A device for plugging a hole

Abstract

The application relates to the technical field of circuit board processing, and discloses a device for hole plugging, which comprises an enclosing part, an oil pool, a rack, a conveying device and a scraping device; the enclosing part comprises two mutually spliced cover plates, the two cover plates form a containing groove for enclosing a circuit board after being spliced, the cover plates are provided with communication holes corresponding to through holes of the circuit board, the communication holes are expanded in a direction away from the circuit board, and the communication holes are in communication with the corresponding through holes; the oil pool is provided with hole plugging ink; the conveying device moves on the rack, is used for clamping the enclosing part, and sequentially feeds the enclosing part into the oil pool and the scraping device; the scraping device is connected with the rack and is used for scraping off the hole plugging ink attached to the outside of the enclosing part. The application can improve the fullness of the ink in the through hole during circuit board processing.

Description

Technical Field

[0001] This application relates to the technical field of circuit board processing, and in particular to an apparatus for plugging vias. Background Technology

[0002] During the PCB manufacturing process, it is necessary to fill the vias on the circuit board with green solder mask ink to prevent solder resist from remaining in the vias.

[0003] The existing process for plugging vias in circuit boards typically involves first creating holes in an aluminum sheet that correspond to the vias in the circuit board, then attaching the aluminum sheet to the circuit board to form a composite board, and finally placing the composite board on a screen printing machine. The screen printing machine's squeegee scrapes oil from the surface of the composite board, allowing the green ink to enter the vias.

[0004] Regarding the aforementioned technologies, when scraping green solder mask into the vias with a scraper, issues such as scraper speed or angle deviations and uneven application of the solder mask to the composite board can easily occur, resulting in insufficient solder mask coverage in some vias and affecting the production quality of the circuit board. Summary of the Invention

[0005] In order to improve the ink saturation in vias during circuit board processing, this application provides a via plugging device.

[0006] This application provides a plugging device, which adopts the following technical solution: A plugging device includes an enclosure, an oil tank, a frame, a conveying device, and a scraping device; the enclosure includes two interlocking cover plates, which together form a receiving groove for enclosing a circuit board, and the cover plates have connecting holes that correspond one-to-one with the vias of the circuit board, the connecting holes being enlarged away from the circuit board, and the connecting holes communicating with the corresponding vias. The oil tank contains plugging ink. The conveying device moves on the frame to clamp the enclosure and sequentially feed the enclosure into the oil tank and the scraping device. The scraping device is connected to the frame and is used to scrape off the plugging ink adhering to the outside of the enclosure.

[0007] By adopting the above technical solution, a sealing component is used to enclose the circuit board, covering the portion of the circuit board except for the vias. The sealing component is then fed into an oil bath via a conveying device. As the sealing component moves within the oil bath, it drives the flow of via-filling ink, thereby guiding the via-filling ink from both ends of the via into the via, ensuring the vias are completely filled. The sealing component is then conveyed to a scraping device for scraping, removing the via-filling ink from the outside of the sealing component, ensuring the vias are fully filled and improving the ink saturation within the vias during circuit board processing.

[0008] Optionally, the conveying device includes a movable seat arranged on both sides of the frame, a first power source, a second power source, a third power source, and grippers. The first power source is used to drive the movable seat to move on the frame toward or away from the scraping device. The second power source is mounted on the movable seat and connected to the third power source. The third power source is connected to the grippers to drive the grippers to move up and down to move into or out of the oil tank. The second power source is used to drive the third power sources on both sides of the frame to move closer or further apart so that the grippers clamp or detach from the enclosure.

[0009] By adopting the above technical solution, the first power source, the second power source and the third power source drive the gripper to move in different directions, so as to realize the gripper holding the enclosing part and enable the gripper to drive the enclosing part to each device for processing.

[0010] Optionally, the gripper includes a strip and two clamping blocks disposed on the strip, and the two cover plates have grooves on opposite sides for the clamping blocks to be inserted.

[0011] By adopting the above technical solution, the clamping block limits the cover plate through the cooperation of the clamping block and the groove, so that when the clamping claw clamps the enclosure, the clamping claw and the enclosure are positioned relative to each other.

[0012] Optionally, the scraping device includes two scraping seats connected to the frame, with a space between the two scraping seats for the enclosure to pass through, so that the two scraping seats respectively scrape off the ink on the opposite sides of the enclosure having the communicating hole.

[0013] By adopting the above technical solution, two scraper seats are used to scrape the opposite sides of the enclosure to initially remove excess ink from the enclosure.

[0014] Optionally, the scraper seat includes a base plate, a movable plate, and an elastic member. The movable plate slides on the base plate to adjust the distance between the two scraper seats. The end of the cover plate has an inclined surface for abutting against the movable plate, so that the end of the enclosure member forms a tip for passing through the two scraper seats. The elastic member is located between the base plate and the movable plate to give the movable plate a tendency to abut against the inclined surface toward the other scraper seat.

[0015] By adopting the above technical solution, the inclined surface guides the cooperation between the enclosure and the moving plate, and the moving plate can increase the pressure on the enclosure by the setting of the elastic element, so as to improve the scraping effect of the scraper seat on the enclosure.

[0016] Optionally, the plugging device further includes a material suction device, which includes a mounting frame, an upper suction seat, and a lower suction seat. The upper suction seat is connected to the mounting frame, and the lower suction seat moves up and down on the mounting frame. The conveying device feeds the scraped enclosure onto the lower suction seat. The mounting frame has a drive assembly that drives the lower suction seat to move, so that the lower suction seat drives the enclosure upward to engage with the upper suction seat. The upper suction seat and the lower suction seat are each provided with a cover and a sealing post on their opposite sides. The cover forms a cavity, and the sealing post is located inside the cavity. Both the upper suction seat and the lower suction seat are connected to a suction hose extending into the cavity. The sealing post corresponds to the connecting hole one by one, and the sealing post can be inserted into the corresponding connecting hole. When the sealing post abuts against the inner wall of the connecting hole, the cover abuts against the surface of the cover plate.

[0017] By employing the above technical solution, the upper and lower suction seats clamp the enclosure together, allowing the sealing post to be inserted into the connecting hole to seal the end of the connecting hole near the through hole. During movement, the sealing post guides the ink from the connecting hole into the through hole, keeping the through hole fully filled. Then, air is drawn into the cavity, allowing excess ink in the connecting hole to be removed through the enlarged opening, thereby reducing the ink thickness on the enclosure and minimizing the possibility of excessive ink overflowing onto the circuit board surface after the enclosure separates from the circuit board.

[0018] Optionally, the driving component includes The sliding seat slides up and down on the mounting frame and is connected to the lower suction seat; A rotating shaft is rotatably connected to the sliding seat, with its axis direction perpendicular to the sliding direction of the sliding seat; The gear is coaxially sleeved on the outer wall of the rotating shaft; A rack, vertically connected to the mounting bracket, and meshing with the gear; and A power component, connected to the sliding seat, is used to drive the rotating shaft to rotate.

[0019] By adopting the above technical solution, the power component drives the rotating shaft to rotate, thereby causing the gear to rotate. The gear then moves on the rack to realize the movement of the sliding seat, and in turn, the movement of the sliding seat drives the movement of the lower suction seat.

[0020] Optionally, the upper suction seat and the mounting bracket have a first locking member for locking the upper suction seat, and a support is rotatably connected to the sliding seat. One end of the support is connected to the lower suction seat, and the other end of the support has a second locking member for connecting the upper suction seat. When the first locking member unlocks the upper suction seat and the second locking member locks the upper suction seat, the rotation of the support can drive the upper suction seat and the lower suction seat to switch positions.

[0021] By adopting the above technical solution, the second locking member is locked to the upper suction seat, and the first locking member is unlocked from the upper suction seat, so that the rotation of the support can drive the upper suction seat and the lower suction seat to rotate and exchange positions, thereby facilitating the falling of ink on the upper suction seat.

[0022] Optionally, both the upper suction seat and the lower suction seat have mesh pads inside the cavity.

[0023] By adopting the above technical solution, the mesh can absorb the fallen ink, so that the ink that falls out of the connecting hole is not easy to fall back into the connecting hole.

[0024] Optionally, the lower suction seat has a limiting post, and the enclosure has a limiting hole for the limiting post to be inserted into the two cover plates together.

[0025] By adopting the above technical solution, the cooperation between the limiting post and the limiting hole can improve the stability of the enclosure by making it less likely for the two cover plates to move relative to each other when the lower suction seat drives the enclosure to move.

[0026] In summary, this application has the following beneficial effects: The circuit board is enclosed by a sealing component, and the conveying device puts the circuit board into an oil pool containing via-filling ink, so that the vias of the circuit board can be filled with via-filling ink, thereby improving the fullness of the ink in the vias during circuit board processing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the plugging device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the enclosure in the embodiments of this application; Figure 3 This is a schematic diagram of the exploded structure of the conveying device and the enclosure in the embodiments of this application; Figure 4 This is a schematic diagram of the scraping device in the embodiments of this application; Figure 5 This is a schematic diagram of the structure when the scraper seat and the enclosure are engaged in an embodiment of this application; Figure 6 This is a schematic diagram of the suction device in the embodiments of this application; Figure 7 This is a schematic diagram of the structure of the suction device relative to the enclosure in the embodiments of this application; Figure 8 This is a cross-sectional view of the suction device clamping the enclosure in the embodiments of this application; Figure 9 yes Figure 8 Enlarged structural diagram at point A; Figure 10 This is a schematic diagram of the power assembly and the first support frame in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Enclosing component; 101. Cover plate; 2. Oil tank; 3. Frame; 4. Circuit board; 5. Receiving groove; 6. Through hole; 7. Connecting hole; 8. Moving seat; 9. First power source; 91. Screw; 92. First forward / reverse motor; 10. Second power source; 11. Third power source; 12. Gripper; 121. Strip; 122. Clamping block; 13. Insert groove; 14. Scraper seat; 141. Base plate; 142. Moving plate; 143. Elastic element; 15. Inclined surface; 16. Tip; 17. Mounting bracket; 171. First support bracket; 172. Second support bracket; 18. 19. Upper suction seat; 20. Lower suction seat; 20. Drive assembly; 201. Sliding seat; 202. Rotating shaft; 203. Gear; 204. Rack; 205. Power component; 2051. Second forward / reverse motor; 21. Cover; 22. Sealing column; 23. Cavity; 24. Suction hose; 25. First locking element; 26. Support; 27. Second locking element; 28. Mesh; 29. ​​Limiting column; 30. Limiting hole; 31. Slot; 32. Moving slot; 33. Connecting frame; 34. Slide groove; 35. First locking slot; 36. Base; 37. Third forward / reverse motor; 38. Second locking slot. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0030] This application discloses a device for plugging holes. (Refer to...) Figure 1 and Figure 2 The plugging equipment includes an enclosure 1, an oil tank 2, a frame 3, a conveying device, a scraping device, and a suction device. The enclosure 1 is used to enclose the circuit board 4. The conveying device sequentially delivers the enclosure 1 to the oil tank 2, the scraping device, and the suction device.

[0031] Reference Figure 2 and Figure 3Specifically, the enclosure 1 includes two interlocking cover plates 101. The two cover plates 101 have identical square structures, and each cover plate 101 has a slot 31 for inserting a circuit board 4. When the two cover plates 101 are closed, the slots 31 together form a receiving groove 5 for enclosing and positioning the circuit board 4. Each cover plate 101 has a connecting hole 7 corresponding to a through hole 6. The connecting holes 7 penetrate both opposite sides of the cover plate 101, gradually widening away from the slots 31, with the diameter of the connecting hole 7 at the end closest to the slots 31 matching the diameter of the corresponding through hole 6. When the circuit board 4 is enclosed within the receiving groove 5, the through holes 6 on the circuit board 4 are simultaneously coaxially connected to the corresponding connecting holes 7 on the two cover plates 101.

[0032] Reference Figure 1 The frame 3 has an inverted U-shaped structure, extending horizontally along its length. The oil tank 2, scraper, and suction device are sequentially arranged along the length of the frame 3. The oil tank 2 is placed within the space enclosed by the frame 3, opening upwards and storing sealing ink. The conveying device moves on the frame 3 to clamp the enclosure 1 containing the circuit board 4, thereby moving the enclosure 1 sequentially to the oil tank 2, scraper, and suction device.

[0033] Reference Figure 1 and Figure 3 Specifically, the conveying device includes a movable seat 8, a first power source 9, a second power source 10, and a gripper 12. There are two movable seats 8. The top of the opposite sides of the frame 3 are respectively provided with moving grooves 32 for the two movable seats 8 to move along their own length direction. The first power source 9 corresponds to the moving groove 32 one by one, including a screw 91 rotatably connected in the moving groove 32 and a first forward and reverse motor 92 installed on the frame 3. The screws 91 on both sides of the frame 3 are parallel to each other, and the axial direction of the screw 91 is parallel to the length direction of the frame 3. The output end of the first forward and reverse motor 92 is connected to the screw 91 to drive the screw 91 to rotate. The movable seat 8 slides in the moving groove 32 and is threaded onto the outer wall of the screw 91, so that the rotation of the screw 91 drives the movable seat 8 to slide in the moving groove 32 along the axial direction of the screw 91.

[0034] The second power source 10 corresponds one-to-one with the movable base 8 and is a horizontal cylinder mounted on the movable base 8, with the axis of the horizontal cylinder extending along the horizontal width direction of the frame 3. The third power source 11 corresponds one-to-one with the horizontal cylinder and is a vertical cylinder connected to the horizontal cylinder, with the axis of the vertical cylinder extending vertically and the telescopic end of the vertical cylinder facing downwards. The gripper 12 corresponds one-to-one with the vertical cylinder and is fixedly mounted on the bottom of the telescopic end of the corresponding vertical cylinder.

[0035] Each gripper 12 includes a strip 121 and a gripping block 122. The strip 121 is square in shape, and the bottom of the vertical cylinder has a connecting seat for fixed connection with the strip 121. The strip 121 extends along the length of the frame 3, and the connecting seat is located between the strip 121 and the vertical cylinder. The strips 121 on both sides of the frame 3 are parallel to each other. The gripping block 122 has a block-shaped structure, and there are two gripping blocks 122 in each gripper 12. The two gripping blocks 122 are fixed to the side of the strip 121 away from the connecting seat, and the two gripping blocks 122 are vertically distributed on the strip 121.

[0036] The two cover plates 101 in the enclosure 1 have grooves 13 on opposite sides of the side facing away from the slot 31. The size of the grooves 13 is adapted to the clamping block 122. After the two cover plates 101 enclose the circuit board 4 together, the grooves 13 on the same side of the two cover plates 101 correspond to each other. The gripper 12 can clamp the enclosure 1 by inserting the two clamping blocks 122 into the grooves 13 on the same side of the two cover plates 101 respectively.

[0037] In use, by extending the telescopic ends of the transverse cylinders on both sides of the frame 3, the grippers 12 on both sides of the frame 3 can clamp onto the opposite sides of the enclosure 1, and the side walls of the enclosure 1 abut against the two plates 121 respectively. When the telescopic ends of the transverse cylinders on both sides of the frame 3 are retracted, even if the distance between the two grippers 12 is greater than the width of the enclosure 1, the grippers 12 separate from the enclosure 1.

[0038] When the grippers 12 on both sides of the frame 3 grip the enclosure 1, the extension end of the vertical cylinder can move the grippers 12 and the enclosure 1 downwards into the oil tank 2, and move the enclosure 1 up and down in the oil tank 2, so that the plugging ink in the oil tank 2 can flow, and the plugging ink in the oil tank 2 can fill the through hole 6 from the upper and lower ends through the connecting hole 7. The plugging ink is not easily moved out of the through hole 6 due to the adhesion between it and the circuit board 4. After the vertical cylinder moves the enclosure 1 up and down in the oil tank 2 several times, it moves the enclosure 1 upwards out of the oil tank 2. Then the first forward and reverse motor 92 is started, which moves the moving seat 8 towards the scraping device to send the plugged enclosure 1 and the circuit board 4 to the scraping device.

[0039] Reference Figure 1 and Figure 4 The scraping device includes two scraping seats 14 connected to the frame 3. The two scraping seats 14 are distributed vertically, and there is a space between the two scraping seats 14 for the enclosure 1 to pass through. When the conveying device moves the enclosure 1 to the scraping seat 14, the two scraping seats 14 scrape the upper and lower surfaces of the enclosure 1 respectively, removing the ink from the plugging holes on the outer wall of the enclosure 1. The oil pool 2 extends to the bottom of the scraping device to receive the ink scraped by the scraping seat 14.

[0040] Specifically, each scraper seat 14 includes a base plate 141, a movable plate 142, and an elastic member 143. The base plate 141 is connected to a connecting frame 33 fixed on the frame 3. Of the two scraper seats 14, the connecting frame 33 of the upper scraper seat 14 is connected to the top of the frame 3 and located between the movable slots 32 on both sides of the frame 3, while the connecting frame 33 of the lower scraper seat 14 is connected to the side of the frame 3, so that there is space between the two scraper seats 14 to allow room for the conveying device.

[0041] The movable plate 142 is slidably inserted into the base plate 141. On the opposite side of the base plate 141 of the two scraper seats 14, a groove 34 is formed for the movable plate 142 to slide. The length of the movable plate 142 along the width of the frame 3 is the same as the length of the enclosing member 1 along the width of the frame 3. The elastic member 143 is a spring installed in the groove 34, which gives the movable plate 142 a tendency to move towards the other scraper seat 14. Under the action of the spring, the maximum distance between the two base plates 141 is greater than the maximum thickness of the enclosing member 1, and the minimum distance is greater than the minimum thickness of the enclosing member 1, but less than or equal to the maximum thickness of the enclosing member 1.

[0042] Reference Figure 3 and Figure 5 Adaptively, both ends of the cover plate 101 along the length of the frame 3 have inclined surfaces 15, the inclined surfaces 15 are located on the side of the cover plate 101 away from the slot 31, and the inclined surfaces 15 are inclined towards the side of the cover plate 101 with the slot 31 in the direction close to the end of the cover plate 101, so that both ends of the enclosure 1 along the length of the frame 3 form a pointed tip 16.

[0043] Reference Figure 4 and Figure 5 When the conveying device moves the enclosure 1 to the scraping device, the tip 16 of the enclosure 1 first enters between the two moving plates 142. The two moving plates 142 respectively abut against the inclined surfaces 15 on the upper and lower cover plates 101 of the enclosure 1. As the conveying device continues to move forward, the two moving plates 142 move away from each other through the guidance of the inclined surfaces 15 and squeeze the spring to increase the clamping force between the scraping seat 14 and the cover plate 101, thereby improving the scraping effect of the scraping seat 14 on the enclosure 1.

[0044] After the conveying device passes the scraping device to scrape off the external ink from the enclosure 1, the conveying device continues to move forward, moving the enclosure 1 to the suction device, where it separates from the enclosure 1 and returns to the side of the scraping device away from the suction device.

[0045] Reference Figure 1 and Figure 6The material suction device includes a mounting frame 17, an upper suction seat 18, and a lower suction seat 19. The mounting frame 17 includes a first support frame 171 and a second support frame 172. There are two first support frames 171 and two second support frames 172. The two first support frames 171 extend vertically and are respectively connected to the opposite sides of the top of the frame 3. The two second support frames 172 are also respectively connected to the opposite sides of the top of the frame 3.

[0046] Both the upper suction seat 18 and the lower suction seat 19 are square plates. The upper suction seat 18 is connected between two second support frames 172. Each of the two second support frames 172 has a first locking member 25 for locking the upper suction seat 18. The first locking member 25 is a first electric push rod mounted on the second support frame 172. The axis of the first electric push rod extends horizontally, and the end of the push rod is connected to a square locking block (not shown in the figure). The upper suction seat 18 has symmetrical first locking slots 35 on opposite sides for the first locking blocks to be inserted. When the push rods of the first electric push rods on the two second support frames 172 extend and are respectively inserted into opposite sides of the upper suction seat 18, the upper suction seat 18 is locked. The lower suction seat 19 is located below the upper suction seat 18 and is movably connected between the two first support frames 171. The first support frame 171 has a drive assembly 20 for driving the lower suction seat 19 to move up and down.

[0047] Reference Figure 6 On the opposite sides of the upper suction seat 18 and the lower suction seat 19, a cover 21 and a sealing post 22 are fixed. The cover 21 is square-shaped, forming a cavity 23, and the sealing post 22 is located in the cavity 23. Furthermore, on the opposite sides of the upper suction seat 18 and the lower suction seat 19, suction hoses 24 extending into the opposing cavities 23 are connected. The suction hoses 24 can be made of soft materials such as metal, rubber, or plastic. A suction fan (not shown in the figure) is connected to the end of the suction hose 24 away from the upper suction seat 18 or the lower suction seat 19. The suction fan provides suction to draw air into the cavity 23.

[0048] The sealing column 22 is cylindrical. The sealing columns 22 on the upper suction seat 18 and the lower suction seat 19 correspond one-to-one with the through holes 6 of the circuit board 4. The outer diameter of the sealing column 22 is larger than the diameter of the through hole 6 and smaller than the maximum diameter of the connecting hole 7. The length of the sealing column 22 along its own axis is greater than the length of the cover 21 extending along the axis of the sealing column 22. The difference in the extension length between the sealing column 22 and the cover 21 is less than the extension length of the connecting hole 7 of the cover plate 101.

[0049] Before the conveying device moves the enclosure 1 to the suction device, the cover 21 of the upper suction seat 18 faces downward and the cover 21 of the lower suction seat 19 faces upward. The axis of the sealing column 22 extends vertically, and there is a space between the upper suction seat 18 and the lower suction seat 19 for the enclosure 1 to move in.

[0050] Reference Figure 7 and Figure 8 When the conveying device moves the scraped enclosure 1 between the upper suction seat 18 and the lower suction seat 19, and the through hole 6 of the circuit board 4 is coaxial with the corresponding sealing post 22, the vertical cylinder drives the enclosure 1 to move downward, so that the enclosure 1 moves downward to cooperate with the lower suction seat 19. (Refer to...) Figure 9 This allows the sealing post 22 of the lower suction seat 19 to be inserted into the communicating hole 7 of the lower cover plate 101 of the enclosure 1. The cover 21 of the lower suction seat 19 abuts against the surface of the lower cover plate 101 of the enclosure 1, and the side of the sealing post 22 away from the lower suction seat 19 abuts against the inner wall of the communicating hole 7. An air inlet gap is formed between the cover 21 and the inclined surface 15 of the cover plate 101.

[0051] Reference Figure 7 and Figure 9 After the conveying device drives the enclosure 1 to be inserted into the lower suction seat 19, the horizontal cylinder drives the vertical cylinder to move, causing the gripper 12 to disengage from the enclosure 1. Then, the conveying device returns to the top of the oil tank 2 to clamp and immerse the next enclosure 1 in oil. After the enclosure 1 is engaged with the lower suction seat 19, the drive assembly 20 drives the lower suction seat 19 to move vertically upward, so that the sealing post 22 of the upper suction seat 18 is inserted into and abuts against the communicating hole 7 of the upper cover plate 101 of the enclosure 1. This clamps the enclosure 1 between the upper suction seat 18 and the lower suction seat 19, and the ink in the through hole 6 is sealed between the sealing post 22 of the upper suction seat 18 and the lower suction seat 19. The ink in the through hole 6 is also defoamed by vibration during the upward movement. Then, the suction fan is started to suck away the ink remaining in the communicating hole 7 and on the surface of the cover plate 101 to further clean the enclosure 1.

[0052] Reference Figure 9 In addition, in order to prevent the ink from falling back onto the cover plate 101, both the upper suction seat 18 and the lower suction seat 19 have mesh 28 inside the cavity 23. The ink that is sucked up falls off and is absorbed onto the mesh 28.

[0053] Reference Figure 6 and Figure 10The drive assembly 20 comprises two sets located on opposite sides of the lower suction seat 19. Each drive assembly 20 includes a sliding seat 201, a rotating shaft 202, a gear 203, a rack 204, and a power component 205. The sliding seat 201 is connected to the side of the lower suction seat 19 and slides vertically onto the outer wall of the first support frame 171. A dovetail block is provided on the sliding seat 201, and a dovetail groove is formed on the first support frame 171 to guide the movement of the sliding seat 201. The first support frame 171 has mounting cavities extending through opposite sides of the first support frame 171. The rotating shaft 202 is rotatably connected to the sliding seat 201 and extends into the mounting cavity, with its axis extending horizontally. The gear 203 is coaxially fixedly sleeved on the part of the rotating shaft 202 inside the mounting cavity, and the rack 204 is fixed vertically on the inner wall of the mounting cavity, and the gear 203 meshes with the rack 204.

[0054] The power component 205 is a second forward and reverse motor 2051 mounted on the sliding base 201. The output end of the second forward and reverse motor 2051 is coaxially connected to the rotating shaft 202 to drive the rotating shaft 202 to rotate. Thus, the second forward and reverse motors 2051 on opposite sides of the frame 3 rotate synchronously, which enables the gears 203 on the two sets of drive components 20 to rotate synchronously. Through the meshing of the gears 203 and the rack 204, the sliding bases 201 of the two sets of drive components 20 are driven to move synchronously upward or downward, thereby driving the lower suction base 19 to move up and down.

[0055] Reference Figure 6 and Figure 10 Furthermore, in order to further improve the cleaning effect on the upper cover plate 101 of the enclosure 1, a base 36 is fixed on the upper surface of the sliding seat 201, a support 26 is rotatably connected to the base 36, and a third forward and reverse motor 37 with its output end connected to the support 26 is installed on the base 36 to drive the support 26 to rotate. The axial direction of the output end of the third forward and reverse motor 37 is parallel to the axial direction of the second forward and reverse motor 2051.

[0056] Reference Figure 6 and Figure 8 The support 26 extends along the axis perpendicular to the third forward and reverse motor 37, and the connection point between the third forward and reverse motor 37 and the support 26 is located at the midpoint of the support 26. Of the two ends of the support 26 that are far apart from each other, one end is fixed to the side of the lower suction seat 19, and the sliding seat 201 drives the lower suction seat 19 to move through the support 26; the other end has a second locking member 27 for connecting to the upper suction seat 18. The second locking member 27 is a second electric push rod installed on the bracket, and the extension and retraction direction of the second electric push rod is parallel to the extension and retraction direction of the first electric push rod. A second locking groove 38 is provided on the side wall of the upper suction seat 18 for the push rod of the second electric push rod to be inserted.

[0057] As the power assembly drives the lower suction seat 19 to move upward and engage with the upper suction seat 18, the support 26 remains stationary relative to the sliding seat 201. When the cover 21 on the upper suction seat 18 and the lower suction seat 19 together clamps the enclosure 1, the second electric push rod is aligned with the second locking groove 38. At this time, the push rod of the second electric push rod is first extended and inserted into the second locking groove 38 to position the support 26 relative to the upper suction seat 18. Then, the push rod of the first electric push rod is retracted to release the second support frame 172 from locking the upper suction seat 18, so that when the support 26 rotates, it can drive the upper suction seat 18 to rotate together. Therefore, when the support 26 is positioned relative to both the upper suction seat 18 and the lower suction seat 19, and the second support frame 172 is unlocked from the upper suction seat 18, the support 26 is rotated by the third forward and reverse motor 37, which can swap the positions of the upper suction seat 18 and the lower suction seat 19, making it easier for the ink to fall off when the upper suction seat 18 is swapped.

[0058] Reference Figure 9 Furthermore, in order to improve the stability of the enclosure 1 during the upward movement of the lower suction seat 19, a limiting post 29 is fixed on the side of the cover 21 on the lower suction seat 19 away from the lower suction seat 19. The two cover plates 101 of the enclosure 1 are provided with limiting holes 30 for the limiting post 29 to be inserted. The limiting holes 30 of the two cover plates 101 are interconnected and coaxially arranged. When the enclosure 1 is inserted and engaged with the sealing post 22 on the lower suction seat 19, the limiting post 29 is simultaneously inserted into the limiting holes 30 of the two cover plates 101 to restrict the relative movement of the two cover plates 101 in the horizontal direction.

[0059] The implementation principle of the hole-filling device in this application embodiment is as follows: First, a layer of alcohol rosin liquid is applied into the through hole 6 of the circuit board 4 to enhance the adhesion of the through hole 6 to the hole-filling ink. Then, the circuit board 4 is placed in the enclosure 1, and the enclosure 1 is clamped by the jaws 12 on both sides of the frame 3. After the jaws 12 clamp the enclosure 1, they first move downward to send the enclosure 1 into the oil pool 2 and move up and down in the oil pool 2 so that the through hole 6 and the connecting hole 7 are filled with ink. Then, the jaws 12 drive the enclosure 1 out of the oil pool 2 and move towards the scraping device to scrape off the ink attached to the outer wall of the enclosure 1. Then, the jaws 12 send the enclosure 1 after preliminary scraping to the sealing post 22 of the lower suction seat 19 for insertion and engagement. After that, the jaws 12 disengage from the enclosure 1, and the lower suction seat 19 is in the power unit The component moves upward under the action of the fan, causing the lower suction seat 19 and the upper suction seat 18 to clamp the enclosure 1 together. Then, the fan is started to suck up the excess ink in the connecting hole 7 of the enclosure 1. During the process, the upper suction seat 18 is locked to the support 26 and rotated to switch the positions of the upper suction seat 18 and the lower suction seat 19. After the ink is sucked up, the upper suction seat 18 and the lower suction seat 19 are reset, and the enclosure 1 is removed from between the upper suction seat 18 and the lower suction seat 19 for the next process. In the next process, the circuit board 4 is removed from the enclosure 1, and the ink in the through hole 6 is photocured by ultraviolet light.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for plugging holes, characterized in that: The device includes an enclosure (1), an oil tank (2), a frame (3), a conveying device, and a scraping device. The enclosure (1) includes two interlocking cover plates (101). The two cover plates (101) are joined together to form a receiving groove (5) for enclosing the circuit board (4). The cover plates (101) have connecting holes (7) that correspond one-to-one with the through holes (6) of the circuit board (4). The connecting holes (7) are enlarged in the direction away from the circuit board (4). The connecting holes (7) are connected to the corresponding through holes (6). The oil tank (2) contains hole-filling ink. The conveying device moves on the frame (3) to clamp the enclosure (1) and feed the enclosure (1) into the oil tank (2) and the scraping device in sequence. The scraping device is connected to the frame (3) and is used to scrape off the hole-filling ink attached to the outside of the enclosure (1). The plugging device also includes a suction device, which includes a mounting frame (17), an upper suction seat (18), and a lower suction seat (19). The upper suction seat (18) is connected to the mounting frame (17), and the lower suction seat (19) moves up and down on the mounting frame (17). The conveying device feeds the scraped enclosure (1) onto the lower suction seat (19). The mounting frame (17) has a drive assembly (20) that drives the lower suction seat (19) to move, so that the lower suction seat (19) drives the enclosure (1) to move upward and cooperate with the upper suction seat (18). The upper suction seat (18) and the lower suction seat (19) are each provided with a cover (21) and a sealing column (22) on opposite sides. The cover (21) encloses a cavity (23). The sealing column (22) is located in the cavity (23). The upper suction seat (18) and the lower suction seat (19) are both connected to a suction hose (24) extending into the cavity (23). The sealing column (22) corresponds to the connecting hole (7) one by one, and the sealing column (22) can be inserted into the corresponding connecting hole (7). When the sealing column (22) abuts against the inner wall of the connecting hole (7), the cover (21) abuts against the surface of the cover plate (101). The drive component (20) includes The sliding seat (201) slides up and down on the mounting frame (17) and is connected to the lower suction seat (19); The rotating shaft (202) is rotatably connected to the sliding seat (201), and its axis is perpendicular to the sliding direction of the sliding seat (201). The gear (203) is coaxially sleeved on the outer wall of the rotating shaft (202); A rack (204) is vertically connected to the mounting bracket (17) and meshes with the gear (203); and A power component (205) is connected to the sliding seat (201) and is used to drive the rotating shaft (202) to rotate; The upper suction seat (18) and the mounting bracket (17) have a first locking member (25) for locking the upper suction seat (18), and a support (26) is rotatably connected to the sliding seat (201). One end of the support (26) is connected to the lower suction seat (19), and the other end of the support (26) has a second locking member (27) for connecting the upper suction seat (18). When the first locking member (25) unlocks the upper suction seat (18) and the second locking member (27) locks the upper suction seat (18), the rotation of the support (26) can drive the upper suction seat (18) and the lower suction seat (19) to switch positions.

2. The device for plugging holes according to claim 1, characterized in that: The conveying device includes a movable seat (8) on each side of the frame (3), a first power source (9), a second power source (10), a third power source (11), and a gripper (12). The first power source (9) is used to drive the movable seat (8) to move on the frame (3) towards or away from the scraping device. The second power source (10) is mounted on the movable seat (8) and connected to the third power source (11). The third power source (11) is connected to the gripper (12) to drive the gripper (12) to move up and down to move into or out of the oil tank (2). The second power source (10) is used to drive the third power sources (11) on both sides of the frame (3) to move closer or further away from each other so that the gripper (12) can clamp or detach from the enclosure (1).

3. The device for plugging holes according to claim 2, characterized in that: The gripper (12) includes a strip (121) and two clamping blocks (122) disposed on the strip (121). The two cover plates (101) have grooves (13) on opposite sides for the clamping blocks (122) to be inserted.

4. The device for plugging holes according to claim 1, characterized in that: The scraping device includes two scraping seats (14) connected to the frame (3), and there is a space between the two scraping seats (14) for the enclosure (1) to pass through, so that the two scraping seats (14) respectively scrape off the ink on the opposite sides of the enclosure (1) having the connecting hole (7).

5. The plugging device according to claim 4, characterized in that: The scraper seat (14) includes a base plate (141), a movable plate (142), and an elastic member (143). The movable plate (142) slides on the base plate (141) to adjust the distance between the two scraper seats (14). The end of the cover plate (101) has an inclined surface (15) for abutting against the movable plate (142) so that the end of the enclosure member (1) forms a tip (16) for passing through the two scraper seats (14). The elastic member (143) is located between the base plate (141) and the movable plate (142) to give the movable plate (142) a tendency to abut against the inclined surface (15) in the direction of approaching the other scraper seat (14).

6. The device for plugging holes according to claim 1, characterized in that: Both the upper suction seat (18) and the lower suction seat (19) have mesh (28) padded inside the cavity (23).

7. The device for plugging holes according to claim 1, characterized in that: The lower suction seat (19) has a limiting post (29), and the enclosure (1) has a limiting hole (30) for the limiting post (29) to be inserted into the two cover plates (101).

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