An automatic coating device for circuit board surfaces

Abstract

This utility model belongs to the field of circuit board processing technology, and particularly relates to an automatic coating device for circuit board surfaces. It includes a support base, a coating component, a linear slide rail, an electric gear set, and a fixing plate. The coating component is located at the top of the support base, and the linear slide rail is also mounted on the top of the support base. A row of electric gear sets is equidistantly distributed on both sides of the linear slide rail. The fixing plate is slidably mounted on the linear slide rail, and a row of toothed grooves is formed on both sides of the fixing plate. The teeth of the electric gear sets mesh with the corresponding toothed grooves. A sliding groove is formed on each side of the fixing plate. This utility model uses a controller to coordinate the actions of each component, achieving full automation of the circuit board coating process. Only the operator needs to load the circuit board and start the system at the appropriate time; the remaining steps are completed automatically by the device, significantly reducing manual intervention and improving production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board processing technology, and in particular relates to an automatic coating device for circuit board surface. Background Technology

[0002] With the continuous development of electronic technology, circuit boards, as fundamental components in electronic devices used to support and connect various electronic components, are increasingly widely used. Circuit boards achieve electrical connections by printing conductive patterns on an insulating substrate and are widely applied in communications, computers, industrial control, consumer electronics, and many other fields. Surface coating is a key process in circuit board manufacturing, primarily used to form a conformal coating with good moisture-proof, corrosion-resistant, and insulating properties, thereby improving the stability and lifespan of the circuit board in complex environments.

[0003] Traditional coating equipment generally has a low degree of automation, and most of them still use manual or semi-automatic operation. They rely heavily on human intervention, and the coating quality is easily affected by the operator's experience and skill level. It is difficult to guarantee the uniformity and stability of the coating, thus affecting the protective performance of conformal coatings and their role in ensuring the overall reliability of circuit boards.

[0004] Therefore, it is necessary to design an automatic coating device for circuit board surfaces to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of traditional coating devices, such as low automation, reliance on manual operation, and difficulty in ensuring the consistency and reliability of coating quality, this utility model provides an automatic coating device for circuit board surfaces.

[0006] This utility model is achieved through the following technical means: an automatic coating device for circuit board surface, including a support base, a coating component, a linear slide rail, an electric gear set, a fixing plate, a clamping plate, screws, a housing, and a controller. The coating component is disposed at the top of the support base, the linear slide rail is installed at the top of the support base, and a row of electric gear sets is provided at equal intervals on both sides of the linear slide rail. The fixing plate is slidably disposed on the linear slide rail, and a row of toothed grooves is opened on both sides of the fixing plate. The teeth of the electric gear sets mesh with the corresponding row of toothed grooves. A sliding groove is opened on each side of the fixing plate, and a screw is slidably disposed in each sliding groove. A clamping plate is fixed between two screws. A nut is threaded on one end of each screw, and the nut is tightly attached to the top of the clamping plate. The housing is installed at the top of the support base and covers the upper area of ​​the support base. The controller is installed on the lower side of the housing, and the electric gear set is electrically connected to the controller.

[0007] In a preferred embodiment of this utility model, the coating assembly includes a vertical electric slide rail, an electric slide rod, a horizontal electric slide rail, an electric slider one, a longitudinal electric slide rail, an electric slider two, a mounting plate, a material tank, a telescopic tube, a coating head, a material pump, and an electric push rod. Multiple vertical electric slide rails distributed along a rectangular direction are mounted on the top of the support base. These vertical electric slide rails surround and contact the outer casing. An electric slide rod is slidably disposed between two horizontally aligned vertical electric slide rails. A horizontal electric slide rail is mounted on each side of the two horizontal electric slide rods that are close to each other. Each horizontal electric slide rail has a sliding... There is one electric slider 1, and a longitudinal electric slide rail is installed between the two electric slider 1s. An electric slider 2 is slidably mounted on the longitudinal electric slide rail. A mounting plate is installed on the electric slider 2. A material tank is installed on one side of the mounting plate and is equipped with a feed port. An electric push rod is installed on the other side of the mounting plate. A coating head is installed on the telescopic end of the electric push rod. A material pump is installed on the upper side of the coating head. A telescopic tube is fixed between the material tank and the material pump. The vertical electric slide rail, electric slide rod, horizontal electric slide rail, electric slider 1, longitudinal electric slide rail, electric slider 2, material pump and electric push rod are all electrically connected to the controller.

[0008] In a preferred embodiment of the present invention, a brush plate and a torsion spring are also included. The brush plate is rotatably mounted on the coating head, and a torsion spring is sleeved on both ends of its upper part. The two ends of the torsion spring are respectively fixedly connected to the coating head and the brush plate.

[0009] In a preferred embodiment of the present invention, a viewing window is also included, with a viewing window fixedly attached to each of the two sides of the outer casing.

[0010] In a preferred embodiment of this utility model, the nut is provided with two symmetrically distributed protrusions.

[0011] In a preferred embodiment of this invention, the lowest point of the brush bristles is lower than the bottom of the coating head.

[0012] Beneficial effects: 1. By coordinating the actions of each component through the controller, the circuit board coating process is fully automated. Operators only need to load the circuit board and start the system at the appropriate time. All other steps are completed automatically by the device, which significantly reduces manual intervention and improves production efficiency.

[0013] 2. By setting up a brush plate and torsion spring, the coating process is equipped with an auxiliary scraping function to smooth the conformal coating material, effectively avoiding defects such as missed coating, accumulation and bubbles, thereby improving the coating quality and coating uniformity. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2This is a three-dimensional structural diagram of the vertical electric slide rail, electric slide rod, and horizontal electric slide rail components of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the longitudinal electric slide rail, electric slider, and mounting plate of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the coating head, material pump, and brush plate components of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the components of this utility model, such as the fixing plate, the sliding groove, and the clamping plate.

[0019] Figure 6 This is a three-dimensional structural diagram of the screw and nut components of this utility model.

[0020] Figure 7 This is a three-dimensional structural diagram of the linear guide rail and electric gear set components of this utility model.

[0021] The attached diagram is labeled as follows: 1. Support base; 2. Vertical electric slide rail; 21. Electric slide rod; 3. Horizontal electric slide rail; 31. Electric slider one; 4. Longitudinal electric slide rail; 41. Electric slider two; 42. Mounting plate; 5. Linear slide rail; 6. Electric gear set; 7. Fixing plate; 8. Slide groove; 9. Clamping plate; 10. Screw; 101. Nut; 11. Gear groove; 12. Material tank; 13. Telescopic tube; 14. Coating head; 141. Material pump; 15. Brush plate; 151. Torsion spring; 16. Electric push rod; 17. Viewing window; 18. Housing; 181. Controller. Detailed Implementation

[0022] Example: An automatic coating device for circuit board surfaces, such as... Figures 1-7As shown, the device includes a support base 1, a coating assembly, a linear slide rail 5, an electric gear set 6, a fixing plate 7, a clamping plate 9, screws 10, a viewing window 17, a housing 18, and a controller 181. The coating assembly is located at the top of the support base 1. The linear slide rail 5 is bolted to the top of the support base 1. A row of electric gear sets 6 is equidistantly distributed on both the front and rear sides of the linear slide rail 5. Each electric gear set 6 is a combination of a drive motor and a gear transmission mechanism. The fixing plate 7 is slidably mounted on the linear slide rail 5, and a row of toothed grooves 11 is formed on both its front and rear sides. The teeth of the electric gear sets 6 mesh with the corresponding row of toothed grooves 11. A sliding groove 8 is formed on each of the front and rear sides of the fixing plate 7, and a sliding gear is slidably mounted in each groove 8. A screw 10 is fixedly connected to a clamping plate 9 between two screws 10. Each screw 10 has a nut 101 threaded on one end. The nut 101 is tightly attached to the top of the clamping plate 9, thereby pressing the clamping plate 9 onto the fixing plate 7. The nut 101 has two symmetrically distributed protrusions, which facilitate the tightening of the nut 101 by applying force through the protrusions. The outer shell 18 is bolted to the top of the support base 1 and covers the upper area of ​​the support base 1. A viewing window 17 is fixedly connected to both the front and rear sides of the outer shell 18, which allows the operator to observe the coating process in real time. The controller 181 is bolted to the lower front side of the outer shell 18. The electric gear set 6 is electrically connected to the controller 181. The controller 181 is a programmable logic controller.

[0023] like Figure 1 , Figure 3 and Figure 4As shown, the coating assembly includes vertical electric slide rails 2, electric slide rods 21, horizontal electric slide rails 3, electric slider 1 31, longitudinal electric slide rails 4, electric slider 2 41, mounting plate 42, material tank 12, telescopic tube 13, coating head 14, material pump 141, and electric push rod 16. The top of the support base 1 is bolted with four vertical electric slide rails 2 distributed along a rectangular direction. The four vertical electric slide rails 2 surround and contact the outer casing 18. An electric slide rod 21 is slidably arranged between two horizontally aligned vertical electric slide rails 2. A horizontal electric slide rail 3 is bolted to the side of each of the two horizontal electric slide rods 21 that is close to each other. Each horizontal electric slide rail 3 has one electric slider 1 31 slidably arranged on it. A longitudinal electric slide rail 4 is bolted between the two parts. An electric slider 2 41 is slidably mounted on the longitudinal electric slide rail 4. A mounting plate 42 is bolted to the electric slider 2 41. A material tank 12 is bolted to the left side of the mounting plate 42 and has a feed inlet mounted on it. An electric push rod 16 is bolted to the right side of the mounting plate 42. A coating head 14 is bolted to the telescopic end of the electric push rod 16. A material pump 141 is bolted to the upper front side of the coating head 14. A telescopic tube 13 is fixedly connected between the material tank 12 and the material pump 141. The vertical electric slide rail 2, electric slide rod 21, horizontal electric slide rail 3, electric slider 1 31, longitudinal electric slide rail 4, electric slider 2 41, material pump 141 and electric push rod 16 are all electrically connected to the controller 181.

[0024] like Figure 3 and Figure 4 As shown, it also includes a brush plate 15 and a torsion spring 151. The brush plate 15 is rotatably mounted on the coating head 14, and a torsion spring 151 is sleeved at both the front and rear ends of its upper part. The two ends of the torsion spring 151 are fixedly connected to the coating head 14 and the brush plate 15, respectively. The torsion spring 151 not only provides the brush plate 15 with the return spring force, but also makes the brush plate 15 always close to the surface of the circuit board, and plays an auxiliary scraping role during the coating process. The lowest point of the brush bristles of the brush plate 15 is lower than the bottom of the coating head 14, ensuring that the brush plate 15 can contact the surface of the circuit board before the coating head 14, providing a flat base for subsequent coating.

[0025] When coating operations are required on the surface of a circuit board, the operator first sets parameters such as coating path, speed, and height through the controller 181. The controller 181 is a programmable logic controller 181, which supports the storage and recall of multiple programs and can adapt to the coating requirements of circuit boards of different specifications.

[0026] After the parameters are set, the operator adds the conformal coating material (such as acrylic, polyurethane, silicone, etc.) into the material tank 12 through the feed port on the material tank 12, and then starts the system. After the system starts, the controller 181 controls the electric gear set 6 to start. The drive motor built into the electric gear set 6 drives the gear transmission mechanism to rotate, so that the teeth of the electric gear set 6 rotate clockwise and mesh with the tooth groove 11, driving the fixing plate 7 to slide to the left along the linear slide rail 5 to its leftmost position, so as to perform the circuit board clamping operation. At this time, the operator turns the nut 101 upward to loosen the clamping plate 9, and slides the clamping plate 9 to the left along the slide groove 8 to the leftmost side of the fixing plate 7, places the circuit board to be coated in the fixing plate 7, then slides the clamping plate 9 to the right to make it close to the edge of the circuit board, and then turns the nut 101 downward to firmly press the clamping plate 9 on the fixing plate 7, so as to achieve stable clamping of the circuit board.

[0027] After clamping is completed, the controller 181 controls the electric gear set 6 to run in reverse. The drive motor built into the electric gear set 6 drives the gear transmission mechanism to run in reverse, causing the teeth of the electric gear set 6 to rotate counterclockwise and mesh with the tooth groove 11 in the opposite direction. This drives the fixing plate 7 to slide to the right and return to the initial position, so that the circuit board is accurately located in the area below the coating head 14, ready to enter the coating stage.

[0028] The coating assembly then begins operation: the vertical electric slide rail 2, electric slide bar 21, horizontal electric slide rail 3, electric slider one 31, longitudinal electric slide rail 4, and electric slider two 41 move sequentially to precisely position the mounting plate 42 and coating head 14 in three-dimensional space, aligning them with the starting coating point of the circuit board. After alignment, the telescopic end of the electric push rod 16 extends downward, causing the coating head 14 to slowly descend and approach the surface of the circuit board. Since the lowest point of the brush bristles of the brush plate 15 is lower than the bottom of the coating head 14, the brush plate 15 will preferentially contact the surface of the circuit board. When the coating head 14 continues to descend and contacts the surface of the circuit board, the brush plate 15 rotates under the contact pressure. At this time, the torsion spring 151 deforms and generates a restoring torque, ensuring that the brush plate 15 is always in close contact with the surface of the circuit board.

[0029] When the coating head 14 contacts the circuit board surface, the material pump 141 starts and draws conformal coating material from the material tank 12 through the telescopic tube 13 and delivers it into the coating head 14. The coating head 14 starts to dispense adhesive and uniformly coats the circuit board surface according to the preset path. During the coating process, the brush plate 15 moves synchronously with the coating head 14 to further assist in smoothing the conformal coating material, improve the coating quality, and prevent problems such as missed coating, accumulation, or bubbles.

[0030] After coating is completed, the electric push rod 16 drives the coating head 14 to rise and reset, while the electric slide rod 21, electric slider one 31 and electric slider two 41 return to their initial positions, ready for the next round of operation;

[0031] Finally, the electric gear set 6 reverses again, driving the fixed plate 7 to continue sliding to the right to the rightmost position of the linear slide rail 5, making it easier for the operator to remove the circuit board. At this time, the operator will turn the nut 101 upward again to release the clamping state of the clamp 9, and slide the clamp 9 to the left to disengage from the circuit board, so that the coated circuit board can be safely removed, completing a complete operation process.

Claims

1. An automatic coating device for circuit board surfaces, characterized in that, The system includes a support base (1), a coating assembly, a linear slide rail (5), an electric gear set (6), a fixing plate (7), a clamping plate (9), screws (10), a housing (18), and a controller (181). The coating assembly is located at the top of the support base (1), and the linear slide rail (5) is installed at the top of the support base (1). A row of electric gear sets (6) is provided on both sides of the linear slide rail (5) at equal intervals. The fixing plate (7) is slidably mounted on the linear slide rail (5), and a row of toothed grooves (11) is opened on both sides of the fixing plate (7). The teeth of the electric gear set (6) correspond to the row of toothed grooves. (11) Engagement, a sliding groove (8) is provided on each side of the fixing plate (7), a screw (10) is slidably arranged in each sliding groove (8), a clamping plate (9) is fixed between the two screws (10), a nut (101) is threaded on one end of each screw (10), the nut (101) is close to the top of the clamping plate (9), the outer shell (18) is installed on the top of the support base (1) and covers the upper area of ​​the support base (1), the controller (181) is installed on the lower side of the outer shell (18), and the electric gear set (6) is electrically connected to the controller (181).

2. The automatic coating device for circuit board surface according to claim 1, characterized in that, The coating assembly includes a vertical electric slide rail (2), an electric slide rod (21), a horizontal electric slide rail (3), an electric slider one (31), a longitudinal electric slide rail (4), an electric slider two (41), a mounting plate (42), a material tank (12), a telescopic tube (13), a coating head (14), a material pump (141), and an electric push rod (16). Multiple vertical electric slide rails (2) are installed at the top of the support base (1) along a rectangular direction. These multiple vertical electric slide rails (2) surround and contact the outer casing (18). An electric slide rod (21) is slidably arranged between two horizontally aligned vertical electric slide rails (2). A horizontal electric slide rail (3) is installed on the side of each of the two horizontal electric slide rods (21) that are close to each other. An electric slider one (31) is slidably arranged on each horizontal electric slide rail (3). Two electric sliders one (31) are slidably arranged on each horizontal electric slide rail (3). 1) A longitudinal electric slide rail (4) is installed between them. An electric slider two (41) is slidably installed on the longitudinal electric slide rail (4). A mounting plate (42) is installed on the electric slider two (41). A material tank (12) is installed on one side of the mounting plate (42) and a feed inlet is installed on it. An electric push rod (16) is installed on the other side of the mounting plate (42). A coating head (14) is installed on the telescopic end of the electric push rod (16). A material pump (141) is installed on the upper side of the coating head (14). A telescopic tube (13) is fixed between the material tank (12) and the material pump (141). The vertical electric slide rail (2), electric slide rod (21), horizontal electric slide rail (3), electric slider one (31), longitudinal electric slide rail (4), electric slider two (41), material pump (141) and electric push rod (16) are all electrically connected to the controller (181).

3. An automatic coating device for circuit board surface according to claim 2, characterized in that, It also includes a brush plate (15) and a torsion spring (151). The brush plate (15) is rotatably mounted on the coating head (14), and a torsion spring (151) is fitted on both ends of its upper part. The two ends of the torsion spring (151) are fixedly connected to the coating head (14) and the brush plate (15) respectively.

4. An automatic coating device for circuit board surface according to claim 3, characterized in that, It also includes a viewing window (17), with a viewing window (17) fixed to both sides of the outer casing (18).

5. An automatic coating device for circuit board surface according to claim 4, characterized in that, The nut (101) has two symmetrically distributed protrusions.

6. An automatic coating device for circuit board surface according to claim 5, characterized in that, The lowest point of the bristles of the brush plate (15) is lower than the bottom of the coating head (14).

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