Automatic transfer and automatic loading and unloading system for steam cars

By integrating a steaming tray unloading machine, a tray loading machine, and a transfer mechanism, combined with a robotic arm and linear guide drive, the problems of low efficiency and wasted space in the steamed bun production line are solved, achieving efficient transfer and loading/unloading of steaming trays and saving equipment space.

CN116477344BActive Publication Date: 2026-05-05ZHONGYUAN GRAIN GRP DUOFUDUO FOOD CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGYUAN GRAIN GRP DUOFUDUO FOOD CO LTD
Filing Date
2023-04-26
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing automated steamed bun production lines are inefficient and occupy a lot of space. In particular, the process of loading dough onto the steaming cart and unloading the steamed buns requires long-distance pushing and a dedicated transfer channel, resulting in wasted time and space.

Method used

The design integrates a steaming tray unloading machine, a steaming tray loading machine, and a steaming cart transfer mechanism. It combines an X-axis robotic arm, a Y-axis robotic arm, and a loading and unloading tray fixture assembly to achieve automatic transfer and loading/unloading of steaming trays. The linear guide rail and cylinder drive reduce the need for linear arrangement. The use of wire mesh welded mesh as steaming trays reduces the requirements for rigidity and flatness.

Benefits of technology

It improves production efficiency, reduces space occupation, saves the need for external transfer channels, and increases the transport speed of steaming trays and the space utilization efficiency inside the equipment.

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Abstract

This invention discloses an automatic steam cart transfer and automatic loading / unloading system, including a steam tray unloading machine mechanism and a steam tray loading machine mechanism. A steam cart transfer mechanism is fixedly installed on one side of the steam tray unloading and loading machine mechanisms, and a steam tray transfer cart is installed inside the steam cart transfer mechanism. A steam bun unloading machine is fixedly installed on the other side of the steam tray unloading and loading machine mechanisms. Through the coordinated arrangement of the steam tray unloading and loading machine mechanism, the steam cart transfer mechanism, and the steam bun unloading machine, this automatic steam cart transfer and automatic loading / unloading system achieves high production efficiency and a small footprint.
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Description

Technical Field

[0001] This invention relates to the field of food equipment technology, specifically to an automatic transfer and automatic loading / unloading system for steaming carts. Background Technology

[0002] Steamed buns are a type of food made from fermented dough, with wheat flour as the main ingredient. They are one of the staple foods of Chinese people, resulting in a very large daily demand. To meet the production needs, machinery is generally used to replace manual labor. However, the existing automated steamed bun production setups are generally linear flow lines. This means that the steaming carts need to be fixed at the front and back ends of the production line during the loading and unloading of dough, requiring long-distance pushing and fixing, which wastes time and is inefficient. In addition, a dedicated transfer channel is required, which occupies extra space. Linear flow production lines use conveyor belts and robotic arms to move pallets, which requires the pallets to be rigid and have a flat bottom, so water can accumulate inside the pallets. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides an automatic transfer and loading / unloading system for steaming carts, which has the advantages of high production efficiency and small footprint, thus solving the problems of low production efficiency and large footprint.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned goals of high production efficiency and small space occupation, the present invention provides the following technical solution: an automatic transfer and automatic loading and unloading system for steaming carts, comprising a steaming tray unloading machine mechanism and a steaming tray loading machine mechanism, wherein a steaming cart transfer mechanism is fixedly installed on one side of the steaming tray unloading machine mechanism and the steaming tray loading machine mechanism, and a steaming tray transfer cart is provided inside the steaming cart transfer mechanism; and a steamed bun unloading machine is fixedly installed on the other side of the steaming tray unloading machine mechanism and the steaming tray loading machine mechanism.

[0007] The steaming tray unloading machine mechanism is equipped with an X-axis robotic arm that reciprocates up and down. Below the X-axis robotic arm, a Y-axis robotic arm reciprocates along the X-axis robotic arm direction. Below the Y-axis robotic arm, a loading and unloading tray clamping assembly reciprocates along the Y-axis robotic arm direction. Inside the loading and unloading tray clamping assembly, a gripping fixture reciprocates along the Y-axis robotic arm direction.

[0008] The steam cart transfer mechanism is equipped with an inlet clamp on the side near the steam tray unloading machine mechanism, an outlet clamp on the side near the steam tray loading machine mechanism, and a transfer clamp on the top of the steam cart transfer mechanism.

[0009] The steamed bun unloading machine has unloading claws on one side near the steaming tray unloading mechanism and loading claws on the other side near the steaming tray loading mechanism. A steamed bun unloading conveyor belt is installed between the unloading claws and the loading claws. A steamed bun gripping plate is installed above the steamed bun unloading conveyor belt. A steaming tray conveyor belt is installed below the unloading claws and the loading claws. A steamed bun loading tray is installed below the steaming tray conveyor belt near the steamed bun unloading conveyor belt.

[0010] Preferably, the infeed clamp, the outfeed clamp, and the transfer clamp are all mounted on linear guide rails and driven by cylinders to reciprocate. The infeed clamp, the outfeed clamp, and the transfer clamp all grip the steaming tray transfer car with cylinders.

[0011] Preferably, the steaming cart transfer mechanism is equipped with a C-shaped channel. After the steaming tray transfer cart enters the channel, it is clamped by the inlet clamp and transported to the side near the steaming tray unloading machine mechanism for unloading. After unloading, the steaming tray transfer cart is clamped by the transfer clamp and transported to the side of the steaming tray loading machine mechanism for loading. After loading, the steaming tray transfer cart is clamped by the outlet clamp and transported out of the steaming cart transfer mechanism.

[0012] Preferably, the steaming tray unloading machine mechanism and the steaming tray loading machine mechanism have the same structure. The gripping fixture is driven by the combined X-axis robotic arm, Y-axis robotic arm and loading / unloading tray clamp assembly. The internal gripping fixture of the steaming tray unloading machine mechanism can move all the steaming trays in the steaming tray transfer car to the unloading jaws, and the internal gripping fixture of the steaming tray loading machine mechanism can move the steaming trays on the loading jaws into the steaming tray transfer car.

[0013] Preferably, both the unloading and loading jaws are controlled by a cylinder to move up and down and open and close. When the unloading and loading jaws are closed, they can lift the steaming tray. When the unloading and loading jaws are open, they can lower the steaming tray. When the unloading jaws move down and open, they can place the steaming tray onto the steaming tray conveyor belt. When the loading jaws move down and close, they can grab the steaming tray on the steaming tray conveyor belt.

[0014] Preferably, the steaming tray conveyor belt can transport the steaming tray from below the unloading clamp to below the steamed bun unloading conveyor belt and the loading clamp, and there is a gap between the steamed bun unloading conveyor belt and the steaming tray conveyor belt, and the gap size is greater than the height of the steamed bun.

[0015] Preferably, there are two steamed bun unloading conveyor belts with a gap between them. The steamed bun gripping clamp can move up and down and horizontally. When the steamed bun gripping clamp moves downward, it grabs the steamed buns from the steaming tray conveyor belt between the two steamed bun unloading conveyor belts and places them above the steamed bun unloading conveyor belt. When the steamed bun unloading conveyor belt rotates, it can transport the steamed buns into the steamed bun loading tray.

[0016] Preferably, the steaming tray is a wire mesh plate welded from steel wire mesh. The gripping fixture includes hooks and jaws. The hooks can be inserted into the mesh holes of the steaming tray and then pull the steaming tray into the loading and unloading tray clamp assembly or push the steaming tray out of the loading and unloading tray clamp assembly. The jaws can clamp the edge of the steaming tray and then pull the steaming tray into the loading and unloading tray clamp assembly or push the steaming tray out of the loading and unloading tray clamp assembly.

[0017] Preferably, the inner side of the steaming tray transfer vehicle, both sides below the loading and unloading tray clamp assembly, the unloading claw, and the loading claw are all equipped with right-angled metal plates that can support the sides of the steaming tray, and these right-angled metal plates are horizontally aligned during the transportation of the steaming tray.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides an automatic transfer and automatic loading and unloading system for steaming carts, which has the following beneficial effects:

[0020] 1. This automatic transfer and loading / unloading system for steaming carts, through the coordinated arrangement of a steaming tray unloading machine, a steaming tray loading machine, a steaming cart transfer mechanism, and a steamed bun unloading machine, achieves high production efficiency and a small footprint. The steaming tray unloading machine, steaming tray loading machine, steaming cart transfer mechanism, and steamed bun unloading machine are not arranged in a straight line but are concentrated and fixed close to each other, thus occupying little space. At the same time, the two workstations for loading and unloading trays of the steaming cart are adjacent to each other, and the steaming cart automatically changes position inside the equipment, thus saving time and improving efficiency. There is no need to set up a special steaming cart transfer channel outside the equipment, thus achieving the effect of saving space.

[0021] 2. The automatic transfer and automatic loading and unloading system of the steaming cart, the steaming tray unloading machine mechanism, the steaming tray loading machine mechanism, the steaming cart transfer mechanism and the steamed bun unloading machine all use right-angle metal plates to transport and support the steaming trays. Therefore, the steaming trays do not require good rigidity and flatness and can be directly made of wire mesh. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the overall three-dimensional view of the automatic transfer and automatic loading / unloading system for steaming carts proposed in this invention;

[0023] Figure 2 This is a top view of the overall structure of the automatic transfer and automatic loading / unloading system for steaming carts proposed in this invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the steam tray unloading machine mechanism of the automatic transfer and automatic loading / unloading system for steam carts proposed in this invention;

[0025] Figure 4This is a partial three-dimensional view of the steam tray unloading machine mechanism of the automatic transfer and automatic loading / unloading system for steam carts proposed in this invention.

[0026] Figure 5 This is a partial three-dimensional view of the automatic transfer and automatic loading / unloading system for steaming carts proposed in this invention.

[0027] Figure 6 This is a partial three-dimensional view of the steam cart transfer mechanism of the automatic transfer and automatic loading / unloading system for steam carts proposed in this invention.

[0028] Figure 7 This is a structural schematic diagram of the first perspective view of the steamed bun unloading machine of the automatic transfer and automatic loading and unloading system of the steamed cart proposed in this invention;

[0029] Figure 8 This is a structural schematic diagram of the second perspective view of the automatic transfer and automatic loading / unloading system for steamed buns proposed in this invention.

[0030] In the diagram: 1. Steaming tray unloading machine mechanism; 101. X-axis robotic arm; 102. Y-axis robotic arm; 103. Loading and unloading tray clamp assembly; 104. Gripping fixture; 2. Steaming tray loading machine mechanism; 3. Steaming cart transfer mechanism; 301. Carriage entry clamp; 302. Carriage exit clamp; 303. Transfer clamp; 4. Steaming tray transfer cart; 5. Steamed bun unloading machine; 501. Unloading clamp; 502. Loading clamp; 503. Steamed bun unloading conveyor belt; 504. Steamed bun gripping clamp; 505. Steaming tray conveyor belt; 506. Steamed bun loading tray. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-8An automatic transfer and loading / unloading system for steaming carts includes a steaming tray unloading mechanism 1 and a steaming tray loading mechanism 2, which are fixed side-by-side. The steaming tray unloading mechanism 1 has an X-axis robotic arm 101 that reciprocates vertically. Below the X-axis robotic arm 101, a Y-axis robotic arm 102 reciprocates along the X-axis. Below the Y-axis robotic arm 102, a loading / unloading tray clamping assembly 103 reciprocates along the Y-axis. Inside the loading / unloading tray clamping assembly 103, a gripping fixture 104 reciprocates along the Y-axis. The steaming trays are made of welded wire mesh. The gripping fixture 104 includes hooks and grippers. The hooks can... Insert the tray into the mesh of the steaming tray, then pull the steaming tray into the loading / unloading tray clamp assembly 103 or push the steaming tray out of the loading / unloading tray clamp assembly 103. The clamps can clamp the edge of the steaming tray. A steaming cart transfer mechanism 3 is fixedly installed on one side of the steaming tray unloading machine mechanism 1 and the steaming tray loading machine mechanism 2. An inlet clamp 301 is provided on the side of the steaming cart transfer mechanism 3 near the steaming tray unloading machine mechanism 1, and an outlet clamp 302 is provided on the side of the steaming cart transfer mechanism 3 near the steaming tray loading machine mechanism 2. A transfer clamp 303 is provided on the top of the steaming cart transfer mechanism 3. A steaming tray transfer cart 4 is provided inside the steaming cart transfer mechanism 3. The inlet clamp 301 and the outlet clamp 302 are also provided. Both clamp 302 and transfer clamp 303 are mounted on linear guide rails and driven by cylinders for reciprocating motion. The infeed clamp 301, the outfeed clamp 302, and the transfer clamp 303 all grip the steaming tray transfer car 4 via cylinders. The steaming tray transfer mechanism 3 has a C-shaped channel inside. After entering the channel, the steaming tray transfer car 4 is clamped by the infeed clamp 301 and transported to the side near the steaming tray unloading machine mechanism 1 for unloading. After unloading, the steaming tray transfer car 4 is clamped by the transfer clamp 303 and transported to the side of the steaming tray loading machine mechanism 2 for loading. After loading, the steaming tray transfer car 4 is clamped by the outfeed clamp 302 and transported out of the steaming tray transfer mechanism 3. A steamed bun unloading machine 5 is fixedly installed on the other side of the steaming tray unloading machine mechanism 1 and the steaming tray loading machine mechanism 2 for unloading steamed buns. A tray unloading gripper 501 is provided on the side of the steaming tray unloading machine mechanism 1, and a tray loading gripper 502 is provided on the side of the steaming tray loading machine mechanism 2. A steamed bun unloading conveyor belt 503 is provided between the tray unloading gripper 501 and the tray loading gripper 502. A steamed bun gripping clamp 504 is provided above the steamed bun unloading conveyor belt 503. A steaming tray conveyor belt 505 is provided below the tray unloading gripper 501 and the tray loading gripper 502. A steamed bun loading tray 506 is provided below the steaming tray conveyor belt 505 near the steamed bun unloading conveyor belt 503. The steaming tray unloading machine mechanism 1 and the steaming tray loading machine mechanism 2 have the same structure. The gripping fixture 104 is driven by the combined action of the X-axis robotic arm 101, the Y-axis robotic arm 102, and the loading and unloading tray fixture assembly 103.The steam tray unloading mechanism 1 drives the internal gripping fixture 104 to move all the steam trays in the steam tray transfer cart 4 onto the unloading gripper 501. The steam tray loading mechanism 2 drives the internal gripping fixture 104 to move the steam trays on the loading gripper 502 into the steam tray transfer cart 4. Both the unloading gripper 501 and the loading gripper 502 are controlled by cylinders to move up and down and open and close. When the unloading gripper 501 and the loading gripper 502 are closed, they can lift the steam trays. When the unloading gripper 501 and the loading gripper 502 are open, they can lower the steam trays. The unloading gripper 501 moves downward and opens. The steaming tray can be placed on the steaming tray conveyor belt 505. When the tray clamp 502 moves downward and closes, it can grab the steaming tray on the steaming tray conveyor belt 505. There are two steamed bun unloading conveyor belts 503 with a gap between them. The steamed bun gripping clamp 504 can move up and down and horizontally. When the steamed bun gripping clamp 504 moves downward, it grabs the steamed buns from the steaming tray conveyor belt 505 between the two steamed bun unloading conveyor belts 503 and places them above the steamed bun unloading conveyor belt 503. When the steamed bun unloading conveyor belt 503 rotates, it can transport the steamed buns into the steamed bun loading tray 506.

[0033] In use, the steaming tray unloading machine mechanism 1 and the steaming tray loading machine mechanism 2 are first fixed side by side. Then, a steaming cart transfer mechanism 3 is fixed to one side of the steaming tray unloading machine mechanism 1 and the steaming tray loading machine mechanism 2. Finally, a steamed bun unloading and unloading mechanism is fixed to the other side of the steaming tray unloading machine mechanism 1 and the steaming tray loading machine mechanism 2. Taking the steamed bun unloading machine 5 as an example, the specific process of unloading steamed buns through this system is as follows: First, the steaming tray transfer cart 4, which has just been steamed, is pushed into the steaming cart transfer mechanism 3. Then, the infeed clamp 301 clamps the steaming tray transfer cart 4. Then, through the cooperation of a cylinder and a linear guide rail, it is pulled closer to the steaming tray unloading machine mechanism 1. Simultaneously, a steaming cart transfer mechanism 3 is fixed inside the steaming tray loading machine mechanism 2 by an outfeed clamp 302. An empty steaming tray transfer cart 4 is used. The gripping fixture 104 inside the steaming tray unloading machine mechanism 1, driven by the vertically moving X-axis robotic arm 101 and Y-axis robotic arm 102 and the loading / unloading tray clamp assembly 103, pulls the steaming trays filled with cooked steamed buns inside the steaming tray transfer cart 4 to below the loading / unloading tray clamp assembly 103. The loading / unloading tray clamp assembly 103, driven by the vertically moving X-axis robotic arm 101 and Y-axis robotic arm 102, aligns the steaming trays inside the loading / unloading tray clamp assembly 103 with the unloading tray grippers 501. Then, the loading / unloading tray clamp assembly 103 drives the gripping fixture 104 to push the steaming trays from inside the loading / unloading tray clamp assembly 103 into the unloading tray grippers 501. Finally, the unloading tray grippers 501 move downwards and open... The steaming tray is placed above the steaming tray conveyor belt 505. The conveyor belt 505 then transports the tray below the steamed bun unloading conveyor belt 503. The steamed bun gripping clamp 504 moves downwards, gripping the steamed buns on the conveyor belt 505 and transporting them upwards to above the steamed bun unloading conveyor belt 503. The steamed bun unloading conveyor belt 503 rotates, and the steamed buns fall from one end into the steamed bun loading tray 506. Simultaneously, the steaming tray conveyor belt 505 adjusts the position of the steaming tray and continues to grip the steamed buns using the gripping clamp 504. Once all the steamed buns on the tray have been gripped, the conveyor belt 505 transports the empty tray below the loading clamp 502. The loading clamp 502 then opens and moves downwards to grip the empty tray. The empty steaming tray is then lifted upwards by the tray loading clamp and placed into the steaming tray transfer cart 4 by the tray loading machine mechanism 2. The action of the tray loading machine mechanism 2 transporting the steaming tray from the loading clamp 502 to the empty steaming tray is the same as the action of the tray unloading machine mechanism 1 transporting the steaming tray full of steamed buns from the steaming tray transfer cart 4 to the unloading clamp 501. By repeating the above steps, the steamed buns in the steaming tray transfer cart 4 on one side of the tray unloading machine mechanism 1 can be removed and placed into the steamed bun loading tray 506, and the empty steaming trays can be loaded into the steaming tray transfer cart 4 on the side close to the tray loading machine mechanism 2. When the steamed buns in the steaming tray transfer cart 4 on the side of the tray unloading machine mechanism 1 are completely removed, the steaming tray transfer cart 4 on the side of the tray loading machine mechanism 2 is also filled with empty steaming trays.Further, the ejector clamp 302, in cooperation with the cylinder and linear guide rail, pushes the steaming tray transfer cart 4 filled with empty steaming trays out of the steaming cart transfer mechanism 3. The further transfer clamp 303 transports the empty steaming tray transfer cart 4, which has just unloaded the steamed buns, from one side of the steaming tray unloading machine mechanism 1 to the other side of the steaming tray loading machine mechanism 2. Then, the steaming tray transfer cart 4 filled with steamed buns is pushed into the steaming cart transfer mechanism 3 and fixed by the infeed clamp 301. Through the above steps, the steaming tray transfer cart 4 is automatically transferred and the steamed buns are removed. During this process, the steaming tray transfer cart 4 automatically changes position directly inside the steaming cart transfer mechanism 3, and the loading and unloading positions are very close, resulting in a fast position change speed for the steaming tray transfer cart 4, improving production efficiency. Furthermore, it eliminates the need for a dedicated passage for the steaming tray transfer cart 4 outside the equipment, thus saving space.

[0034] In summary, the steaming tray unloading machine 1, steaming tray loading machine 2, steaming cart transfer mechanism 3, and steamed bun unloading machine 5 in this automatic steaming cart transfer and automatic loading / unloading system are not arranged in a straight line but are concentrated and fixed close to each other, thus occupying little space. At the same time, the two workstations for loading and unloading trays of the steaming cart are close to each other, and the steaming cart automatically changes position inside the equipment, thus saving time and improving efficiency. There is no need to set up a special steaming cart transfer channel outside the equipment, thus achieving the effect of saving space. Furthermore, the steaming tray unloading machine 1, steaming tray loading machine 2, steaming cart transfer mechanism 3, and steamed bun unloading machine 5 all transport and support the steaming trays through right-angle metal plates. Therefore, the steaming trays do not require good rigidity and flatness and can be directly made of wire mesh.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic transfer and automatic loading / unloading system for steaming carts, comprising a steaming tray unloading mechanism (1) and a steaming tray loading mechanism (2), characterized in that: A steaming cart transfer mechanism (3) is fixedly installed on one side of the steaming tray unloading machine mechanism (1) and the steaming tray loading machine mechanism (2). A steaming tray transfer cart (4) is installed inside the steaming cart transfer mechanism (3). A steamed bun unloading machine (5) is fixedly installed on the other side of the steaming tray unloading machine mechanism (1) and the steaming tray loading machine mechanism (2). The steaming tray unloading machine mechanism (1) is equipped with an X-axis robotic arm (101) that moves up and down reciprocally. Below the X-axis robotic arm (101) is a Y-axis robotic arm (102) that moves back and forth along the direction of the X-axis robotic arm (101). Below the Y-axis robotic arm (102) is a loading and unloading tray clamping assembly (103) that moves back and forth along the direction of the Y-axis robotic arm (102). Inside the loading and unloading tray clamping assembly (103) is a gripping fixture (104) that moves back and forth along the direction of the Y-axis robotic arm (102). The steam car transfer mechanism (3) is provided with an inlet clamp (301) on the side near the steam tray unloading machine mechanism (1), and an outlet clamp (302) on the side near the steam tray loading machine mechanism (2). The top of the steam car transfer mechanism (3) is provided with a transfer clamp (303). The steamed bun unloading machine (5) is provided with a tray unloading claw (501) on the side near the steaming tray unloading machine mechanism (1), and a tray loading claw (502) on the side near the steaming tray loading machine mechanism (2). A steamed bun unloading transfer belt (503) is provided between the tray unloading claw (501) and the tray loading claw (502). A steamed bun gripping clamp (504) is provided above the steamed bun unloading transfer belt (503). A steaming tray transfer belt (505) is provided below the tray unloading claw (501) and the tray loading claw (502). A steamed bun loading tray (506) is provided below the steaming tray transfer belt (505) near the steamed bun unloading transfer belt (503).

2. The automatic transfer and automatic loading / unloading system for steaming carts according to claim 1, characterized in that: The infeed clamp (301), the outfeed clamp (302) and the transfer clamp (303) are all mounted on the linear guide rail and driven by the cylinder to reciprocate. The infeed clamp (301), the outfeed clamp (302) and the transfer clamp (303) all grip the steaming tray transfer car (4) with the cylinder.

3. The automatic transfer and automatic loading / unloading system for steaming carts according to claim 1, characterized in that: The steaming cart transfer mechanism (3) has a C-shaped channel inside. After the steaming tray transfer cart (4) enters the channel, it is clamped by the car entry clamp (301) and transported to the side near the steaming tray unloading machine mechanism (1) for unloading. After unloading, the steaming tray transfer cart (4) is clamped by the transfer clamp (303) and transported to the side of the steaming tray loading machine mechanism (2) for loading. After loading, the steaming tray transfer cart (4) is clamped by the car exit clamp (302) and transported out of the steaming cart transfer mechanism (3).

4. The automatic transfer and automatic loading / unloading system for a steaming cart according to claim 1, characterized in that: The steaming tray unloading machine mechanism (1) and the steaming tray loading machine mechanism (2) have the same structure. The gripping fixture (104) is driven by the X-axis robotic arm (101), the Y-axis robotic arm (102) and the loading and unloading tray clamp assembly (103). The steaming tray unloading machine mechanism (1) drives the gripping fixture (104) inside to move all the steaming trays in the steaming tray transfer car (4) onto the unloading gripper (501). The steaming tray loading machine mechanism (2) drives the gripping fixture (104) inside to move the steaming trays on the loading gripper (502) into the steaming tray transfer car (4).

5. The automatic transfer and automatic loading / unloading system for a steaming cart according to claim 1, characterized in that: Both the unloading jaw (501) and the loading jaw (502) are controlled by cylinders to move up and down and open and close. When the unloading jaw (501) and the loading jaw (502) are closed, they can lift the steaming tray. When the unloading jaw (501) and the loading jaw (502) are open, they can put down the steaming tray. When the unloading jaw (501) moves down and opens, it can put the steaming tray on the steaming tray conveyor belt (505). When the loading jaw (502) moves down and closes, it can grab the steaming tray on the steaming tray conveyor belt (505).

6. The automatic transfer and automatic loading / unloading system for a steaming cart according to claim 1, characterized in that: The steaming tray conveyor belt (505) can transport the steaming tray from below the unloading clamp (501) to below the steamed bun unloading conveyor belt (503) and the loading clamp (502). There is a gap between the steamed bun unloading conveyor belt (503) and the steaming tray conveyor belt (505), and the gap size is greater than the height of the steamed bun.

7. The automatic transfer and automatic loading / unloading system for a steaming cart according to claim 1, characterized in that: There are two steamed bun unloading conveyor belts (503) with a gap in between. The steamed bun grabbing clamp (504) can move up and down and horizontally. When the steamed bun grabbing clamp (504) moves down, it grabs the steamed buns on the steaming tray conveyor belt (505) between the two steamed bun unloading conveyor belts (503) and places them above the steamed bun unloading conveyor belt (503). When the steamed bun unloading conveyor belt (503) rotates, it can transport the steamed buns into the steamed bun loading tray (506).

8. The automatic transfer and automatic loading / unloading system for a steaming cart according to claim 1, characterized in that: The steaming tray is a wire mesh plate welded from steel wire mesh. The gripping fixture (104) includes hooks and jaws. The hooks can be inserted into the mesh holes of the steaming tray and then the steaming tray is pulled into the loading and unloading tray clamp assembly (103) or the steaming tray inside the loading and unloading tray clamp assembly (103) can be pushed out. The jaws can clamp the edge of the steaming tray and then the steaming tray is pulled into the loading and unloading tray clamp assembly (103) or the steaming tray inside the loading and unloading tray clamp assembly (103) can be pushed out.

9. The automatic transfer and automatic loading / unloading system for a steaming cart according to claim 1, characterized in that: The inner side of the steaming tray transfer vehicle (4), the two sides below the loading and unloading tray clamp assembly (103), the unloading claw (501) and the loading claw (502) are all equipped with right-angled metal plates that can support the two sides of the steaming tray. These right-angled metal plates are horizontally aligned during the transportation of the steaming tray.

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