Surface residual liquid cleaning device for printed circuit board processing

Abstract

The invention discloses a surface residual liquid cleaning device for printed circuit board processing, which comprises an ultrasonic cleaning mechanism, the ultrasonic cleaning mechanism comprises a cleaning seat, and the bottom of the inner cavity of the cleaning seat is rotatably connected with a stirring rod; and the rotating mechanism is located at the top of the ultrasonic cleaning mechanism and rotationally connected with the ultrasonic cleaning mechanism, the rotating mechanism comprises a hollow pipe located at the top of the cleaning base, the left side and the right side of the surface of the hollow pipe are each sleeved with a round rotary table, and the left end of the hollow pipe communicates with an air inlet connector. The technical problems that in the using process of an existing surface residual liquid cleaning device for printed circuit board machining, residual liquid in the printed circuit board manufacturing process is inconvenient to efficiently and evenly clean, a circuit board is prone to being corroded and damaged, and the electrical performance of the printed circuit board can be reduced are solved.

Description

Technical Field

[0001] The invention relates to the technical field of printed circuit board processing, in particular to a surface residual liquid cleaning device used for printed circuit board processing. Background Art

[0002] During the processing of printed circuit boards, a variety of chemical solutions are used in multiple manufacturing processes. If these solutions are not completely cleaned after processing, they will remain to form residual liquids, such as etching solution residues, copper plating solution residues and developer residues. If these residual liquids are not thoroughly removed, they will not only affect the electrical performance of the circuit board, but may also cause corrosion, short circuits, reduced insulation performance and other problems.

[0003] The surface residual liquid cleaning device used in printed circuit board processing is a device designed to remove various contaminants remaining in the manufacturing process of printed circuit boards. If these contaminants are not cleaned up, they will affect the electrical performance and reliability of the printed circuit boards. The cleaning device usually uses physical or chemical methods to achieve efficient and precise cleaning effects. For example, ultrasonic cleaning is used. The impact force generated by the tiny bubbles generated by high-frequency sound waves when they burst in the liquid can remove dirt on the surface of the printed circuit board. It is suitable for cleaning small gaps and hidden areas.

[0004] A printed circuit board processing device with Chinese patent application number 201520859241.1 includes a printed circuit board processing device body, the printed circuit board processing device body includes a shell and a box cover, a filter screen for holding printed circuit boards is provided at a lower middle position of the box cover, an ultrasonic vibration plate is provided at a symmetrical position in the middle of the inner surface of the shell, a power interface is provided on the side wall of the outer surface at the lower middle position of the shell, the ultrasonic vibration plate and the power interface are connected in series, a magnet is provided at the middle position of the bottom inside the printed circuit board processing device body, the processing device uses an ultrasonic vibration plate to effectively remove residues, greatly improving the cleanliness and cleaning efficiency of the printed circuit board; and the electroplating liquid magnetized by the magnet can significantly improve the dispersion effect.

[0005] The Chinese patent application No. 201620292317.1 is a device for cleaning residual liquid in vias after surface treatment of a printed circuit board, comprising a frame, a cleaning tank is arranged on the frame, the cleaning tanks sequentially include a first cleaning tank, a second cleaning tank and a third cleaning tank, the first cleaning tank and the third cleaning tank are water washing tanks, an ultrasonic generator is arranged in the second cleaning tank, and a transmission wheel is arranged in the first cleaning tank, the second cleaning tank and the third cleaning tank, and the transmission wheel is used to transport the board to be cleaned. The device for cleaning residual liquid in vias after surface treatment of a printed circuit board, the ultrasonic generator generates ultrasonic waves, which can effectively improve the cleaning effect of residual liquid in vias after surface treatment of the printed circuit board, especially reduce the quality risk of corrosion of the copper layer in the vias of the board with incomplete (depressed) via solder mask oil after OSP solution; reduce the production of defective products and reduce production costs.

[0006] The existing surface residual liquid cleaning device for printed circuit board processing is not convenient for efficiently and evenly cleaning the residual liquid in the printed circuit board manufacturing process during use, which can easily cause the circuit board to be corroded and damaged, and also reduce the electrical performance of the printed circuit board. Summary of the invention

[0007] The technical problem to be solved by the present invention is that the existing surface residual liquid cleaning device for printed circuit board processing is not convenient for efficiently and evenly cleaning the residual liquid in the printed circuit board manufacturing process during use, which easily causes the circuit board to be corroded and damaged, and also reduces the electrical performance of the printed circuit board.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a surface residual liquid cleaning device for printed circuit board processing, comprising an ultrasonic cleaning mechanism, the ultrasonic cleaning mechanism comprising a cleaning seat, the bottom of the inner cavity of the cleaning seat is rotatably connected to a stirring rod; A rotating mechanism, the rotating mechanism is located on the top of the ultrasonic cleaning mechanism and is rotatably connected thereto, the rotating mechanism comprises a hollow tube located on the top of the cleaning seat, a circular turntable is sleeved on both the left and right sides of the surface of the hollow tube, and the left end of the hollow tube is connected to an air inlet joint; The clamping mechanism is a plurality of clamping mechanisms and is distributed around the inner cavity of the rotating mechanism. The clamping mechanism includes a clamping frame, and rotating heads are installed at both ends of the clamping frame. A fixed clamp is fixedly connected to the middle end of one side of the clamping frame, and movable clamps movably connected to the clamping frame are provided on the left and right sides of the fixed clamp; An annular mechanism, the annular mechanism is installed on one side of the ultrasonic cleaning mechanism, the annular mechanism comprises an annular frame, and a plurality of evenly distributed cam drive heads are installed on one side of the annular frame; A reciprocating drive mechanism, wherein the reciprocating drive mechanism is installed on one side of the ultrasonic cleaning mechanism, the rotating end of the reciprocating drive mechanism is connected to the rotating mechanism, and a controller is installed on the reciprocating drive mechanism; A spray cleaning mechanism, which is installed on the top of the rotating mechanism and is used to clean the printed circuit board inside the clamping mechanism; The drying mechanism is installed on the other side of the ultrasonic cleaning mechanism, the air outlet end of the drying mechanism is rotatably connected and communicated with the air inlet end of the rotating mechanism, the drying mechanism includes an air heater, and the air outlet end at the top of the air heater is connected to an air outlet member.

[0009] As a preferred solution of the surface residual liquid cleaning device for printed circuit board processing described in the present invention, wherein: a plurality of transducers are installed on both the front and rear sides of the bottom of the cleaning seat, an ultrasonic generator electrically connected to the transducer is installed on the front side of the cleaning seat, a support base supporting it is connected to the surface of the cleaning seat, a drain pipe is connected to the center of the bottom of the cleaning seat, a drain valve is installed at the bottom of the drain pipe, a plurality of stirring blades are installed on the surface of the stirring rod, and a limiting groove for accommodating a circular turntable is opened on the top of the cleaning seat.

[0010] As a preferred solution of the surface residual liquid cleaning device for printed circuit board processing described in the present invention, wherein: a one-way valve is installed at the air inlet end of the hollow tube, a plurality of hot air holes are opened on the surface of the hollow tube, a plurality of hot air nozzles connected with the hot air holes are installed on the inner wall of the hollow tube, the air outlet end of the air outlet member is located inside the air inlet joint and is rotatably connected to its inner wall, a mounting hole is opened on the circular turntable, and the rotating head is installed inside the mounting hole and is movably connected.

[0011] As a preferred scheme of the surface residual liquid cleaning device for printed circuit board processing described in the present invention, wherein: one side of the fixed clamp is fixedly connected to a plurality of supporting heads, the other side of the fixed clamp is movably connected to a clamping head, a threaded rod is installed at the center of the clamping head, the threaded rod is threadedly connected to the fixed clamp, the bottom of the inner wall of the clamping frame is fixedly connected to a limiting sliding rod, the movable clamp is movably sleeved on the surface of the limiting sliding rod, the rear side of the movable clamp is fixedly connected with a sliding part, the sliding part is movably connected to the clamping frame, the top of the inner wall of the clamping frame and the fixed clamp are rotatably connected with a double-headed screw rod, the movable clamp is threadedly sleeved on the surface of the double-headed screw rod, the middle end of the surface of the double-headed screw rod is sleeved with a large gear, and the rear side of the clamping frame is installed with a self-locking drive structure for driving the large gear.

[0012] As a preferred solution of the surface residual liquid cleaning device for printed circuit board processing described in the present invention, the self-locking drive structure includes a gear housing installed on the rear side of the clamping frame, a small gear rotatably connected to the inside of the gear housing and meshing with the large gear, a waterproof self-locking motor is installed on the surface of the gear housing, and the output shaft of the waterproof self-locking motor is connected to the small gear.

[0013] As a preferred solution of the surface residual liquid cleaning device for printed circuit board processing described in the present invention, wherein: a cam is installed on the rotating head, an extrusion rod is fixedly connected to the cam, a hollow arc frame is movably connected to the surface of the extrusion rod, the hollow arc frame is installed on the surface of the circular turntable, and arc-shaped rubber expansion joints connected to the extrusion rod are installed on the front and rear sides of the inner cavity of the hollow arc frame, and a spring is provided inside the arc-shaped rubber expansion joint.

[0014] As a preferred solution of the surface residual liquid cleaning device for printed circuit board processing described in the present invention, the cam driving head is located on the movement trajectory of the cam, and drives the cam to rotate when it contacts the cam, and the cam driving head is equipped with a reinforcing rib connected to the cam driving head, and the bottom of the annular frame is provided with a fixing part fixedly connected to the surface of the cleaning seat.

[0015] As a preferred solution of the surface residual liquid cleaning device for printed circuit board processing described in the present invention, wherein: the reciprocating drive mechanism includes a workbench, the bottom of the workbench is fixedly connected to a support frame, the support frame is fixedly connected to the surface of the cleaning seat, the top of the workbench is fixedly connected to a reducer, one side of the reducer is fixedly connected to a drive motor, the output shaft of the drive motor is fixedly connected to the input shaft of the reducer, the output shaft of the reducer is fixedly connected to an eccentric piece, one end of the eccentric piece is rotatably connected to a movable head, the surface of the movable head is movably connected to a movable frame, and the surface of the movable frame is movably connected to an installation A sliding seat is installed on the top of the workbench, one end of the movable frame extends to the left side of the sliding seat and is fixedly connected with a rack, the rack is movably connected to the surface of the sliding seat, a driving gear is meshed on the top of the rack, a driving rod is installed inside the driving gear, one end of the driving rod is connected to a hollow tube, and the other end of the driving rod is rotatably connected to a rotating seat, the rotating seat is installed on the sliding seat, an active transmission wheel is sleeved on the surface of the driving rod, a transmission belt is transmission-connected to the surface of the active transmission wheel, a driven transmission wheel is transmission-connected to the bottom of the inner wall of the transmission belt, and the driven transmission wheel is sleeved on the stirring rod to drive it.

[0016] As a preferred solution of the surface residual liquid cleaning device for printed circuit board processing described in the present invention, wherein: the spray cleaning mechanism includes a spray frame, and the left and right sides of the spray frame are provided with fixed frames fixedly connected to the surface of the cleaning seat, and the front and rear sides of the spray frame are rotatably connected with spray pipes, a stepper motor is fixedly installed on one side of the spray frame, and the output shaft of the stepper motor is fixedly connected to the spray pipe, and the bottom of the spray pipe is connected to a plurality of nozzles, and the top of the spray frame is respectively connected to a first hose and a second hose, and the second hose is connected to the first hose, and the liquid inlet end of the first hose is connected to a delivery pipe, and the liquid inlet end of the delivery pipe is connected to a liquid pump, and the liquid pump is used to extract the cleaning liquid for the printed circuit board, and the surface of the delivery pipe is provided with a limit plate installed on the surface of the cleaning seat.

[0017] As a preferred solution of the surface residual liquid cleaning device for printed circuit board processing described in the present invention, wherein: a temperature sensor is installed on the surface of the air outlet part, a limit frame is provided on the surface of the air heater, the limit frame is installed on the surface of the cleaning seat, the bottom of the limit frame is connected to a bent pipe, the air inlet end of the bent pipe is connected to a fan, and a plurality of electric heating tubes are installed around the inner wall of the air heater.

[0018] Beneficial effects of the present invention: 1. The present invention can facilitate spray cleaning and ultrasonic cleaning of printed circuit boards that need to be cleaned by using an ultrasonic cleaning mechanism and a spray cleaning mechanism in combination. The spray cleaning mechanism is arranged at the top for spray cleaning, and the ultrasonic cleaning mechanism is arranged at the bottom to collect the sprayed cleaning liquid and use ultrasonic waves to perform secondary ultrasonic cleaning on the printed circuit board. The spray cleaning mechanism can change the initial angle of flushing the surface of the printed circuit board through an adjustable angle nozzle to effectively remove residual pollutants, while the ultrasonic cleaning mechanism at the bottom can penetrate into tiny gaps and holes through the blasting effect of tiny bubbles generated in the cleaning liquid to remove smaller and hard-to-reach pollutants. The combination of the two realizes efficient and uniform cleaning of the surface and deep layers of the printed circuit board.

[0019] 2. The present invention provides a reciprocating drive mechanism, which can facilitate driving the rotating mechanism to reciprocate inside the ultrasonic cleaning mechanism. During the reciprocating rotation of the rotating mechanism, the plurality of clamping mechanisms inside the rotating mechanism are driven to rotate on the opposite side of the ultrasonic cleaning mechanism and the spray cleaning mechanism, so that the ultrasonic cleaning mechanism and the spray cleaning mechanism can clean a plurality of surrounding printed circuit boards, and enable the plurality of printed circuit boards to dynamically move and flip in the cleaning liquid, thereby increasing the contact area and time between the cleaning liquid and the surface of the circuit board and improving the cleaning efficiency. At the same time, such a movement mode also helps the cleaning liquid to better penetrate into every corner of the circuit board and improve the cleaning effect. The coordination of automation and mechanization reduces manual intervention, improves the continuity and automation level of the cleaning process, and makes batch cleaning of printed circuit boards more efficient and reduces production costs.

[0020] 3. The present invention, by providing an annular mechanism, can facilitate driving the clamping mechanism to swing back and forth inside the rotating mechanism. The annular mechanism is fixed on the ultrasonic cleaning mechanism and does not rotate with the rotating mechanism. In the process of the rotating mechanism driving the clamping mechanism to rotate, the clamping mechanism and the annular mechanism are in contact, and the annular mechanism drives the clamping mechanism to swing, so that the cleaning is more thorough. The swinging action helps the cleaning liquid to form a more active flow on the surface of the printed circuit board, promotes the contact and separation of the cleaning liquid and the pollutants, improves the use efficiency of the cleaning liquid, and reduces the consumption of the cleaning agent. The forward and backward swinging action changes the angle and direction of the cleaning liquid impacting the printed circuit board, which helps to eliminate the cleaning dead corners that may be formed by fixed-direction cleaning, and ensures the thorough cleaning of the entire printed circuit board surface. Moreover, the dynamic stress generated by the swing helps to loosen and detach the pollutants attached to the surface and embedded parts of the printed circuit board, especially for those residues that are difficult to remove by static immersion or linear motion alone. In the ultrasonic cleaning stage, the swinging action helps the bubbles generated by the ultrasonic wave to be more evenly distributed in the cleaning liquid, thereby improving the effect of ultrasonic cleaning.

[0021] 4. The present invention can facilitate heating and drying of the printed circuit board after cleaning inside the clamping mechanism through the coordinated use of the drying mechanism and the rotating mechanism. During the drying process, the hot air directly acts on the surface of the printed circuit board, quickly raising the temperature and accelerating the evaporation of residual water after cleaning, greatly shortening the drying time and improving production efficiency. During drying, the printed circuit board continues to move in multiple dimensions, and the hot air can contact the printed circuit board in multiple directions, ensuring the uniformity of drying and avoiding problems caused by local overheating or humidity. Moreover, the continuous dynamic movement helps to avoid the formation of fixed position aggregation of water droplets on the printed circuit board, thereby reducing the generation of water marks and spots and keeping the surface of the printed circuit board clean and smooth. Compared with static drying or high-temperature ovens, this method reduces the risk of thermal damage to the circuit board by controlling the appropriate temperature and hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the main axonometric view of the present invention; Figure 2 is a rear axonometric view of the present invention; Figure 3 It is a front axonometric view of the ultrasonic cleaning mechanism of the present invention; Figure 4 It is a bottom-up axonometric view of the ultrasonic cleaning mechanism of the present invention; Figure 5 It is a main axonometric view of the rotating mechanism of the present invention; Figure 6 It is a front axonometric view of the clamping mechanism of the present invention; Figure 7 It is a rear axonometric view of the clamping mechanism of the present invention; Figure 8 It is a partial cross-sectional view of the clamping mechanism of the present invention from the right side; Fig. 9 This is a main axonometric view of the self-locking drive structure of the present invention; Fig.10 It is a main axonometric view of the annular mechanism of the present invention; Fig.11 It is a front axonometric view of the reciprocating drive mechanism of the present invention; Fig.12 It is a left axonometric view of the reciprocating drive mechanism of the present invention; Fig.13 It is a main axonometric view of the spray cleaning mechanism of the present invention; Fig.14 It is a bottom-up axonometric view of the spray cleaning mechanism of the present invention; Fig.15 This is a main axonometric view of the drying mechanism of the present invention; Fig.16 It is a partial cross-sectional view of the drying mechanism of the present invention from the front view; Fig.17 It is a partial cross-sectional view of the rotating mechanism and the drying mechanism of the present invention; Fig.18 It is a right view of the first working state of the partial structure of the present invention when it rotates forward; Fig.19 It is an axonometric diagram of the first working state of the partial structure of the present invention when it rotates forward; Fig. 20 It is a right view of the second working state when the local structure of the present invention rotates forward; Fig.21 It is an axonometric diagram of the second working state of the partial structure of the present invention when it rotates forward; Fig. 22 It is a right view of the first working state when the local structure of the present invention is reversed; Fig.23It is an axonometric diagram of the first working state when the local structure of the present invention is reversed; Fig.24 It is a right view of the second working state when the local structure of the present invention is reversed; Fig.25 This is an axonometric diagram of the second working state when the local structure of the present invention is reversed.

[0023] In the figure: 100, ultrasonic cleaning mechanism; 101, cleaning seat; 102, stirring blade; 103, stirring rod; 104, transducer; 105, ultrasonic generator; 106, supporting base; 107, limiting groove; 108, drain pipe; 109, drain valve; 200, rotating mechanism; 201, hollow tube; 202, hot air hole; 203, mounting hole; 204, circular turntable; 205, air inlet joint; 206, one-way valve; 207, hot air nozzle; 300, clamping mechanism; 301, Clamping frame; 302, self-locking drive structure; 3021, gear housing; 3022, small gear; 3023, waterproof self-locking motor; 303, sliding member; 304, double-headed screw rod; 305, large gear; 306, fixing fixture; 307, rotating head; 308, hollow arc frame; 309, cam; 310, extrusion rod; 311, arc-shaped rubber retractor; 312, movable fixture; 313, supporting head; 314, clamping head; 315, threaded rod; 316, limit slide rod; 317, spring; 400, annular mechanism; 401, annular frame; 402, cam drive head; 403, reinforcing ribs; 404, fixing member; 500, reciprocating drive mechanism; 501, workbench; 502, movable head; 503, sliding seat; 504, rack; 505, movable frame; 506, driving rod; 507, active transmission wheel; 508, driving gear; 509, rotating seat; 510, eccentric member; 511, reducer; 512, driving motor; 513, support frame; 514, driven transmission wheel; 515, support frame; 516, support frame; 517, support frame; 518, support frame; 519, support frame; 520, support frame; 521, support frame; 522, support frame; 523, support frame; 524, support frame; 525, support frame; 526, support frame; 527, support frame; 528, support frame; 529, support frame; 530, support frame; 531, support frame; 532, support frame; 533, support frame; 534, support frame; 535, support frame; 536, support frame; 537, support frame; 538, support frame; 539, support frame; 540, support frame; 541, support frame; 542, support frame; 543, support frame; 544, support frame; 545, support frame; 546, support frame; 547, support frame; 548, support frame; 549, support frame; 550, support frame; 551, support frame; 552, support frame; 553, support frame; 554, support frame; 555, support frame; 556, 5. Transmission belt; 600. Spray cleaning mechanism; 601. Spray rack; 602. Second hose; 603. First hose; 604. Delivery pipe; 605. Fixing rack; 606. Limiting plate; 607. Liquid pump; 608. Stepping motor; 609. Spray head; 610. Spray pipe; 700. Drying mechanism; 701. Air heater; 702. Fan; 703. Bend pipe; 704. Limiting rack; 705. Air outlet; 706. Temperature sensor; 707. Electric heating pipe; 800. Controller. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] Embodiment 1, as Figure 1-25 As shown, this embodiment provides a surface residual liquid cleaning device for printed circuit board processing, including an ultrasonic cleaning mechanism 100, the ultrasonic cleaning mechanism 100 includes a cleaning seat 101, and a stirring rod 103 is rotatably connected to the bottom of the inner cavity of the cleaning seat 101.

[0027] Furthermore, a plurality of transducers 104 are installed on both the front and rear sides of the bottom of the cleaning seat 101, an ultrasonic generator 105 electrically connected to the transducer 104 is installed on the front side of the cleaning seat 101, a support base 106 supporting it is connected to the surface of the cleaning seat 101, a drain pipe 108 is connected to the center of the bottom of the cleaning seat 101, a drain valve 109 is installed at the bottom of the drain pipe 108, a plurality of stirring blades 102 are installed on the surface of the stirring rod 103, and a limiting groove 107 for accommodating the circular turntable 204 is opened on the top of the cleaning seat 101.

[0028] During the operation of the ultrasonic cleaning mechanism 100, the ultrasonic generator 105 converts the alternating current provided by the mains into high-frequency electrical energy, and a plurality of transducers 104 are respectively located on the front and rear sides of the bottom of the cleaning seat 101, converting the electrical energy into mechanical vibrations. These vibrations are transmitted into the cleaning liquid through the bottom of the cleaning seat 101, and the ultrasonic energy can evenly cover the cleaning area, thereby improving the cleaning efficiency. The ultrasonic energy in the cleaning liquid not only directly acts on the pollutants, causing them to separate from the substrate, but also the micro-explosions generated by the cavitation phenomenon can penetrate into tiny gaps and blind holes, thereby achieving the purpose of deep cleaning of the printed circuit board. During ultrasonic cleaning, the driving rod 506 of the reciprocating driving mechanism 500 drives the active transmission wheel 507 to rotate, and the active transmission wheel 507 drives the stirring rod 103 to rotate at the bottom of the inner cavity of the cleaning seat 101 through the transmission belt 515 and the driven transmission wheel 514, and the cleaning seat 101 drives a plurality of stirring blades 102 to stir the cleaning liquid at the bottom of the inner cavity of the cleaning seat 101, and the stirring blades 102 Movement can make the cleaning liquid flow, which can prevent the cleaning liquid from forming dead corners or static layers in the cleaning seat 101, ensure that ultrasonic energy and cleaning agents can be evenly distributed to every corner, and improve the comprehensiveness and consistency of cleaning. Ultrasonic cleaning mainly relies on the cavitation effect in the liquid to remove dirt. Stirring the cleaning liquid can promote the generation and rupture of bubbles, enhance the cavitation effect, and enable tiny bubbles to more effectively penetrate into tiny gaps and complexes, thereby improving cleaning efficiency. Moreover, the flowing cleaning liquid can take away the dirt particles that have fallen off more quickly, prevent them from being re-deposited on the surface of the printed circuit board, maintain the cleanliness of the cleaning liquid, and thus accelerate the cleaning process. When the cleaning liquid level inside the cleaning seat 101 is too high, open the drain valve 109 to discharge the cleaning liquid through the drain pipe 108 and the drain valve 109, so that the cleaning seat 101 can continue to collect the cleaning liquid. At the same time, discharging part of the cleaning liquid can take away the pollutants under cleaning, thereby improving the purity of the cleaning liquid inside the cleaning seat 101.

[0029] Furthermore, it also includes a rotating mechanism 200, which is located on the top of the ultrasonic cleaning mechanism 100 and is rotatably connected thereto. The rotating mechanism 200 includes a hollow tube 201 located on the top of the cleaning seat 101, and circular turntables 204 are provided on both sides of the surface of the hollow tube 201. The left end of the hollow tube 201 is connected to an air inlet connector 205.

[0030] Furthermore, a one-way valve 206 is installed at the air inlet end of the hollow tube 201, a plurality of hot air holes 202 are opened on the surface of the hollow tube 201, a plurality of hot air nozzles 207 connected with the hot air holes 202 are installed on the inner wall of the hollow tube 201, the air outlet end of the air outlet member 705 is located inside the air inlet joint 205 and is rotatably connected to its inner wall, a mounting hole 203 is opened on the circular turntable 204, and the rotating head 307 is installed inside the mounting hole 203 and is movably connected.

[0031] During the operation of the rotating mechanism 200, the reciprocating drive mechanism 500 drives the hollow tube 201 to rotate back and forth. During the rotation of the hollow tube 201, the circular turntable 204 is driven to rotate inside the limiting groove 107. The limiting groove 107 limits the circular turntable 204 to prevent it from leaving the cleaning seat 101. The rotating head 307 is installed inside the mounting hole 203 and rotates with the circular turntable 204 to realize the rotation of multiple clamping mechanisms 300.

[0032] Furthermore, it also includes a clamping mechanism 300, the number of which is several and distributed around the inner cavity of the rotating mechanism 200, the clamping mechanism 300 includes a clamping frame 301, and rotating heads 307 are installed on both ends of the clamping frame 301. A fixed clamp 306 is fixedly connected to the middle end of one side of the clamping frame 301, and movable clamps 312 movably connected to the clamping frame 301 are provided on the left and right sides of the fixed clamp 306.

[0033] Furthermore, one side of the fixed clamp 306 is fixedly connected to several support heads 313, and the other side of the fixed clamp 306 is movably connected to a clamping head 314, a threaded rod 315 is installed at the center of the clamping head 314, the threaded rod 315 is threadedly connected to the fixed clamp 306, the bottom of the inner wall of the clamping frame 301 is fixedly connected to a limiting slide bar 316, the movable clamp 312 is movably sleeved on the surface of the limiting slide bar 316, the rear side of the movable clamp 312 is fixedly connected to a sliding member 303, the sliding member 303 is movably connected to the clamping frame 301, a double-headed screw rod 304 is rotatably connected to the top of the inner wall of the clamping frame 301 and the fixed clamp 306, the movable clamp 312 is threadedly sleeved on the surface of the double-headed screw rod 304, a large gear 305 is sleeved on the middle end of the surface of the double-headed screw rod 304, and a self-locking drive structure 302 for driving the large gear 305 is installed on the rear side of the clamping frame 301.

[0034] Furthermore, the self-locking drive structure 302 includes a gear housing 3021 installed on the rear side of the clamping frame 301, and a small gear 3022 is rotatably connected inside the gear housing 3021 and meshes with the large gear 305. A waterproof self-locking motor 3023 is installed on the surface of the gear housing 3021, and the output shaft of the waterproof self-locking motor 3023 is connected to the small gear 3022.

[0035] Furthermore, a cam 309 is installed on the rotating head 307 at one end, an extrusion rod 310 is fixedly connected to the cam 309, a hollow arc frame 308 is movably connected to the surface of the extrusion rod 310, the hollow arc frame 308 is installed on the surface of the circular turntable 204, and arc-shaped rubber expansion joints 311 connected to the extrusion rod 310 are installed on the front and rear sides of the inner cavity of the hollow arc frame 308, and a spring 317 is provided inside the arc-shaped rubber expansion joint 311.

[0036] During the operation of the clamping mechanism 300, the printed circuit board to be cleaned is placed on the opposite side of the fixed clamp 306 and the movable clamp 312. The fixed clamp 306 and the movable clamp 312 are provided with clamping grooves adapted to the printed circuit board. The support head 313 is fitted with one side of the printed circuit board to support the printed circuit board. The clamping head 314 is rotated by the threaded rod 315 to move the clamping head 314 to the other side of the printed circuit board to clamp and fix the front and back sides of the printed circuit board. The output shaft of the waterproof self-locking motor 3023 drives the pinion gear 3022 rotates, the small gear 3022 drives the large gear 305 and the double-headed screw 304 to rotate, and the double-headed screw 304 drives the two movable clamps 312 to move relative to each other, so that the movable clamp 312 clamps and fixes the left or right side of the printed circuit board, and stably clamps the printed circuit board on the fixed clamp 306. During the movement of the movable clamp 312, the sliding member 303 is driven to slide inside the clamping frame 301 and slide on the surface of the limiting slide bar 316. The sliding member 303 and the limiting slide bar 316 prevent the movable clamp 312 from rotating during the movement.

[0037] Furthermore, it also includes an annular mechanism 400 , which is installed on one side of the ultrasonic cleaning mechanism 100 . The annular mechanism 400 includes an annular frame 401 , and a plurality of evenly distributed cam drive heads 402 are installed on one side of the annular frame 401 .

[0038] Furthermore, the cam driving head 402 is located on the motion trajectory of the cam 309, and drives the cam 309 to rotate when it contacts the cam 309. The cam driving head 402 is provided with a reinforcing rib 403 connected to the cam driving head 402, and a fixing part 404 fixedly connected to the surface of the cleaning seat 101 is provided at the bottom of the annular frame 401.

[0039] During the operation of the annular mechanism 400, it is convenient to drive the clamping mechanism 300 in the rotating process. When the clamping mechanism 300 rotates forward, the cam 309 contacts the front side of the cam driving head 402. During the contact process, the cam 309 swings upward, thereby driving the clamping mechanism 300 to swing forward as a whole to change the cleaning angle. When the clamping mechanism 300 reverses, the cam 309 contacts the rear side of the cam driving head 402. During the contact process, the cam 309 swings backward, thereby driving the clamping mechanism 300 to swing backward as a whole. During the swinging process of the cam 309, the extrusion rod 310 is driven in the hollow arc frame 308 The internal sliding of the cam 309 limits the swing angle of the cam 309, and the two springs 317 support the extrusion rod 310, so that the extrusion rod 310 can be reset to the midpoint after swinging, which is convenient for subsequent reciprocating swing. When the extrusion rod 310 slides inside the hollow arc frame 308, the arc-shaped rubber expansion joint 311 on one side is squeezed, and the arc-shaped rubber expansion joint 311 on the other side is expanded to realize the swing of the extrusion rod 310 and the cam 309. The spring 317 is arranged inside the arc-shaped rubber expansion joint 311. The spring 317 increases the supporting strength of the arc-shaped rubber expansion joint 311, which is convenient for resetting the extrusion rod 310.

[0040] By providing the annular mechanism 400, it is convenient to drive the clamping mechanism 300 to swing back and forth inside the rotating mechanism 200. The annular mechanism 400 is fixed on the ultrasonic cleaning mechanism 100 and does not rotate with the rotating mechanism 200. In the process of the rotating mechanism 200 driving the clamping mechanism 300 to rotate, the clamping mechanism 300 and the annular mechanism 400 are in contact, and the annular mechanism 400 drives the clamping mechanism 300 to swing, so that the cleaning is more thorough. The swinging action helps the cleaning liquid to form a more active flow on the surface of the printed circuit board, promotes the contact and separation of the cleaning liquid and the contaminants, improves the use efficiency of the cleaning liquid, and reduces the consumption of the cleaning agent. The forward and backward swinging action changes the angle and direction of the cleaning liquid impacting the printed circuit board, which helps to eliminate the cleaning dead corners that may be formed by fixed-direction cleaning, and ensures the thorough cleaning of the entire printed circuit board surface. In addition, the dynamic stress generated by the swing helps to loosen and detach the contaminants attached to the surface and embedded parts of the printed circuit board, especially for those residues that are difficult to remove by static immersion or linear motion alone. In the ultrasonic cleaning stage, the swinging action helps the bubbles generated by the ultrasonic wave to be more evenly distributed in the cleaning liquid, thereby improving the effect of ultrasonic cleaning.

[0041] Furthermore, it also includes a reciprocating drive mechanism 500 , which is installed on one side of the ultrasonic cleaning mechanism 100 , the rotating end of the reciprocating drive mechanism 500 is connected to the rotating mechanism 200 , and a controller 800 is installed on the reciprocating drive mechanism 500 .

[0042] Furthermore, the reciprocating drive mechanism 500 includes a workbench 501, a support frame 513 is fixedly connected to the bottom of the workbench 501, the support frame 513 is fixedly connected to the surface of the cleaning seat 101, a reducer 511 is fixedly connected to the top of the workbench 501, a drive motor 512 is fixedly connected to one side of the reducer 511, an output shaft of the drive motor 512 is fixedly connected to an input shaft of the reducer 511, an eccentric piece 510 is fixedly connected to the output shaft of the reducer 511, one end of the eccentric piece 510 is rotatably connected to a movable head 502, a movable frame 505 is movably connected to the surface of the movable head 502, a sliding seat 503 installed on the top of the workbench 501 is movably connected to the surface of the movable frame 505, and the movable frame 505 is movably connected to the sliding seat 503 installed on the top of the workbench 501. One end extends to the left side of the sliding seat 503 and is fixedly connected to a rack 504, the rack 504 is movably connected to the surface of the sliding seat 503, a driving gear 508 is meshed on the top of the rack 504, a driving rod 506 is installed inside the driving gear 508, one end of the driving rod 506 is connected to the hollow tube 201, and the other end of the driving rod 506 is rotatably connected to a rotating seat 509, and the rotating seat 509 is installed on the sliding seat 503, an active transmission wheel 507 is sleeved on the surface of the driving rod 506, and a transmission belt 515 is transmission-connected to the surface of the active transmission wheel 507, and a driven transmission wheel 514 is transmission-connected to the bottom of the inner wall of the transmission belt 515, and the driven transmission wheel 514 is sleeved on the stirring rod 103 to drive it.

[0043] During the operation of the reciprocating drive mechanism 500, the output shaft of the drive motor 512 drives the reducer 511 to rotate, and the output shaft of the reducer 511 drives the eccentric piece 510 to rotate. During the rotation of the eccentric piece 510, the movable head 502 is driven to reciprocate up and down inside the movable frame 505. During the up and down reciprocating movement of the movable head 502, the movable frame 505 is driven to reciprocate back and forth inside the sliding seat 503, thereby driving the rack 504 to reciprocate back and forth, and the rack 504 drives the driving gear 508 meshing with it to rotate back and forth. The driving gear 508 drives the hollow tube 201 to rotate through the driving rod 506. During the rotation of the driving rod 506, the stirring rod 103 is driven to rotate through the active transmission wheel 507, the transmission belt 515 and the driven transmission wheel 514. The rotating seat 509 limits the right end of the rotating driving rod 506 so that it can rotate stably.

[0044] By providing a reciprocating drive mechanism 500, it is possible to conveniently drive the rotating mechanism 200 to reciprocate inside the ultrasonic cleaning mechanism 100. During the reciprocating rotation of the rotating mechanism 200, the plurality of clamping mechanisms 300 inside the rotating mechanism 200 are driven to rotate on the opposite side of the ultrasonic cleaning mechanism 100 and the spray cleaning mechanism 600, so that the ultrasonic cleaning mechanism 100 and the spray cleaning mechanism 600 can clean a plurality of surrounding printed circuit boards, and enable the plurality of printed circuit boards to dynamically move and flip in the cleaning liquid, thereby increasing the contact area and time between the cleaning liquid and the surface of the circuit board and improving the cleaning efficiency. At the same time, such a movement mode also helps the cleaning liquid to better penetrate into every corner of the circuit board and improve the cleaning effect. The coordination of automation and mechanization reduces manual intervention, improves the continuity and automation level of the cleaning process, makes batch cleaning of printed circuit boards more efficient, and reduces production costs.

[0045] Furthermore, it also includes a spray cleaning mechanism 600 , which is installed on the top of the rotating mechanism 200 and is used to clean the printed circuit board inside the clamping mechanism 300 .

[0046] Furthermore, the spray cleaning mechanism 600 includes a spray rack 601, and the left and right sides of the spray rack 601 are provided with fixed racks 605 fixedly connected to the surface of the cleaning seat 101, the front and rear sides of the spray rack 601 are rotatably connected with spray pipes 610, a stepper motor 608 is fixedly installed on one side of the spray rack 601, and the output shaft of the stepper motor 608 is fixedly connected to the spray pipe 610, and a plurality of nozzles 609 are connected to the bottom of the spray pipe 610, and the top of the spray rack 601 is respectively connected to a first hose 603 and a second hose 602, the second hose 602 is connected to the first hose 603, the liquid inlet end of the first hose 603 is connected to a delivery pipe 604, and the liquid inlet end of the delivery pipe 604 is connected to a liquid pump 607, the liquid pump 607 is used to extract the cleaning liquid for the printed circuit board, and the surface of the delivery pipe 604 is provided with a limiting plate 606 installed on the surface of the cleaning seat 101.

[0047] During the operation of the spray cleaning mechanism 600, the liquid pump 607 draws external cleaning liquid, and uses cleaning liquid for the residual liquid components on the surface of the printed circuit board, so that the residual liquid on the printed circuit board can be efficiently cleaned. The cleaning liquid is transported to the first hose 603 through the delivery pipe 604, and enters the two spray pipes 610 at the same time through the second hose 602. The spray pipe 610 sprays the cleaning liquid through the nozzle 609, and the sprayed cleaning liquid contacts the surface of the printed circuit board to clean it. The spray pipe 610 can be rotated by the fixed frame 605 to adjust the initial cleaning angle of the nozzle 609. After adjusting the initial angle, the printed circuit board is rotated and swung for cleaning, thereby improving the cleaning efficiency.

[0048] By using the ultrasonic cleaning mechanism 100 and the spray cleaning mechanism 600 in coordination, it is possible to facilitate spray cleaning and ultrasonic cleaning of the printed circuit board that needs to be cleaned. The spray cleaning mechanism 600 is arranged at the top for spray cleaning, and the ultrasonic cleaning mechanism 100 is arranged at the bottom to collect the sprayed cleaning liquid and use ultrasonic waves to perform secondary ultrasonic cleaning on the printed circuit board. The spray cleaning mechanism 600 can change the initial angle of flushing the surface of the printed circuit board through the adjustable angle nozzle 609 to effectively remove residual contaminants, while the ultrasonic cleaning mechanism 100 at the bottom can penetrate into tiny gaps and holes through the blasting effect of tiny bubbles generated in the cleaning liquid to remove smaller and hard-to-reach contaminants. The combination of the two achieves efficient and uniform cleaning of the surface and deep layers of the printed circuit board.

[0049] Furthermore, it also includes a drying mechanism 700, which is installed on the other side of the ultrasonic cleaning mechanism 100. The air outlet end of the drying mechanism 700 is rotatably connected and communicated with the air inlet end of the rotating mechanism 200. The drying mechanism 700 includes an air heater 701, and the air outlet end at the top of the air heater 701 is connected to an air outlet member 705.

[0050] Furthermore, a temperature sensor 706 is installed on the surface of the air outlet piece 705, a limiting frame 704 is provided on the surface of the air heater 701, the limiting frame 704 is installed on the surface of the cleaning seat 101, a curved pipe 703 is connected to the bottom of the limiting frame 704, the air inlet end of the curved pipe 703 is connected to the fan 702, and a plurality of electric heating tubes 707 are installed around the inner wall of the air heater 701.

[0051] During the operation of the drying mechanism 700, the fan 702 draws in external air and delivers it to the air heater 701 through the curved pipe 703. The electric heating tube 707 inside the air heater 701 heats the air. The heated hot air is delivered to the air inlet connector 205 through the air outlet piece 705. A sealing structure is provided at the connection between the air inlet connector 205 and the air outlet piece 705. The hot air opens the one-way valve 206 and is ejected through the hot air nozzle 207 and the hot air hole 202 to dry the printed circuit board with hot air. The temperature sensor 706 detects the temperature of the hot air, and the detection signal is transmitted to the controller 800. The controller 800 controls the working parameters of the air heater 701 according to the detected temperature, thereby controlling the temperature of the hot air.

[0052] By using the drying mechanism 700 and the rotating mechanism 200 in coordination, the printed circuit board after cleaning inside the clamping mechanism 300 can be heated and dried. During the drying process, the hot air directly acts on the surface of the printed circuit board, rapidly raising the temperature and accelerating the evaporation of residual water after cleaning, thereby greatly shortening the drying time and improving production efficiency. During the drying process, the printed circuit board continues to move in multiple dimensions, and the hot air can contact the printed circuit board in multiple directions, ensuring the uniformity of drying and avoiding problems caused by local overheating or humidity. Moreover, the continuous dynamic movement helps to prevent water droplets from gathering in fixed positions on the printed circuit board, thereby reducing the generation of water marks and spots and keeping the surface of the printed circuit board clean and smooth. Compared with static drying or high-temperature ovens, this method reduces the risk of thermal damage to the circuit board by controlling appropriate temperature and hot air.

[0053] Embodiment 2, as Figure 1-25 As shown, this embodiment provides a method for using a surface residual liquid cleaning device for printed circuit board processing, comprising the following steps: Select appropriate cleaning liquid according to the characteristics of the printed circuit board, and start the liquid pump 607 to start circulation to ensure the supply of cleaning liquid.

[0054] Open the fixed clamp 306 and the movable clamp 312, and correctly place the printed circuit board to be cleaned between the clamps.

[0055] The position of the clamping head 314 is adjusted using the threaded rod 315 to ensure that the printed circuit board is securely clamped.

[0056] The double-ended screw 304 is operated by the self-locking drive structure 302 so that the movable clamp 312 fastens the printed circuit board to ensure that there is no slippage during the cleaning process.

[0057] The spray cleaning mechanism 600 is started, and the liquid pump 607 draws the cleaning liquid, and sprays the printed circuit board through the nozzle 609 to further remove the residual stains.

[0058] The ultrasonic cleaning mechanism 100 collects the sprayed cleaning liquid, starts the ultrasonic generator 105, converts the mains electricity into high-frequency electric energy to supply the transducer 104, generates ultrasonic vibration, and produces cavitation effect in the cleaning liquid.

[0059] The reciprocating drive mechanism 500 drives the stirring rod 103 to rotate, and the stirring blades 102 make the cleaning liquid flow, thereby improving the cleaning efficiency and uniformity.

[0060] The rotating mechanism 200 drives the clamping mechanism 300 to rotate to achieve multi-angle cleaning. At the same time, the cleaning angle can be changed through the swing controlled by the annular mechanism 400 to ensure all-round cleaning.

[0061] After cleaning is completed, the drying mechanism 700 is started, the fan 702 introduces air, and after being heated by the air heater 701, the hot air is dried on the printed circuit board through the hot air nozzle 207 and the hot air hole 202.

[0062] The temperature sensor 706 monitors the hot air temperature, and the controller 800 adjusts the power of the electric heating tube 707 according to the feedback to ensure the appropriate temperature and avoid thermal damage.

[0063] After drying, stop all mechanisms and wait for the printed circuit board to cool to room temperature.

[0064] The clamping mechanisms 300 are opened one by one, and the printed circuit boards are taken out for quality inspection to ensure that all residual liquids and stains have been thoroughly removed.

Claims

1. A surface residual liquid cleaning device for printed circuit board processing, characterized in that: include, An ultrasonic cleaning mechanism (100), the ultrasonic cleaning mechanism (100) comprising a cleaning seat (101), the bottom of the inner cavity of the cleaning seat (101) being rotatably connected to a stirring rod (103); A rotating mechanism (200), the rotating mechanism (200) being located on top of the ultrasonic cleaning mechanism (100) and being rotatably connected thereto, the rotating mechanism (200) comprising a hollow tube (201) located on top of the cleaning seat (101), circular turntables (204) being sleeved on both left and right sides of the surface of the hollow tube (201), and an air inlet joint (205) being connected to the left end of the hollow tube (201); A clamping mechanism (300), wherein the number of the clamping mechanisms (300) is plural and they are distributed around the inner cavity of the rotating mechanism (200), the clamping mechanism (300) comprises a clamping frame (301), the left and right ends of the clamping frame (301) are both provided with rotating heads (307), the middle end of one side of the clamping frame (301) is fixedly connected with a fixed clamp (306), and the left and right sides of the fixed clamp (306) are provided with movable clamps (312) movably connected to the clamping frame (301); An annular mechanism (400), the annular mechanism (400) being mounted on one side of the ultrasonic cleaning mechanism (100), the annular mechanism (400) comprising an annular frame (401), and a plurality of evenly distributed cam drive heads (402) being mounted on one side of the annular frame (401); A reciprocating drive mechanism (500), the reciprocating drive mechanism (500) being installed on one side of the ultrasonic cleaning mechanism (100), the rotating end of the reciprocating drive mechanism (500) being connected to the rotating mechanism (200), and a controller (800) being installed on the reciprocating drive mechanism (500); A spray cleaning mechanism (600), the spray cleaning mechanism (600) being mounted on the top of the rotating mechanism (200) and being used to clean the printed circuit board inside the clamping mechanism (300); A drying mechanism (700), wherein the drying mechanism (700) is installed on the other side of the ultrasonic cleaning mechanism (100), the air outlet end of the drying mechanism (700) is rotatably connected and communicated with the air inlet end of the rotating mechanism (200), and the drying mechanism (700) comprises an air heater (701), and the air outlet end at the top of the air heater (701) is communicated with an air outlet member (705).

2. The surface residual liquid cleaning device for printed circuit board processing according to claim 1, characterized in that: A plurality of transducers (104) are installed on both the front and rear sides of the bottom of the cleaning seat (101); an ultrasonic generator (105) electrically connected to the transducer (104) is installed on the front side of the cleaning seat (101); a support base (106) supporting the cleaning seat (101) is connected to the surface of the cleaning seat (101); a drain pipe (108) is connected to the center of the bottom of the cleaning seat (101); a drain valve (109) is installed at the bottom of the drain pipe (108); a plurality of stirring blades (102) are installed on the surface of the stirring rod (103); and a limiting groove (107) for accommodating a circular turntable (204) is provided at the top of the cleaning seat (101).

3. The surface residual liquid cleaning device for printed circuit board processing according to claim 1, characterized in that: A one-way valve (206) is installed at the air inlet end of the hollow tube (201); a plurality of hot air holes (202) are provided on the surface of the hollow tube (201); a plurality of hot air nozzles (207) connected to the hot air holes (202) are installed on the inner wall of the hollow tube (201); an air outlet end of the air outlet member (705) is located inside the air inlet joint (205) and is rotatably connected to the inner wall thereof; a mounting hole (203) is provided on the circular turntable (204); and the rotating head (307) is installed inside the mounting hole (203) and is movably connected thereto.

4. The surface residual liquid cleaning device for printed circuit board processing according to claim 1, characterized in that: One side of the fixed clamp (306) is fixedly connected to a plurality of support heads (313), and the other side of the fixed clamp (306) is movably connected to a clamping head (314). A threaded rod (315) is installed at the center of the clamping head (314), and the threaded rod (315) is threadedly connected to the fixed clamp (306). The bottom of the inner wall of the clamping frame (301) is fixedly connected to a limit slide rod (316), and the movable clamp (312) is movably sleeved on the surface of the limit slide rod (316). The movable clamp (312) ) is fixedly connected to the rear side with a sliding member (303), the sliding member (303) is movably connected to the clamping frame (301), the top of the inner wall of the clamping frame (301) and the fixed clamp (306) are rotatably connected with a double-headed screw (304), the movable clamp (312) is threadedly sleeved on the surface of the double-headed screw (304), the middle end of the surface of the double-headed screw (304) is sleeved with a large gear (305), and the rear side of the clamping frame (301) is installed with a self-locking drive structure (302) for driving the large gear (305).

5. The surface residual liquid cleaning device for printed circuit board processing according to claim 4, characterized in that: The self-locking drive structure (302) comprises a gear housing (3021) mounted on the rear side of the clamping frame (301); a small gear (3022) meshing with the large gear (305) is rotatably connected inside the gear housing (3021); a waterproof self-locking motor (3023) is mounted on the surface of the gear housing (3021); and an output shaft of the waterproof self-locking motor (3023) is connected to the small gear (3022).

6. The surface residual liquid cleaning device for printed circuit board processing according to claim 1, characterized in that: A cam (309) is mounted on the rotating head (307), an extrusion rod (310) is fixedly connected to the cam (309), a hollow arc frame (308) is movably connected to the surface of the extrusion rod (310), the hollow arc frame (308) is mounted on the surface of the circular turntable (204), and arc-shaped rubber expansion joints (311) connected to the extrusion rod (310) are mounted on both the front and rear sides of the inner cavity of the hollow arc frame (308), and a spring (317) is provided inside the arc-shaped rubber expansion joint (311).

7. The surface residual liquid cleaning device for printed circuit board processing according to claim 1, characterized in that: The cam driving head (402) is located on the movement track of the cam (309) and drives the cam (309) to rotate when in contact with the cam (309). A reinforcing rib (403) connected to the cam driving head (402) is installed on the cam driving head (402). A fixing piece (404) fixedly connected to the surface of the cleaning seat (101) is provided at the bottom of the annular frame (401).

8. The surface residual liquid cleaning device for printed circuit board processing according to claim 1, characterized in that: The reciprocating drive mechanism (500) comprises a workbench (501), the bottom of the workbench (501) is fixedly connected to a support frame (513), the support frame (513) is fixedly connected to the surface of the cleaning seat (101), the top of the workbench (501) is fixedly connected to a reducer (511), one side of the reducer (511) is fixedly connected to a drive motor (512), the output shaft of the drive motor (512) is fixedly connected to the input shaft of the reducer (511), the output shaft of the reducer (511) is fixedly connected to an eccentric piece (510), one end of the eccentric piece (510) is rotatably connected to a movable head (502), the surface of the movable head (502) is movably connected to a movable frame (505), the surface of the movable frame (505) is movably connected to a sliding seat (503) installed on the top of the workbench (501), and the movable frame (505) is fixedly connected to the sliding seat (503) installed on the top of the workbench (501), and the movable frame (505) is fixedly connected to the driving motor (512) on one side of the drive motor (512). The end of the driving rod (506) extends to the left side of the sliding seat (503) and is fixedly connected to a rack (504); the rack (504) is movably connected to the surface of the sliding seat (503); a driving gear (508) is meshed on the top of the rack (504); a driving rod (506) is installed inside the driving gear (508); one end of the driving rod (506) is connected to the hollow tube (201); the other end of the driving rod (506) is rotatably connected to a rotating seat (509); the rotating seat (509) is installed on the sliding seat (503); a driving drive wheel (507) is sleeved on the surface of the driving rod (506); a driving belt (515) is connected to the surface of the driving drive wheel (507); a driven drive wheel (514) is connected to the bottom of the inner wall of the driving belt (515); the driven drive wheel (514) is sleeved on the stirring rod (103) to drive it.

9. The surface residual liquid cleaning device for printed circuit board processing according to claim 1, characterized in that: The spray cleaning mechanism (600) comprises a spray frame (601), wherein the left and right sides of the spray frame (601) are provided with fixed frames (605) fixedly connected to the surface of the cleaning seat (101), the front and rear sides of the spray frame (601) are rotatably connected to spray pipes (610), a stepper motor (608) is fixedly installed on one side of the spray frame (601), the output shaft of the stepper motor (608) is fixedly connected to the spray pipe (610), and the bottom of the spray pipe (610) is connected to a plurality of spray heads (609). The top of the spray rack (601) is respectively connected to a first hose (603) and a second hose (602); the second hose (602) is connected to the first hose (603); the liquid inlet end of the first hose (603) is connected to a delivery pipe (604); the liquid inlet end of the delivery pipe (604) is connected to a liquid pump (607); the liquid pump (607) is used to extract cleaning liquid for the printed circuit board; the surface of the delivery pipe (604) is provided with a limit plate (606) mounted on the surface of the cleaning seat (101).

10. The surface residual liquid cleaning device for printed circuit board processing according to claim 1, characterized in that: A temperature sensor (706) is installed on the surface of the air outlet member (705); a limiting frame (704) is sleeved on the surface of the air heater (701); the limiting frame (704) is installed on the surface of the cleaning seat (101); a curved pipe (703) is connected to the bottom of the limiting frame (704); an air inlet end of the curved pipe (703) is connected to a fan (702); and a plurality of electric heating pipes (707) are installed around the inner wall of the air heater (701).

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