A cardboard bundling device for corrugated box production

Abstract

The invention relates to the technical field of bundling devices, and specifically discloses a cardboard bundling device for corrugated paperboard box production, comprising a frame, a pressing mechanism, a leveling mechanism, a clamping mechanism and a protective mechanism, wherein the clamping mechanism comprises two groups of clamping components, a driving component 1, a driving component 2 and a driving component 3, each group of clamping components comprises a clamping plate 1 and a clamping plate 2, and the protective mechanism comprises a protective plate and a conveying component, the protective plate is arranged in an L shape, and a positioning plate is provided at one end of the clamping plate 1 and the clamping plate 2 facing the frame, and a positioning groove is provided on each positioning plate; before bundling the cardboard, the present invention can protect the bundling position of the cardboard through the cooperation of the clamping mechanism and the protective mechanism to avoid subsequent damage to the cardboard, and in addition, can detect the pressing pressure required for cardboards of different hardness and fluffiness, so that pressing can be performed accurately according to the measured pressure later to avoid excessive pressing or easy loosening after bundling.

Description

Technical Field

[0001] The invention relates to the technical field of binding devices, and in particular to a cardboard binding device for producing corrugated paper boxes. Background Art

[0002] Corrugated paper is a main material for commodity transportation packaging. It is widely used in the packaging and transportation of finished products because of its light weight, low price, large-scale production of various sizes, small storage space before use, and printing of various patterns. In the process of corrugated box production, in order to facilitate the transportation and storage of corrugated boxes, the corrugated boxes are folded and bundled into bundles. In the process of bundling the corrugated boxes, the corners of the corrugated boxes need to be aligned to facilitate the subsequent bundling.

[0003] The patent document with authorization announcement number CN117416558B discloses a cardboard bundling device for corrugated box production, including a cardboard bundling machine, and a driving mechanism is arranged at the top of the bundling frame of the cardboard bundling machine, and a pressing mechanism is arranged at the U-shaped bottom end of the bundling frame of the cardboard bundling machine, and the pressing mechanism is fixedly connected to the driving mechanism, and a protective mechanism is fixedly installed at the bottom of the pressing mechanism, and the protective mechanism plays a protective role on the pressing mechanism, and is used to protect the cardboard and prevent the pressing mechanism from causing indentation or damage to the cardboard. The patent presses the cardboard through the self-gravity of the support plate, and the self-weight of the support plate can be adjusted by a counterweight block, so that cardboards of different hardness and different fluffiness can be pressed. At the same time, when the cardboard is pressed, it can be protected by a rubber pad with honeycomb holes at the bottom, thereby avoiding indentation and damage to the cardboard after pressing.

[0004] When the weight of the support plate is adjusted by the counterweight, the weight of the counterweight is constant, so it is impossible to accurately apply pressure to the cardboard, which may result in insufficient or excessive pressure. In addition, when the cardboard is bundled, the edges of the cardboard are easily rubbed and compressed by the rope, causing wear and affecting the quality of the cardboard. Summary of the invention

[0005] The present invention provides a cardboard bundling device for corrugated box production, aiming to solve the problem in the related art that it is impossible to accurately apply pressure to the cardboard, which may result in insufficient or excessive pressing force. In addition, when the cardboard is bundled, the edges of the cardboard are easily rubbed and compressed by the rope, thereby causing wear and affecting the quality of the cardboard.

[0006] The present invention discloses a cardboard bundling device for producing corrugated paperboards, comprising a frame, a pressing mechanism for pressing the cardboard, and a leveling mechanism for adjusting the cardboard, and a clamping mechanism and a protective mechanism are also provided on the frame;

[0007] The clamping mechanism includes two groups of clamping assemblies, a driving assembly 1, a driving assembly 2 and a driving assembly 3, which are symmetrically arranged along the width direction of the frame. Each group of clamping assemblies includes a clamping plate 1 and a clamping plate 2 arranged up and down. The driving assembly 1 is used to drive the two groups of clamping assemblies to move synchronously along the width direction of the frame. The driving assembly 2 is used to drive the clamping plate 1 or the clamping plate 2 to move up and down, and the two clamping plates 1 or the two clamping plates 2 in the two groups of clamping assemblies move synchronously. The driving assembly 3 is used to drive the clamping assemblies to move along the length direction of the frame.

[0008] The protective mechanism includes a protective plate for protecting the edges of the cardboard and a conveying assembly for conveying the protective plate. The protective plate is arranged in an L shape. A positioning plate is provided at one end of the first clamping plate and the second clamping plate facing the frame. The first clamping plate is rotatably connected to the corresponding positioning plate, and a driving member is provided on the first clamping plate for driving the positioning plate connected thereto to rotate. Each positioning plate is provided with a positioning groove into which one end of the protective plate can be inserted.

[0009] Before bundling the cardboard, the binding position of the cardboard can be protected by the cooperation of the clamping mechanism and the protection mechanism to avoid subsequent damage to the cardboard. In addition, the pressing pressure required for cardboards of different hardness and fluffiness can be detected so that the cardboard can be pressed accurately according to the measured pressure to avoid excessive pressing or loosening after bundling.

[0010] Preferably, a fixed frame is fixed on the frame, and a driving component 1 includes a motor 1, a screw 1 and a movable frame. The motor 1 is arranged on the fixed frame, the screw 1 is horizontally arranged along the width direction of the frame and is connected to the output end of the motor 1, the movable frame is threadedly matched with the screw 1, and the clamping plate 1 and the clamping plate 2 are both slidably matched with the movable frame along the longitudinal direction.

[0011] Preferably, drive component 2 includes a lifting plate, a second motor and a second screw. The lifting plate is longitudinally slidably matched with the fixed frame. The second motor is arranged at the upper end of the fixed frame. The second screw is longitudinally rotatably arranged on the fixed frame, and the upper end is connected to the output end of the second motor. The lifting plate is threadably matched with the second screw. The first splint or the second splint and the lifting plate are relatively fixed in the longitudinal direction and slide relatively in the horizontal direction.

[0012] Preferably, the drive assembly 2 is configured as two groups, and the two groups of drive assembly 2 independently drive the splint 1 and the splint 2 to move up and down. The two lifting plates in the two groups of drive assembly 2 are arranged up and down along the height direction of the fixed frame, and each lifting plate is threadedly matched with the corresponding screw rod 2 and movably connected with the screw rod 2 in the other group of drive assembly 2.

[0013] By using two sets of driving components 2 to independently drive the clamping plate 1 and the clamping plate 2 to move up and down, the clamping plate 1 and the clamping plate 2 can be moved up and down synchronously, or moved toward or away from each other synchronously.

[0014] Preferably, the upper ends of splint 1 and splint 2 are respectively provided with slide groove 1 along their own length direction, and the lower end of the lifting plate is provided with slide groove 2 along its length direction. Splint 1 and splint 2 are respectively arranged in a cross shape with the lifting plate, and sliders are respectively provided between splint 1 and splint 2 and the corresponding lifting plates. The lower end of the slider is slidably matched with the corresponding splint 1 or splint 2 through slide groove 1, and the upper end of the slider is slidably matched with the corresponding lifting plate through slide groove 2.

[0015] The up and down movement of the lifting plate can drive the connected splint 1 or splint 2 to move up and down synchronously. When the driving component 1 drives the clamping component to move along the width direction of the frame, splint 1 and splint 2 will move along the corresponding slide groove 1 relative to the lifting plate. When the driving component 3 drives the clamping component to move along the length direction of the frame, splint 1 and splint 2 will move along the corresponding slide groove 2 relative to the lifting plate.

[0016] Preferably, the movable frame includes a movable block and two telescopic blocks slidably arranged on both sides of the movable block, the movable block is threadedly matched with a screw rod, and the driving component three includes two groups of cylinders one, and the output ends of the two groups of cylinders one are respectively connected to the telescopic blocks on both sides, so that the two telescopic blocks can approach or move away from each other, and each telescopic block is provided with a guide groove along its height direction, and the splint one and the splint two are slidably matched with the telescopic block on the corresponding side through the guide groove.

[0017] Preferably, the pressing mechanism includes cylinder 2 and a pressing block, there are two pressing blocks, and the lower end of each pressing block forms a pressing surface, cylinder 2 has two groups, and the output ends of the two groups of cylinder 2 are respectively connected to the two pressing blocks.

[0018] Preferably, the leveling mechanism is provided in two groups, and the two groups of leveling mechanisms are symmetrically arranged at both ends of the frame along the width direction of the frame, and each group of leveling mechanisms includes cylinder three and a push plate, cylinder three is provided on the frame, and the output end extends horizontally toward the frame, and the push plate is longitudinally arranged and connected to the output end of cylinder three.

[0019] The cardboards placed on the frame can be adjusted by bringing the push plates in the two sets of leveling mechanisms closer to each other, so that the cardboards are arranged neatly, which is convenient for subsequent pressing and bundling.

[0020] Preferably, the conveying assembly includes a conveying frame arranged on the frame, a conveying belt arranged on the conveying frame, and a motor three for driving the conveying belt to rotate reciprocally.

[0021] Preferably, the frame is also provided with an adjustment component for adjusting the distance between the two lower pressure blocks, and the adjustment component includes a motor four, a screw three and two drive blocks. The motor four is arranged on the frame, the screw three is horizontally arranged along the width direction of the frame and is connected to the output end of the motor four, and two threads with opposite rotation directions are provided at both ends of the screw three. The two drive blocks are respectively matched with the threads of the screw three through the threads at both ends, and the upper ends of the two groups of cylinders two are respectively connected to the two drive blocks.

[0022] The distance between the two pressing blocks is adjusted by adjusting the components, so that the pressing blocks can press down cardboards of different sizes, thereby improving the applicability of the device.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention is provided with a clamping mechanism and a protective mechanism, which can install the protective plates on the upper and lower edges of the cardboard by moving the first and second clamping plates before bundling the cardboard, so as to protect the position where the cardboard needs to be bundled later, and prevent the edges of the cardboard from being worn by the friction and pressure of the rope, so as to ensure the quality of the cardboard.

[0025] 2. Before the cardboards of different hardness and fluffiness are compressed, the present invention pulls out a portion of one of the cardboards, and in the process of the downward compression mechanism compressing the cardboards, the clamping mechanism continues to pull the cardboard to one side until the cardboard can no longer be pulled out, thereby obtaining precise compression pressure. By precisely applying compression pressure to the cardboard, it is possible to avoid excessive compression of the cardboard or the phenomenon that the cardboard is easily loosened after bundling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0028] Figure 3 It is a schematic structural diagram of the clamping mechanism of the present invention from another viewing angle.

[0029] Figure 4 It is a schematic diagram of the assembly structure of the clamping plate 1 and the lifting plate of the present invention.

[0030] Reference numerals:

[0031] 1. Frame; 11. Fixed frame; 12. Cylinder 2; 13. Pressing block; 14. Cylinder 3; 15. Push plate; 16. Motor 4; 17. Screw 3; 18. Driving block; 21. Clamp 1; 22. Clamp 2; 23. Motor 1; 24. Screw 1; 25. Moving frame; 251. Moving block; 252. Telescopic block; 2521. Guide groove; 26. Lifting plate; 261. Slide 2; 27. Motor 2; 28. Screw 2; 29. ​​Slider; 31. Protective plate; 32. Positioning plate; 321. Positioning groove; 33. Driving member; 34. Conveyor frame; 35. Conveyor belt; 36. Motor 3; 41. Cylinder 1. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, and 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 be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] like Figures 1 to 4 As shown, a cardboard bundling device for corrugated box production of the present invention comprises a frame 1, on which a pressing mechanism for pressing the cardboard and a leveling mechanism for adjusting the cardboard are provided. The frame 1 is also provided with a clamping mechanism and a protective mechanism.

[0034] The pressing mechanism includes a cylinder 2 12 and a pressing block 13. There are two pressing blocks 13, and the lower end of each pressing block 13 forms a pressing surface. The cylinder 2 12 has two groups, and the output ends of the two groups of cylinder 2 12 are respectively connected to the two pressing blocks 13. The leveling mechanism is set to two groups, and the two groups of leveling mechanisms are symmetrically arranged at the two ends of the frame 1 along the width direction of the frame 1. Each group of leveling mechanisms includes a cylinder 3 14 and a push plate 15. The cylinder 3 14 is arranged on the frame 1, and the output end extends horizontally toward the frame 1. The push plate 15 is longitudinally arranged and connected to the output end of the cylinder 3 14. By bringing the push plates 15 in the two groups of leveling mechanisms close to each other, the cardboard can be adjusted so that the cardboard is neatly arranged, which is convenient for subsequent pressing and bundling.

[0035] The clamping mechanism includes two groups of clamping components, a driving component 1, a driving component 2 and a driving component 3, which are symmetrically arranged along the width direction of the frame 1. Each group of clamping components includes a clamping plate 1 21 and a clamping plate 2 22 arranged up and down. The driving component 1 is used to drive the two groups of clamping components to move synchronously along the width direction of the frame 1. The driving component 2 is used to drive the clamping plate 1 21 or the clamping plate 22 to move up and down, and the two clamping plates 1 21 or the two clamping plates 22 in the two groups of clamping components move synchronously. The driving component 3 is used to drive the two groups of clamping components to move against each other. The protective mechanism includes a protective plate 31 for protecting the edges of the cardboard and a conveying assembly for conveying the protective plate 31. The protective plate 31 is arranged in an L shape. The clamping plate 1 21 and the clamping plate 2 22 are provided with a positioning plate 32 at one end facing the frame 1. The clamping plate 1 21 is rotatably connected to the corresponding positioning plate 32, and the clamping plate 1 21 is provided with a driving member 33 for driving the positioning plate 32 connected thereto to rotate. Each positioning plate 32 is provided with a positioning groove 321 into which one end of the protective plate 31 can be inserted.

[0036] Specifically, the cardboards to be bundled are placed on the frame 1, and the cardboards are adjusted by the leveling mechanism so that the cardboards are neatly arranged, and then the cardboards are pressed by the pressing mechanism. After the pressing is completed, the driving component three drives the clamping plate 1 21 and the clamping plate 22 to move along the length direction of the frame 1, so that the clamping plate 1 21 and the clamping plate 22 are moved to the top of the conveying component, and then the driving component two drives the clamping plate 1 21 and the clamping plate 22 to move downward, so that one end of the protective plate 31 located on the conveying component is inserted into the positioning groove 321 provided on the positioning plate 32, and then, with the cooperation of the driving component one, the driving component two and the driving component three, the clamping plate 1 21 and the clamping plate 22 are driven to move, so that the positioning plate 32 connected to the clamping plate 1 21 is moved to the upper edge of the cardboard that needs to be bundled later, and at the same time, the positioning plate 32 connected to the clamping plate 2 The positioning plate 32 connected to the first clamping plate 22 is moved to the lower edge of the cardboard where it is needed to be bundled later, and then the positioning plate 32 connected to the first clamping plate 21 is driven to rotate by the driving member 33, and the protective plate 31 inserted into the positioning plate 32 is driven to rotate synchronously, so that the protective plate 31 can be buckled on the upper edge of the cardboard. At the same time, through the movement of the second clamping plate 22, the positioning plate 32 located at the lower edge can buckle the corresponding protective plate 31 on the lower edge of the cardboard, and then through the cooperation of the driving component 1, the driving component 2, and the driving component 3, the first clamping plate 21 and the second clamping plate 22 are detached from the protective plate 31 and reset. At this time, the cardboard can be bundled. By placing the protective plate 31 at the position where the cardboard needs to be bundled later, the edge of the cardboard can be protected to prevent the cardboard from being damaged and affecting the subsequent use.

[0037] In addition, when pressing cardboards of different hardness and fluffiness, the lengths that the cylinder 12 in the pressing mechanism needs to be extended and retracted may be different. If the cylinder 12 is extended too long, it is easy to cause excessive pressure on the cardboard. If the cylinder 12 is extended too short, the cardboard cannot be pressed into place, and the cardboard is easy to loosen after bundling. Therefore, in order to ensure accurate pressing of the cardboard, the length that the cylinder 12 needs to be extended and retracted can be adjusted after each replacement of cardboards of different hardness and fluffiness. Specifically, the first batch of cardboards after replacement is placed on the frame 1, the cardboards are arranged neatly by the leveling mechanism, and then one of the cardboards is partially pulled out, and then the cylinder 12 drives the pressing block 13 to move downward to press the cardboard. In this process , through the cooperation of the driving component 1 and the driving component 2, the clamping plate 1 21 and the clamping plate 2 22 in the same group of clamping components are brought close to each other to clamp the cardboard pulled out, and then the clamping component is driven by the driving component 3 to move along the length direction of the frame 1, and the clamped cardboard is driven to move synchronously, so that the cardboard continues to be pulled out, until the cardboard can no longer be pulled out, at this time, the pressing block 13 stops moving, and the required extension length when the pressing mechanism presses the cardboard of the hardness and fluffiness can be obtained, and the cardboard of the specification can be pressed and bundled according to this length. Through the precise control of the pressing mechanism, excessive pressing on the cardboard or the loosening of the cardboard after bundling can be avoided, so as to improve the subsequent bundling effect.

[0038] In some embodiments, a fixed frame 11 is fixed on the frame 1, and a driving component 1 includes a motor 23, a screw 24 and a movable frame 25. The motor 23 is arranged on the fixed frame 11, and the screw 24 is horizontally arranged along the width direction of the frame 1 and connected to the output end of the motor 23. The movable frame 25 is threadedly matched with the screw 24, and the splint 1 21 and the splint 22 are both slidably matched with the movable frame 25 along the longitudinal direction.

[0039] Specifically, Figures 1 to 3 As shown, when the starting motor 23 drives the screw 24 to rotate, the threaded cooperation between the screw 24 and the movable frame 25 can drive the movable frame 25 to move along the axial direction of the screw 24 in a direction away from or close to the frame 1, thereby driving the splint 1 21 and the splint 22 that are longitudinally slidably matched with the movable frame 25 to move synchronously.

[0040] In some embodiments, the driving assembly 2 is set to two groups, and the two groups of driving assemblies 2 independently drive the clamping plate 1 21 and the clamping plate 2 22 to move up and down. Each group of driving assembly 2 includes a lifting plate 26, a motor 27 and a screw 28. The motor 27 is arranged at the upper end of the fixed frame 11, and the screw 28 is longitudinally rotated on the fixed frame 11, and the upper end is connected to the output end of the motor 27. The two lifting plates 26 are arranged up and down along the height direction of the fixed frame 11, and are respectively matched with the fixed frame 11 longitudinally slidingly. Each lifting plate 26 is threadedly matched with the corresponding screw 2 28, and is movably connected with the screw 2 28 in another group of driving assembly 2. The upper ends of the splint 1 21 and the splint 22 are respectively provided with a slide groove 1 along their own length direction, and the lower end of the lifting plate 26 is provided with a slide groove 261 along its length direction. The splint 1 21 and the splint 22 are respectively arranged in a cross shape with the lifting plate 26, and a slider 29 is respectively provided between the splint 1 21 and the splint 22 and the corresponding lifting plate 26. The lower end of the slider 29 slides with the corresponding splint 1 21 or splint 22 through the slide groove 1, and the upper end of the slider 29 slides with the corresponding lifting plate 26 through the slide groove 261, so that the splint 1 21 or the splint 22 and the lifting plate 26 are relatively fixed in the longitudinal direction and slide relatively in the horizontal direction.

[0041] Specifically, Figures 1 to 4 As shown, when the starting motor 27 drives the screw 28 to rotate, the screw 28 can cooperate with the thread of the lifting plate 26 to drive the lifting plate 26 to move up and down, and drive the corresponding clamping plate 1 21 or clamping plate 22 to move up and down, so that the clamping plate 1 21 and the clamping plate 22 can be independently driven to move up and down by two groups of driving components 2. When the clamping plate 1 21 and the clamping plate 22 in the same group of clamping components are close to each other, the drawn paper can be clamped, so that in the process of the clamping component moving along the length direction of the frame 1, the clamped cardboard can be driven to continue to be drawn out, and the extension length required for the cylinder 2 12 to press the cardboard is adjusted.

[0042] In some embodiments, the moving frame 25 includes a moving block 251 and two telescopic blocks 252. The two telescopic blocks 252 are respectively arranged on both sides of the moving block 251 and slide with the moving block 251 in the horizontal direction. The moving block 251 is threadedly matched with the screw rod 24. The driving component three includes two groups of cylinders 41. The output ends of the two groups of cylinders 41 are respectively connected to the telescopic blocks 252 on both sides, so that the two telescopic blocks 252 can approach or move away from each other. Each telescopic block 252 is provided with a guide groove 2521 along its height direction. The splint 1 21 and the splint 22 in the same group of clamping components are both slidably matched with the telescopic block 252 on the corresponding side through the guide groove 2521.

[0043] Specifically, Figures 1 to 3As shown, starting one of the groups of cylinders 41 can drive the telescopic block 252 connected thereto to move along the length direction of the frame 1, and drive the clamping assembly that slides with it to move synchronously. Starting two groups of cylinders 41 at the same time can drive the two telescopic blocks 252 to move closer to or away from each other, and drive the two groups of clamping assemblies that slide with the two telescopic blocks 252 to move closer to or away from each other.

[0044] In some embodiments, the conveying assembly includes a conveying frame 34 disposed on the frame 1, a conveying belt 35 disposed on the conveying frame 34, and a motor 36 for driving the conveying belt 35 to reciprocate.

[0045] Specifically, Figure 1 and Figure 2 As shown, in this embodiment, the conveying components are provided in two groups, and the two groups of conveying components are symmetrically arranged on both sides of the frame 1 along the width direction of the frame 1, and are respectively used to convey the protective plates 31 to both sides of the cardboard. There are two conveyor belts 35 in each group of conveying components, and they are arranged up and down along the height direction of the conveying frame 34. In the process of the two conveyor belts 35 in the same group of conveying components conveying the protective plates 31 to the cardboard, the protective plates 31 on the upper conveyor belt 35 can be buckled on the upper edge of the cardboard through the positioning plate 32 connected to the clamp plate 1 21, and the protective plates 31 on the lower conveyor belt 35 can be installed on the lower edge of the cardboard through the positioning plate 32 connected to the clamp plate 22.

[0046] In some embodiments, the frame 1 is also provided with an adjustment component for adjusting the distance between the two lower pressure blocks 13, and the adjustment component includes a motor four 16, a screw three 17 and two drive blocks 18. The motor four 16 is arranged on the frame 1, and the screw three 17 is horizontally arranged along the width direction of the frame 1 and connected to the output end of the motor four 16. Two ends of the screw three 17 are provided with two threads with opposite rotation directions. The two drive blocks 18 are respectively matched with the threads of the screw three 17 through the threads at both ends, and the upper ends of the two groups of cylinders two 12 are respectively connected to the two drive blocks 18.

[0047] Specifically, Figure 1 As shown, when the starting motor 4 16 drives the screw 3 17 to rotate, it can drive the two driving blocks 18 that cooperate with the screw 3 17 threads to move along the axial direction of the screw 3 17. Since the rotation directions of the two threads are opposite, the two driving blocks 18 can approach or move away from each other, and drive the two groups of cylinders 2 12 connected thereto to approach or move away from each other, thereby driving the two pressing blocks 13 to approach or move away from each other, so that the distance between the two pressing blocks 13 changes, so that the pressing blocks 13 can press down cardboards of different sizes, thereby improving the applicability of the device.

[0048] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cardboard bundling device for corrugated box production, comprising a frame, a pressing mechanism for pressing the cardboard, and a leveling mechanism for adjusting the cardboard, characterized in that: The frame is also provided with a clamping mechanism and a protective mechanism; The clamping mechanism includes two groups of clamping assemblies, a driving assembly 1, a driving assembly 2 and a driving assembly 3, which are symmetrically arranged along the width direction of the frame. Each group of clamping assemblies includes a clamping plate 1 and a clamping plate 2 arranged up and down. The driving assembly 1 is used to drive the two groups of clamping assemblies to move synchronously along the width direction of the frame. The driving assembly 2 is used to drive the clamping plate 1 or the clamping plate 2 to move up and down, and the two clamping plates 1 or the two clamping plates 2 in the two groups of clamping assemblies move synchronously. The driving assembly 3 is used to drive the clamping assemblies to move along the length direction of the frame. The protection mechanism includes a protection plate for protecting the edge of the cardboard and a conveying assembly for conveying the protection plate. The protection plate is L-shaped. The first and second clamping plates are provided with positioning plates at one end facing the frame. The first clamping plate is rotatably connected to the corresponding positioning plate, and the first clamping plate is provided with a driving member for driving the positioning plate connected thereto to rotate. Each positioning plate is provided with a positioning groove into which one end of the protection plate can be inserted. A fixed frame is fixed on the frame, and the second driving component includes a lifting plate, a second motor and a second screw. The lifting plate and the fixed frame are longitudinally slidably matched, the second motor is arranged at the upper end of the fixed frame, the second screw is longitudinally rotatably arranged on the fixed frame, and the upper end is connected to the output end of the second motor, the lifting plate and the second screw are threadedly matched, the first clamping plate or the second clamping plate and the lifting plate are relatively fixed in the longitudinal direction and relatively slide in the horizontal direction; The driving component 2 is set to two groups, and the two groups of driving components 2 independently drive the clamping plate 1 and the clamping plate 2 to move up and down. The two lifting plates in the two groups of driving components 2 are arranged up and down along the height direction of the fixed frame, and each lifting plate is threadedly matched with the corresponding screw rod 2 and movably connected with the screw rod 2 in the other group of driving components 2.

2. A cardboard bundling device for corrugated box production according to claim 1, characterized in that: The driving component 1 includes a motor 1, a screw 1 and a movable frame. The motor 1 is arranged on the fixed frame. The screw 1 is horizontally arranged along the width direction of the frame and is connected to the output end of the motor 1. The movable frame is threadedly matched with the screw 1. The clamping plate 1 and the clamping plate 2 are both slidably matched with the movable frame along the longitudinal direction.

3. A cardboard bundling device for corrugated box production according to claim 2, characterized in that: The upper ends of splint 1 and splint 2 are respectively provided with a slide groove 1 along their own length direction, and the lower end of the lifting plate is provided with a slide groove 2 along its length direction. Splint 1 and splint 2 are respectively arranged in a cross shape with the lifting plate, and sliders are respectively provided between splint 1 and splint 2 and the corresponding lifting plates. The lower end of the slider is slidably matched with the corresponding splint 1 or splint 2 through the slide groove 1, and the upper end of the slider is slidably matched with the corresponding lifting plate through the slide groove 2.

4. A cardboard bundling device for corrugated box production according to claim 2, characterized in that: The moving frame includes a moving block and two telescopic blocks slidably arranged on both sides of the moving block. The moving block is threadedly matched with a screw rod. A driving component three includes two groups of cylinders one. The output ends of the two groups of cylinders one are respectively connected to the telescopic blocks on both sides, so that the two telescopic blocks can approach or move away from each other. Each telescopic block is provided with a guide groove along its height direction. Both the splint one and the splint two are slidably matched with the telescopic blocks on the corresponding side through the guide groove.

5. A cardboard bundling device for corrugated box production according to claim 1, characterized in that: The pressing mechanism includes cylinder 2 and a pressing block. There are two pressing blocks, and the lower end of each pressing block forms a pressing surface. Cylinder 2 has two groups, and the output ends of the two groups of cylinders are respectively connected to the two pressing blocks.

6. A cardboard bundling device for corrugated box production according to claim 1, characterized in that: The leveling mechanism is provided in two groups, and the two groups of leveling mechanisms are symmetrically arranged at both ends of the frame along the width direction of the frame. Each group of leveling mechanisms includes cylinder three and a push plate. Cylinder three is provided on the frame, and the output end extends horizontally toward the frame. The push plate is longitudinally arranged and connected to the output end of cylinder three.

7. A cardboard bundling device for corrugated box production according to claim 1, characterized in that: The conveying assembly comprises a conveying frame arranged on a frame, a conveying belt arranged on the conveying frame, and a motor three for driving the conveying belt to reciprocate.

8. A cardboard bundling device for corrugated box production according to claim 5, characterized in that: The frame is also provided with an adjustment component for adjusting the distance between the two lower pressure blocks, and the adjustment component includes a motor four, a screw rod three and two drive blocks. The motor four is arranged on the frame, the screw rod three is horizontally arranged along the width direction of the frame and is connected to the output end of the motor four, and two threads with opposite rotation directions are provided at both ends of the screw rod three. The two drive blocks are respectively matched with the threads of the screw rod three through the threads at both ends, and the upper ends of the two groups of cylinders two are respectively connected to the two drive blocks.

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