JP7341573B1 - Onion cutting machine - Google Patents

Abstract

An object of the present invention is to provide a cutting machine that can automatically cut the roots of long onions at appropriate positions. SOLUTION: A conveyance device 20 that conveys a long onion N, a sensor 50 that detects a root N1 of the long onion N, and a root cutting device 30 that has a root cutting blade 31 that cuts the root N1 on the upstream side of the sensor 50. , a cutting position changing device that moves the root cutting blade 31 to change the cutting position of the long onion N, and a control device that controls the cutting position changing device. The control device includes a thickness detection means for detecting the thickness of the root N1 based on the detection result by the sensor 50, and a movement instruction means for moving the root cutting blade 31 according to the thickness of the root N1. ing. [Selection diagram] Figure 1

Description

The present invention relates to a machine for cutting and processing the roots of long onions.

As a cutting machine for the roots of long onions,
Some devices include a conveying device having a bucket for conveying green onions, a cutting device having a cutting blade, and an oscillator that oscillates a laser beam in the conveying direction in accordance with the position of the cutting blade (for example, Patent Document 1 reference).
In the above-mentioned cutting machine, when the green onion is placed on the bucket, the root of the green onion can be cut at a desired position by aligning the cutting position of the root of the green onion with the laser beam.

Patent No. 3477634

When cutting the root of a long onion, it is necessary to adjust the cutting position of the root depending on the thickness of the root. In the above-mentioned conventional cutting machine, the operator visually observes the thickness of the root of the long onion, determines the cutting position of the root, and sets the laser beam to hit the cutting position of the root of the long onion placed in the bucket. The position of the green onion is adjusted manually, which makes the process complicated.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a cutting machine that can automatically cut the roots of long onions at appropriate positions.

In order to solve the above-mentioned problems, the present invention provides a long onion cutting machine, which includes a conveying device that conveys the long onion to be processed in a direction intersecting the longitudinal direction of the long onion, and a cutting device having a sensor for detecting the root of the long onion; a cutting device having a cutting blade for cutting the root of the long onion on the downstream side of the sensor in the conveying direction; The present invention includes a cutting position changing device that changes the cutting position of the long onion, and a control device that controls movement of the cutting blade by the cutting position changing device. The control device includes a thickness detection unit that detects the thickness of the root of the long onion based on the detection result by the sensor, and a movement that moves the cutting blade according to the thickness of the root of the long onion. and an instruction means. A guide member is provided between the sensor and the cutting device. The guide member is a roller having an outer peripheral surface formed around an axis in the vertical direction. The end surface of the long onion on the root side comes into contact with the outer circumferential surface of the roller, and the long onion is pushed out toward the leaf side, so that the root of the long onion is arranged at a reference position.

In the cutting machine of the present invention, the root of the long onion is detected by a sensor, and depending on the detection result, the control device moves the cutting blade to cut the root of the long onion at an appropriate position. Therefore, the root of the green onion can be automatically cut at an appropriate position without the need for the operator to judge the thickness of the root of the green onion and adjust the position of the green onion.
In addition, by storing in advance the cutting position of the root of the long onion for each thickness of the root of the long onion, the cutting blade can be moved to a cutting position suitable for the long onion to be processed. I can do it.
In addition, since the root of the long onion is placed at the reference position upstream of the cutting device in the transport direction, it is possible to set the amount of movement of the cutting blade relative to the reference position for each thickness of the root of the long onion. , it is easy for the control device to control the movement of the cutting blade. In addition, the guide member is a roller whose outer peripheral surface is formed around an axis in the vertical direction, and since the end surface on the root side of the long onion comes into contact with the outer peripheral surface of the roller, the root of the long onion can be smoothly moved to the reference position. can be done.

In the above-mentioned green onion cutting machine, the sensor is an optical sensor that detects the root of the long onion, and the thickness detection means measures the time during which the sensor detects the root of the long onion. The thickness of the root of the long onion can be detected based on the following. In this way, the thickness of the root of a long onion can be detected with a simple configuration.

In the above-mentioned green onion cutting processing machine, the sensor is a camera that photographs the root of the long onion, and the thickness detection means detects the thickness of the green onion based on the image of the root of the long onion photographed by the sensor. It can be configured to detect the thickness of the root of a long onion. In this way, the number of parts for detecting the thickness of the root of the long onion can be reduced.

In the above-mentioned green onion cutting machine, it is preferable that a blowing nozzle for blowing air toward the root side of the long onion is provided upstream from the sensor in the conveyance direction.
When detecting the thickness of the root of a long onion using a sensor, if root hairs or dirt are attached to the surface of the root, the thickness of the root cannot be accurately detected. In the above configuration, before the sensor detects the thickness of the root, roots and dirt attached to the surface of the root can be removed with air, so the sensor can accurately detect the thickness of the root.

In the onion cutting machine described above, a marker member indicating a reference position is provided upstream of the sensor in the conveying direction, so that the root of the onion can be placed at the reference position. Preferably, the movement instruction means is configured to determine the amount of movement of the root cutting blade based on the positional relationship between the reference position and the root cutting blade.
In this configuration, the root of the long onion is placed at the reference position upstream of the cutting device in the conveyance direction, so the amount of movement of the cutting blade relative to the reference position is set for each thickness of the root of the long onion. This makes it easier for the control device to control the movement of the cutting blade.
Furthermore, when placing the root of the long onion at the reference position, by aligning the boundary between the leaf sheath (white part) and the root of the long onion to the reference position, the root of the long onion can be cut at the appropriate position. I can do it.

In the above-mentioned green onion cutting processing machine, a backing plate may be provided upstream of the sensor in the conveying direction, with which the end surface of the long onion on the root side comes into contact. With this configuration, when the long onion is placed on the conveying device with the end surface on the root side of the long onion in contact with the backing plate, the root portion of the long onion can be configured to pass through the sensor.

With the long onion cutting machine of the present invention, simply by placing the long onion on the conveying device, the root of the long onion is automatically cut at an appropriate position depending on the thickness of the root of the long onion, so The precision and efficiency of cutting the roots of green onions can be increased.

FIG. 1 is a plan view showing a cutting machine according to a first embodiment of the present invention. 1 is a side view showing a cutting machine according to a first embodiment of the present invention. It is a top view which showed the cutting process of the root part by the cutting process machine based on 1st embodiment of this invention. FIG. 2 is a side view showing a jet nozzle and an optical sensor of the cutting machine according to the first embodiment of the present invention. 1 is a configuration diagram showing a cutting machine according to a first embodiment of the present invention. It is a top view which showed the cutting process of the root part by the cutting process machine based on the reference example of this invention.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In addition, in the description of each embodiment, the same reference numerals will be given to the same components, and duplicate description will be omitted.

[First embodiment]
As shown in FIG. 2, the cutting machine 1A of the first embodiment includes a base mount 10, a conveying device 20 for conveying the long onion N, a root cutting device 30 having a root cutting blade 31, and a leaf cutting blade. A leaf cutting device 40 having a leaf cutting device 41 is provided. The base mount 10 is a frame having a plurality of legs 11.

Further, the cutting machine 1A of the first embodiment includes a sensor 50 that detects the long onion N, and a jet nozzle 60 that blows air toward the root side of the long onion N.
The cutting machine 1A of the first embodiment also includes a backing plate 70 provided on the downstream side of the sensor 50 in the conveyance direction X, and a guide member 75 arranged between the sensor 50 and the root cutting device 30. , is equipped with.
Furthermore, as shown in FIG. 5, the cutting processing machine 1A of the first embodiment includes a cutting position changing device 80 that moves the root cutting blade 31 to change the cutting position of the long onion N; and a control device 100 that controls the movement of the root cutting blade 31.

The transport device 20 moves a plurality of buckets 21 in the transport direction X on the upper surface of the base mount 10, as shown in FIG. In addition, in the following description, upstream and downstream mean upstream and downstream in the conveyance direction X.
The bucket 21 is a container that has a V-shaped shaft cross section and is open at the top. As shown in FIG. 1, the longitudinal direction of the bucket 21 is perpendicular to the transport direction X. It is configured such that one long green onion N is placed on an integrated bucket 21. The long green onion N placed in the bucket 21 has its longitudinal direction oriented in a direction perpendicular to the transport direction The leaf portion N2 protrudes from the upper side of FIG. 1).

In the conveying device 20, two rotating shafts 22, 22 whose axial directions are arranged perpendicular to the conveying direction X are attached to the upstream and downstream sides of the base mount 10, respectively. Both ends of each rotating shaft 22, 22 are attached to the base frame 10 so as to be rotatable around the axis.
As shown in FIG. 2, an endless chain 23 is stretched between the sprocket attached to the upstream rotating shaft 22 and the sprocket attached to the downstream rotating shaft 22, and is attached to the base mount 10. The endless chain 23 is configured to rotate counterclockwise in FIG. 2 by rotating the rotating shaft 22 by a conveyance motor (not shown).

The lower surfaces of a plurality of buckets 21 are attached to the outer circumferential side of the endless chain 23 at predetermined intervals.
When the endless chain 23 is rotated counterclockwise in FIG. 2, each bucket 21 moves from the upstream side to the downstream side on the upper surface of the base mount 10, turns around the rotation axis 22 on the downstream side, and rotates around the base mount 10. It moves from the downstream side to the upstream side at the bottom of 10. Thereafter, each bucket 21 is turned back around the rotation axis 22 on the upstream side and moves again from the upstream side to the downstream side on the upper surface of the base mount 10.

The root cutting device 30 is attached at a position on the downstream side of the base mount 10 and on the root side of the green onion N. As shown in FIG. 1, the root cutting device 30 includes a drive motor 32 attached to the upper surface of the base mount 10, a disk-shaped root cutting blade 31 fixed to the tip of the rotating shaft of the drive motor 32, It is equipped with
The axial direction of the rotating shaft of the drive motor 32 is arranged in a direction perpendicular to the transport direction X. The root cutting blade 31 rotates in conjunction with the rotation shaft of the drive motor 32. When the long green onion N moving in the transport direction X passes through the root cutting device 30, the root portion N1 of the long green onion N is cut by the root cutting blade 31.

The cutting position changing device 80 moves the drive motor 32 forward and backward in the direction perpendicular to the conveying direction 10. The movement of the root cutting blade 31 by the cutting position changing device 80 is controlled by a control device 100 (see FIG. 5), which will be described later.
By moving the drive motor 32 forward and backward in the longitudinal direction of the long onion N using the cutting position changing device 80, the root cutting blade 31 also moves forward and backward in the longitudinal direction of the long onion N, so that the cutting position of the long onion N can be changed. can.

In the base mount 10, as shown in FIG. 2, a root pressing member 35 for pressing the root N1 of the long onion N against the bucket 21 is provided at a position corresponding to the root cutting device 30. The root pressing member 35 has a sponge-like roller 37 attached to the tip of an arm 36 that is vertically tiltable. The outer peripheral surface of the roller 37 is configured to press the root N1 of the long onion N against the bucket 21.

The leaf cutting device 40 is attached at a position on the downstream side of the base mount 10 and on the leaf side of the long onion N. As shown in FIG. 1, the leaf cutting device 40 includes a drive motor 42 attached to the upper surface of the base 10, and a disk-shaped leaf cutting blade 41 fixed to the tip of the rotating shaft of the drive motor 42. It is equipped with.
The axial direction of the rotating shaft of the drive motor 42 is arranged in a direction perpendicular to the transport direction X. The leaf cutting blade 41 rotates in conjunction with the rotation shaft of the drive motor 42. When the long onion N moving in the transport direction X passes through the leaf cutting device 40, the leaf portion N2 of the long onion N is cut by the leaf cutting blade 41.

In the base mount 10, a leaf pressing member 45 for pressing the leaf N2 of the long onion N against the bucket 21 is provided at a position corresponding to the leaf cutting device 40. The leaf part pressing member 45 has a sponge-like roller 47, and is configured to press the leaf part N2 of the long onion N against the bucket 21 by the outer peripheral surface of the roller 47.

In the base mount 10, a sensor 50 is provided upstream of the root cutting device 30 in the transport direction X to detect the root N1 of the green onion N placed on the bucket 21, as shown in FIG. .
The sensor 50 of this embodiment is composed of two optical sensors 51, 51. Both optical sensors 51, 51 are attached to the upper part of a bracket 52 that is erected on the upper surface of the base mount 10, as shown in FIG. The optical sensor 51 is supported by a bracket 52 so as to be placed directly above the root N1 of the green onion N placed on the bucket 21.

The optical sensor 51 emits light downward, and is configured to detect light reflected from the root N1 when the root N1 of the long onion N is placed in the irradiation area. That is, the optical sensor 51 is configured to detect the root N1 of the long onion N. The detection results by the sensor 50 are input to a control device 100 (see FIG. 5), which will be described later.
In this embodiment, the two optical sensors 51, 51 are arranged to be shifted in the longitudinal direction of the green onion N, so that the detection range of the root N1 of the green onion N by the sensor 50 is widened.

In the bracket 52, an ejection nozzle 60 is attached to a side closer to the leaves of the long onion N than the sensor 50.
The ejection nozzle 60 is supported by the bracket 52 so as to be placed above the long onion N placed in the irradiation area of the sensor 50. A hose 62 extending from a compressor (not shown) is connected to the ejection nozzle 60, and is configured to eject compressed air supplied from the compressor from the ejection port 61.
When a sensor (not shown) detects that the long onion N approaches the irradiation area of the sensor 50, the blowing nozzle 60 blows compressed air toward the root side of the long onion N.
Note that in this embodiment, the ejection nozzle 60 is arranged at a position corresponding to the sensor 50, but the ejection nozzle 60 may be arranged upstream of the sensor 50.

As shown in FIG. 2, the backing plate 70 is attached to the base 10 at a position on the upstream side of the sensor 50 and the jet nozzle 60 and on the root side of the green onion N. The backing plate 70 is a flat plate raised perpendicularly to the upper surface of the base mount 10. As shown in FIG. 1, the flat surface 71 of the backing plate 70 is directed toward the bucket 21 side.

When placing the long onion N on the bucket 21, if the end surface on the root side of the long onion N is brought into contact with the flat surface 71 of the backing plate 70, when the bucket 21 is moved in the conveying direction N1 now passes through the irradiation area by the sensor 50.

The guide member 75 is attached to the base mount 10 at a position on the root side of the green onion N between the sensor 50 and the root cutting device 30.
The guide member 75 of this embodiment is composed of two first rollers 76 and a second roller 77. The first roller 76 and the second roller 77 are rollers made of resin and have outer circumferential surfaces formed around vertical axes. The first roller 76 and the second roller 77 are formed to have the same outer diameter. The first roller 76 and the second roller 77 are rotatable around the axis of a shaft member vertically provided on the upper surface of the base mount 10 .
In this embodiment, the first roller 76 and the second roller 77 are arranged in parallel in the conveyance direction X, and the second roller 77 is arranged downstream of the first roller 76. As shown in FIG. 3, the rotation center of the second roller 77 is arranged closer to the bucket 21 (on the leaf side of the green onion N) than the rotation center of the first roller 76.

The root-side end surface of the long onion N that has moved from the upstream side with respect to the guide member 75 comes into contact with the outer circumferential surface of the first roller 76 and the outer circumferential surface of the second roller 77 in sequence. As a result, the long onion N is pushed out toward the leaf side, and the end surface of the long onion N on the root side is placed at the reference position L1.

The control device 100 controls the movement of the root cutting blade 31 by the cutting position changing device 80, as shown in FIG. The control device 100 is a computer including a CPU, RAM, ROM, display, etc., and each means of the control device 100 is realized by the CPU executing a program stored in the ROM or the like.

The control device 100 includes a thickness detection means 110 that detects the thickness of the root N1 of the long onion N based on the detection result from the sensor 50, and a root cutting blade according to the thickness of the root N1 of the long onion N. 31 and a storage section 130.
The storage unit 130 stores cutting positions suitable for cutting the root portion N1 of the long onion N for each thickness of the root portion N1 of the long onion N. The cutting position is determined by the relative spacing with respect to the reference position L1.

The thickness detection means 110 detects the thickness of the root N1 of the green onion N based on the time during which the sensor 50 detects the root N1 of the green onion N. In other words, the longer the time that the sensor 50 detects the root N1 of the long onion N, the thicker the root N1 of the long onion N.

In the movement instruction means 120, based on the data in the storage unit 130, the root cutting blade 31 is set to be suitable for cutting the root N1 of the long onion N to be processed, depending on the thickness of the root N1 of the long onion N to be processed. It is moved to the cutting position. At this time, the movement instruction means 120 determines the amount of movement of the root cutting blade 31 based on the positional relationship between the reference position L1 and the root cutting blade 31.

Next, the cutting process of the long onion N using the cutting machine 1A of the first embodiment will be explained.
First, the conveyance device 20 of the cutting machine 1 shown in FIGS. 1 and 2 is activated, and each bucket 21 arranged on the upper surface of the base mount 10 is moved downstream. Then, the long onions N are sequentially placed on the upstream buckets 21. In addition, when placing the long onion N on the bucket 21, the end surface of the long onion N on the root side is brought into contact with the backing plate 70, as shown in FIG.

When the green onion N placed in the bucket 21 and moved in the conveying direction It will be done. As a result, root hairs and dirt adhering to the surface of the root portion N1 of the long onion N are removed by compressed air.

When the long onion N reaches the irradiation area of the sensor 50, the root N1 of the long onion N is detected by the sensor 50. Then, the thickness detecting means 110 of the control device 100 shown in FIG. 5 detects the thickness of the root N1 of the long onion N based on the time during which the sensor 50 detects the root N1 of the long onion N.
At this time, the roots and dirt attached to the surface of the root N1 of the long onion N are removed by compressed air from the jet nozzle 60 shown in FIG. 4, so the sensor 50 can accurately detect the thickness of the root N1. .

Furthermore, the movement instruction means 120 of the control device 100 shown in FIG. It is moved to a cutting position suitable for cutting the root N1 of the green onion N.

As shown in FIG. 3, the long onion N that has passed through the irradiation area of the sensor 50 has its root-side end surface sequentially abutted against the first roller 76 and second roller 77 of the guide member 75, and the long onion N passes through the irradiation area of the sensor 50. Onion N is pushed out to the leaf side. In this way, the root N1 of the long onion N smoothly moves to the reference position L1.

When the long onion N reaches the root cutting device 30, the root portion N1 of the long onion N is cut by the root cutting blade 31. At this time, the root N1 of the long onion N is pressed against the bucket 21 by the roller 37 of the root pressing member 35, so the root cutting blade 31 can cleanly cut the root N1 at a predetermined position.

Furthermore, as shown in FIG. 1, when the long onion N reaches the leaf cutting device 40, the leaf section N2 of the long onion N is cut by the leaf cutting blade 41. At this time, since the leaf part N2 of the long onion N is pressed against the bucket 21 by the roller 47 of the leaf part pressing member 45, the leaf part N2 can be neatly cut at a predetermined position by the leaf part cutting blade 41.

In the cutting machine 1A of the first embodiment as described above, as shown in FIG. Move and cut the root N1 at an appropriate position. In this way, in the cutting machine 1 of the present embodiment, simply by placing the long onion N on the bucket 21 of the conveying device 20, the root N1 is automatically cut to an appropriate size according to the thickness of the root N1 of the long onion N. Since the cutting is performed at a certain position, the accuracy and efficiency of the cutting process of the long onion N can be improved.

Although the first embodiment of the present invention has been described above, the present invention is not limited to the first embodiment, and design changes can be made as appropriate without departing from the spirit thereof.
For example, in the conveyance direction of the long onion N, a peeling machine that sprays compressed air onto the surface of the long onion N to peel off the skin of the long onion N is installed downstream of the leaf cutting device 40 shown in FIG. It is also possible to provide one. With this configuration, after cutting the root part N1 and leaf part N2 of the long onion N, old skin and dirt can be continuously removed from the long onion N, so that the efficiency of processing the long onion N can be increased. .

In the cutting machine 1A of the first embodiment, as shown in FIG. 3, the long onion N is pushed out to the leaf side by a guide member 75 having two first rollers 76 and a second roller 77, but the present invention As a reference example, for example, a flat guide member may be used. Alternatively, a cylinder mechanism may be used to push out the long green onions N toward the leaves.

Further, the number and arrangement of the ejection nozzles 60 shown in FIG. 4 are not limited, and are appropriately set in consideration of the detection accuracy of the green onion N.

In the cutting machine 1A of the first embodiment, the root N1 of the long onion N is detected by the sensor 50 using the optical sensor 51, and the thickness of the root N1 of the long onion N is detected based on the detection result. However, the configuration of the sensor is not limited to an optical sensor. For example, the thickness of the green onion N can also be detected using a laser displacement meter or image processing.

When a camera that photographs the root N1 of the long onion N is used as a sensor, the control device analyzes the image from the camera to detect the thickness of the root N1 of the long onion N and set the cutting position. Detect the boundary between the leaf sheath (white part) of the long onion and the root, which will serve as a reference point. Based on this information, the control device moves the root cutting blade 31 to cut the root N1 at an appropriate position.
Note that the control device may be equipped with a learning device (learned model) that is machine-learned so as to output a value corresponding to the cutting position of the root N1 when an image of the root N1 taken with a camera is input. In addition, the control device has a function to acquire an image of the root N1 photographed by a camera and a cutting position of the root N1 as learning data, and when an image of the root N1 is input, a value corresponding to the cutting position of the root N1 is outputted. It may also be equipped with a learning device's machine learning function.
With these configurations, there is no need for the worker to place the green onion N in the bucket 21 at a predetermined position, so that work efficiency can be improved.

[ Reference example ]
Next, a reference example cutting machine 1B will be described. As shown in FIG. 6, the cutting machine 1B of the reference example differs from the cutting machine 1A of the first embodiment (see FIG. 3) in that the root part N1 of the long onion N is arranged at the reference position L1.
Note that the cutting machine 1B of the reference example is not provided with the backing plate 70 and the guide member 75 in the cutting machine 1A of the first embodiment shown in FIG.

In the cutting machine 1B of the reference example , as shown in FIG. There is.
The marker member 90 is attached to the base mount 10 at a position on the upstream side of the sensor 50 and the jet nozzle 60 and on the root side of the green onion N. The marker member 90 is made of a flat plate raised perpendicularly to the upper surface of the base mount 10. The upper edge of the marker member 90 is arranged parallel to the transport direction X of the bucket 21. The upper edge of the marker member 90 indicates the reference position L1.

In the cutting process of the cutting machine 1B of the reference example , when placing the long onion N on the bucket 21, the root N1 of the long onion N is placed at the reference position L1 (upper edge) of the marker member 90. At this time, the boundary between the leaf sheath part N3 (white part) of the long onion N and the root N4 is aligned with the reference position L1. In this configuration, since the end of the leaf sheath N3 of the long onion N is accurately placed at the reference position L1, the root portion N1 of the long onion N can be cut at an appropriate position.

Although the reference examples of the present invention have been described above, the present invention is not limited to the reference examples , and as with the first embodiment, design changes can be made as appropriate within the scope of the invention.

1A cutting machine (first embodiment)
1B Cutting machine ( reference example )
10 Base frame 20 Conveyance device 21 Bucket 23 Endless chain 30 Root cutting device 31 Root cutting blade 32 Drive motor 35 Root pressing member 37 Roller 40 Leaf cutting device 41 Leaf cutting blade 42 Drive motor 45 Leaf pressing member 47 Roller 50 Sensor 51 Optical sensor 52 Bracket 60 Spout nozzle 61 Spout 62 Hose 70 Backing plate 71 Plane 75 Guide member 76 First roller 77 Second roller 80 Cutting position changing device 90 Marker member 100 Control device 110 Thickness detection means 120 Movement instruction means 130 Memory part N Long onion N1 Root part N2 Leaf part N3 Leaf sheath part N4 Root

Claims (6)

a conveyance device that conveys a long green onion to be processed in a direction intersecting the longitudinal direction of the long green onion;
a sensor that detects the root of the long onion;
a cutting device having a cutting blade that cuts the root of the long onion on the downstream side of the sensor in the conveyance direction;
a cutting position changing device that changes the cutting position of the long onion by moving the cutting blade in the axial direction of the long onion;
A control device that controls movement of the cutting blade by the cutting position changing device,
The control device includes:
Thickness detection means for detecting the thickness of the root of the long onion based on the detection result by the sensor;
Movement instruction means for moving the cutting blade according to the thickness of the root of the green onion;
It is equipped with
A guide member is provided between the sensor and the cutting device,
The guide member is a roller having an outer peripheral surface formed around an axis in the vertical direction,
The root part of the long onion is arranged in a reference position by the end surface of the long onion on the root side coming into contact with the outer circumferential surface of the roller and pushing out the long onion toward the leaf side. A long onion cutting machine featuring: The green onion cutting machine according to claim 1,
The sensor is an optical sensor that detects the root of the long onion,
A long onion cutting machine, wherein the thickness detecting means detects the thickness of the root of the long onion based on the time during which the sensor detects the root of the long onion. The green onion cutting machine according to claim 1,
The sensor is a camera that photographs the root of the long onion,
A long onion cutting machine, wherein the thickness detecting means detects the thickness of the root of the long onion based on an image of the root of the long onion taken by the sensor. The green onion cutting machine according to claim 1,
A long onion cutting machine characterized in that a blowing nozzle is provided upstream from the sensor in the conveying direction to blow air toward the root side of the long onion. The green onion cutting machine according to claim 1,
A marker member indicating a reference position is provided upstream of the sensor in the transport direction,
The root of the long onion can be placed at the reference position,
The onion cutting machine, wherein the movement instruction means determines the amount of movement of the cutting blade based on the positional relationship between the reference position and the cutting blade. The green onion cutting machine according to claim 1,
A cutting machine for green onions, characterized in that a backing plate is provided upstream of the sensor in the conveying direction to abut a root-side end surface of the green onions.

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