Fruit lossless sorting and counterweight production line

Abstract

The utility model belongs to the technical field of fruit packaging production, and particularly relates to a fruit lossless sorting counterweight production line which comprises a feeding conveyor, fruit supports are placed on the feeding conveyor, a Z-shaped feeding hoister is arranged on one side of the feeding conveyor, a rotary weighing machine is arranged on one side of the feeding hoister, and the rotary weighing machine is arranged on the other side of the feeding hoister. A first turning conveyor designed in an L shape is arranged on the rear side of the rotary weighing machine, an over-and-under rejecting machine is arranged on the first turning conveyor close to the rotary weighing machine, and a combination machine with the front side and the rear side having the sorting and combining functions is arranged at the output end of the turning conveyor. A first gathering conveyor is arranged at the end of the second turning conveyor and the end of the third turning conveyor. The fruit sorting and combining machine is reasonable in design, simple in structure and convenient to process, integrates the functions of weighing, sorting and combining, reduces the possibility of fruit damage and the complexity of processing work, improves the working progress, and meets the use requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of fruit packaging production, in particular to a fruit lossless sorting and weighing production line. Background Art

[0002] Fruit quality is a crucial aspect of transportation that requires special attention. During transportation, fruit is easily affected by factors such as humidity, temperature, and ventilation, leading to rot and spoilage. The current method of shipping fruit in boxes not only prevents damage during transportation and saves costs, but also allows for storage, ensuring freshness and quality for subsequent sales.

[0003] At present, for large fruits such as whole durian and watermelon, as well as irregularly shaped fruits such as green mango, jackfruit, and dragon fruit, there is a demand in the existing market to sort them into different sizes, and there is also a demand to combine different types of fruits to support the same weight and pack them into boxes. For the above: there are equipment that uses fruit trays to sort fruits of different sizes, and for subsequent use needs, it is often necessary to combine multiple sorting and conveying equipment, such as using a belt weighing scale to weigh the fruits and then sort them, and then manually combine the fruits. This method will cause damage to the fruits on the one hand, and the serious damage rate is relatively high. It affects the quality of the fruit. On the other hand, the above method is relatively cumbersome and complicated, especially after the fruit is sorted, it needs to be combined, the workload is relatively large, and the weight difference after the combination is greatly affected by human factors, which cannot fully guarantee the work progress. For this reason, we provide a fruit non-destructive sorting and weighing production line with reasonable design, simple structure, convenient processing and integration of weighing, sorting and combination functions. On the one hand, it reduces the possibility of damage to the fruit and ensures the quality of the fruit. On the other hand, it can reduce the complexity of production and processing work, reduce workload, effectively ensure the relative consistency of weight after combination, improve work progress, and fully meet the use needs. Utility Model Content

[0004] In response to the technical problems existing in the above-mentioned fruit sorting, packaging and processing process, the utility model proposes a fruit non-destructive sorting and weighing production line with reasonable design, simple structure, convenient processing and integration of weighing, sorting and combining functions. On the one hand, it reduces the possibility of fruit damage and ensures the quality of the fruit. On the other hand, it can reduce the complexity of production and processing work, reduce the workload, effectively ensure the relative consistency of weight after combination, improve the work progress, and fully meet the use needs.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is a fruit lossless sorting and weighing production line, comprising a feeding conveyor, on which fruit trays are placed, a feeding elevator with a Z-shaped design is provided on one side of the feeding conveyor, a rotary weighing machine is provided on one side of the feeding elevator, a first turning conveyor with an L-shaped design is provided on the rear side of the rotary weighing machine, an over-and-under rejecting machine is provided on the first turning conveyor close to the rotary weighing machine, the output end of the turning conveyor is provided with a combination machine with sorting and combination functions on both the front and rear sides, the two output ends of the combination machine are respectively provided with a second turning conveyor and a third turning conveyor with an L-shaped design, the ends of the second turning conveyor and the third turning conveyor are provided with a first summarizing conveyor, the output end of the first summarizing conveyor is provided with a fourth turning conveyor, and its output end is connected to the input end of the feeding conveyor.

[0006] Preferably, a first finished product conveyor arranged in a Z shape is provided below the fourth turning conveyor, a second finished product conveyor is provided at the end of the first finished product conveyor, and a second collecting conveyor arranged perpendicularly thereto is provided at the end of the second finished product conveyor, and empty frame workbenches are provided on the first finished product conveyor and the second finished product conveyor on both sides near the output end of the combination machine.

[0007] Preferably, a material receiving platform is provided on one side of the over-and-under rejecting machine, a fruit tray return conveyor is provided between the two material receiving platforms, a receiving conveyor is provided at the end of the fruit tray return conveyor, and its output end is connected to the middle section of the feeding conveyor.

[0008] Preferably, the combination machine includes a support frame, a roller feeding conveyor line is provided at the geometric center of the support frame, output conveyor lines are provided on both sides of the roller feeding conveyor line, a plurality of longitudinally designed support plates are evenly distributed above the support frame, two of the support plates form a group, and a pushing mechanism for longitudinally pushing the fruit tray is provided above them, a lifting mechanism is provided on the front side of the pushing mechanism, a supporting mechanism is provided below the two output conveyor lines, and a blocking mechanism is provided on one side of the outermost supporting mechanism, and corresponds to the edge of the support frame.

[0009] Preferably, the pushing mechanism includes mounting seats set up on both sides above the support plate, a sliding rod is provided between the two mounting seats, a sliding seat is provided on the outside of the sliding rod, a crossbeam is provided above the sliding seat, a pushing cylinder is provided on the upper outside of the support frame, and its output end is connected to the crossbeam, the lifting mechanism includes a lifting cylinder set up on one side of the crossbeam, and a push plate is provided at the output end of the lifting cylinder.

[0010] Preferably, the supporting mechanism includes a supporting mounting frame connected to the output conveyor line, a supporting cylinder is provided on one side of the supporting mounting frame, and a top plate with a U-shaped design is provided at the output end of the supporting cylinder. The blocking mechanism includes a blocking mounting frame connected to the lower side of the output conveyor line, a blocking cylinder is provided on the blocking mounting frame, and a blocking rod is provided at the output end of the blocking cylinder.

[0011] Preferably, a limiting mechanism is provided on both sides above the output end of the conveying output line, the limiting mechanism includes a limiting cylinder, and a limiting plate is provided at the output end of the limiting cylinder. One end face of the limiting plate is designed in an arc shape and is adapted to the outer periphery of the fruit tray.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. The utility model provides a fruit lossless sorting and weighing production line, which utilizes a feeding conveyor, a feeding elevator, a rotary weighing machine, a turning conveyor and a combiner to form a production line. It adopts an integrated production line of weighing first, then sorting, then combining and finally packing, so as to achieve the purpose of sorting fruits according to weight levels, combining a certain weight according to the sorting levels, and finally packing. The device has a reasonable design, a simple structure, and is easy to process. It integrates the weighing, sorting and combining functions into one. On the one hand, it reduces the possibility of damage to fruits and ensures the quality of fruits. On the other hand, it can reduce the complexity of production and processing work, reduce workload, effectively ensure the relative consistency of weight after combination, improve work progress, and fully meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 This is a structural diagram of the fruit lossless sorting and weighing production line;

[0016] Figure 2 This is a top view of the structure of the fruit lossless sorting and weighing production line;

[0017] Figure 3 It is a structural diagram of the combined machine;

[0018] Figure 4 It is a schematic diagram of the structure of the combined machine from a bottom view;

[0019] Figure 5 An enlarged view of part of the structure for the installation of the jacking mechanism;

[0020] Figure 6 It is an enlarged view of part of the structure of the push mechanism;

[0021] In the above figures, 1. feeding conveyor; 2. fruit tray; 3. feeding elevator; 4. rotary weighing machine; 5. first turning conveyor; 6. over-and-under rejector; 7. combiner; 71. support frame; 72. support plate; 8. second turning conveyor; 9. third turning conveyor; 10. first collecting conveyor; 11. fourth turning conveyor; 12. first finished product conveyor; 13. second finished product conveyor; 14. second collecting conveyor; 15. material receiving platform; 16. fruit tray return conveyor; 161. receiving conveyor; 17. empty frame workbench ; 18. Roller feeding conveyor line; 19. Output conveyor line; 20. Pushing mechanism; 201. Mounting seat; 202. Slide rod; 203. Slide seat; 204. Crossbeam; 205. Pushing cylinder; 21. Lifting mechanism; 211. Lifting cylinder; 212. Push plate; 22. Supporting mechanism; 221. Supporting mounting frame; 222. Supporting cylinder; 223. Top plate; 23. Blocking mechanism; 231. Blocking cylinder; 232. Blocking rod; 233. Blocking mounting frame; 24. Limiting mechanism; 241. Limiting cylinder; 242. Limiting plate. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Examples, such as Figures 1 to 6As shown, a fruit lossless sorting and weighing production line includes a feeding conveyor 1, on which fruit trays 2 are placed, and fruit materials can be placed on the fruit trays 2 by humans or robots. A feeding elevator 3 with a Z-shaped design is provided on one side of the feeding conveyor 1, which receives the fruit trays 2 and fruits that are transported, and inputs them into the weighing area. A rotary weighing machine 4 is provided on one side of the feeding elevator 3, which weighs the materials in a static manner, and the weight information of the materials after weighing is recorded in an external control system. Of course, different weighing methods can be selected according to different needs, such as belts, plate belts, weighing pans, etc., while also ensuring that the materials will be transported to the next processing area during weighing. A first turning conveyor 5 with an L-shaped design is provided on the rear side of the rotary weighing machine 4, which receives the weighed materials and transports them to the sorting assembly machine 7. The first turning conveyor 5 near the rotary weighing machine 4 The conveyor 5 is provided with an over-and-under rejecting machine 6. The over-and-under rejecting machine 6 includes two processing steps of overweight rejection and underweight rejection to select qualified products for subsequent combination. Of course, this mechanism can also be used to sort different levels, that is, multiple combination machines 7 are connected in parallel on one side of the over-and-under rejecting machine 6 to carry out different combination methods, and the weighing speed can also be connected in parallel with multiple weighing machines, and then summarized to multiple combination hosts to achieve one-to-one, one-to-many, many-to-one or many-to-many methods. The output end of the turning conveyor is provided with a combination machine 7 with sorting and combination functions on both the front and rear sides. The combination machine 7 is used to sort and combine the materials after weighing, and adopts a two-side push combination or a single-side push combination method. When the combination machine 7 does not meet the required results, it can be fed to the combination machine 7, or this group can be automatically increased in accuracy range and continued to be calculated according to user needs to achieve the purpose of successful combination.The two output ends of the combination machine 7 are respectively provided with a second turning conveyor 8 and a third turning conveyor 9 designed in an L shape. The ends of the second turning conveyor 8 and the third turning conveyor 9 are provided with a first summary conveyor 10, which summarizes the single fruit trays 2 and conveys them to the next process. The output end of the first summary conveyor 10 is provided with a fourth turning conveyor 11, and its output end is connected to the input end of the loading conveyor 1. A first finished product conveyor 12 with a Z-shaped arrangement design is provided below the fourth turning conveyor 11. A second finished product conveyor 13 is provided at the end of the first finished product conveyor 12. The two finished product conveyors correspond to the two combination areas of the combination machine 7, which fully ensures the progress of the processing work. The end of the second finished product conveyor 13 is provided with a second summary conveyor 14 arranged perpendicular to it. In order to further improve the integrity of the production line, an over-and-under rejecting machine is set on one side. There is a material receiving platform 15. After the fruit tray 2 or the fruit tray 2 and the fruit are removed from the material receiving platform 15, the fruit can be output manually or by a robot, and the single fruit tray 2 can be transported to the fruit tray return conveyor 16 to ensure the smooth progress of the production and processing work. A fruit tray return conveyor 16 is provided between the two material receiving platforms 15. The end of the fruit tray return conveyor 16 is provided with a receiving conveyor 161, and its output end is connected to the middle section of the feeding conveyor 1. After the above-mentioned establishment, the entire production line for fruit material feeding, weighing and sorting combination constitutes a closed loop, which fully guarantees the processing work progress. An empty frame workbench 17 is provided on the first finished product conveyor 12 and the second finished product conveyor 13 on both sides of the output end of the combiner 7. The empty frame workbench 17 is for placing the assembled fruit in an empty frame to provide convenience, and then transport it to the second summary conveyor 14 via the finished product conveyor;

[0025] The specific working method is described as follows: a certain number of fruit trays 2 are placed on the production line, and the fruit trays 2 can protect the fruits from being damaged. The fruit trays 2 circulate on the production line, and fruit materials are placed on the fruit trays 2 at the feeding conveyor 1. There is a sorting structure at the end of the feeding conveyor 1 to sort the fruit trays 2. The sorted fruit trays 2 enter the feeding elevator 3 at the rear. The feeding elevator 3 is equipped with a push block, which adopts the plastic mesh belt chain plate in the prior art. Among them, the push block is set in the plastic mesh belt chain plate and is fan-shaped. It can be transported with the plastic mesh belt chain plate. When it is on the top, it will protrude in a rotating manner and limit the fruit tray 2, especially the fruit tray 2 in the inclined section of the feeding elevator 3. During the process, adjacent fruit trays 2 will be arranged at equal distances. Of course, the above-mentioned setting between the push block and the plastic mesh belt chain plate is an existing mature and conventional technical means, and the details will not be repeated. After the push block is lifted, the spacing between the fruit trays 2 is guaranteed to be consistent, and then enter the dial guide mechanism on the rotary weighing machine 4. The dial guide mechanism and the feeding elevator 3 and the rotary weighing machine 4 keep the same rhythm. The fruit trays 2 enter the rotary weighing machine 4 for weighing in an orderly manner through the dial. The rotary weighing machine 4 contains multiple weighing areas. The fruit trays 2 rotate on the rotary weighing machine 4 for weighing, so that the fruit trays 2 and the weighing pan remain relatively static. Static weighing effectively improves the weighing accuracy, and each weighing pan is constantly running. The speed is not affected by weighing and becomes slower. Of course, for products with low precision requirements, other weighing methods can be used to simplify the structure and reduce costs. For the fruit trays 2 after weighing, the weight and other information are recorded in the external control system. Then, the fruit trays 2 are conveyed to the rejection position of the over-and-under rejecting machine 6 through the first turning conveyor 5. According to the weight information, the fruit trays are rejected from the main conveyor belt at the rejection position. The over-and-under rejecting machine 6 in this embodiment includes two levels of rejection, overweight and underweight. The fruit trays 2 are then removed and transferred to the fruit tray return conveyor belt, which returns to the feeding conveyor 1 position for further feeding. The qualified fruit trays 2 are continuously conveyed forward through the first turning conveyor 5 to reach the assembly machine. 7. On the combiner 7, according to the set weight, calculate which fruits in the fruit trays 2 reach the set value, and arrange these fruits on one side of the conveyor belt and transport them to the fruit-taking station (i.e., the end of the output conveyor line 19). Then, according to the number of fruit trays 2 and the calculation result, choose to refill the combiner 7, or continue to combine, and then arrange them on the other side of the combiner 7 and transport them to the fruit-taking station (i.e., the end of the output conveyor line 19). For fruit trays 2 that have not participated in the combination for a long time, or if there is no combination plan through calculation, choose to discharge a part of them backward through the middle main conveyor (i.e., the rear end of the roller feeding conveyor line 18) to make them leave the combination position, continue to refill, and recalculate;When the fruit tray 2 arrives at the fruit picking station, you can choose to manually pick up the fruit or robot pick up the fruit according to the cost and speed requirements to remove the fruit from the fruit tray 2 and put it into the fruit box (i.e., the empty frame workbench 17), and then transport it out of the production line through the finished product conveyor line to carry out the lower process. The user can seamlessly connect other processes such as unpacking, sealing, packaging, and palletizing as needed; for the fruit tray 2 with the fruit taken off on both sides, it can be transported to the first summary conveyor 10 through the second turning conveyor 8 and the third turning conveyor 9 respectively, and then transported to the loading conveyor 1 to continue loading, completing a process;

[0026] In the above process, the production line composed of the feeding conveyor 1, the feeding elevator 3, the rotary weighing machine 4, the turning conveyor and the combiner 7 is utilized, and an integrated production line of weighing first, then sorting, then combining and finally packing is adopted, so that the fruits are sorted according to the weight level, and then combined to a certain weight according to the sorting level, and finally packed. The device has a reasonable design, a simple structure, and is easy to process, and integrates the weighing, sorting and combining functions into one. On the one hand, it reduces the possibility of damage to the fruit and ensures the quality of the fruit. On the other hand, it can reduce the complexity of production and processing work, reduce workload, effectively ensure the relative consistency of weight after combination, improve the work progress, and fully meet the use requirements.

[0027] In order to effectively combine the weighed fruit materials according to the established weight and provide convenient conditions for subsequent processing procedures, the combiner 7 includes a support frame 71, and a roller feeding conveyor line 18 is provided at the geometric center of the support frame 71, wherein the roller feeding conveyor line 18 includes a plurality of rollers arranged side by side, and the plurality of rollers can rotate synchronously. Of course, this mechanism is an existing mature and conventional technical means, and the specific working principle and working method are no longer repeated. Its function is to take over the material on the first turning conveyor 5 and provide convenience for the subsequent material feeding operation. Output conveyor lines 19 are provided on both sides of the roller feeding conveyor line 18, which mainly take over the material on the first turning conveyor 5. The combined materials are output to the next process. A plurality of longitudinally designed support plates 72 are evenly distributed above the support frame 71. Two support plates 72 form a group, and a pushing mechanism 20 for longitudinally pushing the fruit tray 2 is provided above the supporting frame 71. A lifting mechanism 21 is provided on the front side of the pushing mechanism 20. A supporting mechanism 22 is provided below the two output conveyor lines 19. A blocking mechanism 23 is provided on one side of the outermost supporting mechanism 22, and corresponds to the edge of the supporting frame 71. The specific description is as follows: the operation of the pushing mechanism 20 and the supporting mechanism 22 in the combined machine 7 is connected to the external PLC control system. That is to say, after a plurality of materials are weighed, their weights are The weight information will also be recorded in the PLC control system. When the material is transported to the combiner 7 and needs to be combined, the external PLC control system will control the operation of the pushing mechanism 20 and the supporting mechanism 22 according to the previous weight record of the material to ensure the effective implementation of the combination work. Of course, the above-mentioned method of freely controlling the operation of each mechanism with the help of the PLC control system based on the weight information is an existing mature and conventional technology. The specific working principle and working method will not be repeated here. The above-mentioned specific working method is described as follows: a roller feeding conveyor line 18 is provided in the middle of the combined main machine, and the roller power interval in the roller feeding conveyor line 18 is set to prevent To solve the problem of excessive thrust when feeding, two output conveyor lines 19 are provided on both sides for receiving the successfully combined materials. A pushing structure is set up above the support frame 71. Each fruit tray 2 station corresponds to a liftable pushing structure to ensure that each successfully combined fruit tray 2 can be pushed out separately. The pushing mechanism 20 is fixed on the beam 204 which can be moved left and right. The beam 204 is connected to the machine body through a sliding structure. A supporting structure is provided at the lower part of the roller conveyor line to eject the fruit tray 2 that meets the weight combination to ensure the smooth and safe combination. The blocking mechanism 23 set up at the rear of the roller feeding conveyor line 18 is used to ensure that there is a fixed number of combination areas.

[0028] During operation, the jacking mechanism 22 at the successfully combined station rises, lifting the fruit tray 2 to a certain height, the successfully combined pushing structure descends, and the other pushing mechanisms 20 remain stationary, and then the crossbeam 204 moves to push the successfully combined fruit tray 2 to one side of the output conveyor line 19. After pushing into place, the crossbeam 204 does not move, and then the next group of combinations is calculated, or the next group of combinations is calculated after replenishing, and the combination is successful again, and the pushing mechanism 20 pushes another group to the output conveyor line 19 on the other side; the output conveyor line 19 transports the successfully combined fruit tray 2 to the fruit retrieval station for the next step, and the combination station still has no combinable solution after replenishing, the blocking mechanism 23 opens, and one or several fruit trays 2 are released, and replenishing is continued and recalculated; the above-mentioned setting up of two conveying output lines to achieve the purpose of bilateral unloading is to facilitate the two stations during rear boxing, which is convenient for manual operation. If a robot or other method is used for boxing, a unilateral output conveyor line 19 and a circular unidirectional pushing structure can also be used to simplify the overall structure.

[0029] In order to effectively combine fruits of different weights according to the settings and improve the functionality of the device, the pushing mechanism 20 includes mounting seats 201 set on both sides above the support plate 72, a slide bar 202 is set between the two mounting seats 201, a slide seat 203 is set on the outside of the slide bar 202, a crossbeam 204 is set above the slide seat 203, a pushing cylinder 205 is set on the upper outside of the support frame 71, and its output end is connected to the crossbeam 204, the lifting mechanism 21 includes a lifting cylinder 211 set on one side of the crossbeam 204, and a push plate 212 is set at the output end of the lifting cylinder 211. The specific description is: the function of the lifting mechanism 21 is to use the extension of the lifting cylinder 211 to drive the push plate 212 to be placed at a position corresponding to the horizontal plane of the fruit tray 2, so as to facilitate the subsequent pushing. Condition, and the contraction of the lifting cylinder 211 drives the push plate 212 to reset (that is, it is at the top). In this state, the fruit corresponding to the lifting mechanism 21 is not pushed, that is, the weight of the fruit at the corresponding position does not meet the combination. In this way, the push plate 212 is placed at the top, which can ensure the smooth operation of the pushing mechanism 20 and the stability of the fruit that is not pushed. When the pushing work needs to be carried out: according to the setting of the external system, the lifting mechanism 21 corresponding to the fruit to be combined is controlled to extend, and then the pushing cylinder 205 is controlled to extend or contract, and the fruit tray 2 and the fruit on the roller feeding conveyor line 18 are pushed to the rear or front output conveyor line 19, especially completing the pushing of the material that meets the combined weight, providing convenient conditions for the next process of the material.

[0030] In order to transport the fruit trays 2 carrying fruits of different weights to the conveying output line, the supporting mechanism 22 includes a supporting mounting frame 221 connected to the output conveying line 19, and a supporting cylinder 222 is provided on one side of the supporting mounting frame 221. The output end of the supporting cylinder 222 is provided with a top plate 223 designed in a U shape, and the distance between the inner side surfaces thereof is greater than the size of the roller in the roller feeding conveying line 18 to ensure that the top plate 223 will not come into contact with the roller when lifting the fruit tray 2 to a certain distance, thereby ensuring the functionality of use. Specifically described as: according to the weight of the fruit on each fruit tray 2 recorded by the external control system, and with Based on the weight of the fruit combination set by the external system, the operation of the supporting mechanisms 22 at different positions is controlled respectively, that is, the supporting cylinder 222 is controlled to extend and act on the top plate 223, and the fruit tray 2 is raised to a certain distance by means of the top plate 223, and the lower end surface of the fruit tray 2 must be ensured to be higher than the upper end surface of the roller feeding conveyor line 18 and flush with the upper end surface of the output conveyor line 19, so as to facilitate the pushing mechanism 20 to push it to the output conveyor line 19. After the fruit tray 2 is pushed out, the supporting mechanism 22 is retracted and waits for the next pushing action; in order to limit a plurality of fruit trays 2 loaded with fruits to the pushing mechanism 20, The blocking mechanism 23 includes a blocking mounting frame 233 connected to the lower side of the output conveyor line 19, and a blocking cylinder 231 is provided on the blocking mounting frame 233, which is inverted on the blocking mounting frame 233, that is, its extension will drive the blocking rod 232 to descend, and its shortening will drive the blocking rod 232 to rise. This establishment method is an existing mature technology and the details are not repeated here. The output end of the blocking cylinder 231 is provided with a blocking rod 232. When it is necessary to limit the position of the fruit tray 2, the blocking cylinder 231 contracts and causes the blocking rod 232 to rise and its upper end surface is higher than the upper end surface of the roller feeding conveyor line 18 to limit the outermost The fruit trays 2 on the side are blocked, and when there is no suitable combination of the fruit trays 2 and the fruits on the roller feeding conveyor line 18 in the combiner 7 after feeding, it is necessary to output one or more of the fruit trays 2 on the roller feeding conveyor line 18 to the rear. At this time, the blocking cylinder 231 extends and cancels the limit on the outermost fruit tray 2, and when the fruit trays 2 that need to be exported meet the output quantity, the blocking cylinder 231 contracts and continues to limit the fruit trays 2 until the next time the fruit trays 2 need to be unblocked and run again, and so on, while the roller feeding conveyor line 18 continues to feed, to ensure the progress of the combination work.

[0031] In order to transport the assembled fruit tray 2 and the fruit to the end of the output conveyor line 19 and to provide convenience for people to take out the fruit in batches, limiting mechanisms 24 are arranged on both sides above the output end of the conveyor output line. The limiting mechanism 24 includes a limiting cylinder 241. A limiting plate 242 is arranged at the output end of the limiting cylinder 241. One side end face of the limiting plate 242 is designed in an arc shape and is adapted to the outer periphery of the fruit tray 2. The specific description is: when there is no fruit tray 2 on the output conveyor line 19, the limiting cylinder 241 is in an extended state, the two limiting plates 242 are close to each other, and constitute an area for limiting the fruit tray 2. When the assembled fruit tray 2 and the fruit are When conveying, the limiting mechanism 24 is still in the extended state. After people have removed all the fruits on the assembled fruit tray 2, the limiting mechanism 24 is controlled to operate so that the limiting cylinder 241 contracts and the limit on the fruit tray 2 is cancelled. Then, under the action of the conveying conveyor line, the fruit tray 2 is transported to the subsequent turning conveyor. In this way, multiple fruit trays 2 will be transported to the first summary conveyor 10, providing a prerequisite for the fruit tray 2 to be transported to the next turning conveyor. Then, multiple fruit trays 2 will be transported back to the feeding conveyor 1, which is convenient for people to place fruits on the fruit tray 2 again, ensuring the smooth progress of subsequent weighing, sorting and combination work, and improving the work process.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A fruit non-destructive sorting and weighing production line, comprising a feeding conveyor, on which a fruit tray is placed, characterized in that: A loading elevator with a Z-shape design is provided on one side of the loading conveyor, a rotary weighing machine is provided on one side of the loading elevator, a first turning conveyor with an L-shape design is provided on the rear side of the rotary weighing machine, an over-and-under rejecting machine is provided on the first turning conveyor close to the rotary weighing machine, and a combination machine with sorting and combination functions on both the front and rear sides is provided at the output end of the turning conveyor, a second turning conveyor and a third turning conveyor with an L-shape design are provided at the two output ends of the combination machine respectively, a first collecting conveyor is provided at the ends of the second and third turning conveyors, a fourth turning conveyor is provided at the output end of the first collecting conveyor, and its output end is connected to the input end of the loading conveyor.

2. The fruit lossless sorting and weighing production line according to claim 1 is characterized in that: A first finished product conveyor arranged in a Z shape is provided below the fourth turning conveyor, a second finished product conveyor is provided at the end of the first finished product conveyor, and a second summary conveyor arranged perpendicularly thereto is provided at the end of the second finished product conveyor. Empty frame workbenches are provided on the first finished product conveyor and the second finished product conveyor on both sides near the output end of the combination machine.

3. The fruit lossless sorting and weighing production line according to claim 2 is characterized in that: A material receiving platform is provided on one side of the over-and-under rejecting machine, a fruit tray return conveyor is provided between the two material receiving platforms, a receiving conveyor is provided at the end of the fruit tray return conveyor, and its output end is connected to the middle section of the feeding conveyor.

4. The fruit lossless sorting and weighing production line according to claim 1 is characterized in that: The combined machine includes a support frame, a roller feeding conveyor line is provided at the geometric center of the support frame, output conveyor lines are provided on both sides of the roller feeding conveyor line, a plurality of longitudinally designed support plates are evenly distributed above the support frame, two of the support plates form a group, and a pushing mechanism for longitudinally pushing the fruit tray is provided above the support plates, a lifting mechanism is provided on the front side of the pushing mechanism, a supporting mechanism is provided below the two output conveyor lines, and a blocking mechanism is provided on one side of the outermost supporting mechanism, and corresponds to the edge of the support frame.

5. The fruit lossless sorting and weighing production line according to claim 4 is characterized in that: The pushing mechanism includes mounting seats set up on both sides above the support plate, a sliding rod is set between the two mounting seats, a sliding seat is set on the outside of the sliding rod, a crossbeam is set above the sliding seat, a pushing cylinder is set on the upper outside of the support frame, and its output end is connected to the crossbeam, the lifting mechanism includes a lifting cylinder set up on one side of the crossbeam, and a push plate is set at the output end of the lifting cylinder.

6. The fruit lossless sorting and weighing production line according to claim 5, characterized in that: The supporting mechanism includes a supporting mounting frame connected to the output conveyor line, a supporting cylinder is provided on one side of the supporting mounting frame, and a top plate with a U-shaped design is provided at the output end of the supporting cylinder. The blocking mechanism includes a blocking mounting frame connected to the lower side of the output conveyor line, a blocking cylinder is provided on the blocking mounting frame, and a blocking rod is provided at the output end of the blocking cylinder.

7. The fruit lossless sorting and weighing production line according to claim 6, characterized in that: A limiting mechanism is provided on both sides above the output end of the conveying output line. The limiting mechanism includes a limiting cylinder. A limiting plate is provided at the output end of the limiting cylinder. One end face of the limiting plate is designed in an arc shape and is adapted to the outer periphery of the fruit tray.

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