CN115593087A - PCB printing device - Google Patents

Abstract

The invention discloses a PCB printing device, which belongs to the field of printing devices and comprises a rack, wherein a hole plugging printing box, a first green oil printing box and a second green oil printing box are sequentially arranged on the top end surface of the rack from one side to the other side, a double-layer dislocation plate feeding structure and a silk screen deformation-prevention printing structure are respectively arranged inside the hole plugging printing box, the first green oil printing box and the second green oil printing box, and the double-layer dislocation plate feeding structure is used for sequentially feeding PCB plates into the lower part of the silk screen deformation-prevention printing structure in a dislocation manner; the inner parts of the hole plugging printing box, the first green oil printing box and the second green oil printing box are jointly connected with a turnover transfer structure, the turnover transfer structure is used for turning over the PCB and transferring the PCB backwards, and an adjustable board connecting structure is fixedly connected to one side face of the rack and used for receiving the transferred PCB. The invention can synchronously complete turnover in the process of transferring the PCB without extra turnover time, and can transfer the PCB immediately after printing each time, thereby having higher efficiency.

Description

PCB printing device

Technical Field

The invention relates to a printing device, in particular to a PCB printing device.

Background

PCBs, i.e., printed circuit boards, also known as printed circuit boards and printed circuit boards, are important electronic components, support bodies for electronic components, and providers of electrical connections for electronic components. A common manufacturing process is screen printing.

The existing printing device for the PCB is mainly used for printing green oil on one surface after hole plugging is carried out, then printing green oil on the other surface is carried out, extra turnover time is needed in the middle, the printed PCB needs to be transferred after printing at each time to send the PCB next time, the efficiency is low, and the whole working efficiency of the printing device is low. Accordingly, one skilled in the art provides a PCB printing apparatus to solve the problems set forth in the above background art.

Disclosure of Invention

The present invention is directed to a PCB printing apparatus, which can synchronously turn a PCB during transferring the PCB, does not require additional turning time, can transfer the PCB immediately after printing each time, and has high efficiency, so as to solve the problems of the related art.

In order to achieve the purpose, the invention provides the following technical scheme:

a PCB printing device comprises a rack, wherein a hole plugging printing box, a first green oil printing box and a second green oil printing box are sequentially arranged on the top end face of the rack from one side to the other side, a double-layer dislocation plate feeding structure and a silk screen deformation-preventing printing structure are arranged inside each of the hole plugging printing box, the first green oil printing box and the second green oil printing box, the double-layer dislocation plate feeding structure is used for sequentially feeding a PCB into the position below the silk screen deformation-preventing printing structure in a staggered mode, the silk screen deformation-preventing printing structure in the hole plugging printing box is used for performing hole plugging printing on the PCB, the silk screen deformation-preventing printing structure in the first green oil printing box is used for performing green oil printing on one side of the PCB, and the silk screen deformation-preventing printing structure in the second green oil printing box is used for performing green oil printing on the other side of the PCB; the inner parts of the plug hole printing box, the first green oil printing box and the second green oil printing box are jointly connected with a turnover transfer structure, the turnover transfer structure is used for turning over the PCB and transferring the PCB backwards, and an adjustable connecting plate structure is fixedly connected to one side face of the rack and used for receiving the transferred PCB.

As a further scheme of the invention: the structure is transferred in upset specifically includes: the three transverse guide who is the style of calligraphy row-out, the centre transverse guide both ends are connected both sides transverse guide's bottom, every the transverse guide bottom is equipped with the slip diaphragm, and the slip diaphragm can remove in the transverse guide bottom through motor and lead screw cooperation, the bottom face both sides swing joint of slip diaphragm has the gusset, and gusset side fixedly connected with vertical drag link plate, vertical drag link plate lateral surface bottom is equipped with the lifter plate, and the lifter plate can go up and down at vertical drag link plate lateral surface through motor and drag chain cooperation, same two lifter plate bottom symmetry fixedly connected with upset motor on the slip diaphragm, and upset motor output shaft fixedly connected with air jig, two be equipped with interval adjustment mechanism between the gusset.

As a still further scheme of the invention: the interval adjustment mechanism specifically includes: the distance adjusting device comprises two motor supporting plates which are fixed in the middle of one side face of a sliding transverse plate in parallel, the top ends of the two motor supporting plates are symmetrically and fixedly connected with a distance adjusting motor, an output shaft of the distance adjusting motor is fixedly connected with a distance adjusting lead screw, one side, close to the distance adjusting motor, of the top end face of the rib plate is fixedly connected with a lead screw supporting seat, and one end of the distance adjusting lead screw penetrates through the corresponding lead screw supporting seat and is in threaded connection with the lead screw supporting seat.

As a still further scheme of the invention: double-deck dislocation send board structure specifically includes: the bottom plate is arranged in a bottom groove of the concave plate, first linear guide rails are arranged on two sides of the bottom end surface of the concave plate, second linear guide rails are arranged on two sides of the bottom end surface of the bottom plate, plate placing assemblies are arranged on the bottom plate and the top end surface of the concave plate, and the plate placing assemblies on the bottom plate can shuttle from the bottom groove of the concave plate; the plate placing assembly comprises a supporting block fixed on the top end surfaces of the bottom plate and the concave plate, the top end of the supporting block is fixedly connected with a bottom table panel, a printing table plate is arranged at the top end of the bottom table panel, a table plate pushing mechanism is arranged between the bottom end surface of the printing table plate and the bottom end surface of the bottom table panel and used for pushing the printing table plate to move on the bottom table panel, and at least three stroke adjusting mechanisms are arranged on the outer side surface of the printing table plate.

As a still further scheme of the invention: the platen pushing mechanism specifically comprises: the printing table comprises a first cylinder, a second cylinder and a plurality of rectangular grooves, wherein the rectangular grooves are distributed in an array mode and are formed in the bottom end face of a bottom table panel, one end of the first cylinder is connected to the bottom end face of the bottom table panel in a rotating mode, the output end of the first cylinder is connected with a first shaft rod in a rotating mode, the first shaft rod penetrates through one rectangular groove and is fixedly connected with the bottom end face of the printing table plate, the second cylinder is located on one side of the first cylinder, one end of the second cylinder is connected to the bottom end face of the bottom table panel in a rotating mode, the output end of the second cylinder is connected with a second shaft rod in a rotating mode, and the second shaft rod penetrates through the other rectangular groove and is fixedly connected with the bottom end face of the printing table plate.

As a still further scheme of the invention: the stroke adjustment mechanism specifically comprises: the adjusting base is embedded on the outer side face of the printing platen, an adjusting screw is connected to the inner thread of the adjusting base, an adjusting handle is fixedly connected to one end of the adjusting screw through a screw, the adjusting handle is sleeved outside the adjusting base and can move, the other end of the adjusting screw penetrates through the adjusting base and extends into the printing platen, an adjusting block is fixedly connected to the top end face of the bottom platen on one side of the adjusting screw, and the side face of the adjusting block faces the other end of the adjusting screw.

As a still further scheme of the invention: the silk screen shape printing structure of preapring for an unfavorable turn of events specifically includes: the horizontal slide, the top of horizontal slide is equipped with the transmission cover plate, and a side sliding connection of horizontal slide has the connecting seat, be equipped with the tow chain in the transmission cover plate and be connected with horizontal slide and drive the connecting seat through servo motor and control on horizontal slide and move, and the side fixedly connected with liftable of connecting seat scrapes printer head, horizontal slide both sides fixedly connected with arm board, and be equipped with the outer frame body between two arm boards, the inside screw through of outer frame body can be dismantled and be connected with the net frame, and the both sides border position fixedly connected with connecting block of outer frame body, the below of arm board is equipped with the bar lifter plate, and is equipped with elevating system between bar lifter plate and the arm board, the connecting block rotates with bar lifter plate tip to be connected, with one side two be equipped with cam mechanism between connecting block and the bar lifter plate that corresponds.

As a still further scheme of the invention: the cam mechanism specifically comprises: fix the first round platform at bar lifter plate tip, first round platform side center fixedly connected with second round platform, and second round platform side center fixedly connected with thread end, oil-free bush supports in first round platform side in having cup jointed in the outside of second round platform, and the cam has been cup jointed to interior oil-free bush outside, outer oil-free bush has been cup jointed to the outside of cam, and outer oil-free bush inlays to be established in the slotted hole of seting up in the connecting block side, the gasket has been cup jointed in the thread end outside, and gasket one side is equipped with fastening nut, fastening nut can support the gasket on the second round platform at the overhead rotation of thread.

As a still further scheme of the invention: the adjustable fishplate bar structure specifically comprises: the material receiving box is fixed on one side face of the rack, two parallel adjusting grooves are formed in the inner bottom end face of the material receiving box, a middle pushing mechanism is arranged in each adjusting groove, and a push plate mechanism is arranged in the middle of the inner bottom end face of the material receiving box; the push plate mechanism comprises a rectangular fixing plate and a strip-shaped fixing plate, the rectangular fixing plate and the strip-shaped fixing plate are respectively fixed on two sides of the middle position of the bottom end face inside the material receiving box, a first driving motor is fixedly connected to the bottom end face of the rectangular fixing plate, an output shaft at the top of the first driving motor penetrates through the rectangular fixing plate, a synchronizing wheel guard plate is fixedly connected to the middle position of the top end face of the strip-shaped fixing plate, a first driving belt is connected between the inside of the synchronizing wheel guard plate and the output shaft at the top of the first driving motor through synchronizing wheel transmission, a first belt connecting block is fixedly connected to the outer side face of the first driving belt, a push plate is fixedly connected to the top end of the first belt connecting block, and limiting guide mechanisms are arranged on two sides of the first driving belt.

As a still further scheme of the invention: the middle pushing mechanism specifically comprises: the setting is at the line rail support frame of receiving the inside bottom of workbin, the top face bilateral symmetry fixedly connected with straight line track of line rail support frame, and sliding connection has the slider on the straight line track, with one side two the common fixedly connected with mount in slider top, and the top of mount stretches out and fixedly connected with curb plate, two from the adjustment tank the opposite face of curb plate rotates and is connected with the cone pulley that a plurality of level parallels, two be equipped with the driving piece between the mount.

Compared with the prior art, the invention has the beneficial effects that:

1. this application can send out the back well in a PCB board printing, send into another PCB board next time, and the PCB board of sending out is transferred and is put into the PCB board again after next process, waits for another PCB board to send out the back and send into next time, just so the double-deck dislocation that orders does not have intermittent type printing, improves work efficiency.

2. This application can adjust the position of printing platen after brushing green oil through platen pushing mechanism for certain dislocation takes place for the printing platen, thereby green oil second time printing is in different positions when the return stroke, guarantees that this one side of PCB board can print completely, improves the printing effect.

3. This application can adjust and restrict the dislocation degree of printing platen through stroke adjustment mechanism, avoids printing platen dislocation too much to influence the printing.

4. This application can provide certain rising space when mentioning screen frame one side through the cam mechanism who sets up to can protect screen frame and silk screen, avoid them deformation impaired.

5. This application can be fast smooth mention screen frame one side to make things convenient for the liftable to scrape the even china ink that printer head is better in the return stroke.

6. This application can push the PCB board of receiving to the intermediate position through push pedal mechanism to make things convenient for follow-up staff to get the board.

7. This application can carry out adaptability adjustment to accomplish the fishplate bar according to the width of PCB board through the mechanism in pushing away, still can promote the PCB board from both sides to the intermediate position.

8. This application can push the PCB board of receiving to the intermediate position through push pedal mechanism to make things convenient for follow-up staff to get the board.

9. This application can carry out adaptability adjustment to accomplish the fishplate bar according to the width of PCB board through mechanism in pushing away, still can promote the PCB board from both sides to the intermediate position.

10. This application transfers the structure through the upset that sets up, can deliver to next processing district with the PCB board in proper order, and can overturn the PCB board transferring the in-process, does not need extra upset time.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a PCB printing apparatus;

FIG. 2 is an internal view of a frame of a PCB printing apparatus;

FIG. 3 is a schematic structural view of a double-layer staggered board feeding structure in a PCB printing device;

FIG. 4 is a combined view of a base plate and a second linear guide rail in a PCB printing apparatus;

FIG. 5 is a side view of a bottom deck panel in a PCB printing apparatus;

FIG. 6 is a schematic view of a stroke adjusting mechanism of a PCB printing apparatus;

FIG. 7 is a schematic structural view of a screen anti-deformation printing structure in a PCB printing apparatus;

FIG. 8 is a side view of a screen anti-deformation printing structure in a PCB printing apparatus;

FIG. 9 is a view showing the combination of a hand plate and a strip-shaped lifting plate in a PCB printing apparatus;

FIG. 10 is an enlarged view of A of FIG. 9 of a PCB printing apparatus;

FIG. 11 is a schematic view of a cam mechanism of a PCB printing apparatus;

FIG. 12 is a schematic diagram of a flip-flop transfer structure of a PCB printing apparatus;

FIG. 13 is an enlarged view of B of FIG. 12 of a PCB printing apparatus;

FIG. 14 is a side view of an inverted transfer structure in a PCB printing apparatus;

FIG. 15 is a schematic view of a mechanism for adjusting the center distance of a PCB printing apparatus;

FIG. 16 is a schematic structural view of an adjustable tab structure in a PCB printing apparatus;

FIG. 17 is a schematic structural diagram of a pushing mechanism of a PCB printing apparatus;

FIG. 18 is a side view of a pusher mechanism of a PCB printing apparatus;

FIG. 19 is a schematic diagram of a centering mechanism of a PCB printing apparatus;

fig. 20 is a side view of a push-in mechanism in a PCB printing apparatus.

In the figure: 1. a concave plate; 2. a base plate; 3. a second linear guide; 4. a first linear guide rail; 5. a bottom deck panel; 6. a printing platen; 7. a strip-shaped groove; 8. a stroke adjusting mechanism; 801. an adjusting seat; 802. adjusting the screw rod; 803. an adjustment handle; 804. a steel ball; 805. a regulating block; 9. a first metal positioning block; 10. a second metal positioning block; 11. a first cylinder; 12. a second cylinder; 13. a support block; 14. a rectangular groove; 15. a transmission housing plate; 16. a transverse slide carriage; 17. a connecting seat; 18. the printing head can be lifted; 19. a armboard; 20. an outer frame body; 21. a screen frame; 22. connecting blocks; 23. a lifting motor; 24. an optical axis; 25. a guide plate; 26. lifting a screw rod; 27. a strip-shaped lifting plate; 28. a slot; 29. a first circular table; 30. a second circular table; 31. a screw head; 32. an inner oilless liner; 33. a cam; 34. an outer oilless liner; 35. a gasket; 36. fastening a nut; 37. a first circlip; 38. a second circlip; 39. a transverse guide rail; 40. sliding the transverse plate; 41. a rib plate; 42. a longitudinal drag chain plate; 43. a lifting plate; 44. turning over a motor; 45. a pneumatic clamp; 46. a PCB board; 47. a lead screw supporting seat; 48. a motor support plate; 49. a space adjusting motor; 50. a spacing adjustment screw; 51. a first electromagnet; 52. a material receiving box; 53. an adjustment groove; 54. a rectangular fixing plate; 55. a first drive motor; 56. a first drive belt; 57. a strip-shaped fixing plate; 58. a synchronizing wheel guard plate; 59. pushing the plate; 60. a first belt connecting block; 61. a linear bearing; 62. a guide shaft; 63. a wire rail support frame; 64. a linear track; 65. a slider; 66. a fixed mount; 67. a side plate; 68. a conical wheel; 69. a second drive motor; 70. a second drive belt; 71. a second belt connecting block; 72. a frame; 73. a hole plugging printing box; 74. a first green oil printing box; 75. a second green oil printing box; 76. a second electromagnet.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Referring to fig. 1 to 20, in an embodiment of the present invention, a PCB printing apparatus includes a frame 72, a plug hole printing box 73, a first green oil printing box 74 and a second green oil printing box 75 are sequentially disposed on a top end surface of the frame 72 from one side to another side, and a double-layer offset plate feeding structure and a screen anti-deformation printing structure are disposed inside each of the plug hole printing box 73, the first green oil printing box 74 and the second green oil printing box 75, the double-layer offset plate feeding structure is configured to sequentially feed the PCB 46 to a position below the screen anti-deformation printing structure, the screen anti-deformation printing structure in the plug hole printing box 73 is configured to perform plug hole printing on the PCB 46, the screen anti-deformation printing structure in the first green oil printing box 74 is configured to perform green oil printing on one side of the PCB 46, and the screen anti-deformation printing structure in the second green oil printing box 75 is configured to perform green oil printing on the other side of the PCB 46; the plug hole printing box 73, the first green oil printing box 74 and the second green oil printing box 75 are connected with a turnover transfer structure together, the turnover transfer structure is used for turning over the PCB 46 and transferring the PCB backwards, and an adjustable connecting plate structure is fixedly connected to one side face of the rack 72 and used for receiving the transferred PCB 46. The turnover mechanism can synchronously complete turnover in the process of transferring the PCB 46, does not need extra turnover time, and can send the PCB after printing at every time, so that the efficiency is high.

In this embodiment: the structure is transferred in upset specifically includes: the device comprises three transverse guide rails 39 which are arranged in a straight line, wherein two ends of a middle transverse guide rail 39 are connected with the bottom ends of the transverse guide rails 39 on two sides, a sliding transverse plate 40 is arranged at the bottom end of each transverse guide rail 39, the sliding transverse plate 40 can move at the bottom end of each transverse guide rail 39 through the cooperation of a motor and a lead screw, rib plates 41 are movably connected to two sides of the bottom end surface of the sliding transverse plate 40, longitudinal drag chain plates 42 are fixedly connected to the side surfaces of the rib plates 41, lifting plates 43 are arranged at the bottom ends of the outer side surfaces of the longitudinal drag chain plates 42, the lifting plates 43 can lift on the outer side surfaces of the longitudinal drag chain plates 42 through the cooperation of the motors and the drag chains, overturning motors 44 are symmetrically and fixedly connected to the bottom ends of the two lifting plates 43 on the same sliding transverse plate 40, pneumatic clamps 45 are fixedly connected to output shafts of the overturning motors 44, and spacing adjusting mechanisms are arranged between the two rib plates 41. The reverse transfer structure is capable of sequentially transferring the PCB boards 46 to the next processing area, and is capable of reversing the PCB boards 46 during the transfer.

In this embodiment: interval adjustment mechanism specifically includes: two motor support plates 48 that fix side by side at a lateral surface intermediate position of slip diaphragm 40, the top symmetry fixedly connected with interval adjustment motor 49 of two motor support plates 48, and interval adjustment motor 49's output shaft fixedly connected with interval adjustment lead screw 50, one side fixedly connected with lead screw supporting seat 47 that the gusset 41 top face is close to interval adjustment motor 49, interval adjustment lead screw 50 one end runs through corresponding lead screw supporting seat 47 and rather than threaded connection. The interval adjustment mechanism is provided to appropriately adjust the interval between the two air jigs 45 according to the width of the PCB 46.

In this embodiment: double-deck dislocation send board structure specifically includes: a bottom plate 2 is arranged in a bottom groove of the concave plate 1, first linear guide rails 4 are arranged on two sides of the bottom end surface of the concave plate 1, second linear guide rails 3 are arranged on two sides of the bottom end surface of the bottom plate 2, plate placing assemblies are arranged on the bottom plate 2 and the top end surface of the concave plate 1, and the plate placing assemblies on the bottom plate 2 can shuttle from the bottom groove of the concave plate 1; the plate placing assembly comprises a supporting block 13 fixed on the top end faces of the bottom plate 2 and the concave plate 1, the top end of the supporting block 13 is fixedly connected with a bottom table panel 5, a printing table plate 6 is arranged on the top end of the bottom table panel 5, a table plate pushing mechanism is arranged between the bottom end face of the printing table plate 6 and the bottom end face of the bottom table panel 5 and used for pushing the printing table plate 6 to move on the bottom table panel 5, and at least three stroke adjusting mechanisms 8 are arranged on the outer side face of the printing table plate 6. The double-layer staggered plate feeding structure can feed another PCB 46 after one PCB 46 is printed and fed out, the fed PCB 46 is transferred to the next procedure and then put into the PCB 46 again, and the other PCB 46 is fed out after waiting, so that the plate feeding is completed sequentially, and the working efficiency is improved.

In this embodiment: platen pushing mechanism specifically includes: first cylinder 11, second cylinder 12 and a plurality of rectangular channel 14, a plurality of rectangular channel 14 is the array distribution and sets up at the bottom end face of base platen panel 5, 11 one end of first cylinder is rotated and is connected on the bottom end face of base platen panel 5, and the output of first cylinder 11 rotates and is connected with first axostylus axostyle, first axostylus axostyle runs through a rectangular channel 14 and with 6 bottom end face fixed connection of printing platen, second cylinder 12 is located first cylinder 11 one side, and 12 one end of second cylinder rotate to be connected on the bottom end face of base platen panel 5, the output of second cylinder 12 rotates and is connected with the second axostylus axostyle, and the second axostylus axostyle runs through another rectangular channel 14 and with 6 bottom end face fixed connection of printing platen. The platen pushing mechanism can adjust the position of the printing platen 6 after the green oil is brushed, so that the printing platen 6 is dislocated to a certain extent, the green oil is printed at different positions for the second time in the return stroke, the PCB 46 can be printed completely, and the printing effect is improved.

In this embodiment: the second cylinder 12 is parallel to the first linear guide rail 4 and the second linear guide rail 3, and an included angle between the second cylinder 12 and the first cylinder 11 is forty-five degrees. When the second cylinder 12 operates alone, the printing bedplate 6 is displaced in the transverse direction, and when the second cylinder 12 operates simultaneously with the first cylinder 11, the printing bedplate 6 is displaced along the direction of the oblique angle of forty-five degrees.

In this embodiment: the stroke adjusting mechanism 8 specifically includes: the adjusting base 801 is embedded on the outer side surface of the printing platen 6, an adjusting screw 802 is connected to the inner thread of the adjusting base 801, one end of the adjusting screw 802 is fixedly connected with an adjusting handle 803 through a screw, the adjusting handle 803 is sleeved outside the adjusting base 801 to be movable, the other end of the adjusting screw 802 penetrates through the adjusting base 801 and extends into the printing platen 6, an adjusting block 805 is fixedly connected to the top end surface of the bottom platen 5 on one side of the adjusting screw 802, and the side surface of the adjusting block 805 faces the other end of the adjusting screw 802. The stroke adjusting mechanism 8 can adjust and limit the dislocation degree of the printing bedplate 6, and avoids the printing bedplate 6 from being dislocated too much to influence printing.

In this embodiment: the other end of the adjusting screw 802 is embedded with a movable steel ball 804. The steel ball 804 is provided to reduce friction between the adjustment screw 802 and the adjustment block 805.

In this embodiment: strip-shaped grooves 7 are symmetrically formed in two sides of the top end face of the printing bedplate 6. The arrangement of the strip-shaped groove 7 can facilitate the subsequent pneumatic clamp 45 to extend into the clamping device for clamping the PCB 46.

In this embodiment: the edge positions of two side surfaces of the bottom plate 2 are symmetrically and fixedly connected with first metal positioning blocks 9, and the edge positions of two side surfaces of the concave plate 1 are symmetrically and fixedly connected with second metal positioning blocks 10.

In this embodiment: the top end face of the frame 72 is fixedly connected with a first electromagnet 51 corresponding to the position of the first metal positioning block 9, and the top end face of the frame 72 is fixedly connected with a second electromagnet 76 corresponding to the position of the second metal positioning block 10. After the double-layer staggered plate conveying structure finishes plate conveying, the first metal positioning block 9 and the second metal positioning block 10 on the double-layer staggered plate conveying structure are respectively contacted with the corresponding first electromagnet 51 and the second electromagnet 76, the first electromagnet 51 and the second electromagnet 76 are electrified to generate magnetism to firmly adsorb the double-layer staggered plate conveying structure, the position is ensured to be accurate and not to deviate, then the power supplies of the first electromagnet 51 and the second electromagnet 76 are disconnected when the plate conveying is needed, and the double-layer staggered plate conveying structure is loosened.

In this embodiment: the silk screen printing structure of preapring for an unfavorable turn of events shape specifically includes: transverse sliding seat 16, transverse sliding seat 16's top is equipped with transmission cover plate 15, and a side sliding connection of transverse sliding seat 16 has connecting seat 17, be equipped with the tow chain in the transmission cover plate 15 and be connected with transverse sliding seat 16 and drive connecting seat 17 through servo motor and control about on transverse sliding seat 16, and the side fixedly connected with liftable of connecting seat 17 scrapes printer head 18, transverse sliding seat 16 both sides fixedly connected with armplate 19, and be equipped with outer frame body 20 between two armplate 19, the inside screen frame 21 that can dismantle through the screw of being connected with of outer frame body 20, and the both sides border position fixedly connected with connecting block 22 of outer frame body 20, the below of armplate 19 is equipped with bar lifter plate 27, and be equipped with elevating system between bar lifter plate 27 and the armplate 19, connecting block 22 is connected with bar lifter plate 27 tip rotation, be equipped with cam mechanism with one side between two connecting blocks 22 and the bar lifter plate 27 that correspond. The screen frame 21 and the screen can be protected by the screen anti-deformation printing structure, and deformation and damage of the screen frame and the screen are avoided.

In this embodiment: the cam mechanism specifically includes: fix the first round platform 29 at bar lifter plate 27 tip, first round platform 29 side center fixedly connected with second round platform 30, and second round platform 30 side center fixedly connected with thread head 31, interior oilless bush 32 and support in first round platform 29 side have been cup jointed to the outside of second round platform 30, and interior oilless bush 32 outside has cup jointed cam 33, cam 33's outside has cup jointed outer oilless bush 34, and outer oilless bush 34 inlays to be established in the slotted hole 28 that is seted up in connecting block 22 side, the outside gasket 35 that has cup jointed of thread head 31, and gasket 35 one side is equipped with fastening nut 36, fastening nut 36 can rotate on thread head 31 and support gasket 35 on second round platform 30. The cam mechanism can provide a certain rising space when the screen frame 21 side is lifted.

In this embodiment: a first circlip 37 is embedded in one side of the outer oilless bushing 34 inside the slot 28, and a second circlip 38 is embedded in the other side of the outer oilless bushing 34 inside the slot 28. The first circlip 37 and the second circlip 38 can block the two sides of the outer oilless liner 34, so as to ensure the stability and avoid the deviation.

In this embodiment: elevating system specifically includes: fix the elevator motor 23 at the intermediate position in arm board 19 top, elevator motor 23 bottom output shaft runs through arm board 19 and fixedly connected with elevating screw 26, and elevating screw 26 bottom runs through bar lifter plate 27 and rather than threaded connection, and the position fixedly connected with deflector 25 that both ends are close to a side of bar lifter plate 27, and the deflector 25 card goes into the liftable in the vertical slot that arm board 19 side was seted up. The lifting mechanism can drive the strip-shaped lifting plate 27 to lift up and down.

In this embodiment: optical axes 24 are arranged on two sides of the lifting motor 23, and the bottom ends of the optical axes 24 penetrate through the arm plate 19 and are fixedly connected with the strip-shaped lifting plate 27. The arrangement of the optical axis 24 can improve the stability of the strip-shaped lifting plate 27 in ascending and descending.

In this embodiment: adjustable fishplate bar structure specifically includes: the material collecting box 52 is fixed on one side face of the rack 72, two parallel adjusting grooves 53 are formed in the inner bottom end face of the material collecting box 52, a middle pushing mechanism is arranged in each adjusting groove 53, and a push plate mechanism is arranged in the middle of the inner bottom end face of the material collecting box 52; the push plate mechanism comprises a rectangular fixing plate 54 and a strip-shaped fixing plate 57, the rectangular fixing plate 54 and the strip-shaped fixing plate 57 are respectively fixed on two sides of the middle position of the bottom end face in the material receiving box 52, the bottom end face of the rectangular fixing plate 54 is fixedly connected with a first driving motor 55, an output shaft at the top of the first driving motor 55 penetrates through the rectangular fixing plate 54, a synchronizing wheel shield plate 58 is fixedly connected to the middle position of the top end face of the strip-shaped fixing plate 57, a first driving belt 56 is connected between the inside of the synchronizing wheel shield plate 58 and the output shaft at the top of the first driving motor 55 through synchronizing wheel transmission, a first belt connecting block 60 is fixedly connected on the outer side face of the first driving belt 56, a push plate 59 is fixedly connected to the top end of the first belt connecting block 60, and limiting guide mechanisms are arranged on two sides of the first driving belt 56. The pusher mechanism is capable of pushing the attached PCB 46 toward the neutral position.

In this embodiment: spacing guiding mechanism specifically includes: the linear bearing 61 is embedded in the bottom end of the side face of the push plate 59, the guide shaft 62 penetrates through the linear bearing 61, and two ends of the guide shaft 62 are fixedly connected with the rectangular fixing plate 54 and the strip-shaped fixing plate 57 respectively. In this arrangement, the linear bearing 61 is used in cooperation with the guide shaft 62, so that not only the movement direction of the push plate 59 can be restricted, but also the stability of the movement of the push plate 59 can be improved.

In this embodiment: push away mechanism specifically includes: the setting is at the linear rail support frame 63 of the inside bottom of receipts workbin 52, linear rail support frame 63's top face bilateral symmetry fixedly connected with straight line track 64, and sliding connection has slider 65 on straight line track 64, with the common fixedly connected with mount 66 in two slider 65 tops of one side, and the top of mount 66 stretches out and fixedly connected with curb plate 67 from adjustment tank 53, the opposite face of two curb plates 67 rotates and is connected with the cone pulley 68 that a plurality of level parallels, be equipped with the driving piece between two mounts 66. The centering mechanism can be adapted to the width of PCB board 46 to complete the joint.

In this embodiment: the driving piece specifically comprises: the second driving belt 70 is arranged between the bottoms of the two fixing frames 66, the bottom end face of each fixing frame 66 is close to the middle position and fixedly connected with a second belt connecting block 71, the two second belt connecting blocks 71 are fixedly connected with the second driving belt 70, one end of each second driving belt 70 is provided with a second driving motor 69, and the output end of each second driving motor 69 can drive the second driving belt 70 to rotate through a synchronizing wheel. The driving member can drive the two holders 66 toward or away from each other.

In this embodiment: at least three parallel weight-reducing grooves are formed in the side surface of the push plate 59. This arrangement serves to reduce the weight of the push plate 59 and facilitate the pushing of the push plate 59.

The working principle of the invention is as follows: when the device is used, firstly, the PCB 46 to be processed is sequentially placed on the double-layer staggered plate feeding structure in the plug hole printing box 73, in the placing process, after the PCB 46 is placed on the upper printing bedplate 6, the first linear guide rail 4 runs to feed the upper printing bedplate 6 and the PCB 46 to the lower part of the silk screen anti-deformation printing structure in the plug hole printing box 73. When the feeding of the PCB 46 is completed, the second electromagnet 76 is energized to generate magnetism to firmly attract the second metal positioning block 10. Subsequently, screen shape printing structure of preapring for an unfavorable turn of events carries out the consent printing to the PCB board 46 who sends into, and at this moment, the elevator motor 23 operation of both sides drives lift screw 26 and rotates, and then drives bar lifter plate 27 and descend the take the altitude, close at PCB board 46 until screen frame 21, descend the liftable afterwards and scrape printer head 18 and make it support on the screen of screen frame 21, remove about connecting seat 17 on horizontal slide 16 again and carry out printing technology, and in the printing process, the staff places PCB board 46 on the printing platen 6 of lower floor. After the hole plugging printing is completed, the upper printing platen 6 is sent out, the lower printing platen 6 is sent in to continue the hole plugging printing, and the printed PCB 46 on the upper printing platen 6 is sent to the next procedure by the turnover transfer structure, which specifically comprises the following steps: the lifting plates 43 are lowered by a certain height along the longitudinal drag link plates 42, then the spacing adjustment motor 49 operates to drive the spacing adjustment screw 50 to rotate, the screw support seats 47 on the rib plates 41 approach the spacing adjustment motor 49 along the spacing adjustment screw 50, and further drive the two lifting plates 43 to approach each other, so that the pneumatic clamps 45 extend into the strip-shaped grooves 7 to clamp the edges of the PCB 46, then the lifting plates 43 together with the PCB 46 are lifted and transferred to a next station, in the transfer process, the sliding transverse plates 40 move on the corresponding transverse guide rails 39, the turnover motor 44 operates to drive the pneumatic clamps 45 together with the PCB 46 to turn by one hundred eighty degrees, after the PCB 46 is transferred to the next station, the PCB 46 is lowered, so that the PCB 46 is seated on the upper printing platen 6 in the first green oil printing box 74, then the pneumatic clamps 45 are released, the turnover transfer structure returns to transfer the next PCB 46, and the pneumatic clamps 45 are lowered to a lower position when the PCB 46 on the lower printing platen 6 is transferred. The PCB 46 in the first green oil printing box 74 is sent to the lower part of the corresponding silk screen anti-deformation printing structure by the upper printing bedplate 6 to carry out the first green oil printing, and is sent out after the first green oil printing is finished. In this process, the next PCB 46 that has completed the receptacle printing is transferred by the inverted transfer structure to the lower printing platen 6 in the first green oil printing box 74, and this lower printing platen 6 transfers another PCB 46 to perform the first green oil printing. And the PCB 46 after the first green oil printing is sent to the upper printing platen 6 in the second green oil printing box 75 by the turnover and transfer structure, then the pneumatic clamp 45 is released, the turnover and transfer structure is restored to the original position again to transfer the next PCB 46, and the PCB 46 in the second green oil printing box 75 is sent to the lower part of the corresponding silk screen anti-deformation printing structure by the upper printing platen 6 to perform the second green oil printing, and the second green oil printing is sent out after the second green oil printing is completed. In this process, the next PCB 46 that has completed the first green oil printing is transferred to the lower printing platen 6 in the second green oil printing box 75 by the reverse transfer structure, at this time, the lower printing platen 6 transfers another PCB 46 to perform the second green oil printing, and the PCB 46 that has been transferred out to complete the second green oil printing is transferred to the two rows of tapered wheels 68 in the material receiving box 52 by the reverse transfer structure, and then the pneumatic clamp 45 is released, and the reverse transfer structure returns to the original position again to transfer the next PCB 46, so that the PCB 46 is transferred in a continuous cycle. And the PCB 46 falling on the two rows of cone-shaped wheels 68 can be pushed to the middle position by the push plate mechanism and the middle pushing mechanism, so that the PCB is convenient for the working personnel to take, and the method specifically comprises the following steps: the second driving motor 69 operates to drive the second driving belt 70 to rotate, so that two second belt connecting blocks 71 on the second driving belt 70 are close to each other, and then two fixing frames 66 are driven to be close to each other, and the conical wheels 68 of the upper side plates 67 of the two fixing frames 66 are also close to each other to push the PCB 46 to the middle position, and then the first driving motor 55 operates to drive the first driving belt 56 to rotate, the first belt connecting block 60 moves along with the movement, and the push plate 59 is driven to move to the middle position, so that the PCB 46 is pushed to move like the middle position. It should be noted that, in the process of performing green oil printing twice, in order to ensure that the liftable printing head 18 automatically homogenizes ink in the return stroke, one side of the screen frame 21 close to the initial state of the liftable printing head 18 is lifted to form an inclined state, specifically: mention 23 operation drive elevator screw 26 of lifting motor of side and rotate, and then drive bar lifter plate 27 and rise, the in-process, connecting block 22 and bar lifter plate 27 one end take place relative rotation, and setting up of cam 33 provides certain operating space for the rising of this side bar lifter plate 27, avoid the tradition to draw the promotion hard to cause the damage to screen frame 21 and silk screen, in addition, interior oilless bush 32 can play bearing function with outer oilless bush 34's cooperation use. And liftable scrape the in-process of printer head 18 at the return stroke, platen pushing mechanism can adjust the position of printing platen 6 after having brushed green oil for certain dislocation takes place for printing platen 6, thereby green oil second time printing is in different positions when the return stroke, guarantees that this one side of PCB 46 can print completely, improves the printing effect, specifically does, and printing platen 6 transversely takes place the dislocation when second cylinder 12 alone moves, and second cylinder 12 moves with first cylinder 11 simultaneously, and printing platen 6 takes place the dislocation along the forty-five degree direction of oblique angle. In addition, in order to avoid that the printing platen 6 is misplaced too much to affect the printing, the worker can twist the adjusting handle 803, and then drive the adjusting screw 802 to rotate, thereby adjusting the distance that the adjusting screw 802 stretches into the inside of the printing platen 6, which results in that, when misplacing the printing platen 6, if misplace too often to make one end of the adjusting screw 802 support on the adjusting block 805, the printing platen 6 can not continue to be misplaced and moved. It should be noted that the transverse guide rail 39 is fixed to the top end of the inner walls of the plug hole print box 73, the first green oil print box 74 and the second green oil print box 75, the rearmost transverse guide rail 39 extends into the top end of the interior of the material receiving box 52, the first linear guide rail 4 and the second linear guide rail 3 are fixed to the top end surface of the frame 72, and the transverse slide 16 is fixed to one side inner wall of the plug hole print box 73, the first green oil print box 74 and the second green oil print box 75.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Therefore, the present invention is not limited to the above embodiments, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention.

Claims (10)

1. A PCB printing device is characterized by comprising a rack, wherein a hole plugging printing box, a first green oil printing box and a second green oil printing box are sequentially arranged on the top end face of the rack from one side to the other side, a double-layer dislocation plate feeding structure and a silk screen deformation-preventing printing structure are arranged inside each of the hole plugging printing box, the first green oil printing box and the second green oil printing box, the double-layer dislocation plate feeding structure is used for sequentially feeding a PCB to the lower side of the silk screen deformation-preventing printing structure in a dislocation manner, the silk screen deformation-preventing printing structure in the hole plugging printing box is used for performing hole plugging printing on the PCB, the silk screen deformation-preventing printing structure in the first green oil printing box is used for performing green oil printing on one side of the PCB, and the silk screen deformation-preventing printing structure in the second green oil printing box is used for performing green oil printing on the other side of the PCB;

the inner parts of the plug hole printing box, the first green oil printing box and the second green oil printing box are jointly connected with a turnover transfer structure, the turnover transfer structure is used for turning over the PCB and transferring the PCB backwards, and an adjustable connecting plate structure is fixedly connected to one side face of the rack and used for receiving the transferred PCB.

2. The PCB printing apparatus of claim 1, wherein the flip-flop transfer structure comprises: the automatic lifting device comprises three transverse guide rails which are arranged in a straight line shape, wherein the two ends of each transverse guide rail are connected with the bottom ends of the transverse guide rails on two sides, each transverse guide rail bottom end is provided with a sliding transverse plate, the sliding transverse plates can move at the bottom ends of the transverse guide rails through the cooperation of a motor and a lead screw, two sides of the bottom end surface of each sliding transverse plate are movably connected with rib plates, longitudinal drag chain plates are fixedly connected to the side surfaces of the rib plates, lifting plates are arranged at the bottom ends of the outer side surfaces of the longitudinal drag chain plates, the lifting plates can lift at the outer side surfaces of the longitudinal drag chain plates through the cooperation of the motor and the drag chains, the same lifting plates on the sliding transverse plates are symmetrically and fixedly connected with turnover motors, turnover motors are fixedly connected with pneumatic fixtures at the bottom ends of the two lifting plates on each sliding transverse plate, and space adjusting mechanisms are arranged between the two rib plates.

3. The PCB printing device of claim 2, wherein the spacing adjustment mechanism comprises: the motor support plates are fixed in the middle of one side face of the sliding transverse plate in parallel, the top ends of the two motor support plates are symmetrically and fixedly connected with an interval adjusting motor, an output shaft of the interval adjusting motor is fixedly connected with an interval adjusting lead screw, one side, close to the interval adjusting motor, of the top end face of the rib plate is fixedly connected with a lead screw support seat, and one end of the interval adjusting lead screw penetrates through the corresponding lead screw support seat and is in threaded connection with the lead screw support seat.

4. The PCB printing device of claim 1, wherein the double-layer staggered plate feeding structure specifically comprises: the bottom plate is arranged in a bottom groove of the concave plate, first linear guide rails are arranged on two sides of the bottom end surface of the concave plate, second linear guide rails are arranged on two sides of the bottom end surface of the bottom plate, plate placing assemblies are arranged on the bottom plate and the top end surface of the concave plate, and the plate placing assemblies on the bottom plate can shuttle from the bottom groove of the concave plate; the plate placing component comprises a supporting block fixed on the top end surfaces of the bottom plate and the concave plate, the top end of the supporting block is fixedly connected with a bottom table panel, a printing table plate is arranged at the top end of the bottom table panel, a table plate pushing mechanism is arranged between the bottom end surface of the printing table plate and the bottom end surface of the bottom table panel and used for pushing the printing table plate to move on the bottom table panel, and at least three stroke adjusting mechanisms are arranged on the outer side surface of the printing table plate.

5. The PCB printing device of claim 4, wherein the platen pushing mechanism comprises: the printing table comprises a first cylinder, a second cylinder and a plurality of rectangular grooves, wherein the rectangular grooves are distributed in an array mode and are formed in the bottom end face of a bottom table panel, one end of the first cylinder is connected to the bottom end face of the bottom table panel in a rotating mode, the output end of the first cylinder is connected with a first shaft rod in a rotating mode, the first shaft rod penetrates through one rectangular groove and is fixedly connected with the bottom end face of the printing table plate, the second cylinder is located on one side of the first cylinder, one end of the second cylinder is connected to the bottom end face of the bottom table panel in a rotating mode, the output end of the second cylinder is connected with a second shaft rod in a rotating mode, and the second shaft rod penetrates through the other rectangular groove and is fixedly connected with the bottom end face of the printing table plate.

6. A PCB printing device as in claim 4 wherein the stroke adjustment mechanism comprises: the adjusting base is embedded on the outer side face of the printing platen, an adjusting screw is connected to the inner thread of the adjusting base, an adjusting handle is fixedly connected to one end of the adjusting screw through a screw, the adjusting handle is sleeved outside the adjusting base and can move, the other end of the adjusting screw penetrates through the adjusting base and extends into the printing platen, an adjusting block is fixedly connected to the top end face of the bottom platen on one side of the adjusting screw, and the side face of the adjusting block faces the other end of the adjusting screw.

7. The PCB printing device of claim 1, wherein the screen anti-deformation printing structure specifically comprises: the utility model discloses a horizontal slide, horizontal slide's top is equipped with the transmission cover plate, and a side sliding connection of horizontal slide has the connecting seat, be equipped with the tow chain in the transmission cover plate and be connected with horizontal slide and control through servo motor drive connecting seat control on horizontal slide, and the side fixedly connected with liftable of connecting seat scrapes printer head, horizontal slide both sides fixedly connected with arm board, and be equipped with the framework between two arm boards, the inside screw through of framework can dismantle the connection of ectonexine has the screen frame, and the both sides border position fixedly connected with connecting block of framework, the below of arm board is equipped with the bar lifter plate, and is equipped with elevating system between bar lifter plate and the arm board, the connecting block rotates with bar lifter plate tip to be connected, with one side two be equipped with cam mechanism between connecting block and the bar lifter plate that corresponds.

8. A PCB printing apparatus as in claim 7 wherein the cam mechanism comprises: fix the first round platform at bar lifter plate tip, first round platform side center fixedly connected with second round platform, and second round platform side center fixedly connected with thread head, oil-free bush supports in first round platform side in the outside of second round platform has been cup jointed, and the outside cam that has cup jointed of interior oil-free bush, outer oil-free bush has been cup jointed to the outside of cam, and outer oil-free bush inlays to establish in the slotted hole of seting up to the side of the connecting block, the gasket has been cup jointed to the thread head outside, and gasket one side is equipped with fastening nut, fastening nut can support the gasket on the second round platform at the overhead rotation of thread.

9. The PCB printing device of claim 1, wherein the adjustable tab structure specifically comprises: the material receiving box is fixed on one side face of the rack, two parallel adjusting grooves are formed in the inner bottom end face of the material receiving box, a middle pushing mechanism is arranged in each adjusting groove, and a plate pushing mechanism is arranged in the middle of the inner bottom end face of the material receiving box; the push plate mechanism comprises a rectangular fixing plate and a strip-shaped fixing plate, the rectangular fixing plate and the strip-shaped fixing plate are fixed on two sides of the middle position of the bottom end face inside the material receiving box respectively, a first driving motor is fixedly connected to the bottom end face of the rectangular fixing plate, an output shaft at the top of the first driving motor penetrates through the rectangular fixing plate, a synchronizing wheel shield plate is fixedly connected to the middle position of the top end face of the strip-shaped fixing plate, a first driving belt is connected between the inside of the synchronizing wheel shield plate and the output shaft at the top of the first driving motor through synchronizing wheel transmission, a first belt connecting block is fixedly connected to the outer side face of the first driving belt, a push plate is fixedly connected to the top end of the first belt connecting block, and limiting guide mechanisms are arranged on two sides of the first driving belt.

10. The PCB printing apparatus of claim 9, wherein the centering mechanism specifically comprises: the setting is at the line rail support frame of receiving the inside bottom of workbin, the top face bilateral symmetry fixedly connected with straight line track of line rail support frame, and sliding connection has the slider on the straight line track, with one side two the common fixedly connected with mount in slider top, and the top of mount stretches out and fixedly connected with curb plate, two from the adjustment tank the opposite face of curb plate rotates and is connected with the cone pulley that a plurality of level parallels, two be equipped with the driving piece between the mount.

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