Circuit board cleaning device and cleaning method

Abstract

The invention provides a circuit board cleaning device and method, and belongs to the technical field of circuit board cleaning, the cleaning device comprises a box body, a spraying device and a clamping device, the clamping device comprises a bearing frame, a moving assembly and a clamping assembly, and the moving assembly and the clamping assembly are arranged on the bearing frame; the moving assembly comprises a liquid injection cavity, a piston rod and a moving frame. An elastic piece is further connected between the piston rod and the moving frame. The clamping assembly comprises a rotating shaft, a first clamping piece, a second clamping piece and a driving piece, the second clamping piece is rotationally connected with the bearing frame, and the piston rod drives the moving frame to move horizontally, so that the first clamping piece is close to the second clamping piece. The driving piece drives the circuit board to achieve reciprocating deflection within a certain range, the area of the spraying device for washing the circuit board is increased, cleaning dead angles are reduced, the first clamping piece and the second clamping piece clamp the circuit board through movement of the first clamping piece, and therefore the circuit board is fixed, and shaking in the deflection process of the circuit board is reduced.

Description

Technical Field

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

[0002] Circuit boards are often used to connect and support electronic components. They are usually composed of an insulating substrate and a metal foil with conductive circuits printed on it. In the production and manufacturing process of circuit boards, soldering is often required to fix and connect circuit components to the circuits on the circuit board. In the soldering process, solder paste, solder, solder wire, etc. are used for soldering. The flux in the soldering process may produce residues on the surface of the circuit board to form pollution. In addition, dust and other dirt will also adhere to the recycled circuit boards, and the circuit boards need to be cleaned.

[0003] Spraying is a method of cleaning circuit boards. During cleaning, multiple circuit boards are placed in a cleaning frame, fixed by a fixing device, and then placed in a cabinet-type spray device, cleaned by a nozzle, and dried after cleaning. For example, a patent document with announcement number CN118287426B discloses a computer circuit board cleaning device, which includes a cleaning pool, a conveyor belt installed at the center of the cleaning pool, a top plate and a clamping assembly installed on the conveyor belt, a nozzle installed on the top plate, and a clamping assembly for clamping 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 surfaces on both sides of the middle are hollowed out. Through soaking, rinsing and drying, combined with the circular conveying of the conveyor belt, the cleaning of the circuit board can be completed according to the process.

[0004] When the nozzle of the above-mentioned cleaning device cleans the circuit board, due to the fixed position of the nozzle, the circuit board will generally only be flushed from one side. However, there are electronic components connected to the circuit board, especially for double-sided boards. When the nozzle flushes one side of the circuit board, the obstructed part of the circuit board cannot be flushed by the nozzle due to the obstruction of the electronic components or the top surface of the double-sided board. After the cleaning liquid sprayed from the nozzle is sprayed onto the circuit board, it contacts the obstructed 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 the cleaning effect of the part of the circuit board flushed by the nozzle. Therefore, it is necessary to develop a circuit board cleaning device and a cleaning method to solve the technical problem that when the circuit board is cleaned by the spray method, there are many obstructed parts of the circuit board that cannot be flushed by the nozzle, 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 solves the technical problem that when the circuit board is cleaned by the spray method, a large part of the circuit board is blocked and the nozzle cannot rinse it, resulting in an unsatisfactory cleaning effect by fixing the circuit board before spraying and allowing the circuit board to swing.

[0006] In order to solve the above technical problems, on the one hand, the present invention provides a circuit board cleaning device, comprising a box body, a spray device and a clamping device arranged in the box body, wherein 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, 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, and an elastic member is also connected between the piston rod and the moving frame; The clamping assembly includes a 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. 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 includes a driving wheel arranged on a movable frame near one end of a piston rod, a swinging wheel fixedly connected to a rotating shaft, and a connecting rod mechanism connected between a central axis of the driving wheel and an end face of the swinging wheel. A driving wheel housing is installed on the outside of the driving wheel, and an injection tube is connected between the driving wheel housing and the injection chamber; the hydraulic energy in the injection tube drives the driving wheel to rotate.

[0007] By adopting the above technical scheme, the circuit board to be cleaned is first installed between the clamping member 1 and the clamping member 2, the circuit board is preliminarily positioned, and then liquid is injected into the injection cavity, the hydraulic pressure drives the piston rod and the movable frame to move horizontally, the movable frame drives the rotating shaft to move, the rotating shaft drives the clamping member 1 to approach the clamping member 2, so that the clamping member 1 and the clamping member 2 clamp the circuit board, thereby fixing the circuit board; the liquid is continuously injected into the injection cavity, the liquid enters the injection tube and the driving wheel housing, thereby driving the driving wheel to rotate, the driving wheel drives the swinging wheel to swing through the connecting rod mechanism, the swinging 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; then, the spray device sprays the cleaning liquid to rinse the circuit board; after the circuit board is cleaned, the spray device is closed, the liquid injection into the injection cavity is stopped, the circuit board stops swinging, the piston rod is reset under the elastic force of the elastic member, and then drives 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. The present invention drives the driving wheel to rotate by liquid, thereby making the circuit board realize reciprocating deflection within a certain range, thereby increasing the area of ​​the circuit board flushed by the spray device, reducing the dead angle of cleaning, and improving the cleaning effect. At the same time, before cleaning, the clamping member 1 and the clamping member 2 clamp the circuit board through the movement of the clamping member 1, thereby fixing the circuit board, reducing the shaking of the circuit board during the deflection process, and reducing the damage to the components on the circuit board caused by the circuit board detaching from the clamping member 1 and the clamping member 2.

[0008] Preferably, a side of clamping member 1 facing clamping member 2 is elastically connected with clamping plate 1, and a side of clamping member 2 facing clamping member 1 is elastically connected with clamping plate 2, and clamping plate 1 and clamping plate 2 are used to clamp two sides of the circuit board.

[0009] By adopting the above technical solution, when installing the circuit board, the circuit board is first installed on the first and second clamping plates, the first and second clamping plates preliminarily position the two sides of the circuit board, and then liquid is injected into the injection chamber, the hydraulic pressure drives the piston rod and the movable frame to move horizontally, the movable frame drives the rotating shaft to move, and the rotating shaft drives the clamping member 1 to approach the second clamping member, so that the first and second clamping members clamp the circuit board, thereby fixing the circuit board.

[0010] Preferably, a portion of the rotating shaft between the clamping member 1 and the clamping member 2 is elastically connected with a clamping plate 3, and the clamping plate 3 is used to clamp the edge of the circuit board.

[0011] By adopting the above technical solution, the positions of the bottom edges of the three pairs of circuit boards of the card board are fixed, and the positions of the two sides and the bottom plate of the circuit board are fixed, so that the position of the circuit board is determined, which is conducive to improving the stability of the circuit board fixation.

[0012] Preferably, an injection hole is provided on the side wall of the injection cavity, the piston rod can seal the injection hole, the injection tube is connected to the injection hole, liquid is injected into the injection cavity, after the hydraulic pressure pushes the piston rod to move, the injection hole opens, and the liquid in the injection cavity enters the injection tube through the injection hole.

[0013] By adopting the above technical scheme, after liquid is injected into the injection cavity, the hydraulic pressure first pushes the piston rod to move, and the movable rod drives the movable frame and the rotating shaft to move, so that the clamping member 1 and the clamping member 2 fix the circuit board. After the piston rod moves, the injection hole is opened, and liquid is continuously injected into the injection cavity. The liquid enters the injection tube through the 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 then drives the rotating shaft, the clamping member 1 and the clamping member 2 to swing, so that the circuit board is placed, which is beneficial to increase the area of ​​circuit board flushing and improve the cleaning effect.

[0014] Preferably, a swing shell is fixedly installed at the end of the movable frame, the driving wheel and the driving wheel shell are installed in the swing shell, the rotating shaft is a hollow structure, a liquid pipeline is rotatably connected in the rotating shaft, one end of the liquid pipeline is fixedly connected to the swing shell, an infusion tube 1 is fixedly connected between the driving wheel shell 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, an infusion tube 2 is fixedly installed on the clamping member 1 and / or the clamping member 2, the infusion tube 2 is connected with the liquid outlet, a liquid outlet cavity is provided on the upper part of the clamping member 1 and / or the clamping member 2, the liquid outlet cavity is connected with the infusion tube 2, a limiter is slidably provided in the liquid outlet cavity for limiting the edge of the circuit board, and a reset spring is also connected between the limiter and the liquid outlet cavity.

[0015] By adopting the above technical solution, the liquid in the driving wheel housing passes through the infusion tube 1, the liquid outlet, and the infusion tube 2 in sequence to reach the liquid outlet cavity, thereby increasing the hydraulic pressure in the liquid outlet cavity. The hydraulic pressure pushes the limiter to move, so that the limiter limits the edge of the upper part of the circuit board, thereby improving the firmness of the circuit board.

[0016] Preferably, a liquid outlet hole is opened on the side wall of the liquid outlet cavity, the limiting member can seal the liquid outlet hole, and 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.

[0017] By adopting the above technical solution, after the limiter moves, on the one hand, the upper edge of the circuit board is fixed, and on the other hand, the liquid outlet hole is opened, and the liquid enters the liquid outlet pipe and is sprayed out from the spray hole of the liquid outlet pipe, thereby flushing the circuit board, which is beneficial to increase the flushing area of ​​the circuit board and improve the cleaning effect of the circuit board.

[0018] Preferably, 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 limit member that can limit the edge of the circuit board is slidably provided in the liquid outlet cavity, and a reset spring is also connected between the limit member and the liquid outlet cavity. A liquid outlet hole is provided on the side wall of the liquid outlet cavity, and the limit member 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.

[0019] By adopting the above technical solution, a liquid outlet pipe and a limiter are provided on both the clamping member 1 and the clamping member 2. The limiter limits the two sides of the upper edge of the circuit board. Liquid is sprayed out from the spray holes on the liquid outlet pipe to flush the two sides of the circuit board, thereby enhancing the cleaning effect.

[0020] In another aspect, the present invention provides a circuit board cleaning method, using the circuit board cleaning device, comprising the following steps: 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.

[0021] By adopting the above technical solution, liquid is injected into the liquid injection chamber, and the hydraulic pressure drives the driving wheel to rotate, thereby causing the circuit board to realize reciprocating deflection within a certain range, thereby increasing the area of ​​the circuit board flushed by the spray device, reducing the dead angle of cleaning, and improving the cleaning effect. At the same time, before cleaning, the clamping member 1 and the clamping member 2 clamp the circuit board through the movement of the clamping member 1, 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 1 and the clamping member 2.

[0022] The beneficial effects of the above technical solution of the present invention are as follows: 1. The driving member of the present invention drives the circuit board to realize reciprocating deflection within a certain range, thereby increasing the area of ​​the circuit board flushed by the spray device, reducing the dead angle of cleaning, and improving the cleaning effect. At the same time, before cleaning, the clamping member 1 and the clamping member 2 clamp the circuit board through the movement of the clamping member 1, thereby fixing the circuit board, reducing the shaking of the circuit board during the deflection process, and reducing the damage to the components on the circuit board caused by the circuit board detaching from the clamping member 1 and the clamping member 2.

[0023] 2. The two sides of the circuit board of the present invention are clamped by clamping plate one and clamping plate two, and the lower edge of the circuit board is clamped by clamping plate three, so that the position of the circuit board is fixed, and the upper edge of the circuit board is limited by the limiting plate, and the four sides of the circuit board are fixed, which is beneficial to improve the firmness of the circuit board installed on the clamping assembly.

[0024] 3. The driving wheel of the driving member of the present invention is driven by hydraulic pressure, and the liquid that drives the driving wheel to rotate is sprayed out from the side of the clamping member 1 and / or the clamping member 2 to flush the circuit board, which is beneficial to increase the flushing area of ​​the circuit board and improve the cleaning effect of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the circuit board cleaning device of the present invention; Figure 2 It is a structural schematic diagram of the receiving frame of the present invention being pulled out of the box body; Figure 3 It is a structural schematic diagram of the mobile assembly of the present invention; Figure 4 is a cross-sectional view of the moving assembly and the clamping assembly of the present invention; Figure 5 for Figure 4 The enlarged view of point A in the middle; Figure 6 is a cross-sectional view of a clamping member 1 of the present invention; Figure 7 is a cross-sectional view of the second clamping member of the present invention; Figure 8 It is a schematic diagram of the partial structure of the driving member of the present invention.

[0026] In the figure: 1, box; 2, spray device; 3, receiving frame; 4, moving assembly; 41, injection chamber; 411, injection hole; 42, piston rod; 43, moving frame; 44, elastic member; 45, injection pipe; 5, clamping assembly; 51, rotating shaft; 511, liquid pipeline; 512, clamping plate three; 52, clamping member one; 521, clamping plate one; 53, clamping member two; 531, clamping plate two; 5 32. Ring; 54. Driving member; 541. Driving wheel; 542. Swinging wheel; 543. Connecting rod mechanism; 544. Driving wheel housing; 545. Swinging housing; 546. Infusion tube 1; 547. Infusion tube 2; 548. Liquid outlet cavity; 549. Liquid outlet; 55. Limiting member; 551. Return spring; 56. Liquid outlet tube; 561. Liquid outlet hole; 562. Spray hole; 6. Circuit board. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 8 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0028] Example This embodiment provides a circuit board cleaning device, such as Figure 1 As shown, it includes a box body 1, a spray device 2 and a clamping device.

[0029] like Figure 1 As shown, the spray device 2 and the clamping device are both arranged in the box body 1. The spray device 2 is used to spray the cleaning liquid to realize the spray cleaning of the circuit board 6. This is the prior art and will not be described in detail.

[0030] like Figure 1 As shown, the clamping device includes a receiving frame 3, a moving component 4 and a clamping component 5.

[0031] like Figure 1 As 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, Figure 2As shown, first pull the receiving frame 3 to slide the receiving frame 3 from the box body 1 to the outside, then clamp the circuit board 6 on the clamping assembly 5, and then slide the receiving frame 3 into the box body 1.

[0032] like Figure 3 As shown, the moving assembly 4 includes a liquid injection chamber 41 , a piston rod 42 and a moving frame 43 .

[0033] like Figure 3 and Figure 4 As shown, the injection chamber 41 is fixedly arranged on one side of the receiving frame 3, the piston rod 42 is slidably arranged in the injection chamber 41, and the moving frame 43 is slidably arranged on the receiving frame 3, and 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, and 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 injection chamber 41 and the moving frame 43, and 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 away from the moving frame 43 and the moving frame 43.

[0034] like Figure 3 As shown, the clamping assembly 5 includes a rotating shaft 51 , a clamping member 1 52 , a clamping member 2 53 and a driving member 54 .

[0035] like Figure 4 and Figure 5 As 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 a hollow structure, and a liquid pipeline 511 is rotatably connected inside the rotating shaft 51, and the axis of the liquid pipeline 511 and the rotating shaft 51 are colinear.

[0036] like Figure 3 and Figure 4 As shown, the clamping member 1 52 is fixedly mounted on the rotating shaft 51, and the end of the clamping member 2 53 is fixedly connected with a collar 532. The collar 532 and the rotating shaft 51 are connected by a key so that the rotating shaft 51 and the clamping member 2 53 can slide relative to each other. The collar 532 and the receiving member are rotatably connected so that the rotating shaft 51 can drive the clamping member 2 53 to deflect. The clamping member 1 52 and the clamping member 2 53 are both rod-shaped structures. The rotation of the rotating shaft 51 can drive the clamping member 1 52 and the clamping member 2 53 to rotate synchronously.

[0037] like Figure 4 and Figure 5As shown, the one side of the clamping member 1 52 facing the clamping member 2 53 is elastically connected to the clamping plate 1 521, the one side of the clamping member 2 53 facing the clamping member 1 52 is elastically connected to the clamping plate 2 531, and the part of the rotating shaft 51 between the clamping member 1 52 and the clamping member 2 53 is elastically connected to the clamping plate 3 512. The clamping plate 1 521, the clamping plate 2 531 and the clamping plate 3 512 are all used to clamp the edge of the circuit board 6.

[0038] like Figure 8 As shown, the driving member 54 includes a driving wheel 541 , a swing wheel 542 and a connecting rod mechanism 543 .

[0039] like Figure 4 and Figure 5 As shown, the driving wheel 541 is rotatably arranged on one end of the moving frame 43 near the piston rod 42, and a liquid injection hole 411 is arranged on the side wall of the liquid injection chamber 41, and the piston rod 42 can seal the liquid injection hole 411. The axis of the central axis of the driving wheel 541 is parallel to the axis of the rotating shaft 51. A driving wheel housing 544 is installed on the outside of 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 chamber 41, the piston rod 42 can control the opening and closing of the liquid injection hole 411.

[0040] like Figure 4 and Figure 5 As shown, the swing wheel 542 is fixedly mounted on the rotating shaft 51, and the end surface of the swing wheel 542 is parallel to the end surface of the driving wheel 541. The clamping member 1 52 is fixedly connected to the end surface of the swing wheel 542 away from the driving wheel 541.

[0041] like Figure 4 and Figure 5 As shown, the connecting rod mechanism 543 is connected to the central axis of the driving wheel 541 and the end surface of the swing wheel 542 close to one end of the driving wheel 541, and the connecting rod mechanism 543 is a double connecting rod structure with two hinged sections.

[0042] like Figure 4 and Figure 5As shown, liquid is injected into the injection cavity 41, and the hydraulic pressure in the injection cavity 41 increases, and the hydraulic pressure pushes the piston rod 42 and the moving frame 43 to move horizontally, and the moving frame 43 drives the rotating shaft 51 to move synchronously, and the rotating shaft 51 drives the clamping member 1 52 to approach the clamping member 2 53, so that the clamping member 1 52 and the clamping member 2 53 clamp the circuit board 6, thereby fixing the circuit board 6. After the piston rod 42 moves, the injection hole 411 is opened, and liquid continues to be injected into the injection cavity 41. The liquid enters the injection tube 45 and the driving wheel housing 544 through the injection hole 411, thereby driving the driving wheel 541 to rotate, and the driving wheel 541 drives the swing wheel 542 to realize reciprocating deflection within a certain range through the connecting rod mechanism 543, and the swing wheel 542 drives the rotating shaft 51 to move synchronously, thereby driving the clamping member 1 52 and the clamping member 2 53 to swing, so that the circuit board 6 swings.

[0043] like Figure 4-Figure 6 As shown, a swing shell 545 is fixedly installed on the end of the mobile frame 43 near the driving wheel 541, the driving wheel 541 and the driving wheel shell 544 are installed in the swing shell 545, one end of the liquid pipeline 511 in the rotating shaft 51 is fixedly connected to the swing shell 545, and an infusion tube 1 546 is fixedly connected between the driving wheel shell 544 and the liquid pipeline 511. A liquid outlet 549 is provided on the liquid pipeline 511 at the position of the clamping member 1 52, and an infusion tube 2 547 is fixedly installed on both sides of the clamping member 1 52. The infusion tube 2 547 passes through the rotating shaft 51 and is connected to the liquid outlet 549. A liquid outlet cavity 548 is provided on the upper part of the clamping member 1 52, and the liquid outlet cavity 548 is connected to the liquid infusion tube 2 547. A limiter 55 that can limit the edge of the circuit board 6 is slidably provided in the liquid outlet cavity 548, and a reset spring 551 is also connected between the limiter 55 and the liquid outlet cavity 548.

[0044] like Figure 6 As shown, a liquid outlet hole 561 is opened on the side wall of the liquid outlet cavity 548, and the limiting member 55 can seal the liquid outlet hole 561. Liquid outlet pipes 56 connected to the liquid outlet hole 561 are fixedly provided on both sides of the clamping member 52, and a plurality of spray holes 562 are provided on the liquid outlet pipe 56.

[0045] like Figure 4-Figure 6 As shown, the liquid in the driving wheel housing 544 passes through the first infusion tube 546, the liquid outlet 549, and the second infusion tube 547 in sequence to reach the liquid outlet cavity 548, so that the hydraulic pressure in the liquid outlet cavity 548 increases, and the hydraulic pressure pushes the limiter 55 to move. After the limiter 55 moves, on the one hand, the limiter 55 limits the edge of the upper part of the circuit board 6, thereby improving the firmness of the circuit board 6 being fixed, and on the other hand, the liquid outlet hole 561 is opened, and the liquid enters the liquid outlet tube 56 and is sprayed out from the spray hole 562 of the liquid outlet tube 56, thereby washing the circuit board 6, which is beneficial to increase the area of ​​the circuit board 6 to be washed and improve the cleaning effect of the circuit board 6. The liquid can be a cleaning liquid.

[0046] As a preferred method of this embodiment, Figure 4 and Figure 7 As shown, the portion of the liquid pipeline 511 located at the second clamping member 53 may also be provided with a liquid outlet 549, and the corresponding second clamping member 53 is also fixedly installed with a second infusion tube 547, which 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, which is connected to the second infusion tube 547. A limiter 55 capable of limiting the edge of the circuit board 6 is slidably provided in the liquid outlet cavity 548, and a return spring 551 is also connected between the limiter 55 and the liquid outlet cavity 548. A liquid outlet hole 561 is provided on the side wall of the liquid outlet cavity 548, and the limiter 55 can seal the liquid outlet hole 561. A liquid outlet tube 56 connected to the liquid outlet hole 561 is fixedly provided on the second clamping member 53, and a plurality of spray holes 562 are provided on the liquid outlet tube 56. The advantage of this design is that a liquid outlet pipe 56 and a limiting member 55 are provided on both the clamping member 1 52 and the clamping member 2 53. The limiting member 55 limits the two sides of the upper edge of the circuit board 6. Liquid is sprayed out from the spray hole 562 on the liquid outlet pipe 56 to flush the two sides of the circuit board 6, thereby enhancing the cleaning effect. A plurality of clamping members 1 52 and clamping members 2 53 are arranged along the axis direction of the rotating shaft 51. One rotating shaft 51 can drive the plurality of clamping members 1 52 and clamping members 2 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, which can realize the cleaning of a plurality of circuit boards 6, and is conducive to improving the cleaning efficiency.

[0047] A circuit board cleaning method, using the above circuit board cleaning device, comprises the following steps: Step S1: Pull the receiving frame 3 out of the box body 1, install the circuit board 6 to be cleaned between the clamping member 1 52 and the clamping member 2 53, then push the receiving frame 3 into the box body 1, inject liquid into the liquid injection chamber 41, hydraulically push 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 clamping member 1 52 to approach the clamping member 2 53 to fix the circuit board 6; Step S2: Continue to inject liquid into the injection cavity 41. The liquid enters the driving wheel housing 544 through the injection tube 45 and drives the driving wheel 541 to rotate. The driving wheel 541 drives the swing wheel 542 to swing through the connecting rod mechanism 543. The swing wheel 542 drives the rotating shaft 51 to swing, and then drives the clamping member 1 52 and the clamping member 2 53 to swing, so that the circuit board 6 swings. Step S3: The liquid in the driving wheel housing 544 passes through the first infusion tube 546, the liquid outlet 549, and the second infusion tube 547 in sequence to reach the liquid outlet cavity 548, so that the hydraulic pressure in the liquid outlet cavity 548 increases, and the hydraulic pressure pushes the limiter 55 to move. After the limiter 55 moves, on the one hand, the limiter 55 limits the edge of the upper part of the circuit board 6, thereby improving the firmness of the circuit board 6 being fixed, and on the other hand, the liquid outlet hole 561 is opened, and the liquid enters the liquid outlet tube 56 and is sprayed out from the spray hole 562 of the liquid outlet tube 56, thereby flushing the circuit board 6; Step S4: starting the spray device 2, and spraying the cleaning liquid to rinse the circuit board 6; Step S5: After the circuit board 6 is cleaned, the spray device 2 is closed, and the injection of liquid into the injection chamber 41 is stopped. The circuit board 6 stops swinging, and the hydraulic pressure in the liquid outlet chamber 548 and the injection chamber 41 is reduced. The limit member 55 is reset under the elastic force of the reset spring 551, and the piston rod 42 is reset under the elastic force of the elastic member 44, thereby driving the movable frame 43 and the rotating shaft 51 to move in the opposite direction, so that the clamping member 1 52 and the clamping member 2 53 are separated, and the receiving frame 3 is pulled out of the box body 1, the cleaned circuit board 6 is removed, and then the receiving frame 3 is pushed into the box body 1.

[0048] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of 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 circumstances.

[0049] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection 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, 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, and an elastic member is also connected between the piston rod and the moving frame; The clamping assembly includes a 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. 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 includes a driving wheel arranged on a movable frame near one end of a piston rod, a swinging wheel fixedly connected to a rotating shaft, and a connecting rod mechanism connected between a central axis of the driving wheel and an end face of the swinging wheel. A driving wheel housing is installed on the outside of the driving wheel, and an injection tube is connected between the driving wheel housing and the injection chamber; the hydraulic energy in the injection tube drives the driving wheel to rotate.

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: An injection hole is provided on the side wall of the injection cavity, and the piston rod can seal the injection hole. The injection tube is connected to the injection hole, and liquid is injected into the injection cavity. After the hydraulic pressure pushes the piston rod to move, the injection hole opens, and the liquid in the injection cavity enters the injection tube through the injection hole.

5. The circuit board cleaning device according to claim 4, characterized in that: A swing shell is fixedly installed at the end of the mobile frame, a driving wheel and a driving wheel shell are installed in the swing shell, the rotating shaft is a hollow structure, a liquid pipeline is rotatably connected in the rotating shaft, one end of the liquid pipeline is fixedly connected to the swing shell, an infusion tube 1 is fixedly connected between the driving wheel shell 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, an infusion tube 2 is fixedly installed on the clamping member 1 and / or the clamping member 2, the infusion tube 2 is connected to the liquid outlet, a liquid outlet cavity is provided on the upper part of the clamping member 1 and / or the clamping member 2, the liquid outlet cavity is connected to the infusion tube 2, a limiting member that can limit the edge of the circuit board is slidably provided in the liquid outlet cavity, and a reset spring is also connected between the limiting member and the liquid outlet cavity.

6. The circuit board cleaning device according to claim 5, characterized in that: A liquid outlet hole is opened on the side wall of the liquid outlet cavity, and the limiting member can seal the liquid outlet hole. 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.

7. The circuit board cleaning device according to claim 6, 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.

8. 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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