Tobacco leaf floating seedling substrate active hole pressing device and control method thereof

Abstract

The invention discloses a tobacco leaf floating seedling substrate active hole pressing device and a control method thereof, and relates to the technical field of tobacco leaf floating seedling. The device comprises a rack, a stock bin and a collecting frame which are distributed up and down are arranged on the rack, a filling piece is arranged at the discharging end of the stock bin, and a conveying mechanism used for clamping and conveying hole trays is arranged on the rack; the hole pressing mechanism comprises a rotating shaft rotationally arranged on the rack, and mounting discs are fixedly arranged at the two ends of the rotating shaft; the hole pressing mechanism is composed of the rotating shaft, the mounting disc, the supporting plate, the mounting shell and other modules, the mounting shell and the supporting plate are matched in an inserted mode and fixed through the fixing part, and the supporting plate and the mounting disc are matched in a clamped mode and fixed through the fixing part, so that the transverse number, transverse spacing and longitudinal spacing arrangement of hole pressing heads can be adjusted; and hole groove matrixes of hole trays with different specifications are accurately matched, so that one-to-one accurate hole pressing of the hole pressing head and the hole grooves is realized, various seedling production requirements can be met, and the universality and the application range of the equipment are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of tobacco floating seedling technology, specifically to an active pressing device for tobacco floating seedling substrate and its control method. Background Technology

[0002] Floating tobacco seedling cultivation is a crucial step in tobacco planting, and the pressing operation directly affects the sowing depth and seed germination environment. Currently, there are two main pressing methods: manual pressing and mechanical pressing rollers. Manual pressing is not only inefficient but also results in inconsistent depths. While mechanical pressing rollers are efficient and provide consistent depths, they have some shortcomings. Existing pressing rollers are typically a single roller with several pressing heads fixed in an array. The roller and pressing heads are an integrated structure. Since the seed tray usually has a large number of slots, and different seed tray sizes (with varying numbers and spacing of slots) result in different mechanical pressing rollers, this integrated structure can only adapt to the seed tray it is compatible with and cannot be flexibly adjusted according to different seed tray sizes. Its versatility is poor, thus reducing its practicality. Therefore, this invention proposes an active pressing device and control method for floating tobacco seedling cultivation substrate to improve this problem. Summary of the Invention

[0003] The purpose of this invention is to solve the problems mentioned above in the background art by providing an active pressing device for tobacco floating seedling substrate and its control method.

[0004] To achieve the above objectives, the present invention specifically adopts the following technical solution: One objective of this invention is to provide an active hole-pressing device for tobacco leaf floating seedling substrate, comprising: The frame is provided with a material bin and a collection frame arranged vertically. The discharge end of the material bin is provided with a filling component. The frame is provided with a transmission mechanism for clamping and transmitting the cavities. The cavitation mechanism includes a rotating shaft rotatably mounted on a frame. Both ends of the rotating shaft are fixedly provided with mounting plates. Several slots are provided on the outer periphery of the mounting plates. Support plates are movably inserted into two corresponding slots on two of the mounting plates. Mounting shells are slidably fitted on the support plates. Cavitation heads are fixed on the mounting shells. Fixing parts for fixing the support plates are provided on the mounting shells. Fixing members for fixing the support plates to the mounting plates are provided on the rotating shaft.

[0005] Furthermore, the fixing part includes a plurality of insertion holes arrayed on the support plate, a sleeve is connected to the mounting shell, an insertion rod that is slidably inserted into the sleeve and engages with the insertion holes, and an abutment spring is connected between the insertion rod and the inner wall of the sleeve.

[0006] Furthermore, the fixing component includes a first bidirectional lead screw, and a cavity is formed inside the rotating shaft. The first bidirectional lead screw rotates coaxially through the rotating shaft. Fixed discs are slidably sleeved at both ends of the rotating shaft. The fixed discs are constructed with rims that fit with the mounting discs. Two through slots communicating with the cavity are formed on the rotating shaft. Connecting blocks are threaded at both ends of the first bidirectional lead screw. The two connecting blocks slide through the two through slots and are fixedly connected to the two fixed discs respectively.

[0007] Furthermore, a number of positioning holes arranged in a ring are provided on one side of the mounting plate, and each of the positioning holes corresponds to a number of slots. Positioning grooves are provided at both ends of the support plate, and positioning rods that are inserted into the positioning grooves and engage with the positioning holes are movably inserted into the positioning grooves. A limit spring is connected between the positioning rods and the inner wall of the positioning grooves.

[0008] Furthermore, the transmission mechanism includes two support plates fixed on the frame, and several support wheels are rotatably arranged on the support plates. A transmission shaft is rotatably passed through both ends of the frame. A connector is provided at both ends of the transmission shaft. The four connectors correspond to each other in pairs. A transmission belt is driven around the corresponding two connectors. The longitudinal cross-section of the transmission belt is L-shaped.

[0009] Furthermore, a second bidirectional lead screw is rotatably mounted on the frame, and movable plates are threaded onto both ends of the second bidirectional lead screw. The transmission shaft is a spline shaft, and the connector is slidably mounted on the transmission shaft. The two corresponding connectors are rotatably connected to the two ends of the movable plates, respectively.

[0010] Furthermore, the filling component includes a scraper disposed at the discharge end of the hopper, and two adjusting plates are movably inserted at the discharge end of the hopper.

[0011] Furthermore, the discharge end of the hopper is rotatably connected to a shaft, and several levers are fixedly arranged on the shaft. The shaft is connected to one of the rotating shafts by a pulley assembly.

[0012] Furthermore, a conveying cylinder is provided on one side of the frame, and the conveying cylinder is connected to the hopper and the collection frame by a first guide cylinder and a second guide cylinder, respectively. A spiral conveying rod is rotatably arranged inside the conveying cylinder.

[0013] The second objective of this invention is to propose a control method for an active pressing device for tobacco leaf floating seedling substrate, comprising the following steps: S1: Several mounting shells are movably fitted onto the support plate. The number of mounting shells is the same as the number of slots in the same horizontal row of the cavity tray. The spacing of the mounting shells is slidably adjusted to correspond to the spacing of the slots in the same horizontal row. The mounting shells are then fixed to the support plate by the fixing part. Several support plates are then inserted into the corresponding slots on the two mounting plates. The spacing between two adjacent support plates corresponds to the spacing of the slots in the same vertical row of the cavity tray. The support plates are then fixed to the two mounting plates by the fixing part. S2: Twist the second bidirectional lead screw to rotate, causing the two movable plates to move closer to each other, thereby adjusting the distance between the two transmission belts so that the distance corresponds to the size of the cavity tray; S3: Slide the two adjusting plates closer together and overlap them to block the discharge end of the hopper and add seedling substrate into the hopper; S4: Place the seedling tray on two conveyor belts, which clamp the tray. As the conveyor belts transport the tray, the two adjusting plates slide away from each other, causing the seedling substrate in the hopper to fall into the slots on the seedling tray. As the tray is transported, a scraper levels the seedling substrate in the slots and scrapes off any excess substrate into the collection box. When the seedling tray is filled with seedling substrate and transported to the pressing mechanism, the shaft rotates, causing several pressing heads to roll one-to-one into the slots on the tray, thus completing the pressing operation.

[0014] The beneficial effects of this invention are as follows: In this invention, the pressing mechanism consists of modules such as a rotating shaft, a mounting plate, a support plate, and a mounting shell. The mounting shell and the support plate are inserted and fixed by a fixing part, and the support plate and the mounting plate are snapped together and fixed by a fixing part. This combination design allows for adjustment of the horizontal number, horizontal spacing, and vertical spacing of the pressing heads, precisely matching the cavity matrix of different specifications of cavity trays. This achieves one-to-one precise pressing of the pressing heads and cavity slots, meeting various seedling production needs and significantly improving the versatility and application range of the equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the present invention; Figure 3 This is another three-dimensional structural sectional view of the present invention; Figure 4 This is a three-dimensional structural diagram of the cavitation mechanism of the present invention; Figure 5 This is a three-dimensional sectional view of the cavitation mechanism of the present invention; Figure 6 This is an exploded three-dimensional view of part of the cavitation mechanism of the present invention; Figure 7 This is a three-dimensional structural diagram of the transmission mechanism of the present invention; Figure 8 This is a three-dimensional sectional view of the transmission mechanism of the present invention; Figure 9 This is the present invention. Figure 2 Enlarged view of point A in the middle; Figure 10 This is the present invention. Figure 5 Enlarged view at point B in the middle; Figure 11 This is the present invention. Figure 5 Enlarged view at point C; and Figure 12 This is the present invention. Figure 5 Enlarged view of point D in the middle.

[0016] Figure label: 1. Rack; 2. Silo; 3. Collection box; 4. Packing components; 401. Scraper; 402. Adjusting plate; 5. Shaft; 6. Transmission mechanism; 601. Support plate; 602. Support roller; 603. Transmission shaft; 604. Connector; 605. Transmission belt; 7. Acupressure mechanism; 701. Rotating shaft; 702. Mounting plate; 703. Slot; 704. Support plate; 705. Mounting shell; 706. Acupressure head; 707. Fixing component; 7071. First bidirectional lead screw; 7072. Cavity; 7073. Fixing plate; 7074. Through slot; 7075. Connecting block; 708. Fixing part; 7081. Insertion hole; 7082. Sleeve; 7083. Insert rod; 7084. Contact spring; 8. Positioning holes; 9. Positioning groove; 10. Positioning rod; 11. Limiting spring; 12. Second double-acting lead screw; 13. Movable board; 14. Lever; 15. Pulley assembly; 16. Conveyor cylinder; 17. First feed cylinder; 18. Second feed cylinder; 19. Screw conveyor rod. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-12 As shown, the active pressing device for tobacco leaf floating seedling substrate proposed in some embodiments of the present invention includes: The frame 1 has a material bin 2 and a collection frame 3 arranged vertically. The discharge end of the material bin 2 is equipped with a filling component 4. The frame 1 is equipped with a transmission mechanism 6 for clamping and transmitting the seedling trays. The material bin 2 is used to store the seedling substrate. By setting the transmission mechanism 6, it can not only transmit the seedling trays, but also clamp and limit the seedling trays during the transmission process to prevent them from deviating from the transmission direction. When the seedling trays are transmitted to the bottom of the material bin 2, the filling component 4 fills the seedling substrate in the material bin 2 into several holes on the seedling trays. The collection frame 3 is used to collect the seedling substrate that falls off during filling or when the seedling trays are pressed, so as to facilitate its recycling. The cavitation mechanism 7 includes a rotating shaft 701 rotatably mounted on a frame 1. Preferably, one end of the rotating shaft 701 is connected to a motor mounted on the frame 1. The motor performs work, and its output shaft drives the rotating shaft 701 to rotate. Both ends of the rotating shaft 701 are fixedly provided with mounting plates 702. Several slots 703 are opened on the outer periphery of the mounting plates 702. The slots 703 are arranged in a circular array. Support plates 704 are movably inserted into two corresponding slots 703 on two mounting plates 702. Mounting shells are slidably sleeved on the support plates 704. 705, a pressure head 706 is fixedly mounted on the mounting shell 705, and a fixing part 708 is provided on the mounting shell 705 for fixing to the support plate 704. A fixing member 707 is provided on the rotating shaft 701 for fixing the support plate 704 to the mounting plate 702. In actual use, according to the specifications of the mounting plate (refer to the number of grooves in the same horizontal row of the mounting plate), an equal number of mounting shells 705 are used, and several mounting shells 705 are slidably mounted on the same support plate 704 in sequence, so that the pressure head 706 on the same support plate 704 is fixed to the support plate 704. The number of slots in the same horizontal row corresponds to the number of slots in the same horizontal row. Then, the distance between two adjacent mounting plates 702 is adjusted to correspond to the distance between the slots in the same horizontal row. The mounting shell 705 is then fixed to the support plate 704 by the fixing part 708. Then, according to the specifications of the cavity tray (refer to the distance between the slots in the same vertical row of the cavity tray), several support plates 704 are inserted into the corresponding slots 703 on the two mounting plates 702, and the distance between two adjacent support plates 704 corresponds to the distance between the slots in the same vertical row of the cavity tray. Finally, the support plates 704 are fixed by the fixing part 707. 04 is fixed to two mounting plates 702, so that when the transmission mechanism 6 transmits the cavity plate past the pressure mechanism 7, the motor drives the rotating shaft 701 to rotate, thereby driving several support plates 704 to rotate around the rotating shaft 701. The several support plates 704 correspond to several rows of cavity slots on the cavity plate, and several pressure heads 706 on the same support plate 704 correspond to several cavity slots in the same row, so that the several pressure heads 706 sequentially roll one-to-one on the cavity slots on the cavity plate, thereby completing the pressure operation. In this design, the pressing mechanism 7 consists of modules such as a rotating shaft 701, a mounting plate 702, a support plate 704, and a mounting shell 705. The mounting shell 705 is inserted into the support plate 704 and fixed by the fixing part 708. The support plate 704 is snapped into the mounting plate 702 and fixed by the fixing part 707. This combination design allows for adjustment of the horizontal number, horizontal spacing, and vertical spacing of the pressing heads 706, precisely matching the cavity matrix of different specifications of seed trays. This achieves one-to-one precise pressing of the pressing heads 706 and the cavity, meeting various seedling production needs and significantly improving the versatility and application range of the equipment.

[0022] like Figure 10The specific structure of the fixing part 708 of the present invention is disclosed. The fixing part 708 includes a plurality of insertion holes 7081 arrayed on the support plate 704. A sleeve 7082 is connected to the mounting shell 705. An insertion rod 7083 that is inserted into the sleeve 7082 and engages with the insertion holes 7081 is slidably inserted. An anti-spring 7084 is connected between the insertion rod 7083 and the inner wall of the sleeve 7082. Preferably, a limiting plate fixed to the insertion rod 7083 is slidably inserted into the sleeve 7082. The anti-spring 7084 is movably sleeved on the insertion rod 7083 and located between the limiting plate and the inner wall of the sleeve 7082. When the mounting shell 705 is fitted, the insertion rod 7083 is first pulled to retract into the sleeve 7082, so that the insertion rod 7083... The limiting plate on 083 presses against the abutment spring 7084, and then the mounting shell 705 slides onto the support plate 704. When the sliding mounting shell 705 aligns with the insertion hole 7081, the insertion rod 7083 is loosened. Under the elastic force of the abutment spring 7084, the insertion rod 7083 is inserted into the corresponding insertion hole 7081, thereby fixing the mounting shell 705 to the support plate 704. The fixing or unfixing method is relatively simple and convenient. In actual use, the number of mounting shells 705 can be increased or decreased according to the number of grooves in the same horizontal row of the cavities, and the spacing of the mounting shells 705 can be adjusted by sliding, so that the number and position of the pressing head 706 on the same support plate 704 correspond to the number and position of the grooves in the same horizontal row of the cavities.

[0023] like Figure 11 and Figure 12The specific structure of the fastener 707 of the present invention is disclosed. The fastener 707 includes a first bidirectional lead screw 7071, a cavity 7072 is formed inside the rotating shaft 701, the first bidirectional lead screw 7071 rotates coaxially through the rotating shaft 701, and fixed plates 7073 are slidably sleeved at both ends of the rotating shaft 701. The fixed plates 7073 are constructed with a frame that fits into the mounting plate 702. The rotating shaft 701 has two through slots 7074 communicating with the cavity 7072. Connecting blocks 7075 are threadedly sleeved at both ends of the first bidirectional lead screw 7071. The two connecting blocks 7075 slide through the two through slots 7074 and are fixedly connected to the two fixed plates 7073 respectively. After the number of mounting shells 705 on the support plate 704 is determined and fixed, the two ends of the support plate 704 are respectively inserted into the two mounting plates 702 corresponding to each other. Within the two slots 703, since there are multiple slots 703 arranged in a circular array, the spacing between two adjacent support plates 704 can be adjusted to match the longitudinal spacing of the cavity tray. After several support plates 704 are installed, the first bidirectional screw 7071 is turned, and under the action of the bidirectional screw, the two connecting blocks 7075 are moved closer, thereby causing the two fixing plates 7073 to move closer to each other. Since the fixing plate 7073 has a frame, when the fixing plate 7073 overlaps with the mounting plate 702, the frame is just fastened to the outer edge of the mounting plate 702, thereby simultaneously fixing several support plates 704. The method of simultaneous fixing or simultaneous unfixing is relatively simple and convenient, requiring only the turning of the first bidirectional screw 7071, thus improving practicality.

[0024] like Figure 6 and Figure 11As shown, a further technical solution for fixing the support plate 704 is disclosed in this invention. A plurality of annularly distributed positioning holes 8 are provided on one side of the mounting plate 702, each corresponding to a plurality of slots 703. Positioning grooves 9 are provided at both ends of the support plate 704. Positioning rods 10, which engage with the positioning holes 8, are movably inserted into the positioning grooves 9. Limiting springs 11 connect the positioning rods 10 to the inner wall of the positioning grooves 9. Since the support plates 704 are fixed synchronously and are annularly distributed, to make the solution more reasonable, the positioning holes 8 are hemispherical with a transition arc at the opening. The end of the positioning rod 10 is hemispherical. In the initial state, under the elastic force of the limiting springs 11, the spherical end of the positioning rod 10 protrudes out for positioning. When the support plate 704 is engaged, the spherical end of the positioning rod 10 will first abut against the side of the mounting plate 702. Under the action of the abutment force, the positioning rod 10 will retract into the positioning groove 9. When the support plate 704 is fully engaged in the slot 703, the positioning rod 10 corresponds to the positioning hole 8. Under the elastic force of the limit spring 11, the spherical end of the positioning rod 10 is inserted into the positioning hole 8, which can temporarily fix the support plate 704, making it convenient to fix it uniformly after all the support plates 704 are installed. Since the end of the positioning rod 10 is hemispherical and the positioning hole 8 is also hemispherical, when it is necessary to remove the support plate 704, a little force can be applied to disengage the positioning rod 10 from the positioning hole 8 and remove the support plate 704, thereby further improving the convenience of installation and fixation.

[0025] like Figure 7 and Figure 8The specific structure of the transmission mechanism 6 of the present invention is disclosed. The transmission mechanism 6 includes two support plates 601 fixed on the frame 1. Several support wheels 602 are rotatably arranged on the support plates 601. Transmission shafts 603 are rotatably passed through both ends of the frame 1. Connectors 604 are provided at both ends of the transmission shafts 603. The four connectors 604 correspond to each other in pairs. A transmission belt 605 is wound around the corresponding two connectors 604. The longitudinal section of the transmission belt 605 is L-shaped. Preferably, a motor is connected to one end of one of the transmission shafts 603, which is mounted on the frame 1. The motor performs work, and its output shaft drives the transmission shaft 603 to rotate, thereby driving the transmission belt 605 to transmit. When placing the seedling trays, the trays are placed between two conveyor belts 605. Since the longitudinal section of the conveyor belts 605 is L-shaped, the two ends of the seedling trays are placed on the transverse sections of the conveyor belts 605. The conveyor belts 605 are made of rubber, and their vertical sections clamp the seedling trays. When the conveyor belts 605 are transporting, they can clamp and transport the seedling trays to prevent them from shifting in the non-transport direction. When placing the seedling trays, the bottom of the seedling trays overlaps with the support rollers 602. The support rollers 602 and the support plates 601 support the seedling trays and bear the weight. The conveyor belts 605 apply transmission stress to ensure stable transport of the seedling trays. This ensures that the seedling trays remain in a horizontal transport state when filling the seedling substrate and pressing the seedlings into holes, thereby ensuring the quality of pressing the seedlings into holes.

[0026] like Figure 8 As shown, a further technical solution for the transmission of acupuncture points according to the present invention is disclosed. A second bidirectional lead screw 12 is rotatably mounted on the frame 1. Both ends of the second bidirectional lead screw 12 are threaded with movable plates 13. The transmission shaft 603 is a splined shaft, and the connector 604 is slidably mounted on the transmission shaft 603. The two corresponding connectors 604 are rotatably connected to the two ends of the movable plates 13, respectively. Preferably, the movable plates 13 are U-shaped plates, and the two corresponding connectors 604 are rotatably connected to the two ends of the movable plates 13. Twisting the second bidirectional lead screw 12 rotates it, and under the action of the bidirectional thread, it drives the two movable plates 13 to move synchronously in opposite directions, thereby driving the connectors 604. The distance between the two conveyor belts 605 can be adjusted by sliding along the transmission shaft 603 to accommodate seedling trays of different sizes. The connector 604 is splined with the transmission shaft 603, so that after the connector 604 is adjusted by sliding, the transmission shaft 603 can drive the connector 604 to rotate synchronously, thereby driving the transmission belt 605 to transmit. Preferably, in order to make the solution more reasonable, a corrugated hose is movably sleeved on the second bidirectional screw 12. Without affecting its rotation and the movement of the movable plate 13, the second bidirectional screw 12 can be hidden and protected to avoid being affected by falling seedling substrate, and to ensure the stability of the transmission cooperation between the second bidirectional screw 12 and the movable plate 13.

[0027] like Figure 3As shown, the specific structure of the filling component 4 of the present invention is disclosed. The filling component 4 includes a scraper 401 disposed at the discharge end of the hopper 2. Two adjusting plates 402 are movably inserted at the discharge end of the hopper 2. Preferably, in order to make the scheme more reasonable, the two adjusting plates 402 slide through the inner wall of the discharge end of the hopper 2 on opposite sides. After the two adjusting plates 402 overlap, they can block the discharge end of the hopper 2. Sliding the two adjusting plates 402 away allows for discharge. The scraper 401 is made of rubber and has a V-shaped structure and is horizontally fixed at the bottom of the hopper 2. Its bottom end abuts against the top of the seedling tray. Adjusting the distance between the two adjusting plates 402 can meet the feeding of seedling trays of different widths. When the seedling substrate falls downward, it will fall onto the seedling tray and fill the seedling slot. As the seedling tray is transported, the scraper 401 overlaps with the top of the seedling tray, thereby leveling the seedling substrate in the seedling slot and scraping off the excess seedling substrate into the collection frame 3 below, thereby achieving the filling function.

[0028] like Figure 3 and Figure 9 As shown, the present invention discloses a further technical solution for filling seedling substrate in seedling trays. A shaft 5 is rotatably inserted through the discharge end of the hopper 2. Several levers 14 are fixedly arranged in an array on the shaft 5. A pulley assembly 15 is connected to one of the rotating shafts 701 on the shaft 5. Since the seedling substrate is temporarily stored in the hopper 2 for batch continuous filling, the seedling substrate will be compressed against each other. The seedling substrate at the bottom of the hopper 2 is easily compacted and clumps due to the weight of the upper substrate, which can cause blockages in severe cases. By setting the shaft 5 and fixing the levers 14 in an array on it, when the conveyor belt 605 transmits, the shaft 5 rotates synchronously under the linkage of the pulley assembly 15. The levers 14 disturb the seedling substrate at the bottom layer, effectively breaking up substrate clumps, ensuring smooth substrate flow, avoiding blockage at the discharge port, and making the substrate more evenly distributed when falling into the seedling trays, further improving the quality of seedling tray filling.

[0029] like Figure 3As shown, this invention discloses a further technical solution for filling seedling substrate into plug trays. A conveying cylinder 16 is provided on one side of the frame 1. The conveying cylinder 16 is connected to a first guide cylinder 17 and a second guide cylinder 18, respectively, via a material hopper 2 and a collection frame 3. A spiral conveying rod 19 is rotatably installed inside the conveying cylinder 16. To ensure filling quality, the feed rate is usually greater than the filling rate, and then a scraper 401 is used to level the substrate and scrape off excess seedling substrate. Therefore, the amount of seedling substrate collected in the collection frame 3 gradually increases. By setting up the conveying cylinder 16, the collection... The seedling substrate collected in frame 3 will enter the conveying cylinder 16 through the second guide cylinder 18. Preferably, the top of the spiral conveying rod 19 is connected to a motor installed on the conveying cylinder 16. When the motor does work, its output shaft drives the spiral conveying rod 19 to rotate. The spiral blades on it will push the seedling substrate upward along the conveying cylinder 16, and then return to the hopper 2 through the first guide cylinder 17, forming a circulation system. This significantly reduces substrate waste, lowers production costs, and enables automatic recycling and reuse of the substrate, reducing manual intervention and thus improving practicality.

[0030] The control method for the active pressing hole device of tobacco leaf floating seedling substrate includes the following steps: S1: Several mounting shells 705 are movably fitted onto the support plate 704. The number of mounting shells 705 is the same as the number of slots in the same horizontal row of the cavity tray. The spacing of the mounting shells 705 is slidably adjusted to correspond to the spacing of the slots in the same horizontal row. The mounting shells 705 are then fixed to the support plate 704 by the fixing part 708. Several support plates 704 are then inserted into the corresponding slots 703 on the two mounting plates 702. The spacing between two adjacent support plates 704 corresponds to the spacing of the slots in the same vertical row of the cavity tray. The support plates 704 are then fixed to the two mounting plates 702 by the fixing part 707. S2: Twist the second bidirectional lead screw 12 to rotate, causing the two movable plates 13 to move closer to each other, thereby adjusting the spacing between the two transmission belts 605 so that the spacing corresponds to the size of the cavity tray; S3: Slide the two adjusting plates 402 closer together and overlap them to block the discharge end of the hopper 2 and add seedling substrate into the hopper 2; S4: The seedling tray is placed on two conveyor belts 605, which clamp the seedling tray. As the two conveyor belts 605 transport the seedling tray, the two adjusting plates 402 slide away from each other, and the seedling substrate in the hopper 2 falls into the seedling slots on the seedling tray. As the seedling tray is transported, the scraper 401 scrapes the seedling substrate in the seedling slots to level it and scrapes off the excess seedling substrate into the collection frame 3. When the seedling tray is filled with seedling substrate and transported to the bottom of the pressing mechanism 7, the rotating shaft 701 rotates, so that several pressing heads 706 roll one-to-one on the seedling slots on the seedling tray in turn, thereby completing the pressing operation.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tobacco seedling floating culture substrate active hole pressing device, characterized in that, include: A frame (1) is provided with a hopper (2) and a collection frame (3) arranged vertically. The discharge end of the hopper (2) is provided with a filling component (4). A transmission mechanism (6) for clamping and transmitting the cavities is provided on the frame (1). The cavitation mechanism (7) includes a rotating shaft (701) rotatably mounted on a frame (1). Both ends of the rotating shaft (701) are fixedly provided with mounting plates (702). Several slots (703) are opened on the outer periphery of the mounting plates (702). Support plates (704) are movably inserted into the two corresponding slots (703) on the two mounting plates (702). Mounting shells (705) are slidably mounted on the support plates (704). Cavitation heads (706) are fixedly provided on the mounting shells (705). Fixing parts (708) for fixing to the support plates (704) are provided on the mounting shells (705). Fixing members (707) for fixing the support plates (704) to the mounting plates (702) are provided on the rotating shaft (701).

2. The tobacco seedling floating culture substrate active hole pressing device according to claim 1, characterized in that, The fixing part (708) includes a plurality of insertion holes (7081) arrayed on the support plate (704). A sleeve (7082) is connected to the mounting shell (705). A plug rod (7083) that is inserted into the sleeve (7082) and engages with the insertion hole (7081) is slidably inserted therein. An anti-spring (7084) is connected between the plug rod (7083) and the inner wall of the sleeve (7082).

3. The tobacco seedling floating culture substrate active hole pressing device according to claim 1, characterized in that, The fixing component (707) includes a first bidirectional lead screw (7071), and a cavity (7072) is provided inside the rotating shaft (701). The first bidirectional lead screw (7071) rotates coaxially through the rotating shaft (701). Fixed discs (7073) are slidably sleeved at both ends of the rotating shaft (701). The fixed discs (7073) are constructed with a frame that fits into the mounting disc (702). Two through slots (7074) communicating with the cavity (7072) are provided on the rotating shaft (701). Connecting blocks (7075) are threadedly sleeved at both ends of the first bidirectional lead screw (7071). The two connecting blocks (7075) slide through the two through slots (7074) respectively and are fixedly connected to the two fixed discs (7073) respectively.

4. The tobacco seedling floating culture substrate active hole pressing device according to claim 1, characterized in that, The mounting plate (702) has several positioning holes (8) arranged in a ring on one side. Each of the positioning holes (8) corresponds to a number of slots (703). The support plate (704) has positioning grooves (9) at both ends. A positioning rod (10) that is inserted into the positioning groove (9) and engages with the positioning hole (8) is movably inserted into the positioning groove (9). A limit spring (11) is connected between the positioning rod (10) and the inner wall of the positioning groove (9).

5. The tobacco seedling floating culture substrate active hole pressing device according to claim 1, characterized in that, The transmission mechanism (6) comprises two supporting plates (601) fixed on the rack (1), a plurality of supporting wheels (602) are rotationally arranged on the supporting plates (601), transmission shafts (603) are rotationally penetrated at two ends of the rack (1), connecting heads (604) are arranged at two ends of the transmission shafts (603), four connecting heads (604) are in pairs, transmission belts (605) are rotationally arranged on the corresponding two connecting heads (604), and the longitudinal section of the transmission belt (605) is L-shaped.

6. The tobacco seedling floating culture substrate active hole pressing device according to claim 5, characterized in that, The second bidirectional screw rod (12) is rotationally arranged on the rack (1), the movable plates (13) are threadedly sleeved at two ends of the second bidirectional screw rod (12), the transmission shafts (603) are spline shafts, the connecting heads (604) are slidingly sleeved on the transmission shafts (603), and the corresponding two connecting heads (604) are rotationally connected with two ends of the movable plates (13) respectively.

7. The tobacco seedling floating culture substrate active hole pressing device according to claim 1, characterized in that, The filler (4) comprises a scraper (401) arranged at the discharging end of the hopper (2), and the discharging end of the hopper (2) movably inserts two adjusting plates (402).

8. The tobacco seedling floating culture substrate active hole pressing device according to claim 1, characterized in that, The shaft rod (5) is rotationally penetrated at the discharging end of the hopper (2), a plurality of shifting rods (14) are arrayed and fixed on the shaft rod (5), and the shaft rod (5) is connected with the one rotary shaft (701) through the belt pulley assembly (15).

9. The tobacco seedling floating culture substrate active hole pressing device according to claim 1, characterized in that, One side of the rack (1) is provided with a conveying cylinder (16), the conveying cylinder (16) is in communication with the hopper (2) and the collecting frame (3) through the first material guide cylinder (17) and the second material guide cylinder (18), and the screw conveying rod (19) is rotationally arranged in the conveying cylinder (16).

10. A method of controlling a tobacco seedling floating culture substrate active hole pressing device, characterized in that, The following steps are included: S1: a plurality of mounting shells (705) are movably sleeved on the supporting plate (704), the number of the mounting shells (705) is the same as the number of the hole slots in the same row of the plug tray, the spacing of the mounting shells (705) is adjusted, the mounting shells (705) are fixed on the supporting plate (704) through the fixing part (708), the plurality of supporting plates (704) are inserted into the corresponding clamping grooves (703) of the two mounting discs (702), the spacing of the adjacent two supporting plates (704) corresponds to the spacing of the hole slots in the same column of the plug tray, and the supporting plates (704) are fixed on the two mounting discs (702) through the fixing part (707); S2: the second bidirectional screw rod (12) is twisted to rotate, the two movable plates (13) are driven to move close to each other, the spacing of the two transmission belts (605) is adjusted, and the spacing corresponds to the size of the plug tray; S3: the two adjusting plates (402) are slid to move close to each other and overlap, the discharging end of the hopper (2) is blocked, and the nursery substrate is added into the hopper (2). S4: Place the plug tray on two transmission belts (605), the two transmission belts (605) clamp the plug tray, and the two transmission belts (605) drive the plug tray to move when transmitting. Slide the two adjusting plates (402) away from each other, and the seedling substrate in the hopper (2) falls into the hole groove on the plug tray. With the transmission of the plug tray, the scraper (401) scrapes the seedling substrate in the hole groove and brushes off the excess seedling substrate to fall into the collection frame (3). When the plug tray is filled with seedling substrate and is transmitted to the bottom of the hole pressing mechanism (7), the rotating shaft (701) rotates, so that the plurality of hole pressing heads (706) press the hole groove on the plug tray one by one, thereby completing the hole pressing operation.

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