A device for printing patterns on the surface of corrugated cardboard boxes

Abstract

This utility model relates to the field of printing patterns on the surface of packaging boxes, specifically to a printing device for corrugated cardboard packaging boxes. The device includes a base plate, a feeding mechanism fixedly connected to the top of the base plate, a support fixedly connected to the top of the base plate, and two protective plates fixedly connected to the top of the support. A guiding mechanism is fixedly connected to the inner walls of the tops of the two protective plates. A conveyor belt is rotatably connected to adjacent sides of the two protective plates, and a printing machine is fixedly connected to the tops of the two protective plates. The feeding mechanism includes a fixed compartment. This utility model utilizes the principle that material is conveyed to a pallet via a conveyor belt. The increased weight of the material causes the pallet and connecting plate to slowly descend under the action of a damping column. After the pallet lands, it is pulled away by a forklift. At this time, a counterweight, via a rope and a limit block as a fulcrum, pulls the connecting plate upwards and resets it, achieving stable and convenient feeding and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of printing patterns on the surface of packaging boxes, and in particular to a device for printing patterns on the surface of corrugated paper packaging boxes. Background Technology

[0002] The corrugated cardboard box surface printing device integrates components such as printing rollers, ink supply systems, and conveyor belts. During the transport of the corrugated cardboard box, it accurately and efficiently transfers the patterns or text on the printing plate to the surface of the box using printing materials such as inks and coatings, employing printing technologies such as gravure, letterpress, and inkjet printing. This meets the needs of product labeling, brand promotion, and information transmission. Some devices are also equipped with auxiliary functions such as dust removal, drying, and pattern calibration to ensure printing quality and efficiency. A search revealed a utility model patent with publication number CN221519072U, which discloses a device for printing patterns on the surface of corrugated cardboard boxes. The device includes a base, with end drive rollers shafted to the left and right sides of the base's interior. A packaging box transmission belt is sleeved on the outer side of the end drive rollers. A middle support roller is shafted to the upper inner side of the base. Plate-shaped supports are bolted to the front and rear ends of the upper part of the base. Electric lifting rods are bolted to the front and rear ends of the inner side of the plate-shaped supports. The key feature is that a pattern rotator is installed inside the plate-shaped supports, and an adjustable pattern holder is installed outside the pattern rotator. The beneficial effects of this utility model are: through the arrangement of the hollowed-out roller ring, fixed boss, central support, end connecting plate, and servo motor, it is advantageous to print multiple patterns simultaneously on the surface of the corrugated cardboard box, eliminating the need for repeated processing and improving the printing efficiency of the device for corrugated cardboard boxes.

[0003] While the aforementioned patent's design, featuring a perforated roller, fixed boss, central support, end connecting plate, and servo motor, facilitates the simultaneous printing of multiple patterns onto the surface of corrugated cardboard boxes without requiring repetitive processing, thus improving printing efficiency, the problem of inconvenient unloading of printed materials remains. Due to insufficient optimization of the unloading process in the device design, corrugated cardboard boxes are prone to jamming and disorderly stacking when sliding down after printing. The lack of an effective auxiliary unloading structure forces workers to frequently manually adjust the unloading method and transport materials, reducing production efficiency and increasing labor costs and material loss risks. Therefore, a corrugated cardboard box surface pattern printing device is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a device for printing patterns on the surface of corrugated cardboard packaging boxes, which solves the problem that workers need to frequently manually adjust the feeding method and transport materials, reducing production efficiency and increasing labor costs and material loss risks.

[0005] To achieve the above objectives, this utility model provides a corrugated cardboard packaging box surface pattern printing device. It includes a base plate, a feeding mechanism fixedly connected to the top of the base plate, a support fixedly connected to the top of the base plate, two protective plates fixedly connected to the top of the support, a guiding mechanism fixedly connected to the inner walls of the tops of the two protective plates, a conveyor belt rotatably connected to adjacent sides of the two protective plates, and a printing machine fixedly connected to the tops of the two protective plates. The feeding mechanism includes a fixed chamber, the bottom of which is fixedly connected to the top of the base plate. Multiple damping columns are fixedly connected to the inner wall of the bottom of the fixed chamber, a connecting plate is fixedly connected to the top of the multiple damping columns, a tray is fixedly connected to the top of the connecting plate, a baffle is fixedly connected to the top right side of the fixed chamber, and an adjusting component is fixedly connected to the bottom of the connecting plate.

[0006] The guiding mechanism includes two connecting compartments. The bottom ends of the two connecting compartments are fixedly connected to the inner top walls of the two protective plates. A rotating shaft is rotatably connected to the left inner wall of each of the two connecting compartments. A guide plate is fixedly connected to the outside of each of the two rotating shafts. A movable block two is slidably connected to the inner wall of each of the two connecting compartments on opposite sides. A connecting column is fixedly connected to the adjacent side of each of the two movable blocks two. A movable column is fixedly connected to the adjacent side of each of the two connecting columns. A control plate is fixedly connected to the opposite side of each of the two movable blocks two. Nuts are threadedly connected to the inner walls of the upper and lower ends of the two control plates.

[0007] The adjustment assembly includes multiple connecting blocks. The top ends of the multiple connecting blocks on their adjacent sides are fixedly connected to the bottom ends of the front and rear sides of the connecting plate. A damping rod is fixedly connected to the bottom end of each of the multiple connecting blocks. A moving block is fixedly connected to the far side of each of the multiple connecting blocks. A rope is fixedly connected to the adjacent side of each of the multiple moving blocks. Two limiting blocks are fixedly connected to the front and rear sides of the fixed chamber. Sliding grooves are provided on the inner walls of the front and rear sides of the fixed chamber. A slider is slidably connected to the front and rear sides of the fixed chamber. An adjusting plate is fixedly connected to the far side of each of the two sliders. A counterweight is fixedly connected to the top end of each of the two adjusting plates. A guide strip is fixedly connected to the bottom right side of the fixed chamber.

[0008] The bottom ends of the two ropes are fixedly connected to the left and right sides of the adjusting plate, and the outer sides of the multiple ropes are slidably connected to the inner walls of the multiple limiting blocks.

[0009] The two adjusting plates are slidably connected on their adjacent sides to the front and rear sides of the fixed chamber, and the two counterweights are slidably connected on their adjacent sides to the front and rear sides of the fixed chamber.

[0010] The bottom ends of the plurality of damping rods are fixedly connected to the inner wall of the bottom end of the fixed chamber, and the outer sides of the plurality of movable blocks are slidably connected to the inner walls of the front and rear sides of the fixed chamber.

[0011] The two guide plates are externally slidably connected to the inner walls of the two connecting compartments on their adjacent sides, and the bottom ends of the two guide plates are slidably connected to the outside of the conveyor belt. Guide grooves are provided on the opposite sides of the two guide plates.

[0012] The proximal sides of the plurality of nuts are threadedly connected to the distal inner walls of the two connecting chambers, and the external surfaces of the two movable columns are slidably connected to the distal inner walls of the two guide plates. This utility model relates to a device for printing patterns on the surface of corrugated cardboard packaging boxes. This utility model has the following beneficial effects: 1. In this utility model, the material is conveyed to the pallet by the conveyor belt. The increased weight of the material causes the pallet and connecting plate to move slowly downward under the action of the damping column. After the pallet lands, it is pulled away by the forklift. At this time, the counterweight block pulls the connecting plate upward and reset through the limit block as the fulcrum, thereby achieving the effect of stable and convenient material unloading and improving work efficiency.

[0013] 2. In this utility model, the moving block two drives the moving column to move through the connecting column. The moving column slides in the guide groove of the guide plate, thereby pushing the guide plate to rotate around the pivot. At the same time, rotating the nut can adjust the relative position of the control plate and the connecting chamber, thereby realizing flexible guidance and adjustment of the material transmission direction, effectively avoiding material deviation from affecting the printing accuracy and quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a three-dimensional schematic diagram of a corrugated cardboard packaging box surface pattern printing device proposed in this utility model; Figure 2 This is a schematic diagram of the fixed chamber of a corrugated cardboard packaging box surface pattern printing device proposed in this utility model; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0016] In the diagram: 1-Base plate; 2-Feeding mechanism; 21-Fixed compartment; 22-Damping column; 23-Connecting plate; 24-Pattern; 25-Baffle; 26-Adjusting component; 261-Connecting block; 262-Damping rod; 263-Moving block one; 264-Rope; 265-Limit block; 266-Adjusting plate; 267-Slider; 268-Counterweight; 269-Guide bar; 3-Bracket; 4-Protective plate; 5-Guiding mechanism; 51-Connecting compartment; 52-Rotating shaft; 53-Guide plate; 54-Moving block two; 55-Connecting column; 56-Moving column; 57-Control panel; 58-Nut; 6-Conveyor belt; 7-Printing machine. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0018] A device for printing patterns on the surface of corrugated cardboard boxes, as described in the reference. Figures 1 to 3 The system includes a base plate 1, which serves as the fundamental support structure for the entire printing device, possessing excellent stability and load-bearing capacity. A feeding mechanism 2 is fixedly connected to the top of the base plate 1. This mechanism is crucial for the automatic collection and feeding of materials, automatically completing the feeding operation once the material accumulates to a certain level. A support bracket 3 is also fixedly connected to the top of the base plate 1. The support bracket 3 is welded from high-strength metal tubing, providing excellent rigidity and stability. Two protective plates 4 are fixedly connected to the top of the support bracket 3. These plates primarily serve a protective function, preventing ink and materials from splashing onto the outside of the equipment during printing and contaminating the working environment. A guiding mechanism 5 is fixedly connected to the inner wall of the top of the two protective plates 4. This guiding mechanism 5 is an important component ensuring accurate material transmission on the conveyor belt 6, adjusting and guiding the material's transmission direction.

[0019] A conveyor belt 6 is rotatably connected to one side of each of the two protective plates 4. Driven by a motor, the conveyor belt 6 transports materials from one position to another at a constant speed, serving as the main channel for material transfer. A printing machine 7 is fixedly connected to the top of each of the two protective plates 4. The printing machine 7 is the core equipment for printing patterns on the surface of corrugated cardboard boxes. It prints patterns and text onto the corrugated cardboard boxes through the coordinated work of components such as printing rollers and ink transfer devices. The unloading mechanism 2 includes a fixed chamber 21, which accommodates and supports various components during the unloading process and also protects the internal structure. The bottom of the fixed chamber 21 is fixedly connected to the top of the base plate 1. Multiple damping columns 22 are fixedly connected to the inner wall of the bottom of the fixed chamber 21. The damping columns 22 contain damping fluid and pistons to ensure the safety and stability of the unloading process.

[0020] Multiple damping columns 22 are fixedly connected to their top ends with connecting plates 23, and trays 24 are fixedly connected to their top ends. The trays 24 hold the printed materials. As the materials accumulate on the trays 24, their weight gradually increases, causing the trays 24 and connecting plates 23 to move downwards together. A baffle 25 is fixedly connected to the top right side of the fixed chamber 21. The baffle 25 prevents materials from slipping off the right side of the fixed chamber 21 during accumulation, limiting and protecting the materials to ensure they are accurately stacked on the trays 24. An adjusting component 26 is fixedly connected to the bottom end of the connecting plates 23. The adjusting component 26 is the core component for automatically resetting the trays 24. After the trays 24 are unloaded, the weight of the counterweight 268 pulls the connecting plates 23 and the trays 24 upwards, returning them to their initial positions for the next material collection.

[0021] The adjusting assembly 26 includes multiple connecting blocks 261, which connect the connecting plate 23 to other components. The top ends of the multiple connecting blocks 261 on adjacent sides are fixedly connected to the bottom ends of the front and rear sides of the connecting plate 23. Each connecting block 261 has a damping rod 262 fixedly connected to its bottom end. The damping rod 262 functions similarly to the damping column 22, further increasing the damping effect during the up-and-down movement of the tray 24 and the connecting plate 23, making the movement smoother and reducing swaying and impact caused by inertia. Each connecting block 261 on a distant side has a moving block 263 fixedly connected, which can slide on the inner walls of the front and rear sides of the fixed chamber 21, thus transmitting force. Each moving block 263 has a rope 264 fixedly connected to an adjacent side. The rope 264 has high strength and flexibility, used for tensioning subsequent components, maintaining a stable movement trajectory, and ensuring accurate force transmission.

[0022] Two limiting blocks 265 are fixedly connected to the front and rear sides of the fixed chamber 21. The limiting blocks 265 limit and guide the rope 264, preventing the rope 264 from shifting or tangling during movement. Slide grooves are provided on the inner walls of both the front and rear sides of the fixed chamber 21, and sliders 267 are slidably connected to both sides. The sliders 267 cooperate with the slide grooves and can slide freely within them, preventing shifting of subsequent components. Adjusting plates 266 are fixedly connected to the opposite sides of the two sliders 267. The sliding of the sliders 267 within the slide grooves drives the rope 264 to pull the moving block 263 and the connecting plate 23, thus resetting the tray 24. Counterweights 268 are fixedly connected to the tops of the two adjusting plates 266. The counterweights 268 have a large weight and generate a downward pulling force using their own gravity. Through the transmission of the rope 264 and other components, this pulls the connecting plate 23 and the tray 24 upward, achieving automatic resetting of the tray 24. A guide bar 269 is fixedly connected to the bottom right side of the fixed compartment 21. The guide bar 269 guides the forklift when it picks up the pallet 24, enabling the forklift to accurately remove the pallet 24 from the fixed compartment 21.

[0023] Reference Figures 2 to 4 The guiding mechanism 5 includes two connecting chambers 51, which serve as the basic framework of the guiding mechanism 5. These chambers not only provide installation support for the internal components but also protect the internal structure from external interference. The bottom ends of the two connecting chambers 51 are fixedly connected to the inner walls of the top of the two protective plates 4. A rotating shaft 52 is rotatably connected to the left inner wall of each connecting chamber 51. The rotating shaft 52 is connected to the inner wall of the connecting chamber 51 via bearings, allowing it to rotate flexibly within the connecting chamber 51. Guide plates 53 are fixedly connected to the outside of each of the two rotating shafts 52. The guide plates 53 guide the material's transmission direction by contacting the material on the conveyor belt 6. Moving blocks 54 are slidably connected to the inner walls of the two connecting chambers 51 on opposite sides. The sliding design of the moving blocks 54 makes the adjustment of the guide plates 53 more flexible and precise, allowing for rapid adjustment of the position and angle of the guide plates 53 according to actual needs.

[0024] Each of the two movable blocks 54 has a connecting column 55 fixedly connected to its adjacent side. When the movable block 54 slides within the connecting chamber 51, the connecting column 55 transmits the movement of the movable block 54 to the subsequent components, allowing the movable column 56 to move within the guide groove of the guide plate 53, thereby pushing the guide plate 53 to rotate around the pivot 52. Each of the two connecting columns 55 has a movable column 56 fixedly connected to its adjacent side. The movable column 56 is perpendicularly connected to the connecting column 55, with one end fixed to the connecting column 55 and the other end sliding within the guide groove on the opposite side of the guide plate 53. Each of the two movable blocks 54 has a control plate 57 fixedly connected to its opposite side. The control plate 57 is the operating component for the operator to adjust the guiding mechanism 5. By operating the control plate 57, the operator can drive the movable block 54 to slide within the connecting chamber 51. Nuts 58 are threaded onto the inner walls of the upper and lower ends of both control plates 57. It can meet the precise requirements of different materials for the angle adjustment of the guide plate 53, ensuring that the material always maintains the accurate transmission direction on the conveyor belt 6, and improving the adaptability of the printing device to different production tasks.

[0025] Reference Figures 1 to 3 The bottom ends of two ropes 264 are fixedly connected to the left and right sides of the adjusting plate 266. When the counterweight 268 moves downward under the action of gravity, the adjusting plate 266 pulls the ropes 264, which then transmit the tension to the moving block 263, thereby driving the connecting plate 23 and the tray 24 to move upward, thus resetting the tray 24. The external parts of multiple ropes 264 are slidably connected to the inner walls of multiple limiting blocks 265. The limiting blocks 265 limit and guide the ropes 264. The adjacent sides of the two adjusting plates 266 are slidably connected to the front and rear sides of the fixed chamber 21. When the counterweight 268 moves downward, it drives the adjusting plates 266 to slide on the inner walls of the front and rear sides of the fixed chamber 21. Due to the guiding effect of the slide groove or slide rail, the adjusting plates 266 can only move up and down in the vertical direction.

[0026] Two counterweights 268 are slidably connected to the front and rear sides of the fixed chamber 21 on their adjacent sides. Utilizing their own weight to generate a downward pulling force, when the material on the pallet 24 is removed, the counterweights 268 slide downwards under gravity, pulling the connecting plate 23 and pallet 24 upwards via the transmission of components such as the rope 264. The bottom ends of multiple damping rods 262 are fixedly connected to the inner wall of the bottom of the fixed chamber 21. The damping rods 262 make the movement of the pallet 24 and connecting plate 23 smoother, reducing damage to equipment components caused by inertia and impact. Multiple moving blocks 263 are externally slidably connected to the inner walls of the front and rear sides of the fixed chamber 21. Due to the guiding effect of the inner wall of the fixed chamber 21, the moving blocks 263 can only slide in a predetermined direction, thereby driving the connecting plate 23 and pallet 24 upwards via the connecting block 261.

[0027] The two guide plates 53 are externally slidably connected to the inner walls of the two connecting chambers 51 on adjacent sides. This sliding connection ensures that the guide plates 53 maintain a stable posture when adjusting the material conveying direction, preventing swaying or deviation and ensuring effective material guidance. The bottom ends of the two guide plates 53 are slidably connected to the outside of the conveyor belt 6. When the material moves on the conveyor belt 6, the guide plates 53 contact the material, guiding and restricting the material's conveying direction.

[0028] Two guide plates 53 have guide grooves on their far sides, and two movable columns 56 are externally slidably connected to the far inner walls of the two guide plates 53. When the connecting column 55 moves under the action of the movable block 54, the movable column 56 slides within the guide groove of the guide plate 53. Through interaction with the inner wall of the guide groove, the linear motion of the connecting column 55 is converted into the rotational motion of the guide plate 53 around the rotating shaft 52. Multiple nuts 58 are threadedly connected on their near sides to the far inner walls of the two connecting chambers 51. The threaded connection adjustment method features high adjustment accuracy and good self-locking performance, which can meet the high-precision requirements of different materials for adjusting the angle of the guide plate 53.

[0029] The implementation principle of this application embodiment is as follows: The conveyor belt 6 conveys the processed material to the top of the pallet 24. As the material accumulates, its weight gradually increases, causing the pallet 24 and the connecting plate 23 below to slowly move downwards under the buffering effect of the damping column 22. The damping column 22 provides damping force to make the downward movement smooth. After the pallet 24 moves to the ground, the forklift pulls the pallet 24 away and places a new pallet 24. Due to gravity, the counterweight block 268 fixed on the adjusting plate 266 pulls the moving block 263 upwards through the rope 264 with the limit block 265 as the fulcrum. The upward movement of the moving block 263 causes the connecting block 261 to lift the connecting plate 23, so that the connecting plate 23 returns to its original position. At the same time, the damping rod 262 plays a damping buffering role on the movement of the connecting block 261 and the moving block 263, ensuring the stability of the movement process. This achieves a stable and convenient unloading effect of automatic material reception and automatic resetting of the pallet 24, reducing manual intervention, improving unloading efficiency, and enhancing the smoothness of the overall equipment operation.

[0030] The operator rotates the nuts 58 on the inner walls of the upper and lower ends of the control plate 57. The nuts 58 are threadedly connected to the inner wall of the connecting chamber 51 on the opposite side. The rotation of the nuts 58 releases the control plate 57, causing the control plate 57 to move along the outside of the connecting chamber 51. The movement of the control plate 57 drives the fixedly connected moving block 54 to slide on the inner wall of the connecting chamber 51 on the opposite side. The sliding of the moving block 54 drives the moving column 56 to move through the connecting column 55. The moving column 56 slides in the guide groove on the opposite side of the guide plate 53. Since the guide plate 53 is rotatably connected to the inner wall of the left side of the connecting chamber 51 through the rotating shaft 52, the sliding of the moving column 56 in the guide groove pushes the guide plate 53 to rotate with the rotating shaft 52 as the fulcrum. As the guide plate 53 rotates, its relative position with the conveyor belt 6 changes. The bottom ends of the two guide plates 53 remain slidably connected to the conveyor belt 6, which can adapt to the width of materials of different sizes, accurately guide the material transmission direction, realize flexible adjustment of the transmission direction of materials of different sizes, avoid the material from deviating during transmission, and improve the adaptability of the printing device to various materials.

[0031] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A device for printing patterns on the surface of corrugated cardboard packaging boxes, comprising a base plate, characterized in that: A feeding mechanism is fixedly connected to the top of the base plate, a bracket is fixedly connected to the top of the base plate, two protective plates are fixedly connected to the top of the bracket, a guiding mechanism is fixedly connected to the inner wall of the top of the two protective plates, a conveyor belt is rotatably connected to the adjacent side of the two protective plates, and a printing machine is fixedly connected to the top of the two protective plates. The feeding mechanism includes a fixed chamber, the bottom of which is fixedly connected to the top of the base plate. Multiple damping columns are fixedly connected to the inner wall of the bottom of the fixed chamber. A connecting plate is fixedly connected to the top of the multiple damping columns. A tray is fixedly connected to the top of the connecting plate. A baffle is fixedly connected to the top right side of the fixed chamber. An adjustment component is fixedly connected to the bottom of the connecting plate.

2. The corrugated cardboard packaging box surface pattern printing device as described in claim 1, characterized in that, The guiding mechanism includes two connecting compartments. The bottom ends of the two connecting compartments are fixedly connected to the inner top walls of the two protective plates. A rotating shaft is rotatably connected to the left inner wall of each of the two connecting compartments. A guide plate is fixedly connected to the outside of each of the two rotating shafts. A second movable block is slidably connected to the inner wall of each of the two connecting compartments on opposite sides. A connecting column is fixedly connected to the adjacent side of each of the two second movable blocks. A movable column is fixedly connected to the adjacent side of each of the two connecting columns. A control plate is fixedly connected to the opposite side of each of the two second movable blocks. Nuts are threaded onto the inner walls of the upper and lower ends of the two control plates.

3. The corrugated cardboard packaging box surface pattern printing device as described in claim 1, characterized in that, The adjustment assembly includes multiple connecting blocks. The top ends of the multiple connecting blocks on their adjacent sides are fixedly connected to the bottom ends of the front and rear sides of the connecting plate. A damping rod is fixedly connected to the bottom end of each of the multiple connecting blocks. A moving block is fixedly connected to the far side of each of the multiple connecting blocks. A rope is fixedly connected to the adjacent side of each of the multiple moving blocks. Two limiting blocks are fixedly connected to the front and rear sides of the fixed chamber. Sliding grooves are provided on the inner walls of the front and rear sides of the fixed chamber. A slider is slidably connected to the front and rear sides of the fixed chamber. An adjusting plate is fixedly connected to the far side of each of the two sliders. A counterweight is fixedly connected to the top end of each of the two adjusting plates. A guide strip is fixedly connected to the bottom right side of the fixed chamber.

4. The corrugated cardboard packaging box surface pattern printing device as described in claim 3, characterized in that, The bottom ends of the two ropes are fixedly connected to the left and right sides of the adjusting plate, and the outer sides of the multiple ropes are slidably connected to the inner walls of the multiple limiting blocks.

5. The corrugated cardboard packaging box surface pattern printing device as described in claim 3, characterized in that, The two adjusting plates are slidably connected on their adjacent sides to the front and rear sides of the fixed chamber, and the two counterweights are slidably connected on their adjacent sides to the front and rear sides of the fixed chamber.

6. The corrugated cardboard packaging box surface pattern printing device as described in claim 3, characterized in that, The bottom ends of the plurality of damping rods are fixedly connected to the inner wall of the bottom end of the fixed chamber, and the outer sides of the plurality of movable blocks are slidably connected to the inner walls of the front and rear sides of the fixed chamber.

7. The corrugated cardboard packaging box surface pattern printing device as described in claim 2, characterized in that, The outer sides of the two guide plates are slidably connected to the inner walls of the two connecting compartments on the same side, the bottom ends of the two guide plates are slidably connected to the outside of the conveyor belt, and guide grooves are provided on the far sides of the two guide plates.

8. The corrugated cardboard packaging box surface pattern printing device as described in claim 2, characterized in that, The proximal sides of the plurality of nuts are threadedly connected to the inner walls of the two connecting chambers on opposite sides, and the external sides of the two moving columns are slidably connected to the inner walls of the two guide plates on opposite sides.

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