Air suction type mulberry leaf picking method and device

Abstract

The invention discloses an air suction type mulberry leaf picking method and device. The picking method comprises the following steps: step 1, determining the height of mulberry leaves to be picked on mulberry twigs; 2, the air suction side of a roller of the air suction type mulberry leaf picking device is close to an area where mulberry leaves need to be picked, the roller rotates, the air suction side in the roller exhausts air, mulberry leaves are adsorbed to the roller and rotate along with the roller, and when mulberry leaf stalks rotate to the position of a cutter of the air suction type mulberry leaf picking device, the mulberry leaf stalks are cut off by the rotating cutter. Thirdly, after the mulberry leaves with the mulberry leaf stalks cut off rotate by a certain angle along with the roller to leave the air suction area, air is blown from the other side in the roller, and the mulberry leaves are separated from the roller. And 4, collecting the mulberry leaves by using a collecting device. According to the technology, mulberry leaves are conveyed through air suction of the roller, then mulberry leaf stalks are cut to enable the mulberry leaves to be stripped from mulberry twigs, then air is blown to separate the mulberry leaves from the roller, finally, the collecting device is adopted for collecting, and the device has the advantages of being high in picking efficiency, good in quality, convenient to operate and easy to achieve mechanical automatic picking.

Description

Technical Field

[0001] The invention relates to the technical field of mulberry leaf picking, and in particular to an air suction type mulberry leaf picking method and device. Background Art

[0002] Mulberry leaves are the daily food of silkworms and also a kind of medicinal material with high economic and medicinal value. Picking mulberry leaves is to peel the leaves from the mulberry tree manually. When the silkworms grow to the fifth age, they have a large appetite and need to pick a large amount of mulberry leaves every day for feeding. Traditional mulberry leaf picking is mainly done by hand picking, that is, picking one by one by hand, which takes a long time, has high labor intensity, low efficiency, and is time-consuming and laborious. Moreover, long-term picking can easily cause hand injuries to the pickers. This picking method takes up a lot of labor and labor time, and the picking cost is high. In today's social and economic environment, manual picking obviously no longer meets the development requirements of mulberry silkworm breeding and mulberry tree planting. In the prior art, although there are some inventions and creations of mulberry leaf picking tools, which have improved the picking efficiency to a certain extent, for example: 1. Chinese Patent: A mulberry leaf picking device, application number: 202323127130.5, application date: 2023.11.20, abstract: The utility model discloses a mulberry leaf picking device, including a collecting bucket, a collecting pipe is provided on the collecting bucket, a picking mechanism for picking mulberry leaves is provided at the end of the collecting pipe, and the picking mechanism includes two picking heads, one end of the two picking heads is hinged, and the other end is provided with a cutting assembly; when the two picking heads are close to each other, the ends where the cutting assemblies of the picking heads are located are abutted, and the two picking heads are connected to each other. The picking heads form a cavity that can wrap mulberry leaves, and one side of the cavity is provided with an opening, which is connected to a collecting pipe; the collecting barrel is externally connected to an air pump for sucking the picked mulberry leaves into the collecting barrel; the mulberry leaves are wrapped in the two picking heads, the two picking heads are pressed to make the two picking heads close to each other, the petioles of the mulberry leaves are cut off by the cutting assembly, and then the cut mulberry leaves are sucked into the collecting barrel from the collecting pipe by the air pump; the process of manually putting the picked mulberry leaves into the collecting barrel is saved, and the labor intensity of the pickers is reduced.

[0003] 2. Chinese Patent: A Mulberry Leaf Quick Picker, Application Number: 202321591324.8, Application Date: 2023.06.21, Abstract: The utility model relates to a field of picking technology, and discloses a mulberry leaf quick picker. The utility model is provided with a pushing mechanism and a cutting mechanism on the fixed column, and the cutting motor drives the cutting blade on the connecting shaft to rotate, so that the mulberry leaves can be quickly cut and processed, and the cut mulberry leaves move on the inner wall of the connecting tube, and the exhaust fan is used to exhaust the inside of the connecting tube, so that the connecting tube can generate suction, thereby ensuring that the cut mulberry leaves fall onto the baffle along the connecting tube, and the electric start drives the rotating block on the rotating shaft to rotate, so that the mulberry leaves enter the collecting barrel through the drop opening opened on the supporting ring, so as to realize the collection of mulberry leaves, and the mulberry leaves inside the collecting barrel can be taken out through the elastic block connected between the connecting ring 1 and the connecting ring 2, and the elastic block is very convenient for the installation and disassembly of the collecting barrel, and is easy to use.

[0004] 3. Chinese Patent: A drum-type mulberry leaf picking machine, application number: 201810092944.4, application date: 2018.01.31, abstract: The invention discloses a drum-type mulberry leaf picking machine, comprising a support frame, a box body, a picking device, and a lifting device, wherein the support frame is arranged on the box body, and the lifting device is arranged on the support frame; the picking device comprises two groups of picking units, and the picking units comprise a frame, a rotating shaft, a drum, a motor, and a transmission mechanism, wherein the motor A and the transmission mechanism are both arranged on the frame; the frame comprises a working end and a mounting end located at both longitudinal ends; slide rails and slide plates are arranged on the two side walls of the frame, the front end of the slide rails is close to the working end, and the slide plate is mounted on the slide rails; the rotating shaft is mounted on the front end of the slide plate, and the drum is mounted on the rotating shaft; the motor A is connected to the rotating shaft through the transmission mechanism, and the rotating shaft is driven to rotate through the transmission mechanism, thereby driving the drum to rotate; a plurality of groups of inverted U-shaped frames are arranged at intervals along the outer circumference of the drum; a semicircular ring structure is arranged on the horizontal side of the U-shaped frame. The invention has high picking speed, high picking efficiency and convenient use, and can effectively reduce the labor intensity of mulberry farmers and reduce labor costs.

[0005] Through applied research, it is found that although the picking devices of the above-mentioned documents 1 and 2 can improve the picking efficiency, they require hand-held picking work, which is not conducive to realizing automatic picking. The picking machine of document 3 has a complex structure, and it is necessary to move the mulberry branches and transport the mulberry branches into the picking mechanism for picking. The mulberry branches are easily damaged during operation, and the picking quality is poor. It may even tear the mulberry bark and cause the mulberry leaf yield of the mulberry tree to decrease in the later stage. For this reason, a mulberry leaf picking technology with high picking efficiency, good quality and convenient operation is particularly needed. Summary of the invention

[0006] The purpose of the present invention is to provide an air-suction mulberry leaf picking method and device in response to the problems existing in the prior art. The technology adopts a roller to transport mulberry leaves by air suction, then cuts the mulberry petioles to separate the mulberry leaves from the mulberry branches, then blows air to separate the mulberry leaves from the roller, and finally uses a collecting device to collect them. The technology has the advantages of high picking efficiency, good quality, easy operation, and easy mechanical automated picking.

[0007] The present invention is achieved by adopting the following technical solutions: A method for picking mulberry leaves by air suction, the picking steps are as follows: Step 1: Determine the height at which you want to pick mulberry leaves.

[0008] Step 2: Move the suction side of the drum of the air-suction mulberry leaf picking device close to the area where mulberry leaves are to be picked. The drum rotates and the suction side inside the drum draws air to adsorb the mulberry leaves on the drum. As the drum rotates, when the mulberry leaf stalks turn to the cutting knife position of the air-suction mulberry leaf picking device, they are cut off by the rotating cutting knife.

[0009] Step 3: After the mulberry leaves with their petioles cut off rotate with the drum to a certain angle and leave the air suction area, air is blown from the other side of the drum to separate the mulberry leaves from the drum.

[0010] Step 4: Use the collecting device to collect the mulberry leaves.

[0011] Further preferred: the air-suction mulberry leaf picking device includes a support plate and a roller, a gear transmission compartment is provided on one side of the support plate, a roller driving gear is vertically rotatably installed in the gear transmission compartment, the roller driving gear is connected to the support plate through a bearing and a rotating shaft, the rotating shaft is fixed to the support plate, and a hollow convex shaft can also be provided on the roller driving gear for mounting with the inner ring of the bearing, the outer ring of the bearing is connected to the support plate, the roller driving gear is rotatably connected to the rotating shaft through the bearing, and one end of the separating cylinder shaft passes through the hollow convex shaft and is fixedly connected to the support plate; a protruding bearing mounting position can also be directly provided on the support plate, the inner ring of the bearing is mounted on the bearing mounting position, and the roller driving gear A through hole that cooperates with the outer ring of the bearing is provided at the center of the wheel, and one end of the separating cylinder shaft is directly fixedly connected to the end face of the bearing mounting position; a plurality of ventilation holes are provided on the cylinder wall of the drum, and the ventilation holes are preferably evenly distributed on the drum, one end of the drum is sealed and fixedly connected to the outer side of the drum driving gear, a flange connecting surface is provided at one end of the drum, and is flange-connected to the drum, a sealed bearing is installed on the inner wall of the other end of the drum, and a bearing seat is installed on the inner ring of the sealed bearing, and a plurality of separating cylinders are correspondingly installed in the drum driving gear between the bearing seat and the support plate through a plurality of separating cylinder shafts, one end of the separating cylinder shaft is fixedly connected to the support plate, and the other end of the separating cylinder shaft is connected to the bearing seat, and the plurality of separating cylinders will The left and right sides of the roller driving gear are divided into an air suction bin and an air blowing bin. An auxiliary conveying drum for cooperating with the roller to convey mulberry leaves is installed below the roller between the air suction bin and the air blowing bin through an auxiliary conveying drum shaft. An exhaust pipe connected to the air suction bin and an air blowing pipe connected to the air blowing bin are provided on the support plate. The roller driving gear is meshed with a driving gear installed on the driving shaft. The driving shaft is connected and installed with an electric device. The electric device includes a motor and a reducer. The power output by the motor drives the driving shaft to rotate after passing through the reducer, thereby driving the driving gear to drive the roller driving gear to rotate. The bottom of the roller driving gear is meshed with the cutter driving gear through a transmission gear. The cutter driving gear is installed on the cutter. The cutter shaft is mounted on the support plate, and a cutter for cutting mulberry leaf petioles is mounted on the cutter shaft. The cutter shaft is rotatably mounted on the support plate through a bearing, and the cutter shaft can also be fixedly mounted on the support plate. The cutter driving gear is rotatably connected to the cutter shaft through a bearing, and the cutter driving gear is fixedly connected to a cutter drum rotatably mounted on the cutter shaft. The cutter is mounted on the cutter drum, and the cutter driving gear directly drives the cutter drum to rotate, thereby driving the cutter to rotate and cut the mulberry leaf petioles. The cutting edge of the cutter is close to the outer periphery of the drum. After the cutter cuts the mulberry leaf petiole, even if it encounters the problem of not being able to cut it, a large part of it has been cut, and the mulberry leaf petiole is relatively brittle and soft, and will be torn off under the clamping and conveying of the drum and the auxiliary conveying drum.

[0012] Further preferred: the end of the separation cylinder shaft away from the support plate is connected and supported by a vertically arranged end cover plate, the auxiliary conveying drum shaft and the cutter shaft are also connected and supported by the end cover plate, and the bottom and top ends of the end cover plate are fixedly connected to the support plate through connecting plates respectively.

[0013] Further preferably, a fixed guide plate is provided between the end cover plate and the support plate at the lower part of the air suction bin of the drum, and the upper end of the fixed guide plate is bent toward the air blowing bin side of the drum.

[0014] Further preferably, one end of the auxiliary conveying drum shaft is fixedly connected to the support plate, the auxiliary conveying drum is rotatably connected to the auxiliary conveying drum shaft via a bearing, and rubber sleeves are arranged at intervals on the auxiliary conveying drum.

[0015] Further preferred: a combing plate for scraping mulberry leaves away from the auxiliary conveying drum is installed between the spaced rubber sleeves, and both ends of the combing plate are fixedly connected to the end cover plate and the support plate respectively.

[0016] Further preferred: the separation cylinder shaft includes a first separation cylinder shaft, a second separation cylinder shaft and a third separation cylinder shaft, the separation cylinder includes a first separation cylinder, a second separation cylinder and a second separation cylinder, the first separation cylinder shaft, the second separation cylinder shaft and the third separation cylinder shaft are arranged in sequence from top to bottom on the drum, one end of the first separation cylinder shaft, the second separation cylinder shaft and the third separation cylinder shaft are respectively fixedly connected to the support plate, and the other end thereof is provided with a threaded shaft body for being fixedly connected to the bearing seat or the end cover plate with a nut, and the first separation cylinder shaft, the second separation cylinder shaft and the third separation cylinder shaft are respectively provided with corresponding first separation cylinder, second separation cylinder and second separation cylinder rotation shafts. The rubber-coated bearings are dynamically connected, the first separation cylinder, the second separation cylinder and the second separation cylinder are sleeved on the corresponding first separation cylinder shaft, the second separation cylinder shaft and the third separation cylinder shaft, the rubber-coated bearings are respectively located on the separation shafts at both ends of the separation cylinders and separated by spacers, the outer peripheries of the first separation cylinder and the second separation cylinder are in contact with the inner wall of the drum, the second separation cylinder is in contact with the outer peripheries of the first separation cylinder and the second separation cylinder, the first separation cylinder, the second separation cylinder and the second separation cylinder separate the space of the suction bin in the drum into a space larger than the space of the blowing bin, the outer peripheries of the first separation cylinder and the second separation cylinder are always in contact with the inner wall of the drum, and the positions of the suction bin and the blowing bin will not be changed when the drum rotates Further preferably, the first separating cylinder, the second separating cylinder and the second separating cylinder are respectively covered with rubber sleeves.

[0017] The technology of this application is to determine the height of the mulberry branch to pick the mulberry leaves; bring the suction side of the drum of the air-suction mulberry leaf picking device close to the area where the mulberry leaves are to be picked, rotate the drum and evacuate the suction side in the drum, so that the mulberry leaves are adsorbed on the drum, and follow the rotation of the drum. When the mulberry petiole turns to the cutter position of the air-suction mulberry leaf picking device, it is cut by the rotating cutter; after the mulberry leaves with the cut mulberry petiole follow the drum to rotate a certain angle to leave the suction area, the other side of the drum blows air to separate the mulberry leaves from the drum; and the mulberry leaves are collected using a collecting device. The air-suction mulberry leaf picking device used has an ingenious structure and has the advantages of high picking efficiency, good quality, convenient operation, and easy mechanical automation picking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an air-suction mulberry leaf picking device; Figure 2 for Figure 1 AA section structure schematic diagram; Figure 3 for Figure 1 BB section structure schematic diagram; Figure 4 It is a schematic diagram of the three-dimensional structure of the air-suction mulberry leaf picking device from the first perspective; Figure 5 It is a schematic diagram of the three-dimensional structure of the air-suction mulberry leaf picking device from a second perspective; Figure 6 A schematic diagram of the three-dimensional structure of the air-suction mulberry leaf picking device without the end cover; Figure 7 The figure is a schematic diagram of the installation structure of the separation cylinder; The names of the parts corresponding to the serial numbers in the figure are: 1. Support plate, 2. Gear transmission bin, 3. Exhaust pipe, 4. Blowing pipe, 5. Electric device, 6. Roller, 7. End cover plate, 8. First separation cylinder shaft, 9. Second separation cylinder shaft, 10. Third separation cylinder shaft, 11. Auxiliary conveying drum shaft, 12. Cutter shaft, 13. Fixed guide plate, 14. First separation cylinder, 15. Second separation cylinder, 16. Second separation cylinder, 17. Cutter, 18. Auxiliary conveying drum, 19. Comb plate, 20. Drive shaft, 21. Drive gear, 22. Roller drive gear, 23. Cutter drive gear, 24. Transmission gear, 25. Bearing seat, 26. Sealed bearing, 27. Rubber-coated bearing, 28. Spacer, 29. Rubber sleeve. DETAILED DESCRIPTION

[0019] The technical solutions in the invention are clearly and completely described below in conjunction with the embodiments. The described embodiments are only a part of the present invention, rather than all the embodiments. Example

[0020] A method for picking mulberry leaves by air suction, the picking steps are as follows: Step 1: Determine the height at which you want to pick mulberry leaves.

[0021] Step 2: Move the suction side of the drum of the air-suction mulberry leaf picking device close to the area where mulberry leaves are to be picked. The drum rotates and the suction side inside the drum draws air to adsorb the mulberry leaves on the drum. As the drum rotates, when the mulberry leaf stalks turn to the cutting knife position of the air-suction mulberry leaf picking device, they are cut off by the rotating cutting knife.

[0022] Step 3: After the mulberry leaves with their petioles cut off rotate with the drum to a certain angle and leave the air suction area, air is blown from the other side of the drum to separate the mulberry leaves from the drum.

[0023] Step 4: Use the collecting device to collect the mulberry leaves.

[0024] The air suction mulberry leaf picking device comprises a support plate 1 and a roller 6, a gear transmission bin 2 is provided on one side of the support plate 1, a roller driving gear 22 is vertically rotatably installed in the gear transmission bin 2, the roller driving gear 22 is connected to the support plate 1 through a bearing and a rotating shaft, the rotating shaft is fixed on the support plate 1, and the roller driving gear 22 is rotatably connected to the rotating shaft through a bearing; a plurality of air vents are provided on the wall of the roller 6, and the air vents are preferably evenly distributed on the roller, one end of the roller 6 is sealed and fixedly connected to the outer side of the roller driving gear 22, a flange connection surface is provided at one end of the roller 6, and the inner wall of the other end of the roller 6 is flange-connected to the roller 6, A sealed bearing 26 is installed, and a bearing seat 25 is installed on the inner ring of the sealed bearing 26. A plurality of separation cylinders are correspondingly installed in the roller drive gear 22 between the bearing seat 25 and the support plate 1 through a plurality of separation cylinder shafts. One end of the separation cylinder shaft passes through the rotating shaft of the roller drive gear 22 and is fixedly connected to the support plate 1. The other end of the separation cylinder shaft is connected to the bearing seat 25. The plurality of separation cylinders separate the left and right sides of the roller drive gear 22 into an air suction bin and an air blowing bin. An auxiliary conveying drum 18 for cooperating with the roller 6 to convey mulberry leaves is installed below the roller 6 between the air suction bin and the air blowing bin through an auxiliary conveying drum shaft 11. A shaft 18 for cooperating with the roller 6 to convey mulberry leaves is provided on the support plate 1. The roller drive gear 22 is meshed with a drive gear 21 installed on the drive shaft 20, and the drive shaft 20 is connected to an electric device 5. The electric device 5 includes a motor and a reducer. The power output by the motor drives the drive shaft 20 to rotate after passing through the reducer, thereby driving the drive gear 21 to drive the roller drive gear 22 to rotate. The lower part of the roller drive gear 22 is meshed with the cutter drive gear 23 through a transmission gear 24. The cutter drive gear 23 is installed on the cutter shaft 12. A cutter 17 for cutting off the mulberry petiole is installed on the cutter shaft 12. The cutter shaft 12 is rotatably mounted on the support plate through a bearing. 1, the cutter shaft 12 can also be fixedly installed on the support plate 1, the cutter driving gear 23 is rotatably connected to the cutter shaft 12 through a bearing, the cutter driving gear 23 is fixedly connected to the cutter drum rotatably installed on the cutter shaft 12, the cutter 17 is installed on the cutter drum, the cutter driving gear 23 directly drives the cutter drum to rotate, thereby driving the cutter 17 to rotate to cut the mulberry petiole, the cutting edge of the cutter 17 is close to the outer periphery of the drum 6, when the cutter 17 cuts the mulberry petiole, even if it encounters the problem of continuous cutting, a large part of it has been cut, and the mulberry petiole is relatively brittle and soft, and it will be torn off under the clamping and conveying of the drum 6 and the auxiliary conveying drum 18.

[0025] The end of the separation cylinder shaft away from the support plate 1 is connected and supported by a vertically arranged end cover plate 7, and the auxiliary conveying drum shaft 11 and the cutter shaft 12 are also connected and supported by the end cover plate 7. The bottom and top ends of the end cover plate 7 are fixedly connected to the support plate 1 through connecting plates respectively.

[0026] A fixed guide plate 13 is provided between the end cover plate 7 and the support plate 1 at the lower part of the air suction bin of the drum 6 , and the upper end of the fixed guide plate 13 is curved toward the air blowing bin side of the drum 6 .

[0027] One end of the auxiliary conveying drum shaft 11 is fixedly connected to the support plate 1 , and the auxiliary conveying drum 18 is rotatably connected to the auxiliary conveying drum shaft 11 via a bearing, and rubber sleeves are arranged at intervals on the auxiliary conveying drum 18 .

[0028] A combing plate 19 for scraping mulberry leaves off the auxiliary conveying drum 18 is installed between the spaced rubber sleeves, and both ends of the combing plate 19 are fixedly connected to the end cover plate 7 and the support plate 1 respectively.

[0029] The separation cylinder shaft comprises a first separation cylinder shaft 8, a second separation cylinder shaft 9 and a third separation cylinder shaft 10, and the separation cylinder comprises a first separation cylinder 14, a second separation cylinder 15 and a second separation cylinder 16. The first separation cylinder shaft 8, the second separation cylinder shaft 9 and the third separation cylinder shaft 10 are arranged in sequence from top to bottom on the drum 6. One end of the first separation cylinder shaft 8, the second separation cylinder shaft 9 and the third separation cylinder shaft 10 are respectively fixedly connected to the support plate 1, and the other end thereof is provided with a threaded shaft body for being fixedly connected to the bearing seat 25 or the end cover plate 7 by a nut. The first separation cylinder shaft 8, the second separation cylinder shaft 9 and the third separation cylinder shaft 10 are respectively provided with a threaded shaft body corresponding to the first separation cylinder shaft 1. 14, the second separating cylinder 15 and the second separating cylinder 16 are rotatably connected with the rubber-coated bearing 27, the first separating cylinder 14, the second separating cylinder 15 and the second separating cylinder 16 are mounted on the corresponding first separating cylinder shaft 8, the second separating cylinder shaft 9 and the third separating cylinder shaft 10, the rubber-coated bearing 27 are respectively located on the separating shafts at both ends of the separating cylinders and separated by the spacer sleeve 28, the outer periphery of the first separating cylinder 14 and the second separating cylinder 16 contacts with the inner wall of the drum 6, the second separating cylinder 15 contacts with the outer periphery of the first separating cylinder 14 and the second separating cylinder 16, the first separating cylinder 14, the second separating cylinder 15 and the second separating cylinder 16 separate the space of the suction bin in the drum 6 into a space larger than the space of the blowing bin.

[0030] The first separation cylinder 14 , the second separation cylinder 15 and the third separation cylinder 16 are respectively covered with rubber sleeves 29 .

[0031] The working process of the air suction mulberry leaf picking device is as follows: the support plate 1 is automatically raised and lowered and installed on the walking machine to drive the walking. The automatic lifting can be controlled by electric push rod, screw lifting, hydraulic or air pressure control, etc. The suction pipe 3 is connected to the air inlet of the exhaust fan, and the blowing pipe 4 is connected to the air outlet of the exhaust fan. The blowing pipe 4 can also be connected to a fan alone to blow air from the blowing pipe 4 into the blowing bin. The power output by the electric device 5 drives the driving shaft 20 to rotate, thereby driving the driving gear 21 to drive the roller driving gear 22 to rotate, and also drives the cutter driving gear 23 to rotate through the transmission gear 24, so as to realize the rotation of the cutter 17. Determine the height of the mulberry branch to pick mulberry leaves, the suction bin side of the drum 6 is close to the area where the mulberry leaves are to be picked, and the mulberry leaves are adsorbed on the drum 6 due to the suction bin suction, and rotate with the drum 6. When the mulberry leaf stalk is turned to the position of the cutter 17, it is cut by the rotating cutter 17. After the mulberry leaves with the cut mulberry petioles rotate with the drum 6 at a certain angle to leave the suction area, the drum 6 blows air in the blowing chamber to separate the mulberry leaves from the drum 6. The separated mulberry leaves are collected by a collecting device installed on the walking machine, and the collecting device can adopt an air suction collecting device based on the principle of a vacuum cleaner.

[0032] The above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. An air suction mulberry leaf picking method, characterized in that: The picking steps are: Step 1: Determine the height of the mulberry branches for picking mulberry leaves; Step 2: The suction side of the drum of the air-suction mulberry leaf picking device is brought close to the area where mulberry leaves are to be picked, the drum rotates and the suction side in the drum draws air, so that the mulberry leaves are adsorbed on the drum. As the drum rotates, when the mulberry leaf petiole turns to the cutting knife position of the air-suction mulberry leaf picking device, it is cut by the rotating cutting knife; Step 3: After the mulberry leaves with their petioles cut off follow the drum to leave the air suction area, air is blown from the other side of the drum to separate the mulberry leaves from the drum; Step 4: Use the collecting device to collect the mulberry leaves.

2. The air suction mulberry leaf picking method according to claim 1, characterized in that: The air suction mulberry leaf picking device comprises a support plate (1) and a roller (6), a gear transmission bin (2) being arranged on one side of the support plate (1), a roller driving gear (22) being vertically rotatably mounted in the gear transmission bin (2), a plurality of ventilation holes being arranged on the wall of the roller (6), one end of the roller (6) being sealed and fixedly connected to the outer side of the roller driving gear (22), a sealed bearing (26) being installed on the inner wall of the other end of the roller (6), a bearing seat (25) being installed on the inner ring of the sealed bearing (26), a plurality of separation barrels being correspondingly mounted in the roller driving gear (22) between the bearing seat (25) and the support plate (1) via a plurality of separation barrel shafts, one end of the separation barrel shaft being fixedly connected to the support plate (1), the other end of the separation barrel shaft being connected to the bearing seat (25), and the plurality of separation barrels being arranged on the inner wall of the roller (6). The left and right sides of the roller driving gear (22) are divided into an air suction chamber and an air blowing chamber. An auxiliary conveying drum (18) for cooperating with the roller (6) to convey mulberry leaves is installed below the roller (6) between the air suction chamber and the air blowing chamber via an auxiliary conveying drum shaft (11). An air extraction pipe (3) connected to the air suction chamber and an air blowing pipe (4) connected to the air blowing chamber are provided on the support plate (1). The roller driving gear (22) is meshed with a driving gear (21) installed on a driving shaft (20). An electric device (5) is connected and installed on the driving shaft (20). The roller driving gear (22) is meshed with a cutter driving gear (23) via a transmission gear (24). The cutter driving gear (23) is installed on a cutter shaft (12). A cutter (17) for cutting off mulberry leaf petioles is installed on the cutter shaft (12).

3. The air suction mulberry leaf picking method according to claim 2, characterized in that: The end of the separation cylinder shaft away from the support plate (1) is connected and supported by a vertically arranged end cover plate (7), the auxiliary conveying rotating cylinder shaft (11) and the cutter shaft (12) are also connected and supported by the end cover plate (7), and the bottom and top ends of the end cover plate (7) are fixedly connected to the support plate (1) via connecting plates.

4. The air suction mulberry leaf picking method according to claim 3 is characterized in that: A fixed guide plate (13) is provided between the end cover plate (7) and the support plate (1) at the lower part of the air suction bin of the roller (6), and the upper end of the fixed guide plate (13) is curved toward the air blowing bin side of the roller (6).

5. The air suction mulberry leaf picking method according to claim 2, characterized in that: One end of the auxiliary conveying drum shaft (11) is fixedly connected to the support plate (1), the auxiliary conveying drum (18) is rotatably connected to the auxiliary conveying drum shaft (11) via a bearing, and rubber sleeves are arranged at intervals on the auxiliary conveying drum (18).

6. The air suction mulberry leaf picking method according to claim 5, characterized in that: A combing plate (19) for scraping mulberry leaves off the auxiliary conveying drum (18) is installed between the spaced rubber sleeves, and two ends of the combing plate (19) are fixedly connected to the end cover plate (7) and the support plate (1) respectively.

7. The air suction mulberry leaf picking method according to claim 2, characterized in that: The separation cylinder shaft comprises a first separation cylinder shaft (8), a second separation cylinder shaft (9) and a third separation cylinder shaft (10); the separation cylinder comprises a first separation cylinder shaft (14), a second separation cylinder shaft (15) and a second separation cylinder shaft (16); the first separation cylinder shaft (8), the second separation cylinder shaft (9) and the third separation cylinder shaft (10) are arranged in sequence from top to bottom on the drum (6); one end of the first separation cylinder shaft (8), the second separation cylinder shaft (9) and the third separation cylinder shaft (10) are respectively fixedly connected to the support plate (1); the other end thereof is provided with a threaded shaft body for being fixedly connected to the bearing seat (25) or the end cover plate (7) by a nut; the first separation cylinder shaft (8), the second separation cylinder shaft (9) and the third separation cylinder shaft (10) are respectively provided with a threaded shaft body corresponding to the first separation cylinder (14); ), the second separating cylinder (15) and the second separating cylinder (16) are rotatably connected to the rubber-coated bearing (27); the first separating cylinder (14), the second separating cylinder (15) and the second separating cylinder (16) are sleeved on the corresponding first separating cylinder shaft (8), the second separating cylinder shaft (9) and the third separating cylinder shaft (10); the rubber-coated bearing (27) is respectively located on the separating shafts at both ends of the separating cylinders and separated by the spacer sleeve (28); the outer peripheries of the first separating cylinder (14) and the second separating cylinder (16) are in contact with the inner wall of the roller (6); the second separating cylinder (15) is in contact with the outer peripheries of the first separating cylinder (14) and the second separating cylinder (16); the first separating cylinder (14), the second separating cylinder (15) and the second separating cylinder (16) separate the roller (6) into an air suction chamber space larger than the air blowing chamber space.

8. The air suction mulberry leaf picking method according to claim 7, characterized in that: The first separation cylinder (14), the second separation cylinder (15) and the second separation cylinder (16) are each respectively provided with a rubber sleeve (29).

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