A freeze-dried pet food car mechanized warehousing device

Abstract

The application discloses a freeze-dried pet food trolley mechanized warehouse entering device and relates to the technical field of pet food production.The current of an electromagnet plate is slowly weakened, and a material tray is smoothly and stably slid into a tray groove under gravity or slight thrust, so that impact and collision are avoided, an operator only needs to slightly push a slide rail material taking frame, material tray shaking is avoided, material tray falling is prevented, instantaneous impact sliding of the material tray is effectively avoided, the integrity of the fragile freeze-dried food is protected, pet food in the material tray will not collide and break to produce debris due to shaking, the material tray is firmly fixed on the center position of the tray groove in three directions, the material tray is always kept stable, and the contact area and heat conduction efficiency of each material tray and a heating plate in the freeze-drying bin are completely consistent, so that products with uniform drying degree and stable quality are produced.

Description

Technical Field

[0001] This invention relates to the field of pet food production technology, specifically to a mechanized loading device for freeze-dried pet food feed carts. Background Technology

[0002] Before the material cart frame enters the freeze-drying chamber, the materials are neatly placed on material pallets. These pallets are then securely loaded onto the various layers of the material cart frame. The sealed door of the freeze-drying chamber opens automatically, pushing the material cart frame into the chamber along the fixed tracks on the floor. The freeze-drying process requires heat to sublimate the ice, but the heat cannot be directly applied to the product. The freeze-drying chamber has multiple layers of heating plates. After the material cart frame enters the chamber, its structure ensures that each pallet carrying materials can fit tightly against the upper and lower surfaces of the heating plates. Heat is transferred from the heating plates to the product through the pallets.

[0003] The existing material pallets are placed manually onto the material cart frame. However, since the pallets are placed high up on the frame, manual positioning relies entirely on eyesight and feel, making it difficult to ensure that each pallet is precisely aligned with the narrow pallet slots. This process easily leads to jamming and tilting, requiring repeated pushing and pulling adjustments. This process itself causes the material pallets to shake violently, causing the pet food inside to move, collide, stack, or even fall off the pallet edges. This directly disrupts the neat arrangement of the products, resulting in poor shape after freeze-drying and a large amount of debris, reducing the yield. Inaccurate placement also means poor contact between the pallet and the heating plate in the freeze-drying chamber, creating gaps. Air is a poor conductor of heat, which leads to uneven heat transfer, causing some products in the same batch to be over-dried and others under-dried, resulting in severely uneven product quality. Summary of the Invention

[0004] Technical problems to be solved

[0005] This invention provides a mechanized loading device for freeze-dried pet food carts, which solves the problem of material trays at the top of the freeze-dried pet food cart frame easily shaking and tilting during material handling.

[0006] Technical solution

[0007] To facilitate the placement and retrieval of material trays at the top of the freeze-dried pet food cart frame, this invention achieves this through the following technical solution: A mechanized loading device for freeze-dried pet food carts, comprising a freeze-drying chamber and a second cart track installed on the outside of the freeze-drying chamber. Several heating plates are evenly distributed and installed inside the freeze-drying chamber. The first cart track is installed inside the freeze-drying chamber. A cart frame is movably installed on the outer surface of the second cart track. An extension frame is movably installed on the outer surface of the second cart track. Several first slide rails are evenly distributed and installed on the outer surface of the cart frame. A slide rail retrieval slide is movably installed on the outer surface of one of the first slide rails. Several tray placement racks are movably installed on the outer surface of the cart frame. Several material trays are evenly distributed and movably installed inside each of the tray placement racks. The slide rail material handling carriage is equipped with a clamping and unloading assembly, which includes an electromagnet plate and several slide rails. The electromagnet plate is installed on the outer surface of the slide rail material handling carriage, and several slide rails are installed on the outer surface of the slide rail material handling carriage. A magnetic base plate is movably installed on the outer surface of the several slide rails. Several rotating columns are evenly distributed and movably installed inside the magnetic base plate. A cross handle is installed on the bottom surface of each of the rotating columns. Cross slots and rotating grooves are evenly distributed inside the several material trays. The clamping and unloading assembly facilitates the smooth removal of material trays from the material cart frame, preventing the freeze-dried products inside the material trays from breaking.

[0008] Furthermore, a stepper motor is mounted on the top surface of the magnetic base plate, a worm gear is mounted on the outer surface of the output end of the stepper motor, and worm wheels are mounted on the outer surfaces of several rotating columns, with the outer surfaces of the worm wheels meshing with the outer surfaces of the worm gear.

[0009] Furthermore, each of the aforementioned pallet racks has a number of pallet slots inside, and the inner wall of the pallet slots is in contact with the outer surface of the material pallet.

[0010] Furthermore, each of the tray placement racks has a number of movable slots evenly distributed inside, and each of the movable slots has a number of fixed posts evenly distributed on its inner wall.

[0011] Furthermore, each of the fixed columns is equipped with a connecting spring inside, and each of the connecting springs has a movable column mounted on one end surface. The outer surfaces of the movable columns are in movable contact with the inner surfaces of the fixed columns.

[0012] Furthermore, a squeezing block is installed on the outer surface of several of the movable columns. The squeezing block has an inclined insertion surface inside, and the outer surface of the squeezing block is in movable contact with the outer surface of the material tray.

[0013] Furthermore, the outer surface of the material cart frame is provided with an insertion hole, the outer surface of the material cart track two is movably mounted with an extension frame, the outer surface of the extension frame is mounted with an insertion post, and the outer surface of the insertion post is in movable contact with the inner wall of the insertion hole.

[0014] Furthermore, a stepper motor is installed on the outer surface of the extension frame, and two limiting posts are installed inside the extension frame.

[0015] Furthermore, a ball screw is mounted on the outer surface of the output end of the second stepper motor. A screw slider seat is movably mounted on the outer surface of the ball screw and the outer surfaces of the two limiting posts. A slide rail three is mounted on the outer surface of the screw slider seat. The outer surface of the slide rail three is in movable contact with the outer surface of the slide rail picking carriage. Beneficial effects

[0016] The present invention has the following beneficial effects: 1. This mechanized loading device for freeze-dried pet food carts gradually reduces the current to the electromagnet plate, causing the magnetic force to disappear smoothly. The material tray slides smoothly and steadily into the tray slot under gravity or slight pushing force, avoiding impact and collision. The operator only needs to gently push the slide rail to pick up the material tray, which avoids the material tray shaking and prevents the material tray from falling off. It effectively avoids the material tray from instantaneous impact sliding, protecting the fragile freeze-dried food from breaking and producing crumbs due to shaking. 2. The mechanized loading device for freeze-dried pet food trolleys firmly fixes the material pallets in the center of the pallet slots from three directions. This ensures that when the trolley frame enters the freeze-drying chamber from trolley track two, the material pallets placed on the trolley frame will not shake during the overall movement of the trolley frame. The material pallets remain stable when entering and leaving the freeze-drying chamber, and also ensures that the contact area and heat transfer efficiency between each material pallet and the heating plate in the freeze-drying chamber are completely consistent, thereby producing products with uniform drying degree and stable quality. Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the freeze-drying chamber of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the overall structure of the extension frame of the present invention; Figure 5 This is a schematic diagram of the overall structure of the material handling vehicle frame of the present invention; Figure 6 This is a schematic diagram of the external structure of the slide rail material handling carriage of the present invention; Figure 7 This is a schematic diagram of the overall structure of the slide rail material handling carriage of the present invention; Figure 8 This is a schematic diagram of the external structure of the rotating column of the present invention. Figure 9 This is a schematic diagram of the overall structure of the material pallet of the present invention; Figure 10 This is a schematic diagram of the internal structure of the material tray of the present invention; Figure 11 This is a schematic diagram of the internal structure of the tray placement rack of the present invention.

[0018] In the diagram: 1. Freeze-drying chamber; 101. Material cart track 1; 102. Heating plate; 2. Material cart track two; 3. Material cart frame; 301. Slide rail one; 302. Slide rail material picking carriage; 303. Pallet placement rack; 304. Pallet groove; 305. Material pallet; 306. Insertion hole; 307. Movable groove; 308. Fixed column; 309. Connecting spring; 310. Movable column; 311. Extrusion block; 312. Inclined insertion surface; 4. Clamping and unloading assembly; 401. Electromagnetic plate; 402. Slide rail two; 403. Magnetic base plate; 404. Stepper motor one; 405. Worm gear; 406. Worm wheel; 407. Rotating column; 408. Cross handle; 409. Cross slot; 410. Rotary groove; 5. Extension frame; 501. Insertion post; 502. Stepper motor II; 503. Ball screw; 504. Limiting post; 505. Screw slider seat; 506. Slide rail III. Detailed Implementation

[0019] 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.

[0020] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0021] Please see Figures 1-11 This invention provides a technical solution: a mechanized loading device for freeze-dried pet food feed carts, comprising a freeze-drying chamber 1 and a feed cart track 2 installed on the outside of the freeze-drying chamber 1. Several heating plates 102 are evenly distributed inside the freeze-drying chamber 1. Feed cart track 101 is installed inside the freeze-drying chamber 1. A feed cart frame 3 is movably installed on the outer surface of feed cart track 2. An extension frame 5 is movably installed on the outer surface of feed cart track 2. Several slide rails 301 are evenly distributed on the outer surface of feed cart frame 3. A slide rail picking slide 302 is movably installed on the outer surface of slide rail 301. Several pallet placement racks 303 are movably installed on the outer surface of feed cart frame 3. Several material pallets 305 are evenly distributed and movably installed inside the several pallet placement racks 303. The sliding rail material handling carriage 302 is internally equipped with a clamping and unloading assembly 4. The clamping and unloading assembly 4 includes an electromagnet plate 401 and several sliding rails 402. The electromagnet plate 401 is mounted on the outer surface of the sliding rail material handling carriage 302, and the several sliding rails 402 are also mounted on the outer surface of the sliding rail material handling carriage 302. A magnetic base plate 403 is movably mounted on the outer surface of the several sliding rails 402. Several rotating columns 407 are evenly distributed and movably mounted inside the magnetic base plate 403. A cross handle 408 is mounted on the bottom surface of each of the rotating columns 407. Cross slots 409 and rotating grooves 410 are evenly distributed inside each of the several material trays 305. The clamping and unloading assembly 4 facilitates the smooth removal of the material trays 305 from the material cart frame 3, preventing breakage of the freeze-dried products inside the material trays 305. It also gradually weakens the current of the electromagnet plate 401, making the magnetic force even. The material tray 305 slides smoothly and steadily into the tray slot 304 under gravity or slight pushing force, avoiding impact and bumps. This allows the magnetic base plate 403 to slowly drive the material tray 305 into the tray slot 304. The stepper motor 404 continues to work, aligning the cross handle 408 with the cross slot 409. When the material tray 305 is inserted into the tray slot 304, the electromagnet plate 401 is energized, causing the magnetic base plate 403 to separate from the material tray 305. This facilitates the stable placement of the material tray 305 when it is placed at a height. The operator only needs to gently push the slide rail to pick up the material carriage 302, avoiding shaking of the material tray 305 and preventing it from falling off. This effectively prevents the material tray 305 from sliding due to instantaneous impact, protecting the fragile freeze-dried food from breaking and producing crumbs due to shaking.

[0022] A stepper motor 404 is mounted on the top surface of the magnetic base plate 403. A worm gear 405 is mounted on the outer surface of the output end of the stepper motor 404. A worm wheel 406 is mounted on the outer surface of several rotating columns 407. The outer surfaces of the worm wheels 406 mesh with the outer surfaces of the worm gear 405. The rotating columns 407 drive the cross handle 408 to rotate, causing the cross handle 408 to deflect at an angle within the rotating groove 410. This fixes the material tray 305 to the bottom of the magnetic base plate 403. The outer surface of the magnetic base plate 403 is made of rubber, while the interior is made of magnetic material. The electromagnet plate 401 is powered by a controller, thus giving the electromagnet plate 401 its magnetic properties. The magnetic surfaces of the corresponding surfaces of the electromagnet plate 401 and the magnetic base plate 403 have opposite magnetic properties, thus creating an attraction between them. This allows the magnetic base plate 403 to move along several slide rails 402. The worm gear 406 and worm 405 mechanism have a reverse self-locking characteristic, meaning that only the worm 405 can drive the worm gear 406, and the worm gear 406 cannot drive the worm 405 in the reverse direction. This means that once the cross handle 408 is rotated and locked, the material tray 305 will never loosen due to external force unless the stepper motor 404 actively reverses. The rubber magnetic base plate 403 also increases friction and acts as a buffer, ensuring that the tray remains motionless even during acceleration or deceleration.

[0023] Each of the pallet racks 303 has several pallet slots 304 inside. The inner wall of the pallet slot 304 is in contact with the outer surface of the material pallet 305. Each of the pallet racks 303 has several evenly distributed movable slots 307 inside. Each of the movable slots 307 has several evenly distributed fixed posts 308 on its inner wall. Each of the fixed posts 308 has a connecting spring 309 inside. Each of the connecting springs 309 has a movable post 310 on one end. The outer surface of each movable post 310 is in contact with the inner surface of the fixed post 308. Each of the movable posts 310 has a pressing block 311 on its outer surface. The pressing block 311 has an inclined insertion surface 312 inside. The outer surface of the pressing block 311 is in contact with the outer surface of the material pallet 305. Driving the pressing block 311 to quickly rebound outward along the movable slot 307 towards the material pallet 305 will cause the vertical and flat working surface of the pressing block 311 to be tightly pressed. The material tray 305 is firmly and securely attached to the three side walls of the material tray 305, fixing it firmly to the center of the tray groove 304 from three directions. This ensures that when the material cart frame 3 enters the material cart track 101 of the freeze-drying chamber 1 from the material cart track 2, the material trays 305 placed on the material cart frame 3 will not shake during the overall movement of the material cart frame 3. The material trays 305 remain stable when entering and leaving the freeze-drying chamber 1, and also ensure that the contact area and heat transfer efficiency between each material tray 305 and the heating plate 102 in the freeze-drying chamber are completely consistent, thus producing products with uniform drying degree and stable quality. The pre-tightening force of the connecting spring 309 completely eliminates the gap between the material tray 305 and the tray placement frame 303, effectively preventing the material tray 305 from sliding due to instantaneous impact, protecting the fragile freeze-dried food from damage, and preventing the pet food inside the material tray 305 from colliding and breaking due to shaking.

[0024] The outer surface of the material cart frame 3 has an insertion hole 306. An extension frame 5 is movably installed on the outer surface of the material cart track 2. An insertion post 501 is installed on the outer surface of the extension frame 5. The outer surface of the insertion post 501 is in contact with the inner wall of the insertion hole 306. The slide rail picking slide 302 moves onto the slide rail 3 506. The extension frame 5 separates from the material cart frame 3. Finally, the electromagnet plate 401 of the slide rail picking slide 302 and the stepper motor 404 and the stepper motor 502 of the extension frame 5 will not enter the freeze-drying chamber 1, thus completely eliminating all physical, chemical and biological pollution risks they bring, ensuring the purity of the environment inside the freeze-drying chamber 1 and guaranteeing the absolute safety of the pet freeze-dried food.

[0025] A stepper motor 502 is mounted on the outer surface of the extension frame 5. Two limiting posts 504 are installed inside the extension frame 5. A ball screw 503 is mounted on the outer surface of the output end of the stepper motor 502. A screw slider seat 505 is movably mounted on the outer surface of the ball screw 503 together with the outer surfaces of the two limiting posts 504. A slide rail 506 is mounted on the outer surface of the screw slider seat 505. The outer surface of the slide rail 506 is in contact with the outer surface of the slide rail picking slide 302. The stepper motor 502 drives the ball screw 503 to rotate, so that the screw slider seat 505, with the cooperation of the limiting posts 504 and the ball screw 503, moves the slide rail 505, the slide rail 506, and the slide rail picking slide 302 to the height of the pallet placement rack 303. The worker pushes the material pallet 305, so that it moves from the slide rail 306 to the slide rail 301.

[0026] The specific workflow of this invention is as follows: When freeze-drying pet food is required, the food is neatly arranged on the material tray 305. The arranged material tray 305 is first placed in the tray slot 304 of the tray placement rack 303 below the material cart frame 3. The material tray 305 first squeezes the extrusion blocks 311 on three end faces. Each extrusion block 311 is provided with an inclined insertion surface 312, which facilitates the material tray 305 to squeeze the extrusion blocks 311 outward, thereby causing the extrusion blocks 311 to move within the movable slot 307. The extrusion blocks 311 drive the movable column 310 to move within the fixed column 308. The connecting spring 309 is compressed, and the compressed connecting spring 309 is eager to return to its original state, thus generating a strong reverse force. This reverse force is transmitted to the pressing block 311 through the movable column 310, driving the pressing block 311 to quickly rebound outward along the movable groove 307, that is, towards the material tray 305. As a result, the vertical and flat working surface of the pressing block 311 will be tightly and firmly attached to the three side walls of the material tray 305, and the material tray 305 will be firmly fixed in the center position of the tray groove 304 from three directions.

[0027] This ensures that when the material cart frame 3 enters the material cart track 101 of the freeze-drying chamber 1 from the material cart track 2, the material trays 305 placed on the material cart frame 3 will not shake during the overall movement of the material cart frame 3. The material trays 305 remain stable when entering and leaving the freeze-drying chamber 1, and also ensures that the contact area and heat transfer efficiency between each material tray 305 and the heating plate 102 in the freeze-drying chamber are completely consistent, thereby producing products with uniform drying degree and stable quality. The pre-tightening force of the connecting spring 309 completely eliminates the gap between the material tray 305 and the tray placement rack 303, effectively preventing the material tray 305 from instantaneous impact sliding, protecting the fragile freeze-dried food from losing its shape, and preventing the pet food inside the material tray 305 from colliding with each other and breaking into crumbs due to shaking.

[0028] When it is necessary to place a material pallet 305 in the high pallet placement rack 303, insert the insert 501 of the extension frame 5 into the insertion hole 306 of the material cart frame 3, and insert the cross slot 409 of the material pallet 305 into the cross handle 408 of the magnetic base plate 403. The stepper motor 404 is controlled by the controller to work, and the stepper motor 404 drives the worm 405 to rotate. The outer surface of the worm 405 meshes with the outer surface of the worm wheel 406, so that the worm 405 drives the worm wheel 406 to rotate. The worm wheel 406 drives the rotating column 407 to rotate, and the rotating column 407 drives the cross handle 408 to rotate, so that the cross handle 408 deflects at an angle in the rotating groove 410, thereby fixing the material pallet 305 to the bottom of the magnetic base plate 403, and the outer side of the magnetic base plate 403 is... The material is made of rubber and has a magnetic interior. The electromagnet plate 401 is powered by a controller, which makes the electromagnet plate 401 magnetic. The corresponding surfaces of the electromagnet plate 401 and the magnetic base plate 403 have opposite magnetic properties, resulting in an attraction between them. This allows the magnetic base plate 403 to move along several slide rails 402. The worm gear 406 and worm 405 mechanism has a reverse self-locking characteristic, meaning that only the worm 405 can drive the worm gear 406, and the worm gear 406 cannot drive the worm 405 in the reverse direction. This means that once the cross handle 408 is rotated and locked, the material tray 305 will never loosen due to external force unless the stepper motor 404 actively reverses. The rubber magnetic base plate 403 also increases friction and acts as a buffer, ensuring that the tray remains motionless even during acceleration or deceleration.

[0029] Then, the stepper motor 502 is controlled by the controller to operate. The stepper motor 502 drives the ball screw 503 to rotate, so that the screw slider seat 505, under the cooperation of the limit post 504 and the ball screw 503, moves the screw slider seat 505 to the height of the slide rail 506 and the slide rail picking carriage 302 to the height of the pallet placement rack 303. The worker pushes the material pallet 305, so that it moves from the slide rail 506 to the slide rail 301. When it moves to the corresponding position, the current of the electromagnet plate 401 is slowly reduced, so that the magnetic force disappears smoothly. The material pallet 305 then moves smoothly under gravity or a slight pushing force. The material tray 305 slides smoothly and steadily into the tray slot 304, avoiding impact and bumps. This allows the magnetic base plate 403 to slowly drive the material tray 305 into the tray slot 304. The stepper motor 404 continues to work, aligning the cross handle 408 with the cross slot 409. When the material tray 305 is inserted into the tray slot 304, the electromagnet plate 401 is energized, causing the magnetic base plate 403 to separate from the material tray 305. This facilitates the stable placement of the material tray 305 when it is placed at a high position. The operator only needs to gently push the slide rail to pick up the material tray 302, avoiding shaking of the material tray 305 and preventing the material tray 305 from falling off.

[0030] When the material tray 305 is placed, the slide rail picking carriage 302 moves onto the slide rail 3 506, and the extension frame 5 separates from the material cart frame 3. Finally, the electromagnet plate 401 and stepper motor 1 404 of the slide rail picking carriage 302 and the stepper motor 2 502 of the extension frame 5 will not enter the freeze-drying chamber 1, thus completely eliminating all physical, chemical and biological pollution risks they bring, ensuring the purity of the environment inside the freeze-drying chamber 1, and guaranteeing the absolute safety of pet freeze-dried food.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mechanized loading device for freeze-dried pet food carts, comprising a freeze-drying chamber (1) and a cart track (2) installed outside the freeze-drying chamber (1), wherein a plurality of heating plates (102) are evenly distributed inside the freeze-drying chamber (1), characterized in that: The freeze-drying chamber (1) is equipped with a material cart track 1 (101) inside. A material cart frame (3) is movably installed on the outer surface of the material cart track 2 (2). An extension frame (5) is movably installed on the outer surface of the material cart track 2 (2). Several slide rails 1 (301) are evenly distributed and installed on the outer surface of the material cart frame (3). A slide rail picking slide (302) is movably installed on the outer surface of one of the slide rails 1 (301). Several pallet placement racks (303) are movably installed on the outer surface of the material cart frame (3). Several material pallets (305) are evenly distributed and movably installed inside each of the several pallet placement racks (303). The sliding rail picking carriage (302) is equipped with a clamping and unloading assembly (4). The clamping and unloading assembly (4) includes an electromagnet plate (401) and several sliding rails (402). The electromagnet plate (401) is installed on the outer surface of the sliding rail picking carriage (302). Several sliding rails (402) are installed on the outer surface of the sliding rail picking carriage (302). A magnetic base plate (403) is movably installed on the outer surface of the several sliding rails (402). The magnetic base plate (403) is internally... The material tray (305) is equipped with a number of rotating columns (407) that are evenly distributed and movable. Each of the rotating columns (407) has a cross handle (408) installed on its bottom surface. Each of the material trays (305) has a cross slot (409) evenly distributed inside. Each of the material trays (305) has a rotating groove (410) evenly distributed inside. The clamping and unloading assembly (4) facilitates the smooth removal of the material trays (305) above the material cart frame (3) to prevent the freeze-dried products in the material trays (305) from breaking.

2. The mechanized loading device for freeze-dried pet food carts according to claim 1, characterized in that: A stepper motor (404) is mounted on the top surface of the magnetic base plate (403). A worm gear (405) is mounted on the outer surface of the output end of the stepper motor (404). A worm wheel (406) is mounted on the outer surface of each of the rotating columns (407). The outer surface of the worm wheel (406) meshes with the outer surface of the worm gear (405).

3. The mechanized loading device for freeze-dried pet food carts according to claim 1, characterized in that: Each of the pallet racks (303) has a number of pallet slots (304) inside, and the inner wall of the pallet slot (304) is in contact with the outer surface of the material pallet (305).

4. The mechanized loading device for freeze-dried pet food carts according to claim 3, characterized in that: Each of the tray placement racks (303) has a number of movable slots (307) evenly distributed inside, and each of the movable slots (307) has a number of fixed posts (308) evenly distributed on its inner wall.

5. The mechanized loading device for freeze-dried pet food carts according to claim 4, characterized in that: Each of the fixed posts (308) is equipped with a connecting spring (309), and each of the connecting springs (309) has a movable post (310) installed on one end surface. The outer surfaces of the movable posts (310) are in contact with the inner surfaces of the fixed posts (308).

6. The mechanized loading device for freeze-dried pet food carts according to claim 5, characterized in that: A pressing block (311) is installed on the outer surface of several of the movable columns (310). The pressing block (311) has an inclined insertion surface (312) inside. The outer surface of the pressing block (311) is in active contact with the outer surface of the material tray (305).

7. The mechanized loading device for freeze-dried pet food carts according to claim 6, characterized in that: The outer surface of the material cart frame (3) is provided with a socket (306), the outer surface of the material cart track (2) is movably mounted with an extension frame (5), the outer surface of the extension frame (5) is mounted with a plug (501), and the outer surface of the plug (501) is in contact with the inner wall of the socket (306).

8. The mechanized loading device for freeze-dried pet food carts according to claim 7, characterized in that: The outer surface of the extension frame (5) is equipped with a stepper motor (502), and the inside of the extension frame (5) is equipped with two limiting posts (504).

9. The mechanized loading device for freeze-dried pet food carts according to claim 8, characterized in that: A ball screw (503) is mounted on the outer surface of the output end of the stepper motor (502). The outer surface of the ball screw (503) and the outer surfaces of the two limiting posts (504) are movably mounted on a screw slider seat (505). A slide rail (506) is mounted on the outer surface of the screw slider seat (505). The outer surface of the slide rail (506) is in contact with the outer surface of the slide rail picking slide (302).

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