Corrugated board cutting apparatus

Abstract

The application belongs to the technical field of corrugated board cutting, and specifically discloses a corrugated board cutting-off device, which comprises a base plate, a lower cutter arranged on the base plate, a top plate arranged on the base plate, and an upper cutter arranged on the base plate and sliding up and down between the base plate and the top plate; and an elastic roller for supporting the falling corrugated board is arranged on the upper side of one end of the base plate facing the downstream. The elastic roller is installed on the upper side of one end of the base plate facing the downstream (the corrugated board conveying direction), and after the corrugated board is cut and separated, the elastic roller can form flexible support for the falling corrugated board, so that the corrugated board is prevented from directly impacting the conveying belt or the base plate, and the corner deformation and the corrugation damage caused by the falling impact are reduced. Compared with the traditional non-supporting structure, the elastic roller can buffer the falling impact force, protect the structural integrity of the corrugated board, and is especially suitable for the corrugated board cutting scene with thin thickness or fragile corrugation.

Description

Technical Field

[0001] This application relates to the field of corrugated board cutting technology, and in particular to a corrugated board cutting device. Background Technology

[0002] Corrugated board, also known as corrugated sheet, is a multi-layered paperboard structure made of at least one layer of corrugated medium and one or more layers of flat linerboard bonded together.

[0003] Corrugated board automated production lines typically operate continuously, producing corrugated boards of "unlimited length." To meet customer needs or for further processing, these "unlimited length" corrugated boards usually need to be cut. Currently, this is typically done using hydraulics or cylinders. The cut corrugated boards are then conveyed via a conveyor belt. To prevent the portion of the corrugated board to be cut from being affected by the conveyor belt during the cutting process, the height of the corrugated board to be cut is usually higher than the conveyor belt. However, this causes the cut corrugated board to fall onto the conveyor belt, which can easily damage the board. Utility Model Content

[0004] The purpose of this application is to provide a corrugated board cutting device to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution of this application is as follows: A corrugated board cutting device includes a base plate, a lower blade on the base plate, a top plate mounted on the base plate, and an upper blade that slides vertically between the base plate and the top plate; an elastic roller is provided on the upper side of the downstream end of the base plate to support falling corrugated boards.

[0006] Preferably, a hydraulic assembly is provided on the upper side of the top plate, and a first tool holder is provided on the lower side of the top plate. The upper tool is disposed on the first tool holder, and the hydraulic rod of the hydraulic assembly passes through the substrate from top to bottom and is connected to the first tool holder.

[0007] Preferably, the substrate is provided with a guide post, the first tool holder is provided with a guide sleeve, the guide post and the guide sleeve are slidably fitted together, and the guide post is provided with a first spring, which is located between the guide sleeve and the substrate.

[0008] Preferably, two bases are spaced apart along the width direction of the corrugated plate on the substrate. Each base is provided with a groove, and a pressure rod is slidably disposed in the groove. The two ends of the pressure rod are respectively slidably disposed in the groove. A screw is slidably disposed on the base. The bottom of the screw is connected to the end of the pressure rod, and the top of the screw slides out of the groove and is located outside the base. A nut is screwed on the section of the screw located outside the groove. A compression spring is sleeved on the section of the screw located inside the groove.

[0009] Preferably, it further includes an upper drive roller and a lower drive roller that mesh with each other; the corrugated board to be cut is located between the upper drive roller and the lower drive roller.

[0010] Preferably, it further includes a plurality of support base groups spaced apart along the length direction of the corrugated plate. Each support base group includes two support bases spaced apart along the width direction of the corrugated plate. Each support base is provided with a sliding base. The end of the upper drive roller is rotatably provided with a sliding base. The sliding base is slidably disposed in a sliding groove. An adjusting stud is screwed onto the support base. The bottom of the adjusting stud is located in the sliding groove and is rotatably connected to the sliding base.

[0011] Preferably, the elastic roller includes a sliding column, a sliding sleeve is provided on the base plate, the bottom of the sliding sleeve is connected to the base plate by a screw, a sliding hole is provided at the top of the sliding sleeve, the sliding column slides through the sliding hole, a limiting stop is provided at the lower end of the sliding column, and a second spring is provided inside the sliding sleeve, the second spring being located between the base plate and the limiting stop.

[0012] Preferably, the substrate is disposed on a support platform, and a chip removal groove is provided through the substrate, the chip removal groove being disposed corresponding to the upper blade.

[0013] Preferably, it also includes a conveyor belt for transporting the cut corrugated board.

[0014] The corrugated board cutting device disclosed in this application has an elastic roller installed on the upper side of the downstream (corrugated board conveying direction) end of the substrate. After the corrugated board is cut and separated, the elastic roller can provide flexible support for the falling corrugated board, preventing it from directly impacting the conveyor belt or substrate and reducing edge deformation and flute damage caused by falling impact. Compared with traditional unsupported structures, the elastic roller can buffer the falling impact force and protect the structural integrity of the corrugated board, making it particularly suitable for cutting corrugated boards that are thinner or have more fragile flutes. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the overall structure of this application; Figure 2 This is the main view of the overall structure of this application; Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 This is the main view of the overall structure of this application; Figure 5 for Figure 4 Sectional view of section BB; Figure 6 for Figure 4 Sectional view of the C-section; Figure 7 for Figure 2 A partially enlarged schematic diagram of the cross-sectional view of section DD; Figure 8 This is a cross-sectional view of the elastic roller in this application; Figure 9 This is a partially enlarged schematic diagram of the chip removal groove in this application.

[0016] In the picture: 1. Base plate; 10. Support platform; 11. Column; 12. Pressure rod; 13. Screw; 13. Compression spring; 14. Nut; 15. Base; 16. Slide groove; 2. Top plate; 20. Hydraulic assembly; 21. First cutter holder; 22. Hydraulic rod; 23. Upper cutter; 24. Lower cutter; 3. Conveyor belt; 4. Support seat; 40. Sliding groove; 41. Sliding seat; 42. Adjusting stud; 5. Corrugated plate; 6. Upper drive roller; 7. Lower drive roller; 8. First spring; 80. Guide sleeve; 81. Guide post; 82. Chip removal groove; 9. Sliding sleeve; 90. Sliding column; 91. Roller; 92. Second spring. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0018] like Figure 1-9 As shown, the corrugated board 5 cutting device includes a base plate 1, a lower blade 24 on the base plate 1, a top plate 2 on the base plate 1, and an upper blade 23 that slides up and down between the base plate 1 and the top plate 2; an elastic roller 91 for supporting the falling corrugated board 5 is provided on the upper side of the downstream end of the base plate 1.

[0019] The base plate 1 serves as the basic support structure of the equipment. A lower blade 24 is mounted on its surface. The lower blade 24 is fixed along the width direction of the corrugated plate 5 to form a fixed cutting edge. The top plate 2 is supported above the base plate 1 by the column 11. The upper blade 23 is slidably positioned between the base plate 1 and the top plate 2 to cooperate with the lower blade 24 to complete the cutting action.

[0020] An elastic roller 91 is installed on the upper side of the downstream (corrugated sheet 5 conveying direction) end of the substrate 1. After the corrugated sheet 5 is cut and separated, the elastic roller 91 can provide flexible support for the falling corrugated sheet 5, preventing it from directly impacting the conveyor belt 3 or the substrate 1, and reducing corner deformation and flute damage caused by falling impact. Compared with the traditional unsupported structure, the elastic roller 91 can buffer the falling impact force and protect the structural integrity of the corrugated sheet 5, which is especially suitable for cutting corrugated sheets 5 with thinner thickness or more fragile flutes.

[0021] In some further embodiments, a hydraulic assembly 20 is provided on the upper side of the top plate 2, and a first tool holder 21 is provided on the lower side of the top plate 2. An upper tool 23 is disposed on the first tool holder 21, and the hydraulic rod 22 of the hydraulic assembly 20 passes through the base plate 1 from top to bottom and is connected to the first tool holder 21.

[0022] A hydraulic assembly 20 is installed on the upper side of the top plate 2 to provide cutting power for the upper blade 23; a first blade holder 21 is provided on the lower side of the top plate 2, and the upper blade 23 is clamped and installed on the first blade holder 21 by bolts to ensure that the upper blade 23 is firmly connected to the blade holder.

[0023] The hydraulic rod 22 of the hydraulic assembly 20 passes through the top plate 2 from top to bottom and connects to the first cutter holder 21, driving the upper cutter 23 to slide up and down to complete the cutting. Compared with cylinder drive, the hydraulic drive method has a more stable output force and adjustable cutting force, which can adapt to the cutting needs of corrugated boards 5 of different thicknesses, avoiding incomplete cutting due to insufficient force or blade damage due to excessive force. The hydraulic rod 22 is directly connected to the first cutter holder 21, with a short transmission path and rapid response, ensuring the matching accuracy of the upper cutter 23 and the lower cutter 24, improving the cutting perpendicularity, and reducing burrs on the cut edges of the corrugated board 5.

[0024] In some further embodiments, the substrate 1 is provided with a guide post 81, the first tool holder 21 is provided with a guide sleeve 80, the guide post 81 and the guide sleeve 80 are slidably fitted together, the guide post 81 is provided with a first spring 8, and the first spring 8 is located between the guide sleeve 80 and the substrate 1.

[0025] A guide post 81 is vertically arranged on the substrate 1, and the guide post 81 is perpendicular to the surface of the substrate 1; a guide sleeve 80 is installed on the first tool holder 21 at the position corresponding to the guide post 81, and the guide post 81 and the guide sleeve 80 are slidably fitted together to provide guidance for the up and down sliding of the upper tool 23.

[0026] A first spring 8 is sleeved on the guide post 81, located between the guide sleeve 80 and the base plate 1. The cooperation between the guide post 81 and the guide sleeve 80 can limit the lateral displacement of the upper blade 23 during the cutting process, ensuring that the upper blade 23 always moves in the vertical direction and guaranteeing the straightness of the cutting. The first spring 8 is compressed when the hydraulic component 20 drives the upper blade 23 to move downward for cutting. After the cutting is completed, the spring's return force assists the upper blade 23 to return to its original position, reducing the return load on the hydraulic component 20 and extending the service life of the hydraulic system. At the same time, the spring's buffering effect can reduce the impact vibration when the upper blade 23 moves downward, preventing the equipment from becoming loose due to long-term high-frequency vibration.

[0027] In some further embodiments, two bases 15 are spaced apart on the substrate 1 along the width direction of the corrugated plate 5. Each base 15 is provided with a groove 16. A pressure rod 12 is slidably disposed in the groove 16. The two ends of the pressure rod 12 are respectively slidably disposed in the groove 16. A screw 13 is slidably disposed on the base 15. The bottom of the screw 13 is connected to the end of the pressure rod 12. The top of the screw 13 slidably extends out of the groove 16 and is located outside the base 15. A nut 14 is screwed onto the section of the screw 13 located outside the groove 16. A compression spring 133 is sleeved on the section of the screw 13 located inside the groove 16.

[0028] Two bases 15 are provided on the substrate 1 at intervals along the width direction of the corrugated plate 5, and the bases 15 are symmetrically distributed on both sides of the conveying path of the corrugated plate 5.

[0029] Each base 15 has a groove 16 extending perpendicular to the surface of the substrate 1. The two ends of the pressure rod 12 are respectively embedded in the grooves 16 of the bases 15 on both sides, allowing it to slide up and down along the grooves 16. A screw 13 passes through the base 15, with its bottom connected to the end of the pressure rod 12 and its top extending out of the groove 16 and screwed with a nut 14. Rotating the nut 14 adjusts the extension length of the screw 13, thereby moving the pressure rod 12 up and down, pressing it firmly against the surface of the corrugated board 5 to be cut. The pressure rod 12 can fix the corrugated board 5 before cutting, preventing displacement or warping during cutting and ensuring accurate cutting. The adjustable pressure rod 12 design on both sides can accommodate the fixing needs of corrugated boards 5 of different widths, while the compression spring 133 ensures a flexible contact between the pressure rod 12 and the corrugated board 5, thus avoiding damage to the surface of the corrugated board 5.

[0030] In some further embodiments, an upper drive roller 6 and a lower drive roller 7 that mesh with each other are also included; the corrugated board 5 to be cut is located between the upper drive roller 6 and the lower drive roller 7.

[0031] The equipment also includes an upper drive roller 6 and a lower drive roller 7 that mesh with each other. The corrugated sheet 5 to be cut passes between the two rollers and is conveyed to the cutting area by the friction of the rollers. The coordinated conveying of the upper drive roller 6 and the lower drive roller 7 can more accurately control the feed speed and position of the corrugated sheet 5, ensuring the accuracy of the cutting length. At the same time, the clamping and conveying of the corrugated sheet 5 by the two rollers can reduce the shaking of the corrugated sheet 5 during the conveying process, so that the position to be cut is stably aligned with the lower blade 24, improving the cutting accuracy. It is especially suitable for continuous cutting scenarios in automated production lines, ensuring the consistency of the length of each section of corrugated sheet 5.

[0032] In some further embodiments, a plurality of support seats 4 are spaced apart along the length of the corrugated plate 5. Each support seat 4 includes two support seats 4 spaced apart along the width of the corrugated plate 5. A sliding seat 41 is provided in the support seat 4. The end of the upper drive roller 6 is rotatably provided with the sliding seat 41. The sliding seat 41 is slidably disposed in the sliding groove 40. An adjusting stud 42 is screwed on the support seat 4. The bottom of the adjusting stud 42 is located in the sliding groove 40 and is rotatably connected to the sliding seat 41.

[0033] The equipment is provided with several sets of support seats 4 at intervals along the length of the corrugated plate 5. Each set of support seats 4 includes two support seats 4 at intervals along the width of the corrugated plate 5.

[0034] A sliding groove 40 is formed inside the support base 4. The end of the upper drive roller 6 is rotatably connected to the sliding seat 41 via a bearing. The sliding seat 41 is embedded in the sliding groove 40 and can slide up and down. An adjusting stud 42 is screwed onto the support base 4. The bottom of the adjusting stud 42 extends into the sliding groove 40 and is rotatably connected to the sliding seat 41. By rotating the adjusting stud 42, the sliding seat 41 can be moved up and down, thereby adjusting the distance between the upper drive roller 6 and the lower drive roller 7 to meet the conveying requirements of corrugated sheets 5 of different thicknesses.

[0035] The multiple sets of support seats 4 can ensure that the upper drive roller 6 is subjected to uniform force, avoid the middle sagging caused by the excessive length of the roller, ensure that the conveying force is consistent at each width position of the corrugated board 5, reduce the skew during the conveying process, and indirectly improve the cutting accuracy.

[0036] In some further embodiments, the elastic roller 91 includes a sliding post 90, a sliding sleeve 9 is provided on the base plate 1, the bottom of the sliding sleeve 9 is connected to the base plate 1 by a screw, the top of the sliding sleeve 9 is provided with a sliding hole, the sliding post 90 slides through the sliding hole, the lower end of the sliding post 90 is provided with a limiting stop, and a second spring 92 is provided inside the sliding sleeve 9, the second spring 92 is located between the base plate 1 and the limiting stop.

[0037] The elastic roller 91 includes a sliding post 90, and a sliding sleeve 9 is installed on the base plate 1. The bottom of the sliding sleeve 9 is fixed to the base plate 1 by a threaded connection. The bottom of the sliding sleeve 9 is open and the top is provided with a sliding hole. The sliding post 90 passes through the sliding hole to achieve sliding engagement.

[0038] A limiting stop is provided at the lower end of the sliding column 90 to prevent it from dislodging from the sliding sleeve 9. A second spring 92 is installed inside the sliding sleeve 9, located between the base plate 1 and the limiting stop. When the corrugated sheet 5 is cut and falls onto the elastic roller 91, the sliding column 90 slides downward under pressure, and the second spring 92 is compressed. The elastic deformation of the second spring 92 absorbs the impact force of the fall, achieving flexible support. After the corrugated sheet 5 is conveyed away by the conveyor belt 3, the spring force pushes the sliding column 90 back to its original position, waiting for the next support. This elastic structure can automatically adjust the support force according to the weight of the corrugated sheet 5, avoiding the squeezing damage to the corrugated sheet 5 caused by rigid support. At the same time, the threaded sliding sleeve 9 is easy to disassemble and replace, adapting to different elasticity requirements.

[0039] In some further embodiments, the substrate 1 is disposed on the support platform 10, and a chip removal groove 82 is provided through the substrate 1, which is provided corresponding to the upper blade 23.

[0040] The substrate 1 is mounted on the support platform 10. A chip removal groove 82 is formed through the substrate 1, and its position corresponds to the upper blade 23. The chip removal groove 82 can collect paper scraps and debris generated during the cutting process, preventing debris from accumulating on the surface of the substrate 1 and affecting the conveying of the corrugated board 5 or the cutting accuracy of the next cut. The debris falls through the chip removal groove 82 into a collection device (such as a waste bin) under the support substrate 1, which facilitates centralized cleaning, keeps the working area of ​​the equipment clean, and reduces the risk of equipment jamming due to debris residue. This is especially suitable for scenarios with long-term continuous production.

[0041] In some further embodiments, a conveyor belt 3 for conveying the cut corrugated board 5 is also included.

[0042] The equipment also includes a conveyor belt 3, which is located downstream of the substrate 1 and connected to the elastic rollers 91. This conveyor belt 3 transports the cut corrugated board 5 to the next process. The conveyor belt 3 receives the corrugated board 5 after it has been buffered by the elastic rollers 91, achieving automated transfer of the cut corrugated board 5 through continuous conveying without manual intervention, thus improving production efficiency. The precise fit between the conveyor belt 3 and the elastic rollers 91 ensures a smooth transition of the corrugated board 5, preventing jamming or secondary drops at the beginning of the conveying process, further protecting the structure of the corrugated board 5. Simultaneously, it forms a complete automated production line with the upstream drive rollers and cutting structure, meeting the needs of large-scale continuous production.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

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