pressure plate 203 is adjusted to a position that matches the upper surface of the raw material roll. This allows the pressure plate 203 to maintain a sliding contact with the upper surface of the raw material roll that is continuously driven by the drive roller 101. In this way, the pressure plate 203 can flatten and limit the upper surface of the raw material roll, ensuring that the raw material roll maintains a uniform shape during its transport to this section. At the same time, the two sets of electric push rods 201 fixedly installed at one end of the storage cylinder 104 are activated. The movement of the electric push rods 201... The piston rod extends and retracts according to actual coating requirements. Since one end of the piston rod is fixedly connected to the U-shaped scraper 202, the extension and retraction of the piston rod will cause the U-shaped scraper 202 to slide on one end of the inner wall of the storage cylinder 104 until the top scraper head of the U-shaped scraper 202 is adjusted to the required thickness spacing of the electrostatic coating, and then it stops. This allows the U-shaped scraper 202 to scrape off excess antistatic coating from the underside of the raw material roll, ensuring a uniform thickness of the antistatic layer on the underside of the raw material roll. The scraped-off antistatic coating will flow back into the storage cylinder 104 through the groove at one end of the U-shaped scraper 202. To achieve the recycling and reuse of coatings, the design of the pressure plate 203 and the U-shaped scraper 202 being perpendicular to each other ensures that the raw material roll is pressed by the pressure plate 203 to maintain a uniform shape. This guarantees the flatness and thickness consistency of the antistatic layer after being scraped by the U-shaped scraper 202. Furthermore, the electric push rod 201 can flexibly adjust the scraping force and position of the U-shaped scraper 202 to adapt to the scraping requirements of raw material rolls with different thicknesses. Ultimately, the composite film raw material roll after scraping treatment forms an antistatic layer with uniform thickness and stable performance, which is then conveyed to the subsequent production stage by the transmission roller 101.

[0023] Based on the above technical solution, the working steps of this solution are summarized as follows: After the device is started, the first motor 103 and the second motor 107 operate synchronously. The first motor 103 drives the coating roller 1 to rotate clockwise. Since the lower half of the outer surface of the coating roller 1 is submerged in the storage cylinder 104 fixed at the lower end of the coating machine housing 108, as the coating roller 1 rotates clockwise, its outer surface will be evenly coated with the antistatic coating in the storage cylinder 104. At the same time, the second motor 107 drives a set of transmission rollers 101 fixedly connected to it to rotate counterclockwise. Since one end of each set of transmission rollers 101 is fixed with a transmission disc 102 and a synchronous belt is fitted between the two sets of transmission discs 102, the transmission rollers 101 driven by the second motor 107 rotate counterclockwise under the transmission action of the synchronous belt. 1 will drive another set of drive rollers 101 to rotate counterclockwise synchronously. At this time, the composite film raw material roll passes through the lower side of the outer surface of one set of drive rollers 101 and then passes through the upper side of the outer surface of coating roller 1 and the other set of drive rollers 101 in sequence. During the contact between the raw material roll and the outer surface of coating roller 1, the antistatic coating dipped on the outer surface of coating roller 1 will be evenly transferred to the surface of the raw material roll, completing the initial coating. Subsequently, the operator can, according to the thickness of the raw material roll and the thickness requirements of the target antistatic layer, first rotate the threaded rod 106 installed in the U-shaped frame 105. Since the guide block 204, which is slidably installed in the U-shaped frame 105, is threaded through by the threaded rod 106, and the guide block 204 is fixedly connected to both ends of the pressure plate 203, the threaded rod 106... Rotation causes the guide block 204 to slide up and down within the U-shaped frame 105, which in turn causes the pressure plate 203 to move up and down synchronously until the pressure plate 203 is adjusted to a position that matches the upper surface of the raw material roll. This allows the pressure plate 203 to maintain a sliding contact with the upper surface of the raw material roll continuously driven by the drive roller 101. In this way, the pressure plate 203 can flatten and limit the upper surface of the raw material roll, ensuring that the raw material roll maintains a uniform shape during this process. At the same time, the two sets of electric push rods 201 fixedly installed at one end of the storage cylinder 104 are activated. The piston rods of the electric push rods 201 will extend and retract according to the actual coating requirements. Since one end of the piston rod is fixedly connected to the U-shaped scraper 202, the extension and retraction of the piston rod will cause the U-shaped scraper 202 to move within the storage cylinder 104. The scraper slides along one end of the inner wall until the top scraper head of the U-shaped scraper 202 is adjusted to the required thickness spacing of the electrostatic coating. This allows the U-shaped scraper 202 to scrape off excess antistatic coating from the lower surface of the raw material roll, ensuring a uniform thickness of the antistatic layer. The scraped antistatic coating flows back into the storage cylinder 104 through the groove at one end of the U-shaped scraper 202, achieving coating recycling. During this process, the perpendicular design of the pressure plate 203 and the U-shaped scraper 202 ensures that the raw material roll, which is pressed against the pressure plate 203 to maintain a uniform shape, has a smooth and consistent antistatic layer after being scraped by the U-shaped scraper 202. The scraped coating can then be conveyed to the subsequent production stage by the transmission roller 101. In summary: The height of the pressure plate 203 can be adjusted by threaded rod 106 according to the thickness of the raw material roll and the target antistatic layer thickness, so that it slides and contacts the upper surface of the raw material roll to maintain the uniform shape of the raw material roll. At the same time, the spacing of the U-shaped scraper 202 can be adjusted by electric push rod 201 to accurately scrape off excess coating from the lower surface of the raw material roll. This allows the antistatic layer thickness to be controlled as needed, effectively avoiding problems such as coating that is too thick, too thin, or local accumulation. It ensures that the antistatic layer performance of different batches of composite film is stable and consistent, meeting the needs of high-precision scenarios such as electronic protection and food preservation.

[0024] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite film production apparatus with an antistatic layer uniform coating adjustment mechanism, characterized in that, include: The coating machine housing (108) contains a set of coating rollers (1) and two sets of drive rollers (101) which are rotatably installed inside. The two sets of drive rollers (101) are distributed on both sides of the coating rollers (1), so that the raw material roll passes through the lower side of the outer surface of the set of drive rollers (101) and then passes through the upper side of the outer surface of the coating rollers (1) and the other set of drive rollers (101) in sequence. Two sets of U-shaped frames (105) are fixedly installed on the upper surface of one end of the coating machine housing (108), and a scraping mechanism (2) is slidably installed inside the two sets of U-shaped frames (105).

2. The composite film production apparatus with an antistatic layer uniform coating adjustment mechanism according to claim 1, characterized in that: A storage cylinder (104) is fixedly installed at the lower end of the coating machine housing (108). The storage cylinder (104) is perpendicular to the coating roller (1), and the lower half of the outer surface of the coating roller (1) is submerged in the storage cylinder (104).

3. The composite film production apparatus with an antistatic layer uniform coating adjustment mechanism according to claim 1, characterized in that: A first motor (103) and a second motor (107) are fixedly installed at one end of the coating machine housing (108). The output shaft of the first motor (103) passes through the coating machine housing (108) and is fixedly connected to the coating roller (1). The output shaft of the second motor (107) passes through the coating machine housing (108) and is fixedly connected to one of the transmission rollers (101). This allows the first motor (103) and the second motor (107) to drive the coating roller (1) and one of the transmission rollers (101) to rotate clockwise and counterclockwise, respectively.

4. A composite film production apparatus with an antistatic layer uniform coating adjustment mechanism according to claim 3, characterized in that: One end of each of the two sets of transmission rollers (101) is fixedly mounted with a transmission disc (102), and a synchronous belt is fitted between the two sets of transmission discs (102) so that the transmission rollers (101) that are driven to rotate counterclockwise can drive the other set of transmission rollers (101) to rotate together through the transmission discs (102).

5. A composite film production apparatus with an antistatic layer uniform coating adjustment mechanism according to claim 2, characterized in that: The coating mechanism (2) includes a pressure plate (203), and guide blocks (204) are fixedly installed at both ends of the pressure plate (203), so that the pressure plate (203) is slidably installed in the U-shaped frame (105) through the guide blocks (204) on both sides. The guide blocks (204) sliding in the U-shaped frame (105) are threaded through the threaded rod (106). The threaded rod (106) is rotatably installed in the U-shaped frame (105). The pressure plate (203) is located at the upper end of the raw material and can slide and contact the upper surface of the raw material through the transmission of the threaded rod (106).

6. A composite film production apparatus with an antistatic layer uniform coating adjustment mechanism according to claim 5, characterized in that: Two sets of electric push rods (201) are fixedly installed at one end of the storage cylinder (104). A U-shaped scraper (202) is fixedly installed at one end of the piston rod of the two sets of electric push rods (201). The top scraper of the U-shaped scraper (202) is located at the lower end of the raw material and is perpendicular to the pressure plate (203). The U-shaped scraper (202) slides on one end of the inner wall of the storage cylinder (104) and can reintroduce the scraped antistatic coating into the storage cylinder (104) through the groove at one end.

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