JP2015013654A - Egg tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pulp mold egg tray capable of surely dropping one by one on a line by firmly hooking a claw of a robot arm on the egg tray, when setting the laminated pulp mold egg tray in an egg selector.SOLUTION: A locking piece 110 is formed so as to project outside from a lower part of a truncated cone-shaped projection part 102c erected along a peripheral edge part 103 of a pulp mold egg tray 100, and thereby, the claw of the robot arm is firmly hooked on the locking piece 110. A step part formed with a height more than the peripheral edge part 103 is also provided on an upper surface of the locking piece 110, and thereby, strength of the locking piece 110 is enhanced so that deformation such as deflection is hardly caused when the claw of the robot arm is hooked.

Description

The present invention relates to an egg tray for storing eggs selected by an egg sorting apparatus.

In the past, eggs collected in a poultry house were sorted by human hand and stored in an egg tray. However, in recent years, automation has progressed, and it has become possible to perform a series of processes from size selection to egg storage by using an egg sorting apparatus. And the thing made from a synthetic resin is used for the egg tray used for accommodation of a chicken egg (for example, refer patent document 1).

  FIG. 15 shows an example of a conventional egg tray applicable to an egg sorting apparatus. The whole egg tray 10 is made of a synthetic resin, and a chicken egg containing portion 11 of 5 × 6 = 30 in length and breadth is formed to accommodate 30 eggs. And each egg storage part 11 has the substantially cone-shaped protrusion part 12 standingly arranged in the four corners, and, thereby, each egg storage part 11 is divided. In addition, when the egg trays in which the eggs are stored are stacked vertically and horizontally, the top of the projecting portion 12 comes into contact with the outer bottom surface of the egg storage portion 11 of the upper layer egg tray, so that a load is applied to the stored eggs. It is designed to be stacked so that it does not take. As shown in FIG. 16, the egg tray 10 is set in the egg sorting apparatus in a state where a plurality of eggs are stacked. A gap Y is formed between the egg trays 10 and 10 thus stacked. A claw provided on the robot arm of the egg sorting device is inserted into this gap Y and hooked with the periphery of the egg tray 10, so that the egg tray 10 located in the lowermost layer is sequentially placed on a line such as a lower belt conveyor. Can be dropped intermittently one by one. Then, the eggs that have been size-selected in the next step are automatically accommodated in the egg-containing portion 11.

However, the 30-hen egg tray made of synthetic resin formed in this way has a drawback that toxic gas is generated by incineration when discarded. On the other hand, there is an egg tray made of pulp mold that can be easily discarded. However, the conventional 30 eggs tray made of pulp mold is only of a type in which eggs are accommodated by hand, and no one applicable to a egg sorting apparatus has been provided. Therefore, the present inventor made an egg tray for 30 pieces in which the egg tray made of the synthetic resin was changed to pulp mold and tried to apply it to the egg sorting apparatus. As a result, for example, the egg tray is clogged in the device, or two or more egg trays are dropped at the same time, and it is surely dropped one by one from the bottom layer like a synthetic resin egg tray. It has been found that there is a problem that cannot be made.

JP 2008-127082 A

  Therefore, in order to solve the above-mentioned problem, the present invention can securely hook the robot arm claws to the egg tray when it is set in the egg sorting device, thereby reliably dropping them one by one on the line. It is an object of the present invention to provide an egg tray made of pulp mold.

In order to solve the above-mentioned problems, the present invention adopts a plurality of egg containing portions formed in a vertical and horizontal lattice shape in which the inside is formed in a bowl shape, and at each of the four corners of the plurality of egg containing portions, a wharf is provided. An egg tray made of substantially square pulp mold, wherein a protruding portion is formed upright and a peripheral portion is formed surrounding the plurality of egg-containing portions and the plurality of truncated spindle-shaped protruding portions. A locking piece formed to protrude outward from the peripheral edge from the lower part of the truncated pyramid-shaped protrusion that is erected along the edge, and the locking piece is on the upper surface from the peripheral edge A chicken egg tray characterized by comprising a step portion formed with a height.

Thus, the claw of the robot arm is formed by forming the locking piece so as to protrude outward from the lower part of the truncated pyramid-shaped protruding portion that is erected along the peripheral edge of the pulp mold-made egg tray. The locking piece is securely caught. Furthermore, by providing a step formed on the upper surface of the locking piece with a height higher than the peripheral edge, the strength of the locking piece is increased so that it is difficult to bend when the claw of the robot arm is caught. .

  The locking piece may include a protrusion formed on the upper surface thereof that is connected to a ridge line of the truncated pyramidal protrusion positioned along the peripheral edge. By carrying out like this, since an integrity can be given to a locking piece and a truncated pyramid-shaped protrusion part, the intensity | strength of a locking piece can be raised more. Moreover, when attaching a lid | cover to an egg egg tray, it becomes possible to insert the latching piece in which the projection part was formed in the hole formed in the lid | cover, and to attach.

  Two each of the locking pieces may be formed on two opposing sides of the peripheral edge. By doing so, since the locking piece is formed at a position corresponding to the robot arm provided in the egg sorting apparatus, the egg trays can be peeled and dropped one by one more reliably.

  In addition, a recess is formed between the plurality of truncated pyramid-shaped protrusions positioned along the peripheral edge where the locking piece is formed, and the truncated pyramid-shaped protrusion is inside the recess. A rib connecting from the lower part to the peripheral part may be formed. By doing so, the rigidity of the peripheral edge around the locking piece can be increased, so that the peripheral edge bends due to the hooking of the claw of the robot arm, or the peripheral edge near the locking piece is deformed when stacked. Can be prevented.

  Further, when two or more egg trays are stacked, the ribs of the egg tray located in the lower layer may come into contact with the outer bottom surface of the recess of the egg tray located in the upper layer. In this way, when the egg trays are stacked, it is possible to prevent the egg trays located in the upper layer and the egg trays located in the lower layer from being in close contact with each other. The gap between the egg trays can be kept constant.

  According to the present invention, the stacked egg trays are formed by protruding the locking pieces outwardly from the lower part of the truncated pyramid-shaped protrusions erected along the peripheral edge of the pulp mold egg tray. Is set on the egg sorting device, the claw of the robot arm is firmly caught by the locking piece of the egg tray. Furthermore, the rigidity of the locking piece is increased by providing a step formed on the upper surface of the locking piece that is higher than the peripheral edge, and the locking piece is bent or deformed by the hook of the claw of the robot arm. Can be prevented. Thereby, the nail | claw of a robot arm can peel an egg tray one by one reliably, and can drop it on a downward line.

1 is a perspective view showing an egg tray according to Example 1. FIG. 3 is a plan view showing an egg tray according to Example 1. FIG. 1 is a front view showing an egg tray according to Example 1. FIG. 1 is a side view showing an egg tray according to Example 1. FIG. (A) is the elements on larger scale of the latching piece in the egg egg tray which concerns on Example 1, (b) is the ZZ end elevation of (a). (A) is the elements on larger scale of the recessed part and rib which are formed in the vicinity of the 2nd truncated pyramid protrusion part in the egg tray which concerns on Example 1, (b) is formed in the vicinity of the 1st truncated pyramid protrusion part. It is the elements on larger scale of the recessed part and rib which are made. It is a figure which shows the state which laminated | stacked the egg tray based on Example 1. FIG. (A) is the elements on larger scale which show the state which laminated | stacked the egg tray based on Example 1, (b) is the elements on larger scale which show the state which a rib supports a recessed part. It is a perspective view which shows the state which attached the lid | cover to the egg egg tray which concerns on Example 1. FIG. It is a front view which shows the state which attached the lid | cover to the egg egg tray which concerns on Example 1. FIG. It is a side view which shows the state which attached the lid | cover to the egg egg tray which concerns on Example 1. FIG. It is the elements on larger scale of the locking piece in the state which attached the lid | cover to the egg egg tray which concerns on Example 1. FIG. 6 is a perspective view showing an egg tray according to Example 2. FIG. It is the elements on larger scale of the locking piece in the egg egg tray which concerns on Example 2. FIG. It is a perspective view which shows the conventional egg egg tray. It is a figure which shows the state which laminated | stacked the conventional egg egg tray.

  The egg tray according to the present invention includes an egg container, a truncated pyramid-shaped protrusion, a peripheral edge, and a locking piece. The egg tray according to the present invention is made of pulp mold. That is, after immersing a mold with a wire net made in a shape corresponding to the shape of the egg tray in a pulp mold solution in which waste paper or pulp is dissolved in water, vacuum sucking from behind to attach pulp etc. to the wire net, It is obtained by pulling up from the solution, removing it from the mold with a wire mesh, and drying it. Therefore, the egg storage part, the truncated pyramid-shaped protruding part, the peripheral part and the locking piece are integrally formed.

  Below, the Example of the egg tray based on this invention is described based on figures.

  1 to 4 show an egg tray 100 according to the first embodiment. 1 and 2, the sides indicated by A and B are the front side and the back side (lateral direction), respectively, and the sides indicated by C and D are the right side surface and the left side surface (vertical direction), respectively. The back surface is symmetrical with the front surface, and the left side surface is symmetrical with the right side surface. As shown in FIGS. 1 to 4, the chicken egg tray 100 includes a chicken egg containing portion 101, a truncated pyramid shaped protruding portion 102, a peripheral edge portion 103, and a locking piece 110, which are integrally formed by a pulp mold. It is formed and can accommodate 30 eggs.

As shown in FIGS. 1, 3, and 4, the egg storage unit 101 is formed in a bowl shape so that the lower half of the egg E is accommodated, and all have the same shape and size. In addition, as shown in FIG. 2, the opening shape of the egg containing portion 101 is formed in a substantially square shape when viewed from above, and this is arranged in a 5 × 6 = 30 lattice shape with 5 rows in the horizontal direction and 6 rows in the vertical direction. Has been.

The truncated pyramidal protrusion 102 includes a first truncated pyramidal protrusion 102a, a second truncated pyramidal protrusion 102b, and a third truncated pyramidal protrusion 102c. The first truncated pyramid-shaped protrusions 102a are formed in a truncated quadrangular pyramid shape, and are erected so as to divide each egg storage portion 101 at four corners. As shown in FIGS. 1 and 2, the second truncated pyramidal protrusion 102 b is formed in the shape of a truncated triangular pyramid that is substantially half-cut from the first truncated pyramidal protrusion 102 a, and the peripheral portion 103. It is erected in a row along the horizontal direction. The third truncated pyramid-shaped protrusion 102 c is substantially the same shape as the first truncated pyramid-shaped protrusion 102 a and is erected adjacent to the second truncated pyramid-shaped protrusion 102 b along the longitudinal direction of the peripheral edge 103. In the lower part, a locking piece 110 described later is formed. And as shown in FIG.3 and FIG.4, the top of each truncated pyramid shaped protrusion part 102a, 102b, 102c is formed in the flat surface. As a result, when the egg trays 100 are stacked vertically and horizontally with the eggs stored therein, the tops of the truncated pyramid-shaped protrusions 102a, 102b, 102c are outside the egg containing part 101 of the upper egg tray 100. It supports the bottom and can be placed stably. The egg tray 100 having the egg storage portion 101 and the truncated pyramid-shaped protrusion 102 is surrounded by a peripheral edge portion 103, and its planar shape is substantially square as shown in FIG.

  The locking pieces 110 are provided at two locations along the longitudinal directions C and D of the peripheral edge portion 103, respectively. Specifically, the locking piece 110 is formed to project outward from the peripheral portion 103 from the lower portion of the third truncated pyramid-shaped protruding portion 102 c erected along the longitudinal directions C and D of the peripheral portion 103. ing. When the plurality of egg trays 100 are stacked and set in the egg sorting device, the locking piece 110 becomes a portion where the claw of the robot arm of the egg sorting device is caught.

And as shown to Fig.5 (a), the step part 111 and the projection part 112 are formed in the upper surface of the latching piece 110. As shown in FIG. The step portion 111 is on the upper surface of the locking piece 110 and is formed with a height higher than that of the peripheral edge portion 103. As shown in FIG. 5B, the stepped portion 111 is formed to have a convex shape on the upper surface side and a concave shape on the lower surface side while having substantially the same thickness as the peripheral edge portion 103. Thereby, compared with the case where the locking piece 110 is formed as a single piece, the strength of the locking piece 110 is significantly increased. By doing so, when the claw of the robot arm is caught on the locking piece 110, the locking piece 110 is prevented from being deformed or bent. Further, the protrusion 112 is provided on the upper surface of the locking piece 110 and connected to the stepped portion 111 and is connected to the ridge line of the third truncated pyramid-shaped protrusion 102 c adjacent to the locking piece 110. Yes. Thereby, since the step part 111, the projection part 112, and the 3rd truncated pyramid-shaped protrusion part 102c are integrally formed, it becomes possible to raise the intensity | strength of the latching piece 110 further. In addition, the protrusion 112 is also formed in a convex shape on the upper surface side and in a concave shape on the lower surface side, like the stepped portion 111. Further, the projection 112 is also used for attaching a lid 200 described later.

  In addition, as shown in FIGS. 6A and 6B, a recess 104 is formed between each of the head-and-head projections 102a, 102b, and 102c that are erected along the longitudinal direction of the peripheral edge 103. In addition, a rib 105 is formed inside the recess 104 so as to connect the first truncated pyramid-shaped protrusion 102 a and the peripheral portion 103, and the second truncated pyramid-shaped protrusion 102 b and the peripheral portion 103. Has been. The recess 104 and the rib 105 increase the strength of the peripheral edge 103 of the egg tray 100. Further, as shown in FIGS. 7 and 8A and 8B, when the egg trays 100 are stacked, the outer bottom portion 104a of the recess 104 of the upper egg tray 100 is formed by the rib 105 of the lower egg tray 100. Is supported, and adhesion between the upper layer egg tray 100 and the lower layer egg tray 100 can be prevented. As a result, a certain gap X is formed between the peripheral portion 103 of the upper layer egg tray 100 and the peripheral portion 103 of the lower layer egg tray 100, and the claw of the robot arm can be reliably received. It becomes like this. Here, the depth of the recess 104 and the height of the rib 105 are preferably adjusted so that the gap X is in the range of 3 to 15 mm. This is because if it is 3 mm or less, the claw of the robot arm is difficult to enter, and if it is 15 mm or more, it becomes bulky when laminated.

  9 to 11 show a state in which the lid 200 is attached to the egg tray 100. FIG. The lid 200 is formed by molding a transparent thin-walled synthetic resin, and is formed so as to cover the entire plane of the egg tray 100. On the side surface 200 a of the lid 200, a hole 201 is formed at a position corresponding to the locking piece 110 of the egg tray 100. Then, as shown in FIG. 12, the lid 200 is attached by fitting the locking piece 110 having the projection 112 into the hole 201 from the inner surface side. At this time, the protrusion 112 has a strong fit with the hole 201 so that it is not easily displaced or disengaged.

  As described above, by providing the egg tray 100 with the locking piece including the stepped portion 111 and the protruding portion 112, the claws of the robot arm of the egg sorting device are surely hooked. Application to an egg sorting apparatus that has been possible becomes possible.

FIG. 13 shows an egg tray 100 according to the second embodiment. The egg tray 100 according to the second embodiment is the same as the first embodiment in its basic structure, but as shown in FIGS. 13 and 14, the egg tray 100 is not provided with a protrusion on the upper surface of the locking piece 110. Different from Example 1. The form of this Example 2 assumes the case where attachment of a lid is not required. Therefore, the step portion 111 is formed on substantially the entire upper surface of the locking piece so that the strength of the locking piece is not reduced by omitting the protrusion. Also by this, it is possible to obtain the same operation effect as Example 1 that the nail of the robot arm of the egg sorting device is surely caught.

DESCRIPTION OF SYMBOLS 100 Egg tray 101 Egg storage part 102 A truncated cone-shaped protrusion part 103 Peripheral part 104 Recessed part 105 Rib 110 Locking piece 111 Step part 112 Projection part 200 Lid 201 Hole part

Claims (5)

A plurality of egg storage parts formed in a bowl shape inside are arranged in a vertical and horizontal lattice shape, and truncated cone-shaped protrusions are respectively provided at the four corners of the plurality of egg storage parts, and the plurality of egg storages An egg tray made of substantially square pulp mold in which a peripheral portion surrounding the portion and the plurality of truncated pyramidal protrusions is formed,
A locking piece formed to protrude from a lower portion of the truncated pyramid-shaped protruding portion erected along the peripheral edge portion to the outside of the peripheral edge portion; An egg tray comprising a step portion formed with a height higher than the portion.   2. The egg tray according to claim 1, wherein the locking piece includes a protrusion formed on an upper surface of the locking piece so as to be continuous with a ridge line of the truncated pyramidal protrusion positioned along the peripheral edge.   3. The egg tray according to claim 1, wherein two of the locking pieces are formed on each of two opposite sides of the peripheral edge.   A recess is formed between the plurality of truncated pyramid-shaped protrusions positioned along the peripheral edge where the locking piece is formed, and the lower part of the truncated pyramid-shaped protrusion is inside the recess. The egg egg tray according to any one of claims 1 to 3, wherein a rib connected to the peripheral edge is formed.   5. The egg tray according to claim 4, wherein, when two or more egg trays are stacked, the rib of the egg tray located in the lower layer contacts the outer bottom surface of the recess of the egg tray located in the upper layer. .

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