JP4217992B2 - Method for manufacturing deformed container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a deformed container, and more particularly to a method for manufacturing a deformed container related to molding of a barrel portion of a metal container such as an aerosol container or a beverage container.
[0002]
[Prior art]
Conventionally, aerosol containers, beverage containers and the like have been produced only in a cylindrical shape with a straight body in consideration of reduction in manufacturing cost and ease of manufacturing. Recently, however, it has been necessary to unify the design of cosmetic aerosol containers with other containers, and various changes have been made in the appearance of the body of the container due to the demand for a new container design. Therefore, attempts have been made to improve design properties. Conventionally, there have been molding methods that deform the barrel at the time of impact molding, and bulge molding methods that insert urethane rubber into the container, but all of them are expensive to manufacture and require complex equipment. And the manufacturing work was troublesome.
Therefore, as a manufacturing method of a deformed container that eliminates this drawback, there is a manufacturing method shown in FIG. FIG. 9 (X) to FIG. 9 (W) show the process of forming an aerosol container with a deformed body from an aluminum bottomed cylindrical container in the order of the processes. FIG. 9X is a cross-sectional view in which a bottomed cylindrical container 50 is formed by impact-molding aluminum slag. After the container 50 is subjected to trimming, inner surface coating, and outer surface printing, a die 52 and a pilot 53 are used in an opening 51 of the bottomed cylindrical container 50 as shown in FIG. Drawing is performed. Next, a bead portion 54 is formed in the opening 51 (FIG. 9 (Z)). Further, in the final process, the upper and lower body portions of the container 50 were drawn using the molds 56 and 57 (FIG. 9 (W)), and a modified aerosol container was manufactured.
[0003]
[Problems to be solved by the invention]
However, in the conventional manufacturing method shown in FIG. 9, the molds and pilots attached to the turntable of one necking machine can be formed up to the steps shown in FIGS. 9X to 9Z. However, in the process shown in FIG. 9 (W) for enlarging a part of the body portion of the container 50 to form the enlarged diameter portion 55, the dies 56 and 57 are placed above the body portion of the container 50. And it is necessary to perform drawing from both directions below. Therefore, this molding is impossible in a necking machine that can perform drawing in only one direction from the opening 51 to the bottom. Therefore, conventionally, only the process shown in FIG. 9 (W) has been performed in a separate process. However, the work of transferring the container 50 to a separate process after the completion of each process of the necking machine is troublesome. The total time required for
Since the final drawing process in a separate process requires labor, there is a drawback that the manufacturing cost increases as a whole.
[0004]
The present invention has been made paying attention to such a conventional problem, and there is no need to transfer to another process, and all the moldings for deforming the body part can be performed with a single necking machine. Another object of the present invention is to provide a method for manufacturing a deformed container that has a short molding time and is easy to manufacture and low in manufacturing cost.
[0005]
[Means for Solving the Problems]
In order to solve this problem, the means corresponding to the invention according to claim 1 is a diaphragm for reducing the outer diameter of the body of the bottomed cylindrical container after forming the bottomed cylindrical container by impact molding. A method of manufacturing a deformed container in which a series of body forming of processing or expanding diameter expansion processing is performed with a single necking machine, and from the opening end of the body of the container toward the bottom , After drawing the body diameter to reduce the outer diameter, the upper part is subjected to a diameter expansion process to increase the outer diameter of the body part, and further to the upper part is subjected to a redrawing process to reduce the outer diameter of the body part. Next, the opening of the container is necked to narrow the opening, and then a bead is formed at the end of the opening.
[0007]
Corresponding solutions to a second aspect of the invention, in the molding of the body of deformable containers 請 Motomeko 1, wherein the enlarged diameter ratio in the expanded working is characterized in that 7 to 15%.
[0008]
SOLUTION corresponding to the invention of claim 3 wherein is to facilities the molding punching the plate material such as aluminum in a disc shape, a step of deep drawing a disc punched out said the container a cup-shaped container of the cup-shaped after the step of applying drawing and ironing, the container drawing to reduce the outer diameter of the body portion of the cup-shaped, or a series of barrel shaped enlarged diameter working to expand, carried by one of the necking machine The cylindrical body molding is subjected to a drawing process to reduce the outer diameter of the body part toward the bottom part from the opening end of the body part of the cup-shaped container toward the bottom , A diameter expansion process for expanding the outer diameter of the body part is performed above it, a redrawing process for reducing the outer diameter of the body part is performed above it , and then a necking process is performed on the container opening part to open the opening part. stop, thereafter open end, row by forming a flange portion It is characterized in.
[0011]
According to a fourth aspect of the present invention, there is provided a solution means corresponding to the invention according to any one of the first to third aspects, wherein the final processing of the necking machine is performed in addition to the drawing processing and the diameter expansion processing. A rolling element is attached to the process, the rolling element is pressed against the surface of the container, and the rolling element is rolled in the longitudinal, oblique, or circumferential direction of the container, thereby rolling the body. .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show the manufacturing process of the modified aerosol container, and FIGS. 5 to 7 show the manufacturing process of the container for the modified beverage, in the order of the processes. FIG. 1 is a drawing showing a first embodiment of the present invention, and FIG. 1 (A) is a sectional view showing a bottomed cylindrical container 1 made by impact-molding aluminum slag. The bottomed cylindrical container 1 is subjected to trimming processing for trimming the opening 2, cleaning, inner surface, painting, and outer surface printing. Next, FIG. 1B is a cross-sectional view showing a state in which the opening 2 of the bottomed cylindrical container 1 is initially drawn using the mold 3 and the pilot 4. FIG. 1C is a cross-sectional view showing a state in which after the drawing process is performed on the opening 2, the drawing part 5 is left below, and the diameter of the pilot 6 is increased above the drawing part 5. A ratio of expanding the body portion of the container 1 by this diameter expansion process is suitably 7% to 15%. Further, FIG. 1D is a cross-sectional view showing a state in which the drawing portion 5 and the diameter-expanded portion 7 are left below and redrawing is performed using the mold 8 and the pilot 9 above. is there. In the prototype example, a deformed aerosol container in which the outer diameter of the container 1 is 50φ, the outer diameter of the throttle portion 5 is 45φ, the outer diameter of the expanded portion 7 is 50φ, and the expansion ratio is about 11% can be formed. It was. In the final step, as shown in FIG. 1 (E), necking and beading are performed on the opening 2 to form a bead 10. In addition, in the case of the diameter expansion process by the pilot 6 shown in FIG.1 (C), you may guide with the metal mold | die which regulates the enlarged diameter part 7 from the outer side.
[0013]
FIG. 2 is a view showing a first reference example outside the present invention. The difference from the first embodiment is that the diameter of the pilot 13 is increased by inserting a pilot 13 into the opening 12 of the bottomed cylindrical container 11. Processing is performed (FIG. 2 (G)), and then, with the diameter-expanded portion 14 left, drawing is performed using the mold 15 and the pilot 16 above (FIG. 2 (H)). In the final step, the opening 12 is subjected to necking processing and bead processing to form a bead portion 17. Other molding methods are the same as those in the first embodiment.
[0014]
FIG. 3 is a drawing showing a second embodiment of the present invention. The feature of the second embodiment is that the process shown in FIG. 3 (O) is added to the same process as the first embodiment. It is. In the step shown in FIG. 3 (O), the rolling element 18 in which a plurality of balls are housed is attached to the turntable 48 of the necking machine 47 as shown in FIGS. 8 (a) and 8 (b). A plurality of vertical ribs 19 are formed on the body portion of the container 1 by moving in the axial direction from one opening 2. The other processes in FIGS. 3J to 3N are the same as the processes in FIGS. 1A to 1E of the first embodiment.
[0015]
FIG. 4 is a drawing showing a second reference example outside the present invention. The feature of the second reference example is that the process shown in FIG. 4 (T) is added to the same process as the first reference example . Is. That is, a step of forming a plurality of vertical ribs 19 on the body of the container 11 with the rolling elements 18 is added. The other steps of FIG. 4 (P) to FIG. 4 (S) are the same as the steps of FIG. 2 (F) to FIG. 2 (I) in the first reference example . It is also possible to attach inclined ribs or lateral ribs by changing the rolling elements 18.
[0016]
FIG. 5 is a view showing a third reference example outside the present invention, and shows the process of forming a beverage container having a deformed body in the order of the steps. FIG. 5A is a perspective view showing a disc 20 obtained by punching a plate material such as aluminum into a disc shape. FIG. 5A is a cross-sectional view showing a cup 21 formed by drawing a punched disc 20 into a cup-shaped container 21. FIG. 5C shows a process of forming a bottomed cylindrical container 24 by subjecting this cup-shaped container 21 to drawing and ironing using a die ring 23 corresponding to the ironing punch 22. It is sectional drawing shown. Next, FIG. 5D is a cross-sectional view showing a state in which the pilot 26 is inserted inside the opening 25 of the container 24 and diameter expansion processing is performed. The ratio of expanding the diameter is suitably 7% to 15%, like the deformed aerosol container. Further, FIG. 5 (o) is a cross-sectional view showing a state in which the drawing and ironing process is performed using the mold 28 and the pilot 29 in the state where the enlarged diameter portion 27 is left below. Then, in the final step, the opening 25 is subjected to necking and flange-out processing for forming the flange portion 30 to produce a deformed beverage container.
[0017]
FIG. 6 is a drawing showing a fourth reference example outside the present invention. The feature of this fourth reference example is that the process shown in FIG. 6 (s) is added to the same process as the third reference example . It is. That is, a process of forming a plurality of vertical ribs 19 on the body portion of the container 24 with the rolling element 31 is added. In addition, the process of FIG. 6 (ki)-FIG. 6 (si) is the same as the process of FIG. 5 (a)-FIG. 5 (f) in the 3rd reference example . In addition to the vertical ribs 32, inclined ribs, horizontal ribs, and the like may be formed.
[0018]
FIG. 7 is a drawing showing a third embodiment of the present invention, and the steps until the bottomed cylindrical container 37 is formed are the same as those in the third reference example . The feature of this third embodiment is that the die 39 and the punch 40 are used to draw the opening 38 of the container 37 (FIG. 7 (d)), and then the drawing part 41 is left below. The diameter is expanded by the pilot 42 above (FIG. 7 (nu)). Next, redrawing is performed with the mold 44 and the pilot 45 while leaving the enlarged diameter portion 43. Then, the flange portion 46 is formed in the final process. Necking processing and flange processing are the same as the steps of the fifth embodiment. In addition, a plurality of vertical ribs, inclined ribs, horizontal ribs, and the like may be formed on the body portion of the container 37 formed in this manner with the same rolling elements as in the above-described fourth reference example (not shown). ).
[0019]
The feature of the present invention is that, in each of the above-described embodiments, all of the molding for deforming the body portion is performed by the necking machine 47 shown in FIGS. 8 (a) and 8 (b). There is no need. In other words, the turntable 48 of the necking machine 47 is attached with a mold, a pilot, and a rolling element that are used in each step in the rotating circumferential direction. For example, when the container 1 of the first embodiment is formed, the mold 3 and the pilot 4 attached to the turntable 48 are moved back and forth to the necking machine 47 as shown in FIG. As a result, the opening 2 of the container 1 is drawn, and then the turntable 48 rotates intermittently, and the pilot 6 performs diameter expansion processing, and then the die 8 and the pilot 9 perform redrawing processing. Then, after the necking and bead processing steps, the rolling element 18 is molded in the final step to produce a deformed aerosol container.
[0020]
In addition to the first to third embodiments described above, the present invention can also be a manufacturing method in which only the drawing process is first performed a plurality of times and then the diameter expansion process is performed a plurality of times, or vice versa. Further, various combinations of deformation can be applied to the body of the container by arbitrarily combining the diameter expansion processing. In addition, as a material of the container, copper, brass, iron, or an alloy mainly composed of these is used in addition to aluminum.
[0021]
【The invention's effect】
As described above, according to the present invention, there is no need to transfer to another process in the molding, and the molding for deforming the body can be performed with one necking machine, and the molding time is short. The effect is that the manufacturing is easy and the manufacturing cost is low.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment according to the present invention.
FIG. 2 is a drawing showing a first reference example outside the present invention.
FIG. 3 is a drawing showing a second embodiment according to the present invention.
FIG. 4 is a drawing showing a second reference example outside the present invention.
FIG. 5 is a drawing showing a third reference example outside the present invention.
FIG. 6 is a drawing showing a fourth reference example outside the present invention.
FIG. 7 is a drawing showing a third embodiment according to the present invention.
FIG. 8 is a drawing showing a necking machine (FIG. (A)) and a turntable according to the present invention (a cross-sectional view along line AA in FIG. (A) (FIG. B)).
FIG. 9 is a view showing a conventional method for manufacturing a deformable container.
[Explanation of symbols]
1 11 24 37 Container 2 12 25 38 Opening 10 17 Bead 18 18 Rolling element 20 Disc 21 Cup shaped container 30 46 Flange 47 Necking machine

Claims (4)

After forming a bottomed cylindrical container by impact molding, a series of body forming of a drawing process to reduce the outer diameter of the body part of the bottomed cylindrical container or an expansion process to expand the diameter is performed. A method of manufacturing a deformable container using a necking machine,
After performing the drawing process to reduce the outer diameter of the body part toward the bottom part from the opening end of the body part of the container toward the bottom , the upper part is subjected to the diameter expansion process to enlarge the outer diameter of the body part, Further, it is characterized in that a redrawing process for reducing the outer diameter of the body part is performed above, a necking process is performed on the opening part of the container to narrow the opening part, and then a bead part is formed at the opening end part. A method for manufacturing a deformed container. The method for manufacturing a deformable container according to claim 1, wherein the expansion ratio in the expansion process is 7 to 15% . After you facilities molding punching the plate material such as aluminum in a disc shape, was carried out the steps of deep drawing a disc punched out said the container a cup-shaped, and a step of subjecting the ironing aperture in the container of the cup-shaped, A container manufacturing method in which a series of body forming of a drawing process for reducing the outer diameter of the cup-shaped body part or an expanding process for expanding the diameter is performed with a single necking machine,
After the series of body forming steps , the body portion is subjected to drawing processing to reduce the outer diameter of the body portion from the open end of the body portion of the cup-shaped container toward the bottom , and then the outer portion of the body portion is formed above the body portion. A diameter expansion process is performed to increase the diameter , and a redrawing process to reduce the outer diameter of the body part is performed above it . Next, a necking process is performed on the container opening to narrow the opening, and then to the opening end. A method of manufacturing a deformable container, characterized in that it is performed by forming a flange portion. In addition to the drawing process and the diameter expansion process, a rolling element is attached to the final machining process of the necking machine, the rolling element is pressed against the surface of the container, and the rolling element is placed in the vertical, diagonal, or circumferential direction of the container. The method of manufacturing a deformable container according to any one of claims 1 to 3 , wherein the body portion is subjected to rolling by rolling.

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