JPH11292014A - Method for controlling discharge of egg in suction transfer mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge an egg close to an egg seat of a container in a correct posture without applying stress in consideration of movement of a suction cup at the time of discharging the egg. SOLUTION: A suction cup 1 is lowered to a position where a sharp end of and egg E reaches the vicinity of an upper and level 4 of an egg seat 3, sucking vacuum is canceled, and the suction cup 1 is raised after restriction of the suction cup 1 for the egg E is reduced by canceling of vacuum. As restriction begins to be reduced, the egg E begins to take a correct posture, and when the suction cup 1 is fully stretched, the egg E can be settled in the egg seat 3 like so-called soft landing, resulting in no stress applied to the egg.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a mechanism for transferring eggs using a bellows-type sucker, for example, a method for packing a predetermined number of eggs selected in the same size into a container by an egg packaging apparatus.
After sucking the eggs placed in the egg take-out position by the predetermined number of suckers and transferring them to the egg release position, the eggs are transferred from the suckers to the respective egg litters in the container. To a method for controlling release.

[0002]

2. Description of the Related Art In the above-mentioned chicken egg adsorption transfer mechanism, a chicken egg is adsorbed at a take-out position using a sucker, and after being transferred to a target packing place, descends and discharges the chicken egg toward an egg seat of a container. It is necessary to discharge the egg in a posture, that is, a posture in which the long axis of the chicken egg (the center axis connecting the blunt end and the sharp end) is vertical with the sharp end down. In addition, in order to pack the chicken eggs in the ovary of the container gently, that is, with as little stress as possible, the sucker may be released as close to the ovary as possible.

[0003]

Actually, as shown in FIG. 3, when the sucker 1 adsorbs the chicken egg E, the sucker 1 has a natural length (the length when the sucker is not performing the adsorbing operation). Since the egg E is considerably shrunk, the egg E is not necessarily sucked in a correct posture in this shrinking process, but is sucked in an inclined posture. Extremes are adsorbed at an angle of 30 ° or more. However, when the egg E in such an inclined position is brought close to the egg 3 as it is, the egg E is pressed against the container 2 in that posture,
The stress applied can cause egg breaking.
This tendency is particularly strong in a paper mold container in which the container 2 is harder than a pack (a retail container made of plastic film).

On the other hand, in order to avoid the above-mentioned inconvenience caused by releasing the egg E in a tilted posture, when the chicken E is released at a position away from the egg flat 3 (normally 40 mm to 50 mm),
The increase in the falling speed of the egg E due to its own weight and the time when the vacuum of the suction cup 1 is released are synergistic, and the suction action of the suction cup 1 itself to return to the original position is added. When working, the egg E is greatly stressed when the egg 3 is reached. However, at present, no consideration is given to the movement of the sucker at the time of releasing the eggs, and only the control of lowering, releasing the vacuum and raising the sucker is performed.

[0005] The problem to be solved by the present invention is to take into account the movement of the sucker at the time of release, and to release the eggs in the correct posture and as close to the ova as possible to reach the ova of the container. The stress that occurs when
The idea is not to feed the eggs.

[0006]

SUMMARY OF THE INVENTION A feature of the present invention is that the sucker is lowered to a position where the sharp end of the egg reaches near the upper edge level of the egg, the sucker vacuum is released, and the sucker sucks the egg by releasing the vacuum. The trick is to raise the suction cups after waiting for the restraints to begin.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a chicken egg sucking and transferring mechanism descends at a position where eggs are taken out, sucks a predetermined number of eggs from a group of eggs with a sucker group and rises, and moves to a target egg packing position. Then, the eggs are discharged to the respective ova of a container, a container made of a plastic film for retailing called a pack, or a container called a molding made of paper, and then moved again to a position where the eggs are taken out. As shown in FIG. 1 and FIG. 2, a predetermined number of bellows-type suckers 1 are
For example, five of them are provided at regular intervals perpendicular to the paper surface.
Each suction cup 1 is connected to a vacuum device (not shown).

[0008] The container 2 is placed on a conveyor (not shown). In the case of a pack, for example, in the case of a pack, eggshells 3 each having five rows in a direction perpendicular to the paper surface are provided in front and rear (left and right in the drawing) two rows, and one container 2 has ten eggs. Seat 3
Is provided. By means of the conveyor, this container 2 is advanced when the egg 3 has been filled with the egg E, and the following containers are waiting for the egg to be filled with the egg.

The operation of the egg suction and transfer mechanism, that is, the movement between the picking position and the packing position of the egg, the lifting, the descent, the suction of the sucker, and the release of the suction, are performed together with the operation of the conveyor and the egg washing and sorting including the egg packing device. It is controlled by a signal from a control device provided in the packaging device.

[0010] Then, in order to pack the eggs E in the egg seat 3 of the container 2, control for releasing the eggs E by a group of suckers having absorbed the eggs E is performed as follows. First, as shown in FIG. 1, the lower limit of the lowering of the group of suckers 1 is based on the position where the sharp end of the chicken egg E adsorbed with the sharp end down reaches near the upper edge level 4 of the egg 3. Therefore, the chicken egg E drops by approximately 20 to 30 mm, depending on the size. The point in time when the sharp end reaches the upper edge level 4 is the point in time when the egg E is released,
At the time of discharge, the vacuum of the suction cup group is released, and air is sent to the suction cup group. The above-mentioned standard is selected based on data stored in the control device in advance according to the size of the egg E and the type of the container.

When the vacuum is released, the sucker 1 starts to extend, so that the restraint of the sucker 1 against the egg E is weakened, and the egg having a bad posture turns its sharp end directly downward by its own weight, that is, starts the operation of making the long axis vertical. Then, prepare to enter the egg 3 in the correct posture.

At the same time when the vacuum of the suction cup group is released, the timer is operated, and 0.1 to 0.2 seconds after the release of the vacuum, the suction cup 1 is released.
Raise the group. Between the release of the vacuum and the start of the ascent, the restraint on the eggs E of the first group of suckers begins to be released, and the eggs E begin to descend. However, even when the descent was started, the effect of vacuum still remained and the suction of the group of suckers was not completely dissolved, so it did not fall naturally, and the egg E descended while keeping pace with the growth of the group of suckers. , Settles on the ovale 3 as shown by the imaginary line in FIG. The egg E in the inclined position is also adsorbed by the suction cup 1 with its blunt end being imperfectly adsorbed, and descends. Therefore, the egg E is settled in the correct position in the correct position while keeping the long axis vertical by its own weight. As shown in FIG. The hen egg E is accommodated in the locus 3 in a correct posture and without stress.

The rising speed of the group of suction cups 1 is set in consideration of the average speed (time) at which the suction cups 1 extend, so that when the suction cups 1 are fully extended, the chicken eggs E are placed in the ovum so as to make a soft landing. I can calm down to 3.

With this control, the force applied downward to the egg E by the spring action generated when the suction cup 1 is released from the vacuum and tries to expand and return to the original state, the suction cup 1 rises. As a result, there is no effect on the egg E.

[0015]

According to the present invention, by controlling the sucker in consideration of the movement of the sucker at the time of releasing the eggs, the eggs can be accommodated in the egg seat without giving any stress.

[Brief description of the drawings]

FIG. 1 is a side view showing a state where a sucker is lowered to a release position of a chicken egg.

FIG. 2 is a side view showing a state in which the release of chicken eggs is completed.

FIG. 3 is a side view showing a chicken egg sucked in a posture inclined to a sucker.

[Explanation of symbols]

 1 sucker 2 container 3 egg flat 4 upper edge

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kondo Hayashi Kyowa Machine Co., Ltd.

Claims (1)

[Claims] In a suction transfer mechanism provided with a group of bellows-type suckers, the sucker is lowered to a position where the sharp end of the egg reaches a level near the upper edge of the egg, and the sucker vacuum is released. A method for controlling egg release in an adsorption transfer mechanism, wherein the sucker is raised after the sucker restrains the egg from being released.