JP2928443B2 - Lid for storage container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid for a storage container, and more particularly, to a lid for covering a container for storing an aluminum case or the like, and one lid when the lid is automatically supplied and attached to the storage container. The present invention relates to an automatic supply technique for supplying a lid.

[0002]

2. Description of the Related Art In recent years,
Aluminum cases have come to be frequently used as simple cases for storing foods and the like.

[0003] This type of aluminum case is manufactured by integrally forming a cup shape or the like from an aluminum foil or a back sheet made of aluminum foil and a bite, and is mainly used for serving side dishes such as salads, snacks, and fruits. It is used as a simple container.

When such an aluminum case is displayed on a display shelf of a supermarket or the like, a large number of aluminum cases such as 20 or 30 are packed and stored in a container, and a large number of containers are stacked on the display shelf. It is common to use

[0005] The container is usually formed by molding a transparent film made of resin into a cup shape, and comprises a lower container and a lid attached to the lower container.

On the other hand, when the container is viewed from the manufacturing side, a large number of aluminum cases are housed in the lower container, and a lid is attached in this state.
Although one container is formed, these operations need to be performed automatically.

However, the most important problem in automation is an automatic supply technique for supplying lids one by one when the lids are attached to the lower container.

That is, the shape of the lid is generally such that it covers the upper edge of the lower container, and the upper edge of the lid protrudes downward at the tip. When taking out one by one from the hopper in a state where many lids of such a shape are stacked and supplying them automatically, a claw is inserted between the upper edges of the upper and lower lids, and the bottom rear surface of the lid is sucked and removed with a suction cup. There is a need.

However, conventionally, there is no gap between the upper edges of the upper and lower lids so that the claws can be inserted. Therefore, even if the suction is performed by the suction cup, a plurality of lids are simultaneously taken out. As a result, it was difficult to remove the lids one by one. For this reason, it was necessary to supply the lids one by one by hand, and it was difficult to completely automate the assembly of the container.

In view of the above circumstances, an object of the present invention is to provide a storage container capable of completely assembling a storage container such as an aluminum case, and to provide a technology for automatically supplying the storage container. It is.

[0011]

The present inventor has studied the means for solving the above-mentioned problems, and as a result, if measures are taken to provide a gap at the edge portion of the plurality of stacked lids, the claw is easily obtained. Based on the finding that a gap can be inserted, the inventor conducted extensive research on a means for providing a gap. As a result, it is not very effective to use the gap forming means in the edge portion of the lid because the edge itself is in the form of a film, but by forming a concave or convex wart on the bottom of the lid, the shape of the lid is reduced. It has been found that, while maintaining, the upper and lower lids can be stacked with a slight gap, and thus a gap can be formed at the edges of the upper and lower lids so that the claws can be easily inserted, and the present invention has been completed here. Things.

That is, the present invention relates to a storage container lid having a bottom portion, a peripheral wall portion rising from the bottom portion, and an edge formed on the upper side of the peripheral wall portion. A plurality of concave or convex local steps are formed at the bottom of the storage container lid attached to the automatic feeding device, and the local steps have a plurality of different shapes. Are different
The plurality of local steps are sequentially stacked in a certain order while maintaining an interval therebetween .

Another aspect of the present invention provides a storage container lid having a bottom, a peripheral wall rising from the bottom, and an edge formed on the upper side of the peripheral wall. In the storage container lid to be stacked and attached to the automatic supply device, a plurality of concave or convex local steps are formed on the bottom, and the mutual intervals of the local steps are different from each other by a plurality of types. Are different from each other due to the plurality of local steps.
Characterized in that it successively stacked in reluctant certain order.

[0014]

[0015]

The present invention will be described below in more detail with reference to examples.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a lid for a storage container according to the present invention will be described.

As shown in FIG. 1, the storage container lid 1
Is a bottom ₁₁ and a peripheral wall 1 rising from the bottom.
And _2, a lid has a shape having an edge 1 ₃ formed on the upper side of the peripheral wall portion, generally be deposited numerous against aluminum case such as 4 lower container 2 accommodating the Thereby, one storage container 3 is assembled.

In order to automatically perform the work of attaching the lid to the lower container, when removing a large number of lids stacked in the hopper one by one from the hopper, the upper edge of the upper and lower lids is It is necessary that the nail can be easily and reliably inserted. If the nails cannot be inserted, even if the bottom surface of the lid is sucked by the suction cup, the lids that overlap one another cannot be separated, and two or more pieces will be sucked by the suction cup, and automatic feeding will be smooth. Cannot be implemented.

Conventionally, the bottom of this type of lid is formed as a flat bottom surface. However, in this case, as shown in FIG. 2, the bottoms of the upper and lower lids are in close contact with each other. The edges are also in close contact with each other and overlapped, and there is substantially no gap L between the edges (L ≒ 0 mm),
It interferes with nail insertion.

In this regard, in the present invention, as means for easily and surely inserting the claws between the upper edge portions of the upper and lower lids, the shape of the bottom of the lid is devised, and the lids are vertically stacked. In this case, an effective gap L can be provided between the edges.

[0021] That is, as shown in FIG. 3, a plurality of concave or convex warts 1 ₄ is formed in the bottom 1 _1. The wart in the case shown is a concave warp when viewed from above.

The size and arrangement of the warts can be determined as appropriate. However, when the lids are placed one above the other, they have the same dimensions and arrangement position (ie, the upper and lower lids have exactly the same dimensions and shape). In this case, the warp of the upper lid completely fits into the warp of the lower lid, and an effective gap L cannot be formed between the bottoms of the upper and lower lids, and therefore, the edges. Care must be taken to slightly shift the arrangement position.

For example, as shown in FIG. 4, warts having slightly different depths are formed in the same shape and arrangement position by, for example, three.
Prepare the type. Specifically, the depth of the warts the H _1, H _2, H
₃ (H ₁ <H ₂ <H ₃ ), when the warp of (b) is overlaid on the warp of (a) and the wart of (c) is overlaid on the wart of (b), Since the wart does not fit completely in the lower wart, the upper cover slightly overlaps the lower cover in a state that the upper cover is slightly raised, and therefore, an effective gap L is provided between the upper and lower lid edges. Will be formed. Depth H ₁ ,
The difference between H ₂ and H ₃ may be appropriately determined depending on how much gap L is formed. Of course, there is no need to make a noticeable difference in the depth, so that there is no hindrance to the product when the lid is attached to the lower container.

As another method, as shown in FIG. 5, warts having three different lengths may be sequentially formed at the same position on the bottom. Further, instead of the length of the wart, the inclination of the warp in the depth direction may be sequentially changed.

In short, if a large number of lids are stacked, if the shape and / or the position of the warp formed on the bottom of each lid are cyclically different, the edges of the upper and lower lids can be connected to each other. Between them, an effective gap L can be provided. Cyclic means in the case of FIG.
(A), (b), (c) If the three lids formed on the bottom of the warp are stacked in this order, then in a similar combination, (a), (b), (c) 3) are stacked in this order with three lids formed with the warts at the bottom. The shape or arrangement position of the wart may be a plurality of types, and three to five types
About kind is appropriate.

As described above, since the lid has a concave or convex warp at the bottom, when a plurality of lids 1 are stacked as shown in FIG. Is provided with an effective gap L, and the gap 5
Can be easily inserted. Therefore, the nail 5
When the suction cup is sucked on the back surface of the lid 1 and pulled downward, the lower lid 1 can be easily taken out from the upper lid and can be automatically supplied.

The shape and dimensions of the other parts of the lid are not limited as long as a concave or convex warp is formed at the bottom. The material of the lid is usually a resin transparent film, but there is no particular limitation as long as it is a film-like material.

[0028]

As described above, according to the present invention,
Since lids can be automatically fed one by one at the time of assembling a storage container such as an aluminum case, complete automation is possible, and the effect of reducing manufacturing costs is remarkable.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a conventional storage container, and shows that the storage container is configured by attaching a lid to a lower container.

FIG. 2 is a diagram illustrating a state in which a plurality of lids having a conventional shape are stacked, and a gap L between edges of the lid.

FIG. 3 is a view for explaining the shape of a lid according to the present invention, and (a)
Is a sectional view, and (b) is a plan view.

FIGS. 4 (a), (b) and (c) are views showing warps of different depths formed on the bottom of the lid according to the present invention.

5 (a), 5 (b) and 5 (c) are views showing warps of different lengths formed on the bottom of the lid according to the present invention.

FIG. 6 is a diagram illustrating a state in which a plurality of lids according to the present invention are stacked and a gap L between edges of the lid.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lid 1 ₁ Bottom of lid 1 ₂ Peripheral wall of lid 1 ₃ Edge of lid 1 ₄ Wart formed on bottom of lid 2 Lower container 3 Storage container 4 Aluminum case etc. 5 Claw

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-8606 (JP, A) JP-A-63-139838 (JP, A) JP-A-56-106706 (JP, A) JP-A Sho 54- 85889 (JP, A) Japanese Utility Model 3-11681 (JP, U) Japanese Utility Model 1-82163 (JP, U) Japanese Utility Model 51-71282 (JP, U) (58) Field surveyed (Int. ⁶ , DB name) B65B 7/28 B65D 43/03

Claims (4)

(57) [Claims] 1. A storage container lid having a bottom portion, a peripheral wall portion rising from the bottom portion, and an edge formed on the upper side of the peripheral wall portion, wherein a plurality of lids of the same size are stacked and automatically supplied. In the lid for the storage container to be mounted on the device, a plurality of local steps having a concave or convex shape are formed on the bottom portion, and the shapes of the local steps are different from each other by a plurality of types. The plurality of localities
A lid for a storage container, wherein the lids are sequentially stacked in a certain order while maintaining an interval between them by steps . 2. The storage container lid according to claim 1, wherein the plurality of different shapes are depths or lengths. 3. A storage container lid having a bottom portion, a peripheral wall portion rising from the bottom portion, and an edge formed on the upper side of the peripheral wall portion, wherein a plurality of containers of the same size are stacked and automatically supplied. In the lid for a storage container to be attached to the device, a plurality of local steps having a concave or convex shape are formed at the bottom, and a plurality of kinds of intervals between the local steps are different, and intervals between these steps are different. Is the plurality
A lid for a storage container, wherein the lids are sequentially stacked in a fixed order while maintaining an interval between them by a local step . 4. The storage container lid according to claim 3, wherein the local steps are located on an arc centered on the bottom center, and the interval between the local steps is a circumference of the arc.