A fully automatic continuous inkjet system for cardboard boxes

Abstract

The present invention discloses a fully automatic continuous coding system for cardboard boxes, comprising a conveyor belt, a material guide belt, a pusher, a guide plate, a flipper, a table body, a position sensor, a coder, a transfer device and an electric control cabinet. The two guide plates are respectively installed at an inlet of the conveyor belt at an angle and are located above the material guide belt. The pusher comprises a support seat, a slide bar and a driver. The table body is installed at the outlet of the conveyor belt and a card box groove is provided on the top surface of the table board. The flipper comprises a flip cylinder, a flip seat, a material pressing assembly and a material pouring assembly. The material pressing rod and the material pouring rod of the material pressing assembly and the material pouring assembly can be driven by a material pressing driving member and a material pouring driving member respectively to move along the conveying direction of the conveyor belt. Several groups of the position sensors are respectively installed on the table board of the table body. The coder is installed on one side of the outlet of the conveyor belt and the nozzle is driven to move by the transfer device, so as to realize automatic steering, flipping and printing of the cardboard box.

Description

[Technical field]

[0001] The invention relates to the technical field of continuous coding, in particular to the technical field of a full-automatic continuous coding system for a cardboard box. [Background technology]

[0002] Cardboard boxes are one of the most widely used packaging products. According to different materials, there are corrugated cardboard boxes and single-layer cardboard boxes, etc., with various specifications and models. At present, workers usually place the folded cardboard boxes directly on the conveyor belt, and then transport them one by one to the coding device for coding. In order to ensure the uniformity of the coding position, this requires workers to place the cardboard boxes on the conveyor belt in the specified direction, which is very troublesome. In addition, the coding device can only code the side of the cardboard box exposed to the outside, but cannot code the side that fits the belt body of the conveyor belt. Therefore, the bottom surface of the folded cardboard box is blank and cannot be printed with the required information, which is relatively wasteful.

[0003] When the printer is working, the ink in it usually flows under the pressure of the circulation pump. Therefore, when the printer needs to be stopped, the ink must be decompressed, otherwise the ink will continue to drip from the nozzle, affecting the quality of the product, and even causing nozzle blockage in severe cases. [Summary of the invention]

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose a fully automatic continuous coding system for cardboard boxes, which can realize automatic turning, flipping and printing of cardboard boxes, so that all sides of the cardboard boxes can be fully utilized.

[0005] To achieve the above-mentioned purpose, the present invention proposes a fully automatic continuous coding system for cardboard boxes, including a conveyor belt, a guide belt, a pusher, a guide plate, a flipper, a table body, a position sensor, a coder, a transfer device and an electric control cabinet. The two guide plates are respectively installed obliquely at the entrance of the conveyor belt and are located above the guide belt. The spacing of the guide belts gradually increases from one end close to the conveyor belt to the end away from the conveyor belt. The pusher includes a support seat, a slide rod and a driver. Several groups of support seats of the pushers are respectively installed on the guide plates, and several slide rods are respectively installed horizontally on the support seats and driven by the driver to move back and forth. The table body is installed at the exit of the conveyor belt and a card box groove is provided on the top surface of the table plate. The flipper includes a flip cylinder, a flip seat, a material pressing assembly and a material pouring assembly. The flip cylinder is located above the outlet of the conveyor belt and the end of the telescopic rod is set downward and connected to a number of flip seats. The material pressing assembly and the material pouring assembly are respectively installed in the bottom surface of the flip seat. The material pressing rod and the material pouring rod of the material pressing assembly and the material pouring assembly can be driven by the material pressing driving member and the material pouring driving member respectively to move along the conveying direction of the conveyor belt. Several groups of position sensors are respectively installed on the table board of the table body. The inkjet printer is installed on one side of the outlet of the conveyor belt and the nozzle is driven to move by the transfer device. The electric control cabinet is respectively electrically connected to the conveyor belt, the guide belt, the pusher, the flipper, the position sensor, the inkjet printer and the transfer device.

[0006] Preferably, the material guide belt includes a material guide frame, a material guide roller, a material guide motor and a transmission belt, and several of the material guide rollers are rotatably connected to the material guide frame. The material guide rollers are horizontally arranged and the top surfaces are flush with the top surface of the belt body of the conveyor belt. The central axis of the material guide rollers is perpendicular to the conveying direction of the conveyor belt. The end of one of the material guide rollers is connected to the output shaft of the material guide motor and is connected to the remaining material guide rollers through a transmission belt.

[0007] Preferably, the sliding rod comprises a rod body and a baffle, the rod body is slidably connected to the support seat, and two baffles are respectively installed outside the rod body and arranged on both sides of the support seat.

[0008] Preferably, a baffle located away from the middle of the material guide belt is installed on a nut, and the nut is threadedly connected to the outside of the rod body.

[0009] Preferably, the driver includes a first driving electromagnet, a second driving electromagnet and a support frame, the first driving electromagnet is fixed at one end of the rod body away from the middle of the material guide belt, the support frame is installed on the side of the support seat away from the middle of the material guide belt, and a plurality of the second driving electromagnets are respectively fixed on the support frame and correspond one by one to the first driving electromagnets.

[0010] Preferably, a pressing chute and a dumping chute are respectively provided on the bottom surface of the flip seat along the conveying direction of the conveyor belt, and the pressing driving component includes a first pressing electromagnet and a second pressing electromagnet, one end of the pressing rod is slidably connected to the pressing chute and the first pressing electromagnet is installed inside, the second pressing electromagnet is installed in the flip seat and located at the end of the pressing chute away from the dumping chute, the dumping driving component includes a first dumping electromagnet and a second dumping electromagnet, one end of the dumping rod is slidably connected to the dumping chute and the first dumping electromagnet is installed inside, the second dumping electromagnet is installed in the flip seat and located at the end of the dumping chute away from the pressing chute.

[0011] Preferably, the flip seat includes a pressing seat body and a pouring seat body, one end of the pressing seat body is provided with a convex column rotatably connected to the pouring seat body and driven to rotate by a flip motor, the top of the pouring seat body is connected to the output shaft end of the flip cylinder, the pressing chute and the pressing assembly are both arranged on the pressing seat body, and the pouring chute and the pouring chute are both arranged on the pouring seat body.

[0012] Preferably, the inkjet printer includes a housing, an ink cartridge, a pump, an ink tube and a nozzle, the ink cartridge and the pump are both installed in the housing, the transfer device includes an XYZ three-axis slide and a transfer motor, the transfer motor is installed on the transfer head of the XYZ three-axis slide, and the nozzle is installed on the end of the output shaft of the transfer motor.

[0013] Preferably, the nozzle includes an inkjet body and an ink control part, the inkjet body is provided with an ink release channel and an ink return channel, one end of the ink release channel is connected to the ink outlet of the inkjet body and the other end is connected to the ink release port of the ink cartridge through an ink tube, and a pump is installed on the pipeline, one end of the ink return channel is connected to the ink release channel and the other end is connected to the ink return port of the ink cartridge through an ink tube, two ink control parts are respectively installed on the ink release channel and the ink return channel, when coding is sprayed, the ink control part on the ink release channel is opened and the ink control part on the ink return channel is closed, when not spraying coding, the ink control part on the ink release channel is closed and the ink control part on the ink return channel is opened.

[0014] Preferably, the ink control member located on the ink release channel is installed between the connection point between the ink release channel and the ink return channel and the ink outlet of the inkjet body.

[0015] The beneficial effects of the present invention are as follows: the present invention sets a guide belt at the entrance of the conveyor belt, and cooperates with the guiding effect of the guide plate and the pushing effect of the pusher to make the cardboard box slowly turn while being transported to the conveyor belt, thereby ensuring that the cardboard box can be transported to the coding device in the correct direction, thereby improving the qualified rate of the product; by threading a nut on the rod body and installing one of the baffles on the nut, it is convenient to adjust the sliding stroke of the slide rod as needed; by respectively setting a turner and a table body with a card box groove at the exit of the conveyor belt, the descending pressure rod can be used to force the lying cardboard box to turn over and vertically insert it into the card box groove for the coder to code, so that the side of the cardboard box that fits the belt body of the conveyor belt can also be fully utilized, and then the reverse rod that moves left and right is used to push the cardboard box to turn back to the lying state after the coding is completed; by setting a first pressure electromagnet and a second pressure electromagnet and the pressing chute, which can make the pressing rod automatically move away from the cardboard box in the flipping state, ensuring that the cardboard box is smoothly and vertically inserted into the card box groove; by setting a flipping motor, the rotating pressing seat body is used to further drive the pressing rod thereon to leave from the left side of the cardboard box; by respectively arranging an ink release channel and an ink return channel with ink control parts installed inside the nozzle, the ink control part located on the ink release channel can be opened and the ink control part located on the ink return channel can be closed during coding, so that the ink can be smoothly sprayed out along the ink release channel and printed on the cardboard box; and when coding is not sprayed, the ink control part located on the ink release channel can be closed and the ink control part located on the ink return channel can be opened, so that the ink can return to the inside of the ink cartridge along the ink return channel to avoid ink leakage; the XYZ three-axis slide and the transfer motor are used to form a transfer device, which can cooperate with the flipper, so that the side of the cardboard box exposed to the outside and the side in contact with the conveyor belt can be printed.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0017] Figure 1 It is a top view of a fully automatic continuous coding system for cardboard boxes of the present invention;

[0018] Figure 2 It is a top view of a guide belt of a fully automatic continuous inkjet coding system for cardboard boxes of the present invention;

[0019] Figure 3 It is a top view of a pusher of a cardboard box full-automatic continuous coding system of the present invention;

[0020] Figure 4 It is a top view of a turning device of a fully automatic continuous coding system for cardboard boxes of the present invention;

[0021] Figure 5 This is a first working state diagram of a turner of a fully automatic continuous coding system for a cardboard box of the present invention;

[0022] Figure 6 It is a left view of the second working state of the turning device of the fully automatic continuous coding system for cardboard boxes of the present invention;

[0023] Figure 7 This is a third working state diagram of a turner of a fully automatic continuous coding system for cardboard boxes of the present invention;

[0024] Figure 8 yes Figure 4 AA section view after removing the flip cylinder and flip motor;

[0025] Fig. 9 It is a connection diagram of a code sprayer and a transfer device of a fully automatic continuous coding system for a cardboard box of the present invention;

[0026] Fig.10 It is a front cross-sectional view of a nozzle of a fully automatic continuous coding system for cardboard boxes of the present invention when coding;

[0027] Fig.11 It is a front sectional view of a nozzle of a fully automatic continuous coding system for cardboard boxes of the present invention when no coding is being done.

[0028] In the figure: 1- conveyor belt, 2- guide belt, 21- guide frame, 22- guide roller, 23- guide motor, 24- transmission belt, 3- pusher, 31- support seat, 32- slide rod, 321- rod body, 322- baffle, 324- nut, 33- driver, 331- first drive electromagnet, 332- second drive electromagnet, 333- support frame, 4- guide plate, 5- flipper, 51- flip cylinder, 52- flip seat, 521- press material seat body, 5211- press material chute, 522- pour material seat body, 5221- pour material chute, 53- Pressing assembly, 531-pressing rod, 532-first pressing electromagnet, 533-second pressing electromagnet, 54-dumping assembly, 541-dumping rod, 542-first pouring electromagnet, 543-second pouring electromagnet, 55-flipping motor, 6-table, 61-card box groove, 7-position sensor, 8-inkjet printer, 81-housing, 82-ink cartridge, 83-pump, 84-ink tube, 85-nozzle, 851-inkjet body, 8511-ink release channel, 8512-ink return channel, 852-ink control part, 9-transfer device, 94-transfer motor. [Specific implementation method]

[0029] See also Figures 1 to 11The present invention discloses a fully automatic continuous coding system for cardboard boxes, comprising a conveyor belt 1, a guide belt 2, a pusher 3, a guide plate 4, a flipper 5, a table 6, a position sensor 7, a coder 8, a transfer device 9 and an electric control cabinet. The two guide plates 4 are respectively installed at the entrance of the conveyor belt 1 and are located above the guide belt 2. The spacing of the guide belt 2 gradually increases from the end close to the conveyor belt 1 to the end away from the conveyor belt 1. The pusher 3 includes a support seat 31, a slide bar 32 and a driver 33. The support seats 31 of several groups of the pushers 3 are respectively installed on the guide plate 4. Several slide bars 32 are respectively installed horizontally on the support seats 31 and are driven by the driver 33 to move forward and backward. The table 6 is installed at the exit of the conveyor belt 1 and a card box groove 61 is provided on the top surface of the table. The flipper 5 includes a flip cylinder 51, a turning seat 52, a pressing assembly 53 and a pouring assembly 54, the turning cylinder 51 is located above the outlet of the conveyor belt 1 and the end of the telescopic rod is set downward and connected to a number of turning seats 52, the pressing assembly 53 and the pouring assembly 54 are respectively installed in the bottom surface of the turning seat 52, the pressing rod 531 and the pouring rod 541 of the pressing assembly 53 and the pouring assembly 54 can be driven by the pressing drive member and the pouring drive member respectively to move along the conveying direction of the conveyor belt 1, several groups of the position sensors 7 are respectively installed on the table top of the table body 6, the inkjet printer 8 is installed on one side of the outlet of the conveyor belt 1 and the nozzle 85 is driven to move by the transfer device 9, and the electric control cabinet is respectively electrically connected to the conveyor belt 1, the guide belt 2, the pusher 3, the turner 5, the position sensor 7, the inkjet printer 8 and the transfer device 9.

[0030] The guide belt 2 includes a guide frame 21, a guide roller 22, a guide motor 23 and a transmission belt 24. Several guide rollers 22 are rotatably connected to the guide frame 21. The guide rollers 22 are horizontally arranged and the top surfaces are flush with the top surface of the belt body of the conveyor belt 1. The central axis of the guide roller 22 is perpendicular to the conveying direction of the conveyor belt 1. The end of one of the guide rollers 22 is connected to the output shaft of the guide motor 23 and is connected to the remaining guide rollers 22 through the transmission belt 24.

[0031] The sliding rod 32 includes a rod body 321 and a baffle 322 . The rod body 321 is slidably connected to the support seat 31 . Two baffles 322 are respectively installed outside the rod body 321 and are arranged on both sides of the support seat 31 .

[0032] The baffle plate 322 located away from the middle of the material guide belt 2 is installed on the nut 324 , and the nut 324 is threadedly connected to the outside of the rod body 321 .

[0033] The driver 33 includes a first driving electromagnet 331, a second driving electromagnet 332 and a support frame 333. The first driving electromagnet 331 is fixed to one end of the rod body 321 away from the middle of the material guide belt 2. The support frame 333 is installed on the side of the support seat 31 away from the middle of the material guide belt 2. Several second driving electromagnets 332 are respectively fixed on the support frame 333 and correspond one by one to the first driving electromagnets 331.

[0034] A pressing chute 5211 and a dumping chute 5221 are respectively provided on the bottom surface of the flip seat 52 along the conveying direction of the conveyor belt 1, and the pressing driving component includes a first pressing electromagnet 532 and a second pressing electromagnet 533. One end of the pressing rod 531 is slidably connected in the pressing chute 5211 and the first pressing electromagnet 532 is installed inside, and the second pressing electromagnet 533 is installed in the flip seat 52 and located at the end of the pressing chute 5211 away from the dumping chute 5221. The dumping driving component includes a first dumping electromagnet 542 and a second dumping electromagnet 543. One end of the dumping rod 541 is slidably connected in the dumping chute 5221 and the first dumping electromagnet 542 is installed inside, and the second dumping electromagnet 543 is installed in the flip seat 52 and located at the end of the dumping chute 5221 away from the pressing chute 5211.

[0035] The flip seat 52 includes a material pressing seat body 521 and a material pouring seat body 522. One end of the material pressing seat body 521 is provided with a convex column rotatably connected to the material pouring seat body 522 and driven to rotate by a flip motor 55. The top end of the material pouring seat body 522 is connected to the output shaft end of the flip cylinder 51. The material pressing chute 5211 and the material pressing assembly 53 are both arranged at the material pressing seat body 521. The material pouring chute 5221 and the material pouring chute 5221 are both arranged at the material pouring seat body 522.

[0036] The inkjet printer 8 includes a housing 81, an ink cartridge 82, a pump 83, an ink tube 84 and a nozzle 85. The ink cartridge 82 and the pump 83 are both installed in the housing 81. The transfer device 9 includes an XYZ three-axis slide and a transfer motor 94. The transfer motor 94 is installed on the transfer head of the XYZ three-axis slide. The nozzle 85 is installed at the end of the output shaft of the transfer motor 94.

[0037] The nozzle 85 includes an inkjet body 851 and an ink control member 852. An ink release channel 8511 and an ink return channel 8512 are provided in the inkjet body 851. One end of the ink release channel 8511 is connected to the ink outlet of the inkjet body 851, and the other end is connected to the ink release port of the ink cartridge 82 through an ink tube 84, and a pump 83 is installed on the pipeline. One end of the ink return channel 8512 is connected to the ink release channel 8511, and the other end is connected to the ink return port of the ink cartridge 82 through an ink tube 84. The two ink control members 852 are respectively installed on the ink release channel 8511 and the ink return channel 8512. When coding is being sprayed, the ink control member 852 on the ink release channel 8511 is opened and the ink control member 852 on the ink return channel 8512 is closed. When coding is not being sprayed, the ink control member 852 on the ink release channel 8511 is closed and the ink control member 852 on the ink return channel 8512 is opened.

[0038] The ink control member 852 located on the ink release channel 8511 is installed between the connection point between the ink release channel 8511 and the ink return channel 8512 and the ink outlet of the inkjet body 851 .

[0039] Working process of the present invention:

[0040] See also Figure 3 First, according to the need, screw the nut 324 on the rod body 321 to adjust the distance between the two baffles 322. Figure 1 , 2 3. When feeding, the worker can directly place the folded cardboard box on the guide belt 2. At this time, the guide motor 23 cooperates with the transmission belt 24 to rotate each guide roller 22, thereby driving the cardboard box thereon to gradually approach the conveyor belt 1. During this period, the inclined guide plate 4 makes the cardboard box gradually turn until it is adjusted to a suitable direction and then enters the conveyor belt 1. In addition, the pusher 3 can also be started to assist the cardboard box in turning. When the pusher 3 is started, the first drive electromagnet 331 and the second drive electromagnet 332 attract or repel each other, so that the slide bar 32 moves back and forth continuously on the support seat 31, thereby pushing the cardboard box to turn.

[0041] When the conveyor belt 1 transports the folded cardboard box to the table top of the table body 6 and triggers the position sensor 7, the conveyor belt 1 stops conveying. Figure 5 At this time, the pressing rod 531 and the left end of the lying cardboard box are both located above the cardboard box groove 61. Figure 6 Then, the turning cylinder 51 drives the turning seat 52 and the parts connected thereto to slowly descend, thereby using the pressing rod 531 to press down the left end of the cardboard box, turning it counterclockwise and vertically inserting it into the cardboard box groove 61. Figure 8, and the second pressing electromagnet 533 then attracts the first pressing electromagnet 532 to move closer, so that the pressing rod 531 moves to the left to prevent it from blocking the turning of the carton. In addition, the turning motor 55 can also be used to drive the pressing seat 521 to rotate, drive the pressing rod 531 to rotate, and thus the pressing rod 531 leaves the left side of the carton.

[0042] See also Fig. 9 , 10 Then, the pump 83 delivers the ink in the ink cartridge 82 along the ink tube 84 into the ink discharge channel 8511 and then sprays it out, thereby printing the desired mark on the side of the carton that was once in close contact with the belt body of the conveyor belt 1 (i.e., the right side of the carton). Next, the XYZ three-axis slide table drives the transfer motor 94 and the nozzle 85 installed thereon to move to the left side of the carton, and the transfer motor 94 then drives the nozzle 85 to rotate to face the carton, thereby performing a second spray print on the carton.

[0043] See also Figure 7 and 8 Then, the first feeding electromagnet 542 and the second feeding electromagnet 543 repel each other, causing the feeding rod 541 to move leftward, pushing the cardboard box after the coding is completed to turn counterclockwise again, so that it lies flat on the several feeding rollers of the feeding assembly 63. Finally, the unloading device can be used again to continue to convey the lying cardboard box to the left for the next step of processing.

[0044] The present invention provides a guide belt at the entrance of the conveyor belt, and cooperates with the guiding effect of the guide plate and the pushing effect of the pusher to make the cardboard box slowly turn while being transported to the conveyor belt, thereby ensuring that the cardboard box can be transported to the coding device in the correct direction, thereby improving the qualified rate of the product; by threading a nut on the rod body and installing one of the baffles on the nut, it is convenient to adjust the sliding stroke of the slide bar as needed; by respectively providing a flipper and a table body with a card box groove at the exit of the conveyor belt, the descending press rod can be used to force the lying cardboard box to flip over and vertically insert it into the card box groove for the code sprayer to perform coding, so that the side of the cardboard box that is in contact with the belt body of the conveyor belt can also be fully utilized, and then the reverse rod that moves left and right is used to push the cardboard box after coding to flip back to a lying state again; by providing a first press electromagnet, a second press electromagnet and a press slide The groove can make the pressing rod automatically move away from the cardboard box in the flipping state, ensuring that the cardboard box is smoothly and vertically inserted into the cardboard box groove; by setting a flipping motor, the rotating pressing seat body is used to further drive the pressing rod thereon to leave from the left side of the cardboard box; by respectively arranging an ink discharge channel and an ink return channel with ink control parts installed inside the nozzle, the ink control part located on the ink discharge channel can be opened and the ink control part located on the ink return channel can be closed during coding, so that the ink can be smoothly sprayed out along the ink discharge channel and printed on the cardboard box; and when coding is not sprayed, the ink control part located on the ink discharge channel can be closed and the ink control part located on the ink return channel can be opened, so that the ink can return to the inside of the ink cartridge along the ink return channel to avoid ink leakage; the XYZ three-axis slide and the transfer motor are used to form a transfer device, which can cooperate with the flipper, so that the side of the cardboard box exposed to the outside and the side in contact with the conveyor belt can be printed.

[0045] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A fully automatic continuous inkjet system for cardboard boxes, characterized by: The invention comprises a conveyor belt (1), a guide belt (2), a pusher (3), a guide plate (4), a flipper (5), a table (6), a position sensor (7), an inkjet printer (8), a transfer device (9) and an electric control cabinet, wherein two guide plates (4) are respectively installed at the entrance of the conveyor belt (1) and are located above the guide belt (2), and the spacing of the guide belt (2) gradually increases from one end close to the conveyor belt (1) to the end far from the conveyor belt (1). The pusher (3) comprises a support seat (31), a slide rod (32) and a driver (33), and a plurality of groups of support seats (31) of the pushers (3) are respectively installed on the guide plates (4), and a plurality of slide rods (32) are respectively installed horizontally on the support seat (31) and driven by the driver (33). The table body (6) is installed at the outlet of the conveyor belt (1) and a card box groove (61) is provided on the top surface of the table board. The flipper (5) comprises a flip cylinder (51), a flip seat (52), a material pressing assembly (53) and a material pouring assembly (54). The flip cylinder (51) is located above the outlet of the conveyor belt (1) and the end of the telescopic rod is arranged downward and connected to a plurality of flip seats (52). The material pressing assembly (53) and the material pouring assembly (54) are respectively installed in the bottom surface of the flip seat (52). The material pressing rod (531) and the material pouring rod (541) of the material pressing assembly (53) and the material pouring assembly (54) can be driven by the material pressing driving member and the material pouring driving member respectively to move along the conveying direction of the conveyor belt (1). The position sensors (7) are respectively installed on the table top of the table body (6), the inkjet printer (8) is installed on one side of the outlet of the conveyor belt (1) and the nozzle (85) is driven to move by the transfer device (9), the electric control cabinet is respectively electrically connected to the conveyor belt (1), the guide belt (2), the pusher (3), the flipper (5), the position sensor (7), the inkjet printer (8) and the transfer device (9), a pressing chute (5211) and a pouring chute (5221) are respectively provided on the bottom surface of the flip seat (52) along the conveying direction of the conveyor belt (1), the pressing drive component includes a first pressing electromagnet (532) and a second pressing electromagnet (533), one end of the pressing rod (531) is slidably connected to the pressing chute (5211) and a The first material pressing electromagnet (532) and the second material pressing electromagnet (533) are installed in the flip seat (52) and are located at one end of the material pressing chute (5211) away from the material pouring chute (5221). The material pouring driving member includes a first material pouring electromagnet (542) and a second material pouring electromagnet (543). One end of the material pouring rod (541) is slidably connected to the material pouring chute (5221) and has the first material pouring electromagnet (542) installed inside. The second material pouring electromagnet (543) is installed in the flip seat (52) and is located at one end of the material pouring chute (5221) away from the material pressing chute (5211). The inkjet printer (8) includes a housing (81), an ink cartridge (82), a pump (83), an ink tube (84) and a nozzle (85).The ink cartridge (82) and the pump (83) are both installed in the housing (81); the transfer device (9) comprises an XYZ three-axis slide and a transfer motor (94); the transfer motor (94) is installed on the transfer head of the XYZ three-axis slide; the nozzle (85) is installed at the end of the output shaft of the transfer motor (94); the nozzle (85) comprises an inkjet body (851) and an ink control member (852); an ink discharge channel (8511) and an ink return channel (8512) are provided in the inkjet body (851); one end of the ink discharge channel (8511) is connected to the ink outlet of the inkjet body (851) and the other end is connected to the ink discharge port of the ink cartridge (82) through the ink tube (84). The ink return channel (8512) is connected to the ink discharge channel (8511) and a pump (83) is installed on the pipeline. One end of the ink return channel (8512) is connected to the ink discharge channel (8511) and the other end is connected to the ink return port of the ink cartridge (82) through the ink tube (84). The two ink control parts (852) are respectively installed on the ink discharge channel (8511) and the ink return channel (8512). When the ink is sprayed, the ink control part (852) on the ink discharge channel (8511) is opened and the ink control part (852) on the ink return channel (8512) is closed. When the ink is not sprayed, the ink control part (852) on the ink discharge channel (8511) is closed and the ink control part (852) on the ink return channel (8512) is opened.

2. A fully automatic continuous inkjet system for cardboard boxes as claimed in claim 1, characterized in that: The material guide belt (2) comprises a material guide frame (21), a material guide roller (22), a material guide motor (23) and a transmission belt (24); a plurality of the material guide rollers (22) are rotatably connected to the material guide frame (21); the material guide rollers (22) are arranged horizontally and their top surfaces are flush with the top surface of the belt body of the conveyor belt (1); the central axis of the material guide rollers (22) is perpendicular to the conveying direction of the conveyor belt (1); the end of one of the material guide rollers (22) is connected to the output shaft of the material guide motor (23) and is transmission-connected to the remaining material guide rollers (22) via the transmission belt (24).

3. The fully automatic continuous inkjet system for cardboard boxes according to claim 1, characterized in that: The sliding rod (32) comprises a rod body (321) and a baffle (322); the rod body (321) is slidably connected to the support seat (31); and two baffles (322) are respectively mounted outside the rod body (321) and arranged on both sides of the support seat (31).

4. A fully automatic continuous inkjet system for cardboard boxes as claimed in claim 3, characterized in that: A baffle (322) located away from the middle of the material guide belt (2) is mounted on a nut (324), and the nut (324) is threadedly connected to the outside of the rod body (321).

5. The fully automatic continuous inkjet system for cardboard boxes as claimed in claim 1, characterized in that: The driver (33) comprises a first driving electromagnet (331), a second driving electromagnet (332) and a support frame (333); the first driving electromagnet (331) is fixed to an end of the rod body (321) away from the middle of the material guide belt (2); the support frame (333) is installed on a side of the support seat (31) away from the middle of the material guide belt (2); and a plurality of the second driving electromagnets (332) are respectively fixed on the support frame (333) and correspond one to one with the first driving electromagnets (331).

6. The fully automatic continuous inkjet system for cardboard boxes as claimed in claim 1, characterized in that: The flip seat (52) comprises a material pressing seat body (521) and a material pouring seat body (522); one end of the material pressing seat body (521) is provided with a boss rotatably connected to the inside of the material pouring seat body (522) and driven to rotate by a flip motor (55); the top end of the material pouring seat body (522) is connected to the end of the output shaft of the flip cylinder (51); the material pressing chute (5211) and the material pressing assembly (53) are both arranged on the material pressing seat body (521); and the material pouring chute (5221) and the material pouring chute (5221) are both arranged on the material pouring seat body (522).

7. The fully automatic continuous inkjet system for cardboard boxes according to claim 1, characterized in that: The ink control member (852) located on the ink release channel (8511) is installed between the connection point between the ink release channel (8511) and the ink return channel (8512) and the ink outlet of the inkjet body (851).

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