JP2717705B2 - How to peel long objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a method for efficiently removing the aged outer skin of a long object such as onion without human intervention. .

(Prior Art) In general, when putting harvested green onions on the market, it has been practiced to peel off the skin which has aged and cannot be used for food, which covers the surface of the white roots.

In recent years, such a peeling operation has been mechanized in place of an inefficient and environmentally unfriendly manual operation.

That is, as described in, for example, JP-A-58-23776, JP-A-59-61, etc., a pressurized fluid such as water or compressed air is sprayed onto the outer periphery of the green onion, and the skin is cut without human intervention. Peeling is being done.

(Problems to be Solved by the Invention) However, all of the conventional methods of peeling have various problems in terms of safety of an operator, work efficiency, completeness of peeling, and the like.

Also, without damaging the inner part with high commercial value,
At present, a technology and a device for continuously and automatically peeling only the aged skin have not yet been developed.

The present invention has been made in view of these points, and an object of the present invention is to provide a method of peeling only an aged skin of a long object such as green onion continuously and without leaving any manpower. I do.

[Structure of the Invention] (Means for Solving the Problems) According to the method of peeling a long object of the present invention, the transfer of the long object to the neck outer surface of the long object which is vertically supported and continuously conveyed horizontally is performed. A step of injecting compressed air from an air injection mechanism that is continuously moved in the horizontal direction together with the air injection mechanism, whereby a short cut is made in the neck portion, and an air injection mechanism that is continuously moved obliquely downward in preparation of the long object. Injecting compressed air from the above, thereby making a long cut over the entire length from the cut to almost the lower end, and further injecting compressed air downward into the long cut product having the long cut over the entire length. Therefore, the method is characterized in that it comprises a step of peeling off the epidermis.

In the present invention, the air injection mechanism in the step of making the first short cut and the step of making the long cut over the second entire length, or the device for injecting the compressed air downward in the third skin peeling step includes: For example, it is desirable to use an apparatus having the following structure provided with an air injection nozzle having one or a plurality of air injection ports.

That is, as the air injection mechanism used in the first step, an air injection nozzle provided with one small-diameter air injection port on the outer periphery is used to transport a long object such as an onion in the horizontal direction. It is configured to be continuously moved in the horizontal direction by being engaged with a continuous carrier such as an endless chain or a wire that travels in the same direction at the same speed via a holding member. It is desirable to use a fixed-height type air jet mechanism in which the nozzle is slid horizontally by a slide mechanism so as to approach and then separate from a long object being conveyed for a certain period of time.

Further, as the air injection mechanism used in the second step, an air injection nozzle having an air outlet having a small diameter as described above is disposed so as to be inclined downward along a horizontal conveying path of a long object. It is desirable to use an inclined-type air jet mechanism that is configured to be engaged with the continuous transported body via a holder and to approach a long object being transported for a certain period of time by a slide mechanism. .

Further, as the compressed air downward injection device used in the third step, an air injection nozzle provided with a plurality of downward air injection ports is provided in the same manner as the inclined type air injection mechanism. It engages with the continuous transporter that is arranged inclined downward along the transport path, and approaches a long object being transported for a certain period of time by the slide mechanism. Devices configured to inject compressed air can be used.

(Operation) In the peeling method of the present invention, a long object such as an onion which is vertically supported and continuously conveyed in the horizontal direction is arranged along the conveying path of the long object in the first step. Compressed air is locally concentrated and injected from an air injection mechanism that is installed and moved in the horizontal direction at the same speed, whereby only one layer having a length of 1 to 5 cm is applied to the outer skin of the neck below the holding portion. A short cut is made.

Next, the long object with such a short cut is
In a subsequent second step, compressed air is injected in a narrow width from an air injection mechanism which is disposed to be inclined downward along the transport path and is moved at the same speed in this direction, whereby the lower end is cut from the cut. A long cut over the entire length is made.

Further, in the third step, compressed air is blown downward to the entire outer periphery of the long object having the long cuts extending over the entire length, whereby the outer skin is peeled off from the cut to the fine skin. Completely stripped off.

At this time, the inner white roots and the like having high commercial value are not damaged.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory view schematically showing a method of peeling onions according to one embodiment of the present invention.

As shown in the figure, the onion 1 which is vertically supported with its leaves at the top and continuously conveyed in the horizontal direction by the conveyor is completely stripped of the skin through the following three steps in order.

That is, first, in the first step (I), the onion 1
A plurality of air injection nozzles 3 are attached at equal intervals to a horizontal endless transport body 2 that travels at the same speed in the same direction along the transport path, and a position at a constant height is set in the horizontal direction. Very high injection pressure (injection speed) of compressed air injected from the air injection nozzle 3 continuously moved
Thereby, a short cut is made in the outer skin of the neck portion of the green onion 1 in the length direction.

Next, in a second step (II), the long onions 1 with short cuts are provided on the inclined endless transport body 4 which is disposed to be inclined downward along the transport path and travels at the same speed in this direction. A long cut is made from the cut to almost the lower end by the injection pressure of the compressed air injected from the plurality of air injection nozzles 5 attached at equal intervals.

Further, the onion 1 having the long cut formed over the entire length is inclined downward along the transport path of the onion 1 in the subsequent third step (III), similarly to the inclined endless transport body 4. The compressed air is sprayed downward on the entire outer periphery by a compressed air injection nozzle 6 having a plurality of injection ports, and the compressed air is injected downward by the injection pressure of the air. The epidermis is peeled off from the cut and completely peeled off.

As described above, according to the embodiment, the onion 1 continuously conveyed in the horizontal direction in a state where the leaves are vertically erected, with the tips thereof upward.
Comprises a first step of making a short cut in the neck, a second step of making a long cut over the entire length, and a step of peeling the outer skin of the onion 1 from the cut. By doing so, the inner white root is completely stripped to the fine skin without being damaged.

[Effects of the Invention] As described above, according to the skinning method of the present invention, without damaging the inner portion of a long object like an onion,
Only the aged outer skin can be completely stripped off.

In addition, the skin can be automatically and continuously peeled without any need for human intervention, and a large amount of long objects can be efficiently processed in a short time.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a method of peeling onions according to one embodiment of the present invention. 1 ... Leek onion 2 ... Horizontal endless transport body 3,5,6 ... Air jet nozzle 4 ... Tilt endless transport body

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shoji Nakamura 66-2 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Toshiba Engineering Co., Ltd. (72) Inventor 66-2 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa, Toshiba Engineering Co., Ltd.

Claims (1)

(57) [Claims] A compressed air is jetted onto an outer surface of a neck of a long object vertically supported and continuously conveyed in a horizontal direction from an air jet mechanism continuously moved in a horizontal direction along with the conveyance. Making a short cut in the neck by means of: and injecting compressed air from an air jet mechanism which is continuously moved obliquely downward into the cut of the long object, whereby a long cut is made over the entire length from the cut to almost the lower end. And further injecting compressed air downwardly into the long object having the long notch over the entire length,
A method for peeling a long object, comprising a step of peeling off the epidermis.