Full-automatic vacuum hole plugging machine

Abstract

This invention belongs to the field of printed circuit board manufacturing and provides a fully automatic vacuum plugging machine, including a frame with a vacuum chamber inside. Within the vacuum chamber, a feeding bin, a printing bin, and an output bin are sequentially arranged. The feeding bin contains a receiving lifting platform, the printing bin contains a printing worktable and a printing mechanism opposite to the printing worktable, and the output bin contains a picking lifting platform. The machine also includes an alignment mechanism for adjusting the position of the printing worktable, a loading and positioning mechanism for adjusting the receiving lifting platform, and a board-moving mechanism for transferring the circuit board from the receiving lifting platform to the printing worktable and from the printing worktable to the picking lifting platform. This fully automatic vacuum plugging machine enables automatic positioning of the circuit board, ensuring printing stability and thus improving printing efficiency and yield.

Description

Technical Field

[0001] This invention relates to the field of printed circuit board manufacturing, and in particular to a fully automatic vacuum plugging machine. Background Technology

[0002] Resin-filled via technology is becoming increasingly widespread in the printed circuit board (PCB) industry, such as in POFV (via-on-pad) processes. Resin-filled via technology refers to the process where resin is filled into through-holes or blind vias in a vacuum environment using a vacuum printing apparatus, through pressure difference. Traditional vacuum via-filling machines require the PCB to be aligned with the screen frame to ensure printing accuracy. Currently, PCB positioning relies on positioning holes on the PCB and positioning pins on the printing table, achieved manually by picking up and placing the board. This results in the printing table moving twice each time a PCB is printed (first adjusting the printing table to the board receiving position, then adjusting it along with the board to the printing position). This easily leads to printing misalignment problems, affecting the yield rate and reducing printing efficiency.

[0003] The technical problem to be solved by this invention is: how to solve the problems of low working efficiency and low yield of existing vacuum plugging machines. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a fully automatic vacuum plugging machine that can realize automatic positioning of circuit boards, thereby improving printing efficiency and yield.

[0005] The technical solution adopted in this invention is as follows: a fully automatic vacuum plugging machine, including a frame, a vacuum chamber inside the frame, and a feeding bin, a printing bin, and an discharging bin arranged sequentially inside the vacuum chamber. The feeding bin is equipped with a receiving lifting platform, the printing bin is equipped with a printing worktable and a printing mechanism opposite to the printing worktable, and the discharging bin is equipped with a material-retrieving lifting platform. It also includes:

[0006] The alignment mechanism is used to adjust the position of the printing worktable so that the first circuit board on the printing worktable corresponds to the screen frame of the printing mechanism.

[0007] The feeding and positioning mechanism includes a vision positioning component and an adjustment component. The vision positioning component is used to identify the position of the circuit board on the receiving lifting platform. The adjustment component is signal-connected to the vision positioning component and is used to adjust the position of the receiving lifting platform so that the position of each circuit board on the receiving lifting platform is consistent with the position of the first circuit board.

[0008] The board transfer mechanism includes a first board transfer assembly and a second board transfer assembly. The first board transfer assembly is used to transfer the circuit board between the receiving lifting platform and the printing worktable, and the second board transfer assembly is used to transfer the circuit board from the printing worktable to the picking lifting platform.

[0009] The fully automatic vacuum hole-filling machine of this application adjusts the position of the printing worktable by setting an alignment mechanism, so that the holes to be filled on the first circuit board to be printed (the first board) correspond to the pattern holes on the screen frame. After the position of the printing worktable is adjusted, the position of the printing worktable is locked. The first board-transfer assembly transfers the aligned first circuit board to be printed back to the receiving lifting platform. The vision positioning assembly reads the positioning point of the first circuit board to be printed as the positioning reference for the subsequent circuit boards to be printed. When the next circuit board is placed on the receiving lifting platform, the adjustment assembly adjusts the position of the receiving lifting platform so that the position of each subsequent circuit board is consistent with the first board. This helps to ensure the accuracy of feeding and printing, and the work efficiency is higher than that of manual alignment. The first and second board handling components are responsible for loading and unloading respectively. Since the board can be picked up in advance during loading, the circuit board can be moved in advance during unloading. The loading is slower than the unloading without affecting the overall cycle time. This reduces the impact of inertia on the position of the loaded circuit board, improves the stability of the equipment, reduces the waiting time for loading and unloading, and improves the working efficiency of the equipment.

[0010] In some embodiments, the alignment mechanism includes a fixed base, an X-axis adjustment power component, and a Y-axis adjustment power component. The fixed base is disposed at the bottom of the printing worktable, and the printing worktable is movably connected to the fixed base. The X-axis adjustment power component connects the fixed base and the printing worktable to drive the printing worktable to adjust its position relative to the fixed base in the X-axis direction. The Y-axis adjustment power component connects the fixed base and the printing worktable to drive the printing worktable to adjust its position relative to the fixed base in the Y-axis direction.

[0011] By adopting the above technical solution, the X-axis adjustment power component and the Y-axis adjustment power component work together to achieve automatic positioning of the printing worktable, so that the circuit board on the printing worktable can be accurately positioned with the printing pattern of the screen frame, making the alignment more efficient.

[0012] In some embodiments, the alignment mechanism further includes a locking assembly, which includes a pressure member, a friction member, and a locking power member. The friction member is mounted on the printing worktable, the pressure member is connected to the fixed base, and the locking power member drives the pressure member to separate from or contact the friction member.

[0013] Using the above technical solution, when the printing worktable is adjusted, the locking power component drives the pressing component to separate from the friction component, so as to facilitate the adjustment of the printing worktable's position. After the printing worktable is adjusted, the locking power component drives the pressing component to press against the friction component, and the friction between the pressing component and the friction component locks the position of the printing worktable.

[0014] In some embodiments, the positioning assembly includes a base, an X-axis fine-tuning drive, and a Y-axis fine-tuning drive. The base is disposed at the bottom of the receiving lifting platform, and the receiving lifting platform is movably connected to the base. The X-axis fine-tuning drive connects the base and the receiving lifting platform to drive the receiving lifting platform to move relative to the base in the X direction. The Y-axis fine-tuning drive connects the base and the receiving lifting platform to drive the receiving lifting platform to move relative to the base in the Y direction.

[0015] By adopting the above technical solution, the X-axis fine-tuning drive and the Y-axis fine-tuning drive are used to adjust the position of the receiving lifting platform relative to the base, ensuring that the position of each circuit board to be printed is consistent with the first board, improving the repeatability of printing, and thus ensuring the printing yield.

[0016] In some embodiments, the first transfer assembly includes a first slide and a second slide disposed on opposite sides of the printing worktable, a lifting frame connecting the first slide and the second slide, and a first transverse seat and a second transverse seat slidably disposed on the lifting frame. The first slide and the second slide are driven by a transfer power component to reciprocate between the receiving lifting platform and the printing worktable. The lifting frame is driven to rise and fall by a transfer lifting power component. The first transverse seat is disposed at the end of the lifting frame near the first slide, and the second transverse seat is disposed at the end of the lifting frame near the second slide. The first transverse seat and the second transverse seat are driven by a transverse movement power component to move closer to or further away from each other. Both the first transverse seat and the second transverse seat are provided with clamping components.

[0017] By adopting the above technical solution, connecting the two first slides and the second slides with the lifting frame can avoid interference between the first board transfer assembly and the receiving lifting platform and the printing worktable. Moreover, the first slide, the second slide, the lifting frame, the first transverse seat and the second transverse seat form a whole, making the structure of the first board transfer assembly more stable, thereby ensuring the stability of the circuit board during transfer and thus ensuring the accuracy of the circuit board positioning.

[0018] In some embodiments, the feed hopper is equipped with a feed sealing door at its opening, and the receiving lifting platform, after rising and contacting the top of the feed hopper, forms a receiving chamber with the closed feed sealing door.

[0019] The discharge hopper is equipped with a discharge sealing door. After the material lifting platform rises and contacts the top of the discharge hopper, it forms a material picking chamber with the closed discharge sealing door.

[0020] By adopting the above technical solution, the receiving chamber will form a small chamber independent of the feeding hopper when receiving materials, which can shorten the time of vacuum breaking and vacuuming, improve the feeding efficiency, and reduce energy consumption; the discharging chamber will form a small chamber independent of the discharging hopper when feeding materials, thereby shortening the time of vacuum breaking and vacuuming, improving the discharging efficiency, and reducing energy consumption.

[0021] In some embodiments, a first counter-support assembly is provided at the bottom of the receiving lifting platform. The first counter-support assembly includes a first level column, a first reinforcing column, and a first pushing power component. One end of the first level column is connected to the bottom of the receiving lifting platform, and the other end extends away from the bottom of the lifting platform. The first reinforcing column is located below the first level column. The first pushing power component drives the first reinforcing column to separate from or contact the bottom of the first level column.

[0022] Using the above technical solution, since there is a large pressure difference between the top and bottom of the receiving lifting platform after the vacuum in the receiving chamber is broken, when the receiving lifting platform is raised, the first pushing power component drives the first reinforcing block to contact the bottom of the first equal-height column to support the receiving lifting platform and prevent deformation of the receiving lifting platform. When the receiving lifting platform needs to be lowered, the first pushing power component drives the first reinforcing block to reset and separate from the first equal-height column to prevent the first reinforcing column from interfering with the descent of the receiving lifting platform. The first anti-support component can appropriately reduce the thickness of the receiving lifting platform, leaving more space for the discharge hopper to perform other functions.

[0023] In some embodiments, a second anti-support assembly is provided at the bottom of the material lifting platform. The second anti-support assembly includes a second leveling column, a second reinforcing column, and a second pushing power component. One end of the second leveling column is connected to the bottom of the material lifting platform, and the other end extends away from the bottom of the lifting platform. The second reinforcing column is located below the second leveling column. The second pushing power component drives the second reinforcing column to separate from or contact the bottom of the second leveling column.

[0024] Using the above technical solution, the second anti-support component is used to support the raised material handling platform to prevent deformation of the platform, while also reserving more space for the discharge hopper.

[0025] In some embodiments, a visual inspection mechanism is also included for detecting whether the printed circuit board is qualified. The visual inspection mechanism includes a visual recognition component and an alarm. The visual recognition component is located above the receiving lifting platform, and the alarm is signal-connected to the visual recognition component.

[0026] By adopting the above technical solution, visual inspection agencies can replace manual labor in performing visual inspections of printed circuit boards, making the inspection more efficient. When printing misalignment occurs, they can promptly remind operators to make adjustments, thus avoiding greater losses.

[0027] In some embodiments, a loading robot and a unloading robot are also included. The loading robot is located at the opening of the feeding hopper and is used to place the circuit board to be printed on the receiving lifting platform. The unloading robot is located at the opening of the discharging hopper and is used to remove the printed circuit board from the receiving lifting platform.

[0028] By adopting the above technical solution, automatic loading and unloading of circuit boards can be achieved by setting up loading and unloading robots, which is conducive to the automated production of vacuum plugging operations. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a fully automatic vacuum plugging machine according to a preferred embodiment of the present invention;

[0030] Figure 2 for Figure 1 A structural schematic diagram of a fully automatic vacuum plugging machine from another perspective;

[0031] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the fully automatic vacuum plugging machine along line AA.

[0032] Figure 4 for Figure 3 The diagram shows the internal structure of the vacuum chamber of a fully automatic vacuum plugging machine.

[0033] Figure 5 for Figure 4 The diagram shows the structure of the printing worktable and the alignment mechanism.

[0034] Figure 6 for Figure 5 The diagram shows a structural schematic of the printing worktable and alignment mechanism from another perspective.

[0035] Figure 7 for Figure 4 The diagram shows the structure of the receiving lifting platform and the adjustment assembly.

[0036] Figure 8 for Figure 7 A structural schematic diagram of the receiving lifting platform and the adjustment component from another perspective;

[0037] Figure 9 for Figure 4 The diagram shows the structure of the first plate-moving assembly.

[0038] In the diagram: 100. Fully automatic vacuum plugging machine; 10. Frame; 11. Vacuum chamber; 12. Feeding bin; 121. Receiving lifting platform; 122. Clamping plate fixing assembly; 1221. First clamping plate; 1222. Second clamping plate; 1223. First mounting bracket; 1224. Second mounting bracket; 1225. Spacing adjustment power component; 13. Printing chamber; 131. Printing worktable; 132. Printing mechanism; 14. 141. Discharge bin; 15. Material lifting platform; 16. Inlet sealing door; 20. Discharge sealing door; 21. Alignment mechanism; 22. Fixed base; 22. X-axis adjustment power component; 221. First X-axis motor; 222. First X-axis cylinder; 223. Connecting base; 224. Top block; 23. Y-axis adjustment power component; 24. Locking assembly; 241. Pressing component; 242. Friction component; 243. Locking power component; 30. Feeding Positioning mechanism; 31. Visual positioning component; 32. Adjustment component; 321. Base; 322. X-axis fine-tuning drive; 323. X-axis slide; 324. Y-axis fine-tuning drive; 325. Y-axis slide; 40. Transfer mechanism; 41. First transfer assembly; 411. First slide; 412. Second slide; 413. Lifting frame; 414. First transverse slide; 415. Second transverse slide; 416. Clamping component; 4 17. Transfer plate power component; 418. Pallet lifting power component; 419. Lateral movement power component; 420. Positioning column; 421. Positioning fork; 43. Second pallet assembly; 50. First counter-support assembly; 51. First leveling column; 52. First reinforcing column; 53. First pushing power component; 60. Second counter-support assembly; 70. Visual inspection mechanism; 71. Visual recognition component; 80. Loading robot; 90. Unloading robot. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] Please see Figures 1 to 9 The fully automatic vacuum plugging machine 100 of this invention, according to a preferred embodiment, includes a frame 10, inside which is a vacuum chamber 11. The vacuum chamber 11 contains a feeding bin 12, a printing bin 13, and a discharging bin 14 arranged sequentially. The feeding bin 12 contains a receiving lifting platform 121. The printing bin 13 contains a printing worktable 131 and a printing mechanism 132 opposite to the printing worktable 131. The discharging bin 14 contains a picking lifting platform 141. The fully automatic vacuum plugging machine of this application also includes an alignment mechanism 20 for adjusting the position of the printing worktable 131 so that the first circuit board on the printing worktable 131 corresponds to the frame of the printing mechanism 132; a feeding positioning mechanism 30 for adjusting the position of the receiving lifting platform 121 so that each circuit board to be printed is aligned with the first board; and a board-moving mechanism 40 for moving the circuit board from the receiving lifting platform 121 to the printing worktable 131 or from the printing worktable 131 to the picking lifting platform. The fully automatic vacuum plugging machine 100 of this application can realize automatic positioning of circuit boards, which greatly improves the printing accuracy and work efficiency.

[0043] Specifically, such as Figure 4 and Figure 5 As shown, the alignment mechanism 20 includes a fixed base 21, an X-axis adjusting power component 22, and a Y-axis adjusting power component 23 (the X-axis is defined as the direction of the circuit board's rotation within the vacuum chamber 11, and the Y-axis is defined as the direction perpendicular to the circuit board's rotation within the vacuum chamber 11). The fixed base 21 is located at the bottom of the printing worktable 131 and is mounted on the base (not shown) of the frame 10. The printing worktable 131 is movably connected to the fixed base 21. The X-axis adjusting power component 22 connects the fixed base 21 and the printing worktable 131 to drive the printing worktable 131 to adjust its position relative to the fixed base 21 in the X-axis direction. The Y-axis adjusting power component 23 connects the fixed base 21 and the printing worktable 131 to drive the printing worktable 131 to adjust its position relative to the fixed base 21 in the Y-axis direction. By cooperating with the X-axis adjusting power component 22 and the Y-axis adjusting power component 23, the position of the printing worktable 131 can be automatically adjusted, so that the circuit board on the printing worktable 131 can be accurately positioned with the printing pattern of the screen frame, making the alignment more efficient.

[0044] In this embodiment, the X-axis adjustment power component 22 includes a first X-axis motor 221, a first X-axis cylinder 222, a connecting seat 223, and a top block 224. The first X-axis motor 221 is mounted on the fixed seat 21. The output shaft of the first X-axis motor 221 is connected to a lead screw, and a nut is connected to the lead screw. The nut is connected to a slider, and a top pin is connected to the end of the slider away from the first X-axis motor 221. The connecting seat 223 is mounted on the printing worktable 131. The top block 224 is slidably connected to the connecting seat 223. The connecting seat 223 is provided with a Y-axis sliding groove corresponding to the top block 224. The top pin abuts against the top block 224. The cylinder body of the first X-axis cylinder 222 is pivotally connected to the fixed seat 21, and the piston rod of the first X-axis cylinder 222 is pivotally connected to the connecting seat 223. The first X-axis cylinder 222 and the first X-axis motor 221 are respectively located on opposite sides of the connecting seat 223. The printing worktable 131 is adjusted in the X-direction by the first X-axis motor 221 pushing forward and the first X-axis cylinder 222 retracting, or by the first X-axis cylinder 222 extending forward and the first X-axis motor 221 retracting. Since the top pin and the top block 224 are in abutting connection and the top block 224 can slide within the Y-direction groove, and the first X-axis cylinder 222 is pivotally connected to both the fixed seat 21 and the connecting seat 223, the first X-axis cylinder 222 can keep the top pin and the top block 224 in abutting position, providing clearance for Y-direction adjustment and preventing interference between X-direction and Y-direction adjustments, thus making the position adjustment of the printing worktable 131 more precise. The structure and principle of the Y-direction adjusting power component 23 are the same as those of the X-direction adjusting power component 22, only differing in their adjustment direction, and will not be described further here.

[0045] In this embodiment, the printing mechanism 132 is positioned directly above the printing worktable 131. The printing mechanism 132 can move up and down relative to the printing worktable 131, thus making full use of the vertical space within the printing chamber 13 and reducing the space occupied by the bottom plate of the frame 10. The printing mechanism 132 is used to apply filler material to the circuit board on the printing worktable 131. The specific structure of the printing mechanism 132 can refer to existing printing structures.

[0046] like Figure 5 As shown, in one specific embodiment, the alignment mechanism 20 further includes a locking component 24, which includes a pressing member 241, a friction member 242, and a locking power member 243. The friction member 242 is mounted on the printing worktable 131, and the pressing member 241 is connected to the fixed base 21. The locking power member 243 drives the pressing member 241 to separate from or contact the friction member 242. When the printing worktable 131 is adjusted, the locking power member 243 drives the pressing member 241 to separate from the friction member 242 to facilitate the adjustment of the position of the printing worktable 131. After the position of the printing worktable 131 is adjusted, the locking power member 243 drives the pressing member 241 to press against the friction member 242, using the friction between the pressing member 241 and the friction member 242 to lock the position of the printing worktable 131.

[0047] In this embodiment, the locking power component 243 is mounted on the fixed base 21. The locking power component 243 is connected to the pressure component 241 through a connecting rod. The friction component 242 is provided with a through hole, and the diameter of the through hole is larger than the diameter of the connecting rod. The connecting rod passes through the through hole and connects to the pressure component 241. This can limit the adjustment range of the alignment mechanism 20 to prevent overtravel.

[0048] Optionally, in order to make the force more even when the printing worktable 131 is locked, the number of locking components 24 is more than one set, and each set of locking components 24 is evenly arranged on the edge of the fixed seat 21.

[0049] Specifically, such as Figure 3 and Figure 8 As shown, the feeding and positioning mechanism 30 includes a vision positioning component 31 and an adjustment component 32. The vision positioning component 31 is used to identify the position of the circuit board on the receiving lifting platform 121 and compare the position with the position of the first board (positioning reference). The adjustment component 32 is signal-connected to the vision positioning component 31 and is used to adjust the position of the receiving lifting platform 121 according to the position deviation identified by the vision positioning component 31, so that the position of each circuit board on the receiving lifting platform 121 is consistent with the position of the first circuit board.

[0050] In this embodiment, the viewing angle positioning component includes at least one set of CCD lens groups, and the number of CCD lens groups can be adjusted according to actual needs.

[0051] like Figure 7 and Figure 8 As shown, in one specific embodiment, the positioning component 32 includes a base 321, an X-axis fine-tuning drive 322, and a Y-axis fine-tuning drive 324. The base 321 is disposed at the bottom of the receiving lifting platform 121, and the receiving lifting platform 121 is movably connected to the base 321. The X-axis fine-tuning drive 322 connects the base 321 and the receiving lifting platform 121, and is used to drive the receiving lifting platform 121 to move relative to the base 321 in the X direction. The Y-axis fine-tuning drive 324 connects the base 321 and the receiving lifting platform 121, and is used to drive the receiving lifting platform 121 to move relative to the base 321 in the Y direction. By cooperating with the X-axis fine-tuning drive 322 and the Y-axis fine-tuning drive 324, the position of the receiving lifting platform 121 relative to the base 321 can be adjusted, ensuring that the position of each circuit board to be printed is consistent with the first board, improving the repeatability of printing, and thus ensuring the yield rate of printing.

[0052] Specifically, the output end of the X-axis fine-tuning drive 322 is connected to an X-axis slide 323. The bottom of the X-axis slide 323 is slidably connected to the base 321, and the X-axis slide 323 can slide relative to the base 321 along the X-axis direction. The top of the X-axis slide 323 is slidably connected to the receiving lifting platform 121, and the X-axis slide 323 can slide relative to the receiving lifting platform along the Y-axis direction. This arrangement ensures that the adjustments in the X-axis and Y-axis directions do not interfere with each other. Similarly, the output end of the Y-axis fine-tuning drive 324 is connected to a Y-axis slide 325. The structure and working principle of the Y-axis slide 325 are the same as those of the X-axis slide 323, only the directions are different, and will not be described further here.

[0053] Optionally, the X-axis fine-tuning drive 322 and the Y-axis fine-tuning drive 324 are one of the following power components: motor, cylinder, hydraulic cylinder or electric cylinder, preferably a servo motor.

[0054] like Figure 4 and Figure 9 As shown, the board transfer mechanism 40 includes a first board transfer assembly 41 and a second board transfer assembly 43. The first board transfer assembly 41 is used to transfer the circuit board between the receiving lifting platform 121 and the printing worktable 131, and the second board transfer assembly 43 is used to transfer the circuit board from the printing worktable 131 to the unloading lifting platform 141. The first board transfer assembly 41 and the second board transfer assembly 43 have the same structure and working principle. The first board transfer assembly 41 will be described in detail below.

[0055] Specifically, in one embodiment, the first transfer plate assembly 41 includes a first slide 411 and a second slide 412 disposed on opposite sides of the printing worktable 131, a lifting frame 413 connecting the first slide 411 and the second slide 412, and a first transverse seat 414 and a second transverse seat 415 slidably disposed on the lifting frame 413. The first slide 411 and the second slide 412 are driven by a transfer plate power component 417 to reciprocate between the receiving lifting platform 121 and the printing worktable 131. The lifting frame 413 is driven to rise and fall by a transfer plate lifting power component 418. The first transverse seat 414 is disposed at one end of the lifting frame 413 near the first slide 411, and the second transverse seat 415 is disposed at one end of the lifting frame 413 near the second slide 412. The first transverse seat 414 and the second transverse seat 415 are driven to move closer to or further away from each other by a transverse movement force component 419. Both the first transverse seat 414 and the second transverse seat 415 are provided with clamping components 416. Connecting the two first slides 411 and the second slide 412 via the lifting frame 413 can prevent interference between the first board transfer assembly 41 and the receiving lifting platform 121 and the printing worktable 131. Moreover, the first slide 411, the second slide 412, the lifting frame 413, the first transverse slide 414 and the second transverse slide 415 form a whole, making the structure of the first board transfer assembly 41 more stable, thereby ensuring the stability of the circuit board during transfer and ensuring the accuracy of the circuit board positioning.

[0056] In this embodiment, the first slide 411 and the second slide 412 are driven to move along the X-axis by a moving plate power member 417. In other embodiments, the first slide 411 and the second slide 412 may each be equipped with a moving plate power member 417. The two ends of the lifting frame 413 are slidably connected to the first slide 411 and the second slide 412, respectively, and each of the first slide 411 and the second slide 412 is equipped with a moving plate lifting power member 418 to drive the lifting frame 413 to move up and down. In other embodiments, a moving plate lifting power member 418 may also be used to drive the lifting frame 413 to move up and down. The first transverse sliding seat 414 and the second transverse sliding seat 415 are driven to move closer or further apart by a transverse moving force member 419. In other embodiments, the first transverse sliding seat 414 and the second transverse sliding seat 415 may each be equipped with a transverse moving force member 419.

[0057] Preferably, in this embodiment, to improve the handling accuracy of the first pallet assembly 41, the pallet moving power component 417, the pallet lifting power component 418, and the lateral moving power component 419 are all servo motors. In other embodiments, cylinders, hydraulic cylinders, or ordinary motors that can achieve the same function can also be used.

[0058] In this embodiment, the clamping member 416 is a rigid gripper. In other embodiments, the clamping member 416 may also be a flexible gripper or a vacuum suction cup.

[0059] By setting up two independent first transfer assembly 41 and second transfer assembly 43, their respective operating speeds can be adjusted individually according to the different requirements of loading and unloading accuracy. For example, when the circuit board is transferred from the feeding bin 12 to the printing bin 13, the stability and movement accuracy requirements of the first transfer assembly 41 are relatively high. The first transfer assembly 41 can be controlled to transfer the circuit board from the feeding bin 12 to the printing bin 13 at a slower speed to reduce the impact of inertia on loading accuracy. When the first transfer assembly 41 places the circuit board on the printing worktable 131 in the printing bin 13, it can quickly return to the feeding bin 12 to pick up the next circuit board. When unloading and picking up the board, the circuit board can be moved in advance. Under the premise of not affecting the overall cycle time, loading is slower than unloading and does not affect the cycle time. Moreover, the second transfer assembly 43 can also transfer the circuit board at a slower speed when unloading is loaded and quickly reset when unloaded, thereby improving work efficiency.

[0060] Preferably, in order to improve the accuracy of feeding, a positioning fork 421 is provided at the bottom of both the printing worktable 131 and the receiving lifting platform 121, and a positioning post 420 corresponding to the positioning fork 421 is provided on both the first slide 411 and the second slide 412. The positioning fork 421 is driven to extend and retract by a cylinder. When the first slide 411 and the second slide 412 move to the preset position, the cylinder drives the positioning fork 421 to cooperate with the positioning post 420 to achieve precise positioning. When it is necessary to move the first slide 411 and the second slide 412, the cylinder drives the positioning fork 421 to reset and separate from the positioning post 420.

[0061] In one specific embodiment, to shorten the time for vacuum breaking and vacuuming during material receiving and unloading, a material receiving sealing door 15 is provided at the opening of the feeding hopper 12. After the receiving lifting platform 121 rises and contacts the top of the feeding hopper 12, it forms a receiving chamber with the closed material receiving sealing door 15. Similarly, a material discharging sealing door 16 is provided at the opening of the discharging hopper 14. After the unloading lifting platform 141 rises and contacts the top of the discharging hopper 14, it forms an unloading chamber with the closed material discharging sealing door 16. The receiving chamber forms a small chamber independent of the feeding hopper 12 during material receiving, which shortens the time for vacuum breaking and vacuuming, improves feeding efficiency, and reduces energy consumption. Likewise, the unloading chamber forms a small chamber independent of the discharging hopper 14 during material feeding, thereby shortening the time for vacuum breaking and vacuuming, improving unloading efficiency, and reducing energy consumption.

[0062] To facilitate the opening and closing of the feed sealing door 15 and the discharge sealing door 16, the feed sealing door 15 and the discharge sealing door 16 are preferably opened and closed by horizontal sliding. In order to improve the sealing performance, when closing, pressure is applied by a cylinder or hydraulic cylinder to maintain airtightness. Before opening, the sealing door is raised to a certain height by a cylinder or hydraulic cylinder to separate it from the hopper opening and then slides horizontally.

[0063] Furthermore, a first counter-support assembly 50 is provided at the bottom of the receiving lifting platform 121. The first counter-support assembly 50 includes a first leveling column 51, a first reinforcing column 52, and a first pushing power component 53. One end of the first leveling column 51 is connected to the bottom of the receiving lifting platform 121, and the other end extends away from the bottom of the lifting platform. The first reinforcing column 52 is located below the first leveling column 51. The first pushing power component 53 drives the first reinforcing column 52 to separate from or contact the bottom of the first leveling column 51. Due to the large pressure difference between the top and bottom of the receiving lifting platform 121 after the vacuum in the receiving chamber is broken, when the receiving lifting platform 121 is raised, the first pushing power component 53 drives the first reinforcing column to contact the bottom of the first leveling column 51 to support the receiving lifting platform 121 and at the same time offset the pressure difference on the receiving lifting platform 121, thus preventing the receiving lifting platform 121 from deforming. When the receiving lifting platform 121 needs to be lowered, the first pushing power component 53 drives the first reinforcing column to reset and separate from the first climbing column, so as to prevent the first reinforcing column 52 from interfering with the descent of the receiving lifting platform 121. The first anti-support component 50 can appropriately reduce the thickness of the receiving lifting platform 121, leaving more space for the discharge bin 14 to perform other functions.

[0064] Similarly, a second counter-support assembly 60 is provided at the bottom of the material lifting platform 141. The second counter-support assembly 60 includes a second leveling column (not shown in the figure), a second reinforcing column (not shown in the figure), and a second pushing power component (not shown in the figure). One end of the second leveling column is connected to the bottom of the material lifting platform 141, and the other end extends away from the bottom of the platform. The second reinforcing column is located below the second leveling column. The second pushing power component drives the second reinforcing column to separate from or contact the bottom of the second leveling column. The second counter-support assembly 60 is used to support the material lifting platform 141 after it is raised to prevent deformation of the platform and to reserve more space for the discharge hopper 14.

[0065] Optionally, the first pushing power component 53 and the second pushing power component are one of a cylinder, a hydraulic cylinder, and a motor.

[0066] It should be noted that the number of the first anti-support component 50 and the second anti-support component 60 can be increased or decreased according to actual needs, and this application does not limit the specific number of the two.

[0067] Optionally, the receiving lifting platform 121 and the picking lifting platform 141 can be driven to lift by a motor, cylinder, or hydraulic cylinder. Meanwhile, to avoid interference between the power components driving the receiving lifting platform 121 and the operation of the adjusting assembly 32, the power components driving the receiving lifting platform 121 should be movably connected to the receiving lifting platform 121.

[0068] To prevent the circuit boards from shifting on the receiving lifting platform 121 and the picking lifting platform 141, thus affecting the accuracy of board handling and printing, clamp fixing assemblies 122 for fixing the circuit boards are provided on both the receiving lifting platform 121 and the picking lifting platform 141. The clamp fixing assembly 122 includes a first clamping plate 1221, a second clamping plate 1222, a first mounting bracket 1223, a second mounting bracket 1224, and a spacing adjustment power component 1225. The number of the first clamping plate 1221 and the second clamping plate is at least one, and the first clamping plate 1221 and the second clamping plate 1222 are arranged opposite to each other. The first clamping plate 1221 is mounted on the first mounting bracket 1223. The second clamping plate 1222 is mounted on the second mounting bracket 1224. The spacing adjustment power component 1225 is used to drive the first mounting bracket 1223 and the second mounting bracket to move closer or further apart from each other, thereby adjusting the spacing between the first clamping plate 1221 and the second clamping plate 1222 to correspond to the size of the circuit board.

[0069] Optionally, the clamp fixing assembly 122 is further provided with a lifting power component (not shown) for driving the first mounting bracket 1223 and the second mounting bracket 1224 to rise and fall. The lifting power component is preferably a cylinder, and the spacing adjustment power component 1225 is preferably a servo motor.

[0070] Optionally, the first clamping plate 1221 and the second clamping plate 1222 are one or more of rigid clamps, flexible clamps, or vacuum suction cups.

[0071] In one embodiment, the fully automatic vacuum plugging machine 100 of this application further includes a visual inspection mechanism 70 for detecting whether the printed circuit board is qualified. The visual inspection mechanism 70 includes a visual recognition component 71 and an alarm (not shown). The visual recognition component 71 is disposed above the receiving lifting platform 121, and the alarm is signal-connected to the visual recognition component 71. The visual recognition component 71 identifies whether the printed circuit board has been misaligned by comparing the printed circuit board image with a standard image. The visual inspection mechanism 70 can replace manual inspection of the printed circuit board, making the inspection more efficient. When printing misalignment occurs, the alarm can promptly remind the operator to make adjustments, avoiding greater losses.

[0072] Preferably, the visual recognition component 71 includes at least one set of CCD lenses.

[0073] Optionally, the alarm can be a sound alarm, a light alarm, or a combination of both.

[0074] To facilitate visual identification, a first transparent window (not shown in the figure) corresponding to the visual positioning component 31 is provided on the feed sealing door 15, and a second transparent window (not shown in the figure) corresponding to the visual recognition component 71 is provided on the discharge sealing door 16.

[0075] In one specific embodiment, to further improve printing efficiency and reduce worker workload, the fully automatic vacuum plugging machine 100 of this application further includes a loading robot 80 and a unloading robot 90. The loading robot 80 is located at the opening of the feeding bin 12 and is used to place the circuit board to be printed onto the receiving lifting platform 121. The unloading robot 90 is located at the opening of the discharging bin 14 and is used to remove the printed circuit board from the receiving lifting platform 121. By setting up the loading robot 80 and the unloading robot 90, automatic loading and unloading of circuit boards can be achieved, which is beneficial to realizing the automated production of vacuum plugging operations.

[0076] Optionally, the loading robot 80 and the unloading robot 90 can be one or more of a rigid gripping robot, a flexible gripping robot, or a vacuum adsorption robot.

[0077] Before printing, the printing worktable 131 is aligned and the positioning reference of the circuit board on the receiving lifting platform 121 is set. During alignment, the worker places the circuit board on the printing worktable 131, performs coarse positioning according to the screen frame position, inserts positioning pins after coarse positioning, and then performs precise positioning through the alignment mechanism 20 at the bottom of the printing worktable 131. After precise positioning, the locking component 24 locks the printing worktable 131, completing the positioning of the first board. Next, the loading positioning reference is calibrated: the first board transfer component 41 transfers the first circuit board from the printing worktable 131 back to the receiving lifting platform 121, and then the vision positioning component 31 takes a picture with the position of the first circuit board as the reference, thereby completing the positioning reference calibration of the circuit board on the receiving lifting platform 121.

[0078] After the alignment of the printing workbench 131 and the calibration of the material receiving positioning reference are completed, formal printing will proceed. First, all chamber doors will be closed and the vacuum chamber 11 will be evacuated (for circuit boards after the first board, vacuum breaking and vacuuming operations are required, i.e., when receiving the board, the material receiving lifting platform 121 needs to be raised to fit against the top of the feeding chamber 12, the first pushing power component 53 drives the first reinforcing column 52 to the bottom of the first equal-height column 51, then after the vacuum in the material receiving chamber is broken, the feeding sealing door 15 is opened, the loading robot 80 places the circuit board on the material receiving lifting platform 121, the clamp fixing assembly 122 on the material receiving lifting platform 121 clamps the circuit board, then the feeding sealing door 15 is closed and the material receiving chamber is evacuated. After the vacuuming is completed, the first The pusher 53 drives the first reinforcing column 52 to reset. After the receiving lifting platform 121 descends to the position, the first transfer plate assembly 41 transfers the first circuit board back to the printing worktable 131 for printing. After printing, the second transfer plate assembly 43 transfers the circuit board from the printing worktable 131 to the picking lifting platform 141 and clamps it with the clamp fixing assembly 122. The picking lifting platform 141 rises and fits against the top of the chamber. The second anti-support assembly moves to support the picking lifting platform 141. At the same time, the vision recognition assembly 71 checks the printed circuit board. If there is any deviation, an alarm is triggered. If there is no deviation, the operation continues. Then, after the vacuum in the picking chamber is broken, the discharge sealing door 16 is opened, and the unloading robot 90 takes away the printed circuit board. When printing the next circuit board, it is only necessary to position the circuit board on the receiving lifting platform 121 (that is, the positioning component 32 adjusts the position of the receiving lifting platform 121 according to the positioning point captured by the vision positioning component 31 so that the position of the circuit board coincides with the first board), without adjusting the position of the printing worktable 131, and repeat the above actions to carry out the continuous operation of circuit board printing.

[0079] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic vacuum plugging machine, comprising a frame (10), wherein a vacuum chamber (11) is provided inside the frame (10), and a feeding chamber (12), a printing chamber (13) and a discharging chamber (14) are arranged sequentially inside the vacuum chamber (11). A receiving lifting platform (121) is provided inside the feeding chamber (12), a printing workbench (131) and a printing mechanism (132) opposite to the printing workbench (131) are provided inside the printing chamber (131), and a material picking lifting platform (141) is provided inside the discharging chamber (14). The machine is characterized in that... Also includes: Alignment mechanism (20) is used to adjust the position of the printing worktable (131) so that the first circuit board on the printing worktable (131) corresponds to the frame of the printing mechanism (132); The feeding and positioning mechanism (30) includes a vision positioning component (31) and an adjustment component (32). The vision positioning component (31) is used to identify the position of the circuit board on the receiving lifting platform (121). The adjustment component (32) is signal-connected to the vision positioning component (31). The adjustment component (32) is used to adjust the position of the receiving lifting platform (121) so that the position of each circuit board on the receiving lifting platform (121) is consistent with the position of the first circuit board. The board transfer mechanism (40) includes a first board transfer assembly (41) and a second board transfer assembly (43). The first board transfer assembly (41) is used to transfer the circuit board between the receiving lifting platform (121) and the printing worktable (131). The second board transfer assembly (43) is used to transfer the circuit board from the printing worktable (131) to the picking lifting platform (141).

2. The fully automatic vacuum plugging machine according to claim 1, characterized in that, The alignment mechanism (20) includes a fixed base (21), an X-axis adjustment power component (22), and a Y-axis adjustment power component (23). The fixed base (21) is located at the bottom of the printing worktable (131). The printing worktable (131) is movably connected to the fixed base (21). The X-axis adjustment power component (22) connects the fixed base (21) and the printing worktable (131) to drive the printing worktable (131) to adjust its position in the X-axis relative to the fixed base (21). The Y-axis adjustment power component (23) connects the fixed base (21) and the printing worktable (131) to drive the printing worktable (131) to adjust its position in the Y-axis relative to the fixed base (21).

3. The fully automatic vacuum plugging machine according to claim 2, characterized in that, The alignment mechanism (20) further includes a locking component (24), which includes a pressure member (241), a friction member (242), and a locking power member (243). The friction member (242) is mounted on the printing worktable (131), the pressure member (241) is connected to the fixed base (21), and the locking power member (243) drives the pressure member (241) to separate or contact with the friction member (242).

4. The fully automatic vacuum plugging machine according to claim 1, characterized in that, The adjustment component (32) includes a base (321), an X-axis fine-tuning drive (322), and a Y-axis fine-tuning drive (324). The base (321) is located at the bottom of the receiving lifting platform (121), and the receiving lifting platform (121) is movably connected to the base (321). The X-axis fine-tuning drive (322) connects the base (321) and the receiving lifting platform (121) to drive the receiving lifting platform (121) to move relative to the base (321) in the X direction. The Y-axis fine-tuning drive (324) connects the base (321) and the receiving lifting platform (121) to drive the receiving lifting platform (121) to move relative to the base (321) in the Y direction.

5. The fully automatic vacuum plugging machine according to claim 1, characterized in that, The first transfer assembly (41) includes a first slide (411) and a second slide (412) disposed on opposite sides of the printing worktable (131), a lifting frame (413) connecting the first slide (411) and the second slide (412), and a first transverse seat (414) and a second transverse seat (415) slidably disposed on the lifting frame (413). The first slide (411) and the second slide (412) are driven by a transfer power component (417) to reciprocate between the receiving lifting platform (121) and the printing worktable (131). The lifting frame (413) is driven to lift by the lifting power component (418). The first transverse seat (414) is located at one end of the lifting frame (413) near the first slide (411), and the second transverse seat (415) is located at one end of the lifting frame (413) near the second slide (412). The first transverse seat (414) and the second transverse seat (415) are driven to move closer or further apart by the transverse force component (419). Both the first transverse seat (414) and the second transverse seat (415) are provided with clamping components (416).

6. The fully automatic vacuum plugging machine according to claim 1, characterized in that, The feed hopper (12) is equipped with a feed sealing door (15) at its opening. After the receiving lifting platform (121) rises and contacts the top of the feed hopper (12), it forms a receiving chamber with the closed feed sealing door (15). The discharge hopper (14) is equipped with a discharge sealing door (16). After the material picking platform (141) rises and contacts the top of the discharge hopper (14), it forms a material picking chamber with the closed discharge sealing door (16).

7. The fully automatic vacuum plugging machine according to claim 6, characterized in that, The bottom of the receiving lifting platform (121) is provided with a first anti-support component (50). The first anti-support component (50) includes a first level column (51), a first reinforcing column (52) and a first pushing power component (53). One end of the first level column (51) is connected to the bottom of the receiving lifting platform (121), and the other end extends away from the bottom of the lifting platform. The first reinforcing column (52) is located below the first level column (51). The first pushing power component (53) drives the first reinforcing column (52) to separate from or contact the bottom of the first level column (51).

8. The fully automatic vacuum plugging machine according to claim 6, characterized in that, The bottom of the material lifting platform (141) is provided with a second anti-support component (60). The second anti-support component (60) includes a second level column, a second reinforcing column and a second pushing power component. One end of the second level column is connected to the bottom of the material lifting platform (141), and the other end extends away from the bottom of the lifting platform. The second reinforcing column is located below the second level column. The second pushing power component drives the second reinforcing column to separate from or contact the bottom of the second level column.

9. The fully automatic vacuum plugging machine according to claim 1, characterized in that, It also includes a visual inspection mechanism (70) for detecting whether the printed circuit board is qualified. The visual inspection mechanism (70) includes a visual recognition component (71) and an alarm. The visual recognition component (71) is located above the receiving lifting platform (121), and the alarm is signal-connected to the visual recognition component (71).

10. The fully automatic vacuum plugging machine according to claim 1, characterized in that, It also includes a loading robot (80) and a unloading robot (90). The loading robot (80) is located at the opening of the feeding hopper (12) and is used to place the circuit board to be printed on the receiving lifting platform (121). The unloading robot (90) is located at the opening of the discharging hopper (14) and is used to remove the printed circuit board from the receiving lifting platform (121).

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