Planar air-floating film laminating device

Abstract

The present invention provides a planar air-floating film laminating device, which includes an upper die body and a lower die body. An air source access hole is provided on the outer surface of the upper die body and / or the lower die body. A multi-stage shunt air passage is arranged inside the upper die body and / or the lower die body. A series of air blowing holes are evenly arranged on the inner surface of the upper die body and / or the lower die body. The multi-stage shunt air passage connects the air source access hole and the air blowing holes. The area where the air blowing holes are located forms a floating laminating area. On the left and right sides, a cylinder and a cylinder connection support block are correspondingly arranged on the upper die body and the lower die body respectively. The piston rod of the cylinder is connected to the cylinder connection support block, and the upper die body and the lower die body are opened or closed by the expansion and contraction of the piston rod of the cylinder. Gap adjusting gaskets are arranged in the areas on the left and right sides of the floating laminating area between the upper die body and the lower die body. The present invention enables the film and the coating liquid to be shaped in a surface contact manner, which can effectively improve the shaping time, ensure the coating thickness and uniformity during the film laminating process, and guarantee the laminating accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of film laminating, and in particular to a planar air suspension film laminating device. Background Art

[0002] Film lamination (compounding) refers to a polymer material formed by laminating (compounding) two or more layers of films made of different materials. Its finished products have been widely used in various industries, such as the electronics industry, packaging industry, etc. In order to laminate (compound) two film substrates, a coating liquid needs to be coated between the two film substrates to achieve the lamination (compounding) of the two film substrates, thereby making a film finished product with special functions.

[0003] However, traditional on-line coating production line lamination (compounding) devices use two upper and lower or two left and right and multiple groups of pressure rollers for lamination (compounding). Each group of pressure rollers usually consists of two steel rollers or one steel roller and one rubber roller and two rubber rollers. The longer the steel roller is, the more difficult it is to control its precision. The best straightness of foreign steel rollers can only be guaranteed at 2μm - 3μm at most, and the best straightness of rubber rollers can only be guaranteed at 20μm - 30μm at most. Moreover, the manufacturing cycle is long and the price is expensive. Although the precision of this traditional lamination device is already very high, for products with higher precision requirements, it cannot meet the requirements. Due to the difficulty in controlling the precision of the coating liquid thickness, it is easy to have too much or too little coating liquid. Too much coating liquid, especially colored coating liquid, is easy to cause irregular patterns through roll pressing. If the coating liquid is too little, air bubbles cannot be discharged, which will affect the quality of the composite film finished product and even cause damage to the functions of the composite film.

[0004] Currently, the overall structure is as Figure 1 shown, including a slot coating die head a, a coating back roller b, a passive roller c, a lamination fixed roller d, a lamination pressure roller e, a lower film f, a coating liquid g, an upper film h, and a finished product die i. The lower film f on the coating back roller b and the upper film h on the passive roller c are respectively connected to the unwind device, and the composite film coming out of the finished product die i is connected to the winding device. The slot coating die head a extrudes the coating liquid g onto the upper surface of the lower film f, and together with the upper film h, it enters the lamination fixed roller d and the lamination pressure roller e for line contact extrusion lamination. The upper film h and the lower film f are laminated together after line contact extrusion, and finally become a composite finished product through the finished product die i and are wound onto the winding device.

[0005] The suspended nanoparticle dimming film coats a layer of nanoparticle coating liquid between two conductive film substrates to achieve the lamination of the two conductive film substrates, thereby making a composite film finished product. The coating liquid is composed of a nano liquid and controllable nanorods. Since the coating liquid has color and no solvent participates, it makes the nanoparticle coating liquid difficult to disperse, with high viscosity and low surface adhesion, making it extremely difficult to control the lamination precision. Summary of the Invention

[0006] In view of the above problems, the present invention aims to provide a planar air suspension film laminating device, which improves the current line contact lamination to surface contact lamination, can effectively improve the shaping time, ensure the coating thickness during the film lamination process, and improve the lamination accuracy.

[0007] The technical solution of the present invention is a planar air suspension film laminating device, including an upper die body and a lower die body. The outer surface of the upper die body and / or the lower die body is provided with a gas source access hole. A multi-stage shunt air duct is arranged inside the upper die body and / or the lower die body. A series of air blowing holes are evenly arranged on the inner surface of the upper die body and / or the lower die body. The multi-stage shunt air duct connects the gas source access hole and the air blowing holes. The area where the air blowing holes are located forms a suspension lamination area. On the left and right sides, the upper die body and the lower die body are respectively provided with a cylinder and a cylinder connection support block. The piston rod of the cylinder is connected to the cylinder connection support block, and the upper die body and the lower die body are opened or closed by the expansion and contraction of the piston rod of the cylinder. Gap adjusting gaskets are arranged in the areas on the left and right sides of the suspension lamination area between the upper die body and the lower die body.

[0008] Preferably, the density of the air blowing holes is ≥ 8 meshes.

[0009] Preferably, the multi-stage shunt air duct includes a first-stage shunt flow channel, a second-stage shunt flow channel, and a third-stage shunt flow channel. The gas source access hole is located in the middle position of the outer surface of the upper die body and / or the lower die body. The tail end of the first-stage shunt flow channel is connected to the gas source access hole. The front end of the first-stage shunt flow channel is shunted to the left and right and connected to the tail ends of the second-stage shunt flow channels. The front ends of the second-stage shunt flow channels are shunted to the left and right and connected to the tail ends of the third-stage shunt flow channels. The third-stage shunt flow channel is shunted forward and backward and also shunted to the left and right. After shunting, it is connected downward to the air blowing holes. A series of air blowing holes form a rectangular suspension lamination area.

[0010] Preferably, a micrometer for measuring the gap between the upper die body and the lower die body is arranged between the upper die body and the lower die body. The micrometer is connected to the upper die body through a micrometer fixing block. A micrometer top block in contact with the measuring head of the micrometer is connected to the lower die body. A fixed seat is arranged at the bottom of the lower die body.

[0011] Preferably, the thickness of the gap adjusting gasket is 8 μm - 10 μm larger than the thickness of the finished film; so that the distance between the lower surface of the upper die body and the upper surface of the lower die body in the suspension lamination area is 8 μm - 10 μm larger than the thickness of the finished film.

[0012] Preferably, wear-resistant layers are arranged on the lower surface of the upper die body and the upper surface of the lower die body in the suspension lamination area, and the flatness of the wear-resistant layer reaches 1 μm.

[0013] The planar suspension laminating device adopted by the present invention enables the film and the coating liquid to be shaped in a surface contact manner, which can effectively improve the shaping time, ensure the coating thickness and uniformity during the film laminating process, and guarantee the laminating accuracy. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of an existing on-line coating film laminating process;

[0015] Figure 2 is a schematic structural diagram of the present invention;

[0016] Figure 3 is Figure 2 a side view showing the internal shunt air channels;

[0017] Figure 4 is a schematic structural diagram of the present invention applied to an on-line coating film laminating process;

[0018] Wherein: a - slot coating die head; b - coating back roller; c - passive roller; d - laminating fixed roller; e - laminating pressure roller; f - lower film; g - coating liquid; h - upper film; i - finished product die; 1 - upper die body; 2 - lower die body; 3 - air source access hole; 4 - multi-stage shunt air channel; 41 - primary shunt flow channel; 42 - secondary shunt flow channel; 43 - tertiary shunt flow channel; 5 - air blowing hole; 6 - suspension laminating area; 7 - cylinder; 8 - cylinder connection support block; 9 - gap adjustment gasket; 10 - dial indicator; 11 - dial indicator fixing block; 12 - dial indicator top block; 13 - fixing seat; J - planar suspension laminating device. Detailed Embodiment

[0019] The present invention will be further described in detail below with reference to the drawings.

[0020] As Figure 2 and Figure 3 shown, the present invention provides a planar air suspension film laminating device, including an upper die body 1 and a lower die body 2. An air source access hole 3 is provided on the outer surface of the upper die body 1 and / or the lower die body 2. A multi-stage shunt air channel 4 is provided inside the upper die body 1 and / or the lower die body 2. A series of air blowing holes 5 are evenly provided on the inner surface of the upper die body 1 and / or the lower die body 2. The multi-stage shunt air channel 4 connects the air source access hole 3 and the air blowing holes 5. The area where the air blowing holes 5 are located forms a suspension laminating area 6. The upper die body 1 and the lower die body 2 are respectively provided with a cylinder 7 and a cylinder connection support block 8 on the left and right sides. The piston rod of the cylinder 7 is connected to the cylinder connection support block 8, and the upper die body 1 and the lower die body 2 are opened or closed by the telescopic movement of the piston rod of the cylinder 7. A gap adjustment gasket 9 is provided between the upper die body 1 and the lower die body 2 in the areas on the left and right sides of the suspension laminating area 6.

[0021] Among them, the density of the air blowing holes 5 ≥ 8 meshes.

[0022] Specifically, the multi-stage shunt air channel 4 includes a primary shunt channel 41, a secondary shunt channel 42, and a tertiary shunt channel 43. The air source access hole 3 is located in the middle position of the outer surface of the upper die body 1 and / or the lower die body 2. The tail end of the primary shunt channel 41 is connected to the air source access hole 3. The front end of the primary shunt channel 41 is shunted to the left and right to be connected to the tail ends of the secondary shunt channels 42. The front ends of the secondary shunt channels 42 are shunted to the left and right to be connected to the tail ends of the tertiary shunt channels 43. The tertiary shunt channels 43 are shunted forward and backward and also shunted to the left and right. After shunting, they are connected downward to the air blowing holes 5. A series of air blowing holes 5 form a rectangular floating laminating area 6.

[0023] Specifically, a micrometer 10 for measuring the gap between the upper die body 1 and the lower die body 2 is arranged between the upper die body 1 and the lower die body 2. The micrometer 10 is connected to the upper die body 1 through a micrometer fixing block 11. A micrometer top block 12 that contacts and positions the probe of the micrometer 10 is connected to the lower die body 2. A fixing seat 13 is arranged at the bottom of the lower die body 2.

[0024] Among them, the thickness of the gap adjusting gasket 9 is 8 μm - 10 μm larger than the thickness of the finished film; so that the distance between the lower surface of the upper die body 1 and the upper surface of the lower die body 2 in the floating laminating area 6 is 8 μm - 10 μm larger than the thickness of the finished film. Under the blowing action of both the upper die body 1 and the lower die body 2, when the upper and lower two-layer films and the intermediate coating liquid enter the upper die body 1 and the lower die body 2, they will be effectively laminated together. The laminating plane is covered with air blowing holes 5, so that the laminated films and the adhesive are suspended between the upper die body 1 and the lower die body 2, which can effectively level the adhesive and discharge the excess bubbles in the adhesive. Even if the adhesive is colored, there will be no streaks. Because the gap between the upper die body 1 and the lower die body 2 is larger than the finished film and an anti-abrasion layer is coated on the surface, the surface of the film will not be scratched.

[0025] Furthermore, an anti-abrasion layer is arranged on the lower surface of the upper die body 1 and the upper surface of the lower die body 2 in the floating laminating area 6. The flatness of the plane of this anti-abrasion layer reaches 1 μm. Since it is a plane, it is easy to process, and the precision control is simpler compared to a roller.

[0026] In addition, the function of the fixed seat 13 is to install and connect to the on-line coating equipment. In the device, the cylinders 7 are installed on both sides of the upper die body 1. The cylinders are connected to the support blocks 8 and installed on the lower die body 2. By adjusting the switch valves of the cylinders 7, the upper die body 1 can be quickly opened or closed. When the upper die body 1 is opened, it is convenient for on-line film threading. When it is closed, it is used for floating lamination. Gap adjustment gaskets 9 are installed on both sides of the upper die body 1 and the lower die body 2. The thickness of the gap adjustment gaskets 9 should be greater than the thickness of the finished film, which is 8μm - 10μm. The thickness of the gaskets can be checked by the dial indicator 10 in the device. Since there are gap adjustment gaskets 9 between the upper die body 1 and the lower die body 2, the lamination surfaces of the upper die body 1 and the lower die body 2 do not come into direct contact with each other up and down. The blowing systems of the upper die body 1 and the lower die body 2 are also controlled separately. It can be that the upper die body 1 blows air alone, the lower die body 2 blows air alone, or the upper die body 1 and the lower die body 2 blow air simultaneously.

[0027] During the working state, as Figure 4 shown, it includes a slot coating die head a, a coating back roll b, a passive roll c, a planar floating lamination device j, a lower film f, a coating liquid g, an upper film h, and a finished product die i. The lower film f on the coating back roll b and the upper film h on the passive roll c are respectively connected to the unwinding device. The composite film coming out of the finished product die i is connected to the winding device. The slot coating die head a extrudes the coating liquid g onto the upper surface of the lower film f, and together with the upper film h, it enters the planar floating lamination device j for surface contact extrusion lamination. During the lamination process inside the planar floating lamination device j, it can be that the upper die body 1 blows air alone, the lower die body 2 blows air alone, or the upper die body 1 and the lower die body 2 blow air simultaneously. After the upper film h and the lower film f are in on-line contact extrusion, they are laminated together and finally become a composite finished product through the finished product die i and are wound onto the winding device.

[0028] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the invention. Any simple modification, equivalent change, or decoration made to the above embodiments based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A planar air suspension film laminating device, characterized in that: It includes an upper die body (1) and a lower die body (2). An air source access hole (3) is provided on the outer surface of the upper die body (1) and / or the lower die body (2). A multi-stage shunt air channel (4) is provided inside the upper die body (1) and / or the lower die body (2). A series of air blowing holes (5) are evenly arranged on the inner surface of the upper die body (1) and / or the lower die body (2). The multi-stage shunt air channel (4) connects the air source access hole (3) and the air blowing holes (5). The area where the air blowing holes (5) are located forms a suspension laminating area (6). On the left and right sides, a cylinder (7) and a cylinder connection support block (8) are respectively provided corresponding to the upper die body (1) and the lower die body (2). The piston rod of the cylinder (7) is connected to the cylinder connection support block (8), and the upper die body (1) and the lower die body (2) are opened or closed by the expansion and contraction of the piston rod of the cylinder (7). Gap adjustment gaskets (9) are provided in the areas on the left and right sides of the suspension laminating area (6) between the upper die body (1) and the lower die body (2); The multi-stage shunt air channel (4) includes a first-stage shunt channel (41), a second-stage shunt channel (42), and a third-stage shunt channel (43). The air source access hole (3) is located in the middle position of the outer surface of the upper die body (1) and / or the lower die body (2). The tail end of the first-stage shunt channel (41) is connected to the air source access hole (3). The front end of the first-stage shunt channel (41) is shunted to the left and right and connected to the tail ends of the second-stage shunt channels (42). The front ends of the second-stage shunt channels (42) are shunted to the left and right and connected to the tail ends of the third-stage shunt channels (43). While the third-stage shunt channel (43) is shunted forward and backward, it is also shunted to the left and right, and after shunting, it is connected downward to the air blowing holes (5). A series of air blowing holes (5) are combined to form a rectangular suspension laminating area (6); A dial indicator (10) for measuring the gap between the upper die body (1) and the lower die body (2) is provided between the upper die body (1) and the lower die body (2). The dial indicator (10) is connected to the upper die body (1) through a dial indicator fixing block (11). A dial indicator top block (12) that contacts and positions the probe of the dial indicator (10) is connected to the lower die body (2). A fixing seat (13) is provided at the bottom of the lower die body (2).

2. The planar air suspension film laminating device according to claim 1, characterized in that: The density of the air blowing holes (5) is ≥ 8 meshes.

3. The planar air suspension film laminating device according to claim 1, characterized in that: The thickness of the gap adjustment gasket (9) is 8 μm - 10 μm larger than the thickness of the finished film; so that the distance between the lower surface of the upper die body (1) and the upper surface of the lower die body (2) in the suspension laminating area (6) is 8 μm - 10 μm larger than the thickness of the finished film.

4. The planar air suspension film laminating device according to claim 1, characterized in that: Anti-wear layers are provided on the lower surface of the upper die body (1) and the upper surface of the lower die body (2) in the suspension laminating area (6), and the planar straightness of the anti-wear layer reaches 1 μm.

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