A modular combined PVC calendered transparent film powder coating device

Abstract

This utility model belongs to the field of powder spreading equipment, and particularly relates to a modular combined PVC calendered transparent film powder spreading device. This utility model provides a modular combined PVC calendered transparent film powder spreading device, including a powder spreading roller rotatably connected to the inner side of a frame for applying anti-sticking powder to the surface of the PVC calendered transparent film; a powder storage box is mounted on the top of the frame via a mounting bracket, and an adjusting plate is symmetrically slidably connected to the inner cavity of the powder storage box. The bottom end of the powder storage box is open, and the edge of the opening and the bottom end of the adjusting plate are movably fitted to the outer side of the powder spreading roller. Through the cooperation of the adjusting plate and the drive assembly, the effective width of the powder supply from the powder storage box and the powder spreading width of the powder spreading roller can be adjusted synchronously without replacing the entire powder spreading roller, adapting to different film width requirements. Simultaneously, a limiting plate is used to achieve lateral limiting of the film, preventing film displacement from affecting the powder spreading effect, effectively solving the production interruption problem caused by replacing the roller in traditional devices, and ensuring production continuity.

Description

Technical Field

[0001] This utility model belongs to the field of powder spreading equipment, and in particular relates to a modular combination PVC calendered transparent film powder spreading device. Background Technology

[0002] In the production process of PVC calendered transparent film, the modular powder application device is a key piece of equipment for preventing film adhesion. The powder application roller, as the core actuator, must have its effective powder application range precisely matched to the width of the film to be processed to ensure uniform powder coverage and prevent film edge adhesion or powder waste. In actual production, due to varying order requirements, it is often necessary to switch between different widths of PVC transparent film products. This requires adjusting the powder application width of the powder application roller to adapt to the new production specifications. However, existing modular powder application devices often use powder application rollers with fixed widths. When the film width changes, the original powder application roller must be completely disassembled from the device's transmission mechanism, support bearings, and other components before being replaced with a dedicated powder application roller adapted to the new film width. This entire replacement process not only requires halting the production line but also necessitates recalibrating the installation position and concentricity parameters of the new roller. The operation is cumbersome and time-consuming, further impacting production continuity and switching efficiency, making it difficult to meet the actual needs of flexibly adjusting production specifications. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned technical problems by providing a modular, combined PVC calendered transparent film powder-spreading device. Through the cooperation of the adjusting plate and the drive assembly, the effective width of the powder supply box and the powder distribution width of the powder spreading roller can be adjusted synchronously without the need to completely replace the powder spreading roller, thus adapting to different film width requirements. At the same time, the limiting plate is used to achieve lateral limiting of the film, preventing film deviation from affecting the powder distribution effect. This effectively solves the production interruption problem caused by replacing the roller body in traditional devices, ensuring production continuity.

[0004] In view of this, the present invention provides a modular combined PVC calendered transparent film powdering device, including a powdering roller rotatably connected to the inner side of a frame for applying anti-sticking powder to the surface of the PVC calendered transparent film; a powder storage box is mounted on the top of the frame via a mounting bracket, and adjusting plates are symmetrically slidably connected to the inner cavity of the powder storage box; the bottom end of the powder storage box is open, and the edge of the opening and the bottom end of the adjusting plates are movably fitted to the outer side of the powdering roller; a cover plate is fixedly connected to the top of each of the two adjusting plates; and a powder storage box is mounted on one side of the frame. The device includes a drive assembly with two symmetrically mounted limiting plates. The opposing ends of the two limiting plates correspond one-to-one with the opposing ends of the two adjusting plates. The opposing ends of each limiting plate and the opposing ends of the corresponding adjusting plates are coplanar in the same vertical plane. A fixing frame is fixedly connected between the two limiting plates and the corresponding cover plates to synchronously drive the two cover plates to move synchronously, so as to make the width of the powder-spreading roller match the width of the film. At the same time, the limiting plates limit the two sides of the PVC calendered transparent film to achieve the limiting of the film.

[0005] In this technical solution, by cooperating with the adjustment plate and the drive assembly, the effective width of the powder supply box and the powder distribution width of the powder roller can be adjusted synchronously without replacing the entire powder dispensing roller, adapting to different film width requirements. At the same time, the limiting plate is used to achieve lateral limiting of the film, avoiding film displacement that affects the powder distribution effect, effectively solving the production interruption problem caused by replacing the roller body in traditional devices, and ensuring production continuity.

[0006] Furthermore, the drive assembly includes a bidirectional lead screw rotatably connected to the inner side of the frame on one side of the powder-spreading roller, and two limiting plates symmetrically threaded onto the outer side of the bidirectional lead screw, with the tops of the two limiting plates movably attached to the outer side of the powder-spreading roller.

[0007] In this technical solution, the two limit plates can be driven to move synchronously towards or away from each other by using a bidirectional lead screw in the drive component, ensuring that the adjustment plate and the limit plate move synchronously.

[0008] Furthermore, the drive assembly includes a slide rod fixedly connected to the inner side of the frame on the side away from the bidirectional lead screw, and two limiting plates symmetrically slidingly sleeved on the outer side of the slide rod, wherein the slide rod and the bidirectional lead screw are at the same height.

[0009] In this technical solution, the sliding rod and the bidirectional lead screw work together to limit the rotation of the limiting plate, prevent the limiting plate from shifting during movement, ensure smooth sliding of the adjusting plate and accurate positioning of the limiting plate on the film, and prevent uneven powder distribution or film deviation caused by component misalignment.

[0010] Furthermore, both sides of the two limiting plates are fitted with telescopic bellows, and the inner diameter of the telescopic bellows is larger than the outer diameter of the two-way lead screw.

[0011] In this technical solution, the telescopic bellows can isolate the powder from contact with the bidirectional lead screw, preventing the powder from adhering to the lead screw surface and causing jamming or wear, reducing the frequency of lead screw maintenance, and extending the service life of the drive components.

[0012] Furthermore, one end of the bidirectional lead screw rotates through the frame, and a handwheel is fixedly connected to the bidirectional lead screw on the outside of the frame.

[0013] In this technical solution, the handwheel allows for easy hand-holding, enabling manual rotation of the lead screw without the need for special tools.

[0014] Furthermore, a sealing gasket is fixedly connected to the outside of the adjusting plate to ensure the sealing of the connection between the adjusting plate and the inner wall of the powder storage box and to prevent powder leakage. The sealing gasket is made of silicone material.

[0015] In this technical solution, the silicone sealing gasket on the outside of the adjusting plate can fill the gap between the adjusting plate and the inner wall of the powder storage box, preventing powder from leaking out of the gap and avoiding powder waste and device contamination.

[0016] The beneficial effects of this utility model are: by cooperating with the adjustment plate and the drive assembly, this utility model can simultaneously adjust the effective width of the powder supply box and the powder distribution width of the powder distribution roller without replacing the entire powder dispensing roller, adapting to different film width requirements. At the same time, the limiting plate is used to achieve lateral limiting of the film, avoiding film displacement that affects the powder distribution effect, effectively solving the production interruption problem caused by replacing the roller body in traditional devices, and ensuring production continuity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the connection structure between the powder storage box and the adjusting plate of this utility model. In the figure: 1. Frame; 2. Powder spreading roller; 3. Powder storage box; 4. Adjusting plate; 5. Cover plate; 6. Fixing frame; 7. Two-way lead screw; 8. Limiting plate; 9. Handwheel; 10. Telescopic corrugated pipe; 11. Slide rod; 12. Sealing gasket. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0020] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0023] Example 1: like Figure 1-3 As shown, this utility model provides a modular combined PVC calendered transparent film powdering device, including a powdering roller 2 rotatably connected to the inner side of a frame 1 for applying anti-sticking powder to the surface of the PVC calendered transparent film; a powder storage box 3 is mounted on the top of the frame 1 via a mounting bracket, and adjusting plates 4 are symmetrically slidably connected to the inner cavity of the powder storage box 3. The bottom end of the powder storage box 3 is open, and the edge of its opening and the bottom end of the adjusting plates 4 are movably fitted to the outer side of the powdering roller 2. A cover plate 5 is fixedly connected to the top of each of the two adjusting plates 4. A [missing information - likely a device or component] is mounted on one side of the frame 1. The driving assembly includes two symmetrically mounted limiting plates 8. The opposing ends of the two limiting plates 8 correspond one-to-one with the opposing ends of the two adjusting plates 4. The opposing ends of each limiting plate 8 and the opposing ends of the corresponding adjusting plates 4 are coplanar in the same vertical plane. A fixing frame 6 is fixedly connected between the two limiting plates 8 and the corresponding cover plates 5 to synchronously drive the two cover plates 5 to move synchronously, so that the width of the powder-spreading roller 2 matches the width of the film. At the same time, the limiting plates 8 limit the film on both sides of the PVC calendered transparent film to achieve film positioning.

[0024] During operation, the drive component outputs power to move the two limit plates 8 synchronously. The limit plates 8 then transmit power to the cover plate 5 through the fixing frame 6, causing the cover plate 5 to move the adjusting plate 4 along the axial direction of the powder spreading roller 2 within the inner cavity of the powder storage box 3. Since the bottom opening edge of the powder storage box 3 and the bottom of the adjusting plate 4 are both in contact with the outer side of the powder spreading roller 2, the sliding of the adjusting plate 4 changes the effective area of ​​powder delivery from the powder storage box 3 to the powder spreading roller 2, allowing the powder spreading roller 2 to only adhere to the corresponding area. This achieves the matching of powder distribution width and film width, eliminating the need for disassembly and replacement as required by traditional devices. The powder-spreading roller 2; at the same time, the limiting plate 8 moves synchronously on both sides of the film, and the limiting range defined by its opposing ends corresponds completely with the powder supply boundary, ensuring that the edge of the film and the powder-spreading roller 2 accurately match the powder-spreading edge. Thus, the limiting plate 8 will always be on both sides of the PVC calendered transparent film during the movement, forming a lateral limit on the film's conveying path, preventing the film from shifting during conveying and causing powder misalignment. This not only avoids the production stoppage caused by the traditional replacement of rollers, but also solves the problem of film shift affecting powder-spreading quality, effectively ensuring production continuity and powder-spreading accuracy.

[0025] The drive assembly includes a bidirectional lead screw 7 rotatably connected to the inner side of the frame 1 on one side of the powder spreading roller 2, and two limiting plates 8 symmetrically threaded on the outer side of the bidirectional lead screw 7, with the tops of the two limiting plates 8 movably attached to the outer side of the powder spreading roller 2.

[0026] When the bidirectional lead screw 7 rotates, the symmetrically arranged threads on the surface of the bidirectional lead screw 7 mesh with the internal threads of the limiting plate 8. The two limiting plates 8 will move synchronously towards or away from each other under the force of the threads, and the top of the limiting plate 8 will be in contact with the outer side of the powder spreading roller 2. During the movement, the limiting plate 8 will always maintain a stable posture with the powder spreading roller 2 as the reference. Then, the fixing frame 6 will drive the adjusting plate 4 to slide synchronously, ensuring that the powder supply width of the powder storage box 3 is always matched with the limiting range of the limiting plate 8. Through the synchronous transmission characteristics of the bidirectional lead screw 7, it is not necessary to adjust the positions of the two limiting plates 8 and the adjusting plate 4 separately, avoiding the tedious operation of repeated calibration. It can quickly achieve film width adaptation, significantly improve adjustment efficiency and adaptation accuracy, and reduce the time for production downtime adjustment.

[0027] The drive assembly includes a slide rod 11 fixedly connected to the inner side of the frame 1 on the side away from the bidirectional lead screw 7, and two limiting plates 8 symmetrically slidingly sleeved on the outer side of the slide rod 11, wherein the slide rod 11 and the bidirectional lead screw 7 are at the same height.

[0028] During operation, as the bidirectional lead screw 7 drives the limiting plate 8 to move, the limiting plate 8 is simultaneously sleeved on the outside of the slide rod 11. The slide rod 11 forms a radial constraint on the limiting plate 8, preventing the limiting plate 8 from circumferentially deflecting due to the rotation of the bidirectional lead screw 7. This ensures that the limiting plate 8 moves smoothly only along the axial direction of the lead screw and the slide rod 11. Since the slide rod 11 and the bidirectional lead screw 7 are at the same height, the limiting plate 8 always maintains a horizontal posture during movement, thereby driving the adjusting plate 4 to slide smoothly in the inner cavity of the powder storage box 3. This avoids the adjusting plate 4 tilting, which could lead to uneven powder supply gaps, further ensuring production continuity and product quality.

[0029] Both sides of the two limiting plates 8 are fitted with telescopic bellows 10, and the inner diameter of the telescopic bellows 10 is larger than the outer diameter of the two-way lead screw 7.

[0030] When the bidirectional lead screw 7 drives the limiting plate 8 to move, the telescopic bellows 10 on both sides of the limiting plate 8 will extend and retract synchronously with the movement of the limiting plate 8, always keeping the threaded part of the bidirectional lead screw 7 inside the bellows. Since the inner diameter of the bellows is larger than the outer diameter of the lead screw, it does not affect the rotation of the lead screw and the movement of the limiting plate 8, and can also isolate the external anti-sticking powder from contacting the lead screw thread, avoiding the powder adhering in the thread gap and causing the lead screw to jam or wear.

[0031] One end of the bidirectional lead screw 7 rotates through the frame 1, and a handwheel 9 is fixedly connected to the bidirectional lead screw 7 on the outside of the frame 1.

[0032] During operation, the operator can directly drive the bidirectional lead screw 7 to rotate around its own axis by turning the handwheel 9 on the outer side of the frame 1. The bidirectional lead screw 7 can be driven to rotate without the need for special tools. The handwheel 9 can then be used to achieve convenient manual adjustment, which simplifies the operation process. The operator can quickly start the adjustment process according to the production needs without waiting for tool preparation or professional operation, which greatly shortens the time spent on film width switching, reduces production downtime, and further improves production flexibility and efficiency.

[0033] A sealing gasket 12 is fixedly connected to the outside of the adjusting plate 4 to ensure the sealing of the connection between the adjusting plate 4 and the inner wall of the powder storage box 3 and to prevent powder leakage. The sealing gasket 12 is made of silicone material.

[0034] When the adjusting plate 4 slides within the powder storage box 3, the silicone sealing gasket 12 on the outer side of the adjusting plate 4 remains tightly fitted to the inner wall of the powder storage box 3. Due to the excellent elasticity and sealing properties of silicone, it fills the gap between the adjusting plate 4 and the inner wall of the powder storage box 3, preventing the anti-sticking powder inside the powder storage box 3 from leaking out of the gap. Thus, the sealing effect of the sealing gasket 12 solves the powder leakage problem, ensuring a stable powder supply from the powder storage box 3, resulting in uniform powder application to the powder spreading roller 2, and improving the powder distribution quality of the PVC calendered transparent film. The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many other forms without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. A modular combination PVC calendered transparent film duster, characterized in that, The system includes a powder-spreading roller (2) rotatably connected to the inside of the frame (1) for applying anti-sticking powder to the surface of the PVC calendered transparent film; a powder storage box (3) is mounted on the top of the frame (1) via a mounting bracket, and an adjusting plate (4) is symmetrically slidably connected to the inner cavity of the powder storage box (3). The bottom end of the powder storage box (3) is open, and the edge of its opening and the bottom end of the adjusting plate (4) are movably fitted to the outside of the powder-spreading roller (2). A cover plate (5) is fixedly connected to the top of each of the two adjusting plates (4). A drive assembly is installed on one side of the frame (1), and two limiting plates (8) are symmetrically installed on the drive assembly. A fixing frame (6) is fixedly connected between the two limiting plates (8) and the corresponding cover plate (5) for synchronously driving the two cover plates (5) to move synchronously, so that the width of the powder-spreading roller (2) is adapted to the width of the film, and the limiting plates (8) limit the film on both sides of the PVC calendered transparent film.

2. A modular combination PVC calendered transparent film dusting device according to claim 1, characterized in that, The drive assembly includes a bidirectional lead screw (7) that is rotatably connected to the inner side of the frame (1) on one side of the powder-spreading roller (2), and two limiting plates (8) are symmetrically threaded on the outer side of the bidirectional lead screw (7). The tops of the two limiting plates (8) are movably attached to the outer side of the powder-spreading roller (2).

3. A modular combination PVC calendered transparent film duster according to claim 2, wherein, The drive assembly includes a slide rod (11) fixedly connected to the inner side of the frame (1) on the side away from the bidirectional lead screw (7), and two limiting plates (8) symmetrically slidingly sleeved on the outer side of the slide rod (11).

4. A modular combination PVC calendered transparent film dusting device according to claim 2, characterized in that, Both sides of the two limiting plates (8) are fitted with telescopic bellows (10), and the inner diameter of the telescopic bellows (10) is larger than the outer diameter of the two-way screws (7).

5. A modular combination PVC calendered transparent film dusting device according to claim 2, wherein, One end of the bidirectional lead screw (7) rotates through the frame (1), and a handwheel (9) is fixedly connected to the bidirectional lead screw (7) on the outside of the frame (1).

6. A modular combination PVC calendered transparent film dusting device according to claim 3, wherein, A sealing gasket (12) is fixedly connected to the outside of the adjusting plate (4) to ensure the sealing of the connection between the adjusting plate (4) and the inner wall of the powder storage box (3) and to prevent powder leakage.

Images