KR20010069232A - Constructural of deep drawing and compress metal mold using aluminum boards - Google Patents

Abstract

PURPOSE: A structure of dies for deep drawing and pressing a main material of an aluminum plate is provided in which a product is completed without executing post-treatment of the product after deep drawing the aluminum plate, thereby reducing manufacturing costs and preventing the deterioration of quality of the product. CONSTITUTION: In a structure of dies for deep drawing and pressing a main material of an aluminum plate in which a deep cap is manufactured by pressing the wall of the aluminum plate (102) put on a dies (101) with a press and a punch (103), the structure comprises a protrusion part (110a) formed at the front end part of the inner circumferential surface (101a) of dies (101) in such a manner that a gap between the outer diameter surface of the punch and the inner circumferential surface of dies is set relatively less than a thickness of the aluminum plate (102), thereby pressing the aluminum plate during drawing of the aluminum plate.

Description

Structure of deep drawing and compress metal mold using aluminum boards

The present invention relates to a structure of a deep drawing and press molding die mainly made of an aluminum sheet, which presses and punches a wall of a plate (aluminum) placed in a mold to produce a deep cap. Since the gap between the outer diameter surface and the inner peripheral surface of the mold is set to be relatively smaller than the thickness of the aluminum plate material, it includes a protrusion to connect with the inner diameter of the mold to be pressed and formed during drawing, thereby reducing the thickness of the aluminum by the protrusion during drawing. As a result, the structure of the workpiece is dense and the surface is smooth and polished, which eliminates the need for post-processing of the workpiece, thereby reducing the production time of the product and minimizing the production cost of the product. Products can be supplied to consumers, and always the same, It provides a deep-drawing, and the structure of the compression molding die, which is able to work with the drawing of the standard product the aluminum plate material capable of reducing the defect rate as main

In general, deep drawing corresponds to a drawing process in which the wall of the workpiece is processed thinly by pressing using a punch 1 and a mold 2, and those produced by the deep drawing include a rifle bullet, Casings, aluminum kettles, pails, etc.

The technique of the above-described deep drawing is described in FIGS. 1 to 3 as follows.

First, as shown in FIG. 1A, the plate 2 (aluminum) 3 is placed in the mold 2, and then the punch 1 and the stopper 4 shown in FIG. 1A are lowered to the upper surface of the plate 3. .

When the punch 1 and the stopper 4 are lowered as described above, the stopper 4 fixes the outer side of the plate 3 as shown in FIG. 1B, and the inside of the mold 2 is lowered by the punch 1. The plate 3 is pressed by the hollow portion 5.

Therefore, the plate 3 is lowered to the lower side of the hollow portion 5, as shown in Figure 1c is increased in the material, at this time, because the stopper (4) is not completely fixed to the plate 3 ) Is also guided to the hollow portion 5 side plate 3 is not torn or wrinkles do not occur.

When the deep drawing operation is completed by the series of work procedures described above, a deep cap 10 having a predetermined shape is completed as shown in FIG. 3.

However, since the product 10 manufactured by the conventional deep drawing operation is pressurized to the hollow portion 5 by the punch 1 as shown in FIG. 2 and the material is stretched, as shown in FIG. 3. Likewise, the surface is very rough and the manhole 11 is generated.

Therefore, in order to correct this, a separate post-treatment process is required. The post-treatment process smoothes the surface treatment process and the rough surface and polishes the surface of the plate (aluminum) to grind the inner surface and the surface of the product. The troublesome problem of having to perform the polishing process to make it occur is caused.

In addition, when the surface treatment process is performed by an inexperienced worker rather than a skilled worker, the surface is more or less cut and the quality of the product is degraded. Not only serious problems occur in the management and securing, but also the post-treatment process, the employees do not want to engage in the industry, it is very difficult to manage and secure personnel.

In addition, in the case of using any product which is combined with one or more parts, such as Practical Application No. 3607 filed on March 12, 1998 (name of the invention: pressure automatic control device of a food container) or a pressure cooker, etc. Since there is an assembly tolerance between products, it requires more accuracy. If the surface is processed manually by hand, the specifications are different for each product. There is a problem that can only be reduced.

The present invention devised to solve the above problems is to perform a deep drawing operation using aluminum, so that the product can be completed without performing the post-treatment process of the product, shortening the product manufacturing time, waste of manpower It aims to reduce the quality of the product by preventing the deterioration of the product quality by improving the strength of the product further while reducing the production cost and reducing the production cost. do.

The above object is, according to the present invention, a deep drawing and press molding die mainly based on an aluminum sheet which presses and punches a wall of a plate (aluminum) placed in a mold to produce a deep cap. In the structure, the aluminum plate member characterized in that it comprises a projection for forming a compression formed during drawing by forming a link between the outer diameter surface of the punch and the inner peripheral surface of the mold is set relatively smaller than the thickness of the aluminum plate material to the end portion of the inner diameter surface of the mold; It is achieved by the structure of a deep drawing and a press molding die which are the main materials.

In addition, it is preferable to further include a guide portion which is formed on the upper surface of the protrusion at a predetermined slope to guide the aluminum sheet when pressing the aluminum sheet of the punch.

1 is a view showing a drawing operation based on a conventional aluminum sheet.

2 is an enlarged view of a portion A of FIG. 1;

Figure 3 is a view showing the surface state of the product after a conventional deep drawing operation.

Figure 4 is a view showing a drawing operation mainly on the aluminum plate of the present invention.

5 is an enlarged view of a portion B of FIG. 4;

6 is a view showing the surface state of the product after the deep drawing operation of the present invention.

Explanation of Drawings

101-mold 101a-mold inner circumference

102-Aluminium sheet, plate (aluminum) 103-Punch 103a-Punch outer surface

104-mould hollow 105-stopper 110-protrusion

110a-projection inner diameter 111-guide 113-round

120-front and back of the product completed by the present invention

Hereinafter, the configuration of the present invention will be described in Figures 4 to 6 as follows.

A deep drawing mainly composed of an aluminum plate which presses the wall of the plate (aluminum) 102 placed in the mold 101 with a press (not shown) and a punch 103 to produce a deep cap; In the structure of the press molding die, the gap between the punch outer diameter surface 103a and the mold inner peripheral surface 101a is formed in connection with the distal end portion of the inner peripheral surface 101a of the mold 101 so that the distance between the punch outer diameter surface 103a and the mold inner peripheral surface 101a is set relatively smaller than the thickness of the aluminum plate 102. It includes a projection 110 to be compression molded during drawing.

In addition, the guide portion 111 is formed on the upper surface of the protrusion 110 to guide the aluminum sheet 102 to the hollow portion 104 when the aluminum sheet 102 is pressed by the punch 103. Include.

Further, a round part 113 formed on the lower surface of the protrusion part 110 to prevent damage to the product surface when the drawn product is removed.

Referring to the technique of the present invention made of the above configuration is as follows.

First, as shown in FIG. 4A, the plate (aluminum) 102 is placed in the present invention mold 101, and then the punch 103 and the stopper 105 shown in FIG. 4A are placed on the upper surface of the plate 102. As shown in FIG. Lower

When the punch 103 and the stopper 105 are lowered as described above, the stopper 105 fixes the outer side of the plate member 102 as shown in FIG. 4B, and the punch 103 is lowered to the inside of the mold 101. The plate 102 is pressed by the hollow part 104.

Accordingly, the plate 102 is pressed down between the protrusion 110 and the punch 103 while being lowered to the lower side of the hollow portion 104 as shown in FIG. 4C, and at the same time, the material is stretched. ) Is not in a state of completely fixing the plate 102, the plate 102 is also guided to the hollow portion 104 side to prevent the plate 102 is torn or wrinkles occur.

Here, as shown in FIG. 5, when the plate 102 is pressed and lowered by the punch 103, the material is stretched while being guided to the hollow part 104 by the guide part 111, and at the same time, the protrusion part ( Since the gap between the 110 and the punch outer diameter surface 103a is narrower than the thickness of the plate (aluminum) 102, the aluminum is pressed as it passes through, which not only makes the tissue very dense but also causes glossiness on the front and back surfaces. .

In other words, while the deep drawing operation is performed, the finished product is reduced in thickness as shown in FIG. 5, while the tissue becomes more dense and the front and back surfaces 120 are polished in a smooth state. It is a complete product without any post-treatment.

Here, the gap T2 between the inner diameter surface 101a (the inner diameter surface 110a of the protrusion 110) of the mold 101 and the punch 103 of the mold 101 is 2.3 when the thickness T1 of the plate material 102 is 2.7 mm. By setting it to mm, the plate material (aluminum) 102 having a thickness of 2.7 mm passes through the gap of 2.3 mm by the lowering of the punch 103, whereby the structure of the aluminum becomes more dense, and thus the protrusion 110 Friction does not cause wrinkles or cracks and the luster is generated.

As can be seen from the above embodiment, the ratio of the gap T2 between the mold inner circumferential surface 101a and the punch 103 outer circumferential surface 103a is preferably set at a ratio of about 85%.

That is, when using the plate material 102 of 3mm, it may be desirable to set the distance between the protrusion inner diameter surface 110a and the punch outer diameter surface 103a to 2.55 mm.

In addition, when removing the product drawn by the mold 101, in order to prevent the surface of the product from being damaged by the protrusion 110, a round portion 113 having a predetermined size on the lower surface of the protrusion 110. It is preferable to form

That is, the compressed and drawn product is inflated toward the inner circumferential surface 101a side of the mold 101 by a predetermined elastic force, so that when the lower portion of the protrusion 110 is formed or protrudes when the product is removed, Since damage is added, it is preferable to form the round portion 113 so that the product is removed from the mold in a state where the surface of the product is not damaged.

Reference numeral 112 in the drawings is a finished product manufactured after the deep drawing work according to the present invention.

As described above, the present invention forms a protrusion on the mold during the deep drawing operation using the aluminum plate, and sets the gap between the protrusion and the punch to be relatively smaller than the thickness of the aluminum plate, so that the plate is lowered to the punch and the protrusion when the punch is lowered. By contacting, the tissue becomes dense, so that gloss can be generated on the front and back of the finished product by deep drawing, and the finished product is manufactured without performing the surface treatment process and the gloss process, which are post-processing processes after deep drawing. It is possible to reduce production time and production cost of the product, and it is effective to provide consumers with cheaper and more robust products. Since it does not perform post-treatment process, it is possible to always produce products of the same standard, It is a very good invention that has the effect of reducing the assembly tolerance when assembled.

Claims (3)

A deep drawing mainly composed of an aluminum plate which presses the wall of the plate (aluminum) 102 placed in the mold 101 with a press (not shown) and a punch 103 to produce a deep cap; In the structure of the compression molding die, Projection portion for forming a compression formed during drawing by linking the outer peripheral surface of the die 103 and the inner peripheral surface 101a of the mold with the inner peripheral surface 101a of the mold 101 to be set relatively smaller than the thickness of the aluminum plate 102. A structure of a deep drawing and a press molding die mainly based on an aluminum plate, characterized by including (110). The method of claim 1, The guide part 111 is formed on the upper surface of the protrusion part 110 at a predetermined slope to guide the aluminum plate 102 to the hollow part 104 when the aluminum plate 102 is pressed by the punch 103. The deep drawing and press-molding die structure mainly based on the aluminum plate material. The method of claim 1, The deep drawing and the press-molded mold of the aluminum sheet material, characterized in that it further comprises a round portion 113 formed on the lower surface of the protrusion 110 to prevent damage to the product surface when the drawn product is removed rescue.