Printed circuit board (PCB) printing ink cleaning device and cleaning method

Abstract

The invention relates to the technical field of PCB cleaning, and discloses a PCB ink cleaning device and method, the PCB ink cleaning device comprises a liquid tank and an ultrasonic generator, the ultrasonic generator is fixed at the bottom of the liquid tank, a supporting plate is fixed on the side wall of the liquid tank, and an L-shaped supporting block is fixed at the top of the supporting plate. According to the PCB printing ink cleaning device and cleaning method, in order to dry a cleaned PCB, a first motor is started, and through cooperation of a rotating shaft, a disc, an electric heating resistor, a sliding rod, a sliding sleeve, fan blades, a rotating rod, a driving spoiler, a connecting rod, a driving wheel, a driven wheel, a transmission belt, a rotating rod and a driven spoiler, the rotating rod and the driven spoiler are driven to rotate; according to the PCB drying device, the electric heating resistor is arranged, so that air blown out by the fan can be heated through the electric heating resistor, and then hot air can be blown to the PCB in a large range through turbulent flow of the driving turbulent flow plate and the driven turbulent flow plate to dry the PCB.

Description

Technical Field

[0001] This invention relates to the field of PCB board cleaning technology, specifically to a PCB board ink cleaning device and cleaning method. Background Technology

[0002] A PCB, or Printed Circuit Board, is an important electronic component. It serves as the support for electronic components and the carrier for their electrical interconnections. Because it is manufactured using electronic printing techniques, it is called a "printed" circuit board. The PCB manufacturing process includes steps such as material preparation, drilling, copper plating, pattern transfer, pattern electroplating, stripping, etching, applying solder mask, silkscreen printing, surface treatment, forming, testing, and final inspection. After etching, the PCB needs to be cleaned to remove dust and ink from its surface.

[0003] Existing PCB ink cleaning devices do not have a drying effect after cleaning the PCB board. The PCB board is directly removed from the ultrasonic cleaner. Furthermore, the excessive cleaning fluid on the PCB board after cleaning makes it inconvenient for workers to handle the board. During transportation, the cleaning fluid on the PCB board will drip everywhere. Summary of the Invention

[0004] The purpose of this invention is to provide a PCB board ink cleaning device and cleaning method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a PCB board ink cleaning device, comprising a liquid tank and an ultrasonic generator, wherein the ultrasonic generator is fixed to the bottom of the liquid tank, a support plate is fixed to the side wall of the liquid tank, an L-shaped support block is fixed to the top of the support plate, and a control mechanism and a drying mechanism are provided on the L-shaped support block, wherein the drying mechanism includes:

[0006] Motor No. 1 is fixed to the top of the L-shaped support block. A rotating shaft is fixed to the output end of Motor No. 1, and fan blades are fixed to the outer wall of the rotating shaft.

[0007] Thermostat, which is fixed to the inside of the L-shaped support block;

[0008] A rotating rod is rotatably mounted on the inner side of an L-shaped support block. An active spoiler is fixed to the outer wall of the rotating rod, and a connecting rod is fixed to the inner top of the active spoiler.

[0009] A disc is fixed to the bottom of a rotating shaft. A sliding rod passes through the disc and is slidably connected to the disc at the through-hole. A sliding sleeve is fixed to the bottom of the sliding rod, and the inner wall of the sliding sleeve fits against the outer wall of the connecting rod. By setting up a drying mechanism, the PCB board can be dried.

[0010] Preferably, a rotating rod is rotatably mounted on the inner side of the L-shaped support block, a driven spoiler is fixed to the outer wall of the rotating rod, a driving wheel is fixed to the outer wall of the rotating rod, and a driven wheel is fixed to the outer wall of the rotating rod. The driving wheel and the driven wheel are connected by a transmission belt. By setting the driving spoiler and the driven spoiler, the drying range can be increased, and the PCB board drying effect can be improved.

[0011] Preferably, the control mechanism includes a second motor, which is fixed to the bottom of the support plate. A sliding groove is provided on the inner side of the L-shaped support block. A threaded rod is fixed to the output end of the second motor, and the top of the threaded rod is rotatably mounted on the inner wall of the sliding groove.

[0012] Preferably, a slider is threadedly connected to the outer wall of the threaded rod. The slider is slidably mounted on the inner wall of the slide groove. A connecting plate is slidably mounted on the side of the slider away from the slide groove. A slot is formed on the connecting plate, and an L-shaped connecting rod is slidably mounted on the inner wall of the slot. A placement frame is fixed to the end of the L-shaped connecting rod away from the connecting plate. The PCB board can be placed by setting the placement frame.

[0013] Preferably, a fixing block is fixed to the side of the connecting plate near the L-shaped support block, and a connecting spring is fixed to the bottom of the fixing block. The bottom of the connecting spring is fixed to the groove of the slider.

[0014] Preferably, a return spring is fixed to the outer wall of the L-shaped connecting rod, and the side of the return spring away from the L-shaped connecting rod is fixed to the inner wall of the slot. By setting the return spring, the L-shaped connecting rod can be reset.

[0015] Preferably, a support column is fixed to the top of the liquid tank, and multiple sets of equally spaced arc-shaped blocks are fixed to the side wall of the support column.

[0016] Preferably, the outer wall of the rotating rod is fixed with extrusion wheels, and two sets of extrusion wheels are provided, with the two sets of extrusion wheels symmetrically arranged about the center line in the vertical direction of the rotating rod as the axis of symmetry.

[0017] Preferably, there are two sets of driven spoilers, and the two sets of driven spoilers are symmetrically arranged with the center line of the L-shaped support block in the vertical direction as the axis of symmetry.

[0018] A method for cleaning ink from a PCB board, comprising the following steps:

[0019] S1. When it is necessary to clean the PCB board, the PCB board can be placed in the placement mesh frame, and then the No. 2 motor can be started to make the threaded rod rotate forward, causing the slider to move downward. Through the cooperation of the connecting plate and the L-shaped connecting rod, the placement mesh frame can be extended into the liquid tank, and then the ultrasonic generator can be started to perform ultrasonic cleaning.

[0020] S2. After the PCB board is cleaned, the No. 2 motor can be controlled to reverse the threaded rod, thereby moving the slider upward. Through the cooperation of the connecting plate and the L-shaped connecting rod, the mesh frame can be removed from the liquid tank.

[0021] S3. When the connecting plate moves the L-shaped connecting rod upward, it will make the L-shaped connecting rod contact the arc block, which will cause the L-shaped connecting rod to be squeezed and move in the slot. This will compress the return spring. When the L-shaped connecting rod moves between the two sets of arc blocks, the return spring is in a compressed state, which can cause the L-shaped connecting rod to drive the placement frame back to its original position. Furthermore, while the placement frame is moving upward, it can also shake left and right, which can shake the water on the placement frame off.

[0022] S4. When the placement frame is moved to the top of the liquid tank, the No. 1 motor and the heating resistor can be started to rotate the rotating shaft, which drives the disc to rotate. Through the cooperation of the sliding rod and the sliding sleeve, the sliding sleeve moves on the connecting rod, which in turn drives the active spoiler to swing. Through the cooperation of the active wheel, the transmission belt and the driven wheel, the active spoiler and the driven spoiler can swing together to dry the PCB board in the placement frame.

[0023] Compared with the prior art, the present invention provides a PCB board ink cleaning device and cleaning method, which has the following beneficial effects:

[0024] 1. The PCB board ink cleaning device and cleaning method are designed to dry the cleaned PCB board. A motor is started, and through the cooperation of a rotating shaft, disc, heating resistor, sliding rod, sliding sleeve, fan blade, rotating rod, active spoiler, connecting rod, active wheel, driven wheel, transmission belt, rotating rod, and driven spoiler, the air blown by the fan is heated by the heating resistor. Then, through the turbulence of the active and driven spoilers, the hot air is blown onto the PCB board over a wide area, thus drying the PCB board.

[0025] 2. The PCB board ink cleaning device and cleaning method are designed to facilitate the removal of PCB boards from the placement frame. A second motor is activated, and through the cooperation of a threaded rod, slider, connecting plate, L-shaped connecting rod, and placement frame, the placement frame can be removed from the liquid tank, making it easier to remove the PCB board. Furthermore, when the L-shaped connecting rod moves upward, the cooperation of the support column, arc-shaped block, and return spring causes the placement frame to shake left and right, thereby shaking off the cleaning liquid adhering to the placement frame.

[0026] 3. The PCB board ink cleaning device and cleaning method, in order to improve the drying efficiency of the PCB board, when the placement mesh frame is taken out of the liquid tank and the drying mechanism is used for drying, the rotation rod, the extrusion wheel, the connecting plate and the connecting spring are used to make the placement mesh frame shake up and down while the drying mechanism is drying, thereby accelerating the drop of cleaning liquid on the PCB board and further improving the drying efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the overall structure of the present invention from a side view;

[0030] Figure 4 This is a schematic diagram of the overall rear view structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the overall side view structure of the present invention;

[0032] Figure 6 For the present invention Figure 2 Enlarged schematic diagram of structure A;

[0033] Figure 7 For the present invention Figure 3 Enlarged schematic diagram of structure B;

[0034] Figure 8 For the present invention Figure 2 A magnified schematic diagram of the C-structure;

[0035] Figure 9 For the present invention Figure 5 A magnified schematic diagram of the D structure.

[0036] In the diagram: 1. Liquid tank; 2. Ultrasonic generator; 3. Support plate; 4. L-shaped support block; 5. Control mechanism; 6. Drying mechanism; 501. Motor No. 2; 502. Slide groove; 503. Threaded rod; 504. Slider; 505. Connecting plate; 506. Slot; 507. L-shaped connecting rod; 508. Placement frame; 509. Return spring; 510. Support column; 511. Arc-shaped block; 512. Connecting spring 513. Spring; 6. Fixing block; 7. Drying mechanism; 8. Motor No. 1; 9. Rotating shaft; 10. Fan blade; 11. Disc; 12. Sliding rod; 13. Sliding sleeve; 14. Rotating rod; 15. Rotating rod; 16. Active spoiler; 17. Connecting rod; 18. Thermoelectric resistor; 19. Rotating rod; 10. Driven spoiler; 11. Driven wheel; 12. Driven wheel; 13. Driven belt; 14. Extrusion wheel. Detailed Implementation

[0037] like Figures 1-9 As shown, the present invention provides a technical solution: a PCB board ink cleaning device, including a liquid tank 1 and an ultrasonic generator 2. The ultrasonic generator 2 is fixed to the bottom of the liquid tank 1. A support plate 3 is fixed to the side wall of the liquid tank 1. An L-shaped support block 4 is fixed to the top of the support plate 3. A control mechanism 5 and a drying mechanism 6 are provided on the L-shaped support block 4.

[0038] The aforementioned drying mechanism 6 includes a primary motor 601, which is fixed to the top of the L-shaped support block 4. A rotating shaft 602 is fixed to the output end of the primary motor 601, and fan blades 603 are fixed to the outer wall of the rotating shaft 602. A thermoelectric resistor 610 is fixed to the inner side of the L-shaped support block 4. When the primary motor 601 is started, the fan blades 603 rotate, causing the airflow from the fan blades 603 to pass through the thermoelectric resistor 610, thereby generating hot airflow that can be... Hot airflow dries the PCB board. A rotating rod 607 is rotatably mounted inside the L-shaped support block 4. An active spoiler 608 is fixed to the outer wall of the rotating rod 607, and a connecting rod 609 is fixed to the inner top of the active spoiler 608. A disc 604 is fixed to the bottom of the rotating shaft 602. A sliding rod 605 passes through the disc 604 and is slidably connected to the disc 604 at the point of penetration. A sliding sleeve 606 is fixed to the bottom of the sliding rod 605. The inner wall of sleeve 606 fits against the outer wall of connecting rod 609. A rotating rod 611 is rotatably mounted on the inner side of L-shaped support block 4. A driven spoiler 612 is fixed to the outer wall of rotating rod 611. Two sets of driven spoilers 612 are provided, and the two sets of driven spoilers 612 are symmetrically arranged about the vertical center line of L-shaped support block 4 as the axis of symmetry. When motor 601 is started, rotating rod 607 can rotate, which in turn drives disk 604 to rotate. This is achieved through sliding rod 605 and sliding sleeve 606. The active spoiler 608 can be made to swing. Through the cooperation of the active wheel 613 and the driven wheel 614, the driven spoiler 612 can be made to swing, which can turbulent the hot airflow, so that the hot airflow has a wider contact with the PCB board, thereby expanding the drying range and improving the drying effect. The active wheel 613 is fixed on the outer wall of the rotating rod 607, and the driven wheel 614 is fixed on the outer wall of the rotating rod 611. The active wheel 613 and the driven wheel 614 are connected by a transmission belt 615.

[0039] The aforementioned control mechanism 5 includes a second motor 501, which is fixed to the bottom of the support plate 3. A groove 502 is provided on the inner side of the L-shaped support block 4. A threaded rod 503 is fixed to the output end of the second motor 501. The top of the threaded rod 503 is rotatably mounted on the inner wall of the groove 502. A slider 504 is threadedly connected to the outer wall of the threaded rod 503. The slider 504 is slidably mounted on the inner wall of the groove 502. A connecting plate 505 is slidably mounted on the side of the slider 504 away from the groove 502. A slot 506 is provided on the connecting plate 505. An L-shaped connecting rod 507 is slidably mounted on the inner wall of the slot 506. A placement frame 508 is fixed to the end of the L-shaped connecting rod 507 away from the connecting plate 505. The PCB board can be placed using the placement frame 508. The connecting plate 505 is close to the L-shaped support block 4. A fixing block 513 is fixed on one side, and a connecting spring 512 is fixed at the bottom of the fixing block 513. The bottom of the connecting spring 512 is fixed in the groove of the slider 504. By setting the connecting spring 512, the connecting plate 505 can be reset. A reset spring 509 is fixed on the outer wall of the L-shaped connecting rod 507. The side of the reset spring 509 away from the L-shaped connecting rod 507 is fixed on the inner wall of the slot 506. By setting the reset spring 509, the L-shaped connecting rod 507 can be reset. A support column 510 is fixed on the top of the liquid tank 1. Multiple sets of equally spaced arc-shaped blocks 511 are fixed on the side wall of the support column 510. A squeezing wheel 7 is fixed on the outer wall of the rotating rod 607. Two sets of squeezing wheels 7 are provided, and the two sets of squeezing wheels 7 are symmetrically arranged with the center line in the vertical direction of the rotating rod 607 as the axis of symmetry.

[0040] A method for cleaning ink from a PCB board, comprising the following steps:

[0041] S1. When it is necessary to clean the PCB board, the PCB board can be placed in the placement frame 508, and then the second motor 501 can be started to make the threaded rod 503 rotate forward, causing the slider 504 to move downward. Through the cooperation of the connecting plate 505 and the L-shaped connecting rod 507, the placement frame 508 can be extended into the liquid tank 1, and then the ultrasonic generator 2 can be started to perform ultrasonic cleaning.

[0042] S2. After the PCB board is cleaned, the second motor 501 can be controlled to reverse the threaded rod 503, thereby moving the slider 504 upward. Through the cooperation of the connecting plate 505 and the L-shaped connecting rod 507, the mesh frame 508 can be removed from the liquid tank 1.

[0043] S3. When the connecting plate 505 moves the L-shaped connecting rod 507 upward, the L-shaped connecting rod 507 will contact the arc block 511, causing the L-shaped connecting rod 507 to be subjected to squeezing force, causing the L-shaped connecting rod 507 to move in the slot 506, compressing the return spring 509. When the L-shaped connecting rod 507 moves between the two sets of arc blocks 511, because the return spring 509 is in a compressed state, the L-shaped connecting rod 507 can drive the placement frame 508 back to its original position. Furthermore, while the placement frame 508 is moving upward, it can also shake left and right, thereby shaking off the water on the placement frame 508, which facilitates the subsequent drying operation of the PCB board.

[0044] S4. When the placement frame 508 is moved to the top of the liquid tank 1, the first motor 601 and the heating resistor 610 can be started, causing the rotating shaft 602 to rotate, driving the disc 604 to rotate, causing the sliding rod 605 to drive the sliding sleeve 606 to move on the outer wall of the connecting rod 609. When the sliding rod 605 drives the sliding sleeve 606 to move, the sliding rod 605 will slide up and down on the disc 604. When the sliding sleeve 606 moves on the connecting rod 609, it can drive the active spoiler 608 to swing. Through the cooperation of the driving wheel 613, the transmission belt 615, the driven wheel 614 and the rotating rod 611, the active spoiler 608 and the driven spoiler 612 can swing together, affecting the interior of the placement frame 508. The PCB board is dried to facilitate subsequent handling. When the placement frame 508 moves to the top of the liquid tank 1, the second motor 501 can be turned off, causing the connecting plate 505 to move to the bottom of the extrusion roller 7. Due to the swing of the rotating rod 607, the extrusion roller 7 will squeeze the connecting plate 505, causing the connecting plate 505 to move downward and compress the connecting spring 512. When the extrusion roller 7 does not squeeze the connecting plate 505, the connecting spring 512 is in a compressed state, which can reset the connecting plate 505. When the extrusion roller 7 swings, the connecting plate 505 can drive the placement frame 508 to shake up and down, which can accelerate the dripping of cleaning liquid from the PCB board and further improve the drying efficiency.

[0045] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A PCB board ink cleaning device, comprising a liquid tank (1) and an ultrasonic generator (2), wherein the ultrasonic generator (2) is fixed to the bottom of the liquid tank (1), characterized in that: A support plate (3) is fixed to the side wall of the liquid tank (1), and an L-shaped support block (4) is fixed to the top of the support plate (3). A control mechanism (5) and a drying mechanism (6) are provided on the L-shaped support block (4). The drying mechanism (6) includes: Motor No. 1 (601) is fixed on the top of L-shaped support block (4). A rotating shaft (602) is fixed to the output end of motor No. 1 (601). A fan blade (603) is fixed to the outer wall of the rotating shaft (602). Thermoelectric resistor (610) is fixed to the inside of the L-shaped support block (4); Rotary rod (607), the rotating rod (607) is rotatably installed on the inner side of L-shaped support block (4), an active spoiler (608) is fixed on the outer wall of the rotating rod (607), and a connecting rod (609) is fixed on the inner side of the top of the active spoiler (608); A disc (604) is fixed to the bottom of a rotating shaft (602). A sliding rod (605) passes through the disc (604) and is slidably connected to the through-hole of the disc (604). A sliding sleeve (606) is fixed to the bottom of the sliding rod (605), and the inner wall of the sliding sleeve (606) is in contact with the outer wall of the connecting rod (609).

2. The PCB board ink cleaning device according to claim 1, characterized in that: A rotating rod (611) is rotatably mounted on the inner side of the L-shaped support block (4). A driven spoiler (612) is fixed on the outer wall of the rotating rod (611). A driving wheel (613) is fixed on the outer wall of the rotating rod (607). A driven wheel (614) is fixed on the outer wall of the rotating rod (611). The driving wheel (613) and the driven wheel (614) are connected by a transmission belt (615).

3. The PCB board ink cleaning device according to claim 1, characterized in that: The control mechanism (5) includes a second motor (501), which is fixed to the bottom of the support plate (3). The inner side of the L-shaped support block (4) is provided with a sliding groove (502). The output end of the second motor (501) is fixed with a threaded rod (503), and the top of the threaded rod (503) is rotatably installed on the inner wall of the sliding groove (502).

4. The PCB board ink cleaning device according to claim 3, characterized in that: The outer wall of the threaded rod (503) is threadedly connected to a slider (504). The slider (504) is slidably installed on the inner wall of the groove (502). A connecting plate (505) is slidably installed on the side of the slider (504) away from the groove (502). A slot (506) is provided on the connecting plate (505). An L-shaped connecting rod (507) is slidably installed on the inner wall of the slot (506). A mesh frame (508) is fixed to the end of the L-shaped connecting rod (507) away from the connecting plate (505).

5. The PCB board ink cleaning device according to claim 4, characterized in that: A fixing block (513) is fixed on the side of the connecting plate (505) near the L-shaped support block (4). A connecting spring (512) is fixed at the bottom of the fixing block (513). The bottom of the connecting spring (512) is fixed in the groove of the slider (504).

6. The PCB board ink cleaning device according to claim 4, characterized in that: A return spring (509) is fixed to the outer wall of the L-shaped connecting rod (507), and the side of the return spring (509) away from the L-shaped connecting rod (507) is fixed to the inner wall of the slot (506).

7. The PCB board ink cleaning device according to claim 1, characterized in that: The top of the liquid tank (1) is fixed with a support column (510), and the side wall of the support column (510) is fixed with a number of equally spaced arc blocks (511).

8. The PCB board ink cleaning device according to claim 1, characterized in that: The outer wall of the rotating rod (607) is fixed with extrusion wheels (7). There are two sets of extrusion wheels (7), and the two sets of extrusion wheels (7) are symmetrically arranged with the center line in the vertical direction of the rotating rod (607) as the axis of symmetry.

9. A PCB board ink cleaning device according to claim 2, characterized in that: Two sets of driven spoilers (612) are provided, and the two sets of driven spoilers (612) are symmetrically arranged with the center line of the vertical direction of the L-shaped support block (4) as the axis of symmetry.

10. A method for cleaning ink from a PCB board, characterized in that: The usage method includes the following steps: S1. When it is necessary to clean the PCB board, the PCB board can be placed in the placement frame (508), and then the second motor (501) can be started to make the threaded rod (503) rotate forward, and the slider (504) moves downward. Through the cooperation of the connecting plate (505) and the L-shaped connecting rod (507), the placement frame (508) can be extended into the liquid tank (1), and then the ultrasonic generator (2) can be started to perform ultrasonic cleaning operation. S2. After the PCB board is cleaned, the second motor (501) can be controlled to reverse the threaded rod (503), thereby causing the slider (504) to move upward. Through the cooperation of the connecting plate (505) and the L-shaped connecting rod (507), the mesh frame (508) can be removed from the liquid tank (1). S3. When the connecting plate (505) moves the L-shaped connecting rod (507) upward, the L-shaped connecting rod (507) will come into contact with the arc block (511), and the L-shaped connecting rod (507) will be subjected to squeezing force, causing the L-shaped connecting rod (507) to move in the slot (506), causing the return spring (509) to compress. When the L-shaped connecting rod (507) moves between the two sets of arc blocks (511), because the return spring (509) is in a compressed state, the L-shaped connecting rod (507) can drive the placement frame (508) back to its original position. Then, while the placement frame (508) moves upward, it can also shake left and right, thereby shaking the water on the placement frame (508) off. S4. When the placement frame (508) is moved to the top of the liquid tank (1), the No. 1 motor (601) and the thermoelectric resistor (610) can be started to make the rotating shaft (602) rotate, which drives the disc (604) to rotate. Through the cooperation of the sliding rod (605) and the sliding sleeve (606), the sliding sleeve (606) moves on the connecting rod (609), which can drive the active spoiler (608) to swing. Through the cooperation of the active wheel (613), the transmission belt (615) and the driven wheel (614), the active spoiler (608) and the driven spoiler (612) can swing together to dry the PCB board in the placement frame (508).

Images