JPH0416105A - Transplanter seedling box feeding device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a seedling box feeding device for a transplanter for transplanting potted seedlings of cabbage, lettuce, etc.

(Conventional technology) Seedlings of vegetables, rice, etc., grown in soil are grown in synthetic resin seedling boxes with a large number of pots arranged vertically and horizontally. The seedlings are fed to a U-shaped curved seedling box guide stand, and while the seedling box is intermittently fed vertically, the seedlings are pushed out of the seedling box one row at a time using a reciprocating push rod, and the seedlings are transferred to the planting means. (See Japanese Patent Publication No. 57-22282).

(Problem H to be solved by the invention) In the above-mentioned prior art, the seedling box guide stand is curved in a substantially U-shape when viewed from the side, and the seedling box is curved at the seedling pushing position, making it easier to push out the seedlings with the pushing rod. However, because the seedling box is severely curved, the feeding resistance of the seedling box is increasing.

In addition, the seedling box guide table has a hole opened only at the position where the push rod is inserted, and the other parts are formed with guide surfaces that make sliding contact with the bottom of the seedling box, so this also increases the resistance to feeding the seedling box. This makes it difficult to transport seedling boxes smoothly.

(Means for Solving the Problems) The present invention forms a seedling box guide stand in an abbreviated shape when viewed from the side, and forms an opening from at least the vicinity of the start end to the vicinity of the end of the curved portion between the entrances and exits. To provide a seedling box feeding device for a transplanter that can smoothly send boxes.

That is, the specific configuration for solving the problem in the present invention is as follows:
There is an entrance 29b at the top of the seedling box guide stand 29, and an exit 29 at the bottom.
Guide rail portions 29a are formed on both lateral sides between the entrances and exits 29b and 2Oc, and a seedling box 40 in which a large number of pot portions 39 are arranged vertically and horizontally is inserted from the entrance 29b to open both guide rail portions 29a. In the seedling box feeding device of the transplanter, the seedling box guide stand 29 is capable of feeding the pot portions 39 one row at a time forward in the direction in which the push rod 41 of the seedling pushing means 10 projects while guiding the seedling box guide stand 29 in a side view. An opening 29f is formed which is curved in a V-shape and avoids contact with the bottom of the pot part 39 from the vicinity of the start end to the vicinity of the end of the curved part between both guide rail parts 29a and at least between the entrances and exits 29b and 29c. It is.

(Function) The seedling box 40 in which the seedlings 25 have been grown is inserted through the upper entrance 29b of the seedling box guide stand 29, guided by the left and right guide rail portions 29a, and sent in the vertical direction. Since the seedling box guide stand 29 has an abbreviated shape when viewed from the side, the seedling box 40 is sent to the curved part with almost no resistance, and in the curved part, an opening 29f is formed from the vicinity of the starting end to the vicinity of the terminal end, so that the seedling box 40 can be easily moved. Since the left and right sides of the seedling box 40 only come into sliding contact with the guide rail part 29a, and the bottom of the seedling box 40 does not come into sliding contact between the left and right guide rail parts 29a, the seedling box 40 is smoothly fed while being curved.

(Example) Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 6 shows the entire transplanter. In this Figure 6, 1
is a machine frame, which has front wheels 2 and rear wheels 3, as well as a steering wheel 4, an engine 5, a driver's seat 6, etc. Reference numeral 7 denotes a planting frame, which is arranged at the front lower side of the machine frame l, and this planting frame 7 includes a seedling box mounting table 8, a seedling box feeding means 9, a seedling pushing means 10, a seedling feeding means 11, and a seedling box. A supply means 90, a planting means 12, a soil covering wheel 13, a furrower 14, etc. are provided, respectively.

The front wheels 2 are steering wheels, and can be steered by pushing left and right steering pedals 91 back and forth while sitting in the driver's seat 6.

The planting means 12 is rotatably equipped with a pair of left and right planting disks 15 made of an elastic material such as rubber.
The seedlings supplied during the 5th period are planted into the planting groove.

As shown in Figs. 1 to 4.7, the seedling feeding means 11 includes a chain 18 wound between a pair of left and right sprockets 17, and an oval shaped chain 18 arranged in parallel near the rear of the chain 18. It is composed of a guide plate 19 and a large number of seedling holders 20 connected to the chain 18 at equal intervals and arranged in an endless manner and slidable along the periphery of the guide plate 19.

A notch 21 is formed in the guide plate 19 so that a portion corresponding to the pair of planting disks 15 of the planting means I2 is lowered. Each seedling holder 20 has a shallow U-shape, and a plug/nod 23 of the chain 18 is connected to a pin 22 at the lower front end.
The guide plate 19 is rotatably supported by the guide plate 19, and the rear end side is biased by the guide plate 19 so as to be in sliding contact with the guide plate 19.

The seedling holder 20 is horizontally supported by the guide plate 19 when passing in front of the seedling pushing means 10, and is supported by the notch 2.
1, as shown in FIG. 7, the container is tilted up around the bin 22, and the seedlings 25 are dropped between the pair of planting discs 15 of the planting means 12 from the floor ±26 side and supplied. It has become.

That is, the structure in which the seedling holder 20 is pivotally supported, the notch 21, etc. constitute a seedling supplying means 90 that drops and supplies the seedlings 25 from above the seedling holder 20 to the planting means 12.

Further, a position regulating means 92 is provided between the guide plate 19 and the seedling box feeding means 9. This position regulating means 92 is a regulating plate 9 provided in an upright manner from the rear surface of the guide plate 19.
3, which prevents the seedlings 25 pushed out by the seedling pushing means 10 and placed on the seedling receiver 20 from returning to the side of the seedling box feeding means 9 due to vibration or the like. This regulating plate 93 is not provided in a portion corresponding to the notch 21.

The regulation plate 93 is located below the lower edge of the pot part 39 in the seedling pushing position, and the seedling holder 20 is tilted slightly forward and upward so that the seedlings 25 placed on it are in contact with the regulation plate 93 and The front and rear positions of the seedlings 25 may be aligned.

The drive side sprocket 6 is attached to a transmission shaft 28 via an electromagnetic clutch 27, and when the electromagnetic clutch 27 is connected, the chain 18 rotates in the direction indicated by arrow a.

The seedling box feeding means 9 and the seedling pushing means 10 are the seedling feeding means 11
It is located near the rear of. The seedling box feeding means 9 includes the first to
As shown in FIG. 5, a pair of left and right guide rails 2 insert the left and right edges of the seedling box 40 and support and guide the seedling box 40 in a vertically slidable manner.
It is equipped with a seedling box guide stand 29 having a diameter of 9a 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, and is loaded by being inserted into the guide rail 29 from above. The seedling box 40 is sent downward by rotation of a feeding sprocket 31 that engages with a feeding hole 30.

The seedling box guide stand 29 is supported by a support 3 erected on the planting frame 7.
It is attached to 2.

This seedling box guide stand 29 has an abbreviated shape (or dogleg shape) when viewed from the side.
The included angle is 90° or more, and the left and right side parts are guide rail parts 29a with a U-shaped cross section, the upper and lower ends are open, the upper part is an entrance 29b for inserting the seedling box 40, and the lower part is a guide rail part 29a. This is an exit 29C from which empty seedling boxes 40 are taken out.

In addition, the seedling box guide stand 29 has connecting parts 29d and 29 at the top and bottom.
e, which connects the upper and lower portions of the left and right guide rail portions 29a, with an opening 29f in the middle. This opening 29f may be formed from at least the vicinity of the starting end to the vicinity of the terminal end of the curved portion of the seedling box guide stand 29, and also serves as a hole for the push rod 41 to protrude.

The upper surfaces of the left and right edges of the seedling box 40 are in contact with the inner surface of the outer circumference of the guide rail section 29a, and a part of the bottom of the pot section 39 at the left and right ends is in contact with the outer surface of the inner circumference of the guide rail section 29a. The seedling box 40 is slid by the guide rail portion 29a without wobbling. 29g is a slit through which the left and right feed sprocket 1-31 enters into the guide rail portion 9a.

A pair of left and right feed shafts 31 are attached to one end of the left and right end shafts 31a supported by the pillars 32, and the left and right end shafts 31a
A transmission sprocket 31b is attached to the other end, and each transmission sprocket 31b is driven by a chain to drive sprockets 33a provided at both ends of the cylindrical shaft 33.

The cylindrical shaft 33 is rotatably supported on a drive shaft 34 and interlocked with the drive shaft 34 via an electromagnetic clutch 35 so as to be freely connected and disconnected. The drive shaft 34 is installed laterally between the columns 32 and is interlocked with the transmission shaft 28 via a bevel gear mechanism 37 in a gear case 36 .

The seedling box 40 is made of flexible synthetic resin, has a rectangular shape as a whole, and has a large number of tapered pot sections 39 with an opening 38 at the bottom arranged vertically and horizontally, and the pot sections 39 are filled with soil. Seedlings 25 are raised in a state where seedlings 26 are placed. The seedling box 4o is loaded between the guide rails 29a of the seedling box sending means 9 so that the seedlings 25 face forward.

The seedling pushing means 10 is for simultaneously pushing out one horizontal row of seedlings 25 in the seedling box 4o onto each seedling receiving device 20 in the vicinity above the seedling receiving device 2o of the seedling feeding device 11. As shown in FIG. 1.2.4.9, this seedling pushing means 10 consists of push rods 41 disposed corresponding to pot portions 39 in one horizontal row of the seedling box 40.
It has an arm 42 that supports the push rod 41, a movable Fi 43 fixed to one end of the arm 42, and a guide rail 45 that supports the movable plate 43 so as to be movable back and forth via a guide roller 44.

The movable plate 43 is connected to the crankshaft 4 via the iron 46.
The push rod 41 is connected to the crank arm 48 of No. 7, and is reciprocated back and forth by the rotation of the crank shaft 47 to push the seedlings 25.
The bed soil 26 is pushed out. crankshaft 47
is rotatably supported by a support plate 49 fixed to the column 32,
Further, it is interlocked with the drive shaft 34 via the gear train 5o and the electromagnetic clutch 51.

The push rod 41 is located in a line passing through the center of curvature of the curved portion of the seedling box guide stand 29 and the axis of the end shaft 31a of the feed sprocket 31, and bends the seedling box 40 to make it easier for the seedlings 25 to come out. The seedlings 25 are arranged so as to be pushed out in this state and in a state in which the position is determined by the feeding sprocket 31.

In order to avoid interference with the feed sprocket 31, the left and right sides of the arm 42 have mounting portions 42a shaped like a letter when viewed from above.

As shown in FIG. 4, the drive shaft 34 is operatively connected to a motor 53 via a chain-like transmission mechanism 52. An index plate 57, which together with proximity switches 54 and 55 constitutes a pulse generator 56, is fixed to the drive shaft 34. As shown in FIG. 8, the index plate 57 has a notch in half of its outer periphery, and an inward notch 58 at one end of the notch.

Proximity switches 54 and 55 are mounted on the fixed side facing the index plate 57, and in synchronization with the rotational speed of the drive shaft 34, the proximity switches 54 generate pulses with a width of about 180° every rotation. Further, the proximity switch 55 is configured to generate a narrow width pulse each time it rotates. Note that 59 is a limit switch for sensing the seedling box, which is attached to the guide rail portion 29a or the like.

A seedling box stopper means 60 shown in FIG. 9 and a seedling box positioning means 61 shown in FIG. 1.2 are provided near the bottom of the seedling pushing means IO.

The seedling box stopper means 60 comes into contact with the lower edge of the seedling box 40 loaded on the seedling box guide stand 29 to align the center of the bottom pot section 39 of the seedling box 40 with the position of the push rod 41. It is.

The stopper 60a of the seedling box stopper means 60 is inserted into and supported by a bracket 62 fixed to the support column 32 so as to be slidable back and forth, and is biased rearward by a spring 63.

The stopper 60a is connected to a lever 65 via a rod 64. The lever 65 is pivotally supported by a pin 66 on the support plate 49, and is biased by a spring 69 so as to be able to switch unstably into contact with the pins 67, 68. Therefore, by operating this lever 65 back and forth, the 7th bar 60a can move the seedling box 4.
It can be moved in and out to engage and disengage from zero. Note that 70 is a limit switch for lever sensing, which is activated when the seedling box stopper means 60 is released.

The seedling box positioning means 61 works in conjunction with the seedling pushing means 10 to position the seedling box so that the opening 38 of the bot part 39 is aligned with the push rod 41 before the push rod 41 pushes the floor 26 of the seedling 25. This is for vertical correction.

This seedling box positioning means 61 is a part of the extruded pot part 39.
A positioning roller 71 that can be freely fitted and removed from the front side, and a roller 7
1 and is pivotally connected to a seedling box guide stand 29 or the like by a bin 72 so as to be swingable back and forth, and a connecting rod 75 that connects the arm 73 to a crank arm 74 of a crankshaft 47. As shown in FIG. 10, the connecting loft 75 has a cylindrical body 76 and a rod 77 inserted therein, and has a long hole 7.
It is configured to be expandable and contractible within a range of 8 by means of a bottle 79 and a spring 80. The seedling box positioning means 61 is provided at both left and right ends, the center, or both of the seedling box 40.

FIG. 11 shows a block diagram of the control system. 81 is a main switch, and 82 is a planting start switch. 83 is a control means that controls the motor 53 in accordance with a predetermined control sequence using signals from switches 54.55, 59, 70, 81.82, and connects the electromagnetic clutches 27, 35.51 intermittently. It has become. The control means 83 is constituted by a microcomputer or the like having a function of counting pulses from the proximity switch 54 as well as other arithmetic processing functions.

Next, the operation will be explained with reference to the time chart shown in FIG. In the transplanting operation, the seedling box 4° is first inserted and loaded into the seedling box guide table 29 of the seedling box feeding means 9 from the upper part 29b, and then locked by the seedling box stopper means 60. At this time, if the main switch 81 is turned on, the limit switch 59 senses the seedling box 4o. Next activation switch 8
2, the motor 53 rotates via the control means 83, and the seedling box stopper means 60 is released by the lever 65. At this time, the limit switch 70 is activated. When the motor 53 rotates, the drive shaft 34 rotates and the index plate 57 of the pulse generating means 56 rotates, so the proximity switches 54 and 55 intermittently generate pulses, and the control means 83 causes each electromagnetic clutch to rotate. 27. Enter the control operation of 35.51.

That is, when the drive shaft 34 and index plate 57 rotate, the control means 83 gives an operation signal to the electromagnetic clutch 51 of the seedling pushing means 10, so the electromagnetic clutch 51 is connected and the drive shaft 3
4, the crankshaft 47 rotates. As a result, the movable plate 43 moves back and forth once along the guide rail 45, and the push rod 41 pushes the bed soil 26 of the bottom row of pot sections 39 from behind, pushing the seedlings 25 to the stopped seedlings. The seedlings are transferred onto the seedling holder 20 of the feeding means 11. At this time, the arm 73 of the seedling box positioning means 61 swings in conjunction with the roller 71.
is located below the seedling box 40 and has no effect.

Next, when a pulse from the proximity switch 54,55 is input, the control means 83 gives an operating signal to the electromagnetic clutch 27 of the seedling feeding means 11, and the electromagnetic clutch 27 is connected. Therefore, the chain 18 of the seedling feeding means 11 rotates, and the seedlings 25 on the seedling holder 20 are sent by one pinch toward the planting means 12 side.

Thereafter, each time a pulse is received from the proximity swifters 54 and 55, the control means 83 intermittently applies an operation signal to the electromagnetic clutch 27 for the number of seedlings in one horizontal row of the seedling box 40, thereby controlling the number of seedlings 27 on each seedling holder 20. are sequentially sent to the planting means 12 side.

When the seedling holder 20 reaches the notch 21 of the guide plate 19, the seedling supply means 90 is activated, and the seedling holder 20 is rotated around the pin 23 by the spring 24, and the seedling 25 thereon is planted. Since the seedlings 25 are dropped between the pair of planting discs 15 of the planting means 12 and supplied, as the planting discs 15 rotate, the seedlings 25
Plant in the planting groove.

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

When the final feeding operation of the seedlings 25 by the seedling feeding means 11 is completed, the seedlings 25 on the seedling holder 20 are laterally disengaged from the front of the seedling pushing means 10, so that the control means 83 is activated by the electromagnetic clutch 51.
The electromagnetic clutch 51 is connected, and the seedling pushing means 10 pushes out the seedlings 25 in one horizontal row of the 12th stage onto the seedling receiver 20.

On the other hand, when pushing out seedlings from the first and second stage onwards, the seedling box positioning means 61 is operated to correct the position of the seedling box 4o up and down. That is, when the crankshaft 47 rotates, it pulls the arm 73 via the loft 75, so the arm 73 swings around the pin 72, and the roller 71 fits into the extruded pot portion 39.

For this reason, even if the seedling box 4o is slightly misaligned vertically when sending the seedling box, the roller 71 fits into the pot part 39 and moves the seedling box 40 up and down, so that the tip of the push rod 41 moves upward and downward toward the pot part 39. The push rod 41
There is no risk that the liquid will come into contact with the pot portion 39.

In addition, since the seedling box 40 is pressed by the roller 7e, the seedling box 40
The floor ±26 can easily come out from the pot part 39 of 0.

Even if the start switch 82 is turned off during the transplant operation, the motor 53
rotates until the current seedling feeding operation is completed and then stops. Furthermore, since the control means 83 stores the number of planted plants on the counter, when the start switch 82 is turned on again, counting starts from the next number.

If the limit switch 59 detects that the seedling box is out, the seedling box 4
After pushing out and planting the last horizontal row of seedlings 25, the motor 53 stops. Therefore, it is only necessary to load another seedling box 40 after that.

Figures 13 and 14 show a seedling box 40B that can be used for doglegged and linear seedling box guides. This seedling box 40B is horizontal 1
Unit boxes 97 in which rows of seedlings are planted are connected vertically with chains 9B.

The unit box 97 is made of hard synthetic resin, and pins 99 are installed at both left and right ends of the unit box 97, and the pins 99 of adjacent unit boxes 97 are connected by links 100.

This seedling box 40B can freely set the length in the vertical direction, can be inserted even if the seedling box guide stand 29 is curved at two or more places, and can be rolled up and transformed into a compact shape after taking out the seedlings. .

Although the seedling box 40 is arranged so that the seedlings 25 face forward, this is determined by the relationship with the planting means 12, and the seedlings 25 are arranged so as to face backward or left and right. You can also do that.

In addition, although the planting means 12 adopts a disc shape,
A cylindrical type may be used, in which an inverted conical cylinder into which seedlings are dropped is lowered into the soil, and then the bottom is opened and the seedlings are planted.

(Effects of the Invention) According to the present invention described in detail above, the seedling box guide stand 29 is curved in a substantially L-shape when viewed from the side, and extends from at least the vicinity of the starting end of the curved portion between both the idle rail portions 298 and between the entrances and exits 29b and 29c. Since the opening 29f that avoids contact with the bottom of the pot part 39 is formed near the end, the seedling box 40 has low feeding resistance even near the entrances and exits 29b and 20c of the seedling box guide stand 29 and at curved parts, and can be fed smoothly. The seedlings 25 can be fed accurately to the push rod 41 of the seedling pushing means 10.

[Brief explanation of drawings]

1 to 12 show an embodiment of the present invention, FIG. 1 is a cross-sectional side view of the main part, FIG. 2 is a cross-sectional plan view of the main part, FIG. 3 is a schematic front view, and FIG. 4 is a cross-sectional side view of the main part. A configuration diagram of the drive system, Fig. 5 is a perspective view of the seedling box guide stand, Fig. 6 is a side view of the entire transplanter, Fig. 7 is a cross-sectional side view of the seedling supply means, and Fig. 8 is a side view of the pulse generator. Figure 9 is a cross-sectional side view of a part of S)7, Figure 10 is a cross-sectional view of Rondo, Figure 11 is a block diagram, Figure 12 is a time chart, Figures 13 and 14 are modifications of the seedling box. It is a top view and side explanatory view which show an example. ■... Machine frame, 7... Planting frame, 9... Seedling box feeding means, 10... Seedling pushing means, 11... Seedling feeding means, 12... Planting means, 25. ... Seedling, 29... Seedling box guide stand, 29a... Guide rail section, 29b...
Entrance, 29c...Exit, 29f...Opening, 39.
... Pot part, 40 ... Seedling box, 41 ... Push rod, 9
0... Seedling supply means.

Claims (1)

[Claims] (1) Place the entrance (29b) on the top of the seedling box guide stand (29).
Exit (29c) at the bottom, entrance (29b) (20c)
Guide rail portions (29a) are formed on both lateral sides of the gap,
A seedling box (4) in which a large number of pot parts (39) are arranged vertically and horizontally.
0) from the entrance (29b) and while guiding it with both guide rail parts (29a), push the push rod (41) of the seedling pushing means (10) out of the pot part (39) one horizontal row at a time. In the seedling box feeding device of the transplanter that can feed the seedling box in a forward direction, the seedling box guide stand (29) is curved in a substantially L-shape when viewed from the side,
Between both guide rail parts (29a) and the entrance/exit (29b)
(29c) An opening (29f) for avoiding contact with the bottom of the pot part (39) is formed at least from the vicinity of the starting end to the vicinity of the terminal end of the curved part between the parts (29c). .