JP2003164255A - Method for removing head or carapace of lobster - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for removing the head or carapace of lobster without relying on the intuition of a relevant operator and impairing the operator's health. <P>SOLUTION: This method comprises nipping both sides of a lobster 1 with two sets of cushioning materials 3 of high coefficient of friction at a desired point at which the head or carapace is separated from the main lobster body, pulling the cushioning materials 3 in the separating direction and jetting a fluid from a nozzle 5 against the point. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing the head and instep of shrimp.

[0002]

2. Description of the Related Art Conventionally, shrimp head removal and instep stripping have been
It is done manually. However, since it depends on the sense of the finger, depending on the intuition of the operator, for the simple work, the work is performed with bare hands, which causes rough hands and tendonitis. In particular, there is a problem of causing frostbite in work in cold regions.

[0003]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method for removing the shrimp head or instep that does not depend on the intuition of the operator and does not impair the health of the operator.

[0004]

[Means for solving the problem] In the method of removing the head and instep of shrimp, at the part to be separated, sandwich both side surfaces of shrimp 1 with two sets of cushioning material 3 having a large friction coefficient and pull in the separating direction to separate. The fluid is jetted to the desired part.

[0005]

[Function] Due to the fluid pressure and the tension applied to the instep, the thin film interposed in the portion to be separated is cut, and the body and the head are separated.

[0006]

1 (a) is a plan view showing an embodiment of the present invention, (b) is a front sectional view, (c) is a side sectional view, and FIG. 2 is a front sectional view showing a second embodiment. Is.

Embodiments of the present invention will be described below with reference to the drawings.
explain. As a boundary between the body and head of the shrimp 1, which is the part to be separated, the pair of opposite holders on both sides of them
2, 21, a pair of holders 2, 21 and a pair of holders 4, 41 facing each other in the height direction of the shrimp 1 are provided. Holder 2, 2
1. Inside the holders 4 and 41, a cushioning material 3 having a relatively large coefficient of friction such as urethane foam, soft rubber, and air pad is provided, and both sides of the body and head of the shrimp 1 are pressed and gripped individually. .
Hold down the shrimp 1 body and both sides of the head while holding the holder.
2, 21 and holders 4, 41 are pulled in the separating direction. In this state, between the head of shrimp 1 and the first instep, fluid such as air or water is made to meet the kind of shrimp from the nozzle 5 and is sprayed at a predetermined pressure and spray angle. Due to the applied tension, the thin film interposed between the head and the first instep is cut, and the body and the head are separated. After that, the holders 2, 21 and the holders 4, 41 are opened, and the body and head of the shrimp 1 are opened. As a feature of the shrimp's torso shell, it is known that there is a raised small projection on a part of the back surface of the 3rd trunk of the shrimp (for example, Sadayoshi Miyake's book "Large-colored Japanese large-scale shellfish encyclopedia"). If the parts to be separated are the third section of the body and the second section of the body, holders 2, 21, holder
Set the pressing / holding position of the cushioning material 3 provided in
If the knot and the second section of the trunk are used, the upper of the trunk can be separated.

The second embodiment will be described below. Of the example
The holders 2, 21, and holders 41, 41 are pulled in an arc 6 shape, and the shrimp 1 is warped so that the body instep and the head or the gap between the body insteps opens outward, and the nozzle 5 To eject fluid from. The gap between the insteps is widened and the effect of injection is enhanced.

[0009]

EFFECTS OF THE INVENTION (1) Since tension is applied to the shrimp shell in advance and a fluid is jetted from the nozzle to the thin film between the shells, separation is ensured. (2) Since the shrimp instep is pressed and grasped by the cushioning material 3 and separated by the fluid, there is no worry of rough hands and tendonitis.

[0010]

[Brief description of drawings]

FIG. 1A is a plan view, FIG. 1B is a front sectional view, and FIG. 1C is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a side sectional view showing a second embodiment of the present invention.

[Explanation of symbols]

1 shrimp, 2, 21, 4, 41 holder, 3 cushioning materials, 5 nozzles, 6 arcs

Claims (2)

[Claims] 1. A method of removing a shrimp's head or instep, sandwiching both sides of the shrimp with two sets of cushioning materials having a large friction coefficient at the part to be separated, pulling in the separating direction, and ejecting the fluid to the part to be separated. A method of removing the head and instep of shrimp characterized by: 2. The method for removing a shrimp head or instep according to claim 1, wherein the separating direction is an arc shape.