Spraying device for circuit board processing

Abstract

The utility model discloses a spraying device for circuit board processing, which comprises a spraying device and a swinging device, the spraying device comprises a plurality of upper spraying pipes, a plurality of lower spraying pipes, an upper connecting pipe and a lower connecting pipe; the upper spraying pipe and the lower spraying pipe are distributed in the conveying direction of the circuit board, the upper spraying pipe is located above the lower spraying pipe, and nozzles used for spraying liquid medicine to the circuit board are fixed to the upper spraying pipe and the lower spraying pipe; the upper connecting pipe and the lower connecting pipe extend in the conveying direction of the circuit board, the upper connecting pipe is connected with the upper spraying pipe and used for conveying liquid medicine to the upper spraying pipe, and the lower connecting pipe is connected with the lower spraying pipe and used for conveying liquid medicine to the lower spraying pipe; the upper connecting pipe and the lower connecting pipe are both connected with a swing device, and the swing device is used for driving the upper connecting pipe and the lower connecting pipe to reciprocate in the horizontal direction perpendicular to the conveying direction of the circuit board. The liquid medicine pipeline is convenient to arrange.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a spray device for circuit board processing. Background Art

[0002] Existing circuit board processing equipment such as circuit board developers, etching machines, demoulding machines and cleaning machines are equipped with spray devices, which spray chemicals on the circuit board to cause corresponding chemical reactions on the circuit board, thereby realizing the processing of the circuit board. For example, the Chinese utility model patent with publication number CN201821582U discloses a PCB board film stripping device.

[0003] For the existing spraying device, the liquid medicine is sprayed from the nozzle. Since there is a gap between adjacent nozzles, it is difficult for the liquid medicine to be sprayed evenly onto the circuit board, resulting in uneven chemical reaction on the circuit board. For this reason, the prior art also introduces a spraying device that allows the spray pipe to move. For this purpose, the connection mechanism needs to be connected to the corresponding driving mechanism. At the same time, the spray pipe also needs to maintain connection with the liquid medicine pipeline, which is not convenient for the layout of the liquid medicine pipeline. Utility Model Content

[0004] The utility model provides a spray device for processing a circuit board, which is convenient for arranging a medicine pipeline.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] An embodiment of the utility model provides a spray device for processing circuit boards, comprising a spray device and a swing device, wherein the spray device comprises a plurality of upper spray pipes, a plurality of lower spray pipes, an upper connecting pipe and a lower connecting pipe; the upper spray pipes and the lower spray pipes are both distributed along the conveying direction of the circuit boards, the upper spray pipes are located above the lower spray pipes, and nozzles for spraying medicine onto the circuit boards are fixed on the upper spray pipes and the lower spray pipes; the upper connecting pipes and the lower connecting pipes both extend along the conveying direction of the circuit boards, the upper connecting pipes are connected to the upper spray pipes and are used to convey medicine to the upper spray pipes, and the lower connecting pipes are connected to the lower spray pipes and are used to convey medicine to the lower spray pipes; the upper connecting pipes and the lower connecting pipes are both connected to the swing device, and the swing device is used to drive the upper connecting pipes and the lower connecting pipes to reciprocate along a horizontal direction perpendicular to the conveying direction of the circuit boards.

[0007] In some embodiments, the swing device includes a connecting seat and a swing drive assembly, the connecting seat is respectively connected to the upper connecting tube and the lower connecting tube, and the swing drive assembly is connected to the connecting seat and is used to drive the connecting seat to reciprocate in a horizontal direction perpendicular to the conveying direction of the circuit board.

[0008] In some embodiments, there are two connecting seats and two swing driving components. The two connecting seats are respectively connected to the two ends of the upper connecting pipe and the two ends of the lower connecting pipe, and the two swing driving components are respectively connected to the two connecting seats and are respectively used to drive the two connecting seats to reciprocate horizontally in a direction perpendicular to the conveying direction of the circuit board.

[0009] In some embodiments, the connecting seat is provided with a liquid inlet channel. One end of the liquid inlet channel is communicated with the upper connecting pipe and / or the lower connecting pipe, and the other end is used to connect an external liquid inlet pipe.

[0010] In some embodiments, the swing device further includes a guide rail extending in a horizontal direction perpendicular to the conveying direction of the circuit board, and the connecting seat is slidably matched with the guide rail.

[0011] In some embodiments, the swing driving component includes a driving mechanism, a rotating rod, an eccentric wheel and a swing shaft. The driving mechanism is connected to the rotating rod and is used to drive the rotating rod to rotate. The eccentric wheel is fixed at the end of the rotating rod and can eccentrically rotate relative to the rotating rod. The swing shaft extends in a horizontal direction perpendicular to the conveying direction of the circuit board, and both ends of the swing shaft are respectively rotationally connected to the eccentric wheel and the connecting seat. The rotation axis of the eccentric wheel, the rotation axis of the swing shaft relative to the eccentric wheel, and the rotation axis of the swing shaft relative to the connecting seat are parallel to each other, and the rotation axis of the eccentric wheel is parallel to the conveying direction of the circuit board.

[0012] In some embodiments, the swing device is located at one end of the upper spray pipe and the lower spray pipe. Supports are provided at the other ends of the upper spray pipe and the lower spray pipe. The upper spray pipe and the lower spray pipe are both placed on the supports or are both slidably connected to the supports in a horizontal direction perpendicular to the conveying direction of the circuit board.

[0013] In some embodiments, a limiting mechanism for restricting the movement of the upper spray pipe and the lower spray pipe in the conveying direction is further provided on the support.

[0014] In some embodiments, the support includes a support rod and a limiting wheel sleeved on the support rod. The support rod extends in the conveying direction of the circuit board. The limiting mechanism is a limiting groove provided on the circumferential surface of the limiting wheel. The ends of the upper spray pipe and the lower spray pipe close to the support are placed on the limiting wheel, and a part of the upper spray pipe and the lower spray pipe is embedded in the limiting groove.

[0015] The utility model has at least the following beneficial effects: The upper connecting pipe of the utility model is connected to the upper spray pipe, and the lower connecting pipe is connected to the lower spray pipe. When the swinging device drives both the upper connecting pipe and the lower connecting pipe to reciprocate horizontally in a direction perpendicular to the conveying direction of the circuit board, the nozzles on the upper connecting pipe and the lower connecting pipe also reciprocate accordingly, so that the circuit board can be sprayed with the chemical solution more evenly; The upper connecting pipe and the lower connecting pipe are respectively connected to the swinging device and the corresponding spray pipe to conduct the driving force of the swinging device. At the same time, the upper connecting pipe is used to convey the chemical solution to the upper spray pipe, and the lower connecting pipe is used to convey the chemical solution to the lower spray pipe. The external liquid inlet pipe only needs to be connected to the upper connecting pipe and the lower connecting pipe to supply the chemical solution, which simplifies the overall structure and facilitates the layout of the chemical solution pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of a spray device and a conveying roller for circuit board processing according to an embodiment of the present invention;

[0017] Figure 2 FIG. is a schematic structural diagram of a spray device for circuit board processing according to an embodiment of the present invention;

[0018] Figure 3 is Figure 1 an enlarged schematic view of part A in

[0019] Figure 4 is Figure 2 an enlarged schematic view of part B in

[0020] Figure 5 FIG. is a schematic structural diagram of a connecting seat according to an embodiment of the present invention;

[0021] Figure 6 FIG. is an exploded schematic view of a connecting seat according to an embodiment of the present invention;

[0022] Figure 7 is Figure 1 an enlarged schematic view of part C in

[0023] Among them, the reference numerals are:

[0024] Conveying roller 110;

[0025] Upper spray pipe 210, lower spray pipe 220, nozzle 230, chemical solution 231, upper connecting pipe 240, lower connecting pipe 250, bracket 260, support rod 261, limiting wheel 262, limiting groove 263, liquid inlet pipe 270;

[0026] Connecting seat 310, liquid inlet channel 311, slider 312, through groove 313, rotating hole 314, accommodating cavity 315, drainage hole 316, base 3111, side plate 3112;

[0027] Swing drive assembly 320, drive mechanism 321, rotating rod 322, eccentric wheel 323, swing shaft 324, guide rail 330, water blocking mechanism 340, water blocking plate 341, telescopic sleeve 342. Detailed implementation manners

[0028] The present utility model provides the following description with reference to the drawings to help a comprehensive understanding of various embodiments of the present utility model as defined by the claims and their equivalents. The description includes various specific details to help understanding, but these details should be regarded as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present utility model.

[0029] In the description of the present utility model, orientation descriptions are involved, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for facilitating the description of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0030] It should be understood that when an element (for example, the first element) is "connected" to another element (for example, the second element), the element can be directly connected to the other element, or there can be an intermediate element (for example, the third element) between the element and the other element.

[0031] An embodiment of the present utility model provides a spraying device for circuit board processing, as Figure 1-7As shown in the figure, it includes a spraying device and a swinging device. The spraying device includes a plurality of upper spraying pipes 210 and a plurality of lower spraying pipes 220. Between the upper spraying pipes 210 and the lower spraying pipes 220, there are a plurality of conveying rollers 110 distributed along the conveying direction, and the conveying rollers 110 are used to convey the circuit board. When performing the spraying operation, the upper spraying pipes 210 are located above the circuit board, and the lower spraying pipes 220 are located below the circuit board. Nozzles 230 for spraying the chemical solution onto the circuit board are fixed on both the upper spraying pipes 210 and the lower spraying pipes 220. Among them, the nozzles 230 on the upper spraying pipes 210 are used to spray the chemical solution downward, and the nozzles 230 on the lower spraying pipes 220 are used to spray the chemical solution upward. The spraying device further includes an upper connecting pipe 240 and a lower connecting pipe 250 extending along the horizontal direction perpendicular to the conveying direction of the circuit board. The upper connecting pipe 240 is connected to the upper spraying pipes 210 and is used to convey the chemical solution to the upper spraying pipes 210, and the lower connecting pipe 250 is connected to the lower spraying pipes 220 and is used to convey the chemical solution to the lower spraying pipes 220. Both the upper connecting pipe 240 and the lower connecting pipe 250 are connected to the swinging device, and the swinging device is used to drive the upper connecting pipe 240 and the lower connecting pipe 250 to reciprocate along the horizontal direction perpendicular to the conveying direction of the circuit board, thereby driving both the upper spraying pipes 210 and the lower spraying pipes 220 to reciprocate along the horizontal direction perpendicular to the conveying direction of the circuit board. As the upper spraying pipes 210 and the lower spraying pipes 220 reciprocate, the nozzles 230 on the upper spraying pipes 210 and the lower spraying pipes 220 will correspondingly change the positions of spraying the chemical solution onto the circuit board, thereby enabling more uniform spraying of the chemical solution, making the chemical reaction on the circuit board relatively uniform, and improving the quality of the circuit board.

[0032] At the same time, the upper connecting pipe 240 and the lower connecting pipe 250 are respectively connected to the swinging device and the corresponding spraying pipes to conduct the driving force of the swinging device. The upper connecting pipe 240 is used to convey the chemical solution to the upper spraying pipes 210, and the lower connecting pipe 250 is used to convey the chemical solution to the lower spraying pipes 220. The external liquid inlet pipe only needs to be connected to the upper connecting pipe 240 and the lower connecting pipe 250 to supply the chemical solution, which simplifies the overall structure and facilitates the layout of the chemical solution pipelines.

[0033] In this embodiment, two sets of swinging devices can be provided to respectively drive the upper connecting pipe 240 and the lower connecting pipe 250 to reciprocate, so that the upper spraying pipes 210 and the lower spraying pipes 220 can act out of sync. Of course, one set of swinging devices can also be provided to drive the upper spraying pipes 210 and the lower spraying pipes 220 to act synchronously.

[0034] In this embodiment, the axial direction of the upper spray pipe 210 and the axial direction of the lower spray pipe 220 can both form an acute angle or be perpendicular to the conveying direction of the circuit board. Considering the convenience of the overall structural arrangement, the axial directions of the upper spray pipe 210 and the lower spray pipe 220 are preferably set to be perpendicular to the conveying direction of the circuit board. Correspondingly, the nozzles 230 on the upper spray pipe 210 are distributed along its axial direction, and the nozzles 230 on the lower spray pipe 220 are also distributed along its axial direction. The distance between two adjacent nozzles 230 can be equal to the distance that the swinging device drives the upper spray pipe 210 and the lower spray pipe 220 to reciprocate, so as to overcome the problem of uneven spraying of the liquid medicine caused by the distance between two adjacent nozzles 230, thereby further improving the uniformity of the liquid medicine spraying.

[0035] In some embodiments, the swinging device includes a connecting seat 310 and a swinging driving assembly 320. The connecting seat 310 is respectively connected to the upper connecting pipe 240 and the lower connecting pipe 250, and the swinging driving assembly 320 is connected to the connecting seat 310 and is used to drive the connecting seat 310 to reciprocate in the horizontal direction perpendicular to the conveying direction of the circuit board. The connecting seat 310 of this embodiment connects the upper connecting pipe 240 and the lower connecting pipe 250 into a whole, so that the upper connecting pipe 240 and the lower connecting pipe 250 are linked. Correspondingly, the upper spray pipe 210 and the lower spray pipe 220 can move synchronously in the horizontal direction perpendicular to the conveying direction of the circuit board, which is convenient for better controlling the spraying position of the liquid medicine. Moreover, by providing the driving force through the same swinging driving assembly 320, the structural configuration can be simplified.

[0036] Furthermore, the connecting seat 310 can be located at the middle position of the upper connecting pipe 240 and the lower connecting pipe 250. Considering that both the upper connecting pipe 240 and the lower connecting pipe 250 are relatively long, two sets of connecting seats 310 and swinging driving assemblies 320 can be provided. The two connecting seats 310 are respectively located at both ends of the upper connecting pipe 240 and the lower connecting pipe 250 to respectively connect both ends of the upper connecting pipe 240 and the lower connecting pipe 250. The two swinging driving assemblies 320 will respectively drive the two connecting seats 310 to reciprocate synchronously in the horizontal direction perpendicular to the conveying direction of the circuit board. On the one hand, this can provide a greater driving force to sufficiently drive the entire mechanism to move. On the other hand, this ensures that the upper connecting pipe 240 and the lower connecting pipe 250 will not be skewed during the movement, guaranteeing the stable reciprocating movement of the upper connecting pipe 240 and the lower connecting pipe 250.

[0037] Further, the connecting seat 310 is provided with a liquid inlet channel 311. One end of the liquid inlet channel 311 is used to connect to an external liquid inlet pipe 270, and the other end can communicate with the upper connecting pipe 240, or communicate with the lower connecting pipe 250, or communicate with both the upper connecting pipe 240 and the lower connecting pipe 250. The liquid inlet pipe 270 is used to convey the liquid medicine to the connecting seat 310, and the liquid medicine enters the corresponding upper connecting pipe 240 and / or lower connecting pipe 250 through the liquid inlet channel 311 to realize the conveyance of the liquid medicine.

[0038] In this embodiment, both ends of the liquid inlet channel 311 form openings on the connecting seat 310. The liquid inlet pipe 270, the upper connecting pipe 240, and the lower connecting pipe 250 can be inserted into the openings, which not only realizes the fixed connection between them but also realizes the connection of the liquid medicine conveyance pipeline.

[0039] In some embodiments, the swinging device further includes a guide rail 330 extending in a horizontal direction perpendicular to the conveying direction of the circuit board. The connecting seat 310 is slidably engaged with the guide rail 330, which can guide the connecting seat 310 to move stably in the horizontal direction perpendicular to the conveying direction of the circuit board. At the same time, it provides more choices for the specific structure of the swinging drive assembly 320, and the driving force of the swinging drive assembly 320 in other directions will not cause the connecting seat 310 to move out of position.

[0040] In this embodiment, a slider 312 extending in a horizontal direction perpendicular to the conveying direction of the circuit board can be provided on the connecting seat 310, and a guide rail groove adapted to the slider 312 can be provided on the guide rail 330. The slider 312 is disposed in the guide rail groove and slides along the guide rail groove.

[0041] In some embodiments, the swinging drive assembly 320 includes a driving mechanism 321, a rotating rod 322, an eccentric wheel 323, and a swinging shaft 324. The driving mechanism 321 is connected to the rotating rod 322 and is used to drive the rotating rod 322 to rotate. The eccentric wheel 323 is fixed to the end of the rotating rod 322. When the rotating rod 322 rotates, the eccentric wheel 323 rotates eccentrically relative to the rotating rod 322. In the default state, the swinging shaft 324 extends in a horizontal direction perpendicular to the conveying direction of the circuit board, and both ends of the swinging shaft 324 are respectively rotatably connected to the eccentric wheel 323 and the connecting seat 310. The rotation axis of the eccentric wheel 323, the rotation axis of the swinging shaft 324 relative to the eccentric wheel 323, and the rotation axis of the swinging shaft 324 relative to the connecting seat 310 are parallel to each other, and the rotation axis of the eccentric wheel 323 is parallel to the conveying direction of the circuit board. Thus, the eccentric wheel 323 and the swinging shaft 324 rotate in the same or parallel planes. The rotation of the eccentric wheel 323 exerts a force on the swinging shaft 324. Since the connecting seat 310 is slidably engaged with the guide rail 330, the swinging shaft 324 can push or pull the connecting seat 310 to reciprocate, forming an effect similar to that of an engine piston rod.

[0042] Compared with directly driving the connecting seat 310 to reciprocate through a driving mechanism, the width of this driving structure in the horizontal direction perpendicular to the conveying direction of the circuit board in this embodiment is shorter, thereby reducing the space occupation and enabling more space to be used for configuring the spraying device.

[0043] In this embodiment, the driving mechanism 321 may include a motor, which drives the rotating rod 322 to rotate. The rotating rod 322 may extend along the conveying direction of the circuit board. A collar may be provided at the end of the swing shaft 324, and the collar is sleeved on the eccentric wheel 323 and can rotate relative to the eccentric wheel 323 to achieve the rotational connection between the swing shaft 324 and the eccentric wheel 323.

[0044] Furthermore, the spraying device for circuit board processing further includes a housing. Both the spraying device and the connecting seat 310 are arranged inside the housing, which plays a role in dust protection for the spraying device and the connecting seat 310 and can also reduce the splashing of the liquid medicine.

[0045] The driving mechanism 321, the rotating rod 322, and the eccentric wheel 323 are all arranged outside the housing. On the one hand, this can reduce the occupation of the internal space of the housing, enabling the internal space of the housing to accommodate larger-sized circuit boards. On the other hand, it can prevent the liquid medicine from splashing onto the driving mechanism 321 and ensure the stable operation of the driving mechanism 321.

[0046] Correspondingly, the housing is provided with a perforation, and the swing shaft 324 is passed through the perforation so that both ends of the swing shaft 324 can be rotatably connected to the eccentric wheel 323 and the connecting seat 310 respectively. At the same time, a water blocking mechanism 340 for restricting the outflow of the liquid medicine from the perforation is also arranged on the swing shaft 324, and the liquid medicine will not flow out of the perforation to the outside of the housing, reducing the loss of the liquid medicine.

[0047] Furthermore, the water blocking mechanism 340 includes a water blocking plate 341 and a telescopic sleeve 342. The swing shaft 324 passes through the water blocking plate 341 and is connected to the water blocking plate 341. The telescopic sleeve 342 is sleeved outside the swing shaft 324. One end of the telescopic sleeve 342 is connected to the water blocking plate 341, and the other end is connected to the inner wall of the housing and covers the perforation. The water blocking plate 341 and the telescopic sleeve 342 block the perforation, and the liquid medicine cannot flow out of the perforation to the outside of the housing. At the same time, since the telescopic sleeve 342 can elastically expand and contract, it does not affect the movement of the swing shaft 324, and the swing shaft 324 can still drive the connecting seat 310 to reciprocate.

[0048] In this embodiment, the swing shaft 324 and the water blocking plate 341 may be integrally connected, which is convenient for integral manufacturing and forming, strengthens the connection strength between the swing shaft 324 and the water blocking plate 341, and at the same time, there may be no gap between the swing shaft 324 and the water blocking plate 341 to prevent the liquid medicine from entering the telescopic sleeve 342.

[0049] In some embodiments, the connecting seat 310 may include a base 3111 and a side plate 3112. The base 3111 and the side plate 3112 may enclose to form a receiving cavity 315, and a part of the receiving cavity 315 forms a liquid inlet channel 311. The connecting seat 310 of this embodiment adopts a split structure, which is convenient for arranging the liquid inlet channel 311, and can reduce the material used for the connecting seat 310 and lower the manufacturing cost.

[0050] The connecting seat 310 may be provided with a through slot 313 penetrating the connecting seat 310 in a horizontal direction perpendicular to the conveying direction of the circuit board. A rotating hole 314 may be provided on the inner wall of the through slot 313. A support rod is inserted through the rotating hole 314. An opening may be provided at the end of the swing shaft 324, and the support rod is inserted through the opening and can rotate in the opening to realize the rotational connection between the connecting seat 310 and the swing shaft 324.

[0051] The rotating hole 314 may communicate with the receiving cavity 315. A drain hole 316 communicating with the receiving cavity 315 may be provided at the bottom of the connecting seat 310. When the liquid medicine enters the receiving cavity 315 along the support rod, the liquid medicine can be discharged through the drain hole 316 to prevent the liquid medicine from accumulating in the receiving cavity 315.

[0052] In some embodiments, the swing device is located at one end of the upper spray pipe 210 and the lower spray pipe 220, which can prevent the swing device from interfering with the circuit board conveyed by the conveying roller 110. Brackets 260 are provided at the other ends of the upper spray pipe 210 and the lower spray pipe 220. The upper spray pipe 210 and the lower spray pipe 220 are both placed on the brackets 260. When the swing device drives the upper spray pipe 210 and the lower spray pipe 220 to reciprocate, this end of the upper spray pipe 210 and the lower spray pipe 220 close to the brackets 260 will move correspondingly on the brackets 260. The brackets 260 support the upper spray pipe 210 and the lower spray pipe 220 to keep the upper spray pipe 210 and the lower spray pipe 220 stable. At the same time, the reciprocating movement of the upper spray pipe 210 and the lower spray pipe 220 is not restricted.

[0053] Furthermore, a limiting mechanism for restricting the movement of the upper spray pipe 210 and the lower spray pipe 220 along the conveying direction of the circuit board is also provided on the brackets 260, so that the upper spray pipe 210 and the lower spray pipe 220 can move in a horizontal direction perpendicular to the conveying direction of the circuit board.

[0054] Further, the support 260 may include a support rod 261 and a limiting wheel 262 sleeved on the support rod 261. One end of the upper spray pipe 210 and the lower spray pipe 220 close to the support 260 is placed on the limiting wheel 262. The support rod 261 extends along the conveying direction of the circuit board. The limiting mechanism is a limiting groove 263 provided on the circumferential surface of the limiting wheel 262. A part of the upper spray pipe 210 and the lower spray pipe 220 is embedded in the limiting groove 263 to limit the movement of the upper spray pipe 210 and the lower spray pipe 220 along the conveying direction of the circuit board.

[0055] In some other embodiments, one end of the upper spray pipe 210 and the lower spray pipe 220 close to the support 260 may be slidably connected to the support 260 in a horizontal direction perpendicular to the conveying direction of the circuit board, which has a better guiding and limiting effect on the upper spray pipe 210 and the lower spray pipe 220. Further, a limiting mechanism for restricting the movement of the upper spray pipe 210 and the lower spray pipe 220 along the conveying direction of the circuit board may also be provided on the support 260, so that the upper spray pipe 210 and the lower spray pipe 220 move in a horizontal direction perpendicular to the conveying direction of the circuit board.

[0056] It should be noted that Figure 1 and Figure 2 the triangular structure connected to the nozzle 230 in

[0057] is a schematic diagram formed by the liquid medicine 231 sprayed out of the nozzle 230. In the above description and claims, the terms and words used are not limited to the literal meanings, but are used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should clearly understand that the above description of various embodiments of the present invention is only for illustration, rather than for limiting the present invention as defined by the appended claims and their equivalents.

Claims

1. A spraying device for circuit board processing, characterized in that: It includes a spraying device and a swinging device. The spraying device includes a plurality of upper spraying pipes, a plurality of lower spraying pipes, an upper connecting pipe and a lower connecting pipe. The upper spraying pipes and the lower spraying pipes are both distributed along the conveying direction of the circuit board. The upper spraying pipes are located above the lower spraying pipes. Nozzles for spraying liquid medicine onto the circuit board are fixed on both the upper spraying pipes and the lower spraying pipes. The upper connecting pipe and the lower connecting pipe both extend along the conveying direction of the circuit board. The upper connecting pipe is connected to the upper spraying pipes and is used to convey liquid medicine to the upper spraying pipes. The lower connecting pipe is connected to the lower spraying pipes and is used to convey liquid medicine to the lower spraying pipes. Both the upper connecting pipe and the lower connecting pipe are connected to the swinging device. The swinging device is used to drive both the upper connecting pipe and the lower connecting pipe to reciprocate horizontally in a direction perpendicular to the conveying direction of the circuit board.

2. The spray device for circuit board processing according to claim 1, characterized in that: The swinging device includes a connecting seat and a swinging driving assembly. The connecting seat is respectively connected to the upper connecting pipe and the lower connecting pipe. The swinging driving assembly is connected to the connecting seat and is used to drive the connecting seat to reciprocate horizontally in a direction perpendicular to the conveying direction of the circuit board.

3. The spray device for circuit board processing according to claim 2, wherein: There are two connecting seats and two swinging driving assemblies. The two connecting seats are respectively connected to the two ends of the upper connecting pipe and the two ends of the lower connecting pipe. The two swinging driving assemblies are respectively connected to the two connecting seats and are respectively used to drive the two connecting seats to reciprocate horizontally in a direction perpendicular to the conveying direction of the circuit board.

4. The spray device for circuit board processing according to claim 2, wherein: The connecting seat is provided with a liquid inlet channel. One end of the liquid inlet channel is communicated with the upper connecting pipe and / or the lower connecting pipe, and the other end is used to connect an external liquid inlet pipe.

5. The spray device for circuit board processing according to claim 2, wherein: The swinging device further includes a guide rail extending horizontally in a direction perpendicular to the conveying direction of the circuit board. The connecting seat is slidably matched with the guide rail.

6. The spray device for circuit board processing according to claim 5, wherein: The swinging driving assembly includes a driving mechanism, a rotating rod, an eccentric wheel and a swinging shaft. The driving mechanism is connected to the rotating rod and is used to drive the rotating rod to rotate. The eccentric wheel is fixed at the end of the rotating rod and can eccentrically rotate relative to the rotating rod. The swinging shaft extends horizontally in a direction perpendicular to the conveying direction of the circuit board, and the two ends of the swinging shaft are respectively rotationally connected to the eccentric wheel and the connecting seat. The rotation axis of the eccentric wheel, the rotation axis of the swinging shaft relative to the eccentric wheel, and the rotation axis of the swinging shaft relative to the connecting seat are parallel to each other, and the rotation axis of the eccentric wheel is parallel to the conveying direction of the circuit board.

7. The spray device for circuit board processing according to any one of claims 1-6, characterized in that: The swinging device is located at one end of the upper spraying pipes and the lower spraying pipes. Brackets are provided at the other ends of the upper spraying pipes and the lower spraying pipes. The upper spraying pipes and the lower spraying pipes are both placed on the brackets or are both slidably connected to the brackets horizontally in a direction perpendicular to the conveying direction of the circuit board.

8. The spray device for circuit board processing according to claim 7, characterized in that: A limiting mechanism for restricting the movement of the upper spraying pipes and the lower spraying pipes along the conveying direction is further provided on the brackets.

9. The spraying device for circuit board processing according to claim 8, wherein: The bracket includes a support rod and a limiting wheel sleeved on the support rod. The support rod extends along the conveying direction of the circuit board. The limiting mechanism is a limiting groove provided on the circumferential surface of the limiting wheel. The ends of the upper spraying pipes and the lower spraying pipes close to the brackets are placed on the limiting wheels, and a part of the upper spraying pipes and the lower spraying pipes is embedded in the limiting groove.

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