Coating device for EVA (Ethylene Vinyl Acetate) adhesive film

Abstract

The utility model relates to the technical field of coating devices, and discloses an EVA (Ethylene Vinyl Acetate) adhesive film coating device, which comprises a rack, a bracket is fixedly arranged at the top of the rack, a coating assembly is arranged at the top end of the rack, the coating assembly comprises a hydraulic cylinder, and the top of the rack is fixedly connected with a fixed end of the bottom end of the hydraulic cylinder. According to the coating device for the EVA adhesive film, in order to better coat and adapt to a workpiece with a straight or cambered outer wall, the coating assembly is arranged, when a hydraulic cylinder is started, a storage rack can drive a workpiece body to move up and down, when asynchronous motors on a top frame and a movable frame are started, a first transmission part operates, and the workpiece body is driven to move up and down; the movable block can be driven to move up and down in cooperation with the first sliding rail, so that the piston barrel slides up and down outside the bent pipe, EVA adhesive film materials are injected into the coating head at the bottom end of the piston barrel in cooperation with the feeding pipe, a workpiece body with the straight or cambered outer wall can be better coated, and the applicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of coating device technology, specifically to a coating device for EVA film. Background Technology

[0002] EVA film, as a thermosetting adhesive film, plays a crucial role in many fields. In the photovoltaic industry, it is used to encapsulate solar cells, firmly bonding the cells to the upper and lower protective materials, which is essential for improving the photoelectric conversion efficiency of the battery module and extending its service life.

[0003] Traditional EVA film coating equipment comes in various types, including roller coating, spray coating, and blade coating. Currently, various industries have raised higher requirements for the quality, efficiency, and cost of EVA film coating. In the photovoltaic industry, in order to improve the power generation efficiency of solar cells, more precise and uniform EVA film coating is required to reduce the performance differences of cells caused by uneven coating.

[0004] However, some existing coating devices cannot ensure that the EVA film is uniformly coated on the entire substrate surface. When coating large quantities of glass with EVA film in the construction industry, the low coating efficiency will lead to a longer production cycle, increased production costs, and reduced overall production efficiency. In addition, some existing coating devices have poor adaptability to substrates. Some coating devices can only be applied to substrates with flat outer walls, and it is difficult to effectively coat substrates with curved outer walls. The applicability needs to be improved. In view of this, we propose an EVA film coating device. Utility Model Content

[0005] The purpose of this invention is to provide an EVA film coating device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An EVA film coating apparatus includes a frame, a bracket fixedly mounted on the top of the frame, and a coating assembly disposed at the top of the frame. The coating assembly includes:

[0008] A hydraulic cylinder is fixedly connected to the bottom fixed end of the hydraulic cylinder at the top of the frame, and the top of the piston end of the hydraulic cylinder is fixedly connected to the center of the bottom of the shelf. A top frame is fixedly installed on the top of the bracket, and a movable frame is provided on the top frame.

[0009] An asynchronous motor is fixedly installed on the outer wall of the movable frame. The output shaft of the asynchronous motor is externally rotatably installed inside one end of the first transmission component. The other end of the first transmission component is drivenly installed on the movable frame. The first transmission component includes two transmission pulleys and a transmission belt. A movable block is fixedly installed on the outside of the transmission belt.

[0010] The first slide rail is fixedly installed on the side of the movable frame away from the asynchronous motor. The sliding component inside the first slide rail is fixedly installed on the outer wall of the movable block. A piston cylinder is fixedly installed inside the movable block. A bent tube is fixedly installed inside the movable frame. The piston cylinder is slidably installed inside one end of the bent tube through a sealed bearing. A coating head is provided at the bottom end of the piston cylinder. A feed pipe is fixedly installed at the other end of the bent tube. The feed pipe is a flexible hose, and the end of the feed pipe away from the bent tube is connected to the equipment for supplying EVA film material.

[0011] In a further embodiment, the support is provided in two sets, which are symmetrically arranged at both ends of the shelf, and the workpiece body is clamped onto the shelf.

[0012] In a further embodiment, the two transmission pulleys of the first transmission component are respectively fixedly installed on the outside of the output shaft of the asynchronous motor and the outside of the cylindrical protrusion of the moving frame.

[0013] In a further embodiment, multiple sets of piston cylinders, bends, and feed pipes are provided, and these multiple sets of piston cylinders, bends, and feed pipes are arranged in a linear array with equal spacing, thereby improving coating efficiency.

[0014] In a further embodiment, an auxiliary component is provided at the top of the support, the auxiliary component including an asynchronous motor. The asynchronous motor is fixedly installed on the outside of the top frame, and a rotating shaft is fixedly installed at the output end of the asynchronous motor. Both ends of the rotating shaft are rotatably installed on the top frame through bearing components. A second transmission component is installed between the rotating shaft and the top frame for transmission.

[0015] In a further embodiment, the second transmission component is provided in two sets, and each set of the second transmission component includes two transmission pulleys and a transmission belt, which is externally fixedly installed inside the mobile frame, making the mobile frame move more stably.

[0016] In a further embodiment, a second slide rail is fixedly installed on the top of the top frame, and the internal sliding element of the second slide rail is fixedly installed on the outer wall of the movable frame. Two sets of the second slide rail are provided, which makes the movement of the movable frame more stable.

[0017] Compared with the prior art, the present invention provides an EVA film coating device, which has the following beneficial effects:

[0018] 1. The EVA film coating device, in order to better coat and adapt to workpieces with straight or curved outer walls, is equipped with a coating component. When the hydraulic cylinder is activated, the shelf can move the workpiece body up and down. When the asynchronous motor on the top frame and the moving frame is activated, the first transmission component runs, which, in conjunction with the first slide rail, can drive the moving block to move up and down, so that the piston cylinder slides up and down outside the curved tube. In conjunction with the feed pipe, EVA film material is injected into the coating head at the bottom of the piston cylinder, thereby better coating the workpiece body with straight or curved outer walls and improving applicability.

[0019] 2. In order to improve the coating efficiency, the coating device for this EVA film is equipped with auxiliary components. When the asynchronous motor is started, the rotating shaft rotates, thereby causing the two sets of second transmission components to run synchronously, which drives the moving frame to move laterally better. In conjunction with the second slide rail, the moving frame moves more stably, thus avoiding unstable coating caused by manual movement and improving coating efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0022] Figure 3 This is a schematic diagram of part of the structure of this utility model;

[0023] Figure 4 This is a schematic diagram of a portion of the coating component of this utility model.

[0024] Explanation of icon numbers:

[0025] 1. Rack; 2. Support;

[0026] 3. Coating assembly; 31. Hydraulic cylinder; 32. Shelf; 33. Top frame; 34. Moving frame; 35. Asynchronous motor; 36. First transmission component; 37. Moving block; 38. First slide rail; 39. Piston cylinder; 310. Bend; 311. Feed pipe;

[0027] 4. Auxiliary components; 41. Asynchronous motor; 42. Rotating shaft; 43. Second transmission component; 44. Second slide rail. Detailed Implementation

[0028] 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.

[0029] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0030] Please see Figures 1-4 This utility model provides a technical solution:

[0031] An EVA film coating apparatus includes a frame 1, with a bracket 2 fixedly mounted on the top of the frame 1.

[0032] In one embodiment of this utility model, a coating component 3 is provided at the top of the frame 1. The coating component 3 includes a hydraulic cylinder 31. The bottom fixed end of the hydraulic cylinder 31 is fixedly connected to the top of the frame 1. The top of the piston end of the hydraulic cylinder 31 is fixedly connected to the center of the bottom of the shelf 32. In addition, two sets of brackets 2 are provided, and the two sets of brackets 2 are symmetrically arranged at both ends of the shelf 32. The workpiece body is clamped on the shelf 32. A top frame 33 is fixedly installed on the top of the bracket 2. A movable frame 34 is provided on the top frame 33. An asynchronous motor 35 is fixedly installed on the outer wall of the movable frame 34. The output shaft of the asynchronous motor 35 is externally rotatably installed inside one end of the first transmission member 36. The other end of the first transmission member 36 is driven and installed on the movable frame 34. The first transmission member 36 includes two transmission pulleys and a transmission belt. A movable block 37 is fixedly installed on the outside of the transmission belt. In addition, the two transmission pulleys of the first transmission member 36 are respectively fixed The piston cylinder 39 is fixedly installed outside the output shaft of the asynchronous motor 35 and outside the cylindrical protrusion of the movable frame 34. A first slide rail 38 is fixedly installed on the side of the movable frame 34 away from the asynchronous motor 35. The sliding part inside the first slide rail 38 is fixedly installed on the outer wall of the movable block 37. A piston cylinder 39 is fixedly installed inside the movable block 37. A bent tube 310 is fixedly installed inside the movable frame 34. The piston cylinder 39 is slidably installed inside one end of the bent tube 310 through a sealed bearing. A coating head is provided at the bottom end of the piston cylinder 39. A feed pipe 311 is fixedly installed at the other end of the bent tube 310. The feed pipe 311 is a flexible tube, and the end of the feed pipe 311 away from the bent tube 310 is connected to the equipment for supplying EVA film material. In addition, there are multiple sets of piston cylinders 39, bent tubes 310 and feed pipes 311, and multiple sets of piston cylinders 39, bent tubes 310 and feed pipes 311 are arranged in a linear array with equal spacing, thereby improving coating efficiency.

[0033] In this embodiment, when coating the workpiece, the hydraulic cylinder 31 is first activated, its piston end extends upward, driving the shelf 32 to move vertically upward. The bottom center of the shelf 32 is fixedly connected to the piston end of the hydraulic cylinder 31. At this time, the workpiece, which is held on the shelf 32, moves closer to the coating head. After the workpiece moves to the predetermined coating position, the asynchronous motor 35 on the top frame 33 and the moving frame 34 is activated. The output shaft of the asynchronous motor 35 rotates, driving the transmission pulley at one end of the first transmission component 36 to rotate through the shaft hole. The first transmission component 36 consists of two transmission pulleys and a transmission belt. The two transmission pulleys are fixedly installed outside the output shaft of the asynchronous motor 35 and outside the cylindrical protrusion of the moving frame 34, respectively. The transmission belt is tensioned between the two transmission pulleys. When the asynchronous motor 35 drives the active transmission pulley to rotate, the transmission belt drives the driven transmission pulley to rotate synchronously through friction. The moving block 37, fixed outside the transmission belt, rotates with the cyclic rotation of the transmission belt. The first slide rail 38 reciprocates up and down within the first slide rail 38, which is fixedly installed on the side of the movable frame 34 away from the asynchronous motor 35. Its internal sliding component is fixedly connected to the outer wall of the movable block 37, providing guidance for the movement of the movable block 37. The piston cylinder 39 fixed inside the movable block 37 is slidably connected to one end of the bent tube 310 through a sealed bearing. When the movable block 37 moves up and down, the piston cylinder 39 slides synchronously outside the bent tube 310. At the same time, the feed pipe 311 acts as a flexible hose, continuously injecting EVA film material from the feeding equipment into the bent tube 310. The material is then guided through the bent tube 310 to the coating head at the bottom of the piston cylinder 39. When the surface of the workpiece is convex, the coating head moves upward with the piston cylinder 39 to adapt to the curvature of the surface. When encountering a concave surface, the coating head moves downward to fill the concave area. When encountering a flat surface, the coating head remains stationary. Through the coordinated operation of multiple sets of equally spaced linear arrays of piston cylinders 39, bent tubes 310, and feed pipes 311, precise coating of workpieces with different surface morphologies is achieved.

[0034] In one embodiment of this utility model, an auxiliary component 4 is provided at the top of the bracket 2. The auxiliary component 4 includes an asynchronous motor 41. The asynchronous motor 41 is fixedly installed on the outside of the top frame 33. A rotating shaft 42 is fixedly installed at the output end of the asynchronous motor 41. Both ends of the rotating shaft 42 are rotatably installed on the top frame 33 through bearing components. A second transmission component 43 is installed between the rotating shaft 42 and the top frame 33. In addition, two sets of the second transmission component 43 are provided, and each set of the second transmission component 43 includes two transmission pulleys and a transmission belt. The transmission belt is fixedly installed inside the movable frame 34, making the movement of the movable frame 34 more stable. In addition, a second slide rail 44 is fixedly installed on the top of the top frame 33. The sliding component inside the second slide rail 44 is fixedly installed on the outer wall of the movable frame 34. Two sets of the second slide rail 44 are provided, making the movement of the movable frame 34 more stable.

[0035] In this embodiment, to improve overall coating efficiency, the asynchronous motor 41 in the auxiliary component 4 is activated. Its output shaft 42, fixed at one end, rotates on the top frame 33 via bearings at both ends. Two sets of second transmission components 43 are arranged between the shaft 42 and the top frame 33. Each set of second transmission components 43 consists of two pulleys and a transmission belt. The pulleys are respectively installed at fixed positions on the shaft 42 and the top frame 33. The transmission belt is externally and internally fixedly connected to the movable frame 34. When the asynchronous motor 41 drives the shaft 42 to rotate, the transmission belts of the two sets of second transmission components 43 rotate synchronously. Through the fixed connection between the transmission belts and the movable frame 34, the movable frame 34 is driven to move laterally. The two sets of second slide rails 44 fixed to the top of the top frame 33 are fixedly connected to the outer wall of the moving frame 34 with their internal sliding parts, providing stable support and guidance for the lateral movement of the moving frame 34. Under the drive of the second transmission component 43 and the constraint of the second slide rails 44, the moving frame 34 achieves uniform and stable lateral displacement, avoiding problems such as uneven coating thickness and discontinuous coating caused by uneven force or deviation of movement trajectory during manual operation. Through the coordinated work of the asynchronous motor 41, the rotating shaft 42, the second transmission component 43 and the second slide rails 44, the moving frame 34 drives the coating component 3 to move along the preset trajectory, which significantly improves the coating efficiency and coating quality of the EVA film.

[0036] All electrical components mentioned in this application are electrically connected to the controller and 220V AC mains power. The controller is a conventional and known device that can control the hydraulic cylinder 31, the asynchronous motor 35, and the asynchronous motor 41. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts, and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.

[0037] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An EVA film coating apparatus, comprising a frame (1), wherein a bracket (2) is fixedly mounted on the top of the frame (1), characterized in that: The top of the frame (1) is provided with a coating assembly (3), the coating assembly (3) comprising: Hydraulic cylinder (31), the bottom fixed end of the hydraulic cylinder (31) is fixedly connected to the top of the frame (1), the bottom center of the shelf (32) is fixedly connected to the top of the piston end of the hydraulic cylinder (31), the top of the bracket (2) is fixedly installed with a top frame (33), and a movable frame (34) is provided on the top frame (33). An asynchronous motor (35) is fixedly installed on the outer wall of the movable frame (34). The output shaft of the asynchronous motor (35) is externally rotatably installed inside one end of the first transmission member (36). The other end of the first transmission member (36) is driven and installed on the movable frame (34). The first transmission member (36) includes two transmission pulleys and a transmission belt. A movable block (37) is fixedly installed on the outside of the transmission belt. The first slide rail (38) is fixedly installed on the side of the moving frame (34) away from the asynchronous motor (35). The sliding part inside the first slide rail (38) is fixedly installed on the outer wall of the moving block (37). The piston cylinder (39) is fixedly installed inside the moving block (37). The bent tube (310) is fixedly installed inside the moving frame (34). The piston cylinder (39) is slidably installed inside one end of the bent tube (310) through a sealed bearing. A coating head is provided at the bottom end of the piston cylinder (39). A feed pipe (311) is fixedly installed at the other end of the bent tube (310). The feed pipe (311) is a flexible hose, and the end of the feed pipe (311) away from the bent tube (310) is connected to the equipment for supplying EVA film material.

2. The EVA film coating apparatus according to claim 1, characterized in that: The bracket (2) is provided in two sets, and the two sets of brackets (2) are symmetrically arranged at both ends of the shelf (32). The workpiece body is clamped on the shelf (32).

3. The EVA film coating apparatus according to claim 1, characterized in that: The two transmission pulleys of the first transmission component (36) are respectively fixedly installed on the outside of the output shaft of the asynchronous motor (35) and the outside of the cylindrical protrusion of the moving frame (34).

4. The EVA film coating apparatus according to claim 1, characterized in that: The piston cylinder (39), the bend (310) and the feed pipe (311) are provided in multiple sets, and the multiple sets of the piston cylinder (39), the bend (310) and the feed pipe (311) are arranged in a linear array with equal spacing.

5. The EVA film coating apparatus according to claim 1, characterized in that: An auxiliary component (4) is provided at the top of the bracket (2). The auxiliary component (4) includes an asynchronous motor (41). An asynchronous motor (41) is fixedly installed on the outside of the top frame (33). A rotating shaft (42) is fixedly installed at the output end of the asynchronous motor (41). Both ends of the rotating shaft (42) are rotatably installed on the top frame (33) through bearing components. A second transmission component (43) is installed between the rotating shaft (42) and the top frame (33).

6. The EVA film coating apparatus according to claim 5, characterized in that: The second transmission component (43) is provided in two sets, and each set of the second transmission component (43) includes two transmission pulleys and a transmission belt, which is externally fixedly installed inside the movable frame (34).

7. The EVA film coating apparatus according to claim 6, characterized in that: The top of the top frame (33) is fixedly installed with a second slide rail (44), and the internal sliding parts of the second slide rail (44) are fixedly installed on the outer wall of the movable frame (34). The second slide rail (44) is provided with two sets.

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