A character jet printing apparatus dedicated to a soft board

Abstract

The application relates to a character jet printing equipment special for soft boards, which comprises a rack, a workpiece table connected to the rack through front and rear movable structures, a material box, a qualified product collecting box, an unqualified product collecting box and a jet printing seat arranged on the rack, a jet printing device and a positioning camera arranged on the jet printing seat and matched with the soft board on the workpiece table, a suction device for taking and placing the soft board connected to the suction transverse lifting mechanism on the rack, the suction device comprising a suction plate connected to the suction transverse lifting mechanism, a suction structure for taking and placing the soft board and a pressing structure for pressing the edge of the soft board during the taking and placing process connected below the suction plate, a calibration device arranged on the front and rear sides of the workpiece table, the calibration device being used for displaying initial jet printing coordinates in cooperation with the jet printing device and the positioning camera; a pressing plate structure is installed on the suction device, the soft board is prevented from being warped during the taking and placing process, the positioning camera can collect accurate soft board coordinates, alignment compensation is carried out, and the subsequent character jet printing precision is ensured.

Description

Technical Field

[0001] This invention relates to the field of PCB flexible board text printing technology, and in particular to a text printing device specifically designed for flexible boards. Background Technology

[0002] During PCB board processing, text printing is required. This text printing is achieved using a text printing equipment, which consists of a material box, a qualified product collection box, a defective product collection box, a workpiece stage, a pick-and-place mechanism, a printing device, and a positioning camera. The pick-and-place mechanism picks up the PCB board from the material box and places it onto the workpiece stage. Then, the feeding mechanism at the bottom of the workpiece stage moves the workpiece stage below the printing device. The positioning camera captures the mark points on the PCB board on the workpiece stage, obtains the coordinates of the PCB board, and guides the printing device to complete the text printing. After printing, the workpiece stage returns to its original position and is then picked up and placed into the corresponding qualified or defective product collection box by the pick-and-place mechanism.

[0003] Existing positioning cameras capture 3-4 mark points on the PCB flexible board on the workstation to obtain the PCB flexible board's coordinates. Then, based on these coordinates, the inkjet printing device is guided to complete the printing process. In this process, one point needs to be ensured: the initial printing position of the inkjet printing device is the coordinate origin. After each printing, it is necessary to ensure that the print head can return to the coordinate origin. However, in actual use, it is not entirely possible to guarantee that the print head can accurately return to the coordinate origin. The commonly used calibration method is to use a bare board with a screen printing film attached. The inkjet printing device prints the graphic onto the screen printing film, and then relies on manual observation and adjustment to make the alignment coordinate system and the printing coordinate system coincide. This method has a large error deviation, is time-consuming and cumbersome, and most importantly, has poor printing position accuracy, which can easily lead to inaccurate printing of text. Similarly, the flexible board is also prone to warping during handling, which will also affect the positioning camera's positioning of the flexible board and the accuracy of subsequent text printing. Summary of the Invention

[0004] The purpose of this invention is to provide a text printing device specifically for flexible printed circuit boards. The device uses a calibration device to provide real-time printhead coordinates and installs a pressure plate structure on the suction device to prevent the flexible printed circuit board from warping during loading and unloading. This ensures that the positioning camera can acquire accurate coordinates of the flexible printed circuit board, and the coordinate difference between the two coordinate systems can be calculated for alignment compensation, thus ensuring the accuracy of subsequent text printing.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a text printing device specifically for flexible printed circuit boards, comprising a frame, a workpiece stage connected to the frame via a front and rear movable structure, a material box, a qualified product collection box, a defective product collection box, and a printing base on the frame, wherein the printing base is provided with a printing device and a positioning camera that cooperate with the flexible printed circuit board on the workpiece stage, a suction device for picking up and placing the flexible printed circuit board is connected to the frame via a suction and horizontal lifting mechanism, the suction device includes a suction plate connected to the suction and horizontal lifting mechanism, a suction structure for picking up and placing the flexible printed circuit board and a clamping structure for pressing the edge of the flexible printed circuit board during the picking and placing process are connected below the suction plate, and a calibration device is provided on the front and rear sides of the workpiece stage, the calibration device being used to display the initial printing coordinates in conjunction with the printing device and the positioning camera.

[0006] By combining the clamping structure with the suction structure, the edges of the flexible circuit board can be clamped when the suction device picks up and puts it in, preventing it from warping during the process. This ensures that the positioning camera accurately captures the coordinates of the flexible circuit board. The calibration device, in conjunction with the printing device, can perform initial printing on the calibration device, and the positioning camera can obtain the initial coordinates of the printing device. Then, alignment compensation is calculated using the two coordinate systems, thereby ensuring the accuracy of the printing.

[0007] Preferably, the suction lifting and traversing mechanism includes a suction traversing device and a suction lifting device. The suction lifting device is provided with a suction mounting block. The suction plate is mounted on the suction mounting block through a suction mounting groove. A suction mounting column is installed at the lower part of the suction plate. The suction structure includes a suction cup mounted on the lower part of the suction mounting column by a buffer spring. The pressing structure includes a suction connecting block mounted on the lower part of the suction mounting column by a buffer spring. A suction pressing block is connected below the suction connecting block. The lower end of the suction cup and the lower end of the suction pressing block are at the same height. The suction cup is used to suction the soft board. The suction pressing block is used to press the edge of the soft board when the suction cup suctions or places the soft board. The suction plate is a metal plate. The upper part of the suction mounting column is a magnetic block. The suction mounting column and the suction plate are connected by magnetic adsorption.

[0008] When picking up and placing the flexible board, the edges of the board can be pressed down by the suction block to prevent the edges from lifting. The suction mounting column is installed by using magnetic blocks and metal plates for magnetic adsorption, which makes it easy to adjust the position of the suction mounting column.

[0009] Preferably, there are three suction blocks, which respectively cooperate with the three sides of the soft plate. The suction block has a structure that protrudes inward from the middle, and the suction connecting block is connected to the middle of the suction block. The suction block has a bolt hole that runs from bottom to top and is locked to the suction connecting block by a bolt. The lower part of the bolt hole is a groove that cooperates with the bolt head. The bolt head used to lock the suction block and the suction connecting block is completely in the groove.

[0010] The shape design of the suction block ensures that it does not interfere with the suction cup's suction, allowing the suction cup to adhere to the edge of the flexible board as much as possible. The suction block uses bolt holes to lock with the suction connecting block, with bolts fully embedded in the suction block, facilitating disassembly without affecting the suction block's clamping function.

[0011] Preferably, the workpiece stage includes a main frame and a suction plate. A support block is provided inside the main frame, and the main frame is connected to an air extraction structure. A side pressure block is connected to the main frame through a side movable structure, a front pressure block is connected through a front movable structure, and a rear pressure block is connected through a rear movable structure. The side pressure block, rear pressure block, and front pressure block can all detach from the suction plate when the plate is placed. After the plate is placed, the four sides of the soft plate on the suction plate are pressed tightly. An adsorption ring is provided on the suction plate, and an adsorption hole communicating with the inner cavity of the main frame is provided at the bottom of each adsorption ring.

[0012] After the flexible board is unloaded, the four sides of the flexible board on the suction plate are pressed by the side pressure block, front pressure block and rear pressure block, and then adsorbed by negative pressure. This ensures that the flexible board is flat and without warping on the workpiece table, which plays a good positioning role for subsequent text printing. The design of the adsorption ring and the adsorption hole can make each area adsorbed with the flexible board ring-shaped, increasing the adsorption area and thus ensuring the stability of adsorption.

[0013] Preferably, the front movable structure includes a sliding block that runs through the main frame. The sliding block and the suction plate are provided with a sliding groove that runs through the top and bottom. The bottom of the main frame is provided with a front movable motor and a front movable belt that cooperate with each other. The front movable belt is connected to a front movable seat that cooperates with a sliding rail that runs back and forth on the lower part of the main frame. A front lifting cylinder is provided on the front movable seat. The front lifting cylinder is connected to a front pressure block through a connecting rod that runs through the sliding groove.

[0014] The design of the sliding block ensures that the airflow inside the main frame is not affected by the through-type structure, thus guaranteeing the negative pressure adsorption effect. The front movable seat can be moved in the front and back directions by the front movable motor and the front movable belt. In conjunction with the lifting of the front lifting cylinder, the front pressure block can be lifted and moved, thereby adapting to the pressing of soft plates of different lengths.

[0015] Preferably, the side movable structure includes side mounting seats installed on both sides of the main frame. Side movable belts are mounted on the two side mounting seats via rotating wheels and driven by a side movable motor. The side movable belts are connected to two side movable seats that can move in opposite directions or back to back. A side lifting cylinder is provided on the side movable seat, and the side lifting cylinder is connected to a right-angled side pressure block.

[0016] The side movable structure drives the two side movable seats to move towards or away from each other through the movement of the side movable belt. In conjunction with the side lifting cylinder, the two side pressure blocks can be lifted and moved.

[0017] Preferably, the rear movable structure includes a rear mounting block installed on the rear side of the main frame, a rotatable rear pressure plate cylinder mounted on the rear mounting block, the rear pressure plate cylinder being connected to a rear pressure plate connecting block, the rear pressure block being right-angled and mounted on the rear pressure plate connecting block, the side of the rear pressure plate connecting block being cylindrical and inserted into a rear pressure plate movable groove opened on the rear mounting block, the lower part of the rear pressure plate movable groove being a square groove and the upper part being an arc groove.

[0018] The rear movable structure, through the rear pressure plate cylinder and the shape of the rear pressure plate movable groove, can make the rear pressure plate perform arc-shaped movement and lifting movement, thus achieving the function of pressing and disengaging.

[0019] Preferably, the calibration device includes a calibration box disposed on the front and rear sides of the workpiece table. The calibration box contains a calibration motor, two calibration drums, and two take-up and undo drums. Each of the two take-up and undo drums is equipped with a calibration tape roll, which is the same calibration tape and wraps around both calibration drums. The upper plate of the calibration box, located between the two calibration drums, has a calibration opening matching the width of the calibration tape. The shafts of the two calibration drums are connected to a calibration transmission belt via pulleys, and the calibration transmission belt is driven by the calibration motor. One end of the shaft of the take-up and undo drums is equipped with a pulley that engages with the calibration transmission belt, and the other end of the shaft is connected to a manual tensioning wheel. The side of the calibration box has a manual tensioning opening that engages with the manual tensioning wheel. The upper plate and side plates of the calibration box are openable / closable.

[0020] The initial position of the printhead is marked by a calibration belt, allowing the positioning camera to simultaneously acquire the initial coordinates of the printhead and the coordinates of the flexible board on the workpiece stage. Relative coordinate calculations are then performed to guide the printhead along the set path for text printing, ensuring accuracy. One end of the take-up / untake-off spool is driven by the calibration conveyor belt, enabling the take-up / untake-off spool and the calibration spool to rotate in tandem, preventing the calibration belt from breaking due to excessive tension during repositioning. The manual tensioning wheel and manual tensioning port allow for appropriate adjustment of the calibration belt tension.

[0021] Preferably, the frame is further provided with a glue-separating transverse movement mechanism that is offset in height from the suction transverse movement lifting mechanism. The glue-separating transverse movement mechanism is connected to a glue-separating paper mechanism that cooperates with a qualified product collection box or a defective product collection box. The glue-separating paper mechanism includes a glue-separating box connected to the glue-separating transverse movement mechanism. A glue-separating picking and placing device is provided inside the glue-separating box. The glue-separating picking and placing device includes a glue-separating mounting seat set in a glue-separating paper frame. The glue-separating mounting seat is connected to a first glue-separating lifting seat through a glue-separating lifting cylinder. A glue-separating lifting motor is installed on the first glue-separating lifting seat. The glue-separating lifting motor is connected to a glue-separating lifting screw through the internal threaded nut. A second glue-separating lifting seat is connected to the upper end of the glue-separating lifting screw. A glue-separating suction block is connected to the second glue-separating lifting seat. A glue-separating suction device is provided below the glue-separating suction block. A first lifting guide rod is provided between the glue-separating mounting seat and the first glue-separating lifting seat. A second lifting guide rod is provided between the first glue-separating lifting seat and the second glue-separating lifting seat.

[0022] The first stage of lifting is driven by a lifting cylinder with a fixed extension range. The second stage of lifting is controlled by the adhesive separation lifting screw and the adhesive separation lifting motor. The lifting range of the adhesive separation suction block can be controlled by the number of rotations of the adhesive separation lifting motor. This works in conjunction with the stacks of flexible boards of different heights in the defective product collection box and the qualified product collection box to avoid crushing the PCB flexible boards.

[0023] Preferably, the separator box is equipped with a separator motor and a separator belt driven by it. The separator mounting base is connected to the separator belt, and the separator mounting base also cooperates with a transverse slide rail on the separator box. The separator box is also equipped with an adhesive tape frame, which is also connected to the separator belt. The phase difference between the adhesive tape frame and the connection points of the separator mounting base and the separator belt is 180 degrees.

[0024] The design of the adhesive separator mounting base and the adhesive separator movable belt, and the adhesive tape frame is also connected to the adhesive separator movable belt, allows the adhesive tape frame and the adhesive separator picking and placing device to move towards or away from each other. The lateral movement of picking up adhesive tape can be achieved within the adhesive separator box, which reduces the movement position of the entire adhesive separator lateral movement mechanism, so that the adhesive separator lateral movement mechanism only needs to move on the non-conforming product collection box and the conforming product collection box. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a text printing device specifically designed for flexible printed circuit boards.

[0026] Figure 2 A three-dimensional schematic diagram of the lateral lifting mechanism and the suction device.

[0027] Figure 3 This is a three-dimensional schematic diagram of the suction device.

[0028] Figure 4 This is a bottom-view three-dimensional schematic diagram of the suction device after the flexible plate has been removed.

[0029] Figure 5 This is a top-view three-dimensional schematic diagram of a pressure plate type workpiece stage.

[0030] Figure 6 for Figure 5 A 3D diagram after removing the suction plate.

[0031] Figure 7 This is a frontal three-dimensional schematic diagram of a pressure plate type workpiece stage.

[0032] Figure 8 This is a three-dimensional schematic diagram of a pressure plate type workpiece stage viewed from below.

[0033] Figure 9 This is a three-dimensional schematic diagram of the rear movable structure.

[0034] Figure 10 This is a three-dimensional schematic diagram of the workpiece stage and two calibration devices.

[0035] Figure 11 This is a three-dimensional schematic diagram of the calibration device.

[0036] Figure 12 This is a three-dimensional schematic diagram of the adhesive paper mechanism.

[0037] Figure 13 A three-dimensional schematic diagram of the adhesive paper mechanism after part of the shell has been removed.

[0038] Figure 14 This is a three-dimensional schematic diagram of the adhesive release and removal device in its extended state.

[0039] Figure 15 This is a three-dimensional schematic diagram of the adhesive release and take-up device in its retracted state.

[0040] The text labels in the diagram represent: 1. Frame; 2. Printing stand; 3. Workpiece table; 4. Material box; 5. Qualified product collection box; 6. Unqualified product collection box; 7. Suction device; 8. Suction traverse lifting mechanism; 9. Adhesive paper mechanism; 11. Suction traverse device; 12. Suction lifting device; 13. Suction mounting block; 14. Suction plate; 15. Suction mounting groove; 16. Suction mounting column; 17. Suction buffer spring; 18. Suction... 19. Connecting block; 20. Suction cup; 21. Suction pressing block; 22. Flexible plate; 23. Bolt hole; 34. Main frame; 35. Suction plate; 36. Side pressing block; 37. Rear pressing block; 38. Front pressing block; 39. Support block; 40. Slide block; 40. Slide; 41. Side movable motor; 42. Side movable belt; 43. Side movable seat; 44. Side lifting cylinder; 45. Front movable motor; 46. Front 46. ​​Movable belt; 47. Front movable seat; 48. Front lifting cylinder; 49. Rear pressure plate structure; 50. Rear mounting block; 51. Rear pressure plate cylinder; 52. Rear pressure plate connecting block; 53. Rear pressure plate movable groove; 54. Adsorption ring; 65. Adsorption hole; 66. Calibration box; 67. Manual tensioning port; 68. Calibration motor; 69. Calibration drum; 60. Calibration transmission belt; 61. Take-up and untake-off drum; 62. Calibration belt; 63. Manual tensioning... 71. Tensioner; 72. Glue separator box; 73. Glue separator movable motor; 74. Glue separator movable belt; 75. Glue separator picking and placing device; 76. Adhesive paper frame; 77. Glue separator mounting base; 78. Glue separator lifting cylinder; 79. First Glue separator lifting seat; 80. First lifting guide rod; 81. Glue separator lifting motor; 82. Glue separator lifting screw; 83. Second Glue separator lifting seat; 84. Second lifting guide rod; 85. Glue separator suction block; 86. Glue separator suction device. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0042] like Figures 1-5As shown, this application discloses a text printing device specifically for flexible printed circuit boards, comprising a frame 1, a workpiece stage 3 connected to the frame 1 via a front-to-back movable structure, a material box 4, a qualified product collection box 5, a defective product collection box 6, and a printing base 2. The printing base 2 is equipped with a printing device and a positioning camera that cooperate with the flexible printed circuit board 21 on the workpiece stage 3. The frame 1 is connected to a suction device 7 for picking up and placing the flexible printed circuit board 21 via a suction and horizontal lifting mechanism 8. The suction device 7 includes a suction plate 14 connected to the suction and horizontal lifting mechanism 8. Below the suction plate 14 are a suction structure for picking up and placing the flexible printed circuit board 21 and a clamping structure for pressing the edge of the flexible printed circuit board 21 during the picking up and placing process. The workpiece stage 3 is provided with a calibration device on its front and rear sides, which is used to display the initial printing coordinates in conjunction with the printing device and the positioning camera.

[0043] The specific operation of PCB flexible board text printing using the equipment of this application is as follows: First, the suction device 7 is moved above the material box 4 by the suction horizontal lifting mechanism 8, and then the suction device 7 is lowered so that the suction structure can pick up the flexible board 21. At the same time, during the suction process, the edge of the flexible board 21 is pressed by the clamping structure. Then, the suction horizontal lifting cylinder 8 drives the suction device 7 to move horizontally and vertically, placing the flexible board 21 on the workpiece stage 3. During the board placement process, the clamping structure also presses the edge of the flexible board 21, thus ensuring that no edge warping occurs during board picking and placement. Then, the workpiece stage 3 is moved below the printing device by the front and rear movable structure. During the movement, the rear part... The calibration device first moves to the bottom of the printing device and performs one print. After it is fully completed, the printing device performs one print on the calibration device in front. The positioning camera captures the mark point on the flexible board 21 for flexible board positioning, and at the same time captures the print point on the calibration device to locate the initial position of the printing device. In this way, the alignment compensation amount between the flexible board and the printing device can be obtained. The printing device is controlled to move for alignment compensation, and then the printing is performed according to the printing program. This ensures the accuracy of text printing. Compared with manual alignment, it greatly improves work efficiency. After the text printing is completed, the printed flexible board is picked up and placed into the corresponding qualified product collection box 5 or unqualified product collection box 6 by the suction and transverse mechanism 8 in conjunction with the suction device 7.

[0044] like Figures 2-4As shown, the suction lifting and traversing mechanism 8 includes a suction traversing device 11 and a suction lifting device 12. A suction mounting block 13 is provided on the suction lifting device 12. The suction plate 14 is mounted on the suction mounting block 13 through a suction mounting groove 15. A suction mounting column 16 is mounted on the lower part of the suction plate 14. The suction structure includes a suction cup 19 mounted on the lower part of the suction mounting column 16 via a buffer spring. The clamping structure includes a suction connecting block 19 mounted on the lower part of the suction mounting column 16 via a buffer spring. 8. A suction pressure block 20 is connected below the suction connecting block 18. The lower end of the suction cup 19 and the lower end of the suction pressure block 20 are at the same height. There are three suction pressure blocks 20, which respectively cooperate with the three sides of the soft plate 21. The suction cup 19 is used to suction the soft plate 21. The suction pressure block 20 is used to press the edge of the soft plate 21 when the suction cup 19 suctions or places the soft plate 21. The suction plate 14 is a metal plate. The upper part of the suction mounting column 16 is a magnet block. The suction mounting column 16 and the suction plate 14 are connected by magnetic adsorption.

[0045] When using the suction device of this application for suction, the specific operation is as follows: first, the suction device is moved above the material box by the horizontal lifting mechanism, and then the entire suction device is lowered, so that the suction plate 14 and the suction cup 19 and suction block 20 installed below it descend synchronously, so that the suction cup 19 and suction block 20 simultaneously contact the PCB flexible board 21. The suction cup 19 adsorbs the flexible board 21 through negative pressure adsorption, while the suction block 20 presses the three sides of the flexible board 21 to prevent the edges from lifting during the suction process. After the suction is completed, the suction device is moved above the workpiece table by the horizontal lifting mechanism, and then... The suction device descends as a whole, placing the suction plate 21 onto the workpiece table. Then, the suction cup 19 releases the negative pressure adsorption, separating the suction cup 19 from the flexible plate 21. During the separation process, the suction block also presses down on three sides of the flexible plate 21 throughout the process, ensuring that the edges of the flexible plate will not lift up during the feeding process. The suction plate 14 is designed as a metal plate, and the upper part of the suction mounting column 16 is set as a magnetic block. In this way, the suction plate 14 and the suction mounting column 16 can be connected by magnetic adsorption, which is convenient for installation. At the same time, after magnetic adsorption, the position of the suction mounting column 16 can be adjusted by pushing, which facilitates the adjustment of the suction area.

[0046] like Figures 3-4 As shown, the suction block 20 has a structure that protrudes inward from the center, and the suction connecting block 18 is connected to the center of the suction block 20; the suction block 20 has a bolt hole 22 that runs from bottom to top, and is locked to the suction connecting block 18 by a bolt, and the lower part of the bolt hole 22 is a groove that mates with the bolt head, so that the bolt head used to lock the suction block 20 and the suction connecting block 18 is completely inside the groove.

[0047] After the suction block 20 passes through the bolt hole 22 with a bolt, it is threadedly locked to the suction connecting block 18. After locking, the bolt is completely inside the suction block 20, which will not affect the pressing effect of the suction block 20. It is also easy to disassemble. The inward protrusion of the middle part of the suction block 20 allows the suction cup 19 to be close to the inner sides of both ends of the suction block 20, so that the suction cup 19 can pick up the edge part of the soft plate as much as possible.

[0048] like Figures 5-9 As shown, the workpiece stage 3 includes a main frame 31 and a suction plate 32. A support block 36 is provided inside the main frame 31, and the main frame 31 is connected to an air extraction structure. A side pressure block 33 is connected to the main frame 31 through a side movable structure, a front pressure block 35 is connected through a front movable structure, and a rear pressure block 34 is connected through a rear movable structure. The side pressure block 33, the rear pressure block 34, and the front pressure block 35 can all detach from the suction plate 32 when the plate is placed. After the plate is placed, the four sides of the soft plate on the suction plate 32 are pressed. An adsorption ring 53 is provided on the suction plate 32, and an adsorption hole 54 communicating with the inner cavity of the main frame 31 is provided at the bottom of the adsorption ring 53.

[0049] When the suction mechanism prepares to place the soft board onto the workpiece table, the front pressure block 35 moves to the front end under the action of the front movable structure. The rear pressure block 34 and the side pressure block 33 disengage from the suction plate 32 under the action of the rear movable structure and the side movable structure, respectively, without interfering with the feeding of the soft board. After the suction mechanism completes the feeding of the soft board, the rear pressure block 34 and the side pressure block 33 move above the suction plate 32 and press down to complete the pressing of the edge of the soft board. The front pressure block moves to the position corresponding to the front edge of the soft board to press the front edge of the soft board. The air extraction structure removes the gas in the main frame 31 and then removes the gas in the adsorption ring 53 from the adsorption hole 54, so that the soft board and the suction plate 32 form a negative pressure adsorption. Since the four sides are pressed, there will be no edge warping during the adsorption process.

[0050] To better determine whether a flexible board is placed on the suction plate 32, holes are made in the part of the suction plate supported by the support block 36, and a sensor for detecting whether a board is present is installed on the corresponding support block 36.

[0051] like Figure 5 , Figure 7 and Figure 8 As shown, the front movable structure includes a sliding block 37 that passes through the main frame 31. The sliding block 37 and the suction plate 32 are provided with a sliding groove 38 that passes through from top to bottom. The bottom of the main frame 31 is provided with a front movable motor 44 and a front movable belt 45 that cooperate with each other. The front movable belt 45 is connected to a front movable seat 46 that cooperates with a sliding rail that runs back and forth at the bottom of the main frame 31. A front lifting cylinder 47 is provided on the front movable seat 46. The front lifting cylinder 47 is connected to a front pressure block 35 through a connecting rod that passes through the sliding groove 38.

[0052] The front pressure block moves by the front movable motor 44 driving the front movable belt 45, which in turn drives the front movable seat 46 to move back and forth along the slide rail. The connecting rod that passes through the slide groove 38 will move the front pressure block 35 back and forth. When the pressure plate is needed, the connecting rod and the front pressure block 35 connected to it will be lowered by the front lifting cylinder 47. In this way, the pressure plate position of the front pressure plate can be adjusted according to the length of the soft plate.

[0053] like Figures 7-8 As shown, the side movable structure includes side mounting seats 39 installed on both sides of the main frame 31. Side movable belts 41 are mounted on the two side mounting seats 39 via rotating wheels and driven by side movable motors 40. The side movable belts 41 are connected to two side movable seats 42 that can move in opposite directions or back to back. Side movable seats 42 are provided with side lifting cylinders 43, and the side lifting cylinders 43 are connected to right-angled side pressure blocks 33.

[0054] The side movable structure is driven by the side movable motor 40 to operate the side movable belt 41, which in turn drives the two side movable seats 42 connected to the side movable belt 41 with a phase difference of 180 degrees to move towards each other or away from each other. This allows the two side pressure blocks 33 to move inward and outward. When a pressure plate is needed, the two side pressure blocks 33 are moved towards each other until the vertical parts of the two side pressure blocks 33 are intercepted by the outer edge of the main frame 31. Then, the side lifting cylinder 43 drives the side pressure blocks 33 to descend, thereby achieving the side pressing of the soft plate.

[0055] like Figure 9 As shown, the rear movable structure includes a rear mounting block 49 installed on the rear side of the main frame 31. A rotatable rear pressure plate cylinder 50 is installed on the rear mounting block 49. The rear pressure plate cylinder 50 is connected to a rear pressure plate connecting block 51. The rear pressure block 34 is right-angled and installed on the rear pressure plate connecting block 51. The side of the rear pressure plate connecting block 51 is cylindrical and inserted into the rear pressure plate movable groove 52 opened on the rear mounting block 49. The lower part of the rear pressure plate movable groove 52 is a square groove and the upper part is an arc groove.

[0056] Due to limited space, to avoid interference with the front and side moving parts, the rear moving structure uses a hinged rear pressure plate cylinder 50 to drive the rear pressure plate connecting block 51 to move along the pressure plate moving groove 52. When the pressure plate connecting block 51 is in the lower square groove of the pressure plate moving groove 52, it moves up and down, driving the rear pressure block 34 up and down. When it is in the upper arc groove, it moves outward in an arc shape, driving the rear pressure block 34 to move outward in an arc shape and disengage from the suction plate 32. When pressure is needed, the rear pressure plate cylinder 50 simply retracts, first driving the rear pressure block 34 to move in an arc shape above the suction plate 32, and then lowers to achieve the pressing of the soft plate.

[0057] like Figure 10-11 As shown, the calibration device includes a calibration box 61 arranged on the front and rear sides of the workpiece stage 3. The calibration box 61 contains a calibration motor 63, two calibration drums 64, and two take-up / unwind drums 66. Each of the two take-up / unwind drums 66 is equipped with a calibration tape roll, and the two calibration tape rolls are made of the same calibration tape 67. The calibration tape 67 passes around the two calibration drums 64, and the upper plate of the calibration box 61, located between the two calibration drums 64, has a calibration opening matching the width of the calibration tape 67. The shafts of the two calibration drums 64 are connected to the calibration transmission belt 65 via pulleys, and the calibration transmission belt 65 is driven by the calibration motor 63. One end of the shaft of the take-up and untake-down drum 66 is equipped with a pulley that cooperates with the calibration transmission belt 65, and the other end of the shaft of the take-up and untake-down drum 66 is connected to a manual tensioning wheel 68. The side of the calibration box 61 is provided with a manual tensioning port 62 that cooperates with the manual tensioning wheel 68. The upper plate and side plate of the calibration box 61 are openable and closable.

[0058] The specific operation of the calibration device is as follows: First, the inkjet head prints ink points on the calibration belt 67. The positioning camera collects the coordinates of the ink points, thus providing feedback on the initial position coordinates of the inkjet head. Simultaneously, the positioning camera also collects the coordinates of the flexible board on the workpiece stage 3 by capturing 3-4 mark points. The position coordinates of the inkjet head and the coordinates of the flexible board are calculated to complete the alignment compensation calculation. After that, the inkjet head is controlled to perform alignment compensation to complete the text printing. When printing on the next workpiece, the calibration motor 63 drives the calibration conveyor belt 65 to operate, causing one of the two take-up and unwinding drums 66 to unwind and the other to rewind, thus replacing the calibration belt 67 between the two calibration drums 64. During use, since both are belt-driven, it is easy for a single calibration drum 64 or a single take-up and unwinding drum 66 to rotate too fast or too slow, resulting in the calibration belt 67 being overly taut or slack. The tension can be adjusted by turning the manual tensioning wheel 68.

[0059] like Figures 12-15As shown, the frame 1 is also equipped with a glue-separating horizontal movement mechanism that is offset in height from the suction horizontal movement lifting mechanism. The glue-separating horizontal movement mechanism is connected to a glue-separating paper mechanism 9 that cooperates with the qualified product collection box 5 or the unqualified product collection box 6. The glue-separating paper mechanism includes a glue-separating box 71 connected to the glue-separating horizontal movement mechanism. A glue-separating picking and placing device 74 is provided inside the glue-separating box 71. The glue-separating picking and placing device 74 includes a glue-separating mounting seat 76 set in the glue paper frame 75. The glue-separating mounting seat 76 is connected to a first glue-separating lifting seat 78 through a glue-separating lifting cylinder 77. The first glue-separating lifting seat 78... An adhesive-separating lifting motor 80 is installed on the 8. The adhesive-separating lifting motor 80 is connected to an adhesive-separating lifting screw 81 through the internal threaded nut of the adhesive-separating lifting motor 80. The upper end of the adhesive-separating lifting screw 81 is connected to a second adhesive-separating lifting seat 82. The second adhesive-separating lifting seat 82 is connected to an adhesive-separating suction block 84. An adhesive-separating suction device 85 is provided below the adhesive-separating suction block 84. A first lifting guide rod 79 is provided between the adhesive-separating mounting seat 76 and the first adhesive-separating lifting seat 78. A second lifting guide rod 83 is provided between the first adhesive-separating lifting seat 78 and the second adhesive-separating lifting seat 82.

[0060] First, the device moves to the adhesive paper picking and placing station via the adhesive lateral movement mechanism. Then, the adhesive lateral lifting cylinder 77 drives the first adhesive lateral lifting seat 78 to descend. Next, the adhesive lateral lifting motor 80 rotates a corresponding number of revolutions according to the number of adhesive papers in the adhesive paper frame, driving the second adhesive lateral lifting seat 82 to descend. This allows the adhesive lateral suction device 85 to contact the adhesive papers in the adhesive paper frame and suck them away. Then, the adhesive lateral lifting cylinder 77 and the adhesive lateral lifting motor 80 return to their original positions. Then, the device moves to the corresponding adhesive lateral position via the adhesive lateral movement mechanism. The adhesive lateral lifting cylinder 77 drives the first adhesive lateral lifting seat 78 to descend. Next, the adhesive lateral lifting motor 80 rotates a corresponding number of revolutions according to the number of flexible boards in the defective or qualified product collection box, causing the adhesive paper sucked by the adhesive lateral suction device 85 to contact the flexible board. Then, the adhesive lateral suction device 85 releases its adsorption of the adhesive paper, thus achieving the adhesive lateral separation operation for the flexible board.

[0061] like Figure 12-13 As shown, the separator box 71 is equipped with a separator motor 72 and a separator belt 73 driven by it. The separator mounting base 76 is connected to the separator belt 73, and the separator mounting base 76 also cooperates with the transverse slide rail provided on the separator box 71. The separator box 71 is also equipped with a tape frame 75, which is also connected to the separator belt 73. The phase difference between the tape frame 75 and the connection points of the separator mounting base 76 and the separator belt 73 is 180 degrees.

[0062] When picking up and putting down adhesive tape, there is no need for the adhesive separation lateral movement mechanism to move. The adhesive separation motor 72 drives the adhesive separation belt 73 to operate, thereby causing the adhesive tape frame 75 and the adhesive separation picking and putting device 74 to move towards each other, so that the adhesive separation picking and putting device 74 is on the adhesive tape frame 75. Then, the adhesive tape is picked up. After the adhesive tape is picked up, the adhesive separation belt 73 returns to its original position, so that the adhesive separation picking and putting device 74 is in the adhesive tape feeding state. Then, the adhesive separation lateral movement mechanism moves the entire adhesive tape box 71 to the corresponding defective product collection box or qualified product collection box for adhesive tape feeding.

[0063] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0064] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A text printing device specifically for flexible printed circuit boards, comprising a frame (1), a workpiece table (3) connected to the frame (1) via a front-to-back movable structure, a material box (4), a qualified product collection box (5), a defective product collection box (6), and a printing stand (2) provided on the frame (1), wherein the printing stand (2) is provided with a printing device and a positioning camera that cooperate with the flexible printed circuit board (21) on the workpiece table (3), and a suction device (7) for picking up and placing the flexible printed circuit board (21) is connected to the frame (1) via a suction and horizontal lifting mechanism (8), characterized in that, The suction device (7) includes a suction plate (14) connected to the suction horizontal lifting mechanism (8). The suction plate (14) is connected to a suction structure for picking up and placing the soft board (21) and a clamping structure for pressing the edge of the soft board (21) during the picking up and placing process. The workpiece stage (3) is provided with a calibration device on the front and rear sides. The calibration device is used to cooperate with the inkjet printing device and the positioning camera to display the initial inkjet printing coordinates. Specifically, during the process of the workpiece stage (3) moving to the bottom of the inkjet printing device, the rear calibration device moves to the bottom of the inkjet printing device first and performs one inkjet printing. After the movement is completed, the inkjet printing device performs one inkjet printing on the front calibration device. The positioning camera captures the mark point on the soft board (21) to position the soft board and captures the inkjet point on the calibration device to position the initial position of the inkjet printing device.

2. The text printing equipment specifically for flexible printed circuit boards according to claim 1, characterized in that, The suction lifting and traversing mechanism (8) includes a suction traversing device (11) and a suction lifting device (12). The suction lifting device (12) is provided with a suction mounting block (13). The suction plate (14) is mounted on the suction mounting block (13) through a suction mounting groove (15). A suction mounting column (16) is installed at the lower part of the suction plate (14). The suction structure includes a suction cup (19) mounted at the lower part of the suction mounting column (16) by a buffer spring. The clamping structure includes a suction cup (19) mounted at the lower part of the suction mounting column (16) by a buffer spring. The suction connection block (18) is installed, and the suction pressure block (20) is connected below the suction connection block (18). The lower end of the suction cup (19) and the lower end of the suction pressure block (20) are at the same height. The suction cup (19) is used to pick up the soft plate (21). The suction pressure block (20) is used to press the edge of the soft plate (21) when the suction cup (19) picks up the soft plate (21) or places the soft plate (21). The suction plate (14) is a metal plate. The upper part of the suction mounting column (16) is a magnet. The suction mounting column (16) and the suction plate (14) are connected by magnetic adsorption.

3. The text printing equipment specifically for flexible printed circuit boards according to claim 2, characterized in that, The suction block (20) has a structure that protrudes inward from the middle, and the suction connecting block (18) is connected to the middle of the suction block (20). The suction block (20) has a bolt hole (22) that runs from bottom to top, and is locked to the suction connecting block (18) by bolts. The lower part of the bolt hole (22) is a groove that mates with the bolt head. The bolt head used to lock the suction block (20) and the suction connecting block (18) is completely inside the groove.

4. The text printing equipment specifically for flexible printed circuit boards according to claim 1, characterized in that, The workpiece stage (3) includes a main frame (31) and a suction plate (32). A support block (36) is provided inside the main frame (31), and the main frame (31) is connected to an air extraction structure. A side pressure block (33) is connected to the main frame (31) through a side movable structure, a front pressure block (35) is connected to the front movable structure, and a rear pressure block (34) is connected to the rear movable structure. The side pressure block (33), the rear pressure block (34), and the front pressure block (35) can all detach from the suction plate (32) when the plate is placed. After the plate is placed, the four sides of the soft plate on the suction plate (32) are pressed. An adsorption ring (53) is provided on the suction plate (32), and an adsorption hole (54) communicating with the inner cavity of the main frame (31) is provided at the bottom of the adsorption ring (53).

5. A text printing device specifically for flexible printed circuit boards according to claim 4, characterized in that, The front movable structure includes a sliding block (37) that runs through the main frame (31). The sliding block (37) and the suction plate (32) are provided with a sliding groove (38) that runs through the top and bottom. The bottom of the main frame (31) is provided with a front movable motor (44) and a front movable belt (45) that cooperate with each other. The front movable belt (45) is connected to a front movable seat (46) that cooperates with a sliding rail that runs back and forth at the bottom of the main frame (31). A front lifting cylinder (47) is provided on the front movable seat (46). The front lifting cylinder (47) is connected to a front pressure block (35) through a connecting rod that runs through the sliding groove (38).

6. A text printing device specifically for flexible printed circuit boards according to claim 4, characterized in that, The side movable structure includes side mounting seats (39) installed on both sides of the main frame (31). Side movable belts (41) are mounted on the two side mounting seats (39) via rotating wheels and driven by side movable motors (40). The side movable belts (41) are connected to two side movable seats (42) that can move in opposite directions or in opposite directions. A side lifting cylinder (43) is provided on the side movable seat (42). The side lifting cylinder (43) is connected to a right-angled side pressure block (33).

7. A text printing device specifically for flexible printed circuit boards according to claim 4, characterized in that, The rear movable structure includes a rear mounting block (49) installed on the rear side of the main frame (31). A rotatable rear pressure plate cylinder (50) is installed on the rear mounting block (49). The rear pressure plate cylinder (50) is connected to a rear pressure plate connecting block (51). The rear pressure block (34) is right-angled and installed on the rear pressure plate connecting block (51). The side of the rear pressure plate connecting block (51) is cylindrical and inserted into the rear pressure plate movable groove (52) opened on the rear mounting block (49). The lower part of the rear pressure plate movable groove (52) is a square groove and the upper part is an arc groove.

8. A text printing device specifically for flexible printed circuit boards according to claim 1, characterized in that, The calibration device includes a calibration box (61) arranged on the front and rear sides of the workpiece stage (3). The calibration box (61) contains a calibration motor (63), two calibration drums (64), and two take-up and undo drums (66). Each of the two take-up and undo drums (66) is equipped with a calibration tape roll, and the two calibration tape rolls are made of the same calibration tape (67). The calibration tape (67) passes around the two calibration drums (64). The upper plate of the calibration box (61) is positioned between the two calibration drums (64) and has a calibration opening matching the width of the calibration tape (67). The shaft of the calibration drum (64) is connected to the calibration transmission belt (65) via a pulley, and the calibration transmission belt (65) is driven by the calibration motor (63). One end of the shaft of the take-up and untake-down drum (66) is equipped with a pulley that cooperates with the calibration transmission belt (65), and the other end of the shaft of the take-up and untake-down drum (66) is connected to a manual tensioning wheel (68). The side of the calibration box (61) is provided with a manual tensioning port (62) that cooperates with the manual tensioning wheel (68). The upper plate and side plate of the calibration box (61) are openable and closable.

9. A text printing device specifically for flexible printed circuit boards according to claim 1, characterized in that, The frame (1) is also provided with a glue-separating transverse movement mechanism that is offset in height from the suction transverse movement lifting mechanism. The glue-separating transverse movement mechanism is connected to a glue-separating paper mechanism (9) that cooperates with the qualified product collection box (5) or the unqualified product collection box (6). The glue-separating paper mechanism includes a glue-separating box (71) connected to the glue-separating transverse movement mechanism. A glue-separating picking and placing device (74) is provided in the glue-separating box (71). The glue-separating picking and placing device (74) includes a glue-separating mounting seat (76) provided in the glue paper frame (75). The glue-separating mounting seat (76) is connected to a first glue-separating lifting seat (78) through a glue-separating lifting cylinder (77). The first glue-separating lifting seat (78) is equipped with a glue-separating paper mounting seat (78). There is a glue-separating lifting motor (80), and the glue-separating lifting motor (80) is connected to a glue-separating lifting screw (81) through the internal thread of the glue-separating lifting motor (80). The upper end of the glue-separating lifting screw (81) is connected to a second glue-separating lifting seat (82), and the second glue-separating lifting seat (82) is connected to a glue-separating suction block (84). A glue-separating suction device (85) is provided below the glue-separating suction block (84). A first lifting guide rod (79) is provided between the glue-separating mounting seat (76) and the first glue-separating lifting seat (78), and a second lifting guide rod (83) is provided between the first glue-separating lifting seat (78) and the second glue-separating lifting seat (82).

10. A text printing device specifically for flexible printed circuit boards according to claim 9, characterized in that, The diaphragm box (71) is equipped with a diaphragm movable motor (72) and a diaphragm movable belt (73) driven by it. The diaphragm mounting seat (76) is connected to the diaphragm movable belt (73), and the diaphragm mounting seat (76) also cooperates with the transverse slide rail provided on the diaphragm box (71). The diaphragm box (71) is also equipped with a tape frame (75), and the tape frame (75) is also connected to the diaphragm movable belt (73). The phase difference between the tape frame (75) and the connection points of the diaphragm mounting seat (76) and the diaphragm movable belt (73) is 180 degrees.

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