Circuit board ultrasonic cleaning device

Abstract

The utility model relates to a cleaning device, in particular to an ultrasonic cleaning device for a circuit board. The circuit board ultrasonic cleaning device comprises a shell, a cleaning pool, an ultrasonic module, a drainage pipe, a plug, an air cylinder and the like. A cleaning pool is fixedly installed on the lower portion in the shell, a cover plate is slidably arranged on the upper portion of the shell, an ultrasonic module is fixedly arranged on the front portion of the cleaning pool, the rear lower portion of the cleaning pool is connected and communicated with a drainage pipe, a plug is slidably arranged on the rear portion of the drainage pipe, and air cylinders are symmetrically arranged on the left side and the right side of the lower portion in the shell. According to the utility model, by arranging the dryer, the cleaned circuit board is dried in time, so that the problem that the production quality of the circuit board is influenced due to poor welding, short circuit and other quality problems of the circuit board caused by residual water vapor is avoided.

Description

Technical Field

[0001] The utility model relates to a cleaning device, in particular to an ultrasonic cleaning device for a circuit board. Background Art

[0002] Ultrasonic cleaning technology is a mature cleaning technology in foreign countries and is widely used in the fields of machinery, electronics, etc. Cleaning of electronic circuit boards after welding is a very important application.

[0003] Ultrasonic waves, like other sound waves, are a series of pressure points, i.e. a wave that alternates between compression and expansion. If the sound energy is strong enough, the liquid is pushed away during the expansion phase of the wave, thereby generating bubbles; and during the compression phase of the wave, these bubbles instantly burst or implode in the liquid, generating a very effective impact force, which is particularly suitable for cleaning. This process is called cavitation. Ultrasonic cleaning is based on cavitation, that is, countless bubbles are quickly formed and quickly imploded in the cleaning liquid, and the resulting impact will peel off the dirt on the inner and outer surfaces of the workpiece immersed in the cleaning liquid. After the circuit board is washed, a large amount of moisture will remain on the circuit board. If it is not dried, the moisture will easily enter the holes and pads of the circuit board and combine with the moisture in the circuit, causing the circuit board hole electrodes to fail, and in high-frequency circuits, it will affect the circuit performance.

[0004] In view of this, the utility model provides a circuit board ultrasonic cleaning device which can promptly dry the circuit board after cleaning to avoid residual water vapor causing quality problems such as poor welding and short circuit of the circuit board, which affects the production quality of the circuit board, thereby ensuring the stability and reliability of the product. Utility Model Content

[0005] In order to overcome the problem that a large amount of moisture will remain on a circuit board after cleaning, and if it is not dried in time, the moisture will easily enter the holes and pads of the circuit board and combine with the moisture in the circuit, causing the circuit board hole electrodes to fail, and in high-frequency circuits, it will affect the circuit performance. The purpose is to provide a circuit board ultrasonic cleaning device that can perform timely drying on the cleaned circuit board to avoid residual water vapor causing poor circuit board welding, short circuit and other quality problems, affecting the production quality of the circuit board, so as to ensure the stability and reliability of the product.

[0006] The technical scheme of the utility model is: a circuit board ultrasonic cleaning device, comprising a shell, a cleaning tank, an ultrasonic module, a drain pipe, a plug, a cylinder, a plate basket, a card plate, a connecting frame, a cover plate and a dryer, the cleaning tank is fixedly installed at the lower part of the shell, the cover plate is slidably provided at the upper part of the shell, the ultrasonic module is fixedly provided at the front part of the cleaning tank, the lower rear part of the cleaning tank is connected and communicated with a drain pipe, the rear part of the drain pipe is slidably provided with a plug, the left and right sides of the lower part of the shell are symmetrically provided, a plate basket is fixedly connected between the movable rods of the two cylinders, the plate basket slides inside the cleaning tank, the plate basket is composed of a card plate and a connecting frame, a plurality of card plates are evenly spaced on the connecting frame, the card plate is a U-shaped block, a dryer is installed on the left side of the upper part of the shell, and the dryer is communicated with the inside of the shell through a pipeline.

[0007] As a preferred technical solution of the utility model, it also includes a fixed plate, a mounting frame, a slider, a bidirectional screw rod, a fixed block, a motor, a cover curtain and a connecting block. A fixed plate is arranged on the inner side of the shell near the cleaning pool, and the mounting frames are symmetrically connected to the left and right sides of the top of the fixed plate. The mounting frames are rotatably provided with bidirectional screw rods, and sliders are symmetrically provided front and back on the outer sides of the two bidirectional screw rods. The front and rear sliders are respectively screwed to the threads on the same sides of the front and rear of the bidirectional screw rod, and the four sliders are fixedly connected to the connecting blocks. The motor is fixedly installed on the front of the mounting frame, and the motor output shaft is fixedly connected to the front of the bidirectional screw rod. Fixed blocks are symmetrically fixed to the mounting frame front and back, and a cover curtain is provided between the two fixed blocks and the two connecting blocks on the same side.

[0008] As a preferred technical solution of the utility model, a sound insulation board is also included, and the sound insulation board is fixedly arranged at the bottom of the cover plate.

[0009] As a preferred technical solution of the utility model, it also includes a dosing pump and a medicine tank. The dosing pump is installed on the upper rear side of the shell, the medicine tank is equipped on the dosing pump, and the dosing pump is connected to the inside of the cleaning tank through a pipeline.

[0010] As a preferred technical solution of the utility model, strip-shaped grooves are provided on both the front and rear sides and the lower side of the card plate.

[0011] Compared with the prior art, the utility model has the following advantages: the utility model sets a dryer to promptly dry the cleaned circuit board, thereby avoiding residual water vapor causing quality problems such as poor welding and short circuit of the circuit board, which affects the production quality of the circuit board, so as to ensure the stability and reliability of the product.

[0012] The utility model divides the space in the shell by covering curtains, reduces the area that needs to be heated by the dryer during drying, reduces energy consumption, effectively shortens the time for temperature rise during drying and heating, and improves drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a first partial three-dimensional structure of the utility model.

[0014] Figure 2 It is a cross-sectional view of the utility model.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the cleaning mechanism and the dosing mechanism and other components of the utility model.

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the cylinder, plate placing basket and other components of the utility model.

[0017] Figure 5 It is a three-dimensional structural schematic diagram of the covering mechanism and other components of the utility model.

[0018] Figure 6 This is a schematic diagram of a second partial three-dimensional structure of the utility model.

[0019] Figure 7 It is a three-dimensional structural schematic diagram of the cover plate and the sound insulation board of the utility model.

[0020] Among them: 1. Shell, 2. Cleaning tank, 21. Dosing pump, 22. Chemical tank, 3. Ultrasonic module, 31. Drain pipe, 32. Plug, 4. Cylinder, 5. Plate basket, 51. Card plate, 52. Connecting frame, 6. Cover plate, 61. Sound insulation board, 7. Dryer, 71. Fixed plate, 8. Mounting frame, 81. Slider, 9. Bidirectional screw, 91. Fixed block, 92. Motor, 10. Cover curtain, 11. Connecting block. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0022] Embodiment 1: A circuit board ultrasonic cleaning device, such as Figure 1-7As shown, it includes a shell 1, a cleaning pool 2, an ultrasonic module 3, a drain pipe 31, a plug 32, a cylinder 4, a plate basket 5, a card plate 51, a connecting frame 52, a cover plate 6 and a dryer 7. The cleaning pool 2 is fixedly installed at the lower part of the shell 1. The shell 1 is made of a harder material. Support feet for supporting the device as a whole and placing the device flat are welded at the lower part of the shell 1. A cover plate 6 is slidably provided on the upper part of the shell 1. The cover plate 6 is used to seal the inside of the shell 1 to prevent debris from falling into the inside of the device. An ultrasonic module 3 is fixedly provided at the front part of the cleaning pool 2. The ultrasonic module 3 emits ultrasonic frequencies when working, which are transmitted to the cleaning water in the cleaning pool 2 to produce a cavitation effect. Based on the cavitation effect, countless bubbles are quickly formed in the cleaning water and quickly implode. The impact thus generated will peel off the dirt on the inner and outer surfaces of the workpiece immersed in the cleaning liquid. The lower rear part of the cleaning tank 2 is connected and communicated with a drain pipe 31 for discharging the waste water after cleaning. The rear part of the drain pipe 31 is slidably provided with a plug 32 that blocks the drain pipe 31 to prevent the cleaning water from flowing out. Cylinders 4 are symmetrically arranged on the left and right sides of the lower inner part of the shell 1. A plate placing basket 5 is fixedly connected between the movable rods of the two cylinders 4. Under the action of the cylinder 4, the plate placing basket 5 slides inside the cleaning tank 2 to facilitate the placement of the circuit board. The plate placing basket 5 is composed of a card plate 51 and a connecting frame 52. A plurality of card plates 51 are evenly spaced on the connecting frame 52 for placing multiple circuit boards at one time for cleaning. The card plate 51 is a U-shaped block. After the circuit board is placed, the contact area between the circuit board and the circuit board is small. The purpose is to reduce the board placing assembly from blocking too much area on the surface of the circuit board during cleaning to avoid affecting the cleaning completion. A dryer 7 is installed on the left side of the upper part of the shell 1 for timely drying the surface of the circuit board. The dryer 7 is communicated with the inside of the shell 1 through a pipeline.

[0023] Initially, the movable rod of the cylinder 4 is in an upwardly extended state, and the plate basket 5 is located above the cleaning tank 2 in the shell 1. When the circuit board needs to be cleaned, the cover plate 6 is first slid backward, and then an appropriate amount of cleaning water required for cleaning is injected into the cleaning tank 2. Then, the multiple circuit boards that need to be cleaned are inserted into the card plate 51 on the plate basket 5 in turn, and then the cylinder 4 is controlled to retract the movable rod downward. At the same time, the ultrasonic module 3 is started, and the ultrasonic module 3 starts to work, and the ultrasonic frequency is penetrated into the cleaning water through the wall of the cleaning tank 2. Driven by the cylinder 4, the plate basket 5 moves downward and immerses in the cleaning water in the cleaning tank 2. The multiple circuit boards on the plate basket 5 are immersed in water and ultrasonically cleaned. When the circuit boards are cleaned in water for a period of time, the ultrasonic The wave module 3 is closed, and the cylinder 4 is controlled to extend the movable rod upward, driving the plate basket 5 to move upward and separate from the liquid in the cleaning tank 2, and then the cover plate 6 is moved forward so that the cover plate 6 closes the shell 1, and then the dryer 7 is started. The dryer 7 generates hot air and blows it into the shell 1 to dry the cleaning water remaining on the surface of the circuit board after cleaning in the plate basket 5. When the circuit board is dried, the dryer 7 is turned off, the cover plate 6 is slid backward and opened, and all the circuit boards in the plate basket 5 are taken away to complete the cleaning and drying work. When the used cleaning water in the cleaning tank 2 needs to be discharged, the plug 32 on the drain pipe 31 is opened, and the drain pipe 31 discharges the cleaning water in the cleaning tank 2. When all the cleaning water is discharged, the plug 32 is installed back to complete the drainage work.

[0024] Embodiment 2: Based on embodiment 1, Figure 2 and Figure 5 As shown, it also includes a fixing plate 71, a mounting frame 8, a slider 81, a bidirectional screw rod 9, a fixing block 91, a motor 92, a cover curtain 10 and a connecting block 11. A fixing plate 71 for separating spaces and installing shielding mechanism components is provided at the inner side of the housing 1 near the cleaning pool 2. An opening for the movable rod of the cylinder 4 and the plate placing basket 5 to pass through is opened in the fixing plate. The left and right sides of the top of the fixing plate 71 are symmetrically connected to the mounting frames 8. The mounting frames 8 are rotatably provided with bidirectional screw rods 9. Two opposite threads are symmetrically provided on the bidirectional screw rods 9. The outer sides of the two bidirectional screw rods 9 are symmetrically provided with sliders 81 that slide with the rotation of the bidirectional screw rods 9. The front and rear sliders 81 are respectively screwed to the threads on the same side of the front and rear of the bidirectional screw rod 9. The four sliders 81 are fixedly connected with connecting blocks 11. A motor 92 for outputting power is fixedly installed on the front of the mounting frame 8. The output shaft of the motor 92 is fixedly connected to the front of the bidirectional screw rod 9. The mounting frame 8 is symmetrically fixed with fixing blocks 91 front and back. A covering curtain 10 is provided between the two fixing blocks 91 and the two connecting blocks 11 on the same side. Driven by the connecting block 11, the covering curtain 10 can be opened to block the opening on the fixing plate 71, thereby dividing the upper and lower areas in the shell 1 and reducing the area that needs to be filled with hot air during drying.

[0025] like Figure 7 As shown, a sound insulation board 61 is also included. The bottom of the cover plate 6 is fixedly provided with a sound insulation board 61 for reducing the noise when the device is working.

[0026] like Figure 3 and Figure 6 As shown, it also includes a dosing pump 21 and a reagent tank 22. The dosing pump 21 that can quantitatively discharge liquid is installed on the upper rear side of the shell 1. The reagent tank 22 is equipped on the dosing pump 21. The reagent tank 22 is configured with a cleaning agent for assisting in cleaning the circuit board. The dosing pump 21 is connected to the inside of the cleaning pool 2 through a pipeline.

[0027] People can configure cleaning agents for auxiliary cleaning of circuit boards in the agent tank 22. When the circuit boards in the cleaning tank 2 are cleaned, the agents are quantitatively added to the cleaning tank 2 through the dosing pump 21 to speed up the cleaning efficiency. When ultrasonic cleaning is performed, the sliding cover 6 is closed. The sound insulation plate 61 on the cover 6 can effectively absorb and shield all the sound generated during ultrasonic cleaning, reduce the sound transmitted outside the device during cleaning, and reduce the noise when the device is working. When the cleaning is completed, the plate basket 5 is lifted by the cylinder 4. When the circuit boards need to be dried, the motor 92 on the mounting frame 8 is started. The motor 92 rotates forward, driving the bidirectional screw rod 9 to rotate. The two sliders 81 on the two threads of the bidirectional screw rod 9 move inward in opposite directions under the rotation of the bidirectional screw rod 9. The connecting block 11 connected to the slider 81 moves oppositely with the movement of the slider 81, and the two covering curtains 10 open with the movement of the connecting blocks to cover the opening on the fixed plate 71. Under the action of the covering curtains 10, the shell 1 is divided into two upper and lower spaces, and then the dryer 7 is started to dry the circuit board above the covering curtains 10. The covering curtains 10 are used to separate the space in the shell 1, thereby reducing the area that the dryer 7 needs to heat during drying, reducing energy consumption, and effectively shortening the time for temperature rise during drying and heating, thereby improving drying efficiency. After drying, the dryer 7 is turned off, and the motor 92 is controlled to reverse, the covering curtains 10 are opened, and then the cover plate 6 is slid open to remove the circuit board, thereby completing the cleaning work.

[0028] Strip-shaped grooves are formed on the front and rear sides and the bottom of the card block 51, which further reduces the contact area between the card block 5 and the circuit board and increases the contact area between the liquid and the circuit board.

[0029] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A circuit board ultrasonic cleaning device, comprising a shell (1), a cleaning tank (2), an ultrasonic module (3), a drain pipe (31), a plug (32) and a cylinder (4), wherein the cleaning tank (2) is fixedly installed in the lower part of the shell (1), a cover plate (6) is slidably provided on the upper part of the shell (1), an ultrasonic module (3) is fixedly provided on the front part of the cleaning tank (2), a drain pipe (31) is connected and communicated with the rear lower part of the cleaning tank (2), a plug (32) is slidably provided on the rear part of the drain pipe (31), cylinders (4) are symmetrically provided on the left and right sides of the lower part of the shell (1), a plate placing basket (5) is fixedly connected between the movable rods of the two cylinders (4), and the plate placing basket (5) slides inside the cleaning tank (2); Features: The invention also comprises a plate placing basket (5), a card plate (51), a connecting frame (52), a cover plate (6) and a dryer (7). The plate placing basket (5) is composed of a card plate (51) and a connecting frame (52). A plurality of card plates (51) are evenly spaced on the connecting frame (52). The card plate (51) is a U-shaped block. The dryer (7) is installed on the left side of the upper part of the shell (1). The dryer (7) is connected to the inside of the shell (1) through a pipeline.

2. A circuit board ultrasonic cleaning device as claimed in claim 1, characterized in that: The utility model also comprises a fixing plate (71), a mounting frame (8), a slider (81), a bidirectional screw rod (9), a fixing block (91), a motor (92), a covering curtain (10) and a connecting block (11). A fixing plate (71) is arranged on the inner side of the housing (1) near the cleaning pool (2). The fixing plate (71) is symmetrically connected to the left and right sides of the top of the fixing plate (71). The bidirectional screw rod (9) is rotatably arranged on the mounting frame (8). The outer sides of the two bidirectional screw rods are symmetrically provided with sliders (81) front and back. The front and rear sliders (81) are respectively screwed to the threads on the same side of the bidirectional screw rod (9). The four sliders (81) are fixedly connected to the connecting block (11). The front part of the mounting frame (8) is fixedly installed with a motor (92). The output shaft of the motor (92) is fixedly connected to the front part of the bidirectional screw rod (9). The fixing blocks (91) are symmetrically fixed to the mounting frame (8) front and back. The covering curtain (10) is arranged between the two fixing blocks (91) and the two connecting blocks on the same side.

3. A circuit board ultrasonic cleaning device as claimed in claim 2, characterized in that: A sound insulation board (61) is also included, and the bottom of the cover plate (6) is fixedly provided with the sound insulation board (61).

4. A circuit board ultrasonic cleaning device as claimed in claim 3, characterized in that: It also includes a dosing pump (21) and a medicine tank (22). The dosing pump (21) is installed on the upper rear side of the shell (1), the medicine tank (22) is arranged on the dosing pump (21), and the dosing pump (21) is connected to the inside of the cleaning pool (2) through a pipeline.

5. A circuit board ultrasonic cleaning device as claimed in claim 4, characterized in that: The card plate (51) is provided with strip-shaped slots on both the front and rear sides and the lower side.

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