Positioning and cutting device for meal box production
By designing a positioning and cutting device for lunchbox production, and utilizing the cooperation of a positioning frame and a movable plate, the problem of inaccurate positioning during the cutting process of plastic lunchboxes was solved, achieving accurate positioning and cutting of lunchboxes, and improving product quality and material utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI LONGJUN AIKE ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-03
AI Technical Summary
The lack of positioning during the downward movement of the punch in plastic lunch boxes leads to inaccurate cutting positions, large dimensional deviations in the lunch boxes, affecting assembly and aesthetics, and increasing the defect rate.
A positioning and cutting device for lunch box production was designed, including a worktable, a base, a support block, a positioning frame, a lifting mechanism, a positioning mechanism, and a moving mechanism. Through the cooperation of the positioning frame and the movable plate, the plastic lunch box is accurately positioned before cutting. The plastic strip is clamped by a drive cylinder and a pressure block, and the movable plate drives the plastic strip to move towards the positioning frame for cutting.
It enables accurate positioning and cutting of plastic lunch boxes, reduces dimensional deviations, improves product aesthetics and assembly quality, reduces defect rates, and saves raw materials.
Smart Images

Figure CN224446098U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lunch box production technology, and in particular to a positioning and cutting device for lunch box production. Background Technology
[0002] Plastic food containers are common in modern catering packaging. They are made of plastics such as polypropylene (PP) and polystyrene (PS) and have significant advantages: they are lightweight, durable, and easy to carry; they have good sealing properties and effectively prevent leakage; they are inexpensive and suitable for large-scale use. In addition, transparent or semi-transparent designs make it easy to display food, and some models are microwave-safe (please check the label). However, plastic food containers have a long degradation period and can easily cause environmental pollution. It is recommended to prioritize biodegradable materials or reuse them to reduce the ecological burden.
[0003] During the downward movement of the punch, the plastic lunch box is rapidly pressed into the die by inertia and material flow. Due to the lack of positioning, the lunch box is prone to displacement, resulting in inaccurate cutting position, large dimensional deviations, and affecting subsequent assembly or use. Moreover, the cut edges may be uneven, reducing the overall aesthetics of the lunch box and affecting product quality. At the same time, the unstable cutting state will cause uneven stress on the lunch box, increasing the defect rate and wasting raw materials. Therefore, this utility model proposes a positioning and cutting device for lunch box production to solve the above problems. Utility Model Content
[0004] To address the aforementioned problems, this utility model proposes a positioning and cutting device for lunchbox production, which solves the problem in the prior art where the lack of positioning makes the lunchbox prone to displacement, resulting in inaccurate cutting positions, large dimensional deviations of the lunchbox, and affecting subsequent assembly or use.
[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a positioning and cutting device for lunch box production, including a workbench, a base, support blocks and a positioning frame. The top of the workbench is fixedly connected to the base, and support blocks are symmetrically fixedly connected to both sides of the base. The top of the support blocks is fixedly connected to the positioning frame. The top of the workbench is provided with a lifting mechanism, and the bottom end of the lifting mechanism is fixedly connected to a cutting table. The bottom end of the cutting table is provided with a cutting knife holder. A movable plate is provided on one side of the workbench, and a positioning mechanism is provided on the movable plate. The interior of the movable plate is provided with a hollow groove.
[0006] A further improvement is made in that: the positioning mechanism includes a fixed frame, a shelf, a drive cylinder and a pressure block, a fixed frame is symmetrically fixedly connected to one side of the movable plate, a shelf is fixedly connected to the bottom end of the fixed frame, a drive cylinder is fixedly installed at the top end of the fixed frame, and a pressure block is fixedly connected to the output end of the drive cylinder.
[0007] A further improvement is that a movable beam is fixedly connected to one side of the movable plate, and a moving mechanism matching the movable beam is provided on the top of the workbench.
[0008] A further improvement is made in that: the moving mechanism includes a lead screw, a rotary motor, and a guide rod. A guide rod is fixedly connected to one side of the top of the worktable, and the guide rod is slidably connected to one side of the movable beam. A lead screw is rotatably connected to the other side of the top of the worktable, and one end of the lead screw passes through the other side of the movable beam and is threadedly connected to it. A rotary motor is fixedly installed on the other side of the top of the worktable, and the output end of the rotary motor is fixedly connected to one end of the lead screw.
[0009] A further improvement is that the lifting mechanism includes a top frame, a lifting cylinder, and a lifting plate. The top frame is fixedly connected to the top of the worktable, the lifting cylinder is fixedly installed on the top of the top frame, the output end of the lifting cylinder is fixedly connected to the lifting plate, and the bottom of the lifting plate is fixedly connected to the top of the cutting table.
[0010] A further improvement is made in that: a set of telescopic rods are symmetrically arranged between the base and the lifting plate. The telescopic rods include an inner rod and an outer rod. The top end of the inner rod is fixedly connected to the bottom of the lifting plate, and the bottom end of the outer rod is fixedly connected to the top of the base. A set of damping shock absorbers are symmetrically arranged between the base and the lifting plate.
[0011] A further improvement is that a pusher plate is fixedly connected to the bottom of the movable plate, the bottom of the pusher plate is fitted to the top of the base, and a slot is provided on one side of the worktable, with the pusher plate and the slot being parallel to each other.
[0012] The beneficial effects of this utility model are as follows: the two sides of the plastic strip are placed on two placement plates respectively, and the output end of the drive cylinder can drive the pressure block to move downward. The pressure block cooperates with the placement plate to clamp the plastic strip, thereby fixing the plastic strip on the movable plate. The movable plate drives the plastic strip to move towards the positioning frame, so that multiple plastic lunch boxes are embedded inside the positioning frame. This solves the problem in the prior art that due to the lack of positioning, the lunch boxes are prone to displacement, resulting in inaccurate cutting positions, large deviations in the size of the lunch boxes, and affecting subsequent assembly or use. Attached Figure Description
[0013] Figure 1 This is the front view of the present invention;
[0014] Figure 2 This is a schematic diagram of the feeding platform structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the positioning mechanism structure of this utility model;
[0016] Figure 4 This is a bottom view of the cutting table of this utility model;
[0017] Figure 5 This utility model Figure 2 A magnified view of part A.
[0018] The components are as follows: 1. Workbench; 2. Base; 3. Support block; 4. Positioning frame; 5. Cutting table; 6. Cutting knife holder; 7. Movable plate; 8. Empty slot; 9. Fixed frame; 10. Storage plate; 11. Drive cylinder; 12. Pressure block; 13. Movable beam; 14. Lead screw; 15. Rotary motor; 16. Top frame; 17. Lifting cylinder; 18. Lifting plate; 19. Damping shock absorber; 20. Telescopic rod; 21. Guide rod; 22. Push plate. Detailed Implementation
[0019] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.
[0020] according to Figure 1-5 As shown in the figure, this embodiment proposes a positioning and cutting device for lunch box production, including a workbench 1, a base 2, a support block 3, and a positioning frame 4. The base 2 is fixedly connected to the top of the workbench 1, and the support blocks 3 are symmetrically fixedly connected to both sides of the base 2. The positioning frame 4 is fixedly connected to the top of the support blocks 3. A lifting mechanism is provided on the top of the workbench 1, and a cutting table 5 is fixedly connected to the bottom of the lifting mechanism. A cutter holder 6 is provided at the bottom of the cutting table 5. A movable plate 7 is provided on one side of the workbench 1, and a positioning mechanism is provided on the movable plate 7. A slot 8 is provided inside the movable plate 7. The positioning mechanism fixes a plastic strip of multiple plastic lunch boxes onto the movable plate 7. The movable plate 7 can drive the plastic strip to move towards the positioning frame 4, so that multiple plastic lunch boxes are embedded inside the positioning frame 4. Then the plastic strip is released and reset. The lifting mechanism drives the cutting table 5 to move downward. The cutting table 5 cuts the multiple plastic lunch boxes on the plastic strip into individual pieces through the cutter holder 6.
[0021] The positioning mechanism includes a fixed frame 9, a shelf 10, a drive cylinder 11, and a pressure block 12. The fixed frame 9 is symmetrically fixedly connected to one side of the movable plate 7. The shelf 10 is fixedly connected to the bottom end of the fixed frame 9. The drive cylinder 11 is fixedly installed at the top end of the fixed frame 9. The pressure block 12 is fixedly connected to the output end of the drive cylinder 11. The two sides of the plastic strip are placed on the two shelf 10 respectively. The output end of the drive cylinder 11 can drive the pressure block 12 to move downward. The pressure block 12 cooperates with the shelf 10 to clamp the plastic strip, thereby fixing the plastic strip on the movable plate 7. The movable plate 7 drives the plastic strip to move towards the positioning frame 4, so that multiple plastic lunch boxes are embedded inside the positioning frame 4. The output end of the drive cylinder 11 can drive the pressure block 12 to move upward to release the plastic strip. The movable plate 7 can move back to reset.
[0022] A movable beam 13 is fixedly connected to one side of the movable plate 7. A moving mechanism matching the movable beam 13 is provided on the top of the workbench 1. The moving mechanism includes a lead screw 14, a rotary motor 15, and a guide rod 21. The guide rod 21 is fixedly connected to one side of the top of the workbench 1, and is slidably connected to one side of the movable beam 13. The lead screw 14 is rotatably connected to the other side of the top of the workbench 1. One end of the lead screw 14 passes through the other side of the movable beam 13 and is threadedly connected to it. A rotary motor 15 is fixedly installed on the other side of the top of the workbench 1. 5. The output end of the rotary motor 15 is fixedly connected to one end of the lead screw 14. The guide rod 21 can limit the movement trajectory of the movable beam 13. The lead screw 14 and the movable beam 13 are threaded together. The rotary motor 15 drives the lead screw 14 to rotate in both directions, which can drive the movable beam 13 to move linearly back and forth. The movable beam 13 is connected to the movable plate 7 as a whole. The movable beam 13 can drive the movable plate 7 to move linearly back and forth. The movable plate 7 drives the plastic belt to move towards the positioning frame 4, removes the cut waste material, and moves back to reset after conveying the plastic lunch box.
[0023] The lifting mechanism includes a top frame 16, a lifting cylinder 17, and a lifting plate 18. The top frame 16 is fixedly connected to the top of the worktable 1, and the lifting cylinder 17 is fixedly installed on the top of the top frame 16. The output end of the lifting cylinder 17 is fixedly connected to the lifting plate 18. The bottom of the lifting plate 18 is fixedly connected to the top of the cutting table 5. The cutting table 5 is connected to the output end of the lifting cylinder 17 through the lifting plate 18. The output end of the lifting cylinder 17 can drive the cutting table 5 to move up and down reciprocally. The cutting table 5 drives the cutter holder 6 to move downward into the positioning frame 4 to cut the plastic lunch box. Then, the lifting cylinder 17 drives the cutting table 5 to move upward and reset through the lifting plate 18. The movable plate 7 moves the empty slot 8 to the bottom of the positioning frame 4, and the plastic lunch box falls down along the empty slot 8 onto the top of the base 2.
[0024] A set of telescopic rods 20 are symmetrically arranged between the base 2 and the lifting plate 18. The telescopic rods 20 include an inner rod and an outer rod. The top end of the inner rod is fixedly connected to the bottom of the lifting plate 18, and the bottom end of the outer rod is fixedly connected to the top of the base 2. A set of damping shock absorbers 19 are symmetrically arranged between the base 2 and the lifting plate 18. The telescopic rods 20 can limit the movement trajectory of the cutting table 5 and prevent the cutting blade holder 6 from deviating when moving up and down. The damping shock absorbers 19 use their internal damping medium and spring to reduce the pressure generated when the cutting table 5 moves downward, thus playing a buffering role and preventing the plastic lunch box from bending due to excessive pressure, which would affect its use.
[0025] The bottom of the movable plate 7 is fixedly connected to a pusher plate 22. The bottom of the pusher plate 22 is attached to the top of the base 2. A slot is provided on one side of the workbench 1. The pusher plate 22 and the slot are parallel to each other. The pusher plate 22 and the movable plate 7 are connected as one unit. The movable plate 7 can drive the pusher plate 22 to move back and forth in a straight line. When it falls on the top of the base 2, the pusher plate 22 sweeps the cut plastic lunch box out of the top of the base 2 and outwards.
[0026] The positioning and cutting device for producing lunch boxes places the two sides of the plastic strip on two placement plates 10 respectively. The output end of the drive cylinder 11 can drive the pressure block 12 to move downward. The pressure block 12 cooperates with the placement plate 10 to clamp the plastic strip and fix it on the movable plate 7. The movable plate 7 drives the plastic strip to move towards the positioning frame 4, so that multiple plastic lunch boxes are embedded inside the positioning frame 4. The output end of the drive cylinder 11 can drive the pressure block 12 to move upward to release the plastic strip. The movable plate 7 can move back to reset.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A positioning and cutting device for meal box production, comprising a workbench (1), a base (2), a supporting block (3) and a positioning frame (4), characterized in that: The top of the workbench (1) is fixedly connected to a base (2), and the two sides of the base (2) are symmetrically fixedly connected to support blocks (3). The top of the support blocks (3) is fixedly connected to a positioning frame (4). The top of the workbench (1) is provided with a lifting mechanism. The bottom of the lifting mechanism is fixedly connected to a cutting table (5). The bottom of the cutting table (5) is provided with a cutting knife holder (6). The side of the workbench (1) is provided with a movable plate (7). The movable plate (7) is provided with a positioning mechanism. The interior of the movable plate (7) is provided with a hollow groove (8). The positioning mechanism includes a fixed frame (9), a shelf (10), a drive cylinder (11), and a pressure block (12). The fixed frame (9) is symmetrically fixedly connected to one side of the movable plate (7). The shelf (10) is fixedly connected to the bottom end of the fixed frame (9). The drive cylinder (11) is fixedly installed at the top end of the fixed frame (9). The pressure block (12) is fixedly connected to the output end of the drive cylinder (11).
2. The positioning and cutting device for producing meal boxes according to claim 1, characterized in that: A movable beam (13) is fixedly connected to one side of the movable plate (7), and a moving mechanism matching the movable beam (13) is provided on the top of the workbench (1).
3. The positioning and cutting device for producing a meal box according to claim 2, characterized in that: The moving mechanism includes a lead screw (14), a rotary motor (15), and a guide rod (21). The guide rod (21) is fixedly connected to one side of the top of the worktable (1). The guide rod (21) is slidably connected to one side of the movable beam (13). The lead screw (14) is rotatably connected to the other side of the top of the worktable (1). One end of the lead screw (14) passes through the other side of the movable beam (13) and is threadedly connected to it. The rotary motor (15) is fixedly installed on the other side of the top of the worktable (1). The output end of the rotary motor (15) is fixedly connected to one end of the lead screw (14).
4. The positioning and cutting device for meal box production according to claim 1, characterized in that: The lifting mechanism includes a top frame (16), a lifting cylinder (17) and a lifting plate (18). The top frame (16) is fixedly connected to the top of the workbench (1). The lifting cylinder (17) is fixedly installed on the top of the top frame (16). The output end of the lifting cylinder (17) is fixedly connected to the lifting plate (18). The bottom of the lifting plate (18) is fixedly connected to the top of the cutting table (5).
5. The positioning and cutting device for producing a meal box according to claim 4, characterized in that: A set of telescopic rods (20) are symmetrically arranged between the base (2) and the lifting plate (18). The telescopic rods (20) include an inner rod and an outer rod. The top end of the inner rod is fixedly connected to the bottom of the lifting plate (18), and the bottom end of the outer rod is fixedly connected to the top of the base (2). A set of damping shock absorbers (19) are symmetrically arranged between the base (2) and the lifting plate (18).
6. The positioning and cutting device for lunch box production according to claim 1, characterized in that: The bottom of the movable plate (7) is fixedly connected to a pusher plate (22), the bottom of the pusher plate (22) is attached to the top of the base (2), and a slot is provided on one side of the workbench (1). The positions of the pusher plate (22) and the slot are parallel to each other.