Edge cutting device for disposable plastic meal box production

By using clamping plates and U-shaped frame limiting structures, combined with vacuum adsorption technology, the problem of food box misalignment in traditional devices has been solved, realizing automated stacking and retrieval of food boxes and improving production efficiency.

CN224183519UActive Publication Date: 2026-05-01TIANJIN HUANYU ZHONGTENG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN HUANYU ZHONGTENG TECH CO LTD
Filing Date
2025-04-30
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

In traditional disposable plastic lunch box production equipment, during the edge cutting process, the lunch boxes are prone to shifting due to wind pressure, making them unable to be stacked, requiring manual intervention and affecting production efficiency.

Method used

It adopts a clamping plate and U-shaped frame limiting structure, combined with vacuum adsorption technology, uses a cylinder to drive the cutting blade to cut the edge, and uses a servo motor to rotate the disk to realize the automatic stacking and retrieval of the lunch boxes.

Benefits of technology

It enables automated stacking and retrieval of lunch boxes, reducing manual intervention and improving production efficiency and stacking stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of lunch box production, and discloses an edge cutting device for disposable plastic lunch box production, which comprises a machine body, the machine body comprises a base, a first support rod is welded above the base, a rectangular plate is welded above the first support rod, a second support rod is welded above the rectangular plate, and the second support rod is welded above the rectangular plate. A top plate is welded to the upper portion of the second supporting rod. According to the edge cutting device for disposable plastic meal box production, a T-shaped column drives a suction cup to push a meal box to enter the inner side of a U-shaped frame, the meal box extrudes a clamping plate, a telescopic spring deforms to push the clamping plate to clamp and fix the meal box, and compared with a traditional edge cutting device for disposable plastic meal box production, the edge cutting device has the advantages that the efficiency is high; according to the edge cutting device for disposable plastic lunch box production, lunch boxes are limited and fixed through the clamping plates and the U-shaped frame, so that the lunch boxes are conveniently stacked, after the lunch boxes are stacked, the disc rotates to move the lunch boxes to the right side of the base, workers can conveniently take out the lunch boxes, and the edge cutting device is convenient to use.
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Description

A cutting device for producing disposable plastic lunch boxes Technical Field

[0001] This utility model relates to the field of lunch box production technology, and more specifically, to a cutting device for producing disposable plastic lunch boxes. Background Technology

[0002] A lunchbox is a container specifically designed for holding food. It is mainly used for carrying, storing, or heating food and is commonly seen in daily life, takeout services, picnics, and bento boxes. The production process of disposable plastic lunchboxes usually includes raw material processing, molding, edge cutting, quality inspection, and packaging.

[0003] Traditional disposable plastic lunchbox production equipment has the following shortcomings: In its operation, the plastic sheet is first fed into a heating zone to soften it to a malleable state. The softened sheet then adheres to the mold surface, and a lunchbox shape is formed under vacuum. Afterward, a custom die is used to press away excess material, completing the production of the disposable plastic lunchbox. However, during the trimming process, to facilitate the separation of the trimmed lunchbox from the plastic sheet, a through-hole is typically made at the bottom of the mold so that the lunchbox can fall through the hole to the next storage platform. But because the plastic lunchbox is lightweight, its trajectory may be deflected by the downward air pressure during natural fall, making it impossible to stack the lunchboxes and requiring manual intervention. Therefore, improvements are needed. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a cutting device for the production of disposable plastic lunch boxes, which has the advantage of being easy to store.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cutting device for producing disposable plastic lunch boxes, comprising a body, the body including a base, a support rod one welded above the base, a movable plate welded above the support rod one, a support rod two welded above the movable plate, a top plate welded above the support rod two, a cylinder bolted to the top of the top plate, a material groove evenly formed on the surface of the movable plate, a rectangular groove formed above the base, a storage mechanism provided above the rectangular groove, the storage mechanism including a rectangular plate slidably connected to the surface of the rectangular groove, a U-shaped frame evenly welded above the rectangular plate and located below the material groove, movable grooves formed on the inner sides of both ends of the U-shaped frame, a clamping plate slidably installed inside the movable groove, the upper and lower ends of the clamping plate being arc-shaped, a telescopic spring elastically installed between the inner side of the clamping plate and the inner side of the movable groove, and a square plate welded between the inner sides of the bottom end of the U-shaped frame.

[0006] As a preferred technical solution of this utility model, a cutting mechanism is provided below the top plate, the output end of the cylinder extends through the top plate to the bottom of the top plate, the cutting mechanism includes a platform fixedly connected to the bottom of the cylinder output end, a cutting blade located above the material trough is evenly bolted to the bottom of the platform, a cylinder is welded to the bottom of the platform, a T-shaped column is slidably installed inside the cylinder, and the bottom end of the T-shaped column extends through the cylinder to the bottom of the cylinder.

[0007] As a preferred embodiment of this utility model, a servo motor is installed inside the base by internal bolts, a disc is fixedly installed above the servo motor, and a circular block located inside a rectangular groove is welded above the disc, the circular block being slidably connected inside the rectangular plate.

[0008] As a preferred embodiment of this utility model, the rectangular groove has limiting grooves on both sides, and the two ends of the rectangular plate are rotatably mounted with rollers that are rolled inside the limiting grooves.

[0009] As a preferred embodiment of this utility model, a vacuum pump is bolted to the left end of the platform, and an air pipe extending into the body of the platform is fixedly installed at the right end of the vacuum pump. A flexible hose is evenly threaded below the air pipe, and the bottom end of the flexible hose passes through the T-shaped column and extends to the bottom of the T-shaped column. A suction cup is threaded at the bottom end of the flexible hose.

[0010] As a preferred embodiment of this utility model, a return spring is elastically installed between the inner side of the cylinder and the inner side of the bottom end of the T-shaped column, and the return spring is movably sleeved on the outer side of the hose.

[0011] As a preferred technical solution of this utility model, sliding grooves are provided on both sides of the movable groove, and sliders that are slidably connected inside the sliding grooves are welded to both sides of the clamping plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses a T-shaped column to drive a suction cup to push the lunchbox into the inner side of a U-shaped frame, causing the lunchbox to press against the clamping plate. This causes the telescopic spring to deform and push the clamping plate to clamp and fix the lunchbox. Compared with the traditional edge-cutting device used in the production of disposable plastic lunchboxes, this edge-cutting device limits and fixes the lunchbox through the clamping plate and U-shaped frame, which facilitates the stacking of lunchboxes. After the lunchboxes are stacked, the disc rotates and moves the lunchbox to the right side of the base, making it easy for workers to take them out and use them.

[0014] 2. This utility model uses a vacuum pump to use a suction cup to adsorb the lunch box. After the lunch box is pushed to the inside of the U-shaped frame, the suction cup detaches from the inside of the lunch box. Compared with the traditional edge-cutting device used in the production of disposable plastic lunch boxes, this edge-cutting device uses a suction cup to adsorb and push the lunch box, thereby reducing the amount of displacement of the lunch box during the pushing process and preventing the lunch box from shifting during the pushing process and affecting the stacking effect. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the structure of this utility model;

[0016] Figure 2 is a schematic diagram of the cutting mechanism of this utility model;

[0017] Figure 3 is a partial vertical cross-sectional view of the platform body of this utility model;

[0018] Figure 4 is a schematic diagram of the storage mechanism of this utility model;

[0019] Figure 5 is a schematic cross-sectional view of the U-shaped frame of this utility model;

[0020] Figure 6 is a schematic diagram of the disc of this utility model;

[0021] Figure 7 is a schematic diagram of the U-shaped frame of this utility model.

[0022] In the diagram: 1. Machine body; 11. Base; 12. Support rod one; 13. Moving plate; 14. Support rod two; 15. Top plate; 16. Cylinder; 17. Material trough; 18. Rectangular trough; 19. Limiting trough; 2. Edge cutting mechanism; 21. Platform; 22. Vacuum pump; 23. Cutting blade; 24. Air pipe; 25. Hose; 26. Suction cup; 27. Cylinder; 28. T-shaped column; 29. ​​Return spring; 3. Storage mechanism; 301. U-shaped frame; 302. Movable trough; 303. Clamping plate; 304. Slide groove; 305. Slider; 306. Telescopic spring; 307. Square plate; 308. Disc; 309. Servo motor; 310. Round block; 311. Rectangular plate; 312. Roller. Detailed Implementation

[0023] 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.

[0024] As shown in Figures 1 to 7, this utility model provides a cutting device for producing disposable plastic lunch boxes, including a body 1. The body 1 includes a base 11, a support rod 12 welded above the base 11, a movable plate 13 welded above the support rod 12, a support rod 14 welded above the movable plate 13, a top plate 15 welded above the support rod 14, a cylinder 16 bolted to the top of the top plate 15, material grooves 17 evenly formed on the surface of the movable plate 13, a rectangular groove 18 formed above the base 11, and a [missing information - likely a device or structure] above the rectangular groove 18. There is a storage mechanism 3, which includes a rectangular plate 311 slidably connected to the surface of the rectangular groove 18. A U-shaped frame 301 located below the material trough 17 is uniformly welded above the rectangular plate 311. Movable grooves 302 are opened on the inner sides of both ends of the U-shaped frame 301. A clamping plate 303 is slidably installed inside the movable groove 302. The upper and lower ends of the clamping plate 303 are both arc-shaped. A telescopic spring 306 is elastically installed between the inner side of the clamping plate 303 and the inner side of the movable groove 302. A square plate 307 is welded between the inner sides of the bottom end of the U-shaped frame 301.

[0025] When the plastic sheet moves above the moving plate 13, the plastic sheet lunchbox protrudes into the material trough 17. Then, the cylinder 16 is activated, causing the platform 21 to move downwards. First, the suction cup 26 contacts the bottom of the lunchbox. The vacuum pump 22, air pipe 24, and hose 25 generate an adsorption force to fix the suction cup 26 inside the lunchbox. At this time, the platform 21 continues to move downwards, causing the T-shaped column 28 to retract into the cylinder 27, thereby squeezing the return spring 29 and causing it to deform. At this time, the cutting blade 23 moves downwards to cut the plastic sheet. After cutting, the return spring 29 releases its elastic potential energy, pushing the T-shaped column 28 downwards, causing the T-shaped column 28 to drive the suction cup 26 to push the lunchbox. The lunchbox enters the inner side of the U-shaped frame 301, causing the lunchbox to press against the clamping plate 303. This causes the clamping plate 303 to retract into the movable groove 302, pressing against the telescopic spring 306. The telescopic spring 306 deforms and pushes the clamping plate 303 to clamp and fix the lunchbox. At this time, the vacuum pump 22 causes the suction cup 26 to detach from the inner side of the lunchbox, thus enabling the next edge cutting operation. When the lunchbox is pushed above the square plate 307, the servo motor 309 is activated, causing the servo motor 309 to drive the disc 308 to rotate. The disc 308 drives the circular block 310 to perform a circular motion, thereby causing the rectangular plate 311 to move the U-shaped frame 301 to the right under the limit of the roller 312, making it easier for the staff to remove the lunchbox.

[0026] The T-shaped column 28 drives the suction cup 26 to push the lunch box into the inside of the U-shaped frame 301, so that the lunch box squeezes the clamping plate 303, causing the telescopic spring 306 to deform and push the clamping plate 303 to clamp and fix the lunch box. Compared with the traditional edge-cutting device for disposable plastic lunch box production, this edge-cutting device for disposable plastic lunch box production limits and fixes the lunch box through the clamping plate 303 and the U-shaped frame 301, which facilitates the stacking of lunch boxes. After the lunch boxes are stacked, the disc 308 rotates to move the lunch box to the right side of the base 11, making it easy for the staff to take it out and use.

[0027] The top plate 15 is provided with a cutting mechanism 2. The output end of the cylinder 16 extends through the top plate 15 to the bottom of the top plate 15. The cutting mechanism 2 includes a platform 21 fixedly connected to the bottom of the output end of the cylinder 16. The bottom of the platform 21 is evenly bolted with a cutting blade 23 located above the material trough 17. A cylinder 27 is welded to the bottom of the platform 21. A T-shaped column 28 is slidably installed inside the cylinder 27. The bottom end of the T-shaped column 28 extends through the cylinder 27 to the bottom of the cylinder 27.

[0028] The vacuum pump 22 causes the suction cup 26 to adsorb the lunch box. After the lunch box is pushed to the inside of the U-shaped frame 301, the suction cup 26 detaches from the inside of the lunch box. Compared with the traditional edge-cutting device for disposable plastic lunch box production, this edge-cutting device for disposable plastic lunch box production uses the suction cup 26 to adsorb and push the lunch box, thereby reducing the amount of displacement of the lunch box during the pushing process and preventing the lunch box from shifting during the pushing process and affecting the stacking effect.

[0029] The base 11 has a servo motor 309 installed inside by bolts. A disc 308 is fixedly installed above the servo motor 309. A circular block 310 located inside the rectangular groove 18 is welded above the disc 308. The circular block 310 is slidably connected inside the rectangular plate 311.

[0030] Start the servo motor 309, which drives the disc 308 to rotate. The disc 308 drives the circular block 310 to make a circular motion, which in turn drives the rectangular plate 311 to move the U-shaped frame 301 to the right so that the staff can take out the lunch box.

[0031] Among them, the rectangular groove 18 has limit grooves 19 on both sides, and the two ends of the rectangular plate 311 are rotatably mounted with rollers 312 that are rolled inside the limit grooves 19.

[0032] The rectangular plate 311 moves left and right inside the rectangular groove 18, causing the roller 312 to roll inside the limiting groove 19, thereby limiting the rectangular groove 18.

[0033] The platform 21 is bolted to the left end and a vacuum pump 22 is bolted to the right end. An air pipe 24 extending into the platform 21 is fixedly installed at the right end of the vacuum pump 22. A hose 25 is threaded evenly below the air pipe 24. The bottom end of the hose 25 passes through the T-shaped column 28 and extends to the bottom of the T-shaped column 28. A suction cup 26 is threaded at the bottom end of the hose 25.

[0034] Start the vacuum pump 22 to allow the suction cup 26 to adhere to and release the bottom of the lunch box, making it easier to push the lunch box to the inside of the U-shaped frame 301.

[0035] A return spring 29 is elastically installed between the inner side of the cylinder 27 and the inner side of the bottom end of the T-shaped column 28, and the return spring 29 is movably sleeved on the outer side of the hose 25.

[0036] After the T-shaped column 28 retracts into the interior of the cylinder 27, it compresses the return spring 29, causing the return spring 29 to release its elastic potential energy and push the T-shaped column 28 downward, thereby pushing the lunch box to the inside of the U-shaped frame 301.

[0037] The movable groove 302 has sliding grooves 304 on both sides, and the clamping plate 303 has sliders 305 that are slidably connected inside the sliding grooves 304 welded to both sides.

[0038] The movement of the clamping plate 303 inside the movable groove 302 causes the slider 305 to move inside the sliding groove 304, thereby limiting the clamping plate 303.

[0039] Working principle and usage process of this utility model:

[0040] When the plastic sheet moves above the moving plate 13, the plastic sheet lunchbox protrudes into the material trough 17. Then, the cylinder 16 is activated, causing the platform 21 to move downwards. First, the suction cup 26 contacts the bottom of the lunchbox. The vacuum pump 22, air pipe 24, and hose 25 generate an adsorption force to fix the suction cup 26 inside the lunchbox. At this time, the platform 21 continues to move downwards, causing the T-shaped column 28 to retract into the cylinder 27, thereby squeezing the return spring 29 and causing it to deform. At this time, the cutting blade 23 moves downwards to cut the plastic sheet. After cutting, the return spring 29 releases its elastic potential energy, pushing the T-shaped column 28 downwards, causing the T-shaped column 28 to drive the suction cup 26 to push the lunchbox. The lunchbox enters the inner side of the U-shaped frame 301, causing the lunchbox to press against the clamping plate 303. This causes the clamping plate 303 to retract into the movable groove 302, pressing against the telescopic spring 306. The telescopic spring 306 deforms and pushes the clamping plate 303 to clamp and fix the lunchbox. At this time, the vacuum pump 22 causes the suction cup 26 to detach from the inner side of the lunchbox, thus enabling the next edge cutting operation. When the lunchbox is pushed above the square plate 307, the servo motor 309 is activated, causing the servo motor 309 to drive the disc 308 to rotate. The disc 308 drives the circular block 310 to perform a circular motion, thereby causing the rectangular plate 311 to move the U-shaped frame 301 to the right under the limit of the roller 312, making it easier for the staff to remove the lunchbox.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for producing disposable plastic lunch boxes, comprising an organic body (1), characterized in that: The machine body (1) includes a base (11), a support rod (12) is welded above the base (11), a movable plate (13) is welded above the support rod (12), a support rod (14) is welded above the movable plate (13), a top plate (15) is welded above the support rod (14), a cylinder (16) is bolted to the top plate (15), a material groove (17) is evenly opened on the surface of the movable plate (13), a rectangular groove (18) is opened above the base (11), a storage mechanism (3) is provided above the rectangular groove (18), and the storage mechanism (3) The device includes a rectangular plate (311) that is slidably connected to the surface of a rectangular groove (18). A U-shaped frame (301) located below a material trough (17) is uniformly welded above the rectangular plate (311). Movable grooves (302) are provided on the inner sides of both ends of the U-shaped frame (301). A clamping plate (303) is slidably installed inside the movable groove (302). The upper and lower ends of the clamping plate (303) are both arc-shaped. A telescopic spring (306) is elastically installed between the inner side of the clamping plate (303) and the inner side of the movable groove (302). A square plate (307) is welded between the inner sides of the bottom end of the U-shaped frame (301).

2. The edge-cutting device for producing disposable plastic lunch boxes according to claim 1, characterized in that: A cutting mechanism (2) is provided below the top plate (15). The output end of the cylinder (16) extends through the top plate (15) to the bottom of the top plate (15). The cutting mechanism (2) includes a platform (21) fixedly connected to the bottom of the output end of the cylinder (16). A cutting blade (23) located above the material trough (17) is evenly bolted to the bottom of the platform (21). A cylinder (27) is welded to the bottom of the platform (21). A T-shaped column (28) is slidably installed inside the cylinder (27). The bottom end of the T-shaped column (28) extends through the cylinder (27) to the bottom of the cylinder (27).

3. The edge-cutting device for producing disposable plastic lunch boxes according to claim 1, characterized in that: A servo motor (309) is installed inside the base (11) by bolts. A disc (308) is fixedly installed above the servo motor (309). A circular block (310) located inside the rectangular groove (18) is welded above the disc (308). The circular block (310) is slidably connected to the inside of the rectangular plate (311).

4. The edge-cutting device for producing disposable plastic lunch boxes according to claim 3, characterized in that: Limiting grooves (19) are provided on both sides of the rectangular groove (18), and rollers (312) that are rolled inside the limiting grooves (19) are rotatably installed at both ends of the rectangular plate (311).

5. The trimming device for producing disposable plastic meal boxes according to claim 2, characterized in that: A vacuum pump (22) is bolted to the left end of the platform (21). An air pipe (24) extending into the platform (21) is fixedly installed at the right end of the vacuum pump (22). A hose (25) is threaded evenly below the air pipe (24). The bottom end of the hose (25) extends through the T-shaped column (28) to the bottom of the T-shaped column (28). A suction cup (26) is threaded at the bottom end of the hose (25).

6. The edge-cutting device for producing disposable plastic lunch boxes according to claim 5, characterized in that: A return spring (29) is elastically installed between the inner side of the cylinder (27) and the inner side of the bottom end of the T-shaped column (28), and the return spring (29) is movably sleeved on the outer side of the hose (25).

7. The trimming device for producing disposable plastic meal boxes according to claim 1, characterized in that: The movable groove (302) has sliding grooves (304) on both sides, and the clamping plate (303) has sliders (305) that are slidably connected inside the sliding grooves (304) welded to both sides.