Lychee sorting and positioning mechanism

CN224712526UActive Publication Date: 2026-09-04HAINAN JINGQIAN FRUIT IND CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202521861981.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-30
Publication Date
2026-09-04
Estimated Expiration
2035-08-30

AI Technical Summary

Technical Problem

[0004]为了弥补以上不足,本实用新型提供了一种荔枝分拣定位机构,旨在改善现有技术中存在缺乏有效的缓冲力产生机制,当采用气动或机械接触方式分拣时,难以调整作用力,导致分拣过程中冲击力过大,造成果皮破裂,降低荔枝分拣的精准性与果实完好率的问题

Benefits of technology

[0022] 1. In this utility model, two mounting rods are driven to move relative to each other in the horizontal direction by the sliding rod and the telescopic rod five, realizing dual-mechanism gripping. Combined with the adjustment function of multiple sets of telescopic rod one at the bottom of the mounting rod, the gripping position is adjusted. The telescopic rod two in the slide sleeve realizes the downward thrust gripping and forms a flexible buffer with the spring rheostat. The impact force is dynamically absorbed through elastic deformation to avoid rigid collision. The positioning cover adapts to the contour of the fruit to ensure effective gripping and improve the accuracy of lychee sorting and the fruit integrity rate.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224712526U_ABST
    Figure CN224712526U_ABST
Patent Text Reader

Abstract

The utility model relates to litchi sorting technical field discloses a litchi sorting positioning mechanism, including processing cover, the inside of processing cover is provided with sorting mechanism, the sorting mechanism is used for sorting litchi, the bottom of processing cover is provided with conveying positioning mechanism, the conveying positioning mechanism is used for conveying positioning to litchi, the sorting mechanism includes the chute lever, the left and right sides of chute lever are all fixedly connected in the inside top left and right end of processing cover, the inside of chute lever is slidably connected with two mounting rods, the inside front and back of chute lever are all fixedly connected with telescopic link five. In the utility model, through the relative movement of two mounting rods along the horizontal direction driven by the chute lever and telescopic link five, and with the flexible buffer of spring rheostat, through the impact force of elastic deformation absorption, avoid rigid collision, and the positioning cover adapts the fruit outline, ensures can effectively snatch, promotes the accuracy of litchi sorting and the fruit intact rate.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of lychee sorting technology, and in particular to a lychee sorting and positioning mechanism. Background Technology

[0002] The lychee sorting and positioning mechanism is part of the automated lychee sorting system. It uses sensors and vision system equipment to accurately detect and position lychees during transport. The working principle is to collect data on the size, weight, and appearance defects of the lychees. After analysis by the control system, the lychees are sorted according to preset standards, accurately diverting them to different channels. The mechanism can increase sorting efficiency, has small positioning errors, and is applied in fruit processing plant scenarios to meet the needs of high-quality fresh fruit grading.

[0003] Traditional lychee sorting and positioning mechanisms lack an effective buffering force generation mechanism in practical applications. When using pneumatic or mechanical contact methods for sorting, it is difficult to dynamically adjust the force according to the size and hardness of the lychee fruit, resulting in excessive impact force during sorting. At the same time, the sorting execution mechanism is mostly a rigid structure, which cannot adapt to the contour of the fruit when gripping, and lacks force feedback control. This leads to uneven or excessive gripping force causing the peel to break, resulting in a high sorting damage rate and reducing the accuracy of lychee sorting and the fruit integrity rate. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a lychee sorting and positioning mechanism, which aims to improve the existing technology that lacks an effective buffer force generation mechanism. When pneumatic or mechanical contact methods are used for sorting, it is difficult to adjust the force, resulting in excessive impact force during sorting, causing fruit peel to break, and reducing the accuracy of lychee sorting and the fruit integrity rate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lychee sorting and positioning mechanism, including a processing cover, a sorting mechanism is provided inside the processing cover for sorting lychees, and a conveying and positioning mechanism is provided at the bottom of the processing cover for conveying and positioning lychees.

[0006] The sorting mechanism includes a chute rod, with its left and right sides fixedly connected to the top left and right ends of the inner side of the processing cover. Two mounting rods are slidably connected to the inner side of the chute rod. Telescopic rods (five) are fixedly connected to the front and rear sides of the inner side of the chute rod. The output ends of the two telescopic rods (five) are respectively fixedly connected to the opposite sides of the two mounting rods. Telescopic rods (one) are fixedly connected to the bottom left and right sides of the two mounting rods. Slide rail sleeves are fixedly connected to the output ends of the two front and rear telescopic rods (one). Telescopic rods (two) are fixedly connected to the top inner side of the two slide rail sleeves. Spring rheostats are fixedly connected to the output ends of the two telescopic rods (two). Slide rail columns are fixedly connected to the bottom of the two spring rheostats. Positioning covers are fixedly connected to the bottom of the two slide rail columns. Clamping assemblies are provided inside the two positioning covers.

[0007] As a further description of the above technical solution:

[0008] The conveying and positioning mechanism includes a conveying frame, with multiple rollers rotatably connected to the top inner side of the conveying frame. A mounting plate is fixedly connected to the bottom left side of the processing cover. Data collectors are fixedly connected to the bottom left and right sides of the mounting plate. An inclined plate is fixedly connected to the front left end of the conveying frame. A weight detection plate is fixedly connected to the top right front end of the conveying frame. A picking component is provided at the top right rear end of the conveying frame. A transmission component is provided at the right middle and front right end of the conveying frame. A control component is provided at the front left end of the conveying frame. A lighting component is provided at the bottom of the mounting plate. A pushing component is provided at the bottom rear inside the processing cover and at the top right front end of the lighting component.

[0009] As a further description of the above technical solution:

[0010] The sorting component includes a baffle, the bottom of which is located at the top right rear end of the conveyor frame. The top right rear end of the conveyor frame has a fruit outlet, and a collection box is located at the front of the fruit outlet.

[0011] As a further description of the above technical solution:

[0012] The transmission assembly includes two support plates. The left side of the right support plate and the front side of the front support plate are respectively located in the middle right side and the right front end of the conveyor frame. A motor is fixedly connected to the top of both support plates.

[0013] As a further description of the above technical solution:

[0014] The control assembly includes two controllers, the rear sides of which are fixedly connected to the front left end of the conveyor frame, and an emergency switch is fixedly connected to the front side of each of the two controllers.

[0015] As a further description of the above technical solution:

[0016] The lighting assembly includes a battery strip, the top of which is fixedly connected to the bottom of a mounting plate, and a contour light is fixedly connected to the bottom of the battery strip.

[0017] As a further description of the above technical solution:

[0018] The pushing assembly includes two telescopic rods. The rear side of the rear telescopic rod and the right side of the front telescopic rod are fixedly connected to the bottom rear side of the processing cover and the front right side of the top of the conveying frame, respectively. The output ends of the two telescopic rods are fixedly connected to push plates.

[0019] As a further description of the above technical solution:

[0020] The clamping assembly includes two telescopic rods, which are fixedly connected to the left and right sides of the positioning cover on opposite sides. The output ends of the two telescopic rods are fixedly connected to clamping plates, and multiple sponge pads are fixedly connected to adjacent sides of the two clamping plates.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, two mounting rods are driven to move relative to each other in the horizontal direction by the sliding rod and the telescopic rod five, realizing dual-mechanism gripping. Combined with the adjustment function of multiple sets of telescopic rod one at the bottom of the mounting rod, the gripping position is adjusted. The telescopic rod two in the slide sleeve realizes the downward thrust gripping and forms a flexible buffer with the spring rheostat. The impact force is dynamically absorbed through elastic deformation to avoid rigid collision. The positioning cover adapts to the contour of the fruit to ensure effective gripping and improve the accuracy of lychee sorting and the fruit integrity rate.

[0023] 2. In this utility model, the rollers inside the conveyor frame allow the lychees to roll freely during the conveying process, guiding the fruits into the detection area in different postures to ensure the comprehensiveness of data collection. The data acquisition device at the bottom of the mounting plate captures the size and appearance parameters of the lychees in real time, providing basic data for sorting standards. The weight detection plate measures the weight of the lychees in real time after sorting, effectively improving sorting accuracy and reliability, and providing full-process data support for automated lychee grading. Attached Figure Description

[0024] Figure 1 This is a perspective view of a lychee sorting and positioning mechanism proposed in this utility model;

[0025] Figure 2 This is a front view of a lychee sorting and positioning mechanism proposed in this utility model;

[0026] Figure 3 This is a split view of the sorting mechanism in a lychee sorting and positioning mechanism proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the conveying and positioning mechanism in a lychee sorting and positioning mechanism proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the picking component in a lychee sorting and positioning mechanism proposed in this utility model.

[0029] Legend:

[0030] 1. Processing cover; 2. Sorting mechanism; 201. Slide rail; 202. Mounting rod; 203. Telescopic rod one; 204. Slide rail sleeve; 205. Telescopic rod two; 206. Slide rail column; 207. Positioning cover; 208. Clamping assembly; 2081. Telescopic rod three; 2082. Clamping plate; 2083. Sponge pad; 209. Spring rheostat; 210. Telescopic rod five; 3. Conveying and positioning mechanism; 301. Conveying frame; 302. Roller; 303. Mounting plate; 304. Data acquisition unit; 305, inclined plate; 306, weight detection plate; 307, picking assembly; 3071, baffle; 3072, fruit outlet; 3073, collection box; 308, transmission assembly; 3081, support plate; 3082, motor; 309, control assembly; 3091, controller; 3092, emergency switch; 310, lighting assembly; 3101, battery bar; 3102, outline light; 311, push assembly; 3111, telescopic rod four; 3112, push plate. Detailed Implementation

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

[0032] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model is provided: a lychee sorting and positioning mechanism, including a processing cover 1, a sorting mechanism 2 is provided inside the processing cover 1, the sorting mechanism 2 is used to sort lychees, and a conveying and positioning mechanism 3 is provided at the bottom of the processing cover 1, the conveying and positioning mechanism 3 is used to convey and position lychees.

[0033] The sorting mechanism 2 includes a chute rod 201. The left and right sides of the chute rod 201 are fixedly connected to the top left and right ends of the inner side of the processing cover 1. Two mounting rods 202 are slidably connected to the inner side of the chute rod 201. Telescopic rods 210 are fixedly connected to the front and rear sides of the chute rod 201. The output ends of the two telescopic rods 210 are respectively fixedly connected to the opposite sides of the two mounting rods 202. The chute rod 201 and the telescopic rods 210 drive the two mounting rods 202 to move horizontally relative to each other, adjusting the longitudinal gripping position to achieve dual-mechanism gripping. Telescopic rods 203 are fixedly connected to the bottom left and right sides of the two mounting rods 202. The adjustment function of multiple sets of telescopic rods 203 at the bottom of the mounting rods 202 allows for lateral adjustment of the gripping position. The output ends of the two front telescopic rods 203 and the two rear telescopic rods 203 are all fixedly connected to slide rail sleeves 204. The top inner side of the two slide rail sleeves 204 is fixedly connected to telescopic rods 205. The output ends of the two telescopic rods 205 are fixedly connected to spring rheostats 209. The bottom of the two spring rheostats 209 is fixedly connected to slide rail columns 206. The telescopic rods 205 inside the slide rail sleeves 204 realize downward pushing force gripping and form a flexible buffer with the spring rheostats 209. The bottom of the two slide rail columns 206 is fixedly connected to positioning covers 207. The positioning covers 207 are adapted to the contour of the fruit to ensure effective gripping. The inside of the two positioning covers 207 is provided with clamping components 208.

[0034] Specifically, in the sorting mechanism 2, the chute rods 201 on the left and right sides are fixed to the top of the inner side of the processing cover 1. The telescopic rods 210 on the front and rear sides drive the two mounting rods 202 to move relative to each other in the horizontal direction, flexibly adjusting the longitudinal gripping position to achieve synchronous operation of the two mechanisms and efficiently cover lychee targets with different spacing. The telescopic rods 203 on the left and right sides at the bottom of the mounting rods 202 can be adjusted laterally. When the lychee shifts position during the conveying process, the four sets of telescopic rods 203 can be adjusted independently to ensure that the positioning cover 207 is accurately aligned with the fruit. The output ends of the front and rear telescopic rods 203 are respectively connected to the slide rail sleeves 204, and the internal telescopic rods 202... 5 is responsible for providing downward thrust to push the positioning cover 207 closer to the lychee. During this process, the telescopic rod 205 and the spring rheostat 209 form a flexible buffer structure. When the positioning cover 207 contacts the lychee, the spring rheostat 209 is compressed and deformed, converting the impact force into elastic potential energy, thus avoiding rigid collision damage to the fruit. At the same time, the spring rheostat 209 provides feedback on the force, and the control system dynamically adjusts the thrust of the telescopic rod 205 accordingly. The positioning cover 207 adopts a flexible design that conforms to the contour of the lychee, ensuring stable and gentle gripping, realizing adaptive gripping of lychees of different postures and sizes, effectively improving sorting efficiency and fruit integrity rate, and providing a reliable guarantee for automated lychee sorting.

[0035] Reference Figure 1 , Figure 4 and Figure 5 The conveying and positioning mechanism 3 includes a conveying frame 301. Multiple rollers 302 are rotatably connected to the inner top of the conveying frame 301. These rollers allow the lychees to roll freely during conveying, guiding the fruit into the inspection area in different postures. A mounting plate 303 is fixedly connected to the bottom left side of the processing cover 1. Data collectors 304 are fixedly connected to the bottom left and right sides of the mounting plate 303, capturing the size and appearance parameters of the lychees in real time to provide basic data for sorting standards. A ramp 305 is fixedly connected to the front left end of the conveying frame 301. A weight detection plate 306 is fixedly connected to the front end of the top right side of the conveyor frame 301. The weight detection plate 306 measures the weight of the lychees in real time after sorting. A picking component 307 is provided at the rear end of the top right side of the conveyor frame 301. A transmission component 308 is provided at the middle right side and the front right end of the conveyor frame 301. A control component 309 is provided at the front left end of the conveyor frame 301. A lighting component 310 is provided at the bottom of the mounting plate 303. A pushing component 311 is provided at the bottom rear side of the inside of the processing cover 1 and at the front end of the top right side of the lighting component 310.

[0036] Specifically, multiple rollers 302 rotatably connected to the top of the conveying frame 301 in the conveying and positioning mechanism 3 allow the lychees to roll freely during the conveying process. This dynamic conveying method breaks the limitation of the fruit's fixed posture, ensuring that the lychees enter the detection area in different postures. This allows the data collector 304 to comprehensively capture information from all angles of the fruit. The data collectors 304 on the left and right sides of the bottom of the mounting plate 303 quickly scan the size, skin color, and appearance parameters of the lychees, transmitting the data to the control system in real time to provide basic data for subsequent sorting. The inclined plate 305 on the left front end of the conveying frame 301 guides the lychees to slide smoothly into the finished product frame after sorting, thanks to its tilt angle and smooth surface, avoiding collision damage caused by falling. The weight detection plate 306 on the top right front end measures the weight of the lychees in real time after sorting, combining it with the appearance data collected earlier to form a multi-dimensional verification mechanism, effectively ensuring the accuracy and reliability of sorting and improving the closed-loop management of the entire lychee sorting process.

[0037] Reference Figure 1 , Figure 2 and Figure 5The sorting component 307 includes a baffle 3071. The bottom of the baffle 3071 is located at the top right rear end of the conveyor frame 301. The top right rear end of the conveyor frame 301 has a fruit outlet 3072. A collection box 3073 is located at the front of the fruit outlet 3072 for collecting unqualified fruits. The transmission component 308 includes two support plates 3081. The left side of the right support plate 3081 and the front side of the front support plate 3081 are respectively located at the middle right side and the right front end of the conveyor frame 301. A motor 3082 is fixedly connected to the top of both support plates 3081 to provide power to the conveying equipment. The control component 309 includes two controllers 3091. The rear side of both controllers 3091 is fixedly connected to the left front end of the conveyor frame 301. An emergency switch 3092 is fixedly connected to the front side of both controllers 3091 for controlling the switching of the equipment.

[0038] Specifically, the baffle 3071 in the sorting component 307 is located at the rear end of the top right side of the conveyor frame 301. The baffle 3071 prevents qualified and unqualified fruits from mixing. When the detection system determines that the lychee is unqualified, the upper sorting mechanism 2 picks up the unqualified product and causes it to slide from the fruit outlet 3072 to the collection box 3073 below, achieving rapid separation and centralized collection of unqualified fruits and preventing them from being mixed with qualified products. The two bearing plates 3081 of the transmission component 308 are respectively fixed to the middle right side and the front right end of the conveyor frame 301, and the upper part is installed with The motor 3082 provides power to the roller 302 and the conveying equipment. By precisely controlling the speed and torque, it ensures that the lychees are conveyed at a stable speed and spacing, laying the foundation for subsequent inspection and sorting. The two controllers 3091 in the control component 309 are deployed at the front left end of the conveyor frame 301. They are responsible for receiving signals from devices such as the data acquisition device 304 and the weight detection board 306, and coordinating the operation of each component. The emergency switch 3092 set at the front end will immediately cut off the power supply in case of sudden equipment failure or safety hazards, ensuring the safety of equipment and personnel.

[0039] Reference Figure 1 , Figure 3 and Figure 4The lighting assembly 310 includes a battery strip 3101, the top of which is fixedly connected to the bottom of the mounting plate 303. A contour light 3102 is fixedly connected to the bottom of the battery strip 3101, enabling the data acquisition device 304 to collect data more effectively and accurately. The pushing assembly 311 includes two telescopic rods 3111. The rear side of the rear telescopic rod 3111 and the right side of the front telescopic rod 3111 are respectively fixedly connected to the bottom rear side of the inside of the processing cover 1 and the front right side of the top of the conveyor frame 301. The two telescopic rods 3111... Each output end is fixedly connected to a push plate 3112, which is used to push the sorted lychees to the subsequent conveying process to prevent individual lychees from staying during conveying. The clamping assembly 208 includes two telescopic rods 2081. The two telescopic rods 2081 are fixedly connected to the left and right sides of the positioning cover 207 on opposite sides. Each output end of the two telescopic rods 2081 is fixedly connected to a clamping plate 2082. Multiple sponge pads 2083 are fixedly connected to adjacent sides of the two clamping plates 2082 to effectively clamp and provide cushioning force during lychee sorting.

[0040] Specifically, the battery strip 3101 of the lighting component 310 is fixed to the bottom of the mounting plate 303 to power the contour light 3102. The emitted uniform ring-shaped light field eliminates shadows on the surface of the lychee, enhances the data acquisition device 304's ability to recognize the fruit's outline and color, and significantly improves clarity in low-light environments, ensuring the accuracy of size measurement and defect detection. The two telescopic rods 3111 of the push component 311 are respectively deployed at the bottom rear side of the processing cover 1 and the front right side of the top of the conveyor frame 301. The push plate 3112 at the output end can quickly extend according to the control system command after the lychee sorting is completed, pushing the lychees that remain on the conveyor path. The branches are pushed into the subsequent conveying process, effectively solving the problem of fruit retention caused by electrostatic adsorption or roller jamming 302, ensuring the continuity of the sorting process. The design of the clamping component 208 improves the gripping safety. Two telescopic rods 2081 drive the clamping plate 2082 to move in opposite directions, realizing flexible clamping of lychees. The sponge pad 2083 on the inner side of the clamping plate 2082 has good elasticity and cushioning performance, automatically dispersing pressure when in contact with the fruit, avoiding excessive local force, while increasing friction to prevent the fruit from slipping. Combined with the adaptive contour design of the positioning cover 207, a triple protection mechanism is formed to minimize the fruit damage rate.

[0041] Working principle: First, lychees are conveyed by rollers 302 at the top of the conveyor frame 301. The rotation of rollers 302 causes the fruit to roll freely and enter the detection area in different postures. Under the auxiliary lighting of contour lights 3102 in the lighting assembly 310, the data acquisition device 304 at the bottom of the mounting plate 303 quickly captures the size, color, and appearance parameters of the lychees and transmits the data to the controller 3091 in the control assembly 309. At the same time, the weight detection plate 306 at the front right side of the top of the conveyor frame 301 measures the weight of the lychees after sorting. This weight, together with the appearance data, constitutes the sorting basis. When the lychees enter the processing hood 1... In the sorting area, sorting mechanism 2 starts operation. The telescopic rod 210 inside the chute rod 201 drives the two mounting rods 202 to move relative to each other in the horizontal direction, adjusting the longitudinal gripping position to achieve synchronous gripping by both mechanisms. The telescopic rod 203 at the bottom of the mounting rod 202 independently adjusts the horizontal angle of the positioning cover 207 according to the lateral position offset of the lychee. The telescopic rod 205 inside the slide sleeve 204 pushes the positioning cover 207 downward to grip the lychee. During this process, the spring rheostat 209 senses the contact force in real time and feeds it back to the control system. By adjusting the thrust of the telescopic rod 205, a flexible buffer is formed to avoid damage. Driven by the telescopic rod 2081, the clamping assembly 208 inside the positioning cover 207 uses the clamping plate 2082 and sponge pad 2083 to flexibly grip the lychees from both sides, ensuring a stable and gentle grip. Lychees deemed qualified by the sorting mechanism 2 are placed back into the conveyor frame 301 for continued transport, eventually sliding down the inclined plate 305 to the finished product collection frame. Unqualified lychees, under the operation of the sorting mechanism 2, are sent to the picking assembly 307 at the rear right side of the top of the conveyor frame 301. The baffle 3071 ensures that qualified and unqualified products are effectively separated, allowing unqualified fruits to fall into the collection frame from the fruit outlet 3072. To ensure smooth transport, the telescopic rod 3111 of the push assembly 311 pushes the remaining fruit to the subsequent process via the push plate 3112 after the lychee sorting is completed, avoiding blockages caused by electrostatic adsorption or equipment jamming. Throughout the process, the motor 3082 of the transmission assembly 308 provides power to the roller 302 and the conveying equipment, ensuring that the lychees are transported at a stable speed. The controller 3091 of the control assembly 309 coordinates the operation of each component, and the emergency switch 3092 immediately cuts off the power in case of equipment malfunction, ensuring the safety of equipment and personnel. Ultimately, this achieves efficient, accurate and low-damage automated sorting of lychees.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lychee sorting and positioning mechanism, comprising a processing cover (1), characterized in that: The processing cover (1) is equipped with a sorting mechanism (2) inside, which is used to sort lychees. The bottom of the processing cover (1) is equipped with a conveying and positioning mechanism (3), which is used to convey and position lychees. The sorting mechanism (2) includes a chute rod (201). The left and right sides of the chute rod (201) are fixedly connected to the top left and right ends of the inner side of the processing cover (1). Two mounting rods (202) are slidably connected to the inner side of the chute rod (201). Telescopic rods (210) are fixedly connected to the front and rear sides of the chute rod (201). The output ends of the two telescopic rods (210) are respectively fixedly connected to the opposite sides of the two mounting rods (202). Telescopic rods (203) are fixedly connected to the bottom left and right sides of the two mounting rods (202). The two telescopic rods (203) on the front side are... The output end of the first telescopic rod (203) and the output ends of the two telescopic rods (203) on the rear side are all fixedly connected to slide rail sleeves (204). The top inner side of the two slide rail sleeves (204) is fixedly connected to the second telescopic rod (205). The output ends of the two telescopic rods (205) are all fixedly connected to spring rheostats (209). The bottom of the two spring rheostats (209) is fixedly connected to slide rail columns (206). The bottom of the two slide rail columns (206) is fixedly connected to positioning covers (207). The inside of the two positioning covers (207) is provided with clamping components (208).

2. The lychee sorting and positioning mechanism according to claim 1, characterized in that: The conveying and positioning mechanism (3) includes a conveying frame (301). Multiple rollers (302) are rotatably connected to the inner top of the conveying frame (301). A mounting plate (303) is fixedly connected to the bottom left side of the processing cover (1). Data collectors (304) are fixedly connected to the bottom left and right sides of the mounting plate (303). A ramp (305) is fixedly connected to the left front end of the conveying frame (301). A weight detection plate is fixedly connected to the front right side of the top of the conveying frame (301). (306) A picking component (307) is provided at the rear end of the top right side of the conveying frame (301). A transmission component (308) is provided at the middle right side and the right front side of the conveying frame (301). A control component (309) is provided at the left front side of the conveying frame (301). A lighting component (310) is provided at the bottom of the mounting plate (303). A pushing component (311) is provided at the bottom rear side of the processing cover (1) and at the front end of the top right side of the lighting component (310).

3. The lychee sorting and positioning mechanism according to claim 2, characterized in that: The picking component (307) includes a baffle (3071), the bottom of which is located at the top right rear end of the conveying frame (301). The top right rear end of the conveying frame (301) has a fruit outlet (3072), and a collection box (3073) is provided on the front side of the fruit outlet (3072).

4. The lychee sorting and positioning mechanism according to claim 2, characterized in that: The transmission assembly (308) includes two support plates (3081). The left side of the right support plate (3081) and the front side of the front support plate (3081) are respectively located in the middle right side and the right front side of the conveyor frame (301). A motor (3082) is fixedly connected to the top of each of the two support plates (3081).

5. The lychee sorting and positioning mechanism according to claim 2, characterized in that: The control component (309) includes two controllers (3091), the rear sides of which are fixedly connected to the front left end of the conveyor frame (301), and an emergency switch (3092) is fixedly connected to the front side of each of the two controllers (3091).

6. The lychee sorting and positioning mechanism according to claim 2, characterized in that: The lighting assembly (310) includes a battery strip (3101), the top of which is fixedly connected to the bottom of the mounting plate (303), and a contour light (3102) is fixedly connected to the bottom of the battery strip (3101).

7. The lychee sorting and positioning mechanism according to claim 2, characterized in that: The pushing assembly (311) includes two telescopic rods (3111). The rear side of the rear telescopic rod (3111) and the right side of the front telescopic rod (3111) are respectively fixedly connected to the bottom rear side of the processing cover (1) and the top right front end of the conveying frame (301). The output ends of the two telescopic rods (3111) are fixedly connected to push plates (3112).

8. The lychee sorting and positioning mechanism according to claim 1, characterized in that: The clamping assembly (208) includes two telescopic rods (2081). The two telescopic rods (2081) are fixedly connected to the left and right sides inside the positioning cover (207) on opposite sides. The output ends of the two telescopic rods (2081) are fixedly connected to clamping plates (2082). Multiple sponge pads (2083) are fixedly connected to adjacent sides of the two clamping plates (2082).