JPH0585214U - Seedling feeder for transplanter - Google Patents

Abstract

(57) [Summary] [Objective] To provide a stalk feeder for a transplanter that can smoothly feed a seedling to the next cutting portion without the involvement of a band-shaped seedling. [Structure] A pair of seedling transport belts 40, 41 for transporting the stem roots of the band-shaped seedlings are provided in pairs, and a pair of seedlings are provided above the pulley shafts 44, 45 at the transport end of the seedling transport belts 40, 41. Attach the star wheels 51,52 for tip feeding,
The opening / closing cutting device 53 is arranged on the downstream side of 2, and the uneven corner portion of the star wheel 51 located on the receiving blade 54 side of the opening / closing cutting device 53 is formed into an acute angle, and the star located on the cutting blade 55 side is formed. A seedling feeding device for a transplanter in which the uneven angles of the wheel 52 are formed in a curved shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a transplanter that is mounted on a traveling machine, transports a band-shaped seedling by a transport mechanism, cuts out each planted seedling one by one, and feeds it out, while planting it in a field scene by a planting claw of a planting device. The present invention relates to a seedling feeder.

[0002]

[Prior Art]

 The inventor of the present invention has developed a belt-shaped seedling in which the roots of plant seedlings such as rush are pinched from both sides with paper adhesive tape and the tape portion is wound with a thread from the outside at the end of transportation of each strip. It proposes a transplanter that has a transplanting part that is cut by a predetermined number of planted parts at each part and then sandwiched by a planting claw that carries out a planting motion and planted in a field scene (Japanese Patent Application No. 3-180340).

In such a transplanter, a transplant portion is mounted on a rear portion of a traveling body so as to be able to move up and down, a driver's seat facing the traveling direction of the traveling body is provided in the center of the body, and a driver sits there. The planting is carried out while riding and operating the traveling airframe while traveling in the field in the prescribed direction. A seedling box is supported on the seedling box support frame at the upper part of this transplanting section, and the first transport mechanism that holds the belt-shaped seedlings in the seedling box in a lying state and transports them downward for planting, and transports them downward. A second transport mechanism that transforms the strip-shaped seedlings into a standing shape and transfers them to the seedling feeding device side is provided. Furthermore, a planting guide is provided at the feeding end portion of the seedling feeding device to provide a planting rod. The planting nails are used to plant seedlings in the field, and in general, these transplanters are multi-row planting.

In the above-described first transfer mechanism, seedling transfer belts are provided in the lower part between the partition plates in which a plurality of strips are erected, and a predetermined gap corresponding to the thickness of the band-shaped seedlings transferred on the transfer surface of the belts is maintained. In addition, a seedling holding conveyor belt is provided, and the seedling holding conveyor belt can be vertically moved up and down with a drive shaft on the terminal end side of the seedling conveying as a fulcrum. Next, in the above-mentioned second transport mechanism, two horizontal pulleys that are parallel to each other at the start side of the seedling transport and hold the strip-shaped seedlings in a collapsed state while maintaining a predetermined gap, and the seedling transport end thereof. Seedling transfer belt for transporting belt-shaped seedlings, which is formed by stretching endless belts between two vertical pulleys standing in parallel on the left and right that transform the belt-shaped seedlings into the standing state on the side. Are arranged.

Further, the belt-shaped seedlings whose posture is changed from the lying posture to the standing posture by the second transport mechanism are seedlings made of a star wheel for feeding seedlings provided on each pulley shaft at the transport end portion of the seedling transport belt. The feeding device, the seedling support guide, and the cutting unit that divides the band-shaped seedlings into single-planted seedlings are sent to the seedling feeding device, and then the planted seedlings are planted by the planting claws. Is becoming

[0006]

[Problems to be solved by the invention]

 On the other hand, in order to improve the feeding of the band-shaped seedlings by the star wheel for feeding the seedlings of the above-mentioned seedling feeding device, it is better to make the uneven corners of the star wheel into an acute angle so that the sticking to the band-shaped seedlings is good. It is known to be good, but when cutting a prescribed number of planted seedlings with an opening and closing device consisting of a receiving blade and a cutting blade that opens and closes a strip-shaped seedling downstream of a pair of seedling feeding star wheels, The phenomenon that seedlings were caught in the star wheel facing the cutting blade side occurred.

When the seedlings are rolled up in the seedling feeding device including the star wheel in this way, seedlings are clogged and the seedlings are not fed correctly to the cutting portion arranged in the next step, and as a result, However, there is a problem that it becomes difficult to cut a predetermined number of seedlings, and thus planting of seedlings cannot be performed smoothly. According to the present invention, two seedling feeding star wheels provided on each pulley shaft at the conveying end portions of the two seedling conveying belts that transform the belt-shaped seedlings into a standing state and convey the seedlings. The purpose of the present invention is to provide a seedling feeder of a transplanter that can smoothly feed seedlings to the next cutting part.

The inventors of the present invention have conducted various experiments and studies with an actual machine in order to clarify the problem of the entrainment phenomenon of the band-shaped seedlings, and as a result, the cutting blade of the opening / closing cutting device has an opening / closing motion with the receiving blade. Therefore, when the band-shaped seedlings are cut into a prescribed number of planted seedlings and then returned, the cutting tip of the subsequent band-shaped seedlings tends to be brought back to bring the tip side of the seedling closer to the star wheel located on the cutting blade side. As a result, it was found that if the uneven corners of the star wheel on the cutting blade side remained sharp, the engagement with the seedlings was too strong and the seedlings were rolled up. Therefore, of the pair of seedling advance star wheels, by forming the uneven corners of the star wheel located on the cutting blade side of the opening / closing cutting device in a curved shape, the seedlings are not caught and the smooth seedlings are not formed. The present invention has been reached after confirming that the feeding work can be performed.

[0009]

[Means for Solving the Problems]

 The seedling feeder of the transplanter according to the present invention for achieving the above-mentioned purpose conveys the band-shaped seedlings along the upper surface of the seedling mounting table, and opens and closes at the lower end of the seedling mounting table. In a planting machine configured to cut a predetermined number of planted seedlings by a cutting device and then planting the planted seedlings in a field with a planting claw provided at the tip of the planting rod, A pair of seedling transporting belts for transporting the roots of the seedlings are provided in opposition, and a pair of seedling stalk forward star wheels are mounted above the pulley shafts at the transporting end of the seedling transporting belt and downstream of the star wheel. The opening / closing cutting device is arranged on the side, and one of the pair of seedling advance star wheels positioned on the blade receiving side of the opening / closing cutting device has an uneven corner portion formed into an acute angle. , The other star located on the cutting blade side of the opening / closing cutting device It is constructed by forming irregularities angle of a wheel in a curve.

[0010]

[Work]

 The strip-shaped seedlings were conveyed up to the terminal end of the seedlings while sandwiching the roots of the seedlings between the two seedling conveyor belts, and the star-shaped seedling feeder has a pair of star wheels with curved uneven corners. While the tip of the stalk is held by the wheel, the uneven corners are satisfactorily delivered by the star wheel with an acute angle.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view of a transplanter according to an embodiment of the present invention, FIG. 2 is an enlarged side view of the transplanter of FIG. 1, and FIG. 2 is a perspective view of the belt-shaped seedling transport mechanism as seen from the back side, FIG. 4 is a perspective view of a main portion of the transport end portion of the second transport mechanism of FIG. 3, and FIG. 5 is a plan view of the portion of FIG.

First, FIGS. 1 and 2 show the entire structure of a transplanter, in which 1 is a traveling machine body having a drive wheel and a steering wheel, and a transplanting section 2 for multi-row planting is lifted up and down at the rear part thereof. It is mounted so that it can be moved up and down by the link 1a, and at the front part of the traveling body 1, a spare seedling support frame 5 that supports a seedling box 4 that stores the belt-shaped seedlings in a zigzag shape is equipped. At the center, a driver's seat 6 facing the traveling direction F of the machine is provided as shown in each drawing.

Further, a first transfer mechanism 10 for holding the strip-shaped seedlings of the seedling box 4 supported by the seedling box support frame 9 of the transplanting section 2 in a lying state and transporting them downward along the seedling mounting table 2a, and The second transfer mechanism 30 for transforming the strip-shaped seedlings transferred from the stand to the standing shape and transferring the strip-shaped seedlings to the seedling feeding device 11 is provided for each row, and the feeding terminal end portion of each seedling feeding device 11 described above is provided. Is provided with a planting guide 13 formed in an arc shape according to the planting operation, and the seedlings captured by the planting claws 16 of the planting rod 15 rotatably supported by the drive case 14 are provided. It is designed to be planted in the field.

The details of the transplantation part of the present invention have been already proposed in Japanese Patent Application No. 3-180340, Japanese Patent Application No. 3-56 680, Japanese Patent Application No. 3-69034, etc. Structures and explanations of parts not described in the above shall refer to the specification and drawings of these applications. In the first transfer mechanism 10, as shown in FIG. 3, an endless seedling transfer belt 17 is provided in the lower part between the partition plates 12, and the seedling transfer belt 17 holds the thickness of the band-shaped seedlings in the upper part thereof. A seedling pressing conveyor belt 18 is provided, and the seedling pressing conveyor belt 18 is provided so as to be vertically movable with respect to the seedling placing table 2a with a drive shaft 19 as a fulcrum, as indicated by an arrow X in the figure.

Next, the second transport mechanism 30 holds the strip-shaped seedlings at a predetermined gap, that is, while keeping the thickness of the strip-shaped seedlings and holding the strip-shaped seedlings in the lying state at the seedling transport start end side. 2 pulleys 31 and 32, and at the end of the seedling transport, they are orthogonal to the seedling mounting table 2a so as to change the posture of the strip-shaped seedling from the lying posture to the standing posture as shown in FIGS. The seedling transfer belts 40 and 41, which are endless belts, are provided between the two pulleys 33 and 34 which are erected parallel to each other.

As shown in FIGS. 4 and 5, the belt-like seedlings are sandwiched by these two seedling transport belts 40 and 41 to change the posture from the lying posture to the standing posture. A tension roller 42 for applying tension to the 40 is provided, and a similar tension roller 43 is provided to the seedling conveying belt 41. The tension roller 42 is provided before the tension roller 43. Further, star wheels 51, 52 for feeding seedlings are provided at intervals on the shafts 44, 45 of the pulleys 33, 34 at the transporting end portions of the seedling transporting belts 40, 41, and both shafts are provided. A gear 46a is provided so that 44 and 45 rotate in synchronization.

The band-shaped seedlings are transported by the first transport mechanism 10 in a lying posture, transferred to the second transport mechanism 30, and sandwiched between the seedling transport belts 40 and 41 forming the second transport mechanism 30. It is transported while changing its posture from the lying posture to the standing posture. The root guide 46 guides the root to the end of conveyance, and a lower guide 47 that is made of a spring material and can be opened, and a central guide 48 that has a V-shaped seedling reservoir formed in the center of the rod-shaped body. And is guided by an openable upper guide 49 composed of a spring material.

The opening / closing device 53, which is located on the downstream side of the star wheels 51 and 52 and has a cutting blade 55 and a receiving blade 54 that opens and closes in a direction orthogonal to the outlet of the root guide 46, causes a predetermined movement. Cut into a number of seedlings. At this time, the cut seedlings that are sandwiched by the guides 47, 48, 49 in the upper and lower stages and temporarily stopped at the outlet of the root guide 46a are captured by the planting claws 16 and planted in the field. Of.

In the present invention, star wheels 51, 52 for feeding the seedling tips of the band-shaped seedlings having different blade tips are used. That is, the uneven corner portion of the star wheel 51 provided on the shaft 45 of the pulley 33 on the side closer to the receiving blade 54 of the opening / closing cutting device 53 is formed into an acute angle, and the pulley 34 on the side closer to the cutting blade 55 on the opposite side is formed. The uneven corners of the star wheel 52 provided on the shaft 44 are formed in a curved shape.

As described above, the seedling tips above the seedling roots of the band-shaped seedlings transported by the seedling transporting belts 40 and 41 of the second transport mechanism 30 are two different shapes provided at the delivery end. It is sent between the above-mentioned upper guides 49 by the star wheels 51 and 52 of the above, and the root of the seedling is cut by the forward movement of the cutting blade 55 of the opening / closing cutting device 53, but the tip of the seedling is clamped by the upper guide 49. Even in this state, there is a tendency that the leading edge of the subsequent band-shaped seedling is often brought back when the cutting blade 55 moves backward after cutting.

Therefore, the uneven corners of the star wheel 52 on the side of the cutting blade 55 are formed in a curved shape, and the stalk tip side of the band-shaped seedling recoils too much and is too close to the star wheel 52 to deeply engage with the seedling. Even in an excessive state, the seedlings can be sent out to the tip side of the upper guide 49 well without being caught in the belt-shaped seedlings. In addition, since the uneven corners of the star wheel 51 located on the side of the cutting blade 54 are formed in an acute angle, it is possible to feed the seedlings well even if the engagement with the seedlings becomes light and shallow. Therefore, the seedlings are sandwiched between these two star wheels 51 and 52, accurately and smoothly transferred, supported by the seedling support guides 47, 48 and 49, and transplanted one by one by the cutting device 53. It will be.

[0022]

[Effect of the device]

 According to the seedling feeding device of the transplanter according to the present invention, the band-shaped seedlings are conveyed along the upper surface of the seedling mounting table, and a predetermined number of the seedlings are transferred by the opening / closing device provided at the lower end of the seedling mounting table. After cutting into planted seedlings, a planting machine configured to plant the planted seedlings in a field by a planting claw provided at the tip of the planting rod conveys the roots of the striped seedlings. A pair of star wheel for feeding the seedlings is attached to the upper part of each pulley shaft at the end of conveyance of the seedling conveying belt, and the opening / closing cutting device is provided on the downstream side of the starwheel. Of the pair of star wheel for forward feeding of the seedlings, one of the star wheels located on the receiving blade side of the opening / closing cutting device is formed into an acute-angled corner portion, and the opening / closing cutting device of Set the uneven angle of the other star wheel located on the cutting blade side. It is constructed by forming a line shape.

Therefore, the belt-shaped seedlings that are conveyed while being sandwiched in the standing state can be fed into the seedling support guide and cutting device in an accurate standing state, and the seedlings are not rolled up during the feeding, so that the seedlings are smooth and accurate. The effect is that it can be planted. In particular, in the present invention, since the uneven corners of one star wheel in the pair of star wheels are formed in a curved shape, the seedlings are not caught when the band-shaped seedlings are fed, and the seedlings are separated easily. Since the seedlings can be fed smoothly, there is an advantage that the planting performance of the transplanter is improved.

[Brief description of drawings]

FIG. 1 is an overall side view of a transplanter according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of the transplantation period of FIG.

FIG. 3 is a perspective view of a belt-shaped seedling transport mechanism.

FIG. 4 is an enlarged perspective view of a terminal portion of the transport mechanism shown in FIG.

5 is an enlarged plan view of a terminal portion of the transport mechanism of FIG.

[Explanation of symbols]

10 First transport mechanism 11 Seedling feeding device 13 Planting guide 17 Seedling transport belt 18 Seedling holding transport belt 30 Second transport mechanism 31,32,33,34 Pulley 40,41
Seedling conveyor belt 42,43 Tension roller 46a Gear 46 Root guide 47 Lower guide 48 Center guide 49 Upper guide 51,52 Star wheel 54 Receiving blade 55 Cutting blade
53 Switchgear

Claims (1)

[Scope of utility model registration request] 1. A belt-shaped seedling is transported along an upper surface of a seedling placing table, cut into a predetermined number of planted seedlings by an opening / closing device provided at a lower end portion of the seedling placing table, and then the planted seedling is cut. In a planting machine configured to plant an attached seedling in a field with a planting claw provided at the tip of a planting rod, a pair of seedling conveying belts for conveying the roots of the strip-shaped seedlings are provided oppositely, A pair of star wheel for feeding the seedlings is attached to the upper portion of each pulley shaft at the transporting end portion of the transporting belt, and the opening / closing cutting device is arranged on the downstream side of the star wheel, and the pair of seedlings is provided. Among the star wheels for advance feed, the uneven portion of one star wheel located on the receiving blade side of the opening / closing cutting device is formed into an acute angle, and the unevenness of the other star wheel located on the cutting blade side of the opening / closing cutting device. Seedling transfer of transplanter with curved corners Apparatus.