A circuit board cleaning device and a cleaning method

Abstract

The present invention provides a circuit board cleaning device and a cleaning method, belonging to the technical field of circuit board cleaning. The cleaning device includes a box body, a spraying device and a clamping device. The clamping device includes a receiving frame, a moving component and a clamping component arranged on the receiving frame; the moving component includes a liquid injection cavity, a piston rod and a moving frame, and an elastic member is further connected between the piston rod and the moving frame; the clamping component includes a rotating shaft, a first clamping member, a second clamping member and a driving member. The second clamping member is rotatably connected to the receiving frame. The piston rod drives the moving frame to move horizontally, so that the first clamping member approaches the second clamping member. In the present invention, the driving member drives the circuit board to reciprocally deflect within a certain range, increasing the area of the circuit board rinsed by the spraying device and reducing the dead angle of cleaning. Through the movement of the first clamping member, the first clamping member and the second clamping member clamp the circuit board, thereby fixing the circuit board and reducing the shaking during the deflection of the circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board cleaning, and particularly relates to a circuit board cleaning device and a cleaning method. Background Art

[0002] Circuit boards are often used to connect and support electronic components. It usually consists of an insulating substrate and a metal foil with conductive circuits printed on it. In the production and manufacturing process of circuit boards, it is often necessary to use soldering to fixedly connect and connect circuit components to the circuits on the circuit board. During the soldering process, solder paste, solder, solder wire, etc. are used for soldering. The flux among them may produce residues during the soldering process, forming contamination on the surface of the circuit board. In addition, the recycled circuit boards will also adhere to dirt such as dust, and the circuit boards need to be cleaned.

[0003] Spraying is a method for cleaning circuit boards. When cleaning, multiple circuit boards are placed in a cleaning frame, fixed by a fixing device, and then placed in a cabinet-type spraying device, and are cleaned by a spray head. After cleaning, they are dried. For example, the patent document with the publication number CN118287426B discloses a computer circuit board cleaning device, which includes a cleaning pool. A conveyor belt is installed at the center of the cleaning pool. A top plate and a clamping assembly are installed on the conveyor belt. A spray head is installed on the top plate. The clamping assembly is used to clamp the circuit board. The circuit board is clamped inside the clamping assembly, the upper and lower ends of the circuit board are limited, and the middle two sides are hollowed out. Through the methods of soaking, rinsing and drying, and in cooperation with the cyclic conveyance of the conveyor belt, the cleaning of the circuit board can be completed according to the process.

[0004] When the spray head of the above cleaning device cleans the circuit board, since the position of the spray head is fixed, generally only one side of the circuit board is rinsed. However, electronic components are connected to the circuit board. Especially for double-sided boards, when the spray head rinses one side of the circuit board, due to the shielding of the electronic components or the top surface of the double-sided board, the shielded part of the circuit board cannot receive the rinsing of the spray head. After the cleaning liquid sprayed from the spray head hits the circuit board, it contacts the shielded part of the circuit board in a flowing manner, so that the cleaning effect of this part of the circuit board is not as good as that of the part of the circuit board rinsed by the spray head. Therefore, it is necessary to develop a circuit board cleaning device and a cleaning method to solve the technical problem that the shielded part of the circuit board is not rinsed by the spray head due to too many shielded parts when using the spraying method to clean the circuit board, resulting in an unsatisfactory cleaning effect. Summary of the Invention

[0005] In view of this, the present invention provides a circuit board cleaning device and a cleaning method, which solve the technical problem that the shielded part of the circuit board is not rinsed by the spray head due to too many shielded parts when using the spraying method to clean the circuit board, resulting in an unsatisfactory cleaning effect, by fixing the circuit board before spraying and enabling the circuit board to swing.

[0006] To solve the above technical problems, on the one hand, the present invention provides a circuit board cleaning device, which includes a box body, a spraying device and a clamping device arranged in the box body. The clamping device includes a receiving frame slidably connected in the box body, a moving component arranged on the receiving frame, and a clamping component for clamping the circuit board.

[0007] The moving component includes a liquid injection cavity fixedly arranged on one side of the receiving frame, a piston rod slidably installed in the liquid injection cavity, a moving frame fixedly connected to the end of the piston rod and slidably connected to the receiving frame. An elastic member is also connected between the piston rod and the moving frame.

[0008] The clamping component includes a rotating shaft rotatably connected to the moving frame, a clamping member one fixedly connected to the rotating shaft, a clamping member two slidably connected to the rotating shaft, and a driving member for driving the rotating shaft to rotate. The clamping member two is rotatably connected to the receiving frame. The piston rod drives the moving frame to move horizontally, so that the clamping member one approaches the clamping member two.

[0009] The driving member includes a driving wheel arranged at one end of the moving frame close to the piston rod, a swinging wheel fixedly connected to the rotating shaft, a linkage mechanism connected between the central shaft of the driving wheel and the end face of the swinging wheel. A driving wheel housing is installed outside the driving wheel. A liquid injection pipe is connected between the driving wheel housing and the liquid injection cavity. The hydraulic energy in the liquid injection pipe can drive the driving wheel to rotate.

[0010] By adopting the above technical solution, first install the circuit board to be cleaned between the clamping member one and the clamping member two for preliminary positioning of the circuit board. Then inject liquid into the liquid injection cavity. The hydraulic pressure pushes the piston rod and the moving frame to move horizontally. The moving frame drives the rotating shaft to move, and the rotating shaft drives the clamping member one to approach the clamping member two, so that the clamping member one and the clamping member two clamp the circuit board, thereby fixing the circuit board. Continue to inject liquid into the liquid injection cavity. The liquid enters the liquid injection pipe and then enters the driving wheel housing, thereby driving the driving wheel to rotate. The driving wheel drives the swinging wheel to swing through the linkage mechanism, and the swinging wheel drives the rotating shaft to swing, and then drives the clamping member one and the clamping member two to swing, so that the circuit board swings. Then, the spraying device sprays the cleaning liquid to wash the circuit board. After the circuit board is cleaned, turn off the spraying device and stop injecting liquid into the liquid injection cavity. The circuit board stops swinging. The piston rod resets under the elastic force of the elastic member, and then drives the moving frame and the rotating shaft to move in the reverse direction, so that the clamping member one and the clamping member two move away, and the cleaned circuit board is taken off. The present invention drives the driving wheel to rotate through liquid, and then enables the circuit board to reciprocally deflect within a certain range, increasing the area of the circuit board washed by the spraying device, reducing the cleaning dead angle, improving the cleaning effect. At the same time, before cleaning, through the movement of the clamping member one, the clamping member one and the clamping member two clamp the circuit board, thereby fixing the circuit board, reducing the shaking during the deflection of the circuit board, and reducing the damage to the components on the circuit board caused by the circuit board detaching from the clamping member one and the clamping member two.

[0011] Preferably, a first clamping plate is elastically connected to one side of the first clamping member facing the second clamping member, and a second clamping plate is elastically connected to one side of the second clamping member facing the first clamping member. The first clamping plate and the second clamping plate are used to clamp both sides of the circuit board.

[0012] By adopting the above technical solution, when installing the circuit board, first install the circuit board on the first clamping plate and the second clamping plate. The first clamping plate and the second clamping plate initially position both sides of the circuit board. Then, inject liquid into the liquid injection cavity. The hydraulic pressure pushes the piston rod and the moving frame to move horizontally. The moving frame drives the rotating shaft to move, and the rotating shaft drives the first clamping member to approach the second clamping member, so that the first clamping member and the second clamping member clamp the circuit board, thereby fixing the circuit board.

[0013] Preferably, a third clamping plate is elastically connected to the part of the rotating shaft between the first clamping member and the second clamping member. The third clamping plate is used to clamp the edge of the circuit board.

[0014] By adopting the above technical solution, the position of the bottom edge of the circuit board is fixed by the third clamping plate, and the positions of both sides and the bottom plate of the circuit board are fixed, so that the position of the circuit board is determined, which is beneficial to improving the stability of the circuit board fixation.

[0015] Preferably, a liquid injection hole is provided on the side wall of the liquid injection cavity. The piston rod can seal the liquid injection hole. The liquid injection pipe is connected to the liquid injection hole. After injecting liquid into the liquid injection cavity, when the hydraulic pressure pushes the piston rod to move, the liquid injection hole is opened, and the liquid in the liquid injection cavity enters the liquid injection pipe through the liquid injection hole.

[0016] By adopting the above technical solution, after injecting liquid into the liquid injection cavity, the hydraulic pressure first pushes the piston rod to move. The movable rod drives the moving frame and the rotating shaft to move, so that the first clamping member and the second clamping member fix the circuit board. After the piston rod moves, the liquid injection hole is opened, and liquid is continuously injected into the liquid injection cavity. The liquid enters the liquid injection pipe through the liquid injection hole, and then enters the driving wheel housing, thereby driving the driving wheel to rotate. The driving wheel drives the swing wheel to swing through the connecting mechanism, and further drives the rotating shaft, the first clamping member and the second clamping member to swing, so that the circuit board is placed, which is beneficial to increasing the flushing area of the circuit board and improving the cleaning effect.

[0017] Preferably, a swing housing is fixedly installed at the end of the movable frame. The drive wheel and the drive wheel housing are installed inside the swing housing. The rotating shaft is of a hollow structure. A liquid pipeline is rotatably connected inside the rotating shaft. One end of the liquid pipeline is fixedly connected to the swing housing. A first infusion pipe is fixedly connected between the drive wheel housing and the liquid pipeline. Liquid outlets are formed in the liquid pipeline at the positions of the first clamping member and / or the second clamping member. A second infusion pipe is fixedly installed on the first clamping member and / or the second clamping member. The second infusion pipe is connected to the liquid outlet. Liquid outlet cavities are formed in the upper parts of the first clamping member and / or the second clamping member. The liquid outlet cavities are connected to the second infusion pipe. A limiting member capable of limiting the edge of the circuit board is slidably arranged in the liquid outlet cavity. A return spring is also connected between the limiting member and the liquid outlet cavity.

[0018] By adopting the above technical solution, the liquid in the drive wheel housing sequentially passes through the first infusion pipe, the liquid outlet, and the second infusion pipe and reaches the liquid outlet cavity, increasing the hydraulic pressure in the liquid outlet cavity. The hydraulic pressure pushes the limiting member to move, enabling the limiting member to limit the upper edge of the circuit board, thereby improving the firmness of the circuit board being fixed.

[0019] Preferably, liquid outlet holes are formed in the side wall of the liquid outlet cavity. The limiting member can seal the liquid outlet holes. A liquid outlet pipe connected to the liquid outlet holes is fixedly arranged on the first clamping member and / or the second clamping member. A plurality of spray holes are provided on the liquid outlet pipe.

[0020] By adopting the above technical solution, after the limiting member moves, on the one hand, it fixes the upper edge of the circuit board, and on the other hand, it opens the liquid outlet holes, allowing the liquid to enter the liquid outlet pipe and spray out from the spray holes of the liquid outlet pipe, thereby flushing the circuit board, which is beneficial to increasing the flushing area of the circuit board and improving the cleaning effect of the circuit board.

[0021] Preferably, liquid outlets are also provided at the position of the second clamping member on the liquid pipeline. A corresponding second infusion pipe is also fixedly installed on the second clamping member. The second infusion pipe is connected to the liquid outlet. A liquid outlet cavity is also formed in the upper part of the second clamping member. The liquid outlet cavity is connected to the second infusion pipe. A limiting member capable of limiting the edge of the circuit board is slidably arranged in the liquid outlet cavity. A return spring is also connected between the limiting member and the liquid outlet cavity. Liquid outlet holes are formed in the side wall of the liquid outlet cavity. The limiting member can seal the liquid outlet holes. A liquid outlet pipe connected to the liquid outlet holes is fixedly arranged on the second clamping member. A plurality of spray holes are provided on the liquid outlet pipe.

[0022] By adopting the above technical solution, liquid outlet pipes and limiting members are provided on both the first clamping member and the second clamping member. The limiting members limit both sides of the upper edge of the circuit board, and the liquid sprays out from the spray holes of the liquid outlet pipe to flush both sides of the circuit board, enhancing the cleaning effect.

[0023] On the other hand, the present invention provides a method for cleaning a circuit board, using the above-mentioned circuit board cleaning device, comprising the following steps:

[0024] Step S1: Install the circuit board to be cleaned between the first clamping member and the second clamping member. Inject liquid into the liquid injection cavity. The hydraulic pressure pushes the piston rod and the moving frame to move horizontally. The moving frame drives the rotating shaft to move, and the rotating shaft drives the first clamping member to approach the second clamping member to fix the circuit board.

[0025] Step S2: Continue to inject liquid into the liquid injection cavity. The liquid enters the liquid injection pipe and drives the driving wheel to rotate. The driving wheel drives the swinging wheel to swing through the link mechanism. The swinging wheel drives the rotating shaft to swing, and then drives the first clamping member and the second clamping member to swing, causing the circuit board to swing.

[0026] Step S3: The spraying device sprays the cleaning liquid to rinse the circuit board.

[0027] Step S4: After the circuit board is cleaned, turn off the spraying device and stop injecting liquid into the liquid injection cavity. The circuit board stops swinging. The piston rod resets under the elastic force of the elastic member, and then drives the moving frame and the rotating shaft to move in the reverse direction, causing the first clamping member and the second clamping member to move away from each other, and remove the cleaned circuit board.

[0028] By adopting the above technical solution, injecting liquid into the liquid injection cavity, the hydraulic pressure drives the driving wheel to rotate, so that the circuit board realizes reciprocating deflection within a certain range, increasing the rinsing area of the spraying device for the circuit board, reducing the cleaning dead angle, improving the cleaning effect. At the same time, before cleaning, through the movement of the first clamping member, the first clamping member and the second clamping member clamp the circuit board, thereby fixing the circuit board, reducing the shaking during the deflection of the circuit board, and reducing the damage to the components on the circuit board caused by the circuit board detaching from the first clamping member and the second clamping member.

[0029] The beneficial effects of the above technical solutions of the present invention are as follows:

[0030] 1. The driving member of the present invention drives the circuit board to realize reciprocating deflection within a certain range, increasing the rinsing area of the spraying device for the circuit board, reducing the cleaning dead angle, improving the cleaning effect. At the same time, before cleaning, through the movement of the first clamping member, the first clamping member and the second clamping member clamp the circuit board, thereby fixing the circuit board, reducing the shaking during the deflection of the circuit board, and reducing the damage to the components on the circuit board caused by the circuit board detaching from the first clamping member and the second clamping member.

[0031] 2. The two sides of the circuit board of the present invention are clamped by the first clamping plate and the second clamping plate, and the lower edge of the circuit board is clamped by the third clamping plate, so that the position of the circuit board is fixed, and the upper edge of the circuit board is limited by the limiting plate. The four sides of the circuit board are fixed, which is beneficial to improving the firmness of the circuit board installed on the clamping assembly.

[0032] 3. The driving wheel of the driving member of the present invention is hydraulically driven, and the liquid that pushes the driving wheel to rotate is ejected from the side of the first clamping member and / or the second clamping member to wash the circuit board, which is beneficial to increasing the washing area of the circuit board and improving the cleaning effect of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the circuit board cleaning device of the present invention;

[0034] Figure 2 is a schematic structural diagram of the receiving rack pulled out of the box body of the present invention;

[0035] Figure 3 is a schematic structural diagram of the moving component of the present invention;

[0036] Figure 4 is a cross-sectional view of the moving component and the clamping component of the present invention;

[0037] Figure 5 is Figure 4 an enlarged view of part A in

[0038] Figure 6 is a cross-sectional view of the first clamping member of the present invention;

[0039] Figure 7 is a cross-sectional view of the second clamping member of the present invention;

[0040] Figure 8 is a partial structural schematic diagram of the driving member of the present invention.

[0041] In the figure: 1. Box body; 2. Spraying device; 3. Receiving rack; 4. Moving component; 41. Liquid injection cavity; 411. Liquid injection hole; 42. Piston rod; 43. Moving frame; 44. Elastic member; 45. Liquid injection pipe; 5. Clamping component; 51. Rotating shaft; 511. Liquid pipeline; 512. Third clamping plate; 52. First clamping member; 521. First clamping plate; 53. Second clamping member; 531. Second clamping plate; 532. Collar; 54. Driving member; 541. Driving wheel; 542. Oscillating wheel; 543. Link mechanism; 544. Driving wheel housing; 545. Oscillating housing; 546. First infusion pipe; 547. Second infusion pipe; 548. Liquid outlet cavity; 549. Liquid outlet; 55. Limiting member; 551. Return spring; 56. Liquid outlet pipe; 561. Liquid outlet hole; 562. Spray hole; 6. Circuit board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will combine the Figures 1-8, the technical solutions of the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0043] Embodiment

[0044] This embodiment provides a circuit board cleaning device, as Figure 1 shown, including a box body 1, a spraying device 2 and a clamping device.

[0045] As Figure 1 shown, both the spraying device 2 and the clamping device are arranged in the box body 1. The spraying device 2 is used to spray the cleaning liquid to achieve the spraying and cleaning of the circuit board 6. This is the prior art and will not be elaborated here.

[0046] As Figure 1 shown, the clamping device includes a receiving frame 3, a moving component 4 and a clamping component 5.

[0047] As Figure 1 shown, the receiving frame 3 is slidably connected in the box body 1 and is used to receive the moving component 4 and the clamping component 5. The clamping component 5 is used to clamp the circuit board 6. When in use, as Figure 2 shown, first pull the receiving frame 3 to slide the receiving frame 3 out of the box body 1, then clamp the circuit board 6 on the clamping component 5, and then slide the receiving frame 3 back into the box body 1.

[0048] As Figure 3 shown, the moving component 4 includes a liquid injection cavity 41, a piston rod 42 and a moving frame 43.

[0049] As Figure 3 and Figure 4 shown, the liquid injection cavity 41 is fixedly arranged on one side of the receiving frame 3. The piston rod 42 is slidably arranged in the liquid injection cavity 41. The moving frame 43 is slidably arranged on the receiving frame 3. The moving direction of the moving frame 43 is perpendicular to the moving direction of the receiving frame 3. The end of the piston rod 42 is fixedly connected to the moving frame 43. The axial direction of the piston rod 42 is parallel to the moving direction of the moving frame 43. An elastic member 44 is also connected between the liquid injection cavity 41 and the moving frame 43. The elastic member 44 is a spring. Specifically, the spring is sleeved on the piston rod 42, and the two ends of the spring are respectively connected to the end of the piston rod 42 far from the moving frame 43 and the moving frame 43.

[0050] As Figure 3 shown, the clamping component 5 includes a rotating shaft 51, a clamping member one 52, a clamping member two 53 and a driving member 54.

[0051] As Figure 4 and Figure 5As shown, the rotating shaft 51 is rotatably connected to the moving frame 43, and the axis of the rotating shaft 51 is parallel to the axis of the piston rod 42. The rotating shaft 51 is of a hollow structure, and a liquid pipeline 511 is rotatably connected inside the rotating shaft 51, and the axis of the liquid pipeline 511 is collinear with the axis of the rotating shaft 51.

[0052] As Figure 3 and Figure 4 shown, the first clamping member 52 is fixedly installed on the rotating shaft 51, and a collar 532 is fixedly connected to the end of the second clamping member 53. A key connection is provided between the collar 532 and the rotating shaft 51 so that relative sliding can occur between the rotating shaft 51 and the second clamping member 53. A rotational connection is provided between the collar 532 and the receiving member so that the rotating shaft 51 can drive the second clamping member 53 to deflect. Both the first clamping member 52 and the second clamping member 53 are rod-shaped structures. The rotation of the rotating shaft 51 can drive the first clamping member 52 and the second clamping member 53 to rotate synchronously.

[0053] As Figure 4 and Figure 5 shown, a first clamping plate 521 is elastically connected to the side of the first clamping member 52 facing the second clamping member 53, a second clamping plate 531 is elastically connected to the side of the second clamping member 53 facing the first clamping member 52, and a third clamping plate 512 is elastically connected to the portion of the rotating shaft 51 between the first clamping member 52 and the second clamping member 53. The first clamping plate 521, the second clamping plate 531, and the third clamping plate 512 are all used to clamp the edge of the circuit board 6.

[0054] As Figure 8 shown, the driving member 54 includes a driving wheel 541, a swinging wheel 542, and a linkage mechanism 543.

[0055] As Figure 4 and Figure 5 shown, the driving wheel 541 is rotatably arranged at one end of the moving frame 43 close to the piston rod 42. A liquid injection hole 411 is provided on the side wall of the liquid injection cavity 41, and the piston rod 42 can seal the liquid injection hole 411. The axis of the central shaft of the driving wheel 541 is parallel to the axis of the rotating shaft 51. A driving wheel housing 544 is installed outside the driving wheel 541, and a liquid injection pipe 45 is connected between the driving wheel housing 544 and the liquid injection hole 411. As the piston rod 42 slides in the liquid injection cavity 41, the piston rod 42 can control the opening and closing of the liquid injection hole 411.

[0056] As Figure 4 and Figure 5 shown, the swinging wheel 542 is fixedly installed on the rotating shaft 51, and the end face of the swinging wheel 542 is parallel to the end face of the driving wheel 541. The first clamping member 52 is fixedly connected to the end face of the swinging wheel 542 at the end far from the driving wheel 541.

[0057] As Figure 4 and Figure 5As shown, the connecting rod mechanism 543 is connected to the central axis of the driving wheel 541 and the end face of the swinging wheel 542 near one end of the driving wheel 541. The connecting rod mechanism 543 is a double connecting rod structure with two articulated sections.

[0058] As Figure 4 and Figure 5 shown, liquid is injected into the liquid injection chamber 41. The hydraulic pressure in the liquid injection chamber 41 increases, and the hydraulic pressure pushes the piston rod 42 and the moving frame 43 to move horizontally. The moving frame 43 drives the rotating shaft 51 to move synchronously. The rotating shaft 51 drives the clamping member 52 to approach the clamping member 53, so that the clamping member 52 and the clamping member 53 clamp the circuit board 6, thereby fixing the circuit board 6. After the piston rod 42 moves, the liquid injection hole 411 opens, and liquid is continuously injected into the liquid injection chamber 41. The liquid enters the liquid injection pipe 45 through the liquid injection hole 411 and enters the driving wheel housing 544, thereby driving the driving wheel 541 to rotate. The driving wheel 541 drives the swinging wheel 542 to reciprocate within a certain range through the connecting rod mechanism 543. The swinging wheel 542 drives the rotating shaft 51 to move synchronously, and then drives the clamping member 52 and the clamping member 53 to swing, so that the circuit board 6 swings.

[0059] As Figures 4-6 shown, a swinging housing 545 is fixedly installed at the end of the moving frame 43 near the driving wheel 541. The driving wheel 541 and the driving wheel housing 544 are installed in the swinging housing 545. One end of the liquid pipeline 511 in the rotating shaft 51 is fixedly connected to the swinging housing 545. A liquid infusion pipe 546 is fixedly connected between the driving wheel housing 544 and the liquid pipeline 511. An outlet port 549 is opened at the position of the liquid pipeline 511 where the clamping member 52 is located. Liquid infusion pipes 547 are fixedly installed on both sides of the clamping member 52. The liquid infusion pipes 547 pass through the rotating shaft 51 and are connected to the outlet port 549. An outlet liquid chamber 548 is opened in the upper part of the clamping member 52. The outlet liquid chamber 548 is connected to the liquid infusion pipe 547. A limiting member 55 that can limit the edge of the circuit board 6 is slidably provided in the outlet liquid chamber 548. A return spring 551 is also connected between the limiting member 55 and the outlet liquid chamber 548.

[0060] As Figure 6 shown, liquid outlet holes 561 are opened on the side wall of the outlet liquid chamber 548. The limiting member 55 can seal the liquid outlet holes 561. Liquid outlet pipes 56 that are connected to the liquid outlet holes 561 are fixedly provided on both sides of the clamping member 52. A plurality of spray holes 562 are provided on the liquid outlet pipes 56.

[0061] As Figures 4-6As shown, the liquid in the driving wheel housing 544 sequentially passes through the first infusion tube 546, the liquid outlet 549, and the second infusion tube 547 to reach the liquid outlet cavity 548, increasing the hydraulic pressure in the liquid outlet cavity 548. The hydraulic pressure pushes the limiting member 55 to move. After the limiting member 55 moves, on the one hand, the limiting member 55 limits the upper edge of the circuit board 6, improving the firmness of the fixed circuit board 6. On the other hand, the liquid outlet hole 561 is opened, and the liquid enters the liquid outlet tube 56 and is ejected from the spray holes 562 of the liquid outlet tube 56, thereby flushing the circuit board 6, which is beneficial to increasing the flushing area of the circuit board 6 and improving the cleaning effect of the circuit board 6. This liquid can be a cleaning liquid.

[0062] As a preferred embodiment of this example, as Figure 4 and Figure 7 shown, the liquid pipeline 511 may also be provided with a liquid outlet 549 at the position of the second clamping member 53. The corresponding second clamping member 53 is also fixedly installed with a second infusion tube 547. The second infusion tube 547 is connected to the liquid outlet 549. The upper part of the second clamping member 53 is also provided with a liquid outlet cavity 548. The liquid outlet cavity 548 is connected to the second infusion tube 547. A limiting member 55 capable of limiting the edge of the circuit board 6 is slidably arranged in the liquid outlet cavity 548. A return spring 551 is also connected between the limiting member 55 and the liquid outlet cavity 548. A liquid outlet hole 561 is opened on the side wall of the liquid outlet cavity 548. The limiting member 55 can seal the liquid outlet hole 561. The second clamping member 53 is fixedly provided with a liquid outlet tube 56 connected to the liquid outlet hole 561. The liquid outlet tube 56 is provided with a plurality of spray holes 562. The advantage of this design is that the liquid outlet tubes 56 and the limiting members 55 are provided on both the first clamping member 52 and the second clamping member 53. The limiting member 55 limits both sides of the upper edge of the circuit board 6, and the liquid is ejected from the spray holes 562 on the liquid outlet tube 56 to flush both sides of the circuit board 6, enhancing the cleaning effect.

[0063] A plurality of first clamping members 52 and second clamping members 53 are arranged along the axis direction of the rotating shaft 51. One rotating shaft 51 can drive the plurality of first clamping members 52 and second clamping members 53 to deflect synchronously. A plurality of moving components 4 and clamping components 5 are arranged on the receiving frame 3 along the moving direction of the receiving frame 3. In addition, the receiving frame 3 is also arranged in two layers up and down, which can realize the cleaning of multiple circuit boards 6 and is beneficial to improving the cleaning efficiency.

[0064] A circuit board cleaning method using the above circuit board cleaning device includes the following steps:

[0065] Step S1: Pull the receiving frame 3 out of the box body 1, install the circuit board 6 to be cleaned between the first clamping member 52 and the second clamping member 53, then push the receiving frame 3 into the box body 1, inject liquid into the liquid injection cavity 41, the hydraulic pressure pushes the piston rod 42 and the moving frame 43 to move horizontally, the moving frame 43 drives the rotating shaft 51 to move, and the rotating shaft 51 drives the first clamping member 52 to approach the second clamping member 53 to fix the circuit board 6;

[0066] Step S2: Continue to inject liquid into the liquid injection cavity 41. The liquid enters the driving wheel housing 544 through the liquid injection pipe 45 and drives the driving wheel 541 to rotate. The driving wheel 541 drives the swing wheel 542 to swing through the link mechanism 543. The swing wheel 542 drives the rotating shaft 51 to swing, and then drives the clamping member one 52 and the clamping member two 53 to swing, so that the circuit board 6 swings;

[0067] Step S3: The liquid in the driving wheel housing 544 sequentially passes through the first infusion pipe 546, the liquid outlet 549, and the second infusion pipe 547 and reaches the liquid outlet cavity 548, increasing the hydraulic pressure in the liquid outlet cavity 548. The hydraulic pressure pushes the limiting member 55 to move. After the limiting member 55 moves, on the one hand, the limiting member 55 limits the upper edge of the circuit board 6, improving the firmness of the fixed circuit board 6. On the other hand, the liquid outlet hole 561 is opened, and the liquid enters the liquid outlet pipe 56 and sprays out from the spray hole 562 of the liquid outlet pipe 56, thereby flushing the circuit board 6;

[0068] Step S4: Start the spraying device 2, and the spraying device 2 sprays the cleaning liquid to flush the circuit board 6;

[0069] Step S5: After the circuit board 6 is cleaned, turn off the spraying device 2 and stop injecting liquid into the liquid injection cavity 41. The circuit board 6 stops swinging. The hydraulic pressure in the liquid outlet cavity 548 and the liquid injection cavity 41 decreases. The limiting member 55 resets under the elastic force of the return spring 551, and the piston rod 42 resets under the elastic force of the elastic member 44, and then drives the moving frame 43 and the rotating shaft 51 to move in the reverse direction, so that the clamping member one 52 and the clamping member two 53 move away from each other, pull out the receiving frame 3 from the box body 1, take out the cleaned circuit board 6, and then push the receiving frame 3 into the box body 1.

[0070] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0071] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle described in the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A circuit board cleaning device, comprising a box, a spray device and a clamping device arranged in the box, characterized in that: The clamping device comprises a receiving frame slidably connected to the box body, a moving component arranged on the receiving frame and a clamping component for clamping the circuit board; The moving assembly includes a liquid injection cavity fixedly arranged on one side of the receiving frame and provided with a liquid injection hole on the side wall, a piston rod slidably installed in the liquid injection cavity, and a moving frame fixedly connected to the end of the piston rod and slidably connected to the receiving frame, the piston rod can seal the liquid injection hole, an elastic member is connected between the piston rod and the moving frame, and a swing housing is fixedly installed at the end of the moving frame; The clamping assembly includes a hollow rotating shaft rotatably connected to the mobile frame, a clamping member 1 fixedly connected to the rotating shaft, a clamping member 2 slidably connected to the rotating shaft, and a driving member for driving the rotating shaft to rotate. A liquid pipeline is rotatably connected in the rotating shaft, one end of the liquid pipeline is fixedly connected to the swing housing, the clamping member 2 is rotatably connected to the receiving frame, and the piston rod drives the mobile frame to move horizontally, so that the clamping member 1 approaches the clamping member 2. The driving member comprises a driving wheel arranged on the moving frame near one end of the piston rod, a swing wheel fixedly connected to the rotating shaft, and a connecting rod mechanism connected between the central axis of the driving wheel and the end face of the swing wheel. A driving wheel housing is arranged on the outside of the driving wheel, and the driving wheel and the driving wheel housing are arranged in the swing housing. A liquid injection tube in the liquid injection hole is connected between the driving wheel housing and the liquid injection cavity. Liquid is injected into the liquid injection cavity, and after the hydraulic pressure pushes the piston rod to move, the liquid injection hole is opened, and the liquid in the liquid injection cavity enters the liquid injection tube through the liquid injection hole to drive the driving wheel to rotate. A liquid infusion tube 1 is fixedly connected between the driving wheel housing and the liquid pipeline, a liquid outlet is provided on the liquid pipeline at a position located at the clamping member 1 and / or the clamping member 2, a liquid infusion tube 2 connected to the liquid outlet is fixedly installed on the clamping member 1 and / or the clamping member 2, a liquid outlet cavity connected to the liquid infusion tube 2 is provided on the upper part of the clamping member 1 and / or the clamping member 2, a liquid outlet hole is provided on the side wall of the liquid outlet cavity, a limiting member that can limit the edge of the circuit board and seal the liquid outlet hole is slidably provided in the liquid outlet cavity, and a reset spring is connected between the limiting member and the liquid outlet cavity; A liquid outlet pipe connected to the liquid outlet hole is fixedly provided on the clamping member 1 and / or the clamping member 2, and a plurality of spray holes are provided on the liquid outlet pipe.

2. The circuit board cleaning device according to claim 1, characterized in that: A clamping plate 1 is elastically connected to one side of the clamping member 1 facing the clamping member 2, and a clamping plate 2 is elastically connected to one side of the clamping member 2 facing the clamping member 1. The clamping plates 1 and 2 are used to clamp the two sides of the circuit board.

3. The circuit board cleaning device according to claim 2, characterized in that: A clamping plate 3 is elastically connected to a portion of the rotating shaft between the clamping member 1 and the clamping member 2, and the clamping plate 3 is used for clamping the edge of the circuit board.

4. The circuit board cleaning device according to claim 1, characterized in that: A liquid outlet is also provided on the liquid pipeline at the position of the clamping piece 2, and a liquid infusion tube 2 is also fixedly installed on the corresponding clamping piece 2, and the liquid infusion tube 2 is connected to the liquid outlet. A liquid outlet cavity is also provided on the upper part of the clamping piece 2, and the liquid outlet cavity is connected to the liquid infusion tube 2. A limiter is slidably provided in the liquid outlet cavity and can limit the edge of the circuit board. A reset spring is also connected between the limiter and the liquid outlet cavity. A liquid outlet hole is provided on the side wall of the liquid outlet cavity, and the limiter can seal the liquid outlet hole. A liquid outlet tube connected to the liquid outlet hole is fixedly provided on the clamping piece 2, and a plurality of spray holes are provided on the liquid outlet tube.

5. A circuit board cleaning method, using the circuit board cleaning device according to claim 1, characterized in that: The following steps are involved: Step S1: Install the circuit board to be cleaned between the clamping member 1 and the clamping member 2, inject liquid into the liquid injection chamber, hydraulically push the piston rod and the moving frame to move horizontally, the moving frame drives the rotating shaft to move, and the rotating shaft drives the clamping member 1 to approach the clamping member 2 to fix the circuit board; Step S2: Continue to inject liquid into the injection cavity, the liquid enters the injection tube and drives the driving wheel to rotate, the driving wheel drives the swing wheel to swing through the connecting rod mechanism, the swing wheel drives the rotating shaft to swing, and then drives the clamping member 1 and the clamping member 2 to swing, so that the circuit board swings; Step S3: the spray device sprays cleaning liquid to rinse the circuit board; Step S4: After the circuit board is cleaned, the spray device is turned off, the injection of liquid into the injection chamber is stopped, the circuit board stops swinging, and the piston rod is reset under the elastic force of the elastic member, thereby driving the movable frame and the rotating shaft to move in the opposite direction, so that the clamping member 1 and the clamping member 2 are separated, and the cleaned circuit board is removed.

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