JPH0826243A - Stainless container with protector and its manufacture - Google Patents

Abstract

PURPOSE:To prevent deformation of a stainless container with a rubber protector. CONSTITUTION:A container body 1 is composed of a first molding 2 and a second molding 3, each molding comprising an end plate (upper end plate 4 or lower end plate 6) and a drum (upper drum 5 or lower drum 7), and the container body 1 is formed by joining the upper and lower drums 5, 7. To each of the upper and lower end plates 4, 6 a reinforcing metal plate 9 is fixed to an extent covering the end plate and part of the drum. In the reinforcing metal plate 9 radial reinforcing ribs or at least one circular one are formed and a rubber protector 10 prepared preliminarily by injection molding is attached in a manner of overlying part of the reinforcing ribs. The formation of the reinforcing ribs in circles or radially augments the strength of the reinforcing metal plates 9 and an external force acting upon the rubber protector 10 is absorbed and prevented from affecting the end plates of the container body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stainless steel container for beer and other beverages having a rubber protector and a method for manufacturing the same.

[0002]

2. Description of the Related Art A stainless steel container is usually used as a filling container for transporting various beverages such as draft beer, and annular protectors are attached to the upper and lower peripheral edges of the container body. The protector covers the periphery of the upper mirror and the lower mirror forming the upper and lower bottoms of the container body to protect the mirror surface, and the lower protector serves as a stand when the container body is fixed, and the upper protector is When stacking, it serves as a support seat that supports the upper container.

Conventionally, stainless steel, which is the same material as the container body, has been mainly used for the protector. The stainless protector is generally welded to the upper and lower peripheral edges of the deep-drawn stainless steel container body, but the upper and lower mirrors are welded to the upper and lower inner peripheral surfaces of the stainless steel cylinder. There is also an example in which a protector portion is formed by projecting above and below the upper and lower mirrors.

In any case, when the protector is made of stainless steel, it is robust and beautiful, but the container becomes a considerable weight when it is filled with draft beer, for example. For this reason, if you accidentally drop the container during loading or unloading during transportation, or if it collides violently with the floor, it may not only make noise but also the container may be deformed or damaged. In particular, when the containers are inclined and dropped, the protector is locally deformed and cannot be stably placed in a normal upright posture, which makes stacking difficult.

[0005]

To solve the above problems, it is conceivable to use an annular rubber protector as the protector. An example in which rubber protectors are actually attached above and below the container body is shown in Registered Design No. 635034 (conveying barrel) (see FIG. 7). In FIG. 7, when a rubber protector is used, the annular portion needs to have a certain thickness in order to maintain the strength. Therefore, the protector 31 is provided on the smooth curved surfaces of the upper mirror 33 and the lower mirror 34 of the container body 32. There is no choice but to adhere to. Figure 7
The barrel shown in (1) is a relatively elongated container, and since the areas of the upper mirror 33 and the lower mirror 34 are also small, it does not seem to cause any problems in terms of strength. However, in the beer barrel, the container body 3
Since 2 is formed by deep drawing of a stainless steel plate, the body of the container is work hardened and its strength is remarkably increased, but it becomes a mounting portion for the rubber protector, and there is almost no distortion on the surface of the lower mirror. The strength of the stainless steel plate before processing does not change and does not change.

For this reason, when the rubber protector 40 shown in FIG. 8 is attached to the surface of the lower mirror while the strength is low, the load is applied from the vertical direction due to stacking, and the rubber protector 40 receives an impact due to falling or the like. Then, the surface 41 of the upper mirror or the lower mirror of the mounting portion is depressed like 41 ', and depending on the degree of impact, the mirror surface of the central portion where the rubber protector 40 is not attached is depressed, resulting in the depression. Depending on the degree, the shape of the rubber protector may collapse and the stacking may become impossible, or the posture may be unstable.

Therefore, an object of the present invention is to further improve a stainless steel container and a stainless steel container with a protector in which the mirror surface of the mounting portion of the rubber protector is not easily deformed even when a larger external force acts on the mirror surface through the rubber protector. It is to provide a manufacturing method.

[0008]

In order to achieve the above object, according to the stainless steel container with a protector of the present invention, the mirror forming the upper bottom and the tubular body are made of stainless steel plate integrally formed by cold working. And a second molded body made of a stainless steel plate in which the mirror forming the lower bottom and the cylindrical body are integrally molded by cold working.
A hollow container body is formed by joining these cylindrical body parts to each other so as to align in the axial direction, and at least one of the first molded body and the second molded body of the hollow container body is provided with one or A metal reinforcing plate made of stainless steel having a plurality of reinforcing ribs is joined to the molded body over the main part of the mirror surface to at least a part of the cylindrical body part or a part of the mirror surface, and the metal reinforcing plate is joined. A rubber protector for supporting or stacking the hollow container body is adhered to the plate.

In this case, it is preferable that the container body has a substantially cylindrical shape, and that the reinforcing rib provided on the substantially circular metal reinforcing plate is formed of an annular corrugated shape, an annular step, a radial ridge, or a combination thereof. Further, it is desirable that the rubber protector is bonded to at least the portion of the metal reinforcing plate that extends from the peripheral portion of the tubular body portion of the hollow container body to the mirror surface.

In order to achieve the above object, according to the method for manufacturing a stainless steel container with a protector according to the present invention, a first molded body made of a stainless steel plate in which a mirror surface forming an upper bottom and a cylindrical body are integrally molded, Hollow container by joining a second molded body made of a stainless steel plate in which a mirror surface forming a lower bottom and a tubular body are integrally formed to each other so that the tubular body is axially aligned with each other In a method of manufacturing a stainless steel container with a protector, which comprises a main body and a metal reinforcing plate made of stainless steel, to which a rubber protector for supporting or stacking the hollow container main body is attached,
A step of molding a metal reinforcing plate having one or a plurality of reinforcing ribs by pressing or the like; a step of adhering the rubber for the protector to the metal reinforcing plate by injection molding; At least one of the first molded body and the second molded body of the main body, and a step of joining the main portion of the mirror surface to at least a part of the tubular body portion or a part of the mirror surface. And

[0011]

According to the stainless steel container with a protector of the present invention, the external force applied to the rubber protector is transmitted to the metal reinforcing plate and dispersed, so that a large external force does not act directly on the upper mirror or the lower mirror, and therefore the mirror surface The depression of a specific part of is blocked.

[0012]

Embodiment 1 Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings. 1 (a) and 1 (b) show a beer barrel for transportation to which the present invention is applied. In the case of the embodiment, the container body 1 is a combination of the first molded body 2 and the second molded body 3, both of which are molded by deep drawing cold working of an austenitic stainless steel plate. The first molded body 2 is integrally molded into a shape including the upper mirror 4 and the cylindrical upper body portion 5,
The second molded body 3 is integrally molded into a shape including the lower mirror 6 and the cylindrical lower body portion 7. The upper and lower body parts 5, 7 are joined together at the opening edge of the cylinder to form the body part of the container body 1,
The upper mirror 4 is assembled into a hollow container having the upper bottom and the lower mirror 6 as the lower bottom. A base 8 is attached to the center of the upper mirror 4. The above structure is the same as that of the conventional container body, and is the same in the other embodiments.

In the first embodiment, the metal reinforcing plate 9 to which the annular rubber protector 10 is attached is joined to the mirror surface of the lower mirror 6 (and the upper mirror 4) by welding. As for the lower mirror 6, as shown in FIG. 1 (c), a substantially circular metal reinforcement covering the area from the vicinity of the center (excluding the central protrusion 6 a) to the lower edge of the lower body 7 The plates 9 are joined together. The welding to the lower mirror 6 of the metal reinforcing plate 9 is performed by using the central opening 9
It is performed at a position close to a and a rising position 9b on the periphery.

As shown in FIG. 2, the metal reinforcing plate 9 is formed with a plurality of annular and corrugated reinforcing ribs 11 and a plurality of radial ribs 12 at least in the region in contact with the lower mirror 6, and the lower body portion. It has a shape that abruptly rises upward at the peripheral edge that contacts 7. 3A to 3D are schematic views showing the manufacturing process of the stainless steel container according to the first embodiment.
As described above, the hollow container itself formed by joining the first molded body 2 and the second molded body 3 to each other has already been molded.

In FIG. 3 (a), first, a disk for forming the metal reinforcing plate 9 is punched out from the same austenitic stainless steel plate as the container body. Next, in FIG. 3 (b),
Press-mold the disc to punch out the central opening 9a,
The annular rib 11 and the radial rib 12 as described above are formed, and at the same time, the rising portion 9b of the peripheral portion is formed. The ribs provided on the metal reinforcing plate 9 have a wave shape or a beam shape (radial shape).
However, the shape is not limited to the above, and various shapes such as a stepped shape or a combination thereof can be adopted.

The press working of the metal reinforcing plate 9 as described above is performed by a combination of an upper die and a lower die by a conventionally known method, but it is conventionally known that a work hardening region becomes a work hardening region due to a rib working strain. As you can see. FIG.
In (c), the annular rubber protector 10 is the metal reinforcing plate 1.
It is attached to 1. When the rubber protector 10 is attached, an adhesive is applied to the surface of the metal reinforcing plate 9 opposite to the mirror surface of the container, and the injection mold 15 is assembled as shown in FIG. Sulfur rubber 16 is injected and directly joined to the metal reinforcing body 9 as it is. At that time, the rubber 16 is formed so as to extend from the peripheral edge rising portion 9b of the substantially circular metal reinforcing plate 9 to the portion corresponding to the mirror surface. Further, the rubber 16 is bonded to at least a part of the annular rib 11 and / or the radial rib 12.

The procedure for processing the metal reinforcing plate 9 for joining to the upper mirror 4 and attaching the rubber protector 10 is exactly the same as for the lower mirror 6. An opening 18 used as a handle during transportation is formed in a peripheral portion of the rubber protector 10 attached as an upper protector. Also,
The opening 18 also serves as a drainage hole for removing water on the mirror surface.

The rubber protector 10 mounted as the lower protector is provided with an opening 19 for draining water to remove water on the mirror surface when the rubber protector 10 is stored in an inverted posture. In FIG. 4, the unvulcanized rubber 16 is heated, and after its curing, the injection mold 15 is released from the mold to obtain the beer barrel shown in FIG.
It should be noted that the container body can be assembled by welding the intermediate body between the first molded body and the second molded body. Further, as in the second embodiment, one of the upper and lower rubber protectors may be replaced with a stainless protector.

When a rubber protector is used as one of the upper and lower protectors, it is customarily applied to the lower protector which serves as a stand for the container, but the rubber protector can also be used as the upper protector. When the rubber protector is used only for the lower protector as in the second embodiment, the upper protector has an annular shape at the upper edge of the upper body portion 5 of the first molded body 2 as shown in FIGS. 5 (a) and 5 (b). The stainless steel protector 20 is welded to cover the periphery of the upper mirror 4, and the metal reinforcing plate 9 to which the rubber protector 10 is attached is adhered across the lower mirror 6 of the second molded body 3 and the lower edge of the lower body portion 7. To do. The portion indicated by A in FIG. 5 is the same as that in FIG. According to the second embodiment, since the upper protector is the stainless protector, the load from the upper protector is not applied on the surface of the upper mirror. Therefore, a metal reinforcing plate is attached to the mirror surface to increase the strength. No need to raise.

According to the first or second embodiment, since the rubber protector is attached to the mirror surface with the metal reinforcing plate interposed, the external force applied through the rubber protector is dispersed to the metal reinforcing plate 9, so that the container body is easy. In addition, the rubber protector is joined to the rib portion of the metal reinforcing plate 9 so that the adhesive strength is increased and the rubber protector is not peeled off. The terminal on the inner edge of the protector can be treated beautifully.

6 (a) and 6 (b) show the imprinted shape of the metal reinforcing plate 9. As shown in FIG. The annular rib 11 is the central opening 9a of the metal reinforcing plate 9.
From the vicinity of to the vicinity of the peripheral portion are arranged concentrically. Similarly, a large number of radial ribs 12 are arranged so as to extend in the radial direction from the vicinity of the central opening 9a of the metal reinforcing plate 9 to the vicinity of the peripheral portion. In this way, the metal reinforcing plate 9
By combining a plurality of annular ribs 11 and a plurality of radial ribs 12, it is possible to remarkably increase the strength. The metal reinforcing plate 9 having such annular ribs 11 and radial ribs 12 can be formed by a well-known method such as press working. In addition, the peripheral portion of the metal reinforcing plate 9 is moved to a rising portion 9b so as to come into contact with the lower body portion 7 of the container body from a portion where the rib 11 or 12 does not exist.

Although the embodiments have been described in detail with reference to the accompanying drawings of the present invention, the present invention is not limited to the above embodiments, and various embodiments within the spirit and scope of the present invention, It should be noted that variations, modifications, etc. are possible. For example, in the above-described embodiment, the metal reinforcing plate 9 is arranged so as to extend from the main part of the mirror surface to the cylindrical body, but the metal reinforcing plate 9 may be attached to a part of the mirror surface.

[0023]

As described above, in the present invention, the rubber protector is attached to the mirror surface of the stainless steel container with the metal reinforcing plate interposed, and the mirror surface has the double structure, so that the strength is improved.
Even if an external force is applied to the rubber protector, the mirror surface is prevented from being depressed. Further, since the mirror surface of the stainless steel container has no processing distortion or the like, the cleaning performance of the mirror surface portion does not deteriorate even when the inside of the container is cleaned using a cleaning machine.

Furthermore, since the rubber protector is connected to the metal reinforcing plate by injection molding, not to the container body, a dedicated large-sized rubber injection molding machine is not required, and the production is simplified. In addition, the price can be reduced. Also, if the rubber protector deteriorates due to long-term use, the stainless steel container body will not be wasted and can be maintained and maintained because the metal reinforcing plate to which the rubber protector is attached can be replaced with a new one. It is also advantageous in terms of aspects.

[Brief description of drawings]

1A is a plan view showing a part of a container of Example 1 obtained by the method of the present invention, FIG. 1B is a sectional view, FIG.
FIG. 1 (c) is an enlarged view of a portion A of FIG. 1 (b) showing a mounting portion of a rubber protector and a metal reinforcing plate.

FIG. 2 is a plan view of a metal reinforcing plate.

3 (a) to 3 (d) are views showing a manufacturing process of a stainless steel container with a protector according to the method of the present invention.

FIG. 4 is a diagram showing a process of attaching a rubber protector to a metal reinforcing plate.

5A is a plan view showing a part of a container showing Embodiment 2 of the present invention, and FIG. 5B is a partial cross-sectional front view.

FIG. 6A is a plan view showing an example of a metal reinforcing plate,
(B) is a longitudinal sectional view.

FIG. 7 is a vertical sectional view of a carrying barrel shown in Registered Design No. 635034.

8 is an enlarged view showing a rubber protector mounting portion of the carrying barrel of FIG. 7. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Container main body 2 ... 1st molded object 3 ... 2nd molded object 4 ... Upper mirror 5 ... Upper body part 6 ... Lower body part 7 ... Lower body part 8 ... Base 9 ... Metal reinforcement plate 9a ... Center opening 9b ... Rim rising Part 10 ... Rubber protector 11 ... Corrugated rib 12 ... Radial rib 15 ... Injection mold 16 ... Unvulcanized rubber 18 ... Opening 19 ... Opening 20 ... Stainless protector

Claims (10)

[Claims] 1. A first molded body made of a stainless steel plate in which a mirror forming an upper bottom and a tubular body are integrally formed by cold working, and similarly, a mirror forming a lower bottom and a tubular body. A second stainless steel plate integrally formed by cold working
A hollow container body is formed by joining a molded body to each other so that these cylindrical barrel portions are aligned in the axial direction, and at least one of the first molded body and the second molded body of the hollow container body. In, a metal reinforcing plate made of stainless steel having one or a plurality of reinforcing ribs is joined to the molded body over the main part of the mirror surface to at least a part of the cylindrical body part or a part of the mirror surface. A rubber protector for supporting or stacking the hollow container body is adhered to the metal reinforcing plate, which is a stainless container with a protector. 2. The stainless steel container according to claim 1, wherein the reinforcing ribs provided on the metal reinforcing plate are corrugated, stepped, or a combination thereof. 3. The container main body has a substantially cylindrical shape, and the reinforcing ribs provided on the substantially circular metal reinforcing plate are formed of an annular corrugated shape, an annular step, a radial protrusion, or a combination thereof. Item 1. The stainless steel container according to Item 1. 4. The stainless steel container according to claim 1, wherein at least a part of the reinforcing rib is formed on a surface of the metal reinforcing plate to which the rubber protector is bonded. 5. The container body has a substantially cylindrical shape, and the reinforcing ribs provided on the substantially circular metal reinforcing plate are annular corrugations, annular steps, radial ridges, or a combination thereof. The stainless steel container according to claim 4, wherein at least a part of the reinforcing rib is formed on a surface to which the rubber protector is adhered. 6. The rubber protector is joined to at least a portion of the metal reinforcing plate that extends from the peripheral portion of the tubular body portion of the hollow container body to the mirror surface. The stainless steel container according to any one of 1. 7. A first molded body made of a stainless steel plate in which a mirror surface forming an upper bottom and a cylindrical body are integrally molded, and a stainless steel in which a mirror surface forming a lower bottom and a cylindrical body are integrally molded. A rubber protector for supporting or stacking the hollow container main body on the hollow container main body by joining the second molded body made of a steel plate to each other so as to align the cylindrical body parts in the axial direction. In a method for manufacturing a stainless steel container with a protector, which is formed by joining metal reinforcing plates made of stainless steel to which is attached, a step of forming a metal reinforcing plate having one or a plurality of reinforcing ribs by pressing or the like; A step of adhering the rubber for the protector to a plate by injection molding, and the metal reinforcing plate is provided on at least one of the first molded body and the second molded body of the hollow container body from the main part of the mirror surface to a cylindrical shape. A method of manufacturing a stainless steel container with a protector, the method comprising the step of joining at least a part of a body or joining a part of a mirror surface. 8. The method of manufacturing a stainless steel container according to claim 7, wherein in the step of forming the metal reinforcing plate, a reinforcing rib formed of a corrugated shape, a step, or a combination thereof is formed simultaneously with the forming. . 9. The container main body has a substantially cylindrical shape, and a plurality of reinforcing ribs formed of an annular corrugated shape, an annular step, a radial protrusion, or a combination thereof are formed simultaneously with the formation of a substantially circular metal reinforcing plate. The method for manufacturing a stainless steel container according to claim 7, wherein. 10. The step of adhering the protector rubber to the metal reinforcing plate is performed by injection molding so that at least a part of the protector rubber is joined to at least a part of the reinforcing rib. The method for manufacturing a stainless steel container described in.