Precision coating device for cellulose-based membrane preparation

Abstract

This utility model discloses a precision coating device for preparing cellulose-based membranes, relating to the technical field of cellulose-based membrane coating devices. The utility model includes a base and a support frame fixedly connected to the top of the base, and further includes: a coating section mounted on the support frame; two tension adjustment sections arranged mirror-image within the support frame; a correction section mounted on the support frame; each tension adjustment section includes a support assembly mounted on the support frame; and a power assembly mounted on the support assembly. By incorporating the tension adjustment section, this utility model solves the problem in existing coating devices where it is inconvenient to adjust the tension during extrusion coating, leading to wrinkles and stretching deformation of the substrate during coating, resulting in uneven coating thickness, localized excessive thickness or thinness, and affecting the forming quality and performance stability of the cellulose-based membrane.

Description

Technical Field

[0001] This invention belongs to the technical field of cellulose-based membrane coating devices, and in particular relates to a precision coating device for the preparation of cellulose-based membranes. Background Technology

[0002] With the booming development of the green and environmentally friendly materials industry, cellulose-based membranes, with their excellent properties such as renewability, biodegradability, and good biocompatibility, are in high demand in multiple fields such as packaging, pharmaceuticals, and electronics. In the preparation process of cellulose-based membranes, precise coating is the core process that determines the uniformity of membrane thickness, surface smoothness, and functional characteristics. Its process precision directly affects the final product quality and application performance of cellulose-based membranes. Therefore, high-performance precision coating equipment for cellulose-based membrane preparation is needed to achieve precise control of the coating process.

[0003] However, existing coating devices are not easy to adjust the tension during extrusion coating, which causes wrinkles and stretching deformation of the substrate during the coating process, resulting in uneven coating thickness, local over-thickness and under-thinness, which affects the forming quality and performance stability of cellulose-based membranes. Utility Model Content

[0004] The purpose of this invention is to provide a precise coating device for the preparation of cellulose-based membranes. By setting up a tension adjustment part, it solves the problem that existing coating devices are not easy to adjust the tension during extrusion coating, which leads to wrinkles and stretching deformation of the substrate during the coating process, resulting in uneven coating thickness, local excessive thickness or thinness, and affecting the forming quality and performance stability of the cellulose-based membrane.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This invention relates to a precision coating device for preparing cellulose-based membranes, comprising a base and a support frame fixedly connected to the top of the base, and further comprising: a coating section mounted on the support frame; two tension adjustment sections arranged mirror-image within the support frame; a correction section mounted on the support frame; the tension adjustment section includes a support assembly mounted on the support frame; and a power assembly mounted on the support assembly; the support assembly includes components respectively formed on the front side of the support frame. The wall and the inner rear wall have trapezoidal sliding grooves, and a support frame is slidably connected between the two trapezoidal sliding grooves. The top of the support frame and the inner top wall of the support frame are both fixedly connected to inner slide rails. Two hinge blocks are slidably connected in each of the two inner slide rails. The two lower hinge blocks are each hinged with a hinge rod. The two hinge rods are hinged to each other and respectively hinged to the two upper hinge blocks. A tension roller is installed on the support frame and is rotatably connected to the support frame. The two inner slide rails are mirror images of each other, and the hinge shape of the two hinge rods is X-shaped.

[0006] Furthermore, the coating section includes a coating box fixedly connected to the top of the base, and two rotating shafts rotatably connected inside the support frame. The rotating shaft on the left side passes through the front side of the support frame, and coating rollers are fixedly connected to the outer walls of both rotating shafts. A motor is fixedly connected to the front side of the support frame, and the output shaft of the motor is fixedly connected to the rotating shaft on the left side via a coupling. A detection element is installed on the support frame; the two coating rollers correspond to the two tensioning rollers respectively, and the detection element includes a correction detector fixedly connected to the inner wall of the front side of the support frame.

[0007] Furthermore, the correction unit includes a correction component mounted on a support frame; a drive component disposed on the support frame; and the correction component is located above the space between the two tension rollers.

[0008] Furthermore, the power assembly includes a bidirectional threaded rod rotatably connected within the upper inner slide rail. The front side of the bidirectional threaded rod passes through the front side of the upper inner slide rail. The bidirectional threaded rod passes through two upper hinge blocks, both of which are threadedly connected to the bidirectional threaded rod. A second motor is fixedly connected to the front side of the upper inner slide rail, and the output shaft of the second motor is fixedly connected to the bidirectional threaded rod via a coupling. The two upper hinge blocks are located at the threads on both sides of the bidirectional threaded rod.

[0009] Furthermore, the correction assembly includes a support plate fixedly connected to a support frame, a cylindrical rod fixedly connected to the top of the support plate, a U-shaped bracket rotatably connected to the top of the cylindrical rod, a correction roller mounted on the U-shaped bracket, and the correction roller rotatably connected to the U-shaped bracket; the support plate is located between two coating rollers.

[0010] Furthermore, the drive assembly includes a fixed block fixedly connected to the inner wall of the front side of the support frame, a connecting block hinged to the fixed block, an electric telescopic rod fixedly connected to the side of the connecting block away from the fixed block, and a transmission component provided on the U-shaped bracket; the electric telescopic rod is located below the U-shaped bracket, the transmission component includes a transmission rod fixedly connected to the bottom of the U-shaped bracket, a transmission block rotatably connected to the outer wall of the transmission rod, and the output end of the electric telescopic rod fixedly connected to the transmission block.

[0011] Furthermore, the correction detector used in this device is of the Omron E3Z series, such as the E3Z-LS63, which is an infrared through-beam type with a detection distance of 1-60mm. It is compact and suitable for equipment with limited installation space.

[0012] This utility model has the following beneficial effects: 1. By setting up a tension adjustment unit, after starting the second motor, the hinge block is driven to slide closer through the bidirectional threaded rod. The hinge rod then drives the support frame and tension roller to move down closer to the coating roller. Similarly, by operating the two tension adjustment units, the distance between the tension roller and the coating roller can be adjusted, thereby adjusting the tension of the cellulose base film. This allows for flexible tension adjustment and avoids problems such as wrinkles and stretching deformation of the substrate due to improper tension, ensuring uniform coating thickness and improving the forming quality and performance stability of the cellulose base film. 2. By setting up a correction unit, when the correction detector detects the misalignment of the cellulose base film, it will drive the electric telescopic rod, which will move the transmission rod through the transmission block, causing the U-shaped bracket to rotate on the cylindrical rod, so that the correction roller can correct the cellulose base film. Reverse rotation can achieve correction in another direction, correcting the misalignment of the cellulose base film, avoiding coating misalignment caused by misalignment, reducing material waste and production interruption caused by misalignment, and improving production stability and efficiency.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional view of the coating part of this utility model; Figure 3 This is a partial cross-sectional view of the tension adjustment part of this utility model; Figure 4 This utility model Figure 3 A magnified structural diagram of A in the middle; Figure 5 This is a partial cross-sectional view of the correction section of this utility model; Figure 6 This utility model Figure 5 A magnified structural diagram of A in the diagram.

[0016] The attached diagram lists the components represented by each number as follows: 1. Coating section; 111. Base; 112. Support frame; 113. Coating box; 114. Rotating shaft; 115. Coating roller; 116. Motor 1; 117. Correction detector; 2. Tension adjustment section; 21. Support assembly; 211. Trapezoidal slide; 212. Support frame; 213. Inner slide rail; 214. Hinge block; 215. Hinge rod; 216. Tensioning roller; 22. Power assembly; 221. Bidirectional threaded rod; 222. Motor 2; 3. Correction section; 31. Correction assembly; 311. Support plate; 312. Cylindrical rod; 313. U-shaped bracket; 314. Correction roller; 32. Drive assembly; 321. Fixing block; 322. Connecting block; 323. Electric telescopic rod; 324. Transmission rod; 325. Transmission block. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-6As shown, this utility model is a precision coating device for preparing cellulose-based membranes, including a base 111 and a support frame 112 fixedly connected to the top of the base 111. It also includes: a coating section 1, mounted on the support frame 112; two tension adjustment sections 2, arranged mirror-imagely within the support frame 112; and a correction section 3, mounted on the support frame 112. The coating section 1 includes a coating box 113 fixedly connected to the top of the base 111, which rotates within the support frame 112. Two rotating shafts 114 are connected. The rotating shaft 114 on the left side passes through the front side of the support frame 112. Coating rollers 115 are fixedly connected to the outer walls of both rotating shafts 114. A motor 116 is fixedly connected to the front side of the support frame 112. The output shaft of the motor 116 is fixedly connected to the rotating shaft 114 on the left side through a coupling. Detection elements are installed on the support frame 112. The two coating rollers 115 correspond to the two tensioning rollers 216 respectively. The detection elements include a correction detector 117 fixedly connected to the inner wall of the front side of the support frame 112.

[0019] The tension adjustment unit 2 includes a support assembly 21, which is mounted on a support frame 112; and a power assembly 22, which is mounted on the support assembly 21. The support assembly 21 includes trapezoidal grooves 211 respectively formed on the inner walls of the front and rear sides of the support frame 112. A support frame 212 is slidably connected between the two trapezoidal grooves 211. Inner slide rails 213 are fixedly connected to the top of the support frame 212 and the inner wall of the top of the support frame 112. Two hinge blocks 214 are slidably connected in each of the two inner slide rails 213. Hinge rods 215 are hinged to the two lower hinge blocks 214. The two hinge rods 215 are hinged to each other and to the two upper hinge blocks 214 respectively. A tension roller 216 is mounted on the support frame 212 and is rotatably connected to the support frame 212. The two inner slide rails 213 are mirror images of each other. In this configuration, the two hinge rods 215 are hinged in an X-shape. The power assembly 22 includes a bidirectional threaded rod 221 rotatably connected within the upper inner slide rail 213. The front side of the bidirectional threaded rod 221 passes through the front side of the upper inner slide rail 213 and passes through two upper hinge blocks 214. Both upper hinge blocks 214 are threadedly connected to the bidirectional threaded rod 221. A second motor 222 is fixedly connected to the front side of the upper inner slide rail 213. The output shaft of the second motor 222 is fixedly connected to the bidirectional threaded rod 221 via a coupling. The two upper hinge blocks 214 are located at the threads on both sides of the bidirectional threaded rod 221. By setting the tension adjustment part 2, the tension can be flexibly adjusted to avoid problems such as wrinkles and stretching deformation of the substrate due to improper tension, ensuring uniform coating thickness and improving the molding quality and performance stability of the cellulose base film.

[0020] The correction unit 3 includes a correction assembly 31 mounted on the support frame 112 and a drive assembly 32 mounted on the support frame 112. The correction assembly 31 is located above the two tension rollers 216. The correction assembly 31 includes a support plate 311 fixedly connected to the support frame 112. A cylindrical rod 312 is fixedly connected to the top of the support plate 311. A U-shaped bracket 313 is rotatably connected to the top of the cylindrical rod 312. A correction roller 314 is mounted on the U-shaped bracket 313 and rotatably connected to the U-shaped bracket 313. The support plate 311 is located between the two coating rollers 115. The drive assembly 32 includes a drive assembly fixedly connected to the front side of the support frame 112. The inner wall has a fixing block 321, and a connecting block 322 is hinged to the fixing block 321. An electric telescopic rod 323 is fixedly connected to the side of the connecting block 322 away from the fixing block 321. A transmission component is provided on the U-shaped bracket 313. The electric telescopic rod 323 is located below the U-shaped bracket 313. The transmission component includes a transmission rod 324 fixedly connected to the bottom of the U-shaped bracket 313. A transmission block 325 is rotatably connected to the outer wall of the transmission rod 324. The output end of the electric telescopic rod 323 is fixedly connected to the transmission block 325. By setting the correction part 3, the offset of the cellulose base film is corrected, avoiding coating misalignment caused by offset, reducing material waste and production interruption caused by offset, and improving production stability and efficiency.

[0021] It should be noted that the control of motor 116, correction detector 117, two motors 222 and electric telescopic rod 323 in this application can all be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be achieved using existing technologies, such as PLC.

[0022] A specific application of this embodiment is as follows: During use, coating material is added to the coating box 113, and then the cellulose base film is passed over the two coating rollers 115. Then, motor 222 is started. Motor 222, through the bidirectional threaded rod 221, drives the corresponding two hinge blocks 214 to slide and approach each other within the corresponding inner slide rails 213. The two upper hinge blocks 214 then move the two hinge rods 215, which in turn move the two lower hinge blocks 214 within the corresponding inner slide rails 213, bringing them closer together. This pushes the support frame 212 downwards on the two trapezoidal grooves 211, thereby causing the tension roller 216 to approach the coating roller 115. Through the same operating process described above, the two tension adjustment units 2 are activated to adjust the tension between the two tension rollers 216 and the two coating rollers 115. The distance is adjusted to regulate the tension of the cellulose base film. Then, the motor 116 and the correction detector 117 are started. At this time, the motor 116 drives the coating roller 115 on the corresponding rotating shaft 114 to rotate. The coating roller 115 applies the coating material in the coating box 113 to the cellulose base film. Then, the cellulose base film is pulled and squeezed for coating. When the correction detector 117 detects the deviation of the cellulose base film, the correction detector 117 drives the electric telescopic rod 323. The electric telescopic rod 323 pushes the transmission rod 324 to move through the transmission block 325. The transmission rod 324 drives the U-shaped bracket 313 to rotate on the cylindrical rod 312. At this time, the U-shaped bracket 313 corrects the cellulose base film through the correction roller 314. Through the reverse operation process, the cellulose base film is corrected in another direction.

[0023] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A precision coating apparatus for preparing cellulose-based membranes, comprising a base (111) and a support frame (112) fixedly connected to the top of the base (111), characterized in that, Also includes: A coating part (1) is mounted on a support frame (112); Tension adjustment section (2), two tension adjustment sections (2) are provided, and the two tension adjustment sections (2) are arranged in a mirror image within the support frame (112); Correction part (3), said correction part (3) is installed on the support frame (112); The tension adjustment unit (2) includes a support assembly (21) which is mounted on the support frame (112); as well as A power assembly (22) is mounted on a support assembly (21); The support assembly (21) includes trapezoidal slide grooves (211) respectively opened on the front inner wall and the rear inner wall of the support frame (112). A support frame (212) is slidably connected between the two trapezoidal slide grooves (211). An inner slide rail (213) is fixedly connected to the top of the support frame (212) and the top inner wall of the support frame (112). Two hinge blocks (214) are slidably connected in the two inner slide rails (213). A hinge rod (215) is hinged on the two lower hinge blocks (214). The two hinge rods (215) are hinged to each other. The two hinge rods (215) are respectively hinged to the two upper hinge blocks (214). A tension roller (216) is installed on the support frame (212). The tension roller (216) is rotatably connected to the support frame (212). Among them, the two inner slide rails (213) are mirror images of each other, and the two hinge rods (215) are hinged in an X shape.

2. The precision coating apparatus for preparing cellulose-based membranes according to claim 1, characterized in that, The coating section (1) includes a coating box (113) fixedly connected to the top of the base (111). Two rotating shafts (114) are rotatably connected inside the support frame (112). The rotating shaft (114) on the left side passes through the front side of the support frame (112). Coating rollers (115) are fixedly connected to the outer walls of both rotating shafts (114). A motor (116) is fixedly connected to the front side of the support frame (112). The output shaft of the motor (116) is fixedly connected to the rotating shaft (114) on the left side through a coupling. A detection component is installed on the support frame (112). Among them, the two coating rollers (115) correspond to the two tensioning rollers (216) respectively.

3. The precision coating apparatus for preparing cellulose-based membranes according to claim 2, characterized in that, The correction unit (3) includes a correction component (31) mounted on the support frame (112); and A drive component (32) is disposed on a support frame (112); The correction assembly (31) is located above the two tension rollers (216).

4. The precision coating apparatus for preparing cellulose-based membranes according to claim 3, characterized in that, The power assembly (22) includes a bidirectional threaded rod (221) rotatably connected in an upper inner slide rail (213). The front side of the bidirectional threaded rod (221) passes through the front side of the upper inner slide rail (213). The bidirectional threaded rod (221) passes through two upper hinge blocks (214). Both upper hinge blocks (214) are threadedly connected to the bidirectional threaded rod (221). A second motor (222) is fixedly connected to the front side of the upper inner slide rail (213). The output shaft of the second motor (222) is fixedly connected to the bidirectional threaded rod (221) through a coupling. Among them, the two hinge blocks (214) located at the top are located at the threads on both sides of the bidirectional threaded rod (221).

5. The precision coating apparatus for preparing cellulose-based membranes according to claim 4, characterized in that, The correction assembly (31) includes a support plate (311) fixedly connected to the support frame (112), a cylindrical rod (312) fixedly connected to the top of the support plate (311), a U-shaped bracket (313) rotatably connected to the top of the cylindrical rod (312), a correction roller (314) installed on the U-shaped bracket (313), and the correction roller (314) rotatably connected to the U-shaped bracket (313). The support plate (311) is located between the two coating rollers (115).

6. The precision coating apparatus for preparing cellulose-based membranes according to claim 5, characterized in that, The drive assembly (32) includes a fixed block (321) fixedly connected to the inner wall of the front side of the support frame (112), a connecting block (322) is hinged on the fixed block (321), an electric telescopic rod (323) is fixedly connected to the side of the connecting block (322) away from the fixed block (321), and a transmission component is provided on the U-shaped bracket (313). The electric telescopic rod (323) is located below the U-shaped bracket (313).

7. The precision coating apparatus for preparing cellulose-based membranes according to claim 6, characterized in that, The detection component includes a correction detector (117) fixedly connected to the inner wall of the front side of the support frame (112).

8. The precision coating apparatus for preparing cellulose-based membranes according to claim 7, characterized in that, The transmission component includes a transmission rod (324) fixedly connected to the bottom of the U-shaped bracket (313), and a transmission block (325) is rotatably connected to the outer wall of the transmission rod (324). The output end of the electric telescopic rod (323) is fixedly connected to the transmission block (325).

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