Package printing conveying device

Abstract

The invention belongs to the technical field of package printing processing product transportation, and particularly relates to a package printing conveying device which comprises a printing discharging conveying belt, and an electric suction cup is arranged outside the printing discharging conveying belt and used for grabbing paper veneers on the printing discharging conveying belt. The material conveying belt is used for bearing the paper veneers put down by the electric suction cups, the two ends of the material conveying belt are provided with a material waiting area and a rear channel area respectively, and a righting mechanism is arranged outside the material conveying belt; the air blowing nozzle is arranged in the material conveying belt, and an elastic piece, a movable core and a push rod are sequentially arranged in the air blowing nozzle in the axial direction; and when the air blowing nozzles vertically blow air, the paper veneers are suspended through air flow, so that friction between the paper veneers and the material conveying belt is reduced. When the paper veneers are turned over, the paper veneers are suspended through vertical air outlet, friction is reduced, the safety of ink patterns in the conveying process is kept, or transverse air outlet blows an electric suction cup.

Description

Technical Field

[0001] The present invention belongs to the technical field of transportation of packaging and printing processed products, and specifically relates to a packaging and printing transmission device. Background Art

[0002] Carton packaging is made of natural materials, has a low density, a lower cost than wooden boxes, etc., and can be naturally decomposed. In addition, combined with printing technology, it can display brand, product information and protection tips, and is deeply loved by major manufacturers; it is mainly cut in units of cardboard, and each single board is printed with patterns, words or trademarks (it can also be laminated, embossed and gilded), and then sent to the bonding assembly line, with the back facing up, glued with glue, and folded to form a carton structure.

[0003] The transmission of single boards between the printing assembly line and the bonding assembly line often relies on manual stacking, turning over, and transportation by forklift, which is not conducive to improving production efficiency. Regarding the turning-over action during the transmission process, the following prior arts are retrieved: A Chinese invention with the publication number CN118144447A, a carton printing device capable of automatically turning over, moves the printed paper single board through a rotary turning rod between two adjacent conveyor belts, and falls from one conveyor belt to the belt of another conveyor belt; A Chinese invention with the publication number CN117533842A, an automatic turning-over printing device, in the interval of the conveyor belt, drives the clamping plate to rotate with a turning gear to realize the turning-over of the paper single board, and uses a cleaning component to automatically absorb and clean the residual grease outside the turning gear.

[0004] In summary, during the turning-over process of the paper single board after printing, the printing machine and the bonding machine are linked by a conveyor belt to realize an assembly line operation, and the paper single board is turned over, and the side with the ink pattern directly falls on the conveyor belt. In addition, there are intervals between the belts of the conveyor belt, which are likely to cause bumps, indentations or corners missing of the ink pattern, and are not conducive to maintaining the safety of the ink pattern during the transmission process. Summary of the Invention

[0005] The purpose of the present invention is to provide a packaging and printing transmission device, which, when turning over the paper single board, uses vertical air outlet to make the paper single board suspended to reduce friction and maintain the safety of the ink pattern during the transmission process, or uses horizontal air outlet to blow and sweep the electric suction cup.

[0006] The technical solution adopted by the present invention is specifically as follows: A packaging and printing transmission device includes a printing and discharging conveyor belt, and the outside of the printing and discharging conveyor belt is provided with: An electric suction cup for grasping the paper single board on the printing and discharging conveyor belt; The feeding conveyor belt is used to receive the paper single board put down by the electric suction cup. The two ends of the feeding conveyor belt are respectively provided with a waiting area and a back-end area, and a straightening mechanism is arranged outside the feeding conveyor belt; The blowing nozzle is arranged inside the feeding conveyor belt. An elastic member, a movable core, and a push rod are sequentially arranged along the axial direction inside the blowing nozzle; When the blowing nozzle blows air vertically, the paper single board is suspended by the airflow to reduce the friction between the paper single board and the feeding conveyor belt; When the blowing nozzle blows air horizontally, the opening of the blowing nozzle is opened by the movable core and the push rod, so that the airflow blows the electric suction cup.

[0007] As an alternative solution, a slot, a hanging piece, and an indicating piece are sequentially arranged along the radial direction outside the blowing nozzle; When the indicating piece contacts the ink, its color changes to indicate the abnormal state of the paper single board, and then the indicating piece is removed by pulling out the hanging piece.

[0008] As an alternative solution, the straightening mechanism includes a horizontal air cylinder, a straightening plate, a porous layer, and an oil film which are sequentially arranged horizontally; When the paper single board is suspended, the horizontal air cylinder pushes the straightening plate to drive the oil film to contact the paper single board, so that the paper single board is centered.

[0009] As an alternative solution, an installation rack and a baking lamp are sequentially arranged vertically on the top of the straightening plate, and the baking lamp avoids the electric suction cup and the blowing nozzle.

[0010] As an alternative solution, it further includes a vertical air cylinder, a bearing seat, a brake motor, and a support arm connected to the output end of the brake motor which are sequentially arranged vertically. The support arm is connected to the electric suction cup at a position far from the brake motor on the outside.

[0011] As an alternative solution, a suspension rod and a rotation motor for rotating the suspension rod are installed inside the feeding conveyor belt, and a communicating pipe communicating with the adjacent blowing nozzle is fixed outside the suspension rod.

[0012] As an alternative solution, step grooves and traction rods are arranged at intervals inside the blowing nozzle. The middle of the traction rod is connected to the bottom of the elastic member, a rubber sleeve is bonded between the top of the elastic member and the bottom of the movable core, and a rubber gasket is bonded between the top of the movable core and the bottom of the push rod.

[0013] As an alternative solution, a fan is arranged between the printing and feeding conveyor belt and the feeding conveyor belt, and a suspension frame is installed on the top of the fan; When the fan is started, it agitates the airflow to dry the ink on the paper single board.

[0014] As an alternative, a servo motor, a loading platform, and a lead screw penetrating the loading platform are vertically arranged in sequence in the material waiting area. The loading platform is penetrated at intervals by a vertical guide rail and an internally threaded pipe threadedly engaged with the lead screw.

[0015] As an alternative, a guardrail parallel to the material conveying belt is fixed to the top of the loading platform, and a fence avoiding the guardrail is fixed to the top of the vertical guide rail; When the paper veneer reversely disengages from the material conveying belt, the guardrail blocks the paper veneer for stacking.

[0016] The technical effects achieved by the present invention are as follows: The present invention is provided with at least two electric suction cups to alternately grasp the paper veneer, turn it over and place it on the material conveying belt. During the turning process, the air nozzle can vertically blow air, and the paper veneer can be suspended by the air flow to reduce the friction between the paper veneer and the material conveying belt, minimize the bumps, indentations or corners missing of the ink pattern as much as possible, maintain the safety of the ink pattern during transmission, and take away the excess moisture of the paper veneer to accelerate the drying of the plastic; the air nozzle can also be rotated to blow air horizontally, increase the input air pressure, open the opening of the air nozzle, and be able to blow air at a wide angle, so that the air flow blows the electric suction cup to sweep away impurities such as floating dust on the surface, which is convenient for keeping the surface of the electric suction cup clean, so as to reliably grasp the subsequent paper veneer.

[0017] The present invention is provided with an indicating piece at the air outlet. When it contacts the ink, its color changes to indicate the abnormal state of the paper veneer, prompting the staff that the ink on the paper veneer needs to be dried. Here, the transmission speed can be reduced, or it can stay at the air blowing place for a certain time to increase the drying time, and then the indicating piece is removed and replaced with a clean one.

[0018] On the one hand, the present invention detects the paper veneer flowing down after printing through machine vision and screens out defective parts. On the other hand, for the qualified paper veneer, after being suspended for feeding, a material waiting area and a back-end area are set. The paper veneer can be directly sent to the bonding production line along the back-end area, or when the production rhythm is relatively fast, the paper veneer can be temporarily stored in the material waiting area to facilitate coordinating the production rhythm between the automatic carton printing, slotting and die-cutting machine and the bonding production line, reducing material jams and blockages. After these paper veneers are stacked to a certain height, they are unloaded manually. Description of the Drawings

[0019] Figure 1 is the front view of a packaging and printing transmission device in an embodiment of the present invention; Figure 2 is the top view of the printing and blanking conveyor belt in an embodiment of the present invention; Figure 3 is the front view of the electric suction cup in an embodiment of the present invention; Figure 4is a rear view of the electric suction cup in an embodiment of the present invention; Figure 5 is a top view of a feeding conveyor belt in an embodiment of the present invention; Figure 6 is a rear view of the feeding conveyor belt in the embodiment of the present invention; Figure 7 is a schematic structural diagram of a blowing nozzle in an embodiment of the present invention; Figure 8 is a front view of the blowing nozzle in a static state in an embodiment of the present invention; Figure 9 is a cross-sectional view of the blowing nozzle in a static state in an embodiment of the present invention; Figure 10 is an exploded view of the blowing nozzle in a static state in an embodiment of the present invention; Figure 11 is a cross-sectional view of an embodiment of the present invention in which the blowing nozzle is in an open state; Figure 12 is an exploded view of the blowing nozzle in an open state in an embodiment of the present invention; Figure 13 is a front view of an indicator sheet in an embodiment of the present invention; Figure 14 is an exploded view of an indicator sheet in an embodiment of the present invention; Figure 15 2 is a schematic diagram of the structure of the material waiting area in an embodiment of the present invention; Figure 16 is a front view of the righting mechanism in an embodiment of the present invention; Figure 17 is a front view of a fan in an embodiment of the present invention; Figure 18 is a system block diagram of a central controller in an embodiment of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Printing blanking conveyor belt; 2. Electric suction cup; 201. Vacuum suction cup head; 202. Ring support; 3. Material conveying conveyor belt; 4. Blowing nozzle; 401. Connecting pipe; 402. Suspension rod; 403. Rotating motor; 5. Elastic member; 6. Movable core; 7. Push rod; 8. Slot; 9. Indicator piece; 901. Hanging piece; 10. Horizontal cylinder; 11. Aligning straight plate; 12. Porous layer; 13. Oil film; 14. Mounting bracket; 15. Baking lamp; 16. Jacket; 17. Handle bolt; 18. Vertical cylinder; 19. Bearing seat; 20. Brake motor; 21. Support arm; 22. Step groove; 23. Towing rod; 24. Rubber sleeve; 25. Rubber gasket; 26. Suspension frame; 27. Fan; 28. Vertical guide rail; 29. Loading platform; 30. Internal threaded pipe; 31. Servo motor; 32. Lead screw; 33. Guardrail; 34. Enclosure; 35. Gantry; 36. Visual detector; 37. Bad part tray; 38. Pressure stabilizing tank; 39. Electric air valve; 40. Air pump. Detailed implementation manners

[0021] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention.

[0022] As Figures 1 - 18 shown, a packaging and printing transmission device includes a printing blanking conveyor belt 1 and a material conveying conveyor belt 3, both of which are driven by motors. Refer to Figure 18, and both are also controlled by a central controller, which controls processing devices including a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processing (DSP) chip, a microprocessor (MCU), a field-programmable gate array (FPGA), a neural network processing unit (NPU), a tensor processing unit (TPU), an artificial intelligence (AI) type processor, etc. Among them, different processing units can be independent components or integrated in one or more processors. The central controller is equipped with an external touch screen liquid crystal display (LCD) and a touch display (also known as a "touch screen" or "touch display"). The display enables the user to interact with the user interface of the central controller to control the rotation direction, speed, etc. of the printing unloading conveyor belt 1 and the feeding conveyor belt 3 through a preset program or manually.

[0023] Among them, the printing unloading conveyor belt 1 can be connected to an automatic carton printing slotting and die-cutting machine (for example, the automatic flexographic printing slotting and die-cutting machine produced by Dongguan County Huayu Carton Machinery Co., Ltd.), receive the flowing paper veneers, and then rotate the paper veneers one by one and place them on the feeding conveyor belt 3, and turn them over completely. The two ends of the feeding conveyor belt 3 are respectively provided with a waiting area and a back-end area, wherein the back-end area is connected to the gluing assembly line (for example, the gluing machine produced by Dongguan County Xinyu Carton Machinery Manufacturing Co., Ltd., including folding, gluing, turning over, stacking, and automatic packaging). The feeding conveyor belt 3 can be rotated forward to send the paper veneer to the gluing assembly line; or the feeding conveyor belt 3 can be reversed to send the paper veneer to the waiting area for temporary storage.

[0024] Refer to the attached Figure 1 , Figure 2 and Figure 3 A gantry 35 and a visual detector 36 located in the middle of the gantry 35 are installed on the top of the printing unloading conveyor belt 1 by screws. The image of the paper single board is captured in real time by the visual detector 36 and transmitted to the central controller, and compared with the preset image in the memory. Based on any of deep learning methods, machine learning methods or reinforcement learning, abnormal parts (for example: crooked printing, missing, damaged, etc.) are screened out, and the printing unloading conveyor belt 1 is controlled to flow down the defective parts, so that the defective parts fall on the defective part tray 37, while the qualified paper single board stops and waits to be grabbed.

[0025] Refer to the attached Figure 1 , Figure 2 and Figure 3 In order to conveniently turn over the paper veneer, in this embodiment, two electric suction cups 2 are arranged outside the printing unloading conveyor belt 1 to alternately grab the paper veneer on the printing unloading conveyor belt 1. Each electric suction cup 2 may include three vacuum suction cup heads 201 and a ring-shaped support 202 located at the root of the vacuum suction cup head 201. Relying on the support of the ring-shaped support 202, the electric suction cup 2 can be stably suspended in the air. When the vacuum suction cup head 201 of the electric suction cup 2 is attached to the paper veneer, the electric vacuum pump is started to quickly extract air to form a vacuum to suck the paper veneer. The vacuum degree is monitored in real time through the vacuum switch / sensor to ensure the adsorption stability. If air leakage is detected (such as the paper veneer falling off), an alarm can be triggered or the vacuum can be re-drawn; Then, the electric suction cup 2 is rotated to fall into the gap between two adjacent feeding conveyor belts 3, the pressure relief valve is energized, external air is introduced, the negative pressure disappears, and the paper veneer falls down to be received by the feeding conveyor belt 3.

[0026] Refer to the attached Figure 3 , Figure 4 and Figure 18 In order to conveniently rotate the paper board, the present embodiment vertically arranges a vertical cylinder 18, a bearing seat 19, a brake motor 20, and a support arm 21 connected to the output end of the brake motor 20 in sequence between the printing unloading conveyor belt 1 and the feeding conveyor belt 3, see Figure 18 , start the vertical cylinder 18 through the central controller, lift the bearing seat 19 and the support arm 21, so that the electric suction cup 2 is higher than the paper board, until the in-place sensor of the printing unloading conveyor belt 1 detects the in-place signal of the paper board, controls the printing unloading conveyor belt 1 and the feeding conveyor belt 3 to stop temporarily, and then lowers the bearing seat 19. Since the outer side of the support arm 21 is connected to the electric suction cup 2 at a position far away from the brake motor 20, the vacuum suction cup head 201 of the electric suction cup 2 is attached to the paper board and sucked, and then the brake motor 20 is started, and the transmission is carried out through the gearbox to rotate the support arm 21 half a circle forward until the paper board is suspended at a position at least 1 cm higher than the feeding conveyor belt 3. At this time, the electric suction cup 2 releases pressure, puts down the paper board, and completes the turning. Finally, the support arm 21 is reversed for half a circle to reset, so that the two support arms 21 alternately transfer the paper boards and put them on the feeding conveyor belts 3 on both sides.

[0027] Among them, the brake motor 20 adopts closed-loop control technology, based on the actual angle feedback from sensors such as encoders (for example, angle encoders), adjusts the input signal through PID or fuzzy control algorithms to ensure accuracy, and sets reference points to facilitate the distinction between forward and reverse rotation.

[0028] Since the paper veneer directly flows between the automatic carton printing, slotting, die-cutting machine and the bonding production line, the ink on its surface may not be fully dried. Friction can cause bumps, indentations or corners missing in the ink pattern, or even ink dripping.

[0029] Refer to the appendix Figure 1 and Figure 17 To dry the ink, in this embodiment, a fan 27 is arranged between the printing and discharging conveyor belt 1 and the feeding conveyor belt 3. The fan 27 is suspended from the ceiling by a suspended frame 26 at the top. Refer to Figure 18 It is started by the central processing unit, agitating the air flow and flowing towards the support arm 21 at a relatively low wind speed to take away the excess moisture of the paper veneer, quickly and conveniently drying the ink on the paper veneer, and also blowing off the dust and residual paper strips on the surface of the paper veneer without manual cleaning.

[0030] Refer to the appendix Figure 6 and Figure 7 To prevent the ink from sticking, in this embodiment, a blowing nozzle 4 is also arranged inside the feeding conveyor belt 3. The rotatable blowing nozzle 4 can change its orientation to blow air vertically or horizontally. Since an elastic member 5, a movable core 6, and a push rod 7 are sequentially arranged along the axial direction inside the blowing nozzle 4, after the blowing nozzle 4 is ventilated, the movable core 6 is pushed by the air flow, stretching the elastic member 5 made of rubber (or spring material), and the air flows out through the gap between the movable core 6 and the blowing nozzle 4. The movable core 6 is in the shape of a round rod with one end thick, and there is a gap between it and the blowing nozzle 4 in the static state, which is convenient for the air flow to push. When the blowing nozzle 4 blows air vertically, refer to Figure 8 , Figure 9 and Figure 10 the blowing nozzle 4 is in a static state, and the air flow passes through the intervals between the belts of the feeding conveyor belt 3, suspending the paper veneer by the air flow to reduce the friction between the paper veneer and the feeding conveyor belt 3, minimizing the bumps, indentations or corners missing in the ink pattern as much as possible, maintaining the safety of the ink pattern during the transmission process, and taking away the excess moisture of the paper veneer to accelerate the drying of the plastic. At this time, the gap between the movable core 6 and the blowing nozzle 4 is relatively small. At the same time, after the electric suction cup 2 stops briefly, it descends slightly, lower than the belt of the feeding conveyor belt 3, to prevent contacting the paper veneer. The air flow of the blowing nozzle 4 gradually decreases to drop the paper veneer onto the feeding conveyor belt 3, then rotate the blowing nozzle 4 forward, facing the electric suction cup 2, and start the feeding conveyor belt 3 to move the paper veneer away. When the blowing nozzle 4 blows air horizontally, increase the input air pressure. Refer to Figure 11 and Figure 12, the blowing nozzle 4 is in an open state, the gap between the movable core 6 and the blowing nozzle 4 increases, and the opening of the blowing nozzle 4 is opened through the movable core 6 and the push rod 7, enabling wide-angle air outlet, so that the air flow blows the electric suction cup 2, sweeping away impurities such as floating dust on the surface, facilitating the maintenance of the surface cleanliness of the electric suction cup 2, so as to reliably grasp the subsequent paper veneer. After a certain period of time, the paper veneer is vertically staggered from the electric suction cup 2, and the blowing nozzle 4 and the electric suction cup 2 are reversed to reset them.

[0031] Refer to the appendix Figure 8 , Figure 13 and Figure 14 , in this embodiment, a slot 8, a hanging piece 901, and an indicating piece 9 are sequentially arranged along the radial direction on the outer side of the blowing nozzle 4. Since the rubber slot 8 is bonded to the outer side of the blowing nozzle 4, it can bite the alloy hanging piece 901 to hang the indicating piece 9. Among them, the indicating piece 9 can be selected from either a cotton strip or a white paper towel, which is pre-bonded to the indicating piece 9 and can displace with the deformation of the blowing nozzle 4; When the indicating piece 9 contacts the ink, its color changes, which is used to indicate the abnormal state of the paper veneer, prompting the staff that the ink on the paper veneer needs to be dried. Here, the speed of the printing and blanking conveyor belt 1 or the brake motor 20 can be reduced, or it can stay at the fan 27 for a certain period of time to increase the drying time, and then the indicating piece 9 can be removed by pulling out the hanging piece 901, and a clean indicating piece 9 can be replaced.

[0032] Refer to the appendix Figure 9 , Figure 11 and Figure 12 , during the opening process of the blowing nozzle 4, a stepped groove 22 and a traction rod 23 are arranged at intervals inside the blowing nozzle 4. The middle of the traction rod 23 is connected to the bottom of the elastic member 5, which can firmly hold the elastic member 5 and prevent the movable core 6 from detaching from the blowing nozzle 4. The stepped groove 22 is used to leave a gap between the blowing nozzle 4 and the movable core 6 for air outlet. In addition, a rubber sleeve 24 is bonded between the top of the elastic member 5 and the bottom of the movable core 6. The rubber sleeve 24 is centered, which can keep the blowing nozzle 4, the elastic member 5, and the movable core 6 coaxial, and thicken and strengthen the end of the elastic member 5 to prevent breakage. Moreover, a rubber gasket 25 is bonded between the top of the movable core 6 and the bottom of the push rod 7. When the movable core 6 moves, the push rod 7 swings relative to the rubber gasket 25 to prevent breakage. When the blowing ends, under the action of the elastic rebound of the elastic member 5, the movable core 6 is pulled back into the blowing nozzle 4, and the push rod 7 drives the blowing nozzle 4 back to the stationary state.

[0033] Refer to the appendix Figure 5 , Figure 16 and Figure 18, when the paper veneer is suspended, it needs to be straightened. For this purpose, in this embodiment, a horizontal cylinder 10, a straightening plate 11 connected to the rod of the horizontal cylinder 10, a porous layer 12, and an oil film 13 are sequentially arranged horizontally. When the electric suction cup 2 disengages, the central controller starts the horizontal cylinder 10 to extend, pushing two adjacent straightening plates 11 closer to the paper veneer, driving the oil film 13 to contact the paper veneer until the two porous layers 12 clamp the paper veneer to make the paper veneer centered. The porous layer 12 is made of a porous honeycomb plate and cut, which can ventilate and will not hinder the blowing and drying of the paper veneer. Moreover, the oil film 13 is used to reduce the surface friction of the porous layer 12 to avoid scratching the paper veneer.

[0034] Then, the rod of the horizontal cylinder 10 retracts, causing the straightening plate 11, the porous layer 12, and the oil film 13 to disengage from the paper veneer. Along with the decrease in air flow, the paper veneer vertically falls onto the feeding conveyor belt 3. It is also possible to keep the straightening plate 11 slightly close to the paper veneer. After a short period of time, the paper veneer stops, and then the rod of the horizontal cylinder 10 is controlled to fully retract.

[0035] Among them, the working principles of the horizontal cylinder 10 and the vertical cylinder 18 are both to convert the air pressure energy into mechanical energy through compressed air or other gases, driving the piston to make a linear reciprocating motion in the cylinder body. There are reversing valves and pressurizing air pumps. When the pressurizing air pump intakes air, the forward air path of the reversing valve is opened. On the contrary, the reverse air path of the reversing valve is opened to relieve pressure on the horizontal cylinder 10 and the vertical cylinder 18, causing the piston and the piston rod to retract. And through the stroke sensor, the position of the straightening plate 11 is monitored in real time to push the paper veneer at a fixed point, facilitating the orderly control of starting and stopping.

[0036] Refer to the appendix Figure 16 and Figure 18 , in this embodiment, an installation frame 14 and a baking lamp 15 are sequentially arranged vertically on the top of the straightening plate 11. The baking lamp 15 is used to continuously irradiate the paper veneer to accelerate the drying of the ink. When the straightening plate 11 pushes the paper veneer to be centered, the baking lamp 15 can be selected to be turned off to avoid scorching the paper veneer. In addition, the baking lamp 15 avoids the electric suction cup 2 and the blowing nozzle 4, enabling simultaneous blowing drying and light drying; Furthermore, the installation frame 14 is fixed to the top of the straightening plate 11 by screws. Two symmetrical clamping sleeves 16 are welded to the top of the installation frame 14 for clamping the tail of the baking lamp 15. Then, by turning the handle bolt 17 forward, the two clamping sleeves 16 are tightened to lock the baking lamp 15 by friction. On the contrary, by turning the handle bolt 17 in reverse, the baking lamp 15 can be loosened to release the locking function, facilitating replacement or maintenance.

[0037] Refer to the appendix Figure 5 , Figure 7 and Figure 18When the blowing nozzle 4 needs to rotate, in this embodiment, a suspension rod 402 and a rotating motor 403 for rotating the suspension rod 402 are installed inside the material conveying belt 3. Since a connecting pipe 401 communicating with the adjacent blowing nozzle 4 is fixed to the outside of the suspension rod 402 by a clamp, the rotating motor 403 can be started by the central controller, and the gear set is used for transmission to slowly rotate the suspension rod 402, so that the suspension rod 402 rotates forward or backward inside the material conveying belt 3 with the bearing, and the rotation can be automatically completed. Moreover, the rotating motor 403 can also control the rotation angle through an angle encoder, thereby realizing the accurate positioning of the blowing nozzle 4, which is reflected in vertical air outlet or horizontal air outlet.

[0038] Among them, referring to Figure 5 、 Figure 6 and Figure 7 , the air inlet of the connecting pipe 401 is sequentially communicated with the electric air valve 39, the pressure stabilizing tank 38, and the air pump 40. Referring to Figure 18 , the central controller opens the electric air valve 39, starts the air pump 40 to compress air, and pumps it into the pressure stabilizing tank 38, so that the pressure stabilizing tank 38 provides a gas source with a certain pressure for the blowing nozzle 4.

[0039] Referring to the attached Figure 1 、 Figure 15 and Figure 18 , in this embodiment, a servo motor 31, a loading table 29, and a lead screw 32 passing through the loading table 29 are sequentially arranged vertically in the waiting area. Since the loading table 29 is intermittently penetrated by a vertical guide rail 28 and an internal thread tube 30 threadedly engaged with the lead screw 32, when the central controller starts the servo motor 31, the lead screw 32 is intermittently rotated forward by a certain number of turns by relying on the internal thread tube 30, and the loading table 29 can be lowered by a certain height, for example, not less than the thickness of a single paper board. It can be lowered at intervals when the material conveying belt 3 stops, leaving enough space for storing the paper boards flowing down from the material conveying belt 3.

[0040] Referring to the attached Figure 15 , a guardrail 33 parallel to the material conveying belt 3 is welded to the top of the loading table 29. When the paper boards are separated from the material conveying belt 3 in the reverse direction, the guardrail 33 blocks the paper boards for stacking, making these paper boards stacked neatly. In addition, a fence 34 avoiding the guardrail 33 is installed at the top of the vertical guide rail 28 through a nut, which can laterally limit the paper boards to prevent them from falling. So when the production rhythm is relatively fast, the paper boards can be temporarily stored, facilitating the coordination of the production rhythm between the automatic carton printing slotting and die-cutting machine and the bonding production line, reducing material jams and blockages. After these paper boards are stacked to a certain height, they are unloaded manually, and then the servo motor 31 is controlled to reverse the lead screw 32 by a certain number of turns to lift the loading table 29 until it is reset.

[0041] As an optional embodiment, when the central controller communicates with the electrical appliances in this solution, either RS485 or CAN bus can be used to transmit control signals, which is convenient for staff to operate when they are on duty at the transmission station.

[0042] The working principle of the present invention is as follows: during operation, the printed paper board falls onto the printing unloading conveyor belt 1, and the image of the paper board is captured in real time by the visual detector 36 in the middle of the gantry 35, transmitted to the central controller, and compared with the preset image in the memory, and abnormal parts are screened out, and the defective parts are made to fall onto the defective part tray 37, while the qualified paper boards are stopped.

[0043] The vertical cylinder 18 is started by the central controller to lift the bearing seat 19 and the support arm 21, so that the electric suction cup 2 is higher than the paper board, until the in-place sensor of the printing unloading conveyor belt 1 detects the in-place signal of the paper board, and the printing unloading conveyor belt 1 and the feed conveyor belt 3 are controlled to stop briefly, and then the bearing seat 19 is lowered to make the vacuum suction cup head 201 of the electric suction cup 2 stick to the paper board and suck it, and then the brake motor 20 is started, and the support arm 21 is rotated half a circle forward until the paper board is suspended at a position at least 1 cm higher than the feed conveyor belt 3.

[0044] When the blowing nozzle 4 blows air vertically, the blowing nozzle 4 is in a stationary state, and the airflow passes through the gaps between the feed conveyor belt 3, and the airflow supports the paper veneer to be suspended in the air, so as to reduce the friction between the paper veneer and the feed conveyor belt 3, and minimize the bumps, indentations or corners of the ink pattern, thereby maintaining the safety of the ink pattern during transmission, taking away excess moisture from the paper veneer, and accelerating the drying of the plastic. At this time, the electric suction cup 2 releases pressure, puts down the paper veneer, and completes the flipping.

[0045] At the same time, the electric suction cup 2 stops briefly and then drops slightly, lower than the belt of the feed conveyor 3 to prevent it from contacting the paper board. The airflow of the blowing nozzle 4 gradually decreases to drop the paper board to the feed conveyor 3, and then the blowing nozzle 4 rotates forward toward the electric suction cup 2, and the feed conveyor 3 is started to remove the paper board.

[0046] When the blowing nozzle 4 discharges air horizontally, the input air pressure is increased, and the opening of the blowing nozzle 4 is opened through the movable core 6 and the push rod 7, so that the air can discharge air at a wide angle, so that the airflow sweeps the electric suction cup 2, sweeps off the dust and other impurities on the surface, and keeps the surface of the electric suction cup 2 clean, so as to reliably grab the subsequent paper veneer. After a certain period of time, the paper veneer is vertically offset from the electric suction cup 2, and the blowing nozzle 4 and the electric suction cup 2 are reversed to reset them.

[0047] When the indicator piece 9 contacts the ink, its color changes to indicate the abnormal state of the paper veneer, prompting the staff that the paper veneer ink needs to be dried. The rotation speed of the printing and blanking conveyor belt 1 or the braking motor 20 is reduced, or it stays at the fan 27 for a certain period of time to increase the drying time. Then, the indicator piece 9 is removed by pulling out the hanging piece 901, and a clean indicator piece 9 is replaced.

[0048] When the material conveying conveyor belt 3 rotates forward, the paper veneer is sent to the post-treatment area and then into the bonding production line. When the production rhythm is relatively fast, the material conveying conveyor belt 3 rotates in reverse to send the paper veneer to the waiting area for temporary storage, which facilitates coordinating the production rhythm between the automatic carton printing, slotting, and die-cutting machine and the bonding production line, reducing material jams and blockages. After these paper veneers are stacked to a certain height, they are manually unloaded. Then, the servo motor 31 is controlled to reverse the lead screw 32 by a certain number of turns to lift the material loading platform 29 until it is reset.

[0049] The above are only the optional implementation manners of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A packaging printing and conveying device, comprising a printing unloading conveyor belt (1), characterized in that: The printing material unloading conveyor belt (1) is externally provided with: An electric suction cup (2) for grabbing the paper sheet on the printing unloading conveyor belt (1); A feeding conveyor belt (3) is used to receive the paper veneer dropped by the electric suction cup (2), a waiting area and a back-end area are respectively arranged at both ends of the feeding conveyor belt (3), and a straightening mechanism is arranged outside the feeding conveyor belt (3); A blowing nozzle (4), the blowing nozzle (4) being arranged inside the feeding conveyor belt (3), and an elastic member (5), a movable core (6), and a push rod (7) being arranged in sequence along the axial direction inside the blowing nozzle (4); When the blowing nozzle (4) discharges air vertically, the paper veneer is suspended in the air by the airflow, thereby reducing the friction between the paper veneer and the feeding conveyor belt (3); When the blowing nozzle (4) discharges air horizontally, the opening of the blowing nozzle (4) is opened by the movable core (6) and the push rod (7), so that the airflow sweeps the electric suction cup (2).

2. A packaging printing and transmission device according to claim 1, characterized in that: The outer side of the blowing nozzle (4) is provided with a slot (8), a hanging piece (901), and an indicator piece (9) in sequence along the radial direction; When the indicator sheet (9) contacts ink, its color changes, which is used to indicate an abnormal state of the paper board. The indicator sheet (9) can then be removed by pulling out the hanging sheet (901).

3. A packaging printing and transmission device according to claim 1, characterized in that: The straightening mechanism comprises a horizontal cylinder (10) arranged in sequence laterally, a collimating plate (11) connected to the cylinder rod of the horizontal cylinder (10), a porous layer (12), and an oily film (13); When the paper board is suspended in the air, the horizontal cylinder (10) pushes the alignment plate (11), driving the oily film (13) to contact the paper board, so that the paper board is centered.

4. A packaging printing and transmission device according to claim 3, characterized in that: A mounting frame (14) and a heating lamp (15) are vertically arranged in sequence on the top of the collimating plate (11), and the heating lamp (15) is away from the electric suction cup (2) and the blowing nozzle (4).

5. A packaging printing and transmission device according to claim 1, characterized in that: It also includes a vertical cylinder (18), a bearing seat (19), a brake motor (20), and a support arm (21) connected to the output end of the brake motor (20), wherein the outer side of the support arm (21) is connected to the electric suction cup (2) at a position away from the brake motor (20).

6. A packaging printing and transmission device according to claim 1, characterized in that: A suspension rod (402) and a rotating motor (403) for rotating the suspension rod (402) are installed inside the feed conveyor belt (3), and a connecting pipe (401) connected to the adjacent blowing nozzle (4) is fixed on the outside of the suspension rod (402).

7. A packaging printing and transmission device according to claim 1, characterized in that: The blowing nozzle (4) is internally provided with a step groove (22) and a traction rod (23), the middle of the traction rod (23) is connected to the bottom of the elastic member (5), a rubber sleeve (24) is bonded between the top of the elastic member (5) and the bottom of the movable core (6), and a rubber pad (25) is bonded between the top of the movable core (6) and the bottom of the push rod (7).

8. A packaging printing and transmission device according to claim 1, characterized in that: A fan (27) is provided between the printing unloading conveyor belt (1) and the feeding conveyor belt (3), and a suspension frame (26) is installed on the top of the fan (27); When the fan (27) is started, airflow is actuated to dry the ink on the paper sheet.

9. A packaging printing and transmission device according to claim 1, characterized in that: The material waiting area is vertically provided with a servo motor (31), a material loading platform (29), and a screw rod (32) passing through the material loading platform (29). The material loading platform (29) is penetrated by vertical guide rails (28) and an internal threaded tube (30) threadably matched with the screw rod (32).

10. A packaging printing and transmission device according to claim 9, characterized in that: A guardrail (33) parallel to the feeding conveyor belt (3) is fixed on the top of the loading platform (29), and a fence (34) avoiding the guardrail (33) is fixed on the top of the vertical guide rail (28); When the paper veneer leaves the feeding conveyor belt (3) in the reverse direction, the guardrail (33) blocks the paper veneer for stacking.

Images