Paperboard printing apparatus and printing process

Abstract

The present application relates to paperboard printing technical field, the present application effectively solves;The technical scheme solved includes: paperboard printing equipment, including conveying paperboard transmission mechanism and inkjet printing paperboard work cavity;Transmission mechanism, transmission mechanism is equipped with multiple clamping position of bearing paperboard;Work cavity, work cavity includes two groups of inkjet printing mechanism, ink liquid conveying assembly, drying piece, blowing assembly, lifting clamping assembly and control panel;Two groups of inkjet printing mechanism, two groups of inkjet printing mechanism are in the clamping position and accept both sides of paperboard inkjet printing. Through the structural design of blowing assembly, the blowing in the work cavity can reduce the temperature in the cavity, and the blowing cooling can also be carried out on both sides of the paperboard after printing. With the movement of the paperboard driven by the transmission mechanism, both sides of the paperboard can receive blowing cooling, reducing the sticking of ink after drying without cooling.

Description

Technical Field

[0001] This invention relates to the field of paperboard printing technology, and more particularly to paperboard printing equipment and printing processes. Background Technology

[0002] Paperboard printing is a technique and process widely used in the printing industry. It transfers images or text onto other objects by using ink and stencils on specific paper. Paperboard printing is widely used in packaging, book publishing, advertising production, and other fields.

[0003] Chinese Publication No. CN116080283A discloses a paperboard printing equipment and method, applicable to the packaging box production field. The paperboard printing equipment includes a transfer conveyor and a drying device. The transfer conveyor includes a transfer conveyor belt and multiple partitions disposed thereon, with each partition equally spaced and adjacent partitions forming a cavity with the conveyor belt to accommodate the paperboard. The drying device includes an oven and a drying conveyor belt passing through the oven, with multiple inclined paperboard support assemblies on the drying conveyor belt. After exiting the transfer conveyor belt, the paperboard slides between two adjacent paperboard support assemblies, with the un-inked side of the paperboard contacting one of the two support assemblies, while the ink-coated side does not contact the other. This application features high drying efficiency.

[0004] The comparative document uses a larger drying structure, which generates relatively more heat. Therefore, the ink will solidify and not flow after drying. However, in the case of some special inks, if they are collected without cooling after high-temperature drying, they will become sticky.

[0005] In light of the above, we provide cardboard printing equipment and printing processes to solve the aforementioned problems. Summary of the Invention

[0006] In view of the above situation, the present invention provides paperboard printing equipment and printing process, the apparatus.

[0007] Paperboard printing equipment

[0008] Includes a conveyor mechanism for transporting paperboard and a working chamber for inkjet printing paperboard;

[0009] The conveying mechanism is equipped with multiple slots for carrying cardboard.

[0010] The working chamber includes two symmetrically arranged inkjet printing mechanisms, an ink delivery assembly, a drying component, a blowing assembly, a lifting gripper assembly, and a control panel.

[0011] Two sets of inkjet printing mechanisms are used to print ink on both sides of the cardboard receiving plate inside the card slot.

[0012] Ink delivery assembly, which supplies ink to the inkjet printing mechanism;

[0013] A drying unit is installed on the inkjet printing mechanism to dry the ink at the printing position of the paperboard.

[0014] The blower assembly is located at the top of the working chamber, and air outlets are provided on both sides of the blower assembly facing downwards.

[0015] The lifting gripper assembly is located on the inner top wall of the working cavity and on the upper side of the connection center of the two inkjet printing mechanisms.

[0016] The control panel controls the movement of the two sets of inkjet printing mechanisms and the blowing assembly; while the ink printing assembly is in motion, the control panel drives the ink delivery assembly and the drying unit to perform printing and drying.

[0017] The inkjet printing mechanism is equipped with a photoelectric sensor. The photoelectric sensor senses the paperboard and transmits the signal to the control panel. The control panel drives the lifting gripper assembly to clamp the paperboard.

[0018] The above technical solution enables the same or different printing operations to be performed on both sides of the cardboard, and allows for processes such as drying the printing area and blowing air for heat dissipation during printing.

[0019] Preferably, the card slot is composed of two long plates of the same size, with a gap between two adjacent card slots, and the combined diameter of the two adjacent gaps is larger than the connecting diameter of the two sets of inkjet printing mechanisms.

[0020] The above technical solution allows for the movement of two sets of printing components with sufficient space between two adjacent card slots.

[0021] Preferably, the inkjet printing mechanism includes a first slide rail, a second slide rail, and an inkjet head;

[0022] The top of the first slide rail is fixedly connected to the top wall of the working cavity, the second slide rail is mounted on the first slide rail, and the inkjet head is mounted on the second slide rail.

[0023] The above technical solution enables the inkjet printing position to move up and down as well as left and right, thereby allowing for a wider range of printed patterns.

[0024] Preferably, the control panel drives the first slide rail and the second slide rail to move and reset.

[0025] The above technical solution allows for the movement of two sets of slide rails via the control panel, which in turn moves the inkjet print head to achieve a complete printing effect.

[0026] Preferably, the drying component includes a gripper and a heating element;

[0027] The grippers are in two sets, symmetrically arranged on the inkjet head; the heating element is attached to the grippers, with the same orientation as the inkjet head.

[0028] The control panel is equipped with a telescopic scroll, and a power cord is installed inside the telescopic scroll; one end of the power cord is connected to the heating element, and the other end is connected to the control panel.

[0029] The above technical solution allows for control of the drying unit via a control panel and a power cord connection, which makes the drying unit operate more stably. Furthermore, to facilitate the movement of the drying unit, the power cord is routed along the various pipes of the ink delivery assembly, and its length is controlled by a telescopic reel, preventing the equipment from becoming tangled.

[0030] Preferably, the ink delivery assembly includes a bent end, a first folded tube, a connecting tube, and a second folded tube;

[0031] A control valve is provided on the bent end, and the control panel drives the control valve to deliver ink into the inkjet head;

[0032] One end of the bent end is connected to the inkjet head, and the other end is connected to the first folded tube; one end of the connecting tube is connected to the first folded tube, and the other end is connected to the second folded tube.

[0033] The top of the first slide rail is provided with a support frame, and a support box for receiving ink is inserted into the inside of the support frame. The support box is provided with an interface, and a sealing cap is threaded onto the interface.

[0034] The above technical solution establishes a complete ink delivery structure to transport ink to the inkjet printer head, and the structure can extend and retract according to the operation of the inkjet head.

[0035] Preferably, the bottom of the support frame has two strip grooves, and the support box has two discharge ports corresponding to the two strip grooves;

[0036] The end of the second folded tube furthest from the connecting tube is connected to the discharge port.

[0037] The above technical solution allows for convenient control of the placement of the carrier box, ensuring that the ink flows out from the bottom without affecting the receiving frame.

[0038] Preferably, the blower assembly includes an outer frame housing and a plurality of fans, the plurality of fans being disposed on the outer frame housing; a flow-dividing cavity is provided inside the outer frame housing, and the airflow outlet end of the flow-dividing cavity corresponds to the air outlet.

[0039] The above technical solution diverts the wind, causing it to blow to both sides, creating inward and outward airflow.

[0040] Preferably, the lifting gripper assembly includes a lead screw lifting mechanism, a telescopic component, a support plate, and a pneumatic gripper; the pneumatic gripper is located at the bottom of the support plate;

[0041] The screw lifting mechanism has square plates on both sides, and the telescopic component is connected to the square plate on one side and to the support plate on the other side.

[0042] The lead screw lifting mechanism is connected to the middle of the support plate, allowing the support plate to move up and down via the lead screw lifting mechanism.

[0043] The above technical solution allows for vertical movement to clamp the cardboard, resulting in greater stability during inkjet printing.

[0044] The printing process is characterized by the following steps:

[0045] S1. Based on the pattern to be printed, adjust the movement trajectory of the inkjet head on the first and second slide rails through the control panel, and determine the position of the inkjet point according to the coincidence point of the movement trajectory point and the printing point.

[0046] S2. Based on the position of the inkjet dots, use the control panel to control the switch of the control valve to make the inkjet head work at the corresponding inkjet dots;

[0047] S3. Calculate the inkjet duration of a piece of cardboard, set the movement and interval pause time of the transmission mechanism, and during the interval pause, make the clamping stop directly below the lifting gripper assembly.

[0048] S4. After setting the parameters, turn on the blower assembly, then insert the cardboard to be printed into the slot. With the movement of the transmission mechanism, the cardboard will move forward to the lower side of the lifting gripper assembly. The lifting gripper assembly will then move downward to clamp the upper side of the cardboard.

[0049] S5. The inkjet head is then controlled to move on the first and second slide rails and to deliver ink through the ink delivery assembly 22. During inkjet printing, the ink is dried at the printing position by the drying component. After the printing positions on both sides have completed their work, the print head is reset. During the reset, the receiver of the photoelectric sensor receives the signal again and transmits it to the control panel. The control panel controls the lifting gripper assembly to reset. After that, the transmission mechanism moves again and the heat of the printing position is cooled by the blowing assembly.

[0050] The beneficial effects of the above technical solution are as follows:

[0051] (1) By using the positioning and the coordinated setting of two sets of inkjet printing mechanisms, the conveying mechanism can transport the paperboard in a vertical position. After the paperboard is transported into the working cavity, it is positioned in the middle of the two sets of inkjet printing mechanisms. The control panel controls the inkjet printing mechanisms on both sides of the paperboard to perform the same or different inkjet movements, thereby achieving the effect of printing on both sides of the paperboard simultaneously.

[0052] (2) By cooperating with the lifting gripper assembly and the heating element, an auxiliary effect is achieved when the paperboard is inkjet printed. The lifting gripper assembly is located on the upper side of the paperboard to clamp it. During inkjet printing, the paperboard is more vertically positioned on the conveying mechanism, resulting in a better printing effect. The heating element dries the printing ink during the printing process. It has a small structure and occupies little area. When the ink is dried at the printing position, the heat generated by the equipment as a whole is also reduced.

[0053] (3) Through the structural design of the blowing assembly, the temperature inside the working chamber can be reduced by blowing air, and the two sides of the printed paperboard can also be cooled by blowing air. As the paperboard moves with the conveying mechanism, both sides of the paperboard can be cooled by blowing air, reducing the ink sticking after drying if it is not cooled. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0055] Figure 2 This is a schematic diagram of the inkjet printing mechanism of the present invention;

[0056] Figure 3 This is a schematic diagram of the ink delivery structure component of the present invention;

[0057] Figure 4 This is a schematic diagram of the carrier box structure of the present invention;

[0058] Figure 5 This is a schematic diagram of the drying component structure of the present invention;

[0059] Figure 6 This is a schematic diagram of the blower assembly structure of the present invention;

[0060] Figure 7 This is a schematic diagram of the flow divider cavity structure of the present invention;

[0061] Figure 8 This is a schematic diagram of the lifting gripper assembly structure of the present invention.

[0062] In the diagram: 1. Transmission mechanism; 2. Working chamber; 21. Inkjet printing mechanism; 211. First slide rail; 212. Second slide rail; 213. Inkjet print head; 22. Ink delivery assembly; 221. Bend end; 222. First folded tube; 223. Connecting tube; 224. Second folded tube; 23. Drying component; 231. Gripper; 232. Heating element; 24. Blowing assembly; 241. Air outlet; 242. Housing; 243. 25. Fan; 25. Lifting gripper assembly; 251. Screw lifting mechanism; 252. Telescopic component; 253. Support plate; 254. Pneumatic gripper; 26. Control panel; 3. Locking position; 31. Gap; 4. Photoelectric sensor; 5. Telescopic reel; 51. Power cord; 6. Square plate; 7. Bearing frame; 8. Bearing box; 9. Strip groove; 10. Discharge port; 11. Diverting chamber; 12. Interface; 13. Sealing cover; 14. Control valve. Detailed Implementation

[0063] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific embodiments.

[0064] In the description of this invention, it should be understood that the terms "lateral", "longitudinal", "end", "edge", "sidewall", "upper", "lower", "upper part", "lower part", "directly above", "surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0065] This application proposes a paperboard printing apparatus, specifically:

[0066] Please refer to Figure 1 The printing equipment consists of a transmission mechanism 1 and a working cavity 2 disposed on the transmission mechanism 1;

[0067] The conveying mechanism 1 is used to convey the paperboard to be printed. The conveying mechanism 1 is provided with multiple slots 3. There is an opening on one side of the conveying mechanism 1, which is used for the insertion position of the paperboard to be printed. In actual use, the paperboard can be conveyed by manual insertion and mechanical insertion.

[0068] The multiple card slots 3 are equidistantly arranged on the conveyor belt of the conveyor mechanism 1, and there is a gap 31 between two adjacent card slots 3 that is larger than the connecting diameter of two sets of inkjet printing mechanisms 21. This gap 31 reduces the confinement of the cardboard when it moves and prints; each card slot 3 is composed of two long plates of the same size.

[0069] In one embodiment, the card slot 3 is fixedly mounted on the transmission mechanism 1 and moves with the transmission belt to insert a cardboard of a fixed size, which can be used as a printing production line device for printing fixed-size cardboard.

[0070] In another embodiment, the locking position 3 is a detachable structure located on the conveyor belt of the transmission mechanism 1. In this case, the locking position 3 can be fixed by connecting the positions of the two long plates through the mounting base, and the appropriate long plate can be selected and fixed according to the height and thickness of different cardboards to complete the fixing of the cardboard.

[0071] In the embodiment with two card slots 3, the height of the adopted long plate can be inserted to one-third of the cardboard, and the spacing formed by the two long plates can be adapted to clamp the cardboard, so that the cardboard is less likely to bend during transportation.

[0072] The working cavity 2 is located on the transmission mechanism 1, and the printing effect is completed inside. The internal height of the working cavity 2 is higher than the height of the cardboard, and the two sides of the inner wall are fixed on the two sides of the solid fixing device of the transmission mechanism 1.

[0073] The working chamber 2 is equipped with multiple structures, including two symmetrically arranged inkjet printing mechanisms 21, ink delivery assembly 22, drying component 23, blowing assembly 24, lifting gripper assembly 25, and control panel 26.

[0074] Please refer to Figure 2 Two sets of inkjet printing mechanisms 21 are used to control the printing pattern and simultaneously perform inkjet printing on both sides of the cardboard receiving plate in the card slot 3.

[0075] The inkjet printing mechanism 21 is composed of two first slide rails 211, one second slide rail 212 and one inkjet head 213 connected together.

[0076] Two first slide rails 211 are symmetrically arranged on the upper sides of the transmission mechanism 1. The top of the first slide rails 211 is fixedly connected to the inner top wall of the working cavity 2. The two first slide rails 211 are arranged longitudinally. The two ends of the second slide rail 212 are sleeved on the two first slide rails 211 and move laterally in the middle of the two first slide rails 211.

[0077] The inkjet head 213 is existing technology and is a common inkjet component in existing inkjet printing structures, used to achieve inkjet printing effect.

[0078] Before inkjet printing mechanism 21 performs inkjet printing, the paperboard is moved to the middle of the two sets of inkjet printing mechanisms 21 by the operation of the transmission mechanism 1. Subsequently, the inkjet printing mechanisms 21 on both sides perform the same or different movements, and the movement path is the movement steps of the pattern to be drawn. The internal structure of the two sets of inkjet printing mechanisms 21 is controlled according to the pattern to be printed on both sides of the paperboard.

[0079] Under control, the second slide rail 212 first moves up and down the first slide rail 211. After moving down once, the inkjet head 213 moves linearly on the second slide rail 212 and performs inkjet printing. Subsequently, it moves down in sequence to perform the same linear motion. After all the patterns are printed, it stops moving and resets the second slide rail 212 and the inkjet head 213.

[0080] Please refer to Figure 3 The ink delivery assembly 22 is used to deliver ink into the inkjet head 213. The ink delivery assembly 22 is composed of a bent end 221, a first folded tube 222, a connecting tube 223 and a second folded tube 224 connected to form an ink delivery structure.

[0081] Considering the dynamic movement of the inkjet printhead 213, the ink delivery assembly 22 is designed to be able to fold and stretch up, down, left, and right, and to make corresponding adjustments to work in conjunction with the inkjet printhead 213.

[0082] Please refer to Figure 3-4 The top of the second folded tube 224 is connected to the carrier box 8, which is used to hold ink. The ink in the carrier box 8 is transported to the inkjet head 213 through the ink delivery assembly 22.

[0083] The carrier box 8 is supported by the carrier frame 7. A strip groove 9 is provided on the lower side of the carrier frame 7. The strip groove 9 corresponds to the discharge port 10 on the carrier box 8, so that the carrier box 8 is inserted into the carrier frame 7 without obstruction. The carrier box 8 can receive ink and the ink can be supplied to the carrier box 8 at regular intervals according to the calculated printable time. Alternatively, a weighing structure can be set inside the carrier frame 7. When the weight of the carrier box 8 drops to a certain level, an alert is issued to supply ink to the carrier box 8.

[0084] The carrier box 8 is provided with an interface 12 and a sealing cover 13 for pouring ink; at the location where the interface 12 is provided, there is a recessed position, and after the interface 12 is connected to the sealing cover 13, it is flush with the upper side of the recessed position and does not affect the movement of the carrier box 8.

[0085] Meanwhile, a control valve 14 is provided on one side of the bent end 221 to control the ink delivery of ink from the ink delivery assembly 22 to the inkjet head 213, thereby controlling the stopping and starting of the inkjet operation.

[0086] Please refer to Figure 5 In order to achieve faster ink drying during the printing process, drying components 23 are provided on the upper and lower sides of the inkjet head 213 to dry the ink on the printing plate.

[0087] The drying component 23 consists of two structures: a gripper 231 and a heating element 232. The gripper 231 is a common structure for holding objects, essentially the same as a mobile phone clamping structure. There are two grippers 231 on one side of the inkjet head 213, and they are symmetrically arranged. The heating element 232 is clamped onto the inkjet head 213 by the grippers 231. This position of the heating element 232 above and below the inkjet head 213 achieves the effect of drying the printing area.

[0088] The heating element 232 is a heating structure composed of most existing heating wires. By dissipating heat, it can quickly dry the ink at the printing position and effectively prevent the printing pattern from being affected.

[0089] Furthermore, depending on the ink drying state adopted, the gripper 231 can be set to an inclined or basic treatment state;

[0090] In one embodiment, the gripper 231 is designed in a basic vertical shape, so that when printing with fast-drying ink, the drying surface is located on the upper and lower sides of the structure, thus avoiding the problem of ink clumping affecting the printing effect during the fast-drying process.

[0091] In another embodiment, the gripper 231 is set in an inclined position, so that it can be used with inks that have a slower drying speed, so that the ink can be directly irradiated on the printing position during printing to dry the printed pattern without affecting the printed pattern.

[0092] In order to make the movement of the drying component 23 more stable, the drying component 23 is connected by a power cord 51. The power cord 51 is set around the delivery pipe of the ink delivery component 22, and a telescopic roller 5 is set on one side of the power cord 51 to control the length of the power cord 51. The length of the power cord 51 can be changed by cooperating with the movement of the drying component 23. The telescopic roller 5 moves and retracts in coordination, so that the power cord 51 can be connected to the drying component 23 to supply power without restriction.

[0093] Please refer to Figure 6-7 The blowing assembly 24 is used to achieve the effect of blowing air to cool the working cavity 2 and the printing paperboard on both sides. The blowing assembly 24 is located at the top of the working cavity 2, and the blowing assembly 24 has air outlets 241 on both sides facing downwards. The two air outlets 241 produced are one blowing air into the working cavity 2 and the other blowing air into the working cavity 2.

[0094] The blower assembly 24 consists of a housing 242 and multiple fans 243. The fans 243 are located on the upper side of the housing 242 and blow air. The airflow is directed towards the inside of the housing 242. A diversion chamber 11 is provided inside the housing 242 to divert the airflow inside the housing 242, thereby achieving the effect of airflow from two air outlets 241.

[0095] The air outlet 241, which blows air into the working cavity 2, can dissipate heat inside the working cavity 2 and direct the airflow onto the printing paperboard to dissipate heat, thereby effectively reducing the possibility of the printed pattern sticking due to heat when arranging the printed pattern.

[0096] Please refer to Figure 8 The lifting gripper assembly 25 is located on the inner top wall of the working cavity 2 and is located on the upper side of the connection center of the two sets of inkjet printing mechanisms 21.

[0097] Control panel 26 controls and drives the movement of two sets of inkjet printing mechanisms 21 and the blowing assembly 24; while the inkjet printing mechanism 21 is in motion, control panel 26 drives ink delivery assembly 22 and drying component 23 to perform printing and drying.

[0098] The inkjet printing mechanism 21 is equipped with a photoelectric sensor 4. The photoelectric sensor 4 is a through-beam photoelectric sensor 4. When in use, the light emitter and the light receiver are respectively installed on both sides of the path through which the detected object passes. When the detected object passes through, it blocks the light path, and the light receiver will activate and output a control signal.

[0099] In this application, the light emitter and the light receiver are respectively set on two symmetrical inkjet heads 213. When the paperboard is located in the middle of the two inkjet heads 213, the paperboard will block the light path. However, when the two inkjet heads 213 are reset, the light receiver will receive the light path signal again and then transmit the signal to the control panel 26. The control panel 26 drives the lifting gripper assembly 25 to release the gripped paperboard, and the conveying mechanism moves forward again.

[0100] To further explain, the photoelectric sensor 4 is controlled by the control panel 26 so that it stops starting when the inkjet head 213 is not working, and starts working when the inkjet head 213 starts working. Since the two inkjet heads 213 may have different movements, the optical path signal receiving position of the photoelectric sensor 4 is matched with the position on the second slide rail 212 when the inkjet head 213 is reset.

[0101] The two inkjet heads 213 are set to symmetrical base points. The control panel 26 judges the signal received by the photoelectric sensor 4 at the reset setting position of the inkjet head 213. It determines the light path received by the light receiver at that position and then starts to drive the lifting gripper assembly 25 to loosen. When the lifting gripper assembly 25 is reset, the transmission mechanism 1 moves forward, thus starting the second paperboard printing operation.

[0102] As can be seen from the figure, the working chamber 2 is equipped with opening and closing doors on both sides, which facilitates control issues such as internal maintenance.

[0103] The lifting gripper assembly 25 consists of a screw lifting mechanism 251, a telescopic component 252, a support plate 253, and a pneumatic gripper 254.

[0104] The lead screw lifting mechanism 251 is existing technology. By driving the lead screw lifting mechanism 251, the support plate 253 is driven to make vertical linear motion. A square plate 6 is provided at the driving structure position of the lead screw lifting mechanism 251. The square plate 6 is connected to the support plate 253 through the telescopic member 252, so that the support plate 253 can make vertical linear motion more stably; thereby maintaining the stability of the movement of the pneumatic gripper 254.

[0105] The printing process steps are as follows:

[0106] S1. According to the pattern to be printed, adjust the movement trajectory of the inkjet head 213 on the first slide rail 211 and the second slide rail 212 through the control panel 26, and determine the position of the inkjet point to be printed based on the coincidence point of the movement trajectory point and the printing point.

[0107] S2. Based on the position of the inkjet dots, use the control panel 26 to control the switch of the control valve 14 to make the inkjet head 213 work at the corresponding inkjet dots.

[0108] S3. Calculate the inkjet duration of a piece of cardboard, set the movement and interval pause time of the transmission mechanism 1, and during the interval pause, make the clamping position 3 stop directly below the lifting gripper assembly 25.

[0109] S4. After setting the parameters, turn on the blower assembly 24, then insert the cardboard to be printed into the slot 3. With the movement of the transmission mechanism 1, the cardboard moves forward to the lower side of the lifting gripper assembly 25. The lifting gripper assembly 25 moves downward to clamp the upper side of the cardboard. The transmission mechanism 1 needs to be adjusted multiple times before movement so that the slot 3 can move to the middle of the two inkjet printing mechanisms 21 and stop after each movement. After the lifting gripper assembly 25 is reset, control the transmission mechanism 1 to move again, and the movement distance is the same each time.

[0110] S5. The inkjet head 213 moves on the first slide rail 211 and the second slide rail 212, and is supplied with ink through the ink delivery assembly 22. During inkjet printing, the ink is dried at the printing position by the drying component 23. After the printing positions on both sides have completed their work, the print head is reset. During the reset, the receiver of the photoelectric sensor 4 receives the signal again and transmits it to the control panel 26. The control panel 26 controls the lifting gripper assembly 25 to reset. Then the transmission mechanism 1 moves again and the heat of the printing position is cooled by the blowing assembly 24.

[0111] The above description is only for illustrating the present invention and should be understood as not being limited to the above embodiments. Various modifications that conform to the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A paperboard printing equipment, characterized in that, The system includes a conveying mechanism (1) for conveying paperboard and a working chamber (2) for inkjet printing paperboard; the conveying mechanism (1) is provided with multiple cardboard-carrying slots (3); the working chamber (2) includes two sets of inkjet printing mechanisms (21) symmetrically arranged, an ink delivery assembly (22), a drying component (23), a blowing assembly (24), a lifting gripper assembly (25), and a control panel (26); the two sets of inkjet printing mechanisms (21) inkjet print on both sides of the paperboard in the cardboard slots (3); the ink delivery assembly (22) delivers ink to the inkjet printing mechanisms (21); the drying component (23) is located on the inkjet printing mechanism (21) to dry the ink at the printing position of the paperboard; the blowing assembly (24) is located on the paperboard. The top of the working chamber (2) has air outlets (241) on both sides of the blowing assembly (24) facing downwards; the lifting gripper assembly (25) is located on the inner top wall of the working chamber (2) and is located on the upper side of the connection center of the two sets of inkjet printing mechanisms (21); the control panel (26) controls and drives the movement of the two sets of inkjet printing mechanisms (21) and the blowing assembly (24); the inkjet printing mechanism (21) is provided with a photoelectric sensor (4), which senses the paperboard and transmits the signal to the control panel (26), and the control panel (26) drives the lifting gripper assembly (25) to clamp the paperboard; The card slot (3) is composed of two long plates of the same size, and there is a gap (31) between two adjacent card slots (3). The inkjet printing mechanism (21) includes a first slide rail (211), a second slide rail (212), and an inkjet head (213); the top of the first slide rail (211) is fixedly connected to the inner top wall of the working cavity (2), the second slide rail (212) is disposed on the first slide rail (211), and the inkjet head (213) is disposed on the second slide rail (212); The control panel (26) drives the first slide rail (211) and the second slide rail (212) to move and reset; The drying component (23) includes a gripper (231) and a heating element (232); the gripper (231) consists of two sets, symmetrically arranged on the inkjet head (213); the heating element (232) is clamped inside the gripper (231) and faces the same direction as the inkjet head (213); the control panel (26) is provided with a telescopic roller (5), and a power cord (51) is provided inside the telescopic roller (5); one end of the power cord (51) is connected to the heating element (232), and the other end is connected to the control panel (26).

2. The paperboard printing equipment according to claim 1, characterized in that, The ink delivery assembly (22) Includes a bent end (221), a first folded tube (222), a connecting tube (223), and a second folded end. Stacked tube (224); a control valve (14) is provided on the bent end (221), and the control panel (26) drives the control valve (14) to deliver ink into the inkjet head (213); one end of the bent end (221) is connected to the inkjet head (213), and the other end is connected to the first folded tube (222); one end of the connecting tube (223) is connected to the first folded tube (222), and the other end is connected to the second folded tube (224); a support frame (7) is provided on the top of the first slide rail (211), and a support box (8) for receiving ink is inserted into the inside of the support frame (7); an interface (12) is provided on the support box (8), and a sealing cap (13) is threaded onto the interface (12).

3. The paperboard printing equipment according to claim 2, characterized in that, The support frame (7) The bottom has two strip grooves (9), and the carrier box (8) has two corresponding slots (9). The discharge port (10) is connected to the discharge port (10) at the end of the second folded tube (224) away from the connecting tube (223).

4. The paperboard printing equipment according to claim 1, characterized in that, The blower assembly (24) includes an outer frame housing (242) and multiple fans (243), the multiple fans (243) being disposed on the outer frame housing (242); a flow divider cavity (11) is provided inside the outer frame housing (242), and the airflow outlet end of the flow divider cavity (11) corresponds to the air outlet (241).

5. The paperboard printing equipment according to claim 1, characterized in that, The lifting gripper assembly (25) Includes a screw lifting mechanism (251), a telescopic component (252), a support plate (253), and a pneumatic system. Gripper (254); pneumatic gripper (254) is located at the bottom of support plate (253); square plates (6) are provided on both sides of screw lifting mechanism (251), one side of telescopic component (252) is connected to square plate (6), and the other side is connected to support plate (253); screw lifting mechanism (251) is connected to the middle of support plate (253), so that support plate (253) can move up and down by screw lifting mechanism (251).

6. A paperboard printing process, characterized in that: The paperboard printing equipment described in any one of claims 1-5 comprises the following steps: S1. Adjust the position of the inkjet head (213) via the control panel (26) according to the pattern to be printed. The motion trajectory on the first slide rail (211) and the second slide rail (212), based on the motion trajectory points and The overlapping points of the printed dots are used to determine the location of the inkjet dots that need to be sprayed. S2. Based on the position of the inkjet dots, use the control panel (26) to control the switch of the control valve (14). The inkjet head (213) is operated at the corresponding inkjet point; S3. Calculate the inkjet duration of a cardboard piece and set the movement and pause intervals of the transmission mechanism (1). During the interval pause, the locking position (3) is positioned directly below the lifting gripper assembly (25). S4. After setting the parameters, turn on the blower assembly (24), and then insert the cardboard to be printed. Within the clamping position (3), the cardboard moves forward to the lifting gripper assembly (25) as the transmission mechanism (1) moves. On the lower side, the cardboard is clamped on the upper side by the downward movement of the lifting gripper assembly (25); S5, The subsequent control inkjet head (213) is located on the first slide rail (211) and the second slide rail (212). The movement is facilitated by the ink delivery assembly (22), which delivers ink to the inkjet printer via the drying assembly (23). After drying the ink at the printing positions and completing the work on both sides of the printing positions, a reset is performed. During the reset, the photoelectric sensor... The receiver of sensor (4) receives the signal again and transmits it to the control panel (26). The control panel (26) controls the lifting gripper assembly (25) to reset. Then the transmission mechanism (1) moves again and passes through the blower assembly (24) to cool the heat of the printing position.

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