Drying device for washed PCBs on VCP production line

Abstract

The utility model relates to the technical field of drying devices, in particular to a drying device for a washed printed circuit board (PCB) on a VCP production line, which comprises a drying box body and a heating assembly arranged on the drying box body, a storage rack used for storing PCBs is arranged between the rotating discs, and clamping devices used for fixing the storage rack are installed between the rotating discs and the storage rack. According to the PCB drying device, the rotatable rotating discs are arranged at the top and the bottom of the interior of the drying box, the storage racks for storing PCBs are arranged between the rotating discs, the PCBs are vertically inserted into the limiting grooves of the storage racks, the PCBs are prevented from being stacked to affect drying, the PCBs rotate along with the rotating discs, water drops on the PCBs can be thrown out under the action of centrifugal force, and the drying effect of the PCBs is improved. And redundant water is removed in advance, so that the subsequent drying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a PCB board drying device after water washing in a VCP production line. Background Technology

[0002] During the manufacturing process of printed circuit boards (PCBs), contaminants such as flux, adhesive residue, dust, and debris are generated. If these contaminants are not effectively removed, they can lead to increased resistance and leakage on the PCB, causing PCB failure and affecting product lifespan. Therefore, PCBs must undergo cleaning and drying. The traditional method involves directly placing the PCB into a drying oven, but this uneven temperature distribution—higher near the heater and lower further away—can cause the PCB to crack and become damaged. Chinese patent CN215951986U discloses a PCB drying device after washing in a VCP production line. This device includes a main chamber with side chambers on both sides for ventilation, and side openings on the sides of the side chambers. The interior of the main chamber is divided into four parts in a cross shape, with a cleaning tank at one end and a drying tank at the other. Air boxes are fixedly connected inside the side chambers, and ventilation openings are located on the outer sides of the air boxes, connecting to the side openings. Air guide boxes are also fixedly connected to the side chambers, and a fan is installed inside the air boxes, with one side of the fan communicating with the air box. This patent utilizes a fan to blow heated air into the drying chamber, causing the moisture on the PCB board to evaporate and achieving rapid drying. Although existing patents use fans to deliver hot air into the drying chamber, they still have design and implementation flaws, such as uneven hot air distribution, excessive residual moisture on the PCB board, and excessively long drying times. Utility Model Content

[0003] This invention aims to provide a PCB board drying device after washing in a VCP production line. The device features rotatable discs at the top and bottom of the drying chamber, with storage racks for the PCB boards positioned between the discs. The PCB boards are vertically inserted into the limiting slots of the storage racks to prevent stacking and ensure effective drying. The rotation of the discs causes the PCB boards to rotate, causing water droplets to be flung out under centrifugal force, thus removing excess moisture and improving drying efficiency.

[0004] To address the existing technical problems, this utility model provides a PCB board drying device after water washing in a VCP production line, including a drying chamber body and a heating component disposed on the drying chamber body. The top and bottom of the drying chamber body are provided with rotating disks for rotating the PCB boards. A storage rack for storing the PCB boards is disposed between the rotating disks. A clamping device for fixing the storage rack is installed between the rotating disks and the storage rack. A rotation drive component is fixed at the center of the bottom of the drying chamber body. The output end of the rotation drive component passes through the drying chamber body and connects to the rotating disk at the bottom of the drying chamber body.

[0005] Preferably, the storage rack has at least two cavities for storing PCB boards, and the cavities of the storage rack are provided with a plurality of limiting grooves for storing PCB boards.

[0006] Preferably, the storage rack is provided with a baffle along the PCB board insertion direction to prevent the PCB board from slipping off, and the baffle is fixed to the storage rack by magnetic adsorption.

[0007] Preferably, the heating assembly includes a heater fixed to the back of the drying chamber body, the heater having a plurality of heating tubes for heating air inside, and a temperature sensor for detecting temperature installed inside the heater.

[0008] Preferably, the heating assembly includes several air inlets installed on the side of the drying chamber body, and an air supply pipe is connected between the air inlets and the heater. One end of the air supply pipe is connected to the air inlet, and the other end of the air supply pipe is connected to the heater. A fan for airflow is installed in the air inlet.

[0009] Preferably, the clamping device includes a retainer fixed on a rotating disk, a pressure plate rotatably mounted on the retainer via a shaft, one end of the pressure plate pressing against the rotating disk, and the bottom of the other end of the pressure plate being inclined, a guide rail fixed inside the bottom of the pressure plate, a moving block slidably mounted on the guide rail, and a threaded rod rotatably mounted on the retainer, the threaded rod being threadedly connected to the retainer, and one end of the threaded rod being movably connected to the moving block.

[0010] Preferably, the top of the drying chamber body is provided with several air outlets for discharging water vapor.

[0011] Preferably, the bottom of the drying oven body is provided with a drain pipe for draining water, and a valve for controlling the draining is fixed on the drain pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the PCB board drying device after water washing in this VCP production line has a reasonable structure and the following advantages:

[0013] (1) The present application has a rotating disk at the top and bottom of the drying oven body. The rotating disk is also equipped with a storage rack for storing PCB boards. The storage rack has several limiting grooves. The PCB boards are vertically inserted into the limiting grooves. Adjacent PCB boards have a certain space. When the rotating disk rotates, the storage rack will rotate with the limiting grooves. The water droplets on the limiting grooves are thrown out under the action of centrifugal force, which removes excess water in advance and improves the subsequent drying efficiency.

[0014] (2) Since this application uses a rotating disk to rotate the PCB board, in order to prevent the PCB board from flying out during rotation, a baffle is also provided on the outside of the storage rack. The baffle is fixed to the storage rack by magnetic adsorption, thereby blocking the PCB and preventing the PCB board from flying out.

[0015] (3) This application also has a clamping device installed between the rotating disk and the storage rack. When the storage rack needs to be removed, it is only necessary to rotate the threaded rod to move the moving block. At this time, the pressure plate will loosen and the storage rack can be removed for cleaning or to replace different models to meet the needs of different sized PCB boards. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a PCB board drying device after water washing in a VCP production line.

[0017] Figure 2 This is a three-dimensional structural diagram of the internal structure of a PCB board drying device after water washing in a VCP production line.

[0018] Figure 3 This is a three-dimensional structural diagram of the heating component of a PCB board drying device after water washing in a VCP production line.

[0019] Figure 4 This is a three-dimensional structural diagram of the clamping device of a PCB board drying device after water washing in a VCP production line.

[0020] Figure 5 This is a cross-sectional structural diagram of the clamping device of a PCB board drying device after water washing in a VCP production line.

[0021] Figure 6 This is a schematic diagram of a storage rack structure for a PCB board drying device after water washing in a VCP production line.

[0022] The following are the labels in the diagram: 1. Drying oven body; 11. Heating component; 111. Heater; 112. Air supply duct; 113. Air inlet; 114. Fan; 12. Rotary disc; 121. Rotation drive component; 13. Storage rack; 131. Baffle; 132. Limiting groove; 14. Clamping device; 141. Fixer; 142. Pressure plate; 143. Threaded rod; 144. Moving block; 145. Guide rail; 2. Air outlet; 3. Drain pipe. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-6As shown, this utility model provides a PCB board drying device after washing in a VCP production line, including a drying chamber body 1 and a heating component 11 disposed on the drying chamber body 1. The heating component 11 is a key component in the drying device, used to provide the heat required for drying. Through the heating action of the heating component 11, the internal temperature of the drying chamber body 1 is increased, thereby achieving the purpose of drying the PCB board. The heating component 11 can adopt various methods such as resistance heating and hot air circulation heating. Resistance heating generates heat by passing current through a resistance wire; hot air circulation heating uses a fan to circulate heated air inside the drying chamber to improve heating efficiency and uniformity. The drying oven body 1 has rotating disks 12 at the top and bottom for rotating PCB boards. A storage rack 13 for storing PCB boards is positioned between the rotating disks 12. A clamping device 14 for securing the storage rack 13 is installed between the rotating disks 12 and the storage rack 13. A rotation drive 121 is fixed at the center of the bottom of the drying oven body 1. The output end of the rotation drive 121 passes through the drying oven body 1 and connects to the rotating disks 12 at the bottom of the drying oven body 1. The rotating disks 12 support the storage rack 13 and drive the storage rack 13 and the PCB boards on it to rotate inside the drying oven body 1. This rotation ensures more uniform heating of the PCB boards and improves drying efficiency.

[0025] When the rotating disc 12 rotates, the storage rack 13 will rotate along with the limiting groove 132. The water droplets on the limiting groove 132 will be thrown out under the action of centrifugal force, removing excess water in advance, thereby improving the subsequent drying efficiency.

[0026] The storage rack 13 has at least two cavities for storing PCB boards, making full use of the internal space of the drying oven body 1 and improving drying efficiency. Furthermore, the multi-layer design allows for the simultaneous drying of more PCB boards, increasing production efficiency. The cavities of the storage rack 13 are specifically designed for storing PCB boards. The shape and size of the cavities are typically matched to the shape and size of the PCB boards to ensure they are securely placed within the cavities. There may be gaps between the cavities to facilitate airflow and improve drying performance. Several positioning grooves 132 are provided within the cavities of the storage rack 13 for storing PCB boards. The positioning grooves 132 position and fix the PCB boards, preventing them from shifting or falling during the drying process due to vibration or wind. The shape and size of the positioning grooves 132 are typically matched to the edges of the PCB boards to ensure they fit snugly within the grooves.

[0027] The storage rack 13 is equipped with a baffle 131 along the PCB board insertion direction to prevent the PCB board from slipping. The baffle 131 is fixed to the storage rack 13 by magnetic adsorption. The magnetic adsorption method for fixing the baffle 131 has several advantages. First, it simplifies the installation and disassembly process, reducing operational difficulty and time costs. Second, the magnetic adsorption method ensures the baffle 131's firmness on the storage rack 13, avoiding safety hazards caused by loosening. Finally, the magnetic adsorption method also allows the baffle 131 to be quickly replaced or adjusted when needed.

[0028] To prevent the PCB board from flying out during rotation, a baffle 131 is installed on the outside of the storage rack 13. This baffle 131 is fixed by magnetic attraction, effectively blocking the PCB board and preventing it from flying out. The heating assembly 11 includes a heater 111 fixed to the back of the drying oven body 1. The heater 111 contains several heating tubes for heating the air. A temperature sensor is also installed inside the heater 111 to detect the temperature. The temperature sensor can monitor the temperature inside the heater 111 in real time and transmit the temperature signal to the control system. Based on the feedback from the temperature sensor, the control system precisely adjusts the power of the heating tubes to ensure that the temperature inside the drying oven is maintained within the set range.

[0029] The heating assembly 11 includes several air inlets 113 installed on the side of the drying chamber body 1. An air supply pipe 112 is connected between the air inlets 113 and the heater 111. One end of the air supply pipe 112 is connected to the air inlet 113, and the other end of the air supply pipe 112 is connected to the heater 111. A fan 114 for air circulation is installed in the air inlet 113.

[0030] During the drying process, the fan 114 starts and generates suction, drawing heated air into the drying chamber 1 through the air inlet 113. This air exchanges heat with the PCB boards stored on the storage rack 13. After absorbing heat, the moisture on the surface of the PCB boards begins to evaporate and turn into water vapor. This water vapor is discharged from the outside of the drying chamber 1 along with the airflow inside the drying chamber 1, thus achieving rapid drying of the PCB boards.

[0031] The clamping device 14 includes a retainer 141 fixed on the rotating disk 12. A pressure plate 142 is rotatably mounted on the retainer 141 via a shaft. One end of the pressure plate 142 presses against the rotating disk 12, and the bottom of the other end of the pressure plate 142 is set as an inclined surface. A guide rail 145 is fixed to the bottom inside the pressure plate 142. A moving block 144 is slidably mounted on the guide rail 145. A threaded rod 143 is rotatably mounted on the retainer 141. The threaded rod 143 is threadedly connected to the retainer 141, and one end of the threaded rod 143 is movably connected to the moving block 144.

[0032] When using the clamping device 14, first place the storage rack 13 containing the PCB board on the rotating disk 12, rotate the threaded rod 143 to drive the moving block 144 to move towards the storage rack 13 on the guide rail 145 until the other end of the pressure plate 142 is firmly pressed against the storage rack 13. At this time, the clamping device 14 has firmly fixed the storage rack 13 on the rotating disk 12.

[0033] In use, by rotating the threaded rod 143, the moving block 144 is moved, at which point the pressure plate 142 will loosen, and the storage rack 13 can be removed for cleaning or replacement with different models to meet the needs of PCB boards of different sizes.

[0034] The top of the drying oven body 1 is provided with several air outlets 2 for discharging water vapor, and the bottom of the drying oven body 1 is provided with a drain pipe 3 for draining water. A valve for controlling the drainage is also fixed on the drain pipe 3.

[0035] Working principle: In use, the storage rack 13 is placed on the rotating disk 12, and then the threaded rod 143 is rotated. The threaded rod 143 drives the moving block 144 to move until it contacts the inclined surface of the pressure plate 142, thereby fixing the pressure plate 142 on the storage rack 13. Then, the PCB board is inserted into the limiting groove 132. Then, the baffle 131 is attracted to the storage rack 13 to protect the PCB board and prevent it from being thrown out. Then, by activating the rotating drive 121, the rotating disk 12 is rotated, thereby rotating the storage rack 13, which causes water droplets on the PCB board to be thrown out, removing excess moisture in advance. Then, the air is heated by the heating tube in the heater 111, and then the fan 114 is activated to draw the hot air into the drying chamber body 1, so that the moisture on the PCB board evaporates quickly, improving drying efficiency.

[0036] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A VCP production line after washing PCB board drying device, characterized in that: The utility model relates to a drying oven, including drying oven body (1) and set up on drying oven body (1) heating assembly (11), drying oven body (1) inside top and bottom are provided with for PCB board rotation rotating disc (12), be provided with for depositing PCB board depositing rack (13) between rotating disc (12), be installed for the clamping device (14) of depositing rack (13) between rotating disc (12) and depositing rack (13) are fixed, the center position of drying oven body (1) bottom is fixed with rotating drive part (121), and the output end of rotating drive part (121) passes through drying oven body (1) and is connected with the rotating disc (12) of drying oven body (1) inside bottom, depositing rack (13) at least have two layers for the cavity of depositing PCB board, depositing rack (13) is provided with a plurality of for depositing PCB board limit slot (132) in the cavity, depositing rack (13) is provided with the baffle (131) for blocking PCB board slide in PCB board insertion direction, and the baffle (131) is fixed on depositing rack (13) in the mode of magnetic adsorption, the clamping device (14) includes the fixator (141) of fixed rotating disc (12), and the pressboard (142) is rotatably arranged on the fixator (141), one end of pressboard (142) is pressed on rotating disc (12), and the other end bottom of pressboard (142) is provided as inclined plane, the bottom of the inside of pressboard (142) is fixed with guide rail (145), and the moving block (144) is slidably arranged on guide rail (145), the threaded rod (143) is rotatably arranged on the fixator (141), and the threaded rod (143) is connected with the fixator (141) through thread, and one end of threaded rod (143) is movably connected with moving block (144), the bottom of drying oven body (1) is provided with drain pipe (3) for draining, and the valve for controlling drainage is further fixed on drain pipe (3).

2. The VCP production line PCB board drying device after washing according to claim 1, characterized in that: The heating assembly (11) includes a heater (111) fixed to the back of the drying oven body (1), and a plurality of heating pipes for heating air are arranged in the heater (111).

3. The VCP production line PCB board drying device after washing according to claim 2, characterized in that: The heating assembly (11) includes a plurality of air inlets (113) installed on the side of the drying oven body (1), an air supply pipe (112) connected between the air inlet (113) and the heater (111) for air supply, one end of the air supply pipe (112) is connected with the air inlet (113), and the other end of the air supply pipe (112) is connected with the heater (111).

4. The VCP production line PCB board drying device after washing according to claim 1, characterized in that: The top of the drying oven body (1) is provided with a plurality of air outlets (2) for discharging water vapor. The utility model relates to a drying oven, including drying oven body (1) and set up on drying oven body (1) heating assembly (11), drying oven body (1) inside top and bottom are provided with for PCB board rotation rotating disc (12), be provided with for depositing PCB board depositing rack (13) between rotating disc (12), be installed for the clamping device (14) of depositing rack (13) between rotating disc (12) and depositing rack (13) are fixed, the center position of drying oven body (1) bottom is fixed with rotating drive part (121), and the output end of rotating drive part (121) passes through drying oven body (1) and is connected with the rotating disc (12) of drying oven body (1) inside bottom, depositing rack (13) at least have two layers for the cavity of depositing PCB board, depositing rack (13) is provided with a plurality of for depositing PCB board limit slot (132) in the cavity, depositing rack (13) is provided with the baffle (131) for blocking PCB board slide in PCB board insertion direction, and the baffle (131) is fixed on depositing rack (13) in the mode of magnetic adsorption, the clamping device (14) includes the fixator (141) of fixed rotating disc (12), and the pressboard (142) is rotatably arranged on the fixator (141), one end of pressboard (142) is pressed on rotating disc (12), and the other end bottom of pressboard (142) is provided as inclined plane, the bottom of the inside of pressboard (142) is fixed with guide rail (145), and the moving block (144) is slidably arranged on guide rail (145), the threaded rod (143) is rotatably arranged on the fixator (141), and the threaded rod (143) is connected with the fixator (141) through thread, and one end of threaded rod (143) is movably connected with moving block (144), the bottom of drying oven body (1) is provided with drain pipe (3) for draining, and the valve for controlling drainage is further fixed on drain pipe (3).

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