High-precision film calendering device
By incorporating a moving plate and screw adjustment structure into the calendering unit, the problem of insufficient roller gap adjustment accuracy was solved, resulting in improved film thickness uniformity and performance, and simplified operation and maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MIANYANG HENGBAO POLYMER MATERIAL MFG CO LTD
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-24
AI Technical Summary
Existing calender roller gap adjustment devices have problems such as limited adjustment accuracy, high cost, and easy to cause uneven pressure at both ends of the roller, which affects the uniformity of film thickness and product quality.
By setting a first moving plate in the first slot and cooperating with a second moving plate in the second slot, combined with the design of the screw and spiral hole, precise adjustment between the first and second extension rollers is achieved, and the uniformity and stability of the roller gap are ensured by using motor drive.
This approach achieves uniformity in film thickness and optimization of molecular orientation, improves the tensile and puncture resistance of the film, reduces the scrap rate, and simplifies the operation and maintenance process.
Smart Images
Figure CN224158731U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of calendering structure technology, specifically to a high-precision thin film calendering device. Background Technology
[0002] Film calendering is a processing method that continuously forms films or sheets from heated and plasticized thermoplastics through the gap between counter-rotating rollers. The process includes steps such as batching, mixing, extrusion, calendering, cooling, and winding. Calendering is the key step, enabling precise control of film thickness and optimization of molecular orientation, thereby improving the film's tensile strength, puncture resistance, and other properties. Calendered films have advantages such as uniform thickness and high quality, and are widely used in the production of PVC, PE, PI, ABS, and other plastic films and sheets.
[0003] Traditional calender roll gap adjustment devices typically employ mechanical, hydraulic, or hydraulic-mechanical methods. While these devices can adjust the gap, they have some shortcomings in practical applications. For example, mechanical adjustment devices usually require complex structures to achieve coarse and fine adjustments, and their adjustment accuracy is limited. Although hydraulic adjustment devices offer higher accuracy, they are expensive, and the bearing precision is difficult to guarantee under high-pressure operation. Furthermore, existing roll gap adjustment devices may cause uneven pressure at both ends of the roll during adjustment, thus affecting film thickness uniformity and product quality.
[0004] In view of the above, this application is hereby submitted. Utility Model Content
[0005] The purpose of this invention is to provide a high-precision thin film calendering device, which solves the problem of difficulty in adjusting the gap between the first and second calendering rolls in the prior art by setting a first moving plate in the first slot and cooperating with a second moving plate in the second slot.
[0006] The present invention is achieved through the following technical solution: The present invention provides a high-precision thin film calendering device, including a support platform, a first vertical plate and a second vertical plate are installed on the support platform, a first slot is provided on the first vertical plate, a first movable plate is provided in the first slot, and the first movable plate can move vertically along the first slot.
[0007] The second vertical plate is provided with a second slot, and a second movable plate is provided in the second slot. The second movable plate can move vertically along the second slot.
[0008] A first extending roller is installed between the first moving plate and the second moving plate, and a second extending roller is arranged between the first vertical plate and the first vertical plate. The first extending roller and the second extending roller can be driven by a motor to rotate in opposite directions.
[0009] The first moving plate is configured to adjust the distance between the first and second extending rollers after being driven by an external force, and the second moving plate can move vertically synchronously with the first moving plate.
[0010] Optionally, the upper end of the first vertical plate is provided with a first spiral hole, and a first screw is provided through the first spiral hole. The bottom of the first screw is connected to the first movable plate. The first screw is configured to adjust the vertical height of the first movable plate by engaging with the first spiral hole.
[0011] Optionally, a third movable plate is provided in the first slot, the third movable plate is located below the first movable plate, and the third movable plate can move vertically along the first slot;
[0012] A fourth movable plate is provided in the second slot. The fourth movable plate is located below the second movable plate and can move vertically along the second slot.
[0013] The second extension roller is installed between the third and fourth moving plates. The third or fourth moving plate is configured to adjust the distance between the first and second extension rollers after being driven by an external force. The third moving plate can move vertically synchronously with the fourth moving plate, or the fourth moving plate can move vertically synchronously with the third moving plate.
[0014] The sum of the heights of the first and third movable plates is less than the height of the first slot, and the sum of the heights of the second and fourth movable plates is less than the height of the second slot.
[0015] Optionally, a second spiral hole is provided at the lower end of the first vertical plate, and a second screw is provided through the second spiral hole. The top of the second screw is connected to the third movable plate, and the second screw is configured to adjust the vertical height of the third movable plate by engaging with the thread of the second spiral hole.
[0016] Optionally, a first spring is provided between the first movable plate and the third movable plate, with one end of the first spring connected to the first movable plate and the other end connected to the third movable plate.
[0017] Optionally, a second spring is provided between the second movable plate and the fourth movable plate, with one end of the second spring connected to the second movable plate and the other end connected to the fourth movable plate.
[0018] Optionally, a sliding groove is provided on both sides of the first slot, and a slider is provided on both sides of the first movable plate. The slider is disposed in the sliding groove and can move vertically along the sliding groove.
[0019] Optionally, a first handle is provided at the upper end of the first screw.
[0020] Optionally, a second handle is provided at the lower end of the second screw.
[0021] Optionally, the bottom of the support platform is provided with multiple support feet, and the second screw passes through the support platform.
[0022] Compared with the prior art, the embodiments of this utility model have the following advantages and beneficial effects:
[0023] 1. The high-precision film calendering device provided in this embodiment of the invention, by setting a first moving plate that can move vertically within a first slot and a second moving plate that can move vertically within a second slot, allows for precise adjustment of the gap between the first and second calendering rollers via manual or mechanical drive. The second moving plate moves vertically synchronously with the first moving plate, ensuring uniform adjustment of the gap between the first and second calendering rollers and avoiding uneven gap caused by unilateral movement. During use, heated and plasticized thermoplastic plastic is calendered into a film or sheet through the gap between the first and second calendering rollers. The first and second calendering rollers are driven by a motor to rotate in opposite directions, ensuring that the plastic is uniformly calendered within the roller gap, forming a film of uniform thickness. This embodiment of the invention, through the cooperation of the moving plate and the slot, achieves precise adjustment of the gap between the first and second calendering rollers, ensuring uniform film thickness, optimizing molecular orientation, and thus improving the tensile and puncture resistance properties of the film.
[0024] 2. In this embodiment of the invention, a first screw passes through a first helical hole in a first vertical plate and engages with the thread inside the helical hole. When the first screw rotates, due to the engagement of the thread, the first screw moves vertically along the first helical hole. Since the bottom of the first screw is connected to the first moving plate, the vertical movement of the first screw drives the first moving plate to move vertically along the first slot. The second moving plate is indirectly connected to the first moving plate through the first extending roller and can move vertically synchronously with the first moving plate. This structure allows for precise adjustment of the gap between the first and second extending rollers by rotating the first screw, improving convenience and accuracy, and reducing the scrap rate caused by inaccurate gap adjustment. The device has a simple structure and is easy to operate and maintain.
[0025] 3. This embodiment of the invention further improves the stability of the device by setting a third and a fourth moving plate, and by providing dual adjustment with a second screw and a first screw. The sum of the heights of the first and third moving plates is less than the height of the first slot, ensuring that they do not interfere with each other during vertical movement. Similarly, the sum of the heights of the second and fourth moving plates is less than the height of the second slot, also ensuring that they do not interfere with each other during vertical movement. In use, rotating the first screw adjusts the vertical height of the first moving plate, thereby changing the gap between the first and second extending rollers. Rotating the second screw adjusts the vertical height of the third moving plate, further precisely controlling the gap between the first and second extending rollers. The second moving plate can move vertically synchronously with the first moving plate, or the fourth moving plate can move vertically synchronously with the third moving plate, ensuring the uniformity of gap adjustment.
[0026] In general, the high-precision thin film calendering apparatus provided by the embodiments of this utility model achieves the purpose of flexibly and stably adjusting the gap between the first calendering roll and the second calendering roll by setting a first moving plate in the first slot and cooperating with a second moving plate in the second slot. Attached Figure Description
[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 A schematic diagram of the high-precision thin film calendering apparatus provided in this embodiment of the utility model;
[0029] Figure 2 This is a schematic diagram of the first vertical plate structure provided in an embodiment of the present utility model;
[0030] Figure 3 This is a schematic diagram of the second vertical plate structure provided in an embodiment of the present utility model;
[0031] Figure 4 This is a schematic diagram of the moving structure of the moving plate provided in an embodiment of the present utility model.
[0032] The attached diagram shows the markings and corresponding component names:
[0033] 1-Support platform, 2-First vertical plate, 3-Second vertical plate, 4-First slot, 5-Second slot, 6-First moving plate, 7-Second moving plate, 8-First extending roller, 9-Second extending roller, 10-First spiral hole, 12-First screw, 13-Third moving plate, 14-Fourth moving plate, 15-Second spiral hole, 16-Second screw, 17-First spring, 18-Second spring, 19-Slide groove, 20-Slider, 21-First handle, 22-Second handle, 23-Support foot. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0037] In the description of this utility model, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.
[0038] Example
[0039] like Figure 1As shown, this utility model embodiment provides a high-precision thin film calendering device, including a support platform 1, on which a first vertical plate 2 and a second vertical plate 3 are mounted. The first vertical plate 2 is provided with a first slot 4, and a first movable plate 6 is provided in the first slot 4, which can move vertically along the first slot 4. The second vertical plate 3 is provided with a second slot 5, and a second movable plate 7 is provided in the second slot 5, which can move vertically along the second slot 5. A first calendering roller 8 is installed between the first movable plate 6 and the second movable plate 7, and a second calendering roller 9 is provided between the first vertical plate 2 and the first vertical plate 2. The first calendering roller 8 and the second calendering roller 9 can be driven by a motor to rotate in opposite directions. The first movable plate 6 is configured to adjust the distance between the first calendering roller 8 and the second calendering roller 9 when driven by an external force, and the second movable plate 7 can move vertically synchronously with the first movable plate 6.
[0040] Specifically, the support platform 1 is used to install and support other components, ensuring the stability and rigidity of the device. The support platform 1 is equipped with a first vertical plate 2 and a second vertical plate 3, which are used to fix and support the first extruded roller 8 and the second extruded roller 9, ensuring the stability and positional accuracy of the rollers. The first slot 4 and the second slot 5 provide vertical movement tracks for the first moving plate 6 and the second moving plate 7, respectively, ensuring smooth movement of the moving plates. The first moving plate 6 and the second moving plate 7 adjust the gap between the first extruded roller 8 and the second extruded roller 9 through vertical movement, ensuring precise control of the gap. The first extruded roller 8 and the second extruded roller 9 calender the heated and plasticized thermoplastic into a film or sheet by rotating in opposite directions, controlling the thickness and quality of the film.
[0041] In use, the first moving plate 6 can be moved vertically within the first slot 4 manually or mechanically. The second moving plate 7 moves vertically synchronously with the first moving plate 6, ensuring uniform gap adjustment between the first ducting roller 8 and the second ducting roller 9, and avoiding uneven gap caused by unilateral movement. This structure ensures the uniformity of film thickness while also improving the convenience and accuracy of gap adjustment. The device has a simple structure, is easy to operate and maintain, and operators can adjust the gap between the first ducting roller 8 and the second ducting roller 9 according to actual needs.
[0042] For example, such as Figure 2 and Figure 3As shown, the upper end of the first vertical plate 2 is provided with a first helical hole 10, and a first screw 12 is inserted through the first helical hole 10. The bottom of the first screw 12 is connected to the first movable plate 6. The first screw 12 is configured to adjust the vertical height of the first movable plate 6 by engaging with the thread in the first helical hole 10. This structure allows for easy fine adjustment of the gap by rotating the first screw 12, without the need for complex mechanical structures or hydraulic systems. Specifically, the first screw 12 passes through the first helical hole 10 on the first vertical plate 2 and engages with the thread in the first helical hole 10. When the first screw 12 rotates, due to the engagement of the thread, the first screw 12 will move vertically along the first helical hole 10. The bottom of the first screw 12 is connected to the first movable plate 6, so the vertical movement of the first screw 12 will drive the first movable plate 6 to move vertically along the first slot 4. The second movable plate 7 is indirectly connected to the first movable plate 6 through the first extension roller 8 and can move vertically synchronously with the first movable plate 6.
[0043] To further improve the flexibility of the device, a third movable plate 13 is provided in the first slot 4 of this embodiment of the invention. The third movable plate 13 is located below the first movable plate 6 and can move vertically along the first slot 4. A fourth movable plate 14 is provided in the second slot 5. The fourth movable plate 14 is located below the second movable plate 7 and can move vertically along the second slot 5. A second extension roller 9 is installed between the third movable plate 13 and the fourth movable plate 14. The third movable plate 13 or the fourth movable plate 14 is configured to adjust the distance between the first extension roller 8 and the second extension roller 9 after being driven by an external force. The third movable plate 13 can move vertically synchronously with the fourth movable plate 14, or the fourth movable plate 14 can move vertically synchronously with the third movable plate 13. The sum of the heights of the first movable plate 6 and the third movable plate 13 is less than the height of the first slot 4, and the sum of the heights of the second movable plate 7 and the fourth movable plate 14 is less than the height of the second slot 5.
[0044] Preferably, the adjustment method of the second movable plate 7 is similar to that of the first movable plate 6. Specifically, a second spiral hole 15 is provided at the lower end of the first vertical plate 2, and a second screw 16 is provided through the second spiral hole 15. The top of the second screw 16 is connected to the third movable plate 13. The second screw 16 is configured to adjust the vertical height of the third movable plate 13 by threading with the second spiral hole 15.
[0045] In the above structure, the third moving plate 13 is disposed within the first slot 4, located below the first moving plate 6; the fourth moving plate 14 is disposed within the second slot 5, located below the second moving plate 7. The third moving plate 13 and the fourth moving plate 14 can move vertically along their respective slots, and the second extending roller 9 is installed between the third moving plate 13 and the fourth moving plate 14. The second screw 16, through threaded engagement with the second helical hole 15, can adjust the vertical height of the third moving plate 13, thereby achieving precise adjustment of the gap between the first extending roller 8 and the second extending roller 9. Of course, in other embodiments, the second helical hole 15 can be disposed on the fourth moving plate 14, and this is not a limitation here.
[0046] Returning to this embodiment of the invention, by rotating the first screw 12, the vertical height of the first moving plate 6 can be adjusted, thereby changing the gap between the first extending roller 8 and the second extending roller 9. By rotating the second screw 16, the vertical height of the third moving plate 13 can be adjusted, further precisely controlling the gap between the first extending roller 8 and the second extending roller 9. Since the fourth moving plate 14 can move vertically synchronously with the third moving plate 13, the uniformity of the gap adjustment is ensured. This embodiment of the invention achieves high-precision control of the gap between the first extending roller 8 and the second extending roller 9 through the dual adjustment mechanism of the first screw 12 and the second screw 16.
[0047] In a preferred embodiment of this utility model, a first spring 17 is provided between the first moving plate 6 and the third moving plate 13. One end of the first spring 17 is connected to the first moving plate 6, and the other end is connected to the third moving plate 13. Specifically, the function of the first spring 17 is to provide elastic support. When the first screw 12 or the second screw 16 adjusts the vertical height of the moving plate, the first spring 17 can automatically adjust its extension and contraction state to ensure that the relative position between the first moving plate 6 and the third moving plate 13 remains stable, thereby maintaining the uniformity of the gap between the first extension roller 8 and the second extension roller 9. The elastic effect of the first spring 17 can also absorb the small vibrations or uneven forces generated during the adjustment process, ensuring the stability of the gap adjustment.
[0048] It should be noted that the connection between the first screw 12 and the first movable plate 6 can be a fixed connection, including welding, integral installation, etc., or a detachable connection, including threaded connection, bonding, riveting, etc., without limitation, as long as sufficient connection stability is achieved; similarly, the connection between the second screw 16 and the third movable plate 13 can be a fixed connection, including welding, integral installation, etc., or a detachable connection, including threaded connection, bonding, riveting, etc., without limitation, as long as sufficient connection stability is achieved. As a preferred embodiment of this utility model, the first screw 12 and the first movable plate 6 are connected by threads, and the second screw 16 and the third movable plate 13 are connected by threads.
[0049] It should also be noted that the first screw 12 and the second screw 16 provided in this utility model embodiment can both be driven manually or driven by a motor. There is no limitation here. The specific settings can be made according to the actual situation. When the first screw 12 and the second screw 16 are both driven manually, a first handle 21 can be provided at the upper end of the first screw 12 and a second handle 22 can be provided at the lower end of the second screw 16.
[0050] More preferably, a second spring 18 is provided between the second moving plate 7 and the fourth moving plate 14. One end of the second spring 18 is connected to the second moving plate 7, and the other end is connected to the fourth moving plate 14. Specifically, the second spring 18 is disposed between the second moving plate 7 and the fourth moving plate 14. When the first screw 12 or the second screw 16 adjusts the vertical height of the moving plate, the second spring 18 can automatically adjust its extension and contraction state to ensure that the relative position between the second moving plate 7 and the fourth moving plate 14 remains stable, thereby maintaining the uniformity of the gap between the first extension roller 8 and the second extension roller 9.
[0051] Furthermore, such as Figure 4 As shown, sliding grooves 19 are provided on both sides of the first slot 4, and sliders 20 are provided on both sides of the first moving plate 6. The sliders 20 are disposed in the sliding grooves 19 and can move vertically along the sliding grooves 19. The sliders 20 are embedded in the sliding grooves 19. When the first moving plate 6 moves vertically in the first slot 4, the sliders 20 move vertically along the sliding grooves 19. The cooperation between the sliders 20 and the sliding grooves 19 can absorb the small vibrations or uneven forces generated during the adjustment process, ensuring the stability of the gap adjustment. This structure is also applicable to the sliding structures of the second moving plate 7, the third moving plate 13, and the fourth moving plate 14, and will not be described again here. In this embodiment of the utility model, by adjusting the first screw 12 and the second screw 16, combined with the cooperation between the sliders 20 and the sliding grooves 19, the gap between the first extending roller 8 and the second extending roller 9 can be smoothly and accurately controlled.
[0052] To improve the stability and applicability of the support platform 1, multiple support feet 23 of a certain height can be installed at the bottom of the support platform 1, with the second screw 16 penetrating through the support platform 1. The support feet 23 provide stable support, ensuring the stability and rigidity of the entire calendering unit during operation. The even distribution of multiple support feet 23 effectively disperses the weight of the equipment, reducing instability caused by uneven ground or equipment vibration. The second screw 16 penetrates the support platform 1 and engages with the second spiral hole 15 at the lower end of the first vertical plate 2, allowing operators to easily adjust the vertical height of the third moving plate 13.
[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model. It should be noted that the structures or components illustrated in the accompanying drawings are not necessarily drawn to scale, and descriptions of well-known components, processing techniques, and processes are omitted to avoid unnecessarily limiting the utility model.
Claims
1. A high-precision thin film calendering apparatus, characterized in that, Includes a support platform (1), on which a first vertical plate (2) and a second vertical plate (3) are installed. A first slot (4) is provided on the first vertical plate (2), and a first movable plate (6) is provided in the first slot (4). The first movable plate (6) can move vertically along the first slot (4). The second vertical plate (3) is provided with a second slot (5), and a second movable plate (7) is provided in the second slot (5). The second movable plate (7) can move vertically along the second slot (5). A first extension roller (8) is installed between the first moving plate (6) and the second moving plate (7), and a second extension roller (9) is provided between the first vertical plate (2) and the first vertical plate (2). The first extension roller (8) and the second extension roller (9) can be driven by a motor to rotate in opposite directions respectively. The first moving plate (6) is configured to adjust the distance between the first extension roller (8) and the second extension roller (9) after being driven by an external force, and the second moving plate (7) can move vertically synchronously with the first moving plate (6).
2. The high-precision thin film calendering apparatus according to claim 1, characterized in that, The upper end of the first vertical plate (2) is provided with a first spiral hole (10), and a first screw (12) is provided through the first spiral hole (10). The bottom of the first screw (12) is connected to the first movable plate (6). The first screw (12) is configured to adjust the vertical height of the first movable plate (6) by threading with the first spiral hole (10).
3. The high-precision thin film calendering apparatus according to claim 2, characterized in that, A third movable plate (13) is provided in the first slot (4). The third movable plate (13) is located below the first movable plate (6). The third movable plate (13) can move vertically along the first slot (4). A fourth movable plate (14) is provided in the second slot (5). The fourth movable plate (14) is located below the second movable plate (7). The fourth movable plate (14) can move vertically along the second slot (5). The second extension roller (9) is installed between the third moving plate (13) and the fourth moving plate (14). The third moving plate (13) or the fourth moving plate (14) is configured to adjust the distance between the first extension roller (8) and the second extension roller (9) after being driven by an external force. The third moving plate (13) can move vertically synchronously with the fourth moving plate (14) or the fourth moving plate (14) can move vertically synchronously with the third moving plate (13). The height of the first moving plate (6) and the third moving plate (13) is less than the height of the first slot (4), and the height of the second moving plate (7) and the fourth moving plate (14) is less than the height of the second slot (5).
4. The high-precision thin film calendering apparatus according to claim 3, characterized in that, The lower end of the first vertical plate (2) is provided with a second spiral hole (15), and a second screw (16) is provided through the second spiral hole (15). The top of the second screw (16) is connected to the third moving plate (13). The second screw (16) is configured to adjust the vertical height of the third moving plate (13) by threading with the second spiral hole (15).
5. A high-precision thin film calendering apparatus according to claim 3, characterized in that, A first spring (17) is provided between the first movable plate (6) and the third movable plate (13). One end of the first spring (17) is connected to the first movable plate (6), and the other end is connected to the third movable plate (13).
6. The high-precision thin film calendering apparatus according to claim 3, characterized in that, A second spring (18) is provided between the second movable plate (7) and the fourth movable plate (14). One end of the second spring (18) is connected to the second movable plate (7), and the other end is connected to the fourth movable plate (14).
7. The high-precision thin film calendering apparatus according to claim 1, characterized in that, The first slot (4) has sliding grooves (19) on both sides of its edge, and the first moving plate (6) has sliders (20) on both sides of its edge. The sliders (20) are located in the sliding grooves (19) and can move vertically along the sliding grooves (19).
8. A high-precision thin film calendering apparatus according to claim 2, characterized in that, The upper end of the first screw (12) is provided with a first handle (21).
9. A high-precision thin film calendering apparatus according to claim 4, characterized in that, The lower end of the second screw (16) is provided with a second handle (22).
10. A high-precision thin film calendering apparatus according to claim 4, characterized in that, The bottom of the support platform (1) is provided with multiple support feet (23), and the second screw (16) passes through the support platform (1).