Equipment for improving exposure alignment precision

Abstract

The utility model provides equipment for improving exposure alignment precision, which comprises a machine body, a feeding mechanism, a feeding direction centering mechanism, a left transverse centering mechanism, a right transverse centering mechanism and a plurality of laser ink removing mechanisms are arranged on the machine body, the feeding mechanism is used for driving a PCB (printed circuit board) to be conveyed forwards along the Y-axis direction, and the feeding direction centering mechanism is used for driving the PCB to be conveyed forwards along the Y-axis direction. The feeding direction center beating mechanism is used for beating the PCBs to be aligned to the middle in the feeding direction, the left side transverse center beating mechanism is used for beating the PCBs to be aligned to the middle in the direction from left to right, and the right side transverse center beating mechanism is used for beating the PCBs to be aligned to the middle in the direction from right to left. The laser ink removal mechanism comprises a first Y-axis linear driving mechanism, a Y-axis sliding plate, a first X-axis linear driving mechanism, a mounting seat in driving connection with the first X-axis linear driving mechanism, and a laser head module arranged on the mounting seat, so that the ink removal operation of the target can be completed, the accurate alignment of the PCB according to the position of the target when the D I photoetching machine exposes the PCB is facilitated, and the accuracy of the exposure of the PCB is improved. And the alignment precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of DI lithography machine technology, and more particularly to a device for improving exposure alignment accuracy. Background Technology

[0002] A DI (Distributed Ink) lithography machine is a processing device used in the PCB (Printed Circuit Board) manufacturing industry. It requires an imaging lens, which is one of the core components of the lithography machine. This lens focuses a light beam onto the PCB material, directly printing circuit patterns onto it. Before exposing the PCB, the DI lithography machine needs to align the PCB. This alignment involves capturing four targets on the PCB. However, these four targets are covered by ink when the PCB enters the lithography machine. Directly capturing these targets using the machine's camera results in low precision and some deviation, affecting processing accuracy. Summary of the Invention

[0003] The problem to be solved by this utility model is to provide a device for improving the alignment accuracy of exposure, which can improve the alignment accuracy during PCB exposure.

[0004] To solve the above-mentioned technical problems, this utility model provides a device for improving exposure alignment accuracy, comprising a machine body. The machine body is equipped with a feeding mechanism, a feeding-to-centering mechanism, a left-side transverse centering mechanism, a right-side transverse centering mechanism, and several laser ink removal mechanisms. The feeding mechanism is used to drive the PCB board forward along the Y-axis direction. The feeding-to-centering mechanism is used to center the PCB board along the feeding direction. The left-side transverse centering mechanism is used to center the PCB board from left to right. The right-side transverse centering mechanism is used to center the PCB board from right to left. The laser ink removal mechanism includes a first Y-axis linear drive mechanism disposed on the machine body, a Y-axis slide plate driven and connected to the first Y-axis linear drive mechanism, a first X-axis linear drive mechanism disposed on the Y-axis slide plate, a mounting base driven and connected to the first X-axis linear drive mechanism, and a laser head module disposed on the mounting base.

[0005] Preferably, the machine body includes four columns, an upper frame connected between the tops of the four columns, and a lower frame connected between the four columns; the feeding mechanism includes two Y-axis outer plates and two Y-axis inner plates fixedly connected to the top of the lower frame, and a servo motor; several first rotating shafts are rotatably connected between the two Y-axis outer plates and between the Y-axis outer plates and the Y-axis inner plates; support beams are connected between the two ends of the two Y-axis inner plates; two Y-axis connecting beams are connected between the two support beams; several second rotating shafts are rotatably connected between the two Y-axis connecting beams; rollers are evenly distributed on the first and second rotating shafts; and the servo motor is mounted on one of the Y-axis outer plates and is drively connected to the first and second rotating shafts.

[0006] Preferably, a T-shaped base plate is fixedly connected to the lower frame. The T-shaped base plate includes a Y-axis base plate and an X-axis base plate connected to one end of the Y-axis base plate. The feeding and tapping mechanism includes a second Y-axis linear drive mechanism disposed on the Y-axis base plate, a Y-axis slider driven and connected to the second Y-axis linear drive mechanism, a lifting cylinder disposed on the Y-axis slider, a feeding and tapping rod mounting plate driven and connected to the lifting cylinder, and feeding and tapping rods disposed on both sides of the top of the feeding and tapping rod mounting plate. The feeding and tapping rods are movably disposed between the inner Y-axis plate and the Y-axis connecting beam. The left and right transverse tapping mechanisms are disposed opposite to each other on both sides of the X-axis base plate. Both the left and right transverse tapping mechanisms include a second X-axis linear drive mechanism disposed on the X-axis base plate, a lateral tapping rod mounting plate driven and connected to the second X-axis linear drive mechanism, and several lateral tapping rods disposed on the top of the lateral tapping rod mounting plate.

[0007] Preferably, a feeding mechanism is provided on the T-shaped base plate. The feeding mechanism includes a motor mounting base fixedly connected to the bottom of the T-shaped base plate, a lifting drive motor mounted on the motor mounting base, an "I"-shaped connecting frame between the bottom of the T-shaped base plate and the top of the motor mounting base, several top rods mounted on the "I"-shaped connecting frame, and a receiving plate fixedly connected between the top ends of the several top rods. The receiving plate has through-holes corresponding to the rollers, and the rollers are movably mounted in the through-holes. The lifting drive motor and the "I"-shaped connecting frame are connected by a screw. A pressure plate is fixedly connected to the mounting base. A first light-transmitting hole is opened on the pressure plate. The laser emitted by the laser head module can pass through the first light-transmitting hole and be directed towards the receiving plate. The receiving plate has Y-axis through grooves and X-axis through grooves corresponding to the feeding direction plate and the side plate, respectively, along the Y-axis and X-axis directions.

[0008] Preferably, a cushioning foam is bonded to the bottom of the pressure plate, and a second light-transmitting hole is provided on the cushioning foam, which corresponds to the first light-transmitting hole.

[0009] Preferably, the mounting base is equipped with a CCD camera and a ring light source. The CCD camera can take pictures through the inner ring of the ring light source, and a display screen electrically connected to the CCD camera is provided on one side of the camera body.

[0010] Preferably, a number of mounting posts are arranged side by side on both the feed rod mounting plate and the side rod mounting plate, and a first photoelectric sensor and a second photoelectric sensor are arranged side by side on the top of the mounting posts.

[0011] Preferably, the upper frame includes two X-axis crossbeams and two Y-axis crossbeams, and four laser ink removal mechanisms are provided on the machine body. A Y-axis guide beam is fixedly connected between the two X-axis crossbeams. A first Y-axis linear drive mechanism is provided on the Y-axis crossbeam. One end of the Y-axis slide plate is slidably connected to the Y-axis guide beam. Both the first Y-axis linear drive mechanism and the first X-axis linear drive mechanism are synchronous belt slides.

[0012] Preferably, both the second Y-axis linear drive mechanism and the second X-axis linear drive mechanism are lead screw slides.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a device to improve the accuracy of exposure alignment. The PCB board is placed on the feeding mechanism, which drives the PCB forward to the designated position. After the PCB stops moving, the rear end, left side, and right side of the PCB are touched by the feeding-to-center mechanism, the left lateral centering mechanism, and the right lateral centering mechanism, respectively, to center the PCB at the designated position. After the PCB is positioned, the laser head modules of each laser ink removal mechanism are displaced in the Y-axis and X-axis directions under the drive of the first Y-axis linear drive mechanism and the first X-axis linear drive mechanism, respectively, so that the laser head modules are aligned with the target position set on the PCB. The laser head modules remove the ink covering the target surface on the PCB, thereby exposing the target on the PCB. This completes the ink removal operation of the target, making it convenient for the DI lithography machine to accurately align the PCB according to its target position during PCB exposure, thus improving the alignment accuracy. Attached Figure Description

[0014] Figure 1 A schematic diagram illustrating the external structure of this utility model is provided.

[0015] Figure 2 A cross-sectional view of the present invention is shown.

[0016] Figure 3 A schematic diagram illustrating the structure of the feeding mechanism of this utility model is shown.

[0017] Figure 4 A schematic diagram illustrating the assembly structure of the material feeding mechanism and the clapping mechanism of this utility model is shown.

[0018] Figure 5 A schematic diagram illustrating the structure of the laser ink removal mechanism of this utility model is shown.

[0019] Figure 6 This utility model is illustrated. Figure 1 A magnified schematic diagram of part A in the middle.

[0020] Figure 7 A schematic diagram illustrating the structure of the feeding and tapping mechanism of this utility model is shown.

[0021] Figure 8 A schematic diagram illustrating the structure of the left-side horizontal striking mechanism of this utility model is shown.

[0022] Reference numerals: 1. Body; 10. Column; 11. Upper frame; 11. X-axis crossbeam; 110. Y-axis crossbeam; 111. Y-axis guide beam; 112. Lower frame; 12. Feeding mechanism; 2. Y-axis outer side plate; 20. Y-axis inner side plate; 21. Servo motor; 22. First rotating shaft; 23. Support beam; 24. Y-axis connecting beam; 25. Second rotating shaft; 26. Roller; 27. Feeding to the centering mechanism; 3. T-shaped base plate; 30. Y-axis base plate; 300. X-axis base plate; 301. Second Y-axis linear drive mechanism; 31. Y-axis slider; 32. Lifting cylinder; 33. Feeding to the centering rod mounting plate; 34. Feeding to the centering rod; 35. Mounting column; 36. First photoelectric sensor; 360. Second photoelectric sensor. 361. Left lateral striking mechanism; 4. Second X-axis linear drive mechanism; 40. Lateral striking rod mounting plate; 41. Lateral striking rod; 42. Right lateral striking mechanism; 5. Laser ink removal mechanism; 6. First Y-axis linear drive mechanism; 60. Y-axis sliding plate; 61. First X-axis linear drive mechanism; 62. Mounting base; 63. Pressure plate; 64. First light-transmitting hole; 640. Buffer foam; 65. Second light-transmitting hole; 650. CCD camera; 66. Ring light source; 67. Display screen; 68. Top material mechanism; 7. Motor mounting base; 70. Lifting drive motor; 71. "I"-shaped connecting frame; 72. Top rod; 73. Receiving plate; 74. Alternating hole; 740. Y-axis through groove; 741. X-axis through groove; 742. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure.

[0024] Based on the embodiments described in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0025] refer to Figures 1-8 .

[0026] This utility model provides a device for improving exposure alignment accuracy, comprising a body 1, on which are arranged a feeding mechanism 2, a feeding-to-centering mechanism 3, a left-side transverse centering mechanism 4, a right-side transverse centering mechanism 5, and several laser ink removal mechanisms 6. The feeding mechanism 2 is used to drive the PCB board forward along the Y-axis direction. The feeding-to-centering mechanism 3 is used to center the PCB board along the feeding direction. The left-side transverse centering mechanism 4 is used to center the PCB board from left to right. The right-side transverse centering mechanism 5 is used to center the PCB board from right to left. The laser ink removal mechanism 6 includes a first Y-axis linear drive mechanism 60 disposed on the body 1, a Y-axis slide plate 61 driven and connected to the first Y-axis linear drive mechanism 60, a first X-axis linear drive mechanism 62 disposed on the Y-axis slide plate 61, a mounting base 63 driven and connected to the first X-axis linear drive mechanism 62, and a laser head module 64 disposed on the mounting base 63.

[0027] Its working principle is as follows: the PCB board is placed on the feeding mechanism 2, which drives the PCB forward to the designated position. After the PCB stops moving, the rear end, left side, and right side of the PCB are touched by the feeding and aligning mechanism 3, the left lateral aligning mechanism 4, and the right lateral aligning mechanism 5, respectively, to align the PCB to the designated center position. After the PCB is positioned, the laser head module 64 of each laser ink removal mechanism 6 is displaced in the Y-axis and X-axis directions under the drive of the first Y-axis linear drive mechanism 60 and the first X-axis linear drive mechanism 62, respectively, so that the laser head module 64 is aligned with the target position set on the PCB. The laser head module 64 removes the ink covering the target surface on the PCB to expose the target on the PCB. This completes the ink removal operation of the target, which is convenient for the DI lithography machine to accurately align the PCB according to its target position when exposing the PCB, thus improving the alignment accuracy.

[0028] Based on the above embodiments, the machine body 1 includes four columns 10, an upper frame 11 connected between the tops of the four columns 10, and a lower frame 12 connected between the four columns 10; the feeding mechanism 2 includes two Y-axis outer plates 20 and two Y-axis inner plates 21 fixedly connected to the top of the lower frame 12, and a servo motor 22. Several first rotating shafts 23 are rotatably connected between the two Y-axis outer plates 20 and between the Y-axis outer plates 20 and the Y-axis inner plates 21. Support beams 24 are connected between the two ends of the two Y-axis inner plates 21. Two Y-axis connecting beams 25 are connected between the two support beams 24. Several second rotating shafts 26 are rotatably connected between the two Y-axis connecting beams 25. Rollers 27 are evenly distributed on the first rotating shafts 23 and the second rotating shafts 26. The servo motor 22 is mounted on one of the Y-axis outer plates 20 and is connected to the first rotating shaft 23 and the second rotating shaft 26 in a transmission connection. Specifically, the output shaft of the servo motor 22 is connected to one end of each of the first rotating shafts 23 via chain drive, and the other end of one of the first rotating shafts 23 is also connected to one end of each of the second rotating shafts 26 via chain drive. When the servo motor 22 is working, it can drive each of the first rotating shafts 23 and the second rotating shafts 26 to rotate synchronously, and the PCB placed on the roller 27 can be conveyed forward. When the feeding and pressing mechanism 3 presses the PCB, the space between the Y-axis connecting beam 25 and the Y-axis inner side plate 21 can avoid the movement of the feeding and pressing mechanism 3 in the Y-axis direction, thereby pressing the PCB from back to front.

[0029] Based on the above embodiments, a T-shaped base plate 30 is fixedly connected to the lower frame 12. The T-shaped base plate 30 includes a Y-axis base plate 300 and an X-axis base plate 301 connected to one end of the Y-axis base plate 300. The feeding and tapping mechanism 3 includes a second Y-axis linear drive mechanism 31 disposed on the Y-axis base plate 300, a Y-axis slider 32 driven and connected to the second Y-axis linear drive mechanism 31, a lifting cylinder 33 disposed on the Y-axis slider 32, a feeding and tapping rod mounting plate 34 driven and connected to the lifting cylinder 33, and a feeding and tapping rod mounting plate 34 disposed on the feeding and tapping rod mounting plate 34. The top two sides of the feed direction flap 35 are movably disposed between the inner side plate 21 and the Y-axis connecting beam 25 in the Y-axis direction; the left transverse flapping mechanism 4 and the right transverse flapping mechanism 5 are disposed opposite to each other on both sides of the bottom plate 301 in the X-axis direction. The left transverse flapping mechanism 4 and the right transverse flapping mechanism 5 each include a second X-axis linear drive mechanism 40 disposed on the bottom plate 301 in the X-axis direction, a lateral flapping rod mounting plate 41 that is driven and connected to the second X-axis linear drive mechanism 40, and a number of lateral flapping rods 42 disposed on the top of the lateral flapping rod mounting plate 41. Specifically, initially, the top of the feed guide bar 35 is lower than the highest point of the roller 27 to avoid obstructing the PCB conveying. When the PCB is conveyed by the feed mechanism 2, it passes between the side bar 42 of the left transverse centering mechanism 4 and the side bar 42 of the right transverse centering mechanism 5. After the PCB is conveyed to the designated position, the feed guide bar 35 is first driven to rise to a certain height by the lifting cylinder 33, and then the feed guide bar 35 is driven forward to the designated position by the second Y-axis linear drive mechanism 31, thereby placing the PCB at the center position in the Y-axis direction. The side bar mounting plate 41 is driven to move along the X-axis direction to the designated position by the second X-axis linear drive mechanism 40 of the left transverse centering mechanism 4 and the right transverse centering mechanism 5, thereby placing the PCB at the center position in the X-axis direction.

[0030] Based on the above embodiments, a top-feeding mechanism 7 is provided on the T-shaped base plate 30. The top-feeding mechanism 7 includes a motor mounting base 70 fixedly connected to the bottom of the T-shaped base plate 30, a lifting drive motor 71 disposed on the motor mounting base 70, an "I"-shaped connecting frame 72 disposed between the bottom of the T-shaped base plate 30 and the top of the motor mounting base 70, a plurality of top rods 73 mounted on the "I"-shaped connecting frame 72, and a receiving plate 74 fixedly connected between the top ends of the plurality of top rods 73. The receiving plate 74 has through-distributed parts corresponding to the rollers 27. The roller 27 is movably disposed in the clearance hole 740. The lifting drive motor 71 is connected to the "I"-shaped connecting frame 72 through the screw. The mounting base 63 is fixedly connected to the pressure plate 64. The pressure plate 64 is provided with a first light-transmitting hole 640. The laser emitted by the laser head module 64 can pass through the first light-transmitting hole 640 and be directed to the receiving plate 74. The receiving plate 74 is provided with Y-axis through grooves 741 and X-axis through grooves 742 respectively along the Y-axis and X-axis directions, corresponding to the feeding direction flap 35 and the side flap 42. Specifically, when the feeding-directing striking mechanism 3, the left-side transverse striking mechanism 4, and the right-side transverse striking mechanism 5 perform the striking operation on the PCB, the feeding-directing striking rod 35 and the transverse striking rod 42 can move along the Y-axis through slot 741 and the X-axis through slot 742, respectively. After the PCB is struck, the lifting drive motor 71 drives the receiving plate 74 to rise to a certain height to press the PCB between the pressure plate 64 and the receiving plate 74 for positioning. Then, the laser head module 64 removes the ink from the target surface on the PCB.

[0031] Based on the above embodiments, a cushioning foam 65 is bonded to the bottom of the pressure plate 64. The cushioning foam 65 has a second light-transmitting hole 650 that corresponds to the first light-transmitting hole 640. When the receiving plate 74 lifts the PCB, the PCB is pressed between the cushioning foam 65 and the receiving plate 74. The cushioning foam 65 plays a buffering role to prevent the PCB surface from being damaged by pressure.

[0032] Based on the above embodiments, a CCD camera 66 and a ring light source 67 are provided on the mounting base 63. The CCD camera 66 can take pictures through the inner ring of the ring light source 67. A display screen 68 electrically connected to the CCD camera 66 is provided on one side of the camera body 1. The target position can be photographed and the image can be displayed on the display screen 68 to ensure that the ink at the target position is completely removed.

[0033] Based on the above embodiments, a plurality of mounting posts 36 are arranged side by side on both the feed-to-paddle mounting plate 34 and the side-paddle mounting plate 41. A first photoelectric sensor 360 and a second photoelectric sensor 361 are arranged side by side on the top of the mounting posts 36. When the PCB is being paddled, the feed-to-paddle mounting plate 34 and the side-paddle mounting plate 41 move toward the center under the drive of the second Y-axis linear drive mechanism 31 and the second X-axis linear drive mechanism 40, respectively. The first photoelectric sensor 360 and the second photoelectric sensor 361 can sequentially identify the edge of the PCB, thereby determining whether the feed-to-paddle 35 and the side-paddle 42 are in contact with the side of the PCB.

[0034] Based on the above embodiments, the upper frame 11 includes two X-axis crossbeams 110 and two Y-axis crossbeams 111. The machine body 1 is equipped with four laser ink removal mechanisms 6. A Y-axis guide beam 112 is fixedly connected between the two X-axis crossbeams 110. A first Y-axis linear drive mechanism 60 is disposed on the Y-axis crossbeam 111. One end of the Y-axis slide plate 61 is slidably connected to the Y-axis guide beam 112. The first Y-axis linear drive mechanism 60 and the first X-axis linear drive mechanism 62 are both synchronous belt slides, which can simultaneously perform ink removal operations on four targets on the PCB without interfering with each other.

[0035] Based on the above embodiments, the second Y-axis linear drive mechanism 31 and the second X-axis linear drive mechanism 40 are both lead screw slides, which have good working stability.

[0036] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An apparatus for improving exposure alignment accuracy, comprising a body, characterized in that, The machine body is provided with a feeding mechanism, a feeding-to-centering mechanism, a left lateral centering mechanism, a right lateral centering mechanism, and a plurality of laser ink removing mechanisms. The feeding mechanism is used to drive the PCB to forwardly convey along the Y-axis direction. The feeding-to-centering mechanism is used to align the PCB to the center along the feeding direction. The left lateral centering mechanism is used to align the PCB to the center in the left-to-right direction. The right lateral centering mechanism is used to align the PCB to the center in the right-to-left direction. The laser ink removing mechanism comprises a first Y-axis linear drive mechanism arranged on the machine body, a Y-axis sliding plate drivingly connected with the first Y-axis linear drive mechanism, a first X-axis linear drive mechanism arranged on the Y-axis sliding plate, a mounting seat drivingly connected with the first X-axis linear drive mechanism, and a laser head module arranged on the mounting seat.

2. The apparatus of claim 1, wherein, The machine body comprises four upright columns, an upper frame connected between the top ends of the four upright columns, and a lower frame connected between the four upright columns. The feeding mechanism comprises two Y-axis outer side plates and two Y-axis inner side plates fixedly connected to the top of the lower frame, and a servo motor. A plurality of first rotating shafts are rotatably connected between the two Y-axis outer side plates and between the Y-axis outer side plates and the Y-axis inner side plates. Support beams are connected between the two ends of the two Y-axis inner side plates. Two Y-axis connecting beams are connected between the two support beams. A plurality of second rotating shafts are rotatably connected between the two Y-axis connecting beams. The first rotating shafts and the second rotating shafts are uniformly provided with rollers. The servo motor is arranged on one of the Y-axis outer side plates and is drivingly connected with the first rotating shafts and the second rotating shafts.

3. The apparatus of claim 2, wherein, A T-shaped bottom plate is fixedly connected to the lower frame. The T-shaped bottom plate comprises a Y-axis bottom plate and an X-axis bottom plate connected to one end of the Y-axis bottom plate. The feeding-to-centering mechanism comprises a second Y-axis linear drive mechanism arranged on the Y-axis bottom plate, a Y-axis sliding block drivingly connected with the second Y-axis linear drive mechanism, a lifting cylinder arranged on the Y-axis sliding block, a feeding-to-centering rod mounting plate drivingly connected with the lifting cylinder, and feeding-to-centering rods arranged on both sides of the top of the feeding-to-centering rod mounting plate. The feeding-to-centering rods are movably arranged between the Y-axis inner side plates and the Y-axis connecting beams. The left lateral centering mechanism and the right lateral centering mechanism are oppositely arranged on both sides of the X-axis bottom plate. The left lateral centering mechanism and the right lateral centering mechanism each comprise a second X-axis linear drive mechanism arranged on the X-axis bottom plate, a lateral centering rod mounting plate drivingly connected with the second X-axis linear drive mechanism, and a plurality of lateral centering rods arranged on the top of the lateral centering rod mounting plate.

4. The apparatus of claim 3, wherein, A feeding mechanism is provided on the T-shaped base plate. The feeding mechanism includes a motor mounting base fixedly connected to the bottom of the T-shaped base plate, a lifting drive motor mounted on the motor mounting base, an "I"-shaped connecting frame between the bottom of the T-shaped base plate and the top of the motor mounting base, several top rods mounted on the "I"-shaped connecting frame, and a receiving plate fixedly connected between the top ends of the several top rods. The receiving plate has through-holes corresponding to the rollers, and the rollers are movably disposed in the through-holes. The lifting drive motor is connected to the "I"-shaped connecting frame via a lead screw. A pressure plate is fixedly connected to the mounting base. A first light-transmitting hole is opened on the pressure plate, and the laser emitted by the laser head module can pass through the first light-transmitting hole and be directed towards the receiving plate. The receiving plate has Y-axis through grooves and X-axis through grooves corresponding to the feeding direction flap and the side flap, respectively, along the Y-axis and X-axis directions.

5. The apparatus of claim 4, wherein, The bottom of the pressure plate is bonded with cushioning foam, and the cushioning foam has a second light-transmitting hole that corresponds to the first light-transmitting hole.

6. The apparatus of claim 1, wherein, The mounting base is equipped with a CCD camera and a ring light source. The CCD camera can take pictures through the inner ring of the ring light source. A display screen electrically connected to the CCD camera is provided on one side of the body.

7. The apparatus of claim 4, wherein, The feed feed plate and the side plate are each provided with a number of mounting posts arranged in parallel. The top of each mounting post is provided with a first photoelectric sensor and a second photoelectric sensor arranged in parallel.

8. The apparatus of claim 2, wherein, The upper frame includes two X-axis crossbeams and two Y-axis crossbeams. Four laser ink removal mechanisms are provided on the machine body. A Y-axis guide beam is fixedly connected between the two X-axis crossbeams. The first Y-axis linear drive mechanism is disposed on the Y-axis crossbeam. One end of the Y-axis slide plate is slidably connected to the Y-axis guide beam. Both the first Y-axis linear drive mechanism and the first X-axis linear drive mechanism are synchronous belt slides.

9. The apparatus of claim 3, wherein, Both the second Y-axis linear drive mechanism and the second X-axis linear drive mechanism are lead screw slides.

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