A trolley loading tray feeding system

By optimizing the chassis structure and lifting mechanism, and combining guide components, positioning components, and trolley clamping components, the problems of inaccurate positioning and poor stability in the tray feeding system have been solved, achieving efficient and stable tray feeding, which is suitable for automated production lines.

CN224929917UActive Publication Date: 2026-11-03DONGGUAN HELIDE AUTOMATION EQUIP CO LTD
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Patent Information

Application Number
CN202522381448.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-10
Publication Date
2026-11-03
Estimated Expiration
2035-11-10

AI Technical Summary

Technical Problem

The existing material tray feeding system lacks an effective positioning and fixing mechanism, which makes the material trays prone to misalignment when the trolley enters the feeding station. The system is unstable during the lifting process, which affects the feeding accuracy and production safety. In addition, the system design is complex and difficult to maintain, and it cannot achieve rapid and continuous feeding.

Method used

The device employs a chassis structure, a feeding tray trolley, and a tray lifting mechanism. Through the combination of guide components, positioning components, trolley clamping components, and lateral positioning components, it achieves precise positioning and stable lifting of the feeding tray trolley, ensuring accurate positioning and stability of the tray during the conveying process.

Benefits of technology

It improves the level of automation, achieves high-precision, high-stability and high-efficiency tray feeding, reduces manual intervention, is suitable for continuous production lines, and significantly improves feeding efficiency and production safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to automatic feeding technology field especially, it is a kind of trolley feeding tray feeding system, including machine case, feeding tray cart and tray lifting mechanism, machine case is equipped with chamber, chamber middle part has vertical rod, vertical rod is divided into two feeding bins, the inner side wall of two feeding bins opposite with vertical rod is equipped with the guide piece that cooperates with feeding tray cart, tray lifting mechanism includes horizontal transfer positioning assembly, two feeding bins are equipped with the cart pressing assembly for fixing feeding tray cart and the positioning assembly located cart pressing assembly both sides, the utility model integrates feeding tray cart, tray lifting mechanism and cart pressing assembly, realizes the automatic conveying, positioning and lifting of tray, reduces manual intervention, is applicable to continuous production line, significantly improves feeding efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of automatic feeding technology, and in particular to a trolley feeding tray feeding system. Background Technology

[0002] In automated production lines of manufacturing, tray feeding systems are widely used in the conveying and loading of materials or workpieces. Current technologies primarily rely on manual operation or simple trolley transport, which has several shortcomings. For example, traditional systems often lack effective positioning and fixing mechanisms, causing trays to easily become misaligned when the trolley enters the feeding station, affecting loading accuracy; the docking of the trolley and lifting mechanism usually requires manual adjustment, increasing operation time and labor costs; furthermore, the trays have poor stability during lifting, easily wobbling or falling, affecting production safety and efficiency.

[0003] Some existing material feeding systems employ a single lifting device, but lack reliable positioning measures for the material tray before lifting, failing to ensure precise alignment between the tray and the lifting mechanism. Furthermore, the trolley often lacks a clamping and securing mechanism after feeding, potentially causing the trolley to move during lifting and resulting in tray misalignment. Other systems are complex in design, difficult to maintain, and unable to achieve rapid and continuous material feeding. Therefore, there is an urgent need for a highly automated, precisely positioned, and stable trolley-based material tray feeding system to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a trolley-mounted material tray feeding system, which achieves high precision, high stability and high efficiency material tray feeding by optimizing the chassis structure, trolley design and lifting mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a trolley-mounted material tray feeding system, characterized in that it includes: a chassis, a feeding tray trolley, and a material tray lifting mechanism. The chassis has a chamber for accommodating the feeding tray trolley. A longitudinal rod is provided in the middle of the chamber, dividing the chamber into two feeding bins. Guide members that cooperate with the feeding tray trolley are provided on both sides of the longitudinal rod and on the inner walls of the two feeding bins opposite to the longitudinal rod. The material tray lifting mechanism is located at the rear end inside the chamber. The material tray lifting mechanism includes a transverse positioning component that spans the two feeding bins and is used to fix the material tray. The transverse positioning component is driven by the material tray lifting mechanism to move down to the lower end of the material tray. The transverse positioning component moves laterally by a set distance, causing the transverse positioning component to be misaligned with the material tray. The transverse positioning component is lifted by the material tray lifting mechanism, and the transverse positioning component fixes the material tray and drives the material tray to rise and detach from the feeding bin. A trolley clamping component for fixing the feeding tray trolley is provided in the two feeding bins at the lower end of the transverse positioning component, and positioning components are located on both sides of the trolley clamping component.

[0006] As a further embodiment of this application, the top four corners of the feeding tray trolley are provided with limiting blocks corresponding to the material tray, and the limiting blocks are provided with first limiting holes; the lower two sides of the feeding tray trolley are provided with pulley sets that cooperate with the guide; the lower front side of the feeding tray trolley is provided with a limiting protrusion that cooperates with the positioning component, and the limiting protrusion is provided with a second limiting hole.

[0007] As a further embodiment of this application, the top four corners of the feeding tray trolley are provided with limiting blocks corresponding to the material tray, and the limiting blocks are provided with first limiting holes; the lower two sides of the feeding tray trolley are provided with pulley sets that cooperate with the guide; the lower front side of the feeding tray trolley is provided with a limiting protrusion that cooperates with the positioning component, and the limiting protrusion is provided with a second limiting hole.

[0008] As a further aspect of this application, the trolley clamping assembly includes a rotary clamping cylinder, the output end of which is provided with a swing arm that is driven to rotate by the rotary clamping cylinder, and the rear part of the swing arm is provided with an elastic pressure block that clamps the feeding tray trolley when the rotary clamping cylinder retracts; the feeding tray trolley is provided with a pad that cooperates with the elastic pressure block.

[0009] As a further embodiment of this application, the material tray lifting mechanism also includes a vertical screw threadedly connected to the transverse positioning component, vertical slide rails on both sides of the vertical screw, and a synchronous belt and motor drive mechanism for driving the vertical screw to rotate. The two ends of the vertical screw are rotatably located inside the cavity through bearing seats.

[0010] As a further embodiment of this application, the transverse positioning assembly includes a sliding plate that is slidably connected to a vertical slide rail and threadedly connected to a vertical screw; a horizontal slide rail assembly is provided at the front end of the sliding plate, and a lifting frame is slidably mounted on the horizontal slide rail assembly; a positioning hopper for accommodating a material tray is provided inside the lifting frame, and two L-shaped support plates are provided at intervals on the inner walls of the front and rear sides of the positioning hopper, the two L-shaped support plates on the front and rear sides are positioned correspondingly, and the upper end face of the two diagonally opposite L-shaped support plates is provided with a limiting shaft that matches the positioning hole on the material tray, and the upper end of the limiting shaft is provided with an insertion tip; a rack is provided on the back of the lifting frame, and a drive motor is provided on the back of the sliding plate, and the output shaft of the drive motor is keyed to a transmission gear that meshes with the rack for transmission.

[0011] As a further embodiment of this application, the sliding plate is provided with vertical plates at both ends, and the side wall of the vertical plate is provided with limiting posts that contact the lifting frame.

[0012] As a further embodiment of this application, the guide includes an L-shaped guide plate, with the end of the guide plate located at the inlet end of the feed hopper being inclined.

[0013] This trolley-mounted material tray feeding system has the following beneficial effects:

[0014] 1. Improve automation and efficiency: The system integrates a feeding tray trolley, a tray lifting mechanism, and a trolley clamping assembly, realizing automatic conveying, positioning, and lifting of the trays, reducing manual intervention, and is suitable for continuous production lines, significantly improving material feeding efficiency.

[0015] 2. Precise positioning and stability: The trolley clamping and positioning components ensure that the feeding tray trolley is fixed in the machine box, preventing the trolley from moving; the transverse positioning component uses a limit shaft to cooperate with the tray positioning hole, and combined with an L-shaped support plate to achieve precise alignment and stable lifting of the tray, preventing the tray from being misaligned or falling during the transfer process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the chassis structure in this utility model;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 This is a schematic diagram of the trolley clamping assembly in this utility model;

[0020] Figure 5 This is a schematic diagram of the feeding tray trolley in this utility model;

[0021] Figure 6 This is a schematic diagram of the material tray lifting mechanism in this utility model. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment provides a trolley-mounted material tray feeding system, which includes a chassis 10, a feeding tray trolley 20, and a material tray lifting mechanism 30.

[0024] The chassis 10 has a chamber for accommodating the feeding tray trolley 20. A longitudinal rod 101 is located in the middle of the chamber, dividing the chamber into two feeding bins. Guide members 102 that cooperate with the feeding tray trolley 20 are provided on both sides of the longitudinal rod 101 and on the inner side walls of the two feeding bins opposite to the longitudinal rod 101. A trolley clamping assembly 103 for fixing the feeding tray trolley 20 and positioning components 104 located on both sides of the trolley clamping assembly 103 are provided on the lower side of the two feeding bins. The feeding tray trolley 20 is guided and pushed into the feeding bin by the guide members 102 on both sides. After entering the bin and being positioned by cooperating with the positioning components 104, the feeding tray trolley 20 is clamped and fixed in the feeding bin by the trolley clamping assembly 103 to prevent the feeding tray trolley 20 from moving and to ensure the accurate positioning of the tray 100.

[0025] In other words, when the feeding tray trolley 20 enters the feeding tray trolley 20, in order to prevent the feeding tray trolley 20 from being misaligned and unable to accurately lift the tray 100 by the tray lifting mechanism 30, a guide member 102 is provided. The guide member 102 guides the feeding tray trolley 20 so that its position does not shift when it enters the feeding hopper, effectively ensuring that it is positioned in conjunction with the positioning component 104. In this embodiment, the guide member 102 includes an L-shaped guide plate. The end of the guide plate located at the inlet end of the feeding hopper is inclined. The lower ends of the feeding tray trolley 20 are provided with pulley sets 201 that cooperate with the guide plate. During the process of the feeding tray trolley 20 entering the feeding hopper, the pulley sets 201 slide smoothly along the inclined end of the guide plate. The L-shaped guide plate provides a clear guiding path for the feeding tray trolley 20, enabling the feeding tray trolley 20 to move accurately into the feeding hopper. Meanwhile, the inclined end design of the guide plate can also buffer the impact force when the feeding tray trolley 20 enters to a certain extent, further ensuring the stability of the feeding tray trolley 20 during the entry process. Under the guidance of the guide plate, the feeding tray trolley 20 smoothly reaches the position that cooperates with the positioning component 104, preparing for the subsequent precise lifting of the tray 100 by the tray lifting mechanism 30.

[0026] In addition, there are limiting blocks 202 corresponding to the material tray 100 at the four corners of the top of the feeding tray trolley 20. The limiting blocks 202 are provided with first limiting holes. The shape and size of the first limiting holes are adapted to specific parts of the edge of the material tray 100. When the material tray 100 is placed on the feeding tray trolley 20, the corresponding parts of the edge of the material tray 100 can be accurately embedded in the first limiting holes, thereby limiting the movement of the material tray 100 in the horizontal direction and preventing the material tray 100 from being horizontally displaced during the movement of the feeding tray trolley 20 or the lifting of the material tray 100.

[0027] In this embodiment, the positioning component 104 includes a mounting base 1041, which is provided with a plug-in rod 1042. The plug-in rod 1042 has a large end diameter, a small end diameter, and a tip, which are integrated into one piece. The small end diameter is located between the large end diameter and the tip, and the tip's diameter gradually decreases outward from the small end diameter. A limiting protrusion 203 is provided on the lower front end of the feeding tray trolley 20. The limiting protrusion 203 has a second part that cooperates with the plug-in rod 1042. The limiting hole 204 has a small end diameter equal to the diameter of the second limiting hole 204. The small end diameter and the tip are inserted into the second limiting hole 204. That is, when the feeding tray trolley 20 moves to the position corresponding to the positioning component 104, the tip of the insertion rod 1042 first inserts into the second limiting hole 204. Since the diameter of the tip gradually decreases from the small end diameter outward, this design allows the insertion rod 1042 to be guided into the second limiting hole 204 more smoothly. As the feeding tray trolley 20 continues to move, the small end diameter of the insertion rod 1042 is fully inserted into the second limiting hole 204. At this time, since the diameter of the small end diameter is equal to the diameter of the second limiting hole 204, a tight fit is formed between the insertion rod 1042 and the limiting protrusion 203. Furthermore, the two positioning components 104 effectively limit the movement of the feeding tray trolley 20 in both the vertical and horizontal directions. This positioning method is not only simple in structure, but also accurate and reliable in positioning. It can ensure that the feeding tray trolley 20 remains stable after reaching the designated position, providing a strong guarantee for the subsequent tray lifting mechanism 30 to accurately lift the tray 100.

[0028] To prevent the feeding tray trolley 20 from retracting or moving after positioning, the feeding tray trolley 20 is clamped by the trolley clamping assembly 103 to prevent movement. In this embodiment, the trolley clamping assembly 103 includes a rotary clamping cylinder 1031. The output end of the rotary clamping cylinder 1031 is provided with a swing arm 1032 that is driven to rotate by the rotary clamping cylinder 1031. The rear part of the swing arm 1032 is provided with an elastic pressure block 1033 that clamps the feeding tray trolley 20 when the rotary clamping cylinder 1031 retracts. The tray trolley 20 is equipped with a pad 205 that cooperates with the elastic pressure block 1033. When the feeding tray trolley 20 is accurately restricted to the designated position by the positioning component 104, the rotary clamping cylinder 1031 is activated, and its output end drives the swing arm 1032 to rotate, causing the elastic pressure block 1033 to rotate 90 degrees, so that the elastic pressure block 1033 is directly opposite the pad 205 on the feeding tray trolley 20. The rotary clamping cylinder 1031 retracts, and the elastic pressure block 1033 at the rear of the swing arm 1032 moves backward and gradually approaches the feeding tray trolley 20. When the rotary clamping cylinder 1031 retracts to a certain position, the elastic block 1033 contacts the pad 205 on the feeding tray trolley 20. Since the elastic block 1033 has a certain elasticity, a continuous and stable pressure is generated during the contact process, which tightly presses the feeding tray trolley 20, thereby effectively preventing the feeding tray trolley 20 from moving backward or moving after positioning. This further ensures the stability of the feeding tray trolley 20 in subsequent work and ensures that the tray lifting mechanism 30 can smoothly and accurately perform the tray 100 lifting operation.

[0029] After the feeding tray trolley 20 is positioned, the tray lifting mechanism 30 moves and fixes the tray 100, raising it to the discharge port of the feed hopper so that the subsequent material handling mechanism can remove the tray 100. Figure 6 As shown, the tray lifting mechanism 30 is located at the rear end of the chamber. The tray lifting mechanism 30 includes a transverse positioning assembly 301 spanning two feed bins and used to fix the tray 100, a vertical screw 302 threadedly connected to the transverse positioning assembly 301, vertical slide rails 303 on both sides of the vertical screw 302, and a synchronous belt and motor drive mechanism 304 for driving the vertical screw 302 to rotate. The two ends of the vertical screw 302 are rotatably mounted inside the chamber via bearing seats, and the vertical screw is driven by the synchronous belt and motor drive mechanism 304. The rod 302 rotates in the reverse direction, causing the vertical screw 302 to drive the horizontal positioning component 301 to move down along the vertical slide rail 303. After the horizontal positioning component 301 moves to the set position of the feeding tray trolley 20, the horizontal positioning component 301 moves horizontally a set distance, causing the horizontal positioning component 301 to be misaligned with the tray 100. Then, the vertical screw 302 is driven to rotate in the forward direction through the synchronous belt and motor drive mechanism 304, lifting the horizontal positioning component 301. The horizontal positioning component 301 fixes the tray 100 and drives the tray 100 to rise and leave the feeding hopper.

[0030] The transverse positioning assembly 301 is used to fix the material tray 100 and cooperate to lift the material tray 100. The transverse positioning assembly 301 includes a sliding plate 3011 that is slidably connected to the vertical slide rail 303 and threadedly connected to the vertical screw 302; the front end of the sliding plate 3011 is provided with a horizontal slide rail assembly 3012, and a lifting frame 3013 is slidably mounted on the horizontal slide rail assembly 3012; the lifting frame 3013 is provided with a positioning hopper for accommodating the material tray 100. The inner walls of the front and rear sides of the positioning hopper are provided with two L-shaped support plates 3014 spaced apart. The two L-shaped support plates 3014 on the front and rear sides are positioned opposite each other, and the upper end surfaces of the two diagonally opposite L-shaped support plates 3014 are provided with a surface that is aligned with the material tray 100. A limiting shaft 3015 that matches the positioning hole is provided with an insertion tip at the upper end of the limiting shaft 3015; a rack 3016 is provided on the back of the lifting frame 3013, and a drive motor 3017 is provided on the back of the sliding plate 3011. The output shaft of the drive motor 3017 is keyed to a transmission gear 3018 that meshes with the rack 3016; when the sliding plate 3011 moves up and down to a set position along the vertical slide rail 303, the L-shaped support plate 3014 is located at the lower end of the material tray 100, the drive motor 3017 is started, and through the meshing transmission of the transmission gear 3018 and the rack 3016, the lifting frame 3013 is driven to make precise horizontal movement on the horizontal slide rail assembly 3012. When the lifting frame 3013 moves to the set position, the L-shaped support plate 3014 is misaligned with the material tray 100, so that the limiting shafts 3015 on the two diagonally opposite L-shaped support plates 3014 coincide with the axis of the positioning hole on the material tray 100. At this time, driven by the vertical screw 302, the lifting frame 3013 rises, allowing the limiting shafts 3015 to be inserted into the positioning hole, thus achieving precise fixation of the material tray 100. Subsequently, driven by the vertical screw 302, the sliding plate 3011, together with the lifting frame 3013 and the fixed material tray 100, rises until the material tray 100 reaches the discharge port of the feed hopper, waiting for the subsequent material handling mechanism to remove the material tray 100.

[0031] In an optional embodiment, vertical plates 3019 are provided at both ends of the sliding plate 3011. The vertical plates 3019 are perpendicular to the sliding plate 3011. The side wall of the vertical plate 3019 is provided with limiting posts 3020 that contact the lifting frame 3013. The setting of the limiting posts 3020 can effectively control the movement range of the lifting frame 3013, prevent it from deviating or excessively displacing during horizontal movement, and ensure the movement accuracy of the lifting frame 3013 on the horizontal slide rail assembly 3012.

[0032] In summary, during operation, the feeding tray trolley 20 is guided into the feeding bin of the machine housing 10 chamber by the guide member 102. When the trolley reaches the predetermined position, the plug rod 1042 of the positioning component 104 is inserted into the second limiting hole 204 of the limiting protrusion 203 to achieve trolley positioning. At the same time, the rotary clamping cylinder 1031 of the trolley clamping component 103 rotates and retracts, pressing the trolley pad 205 with the elastic pressure block 1033 to fix the trolley. Subsequently, the synchronous belt and motor drive mechanism 304 of the tray lifting mechanism 30 drive the vertical screw 302 to rotate via the synchronous belt, driving the sliding plate 3011 to move down to a set position along the vertical slide rail 303. The drive motor 3017 of the transverse positioning component 301, in conjunction with the synchronous belt and motor drive mechanism 304, drives the lifting frame 3013 to move along the horizontal slide rail assembly 3012 via the transmission gear 3018 and rack 3016, so that the limiting shaft 3015 is inserted into the positioning hole of the tray 100, fixing the tray 100. Then, the synchronous belt and motor drive mechanism 304 of the tray lifting mechanism 30 drive the vertical screw 302 to rotate via the synchronous belt, driving the sliding plate 3011 to rise along the vertical slide rail 303, lifting the tray 100 away from the feeding hopper until it reaches the material picking station. Throughout the process, the dual-feed bin design allows for alternating feeding, improving efficiency; the guide component 102 and positioning component 104 ensure alignment accuracy, while the trolley clamping component 103 and lateral positioning component 301 ensure stability.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A trolley-mounted material tray feeding system, characterized in that, include: The system includes a chassis, a feeding tray trolley, and a tray lifting mechanism. The chassis has a chamber for accommodating the feeding tray trolley. A longitudinal rod in the middle of the chamber divides the chamber into two feeding bins. Guides that cooperate with the feeding tray trolley are provided on both sides of the longitudinal rod and on the inner walls of the two feeding bins opposite to the longitudinal rod. The tray lifting mechanism is located at the rear end inside the chamber. The tray lifting mechanism includes a transverse positioning component that spans the two feeding bins and is used to fix the tray. The tray lifting mechanism drives the transverse positioning component to move down to the lower end of the tray. The transverse positioning component moves laterally by a set distance, causing the transverse positioning component to be misaligned with the tray. The tray lifting mechanism lifts the transverse positioning component, which fixes the tray and drives the tray to rise and detach from the feeding bins. A trolley clamping component for fixing the feeding tray trolley is provided in the two feeding bins at the lower end of the transverse positioning component, and positioning components are located on both sides of the trolley clamping component.

2. The trolley-mounted material tray feeding system according to claim 1, characterized in that, The top four corners of the feeding tray trolley are equipped with limiting blocks corresponding to the feeding tray, and the limiting blocks are provided with first limiting holes; the lower two sides of the feeding tray trolley are equipped with pulley sets that cooperate with the guide components; the lower front side of the feeding tray trolley is equipped with a limiting protrusion that cooperates with the positioning component, and the limiting protrusion is provided with a second limiting hole.

3. The trolley-mounted material tray feeding system according to claim 2, characterized in that, The positioning component includes a mounting base, which is provided with a plug rod. The plug rod has a large end diameter, a small end diameter, and a tip. The large end diameter, small end diameter, and tip are integrated. The small end diameter is located between the large end diameter and the tip. The tip gradually decreases in diameter from the small end diameter outward. The diameter of the small end diameter is equal to the diameter of the second limiting hole. The small end diameter and the tip are inserted into the second limiting hole.

4. The trolley-mounted material tray feeding system according to claim 1, characterized in that, The trolley clamping assembly includes a rotary clamping cylinder. The output end of the rotary clamping cylinder is equipped with a swing arm that is driven to rotate by the rotary clamping cylinder. The rear part of the swing arm is equipped with an elastic pressure block that clamps the feeding tray trolley when the rotary clamping cylinder retracts. The feeding tray trolley is equipped with a pad that cooperates with the elastic pressure block.

5. The trolley-mounted material tray feeding system according to claim 1, characterized in that, The material tray lifting mechanism also includes a vertical screw threadedly connected to the transverse positioning component, vertical slide rails on both sides of the vertical screw, and a synchronous belt and motor drive mechanism for driving the vertical screw to rotate. The two ends of the vertical screw are rotatably located inside the cavity through bearing seats.

6. The trolley-mounted material tray feeding system according to claim 5, characterized in that, The transverse positioning assembly includes a sliding plate that is slidably connected to a vertical slide rail and threadedly connected to a vertical screw; a horizontal slide rail assembly is provided at the front end of the sliding plate, and a lifting frame is slidably mounted on the horizontal slide rail assembly; a positioning hopper for accommodating a material tray is provided inside the lifting frame, and two L-shaped support plates are provided at intervals on the inner walls of the front and rear sides of the positioning hopper, with the two L-shaped support plates on the front and rear sides corresponding to each other, and the upper end face of the two diagonally opposite L-shaped support plates is provided with a limiting shaft that matches the positioning hole on the material tray, and the upper end of the limiting shaft is provided with an insertion tip; a rack is provided on the back of the lifting frame, and a drive motor is provided on the back of the sliding plate, with the output shaft of the drive motor keyed to a transmission gear that meshes with the rack for transmission.

7. The trolley-mounted material tray feeding system according to claim 6, characterized in that, The sliding plate has vertical plates at both ends, and the side walls of the vertical plates have limiting posts that contact the lifting frame.

8. The trolley-mounted material tray feeding system according to claim 1, characterized in that, The guide includes an L-shaped guide plate, with the end of the guide plate located at the inlet of the feed hopper being inclined.