A paperboard slotting device for carton processing

Abstract

The application discloses a paperboard slotting device for carton processing, and relates to the technical field of paperboard slotting, which comprises a clamping assembly movably arranged on an operation table, the clamping assembly comprises two clamping plates oppositely arranged, a driving mechanism in transmission connection with a conveying roller and the two clamping plates, the driving mechanism comprises a disc driven to rotate by the conveying roller and a gear arranged on one side of the disc, a pre-pressing assembly movably arranged above the operation table, a moving plate movably arranged on the proximal side of each of the two clamping plates, and a transmission assembly arranged between the moving plate and a pressing plate.

Description

Technical Field

[0001] This invention relates to the field of cardboard groove technology, specifically to a cardboard groove device for carton processing. Background Technology

[0002] In the carton manufacturing process, grooving (also known as creasing) is a key process. Its purpose is to press clear crease lines on the cardboard so that the cardboard can be bent accurately and efficiently to form the three-dimensional structure of the carton. In the carton manufacturing process, the grooving process is crucial, and its quality directly determines the accuracy of the carton forming and the strength of the carton.

[0003] Most cardboard used for transportation, packaging, and warehousing is made of corrugated paper. Corrugated paper has a unique structure, the root of which lies in its "sandwich" interlayer structure. It is mainly composed of two parts: the face liner / inner liner is a smooth and flat boxboard, and the corrugated core is a piece of paper that has been pressed into a wavy shape and glued between the two face linerboards.

[0004] During the cardboard box grooving process, the flat cardboard is passed directly through the grooving rollers. The upper and lower sets of grooving rollers perform the grooving process on the cardboard box, completing the two actions of "crushing the corrugations" and "forming fold lines" in an instant. This is a violent and forced deformation, causing the cardboard structure to be subjected to excessively sudden and extreme stress, which can lead to new problems, namely: 1. Material accumulation on the inside (wrinkling): The creasing roller is like a blunt knife, instantly denting the cardboard. Under the enormous pressure, the excess paper and corrugated material on the inside of the cardboard (the compressed side) has nowhere to go and can only accumulate disorderly near the creasing line, forming wavy wrinkles. This causes the production line to need to stop frequently for adjustment, and defective products need to be sorted, reworked or scrapped, disrupting the production rhythm.

[0005] 2. Outer fiber breakage (bursting): When creased, the outer paper is forcibly stretched. If the pressure is too great or the paper is too brittle, the fiber is like a rubber band stretched to its limit and breaks instantly. At the same time, the huge pressure will completely crush the corrugated wave structure, losing its buffer. As a result, the outer paper bears all the tension alone and is more likely to break. During transportation and use, the box is prone to cracking directly from the crack and collapsing, thus losing its protective function.

[0006] This often puts operators in a dilemma: to prevent breakage, the pressure needs to be reduced, but too little pressure results in unclear indentations, easy rebound, and is ineffective on thick cardboard. To obtain clear indentations, the pressure must be increased, but too much pressure exacerbates breakage and wrinkling. Therefore, finding the pressure balance point for adjusting the creasing wheels during cardboard processing is a problem that current cardboard creasing devices need to solve and address. Therefore, the present invention proposes a cardboard groove pressing device for carton processing that can reduce wrinkles and breaks. Summary of the Invention

[0007] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a cardboard grooving device for carton processing, thereby solving the problem mentioned in the background art where cardboard structures are subjected to excessively sudden and extreme stress during grooving, resulting in internal material accumulation and wrinkles, and external fiber breakage and bursting, affecting processing efficiency and product quality. It can also cause cardboard to crack directly from the tear, collapse, and lose its protective function.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a cardboard groove pressing device for carton processing, comprising an operating table, a conveyor roller rotatably disposed above the operating table, and a pressing wheel for groove pressing the cardboard, characterized in that it further comprises: A clamping assembly is movably mounted on the operating table, and the clamping assembly includes two clamping plates arranged opposite each other; A drive mechanism is connected to a conveyor roller and two clamping plates. The drive mechanism includes a disc that is driven to rotate by the conveyor roller and a gear located on one side of the disc. The gear is connected to the clamping plates, and there is a meshing gear set of less than one revolution between the disc and the gear. The disc and the gear are configured to mesh intermittently, so as to intermittently convert the rotation of the conveyor roller into the opposite movement of the two clamping plates. The two clamping plates move closer to each other to center and limit the cardboard during the conveying process. The pre-compression assembly is movably mounted above the operating table. The pre-compression assembly includes two symmetrically arranged pressure plates, and each of the two clamping plates has a movable plate movably mounted on its facing surface. A transmission assembly is provided between the movable plate and the pressure plate. During the process of the clamping plates clamping the cardboard, the movable plate contacts the cardboard and undergoes translation in the opposite direction of the clamping plate's movement under the squeezing action of the clamping plates and the cardboard. The transmission assembly converts the translational motion of the movable plate into the vertical downward pressing motion of the pressure plate, thus pre-compressing the cardboard.

[0009] Preferably, the connecting rods are symmetrically and movably inserted into the top of the operating table, and the top of the operating table is provided with a limiting groove that can accommodate the horizontal sliding of the connecting rods. A helical spring is wound around the connecting rod below the control panel, and the other end of the helical spring is wound around the bottom of the control panel.

[0010] Preferably, the inner wall of the clamping plate is fixedly connected with return springs at equal intervals; Rubber pads are fixedly laid on the surfaces of both the clamping plate and the moving plate.

[0011] Preferably, a conveying pipe is fixed at the top of the operating table, and the conveying pipe is located above the movable rod; The top of the control panel is symmetrically fixed with a fixing plate, and the top of the fixing plate is fixed with an L-shaped plate. Limiting plates are symmetrically fixed at the top of the operating table; One end of the control panel is symmetrically equipped with pressing wheels, and a ball screw is movably inserted into the top of the pressing wheels.

[0012] Preferably, a rotating rod is fixed to the bottom end of the gear, and the gear and the disc are movably connected to the bottom end of the operating table. A belt is fitted onto the surface of the rotating rod, and the other end of the belt is fitted onto the surface of the movable rod.

[0013] Preferably, the gear surface has teeth fixed at equal angles, and the teeth on the gear surface do not cover the entire surface; One side of the disk is set as a semi-circular ring structure, and one end of the semi-circular ring is provided with a tooth groove that matches the teeth of the gear. Push rods are fixed to the top of the gear and one side of the disk, and the two sets of push rods are in contact with each other.

[0014] Preferably, an adjusting plate is movably provided on one side of the clamping plate. The adjusting plate consists of two parts: a movable plate and a plug rod. Adjusting plates are movably provided at equal intervals on one side of the movable plate. One side of the movable plate is close to the clamping plate, and the other side of the movable plate is fixed to the moving column; The insertion rod is movably inserted into the clamping plate, and the surface of the insertion rod is fixed to the other end of the return spring; A limiting ring is provided on one side of the movable plate through which the insertion rod moves, and the diameter of the limiting ring is larger than the diameter of the other ends. The limiting ring is in contact with the movable plate.

[0015] Preferably, the top end of the movable column is movably inserted into the top end of the fixed plate, and the top end of the fixed plate is provided with a limiting groove that can accommodate the horizontal sliding of the movable column. One side of the movable column is provided with an inclined slope, and the inclined end of the movable column is provided with grooves at equal intervals. Rollers are installed in the chute for rolling.

[0016] Preferably, U-shaped rods are fixed at equal intervals at the top of the rollers, and pressure plates are fixed at the bottom of the U-shaped rods; The bottom end of the pressure plate is designed to be curved; Both ends of the U-shaped rod are simultaneously inserted into the L-shaped plate at the top of the limiting plate and the fixing plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention adds an extra rotating wheel in front of the road surface to be traversed by the pressing roller, which can contact the crushed stone first, and utilizes the characteristic that the crushed stone will generate a reverse upward elastic force on the rotating wheel. 1. This invention features a centered clamping mechanism before the cardboard enters the formal creasing rollers. This centered clamping mechanism, in conjunction with the pressing structure, pre-bends the cardboard, creating a smooth, large-radius arc at the future creasing line position. This pre-bending process is equivalent to "warming up" the fibers of the face paper, liner paper, and corrugated core. It slowly stretches the outer fibers while compressing the inner fibers, preparing them for the subsequent sharp bending. When the pre-bent cardboard enters the formal creasing rollers, its deformation transitions from "existing arc" to "sharp crease," rather than a sudden change from "completely flat" to "sharp crease." This significantly reduces the severity of deformation, minimizing the accumulation of inner material and wrinkles and the breakage of outer fibers during creasing, increasing yield, maintaining production efficiency, and providing stable protection for the cardboard.

[0018] 2. This invention cleverly utilizes the characteristic of the conveyor roller continuously rotating to convey the cardboard, thereby driving the centering structure to intermittently start and clamp the cardboard in the center. At the same time, the force of the centering structure clamping towards the center causes the pressing structure to drive the pressure plate downward to pre-bend the cardboard. With the power of the conveyor roller itself, no additional electricity is consumed, and no additional power equipment needs to be purchased. Synchronous pre-processing can be achieved when the equipment is started, ensuring that the timing and position of each pre-bending are accurate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the third three-dimensional structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the fourth three-dimensional structure of the present invention.

[0023] Figure 5 This is a front view cross-sectional structural diagram of the gear and disk of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the movable rod and connecting rod of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the movable plate and the adjusting plate of the present invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the movable column and slide of the present invention.

[0027] Figure 9 This is a three-dimensional front view of the clamping plate and the movable column of the present invention.

[0028] Figure 10 This is a front view schematic diagram of the pressure plate and rollers of the present invention.

[0029] Figure 11 This is a schematic diagram showing the usage state of the gear, disk, and push rod of the present invention.

[0030] Figure 12 This is a schematic diagram illustrating the usage state of the present invention.

[0031] In the diagram: 1. Operating table; 2. Conveying pipe; 3. Conveying roller; 4. Gear; 5. Disc; 6. Movable rod; 7. Belt; 8. Connecting rod; 9. Helical spring; 10. Fixed plate; 11. U-shaped rod; 12. Pressure plate; 13. Limiting plate; 14. Push rod; 15. Rotating rod; 16. Clamping plate; 17. Moving plate; 18. Adjusting plate; 19. Return spring; 20. Pressing wheel; 21. Moving column; 22. Slide groove; 23. Roller. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1 to 12 The present invention provides a technical solution: a cardboard groove pressing device for carton processing, comprising an operating table 1, a conveying roller 3 rotatably disposed above the operating table 1, and a grooving roller 20 for groove pressing the cardboard, and further comprising: The clamping assembly is movably mounted on the operating table 1. The clamping assembly includes two clamping plates 16 arranged opposite each other. The two clamping plates 16 move closer to each other to center and limit the cardboard during the conveying process. The drive mechanism is connected to the transmission roller 3 and the two clamping plates 16 for driving the synchronous movement of the two clamping plates 16. The drive mechanism includes a disc 5 driven to rotate by the transmission roller 3 and a gear 4 located on one side of the disc 5. The gear 4 is connected to the clamping plates 16 for transmission, and there is a meshing tooth group of less than one turn between the disc 5 and the gear 4. The disc 5 and the gear 4 are configured to mesh intermittently to drive the clamping action of the clamping plates 16 intermittently. The pre-compression assembly is movably mounted above the operating table 1. The pre-compression assembly includes two symmetrically arranged pressure plates 12. The pressure plates 12 move by lifting and moving, and are used to pre-compress the cardboard. Movable plates 17 are movably provided on the adjacent sides of the two clamping plates 16. The movable plates 17 are used to contact the cardboard and move horizontally under the squeezing action of the clamping plates 16 and the cardboard. A transmission assembly is located between the movable plate 17 and the pressure plate 12, and is used to convert the translational motion of the movable plate 17 into the downward pressing motion of the pressure plate 12.

[0034] Additionally, it should be noted that the conveyor roller 3 is driven to rotate by a stepper motor, which controls the opening and closing according to the interval and length of the cardboard conveying. Each time the conveyor roller 3 rotates one revolution, it stops. When the cardboard is about to be conveyed from the middle of the conveyor roller 3, the teeth of the disc 5 are about to reach the gear 4. When the cardboard is completely above the conveyor tube 2, the tooth end of the disc 5 rotates to mesh with the gear 4. As a result, the gear 4 rotates, causing the connecting rod 8 to rotate and the pressure plate 12 to press down, thus achieving the pre-bending treatment of the cardboard. When the processed cardboard leaves, the next set of cardboard is ready to enter the conveyor roller 3. The conveyor roller 3 is driven by the motor again to convey the cardboard, thus realizing the cycle. The coverage range and number of teeth on the surface of the disc 5 are adapted to the cardboard conveying speed.

[0035] In a specific implementation, a clamping assembly for centering is movably provided at one end of the operating table 1, and the clamping assembly includes a movable rod 6 that is rotatably inserted above the operating table 1; the two ends of the movable rod 6 are symmetrically hinged with connecting rods 8 that move synchronously with it; and a clamping plate 16 is fixed at the top of the connecting rod 8.

[0036] Additionally, it should be noted that after the rotating rod 15 rotates, it drives the movable rod 6 to rotate via the belt 7. The rotation of the movable rod 6 causes the two sets of connecting rods 8 to move the clamping plate 16 towards the center simultaneously. The insertion rods on the surface of the adjusting plate 18 limit the movement of the moving plate 17 and the adjusting plate 18. For the centered clamping and processing of cardboard, this forces the predetermined indentation position of the cardboard to be precisely aligned with the subsequent crease roller 20, preventing lateral deviation and helping to obtain straight, clear, and accurately positioned indentations. It also prevents the cardboard from sliding laterally or warping when entering the conveyor roller 3, reducing abnormal wear of the crease roller 20 due to misalignment. According to the attached... Figure 6 As shown, the movable rod 6 and its mirror-symmetrical connecting rod 8 at the top are both set to be inclined. When the inclined movable rod 6 rotates, the hinge points on both sides of its top end will move in a circular motion. Since one end of the connecting rod 8 is hinged to these two hinge points respectively, the rotation of the movable rod 6 will directly drive the connecting rod 8 to move, causing the connecting rod 8 to swing around its other end or move along a set trajectory. The connecting rod 8 moves synchronously in a plane under the drive of the movable rod 6.

[0037] In practice, the connecting rod 8 is symmetrically and movably inserted into the top of the operating table 1, and the top of the operating table 1 is provided with a limiting groove that can accommodate the horizontal sliding of the connecting rod 8. Additionally, it should be noted that the symmetrical connecting rods 8 move simultaneously in the limiting groove towards the center or to both sides, limiting the direction of movement of the connecting rods 8 and the clamping plate 16, so that the connecting rods 8 and the adjusting plate 18 maintain horizontal movement, reducing the occurrence of offset and displacement.

[0038] A helical spring 9 is wound around the connecting rod 8 below the operating table 1, and the other end of the helical spring 9 is wound around the bottom of the operating table 1.

[0039] Additionally, it should be noted that the helical spring 9 is stretched when the connecting rod 8 moves towards the center. When the belt 7 stops driving the movable rod 6 to rotate, it can immediately push the movable rod 6 and the connecting rod 8 back to their initial positions, helping the movable rod 6 and the connecting rod 8 to reset and prepare for the next pressing action.

[0040] In practice, the inner wall of the clamping plate 16 is fixedly connected with return springs 19 at equal intervals; Rubber pads are fixedly laid on the surfaces of both the clamping plate 16 and the moving plate 17.

[0041] Additionally, it should be noted that the rubber material has good friction and a certain degree of elasticity, which protects the sides of the cardboard and reduces friction generated during cardboard processing when clamped in the center.

[0042] In practice, a conveying pipe 2 is fixed at the top of the operating table 1, and the conveying pipe 2 is located above the movable rod 6. Additionally, it should be noted that when the cardboard is transported and moved on it, only a small initial thrust is required for the cardboard to move forward easily, allowing the cardboard to move and be transported smoothly and seamlessly between the two sets of conveyor mechanisms.

[0043] A fixing plate 10 is symmetrically fixed to the top of the operating table 1, and an L-shaped plate is fixed to the top of the fixing plate 10. Additionally, it should be noted that a U-shaped rod 11 is movably inserted into the L-shaped plate, which limits the position of the U-shaped rod 11 and the roller 23, and also provides certain support for the position of the U-shaped rod 11 and the roller 23, so that the U-shaped rod 11 and the roller 23 can only move up and down, and remain in their original position when not moving.

[0044] Limiting plates 13 are symmetrically fixed at the top of the operating table 1; Additionally, it should be noted that the limiting plate 13 limits the other end of the U-shaped rod 11, allowing the U-shaped rod 11 and the pressure plate 12 to maintain a horizontal position and move up and down, reducing offset and displacement, and facilitating reset and subsequent use, thus enabling repeated cycles of cardboard pre-bending processing.

[0045] One end of the operating table 1 is symmetrically and movably provided with a pressing wheel 20, and a ball screw is movably inserted into the top of the pressing wheel 20.

[0046] Additionally, it should be noted that motors are installed on one side of both the conveyor roller 3 and the ball screw. The ball screw is a bidirectional ball screw. Before processing, the motor is started to drive the bidirectional ball screw to rotate according to the required groove processing position, thereby changing the working distance between the two sets of crease rollers 20. The conveyor roller 3 is controlled by the motor to open and close, conveying and limiting the cardboard, allowing the crease rollers 20 to perform groove processing.

[0047] In practice, a rotating rod 15 is fixed to the bottom of gear 4, and gear 4 and disk 5 are movably connected to the bottom of operating table 1. A belt 7 is fitted onto the surface of the rotating rod 15, and the other end of the belt 7 is fitted onto the surface of the movable rod 6.

[0048] In practice, the surface of gear 4 is fixed with teeth at equal angles, and the teeth on the surface of gear 4 do not cover the entire surface; one side of the disc 5 is set as a semi-circular ring structure, and one end of the semi-circular ring is provided with a tooth groove that matches the teeth of gear 4. Additionally, it should be noted that the gear 4, whose teeth are not fully fixed, and the disc 5, which has a toothed groove at one end, mesh together to allow the central clamping component to rotate intermittently. When not rotating, the helical spring 9 pushes the central clamping component and the pressure plate 12 to reset, thereby achieving cyclic and intermittent clamping and pre-bending. When the toothed groove rotates to the far end of the teeth, the gear 4 does not cover the toothed end face of the disc 5, and the gear 4 no longer meshes with the disc 5 for transmission. As a result, the belt 7 no longer activates the central clamping component, and the pressure plate 12 will not be pressed down for pre-bending. When the toothed groove of the disc 5 rotates to the toothed end, the transmission will resume.

[0049] Push rods 14 are fixed to the top of gear 4 and one side of disk 5 respectively, and the two sets of push rods 14 are in contact.

[0050] Additionally, it should be noted that the push rod 14 at the disk 5 is located at the beginning of the contact between the tooth groove and the tooth, while the push rod 14 at the gear 4 is located at the end of the contact between the tooth groove and the tooth. When the tooth groove of the disk 5 is about to reach the tooth end of the gear 4, the push rod 14 of the disk 5 pushes or moves the push rod 14 of the gear 4 to rotate, helping the gear 4 and the tooth to contact and mesh with the tooth groove of the disk 5. When the push rod 14 stops pushing, the gear 4 and the disk 5 enter a "dormant period" after meshing and rotating, waiting for the next push and meshing.

[0051] In specific implementation, an adjustment plate 18 is movably provided on one side of the clamping plate 16. The adjustment plate 18 consists of two parts: a movable plate and a plug rod. A plug rod is movably provided at equal intervals on one side of the movable plate. One side of the movable plate is close to the clamping plate 16, and the other side of the movable plate is fixed to the moving column 21; The insertion rod is movably inserted into the clamping plate 16, and the surface of the insertion rod is fixed to the other end of the return spring 19; Additionally, it should be noted that initially, the adjusting plate 18 is close to the clamping plate 16. The arrangement of multiple sets of insert rods can make the connection between the moving plate 17 and the adjusting plate 18 more stable. The return spring 19 helps the moving plate 17 and the adjusting plate 18 to drive the moving column 21 to return to its original position, thus realizing the cyclic processing operation.

[0052] A limiting ring is provided on one side of the movable plate through which the insertion rod moves, and the diameter of the limiting ring is larger than the diameter of the other ends. The limiting ring is in contact with the movable plate.

[0053] Additionally, it should be noted that after the limiting ring pre-bends the cardboard, the adjusting plate 18 and the moving column 21 can move at the top of the fixed plate 10 as the clamping plate 16 moves. At this time, the roller 23, U-shaped rod 11, limiting plate 13, and pressure plate 12 will rise under the action of the inclined surface of the moving column 21.

[0054] As the cardboard is about to be conveyed from the middle of the conveyor roller 3, it has not yet fully reached the top of the conveyor tube 2. The toothed area of ​​the disc 5 is about to reach the surface of the gear 4. When the cardboard fully reaches the top of the conveyor tube 2, the toothed end of the disc 5 reaches the gear 4 and meshes with it. At this time, the gear 4 drives the connecting rod 8 to rotate and center the cardboard. At the same time, the moving plate 17 is pushed by the pushing force of the cardboard, thereby causing the adjusting plate 18 to be pushed outward synchronously, driving the moving column 21 to move outward on the fixed plate 10. At this time, the roller 23, U-shaped rod 11, limiting plate 13, and pressure plate 12 will descend along the inclined surface of the moving column 21 under the action of gravity to pre-bend the cardboard. After the pre-bending is completed, the connecting rod 8 drives the clamping plate 16 to reset in the opposite direction through the spiral spring 9. Multiple sets of reset springs 19 push the moving plate 17 to reset. The clamping plate 16 simultaneously pushes the adjusting plate 18 and the moving column 21 to reset, so as to facilitate subsequent recycling.

[0055] In specific implementation, the top end of the movable column 21 is movably inserted and connected to the top end of the fixed plate 10, and the top end of the fixed plate 10 is provided with a limiting groove that can accommodate the horizontal sliding of the movable column 21. Additionally, it should be noted that the limiting groove of the fixed plate 10 limits the direction of movement of the moving column 21, allowing it to move horizontally. When the clamping plate 16 clamps the cardboard in the center along with the connecting rod 8, the symmetrical clamping plate 16 drives the adjusting plate 18 to move towards the center at the same time. When the pushing force of the cardboard is generated, the moving plate 17 pushes the adjusting plate 18 and causes the adjusting plate 18 to move outward at the same time, so that the roller 23 can roll down along the slide groove 22.

[0056] One side of the movable column 21 is provided with an inclined surface, and the inclined surface end of the movable column 21 is provided with grooves 22 at equal intervals; rollers 23 are rolled in the grooves 22.

[0057] Additionally, it should be noted that the inclined surface of the movable column 21 allows the roller 23 to roll down, thereby driving the pressure plate 12 to fall. The groove 22 limits the rolling and moving position of the roller 23, allowing the roller 23 to horizontally drive the U-shaped rod 11 and the pressure plate 12 to move down, while facilitating subsequent reset and upward movement, thus helping to achieve cyclic pre-bending processing.

[0058] In specific implementation, U-shaped rods 11 are fixed at equal intervals at the top of the roller 23, and pressure plates 12 are fixed at the bottom of the U-shaped rods 11. The bottom end of the pressure plate 12 is designed to be curved; Additionally, it should be noted that the symmetrical pressure plate 12 simultaneously pre-bends both sides of the cardboard downwards, creating a smooth, large-radius arc at the future crease line position. This reduces the sudden and extreme stress on the cardboard structure caused by the later crease roller 20, allowing the fibers of the face paper, liner paper, and corrugated core to "warm up." It begins to slowly stretch the outer fibers while compressing the inner fibers, preparing them for the subsequent sharp bending.

[0059] Both ends of the U-shaped rod 11 are simultaneously inserted into the L-shaped plate at the top of the limiting plate 13 and the fixing plate 10.

[0060] Working principle: When using this cardboard grooving device for carton processing, first adjust the two sets of grooving rollers 20 to the appropriate positions according to the width of the cardboard and the position to be grooved, and the two sets of conveying rollers 3 continuously rotate to convey the cardboard.

[0061] When the cardboard is conveyed above the conveyor tube 2, one set of continuously rotating conveyor rollers 3 drives the disc 5 to rotate, and the push rod 14 rotates accordingly. Figure 11 As shown, after rotating to the corresponding position, the push rod 14 on the surface of the disc 5 rotates and pushes the push rod 14 above the gear 4 to move. At the same time, the teeth of the gear 4 are inserted into the corresponding grooves of the disc 5. The disc 5 drives the gear 4 to mesh and drive. The length of the cardboard is matched with the rotation speed of the disc 5. When the cardboard is conveyed from the middle of the conveyor roller 3, the teeth of the disc 5 are about to reach the gear 4. When the cardboard completely reaches the top of the conveyor tube 2, the tooth end of the disc 5 meshes with the gear 4 and makes the gear 4 rotate. The coverage area and number of teeth on the surface of the disc 5 are matched with the cardboard conveying speed. The gear 4 drives the rotating rod 15 at the bottom and the belt 7 to drive the movable rod 6 to rotate synchronously.

[0062] When the movable rod 6 rotates, it drives the connecting rods 8 at both ends to rotate simultaneously in a mirror image. The connecting rods 8 move towards the center at the top of the operating table 1, causing the spiral spring 9 to extend under force. The two sets of clamping plates 16 move with the movement of the connecting rods 8, clamping the cardboard in the center, which facilitates the subsequent groove pressing process of the cardboard. When the cardboard is clamped in the center, the two sets of clamping plates 16 are respectively placed on both sides of the cardboard. As the movable rod 6 gradually rotates, the clamping plates 16 gradually clamp the cardboard. The moving plate 17 is pushed by the pushing force from both sides of the cardboard and the force of the symmetrical clamping plates 16 moving towards the center. The moving plate 17 is gradually pushed to the inner wall of the clamping plates 16. After the moving plate 17 moves, it pushes the adjusting plate 18 to move outward and the return spring 19 to be compressed under force.

[0063] When the adjusting plate 18 moves, it pushes the moving column 21 to move outward on the fixed plate 10. After the moving column 21 moves gradually, the roller 23 rolls and moves down along the inclined surface of the moving column 21 in the slide groove 22. As a result, the U-shaped rod 11 moves down in the limiting plate 13 at the same time. The symmetrical pressure plate 12 simultaneously pre-bends the two sides of the cardboard downward, so that the cardboard will have a smooth, large radius arc at the future crease line position.

[0064] Finally, after the bending process, the intermittent rotation of gear 4 and disk 5 ends, and the toothed surface of disk 5 gradually rotates upward and no longer meshes with gear 4. The helical spring 9 resets and pushes the connecting rod 8 to reset, which in turn drives the movable rod 6 to reset. Multiple sets of reset springs 19 push the moving plate 17 to reset, which in turn drives the adjusting plate 18 and the moving column 21 to reset. The symmetrical pressure plate 12 resets and moves upward, no longer contacting the cardboard. The cardboard is gradually transmitted to the two sets of conveyor rollers 3. The pressure roller 20 grooves the cardboard at the pre-bending position, allowing the cardboard to be flattened more smoothly instead of being "crushed" by the instantaneous impact of the pressure roller 20.

[0065] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cardboard groove pressing device for carton processing, comprising an operating table (1), a conveyor roller (3) rotatably disposed above the operating table (1), and a grooving roller (20) for groove pressing the cardboard, characterized in that, Also includes: A clamping assembly is movably mounted on the operating table (1), the clamping assembly comprising two clamping plates (16) arranged opposite to each other. The drive mechanism is connected to the conveyor roller (3) and two clamping plates (16). The drive mechanism includes a disc (5) driven by the conveyor roller (3) and a gear (4) located on one side of the disc (5). The gear (4) is connected to the clamping plates (16) and there is a meshing tooth group of less than one turn between the disc (5) and the gear (4). The disc (5) and the gear (4) are configured to mesh intermittently to convert the rotation of the conveyor roller (3) into the opposite movement of the two clamping plates (16) in an intermittent manner. The two clamping plates (16) move closer to each other to center and limit the cardboard during the conveying process. The pre-compression assembly is movably mounted above the operating table (1). The pre-compression assembly includes two symmetrically arranged pressure plates (12), and a movable plate (17) is movably provided on the opposing surfaces of the two clamping plates (16). A transmission assembly is provided between the movable plate (17) and the pressure plate (12). During the process of the clamping plate (16) clamping the cardboard, the movable plate (17) contacts the cardboard and undergoes translation in the opposite direction of the movement of the clamping plate (16) under the squeezing action of the clamping plate (16) and the cardboard. The transmission assembly converts the translational movement of the movable plate (17) into the vertical downward pressing movement of the pressure plate (12) to pre-compress the cardboard.

2. The cardboard groove pressing device for carton processing according to claim 1, characterized in that: One end of the operating table (1) is movably provided with a clamping component for clamping the center, and the clamping component includes a movable rod (6) that is rotatably inserted above the operating table (1). The two ends of the movable rod (6) are symmetrically hinged with connecting rods (8) that move synchronously with it. The top end of the connecting rod (8) is fixed with a clamping plate (16).

3. The cardboard groove pressing device for carton processing according to claim 2, characterized in that: The connecting rod (8) is symmetrically and movably inserted into the top of the operating table (1), and the top of the operating table (1) is provided with a limiting groove that can accommodate the horizontal sliding of the connecting rod (8). The connecting rod (8) is wound with a helical spring (9) below the operating table (1), and the other end of the helical spring (9) is wound around the bottom of the operating table (1).

4. A cardboard groove pressing device for carton processing according to claim 2, characterized in that: The inner wall of the clamping plate (16) is fixedly connected with return springs (19) at equal intervals. Rubber pads are fixedly laid on the surfaces of the clamping plate (16) and the moving plate (17).

5. A cardboard groove pressing device for carton processing according to claim 1, characterized in that: The top of the operating table (1) is fixed with a transmission pipe (2), and the transmission pipe (2) is located above the movable rod (6); The top of the operating table (1) is symmetrically fixed with a fixing plate (10), and the top of the fixing plate (10) is fixed with an L-shaped plate. Limiting plates (13) are symmetrically fixed at the top of the operating table (1). One end of the operating table (1) is symmetrically and movably provided with a pressing wheel (20), and a ball screw is movably inserted into the top of the pressing wheel (20).

6. A cardboard groove pressing device for carton processing according to claim 1, characterized in that: The bottom end of the gear (4) is fixed with a rotating rod (15), and the gear (4) and the disc (5) are movably connected to the bottom end of the operating table (1). The surface of the rotating rod (15) is fitted with a belt (7), and the other end of the belt (7) is fitted on the surface of the movable rod (6).

7. A cardboard groove pressing device for carton processing according to claim 1, characterized in that: The surface of the gear (4) is fixed with teeth at equal angles, and the teeth on the surface of the gear (4) do not cover the entire surface; One side of the disk (5) is configured as a semi-circular ring structure, and one end of the semi-circular ring is provided with a tooth groove that matches the teeth of the gear (4). Push rods (14) are fixed to the top of the gear (4) and one side of the disk (5), and the two sets of push rods (14) are in contact with each other.

8. A cardboard groove pressing device for carton processing according to claim 1, characterized in that: An adjustment plate (18) is movably provided on one side of the clamping plate (16). The adjustment plate (18) consists of a movable plate and a plug rod. The adjustment plate (18) is movably provided on one side of the movable plate at equal intervals. One side of the movable plate is close to the clamping plate (16), and the other side of the movable plate is fixed to the moving column (21); The insertion rod is movably inserted into the clamping plate (16), and the surface of the insertion rod is fixed to the other end of the return spring (19); A limiting ring is provided on one side of the movable plate through which the insertion rod moves, and the diameter of the limiting ring is larger than the diameter of the other ends. The limiting ring is in contact with the movable plate.

9. A cardboard groove pressing device for carton processing according to claim 8, characterized in that: The movable column (21) is movably inserted into the top end of the fixed plate (10), and the top end of the fixed plate (10) is provided with a limiting groove that can accommodate the horizontal sliding of the movable column (21). The movable column (21) has an inclined surface on one side, and the inclined surface end of the movable column (21) is provided with grooves (22) at equal intervals. Rollers (23) are tumbling in the groove (22).

10. A cardboard groove pressing device for carton processing according to claim 9, characterized in that: The top of the roller (23) is fixed with U-shaped rods (11) at equal intervals, and the bottom of the U-shaped rods (11) is fixed with pressure plates (12). The bottom end of the pressure plate (12) is arc-shaped; Both ends of the U-shaped rod (11) are simultaneously inserted into the L-shaped plate at the top of the limiting plate (13) and the fixing plate (10).

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