Rotary lifting cutting type tea leaf tender tip picking device and method

Abstract

The invention relates to a rotary lifting cutting type tea leaf tender tip picking device and method.The rotary lifting cutting type tea leaf tender tip picking device comprises a rear shell and a supporting plate arranged on the rear shell, the supporting plate is provided with a first arc-shaped plate and a second arc-shaped plate, the first arc-shaped plate is provided with a first arc-shaped sliding groove, the second arc-shaped plate is provided with a second arc-shaped sliding groove, and a driving lifting cutter is slidably arranged in the first arc-shaped sliding groove; a driven lifting cutter is arranged in the second arc-shaped sliding groove in a sliding mode, a driving mechanism is further arranged on the supporting plate, and an elastic component abutting against the driven lifting cutter is arranged in the second arc-shaped sliding groove. A negative pressure suction hole is formed in the position, between the first arc-shaped plate and the second arc-shaped plate, of the supporting plate, a negative pressure air pipe connected with the negative pressure suction hole is arranged in the rear shell, the negative pressure air pipe is connected with a collecting box through a first connecting pipe, and the collecting box is connected with negative pressure equipment through a second connecting pipe. The high-quality tea picking device can efficiently pick famous high-quality tea in a low-damage and low-loss mode.

Description

Technical Field

[0001] The invention relates to the technical field of picking young tea leaves, and in particular to a rotary lifting and cutting type young tea leaves picking device and method. Background Art

[0002] The fresh leaf picking process in tea production has always been faced with problems such as high labor intensity and low work efficiency, especially the picking of famous and high-quality teas has always been mainly done by traditional pure manual work. The picking requirements of famous and high-quality teas are too high, and most of them are picked in the form of whole buds, one bud and one leaf, one bud and two leaves, etc. Traditional tea-picking machines or portable tea garden pruning machines have a high picking breakage rate and poor tea quality, which cannot meet their performance indicators.

[0003] The existing technology uses rotary cutting and shearing methods. Rotary cutting is complex and has a low safety factor. Too fast a rotation speed will increase the damage rate of high-quality tea, affecting product quality. Rotary cutting also causes great damage to tea stems, which will affect the growth of tea trees. Shearing involves friction between tools, and the tool will be severely worn after long-term work, which will also affect the quality of picking. The cost of replacing the tool is high, and it is inconvenient to collect the tea leaves after picking. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a rotary lifting and cutting type tea leaf tender tip picking device and method.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a rotary lifting and cutting type tea tender tip picking device, comprising a rear shell and a support plate arranged on the rear shell, a first arc plate and a second arc plate are arranged on the support plate, the first arc plate has a first arc slide groove, the second arc plate has a second arc slide groove, an active lifting and cutting knife is slidably arranged in the first arc slide groove, a driven lifting and cutting knife is slidably arranged in the second arc slide groove, a driving mechanism is also arranged on the support plate, the driving mechanism is used to drive the active lifting and cutting knife to slide back and forth along the second arc slide groove to realize the closing or opening of the active lifting and cutting knife and the driven lifting and cutting knife, and an elastic component that contacts the driven lifting and cutting knife is arranged in the second arc slide groove; A negative pressure suction hole is provided on the support plate between the first arc plate and the second arc plate, a negative pressure air duct connected to the negative pressure suction hole is provided in the rear shell, the negative pressure air duct is connected to the collection box through the first connecting pipe, and the collection box is connected to the negative pressure equipment through the second connecting pipe.

[0006] As a preferred solution, the active lifting and cutting knife is provided with a first guide rod, the first arc plate is provided with a first waist-shaped through groove which is slidably matched with the first guide rod, and the first guide rod is slidably inserted into the first waist-shaped through groove.

[0007] As a preferred solution, the driven cutting knife is provided with a second guide rod, the second arc plate is provided with a second waist-shaped through groove which is slidably matched with the second guide rod, and the second guide rod is slidably inserted into the second waist-shaped through groove.

[0008] As a preferred solution, a front shell is provided on the support plate, and a driving mechanism is arranged in the front shell. The driving mechanism includes a driving motor, a transmission shaft rotatably arranged on the support plate, and a gear arranged on the transmission shaft. The transmission shaft is connected to the output shaft of the driving motor. The gear is a fan-shaped local gear, and the angle of its fan-shaped local teeth is 90 degrees. The active lifting and cutting knife is provided with arc teeth meshing with the gear.

[0009] As a preferred solution, the elastic component includes a first support rod and a second support rod, the first support rod is provided with a plurality of arc-shaped outer sleeves, the second support rod is provided with an arc-shaped inner plate slidably nested in the arc-shaped outer sleeves, and an elastic member is provided between the arc-shaped inner plate and the inner bottom of the arc-shaped outer sleeve.

[0010] As a preferred solution, the elastic member is a spring.

[0011] As a preferred solution, a conical adsorption funnel is provided in the negative pressure suction hole, the large end of the conical adsorption funnel faces outward, and the small end is connected to the negative pressure air duct.

[0012] As a preferred solution, the negative pressure equipment includes a negative pressure fan.

[0013] The present application also provides a method for picking young tea leaves by rotary lifting and cutting, which uses the above-mentioned device for picking young tea leaves by rotary lifting and cutting, and comprises the following steps: S1. The picking staff holds the rear shell and moves the picking device to the position where the tender tea leaves are located, so that the picking position of the tender tea leaves is located between the active lifting and cutting knife and the driven lifting and cutting knife; S2, the driving mechanism drives the active lifting and cutting knife to move along the second arc-shaped slide groove toward the driven lifting and cutting knife, and finally closes the active lifting and cutting knife with the driven lifting and cutting knife to complete the work process of rotary lifting and cutting the tender leaves of the tea leaves; S3. The negative pressure device forms negative pressure in the collection box, so that the tender tea leaves after rotary cutting enter the collection box through the negative pressure suction hole and the negative pressure air duct.

[0014] The beneficial effects of the present application are as follows: 1. The present application can simplify the workflow of manual picking of high-quality tea. The picking and collection of high-quality tea can be completed by only placing the rotary picking device at the target position, which greatly reduces the workload of pickers and promotes the mechanization of picking high-quality tea. It has broad application prospects.

[0015] 2. The present application is provided with a negative pressure suction hole, which is connected to the negative pressure equipment through a negative pressure air duct and a collection box. The negative pressure suction wind generated directly attracts the young tea buds into the collection box. The contact between the young tea buds and the outside world is avoided during the collection process, thereby improving the quality of the famous and high-quality tea, having high collection efficiency, and improving production efficiency.

[0016] 3. The present application is provided with an elastic component. During lifting and cutting, the active lifting and cutting knife moves toward the driven lifting and cutting knife and clamps the tender stems of the tea leaves. The active lifting and cutting knife applies pressure to the driven lifting and cutting knife. When the driven lifting and cutting knife moves upward along the second arc-shaped slide groove, the elastic component squeezes the elastic component. The elastic component applies resistance to the driven lifting and cutting knife. Then the active lifting and cutting knife continues to move along the first arc-shaped groove until the active lifting and cutting knife and the driven lifting and cutting knife contact and close to complete the lifting and cutting process of the tender stems of the tea leaves. After picking is completed, the active lifting and cutting knife no longer applies pressure to the driven lifting and cutting knife, and the elastic component restores its original shape to push the driven lifting and cutting knife back to its initial position. The provision of the elastic component greatly reduces the positive pressure on the stems of the picking part of the famous and high-quality tea, ensures the picking quality of the famous and high-quality tea, and the leaves do not contact the cutting component throughout the process, thereby avoiding leaf damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the driving mechanism of the present invention; Figure 3 It is an exploded schematic diagram of the driving mechanism of the present invention; Figure 4 It is an explosion schematic diagram of the present invention; Figure 5 It is a schematic structural diagram of the elastic component of the present invention.

[0018] Markings in the figure: 1. rear shell, 11. negative pressure air duct, 12. conical adsorption funnel, 13. infrared sensor, 2. support plate, 21. first arc plate, 211. first waist-shaped through groove, 22. second arc plate, 221. second waist-shaped through groove, 23. negative pressure suction hole, 3. active lifting cutter, 31. first guide rod, 32. arc-shaped teeth, 4. driven lifting cutter, 41. second guide rod, 5. front shell, 6. driving mechanism, 61. driving motor, 62. coupling, 63. gear, 64. transmission shaft, 65. support bearing, 66. mounting bearing, 67. mounting shell, 68. first flat key, 69. second flat key, 7. elastic component, 71. second support rod, 711. arc-shaped inner plate, 7. first filter cartridge, 72. first support rod, 721. arc-shaped outer sleeve, 73. elastic component. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] See also Figure 1-5 The present invention provides a rotary lifting and cutting type tea tender leaves picking device, which has a 7-shaped structure as a whole, including a rear shell 1 and a support plate 2 arranged on the rear shell 1, the support plate 2 is provided with a first arc plate 21 and a second arc plate 22, the first arc plate 21 and the second arc plate 22 are both perpendicular to the support plate 2, the first arc plate 21 has a first arc chute, the second arc plate 22 is provided with a second arc chute, an active lifting and cutting knife 3 is slidably provided in the first arc chute, a driven lifting and cutting knife 4 is slidably provided in the second arc chute, and the support plate 2 is also provided with a first arc chute. A driving mechanism 6 is provided, which is used to drive the active lifting and cutting knife 3 to slide back and forth along the second arc-shaped slide groove to realize the closing or opening of the active lifting and cutting knife 3 and the driven lifting and cutting knife 4. An elastic component 7 that contacts the driven lifting and cutting knife 4 is provided in the second arc-shaped slide groove; a negative pressure suction hole 23 is provided on the support plate 2 between the first arc-shaped plate 21 and the second arc-shaped plate 22, and a negative pressure air duct 11 connected to the negative pressure suction hole 23 is provided in the rear shell 1. The negative pressure air duct 11 is connected to the collection box through a first connecting pipe, and the collection box is connected to the negative pressure equipment through a second connecting pipe.

[0021] Among them, combined Figure 1 , Figure 2 and Figure 4 As shown, the active lifting and cutting knife 3 is provided with a first guide rod 31, and the first curved plate 21 is provided with a first waist-shaped through groove 211 that is slidably matched with the first guide rod 31, and the first waist-shaped through groove 211 is arranged along the width direction of the first curved plate 21, and the first guide rod 31 is slidably inserted into the first waist-shaped through groove 211. The driven lifting and cutting knife 4 is provided with a second guide rod 41, and the second curved plate 22 is provided with a second waist-shaped through groove 221 that is slidably matched with the second guide rod 41, and the second guide rod 41 is slidably inserted into the second waist-shaped through groove 221, and the second waist-shaped through groove 221 is arranged along the width direction of the second curved plate 22.

[0022] Specific, combined Figure 1-4As shown, a front shell 5 is provided on the support plate 2, and a mounting hole for the first arc plate 21 and the second arc plate 22 to pass through is provided on the front shell 5. The driving mechanism 6 is arranged in the front shell 5, and the driving mechanism 6 includes a driving motor 61, a transmission shaft 64 rotatably arranged on the support plate 2, and a gear 63 arranged on the transmission shaft 64. The transmission shaft 64 is connected to the output shaft of the driving motor 61. The gear 63 is a fan-shaped local gear, and the angle of the fan-shaped local teeth is 90 degrees. The active lifting cutter 3 is provided with an arc-shaped tooth 32 meshing with the gear 63, and the first arc plate 21 is provided with a notch for exposing the arc-shaped tooth 32 and enabling the arc-shaped tooth 32 to mesh with the gear 63.

[0023] More specifically, the drive motor 61 is an electric motor, the transmission shaft 64 is connected to the output shaft of the drive motor 61 through a coupling 62, the transmission shaft 64 and the output shaft of the drive motor 61 are connected to the coupling 62 through a second flat key 69, the gear 63 is connected to the transmission shaft 64 through a first flat key 68, a positioning hole is provided on the support plate 2, a mounting bearing 66 is provided in the positioning hole, the transmission shaft 64 is passed through the inner ring of the support bearing 65, a mounting shell 67 is provided on the support plate 2 on the side away from the gear 63, the transmission shaft 64 is rotatably connected to the mounting shell 67 through the mounting bearing 66, the outer ring of the mounting bearing 66 is fixedly connected to the inner wall of the mounting shell 67, and the inner ring of the mounting bearing 66 is fixedly connected to the transmission shaft 64.

[0024] The driven cutting knife 4 has a blade, and the end of the second waist-shaped through groove 221 close to the blade is the first end, and the end away from the blade is the second end. Figure 4 and 5 As shown, the elastic component 7 includes a first support rod 72 and a second support rod 71, the first support rod 72 is provided with a plurality of arc-shaped outer sleeves 721, the second support rod 72 is provided with an arc-shaped inner plate 711 slidably nested in the arc-shaped outer sleeve 721, and an elastic member 73 is provided between the arc-shaped inner plate 711 and the inner bottom of the arc-shaped outer sleeve 721. The elastic member 73 is a spring.

[0025] In addition, the elastic member 73 has a compressed state or a released state. When the elastic member 73 is in the compressed state, the second guide rod 41 abuts against the second end of the second waist-shaped through groove 221. When the elastic member 73 is in the released state, the second guide rod 41 abuts against the first end of the first waist-shaped through groove 211. It should be noted that the parts not described in detail in this application are all prior art.

[0026] During the lifting and cutting process, under the action of the driving mechanism 6, the active lifting and cutting knife 3 moves toward the driven lifting and cutting knife 4 and clamps the stems of the tender tea leaves. The active lifting and cutting knife 3 applies pressure to the driven lifting and cutting knife 4. When the driven lifting and cutting knife 4 moves upward along the second arc-shaped slide groove, it squeezes the elastic component 7. The elastic component 7 applies resistance to the driven lifting and cutting knife, and then the active lifting and cutting knife 4 continues to move along the first arc-shaped groove until the active lifting and cutting knife 4 and the driven lifting and cutting knife 3 are in contact and closed, completing the lifting and cutting process of rotating and cutting the tender tea leaves. At this time, the active lifting and cutting knife 4 and the driven lifting and cutting knife 3 are completely in contact and cut off the stems of the tender tea leaves, and the elastic component 73 is in a compressed state, and the tender tea leaves fall on the inner sides of the active lifting and cutting knife 4 and the driven lifting and cutting knife 3. After picking is completed, the active lifting and cutting knife 3 no longer applies pressure to the driven lifting and cutting knife 4, and the elastic component 7 restores its original shape to push the driven lifting and cutting knife 4 to rebound to the initial position. At this time, the elastic component 73 is in a released state. The elastic component 7 is provided to greatly reduce the positive pressure on the stems of the high-quality tea picking part, thereby ensuring the picking quality of the high-quality tea. The leaves do not contact the cutting components throughout the entire process, thereby avoiding leaf damage. In addition, during the rotary cutting process, the elastic component 7 applies resistance to the movement of the driven cutting knife 4, thereby ensuring that there is sufficient shear force during the cutting process, and the driven cutting knife 4 rebounds back to its original position after the picking process is completed.

[0027] In addition, a conical adsorption funnel 12 is inserted into the negative pressure suction hole 23. The conical adsorption funnel 12 is a hollow structure. The large end of the conical adsorption funnel 12 faces outward, and the small end is connected to the negative pressure air duct 11. The negative pressure equipment includes a negative pressure fan. A blocking hole is provided on the collection box, and the second connecting pipe is connected to the blocking hole. A filter is provided at the blocking hole. The filter is provided to prevent tea from being sucked into the negative pressure equipment. The collection box is also provided with a material taking door. The present application is provided with a negative pressure suction hole 23. The negative pressure suction hole 23 is connected to the negative pressure equipment through the negative pressure air duct 11 and the collection box. The negative pressure suction wind generated directly attracts the tea buds into the collection box. During the collection process, the tea buds are prevented from contacting with the outside world, thereby improving the quality of famous and high-quality teas, and the collection efficiency is high, thereby improving production efficiency.

[0028] The present invention also provides a method for picking young tea leaves by rotary lifting and cutting, which uses the above-mentioned device for picking young tea leaves by rotary lifting and cutting, and comprises the following steps: S1, the picking staff holds the rear shell 1 and moves the picking device to the position where the tender tea leaves are located, so that the picking position of the tender tea leaves is located between the active lifting and cutting knife 3 and the driven lifting and cutting knife 4; S2, the driving mechanism 6 drives the active lifting and cutting knife 3 to move along the second arc-shaped slide groove toward the driven lifting and cutting knife 4, and finally closes the active lifting and cutting knife 3 and the driven lifting and cutting knife 4 to complete the work process of rotating and cutting the tender leaves of the tea leaves; S3, the negative pressure device forms a negative pressure in the collection box, so that the tender leaves of the tea leaves after rotary cutting enter the collection box through the negative pressure suction hole 23 and the negative pressure air duct 11, and the picking of the tender leaves of the tea leaves is completed.

[0029] The present application also includes a controller and an infrared sensor 13. The infrared sensor 13 is disposed on the rear housing 1. The controller includes a PLC controller. The drive motor 61, the negative pressure fan and the infrared sensor 13 are all electrically connected to the controller. When the infrared sensor 13 detects a human hand signal, the PLC controller is used to control the drive motor 61 and the negative pressure fan to not work after receiving the signal transmitted by the infrared sensor 13. When the infrared sensor 13 detects a human hand leaving signal, the PLC controller is used to control the drive motor 61 and the negative pressure fan to work.

[0030] Specifically, in step S1, the picker holds the back shell 1 and holds the infrared sensor 13 with his fingers. In step S2, the picker removes his fingers from the infrared sensor 13, and the PLC controller controls the drive motor 61 and the negative pressure fan to work. The drive motor 61 drives the transmission shaft 64 to rotate, and the gear 63 rotates accordingly. Since the gear 63 is engaged with the arc-shaped teeth 32, the active lifting and cutting knife 3 is driven to move along the first arc-shaped slide groove toward the driven lifting and cutting knife 4. In step S3, the tender tea leaves after rotary lifting and cutting fall on the inner side of the arc-shaped receiving knife formed after the active lifting and cutting knife 3 and the driven lifting and cutting knife 4 are closed and contacted, and enter the collection box through the negative pressure suction hole 23 and the negative pressure air duct 11 under the action of the negative pressure suction wind generated by the negative pressure equipment. The present application can simplify the workflow of manual picking of high-quality tea. Only by placing the rotary picking device at the target position can the picking and collection of high-quality tea be completed, which greatly reduces the workload of pickers and promotes the mechanization of picking high-quality tea. The application has broad application prospects.

[0031] Of course, the present invention is not limited to the above-described embodiments. Several other embodiments based on the design concept of the present invention are also provided below.

[0032] For example, in other embodiments, different from the embodiments described above, in this embodiment, the first arc plate 21 and the second arc plate 22 are integrally formed to form an annular sleeve, a notch is provided on the annular sleeve, and a first arc groove that slides with the active lifting and cutting knife 3 and a second arc groove that slides with the driven lifting and cutting knife 4 are formed at both ends of the notch.

[0033] It should be noted that the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. A rotary lifting and cutting type tea leaf tender bud picking device, characterized in that: The invention comprises a rear shell (1) and a support plate (2) arranged on the rear shell (1), wherein a first arc plate (21) and a second arc plate (22) are arranged on the support plate (2), wherein the first arc plate (21) has a first arc chute, and the second arc plate (22) has a second arc chute, wherein an active lifting and cutting knife (3) is slidably arranged in the first arc chute, and a driven lifting and cutting knife (4) is slidably arranged in the second arc chute, and a driving mechanism (6) is further arranged on the support plate (2), wherein the driving mechanism (6) is used for driving the active lifting and cutting knife (3) to slide back and forth along the second arc chute so as to realize the closing or opening of the active lifting and cutting knife (3) and the driven lifting and cutting knife (4), and wherein an elastic component (7) is arranged in the second arc chute to contact with the driven lifting and cutting knife (4); A negative pressure suction hole (23) is provided on the support plate (2) between the first curved plate (21) and the second curved plate (22); a negative pressure air duct (11) connected to the negative pressure suction hole (23) is provided in the rear shell (1); the negative pressure air duct (11) is connected to the collection box via a first connecting pipe, and the collection box is connected to the negative pressure device via a second connecting pipe.

2. The rotary lifting and cutting type tea leaf tender tip picking device according to claim 1, characterized in that: The active lifting and cutting knife (3) is provided with a first guide rod (31), the first arc-shaped plate (21) is provided with a first waist-shaped through groove (211) slidably matched with the first guide rod (31), and the first guide rod (31) is slidably inserted into the first waist-shaped through groove (211).

3. The rotary lifting and cutting type tea leaf tender tip picking device according to claim 1, characterized in that: The driven cutting knife (4) is provided with a second guide rod (41), the second arc-shaped plate (22) is provided with a second waist-shaped through groove (221) slidably matched with the second guide rod (41), and the second guide rod (41) is slidably inserted into the second waist-shaped through groove (221).

4. The rotary lifting and cutting type tea leaf tender tip picking device according to claim 1, characterized in that: A front shell (5) is provided on the support plate (2), and a driving mechanism (6) is provided in the front shell (5). The driving mechanism (6) comprises a driving motor (61), a transmission shaft (64) rotatably provided on the support plate (2), and a gear (63) provided on the transmission shaft (64). The transmission shaft (64) is connected to an output shaft of the driving motor (61). The gear (63) is a sector-shaped partial gear, and the angle of the sector-shaped partial teeth is 90 degrees. The active lifting and cutting knife (3) is provided with an arc-shaped tooth (32) meshing with the gear (63).

5. The rotary lifting and cutting type tea leaf tender tip picking device according to claim 1, characterized in that: The elastic component (7) comprises a first support rod (72) and a second support rod (71); the first support rod (72) is provided with a plurality of arc-shaped outer sleeves (721); the second support rod (72) is provided with an arc-shaped inner plate (711) slidably nested in the arc-shaped outer sleeves (721); and an elastic component (73) is provided between the arc-shaped inner plate (711) and the inner bottom of the arc-shaped outer sleeve (721).

6. The rotary lifting and cutting type tea leaf tender tip picking device according to claim 5, characterized in that: The elastic member (73) is a spring.

7. The rotary lifting and cutting type tea leaf tender tip picking device according to claim 1, characterized in that: A conical adsorption funnel (12) is provided inside the negative pressure suction hole (23), wherein the large end of the conical adsorption funnel (12) faces outwards and the small end is connected to the negative pressure air duct (11).

8. The rotary lifting and cutting type tea leaf tender tip picking device according to claim 1, characterized in that: The negative pressure equipment includes a negative pressure fan.

9. A method for picking young tea leaves by rotary lifting and cutting, characterized in that: The rotary lifting and cutting type tea leaf tender tip picking device according to any one of claims 1 to 8 comprises the following steps: S1, a picking worker holds the rear shell (1) and moves the picking device to the position where the tender tea leaves are located, so that the picking position of the tender tea leaves is located between the active lifting and cutting knife (3) and the driven lifting and cutting knife (4); S2, the driving mechanism (6) drives the active lifting and cutting knife (3) to move along the second arc-shaped slide groove toward the driven lifting and cutting knife (4), and finally closes the active lifting and cutting knife (3) and the driven lifting and cutting knife (4) to complete the work process of rotary lifting and cutting the tender leaves of the tea leaves; S3, the negative pressure device forms a negative pressure in the collection box, so that the tender tea leaves after rotary cutting enter the collection box through the negative pressure suction hole (23) and the negative pressure air duct (11).

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