A spraying device for a ceramic sandblasting machine used for PCB boards.

Abstract

This utility model discloses a spraying device for a ceramic sandblasting machine used on PCB boards, including a spray pipe. A first spray pipe is fixedly connected to the outer contour of the spray pipe. A filter box is detachably connected to the bottom of the first spray pipe, and a second spray pipe is detachably connected to the bottom of the filter box. A nozzle is provided at the bottom of the second spray pipe. This utility model, through the coordinated use of the first spray pipe, filter box, second spray pipe, annular connecting plate, annular fixing plate, groove, multi-stage filter screens disposed within the filter box, and a locking mechanism disposed within the groove, can filter the liquid entering the first spray pipe, effectively filtering out smaller particulate impurities in the liquid, increasing the filtration effect. Furthermore, the locking mechanism facilitates the disassembly of the filter box by operators, allowing for the replacement of the multi-stage filter screens, further increasing the practicality of the equipment and improving its filtration effect on impurities in the liquid.

Description

Technical Field

[0001] This utility model relates to the field of PCB board technology, and in particular to a spraying device for a ceramic sandblasting machine for PCB boards. Background Technology

[0002] PCB, or Printed Circuit Board, is an important electronic component. It serves as the support for electronic components and the carrier for their electrical interconnection. Because it is manufactured using electronic printing techniques, it is called a "printed" circuit board. PCBs have evolved from single-sided boards to high-density interconnect boards and flexible boards to meet the demands for miniaturization and high performance.

[0003] For example, patent publication number CN217595291U describes a spraying device for a ceramic sandblasting machine used on PCB boards. The key technical points are: it includes a stainless steel pipe, with a spraying device body connected to the inner surface of the stainless steel pipe; the spraying device body includes a spray pipe connected to the stainless steel pipe; a spray frame is provided on the outer surface of the spray pipe; and nozzles are connected to the outer surface of the spray frame. The beneficial effect of this invention is that existing technologies lack filter elements, often resulting in nozzle blockage due to large particles of impurities, which can severely affect the overall quality of the sandblasting machine. This invention uses a pendant-type spray head. The splash plate of the pendant-type spray head resembles flower petals, evenly dispersing the water flow during spraying. This allows the chemical solution to be evenly sprayed onto the PCB board. This invention overcomes the shortcomings of existing technologies, providing a new type of spraying device for ceramic sandblasting machines that is easy to install and maintain, and has strong practical performance.

[0004] In the aforementioned prior art, a nozzle connector is installed at the connection between the nozzle and the nozzle connector, and a filter element is installed inside the nozzle connector to filter large particles of impurities. However, after prolonged use, the filter element easily absorbs a lot of impurities, causing blockage of the nozzle and thus affecting the water output of the equipment, resulting in a decrease in the equipment's practicality. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a spraying device for a ceramic sandblasting machine used on PCB boards.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a spraying device for a ceramic sandblasting machine for PCB boards, comprising a spray pipe, a first spray pipe fixedly connected to the outer contour of the spray pipe, a filter box detachably connected to the bottom of the first spray pipe, a second spray pipe detachably connected to the bottom of the filter box, a nozzle provided at the bottom of the second spray pipe, annular connecting plates fixedly connected to both ends of the filter box, annular fixing plates that engage with the annular connecting plates provided at the bottom of the first spray pipe and the top of the second spray pipe, and grooves arranged in a circular array on the outer contour of the annular connecting plates and the annular fixing plates, wherein a locking mechanism is provided in the grooves.

[0007] As a further description of the above technical solution: The locking mechanism includes a locking rod that is slidably connected in the groove, and a locking block is fixedly connected to the outer contour of the locking rod near the annular fixing plate. An elastic element is provided on the locking rod.

[0008] As a further description of the above technical solution: The inner wall of the groove near the annular connecting plate and the inner wall of the groove near the annular fixing plate are respectively provided with a placement groove 1 and a placement groove 2 for the snap-fit ​​block to snap into place. The inner walls of the placement groove 1 and the placement groove 2 are provided with movable holes for the snap-fit ​​block to slide and connect.

[0009] As a further description of the above technical solution: The elastic element includes a fixing rod fixedly connected to the inner wall of the groove near the other side of the annular connecting plate. The end of the fixing rod is disposed on the inner wall of the snap-fit ​​rod. The end of the fixing rod is fixedly connected to a fixing connecting plate that is rotatably connected to the inner wall of the snap-fit ​​rod. A return spring is disposed on the fixing connecting plate that contacts the inner wall of the snap-fit ​​rod.

[0010] As a further description of the above technical solution: The surface of the snap-fit ​​rod has a through groove that extends to the fixed connecting plate.

[0011] As a further description of the above technical solution: A threaded hole is fixedly connected to the side of the fixed connecting plate near the fixed rod, and a threaded block adapted to the threaded hole is provided on the fixed rod.

[0012] As a further description of the above technical solution: The main view shape of the snap-fit ​​block is rectangular, and the main view shape of the movable hole is the same as that of the snap-fit ​​block.

[0013] As a further description of the above technical solution: An annular plug plate is fixedly connected to the side of the annular connecting plate away from the spray pipe, and a sealing ring is installed in a linear array on the outer contour of the annular plug plate.

[0014] This utility model has the following beneficial effects: Compared with existing technologies, this spraying device for a ceramic sandblasting machine for PCB boards, through the coordinated use of a spray pipe, a filter box, a spray pipe, an annular connecting plate, an annular fixing plate, a groove, a multi-stage filter screen installed in the filter box, and a locking mechanism installed in the groove, can filter the liquid entering the spray pipe and effectively filter out smaller particulate impurities in the liquid, thereby increasing the filtration effect. Furthermore, the locking mechanism facilitates the disassembly of the filter box by operators, who can then disassemble and replace the multi-stage filter screens within the filter box, further increasing the practicality of the equipment and improving its filtration effect on impurities in the liquid. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall main structure of the spraying device for a ceramic sandblasting machine for PCB boards proposed in this utility model. Figure 2 This utility model proposes a spraying device for a ceramic sandblasting machine used on PCB boards. Figure 1 A magnified structural diagram at point A; Figure 3 This utility model provides a cross-sectional view of the locking mechanism of a spraying device for a ceramic sandblasting machine used on a PCB board. Figure 4 This is a schematic diagram of the main structure of the clamping rod and clamping block of the spraying device for a ceramic sandblasting machine for PCB boards proposed in this utility model.

[0016] Legend: 1. Spray pipe; 2. Spray pipe one; 3. Filter box; 4. Spray pipe two; 5. Nozzle; 6. Annular connecting plate; 61. Annular plug plate; 62. Sealing ring; 7. Annular fixing plate; 8. Groove; 9. Snap-fit ​​rod; 10. Snap-fit ​​block; 11. Placement slot one; 12. Placement slot two; 13. Movable hole; 14. Fixing rod; 15. Fixing connecting plate; 16. Return spring; 17. Slotted groove; 18. Threaded hole; 19. Threaded block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1-4This utility model provides a spraying device for a ceramic sandblasting machine for PCB boards, including a spray pipe 1, a spray pipe 2 fixedly connected to the outer contour of the spray pipe 1, a filter box 3 detachably connected to the bottom of the spray pipe 2, a spray pipe 4 detachably connected to the bottom of the filter box 3, a nozzle 5 provided at the bottom of the spray pipe 4, annular connecting plates 6 fixedly connected to both ends of the filter box 3, annular fixing plates 7 provided at the bottom of the spray pipe 2 and the top of the spray pipe 4, which are engaged with the annular connecting plates 6, and grooves 8 are circumferentially arrayed on the outer contour of the annular connecting plates 6 and the annular fixing plates 7, with locking mechanisms provided in the grooves 8.

[0019] First, the annular fixing plate 7 on spray pipe 1 2 and the annular connecting plate 6 on filter box 3 are locked together by a locking mechanism. Then, the annular fixing plate 7 on spray pipe 2 4 and the annular connecting plate 6 on spray pipe 2 4 are locked together by a locking mechanism. When the liquid enters spray pipe 1 and is sent to spray pipe 1 2, it enters filter box 3. The multi-stage filter screen in filter box 3 filters out smaller particles in the liquid, increasing its filtration effect. Since the multi-stage filter screen in filter box 3 has been used for a long time and needs to be cleaned regularly, the staff can disassemble filter box 3 through the locking mechanism. Then, the staff can disassemble and replace the multi-stage filter screen in filter box 3, further increasing the practicality of the equipment and improving the filtration effect of the equipment on impurities in the liquid.

[0020] The locking mechanism includes a locking rod 9 that is slidably connected within the groove 8. A locking block 10 is fixedly connected to the outer contour of the locking rod 9 near the annular fixing plate 7. An elastic element is provided on the locking rod 9. The inner wall of the groove 8 near the annular connecting plate 6 and the inner wall of the groove 8 near the annular fixing plate 7 are respectively provided with a placement groove 11 for locking the locking block 10. The inner walls of the placement groove 11 and the placement groove 12 are provided with movable holes 13 for sliding connection of the locking block 10. The elastic element includes a fixing rod 14 fixedly connected to the inner wall of the groove 8 near the annular connecting plate 6 on the other side. The end of the fixed rod 14 is located on the inner wall of the snap-fit ​​rod 9. The end of the fixed rod 14 is fixedly connected to a fixed connecting plate 15 that is rotatably connected to the inner wall of the snap-fit ​​rod 9. A return spring 16 that contacts the inner wall of the snap-fit ​​rod 9 is provided on the fixed connecting plate 15. A slot 17 extending to the fixed connecting plate 15 is opened through the surface of the snap-fit ​​rod 9. A threaded hole 18 is fixedly connected to the side of the fixed connecting plate 15 near the fixed rod 14. A threaded block 19 that matches the threaded hole 18 is opened on the fixed rod 14. The main view shape of the snap-fit ​​block 10 is rectangular. The main view shape of the movable hole 13 is the same as the main view shape of the snap-fit ​​block 10.

[0021] First, the operator inserts the annular connecting plate 6 on filter box 3 into the annular fixing plate 7 on spray pipe 2, aligning the groove 8 on the annular connecting plate 6 with the groove 8 on the annular fixing plate 7. Then, using a flathead screwdriver, the operator inserts it into the slot 17 on the locking rod 9 and rotates the locking rod 9 within the groove 8, causing it to rotate from the placement slot 12 to the movable hole 13. Because the locking rod 9 is positioned within the groove 8 on the annular connecting plate 6, it compresses the return spring 16. The elasticity generated by the compressed return spring 16 then drives the locking block 10 on the locking rod 9 to move outward through the movable hole 13. When moved to the placement slot 11, the screwdriver can be turned in the opposite direction to make the locking rod 9 drive the locking block 10 to rotate 90 degrees and enter the placement slot 11, thereby locking the annular connecting plate 6 and the annular fixing plate 7. Then, the operator repeats the above operation, locking the locking mechanism in the remaining grooves 8 on the annular connecting plate 6 with the annular fixing plate 7. At this time, the locking of the spray pipe 2 and the filter box 3 is completed. Finally, the operator repeats the above operation again, locking the filter box 3 and the spray pipe 4. At this time, the installation of the filter box 3 is completed. The multi-stage filter screen in the filter box 3 filters the smaller impurities in the liquid, increasing the filtration effect of the equipment.

[0022] An annular connecting plate 61 is fixedly connected to the side of the annular connecting plate 6 away from the spray pipe 2. The outer contour of the annular connecting plate 61 is provided with a linear array of sealing rings 62.

[0023] By connecting the two annular plug-in plates 61 on the annular connecting plate 6 to the plug-in slots opened on the spray pipe 1 2 and the spray pipe 2 4 respectively for the annular plug-in plates 61 to be inserted, the annular plug-in plates 61 and the plug-in slots are used for initial sealing. Then, multiple sealing rings 62 on the annular plug-in plate 61 are used to form a labyrinth seal, thereby increasing the sealing effect when the equipment is in use.

[0024] Working principle: First, the operator inserts the annular connecting plate 6 on the filter box 3 into the annular fixing plate 7 on the spray pipe 2, aligning the groove 8 on the annular connecting plate 6 with the groove 8 on the annular fixing plate 7. Then, the operator uses a flathead screwdriver to insert into the slot 17 on the locking rod 9 and rotates the locking rod 9 in the groove 8, causing the locking rod 9 to rotate from the placement slot 12 to the movable hole 13. Because the locking rod 9 is in the groove 8 on the annular connecting plate 6, the locking rod 9 compresses the return spring 16, and the elasticity generated by the compressed return spring 16 drives the locking mechanism on the locking rod 9. Block 10 moves outward through the movable hole 13. When the locking block 10 moves to the placement groove 11, the screwdriver can be turned in the opposite direction to make the locking rod 9 drive the locking block 10 to rotate 90 degrees and enter the placement groove 11, thereby locking the annular connecting plate 6 and the annular fixing plate 7. Then, the operator repeats the above operation and locks the locking mechanism in the remaining grooves 8 on the annular connecting plate 6 with the annular fixing plate 7. At this time, the locking of the spray pipe 2 and the filter box 3 is completed. Finally, the operator repeats the above operation and locks the filter box 3 and the spray pipe 4. At this time, the installation of the filter box 3 is completed.

[0025] When the liquid enters the spray pipe 1 and is sent to the spray pipe 2, it enters the filter box 3. The multi-stage filter screen in the filter box 3 filters out smaller particles in the liquid, increasing the filtration effect. Since the multi-stage filter screen in the filter box 3 has been used for a long time and needs to be cleaned regularly, the staff can disassemble the filter box 3 through the locking mechanism, and then the staff can disassemble and replace the multi-stage filter screen in the filter box 3.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spraying device for a ceramic sandblasting machine for PCB boards, comprising a spraying tube (1), characterized in that: Spray pipe one (2) is fixedly connected to the outer contour of the spray pipe (1). A filter box (3) is detachably connected to the bottom of the spray pipe one (2). A spray pipe two (4) is detachably connected to the bottom of the filter box (3). A nozzle (5) is provided at the bottom of the spray pipe two (4). An annular connecting plate (6) is fixedly connected to both ends of the filter box (3). An annular fixing plate (7) is provided at the bottom of the spray pipe one (2) and the top of the spray pipe two (4) to engage with the annular connecting plate (6). Grooves (8) are arranged in a circular array on the outer contour of the annular connecting plate (6) and the annular fixing plate (7). A locking mechanism is provided in the groove (8).

2. The spraying device of the ceramic sandblasting machine for PCB board according to claim 1, characterized in that: The locking mechanism includes a locking rod (9) that is slidably connected in the groove (8). A locking block (10) is fixedly connected to the outer contour of the locking rod (9) near the annular fixing plate (7). An elastic element is provided on the locking rod (9).

3. The spraying device of a ceramic sandblasting machine for PCB board according to claim 2, characterized in that: The inner wall of the groove (8) near the annular connecting plate (6) and the inner wall of the groove (8) near the annular fixing plate (7) are respectively provided with a first placement groove (11) and a second placement groove (12) for the card-connecting block (10) to be engaged. The inner walls of the first placement groove (11) and the second placement groove (12) are provided with a movable hole (13) for the card-connecting block (10) to be slidably connected.

4. The spraying device of the ceramic sandblasting machine for PCB board according to claim 2, characterized in that: The elastic element includes a fixing rod (14) fixedly connected to the inner wall of the groove (8) on the other side near the annular connecting plate (6). The end of the fixing rod (14) is disposed on the inner wall of the snap-fit ​​rod (9). The end of the fixing rod (14) is fixedly connected to a fixing plate (15) rotatably connected to the inner wall of the snap-fit ​​rod (9). A return spring (16) is disposed on the fixing plate (15) and contacts the inner wall of the snap-fit ​​rod (9).

5. The spray device for a ceramic sandblasting machine for PCB boards according to claim 2, characterized in that: The surface of the snap-fit ​​rod (9) has a through slot (17) extending to the fixed connecting plate (15).

6. The spray device for a ceramic sandblasting machine for PCB boards according to claim 4, characterized in that: A threaded hole (18) is fixedly connected to the side of the fixed plate (15) near the fixed rod (14), and a threaded block (19) adapted to the threaded hole (18) is provided on the fixed rod (14).

7. The spray device of a ceramic sandblasting machine for PCB board according to claim 3, characterized in that: The main view shape of the snap-fit ​​block (10) is rectangular, and the main view shape of the movable hole (13) is the same as that of the snap-fit ​​block (10).

8. The spraying device for a ceramic sandblasting machine for PCB boards according to claim 1, characterized in that: An annular plug plate (61) is fixedly connected to the side of the annular connecting plate (6) away from the spray pipe (2), and a sealing ring (62) is installed in a linear array on the outer contour of the annular plug plate (61).

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