Seedling tray drilling equipment for agricultural machinery

Abstract

The invention relates to the technical field of drilling equipment, in particular to seedling tray drilling equipment for agricultural machinery, which comprises a frame body, an electric push rod is fixedly connected to the side wall of the frame body, the telescopic end of the electric push rod is fixedly connected with a limiting plate, and the limiting plate is slidably connected with a seedling tray placing area in the frame body; the first punching mechanism is in bolted connection with the inner side wall of the frame body, the second punching mechanism is fixedly connected to the top of the frame body, grinding and impacting are carried out in the punching process, the multiple functions of punching, grinding, impacting and the like are integrated, the processing time of the seedling raising plate is saved, and the seedling raising plate is prevented from being transferred to other processing areas; the first punching mechanism is responsible for punching a first groove in the seedling raising plate, the second punching mechanism can complete cavity grinding and inner wall roughening treatment, and different treatment requirements for the seedling raising plate in the seedling raising process are met.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and specifically to a seedling tray drilling equipment for agricultural machinery. Background Art

[0002] A patent with the publication (announcement) number of CN119278718B discloses a seedling tray drilling equipment for agricultural machinery, including a base. A bracket is provided on the base. A support table is provided on one side of the base, and a placement groove for placing a seedling tray is provided on the other side. A bottom plate is connected to the support table by screws, and a plurality of positioning columns matching the seedling tray are fixed on the bottom plate. A linear displacement mechanism is provided on the upper part of the bracket and is connected to a sliding seat through the linear displacement mechanism. The linear displacement mechanism can drive the sliding seat to move back and forth above the support table and the placement groove; two first cylinders are connected to the bottom surface of the sliding seat, and the telescopic ends of the two first cylinders are connected to a lifting plate.

[0003] When drilling in the above-mentioned prior art, the first motor is started to drive the longitudinal rod to rotate. The longitudinal rod drives all the cross rods to rotate through the cooperation of the fourth bevel gear and the third bevel gear. The cross rods drive all the rotating shafts to rotate through the cooperation of the second bevel gear and the first bevel gear, so as to drive all the drill rods to rotate, so as to drill the seedling holding part of the seedling tray at the same time. It can only drill the seedling holding part and does not perform other treatments on the seedling tray. Summary of the Invention

[0004] Therefore, in order to solve the above deficiencies, the present invention provides a seedling tray drilling equipment for agricultural machinery here.

[0005] The present invention is implemented as follows. A seedling tray drilling equipment for agricultural machinery is constructed. The device includes a frame body. A telescopic electric push rod is fixedly connected to the side wall of the frame body. The telescopic end of the electric push rod is fixedly connected to a limiting plate, and the limiting plate is slidably connected to the area for placing the seedling tray inside the frame body; a first drilling mechanism is bolted to the inner side wall of the frame body, and a second drilling mechanism is fixedly connected to the top of the frame body; the second drilling mechanism includes a second electric push rod. The top of the second electric push rod is bolted to the top of the frame body. The telescopic end of the second electric push rod is fixedly connected to a receiving frame. A sliding plate is slidably connected inside the receiving frame. A third electric push rod is bolted to the top area of the receiving frame. The telescopic end of the third electric push rod penetrates into the receiving frame and is bolted to the top of the sliding plate. A transmission mechanism is provided on the receiving frame; one end of the connecting seat is fixedly connected to the side wall of the receiving frame.

[0006] Preferably, the transmission mechanism includes a driving motor, which is bolted to the connecting seat. The output shaft of the driving motor is fixedly connected to the worm of the worm and gear mechanism. The worm wheel of the worm and gear mechanism is fixedly connected to the center of the bevel gear at the upper end of the bevel gear set. The bevel gear set is rotatably connected to the connecting seat. The center of the bevel gear below the bevel gear set is fixedly connected to the side wall of the upper end of the driving shaft. An air delivery pipe is fixedly connected inside the driving shaft. The upper end of the air delivery pipe is rotatably connected to one end of the electromagnetic valve. The electromagnetic valve is fixedly connected to the bottom of the receiving frame and communicates with the lower space inside the receiving frame. The bottom of the driving shaft is fixedly connected to the punching head.

[0007] Preferably, a chute frame is embedded in the side wall of the lower end of the driving shaft. A sliding sleeve is slidably connected inside the chute frame. The inner side wall of the sliding sleeve is slidably matched with one end of the driving link. The driving link is rotatably connected to the top of the punching head. The other end of the driving link is fixedly connected to the arc-shaped grinding knife.

[0008] The effect is that the arc-shaped grinding knife grinds the inner wall of the punching area of the seedling tray into a cavity, and the cavity facilitates the subsequent placement of the non-woven fabric, avoiding the direct placement of the non-woven fabric at the inner bottom of the seedling tray.

[0009] Preferably, a telescopic reset rod is fixedly connected inside the driving shaft. The moving end of the telescopic reset rod is fixedly connected to the permanent magnet. The bottom of the permanent magnet is fixedly connected to the receiving rod. An elastic rope is fixedly connected to the side wall of the receiving rod. The other end of the elastic rope is fixedly connected to the impact ball. The impact ball is inserted into the through hole provided on the surface of the driving shaft.

[0010] Preferably, an electromagnet is provided at the bottom of the receiving frame. When the electromagnet is energized, it is repelled by the permanent magnet and pushes the permanent magnet downward.

[0011] The effect is that an electromagnet is provided at the bottom of the receiving frame. When the electromagnet is energized, it is repelled by the permanent magnet and pushes the permanent magnet downward. When the electromagnet is powered off, the telescopic reset rod drives the permanent magnet to move upward and reset, so that the permanent magnet drives the impact ball to move and reset to above the through hole through the receiving rod.

[0012] Preferably, the worms on multiple sets of worm and gear mechanisms are integrated, so that the driving motor simultaneously drives multiple sets of worm and gear mechanisms to drive multiple sets of bevel gear sets to rotate.

[0013] Preferably, the first punching mechanism includes a first linear driver. The first linear driver is bolted to the inner side wall of the frame body. The moving end of the first linear driver is fixedly connected to the second linear driver. The moving end of the second linear driver is fixedly connected to the third linear driver. The moving end of the third linear driver is fixedly connected to the output component.

[0014] The effect is that the first linear driver, the second linear driver and the third linear driver are used to adjust the XYZ-axis positions of the output component, facilitating the adjustment of the position of the output component in the area above the seedling tray.

[0015] Preferably, the output component includes a mouth-shaped frame. The moving end of the third linear driver is fixedly connected to the mouth-shaped frame, and a servo motor is bolted to the top of the mouth-shaped frame.

[0016] Preferably, driving wheels are rotatably connected to the four corners inside the mouth-shaped frame. One set of driving wheels is fixedly connected to the output shaft of the servo motor. The four sets of driving wheels are connected by a belt drive, and the four sets of driving wheels respectively drive four drilling bits rotatably connected to the bottom of the mouth-shaped frame.

[0017] The effect is that the servo motor drives the driving wheels to rotate. The four sets of driving wheels respectively drive the four drilling bits to rotate. The drilling bits punch holes at the four corners above the seedling-containing part in the seedling tray to form first grooves, completing the punching of the four corners above the single seedling-containing part in the seedling tray at one time, and thus punching holes above multiple seedling-containing parts on the seedling tray to form multiple first grooves.

[0018] The present invention has the following advantages: The present invention provides a seedling tray drilling device for agricultural machinery through improvement. Compared with the same type of equipment, it has the following improvements: For the seedling tray drilling device for agricultural machinery of the present invention, the drilling bits punch holes at the four corners above the seedling-containing part in the seedling tray to form first grooves, completing the punching of the four corners above the single seedling-containing part in the seedling tray at one time, and thus punching holes above multiple seedling-containing parts on the seedling tray to form multiple first grooves; it is convenient for subsequent placement of an external light-shielding film on the seedling tray during cultivation, and then inserting an external rubber plug into the first grooves on the seedling tray and driving the light-shielding film into the first grooves to make the light-shielding film taut, avoiding contact between the light-shielding film and the soil or crops in the seedling tray, covering the seedling-containing part in the seedling tray, facilitating the user to insert the rubber plug into the first grooves according to the cultivation area on the seedling tray and covering the area above the seedling-containing part of the seedling tray.

[0019] For the seedling tray drilling device for agricultural machinery of the present invention, the punching head continues to rotate to drive the arc-shaped grinding knife to continue to rotate. By continuously controlling the outward expansion of the arc-shaped grinding knife through the third electric push rod, the inner wall of the punching area of the seedling tray is ground into a cavity by the arc-shaped grinding knife, and the cavity is convenient for subsequent placement of non-woven fabric, avoiding direct placement of the non-woven fabric on the inner bottom of the seedling tray.

[0020] The seedling tray drilling device for agricultural machinery according to the present invention moves the drive shaft into the interior of the seedling tray, and then controls the operation of the electromagnet. The electromagnet applies a thrust to the permanent magnet, and the permanent magnet moves downward to drive the receiving rod to move downward. The receiving rod loses the pulling force on the elastic rope, causing the impact ball on the elastic rope to move outward, driving the punching head to rotate. The punching head drives the impact ball to rotate, and the impact ball impacts the inner wall of the seedling tray due to the centrifugal force, forming multiple indentations on the inner wall of the seedling tray, increasing the roughness and surface area of the inner wall of the seedling tray, enhancing the soil adhesion and root grasping force, and improving the planting effect of the seedlings.

[0021] The seedling tray drilling device for agricultural machinery according to the present invention performs grinding and impact during the punching process, integrating multiple functions such as punching, grinding, and impact, saving the processing time of the seedling tray and avoiding transferring the seedling tray to other processing areas; the first punching mechanism is responsible for punching the first groove on the seedling tray, and the second punching mechanism can complete the cavity grinding and inner wall roughening treatment, meeting the different processing requirements of the seedling tray during the seedling raising process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the structural schematic diagram of the present invention Figure 1 ; Figure 2 is the structural schematic diagram of the present invention Figure 2 ; Figure 3 is the structural schematic diagram of the present invention Figure 3 ; Figure 4 is the structural schematic diagram of the present invention Figure 4 ; Figure 5 is the structural schematic diagram of the present invention Figure 5 ; Figure 6 is the structural schematic diagram of the bevel gear set of the present invention; Figure 7 is the structural schematic diagram of the sliding sleeve connection of the present invention; Figure 8 is the structural schematic diagram of the drive shaft of the present invention; Figure 9 is the present invention's Figure 2 magnified structural schematic diagram of part A in; Figure 10 is the structural schematic diagram of the output component of the present invention; Figure 11 is the structural schematic diagram of the seedling tray of the present invention; Figure 12 is the structural schematic diagram of the cavity of the present invention.

[0023] Wherein: frame - 1, electric push rod - 2, limiting plate - 3, first punching mechanism - 4, second punching mechanism - 5, seedling tray - 6, first groove - 61, cavity - 62; second electric push rod - 51, receiving frame - 52, third electric push rod - 53, sliding plate - 54, transmission mechanism - 55, drive motor - 551, worm and worm gear - 552, bevel gear set - 553, drive shaft - 554, air delivery pipe - 555, electromagnetic valve - 556, punching head - 557, sliding sleeve - 558, drive connecting rod - 559, arc grinding knife - 5510; telescopic reset rod - 5541, permanent magnet - 5542, receiving rod - 5543, through hole - 5544, elastic rope - 5545, impact ball - 5546; first linear actuator - 41, second linear actuator - 42, third linear actuator - 43, output assembly - 44, mouth - shaped frame - 441, servo motor - 442, drive wheel - 443, punching drill bit - 444. Detailed implementation mode

[0024] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0025] Please refer to Figure 1 to Figure 12 , a seedling tray drilling device for an agricultural machine of the present invention. The drilling device includes a frame 1. A side wall of the frame 1 is fixedly connected with an electric push rod 2. The telescopic end of the electric push rod 2 is fixedly connected with a limiting plate 3. The telescopic end of the electric push rod 2 drives the limiting plate 3 to move and restrict and fix the side surface of the seedling tray. The limiting plate 3 is slidably connected to the area for placing the seedling tray 6 in the frame 1; a controller is provided on the frame 1, and the controller is electrically connected to the electrical components; both the electric push rod 2 and the limiting plate 3 are provided with two groups.

[0026] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 10 , a first punching mechanism 4 is bolt - connected to the inner side wall of the frame 1, and a second punching mechanism 5 is fixedly connected to the top of the frame 1; the first punching mechanism 4 includes a first linear actuator 41, the first linear actuator 41 is bolt - connected to the inner side wall of the frame 1, the moving end of the first linear actuator 41 is fixedly connected to the housing of the second linear actuator 42, the moving end of the second linear actuator 42 is fixedly connected to the third linear actuator 43, and the moving end of the third linear actuator 43 is fixedly connected to the output assembly 44; the first linear actuator 41, the second linear actuator 42 and the third linear actuator 43 are used to adjust the XYZ - axis positions of the output assembly 44, facilitating the adjustment of the position of the output assembly 44 above the seedling tray area.

[0027] The output component 44 includes a mouth-shaped frame 441. The inside of the mouth-shaped frame 441 is hollow. The moving end of the third linear driver 43 is fixedly connected to the mouth-shaped frame 441, facilitating driving the mouth-shaped frame 441 to move. A servo motor 442 is bolted to the top of the mouth-shaped frame 441, providing a power source to drive a set of driving wheels 443 to rotate. Four driving wheels 443 are rotatably connected to the four corners inside the mouth-shaped frame 441. A set of driving wheels 443 is fixedly connected to the output shaft of the servo motor 442. The four groups of driving wheels 443 are connected by belt drive, enabling the servo motor 442 to drive multiple groups of driving wheels 443 to rotate. The four groups of driving wheels 443 respectively drive four drilling bits 444 which are rotatably connected to the bottom of the mouth-shaped frame 441.

[0028] Place the seedling tray 6 on the frame body 1, and then control the first linear driver 41, the second linear driver 42, and the third linear driver 43 to drive the mouth-shaped frame 441 to move to the upper punching area of the seedling tray 6. Then control the servo motor 442 to drive the driving wheels 443 to rotate. The four groups of driving wheels 443 respectively drive the four drilling bits 444 to rotate. The drilling bits 444 drill holes at the four corners above the seedling holding part in the seedling tray 6 to form first grooves 61, completing the punching of the four corners above the single seedling holding part of the seedling tray 6 at one time, and punching the four corners above multiple seedling holding parts on the seedling tray 6 to form multiple first grooves 61. It is convenient for subsequent cultivation. Place the external light-shielding film on the seedling tray 6, and then insert the external rubber plug into the first groove 61 on the seedling tray 6 and drive the light-shielding film into the first groove 61, making the light-shielding film taut and preventing the light-shielding film from contacting the soil or crops inside the seedling tray 6. The seedling holding parts in the seedling tray 6 are covered, facilitating the user to insert the rubber plug into the first groove 61 according to the cultivation area on the seedling tray 6 and covering the upper part of the seedling holding parts of the seedling tray 6.

[0029] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10, the second punching mechanism 5 includes a second electric push rod 51. The top of the second electric push rod 51 is bolted to the top of the frame 1, and the telescopic end of the second electric push rod 51 is fixedly connected to the receiving frame 52. A sliding plate 54 is slidably connected inside the receiving frame 52, and the sliding plate 54 fits the size of the space inside the receiving frame 52. A third electric push rod 53 is bolted to the top area of the receiving frame 52, and the telescopic end of the third electric push rod 53 penetrates into the receiving frame 52 and is bolted to the top of the sliding plate 54, facilitating the third electric push rod 53 to push the sliding plate 54 to move inside the receiving frame 52. A transmission mechanism 55 is provided on the receiving frame 52; one end of the side wall of the receiving frame 52 is fixedly connected to the connecting seat 521.

[0030] The transmission mechanism 55 includes a driving motor 551, which is bolted to the connecting seat 521. The output shaft of the driving motor 551 is fixedly connected to the worm of the worm and gear 552. The worm gear of the worm and gear 552 is fixedly connected to the center of the bevel gear at the upper end of the bevel gear set 553. The bevel gear set 553 is rotatably connected to the connecting seat 521. The center of the bevel gear below the bevel gear set 553 is fixedly connected to the side wall of the upper end of the drive shaft 554. An air delivery pipe 555 is fixedly connected inside the drive shaft 554. The upper end of the air delivery pipe 555 is rotatably connected to one end of the solenoid valve 556. The solenoid valve 556 is fixedly connected to the bottom of the receiving frame 52 and communicates with the lower space inside the receiving frame 52, facilitating the air to be delivered into the air delivery pipe 555 through the solenoid valve 556 or the air to be extracted through the air delivery pipe 555 when the sliding plate 54 moves inside the receiving frame 52. The bottom of the drive shaft 554 is fixedly connected to the punching head 557, driving the punching head 557 to rotate.

[0031] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 , a chute frame is embedded in the side wall of the lower end of the drive shaft 554. A sliding sleeve 558 is slidably connected inside the chute frame, and the sliding sleeve 558 fits tightly inside the chute frame, facilitating the sliding sleeve 558 to move when the air in the chute frame is suctioned. The inner side wall of the sliding sleeve 558 is slidably mated with one end of the drive link 559. The drive link 559 is rotatably connected to the top of the punching head 557, and the other end of the drive link 559 is fixedly connected to the arc-shaped grinding knife 5510; an embedding groove is embedded in the sliding sleeve 558, which facilitates the insertion and sliding of one end of the drive link 559.

[0032] A telescopic reset rod 5541 is fixedly connected inside the drive shaft 554. The telescopic reset rod 5541 consists of an inner cylinder, an outer cylinder and a spring. The inner cylinder is slidably arranged inside the outer cylinder. A spring is fixedly connected inside the outer cylinder and is fixedly connected to the inner cylinder. The moving end of the telescopic reset rod 5541 is fixedly connected to the permanent magnet 5542. The bottom of the permanent magnet 5542 is fixedly connected to the receiving rod 5543. An elastic cord 5545 is fixedly connected to the side wall of the receiving rod 5543. The other end of the elastic cord 5545 is fixedly connected to the impact ball 5546. The impact ball 5546 is inserted into the through hole 5544 on the surface of the drive shaft 554.

[0033] An electromagnet is provided at the bottom of the receiving frame 52. When the electromagnet is energized, it repels the permanent magnet 5542 and pushes the permanent magnet 5542 to move downward; when the electromagnet is de-energized, the telescopic reset rod 5541 drives the permanent magnet 5542 to move upward to reset, so that the permanent magnet 5542 drives the impact ball 5546 to move back to above the through hole 5544 through the receiving rod 5543.

[0034] The worms on multiple sets of worm gears 552 are integrated, so that the drive motor 551 drives multiple sets of worm gears 552 to drive multiple sets of bevel gear sets 553 to rotate simultaneously.

[0035] The working principle of a seedling tray drilling device for agricultural machinery is as follows: When using this device, first place this device in the working area, and then connect the device to an external power source to provide the power required for the operation of this device; Place the seedling tray 6 upside down on the frame body 1. Control the second electric push rod 51 to drive the receiving frame 52 to move downward. The receiving frame 52 drives the punching head 557 below to move downward and contact the seedling tray 6. Then control the drive motor 551 to drive the worm gear 552 to rotate. The worm gear 552 drives the bevel gear set 553 to rotate. The bevel gear set 553 drives the drive shaft 554 to rotate. The drive shaft 554 drives the punching head 557 to punch the seedling tray 6. Then the second electric push rod 51 drives the punching head 557 to move downward. When the arc-shaped grinding knife 5510 on the punching head 557 is located in the punching area at the bottom of the seedling tray 6; Control the third electric push rod 53 to push the sliding plate 54 to move upward. The sliding plate 54 extracts the air in the receiving frame 52 and enters the inside of the receiving frame 52 through the air pipe 555. The air pipe 555 extracts the air in the chute frame and pulls the sliding sleeve 558 to move inward. The sliding sleeve 558 drives the driving connecting rod 559 to rotate. The driving connecting rod 559 drives the arc grinding knife 5510 to rotate outward. The arc grinding knife 5510 contacts the punching area of the punching head 557 and the seedling tray. Subsequently, the punching head 557 continues to rotate and drives the arc grinding knife 5510 to continue to rotate. By continuously controlling the outward expansion of the arc grinding knife 5510 through the third electric push rod 53, the inner wall of the punching area of the seedling tray 6 is ground into a cavity 62 by the arc grinding knife 5510. And the cavity 62 is convenient for placing non-woven fabric subsequently, avoiding the non-woven fabric being directly placed at the inner bottom of the seedling tray 6. After the non-woven fabric is placed in the cavity 62, the external small rubber blocks are stuffed into the cavity 62, so that the rubber blocks are extruded in the cavity 62 and the non-woven fabric is fixed. Then control the second electric push rod 51 to drive the receiving frame 52 to continue to move downward. The receiving frame 52 drives the driving shaft 554 to move into the inside of the seedling tray 6. Then control the electromagnet to operate. The electromagnet applies a thrust to the permanent magnet 5542. The permanent magnet 5542 moves downward and drives the receiving rod 5543 to move downward. The receiving rod 5543 loses the pulling force on the elastic rope 5545, so that the impact ball 5546 on the elastic rope 5545 moves outward, driving the punching head 557 to rotate. The punching head 557 drives the impact ball 5546 to rotate. Due to the centrifugal force, the impact ball 5546 impacts the inner side wall of the seedling tray 6, forming multiple dents on the inner side wall of the seedling tray 6, increasing the roughness and surface area of the inner wall of the seedling tray, enhancing the soil adhesion and root gripping force, and improving the planting effect of seedling raising.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. And the standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part all adopt the mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machines, parts and equipment all adopt the conventional models in the prior art. Plus, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seedling tray drilling device for agricultural machinery, including a frame body. A side wall of the frame body is fixedly connected with an electric push rod, and a telescopic end of the electric push rod is fixedly connected with a limiting plate. The limiting plate is slidably connected to the area in the frame body where the seedling tray is placed. Characterized in that ； A first punching mechanism is bolted to the inner side wall of the frame body, and a second punching mechanism is fixedly connected to the top of the frame body. The second punching mechanism includes a second electric push rod. The top of the second electric push rod is bolted to the top of the frame body, and a telescopic end of the second electric push rod is fixedly connected with a receiving frame. A sliding plate is slidably connected in the receiving frame. A third electric push rod is bolted to the top area of the receiving frame, and a telescopic end of the third electric push rod penetrates into the receiving frame and is bolted to the top of the sliding plate. A transmission mechanism is provided on the receiving frame. One end of the side wall of the receiving frame is fixedly connected with an adapter seat.

2. The seedling tray drilling device for agricultural machinery according to claim 1, characterized in that: The transmission mechanism includes a driving motor. The driving motor is bolted to the adapter seat. An output shaft of the driving motor is fixedly connected with a worm of a worm and gear. A worm wheel of the worm and gear is fixedly connected to the center of a bevel gear at the upper end of a bevel gear set. The bevel gear set is rotatably connected to the adapter seat. A side wall of the upper end of a driving shaft is fixedly connected to the center of a bevel gear below the bevel gear set. An air delivery pipe is fixedly connected inside the driving shaft. An upper end of the air delivery pipe is rotatably connected to one end of an electromagnetic valve. The electromagnetic valve is fixedly connected to the bottom of the receiving frame and is communicated with the lower space inside the receiving frame. The bottom of the driving shaft is fixedly connected with a punching head.

3. The seedling tray drilling device for agricultural machinery according to claim 2, characterized in that: A chute frame is embedded in a side wall of the lower end of the driving shaft. A sliding sleeve is slidably connected in the chute frame. An inner side wall of the sliding sleeve is slidably matched with one end of a driving link. The driving link is rotatably connected to the top of the punching head. The other end of the driving link is fixedly connected with an arc-shaped grinding knife. The punching head drives the arc-shaped grinding knife to continue rotating. By continuously controlling the outward expansion of the arc-shaped grinding knife through the third electric push rod, the inner wall of the punching area of the seedling tray is ground into a cavity by the arc-shaped grinding knife, and the cavity is convenient for placing non-woven fabric subsequently, avoiding directly placing the non-woven fabric at the inner bottom of the seedling tray.

4. The seedling tray drilling device for agricultural machinery according to claim 3, wherein: A telescopic reset rod is fixedly connected inside the driving shaft. A moving end of the telescopic reset rod is fixedly connected with a permanent magnet. The bottom of the permanent magnet is fixedly connected with a receiving rod. An elastic rope is fixedly connected to a side wall of the receiving rod. The other end of the elastic rope is fixedly connected with an impact ball. The impact ball is inserted into a through hole provided on the surface of the driving shaft.

5. The seedling tray drilling device for agricultural machinery according to claim 4, characterized in that: An electromagnet is provided at the bottom of the receiving frame. When the electromagnet is energized, it is repelled by the permanent magnet and pushes the permanent magnet downward.

6. The seedling tray drilling device for agricultural machinery according to claim 5, characterized in that: The worms on multiple groups of worm and gears are integrated, so that the driving motor simultaneously drives multiple groups of worm and gears to drive multiple groups of bevel gear sets to rotate.

7. The seedling tray drilling device for agricultural machinery according to claim 6, wherein: The first punching mechanism includes a first linear driver. The first linear driver is bolted to the inner side wall of the frame body. A moving end of the first linear driver is fixedly connected with a second linear driver. A moving end of the second linear driver is fixedly connected with a third linear driver. A moving end of the third linear driver is fixedly connected with an output assembly.

8. The seedling tray drilling device for agricultural machinery according to claim 7, characterized in that: The output assembly includes a U-shaped frame. A moving end of the third linear driver is fixedly connected with the U-shaped frame. A servo motor is bolted to the top of the U-shaped frame.

9. The seedling tray drilling device for agricultural machinery according to claim 8, characterized in that: Drive wheels are rotatably connected to the four corners inside the mouth-shaped frame. One set of drive wheels is fixedly connected to the output shaft of the servo motor. The four sets of drive wheels are connected by belt drive. The four sets of drive wheels respectively drive four sets of punching drills rotatably connected to the bottom of the mouth-shaped frame. The four sets of drive wheels respectively drive the four sets of punching drills to rotate. The punching drills punch holes at the four corners above the seedling-containing part in the seedling tray to form the first grooves, completing the punching of the four corners above the single seedling-containing part in the seedling tray at one time, and punching holes above multiple seedling-containing parts on the seedling tray to form multiple first grooves. Rubber pins are inserted into the first grooves and drive the light-shielding film into the first grooves, making the light-shielding film taut and preventing the light-shielding film from contacting the soil or crops in the seedling tray.

Images