JP2008200755A - Method for manufacturing deformed container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a deformed container which is easy to be molded and has a short manufacturing time without a transfer operation to another process.
SOLUTION: After forming a bottomed cylindrical container 11, from the one end to the other end of the barrel portion of the bottomed cylindrical container, the diameter expanding process and the reduction of the outer diameter of the barrel portion are performed. A method of manufacturing a deformable container in which a series of body forming operations for diameter reduction is performed with a single necking machine. In forming a body part of a container 11, a pilot 13 is inserted into an opening 12 of the body part to form a body part. In the state of expanding the diameter from the middle to the upper end, and further leaving the expanded portion 14 in the lower portion, the die 15 and the pilot 16 are used to reduce the barrel portion using the die 15 and the pilot 16, Next, a deformed container manufacturing method for forming necking and beading.
[Selection] Figure 2

Description

  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.

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. Thus, 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. In addition, 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.
JP-A-61-193729 JP 7-317883 A JP-A-62-286842 JP-A 61-206533 JP 61-193728 A

  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. As a result, the total time required for the process becomes longer and the final drawing process in a separate process requires time and effort, resulting in higher manufacturing costs as a whole.

  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.

  In order to solve this problem, the solution means corresponding to the first aspect of the invention is to form a bottomed cylindrical container by impact molding and then move from one end to the other end of the body of the bottomed cylindrical container. A method of manufacturing a deformed container in which a single necking machine forms a series of body parts for drawing processing for reducing the outer diameter of the body part or for expanding the diameter of the body part, and one end of the body part of the container. From the other end, the body portion is subjected to drawing and diameter expansion processing, then the opening of the container is necked to narrow the opening, and then the bead portion is formed at the opening end. Features.

  The solution means corresponding to the invention of claim 2 is the molding of the body part of the deformable container, after performing the drawing process for reducing the body part, and then performing the diameter expansion process for enlarging the body part above it, A redrawing process for reducing the body portion is performed on the upper side.

  According to a third aspect of the present invention, there is provided a solution corresponding to the invention described in claim 1, wherein in forming the barrel portion of the deformable container, the diameter of the barrel portion is enlarged, and then the barrel portion is reduced above the barrel portion. It is characterized by performing a drawing process.

  According to a fourth aspect of the present invention, there is provided a solution to a cup-shaped container, comprising: a step of drawing a plate material such as aluminum into a disk shape, and then drawing the punched disk into a cup-shaped container; A process of drawing and ironing, and a series of body forming of a drawing process for reducing the outer diameter of the body part from one end of the cup-shaped body part to the other end, or a diameter expanding process for expanding the body part, A method of manufacturing a deformed container performed by a single necking machine, in which a body of a cup-shaped container is subjected to drawing and diameter-expansion processing from one end of the body toward the other end, and then the container The opening portion is necked to narrow the opening portion, and then a flange portion is formed at the opening end portion.

  According to a fifth aspect of the present invention, there is provided a solution means for forming the barrel portion of the deformable container according to the fourth aspect, wherein after the drawing processing for reducing the barrel portion is performed, the diameter expansion processing for enlarging the barrel portion above the barrel portion. Further, a redrawing process for reducing the body portion is performed on the upper side.

  According to a sixth aspect of the present invention, there is provided a solution means for forming the barrel portion of the deformable container according to the fourth aspect, wherein after the diameter-enlarging process for enlarging the barrel portion is performed, the diaphragm for reducing the barrel portion is provided above the barrel portion. It is characterized by processing.

  According to a seventh aspect of the present invention, there is provided a solution corresponding to the invention according to any one of the first to sixth aspects of the invention, in the deformed container manufacturing method according to any one of the first to sixth aspects, 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. .

Next, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a manufacturing process of a modified aerosol container, and FIGS. 5 to 7 show a manufacturing process of a container for a 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, cleaning, inner surface, painting, and outer surface printing for trimming the opening 2. 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 processing 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. 1E, 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.

  FIG. 2 is a drawing showing a second embodiment of the present invention. The difference from the first embodiment is that the pilot 13 is inserted into the opening 12 of the bottomed cylindrical container 11 to expand the diameter. (FIG. 2 (G)), and then with the diameter-expanded portion 14 left, the die 15 and the pilot 16 are used for drawing (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.

  FIG. 3 is a view showing a third embodiment of the present invention. The feature of the third embodiment is that the process shown in FIG. 3 (O) is added to the same process as that of 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.

  FIG. 4 is a view showing a fourth embodiment of the present invention. The feature of the fourth embodiment is that the process shown in FIG. 4 (T) is added to the same process as that of the second embodiment. It 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 second embodiment. It is also possible to attach inclined ribs or lateral ribs by changing the rolling elements 18.

  FIG. 5 is a view showing a fifth embodiment of the present invention, and shows a process of forming a beverage container having a deformed body part in the order of 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 drawing and ironing is performed using a die 28 and a 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.

  FIG. 6 is a drawing showing a sixth embodiment of the present invention. The feature of the sixth embodiment is that the process shown in FIG. 6 (s) is added to the same process as the fifth embodiment. is there. That is, a process of forming a plurality of vertical ribs 19 on the body 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 5th Embodiment. In addition to the vertical ribs 32, inclined ribs, horizontal ribs, and the like may be formed.

  FIG. 7 is a drawing showing a seventh embodiment of the present invention, and the steps until the bottomed cylindrical container 37 is formed are the same as those in the fifth embodiment. The feature of the seventh 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 way with the rolling elements described above (not shown).

  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.

  In addition to the first to seventh 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.

  [Effects of the Invention] As described above, according to the present invention, there is no need to transfer to another process in molding, and molding for deforming the body can be performed by a single necking machine. The molding time is short, the production is easy, and the production cost is low.

BRIEF DESCRIPTION OF THE DRAWINGS Drawing which shows 1st Embodiment concerning this invention. Drawing which shows 2nd Embodiment based on this invention. Drawing which shows 3rd Embodiment based on this invention. Drawing which shows 4th Embodiment based on this invention. Drawing which shows 5th Embodiment concerning this invention. Drawing which shows 6th Embodiment concerning this invention. Drawing which shows 7th Embodiment based on this invention. BRIEF DESCRIPTION OF THE DRAWINGS Drawing which shows the necking machine (FIG. (A)) and turntable (AA sectional view (FIG. B) of FIG. (A)) concerning this invention. The figure which showed the manufacturing method of the conventional deformation | transformation container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 11, 24, 37 Container 2, 12, 25, 38 Opening part 10, 17 Bead part 18, 31 Rolling body 20 Disk 21 Cup-shaped container 30, 46 Flange part 47 Necking machine

Claims (7)

  After forming a bottomed cylindrical container by impact molding, drawing processing to reduce the outer diameter of the barrel part from one end to the other end of the bottomed cylindrical container, or enlargement to expand A method of manufacturing a deformable container in which a series of processing body forming is performed by a single necking machine, and drawing and diameter expansion processing from one end of the container toward the other end of the body And then necking the opening of the container to narrow the opening, and then forming a bead at the opening end.   In forming the barrel part of the container, after the drawing process for reducing the barrel part, the diameter expansion process for enlarging the trunk part is performed on the upper part, and the redrawing process for reducing the upper part is further performed on the upper part. The manufacturing method of the deformation | transformation container of Claim 1.   2. The method for producing a deformable container according to claim 1, wherein, in forming the body portion of the container, after the diameter expanding process for enlarging the body part is performed, a drawing process for reducing the body part is performed thereon. .   A step of punching a plate material such as aluminum into a disk shape, and then drawing the punched disk into a cup-shaped container; a step of drawing and ironing the cup-shaped container; and the cup shape Method of manufacturing a container in which a single necking machine performs a series of body forming of drawing processing for reducing the outer diameter of the body portion or expansion processing for expanding the diameter from one end of the body portion toward the other end The cup-shaped container body is drawn from one end to the other, and subjected to drawing and diameter-expansion, and then the container opening is necked to squeeze the opening. Then, a method for manufacturing a deformed container is characterized in that a flange portion is formed at the open end.   In forming the barrel part of the container, after the drawing process for reducing the barrel part, the diameter expansion process for enlarging the trunk part is performed above, and the redrawing process for reducing the trunk part is further performed thereon. The method for producing a deformable container according to claim 4.   5. The method of manufacturing a deformable container according to claim 4, wherein, in forming the body portion of the container, after the diameter-enlarging process for enlarging the body portion is performed, a drawing process for reducing the body portion is performed thereon. .   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 6, wherein the body portion is subjected to rolling by rolling.

Images