A film unwinding and attaching device

Abstract

This utility model relates to the field of film application device technology, and in particular to an unwinding film application device, including a frame, two sets of tension adjustment mechanisms, and a film application mechanism. The frame is equipped with a sheet material receiving and discharging mechanism for conveying the sheet to be applied and a film material receiving and discharging mechanism for conveying the film to be applied onto the sheet. One set of tension adjustment mechanisms corresponds to the sheet material receiving and discharging mechanism, and the other set corresponds to the film material receiving and discharging mechanism. Each set of tension adjustment mechanisms includes a tension force detection component and a tension adjustment component. By setting two sets of tension adjustment mechanisms corresponding to the sheet material receiving and discharging mechanism and the film material receiving and discharging mechanism respectively, this utility model can adjust for the problem of uneven resistance of the sheet material and the film material during unwinding. When the tension of the sheet material or the film material is detected to be outside the set range, the tension adjustment component of the corresponding set can act in time to ensure that the tension of both is stable before entering the film application mechanism.

Description

Technical Field

[0001] This utility model relates to the field of film application device technology, and in particular to an unwinding film application device. Background Technology

[0002] An unwinding and film-applying device is a device used to unwind rolled sheets or rolls of material and attach a thin film to their surface. Its main function is to provide protection for the surface of the sheet material or to meet specific process requirements during the processing of the sheet material. In industries such as construction, automobiles, and machinery, many sheet rolls are easily scratched, soiled, or corroded during processing, transportation, and storage. By attaching a thin film, such as a plastic film, to the surface of the sheet roll using a film-applying device, the surface of the sheet material can be effectively protected, allowing it to maintain a good appearance and performance.

[0003] In the roll film application process, the sheet and film materials are usually stored in roll form and released and conveyed to the film application stage through an unwinding mechanism. Initially, when the roll diameter is large, the material's own weight results in low unwinding resistance. As the roll diameter gradually decreases, the resistance suddenly increases with the change in the inertia of the roll core. If the material has local wrinkles or hard folds, an instantaneous resistance peak will also be generated during unwinding. Existing film application equipment mostly uses a single tension adjustment mechanism, which only adjusts one of the film or sheet materials. When the unwinding resistance suddenly increases, the material is easily overstretched, especially thin film materials, resulting in deformation and wrinkles after film application. When the resistance decreases, the material is prone to sag, resulting in a decrease in alignment accuracy with the other layer of material (film or sheet material), and edge misalignment after film application. Utility Model Content

[0004] This invention provides an unwinding and film-applying device to solve the problems existing in the prior art.

[0005] The technical problem solved by this utility model is achieved by the following technical solution:

[0006] An unwinding and film-applying device includes a frame, two sets of tension adjustment mechanisms, and a film-applying mechanism. The frame is equipped with a sheet material receiving and discharging mechanism for conveying the sheet material to be applied and a film material receiving and discharging mechanism for conveying the film material to be applied onto the sheet material. One set of tension adjustment mechanisms is configured corresponding to the sheet material receiving and discharging mechanism, and the other set is configured corresponding to the film material receiving and discharging mechanism. Each set of tension adjustment mechanisms includes a tension force detection element and a tension adjustment element. The tension adjustment element is linked with the tension force detection element to adjust the tension of the corresponding sheet material or film material. The film-applying mechanism is located downstream of the tension adjustment mechanism and is used to apply the tension-adjusted film material to the sheet material.

[0007] Preferably, the tension adjustment mechanism further includes a controller, the frame is provided with a tension roller, the tension roller is connected to the tension force detection component, the tension adjustment component includes a tension roller and connecting rings movably sleeved at both ends of the tension roller, and the frame is also provided with a telescopic component with a movable end connected to the connecting rings for controlling the up and down movement of the tension roller.

[0008] Preferably, the tension roller is located at the upstream end of the tensioning roller.

[0009] Preferably, the film-applying mechanism includes two film-applying rollers rotatably connected to the frame, and the two film-applying rollers rotate in opposite directions via a transmission mechanism.

[0010] Preferably, the frame is also provided with multiple support rollers, which are arranged sequentially along the material feeding direction of the sheet to guide the sheet to the tension adjustment mechanism.

[0011] Preferably, a limiting plate is movably connected to the support roller, and a limiting member for limiting the position of the limiting plate is connected to the support roller.

[0012] The beneficial effects of this utility model are as follows: by setting two sets of tension adjustment mechanisms corresponding to the sheet material winding mechanism and the film material winding mechanism respectively, the uneven resistance of the sheet material and the film material during unwinding can be adjusted. When the tension of the sheet material or the film material is detected to be outside the set range, the tension adjustment component of the corresponding set can act in time to ensure that the tension of both is stable before entering the film application mechanism, thereby improving the film application bonding quality and reducing the occurrence of wrinkles, bubbles and other problems caused by tension issues. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the isometric structure provided by this utility model;

[0015] Figure 2 A cross-sectional structural schematic diagram provided for this utility model;

[0016] Figure 3 This is a partial structural schematic diagram of the present invention;

[0017] Figure 4 This is a schematic diagram of the tension adjustment component in this utility model.

[0018] In the diagram, 1 is the frame; 11 is the sheet material handling mechanism; 12 is the film material handling mechanism; 3 is the tension detection component; 31 is the tension roller; 4 is the tension adjustment component; 41 is the tension roller; 42 is the connecting ring; 43 is the telescopic component; 5 is the controller; 6 is the film-attaching roller; 7 is the transmission mechanism; 8 is the support roller; 81 is the limit plate; and 82 is the limit component. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0020] Reference Figures 1-4 As shown, an unwinding and film-applying device includes a frame 1. The frame 1 is equipped with a sheet material take-up and unwinding mechanism 11 for conveying sheet materials to be coated, and a film material take-up and unwinding mechanism 12 for conveying the film material to be coated onto the sheet materials. The sheet material take-up and unwinding mechanism 11 includes take-up and unwinding motors located at both ends of the frame 1. The output ends of both take-up and unwinding motors are connected to take-up and unwinding rollers rotatably connected to the frame 1. The take-up and unwinding roller at the upstream end is used to output the sheet material, and the take-up and unwinding roller at the downstream end is used to roll up the output and coated sheet material. The film material take-up and unwinding mechanism 12 can also be equipped with a take-up and unwinding motor driving the take-up and unwinding rollers to output the film material. Since the film material is directly attached to the sheet material, there is no need to additionally set up take-up and unwinding rollers for winding the film material. The frame 1 is also equipped with two sets of tension adjustment mechanisms, one set corresponding to the sheet material take-up and unwinding mechanism 11, and the other... Each tension adjustment mechanism is set up in relation to the membrane material take-up and undo mechanism 12. Each tension adjustment mechanism includes a tension force detection element 3 and a tension adjustment element 4. The tension adjustment element 4 is linked with the tension force detection element 3 to adjust the tension of the corresponding sheet or membrane material. Downstream of the tension adjustment mechanism, there is also a film attaching mechanism for attaching the tension-adjusted membrane material to the sheet. The two tension adjustment mechanisms are set up for the sheet and membrane material respectively. The tension force detection element 3 monitors the tension status of each material in real time. Once a deviation from the set range is detected, the tension adjustment element 4 will act in time to adjust it, ensuring that the sheet and membrane material maintain a stable tension before entering the film attaching mechanism. This effectively copes with the tension fluctuation caused by uneven resistance during unwinding. Combined with the pressing action of the film attaching mechanism, the membrane material can be attached tightly and flatly to the sheet, reducing defects such as wrinkles and bubbles.

[0021] Reference Figures 1-4As shown, the tension adjustment mechanism further includes a controller 5. A tension roller 31 is mounted on the frame 1, connected to the tension force detection element 3. The tension adjustment element 4 includes a tension roller 41 and connecting rings 42 movably sleeved at both ends of the tension roller 41. The frame 1 also has a telescopic element 43 with a movable end connected to the connecting rings 42 for controlling the up-and-down movement of the tension roller 41. The controller 5 is electrically connected to the tension force detection element 3 and the telescopic element 43. The tension force detection element 3 can be a commonly available tension sensor, while the telescopic element 43 can be driven by an electric telescopic rod or similar device to adjust the position of the tension roller 41 in the up-and-down direction. The tension roller 31 forms a force fulcrum in the material path of the sheet or film. When the material... As the material passes through the tension roller 31, the tension force detection component 3 acquires the tension force signal of the material in real time through the tension roller 31 and transmits it to the controller 5. The controller 5 compares the detected tension force with the preset value. If there is a deviation, it drives the telescopic component 43 to move. When the tension force is too large, the telescopic component 43 retracts and drives the tension roller 41 to move upward, reducing the wrap angle of the material on the tension roller 41 to reduce the tension. When the tension force is too small, the telescopic component 43 extends and drives the tension roller 41 to move downward, increasing the wrap angle of the material to increase the tension. Thus, the tension state of the material is corrected in real time by the up and down movement of the tension roller 41, ensuring that the tension of the sheet and the film is always stable within the set range before entering the film application mechanism, providing a guarantee for the subsequent bonding of the film and the sheet.

[0022] The tension roller 31 is located upstream of the tension roller 41. The tension roller 41 adjusts the wrap angle or stretch of the sheet or film material by changing its position, thereby changing the tension. The material first passes through the upstream tension roller 31, and the tension force detection component 3 obtains the original tension data. When the tension is abnormal, the downstream tension roller 41 changes the wrap angle of the material by moving up and down: when the tension is small, the wrap angle is increased to increase the tension, and when the tension is large, the wrap angle is decreased to reduce the tension. This layout makes the detection more accurate and the adjustment more direct, ensuring that the material can enter the film attachment mechanism with a stable tension.

[0023] Reference Figures 1-2 As shown, the film-applying mechanism further includes two film-applying rollers 6 rotatably connected to the frame 1, and the two film-applying rollers 6 rotate in opposite directions through a transmission mechanism 7. The transmission mechanism 7 may include gears disposed on the two film-applying rollers 6 and meshing with each other, and one end of one of the film-applying rollers 6 is driven to rotate by a drive motor. The two film-applying rollers 6 are arranged vertically opposite to each other, and achieve synchronous rotation in opposite directions through meshing gears. The drive motor drives one of the film-applying rollers 6 to rotate actively, while the other rotates passively with the meshing gears. The tension-adjusted plate and film material enter the space between the two rollers synchronously. With the help of the clamping force and friction generated by the reverse rotation, the film material is evenly pressed onto the surface of the plate to complete the film-applying operation, ensuring that the bonding process is continuous and the force is stable.

[0024] Reference Figure 3As shown, the frame 1 is further equipped with multiple support rollers 8, which are arranged sequentially along the material feeding direction of the sheet to guide the sheet to the tension adjustment mechanism. The support rollers 8 cooperate with the sheet guide rollers of the sheet feeding mechanism 11 and are arranged at intervals along the material feeding path. Their roller surfaces are in contact with the lower surface of the sheet, playing a supporting and guiding role. Through the support of the support rollers 8, the sheet is prevented from deviating from the feeding path due to its own weight, ensuring that the sheet is fed to the tension adjustment mechanism flat and stably, providing a stable foundation for subsequent tension force detection and adjustment.

[0025] The support roller 8 is movably connected to a limiting plate 81, and the support roller 8 is also connected to a limiting member 82 for limiting the position of the limiting plate 81. The limiting plate 81 is set along the axial direction of the support roller 8 and can slide on the roller surface to accommodate plates of different widths. When the plate is conveyed, the limiting plates 81 on both sides can constrain the plate from the lateral direction to prevent it from shifting to the left or right during the material feeding process. The limiting member 82 can be connected to the support roller 8 by means of fastening bolts or threads. After the limiting plate 81 is adjusted to the appropriate position, it is fixed to ensure that the limiting plate 81 is precisely aligned with the edge of the plate, further improving the stability of the plate conveying and avoiding deviations in subsequent tension adjustment or film application operations due to offset.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An unwinding film attaching apparatus characterized by comprising: include; The frame (1) is provided with a plate receiving and dispensing mechanism (11) for conveying the film plate to be attached and a film receiving and dispensing mechanism (12) for conveying the film to be attached onto the plate. Two sets of tension adjustment mechanisms are provided. One set of tension adjustment mechanisms is set in accordance with the sheet material take-up and take-down mechanism (11), and the other set of tension adjustment mechanisms is set in accordance with the membrane material take-up and take-down mechanism (12). Each set of tension adjustment mechanisms includes a tension force detection component (3) and a tension adjustment component (4). The tension adjustment component (4) is linked with the tension force detection component (3) to adjust the tension of the corresponding sheet material or membrane material. The film-attaching mechanism, located downstream of the tension adjustment mechanism, is used to attach the tension-adjusted film material to the sheet material.

2. The film unwinding and attaching apparatus according to claim 1, wherein The tension adjustment mechanism also includes a controller (5), and a tension roller (31) is provided on the frame (1). The tension roller (31) is connected to the tension force detection component (3). The tension adjustment component (4) includes a tension roller (41) and a connecting ring (42) movably sleeved on both ends of the tension roller (41). The frame (1) is also provided with a telescopic component (43) whose movable end is connected to the connecting ring (42) for controlling the up and down movement of the tension roller (41).

3. The unwinding and film-applying device according to claim 2, characterized in that, The tension roller (31) is located at the upstream end of the tensioning roller (41).

4. The unwinding and film-applying device according to claim 1, characterized in that, The film-applying mechanism includes two film-applying rollers (6) rotatably connected to the frame (1), and the two film-applying rollers (6) rotate in opposite directions through a transmission mechanism (7).

5. The unwinding and film-applying device according to claim 1, characterized in that, The frame (1) is also provided with multiple support rollers (8), which are arranged sequentially along the material feeding direction of the plate to guide the plate to the tension adjustment mechanism.

6. The unwinding and film-applying device according to claim 5, characterized in that, A limiting plate (81) is movably connected to the support roller (8), and a limiting member (82) for limiting the position of the limiting plate (81) is connected to the support roller (8).

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