Automatic flattening and die cutting mechanism for packaging paperboards

Abstract

The utility model relates to the technical field of flattening die-cutting machines, and discloses a packaging paperboard automatic flattening die-cutting mechanism which comprises a conveying rack, a flattening machine and a mounting frame are arranged at the top of the conveying rack, a hydraulic machine is mounted at the top of the mounting frame, the output end of the hydraulic machine is fixedly connected with a connecting plate, and the output end of the connecting plate is fixedly connected with the conveying rack. A buffer assembly is mounted at the bottom of the connecting plate, a butt joint plate is arranged at the bottom of the buffer assembly, a fixing assembly is mounted at the bottom of the butt joint plate, a mold is slidably connected to the bottom of the butt joint plate, and a sensor is mounted on the inner side of the mounting frame. The buffering assembly comprises a connecting frame, and the outer side of the connecting frame is slidably connected with a sliding block. The die contacts with the carton, the butt joint plate pushes the sliding block to extrude the buffer spring through the connecting rod, the spring deforms to absorb overload pressure of a hydraulic machine, damage of rigid impact to a cutting edge of the die is reduced, pressure transmission is smoother through the buffer design, and the service life of the die is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of flattening and die-cutting machine technology, and in particular to an automated flattening and die-cutting mechanism for packaging paperboard. Background Technology

[0002] The flattening and die-cutting mechanism is a highly efficient automated equipment mainly used for flattening, die-cutting, and forming of cardboard. Through a conveyor belt system, the cardboard is automatically fed into the flattening device to ensure a flat surface, and then enters the die-cutting unit, where it is cut by a precision mold. This equipment features high precision and high efficiency, is suitable for mass production, and is widely used in industries such as packaging and printing, significantly improving production efficiency and product quality.

[0003] The flattening and die-cutting mechanism mainly consists of a conveyor belt system, a flattening device, a die-cutting unit, and a control system. The cardboard is fed into the flattening device via the conveyor belt to eliminate warping and ensure flatness. Then it enters the die-cutting unit, where it is cut and shaped by a precision mold. The entire process is coordinated by an automated control system, achieving efficient, precise, and continuous operation. It is suitable for large-volume cardboard processing and significantly improves production efficiency and quality.

[0004] Existing flattening die-cutting mechanisms can perform flattening die-cutting operations efficiently and accurately continuously. However, during cardboard die-cutting, due to the lack of a buffer mechanism, excessive pressure can easily cause the die edge to crack and become dull, accelerating wear and shortening its lifespan, while also increasing maintenance costs. Therefore, an automated flattening die-cutting mechanism for packaging cardboard is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automated flattening and die-cutting mechanism for packaging cardboard, which aims to improve the problems of the lack of a buffer mechanism in the existing technology, and the fact that excessive die-cutting pressure can easily accelerate mold wear and shorten its life.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automated die-cutting mechanism for packaging cardboard includes a conveyor frame. A flattening machine and a mounting frame are mounted on the top of the conveyor frame. A hydraulic press is mounted on the top of the mounting frame. A connecting plate is fixedly connected to the output end of the hydraulic press. A buffer assembly is mounted on the bottom of the connecting plate. A docking plate is located at the bottom of the buffer assembly. A fixing assembly is mounted on the bottom of the docking plate. A mold is slidably connected to the bottom of the docking plate. A sensor is mounted on the inner side of the mounting frame. The buffer assembly includes a connecting frame. A sliding block is slidably connected to the outer side of the connecting frame. A connecting rod is rotatably connected to the bottom of the sliding block. The connecting rod is rotatably connected to the top of the docking plate.

[0008] As a further description of the above technical solution:

[0009] A buffer spring is fitted around the outer periphery of the connecting frame, and the buffer spring is disposed on the side of the sliding block;

[0010] As a further description of the above technical solution:

[0011] The fixing component includes a protective shell, which is fixedly connected to the bottom of the docking plate. A sliding rod is slidably connected inside the protective shell. A locking block is fixedly connected to one end of the sliding rod, and a rotating handle is rotatably connected to the other end of the sliding rod.

[0012] As a further description of the above technical solution:

[0013] A baffle is fixedly connected to the side of the protective shell, the slide rod is slidably connected inside the baffle, and a telescopic spring is sleeved on the outer periphery of the slide rod. The telescopic spring is disposed between the locking block and the baffle.

[0014] As a further description of the above technical solution:

[0015] The mold has a slot on its side, and the locking block engages with the slot.

[0016] As a further description of the above technical solution:

[0017] The rotary handle has a limiting groove inside, and the slide rod is rotatably connected inside the limiting groove.

[0018] As a further description of the above technical solution:

[0019] A positioning block is fixedly connected to the inner side of the mold, and a positioning groove is provided on the side of the docking plate. The positioning block is slidably connected inside the positioning groove.

[0020] As a further description of the above technical solution:

[0021] A telescopic rod is fixedly connected to the bottom of the connecting plate, and the end of the telescopic rod is fixedly connected to the top of the docking plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, when the mold contacts the carton, the mating plate is subjected to force, which drives the connecting rod to push the sliding block to squeeze the buffer spring. The spring deformation absorbs the instantaneous overload pressure of the hydraulic press, effectively reducing the damage to the mold cutting edge caused by rigid impact. This buffer design makes the pressure transmission smoother and more uniform, avoiding mold cracking, dulling or abnormal wear caused by sudden pressure increase, significantly extending the service life of the mold, while reducing the downtime maintenance cost caused by frequent mold replacement, and improving production continuity and economy.

[0024] 2. In this utility model, the sliding rod and the locking block are moved by rotating the handle. The mold can be quickly disassembled and assembled by disengaging and locking the locking block with the mold slot. No complicated tools are required when changing the mold. The mold can be positioned and fixed by simply rotating the handle and using the elastic reset of the telescopic spring. The operation is simple and efficient. The modular design greatly shortens the mold change time and reduces manual intervention. At the same time, the spring pressure ensures that the locking is stable and prevents the mold from loosening or shifting during processing. It takes into account both efficiency and safety and is suitable for flexible production needs of multiple batches. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of an automated flattening and die-cutting mechanism for packaging paperboard proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the docking plate of an automated pressing and die-cutting mechanism for packaging paperboard proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the connecting frame of an automated flattening and die-cutting mechanism for packaging paperboard proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the mold structure for an automated flattening and die-cutting mechanism for packaging paperboard proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the slide bar of an automated flattening and die-cutting mechanism for packaging paperboard proposed in this utility model.

[0030] Legend:

[0031] 1. Conveyor frame; 2. Flattening machine; 3. Mounting frame; 4. Hydraulic press; 5. Connecting plate; 6. Butt joint plate; 7. Mold; 8. Connecting frame; 9. Sliding block; 10. Connecting rod; 11. Buffer spring; 12. Telescopic rod; 13. Protective shell; 14. Slide rod; 15. Locking block; 16. Rotating handle; 17. Baffle; 18. Telescopic spring; 19. Locking groove; 20. Limiting groove; 21. Positioning block; 22. Positioning groove; 23. Sensor. Detailed Implementation

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

[0033] Reference Figure 1 - Figure 3This utility model provides an embodiment of an automated packaging cardboard flattening and die-cutting mechanism, comprising a conveyor frame 1, a flattening machine 2 and a mounting frame 3 on the top of the conveyor frame 1, a hydraulic press 4 on the top of the mounting frame 3, a connecting plate 5 fixedly connected to the output end of the hydraulic press 4, a buffer assembly on the bottom of the connecting plate 5, a docking plate 6 on the bottom of the buffer assembly, a fixing assembly on the bottom of the docking plate 6, a mold 7 slidably connected to the bottom of the docking plate 6, and a sensor 23 installed on the inner side of the mounting frame 3; the buffer assembly includes a connecting frame 8, a sliding block 9 slidably connected to the outer side of the connecting frame 8, connecting various structures using the connecting frame 8, a connecting rod 10 rotatably connected to the bottom of the sliding block 9, the connecting rod 10 rotatably connected to the top of the docking plate 6, connecting the docking plate 6 and the sliding block 9 using the connecting rod 10. A buffer spring 11 is sleeved on the outer periphery of the connecting frame 8, the buffer spring 11 is located on the side of the sliding block 9, and the movement of the sliding block 9 presses the buffer spring 11 to relieve the pressure on it.

[0034] Reference Figure 1 , Figure 4 and Figure 5 The fixing assembly includes a protective shell 13, which is fixedly connected to the bottom of the docking plate 6. The protective shell 13 connects various structures. A slide rod 14 is slidably connected inside the protective shell 13. One end of the slide rod 14 is fixedly connected to a locking block 15, and the other end of the slide rod 14 is rotatably connected to a rotating handle 16. Rotating the rotating handle 16 moves the slide rod 14 and the locking block 15. A baffle 17 is fixedly connected to the side of the protective shell 13. The slide rod 14 is slidably connected inside the baffle 17, protecting the internal structures. A telescopic spring 18 is sleeved around the outer periphery of the slide rod 14, positioned between the locking block 15 and the baffle 17. The pressure generated by the interaction of the telescopic spring 18 and the baffle 17 causes the slide rod 14 and the locking block 15 to move inward. A slot 19 is formed on the side of the mold 7. The locking block 15 engages with the slot 19, and the locking block 15 moves inward to engage inside the slot 19.

[0035] Reference Figure 3 - Figure 5 The rotating handle 16 has a limiting groove 20 inside, and the slide rod 14 is rotatably connected inside the limiting groove 20. By setting the limiting groove 20, the rotation position of the rotating handle 16 is limited. A positioning block 21 is fixedly connected to the inner side of the mold 7, and a positioning groove 22 is opened on the side of the docking plate 6. The positioning block 21 is slidably connected inside the positioning groove 22. Through the cooperation of the positioning block 21 and the positioning groove 22, the installation position of the docking plate 6 is fixed. A telescopic rod 12 is fixedly connected to the bottom of the connecting plate 5, and the end of the telescopic rod 12 is fixedly connected to the top of the docking plate 6. The telescopic rod 12 is used to support the movement trajectory of the docking plate 6.

[0036] Working principle: The packaging cardboard to be processed is transported on the conveyor. When the sensor 23 detects the packaging cardboard, it triggers the information to the control system. The control system stops the conveyor and starts the hydraulic press 4 to drive the mold 7 to move down for die cutting. When the mold 7 contacts the packaging carton, the mating plate 6 is forced to move towards the connecting plate 5. The connecting rod 10 pushes the sliding block 9 to move outward to compress the buffer spring 11, which relieves the excessive pressure applied by the hydraulic press 4 and improves the service life of the mold 7. After the die cutting is completed, the output end of the hydraulic press 4 returns to its original position and transmits the information to the control system to resume the operation of the conveyor and carry out the unloading process.

[0037] Rotate the handle 16 to move the slide bar 14 and the locking block 15 outward. The locking block 15 moves out of the slot 19 of the mold 7, and the currently used mold 7 can be removed. Slide the mold 7 to be replaced into the docking plate 6. Rotate the handle 16 in the opposite direction and, with the pressure applied by the telescopic spring 18, move the slide bar 14 and the locking block 15 inward. The locking block 15 locks into the slot 19, completing the mold replacement work and improving the efficiency of mold replacement.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. An automated die-cutting mechanism for packaging cardboard, comprising a conveyor frame (1), characterized in that: A flattening machine (2) and a mounting frame (3) are provided on the top of the conveyor frame (1). A hydraulic press (4) is installed on the top of the mounting frame (3). A connecting plate (5) is fixedly connected to the output end of the hydraulic press (4). A buffer assembly is installed at the bottom of the connecting plate (5). A docking plate (6) is provided at the bottom of the buffer assembly. A fixing assembly is installed at the bottom of the docking plate (6). A mold (7) is slidably connected to the bottom of the docking plate (6). A sensor (23) is installed on the inner side of the mounting frame (3). The buffer assembly includes a connecting frame (8), a sliding block (9) is slidably connected to the outside of the connecting frame (8), a connecting rod (10) is rotatably connected to the bottom of the sliding block (9), and the connecting rod (10) is rotatably connected to the top of the docking plate (6).

2. The automated flattening and die-cutting mechanism for packaging paperboard according to claim 1, characterized in that: A buffer spring (11) is fitted around the outer periphery of the connecting frame (8), and the buffer spring (11) is located on the side of the sliding block (9).

3. The automated flattening and die-cutting mechanism for packaging paperboard according to claim 1, characterized in that: The fixing component includes a protective shell (13), which is fixedly connected to the bottom of the docking plate (6). A slide rod (14) is slidably connected inside the protective shell (13). A locking block (15) is fixedly connected to one end of the slide rod (14), and a rotating handle (16) is rotatably connected to the other end of the slide rod (14).

4. The automated flattening and die-cutting mechanism for packaging paperboard according to claim 3, characterized in that: A baffle (17) is fixedly connected to the side of the protective shell (13). The slide rod (14) is slidably connected inside the baffle (17). A telescopic spring (18) is sleeved on the outer periphery of the slide rod (14). The telescopic spring (18) is disposed between the locking block (15) and the baffle (17).

5. The automated flattening and die-cutting mechanism for packaging paperboard according to claim 3, characterized in that: The mold (7) has a slot (19) on its side, and the card block (15) engages with the slot (19).

6. The automated flattening and die-cutting mechanism for packaging paperboard according to claim 3, characterized in that: The rotating handle (16) has a limiting groove (20) inside, and the slide rod (14) is rotatably connected inside the limiting groove (20).

7. The automated flattening and die-cutting mechanism for packaging paperboard according to claim 3, characterized in that: The mold (7) is fixedly connected to the inner side of a positioning block (21), and the side of the docking plate (6) is provided with a positioning groove (22). The positioning block (21) is slidably connected inside the positioning groove (22).

8. The automated flattening and die-cutting mechanism for packaging paperboard according to claim 1, characterized in that: The bottom of the connecting plate (5) is fixedly connected to a telescopic rod (12), and the end of the telescopic rod (12) is fixedly connected to the top of the docking plate (6).

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