Automatic cleaning and stacking device for printed circuit board substrate

Abstract

The invention belongs to the technical field of circuit board conveying and processing equipment, and particularly relates to a printed circuit board substrate automatic cleaning and stacking device which comprises a rack and an automatic cleaning assembly arranged on the rack. The automatic cleaning assembly comprises a first conveying unit, a second conveying unit in transmission connection with the conveying tail end of the first conveying unit, and a bag stacking unit arranged at the conveying tail end of the second conveying unit. The spraying unit, the sweeping unit and the drying unit are arranged below the second conveying unit and are sequentially arranged in the conveying direction of the second conveying unit. Through sequential cooperation of the first conveying unit, the second conveying unit, the spraying unit, the sweeping unit, the drying unit and the bag stacking unit, automatic cleaning and stacking of the substrates can be achieved in the conveying process of the circuit board substrates, and therefore the production quality of circuit boards is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of circuit board conveying and processing equipment, and particularly relates to a printed circuit board substrate automatic cleaning and stacking device. BACKGROUND

[0002] Cleaning of the circuit board substrate is a key link to ensure the quality of subsequent processing (such as copper plating, etching, laminating, solder resist coating, etc.). Contaminants on the surface of the substrate can cause problems such as insufficient adhesion, uneven etching, and interlayer delamination.

[0003] Specifically, for example, during the welding, assembly or storage of the circuit board, due to excessive solder paste printing, large steel mesh hole, uneven welding temperature, poor solder flow, pad oxidation or insufficient flux activity, it is easy to cause solder aggregation, and then tin beads, flux traces or scratches on the bottom surface of the circuit board, which not only affects the appearance, but also may cause circuit reliability problems (such as short circuit, corrosion); for example, after the circuit board substrate is punched, the problem of waste residue in the hole.

[0004] In view of this, the present application provides a printed circuit board substrate automatic cleaning and stacking device to solve the above problems. SUMMARY

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a printed circuit board substrate automatic cleaning and stacking device, comprising: a rack, and an automatic cleaning assembly arranged on the rack;

[0006] The automatic cleaning assembly comprises a first conveying unit, a second conveying unit connected in transmission to the conveying end of the first conveying unit, a stacking unit arranged at the conveying end of the second conveying unit, and a spraying unit, a brushing unit and a drying unit arranged in sequence below the second conveying unit along its conveying direction; the substrate is conveyed by the first conveying unit and the second conveying unit, and is sequentially washed, cleaned and dried on the bottom surface of the substrate by the spraying unit, the brushing unit and the drying unit, and is neatly stacked at the stacking unit.

[0007] As a preferred printed circuit board substrate automatic cleaning and stacking device of the present application, the rack comprises a bottom wall, and side walls arranged opposite to each other on both sides of the bottom wall, and a conveying and cleaning channel of the substrate is formed between the opposite side walls, and the automatic cleaning assembly is arranged in the conveying and cleaning channel.

[0008] As a preferred printed circuit board substrate automatic cleaning and stacking device of the present application, the first conveying unit comprises a chain conveying device arranged at the beginning end of the conveying and cleaning channel.

[0009] The conveying end of the chain conveying device is provided with a transmission mechanism, and the chain conveying device is in transmission connection with the second conveying unit through the transmission mechanism.

[0010] Preferably, the transmission mechanism comprises a connecting frame arranged opposite to the conveying end of the chain conveying device, a transmission sprocket I rotatably connected to the connecting frame through a transmission shaft and in chain transmission connection with the chain conveying device, a transmission gear I axially connected to the other end of the transmission shaft and synchronously rotatable with the transmission sprocket I, and a transmission gear II in meshing connection with the transmission gear I.

[0011] Preferably, the second conveying unit comprises a clamping conveying part arranged opposite to each other.

[0012] The clamping conveying part comprises a protective shell fixedly connected to the side wall, a rotating shaft I rotatably connected to the bottom surface of each end of the protective shell and extending in a direction perpendicular to the axial direction of the transmission shaft, a driven sprocket II in chain transmission connection between the rotating shaft I through a chain II, and a clamping jaw arranged at equal intervals on the outer vertical surface of the chain II.

[0013] The transmission gear II is axially connected to the extended end of the rotating shaft I close to the conveying end of the chain conveying device.

[0014] Preferably, the clamping jaw comprises a supporting part for horizontally supporting the substrate, a clamping part connected to one end of the supporting part for limiting the substrate, and a connecting part connected to the top of the clamping part and fixedly connected to the outer vertical surface of the chain II.

[0015] Preferably, the spraying unit comprises a water tank connected to the bottom surface of the bottom wall and in communication with the conveying and cleaning channel, a booster arranged in the water tank, a connecting pipe connected to the output end of the booster and extending into the conveying and cleaning channel, and a spray head connected to the extended end of the connecting pipe and arranged opposite to the clamping conveying part.

[0016] A filter screen is arranged at the communication position between the water tank and the conveying and cleaning channel, and the top surface of the bottom wall is gradually recessed towards the communication position between the water tank and the conveying and cleaning channel from both ends.

[0017] Preferably, the brush unit comprises a rotating shaft II rotatably connected to the bottom surface of the protective shell, a driven sprocket III in chain transmission connection with the chain II and axially connected to the rotating shaft II, and a cleaning disc axially connected to the end of the rotating shaft II, and a wool surface for brushing the bottom surface of the substrate is detachably connected to the top surface of the cleaning disc.

[0018] Preferably, the drying unit comprises a mounting hole formed through the bottom wall, and a hot air device arranged in the mounting hole and relative to the second conveying unit.

[0019] Preferably, the stacking unit comprises a bearing frame communicated with the conveying end of the conveying and cleaning channel, and side plates and abutting plates connected to the adjacent edge surfaces of the bearing frame to form an enclosure.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] The first conveying unit, the second conveying unit, the spraying unit, the brushing unit, the drying unit and the stacking unit are sequentially matched, so that the substrate can be automatically cleaned and stacked during the conveying process of the substrate, thereby effectively improving the quality of the substrate. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation of the present application. In the drawings:

[0023] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0024] Figure 2 is a schematic view of the three-dimensional structure of the present application with the top cover opened;

[0025] Figure 3 is a schematic view of the rack cross-sectional structure of the present application;

[0026] Figure 4 is a schematic view of the conveying and cleaning channel cross-sectional structure of the present application;

[0027] Figure 5 is a schematic view of the main cross-sectional structure of the present application;

[0028] Figure 6 is a schematic view of the driving assembly structure of the present application;

[0029] Figure 7 is a schematic view of the transmission mechanism structure of the present application;

[0030] Figure 8 is a schematic view of the brushing unit structure of the present application;

[0031] Figure 9 is a schematic view of the stacking unit structure of the present application;

[0032] Figure 10A structure schematic view of clamping a substrate by the clamping jaw of the present application;

[0033] Figure 11 A structure schematic view of the top view of the rough surface of the present application.

[0034] In the figure: 1, frame; 11, bottom wall; 12, side wall; 13, support; 14, conveying and cleaning channel; 2, first conveying unit; 21, positioning frame; 22, driving assembly; 221, driving piece; 222, speed reducer; 223, driving shaft; 224, driving sprocket; 23, driven sprocket one; 24, tensioning sprocket; 25, chain one; 3, second conveying unit; 301, protective shell; 302, rotating shaft one; 303, driven sprocket two; 304, chain two; 305, clamping jaw; 3051, supporting part; 3052, clamping part; 3053, connecting part; 31, spraying unit; 311, water tank; 312, pressure booster; 313, connecting pipe; 314, spray head; 315, filter screen; 32, sweeping unit; 321, rotating shaft two; 322, driven sprocket three; 323, cleaning disc; 3231, connecting piece one; 324, rough surface; 3241, connecting piece two; 33, drying unit; 331, mounting port; 332, hot air device; 4, transmission mechanism; 41, connecting frame; 42, transmission sprocket one; 43, transmission shaft; 44, transmission gear one; 45, transmission gear two; 5, stacking unit; 51, bearing frame; 511, inclined surface; 52, side plate; 53, abutting plate; 6, top cover. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] The present application relates to a kind of printed circuit board substrate automation cleaning stacking device, as shown in Figure 1 It includes frame 1, and is set on the automation cleaning assembly of frame 1.

[0037] Wherein, as shown in Figures 2-5As shown, the rack 1 comprises a bottom wall 11, and oppositely arranged side walls 12 arranged on both sides of the bottom wall 11, and the bottom of the bottom wall 11 is further provided with a support 13 for supporting the same, and the oppositely arranged side walls 12 form a "U" shaped conveying and cleaning channel 14, and an automatic cleaning assembly is arranged in the conveying and cleaning channel 14, which comprises a first conveying unit 2 located at the beginning end of the conveying and cleaning channel 14, a second conveying unit 3 drivingly connected to the conveying end of the first conveying unit 2, a stacking unit 5 arranged at the conveying end of the second conveying unit 3, and a spraying unit 31, a brushing unit 32 and a drying unit 33 arranged in sequence along the conveying direction of the second conveying unit 3 below the same; the substrate is conveyed by the first conveying unit 2 and the second conveying unit 3, and then the substrate is sequentially washed, cleaned and dried on the bottom surface of the substrate by the spraying unit 31, the brushing unit 32 and the drying unit 33, and then the substrate is neatly stacked at the stacking unit 5, so that the substrate is effectively cleaned during conveying, thereby improving the quality of subsequent processing operations.

[0038] Specifically, as shown in Figure 5 The first conveying unit 2 comprises a common chain conveying device on the market, which comprises a positioning frame 21, a plurality of driven sprockets I 23 rotatably connected to the opposite inner side walls of the positioning frame 21 in an interval along the extension direction of the positioning frame 21, and a driving assembly 22 arranged at the outer side of the beginning end of the positioning frame 21 for driving the synchronous rotation of the driven sprockets I 23. As shown in Figure 6 The positioning frame 21 is in the shape of "U", and the top thereof is open for placing the substrate; the driving assembly 22 comprises a driving member 221, such as a motor; a speed reducer 222 having an input end connected to the rotating end of the driving member 221, and an output end of the speed reducer 222 fixedly connected with a driving shaft 223 transversely connected between the opposite inner side walls of the positioning frame 21, and the driving shaft 223 is axially connected with two groups of driving sprockets 224 respectively near the circumferential side of the opposite inner side walls of the positioning frame 21. In use, the two groups of driving sprockets 224 are respectively connected by chain transmission between the chain 25 and a plurality of driven sprockets I 23 on the adjacent side thereof, and then when the driving member 221 is started, the two groups of driving sprockets 224 are driven to rotate synchronously by the cooperation of the speed reducer 222, and the driven sprockets I 23 are also driven to rotate synchronously by the chain 25, so that the substrate can be conveyed when the substrate is arranged on the two groups of opposite chains 25 from the open top of the positioning frame 21.

[0039] The conveying end of the chain conveying device is provided with a transmission mechanism 4, and the chain conveying device is drivingly connected with the second conveying unit 3 through the transmission mechanism 4. Specifically, as shown in Figure 7As shown, the transmission mechanism 4 comprises a connecting frame 41 arranged opposite to the ends of the positioning frame 21, a transmission sprocket 42 rotatably connected to the connecting frame 41 through a transmission shaft 43 and in chain transmission connection with the driven sprocket 23 and the driving sprocket 224, a transmission gear 44 axially connected to the other end of the transmission shaft 43 and synchronously rotatable with the transmission sprocket 42, and a transmission gear 45 in meshing connection with the transmission gear 44, in the embodiment, the transmission gear 44 and the transmission gear 45 are preferably bevel gears. The second conveying unit 3 comprises oppositely arranged clamping conveying portions, each of which comprises a protective shell 301 fixedly connected to the side wall 12, a rotating shaft 302 rotatably connected to the bottom surface of each end of the protective shell 301 and extending in the direction perpendicular to the axis of the transmission shaft 43, a driven sprocket 303 axially connected to the rotating shaft 302 and in chain transmission connection with a chain 304, and clamping jaws 305 arranged at equal intervals on the outer surface of the chain 304, and the transmission gear 45 is axially connected to the extended end of the rotating shaft 302 close to the conveying end of the chain conveying device.

[0040] In use, due to the chain transmission connection between the transmission sprocket 42 and the driving sprocket 224, the driving sprocket 224 can drive the transmission sprocket 42 to rotate when the driving sprocket 224 rotates, at which time the transmission gear 44 synchronously rotates and drives the transmission gear 45 to rotate, under the rotation of the transmission gear 45, the rotating shaft 302 and the driven sprocket 303 connected to the rotating shaft 302 are also driven to rotate, further making the chain 304 move along the extension direction of the conveying and cleaning channel 14, thereby driving the clamping jaws 305 on the outer surface of the chain 304 to move; since the clamping conveying portions are oppositely arranged, when the clamping jaws 305 move, the two sides of the substrate conveyed out by the first conveying unit 2 can be clamped, as shown in Figure 10 The clamped substrate is conveyed along the conveying and cleaning channel 14 under the continuous movement of the clamping jaws 305 and finally sent out of the conveying and cleaning channel 14.

[0041] As shown in Figure 10As shown, the clamping jaw 305 comprises a supporting part 3051 for horizontally supporting the substrate, a clamping part 3052 connected at one end of the supporting part 3051 for limiting the substrate, and a connecting part 3053 connected at the top of the clamping part 3052 and fixedly connected with the outer vertical surface of the chain type conveying device chain two 304. In this embodiment, in order to ensure that the substrate can be well placed on the supporting part 3051, therefore, the top surface of the supporting part 3051 and the top surface of the chain type conveying device chain one 25 are located in the same plane or slightly lower than the top surface of the chain type conveying device chain one 25, so that the substrate placed on the top surface of the chain one 25 can be well conveyed to the supporting part 3051 of the clamping jaw 305; an included angle is formed between the clamping part 3052 and the supporting part 3051, and the included angle is an acute angle less than a right angle, so that the distance between the opposite clamping parts 3052 away from one end of the supporting part 3051 gradually decreases along the extension direction of the clamping part 3052 and is less than the width of the substrate, thereby limiting the movement of the substrate in the vertical direction, i.e. perpendicular to the conveying direction of the substrate, so that the substrate will not fall off when being washed by the subsequent spraying unit 31.

[0042] Further need to be explained is that, as Figure 5 shown, in order to ensure the tensioning of the chain one 25 connected between the driving sprocket 224, the driven sprocket one 23 and the transmission sprocket one 42, so that the chain one 25 is not easy to fall off and stably convey or meet the change of the position angle between the three, a tensioning sprocket 24 movably connected on the opposite inner side wall of the positioning frame 21 can be arranged between the three. Through the position adjustment of the tensioning sprocket 24, the tensioning of the chain one 25 can be ensured, and the arrangement of the tensioning sprocket 24 is the common sense known to those skilled in the art, which will not be described in detail here, and can be referred to as shown in the chain sprocket tensioning mechanism with the publication number: CN202560957U.

[0043] As Figures 4-5 shown, the spraying unit 31 comprises a water tank 311 connected to the bottom surface of the bottom wall 11 and communicated with the conveying and cleaning channel 14, a booster 312 arranged in the water tank 311, a connecting pipe 313 connected to the output end of the booster 312 and extending into the conveying and cleaning channel 14, and a high-pressure nozzle 314 connected between the extension end of the connecting pipe 313 and opposite the clamping conveying part. In this embodiment, the booster 312 is a submersible pump, and cleaning liquid is added in the water tank 311, when the booster 312 operates, the cleaning liquid in the water tank 311 can be extracted into the connecting pipe 313, and finally sprayed out through the high-pressure nozzle 314 of the connecting pipe 313, so as to wash the bottom surface of the substrate conveyed above the nozzle 314 to remove the contaminants on the bottom surface of the substrate.

[0044] Further, the top surface of the bottom wall 11 is gradually recessed from both ends thereof to the communication between the water tank 311 and the conveying cleaning channel 14, thereby forming a slope inwardly to the water tank 311, so that the sprayed cleaning liquid can be better collected into the water tank 311 through the slope for secondary use.

[0045] Further, since the collected cleaning liquid contains contaminants, a filter screen 315 is arranged at the communication between the water tank 311 and the conveying cleaning channel 14, so that the cleaning liquid containing contaminants can be filtered through the filter screen 315, and the contaminants can be collected on the top surface of the filter screen 315, while the filtered cleaning liquid can pass through the filter screen 315 into the water tank 311 for secondary use, thereby reducing the production cost. The filter screen 315 is arranged in the water tank 311 through a back-shaped step arranged on the inner wall of the water tank 311, and can be disassembled and replaced, and the collected contaminants can be conveniently treated.

[0046] Figure 8 The specific structure of the brush unit 32 is shown in Figures 1-5 The brush unit 32 includes a rotating shaft two 321 rotatably connected to the bottom surface of the protective shell 301, a driven sprocket three 322 axially connected to the rotating shaft two 321 and in chain transmission connection with the chain two 304, and a cleaning disc 323 axially connected to the end of the rotating shaft two 321. The top surface of the cleaning disc 323 is connected with a bristle surface 324 for brushing the bottom surface of the substrate. In use, under the driving of the chain two 304, the driven sprocket three 322 drives the rotating shaft two 321 and the cleaning disc 323 to rotate. When the bottom surface of the substrate is cleaned by the cleaning liquid sprayed by the spraying unit 31 and passes above the cleaning disc 323, the bristle surface 324 of the rotating cleaning disc 323 can brush the bottom surface of the substrate, which can further clean the bottom surface of the substrate, improve the cleaning effect, and also can absorb the cleaning liquid on the bottom surface of the substrate, thereby reducing the drying time of the subsequent drying unit 33 and improving the drying efficiency. The bristle surface 324 is closer to the drying unit 33, and the cleaning liquid absorbed thereon can be dried by the hot air generated by the drying unit 33.

[0047] Further, in order to facilitate cleaning and replacement of the bristle surface 324 and prevent the bristle surface 324 from scratching the bottom surface of the substrate due to accumulation of too much contaminants, the bristle surface 324 and the top surface of the cleaning disc 323 are detachably connected. Specifically, connecting member two 3241 and connecting member one 3231 are respectively arranged on the opposite surfaces between the bristle surface 324 and the top surface of the cleaning disc 323. In this embodiment, as a preferred example, the connecting member two 3241 and the connecting member one 3231 are respectively a magic son and a magic mother, which are connected by adhesion. The bristle surface 324 is made of an anti-static material, and is in the form of a ring strip, as shown in Figure 11 .

[0048] The drying unit 33 includes a mounting hole 331 formed through the bottom wall 11, and a hot air device 332 mounted in the mounting hole 331 and arranged relative to the second conveying unit 3. The hot air device 332 is a common hot air blower, which blows hot air to dry the bottom surface of the substrate conveyed thereabove.

[0049] As shown in Figure 9 The stacking unit 5 includes a carrier 51 communicated with the conveying end of the conveying and cleaning channel 14, and side plates 52 and abutting plates 53 connected to the adjacent edge surfaces of the carrier 51 to form an enclosure. When the substrate is conveyed by the second conveying unit 3 from the end of the conveying and cleaning channel 14, the substrate will first adhere to the abutting plate 53 under the restriction of the abutting plate 53, and then fall onto the carrier 51 in an orderly manner under the guidance and restriction of the side plates 52 and the abutting plates 53 and the action of its own gravity. Since the opposite surfaces of the side plates 52 are open, the stacked substrate can be conveniently taken.

[0050] Further, the top surface of the carrier 51 is covered with a flexible pad, such as a rubber pad, so as to protect the falling substrate and reduce damage to the substrate. Meanwhile, the top surface of the carrier 51 can be further provided as a slope 511 facing the abutting plate 53. After falling, the substrate can be further guided to adhere to the abutting plate 53 and be stacked in an orderly manner along the height direction of the abutting plate 53.

[0051] It should be noted that in the above scheme, the connection control between the units can be controlled by an industrial computer or a PLC controller.

[0052] In another embodiment, a top cover 6 capable of closing the top opening of the conveying and cleaning channel 14 is rotatably connected to one side wall 12 of the rack 1. When the top cover 6 closes the top opening of the conveying and cleaning channel 14, on the one hand, it can prevent the cleaning liquid sprayed by the spraying unit 31 from being sprayed out, and on the other hand, it can reduce the consumption of hot air generated by the drying unit 33, so that the temperature in the conveying and cleaning channel 14 can be effectively increased, which is beneficial to the efficient completion of the drying operation and further effectively protects the automatic cleaning assembly located in the conveying and cleaning channel 14. Figures 1-2 The top cover 6 is shown in the closed and open states, respectively.

[0053] The following is an example of a circuit board substrate after punching: when in use, the punched substrate is sequentially set up on the chain 25 for conveying, and when conveyed to the end, the substrate is clamped and conveyed by the clamping jaws 305 of the clamping conveying units located on both sides to enter the conveying and cleaning channel 14. In the conveying and cleaning channel 14, the substrate bottom is sequentially washed by the spraying unit 31, cleaned by the brushing unit 32, and dried and cleaned by the drying unit 33. After that, the substrate is neatly stacked at the stacking unit 5, so that the waste in the punched holes on the surface of the substrate can be effectively removed.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A printed wiring board substrate automatic cleaning and stacking apparatus characterized by comprising: The utility model relates to a kind of automatic cleaning system of substrate, including: Rack (1), and the automatic cleaning component of being arranged on the rack (1); The automatic cleaning component includes first conveying unit (2), the second conveying unit (3) of transmission connection in the conveying end of the first conveying unit (2), the package unit (5) of being arranged in the conveying end of the second conveying unit (3), and spray unit (31), brush unit (32) and drying unit (33) are sequentially arranged below the second conveying unit (3) and along its conveying direction;Substrate is conveyed by the first conveying unit (2) and the second conveying unit (3), to sequentially pass through spray unit (31) to substrate bottom surface flush, brush unit (32) to substrate bottom surface clean and drying unit (33) to substrate bottom surface dry cleaning after being cleaned, neatly stack at package unit (5).

2. The printed wiring board substrate automated cleaning and stacking apparatus according to claim 1, characterized by: The rack (1) includes bottom wall (11), and the sidewall (12) of being oppositely arranged in the both sides of the bottom wall (11), the sidewall (12) oppositely arranged forms the conveying cleaning channel (14) of substrate, and the automatic cleaning component is arranged in conveying cleaning channel (14).

3. The printed wiring board substrate automated cleaning and stacking apparatus of claim 2 wherein: The first conveying unit (2) includes chain conveying device arranged in the beginning end of the conveying cleaning channel (14); The conveying end of the chain conveying device is provided with transmission mechanism (4), and the chain conveying device is transmission connection with the second conveying unit (3) by transmission mechanism (4).

4. The printed wiring board substrate automated cleaning stacker apparatus of claim 3 wherein: The transmission mechanism (4) includes the connecting frame (41) of being oppositely arranged in the conveying end of the chain conveying device, the transmission sprocket one (42) of being rotationally connected on connecting frame (41) and being chain transmission connection with the chain conveying device, the transmission gear one (44) of being axially connected on the other end of transmission shaft (43) and being synchronous rotation with transmission sprocket one (42), and the transmission gear two (45) of being engaged with transmission gear one (44).

5. The printed wiring board substrate automated cleaning and stacking apparatus of claim 4 wherein: The second conveying unit (3) includes oppositely arranged clamping conveying part; Clamping conveying part includes fixedly connected with the sidewall (12) protective shell (301), rotationally connected on the bottom surface of the both ends of protective shell (301) and along the rotation shaft one (302) extending perpendicular to the axial direction of the transmission shaft (43), the driven sprocket two (303) of being chain transmission connection between being axially connected on the rotation shaft one (302) by chain two (304), and the clamping jaw (305) of being equidistantly arranged on the outer surface of chain two (304); The transmission gear two (45) is axially connected on the extension end of the rotation shaft one (302) close to the conveying end of the chain conveying device.

6. The printed wiring board substrate automated cleaning and stacking apparatus of claim 5 wherein: The clamping jaw (305) includes support part (3051) for horizontally supporting the substrate, clamping part (3052) connected on one end of support part (3051) to limit the substrate, and connecting part (3053) connected on the top of clamping part (3052) and fixedly connected with the outer surface of chain two (304).

7. The printed wiring board substrate automated cleaning stacker apparatus of any of claims 2-6, wherein: The spraying unit (31) comprises a water tank (311) connected to the bottom surface of the bottom wall (11) and communicated with the conveying and cleaning channel (14), a booster (312) arranged in the water tank (311), a connecting pipe (313) connected to the output end of the booster (312) and extended into the conveying and cleaning channel (14), and a spray head (314) connected between the extended end of the connecting pipe (313) and the clamping conveying part; The water tank (311) is provided with a filter screen (315) at the communicated position with the conveying and cleaning channel (14), and the top surface of the bottom wall (11) is gradually recessed towards the communicated position of the water tank (311) and the conveying and cleaning channel (14) from both ends.

8. The printed wiring board substrate automatic cleaning and stacking apparatus according to claim 5 or 6, characterized by: The brush unit (32) comprises a rotating shaft two (321) rotatably connected to the bottom surface of the protection shell (301), a driven sprocket three (322) axially connected to the rotating shaft two (321) and chain transmission connected with the chain two (304), and a cleaning disc (323) axially connected to the end of the rotating shaft two (321), and the top surface of the cleaning disc (323) is detachably connected with a wool surface (324) for brushing the bottom surface of the substrate.

9. The printed wiring board substrate automated cleaning and stacking apparatus according to any one of claims 2 to 6, characterized by: The drying unit (33) comprises a mounting hole (331) penetratingly arranged on the bottom wall (11), and a hot air device (332) arranged in the mounting hole (331) and relative to the second conveying unit (3).

10. The printed wiring board substrate automated cleaning and stacking apparatus according to any one of claims 2 to 6, characterized by: The stacking unit (5) comprises a bearing frame (51) communicated at the conveying end of the conveying and cleaning channel (14), and a side plate (52) and an abutting plate (53) connected to the adjacent edge surfaces of the bearing frame (51) to form a surrounding.

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