Multi-channel PCB spraying device

Abstract

The utility model relates to the technical field of PCB (printed circuit board) spraying devices, in particular to a multi-channel PCB spraying device, which comprises a machine body and is characterized in that a plurality of spraying cavities are arranged in the machine body, a through conveying belt is arranged among the spraying cavities, and mounting frames are connected to the positions, on the upper side and the lower side of the conveying belt, in the spraying cavities. When the multi-channel PCB spraying device provided by the utility model is used, the upper group of nozzles and the lower group of nozzles are used for spraying and cleaning the PCB, the cleaning effect is sufficient, and the liquid is conveyed to the nozzles through the liquid distribution hoses to form a multi-channel liquid outlet structure, so that the PCB can be sprayed and cleaned conveniently. Compared with a mode that one liquid conveying channel is communicated with a plurality of nozzles in a traditional spraying device, the water supply condition of each pipeline during spraying is stable and uniform, the conditions of pressure and the like between the pipelines are consistent, water output of the nozzles during spraying is more uniform, and the spraying and cleaning effect of the PCB can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board spraying devices, in particular to a multi-channel PCB board spraying device. Background Art

[0002] PCBs, or printed circuit boards, connect electronic components and integrate their functions, enabling the proper functioning of various electronic devices. They are widely used in electronic products such as computers, mobile phones, televisions, and various instruments.

[0003] During PCB production, PCBs need to be spray cleaned. The purpose of spraying is to remove dust, oil, oxides and other impurities on the surface of the PCB, providing a clean surface for subsequent processing and welding operations, ensuring good connection and reliability, and making the PCB surface more solderable, which is conducive to the subsequent strong welding of components.

[0004] Current PCB cleaning devices mostly use a single-channel spray structure, with one infusion channel connecting multiple spray heads. This structure has a low implementation cost, but during use, due to the different distances between each nozzle and the infusion channel, the water pressure of nozzles closer to the water source is relatively high, while the water pressure of nozzles farther away is relatively low. As a result, the water output from each nozzle is uneven, which affects the spray cleaning effect of the PCB board.

[0005] Therefore, those skilled in the art provide a multi-channel PCB spraying device to solve the problems raised in the above background technology. Utility Model Content

[0006] The purpose of this utility model is to provide a multi-channel PCB board spraying device to solve the following technical problems:

[0007] How to improve the water output uniformity of the PCB board spray device and enhance the spraying effect.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] A multi-channel PCB spray device comprises a body, a plurality of spray chambers are defined within the body, a conveyor belt is provided between the plurality of spray chambers, mounting brackets are connected to the upper and lower sides of the conveyor belt within the spray chambers, and a plurality of nozzles are fixedly connected to the end surfaces of the two mounting brackets facing the conveyor belt;

[0010] The upper end surface of the body is fixedly connected to a plurality of branch pipes, the lower ends of the plurality of branch pipes are fixedly connected to a plurality of liquid separation hoses, one end of one of the liquid separation hoses is connected to two nozzles, and a joint is provided between the liquid separation hose and the connecting pipelines of the two connected nozzles.

[0011] Furthermore, the outer end of the branch pipe is fixedly connected with a control valve and a pressure gauge;

[0012] Furthermore, the joint includes an upper joint, a lower joint and a tooth cover;

[0013] Furthermore, the upper joint includes a first joint body, one side of which is fixedly connected to a plurality of convex tubes, and the other side of which is fixedly connected to a screw tube, the screw tube being in communication with the convex tube; the lower joint includes a second joint body, the interior of which is fixedly embedded with a plurality of concave tubes, the convex tubes being plugged into the concave tubes, and the threaded cover being sleeved on the outer end of the connection between the upper joint and the lower joint;

[0014] Furthermore, the tooth cover includes a cover body, a retaining groove is formed on one side of the interior of the cover body, and an internal thread is provided on the other side; the outer end of the second joint body is fixedly connected to the external thread, and the external thread is sleeved with the internal thread; the outer end of the first joint body is fixedly connected to the retaining edge, and the retaining edge is clamped with the retaining groove;

[0015] Furthermore, a plurality of liquid pumps are fixedly connected to the rear side of the body, the output end of the liquid pump is fixedly connected to a main liquid infusion tube, one end of the main liquid infusion tube is fixedly connected to two branch liquid tubes, and the plurality of branch liquid tubes are fixedly connected to the two branch liquid tubes respectively;

[0016] Furthermore, the two liquid dispensing tubes are arranged alternately up and down;

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a multi-channel PCB board spray device. When in use, the device sprays liquid through two sets of upper and lower nozzles to spray and clean the PCB board, and the cleaning effect is sufficient. The liquid is transported to the nozzles through a liquid separation hose, and one liquid separation hose connects the two nozzles, forming a multi-channel liquid outlet structure. Compared with the method of connecting multiple nozzles with one infusion channel in traditional spray devices, this multi-channel structure avoids the situation where the water pressure of nozzles close to the water source is relatively high, while the water pressure of nozzles far away is low, resulting in uneven water discharge. Therefore, the water supply of each pipeline is relatively stable and uniform during spraying, and the pressure and other conditions between the pipes are consistent. The water discharge of the nozzles during spraying is more uniform, which can improve the spray cleaning effect of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a front view of a multi-channel PCB board spraying device provided by the utility model;

[0021] Figure 2This is a side view of a multi-channel PCB spray device provided by the utility model;

[0022] Figure 3 This utility model provides a nozzle connection structure for a multi-channel PCB board spraying device.

[0023] Figure 4 This is a structural diagram of the upper connector of a multi-channel PCB board spraying device provided by the utility model;

[0024] Figure 5 This is a structural diagram of the tooth cover of a multi-channel PCB board spraying device provided by the utility model

[0025] Figure 6 This is a structural diagram of the lower joint of a multi-channel PCB board spraying device provided by the utility model.

[0026] Reference numerals:

[0027] 1. Machine body; 2. Spray chamber; 3. Conveyor belt; 4. Connector; 41. Upper connector; 411. First connector body; 412. Threaded tube; 413. Stop edge; 414. Protruding tube; 42. Threaded cover; 421. Cover body; 422. Stop groove; 423. Internal thread; 43. Lower connector; 431. Second connector body; 432. Recessed tube; 433. External thread; 5. Dispensing pipe; 6. Branch pipe; 7. Control valve; 8. Pressure gauge; 9. Dispensing hose; 10. Mounting bracket; 11. Liquid pump; 12. Main infusion pipe; 13. Nozzle. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Please see the attached Figures 1 to 4As shown, a multi-channel PCB board spraying device in an embodiment of the present invention includes a body 1, a plurality of spray chambers 2 are opened inside the body 1, a conveyor belt 3 is provided between the plurality of spray chambers 2, and a mounting frame 10 is connected to the upper and lower sides of the conveyor belt 3 inside the spray chamber 2, and a plurality of nozzles 13 are fixedly connected to the end faces of the two mounting frames 10 facing the conveyor belt 3. When spraying, the PCB board is conveyed by the conveyor belt 3. When the PCB board moves into the spray chamber 2, its upper and lower surfaces will contact the liquid sprayed by the nozzle 3. The PCB board is sprayed and cleaned by the liquid to remove impurities such as dust, oil, oxides, etc. on the surface of the PCB board, thereby providing a clean surface for subsequent processing and welding operations, ensuring good connection and reliability. The PCB board passes through the plurality of spray chambers 2 in sequence and can be fully cleaned.

[0030] The upper end surface of the body 1 is fixedly connected with multiple branch pipes 6, and the lower ends of the multiple branch pipes 6 are fixedly connected with multiple liquid separation hoses 9. One end of a liquid separation hose 9 is connected to two nozzles 13, and a connector 4 is provided between the liquid separation hose 9 and the connecting pipeline of the two connected nozzles 13. The multi-channel structure design of one liquid separation hose 9 connecting the two nozzles 13 makes the water supply between the two nozzles 13 more stable and uniform. When the pressure and other conditions between the liquid separation hoses 9 are consistent, the water output of each connector 4 during spraying will also be more uniform, which can improve the spray cleaning effect of the PCB board.

[0031] The outer end of the branch pipe 6 is fixedly connected to a control valve 7 and a pressure gauge 8. The control valve 7 is used to adjust the flow of the branch pipe 6, and the pressure gauge 8 is used to detect the liquid flow inside the branch pipe 6. When the pressure of the branch pipe 6 is abnormal, it can be quickly discovered and adjusted through the control valve 7 to ensure that each nozzle 13 can discharge water evenly.

[0032] The joint 4 comprises an upper joint 41 , a lower joint 43 and a tooth cover 42 . The joint 4 adopts a split structure, which is easy to disassemble and more convenient for maintenance.

[0033] The upper joint 41 includes a first joint body 411, one side of the first joint body 411 is fixedly connected to a plurality of convex pipes 414, and the other side is fixedly connected to a screw pipe 412, the screw pipe 412 is connected to the convex pipe 414, the lower joint 43 includes a second joint body 431, the interior of the second joint body 431 is fixedly embedded with a plurality of concave pipes 432, the convex pipes 414 are plugged into the concave pipes 432, the thread cover 42 is sleeved on the outer end of the connection between the upper joint 41 and the lower joint 43, the thread cover 42 includes a cover body 421, one side of the interior of the cover body 421 is provided with a retaining groove 422, and the other side is provided with an internal thread 423 The outer end of the second joint body 431 is fixedly connected with an external thread 433, and the external thread 433 is sleeved with the internal thread 423. The outer end of the first joint body 411 is fixedly connected with a retaining edge 413, and the retaining edge 413 is clamped with the retaining groove 422. When the joint 4 is installed, the second joint body 431 is connected and fixed to the liquid separation lubrication pipe 9, and the screw pipe 412 is connected and fixed to the pipeline between the two nozzles 13. When connecting, first align and plug the outer convex pipe 414 of the upper joint 41 with the inner concave pipe 432 of the lower joint 43, and then connect the tooth cover 42 sleeved on the outer end of the first joint 411 to the lower joint 43 through threads to complete the installation.

[0034] A plurality of liquid pumps 11 are fixedly connected to the rear side of the body 1, and the output end of the liquid pump 11 is fixedly connected to the main infusion pipe 12. One end of the main infusion pipe 12 is fixedly connected to two branch pipes 5. A plurality of branch pipes 6 are fixedly connected to the two branch pipes 5 respectively. The two branch pipes 5 are staggered up and down. The liquid is pressurized and pumped out by the provided liquid pump 11 and transported to the two branch pipes 5 by the main infusion pipe 12. The two branch pipes 5 are respectively used to supply liquid to the nozzles 13 on the upper and lower sides. The staggered arrangement up and down is convenient for distinction.

[0035] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A multi-channel PCB spraying device, comprising a body (1), characterized in that: A plurality of spray chambers (2) are provided inside the machine body (1), a conveyor belt (3) is provided between the plurality of spray chambers (2), mounting brackets (10) are connected to the upper and lower sides of the conveyor belt (3) inside the spray chamber (2), and a plurality of nozzles (13) are fixedly connected to the end surfaces of the two mounting brackets (10) facing the conveyor belt (3); The upper end surface of the machine body (1) is fixedly connected to a plurality of branch pipes (6), and the lower ends of the plurality of branch pipes (6) are fixedly connected to a plurality of liquid separation hoses (9). One end of one of the liquid separation hoses (9) is connected to one or two nozzles (13), and a joint (4) is provided between the liquid separation hose (9) and the connecting pipeline of the one or two nozzles (13).

2. The multi-channel PCB spraying device according to claim 1, characterized in that: The outer end of the branch pipe (6) is fixedly connected to a control valve (7) and a pressure gauge (8).

3. The multi-channel PCB spraying device according to claim 1, characterized in that: The joint (4) comprises an upper joint (41), a lower joint (43) and a tooth cover (42).

4. The multi-channel PCB spraying device according to claim 3, characterized in that: The upper joint (41) includes a first joint body (411), one side of the first joint body (411) is fixedly connected to a plurality of convex pipes (414), and the other side is fixedly connected to a screw pipe (412), and the screw pipe (412) is communicated with the convex pipe (414). The lower joint (43) includes a second joint body (431), the interior of the second joint body (431) is fixedly embedded with a plurality of concave pipes (432), the convex pipes (414) and the concave pipes (432) are plugged into each other, and the tooth cover (42) is sleeved on the outer end of the connection between the upper joint (41) and the lower joint (43).

5. The multi-channel PCB spraying device according to claim 4, characterized in that: The tooth cover (42) includes a cover body (421), a retaining groove (422) is provided on one side of the interior of the cover body (421), and an internal thread (423) is provided on the other side. The outer end of the second joint body (431) is fixedly connected with an external thread (433), and the external thread (433) is sleeved with the internal thread (423). The outer end of the first joint body (411) is fixedly connected with a retaining edge (413), and the retaining edge (413) is clamped with the retaining groove (422).

6. The multi-channel PCB spraying device according to claim 1, characterized in that: A plurality of liquid pumps (11) are fixedly connected to the rear side of the machine body (1), an output end of the liquid pump (11) is fixedly connected to a main liquid infusion pipe (12), one end of the main liquid infusion pipe (12) is fixedly connected to two liquid branch pipes (5), and the plurality of branch pipes (6) are respectively fixedly connected to the two liquid branch pipes (5).

7. The multi-channel PCB spraying device according to claim 6, characterized in that: The two liquid separation tubes (5) are arranged alternately up and down.

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