Mechanized die cutting device for paper bag production and die cutting method thereof

Abstract

This invention relates to the field of paper bag production technology, specifically to a mechanized die-cutting device and method for paper bag production. The mechanized die-cutting device includes: an operating table with a feeding assembly for transporting paper bag raw materials; two sets of support plates fixedly mounted on the operating table, with a cutting assembly between them; the cutting assembly includes a driving structure and an elastic cutting structure; the driving structure drives the elastic cutting structure to move along the length of the operating table; during movement, a guide structure located between the support plates cooperates with the elastic cutting structure to force the elastic cutting structure closer to the operating table, thereby cutting the paper bag raw materials placed on the operating table; a flattening assembly is also provided on the operating table; when the elastic cutting structure moves, the flattening assembly is triggered to stretch the paper bag raw materials, preventing wrinkles from appearing at the cut ends during cutting.

Description

Technical Field

[0001] This invention relates to the field of paper bag production technology, specifically a mechanized die-cutting device and die-cutting method for paper bag production. Background Technology

[0002] Die-cutting machines, also known as die-cutting machines, cutting machines, or CNC punching machines, are mainly used for die-cutting (full cut, half cut), creasing, hot stamping, laminating, and automatic waste removal of various non-metallic materials, self-adhesive labels, EVA, double-sided tape, electronic products, and mobile phone pads. They utilize steel blades, metal molds, and steel wire (or templates carved from steel plates) to apply pressure through an imprinting plate, cutting printed materials or cardboard into specific shapes. They are essential equipment for post-printing packaging processing.

[0003] When producing paper bags, a die-cutting machine is needed to cut them. Some traditional die-cutting machines on the market use roller die-cutting. During the cutting process, the paper bags are prone to tilting during transportation, which leads to poor cutting results. In addition, the pressing step when cutting the paper bags can easily cause wrinkles on the cut surface, thus affecting the product quality of the paper bags. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanized die-cutting device and method for paper bag production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A mechanized die-cutting device for paper bag production includes: an operating table, on which a feeding component is provided, the feeding component being capable of transporting paper bag raw materials;

[0007] The operating table is symmetrically fixed with two sets of support plates along its width direction. A cutting assembly is arranged between the two sets of support plates. The cutting assembly includes a driving structure and an elastic cutting structure. The driving structure can drive the elastic cutting structure to move along the length direction of the operating table. During the movement of the elastic cutting structure, the guide structure arranged between the support plates cooperates with the elastic cutting structure to force the elastic cutting structure to move towards the operating table synchronously in the longitudinal direction, thereby enabling the cutting of the paper bag raw material placed on the operating table.

[0008] The operating table is also equipped with a flattening component. When the elastic cutting structure is in operation, the flattening component is triggered, which can stretch the paper bag material to prevent wrinkles from appearing at the cut end of the paper bag material during cutting.

[0009] The mechanized die-cutting device for paper bag production as described above: the feeding assembly includes a feeding structure and a conveying structure. The feeding structure includes a feeding roller group rotatably mounted on the operating table. The feeding roller group includes a main feeding roller and a slave feeding roller. The main feeding roller and the slave feeding roller are connected by a gear set.

[0010] The mechanized die-cutting device for paper bag production as described above: the conveying structure includes conveying rollers rotatably mounted on the support plate, two sets of conveying rollers are symmetrically arranged along the length direction of the support plate, the two sets of conveying rollers are connected by a belt, and one set of conveying rollers is connected to the main feeding roller by a linkage belt.

[0011] The mechanized die-cutting device for paper bag production as described above: the elastic cutting structure includes a slide bar, and two sets of slide bars are symmetrically arranged along the width direction of the operating table. The two sets of slide bars are respectively fixedly mounted on the two sets of support plates, and a second spring is slidably mounted on each set of slide bars. One end of the second spring abuts against the slide bar, and the other end abuts against the movable slide rail slidably mounted on the slide bar. A cutting component is fixedly mounted between the two sets of movable slide rails.

[0012] The mechanized die-cutting device for paper bag production as described above: the cutting component includes a connecting rod that connects two sets of the movable slide rails, the two ends of the connecting rod are respectively slidably connected to guide plates fixedly mounted on the two sets of support plates, and a cutting blade is fixedly mounted on the connecting rod.

[0013] The mechanized die-cutting device for paper bag production as described above: the guide structure includes a fitting groove formed on the guide plate, the end of the connecting rod is slidably disposed in the fitting groove, and the fitting groove includes a horizontal groove, an inclined groove, a vertical groove, and a reset groove, and a deflection plate is rotatably installed at the connection between the inclined groove and the horizontal groove, and the deflection plate is elastically connected to the guide plate through a spring sheet.

[0014] The mechanized die-cutting device for paper bag production as described above: the driving structure includes cylinders, and two sets of cylinders are symmetrically arranged along the width direction of the operating table. The two sets of cylinders are respectively fixedly mounted on the two sets of guide plates, and the extension and retraction ends of the two sets of cylinders are fixedly provided with limit blocks. The connecting rod passes through the limit block and is placed in the sliding groove opened on the limit block.

[0015] The mechanized die-cutting device for paper bag production as described above includes a flattening assembly comprising a sliding structure. Four sets of sliding structures are arranged at the four corners of the operating table. Each set of sliding structures includes a guide rail fixedly connected to the guide plate. A moving rod is disposed within the guide rail, and a first spring is slidably disposed on the moving rod. One end of the first spring is connected to a baffle formed on the moving rod, and the other end is connected to a first lifting cylinder slidably disposed on the moving rod. The device also includes a positioning rod fixedly disposed on the support plate, with a second lifting cylinder slidably disposed on the positioning rod. The second lifting cylinder is connected to the first lifting cylinder via a hinged rod.

[0016] The mechanized die-cutting device for paper bag production as described above: four sets of second lifting cylinders are fixedly connected by a connecting frame, and the connecting frame cooperates with the connecting plate between the two sets of movable slide rails, which can drive the four sets of second lifting cylinders toward the operating table.

[0017] A mechanized die-cutting method for bag production is also proposed, employing the mechanized die-cutting device for paper bag production as described above, including the following steps:

[0018] Step 1: Start the feeding roller assembly, and then the conveyor rollers follow the feeding roller assembly to move synchronously, which can continuously transport the paper bag raw materials to the unloading area;

[0019] Step 2: During the paper bag transportation process, the drive structure synchronously pushes the cutting blade and the paper bag raw material to maintain synchronous movement. During the movement, the cutting blade, with the cooperation of the guide structure, moves synchronously towards the operating table in the longitudinal direction.

[0020] Step 3: During the approach process, the flattening component is triggered, and the four sets of sliding structures can first contact the paper bag material, and then press the four corners of the paper bag material to prevent wrinkles from appearing on the cut edges of the paper bag material during subsequent cutting.

[0021] Step 4: During the process of the paper bag material being stretched, the cutting blade contacts the operating table and can cut the paper bag material. Then the cutting blade rises rapidly and returns to the initial position under the drive of the drive structure.

[0022] Step 5: Then, the cutting blade repeats steps 2, 3, and 4 above to complete the repeated cutting of the paper bag material.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] By setting up a feeding component and utilizing the cooperation between the feeding structure and the conveying structure, the paper bag raw material can be driven to slide on the operating table, so that the paper bag raw material moves to the unloading area and falls onto the stacking table;

[0025] Simultaneously, by setting up a cutting component, the cooperation between the drive structure and the elastic cutting structure can drive the connecting rod set on the two sets of guide plates to slide the cutting blade along the length of the operating table. As the cutting blade slides with the connecting rod, the fitting groove on the guide plate cooperates with the connecting rod, which can force the connecting rod to move the cutting blade closer to the operating table. As the connecting rod moves closer to the operating table, the connecting plate fixedly connected to the connecting rod can trigger the action of the flattening component set on the operating table. When the flattening component is activated, the four sets of sliding structures can support and press the four corners of the paper bag material to be cut, so that the paper bag material is in a taut state, so that the cutting blade can quickly cut the paper bag material after contacting it, resulting in a cleaner cut.

[0026] Furthermore, after the cutting blade completes its cutting action, the second spring can drive the connecting rod to move the cutting blade away from the operating table quickly. At this time, the cutting blade is away from the operating table and will not affect the transportation process of the paper bag raw materials on the operating table. With the cooperation of the drive structure and the guide structure, the connecting rod can drive the cutting blade back to the initial position so that the subsequent cutting blade and feeding assembly can perform cutting and feeding actions. Attached Figure Description

[0027] Figure 1 A schematic diagram of a mechanized die-cutting device for paper bag production.

[0028] Figure 2 A schematic diagram of the other side of the mechanized die-cutting device for paper bag production.

[0029] Figure 3 A schematic diagram of the internal structure of the support plate in a mechanized die-cutting device for paper bag production.

[0030] Figure 4 A schematic diagram of the structure of the cutting component, the flattening component, and the feeding component in a mechanized die-cutting device for paper bag production.

[0031] Figure 5 A schematic diagram of the feeding assembly in a mechanized die-cutting device for paper bag production.

[0032] Figure 6 A schematic diagram of the connection between the cutting component and the flattening component in a mechanized die-cutting device for paper bag production.

[0033] Figure 7 A schematic diagram of the flattening component in a mechanized die-cutting device for paper bag production.

[0034] Figure 8 A schematic diagram of the sliding structure in a mechanized die-cutting device for paper bag production.

[0035] Figure 9A schematic diagram of the cutting component in a mechanized die-cutting device for paper bag production.

[0036] Figure 10 A schematic diagram of the guide structure in a mechanized die-cutting device for paper bag production.

[0037] In the diagram: 1. Operating platform; 101. Paper bag raw material; 102. Feeding area; 2. Conveying roller; 3. Support plate; 4. Guide plate; 401. Horizontal chute; 402. Inclined chute; 403. Vertical chute; 404. Reset chute; 5. Cylinder; 6. Feeding roller assembly; 601. Main feeding roller; 602. Driven feeding roller; 7. Gear assembly; 701. Main gear; 702. Driven gear; 8. Moving slide rail; 9. Slide rod; 10. Connecting... 11. Connecting frame; 12. Moving rod; 13. Positioning rod; 14. Limiting plate; 15. Guide rail; 16. Pulley; 17. First spring; 18. First lifting cylinder; 19. Hinge rod; 20. Second lifting cylinder; 21. Connecting rod; 22. Protruding post; 23. Connecting plate; 24. Cutting blade; 25. Second spring; 26. Deflection plate; 27. Spring piece; 28. Limiting block; 29. ​​Sliding groove; 20. Third spring. Detailed Implementation

[0038] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0039] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0040] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0041] Please see Figure 1-10 In this embodiment of the invention, a mechanized die-cutting device for paper bag production includes:

[0042] The operating table 1 is equipped with a feeding component, which is capable of transporting the paper bag raw material 101.

[0043] For details, please refer to Figure 1 , Figure 2 , Figure 3One end of the aforementioned operating table 1 is provided with an arc-shaped feeding area 102. When the feeding component is activated, it can continuously convey the paper bag raw material 101 laid on the operating table 1 to the feeding area 102. During the conveying process, the cutting component on the operating table 1 is activated, which can cut the paper bag raw material 101 at equal intervals. The cut paper bag raw material 101 can be combined with the feeding area 102 under the guidance of the feeding component. Then, the arc-shaped feeding area 102 can guide the cut paper bag raw material 101 to fall onto the stacking platform (not shown in the figure) placed at the feeding area 102.

[0044] For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The feeding assembly includes a feeding structure and a conveying structure. The feeding structure includes a feeding roller group 6 rotatably mounted on the operating table 1. The feeding roller group 6 includes a main feeding roller 601 and a secondary feeding roller 602. The main feeding roller 601 and the secondary feeding roller 602 are connected by a gear group 7.

[0045] For details, please refer to Figure 4 , Figure 5 The gear set 7 includes a main gear 701 and a driven gear 702. The main gear 701 is coaxially fixed with the main feeding roller 601, and the driven gear 702 is coaxially fixed with the driven feeding roller 602. The feeding roller set 6 is located away from the unloading area 102. The main feeding roller 601 is coaxially fixed with the output shaft of a motor fixed on the operating table 1. In use, the paper bag raw material 101 is first placed in the main feeding roller 601 and the driven feeding roller 602. Then, after starting the motor, the output shaft of the motor can drive the main feeding roller 601 to rotate counterclockwise (see reference). Figure 4 , Figure 5 At the same time, the main gear 701 and the driven gear 702 enter the meshing transmission state and rotate counterclockwise. The main feeding roller 601 can synchronously drive the driven feeding roller 602 to rotate clockwise. By utilizing the cooperation between the two, the paper bag raw material 101 can be fed onto the operating table 1. After the paper bag raw material 101 is laid flat on the operating table 1, the conveying structure can cooperate with the feeding structure to pull the paper bag raw material 101 toward the unloading area 102 for subsequent cutting components to cut.

[0046] The conveying structure includes conveying rollers 2 rotatably mounted on the support plate 3. Two sets of conveying rollers 2 are symmetrically arranged along the length of the support plate 3. The two sets of conveying rollers 2 are connected by a belt, and one set of conveying rollers 2 is connected to the main feeding roller 601 by a linkage belt.

[0047] For details, please refer to Figure 5The above-mentioned conveying structure is provided in two sets, which are respectively set on two sets of support plates 3. Each set of conveying structure includes two sets of conveying rollers 2 arranged along the length of the support plate 3. The outer wall of the conveying roller 2 is covered with a rubber sleeve, which can increase the contact friction between the conveying roller 2 and the paper bag raw material 101. When the feeding roller group 6 is activated, due to the connection of the linkage belt and the belt, the conveying roller 2 can rotate counterclockwise with the main feeding roller 601. After the feeding structure puts the paper bag raw material 101 onto the operating table 1, the conveying roller 2 can press the paper bag raw material 101 against the operating table 1. Then, under the rotation of the conveying roller 2, the paper bag raw material 101 can move towards the unloading area 102, thereby facilitating the subsequent cutting component to cut the paper bag raw material 101.

[0048] For further details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 9 The operating table 1 is symmetrically fixed with two sets of support plates 3 along its width direction. A cutting assembly is provided between the two sets of support plates 3. The cutting assembly includes a driving structure and an elastic cutting structure. The driving structure can drive the elastic cutting structure to move along the length direction of the operating table 1. During the movement of the elastic cutting structure, the guide structure provided between the support plates 3 cooperates with the elastic cutting structure to force the elastic cutting structure to move towards the operating table 1 synchronously in the longitudinal direction, thereby enabling the paper bag raw material 101 placed on the operating table 1 to be cut.

[0049] The elastic cutting structure includes a slide rod 9. Two sets of slide rods 9 are symmetrically arranged along the width direction of the operating table 1. The two sets of slide rods 9 are respectively fixedly mounted on the two sets of support plates 3. A second spring 22 is slidably mounted on each set of slide rods 9. One end of the second spring 22 abuts against the slide rod 9, and the other end abuts against the movable slide rail 8 slidably mounted on the slide rod 9. A cutting element is fixedly mounted between the two sets of movable slide rails 8.

[0050] For details, please refer to Figure 9 The second spring 22 is always in a compressed state. In the compressed state, the second spring 22 pushes the moving slide rail 8 away from the operating table 1. With the cooperation of the second spring 22 and the guide structure, the subsequent cutting part can quickly return to the initial position after cutting the paper bag raw material 101, so that the next cutting operation can be performed.

[0051] For details, please refer to Figure 9The cutting component includes a connecting rod 19 that connects two sets of the movable slide rails 8. The two ends of the connecting rod 19 are slidably connected to guide plates 4 that are fixedly mounted on two sets of support plates 3, and a cutting blade 21 is fixedly mounted on the connecting rod 19.

[0052] The guide structure includes a fitting groove formed on the guide plate 4. The end of the connecting rod 19 is slidably disposed in the fitting groove. The fitting groove includes a horizontal groove 401, an inclined groove 402, a vertical groove 403, and a reset groove 404. A deflection plate 23 is rotatably installed at the connection between the inclined groove 402 and the horizontal groove 401. The deflection plate 23 is elastically connected to the guide plate 4 through a spring piece 24.

[0053] In particular, please see Figure 10 The aforementioned horizontal groove 401, inclined groove 402, vertical groove 403, and reset groove 404 constitute a "P"-shaped structure. In the initial state, the deflection plate 23 is parallel to the inclined groove 402, and the protrusion 1901 at the end of the connecting rod 19 engages with the end of the horizontal groove 401 away from the vertical groove 403. At this time, the connecting rod 19 is close to the feeding roller group 6. When the connecting rod 19 is driven by the driving structure to move along the length of the operating table 1 toward the unloading area 102, the connecting rod 19 can slide along the horizontal groove 401. During this process, the moving slide rail 8 can slide relative to the slide rod 9 until the protrusion 1901 contacts the deflection plate 23. Then, the deflection plate 23 can guide the protrusion 1901 to move into the inclined groove 402. Subsequently, accompanied by the driving... As the structure continues to push, the protruding post 1901 can slide along the inclined groove 402. During this process, the connecting rod 19 can drive the cutting blade 21 to move closer to the operating table 1. At the same time, the sliding rail 8 slides down to further compress the second spring 22. When the protruding post 1901 moves to the end of the stroke of the inclined groove 402, the cutting blade 21 contacts the operating table 1 and can cut the paper bag material 101. At this time, the protruding post 1901 is combined with the vertical groove 403. Then the second spring 22 releases elastic potential energy, which can drive the sliding rail 8 to drive the connecting rod 19 and the cutting blade 21 to quickly return to the initial position. At this time, the cutting blade 21 is away from the operating table 1 and will not affect the transportation process of the paper bag material 101 on the operating table 1.

[0054] Subsequently, the drive structure reverses its movement, pushing the connecting rod 19 to slide along the length of the operating table 1. During this process, the protrusion 1901 slides along the reset groove 404 until it contacts the deflection plate 23. The continuing movement of the connecting rod 19 forces the protrusion 1901 to squeeze the deflection plate 23, causing the deflection plate 23 to deflect towards the operating table 1. This forces the spring 24 to undergo elastic deformation until the deflection plate 23 remains parallel to the reset groove 404, at which point the deflection angle of the deflection plate 23 reaches its maximum. Then, under the push of the drive structure, the connecting rod 19 engages with the horizontal groove 401 until it separates from the deflection plate 23. The spring 24 releases its elastic potential energy, pushing the deflection plate 23 back to its initial position. The connecting rod 19 then slides along the horizontal groove 401 until the protrusion 1901 returns to its initial position. The drive structure then reverses its movement again, driving the connecting rod 19 and the cutting blade 21 to repeat the above process, enabling continuous cutting of the paper bag raw material 101.

[0055] During the above process, due to the cooperation between the deflection plate 23 and the spring piece 24, the connecting rod 19 can only move in a directional manner on the guide plate 4, so that when the drive structure performs reciprocating motion, it can drive the connecting rod 19 to perform reciprocating motion to continuously cut the paper bag raw material 101.

[0056] For details, please refer to Figure 4 , Figure 9 The driving structure includes cylinders 5. Two sets of cylinders 5 are symmetrically arranged along the width direction of the operating table 1. The two sets of cylinders 5 are respectively fixedly mounted on the two sets of guide plates 4. The extension and retraction ends of the two sets of cylinders 5 are fixedly provided with limit blocks 25. The connecting rod 19 passes through the limit block 25 and is placed in the sliding groove 2501 opened on the limit block 25.

[0057] Specifically, the connecting rod 19 can only slide along the length of the limiting block 25 within the sliding groove 2501, and the two sets of cylinders 5 are driven by the same drive motor. In the initial state, the telescopic end of the cylinder 5 protrudes, and the connecting rod 19 is located at the end of the stroke of the sliding groove 2501 away from the operating table 1. When the feeding roller group 6 is driven by the motor to start moving, the drive motor can be turned on synchronously. Then, the drive motor can drive the cylinder 5 to move, so that the telescopic end retracts. When the cylinder 5 retracts, the limiting block 25 can pull the connecting rod 19 toward the unloading area 102 to perform the above process. When the connecting rod 19 moves along the inclined groove 402, the component speed of the connecting rod 19 along the length of the guide plate 4 is consistent with the running speed of the paper bag material 101, so that the cutting blade 21 following the action of the connecting rod 19 remains relatively stationary with the transported paper bag material 101 along the length of the operating table 1, thereby ensuring the neatness of the edge of the paper bag material 101 after cutting.

[0058] For further details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 The operating table 1 is also equipped with a flattening component. When the elastic cutting structure is in operation, the flattening component is triggered and can stretch the paper bag material 101 to prevent wrinkles from appearing at the cut end of the paper bag material 101 during cutting.

[0059] In combination with the above, the connecting rod 19 drives the cutting blade 21 to move toward the operating table 1. During the cutting of the paper bag raw material 101, the flattening component is triggered, which can flatten the four corners of the section to be cut outwards. At this time, the cutting blade 21 cuts faster and the cut is neater.

[0060] For details, please refer to Figure 8 , Figure 9 The leveling assembly includes a sliding structure, which is arranged in four groups at the four corners of the operating table 1. Each group of sliding structures includes a guide rail 13 fixedly connected to the guide plate 4. A moving rod 11 is provided inside the guide rail 13. A first spring 15 is slidably arranged on the moving rod 11. One end of the first spring 15 is connected to a baffle formed on the moving rod 11, and the other end is connected to a first lifting cylinder 16 slidably arranged on the moving rod 11. The assembly also includes a positioning rod 12 fixedly arranged on the support plate 3. A second lifting cylinder 18 is slidably arranged on the positioning rod 12. The second lifting cylinder 18 is connected to the first lifting cylinder 16 through a hinge rod 17.

[0061] The aforementioned moving rod 11 is rotatably mounted with a pulley 14 on the side facing the operating table 1, and a third spring 26 is slidably arranged on the positioning rod 12. One end of the third spring 26 abuts against the end of the positioning rod 12 near the operating table 1, and the other end abuts against the second lifting cylinder 18. In particular, the third spring 26 is always in a compressed state. In the initial state, the compressed third spring 26 causes the second lifting cylinder 18 to abut against the limiting piece 1201 formed on the positioning rod 12. At this time, under the limiting connection of the fixed-length hinge rod 17, the second lifting cylinder 18 can pull the first lifting cylinder 16 closer to the positioning rod 12, causing the moving rod 11 to be placed at the end of the stroke of the guide rail 13 near the end of the positioning rod 12. At this time, under the action of gravity, the first spring 15 is in a stretched state, and a distance is formed between the pulley 14 and the operating table 1.

[0062] The four sets of second lifting cylinders 18 are fixedly connected by a connecting frame 10. The connecting frame 10 cooperates with the connecting plate 20 fixedly set between the two sets of moving slide rails 8, which can drive the four sets of second lifting cylinders 18 toward the operating table 1.

[0063] In summary, as the connecting rod 19 slides along the inclined groove 402 in cooperation with the driving and guiding structures, the connecting plate 20 gradually approaches the connecting frame 10 and then contacts it. As the connecting rod 19 descends, the connecting plate 20 presses down on the connecting frame 10, causing the four sets of second lifting cylinders 18 to descend. During this process, the moving rod 11 and the first lifting cylinder 16 descend synchronously with the second lifting cylinder 18 until the pulley 14 contacts the operating table 1. As the connecting frame 10 continues to descend, the second lifting cylinder 18, connected by the fixed-length hinge rod 17, pushes the first lifting cylinder 16 and the moving rod 11 away from the positioning rod 12 along the guide rail 13. At this time, the first lifting cylinder 16 descends synchronously along the axial direction of the moving rod 11, so that the first spring 15... The paper bag material 101 is compressed, allowing the pulley 14 to press down on it. Simultaneously, the expansion and movement of the four sets of pulleys 14 stretches the paper bag material 101 around its perimeter. At this point, the connecting rod 19 will move to the end of the inclined groove 402. Once the cutting blade 21 completes its cut, driven by the second spring 22, it moves rapidly away from the operating table 1. The third spring 26 releases its elastic potential energy, quickly driving the second lifting cylinder 18 upwards. During this process, the second lifting cylinder 18 pulls the first lifting cylinder 16 and the moving rod 11 back to their initial positions. As the moving rod 11 slides along the guide rail 13, the elastic potential energy stored in the first spring 15 is gradually released, causing the pressing force of the pulley 14 on the paper bag material 101 to gradually disappear, thus allowing the conveying roller 2 to normally convey the paper bag material 101.

[0064] A mechanized die-cutting method for bag production is also proposed, employing the mechanized die-cutting device for paper bag production as described above, including the following steps:

[0065] Step 1: Start the feeding roller group 6, and then the conveying roller 2 follows the feeding roller group 6 to move synchronously, which can continuously transport the paper bag raw material 101 to the unloading area 102;

[0066] Step 2: During the paper bag transportation process, the drive structure synchronously pushes the cutting blade 21 to keep the paper bag raw material 101 moving synchronously. During the movement, the cutting blade 21 moves synchronously towards the operating table 1 in the longitudinal direction with the help of the guide structure.

[0067] Step 3: During the approach process, the flattening component is triggered, and the four sets of sliding structures can first contact the paper bag material 101, and then press the four corners of the paper bag material 101 to prevent wrinkles from appearing on the cut edge of the paper bag material 101 during subsequent cutting.

[0068] Step 4: During the process of the paper bag material 101 being stretched out, the cutting blade 21 contacts the operating table 1 and can cut the paper bag material 101. Then the cutting blade 21 rises rapidly and returns to the initial position under the drive of the drive structure.

[0069] Step 5: Then, the cutting blade 21 repeats steps 2, 3, and 4 above to complete the repeated cutting of the paper bag material 101.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mechanized die-cutting device for paper bag production, characterized in that, include: The operating table (1) is equipped with a feeding component, which is capable of transporting the paper bag raw material (101). The operating table (1) is symmetrically fixed with two sets of support plates (3) along its width direction. A cutting assembly is provided between the two sets of support plates (3). The cutting assembly includes a driving structure and an elastic cutting structure. The driving structure can drive the elastic cutting structure to move along the length direction of the operating table (1). During the movement of the elastic cutting structure, the guide structure provided between the support plates (3) cooperates with the elastic cutting structure to force the elastic cutting structure to move towards the operating table (1) synchronously in the longitudinal direction, thereby enabling the paper bag raw material (101) placed on the operating table (1) to be cut. The operating table (1) is also equipped with a flattening component. During the operation of the elastic cutting structure, the flattening component is triggered and can stretch the paper bag material (101) to prevent wrinkles from appearing at the cut end of the paper bag material (101) during cutting.

2. The mechanized die-cutting device for paper bag production according to claim 1, characterized in that, The feeding assembly includes a feeding structure and a conveying structure. The feeding structure includes a feeding roller group (6) rotatably mounted on the operating table (1). The feeding roller group (6) includes a main feeding roller (601) and a secondary feeding roller (602). The main feeding roller (601) and the secondary feeding roller (602) are connected by a gear group (7).

3. The mechanized die-cutting device for paper bag production according to claim 2, characterized in that, The conveying structure includes conveying rollers (2) rotatably mounted on the support plate (3). Two sets of conveying rollers (2) are symmetrically arranged along the length direction of the support plate (3). The two sets of conveying rollers (2) are connected by belts, and one set of conveying rollers (2) is connected to the main feeding roller (601) by a linkage belt.

4. The mechanized die-cutting device for paper bag production according to claim 2, characterized in that, The elastic cutting structure includes a slide rod (9), and two sets of slide rods (9) are symmetrically arranged along the width direction of the operating table (1). The two sets of slide rods (9) are respectively fixed on the two sets of support plates (3), and a second spring (22) is slidably arranged on each set of slide rods (9). One end of the second spring (22) abuts against the slide rod (9), and the other end abuts against the movable slide rail (8) slidably arranged on the slide rod (9). A cutting element is fixedly arranged between the two sets of movable slide rails (8).

5. The mechanized die-cutting device for paper bag production according to claim 4, characterized in that, The cutting component includes a connecting rod (19) that connects two sets of the movable slide rails (8). The two ends of the connecting rod (19) are slidably connected to guide plates (4) fixedly mounted on two sets of support plates (3), and a cutting blade (21) is fixedly mounted on the connecting rod (19).

6. The mechanized die-cutting device for paper bag production according to claim 5, characterized in that, The guide structure includes a fitting groove formed on the guide plate (4), the end of the connecting rod (19) is slidably disposed in the fitting groove, and the fitting groove includes a horizontal groove (401), an inclined groove (402), a vertical groove (403), and a reset groove (404). A deflection plate (23) is rotatably installed at the connection between the inclined groove (402) and the horizontal groove (401), and the deflection plate (23) is elastically connected to the guide plate (4) through a spring piece (24).

7. The mechanized die-cutting device for paper bag production according to claim 5, characterized in that, The driving structure includes a cylinder (5). Two sets of cylinders (5) are symmetrically arranged along the width direction of the operating table (1). The two sets of cylinders (5) are respectively fixed on the two sets of guide plates (4). The extension and retraction ends of the two sets of cylinders (5) are fixedly provided with limit blocks (25). The connecting rod (19) passes through the limit block (25) and is placed in the sliding groove (2501) opened on the limit block (25).

8. The mechanized die-cutting device for paper bag production according to claim 5, characterized in that, The leveling assembly includes a sliding structure, which is arranged in four groups. The four groups of sliding structures are distributed at the four corners of the operating table (1). Each group of sliding structures includes a guide rail (13) fixedly connected to the guide plate (4). A moving rod (11) is provided in the guide rail (13). A first spring (15) is slidably arranged on the moving rod (11). One end of the first spring (15) is connected to a baffle formed on the moving rod (11), and the other end is connected to a first lifting cylinder (16) slidably arranged on the moving rod (11). It also includes a positioning rod (12) fixedly arranged on the support plate (3). A second lifting cylinder (18) is slidably arranged on the positioning rod (12). The second lifting cylinder (18) is connected to the first lifting cylinder (16) through a hinge rod (17).

9. The mechanized die-cutting device for paper bag production according to claim 8, characterized in that, The four sets of second lifting cylinders (18) are fixedly connected by a connecting frame (10). The connecting frame (10) cooperates with the connecting plate (20) between the two sets of moving slide rails (8) to drive the four sets of second lifting cylinders (18) toward the operating table (1).

10. A mechanized die-cutting method for paper bag production, employing the mechanized die-cutting device for paper bag production as described in claim 1, characterized in that, Includes the following steps: Step 1: Start the feeding roller group (6), and then the conveying roller (2) moves synchronously with the feeding roller group (6) to continuously transport the paper bag raw material (101) to the unloading area (102). Step 2: During the paper bag transportation process, the drive structure synchronously pushes the cutting blade (21) and the paper bag raw material (101) to maintain synchronous movement. During the movement, the cutting blade (21) moves synchronously towards the operating table (1) in the longitudinal direction with the cooperation of the guide structure. Step 3: During the approach process, the flattening component is triggered, and the four sets of sliding structures can first contact the paper bag material (101), and then press the four corners of the paper bag material (101) to prevent wrinkles from appearing on the cutting edge of the paper bag material (101) during subsequent cutting. Step 4: During the process of the paper bag material (101) being stretched out, the cutting blade (21) contacts the operating table (1) and can cut the paper bag material (101). Then the cutting blade (21) rises rapidly and then returns to the initial position under the drive of the drive structure. Step 5: Then, the cutting blade (21) repeats steps 2, 3, and 4 above to complete the repeated cutting of the paper bag material (101).

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