CCD (Charge Coupled Device) automatic pre-alignment inner-layer punching machine for PCB (Printed Circuit Board)

Abstract

The invention relates to the technical field of punching machines, and discloses a CCD automatic pre-alignment inner-layer punching machine for a PCB. The CCD automatic pre-alignment inner-layer punching machine comprises a bottom frame, a bottom plate is fixedly connected to the inner side face of the bottom frame, a top frame is fixedly connected to the upper portion of the bottom frame, a driving mechanism is arranged on the bottom face of the bottom plate, and a punching mechanism is arranged above the bottom plate; a supporting mechanism is arranged below the punching mechanism, and positioning mechanisms are arranged on the left side and the right side of the bottom plate correspondingly. The punching mechanism comprises a moving block, a hydraulic rod is fixedly connected to the bottom face of the moving block, a fixing plate is fixedly connected to the outer wall of the hydraulic rod, four vertical guide rods are fixedly connected to the upper surface of the fixing plate, a sliding plate is slidably connected to the outer surfaces of the vertical guide rods, and an inner cavity pressing rod is fixedly connected to the middle of the sliding plate. According to the automatic tin injection device, the follow-up tin injection step is simplified through automatic tin injection, and the element welding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of punching machines, and in particular to a CCD automatic pre-alignment inner layer punching machine for PCB. Background Art

[0002] A CCD automatic pre-alignment inner layer punching machine is a device specifically used in the PCB production process for automatically pre-aligning when punching the inner layer material. This device usually ensures the precise alignment of the hole positions, circuits, and patterns between the inner and outer layers of the PCB during production to improve production efficiency and the finished product rate. The automatic pre-alignment inner layer punching machine can effectively improve the precision and efficiency of PCB production and is one of the important devices in the modern PCB manufacturing process.

[0003] The patent with the publication number CN208305192U discloses an automatic adjustment device for the position of the pre-alignment camera of a PCB inner layer punching machine, including a support crossbeam, a slide rail, a slider, a stepping motor, a lead screw, a mounting seat, and a CCD pre-alignment camera assembly; the slide rail is installed on the support crossbeam, and the slider is slidably arranged on the slide rail; the output end of the stepping motor is connected to the lead screw, the lead screw passes through the mounting seat, the mounting seat is installed on the slider, and the CCD pre-alignment camera assembly is installed on the mounting seat. The structure of this patent is simple. By transforming and adding a stepping motor to the original adjustment device, and presetting the corresponding positions for each size in the software, the camera can automatically and accurately move to the required position at high speed. The operation is simple and the effect is good. However, there is a problem that the next tin-planting step cannot be carried out until all the materials are punched, which affects the processing efficiency. Therefore, a CCD automatic pre-alignment inner layer punching machine for PCB is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a CCD automatic pre-alignment inner layer punching machine for PCB aiming at the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: A CCD automatic pre-alignment inner layer punching machine for PCB, including a chassis, the inner side surface of the chassis is fixedly connected with a bottom plate, a top frame is fixedly connected above the chassis, a driving mechanism is arranged on the bottom surface of the bottom plate, a punching mechanism is arranged above the bottom plate, a supporting mechanism is arranged below the punching mechanism, and positioning mechanisms are arranged on both the left and right sides of the bottom plate; The punching mechanism includes a moving block. A hydraulic rod is fixedly connected to the bottom surface of the moving block. A fixed plate is fixedly connected to the outer wall of the hydraulic rod. Four vertical guide rods are fixedly connected to the upper surface of the fixed plate. A sliding plate is slidably connected to the outer surface of the vertical guide rods. An inner cavity pressing rod is fixedly connected to the middle position of the sliding plate. A punching cutter head is threadedly connected to the bottom end of the inner cavity pressing rod. Two chute plates are fixedly connected to the top surface of the sliding plate. An elastic limit block is slidably connected to the inner side of each chute plate. A touch pressure top plate is arranged on the side of the elastic limit block away from the chute plate.

[0006] According to the above technical solution, a pressure - applying ring is fixedly connected to the bottom surface of the touch pressure top plate. A solder melting cylinder is fixedly connected to the bottom surface of the sliding plate. A tin - injecting port is fixedly connected to the outer wall of the solder melting cylinder. A communicating pipe is fixedly connected to the inner wall of the solder melting cylinder. Pressure - applying groove rods are slidably connected to both sides of the sliding plate.

[0007] According to the above technical solution, a rigid spring is arranged between the elastic limit block and the chute plate, and both ends of the rigid spring are fixedly connected to the chute plate and the elastic limit block respectively. The pressure - applying ring is slidably connected to the solder melting cylinder. The pressure - applying ring extends upward to form a blocking block, and the blocking block is slidably connected to the solder melting cylinder and corresponds to the position of the tin - injecting port. The bottom end of the communicating pipe is connected to the inside of the inner cavity pressing rod. When the hydraulic rod extends downward, it will push the connected inner cavity pressing rod downward. The inner cavity pressing rod drives the connected sliding plate to move vertically along the vertical guide rods. At this time, the touch pressure top plate contacts the elastic limit block, causing the elastic limit block to hinder the downward movement of the touch pressure top plate under the action of the rigid spring. At this time, the solder melting cylinder connected to the sliding plate moves downward relative to the touch pressure top plate until the top surface of the pressure - applying ring connected to the touch pressure top plate moves to the top of the solder melting cylinder. At this time, the solder melting cylinder applies a downward pulling force on the touch pressure top plate through the pressure - applying ring, and makes the touch pressure top plate move downward to squeeze the inclined surface of the elastic limit block. The elastic limit block is pressed and squeezes the rigid spring and slides along the inner side of the chute plate. At this time, the pressure - applying ring no longer blocks the tin - injecting port, and solder paste is replenished through the tin - injecting port. As the punching cutter head connected to the inner cavity pressing rod moves downward to punch the inner layer board, after punching is completed, the hydraulic rod contracts to drive the inner cavity pressing rod to move upward. At this time, the touch pressure top plate moves upward with the inner cavity pressing rod and abuts against the lower part of the elastic limit block. The touch pressure top plate drives the pressure - applying ring to move downward along the solder melting cylinder and block the tin - injecting port, squeezing the solder paste into the inside of the inner cavity pressing rod through the communicating pipe, and then extruding the solder paste through the punching cutter head connected to the inner cavity pressing rod and filling it into the punched hole. By controlling the rising height of the punching cutter head.

[0008] According to the above technical solution, the driving mechanism includes two driving motors. At the end of the output shaft of each driving motor, a threaded rod is fixedly connected. A transverse shaft screw block is threadedly connected to the outside of the transverse threaded rod. At one end of each threaded rod away from the driving motor, a positioning shaft seat is rotatably connected. A longitudinal shaft coupling block is threadedly connected to the outside of the longitudinal threaded rod. The side of the longitudinal shaft coupling block is rotatably connected to a transverse shaft sliding rod. The side of the transverse shaft screw block is fixedly connected to a longitudinal shaft sliding rod. One end of the transverse shaft sliding rod away from the longitudinal shaft coupling block is fixedly connected to a slide rail connecting block.

[0009] According to the above technical solution, the top of the slide rail connecting block is fixedly connected to a double-arm frame. The top surface of the transverse shaft screw block is fixedly connected to a single-arm frame. Suspension sliding rods are fixedly connected to the tops of both the double-arm frame and the single-arm frame. A vertical connecting rod slides at the bottom of the single-arm frame. The bottom end of the vertical connecting rod is hingedly connected to an upward turning hinge rod. The bottom end of the upward turning hinge rod is hingedly connected to a lower hinge rod. A chute folding plate is fixedly connected to the bottom surface of the single-arm frame.

[0010] According to the above technical solution, the bottom end of the upward turning hinge rod is slidably connected to the chute folding plate. The top end of the vertical connecting rod is fixedly connected to a pressure groove rod. The rotation of the output shafts of the two driving motors respectively drives the rotation of the connected transverse threaded rod and the longitudinal threaded rod. The transverse threaded rod drives the transverse shaft screw block to move, and the transverse shaft screw block drives the connected longitudinal shaft sliding rod to move. The longitudinal threaded rod drives the longitudinal shaft coupling block to move, which will make the longitudinal shaft coupling block drive the connected transverse shaft sliding rod to move. By the movement of the transverse shaft sliding rod, the overall longitudinal coordinate of the support mechanism is changed. The movement of the longitudinal shaft sliding rod changes the overall transverse coordinate of the support mechanism. The longitudinal movement of the transverse shaft sliding rod drives the slide rail connecting block, making the double-arm frame connected to the slide rail connecting block move back and forth and keep in sync with the lower transverse shaft sliding rod. The movement of the longitudinal shaft sliding rod drives the single-arm frame to move left and right through the transverse shaft screw block. Through the movement cooperation of the single-arm frame and the double-arm frame, the connected double-arm frame is driven to change the coordinate position of the entire punching mechanism, so as to flexibly change the drilling position, and cooperate with the support mechanism below the punching mechanism to provide support. Through the above structure, it is convenient to adjust the punching position after punching, so as to freely expand the air flow upward at the bottom of the chassis to drive the air flow to cool the tin subsequently, or to supplement the light source at the bottom of the chassis to facilitate the calibration and detection of the punching holes on the inner layer board by the camera module on the top frame.

[0011] According to the above technical solution, the support mechanism includes a slide rail frame. A slide rail ring is slidably connected to the outside of the slide rail frame. The top of the slide rail ring is fixedly connected to a lifting arc rod. A displacement cylinder block is slidably connected to the outside of the lifting arc rod. A fixed pipe plate is fixedly connected to the outside of the displacement cylinder block. Four air pressure cylinders are fixedly connected to the upper surface of the fixed pipe plate. A piston is slidably connected to the inner wall of each air pressure cylinder. The top of the piston is fixedly connected to a connecting plug pipe. A suction cup is fixedly connected to the top of the connecting plug pipe. The top of the lifting arc rod is fixedly connected to a support plate. A rubber gasket is fixedly connected to the top surface of the support plate.

[0012] According to the above technical solution, the slide rail frame is hinged to the pressure application groove rod, the displacement cylinder block is slidably connected to the vertical axis slide rod, the displacement cylinder block is slidably connected to the horizontal axis slide rod, the connecting plug tube is slidably connected to the air pressure cylinder, the connecting plug tube is communicated with the air pressure cylinder through a piston, and the suction cup is fixedly connected to the support plate. When the slide plate moves downward along the vertical guide rod, the pressure application groove rod is driven to move downward through the slide plate, so that while the pressure application groove rod slides downward along the side surface of the single-arm frame, the vertical connecting rod is pushed to move. The vertical connecting rod pushes the connected turning-up hinge rod to slide along the chute folding plate. At this time, the hinge joint of the chute folding plate and the lower hinge rod slides along the chute folding plate. The turning-up hinge rod will pull the hinged slide rail frame to drive the slide rail ring to push the lifting arc rod to slide relative to the displacement cylinder block. The upward movement of the lifting arc rod will drive the suction cup connected to the support plate to approach the bottom surface of the inner layer plate, and the rubber gasket on the support plate will be attached to the inner layer plate. The connecting plug tube connected to the suction cup is pulled upward to drive the piston to move upward, so that the piston sucks air through the suction cup connected to the connecting plug tube at the bottom. When the suction cup is completely attached to the inner layer plate, the piston continues to move upward to reduce the air pressure inside the air pressure cylinder, thereby sucking the inner layer plate.

[0013] According to the above technical solution, the positioning mechanism includes a chute block, the chute block is slidably connected to the upper surface of the chassis, the top surface of the chute block is slidably connected with a lifting groove bar, the bottom surface of the lifting groove bar is fixedly connected with a vertical pressure rod, the bottom end of the vertical pressure rod is fixedly connected with a limit post, and the inner bottom surface of the lifting groove bar is fixedly connected with an arc-shaped rubber strip. The bottom surface of the chassis is fixedly connected with a limit tooth groove. When placing the inner layer plate, it is necessary to manually adjust the distance between the two lifting groove bars, and then insert the edge of the inner layer plate under the arc-shaped rubber strip in the lifting groove bar. The inner layer plate edge is positioned by the deformation of the arc-shaped rubber strip. When the suction cup connected to the support plate pushes the inner layer plate upward, the inner layer plate above the suction cup is driven upward. At this time, the lifting groove bar connected to the inner layer plate also moves upward with it. The limit post is driven by the vertical pressure rod connected to the lifting groove bar to be stuck in the limit post.

[0014] The present invention adopts the above technical solution, and can bring the following beneficial effects: 1. For the CCD automatic pre-alignment inner layer punching machine for PCB, by controlling the rising height of the punching tool head and adjusting whether the touch pressure top plate contacts the elastic limit block during the rising process, it is possible to control whether tin is implanted at the punching position of the punching tool head. At the same time, the subsequent tin injection steps are simplified through automatic tin injection, and the component welding efficiency is improved.

[0015] 2. The CCD automatic pre-alignment inner layer punching machine for PCB drives the connected double-arm frame to change the overall coordinate position of the punching mechanism through the movement cooperation of the single-arm frame and the double-arm frame, so as to flexibly change the drilling position, and cooperates with the support mechanism below the punching mechanism to provide support. Through the above structure, it is convenient to adjust the punching position after punching, so as to freely expand the air-cooling upward circulation at the bottom of the chassis to drive air flow to cool the tin later, or to supplement light sources at the bottom of the chassis to facilitate the calibration and detection of the punching hole positions of the inner layer board by the camera module on the top frame.

[0016] 3. The CCD automatic pre-alignment inner layer punching machine for PCB locates and strengthens the inner layer board on the rubber gasket through the adsorption of the suction cup, reduces the impact force of the inner layer board by single-point stamping, and avoids the deformation and cracking of the board at the stamping place. At the same time, the position of the displacement cylinder block is synchronized with the punching cutter head to provide support during drilling and facilitate the collection of waste generated by punching.

[0017] 4. The CCD automatic pre-alignment inner layer punching machine for PCB drives the limit post to be stuck in the limit post by the vertical pressure rod connected by the lifting top groove bar, so as to prevent the inner layer board from being displaced due to mechanical vibration during the stamping process, which affects the punching accuracy. Description of the Drawings

[0018] Figure 1 It is a front three-dimensional structure schematic diagram of the whole invention; Figure 2 It is a rear three-dimensional structure schematic diagram of the whole invention; Figure 3 It is a structure schematic diagram of the driving mechanism of the invention; Figure 4 It is a structure schematic diagram of the punching mechanism of the invention; Figure 5 For the invention Figure 4 The enlarged structure schematic diagram of A in; Figure 6 It is a structure schematic diagram of the support mechanism of the invention; Figure 7 For the invention Figure 6 The enlarged structure schematic diagram of B in; Figure 8 For the invention Figure 6 The enlarged structure schematic diagram of C in; Figure 9 It is a structure schematic diagram of the slide rail frame connection of the invention; Figure 10 It is a structure schematic diagram of the positioning mechanism of the invention.

[0019] In the figure: 1. Underframe; 2. Bottom plate; 3. Top frame; 4. Driving mechanism; 41. Driving motor; 42. Threaded rod; 43. Horizontal axis screw block; 44. Positioning shaft seat; 45. Vertical axis slide bar; 46. Horizontal axis slide bar; 47. Slide rail connecting block; 48. Vertical axis connecting block; 49. Double-arm frame; 410. Suspension slide bar; 411. Single-arm frame; 412. Chute folding plate; 413. Vertical connecting rod; 414. Flipping upper hinge rod; 415. Lower hinge rod; 5. Punching mechanism; 51. Moving block; 52. Hydraulic rod; 53. Fixed plate; 54. Vertical guide rod; 55. Slide plate; 56. Chute plate; 57. Elastic limit block; 58. Touching pressure top plate; 59. Pressing ring; 510. Tin melting cylinder; 511. Tin injection port; 512. Connecting pipe; 513. Inner cavity pressure rod; 514. Punching cutter head; 515. Pressing groove rod; 6. Supporting mechanism; 61. Slide rail frame; 62. Slide rail ring; 63. Lifting arc rod; 64. Pipe fixing plate; 65. Pneumatic cylinder; 66. Piston; 67. Connecting piston pipe; 68. Suction cup; 69. Rubber gasket; 610. Support plate; 611. Displacement cylinder block; 7. Positioning mechanism; 71. Chute block; 72. Vertical pressure rod; 73. Lifting top groove bar; 74. Arc-shaped rubber strip; 75. Limit post; 76. Limit tooth groove. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1 - Figure 10 As shown in [figure number], an embodiment of the present invention is: A CCD automatic pre-aligning inner layer punching machine for PCB, including an underframe 1, a bottom plate 2 is fixedly connected to the inner side surface of the underframe 1, a top frame 3 is fixedly connected above the underframe 1, a driving mechanism 4 is arranged on the bottom surface of the bottom plate 2, a punching mechanism 5 is arranged above the bottom plate 2, a supporting mechanism 6 is arranged below the punching mechanism 5, and positioning mechanisms 7 are arranged on both the left and right sides of the bottom plate 2; The punching mechanism 5 includes a moving block 51. A hydraulic rod 52 is fixedly connected to the bottom surface of the moving block 51. A fixing plate 53 is fixedly connected to the outer wall of the hydraulic rod 52. Four vertical guide rods 54 are fixedly connected to the upper surface of the fixing plate 53. A sliding plate 55 is slidably connected to the outer surface of the vertical guide rods 54. An inner cavity pressing rod 513 is fixedly connected to the middle position of the sliding plate 55. A punching cutter head 514 is threadedly connected to the bottom end of the inner cavity pressing rod 513. Two chute plates 56 are fixedly connected to the top surface of the sliding plate 55. An elastic limiting block 57 is slidably connected to the inner side of each chute plate 56. A touch pressure top plate 58 is arranged on the side of the elastic limiting block 57 away from the chute plate 56. A pressing ring 59 is fixedly connected to the bottom surface of the touch pressure top plate 58. A soldering tin cylinder 510 is fixedly connected to the bottom surface of the sliding plate 55. A tin injection port 511 is fixedly connected to the outer wall of the soldering tin cylinder 510. A connecting pipe 512 is fixedly connected to the inner wall of the soldering tin cylinder 510. Pressure application groove rods 515 are slidably connected to both sides of the sliding plate 55. A rigid spring is arranged between the elastic limiting block 57 and the chute plate 56, and both ends of the rigid spring are fixedly connected to the chute plate 56 and the elastic limiting block 57 respectively. The pressing ring 59 is slidably connected to the soldering tin cylinder 510. The pressing ring 59 extends upward to form a stop block, and the stop block is slidably connected to the soldering tin cylinder 510, and the stop block corresponds to the position of the tin injection port 511. The bottom end of the connecting pipe 512 is connected to the inside of the inner cavity pressing rod 513. When the hydraulic rod 52 extends downward, it will push the connected inner cavity pressing rod 513 downward. The inner cavity pressing rod 513 moves vertically along the vertical guide rods 54 through the connected sliding plate 55. At this time, the touch pressure top plate 58 contacts the elastic limiting block 57, so that the elastic limiting block 57 hinders the downward movement of the touch pressure top plate 58 under the action of the rigid spring. At this time, the soldering tin cylinder 510 connected to the sliding plate 55 moves downward and has a relative displacement with the touch pressure top plate 58 until the top surface of the pressing ring 59 connected to the touch pressure top plate 58 moves to the top end of the soldering tin cylinder 510. At this time, the soldering tin cylinder 510 exerts a downward pulling force on the touch pressure top plate 58 through the pressing ring 59, and makes the touch pressure top plate 58 move downward to squeeze the inclined surface of the elastic limiting block 57. After being pressed, the elastic limiting block 57 presses the rigid spring and slides along the inner side of the chute plate 56. At this time, the pressing ring 59 no longer blocks the tin injection port 511, and solder paste is replenished through the tin injection port 511. As the punching cutter head 514 connected to the inner cavity pressing rod 513 moves downward to punch the inner layer board, after punching is completed, the hydraulic rod 52 contracts to drive the inner cavity pressing rod 513 to move upward. At this time, the touch pressure top plate 58 moves upward with the inner cavity pressing rod 513 and abuts against the lower part of the elastic limiting block 57. The touch pressure top plate 58 drives the pressing ring 59 to move downward along the soldering tin cylinder 510 and block the tin injection port 511 to squeeze the solder paste into the inside of the inner cavity pressing rod 513, and then the solder paste is extruded by the punching cutter head 514 connected to the inner cavity pressing rod 513 and filled into the punched holes. By controlling the rising height of the punching cutter head 514, it is adjusted to control whether the touch pressure top plate 58 contacts the elastic limiting block 57 during the rising process to control whether tin is planted at the punching position of the punching cutter head 514. At the same time, the subsequent tin injection steps are simplified through automatic tin injection, and the component soldering efficiency is improved.

[0022] The drive mechanism 4 includes two drive motors 41. At the end of the output shaft of each drive motor 41, a threaded rod 42 is fixedly connected. A transverse shaft screw block 43 is threadedly connected to the outside of the transverse threaded rod 42. At one end of each threaded rod 42 away from the drive motor 41, a positioning shaft seat 44 is rotatably connected. A longitudinal shaft coupling block 48 is threadedly connected to the outside of the longitudinal threaded rod 42. A transverse shaft slide rod 46 is rotatably connected to the side of the longitudinal shaft coupling block 48. A longitudinal shaft slide rod 45 is fixedly connected to the side of the transverse shaft screw block 43. At the end of the transverse shaft slide rod 46 away from the longitudinal shaft coupling block 48, a slide rail connecting block 47 is fixedly connected. At the top of the slide rail connecting block 47, a double-arm frame 49 is fixedly connected. At the top surface of the transverse shaft screw block 43, a single-arm frame 411 is fixedly connected. Suspension slide rods 410 are fixedly connected to the tops of both the double-arm frame 49 and the single-arm frame 411. A vertical connecting rod 413 is slidably connected to the bottom of the single-arm frame 411. At the bottom end of the vertical connecting rod 413, a flipping-up hinge rod 414 is hingedly connected. At the bottom end of the flipping-up hinge rod 414, a lower hinge rod 415 is hingedly connected. A chute folding plate 412 is fixedly connected to the bottom surface of the single-arm frame 411.

[0023] The bottom end of the flipping-up hinge rod 414 is slidably connected to the chute folding plate 412. The top end of the vertical connecting rod 413 is fixedly connected to the pressure groove rod 515. The rotation of the output shafts of the two drive motors 41 respectively drives the rotation of the connected transverse threaded rod 42 and the longitudinal threaded rod 42. The transverse threaded rod 42 drives the transverse shaft screw block 43 to move, and the transverse shaft screw block 43 drives the connected longitudinal shaft slide rod 45 to move. The longitudinal threaded rod 42 drives the longitudinal shaft coupling block 48 to move, which will make the longitudinal shaft coupling block 48 drive the connected transverse shaft slide rod 46 to move. By the movement of the transverse shaft slide rod 46, the overall longitudinal coordinate of the support mechanism 6 is changed. The movement of the longitudinal shaft slide rod 45 changes the overall transverse coordinate of the support mechanism 6. The longitudinal movement of the transverse shaft slide rod 46 drives the slide rail connecting block 47, so that the double-arm frame 49 connected to the slide rail connecting block 47 moves back and forth and is synchronized with the lower transverse shaft slide rod 46. The movement of the longitudinal shaft slide rod 45 drives the single-arm frame 411 to move left and right through the transverse shaft screw block 43. Through the movement cooperation of the single-arm frame 411 and the double-arm frame 49, the connected double-arm frame 49 is driven to change the overall coordinate position of the punching mechanism 5, so as to flexibly change the drilling position, and cooperate with the support mechanism 6 below the punching mechanism 5 to provide support. Through the above structure, it is convenient to adjust the punching position after punching, so as to freely expand the upward flow of air-cooled air at the bottom of the chassis 1 to drive air flow to cool the tin later, or to supplement light sources at the bottom of the chassis 1 to facilitate the calibration and detection of the punching holes of the inner layer board by the camera module on the top frame 3.

[0024] The support mechanism 6 includes a slide rail frame 61. A slide rail ring 62 is slidably connected to the outside of the slide rail frame 61. The top end of the slide rail ring 62 is fixedly connected to a lifting arc rod 63. A displacement cylinder block 611 is slidably connected to the outside of the lifting arc rod 63. A fixed pipe plate 64 is fixedly connected to the outside of the displacement cylinder block 611. Four air pressure cylinders 65 are fixedly connected to the upper surface of the fixed pipe plate 64. A piston 66 is slidably connected to the inner wall of each air pressure cylinder 65. The top end of the piston 66 is fixedly connected to a connecting plug pipe 67. The top end of the connecting plug pipe 67 is fixedly connected to a suction cup 68. The top end of the lifting arc rod 63 is fixedly connected to a support plate 610. A rubber gasket 69 is fixedly connected to the top surface of the support plate 610. The slide rail frame 61 is hingedly connected to the pressure application groove rod 515. The displacement cylinder block 611 is slidably connected to the longitudinal axis slide rod 45. The displacement cylinder block 611 is slidably connected to the transverse axis slide rod 46. The connecting plug pipe 67 is slidably connected to the air pressure cylinder 65. The connecting plug pipe 67 is communicated with the air pressure cylinder 65 through the piston 66. The suction cup 68 is fixedly connected to the support plate 610. When the slide plate 55 moves downward along the vertical guide rod 54, the pressure application groove rod 515 is driven to move downward through the slide plate 55, so that while the pressure application groove rod 515 slides downward along the side surface of the single-arm frame 411, the vertical connecting rod 413 is pushed to move. The vertical connecting rod 413 pushes the connected turning-up hinge rod 414 to slide along the chute folding plate 412. At this time, the hinge joint between the chute folding plate 412 and the lower hinge rod 415 slides along the chute folding plate 412. The turning-up hinge rod 414 will pull the hinged slide rail frame 61 to drive the slide rail ring 62 to push the lifting arc rod 63 to slide relative to the displacement cylinder block 611. The upward movement of the lifting arc rod 63 will drive the suction cup 68 connected to the support plate 610 to approach the bottom surface of the inner layer plate, and the inner layer plate will be attached through the rubber gasket 69 on the support plate 610. The upward movement of the piston 66 is driven by pulling the connecting plug pipe 67 connected to the suction cup 68, so that the air in the suction cup 68 connected to the bottom of the piston 66 through the connecting plug pipe 67 is pumped out. When the suction cup 68 is completely attached to the inner layer plate, the piston 66 continues to move upward to reduce the air pressure inside the air pressure cylinder 65, thereby sucking the inner layer plate. The inner layer plate on the rubber gasket 69 is positioned and reinforced through the adsorption of the suction cup 68, reducing the impact force of the single-point stamping on the inner layer plate and avoiding the deformation and cracking of the plate at the stamping position. At the same time, the displacement cylinder block 611 is synchronized with the position of the punching cutter head 514 to provide support during drilling and facilitate the collection of the waste generated by punching.

[0025] The positioning mechanism 7 includes a chute block 71 which is slidably connected to the upper surface of the chassis 1. A lifting groove bar 73 is slidably connected to the top surface of the chute block 71. A vertical pressure rod 72 is fixedly connected to the bottom surface of the lifting groove bar 73. A limit post 75 is fixedly connected to the bottom end of the vertical pressure rod 72. An arc-shaped rubber strip 74 is fixedly connected to the inner bottom surface of the lifting groove bar 73. A limit tooth groove 76 is fixedly connected to the bottom surface of the chassis 1. When placing the inner layer board, it is necessary to manually adjust the distance between the two lifting groove bars 73, and then insert the edge of the inner layer board under the arc-shaped rubber strip 74 in the lifting groove bar 73. The deformation of the arc-shaped rubber strip 74 is used to squeeze and position the edge of the inner layer board. When the suction cups 68 connected to the support plate 610 push the inner layer board upward, the inner layer board above the suction cups 68 is driven upward. At this time, the lifting groove bar 73 connected to the inner layer board also moves upward with it. The vertical pressure rod 72 connected to the lifting groove bar 73 drives the limit post 75 to be stuck in the limit post 75, so as to prevent the inner layer board from shifting due to mechanical vibration during the stamping process of the inner layer board, which affects the punching accuracy.

[0026] Working principle: The output shafts of the two driving motors 41 rotate to drive the connected horizontal threaded rod 42 and the vertical threaded rod 42 to rotate respectively. The horizontal threaded rod 42 drives the horizontal shaft screw block 43 to move, and the horizontal shaft screw block 43 drives the connected vertical shaft slide rod 45 to move. The vertical threaded rod 42 of the vertical shaft drives the vertical shaft coupling block 48 to move, which will cause the vertical shaft coupling block 48 to drive the connected horizontal shaft slide rod 46 to move. By the movement of the horizontal shaft slide rod 46, the overall longitudinal coordinate of the support mechanism 6 is changed. The movement of the vertical shaft slide rod 45 changes the overall horizontal coordinate of the support mechanism 6. The longitudinal movement of the horizontal shaft slide rod 46 drives the slide rail connecting block 47, so that the double-arm frame 49 connected to the slide rail connecting block 47 moves back and forth and is synchronized with the lower horizontal shaft slide rod 46. The movement of the vertical shaft slide rod 45 drives the single-arm frame 411 to move left and right through the horizontal shaft screw block 43. Through the movement cooperation of the single-arm frame 411 and the double-arm frame 49, the connected double-arm frame 49 changes the overall coordinate position of the punching mechanism 5, so as to flexibly change the drilling position, and cooperate with the support mechanism 6 below the punching mechanism 5 to provide support. Through the above structure, it is convenient to adjust the punching position after punching, so as to freely expand the air-cooling upward flow at the bottom of the chassis 1 to drive air flow to cool the tin subsequently, or to supplement light sources at the bottom of the chassis 1 to facilitate the calibration and detection of the punching holes of the inner layer board by the camera module on the top frame 3. When the hydraulic rod 52 extends downward, it will push the connected inner cavity pressure rod 513 downward. The inner cavity pressure rod 513 moves vertically along the vertical guide rod 54 through the connected slide plate 55. At this time, the touch pressure top plate 58 contacts the elastic limit block 57, causing the elastic limit block 57 to hinder the downward movement of the touch pressure top plate 58 under the action of the rigid spring. At this time, the soldering tin cylinder 510 connected to the slide plate 55 moves downward relative to the touch pressure top plate 58 until the top surface of the pressure - applying ring 59 connected to the touch pressure top plate 58 moves to the top of the soldering tin cylinder 510. At this time, the soldering tin cylinder 510 exerts a downward pulling force on the touch pressure top plate 58 through the pressure - applying ring 59, and makes the touch pressure top plate 58 move downward to squeeze the inclined surface of the elastic limit block 57. After being compressed, the elastic limit block 57 squeezes the rigid spring and slides along the inner side of the chute plate 56. At this time, the pressure - applying ring 59 no longer blocks the tin - injection port 511, and solder paste is replenished through the tin - injection port 511. As the punching cutter head 514 connected to the inner cavity pressure rod 513 moves downward to punch the inner layer board, after the punching is completed, the hydraulic rod 52 contracts and drives the inner cavity pressure rod 513 to move upward. At this time, the touch pressure top plate 58 moves upward with the inner cavity pressure rod 513 and abuts against the lower part of the elastic limit block 57. The touch pressure top plate 58 drives the pressure - applying ring 59 to move downward along the soldering tin cylinder 510 and block the tin - injection port 511, and squeezes the solder paste into the interior of the inner cavity pressure rod 513 through the connecting pipe 512. Then, the punching cutter head 514 connected to the inner cavity pressure rod 513 extrudes and fills it into the punched hole. By controlling the rising height of the punching cutter head 514, it is possible to control whether the touch pressure top plate 58 contacts the elastic limit block 57 during the rising process to control whether tin is implanted at the punching position of the punching cutter head 514. At the same time, the subsequent tin - injection steps are simplified through automatic tin - injection, improving the component soldering efficiency; When the slide plate 55 moves downward along the vertical guide rod 54, it drives the pressure - applying groove rod 515 to move downward through the slide plate 55. While the pressure - applying groove rod 515 slides downward along the side surface of the single - arm frame 411, it pushes the vertical connecting rod 413 to move. The vertical connecting rod 413 pushes the connected turning - up hinge rod 414 to slide along the chute folding plate 412. At this time, the hinge joint of the chute folding plate 412 and the lower hinge rod 415 slides along the chute folding plate 412. The turning - up hinge rod 414 will pull the connected slide rail frame 61 to drive the slide rail ring 62 to push the lifting arc rod 63 to slide relative to the displacement cylinder block 611. When the lifting arc rod 63 moves upward, it will drive the suction cup 68 connected to the support plate 610 to approach the bottom surface of the inner layer board, and the rubber gasket 69 on the support plate 610 fits the inner layer board. By pulling up the connecting plug tube 67 connected to the suction cup 68, the piston 66 is driven to move upward, so that the bottom of the piston 66 evacuates air through the suction cup 68 connected to the connecting plug tube 67. When the suction cup 68 completely fits the inner layer board, the piston 66 continues to move upward, reducing the internal air pressure of the air pressure cylinder 65 to suck the inner layer board. The inner layer board on the rubber gasket 69 is positioned and reinforced through the adsorption of the suction cup 68, reducing the impact force of the inner layer board under single - point stamping and avoiding the deformation and cracking of the sheet material at the stamping position. At the same time, the position of the displacement cylinder block 611 is synchronized with that of the punching cutter head 514 to provide support during drilling and facilitate the collection of waste generated by punching; When placing the inner layer board, it is necessary to manually adjust the distance between the two lifting groove bars 73, and then insert the edge of the inner layer board under the arc-shaped rubber strip 74 in the lifting groove bar 73. The deformation of the arc-shaped rubber strip 74 is used to squeeze and position the edge of the inner layer board. When the suction cup 68 connected to the support plate 610 moves upward against the inner layer board, the inner layer board above the suction cup 68 is driven upward. At this time, the lifting groove bar 73 connected to the inner layer board also moves upward with it. The vertical pressure rod 72 connected to the lifting groove bar 73 drives the limit post 75 to be stuck in the limit post 75, thereby preventing the inner layer board from being displaced due to mechanical vibration during the stamping process of the inner layer board and affecting the punching accuracy.

[0027] The present invention provides a CCD automatic pre-alignment inner layer punching machine for PCB. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented by existing technologies.

Claims

1. A CCD automatic pre-alignment inner layer punching machine for PCB, comprising a base frame (1), characterized in that: The inner side surface of the bottom frame (1) is fixedly connected to a bottom plate (2), the top of the bottom frame (1) is fixedly connected to a top frame (3), the bottom surface of the bottom plate (2) is provided with a driving mechanism (4), the top of the bottom plate (2) is provided with a punching mechanism (5), the bottom of the punching mechanism (5) is provided with a supporting mechanism (6), and the left and right sides of the bottom plate (2) are both provided with positioning mechanisms (7); The punching mechanism (5) comprises a moving block (51), the bottom surface of the moving block (51) is fixedly connected to a hydraulic rod (52), the outer wall of the hydraulic rod (52) is fixedly connected to a fixed plate (53), the upper surface of the fixed plate (53) is fixedly connected to four vertical guide rods (54), the outer surface of the vertical guide rod (54) is slidably connected to a slide plate (55), the middle position of the slide plate (55) is fixedly connected to an inner cavity pressure rod (513), the bottom end of the inner cavity pressure rod (513) is threadedly connected to a punching cutter head (514), and the top surface of the slide plate (55) is fixedly connected to two slide groove plates (56), the inner side of each slide groove plate (56) is slidably connected to an elastic limit block (57), and a contact pressure top plate (58) is provided on the side of the elastic limit block (57) away from the slide groove plate (56).

2. The CCD automatic pre-alignment inner layer punching machine for PCB according to claim 1, characterized in that: The bottom surface of the contact pressure top plate (58) is fixedly connected to a pressure ring (59), the bottom surface of the slide plate (55) is fixedly connected to a tin melting cylinder (510), the outer wall of the tin melting cylinder (510) is fixedly connected to a tin injection port (511), the inner wall of the tin melting cylinder (510) is fixedly connected to a connecting pipe (512), and both sides of the slide plate (55) are slidably connected to pressure groove rods (515).

3. The CCD automatic pre-alignment inner layer punching machine for PCB according to claim 2, characterized in that: A rigid spring is provided between the elastic limit block (57) and the slide plate (56), and the two ends of the rigid spring are fixedly connected to the slide plate (56) and the elastic limit block (57) respectively. The pressure ring (59) is slidably connected to the molten tin cylinder (510). The pressure ring (59) extends upwardly to form a stopper, and the stopper is slidably connected to the molten tin cylinder (510), and the stopper corresponds to the position of the tin injection port (511). The bottom end of the connecting tube (512) is connected to the inside of the inner cavity pressure rod (513).

4. The CCD automatic pre-alignment inner layer punching machine for PCB according to claim 1, characterized in that: The driving mechanism (4) comprises two driving motors (41), the output shaft end of each driving motor (41) is fixedly connected to a threaded rod (42), the outer side of the transverse threaded rod (42) is threadedly connected to a transverse axis screw block (43), one end of each threaded rod (42) away from the driving motor (41) is rotatably connected to a positioning shaft seat (44), the outer side of the threaded rod (42) in the longitudinal direction is threadedly connected to a longitudinal axis coupling block (48), the side of the longitudinal axis coupling block (48) is rotatably connected to a transverse axis slide rod (46), the side of the transverse axis screw block (43) is fixedly connected to a longitudinal axis slide rod (45), and one end of the transverse axis slide rod (46) away from the longitudinal axis coupling block (48) is fixedly connected to a slide rail connecting block (47).

5. The CCD automatic pre-alignment inner layer punching machine for PCB according to claim 4, characterized in that: The top of the slide rail connecting block (47) is fixedly connected to a double-arm frame (49), the top surface of the transverse axis screw block (43) is fixedly connected to a single-arm frame (411), the tops of the double-arm frame (49) and the single-arm frame (411) are fixedly connected to a suspension slide rod (410), the bottom of the single-arm frame (411) is slidably connected to a vertical connecting rod (413), the bottom end of the vertical connecting rod (413) is hingedly connected to a flip-up hinge rod (414), the bottom end of the flip-up hinge rod (414) is hingedly connected to a lower hinge rod (415), and the bottom surface of the single-arm frame (411) is fixedly connected to a slide groove folding plate (412).

6. The CCD automatic pre-alignment inner layer punching machine for PCB according to claim 5, characterized in that: The bottom end of the upward hinge rod (414) is slidably connected to the slide groove folding plate (412), and the top end of the vertical connecting rod (413) is fixedly connected to the pressure groove rod (515).

7. The CCD automatic pre-alignment inner layer punching machine for PCB according to claim 1, characterized in that: The support mechanism (6) comprises a slide rail frame (61), the outer side of the slide rail frame (61) is slidably connected to a slide rail ring (62), the top of the slide rail ring (62) is fixedly connected to a lifting arc rod (63), the outer side of the lifting arc rod (63) is slidably connected to a displacement cylinder block (611), the outer side of the displacement cylinder block (611) is fixedly connected to a fixed tube plate (64), the upper surface of the fixed tube plate (64) is fixedly connected to four air pressure cylinders (65), the inner wall of each air pressure cylinder (65) is slidably connected to a piston (66), the top of the piston (66) is fixedly connected to a connecting pipe (67), the top of the connecting pipe (67) is fixedly connected to a suction cup (68), the top of the lifting arc rod (63) is fixedly connected to a support plate (610), and the top surface of the support plate (610) is fixedly connected to a rubber gasket (69).

8. The CCD automatic pre-alignment inner layer punching machine for PCB according to claim 7, characterized in that: The slide rail frame (61) is hingedly connected to the pressure groove rod (515), the displacement cylinder block (611) is slidably connected to the longitudinal axis slide rod (45), the displacement cylinder block (611) is slidably connected to the transverse axis slide rod (46), the connecting pipe (67) is slidably connected to the air pressure cylinder (65), the connecting pipe (67) is connected to the air pressure cylinder (65) through a piston (66), and the suction cup (68) is fixedly connected to the support plate (610).

9. The CCD automatic pre-alignment inner layer punching machine for PCB according to claim 1, characterized in that: The positioning mechanism (7) comprises a slide block (71), the slide block (71) being slidably connected to the upper surface of the base frame (1), the top surface of the slide block (71) being slidably connected to a top-lifting groove bar (73), the bottom surface of the top-lifting groove bar (73) being fixedly connected to a vertical pressure rod (72), the bottom end of the vertical pressure rod (72) being fixedly connected to a limiting column (75), the inner bottom surface of the top-lifting groove bar (73) being fixedly connected to an arc-shaped rubber strip (74), and the bottom surface of the base frame (1) being fixedly connected to a limiting tooth groove (76).

Images