JP2009082089A - Separator of transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To more certainly separate leaves of adjacent seedlings in a seedling box. <P>SOLUTION: The separator 2 of a transplanter is equipped with a support shaft 31, a separating plate 32 and a drive mechanism 33. The support shaft 31 is protrudingly installed above a seedling box transport path 13a in reverse transport direction of a pot seedling box T to receive a seedling P in the pot seedling box T transported along the seedling transport path 13a. The separating plate 32 is protrudingly installed on the tip side of the support shaft and the upper peripheral surface along the longitudinal shaft direction. The drive mechanism 33 is connected to the base end side of the support shaft and reciprocally rotates the support shaft 31 to swing the separating plate 32. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a weeding device for separating adjacent seedling leaves in a seedling box in a transplanter.

  As a background art of this kind of weeding device, the separation comb equipped in the seedling transplanter of Patent Document 1 is exemplified.

  As shown in FIG. 5, the seedling transplanter uses a seedling tray T made of a plastic having flexibility, and pots Ta are arranged in a row at a predetermined pitch x. A wide interval portion Tb having a wide interval between the pots Ta is provided at the left and right central portions of the seedling tray T. Further, square holes Tc for feeding seedlings are formed at the same pitch as the pot Ta on both left and right edges of the seedling tray T.

  This seedling transplanter includes a seedling tray feeding device that transports the seedling tray T along the seedling tray transport path, a seedling extraction device that extracts seedlings from the seedling tray T at the seedling extraction position, and the extracted seedlings on the lower front side. A seedling transporting device that transports along a trajectory that draws an arc, a pair of left and right seedling feeding belts that laterally feed the seedlings for one horizontal row transported by the seedling transporting device to the left and right sides in half, and the seedling feeding belt A seedling planting device is provided for receiving the seedlings conveyed and planting them in the field.

  As shown in FIG. 5, a separation comb 81 is provided at the upper portion of the seedling tray conveyance path to separate the entanglement of leaves between the seedlings adjacent in the lateral direction. This separating comb 81 has rod-like teeth 81a, 81b,... Arranged in parallel between the paths of the seedlings in the row. By this separation comb 81, the leaves of adjacent seedlings in the seedling tray T are separated in advance, and the seedling feed belt after being taken out from the seedling tray T or by the entanglement of adjacent seedlings with the seedling planting device I try to prevent problems.

  Moreover, the aspect shown in FIG. 6 is also disclosed as a modified example of the separation comb. The separation comb 85 is supported by a pivotable support shaft 85 a in the upper part of the seedling tray conveyance path 84. A cam 85b is attached to the planting drive shaft 86 of the seedling planting device, and the movement of the arm 85c that contacts the outer peripheral surface of the cam 85b is transmitted to the support shaft 85a of the separation comb. The arm 85c is pressed against the cam 85b by the tension of the spring 85d.

JP 2002-125212 A

  However, in the conventional separation combs 81 and 85, the rods between adjacent seedlings and a plate that vibrates in the direction of conveying the seedling box are passed, so that the entanglement between the leaves of the seedlings is only released. Thereafter, each leaf returns to its original position, and there is a problem that the leaves may be entangled again.

  If the separation comb is formed thick in the left-right direction of the seedling box, it may be configured to widen the spacing between the leaves of adjacent seedlings, but then the passage resistance of the seedling against the separation comb increases, There is a possibility that trouble may occur in the transportation of the seedling box (especially in the case of transportation by the weight of the seedling box and the seedling).

In order to solve the above problems, a weeding device for a transplanter of the present invention is:
A support shaft projecting in the anti-conveying direction of the seedling box above the seedling box conveying path so as to wait for the seedling of the seedling box transferred along the seedling box conveying path;
A weed plate projecting along the axial length direction on the support shaft tip side and upper peripheral surface;
A drive mechanism connected to the base end side of the support shaft and configured to reciprocally rotate the support shaft so that the weed plate swings.

  According to this configuration, the weed plate swings around the support shaft, so that not only the leaves of adjacent seedlings are entangled but also the leaves are brazed so as to widen the intervals between the leaves. By doing so, leaves can be prevented from being entangled again after passing through the weeding device of the present invention.

  According to the weeding device of the transplanter according to the present invention, there is an excellent effect that the leaves of adjacent seedlings in the seedling box can be more reliably separated.

  1 to 4 show a weeding device 2 of a transplanter 1 according to an embodiment of the present invention. As shown in FIGS. 1 and 2, the transplanter 1 of this example is provided with a machine body 11 that is movably supported by left and right traveling wheels (not shown), an upper part of the machine body 11, and a pot seedling box T And a seedling extraction device 14 equipped with a seedling receiving stand 12 for taking out seedlings P (pot seedlings in this example) from the pot seedling box T one by one in a row. The seedling transport device 15 that transports the seedlings P one by one, the groove excavator 18 that forms a planting groove in the field, and the seedling P that has been transported by the seedling transport device 15 and receives the rear of the trench excavator 18 The planting device 16 for planting in the planting groove and a pair of left and right earthen wheels 17 for backfilling the planting groove behind the planting device 16 are provided. In each figure, the arrow F indicates the front side of the aircraft.

  The pot seedling box T of this example is configured in the same manner as the conventional example. Specifically, the pot seedling box T is made of plastic having flexibility, and the pot seedling chambers Ta are continuously arranged vertically and horizontally at a predetermined pitch x. . In the left and right center part of the pot seedling box T, a wide interval part with a wide interval between the pot seedling chambers Ta is provided. In addition, on both left and right edges of the pot seedling box T, seedling feeding holes are formed at the same pitch as the pot.

  In the seedling extraction device 14, as shown in FIG. 1, the pot seedling box T is curved in the seedling table 13 and is intermittently fed one row at a time, and the extrusion basket provided at the rear of the seedling table 13 at a predetermined position. 21 rushes into the pot seedling chamber Ta in a horizontal row of the pot seedling box T, pushes the seedling P forward, and pushes the root portion into the seedling receiving groove of the seedling receiving base 12 provided forward. Subsequently, the seedling receiving base 12 that has received the seedling P rotates downward while inverting the seedling P in the reverse direction. At this time, the seedling receiving groove is positioned at the position of the spring-out member 28 with the root of the seedling P first. Pass through. As a result, the seedlings P for one horizontal row are pushed out of the seedling receiving grooves, and fall onto the pair of left and right transport belts 30 that laterally feed the seedlings P for one horizontal row to the left and right sides.

  As shown in FIGS. 1, 3 and 4, the weeding device 2 is configured to wait for the pot seedling box T transferred along the seedling box transporting path 13 a of the seedling mount 13 so as to wait for the seedling box transporting path. A support shaft 31 projecting in the anti-conveying direction of the pot seedling box T above 13a, a weed plate 32 projecting along the axial length direction on the distal end side of the support shaft and on the upper peripheral surface, A drive mechanism 33 is provided that is connected to the base end side of the support shaft 31 and reciprocally rotates the support shaft 31 so that the weed plate 32 swings left and right.

  The support shaft 31 of this example is supported by the seedling extractor 14 through a bearing 34 in the middle portion and the base end portion in the axial length direction, and a flexible wire 31a is formed between the both bearings 34. .

  The weed plate 32 is formed such that the protrusion width on the distal end side of the support shaft 31 is narrow and becomes wider toward the proximal end side. By making the protruding width of the weed board 32 narrower toward the tip side of the support shaft 31, it can be smoothly inserted between the leaves of adjacent seedlings P. In addition, by widening the protruding width of the weed board 32 on the base end side of the support shaft 31, the action of releasing the entanglement between the leaves of the adjacent seedlings P and the leaves so as to widen the distance between the leaves. The brazing action can be effectively demonstrated. The swing angle A of the weed plate 32 is not particularly limited, but is set to about 60 ° in this example.

  In this example, the drive mechanism 33 is a lever-crank mechanism that changes the rotational motion to a swing motion. When the crank 37 is rotated by the drive shaft 36, the lever 39 swings via the link 38. It is configured. In this example, the drive shaft 36 is driven by a drive force taken out from a drive mechanism (not shown) of the seedling extraction device 14.

  FIG. 4 is a diagram showing the operation of the weeding device 2 of the present invention, where FIG. 4 (a) shows the state of the pot seedling box T before passing through the weeding device 2, and FIG. The state of the pot seedling box T passing through the grass device 2 is shown.

  According to the weeding device 2 of the transplanter 1 of the present example configured as described above, the weeding plate 32 swings around the support shaft 31 to untangling the leaves of the adjacent seedlings P. Not only can the leaves be entangled again after passing through the weeding device 2 of the present invention by brazing the leaves so as to widen the interval between the leaves.

In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(1) Change the shape of the weed board 32 as appropriate.
(2) Change the swing angle A of the weed board 32 as appropriate.
(3) Driving the drive shaft 36 of the drive mechanism 33 with a drive force different from that of the above embodiment.
(4) The drive mechanism 33 for reciprocatingly rotating the support shaft 31 is realized by a mechanism different from the lever / crank mechanism.

It is a side view of the weeding device of the transplanter concerning one embodiment which materialized the present invention. It is a perspective view which shows the principal part of the transplanter in the lower side of the weeding device. It is a III arrow directional view of FIG. It is IV arrow line view of FIG. It is a front view which shows the separation comb of the conventional seedling transplanter. It is a side view which shows the example of a change of the separation comb.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 transplanting machine 2 weeding device 11 machine body 12 seedling receiving stand 13 seedling placing stand 13a seedling box transport path 14 seedling picking device 15 seedling transporting device 16 planting device 17 earthen wheel 18 groove digger 21 extrusion rod 28 jumping member 30 Conveying belt 31 Support shaft 31a Flexible wire 32 Weed plate 33 Drive mechanism 34 Bearing 36 Drive shaft 37 Crank 38 Link 39 lever A swing angle P seedling T pot seedling box Ta pot x pitch

Claims (1)

A support shaft projecting in the anti-conveying direction of the seedling box above the seedling box conveying path so as to wait for the seedling of the seedling box transferred along the seedling box conveying path;
A weed plate projecting along the axial length direction on the support shaft tip side and upper peripheral surface;
A weeding device for a transplanting machine, which is connected to a base end side of the supporting shaft and includes a drive mechanism for reciprocatingly rotating the supporting shaft so that the weeding plate swings.

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