JPH07114578B2 - Seedling box positioning device for transplanter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seedling box positioning device for a transplanter.

(Prior Art) A transplanter used for transplanting seedlings such as cabbage and lettuce intermittently sends seedling boxes by means of seedling box feeding means, and seedlings in pots in a horizontal row of seedling boxes by means of seedling pushing means. There is one that is extruded and supplied to the planting means side.

In this type of transplanter, conventionally, the seedling box feeding means merely feeds the seedling box, and no special measure for positioning is taken.

(Problems to be Solved by the Invention) In a conventional transplanter, when a seedling box formed of a thin material such as a synthetic resin is used, the seedling box is deformed due to the weight of the floor soil in the pot portion. When the seedling pushing means pushed the seedlings in the pot part by the feeding amount was not constant, the seedling pushing means contacted the pot part, possibly damaging the seedlings and the seedling box. In addition, when the seedling box is thin and soft, the ground soil adheres to the inside of the pot part due to roots, etc., so even if it is pushed by the pushing means, the seedling box is only deformed, and the seedling floor soil does not come off from the pot part. There was also that.

The present invention is provided for the purpose of solving such a conventional problem.

(Means for Solving the Problem) According to the present invention, the seedling boxes 40 are intermittently fed by the seedling box feeding means 9, and the seedlings 25 in the pot portions 39 in a horizontal row of the seedling boxes 40 are pushed by the seedling pushing means 10. In the transplanter adapted to supply to the planting means 12 side, the seedling is fitted into the extruded pot portion 39 so that the pot portion 39 coincides with the seedling pushing means 10, and the seedling box position is corrected in the feeding direction. The box positioning means 61 is provided, and the seedling box positioning means 61 and the seedling pushing means 10 are interlocked with each other so that the seedling box positioning means 61 can be inserted into and removed from the pot portion 39.

(Operation) The seedling box positioning means 61 operates in conjunction with the seedling pushing means 10, fits into the pot portion 39 of the seedling box 40, and corrects the seedling box position in the feeding direction. Therefore, the seedlings 25 in the pot portion 39 of the seedling box 40 can be extruded.

Further, since the seedling box positioning means 61 is fitted to the pot portion 39,
When the seedling pushing means 10 pushes out the seedlings 25, the seedling box 40 is unlikely to be deformed, and the seedlings 25 can be pushed out easily.

(Example) Hereinafter, the Example of this invention is described in full detail based on drawing.

FIG. 9 shows the whole transplanter. In FIG. 9, 1
Is a machine frame having front wheels 2 and rear wheels 3, and also has a steering wheel 4, an engine 5, a driver's seat 6 and the like. A planting frame 7 is arranged below the front part of the machine frame 1. The planting frame 7 has a seedling box mounting table 8, seedling box feeding means 9, seedling pushing means 10, seedling feeding means 11, and planting frames 7. Attaching means 12, earth cover 13, grooving device
14 mag are provided respectively. The planting means 12 is provided with a pair of left and right planting disks 15 made of an elastic material such as rubber so as to be rotatable, and the seedlings supplied between the planting disks 15 are planted in the planting grooves. .

As shown in FIG. 5, the seedling feeding means 11 includes a chain 18 wound between a pair of left and right sprockets 16 and 17, and an elliptical guide plate 19 provided in parallel near the rear of the chain 18. It is composed of a large number of seedling receivers 20 which are connected to the chain 18 at equal intervals and are slidable along the peripheral edge of the guide plate 19. A notch 21 is formed in the guide plate 19 so that portions of the planting means 12 corresponding to the pair of planting disks 15 are lowered. As shown in FIG. 1 and FIG. 2, each seedling receiver 20 is shallow U-shaped, and is rotatably supported on a bracket 23 of a chain 18 by a pin 22 at a lower front end thereof.
A spring 24 urges the rear end side of the guide plate 19 so as to come into sliding contact with the guide plate 19. The seedling receiving device 20 is a seedling pushing means.
When it passes the front side of 10, it is supported horizontally by the guide plate 19, and when it reaches the notch 21, it tilts backward around the pin 22 as shown in FIG.
It is designed to be supplied by dropping it between the pair of planting disks 15 from the side of the floor soil 26. The sprocket 16 on the drive side is attached to a transmission shaft 28 via an electromagnetic clutch 27, and when the electromagnetic clutch 27 is engaged, the chain 18 rotates in the direction of arrow a.

The seedling box feeding means 9 and the seedling pushing means 10 are arranged near the rear of the seedling feeding means 11. As shown in FIG. 1 and FIG. 2, the seedling box feeding means 9 has a pair of left and right guide rails 29 for inserting and guiding both left and right edges of the seedling box 40 so as to support and guide it slidably up and down.
And a feed sprocket 31 that rotates by engaging with feed holes 30 formed at both left and right ends of the seedling box 40.
Insert the seedling box 40 inserted into the
The rotation of the feed sprocket 31 that engages with the feed feeds downward. The guide rail 29 is attached to a pillar 32 which is vertically installed on the planting frame 7 in an inclined manner. A pair of left and right feed sprockets 31 are rotatably supported on a drive shaft 34 via a cylinder shaft 33 and interlockingly connected to the drive shaft 34 via an electromagnetic clutch 35. Drive shaft 34 is column 32
It is laid horizontally between and is linked to the transmission shaft 28 via the bevel gear mechanism 37 in the gear case 36 (see FIG. 7).

As shown in FIG. 1, FIG. 2, and FIG. 5, the seedling box 40 has a rectangular shape as a whole, and a large number of tapered pot portions 39 having an opening 38 at the bottom are formed vertically and horizontally. The seedling 25 is raised in a state in which the pot soil 39 is filled with the soil 26. The seedling box 40 is loaded between the guide rails 29 of the seedling box feeding means 9 so that the seedlings 25 face forward.

The seedling pushing means 10 is for pushing the horizontal rows of the seedlings 25 in the seedling box 40 onto the respective seedling receivers 20 in the vicinity of and above the seedling receivers 20 of the seedling feeding means 11. As shown in FIGS. 1 and 2, this seedling pushing-out means 10 has push rods 41 arranged corresponding to the pot portions 39 in a horizontal row of the seedling box 40, and an arm supporting the push rods 41.
42, a movable plate 43 fixed to one end of the arm 42, and a guide rail 45 that supports the movable plate 43 via guide rollers 44 so as to be movable back and forth. The movable plate 43 is connected to the crank arm 48 of the crank shaft 47 via the rod 46, and the rotation of the crank shaft 47 causes the push rod 41 to move back and forth to move the seedling.
It is designed to extrude 25 floor soils 26. The crankshaft 47 is rotatably supported by a support plate 49 fixed to the support column 32, and is interlocked with the drive shaft 34 via a gear train 50 and an electromagnetic clutch 51 (see FIG. 7).

As shown in FIG. 7, the drive shaft 34 is interlocked with a motor 53 via a winding transmission mechanism 52 such as a chain. The drive shaft 34 has a pulse generator 56 along with proximity switches 54, 55.
The indexing plate 57 constituting the above is fixed. Index plate 57
As shown in FIG. 8, a half of the outer circumference is cut out, and an inward cutout portion 58 is formed at one end of the cutout portion. The proximity switches 54, 55 are mounted on the fixed side so as to face the indexing plate 57, and the proximity switch 54 synchronizes with the rotation speed of the drive shaft 34 to generate a pulse having a width of about 180 ° for each rotation. Further, the proximity switch 55 is adapted to generate a pulse having a narrow width for each rotation. Incidentally, 59 is a limit switch for seedling box detection, which is attached to the guide rail 29 or the like.

A seedling box stopper 60 shown in FIG. 3 and seedling box positioning means shown in FIGS. 1 and 2 are provided near the lower part of the seedling pushing means 10.
61 and are provided.

Seedling box stopper 60 is a guide rail as shown in FIG.
This is for contacting the lower end edge of the seedling box 40 loaded in 29 to align the bottom pot portion 39 of the seedling box 40 with the position of the push rod 41. The seedling box stopper 60 is supported by a bracket 62 fixed to the column 32 so as to be slidable back and forth, and is biased rearward by a spring 63. The seedling box stopper 60 is connected to a lever 65 via a rod 64. Lever 65 is support plate 49
Is pivoted at pin 66 to spring 6 to engage pins 67 and 68.
It is urged by 9 so that unstable switching is possible. Therefore, if this lever 65 is operated back and forth, the seedling box stopper 60 can be retracted and retracted to engage and disengage from the seedling box 41. In addition, 70 is a limit switch for detecting a lever, which works when the seedling box stopper 60 is released.

The seedling box positioning means 61 is interlocked with the seedling pushing means 10 and, before the push rod 41 pushes the floor soil 26 of the seedling 25, the opening 38 of the pot portion 39.
Is for vertically adjusting the position of the seedling box so that is aligned with the push rod 41. The seedling box positioning means 61 is a positioning roller 71 that can be inserted into and removed from the pot portion 39 that has been pushed out from the front side.
An arm 73 that supports the roller 71 and is pivotally attached to the guide rail 29 or the like by a pin 72 so as to swing back and forth, and a connecting rod 75 that connects the arm 73 to the crank arm 74 of the crank shaft 47. As shown in FIG. 6, the connecting rod 75 is composed of a tubular body 76 and a rod 77 inserted therein, and is configured to be expandable / contractible by a pin 79 and a spring 80 within the elongated hole 78. The seedling box positioning means 61 is provided at the left and right ends of the seedling box 40, the central portion, or both.

FIG. 10 shows a block diagram of the control system. In FIG.
81 is a main switch and 82 is a planting start switch. 83
Is a control means for controlling the motor 53 in accordance with a predetermined set control sequence by signals from the switches 54, 55, 59, 70, 81, 82, and intermittently connecting the electromagnetic clutches 27, 35, 51. Has become. The control means 83 is constituted by a microcomputer having a function of counting the pulses from the proximity switch 54 and other arithmetic processing functions.

Next, the operation will be described with reference to the time chart of FIG. At the time of transplanting work, first, the seedling box 40 is inserted between the guide rails 29 of the seedling box feeding means 9 from above and loaded, and locked by the seedling box stopper 60. At this time, the main switch
If you insert 81, the limit switch 59 detects the seedling box 40. When the next start switch 82 is turned on, the motor 53 is rotated via the control means 83, so that the seedling box stopper 60 is released by the lever 65. At this time, the limit switch 70 operates. Then, when the motor 53 rotates, the drive shaft 34 rotates, and the indexing plate 57 of the pulse generating means 56 rotates, so that the proximity switches 54 and 55 intermittently generate pulses and the control means 8
3 enters the control operation of each electromagnetic clutch 27, 35, 51.

That is, when the drive shaft 34 and the index plate 57 rotate, the control means 83
Gives an operation signal to the electromagnetic clutch 51 of the seedling pushing-out means 10, so that the electromagnetic clutch 51 is connected and the crankshaft 47 rotates in conjunction with the drive shaft 34. As a result, the movable plate 43 moves back and forth once along the guide rails 45, and the push rod 41 pushes the floor soil 26 of the pot row 39 in the lowermost horizontal row from the rear to feed the seedlings 25 in the stopped state. Transfer to the seedling receiver 20 of the means 11. At this time, the arm 73 of the seedling box positioning means 61 interlocks and swings, but the roller 71 is below the seedling box 40 and does not act at all.

Next, when a pulse is input from the proximity switches 54 and 55, the control means 83 gives an operation signal to the electromagnetic clutch 27 of the seedling feeding means 12, and the electromagnetic clutch 27 is engaged. Therefore, seedling feeding means 11
The chain 18 of the plant rotates and the seedlings 25 on the seedling holder 20 are planted 12
Send only one pitch to the side. Hereinafter, each time a pulse is input from the proximity switches 54, 55, the control means 83 intermittently gives an operation signal to the electromagnetic clutch 27 by the number of seedlings in one row of the seedling box 40, and sets the seedlings 25 on each seedling receiver 20. Send them to the planting means 12 side sequentially.
When the seedling receiver 20 reaches the notch 21 of the guide plate 19, the spring 24 rotates the seedling receiver 20 around the pin 23, and the seedling 25 on the seedling receiver 20 is paired with the pair of planting disks of the planting means 12. Since the seedlings 25 are dropped and supplied between them, the seedlings 25 are planted in the planting grooves as the planting disks 15 rotate.

When the seedling feeding means 11 enters the last feeding operation of the seedlings 25, the control means 83 gives an operation signal to the electromagnetic clutch 35 of the seedling box feeding means 9, and the electromagnetic clutch 35 is engaged. For this reason, the feed stopper 31 is rotated by the power of the drive shaft 34, and the seedling box 40 is fed downward so that the lower second pot portion 39 of the seedling box 40 corresponds to the push rod 41 of the seedling pushing means 10.

When the feeding operation of the last seedlings 25 by the seedling feeding means 11 is completed, the seedlings 25 on the seedling receiver 20 are separated from the front of the seedling pushing means 10 to the side, so that the control means 83 gives an operation signal to the electromagnetic clutch 51. , The electromagnetic clutch 51 is connected, and the seedling pushing means 10 pushes the seedlings 25 in the horizontal second row in the lower second stage onto the seedling receiver 20.

On the other hand, when pushing out the seedlings from the second lower stage onward, the seedling box positioning means 61 operates to correct the position of the seedling box 40 up and down. That is, when the crankshaft 47 rotates, the arm 73 is pulled via the rod 75, so that the arm 73 swings around the pin 72, and the roller 71 fits into the pushed pot portion 39.
Therefore, even if the seedling box 40 is slightly displaced in the vertical direction when the seedling box is fed, the roller 71 moves the seedling box 40 up and down by fitting into the pot portion 39, so that the tip of the push rod 41 is located at the pot portion.
There is no fear that the push rod 41 will be brought into contact with the pot portion 39, etc., without fail if it coincides with the opening 39 of 39. Further, since the seedling box 40 is pressed by the roller 71, the floor soil 26 easily comes off from the pot portion 39 of the seedling box 40.

Even if the start switch 82 is turned off during the transplanting work, the motor 53 rotates until the seedling feeding operation at that time ends, and then stops. Further, since the control means 83 stores the number of planted counters, when the start switch 82 is turned on again, counting is started from the next number.

When the limit switch 59 detects that the seedling box has run out, the last horizontal row of the seedlings 25 in the seedling box 40 is pushed out and planted, and then the motor 53 is stopped. Therefore, after that, another seedling box 40 may be loaded.

In the embodiment, the seedling box 40 is sent while being straight, but the guide rail 29 is formed in an arc shape, and the seedling box 40 is
May be curved and guided in an arc shape. In this case, if the front surface side of the pot portion 39 is widened by making it project toward the front surface, the floor soil 26 can be easily extruded.

The guide rail 29 may be provided horizontally.

Furthermore, the seedling box 40 is arranged so that the seedlings 25 face forward, which is determined in relation to the planting means 12,
The seedlings 25 can be arranged so as to face rearward.

Furthermore, although the planting means 12 adopts a disc type, a reverse cone-shaped tube in which seedlings are dropped and supplied is pierced in the soil and then the bottom is opened to plant seedlings. You may adopt it.

(Effects of the Invention) According to the present invention, the seedling box positioning means 61 that fits into the pot portion 39 that has been pushed out and corrects the seedling box position in the feeding direction so that the pot portion 39 matches the seedling pushing means 10. Since the seedling box positioning means 61 and the seedling pushing-out means 10 are interlocked so that the seedling box positioning means 61 fits into and out of the pot portion 39, the seedling pushing means 10 is used to set the seedlings 25 in the pot portion 39. When extruding, the seedling extruding means 10 can surely extrude without coming into contact with the pot portion 39, and the seedling box is not easily deformed at the time of extruding, so that the seedling 25 can be extruded easily.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a side sectional view of a main part, Fig. 2 is a sectional plan view of the same, Fig. 3 is a side sectional view of a stopper portion, and Fig. 4 is a side surface of seedling feeding means. Sectional view, FIG. 5 is a schematic front view, FIG. 6 is a sectional view of a rod, FIG. 7 is a configuration diagram of a power system, FIG. 8 is a sectional view of a pulse generator, FIG. 9 is a side view of the whole, FIG. 10 is a block diagram and FIG. 11 is a time chart. 9 ... Seedling box feeding means, 10 ... Seedling pushing means, 11 ... Seedling feeding means, 12 ... Planting means, 25 ... Seedling, 27,35,51 ... Electromagnetic clutch, 26 ... Floor soil, 34 …… Drive shaft, 39 …… Pot part, 40 …… Seedling box, 41 …… Push bar, 56 …… Pulse generator,
61 …… seedling box positioning means, 83 …… control means.

Claims (1)

[Claims] 1. A seedling box (40) is intermittently sent by a seedling box feeding means (9), and the seedlings (25) in a horizontal row of pot portions (39) of the seedling box (40) are pushed out by means of a seedling pushing means (10). ) In a transplanter which is extruded by means of (1) and supplied to the planting means (12) side, the pot part (39) is fitted into the extruded pot part (39) so that it matches the seedling extruding means (10). Then, a seedling box positioning means (61) for correcting the seedling box position in the feeding direction is provided, and the seedling box positioning means (61) and the seedling box positioning means (61) are fitted to and removed from the pot part (39). A seedling box positioning device for a transplanter, characterized in that it is interlocked with a pushing means (10).