Continuous die-cutting machine for carton production

Abstract

The utility model discloses a continuous die cutting machine for carton production, and belongs to the technical field of carton die cutting. A continuous die-cutting machine for carton production comprises a rack, supporting bases, a first connecting shaft and a second connecting shaft which are symmetrically arranged are fixedly installed on the rack, an air duct is fixedly installed on the first connecting shaft and externally connected with a negative pressure pump, a pressing plate is fixedly installed on the second connecting shaft, and the continuous die-cutting machine further comprises a U-shaped rod and a disc rotationally installed below the rack. A connecting arm is eccentrically installed on the disc, a driving motor is arranged below the machine frame, a rack is fixedly installed on the second connecting shaft, a gear is fixedly installed on the first connecting shaft, heat and flattening pressure are applied to a paperboard through the second connecting shaft and the pressing plate along with movement of the U-shaped rod, the flatness of the paperboard is further improved, and meanwhile the flatness of the paperboard is improved. Due to meshing of the rack and the gear, the first connecting shaft and the air duct fixed to the first connecting shaft swing along with the rack and the gear and are used for cleaning the surface of the paperboard, and the surface quality and flatness of the paperboard are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of carton die-cutting technology, and in particular to a continuous die-cutting machine for carton production. Background Technology

[0002] As an indispensable part of the modern packaging industry, cardboard boxes are widely used in the transportation, storage and sales of goods. With the rapid development of e-commerce and the increasing demands of consumers for packaging quality, the cardboard box manufacturing industry is facing growing demand and technological challenges. In order to meet the market's need for efficient and high-quality cardboard box production, continuous die-cutting machines, as a key piece of equipment, play a vital role in the cardboard box production line.

[0003] In the traditional cardboard box production process, the die-cutting process is usually carried out using intermittent or semi-automatic equipment. Although these machines can complete basic die-cutting tasks, they have many shortcomings in terms of production efficiency, precision control, and adaptability. Furthermore, due to the lack of effective cardboard pretreatment and leveling methods, traditional equipment is prone to positional deviations or uneven cutting during die-cutting, which affects the quality of the final product. Utility Model Content

[0004] The purpose of this invention is to solve the problem that traditional equipment is prone to positional deviation or uneven cutting during die cutting due to the lack of effective cardboard pretreatment and leveling methods, which affects the quality of the final product. Therefore, a continuous die-cutting machine for carton production is proposed.

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

[0006] A continuous die-cutting machine for carton production includes a frame, on which symmetrically arranged support seats are fixedly mounted. A first connecting shaft and a second connecting shaft are slidably mounted between the symmetrical support seats. A fan duct is fixedly mounted on the first connecting shaft and externally connected to a negative pressure pump. A pressure plate is fixedly mounted on the second connecting shaft. The machine also includes a U-shaped rod slidably mounted below the frame, with both ends of the second connecting shaft passing through the support seats and fixedly connected to the U-shaped rod. A disc is rotatably mounted below the frame, with a connecting arm eccentrically mounted on the disc. The end of the connecting arm away from the disc is fixed to the U-shaped rod. A drive motor is disposed below the frame, and the output end of the drive motor is connected to the disc for transmission. A rack is fixedly mounted on the second connecting shaft, and a gear meshing with the rack is fixedly mounted on the first connecting shaft.

[0007] In order to effectively suck in and remove dust, paper scraps and other impurities from the surface of the cardboard, preferably, the air duct is provided with air holes and brushes, and the air holes and brushes are arranged at intervals.

[0008] To eliminate slight bends, wrinkles, or other unevenness in the cardboard, the pressure plate further includes a horizontal plate fixedly connected to the first connecting shaft and a heating plate parallel to the surface of the frame, the heating plate being fixed to the horizontal plate by bolts.

[0009] In order to convert the rotational motion of the disc into the reciprocating motion of the U-shaped rod, preferably, the connecting arm includes a first arm body fixedly connected to the U-shaped rod, a second arm body rotatably mounted at the end of the first arm body away from the U-shaped rod, a slider rotatably mounted on the second arm body, a groove adapted to the slider being opened on the disc, and an adjusting bolt rotatably mounted on the disc, the adjusting bolt being threadedly engaged with the slider.

[0010] For this purpose, preferably, limit sleeves are fixedly installed on both sides of the frame, and the U-shaped rod is slidably installed inside the limit sleeves.

[0011] To accommodate different thicknesses or types of cardboard materials, preferably, the support base has a first through groove, an adjusting screw is fixedly installed in the first through groove, one end of the adjusting screw passes through the support base and is fixedly installed with a rotating handle, an adjusting block is threaded on the adjusting screw, the adjusting block is slidably connected to the inner side wall of the first through groove, and the adjusting block is fixed to the first connecting shaft.

[0012] To provide necessary buffering and reset functions, preferably, the support base is provided with a second through groove, a guide shaft is provided in the second through groove, the guide shaft is fixed to the second connecting shaft, and a spring is fixedly connected between the guide shaft and the bottom surface of the second through groove.

[0013] To precisely define the die-cutting position of the cardboard, preferably, a slide bar and a bidirectional lead screw are installed between the symmetrical support seats. One end of the bidirectional lead screw passes through the support seat and is fixedly installed with an adjustment handle. A symmetrically arranged limiting plate is installed on the slide bar and the bidirectional lead screw to define the die-cutting position of the cardboard.

[0014] Compared with the prior art, this utility model provides a continuous die-cutting machine for carton production, which has the following advantages:

[0015] 1. This continuous die-cutting machine for carton production moves up and down together with the second connecting shaft and the pressure plate as the U-shaped rod moves. The pressure plate applies heat and flattening pressure to the cardboard, further improving the flatness of the cardboard. At the same time, due to the meshing of the rack and gear, the first connecting shaft and the air duct fixed on it swing together, which is used to clean the surface of the cardboard. By combining physical cleaning, negative pressure dust collection, and flattening treatment, the surface quality and flatness of the cardboard are effectively improved.

[0016] 2. This continuous die-cutting machine for carton production allows the initial position of the slider in the chute to be adjusted by rotating the adjusting bolt, thereby changing the range and amplitude of the connecting arm's movement. This provides operators with a simple way to fine-tune the equipment's operating parameters to adapt to cardboard materials of different thicknesses or hardnesses.

[0017] 3. In this continuous die-cutting machine for carton production, when the operator rotates the adjustment handle, the bidirectional lead screw rotates accordingly. Since the limiting plate and the bidirectional lead screw are connected by threads, the rotation of the bidirectional lead screw causes the limiting plates on both sides to move synchronously inward or outward along the lead screw. As the limiting plates move, the distance between them changes, thereby allowing for precise setting of the die-cutting width and position of the cardboard. This design ensures that the cardboard can be accurately positioned each time it is die-cut, improving the precision and consistency of die-cutting. The slide bar provides a stable sliding path for the limiting plate, ensuring the linearity and stability of its movement, avoiding lateral offset or swaying, and further improving the precision and reliability of the system. Attached Figure Description

[0018] Figure 1 This is a partial structural diagram of the frame of a continuous die-cutting machine for carton production proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the support structure of a continuous die-cutting machine for carton production proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the air duct structure of a continuous die-cutting machine for carton production proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the first connecting shaft and the second connecting shaft of a continuous die-cutting machine for carton production proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the pressure plate structure of a continuous die-cutting machine for carton production proposed in this utility model;

[0023] Figure 6 This is a schematic diagram of the disc structure of a continuous die-cutting machine for carton production proposed in this utility model.

[0024] In the diagram: 1. Frame; 2. Slide rod; 3. Two-way lead screw; 4. Support base; 401. First through groove; 402. Second through groove; 5. First connecting shaft; 6. Second connecting shaft; 601. Guide shaft; 7. Air duct; 701. Air hole; 702. Brush; 8. Pressure plate; 801. Horizontal plate; 802. Heating plate; 9. U-shaped rod; 10. Disc; 1001. Slide groove; 11. Connecting arm; 1101. First arm body; 1102. Second arm body; 12. Drive motor; 13. Rack; 14. Gear; 15. Slider; 16. Adjusting bolt; 17. Spring; 18. Adjusting lead screw; 19. Rotating handle; 20. Adjusting block; 21. Adjusting handle; 22. Limiting plate; 23. Limiting sleeve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example:

[0028] Reference Figures 1-6A continuous die-cutting machine for carton production includes a frame 1 for conveying and die-cutting cardboard. Symmetrically arranged support seats 4 are fixedly mounted on the frame 1. A first connecting shaft 5 and a second connecting shaft 6 are slidably mounted between the symmetrical support seats 4. A blower 7 is fixedly mounted on the first connecting shaft 5 and connected to a negative pressure pump for cleaning the cardboard surface. A pressure plate 8 is fixedly mounted on the second connecting shaft 6 for applying pressure and smoothing the cardboard. The machine also includes a U-shaped rod 9 slidably mounted below the frame 1. Both ends of the second connecting shaft 6 pass through the support seats 4 and are fixedly connected to the U-shaped rod 9. Furthermore, limit sleeves 23 are fixedly mounted on both sides of the frame 1. The interior of the limit sleeves 23 is smoothly treated to reduce friction and ensure smooth up-and-down sliding of the U-shaped rod 9. The U-shaped rod 9 is slidably mounted within the limit sleeves 23, which provide a precise guide path for the U-shaped rod 9. To ensure linear motion during vertical movement and prevent lateral shifting or swaying, thus improving the stability of the entire system, a rotating disc 10 is mounted below the frame 1. A connecting arm 11 is eccentrically mounted on the disc 10, with one end of the connecting arm 11 away from the disc 10 fixed to a U-shaped rod 9. When the disc 10 rotates, the connecting arm 11 drives the U-shaped rod 9 to reciprocate vertically. Preferably, there are two discs 10, symmetrically arranged, with a drive shaft fixedly connected between the two discs 10 to ensure synchronous rotation. A drive motor 12 is located below the frame 1, and the output end of the drive motor 12 is connected to the disc 10 via a drive belt. Specifically, the output end of the drive motor 12 is connected to the drive shaft via a belt drive. A rack 13 is fixedly mounted on the first connecting shaft 5, and a gear 14 that meshes with the rack 13 is fixedly mounted on the second connecting shaft 6.

[0029] When the equipment is started, the drive motor 12 starts running, transmitting power to the transmission shaft via a belt, causing the two discs 10 to rotate synchronously. The connecting arm 11 on the disc 10 then moves eccentrically, pushing the U-shaped rod 9 to move up and down reciprocally. As the U-shaped rod 9 moves, the second connecting shaft 6 and the pressure plate 8 also move up and down together. The pressure plate 8 applies heat and flattening pressure to the cardboard, further improving the flatness of the cardboard. At the same time, due to the meshing of the rack 13 and the gear 14, the first connecting shaft 5 and the air duct 7 fixed on it swing along, cleaning the surface of the cardboard. After the above treatment, the flatter and cleaner cardboard is sent to the die-cutting area, ready to undergo precise cutting. By combining physical cleaning and negative pressure vacuuming, as well as flattening treatment, the surface quality and flatness of the cardboard are effectively improved.

[0030] The air duct 7 is provided with air holes 701 and brushes 702, which are arranged alternately.

[0031] When the negative pressure pump is working, it generates suction through the air hole 701, which can effectively suck up and remove dust, paper scraps and other impurities from the surface of the cardboard. This helps to keep the surface of the cardboard clean and avoid quality problems caused by foreign objects in the subsequent die-cutting process. At the same time, the brush 702 gently touches the surface of the cardboard, which can physically remove large particles or strongly adhering substances that are not easily carried away by suction.

[0032] In addition, the brush 702 can help comb the fibers on the surface of the cardboard and reduce the electrostatic adsorption effect. While gently cleaning, the brush 702 can also apply slight pressure to the cardboard, which helps to initially flatten the surface of the cardboard and prepare it for further processing by the pressing plate 8.

[0033] The pressure plate 8 includes a horizontal plate 801 fixedly connected to the second connecting shaft 6, and a heating plate 802 parallel to the surface of the frame 1. The heating plate 802 is fixed to the horizontal plate 801 by bolts, allowing the heating plate 802 to be disassembled or replaced as needed. The heating plate 802 usually integrates an electric heating element, which can provide a uniform heat distribution, soften the cardboard fibers, and make them easier to flatten.

[0034] When the pressure plate 8 moves downward with the second connecting shaft 6, it applies a certain pressure to the cardboard below. This pressure helps to eliminate slight bends, wrinkles, or other unevenness in the cardboard. Because the design of the pressure plate 8 can ensure the uniform distribution of pressure, a good flatness effect can be achieved without affecting the structural integrity of the cardboard. The heat provided by the heating plate 802 can soften the fibers on the surface of the cardboard, further helping to release internal stress and making the cardboard flatter. The heat can also reduce static electricity inside the cardboard, preventing paper scraps or other small particles from adhering to the surface of the cardboard, thereby improving the die-cutting quality.

[0035] The connecting arm 11 includes a first arm body 1101 fixedly connected to the U-shaped rod 9. A second arm body 1102 is rotatably mounted on the end of the first arm body 1101 away from the U-shaped rod 9. A slider 15 is rotatably mounted on the second arm body 1102. A groove 1001 adapted to the slider 15 is opened on the disc 10. An adjusting bolt 16 is rotatably mounted on the disc 10. The adjusting bolt 16 is threadedly engaged with the slider 15.

[0036] When the drive motor 12 starts, its output power is transmitted to the drive shaft via a belt, and then the drive shaft drives two symmetrically arranged discs 10 to rotate synchronously. The rotation of the discs 10 causes the slider 15 in the slide groove 1001 to move along a predetermined trajectory. Since the slider 15 is connected to the second arm 1102, this movement will cause the second arm 1102 to swing around its connection point with the first arm 1101. The swing of the second arm 1102 causes the entire connecting arm 11 to move. This movement is transmitted to the second connecting shaft 6 through the U-shaped rod 9, and finally realizes the synchronous up and down movement of the pressure plate 8. By rotating the adjusting bolt 16, the initial position of the slider 15 in the slide groove 1001 can be adjusted, thereby changing the range and amplitude of the movement of the connecting arm 11. This provides the operator with a simple way to fine-tune the working parameters of the equipment to adapt to cardboard materials of different thicknesses or hardnesses.

[0037] The support base 4 has a first through groove 401. An adjusting screw 18 is fixedly installed in the first through groove 401. One end of the adjusting screw 18 passes through the support base 4 and is fixedly installed with a rotating handle 19. An adjusting block 20 is threaded on the adjusting screw 18. The adjusting block 20 is slidably connected to the inner side wall of the second through groove 402. The adjusting block 20 is fixed to the first connecting shaft 5.

[0038] When the operator rotates the rotary handle 19, the adjusting screw 18 rotates accordingly. Since the adjusting block 20 and the adjusting screw 18 are connected by a thread, the rotation of the adjusting screw 18 will cause the adjusting block 20 to move up and down along the screw. As the adjusting block 20 moves up and down, the first connecting shaft 5 and the air duct 7 on it also move up and down. In this way, the distance between the air duct 7 and the paper can be precisely adjusted to accommodate paperboard materials of different thicknesses.

[0039] The support base 4 has a second through groove 402, and a guide shaft 601 is provided in the second through groove 402. The guide shaft 601 is fixed to the second connecting shaft 6. A spring 17 is fixedly connected between the guide shaft 601 and the bottom surface of the second through groove 402. When the second connecting shaft 6 moves downward, the spring 17 is compressed, absorbing the impact force and reducing the impact on other parts of the equipment. The presence of the spring 17 also increases the overall stability of the system and prevents unnecessary vibration caused by external factors.

[0040] When the drive motor 12 drives the U-shaped rod 9 to move up and down through the disc 10 and the connecting arm 11, the second connecting shaft 6 also moves up and down accordingly. Since the guide shaft 601 is fixed on the second connecting shaft 6, it will also move synchronously along the second through groove 402. During the downward movement of the second connecting shaft 6, the guide shaft 601 gradually compresses the spring 17. This not only absorbs the impact force during the movement, but also stores energy for the subsequent reset action. When it is necessary to return, the spring 17 releases the stored energy, pushing the guide shaft 601 and the second connecting shaft 6 to move upward and return to the starting position, thereby improving the motion accuracy and reliability of the entire system.

[0041] The continuous die-cutting machine for carton production also includes a slide bar 2 and a bidirectional lead screw 3 installed between symmetrical support seats 4. One end of the bidirectional lead screw 3 passes through the support seat 4 and is fixedly installed with an adjustment handle 21, and symmetrically arranged limiting plates 22 are installed on the slide bar 2 and the bidirectional lead screw 3 to limit the die-cutting position of the cardboard.

[0042] When the operator rotates the adjusting handle 21, the bidirectional lead screw 3 rotates accordingly. Since the limiting plate 22 and the bidirectional lead screw 3 are connected by threads, the rotation of the bidirectional lead screw 3 will cause the limiting plates 22 on both sides to move inward or outward synchronously along the lead screw. As the limiting plates 22 move, the distance between them changes, thereby allowing the die-cutting width and position of the cardboard to be set precisely. This design ensures that the cardboard can be accurately positioned each time it is die-cut, improving the accuracy and consistency of die-cutting. The slide bar 2 provides a stable sliding path for the limiting plate 22, ensuring the linearity and stability of its movement, avoiding lateral offset or wobbling, and further improving the accuracy and reliability of the system.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A continuous die-cutting machine for carton production, comprising a frame (1), characterized in that, The frame (1) is fixedly mounted with symmetrically arranged support seats (4). A first connecting shaft (5) and a second connecting shaft (6) are slidably installed between the symmetrical support seats (4). A wind duct (7) is fixedly mounted on the first connecting shaft (5) and externally connected to a negative pressure pump. A pressure plate (8) is fixedly mounted on the second connecting shaft (6). The frame (1) also includes a U-shaped rod (9) slidably installed below the frame (1). Both ends of the second connecting shaft (6) pass through the support seats (4) and are fixedly connected to the U-shaped rod (9). A rotating disc (10) is mounted below the frame (1). A connecting arm (11) is eccentrically mounted on the disc (10). One end of the connecting arm (11) away from the disc (10) is fixed to the U-shaped rod (9). A drive motor (12) is provided below the frame (1). The output end of the drive motor (12) is connected to the disc (10) for transmission. Among them, a rack (13) is fixedly installed on the second connecting shaft (6), and a gear (14) that meshes with the rack (13) is fixedly installed on the first connecting shaft (5).

2. The continuous die-cutting machine for carton production according to claim 1, characterized in that, The air duct (7) is provided with air holes (701) and brushes (702), and the air holes (701) and brushes (702) are arranged at intervals.

3. The continuous die-cutting machine for carton production according to claim 2, characterized in that, The pressure plate (8) includes a horizontal plate (801) fixedly connected to the second connecting shaft (6), and A heating plate (802) is parallel to the surface of the frame (1), and the heating plate (802) is fixed to the cross plate (801) by bolts.

4. A continuous die-cutting machine for carton production according to claim 1, characterized in that, The connecting arm (11) includes a first arm body (1101) fixedly connected to the U-shaped rod (9). A second arm body (1102) is rotatably mounted on the end of the first arm body (1101) away from the U-shaped rod (9). A slider (15) is rotatably mounted on the second arm body (1102). A groove (1001) adapted to the slider (15) is opened on the disc (10). An adjusting bolt (16) is rotatably mounted on the disc (10). The adjusting bolt (16) is threadedly engaged with the slider (15).

5. A continuous die-cutting machine for carton production according to claim 1, characterized in that, Limit sleeves (23) are fixedly installed on both sides of the frame (1), and the U-shaped rod (9) is slidably installed in the limit sleeves (23).

6. A continuous die-cutting machine for carton production according to claim 1, characterized in that, The support base (4) has a first through groove (401). An adjusting screw (18) is fixedly installed in the first through groove (401). One end of the adjusting screw (18) passes through the support base (4) and is fixedly installed with a rotating handle (19). An adjusting block (20) is threaded on the adjusting screw (18). The adjusting block (20) is slidably connected to the inner side wall of the first through groove (401). The adjusting block (20) is fixed to the first connecting shaft (5).

7. A continuous die-cutting machine for carton production according to claim 1, characterized in that, The support base (4) has a second through groove (402), and a guide shaft (601) is provided in the second through groove (402). The guide shaft (601) is fixed to the second connecting shaft (6), and a spring (17) is fixedly connected between the guide shaft (601) and the bottom surface of the second through groove (402).

8. A continuous die-cutting machine for carton production according to claim 1, characterized in that, It also includes a slide rod (2) and a double-acting screw (3) installed between the symmetrical support seats (4), one end of the double-acting screw (3) passing through the support seat (4) and fixedly mounted with an adjusting handle (21), and Symmetrically arranged limiting plates (22) are installed on the slide bar (2) and the bidirectional lead screw (3) to limit the die-cutting position of the cardboard.

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