A device for peony grafting and its operation method

Abstract

A device and its operating method for peony grafting, belonging to the field of agricultural machinery, includes a cutting mechanism, a seedling pressing mechanism, and a cut fixing mechanism. The cut fixing mechanism has a first clamping cylinder and a second clamping cylinder on both sides of a C-shaped ring. A clamping plate is connected to the piston rod end of the first clamping cylinder, and two clamping rods are connected to the piston rod end of the second clamping cylinder. After the clamping plate and the two clamping rods are aligned within the inner ring of the C-shaped ring, the two clamping rods are positioned on opposite sides of the clamping plate. A pressing cylinder fixing plate and a pressing cylinder are connected to the piston rod end of either the first or second clamping cylinder. The piston rod of the pressing cylinder extends upwards and is fixed to the pressing plate. The pressing plate presses and fixes the film drawn from the film roll onto the bottom surface of the clamping plate and clamping rods. When the film is released, the synchronously retracting clamping plate and clamping rods generate opposite frictional forces on the film, preventing the film from being deflected or wrinkled, thus improving the wrapping and fixing effect.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery, and in particular relates to a device and its operation method for peony grafting. Background Technology

[0002] Grafting technology is the core of peony cultivation and breeding. By grafting scions of superior varieties onto robust rootstocks, the flowering cycle can be shortened, enabling the rapid propagation of superior varieties. This is of great significance in the industrial production of peonies.

[0003] Currently, peony grafting is mainly done manually. During manual grafting, the operator uses a knife to cut the rootstock and scion. The cutting angle depends on the operator's experience and feel, making it difficult to ensure consistency in the cutting angle of seedlings from the same batch. After cutting, the operator must manually align the cuts of the rootstock and scion and wrap the cut area with plastic film to secure it. While this method ensures flexibility to some extent, it has the following technical problems: First, there is a significant difference in operating speed and quality between skilled and unskilled grafters, making it difficult to guarantee the uniformity of grafting quality; second, manually wrapping the cut with plastic film requires coordinated actions of wrapping, tightening, and knotting, resulting in a long processing time per operation, low grafting efficiency, and difficulty in meeting the needs of large-scale production.

[0004] Among currently available mechanized grafting equipment, such as Chinese patent CN112889508A, a common method involves using a ring to drive a rotating film roll to wrap around and fix the grafted seedling placed at the center of the ring. During wrapping and fixing, the end of the film extending from the film roll needs to be secured, and the usual method is to use a mechanical gripper or similar device, as described in this application. This method causes the film to wrinkle, and when wrapped around the grafted seedling, the wrinkles affect the adhesion between the film and the seedling, thus impacting the wrapping and fixing effect. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect that the film is prone to wrinkling when the grafted seedling is wrapped and fixed by mechanized grafting equipment, which affects the wrapping and fixing effect, and to provide a device and operation method for peony grafting.

[0006] The technical solution adopted by this invention to solve the above-mentioned technical problems is as follows: a device for peony grafting, comprising a cutting mechanism for cutting the rootstock or scion, a pressing mechanism for pressing and fixing the rootstock and scion when they are joined, and a cut fixing mechanism for wrapping and fixing the joint position of the rootstock and scion. The cut fixing mechanism includes a C-shaped ring, which can rotate under the drive of a power mechanism. A thin film drawn from a film roll provided on the C-shaped ring wraps the joint position of the rootstock and scion. A first film-clamping cylinder and a second film-clamping cylinder are respectively provided on both sides of the C-shaped ring. The piston rod end of the first film-clamping cylinder is connected to a film-clamping plate, and the piston rod end of the second film-clamping cylinder is connected to two... A clamping rod; the piston rods of the first clamping cylinder and the second clamping cylinder extend in opposite directions. After the piston rods of the first clamping cylinder and the second clamping cylinder extend in opposite directions, the clamping plate and the two clamping rods are joined in the inner ring of the C-shaped ring, and after joining, the two clamping rods are respectively located on both sides of the clamping plate; the piston rod end of the first clamping cylinder or the second clamping cylinder is also connected to a pressing cylinder fixing plate. The pressing cylinder is fixed on the pressing cylinder fixing plate. The piston rod of the pressing cylinder extends upward, and the pressing plate is fixed on the piston rod of the pressing cylinder. The pressing plate, driven by the pressing cylinder, can press and fix the film drawn from the film roll onto the bottom surface of the clamping plate and the clamping rod.

[0007] The clamping plate and clamping rod extend toward the C-shaped ring by the same amount, and can detach from the film synchronously when they retract as the piston rods of the first clamping cylinder and the second clamping cylinder retract, respectively.

[0008] A pen-shaped cylinder is provided on the side of the first or second clamping cylinder. A blade fixing plate is provided at the end of the piston rod of the pen-shaped cylinder. A cutting blade is installed on the blade fixing plate. The cutting edge of the cutting blade faces the film clamped between the pressing plate and the clamping plate. After the piston rod of the pen-shaped cylinder extends, the cutting blade that extends with it can cut the film.

[0009] Both sides of the C-shaped ring are equipped with a seedling pressing mechanism, which includes a seedling pressing cylinder fixing plate, a seedling pressing cylinder, and a seedling placing platform. The seedling pressing cylinder is installed on the seedling pressing cylinder fixing plate, with the piston rod of the seedling pressing cylinder facing downward and its end connected to a flexible pressing pad. The seedling placing platform is located directly below the seedling pressing cylinder. The seedling pressing cylinder drives the flexible pressing pad to press down, which can press the rootstock or scion tightly and fix it on the seedling placing platform.

[0010] The top surface of the seedling platform is provided with a U-shaped groove for placing rootstock or scion. The depth of the U-shaped groove is less than the diameter of the rootstock or scion, so as to ensure that the flexible pressure pad can contact the upper surface of the rootstock or scion when it is pressed down.

[0011] The cutting mechanism includes a base, a cutting base plate, a tensioning bolt, a cutting cylinder, and a seedling holder. The cutting cylinder is mounted on the cutting base plate, and its piston rod end is connected to a cutting blade facing the seedling holder. The top surface of the base has an upwardly extending first connecting part, and the bottom of the cutting base plate has a downwardly extending second connecting part. The second connecting part of the cutting base plate is connected to the first connecting part of the base via a tensioning bolt. The axis of the tensioning bolt is parallel to the extension direction of the piston rod of the cutting cylinder. After the tensioning bolt is released, the cutting base plate can rotate around the axis of the tensioning bolt to adjust the angle between the cutting blade and the horizontal plane.

[0012] The cutting base plate is provided with a slide rail, and a tool groove for mounting the cutting blade is fixed on the slider that cooperates with the slide rail; the piston rod of the cutting cylinder is connected to the tool groove or the slider, and the tool groove and the cutting blade are driven to reciprocate linearly along the slide rail by controlling the extension and retraction of the cutting cylinder.

[0013] The top surface of the seedling holder is provided with a positioning groove for supporting the rootstock or scion. A seedling pressing block is provided in the positioning groove. The seedling pressing block is connected to a compression spring provided on the side wall of the positioning groove. The spring force of the compression spring enables the seedling pressing block to press and fix the rootstock or scion.

[0014] The part of the seedling holder that works with the seedling pressing block to clamp the rootstock or scion consists of two relatively separate clamping plates, with an opening between the two clamping plates for the cutting blade to pass through.

[0015] A method for operating a device for grafting peonies, before fixing the position of the rootstock and scion, extends the piston rods of the first and second clamping cylinders of the incision fixing mechanism relative to each other, inserts the clamping plate between the two clamping rods, and the piston rod of the pressing cylinder drives the pressing plate to extend upward, pressing and fixing the film drawn from the film roll onto the bottom surface of the clamping plate and the clamping rods. Once the prepared rootstock and scion are joined together in the inner ring of the C-ring and fixed in position by the seedling pressing mechanism, the C-ring is driven to rotate, causing the film to wrap around the joining position of the rootstock and scion. When the C-ring is about to rotate to the second turn, the film pressing cylinder retracts, the film pressing plate descends to release the film, and the first and second film clamping cylinders retract synchronously, so that the film clamping plate and film clamping rod retract synchronously. The C-shaped ring continues to drive the film roll to rotate and wrap around the rootstock and scion docking position. When it rotates to the last rotation of the preset number of rotations, the first clamping cylinder and the second clamping cylinder extend relative to each other, so that the clamping plate is inserted between the two clamping rods. Complete the last rotation of the C-ring to wind the film onto the bottom surface of the clamping plate and clamping rod; the pressing cylinder drives the pressing plate to extend upwards and press the film firmly and fix it to the bottom surface of the clamping plate and clamping rod; The pen-shaped cylinder drives the cutting blade to extend forward and cut the film. After cutting, the pen-shaped cylinder retracts, the seedling pressing mechanism is released, and the rootstock and scion wrapped and fixed by the film are removed, completing one grafting operation.

[0016] The beneficial effects of this invention are as follows: The incision fixing mechanism for peony grafted seedlings uses a clamping plate and two clamping rods in conjunction with a pressing plate to clamp and fix the film, ensuring that the clamped film remains flat. Furthermore, when the film is released, the synchronously retracting clamping plate and clamping rods generate opposite frictional forces on the film, and the two clamping rods act synchronously on both sides of the clamping plate, preventing the film from being pulled away and causing deflection or wrinkles. This structural method ensures that the film wrapped around the grafted seedling remains flat and wrinkle-free, thereby improving the wrapping and fixing effect.

[0017] Based on the solutions to the aforementioned problems, pressing mechanisms are installed on both sides of the C-shaped ring to press and fix the rootstock and scion respectively, ensuring a good fit between the rootstock and scion at the joint during wrapping and fixing. The pressing mechanism uses the U-shaped groove and flexible pressure pad of the seedling platform to press the rootstock or scion firmly, ensuring stable pressing and fixing without damaging the rootstock and scion.

[0018] In the cutting mechanism, the cutting base plate and the base are connected by a relatively protruding connecting part and fixed by a tension bolt. By loosening the tension bolt, the angle of the cutting base plate can be easily adjusted, thereby flexibly adjusting the cutting angle of the cutting blade as needed to adapt to different grafting specifications. The positioning groove on the top surface of the seedling seat is equipped with a seedling pressing block and a compression spring to press and fix the rootstock or scion, ensuring a good fixing effect while accommodating peony seedlings of different diameters.

[0019] The seedling holder uses two relatively separate clamping plates and a seedling pressing block to clamp the rootstock or scion. The two clamping plates are respectively fixed at both ends of the part to be cut. The cutting blade passes through the opening between the two clamping plates to cut the rootstock or scion, which can avoid one end from deflecting due to the soft texture of the rootstock or scion during cutting and ensure the accuracy of the cutting angle. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the device described in this invention.

[0021] Figure 2 This is a schematic diagram of the cutting mechanism of the present invention.

[0022] Figure 3 This is a schematic diagram of the seedling pressing mechanism of the present invention.

[0023] Figure 4 This is a schematic diagram of the incision fixing mechanism of the present invention.

[0024] Figure 5 This is a schematic diagram of the incision fixing mechanism of the present invention from another perspective.

[0025] Figure 6 yes Figure 5 A magnified view of a portion of area A of the central incision fixing mechanism.

[0026] Marked in the image: 1. Frame; 2. Casters; 3. Electrical control box; 4. Control panel; 5. Cutting mechanism, 501. Base, 502. Tensioning bolt, 503. Cutting cylinder, 504. Compression spring, 505. Seedling pressing block, 506. Seedling placement seat, 507. Slide rail, 508. Cutting blade, 509. Blade groove, 510. Slider, 511. Cutting base plate, 512. Positioning groove, 513. Clamping plate; 6. Seedling pressing mechanism, 601. Seedling pressing cylinder fixing plate, 602. Seedling pressing cylinder, 603. Seedling placing platform, 604. Flexible pressing pad, 605. Flexible pressing pad fixing plate; 7. Cut the tabletop; 8. Fix the tabletop with the cut. 9. Cutting and fixing mechanism; 901. Mounting plate; 902. First synchronous pulley; 903. Synchronous belt; 904. Second synchronous pulley; 905. Stepper motor; 906. First roller; 907. Third synchronous pulley; 908. C-ring; 909. Second roller; 910. Third roller; 911. Fourth roller; 912. Fifth roller; 913. First clamping cylinder; 914. First clamping cylinder fixing plate; 915. Pressing cylinder fixing plate; 916. Pressing cylinder; 917. Film roll shaft; 918. Film roll; 919. Second clamping cylinder; 920. Second clamping cylinder fixing plate; 921. Pen-shaped cylinder; 922. Blade fixing plate; 923. Cutting blade; 924. Clamping rod; 925. Clamping plate; 926. Pressing plate; 10. Film. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. The specific contents listed in the following embodiments are not limited to the technical features necessary to solve the technical problem of the present invention. Furthermore, the listed embodiments are merely a part of the present invention, and not all embodiments.

[0028] like Figure 1 As shown, the peony grafting device of the present invention includes a frame 1, an operating table 4, a cutting mechanism 5, a seedling pressing mechanism 6, a cut fixing mechanism 9, and an electrical control box 3. The frame 1 is equipped with casters 2 at its bottom for easy movement of the entire device. The cutting mechanism 5, the seedling pressing mechanism 6, and the cut fixing mechanism 9 are mounted on the operating table 4. The electrical control box 3 is mounted on the frame 1 and integrates a controller and an air circuit regulating valve. It connects each cylinder to a stepper motor via air pipes and cables to achieve automatic control of the action sequence. Figure 1In the illustrated embodiment, two cutting mechanisms 5 are provided, respectively mounted on the cutting table plates 7 on both sides of the operating table 4. The two cutting mechanisms 5 can be set with different parameters for the rootstock and scion, respectively, to simultaneously complete the cutting of the peony rootstock and scion. A cut-fixing table plate 8 is provided in the middle of the operating table 4, and a cut-fixing mechanism 9 is mounted on the cut-fixing table plate 8. Two seedling pressing mechanisms 6 are provided, respectively arranged on both sides of the cut-fixing mechanism 9, cooperating with the cut-fixing mechanism 9 to complete the alignment, fixing, and wrapping of the grafted seedling cut.

[0029] like Figure 2 As shown, the cutting mechanism includes a base 501, a tensioning bolt 502, a cutting cylinder 503, a compression spring 504, a seedling pressing block 505, a seedling placing seat 506, a slide rail 507, a cutting blade 508, a cutting groove 509, a slider 510, and a cutting base plate 511. The base 501 is bolted to the cutting table 7 of the operating table 4, and its top surface is connected to the bottom of the cutting base plate 511 via the tensioning bolt 502. The cutting base plate 511 is provided with a slide rail 507, and the cutting groove 509 is fixed to the slider 510 that cooperates with the slide rail 507. The cutting cylinder 503 is set on the cutting base plate 511, and its piston rod is connected to the cutting groove 509 or the slider 510. By controlling the extension and retraction of the cutting cylinder 503, the cutting groove 509 is driven to reciprocate linearly along the slide rail 507.

[0030] The seedling holder 506 is fixed to the cutting table 7 and located directly in front of the movement path of the slide rail 507. The top surface of the seedling holder 506 has a positioning groove 512 for supporting the rootstock or scion. One end of the compression spring 504 is fixed to the side wall of the positioning groove, and the other end is connected to the pressing block 505. The operator pushes the pressing block 505 to compress the compression spring 504. After placing the rootstock or scion into the positioning groove of the seedling holder 506, the pressing block 505 is released, and the compression spring 504 rebounds, causing the pressing block 505 to hold the rootstock or scion in place under the spring force, achieving radial clamping of the rootstock or scion. Because the diameters of the rootstock or scion differ, the compression amount of the compression spring 504 automatically adjusts according to the seedling diameter, ensuring the seedling's position remains stable during the cutting process.

[0031] The cutting edge of the cutting blade 508 fixed in the blade groove 509 faces the direction of the seedling holder 506. When the cutting cylinder 503 extends, the piston rod pushes the blade groove 509, causing the slider 510 to move forward along the slide rail 507. The cutting blade 508 moves forward accordingly to cut the rootstock or scion. When the cutting cylinder 503 retracts, the cutting blade 508 returns to its initial position.

[0032] like Figure 2As shown, the part of the seedling holder 506 that works with the seedling pressing block 505 to clamp the rootstock or scion consists of two relatively separate clamping plates 513, with an opening between the two clamping plates 513 for the cutting blade 508 to pass through. This structure can stably clamp both ends of the rootstock or scion to be cut, ensuring that the rootstock or scion will not deviate during cutting and affect the cut angle.

[0033] The top surface of the base 501 has an upwardly extending first connecting part, and the bottom of the cutting base plate 511 has a downwardly extending second connecting part. The second connecting part of the cutting base plate 511 and the first connecting part of the base 501 are connected by a tension bolt 502. The axis of the tension bolt 502 is parallel to the extension direction of the slide rail 507. After releasing the tension bolt 502, the cutting base plate 511 can rotate around the axis of the tension bolt 502, changing the angle between the cutting blade 508 and the horizontal plane, thereby adjusting the cutting angle of the rootstock or scion. After adjustment, tightening the tension bolt 502 to make the cutting base plate 511 and the base 501 fit tightly and fix them, thus locking the cutting angle.

[0034] like Figure 3 As shown, the seedling pressing mechanism includes a seedling pressing cylinder fixing plate 601, a seedling pressing cylinder 602, a flexible pressing pad 604, a flexible pressing pad fixing plate 605, and a seedling placing platform 603. The seedling pressing cylinder fixing plate 601 is fixed to the cut-out fixing table 8 of the operating table 4, and the seedling pressing cylinder 602 is mounted on the seedling pressing cylinder fixing plate 601. The piston rod of the seedling pressing cylinder 602 faces downward, and its end is connected to the flexible pressing pad fixing plate 605. The lower end face of the flexible pressing pad fixing plate 605 is provided with a flexible pressing pad 604. If necessary, the flexible pressing pad 604 can also be directly fixed to the end of the piston rod of the seedling pressing cylinder 602. The seedling placing platform 603 is located directly below the seedling pressing cylinder 602. The seedling placing platform 603 can be directly fixed to the cut-out fixing table 8 or connected to the seedling pressing cylinder fixing plate 601. The top surface of the seedling tray 603 is provided with a U-shaped groove for placing the rootstock or scion. The depth of the U-shaped groove is less than the diameter of the rootstock or scion, ensuring that the flexible pressing pad 604 can contact the upper surface of the rootstock or scion when pressed down. The flexible pressing pad 604 is made of soft material with good elasticity, avoiding damage to the stem epidermis of the peony rootstock or scion when pressed tightly. In this embodiment, the flexible pressing pad 604 is a foam block. If necessary, the flexible pressing pad 604 can also be made of other materials such as silicone pads.

[0035] Both sides of the incision fixing mechanism 9 are equipped with seedling pressing mechanisms 6. The operator places the cut peony rootstock and scion into the U-shaped grooves of the seedling placement platform 603 of the corresponding seedling pressing mechanism on both sides, and manually assists in aligning the cuts of the two. Then, the seedling pressing cylinder 602 extends synchronously, and the flexible pressing pad 604 presses down synchronously, pressing the upper surfaces of the rootstock and scion respectively, so that the cuts of the two are kept in close contact. Afterwards, the joint is wrapped with a film by the incision fixing mechanism 9.

[0036] like Figure 4-6 As shown, the cutting and fixing mechanism 9 includes a mounting plate 901, a stepper motor 905, a C-ring 908, a film winding shaft 917, a first film clamping cylinder 913, a second film clamping cylinder 919, and a film pressing cylinder 916. The mounting plate 901 is a vertical plate structure fixed to the frame 1. The stepper motor 905 is fixed to the back of the mounting plate 901, and its output shaft passes through the mounting plate 901 and is connected to a first synchronous pulley 902. The C-ring 908 is located on the front of the mounting plate 901, and its circumference is supported by multiple rollers. Figure 4 and Figure 5 As shown, it includes a first roller 906, a second roller 909, a third roller 910, a fourth roller 911, and a fifth roller 912. These rollers collectively support the C-shaped ring 908, restricting its radial movement while allowing it to rotate. The number of rollers is not limited to the embodiment shown in the figure and can be increased or decreased as needed.

[0037] A second synchronous pulley 904 and a third synchronous pulley 907 are mounted on the mounting plate 901 on one side of the C-ring 908. A synchronous belt 903 is fitted onto the first synchronous pulley 902, the second synchronous pulley 904, and the third synchronous pulley 907, forming a triangular transmission path. The synchronous belt 903 between the second synchronous pulley 904 and the third synchronous pulley 907 presses against the circumferential surface of the C-ring 908. When the stepper motor 905 drives the synchronous belt 903 via the first synchronous pulley 902, it can drive the C-ring 908 to rotate. The synchronous belt 903 is positioned between the first roller 906 and the C-ring 908, with the first roller 906 pressing the synchronous belt 903 against the C-ring 908, ensuring a tight fit between the synchronous belt 903 and the C-ring 908 and preventing slippage during operation. The rotational position of the C-ring 908 is controlled by the number of rotations of the stepper motor 905, or by detecting its rotational position using a sensor installed on the mounting plate 901.

[0038] A film-rolling shaft 917 is fixed to the outer surface of the C-shaped ring 908, and a film roll 918 is fitted onto the film-rolling shaft 917, rotating synchronously with the C-shaped ring 908. A cutout is provided on the mounting plate 901 at a position corresponding to the inner circle of the C-shaped ring 908, so that the joint surfaces of the rootstock and scion, held by the seedling pressing mechanism, are located within the inner circle of the C-shaped ring 908. When the film roll 918 rotates synchronously with the C-shaped ring 908, the film extending from the film roll 918 can wrap around and secure the joint between the rootstock and scion, thus fixing the grafted seedling.

[0039] The C-shaped ring 908 has a notch, and the mounting plate 901 also has a notch that connects to its hollowed-out portion. The positions of the notches on the mounting plate 901 and the C-shaped ring 908 in the initial state correspond to the positions of the notches, making it convenient to take the grafted seedlings out and put them in through the notches.

[0040] The first clamping cylinder 913 and the second clamping cylinder 919 are respectively disposed on the front and back sides of the mounting plate 901. The first clamping cylinder 913 is mounted on the mounting plate 901 via a first clamping cylinder fixing plate 914, and the second clamping cylinder 919 is mounted on the mounting plate 901 via a second clamping cylinder fixing plate 920. The piston rods of the first clamping cylinder 913 and the second clamping cylinder 919 extend in opposite directions and are located within the inner ring of the C-shaped ring 908.

[0041] like Figure 6 As shown, the piston rod end of the first clamping cylinder 913 is connected to a pressing cylinder fixing plate 915 and a clamping plate 925. A pressing cylinder 916 is fixed on the pressing cylinder fixing plate 915. The piston rod of the pressing cylinder 916 extends upwards and is opposite to the clamping plate 925. The position of the pressing cylinder 916 is lower than the C-ring 908, so it does not affect the rotation of the film roll 918 driven by the C-ring 908. The piston rod of the pressing cylinder 916 is fixed to the pressing plate 926. The piston rod end of the second clamping cylinder 919 is connected to two clamping rods 924. After the piston rods of the first clamping cylinder 913 and the second clamping cylinder 919 extend relative to each other, the two clamping rods 924 are respectively located on both sides of the clamping plate 925. The film-pressing plate 926, driven by the film-pressing cylinder 916, extends upward and presses the film 10 drawn from the film roll 918 onto the bottom surfaces of the clamping plate 925 and the clamping rod 924. The clamping plate 925 and the clamping rod 924 extend to the same extent in the direction of the C-ring 908, and can simultaneously detach from the film when they retract as the piston rods of the first clamping cylinder 913 and the second clamping cylinder 919 retract, respectively.

[0042] A pen-shaped cylinder 921 is provided on the side of either the first clamping cylinder 913 or the second clamping cylinder 919. In the illustrated embodiment, the pen-shaped cylinder 921 is fixed to the second clamping cylinder fixing plate 920. A blade fixing plate 922 is provided at the end of the piston rod of the pen-shaped cylinder 921. A cutting blade 923 is mounted on the blade fixing plate 922, with the cutting edge of the cutting blade 923 facing the film 10 clamped between the pressing plate 926 and the clamping plate 925. After the piston rod of the pen-shaped cylinder 921 extends, the cutting blade 923 extends accordingly and can cut the film 10.

[0043] The working process of the incision fixing mechanism 9 is as follows: In the initial state, the piston rods of the first clamping cylinder 913 and the second clamping cylinder 919 extend relative to each other, and the clamping plate 925 is inserted between the two clamping rods 924. The piston rod of the pressing cylinder 916 drives the pressing plate 926 to extend upward, pressing and fixing the film 10 drawn from the film roll 918 onto the bottom surface of the clamping plate 925 and the clamping rods 924. When the cut rootstock and scion are joined in the inner circle of the C-shaped ring 908 and fixed in position by the seedling pressing mechanism 6, the stepper motor 905 starts, driving the C-shaped ring 908 to rotate. The film roll 918 rotates with the C-shaped ring 908, so that the film 10 is wound around to the joining position of the rootstock and scion. When the C-shaped ring 908 is about to rotate to the second turn, the pressing cylinder 916 retracts, and the pressing plate 926 descends to release the film 10. Simultaneously, the first clamping cylinder 913 and the second clamping cylinder 919 contract synchronously, and the clamping plate 925 and the clamping rod 924 retract synchronously. The film roll 918, driven by the C-shaped ring 908, begins to wrap around the incision and adhesion area of ​​the peony grafted seedling. When the C-shaped ring 908 rotates to the last of the preset number of turns, the first clamping cylinder 913 and the second clamping cylinder 919 respectively drive the clamping plate 925 and the clamping rod 924 to extend first. The C-shaped ring 908 drives the film roll 918 to continue rotating, and the film 10 drawn from the film roll 918 wraps around the lower surface of the clamping plate 925 and the clamping rod 924. After the C-shaped ring 908 completes the last rotation, it stops, the pressing cylinder 916 extends, and the pressing plate 926 rises to press the end of the film 10 drawn from the film roll 918. Subsequently, the pen-shaped cylinder 921 extends, and the cutting blade 923 moves forward to cut the film 10. After the pen-shaped cylinder 921 is retracted, the two pressing cylinders 602 rise, causing the flexible pressing pad 604 to loosen the rootstock or scion. The operator then takes out the grafted seedling with the cut wound wrapped and fixed, completing one peony grafting operation.

[0044] The above description of specific embodiments is only for the purpose of helping to understand the technical concept and core idea of ​​the present invention. Although specific preferred embodiments have been used to describe and illustrate the technical solutions, they should not be construed as limiting the present invention itself. Those skilled in the art can make various changes in form and detail without departing from the technical concept of the present invention. These easily conceived changes or substitutions should all be covered within the protection scope of the present invention.

Claims

1. An apparatus for grafting peony, comprising a cutting mechanism (5) for cutting the rootstock or scion, a pressing mechanism (6) for pressing and fixing the rootstock and scion together, and a cut fixing mechanism (9) for wrapping and fixing the joint position of the rootstock and scion, wherein the cut fixing mechanism (9) comprises a C-ring (908) rotatable under the drive of a power mechanism, and a thin film (10) drawn from a film roll (918) provided on the C-ring wraps the joint position of the rootstock and scion, characterized in that: A first clamping cylinder (913) and a second clamping cylinder (919) are respectively provided on both sides of the C-ring (908). The piston rod end of the first clamping cylinder (913) is connected to a clamping plate (925), and the piston rod end of the second clamping cylinder (919) is connected to two clamping rods (924). The piston rods of the first clamping cylinder (913) and the second clamping cylinder (919) extend in opposite directions. After the piston rods of the first clamping cylinder (913) and the second clamping cylinder (919) extend relative to each other, the clamping plate (925) and the two clamping rods (924) are joined in the inner ring of the C-ring, and after joining, the two clamping rods (924) are joined in the inner ring. 4) They are respectively located on both sides of the clamping plate (925); the piston rod end of the first clamping cylinder (913) or the second clamping cylinder (919) is also connected to the pressing cylinder fixing plate (915), the pressing cylinder fixing plate (915) is fixed with the pressing cylinder (916), the piston rod of the pressing cylinder (916) extends upward, the piston rod of the pressing cylinder (916) is fixed with the pressing plate (926), the pressing plate (926) extended upward by the pressing cylinder (916) can press and fix the film (10) drawn from the film roll (918) onto the bottom surface of the clamping plate (925) and the clamping rod (924).

2. The device for peony grafting as described in claim 1, characterized in that: The clamping plate (925) and the clamping rod (924) extend toward the C-shaped ring by the same amount, and can detach from the film synchronously when they retract as the piston rods of the first clamping cylinder (913) and the second clamping cylinder (919) retract respectively.

3. The device for peony grafting as described in claim 1, characterized in that: A pen-shaped cylinder (921) is provided on the side of the first clamping cylinder (913) or the second clamping cylinder (919). A blade fixing plate (922) is provided at the end of the piston rod of the pen-shaped cylinder (921). A cutting blade (923) is installed on the blade fixing plate (922). The cutting edge of the cutting blade (923) faces the film (10) clamped between the pressing plate (926) and the clamping plate (925). After the piston rod of the pen-shaped cylinder (921) extends, the cutting blade (923) that extends with it can cut the film (10).

4. The device for peony grafting as described in claim 1, characterized in that: A seedling pressing mechanism is provided on both sides of the C-shaped ring. The seedling pressing mechanism includes a seedling pressing cylinder fixing plate (601), a seedling pressing cylinder (602), and a seedling placing platform (603). The seedling pressing cylinder (602) is installed on the seedling pressing cylinder fixing plate (601). The piston rod of the seedling pressing cylinder (602) faces downward, and its end is connected to a flexible pressing pad (604). A seedling placing platform (603) is provided directly below the seedling pressing cylinder (602). The seedling pressing cylinder (602) drives the flexible pressing pad (604) to press down, which can press the rootstock or scion tightly and fix it on the seedling placing platform (603).

5. The device for peony grafting as described in claim 4, characterized in that: The top surface of the seedling platform (603) is provided with a U-shaped groove for placing rootstock or scion. The depth of the U-shaped groove is less than the diameter of the rootstock or scion, so that the flexible pressure pad (604) can contact the upper surface of the rootstock or scion when it is pressed down.

6. The device for peony grafting as described in claim 1, characterized in that: The cutting mechanism includes a base (501), a cutting base plate (511), a tension bolt (502), a cutting cylinder (503), and a seedling seat (506). The cutting cylinder (503) is mounted on the cutting base plate (511), and its piston rod end is connected to a cutting blade (508) facing the seedling seat (506). The top surface of the base (501) is provided with an upwardly extending first connecting part, and the bottom of the cutting base plate (511) is provided with a downwardly extending second connecting part. The second connecting part of the cutting base plate (511) and the first connecting part of the base (501) are connected by a tension bolt (502). The axis of the tension bolt (502) is parallel to the extension direction of the piston rod of the cutting cylinder (503). After the tension bolt (502) is released, the cutting base plate (511) can rotate around the axis of the tension bolt (502) to adjust the angle between the cutting blade (508) and the horizontal plane.

7. The device for peony grafting as described in claim 6, characterized in that: The cutting base plate (511) is provided with a slide rail (507), and the slider (510) that cooperates with the slide rail (507) is fixed with a tool groove (509) for installing the cutting blade (508); the piston rod of the cutting cylinder (503) is connected to the tool groove (509) or the slider (510), and the tool groove (509) and the cutting blade (508) are driven to reciprocate linearly along the slide rail (507) by controlling the extension and retraction of the cutting cylinder (503).

8. The device for peony grafting as described in claim 6, characterized in that: The top surface of the seedling base (506) is provided with a positioning groove (512) for supporting the rootstock or scion. The positioning groove is provided with a pressing block (505). The pressing block (505) is connected to a compression spring (504) provided on the side wall of the positioning groove. The spring force of the compression spring (504) enables the pressing block (505) to press and fix the rootstock or scion.

9. The device for peony grafting as described in claim 8, characterized in that: The part of the seedling holder (506) that is used to clamp the rootstock or scion with the seedling pressing block (505) consists of two relatively separate clamping plates (513), and an opening is formed between the two clamping plates (513) for the cutting blade (508) to pass through.

10. A method of operating the device for peony grafting as described in claim 1, characterized in that: Before fixing the position of the rootstock and scion, the piston rods of the first clamping cylinder (913) and the second clamping cylinder (919) of the incision fixing mechanism (9) are extended relative to each other, the clamping plate (925) is inserted between the two clamping rods (924), and the piston rod of the pressing cylinder (916) drives the pressing plate (926) to extend upward, pressing and fixing the film (10) drawn from the film roll (918) onto the bottom surface of the clamping plate (925) and the clamping rod (924); After the cut rootstock and scion are joined in the inner circle of the C-ring (908) and fixed in position by the seedling pressing mechanism (6), the C-ring (908) is driven to rotate, so that the film (10) is wrapped around the joint position of the rootstock and scion. When the C-ring (908) is about to rotate to the second turn, the film pressing cylinder (916) retracts, the film pressing plate (926) descends to release the film (10), and the first film clamping cylinder (913) and the second film clamping cylinder (919) retract synchronously, so that the film clamping plate (925) and the film clamping rod (924) retract synchronously. The C-shaped ring (908) continues to drive the film roll (918) to rotate and wrap around the rootstock and scion docking position. When it rotates to the last rotation of the preset number of rotations, the first clamping cylinder (913) and the second clamping cylinder (919) extend relative to each other, so that the clamping plate (925) is inserted between the two clamping rods (924). After completing the last rotation of the C-ring (908), the film (10) is wound onto the bottom surface of the clamping plate (925) and the clamping rod (924); the pressing cylinder (916) drives the pressing plate (926) to extend upward and press the film (10) tightly and fix it to the bottom surface of the clamping plate (925) and the clamping rod (924); The pen-shaped cylinder (921) drives the cutting blade (923) to extend forward to cut the film (10). After cutting, the pen-shaped cylinder (921) retracts, the seedling pressing mechanism (6) is released, and the rootstock and scion wrapped and fixed by the film are removed, thus completing one grafting operation.

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