A starch material environmentally friendly lunch box preparation device
By designing an environmentally friendly lunch box preparation equipment for starch materials, and automatically filling the mold cavity with the rotation of the horizontal barrel and forming the lunch box, the problems of cumbersome operation and limited processing speed of the traditional starch-based lunch box processing method are solved, and an efficient and continuous production model is achieved.
Patent Information
- Application Number
- CN202510028883.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2045-01-08
AI Technical Summary
The traditional starch-based lunch box processing method is cumbersome, has poor coherence, and has limited processing speed, which cannot meet the needs of large-scale production.
A starch material environmentally friendly lunch box preparation equipment is designed, using a horizontal horizontal barrel and a plurality of mold cavity opened on the inner wall of the circumference of the horizontal barrel. The liquid raw material automatically fills the mold cavity and forms a lunch box through the rotation of the horizontal barrel, reducing manual intervention.
It realizes continuous introduction of liquid raw materials and automatically forms lunch boxes, improves production efficiency, reduces raw material waste and manual operation needs, simplifies the operating process, and is suitable for large-scale production of environmentally friendly lunch boxes.
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Figure CN119458724B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of lunch box processing, in particular to a starch material environment-friendly lunch box preparation device. Background Art
[0002] In today's society, with the increasing awareness of environmental protection, people's demand for environmentally friendly tableware is constantly increasing. Traditional plastic tableware is gradually being replaced because it is difficult to degrade and causes serious pollution to the environment.
[0003] As a new type of environmentally friendly tableware, starch-based lunch boxes are gradually favored by the market because of their biodegradable, non-toxic, environmentally friendly and safe characteristics. Starch materials mainly come from natural plants, such as corn, potatoes, cassava, etc. These resources are abundant and easy to obtain worldwide. Through modern biotechnology and processing technology, these natural starch materials can be converted into tableware products with excellent performance, thereby replacing traditional plastic tableware and reducing environmental pollution.
[0004] The processing method of starch-based lunch boxes generally adopts the die extrusion molding method. The die heats and extrude the raw materials to deform the raw materials into the shape of lunch boxes and fix them. When using this method, it is necessary to repeat the work of opening and closing the die for extrusion, and filling and removing materials are required when the die is opened. The operation method is cumbersome and the consistency is poor. At the same time, the die needs to wait for a specified time when closing and extruding, so the processing speed of the lunch boxes is greatly limited. Summary of the invention
[0005] In view of at least one of the above technical problems, the present invention provides a starch material environmentally friendly lunch box preparation device, the specific technical solution adopted by the present invention is:
[0006] According to a first aspect of the present invention, there is provided a device for preparing an environmentally friendly lunch box made of starch material, comprising:
[0007] A molding structure, the molding structure comprising a horizontal cylinder with a horizontal axis and a plurality of mold cavities provided on the inner circumferential wall of the horizontal cylinder, and retaining edges are provided on both end surfaces of the horizontal cylinder;
[0008] Among them, when the liquid raw material is poured into the horizontal cylinder between the two ribs, the raw material fills the mold cavity due to its own fluidity. When the horizontal cylinder rotates around its own axis, the excess raw material in the mold cavity flows out to other mold cavities and forms a thin layer on the inner wall of the mold cavity.
[0009] In some embodiments of the present invention, an air blowing unit for cooling the raw material is provided in the horizontal cylinder, and the air blowing unit includes an air diffusion pipe, an air supply pipe for supplying air into the air diffusion pipe, and a plurality of sleeves arranged on the air diffusion pipe, one end of the sleeve is inserted into the air diffusion pipe and is interconnected, the sleeve can rotate on the air diffusion pipe, the other end of the sleeve is connected to a nozzle, the nozzle is inclined, and a plurality of fan plates are provided in the sleeve.
[0010] In some embodiments of the present invention, a shield for accommodating a plurality of sleeves is provided on the air diffusion pipe, and the shield is located on the inner side of the horizontal cylinder.
[0011] In some embodiments of the present invention, the preparation device further comprises a discharge structure, the discharge structure comprising a fixed cylinder located in the middle of the horizontal cylinder and a rotating cylinder located outside the horizontal cylinder, the fixed cylinder is coaxial with the rotating cylinder, and an opening is opened on the outer wall of the fixed cylinder;
[0012] Support rings are provided at both ends of the rotating cylinder. The rotating cylinder rotates between the two support rings. The two support rings are fixedly connected by a bottom plate. The fixed cylinder is connected to one support ring. A plurality of support shafts are provided in the rotating cylinder. The plurality of support shafts are distributed in a ring shape around the axis of the rotating cylinder. The two ends of the support shafts are respectively fixedly mounted on the two support rings. A plurality of conveying wheels are rotatably provided on the support shafts. The axes of the conveying wheels are relatively inclined to the axis of the rotating cylinder.
[0013] The inner wall of the rotating cylinder is transmission-connected with the conveying wheel.
[0014] In some embodiments of the present invention, a first motor is fixed on the bottom plate, a first transmission wheel is provided at the output end of the first motor, and the first transmission wheel is transmission-connected to the outer wall of the rotating cylinder.
[0015] In some embodiments of the present invention, a material delivery pipe is provided at the bottom of the fixed cylinder, and a plurality of material discharge branch pipes are connected at the bottom of the material delivery pipe.
[0016] In some embodiments of the present invention, a plurality of guide plates are fixed in the opening, and a narrow scraper is fixed to the end of each guide plate facing the inner wall of the horizontal cylinder.
[0017] In some embodiments of the present invention, at least two transmission rings are arranged on the outer wall of the transverse cylinder, each transmission ring is provided with at least two second transmission wheels, and the second transmission wheels are located on the lower side of the transmission ring and are used to provide support for the transmission ring, and a second transmission wheel is provided with a second motor for providing power therefor.
[0018] The beneficial effects of the present invention are:
[0019] The equipment allows the continuous introduction of liquid raw materials, and through the rotating horizontal cylinder and the internal mold cavity, the raw materials can form lunch boxes in a continuous process, thereby improving production efficiency; the entire process does not require human intervention, and the excess raw materials in the mold cavity will automatically flow to other mold cavities as the horizontal cylinder rotates, reducing the need for manual operation and also reducing labor intensity; the structure is simple, easy to operate, highly continuous, and occupies little space; in summary, this new type of starch-based lunch box preparation equipment can effectively improve production efficiency, reduce raw material waste, simplify the operating process, and can realize a continuous production mode, which has significant advantages for large-scale production of environmentally friendly lunch boxes. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 is a schematic structural diagram of an embodiment of the present invention;
[0022] Figure 2 yes Figure 1 Left view structural diagram;
[0023] Figure 3 is a schematic diagram of an exploded structure of an embodiment of the present invention;
[0024] Figure 4 is a schematic structural diagram of a horizontal cross-section of an embodiment of the present invention;
[0025] Figure 5 is a schematic diagram of the structure of a fixed cylinder and a rotating cylinder in an embodiment of the present invention;
[0026] Figure 6 yes Figure 5 Right view structural diagram;
[0027] Figure 7 is a schematic structural diagram of a rotating drum in an embodiment of the present invention;
[0028] Figure 8 Schematic diagram of the structure of the sleeve in the embodiment of the present invention. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0030] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.
[0032] like Figures 1 to 4 As shown, a starch material environmentally friendly lunch box preparation device of the present invention includes a molding structure, which includes a horizontal cylinder 1 with a horizontal axis and a plurality of mold cavities 2 opened on the circumferential inner wall of the horizontal cylinder 1, and ribs 3 are provided on both end faces of the horizontal cylinder 1; wherein, when liquid raw materials are poured into the horizontal cylinder 1 between the two ribs 3, the raw materials fill the mold cavities 2 due to their own fluidity, and when the horizontal cylinder 1 rotates around its own axis, excess raw materials in the mold cavities 2 flow out to other mold cavities 2, and a thin layer is formed on the inner wall of the mold cavity 2.
[0033] In the above embodiment, the high-temperature fluid raw material made of starch material is continuously introduced into the lower side of the inner part of the horizontal cylinder 1, and the two ribs 3 are mainly used to block the raw material, so as to prevent the raw material from flowing out and causing waste. It should be pointed out that due to the gravity of the raw material and the rotational movement of the horizontal cylinder 1, the raw material flows on the circumferential inner wall of the horizontal cylinder 1, and the raw material will adhere to the inner wall of the horizontal cylinder 1 and form a thin layer. The raw material will also form a thin layer on the inner wall of the mold cavity 2. As the horizontal cylinder 1 rotates, the excess raw material in the mold cavity 2 will automatically flow out, thereby making the raw material attached to the inner wall of the mold cavity 2 automatically form a lunch box shape. As the horizontal cylinder 1 continues to rotate, the mold cavity 2 carries the raw material therein to move synchronously, and the raw material gradually cools and takes shape. When the mold cavity 2 moves to the specified position, the lunch box formed in the mold cavity 2 is shoveled out, thereby completing the preparation of tableware.
[0034] It can be seen that since the raw materials are directly attached to the circumferential inner wall of the horizontal cylinder 1 and the inner wall of the mold cavity 2, the raw materials on the circumferential inner wall of the horizontal cylinder 1 and the raw materials on the inner wall of the mold cavity 2 will become a plate-like whole after cooling and shaping, so that it is convenient to directly remove them from the horizontal cylinder 1, and as the horizontal cylinder 1 continues to rotate, the raw materials continue to be formed in the horizontal cylinder 1, and the horizontal cylinder 1 continues to output the plate-like structure, which will carry a large amount of tableware. The mold cavity 2 with the tableware removed will continue to rotate to the bottom of the horizontal cylinder 1 and accept the raw materials, thereby realizing the continuous production and processing of tableware.
[0035] Based on the above embodiment, in order to speed up the cooling work, a cooling structure can be configured on the horizontal cylinder 1, so as to facilitate the rapid molding of tableware, and in order to adjust the wall thickness of the tableware, the opening timing and position of the cooling structure can be controlled. In order to facilitate the removal of the tableware, a thin layer of oil can be sprayed or applied on the inner wall of the mold cavity 2, so as to facilitate demolding without affecting the molding of the raw materials.
[0036] The equipment allows the continuous introduction of liquid raw materials, and through the rotating horizontal cylinder 1 and the internal mold cavity 2, the raw materials can form lunch boxes in a continuous process, thereby improving production efficiency; the entire process does not require human intervention, and the excess raw materials in the mold cavity 2 will automatically flow to other mold cavities 2 as the horizontal cylinder 1 rotates, reducing the need for manual operation and also reducing labor intensity; the structure is simple, easy to operate, highly continuous, and occupies little space; in summary, this new type of starch-based lunch box preparation equipment can effectively improve production efficiency, reduce raw material waste, simplify the operating process, and can realize a continuous production mode, which has significant advantages for large-scale production of environmentally friendly lunch boxes.
[0037] In some embodiments of the present invention, Figures 5 to 8 As shown, an air blowing unit for cooling the raw material is arranged in the horizontal cylinder 1, and the air blowing unit includes an air diffusion pipe 4, an air supply pipe 5 for supplying air into the air diffusion pipe 4, and a plurality of sleeves 6 arranged on the air diffusion pipe 4, one end of the sleeve 6 is inserted into the air diffusion pipe 4 and is connected to each other, the sleeve 6 can rotate on the air diffusion pipe 4, the other end of the sleeve 6 is connected to a nozzle 7, the nozzle 7 is inclined, and a plurality of fan plates 8 are arranged in the sleeve 6.
[0038] In the above embodiment, the gas supply pipe 5 can be supplied with gas through an external air pump, and the supplied gas can be one of low temperature, normal temperature and high temperature according to actual needs. The diffuser pipe 4 is mainly used to disperse the gas into multiple sleeves 6, and the sleeves 6 are rotatably installed on the diffuser pipe 4 and connected with each other. During actual assembly, two rings can be set on the outer wall of the sleeve 6, and the two rings are respectively located on the inner and outer sides of the diffuser pipe 4, so that the diffuser pipe 4 and the sleeve 6 can be connected and connected in rotation. Of course, other conventional connection methods can also be used. When the gas enters the sleeve 6, due to the effect of the gas on the multiple fan plates 8, the sleeve 6 can be in a rotating state, so that the nozzle 7 can also be in a rotating state. The nozzle 7 is inclined relative to the axis of the sleeve 6. When the gas is ejected through the nozzle 7, the nozzle 7 will perform a rotating jet operation, and the gas ejected from the nozzle 7 will enter the mold cavity 2 and perform aeration cooling treatment on the raw material on the inner wall of the mold cavity 2.
[0039] It should be pointed out that the nozzle 7 is located above the horizontal plane where the axis of the horizontal cylinder 1 is located, so that the raw materials in the mold cavity 2 can flow out naturally, and when there is a lot of residual raw materials in the mold cavity 2, the gas discharged by the nozzle 7 will not blow the raw materials away at will. Multiple sleeves 6 are arranged along the axial direction of the horizontal cylinder 1, so that multiple nozzles 7 can perform air blowing treatment on the mold cavity 2 passing through the location of the nozzle 7.
[0040] It can be seen that the airflow not only cools the raw materials on the inner wall of the mold cavity 2, but also the raw materials on the inner wall of the mold cavity 2 that are uneven can be dispersed by blowing of the nozzle 7, thereby ensuring that the wall thickness of the lunch box in the mold cavity 2 is consistent. The inclined design of the nozzle 7 can help disperse the airflow, thereby avoiding the wall thickness of the lunch box being too thin when fixed-point blowing, thereby affecting the quality of the lunch box.
[0041] In some embodiments of the present invention, Figure 5 As shown, a shield 9 for accommodating a plurality of sleeves 6 is provided on the air diffusion pipe 4 , and the shield 9 is located on the inner side of the horizontal cylinder 1 .
[0042] In the above embodiment, the baffle 9 mainly serves to shield the working space of multiple sleeves 6 and multiple nozzles 7, so as to prevent the nozzles 7 from blowing away the excess raw materials in the mold cavity 2 at will. The lower opening of the baffle 9 can help the baffle 9 intercept the collected raw materials and discharge them, so that the raw materials are always kept in the horizontal cylinder 1. It should be pointed out that the baffle 9 is in a close state to the horizontal cylinder 1 and the retaining edge 3, so that the baffle 9 will not affect the movement of the horizontal cylinder 1 and the retaining edge 3.
[0043] In some embodiments of the present invention, Figure 6 to Figure 7 As shown, the preparation equipment further includes a discharge structure, which includes a fixed cylinder 10 located in the middle of the horizontal cylinder 1 and a rotating cylinder 11 located outside the horizontal cylinder 1. The fixed cylinder 10 is coaxial with the rotating cylinder 11, and an opening 12 is opened on the outer wall of the fixed cylinder 10;
[0044] Support rings 13 are provided at both ends of the rotating cylinder 11. The rotating cylinder 11 rotates between the two support rings 13. The two support rings 13 are fixedly connected by a bottom plate 14. The fixed cylinder 10 is connected to one support ring 13 in a butt connection. A plurality of support shafts 15 are provided in the rotating cylinder 11. The plurality of support shafts 15 are distributed in a ring shape around the axis of the rotating cylinder 11. The two ends of the support shafts 15 are respectively fixedly mounted on the two support rings 13. A plurality of conveying wheels 16 are rotatably provided on the support shafts 15. The axes of the conveying wheels 16 are relatively inclined to the axis of the rotating cylinder 11.
[0045] The inner wall of the rotating drum 11 is transmission-connected to the conveying wheel 16 .
[0046] In the above embodiment, the lunch box cooled and shaped in the horizontal cylinder 1 can enter the fixed cylinder 10 through the opening 12. Since the removed lunch box is connected together by the raw materials cooled on the circumferential inner wall of the horizontal cylinder 1, it can be transported into the fixed cylinder 10 through the opening 12. The tableware connected together in the fixed cylinder 10 can enter the rotating cylinder 11 in a spiral shape. When the rotating cylinder 11 rotates, it will drive a plurality of inclined conveying wheels 16 to rotate. The conveying wheels 16 will convey the tableware at an angle, so that the connected tableware is spirally output along the axial direction of the rotating cylinder 11 to the outside of the rotating cylinder 11, thereby realizing the unloading work.
[0047] It can be seen from the above embodiments that the fixed cylinder 10 and the rotating cylinder 11 are coaxially connected, and the support ring 13 and the bottom plate 14 are mainly used to support the fixed cylinder 10 and the rotating cylinder 11 .
[0048] Optional, such as Figure 5 As shown, a first motor 17 is fixed on the bottom plate 14 , and a first transmission wheel 18 is provided at the output end of the first motor 17 , and the first transmission wheel 18 is transmission-connected to the outer wall of the rotating cylinder 11 .
[0049] In the above embodiment, the first motor 17 and the first transmission wheel 18 are mainly used to provide rotational power for the rotating drum 11, thereby driving the plurality of conveying wheels 16 to rotate.
[0050] Optional, such as Figure 5 As shown, a material delivery pipe 19 is provided at the bottom of the fixed cylinder 10 , and a plurality of material discharge branch pipes 20 are connected to the bottom of the material delivery pipe 19 .
[0051] In the above embodiment, the fluid raw material can be introduced downward into the transverse cylinder 1 through the feed pipe 19 and a plurality of discharge branch pipes 20, thereby realizing continuous feeding into the transverse cylinder 1.
[0052] In some embodiments of the present invention, Figure 6 As shown, a plurality of guide plates 21 are fixed in the opening 12 , and a narrow scraper 22 is fixed at the end of each guide plate 21 facing the inner wall of the horizontal cylinder 1 .
[0053] In the above embodiment, the position of the narrow scraper 22 corresponds to the inner wall area of the transverse cylinder 1 between two adjacent mold cavities 2 on the inner wall of the transverse cylinder 1 along the axial direction of the transverse cylinder 1, that is, the multiple mold cavities 2 on the inner wall of the transverse cylinder 1 are divided into multiple groups, each group of mold cavities 2 is distributed in a ring shape around the axis of the transverse cylinder 1, and the multiple groups of mold cavities 2 are arranged along the axial direction of the transverse cylinder 1, and the narrow scraper 22 corresponds to the blank area on the inner wall of the transverse cylinder 1 between two adjacent groups of mold cavities 2.
[0054] The narrow scraper 22 contacts the inner wall of the horizontal cylinder 1. When the horizontal cylinder 1 rotates, the shaped raw materials on the inner wall of the horizontal cylinder 1 move to the position of the narrow scraper 22. The narrow scraper 22 scoops up the raw materials in the blank area of the inner wall of the horizontal cylinder 1, thereby separating it from the horizontal cylinder 1. This part of the raw materials will cause the lunch box shaped in the mold cavity 2 to separate from the mold cavity 2, thereby realizing the demolding work. The setting of the guide plate 21 can help transport the connecting raw materials between the lunch boxes and introduce them into the fixed cylinder 10.
[0055] In some embodiments of the present invention, Figure 1 As shown, at least two transmission rings 23 are arranged on the outer wall of the transverse cylinder 1, and at least two second transmission wheels 24 are arranged on each transmission ring 23, and the second transmission wheels 24 are located at the lower side of the transmission ring 23 and are used to provide support for the transmission ring 23, and a second motor 25 for providing power thereto is arranged on one second transmission wheel 24.
[0056] In the above embodiment, the multiple second transmission wheels 24 on the transmission ring 23 are used to provide support for the transmission ring 23, so as to provide support for the transverse cylinder 1. The second motor 25 can provide rotational power for a second transmission wheel 24, thereby driving the transmission ring 23 and the transverse cylinder 1 to rotate.
[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A starch material environmentally friendly lunch box preparation device, characterized in that: include: A molding structure, the molding structure comprising a horizontal cylinder with a horizontal axis and a plurality of mold cavities provided on the inner circumferential wall of the horizontal cylinder, and retaining edges are provided on both end surfaces of the horizontal cylinder; Among them, when the liquid raw material is poured into the horizontal cylinder between the two ribs, the raw material fills the mold cavity due to its own fluidity. When the horizontal cylinder rotates around its own axis, the excess raw material in the mold cavity flows out to other mold cavities and forms a thin layer on the inner wall of the mold cavity.
2. The starch material environmentally friendly lunch box preparation device according to claim 1, characterized in that: An air blowing unit for cooling the raw material is arranged in the horizontal cylinder, and the air blowing unit includes an air diffusion pipe, an air supply pipe for supplying air into the air diffusion pipe, and a plurality of sleeves arranged on the air diffusion pipe, one end of the sleeve is inserted into the air diffusion pipe and is connected to each other, the sleeve can rotate on the air diffusion pipe, the other end of the sleeve is connected to a nozzle, the nozzle is inclined, and a plurality of fan plates are arranged in the sleeve.
3. The starch material environmentally friendly lunch box preparation device according to claim 2, characterized in that: The diffuser pipe is provided with a shield for accommodating a plurality of sleeves, and the shield is located inside the horizontal cylinder.
4. The starch material environmentally friendly lunch box preparation device according to claim 3, characterized in that: The preparation equipment also includes a discharge structure, which includes a fixed cylinder located in the middle of the horizontal cylinder and a rotating cylinder located outside the horizontal cylinder, the fixed cylinder is coaxial with the rotating cylinder, and an opening is opened on the outer wall of the fixed cylinder; Support rings are provided at both ends of the rotating cylinder. The rotating cylinder rotates between the two support rings. The two support rings are fixedly connected by a bottom plate. The fixed cylinder is connected to one support ring. A plurality of support shafts are provided in the rotating cylinder. The plurality of support shafts are distributed in a ring shape around the axis of the rotating cylinder. The two ends of the support shafts are respectively fixedly mounted on the two support rings. A plurality of conveying wheels are rotatably provided on the support shafts. The axes of the conveying wheels are relatively inclined to the axis of the rotating cylinder. The inner wall of the rotating cylinder is transmission-connected with the conveying wheel.
5. The starch material environmentally friendly lunch box preparation device according to claim 4, characterized in that: A first motor is fixed on the bottom plate, a first transmission wheel is arranged at the output end of the first motor, and the first transmission wheel is transmission-connected with the outer wall of the rotating cylinder.
6. The starch material environmentally friendly lunch box preparation device according to claim 5, characterized in that: The bottom of the fixed cylinder is provided with a material delivery pipe, and the bottom of the material delivery pipe is connected with a plurality of material discharge branch pipes.
7. The starch material environmentally friendly lunch box preparation device according to claim 6, characterized in that: A plurality of guide plates are fixed in the opening, and a narrow scraper is fixed at the end of each guide plate facing the inner wall of the horizontal cylinder.
8. The starch material environmentally friendly lunch box preparation device according to claim 7, characterized in that: At least two transmission rings are arranged on the outer wall of the transverse cylinder, each transmission ring is provided with at least two second transmission wheels, and the second transmission wheels are located at the lower side of the transmission ring and are used to provide support for the transmission ring, and a second transmission wheel is provided with a second motor for providing power therefor.
Citation Information
Patent Citations
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CN212636200U
Plastic lunch box injection mold
CN221913060U