A spraying device for circuit board processing

Abstract

This utility model relates to the field of circuit board processing technology and discloses a spraying device for circuit board processing, including two adjusting plates. A drive shaft is rotatably connected to one side of each of the front and rear ends of the two adjusting plates, and a sliding groove is provided on one side of each adjusting plate. This spraying device for circuit board processing, through the cooperation of a bidirectional screw adjustment mechanism and an elastic clamping assembly, can flexibly adjust the distance between the two belts according to the width of circuit boards of different specifications. The elastic clamps in the clamping assembly automatically adapt to the thickness differences of the circuit boards under the action of compression springs, achieving multi-specification compatibility while allowing the disassembly of already sprayed boards and the installation of new boards to be completed while the belts are continuously running, forming a continuous loading and unloading operation, significantly improving processing efficiency. Through the linkage control of an electromagnetic adsorption flipping mechanism and a photoelectric switch, when the clamping assembly reaches the spraying station and finishes spraying one side, it can automatically trigger a 180° flipping action to achieve automated cyclic operation of double-sided spraying.

Description

Technical Field

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

[0002] Conformal coating is a specially formulated paint used to protect circuit boards and related equipment from environmental corrosion, thereby improving and extending their service life and ensuring safety and reliability in use.

[0003] An existing patent (publication number: CN213078871U) discloses a spraying device for circuit board processing, belonging to the field of circuit board processing technology. It includes a base, with two support plates fixedly connected to the upper surface of the base. A single spraying machine body is fixedly connected to the opposing surfaces of the two support plates. Two first grooves are formed on the opposing surfaces of the two support plates. A first bearing is disposed within each of the first grooves, and a first rotating shaft is sleeved within the first bearing. A transmission wheel is engaged with the outer surface of the first rotating shaft. The two transmission wheels on the right side are connected by a common conveyor belt. This spraying device for circuit board processing, by incorporating through holes, slots, baffles, a handle, a motor, transmission wheels, a conveyor belt, and locking blocks, can reduce the time spent picking up and placing circuit boards while completing double-sided spraying of circuit boards, thus reducing the workload of workers to a certain extent and ensuring the device's working efficiency to a certain degree.

[0004] The above-mentioned device reduces the time spent picking up and putting down the circuit board while completing the double-sided spraying of the circuit board, which can reduce the workload of the staff to a certain extent and ensure the working efficiency of the device to a certain extent. However, after the painting is finished, the paint is not completely cured, and it is easy to accidentally touch the paint surface during the material feeding process, resulting in defects in the painted area. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a spraying device for circuit board processing, which has the advantages of continuous spraying and fast curing speed, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a spraying device for circuit board processing, comprising two adjusting plates, each adjusting plate having a drive shaft rotatably connected to one side of its front and rear ends, each adjusting plate having a groove on one side, each drive shaft having a pulley fixedly connected to one end, belts being provided between the two leftmost pulleys and between the two rightmost pulleys, the two sets of pulleys being connected by belts close to them, and a power source being installed on one side of each adjusting plate, the output end of each power source being fixedly connected to the drive shaft close to it.

[0007] Each belt surface is provided with a set of clamping components for fixing the circuit board;

[0008] An adjustment mechanism for adjusting the distance between the two adjustment plates is provided below the two adjustment plates;

[0009] A sprayer is installed above the middle of the two adjustment plates.

[0010] Furthermore, each of the clamping components includes a bearing seat, each bearing seat is fixedly connected to a belt adjacent to it, and a rotating rod is rotatably connected inside each bearing seat via a damping shaft. Each rotating rod is slidably connected to a groove adjacent to it. A pressure frame is fixedly connected to one end of each rotating rod, a pressure block is slidably inserted inside each pressure frame, a compression spring is installed between each pressure block and its adjacent pressure frame, a set of elastic clips is fixedly connected to one side of each pressure block, each elastic clip is integrally formed from elastic steel, an insert is slidably inserted to the other end of each rotating rod, a spring is installed between each insert and its adjacent rotating rod, and a metal disc is fixedly connected to one end of each insert.

[0011] The above solution, through the setting of elastic clips, can achieve the purpose of clamping the circuit board.

[0012] Furthermore, a U-shaped frame is fixedly connected to one side of each of the two adjustment plates, a power shaft is rotatably connected to one side of each U-shaped frame, an electromagnet is fixedly installed at one end of each power shaft, a motor is installed on one side of each U-shaped frame, and the output end of each motor is fixedly connected to the power shaft adjacent to it.

[0013] With the above scheme, by setting up an electromagnet, when the clamping component reaches the position of the electromagnet, the electromagnet is activated to attract the metal disk, the motor rotates and drives the clamping component to rotate, thereby driving the circuit board to flip over, realizing the spraying work on the other side of the circuit board.

[0014] Furthermore, photoelectric switches are installed on the inner bottom walls of both U-shaped frames.

[0015] With the above solution, by setting the photoelectric switch, when the clamping component moves above the photoelectric switch, it can drive the spraying machine to spray. After the spraying is completed, the motor can drive the circuit board to flip over.

[0016] Furthermore, the adjustment mechanism includes three mounting frames. Guide rods are fixedly connected between the left and right inner walls of the rearmost and frontmost mounting frames. Two adjustment plates are slidably sleeved with the guide rods adjacent to them. A bidirectional lead screw is rotatably connected between the left and right inner walls of the middle mounting frame. Two adjustment plates are threaded to both ends of the bidirectional lead screw. A motor is mounted on one side of the middle mounting frame, and the output end of the motor is fixedly connected to one end of the bidirectional lead screw.

[0017] The above scheme, through the setting of the bidirectional lead screw and the adjusting plate, allows the two adjusting plates to move closer or further apart.

[0018] Furthermore, a connecting plate is installed between every two adjacent mounting frames, and a set of fans is installed on the upper surface of each connecting plate.

[0019] The above solution, through the installation of a fan, can increase the curing speed of the protective coating, thereby improving production efficiency.

[0020] Furthermore, a set of support wheels is rotatably connected to one side of each of the adjustment plates, and the outer surface of each support wheel is in contact with the inner wall of the belt adjacent to it.

[0021] The above solution, through the setting of support wheels, can achieve the purpose of supporting the belt, preventing the belt from collapsing, and ensuring the stability of circuit board transportation.

[0022] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0023] This spraying device for circuit board processing, through the cooperation of a bidirectional screw adjustment mechanism and an elastic clamping assembly, can flexibly adjust the distance between the two belts according to the width of circuit boards of different specifications. The elastic clips in the clamping assembly automatically adapt to the thickness difference of the circuit boards under the action of the compression spring, achieving multi-specification compatibility while allowing the disassembly of already sprayed boards and the installation of new boards to be completed while the belt is running continuously, forming a continuous loading and unloading operation, which significantly improves processing efficiency. Through the linkage control of the electromagnetic adsorption flipping mechanism and photoelectric switch, when the clamping assembly reaches the spraying station and finishes spraying one side, it can automatically trigger a 180° flipping action to realize the automated cyclic operation of double-sided spraying. The axial flow fan unit arranged along the conveyor line forms a directional airflow channel to improve the curing speed of the paint surface. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this application. Figure 1 ;

[0025] Figure 2 This is a top view of the overall structure of this application;

[0026] Figure 3This is a three-dimensional structural diagram of the adjustment plate in this application;

[0027] Figure 4 This is a side view of the adjustment plate structure of this application;

[0028] Figure 5 This is a structural diagram of the clamping assembly and U-shaped frame of this application.

[0029] In the picture:

[0030] 1. Adjusting plate; 2. Drive shaft; 3. Slide groove; 4. Pulley; 5. Belt; 6. Power source;

[0031] 7. Clamping assembly; 701. Shaft seat; 702. Rotating rod; 703. Pressure frame; 704. Pressure block; 705. Compression spring; 706. Elastic clamping piece; 707. Insertion block; 708. Spring; 709. Metal disc;

[0032] 8. Adjustment mechanism; 801. Mounting frame; 802. Guide rod; 803. Double-acting lead screw; 804. Motor;

[0033] 9. Spray painting machine; 10. U-shaped frame; 11. Power shaft; 12. Electromagnet; 13. Motor; 14. Photoelectric switch; 15. Connecting plate; 16. Fan; 17. Support wheel. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a spraying device for circuit board processing includes two adjusting plates 1. One side of each of the front and rear ends of the two adjusting plates 1 is rotatably connected to a drive shaft 2. One side of each adjusting plate 1 is provided with a sliding groove 3. One end of each drive shaft 2 is fixedly connected to a pulley 4. A belt 5 is provided between the two leftmost pulleys 4 and between the two rightmost pulleys 4. The two sets of pulleys 4 are respectively connected by a belt 5 close to them. One side of each of the two adjusting plates 1 is equipped with a power source 6. The output end of each power source 6 is fixedly connected to the drive shaft 2 close to it.

[0036] Please see Figure 1 , Figure 3 and Figure 5Each belt 5 has a set of clamping components 7 for fixing the circuit board on its surface. The belt 5 and clamping components 7 enable the circuit board to move. Each clamping component 7 includes a bearing 701, which is fixedly connected to the belt 5 adjacent to it. A rotating rod 702 is rotatably connected inside each bearing 701 via a damping shaft. Each rotating rod 702 is slidably connected to a sliding groove 3 adjacent to it. A pressure frame 703 is fixedly connected to one end of each rotating rod 702, and a sliding insert is located inside each pressure frame 703. There is a pressure block 704, and a compression spring 705 is installed between each pressure block 704 and the pressure frame 703 adjacent to it. A set of elastic clips 706 are fixedly connected to one side of each pressure block 704. Each elastic clip 706 is integrally formed of elastic steel. An insert block 707 is slidably inserted into the other end of each rotating rod 702. A spring 708 is installed between each insert block 707 and the rotating rod 702 adjacent to it. A metal disc 709 is fixedly connected to one end of each insert block 707. The purpose of clamping the circuit board can be achieved by setting the elastic clips 706.

[0037] Please see Figure 1 , Figure 4 and Figure 5 Each of the two adjusting plates 1 has a U-shaped frame 10 fixedly connected to one side. Each U-shaped frame 10 has a power shaft 11 rotatably connected to one side. Each power shaft 11 has an electromagnet 12 fixedly installed at one end. Each U-shaped frame 10 has a motor 13 installed on one side. The output end of each motor 13 is fixedly connected to the power shaft 11 that is close to it. With the setting of the electromagnet 12, when the clamping component 7 reaches the position of the electromagnet 12, the electromagnet 12 starts to attract the metal disk 709. The motor 13 rotates and drives the clamping component 7 to rotate, thereby driving the circuit board to flip over, so as to realize the spraying work on the other side of the circuit board.

[0038] Please see Figure 1 , Figure 2 and Figure 3Below the two adjusting plates 1, there is an adjusting mechanism 8 for adjusting the distance between the two adjusting plates 1. The adjusting mechanism 8 can adjust the distance between the two belts 5, thus facilitating the conveying of circuit boards of different sizes. The adjusting mechanism 8 includes three mounting frames 801. The left and right inner walls of the rearmost and frontmost mounting frames 801 are fixedly connected to guide rods 802. The two adjusting plates 1 are slidably sleeved with the guide rods 802 that are close to them. The left and right inner walls of the middle mounting frame 801 are rotatably connected to a double-acting screw 803. The two adjusting plates 1 are respectively threaded to both ends of the double-acting screw 803. A motor 804 is mounted on one side of the middle mounting frame 801. The output end of the motor 804 is fixedly connected to one end of the double-acting screw 803. Through the arrangement of the double-acting screw 803 and the adjusting plates 1, the two adjusting plates 1 can be moved closer or further apart.

[0039] Please see Figure 1 , Figure 2 and Figure 5 A sprayer 9 is installed above the middle of the two adjusting plates 1. The sprayer 9 enables automatic spraying of the circuit board. Photoelectric switches 14 are installed on the inner bottom walls of the two U-shaped frames 10. When the clamping component 7 moves above the photoelectric switch 14, the sprayer 9 is driven to spray. After spraying, the motor 13 drives the circuit board to flip over. A connecting plate 15 is installed between every two adjacent mounting frames 801. A set of fans 16 is installed on the upper surface of each connecting plate 15. The fans 16 improve the curing speed of the protective paint, thereby improving production efficiency. A set of support wheels 17 is rotatably connected to one side of each adjusting plate 1. The outer surface of each support wheel 17 contacts the inner wall of the belt 5 adjacent to it. The support wheels 17 support the belt 5, prevent the belt 5 from collapsing, and ensure the stability of the circuit board conveying.

[0040] In this embodiment, a spraying device for circuit board processing, through the cooperation of a bidirectional lead screw 803 adjusting mechanism 8 and an elastic clamping assembly 7, can flexibly adjust the spacing between the two belts 5 according to the width of different specifications of circuit boards. The elastic clamping piece 706 in the clamping assembly 7 automatically adapts to the thickness difference of the circuit board under the action of the compression spring 705, achieving multi-specification compatibility while allowing the disassembly of the already sprayed board and the installation of the new board to be completed while the belt 5 is running continuously, forming a continuous loading and unloading operation, which significantly improves processing efficiency. Through the linkage control of the electromagnetic adsorption flipping mechanism and the photoelectric switch 14, when the clamping assembly 7 reaches the spraying station and finishes spraying one side, it can automatically trigger a 180° flipping action to realize the automated cyclic operation of double-sided spraying. The axial flow fans 16 arranged along the conveyor line form a directional airflow channel to improve the curing speed of the paint surface.

[0041] The working principle of the above embodiment is as follows: The motor 804 of the start adjustment mechanism 8 drives the bidirectional lead screw 803 to rotate, which drives the two adjustment plates 1 to move synchronously in opposite directions along the guide rod 802. This is suitable for circuit boards of different sizes. The operator inserts the circuit board to be sprayed into the corresponding station of the belts 5 on both sides. When the edge of the circuit board contacts the elastic clamp 706 of the clamping assembly 7, the top and bottom of the edge of the circuit board are held by the material properties of the elastic clamp 706. The pressure block 704 generates elastic deformation under the action of the compression spring 705, which clamps the two sides of the circuit board. The power source 6 drives the transmission shaft 2 to drive the pulley 4 to rotate synchronously. When the clamping assembly 7 moves the circuit board to the spraying station, the photoelectric switch 14 in the U-shaped frame 10 detects the clamping assembly 7 and triggers the spraying machine 9 to start. The spray head evenly sprays the circuit board surface along a predetermined trajectory. After the spraying is completed, the electromagnet 12 is energized to generate magnetic force to attract the metal disk 709. At the same time, the motor 13 drives the power shaft 11 to rotate 180°. During this process, the insert block 707 can rotate the rotating rod 702 to flip the circuit board. The flipped circuit board enters the secondary spraying. The sprayed circuit board continues to be conveyed. Multiple sets of fans 16 on the mounting frame 801 are started, and the constant temperature airflow quickly dries the paint surface. When the first circuit board enters the curing stage, the clamping component 7 of the subsequent station has already carried the new circuit board to the spraying position, forming a continuous production cycle. The operator can remove the cured circuit board at the end station and clamp the new board at the front station, realizing seamless connection of the whole process.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spraying device for circuit board processing, comprising two adjusting plates (1), characterized in that: The front and rear ends of the two adjustment plates (1) are rotatably connected to a drive shaft (2). Each adjustment plate (1) has a sliding groove (3) on one side. Each drive shaft (2) is fixedly connected to a pulley (4). A belt (5) is provided between the two leftmost pulleys (4) and between the two rightmost pulleys (4). The two sets of pulleys (4) are connected by a drive belt (5) close to them. A power source (6) is installed on one side of each adjustment plate (1). The output end of each power source (6) is fixedly connected to the drive shaft (2) close to it. Each belt (5) has a set of clamping components (7) for fixing the circuit board on its surface; An adjustment mechanism (8) for adjusting the distance between the two adjustment plates (1) is provided below the two adjustment plates (1); A sprayer (9) is installed above the middle of the two adjusting plates (1).

2. The spraying device for circuit board processing according to claim 1, characterized in that: Each clamping assembly (7) includes a bearing seat (701), each bearing seat (701) being fixedly connected to a belt (5) adjacent to it. A rotating rod (702) is rotatably connected inside each bearing seat (701) via a damping shaft. Each rotating rod (702) is slidably connected to a groove (3) adjacent to it. A pressure frame (703) is fixedly connected to one end of each rotating rod (702). A pressure block (704) is slidably inserted inside each pressure frame (703). Each pressure block (704)... A compression spring (705) is installed between each pressure block (704) and the pressure frame (703) adjacent to it. A set of elastic clips (706) is fixedly connected to one side of each pressure block (704). Each elastic clip (706) is integrally formed from elastic steel. A plug (707) is slidably inserted into the other end of each rotating rod (702). A spring (708) is installed between each plug (707) and the rotating rod (702) adjacent to it. A metal disc (709) is fixedly connected to one end of each plug (707).

3. The spraying device for circuit board processing according to claim 1, characterized in that: Each of the two adjustment plates (1) has a U-shaped frame (10) fixedly connected to one side, and a power shaft (11) is rotatably connected to one side of each U-shaped frame (10). An electromagnet (12) is fixedly installed at one end of each power shaft (11), and a motor (13) is installed on one side of each U-shaped frame (10). The output end of each motor (13) is fixedly connected to the power shaft (11) that is close to it.

4. The spraying device for circuit board processing according to claim 3, characterized in that: Photoelectric switches (14) are installed on the inner bottom walls of both U-shaped frames (10).

5. A spraying device for circuit board processing according to claim 1, characterized in that: The adjustment mechanism (8) includes three mounting frames (801). Guide rods (802) are fixedly connected between the left and right inner walls of the rearmost and frontmost mounting frames (801). Two adjustment plates (1) are slidably sleeved with the guide rods (802) that are close to them. A double-acting screw (803) is rotatably connected between the left and right inner walls of the middle mounting frame (801). The two adjustment plates (1) are threaded to both ends of the double-acting screw (803). A motor (804) is installed on one side of the middle mounting frame (801). The output end of the motor (804) is fixedly connected to one end of the double-acting screw (803).

6. A spraying apparatus for circuit board processing according to claim 5, characterized in that: A connecting plate (15) is installed between every two adjacent mounting frames (801), and a set of fans (16) is installed on the upper surface of each connecting plate (15).

7. A spraying device for circuit board processing according to claim 1, characterized in that: Each of the adjustment plates (1) has a set of support wheels (17) rotatably connected to one side, and the outer surface of each support wheel (17) is in contact with the inner wall of the belt (5) adjacent to it.

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