Printed circuit board (PCB) electrostatic spraying device

Abstract

The utility model relates to the technical field of PCB (printed circuit board) spraying, in particular to a PCB electrostatic spraying device, which comprises a spraying box and a threaded rod, a heating box is mounted on the inner wall of the spraying box, an electric heating wire is mounted in the heating box, the threaded rod is rotatably mounted on the inner wall of the spraying box, a sliding block is mounted on the threaded rod in a threaded manner, and the sliding block is movably mounted on the spraying box. A supporting rod is mounted at the upper end of the sliding block, a supporting plate is mounted at the upper end of the supporting rod, a positive electrode plate is mounted at the upper end of the supporting plate in an embedded mode, mounting plates which are symmetrically distributed are welded to the lower end of the supporting plate, the mounting plates are arranged in an L shape, and first electric push rods are mounted at the upper ends of the mounting plates; a fixing rod is installed at the tail end of a piston rod of the first electric push rod, a fixing plate is installed at the tail end of the fixing rod, and a second electric push rod is installed at the side end of the fixing plate. The PCB spraying device has the advantages that the PCB spraying layer can be dried, the PCB can be turned over and sprayed, and the processing efficiency of the PCB can be improved.

Description

Technical Field

[0001] This utility model relates to the field of PCB board spraying technology, specifically to a PCB electrostatic spraying device. Background Technology

[0002] A PCB, or Printed Circuit Board, is an indispensable basic component in modern electronic devices. A PCB is a substrate used to assemble electronic components, typically made of one or more layers of insulating material with printed copper traces that connect the various parts of the circuit. Electrostatic spraying is a coating method that utilizes the principle of corona discharge to negatively charge atomized paint under a high-voltage DC electric field, causing it to adhere to the positively charged substrate surface and discharge.

[0003] In PCB board spraying, the sprayed paint cannot dry quickly, and the coating layer is easily damaged when it is removed after spraying. Moreover, after one side of the PCB board is sprayed, the workers need to manually flip it over to spray the other side, which increases the workload of the workers and reduces the efficiency of PCB board spraying. Utility Model Content

[0004] The purpose of this invention is to provide a PCB electrostatic spraying device that can dry the PCB coating layer and flip the PCB for spraying, thereby improving its processing efficiency and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PCB electrostatic spraying device, comprising a spraying box and a threaded rod. A heating box is installed on the inner wall of the spraying box, and an electric heating wire is installed inside the heating box. The threaded rod is rotatably installed on the inner wall of the spraying box, and a sliding block is threadedly installed on the threaded rod. A support rod is installed at the upper end of the sliding block, and a support plate is installed at the upper end of the support rod. A positive electrode plate is embedded at the upper end of the support plate. A mounting plate with symmetrical distribution is welded to the lower end of the support plate. The mounting plate is L-shaped. A first electric push rod is installed at the upper end of the mounting plate. A fixing rod is installed at the end of the piston rod of the first electric push rod, and a fixing plate is installed at the end of the fixing rod. A second electric push rod is installed at the side end of the fixing plate. A second driving device is installed at the end of the piston rod of the second electric push rod, and a clamping and flipping plate is installed at the end of the main shaft of the second driving device.

[0006] When using the PCB electrostatic spraying device of this utility model, the PCB board is placed on the upper part of the support plate after the box door is opened during processing. Then, the box door is closed for spraying. The spraying pump delivers the paint from the paint tank to the electrostatic spray gun, which sprays the paint onto the PCB board. The electrostatic spray gun is the negative electrode, and the PCB board is in contact with the positive electrode plate, thus forming an electrostatic field. The paint particles are atomized and become negatively charged as they pass through the spray gun. Under the action of the electrostatic field, the charged paint particles are efficiently and uniformly adsorbed onto the surface of the PCB board along the direction of the electric field lines to form a uniform coating. During the spraying process, the first driving device can rotate the threaded rod. With the cooperation of the sliding block, the support plate can move the PCB board left and right, thereby adjusting the spraying position of the PCB board. After the PCB board is sprayed on one side, the air in the spraying box is heated by the electric heating wire, which can dry the coating on the PCB board. After drying, the clamping flip plate is brought closer together by the operation of two second electric push rods. The clamping flip plate can clamp the PCB board. The clamping PCB board is raised by the operation of the first electric push rod. The clamping PCB board is flipped by the operation of the second drive device so that the unsprayed side of the PCB board is facing up. Then the PCB board is lowered and the clamping is released, so that it is placed back on the support plate for spraying again.

[0007] Preferably, a base is installed at the lower end of the spray box, and there are four bases in total, which are arranged in an array about the spray box.

[0008] Preferably, the upper end of the spray box is provided with a paint tank and a spray pump, the spray pump is located on one side of the paint tank, and the upper end of the paint tank is provided with a feed pipe, and a threaded cap is threadedly installed on the feed pipe.

[0009] Preferably, an exhaust vent is provided on one side of the upper end face of the spray box, and an electrostatic spray gun extending into the spray box is embedded in the upper end of the spray box. The spray pump is provided with a suction pipe and a feeding pipe, the suction pipe is connected to the paint tank, and the feeding pipe is connected to the electrostatic spray gun.

[0010] Preferably, the front end of the spray box is equipped with a door, and the front end of the door is equipped with a handle.

[0011] Preferably, the bottom inner wall of the spray box is provided with a limiting groove, and the lower end of the sliding block is equipped with a limiting slider, which is slidably installed in the limiting groove. The limiting slider and the limiting groove facilitate stable movement of the sliding block.

[0012] Preferably, a first driving device is installed on the side of the paint tank, and the main shaft of the first driving device is connected to the axis of the threaded rod. The operation of the first driving device can cause the threaded rod to rotate clockwise or counterclockwise, thereby moving the sliding block left and right.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model allows the PCB board to be flipped during the PCB board spraying process, and the sprayed coating on both sides of the PCB board can be dried after spraying, which can prevent damage to the sprayed coating on the PCB board and improve its processing efficiency. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention from a bottom view;

[0016] Figure 3 This is a frontal sectional view of the present invention.

[0017] Figure 4 This is a partial bottom view of the structure of this utility model;

[0018] Figure 5 This is a partial front view of the structure of this utility model.

[0019] The reference numerals and names in the figure are as follows:

[0020] 101. Spraying box; 102. Base; 103. Box door; 104. Exhaust vent; 105. Heating box; 106. Electric heating wire; 107. Limiting slide groove; 201. Paint box; 202. Feed pipe; 203. Spraying pump; 204. Electrostatic spraying gun; 301. Threaded rod; 302. First driving device; 303. Sliding block; 304. Limiting slider; 305. Support rod; 306. Support plate; 307. Positive electrode plate; 401. Mounting plate; 402. First electric push rod; 403. Fixing rod; 404. Fixing plate; 405. Second electric push rod; 406. Second driving device; 407. Clamping and flipping plate. Detailed Implementation

[0021] 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.

[0022] Example

[0023] Please see Figures 1 to 5 One embodiment of this utility model is a PCB electrostatic spraying device, comprising:

[0024] The spraying box 101 and the threaded rod 301 are configured. A heating box 105 is installed on the inner wall of the spraying box 101, and an electric heating wire 106 is installed inside the heating box 105. The threaded rod 301 is rotatably mounted on the inner wall of the spraying box 101. A sliding block 303 is threaded onto the threaded rod 301. A support rod 305 is installed at the upper end of the sliding block 303. A support plate 306 is installed at the upper end of the support rod 305. A positive electrode plate 307 is embedded in the upper end of the support plate 306. The lower end of the support plate 306 is welded... There are symmetrically distributed mounting plates 401, which are L-shaped. A first electric push rod 402 is mounted on the upper end of the mounting plate 401. A fixing rod 403 is mounted on the piston rod end of the first electric push rod 402. A fixing plate 404 is mounted on the end of the fixing rod 403. A second electric push rod 405 is mounted on the side end of the fixing plate 404. A second driving device 406 is mounted on the piston rod end of the second electric push rod 405. A clamping and flipping plate 407 is mounted on the spindle end of the second driving device 406.

[0025] In this embodiment, during processing, the box door 103 is opened to place the PCB board on the upper end of the support plate 306, and then the box door 103 is closed for spraying. The spraying pump 203 operates to transport the paint in the paint tank 201 to the electrostatic spray gun 204, which sprays the paint onto the PCB board. The electrostatic spray gun 204 is the negative electrode, and the PCB board is in contact with the positive electrode plate 307, forming an electrostatic field. When the paint particles pass through the spray gun, they are atomized and become negatively charged. Under the action of the electrostatic field, the charged paint particles are efficiently and uniformly adsorbed onto the surface of the PCB board along the electric field lines to form a uniform coating. During the spraying process, the first driving device 302 operates to rotate the threaded rod 301, and the sliding block 303... With the cooperation of the support plate 306, the PCB board can be moved left and right, thereby adjusting the spraying position of the PCB board. After the PCB board is sprayed on one side, the air inside the spraying box 101 can be heated by the electric heating wire 106, thereby drying the coating sprayed on the PCB board. After drying, the clamping flip plate 407 is brought closer together by the operation of the two second electric push rods 405. The clamping flip plate 407 can clamp the PCB board. The clamped PCB board is raised by the operation of the first electric push rod 402. The clamped PCB board can be flipped by the operation of the second drive device 406, so that the unsprayed side of the PCB board is facing up. Then the PCB board is lowered and the clamping is released, so that it is placed back on the support plate 306 for spraying again.

[0026] Furthermore, a base 102 is installed at the lower end of the spray box 101. There are four bases 102 in total, and the four bases 102 are arranged in an array about the spray box 101.

[0027] Furthermore, the upper end of the spray box 101 is provided with a paint tank 201 and a spray pump 203. The spray pump 203 is located on one side of the paint tank 201. The upper end of the paint tank 201 is provided with a feed pipe 202, and a threaded cap is threadedly installed on the feed pipe 202.

[0028] Furthermore, an exhaust port 104 is provided on one side of the upper end face of the spray box 101, and an electrostatic spray gun 204 extending into the spray box 101 is embedded in the upper end of the spray box 101. The spray pump 203 is provided with a material extraction pipe and a material feeding pipe. The material extraction pipe is connected to the paint box 201, and the material feeding pipe is connected to the electrostatic spray gun 204.

[0029] Furthermore, a door 103 is installed at the front end of the spray box 101, and a handle is installed at the front end of the door 103.

[0030] Furthermore, a limiting groove 107 is provided on the inner wall of the bottom end of the spray box 101, and a limiting slider 304 is installed at the lower end of the sliding block 303. The limiting slider 304 is slidably installed in the limiting groove 107.

[0031] Furthermore, a first driving device 302 is installed on the side end of the paint tank 201, and the main shaft of the first driving device 302 is connected to the axis of the threaded rod 301.

[0032] The electric heating wire 106, spray pump 203, electrostatic spray gun 204, positive electrode plate 307, driving device and electric push rod in this utility model are known devices. Their working principles and circuit connections are well known to those skilled in the art and belong to conventional means or common knowledge. This utility model only utilizes their functions and does not improve their structure. Therefore, it will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PCB electrostatic spraying device, comprising a spraying box (101) and a threaded rod (301), characterized in that: The inner wall of the spraying box (101) is provided with a heating box (105), and an electric heating wire (106) is arranged in the heating box (105); the threaded rod (301) is rotatably arranged on the inner wall of the spraying box (101), and the sliding block (303) is threadedly arranged on the threaded rod (301); the upper end of the sliding block (303) is provided with a supporting rod (305), the upper end of the supporting rod (305) is provided with a supporting plate (306), the upper end of the supporting plate (306) is embeddedly provided with a positive electrode plate (307), the lower end of the supporting plate (306) is welded with symmetrically distributed mounting plates (401), the mounting plates (401) are arranged in an L shape, the upper end of the mounting plate (401) is provided with a first electric push rod (402), the piston rod end of the first electric push rod (402) is provided with a fixed rod (403), the end of the fixed rod (403) is provided with a fixed plate (404), the side end of the fixed plate (404) is provided with a second electric push rod (405), the piston rod end of the second electric push rod (405) is provided with a second driving device (406), and the main shaft end of the second driving device (406) is provided with a clamping turnover plate (407).

2. The PCB electrostatic spray painting device according to claim 1, wherein: The lower end of the spraying box (101) is provided with a base (102), and four bases (102) are arranged in an array around the spraying box (101).

3. The PCB electrostatic spray painting device according to claim 1, wherein: The upper end of the spraying box (101) is provided with a coating box (201) and a spraying pump (203), the spraying pump (203) is arranged on one side of the coating box (201), the upper end of the coating box (201) is provided with a feeding pipe (202), and a threaded cover is threadedly arranged on the feeding pipe (202).

4. The PCB electrostatic spray painting device according to claim 3, wherein: The upper end of the spraying box (101) is provided with an exhaust hole (104) on one side, and the upper end of the spraying box (101) is embeddedly provided with an electrostatic spraying gun (204) extending into the spraying box (101), the spraying pump (203) is provided with a material pumping pipe and a material feeding pipe, the material pumping pipe is connected with the coating box (201), and the material feeding pipe is connected with the electrostatic spraying gun (204).

5. The PCB electrostatic spray painting device according to claim 1, wherein: The front end of the spraying box (101) is provided with a box door (103), and the front end of the box door (103) is provided with a handle.

6. The PCB electrostatic spray painting device according to claim 1, wherein: The bottom end of the spraying box (101) is provided with a limiting sliding groove (107) on the inner wall, and the lower end of the sliding block (303) is provided with a limiting sliding block (304) which is slidingly arranged in the limiting sliding groove (107).

7. The PCB electrostatic spray painting device according to claim 4, wherein: The side end of the coating box (201) is provided with a first driving device (302), and the main shaft of the first driving device (302) is connected with the axis of the threaded rod (301).

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