A wet pressing device

Abstract

This utility model discloses a wet pressing device, relating to film laminating equipment, including a feeding section, a pressing section, and a discharging section. A water supply roller is installed in the feeding section; a film laminating machine and a hot press are provided in the pressing section; a pressing roller is installed in the hot press; and a water absorption roller is installed in the discharging section. A board pressing channel is provided between the water supply roller, the pressing roller, and the water absorption roller. The water supply roller is supplied with water from an external water source. A first water-collecting tray is located below the water supply roller, and a second water-collecting tray is located below the pressing roller. Both the first and second water-collecting trays are connected to a wastewater tank. This utility model uniformly coats and humidifies the PCB board surface with humidifiers, increasing the lamination strength and improving the product lamination yield.

Description

Technical Field

[0001] This utility model relates to film application equipment, and more specifically, to a wet pressing device. Background Technology

[0002] The PCB lamination process is a crucial step in firmly adhering dry film photoresist to the surface of the inner core board using a hot-pressing method, providing protection for subsequent circuit pattern transfer. During lamination, a dry film is first applied to the PCB substrate surface using a laminator, then transferred to a hot press where it is heat-pressed by lamination rollers to complete the lamination process. However, due to factors such as the board components, the dry film itself, or the precision of the equipment, some air bubbles may remain between the laminated board and the dry film. If these air bubbles cannot be removed during hot pressing, it will result in localized areas of insufficient adhesion between the hot-pressed dry film and the board, leading to a low yield rate. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a wet pressing device that addresses the shortcomings of the existing technology, increases the film bonding strength, and improves the product film bonding yield.

[0004] The wet pressing device of this utility model includes a feeding section, a pressing section, and a discharging section. A water supply roller is installed in the feeding section. A film applicator and a hot press are provided in the pressing section. A pressing roller is installed in the hot press. A water absorption roller is installed in the discharging section. A plate pressing channel is provided between the water supply roller, the pressing roller, and the water absorption roller. The water supply roller is supplied with water from an external water source. A first water-collecting tray is located below the water supply roller, and a second water-collecting tray is located below the pressing roller. Both the first and second water-collecting trays are connected to a wastewater tank.

[0005] Preferably, a drainage box is installed below the feeding section, and the drainage box is connected to the first water tray through a first pipe.

[0006] Preferably, a first vacuum generator is installed in the first pipe.

[0007] Preferably, a wastewater tank is installed below the membrane pressing section, the wastewater tank is connected to a second water tray through a second pipe, a second vacuum generator is installed in the second pipe, and a third pipe is provided between the wastewater tank and the drain box.

[0008] Preferably, a drain pump is installed in the wastewater tank, and a ball valve switch is installed in the wastewater tank, the ball valve switch being electrically connected to the drain pump.

[0009] Preferably, a flow control module is installed in the feeding section. The input end of the flow control module is connected to the plant's water source, and the output end of the flow control module supplies water to the water supply roller through a water supply pipe.

[0010] Preferably, both the water supply roller and the water suction roller are composed of an upper roller body and a lower roller body. The lower roller body is rotatably installed in the machine body of the corresponding material section, and the lower roller body is connected to the chain drive mechanism in the material section. The upper roller body is rotatably installed above the lower roller body through a quick-release structure.

[0011] Preferably, the quick-release structure includes two mounting blocks, both of which are installed in the machine body above the lower roller. Each mounting block has a mounting groove that extends upward and penetrates the mounting block to form an insertion guide structure. Bearings are installed at both ends of the upper roller, and the two bearings are inserted into the two mounting grooves one-to-one.

[0012] Preferably, a photoelectric switch facing the second water tray is installed in the body of the film pressing section.

[0013] Beneficial effects

[0014] The advantages of this utility model are:

[0015] 1. Compared with ordinary hot pressing, this utility model adds a wet pressing device, which evenly coats and moistens the rollers on the PCB board surface, increasing the film strength and improving the product film yield.

[0016] 2. The wastewater collection system, consisting of a drain box, wastewater tank, and water tray, effectively prevents wastewater overflow during wet pressing from affecting the normal operation of the equipment, thus improving the safety of the equipment.

[0017] 3. The upper rollers of the water supply rollers and water suction rollers are installed using a quick-release structure, which not only meets the requirements of water supply or suction, but also enables quick disassembly and assembly of the upper rollers, facilitating maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the wet pressing device of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the feeding section of this utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the pressing section of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the discharge section of this utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the roller of this utility model.

[0023] Wherein: 1-feeding section, 2-film pressing section, 3-discharge section, 4-water supply roller, 5-film pressing roller, 6-water suction roller, 7-first water holding tray, 8-first vacuum generator, 9-flow control module, 10-drainage box, 11-second water holding tray, 12-second vacuum generator, 13-wastewater tank, 14-upper roller body, 15-lower roller body, 16-mounting block, 17-mounting groove. Detailed Implementation

[0024] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0025] See Figures 1-5 This utility model discloses a wet pressing device, comprising an infeed section 1, a pressing section 2, and an outlet section 3. A water supply roller 4 is installed in the infeed section 1, a pressing roller 5 is installed in the pressing section 2, and a water absorption roller 6 is installed in the outlet section 3. A board pressing channel is provided between the water supply roller 4, the pressing roller 5, and the water absorption roller 6. The pressing section 2 includes a laminator and a hot press, with the pressing roller 5 being the hot pressing roller of the hot press. Specifically, the PCB substrate is driven by a conveyor and enters the board pressing channel from the infeed section 1. Water is applied to the PCB substrate by the water supply roller 4. The PCB substrate is then conveyed to the laminator for lamination. After lamination, the PCB substrate enters the pressing section 2, where it is hot-pressed by the pressing roller 5. Finally, it is conveyed to the outlet section 3, where the water absorption roller 6 removes excess water from the board surface. Compared to ordinary hot pressing, the addition of a wet pressing device evenly coats and moistens the PCB board surface with humidifiers, increasing the film bonding strength and improving the product bonding yield.

[0026] The more specific design of the wet pressing device is as follows:

[0027] Regarding the feeding section 1, the water supply roller 4 is supplied with water from an external water source. Specifically, a flow control module 9 is installed in the feeding section 1. The input end of the flow control module 9 is connected to the plant's water source, and the output end of the flow control module 9 supplies water to the water supply roller 4 through a water supply pipe. Through the application of the flow control module 9, the water supply flow can be accurately controlled to achieve precise water supply. A first water-collecting tray 7 is provided below the water supply roller 4 to catch wastewater that falls during the water supply of the PCB substrate. A drain box 10 is installed below the feeding section 1. The drain box 10 is connected to the first water-collecting tray 7 through a first pipe to collect the wastewater in the first water-collecting tray 7 and prevent the wastewater in the first water-collecting tray 7 from overflowing and spilling.

[0028] In the membrane pressing section 2, a second water-collecting tray 11 is located below the membrane pressing roller 5. Both the first water-collecting tray 7 and the second water-collecting tray 11 are connected to the wastewater tank 13, enabling wastewater collection. Furthermore, a third pipe is provided between the wastewater tank 13 and the drain box 10 for collecting all wastewater generated during the wet pressing process. To prevent the wastewater tank 13 from overflowing, a drain pump is installed in the wastewater tank 13, and a ball valve switch is installed in the wastewater tank 13, electrically connected to the drain pump. When the water level in the wastewater tank 13 reaches a level sufficient to trigger the ball valve switch, the ball valve switch opens, thereby connecting the drain pump to the power supply and draining the wastewater tank 13.

[0029] To ensure that the water in the basin flows smoothly into the tank, in this embodiment, a first vacuum generator 8 is installed in the first pipe; the wastewater tank 13 is connected to the second basin 11 via a second pipe, in which a second vacuum generator 12 is installed. The vacuum generator is used to generate negative pressure, so that the wastewater in the basin flows into the tank, further preventing the basin from overflowing.

[0030] In this embodiment, both the water supply roller 4 and the water suction roller 6 are composed of an upper roller body 14 and a lower roller body 15. The lower roller body 15 is rotatably installed in the machine body of the corresponding material section, and is connected to the chain drive mechanism in the material section. That is, the lower roller body 15 acts as the driving roller, providing power for the conveying of the PCB substrate. The upper roller body 14 of the water supply roller 4 and the water suction roller 6 is rotatably installed above the lower roller body 15 through a quick-release structure, mainly for the convenience of maintenance of the upper roller body 14.

[0031] Regarding the quick-release structure, it includes two mounting blocks 16, both of which are installed in the machine body above the lower roller 15. Each mounting block 16 has a mounting groove 17 that extends upwards and penetrates the mounting block 16 to form an insertion guide structure. Bearings are installed at both ends of the upper roller 14, and the two bearings are inserted into the two mounting grooves 17 one-to-one. Since the water supply roller 4 and the water suction roller 6 do not provide the pressure required for laminating the PCB substrate, even with a movable mounting method, the upper roller 14 not only satisfies the needs for water supply or suction but also allows for quick assembly and disassembly, facilitating maintenance.

[0032] In this embodiment, the roller bodies of both the water supply roller 4 and the water absorption roller 6 can be made of sponge rollers.

[0033] Preferably, a photoelectric switch facing the second water tray 11 is installed in the body of the film pressing section 2. The photoelectric switch used is model HP7-D23. When the water tray in the film pressing section 2 is removed, the signal received by the controller from the photoelectric switch changes, at which point the controller stops the equipment to ensure safe operation.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A wet pressing device, characterized in that, It includes a feeding section (1), a film pressing section (2), and a discharging section (3); a water supply roller (4) is installed in the feeding section (1), a film applicator and a hot press are provided in the film pressing section (2), a film pressing roller (5) is installed in the hot press, and a water absorption roller (6) is installed in the discharging section (3). A plate pressing channel is provided between the water supply roller (4), the film pressing roller (5), and the water absorption roller (6); the water supply roller (4) is supplied with water from an external water source, a first water holding tray (7) is provided below the water supply roller (4), a second water holding tray (11) is provided below the film pressing roller (5), and both the first water holding tray (7) and the second water holding tray (11) are connected to a wastewater tank (13).

2. The wet pressing device according to claim 1, characterized in that, A drain box (10) is installed below the feeding section (1), and the drain box (10) is connected to the first water tray (7) through a first pipe.

3. The wet pressing device according to claim 2, characterized in that, A first vacuum generator (8) is installed in the first pipe.

4. The wet pressing device according to claim 2, characterized in that, A wastewater tank (13) is installed below the membrane section (2). The wastewater tank (13) is connected to the second water tray (11) through a second pipe. A second vacuum generator (12) is installed in the second pipe. A third pipe is provided between the wastewater tank (13) and the drain box (10).

5. A wet pressing device according to claim 1 or 4, characterized in that, A drain pump is installed in the wastewater tank (13), and a ball valve switch is installed in the wastewater tank (13). The ball valve switch is electrically connected to the drain pump.

6. The wet pressing device according to claim 1, characterized in that, The feed section (1) is equipped with a flow control module (9). The input end of the flow control module (9) is connected to the plant water source, and the output end of the flow control module (9) supplies water to the water supply roller (4) through the water supply pipe.

7. A wet pressing device according to claim 1, characterized in that, The water supply roller (4) and the water suction roller (6) are both composed of an upper roller body (14) and a lower roller body (15). The lower roller body (15) is rotatably installed in the machine body of the corresponding material section, and the lower roller body (15) is connected to the chain drive mechanism in the material section. The upper roller body (14) is rotatably installed above the lower roller body (15) through a quick-release structure.

8. A wet pressing device according to claim 7, characterized in that, The quick-release structure includes two mounting blocks (16), both of which are installed in the machine body above the lower roller (15). The mounting blocks (16) have mounting grooves (17) that extend upward and penetrate the mounting blocks (16) to form an insertion guide structure. The upper roller (14) has bearings installed at both ends, and the two bearings are inserted into the two mounting grooves (17) in a corresponding manner.

9. A wet pressing device according to claim 1, characterized in that, The body of the pressing section (2) is equipped with a photoelectric switch facing the second water tray (11).

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