PCBA board conformal coating automatic spraying machine

Abstract

The utility model discloses a PCBA board conformal coating automatic spraying machine, relates to conformal coating spraying technical field, including stepping conveyor and install the automatic spraying machine on the upper surface of stepping conveyor, the upper surface of stepping conveyor is located the left side of automatic spraying machine and is equipped with the fixed mount, the fixed mount outside is provided with the positioning mechanism. Compared with an existing common PCBA board three-proofing paint automatic spraying machine, the PCBA board three-proofing paint automatic spraying machine has the advantages that an operator only needs to roughly place the PCBA board on the stepping conveyor, the PCBA board is conveyed to the designated position of the automatic spraying machine through the stepping conveyor to be sprayed, if the size of the PCBA board changes, the PCBA board can be unscrewed, the limiting sliding rod can be adjusted in a sliding mode, and the PCBA board can be automatically sprayed. The positioning plate can be attached to a PCBA board for attachment positioning, during positioning, the rubber rolling wheels can reduce friction during attachment positioning of the positioning plate, and the rubber rolling wheels can be conveniently detached and replaced through the design of the rolling wheel grooves and the screw rods.

Description

Technical Field

[0001] The utility model relates to the technical field of three-proof paint spraying, in particular to an automatic three-proof paint spraying machine for PCBA boards. Background Art

[0002] In the production process of PCBA boards, in order to protect the circuit boards and related equipment from environmental erosion, it is usually necessary to spray the PCBA boards with three-conformal paint. The three-conformal paint coating is used to protect the PCBA boards. There are two main coating methods: one is to coat the surface of the PCBA board with a brush, and the other is to directly coat the surface of the PCBA board with a spray gun.

[0003] For example, the application number is 202223079595.3, which is a spraying machine for PCBA board production. The utility model starts the electric slide rail by the staff, and the slider drives the connecting frame to move along the electric slide rail. The connecting frame drives the push plate and the placement plate to move, and the PCBA board also moves accordingly. Then the staff starts the spraying machine body, and the spraying machine body moves to the top of the PCBA board. The nozzle sprays the PCBA board with three-proof paint, and then the PCBA board can be moved to spray the three-proof paint to prevent excessive spraying from affecting the quality of the PCBA board. However, the device needs to be placed and positioned manually one by one, and the spraying efficiency is low. When replacing PCBA boards of different sizes, it is inconvenient to adjust.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an automatic spraying machine for PCBA board triple-conformal paint is proposed. Utility Model Content

[0005] The utility model aims to provide an automatic spraying machine for three-proof coating of PCBA board to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic spraying machine for triple-proof coating of PCBA boards, comprising a stepping conveyor and an automatic spraying machine installed on the upper surface of the stepping conveyor, a fixing frame is installed on the left side of the automatic spraying machine on the upper surface of the stepping conveyor, and a positioning mechanism is arranged on the outside of the fixing frame.

[0007] Preferably, the positioning mechanism includes a transmission motor fixedly connected to the front surface of the fixed frame, the output end of the transmission motor is fixedly connected to a bidirectional reciprocating screw, the outer cylindrical surface of the bidirectional reciprocating screw is threadedly connected to two nut seats, and a positioning plate is provided on the lower surface of the nut seat.

[0008] Preferably, a limiting slide rod is fixedly connected between the outer surfaces of the fixing frame, a sliding block is slidably connected to the outer circular surface of the limiting slide rod, and the lower surface of the sliding block is fixedly connected to the upper surface of the nut seat.

[0009] Preferably, the lower surface of the nut seat is fixedly connected to a base plate, a socket is opened on the outer surface of the base plate, a fixed plug rod is fixedly connected to the outer surface of the positioning plate, and the fixed plug rod passes through the inside of the socket, and the upper surface of the base plate extends to the internal thread of the socket and is connected to a locking screw.

[0010] Preferably, a roller groove is formed on the outer surface of the positioning plate extending to the lower surface, and a rubber roller is connected to the inner screw of the roller groove.

[0011] Preferably, the front and rear surfaces of the stepping conveyor are extended upwardly and are equipped with side panels, one end of the side panel is fixedly connected to a protective plate, a curtain is installed on the lower surface of the protective plate, and a maintenance cover is rotatably connected to the upper surface of the side panel.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a stepping conveyor, an automatic spraying machine, a fixing frame, a positioning mechanism, a transmission motor, a two-way reciprocating screw, a nut seat, a positioning plate, a limit slide bar, a slider, a base plate, a jack, a fixed plug rod, a locking screw, a roller groove, and a rubber roller. The operator only needs to roughly place the PCBA board on the stepping conveyor. The transmission motor on the fixing frame can drive the two-way reciprocating screw to rotate. Under the limiting action of the limit slide bar and the slider, the two nut seats can reciprocate, drive the positioning plate to cooperate with the stepping conveyor to perform a centering positioning operation, and the positioning Finally, it is transferred by the stepping conveyor to the designated position of the automatic spraying machine for spraying. If the size of the PCBA board changes, the locking screw can be loosened, and the position of the limit slide bar in the jack can be adjusted so that it can fit the PCBA board for fitting and positioning. Then the locking screw is tightened to fix the position. During positioning, the rubber roller can reduce the friction of the positioning plate during the transmission of the stepping conveyor. The design of the roller groove and the screw is convenient for the disassembly and replacement of the rubber roller. This design is convenient for spraying and positioning of PCBA boards of different sizes.

[0014] 2. The utility model is provided with side panels, protective panels, curtains and maintenance covers. The curtains under the protective panels can provide protection as much as possible without causing excessive impact on the transmission of the PCBA board. The rotating maintenance cover facilitates maintenance of the internal positioning mechanism. This design can reduce the pollution of the external environment to the automatic spray machine environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the positioning mechanism 4 of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the substrate 7 of the utility model;

[0018] Figure 4 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0019] In the figure: 1. Stepping conveyor; 2. Automatic spraying machine; 3. Fixed frame; 4. Positioning mechanism; 41. Transmission motor; 42. Bidirectional reciprocating screw; 43. Nut seat; 44. Positioning plate; 5. Limiting slide bar; 6. Slider; 7. Base plate; 8. Socket; 9. Fixed plug rod; 10. Locking screw; 11. Roller groove; 12. Rubber roller; 13. Side panel; 14. Protective plate; 15. Curtain cloth; 16. Maintenance cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 3As shown, a PCBA board three-proof paint automatic spraying machine includes a stepping conveyor 1 and an automatic spraying machine 2 installed on the upper surface of the stepping conveyor 1. The upper surface of the stepping conveyor 1 is located on the left side of the automatic spraying machine 2 and is installed with a fixing frame 3. A positioning mechanism 4 is arranged outside the fixing frame 3. The positioning mechanism 4 includes a transmission motor 41 fixedly connected to the front surface of the fixing frame 3. The output end of the transmission motor 41 is fixedly connected to a bidirectional reciprocating screw rod 42. The outer cylindrical surface of the bidirectional reciprocating screw rod 42 is threadedly connected to two nut seats 43. A positioning plate 44 is arranged on the lower surface of the nut seat 43. A limiting slide rod 5 is fixedly connected between the outer surfaces of the fixing frame 3. A slider 6 is slidably connected to the outer cylindrical surface of the limiting slide rod 5, and the lower surface of the slider 6 is fixedly connected to the upper surface of the nut seat 43. A base plate 7 is fixedly connected to the lower surface of the nut seat 43. A socket 8 is provided on the outer surface of the base plate 7. A fixed plug rod 9 is fixedly connected to the outer surface of the positioning plate 44, and the fixed plug rod 9 passes through the inside of the socket 8. The upper surface of the base plate 7 extends to the internal thread of the socket 8. The locking screw 10 is connected, and the outer surface of the positioning plate 44 extends to the lower surface to open a roller groove 11. The inner screw of the roller groove 11 is connected to the rubber roller 12. The operator only needs to roughly place the PCBA board on the stepping conveyor 1. The transmission motor 41 on the fixed frame 3 can drive the bidirectional reciprocating screw 42 to rotate. Under the limiting action of the limiting slide bar 5 and the slider 6, the two nut seats 43 can reciprocate, driving the positioning plate 44 to cooperate with the stepping conveyor 1 to perform the centering positioning operation. After positioning, the stepping The conveyor 1 is transmitted to the designated position of the automatic sprayer 2 for spraying. If the size of the PCBA board changes, the locking screw 10 can be loosened, and the position of the limit slide bar 5 in the socket 8 can be adjusted so that it can fit the PCBA board for fitting and positioning. Then the locking screw 10 is tightened to fix the position. During positioning, the rubber roller 12 can reduce the friction of the positioning plate 44 when it is fitted and positioned during the transmission process of the stepping conveyor 1. The design of the roller groove 11 and the screw facilitates the disassembly and replacement of the rubber roller 12.

[0022] Furthermore, one end of the positioning plate 44 is fixedly connected with an extension block. When the positioning plate 44 is fitted and positioned, the stepping conveyor 1 continues to convey, and the right side of the PCBA board fits the extension block, so that the spraying position can be positioned.

[0023] like Figure 4 As shown, the front and rear surfaces of the stepping conveyor 1 extend upwardly and are equipped with a side panel 13, one end of the side panel 13 is fixedly connected to a protective panel 14, a curtain 15 is installed on the lower surface of the protective panel 14, and a maintenance cover 16 is rotatably connected to the upper surface of the side panel 13. The rotatable maintenance cover 16 facilitates maintenance of the internal positioning mechanism 4.

[0024] Working principle: When using the PCBA board three-proof paint automatic spraying machine, first, the operator only needs to roughly place the PCBA board on the stepping conveyor 1, and the transmission motor 41 on the fixed frame 3 can drive the two-way reciprocating screw 42 to rotate. Under the limiting action of the limit slide 5 and the slider 6, the two nut seats 43 can reciprocate, driving the positioning plate 44 to cooperate with the stepping conveyor 1 to perform the centering positioning operation. After positioning, it is transmitted by the stepping conveyor 1 to the designated position of the automatic spraying machine 2 for spraying. If the size of the PCBA board changes, the locking screw 10 can be loosened, and the limit slide 5 can be slid to adjust the position. The rubber roller 12 can reduce the friction of the positioning plate 44 during the transmission of the stepping conveyor 1. The design of the roller groove 11 and the screw facilitates the disassembly and replacement of the rubber roller 12. The curtain 15 under the protective plate 14 will not cause too much impact on the transmission of the PCBA board while protecting it as much as possible. The rotating maintenance cover 16 facilitates the maintenance of the internal positioning mechanism 4. This is the working principle of the PCBA board three-proof paint automatic spraying machine.

Claims

1. An automatic spraying machine for PCBA board conformal coating, comprising a stepping conveyor (1) and an automatic spraying machine (2) installed on the upper surface of the stepping conveyor (1), characterized in that: The upper surface of the stepping conveyor (1) is located on the left side of the automatic spraying machine (2) and is equipped with a fixing frame (3). A positioning mechanism (4) is arranged outside the fixing frame (3). The positioning mechanism (4) comprises a transmission motor (41) fixedly connected to the front surface of the fixing frame (3). The output end of the transmission motor (41) is fixedly connected to a bidirectional reciprocating screw rod (42). The outer cylindrical surface of the bidirectional reciprocating screw rod (42) is threadedly connected to two nut seats (43). The lower surface of the nut seat (43) is provided with a positioning plate (44).

2. The PCBA board conformal coating automatic spraying machine according to claim 1, characterized in that: A limiting slide bar (5) is fixedly connected between the outer surfaces of the fixing frame (3), a sliding block (6) is slidably connected to the outer circumferential surface of the limiting slide bar (5), and the lower surface of the sliding block (6) is fixedly connected to the upper surface of the nut seat (43).

3. The PCBA board three-proof paint automatic spraying machine according to claim 1 is characterized in that: The lower surface of the nut seat (43) is fixedly connected to a base plate (7), the outer surface of the base plate (7) is provided with a socket (8), the outer surface of the positioning plate (44) is fixedly connected to a fixed plug rod (9), and the fixed plug rod (9) passes through the inside of the socket (8), and the upper surface of the base plate (7) extends to the inside of the socket (8) and is threadedly connected to a locking screw (10).

4. The PCBA board conformal coating automatic spraying machine according to claim 1, characterized in that: The outer surface of the positioning plate (44) extends to the lower surface and is provided with a roller groove (11), and the internal screw of the roller groove (11) is connected to a rubber roller (12).

5. The PCBA board conformal coating automatic spraying machine according to claim 1, characterized in that: The front and rear surfaces of the stepping conveyor (1) extend upward and are equipped with a side plate (13), one end of the side plate (13) is fixedly connected to a protective plate (14), a curtain (15) is installed on the lower surface of the protective plate (14), and a maintenance cover (16) is rotatably connected to the upper surface of the side plate (13).

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