JP2003146333A - Beverage can and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beverage can in which alignment in position of a drinking port with a dent is easy so as to improve production efficiency, and a manufacturing method therefor. SOLUTION: The manufacturing method for a beverage can comprises a first process of machining to punch a flat metallic plate thereby forming a developed plate 12 whose outer periphery becomes a barrel 2 to surround a top plate 3, a second process of deep-drawing the developed plate 12 thereby integrally forming the top plate 3 and the cylindrical barrel 2 with its upper end surface closed by the top plate 3, a third process of providing a drinking port 7 on the top plate 3, correspondingly locating the drinking port 7 on the barrel 2 and in addition providing a dent 10 where a position of the drinking port 7 can be recognized by a finger touch, a fourth process of providing a finger catch 9 for opening the drinking port 7 at a predetermined position on an external surface of the top plate 3, and a fifth process of filling a beverage I in the barrel 2 and also seaming, thereby closing an opened lower end surface of the barrel 2 with a bottom plate 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beverage can which is filled with a drink such as coffee or juice and sold, and in particular, has a recessed portion on the outer peripheral surface of the body portion where the position of the drinking mouth can be recognized by the feel of a finger. The present invention relates to a provided beverage can and a manufacturing method thereof.

[0002]

2. Description of the Related Art Generally, a beverage can of this type is made of aluminum or steel, its upper and lower end faces are closed, and its body is formed in a cylindrical shape. A finger hook is provided for opening the drinking mouth. When the user wants to drink the beverage, he holds the torso with his hand and pulls the finger hook to open the drinking mouth.

The body of the beverage can has a cylindrical shape with no irregularities, and the position of the mouth cannot be known only by holding the body by hand. Therefore, for example, when you place a drinking can that you are drinking in a dark place such as a movie theater or while you are driving a car and try to pick it up again by groping without looking at the drinking can, the position of the drinking mouth is sideways. There is a case where the person drinks the beverage as it is, without being aware of it, and the spilled beverage pollutes clothes.

In view of this point, for example, actual Kaihei 4-1062
As disclosed in Japanese Laid-Open Patent Publication No. 31-31 or Japanese Utility Model Laid-Open No. 6-18248, the position of the drinking mouth can be easily adjusted with the feel of a finger by positioning it on the outer peripheral surface of the body of the beverage can in correspondence with the drinking mouth of the upper end surface. Beverage cans have been developed with recognizable recesses.

[0005]

By the way, a general beverage can is made of aluminum or steel. Then, the body is formed into a cylindrical shape with both end surfaces open, and then,
The bottom plate part is caulked and attached to the lower end face, the lower end face is closed by the bottom plate part, and after the predetermined amount of beverage is filled in the body part, the top plate part is also caulked to the upper end face of the body part. It is processed and mounted, and the top surface is closed by the top plate to seal the inside. In recent years, there has been a beverage can in which the body portion and the bottom plate portion are integrally formed by deep drawing, but the top plate portion of this type of beverage can is formed separately from the body portion.

As described above, when the body portion and the top plate portion are separately molded, when the top plate portion is attached to the body portion in the process of manufacturing a beverage can, the recessed portion of the body portion and the top plate portion are drunk. Although a work process of positioning the mouth and the mouth in correspondence is required, it is not easy to align the recessed portion and the drinking mouth that have already been processed due to the circular shape of the top plate, etc. There is a problem that it costs a lot and production efficiency is poor.

Therefore, the present invention has been made to solve the above-mentioned problems, and provides a beverage can and a manufacturing method thereof, which facilitates the positioning of the drinking mouth and the recess and improve the production efficiency. That is the purpose.

In order to achieve such an object, a beverage can according to the present invention comprises a cylindrical body portion and a top plate portion integrally formed with the body portion by deep drawing and closing the upper end surface of the body portion. ,
A bottom plate part formed separately from the body part and closing the lower end surface of the body part, a drinking port provided on the top plate part, and an opening provided on the outer surface of the top plate part for opening the drinking port And a recess provided on the outer peripheral surface of the body portion corresponding to the drinking mouth, and the position of the drinking mouth can be recognized by the feel of the finger. In this way, the top plate and the body are integrally formed by deep drawing, and the top plate has a drinking mouth,
Further, since the concave portion is provided on the outer peripheral surface of the body portion so as to be positioned corresponding to the drinking mouth, the positioning of the drinking mouth and the concave portion can be easily performed. It is preferable that the recess be linearly provided on the outer peripheral surface of the body along a line parallel to the central axis thereof.

The method of manufacturing a beverage can includes a first step in which a flat plate made of metal is subjected to a punching process to form a development plate which surrounds the top plate portion and whose outer peripheral portion serves as a body portion. A second step of integrally forming the top plate part and the cylindrical body part whose upper end surface is closed by the top plate part by subjecting the expansion plate to deep drawing; And a third step of providing a concave portion on the body portion corresponding to the drinking mouth so that the position of the drinking mouth can be recognized by the feel of a finger, and at a predetermined position on the outer surface of the top plate portion. A fourth step of providing a finger hook for opening the drinking mouth,
A fifth step of closing the open lower end surface of the body with a bottom plate by filling the body with a beverage and subjecting the body to caulking.

In this way, the top plate part which is integrally formed with the body part by deep drawing and closes the upper end surface of the body part, and the body part, respectively, has a mouth and a finger corresponding to the mouth. Since the recessed portion is provided so that the position of the drinking mouth can be recognized by touch, the positioning of the drinking opening and the recessed portion can be facilitated, thereby improving the production efficiency.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a beverage can and a manufacturing method thereof according to the present invention will be described below with reference to the drawings. 1 is a perspective view of a beverage can, FIG. 2 is a side sectional view of the same, and FIG.
It is an X-ray sectional view. In the figure, A is a beverage can filled with a beverage I such as coffee or juice. The can body 1 is made of aluminum or steel,
Mainly a cylindrical body portion 2, a top plate portion 3 integrally formed with the body portion 2 by deep drawing and closing the upper end surface of the body portion 2, and the body portion 2 are formed separately from each other. The bottom plate 4 closes the lower end surface of the body 2. The top plate portion 3 is provided with an annular convex portion 5 protruding upward on the outer peripheral edge thereof. This is to prevent the beverage I from spilling from the outer peripheral edge of the top plate portion 3 when drinking the beverage I so that the beverage I can easily drink. The bottom plate portion 4 is integrally attached to the lower end edge of the body portion 2 by caulking to close the lower end surface.

A notch 6 is formed on the outer surface of the top plate portion 3.
A drinking spout 7 that is closed by the palate 6 by engraving a is provided. On the outer surface of the top plate portion 3 near the drinking mouth 7, one end overlaps a part of the palate 6 and the other end has a through hole 8 into which a fingertip is inserted.
Is caulked. Insert your fingertip into the opening 8,
By causing the other end of the finger hook 9 to push the palate 6 from above, one end of the pawl 6 is pushed inward to open the drinking mouth 7.

On the other hand, the outer peripheral surface 2a of the body portion 2 is located at a position corresponding to the mouthpiece 7, that is, on the side close to the mouthpiece 7 as shown in FIG. The concave portion 1 is positioned on a line L passing through the center of the body and the center of the body portion 2 so that the position of the mouth 7 can be recognized by the feel of a finger.
0 is provided. The concave portion 10 has a central axis O of the body 2.
It is provided linearly along a line parallel to and has a lateral width enough to fit a fingertip, and its lateral cross section has an arcuate shape that is recessed inward. The recess 10 has a length that is approximately two thirds of the height of the body 2, and is provided closer to the top plate 3 side. The shape of the recessed portion 10 is not only linearly formed as in the present embodiment, but also the depressions of various shapes such as a circle, a triangle, and a square are scattered in one or a linear shape at positions corresponding to the drinking mouth 7. Alternatively, other shapes may be used as long as the presence thereof can be recognized by the feel of the finger, provided that it is recessed inward. In this way, since the recess 10 is recessed inward and does not project outward from the outer peripheral surface 2a of the body portion 2, the beverage can A can rotate without trouble and can be arranged in the vending machine as in the conventional case.

The beverage can A according to the present invention has the above-mentioned constitution, and the top plate 3 has a drinking spout 7, and the body 2 has an outer peripheral surface 2a.
Since the concave portion 10 is provided at the position corresponding to the drinking mouth 7, the position of the drinking mouth 7 and the concave portion 10 can be easily aligned, and moreover, they can always be accurately positioned in correspondence with each other. Therefore, for example, a beverage can A that has been drunk in a dark place such as a movie theater or while driving a car.
When the user holds the beverage can A and tries to pick it up again by hand without looking at the beverage can A, the finger holding the beverage can A touches the recess 10 to immediately recognize the position of the drinking mouth 7, You can apply the mouthpiece 7 to your mouth without making a mistake. Therefore, it is possible to prevent the beverage from being accidentally emptied.

Next, a method of manufacturing the beverage can A according to the present invention will be described with reference to FIGS. 4 and 5 show the first step. In the figure, reference numeral 11 denotes a metal strip plate made of aluminum, which surrounds the top plate portion 3 and the outer peripheral portion of which is the body portion 2.
The lateral width is set so as to obtain a width that satisfies the following condition, and punching is performed on the lateral width to continuously form a development plate 12 described later. FIG. 5 shows a circular expansion plate 12 punched from the metal strip 11. The deploying plate 12 is provided with a portion 3X corresponding to the top plate portion 3 at the center thereof, and a portion 6 corresponding to the palate 6 at a predetermined position thereof.
X is provided. Then, the portion 3 that corresponds to the top plate portion 3
The outer peripheral portion of X becomes a portion 2X that abuts on the body portion 2.

6 and 7 show the second step.
In the figure, 13 is a female die of the deep drawing machine 15, and 14 is a male die that freely comes into contact with and separates from the female die 13. Female mold 13
Is provided with a cylindrical cavity 16 for molding the body 2 on the machined surface 13a thereof, and an annular recess 17 for molding the annular projection 5 along the peripheral edge is provided on the bottom surface thereof. It is provided. On the other hand, the male mold 14 is similarly formed into a cylindrical shape having a predetermined length, and an annular protruding portion 18 that intervenes in the annular concave portion 17 is provided around the lower end outer peripheral edge.

Then, the developing plate 12 is set on the machined surface 13a of the female mold 13, and then the male mold 14 is moved so as to enter the cavity 16 of the female mold 13 and then the developing plate 12 is moved.
Deep draw. Thereby, as shown in FIG. 7, the intermediate can body 19 in which the top plate portion 3 and the body portion 2 are integrated is molded. In addition, the peripheral edge of the opened lower end surface 19a is cut and aligned for caulking the bottom plate portion 4. Before proceeding to the next step, the outer peripheral surface 19b of the intermediate can body 19 is
The desired print is applied to.

8 and 9 show the third step.
In the figure, reference numeral 20 denotes a press working machine 21, which is a cylindrical female mold in which the intermediate can body 19 is fitted and set.
Similarly, 22 is a first male mold for freely contacting and separating from the upper end surface of the cylindrical female mold 20 to mold the drinking spout 7 in the intermediate can body 19, 23
Is a second male mold for freely contacting with and separating from one side of the outer peripheral surface 20a of the cylindrical female mold 20 to mold the recess 10 in the intermediate can body 19.

The tip end of the projecting rod 24 is projected at the center of the upper end surface of the cylindrical female die 20, that is, the surface 20b facing the first male die 22. The protruding rod portion 24 is for molding the hollow protrusion 29 in which the finger hooking portion 9 is attached to the top plate portion 3, is molded separately from the cylindrical female die 20, and is further formed by the cylindrical female die 20. It is possible to move forward and backward freely. Then, when the hollow protrusion 30 is formed, the tip of the protruding rod portion 24 is protruded by a predetermined dimension outside the facing surface 20 b of the cylindrical female die 20. Further, when the finger hook portion 9 is caulked and attached to the hollow protrusion 30, the tip end portion thereof is immersed in the facing surface 20b. Further, a concave recess 25 is linearly provided on one side of the outer peripheral surface 20a of the cylindrical female die 20 along a line parallel to the central axis thereof. The concave portion 25 is provided at a predetermined position from the facing surface 2
It is provided up to the outer peripheral edge of 0b. In this way, the concave portion 25
Is provided up to the outer peripheral edge of the facing surface 20b because the recess 10
This is so that the intermediate can body 19 after being molded can be removed from the cylindrical female die 20.

The first male die 22 is provided with a pressing step portion 26 on a surface 22a facing the cylindrical female die 20. The pressing step portion 26 intervenes inside the annular convex portion 5 of the intermediate can body 19 set in the cylindrical female die 20. Then, a small hole 27 into which the tip end portion of the protruding rod portion 24 intervenes is provided on a surface 26a of the pressing step portion 26 facing the cylindrical female die 20.
Further, in the vicinity of the small hole 27, annular facing teeth 28 for molding the drinking spout 7 by the cut 6a are provided in the facing surface 26a. As shown in FIG. 9, the second male die 23 has a cylindrical female die 20 having a surface 23 a facing the cylindrical female die 20.
Is recessed in an arc shape so as to match the outer peripheral surface 20a of
A projecting portion 29 that intervenes in the recessed portion 25 is provided at the center thereof.

The positions of the projecting teeth 28 and the projecting portions 29 are selected so that the drinking spout 7 and the recessed portion 10 are accurately aligned with each other in the intermediate can body 19. And
The intermediate can main body 19 formed in the second step is set in the cylindrical female die 20, and in this state, the first male die 22 is pressed against the facing surface 20b of the cylindrical female die 20 and pressed, and almost simultaneously with this. The second male mold 23 is attached to the outer peripheral surface 20a of the cylindrical female mold 20
Press to press. As a result, the hollow protrusion 30 is provided at the center of the outer surface of the top plate portion 3 of the intermediate can body 19, and the drinking mouth 7 covered with the palate 6 is formed in the vicinity thereof. A linear recess 10 is provided on the outer peripheral surface 19b of the intermediate can body 19 at a position corresponding to the drinking port 7 and along a line parallel to the central axis O of the intermediate can body 19. As described above, since the top plate portion 3 and the body portion 2 are integrally formed, the drinking spout 7 and the recess 10 corresponding thereto can be easily provided in the intermediate can body 19. The press working is performed on the outer peripheral surface 20a of the cylindrical female die 20 first,
The facing surface 20b of the cylindrical female die 20 may be performed later.

In this state, the process proceeds to the fourth step as it is, but at this time, the tip of the rod 24 is depressed into the facing surface 20b of the cylindrical female die 20. FIG. 10 shows the fourth step. That is, with the intermediate can body 19 set in the cylindrical female die 20, the stop hole 31 is inserted into the hollow protrusion 30 so that one end overlaps with a part of the palate 6 and the finger is placed on the outer surface of the top plate portion 3. The portion 9 is arranged, and the hollow protrusion 30 is crimped at the tip of the crimping tool 32 to attach the finger hook portion 9. As a result, as shown in FIG. 11, the intermediate can body 19 provided with the spout 7, the finger hook 9 and the recess 10 is molded.

FIG. 12 shows a fifth step, in which the cleaned and sterilized intermediate can body 19 is filled with the beverage I and the intermediate can body 19 is opened at the lower end surface 19a (the lower end surface of the body portion 2). Then, the bottom plate portion 4 is caulked to close the lower end surface 19a. In this way, the beverage can A is manufactured.

As described above, according to the method for manufacturing a beverage can of the present invention, the top plate portion 3 and the body portion 2 which are integrally formed by performing deep drawing are respectively provided with the drinking port 7 and the drinking port 7. Since the drinking spout 7 and the recessed portion 10 corresponding to the drinking spout 7 are provided, the positioning can be easily performed, and the production efficiency can be improved.

In this embodiment, a metal plate made of aluminum is used as the spreading plate 12, but the same effect can be obtained even if a metal plate made of steel is used.

[0026]

As described above, in the beverage can according to the present invention, the top plate and the body which are integrally formed by deep drawing are provided with the mouth and the recess, respectively. It is easy to position the mouth and the recess corresponding to each other, and moreover, there is an effect that the mouth and the recess do not always shift accurately in the corresponding position.

Further, according to the method of manufacturing a beverage can of the present invention, the top plate portion and the body portion, which are integrally formed by performing deep drawing, respectively have a drinking mouth and a position corresponding to the drinking mouth. Since the concave portion is provided, not only the alignment can be easily performed, but also the production efficiency is improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a beverage can according to the present invention.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 4 is a perspective view of a part of the metal strip plate.

FIG. 5 is a plan view of a development plate.

FIG. 6 is a schematic explanatory view showing a state in which a spread plate is subjected to deep drawing.

FIG. 7 is a schematic explanatory view showing a state in which a development plate is subjected to deep drawing.

FIG. 8 is a schematic explanatory view showing a state in which an intermediate can main body is pressed to provide a drinking spout and a recess.

FIG. 9 is a cross-sectional view of a cylindrical female mold and a second male mold.

FIG. 10 is a schematic explanatory view showing a state in which a finger hook is attached to the intermediate can body.

FIG. 11 is a vertical cross-sectional view of the intermediate can body to which a finger hook is attached.

FIG. 12 is a perspective view of the intermediate can body showing a state where the bottom plate is attached.

[Explanation of symbols]

1 can main body 2 torso 2a outer peripheral surface 3 Top plate 4 Bottom plate 7 mouthpiece 9 Finger rest 10 recess 11 Metal flat plate (metal strip) 12 Deployment plate 19 Intermediate can body 19a Lower end surface A beverage can I Beverage O central axis

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) B21D 51/46 B21D 51/46 A B65D 8/04 B65D 8/04 G

Claims (3)

[Claims] 1. A cylindrical body portion, a top plate portion integrally formed with the body portion by deep drawing and closing an upper end surface of the body portion, and the body portion are formed separately from each other. A bottom plate portion that closes the lower end surface of the body portion, a drinking port provided on the top plate portion, a finger hook portion provided on the outer surface of the top plate portion for opening the drinking port, and a position corresponding to the drinking port. And a recessed portion provided on the outer peripheral surface of the body so that the position of the drinking mouth can be recognized by the feel of a finger. 2. The beverage can according to claim 1, wherein the recess is linearly provided on an outer peripheral surface of the body along a line parallel to a central axis thereof. 3. A first step of forming a development plate having a body portion around the top plate portion by punching a flat plate made of metal, and deep drawing the development plate. By performing the above, the second step of integrally molding the top plate portion and the cylindrical body portion whose upper end surface is closed by the top plate portion, and providing a drinking mouth in the top plate portion, In addition, a third step of providing a concave portion on the body portion corresponding to the drinking mouth so that the position of the drinking mouth can be recognized by the feel of a finger; and for opening the drinking mouth at a predetermined position on the outer surface of the top plate portion. A fourth step of providing a finger hook portion, and a fifth step of closing the open lower end surface of the body with a bottom plate by performing caulking while filling the body with a beverage. Production method.