Aluminum sheet film coating device

Abstract

This utility model provides a film coating device for aluminum plates, including a frame, a conveying roller assembly, a drive unit, a film unwinding mechanism, a pressure roller, and a synchronous following pressing assembly. The synchronous following pressing assembly includes a pressure plate, a drive mechanism, and a pair of synchronous following pressing mechanisms. Each synchronous following pressing mechanism includes a pressing cylinder and a slide. The pressing cylinder is vertically fixed on the slide. The opposite ends of the pressure plate are respectively fixedly connected to the piston rods of the pair of pressing cylinders. During the initial unwinding of the film, a portion of the film is manually pulled out and pressed against the front side of the upper surface of the aluminum plate. The synchronous following pressing assembly slides to the front side of the aluminum plate, so that the pressure plate presses against the portion of the film on the front side of the upper surface of the aluminum plate. The synchronous following pressing assembly synchronously follows the aluminum plate forward along the frame. The pressure plate always maintains pressure on the portion of the film on the front side of the upper surface of the aluminum plate, and the portion of the film on the front side of the upper surface of the aluminum plate will not shift due to the tensile force generated by the subsequent unwinding of the film.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum plate production equipment, specifically to an aluminum plate coating device. Background Technology

[0002] Aluminum sheets are very susceptible to surface damage during production, transportation, storage, processing, and installation. Therefore, applying a coating (usually a temporary plastic protective film) to the surface of aluminum sheets is a key measure to protect the surface quality of aluminum sheets.

[0003] In the existing technology, the coating of aluminum plate surface usually includes two methods: dry coating and wet coating. Since wet coating is less efficient, dry coating is the most commonly used. The dry coating process generally includes: cleaning the aluminum plate surface - unwinding the film - applying pressure with rollers - trimming excess film material at the edges. In the above coating process, the inner side of the film is coated with pressure-sensitive adhesive, and the film is pressed and adhered to the upper surface of the aluminum plate by the pressure rollers.

[0004] However, during the unwinding process described above, the film is only partially adhered to the surface of the aluminum plate in the initial stage. As the film is unwound, it exerts a certain pulling force on the film already adhered to the surface of the aluminum plate. As the aluminum plate is conveyed, the surface of the aluminum plate with the film already adhered to loses the downward pressure of the pressure roller. At the same time, because the adhesion area and time of the film on the surface of the aluminum plate are small at this time, the adhesion force is limited. Therefore, the film already adhered to the front side of the aluminum plate will shift. This is especially true for aluminum plates with larger transverse dimensions, where the film adhered to the front side is more prone to shifting. The shifting of the film on the front side of the aluminum plate will cause the surface of the aluminum plate in this area to lose the temporary protection of the film, making it easy to get scratches and affecting the surface quality and aesthetics of the aluminum plate. Utility Model Content

[0005] In view of the defects existing in the prior art, the purpose of this utility model is to provide an aluminum plate coating device to solve the problem that the film initially applied to the aluminum plate has a small adhesion area and short time, which causes the film to shift during the subsequent unwinding process due to the tensile force.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This application provides a coating apparatus for aluminum plates, including a frame, a conveyor roller assembly, a drive unit, a film unwinding mechanism, a pressure roller, and a synchronous following pressing assembly. The conveyor roller assembly is rotatably mounted on the upper surface of the frame along its length. The drive unit is connected to the conveyor roller assembly. The pressure roller is mounted laterally on the frame and is used to press and adhere the film unwound by the film unwinding mechanism onto the upper surface of the aluminum plate. The synchronous following pressing assembly includes a pressure plate, a drive mechanism, and a pair of synchronous following pressing mechanisms. Each synchronous following pressing mechanism includes a pressing cylinder and a slide. The slide is slidably mounted on the upper surface of the frame away from the film unwinding mechanism. The pressing cylinder is vertically fixedly mounted on the slide. The opposite ends of the pressure plate are respectively fixedly connected to the piston rods of the pair of pressing cylinders. The drive mechanism is connected to the slide and is used to drive the slide to move synchronously following the aluminum plate.

[0008] Furthermore, it also includes a film cutting assembly, which includes an upper fixed cutter, a lower movable cutter, and a drive cylinder. The upper fixed cutter is fixedly installed on the frame above the conveyor roller assembly and near the front side of the pressure roller. The lower movable cutter is located below the frame and directly opposite the upper fixed cutter. The drive cylinder is connected to the lower movable cutter and is used to drive the lower movable cutter to move vertically up and down. The lower movable cutter cooperates with the upper fixed cutter to cut the film.

[0009] Furthermore, it also includes a pair of side plates, a pair of lifting seats, and a pair of lifting cylinders. The pair of side plates are respectively fixedly installed on the upper end face of the side away from the synchronous following pressing assembly on the frame. The film unwinding mechanism and the pressure roller are installed between the pair of side plates. The pair of lifting seats are respectively vertically slidably installed on the pair of side plates. The opposite ends of the pressure roller are respectively rotatably installed on the pair of lifting seats. The pair of lifting cylinders are respectively fixedly installed on the pair of side plates. The piston rods of the pair of lifting cylinders are respectively fixedly connected to the pair of lifting seats.

[0010] Furthermore, the film unwinding mechanism includes an unwinding roller, a first support roller, and a second support roller. The opposite ends of the unwinding roller are rotatably mounted on a pair of side plates, and the first support roller and the second support roller are rotatably mounted on the side plates in sequence along the film conveying direction.

[0011] Furthermore, an air blowing rod is horizontally installed on the outer edge of the aluminum plate input end of the frame. The air blowing rod is located above the conveying roller assembly. The lower part of the air blowing rod has a plurality of oblique air blowing holes spaced apart along its axial direction. The air blowing direction of the oblique air blowing holes is obliquely downward toward the plate input end on the frame. The inner cavity of the air blowing rod has an air supply channel that communicates with the oblique air blowing holes. The air supply channel is connected to an external air source. Beneficial effects

[0012] This embodiment employs the aforementioned aluminum plate coating device, utilizing a reciprocating synchronous following pressing assembly mounted on the frame. During the initial unwinding of the film, a portion of the film is manually pulled out and pressed against the front side of the upper surface of the aluminum plate. The synchronous following pressing assembly then slides to the front position of the aluminum plate, causing the pressure plate to press against the portion of the film on the front side of the upper surface of the aluminum plate. The synchronous following pressing assembly moves forward along the frame synchronously with the aluminum plate, and the pressure plate always maintains pressure on the portion of the film on the front side of the upper surface of the aluminum plate. The portion of the film on the front side of the upper surface of the aluminum plate will not shift due to the tensile force generated by the subsequent unwinding of the film, thereby ensuring the bonding effect of the portion of the film on the front side of the upper surface of the aluminum plate. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the aluminum plate coating device in the embodiments of this application.

[0014] Figure 2 This is a schematic diagram of the structure in which the synchronous following pressing component in this application presses the film on the aluminum plate in the conveying state.

[0015] Figure 3 This is a schematic diagram of the structural state of the synchronous following pressing component in the embodiments of this application, where the component moves synchronously with the aluminum plate to another position.

[0016] Figure 4 This is a top view of the aluminum plate coating device in the embodiments of this application.

[0017] Figure 5 for Figure 4 A schematic diagram of the AA-direction cross-section structure.

[0018] Figure 6 This is a three-dimensional structural diagram of the aluminum plate coating device in the embodiments of this application from another angle.

[0019] Figure 7 This is a schematic diagram of the installation structure of the film cutting assembly on the frame in the embodiments of this application.

[0020] Figure 8 for Figure 6A magnified schematic diagram of the structure at point B in the diagram.

[0021] Figure 9 for Figure 7 A magnified schematic diagram of the structure at point C.

[0022] In the picture:

[0023] 100 - Coating device;

[0024] 200-film;

[0025] 10-Rack;

[0026] 11-Inflator;

[0027] 12-Angled air inlet;

[0028] 20-Side panel;

[0029] 30 - Film unwinding mechanism; 31 - Unwinding roller; 32 - First support roller; 33 - Second support roller;

[0030] 41-Lifting seat; 42-Lifting cylinder;

[0031] 50 - Conveyor roller assembly;

[0032] 60 - Synchronous following clamping assembly; 61 - Pressure plate; 62 - Synchronous following clamping mechanism; 621 - Slide; 622 - Clamping cylinder;

[0033] 70-Film cutting assembly; 71-Drive cylinder; 72-Lower movable cutter; 73-Upper fixed cutter;

[0034] 80 - Pressure roller. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] See appendix Figure 1 To be continued Figure 5 As shown, this embodiment provides a film coating device 100 for aluminum plates, including a frame 10, a conveying roller assembly 50, a drive unit, a film unwinding mechanism 30, a pressure roller 80, and a synchronous following pressing assembly 60.

[0037] The conveyor roller assembly 50 is mounted on the upper end face of the frame 10. The drive unit is connected to the conveyor roller assembly 50 and is used to provide rotational power to the conveyor roller assembly 50. The conveyor roller assembly 50 includes a plurality of conveyor rollers arranged at uniform intervals. The plurality of conveyor rollers are arranged at intervals along the length direction of the frame 10. Since the rotation and installation of the conveyor rollers are existing technologies, they will not be described in detail here.

[0038] See attached document Figure 3and attached Figure 5 As shown, in this embodiment, the film unwinding mechanism 30 is installed on the aluminum plate input end of the frame 10. For ease of description, the end of the frame 10 where the plate is input is referred to as the plate input end of the frame 10, and the opposite end of the frame 10 is the aluminum plate output end, referred to as the plate output end.

[0039] Continue to refer to the appendix Figure 3 and attached Figure 5 As shown, side plates 20 are respectively installed on opposite sides of the sheet metal input end on the frame 10, and the side plates 20 extend vertically upward from the upper end face of the frame 10. A film unwinding mechanism 30 is installed between the pair of side plates 20, and the film unwinding mechanism 30 is used for unwinding the film 200. Specifically, the film unwinding mechanism 30 includes an unwinding roller 31, a first support roller 32, and a second support roller 33. The opposite ends of the unwinding roller 31 are rotatably mounted on the pair of side plates 20, and the unwinding roller 31 is installed in the upper region of the pair of side plates 20. The first support roller 32 and the second support roller 33 are rotatably mounted on the pair of side plates 20 in sequence along the film conveying direction.

[0040] See attached document Figure 5 As shown, when the film 200 installed on the unwinding roller 31 is unwound, one end of the film 200 enters the upper surface of the first support roller 32. After being supported and tensioned by the first support roller 32, it enters the lower surface of the second support roller 33. After being pressed and tensioned by the second support roller 33, the film 200 enters the upper surface of the aluminum plate. Under the pressure of the pressure roller 80, the film 200 adheres to the outer surface of the aluminum plate.

[0041] See attached document Figure 5 As shown, in this embodiment, the pressure roller 80 is vertically and slidably mounted on the side plate 20 via a provided lifting seat 41. That is, a vertical sliding connection is formed between the lifting seat 41 and the side plate 20, for example, a slide rail and a slide groove are provided between them. A lifting cylinder 42 is fixedly mounted above the lifting seat 41, and the lifting cylinder 42 is used to drive the lifting seat 41 to move up and down. The opposite ends of the pressure roller 80 are rotatably mounted on a pair of lifting seats 41, and one end of the pressure roller 80 is connected to a drive motor (not shown in the figure), which is used to drive the pressure roller 80 to rotate.

[0042] By mounting the pressure roller 80 on the adjustable lifting seat 41, the height difference between the pressure roller 80 and the aluminum plate can be adjusted by changing the installation height of the lifting seat 41. This allows for the pressing of films of different thicknesses and improves the versatility of the pressure roller 80.

[0043] See attached document Figure 2 To be continued Figure 7As shown, in this embodiment, the synchronous following clamping assembly 60 includes a pressure plate 61, a drive mechanism, and a pair of synchronous following clamping mechanisms 62. Each synchronous following clamping mechanism 62 includes a clamping cylinder 622 and a slide 621. The slide 621 is slidably mounted on the upper end face of the frame 10 at the plate output end. The clamping cylinder 622 is vertically fixedly mounted on the slide 621. The opposite ends of the pressure plate 61 are respectively fixedly connected to the piston rods of the pair of clamping cylinders 622. The drive mechanism is connected to the slide 621 and is used to drive the slide 621 to move synchronously following the aluminum plate. The drive mechanism can be a ball screw or a cylinder to ensure that the moving speed of the slide 621 is consistent with that of the aluminum plate.

[0044] See attached document Figure 2 and attached Figure 3 As shown, in this embodiment, when the film 200 is initially unwound, a portion of the film 200 is first pulled out and pressed tightly against the upper surface of the aluminum plate. The aluminum plate begins to move forward through the conveyor roller assembly 50, and simultaneously slides to the front position of the aluminum plate along with the pressing assembly 60, so that the pressure plate 61 presses against the portion of the film 200 on the front side of the upper surface of the aluminum plate. Simultaneously, the pressing assembly 60 follows the aluminum plate forward along the frame 10. The pressure plate 61 always maintains pressure on the portion of the film 200 on the front side of the upper surface of the aluminum plate. At the same time, the pressure roller 80 presses and adheres the subsequently unwound film 200. The portion of the film 200 on the front side of the upper surface of the aluminum plate will not shift due to the pulling force generated by the subsequent unwinding of the film 200, thereby ensuring the adhesion effect of the portion of the film 200 on the front side of the upper surface of the aluminum plate.

[0045] See attached document Figure 5 Appendix Figure 7 and attached Figure 9 As shown, a film cutting assembly 70 is also provided on the frame 10 near the upstream position of the pressure roller 80. The film cutting assembly 70 is used to cut the film after the aluminum plate has been coated.

[0046] Specifically, the film cutting assembly 70 includes an upper fixed cutter 73, a lower movable cutter 72, and a drive cylinder 71. The upper fixed cutter 73 is fixedly mounted on the frame 10, located above the conveyor roller assembly 50 and near the front of the pressure roller 80. The lower movable cutter 72 is located below the frame 10 and directly opposite the upper fixed cutter 73. The drive cylinder 71 is connected to the lower movable cutter 72 and is used to drive the lower movable cutter 72 to move vertically up and down. The lower movable cutter 72 cooperates with the upper fixed cutter 73 to cut the film. It can be understood that the lower movable cutter 72 is arranged at the gap between a pair of conveyor rollers, so that the upper movable cutter can move upward smoothly without interference with the conveyor rollers (see attached diagram). Figure 9(As shown). In addition, it is understood that the cutting action of the upper movable cutter can be realized by a position detection sensor installed on the frame 10. That is, when the position detection sensor detects that the aluminum plate is completed, the position detection sensor sends a signal to the controller, and the controller controls the drive cylinder 71 to move. Since the control coordination between the position detection sensor and the cylinder is existing technology, it will not be described in detail here.

[0047] The film cutting component 70 allows the film to be automatically cut in a timely manner after the aluminum plate has been coated, which helps to improve the efficiency of aluminum plate coating.

[0048] See attached document Figure 6 and attached Figure 8 As shown, in this embodiment, in order to improve the bonding effect of the film on the aluminum plate, an air blowing rod 11 is also installed laterally at the outer edge of the plate input end on the frame 10. The air blowing rod 11 is located above the conveying roller assembly 50. The lower part of the air blowing rod 11 is provided with a plurality of oblique air blowing holes 12 at intervals along its axial direction. The air blowing direction of the oblique air blowing holes 12 is obliquely downward toward the plate input end on the frame 10, that is, the airflow direction of the oblique air blowing holes 12 is toward the outer side of the plate input end on the frame 10. The inner cavity of the air blowing rod 11 is provided with an air supply channel that communicates with the oblique air blowing holes 12. One end of the air supply channel is closed, and the other end of the air supply channel is connected to an external air source.

[0049] By providing an air blower 11, as the aluminum plate is conveyed forward through the conveyor roller assembly 50, the airflow from the angled air holes 12 on the air blower 11 can blow away debris adhering to the upper surface of the aluminum plate to the outer side of the aluminum plate, preventing the debris from following the aluminum plate into the subsequent film lamination process. As the plate continues to be conveyed, when the plate is fully inside the frame 10, the debris blown to the outer side of the upper surface of the aluminum plate loses the support of the aluminum plate and falls off from the outer edge of the aluminum plate under the action of the airflow from the angled air holes 12, thus achieving the purpose of cleaning the debris remaining on the aluminum plate.

[0050] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A coating device for aluminum plates, characterized in that, The device includes a frame, a conveyor roller assembly, a drive unit, a film unwinding mechanism, a pressure roller, and a synchronous following pressing assembly. The conveyor roller assembly is rotatably mounted on the upper surface of the frame along its length. The drive unit is connected to the conveyor roller assembly. The pressure roller is mounted laterally on the frame and is used to press the film unwound by the film unwinding mechanism onto the upper surface of an aluminum plate. The synchronous following pressing assembly includes a pressure plate, a drive mechanism, and a pair of synchronous following pressing mechanisms. Each synchronous following pressing mechanism includes a pressing cylinder and a slide. The slide is slidably mounted on the upper surface of the frame away from the film unwinding mechanism. The pressing cylinder is vertically fixedly mounted on the slide. The opposite ends of the pressure plate are respectively fixedly connected to the piston rods of the pair of pressing cylinders. The drive mechanism is connected to the slide and is used to drive the slide to move synchronously following the aluminum plate.

2. The coating apparatus for aluminum plates according to claim 1, characterized in that, It also includes a film cutting assembly, which includes an upper fixed cutter, a lower movable cutter, and a drive cylinder. The upper fixed cutter is fixedly installed on the frame at a position above the conveyor roller assembly and near the front side of the pressure roller. The lower movable cutter is located below the frame and directly opposite the upper fixed cutter. The drive cylinder is connected to the lower movable cutter and is used to drive the lower movable cutter to move vertically up and down. The lower movable cutter cooperates with the upper fixed cutter to cut the film.

3. A coating apparatus for aluminum plates according to claim 1 or 2, characterized in that, It also includes a pair of side plates, a pair of lifting seats, and a pair of lifting cylinders. The pair of side plates are respectively fixedly installed on the upper end face of the side away from the synchronous following pressing assembly on the frame. The film unwinding mechanism and the pressure roller are installed between the pair of side plates. The pair of lifting seats are respectively vertically slidably installed on the pair of side plates. The opposite ends of the pressure roller are respectively rotatably installed on the pair of lifting seats. The pair of lifting cylinders are respectively fixedly installed on the pair of side plates. The piston rods of the pair of lifting cylinders are respectively fixedly connected to the pair of lifting seats.

4. The coating apparatus for aluminum plates according to claim 3, characterized in that, The film unwinding mechanism includes an unwinding roller, a first support roller, and a second support roller. The opposite ends of the unwinding roller are rotatably mounted on a pair of side plates. The first support roller and the second support roller are rotatably mounted on the side plates in sequence along the film conveying direction.

5. The coating apparatus for aluminum plates according to claim 1, characterized in that, An air blowing rod is also horizontally installed on the outer edge of the aluminum plate input end of the frame. The air blowing rod is located above the conveying roller assembly. The lower part of the air blowing rod has a plurality of oblique air blowing holes spaced apart along its axial direction. The air blowing direction of the oblique air blowing holes is obliquely downward toward the plate input end on the frame. The inner cavity of the air blowing rod has an air supply channel that communicates with the oblique air blowing holes. The air supply channel is connected to an external air source.

Images