JPH056967B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an onion foliage cutting device, and mainly relates to an onion foliage cutting device that cuts the onion foliage by trimming it downward, which has been dug up by an onion harvester.

(Conventional technology) Conventionally, this type of onion stem and leaf cutting device was
For example, a pair of conveyance rollers each having an elastic conveyance protrusion spirally wound around the outer periphery of the shaft are mounted parallel to each other so as to be rotatable inwardly, and the onions are Provided are circular receivers that are rotated inwardly from each other with a gap between them for guiding the stems and leaves, and a cutter is provided at the bottom of one of the circular receivers that rotates in pressure contact with the circumferential surface of the other circular receiver; A structure has been proposed in which the cutter is biased by a spring so as to be in constant pressure contact with the circumferential surface of the other circular receiving plate.

Furthermore, as described in Japanese Utility Model Application Publication No. 61-80615, a pair of drive shafts are rotatably arranged in parallel at the discharge ends of a pair of conveyor rollers, and a pair of cutters are attached to the pair of drive shafts. A structure in which the opposing blade portions are fixed in a vertically overlapping state is also known.

(Problems to be Solved by the Invention) In the above configuration, a gap is formed between the circular receiving plates that are rotated inwardly to guide the onion stems and leaves. Since the stems and leaves are not supported, the cutting of the stems and leaves by the cutter is unstable and lacks reliability, and the cut lengths are uneven.Also, if the onion stems and leaves are fed into the cutter in an inclined state, the stems and leaves will be cut off by the cutter. The cutter is cut diagonally as it is, resulting in uneven cutting lengths.Furthermore, the delivery of the onion by the circular receiver is uncertain and the onions may stagnate.Furthermore, the driven shaft is set so that the cutter is always in pressure contact with the circular receiver. Since the force is applied by a spring, there is a risk that the blade of the cutter may break or be damaged depending on the applied force, and there is also the problem that the structure becomes complicated.

In addition, in the configuration described in the above publication, the pair of cutters are fixed to their respective drive shafts with the opposing blade parts overlapping vertically, so the blade parts overlapping the upper and lower sides of the pair of cutters wear out. If there is a gap between the blade parts due to such reasons, the cutting of the stems and leaves tends to be uncertain, especially when the stems and leaves are withered and have little moisture, or when the stems and leaves have a lot of water and are damp. The problem is that it is often not possible to cut the leaves accurately, and furthermore, when cutting the leaves with this pair of cutters, there is no structure to support the cut portion of the leaves, making the cutting of the leaves unstable and lacking in certainty. There is.

Therefore, the present invention has been made in view of the above points, and when cutting onion stems and leaves, it is possible to reliably hold and cut the cut part of the stems and leaves, and for this reason, the stems and leaves can be stably cut with a pair of cutters. It cuts well and reliably, the length of the cut is not uneven, and there is no gap between the upper and lower blades of this pair of cutters, and the upper and lower blades are constantly cut. It can be rotated in sliding contact, so there is no uncertainty in cutting the stems and leaves due to the dryness of the stems and leaves.Furthermore, the onion with the stems and leaves cut off is reliably fed out, and the onion does not stagnate. It is an object of the present invention to provide an onion stem and leaf cutting device that can prevent breakage and damage to the onion.

(Means for Solving the Problems) The onion foliage cutting device of the present invention is configured to transport onions with shafts facing inwardly in opposite directions and arranged side by side so as to be rotatable, and to hold the onion foliage in a downward position. at least a pair of conveyance rollers that arrange and convey out the conveyance rollers; a pair of onion supports that support and convey the onions carried out from the pair of conveyance rollers, and sandwich the stems and leaves of the onion between opposing inner sides of the respective outer peripheries; A pair of cutters are provided at the lower portions and cut the pinched foliage. are respectively fixed to vertical drive shafts that are arranged in parallel so as to be rotatable inwardly in opposite directions and located on the outer side of the discharge ends of the pair of conveyance rollers with their inner sides in contact with each other; The pair of cutters are formed into a disc shape with a smaller diameter than the pair of onion supports, and are in a state in which the blades on the opposing inner sides of the respective outer peripheries that cut the stems and leaves are vertically overlapped and rotate in sliding contact. and is located at the lower part of the pair of onion supports and is attached to the pair of drive shafts so as to be slidable only in the axial direction, and has one cutter located at the lower side of the pair of cutters. The one drive shaft is provided with a spring that constantly biases one cutter against the other cutter.

(Function) In the onion foliage cutting device of the present invention, the pair of conveyance rollers are rotated inwardly in opposite directions, and when the onion is carried onto the pair of conveyance rollers, the onion is The onion stems and leaves are moved between the conveyance rollers and conveyed in the axial direction, and are guided downward between the pair of conveyance rollers and conveyed, so that the onion stems and leaves are introduced between the pair of conveyance rollers. The paper is then adjusted so that it hangs downward, and is carried out from the carrying-out ends of the pair of carrying rollers.

Then, this onion is carried between the upper surfaces of a pair of onion supports rotating inwardly in opposite directions, and the stems and leaves of this onion are carried between the opposing inner sides of the outer periphery of the pair of onion supports. The onion is sandwiched between the onion supports and moved in the conveying direction by the rotation of the pair of onion supports, while the stems and leaves are fed between the opposing upper and lower blades on the outer periphery of the pair of cutters while being sandwiched. The onion is then cut from a predetermined position between the upper and lower blades that rotate in sliding contact with each other, and the onion is smoothly carried out.

In this case, one cutter that is attached to one drive shaft so that it can slide only in the axial direction is attached to the other drive shaft so that it can slide only in the axial direction using a spring provided on one drive shaft. Since the other cutter is always energized, the inner blade of one cutter is constantly rotated in sliding contact with the inner blade of the other cutter, and the gap between the upper and lower blades is ni〓
There is no gap between the blades, and the cutting portions are held in place, so that the leaves are reliably cut between the upper and lower blade portions.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In the figure, 1 is the machine frame of an onion harvesting machine, and the front part of this machine frame 1 has a running wheel 2, a digging body 3, a first
A conveyor 4 and a second conveyor 5 which slopes upward after the insertion portion faces the discharge end of the first conveyor 4 are rotatably provided. Further, on the machine frame 1, an onion conveying device 6 and an engine 7 are provided.
At the bottom of the machine frame 1, a freely movable endless track belt 9 is provided which is driven by the output from the engine 7 via an interlocking medium 8. Further, a chute body 10 is provided between the delivery end of the second conveyor 5 and the delivery part of the onion conveying device 6. Further, the first conveyor 4 and the second conveyor 5 are connected to the engine 7 via interlocking media 11 and 12, respectively.
They are interlocked and connected so that they are circulated by the output from.

The onion conveying device 6 is provided with a pair of side frames 13 facing each other at the upper part of the left and right sides of the machine frame 1, and between the pair of side frames 13, the stems and leaves of onion a are placed between the pair of side frames 13. A plurality of groups of conveying rollers 16, each consisting of a pair of conveying rollers 15 arranged in parallel with a predetermined interval 14, are rotatably mounted on shafts. In addition, the pair of conveyance rollers 15 in each set are respectively connected to the stems and leaves b of onion a.
are rotatably mounted inwardly in opposite directions so as to be introduced between the pair of conveyance rollers 15, and the plurality of conveyance roller groups 16 including this pair are interlocked with the engine 7. The medium 17 and the transmission 18 are interlocked to rotate.

Also, a pair of conveyance rollers 15 in each set
has an elastic conveyance ridge 21 in the form of a narrow long plate made of an elastic member such as a canvas-filled rubber plate, which is helically locked at a predetermined pitch on the outer periphery in the length direction,
This elastic conveyance protrusion 21 has a large number of elastic protrusions 20, 20n arranged at a predetermined interval in the length direction on a portion near the rear edge on the opposite side to the feed surface portion 22 on the front edge side in the width direction.
is formed. Then, this elastic conveyance protrusion 2
The pitch between the spirals consisting of 1 is formed of a pitch capable of transporting the onion a.

Further, the pair of conveyance rollers 15 are formed of synthetic resin into a hollow cylindrical shape, and rotating shafts 24, 24 are inserted into the hollow portion 23, and the two end portions of each conveyance roller 15 have face plates. 25
Both ends of this rotating shaft 24 are rotatably mounted on a bearing body 26, and one end of each rotating shaft 24 is connected to each other in opposite directions via an interlocking medium. It is interlocked and connected so that it can be rotated inwardly. One end of the rotating shaft 24 on one side is interlockingly connected to the engine 7 via the interlocking medium 17 and the transmission 18.

Next, a pair of conveyance rollers 1 in each set
A foliage cutting device 27 that rotates inwardly in opposite directions is provided at each of the delivery ends of the onions 5 to cut the foliage b of the onion a. A transverse conveyor 28 for conveying the removed onions a is provided, and a container 29 for storing the onions a is provided at the discharge end of the transverse conveyor 28.

The stem and leaf cutting device 27 is configured to
A connecting frame 31 is integrally attached in the left-right direction to a support frame 30 provided between the parts near the rear end, and in the left-right direction of the connecting frame 31, the unloading ends of the pair of conveyance rollers 15 in each set are The support frame 32 for the lower part is attached to the mounting plate 3 of the lower part.
A large number of support pieces 3, each consisting of a pair, are fixed to each other at the support frame 32 and protrude from the upper inner side of the support frame 32.
4 protrudes into the discharge end portions of the pair of conveyor rollers 15 in each set, and the bearing bodies 26 are fixed on the upper support pieces 34, respectively.

Further, a pair of conveyance rollers 15 in each set are provided on the inner side of the mounting plate 33 of the support frame 32.
A large number of mission cases 35 corresponding to the lower part of the unloading end are fixed respectively, and a pair of mission cases 35 are inserted into each mission case 35 through an upper bearing 38 from an insertion hole 37 in a horizontal plate part 36 of the support frame 32. The lower portions of a pair of drive shafts 39 are rotatably inserted therethrough, and the lower ends of each drive shaft 39 are rotatably supported by a lower bearing 40.
Further, a spline shaft portion 42 having a spline 41 in the axial direction is formed at the upper end portion of the drive shaft 39 in each set.
Each of the cutters 43 has a pair of disc-shaped cutters 43, and the center portions of a pair of onion supports 44 are removably inserted into and removably spline-fitted to the upper parts of the pair of cutters 43 through insertion holes 45 formed of spline holes. Nuts 46 are removably fastened to threaded portions formed at the upper end of the spline shaft portion 42, respectively.

The pair of onion supports 44 in each set have a disk body 47 spline-fitted to the spline shaft portion 42, and a disk-shaped clamp made of a soft elastic member such as rubber is attached to the outer periphery of the disk body 47. A ring 48 is integrally fitted. The clamping rings 48 of the pair of onion supports 44 are pressed and rotated at the opposing inner sides of the outer circumference, and
The inner press-contact portion 49 presses against each other while rotating.
are rotated while slightly elastically deforming each other in the radial direction. Therefore, the pair of onion supports 44 do not rotate in pressure contact with each other on the radius on the side of the pressure contact part 49 of the inner part that rotates in pressure contact with each other. The radius is smaller than the radius on the outer side by the amount of elastic deformation, so that it can be rotated under pressure. The raw edges of the stems and leaves b of the onion a are held between the pressing parts 49 of the pair of onion supports 44, and the onion a is supported between the upper surfaces of the holding rings 48. It is designed to be transported by hand.

Further, the pair of cutters 43 spline-fitted to the spline shaft portion 42 are formed in the shape of a disk with a diameter slightly smaller than the diameter of the pair of onion supports 44, and have blade portions formed on the outer periphery thereof. 50 are vertically overlapped at opposing inner sides so that they can be rotated in sliding contact. Further, among the vertically stacked cutters 43, one drive shaft 39 having the cutter 43 located at the lower side is wound with a coil spring 51. The cutter 43 is always energized with respect to the cutter 43 on the upper side, and the blade portions 50 of the cutter 43 are rotated in sliding contact with each other at all times.

Next, inside the pair of transmission cases 35 in each set, the inner end portions of input shafts 52, which are rotatably supported horizontally on the mounting plates 33 of the connection frame 31 and the support frame 32, protrude. The inner end portion of the input shaft 52 and the lower portions of the pair of drive shafts 39 are rotatably coupled via a gear mechanism 53 which is attached at vertically shifted positions. Further, the outer ends of the input shafts 52 in each set are rotatably connected via a pulley 54 and a belt 55, and the input shaft 52 at the outer end is further connected to a pulley 56, a belt 57, and an interlocking shaft 58. It is operatively connected to the transmission 18 through the transmission line.
Further, the interlocking shaft 58 and the lateral feed conveyor 28
It is connected to a drive shaft 59 via a universal joint 60. The pair of onion supports 44 in each set are connected to the respective drive shafts 3.
At 9, they are rotated inwardly in opposite directions.

Next, the operation of the above configuration will be explained.

The engine 7 is driven to advance the machine, and the output from the engine 7 causes the first conveyor 4 and the second conveyor 5 to rotate clockwise in FIG. A pair of conveyance rollers 15, a pair of onion supports 44, and a cutter 43 in each set of 6 conveyance roller groups 16
are rotated inwardly in opposite directions, and the traverse conveyor 28 is rotated toward the side.

Then, the onions a in the field are sequentially dug up by the digging body 3, or the cut-off onions a are scooped up one after another, and the onions a are transferred from the digging body 3 to the first and second conveyors 4. , 5, and these first and second conveyors 4, 5.
The soil is conveyed while being shaken off, and is further conveyed from the discharge end of the second conveyor 5 via the chute body 10 to the conveyance roller group 16 of the onion conveyance device 6. Further, each onion a carried into this conveyance roller group 16 is distributed to each pair of conveyance rollers 15 in each set, which are rotated inwardly in opposite directions, and The onions a on the onions 15 are moved between the pair of conveyance rollers 15 on the feed surface portion 22 of each elastic conveyance ridge 21 and conveyed in the conveyance direction, and the stems and leaves b of each onion a are A large number of elastic protrusions 20 protruding from the conveying protrusion 21,
At 20n, the near part of the onion a is brought into contact with the raw material, and the onion a is introduced downward from the gap 14 between the pair of conveyance rollers 15 and conveyed. Therefore, the stems and leaves b of the onion a are placed in a downward hanging state. are arranged and conveyed to the discharge end of a pair of conveyance rollers 15.

Furthermore, the onions a on the pair of conveying rollers 15 in each set are carried from their discharging ends into the space between the pair of onion supports 44, and the stems and leaves b of each onion a are placed near the point of birth. The portion is the outer periphery of the pair of onion supports 44, that is, the respective clamping rings 4.
The onion a is held in a downwardly hanging state between the pressure contact parts 49 on the inside of the onion a, and by the rotation of the pair of onion supports 44, the onion a is conveyed in the unloading direction, and the stems and leaves b of the onion a are is supplied between the upper and lower blade portions 50 of the pair of cutters 43 while being held between the pressure contact portions 49, and the upper and lower blade portions 50
While being cut off from a predetermined position and removed,
The onion a is carried into the lateral conveyor 28 by the rotation of the pair of onion supports 44, and is conveyed and stored in the container 29.

In this case, the pair of onion supports 44 have a clamping ring 48 made of an elastic member on the outer periphery, and a pressure-contacting part 49 on the opposing inner side of the clamping ring 48 rotates.
Since the stems and leaves b of the onion a are held between them, the stems and leaves b of the onion a are reliably held in a downwardly hanging state, and the onion a is also held in position, so that the pair of cutters 43 can cut and remove the stems and leaves b. This is carried out reliably at a predetermined position, and the onions a are reliably conveyed toward the traverse conveyor 28.

The pair of cutters 43 are each formed to have a smaller diameter than the pair of onion supports 44, so that after the stems and leaves b are held between the pair of onion supports 44, the stems and leaves b are cut by the pair of cutters 43. Therefore, cutting of the stems and leaves b can be performed accurately and reliably.

Further, since one cutter 43 located at the lower side is always urged by the coil spring 51 toward the other cutter 43 located at the upper side, the upper and lower blades facing each other are 5
0 is constantly rotated in sliding contact, and there is no gap between the upper and lower blade parts 50, and therefore,
Cutting and removal of the stems and leaves b is reliably performed between the upper and lower blade parts 50.

Next, in the embodiment described above, the pair of cutters 43 are formed in a flat plate shape, but the invention is not limited to this, and for example, as shown in FIGS.
As shown in the figure, a disc cutter 62 having a corrugated blade portion 61 may be arranged and rotated.

Further, in the above embodiment, the case where the upper surface portions of the pair of onion supports 44 that support the onions a are formed horizontally is explained, but the present invention is not limited to this, and for example, as shown in FIG. The upper surface portion may be formed with an inclined surface portion 63 that gradually slopes downwardly toward the peripheral edge. In this case, the cutting length of the stems and leaves b can be shortened by forming the lower surface portion thinly or flatly.

Further, the inclined surface portion 63 and the horizontal upper surface of the above embodiment may be formed by a corrugated upper surface 65 formed by repeatedly forming uneven portions 64 as shown in FIG. A large number of protrusions 66 may be provided protruding from each upper surface. With these, onion a can be transported even more reliably. In addition, a pair of onion supports 44
The clamping ring 48 may be formed hollow or solid as long as it is elastically deformable.

〔Effect of the invention〕

According to the present invention, a pair of onion supports that hold onion stems and leaves are fixed to a pair of vertical drive shafts that face inwards in opposite directions and are rotatably arranged side by side. A pair of cutters for cutting onion stems and leaves, which are located at the lower part of the body and are formed into a disk shape with a smaller diameter than the onion support, are attached to the pair of drive shafts, and the opposing inner blade portions of the cutters are slid in the vertical direction. Since it is attached in a tangentially rotating state, when cutting the onion stems and leaves, the cut part of the stems and leaves can be securely held between the opposing inner parts of the pair of onion supports and cut with the pair of cutters. Therefore, the pair of cutters can stably and reliably cut the stems and leaves, and the cut lengths can also be cut in an orderly manner without becoming irregular.

In addition, the pair of cutters are attached so as to be slidable only in the axial direction with the blade portions on the opposing inner sides thereof slidingly touching and rotating in the vertical direction, and having one cutter located on the lower side thereof. Since a spring is installed on the drive shaft of the cutter to constantly bias one cutter against the other, there is no gap between the upper and lower blades of the pair of cutters, and the blades are This prevents the blades from separating even when the blades wear out, allowing the upper and lower blades to constantly rotate in sliding contact with each other, which prevents cutting of leaves from becoming uncertain due to the dryness of the leaves. It can definitely be prevented.

Further, since the pair of onion supports are formed in a disk shape and are rotatably mounted on shafts facing inward in opposite directions, the onion that is carried out from the pair of conveying rollers is placed on the pair of onion supports. In addition to being able to reliably support the onions with their stems and leaves cut, it is also possible to reliably send out the onions with their stems and leaves cut off, and prevent the onions from stagnation. Compared to a configuration in which a pair of flat belts are arranged side by side so as to be freely rotatable while facing left and right, it can contribute to miniaturization, and the configuration is simple with a small number of parts.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view of a part of the onion stem and leaf cutting device, Fig. 2 is a sectional view taken along line A to A of the same as above, and Fig. 3 is the same as Fig. 1. 4 is a sectional view of the section taken from line C to C in FIG. 1, FIG. FIG. 7 is a plan view of a cutter showing an embodiment, FIG. 7 is a side view of the same as above, FIG. 8 is a sectional view of a stem and leaf cutting device showing another embodiment, and FIGS. 9 and 10 are onion supports showing other embodiments. It is a top view of a body. 14... Interval, 15... Conveyance roller, 39... Drive shaft, 43... Cutter, 44... Onion support, 50...
Blade part, 51... Spring, a... Onion, b... Stem and leaf.

Claims (1)

[Scope of Claims] 1. At least a pair of conveying rollers facing inwardly in opposite directions and rotatably installed in parallel shafts to convey the onion and conveying the onion stems and leaves facing downward; Located on the outer side of the delivery ends of the pair of transport rollers, they are rotatably arranged in parallel in opposite directions to each other, and support the onions delivered from the pair of transport rollers between the upper surfaces of each roller. A pair of onion supports sandwiching onion stems and leaves between opposing inner parts of the respective outer peripheries, and a pair of onion supports provided at the lower part of the pair of onion supports cut the pinched stems and leaves. a pair of cutters, the pair of onion supports are each formed in a disk shape, and the pair of conveyance rollers are held in contact with the opposing inner sides of the respective outer peripheries that sandwich the stems and leaves. The pair of cutters are respectively fixed to vertical drive shafts that are arranged in parallel so as to be rotatable inwardly in opposite directions and located on the outer side of the delivery end, and the pair of cutters are connected to each other from the pair of onion supports. It is formed into a small-diameter disk shape, and is positioned at the lower part of the pair of onion supports in such a state that the blades on the opposing inner sides of the respective outer peripheries for cutting the stems and leaves overlap vertically and slide and rotate. The pair of cutters is attached to the pair of drive shafts so as to be slidable only in the axial direction, and the one cutter is attached to the drive shaft with one cutter located at the lower side of the pair of cutters. This onion stem and leaf cutting device is characterized by being equipped with a spring that constantly applies force to the cutter.