Coaxial linkage device of coating machine

Abstract

This utility model discloses a coaxial linkage device for a coating machine. The device includes an impregnation tank, an active traction roller, a squeeze roller, a take-up roller, and a guide roller. The active traction roller is positioned above the impregnation tank to pull the resin-impregnated fiber cloth. The squeeze roller presses the fiber cloth tightly against the surface of the active traction roller. The guide roller is positioned on the conveying path between the active traction roller and the take-up roller. The improvement lies in that the guide roller is an actively driven roller, and its surface linear velocity is consistent with that of the active traction roller. By replacing the traditional unpowered idler roller with a synchronously driven active roller, this utility model effectively eliminates tension fluctuations in the impregnated material during transmission, thereby solving problems such as material wrinkling, stretching deformation, uneven winding, and uneven resin distribution caused by unstable tension, thus improving product quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of prepreg production equipment, specifically to a coaxial linkage device for a coating machine. Background Technology

[0002] In existing technologies, typical resin coating equipment usually includes an impregnation tank, an active traction roller, an extrusion roller, a take-up roller, and a guide roller. Its workflow is as follows: After the fiber base fabric is impregnated with resin in the impregnation tank, it is pulled upwards from the tank by the active traction roller; the extrusion roller, under the action of a cylinder, presses the impregnated material onto the active traction roller, squeezing out excess resin by controlling the pressure, thereby precisely controlling the resin content and thickness of the impregnated material; subsequently, the impregnated material is redirected and guided by a guide roller, and finally wound into a roll by the take-up roller.

[0003] In such equipment structures, the guide roller located between the active traction roller and the take-up roller is typically designed as a non-powered idler roller. However, due to the significant viscosity of the resin-impregnated material, considerable frictional resistance and adhesion are generated when passing through this driven guide roller. This resistance causes the impregnated material to experience unstable and difficult-to-control tension within the transmission section between the active traction roller and the take-up roller. This unstable tension can cause the impregnated material to wrinkle when relaxed or be accidentally stretched and deformed when over-tensioned, damaging fiber orientation and affecting the uniformity of product thickness. Tension fluctuations can also directly lead to uneven winding, resulting in areas of varying tightness within the roll, forming the so-called "chrysanthemum" defect, affecting product appearance and subsequent automated processing. Furthermore, for applications with strict requirements on resin content, unstable tension may cause uneven resin distribution or local segregation within the fiber cloth, ultimately leading to inconsistent product performance and low yield.

[0004] Therefore, there is a need for an equipment improvement scheme that can effectively stabilize the transmission tension of the impregnating material, thereby improving product quality consistency and production efficiency. Utility Model Content

[0005] In order to overcome the above-mentioned defects of existing resin coating machines, this utility model provides a coaxial linkage device for coating machines.

[0006] The technical solution adopted by this utility model is as follows: A coaxial linkage device for a coating machine, characterized in that it includes an impregnation tank, an active traction roller, a squeeze roller, a take-up roller, and a guide roller; the active traction roller is disposed above the impregnation tank and is used to pull the resin-impregnated fiber cloth out of the impregnation tank; the squeeze roller is disposed close to the active traction roller and is used to press the resin-impregnated fiber cloth onto the surface of the active traction roller; the guide roller is disposed on the conveying path between the active traction roller and the take-up roller; the guide roller is an active drive roller, and the roller surface linear velocity of the guide roller is consistent with the roller surface linear velocity of the active traction roller.

[0007] Preferably, the diameter of the guide roller is equal to that of the active traction roller.

[0008] Preferably, the guide roller and the active traction roller are powered by the same drive motor.

[0009] Preferably, the drive motor synchronously drives the active traction roller and the guide roller through a chain drive system.

[0010] Preferably, the chain drive system includes: a first driving sprocket and a second driving sprocket mounted on the output shaft of the drive motor; a first driven sprocket mounted on the end of the driving traction roller shaft; a second driven sprocket mounted on the end of the guide roller shaft; a first drive chain meshing with the first driving sprocket and the first driven sprocket; and a second drive chain meshing with the second driving sprocket and the second driven sprocket.

[0011] Preferably, the first driving sprocket and the second driving sprocket have the same specifications, and the first driven sprocket and the second driven sprocket have the same specifications.

[0012] Preferably, the extrusion roller is driven by a pneumatic cylinder and provides the clamping force, and the pressure of the pneumatic cylinder is adjustable.

[0013] Preferably, it is suitable for industrial production environments and is used to manufacture industrial wrapping tape or orthopedic fixation medical splints.

[0014] This utility model has the following beneficial effects: 1. Stable transmission tension: By improving the unpowered idler roller in the traditional equipment to an active drive guide roller with the same linear speed as the active traction roller, the tension fluctuation of the impregnated material caused by friction and adhesion between the traction roller and the take-up roller is completely eliminated. This avoids problems such as wrinkles and accidental stretching deformation caused by unstable tension during the transmission of the impregnated material, ensuring uniform product thickness and straight fibers. At the same time, it effectively prevents defects such as "chrysanthemum pattern" during winding, making the winding neater and tighter. 2. Uniform resin distribution: The stable tension environment ensures that the resin inside the impregnating material will not segregate or be unevenly distributed due to drastic changes in tension. This allows for precise control of the resin content of the product, resulting in more stable and consistent overall performance. It significantly improves the yield and reliability of the product, which is especially beneficial for products with strict requirements for mechanical properties. 3. High transmission synchronization: The scheme of using the same drive motor in conjunction with the chain drive system to synchronously drive the active traction roller and the guide roller ensures a very high and constant speed ratio between the two. The transmission method has a simple structure, high synchronization accuracy, and smooth operation. It effectively avoids the speed matching error and control system complexity that may be caused by using multiple motors, and improves the reliability and durability of the equipment. 4. Optimize the production process: The entire device has a reasonable structural design. The concept of coaxial linkage simplifies the transmission structure, reduces downtime and adjustment time caused by tension issues, and reduces the scrap rate, thereby optimizing the production process and improving overall production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating the principle of this utility model embodiment.

[0016] Figure 2 This is a schematic diagram of the chain drive system in an embodiment of this utility model (from...). Figure 1 (View from the inside angle).

[0017] 1-Immersion tank, 2-Active traction roller, 3-Extrusion roller, 4-Rewinding roller, 5-Guide roller, 6-Drive motor, 7-First active sprocket, 8-Second active sprocket, 9-First driven sprocket, 10-Second driven sprocket, 11-First transmission chain, 12-Second transmission chain, 13-Pneumatic cylinder. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0019] In the embodiments, such as Figures 1-2The diagram illustrates a coaxial linkage device for a coating machine, characterized by comprising an impregnation tank 1, an active traction roller 2, a compression roller 3, a take-up roller 4, and a guide roller 5. The active traction roller 2 is positioned above the impregnation tank 1 to pull the resin-impregnated fiber cloth out of the impregnation tank 1. The compression roller 3 is positioned close to the active traction roller 2 to press the resin-impregnated fiber cloth against the surface of the active traction roller 2. The guide roller 5 is positioned on the conveying path between the active traction roller 2 and the take-up roller 4. The guide roller 5 is an active drive roller, and its surface linear velocity is consistent with that of the active traction roller 2. By setting the guide roller 5 as an active drive roller and ensuring its surface linear velocity is consistent with that of the active traction roller 2, a stable auxiliary traction force is provided for the resin-impregnated fiber cloth in the transmission section between the active traction roller 2 and the take-up roller 4. This counteracts the frictional and viscous resistance between the material and the roller surface, eliminates tension fluctuations that cause wrinkling, stretching, and uneven winding of the material, and ensures the smoothness of the transmission process and product quality.

[0020] In the embodiments, such as Figures 1-2 As shown, the guide roller 5 and the active traction roller 2 have the same diameter. By setting the diameters of the guide roller 5 and the active traction roller 2 to be equal, it is ensured that they have the same angular velocity under the condition that their linear velocities are the same. This simplifies the calculation and configuration of the transmission system, avoids introducing unnecessary complexities in the transmission ratio due to diameter differences, and provides a structural basis for achieving precise and stable synchronous drive.

[0021] In the embodiments, such as Figures 1-2 As shown, the guide roller 5 and the active traction roller 2 are powered by the same drive motor 6. By using the same drive motor 6 to power both the guide roller 5 and the active traction roller 2, the power source for both is ensured from the outset. This avoids synchronization errors caused by speed command differences and response delays that may occur when using two independent motors, ensuring a constant speed relationship between the two and making system control simpler and more reliable.

[0022] In the embodiments, such as Figures 1-2As shown, the drive motor 6 synchronously drives the active traction roller 2 and the guide roller 5 through a chain drive system. Specifically, the chain drive system includes: a first drive sprocket 7 and a second drive sprocket 8 mounted on the output shaft of the drive motor 6; a first driven sprocket 9 mounted on the shaft end of the active traction roller 2; a second driven sprocket 10 mounted on the shaft end of the guide roller 5; a first transmission chain 11 meshing with the first drive sprocket 7 and the first driven sprocket 9; and a second transmission chain 12 meshing with the second drive sprocket 8 and the second driven sprocket 10. Synchronous drive is achieved through this chain drive system, utilizing the precise meshing characteristics of chain drives to reliably and without slippage transmit the power of the drive motor 6 to the active traction roller 2 and the guide roller 5 respectively. The two independent transmission chains (the first transmission chain 11 and the second transmission chain 12) drive the active traction roller 2 and the guide roller 5 respectively, forming a stable and reliable parallel transmission structure. This transmission system is robust and easy to maintain, ensuring stable transmission accuracy over a long period in industrial production environments. Moreover, this layout allows each roller to have an independent drive path with no direct mechanical interference between them. The transmission path is clear, effectively distributing the load and ensuring smooth transmission and system reliability.

[0023] In the embodiments, such as Figures 1-2 As shown, the first driving sprocket 7 and the second driving sprocket 8 have the same specifications, and the first driven sprocket 9 and the second driven sprocket 10 have the same specifications. By setting the first driving sprocket 7 and the second driving sprocket 8 to have the same specifications, and simultaneously setting the first driven sprocket 9 and the second driven sprocket 10 to have the same specifications, it is ensured that the two transmission paths from the drive motor 6 to the driving traction roller 2 and from the drive motor 6 to the guide roller 5 have exactly the same transmission ratio. This achieves strict consistency in the linear velocity of the roller surface of the driving traction roller 2 and the guide roller 5, thus locking the synchronization relationship from a mechanical structure perspective.

[0024] In the embodiments, such as Figures 1-2 As shown, the extrusion roller 3 is driven by a pneumatic cylinder 13, which provides the clamping force. The pressure of the pneumatic cylinder 13 is adjustable. Driving the extrusion roller 3 with the pneumatic cylinder 13 and providing adjustable clamping force allows the operator to flexibly and precisely adjust the clamping force according to different product specifications (such as fiber cloth type, target resin content, and thickness). This adjustability is an important means of achieving precise control of product parameters and ensuring batch-to-batch consistency.

[0025] The apparatus described in this embodiment is particularly suitable for the continuous, high-quality production of industrial winding tapes and orthopedic fixation splints, where stringent tension control is required. The entire apparatus directly improves the consistency of mechanical properties and appearance quality of these specific products through stable tension, uniform resin distribution, and precise control.

[0026] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A coaxial linkage device for a coating machine, characterized in that, It includes an impregnation tank (1), an active traction roller (2), a squeeze roller (3), a take-up roller (4), and a guide roller (5); The active traction roller (2) is positioned above the impregnation tank (1) and is used to pull the resin-impregnated fiber cloth out of the impregnation tank (1); The extrusion roller (3) is positioned close to the active traction roller (2) to press the resin-impregnated fiber cloth against the surface of the active traction roller (2); The guide roller (5) is disposed on the conveying path between the active traction roller (2) and the take-up roller (4); Its features are, The guide roller (5) is an active drive roller, and the roller surface linear velocity of the guide roller (5) is consistent with the roller surface linear velocity of the active traction roller (2).

2. The coaxial linkage device for the coating machine according to claim 1, characterized in that, The diameter of the guide roller (5) is the same as that of the active traction roller (2).

3. The coaxial linkage device for the coating machine according to claim 1 or 2, characterized in that, The guide roller (5) and the active traction roller (2) are powered by the same drive motor (6).

4. The coaxial linkage device for the coating machine according to claim 3, characterized in that, The drive motor (6) synchronously drives the active traction roller (2) and the guide roller (5) through a chain drive system.

5. The coaxial linkage device for the coating machine according to claim 4, characterized in that, The chain drive system includes: The first drive sprocket (7) and the second drive sprocket (8) are mounted on the output shaft of the drive motor (6). The first driven sprocket (9) is installed at the shaft end of the active traction roller (2); The second driven sprocket (10) is installed at the shaft end of the guide roller (5). A first transmission chain (11) meshes with the first driving sprocket (7) and the first driven sprocket (9). A second drive chain (12) meshes with the second drive sprocket (8) and the second driven sprocket (10).

6. The coaxial linkage device for the coating machine according to claim 5, characterized in that, The first driving sprocket (7) and the second driving sprocket (8) have the same specifications, and the first driven sprocket (9) and the second driven sprocket (10) have the same specifications.

7. The coaxial linkage device for the coating machine according to claim 1, characterized in that, The extrusion roller (3) is driven by a pneumatic cylinder (13) and provides clamping force, the pressure of which is adjustable.

8. The coaxial linkage device for the coating machine according to claim 1, characterized in that, Suitable for industrial production environments, used in the manufacture of industrial wrapping tape or orthopedic fixation medical splints.

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