Automatic packaging carton printing device and use method thereof

Abstract

The present invention discloses an automatic packaging carton printing device and a method of using the same, and relates to the technical field of carton printing and unloading technology. The structure of the present invention includes a printing table and a packaging box, and the top surface of the printing table is fixedly installed with a printing device and a matching conveyor belt, and also includes: a unloading component, which is used to assist in stacking cartons. The unloading component is fixedly installed on a side of the printing table close to the discharge of the printing device. The present invention arranges a first partition plate and a second partition plate. When the first partition plate is pressed down by the packaging box, the first partition plate will drive the wedge block to move downward and disengage from the through groove, and the second partition plate will then move outward under the elastic action of the second spring, and the next packaging box will fall on the top of the second partition plate. After the second partition plate is pressed down by the packaging box, a group of adjacent second partition plates above will extend out according to the same principle, so as to receive the next packaging box. The blocking of the second partition plate can prevent several packaging boxes from contacting each other, and prevent the ink from being adhered or rubbed off.

Description

Technical Field

[0001] The present invention relates to the technical field of carton printing and unloading, and in particular to an automatic packaging carton printing device and a method for using the same. Background Art

[0002] After the product is packaged in a carton, the production date and related product information need to be printed on the surface of the carton. This is usually done using silk screen printing technology. However, with existing printing devices, after printing is completed, the cartons need to be manually stacked and collected, and then transported to the next work station via a cart. Manual unloading is time-consuming and labor-intensive.

[0003] Patent publication number CN209320475U is a carton printing machine positioning device, which can facilitate the drying of ink on the surface of the printed carton, reducing usage limitations; and can facilitate the collection of printed cartons, improving practicality; includes a support table, a frame, a front fixed plate, a rear fixed plate, multiple sets of adjustment threaded rods and multiple sets of card plates, and the front ends of the multiple sets of adjustment threaded rods are respectively provided with multiple sets of knobs; also includes two sets of left fixed plates, two sets of right fixed plates, a left drive roller, a right drive roller, a drive belt, multiple sets of support rods, an adjustment box, a spiral tube, a water inlet pipe, a water outlet pipe and a fan, the front and rear ends of the left drive roller and the right drive roller are respectively provided with two sets of left fixed shafts and two sets of right fixed shafts, and the bottom of the adjustment box is connected with multiple sets of diverter pipes; also includes a discharge plate, two sets of positioning rods, a receiving box, multiple sets of support springs and a support plate;

[0004] Although this patent can automatically collect printed cartons, during the stacking process, the cartons will fall directly on top of the previous carton, which will not only easily damage the surface of the carton, but also wear off the printed ink due to direct friction with the carton, thereby affecting the packaging appearance of the product. Summary of the Invention

[0005] The object of the present invention is to provide an automated packaging carton printing device and a method of using the same to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an automated packaging carton printing device, comprising a printing table and a packaging box, wherein a printing device and a matching conveyor belt are fixedly mounted on the top surface of the printing table, and further comprising:

[0007] A discharge assembly for assisting in stacking cartons, the discharge assembly being fixedly mounted on a side of the printing table close to the discharge of the printing equipment;

[0008] The unloading assembly includes a linear slide and a chain. The linear slide is fixedly mounted on one side of the printing table. A first motor for driving the linear slide is fixedly mounted on one side of the linear slide. A transmission box is fixedly mounted on the top of the moving end of the linear slide. The top of the transmission box is configured to be hollow. A partition is fixedly provided inside the transmission box. The internal cavity of the transmission box is evenly divided into two stacking cavities by the partition.

[0009] The anti-ink sticking component is used to prevent the printed surface of the carton from sticking and to assist in drying the printed surface. The anti-ink sticking component is fixedly arranged on the two side walls adjacent to the two stacking cavities and the partition.

[0010] Preferably, the partition is symmetrically provided with two installation cavities, and the two installation cavities are respectively communicated with the two stacking cavities. A group of rotating shafts are equidistantly connected to the inner walls on both sides of each installation cavity. The number of rotating shafts in each group is multiple, and the outside of the rotating shafts is fixedly sleeved with rollers for assisting in stacking cartons. One end of the two groups of rotating shafts rotates through one side wall of the installation cavity and is fixedly sleeved with sprockets. The sprockets in the same group are connected by chain transmission. The outer end of one of the rotating shafts in each group is fixedly connected to a second motor, and the second motor is fixedly installed on the outside of the transmission box.

[0011] Preferably, the side of the stacking cavity away from the partition is set as a hollow structure, and two groups of mounting plates are fixedly installed on the outer side of the stacking cavity close to the hollow surface. Each group of mounting plates is rotatably connected with a mounting shaft through a coil spring, and the external fixed sleeve of the mounting shaft is provided with a door body for blocking the carton, and the inner side surface of each door body is rollingly installed with a roller of the same size as the roller.

[0012] Preferably, the bottom end of the mounting shaft rotates through the corresponding mounting plate and is fixedly sleeved with a gear, and four toothed plates adapted to the gears are fixedly mounted on the top of the linear slide.

[0013] Preferably, the ink-sticking prevention assembly includes a first partition plate, and two side walls of the stacking cavity adjacent to the partition plate are sequentially provided with a third mounting groove, a plurality of second mounting grooves, and a first mounting groove from top to bottom. The first partition plate is vertically slidably mounted inside the first mounting groove, and the outer end of the first partition plate extends into the interior of the stacking cavity. A first spring is fixedly connected between the bottom surface of the first partition plate and the inner wall of the first mounting groove.

[0014] The interior of the second mounting groove and the third mounting groove are both vertically slidably installed with a slide cylinder, and a "T"-shaped second partition plate is slidably installed inside the slide cylinder, and the second partition plate is fixedly connected to the inner wall of the slide cylinder with a second spring, and the movable end of the second partition plate slides through a side plate of the slide cylinder, and the second partition plate is provided with a through slot, and the tops of the multiple slide cylinders arranged inside the third mounting groove are fixedly connected to a connecting rod, and the top of the connecting rod slides through the upper side wall of the second mounting groove and is fixedly connected with a wedge block, and the wedge blocks extend to the interior of the through slot provided on the adjacent second partition plate, and the through slot is close to the side surface of the slide cylinder and is set in an arc shape, and the wedge surface of the wedge block is pressed against the arc surface of the through slot.

[0015] Preferably, a plurality of fans are evenly embedded in the inner side wall of the stacking cavity, and an electric heating block is fixedly provided at the bottom of the movable end of the second partition plate.

[0016] Preferably, a control button electrically connected to the first motor is fixedly provided inside the third mounting slot, and the control button is located directly below the corresponding slide cylinder.

[0017] Preferably, an L-shaped accommodating cavity is provided on the same side of the partition installation cavity, the accommodating cavity is communicated with the stacking cavity, a movable plate is slidably installed on the bottom side wall of the stacking cavity, the inner end of the movable plate is movably extended to the interior of the accommodating cavity, and is fixedly connected to a limiting plate, and a plurality of suction cups are evenly fixed on a side of the limiting plate close to the stacking cavity.

[0018] Preferably, the bottom side wall of the stacking cavity is provided with a slide groove, and the slide groove is set to an arc shape with a deep inside and a shallow outside. The bottom of the movable plate is fixed with a slide column slidably installed inside the slide groove, and the movable plate is slidably installed on the bottom side wall of the stacking cavity through the slide column.

[0019] A method for using an automated packaging carton printing device, the method comprising the following steps:

[0020] S1. Preparatory work: Drive the linear slide to move the transfer box horizontally so that any stacking cavity is facing the transport outlet of the conveyor belt. Start the second motor, which rotates the connected shaft and sprocket. The sprocket drives the other sprockets to rotate synchronously through the chain. The corresponding multiple shafts rotate accordingly and drive the sleeved rollers to rotate synchronously downward;

[0021] S2. Printing and discharging: Place the packaging box at the entrance of the conveyor belt. The printing equipment prints the production date and other ink text on the top of the packaging box. The printed packaging box will fall from the outlet of the conveyor belt into the stacking cavity below. The downward rotating roller and the roller will drive the packaging box downward until the packaging box falls on the top of the first partition plate, and the first partition plate is compressed downward to the maximum distance.

[0022] S3, non-contact stacking of packaging boxes: when the first partition plate is pressed down by the packaging box, the wedge-shaped block connected to its top moves down and disengages from the through-slot provided in the second partition plate. The second partition plate then moves outward under the elastic action of the second spring and extends a short distance into the interior of the stacking cavity. When the next packaging box falls into the stacking cavity, it will only fall on the top of the extended second partition plate. The second partition plate is then pressed down, and the same principle is used to extend the other second partition plate above it. The obstruction of the second partition plate can achieve the purpose of non-contact stacking of packaging boxes;

[0023] S4. Drying the ink. Fans are embedded on both sides of the stacking chamber to help dry the ink when the packaging box enters the stacking chamber. An electric heating block is also embedded at the bottom of the extended end of the second partition plate. The heat generated by the electric heating block is blown to the ink printed on the packaging box through the fan, thereby further accelerating the drying speed of the ink.

[0024] S5. Replace the stacking chamber. When the second partition plate and the second partition plate provided inside the third installation slot are also pressed down by the packaging box, the stacking chamber can no longer stack the packaging box. When the slide moves downward, it squeezes the control button. The control button starts and controls the first motor to drive the linear slide to move the transfer box to one side at a constant speed to the maximum distance. At this time, the other empty stacking chamber is just below the conveyor belt outlet, which facilitates the continuous stacking of packaging boxes by this device.

[0025] S6. The door opens. When the transfer box moves, the gear installed on one side of the door moves closer to and contacts the toothed plate. When the gear moves relative to the toothed plate, it drives the mounting shaft to overcome the elasticity of the coil spring and rotate 180 degrees. The mounting shaft drives the door to rotate together, thereby exposing the packaging boxes inside the stacking cavity, making it easier for staff to transfer the stacked packaging boxes in time.

[0026] S7. Pull the moving plate outward at a constant speed. When the slide column slides along the arc surface set in the slide groove, the moving plate will rise and lift the first partition plate. The wedge-shaped block connected to the top of the first partition plate will be reinserted into the through slot of the second partition plate above, thereby pushing the second partition plate into the slide cylinder. The packaging box will then fall on the top of the first packaging box, and the above-mentioned slide cylinder will drive the wedge-shaped block to move upward under the elastic force of the third spring. In the same principle, the several second partition plates above will all retract, and the packaging boxes placed on top of them will fall one by one and be stacked together.

[0027] S8. Transfer the packaging boxes and continue to pull out the movable plate. The movable plate begins to slide horizontally, and the limiting plate connected to the top of the movable plate begins to contact the packaging boxes. Since the limiting plate is provided with a notch, the limiting plate can pass through the first partition plate and bring out all the packaging boxes. The suction cup provided on the surface of the limiting plate can adsorb and fix the packaging boxes, thereby ensuring that the staff can smoothly pull out several packaging boxes without affecting the stacking of the packaging boxes. The staff only needs to move the stacked packaging boxes to the cart to transport them to the next location.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention provides rollers and wheels that fit the size of the packaging box, so that the packaging box can be moved down to the bottom of the stacking cavity through the rotation of the rollers, reducing the impact force generated by the free fall of the packaging box and preventing damage to the packaging box surface;

[0030] 2. The present invention provides a first partition plate and a second partition plate. When the first partition plate is pressed down by the packaging box, the first partition plate will drive the wedge block to move down and out of the through slot. The second partition plate will then move outward under the elastic action of the second spring, and the next packaging box will fall on the top of the second partition plate. After the second partition plate is pressed down by the packaging box, the upper adjacent set of second partition plates will extend according to the same principle to receive the next packaging box. The obstruction of the second partition plate can prevent several packaging boxes from contacting each other, and prevent the ink from being adhered or rubbed off. The device can automatically stack packaging boxes while protecting the printed ink, making it convenient to subsequently transport the packaging boxes to the next process site, saving more time and effort.

[0031] 3. The present invention can stack multiple packaging boxes at once by providing multiple second mounting slots and corresponding slides and second partition plates. Since the heights of the first mounting slot, multiple second mounting slots, and third mounting slots decrease from bottom to top, each time the slide is pressed downward by a packaging box, the wedge-shaped block below will not re-enter the interior of the through slot, but will still have a small distance. By providing a second partition plate to receive the packaging box, the squeezing of the packaging box below during the stacking process can also be reduced.

[0032] 4. The present invention embeds fans on both sides of the stacking chamber. When the fans are turned on, they help dry the ink when the packaging boxes enter the stacking chamber. The symmetrical fans also provide the packaging boxes with equal blowing force, which can also keep the packaging boxes in the center, making the stacking more upright. The bottom of the protruding end of the second partition plate is also embedded with an electric heating block. The heat generated by the electric heating block is blown to the ink printed on the packaging boxes through the fans, thereby further accelerating the drying speed of the ink.

[0033] 5. The present invention is provided with a control button. When the second partition plate provided in the third mounting slot is also pressed down by the packaging box, the stacking chamber can no longer stack the packaging boxes. The slide cylinder then presses the control button, which activates the first motor to cause the linear slide to drive the transfer box to move to one side at a constant speed to the maximum distance. At this time, the other empty stacking chamber is located just below the conveyor belt outlet, facilitating continuous stacking of packaging boxes by the device, thereby improving the overall efficiency of the printing process.

[0034] 6. The present invention provides a toothed plate and a gear. When a stacking chamber full of boxes is moved, the gear on that side will move relative to the toothed plate, thereby driving the mounting shaft to overcome the elasticity of the coil spring and rotate. The mounting shaft then drives the door body to rotate together, thereby exposing the boxes inside the stacking chamber, making it easier for workers to transfer the stacked boxes in a timely manner.

[0035] 7. The present invention pulls the movable plate outward at a uniform speed. Since the slide groove is set as an arc surface, the movable plate will rise and lift up the first partition plate when moving outward. The wedge-shaped block connected to the top of the first partition plate will be reinserted into the through groove of the second partition plate above, and then the second partition plate will be pushed into the interior of the slide cylinder, and the packaging box will fall onto the first packaging box. After the second partition plate is retracted into the interior of the second installation groove, it will move upward together with the slide cylinder under the elastic force of the third spring, so that the second partition plate above the adjacent upper part is also retracted according to the same principle, and several packaging boxes will be stacked together in contact. At this time, the ink is dry and will not cause ink adhesion. Several packaging boxes fall from the adjacent second partition plates in turn. The falling distance is small and will not cause collision damage to the packaging boxes.

[0036] 8. The present invention sets a limit plate. When the movable plate is further pulled out, the movable plate starts to slide horizontally, and the limit plate connected to the top of the movable plate starts to contact the packaging box. Since the limit plate is provided with a notch, the limit plate can pass through the first partition plate and bring out several packaging boxes. The staff only needs to pull out one action to take out the transfer packaging box, which is simple and convenient to operate.

[0037] 9. The present invention arranges a suction cup on the surface of the limiting plate, which can adsorb and fix the packaging box when it contacts it, thereby preventing the packaging box from rotating due to unbalanced force when the limiting plate brings out the packaging box, allowing the staff to pull out several stacked packaging boxes more smoothly without affecting the stacking situation of the packaging boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a three-dimensional diagram of an automatic packaging carton printing device of the present invention;

[0039] Figure 2 For the present invention Figure 1 Schematic diagram of some structures in ;

[0040] Figure 3 It is a front cross-sectional view of the discharge assembly of the present invention;

[0041] Figure 4 It is a front cross-sectional view of the unloading assembly of the present invention when stacking packaging boxes;

[0042] Figure 5 It is a right side sectional view of the discharge assembly of the present invention;

[0043] Figure 6 For the present invention Figure 3 A schematic diagram of the structure at point A in the middle;

[0044] Figure 7 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0045] Figure 8 This is a three-dimensional diagram of an automatic packaging carton printing device of the present invention when preparing to unload materials;

[0046] Figure 9 A perspective view of the unloading assembly of the present invention when preparing to unload;

[0047] Figure 10 It is a perspective view of the second partition plate of the present invention.

[0048] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0049] 1. Printing table; 11. Printing equipment; 12. Conveyor belt;

[0050] 2. Linear slide; 21. First motor; 22. Gear plate;

[0051] 3. Transfer box; 31. Partition; 32. Stacking cavity; 33. First mounting slot; 331. First partition; 332. First spring; 34. Second mounting slot; 35. Third mounting slot; 351. Control button;

[0052] 4. Mounting cavity; 41. Rotating shaft; 42. Roller; 43. Sprocket; 44. Chain; 45. Second motor;

[0053] 5. Mounting plate; 51. Mounting shaft; 52. Door body; 53. Roller; 54. Gear;

[0054] 6. Slide; 61. Second partition plate; 62. Second spring; 63. Through slot; 64. Third spring; 65. Connecting rod; 651. Wedge block; 66. Electric heating block;

[0055] 7. Accommodating cavity; 71. Moving plate; 72. Limiting plate; 73. Sliding column; 74. Sliding groove; 75. Suction cup;

[0056] 8. Fan;

[0057] 9. Packing box. DETAILED DESCRIPTION

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0059] See also Figures 1 to 10 , the present invention provides a technical solution:

[0060] An automated packaging carton printing device includes a printing table 1 and a packaging box 9. A printing device 11 and a matching conveyor belt 12 are fixedly mounted on the top surface of the printing table 1. The device also includes:

[0061] A discharge assembly for assisting in stacking cartons. The discharge assembly is fixedly mounted on a side of the printing table 1 close to the discharge of the printing device 11;

[0062] The unloading assembly includes a linear slide 2 and a chain 44. The linear slide 2 is fixedly mounted on one side of the printing table 1. A first motor 21 for driving the linear slide 2 is fixedly mounted on one side of the linear slide 2. A transmission box 3 is fixedly mounted on the top of the moving end of the linear slide 2. The top of the transmission box 3 is configured to be hollow. A partition 31 is fixedly provided inside the transmission box 3. The internal cavity of the transmission box 3 is evenly divided into two stacking cavities 32 by the partition 31.

[0063] The anti-ink sticking component is used to prevent the printed surface of the carton from sticking and to assist in drying the printed surface. The anti-ink sticking component is fixedly arranged on the two side walls adjacent to the two stacking cavities 32 and the partition 31.

[0064] First embodiment

[0065] The partition 31 is symmetrically provided with two mounting cavities 4, and the two mounting cavities 4 are respectively communicated with the two stacking cavities 32. A group of rotating shafts 41 are equidistantly connected to the inner walls on both sides of each mounting cavity 4. The number of the rotating shafts 41 in each group is multiple, and the outer side of the rotating shaft 41 is fixedly sleeved with a roller 42 for assisting in stacking cartons. One end of the two groups of rotating shafts 41 rotates through a side wall of the mounting cavity 4 and is fixedly sleeved with a sprocket 43. The sprockets 43 in the same group are connected by a chain 44 for transmission. The outer end of one of the rotating shafts 41 in each group is fixedly connected to a second motor 45, and the second motor 45 is fixedly mounted on the outside of the transmission box 3;

[0066] The side of the stacking cavity 32 away from the partition 31 is set as a hollow structure. Two groups of mounting plates 5 are fixedly installed on the outer side of the stacking cavity 32 close to the hollow surface. A mounting shaft 51 is rotatably connected between each group of mounting plates 5 through a coil spring. A door body 52 for blocking the carton is fixedly sleeved on the outer side of the mounting shaft 51. A roller 53 of the same size as the roller 42 is rotatably installed on the inner side of each door body 52.

[0067] The bottom end of the mounting shaft 51 rotates through the corresponding mounting plate 5 and is fixedly sleeved with a gear 54 . Four toothed plates 22 adapted to the gears 54 are fixedly mounted on the top of the linear slide 2 .

[0068] During operation, the linear slide 2 is set on one side of the printing table 1, and the first motor 21 is started to drive the linear slide 2 to move the transfer box 3 horizontally, so that any stacking cavity 32 is facing the transport outlet of the conveyor belt 12, and the second motor 45 is started. The second motor 45 will drive the connected rotating shaft 41, and the corresponding sprocket 43 will rotate accordingly. The sprocket 43 drives other sprockets 43 to rotate synchronously together through the chain 44, and the corresponding multiple rotating shafts 41 rotate accordingly, so that the rollers 42 sleeved on the outside of the multiple rotating shafts 41 rotate downward synchronously, and then the packaging box 9 to be printed is placed on the inlet end of the conveyor belt 12, and the conveyor belt 12 drives the packaging box 9 to the printing place of the printing equipment 11, and the printing equipment 11 presses the top of the packaging box 9 After printing the production date and other text, the printed packaging box 9 will fall from the outlet of the conveyor belt 12 into the stacking cavity 32 below. The downward rotating roller 42 and the rollingly installed roller 53 will drive the packaging box 9 to move downward until the packaging box 9 falls on the top of the two first partition plates 331. The weight of the carton and the products inside will overcome the elasticity of the first spring 332, thereby compressing the first partition plate 331 downward until the first partition plate 331 moves down to the maximum distance. By setting the roller 42 and the roller 53 that fit the size of the packaging box 9, the packaging box 9 can be moved down to the bottom of the stacking cavity 32 through the rotation of the roller 42, thereby reducing the collision force generated when the packaging box 9 falls freely, and preventing damage to the surface of the packaging box 9.

[0069] Second embodiment

[0070] The ink-sticking prevention assembly includes a first partition plate 331. The two side walls of the stacking cavity 32 adjacent to the partition plate 31 are sequentially provided with a third mounting groove 35, a plurality of second mounting grooves 34, and a first mounting groove 33 from top to bottom. The first partition plate 331 is vertically slidably mounted within the first mounting groove 33. The outer end of the first partition plate 331 extends into the interior of the stacking cavity 32. A first spring 332 is fixedly connected between the bottom surface of the first partition plate 331 and the inner wall of the first mounting groove 33.

[0071] The second mounting groove 34 and the third mounting groove 35 are both vertically slidably installed with a slide 6, and a "T"-shaped second partition plate 61 is slidably installed inside the slide 6, and a second spring 62 is fixedly connected between the second partition plate 61 and the inner wall of the slide 6, and the movable end of the second partition plate 61 slides through a side plate of the slide 6, and the second partition plate 61 is provided with a through groove 63. The tops of the multiple slides 6 arranged inside the third mounting groove 35 are fixedly connected to the connecting rod 65, and the top ends of the connecting rod 65 slide through the upper side wall of the second mounting groove 34 and are fixedly connected to a wedge block 651. The wedge blocks 651 all extend to the inside of the through groove 63 provided on the adjacent second partition plate 61, and the side surface of the through groove 63 close to the slide 6 is set in an arc shape, and the wedge surface of the wedge block 651 presses against the arc surface of the through groove 63;

[0072] A plurality of fans 8 are evenly embedded in the inner side wall of the stacking cavity 32 , and an electric heating block 66 is fixedly installed at the bottom of the movable end of the second partition plate 61 .

[0073] When the first partition plate 331 is pressed down by the packaging box 9, the connecting rod 65 fixedly connected to the top of the first partition plate 331 will drive the wedge block 651 to move downward, so that the wedge block 651 is disengaged from the through slot 63 set in the second partition plate 61. Without the pressure of the wedge block 651, the second partition plate 61 will move outward under the elastic action of the second spring 62, so that the movable end of the second partition plate 61 extends out of the third mounting slot 35 and extends a short distance into the interior of the stacking cavity 32. When the next packaging box 9 falls into the stacking cavity 32, When the packing box 9 is inside, the roller 42 will drive the packing box 9 to move down and finally fall on the top of the extended set of second partition plates 61, and drive the second partition plates 61 to communicate with the corresponding slides 6 to overcome the elasticity of the third spring 64 and move down. Due to the obstruction of the second partition plates 61, the packing box 9 can be prevented from contacting the top surface of the first packing box 9, preventing the ink from being adhered or rubbed off. This device can automatically stack the packing boxes 9 while protecting the printed ink, making it easier to transport the packing boxes 9 to the next process site, saving time and effort.

[0074] When the slide 6 moves downward, it drives the corresponding wedge block 651 to separate from the second adjacent partition plate 61 above. Therefore, the second partition plate 61 above extends out according to the same principle to facilitate receiving the next packaging box 9. By providing multiple second installation slots 34 and corresponding slides 6 and second partition plates 61, multiple packaging boxes 9 can be stacked at one time. Since the heights of the first installation slot 33, multiple second installation slots 34 and third installation slots 35 decrease from bottom to top, each time the slide 6 is pressed downward by the packaging box 9, the wedge block 651 below will not re-enter the interior of the through slot 63, but there will still be a small distance. By providing the second partition plate 61 to receive the packaging box 9, the squeezing of the packaging box 9 below during the stacking process can also be reduced.

[0075] In addition, by embedding fans 8 on both sides of the stacking cavity 32, when the fans 8 are started, on the one hand, they assist in drying the ink when the packaging box 9 enters the interior of the stacking cavity 32, and the symmetrical fans 8 give the packaging box 9 the same blowing force, which can also make the packaging box 9 be in the center, making its stacking more upright. The bottom of the protruding end of the second partition plate 61 is also embedded with an electric heating block 66. The heat generated by the electric heating block 66 is blown to the ink printed on the packaging box 9 through the fan 8, thereby further accelerating the drying speed of the ink.

[0076] Third embodiment

[0077] A control button 351 electrically connected to the first motor 21 is fixedly disposed inside the third mounting slot 35 , and the control button 351 is located directly below the corresponding slide 6 ;

[0078] An L-shaped accommodating cavity 7 is provided on the same side of the partition 31 as the installation cavity 4. The accommodating cavity 7 is communicated with the stacking cavity 32. A movable plate 71 is slidably installed on the bottom side wall of the stacking cavity 32. The inner end of the movable plate 71 is movably extended to the interior of the accommodating cavity 7 and is fixedly connected to a limiting plate 72. A plurality of suction cups 75 are evenly fixed on the side of the limiting plate 72 close to the stacking cavity 32.

[0079] Preferably, a slide groove 74 is provided on the bottom side wall of the stacking cavity 32, and the slide groove 74 is set to an arc shape with a deep inside and a shallow outside. A slide column 73 is fixedly provided on the bottom of the movable plate 71 and is slidably installed inside the slide groove 74. The movable plate 71 is slidably installed on the bottom side wall of the stacking cavity 32 through the slide column 73.

[0080] During operation, when the second partition plate 61 and the second partition plate 61 provided inside the third mounting groove 35 are also pressed down by the packaging box 9, the stacking chamber 32 can no longer stack the packaging box 9. When the slide 6 moves downward, it squeezes the control button 351, and the control button 351 starts and controls the steering of the first motor 21, so that the linear slide 2 drives the transfer box 3 to move to one side at a uniform speed to the maximum distance. At this time, the other empty stacking chamber 32 is just located directly below the exit of the conveyor belt 12, which facilitates the continuous stacking of the packaging boxes 9 by the device, thereby improving the overall efficiency of the printing process.

[0081] When the stacking chamber 32 is fully stacked with packaging boxes 9, the gear 54 installed on one side thereof moves close to and contacts the toothed plate 22 installed on the top edge of the linear slide 2. When the gear 54 moves relative to the toothed plate 22, it drives the mounting shaft 51 to overcome the elasticity of the coil spring and rotate 180 degrees relative to the mounting plate 5. The mounting shaft 51 drives the door body 52 to rotate together, thereby exposing the packaging boxes 9 inside the stacking chamber 32, making it easier for the staff to transfer the stacked packaging boxes 9 in time.

[0082] When the lifting block 71 is lifted up, the first detent 331 and the packaging box 9 on the top of the first detent 331 are lifted up, and the wedge block 651 connected to the top of the first detent 331 is reinserted into the through slot 63 of the second detent 61 above. Since the wedge block 651 is set as a wedge shape with a thin top and a thick bottom, and the inner side of the through slot 63 is set as a convex arc, and the second detent 61 is subjected to the downward pressure of the packaging box 9, the wedge block 651 is squeezed into the inside of the through slot 63, which overcomes the elasticity of the second spring 62 and the friction force of the packaging box 9 on the second detent 61, and pushes the second detent 61 into the inside of the slide cylinder 6, so that the movable end of the second detent 61 re-enters the second mounting slot After the second partition plate 61 is moved up, although it is separated from the wedge block 651 pressing it, the second partition plate 61 is pressed by the side of the packaging box 9 and cannot be re-extended.

[0083] After the load plate 71 is in the state of being lifted up, the support frame 71 is in the state of being lifted up, and the support frame 71 is in the state of being lifted up, so that the support frame 71 can be lifted up and the support frame 71 is in the state of being lifted up.

[0084] A method for using an automated packaging carton printing device, the method comprising the following steps:

[0085] S1. Preparatory work: Drive the linear slide 2 to move the transfer box 3 horizontally so that any stacking cavity 32 faces the transport outlet of the conveyor belt 12. Start the second motor 45. The second motor 45 rotates the connected rotating shaft 41 and sprocket 43. The sprocket 43 drives the other sprockets 43 to rotate synchronously through the chain 44. The corresponding multiple rotating shafts 41 rotate accordingly and drive the sleeved rollers 42 to rotate synchronously downward;

[0086] S2. Printing and discharging: The packaging box 9 is placed at the entrance of the conveyor belt 12. The printing device 11 prints the production date and other ink text on the top of the packaging box 9. The printed packaging box 9 falls from the exit of the conveyor belt 12 into the stacking cavity 32 below. The downwardly rotating roller 42 cooperates with the roller 53 to drive the packaging box 9 downward until the packaging box 9 falls on the top of the first partition plate 331 and compresses the first partition plate 331 downward to the maximum distance.

[0087] S3, non-contact stacking of packaging boxes 9, when the first partition plate 331 is pressed down by the packaging box 9, the wedge-shaped block 651 connected to the top thereof moves down and disengages from the through slot 63 provided on the second partition plate 61. The second partition plate 61 then moves outward under the elastic action of the second spring 62 and extends a short distance into the interior of the stacking cavity 32. When the next packaging box 9 falls into the stacking cavity 32, it will only fall on the top of the protruding second partition plate 61. The second partition plate 61 is then pressed down, and the same principle is used to cause the other second partition plate 61 above it to extend. The obstruction of the second partition plate 61 can achieve the purpose of non-contact stacking of packaging boxes 9;

[0088] S4. Drying the ink. Fans 8 are embedded on both sides of the stacking chamber 32. The fans 8 help dry the ink when the packaging box 9 enters the stacking chamber 32. An electric heating block 66 is also embedded at the bottom of the extended end of the second partition plate 61. The heat generated by the electric heating block 66 is blown to the ink printed on the packaging box 9 through the fans 8, thereby further accelerating the drying speed of the ink.

[0089] S5. Replace the stacking chamber 32. When the second partition plate 61 and the second partition plate 61 provided inside the third installation groove 35 are also pressed down by the packaging box 9, the stacking chamber 32 can no longer stack the packaging box 9. When the slide 6 moves downward, it presses the control button 351. The control button 351 starts and controls the first motor 21 to drive the linear slide 2 to drive the transfer box 3 to move to one side at a uniform speed to the maximum distance. At this time, the other empty stacking chamber 32 is just below the exit of the conveyor belt 12, which facilitates the continuous stacking of packaging boxes 9 by the device.

[0090] S6. The door 52 is opened. When the transfer box 3 moves, the gear 54 installed on one side thereof moves closer to and contacts the toothed plate 22. When the gear 54 moves relative to the toothed plate 22, it drives the mounting shaft 51 to overcome the elasticity of the coil spring and rotate 180 degrees. The mounting shaft 51 drives the door 52 to rotate together, thereby exposing the packaging boxes 9 inside the stacking cavity 32, making it easier for the staff to transfer the stacked packaging boxes 9 in time.

[0091] When the first and second partition plates 331 are lifted, the wedge-shaped block 651 connected to the top of the first partition plate 331 will be reinserted into the through slot 63 of the second partition plate 61 above, thereby pushing the second partition plate 61 into the slide cylinder 6, and the packaging box 9 will then fall on the top of the first packaging box 9, and the slide cylinder 6 will drive the wedge-shaped block 651 to move upward under the elastic force of the third spring 64. By the same principle, the second partition plates 61 above will all retract, and the packaging boxes 9 placed on top of them will fall one by one and all be stacked together.

[0092] S8, transfer the packaging box 9, continue to pull out the movable plate 71, the movable plate 71 starts to slide horizontally, and the limiting plate 72 connected to the top of the movable plate 71 starts to contact the packaging box 9. Since the limiting plate 72 is provided with a notch, the limiting plate 72 can pass through the first partition plate 331 and bring out all the packaging boxes 9. The suction cup 75 provided on the surface of the limiting plate 72 can adsorb and fix the packaging box 9, thereby ensuring that the staff can smoothly pull out several packaging boxes 9 without affecting the stacking of the packaging boxes 9. The staff only needs to move the stacked packaging boxes 9 to the trolley to transport them to the next location.

[0093] Working principle: the linear slide 2 is set on one side of the printing table 1, and the first motor 21 is started to drive the linear slide 2 to move the transfer box 3 horizontally, so that any stacking cavity 32 is facing the transport outlet of the conveyor belt 12, and the second motor 45 is started. The second motor 45 will drive the connected rotating shaft 41, and the corresponding sprocket 43 will rotate accordingly. The sprocket 43 drives other sprockets 43 to rotate synchronously together through the chain 44, and the corresponding multiple rotating shafts 41 rotate accordingly, so that the rollers 42 connected to the outside of the multiple rotating shafts 41 rotate downward synchronously, and then the packaging box 9 to be printed is placed on the inlet end of the conveyor belt 12. The conveyor belt 12 drives the packaging box 9 to the printing place of the printing equipment 11, and the printing equipment 11 presses the top of the packaging box 9 The production date and other text are printed in ink. The printed packaging box 9 will fall from the outlet of the conveyor belt 12 into the stacking cavity 32 below. The downward rotating roller 42 cooperates with the rolling roller 53 to drive the packaging box 9 to move downward until the packaging box 9 falls on the top of the two first partition plates 331. The weight of the carton and the products inside will overcome the elasticity of the first spring 332, thereby compressing the first partition plate 331 downward until the first partition plate 331 moves down to the maximum distance. By setting the roller 42 and the roller 53 that fit the size of the packaging box 9, the packaging box 9 is moved down to the bottom of the stacking cavity 32 through the rotation of the roller 42, thereby reducing the impact force generated by the free fall of the packaging box 9 and preventing damage to the surface of the packaging box 9.

[0094] When the first partition plate 331 is pressed down by the packaging box 9, the connecting rod 65 fixedly connected to the top of the first partition plate 331 will drive the wedge block 651 to move downward, so that the wedge block 651 is separated from the through slot 63 provided in the second partition plate 61. Without the pressure of the wedge block 651, the second partition plate 61 will move outward under the elastic action of the second spring 62, so that the movable end of the second partition plate 61 extends out of the third mounting slot 35 and extends a short distance into the interior of the stacking cavity 32. When the next packaging box 9 falls into the interior of the stacking cavity 32, When the packing box 9 is moved down, the roller 42 will drive the packing box 9 to move down and finally fall on the top of the extended set of second partition plates 61, and drive the second partition plates 61 to communicate with the corresponding slides 6 to overcome the elasticity of the third spring 64 and move down. Due to the obstruction of the second partition plates 61, the packing box 9 can be prevented from contacting the top surface of the first packing box 9, preventing the ink from being adhered or rubbed off. This device can automatically stack the packing boxes 9 while protecting the printed ink, making it easier to transport the packing boxes 9 to the next process site, saving time and effort.

[0095] When the slide 6 moves downward, it drives the corresponding wedge block 651 to separate from the second adjacent partition plate 61 above. Therefore, the second partition plate 61 above extends out according to the same principle to facilitate receiving the next packaging box 9. By providing multiple second installation slots 34 and corresponding slides 6 and second partition plates 61, multiple packaging boxes 9 can be stacked at one time. Since the heights of the first installation slot 33, multiple second installation slots 34 and third installation slots 35 decrease from bottom to top, each time the slide 6 is pressed downward by the packaging box 9, the wedge block 651 below will not re-enter the interior of the through slot 63, but there will still be a small distance. By providing the second partition plate 61 to receive the packaging box 9, the squeezing of the packaging box 9 below during the stacking process can also be reduced.

[0096] In addition, fans 8 are embedded and installed on both sides of the stacking cavity 32. When the fans 8 are turned on, they help dry the ink when the packaging boxes 9 enter the stacking cavity 32. The symmetrical fans 8 give the packaging boxes 9 the same blowing force, which can also keep the packaging boxes 9 in the center, making them stacked more upright. The bottom of the protruding end of the second partition plate 61 is also embedded with an electric heating block 66. The heat generated by the electric heating block 66 is blown to the ink printed on the packaging boxes 9 through the fans 8, thereby further accelerating the drying speed of the ink.

[0097] When the second partition plate 61 and the second partition plate 61 provided in the third installation groove 35 are also pressed down by the packaging box 9, the stacking cavity 32 can no longer stack the packaging box 9. When the slide 6 moves downward, it squeezes the control button 351. The control button 351 starts and controls the steering of the first motor 21, so that the linear slide 2 drives the transfer box 3 to move to one side at a uniform speed to the maximum distance. At this time, the other empty stacking cavity 32 is just located directly below the exit of the conveyor belt 12, which facilitates the continuous stacking of the packaging boxes 9 by the device, thereby improving the overall efficiency of the printing process.

[0098] When the stacking chamber 32 is fully stacked with packaging boxes 9, the gear 54 installed on one side thereof moves close to and contacts the toothed plate 22 installed on the top edge of the linear slide 2. When the gear 54 moves relative to the toothed plate 22, it drives the mounting shaft 51 to overcome the elasticity of the coil spring and rotate 180 degrees relative to the mounting plate 5. The mounting shaft 51 drives the door body 52 to rotate together, thereby exposing the packaging boxes 9 inside the stacking chamber 32, making it easier for the staff to transfer the stacked packaging boxes 9 in time.

[0099] When the lifting block 71 is lifted up, the first detent 331 and the packaging box 9 on the top of the first detent 331 are lifted up, and the wedge block 651 connected to the top of the first detent 331 is reinserted into the through slot 63 of the second detent 61 above. Since the wedge block 651 is set as a wedge shape with a thin top and a thick bottom, and the inner side of the through slot 63 is set as a convex arc, and the second detent 61 is subjected to the downward pressure of the packaging box 9, the wedge block 651 is squeezed into the inside of the through slot 63, which overcomes the elasticity of the second spring 62 and the friction force of the packaging box 9 on the second detent 61, and pushes the second detent 61 into the inside of the slide cylinder 6, so that the movable end of the second detent 61 re-enters the second mounting slot After the second partition plate 61 is moved up, although it is separated from the wedge block 651 pressing it, the second partition plate 61 is pressed by the side of the packaging box 9 and cannot be re-extended.

[0100] After the lifting of the locking plate 72, the locking plate 730 is unlocked, and the locking plate 730 is unlocked, so that the locking plate 730 can be unlocked, and the locking plate 730 can be unlocked, so that the locking plate 730 can be unlocked.

[0101] After the packaging box 9 is pulled out, the first partition plate 331 will no longer be pressed by the packaging box 9, and will drive the wedge block 651 to move up to its original position under the elastic action of the first spring 332, and the wedge block 651 will be squeezed into the interior of the through groove 63 again, and the second partition plate 61 adjacent above it will retract into the interior of the second mounting groove 34. After the staff moves the stacked packaging boxes 9 to the trolley, they only need to push the movable plate 71 back into the interior of the stacking cavity 32 until the other stacking cavity 32 is also full. The linear slide 2 will drive the transfer box 3 to move in the opposite direction to the maximum distance. At this time, the door body 52 set on one side of the stacking cavity 32 that has just been unloaded will be closed under the action of the coil spring after it moves away from the tooth plate 22, so as to continue to stack the printed packaging boxes 9, and the stacking cavity 32 full of packaging boxes 9 will be unloaded according to the same principle.

[0102] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automated packaging carton printing device, comprising a printing table (1) and a packaging box (9), wherein a printing device (11) and a matching conveyor belt (12) are fixedly mounted on the top surface of the printing table (1), characterized in that: Also includes: A discharge assembly for assisting in stacking cartons, the discharge assembly being fixedly mounted on a side of the printing table (1) close to the discharge of the printing device (11); The unloading assembly includes a linear slide (2) and a chain (44), the linear slide (2) is fixedly mounted on one side of the printing table (1), a first motor (21) for driving the linear slide (2) is fixedly mounted on one side of the linear slide (2), a transmission box (3) is fixedly mounted on the top of the moving end of the linear slide (2), the top of the transmission box (3) is configured to be hollow, a partition (31) is fixedly mounted inside the transmission box (3), and the internal cavity of the transmission box (3) is evenly divided into two stacking cavities (32) by the partition (31); An anti-ink sticking component, used to prevent the printed surface of the carton from sticking and to assist in drying the printed surface, is fixedly arranged on two side walls adjacent to the two stacking cavities (32) and the partition (31); The partition (31) is symmetrically provided with two installation cavities (4), and the two installation cavities (4) are respectively communicated with the two stacking cavities (32). A group of rotating shafts (41) are equidistantly connected to the inner walls of both sides of each installation cavity (4). The number of the rotating shafts (41) in each group is multiple, and the outer side of the rotating shaft (41) is fixedly sleeved with a roller (42) for assisting in stacking cartons. One end of each group of the rotating shafts (41) rotates through a side wall of the installation cavity (4) and is fixedly sleeved with a sprocket (43). The sprockets (43) in the same group are connected by a chain (44). The outer side end of one of the rotating shafts (41) in each group is fixedly connected to a second motor (45), and the second motor (45) is fixedly installed on the outside of the transmission box (3); The anti-sticking ink component includes a first partition plate (331), and two side walls of the stacking cavity (32) adjacent to the partition plate (31) are provided with a third mounting groove (35), a plurality of second mounting grooves (34), and a first mounting groove (33) in sequence from top to bottom. The first partition plate (331) is vertically slidably mounted inside the first mounting groove (33), and the outer end of the first partition plate (331) extends into the interior of the stacking cavity (32). A first spring (332) is fixedly connected between the bottom surface of the first partition plate (331) and the inner wall of the first mounting groove (33); A slide (6) is vertically slidably installed inside the second mounting groove (34) and the third mounting groove (35), and a "T"-shaped second partition plate (61) is slidably installed inside the slide (6). A second spring (62) is fixedly connected between the second partition plate (61) and the inner wall of the slide (6). The movable end of the second partition plate (61) slides through a side plate of the slide (6). The second partition plate (61) is provided with a through groove (63) and is provided in the third mounting groove (35). The tops of the plurality of slides (6) inside are all fixedly connected with connecting rods (65), the top ends of the connecting rods (65) slide through the upper side wall of the second mounting groove (34) and are fixedly connected with wedge blocks (651), the wedge blocks (651) all extend to the inside of the through grooves (63) provided in the adjacent second partition plate (61), the through grooves (63) are arranged in an arc shape on one side close to the slide (6), and the wedge surface of the wedge block (651) is pressed against the arc surface of the through groove (63).

2. The automatic packaging carton printing device according to claim 1, characterized in that: A side of the stacking cavity (32) away from the partition (31) is set as a hollow structure, and two groups of mounting plates (5) are fixedly installed on the outer side of the stacking cavity (32) close to the hollow surface, and each group of the mounting plates (5) is rotatably connected to a mounting shaft (51) through a coil spring, and the outer side of the mounting shaft (51) is fixedly sleeved with a door body (52) for blocking the carton, and the inner side of each door body (52) is rollingly installed with a roller (53) of the same size as the roller (42).

3. The automatic packaging carton printing device according to claim 2, characterized in that: The bottom end of the mounting shaft (51) rotates through the corresponding mounting plate (5) and is fixedly sleeved with a gear (54). Four toothed plates (22) adapted to the gears (54) are fixedly mounted on the top of the linear slide (2).

4. The automatic packaging carton printing device according to claim 3, characterized in that: A plurality of fans (8) are evenly embedded in the inner side wall of the stacking cavity (32), and an electric heating block (66) is fixedly provided at the bottom of the movable end of the second partition plate (61).

5. The automatic packaging carton printing device according to claim 4, characterized in that: A control button (351) electrically connected to the first motor (21) is fixedly provided inside the third mounting slot (35), and the control button (351) is located directly below the corresponding slide cylinder (6).

6. The automatic packaging carton printing device according to claim 5, characterized in that: An "L"-shaped accommodating cavity (7) is provided on the same side of the partition (31) as the mounting cavity (4), and the accommodating cavity (7) is communicated with the stacking cavity (32). A movable plate (71) is slidably mounted on the bottom side wall of the stacking cavity (32), and the inner side end of the movable plate (71) movably extends into the interior of the accommodating cavity (7) and is fixedly connected to a limiting plate (72). A plurality of suction cups (75) are evenly fixedly arranged on a side of the limiting plate (72) close to the stacking cavity (32).

7. The automatic packaging carton printing device according to claim 6, characterized in that: The bottom side wall of the stacking cavity (32) is provided with a slide groove (74), and the slide groove (74) is arranged in an arc shape with a deep inner side and a shallow outer side. The bottom of the movable plate (71) is fixedly provided with a slide column (73) slidably mounted inside the slide groove (74). The movable plate (71) is slidably mounted on the bottom side wall of the stacking cavity (32) through the slide column (73).

8. A method for using an automated packaging carton printing device, applied to the automated packaging carton printing device according to claim 7, characterized in that: The method for using the automated packaging carton printing device comprises the following steps: S1, preparatory work, driving the linear slide (2) to horizontally move the transfer box (3), so that any stacking cavity (32) is facing the transport outlet of the conveyor belt (12), starting the second motor (45), the second motor (45) drives the connected rotating shaft (41) and the sprocket (43), the sprocket (43) drives the other sprockets (43) to rotate synchronously through the chain (44), and the corresponding multiple rotating shafts (41) rotate accordingly and drive the sleeved rollers (42) to rotate synchronously downward; S2, printing and discharging, placing the packaging box (9) at the entrance end of the conveyor belt (12), and the printing device (11) prints the production date ink on the top of the packaging box (9). The printed packaging box (9) will fall from the outlet of the conveyor belt (12) into the stacking cavity (32) below. The downward rotating roller (42) cooperates with the roller (53) to drive the packaging box (9) to move downward until the packaging box (9) falls on the top of the first partition plate (331) and compresses the first partition plate (331) downward to the maximum distance; S3, non-contact stacking of packaging boxes (9), when the first partition plate (331) is pressed down by the packaging box (9), the wedge-shaped block (651) connected to the top thereof moves down and disengages from the through slot (63) provided on the second partition plate (61), and the second partition plate (61) then moves outward under the elastic action of the second spring (62) and extends a short distance to the inside of the stacking cavity (32), and when the next packaging box (9) falls into the stacking cavity (32), it will only fall on the top of the extended second partition plate (61), and the second partition plate (61) is then pressed down, and the same principle is used to extend the other second partition plate (61) above it, and the blocking of the second partition plate (61) can achieve the purpose of non-contact stacking of packaging boxes (9); S4, drying the ink. Fans (8) are embedded on both sides of the stacking chamber (32). The fans (8) assist in drying the ink when the packaging box (9) enters the stacking chamber (32). An electric heating block (66) is also embedded at the bottom of the extended end of the second partition plate (61). The heat generated by the electric heating block (66) is blown toward the ink printed on the packaging box (9) through the fans (8), thereby further accelerating the drying speed of the ink. S5, replace the stacking chamber (32). When the second partition plate (61) provided inside the third mounting groove (35) is also pressed down by the packaging box (9), the stacking chamber (32) can no longer stack the packaging box (9). When the slide cylinder (6) moves downward, it squeezes the control button (351). The control button (351) starts and controls the first motor (21) to drive the linear slide (2) to drive the transmission box (3) to move to one side at a uniform speed to the maximum distance. At this time, the other empty stacking chamber (32) is located just below the exit of the conveyor belt (12), which facilitates the continuous stacking of packaging boxes (9) by the device. S6, the door body (52) is opened, and when the transfer box (3) moves, the gear (54) installed on one side thereof moves closer to and contacts the tooth plate (22), and when the gear (54) moves relative to the tooth plate (22), it drives the mounting shaft (51) to overcome the elasticity of the coil spring and rotate 180 degrees, and the mounting shaft (51) drives the door body (52) to rotate together, thereby exposing the packaging box (9) inside the stacking cavity (32), making it easier for the staff to transfer the stacked packaging box (9) in time; S7, pull the movable plate (71), pull the movable plate (71) outward at a uniform speed, when the slide column (73) slides along the arc surface set by the slide groove (74), the movable plate (71) will rise and lift the first partition plate (331), and the wedge block (651) connected to the top of the first partition plate (331) will be reinserted into the through groove (63) of the upper adjacent second partition plate (61), thereby pushing the second partition plate (61) into the slide cylinder (6), and the packaging box (9) will then fall on the top of the first packaging box (9), and the above-mentioned slide cylinder (6) will drive the wedge block (651) to move upward under the elastic force of the third spring (64). With the same principle, the upper several second partition plates (61) will all retract, and the packaging boxes (9) placed on top of them will fall one by one and all be stacked together; S8, transfer the packaging box (9), continue to pull out the movable plate (71), the movable plate (71) starts to slide horizontally, and the limiting plate (72) connected to the top of the movable plate (71) starts to contact the packaging box (9). Since the limiting plate (72) is provided with a notch, the limiting plate (72) can pass through the first partition plate (331) and take out all the packaging boxes (9). The suction cup (75) provided on the surface of the limiting plate (72) can adsorb and fix the packaging box (9), thereby ensuring that the staff can smoothly pull out several packaging boxes (9) without affecting the stacking of the packaging boxes (9). The staff only needs to move the stacked packaging boxes (9) to the trolley to transport them to the next location.

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