JP5832458B2 - Seedling transplanter - Google Patents

Description

  The present invention relates to a seedling transplanter that continuously takes out and transplants seedlings grown in each pot of a continuous collecting pot.

  Conventionally, when the operator checks the handle and advances the machine base, a single planting groove is formed on the planting surface of the field by the opener, and the continuous potted seedling drawn from the continuous collecting pot body into this planting groove A seedling transplanter to be transplanted is known (see, for example, Patent Document 1). In this seedling transplanter, since the seedling planting interval (hereinafter referred to as “between strains”) depends on the spacing between the pots in the continuous potted seedlings, the strains are substantially fixed and the strains are set relatively narrow. Application was limited to crop transplantation.

  Therefore, a seedling transplanting machine has been developed in which the seedling transplanting machine is pushed by hand, the seedling transplanting machine is positioned using the seedling planted immediately before in the field as an index, and then the operation part is manually operated to plant seedlings in the field. (For example, refer to Patent Document 2). In this seedling transplanter, it is possible to transplant seedlings between arbitrary strains without depending on the spacing of pot bodies in continuous potted seedlings, but positioning of the seedling transplanter and operation of the operation part (planting of seedlings) Therefore, it is difficult to improve work efficiency.

  In addition, although a seedling transplanting machine called a bi-pitch transplanting machine that can change between strains as needed is put into practical use, the bi-pitch transplanting machine requires a prime mover such as an engine and a motor as a drive source. The transplanter becomes larger and heavier, making handling difficult. In addition, it is difficult to introduce to small-scale farmers due to large capital investment at the time of introduction.

JP-A-8-89028 JP 2008-29326 A

  Then, this invention was made | formed in view of the said situation, and it was made as a subject to provide the seedling transplanting machine which can be easily managed and can implement the change between strains easily.

In order to solve the above-mentioned problem, the seedling transplanter of the present invention has a planting groove formed in the field by an opener provided on the grounding surface of the machine base by pulling the handle and moving the machine base forward. In parallel, the continuous potted seedling is pulled out from the seedling placement unit by the thin film peeling device and the bonded portion of the continuous potted seedling pulled out is sequentially peeled off so that the soil block seedling is removed from each potted body of the continuous potted seedling. A seedling transplanting machine that is individually taken out and the soil block seedlings are sequentially dropped into a seedling inlet provided in the machine base and planted in the planting groove, wherein the thin film peeling apparatus is configured to peel the adhesive portion At least a pair of peeling rollers for carrying the thin films separated by the at least one pair, at least a pair of drawing rollers for pulling out the thin films carried by the at least one pair of peeling rollers, A winding roller that winds up each thin film united by the take-out roller, and the seedling transplanter is grounded on a field and rolled as the machine base advances, and the drive A drive shaft that is fixed to the wheel and rotated about the axis as the drive wheel rolls; and a rotational force transmission mechanism that transmits the rotational force of the drive shaft to the rotational shafts of the pair of drawing rollers. The rotational force transmission mechanism is disposed in a rotational force transmission path between the drive shaft and the pair of drawing rollers, and is supported by the machine base so as to be rotatable around the shaft, A drive vehicle attached to the drive wheel and a driven vehicle attached to the first transmission shaft, and changing the rotation ratio between the drive vehicle and the driven vehicle, so that the seedlings planted in the planting groove Is changed .

According to the present invention, it is possible to change between stocks as required by changing the rotation ratio between the driving vehicle and the driven vehicle .

It is a top view of the seedling transplanter of a 1st embodiment. It is a left view of the seedling transplanter of 1st Embodiment. It is explanatory drawing of the seedling transplanting machine of 1st Embodiment, Comprising: It is a figure for demonstrating the adjustment function of an opener and a cultivating board especially. It is the elements on larger scale of the thin film peeling apparatus in FIG. It is explanatory drawing of a shutter, Comprising: (A) is a figure which shows the state in which the width | variety of the shooter was set to the minimum, (B) is a figure which shows the state in which the width | variety of the shooter was set to the maximum. It is a top view of the seedling transplanter of a 1st embodiment, and is a figure showing the state at the time of transplanting a seedling. It is a left view of the seedling transplanting machine of a 1st embodiment, and is a figure showing the state at the time of transplanting a seedling. It is explanatory drawing of the seedling transplanter of 1st Embodiment, Comprising: It is a figure for demonstrating especially the effect | action of a seedling holding plate, a funnel, and a shooter. It is explanatory drawing of the seedling transplanter of 1st Embodiment, Comprising: It is a figure for demonstrating especially the effect | action of a feed roller. It is a left view of the rear part of the seedling transplanting machine of a 1st embodiment, and is a figure showing the mode of a seedling transplanting machine provided with a pressure reducing roller especially. It is explanatory drawing of the seedling transplanter of 2nd Embodiment, Comprising: It is a top view of a seedling conveyance apparatus especially. It is explanatory drawing of the seedling transplanting machine of 2nd Embodiment, Comprising: It is a left view of a seedling conveying apparatus especially. It is explanatory drawing of the seedling transplanting machine of 3rd Embodiment, Comprising: It is a top view of a seedling conveyance apparatus especially. It is explanatory drawing of the seedling transplanter of 3rd Embodiment, Comprising: It is a left view of a seedling conveyance apparatus especially.

(First embodiment)
A first embodiment of the present invention will be described with reference to the accompanying drawings.
For convenience of explanation, the right direction in FIGS. 1 and 2 is the forward direction (front), the left direction in FIGS. 1 and 2 is the rear direction (rear), the upper direction in FIG. 1 is the right direction, and the lower direction in FIG. The direction is defined as the left direction. 2 is a left side view of the seedling transplanter 1 according to this rule.

  As shown in FIGS. 1 and 2, the seedling transplanter 1 includes a machine base 2 having a rear lower surface as a ground surface, a drive shaft 4 that extends in the left-right direction and has drive wheels 3 attached to both ends, Have The drive wheel 4 is supported by a pair of bearings attached to the front end portion of the machine base 2 so as to be rotatable about its axis. In addition, the seedling transplanting machine 1 has a handle 5 for pulling the machine base 2 at the upper end portion, and has a retractable pulling member 6 whose lower end portion is connected to the central portion of the drive shaft 4 via a bearing. . A claw 8 is provided on the outer periphery of each drive wheel 3 to prevent the idling of each drive wheel 3 by biting into the field 7.

  The seedling transplanter 1 has a seedling stand 11 (seedling placement unit) that supports a seedling tray 10 that accommodates continuous potted seedlings 9. The seedling table 11 has a front end portion supported by the pulling member 6 and a rear end portion supported by the machine base 2. When the seedling tray 10 is set on the seedling stand 11, the seedling tray 10 is disposed on the front side of the machine base 2 and has a posture in which the rear side has a low inclination.

  An opener 12 for forming a planting groove in the agricultural field 7 is provided on the ground surface of the machine base 2. As shown in FIG. 3, the opener 12 is formed in a box shape whose front end is closed at an acute angle, and a pair of movable walls 14 extend rearward from a pair of side walls 13 opposed to the front end. Yes. The pair of movable walls 14 is bent at the ridgeline with each side wall 13 so that the wall interval can be adjusted according to the seedling 15 to be transplanted (referred to as “soil block seedling 15” as necessary). It is configured. Further, the opener 12 has a symmetrical mounting flange 16, and in order to keep the seedling 15 in a vertical position by using a long hole 17 formed in the mounting flange 16 extending in the front-rear direction, Depending on the body, that is, the diameter of the lump portion 15b (see FIG. 8) of the soil block seedling 15, the mounting position with respect to the machine base 2 can be adjusted in the front-rear direction.

  Below the rear end of the machine base 2, a pair of cultivating plates 18 that scrape the surrounding soil toward the planting groove where the seedlings 15 are planted are provided. As shown in FIG. 3, the pair of culturing plates 18 can change the mounting position of each culturing plate 18 by using a long hole 19 formed in each cultivating plate 18 and extending in the left-right direction. Or according to a magnitude | size, it is comprised so that the distance (space | interval) between the cultivating board 18 which opposes can be adjusted. In addition, a chisel 29 is provided at the front end of the machine base 2 to prevent the front end of the machine base 2 from lifting when the seedling transplanter 1 moves forward. The chisel 29 is configured such that the mounting angle can be adjusted with respect to the horizontal plane. Here, the diameter of the seedling 15 refers to the diameter (width) of the mass portion 15b (see FIG. 8), and the size of the seedling 15 refers to the overall dimensions (height etc.) including the leaf portion 15a (see FIG. 8). Point to.

  The seedling transplanting machine 1 pulls out the continuous potted seedling 9 from the seedling tray 10 attached to the seedling stand 11, and sequentially peels the bonded portions of the drawn continuous potted seedling 9 to form a pot body formed between the bonded portions. A thin film peeling device 20 for individually removing the soil block seedlings 15 from the soil. The thin film peeling device 20 is a pair of peeling rollers for carrying each thin film 21 separated (torn) in the left direction and the right direction by peeling the bonded portion of the continuous potted seedling 9 drawn from the seedling tray 10. 22. Each peeling roller 22 is attached to each attachment piece 52a of a pair of seedling guide plates 52 (seedling guide members), which will be described later, and is a length extending in the front-rear direction formed on the machine base 2 as shown in FIG. A combination of the hole 24, the elongated hole 25 formed in each mounting plate 52a extending in the left-right direction, and the butterfly bolt 26 is configured so that the mounting position can be adjusted in the front-rear direction and the left-right direction.

  The thin film peeling device 20 has a pair of drawing rollers 27 and 28 that unite and hold the thin films 21 carried by the pair of peeling rollers 22 and send (draw out) them backward. The drawing roller 28 on the right side is transmitted with a rotational force (driving force) of the drive shaft 4 by a rotational force transmission mechanism 30 which will be described later, to a rotational shaft 28 a provided perpendicular to the upper surface of the machine base 2. It is configured to be driven to rotate about an axis. The left drawing roller 27 is supported to be rotatable about an axis by a rotation frame 31 provided on the upper surface of the machine base 2 so as to be rotatable about a rotation shaft 31a.

  The rotating frame 31 is urged counterclockwise in FIG. 1 by a spring 23 provided inside the machine base 2 around the rotating shaft 31a. As a result, the driven gear 32 fixed to the upper end portion of the rotation shaft 27a of the drawing roller 27 is engaged with the drive gear 33 fixed to the upper end portion of the rotation shaft 28a of the drawing roller 28, and the rotational force of the rotation shaft 28a is increased. While being transmitted to the rotating shaft 27 a, the drawing roller 27 is pressed against the drawing roller 28. The rotation frame 31 has a lever 34. By operating the lever 34, the rotation frame 31 and the pull-out roller 27 are moved against the urging force of the spring 23 so that the rotation shaft 31a is moved. It is comprised so that it can be rotated in the clockwise direction in FIG. Further, the drive gear 33 and the driven gear 34 use gears of the same specification, and are configured to rotate in reverse at the same rotational speed.

  Further, a winding roller 35 is provided on the upper surface of the rear end portion of the machine base 2 so that the thin films 21 carried by the pair of drawing rollers 27 and 28 are united and wound up. The take-up roller 35 is configured to be driven to rotate about an axis when the rotational force of the rotary shaft 28a of the drawing roller 28 is transmitted to the take-up shaft 35a. The endless chain 36 is wound around the sprocket attached to the rotating shaft 28a and the sprocket attached to the winding shaft 35a, so that the rotational force of the rotating shaft 28a of the drawing roller 28 is transmitted to the winding shaft 35a. Thus, the take-up roller 35 is rotated in conjunction with the rotation of the drawing roller 28.

  As shown in FIG. 1, the aforementioned rotational force transmission mechanism 30 is disposed in parallel to the drive shaft 4 and is disposed in front of the pair of peeling rollers 22 and can be rotated around the axis by the machine base 2. The first transmission shaft 37 supported by the first transmission shaft 37 is arranged in parallel to the first transmission shaft 37 and arranged at a certain interval immediately above the first transmission shaft 37 and rotated about the axis by the machine base 2. And a second transmission shaft 38 which is supported in a possible manner. Further, the rotational force transmission mechanism 30 includes drive sprockets 39a and 39b (drive vehicle) mounted between the machine base 2 of the drive shaft 4 and the right drive wheel 3, and a first transmission projecting outside the machine base 2. It has the 1st sprocket 40 (follower vehicle) attached to the right end part of the axis | shaft 37 so that attachment or detachment is possible, and the endless chain 41 wound around the drive sprocket 39a or 39b and the 1st sprocket 40.

Further, the rotational force transmission mechanism 30 protrudes outside the machine base 2 and a first gear 42 (first rotary body ) that is detachably attached to the left end portion of the first transmission shaft 37 that protrudes outside the machine base 2. And a second gear 43 (second rotating body ) that is detachably attached to the left end portion of the second transmission shaft 38 and meshed with the first gear 42. The seedling transplanting machine 1 is a gear pair of gears configured by combining the gear ratio (rotation ratio) between the drive sprockets 39a, 39b and the first sprocket 40, or the first gear 42 and the second gear 43. Based on the ratio (rotation ratio), the strain between the seedlings 15 planted in the planting groove is determined. In other words, by changing the drive sprockets 39a, 39b combined with the first sprocket 40 or the gear ratio (combination) between the first gear 42 and the second gear 43, the strain of the seedling 15 planted in the planting groove is changed. Configured as follows.

  The rotational force transmission mechanism 30 includes, in order from the drive shaft 4 side, a drive sprocket 39a or 39b, an endless chain 41, a first sprocket 40, a first transmission shaft 37, a first gear 42, a second gear 43, and a second transmission. Shaft 38, second sprocket 44 attached to second transmission shaft 38, third transmission shaft 45 disposed parallel to second transmission shaft 38, third sprocket 46 attached to third transmission shaft 45, second An endless chain 47 wound around the sprocket 44 and the third sprocket 46, and one is fixed to the third transmission shaft 45 and the other is fixed to the rotating shaft 28 a of the right drawing roller 28 and meshed with each other. The gear pair 48 forms a rotational force transmission path.

  As shown in FIGS. 1 and 2, a pair of feed rollers 49 (hereinafter simply referred to as feed rollers) arranged to face each other are fixed to the central portion of the second transmission shaft 38. The feed roller 49 has a part of the outer periphery (upper part) exposed on the upper surface of the machine base 2, and comes into contact with the bottom of the continuous potted seedling 9 drawn from the seedling raising tray 10, thereby The taken out soil block seedling 15 is provided on the machine base 2 and is sent to a seedling inlet 50 arranged immediately after the feed roller 49. A plurality of grooves (convex portions) extending in parallel with the axis of the second transmission shaft 38 are formed on the outer periphery of the feed roller 49 at regular intervals in the circumferential direction. The peripheral speed of the feed roller 49 is set to be the same or slightly higher than the pulling speed (conveying speed) of the continuous potted seedling 9 by the pair of pulling rollers 27 and 28.

  In addition, on the upper surface of the machine base 2, the above-described pair of seedling guide plates 52 disposed on both the left and right sides with the seedling insertion port 50 interposed therebetween is provided in order to keep the soil block seedling planting posture vertical. Each seedling guide plate 52 extends forward so as to straddle each thin film 21 carried by each peeling roller 22. In addition, each seedling guide plate 52 can adjust the space | interval between a pair of seedling guide plates 52 by adjusting the space | interval between the opposing side walls of the seedling presser plate 53 mentioned later. Further, as described above, each seedling guide plate 52 is configured to be able to adjust the mounting position in the front-rear direction and the left-right direction by the combination of the long hole 24, the long hole 25, and the butterfly bolt 26. ing. Moreover, the form of the pair of seedling guide plates 52 (seedling guide members) may be a plate shape or a rod shape.

  As shown in FIG. 2, between the pair of seedling guide plates 52, the above-described seedling presser plate 53 that receives the soil block seedling 15 sent out by the feed roller 49 and guides it to the seedling inlet 50 is provided. As shown in FIG. 4, the seedling presser plate 53 is formed in a U-shaped cross section by combining plate members having a L-shaped cross section, and according to the seedlings 15 to be transplanted (a pair of seedlings) Depending on the spacing between the guide plates 52, it is possible to adjust the spacing between the opposing side walls. In addition, the height and angle of the seedling holding plate 53 can be adjusted by a combination of a screw hole 53 provided in a vertical line on each side wall and a long hole 54 formed in the pair of seedling guide plates 52. Configured to be able to.

  As shown in FIG. 2, below the seedling inlet 50, a shooter 55 that is attached to the inside of the machine base 2 and guides the seedling 15 that has fallen to the seedling inlet 50 toward the planting groove is provided. As shown in FIGS. 5A and 5B, the shooter 55 is formed bilaterally by sheet metal and is divided in the left-right direction. The shooter 55 has a plurality of (four in the first embodiment) side walls 56 extending downward, and a pair of slats 57 arranged facing both the left and right sides and extending upward. .

  The shooter 55 has a pair of mating margins 58 formed at the front end, and as shown in FIG. 5 (B), only the lower portion of the mating margin 58 is fixed with a bolt or the like to open the upper portion. Thus, the diameter is adjusted according to the seedling 15 to be transplanted. The shooter 55 has a structure in which the attachment angle of each side wall 56 is adjusted according to the seedling 15 to be transplanted in order to keep the posture of the seedling vertical by bending each side wall 56 by hand.

  As shown in FIG. 4, the machine base 2 is provided with a funnel 59 that guides the seedling 15 received by the seedling holding plate 53 and falling to the seedling inlet 50 toward the shooter 55. The funnel 59 has a semicircular receiving portion whose front side is opened, and a plurality of (six in the first embodiment) inclined walls 60 provided along the receiving portion and extending downward. The funnel 59 can be adjusted in attachment position according to the seedling 15 to be transplanted, and the inclination angle, that is, the diameter of each inclination wall 60 can be adjusted by bending each inclination wall 60 by hand. Configured as follows.

Next, the operation of the first embodiment will be described.
First, the continuous potted seedling 9 is pulled out from the seedling tray 10 set on the seedling stand 11, and the portion of the drawn continuous potted seedling 9 is separated. The separated thin films 21 are passed through the corresponding peeling rollers 22 and then held together by a pair of drawing rollers 27 and 28. The front end of the united (two) thin films 21 is attached to a winding roller 35.

  The mounting position of the opener 12 and the distance between the pair of movable walls 14, the mounting position of the pair of peeling rollers 22, the distance between the pair of seedling guide plates 52, the mounting height and angle of the seedling presser plate 53, and the shooter 55 The caliber and the like are adjusted in advance. Further, the drive sprocket 39a or 39b to be combined with the first sprocket 40 is selected so as to correspond to the stocks in which the gear ratio is required. Further, the first gear 42 and the second gear 43 are combined so as to correspond to the stocks requiring a gear ratio. In the first embodiment, it is possible to change between the stocks more greatly by changing the combination of the first gear 42 and the second gear 43 than by changing the drive sprockets 39a and 39b to be combined with the first sprocket 40. is there.

  Then, as shown in FIGS. 6 and 7, when the handle 5 is driven and the seedling transplanter 1 (machine base 2) is advanced, one open groove is formed in the field 7 by the opener 12. On the other hand, as the seedling transplanter 1 advances, the pair of drive wheels 3 rolls, so that the drive shaft 4 rotates about the axis. The rotational force of the drive shaft 4 is transmitted to the pair of drawing rollers 27 and 28 by the rotational force transmission mechanism 30. As a result, the right drawing roller 28 is driven to rotate about the axis in the clockwise direction in FIG. 4, and the left drawing roller 27 is driven to rotate about the axis in the counterclockwise direction in FIG. The continuous potted seedling 9 is pulled out from the seedling tray 10.

  When the continuous potted seedling 9 pulled out from the seedling tray 10 reaches between the pair of seedling guide plates 52, the bottom portion comes into contact with the feed roller 49 rotating at a peripheral speed faster than the pulling speed to the seedling inlet 50. In the process of passing over the feed roller 49 while being fed rearward, the adhesive portion between the pot body and the pot body of the continuous potted seedling 9 is peeled off, and the seedlings 15 are individually transferred from the continuous potted seedling 9. It is taken out. The removed seedling 15 is fed rearward by the feed roller 49 and received by the seedling pressing plate 53 as shown in FIG. The seedling 15 received by the seedling holding plate 53 falls toward the seedling inlet 50 and is guided toward the shooter 55 by the funnel 59. Then, the seedling 15 that has passed through the shooter 55 is planted in a planting groove formed in the farm field while maintaining a vertical posture.

  In addition, when the soil block seedling 15 immediately after being taken out from the continuous potted seedling 9 is in the shape of a lump, as shown in FIG. 9, by bringing a rotating feed roller 49 into contact with the bottom of the lump, The root connected to the seedling 15 immediately before protruding from the clot portion 15b (see FIG. 8) can be cut. Further, the thin film 21 that is pulled out by being combined by the pair of drawing rollers 27 and 28 is wound up by the winding roller 35. Further, the surrounding soil is scraped by the pair of cultivating plates 18 into the planting groove in which the seedlings 15 are planted.

The first embodiment has the following effects.
According to the first embodiment, depending on the required stock, by selecting the gear ratio (combination) between the drive sprockets 39a, 39b combined with the first sprocket 40 or the first gear 42 and the second gear 43, The strain between the seedlings 15 planted in the field 7 can be changed. Further, since no power source such as an engine or a motor is required, an inexpensive seedling transplanter 1 can be provided, which is suitable for introduction to a small-scale farmer. Furthermore, a lightweight and compact seedling transplanter 1 can be provided. For example, even a woman can easily handle the seedling transplanter 1.

In addition, 1st Embodiment is not limited above, For example, it can comprise as follows.
As shown in FIG. 10, the seedling transplanter 1 can be configured by combining a pair of pressure-reducing rollers 62 that suppress the soil scraped by the pair of cultivating plates 18.
Further, instead of the drive sprockets 39a, 39b (drive vehicle), the first sprocket 40 (driven vehicle), and the endless chain 41, respectively, a drive pulley (drive vehicle), a driven pulley (driven vehicle), a pulley belt, etc. Can be adopted. Further, instead of the drive sprockets 39a and 39b (drive vehicle), the first sprocket 40 (driven vehicle), and the endless chain 41, a continuously variable transmission that has been put into practical use may be used.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to the accompanying drawings.
In addition, about the structure which is the same as that of 1st Embodiment mentioned above, or equivalent, the same name and code | symbol are provided and detailed description is abbreviate | omitted.

  The seedling transplanting machine 1 of the first embodiment described above makes the soil block seedling 15 taken out from the continuous potted seedling 9 contact the bottom of the continuous potted seedling 9 drawn from the seedling tray 10 to the seedling inlet 50. A feed roller 49 (see FIG. 9) that feeds out is provided. In contrast, the seedling transplanter 71 of the second embodiment, as shown in FIG. 11 and FIG. 12, sandwiches the leaf portion 15 a and the soil clump portion 15 b of the soil block seedling 15, thereby providing a continuous potted seedling 9. It differs from the seedling transplanting machine 1 of 1st Embodiment by the point provided with the seedling conveying apparatus 72 which conveys the soil block seedling 15 taken out from the head toward the seedling inlet 50.

  As shown in FIG. 11, the seedling transport device 72 includes a pair of transport units 73 that are arranged symmetrically on the machine base 2. The transport unit 73 is a pair of coils wound up and down in two stages around a large-diameter driving pulley 74 disposed on the front side, a small-diameter driven pulley 75 disposed on the rear side, and the driving pulley 74 and the driven pulley 75. Endless belt 76. Further, the transport unit 73 includes a rotating shaft 77 that is arranged perpendicular to the machine base 2 and is supported by the machine base 2 so as to be rotatable around an axis, and a pulley 74 is fixed to an upper end portion thereof.

  The seedling transport device 72 includes a mechanism (not shown) that transmits the rotational force of the second transmission shaft 38 to one rotational shaft 77 (for example, the rotational shaft 77 of the left transport unit 73). A gear fixed to the lower end of one rotating shaft 77 and a gear fixed to the lower end of the other rotating shaft 77 are meshed with each other inside the machine base. It is possible to synchronize the rotation around the axis (the direction of rotation is reversed) and thus the peripheral speed of the pair of endless belts 76. The peripheral speed of the pair of endless belts 76 sandwiching the leaf portion 15a of the soil block seedling 15 and sending it backward toward the seedling inlet 50 is the continuous potted seedling 9 (thin film 21) by the pair of drawing rollers 27 and 28. It is set to the same speed as the drawer speed.

  The mechanism for transmitting the rotational force of the second transmission shaft 38 to one rotational shaft 77 has the same basic structure as the mechanism for transmitting the rotational force of the second transmission shaft 38 to the rotational shaft 28a of the right drawing roller 28. is there. The mechanism that synchronizes the rotation of the two rotation shafts 77 about the axis is the same as the mechanism that transmits the rotational force from the rotation shaft 28a of the right drawing roller 28 to the rotation shaft 27a of the left drawing roller 27. is there.

  As shown in FIG. 12, the seedling transport device 72 sandwiches the soil block portion 15 b of the soil block seedling 15 taken out from the continuous potted seedling 9 and feeds it backward toward the seedling inlet 50 ( A pair of rollers). Each sponge roller 78 is fixed to each rotation shaft 77 of each transport unit 73 so as to be disposed between the machine base 2 and the drive pulley 74. In addition, the circumferential speed of each sponge roller 78 is set to the same speed as the circumferential speed of the pair of endless belts 76 and, by extension, the drawing speed of the continuous potted seedling 9 (thin film 21) by the pair of drawing rollers 27 and 28.

  As shown in FIG. 11, on the machine base 2, the adhesive portions between the pot bodies of the continuous potted seedling 9 and the potted bodies are peeled and separated in the left-right direction and the seedling transporting device 72. In order to prevent the pair of transport units 73 from interfering with each other, in addition to the pair of peeling rollers 22 (see FIG. 4) of the first embodiment, two pairs of peeling rollers 22 (a total of six peeling rollers 22) are symmetrical. Placed in. Among these peeling rollers 22, the pair of peeling rollers 22 positioned at the forefront is configured to be moved forward in order to facilitate the operation of the thin film 21 at the time of setup.

Next, the operation of the second embodiment will be described.
When the continuous potted seedling 9 pulled out from the seedling tray 10 reaches between the pair of seedling guide plates 52, the bottom portion is fed backward while contacting the feed roller 49 rotating at a peripheral speed faster than the pulling speed, In the process of passing over the feed roller 49, the adhesive portion between the pots of the continuous potted seedlings 9 is peeled off, and the soil block seedlings 15 are individually taken out from the continuous potted seedlings 9. The taken out soil block seedling 15 is sent to the rear seedling conveying device 72 by the feed roller 49, and the leaf portion 15 a is sandwiched between the opposing belts 76 of the pair of conveying units 73 to the seedling inlet 50. It is conveyed toward the back.

  On the other hand, the soil block seedling 15 is moved backward toward the seedling inlet 50 by the soil block portion 15b being sandwiched between the pair of sponge rollers 78 at the same timing as the leaf portion 15a is sandwiched between the opposing belts 76. Sent out. Then, the soil block seedling 15 conveyed with the leaf portion 15 a sandwiched between the belts 76 is received by the seedling presser plate 53. The soil block seedling 15 received by the seedling holding plate 53 falls toward the seedling inlet 50 and is guided toward the shooter 55 by the funnel 59. And the soil block seedling 15 which passed the shooter 55 is planted in the planting groove formed in the agricultural field.

The second embodiment has the following effects.
The seedling transplanter 71 of the second embodiment has the same effects as the seedling transplanter 1 of the first embodiment described above.
Further, the seedling transplanter 71 of the second embodiment is sandwiched between the belts 76 where the leaf portions 15a of the soil block seedling 15 are opposed until immediately before the soil block seedling 15 is put into the seedling inlet 50. The soil block seedling 15 taken out from the seedling 9 can be conveyed to the seedling inlet 50 in a stable posture.
Furthermore, since the soil lump portion 15b is sandwiched between the pair of sponge rollers 78 at the same timing as the leaf portion 15a is sandwiched between the opposing belts 76, for example, the roots of the soil block seedlings 15 of adjacent pot bodies are Even when they are tangled, they can be peeled off, and the soil block seedlings 15 can be more reliably separated.

(Third embodiment)
A third embodiment of the present invention will be described with reference to the accompanying drawings.
In addition, about the structure which is the same as that of 2nd Embodiment mentioned above, or equivalent, the same name and code | symbol are provided and detailed description is abbreviate | omitted.

  In the seedling transport device 72 of the seedling transplanter 71 in the second embodiment described above, the soil block seedling 15 taken out from the continuous potted seedling 9 is sandwiched between the belts 76 whose leaf portions 15a are opposed to each other by the pair of transport units 73. The soil lump portion 15b is pinched by the pair of sponge rollers 78 at the same timing as the leaf portion 15a is sandwiched between the opposing belts 76 while being conveyed rearward toward the seedling inlet 50. It is sent out toward the back. On the other hand, in the seedling conveying device 82 of the seedling transplanter 81 in the third embodiment, the soil block seedling 15 taken out from the continuous potted seedling 9 is a pair of soil blocks as shown in FIGS. 13 and 14. It is sandwiched only by the transport roller 83 (a pair of rollers) and sent backward toward the seedling inlet 50.

  The pair of soil block transport rollers 83 in the seedling transport device 82 of the third embodiment corresponds to the pair of sponge rollers 78 in the seedling transport device 72 of the second embodiment, and each soil block transport roller 83 is Attached to the opposite rotating shaft 77. In the third embodiment, the rotational force of the second transmission shaft 38 is transmitted to the pair of rotating shafts 77 by the same mechanism as in the second embodiment. As a result, the pair of soil block transport rollers 83 can rotate in opposite directions of rotation around the axis. In the third embodiment, the peripheral speed of the pair of soil block transport rollers 83 is higher than the pulling speed of the continuous potted seedling 9 (thin film 21) by the pair of pulling rollers 27 and 28, for example, 2 of pulling speed. Set to ~ 3 times.

  Note that the peripheral speed of the pair of soil block conveying rollers 83 is, for example, the gears of a pair of gear pairs that are incorporated in a transmission mechanism that transmits the rotational force of the second transmission shaft 38 to the one rotation shaft 77 and meshes with each other. It can be set by selecting the ratio. Here, the peripheral speed of the pair of soil block transport rollers 83 can be adjusted by changing the outer diameter of the pair of soil block transport rollers 83. It is necessary to provide a mechanism for adjusting. Further, the pair of soil block transport rollers 83 can form the outer periphery, that is, the portion sandwiching the soil block portion 15b of the soil block seedling 15 with a sponge as in the second embodiment, but is not limited thereto. For example, it can also be formed of a synthetic resin having protrusions formed on the surface.

Next, the operation of the third embodiment will be described.
When the continuous potted seedling 9 pulled out from the seedling tray 10 reaches between the pair of seedling guide plates 52, the bottom portion is fed backward while contacting the feed roller 49 rotating at a peripheral speed faster than the pulling speed, In the process of passing over the feed roller 49, the bonded portion between the pot bodies of the continuous potted seedling 9 and the potted body (hereinafter referred to as the bonded portion of the thin film 21) is peeled off, and the soil block seedling 15 from the continuous potted seedling 9. Are retrieved individually. The taken out soil block seedling 15 is sent by the feed roller 49 toward the rear seedling conveying device 82, and the soil lump portion 15b is sandwiched between a pair of soil block conveying rollers 83 (a pair of rollers), and a pair of drawers is pulled out. The roller 27, 28 is fed backward toward the seedling inlet 50 at a conveyance speed higher than the drawing speed of the continuous potted seedling 9 (thin film 21).

  Here, in the third embodiment, the peripheral speed of the pair of soil block transport rollers 83 (the transport speed of the soil block seedling 15) is set to the pulling speed of the continuous potted seedling 9 (thin film 21) by the pair of pulling rollers 27 and 28. On the other hand, the soil block seedling 15 immediately after the bonded portion of the thin film 21 is peeled off is set in a state immediately before the bonded portion of the thin film 21 is peeled off by setting at a higher speed (2 to 3 times). It moves backward at a higher speed with respect to the seedling 15, in other words, the distance between the soil block seedlings 15 immediately before and after the bonding portion of the thin film 21 is peeled increases. Thereby, even when the roots protruding from the lump portion 15b of the soil block seedlings 15 of adjacent pot bodies are entangled, it is possible to peel them off and cut them. It can be separated more reliably.

  Then, the soil block seedling 15 fed rearward by the pair of soil block conveying rollers 83 is received by the seedling presser plate 53. The soil block seedling 15 received by the seedling holding plate 53 falls toward the seedling inlet 50 and is guided toward the shooter 55 by the funnel 59. And the soil block seedling 15 which passed the shooter 55 is planted in the planting groove formed in the agricultural field.

The third embodiment has the following effects.
The seedling transplanter 81 of the third embodiment has the same effects as those of the first and second embodiments described above.
Further, in the seedling transplanter 81 of the third embodiment, the peripheral speed of the pair of soil block transport rollers 83 in the seedling transport device 82, that is, the transport speed of the soil block seedlings 15 by the pair of soil block transport rollers 83 is set as a pair. Since the drawing speed of the continuous potted seedling 9 (thin film 21) by the drawing rollers 27 and 28 is set to a higher speed (2 to 3 times), the soil block seedling 15 immediately after the bonded portion of the thin film 21 is peeled off is set. Is moved rearward at a higher speed with respect to the soil block seedling 15 in the state immediately before the bonding portion of the thin film 21 is peeled, in other words, the soil block seedling immediately before the bonding portion of the thin film 21 is peeled off. The distance between 15 can be increased. Thereby, even if it is a case where the root which protruded from the clot part 15b of the soil block seedling 15 of an adjacent pot body is entangled, these can be peeled off and cut | disconnected. As a result, the soil block seedlings 15 can be more reliably separated, the planting posture of the soil block seedlings 15 after separation can be kept vertical, and planting accuracy can be improved.
As can be understood from FIGS. 11 and 13, the seedling conveying device 82 in the third embodiment includes a driving pulley 74, a driven pulley 75, and a pair of endless belts 76 of the seedling conveying device 72 in the second embodiment. Since it is not necessary, the structure can be simplified with respect to the seedling transport device 72 in the second embodiment. Furthermore, in the seedling conveying device 82 in the third embodiment, among the six peeling rollers 22 of the seedling conveying device 72 in the second embodiment, interference between the thin film 21 and the pair of endless belts 76 is avoided. Since the pair of peeling rollers 22 positioned at the rearmost position is not required, the structure can be further simplified with respect to the seedling conveying device 72 in the second embodiment, and the manufacturing cost can be reduced.

1 seedling transplanter, 2 units, 3 drive wheels, 4 drive shafts, 5 handles, 7 fields, 9 continuous potted seedlings, 12 openers, 15 seedlings (soil block seedlings), 20 thin film peeling devices, 21 thin films, 22 peeling rollers 27, 28 Pull-out roller, 30 Rotational force transmission mechanism, 35 Winding roller, 37 First transmission shaft, 39a, 39b Drive sprocket, 40 First sprocket, 41 Endless chain, 50 Seedling inlet

Claims (13)

By pulling the handle and moving the machine base forward, a planting groove is formed in the field by an opener provided on the grounding surface of the machine base, and in parallel, a continuous potted seedling is transferred from the seedling placement unit by the thin film peeling device. The soil block seedlings are individually taken out from the pots of the continuous potted seedlings by sequentially peeling the bonded portions of the continuous potted seedlings pulled out and the soil block seedlings are provided on the machine base. A seedling transplanting machine that is sequentially dropped into the seedling inlet and planted in the planting groove,
The thin film peeling apparatus is
At least a pair of peeling rollers for carrying the thin films separated by the peeling of the adhesive portion, at least a pair of drawing rollers for pulling out the thin films carried by the at least one pair of peeling rollers, and the pair of drawers A winding roller that winds up each thin film united by the roller,
The seedling transplanter
A drive wheel that is grounded to a farm and rolls as the machine base moves forward, a drive shaft that is fixed to the drive wheel and rotates about the axis as the drive wheel rolls, and the drive shaft A rotational force transmission mechanism that transmits the rotational force of the rotational force to the rotational shafts of the pair of drawing rollers,
The rotational force transmission mechanism is
A first transmission shaft that is disposed in a rotational force transmission path between the drive shaft and the pair of pull-out rollers and is rotatably supported around the shaft by the machine base; and a drive vehicle attached to the drive wheel; provided with a driven wheel attached to the first transmission shaft by changing the rotation ratio of the driven wheel and the drive wheel, characterized in that the strains of the seedlings are planted into the planting groove is changed Seedling transplanter. The drive vehicle is a drive sprocket attached to the drive shaft,
The driven vehicle is a first sprocket attached to the first transmission shaft,
The seedling transplanter according to claim 1, wherein the rotation ratio is a ratio of the number of teeth of the drive sprocket and the first sprocket around which an endless chain is wound. The rotational force transmission mechanism is
A second transmission shaft disposed in the rotational force transmission path between the first transmission shaft and the pair of drawing rollers and supported rotatably around the shaft by the machine base; and one end of the first transmission shaft A first rotating body that is detachably attached to the part, and a second rotating body that is detachably attached to one end of the second transmission shaft and is combined with the first rotating body. The seedling transplanting machine according to claim 1 or 2, wherein an interval between seedlings planted in the planting groove is changed by changing a rotation ratio between a body and the second rotating body. A feed roller is provided on the second transmission shaft and a part of the outer periphery is exposed on the upper surface of the machine base, and the feed roller contacts the bottom of the continuous potted seedling drawn from the seedling placement unit The seedling transplanter according to claim 3, wherein the soil block seedling is sent toward the seedling inlet. On the outer periphery of the feed roller, a plurality of convex portions for cutting the roots protruding from the soil block seed mass are formed, and the feed speed of the seedling by the feed roller is the pair of pairs. The seedling transplanting machine according to claim 4, wherein the seedling transplanting machine is set to a speed equal to or higher than a drawing speed of the continuous potted seedling by a drawing roller. The seedling transplanter according to claim 4 or 5, further comprising a pair of seedling guide members for maintaining a vertical planting posture of the soil block seedling fed toward the seedling inlet by the feed roller. 7. A seedling transporting device for transporting the soil block seedlings toward the seedling introduction port while holding the soil block seedling leaves or soil clumps and maintaining the planting posture of the soil block seedlings vertically. The seedling transplanter according to any one of the above. The seedling transporting device includes a pair of endless belts or a pair of rollers driven by the second transmission shaft, and the transport speed of the soil block seedlings by the pair of endless belts or the pair of rollers is set to the pair of endless belts. The seedling transplanter according to claim 7, wherein the seedling transplanting machine is set to a speed equal to or higher than a drawing speed of the continuous potted seedling by the drawing roller. The shooter is provided with a shooter that guides the seedling that has been attached to the machine base and dropped to the seedling inlet toward the planting groove, and the shooter has a caliber according to the seedling to be transplanted in order to keep the posture of the seedling vertical. The seedling transplanter according to any one of claims 1 to 8, characterized in that can be adjusted. A funnel that is attached to the machine base and guides the seedling falling to the seedling inlet to the shooter; and the funnel is disposed along the outer side of the seedling inlet on the drawer roller side. The seedling transplanting machine according to claim 9, wherein the seedling transplanting machine has a wall that can adjust the inclination angle of the sheet, and the diameter can be adjusted according to the seedling to be transplanted. The mounting position of the peeling roller can be adjusted so as to guide the soil block seedling to the seedling inlet according to a seedling that is attached to the machine base and transplanted. The seedling transplanter according to any one of the above. The width of the opener and the mounting position in the front-rear direction can be adjusted in order to keep the planting posture of the seedling to be transplanted by being mounted on the machine base, the opener being adjustable. The seedling transplanter described. The seedling transplanting machine according to any one of claims 1 to 12, further comprising a pair of cultivating plates whose widths can be adjusted according to the diameter or size of the seedling to be transplanted attached to the machine base. .

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