CN210076510U - Seed sorting device is carried to two cam formula sesame oil machines - Google Patents

Abstract

The utility model discloses a double-cam type betel nut machine seed lifting and sorting device, which comprises a frame (1), a power device (2), a mobile control mechanism (3), a horizontal moving mechanism (4) and a seed lifting mechanism (5); the power device (2) adopts a servo motor to drive a crank link mechanism for transmission, is arranged at the rear part of the rack (1), the movement control mechanism (3) adopts a symmetrical cam-slider combined mechanism and is arranged at the middle lower part of the rack (1), the horizontal movement mechanism (4) adopts a cam-slider combined mechanism and is arranged at the middle upper part of the rack (1), and the seed lifting mechanism (5) adopts a slider indexing mechanism and is arranged above the rack (1). The invention adopts the crank-slider mechanism to match with the double cam mechanism, thereby realizing the function of controlling the seed lifting mechanism (5) to extract the areca nuts from the clamp and convey the areca nuts to a sorting station by rotating 90 degrees. The utility model has the advantages of simple and compact structure, easy dismounting, convenient manufacture, high efficiency and the like.

Description

A double-cam betel nut machine for seed extraction and sorting

technical field

The invention relates to the research field of material transfer, in particular to a betel nut machine seed extraction and sorting device suitable for use in an article assembly line clamped by a clamp.

Background technique

Today, with the increasing demand for betel nut, the production tasks of the betel nut factory are getting heavier and heavier. If the betel nut factory only uses manual processing to process the betel nut, the production pressure of the betel nut factory will only increase in the future. With the progress of society, the integration of mechanization and automation in factories is more and more recognized by everyone, and the demand for the introduction of mechanical auxiliary processing in betel nut factories is also increasing. The one that everyone expects the most is the integrated betel nut processing line. It is sent to various stations for processing. The processing lines in many large-scale betel nut processing plants have been initially formed, but the final step of taking out the betel nut from the fixture and sorting it still needs to be done manually. The biggest technical difficulty at this stage is how to use the mechanical device. The processed betel nut is taken out from the fixture, and the double cam type betel nut machine seed extraction and sorting device of the present invention can extract the betel nut on the assembly line fixture from the fixture and transfer it to the sorting station for sorting. The design can replace the manual take out of betel nut and send it to the sorting station, improve the efficiency and at the same time ensure the quality of betel nut, and minimize the pollution to food during processing.

SUMMARY OF THE INVENTION

The technical scheme adopted by the present invention to solve the above technical problems is: a double-cam type betel nut machine for seed extraction and sorting. The invention includes a frame 1 , a power device 2 , a movement control mechanism 3 , a horizontal movement mechanism 4 and a seed-lifting mechanism 5 . The power unit 2 is installed at the rear of the frame 1, and the movement control mechanism 3 and the horizontal movement mechanism 4 are respectively installed in the middle of the frame 1. The horizontal movement mechanism 4 is on the top, the movement control mechanism 3 is below, and the seed-lifting mechanism 5 is installed on the machine. Above shelf 1.

In the present invention, the rack 1 includes a left side plate 105, a right side plate 104, a mounting block 106, a connecting rod 107, a guide rail mounting plate 103, two T-shaped plates 102 and a guide plate 101; the mounting block 106 and the connecting rod 107 are fixedly connected to the left side plate 105 and the right side plate 104 with screws, the guide rail mounting plate 103 is fixedly mounted on the left side plate 105 and the right side plate 104, and the two T-shaped plates 102 are fixedly mounted on the guide rails respectively. At the front and rear ends of the plate 103, the guide plate 101 is fixedly mounted on the two T-shaped plates 102 with screws;

Preferably, there are guide grooves on the left side plate 105 and the right side plate 104, and its longitudinal height controls the height of the seed-lifting needle 507 to move down the height of the betel nut and the height of the betel nut to be lifted. Generally, the downward movement height is 30-70mm, It is preferably 50mm; the lifting height of betel nut is generally 35-75mm, preferably 55mm;

Preferably, there are guide grooves on the left side plate 105 and the right side plate 104, and the lateral distance controls the distance between the position where the seed-lifting needle 507 picks up the betel nut and the position where the betel nut is lifted out of the fixture and moved to the next process. The moving distance is 100-200mm, preferably 150mm;

Preferably, the lateral distance from the initial position of the guide groove on the guide plate 101 to the end position is 35-70mm, preferably 70mm, if it is 70mm, after the steering roller 501 moves in the guide groove for 70mm, the seed-lifting needle 507 will rotate 90 ° to reach the target position, and if it is 35mm, the seed-lifting needle 507 rotates 45°;

In the present invention, the power device 2 includes a servo motor 201, a harmonic reducer 204, a crank 202 and a connecting rod 203; the harmonic reducer 204 is fixedly mounted on the left side plate 105 of the frame 1, and the servo The motor 201 is fixed on the harmonic reducer 204, the output shaft of the servo motor 201 is connected with the input shaft of the harmonic reducer 204, the crank 202 is fixedly connected with the output shaft of the harmonic reducer 204, and one end of the connecting rod 203 is hinged with the crank 202 ;

In the present invention, the movement control mechanism 3 includes a short shaft 303, a connecting rod bearing 304, a guide rail bearing 305, a mounting plate 302, a clamping jaw 301 and a seed bearing 306; the short shaft 303 is connected by The rod bearing 304 is hinged with the other end of the connecting rod 203 of the power unit 2, the short shaft 303 is installed in the guide grooves of the left side plate 105 and the right side plate 104 of the frame 1 through the 2 guide rail bearing 305, and the 2 mounting plates 302 are respectively hinged At both ends of the short shaft 303, the 2 clamping jaws 301 are respectively fixed on the 2 mounting plate 302 with screws, and the 4 seed bearing bearings 306 are respectively installed on the upper and lower ends of the 2 mounting plate 302;

In the present invention, the horizontal moving mechanism 4 includes a guide rail 403, a slide block 402 and a U-shaped plate 401; the guide rail 403 is fixedly mounted on the guide rail mounting plate 103 of the rack 1 with screws, and the slide block 402 is mounted on the guide rail A moving pair is formed on the 403, the U-shaped plate 401 is fixed on the slider 402 with screws, and the 4-seed bearing 306 on the movement control mechanism 3 cooperates with the rail grooves on both sides of the U-shaped plate 401 to form a moving pair;

Preferably, the length of the rail grooves on both sides of the U-shaped plate 401 should match the longitudinal heights of the guide grooves on the left side plate 105 and the right side plate 104 , and its length is generally higher than the longitudinal heights of the guide grooves on the left side plate 105 and the right side plate 104 10-30mm, preferably 20mm;

As a preference, in order to ensure its stability, the width of the guide rail 403 should be 30-50mm, preferably 40mm;

In the present invention, the seed lifting mechanism 5 includes a bracket 503, 2 spline shafts 504, 2 spline sleeves 505, 2 needle frames 506, 2 seed lifting needles 507, 2 steering blocks 502 and 2 steering rollers 501; The bracket 503 is fixed on the U-shaped plate 401 of the horizontal moving mechanism 4 with screws, the two spline shafts 504 are hinged on both ends of the bracket 503, and the two spline sleeves 505 are respectively installed on the two spline shafts 504 to form a mobile Vice, the middle part of the 2 spline sleeve 505 is fork mounted on the 2 jaws 301 in the movement control mechanism 3 respectively, the 2 needle holder 506 is respectively fixed on the 2 spline sleeve 505, and the 2 seed lifting needles 507 are respectively fixed on the 2 needle holder 506 2 steering blocks 502 are respectively fixed on the upper ends of the 2 spline shafts 504 with pressing blocks, 2 steering rollers 501 are hinged on the 2 steering blocks 502 respectively, the 2 steering rollers 501 and the guide plate 101 in the frame 1 guide The grooves are matched, and the 2 steering rollers 501 move in the guide grooves, so that the 2 steering blocks 502 can drive the 2 seed lifting needles 507 to complete the rotation;

A kind of operation method of double cam type betel nut machine seed extraction and sorting device, the operation steps are as follows:

1) The device is in the initial state: the servo motor 201 is stopped, the steering roller 501 is at the end of the cam groove, the guide rail bearing 305 is at the upper end of the groove of the U-shaped plate 401, and the seed-lifting needle 507 is stationary at the end and the upper end, The betel nut is in a state to be extracted;

2) Seeds: the servo motor 201 rotates forward, the driving link 203 rotates to drive the movement control mechanism 3 to move downward, the steering roller 501 remains stationary in the cam groove, and the guide rail bearing 305 moves downward in the groove of the U-shaped plate 401 Move to the lowest position, so that the seed-lifting needle 507 is moved down to the betel nut position while keeping not turning to complete the action of plucking the betel nut;

3) Seed extraction: the servo motor 201 continues to rotate in the forward direction, the movement control mechanism 3 moves forward and upward, the steering roller 501 moves forward along the cam groove, and the guide rail bearing 305 moves upward in the groove of the U-shaped plate 401 to the highest point, The seed-lifting needle 507 is moved up and forward to lift the betel nut while maintaining no turning;

4) Indexing: the servo motor 201 continues to rotate forward, the movement control mechanism 3 moves forward, the steering roller 501 continues to move forward along the cam groove, and the guide rail bearing 305 maintains the highest position in the groove of the U-shaped plate 401, so that the lifting The seed needle 507 rotates 90° to complete the indexing action;

5) Seed feeding: the servo motor 201 continues to rotate forward, the movement control mechanism 3 moves forward, the steering roller 501 continues to move forward along the cam groove, and the guide rail bearing 305 maintains the highest position in the groove of the U-shaped plate 401, so that the lifting The seed needle 507 keeps rotating 90° and moves forward to reach the genuine process position, the servo motor 201 stops to complete the genuine seed dropping, and the servo motor 201 continues to rotate forward, so that the seed needle 507 keeps rotating 90° and continues to move forward When the defective product process position is reached, the servo motor 201 stops to complete the defective seed dropping;

6) Return: the servo motor 201 rotates in the reverse direction, and the driving link 203 rotates in the reverse direction to drive the movement control mechanism 3 to return to the original path through the guide groove, and the steering roller 501 moves backward along the cam groove to make the seed-lifting needle 507 return to the original position. return to the original position.

Compared with the prior art, the technical effect of the present invention is as follows: the present invention adopts the crank-slider mechanism to cooperate with the double cam device to control the seed-lifting mechanism 5 to extract the betel nut from the fixture and turn it over 90° and place it at the next station, thereby realizing the The mechanical integration of betel nut's fixture-extraction-transfer, fully automated replacement of manual processing, saves more than 60% of labor costs. The realization of this function has broken through the technical difficulties of the betel nut processing industry in recent years, and achieved the processing efficiency, quality, and efficiency of betel nut. Optimization of cost and other issues. The invention has the characteristics of exquisite design, simple and compact structure, convenient disassembly and assembly, simple processing and the like, and is suitable for use in existing betel nut processing plants.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the sectional view of the present invention;

Fig. 3 is the frame 1 structural diagram of the present invention;

Fig. 4 is the structure diagram of the power plant 2 of the present invention;

Fig. 5 is the movement control mechanism 3 structural diagram of the present invention;

Fig. 6 is the structure diagram of the horizontal movement mechanism 4 of the present invention;

FIG. 7 is a structural diagram of the seed extraction mechanism 5 of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

According to an embodiment provided by the present invention:

A double cam type betel nut machine seed extraction and sorting device, the invention includes a frame 1 , a power device 2 , a movement control mechanism 3 , a horizontal movement mechanism 4 and a seed extraction mechanism 5 . The power unit 2 is installed at the rear of the frame 1, and the movement control mechanism 3 and the horizontal movement mechanism 4 are respectively installed in the middle of the frame 1. The horizontal movement mechanism 4 is on the top, the movement control mechanism 3 is below, and the seed-lifting mechanism 5 is installed on the machine. Above shelf 1.

In the present invention, the rack 1 includes a left side plate 105, a right side plate 104, a mounting block 106, a connecting rod 107, a guide rail mounting plate 103, two T-shaped plates 102 and a guide plate 101; the mounting block 106 and the connecting rod 107 are fixedly connected to the left side plate 105 and the right side plate 104 with screws, the guide rail mounting plate 103 is fixedly mounted on the left side plate 105 and the right side plate 104, and the two T-shaped plates 102 are fixedly mounted on the guide rails respectively. At the front and rear ends of the plate 103, the guide plate 101 is fixedly mounted on the two T-shaped plates 102 with screws;

Preferably, there are guide grooves on the left side plate 105 and the right side plate 104, and its longitudinal height controls the height of the seed-lifting needle 507 to move down the height of the betel nut and the height of the betel nut to be lifted. Generally, the downward movement height is 30-70mm, It is preferably 50mm; the lifting height of betel nut is generally 35-75mm, preferably 55mm;

Preferably, there are guide grooves on the left side plate 105 and the right side plate 104, and the lateral distance controls the distance between the position where the seed-lifting needle 507 picks up the betel nut and the position where the betel nut is lifted out of the fixture and moved to the next process. The moving distance is 100-200mm, preferably 150mm;

Preferably, the lateral distance from the initial position of the guide groove on the guide plate 101 to the end position is 35-70mm, preferably 70mm, if it is 70mm, after the steering roller 501 moves in the guide groove for 70mm, the seed-lifting needle 507 will rotate 90 ° to reach the target position, and if it is 35mm, the seed-lifting needle 507 rotates 45°;

In the present invention, the power device 2 includes a servo motor 201, a harmonic reducer 204, a crank 202 and a connecting rod 203; the harmonic reducer 204 is fixedly mounted on the left side plate 105 of the frame 1, and the servo The motor 201 is fixed on the harmonic reducer 204, the output shaft of the servo motor 201 is connected with the input shaft of the harmonic reducer 204, the crank 202 is fixedly connected with the output shaft of the harmonic reducer 204, and one end of the connecting rod 203 is hinged with the crank 202 ;

In the present invention, the movement control mechanism 3 includes a short shaft 303, a connecting rod bearing 304, a guide rail bearing 305, a mounting plate 302, a clamping jaw 301 and a seed bearing 306; the short shaft 303 is connected by The rod bearing 304 is hinged with the other end of the connecting rod 203 of the power unit 2, the short shaft 303 is installed in the guide grooves of the left side plate 105 and the right side plate 104 of the frame 1 through the 2 guide rail bearing 305, and the 2 mounting plates 302 are respectively hinged At both ends of the short shaft 303, the 2 clamping jaws 301 are respectively fixed on the 2 mounting plate 302 with screws, and the 4 seed bearing bearings 306 are respectively installed on the upper and lower ends of the 2 mounting plate 302;

Preferably, the connecting rod bearing 304 installed on the short shaft 303, the guide rail bearing 305 and the mounting plate 302 are axially positioned by using a stepped shaft or a sleeve, etc., preferably using a sleeve for positioning;

In the present invention, the horizontal moving mechanism 4 includes a guide rail 403, a slide block 402 and a U-shaped plate 401; the guide rail 403 is fixedly mounted on the guide rail mounting plate 103 of the rack 1 with screws, and the slide block 402 is mounted on the guide rail A moving pair is formed on the 403, the U-shaped plate 401 is fixed on the slider 402 with screws, and the 4-seed bearing 306 on the movement control mechanism 3 cooperates with the rail grooves on both sides of the U-shaped plate 401 to form a moving pair;

Preferably, the length of the rail grooves on both sides of the U-shaped plate 401 should match the longitudinal heights of the guide grooves on the left side plate 105 and the right side plate 104 , and its length is generally higher than the longitudinal heights of the guide grooves on the left side plate 105 and the right side plate 104 10-30mm, preferably 20mm;

As a preference, in order to ensure its stability, the width of the guide rail 403 should be 30-50mm, preferably 40mm;

In the present invention, the seed lifting mechanism 5 includes a bracket 503, 2 spline shafts 504, 2 spline sleeves 505, 2 needle frames 506, 2 seed lifting needles 507, 2 steering blocks 502 and 2 steering rollers 501; The bracket 503 is fixed on the U-shaped plate 401 of the horizontal moving mechanism 4 with screws, the two spline shafts 504 are hinged on both ends of the bracket 503, and the two spline sleeves 505 are respectively installed on the two spline shafts 504 to form a mobile Vice, the middle part of the 2 spline sleeve 505 is fork mounted on the 2 jaws 301 in the movement control mechanism 3 respectively, the 2 needle holder 506 is respectively fixed on the 2 spline sleeve 505, and the 2 seed lifting needles 507 are respectively fixed on the 2 needle holder 506 2 steering blocks 502 are respectively fixed on the upper ends of the 2 spline shafts 504 with pressing blocks, 2 steering rollers 501 are hinged on the 2 steering blocks 502 respectively, the 2 steering rollers 501 and the guide plate 101 in the frame 1 guide The grooves are matched, and the 2 steering rollers 501 move in the guide grooves, so that the 2 steering blocks 502 can drive the 2 seed lifting needles 507 to complete the rotation.

A kind of operation method of double cam type betel nut machine seed extraction and sorting device, the operation steps are as follows:

1) The device is in the initial state: the servo motor 201 is stopped, the steering roller 501 is at the end of the cam groove, the guide rail bearing 305 is at the upper end of the groove of the U-shaped plate 401, and the seed-lifting needle 507 is stationary at the end and the upper end, The betel nut is in a state to be extracted;

2) Seeds: the servo motor 201 rotates forward, the driving link 203 rotates to drive the movement control mechanism 3 to move downward, the steering roller 501 remains stationary in the cam groove, and the guide rail bearing 305 moves downward in the groove of the U-shaped plate 401 Move to the lowest position, so that the seed-lifting needle 507 is moved down to the betel nut position while keeping not turning to complete the action of plucking the betel nut;

3) Seed extraction: the servo motor 201 continues to rotate in the forward direction, the movement control mechanism 3 moves forward and upward, the steering roller 501 moves forward along the cam groove, and the guide rail bearing 305 moves upward in the groove of the U-shaped plate 401 to the highest point, The seed-lifting needle 507 is moved up and forward to lift the betel nut while maintaining no turning;

4) Indexing: the servo motor 201 continues to rotate forward, the movement control mechanism 3 moves forward, the steering roller 501 continues to move forward along the cam groove, and the guide rail bearing 305 maintains the highest position in the groove of the U-shaped plate 401, so that the lifting The seed needle 507 rotates 90° to complete the indexing action;

5) Seed feeding: the servo motor 201 continues to rotate forward, the movement control mechanism 3 moves forward, the steering roller 501 continues to move forward along the cam groove, and the guide rail bearing 305 maintains the highest position in the groove of the U-shaped plate 401, so that the lifting The seed needle 507 keeps rotating 90° and moves forward to reach the genuine process position, the servo motor 201 stops to complete the genuine seed dropping, and the servo motor 201 continues to rotate forward, so that the seed needle 507 keeps rotating 90° and continues to move forward When the defective product process position is reached, the servo motor 201 stops to complete the defective seed dropping;

6) Return: the servo motor 201 rotates in the reverse direction, and the driving link 203 rotates in the reverse direction to drive the movement control mechanism 3 to return to the original path through the guide groove, and the steering roller 501 moves backward along the cam groove to make the seed-lifting needle 507 return to the original position. return to the original position.

Claims (5)

1. A double-cam type betel nut machine seed-lifting and sorting device is characterized in that: comprising a frame (1), a power unit (2), a movement control mechanism (3), a horizontal movement mechanism (4) and a seed-lifting mechanism ( 5); The power unit (2) is installed at the rear of the frame (1), and the movement control mechanism (3) and the horizontal movement mechanism (4) are respectively installed in the middle of the frame (1), wherein the horizontal movement mechanism (4) is located in the middle of the frame (1). On the top, the movement control mechanism (3) is on the bottom, and the seed-lifting mechanism (5) is installed on the top of the frame (1); The rack (1) includes a left side plate (105), a right side plate (104), a mounting block (106), a connecting rod (107), a guide rail mounting plate (103), and two T-shaped plates (102) and the guide plate (101); the mounting block (106) and the connecting rod (107) are fixedly connected with the left side plate (105) and the right side plate (104) with screws, and the guide rail mounting plate (103) is fixedly mounted on the left side plate (103). On the side plate (105) and the right side plate (104), two T-shaped plates (102) are respectively fixed on the front and rear ends of the guide rail mounting plate (103), and the guide plate (101) is fixed on the two T-shaped plates with screws. on the board (102); and / or There are guide grooves on the left side plate (105) and the right side plate (104), the longitudinal height of which controls the height at which the seed-lifting needle (507) moves down to pick up the betel nut and the height at which the betel nut is lifted. -70mm, preferably 50mm; the lifting height of betel nut is generally 35-75mm, preferably 55mm; There are guide grooves on the left side plate (105) and the right side plate (104), and its lateral distance controls the distance between the position where the seed extraction needle (507) pokes the betel nut and the position where the betel nut is lifted out of the fixture and moved to the next process. Distance, the general moving distance is 100-200mm, preferably 150mm; The lateral distance from the initial position of the guide groove on the guide plate (101) to the end position is 35-70mm, preferably 70mm. It will rotate 90° to reach the target position, and if it is 35mm, the seed needle (507) will rotate 45°. 2. A double-cam type betel nut machine for seed extraction and sorting device according to claim 1, characterized in that: the power device (2) comprises a servo motor (201), a harmonic reducer (204), a crank (202) and connecting rod (203); the harmonic reducer (204) is fixedly mounted on the left side plate (105) of the frame (1), and the servo motor (201) is fixedly mounted on the harmonic reducer ( 204), the output shaft of the servo motor (201) is connected with the input shaft of the harmonic reducer (204), the crank (202) is fixedly connected with the output shaft of the harmonic reducer (204), and one end of the connecting rod (203) is connected to the crank (202) Hinged. 3. A double-cam type betel nut machine seed-lifting and sorting device according to claim 1, characterized in that: the movement control mechanism (3) comprises a short shaft (303), a connecting rod bearing (304), 2 Guide rail bearing (305), 2 mounting plates (302), 2 clamping jaws (301) and 4 seed bearing (306); the short shaft (303) is connected to the power unit (2) through the connecting rod bearing (304) The other end of the connecting rod (203) is hinged, and the short shaft (303) is installed in the guide grooves of the left side plate (105) and the right side plate (104) of the frame (1) through 2 guide rail bearings (305). The plate (302) is hinged on both ends of the short shaft (303) respectively, the two clamping jaws (301) are respectively fixed on the two mounting plates (302) with screws, and the four seed bearing (306) are respectively mounted on the two mounting plates (302) the upper and lower ends of the . 4. A double-cam type betel nut machine seed-lifting and sorting device according to claim 1, characterized in that: the horizontal moving mechanism (4) comprises a guide rail (403), a slider (402) and a U-shaped plate (401); the guide rail (403) is fixedly mounted on the guide rail mounting plate (103) of the rack (1) with screws, and the slider (402) is mounted on the guide rail (403) to form a moving pair, the U-shaped plate ( 401) Fix on the slider (402) with screws, and the 4-seed bearings (306) on the movement control mechanism (3) cooperate with the rail grooves on both sides of the U-shaped plate (401) to form a moving pair; and / or The length of the rail grooves on both sides of the U-shaped plate (401) should match the longitudinal heights of the guide grooves on the left side plate (105) and the right side plate (104), and its length is generally longer than that of the left side plate (105) and the right side plate (104). The longitudinal height of the upper guide groove is 10-30mm higher, preferably 20mm; To ensure its stability, the width of the guide rail (403) should be 30-50mm, preferably 40mm. 5. A double-cam type betel nut machine seed-lifting and sorting device according to claim 1, characterized in that: the seed-lifting mechanism (5) comprises a bracket (503), 2 spline shafts (504), 2 Spline sleeve (505), 2 needle holders (506), 2 seed-lifting needles (507), 2 steering blocks (502) and 2 steering rollers (501); the bracket (503) is fixed on the level with screws On the U-shaped plate (401) of the moving mechanism (4), two spline shafts (504) are hinged on both ends of the bracket (503) respectively, and two spline sleeves (505) are respectively installed on the two spline shafts (504) To form a moving pair, the middle parts of the two spline sleeves (505) are respectively fork-mounted with the two clamping jaws (301) in the movement control mechanism (3), and the two needle holders (506) are respectively fixed on the two spline sleeves (505), and the two The seed-lifting needles (507) are respectively fixed on the 2 needle frames (506), the 2 steering blocks (502) are respectively fixed on the upper ends of the 2 spline shafts (504) with pressing blocks, and the 2 steering rollers (501) are hinged on the upper ends of the 2 spline shafts (504) respectively. On the 2 steering block (502), the 2 steering roller (501) is matched with the guide groove on the guide plate (101) in the frame (1), and the 2 steering roller (501) moves in the guide groove, which can make the 2 steering The block (502) drives the two seed-lifting needles (507) to complete the rotation.

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