KR20000032127A - Method for manufacturing metal container and apparatus for ending metal container rim - Google Patents

Abstract

PURPOSE: A method for manufacturing metal container is provided to increase the productivity by ending a metal container rim with a pair of frames and U-and R-bending machines so that the damage of workers is removed comparing with the workers' manual operation. CONSTITUTION: A method for manufacturing metal container with an apparatus for ending metal container rim including a pair of frames in the shape of a desired container shape connected with an elastic element and having a groove at a part corresponding to a plane rim of a container, a U-bending machine for bending the rim in the shape of U or V, and an R-bending machine for bending inwardly the U or V shaped rim includes the steps of cutting a metal thin plate in a certain length, forming a container shape by a press, cutting a rim of the container with a predetermined width, and bending the rim with a press, wherein a plurality of the frames are disposed in a movable board, so that the frames are alternately located at a position corresponding to the U and R bending machines, thereby the bending machines lowered to the metal plate for bending and rolling the rim thereof.

Description

Container manufacturing method and container edge finishing device

The present invention relates to a method for manufacturing a container using a metal thin plate and a finishing device for finishing the rim of the container.

Containers manufactured using metal thin plates are widely used because they are light and easy to transport. It is especially used as a food container.

In the prior art, such a container was manufactured using a so-called herashibori method. This method is briefly described.

First, the metal sheet is cut into appropriate sizes and attached to a mold having a container shape. In addition, when the mold and the thin plate is integrally rotated and the wood is strongly adhered to the thin plate, a container having a shape like the mold is formed. Thereafter, the cutter is cut to have a constant width using a cutter or the like. Then, after attaching to the mold again while rotating the roller having a substantially U-shape while approaching the side of the rim of the container roll the end of the rim to complete the rim of the container.

However, this manufacturing method has a lot of manual work, there was a high risk of injury to the operator.

As an improvement to this, a technology for making a shape of a container using a press machine has been developed and used, but there is a problem in that productivity is not high because a lot of time is used for finishing the edges.

The present invention has been devised in view of the above-mentioned conventional problems, and an object thereof is to provide a container manufacturing method and a container edge finishing device having a safe and productive operation.

1 is a cross-sectional view of the mold of the present invention;

2 is a cross-sectional view of the U-bending machine of the present invention and showing its operation;

3 is a cross-sectional view of a modification of the mold of the present invention;

4 includes a cross-sectional view of the R-bending machine and explains its operation;

5 is an explanatory view showing a finish treatment of a rim using a plurality of templates according to the present invention.

Explanation of symbols on the main parts of the drawings

1: mold

11: groove 12: spring (elastic material)

2: container 21: border

3: U-bending machine 31: Tip

4: R-bending machine 41: groove

5: substrate

The present invention, in order to solve the above problems, to cut the original fabric of the metal foil to a suitable size, to form the shape of the container by dipping the cut metal foil with a press machine, leaving the border of the shape is completed leaving a constant width , Bend the width of the left edge with a press and roll to complete the edge.

In addition, the U-bending machine that bends the U- or V-shape by pressing the flat frame of the container to form a shape of the desired container and grooved in the portion corresponding to the flat rim of the container and pressing the flat-shaped edge of the container, and bending the U- or V-shaped. A container edging closure consisting of an R-bending machine that rolls up the finished rim.

Preferably, the mold is composed of two upper and lower members and connects both members with an elastic body.

Further, a plurality of molds are formed on a substrate that can move the mold, and the plurality of molds loaded with containers are alternately stopped at positions corresponding to the U-bending machine and the R-bending machine by moving the substrate so that the U-bending machine and the R- The bending machine can be lowered to bend and roll the container rim to make the container much faster.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the manufacturing method will be described.

First of all, the metal sheet, which is the original fabric, is cut into a suitable size using a cutter. Here, the appropriate size refers to the size considering the size of the container to be manufactured. The thin metal plate thus cut is taken out in the shape of a container using a press. At this time, of course, both the pressurized surface of the press and the pressurized surface subjected to the pressure thereof have the shape of a container.

Thus, the shape of the container has a shape of a square, such as a square, there is a risk of being injured at the corners, and because the shape is difficult to finish the border cut this border to remain only a certain width. As a method of cutting, a method of cutting a container by inserting the container into a fixed mold and pressing with a press or the like can be considered.

The flat and constant width of the container is bent with a press and rolled again to make the container by completing the rim by entering the end of the rim inside.

Next, a container edge finishing device suitable for realizing the manufacturing method will be described.

First of all, the mold which cuts the edge of the container by placing the cut container with a certain width will be described. As shown in Fig. 1, the mold 1 has a shape of a container, and when the container 2 to be processed is placed thereon, the container 2 does not move and is convenient for processing. The difference between the mold 1 and the shape of the container 2 is that the groove 11 is dug around the mold 1. As shown in Fig. 2, the groove 11 has a U-shaped or V-shaped edge when the tip 31 of the U-bending machine 3 presses the edge 21 of the container when the U-bending machine 3 presses the container 2. It is intended to bend to shape.

On the other hand, it is preferable that the mold 1 is formed by dividing it into two parts as shown in FIG. The container 2, which is placed on the mold 1, is pressed against the U-bending machine 3 and the R-bending machine 4 so as not to fall from the mold 1, especially the lower part thereof, by lifting with the elastic force of the spring 12 the container. It is easy to take it out.

The U-bending machine 3 has a cylindrical shape in which the hollow and one side are opened. Since the groove 11 is formed in the part of the mold 1 corresponding to the tip 31 of the U-bending machine 3, the tip 31 is the groove 11 when the U-bending machine 3 descends. While entering, bend the edge 21 of the container 2. In order to drive the U-bender, a driving device is required, which uses a known driving device using hydraulic pressure or air pressure, and thus description thereof is omitted. In some cases, it can be operated manually using a lever or the like.

On the other hand, the R-bending machine 4 has the same shape as the container 2, but the groove 41 is dug outwardly, that is, at a portion corresponding to the rim 2 of the container 2. When the R-bending machine 4 is lowered, the groove 41 is also lowered, while the curved edge 21 of the container 2 is pressed along the inclined surface of the groove 41 to dry the edge 21. . The driving method of this R-bending machine 4 is the same as that of the U-bending machine 3.

On the other hand, by forming a large number of the mold (1) it is possible to quickly manufacture the container (2). That is, a plurality of molds 1 are formed on the rotatable substrate 5 as shown in FIG. 5, and the U-bending machine 3 and the R-bending machine 4 are formed on two suitable molds 1 among the molds 1. Place it. In addition to the two molds 1, the container 2 is loaded on the mold 1, and the substrate 5 corresponds to the interval between the mold 1 and the mold 1 on the substrate 5 at an appropriate interval. Each bending machine (3, 4) is driven while rotating by the interval to finish the rim (11). The finished container 2 is taken out from a suitable place.

Each time the substrate 5 is moved, the container 2 is loaded, the bending machines 3 and 4 are driven and the container is taken out. In this way, eight containers can be processed while the substrate 5 is rotated one time.

In the above example, the substrate is rotated, but the substrate may be formed in a conveyor form, and the mold may be rotated while drawing a loop to finish.

The present invention has the above configuration, there is no risk of injury to the operator. In addition, by forming the mold divided into two members can be easily taken out of the rim finished container.

In addition, if a plurality of molds are formed on the substrate and moved while finishing, it is possible to quickly finish.

Claims (4)

In the method of manufacturing a container by processing a metal thin plate, Cut the fabric of the metal sheet to a suitable size, Dip the cut metal sheet with a press to make the shape of a container, Cut the rim of the finished container with a certain width, Method for producing a container, characterized in that the width of the left edge is bent with a press to complete the edge A mold having a shape of a desired container and grooved in a portion corresponding to the flat edge of the container, A U-bending machine that presses the flat edge of the container and bends it into a U or V shape, Container edge finishing device consisting of an R-bending machine to roll the U or V-shaped curved edge inward. The method of claim 2, The mold comprises a top and bottom two members and the container rim closure device, characterized in that connecting both members with an elastic body. The method of claim 2, A plurality of forms on the substrate that can move, By moving the substrate, a plurality of molds loaded with containers alternately stop at positions corresponding to the U-bender and R-bender, and the U-bender and R-bender are lowered to bend and roll the container rim. Container edge closure.