Packing assembly line system and using method thereof

Abstract

The invention relates to the field of packaging equipment, in particular to a packaging assembly line system and a using method thereof.By constructing a multi-module parallel layout and collaborative operation mechanism, procedures such as labeling, stacking, pallet unstacking, temporary storage, stacking and transferring are split to independent stations capable of running synchronously; the problem that an existing packaging assembly line lacks multi-station waiting and matching capacity is solved, packaging neutral positions in procedure connection are eliminated, the continuity and the overall efficiency of packaging operation are improved, automatic efficient operation and manual assistance requirements in special scenes are considered, and the production efficiency is improved. The flexible material supplementing requirement is met by arranging the pallet manual feeding module and the manual feeding conveying assembly, meanwhile, by means of the design of a continuous conveying channel, a precise positioning structure and a backflow channel, precise butt joint and stacking precision among all procedures are guaranteed, cyclic utilization of resources such as empty pallets is achieved, the manual intervention cost is effectively reduced, and the working efficiency is improved. And the application range is wider.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment, and more specifically to a packaging assembly line system and its usage method. Background Technology

[0002] In logistics, transportation, and manufacturing, packaging lines are core equipment for achieving efficient operations, and their operational efficiency directly impacts overall production capacity. However, existing packaging lines often employ a single, sequential design for each process module, lacking the ability for multi-station collaboration and coordination. Labeling, palletizing, pallet unstacking, stacking, and transfer must be performed sequentially in a fixed order. When one process is not completed, the next station remains idle, resulting in significant operational gaps during packaging. This not only reduces overall packaging efficiency but also increases the frequency of manual intervention, failing to meet the demands of large-scale, continuous production. Therefore, a packaging line system capable of multi-station collaboration and eliminating operational gaps is urgently needed to address these issues. This paper proposes a packaging line system and its usage method. Summary of the Invention

[0003] In order to solve the technical problems existing in the prior art, the present invention provides a packaging assembly line system and its usage method.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a packaging assembly line system, comprising a labeling module, a palletizing module, a first pallet transfer module, a pallet temporary storage module, a pallet manual delivery module, a first pallet conveying module, a first unstacking module, a second pallet transfer module, a second unstacking module, a third pallet transfer module, a second pallet conveying module, and a fourth pallet transfer module;

[0005] The labeling module is set in a designated area of ​​the site; the palletizing module is set parallel to one side of the labeling module;

[0006] Several groups of the first pallet transfer modules are arranged side by side on one side of the palletizing module; the pallet temporary storage module is located at the side of the first pallet transfer module on one side.

[0007] The pallet manual delivery module is located on the side of the first pallet transfer module on the other side; the first pallet conveying module is arranged parallel to one side of the first pallet transfer module, the pallet temporary storage module and the pallet manual delivery module arranged side by side;

[0008] The first unstack module and the second pallet transfer module are combined to form a temporary storage module, and several of the temporary storage modules are arranged side by side in the middle of one side of the first pallet transport module.

[0009] The second unstack module and the third stack transfer module are combined to form an unstack transmission module, which is arranged side by side with the temporary storage module;

[0010] The second pallet conveying module is installed on one side of the temporary storage module;

[0011] Several sets of the fourth pallet transfer modules are arranged longitudinally to form a return channel, which is set up side by side with the temporary storage module.

[0012] Preferably, the labeling module includes a labeling module frame. Several labeling machines are installed side-by-side on one side of the inner side of the labeling module frame. A multi-axis labeling robotic arm is positioned above the labeling machines. The multi-axis labeling robotic arm is used to grasp the labels printed by the labeling machines. A feeding conveyor belt and a packaging box transfer conveyor assembly are installed in parallel below the multi-axis labeling robotic arm. The feeding conveyor belt is connected to the packaging box transfer conveyor assembly and is used to receive packaging boxes conveyed by external unpacking equipment. The packaging box transfer conveyor assembly has two ends respectively... As a receiving and transfer position, one side of the receiving position of the packaging box transfer and conveying component is parallel to the feeding conveyor belt. The other side of the interior of the labeling module frame is provided with two sets of packaging box transfer temporary storage components. The two sets of packaging box transfer temporary storage components are respectively located on both sides of the transfer position of the packaging box transfer and conveying component. The packaging box transfer temporary storage components are used to receive the packaging boxes transferred by the packaging box transfer and conveying component. On the other side of the receiving position of the packaging box transfer and conveying component, a manual feeding conveying component is provided. The manual feeding conveying component is used for manually feeding the transfer of packaging boxes.

[0013] Preferably, the palletizing module includes a palletizing guide rail, which is disposed on one side of the packaging box conveying and storage component. A palletizing platform is mounted on the top of the palletizing guide rail. The palletizing platform is used to move laterally along the palletizing guide rail. A multi-axis palletizing robot is mounted on the top of the palletizing platform. A gripping component is mounted on the end of the working axis of the multi-axis palletizing robot. The multi-axis palletizing robot is used to cooperate with the gripping component to grip the packaging boxes temporarily stored on the packaging box conveying and storage component.

[0014] Preferably, each group of the first pallet transfer modules includes a group of first transfer roller conveyor bases, and several groups of first transfer roller conveyor bases are arranged in parallel on one side of the palletizing module. Each group of first transfer roller conveyor bases has a group of first roller transfer conveyors installed on its top, and each group of first roller transfer conveyors has a group of running baffles installed at its end.

[0015] Preferably, the pallet temporary storage module includes a pallet temporary storage roller conveyor base, which is located on the side of a first transfer roller conveyor base. A pallet temporary storage roller conveyor is installed on the top of the pallet temporary storage roller conveyor base. A height adjustment frame is installed on one side of the pallet temporary storage roller conveyor base. A height adjustment cylinder is installed on the top of one side of the height adjustment frame. A movable frame is installed in the middle of one side of the height adjustment frame via a vertical slide rail. The top of the movable frame is connected to the movable part of the height adjustment cylinder. Two sets of width adjustment cylinders in opposite directions are installed at the middle position of the surface of the movable frame. A set of pallet clamping plates is installed on both sides of the surface of the movable frame via a horizontal slide rail. The two sets of pallet clamping plates are respectively connected to the movable parts of the two sets of height adjustment frames.

[0016] Preferably, the pallet manual delivery module includes a delivery module frame, which is installed on the side of the base of the first transfer roller conveyor on the other side. A manual delivery roller conveyor is provided inside the delivery module frame, and a manual delivery roller conveyor lifting module is installed on the top of the delivery module frame. The traction end of the manual delivery roller conveyor lifting module is connected to the manual delivery roller conveyor, and the manual delivery roller conveyor is tractioned by the manual delivery roller conveyor lifting module.

[0017] Preferably, the first pallet conveying module includes a first conveying guide rail, which is arranged parallel to one side of the first pallet transfer module, the pallet temporary storage module, and the pallet manual delivery module. The length of the first conveying guide rail is consistent with the width of the first pallet transfer module, the pallet temporary storage module, and the pallet manual delivery module. A first conveying slide is installed on the top of the first conveying guide rail, and a first pallet conveying roller conveyor is installed on the top of the first conveying slide. The working area of ​​the first pallet conveying roller conveyor covers the first pallet transfer module, the pallet temporary storage module, and the pallet manual delivery module.

[0018] Preferably, the first unstacking module includes a first unstacking platform, a first unstacking roller conveyor mounted on the top of the first unstacking platform, a first screw aligning mechanism mounted at the middle of the interior of the first unstacking platform, and a set of first screw lifting mechanisms mounted on the top of each of the two movable parts of the first screw aligning mechanism. The two sets of first screw lifting mechanisms work in conjunction with the first screw aligning mechanism to clamp and lift the pallet. The second pallet transfer module includes a second transfer roller conveyor base, which is located at the end of the first unstacking platform. The second transfer roller conveyor is mounted on the top of the second transfer roller conveyor base, and the second transfer roller conveyor is flush with the second unstacking roller conveyor, forming a continuous transmission channel. The second unstacking module includes a first... The second unpacking platform is aligned with the pallet temporary storage roller conveyor base. A second unpacking roller conveyor is installed on the top of the second unpacking platform. A second lead screw aligning mechanism is installed in the middle of the interior of the second unpacking platform. A set of second lead screw lifting mechanisms is installed at the top of each of the two movable parts of the second lead screw aligning mechanism. The third pallet transfer module includes a third transfer roller conveyor base and a third transfer roller conveyor. The third transfer roller conveyor base is installed at the end of the second unpacking platform. The third transfer roller conveyor base is aligned with the first pallet conveying roller conveyor. A third transfer roller conveyor is installed at the top of the third transfer roller conveyor base. The third transfer roller conveyor, the first pallet conveying roller conveyor, and the pallet temporary storage roller conveyor form a continuous transmission channel.

[0019] Preferably, the second pallet conveying module includes a second conveying guide rail, a second conveying slide is mounted on the top of the second conveying guide rail, and a second pallet conveying roller conveyor is mounted on the top of the second conveying slide; the fourth pallet transfer module includes a fourth transfer roller conveyor base, the fourth transfer roller conveyor base is aligned with the delivery module frame, and a fourth transfer roller conveyor is mounted on the top of the fourth transfer roller conveyor base; the second pallet conveying roller conveyor is aligned with the second transfer roller conveyor, the second unstacking roller conveyor, and the second conveying slide, and the working area of ​​the second pallet conveying roller conveyor covers the second transfer roller conveyor, the second unstacking roller conveyor, and the second conveying slide.

[0020] A method for using a packaging assembly line system includes the following steps:

[0021] Step S1: When the externally formed packaging box is transferred to the top of the feeding conveyor belt, the labeling machine generates a label according to the production information, and the multi-axis labeling robot arm grabs the printed label and affixes the label to the surface of the packaging box.

[0022] In step S21, the discharge port of the external warehouse transfers the stacked mother and daughter pallets to the top of the second pallet conveyor roller conveyor. The second conveyor slide drives the second pallet conveyor roller conveyor and the mother and daughter pallets on the second pallet conveyor roller conveyor to move along the second conveyor guide rail. When the second pallet conveyor roller conveyor moves in front of the second unstacking roller conveyor and aligns with the second unstacking roller conveyor, the second pallet conveyor roller conveyor transfers the mother and daughter pallets to the top of the second unstacking roller conveyor. The second screw aligning mechanism drives two sets of second screw lifting machines to move in opposite directions. During the opposite movement, the second screw lifting machines complete the clamping of the daughter pallets. After the second screw lifting machines complete the clamping of the daughter pallets, they lift the daughter pallets upward.

[0023] In step S22, the second unstacking roller conveyor transfers the mother pallet to the top of the third transfer roller conveyor, the third transfer roller conveyor transfers the mother pallet to the top of the first pallet conveying roller conveyor, the first pallet conveying roller conveyor transfers the mother pallet to the top of the pallet temporary storage roller conveyor, the height adjustment cylinder pushes the movable frame down so that the bottom of the two sets of width adjustment cylinders is aligned with the previous set of mother pallets, the pallet clamping plate pulls the two sets of width adjustment cylinders to move in opposite directions to complete the clamping and gripping of the pallet, the height adjustment cylinder pulls the movable frame up, and the width adjustment cylinder lifts the current mother pallet up by the height of one mother pallet to make room for the next set of mother pallets;

[0024] In step S23, the second screw lift lowers the sub-pallet to the top of the second unstacking roller conveyor. The second unstacking roller conveyor transfers the sub-pallet to the top of the third transfer roller conveyor. The third transfer roller conveyor transfers the sub-pallet to the top of the first pallet conveying roller conveyor. The first conveying slide moves the first pallet conveying roller conveyor and the sub-pallet on top of the first pallet conveying roller conveyor until the first pallet conveying roller conveyor is aligned with one of the first roller transfer conveyors. The first pallet conveying roller conveyor transfers the sub-pallet to the top of the first roller transfer conveyor. The multi-axis palletizing robot picks up the packaging box and stacks it on the sub-pallet.

[0025] Step S31, repeat step S21. After a new set of mother and child stacks is unstacked by the second unstack module, the mother stack continues to be sent to the stack temporary storage roller conveyor. Simultaneously, the stack clamping plate pushes two sets of width adjustment cylinders to move in opposite directions to release the clamping of the previous set of mother stacks, so that the previous set of mother stacks falls on top of the current mother stack. Repeat step S22 to complete the stacking of mother stacks.

[0026] Step S32, repeat step S23 until the top of the first roller transfer conveyor of the first pallet transfer module of all groups is equipped with a sub-pallet.

[0027] Step S41: After the sub-pallets on the first roller transfer conveyor complete the stacking of the packaging boxes, the first conveying slide moves the first pallet conveying roller conveyor to the corresponding position of the first roller transfer conveyor. The first roller transfer conveyor transfers the completed sub-pallets to the top of the first pallet conveying roller conveyor. The first pallet conveying roller conveyor then moves the completed sub-pallets to the setting position of one of the first unstacking roller conveyors. The first pallet conveying roller conveyor then moves the completed sub-pallets to the top of the first unstacking roller conveyor. The first screw aligning mechanism drives the two sets of first screw lifting mechanisms to move in opposite directions until the first screw lifting mechanism clamps the completed sub-pallets. The first screw lifting mechanism then moves the completed sub-pallets upward.

[0028] In step S42, the height adjusting cylinder moves the movable frame downward, causing the mother pallet held by the width adjusting cylinder to fall to the top of the pallet temporary storage roller conveyor. The pallet clamping plate pushes the width adjusting cylinder, causing it to release its grip on the mother pallet. The height adjusting cylinder moves the movable frame upward by the height of one set of mother pallets. The pallet clamping plate pulls the width adjusting cylinder, causing it to clamp the previous set of mother pallets. The height adjusting cylinder moves the movable frame upward, lifting the previous set of mother pallets held by the width adjusting cylinder. The first conveying... The slide table moves the first pallet conveyor roller to the position of the corresponding pallet storage roller, and the pallet storage roller transfers the mother pallet to the top of the first pallet conveyor roller. The first conveying slide table moves the first pallet conveyor roller to the corresponding position of the first unstacking roller, and the first pallet conveyor roller transfers the mother pallet to the top of the first unstacking roller. The first screw lifter lowers the stacked sub-pallet, so that the stacked sub-pallet lands on top of the mother pallet to complete the final stacking.

[0029] In step S43, the second conveyor slide moves the second pallet conveyor roller to the position corresponding to the first unstacking roller conveyor. The first unstacking roller conveyor transfers the pallet that has completed the final stacking to the top of the second pallet conveyor roller. The second conveyor slide moves the second pallet conveyor roller and the pallet that has completed the final stacking at the top of the second pallet conveyor roller to the feed inlet of the external warehouse.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. This invention solves the problem of existing packaging production lines lacking the ability to wait for coordination among multiple workstations by constructing a multi-module parallel layout and collaborative operation mechanism, which separates processes such as labeling, palletizing, pallet unstacking, temporary storage, stacking and transfer into independent and synchronously operating workstations. It also eliminates packaging gaps in process connections and improves the continuity and overall efficiency of packaging operations.

[0032] 2. This invention takes into account both automated and efficient operation and the need for manual assistance in special scenarios. By setting up a pallet manual feeding module and a manual feeding and conveying component, it meets the need for flexible material replenishment. At the same time, with the help of continuous transmission channels, precise positioning structures and return channels, it not only ensures the precise docking and stacking accuracy between each process, but also realizes the recycling of resources such as empty pallets, effectively reducing the cost of manual intervention and making it more widely applicable. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 This is a three-dimensional structural diagram of the labeling module of the present invention;

[0035] Figure 3 This is a schematic diagram of the cooperative structure of the first pallet transfer module, the pallet temporary storage module and the pallet manual delivery module of the present invention.

[0036] Figure 4 This is a three-dimensional structural diagram of the pallet temporary storage module of the present invention;

[0037] Figure 5 This is a three-dimensional structural diagram of the pallet manual delivery module of the present invention;

[0038] Figure 6 This is a three-dimensional structural diagram of the first pallet conveying module of the present invention;

[0039] Figure 7 This is a three-dimensional structural diagram of the first unstacking module and the second stack transfer module of the present invention.

[0040] Figure 8 This is a three-dimensional structural diagram of the second unstacking module and the third stack transfer module of the present invention.

[0041] Figure 9 This is a three-dimensional structural diagram of the second pallet conveying module of the present invention;

[0042] Figure 10 This is a three-dimensional structural diagram of the fourth pallet transfer module of the present invention.

[0043] The numbers in the image represent:

[0044] 1. Labeling module; 11. Labeling module frame; 12. Labeling machine; 13. Multi-axis labeling robotic arm; 14. Feeding conveyor belt; 15. Packaging box transfer and conveying assembly; 16. Packaging box conveying and temporary storage assembly; 17. Manual feeding and conveying assembly;

[0045] 2. Palletizing module; 21. Palletizing guide rail; 22. Palletizing platform; 23. Multi-axis palletizing robot;

[0046] 3. First pallet transfer module; 31. First transfer roller conveyor base; 32. First roller transfer conveyor; 33. Running baffle;

[0047] 4. Pallet temporary storage module; 41. Pallet temporary storage roller conveyor base; 42. Pallet temporary storage roller conveyor; 43. Height adjustment frame; 44. Height adjustment cylinder; 45. Movable frame; 46. Width adjustment cylinder; 47. Pallet clamping plate;

[0048] 5. Pallet manual feeding module; 51. Feeding module frame; 52. Manual feeding roller conveyor; 53. Manual feeding roller conveyor lifting module;

[0049] 6. First pallet conveying module; 61. First conveying guide rail; 62. First conveying slide; 63. First pallet conveying roller conveyor;

[0050] 7. First unstacking module; 71. First unstacking platform; 72. First unstacking roller conveyor; 73. First lead screw aligning machine; 74. First lead screw lifting machine;

[0051] 8. Second pallet transfer module; 81. Second transfer roller conveyor base; 82. Second transfer roller conveyor;

[0052] 9. Second unstacking module; 91. Second unstacking platform; 92. Second unstacking roller conveyor; 93. Second lead screw aligning mechanism; 94. Second lead screw lifting mechanism;

[0053] 10. Third pallet transfer module; 101. Third transfer roller conveyor base; 102. Third transfer roller conveyor;

[0054] 11. Second pallet conveying module; 111. Second conveying guide rail; 112. Second conveying slide; 113. Second pallet conveying roller conveyor;

[0055] 12. Fourth pallet transfer module; 121. Fourth transfer roller conveyor base; 122. Fourth transfer roller conveyor. Detailed Implementation

[0056] The present invention will be further described below with reference to the accompanying drawings and embodiments, which illustrate the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0057] Example:

[0058] like Figures 1-10As shown, the present invention provides a packaging assembly line system, including a labeling module 1, a palletizing module 2, a first pallet transfer module 3, a pallet temporary storage module 4, a pallet manual delivery module 5, a first pallet conveying module 6, a first unstacking module 7, a second pallet transfer module 8, a second unstacking module 9, a third pallet transfer module 10, a second pallet conveying module 11, and a fourth pallet transfer module 12;

[0059] The labeling module 1 is set in a designated area of ​​a set site. Its function is to print and affix labels to packaging boxes, and to receive and temporarily store packaging boxes that are input from external sources and delivered manually. The labeling module 1 includes a labeling module frame 11. Several labeling machines 12 are installed side by side on one side of the inner side of the labeling module frame 11. A multi-axis labeling robotic arm 13 is set above the labeling machines 12. The multi-axis labeling robotic arm 13 is used to pick up the labels printed by the labeling machines 12. A feeding conveyor belt 14 and a packaging box transfer conveyor assembly 15 are installed in parallel below the multi-axis labeling robotic arm 13. The feeding conveyor belt 14 is connected to the packaging box transfer conveyor assembly 15 and is used to receive externally opened packaging boxes. The packaging boxes conveyed by the box conveying equipment have two ends of the packaging box transfer and conveying component 15 as receiving positions and transfer positions, respectively. One side of the receiving position of the packaging box transfer and conveying component 15 is parallel to the feeding conveyor belt 14. The other side of the labeling module frame 11 is provided with two sets of packaging box transfer temporary storage components 16. The two sets of packaging box transfer temporary storage components 16 are located on both sides of the transfer position of the packaging box transfer and conveying component 15. The packaging box transfer temporary storage components 16 are used to receive the packaging boxes transferred by the packaging box transfer and conveying component 15. The other side of the receiving position of the packaging box transfer and conveying component 15 is provided with a manual feeding conveying component 17. The manual feeding conveying component 17 is used for manually feeding the transfer of packaging boxes.

[0060] The feeding conveyor belt 14 receives packaging boxes from external unpacking equipment, and the manual feeding conveyor component 17 can receive manually fed packaging boxes. Both convey the packaging boxes to the packaging box transfer conveyor component 15. The labeling machine 12 generates corresponding labels according to the production information. After the multi-axis labeling robotic arm 13 grabs the printed labels, it accurately pastes them on the surface of the packaging box. The labeled packaging boxes are transferred to the packaging box transfer conveyor component 15 on both sides for temporary storage, waiting for subsequent palletizing operations.

[0061] The palletizing module 2 is arranged parallel to one side of the labeling module 1 and is used to grab and stack the temporarily stored packaging boxes onto the designated pallet. The palletizing module 2 includes a palletizing guide rail 21, which is arranged on one side of the packaging box conveying and temporary storage component 16. A palletizing platform 22 is mounted on the top of the palletizing guide rail 21. The palletizing platform 22 is used to move laterally along the palletizing guide rail 21. A multi-axis palletizing robot 23 is mounted on the top of the palletizing platform 22. A gripping component 24 is mounted on the end of the working axis of the multi-axis palletizing robot 23. The multi-axis palletizing robot 23 is used to cooperate with the gripping component 24 to grab the packaging boxes temporarily stored on the packaging box conveying and temporary storage component 16.

[0062] The palletizing station 22 can move laterally along the palletizing guide rail 21 to adjust the working position of the multi-axis palletizing robot 23. The multi-axis palletizing robot 23, in conjunction with the gripping component 24 at the end, grabs the packaging box from the packaging box transfer storage component 16 and then moves to the top of the sub-stacking plate of the first pallet transfer module 3 to stack the packaging boxes neatly according to the preset rules.

[0063] Several sets of first pallet transfer modules 3 are arranged side by side on one side of the palletizing module 2 to carry sub-pallets and stacked packaging boxes. Each set of first pallet transfer modules 3 includes a set of first transfer roller conveyor bases 31. Several sets of first transfer roller conveyor bases 31 are arranged in parallel on one side of the palletizing module 2. A set of first roller transfer conveyors 32 is installed on the top of each set of first transfer roller conveyor bases 31. A set of running baffles 33 is installed at the end of each set of first roller transfer conveyors 32.

[0064] The first transfer roller conveyor base 31 provides installation support for the first roller transfer conveyor 32. The first roller transfer conveyor 32 receives the sub-pallet transferred from the first pallet conveyor module 6 and keeps the sub-pallet stable so that the multi-axis palletizing robot 23 can stack the packaging boxes. The running baffle 33 at the end is used to assist in positioning the sub-pallet and prevent it from shifting during the stacking process.

[0065] The pallet temporary storage module 4 is located on the side of the first pallet transfer module 3 and is used for receiving, clamping, and stacking the mother pallet. The pallet temporary storage module 4 includes a pallet temporary storage roller conveyor base 41, which is located on the side of the first transfer roller conveyor base 31. A pallet temporary storage roller conveyor 42 is installed on the top of the pallet temporary storage roller conveyor base 41, and a height adjustment frame 43 is installed on one side of the pallet temporary storage roller conveyor base 41 for height adjustment. A height adjustment cylinder 44 is installed on the top of one side of the frame 43. A movable frame 45 is installed in the middle of one side of the height adjustment frame 43 via a vertical slide rail. The top of the movable frame 45 is connected to the movable part of the height adjustment cylinder 44. Two sets of width adjustment cylinders 46 in opposite directions are installed in the middle of the surface of the movable frame 45. A set of pallet clamping plates 47 are installed on both sides of the surface of the movable frame 45 via a horizontal slide rail. The two sets of pallet clamping plates 47 are respectively connected to the movable parts of the two sets of height adjustment frames 43.

[0066] The pallet temporary storage roller conveyor 42 receives the mother pallet transferred from the first pallet conveying module 6. The height adjustment cylinder 44 pushes the movable frame 45 to move down along the vertical slide rail, so that the bottom of the two sets of width adjustment cylinders 46 are aligned with the mother pallet. The pallet clamping plate 47 moves in opposite directions under the drive of the width adjustment cylinder 46 to complete the clamping and fixing of the mother pallet. Then, the height adjustment cylinder 44 pulls the movable frame 45 up, raising the current mother pallet by the height of one mother pallet, leaving space for the entry of the next set of mother pallets. When it is necessary to release the mother pallet, the pallet clamping plate 47 moves in opposite directions to release the clamp, and the mother pallet falls to the top of the pallet temporary storage roller conveyor 42.

[0067] The pallet manual delivery module 5 is located on the side of the first pallet transfer module 3 on the other side, and is used for delivery and transmission when manually replenishing pallets. The pallet manual delivery module 5 includes a delivery module frame 51, which is installed on the side of the first transfer roller conveyor base 31 on the other side. The delivery module frame 51 is equipped with a manual delivery roller conveyor 52, and a manual delivery roller conveyor lifting module 53 is installed on the top of the delivery module frame 51. The traction end of the manual delivery roller conveyor lifting module 53 is connected to the manual delivery roller conveyor 52, and the manual delivery roller conveyor 52 is tractioned by the manual delivery roller conveyor lifting module 53.

[0068] The manual feeding roller conveyor lifting module 53 can pull the manual feeding roller conveyor 52 up and down along the feeding module frame 51 to adjust its height, making it convenient for operators to place pallets on the manual feeding roller conveyor 52; after placement, the manual feeding roller conveyor 52 will convey the pallet to the first pallet conveying module 6 and integrate it into the automated production line.

[0069] The first pallet conveying module 6 is arranged parallel to one side of the first pallet transfer module 3, the pallet temporary storage module 4, and the pallet manual delivery module 5, which are arranged side by side. It is the core conveying structure for transferring pallets between the modules. The first pallet conveying module 6 includes a first conveying guide rail 61, which is arranged parallel to one side of the first pallet transfer module 3, the pallet temporary storage module 4, and the pallet manual delivery module 5. The length of the first conveying guide rail 61 is the same as the width of the first pallet transfer module 3, the pallet temporary storage module 4, and the pallet manual delivery module 5. A first conveying slide 62 is installed on the top of the first conveying guide rail 61, and a first pallet conveying roller conveyor 63 is installed on the top of the first conveying slide 62. The working area of ​​the first pallet conveying roller conveyor 63 covers the first pallet transfer module 3, the pallet temporary storage module 4, and the pallet manual delivery module 5.

[0070] The first conveying slide 62 can move laterally along the first conveying guide rail 61, driving the first pallet conveying roller conveyor 63 at the top to adjust its position. The working area of ​​the first pallet conveying roller conveyor 63 covers multiple modules. It can transfer the mother pallet from the third pallet transfer module 10 to the pallet temporary storage module 4, transfer the child pallet to the first pallet transfer module 3, and transfer the mother pallet from the pallet temporary storage module 4 to the first unstacking module 7, thereby achieving precise pallet transfer.

[0071] The first unstacking module 7 and the second pallet transfer module 8 are combined to form a temporary storage module. Several temporary storage modules are arranged side by side in the middle of one side of the first pallet conveying module 6 to complete the final stacking of the sub-pallets and the mother pallet. The first unstacking module 7 includes a first unstacking platform 71. A first unstacking roller conveyor 72 is installed on the top of the first unstacking platform 71. A first lead screw adjusting mechanism 73 is installed in the middle of the interior of the first unstacking platform 71. A set of first lead screw lifters is installed at the top of each of the two movable parts of the first lead screw adjusting mechanism 73. The first set of first lead screw lifting machines 74, together with the first lead screw directional machine 73, are used to clamp and lift the pallet; the second pallet transfer module 8 includes a second transfer roller conveyor base 81, which is located at the end of the first unstacking platform 71, and a second transfer roller conveyor 82 is installed on the top of the second transfer roller conveyor base 81. The second transfer roller conveyor 82 is flush with the second unstacking module 9, and the second transfer roller conveyor 82 and the second unstacking module 9 form a continuous transmission channel;

[0072] The first unstacking roller conveyor 72 receives the sub-pallets of stacked packaging boxes transferred from the first pallet conveying module 6. The first lead screw directional mechanism 73 drives two sets of first lead screw lifting mechanisms 74 to move in opposite directions, clamping the sub-pallets and lifting them upwards. After the mother pallet is transferred from the first pallet conveying module 6 to the first unstacking roller conveyor 72, the first lead screw lifting mechanism 74 drives the sub-pallet to fall, so that the sub-pallet and the mother pallet fit precisely together, completing the final stacking. The second transfer roller conveyor 82 is flush with the second unstacking roller conveyor 92, forming a continuous transmission channel to assist in the transition transmission of the pallets.

[0073] The second unstacking module 9 and the third pallet transfer module 10 are combined to form an unstacking transmission module. The unstacking transmission module and the temporary storage module are arranged side by side for the unstacking separation and transmission of the parent and child pallets. The second unstacking module 9 includes a second unstacking platform 91, which is aligned with the pallet temporary storage roller conveyor base 41. A second unstacking roller conveyor 92 is installed on the top of the second unstacking platform 91. A second lead screw adjusting mechanism 93 is installed in the middle of the interior of the second unstacking platform 91. A set of second lead screws is installed at the top of each of the two movable parts of the second lead screw adjusting mechanism 93. Lift 94; The third pallet transfer module 10 includes a third transfer roller conveyor base 101 and a third transfer roller conveyor 102. The third transfer roller conveyor base 101 is mounted on the end of the second unstacking platform 91. The third transfer roller conveyor base 101 is aligned with the first pallet conveying roller conveyor 63. The third transfer roller conveyor 102 is mounted on the top of the third transfer roller conveyor base 101. The third transfer roller conveyor 102, the first pallet conveying roller conveyor 63, and the pallet temporary storage roller conveyor 42 form a continuous transmission channel.

[0074] The second unstacking roller conveyor 92 on the second unstacking platform 91 receives the mother and child pallets transferred from the second pallet conveying module 11. The second lead screw directional mechanism 93 drives two sets of second lead screw lifting mechanisms 94 to move in opposite directions, clamping the child pallet and lifting it upwards to separate the mother and child pallets. The separated mother pallet is transferred by the second unstacking roller conveyor 92 to the third transfer roller conveyor 102, and then transferred by the third transfer roller conveyor 102 to the first pallet conveying module 6. The base 101 of the third transfer roller conveyor provides stable support for the third transfer roller conveyor 102 to ensure smooth transmission of the mother pallet.

[0075] The second pallet conveying module 11 is installed on one side of the temporary storage module and is used for the input of mother and child pallets and the output of the final stacked pallets. The second pallet conveying module 11 includes a second conveying guide rail 111, a second conveying slide 112 is installed at the top of the second conveying guide rail 111, and a second pallet conveying roller conveyor 113 is installed at the top of the second conveying slide 112. The fourth pallet transfer module 12 includes a fourth transfer roller conveyor base 121, which is aligned with the delivery module frame 51. A fourth transfer roller conveyor 122 is installed at the top of the fourth transfer roller conveyor base 121. The second pallet conveying roller conveyor 113 is aligned with the second transfer roller conveyor 82, the second unstacked roller conveyor 92, and the second conveying slide 112. The working area of ​​the second pallet conveying roller conveyor 113 covers the second transfer roller conveyor 82, the second unstacked roller conveyor 92, and the second conveying slide 112.

[0076] The second conveyor slide 112 moves laterally along the second conveyor guide rail 111, driving the second pallet conveyor roller conveyor 113 to adjust its position. The second pallet conveyor roller conveyor 113 first receives the stacked mother and child pallets transferred from the external warehouse outlet and transfers them to the second unstacking module 9 for unstacking. After the pallets are finally stacked, the second pallet conveyor roller conveyor 113 moves to the corresponding position of the first unstacking module 7, receives the stacked pallets, and then, driven by the second conveyor slide 112, moves the pallets laterally to the external warehouse inlet, completing the output of the entire packaging process.

[0077] Several sets of fourth pallet transfer modules 12 are arranged longitudinally to form a return channel. The return channel is set up side by side with the temporary storage module for the return transport of empty pallets or other auxiliary components. In use, the fourth transfer roller conveyor base 121 provides installation support for the fourth transfer roller conveyor 122. Several sets of fourth transfer roller conveyors 122 work together to form a continuous return channel, which can return used empty pallets or other components that need to be recycled from the end of the production line to the pallet replenishment area at the front end, realizing the recycling of resources.

[0078] Instructions for using a packaging assembly line system: including the following steps:

[0079] In step S1, when the externally formed packaging box is transferred to the top of the feeding conveyor belt 14, the labeling machine 12 generates a label according to the production information, and the multi-axis labeling robot arm 13 grabs the printed label and affixes the label to the surface of the packaging box.

[0080] In step S21, the discharge port of the external warehouse transfers the stacked mother and daughter pallets to the top of the second pallet conveyor roller conveyor 113. The second conveyor slide 112 drives the second pallet conveyor roller conveyor 113 and the mother and daughter pallets on the second pallet conveyor roller conveyor 113 to move along the second conveyor guide rail 111. When the second pallet conveyor roller conveyor 113 moves in front of the second unstacking roller conveyor 92 and aligns with the second unstacking roller conveyor 92, the second pallet conveyor roller conveyor 113 transfers the mother and daughter pallets to the top of the second unstacking roller conveyor 92. The second screw aligning mechanism 93 drives two sets of second screw lifting mechanisms 94 to move in opposite directions. During the opposite movement, the second screw lifting mechanism 94 completes the clamping of the daughter pallet. After the second screw lifting mechanism 94 completes the clamping of the daughter pallet, it lifts the daughter pallet upward.

[0081] In step S22, the second unstacking roller conveyor 92 transfers the mother pallet to the top of the third transfer roller conveyor 102, the third transfer roller conveyor 102 transfers the mother pallet to the top of the first pallet conveying roller conveyor 63, the first pallet conveying roller conveyor 63 transfers the mother pallet to the top of the pallet temporary storage roller conveyor 42, the height adjustment cylinder 44 pushes the movable frame 45 down, so that the bottom of the two sets of width adjustment cylinders 46 are aligned with the previous set of mother pallets, the pallet clamping plate 47 pulls the two sets of width adjustment cylinders 46 to move in opposite directions, completing the clamping and gripping of the pallet, the height adjustment cylinder 44 pulls the movable frame 45 up, and the width adjustment cylinder 46 lifts the current mother pallet up by the height of one mother pallet, leaving space for the next set of mother pallets;

[0082] In step S23, the second screw lifter 94 lowers the sub-pallet to the top of the second unstacking roller conveyor 92. The second unstacking roller conveyor 92 transfers the sub-pallet to the top of the third transfer roller conveyor 102. The third transfer roller conveyor 102 transfers the sub-pallet to the top of the first pallet conveying roller conveyor 63. The first conveying slide 62 drives the first pallet conveying roller conveyor 63 and the sub-pallet on top of the first pallet conveying roller conveyor 63 to transfer until the first pallet conveying roller conveyor 63 is aligned with one of the first roller transfer conveyors 32. The first pallet conveying roller conveyor 63 transfers the sub-pallet to the top of the first roller transfer conveyor 32. The multi-axis palletizing robot 23 picks up the packaging box and stacks it on the sub-pallet.

[0083] Step S31, repeat step S21. After a new set of mother and child pallets is unstacked by the second unstack module 9, the mother pallet continues to be sent to the pallet temporary storage roller conveyor 42. Simultaneously, the pallet clamping plate 47 pushes the two sets of width adjusting cylinders 46 to move in opposite directions to release the clamping of the previous set of mother pallets, so that the previous set of mother pallets falls on top of the current mother pallet. Repeat step S22 to complete the stacking of mother pallets.

[0084] Step S32, repeat step S23 until the top of the first roller transfer conveyor 32 of the first pallet transfer module 3 of all groups is equipped with a sub-pallet.

[0085] Step S41: After the sub-pallets on the first roller transfer conveyor 32 have completed the stacking of the packaging boxes, the first conveying slide 62 drives the first pallet conveying roller conveyor 63 to move to the corresponding position of the first roller transfer conveyor 32. The first roller transfer conveyor 32 transfers the completed sub-pallets to the top of the first pallet conveying roller conveyor 63. The first pallet conveying roller conveyor 63 drives the completed sub-pallets to the setting position of one of the first unstacking roller conveyors 72. The first pallet conveying roller conveyor 63 transfers the completed sub-pallets to the top of the first unstacking roller conveyor 72. The first screw adjusting mechanism 73 drives the two sets of first screw lifting mechanisms 74 to move in opposite directions until the first screw lifting mechanism 74 forms a clamp on the completed sub-pallets. The first screw lifting mechanism 74 drives the completed sub-pallets to move upward.

[0086] In step S42, the height adjusting cylinder 44 moves the movable frame 45 downward, causing the mother pallet held by the width adjusting cylinder 46 to fall to the top of the pallet temporary storage roller conveyor 42. The pallet clamping plate 47 pushes the width adjusting cylinder 46 to release its grip on the mother pallet. The height adjusting cylinder 44 moves the movable frame 45 upward by the height of one set of mother pallets. The pallet clamping plate 47 pulls the width adjusting cylinder 46 to complete its gripping of the previous set of mother pallets. The height adjusting cylinder 44 moves the movable frame 45 upward, lifting the previous set of mother pallets held by the width adjusting cylinder 46. The first conveying slide 62 drives the first pallet conveying roller conveyor 63 to move to the position of the corresponding pallet temporary storage roller conveyor 42. The pallet temporary storage roller conveyor 42 transfers the mother pallet to the top of the first pallet conveying roller conveyor 63. The first conveying slide 62 drives the first pallet conveying roller conveyor 63 to move to the corresponding position of the first unstacking roller conveyor 72. The first pallet conveying roller conveyor 63 transfers the mother pallet to the top of the first unstacking roller conveyor 72. The first screw lifting machine 74 drives the completed stacked sub-pallet to fall, so that the completed stacked sub-pallet lands on top of the mother pallet to complete the final stacking.

[0087] In step S43, the second conveyor slide 112 drives the second pallet conveyor roller conveyor 113 to move to the position corresponding to the first unstacking roller conveyor 72. The first unstacking roller conveyor 72 transfers the pallet that has completed the final stacking to the top of the second pallet conveyor roller conveyor 113. The second conveyor slide 112 drives the second pallet conveyor roller conveyor 113 and the pallet that has completed the final stacking at the top of the second pallet conveyor roller conveyor 113 to move laterally to the feed inlet of the external warehouse.

[0088] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

[0089] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A packaging assembly line system, characterized in that, It includes a labeling module (1), a palletizing module (2), a first pallet transfer module (3), a pallet temporary storage module (4), a pallet manual delivery module (5), a first pallet conveying module (6), a first unstacking module (7), a second pallet transfer module (8), a second unstacking module (9), a third pallet transfer module (10), a second pallet conveying module (11), and a fourth pallet transfer module (12); The labeling module (1) is set in a designated area of ​​the designated site; the palletizing module (2) is set parallel to one side of the labeling module (1); Several sets of the first pallet transfer modules (3) are arranged side by side on one side of the palletizing module (2); the pallet temporary storage module (4) is located on the side of the first pallet transfer module (3) on one side; The pallet manual delivery module (5) is located on the side of the first pallet transfer module (3) on the other side; the first pallet conveying module (6) is arranged in parallel on one side of the first pallet transfer module (3), the pallet temporary storage module (4) and the pallet manual delivery module (5) arranged side by side; The first unstack module (7) and the second pallet transfer module (8) are combined to form a temporary storage module, and several of the temporary storage modules are arranged side by side in the middle of one side of the first pallet transport module (6). The second unstack module (9) and the third stack transfer module (10) are combined to form an unstack transmission module, and the unstack transmission module and the temporary storage module are arranged side by side; The second pallet conveying module (11) is installed on one side of the temporary storage module; Several sets of the fourth pallet transfer modules (12) are arranged longitudinally to form a return channel, and the return channel is set up side by side with the temporary storage module.

2. The packaging assembly line system as described in claim 1, characterized in that, The labeling module (1) includes a labeling module frame (11). Several labeling machines (12) are installed side by side on one side of the inner side of the labeling module frame (11). A multi-axis labeling robotic arm (13) is arranged above the several labeling machines (12). The multi-axis labeling robotic arm (13) is used to grab the labels printed by the labeling machines (12). A feeding conveyor belt (14) and a packaging box transfer conveyor assembly (15) are installed in parallel below the multi-axis labeling robotic arm (13). The feeding conveyor belt (14) is connected to the packaging box transfer conveyor assembly (15). The feeding conveyor belt (14) is used to receive packaging boxes sent by external unpacking equipment. The packaging box transfer conveyor assembly (15) The two ends of the packaging box transfer conveyor (15) are respectively used as receiving positions and transfer positions. The receiving position of the packaging box transfer conveyor (15) is parallel to the feeding conveyor belt (14). The other side of the labeling module frame (11) is provided with two sets of packaging box transfer temporary storage components (16). The two sets of packaging box transfer temporary storage components (16) are located on both sides of the transfer position of the packaging box transfer conveyor (15). The packaging box transfer temporary storage component (16) is used to receive the packaging boxes transferred by the packaging box transfer conveyor (15). The other side of the receiving position of the packaging box transfer conveyor (15) is provided with a manual feeding conveyor component (17). The manual feeding conveyor component (17) is used for manually feeding the packaging boxes for transfer.

3. The packaging assembly line system as described in claim 2, characterized in that, The palletizing module (2) includes a palletizing guide rail (21), which is located on one side of the packaging box conveying temporary storage component (16). A palletizing platform (22) is mounted on the top of the palletizing guide rail (21). The palletizing platform (22) is used to move laterally along the palletizing guide rail (21). A multi-axis palletizing robot (23) is mounted on the top of the palletizing platform (22). A gripping component (24) is mounted on the working axis end of the multi-axis palletizing robot (23). The multi-axis palletizing robot (23) is used to cooperate with the gripping component (24) to grip the packaging boxes temporarily stored on the packaging box conveying temporary storage component (16).

4. A packaging assembly line system as described in claim 3, characterized in that, Each of the first pallet transfer modules (3) includes a set of first transfer roller conveyor bases (31). Several sets of first transfer roller conveyor bases (31) are arranged in parallel on one side of the palletizing module (2). A set of first roller transfer conveyors (32) is installed on the top of each set of first transfer roller conveyor bases (31). A set of running baffles (33) is installed at the end of each set of first roller transfer conveyors (32).

5. A packaging assembly line system as described in claim 3, characterized in that, The pallet storage module (4) includes a pallet storage roller conveyor base (41), which is located on the side of a first transfer roller conveyor base (31). A pallet storage roller conveyor (42) is mounted on the top of the pallet storage roller conveyor base (41). A height adjustment frame (43) is mounted on one side of the pallet storage roller conveyor base (41), and a height adjustment cylinder (44) is mounted on the top of one side of the height adjustment frame (43). A movable frame (45) is installed on one side of the height adjustment frame (43) via a vertical slide rail. The top of the movable frame (45) is connected to the movable part of the height adjustment cylinder (44). Two sets of width adjustment cylinders (46) with opposite directions are installed at the middle position of the surface of the movable frame (45). A set of pallet clamping plates (47) are installed on both sides of the surface of the movable frame (45) via a horizontal slide rail. The two sets of pallet clamping plates (47) are respectively connected to the movable parts of the two sets of height adjustment frames (43).

6. A packaging assembly line system as described in claim 1, characterized in that, The pallet manual delivery module (5) includes a delivery module frame (51), which is installed on the side of the first transfer roller conveyor base (31) on the other side. The delivery module frame (51) is equipped with a manual delivery roller conveyor (52), and a manual delivery roller conveyor lifting module (53) is installed on the top of the delivery module frame (51). The traction end of the manual delivery roller conveyor lifting module (53) is connected to the manual delivery roller conveyor (52), and the manual delivery roller conveyor (52) is tractioned by the manual delivery roller conveyor lifting module (53).

7. A packaging assembly line system as described in claim 5, characterized in that, The first pallet conveying module (6) includes a first conveying guide rail (61), which is arranged parallel to one side of the first pallet transfer module (3), the pallet temporary storage module (4) and the pallet manual delivery module (5). The length of the first conveying guide rail (61) is consistent with the width of the first pallet transfer module (3), the pallet temporary storage module (4) and the pallet manual delivery module (5). A first conveying slide (62) is installed on the top of the first conveying guide rail (61), and a first pallet conveying roller conveyor (63) is installed on the top of the first conveying slide (62). The working area of ​​the first pallet conveying roller conveyor (63) covers the first pallet transfer module (3), the pallet temporary storage module (4) and the pallet manual delivery module (5).

8. A packaging assembly line system as described in claim 7, characterized in that, The first unstacking module (7) includes a first unstacking platform (71), a first unstacking roller conveyor (72) is installed on the top of the first unstacking platform (71), a first lead screw aligning mechanism (73) is installed in the middle of the interior of the first unstacking platform (71), and a set of first lead screw lifting mechanisms (74) is installed at the top of each of the two movable parts of the first lead screw aligning mechanism (73). The two sets of first lead screw lifting mechanisms (74) cooperate with the first lead screw aligning mechanism (73) to clamp and lift the pallet; the second pallet transfer module ( 8) Includes a second transfer roller conveyor base (81), which is located at the end of the first unstacking platform (71). The second transfer roller conveyor (82) is mounted on top of the second transfer roller conveyor base (81). The second transfer roller conveyor (82) and the second unstacking roller conveyor (92) are flush and form a continuous transmission channel. The second unstacking module (9) includes a second unstacking platform (9... 1) The second unstacking platform (91) is aligned with the pallet temporary storage roller conveyor base (41). A second unstacking roller conveyor (92) is installed on the top of the second unstacking platform (91). A second screw aligning mechanism (93) is installed in the middle of the interior of the second unstacking platform (91). A set of second screw lifting mechanisms (94) is installed at the top of each of the two movable parts of the second screw aligning mechanism (93). The third pallet transfer module (10) includes a third transfer roller conveyor base (101) and a third transfer roller conveyor base (41). The third transfer roller conveyor base (101) is mounted at the end of the second unstacking platform (91). The third transfer roller conveyor base (101) is aligned with the first pallet conveyor roller conveyor (63). The third transfer roller conveyor (102) is mounted on the top of the third transfer roller conveyor base (101). The third transfer roller conveyor (102), the first pallet conveyor roller conveyor (63), and the pallet temporary storage roller conveyor (42) form a continuous transmission channel.

9. A packaging assembly line system as described in claim 7, characterized in that, The second pallet conveying module (11) includes a second conveying guide rail (111), a second conveying slide (112) is installed at the top of the second conveying guide rail (111), and a second pallet conveying roller conveyor (113) is installed at the top of the second conveying slide (112); the fourth pallet transfer module (12) includes a fourth transfer roller conveyor base (121), the fourth transfer roller conveyor base (121) is aligned with the delivery module frame (51), and a fourth transfer roller conveyor (122) is installed at the top of the fourth transfer roller conveyor base (121); the second pallet conveying roller conveyor (113) is aligned with the second transfer roller conveyor (82), the second unstacked roller conveyor (92) and the second conveying slide (112), and the working area of ​​the second pallet conveying roller conveyor (113) covers the second transfer roller conveyor (82), the second unstacked roller conveyor (92) and the second conveying slide (112).

10. A method of using a packaging assembly line system according to any one of claims 1-9, characterized in that: Includes the following steps: In step S1, when the externally formed packaging box is transferred to the top of the feeding conveyor belt (14), the labeling machine (12) generates a label according to the production information, and the multi-axis labeling robot arm (13) grabs the printed label and affixes the label to the surface of the packaging box. In step S21, the discharge port of the external warehouse transfers the stacked mother and daughter pallets to the top of the second pallet conveyor roller conveyor (113). The second conveyor slide (112) drives the second pallet conveyor roller conveyor (113) and the mother and daughter pallets on the second pallet conveyor roller conveyor (113) to move along the second conveyor guide rail (111). When the second pallet conveyor roller conveyor (113) moves to the front of the second unstacking roller conveyor (92) and aligns with the second unstacking roller conveyor (92), the second pallet conveyor roller conveyor (113) transfers the mother and daughter pallets to the top of the second unstacking roller conveyor (92). The second screw aligning machine (93) drives two sets of second screw lifting machines (94) to move in opposite directions. During the opposite movement, the second screw lifting machines (94) complete the clamping of the daughter pallets. After the second screw lifting machines (94) complete the clamping of the daughter pallets, they lift the daughter pallets upward. Step S22, the second unstacking roller conveyor (92) transfers the mother pallet to the top of the third transfer roller conveyor (102), the third transfer roller conveyor (102) transfers the mother pallet to the top of the first pallet conveying roller conveyor (63), the first pallet conveying roller conveyor (63) transfers the mother pallet to the top of the pallet temporary storage roller conveyor (42), the height adjustment cylinder (44) pushes the movable frame (45) down, so that the bottom of the two sets of width adjustment cylinders (46) are aligned with the previous set of mother pallets, the pallet clamping plate (47) pulls the two sets of width adjustment cylinders (46) to move in opposite directions, and completes the clamping and gripping of the pallet, the height adjustment cylinder (44) pulls the movable frame (45) up, and the width adjustment cylinder (46) lifts the current mother pallet up by the height of one mother pallet, leaving space for the next set of mother pallets; In step S23, the second screw lift (94) lowers the sub-pallet to the top of the second unstacking roller conveyor (92), the second unstacking roller conveyor (92) transfers the sub-pallet to the top of the third transfer roller conveyor (102), the third transfer roller conveyor (102) transfers the sub-pallet to the top of the first pallet conveying roller conveyor (63), the first conveying slide (62) drives the first pallet conveying roller conveyor (63) and the sub-pallet on the top of the first pallet conveying roller conveyor (63) to transfer until the first pallet conveying roller conveyor (63) is aligned with one of the first roller transfer conveyors (32), the first pallet conveying roller conveyor (63) transfers the sub-pallet to the top of the first roller transfer conveyor (32), and the multi-axis palletizing robot (23) picks up the packaging box and stacks it on the sub-pallet; Step S31, repeat step S21. After a new set of mother and child stacks is unstacked by the second unstack module (9), the mother stack continues to be sent to the stack temporary storage roller conveyor (42). Simultaneously, the stack clamping plate (47) pushes two sets of width adjustment cylinders (46) to move in opposite directions to release the clamping of the previous set of mother stacks, so that the previous set of mother stacks falls on top of the current mother stack. Repeat step S22 to complete the stacking of mother stacks. Step S32, repeat step S23 until the top of the first roller transfer conveyor (32) of the first pallet transfer module (3) of all groups is equipped with a sub-pallet; Step S41: After the sub-pallets on the first roller transfer conveyor (32) have completed the stacking of the packaging boxes, the first conveying slide (62) drives the first pallet conveying roller conveyor (63) to move to the corresponding position of the first roller transfer conveyor (32). The first roller transfer conveyor (32) transfers the completed sub-pallets to the top of the first pallet conveying roller conveyor (63). The first pallet conveying roller conveyor (63) drives the completed sub-pallets to the setting position of one of the first unstacking roller conveyors (72). The first pallet conveying roller conveyor (63) transfers the completed sub-pallets to the top of the first unstacking roller conveyor (72). The first screw adjusting mechanism (73) drives the two sets of first screw lifting mechanisms (74) to move in opposite directions until the first screw lifting mechanism (74) forms a clamp on the completed sub-pallets. The first screw lifting mechanism (74) drives the completed sub-pallets to move upward. In step S42, the height adjusting cylinder (44) drives the movable frame (45) to move downward, causing the mother pallet held by the width adjusting cylinder (46) to fall to the top of the pallet temporary storage roller conveyor (42). The pallet clamping plate (47) pushes the width adjusting cylinder (46) to release the width adjusting cylinder (46) from the mother pallet. The height adjusting cylinder (44) drives the movable frame (45) to move up the height of one set of mother pallets. The pallet clamping plate (47) pulls the width adjusting cylinder (46) to complete the clamping of the previous set of mother pallets. The height adjusting cylinder (44) drives the movable frame (45) to move upward, and the previous set of mother pallets held by the width adjusting cylinder (46) is moved towards... The first conveying slide (62) is lifted up, and the first pallet conveying roller conveyor (63) moves to the position of the corresponding pallet temporary storage roller conveyor (42). The pallet temporary storage roller conveyor (42) transfers the mother pallet to the top of the first pallet conveying roller conveyor (63). The first conveying slide (62) moves the first pallet conveying roller conveyor (63) to the corresponding position of the first unstacking roller conveyor (72). The first pallet conveying roller conveyor (63) transfers the mother pallet to the top of the first unstacking roller conveyor (72). The first screw lifter (74) drives the completed stacked sub-pallet to fall, so that the completed stacked sub-pallet falls on the top of the mother pallet to complete the final stacking. In step S43, the second conveying slide (112) drives the second pallet conveying roller conveyor (113) to move to the position corresponding to the first unstacking roller conveyor (72). The first unstacking roller conveyor (72) transfers the pallet that has completed the final stacking to the top of the second pallet conveying roller conveyor (113). The second conveying slide (112) drives the second pallet conveying roller conveyor (113) and the pallet that has completed the final stacking at the top of the second pallet conveying roller conveyor (113) to move laterally to the feed inlet of the external warehouse.

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