JP2001340065A - Automatic eggshell-cracking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic eggshell-cracking device which works as follows: making a notch almost vertically into the vicinity of the center of an egg being in a horizontal posture, with a rotary blade; putting a shell-opening pick into the thus cut portion and making the eggshell open to both sides to crack the eggshell; and thereby, preventing the eggshell cracked opening from becoming relatively smaller than the larger diameter of the center of the eggshell regardless of the egg size so that the egg contents soon fall from the cracked opening and is taken out of the eggshell. SOLUTION: This automatic eggshell-cracking device has the following parts: an egg holder 2 which rotates nearly around the horizontal axis and holds, from the vertical side, the center portion of an egg (a) in a horizontal posture on an egg receiver 21; a sensor 3 which detects the dimension of the egg (a) held by the egg holder 2; a rotary blade 4 which rotates nearly around the horizontal axis, and the rotating center of which moves interlockingly with the above sensor 3 to cut into a given depth part of the outer periphery of the predetermined portion in the vicinity of the center of the egg projecting from the side face of the egg holder 2; an eggshell-opening pick 5 which is arranged on the side face of the rotation passage of the egg holder 2, inserted into this notch of the egg (a), and makes the eggshell open to crack the eggshell. Also, the subject device has such a mechanism that the egg holder 2 and the egg-opening pick 5 are respectively movable to both sides after inserted into the notch of the egg (a).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic egg breaking device for automatically breaking an egg shell to take out the contents of the egg, and more particularly, to a side portion of a shell near the center of a sideways egg with a rotary blade. The present invention relates to an automatic egg splitting device that cuts substantially vertically, inserts a shell opening claw into the cut, opens an egg shell on both sides, breaks the egg shell, and drops and removes the contents of the egg.

[0002]

2. Description of the Related Art The applicant of the present invention mounts large and small eggs in an egg receiving hole having a constant diameter, and partially rotates a part of the lower shell of the egg protruding from the lower portion of the egg receiving hole with a rotary blade. Cut into the notch, insert a shell opening claw into this notch, open the lower side of the egg shell downward, split the egg shell, drop the egg contents from the cracked lower side, and take out the egg apparatus"
Filed a patent application on May 18, 1998 (Japanese Patent Application No. 10-1).
53766). This patent application (Japanese Patent Application No. 10-1)
53766) was patented on July 16, 1999 (No. 29).
No. 52772).

[0003]

In the above-mentioned patent application (Japanese Patent Application No. 10-153766), the lower part of the shell of the egg is opened downward regardless of the size of the egg, and the egg shell is cracked. However, if the egg is large, the diameter of the lower part of the egg is relatively small compared to the large diameter at the center, and as a result, the contents of the egg fall from the broken part. There was an inconvenience that it did not come out and it took time. In this case, depending on the size of the egg,
Although the size of the egg receiving hole may be changed, there is another problem that the apparatus becomes complicated if a mechanism for changing the size of the egg receiving hole is used each time.

SUMMARY OF THE INVENTION In view of the above problems, the present invention has been made in order to solve the problems, and an object of the present invention is to form a part of a shell near the center of a sideways egg by a rotary blade. Cut the egg shell approximately vertically, insert the shell opening claw into this notch, open the egg shell on both sides, and split the egg shell, so that the diameter of the crack becomes the central large diameter regardless of the size of the egg An object of the present invention is to provide an automatic cracking device that can prevent the contents of an egg from dropping from a crack immediately and prevent the egg from becoming relatively small.

[0005]

In order to achieve the above object, the present invention provides an egg grasper which rotates about a substantially horizontal axis and grasps a central portion of a laterally oriented egg on an egg tray from above and below,
A sensor that detects the size of the egg gripped by the egg gripper is provided, and a part of the outer periphery of a predetermined location near the center of the egg that rotates about a horizontal axis and protrudes from the side of the egg gripper is provided to the sensor. A rotating blade is provided in which the center of rotation moves in conjunction with it and cuts at a certain depth, and an egg shell opening claw that inserts into this cut to open the egg shell and break the egg shell is provided on the side of the egg gripper on the rotating path. And means for moving the egg gripper and the eggshell opening claw to both sides after insertion into the incision of the egg.

[0006] Here, an egg supply conveyor for supplying eggs in a lateral state on the egg tray is provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically based on embodiments of the invention shown in the drawings. Here, FIG. 1 is an overall front view of the automatic egg breaking device, FIG. 2 is a schematic plan view of the automatic egg breaking device, FIG. 3 is a schematic sectional view of a rotary blade portion, and FIG. FIG. 5 is a schematic cross-sectional view of the egg grasper and the eggshell opening claw, FIG. 6 is a schematic cross-sectional view of the egg grasper and the eggshell opening claw after insertion, and FIGS.
(E) is an explanatory view of the operation of cutting the egg by the rotating blade.

In the figure, an automatic egg splitting device 1 is held by an egg gripper 2 which rotates about a substantially horizontal axis and grips a central portion of a lateral egg a on an egg tray 21 from above and below. A sensor 3 for detecting the size of an egg a, which rotates around a substantially horizontal axis and rotates a part of the outer periphery of a predetermined location near the center of the egg a protruding from the side of the egg gripper 2 in conjunction with the sensor 3 It mainly comprises a rotary blade 4 whose center moves and cuts at a certain depth, and an egg shell opening claw 5 which inserts into the cut to open the shell of the egg a and break the shell of the egg a. Further, the automatic egg splitting device 1 is appropriately provided with an egg supply conveyor 6 and a shell discharge chute 7.

A vertical plate 11 is provided on the upper side of the main body of the automatic egg splitting device 1. On the surface side of the vertical plate 11, an egg gripper 2, a sensor 3, a rotary blade 4, an eggshell opening claw 5, an egg A supply conveyor 6, a shell discharge chute 7, and the like are arranged. On the back side of the vertical plate 11, an egg gripper drive motor 22d, a rotary blade drive motor 43, and the like described later are arranged. Below the front side of the vertical plate 11, there is provided a mounting table 12 having an adjustable mounting height for mounting a container for storing the contents of the eggs a split by the automatic egg splitting device 1. A caster 13 is attached to the lower end of the main body of the automatic egg breaking device 1 so as to be movable.

The egg gripper 2 is a device for gripping a central portion of a laterally oriented egg a on an egg tray 21 from above and below, and is a turntable attached to the tip of an egg gripper rotary shaft 22 which rotates about a substantially horizontal axis. A plurality, for example, four in the drawing, are attached at equal intervals around the inner surface side of 22a, that is, the side facing the vertical plate 11, and rotates counterclockwise.

The egg tray 21 is a part for temporarily holding the eggs a supplied from the egg supply conveyor 6 in a horizontal state.
It has a concave shape so that the lower surface of the egg a can be held. The egg tray 21 is provided on the supply tip side of the egg supply conveyor 6.

The central portion of the egg tray 21 is connected to an upper gripping claw 23a and a lower gripping claw 2 of the rotating egg gripper 2 which will be described later.
A gap is formed so that 3b can pass from the lower side to the upper side, and the laterally oriented egg a supplied and held in the egg tray 21 after the upper gripping claw 23a rotates from the lower side to the upper side and passes therethrough. Are scooped by the lower gripping claw 23b rotating from the lower side to the upper side and gripped by the egg gripper 2.

The proximal end of the rotary shaft 22 for the egg grasper is rotatably supported by a bearing 22b provided on the back side of the automatic egg breaking device 1 through the vertical plate 11 horizontally. A gear 22c is attached to the base end of the egg gripper rotary shaft 22 that is supported by the bearing 22b.

The gear 22c has an egg gripper drive motor 22
d, the driving force of the egg grasper drive motor 22d is applied to the endless chain 22e.
e and transmitted to the gear 22c through the rotary shaft 2 for the egg gripper.
2 is rotated about a substantially horizontal axis.

As will be described later, the egg gripper driving motor 22d simultaneously drives the egg supply conveyor 6, and the egg gripper 2 and the egg supply conveyor 6 are driven together by the same egg gripper driving motor 22d. Then, the timing of the egg a supplied from the egg supply conveyor 6 to the egg tray 21 and the timing of gripping the egg a on the egg tray 21 with the rotating egg gripper 2, that is, the upper gripping claw of the egg gripper 2 After passing through the egg tray 21, the lower gripping claw 23 b is moved to the egg tray 21.
Before the egg a is supplied to the egg tray 21.

The egg gripper 2, which grips the central portion of the laterally oriented egg a from above and below, has two left and right sides that are vertically opened and closed by gripping claw operating rods 23 abutting on an outer peripheral side surface of an uneven curved surface 25a of an operating cam 25 described later. It is composed of an upper gripping claw 23a and two left and right lower gripping claws 23b. The tip side of the upper gripping claw 23a is formed in a concave shape so as to easily pinch the upper surface side of the central part of the egg a. Further, the tip side of the lower gripping claw 23b is formed in a concave shape so as to easily sandwich the lower surface side of the central part of the egg a.

The base ends of the upper gripping claw 23a and the lower gripping claw 23b are pivotally supported by a turntable 22a attached to the tip of a rotating shaft 22 for an egg gripper so as to be able to open and close in the vertical direction. The upper gripping claw 23a is provided at the base end side of the upper gripping claw 23a.
The end of a gripping claw operating rod 23 that opens and closes the lower gripping claw 23b is connected.

With the gripping claw operating rod 23, the base ends of the upper gripping claw 23a and the lower gripping claw 23b are connected to the upper gripping claw 23a.
The lower gripping claw 23b is interlockingly connected so that the lower gripping claw 23b opens in conjunction with the lower side when a opens upward, and the lower gripping claw 23b closes in conjunction with the upper side when the upper gripping claw 23a closes downward.

A spring 23c is attached to the base ends of the upper gripping claw 23a and the lower gripping claw 23b so as to bias the egg a. One end of the spring 23c is connected to the base end of the upper gripping claw 23a, and the other end of the spring 23c is connected to the lower gripping claw 23a.
b. The upper gripping claw 23a and the lower gripping claw 23b are constantly urged by the spring 23c to the side where the egg a is gripped, that is, the upper gripping claw 23a is directed downward and the lower gripping claw 23b is directed upward.

The egg gripper 2, which grips the central portion of the laterally oriented egg a from above and below, has a gripping claw operating roller 2 which comes into contact with a convex curved surface 25b formed on a lower surface of an operating cam 25 to be described later.
4 allows the structure to move obliquely upward toward the inside, that is, toward the vertical plate 11 side.

The base ends of the upper gripping claw 23a and the lower gripping claw 23b of the egg gripper 2 are connected to the inner surface of the turntable 22a by the pivot shaft 2.
4a, it is rotatably attached in a direction perpendicular to the rotation direction of the egg gripper 2. Further, a return spring 24b for returning the egg gripper 2 that has been moved diagonally upward to the original state is attached.

At the base end of the upper gripping claw 23a and the lower gripping claw 23b of the vertical plate 11, a gripping claw operating roller 24 is provided which comes into contact with a convex curved surface 25b formed on a lower surface of an operating cam 25 to be described later. ing. This gripping claw operating roller 24
Abuts on the convex curved surface 25b, so that the eggshell opening claw 5
After inserting the egg a into the notch of the egg a, the egg gripper 2 gripping the central part of the egg a is movable obliquely upward toward the vertical plate 11 side and opened to break the egg a.

The operating cam 25 operates the gripping claw operating rod 23 for opening and closing the upper gripping claw 23a and the lower gripping claw 23b, and also operates the gripping claw operating roller 24. The outer peripheral side surface of the operating cam 25 has an uneven curved surface. The operation cam 25 has a lower surface formed with a convex curved surface 25b.

An uneven curved surface 25a on the outer peripheral side surface of the operation cam 25
While the gripping claw operating rod 23 makes a round while making contact with the gripping claw operating rod 23, the gripping claw operating rod 23 fluctuates by the concave and convex curved surface 25a to open and close the upper gripping claw 23a and the lower gripping claw 23b.

The egg gripper 2 rotating about the horizontal axis is rotated downward, and the gripper operating roller 2 of the egg gripper 2 is moved downward.
4 is a convex curved surface 25b formed on the lower surface of the operation cam 25.
, The egg gripper 2 gripping the central portion of the egg a is configured to move obliquely upward and open toward the vertical plate 11 side.

The operation cam 25 is fixed to the vertical plate 11 on the outer peripheral side of the egg gripper rotating shaft 22. The operation cam 25 and the rotating shaft 22 for the egg gripper are not connected, and the operation cam 25
Has a through hole in the center thereof, and the rotation shaft 22 for the egg grasper rotates in this through hole.

The sensor 3 is a device that detects the size of the egg a that has been rotated while being gripped by the egg gripper 2 and has a contact-type structure that detects when the tip 31 of the sensor 3 abuts on the egg a. Tip 31 of sensor 3 abutting on egg a
Is formed in an arcuate concave shape.

The base end of the sensor 3 is on the same level as the center of rotation of the rotary blade 4, and the sensor 3 in contact with the egg a moves, so that the sensor 3 always has a constant depth of 2 mm regardless of the size of the egg a.
The center of rotation of the rotary blade 4 is moved in conjunction with the movement of the sensor 3 so as to cut at a depth of.

That is, the base end side of the sensor 3 is attached to an operating shaft 32 provided on the outer periphery of the rotary shaft 41 of the rotary blade 4 so as to be rotatable around a horizontal axis. A rotating shaft 41 is provided inside the operating shaft 32, and the operating shaft 32 and the rotating shaft 41 are provided.
Is attached to the lower side of a swing plate 42, which will be described later, and moves integrally by the swing of the swing plate 42.

A weight 33 is mounted on the opposite side of the sensor 3 with the operating shaft 32 interposed therebetween. When the weight 33 causes the tip 31 of the sensor 3 not to be in contact with the egg a, the tip 31 of the sensor 3 It rotates upward and returns to the contact standby position. Further, the contact standby position stopper 34 is provided with a protective cover 4 to be described later so that the tip 31 of the sensor 3 rotated upward stops at the contact standby position.
4 is provided on the side surface.

The rotary blade 4 is rotated about a substantially horizontal axis, and a part of the outer periphery of a predetermined portion near the center of the egg a protruding from the side of the egg gripper 2 is rotated in conjunction with the sensor 3 to rotate around the center. Is a device that moves and cuts at a certain depth.
The operating shaft 32 of the sensor 3 is mounted so as to protrude horizontally from the lower surface of the swing plate 42. The vertical plate 11 at the portion where the rotating shaft 41 and the operating shaft 32 protrude is formed with an arc-shaped notch hole 11a, and the rotating shaft 41 and the operating shaft 32 pass through the notch hole 11a of the vertical plate 11. It protrudes toward the surface of the vertical plate 11.

The oscillating plate 42 is attached to the back side of the vertical plate 11. That is, the swinging plate 42 has a connection rotating shaft 42a on the upper surface side thereof rotatably mounted on the back surface of the vertical plate 11, and the swinging plate 42 is centered on the connecting rotating shaft 42a like a pendulum. The rotary blade 4 and the sensor 3 which are oscillated and attached to the lower side of the oscillating plate 42 can move in the front-rear direction with respect to the egg gripper 2 which is rotated by the oscillating motion of the oscillating plate 42. .

A rotary blade driving motor 43 is mounted on the rear side of the connecting rotary shaft 42a on the upper side of the swinging plate 42 on the back side of the vertical plate 11, and the driving force of the rotary blade driving motor 43 is Pulley 43 provided on the back side of 11
a, the belt 43b, the pulley 43c, the rotating shaft 41 and the like are transmitted to the rotating blade 4 to rotate the rotating blade 4.

A protective cover 44 is attached to the outer peripheral side of the rotary blade 4. The protective cover 44 covers portions other than the portion where the egg a is cut, and is prevented from being injured by the rotating blade 4 during rotation.

The egg shell opening claw 5 is inserted into a vertical cut of the egg a by the rotary blade 4 to open the shell of the egg a to break the shell of the egg a. It is provided on the side of the rotating path of the container 2. The eggshell opening claw 5 and the rotary blade 4 are located in the same vertical plane.

After the eggshell opening claw 5 is inserted into the notch of the egg a, it moves obliquely upward and outward to open and split the egg a. At this time, the egg gripper 2 that simultaneously grips the central portion of the egg a also moves obliquely upward toward the inside, that is, toward the vertical plate 11, and the eggshell opening claw 5 cooperates with the egg gripper 2 to open the egg a on both sides. It is a mechanism to divide.

The eggshell opening claw 5 is rotatable by a pivot shaft 53 with its upper end directed outwardly below a fixed plate 52 at the tip of a fixed shaft 51 that penetrates the center of the rotating shaft 22 for the egg gripper. It is attached vertically upward to the inside of the pivotally supported operating rod 54, that is, to the lower end bent toward the vertical plate 11.
The pivot 53 is provided with a return spring 53a for returning the operating rod 54, which can move obliquely upward, to its original position.

The fixed shaft 51 is not connected to the rotating shaft 22 for the egg gripper, and the rotating shaft 22 for the egg gripper rotates around the outer periphery of the fixed shaft 51. The base end of the fixed shaft 51 passes through the vertical plate 11 and is fixed to the bearing 22b.

A pressing piece 54a is formed inside the upper side of the operating rod 54 of the eggshell opening claw 5, that is, on the side facing the vertical plate 11 side. An eggshell opening claw operating piece 55 that presses the pressing receiving piece 54a during rotation is protrudingly attached to the outer surface of the rotating turntable 22a. The eggshell opening claw operating piece 55 is attached to the opposite side, that is, the outer surface of the turntable 22a at the mounting position of each egg gripper 2 attached to the inner side of the turntable 22a.

The eggshell opening claw operating piece 55 projecting from the outer surface of the rotating turntable 22a comes into contact with the pressing receiving piece 54a on the upper side of the operating rod 54 of the eggshell opening claw 5 and faces outward. By pressing, the operating rod 54 moves the upper pivot 53
As a center, the lower eggshell opening claw 5 is configured to move outward and open.

The egg supply conveyor 6 is a conveyor that arranges the eggs a placed in an irregular state during transportation in a horizontal direction and supplies the eggs a to the egg receiver 21. In the egg supply conveyor 6, a plurality of rollers 61 for placing the eggs a in a horizontal direction are connected by an endless chain (not shown). A gear 63 is attached to the base end of the drive shaft 62 that circulates the endless chain. The gear 63 is engaged with an endless chain 22e interlocked with the egg gripper drive motor 22d.

For this reason, the roller 61 is configured to circulate through the endless chain 22e, the gear 63, and the drive shaft 62 by driving the egg gripper drive motor 22d, and the egg supply conveyor 6 and the egg gripper 2 are driven. Are driven in conjunction with each other by the same egg gripper drive motor 22d.

Each of the rollers 61 is formed such that its rotation-side peripheral surface has a concave curved surface similar to a gentle curved surface on the minor diameter side of the egg a. Each roller 61 is moving while rotating with the egg a placed thereon, and the egg a placed in an irregular state on each roller 61 resembles a gentle curved surface on the minor diameter side of the egg a. By rotating, that is, rotating, the concave peripheral side surface of each roller 61, the rollers 61 are aligned laterally and sent to the egg tray 21 side.

The shell discharge chute 7 is a passage for discharging the broken shell of the egg a, and is attached to the lower side of the eggshell opening claw 5 obliquely downward. The broken shell of the egg a falls through the shell discharge chute 7 and is discharged into a shell storage container (not shown) installed outside.

Next, the operation based on the configuration of the embodiment of the present invention will be described below. When automatically breaking the egg a using the automatic egg breaking device 1, the egg gripper drive motor 22d and the rotary blade drive motor 43 are operated. When the egg gripper drive motor 22d operates, each egg gripper 2 connected to the turntable 22a rotates around a horizontal axis, and when the rotary blade drive motor 43 operates, the rotary blade 4 rotates.

By the way, when the egg gripper drive motor 22d is operated, the egg supply conveyor 6 linked to the egg gripper drive motor 22d via the drive shaft 62, the gear 63 and the endless chain 22e is also operated. Then, supply of the egg a toward the egg receiver 21 on the tip side is started.

At this time, each of the eggs a placed on the egg supply conveyor 6 in an irregular state is rotated by the respective rollers 61 while being transported toward the egg receiver 21 on the tip side.
The eggs are sent out to the egg tray 21 from the end thereof in a state of being placed sideways. The egg a is supplied to the egg tray 21 and held by the egg tray 21 after the upper gripping claw 23a of the egg gripper 2 rotates upward from the lower side and passes through.

The horizontal egg a sent out to the egg tray 21
While the egg gripper 2 rotating around the horizontal axis is rotating from the lower side to the upper side, the uneven curved surface 2 of the operation cam 25
The central part of the egg a is gripped by the upper gripping claw 23a and the lower gripping claw 23b of the egg gripper 2 opened up and down by the gripping claw operating rod 23 abutting on 5a.

That is, the upper gripping claw 23a of the egg gripper 2
After passing through the egg tray 21, the lateral egg a supplied onto the egg tray 21 is scooped from the lower side by the opened lower gripping claw 23 b and placed on the concave portion of the lower gripping claw 23 b. The egg gripper 2 on which the egg a is placed on the lower gripping claw 23b is rotated while the egg gripper 2 rotates.
The upper gripping claw 23a and the lower gripping claw 23b that have been opened are closed by the gripping claw operating rod 23 that abuts on the central gripping nail 23a and the lower gripping claw 23b. It is gripped by the gripper 2.

The egg gripper 2 gripping the central part of the egg a rotates around the horizontal axis and reaches near the rotary blade 4. When rotating near the rotary blade 4, the egg a gripped by the egg gripper 2 is placed on the concave tip 31 of the sensor 3 provided near the rotary blade 4 and located at a predetermined contact standby position. And the size of the egg a is detected by the sensor 3 (FIG. 7).
(See (A) and (B)).

That is, when the egg “a” gripped by the egg gripper 2 comes into contact with the tip 31 of the sensor 3, the rocking plate 42 on which the sensor 3 and the rotary blade 4 are mounted on the lower side is moved. rocked by the sensor 3 pushed by a,
The sensor 3 and the rotary blade 4 move backward.

As described above, when the egg a comes into contact with the sensor 3, the sensor 3 and the rotary blade 4 move rearward, but the operating shaft 32 on the base end side of the sensor 3 that comes into contact with the egg a.
Is the same as the center of rotation of the rotary blade 4, the distance from the center of rotation of the rotary blade 4 to the surface of the egg a is constant irrespective of the size of the egg a.
Regardless of the size, it is possible to cut at a constant depth, for example, a depth of 2 mm.

The egg a in contact with the tip 31 of the sensor 3 is
When the egg gripper 2 that grips the egg a rotates, the egg a rotates in a state in which the egg a contacts the tip 31 of the sensor 3. At this time, the sensor 3 in which the egg a has contacted the tip 31
While swinging and moving backward, the tip 31 side which comes into contact with the egg a around the operation shaft 32 also rotates clockwise in FIG. 7, and the distance from the rotation center of the rotary blade 4 to the surface of the egg a Is kept constant.

A part of the outer periphery of a predetermined portion near the center of the egg a protruding from the side of the egg gripper 2 is rotated around a horizontal axis after the egg a comes into contact with the tip 31 of the sensor 3. Cutting is started vertically by the blade 4, and cutting by the rotary blade 4 is continued until the egg a rotates and separates from the tip 31 of the sensor 3. During this time, the rotary blade 4 cuts the egg a while performing a rocking motion of moving backward and moving forward afterward (see FIGS. 7B to 7E).

The egg a whose part of the outer periphery of a predetermined portion near the center protruding from the side of the egg gripper 2 is cut vertically by the rotary blade 4 continues to rotate further, and the lower side in the rotation direction. And reaches the attachment position of the eggshell opening claw 5 provided in the same vertical plane as the rotary blade 4, and the eggshell opening claw 5 is held at the vertical cut point of the egg a which is gripped and rotated by the egg gripper 2. Are inserted relatively.

On the other hand, when the egg a, which has been in contact with the tip 31 of the sensor 3, rotates and separates, the sensor 3 is rotated counterclockwise by the weight 33 with the tip 31 side upward about the operating shaft 32. It hits the contact standby position stopper 34 and stops at a predetermined standby position.

The eggshell opening claw 5 is placed at the vertical cut of the egg a.
When the egg a gripped by the egg gripper 2 is further rotated after the egg is inserted, the eggshell opening claw operating piece 55 protruding from the outer surface of the turntable 22a of the rotating egg gripper 2 is moved by the eggshell opening claw. No. 5 is pressed against the pressing rod 54a on the upper side of the operating rod 54 and pressed outward. And the eggshell opening claw operating piece 5
When the pressing member 5 presses the pressing piece 54a outward, the operating rod 54 opens the eggshell opening claw 5 provided at the lower portion with the upper pivot 53 as the center, and moves obliquely upward toward the outer side. .

Similarly, after the eggshell opening claw 5 is inserted into the cut portion of the egg a and the egg a gripped by the egg gripper 2 further rotates, the egg gripper 2 rotating around the horizontal axis is moved downward. To rotate the gripper operating roller 2 of the egg gripper 2
4 is a convex curved surface 25b formed on the lower surface of the operation cam 25.
Abut. When the gripping claw operating roller 24 comes into contact with the convex curved surface 25b of the operating cam 25, the egg gripper 2 gripping the central portion of the egg a is moved obliquely upward toward the vertical plate 11 and opened.

The egg gripper 2 which is opened by being movable diagonally upward
When the egg gripper 2 rotates and the gripping claw operating roller 24 separates from the convex curved surface 25b formed on the lower surface of the operating cam 25, the egg returns to its original state by the return spring 24b. Similarly, the eggshell opening claw 5 that is opened by being moved diagonally upward is rotated by the rotation of the egg grasper 2 and the eggshell opening claw operating piece 55 is pressed by the pressing receiving piece 54.
When it is separated from a, it returns to the original state by the return spring 53a.

In this manner, after the eggshell opening claw 5 is inserted into the cut of the egg a, the egg grasper 2 and the eggshell opening claw 5 are moved to open on both sides, respectively, so that the shell of the egg a is opened on both sides. To break the shell of egg a.

Since the egg a is always split near the center of the large diameter, the contents of the egg a can be smoothly discharged from the broken shell and taken out. The contents of the egg a fall and enter the container placed on the mounting table 12 below it.

The egg gripper 2 that grips the shell of the egg a from which the egg a has been cracked and the contents of which have been taken out is held by the gripping claw operating rod 23 that abuts on the concave and convex curved surface 25a of the operating cam 25 during further rotation.
As a result, the upper gripping claw 23a and the lower gripping claw 23b that have gripped the shell of the egg a open. The shell of the egg a falls due to the opening of the upper gripping claw 23a and the lower gripping claw 23b,
It is discharged out of the machine from a shell discharge chute 7 arranged below. Also, the egg a on the side split by the eggshell opening claw 5
Is also dropped, and is discharged out of the machine from a shell discharge chute 7 arranged below the shell.

The egg gripper 2 with the upper gripping claws 23a and the lower gripping claws 23b opened rotates upward to grip the egg a on the egg tray 21 and thereafter, the same operation is repeated.

The present invention is not limited to the above embodiment of the present invention, and it is needless to say that various modifications can be made without departing from the spirit of the present invention.

[0065]

As is apparent from the above description, according to the automatic egg breaking device according to the present invention, the egg gripper which rotates about the substantially horizontal axis and grips the central portion of the laterally oriented egg on the egg tray from above and below. Provided with a sensor, provided with a sensor for detecting the size of the egg gripped by the egg gripper, a part of the outer periphery of a predetermined location near the center of the egg that rotates around a substantially horizontal axis and protrudes from the side of the egg gripper In conjunction with the above sensor, a rotation blade is provided that rotates the center of rotation and cuts at a certain depth, and inserts the egg shell into this cut to open the egg shell and break the egg shell. In addition to providing a side, the egg gripper and the eggshell opening claw are configured to be movable to both sides after inserting into the incision of the egg, so that a part of the shell near the center of the sideways egg is cut almost vertically with the rotating blade, Insert the shell claws into this notch and put the egg shell By opening to the side and breaking the egg shell, the diameter of the crack is prevented from becoming relatively smaller than the large diameter in the center regardless of the size of the egg, and the contents of the egg from the crack It can be dropped and taken out immediately. In addition, a part of the outer circumference of the egg was cut with a rotary blade, and the eggshell was opened on both sides by opening the shell of the egg into the cut and the egg shell was split on both sides. It does not mix into the egg contents.

In the case where an egg supply conveyor is provided for supplying eggs in a lateral state on the egg tray, the eggs may be supplied on the egg tray in a horizontal state. it can.

[Brief description of the drawings]

FIG. 1 is an overall front view of an automatic egg breaking device showing an embodiment of the present invention.

FIG. 2 is a schematic plan view of an automatic egg breaking device showing an embodiment of the present invention.

FIG. 3 is a schematic sectional view of a rotary blade portion showing the embodiment of the present invention.

FIG. 4 is a schematic mechanism diagram of an egg gripper and a rotary blade showing an embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view of an egg gripper and an eggshell opening claw showing an embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view of the egg gripper and the eggshell opening nail after insertion, showing the embodiment of the present invention.

FIGS. 7A to 7E are explanatory views of the operation of cutting an egg by the rotary blade according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic egg splitting device 11 Vertical plate 11a Notch hole 12 Placement table 13 Caster 2 Egg gripper 21 Egg tray 22 Rotary shaft for egg gripper 22a Turntable 22b Bearing 22c Gear 22d Egg gripper drive motor 22e Endless chain 23 Gripping nail operation Rod 23a Upper gripping claw 23b Lower gripping claw 23c Spring 24 Gripping claw operating roller 24a Pivot shaft 24b Return spring 25 Operating cam 25a Concavo-convex curved surface 25b Convex curved surface 3 Sensor 31 Front end 32 Operating shaft 33 Weight 34 Contact standby position stopper 4 Rotary blade 41 rotating shaft 42 rocking plate 42a connecting rotating shaft 43 rotating blade drive motor 43a pulley 43b belt 43c pulley 44 protective cover 5 eggshell open claw 51 fixed shaft 52 fixed plate 53 pivot shaft 53a return spring 54 operating rod 54a pressing piece 55 Eggshell opening claw activation 6 egg feed conveyor 61 roller 62 driving shaft 63 gear 7 shell discharge chute a eggs

Claims (2)

[Claims] An egg gripper that rotates about a substantially horizontal axis and grips a central portion of a laterally oriented egg on an egg tray from above and below is provided, and a sensor that detects the size of the egg gripped by the egg gripper is provided. Provided is a rotary blade that rotates around a substantially horizontal axis and moves a part of the outer periphery of a predetermined portion near the center of the egg protruding from the side of the egg gripper in cooperation with the sensor so that the rotation center moves and cuts at a constant depth. Insert the eggshell into this notch, open the eggshell and split the eggshell, and provide eggshell opening nails on the sides of the rotation path of the egg grasper, and insert the eggshell into the egg notch and insert the eggshell and eggshell opening nails on both sides. An automatic egg breaking device characterized by a movable mechanism. 2. An automatic breaking device provided with an egg supply conveyor for supplying eggs in a lateral state on an egg tray.