A printed wiring board solder resist coater

Abstract

The utility model relates to a kind of printed wiring board solder mask coating machine, including coating equipment and support platform;The side of coating equipment is provided with support platform, support platform is installed with support frame above, the inside of support frame is installed with the pretreatment mechanism for processing line base plate, the lower portion of pretreatment mechanism is provided with multiple groups and the guide roller of support frame is rotatably connected;Compared with prior art, the beneficial effects of the utility model are that: when placing line board base plate, staff directly places its line board base plate in friction conveying roller, without worrying whether base plate is placed horizontally, the length of line board base plate is greater than anti-corner collision mechanism, the advancing end of base plate is protruding compared with the side of anti-corner collision mechanism, at this time, base plate does not appear to be placed with its rotating roller collision when tilting, multiple friction conveying rollers can ensure that base plate is stably and horizontally conveyed in early stage, ensure the quality of base plate, so that staff can keep relaxed state.

Description

Technical Field

[0001] This utility model relates to the field of printed circuit board processing, and in particular to a solder resist coating machine for printed circuit boards. Background Technology

[0002] A solder resist ink coating machine is a device used to uniformly coat solder resist ink onto the surface of a specific substrate. It is widely used in industries such as printed circuit board (PCB) manufacturing. During PCB coating, the PCBs are concentrated on one side. The PCB substrates are manually removed and placed on a conveying mechanism, which typically uses multiple rotating rollers for transport. In actual operation, the inventors found that when manually placing the PCBs on multiple rotating rollers for transport, careful placement is required, and the PCBs must be placed horizontally. Otherwise, the sides or corners of the PCB substrates may collide directly with the rotating rollers, potentially damaging the PCB substrates. Furthermore, manually placing each PCB carefully is very laborious, making a simple task extremely tiring. Therefore, to address the above problems, a printed circuit board solder resist coating machine is proposed. Utility Model Content

[0003] In view of the above-mentioned problems in the prior art, the main purpose of this utility model is to provide a solder resist coating machine for printed circuit boards, in which the operator can directly place the circuit board substrate on the friction conveyor roller without worrying about whether the substrate is placed horizontally, thus ensuring the quality of the substrate and allowing the operator to relax and reduce their labor intensity.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a solder resist coating machine for printed circuit boards, comprising coating equipment and a support table;

[0005] A support platform is provided on one side of the coating equipment. A support frame is installed above the support platform. A pretreatment mechanism for processing circuit boards is installed inside the support frame. Multiple sets of guide rollers that are rotatably connected to the support frame are provided below the pretreatment mechanism.

[0006] Furthermore, the pretreatment mechanism includes a treatment frame that is fixedly connected to the support frame, an air suction device is installed on one side of the inside of the treatment frame, the output end of the air suction device contacts a filter mechanism, and the outer side of the filter mechanism is slidably connected to the treatment frame.

[0007] The processing frame has a connecting pipe inside. One side of the connecting pipe is in contact with the filter mechanism, and the other end of the connecting pipe is connected to a hollow frame. The bottom of the hollow frame is connected to evenly distributed air intake nozzles.

[0008] The support platform is also equipped with a corner collision prevention mechanism.

[0009] The corner collision prevention mechanism includes multiple support legs that are fixedly connected to the support platform. A horizontally placed placement plate is fixedly connected above the support legs. Vertically arranged parallel baffles are fixedly connected to both sides above the placement plate. Multiple drive devices are fixedly connected to the outer side of one of the baffles. Friction conveying rollers are fixedly connected to the rotating ends of the drive devices. The other end of the friction conveying rollers is rotatably connected to the baffle.

[0010] Furthermore, when placing the circuit board substrate, the operator can directly place the circuit board substrate on the friction conveying roller. The length of the circuit board substrate is greater than the anti-corner collision mechanism, and the traveling end of the substrate protrudes from one side relative to the anti-corner collision mechanism. In this case, there will be no collision with the rotating roller when the substrate is placed at an angle. Multiple friction conveying rollers can ensure stable horizontal conveying of the substrate in the early stage and ensure the quality of the substrate.

[0011] Before manufacturing, the circuit board substrates are placed together inside a vertical frame. This is not a dust-free environment, and they are still manually handled and processed when transported to the coating area. During coating, the substrates are taken out from the placement frame and then manually fed into the coating equipment. Because the circuit boards are stacked together and left to stand for a period of time before coating, dust or other impurities may adhere to their surfaces. If these are not pre-treated, the coating quality may be affected. When in use, the power is turned on, and the circuit boards are conveyed above the guide rollers by a support frame, pre-treatment mechanism, and guide rollers on one side of the coating equipment. During the conveying process, the suction equipment is activated, and the dust and impurities on the surface of the circuit boards are easily drawn into the hollow frame, connecting pipe, and filter mechanism through the suction nozzle, facilitating the cleaning of the circuit board coating lines and ensuring coating quality.

[0012] Furthermore, a motor is installed inside the processing frame, and a reciprocating lead screw is fixedly connected to the end of the motor's main shaft. A slider is slidably connected to the outside of the reciprocating lead screw, a movable sleeve is fixedly connected to the outside of the slider, and a connecting plate is fixedly connected to the outside of the movable sleeve. The bottom of the connecting plate is fixedly connected to the hollow frame.

[0013] Furthermore, the outer side of the connecting plate is slidably connected to the processing frame.

[0014] During cleaning, the motor drives the reciprocating screw to rotate, which in turn drives the slider to move back and forth. The slider then drives the moving sleeve and connecting plate to move back and forth within a small range. This allows the hollow frame to move back and forth, thereby moving the suction nozzle back and forth to ensure that the circuit board surface is thoroughly cleaned.

[0015] Furthermore, the filtration mechanism includes a sliding frame that is slidably connected to the processing frame. The top of the sliding frame has a docking hole, the interior of the sliding frame is connected to a vent pipe, and an inclined filter screen is installed inside the sliding frame.

[0016] Furthermore, the inclined filter screen is set at an angle.

[0017] Furthermore, a sealing ring is embedded on the outer side of the sliding frame.

[0018] The sliding frame is equipped with an inclined filter screen, which can filter dust and impurities. By sliding the frame, impurities can be easily collected and processed.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. When placing the circuit board substrate, the operator can directly place the circuit board substrate on the friction conveyor roller without worrying about whether the substrate is placed horizontally. The length of the circuit board substrate is greater than the anti-corner collision mechanism, and the traveling end of the substrate protrudes from one side relative to the anti-corner collision mechanism. At this time, there will be no situation where the substrate collides with its rotating roller when it is placed at an angle. Multiple friction conveyor rollers can ensure stable horizontal conveying of the substrate in the early stage, ensure the quality of the substrate, and keep the operator relaxed.

[0021] 2. By setting a support frame, pretreatment mechanism and guide roller on one side of the coating equipment, the circuit board is conveyed above the guide roller. During the conveying process, the suction equipment is started, and the dust and impurities on the surface of the circuit board can easily enter the hollow frame, connecting pipe and filter mechanism through the suction nozzle, which facilitates the cleaning of the circuit board coating line and ensures the coating quality.

[0022] 3. During cleaning, the motor drives the reciprocating screw to rotate, which in turn drives the slider to move back and forth. The slider then drives the moving sleeve and connecting plate to move back and forth within a small range. This allows the hollow frame to move back and forth, thereby moving the suction nozzle back and forth to ensure that the circuit board surface is thoroughly treated.

[0023] The sliding frame is equipped with an inclined filter screen, which can filter dust and impurities. By sliding the frame, impurities can be easily collected and processed. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the pretreatment mechanism of this utility model;

[0026] Figure 3 This is a schematic diagram of the filter mechanism structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the anti-corner collision mechanism of this utility model;

[0028] Legend: 1. Coating equipment; 2. Support platform; 3. Support frame; 4. Pretreatment mechanism; 401. Treatment frame; 402. Motor; 403. Reciprocating screw; 404. Slider; 405. Moving sleeve; 406. Connecting plate; 407. Hollow frame; 408. Air suction device; 409. Filtering mechanism; 4091. Sliding frame; 4092. Vent pipe; 4093. Inclined filter screen; 4094. Docking hole; 4095. Sealing ring; 410. Connecting pipe; 411. Air suction nozzle; 5. Guide roller; 6. Anti-corner collision mechanism; 601. Support leg; 602. Placement plate; 603. Baffle; 604. Drive device; 605. Friction conveying roller. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Example

[0030] A printed circuit board solder resist coating machine, such as Figure 1-3 As shown, it includes a coating device 1 and a support table 2;

[0031] A support platform 2 is provided on one side of the coating equipment 1. A support frame 3 is installed above the support platform 2. A pretreatment mechanism 4 for processing the circuit board is installed inside the support frame 3. Multiple sets of guide rollers 5 are rotatably connected to the support frame 3 below the pretreatment mechanism 4.

[0032] The support platform 2 is also equipped with a corner collision prevention mechanism 6.

[0033] The corner-avoidance collision mechanism 6 includes multiple support legs 601 fixedly connected to the support platform 2. A horizontally placed placement plate 602 is fixedly connected above the support legs 601. Vertically arranged parallel baffles 603 are fixedly connected to both sides above the placement plate 602. Multiple drive devices 604 are fixedly connected to the outer side of one of the baffles 603. Friction conveying rollers 605 are fixedly connected to the rotating ends of the drive devices 604. The other end of the friction conveying rollers 605 is rotatably connected to the baffles 603. The drive devices 604 use motors to drive the friction conveying rollers 605 to rotate. The guide rollers 5 are driven by motors. The motor on one side of the guide rollers 5 is not shown in the figure.

[0034] During circuit board coating, the circuit boards are concentrated on one side. The circuit board substrates are manually removed and placed on a conveying mechanism, which typically uses multiple rotating rollers. The inventors discovered during actual operation that manually placing the circuit boards on these rollers requires careful handling and horizontal placement. Otherwise, the sides or corners of the circuit board substrates may collide directly with the rollers, potentially damaging them. Furthermore, manually placing each board carefully is extremely laborious, making this simple task very tiring. To address this, the inventors can directly place the circuit board substrates on the friction conveying rollers 605. The length of the circuit board substrate is greater than the anti-corner collision mechanism 6, and the traveling end of the substrate protrudes from one side of the anti-corner collision mechanism 6. This prevents collisions with the rotating rollers when the substrate is tilted. The multiple friction conveying rollers 605 ensure stable horizontal transport of the substrates in the early stages, guaranteeing substrate quality.

[0035] The pretreatment mechanism 4 includes a treatment frame 401 that is fixedly connected to the support frame 3. An air suction device 408 is installed on one side of the inside of the treatment frame 401. The output end of the air suction device 408 contacts a filter mechanism 409. The outer side of the filter mechanism 409 is slidably connected to the treatment frame 401.

[0036] The processing frame 401 is connected to a connecting pipe 410. One side of the connecting pipe 410 is in contact with the filter mechanism 409, and the other end of the connecting pipe 410 is connected to a hollow frame 407. The bottom of the hollow frame 407 is connected to evenly distributed air intake nozzles 411.

[0037] When coating circuit boards, they are usually placed on one side. During coating, they are taken out from the placement frame and then manually fed into the coating equipment for processing. However, since the circuit boards are stacked together and left to stand for a period of time before coating, dust or other impurities may adhere to their surfaces. If they are not treated in advance, the coating quality may be affected. When in use, the power is turned on, and the circuit boards are conveyed above the guide roller 5 through the support frame 3, pretreatment mechanism 4 and guide roller 5 set on one side of the coating equipment 1. During the conveying process, the suction device 408 is started, and the dust and impurities on the surface of the circuit boards can easily enter the hollow frame 407, connecting pipe 410 and filter mechanism 409 through the suction nozzle 411, which facilitates the cleaning of the circuit board coating lines and ensures the coating quality.

[0038] Multiple suction nozzles 411 ensure large-area treatment of the circuit board surface, the connecting tube 410 is made of flexible rubber, which ensures that it moves with the hollow frame 407, and the guide roller 5 serves to guide and transport the circuit board.

[0039] A motor 402 is installed inside the processing frame 401. A reciprocating lead screw 403 is fixedly connected to the end of the main shaft of the motor 402. A slider 404 is slidably connected to the outside of the reciprocating lead screw 403. A movable sleeve 405 is fixedly connected to the outside of the slider 404. A connecting plate 406 is fixedly connected to the outside of the movable sleeve 405. The bottom of the connecting plate 406 is fixedly connected to the hollow frame 407.

[0040] The outer side of the connecting plate 406 is slidably connected to the processing frame 401.

[0041] During cleaning, the motor 402 drives the reciprocating screw 403 to rotate, the reciprocating screw 403 drives the slider 404 to move back and forth, the slider 404 drives the moving sleeve 405 and the connecting plate 406 to move back and forth in a small range, at which time the hollow frame 407 can move back and forth, thereby causing the air suction nozzle 411 to move back and forth, ensuring that the surface of the circuit board is fully treated.

[0042] The outer side of the connecting plate 406 slides against the processing frame 401, which prevents the moving sleeve 405 from rotating.

[0043] The filtration mechanism 409 includes a sliding frame 4091 that is slidably connected to the processing frame 401. The top of the sliding frame 4091 is provided with a docking hole 4094. The interior of the sliding frame 4091 is connected to a vent pipe 4092. An inclined filter screen 4093 is installed inside the sliding frame 4091.

[0044] The inclined filter screen 4093 is set at an angle.

[0045] A sealing ring 4095 is embedded on the outer side of the sliding frame 4091.

[0046] The sliding frame 4091 is equipped with an inclined filter screen 4093, which can filter dust and impurities. By sliding the sliding frame 4091, it can be ensured that impurities are easily collected and processed.

[0047] The input end of the suction device 408 is aligned with the docking hole 4094 to prevent gas leakage, while one end of the connecting pipe 410 is aligned with the bottom of the vent pipe 4092 to ensure that gas enters the sliding frame 4091. The inclined filter screen 4093 is close to the docking hole 4094, so that when dust enters the sliding frame 4091, it is not easy to flow back through the vent pipe 4092. At the same time, the vent pipe 4092 is convex, which can effectively prevent dust from entering it. The sealing ring 4095 is set to make tight contact with the processing frame 401 to prevent gas leakage. One side of the sealing ring 4092 is inclined, which can ensure stable insertion into the processing frame 401.

[0048] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A solder resist coating machine for printed circuit boards, characterized in that: Includes coating equipment (1) and support table (2); A support platform (2) is provided on one side of the coating equipment (1), and a support frame (3) is installed above the support platform (2). A pretreatment mechanism (4) for processing the circuit board is installed inside the support frame (3). Multiple sets of guide rollers (5) are rotatably connected to the support frame (3) below the pretreatment mechanism (4). The support platform (2) is also equipped with a corner collision prevention mechanism (6).

2. The printed circuit board solder resist coating machine according to claim 1, characterized in that: The pretreatment mechanism (4) includes a treatment frame (401) fixedly connected to the support frame (3). An air suction device (408) is installed on one side of the inside of the treatment frame (401). The output end of the air suction device (408) contacts a filter mechanism (409). The outer side of the filter mechanism (409) is slidably connected to the treatment frame (401). The processing frame (401) is connected to a connecting pipe (410). One side of the connecting pipe (410) is in contact with the filter mechanism (409). The other end of the connecting pipe (410) is connected to a hollow frame (407). The bottom of the hollow frame (407) is connected to evenly distributed air intake nozzles (411).

3. The printed circuit board solder resist coating machine according to claim 2, characterized in that: A motor (402) is installed inside the processing frame (401). A reciprocating lead screw (403) is fixedly connected to the end of the main shaft of the motor (402). A slider (404) is slidably connected to the outside of the reciprocating lead screw (403). A movable sleeve (405) is fixedly connected to the outside of the slider (404). A connecting plate (406) is fixedly connected to the outside of the movable sleeve (405). The bottom of the connecting plate (406) is fixedly connected to the hollow frame (407).

4. A printed circuit board solder resist coating machine according to claim 3, characterized in that: The outer side of the connecting plate (406) is slidably connected to the processing frame (401).

5. A printed circuit board solder resist coating machine according to claim 2, characterized in that: The filtration mechanism (409) includes a sliding frame (4091) that is slidably connected to the processing frame (401). The top of the sliding frame (4091) is provided with a docking hole (4094). The interior of the sliding frame (4091) is connected to a vent pipe (4092). An inclined filter screen (4093) is installed inside the sliding frame (4091).

6. A printed circuit board solder resist coating machine according to claim 5, characterized in that: The inclined filter (4093) is set at an angle.

7. A printed circuit board solder resist coating machine according to claim 5, characterized in that: A sealing ring (4095) is embedded on the outside of the sliding frame (4091).

8. A printed circuit board solder resist coating machine according to claim 1, characterized in that: The corner collision prevention mechanism (6) includes multiple support legs (601) fixedly connected to the support platform (2). A horizontally placed placement plate (602) is fixedly connected above the support legs (601). Vertically arranged parallel baffles (603) are fixedly connected on both sides above the placement plate (602). Multiple drive devices (604) are fixedly connected to the outside of one of the baffles (603). Friction conveying rollers (605) are fixedly connected to the rotating ends of the drive devices (604). The other end of the friction conveying rollers (605) is rotatably connected to the baffles (603).

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