A glue roller transmission structure of a decorative film casting machine

Abstract

The utility model relates to the technical field of decorative film production equipment discloses a rubber roll transmission structure of decorative film flow -casting machine, including the fixed frame, the fixed frame inner wall from top to bottom is sequentially provided with rubber roll and iron roll, the inside fixed connection of rubber roll has the pivot no.

Description

Technical Field

[0001] This utility model relates to the field of decorative film production equipment, and in particular to a rubber roller transmission structure for a decorative film casting machine. Background Technology

[0002] In the critical stages of decorative film production, the transfer structure of the casting machine plays an indispensable core role, serving as a crucial support for ensuring the smooth transformation of the film material from a molten state to a solid state. As an important material in the modern decoration field, decorative film, with its diverse colors and textures, excellent durability, and ease of processing, is widely used in home decoration, commercial space decoration, electronic device housings, and many other areas. With the continuous upgrading of market demands, increasingly higher standards are being set for the thickness consistency, surface smoothness, and physical property stability of decorative films. As the core component of the casting machine for achieving precise film material transfer, cooling, and shaping, the transfer structure's operational stability and performance directly affect the forming quality of the film material, and are one of the important factors determining the market competitiveness of decorative film products. Existing decorative film casting machines primarily employ a single-sided rigid cooling and conveying structure. Their core mechanical components include a drive unit, a single set of metal cooling rollers, transmission connectors, and a tension control device. The operating principle of this technology involves the drive unit rotating the metal cooling rollers at a uniform speed. Utilizing the high thermal conductivity of the metal rollers, the heat from the molten film is rapidly transferred to the air, allowing the film to gradually cool and solidify as it contacts the surface of the metal cooling rollers. Simultaneously, the tension control device adjusts the tension of the film during conveying, ensuring the film continuously and stably passes through the cooling zone. However, the existing single-sided metal cooling roller cooling method has significant shortcomings. Due to the high thermal conductivity of the metal roller, the film material is easily cooled too quickly and the cooling uniformity is poor, which in turn causes the film material thickness to fluctuate, seriously affecting the finished quality of the decorative film. To address this issue, a rubber roller transmission structure for a decorative film casting machine is proposed. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides a rubber roller transmission structure for a decorative film casting machine, which aims to improve the problems of film thickness fluctuation, surface defects and internal stress concentration caused by the excessively fast and uneven cooling speed of traditional single-sided iron rollers.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A roller conveying structure for a decorative film casting machine includes a fixed frame. A rubber roller and an iron roller are arranged sequentially from top to bottom on the inner wall of the fixed frame. A second rotating shaft is fixedly connected inside the rubber roller. A second positioning ring is fixedly connected to one end of the second rotating shaft. A first servo motor is fixedly connected to one side of the fixed frame. The output end of the first servo motor is fixedly connected to the other end of the second rotating shaft. A first rotating shaft is fixedly connected inside the iron roller. Both ends of the first rotating shaft are fixedly connected to first positioning rings. The second positioning ring and multiple first positioning rings are fitted against both sides of the fixed frame. A cleaning assembly is provided on the top of the rubber roller.

[0005] Preferably, the cleaning assembly includes a cleaning brush, which is combined with the outer wall of the rubber roller, and a support frame is fixedly connected to the top of the fixing frame.

[0006] The above technical solution achieves the effect of cleaning the surface of the rubber roller.

[0007] Preferably, the top of the support frame is fixedly connected to a plurality of fixing plates, and a slider is slidably connected between the plurality of fixing plates.

[0008] The above technical solution achieves the effect of limiting the movement direction of the skateboard.

[0009] Preferably, a servo motor 2 is fixedly connected inside the slider 1, and a connecting strip is fixedly connected to the output end of the servo motor 2.

[0010] The above technical solution achieves the effect of providing rotational power for the connecting strip.

[0011] Preferably, the top of the support frame has a connecting groove, and the connecting strip is slidably connected to the inner wall of the connecting groove.

[0012] The above technical solution achieves the effect of providing connection space between the connecting strip and the output end of the servo motor.

[0013] Preferably, a gear is fixedly connected to the outer wall of the connecting strip, and a rack and multiple fixing plates are fixedly connected to the inner wall of the support frame.

[0014] The above technical solution achieves the desired fixation of the rack.

[0015] Preferably, the gear and the rack mesh with each other, and a limit ring is fixedly connected to the outer wall of the connecting strip.

[0016] The above technical solution achieves the effect of absorbing the rotational force of the connecting strip.

[0017] Preferably, the connecting strip and the outer wall of the limiting ring are rotatably connected to a connecting shell, the bottom of the connecting shell is fixedly connected to a slider two, the slider two is slidably connected between multiple fixing plates two, and the bottom of the slider two is fixedly connected to the top of the cleaning brush.

[0018] The above technical solution achieves the effect of supporting the cleaning brush.

[0019] This utility model has the following beneficial effects: 1. In this utility model, by setting the upper rubber roller and the lower iron roller to work together to transport the film material, the molten film material is cooled differently, which effectively solves the problems of film material thickness fluctuation, surface defects and internal stress concentration caused by the excessively fast and uneven cooling speed of the traditional single-sided iron roller, and enhances the dimensional stability and surface flatness of the final product.

[0020] 2. In this utility model, by setting a cleaning brush driven by a servo motor to move back and forth, the surface of the rubber roller is automatically and efficiently cleaned, which solves the problem of dust and impurities being attracted by the rubber roller and contaminating the film material, thus affecting the product quality. By maintaining the cleanliness of the rubber roller surface, the yield and appearance quality of the product are improved. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the rubber roller transmission structure of a decorative film casting machine proposed in this utility model; Figure 2 This is a schematic diagram of the rotating shaft structure of the rubber roller transmission structure of a decorative film casting machine proposed in this utility model; Figure 3 This is a schematic diagram of the cleaning brush structure of the rubber roller transmission structure of a decorative film casting machine proposed in this utility model. Figure 4 This is an exploded view of the fixed plate of the rubber roller conveying structure of a decorative film casting machine proposed in this utility model. Figure 5 This is a schematic diagram of the limiting ring structure of the rubber roller transmission structure of a decorative film casting machine proposed in this utility model.

[0022] Legend: 1. Fixed frame; 2. Servo motor one; 3. Rubber roller; 4. Iron roller; 5. Rotating shaft one; 6. Positioning ring one; 7. Rotating shaft two; 8. Positioning ring two; 9. Support frame; 10. Fixed plate one; 11. Slider one; 12. Servo motor two; 13. Connecting groove; 14. Connecting strip; 15. Gear; 16. Rack; 17. Connecting shell; 18. Slider two; 19. Cleaning brush; 20. Fixed plate two; 21. Limiting ring. Detailed Implementation

[0023] 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.

[0024] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a rubber roller transmission structure for a decorative film casting machine, comprising a fixed frame 1, wherein a rubber roller 3 and an iron roller 4 are arranged sequentially from top to bottom on the inner wall of the fixed frame 1, wherein the rubber roller 3 cooperates with the iron roller 4 below to clamp and transmit the molten film material, achieving the effect of differentiated cooling and uniform forming; a rotating shaft 7 is fixedly connected inside the rubber roller 3, which is used to accurately transmit power to the rubber roller 3; a positioning ring 8 is fixedly connected to one end of the rotating shaft 7; and a servo motor 2 is fixedly connected to one side of the fixed frame 1, which is used to provide the active power source to drive the entire film material transmission process and is the core power component to ensure continuous production; The output end of the servo motor 2 is fixedly connected to the other end of the rotating shaft 7. The rotating shaft 5 is fixedly connected inside the iron roller 4. The rotating shaft 5 is used to support the iron roller 4 and enable it to rotate freely and synchronously with the friction of the film material. Positioning rings 6 are fixedly connected to both ends of the rotating shaft 5. The positioning rings 8 and multiple positioning rings 6 are used to axially limit the rotating shaft by fitting against both sides of the fixed frame 1, preventing the rubber roller 3 and the iron roller 4 from moving during operation and enhancing the stability of the transmission. A cleaning component is provided on the top of the rubber roller 3. This cleaning component is used to automatically clean the surface of the rubber roller 3 after production, solving the problem of electrostatic adsorption of dust.

[0025] Reference Figures 2-5 The cleaning assembly includes a cleaning brush 19, which is used to directly contact and sweep away dust and impurities on the surface of the rubber roller 3. It is a key component for achieving physical cleaning. The cleaning brush 19 is combined with the outer wall of the rubber roller 3. A support frame 9 is fixedly connected to the top of the mounting frame 1. The support frame 9 is used to support the upper drive mechanism of the entire cleaning assembly, providing a solid mounting platform for the servo motor 12 and related transmission components, and ensuring the accuracy of the cleaning action. Multiple fixed plates 10 are fixedly connected to the top of the support frame 9. A slider 11 is slidably connected between the multiple fixed plates 10. The slider 11 slides with the multiple fixed plates 10, providing guidance for the lateral movement of the servo motor 12 and its connecting parts, achieving a smooth and jam-free movement. The servo motor 12 is fixedly connected inside the slider 11. The servo motor 12 is used to provide precise rotational power. Its precise speed and direction control is the core of realizing the automated reciprocating motion of the cleaning brush 19, ensuring the full coverage of the cleaning range. A connecting strip 14 is fixedly connected to the output end of the servo motor 12. The connecting strip 14 is used to transmit the rotational motion of the servo motor 12 to the subsequent gear 15 for transmission. The top of the support frame 9 is provided with a connecting groove 13, which is used to guide and limit the lateral movement of the connecting bar 14, ensuring the straightness of its movement trajectory. The connecting bar 14 is slidably connected to the inner wall of the connecting groove 13. A gear 15 is fixedly connected to the outer wall of the connecting bar 14. A rack 16 and multiple fixing plates 20 are fixedly connected to the inner wall of the support frame 9. The gear 15 meshes with the fixed rack 16 to transmit power, efficiently converting its own rotational motion into linear displacement along the rack 16, thereby achieving the effect of driving the entire cleaning assembly to move laterally. A limiting ring 21 is fixedly connected to the outer wall of the connecting strip 14. A connecting shell 17 is rotatably connected to the outer walls of the connecting strip 14 and the limiting ring 21. The connecting strip 14 and the limiting ring 21 can rotate freely inside the connecting shell 17, which achieves the effect of decoupling the rotational motion of the connecting strip 14 from the linear motion of the connecting shell 17. This prevents the rotational force of the servo motor 12 from being directly transmitted to the cleaning brush 19. The connecting shell 17 is used to connect the lower slider 18 and the cleaning brush 19. The slider 18 is fixedly connected to the bottom of the connecting shell 17. The slider 18 slides with multiple fixing plates 20, providing a stable and smooth moving track for the cleaning brush 19. This ensures that the cleaning brush 19 always maintains a suitable distance and pressure from the rubber roller 3 during reciprocating motion, enhancing the uniformity of the cleaning effect. The bottom of the slider 18 is fixedly connected to the top of the cleaning brush 19.

[0026] Working Principle: During equipment operation, servo motor 2 is started, and its output drives the rubber roller 3 to rotate. When the molten film enters from the feed port and is clamped by the rollers, it begins to be transported at a uniform speed. The friction between the film and the surface of the iron roller 4 drives the roller 4 to rotate synchronously. The high thermal conductivity of the iron roller 4 rapidly cools one side of the film, while the lower thermal conductivity of the rubber roller 3 slows down the cooling rate of the other side during transport. This differentiated cooling process provides sufficient time for the release and uniform distribution of internal stress in the film, ultimately achieving uniform film forming. This solves the key problems of film thickness fluctuation, surface defects, and internal stress concentration caused by the excessively rapid and uneven cooling of the traditional single-sided iron roller 4, enhancing the dimensional stability and surface flatness of the final product. After the equipment is running, the rubber roller 3 needs to be cleaned. This is because the rubber roller 3 is usually made of insulating or semi-insulating materials, and the static electricity generated during friction with the film material is difficult to release, forming a continuous electrostatic field, which actively adsorbs charged dust and impurities suspended in the air. In contrast, the iron roller 4, as an excellent metal conductor, can quickly release the static charge generated by friction and is not prone to charge accumulation. In the process of removing contaminants from the surface of the rubber roller 3, the servo motor 12 first drives the rubber roller 3 to keep it rotating. Then, the servo motor 12 installed on the top of the support frame 9 starts, and its output drives the connecting bar 14 to rotate. The gear 15 fixed on the outer wall of the connecting bar 14 meshes with the rack 16 fixed on the inner wall of the support frame 9, and its own rotational motion is converted into linear movement along the rack 16. This linear movement force is guided by the sliding of the slider 11 between the fixed plates 10 and the slider 18 between the fixed plates 20, driving the cleaning brush 19 at the bottom to move smoothly back and forth along the axial direction of the rubber roller 3. To prevent the rotational force of the servo motor 12 from being directly transmitted to the cleaning brush 19, causing it to rotate as well, the connecting strip 14 rotates freely inside the connecting shell 17 via the limiting ring 21 on it, decoupling the rotational motion from the linear motion. This ensures that the cleaning brush 19 only performs linear reciprocating motion. By having the cleaning brush 19 perform reciprocating brushing on the surface of the rotating rubber roller 3, the attached dust and impurities can be thoroughly removed efficiently. This automated cleaning function achieves the function of maintaining the rubber roller 3, solving the potential problem of contamination of the rubber roller 3 due to electrostatic adsorption, which in turn affects product quality, and ensuring the yield and appearance quality of subsequent batches of decorative film.

Claims

1. A roller conveying structure for a decorative film casting machine, comprising a fixed frame (1), characterized in that: The inner wall of the fixed frame (1) is provided with a rubber roller (3) and an iron roller (4) from top to bottom. The rubber roller (3) is fixedly connected to a rotating shaft (7). One end of the rotating shaft (7) is fixedly connected to a positioning ring (8). One side of the fixed frame (1) is fixedly connected to a servo motor (2). The output end of the servo motor (2) is fixedly connected to the other end of the rotating shaft (7). The iron roller (4) is fixedly connected to a rotating shaft (5). Both ends of the rotating shaft (5) are fixedly connected to positioning rings (6). The positioning rings (8) and multiple positioning rings (6) are attached to both sides of the fixed frame (1). A cleaning component is provided on the top of the rubber roller (3).

2. The roller conveying structure of a decorative film casting machine according to claim 1, characterized in that: The cleaning assembly includes a cleaning brush (19) which is combined with the outer wall of the rubber roller (3), and a support frame (9) is fixedly connected to the top of the fixing frame (1).

3. The roller conveying structure of a decorative film casting machine according to claim 2, characterized in that: The top of the support frame (9) is fixedly connected to multiple fixing plates (10), and sliders (11) are slidably connected between the multiple fixing plates (10).

4. The roller conveying structure of a decorative film casting machine according to claim 3, characterized in that: The slider one (11) is fixedly connected to the servo motor two (12), and the output end of the servo motor two (12) is fixedly connected to the connecting strip (14).

5. The roller conveying structure of a decorative film casting machine according to claim 4, characterized in that: The support frame (9) has a connecting groove (13) at the top, and the connecting strip (14) is slidably connected to the inner wall of the connecting groove (13).

6. The roller conveying structure of a decorative film casting machine according to claim 5, characterized in that: The outer wall of the connecting strip (14) is fixedly connected with a gear (15), and the inner wall of the support frame (9) is fixedly connected with a rack (16) and multiple fixing plates (20).

7. The roller conveying structure of a decorative film casting machine according to claim 6, characterized in that: The gear (15) meshes with the rack (16), and a limit ring (21) is fixedly connected to the outer wall of the connecting strip (14).

8. The roller conveying structure of a decorative film casting machine according to claim 7, characterized in that: The connecting strip (14) and the outer wall of the limiting ring (21) are rotatably connected to a connecting shell (17). The bottom of the connecting shell (17) is fixedly connected to a slider two (18). The slider two (18) is slidably connected between multiple fixed plates two (20). The bottom of the slider two (18) is fixedly connected to the top of the cleaning brush (19).

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