Spraying device for circuit board production

Abstract

The utility model belongs to the technical field of circuit board production, and particularly relates to a spraying device for circuit board production, which comprises a base, a shell, a spraying assembly, two first electric sliding rails, a second electric sliding rail, an electric sliding block, a screw rod and the like, the second electric sliding rail is connected between the two first electric sliding rails in a sliding mode, the electric sliding block is connected to the second electric sliding rail in a sliding mode, the spraying assembly is arranged at the bottom end of the electric sliding block, and the screw rod rotates on the lower portion in the shell. By introducing the drying and air suction assembly, the coating on one surface of the circuit board can be quickly and uniformly dried, and the coating is ensured to reach a certain curing degree before being overturned, so that the flowing phenomenon of the coating is avoided, and the attractiveness and the quality of a final product are ensured; harmful gas emitted by the coating is absorbed, and environmental pollution is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board manufacturing technology, and in particular relates to a spraying device for circuit board manufacturing. Background Technology

[0002] A circuit board is a common carrier for electronic components, used to connect and fix various electronic components, and to realize functions such as signal transmission, power distribution, and power transfer in circuits. A circuit board mainly consists of a substrate, conductive layers, printed circuits, and electronic components. Spray coating is an indispensable part of the circuit board production process. Through spray coating, the circuit board can be protected, its insulation performance and aesthetics improved, and its anti-interference ability enhanced. Because both sides of the circuit board need to be coated evenly and precisely, the circuit board needs to be flipped during the spray coating process.

[0003] Traditional automatic circuit board spraying devices can flip circuit boards and spray them on both sides, but during the flipping process, the paint on one side of the circuit board that is not yet dry may run, which will not only damage the sprayed coating, but also cause uneven coating thickness and ultimately affect product quality.

[0004] Therefore, there is a particular need for a spraying device for circuit board production to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of traditional automatic circuit board spraying devices, which easily cause paint to flow during the flipping process, affecting the coating quality and uniformity, this utility model provides a spraying device for circuit board production.

[0006] This utility model is achieved through the following technical means: a spraying device for circuit board production, comprising a base, a housing, a spraying component, a first electric slide rail, a second electric slide rail, an electric slider, a screw, a placement plate, a controller, a first motor, and a flipping component. The housing is fixed to the top of the base. Two first electric slide rails are distributed left and right and installed in the upper part of the housing. The second electric slide rail is slidably connected between the two first electric slide rails. The electric slider is slidably connected to the second electric slide rail. The spraying component is located at the bottom end of the electric slider. The screw rotates in the lower part of the housing. The placement plate is threaded to the outside of the screw. The controller is installed at the lower front left side of the housing. The spraying component, the first electric slide rail, the second electric slide rail, and the electric slider are all electrically connected to the controller. The first motor is installed at the center of the lower front side of the housing, with its output shaft facing rearward. It is fixedly connected to the front end of the screw through a coupling. The first motor is electrically connected to the controller. The flipping component for flipping the circuit board is located on the housing. The device also includes a drying and suction component for drying the circuit board and absorbing harmful gases, which is located on the housing.

[0007] Furthermore, the flipping assembly includes a fixed frame, a second electric push rod, a connecting plate, a second motor, a support frame, a third electric push rod, a connecting frame, a rotating plate, and a clamping plate. The fixed frame is fixed to the front of the top of the housing. Two second electric push rods are symmetrically distributed, embedded in the fixed frame, and electrically connected to the controller. The telescopic end of each second electric push rod faces downward. The connecting plate is fixed between the telescopic ends of the two second electric push rods. Two second motors electrically connected to the controller are symmetrically arranged and embedded in the lower part of the connecting plate, with their output shafts facing inward. Each support frame is fixed to the output shaft of each second motor. Each third electric push rod electrically connected to the controller is mounted on each support frame, with its telescopic end facing outward. Each connecting frame is fixed to the telescopic end of each third electric push rod. Every four rotating plates on the same side form a group and are rotatably connected to each connecting frame. Each clamping plate is rotatably connected to each rotating plate and slidably connected to the corresponding support frame. Four clamping plates on the same side form a group.

[0008] Furthermore, the drying and suction assembly includes an infrared emitter, a mounting plate, a guide rod, a first electric push rod, a suction pipe, and a suction pump. The first electric push rod is mounted on the rear of the housing, with its telescopic end facing right. The mounting plate is fixed to the telescopic end of the first electric push rod. The infrared emitter is mounted on the mounting plate, with its leftmost end passing through the housing and slidingly engaging with it. The guide rod is fixed to the right side of the housing, and the mounting plate slides with the guide rod. The n-shaped suction pipe is fixed to the lower part of the housing. The suction pump is mounted on the rear of the housing and located below the first electric push rod. The suction pump's delivery end faces right, while its suction end faces upward and connects to the suction pipe. The infrared emitter, the first electric push rod, and the suction pump are all electrically connected to the controller.

[0009] Furthermore, it also includes limit rods, springs, and buffer plates. Each pair of limit rods is symmetrically distributed and slidably connected to each clamping plate. Each buffer plate is fixed between each pair of limit rods and located on one side of the corresponding clamping plate. Each spring is sleeved on the outside of each limit rod, and its two ends are fixedly connected to the corresponding clamping plate and the corresponding buffer plate, respectively.

[0010] Furthermore, it also includes limiting plates, with each pair of horizontally aligned limiting plates forming a group. The larger group of limiting plates is fixed to the lower rear side of the housing, while the smaller group of limiting plates is fixed to the lower front side of the housing. The placement plate is located in front of one group of limiting plates and between the other group of limiting plates.

[0011] Furthermore, the placement plate has four openings for accommodating the clamps to pass through.

[0012] Furthermore, each buffer plate has a protective pad on the side away from the corresponding clamping plate. Beneficial effects

[0013] By introducing drying and suction components, the coating on one side of the circuit board can be dried quickly and evenly, ensuring that the coating has reached a certain degree of curing before flipping, thereby avoiding coating dripping and ensuring the aesthetics and quality of the final product. At the same time, the suction components play an auxiliary role in the drying process, removing harmful gases emitted by the coating and avoiding environmental pollution.

[0014] The design of the limit rod, spring and buffer plate not only improves the stability and clamping force of the clamping plate, but also plays a buffering role to prevent the circuit board from being damaged during clamping and flipping. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the outer shell, electric slider, and spraying assembly of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the screw and placement plate components of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the components of this utility model, including the fixing frame, the second electric push rod, and the connecting plate.

[0019] Figure 5 This is a three-dimensional structural diagram of the third electric push rod, connecting frame, and rotating plate of this utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the infrared transmitter, mounting plate, and first electric push rod of this utility model.

[0021] Component names and serial numbers in the diagram: 1. Base, 101. Infrared emitter, 102. Mounting plate, 103. Guide rod, 104. First electric push rod, 105. Suction pipe, 106. Air pump, 2. Housing, 3. Spraying assembly, 4. First electric slide rail, 41. Second electric slide rail, 42. Electric slider, 5. Limiting plate, 6. Screw, 61. Placement plate, 7. Controller, 8. First motor, 9. Fixing frame, 10. Second electric push rod, 11. Connecting plate, 12. Second motor, 13. Support frame, 14. Third electric push rod, 15. Connecting frame, 16. Rotating plate, 17. Clamping plate, 18. Limiting rod, 19. Spring, 20. Buffer plate. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0023] Example: A spraying apparatus for circuit board production, such as... Figures 1-6As shown, the device includes a base 1, a housing 2, a spraying assembly 3, a first electric slide rail 4, a second electric slide rail 41, an electric slider 42, a limiting plate 5, a screw 6, a placement plate 61, a controller 7, a first motor 8, and a flipping assembly. The housing 2 is welded to the top of the base 1. The two first electric slide rails 4 are distributed on the left and right sides and connected to the upper part of the housing 2 by bolts. The second electric slide rail 41 is slidably connected between the two first electric slide rails 4, and the electric slider 42 is slidably connected to the second electric slide rail 41. The spraying assembly 3 is located at the bottom of the electric slider 42. The precise cooperation between the first electric slide rails 4, the second electric slide rail 41, and the electric slider 42 provides a multi-axial linear motion platform for the spraying assembly 3, allowing it to move along multiple axes, thus covering large areas or specific paths for spraying tasks. The screw 6 rotates inside the lower part of the housing 2, and the placement plate 61 is threaded to the outside of the screw 6, with the components laterally aligned. Each pair of limiting plates 5 forms a group. The larger pair of limiting plates 5 is welded to the lower rear side of the inner shell 2, while the smaller pair is welded to the lower front side of the inner shell 2. The placement plate 61 is located in front of one pair of limiting plates 5 and between the other pair, ensuring that the placement plate 61 can slide precisely into both pairs of limiting plates 5. The controller 7 is bolted to the lower front left side of the outer shell 2. The spraying assembly 3, the first electric slide rail 4, the second electric slide rail 41, and the electric slider 42 are all electrically connected to the controller 7. The first motor 8 is bolted to the lower front center of the outer shell 2, with its output shaft facing rearward. It is fixedly connected to the front end of the screw 6 via a coupling. The first motor 8 is electrically connected to the controller 7. A flipping assembly for flipping the circuit board is installed on the outer shell 2. A drying and suction assembly for drying the circuit board and absorbing harmful gases is also installed on the outer shell 2.

[0024] like Figure 1 , Figure 4 and Figure 5As shown, the flipping assembly includes a fixed frame 9, a second electric push rod 10, a connecting plate 11, a second motor 12, a support frame 13, a third electric push rod 14, a connecting frame 15, a rotating plate 16, and a clamping plate 17. The fixed frame 9 is welded to the front of the top of the outer casing 2. The two second electric push rods 10 are symmetrically distributed and bolted to the fixed frame 9, and electrically connected to the controller 7. The telescopic end of each second electric push rod 10 faces downward. The connecting plate 11 is welded between the telescopic ends of the two second electric push rods 10. The two second motors 12, electrically connected to the controller 7, are symmetrically arranged and bolted to the lower part of the connecting plate 11, with their output shafts facing inward. Each support frame 13 is keyed to the... Each third electric push rod 14, electrically connected to the controller 7 on the output shaft of each second motor 12, is bolted to each support frame 13 with its telescopic end facing outward. Each connecting frame 15 is welded to the telescopic end of each third electric push rod 14. Every four rotating plates 16 on the same side form a group and are rotatably connected to each connecting frame 15. Each clamping plate 17 is rotatably connected to each rotating plate 16 and slidably connected to the corresponding support frame 13, so that when the rotating plate 16 drives the clamping plate 17 to move, the clamping plate 17 can only move in a straight line. The four clamping plates 17 on the same side form a group. The placement plate 61 has four openings for the clamping plate 17 to pass through, ensuring that the clamping plate 17 can avoid the placement plate 61 and directly contact the circuit board.

[0025] like Figure 6 As shown, the drying and suction assembly includes an infrared emitter 101, a mounting plate 102, a guide rod 103, a first electric push rod 104, a suction pipe 105, and a suction pump 106. The first electric push rod 104 is bolted to the rear of the housing 2, with its telescopic end facing right. The mounting plate 102 is welded to the telescopic end of the first electric push rod 104. The infrared emitter 101 is bolted to the mounting plate 102, with its leftmost end passing through the housing 2 and slidingly engaging with it. The guide rod 103 is connected to the right side of the outer shell 2 by welding. The mounting plate 102 is slidably engaged with the guide rod 103. The n-shaped suction pipe 105 is connected to the lower part of the outer shell 2 by welding. The vacuum pump 106 is connected to the rear part of the outer shell 2 by bolts and is located below the first electric push rod 104. The air delivery end of the vacuum pump 106 faces to the right, and the air extraction end faces upward and is connected to the suction pipe 105. The infrared emitter 101, the first electric push rod 104 and the vacuum pump 106 are all electrically connected to the controller 7.

[0026] like Figure 5As shown, it also includes limit rods 18, springs 19 and buffer plates 20. Each pair of limit rods 18 are symmetrically distributed and slidably connected to each clamping plate 17. Each buffer plate 20 is connected between each pair of limit rods 18 by welding and is located on one side of the corresponding clamping plate 17. Each buffer plate 20 has a soft rubber protective pad on the side away from the corresponding clamping plate 17 to prevent the buffer plate 20 from damaging the circuit board surface. Each spring 19 is sleeved on the outside of each limit rod 18, and its two ends are fixedly connected to the corresponding clamping plate 17 and the corresponding buffer plate 20, respectively.

[0027] In the initial state, the telescopic ends of the first electric push rod 104 and the second electric push rod 10 are both in the extended state, and the telescopic end of the third electric push rod 14 is in the shortened state. When the circuit board needs to be sprayed, the operator first connects the feeding pipe to the spraying assembly 3 to provide paint supply for subsequent spraying, and connects the air inlet pipe of the purifier to the air delivery end of the air pump 106. Then, the operating program of the second electric slide rail 41 and the electric slider 42 is written into the controller 7 to ensure that the second electric slide rail 41 and the electric slider 42 can move according to the predetermined trajectory.

[0028] The circuit board to be sprayed is then placed on the placement plate 61. The first motor 8 is started by the controller 7. Its output shaft drives the screw 6 to rotate clockwise, driving the placement plate 61 to move backward, gradually separating from the front set of limiting plates 5 and entering between the rear set of limiting plates 5. When the placement plate 61 moves backward to align with the two first electric slide rails 4, the first motor 8 is temporarily turned off.

[0029] Next, the two first electric slide rails 4, the second electric slide rail 41, the electric slider 42 and the spraying component 3 are started. The second electric slide rail 41 moves back and forth according to the preset program, and the electric slider 42 moves left and right according to the preset program, so that the spraying component 3 moves in a complex path to fully spray the front of the circuit board. After the spraying is completed, the first electric slide rail 4, the second electric slide rail 41, the electric slider 42 and the spraying component 3 automatically stop running.

[0030] Then, the first electric push rod 104 is activated, and its telescopic end is shortened, causing the mounting plate 102 to move to the left. The infrared emitter 101 moves to the left with the mounting plate 102 and enters the outer shell 2, aligning with the circuit board. The infrared emitter 101 is then activated again, emitting infrared rays to irradiate the front of the circuit board and dry the coating, allowing the coating on the front of the circuit board to cure quickly. During the drying process, the vacuum pump 106 is activated, causing the suction pipe 105 to suck away the harmful gases emitted by the coating. The sucked-away harmful gases are sent to the purifier by the vacuum pump 106 for treatment, preventing harmful gases from overflowing from the outer shell 2 and polluting the environment. After drying is completed, the infrared emitter 101 and the vacuum pump 106 are turned off, and the telescopic end of the first electric push rod 104 is extended, causing the mounting plate 102 to move to the right. The infrared emitter 101 moves to the right with the mounting plate 102 and exits the outer shell 2.

[0031] Restart the first motor 8 and control its output shaft to drive the screw 6 to rotate counterclockwise, driving the placement plate 61 to move forward and gradually disengage from the rear set of limiting plates 5 until the placement plate 61 is between the two support frames 13. Then, turn off the first motor 8 again and simultaneously start the two third electric push rods 14, controlling their telescopic ends to extend to a suitable length, driving the two connecting frames 15 to move outward, thereby pulling the two sets of rotating plates 16 to close synchronously. The two sets of clamping plates 17 then move inward, passing through the placement plate 61 to contact and clamp the circuit board. During the clamping process, the buffer plate 20 contacts the circuit board in advance and is squeezed outward. The spring 19 is compressed accordingly, playing a buffering role and preventing the circuit board from being damaged during the clamping process.

[0032] After clamping, activate the two second electric push rods 10 to shorten their telescopic ends, causing the connecting plate 11 to move upward. The two sets of clamping plates 17 move upward with the connecting plate 11, causing the circuit board to detach from the placement plate 61. At this time, activate the two second motors 12 to control their output shafts to rotate the two support frames 13 clockwise by 180 degrees. The two sets of clamping plates 17 rotate clockwise by 180 degrees with the two support frames 13, thereby flipping the circuit board so that the front side of the circuit board is facing down and the back side is facing up. After flipping is completed, turn off the two second motors 12 and control the telescopic ends of the two second electric push rods 10 to extend to the initial position, causing the connecting plate 11 to move downward. The two sets of clamping plates 17 move downward with the connecting plate 11 and return to the initial position, so that the circuit board re-contacts and is placed on the placement plate 61.

[0033] Finally, control the extension ends of the two third electric push rods 14 to shorten, driving the two connecting frames 15 to move inward, thereby pushing the two sets of rotating plates 16 to open synchronously, and the two sets of clamping plates 17 to move outward and detach from the circuit board. Repeat the above spraying steps to spray the reverse side of the circuit board. After spraying, repeat the above drying steps to dry the coating on the reverse side of the circuit board. After drying, operate the first motor 8 to return the placement plate 61 to the initial position, and remove the sprayed circuit board.

[0034] It should be noted that the specifications of the placement plate 61 should be compatible with the specifications of the circuit board to ensure that the clamping plate 17 makes precise contact with the circuit board when passing through the placement plate 61.

[0035] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation in order to cover all variations and equivalent structures and functions.

Claims

1. A spraying device for circuit board production, comprising a base (1), a shell (2), a spraying assembly (3), a first electric sliding rail (4), a second electric sliding rail (41), an electric sliding block (42), a screw rod (6), a placing plate (61), a controller (7), a first motor (8) and a turnover assembly, the shell (2) is fixedly connected to the top end of the base (1), the two first electric sliding rails (4) are distributed left and right, are installed in the upper part of the shell (2), the second electric sliding rail (41) is slidingly connected between the two first electric sliding rails (4), the electric sliding block (42) is slidingly connected on the second electric sliding rail (41), the spraying assembly (3) is arranged at the bottom end of the electric sliding block (42), the screw rod (6) is rotatably arranged in the lower part of the shell (2), the placing plate (61) is threadedly connected to the outside of the screw rod (6), the controller (7) is installed on the left side of the lower part of the shell (2), the spraying assembly (3), the first electric sliding rail (4), the second electric sliding rail (41) and the electric sliding block (42) are electrically connected with the controller (7), the first motor (8) is installed on the central position of the front side of the lower part of the shell (2), the output shaft thereof faces backward, is fixedly connected with the front end of the screw rod (6) through a shaft coupling, the first motor (8) is electrically connected with the controller (7), the turnover assembly for turning over the circuit board is arranged on the shell (2), characterized in that, The drying and air suction assembly is arranged on the shell (2).

2. The coating device for a circuit board according to claim 1, wherein The turnover assembly comprises a fixing frame (9), two second electric push rods (10), a connecting plate (11), two second motors (12), a support frame (13), a third electric push rod (14), a connecting frame (15), a rotating plate (16) and a clamping plate (17). The fixing frame (9) is fixed to the top of the shell (2) and is arranged in a forward position. The two second electric push rods (10) are symmetrically arranged and are embeddedly installed on the fixing frame (9) and are electrically connected with the controller (7). The extension end of each second electric push rod (10) faces downward. The connecting plate (11) is fixed between the extension ends of the two second electric push rods (10) and is electrically connected with the controller (7). The two second motors (12) are symmetrically arranged and are embeddedly installed on the lower part of the connecting plate (11) and have output shafts facing inward. Each support frame (13) is fixed to the output shaft of each second motor (12). Each third electric push rod (14) is electrically connected with the controller (7), is installed on each support frame (13) and has an extension end facing outward. Each connecting frame (15) is fixed to the extension end of each third electric push rod (14). Each four rotating plates (16) on the same side form a group and are rotatably connected to each connecting frame (15). Each clamping plate (17) is rotatably connected to each rotating plate (16) and is slidably connected with the corresponding support frame (13). The four clamping plates (17) on the same side form a group.

3. The coating device for a circuit board according to claim 2, wherein The drying and air suction assembly comprises an infrared emitter (101), a mounting plate (102), a guide rod (103), a first electric push rod (104), an air suction pipe (105) and a suction pump (106). The first electric push rod (104) is installed on the rear part of the shell (2) and has an extension end facing right. The mounting plate (102) is fixed to the extension end of the first electric push rod (104). The infrared emitter (101) is installed on the mounting plate (102) and has a leftmost end penetrating through the shell (2) and being slidably connected with the shell (2). The guide rod (103) is fixed to the right part of the shell (2) and is slidably connected with the mounting plate (102). The air suction pipe (105) in an n-shaped structure is fixed to the lower part of the shell (2). The suction pump (106) is installed on the rear part of the shell (2) and is located below the first electric push rod (104). The air supply end of the suction pump (106) faces right, and the air suction end faces upward and is connected with the air suction pipe (105). The infrared emitter (101), the first electric push rod (104) and the suction pump (106) are electrically connected with the controller (7).

4. The coating device for a circuit board according to claim 3, wherein The turnover assembly further comprises a limiting rod (18), a spring (19) and a buffer plate (20). Each two limiting rods (18) are symmetrically arranged and are slidably connected with each clamping plate (17). Each buffer plate (20) is fixed between each two limiting rods (18) and is located on one side of the corresponding clamping plate (17). Each spring (19) is sleeved on the outside of each limiting rod (18) and is fixedly connected with the corresponding clamping plate (17) and the corresponding buffer plate (20).

5. The coating device for a circuit board according to claim 4, wherein Further comprising limiting plates (5), every two limiting plates (5) transversely aligned form a group, wherein one group of limiting plates (5) with larger size is fixedly connected to the lower rear side of the shell (2), and another group of limiting plates (5) with smaller size is fixedly connected to the lower front side of the shell (2), and the placement plate (61) is located in front of one group of limiting plates (5) and between another group of limiting plates (5).

6. The coating device for a circuit board according to claim 5, wherein Four openings are formed on the placement plate (61) for accommodating the clamping plates (17) to pass through.

7. The coating device for a circuit board according to claim 6, wherein Each buffer plate (20) is provided with a protective pad on the side away from the corresponding clamping plate (17).

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