Multi-layer laminating method and multi-layer laminating machine thereof

Abstract

Belongs to the technical field of plate lamination, and particularly relates to glass lamination of a photovoltaic module pvb film and large-batch production of building glass laminated glue. The device mainly comprises a lifter (1), a feeding stack (2), a multi-layer laminating machine (3), a multi-layer hot air circulation laminating machine (4), a cooling stack (5) and a discharging lifter (6), the multi-layer laminating machine (3) adopts a middle heating plate (3-3), exhausting and bonding of a to-be-laminated workpiece (7) are achieved through vacuum and heating, the whole laminating process is further completed through the multi-layer hot air circulation laminating machine (4), and the multi-layer hot air circulation laminating machine (4) is used for cooling the to-be-laminated workpiece (7). And the large-scale output capability is realized.

Description

Technical Field

[0001] This invention relates to a method for multi-layer lamination of sheet materials and a multi-layer laminator thereof, and particularly to a method for multi-layer lamination of glass sheets made of PVB / EVA / SGP / POE film and a multi-layer laminator thereof. Background Technology

[0002] PVB laminated glass production equipment currently adopts a three-step process both domestically and internationally: lamination in a constant temperature and humidity chamber, preheating and rolling to remove air, mounting and fixing, and hot pressing in a high-pressure autoclave. The entire production line has an electrical power of about 200KW and a factory area of ​​about 500M2. It operates under a high pressure of 1.2Mpa-1.4Mpa, which is highly dangerous, requires a large amount of manual labor, generates a lot of noise, and has high energy consumption.

[0003] EVA film laminated glass production equipment can complete the production process in one step, but the quality of EVA laminated glass cannot reach that of PVB laminated glass, and it cannot become a mainstream product. Secondly, the equipment cannot produce qualified PVB film laminated glass products.

[0004] Although patents CN200810017856.4 and 200810231854.5 solved the process problem of not using a high-pressure autoclave, the loading and unloading of glass is very troublesome, requires a lot of time and manpower, and the output per shift is low, which cannot meet the production needs.

[0005] Solar cell module laminators: 2-layer laminators are simple single-layer stacking machines with an equipment height of about 4 meters, which are costly; 4-6 layer laminators are even more expensive. Summary of the Invention

[0006] The technical problem to be solved by this invention is to provide a fast, automated, and low-cost multilayer lamination method and multilayer laminator, and to realize a multilayer laminator production line with 2-6 layers.

[0007] In order to solve the above technical problems, the present invention provides a multi-layer lamination method and a multi-layer laminator, comprising a lifting loading platform (1), a loading stack (2), a vacuum multi-layer laminator (3), a multi-layer hot air circulating laminator (4), a cooling stack (5), and a lifting unloading platform (6).

[0008] Step 1: The workpiece (7) to be laminated is simultaneously fed into the multi-layer laminator (3) via the lifting loading platform (1) and the loading stack (2);

[0009] Step 2, the multi-layer laminator (3) consists of an upper cover (3-1), a lower cover (3-2), one or more intermediate heating plates (3-3), a sealing frame (3-4), an electric heating tube (3-5), a connecting rod (3-6), a ejector pin (3-7), a notch rotating shaft (3-8), a rubber plate (3-9), a sealing strip (3-10), an upper circulating high-temperature cloth (3-11), and an upper circulating synchronous wheel (3-12);

[0010] Step 3: The workpiece (7) enters the multi-layer laminator (3), the top cover (3-1) falls down, and the ejector pin (3-7) rotates through the connecting rod (3-6) and the notch shaft (3-8) to lift the workpiece (7). The workpiece (7) is heated by the radiation heat from the top and bottom. At the same time, the upper cavity (13) and the lower cavity (14) are evacuated to remove the gas in the workpiece (7).

[0011] Step 4: The ejector pin (3-7) falls down, the upper cavity (13) is filled with air, the lower cavity (14) continues to be evacuated, the rubber plate (3-9) presses down on the workpiece (7) under isostatic pressure, and the workpiece (7) is heat-melted to form a sealing structure;

[0012] Step 5: After sealing the edges, the workpiece (7) enters the hot air circulating laminator (4) for further lamination, and then passes through the cooling stack (5) and the unloading elevator (6) to complete the lamination.

[0013] Specifically, the intermediate heating plate (3-3) of the multi-layer laminator (3) in step two is made of carbon steel plate with a thickness of 20-70mm, preferably 30mm. The side of the intermediate heating plate (3-3) has a long deep hole, into which the notch shaft (3-8) is inserted. The ejector pin (3-7) is above the notch. A hole is drilled on the upper surface of the intermediate heating plate (3-3) at the corresponding position of the notch of the notch shaft (3-8), and the ejector pin (3-7) is inserted. The notch shaft (3-8) is rotated at a certain angle, and the ejector pin (3-7) is on the upper surface of the intermediate heating plate (3-3), lifting or falling.

[0014] Step 2, the upper circulating high-temperature cloth (3-11) is driven to rotate by the friction of the rubber roller (3-15). The rubber roller (3-15) is connected to the transmission power roller (3-16) through the synchronous wheel (3-12) to ensure that the upper circulating high-temperature cloth (3-11) and the transmission power roller (3-16) have the same transmission speed. The sides of the notched rotating shaft (3-8) and the intermediate heating plate (3-3) are dynamically sealed by the sealing ring screws of the notched rotating shaft sealing block (3-17), or by welding, to ensure that there is no air leakage when vacuuming. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a multi-layer laminator production line;

[0016] Figure 2 This is a schematic diagram of the intermediate heating plate (3-8) of a multi-layer laminator;

[0017] 1-Elevator, 2-Feeding stack, 3-Multi-layer laminator, 4-Multi-layer hot air circulating laminator, 5-Cooling stack, 6-Unloading elevator, 7-Workpiece, 3-1-Upper cover, 3-2-Lower cover, 3-3-Intermediate heating plate, 3-4-Sealed frame, 3-5-Heating tube, 3-6-Connecting rod, 3-7-Ejector pin, 3-8-Notched shaft, 3-9-Rubber plate, 3-10-Sealing strip, 3-11-Upper circulating high-temperature cloth, 3-12-Upper circulating synchronous wheel, 3-13-Upper cavity, 3-14-Lower cavity, 3-15-Rubber roller, 3-16-Transmission power roller, 3-17-Notched shaft sealing block. Detailed Implementation

[0018] The following description, in conjunction with the accompanying drawings and preferred embodiments of the present invention, will provide further details.

[0019] Example 1

[0020] like Figure 1 As shown, taking the laminator for a PVB / EVA double-glass solar cell module as an example, the lifting loading platform (1) transfers the PVB / EVA double-glass module (7) to each layer of the loading stack (2). The module workpiece (7) on the multi-layer stack (2) enters the multi-layer laminator (3) simultaneously. The ejector pin (3-7) lifts the module workpiece (7) from the surface of the intermediate heating plate (3). The module workpiece (7) is heated by radiation from the top and bottom, and at the same time, the upper cavity (3-13) and the lower cavity (3-1) are heated. 4) Vacuuming is performed, and the gas in the component workpiece (7) is removed. When the workpiece (7) reaches a certain temperature, the ejector pin (3-7) falls down. At the same time, the upper cavity (3-13) is filled with atmosphere, and the lower cavity (3-14) continues to be evacuated. The workpiece (7) is subjected to isostatic pressure sealing to complete the first step of lamination. The workpiece (7) that has completed the first step of lamination enters the hot air circulation laminator at the same time. After a certain lifting and lamination, it enters the cooling stack (5) at the same time. After cooling, it is unloaded layer by layer by the unloading elevator (6) to complete the lamination.

Claims

1. A multi-layer lamination method and a multi-layer laminator thereof, comprising a lifting loading platform (1), a loading stack (2), a vacuum multi-layer laminator (3), a multi-layer hot air circulating laminator (4), a cooling stack (5), and a lifting unloading platform (6), characterized in that: 1). Step 1: The workpiece (7) to be laminated is simultaneously fed into the multi-layer laminator (3) via the lifting loading platform (1) and the loading stack (2); 2). Step 2, the multi-layer laminator (3) consists of an upper cover (3-1), a lower cover (3-2), one or more intermediate heating plates (3-3), a sealing frame (3-4), an electric heating tube (3-5), a connecting rod (3-6), a ejector pin (3-7), a notch rotating shaft (3-8), a rubber plate (3-9), a sealing strip (3-10), an upper circulating high-temperature cloth (3-11), and an upper circulating synchronous wheel (3-12). 3) Step 3, the workpiece (7) enters the multi-layer laminator (3), the upper cover (3-1) falls down, the ejector pin (3-7) rotates through the connecting rod (3-6) and the notch shaft (3-8) to lift the workpiece (7), the workpiece (7) is heated by the upper and lower radiant heat, at the same time, the upper cavity (13) and the lower cavity (14) are evacuated to remove the gas in the workpiece (7); 4) Step four, the ejector pin (3-7) falls down, the upper cavity (13) is filled with air, the lower cavity (14) continues to be evacuated, the rubber plate (3-9) isostatically presses down on the workpiece (7), the workpiece (7) is heat-melted with the rubber sheet to form a sealing structure; 5) Step five, the sealed workpiece (7) enters the hot air circulating laminator (4) for further lamination, and then passes through the cooling stack (5) and the unloading elevator (6) to complete the lamination.

2. The multilayer lamination method and multilayer laminator according to claim 1, characterized in that: In step two, the intermediate heating plate (3-3) of the multi-layer laminator (3) is made of carbon steel plate with a thickness of 20-70mm, preferably 30mm. The side of the intermediate heating plate (3-3) has a long deep hole, into which the notch shaft (3-8) is inserted. The ejector pin (3-7) is above the notch. A hole is drilled on the upper surface of the intermediate heating plate (3-3) at the corresponding position of the notch of the notch shaft (3-8), and the ejector pin (3-7) is inserted. The notch shaft (3-8) is rotated at a certain angle, and the ejector pin (3-7) is on the upper surface of the intermediate heating plate (3-3), lifting or falling.

3. The multilayer lamination method and multilayer laminator according to claim 1, characterized in that: Step 2, the upper circulating high-temperature cloth (3-11) is driven to rotate by the friction of the rubber roller (3-15). The rubber roller (3-15) is connected to the transmission power roller (3-16) through the synchronous wheel (3-12) to ensure that the upper circulating high-temperature cloth (3-11) and the transmission power roller (3-16) have the same transmission speed.

4. The multilayer lamination method and multilayer laminator according to claim 2, characterized in that: The sides of the notched rotating shaft (3-8) and the intermediate heating plate (3-3) are dynamically sealed by the sealing ring screws of the notched rotating shaft sealing block (3-17), or the sealing ring is dynamically sealed after welding.

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