A stacking device for plastic meal boxes

By designing a stacking device for processing plastic lunch boxes, and utilizing a combination of limiting rods and support plates, the problem of lunch boxes scattering and tipping over during transportation was solved, achieving stable stacking and efficient transportation of lunch boxes.

CN224465894UActive Publication Date: 2026-07-07LUOYANG JUNZHENG PLASTIC PRODUCTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LUOYANG JUNZHENG PLASTIC PRODUCTS CO LTD
Filing Date
2025-08-20
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

During the production of plastic lunch boxes, the boxes are prone to scattering or tipping over during transportation, lacking effective fixation and stability, resulting in low transportation efficiency.

Method used

A stacking device for processing plastic lunch boxes was designed, including a trolley, a lifting component, a stabilizing component, a reinforcing component, and a feeding component. By combining a limiting rod with a support plate, the lunch boxes can be stably stacked and easily removed. The hydraulic cylinder and control module improve the ease of height adjustment, and the sliding component reduces friction and wear.

Benefits of technology

It improves the stability and convenience of lunch boxes during transportation, increases the efficiency of lunch box transportation, reduces the occurrence of tipping, and enhances the convenience of processing and transportation.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model belongs to the field of plastic lunch box processing technology, specifically a stacking device for processing plastic lunch boxes, including a trolley; the top of the trolley is provided with a lifting component and a stabilizing component; the top of the trolley is provided with a reinforcing component; a fixing plate is installed on the lifting component; multiple sets of insertion holes are opened on the top of the fixing plate; each set of insertion holes has four holes; a feeding component is provided on the top of the fixing plate; the feeding component includes a limiting rod, a sleeve, a support plate, a retaining ring, and an extension plate; the number of sleeves is the same as the number of insertion holes; the sleeves are inserted into the insertion holes; a limiting rod is fixedly connected to the top of the sleeve; a support plate is installed on the limiting rod; an extension plate is fixedly connected to the side wall of the support plate; through the above structure, by using four limiting rods and one support plate as a feeding component, the lunch boxes can be limited from the surrounding area when stacked, thereby improving the stability of the lunch boxes during transportation and reducing the possibility of the stacked lunch boxes tipping over.
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Description

Technical Field

[0001] This utility model belongs to the field of plastic lunch box processing technology, specifically a stacking device for processing plastic lunch boxes. Background Technology

[0002] Plastic lunch boxes are portable containers made of food-grade plastic and are widely used in the catering industry. They are mainly used for takeout or food preservation and have the characteristics of strong sealing, high temperature resistance, various styles, and low cost.

[0003] In the production and processing of plastic lunch boxes, when transferring semi-finished lunch boxes to the next processing station, it is usually necessary to stack the lunch boxes to increase the transfer volume. Through long-term use and observation, it has been found that the existing lunch boxes are usually simply stacked and then placed on transfer vehicles or other equipment for transportation. However, when the stacked lunch boxes move with the transfer equipment, the lack of fixation can cause the stacked lunch boxes to easily scatter or tip over.

[0004] Therefore, this utility model provides a stacking device for processing plastic lunch boxes. Utility Model Content

[0005] To overcome the shortcomings of the prior art and solve at least one of the problems mentioned in the background art, a stacking device for processing plastic lunch boxes is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A stacking device for processing plastic lunch boxes according to this utility model includes a trolley; the top of the trolley is provided with a lifting component and a stabilizing component; the top of the trolley is provided with a reinforcing component; a fixing plate is installed on the lifting component; multiple sets of insertion holes are opened on the top of the fixing plate; each set of insertion holes has four holes; a feeding component is provided on the top of the fixing plate; the feeding component includes a limiting rod, a sleeve, a support plate, a retaining ring, and an extension plate; the number of sleeves is the same as the number of insertion holes; the sleeves are inserted into the insertion holes; a limiting rod is fixedly connected to the top of the sleeve; a support plate is installed on the limiting rod; an extension plate is fixedly connected to the side wall of the support plate; a pair of retaining rings are fixedly connected to the limiting rod; through the above structure, by using four limiting rods and one support plate as a feeding component, the lunch boxes can be limited from the surrounding area when stacked, so as to improve the stability of the lunch boxes during transportation and movement, and reduce the possibility of the stacked lunch boxes tipping over.

[0007] Preferably, the support plate and the limiting rod are in a sliding fit; the support plate is provided with a sliding component; through the above structure, the support plate and the limiting rod are in a sliding fit, which makes it easier to lift the lunch boxes stacked on the support plate, thereby improving the convenience of taking out the lunch boxes.

[0008] Preferably, the feeding assembly is provided in multiple sets; each set of feeding assemblies has the same size; through the above structure, by setting multiple sets of feeding assemblies of the same size, the number of lunch boxes stacked on each set of feeding assemblies can be consistent, thereby improving the convenience of subsequent processing. At the same time, by stacking multiple sets of feeding assemblies, more lunch boxes can be transported at one time, thereby improving the transfer efficiency of lunch boxes.

[0009] Preferably, the reinforcing component includes a fixing rod; the fixing rod is fixed to the top of the fixing plate; a baffle is fixed to the fixing rod; a fixing ring is slidably fitted on the fixing rod; multiple sets of counterweight plates are fixed to the side wall of the fixing ring; and holes are formed on the counterweight plates. With the above structure, the fixing rod, baffle, fixing ring, and counterweight plates can improve the positional stability of multiple sets of feeding components when stacked by pressing them down from the top of the feeding component and connecting them to the top.

[0010] Preferably, the lifting assembly includes a hydraulic cylinder; the hydraulic cylinder is fixedly connected to the top of the trolley; the fixing plate is fixedly connected to the top of the hydraulic cylinder; an energy storage module is installed at the bottom of the trolley; a control module is installed on one side of the trolley; the hydraulic cylinder, the energy storage module, and the control module are electrically connected; with the above structure, the hydraulic cylinder, the energy storage module, and the control module are provided to facilitate raising the height of the lower material unloading assembly, thereby reducing the need for users to squat or bend over significantly when moving the material unloading assembly.

[0011] Preferably, the sliding assembly includes multiple sets of collars; each set of collars is correspondingly arranged with a limiting rod; the collars are installed inside the support plate; and ball bearings are installed inside the collars; through the above structure, the collars and the ball bearings inside can reduce the frictional force of the support plate sliding on the limiting rod, thereby reducing the wear between the support plate and the limiting rod.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The stacking device for processing plastic lunch boxes described in this utility model consists of four limiting rods and a support plate as a set of feeding components. It can limit the lunch boxes from the surrounding area when stacking them, thereby improving the stability of the lunch boxes during transportation and reducing the possibility of the stacked lunch boxes tipping over.

[0014] 2. The stacking device for processing plastic lunch boxes described in this utility model can achieve the same number of lunch boxes stacked on each set of feeding components of the same size by setting multiple sets of feeding components, thereby improving the convenience of subsequent processing. At the same time, stacking multiple sets of feeding components can realize the transportation of more lunch boxes at one time, thereby improving the transfer efficiency of lunch boxes. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a schematic diagram of the cooperation structure between the counterweight plate and the fixing rod in this utility model;

[0018] Figure 3 This is a schematic diagram of the cooperation structure between the limiting rod and the support plate in this utility model;

[0019] Figure 4 This is a schematic diagram of the cooperation structure between the limiting rod and the collar in this utility model;

[0020] Figure 5 This is a schematic diagram of the cooperation structure between the trolley and the oil cylinder in this utility model.

[0021] Legend:

[0022] 1. Trolley; 11. Fixing plate; 12. Insertion hole; 13. Limiting rod; 14. Sleeve; 15. Support plate; 16. Retaining ring; 17. Extension plate; 4. Fixing rod; 41. Baffle plate; 42. Fixing ring; 43. Counterweight plate; 5. Hydraulic cylinder; 51. Energy storage module; 52. Control module; 6. Collar; 7. Positioning rod. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 5As shown in the embodiment of this utility model, a stacking device for processing plastic lunch boxes includes a trolley 1; the top of the trolley 1 is provided with a lifting assembly and a stabilizing assembly; the top of the trolley 1 is provided with a reinforcing assembly; a fixing plate 11 is installed on the lifting assembly; the top of the fixing plate 11 has multiple sets of insertion holes 12; each set of insertion holes 12 has four holes; the top of the fixing plate 11 is provided with a feeding assembly; the feeding assembly includes a limiting rod 13, a sleeve 14, a support plate 15, a retaining ring 16, and an extension plate 17; the number of sleeves 14 is the same as the number of insertion holes 12; the sleeves 14 are inserted into the insertion holes 12; the top of the sleeves 14 is fixedly connected to the limiting rod 13; the supporting plate 15 is installed on the limiting rod 13; the side wall of the support plate 15 is fixedly connected to the extension plate 17; the limiting rod 13 is fixedly connected to the supporting rod 13; the supporting rod 13 is provided with a stabilizing assembly and a reinforcing assembly; a fixing plate 11 is installed on the lifting assembly; multiple sets of insertion holes 12 are opened on the top of the fixing plate 11; each set of insertion holes 12 has four insertion holes 12; a feeding assembly is provided on the top of the fixing plate 11; the feeding assembly includes a limiting rod 13, a sleeve 14, a support plate 15, a retaining ring 16, and an extension plate 17; the number of sleeves 14 is the same as the number of insertion holes 12; the sleeves 14 are inserted into the insertion holes 12; the top of the sleeves 14 is fixedly connected to the limiting rod 13; the top of the limiting rod 14 is fixedly connected to the limiting rod 13; the supporting rod 13 is fixedly connected to the supporting rod 15; the A pair of retaining rings 16 are fixedly connected to the rod 13. During operation, when stacking plastic lunch boxes, the sleeve 14 is first inserted into the insertion hole 12. At this time, the four limiting rods 13 and a support plate 15 are connected to form a group. Then, the lunch box is put into the top gap of the group of limiting rods 13, so that the lunch box contacts the bottom support plate 15 and is stacked upwards. When the lunch box is stacked to the position of the top retaining ring 16 of the trolley 1, the stacking can be stopped. After the lunch boxes are stacked in each group of limiting rods 13, the trolley 1 is pushed to transfer the lunch boxes. Through the above structure, the four limiting rods 13 and a support plate 15 form a group of feeding components, which can limit the lunch boxes from the surrounding area when stacking them, so as to improve the stability of the lunch boxes during transfer and reduce the possibility of the stacked lunch boxes tipping over.

[0026] like Figure 4 As shown, the support plate 15 and the limiting rod 13 are in a sliding fit; the support plate 15 is provided with a sliding component; during operation, after the lunch box is transferred to the designated position, a set of feeding components can be taken out from the insertion hole 12, and then the support plate 15 can be moved upward by pulling the extension plate 17, so that the lunch box stacked on the support plate 15 can be lifted out of the internal space enclosed by the limiting rod 13. After the lunch box is removed, the support plate 15 is lowered to the position of the bottom retaining ring 16. Through the above structure, the support plate 15 and the limiting rod 13 are in a sliding fit, which makes it easy to lift the lunch box stacked on the support plate 15, thereby improving the convenience when taking out the lunch box.

[0027] like Figure 1As shown, the feeding assembly is provided in multiple sets; each set of feeding assemblies has the same size; during operation, after the lunch box is placed on the support plate 15 to the height of the top retaining ring 16, the number of lunch boxes stacked in each set of feeding assemblies is the same. Then, the sleeve 14 can be aligned with the top of the limiting rod 13. After the sleeve 14 is inserted into the top of the limiting rod 13, it will be supported by the retaining ring 16 on the limiting rod 13. At this time, the stacking of two sets of feeding assemblies can be completed. Through the above structure, by setting multiple sets of feeding assemblies of the same size, the number of lunch boxes stacked on each set of feeding assemblies can be consistent, thereby improving the convenience of subsequent processing. At the same time, by stacking multiple sets of feeding assemblies, more lunch boxes can be transported at one time, thereby improving the transfer efficiency of lunch boxes.

[0028] like Figure 1 and Figure 3 As shown, the reinforcing assembly includes a fixing rod 4; the fixing rod 4 is fixed to the top of the fixing plate 11; a baffle 41 is fixed to the fixing rod 4; a fixing ring 42 is slidably fitted onto the fixing rod 4; multiple sets of counterweight plates 43 are fixed to the side wall of the fixing ring 42; holes are provided on the counterweight plates 43; during operation, when multiple sets of feeding assemblies are stacked, the top layer of feeding assemblies is made to be horizontal, and then the counterweight plates 43 are aligned with the top of the limiting rod 13, and the counterweight plates 43 are then aligned with the top of the limiting rod 13. When the counterweight 43 is inserted into the limiting rod 13, the fixing ring 42 will be inserted into the fixing rod 4 and supported by the baffle 41. When it is necessary to remove the feeding assembly, the fixing ring 42 and the counterweight 43 can be removed first, and then the feeding assemblies can be removed one by one. With the above structure, the fixing rod 4, the baffle 41, the fixing ring 42 and the counterweight 43 can be set up. By pressing down on the top of the feeding assembly and connecting the top of the multiple feeding assemblies, the stability of the position when multiple feeding assemblies are stacked can be improved.

[0029] like Figure 1 and Figure 5 As shown, the lifting assembly includes a hydraulic cylinder 5; the hydraulic cylinder 5 is fixedly connected to the top of the trolley 1; the fixing plate 11 is fixedly connected to the top of the hydraulic cylinder 5; an energy storage module 51 is installed at the bottom of the trolley 1; a control module 52 is installed on one side of the trolley 1; the hydraulic cylinder 5, the energy storage module 51, and the control module 52 are electrically connected; during operation, when the material feeding assembly is removed, if the height of the lower material feeding assembly is low, the hydraulic cylinder 5 can be stretched by the control module 52 to raise the fixing plate 11, thus raising the bottom material feeding assembly. After the material feeding assembly is completely removed, the hydraulic cylinder 5 can be contracted by the control module 52 to lower the fixing plate 11. Through the above structure, with the hydraulic cylinder 5, the energy storage module 51, and the control module 52, the height of the lower material feeding assembly can be easily raised, reducing the need for users to squat or bend over significantly to move the material feeding assembly.

[0030] like Figure 4As shown, the sliding assembly includes multiple sets of collars 6; each set of collars 6 is correspondingly arranged with a limiting rod 13; the collars 6 are installed inside the support plate 15; and ball bearings are installed inside the collars 6. During operation, when the support plate 15 slides on the limiting rod 13, the support plate 15 will drive the collars 6 to move up and down. At this time, the ball bearings inside the collars 6 contact the surface of the limiting rod 13, which can convert the sliding friction between the support plate 15 and the limiting rod 13 into rolling friction. Through the above structure, the collars 6 are set to cooperate with the ball bearings inside, which can reduce the frictional force of the support plate 15 sliding on the limiting rod 13, thereby reducing the wear between the support plate 15 and the limiting rod 13.

[0031] like Figure 1 As shown, the stabilizing component includes four sets of positioning rods 7; the positioning rods 7 are fixed to the top of the trolley 1; the fixing plate 11 is slidably connected to the positioning rods 7; during operation, when the fixing plate 11 is rising or falling, the fixing plate 11 will slide on the four sets of positioning rods 7. Through the above structure, the four sets of positioning rods 7 are respectively located at the four corners of the fixing plate 11, which can improve the stability of the fixing plate 11 during lifting and lowering.

[0032] Working principle: When stacking plastic lunch boxes, first insert the sleeve 14 into the insertion hole 12. At this time, the four limiting rods 13 are connected to a support plate 15 to form a group. Then, the lunch box is inserted through the top gap of the group of limiting rods 13, so that the lunch box contacts the bottom support plate 15 and is stacked upwards. When the lunch boxes are stacked to the position of the top retaining ring 16 of the trolley 1, the stacking can be stopped. After the lunch boxes are stacked in each group of limiting rods 13, the trolley 1 is pushed to transfer the lunch boxes. When the lunch boxes are transferred to the designated position, a set of feeding components can be inserted from the insertion hole 12. Remove the food containers from the inside, and then move the support plate 15 upward by pulling the extension plate 17. This will lift the food containers stacked on the support plate 15 out of the internal space enclosed by the limiting rod 13. After removing the food containers, lower the support plate 15 to the position of the bottom retaining ring 16. When the food containers are placed on the support plate 15 to the height of the top retaining ring 16, the number of food containers stacked in each feeding assembly is the same. Then, align the sleeve 14 with the top of the limiting rod 13. When the sleeve 14 is inserted into the top of the limiting rod 13, it will be supported by the retaining ring 16 on the limiting rod 13. The system can stack two sets of feeding components at a time. When stacking multiple sets of feeding components, the top layer of feeding components should be horizontal. Then, the counterweight 43 should be aligned with the top of the limiting rod 13, and the counterweight 43 should be inserted into the limiting rod 13. At this time, the fixing ring 42 will be inserted into the fixing rod 4 and supported by the baffle 41. When it is necessary to remove the feeding components, the fixing ring 42 and the counterweight 43 can be removed first, and then the feeding components can be removed one by one. When removing the feeding components, if the feeding component at the bottom is lower in height, it can be controlled by the control module 52. The hydraulic cylinder 5 is stretched, thereby raising the fixed plate 11. At this time, the bottom feeding assembly can be raised. After the feeding assembly is completely removed, the hydraulic cylinder 5 is controlled by the control module 52 to retract and lower the fixed plate 11. When the support plate 15 slides on the limit rod 13, the support plate 15 will drive the collar 6 to move up and down. At this time, the ball bearings in the collar 6 contact the surface of the limit rod 13, which can convert the sliding friction between the support plate 15 and the limit rod 13 into rolling friction. When the fixed plate 11 is rising or falling, the fixed plate 11 will slide on the four sets of positioning rods 7.

[0033] 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 stacking device for processing plastic lunch boxes, comprising a trolley (1); characterized in that: The trolley (1) is equipped with a lifting assembly and a stabilizing assembly on its top; the trolley (1) is equipped with a reinforcing assembly on its top; a fixing plate (11) is installed on the lifting assembly; the fixing plate (11) has multiple sets of insertion holes (12) on its top; each set of insertion holes (12) has four holes; the fixing plate (11) is equipped with a feeding assembly on its top; the feeding assembly includes a limiting rod (13), a sleeve (14), a support plate (15), a retaining ring (16), and an extension plate (17); the number of sleeves (14) is the same as the number of insertion holes (12); the sleeves (14) are inserted into the insertion holes (12); the limiting rod (13) is fixedly connected to the top of the sleeves (14); a support plate (15) is installed on the limiting rod (13); an extension plate (17) is fixedly connected to the side wall of the support plate (15); a pair of retaining rings (16) are fixedly connected to the limiting rod (13).

2. The stacking device for processing plastic lunch boxes according to claim 1, characterized in that: The support plate (15) and the limiting rod (13) are in sliding fit; the support plate (15) is provided with a sliding component.

3. The stacking device for processing plastic lunch boxes according to claim 1, characterized in that: The feeding assembly is provided in multiple sets; each set of the feeding assembly has the same size.

4. The stacking device for processing plastic lunch boxes according to claim 1, characterized in that: The reinforcement assembly includes a fixing rod (4); the fixing rod (4) is fixed to the top of the fixing plate (11); a baffle (41) is fixed to the fixing rod (4); a fixing ring (42) is slidably fitted on the fixing rod (4); multiple sets of counterweight plates (43) are fixed to the side wall of the fixing ring (42); and holes are opened on the counterweight plates (43).

5. The stacking device for processing plastic lunch boxes according to claim 1, characterized in that: The lifting assembly includes a hydraulic cylinder (5); the hydraulic cylinder (5) is fixed to the top of the trolley (1); the fixing plate (11) is fixed to the top of the hydraulic cylinder (5); an energy storage module (51) is installed at the bottom of the trolley (1); a control module (52) is installed on one side of the trolley (1); the hydraulic cylinder (5), the energy storage module (51) and the control module (52) are electrically connected.

6. The stacking device for processing plastic lunch boxes according to claim 2, characterized in that: The sliding assembly includes multiple sets of collars (6); each set of collars (6) is correspondingly arranged with a limiting rod (13); the collars (6) are installed inside the support plate (15); and ball bearings are installed inside the collars (6).

7. The stacking device for processing plastic lunch boxes according to claim 1, characterized in that: The stabilizing assembly includes four sets of positioning rods (7); the positioning rods (7) are fixed to the top of the trolley (1); the fixing plate (11) is slidably connected to the positioning rods (7).