A circuit board ultrasonic cleaning device

Abstract

The present invention belongs to the technical field of circuit board cleaning, and specifically is an ultrasonic cleaning device for circuit boards, comprising a shell, a discharge port is provided on a side of the top of the shell away from a feed port, an ultrasonic generator is installed at one end of the shell, and a spray assembly for pre-cleaning is arranged inside the shell; the spray assembly comprises a fixed head fixed to an end of the shell away from the ultrasonic generator, an air guide cylinder is rotatably arranged at one end of the fixed head, an air guide pipe is arranged at an end of the air guide pipe away from the fixed head, a plurality of spray heads are arranged on one side of the air guide pipe, and the interiors of the fixed head, the air guide cylinder and the air guide pipe are connected; the surface of the circuit board can be cleaned through the air guide pipe, the range of the spray head is increased through the reciprocating rotation of the air guide pipe, and the cleaning area of ​​the circuit board is larger, the magnetic sleeve drives the flip rod to flip the rotation direction of the air guide cylinder, and the air drying can be carried out after ultrasonic cleaning, so that the two effects of cleaning and air drying can be achieved through one air guide pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit board cleaning, in particular to an ultrasonic cleaning device for a circuit board. Background Art

[0002] A circuit board is a carrier for installing electronic components. The circuit board can connect the circuits between electronic components. During production, the circuit board needs to go through multiple processing steps. In order to make the produced circuit boards cleaner, they need to be cleaned. Cleaning can remove the dirt remaining on the surface of the circuit board after welding.

[0003] Existing circuit board cleaning directly uses air blowing and cleaning liquid. When air blowing cleaning, the welding slag on the surface of the circuit board is easy to get stuck in the gaps of the electronic components welded on the surface of the circuit board. During ultrasonic cleaning, it takes more time to remove the stuck welding slag from the gaps of the electronic components, which affects the cleaning efficiency.

[0004] To this end, the present invention provides a circuit board ultrasonic cleaning device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the ultrasonic cleaning equipment for circuit boards described in the present invention comprises a shell, a feeding port is provided on one side of the top of the shell, a discharging port is provided on the side of the top of the shell away from the feeding port, an ultrasonic generator is installed at one end of the shell, ultrasonic transducers are installed on both sides of the bottom end inside the shell, the ultrasonic transducer and the ultrasonic generator are electrically connected, a clamping assembly for fixing the circuit board is arranged inside the shell, a moving assembly for moving the clamping assembly is arranged inside the shell, and a blowing assembly for pre-cleaning is arranged inside the shell; the blowing assembly comprises a fixed head fixed to the end of the shell away from the ultrasonic generator, an air guide cylinder is rotatably arranged at one end of the fixed head, an air guide tube is arranged at the end of the air guide tube away from the fixed head, a plurality of jet heads are arranged on one side of the air guide tube, and the interiors of the fixed head, the air guide cylinder and the air guide tube are connected.

[0007] Preferably, the clamping assembly includes a moving block arranged inside the shell, a support plate is fixed on one side of the moving block, two sets of sliding grooves are opened on the side of the support plate away from the moving block, a guide rod is fixed inside the sliding groove, a spring is sleeved on the outside of the guide rod, a clamping plate is slidably connected inside the sliding groove, the guide rod passes through the inside of the clamping plate, the spring is fixedly connected to the clamping plate, and one end of the clamping plate is rotatably connected to the clamping frame.

[0008] Preferably, the moving component includes a U-shaped frame fixed to the top end of the shell, a guide bar is fixed to the outside of the U-shaped frame, a tooth groove is provided inside the guide bar, a sliding hole matching the shape of the U-shaped frame and the guide bar is provided inside the moving block, a first motor is installed inside the moving block, a moving gear is fixed to the end of the rotating shaft of the first motor, and the moving gear is meshed with the guide bar through the tooth groove.

[0009] Preferably, an air guide hole is opened inside the air guide cylinder, the middle part of the air guide hole is rotatably connected to an impeller, a turntable is fixed to one side of the impeller, a transmission gear is rotatably connected to one side of the air guide cylinder close to the turntable, a connecting rod is movably connected to one side of the transmission gear, the other end of the connecting rod is movably connected to the turntable, a steering wheel is fixed to one end of the air guide pipe close to the air guide cylinder, the steering wheel is rotatably connected to one end of the air guide cylinder, and the transmission gear and the steering wheel are meshingly connected.

[0010] Preferably, a toothed disc is fixed on one side of the clamping frame close to the clamping plate, a second motor is installed on one end of the clamping plate close to the toothed disc, an output gear is fixed on the end of the rotating shaft of the second motor, and the output gear is meshingly connected with the toothed disc.

[0011] Preferably, the clamping plates are provided in two groups, and the clamping frames are also provided in two groups.

[0012] Preferably, an insert block is fixed to the bottom end of one end of one of the clamping frames, and a slot is provided at the bottom end of the other clamping frame near the insert block, and a plug-in structure is formed between the insert block and the slot.

[0013] Preferably, a support frame is fixed to one end of the support plate away from the ultrasonic transducer, one end of the support frame is rotatably connected to a magnetic sleeve, and a flip rod is fixed to one side of the air guide cylinder close to the support frame.

[0014] Preferably, a telescopic hole is opened inside the flip rod, a metal head is provided on the side of the flip rod away from the air guide cylinder, a telescopic rod is fixed on the side of the metal head close to the flip rod, and the telescopic rod is inserted into the telescopic hole of the flip rod.

[0015] Preferably, a limit block is provided above the flip rod, two limit blocks are provided, the two limit blocks are symmetrically distributed about the vertical center line of the air guide cylinder, and one end of the limit block is fixedly connected to the inner wall of the shell.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The circuit board ultrasonic cleaning device described in the present invention can clean the surface of the circuit board through an air duct. The reciprocating rotation of the air duct increases the range of the jet head, so that the cleaning area of ​​the circuit board is larger. The magnetic sleeve drives the flip rod to flip to rotate the air cylinder, and the air duct can be air-dried after ultrasonic cleaning. The two effects of cleaning and air drying are achieved through one air duct.

[0018] 2. The circuit board ultrasonic cleaning equipment described in the present invention divides the circuit board into three steps inside the shell through the cooperation of the U-shaped frame and the moving block, and separates the cleaning of surface residues from the ultrasonic cleaning, which can avoid the influence of airflow on the ultrasonic wave during the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a stereogram of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention;

[0022] Figure 3 It is a schematic diagram of the U-shaped frame structure in the present invention;

[0023] Figure 4 It is a schematic diagram of the internal structure of the moving block in the present invention;

[0024] Figure 5 It is a schematic diagram of the support plate structure in the present invention;

[0025] Figure 6 It is a schematic diagram of the support frame structure in the present invention;

[0026] Figure 7 It is a schematic diagram of the airway structure in the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the flip rod in the present invention;

[0028] Fig. 9 It is a schematic diagram of the internal structure of the gas guide cylinder in the present invention.

[0029] In the figure: 1, housing; 11, feed port; 12, discharge port; 2, ultrasonic generator; 21, ultrasonic transducer; 3, U-shaped frame; 31, guide bar; 32, tooth groove; 4, moving block; 41, slide hole; 411, first motor; 412, moving gear; 42, support plate; 421, slide groove; 422, guide rod; 423, spring; 43, support frame; 431, magnetic housing; 44, clamping plate ; 45. Clamping frame; 451. Toothed disc; 452. Second motor; 453. Insert block; 454. Slot; 5. Air duct; 51. Jet head; 52. Steering wheel; 53. Air cylinder; 531. Air hole; 532. Impeller; 533. Turntable; 534. Connecting rod; 535. Transmission gear; 54. Fixed head; 55. Flip rod; 551. Limit block; 552. Metal head; 553. Telescopic rod. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figure 1 to Figure 2 As shown, an ultrasonic cleaning device for a circuit board according to an embodiment of the present invention comprises a shell 1, a feeding port 11 is provided on one side of the top of the shell 1, a discharging port 12 is provided on one side of the top of the shell 1 away from the feeding port 11, an ultrasonic generator 2 is installed at one end of the shell 1, ultrasonic transducers 21 are installed on both sides of the bottom end of the shell 1, the ultrasonic transducer 21 and the ultrasonic generator 2 are electrically connected, a clamping assembly for fixing the circuit board is provided inside the shell 1, a moving assembly for moving the clamping assembly is provided inside the shell 1, and a spray assembly for pre-cleaning is provided inside the shell 1; the spray assembly comprises a fixed head 54 fixed to one end of the shell 1 away from the ultrasonic generator 2, an air guide cylinder 53 is rotatably provided at one end of the fixed head 54, an air guide tube 5 is provided at one end of the air guide tube 53 away from the fixed head 54, a plurality of spray heads 51 are provided on one side of the air guide tube 5, and the interiors of the fixed head 54, the air guide cylinder 53 and the air guide tube 5 are connected;

[0032] During operation, there will be flux and welding slag residue on the surface of the circuit board after welding components. During use, the welding slag connected to the pins of the components may cause a short circuit in the circuit board. Therefore, the surface of the circuit board needs to be cleaned, and the circuit board is put in from the position of the feed port 11. At this time, the circuit board is fixed by the clamping component, and then the moving component can transport the holding component holding the circuit board to the inside of the shell 1. During the transportation process, the welding slag on the surface of the circuit board is blown off by the blowing component, and gas is input to the fixed head 54 from the outside, and the fixed head 54 inputs the gas into the inside of the gas guide cylinder 53, and the gas is transported to the inside of the gas guide tube 5 through the gas guide cylinder 53. The gas guide tube 5 sprays the airflow through the nozzle 51 to pre-treat the surface of the circuit board. The residue and debris on the surface of the circuit board are cleaned, and then the moving component continues to drive the circuit board to be immersed in the cleaning liquid. The ultrasonic generator 2 controls the ultrasonic transducer 21 to generate ultrasonic waves so that the cleaning liquid inside the shell 1 cleans the circuit board. After cleaning, the moisture on the surface of the circuit board is blown dry by the blowing component to prevent the circuit board from being corroded. After drying, the moving component drives the circuit board to extend out from the discharge port 12, and then the circuit board can be removed, and then another circuit board to be cleaned is placed in the discharge port 12 and fixed by the clamping component. Then the moving component drives the circuit board to move in the opposite direction to clean the other circuit board. After cleaning, the clamping component is reset to the position of the feed port 11, and the circuit board can be cleaned by this reciprocating motion.

[0033] like Figures 4 to 5 As shown, the clamping assembly includes a moving block 4 arranged inside the housing 1, a support plate 42 is fixed to one side of the moving block 4, two sets of slide grooves 421 are opened on the side of the support plate 42 away from the moving block 4, a guide rod 422 is fixed inside the slide groove 421, a spring 423 is sleeved outside the guide rod 422, a clamping plate 44 is slidably connected inside the slide groove 421, the guide rod 422 runs through the inside of the clamping plate 44, the spring 423 is fixedly connected to the clamping plate 44, and one end of the clamping plate 44 is rotatably connected to a clamping frame 45;

[0034] When cleaning, push the clamping frame 45 to both sides, and the clamping frame 45 drives the clamping plate 44 to slide inside the slide groove 421. At this time, the clamping plate 44 can squeeze the spring 423, and then place the circuit board between the two clamping frames 45. At this time, release the clamping frame 45, and the elastic force of the spring 423 will push the two clamping plates 44 to move closer to the middle. At this time, the clamping plate 44 pushes the clamping frame 45 to clamp the circuit board.

[0035] like Figure 3 and Figure 4As shown, the moving assembly includes a U-shaped frame 3 fixed to the top of the inner part of the housing 1, a guide bar 31 is fixed to the outer side of the U-shaped frame 3, a tooth groove 32 is provided inside the guide bar 31, a sliding hole 41 matching the outer shape of the U-shaped frame 3 and the guide bar 31 is provided inside the moving block 4, a first motor 411 is installed inside the moving block 4, a moving gear 412 is fixed to the end of the rotating shaft of the first motor 411, and the moving gear 412 is meshed and connected with the guide bar 31 through the tooth groove 32;

[0036] After fixing the circuit board, the first motor 411 is started to drive the moving gear 412 to rotate. The moving gear 412 rotates and engages with the tooth groove 32 to drive the moving block 4 to move. At this time, the moving block 4 can move along the trajectory of the U-shaped frame 3 due to the limitation of the sliding hole 41 on the moving block 4.

[0037] like Fig. 9 As shown, an air guide hole 531 is provided inside the air guide cylinder 53, an impeller 532 is rotatably connected to the middle of the air guide hole 531, a turntable 533 is fixed to one side of the impeller 532, a transmission gear 535 is rotatably connected to one side of the air guide cylinder 53 close to the turntable 533, a connecting rod 534 is movably connected to one side of the transmission gear 535, the other end of the connecting rod 534 is movably connected to the turntable 533, a steering wheel 52 is fixed to one end of the air guide pipe 5 close to the air guide cylinder 53, the steering wheel 52 is rotatably connected to one end of the air guide cylinder 53, and the transmission gear 535 is meshedly connected to the steering wheel 52;

[0038] When the fixed head 54 inputs gas into the air guide cylinder 53, the gas will enter the inside of the air guide hole 531. At this time, the gas will contact the blades of the impeller 532 after passing through the inside of the air guide hole 531. The impeller 532 blades will drive the impeller 532 to rotate after being blown, and the impeller 532 will drive the turntable 533 to rotate. During the rotation of the turntable 533, the connecting rod 534 will be pulled back and forth. At this time, the connecting rod 534 can pull the transmission gear 535 to reciprocate. The rotation of the transmission gear 535 drives the steering wheel 52 to rotate. The rotation of the steering wheel 52 drives the air guide tube 5 to reciprocate. The air guide tube 5 drives the nozzle 51 to spray air in a fan shape, so that the air sprayed from the nozzle 51 can contact a larger area of ​​the circuit board.

[0039] like Figures 4 to 5 As shown, a toothed disc 451 is fixed to one side of the clamping frame 45 close to the clamping plate 44, a second motor 452 is installed to one end of the clamping plate 44 close to the toothed disc 451, an output gear is fixed to the end of the rotating shaft of the second motor 452, and the output gear is meshedly connected with the toothed disc 451;

[0040] After one side of the circuit board is blown, the second motor 452 is started to drive the output gear to rotate, the output gear drives the toothed disc 451 to rotate, the toothed disc 451 drives the clamping frame 45 to flip 180°, and the circuit board can be switched to the other side, and then the other side of the circuit board is cleaned. After cleaning, the moving block 4 drives the circuit board to immerse in the cleaning liquid. At this time, the ultrasonic generator 2 controls the ultrasonic transducer 21 to generate ultrasonic waves to clean the circuit board.

[0041] like Figure 4 and 5 As shown, the clamping plates 44 are provided in two groups, and the clamping frames 45 are also provided in two groups;

[0042] The two sets of clamping plates 44 and the clamping frame 45 can clamp the circuit board.

[0043] like Figure 5 As shown, an insert block 453 is fixed to the bottom end of one end of one clamping frame 45, and a slot 454 is provided at the bottom end of another clamping frame 45 near the insert block 453, and a plug-in structure is formed between the insert block 453 and the slot 454;

[0044] When there is no circuit board between the clamping frames 45 , the inserting block 453 will be inserted into the inside of the slot 454 , and at this time, the rotation of one of the clamping frames 45 will drive the other clamping frame 45 to rotate simultaneously.

[0045] like Figure 6 As shown, a support frame 43 is fixed to one end of the support plate 42 away from the ultrasonic transducer 21, a magnetic sleeve 431 is rotatably connected to one end of the support frame 43, and a flip rod 55 is fixed to one side of the air guide cylinder 53 close to the support frame 43;

[0046] When the moving block 4 moves downward, it will simultaneously drive the support frame 43 to move, and the support frame 43 will drive the magnetic shell 431 to move downward. After the magnetic shell 431 moves downward, it will contact the end of the flip rod 55 away from the air guide cylinder 53. At this time, the magnetic shell 431 will drive the flip rod 55 to flip, and the flip rod 55 flips and drives the air guide cylinder 53 to rotate. When the moving block 4 drives the circuit board to be ultrasonically cleaned inside the shell 1, the moving block 4 continues to move to the bottom of the discharge port 12. At this time, the moving block 4 drives the flip rod 55 to flip 180° through the magnetic shell 431. During this process, the direction of the nozzle 51 is always toward the circuit board. When the circuit board rises from the cleaning liquid, there will be moisture remaining on the surface of the circuit board. At this time, the nozzle 51 blows air to the circuit board to dry the moisture on the surface of the circuit board. At the same time, the clamping frame 45 drives the circuit board to flip and dry the moisture on the other side. Then the moving block 4 drives the clamping frame 45 to move to the position of the discharge port 12 to take out the circuit board. During this process, the clamping frame 45 is in a state with the open end facing up, which can facilitate the removal of the circuit board.

[0047] like Figures 7 and 8As shown, a telescopic hole is opened inside the flip rod 55, a metal head 552 is provided on the side of the flip rod 55 away from the air guide cylinder 53, a telescopic rod 553 is fixed on the side of the metal head 552 close to the flip rod 55, and the telescopic rod 553 is inserted into the telescopic hole of the flip rod 55;

[0048] When the magnetic sleeve 431 contacts one end of the flip rod 55, its magnetism will attract the metal head 552. At this time, the metal head 552 moves with the magnetic sleeve 431. During the movement, the distance between the magnetic sleeve 431 and the gas guide cylinder 53 will change. The metal head 552 pulls the telescopic rod 553 to extend and retract inside the telescopic hole of the flip rod 55 and can be adjusted according to the distance.

[0049] like Figure 7 As shown, a limit block 551 is provided above the flip rod 55, and two limit blocks 551 are provided. The two limit blocks 551 are symmetrically distributed about the vertical center line of the air guide cylinder 53, and one end of the limit block 551 is fixedly connected to the inner wall of the housing 1;

[0050] When the flip rod 55 flips, it needs to be limited so that it can only flip 180°. The limit block 551 can limit the flip rod 55. When the flip rod 55 is inserted into the limit block 551, the limit block 551 interferes with the flip rod 55, so that the magnetic sleeve 431 continues to move and can be separated from the metal head 552.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A circuit board ultrasonic cleaning device, characterized in that: The invention comprises a shell (1), a material inlet (11) is provided on one side of the top of the shell (1), a material outlet (12) is provided on one side of the top of the shell (1) away from the material inlet (11), an ultrasonic generator (2) is installed at one end of the shell (1), ultrasonic transducers (21) are installed on both sides of the bottom of the shell (1), the ultrasonic transducer (21) and the ultrasonic generator (2) are electrically connected, a clamping component for fixing a circuit board is provided inside the shell (1), a moving component for moving the clamping component is provided inside the shell (1), and a blowing component for pre-cleaning is provided inside the shell (1); The spray assembly comprises a fixed head (54) fixed to an end of the housing (1) away from the ultrasonic generator (2); an air guide cylinder (53) is rotatably mounted on one end of the fixed head (54); an air guide tube (5) is disposed at an end of the air guide tube (53) away from the fixed head (54); a plurality of spray heads (51) are disposed on one side of the air guide tube (5); and the interiors of the fixed head (54), the air guide cylinder (53) and the air guide tube (5) are connected; The clamping assembly comprises a moving block (4) arranged inside the housing (1), a support plate (42) being fixed on one side of the moving block (4), two sets of slide grooves (421) being provided on a side of the support plate (42) away from the moving block (4), a guide rod (422) being fixed inside the slide groove (421), a spring (423) being sleeved on the outside of the guide rod (422), a clamping plate (44) being slidably connected inside the slide groove (421), the guide rod (422) passing through the inside of the clamping plate (44), the spring (423) being fixedly connected to the clamping plate (44), and one end of the clamping plate (44) being rotatably connected to a clamping frame (45); The moving assembly comprises a U-shaped frame (3) fixed to the top end of the inner part of the housing (1); a guide bar (31) is fixed to the outer side of the U-shaped frame (3); a tooth groove (32) is provided inside the guide bar (31); a sliding hole (41) matching the outer shape of the U-shaped frame (3) and the guide bar (31) is provided inside the moving block (4); a first motor (411) is installed inside the moving block (4); a moving gear (412) is fixed to the end of the rotating shaft of the first motor (411); and the moving gear (412) is meshedly connected with the guide bar (31) through the tooth groove (32); An air guide hole (531) is provided inside the air guide cylinder (53), a central portion of the air guide hole (531) is rotatably connected to an impeller (532), a rotating disk (533) is fixed to one side of the impeller (532), a transmission gear (535) is rotatably connected to one side of the air guide cylinder (53) close to the rotating disk (533), a connecting rod (534) is movably connected to one side of the transmission gear (535), the other end of the connecting rod (534) is movably connected to the rotating disk (533), a steering wheel (52) is fixed to one end of the air guide pipe (5) close to the air guide cylinder (53), the steering wheel (52) is rotatably connected to one end of the air guide cylinder (53), and the transmission gear (535) and the steering wheel (52) are meshingly connected; A toothed disc (451) is fixed to one side of the clamping frame (45) close to the clamping plate (44); a second motor (452) is installed to one end of the clamping plate (44) close to the toothed disc (451); an output gear is fixed to the end of the rotating shaft of the second motor (452); the output gear is meshingly connected to the toothed disc (451); The clamping plates (44) are provided in two groups, and the clamping frames (45) are also provided in two groups; An insert block (453) is fixed to the bottom end of one end of one of the clamping frames (45), and a slot (454) is provided at the bottom end of the other clamping frame (45) close to the insert block (453), and a plug-in structure is formed between the insert block (453) and the slot (454); A support frame (43) is fixed to one end of the support plate (42) away from the ultrasonic transducer (21); one end of the support frame (43) is rotatably connected to a magnetic sleeve (431); and a flip rod (55) is fixed to one side of the air guide cylinder (53) close to the support frame (43).

2. The ultrasonic cleaning device for circuit boards according to claim 1, characterized in that: A telescopic hole is provided inside the flip rod (55); a metal head (552) is provided on a side of the flip rod (55) away from the air guide cylinder (53); a telescopic rod (553) is fixed on a side of the metal head (552) close to the flip rod (55); and the telescopic rod (553) is inserted into the telescopic hole of the flip rod (55).

3. The circuit board ultrasonic cleaning device according to claim 2, characterized in that: A limit block (551) is provided above the flip rod (55), two limit blocks (551) are provided, the two limit blocks (551) are symmetrically distributed about the vertical center line of the air guide cylinder (53), and one end of the limit block (551) is fixedly connected to the inner wall of the outer shell (1).

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