JP4498304B2 - Egg shell opening method and egg shell opening device - Google Patents

Description

The present invention relates to an egg shell opening method and an egg shell opening device, and more particularly to an egg shell opening method and an apparatus for cutting an eggshell membrane after forming a kerf in an egg shell by irradiating a laser beam. .

Eggs are an excellent food in nutrition and price. At home, egg shells and egg whites (hereinafter referred to as egg liquid) are taken out one by one, so even if the shells are mixed with the contents, it is not a problem as long as they are removed. On the other hand, in order to industrially divide eggs, various egg breaking apparatuses that automatically divide eggs are well known. Since these egg breaking apparatuses are mechanisms that strike and crack the shell with a knife, it is difficult to completely eliminate the egg shell pieces from being mixed into the egg liquid during the egg breaking. Therefore, a method of cutting an eggshell using a laser beam without using a knife has been proposed. (Patent Document 1 and Patent Document 2)
JP-A-53-66482 Japanese Patent Laid-Open No. 2005-52131

The problem to be solved by the present invention is that, in the prior art of Patent Document 1 in which an egg is supported and rotated at both ends when the eggshell is cut with a laser beam, the laser beam is focused on the egg shell of individual differences. It was difficult. Also, the first and last kerfs formed by the laser beam were difficult to match (not connected as a single line). These had the problem that the eggshell could not be cut completely. Therefore, the technique of cutting the eggshell by increasing the output of the laser beam at present is adopted, but if the output of the laser beam is increased, the laser beam reaches the egg white in the eggshell and the egg white is altered or burnt, resulting in a characteristic odor. There is a problem of generating.
The present invention has been made to solve the above-mentioned problems. The laser beam is focused on a predetermined position of the eggshell to reduce the output of the laser beam, and the laser beam is irradiated to such an extent that the eggshell membrane is left unpleasant. The present invention provides a method and apparatus for dividing an egg shell into two parts without generating a bad odor.

That is, the present invention relates to the perforation of the rotatable egg receiving plate that rotates with the rotation of the rotating means that has a hole that can support the trunk of the egg upright. And projecting to the outer periphery of the eggshell projecting from the bottom of the perforation bottom of the egg receiving plate with the rotation of the egg by the rotation of the egg receiving plate accompanying the driving of the rotating means , An egg shell opening method characterized in that a cut groove formed by leaving the eggshell membrane is left in the egg shell, and then the egg shell is divided into two by inserting a blade member into the groove. At this time, the egg is a shell-opening method in which the egg is rotatable around the upright axis in the perforation, and the blade member is a flat blade slidable on the back surface of the egg receiving plate.

In the egg shell opening method of the present invention, the blunt end portion is placed downward by placing the blunt end portion of the egg in a hole that can be supported upright, and can be rotated horizontally around the center of the hole. By setting the laser beam irradiation focus at the hole supporting the eggshell protruding from the back of the hole, it is possible to easily set the focus of the laser beam to the eggshell even for eggs with individual differences The reason is that the position of the focal point is less affected by individual differences and that the air chamber is at the blunt end when the shell is opened, so that the egg white can be prevented from being accidentally dropped and the egg white can be efficiently recovered. Because of the reason. The reason why the kerf is formed by leaving the eggshell membrane is that the burning of the egg white due to the laser beam irradiation can be prevented, and the eggshell pieces are collected in the egg white egg yolk liquid collected when cutting the kerf by the blade member. This is because it is possible to easily prevent contamination.

In addition, the apparatus of the present invention for achieving the above method is provided with a hole that can support an upright support for the circumference of the egg, and rotates in a state of maintaining an upright posture of the egg in conjunction with the rotating means. An egg receiving plate, laser beam irradiating means for irradiating a laser beam to a peripheral edge of the back side of the perforation of the egg receiving plate in accordance with the rotation of the egg receiving plate in conjunction with the rotating means, and the egg A blade member slidably disposed along the back surface of the backing plate, and a sliding means for the blade member, and the surface of the eggshell surface formed by the laser beam with the irradiation intensity of the laser beam applied to the egg supported by the perforation. The egg shell opening device is characterized in that the kerf is adjusted so as to leave an eggshell membrane, and the blade member is a flat blade. By adopting such a structure, it becomes possible to easily focus the laser beam irradiation on the surface of the eggshell even for eggs with individual differences, and it is possible to provide an egg shell opening device that does not contain eggshell. Good.

According to the egg shell opening method of the present invention, it is possible to cut the eggshell while leaving the eggshell membrane without opening the shell with only a knife. It is possible to prevent the generation of a characteristic odor burned by the egg white produced at the time of cutting. Especially when industrially large-scale eggs are shell-opened, the effect is great. Furthermore, the laser beam can be focused on a predetermined position of the eggshell and irradiated to reduce the output. The manufacturing cost can also be reduced.

Hereinafter, the present invention will be described with reference to an embodiment of an egg shell opening device of the present invention shown in the drawings.

FIG. 1 is a perspective cross-sectional explanatory view showing an embodiment in which an egg is placed on an egg receiving plate according to the present invention, and FIG. 2 is a front view showing an embodiment of a structure for rotating the egg receiving plate. FIG. FIG. 3 is an explanatory view of the process of opening the eggshell, and FIG. 4 is a perspective explanatory view showing an outline of one embodiment of the shell opening device of the present invention.

An egg shell opening device for achieving the egg shell opening method of the present invention is shown in FIGS. 1 to 4 as a schematic structure of an embodiment of the egg shell opening device. 6 along the egg receiving plate 5 interlocked with the rotating means 8, laser beam irradiating means 12 for irradiating a laser beam to the peripheral edge of the back side of the perforation 6 of the egg receiving plate 5, In this structure, the blade member 10 is slidably disposed, and a sliding means (not shown) for sliding the blade member 10 is provided.
In the apparatus of the present embodiment, as shown in FIG. 4, the egg receiving plate 5 is arranged at five locations at equal intervals on the inner periphery of the rotating disk 16 that is rotated by a driving means (not shown). Further, an egg pressing device 11 supported by the elevating means 17 is attached at a predetermined position above the egg receiving plate 5.

Next, a method for opening an egg shell using the apparatus according to the embodiment of the present invention will be described in order based on the operation.
First, as shown in FIG. 1 and FIG. 3A, the egg 1 is supported upright by projecting the blunt end of the perforation 6 of the egg receiving plate 5. The egg 1 supported by the egg receiving plate 5 rotates while maintaining an upright posture in accordance with the driving of the rotating means 8 of the egg receiving plate 5. As the egg 1 rotates, a laser beam is applied to the outer circumference of the eggshell protruding from the bottom of the bottom of the perforation 6 of the egg receiving plate 5 (see FIG. 3B). At this time, since the laser beam is applied to the peripheral edge of the back surface of the perforation 6 of the egg receiving plate 5, the surface of the protruding portion of the egg 1 is cut into a single groove 15 along the back peripheral edge of the perforation 6. Is given. There is no particular limitation as long as the laser beam can be irradiated to the extent that the eggshell membrane is left as the laser beam. For example, the wavelength of the carbon dioxide laser is 10.6 μm.

At this time, the kerf 15 may not necessarily be the entire circumference of the egg 1, but may be the extent that the blade member 10 can be inserted. The egg 1 provided with the kerf 15 and supported by the perforation 6 is transferred directly below the pressing means 11 along with the rotation of the rotating disk 16, and is pressed and fixed so as not to swing from above ((C in FIG. 3). )reference).
Next, when the sliding means of the blade member 10 slidably disposed along the back surface of the egg receiving plate 5 is activated, the blade member 10 slides on the back surface of the egg receiving plate 5 and the kerf 15 Inserted into. By inserting the blade member 10, the eggshell membrane is cut, and the eggshell cut piece 4 at the blunt end of the eggshell is completely separated from the main body of the egg 1 (see FIG. 3D) and discharged by a discharge means (not shown). . At this time, the egg liquid in the egg 1 is left in the egg by the flat blade member. Subsequently, by the rotation of the rotating disk 16, the egg 1 is transferred directly above the egg tray 13 and the insertion of the blade member 10 into the kerf 15 is released, whereby the blunt end of the egg 1 is completely opened, The egg white yolk liquid 2 which is the contents in the egg 1 flows out from the opening and is collected in a predetermined tray 13 (see FIG. 3E).

The empty eggshell 3 from which the contents have been taken out is transferred directly above an eggshell removal means (not shown) (blowing off with compressed air in this embodiment) and removed from the egg receiving plate 5 (see FIG. 3 (F)). A new egg 1 is supplied to the egg receiving plate 5 (see FIG. 3A). Thereafter, the same operation is repeated.
By using the egg shell opening method and apparatus according to the present invention as shown in the above embodiment, the egg white egg yolk liquid free from the burning smell of egg white and containing egg shell fragments is industrially inexpensive. Is obtained.

In the present embodiment, explanations such as moving the egg receiving plate 5 using the rotating disk 16 and removing the eggshell of the shell with compressed air are added, but the present invention is not limited thereto. Instead, the technique of shelling an egg using both a laser beam and a blade member belongs to the technical scope of the present invention.

The perspective cross-sectional explanation which shows one Example of the state which mounted the egg on the egg receiving plate concerning this invention Front explanatory view showing an embodiment of a structure for rotating an egg receiving plate Explanatory drawing of the process of opening the eggshell The perspective explanatory view showing the outline of one embodiment of the egg shell opening device of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Egg 2 Egg white egg yolk liquid 3 Egg shell 4 Egg shell cut piece 5 Egg receiving plate 6 Egg receiving plate perforation 7 Gear 8 Motor 9 Intermediate gear 10 Flat blade (blade member)
DESCRIPTION OF SYMBOLS 11 Egg pressing device 12 Laser beam irradiation means 13 Egg white egg yolk saucer 15 Cut groove 16 Rotating disk 17 Lifting means

Claims (3)

The blunt end of the egg is supported by projecting the egg blunt end to the back side of the egg receiving plate in the perforation of the rotatable egg receiving plate that rotates in accordance with the driving of the rotating means having a hole that can support the egg shell upright. The egg shell is irradiated with a laser beam on the outer periphery of the egg shell projected from below the perforated bottom of the egg receiving plate as the egg rotates due to the rotation of the egg receiving plate driven by the rotating means. A method for opening an egg shell, comprising: forming a kerf formed by leaving a film, and then inserting a blade member into the kerf to divide the egg shell into two. 2. The egg shell opening method according to claim 1, wherein the egg is rotatable in the perforation around its upright axis and the blade member is a flat blade slidable on the back surface of the egg receiving plate. 3. And egg receiving plate for rotating the cylinder circumference of the egg in a state in conjunction with the rotating means Yes wear erecting supportable hole was kept upright posture of eggs, the eggs receiving plate in conjunction with the rotating means A laser beam irradiating means for irradiating a laser beam to the back peripheral edge of the perforation of the egg receiving plate in accordance with the rotation of the egg; and a flat blade member slidably disposed along the back surface of the egg receiving plate; The blade member sliding means, and the irradiation intensity of the laser beam to the egg supported by the perforation is adjusted so that the kerf on the eggshell surface formed by the laser beam leaves the eggshell membrane. Egg shell opening device.

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