Automatic stacking production line for seedling hole trays

Abstract

The invention belongs to the technical field of tray turnover transportation, and provides an automatic seedling tray stacking production line which comprises a multi-layer in-bed machine, a tray conveying translation device and a seedling trolley traction device. The plug tray conveying translation device comprises a first plug tray conveying mechanism and a plug tray shifting mechanism located at the discharging end of the first plug tray conveying mechanism; the multi-layer in-bed machine comprises a rack, a second plug tray conveying mechanism, a first plug tray pushing mechanism, a lifting platform and a second plug tray pushing mechanism are arranged on the rack, the second plug tray conveying mechanism is located on the downstream of the plug tray shifting mechanism, and the first plug tray pushing mechanism corresponds to the discharging end of the second plug tray conveying mechanism. The lifting platform is located at the downstream of the first plug tray pushing mechanism, and the second plug tray pushing mechanism is located on the lifting platform; the seedling-raising vehicle traction device comprises a track, and a seedling-raising vehicle shifting mechanism and a seedling-raising vehicle blocking mechanism are arranged on the track. According to the automatic tray stacking device, automatic stacking of trays on all seedling raising vehicles can be achieved, the labor cost is greatly reduced, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of plug tray turnover transportation, and in particular to an automatic stacking production line for seedling cultivation plug trays. Background Art

[0002] Plug tray seedling technology is a modern seedling technology that uses special plug trays of different specifications as containers, peat, vermiculite and other light soil-free substrate materials as seedling substrates, mechanized precision sowing, one hole and one seed, and one-time seedlings. Plug tray seedling technology is a form of factory seedling cultivation. Usually, the plug tray is filled and sown first, and then the plug tray is placed on the seedling vehicle. The seedling vehicle realizes the turnover and transportation of the plug tray, and the plug tray is moved to the digital seedling workshop to realize factory seedling cultivation in the seedling workshop.

[0003] A seedling car is a vehicle specially used for the transportation and turnover of horticultural crop seedlings. It is mainly used for turnover and transportation within the base greenhouse to improve turnover efficiency. The design of the seedling car takes into account the characteristics of horticultural crops. It usually has a multi-layer structure to facilitate the handling and loading and unloading of seedlings of different types of horticultural crops. The seedling car mainly includes a plug tray transfer car and a seedling transfer car; the plug tray transfer car is used to transport the sown plug tray to the germination room, and its height and width are determined according to the size of the plug tray, the space of the germination room, and the number of seedlings. Seedling carts are widely used in the field of vegetable seedling cultivation, especially in intensive seedling factories and seedling factories with relatively complete internal facilities in the base; they are suitable for turnover and transportation in the base greenhouse, which can reduce manual operations and improve work efficiency.

[0004] Compared with traditional seedling raising methods, factory seedling raising technology can shorten seedling raising time, save seed consumption, occupy a small area, is suitable for mechanized operation, saves labor and effort, realizes large-scale production, can artificially control the environment, is not affected by external conditions, can minimize the occurrence of diseases and insect pests, improve the seedling rate and promote uniform and strong seedlings. Since factory seedling raising is unified seedling raising and unified management, it ensures the completion of sowing tasks and the matching of various early and late crops according to plan. It is also conducive to the timely promotion of new varieties and is an important way to achieve good varieties and seedlings.

[0005] Although the use of seedling raising vehicles provides convenience for factory seedling raising, there is still no equipment specifically used to realize automatic stacking of plug trays on seedling raising vehicles. The placement of plug trays on seedling raising vehicles is still mainly done manually. Operators need to manually carry plug trays and place them on seedling raising vehicles in sequence. Since the seedling raising vehicle is a multi-layer structure with several layers of storage tables, multiple plug trays can be placed side by side on each storage table in sequence. Therefore, it is necessary to manually place the plug trays one by one on the storage table. After filling one storage table, the next storage table is placed. When a seedling raising vehicle is filled, the next seedling raising vehicle is placed. Finally, the seedling raising vehicle filled with plug trays is towed to the seedling raising workshop by an electric tractor. The working method of manually carrying plug trays and placing them on the seedling raising vehicle is not only labor-intensive, but also low in work efficiency and high in labor cost. It is difficult to meet the requirements of factory seedling raising for the turnover and transportation of plug trays. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, in-depth research was conducted and a lot of creative work was put into it, thus completing the present invention.

[0007] Specifically, the technical problem to be solved by the present invention is to provide an automatic stacking production line for seedling trays to solve the technical problems of the current working method of manually carrying the trays and placing them on the seedling vehicle, which is not only labor-intensive, low in work efficiency, but also high in labor costs.

[0008] In order to solve the above technical problems, the technical solution of the present invention is: A seedling tray automatic stacking production line comprises a multi-layer tray loading machine, a tray conveying and translating device is provided upstream of the multi-layer tray loading machine, and a seedling vehicle traction device is provided downstream of the multi-layer tray loading machine; The cell tray conveying and translating device comprises a first cell tray conveying mechanism and a cell tray shifting mechanism, wherein the cell tray shifting mechanism is located at a discharge end of the first cell tray conveying mechanism; The multi-layer bed feeding machine includes a frame, on which a second hole tray conveying mechanism, a first hole tray pushing mechanism, a lifting platform and a second hole tray pushing mechanism are provided, the second hole tray conveying mechanism is located downstream of the hole tray dialing mechanism, and the loading end of the second hole tray conveying mechanism extends outside the frame and corresponds to the unloading end of the first hole tray conveying mechanism, the first hole tray pushing mechanism is located above the second hole tray conveying mechanism, and the first hole tray pushing mechanism corresponds to the unloading end of the second hole tray conveying mechanism, the lifting platform is located downstream of the first hole tray pushing mechanism, and the second hole tray pushing mechanism is located on the lifting platform; The seedling vehicle traction device includes a track, a seedling vehicle driving mechanism and a seedling vehicle blocking mechanism. Two tracks are correspondingly provided, and a seedling vehicle guide channel compatible with the seedling vehicle is provided between the two tracks. The seedling vehicle driving mechanism is located on one side of the end of one of the tracks, and the seedling vehicle blocking mechanism is located at the end of the other track.

[0009] As an improved technical solution, the first cell tray conveying mechanism includes a first conveying frame, on which a first conveying belt driven by a first driving device is wound, and the first conveying frame is also provided with a first cell tray guide channel for realizing cell tray guided conveying.

[0010] As an improved technical solution, the plug tray conveying mechanism includes a first conveying frame, on which a first plug tray baffle for realizing plug tray limit blocking is fixedly installed, and the first plug tray baffle is located at the unloading end of the first conveyor belt and is arranged corresponding to the first conveyor belt; A first sliding mounting plate driven by a second driving device is slidably mounted on the first conveying frame in a horizontal direction, the first sliding mounting plate is located above the first conveying belt, and a shifting fork driven by a third driving device is rotatably mounted on the first sliding mounting plate.

[0011] As an improved technical solution, the second hole tray conveying mechanism includes a second conveying frame body fixedly mounted on the frame, a second conveying belt driven by a fourth driving device is wound around the second conveying frame body, and the second conveying belt is at the same height as the first conveying belt or is located below the first conveying belt; A second hole tray baffle for realizing hole tray limit blocking is fixedly installed on the second conveying frame body, the second hole tray baffle is located at the unloading end of the second conveying frame body and is arranged corresponding to the second conveyor belt, and a push transition plate is also fixedly installed on the side of the second conveying frame body close to the lifting platform, and the push transition plate is arranged corresponding to the lifting platform.

[0012] As an improved technical solution, the first hole tray pushing mechanism includes a translation frame slidably installed on the frame in a horizontal direction and driven by a fifth driving device, and a lifting frame driven by a sixth driving device is slidably installed on the translation frame in a vertical direction. A first hole tray pushing plate for pushing the hole tray is fixedly installed at the bottom of the lifting frame, and the first hole tray pushing plate is located above the second conveyor belt.

[0013] As an improved technical solution, the lifting platform is slidably mounted on the frame in a vertical direction and driven by a seventh driving device, and a second plug tray guide channel for guiding and transporting the plug tray is provided on the lifting platform; An origin detection sheet is fixedly mounted on the frame, and a first photoelectric sensor for realizing detection of the origin detection sheet is fixedly mounted on the lifting platform. When the first photoelectric sensor and the origin detection sheet are in a facing state, the lifting platform and the second conveyor belt are at the same height; A second photoelectric sensor for detecting storage platforms at each level of the seedling raising vehicle is also fixedly installed on one end of the lifting platform close to the traction device of the seedling raising vehicle, and the second photoelectric sensor is located at the bottom of the lifting platform.

[0014] As an improved technical solution, the second hole tray pushing mechanism includes a pushing frame which is slidably installed on the lifting platform along the length direction of the second hole tray guide channel and driven by an eighth driving device. The pushing frame is provided with a second hole tray pushing plate driven by a ninth driving device. The second hole tray pushing plate is fixedly provided with an anti-warping baffle on the side close to the traction device of the seedling vehicle. When the second hole tray pushing plate is lifted to the feeding position, there is a feeding gap between the second hole tray pushing plate and the lifting platform for the hole tray to pass through.

[0015] As an improved technical solution, the end of the lifting platform close to the traction device of the seedling vehicle is also rotatably installed with a flip lap plate driven by a tenth drive device. When the flip lap plate is in a overlapping state, the end of the flip lap plate close to the lifting platform is flush with the lifting platform.

[0016] As an improved technical solution, the seedling raising vehicle transmission mechanism and the seedling raising vehicle blocking mechanism are respectively located at the same direction ends of the two tracks; The seedling car shifting mechanism comprises a second shifting frame body located on one side of the track, a second sliding mounting plate driven by an eleventh driving device is slidably mounted on the second shifting frame body along the length direction of the guide channel of the seedling car, a shifting block is rotatably mounted on the second sliding mounting plate, and the shifting block has a shifting end extending to the guide channel of the seedling car. The sliding mounting plate is also provided with an elastic reset member and a stopper, the elastic reset member is connected to the shifting block, the stopper is fixedly mounted on the second sliding mounting plate, and under the action of the elastic reset member, the shifting block is set against the stopper; The blocking mechanism of the seedling raising vehicle comprises a blocking cylinder, which is fixedly mounted on the track and arranged close to the end of the track.

[0017] As an improved technical solution, a cylindrical pin is fixedly installed on the second sliding mounting plate, and the shift block is provided with a mounting hole adapted to the cylindrical pin, the mounting hole is located between the shifting end and the connecting end of the shift block, and the shift block is rotatably installed on the second sliding mounting plate through the cylindrical pin and the mounting hole, a connecting column is fixedly installed on the connecting end of the shift block, and a fixing column is also fixedly installed on the second sliding mounting plate, the elastic reset member is a tension spring, the tension spring is located between the connecting column and the fixing column, and the two ends of the tension spring are respectively connected to the connecting column and the fixing column, the stop block is located between the connecting end of the shift block and the fixing column, and under the action of the tension spring, the connecting end of the shift block abuts against the stop block.

[0018] After adopting the above technical solution, the beneficial effects of the present invention are: The automatic seedling tray stacking production line realizes automatic transportation of the trays through the first tray conveying mechanism, realizes orderly transportation of the trays transported to the unloading end of the first tray conveying mechanism through the tray delivery mechanism, orderly delivers the trays to the second tray conveying mechanism, transports the trays to the bottom of the first tray push mechanism through the second tray conveying mechanism and realizes side-by-side placement of multiple trays, synchronously pushes multiple trays transported to the unloading end of the second tray conveying mechanism through the first tray push mechanism, pushes the trays to the lifting platform, and The feeding mechanism cooperates with the plug tray on the lifting platform to push the plug tray on each layer of the storage table of the seedling car, so as to realize automatic loading of the plug tray on the seedling car, and cooperates with the seedling car feeding mechanism and the seedling car blocking mechanism to realize automatic feeding of the seedling car, and orderly feed the multiple connected seedling cars to the plug tray loading position. In this way, the automatic transportation of the plug tray, the orderly feeding of a single plug tray, the synchronous pushing of multiple plug trays, the automatic placement of the plug tray on each layer of the storage table of the seedling car and the automatic feeding of the seedling car are realized, thereby realizing the automated assembly line operation of placing the plug trays on the seedling car in sequence.

[0019] When the automatic seedling tray stacking production line is in operation, the first driving device works to drive the first conveyor belt to transport the tray, and the first tray guide channel is used to guide and limit the tray. After the tray is transported to the unloading end of the first conveying frame, the first tray baffle is used to position and block the tray. Then, the second driving device works to drive the first sliding mounting plate to move, and the tray is sent through the shift fork to be sent to the second conveyor belt. After one tray is sent, the third driving device works to drive the sending end of the shift fork to rise to the avoidance position to avoid the tray when the shift fork is displaced. At the same time, the second driving device works to drive the first sliding mounting plate to move. After the plate is reset and the first sliding mounting plate is reset, the third driving device works to drive the sending end of the shift fork to drop to the sending position, and then the second driving device works to drive the first sliding mounting plate to move to realize the sending of the next hole tray, thereby realizing automatic transportation and orderly sending of the hole trays, and sending the hole trays one by one in an orderly manner to the second conveyor belt; while the hole tray conveying translation device realizes automatic transportation and orderly sending of the hole trays, the fourth driving device works to drive the second conveyor belt to realize the transportation of the hole trays on the second conveyor belt, and after the hole trays are transported to the unloading end of the second conveying frame, the second hole tray baffle realizes the positioning and blocking of the hole trays, and the next hole tray to be transported abuts against the previous hole tray After the hole tray is placed on the lifting platform, the previous hole tray realizes the positioning and blocking of the next hole tray, so that the hole trays can be arranged side by side in sequence along the conveying direction of the hole trays on the second conveyor belt. When the number of arranged hole trays reaches the set value, the sixth driving device works to drive the lifting frame to descend, and realizes the descending displacement of the first hole tray push plate. Then, the fifth driving device works to drive the translation frame and the lifting frame to move in the direction close to the lifting platform, and the first hole tray push plate is used to realize the synchronous pushing of multiple side-by-side hole trays, and push a row of hole trays onto the lifting platform. After that, the sixth driving device works to drive the lifting frame to rise and reset. At the same time, the fifth driving device works to drive the translation frame to reset. Thereby, the first plug tray push plate is reset to realize the pushing of the next batch of plug trays; while the first plug tray pushing mechanism is reset, the seventh driving device works to drive the lifting platform to rise or fall to the set height, so that the lifting platform and the empty layer storage table currently corresponding to the seedling raising vehicle are at the same height, and then the tenth driving device works to drive the flip lap plate to be placed on the current storage table, and then the ninth driving device works to drive the second plug tray push plate to descend to the pushing position, and finally, the eighth driving device works to drive the pushing frame to move, and under the guidance of the second plug tray guide channel, the plug tray on the lifting platform is pushed to the storage table of the seedling raising vehicle through the second plug tray push plate;After completing the loading of the plug trays on one layer of the storage platform, the tenth driving device works to drive the flip lap plate to reset, and then the seventh driving device works to drive the lifting platform to move to the initial height position. While the lifting platform is resetting, the ninth driving device works to drive the second plug tray push plate to rise and reset, and the eighth driving device works to drive the pushing frame to reset. When the lifting platform reaches the initial height position, the second plug tray push plate is also reset to the feeding position. At this time, the lifting platform and the second conveyor belt are at the same height, and there is a feeding gap between the second plug tray push plate and the lifting platform for the plug tray to pass through. The next batch of plug trays can be pushed to the lifting platform through the first plug tray pushing mechanism, and the above steps are repeated to push the next batch of plug trays to the next layer of the storage platform of the seedling car, and so on and so forth to realize the automatic loading of the plug trays on the seedling car; the plug trays of a seedling car are completed. After loading, the blocking cylinder works to release the blocking state of the current seedling car, and then the eleventh driving device works to drive the second sliding mounting plate to move in the opposite direction of the seedling car's conveying. When the shifting block contacts the front end of the next seedling car, it will automatically avoid it. After the shifting block automatically resets, the eleventh driving device works to drive the second sliding mounting plate to move in the length direction of the guide channel of the seedling car, and the shifting block abuts against the next seedling car and shifts the seedling car to move in the direction of the plug tray upper material position. When the last seedling car filled with plug trays passes the plug tray upper material position, the blocking cylinder resets to the blocking state to achieve the positioning and blocking of the next seedling car. When the next seedling car moves to the plug tray upper material position, the shifting block cooperates with the blocking cylinder to realize the positioning of the seedling car at the plug tray upper material position, and the plug tray of the next seedling car can be loaded, and this is repeated. ;

[0020] Through this automatic seedling tray stacking production line, the plug trays can be automatically stacked in sequence on each seedling vehicle, and the loading operation of the plug trays on the seedling vehicle is efficient and orderly. Compared with the traditional manual working method of carrying and placing the plug trays, it has a high degree of automation and realizes the effective replacement of manual labor. Not only the labor cost is greatly reduced, but also the work efficiency is greatly improved, which meets the use needs of factory seedling cultivation for the turnover and transportation of plug trays. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the automatic stacking production line for seedling trays of the present invention; Figure 2 Another three-dimensional structural schematic diagram of the automatic seedling tray stacking production line of the present invention; Figure 3 It is another three-dimensional structural schematic diagram of the automatic stacking production line for seedling trays of the present invention; Figure 4 It is a structural schematic diagram of the plug tray conveying and translation device of the present invention; Figure 5 It is a structural schematic diagram of the first hole tray conveying mechanism of the present invention; Figure 6 It is a structural schematic diagram of the plug tray delivery mechanism of the present invention; Figure 7 This is a schematic diagram of the installation structure of the first driving shaft of the present invention; Figure 8 It is a structural schematic diagram of the hole tray conveying part of the hole tray conveying mechanism of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of the multi-layer bed feeding machine of the present invention; Fig.10 Another three-dimensional structural schematic diagram of the multi-layer bed feeding machine of the present invention; Fig.11 It is a schematic diagram of the coordinated installation structure of the second plug tray conveying mechanism and the first plug tray pushing mechanism of the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the second plug tray conveying mechanism of the present invention; Fig.13 It is a structural schematic diagram of the driving end of the second hole tray conveying mechanism of the present invention; Fig.14 It is a schematic diagram of the installation structure of the second driving shaft of the present invention; Fig.15 It is a three-dimensional structural schematic diagram of the first plug tray pushing mechanism of the present invention; Fig.16 It is another three-dimensional structural schematic diagram of the first plug tray pushing mechanism of the present invention; Fig.17 It is a three-dimensional structural schematic diagram of the hole tray lifting and pushing part of the present invention; Fig.18 It is another three-dimensional structural schematic diagram of the plug tray lifting and pushing part of the present invention; Fig.19 This is a schematic diagram of the installation structure of the lifting platform of the present invention; Fig. 20 It is a structural schematic diagram of the second plug tray pushing mechanism of the present invention; Fig.21 for Fig.16 A schematic diagram of the enlarged structure of the middle I part; Fig. 22 It is a schematic diagram of the installation structure of the push frame of the present invention; Fig.23 It is a structural schematic diagram of the driving end of the mounting frame of the present invention; Fig.24This is a schematic diagram of the structure of the push frame of the present invention away from one end of the installation frame; Fig.25 It is a structural schematic diagram of the traction device of the seedling raising vehicle of the present invention for traction and transmission of the seedling raising vehicle; Fig.26 It is a structural schematic diagram of the traction device of the seedling raising vehicle of the present invention; Fig. 27 It is a structural schematic diagram of the track of the present invention; Fig.28 It is a structural schematic diagram of the seedling raising vehicle delivery mechanism of the present invention; Fig.29 It is a structural schematic diagram of the driving end of the seedling raising vehicle conveying mechanism of the present invention; Fig.30 Another three-dimensional structural schematic diagram of the driving end of the seedling raising vehicle conveying mechanism of the present invention; Figure numerals: 1-first conveying frame; 2-first conveying belt; 3-first driving shaft; 4-first conveying motor; 5-first spindle mounting plate; 6-first slide rail; 7-first slider bearing seat; 8-first adjusting screw; 9-first motor mounting plate; 10-limiting stop rod; 11-first shifting frame; 12-fixing plate; 13-first hole plate baffle; 14-shifting cylinder; 15-first sliding mounting plate; 16-first telescopic cylinder; 17-shift fork mounting rod; 18-shift fork; 19-frame; 20-second conveying frame; 21-second conveyor belt; 22-second hole plate baffle; 23-pushing transition plate; 24-second driving shaft; 25-second conveying motor; 26-second spindle mounting plate; 27-second slide rail; 28-second slider bearing seat; 29-second adjusting screw; 30-second motor mounting plate; 31-translation frame; 32-first guide rail; 33-first slide; 34-first push motor; 35-translation transmission shaft; 36-gear; 37-rack; 38-first travel switch; 39-lifting frame; 40-second slide; 41-second guide rail; 42-first lifting cylinder; 43-first hole tray push plate; 44-lifting platform; 45-origin detection sheet; 46-first photoelectric sensor; 47-second photoelectric sensor; 48-third guide rail; 49-third slide seat; 50-lifting motor; 51-lifting transmission shaft; 52-driving sprocket; 53-driven sprocket; 54-transmission chain; 55-chain fixing seat; 56-limit baffle; 57-mounting frame; 58-fourth guide rail; 59-fourth slide; 60-pushing frame; 61-support roller; 62-second pushing motor; 63-first driving pulley; 64-first driven pulley; 65-pushing synchronous belt; 66-second travel switch; 67-limit detection piece; 68-second lifting cylinder; 69-second hole tray push plate; 70-anti-warping baffle; 71-flip lap plate; 72-second telescopic cylinder; 73-protective net; 74-first adjustable support foot; 75-second adjustable support foot; 76-third adjustable support foot; 77-track; 7701-bending part; 78-limiting roller; 79-adjusting support seat; 80-second shifting frame; 81-second sliding mounting plate; 82-fifth guide rail; 83-shifting motor; 84-second driving pulley; 85-second driven pulley; 86-shifting synchronous belt; 87-cylindrical pin; 88-shifting block; 89-connecting column; 90-fixing column; 91-tension spring; 92-blocking block; 93-third travel switch; 94-supporting bracket; 95-blocking cylinder; 96-hole tray; 97-seedling vehicle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0026] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] like Figures 1 to 30 As shown together, the present embodiment provides an automatic seedling tray stacking production line, including a multi-layer bed loading machine, a tray conveying and translating device is provided upstream of the multi-layer bed loading machine, and a seedling vehicle traction device is provided downstream of the multi-layer bed loading machine.

[0028] like Figures 1 to 4 As shown together, the cell tray conveying and translation device includes a first cell tray conveying mechanism and a cell tray shifting mechanism, and the cell tray shifting mechanism is located at the unloading end of the first cell tray conveying mechanism. The first cell tray conveying mechanism realizes the conveyance of the cell tray 96, and the cell tray shifting mechanism realizes the orderly shifting of the cell tray 96 conveyed to the unloading end of the first cell tray conveying mechanism.

[0029] In one embodiment, if Figure 4 and Figure 5 As shown together, the first cell tray conveying mechanism includes a first conveying frame 1 on which a first conveying belt 2 driven by a first driving device is wound. The first conveying frame 1 is also provided with a first cell tray guiding channel for guiding the cell tray 96 .

[0030] In one embodiment, if Figure 4 , Figure 5 and Figure 7 As shown together, the first conveying frame 1 is rotatably mounted with a first driving shaft 3, a first guide shaft and a first driven shaft, two first driven shafts are provided and are respectively located at the two ends of the first conveying frame 1, the first guide shaft is located between the two first driven shafts, and two first guide shafts are provided side by side, the first driving shaft 3 is located between the two first guide shafts, and the first driving shaft 3 is located below the first guide shaft, and the first conveyor belt 2 is wound around the first driving shaft 3, the first guide shaft and the first driven shaft; the first driving device includes a first conveying motor 4 installed on the first conveying frame 1, and the output shaft of the first conveying motor 4 is connected to the first driving shaft 3. The first conveying motor 4 works to drive the first driving shaft 3 to rotate, thereby driving the first conveyor belt 2 to operate through the first driving shaft 3, the first guide shaft and the first driven shaft, so as to realize the conveying of the hole tray 96 on the first conveyor belt 2.

[0031] In one embodiment, if Figure 4 , Figure 5 and Figure 7 As shown together, both sides of the first conveying frame 1 are fixedly installed with corresponding first spindle mounting plates 5, and the first slide rail 6 is vertically fixedly installed on the first spindle mounting plate 5, and the first slider bearing seat 7 is slidably installed on the first slide rail 6. The first driving shaft 3 is rotatably installed between the two corresponding first slider bearing seats 7. The first spindle mounting plate 5 is also installed with a first adjusting screw 8, and the end of the first adjusting screw 8 is connected to the first slider bearing seat 7. The first motor mounting plate 9 is fixedly installed on the first adjusting screw 8, and the first conveying motor 4 is fixedly installed on the first motor mounting plate 9, and the output shaft of the first conveying motor 4 is drivingly connected to one end of the first driving shaft 3. The lifting and lowering adjustment of the first driving shaft 3 can be realized by the first adjusting screw 8, and then the tension adjustment of the first conveying belt 2 can be realized, and the adjustment operation is simple and convenient.

[0032] In one embodiment, if Figure 4 and Figure 5 As shown together, a hole tray limiting assembly is provided on the first conveying frame body 1 , and two groups of hole tray limiting assemblies are provided, and the two groups of hole tray limiting assemblies are respectively and correspondingly arranged on two side edges of the first conveying frame body 1 .

[0033] In one embodiment, if Figure 4 and Figure 5 As shown together, the hole tray limiting assembly includes a limiting stopper rod 10, which is fixedly mounted on the first conveying frame 1 through a stopper rod mounting bracket, and the limiting stopper rod 10 is located above the first conveyor belt 2, and a first hole tray guide channel adapted to the hole tray 96 is formed between the two corresponding limiting stopper rods 10. The first hole tray guide channel can realize the guided transportation of the hole tray 96 on the first conveyor belt 2, ensuring that the transported hole tray 96 will not be offset.

[0034] In one embodiment, if Figure 4 and Figure 5 As shown in common, a plurality of baffle rod mounting brackets are provided along the length direction of the limit baffle rod 10, and mounting cross beams are fixedly installed on both sides of the first conveying frame 1. The baffle rod mounting bracket includes a clamping block fixedly installed on the mounting cross beam, and a vertical support shaft is fixedly installed on the clamping block. A transverse support shaft is installed on the top of the vertical support shaft through a cross fixing block, and one end of the transverse support shaft close to the limit baffle rod 10 is fixedly connected to the limit baffle rod 10. The baffle rod mounting bracket provided can realize the adjustment of the limit baffle rod 10, and then realize the adjustment of the first hole tray guide channel. The first hole tray guide channel can be adapted and adjusted according to the specifications of the hole tray 96 to be transported, so as to meet the guiding and conveying requirements of hole trays 96 of different specifications, and has strong versatility.

[0035] In one embodiment, if Figure 4 , Figure 6 and Figure 8 As shown together, the hole tray conveying mechanism includes a first conveying frame 11, on which is fixedly mounted a first hole tray baffle 13 for achieving position limiting blocking of the hole tray 96, the first hole tray baffle 13 is located at the unloading end of the first conveyor belt 2 and is arranged corresponding to the first conveyor belt 2; a first sliding mounting plate 15 driven by a second driving device is horizontally slidably mounted on the first conveying frame 11, the first sliding mounting plate 15 is located above the first conveyor belt 2, and a shift fork 18 driven by a third driving device is rotatably mounted on the first sliding mounting plate 15. After the hole tray 96 is conveyed to the unloading end of the first conveying frame 1, the first hole tray baffle 13 realizes the positioning and blocking of the hole tray 96. Then, the second driving device works to drive the first sliding mounting plate 15 to displace, and the hole tray 96 is delivered through the fork 18. After completing the delivery of one hole tray 96, the third driving device works to drive the delivery end of the fork 18 to rise to the avoidance position to achieve the avoidance of the hole tray 96 when the fork 18 is displaced. At the same time, the second driving device works to drive the first sliding mounting plate 15 to reset. After the first sliding mounting plate 15 is reset, the third driving device works to drive the delivery end of the fork 18 to descend to the delivery position. Then the second driving device works to drive the first sliding mounting plate 15 to displace, so as to deliver the next hole tray 96, thereby achieving orderly delivery of the hole trays 96.

[0036] In one embodiment, if Figure 1 and Figure 2 As shown, an upper shield is fixedly installed on the top of the first conveying frame 11, and the upper shield can protect the hole tray conveying mechanism.

[0037] In one embodiment, if Figure 4 and Figure 6 As shown in common, a fixing plate 12 is fixedly mounted on the first feeding frame 11, and a first strip-shaped mounting hole is opened on the fixing plate 12. The first hole tray baffle 13 is fixedly mounted on the fixing plate 12 by means of a positioning bolt passing through the first strip-shaped mounting hole. The first hole tray baffle 13 can be adjusted by loosening the positioning bolt that fixes the first hole tray baffle 13. After the adjustment is completed, the positioning bolt can be re-tightened. By adjusting the first hole tray baffle 13, it is ensured that the hole tray 96 is effectively positioned and blocked.

[0038] In one embodiment, if Figure 6 and Figure 8 As shown together, the second driving device includes a feeding cylinder 14 fixedly mounted on the top of the first feeding frame 11, the feeding cylinder 14 is arranged along a conveying direction perpendicular to the first cell tray conveying mechanism, and the first sliding mounting plate 15 is fixedly mounted on a slider of the feeding cylinder 14. When the feeding cylinder 14 works, it drives the first sliding mounting plate 15 to move back and forth along its stroke, and the displacement direction of the first sliding mounting plate 15 is the feeding direction of the cell tray 96.

[0039] In one embodiment, if Figure 6 and Figure 8 As shown together, a shift fork mounting rod 17 is fixedly mounted on the first sliding mounting plate 15, and a shift fork 18 is rotatably mounted on the shift fork mounting rod 17, and the shift fork 18 is arranged along the length direction of the shift fork mounting rod 17; the third driving device includes a first telescopic cylinder 16 hingedly mounted on the first sliding mounting plate 15, and the piston shaft end of the first telescopic cylinder 16 is hingedly connected to the connecting end of the shift fork 18. When the first telescopic cylinder 16 works, it can drive the shift fork 18 to move, and realize the conversion of the shift fork 18 between the material shifting position and the avoidance position. When the shift fork 18 is in the material shifting position state, the hole tray 96 can be shifted, and when the shift fork 18 is in the avoidance position state, the hole tray 96 can be avoided.

[0040] In one embodiment, two shift forks 18 are provided, and the two shift forks 18 are respectively located at two ends of the shift fork mounting rod 17 , so as to realize the smooth shifting of the hole tray 96 .

[0041] In one embodiment, if Figure 6 and Figure 8 As shown together, the shift fork 18 includes an integrally formed mounting portion, a connecting end and a shifting end, the mounting portion is located between the connecting end and the shifting end, and the shift fork 18 is rotatably mounted on the shift fork mounting rod 17 through its mounting portion, and the piston shaft end of the first telescopic cylinder 16 is hingedly connected to the connecting end of the shift fork 18. During operation, when the piston shaft of the first telescopic cylinder 16 extends, it drives the shift fork 18 to move, so that the shifting end of the shift fork 18 swings down, at this time, the shift fork 18 is in the shifting position state, and when the piston shaft of the first telescopic cylinder 16 retracts, it drives the shift fork 18 to move, so that the shifting end of the shift fork 18 is lifted, at this time, the shift fork 18 is in the avoidance position state.

[0042] like Figures 1 to 3 ,like Figures 9 to 24As shown in common, the multi-layer bed feeding machine includes a frame 19, on which a second hole tray conveying mechanism, a first hole tray pushing mechanism, a lifting platform 44 and a second hole tray pushing mechanism are provided, the second hole tray conveying mechanism is located downstream of the hole tray feeding mechanism, and the loading end of the second hole tray conveying mechanism extends outside the frame 19 and corresponds to the unloading end of the first hole tray conveying mechanism, the first hole tray pushing mechanism is located above the second hole tray conveying mechanism, and the first hole tray pushing mechanism corresponds to the unloading end of the second hole tray conveying mechanism, the lifting platform 44 is located downstream of the first hole tray pushing mechanism, and the second hole tray pushing mechanism The conveying mechanism is located on the lifting platform 44; the multi-layer bed feeding machine conveys the hole tray 96 to the bottom of the first hole tray pushing mechanism through the second hole tray conveying mechanism and realizes the side-by-side placement of multiple hole trays 96, and realizes the synchronous pushing of multiple hole trays 96 conveyed to the unloading end of the second hole tray conveying mechanism through the first hole tray pushing mechanism, and pushes the hole tray 96 to the lifting platform 44. Through the cooperation of the lifting platform 44 and the second hole tray pushing mechanism, the hole tray 96 on the lifting platform 44 can be pushed to the storage platform of each layer of the seedling vehicle 97, so as to realize the automatic loading of the hole tray 96 on the seedling vehicle 97.

[0043] In one embodiment, if Figures 9 to 12 As shown together, the second hole tray conveying mechanism includes a second conveying frame 20 fixedly mounted on the frame 19, and a second conveyor belt 21 driven by a fourth driving device is mounted on the second conveying frame 20. The second conveyor belt 21 is at the same height as the first conveyor belt 2 or is located below the first conveyor belt 2, so as to facilitate the transfer of the hole tray 96 on the first conveyor belt 2 to the second conveyor belt 21; when the fourth driving device is working, it can drive the second conveyor belt 21 to realize the transportation of the hole tray 96 on the second conveyor belt 21.

[0044] In one embodiment, if Fig.11 and Fig.12 As shown together, a second hole tray baffle 22 is fixedly installed on the second conveying frame 20 to achieve limited blocking of the hole tray 96. The second hole tray baffle 22 is located at the unloading end of the second conveying frame 20 and is arranged corresponding to the second conveyor belt 21; the second hole tray baffle 22 can achieve positioning blocking of the hole tray 96.

[0045] In one embodiment, if Fig.11 and Fig.12 As shown together, a push transition plate 23 is fixedly installed on one side of the second conveying frame 20 close to the lifting platform 44, and the push transition plate 23 is arranged corresponding to the lifting platform 44. When the lifting platform 44 is at the initial height position, that is, when the lifting platform 44 and the second conveyor belt 21 are at the same height position, the conveyor transition plate can cover the gap between the second conveyor belt 21 and the lifting platform 44, ensuring that the hole tray 96 can be smoothly pushed from the second conveyor belt 21 to the lifting platform 44.

[0046] In one embodiment, if Figures 11 to 14 As shown together, the second conveying frame 20 is rotatably mounted with a second driving shaft 24, a second guide shaft and a second driven shaft, two second driven shafts are provided and are respectively located at the two ends of the second conveying frame 20, the second guide shaft is located between the two second driven shafts, and two second guide shafts are provided side by side, the second driving shaft 24 is located between the two second guide shafts, and the second driving shaft 24 is located below the second guide shaft, and the second conveyor belt 21 is wound around the second driving shaft 24, the second guide shaft and the second driven shaft; the fourth driving device includes a second conveying motor 25 installed on the second conveying frame 20, and the output shaft of the second conveying motor 25 is transmission-connected with the second driving shaft 24. When the second conveying motor 25 works, it drives the second driving shaft 24 to rotate, thereby driving the second conveyor belt 21 to operate through the second driving shaft 24, the second guide shaft and the second driven shaft, so as to realize the conveying of the hole tray 96 on the second conveyor belt 21.

[0047] In one embodiment, if Figures 11 to 14 As shown together, the second conveying frame 20 is fixedly mounted with corresponding second spindle mounting plates 26 on both sides, the second spindle mounting plates 26 are vertically fixedly mounted with second slide rails 27, the second slide rails 27 are slidably mounted with second slider bearing seats 28, the second driving shaft 24 is rotatably mounted between the two corresponding second slider bearing seats 28, the second spindle mounting plates 26 are also mounted with second adjusting screws 29, the end of the second adjusting screws 29 is connected to the second slider bearing seats 28, the second adjusting screws 29 are fixedly mounted with second motor mounting plates 30, the second conveying motor 25 is fixedly mounted on the second motor mounting plates 30, and the output shaft of the second conveying motor 25 is drivingly connected with one end of the second driving shaft 24. The lifting and lowering adjustment of the second driving shaft 24 can be realized by the second adjusting screws 29, thereby realizing the tension adjustment of the second conveying belt 21, and the adjustment operation is simple and convenient.

[0048] In one embodiment, if Fig.12 As shown, both ends of the second hole tray baffle 22 are provided with second strip-shaped mounting holes, and the second hole tray baffle 22 is fixedly mounted on the second conveying frame 20 by means of positioning bolts passing through the second strip-shaped mounting holes. The positioning bolts fixing the second hole tray baffle 22 can be loosened to adjust the second hole tray baffle 22. After the adjustment is completed, the positioning bolts can be re-tightened. By adjusting the second hole tray baffle 22, it is ensured that the hole tray 96 is effectively positioned and blocked, so that the hole tray 96 is accurately stopped at the pushing position, which is convenient for the first hole tray pushing mechanism to accurately push the hole tray 96.

[0049] In one embodiment, if Figures 9 to 11 , Fig.15 and Fig.16As shown together, the first cell tray pushing mechanism includes a translation frame 31 slidably mounted on the frame 19 in the horizontal direction and driven by the fifth driving device, a lifting frame 39 driven by the sixth driving device is slidably mounted on the translation frame 31 in the vertical direction, and a first cell tray pushing plate 43 for pushing the cell tray 96 is fixedly mounted at the bottom of the lifting frame 39, and the first cell tray pushing plate 43 is located above the second conveyor belt 21. The sixth driving device can drive the first cell tray pushing plate 43 to move up and down, and the fifth driving device can drive the first cell tray pushing plate 43 to move horizontally.

[0050] In one embodiment, if Fig.11 , Fig.15 and Fig.16 As shown together, in order to realize the sliding installation of the translation frame 31 on the frame 19 and ensure that the translation frame 31 slides smoothly, a first guide rail 32 is fixedly installed on the frame 19 in the horizontal direction, and a first slide seat 33 fixedly connected to the translation frame 31 is slidably installed on the first guide rail 32. The translation frame 31 is slidably installed on the frame 19 through the first guide rail 32 and the first slide seat 33.

[0051] In one embodiment, if Fig.11 , Fig.15 and Fig.16 As shown together, the fifth driving device includes a first push motor 34 fixedly mounted on the translation frame 31, the output shaft of the first push motor 34 is drivingly connected to the translation transmission shaft 35, the translation transmission shaft 35 is rotatably mounted on the translation frame 31, and a gear 36 is mounted on the end of the translation transmission shaft 35, a rack 37 arranged parallel to the first guide rail 32 is fixedly mounted on the frame 19, the gear 36 is arranged correspondingly to the rack 37, and the gear 36 is meshed with the rack 37. When the first push motor 34 works, the gear 36 is driven to rotate through the translation transmission shaft 35, and because the gear 36 is meshed with the rack 37, the gear 36 rotates to drive the translation frame 31 to move, thereby driving the first hole tray push plate 43 to move horizontally.

[0052] In one embodiment, if Fig.11 and Fig.15 As shown together, there are two racks 37, and the translation frame 31 is located between the two racks 37. There are two gears 36, which are respectively mounted on the ends of the translation transmission shaft 35, and the gears 36 are respectively located above the racks 37 and mesh with the racks 37. The gears 36 are respectively located above the racks 37 to support the translation frame 31, and the translation frame 31 is located between the two racks 37, so that the translation frame 31 can be driven smoothly without deviation and shaking.

[0053] In one embodiment, if Fig.11 and Fig.15As shown together, a first travel switch 38 for detecting the translation frame 31 is fixedly installed on the frame 19, and two first travel switches 38 are provided, and the translation frame 31 is located between the two first travel switches 38. The first travel switch 38 can detect the position of the translation frame 31, ensuring that the translation frame 31 can slide smoothly and accurately stop within the set stroke.

[0054] In one embodiment, if Fig.11 , Fig.15 , Fig.16 and Fig.21 As shown together, in order to realize the sliding installation of the lifting frame 39 on the translation frame 31 and ensure the smooth lifting of the lifting frame 39, a second slide 40 is fixedly installed on the translation frame 31, and a second guide rail 41 corresponding to the second slide 40 is vertically fixedly installed on the lifting frame 39. The second guide rail 41 is slidably connected to the second slide 40. The lifting frame 39 is slidably installed on the translation frame 31 through the second guide rail 41 and the second slide 40.

[0055] In one embodiment, if Fig.11 , Fig.15 , Fig.16 and Fig.21 As shown together, the sixth driving device includes a first lifting cylinder 42 hingedly mounted on the translation frame 31, and the piston shaft end of the first lifting cylinder 42 is hingedly connected to the lifting frame 39. The first lifting cylinder 42 works to drive the lifting frame 39 to rise or fall, thereby realizing the lifting and lowering drive of the first hole tray push plate 43.

[0056] In one embodiment, if Fig.11 , Fig.15 and Fig.16 As shown together, two first lifting cylinders 42 are correspondingly provided, and the two first lifting cylinders 42 are respectively located at the two ends of the translation frame 31, so that the lifting and lowering drive of the lifting frame 39 is stable and reliable.

[0057] In one embodiment, if Fig. 9 , Fig.10 , Figures 17 to 19 As shown together, the lifting platform 44 is slidably installed on the frame 19 along the vertical direction and is driven by the seventh driving device. The seventh driving device can drive the lifting platform 44 to rise or fall. The lifting platform 44 is provided with a second hole tray guide channel for realizing the guided transportation of the hole tray 96. The second hole tray guide channel can realize the guided transportation of the hole tray 96 on the lifting platform 44.

[0058] In one embodiment, if Fig.17 and Fig.19As shown together, an origin detection piece 45 is fixedly installed on the frame 19, and a first photoelectric sensor 46 for realizing the detection of the origin detection piece 45 is fixedly installed on the lifting platform 44. When the first photoelectric sensor 46 is in a facing state with the origin detection piece 45, the lifting platform 44 and the second conveyor belt 21 are at the same height; the seventh driving device works to drive the lifting platform 44 to rise or fall, and when the first photoelectric sensor 46 detects the origin detection piece 45, the first photoelectric sensor 46 feeds back the detection signal to the control system, and the control system controls the seventh driving device to stop working. At this time, the lifting platform 44 stops at the initial height position, that is, the lifting platform 44 and the second conveyor belt 21 are at the same height position, and the hole tray 96 on the second conveyor belt 21 can be pushed to the lifting platform 44 by the first hole tray pushing mechanism.

[0059] In one embodiment, if Fig.17 and Fig.19 As shown in common, the lifting platform 44 is also fixedly installed with a second photoelectric sensor 47 for detecting the storage platforms on each layer of the seedling raising vehicle 97 at one end thereof close to the traction device of the seedling raising vehicle 97, and the second photoelectric sensor 47 is located at the bottom of the lifting platform 44. The seventh driving device works to drive the lifting platform 44 to rise or fall. When the lifting platform 44 moves to the set height and the second photoelectric sensor 47 detects the current empty storage platform signal on the seedling raising vehicle 97, the second photoelectric sensor 47 feeds back the detection signal to the control system, and the control system controls the seventh driving device to stop working. At this time, the lifting platform 44 is at the same height as the storage platform where the plug tray 96 is to be placed, and the plug tray 96 on the lifting platform 44 can be pushed to the storage platform of the seedling raising vehicle 97 by the second plug tray pushing mechanism.

[0060] In one embodiment, if Fig.17 and Fig.18 As shown together, in order to realize the sliding installation of the lifting platform 44 on the frame 19 and ensure the smooth lifting of the lifting platform 44, a third guide rail 48 is fixedly installed on the frame 19 along the vertical direction, and a third slide 49 corresponding to the third guide rail 48 is fixedly installed on the lifting platform 44. The third slide 49 is respectively slidably connected to the corresponding third guide rail 48, and the lifting platform 44 is slidably installed on the frame 19 through the third guide rail 48 and the third slide 49.

[0061] In one embodiment, if Figures 1 to 3 , Fig.17 and Fig.18As shown in the figure, the seventh driving device includes a lifting motor 50 fixedly mounted on the top of the frame 19, and a lifting transmission shaft 51 is also rotatably mounted on the top of the frame 19. The output shaft of the lifting motor 50 is connected to one end of the lifting transmission shaft 51, and driving sprockets 52 are installed at both ends of the lifting transmission shaft 51. The bottom of the frame 19 is rotatably mounted with driven sprockets 53 respectively arranged corresponding to the driving sprockets 52, and a transmission chain 54 is wound between the corresponding driven sprockets 53 and the driving sprockets 52, and the driven sprockets 53 are connected to the driving sprockets 52 through the transmission chain 54. Chain fixing seats 55 corresponding to the transmission chain 54 are fixedly mounted on the lifting platform 44, and the lifting platform 44 is fixedly connected to one side of the transmission chain 54 through the chain fixing seat 55. When the lifting motor 50 works, it drives the lifting transmission shaft 51 to rotate, and then drives the lifting platform 44 to rise or fall through the driving sprocket 52, the driven sprocket 53 and the transmission chain 54, so as to realize the displacement of the lifting platform 44 in the vertical direction.

[0062] In one embodiment, if Figures 17 to 19 As shown in the figure, two corresponding limit baffles 56 are fixedly installed in the horizontal direction on the lifting platform 44, and a second plug tray guide channel is formed between the two limit baffles 56. The second plug tray guide channel can guide and limit the plug tray 96, ensure that the plug tray 96 is pushed smoothly, and the plug tray 96 enters the seedling raising vehicle 97 along the predetermined displacement channel.

[0063] In one embodiment, if Fig.17 , Fig.18 , Fig. 20 , Figure 22 to Figure 24 As shown together, the second plug tray pushing mechanism includes a pushing frame 60 that is slidably mounted on the lifting platform 44 along the length direction of the second plug tray guide channel and driven by the eighth driving device. The pushing frame 60 is provided with a second plug tray pushing plate 69 driven by the ninth driving device. The second plug tray pushing plate 69 is fixedly installed with an anti-warping baffle 70 on one side close to the traction device of the seedling raising vehicle, and when the second plug tray pushing plate 69 is lifted to the feeding position, there is a feeding gap between the second plug tray pushing plate 69 and the lifting platform 44 for the plug tray 96 to pass through. The ninth driving device can drive the second plug tray pushing plate 69 to move up and down, and the eighth driving device can drive the second plug tray pushing plate 69 to achieve horizontal displacement along the length direction of the second plug tray guide channel.

[0064] In one embodiment, if Fig.17 , Fig.18 , Fig. 20 , Fig. 22 and Fig.23As shown together, in order to realize the sliding installation of the pushing frame 60 on the lifting platform 44, a mounting frame 57 is fixedly installed on the lifting platform 44, and a fourth guide rail 58 is fixedly installed on the mounting frame 57 along the length direction of the second hole tray guide channel, and a fourth slide 59 is slidably installed on the fourth guide rail 58. One end of the pushing frame 60 close to the mounting frame 57 is fixedly connected to the fourth slide 59, and one end of the pushing frame 60 away from the mounting frame 57 is rotatably installed with a supporting roller 61. The pushing frame 60 is slidably installed on the mounting frame 57 through the fourth guide rail 58 and the fourth slide 59.

[0065] In one embodiment, if Fig.17 , Fig.18 , Fig. 20 , Fig. 22 and Fig.23 As shown together, the eighth driving device includes a second push motor 62 fixedly mounted on the mounting frame 57, a first driving pulley 63 is rotatably mounted on one end of the mounting frame 57, the output shaft of the second push motor 62 is transmission-connected with the first driving pulley 63, a first driven pulley 64 corresponding to the first driving pulley 63 is rotatably mounted on the other end of the mounting frame 57, a push synchronous belt 65 is wound around the first driven pulley 64 and the first driving pulley 63, and the first driven pulley 64 is transmission-connected with the first driving pulley 63 through the push synchronous belt 65, and one end of the push frame 60 close to the mounting frame 57 is fixedly connected to one side of the push synchronous belt 65. When the second push motor 62 works, it drives the first driving pulley 63 to rotate, and then drives the push frame 60 to move through the first driving pulley 63, the first driven pulley 64 and the push synchronous belt 65.

[0066] In one embodiment, if Fig.17 , Fig.18 , Fig. 20 , Fig. 22 and Fig.23 As shown together, a second travel switch 66 is fixedly mounted on the mounting frame 57, two second travel switches 66 are provided, and the two second travel switches 66 are respectively arranged at the two ends of the mounting frame 57, and the push frame 60 is located between the two second travel switches 66, and the push frame 60 is fixedly mounted with limit detection pieces 67 respectively arranged corresponding to the two second travel switches 66. The second travel switch 66 and the limit detection piece 67 can realize the position detection of the push frame 60, ensuring that the push frame 60 can slide smoothly and accurately stop within the set stroke.

[0067] In one embodiment, if Fig.17 , Fig.18 , Fig. 20 and Fig.24As shown together, the ninth driving device includes a second lifting cylinder 68 fixedly mounted on the pushing frame 60, and the piston shaft end of the second lifting cylinder 68 is fixedly connected to the second hole tray push plate 69. The second lifting cylinder 68 works to drive the second hole tray push plate 69 to rise or fall. When the second hole tray push plate 69 falls to the pushing position, the second hole tray push plate 69 can abut one end of the hole tray 96. When the second hole tray push plate 69 moves, the hole tray 96 is pushed. When the second lifting cylinder 68 drives the second hole tray push plate 69 to rise, there is a feeding gap between the second hole tray push plate 69 and the lifting platform 44 for the hole tray 96 to pass through. The next batch of hole trays 96 can be pushed onto the lifting platform 44 through the first hole tray pushing mechanism, and the feeding of the hole trays 96 on the lifting platform 44 is completed.

[0068] In one embodiment, if Fig. 20 and Fig.24 As shown in the figure, a third strip-shaped mounting hole is provided on the anti-warp baffle 70, and the anti-warp baffle 70 is fixedly mounted on the second plug tray push plate 69 by means of a positioning bolt passing through the third strip-shaped mounting hole. With the anti-warp baffle 70, when the second plug tray push plate 69 is lowered to the pushing position, the anti-warp baffle 70 can press the end of the plug tray 96 to prevent the plug tray 96 from warping when the plug tray 96 is pushed. In addition, according to the specifications of the plug tray 96, the positioning bolts fixing the anti-warp baffle 70 can be loosened to adjust the anti-warp baffle 70. After the adjustment is completed, the positioning bolts can be tightened again. Not only is the adjustment operation simple and convenient, but it can also be adapted and adjusted according to plug trays 96 of different specifications, and has strong versatility.

[0069] In one embodiment, if Figures 17 to 19 As shown in common, one end of the lifting platform 44 close to the traction device of the seedling vehicle is also rotatably installed with a flip lap plate 71 driven by the tenth drive device. When the flip lap plate 71 is in the overlapping state, the end of the flip lap plate 71 close to the lifting platform 44 is flush with the lifting platform 44.

[0070] In one embodiment, in order to realize the installation of the flip lap plate 71 on the lifting platform 44, a rotating shaft is rotatably installed at one end of the lifting platform 44 close to the traction device of the seedling vehicle, and the flip lap plate 71 is fixedly connected to the rotating shaft, and the flip lap plate 71 is rotatably installed on the lifting platform 44 through the rotating shaft.

[0071] In one embodiment, if Figures 17 to 19As shown in common, the tenth driving device includes a second telescopic cylinder 72 hingedly mounted on the lifting platform 44, the second telescopic cylinder 72 is located outside the second plug tray guide channel, and the piston shaft end of the second telescopic cylinder 72 is connected to the flip lap plate 71. When the second telescopic cylinder 72 works, it can drive the flip lap plate 71 to flip. When the piston shaft of the second telescopic cylinder 72 extends, it drives the flip lap plate 71 to overlap the seedling raising vehicle 97. When the flip lap plate 71 is overlapped on the storage table of the seedling raising vehicle 97, the flip lap plate 71 can cover the gap between the frame 19 and the seedling raising vehicle 97, ensuring that the plug tray 96 can be smoothly pushed to the seedling raising vehicle 97. After the plug tray 96 is pushed, the piston shaft of the second telescopic cylinder 72 retracts, driving the flip lap plate 71 to reset. The reset flip lap plate 71 can achieve the limit blocking of the plug tray 96 when the next batch of plug trays 96 are pushed to the lifting platform 44, so as to prevent the plug tray 96 from slipping off the lifting platform 44.

[0072] In one embodiment, a hinged connecting plate is fixedly installed at the end of the flip lap plate 71, the piston shaft end of the second telescopic cylinder 72 is hingedly connected to the hinged connecting plate, and an avoidance groove corresponding to the hinged connecting plate is opened on the lifting platform 44, and the avoidance groove realizes the avoidance of the hinged connecting plate.

[0073] In one embodiment, if Figure 1 As shown, a protective net 73 is provided around the rack 19. The protective net 73 can protect the equipment in the rack 19 from interference and damage from the external environment, thereby ensuring the normal operation of the equipment and providing a relatively closed and safe working environment for the equipment.

[0074] In one embodiment, if Figures 1 to 3 , Figures 4 to 6 , Fig. 9 , Fig.10 , Fig.17 and Fig.18 As shown together, the first conveying frame 1 is provided with a first adjusting support foot 74 at the bottom corner, and the height of the first conveying frame 1 can be adjusted by the first adjusting support foot 74; the first shifting frame 11 is provided with a second adjusting support foot 75 at the bottom corner, and the height of the first shifting frame 11 can be adjusted by the second adjusting support foot 75; the bottom corner of the frame 19 is provided with a third adjusting support foot 76, and the height of the frame 19 can be adjusted by the third adjusting support foot 76. By adjusting the height of the first conveying frame 1, the first shifting frame 11 and the frame 19, the first hole tray conveying mechanism, the hole tray shifting mechanism and the second hole tray conveying mechanism can be effectively coordinated, which is convenient for the precise docking of the upstream and downstream processes.

[0075] like Figures 1 to 3 , Figure 25 to Figure 28As shown together, the seedling vehicle traction device includes a track 77, a seedling vehicle conveying mechanism and a seedling vehicle blocking mechanism. Two tracks 77 are correspondingly provided, and a seedling vehicle guide channel compatible with the seedling vehicle 97 is provided between the two tracks 77. The seedling vehicle conveying mechanism is located on one side of the end of one of the tracks 77, and the seedling vehicle blocking mechanism is located at the end of the other track 77.

[0076] In one embodiment, if Figure 25 to Figure 27 As shown together, a plurality of limiting rollers 78 are evenly arranged on the track 77 along its length direction, and the plurality of limiting rollers 78 are respectively located on the opposite side of the two tracks 77, and a seedling raising vehicle guide channel adapted to the seedling raising vehicle 97 is formed between the plurality of limiting rollers 78. The seedling raising vehicle guide channel formed by the plurality of limiting rollers 78 can realize the precise guiding and conveying of the seedling raising vehicle 97, and the limiting rollers 78 are in rolling contact with the seedling raising vehicle 97, and the friction resistance is small, and the seedling raising vehicle 97 will not be worn or scratched.

[0077] In one embodiment, if Figure 25 to Figure 27 As shown in common, several adjusting support seats 79 are provided along its length direction on the track 77. By adjusting the support seats 79, the height adjustment of the track 77 can be realized to satisfy the guided conveying of the seedling raising vehicles 97 of different specifications, and the versatility is strong.

[0078] In one embodiment, if Figure 25 to Figure 27 As shown in the figure, the ends of the track 77 are all provided with an integrally formed bending portion 7701, and a trumpet-shaped seedling raising vehicle guide opening is formed between the bending portions 7701 corresponding to the two tracks 77. The seedling raising vehicle guide opening can guide the seedling raising vehicle 97, ensuring that the seedling raising vehicle 97 can smoothly enter the seedling raising vehicle guide channel.

[0079] In one embodiment, if Figures 25 to 30 As shown together, the seedling carriage conveying mechanism and the seedling carriage blocking mechanism are respectively located at the same-direction ends of the two tracks 77; the seedling carriage conveying mechanism includes a second conveying frame 80 located on one side of the track 77, and a second sliding mounting plate 81 driven by an eleventh driving device is slidably installed on the second conveying frame 80 along the length direction of the guide channel of the seedling carriage, and a shift block 88 is rotatably installed on the second sliding mounting plate 81. The shift block 88 has a conveying end extending to the guide channel of the seedling carriage, and an elastic reset member and a stop block 92 are also provided on the sliding mounting plate. The elastic reset member is connected to the shift block 88, and the stop block 92 is fixedly installed on the second sliding mounting plate 81, and under the action of the elastic reset member, the shift block 88 is set against the stop block 92.

[0080] In one embodiment, if Figures 28 to 30As shown together, a cylindrical pin 87 is fixedly installed on the second sliding mounting plate 81, and a mounting hole compatible with the cylindrical pin 87 is opened in the shift block 88, and the mounting hole is located between the shifting end and the connecting end of the shift block 88, and the shift block 88 is rotatably installed on the second sliding mounting plate 81 through the cylindrical pin 87 and the mounting hole, and a connecting column 89 is fixedly installed on the connecting end of the shift block 88, and a fixed column 90 is also fixedly installed on the second sliding mounting plate 81, and the elastic reset member is a tension spring 91, and the tension spring 91 is located between the connecting column 89 and the fixed column 90, and the two ends of the tension spring 91 are respectively connected to the connecting column 89 and the fixed column 90, and the stop block 92 is located between the connecting end of the shift block 88 and the fixed column 90, and under the action of the tension spring 91, the connecting end of the shift block 88 abuts against the stop block 92. The mounting structure of the shift block 88 is provided so that when the second sliding mounting plate 81 is displaced along the conveying direction of the seedling trolley 97, the connecting end of the shift block 88 abuts against the stop block 92, and the shift block 88 maintains the sending state to realize the sending of the seedling trolley 97, and the seedling trolley 97 is moved. When the second sliding mounting plate 81 is reset, that is, when the second sliding mounting plate 81 is displaced in the direction opposite to the conveying direction of the seedling trolley 97, the shift block 88 can realize automatic swinging to avoid the seedling trolley 97 after contacting the seedling trolley 97, ensuring that the shift block 88 can be reset to the initial position. The setting of the tension spring 91 can always give a force to the shift block 88, ensuring that the shift block 88 can always maintain the sending state of the connecting end abutting against the stop block 92 without being affected by external force.

[0081] In one embodiment, if Figures 28 to 30 As shown together, in order to realize the sliding installation of the second sliding mounting plate 81 on the second conveying frame 80, a fifth guide rail 82 is fixedly installed on the second conveying frame 80 along the length direction of the guide channel of the seedling vehicle, and a fifth slide is slidably installed on the fifth guide rail 82. The fifth slide is fixedly connected to the second sliding mounting plate 81, and the second sliding mounting plate 81 is slidably installed on the second conveying frame 80 through the fifth guide rail 82 and the fifth slide.

[0082] In one embodiment, if Fig.25 , Fig.26 , Figures 28 to 30As shown together, the eleventh driving device includes a transmission motor 83 fixedly mounted on the second transmission frame 80, a second driving pulley 84 is rotatably mounted on one end of the second transmission frame 80, the output shaft of the transmission motor 83 is transmission-connected with the second driving pulley 84, a second driven pulley 85 corresponding to the second driving pulley 84 is rotatably mounted on the other end of the second transmission frame 80, a transmission synchronous belt 86 is wound around the second driven pulley 85 and the second driving pulley 84, the second driven pulley 85 is transmission-connected with the second driving pulley 84 through the transmission synchronous belt 86, and the second sliding mounting plate 81 is fixedly connected with one side of the transmission synchronous belt 86. When the transmission motor 83 works, it drives the second driving pulley 84 to rotate, and the transmission synchronous belt 86 is rotated through the second driving pulley 84 and the second driven pulley 85, thereby driving the second sliding mounting plate 81 to slide and move.

[0083] In one embodiment, if Fig.25 , Fig.26 , Figures 28 to 30 As shown in the figure, the second delivery frame 80 is fixedly mounted with a third travel switch 93 at both ends. The third travel switch 93 can detect the second sliding mounting plate 81, and feed back the detection signal to the control system in real time, and the control system controls the eleventh drive device to work, thereby realizing the orderly delivery of the seedling raising vehicle 97.

[0084] In one embodiment, if Fig.26 , Fig.28 and Fig.29 As shown together, a plurality of supporting brackets 94 are provided below the second feeding frame 80, and the plurality of supporting brackets 94 are arranged along the length direction of the second feeding frame 80, and the second feeding frame 80 is mounted on the supporting brackets 94. Through the supporting brackets 94, the second feeding frame 80 can be supported and height-adjusted, thereby meeting the feeding requirements of seedling raising vehicles 97 of different specifications.

[0085] In one embodiment, if Figure 25 to Figure 27 As shown together, the blocking mechanism of the seedling raising vehicle includes a blocking cylinder 95 , which is fixedly mounted on the track 77 and is arranged near the end of the track 77 .

[0086] The working process of the automatic seedling tray stacking production line is as follows: The first driving device works to drive the first conveyor belt 2 to convey the hole tray 96, and the first hole tray guide channel is used to guide and limit the hole tray 96. After the hole tray 96 is conveyed to the unloading end of the first conveying frame 1, the first hole tray baffle 13 realizes the positioning and blocking of the hole tray 96. Then, the second driving device works to drive the first sliding mounting plate 15 to move, and the hole tray 96 is conveyed to the second conveyor belt 21 through the fork 18. After completing the conveying of one hole tray 96, the third driving device works to drive the fork 18 to move the hole tray 96. The sending end of 18 is lifted to the avoidance position to achieve the avoidance of the hole tray 96 when the fork 18 is displaced. At the same time, the second driving device works to drive the first sliding mounting plate 15 to reset. After the first sliding mounting plate 15 is reset, the third driving device works to drive the sending end of the fork 18 to descend to the sending position. Then the second driving device works to drive the first sliding mounting plate 15 to move to achieve the sending of the next hole tray 96, thereby realizing the automatic transportation and orderly sending of the hole trays 96, and sending the hole trays 96 one by one in an orderly manner to the second conveyor belt 21.

[0087] While the hole tray conveying translation device realizes automatic conveying and orderly delivery of the hole tray 96, the fourth driving device works to drive the second conveyor belt 21 to realize the conveyance of the hole tray 96 on the second conveyor belt 21. After the hole tray 96 is conveyed to the unloading end of the second conveying frame 20, the second hole tray baffle 22 realizes the positioning and blocking of the hole tray 96, and after the next hole tray 96 conveyed abuts against the previous hole tray 96, the previous hole tray 96 realizes the positioning and blocking of the next hole tray 96. In this way, along the conveying direction of the hole tray 96 of the second conveyor belt 21, the hole trays 96 can be arranged side by side in sequence. When the number of arranged hole trays 96 reaches the set value , the sixth driving device works to drive the lifting frame 39 to descend, realizing the downward displacement of the first hole tray push plate 43, and then, the fifth driving device works to drive the translation frame 31 and the lifting frame 39 to displace in the direction close to the lifting platform 44, and realizes the synchronous pushing of multiple hole trays 96 in parallel through the first hole tray push plate 43, and pushes a row of hole trays 96 onto the lifting platform 44, and then, the sixth driving device works to drive the lifting frame 39 to rise and reset, and at the same time, the fifth driving device works to drive the translation frame 31 to reset, thereby realizing the resetting of the first hole tray push plate 43, so as to realize the pushing of the next batch of hole trays 96.

[0088] At the same time as the first plug tray pushing mechanism is reset, the seventh drive device works to drive the lifting platform 44 to rise or descend to the set height, so that the lifting platform 44 and the empty layer storage table currently corresponding to the seedling car 97 are at the same height, and then the tenth drive device works to drive the flip lap plate 71 to be placed on the current storage table, and then the ninth drive device works to drive the second plug tray pushing plate 69 to descend to the pushing position, and finally, the eighth drive device works to drive the pushing frame 60 to move, and under the guidance of the second plug tray guide channel, the plug tray 96 on the lifting platform 44 is pushed to the storage table of the seedling car 97 through the second plug tray pushing plate 69; after completing the loading of the plug tray 96 on one layer of the storage table, the tenth drive device works to drive the flip lap plate 71 to reset, and then the seventh drive device The device works to drive the lifting platform 44 to move to the initial height position. While the lifting platform 44 is reset, the ninth driving device works to drive the second hole tray push plate 69 to rise and reset. The eighth driving device works to drive the pushing frame 60 to reset. When the lifting platform 44 reaches the initial height position, the second hole tray push plate 69 is also reset to the feeding position. At this time, the lifting platform 44 and the second conveyor belt 21 are at the same height, and there is a feeding gap between the second hole tray push plate 69 and the lifting platform 44 for the hole tray 96 to pass through. The next batch of hole trays 96 can be pushed onto the lifting platform 44 through the first hole tray pushing mechanism. Repeat the above steps to push the next batch of hole trays 96 to the next storage table of the seedling raising vehicle 97. This is repeated to realize automatic loading of the hole trays 96 on the seedling raising vehicle 97.

[0089] After the plug tray of a seedling raising vehicle is loaded with materials, the blocking cylinder 95 works to release the blocking state of the current seedling raising vehicle 97. Then, the eleventh driving device works to drive the second sliding mounting plate 81 to move in the opposite direction of the conveying of the seedling raising vehicle 97. The shifting block 88 will automatically avoid the front end of the next seedling raising vehicle 97 when it contacts it. After the shifting block 88 automatically resets, the eleventh driving device works to drive the second sliding mounting plate 81 to move in the length direction of the guide channel of the seedling raising vehicle. The shifting block 88 The next seedling raising cart 97 is pressed against and moved toward the material position on the plug tray. When the previous seedling raising cart 97 filled with plug trays 96 passes the material position on the plug tray, the blocking cylinder 95 is reset to the blocking state to achieve the positioning and blocking of the next seedling raising cart 97. When the next seedling raising cart 97 moves to the material position on the plug tray, the shifting block 88 cooperates with the blocking cylinder 95 to achieve the positioning of the seedling raising cart 97 at the material position on the plug tray, and the plug tray of the next seedling raising cart 97 can be loaded, and this process is repeated.

[0090] The automatic seedling tray stacking production line based on the above structure realizes automatic transportation of the tray 96 through the first tray conveying mechanism, realizes orderly transportation of the tray 96 transported to the unloading end of the first tray conveying mechanism through the tray transfer mechanism, orderly transfers the tray 96 to the second tray conveying mechanism, transports the tray 96 to the bottom of the first tray pushing mechanism through the second tray conveying mechanism and realizes side-by-side placement of multiple trays 96, realizes synchronous pushing of multiple trays 96 transported to the unloading end of the second tray conveying mechanism through the first tray pushing mechanism, pushes the tray 96 to the lifting platform 44, and passes through the lifting platform 44 and the second tray pushing mechanism In coordination, the plug tray 96 on the lifting platform 44 is pushed to the storage tables on each layer of the seedling cart 97 to realize automatic loading of the plug tray 96 on the seedling cart 97, and the automatic delivery of the seedling cart 97 is realized through the coordination of the seedling cart delivery mechanism and the seedling cart blocking mechanism, and the multiple connected seedling carts 97 are orderly delivered to the plug tray loading position. In this way, the automatic transportation of the plug tray 96, the orderly delivery of a single plug tray 96, the synchronous pushing of multiple plug trays 96, the automatic placement of the plug tray 96 on the storage tables on each layer of the seedling cart 97 and the automatic delivery of the seedling cart 97 are realized, thereby realizing the automated assembly line operation of placing the plug trays 96 on the seedling cart 97 in sequence.

[0091] Through the automatic seedling tray stacking production line, the plug trays 96 can be automatically stacked in sequence on each seedling vehicle 97, and the loading operation of the plug trays 96 on the seedling vehicle 97 is efficient and orderly. Compared with the traditional working method of manually carrying and placing the plug trays 96, the degree of automation is high, and the effective replacement of manual labor is achieved. Not only the labor cost is greatly reduced, but also the work efficiency is greatly improved, which meets the use requirements of factory-based seedling cultivation for the turnover transportation of the plug trays 96.

[0092] It should be understood that the purpose of these embodiments is only to illustrate the present invention and is not intended to limit the protection scope of the present invention. In addition, it should also be understood that after reading the technical content of the present invention, those skilled in the art can make various changes, modifications and / or variations to the present invention, and all of these equivalent forms also fall within the protection scope defined by the appended claims of this application.

Claims

1. A seedling tray automatic stacking production line, characterized in that: It comprises a multi-layer bed-entering machine, wherein a plug tray conveying and translating device is provided upstream of the multi-layer bed-entering machine, and a seedling raising vehicle traction device is provided downstream of the multi-layer bed-entering machine; The cell tray conveying and translating device comprises a first cell tray conveying mechanism and a cell tray shifting mechanism, wherein the cell tray shifting mechanism is located at a discharge end of the first cell tray conveying mechanism; The multi-layer bed feeding machine includes a frame, on which a second hole tray conveying mechanism, a first hole tray pushing mechanism, a lifting platform and a second hole tray pushing mechanism are provided, the second hole tray conveying mechanism is located downstream of the hole tray dialing mechanism, and the loading end of the second hole tray conveying mechanism extends outside the frame and corresponds to the unloading end of the first hole tray conveying mechanism, the first hole tray pushing mechanism is located above the second hole tray conveying mechanism, and the first hole tray pushing mechanism corresponds to the unloading end of the second hole tray conveying mechanism, the lifting platform is located downstream of the first hole tray pushing mechanism, and the second hole tray pushing mechanism is located on the lifting platform; The seedling vehicle traction device includes a track, a seedling vehicle driving mechanism and a seedling vehicle blocking mechanism. Two tracks are correspondingly provided, and a seedling vehicle guide channel compatible with the seedling vehicle is provided between the two tracks. The seedling vehicle driving mechanism is located on one side of the end of one of the tracks, and the seedling vehicle blocking mechanism is located at the end of the other track.

2. The automatic seedling tray stacking production line according to claim 1 is characterized in that: The first cell tray conveying mechanism comprises a first conveying frame body, a first conveying belt driven by a first driving device is mounted on the first conveying frame body and wound around the first conveying frame body, and a first cell tray guiding channel for realizing cell tray guided conveying is also provided on the first conveying frame body.

3. The automatic seedling tray stacking production line according to claim 2 is characterized in that: The plug tray conveying mechanism comprises a first conveying frame, on which a first plug tray baffle is fixedly installed for realizing plug tray limit blocking, and the first plug tray baffle is located at the unloading end of the first conveyor belt and is arranged corresponding to the first conveyor belt; A first sliding mounting plate driven by a second driving device is slidably mounted on the first conveying frame in a horizontal direction, the first sliding mounting plate is located above the first conveying belt, and a shifting fork driven by a third driving device is rotatably mounted on the first sliding mounting plate.

4. The automatic seedling tray stacking production line according to claim 3 is characterized in that: The second hole tray conveying mechanism comprises a second conveying frame body fixedly mounted on the frame, a second conveying belt driven by a fourth driving device is wound around the second conveying frame body, and the second conveying belt is at the same height as the first conveying belt or is located below the first conveying belt; A second hole tray baffle for realizing hole tray limit blocking is fixedly installed on the second conveying frame body, the second hole tray baffle is located at the unloading end of the second conveying frame body and is arranged corresponding to the second conveyor belt, and a push transition plate is also fixedly installed on the side of the second conveying frame body close to the lifting platform, and the push transition plate is arranged corresponding to the lifting platform.

5. The automatic seedling tray stacking production line according to claim 4 is characterized in that: The first hole tray pushing mechanism includes a translation frame that is slidably installed on the frame in a horizontal direction and driven by a fifth driving device, and a lifting frame that is slidably installed in a vertical direction on the translation frame and driven by a sixth driving device. A first hole tray pushing plate for pushing the hole tray is fixedly installed at the bottom of the lifting frame, and the first hole tray pushing plate is located above the second conveyor belt.

6. The automatic seedling tray stacking production line according to claim 5, characterized in that: The lifting platform is slidably mounted on the frame in a vertical direction and driven by a seventh driving device, and a second plug tray guide channel for guiding and transporting the plug tray is provided on the lifting platform; An origin detection sheet is fixedly mounted on the frame, and a first photoelectric sensor for realizing detection of the origin detection sheet is fixedly mounted on the lifting platform. When the first photoelectric sensor and the origin detection sheet are in a facing state, the lifting platform and the second conveyor belt are at the same height; A second photoelectric sensor for detecting storage platforms at each level of the seedling raising vehicle is also fixedly installed on one end of the lifting platform close to the traction device of the seedling raising vehicle, and the second photoelectric sensor is located at the bottom of the lifting platform.

7. The automatic seedling tray stacking production line according to claim 6 is characterized in that: The second plug tray pushing mechanism includes a pushing frame which is slidably installed on the lifting platform along the length direction of the second plug tray guide channel and driven by an eighth driving device. The pushing frame is provided with a second plug tray pushing plate driven by a ninth driving device. An anti-warping baffle is fixedly installed on the side of the second plug tray pushing plate close to the traction device of the seedling raising vehicle. When the second plug tray pushing plate is lifted to the feeding position, a feeding gap is provided between the second plug tray pushing plate and the lifting platform for the plug tray to pass through.

8. The automatic seedling tray stacking production line according to claim 7, characterized in that: The end of the lifting platform close to the traction device of the seedling raising vehicle is also rotatably installed with a flip lap plate driven by the tenth driving device. When the flip lap plate is in a lapped state, the end of the flip lap plate close to the lifting platform is flush with the lifting platform.

9. The automatic seedling tray stacking production line according to any one of claims 1 to 8, characterized in that: The seedling raising vehicle transmission mechanism and the seedling raising vehicle blocking mechanism are respectively located at the same direction ends of the two tracks; The seedling car shifting mechanism comprises a second shifting frame body located on one side of the track, a second sliding mounting plate driven by an eleventh driving device is slidably mounted on the second shifting frame body along the length direction of the guide channel of the seedling car, a shifting block is rotatably mounted on the second sliding mounting plate, and the shifting block has a shifting end extending to the guide channel of the seedling car. The sliding mounting plate is also provided with an elastic reset member and a stopper, the elastic reset member is connected to the shifting block, the stopper is fixedly mounted on the second sliding mounting plate, and under the action of the elastic reset member, the shifting block is set against the stopper; The blocking mechanism of the seedling raising vehicle comprises a blocking cylinder, which is fixedly mounted on the track and arranged close to the end of the track.

10. The automatic seedling tray stacking production line according to claim 9, characterized in that: A cylindrical pin is fixedly installed on the second sliding mounting plate, and the shift block is provided with a mounting hole adapted for the cylindrical pin, the mounting hole is located between the shifting end and the connecting end of the shift block, and the shift block is rotatably mounted on the second sliding mounting plate through the cylindrical pin and the mounting hole, a connecting column is fixedly installed on the connecting end of the shift block, and a fixing column is also fixedly installed on the second sliding mounting plate, the elastic reset member is a tension spring, the tension spring is located between the connecting column and the fixing column, and the two ends of the tension spring are respectively connected to the connecting column and the fixing column, the stop block is located between the connecting end of the shift block and the fixing column, and under the action of the tension spring, the connecting end of the shift block abuts against the stop block.

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