JP4376115B2 - Boiled egg shell cracking device - Google Patents

Description

  The present invention relates to a boiled egg shell cracking device, and more particularly to a device that applies a shock in a chute while vibrating (oscillating) a boiled egg and cracks the shell. The present invention relates to a cracking device for boiled egg shells that can be adjusted to the optimum one according to (size, freshness, processing conditions, etc.).

  Various methods are known as means for continuously forming a crack in an egg shell with a shelled jar in order to peel and remove the egg shell with a jar. For example, Patent Document 1 describes a method of crushing and cracking a shell while moving the outer peripheral surface of a shallow frame-shaped rotating cylindrical body in a circumferential direction with a shelled bowl, and Patent Document 2 describes a method with a shell. A method is described in which the shell is cracked and cracked while the egg is transferred in a shallow frame-shaped rotating cylinder in the axial direction.

However, any of the above conventional methods is struck with a frame-like one, so that the impact is too strong, or the shell is deeply dented and the eggshell membrane between the eggshell and the egg white is unnecessarily destroyed. In the shell peeling and removal action, the shell cannot be peeled off smoothly, and in particular, the shell fragments may scatter and pierce the egg white, which may enter the product and cause product quality degradation or customer complaints. There is.
In addition, since the conventional method uses a frame-shaped cylindrical body with a bar installed, dirt and shell pieces adhering to the bar enter into a narrow gap and are difficult to remove in normal cleaning operations, and are always caused by bacterial contamination. There is a problem of being at risk of problems. In view of these current situations, the present invention is to first improve the above-described defects and realize a boiled egg shell cracking device that facilitates the cleaning operation. Create an egg transfer conveyor with a transfer piece that transfers eggs in the direction, and vibrate this chute at various angles in the width direction to collide the egg with the wall surface and crack the egg shell A device that can be used was proposed as Japanese Patent Application No. 2003-157473. At this time, as a vibration means, the known reciprocating air cylinder is used to vibrate (sway) the above-mentioned chaff-shaped chute and crack the egg by contacting the chute side wall and the transfer piece. Completed as a device.
Japanese Patent Laid-Open No. 5-19211 (pages 4 to 5, FIGS. 1 to 4) JP-A-52-79069 JP 57-1471 A

However, the boiled egg cracking device proposed in Japanese Patent Application No. 2003-157473 is difficult to adjust the frequency and amplitude to the desired values at the same time. For example, even if the frequency is increased, the amplitude is the stroke of the air cylinder. It remains limited and remains constant, and it turns out that there is a disadvantage that it cannot be increased or decreased separately to obtain the optimal frequency and amplitude tailored to the boiled egg condition and is difficult to fine tune during manufacturing did. Therefore, as a result of further research, the present inventor, as a vibration generation technique, a known vibration generation comprising a pair of motors capable of electrically controlling the number of rotations and a pair of rotational vibration shafts connected to the motor by a belt. Considering that the above problem can be solved by using means (the above-mentioned patent document), a structure that can freely increase or decrease the weight for deviating the center of gravity of the rotational vibration shaft from the center is incorporated. Thus, the present invention has been completed.
That is, an object of the present invention is to provide a boiled egg shell cracking device that can be freely adjusted to the optimum frequency and amplitude for cracking into the egg shell.

In order to achieve the above object, an egg shell cracking device according to the present invention is an egg having a transfer piece for transferring an egg along the longitudinal direction of a chute having a flat cross-section and a flat inner wall surface. It is provided with a transfer conveyor and an egg boiled for against the chute in the width direction are arranged at a desired angle to the vibrating table on via the vibration means housing portion supported by a spring capable of linearly vibrating And a pair of motors having rotating shafts rotating in opposite directions to each other below the vibration table, and the back surface of the vibration table is connected to each of the rotation shafts by a belt. The rotary vibration shaft is supported by a pair of rotational vibration shafts, and the rotational vibration shafts are formed so as to be freely mountable with weights that deviate from the center of gravity.
In this case, the weight is substantially flat and can be mounted on one side of the rotational vibration shaft.
With this configuration, when it is necessary to increase or decrease the vibration frequency, it is only necessary to increase or decrease the number of rotations of the motor by operating the switch, and when increasing the amplitude, by increasing the number of attached weights, The desired amplitude can be easily obtained.

The boiled egg shell cracking device of the present invention has a structure in which the number of rotations of the motor is set to the frequency of the vibration table and the amplitude is adjusted by increasing or decreasing the weight attached to the rotating vibration shaft. It is possible to easily obtain the optimum frequency and amplitude for cracking according to the size and heat treatment conditions. Accordingly, it is possible to increase the yield and production efficiency of non-husk eggs without shells, and to provide low-cost products.

The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 is a side sectional view showing an example of a boiled egg shell cracking apparatus according to the present invention, and FIG. 2 is a plan view taken along the line XX of FIG. 3 is a schematic front view of FIG. 1, and FIG. 4 is a perspective view showing an example of the present invention (the egg transfer conveyor is omitted). The egg shell cracking apparatus 1 according to the present embodiment has a cross-sectional character with a thickness of 2 mm made of stainless steel on a vibration table 3 via a vibration means housing 6 supported by a spring 13 as shown in FIG. A bowl-shaped chute 2 is provided. In the chute 2, a transfer conveyor 5 in which stainless steel transfer pieces 4, 4, 4,... Are arranged at equal intervals in the longitudinal direction is provided so as to be driven in one direction by a motor (not shown). . In this embodiment, the inner width of the chute 2 is about 70 mm, the length is about 1000 mm, and the distance between the transfer pieces 4, 4... Is about 100 mm, and the eggs E, E, E. The long diameter is configured to allow rolling contact with the inner wall surface of the chute 2 or the like with sufficient margin during transfer.

Further, the vibration table 3 is a pair of motors M, M provided with rotating shafts 7, 7 that are accommodated in the accommodation unit 6 of the vibration means and that rotate in opposite directions, and are connected to each other via belts 8, 8. Rotating vibration shafts 9 and 9 are fixed.
The rotary vibration shafts 9 and 9 are provided with tightening portions by bolts 11 and nuts 12 so that the weights 10, 10... With this structure, the chute 2 on the vibration table 3 is vibrated by driving the motors M and M due to vibration, and the vibration frequency of the vibration table 3 and the like is changed by changing the rotation speed of the motors M and M. Further, when adjusting the amplitude, the number of weights 10 and 10 attached to the rotary vibration shafts 9 and 9 can be easily increased or decreased.

Therefore, when the egg shell cracking device 1 of the embodiment having the above structure is used by being incorporated into the egg shelling process, the side of the start end of the chute 2 of the egg shell cracking device 1 is used. An egg supply conveyor (not shown) is connected to the shell, and a shell peeling device (not shown) is disposed on the terminal end side.
In this embodiment, when the chute 2 is arranged on the vibration table 3, the case where the vibration direction is arranged so as to be applied in the width direction of the chute 2 (arrow A direction) is shown in FIG. Of course, the chute 2 may be arranged so that the vibration is applied at a desired angle with respect to the width direction of the chute 2 if necessary.

Next, the operation of the embodiment of the present invention will be described. Since the embodiment of the present invention is configured as described above, the boiled egg E supplied to the starting end of the bowl-shaped chute 2 by the egg supply conveyor by the boiled egg not shown is moved inside the chute 2 by the egg transfer conveyor 5. It is transferred for about 10 seconds. At this time, the chute 2 is adjusted to an optimum size within a frequency range of 10 to 25 times / second and an amplitude of 8 to 10 mm depending on the state after the processing of the boiled egg. As a result, the boiled eggs E, E, E... Transported in the chute 2 collide with the inner wall surface of the chute 2 and the transfer piece 4 by vibration in the width direction of the chute 2 (arrow A in FIG. 3). Repeatedly, a desired state in which fine cracks are formed on the entire shell without being subjected to impact tapping that is too strong only by the tapping action (without destroying the eggshell membrane).
At that time, check the state of cracking, increase the number of motors M, M to increase the frequency only, increase the number of weights 10, 10, ... to increase the amplitude. Is freely adjusted by.

It is side sectional drawing which shows an example of the boiled egg shell cracking apparatus which concerns on this invention. FIG. 2 is a plan view taken along the line XX of FIG. FIG. 2 is a schematic front view of FIG. It is a perspective view which shows an example of this invention.

Explanation of symbols

1 Boiled egg shell cracking device
2 Shoot
3 Shaking table
4 Transfer piece
5 Egg transfer conveyor
6 Storage for vibration means
7 Rotating axis
8 belt
9 Rotating vibration shaft
10 weights
11 volts
12 Nut
13 Spring
14 frame
E Boiled egg
M motor

Claims (2)

It is provided with an egg transfer conveyor that androgynous a transfer means for transferring the eggs along the interior of the longitudinal section凵字gutter-shaped chute having a flat inner wall surface, and for the chute in the width direction of the desired A boiled egg shell cracking device disposed on a vibrating table via a vibrating means receiving portion supported by a spring that can be vibrated linearly at an angle of A pair of motors having a rotating shaft that rotates, and a back surface of the vibration table is pivotally supported by a pair of rotating vibration shafts connected to each of the rotating shafts by a belt, A boiled egg shell cracking device characterized in that a weight that deviates from the center of gravity is detachably formed. 2. The boiled egg shell cracking device according to claim 1, wherein the weight is formed in a substantially flat plate shape so that the weight can be mounted on one side surface of the rotational vibration shaft.

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