JP2003266388A - Eggshell cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an eggshell cutting device capable of smoothly finishing the cut surface of an egg cut-off part without generating noise. <P>SOLUTION: This eggshell cutting device 1 comprises an egg fixing tool 3 capable of placing and fixing an egg E with the cut-off part of the egg E upward and arranging the egg E in a cutting position in the cutting by supplying a prescribed pressure thereto; an ultrasonic cutter 5 capable of cutting the cut-off part of the egg E placed in the cutting position by transmitting the ultrasonic vibration of an ultrasonic oscillator 51 to a cutting chip 52; and a cutter fixing mechanism 7 which vertically movably holds the ultrasonic cutter 5 and can fix, in the cutting, the ultrasonic cutter in the state where the cutting chip 52 abuts on the cut-off part of the egg E. <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 an egg shell cutting device for cutting a blunt end of an egg using ultrasonic vibration.

[0002]

2. Description of the Related Art In general, one of the diseases of birds is Newcastle disease. The illness is characterized by severe cold symptoms (cough, sneezing, diarrhea), which eventually lead to dysfunction of various internal organs, and neurological symptoms such as ataxia.
It is an infectious disease with a high mortality rate. Vaccines are currently used to prevent this disease. This vaccine
The urine in the produced hatched chicken eggs is used.

FIG. 21 is a schematic diagram showing this produced hatched chicken egg. In this FIG. 21, the produced hatched chicken egg 101 is
The shell 103 has a so-called oval shape having a sharp end portion 103a and a blunt end portion 103b, and most of the shell 103 on the sharp end portion 103a side has a fetus and the like.
There is a urine solution 107 separated by a allantoic membrane 105 on a part of the side 3b, and a cavity 109 is formed at the end of the sharp end 103a. In order to take out the urine solution 107 in the blunt end 103b of the hatched egg 101 in the aseptic state, it is necessary to mechanically cut the blunt end 103b. Conventionally,
An air cutter is used to cut the blunt end 103b of the hatched egg 101.

FIG. 22 is a schematic view showing a conventional egg shell cutting device. As shown in FIG. 22, this egg shell cutting device 131 mounts and fixes a large number of hatched chicken eggs 101, 101, ... On an egg fixing device 133 so that each blunt end portion 103b faces upward, and pneumatically presses 135. The hatched chicken egg 1 placed and fixed on the egg fixing device 133 by the driven stainless cutter 137.
The blunt end portions 103b, 103b, ... Of 01, 101, ... Are cut.

[0005]

However, the conventional eggshell cutting device 131 has a problem that a very loud noise is generated at the time of cutting because the stainless cutter 137 is driven by the air pressure 135. Further, in the cutting method using the conventional egg shell cutting device 131, the blunt ends 103b, 103b, ... Of the hatched eggs 101, 101, ... Are cut by the stainless steel cutter 137, so that the hatched eggs 101, 101 ,. Each of the blunt ends 103b, 103 of
There is a problem that the cut surfaces of b, ... become rough, which is very inconvenient for the subsequent work. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide an egg shell cutting device that is noise-free and can smoothly finish the cut surface of the blunt end of the egg.

[0006]

In order to achieve the above object, the egg shell cutting device according to the invention of claim 1 is a chicken egg shell cutting device for cutting a blunt end of an egg, wherein the blunt end of the egg is With the egg egg fixed in a state of facing upwards, the egg egg fixture that can supply a predetermined pressure to the egg when cutting and can be placed at the cutting position, and transmit the ultrasonic vibration of the ultrasonic vibrator to the cutting tip And an ultrasonic cutting machine that can cut the blunt end of the egg on the egg fixing device placed in the cutting position, and the ultrasonic cutting machine is vertically movable,
In addition, a cutting machine fixing mechanism capable of fixing the ultrasonic cutting machine in a state where the cutting tip is brought into contact with the blunt end portion of the chicken egg during cutting of the egg is provided. According to a second aspect of the invention, in the first aspect, the ultrasonic cutting machine is
An ultrasonic transducer that vibrates ultrasonic waves when supplied with power from a power source, an exponential horn that is provided at the output end of the ultrasonic transducer and expands the amplitude, and a cut attached to the exponential horn. It is characterized by comprising a chip integrated step horn.

According to a third aspect of the present invention, in the first aspect, the ultrasonic cutting machine receives an electric power from a power source to vibrate ultrasonically, and an output end of the ultrasonic vibrator. From the exponential horn that is provided in and expands the amplitude, a step horn attached to the exponential horn, and a cutting tip provided at the tip of the step horn and provided in a direction perpendicular to the long axis of the step horn. It is characterized by According to a fourth aspect of the present invention, in the second or third aspect, the cutting tip has a cylindrical shape with a diameter of 15 to 19 [mm], and the edge angle of the tip is about 20 degrees. To do.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments and examples of the present invention will be described below with reference to the drawings. <First Embodiment and First Example> FIGS. 1 to 9
Are for explaining the first embodiment and the first example of the present invention. FIG. 1 is a side view showing an egg shell cutting device according to a first embodiment and examples of the present invention.

In FIG. 1, the egg shell cutting device 1 is
It is roughly divided into an egg fixing device 3, an ultrasonic cutting machine 5, and a cutting machine fixing mechanism 7. More specifically, the egg fixing device 3 includes a base plate 31 formed of a predetermined material in a rectangular plate shape, and springs 32, 32 provided at four corners of the base plate 31 and having predetermined elastic forces. 32,3
2 and a rectangular plate-shaped fixing plate 33 which is fixed on the springs 32, 32, 32, 32 and has a hole which can be inserted up to a certain distance from the sharp end of the egg E. The egg fixing device 3
Is mounted and fixed by inserting it into the hole of the fixing plate 33 from the sharp end of the egg E to a certain distance and supplying a predetermined pressure to the egg E at the time of cutting by the springs 32, 32, 32, 32. You can do it. The egg fixing device 3 can be installed at a cutting position.

The ultrasonic cutting machine 5 includes an ultrasonic transducer 51.
Is transmitted to the cutting tip 52 so that the blunt end of the egg E on the egg fixing device 3 placed at the cutting position can be cut. The ultrasonic oscillator 51 of the ultrasonic cutting machine 5 is configured to vibrate ultrasonically when supplied with electric power from a power source (not shown). The cutting machine fixing mechanism 7 includes a fixing base 71 having a hole of a predetermined diameter formed in the center of a rectangular plate body, and a predetermined fixing base fixed at four corners of the fixing base 71 and at a right angle to the surface of the fixing base 71. Length 7
2, 72, 72, 72, and the ultrasonic cutting machine 5 can be moved up and down by being able to be inserted into and removed from the holes of the fixed base 71. Further, the cutting machine fixing mechanism 7 is
At the time of cutting eggs, as shown in FIG.
The ultrasonic cutting machine 5 is fixed in a state in which 2 is brought into contact with the blunt end of the egg E, and the ultrasonic cutting machine 5 can be raised after the completion of cutting the egg.

FIG. 2 is a diagram showing the overall configuration of the ultrasonic cutting machine of the egg shell cutting apparatus according to the first embodiment and the first example of the present invention. FIG. 3 is an enlarged perspective view showing a step horn integrated with a cutting tip of an ultrasonic cutting machine of an egg shell cutting device according to the first embodiment and the first example of the present invention. FIG. 4 is an enlarged sectional view showing a cutting tip portion of the ultrasonic cutting machine of the eggshell cutting device according to the first embodiment and the first example of the present invention.

1, FIG. 2, FIG. 3 and FIG. 4, the ultrasonic cutting machine 5 is provided with an ultrasonic vibrator 51 which receives an electric power from an electric power source (not shown) and vibrates ultrasonically. An exponential horn 53 that is provided at the output end of the ultrasonic transducer 51 to expand the amplitude, and a cutting tip integrated step horn 54 that is integrally configured with a cutting tip 52 attached to the exponential horn 53. It consists of Here, the ultrasonic transducer 51 is 20
It consists of a Langevin type oscillator for bolting for [kHz]. The exponential horn 53 is for expanding the amplitude, and is made of a duralumin-made substantially conical rod, and has a diameter of 56 [mm] at the thick end surface and a diameter of 12 [mm] at the thin end surface. , With an amplitude expansion ratio of about 4.7.

The cutting tip integrated step horn 54
Is a first step horn 54a that mainly uses longitudinal vibration.
And a second step horn 54b in which torsional vibration is strengthened in addition to longitudinal vibration as shown in FIG. The first
As shown in FIG. 3, the step horn 54a of the step horn 54a is, for example, a cylindrical rod-shaped body 541 having a diameter of 12 [mm] and a length of 147 [mm].
A hole 542 having a diameter of 10.4 [mm] and a depth of about 30 [mm] is bored from one end (tip) of the hole, and the hole 542 is further provided.
From the bottom, for example, diameter 8.5 [mm], depth about 58.5 [mm]
And a cylindrical rod-shaped body 541.
As shown in FIG. 4, a cutting tip 52 having an edge angle of about 20 degrees is integrally provided at the tip of the.

The second step horn 54b has a first
The step horn 54a has a structure exactly the same as that of the step horn 54a, and in addition to this, on the outer circumference of the cylindrical rod-shaped body 541, as shown in FIG.
[Mm], width such as 0.5 [mm], depth such as 0 to 3.0
10 slits 545 having a slit angle of 45 [mm] are formed. Thus, the cylindrical bar 54
By providing the slit 545 on the outer circumference of No. 1, the second step horn 54b is one in which the torsional vibration is strengthened in the longitudinal vibration.

The above-mentioned device configuration is configured as follows. First, consideration will be given to the fact that the depth (length) of the edge portion of the step horn 54a of the cutting tip integrated step horn 54 is preferably 30 [mm]. Regarding the first step horn 54a, the depth (length) of the cutting tip 52 is 0 [mm], 10 [mm], 20 [m
Four types of m] and 30 [mm] were prepared. For these four types of step horns, the torsional vibration amplitude distribution near the circumference of each step horn and the longitudinal vibration amplitude at the tip of each step horn were measured using a laser Doppler vibrometer. For the measurement, input power to the ultrasonic transducer 51 was set to 2 without applying load to the step horn.
[W] The value was fixed.

FIG. 6 is a diagram showing the vibration amplitude measurement value of each step horn measured under the above-mentioned various conditions. The vertical axis shows the torsional vibration amplitude, and the horizontal axis shows the vibration amplitude from point P shown in FIGS. 1 and 2. The distances are shown respectively. Further, in FIG. 6, □ marks and solid lines are step horns having an edge depth of 30 [mm], and ○ marks and fine dotted lines have an edge depth of 20.
[Mm] step horn, small circles and rough dotted lines are measured values of the step horn having an edge depth of 10 [mm], and Δ marks and broken lines are measured values of the step horn having an edge depth of 0 [mm].

As can be seen from FIG. 6, both the torsional vibration amplitude and the longitudinal vibration amplitude at the tip of each step horn increase as the depth (length) of the cutting tip 52 increases, and the step horn of 30 [mm] is obtained. Is the largest. As a result, the cutting tip 52 of the first step horn 54a
Is appropriate for a depth of 30 mm, and this value was selected as desirable.

Next, the first step horn 54a having the above-described structure and the second step horn 54b having the slit will be compared and examined. Regarding the first step horn 54a and the second step horn 54b,
The torsional vibration amplitude distribution around the horn circumference and the longitudinal vibration amplitude at the tip of the horn at the time of resonance of each horn were measured using a laser Doppler vibrometer. The measurement was performed without applying a load to each step horn, with the input power to the ultrasonic transducer 51 being constant at 2 [W].

FIG. 7 is a diagram showing measured values of vibration amplitude of each step horn measured under the various conditions described above. The vertical axis shows the torsional vibration amplitude and the vertical vibration amplitude, and the horizontal axis shows FIGS. 1 and 2. The distances from point P are shown. Further, in FIG. 7, the □ mark and the solid line indicate the torsional vibration amplitude of the first step horn 54a, and the ◯ mark and the dotted line indicate the second vibration amplitude.
The double-square mark indicates the vertical vibration amplitude of the first step horn 54a, and the double-circle mark indicates the vertical vibration amplitude of the second step horn 54b.

From FIG. 7, the second step horn 54 is
It can be seen that the torsional vibration amplitude at the tip of b is 10.0 [μm], which is about 14.5 times that of the torsional vibration amplitude of 0.7 [μm] at the tip of the first step horn 54a. . On the other hand, the vertical vibration amplitude of the second step horn 54b is 10.5 [μm], which is about 0.7 times smaller than the vertical vibration amplitude 15.0 [μm] of the first step horn 54a. I see.

Next, the egg shell cutting device 1 of FIG. 1 provided with the first step horn 54a and the second step horn 5.
Using the egg shell cutting device 1 of FIG.
Measure the cutting time of. First, the chicken egg E is placed and fixed in the hole of the fixing plate 33 of the chicken egg fixture 3 with the tip end thereof facing downward (the blunt end portion facing up), and the chicken egg fixture 3 is placed at the cutting position. Next, the ultrasonic cutting machine 5 provided with the first step horn 54a is inserted into the hole of the fixing base 71 from above the fixing base 71 of the cutting machine fixing mechanism 7, and placed on the fixing plate 33 of the egg fixing device 3. The cutting tip 52 of the first step horn 54a is brought into contact with the blunt end of the fixed egg E. Also, the egg E
A load of 8 [N] from the egg fixing device 3 can be applied to the chicken. This is such that a load meter and a jackie are arranged under the egg fixing device 3, the load meter and the egg fixing device 3 are pushed up by the jacky, and the load is measured by the load meter.
It can be obtained by stopping pushing up the jackie when [N] is reached.

The ultrasonic transducer 5 of the ultrasonic cutting machine 5
The power of 4 [W], 8 [W], 14 [W], and 20 [W] was respectively supplied to 1 and the cutting operation was performed 10 times for each power, and the average value of the measured values was obtained. Here, the chicken egg E used had the same brand and an egg weight of 64 to 74 [g]. Further, the ultrasonic cutting machine 5 provided with the second step horn 54b was also measured under the same conditions as described above.

FIG. 8 is a diagram showing the results of measuring the cutting time of the egg E under the above-mentioned conditions, in which the vertical axis shows the time required for cutting the eggshell [s] and the horizontal axis shows the input power [W]. Are taken respectively. Further, in FIG. 8, the □ mark and the solid line show the chicken egg shell cutting time required by the first step horn 54a, and the ○ mark and the one-dot chain line show the chicken egg shell cutting time required by the second step horn 54b.

In both the first step horn 54a and the second step horn 54b, the larger the input power,
The time required for cutting eggshells is shortened. With any input power (input power to the ultrasonic transducer 51), the time required for cutting the eggshell by the first step horn 54a is the second.
It can be seen that it is shorter than the time required for cutting the eggshell by the step horn 54b. When the input power is 20 [W], the egg shell cutting time required for the first step horn 54a is 1.2 [s], and the egg shell cutting time required for the second step horn 54b is 2. About 0.6 compared to 0 [s]
You can see that it can be cut in twice the time. In addition, the first step horn 54a was 4 [W] or less, and the second step horn 54b was 8 [W] or less, the eggshell E could not be cut even after 600 [s] had elapsed. From these facts, it is considered that the longitudinal vibration of the first step horn 54a and the second step horn 54b is more effective for the shell cutting than the torsional vibration.

FIG. 9 is a perspective view showing a chicken egg cut by the above-mentioned egg shell cutting device. As shown in FIG. 9, it can be seen that the blunt end portion of the egg E is smoothly cut into a circular shell. The vibration amplitude and the time required for cutting the eggshells in the cutting tip integrated step horn 54 were compared between the first step horn 54a with no slit and the second step horn 54b with a slit. As a result, it can be seen that, with the same input power, by inserting a slit, the torsional amplitude vibration increases, but the longitudinal vibration amplitude decreases. Further, the time required for cutting the eggshell can be shortened in the first step horn 54a. As described above, according to the egg shell cutting device 1 of the first embodiment and the first example of the present invention, a short time (1.
2 [s]), there is an advantage that there is no noise, and a circular and smooth fracture surface can be obtained.

<Second Embodiment and Second Example> FIGS. 10 to 19 show a second embodiment and a second embodiment of the present invention.
It is a figure for demonstrating the egg shell cutting device which concerns on the Example of this. FIG. 10 is a perspective view showing an egg shell cutting device according to the second embodiment and the second example of the present invention. In FIG. 10, the egg shell cutting device 1A is roughly divided into an egg fixing tool 3, an ultrasonic cutting machine 5A peculiar to the second embodiment and the second example, and a cutting machine fixing mechanism 7. It is configured. More specifically, since the egg fixing device 3 has the same configuration as that of the first embodiment and the first embodiment, the same members are designated by the same reference numerals. The description is omitted.

The ultrasonic cutting machine 5A peculiar to the second embodiment and the second embodiment basically also transmits the ultrasonic vibration of the ultrasonic vibrator 51 to the cutting tip 52A to perform the cutting. The blunt end portion of the egg E on the egg fixing device 3 placed at the position can be cut. The ultrasonic oscillator 51 of the ultrasonic cutting machine 5 is configured to vibrate ultrasonically when supplied with electric power from a power source (not shown). Since the cutting machine fixing mechanism 7 has exactly the same configuration as that of the first embodiment and the first example, the same members are designated by the same reference numerals and the description thereof will be omitted.

Next, an ultrasonic cutting machine peculiar to the second embodiment and the second embodiment will be described with reference to FIGS. 10, 11 and 12. FIG. 11 is a side view showing an ultrasonic cutting machine of a chicken shell cutting device according to the second embodiment and the second example of the present invention. FIG. 12: is a figure which expands the cutting | disconnection chip | tip and shows the ultrasonic cutting machine of the eggshell cutting device which concerns on the 2nd Embodiment and 2nd Example of this invention.

In FIG. 11 and FIG. 12, the ultrasonic cutting machine 5A includes an ultrasonic vibrator 51 which receives power from a power source (not shown) and vibrates ultrasonic waves, and the ultrasonic vibration. An exponential horn 53 provided at the output end of the child 51 for expanding the amplitude, a step horn 54A having two diameters attached to the exponential horn 53, and a step horn provided at the tip of the step horn 54A. It is composed of a cutting tip 52A provided in a direction perpendicular to the long axis of the step horn 54A.

The exponential horn 53 is
It is for expanding the amplitude and consists of a duralumin substantially conical rod-shaped body with a diameter of 56 [mm] for the thick end surface and a diameter of 12 [mm] for the thin end surface, and an amplitude expansion ratio of about 4.7. Has been adopted. The step horn 54A is made of a duralumin rod having large and small diameters, and has a thick end face having a diameter of, for example, 12 [mm], a thin end face having a diameter of 6 [mm], and an amplitude expansion ratio of 4. . The cutting tip 52A
Is a cylinder 521 that is open on one side, with the center of the bottom surface 522 as the driving point, and the open end of the side surface 523 with an edge. The cutting tip 52A has a diameter of 15 to 19 [mm],
The bottom surface 522 has a thickness of, for example, 1.5 [mm], and the side surface has a cross section 5.
It is desirable that 23 is 0.8 [mm] and the side surface 523 has a length of 10 [mm], for example.

The apparatus configuration described above is configured as follows. First, in order to determine the shape of the cutting tip 52A suitable for cutting the shell of the egg E, the cylinder 5 with one side open is used.
Eighteen kinds of cutting chips made of duralumin having different thicknesses of the bottom surface 522 and the side surface 523 and the length of the side surface 523 were prepared. The diameter of the cylinder 521 of the cutting tip 52A is
For example, it is set to 19 [mm]. In order to examine the vibration amplitude near the circumference of each cutting tip when a constant input power was applied, in each case, the longitudinal vibration amplitude near the circumference of the cutting tip at resonance was measured using a laser Doppler vibrometer. It was measured. In the measurement, the load was not applied to the cut tip, and the input power was 2 [W].

FIG. 13 is a diagram showing the results of measurement under the various conditions described above. The vertical axis shows the vertical vibration amplitude near the circumference of the bottom surface of the cutting tip, and the horizontal axis shows the thickness of the bottom surface. There is. Further, in FIG. 13, the circles have a side surface thickness of 0.
Cutting tip with 5 [mm] and a side length of 10 [mm], □ is a cutting tip with a thickness of 0.5 [mm] and a side length of 15 [mm], and ◇ is a thickness 0.5 [mm] and the side length is 20 [mm]
Cutting chip, △ mark is 0.8 [mm] thick and side surface is 10 [mm] cutting chip, and overlapping △ mark is 0.8 [m] thick
m] is a cutting tip with a side length of 15 [mm], and a ∇ mark is a cutting tip with a thickness of 0.8 [mm] and a side length of 20 [mm].

As shown in FIG. 13, the longitudinal vibration amplitude was a cutting chip (thickness of bottom surface was 1.5 [mm], thickness of side surface was 0.5 [mm], which showed the longitudinal vibration amplitude at point A in the measurement. It can be seen that [mm] and the side length 10 [mm]) are the largest. But,
Since a cutting tip under these conditions is easily broken, a cutting tip exhibiting a vertical vibration amplitude at point B (bottom thickness 1.5 [mm], side thickness 0.8 [mm] considering durability. ], The side length 10 [mm]) is considered to be suitable for the cutting tip 52A.

Next, the vibration amplitude distribution of the bottom surface 522 of the cutting tip 52A when a load is applied to the above-mentioned cutting tip 52A will be examined. Using the above cutting tip 52A, the longitudinal vibration amplitude in the radial direction of the bottom surface 522 was measured with a laser Doppler vibrometer while changing the load. When a load is applied to the cutting tip 52A, the substance contacting the cutting tip 52A was a synthetic resin column instead of the egg E. Further, a cylinder was placed and fixed on the egg fixing device 3. The chicken egg fixture 3 was fixed on a load cell placed on a jackie placed on the floor. In addition, by pushing up the jackie, each load was obtained while measuring with a load meter.

FIG. 14 is a diagram showing the measurement results under the various conditions described above, in which the vertical axis represents the vertical vibration amplitude and the horizontal axis represents the distance from the driving point of the bottom surface of the cutting tip. . In FIG. 14, the circles and solid lines show the characteristics when the load is 0, the triangles and the broken lines show the characteristics when the load is 5 [N], and the squares and the dotted lines show the characteristics when the load is 10 [N]. From FIG. 14, the vertical vibration amplitude decreases as the load increases, but the bottom surface 522 of the cutting tip 52A is reduced.
Since the oscillating node position of does not change depending on the load, it can be seen that the amplitude distribution is the same even if a load is applied.

Next, the amplitude with respect to the electric power input to the ultrasonic transducer 51 is measured. Disconnection chip 5 for input power
In order to examine the longitudinal vibration amplitude in the vicinity of the circumference of the bottom surface 522 of 2A, the longitudinal vibration amplitude of the bottom surface 522 of the cutting tip 52A at the time of resonance was measured by laser Doppler vibration when the input power was changed from 0 to 6 [W]. It was measured with a meter. Figure 1
5 is a diagram in which the measurement results under the above-mentioned conditions are described, in which the vertical axis represents the vertical vibration amplitude and the horizontal axis represents the input power.

From the figure, it can be seen that the vertical vibration amplitude increases as the input power increases. Moreover, the amplitude with respect to the load applied to the ultrasonic cutting machine is measured. Similar to the above-described measurement of the longitudinal amplitude vibration with respect to the input power, the longitudinal vibration amplitude in the vicinity of the circumference of the bottom surface 522 of the cutting tip 52A with respect to the load is set to a constant input power of 2 [W] to the ultrasonic transducer 51, and The measurement was performed with a laser Doppler vibrometer when the input load was changed in the range of 0 to 40 [N]. The substance contacting the cutting tip 52A was a synthetic resin column instead of the egg E. Further, the column was placed and fixed on the egg fixing device 3. The chicken egg fixture 3 was fixed on a load cell placed on a jackie placed on the floor. In addition, by pushing up the jackie, each load was obtained while measuring with a load meter.

FIG. 16 is a diagram showing measured values measured under the above-mentioned conditions, in which the vertical axis represents the vertical vibration amplitude and the horizontal axis represents the load. From FIG. 16, it can be seen that as the load increases, the longitudinal vibration amplitude decreases, but when it exceeds 10 [N], it tends to be saturated.

Next, the cutting time of the egg E is measured by the egg shell cutting device 1A shown in FIG. First, the chicken egg E is placed and fixed in the hole of the fixing plate 33 of the chicken egg fixture 3 with the tip end thereof facing downward (the blunt end portion facing up), and the chicken egg fixture 3 is placed at the cutting position. Next, the ultrasonic cutting machine 5 equipped with the step horn 54A is inserted into the hole of the fixing base 71 from above the fixing base 71 of the cutting machine fixing mechanism 7 to fix the fixing plate 33 of the egg fixing device 3.
The cutting tip 52A fixed to the tip of the step horn 54A is brought into contact with the blunt end portion of the chicken egg E placed and fixed on. Further, the chicken egg E can be applied with a predetermined load from the chicken egg fixture 3.

The load can be varied as follows. A load meter is provided on the jackie arranged on the floor, and the egg fixing device 3 is fixed on the load meter. With the jackie, the load meter and the egg fixing device 3 are pushed up, the load is measured by the load meter, and a predetermined load is obtained.

The measurement is performed by (i) making the load constant and changing the input power to the ultrasonic vibrator 51, and (ii) making the input power to the ultrasonic vibrator 51 constant and changing the load. It was done in two kinds, one to do and one to do. In addition, each measurement was carried out four times, and the average value was obtained. The chicken E used had the same brand and an egg weight of 64-74 [g] (shell thickness 0.4 [mm]).

FIG. 17 is a diagram showing the measured values when the load is kept constant and the input power is changed as described above. The vertical axis shows the time required for cutting eggshell and the horizontal axis shows the input power.
Each is taken. FIG. 18 is a diagram showing the measured values when the input power is kept constant and the load is changed as described above, and the vertical axis shows the egg shell cutting time and the horizontal axis shows the load. Is. It can be seen that the time required for shell cutting becomes shorter as the input power is larger than that in FIG. 17 and the load is larger than that in FIG.

However, at an input power of 20 [W] and a load of 12 [N], the eggs were cracked during cutting and could not be cut well. Also, when the input power is 6 [W] and the load is 12 [N], it is 600
[S] could not be cut even after a lapse of time. From these results, it was found that the properly cut is within the range of the measurement this time, but the input power is 20 [W] and the load is 10 [N] (the cutting time is 15 [s]).

An appropriate range of the diameter of the cutting tip 52A will be examined. Chicken eggshell cutting device 1A shown in FIG.
And the diameter of the cutting tip 52A is 15 to 25
The cutting time of the shell of the hen's egg E was measured while changing it in the range of [mm]. A constant pressure (6 [N]) is applied to the egg E, and a constant input power (10) is applied to the ultrasonic transducer 51 of the ultrasonic cutting machine 5.
[W]) was added and the device was always driven at the resonance frequency. In addition, chicken eggs of the same brand used 64-74 [g]. The measurement was performed 4 times for each diameter under such conditions, and the average value was obtained.

FIG. 19 is a diagram showing the measured values of the time required for cutting eggshells with respect to the diameter of the cutting chips as described above, wherein the time required for cutting eggshells is plotted on the vertical axis and the diameter of the cutting chips is plotted on the horizontal axis. , Respectively. From FIG. 19, the time required for cutting is that the diameter of the cutting tip 52A is 15 to 1
The cutting tip 52A is about 60 [s] at 9 [mm].
It can be seen that when the diameter exceeds 20 [mm], the length becomes sharp. In addition, when the diameter of the cutting tip 52A was 24 [mm] or more, the shell of the chicken egg E could not be cut even after 600 [s]. It is considered that this is because when the diameter of the cutting tip 52A becomes large, the contact angle between the cutting tip 52A and the shell of the egg E becomes shallow, and the ultrasonic vibration does not work effectively for cutting.

From this, it is understood that the diameter of the cutting tip 52A should be set to 15 to 19 [mm]. As described above, according to the egg shell cutting device 1A according to the second embodiment and the second example of the present invention, a relatively short time (60 [s]), no noise, and a circular shape are obtained. There is an advantage that a smooth fracture surface can be obtained.

<Modifications> The eggshell cutting device 1 according to the first embodiment and the first example described above, and the eggshell cutting device 1A according to the second embodiment and the second example.
Then, the ultrasonic cutting machine 5 is attached to the fixing table 71 of the cutting machine fixing mechanism 7.
Although the shell of the egg E fixed on the egg fixing tool 3 by being inserted into the hole is cut, the invention is not limited to this. Moreover, although one egg E is also shown as a structure in which one egg E is placed and fixed on the egg fixture 3, the invention is not limited to this. That is, you may make it like FIG.

FIG. 20 is a perspective view showing an egg shell cutting device according to a modification of the embodiment of the present invention. The egg shell cutting device 1B has a flat egg fixing device 3B capable of placing and fixing a plurality of eggs E, E, ... at a predetermined placing position with the blunt end facing upward, and is vertically movable. Fixed to the cutting machine fixing mechanism 7 provided with the fixed table 71B, and the fixing table 71B of the cutting machine fixing mechanism 7B in a state of being aligned with the placement positions of the eggs E, E, ... Of the egg fixing tool 3B. And a plurality of ultrasonic cutting machines 5B, 5B, ... A belt conveyor 9B is provided in the chicken shell cutting device 1B.

The belt conveyor 9B is adapted to accurately place the egg fixing devices 3B, 3B, ... At predetermined positions. Further, the belt conveyor 9B is adapted to convey the egg fixing tools 3B, 3B, ... And to accurately stop at the cutting position. The egg fixing device 3
B is a base plate 31B, springs 32B, ...
3B, and a hole is bored in the fixing plate 33B so that the eggs E, E, ... Can be arranged at a predetermined mounting position. Further, the spring 32B applies a predetermined pressure to the eggs E, E,
It is something to give to ... The ultrasonic cutting machine 5B is shown in FIG.
The ultrasonic cutting machine 5 shown in FIG. 2 is used and fixed to the fixing base 71 of the cutting machine fixing mechanism 7 in accordance with a predetermined mounting position of the fixing plate 33B.

The cutting machine fixing mechanism 7B includes a fixing base 71B made of a large rectangular metal plate and legs 72B, 72B, 72B, 72B in which the fixing base 71B is screwed so as to be vertically movable.
A drive mechanism 73B for rotating the legs 72B, 72B, 72B, 72B forward and backward, sensors 74B, 74B for detecting whether the egg fixing device 3B on the belt conveyor 9B has reached a cutting position, and the fixing base 71B. 75B for detecting that the lower limit cutting position has been reached, and the fixed base 7
A sensor 76B that detects whether 1B is in the standby position,
Taking in detection signals from the sensors 74B, 74B, 75B, 76B, and giving a stop command to the belt conveyor controller 91B and a reverse rotation command to the drive mechanism 73B when the egg fixing device 3B reaches the cutting position. When the fixed base 71B reaches the lower limit cutting position, the ultrasonic transducer 5
A power supply command is given to the power supply device 55B for 1B, ...
When a predetermined time has passed thereafter, the drive mechanism 7
Control device 77B which gives a forward rotation command to 3B and issues a movement command to belt conveyor control device 91B after a lapse of a predetermined time.
It consists of and.

A chicken egg shell cutting device 1B constructed in this way
Works as follows. The egg fixing tools 3, 3, ... Accurately placed on the belt conveyor 9B are the fixing bases 71.
Moved to B. The sensor 7 indicates that the egg fixing device 3B on the belt conveyor 9B has reached the cutting position.
When detected by 4B and 74B, the control device 77B sends a stop command to the belt conveyor control device 91B, and the drive mechanism 7
A reverse rotation command is given to 3B. Thereby, the drive mechanism 73
B reversely rotates the legs 72B, ... And lowers the fixed base 71B.

When the control device 77B recognizes that the fixed base 71B has reached the lower limit cutting position by the detection signal from the sensor 75B, the control device 77B causes the power supply device 55B for the ultrasonic transducers 51B ,. A power supply command is issued. When a predetermined time has elapsed, the control device 77B issues a power supply stop command to the power supply device 55B and gives a normal rotation command to the drive mechanism 73B. As a result, the drive mechanism 73B causes the legs 72B, ... To rotate in the forward direction, and the fixed base 71 rises.

Further, the control device 77B issues a movement command to the belt conveyor control device 91B after a lapse of a predetermined time after issuing the forward rotation command of the drive mechanism 73B. As a result, the belt conveyor 9B moves the egg fixing device 3B. Further, when the control device 77B detects that the fixed base 71B has reached the upper limit position (standby position) by the detection signal from the sensor 76B, the drive mechanism 73B.
Issue a rotation stop command to. By repeating the above, a large amount of chicken eggs E, ... Can be cut with less noise in a short time and with a smooth cutting surface.

[0054]

As described above, according to the egg shell cutting device of the present invention, it is possible to cut the egg shell using ultrasonic waves. Therefore, the egg shell can be cut in a short time, and There is an effect that a smooth fracture surface can be obtained without noise.

[Brief description of drawings]

FIG. 1 is a side view showing an egg shell cutting device according to a first embodiment and examples of the present invention.

FIG. 2 is a diagram showing an entire configuration of an ultrasonic cutting machine of an egg shell cutting device according to the first embodiment and the first example of the present invention.

FIG. 3 is an enlarged perspective view showing a step horn integrated with a cutting tip of an ultrasonic cutting machine of an egg shell cutting device according to a first embodiment and a first example of the present invention.

FIG. 4 is an enlarged cross-sectional view showing a cutting tip portion of the ultrasonic cutting machine of the eggshell cutting device according to the first embodiment and the first example of the present invention.

FIG. 5 is a plan view showing an enlarged part of a second step horn of the ultrasonic cutting machine of the eggshell cutting device according to the first embodiment and the first example of the present invention.

FIG. 6 is a diagram showing vibration measurement values of each step horn measured under various conditions in the first embodiment and the first example of the present invention.

FIG. 7 is a diagram showing vibration measurement values of each step horn measured under various conditions in the first embodiment and the first example of the present invention.

FIG. 8 is a diagram showing a result of measuring a cutting time of an egg E under each condition in the first embodiment and the first example of the present invention.

FIG. 9 is a perspective view showing an egg cut by the egg shell cutting device according to the first embodiment and the first example of the present invention.

FIG. 10 is a perspective view showing an egg shell cutting device according to a second embodiment and a second example of the present invention.

FIG. 11 is a side view showing the ultrasonic cutting machine of the eggshell cutting device according to the second embodiment and the second example of the present invention.

FIG. 12 is an enlarged view showing a cutting tip of an ultrasonic cutting machine for cutting eggshell according to a second embodiment and a second example of the present invention.

FIG. 13 is a diagram showing results of measurement under various conditions in the second embodiment and the second example of the present invention.

FIG. 14 is a diagram showing measurement results under various conditions in the second embodiment and second example of the present invention.

FIG. 15 is a diagram showing a measurement result when a predetermined condition is set in the second embodiment and the second example of the present invention.

FIG. 16 is a diagram showing measured values measured under a condition set to a predetermined condition in the second embodiment and the second example of the present invention.

FIG. 17 is a diagram showing measured values in the case where the load is kept constant and the input power is changed in the second embodiment and the second example of the present invention.

FIG. 18 is a diagram showing measured values in the case where the input power is kept constant and the load is changed in the second embodiment and the second example of the present invention.

FIG. 19 is a diagram showing measured values of the time required for cutting eggshells with respect to the diameter of the cutting tip in the second embodiment and the second example of the present invention.

FIG. 20 is a perspective view showing a chicken shell cutting device according to a modification of the embodiment of the present invention.

FIG. 21 is a schematic diagram showing a generated hatched chicken egg.

FIG. 22 is a schematic diagram showing a conventional chicken shell cutting device.

[Explanation of symbols]

1,1A, 1B Eggshell cutting device 3,3A, 3B Chicken egg fixture 5,5A, 5B ultrasonic cutting machine 7,7A, 7B Cutting machine fixing mechanism 31,31B base plate 32, 32B spring 33, 33B fixed plate 51,51B ultrasonic transducer 52,52A cutting tip 53 Exponential horn 54 Cutting chip integrated step horn 54A step horn 71, 71B fixed base 72,72B leg

Claims (4)

[Claims] 1. An egg shell cutting device for cutting a blunt end of an egg, wherein the hen egg can be placed and fixed with the blunt end of the egg facing upward, and a predetermined pressure is supplied to the egg during cutting. And an egg fixing tool that can be placed at the cutting position, and an ultrasonic wave that can transmit the ultrasonic vibration of the ultrasonic transducer to the cutting tip and cut the blunt end of the egg on the egg fixing tool that is placed at the cutting position. A cutting machine and the ultrasonic cutting machine can be moved up and down, and at the time of cutting an egg, the cutting tip can be fixed to the blunt end of the egg so that the ultrasonic cutting machine can be fixed. A chicken eggshell cutting device comprising a mechanism. 2. The ultrasonic cutting machine, wherein an ultrasonic vibrator vibrates ultrasonic waves when supplied with electric power from a power source, and an exponential horn that is provided at an output end of the ultrasonic vibrator and expands the amplitude. And a step horn integrated with a cutting tip attached to the exponential horn. 3. The ultrasonic cutting machine, wherein an ultrasonic vibrator that receives electric power from a power source to vibrate ultrasonic waves and an exponential horn that is provided at an output end of the ultrasonic vibrator and expands the amplitude. 2. A step horn attached to the exponential horn, and a cutting tip provided at the tip of the step horn and provided in a direction perpendicular to the long axis of the step horn. Chicken eggshell cutting device. 4. The cutting tip has a diameter of 15 to 19 [m
The egg shell cutting device according to claim 2 or 3, characterized in that the edge angle of the tip is approximately 20 degrees.