Circuit board surface coating device for circuit board production

Abstract

The invention provides a circuit board surface coating device for circuit board production, which comprises a bottom plate, a pair of long plates are arranged above the bottom plate along the length direction of the bottom plate, a coating assembly is arranged above the middle part of the two long plates, and the tail ends of the two long plates are provided with a plate turning assembly; and chains are arranged on the upper side and the lower side of an inner cavity of each long plate. According to the full-automatic double-sided coating and curing device, full-automatic double-sided coating and curing are achieved, coating and curing of the upper surface and the lower surface of the circuit board are completed at a time through cooperative layout of the conveying belt, the coating assembly, the overturning assembly and the UV curing lamp, full-process automatic operation of feeding, conveying, coating, curing, overturning and discharging of the circuit board is achieved, manual auxiliary operation is not needed, the labor intensity is effectively reduced, and the production efficiency is improved. Manual operation errors are avoided; the coating assembly controls the coating head to move through the multi-dimensional driving structure, uniform coating of the surface of the circuit board can be achieved, instant curing of the UV curing lamp is matched, and the coating quality and the production efficiency are improved.

Description

Technical Field

[0001] This invention belongs to the field of circuit board manufacturing technology, and more specifically, relates to a circuit board surface coating device for circuit board manufacturing. Background Technology

[0002] In the circuit board manufacturing process, surface coating is one of the key processes. Its purpose is to form a protective coating on the surface of the circuit board to improve its insulation performance, corrosion resistance and service life, and ensure the stable operation of the circuit board under complex working conditions.

[0003] Currently, there are still some shortcomings in the actual use of circuit board coating equipment on the market:

[0004] 1. Insufficient equipment adaptability: Most coating equipment has a fixed spacing between its conveyor channels, which cannot flexibly adapt to circuit boards of different widths and sizes, resulting in poor versatility;

[0005] 2. Low efficiency of double-sided coating: After coating one side, the circuit board needs to be manually or mechanically picked up and flipped before coating the other side. The flipping process can easily cause coating damage and positioning misalignment, and the process connection is not smooth, which affects the overall production efficiency.

[0006] Therefore, there is an urgent need for a high-efficiency coating device that can achieve automatic double-sided coating, precise positioning, rapid curing, and flexible adaptability, so as to improve the quality, efficiency, and intelligence level of circuit board surface coating. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides a circuit board surface coating apparatus for circuit board production, which is achieved by the following specific technical means:

[0008] A circuit board surface coating device for circuit board production includes a base plate, a pair of long plates arranged above the base plate along its length, a coating assembly arranged above the middle of the two long plates, and a flipping assembly arranged at the ends of the two long plates; chains are arranged on the upper and lower sides of the inner cavity of each long plate, and a conveyor belt is fixedly connected to each chain, forming a conveying channel between two adjacent conveyor belts;

[0009] The coating assembly includes a frame, a slide block one, and a connecting arm. The slide block one is slidably mounted on the top of the frame, the connecting arm is fixedly mounted on the bottom of the slide block one, a slide block two is slidably mounted on the connecting arm, an electric telescopic rod is fixedly mounted on the bottom of the slide block two, and a coating head is fixedly mounted on the bottom of the electric telescopic rod.

[0010] The flip-plate assembly includes two fixed plates and two flip plates. The two flip plates are located between the two fixed plates and are rotatably connected to the two fixed plates respectively. Two rows of cylinders are fixedly installed on the opposite sides of the two flip plates for flipping the circuit board.

[0011] Furthermore, each of the inner cavities of the chain is respectively fitted with a sprocket one and a sprocket two on both sides. The sprocket one and sprocket two are rotatably mounted on the long plate. A gear one is fixedly mounted on the shaft end of each adjacent sprocket two. The two gears one mesh with each other. A drive motor one is fixedly mounted on the outer wall of each long plate. The output shaft of the drive motor one is fixedly connected to the shaft end of the sprocket one.

[0012] Furthermore, each of the conveyor belts has several support shafts equidistantly arranged in its inner cavity, each support shaft is rotatably connected to a long plate, and a protective shell is fixedly installed on the outer wall of each long plate, with the protective shell sleeved on the gear.

[0013] Furthermore, the two fixed plates are respectively connected and fixed to the two long plates by bolts. A connecting shaft is fixedly installed at both opposite ends of the two flip plates. The connecting shaft is rotatably connected to the fixed plate. A drive motor is fixedly installed on the outer wall of one of the fixed plates. The output shaft of the drive motor is fixedly connected to the connecting shaft. There is a gap between two adjacent rows of cylinders to accommodate the edge of the circuit board. A hexagonal rod and a guide cylinder are provided between the two flip plates. The interior of the hexagonal rod has a through groove adapted to the guide cylinder. The hexagonal rod is slidably installed in the through groove. The guide cylinder is fixedly connected to one side of the flip plate, and the hexagonal rod is fixedly connected to the other side of the flip plate.

[0014] Furthermore, a second drive motor is fixedly installed on the outer wall of the frame, and a lead screw is fixedly connected to the output shaft of the second drive motor. The lead screw passes through the first slide and is threadedly connected to the first slide, for driving the first slide to move along the length direction of the frame; a third drive motor is fixedly installed on the outer wall of the connecting arm, and a second lead screw is fixedly connected to the output shaft of the third drive motor. The second lead screw passes through the second slide and is threadedly connected to the second slide, for driving the second slide to slide along the length direction of the connecting arm.

[0015] Furthermore, a first baffle assembly is provided below the middle of the two long plates. The first baffle assembly includes a mounting plate one, a baffle one, and a baffle two. The mounting plate one is fixedly mounted on the upper end of the base plate. A connecting shaft two is fixedly connected to one end of both the baffle one and the baffle two. The connecting shaft two is rotatably connected to the mounting plate one. A gear two is fixedly mounted to one end of each connecting shaft two. A rack meshes on the two gear two.

[0016] Furthermore, a slider is fixedly installed at the bottom end of the rack, and a groove is provided on the upper surface of the mounting plate, in which the slider is slidably installed; the baffle is parallel to the bottom plate, and the baffle is perpendicular to the bottom plate.

[0017] Furthermore, a second baffle assembly is provided on the rear side of the flip-plate assembly. The second baffle assembly includes a mounting plate two and a baffle three. A slide rod is fixedly installed on the baffle three. A groove two is opened on the upper surface of the mounting plate two. The bottom end of the slide rod is slidably installed in the groove two. A lead screw three is rotatably installed in the groove two. The lead screw three passes through the slide rod and is threadedly connected to the slide rod. A drive motor five is fixedly installed on the outer wall of the mounting plate two. The output shaft of the drive motor five is fixedly connected to one end of the lead screw three. The other end of the lead screw three is fixedly connected to a synchronous pulley one. A rectangular plate is fixedly connected between the mounting plate one and the mounting plate two. A lead screw four is provided above the rectangular plate. The two ends of the lead screw four are rotatably connected to the mounting plate two and the mounting plate one, respectively. One end of the lead screw four passes through the slider and is threadedly connected to the slider. A synchronous pulley two is fixedly installed on the other end of the lead screw four. A synchronous belt is sleeved on the synchronous pulley one and the synchronous pulley two. A long sleeve is provided on the rectangular plate. The long sleeve is sleeved on the synchronous pulley one, the synchronous pulley two, the lead screw four and the synchronous belt.

[0018] Furthermore, adjustment components are provided on both sides of the upper end of the base plate. Each adjustment component includes a pair of connecting plates and a pair of fixing blocks. The pair of connecting plates are fixedly installed on both sides of the upper end of the base plate and are arranged along the width direction of the base plate. The pair of fixing blocks are respectively fixedly installed on the bottom ends of two long plates and are located between the two connecting plates. A bidirectional threaded rod is rotatably installed between the two connecting plates and a guide rod is fixedly installed. The bidirectional threaded rod passes through the two fixing blocks and is threadedly connected to the two fixing blocks. The guide rod movably passes through the two fixing blocks. A drive motor is fixedly installed on the outer wall of one of the connecting plates. The output shaft of the drive motor is fixedly connected to the bidirectional threaded rod.

[0019] Furthermore, UV curing lamp one and UV curing lamp two are respectively provided on the front and rear sides of the coating assembly. UV curing lamp one is used to cure the bottom surface of the circuit board, and UV curing lamp two is used to cure the top surface of the circuit board. UV curing lamp two is located at the upper end of the two long plates, and UV curing lamp one is located between the two long plates and below the upper conveyor belt. Both UV curing lamp one and UV curing lamp two are connected and fixed to the long plates by bolts.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] I. This device achieves fully automated double-sided coating and curing: Through the coordinated layout of the conveyor belt, coating component, flipping component, and UV curing lamp, the coating and curing of the upper and lower surfaces of the circuit board are completed in one go. It realizes the fully automated operation of the circuit board feeding, conveying, coating, curing, flipping, and unloading process, without the need for manual assistance, effectively reducing labor intensity and avoiding human operation errors. The coating component controls the movement of the coating head through a multi-dimensional drive structure, which can achieve uniform coating on the surface of the circuit board. Combined with the instant curing of the UV curing lamp, it improves the coating quality and production efficiency.

[0022] Second, by adjusting the bidirectional threaded rod and guide rod in the assembly, the two long plates are driven to move relative to each other, flexibly adjusting the spacing of the conveying channel, adapting to circuit boards of various widths, and improving the versatility of the equipment.

[0023] Third, the first baffle assembly and the second baffle assembly adopt a linkage design, and achieve coordinated action through structures such as synchronous pulleys and synchronous belts. This ensures that the coating, curing, and flipping processes are closely connected, and automatically completes the positioning, release and pushing of the circuit board without the need for separate drive or manual intervention. This ensures that each process is smooth and continuous, and improves the overall level of automation.

[0024] Fourth, the flip plate assembly adopts a structure with flip plates and cylindrical positioning. The edge of the circuit board is inserted into the gap of the cylinder, and the positioning is stable during the flipping process, which can effectively avoid the circuit board from shifting or bumping. In addition, the flip plates are connected by hexagonal rods and guide cylinders to ensure that the flipping action is synchronized and smooth, further ensuring the integrity of the circuit board and the coating effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the entire circuit board surface coating device for circuit board production according to the present invention.

[0026] Figure 2 This is a schematic diagram of the long plate of the present invention.

[0027] Figure 3 This is a schematic diagram of the chain of the present invention.

[0028] Figure 4 This is a schematic diagram of the coating component of the present invention.

[0029] Figure 5 This is a schematic diagram of the flip panel assembly of the present invention.

[0030] Figure 6 This is a schematic diagram of the flip plate of the present invention.

[0031] Figure 7 This is a schematic diagram of the first baffle assembly of the present invention.

[0032] Figure 8 This is a schematic diagram of the second baffle assembly of the present invention.

[0033] Figure 9 This is a schematic diagram of the rectangular plate of the present invention.

[0034] Figure 10 This is a schematic diagram of the adjustment component of the present invention.

[0035] Figure 11 This is the present invention. Figure 9 A magnified diagram of point A in the middle.

[0036] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0037] 1. Base plate; 2. Long plate; 21. Chain; 22. Conveyor belt; 23. Sprocket 1; 24. Sprocket 2; 25. Drive motor 1; 26. Gear 1; 27. Support shaft; 28. Conveying channel; 29. ​​Protective shell; 3. Coating assembly; 31. Frame; 32. Slide 1; 33. Connecting arm; 34. Slide 2; 35. Electric telescopic rod; 36. Coating head; 37. Drive motor 2; 38. Lead screw 1; 39. Drive motor 3; 4. Flip plate assembly; 41. Fixed plate; 42. Flipping plate; 43. Cylinder; 44. Connecting shaft 1; 45. Drive motor 4; 46. Guide cylinder; 47. Hexagonal rod; 5. First stop Plate assembly; 51. Mounting plate one; 52. Baffle one; 53. Baffle two; 54. Connecting shaft two; 55. Gear two; 56. Rack; 57. Slider; 58. Slide groove one; 6. Second baffle assembly; 61. Mounting plate two; 62. Baffle three; 63. Slide rod; 64. Slide groove two; 65. Lead screw three; 66. Synchronous pulley one; 67. Drive motor five; 68. Synchronous pulley two; 7. Rectangular plate; 71. Lead screw four; 72. Synchronous belt; 8. UV curing lamp one; 81. UV curing lamp two; 9. Adjustment assembly; 91. Connecting plate; 92. Bidirectional threaded rod; 93. Drive motor six; 94. Fixing block; 95. Guide rod. Detailed Implementation

[0038] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0039] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] Example:

[0042] As attached Figure 1 To be continued Figure 11 As shown:

[0043] This invention provides a circuit board surface coating device for circuit board production, including a base plate 1, a pair of long plates 2 arranged above the base plate 1 along the length direction of the base plate 1, a coating component 3 arranged above the middle of the two long plates 2, and a flipping component 4 arranged at the end of the two long plates 2; a chain 21 is arranged on the upper and lower sides of the inner cavity of each long plate 2, and a conveyor belt 22 is fixedly connected to each chain 21, and a conveying channel 28 is formed between two adjacent conveyor belts 22 for conveying the circuit board after flipping;

[0044] The coating assembly 3 includes a frame 31, a slide block 32, and a connecting arm 33. The frame 31 is inverted U-shaped and fixed to the upper end of the base plate 1. The slide block 32 is slidably installed on the top end of the frame 31. The connecting arm 33 is fixedly installed on the bottom end of the slide block 32. A second slide block 34 is slidably installed on the connecting arm 33. An electric telescopic rod 35 is fixedly installed at the bottom end of the second slide block 34. A coating head 36 is fixedly installed at the bottom end of the electric telescopic rod 35.

[0045] The flip plate assembly 4 includes two fixed plates 41 and two flip plates 42. The two flip plates 42 are located between the two fixed plates 41 and are rotatably connected to the two fixed plates 41 respectively. Two rows of cylinders 43 are fixedly installed on the opposite sides of the two flip plates 42 for flipping the circuit board. Each row of cylinders 43 consists of several cylinders 43 equidistantly distributed. Each cylinder 43 is fitted with a rubber sleeve to increase the friction between it and the circuit board and ensure stability during the flipping process.

[0046] Each chain 21 has a sprocket 23 and a sprocket 24 meshing on both sides of its inner cavity. The sprocket 23 and sprocket 24 are rotatably mounted on the long plate 2. Gear 26 is fixedly mounted on the shaft end of each adjacent sprocket 24. The two gears 26 mesh with each other. A drive motor 25 is fixedly mounted on the outer wall of each long plate 2. The output shaft of the drive motor 25 is fixedly connected to the shaft end of the sprocket 23.

[0047] Each conveyor belt 22 has several support shafts 27 equidistantly arranged in its inner cavity. Each support shaft 27 is rotatably connected to the long plate 2. Each long plate 2 has a protective shell 29 fixedly installed on its outer wall. The protective shell 29 is sleeved on the gear 26 to protect the transmission components.

[0048] Two fixed plates 41 are respectively connected and fixed to two long plates 2 by bolts. Connecting shafts 44 are fixedly installed at opposite ends of the two flip plates 42. Connecting shafts 44 are rotatably connected to the fixed plates 41. A drive motor 45 is fixedly installed on the outer wall of one of the fixed plates 41. The output shaft of the drive motor 45 is fixedly connected to the connecting shaft 44. There is a gap between two adjacent rows of cylinders 43 to accommodate the edge of the circuit board. A hexagonal rod 47 and a guide cylinder 46 are provided between the two flip plates 42. The interior of the hexagonal rod 47 has a through groove that matches the guide cylinder 46. The hexagonal rod 47 is slidably installed in the through groove. The guide cylinder 46 is fixedly connected to one side of the flip plate 42, and the hexagonal rod 47 is fixedly connected to the other side of the flip plate 42. During the adjustment, the hexagonal rod 47 and the guide cylinder 46 in the flip plate assembly 4 slide relative to each other to avoid running interference between the two flip plates 42 and ensure smooth adjustment.

[0049] A second drive motor 37 is fixedly installed on the outer wall of the frame 31. The output shaft of the second drive motor 37 is fixedly connected to a lead screw 38. The lead screw 38 passes through a first slide 32 and is threadedly connected to the first slide 32, which is used to drive the first slide 32 to move along the length of the frame 31. A third drive motor 39 is fixedly installed on the outer wall of the connecting arm 33. The output shaft of the third drive motor 39 is fixedly connected to a second lead screw. The second lead screw passes through a second slide 34 and is threadedly connected to the second slide 34, which is used to drive the second slide 34 to slide along the length of the connecting arm 33.

[0050] A first baffle assembly 5 is provided below the middle of the two long plates 2. The first baffle assembly 5 includes a mounting plate 1 51, a baffle 1 52 and a baffle 2 53. The mounting plate 1 51 is fixedly installed on the upper end of the base plate 1. A connecting shaft 2 54 is fixedly connected to one end of both the baffle 1 52 and the baffle 2 53. The connecting shaft 2 54 is rotatably connected to the mounting plate 1 51. A gear 2 55 is fixedly installed at one end of each connecting shaft 2 54. A rack 56 meshes on the two gears 2 55.

[0051] A slider 57 is fixedly installed at the bottom end of the rack 56. A groove 58 is provided on the upper surface of the mounting plate 51, and the slider 57 is slidably installed in the groove 58. A baffle 52 is set parallel to the base plate 1, and a baffle 53 is set perpendicular to the base plate 1.

[0052] A second baffle assembly 6 is provided on the rear side of the flap assembly 4. The second baffle assembly 6 includes a second mounting plate 61 and a third baffle 62. A slide rod 63 is fixedly mounted on the third baffle 62. A second groove 64 is opened on the upper surface of the second mounting plate 61. The bottom end of the slide rod 63 is slidably mounted in the second groove 64. A third lead screw 65 is rotatably mounted in the second groove 64. The third lead screw 65 passes through the slide rod 63 and is threadedly connected to the slide rod 63. A fifth drive motor 67 is fixedly mounted on the outer wall of the second mounting plate 61. The output shaft of the fifth drive motor 67 is fixedly connected to one end of the third lead screw 65, and the other end of the third lead screw 65 is fixedly connected to a synchronous pulley. A rectangular plate 7 is fixedly connected between mounting plate 1 (51) and mounting plate 2 (61). A lead screw 4 (71) is provided above the rectangular plate 7. The two ends of the lead screw 4 (71) are rotatably connected to mounting plate 2 (61) and mounting plate 1 (51) respectively. One end of the lead screw 4 (71) passes through the slider 57 and is threadedly connected to the slider 57. A synchronous pulley 2 (68) is fixedly installed at the other end of the lead screw 4 (71). A synchronous belt 72 is fitted on synchronous pulley 1 (66) and synchronous pulley 2 (68). A long sleeve is provided on the rectangular plate 7. The long sleeve is fitted on synchronous pulley 1 (66), synchronous pulley 2 (68), lead screw 4 (71), and synchronous belt 72 to protect the transmission components.

[0053] Adjustment components 9 are provided on both sides of the upper end of the base plate 1. The adjustment components 9 include a pair of connecting plates 91 and a pair of fixing blocks 94. The pair of connecting plates 91 are fixedly installed on both sides of the upper end of the base plate 1 and are arranged along the width direction of the base plate 1. The pair of fixing blocks 94 are respectively fixedly installed on the bottom ends of the two long plates 2 and are located between the two connecting plates 91. A bidirectional threaded rod 92 is rotatably installed between the two connecting plates 91 and a guide rod 95 is fixedly installed to support the long plates 2 and guide their movement during the adjustment process.

[0054] A bidirectional threaded rod 92 passes through two fixed blocks 94 and is threadedly connected to the two fixed blocks 94. A guide rod 95 movably passes through the two fixed blocks 94. A drive motor 6 93 is fixedly installed on the outer wall of a connecting plate 91 on one side. The output shaft of the drive motor 6 93 is fixedly connected to the bidirectional threaded rod 92 and is used to adjust the distance between the two long plates 2 to adapt to the conveying of circuit boards of various specifications and sizes.

[0055] The coating assembly 3 is equipped with UV curing lamp 1 8 and UV curing lamp 2 81 on the front and rear sides respectively. UV curing lamp 1 8 is used to cure the bottom surface of the circuit board, and UV curing lamp 2 81 is used to cure the top surface of the circuit board. UV curing lamp 2 81 is located at the upper end of the two long plates 2, and UV curing lamp 1 8 is located between the two long plates 2 and below the upper conveyor belt 22. Both UV curing lamp 1 8 and UV curing lamp 2 81 are connected and fixed to the long plates 2 by bolts.

[0056] The working principle of this embodiment:

[0057] Step 1: Before starting the device, adjust the distance between the two long plates 2 according to the width of the circuit board to be coated: Start the drive motor 6 93 in the adjustment components 9 on both sides of the base plate 1. The output shaft of the drive motor 6 93 drives the bidirectional threaded rod 92 to rotate synchronously. The bidirectional threaded rod 92 passes through the two fixed blocks 94 and is threadedly connected to them. The guide rod 95 guides the movement of the fixed blocks 94, thereby driving the two fixed blocks 94 between the two connecting plates 91 to move closer or further apart, thereby adjusting the distance between the long plates 2. During the adjustment process, the hexagonal rod 47 in the flip plate assembly 4 slides relative to the guide cylinder 46 to avoid running interference between the two flip plates 42 and ensure smooth adjustment. After the adjustment is completed, install the matching UV curing lamp 1 8 and UV curing lamp 2 81 according to the width of the circuit board. Both UV curing lamp 1 8 and UV curing lamp 2 81 are connected and fixed to the long plate 2 by bolts for easy installation.

[0058] The circuit board to be coated is placed from the front side of the two long plates 2, so that the two ends of the circuit board are placed on the conveyor belt 22 on the upper side of each long plate 2; the drive motor 25 on the two long plates 2 is started, and the output shaft of the drive motor 25 drives the sprocket 23 to rotate. The sprocket 23 meshes with the chain 21, which in turn drives the upper chain 21 to roll. The chain 21 drives the conveyor belt 22 to run synchronously. The conveyor belt 22 on the upper side of the two long plates 2 work together to transport the circuit board to the lower part of the coating assembly 3.

[0059] Step 2: Top surface coating and curing:

[0060] In the initial state, baffle 2 53 in the first baffle assembly 5 is distributed perpendicular to the base plate 1, and baffle 1 52 is distributed parallel to the base plate 1. When the circuit board is conveyed to contact baffle 2 53, the conveying stops, and the coating assembly 3 begins to coat the upper surface of the circuit board. The action of the coating assembly 3 is controlled by a multi-drive structure: the drive motor 2 37 on the outer wall of the frame 31 is started, and its output shaft drives the lead screw 1 38 to rotate. The lead screw 1 38 is threadedly connected to the slide 1 32, driving the slide 1 32 to move along the length of the frame 31; the drive motor 39 on the outer wall of the connecting arm 33 is started, driving the lead screw 2 to rotate. The lead screw 2 is threadedly connected to the slide 2 34, driving the slide 2 34 to slide along the length of the connecting arm 33; at the same time, the electric telescopic rod 35 adjusts the height of the coating head 36. The three work together to realize the movement of the coating head 36 in both horizontal and vertical directions, ensuring comprehensive and uniform coating of the upper surface of the circuit board.

[0061] After the upper surface of the circuit board is coated, the first baffle assembly 5 and the second baffle assembly 6 work together: the drive motor 67 on the outer wall of the mounting plate 61 in the second baffle assembly 6 is activated, and its output shaft drives the lead screw 65 to rotate. The lead screw 65 is threadedly connected to the slide rod 63, driving the slide rod 63 to move the baffle 62 along the slide groove 64 toward the flip plate 42; at the same time, the lead screw 65 drives the synchronous wheel 66 to rotate, and the synchronous wheel 66 drives the synchronous wheel 68 and the lead screw 71 to rotate synchronously through the synchronous belt 72. The lead screw 71 passes through the slider 57 and is threadedly connected to it. The drive slider 57 slides along the first slide groove 58, and the slider 57 drives the rack 56 to move. The rack 56 meshes with two gears 55, driving the two gears 55 to rotate. This causes the first baffle 52 and the second baffle 53 to rotate around their respective connecting shafts 54, ultimately achieving the switching of the state where the second baffle 53 is parallel to the base plate 1 and the first baffle 52 is perpendicular to the base plate 1. At this time, the second baffle 53 no longer blocks the circuit board, and the circuit board continues to be conveyed to the rear side, passing under the second UV curing lamp 81. The second UV curing lamp 81 cures the coating layer on the upper surface of the circuit board.

[0062] Step 3: Circuit board flipping operation:

[0063] The cured circuit board continues to be conveyed to the flipping assembly 4. At this time, the baffle 3 62 in the second baffle assembly 6 has moved between the two flipping plates 42 to block and position the circuit board. When the circuit board contacts the baffle 3 62, the baffle 3 62 moves away from the flipping plate 42 to reset, avoiding interference with the flipping action. Then, the drive motor 45 on the outer wall of the fixed plate 41 in the flipping assembly 4 is started. Its output shaft drives the connecting shaft 44 to rotate. The connecting shaft 44 drives the flipping plate 42 to rotate. The two ends of the circuit board are inserted into the gap between the two rows of cylinders 43 on the flipping plate 42 and flip synchronously with the flipping plate 42 to realize the flipping operation of the circuit board. During the flipping process, the hexagonal rod 47 between the two flipping plates 42 slides relative to the guide cylinder 46 to ensure the synchronicity and stability of the flipping action.

[0064] Step 4: Coating and curing the lower surface:

[0065] After the circuit board is flipped, the baffle 3 62 in the second baffle assembly 6 moves closer to the flipping plate 42 again, pushing the circuit board into the conveying channel 28 formed between the adjacent conveyor belts 22 on the two long plates 2; at this time, the drive motor 1 25 is started. Since the shaft ends of the two sprockets 24 on each long plate 2 are fixed with meshing gears 26, the two chains 21 on each long plate 2 run synchronously in opposite directions. However, the conveyor belts 22 at the conveying channel 28 convey the circuit board in the same direction, thereby driving the flipped circuit board to be conveyed in the opposite direction to the coating assembly 3.

[0066] When the circuit board is conveyed to contact the vertical baffle 52, the conveying stops and the coating assembly 3 restarts. Through the coordinated action of the drive motor 37, drive motor 39 and electric telescopic rod 35, the position of the coating head 36 is adjusted to coat the lower surface of the circuit board. Even if there is a height difference between the circuit board after flipping and the initial conveying, the electric telescopic rod 35 can still flexibly adjust the height of the coating head 36 to ensure the coating effect. After the surface coating is completed, the circuit board continues to be conveyed in reverse and passes through the UV curing lamp 8 located below the upper conveyor belt 22. The UV curing lamp 8 cures the coating layer on the lower surface of the circuit board. After curing, the circuit board is conveyed to the end of the device to achieve unloading.

[0067] Step 5: The first baffle assembly 5 and the second baffle assembly 6 are linked by a synchronous pulley 66, a synchronous belt 72, a synchronous pulley 68, and a lead screw 71, ensuring smooth connection of the circuit board coating, curing, and flipping processes without the need for additional separate control, thus improving work efficiency; the adjustment assembly 9 can flexibly adjust the distance between the two long plates 2 to adapt to circuit boards of different widths, and the hexagonal rod 47 and guide cylinder 46 structure in the flipping assembly 4 ensure the stability of the flipping plate 42 when adjusting the distance, avoiding operational interference, and further improving the adaptability and operational reliability of the device.

[0068] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A circuit board surface coating apparatus for circuit board production, comprising a base plate (1), characterized in that: A pair of long plates (2) are provided above the base plate (1) along the length of the base plate (1). A coating component (3) is provided above the middle of the two long plates (2). A flip plate component (4) is provided at the end of the two long plates (2). A chain (21) is provided on the upper and lower sides of the inner cavity of each long plate (2). A conveyor belt (22) is fixedly connected to each chain (21). A conveying channel (28) is formed between two adjacent conveyor belts (22). The coating assembly (3) includes a frame (31), a slide block one (32) and a connecting arm (33). The slide block one (32) is slidably mounted on the top of the frame (31). The connecting arm (33) is fixedly mounted on the bottom of the slide block one (32). A slide block two (34) is slidably mounted on the connecting arm (33). An electric telescopic rod (35) is fixedly mounted on the bottom of the slide block two (34). A coating head (36) is fixedly mounted on the bottom of the telescopic rod (35). The flip plate assembly (4) includes two fixed plates (41) and two flip plates (42). The two flip plates (42) are located between the two fixed plates (41). The two flip plates (42) are rotatably connected to the two fixed plates (41) respectively. Two rows of cylinders (43) are fixedly installed on the opposite sides of the two flip plates (42) for flipping the circuit board.

2. The circuit board surface coating apparatus for circuit board production as described in claim 1, characterized in that: Each chain (21) has a sprocket 1 (23) and a sprocket 2 (24) meshing on both sides of its inner cavity. The sprocket 1 (23) and sprocket 2 (24) are rotatably mounted on the long plate (2). Gear 1 (26) is fixedly mounted on the shaft end of each adjacent sprocket 2 (24). The two gears 1 (26) mesh with each other. A drive motor 1 (25) is fixedly mounted on the outer wall of each long plate (2). The output shaft of the drive motor 1 (25) is fixedly connected to the shaft end of the sprocket 1 (23).

3. The circuit board surface coating apparatus for circuit board production as described in claim 2, characterized in that: Each of the conveyor belts (22) has several support shafts (27) equidistantly arranged in its inner cavity. Each support shaft (27) is rotatably connected to the long plate (2). Each long plate (2) has a protective shell (29) fixedly installed on its outer wall. The protective shell (29) is sleeved on the gear (26).

4. The circuit board surface coating apparatus for circuit board production as described in claim 1, characterized in that: The two fixed plates (41) are respectively connected and fixed to the two long plates (2) by bolts. The two flip plates (42) are fixedly installed with connecting shaft one (44) at opposite ends. Connecting shaft one (44) is rotatably connected to the fixed plate (41). One of the fixed plates (41) is fixedly installed with drive motor four (45) on the outer wall. The output shaft of drive motor four (45) is fixedly connected to connecting shaft one (44). There is a gap between two adjacent rows of cylinders (43) to accommodate the edge of the circuit board; a hexagonal rod (47) and a guide cylinder (46) are provided between the two flip plates (42). The interior of the hexagonal rod (47) is provided with a through groove that matches the guide cylinder (46). The hexagonal rod (47) is slidably installed in the through groove. The guide cylinder (46) is fixedly connected to one side of the flip plate (42), and the hexagonal rod (47) is fixedly connected to the other side of the flip plate (42).

5. The circuit board surface coating apparatus for circuit board production as described in claim 1, characterized in that: A second drive motor (37) is fixedly installed on the outer wall of the frame (31). The output shaft of the second drive motor (37) is fixedly connected to a lead screw (38). The lead screw (38) passes through the first slide (32) and is threadedly connected to the first slide (32) to drive the first slide (32) to move along the length direction of the frame (31). A third drive motor (39) is fixedly installed on the outer wall of the connecting arm (33). The output shaft of the third drive motor (39) is fixedly connected to a lead screw (2). The lead screw (2) passes through the second slide (34) and is threadedly connected to the second slide (34) to drive the second slide (34) to slide along the length direction of the connecting arm (33).

6. The circuit board surface coating apparatus for circuit board production as described in claim 1, characterized in that: A first baffle assembly (5) is provided below the middle of the two long plates (2). The first baffle assembly (5) includes a mounting plate (51), a baffle (52), and a baffle (53). The mounting plate (51) is fixedly installed on the upper end of the base plate (1). A connecting shaft (54) is fixedly connected to one end of both the baffle (52) and the baffle (53). The connecting shaft (54) is rotatably connected to the mounting plate (51). A gear (55) is fixedly installed at one end of each connecting shaft (54). A rack (56) meshes on the two gears (55).

7. The circuit board surface coating apparatus for circuit board production as described in claim 6, characterized in that: A slider (57) is fixedly installed at the bottom end of the rack (56), and a groove (58) is opened on the upper surface of the mounting plate (51). The slider (57) is slidably installed in the groove (58); the baffle (52) is set parallel to the bottom plate (1), and the baffle (53) is set perpendicular to the bottom plate (1).

8. The circuit board surface coating apparatus for circuit board production as described in claim 7, characterized in that: The rear side of the flap assembly (4) is provided with a second baffle assembly (6). The second baffle assembly (6) includes a mounting plate two (61) and a baffle three (62). A slide rod (63) is fixedly installed on the baffle three (62). A slide groove two (64) is opened on the upper surface of the mounting plate two (61). The bottom end of the slide rod (63) is slidably installed in the slide groove two (64). A lead screw three (65) is rotatably installed in the slide groove two (64). The lead screw three (65) passes through the slide rod (63) and is threadedly connected to the slide rod (63). A drive motor five (67) is fixedly installed on the outer wall of the mounting plate two (61). The output shaft of the drive motor five (67) is fixedly connected to one end of the lead screw three (65). The other end of the lead screw three (65) is fixedly connected to a synchronous pulley one (66). A rectangular plate (7) is fixedly connected between the first mounting plate (51) and the second mounting plate (61). A screw rod (71) is provided above the rectangular plate (7). The two ends of the screw rod (71) are rotatably connected to the second mounting plate (61) and the first mounting plate (51) respectively. One end of the screw rod (71) passes through the slider (57) and is threadedly connected to the slider (57). The other end of the screw rod (71) is fixedly installed with a synchronous wheel (68). A synchronous belt (72) is sleeved on the first synchronous wheel (66) and the second synchronous wheel (68). A long sleeve is provided on the rectangular plate (7). The long sleeve is sleeved on the first synchronous wheel (66), the second synchronous wheel (68), the screw rod (71) and the synchronous belt (72).

9. The circuit board surface coating apparatus for circuit board production as described in claim 1, characterized in that: Adjustment components (9) are provided on both sides of the upper end of the base plate (1). The adjustment components (9) include a pair of connecting plates (91) and a pair of fixing blocks (94). The pair of connecting plates (91) are fixedly installed on both sides of the upper end of the base plate (1) and are arranged along the width direction of the base plate (1). The pair of fixing blocks (94) are respectively fixedly installed at the bottom ends of two long plates (2) and the two fixing blocks (94) are located between the two connecting plates (91). A bidirectional threaded rod (92) is rotatably installed between the two connecting plates (91) and a guide rod (95) is fixedly installed. The bidirectional threaded rod (92) passes through the two fixing blocks (94) and is threadedly connected to the two fixing blocks (94). The guide rod (95) moves through the two fixing blocks (94). A drive motor six (93) is fixedly installed on the outer wall of one side of the connecting plate (91). The output shaft of the drive motor six (93) is fixedly connected to the bidirectional threaded rod (92).

10. The circuit board surface coating apparatus for circuit board production as described in claim 1, characterized in that: The coating assembly (3) is provided with UV curing lamp one (8) and UV curing lamp two (81) on the front and rear sides respectively. UV curing lamp one (8) is used to cure the bottom surface of the circuit board, and UV curing lamp two (81) is used to cure the top surface of the circuit board. UV curing lamp two (81) is located at the upper end of the two long plates (2), and UV curing lamp one (8) is located between the two long plates (2) and below the upper conveyor belt (22). Both UV curing lamp one (8) and UV curing lamp two (81) are connected and fixed to the long plates (2) by bolts.

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