JPH0577849A - Can lid and method for its manufacture - Google Patents

Abstract

PURPOSE:To make the design of can lid freely changeable. CONSTITUTION:A metal plate is press molded into a lid body 1 and its top surface 2 is stamped out to form an opening 12. A stepped part 3 is formed by projecting inwardly from the upper part of the lid body 1, a separately processed top plate 5 is placed on the stepped part 3 and an opening edge 13 is curled to secure the top plate 5 between itself and the stepped part 3, thereby forming the top plate and the lid body into a unitary structure.

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 can container and a method for manufacturing the lid.

[0002]

2. Description of the Related Art Conventionally, a lid of a can container is integrally formed with a top plate and a rising edge by punching and drawing a metal plate by a press machine, and then a peripheral portion punched is rounded by an outer curl process. It was

[0003]

However, in the conventional lid of the can container, the rising edge and the top plate are integrally formed by pressing a metal plate made of the same material, so that the lid design is always constant. However, there was a drawback that it was impossible to make changes. Therefore, in order to change the design of the lid, it is possible to change the die of the press machine or attach a seal or the like to the lid, but in the former case, the manufacturing cost increases due to the increase in the work process, and the latter. In the case of the above, there was a defect that the mere seal did not give a feeling of quality and a high-grade feeling.
It is also possible to attach leather, fur, cloth, etc. in order to give a texture and a high-class feeling, but in this case, the edges of the leather, fur, cloth, etc. are exposed, and since it is thick, it looks bad and easily peels off. There was a flaw. In addition, the lid of a conventional can container has a closed upper surface, and the items stored in the can container cannot be seen through the lid. It was necessary to open or make a hole in the top plate of the lid and attach the transparent plate.

The present invention has been devised in view of the above problems, and the design can be easily changed without increasing the number of working steps, and the material has a texture and a high-class feeling, and the contents can be viewed from the upper surface side. It is an object of the present invention to provide a lid for a can container that can be configured to allow confirmation of the above and a method for manufacturing the lid.

[0005]

The lid of the can container of the present invention has the following requirements. That is, (a)
The main body is made of a metal plate, and an opening is formed on the upper surface. (B) An inwardly bent step is formed on the upper part of the main body. (C) The upper plate is sandwiched between this step and the curled portion of the opening.

Further, the method for manufacturing the lid of the present invention comprises the following steps. That is, (a) a first step in which a main body is formed by pressing a metal plate.
(B) A second step in which the upper surface of the main body is punched out. (3) A third step in which a step portion is formed on the upper part of the main body due to an inward constriction.
Process. (D) A fourth step of mounting an upper plate of another component on the stepped portion of the main body and fixing the upper plate by curling.

[0007]

In the above manufacturing method, the main body forming the lid is formed in a convex shape in cross section by a drawing process of a metal plate press machine in the first step, and the upper surface is formed by a punching process in the second step. It is removed and an opening is formed.
In the third step, the upper part of the rising part is pressed inward from the outside to form a constricted part inward, and pressure is applied from the up and down direction by the press, whereby the constricted part is crushed and the stepped part is collapsed. Is formed. In the fourth step, the separately processed upper plate is placed on the step portion through the opening on the upper surface, and the upper opening is curled similarly to the lower cutting edge so that the step portion and the curl are curled. The upper plate is fixed between the processing parts.

In the above structure of the lid, since the step portion is integrally formed when the main body is processed, it is not necessary to mount a separate component inside the main body, and the separately processed upper plate is stabilized on the step portion. The upper plate can be easily attached by curling the opening edge or the like. If a plate on which leather, fur, or cloth is pasted is used as the upper plate, or if a plate having three-dimensional unevenness formed by pressing is used, a lid with a high-quality texture can be obtained. If this upper plate is made of a transparent plate such as an acrylic plate, the contents can be seen through the upper plate with the lid attached to the can container, and in addition to the function as a can container, it can be displayed in stores. In this case, the display effect of the product can be improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. In FIG. 1, reference numeral 1 is a main body of a lid of a can container. A metal plate such as the above is punched by a press machine to have a substantially convex cross section, and in the second step, as shown in FIG. 2, the upper surface 2 of the main body 1 is punched out to form an opening 12. Next, in the third step as shown in FIG. 3, the upper part of the rising part is pressed inward from the outside to form a constricted part inward, and pressure is applied from the up and down direction by the press, The neck portion is crushed to form the ring-shaped step portion 3. At the same time, the lower cutting edge 1
1 is curled to form a rounded edge 4. Next, in the fourth step as shown in FIG. 4, the separately processed upper plate 5 is placed on the stepped portion 3 through the opening 12 of the main body 1, and as shown in FIG. Similarly, by curling the upper opening edge 13, the upper plate 5 is sandwiched between the stepped portion 3 and the curled portion 6 and integrally fixed, and the lid body is completed.

According to the embodiment shown in FIG. 1, since the step portion 3 is integrally formed when the main body 1 is processed, it is not necessary to attach a separate component to the inside of the main body 1, and another step is separately formed on the step portion 3. The upper plate 5 can be stably held, and the upper plate 5 can be easily attached by curling the opening edge 13. By preparing various types of the upper plate 5 such as an opaque plate and a printed plate, the design of the lid can be easily changed by changing the upper plate 5. For example, a plurality of upper plates can be provided for each product. If it is prepared, it can be used as a container for a plurality of products by sharing the main body 1 and changing only the upper plate 5. Further, in order to give the upper plate 5 a high-grade feeling and texture, when a plate with thick leather, fur, cloth, etc. is used as the upper plate, the edge of the leather, fur, cloth, etc. is curled by the curling portion 6. Since it is pressed down, the peripheral edge is not exposed, the appearance is improved, and it is difficult to peel off. Furthermore, if a transparent plate such as an acrylic plate is used as the upper plate 5, the contents can be seen through the upper plate 5 with the lid attached to the can container, and in addition to the function as the can container, It is possible to improve the display effect of the product when it is displayed at the store.

FIG. 6 shows another embodiment. In this case, the upper plate 5 is placed on the stepped portion 3 of the main body 1, and the upper plate 5 is formed separately on the upper plate 5 and has a space 71 inside. An auxiliary upper plate 7 having a substantially convex cross section is placed, and its edge portion 72 is integrally fixed to the upper plate 5 between the step portion 3 and the curl processing portion 6 by curling the opening edge 13. ..

According to the above construction, a space 71 is formed between the upper plate 5 and the auxiliary upper plate 7 of the main body 1, and the space 71 is used to make a supplementary product, for example, a "bonus" of a product. It is also possible to store the auxiliary upper plate 7 with a transparent material, and to store a three-dimensional ornament such as an artificial flower in this space 71 in order to improve the design of the container.

FIG. 7 shows another embodiment. In this case, instead of the auxiliary upper plate 7, an annular auxiliary edge 8 having a substantially L-shaped cross section is attached. Upper edge 8
An auxiliary lid 9 formed separately is detachably attached to the unit 1.

According to this embodiment, as in the embodiment shown in FIG. 6, the space 82 formed between the upper plate 5 and the auxiliary lid 81.
In addition to being able to store various items by utilizing the space 82, the space 82 can be used as a second storage section separated from the can container, and in the space 82, for example, a tool related to the product of the can container, Items having functions, such as tableware or instructions, can be stored. The main body 1 of the lid body
Is not limited to a cylindrical shape, and may have any shape such as a square shape or an elliptical shape as shown in FIG.

[0015]

As described above, according to the method for manufacturing the lid of the can container of the present invention, the main body forming the lid has the opening formed on the upper surface by the drawing and drawing process of the metal plate press machine, and its rising. An inwardly constricted part is formed at the top of the part,
The step portion is integrally formed. The stepped portion and the curl are processed when the separately processed upper plate is placed on the stepped portion through the opening on the upper surface without mounting a separate component and the opening edge of the upper portion is curled. The upper plate is clamped between the processing parts and can be easily fixed. Further, the upper plate can be freely changed, which allows the appearance of the lid body to be easily changed without increasing the number of manufacturing steps.

Further, according to the structure of the lid of the can container of the present invention, since the step portion is integrally formed when the main body is processed, the upper plate for another processing can be stably held on the step portion. Can
The upper plate can be securely fixed by curling the opening edge or the like. This upper plate can be freely changed depending on the product to be stored in the can container. For example, a plate on which thick leather, fur or cloth is pasted is used as the upper plate, or three-dimensional unevenness is formed by pressing. If you use a plate, you can make a lid with a high-quality texture. Conventionally, it has been considered to attach leather, fur, cloth, etc. to the lid in order to give a texture and a high-grade feeling, but since the peripheral edge of the leather, fur, cloth, etc. is exposed and there is thickness. It had a drawback that it looked bad and easily peeled off. On the other hand, according to the present invention, since the peripheral portion of the leather, the fur, the cloth or the like attached to the upper plate is pressed by the curling portion, the peripheral portion is exposed and the appearance is different from the conventional case. It won't get worse,
It looks good and doesn't come off. If this upper plate is made of a transparent plate such as an acrylic plate, the contents can be seen through the upper plate with the lid attached to the can container, and in addition to the function as a can container, it can be displayed in stores. In this case, the display effect of the product can be improved.

[Brief description of drawings]

FIG. 1 is a cutaway side view of a main part of a lid of a can container showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a second step of the manufacturing process of the lid of the can container of the present invention.

FIG. 3 is a perspective view showing a third step of the manufacturing process of the lid of the can container of the present invention.

FIG. 4 is a perspective view showing a fourth step of the manufacturing process of the lid of the can container of the present invention.

FIG. 5 is a perspective view showing a completed state of the manufacturing process of the lid of the can container of the present invention.

FIG. 6 is a cutaway side view of a main part of a lid of a can container showing another embodiment of the present invention.

FIG. 7 is a cutaway side view of a main part of a lid of a can container showing another embodiment of the present invention.

FIG. 8 is a perspective view of a lid of a can container showing another embodiment of the present invention.

[Explanation of reference numerals] 1 main body 2 upper surface 3 step portion 4 edge portion 5 upper plate 6 curl processing portion 7 auxiliary upper plate 8 auxiliary edge 9 auxiliary lid 12 opening

Claims (2)

[Claims] 1. A lid of a can container having the following requirements. (A) The main body is made of a metal plate, and an opening is formed on the upper surface thereof. (B) An inwardly bent step is formed on the upper part of the main body. (C) The upper plate is sandwiched between this step and the curled portion of the opening. 2. A method of manufacturing a lid of a can container, which comprises the following steps. (A) A first step in which a main body is formed by pressing a metal plate. (B) A second step in which the upper surface of the main body is punched out. (C) A third step in which a step portion is formed on the upper portion of the main body due to an inward constriction. (D) A fourth step in which an upper plate of another component is placed on the stepped portion of the main body and is fixed by curling.