KR100830275B1 - Method of assembling cover for drainage trap - Google Patents

Abstract

A method for manufacturing a cover for a drain trap is provided to prevent accidents while cleaning a bathroom, a kitchen and a veranda by removing a sharp projection around a cutting part through a punching process, a burr removal process and a bending process, and to improve reliability and commercial value of a product. A method for manufacturing a cover for a drain trap, for forming a round part along the circumferential surface of a drain hole and a cover member which is installed on the upper part of a drain trap and provided with drain holes repeatedly, comprises the steps of: forming the edge of a cover member(10) and a drain hole(11) between a first upper mold provided with a punch projecting downward and a cutting part formed along the edge of the cover member and a first lower mold provided with a punching hole formed correspondingly to the punch; removing a shaft projection formed on the drain hole and the edge by a second lower mold(50) provided with a burr-removal punch(55) formed upward on the edge of the cover member and each drain hole by moving with a second upper mold(40); and forming a bend on the circumference of the cover member between a third upper mold provided with a bending punch and a third lower mold.

Description

Method of Assembling Cover for Drainage Trap}

The present invention relates to a method for forming a cover for a drain trap, and more specifically, to form a cover for the drain trap through a punching process, a burr removing process, and a bending process, by gently processing a sharp protrusion around the lower portion of the cut after the punching process. And in the kitchen, porch cleaning process is invented to prevent accidents due to contact in advance.

In general, floors such as bathrooms, toilets, verandas, laundry rooms, etc., are finished using tiles having various advantages in hygienic, cleaning, and decorative aspects, and prevent debris from being drained in the process of draining water generated during use. A drain trap cover is provided.

In addition, a conventional drain trap cover has a plate shape and drain holes having various shapes are processed into the upper surface of the body in a configuration in which the side portions are bent.

That is, a plurality of drainage holes are molded to have a predetermined interval and have a polygonal shape while including a circular shape and have a certain aesthetics.

The general method of forming the cover for the drain trap is to process the outer shape with the drain hole through the metal sheet material press mold.

Then, the outer edge is bent again to be processed into a desired shape.

At this time, a plurality of punches having a drainage hole shape are disposed in the upper mold to drill the drainage hole, and the boundary between the body and the punch is rounded.

In addition, when the drainage hole is drilled, the upper portion of the metal sheet is pushed out of the material due to the clearance gap with the hole drilled in the lower mold.

Thus, a round is formed on the upper part of the member as well as around the machining surface of the drainage hole, while on the bottom, a bur of a sharp shape is formed because the material is cut while being pushed finely.

As the burrs formed on the bottom are formed on the bottom, they do not affect the appearance, but after a long time, foreign matters such as hair are entangled or stained, which requires frequent cleaning. Injuries often occur.

 Injuries can cause civil complaints or lawsuits against construction companies.

Therefore, the already installed drain trap cover is a situation that performs the process of removing the burrs in a post process.

 An object of the present invention is to prevent the safety accident in the bathroom, kitchen, porch cleaning process by removing the sharp protrusions around the lower part of the cutting part after the punching process, punching process, burr removal process and bending process while forming the cover for the drain trap. To provide a drain trap cover.

Another object of the present invention is to provide a cover for a drain trap that can improve the reliability and productability of the product.

The object of the present invention is that the drainage hole 11 is repeatedly drilled in the cover member 10 installed on the upper portion of the drain trap;

As a method for forming the round portion 12 along the circumferential surface of the drain hole 11 and the cover member 10,

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a) the punch 100 is protruded downward and the punching hole 31 is moved to a position corresponding to the first upper mold 20 and the punch 100 in which the cutting portion 21 is formed along the edge of the cover member 10. A punching process in which the edge of the cover member 10 and the drainage hole 11 are formed between the first lower mold 30 to be drilled;

b) after the punching process, the second upper mold 40 is sequentially moved, and the burr removing punch 55 is formed upward toward the edge of the cover member 10 and the positions of the respective drainage holes 11. A burr removing step of removing the sharp protrusions formed in the drainage hole 11 and the edge surface by the lower mold 50;

c) bending after forming the bent portion 14 around the cover member 10 between the third upper mold 60 and the third lower mold 70 in which the bending punch 61 is formed after the burr removing process. This is achieved by the process being done sequentially.

According to the present invention as described above, the burrs formed sharply on the bottom surface of the drain trap cover can be treated in a round through a burr removing process to solve problems such as wounding during cleaning.

Therefore, it is possible to increase the reliability and marketability of the product.

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

1 is a perspective view showing a part of the drain trap cover configuration completed through the present invention for forming the trap cover for drain trap.

Figure 2a to 2e is a process showing the cover forming method for the drain trap of the present invention Figure 2a is a cross-sectional view showing the configuration of the first upper mold and the first lower mold just before the drain hole is formed through the first punching process. .

2B is a cross-sectional view illustrating a state in which the first upper mold and the first lower mold are pressed to cut and drain holes therebetween.

2C is a cross-sectional view illustrating a state in which a cover member is positioned between the second upper mold and the second lower mold for the burr removing process after the punching process.

FIG. 2D is a cross-sectional view illustrating a process of removing the burr by pressing the cover member between the second upper mold and the second lower mold. FIG.

2E is a cross-sectional view illustrating a process of forming a bent portion around the cover member by the third upper mold and the third lower mold.

3 is a cross-sectional view of the completed drain trap cover.

As shown in the figure, a cover member 10 is installed at the inlet of the drain trap provided for drainage in a bathroom, a veranda, or the like to prevent foreign substances from falling.

The cover member 10 is made of a stainless steel material, especially from a metal plate material having excellent decorative property without corrosion, and a plurality of drainage holes 11 of various shapes are drilled for drainage.

The most important structural feature of the present invention is the shaping of the round portion 12 along the circumferential surface of the drainage hole 11 and the cover member 10.

The round surface 12 is formed to prevent injuries by the sharp cut surface of the housewives in the installation process, as well as the cleaning process after installation.

Here, the round surface 12 is formed by processing the sharp protrusion gently through the burr removing process so that there is no risk of damage even when contacted.

In addition, the shape of the drainage hole 11 can be applied to all of the drainage holes to form punching configurations of various shapes such as circular and polygonal shapes in addition to the cross-shaped shape shown in the drawings.

On the other hand, the manufacturing process of the cover member 10 for drain trap having the round surface 12 as described above is as follows.

Firstly, the plate-shaped cover member 10 is cut into a desired circumferential shape, and a plurality of drainage holes 11 are formed through a punching process.
The first upper mold 20 has a cutting portion 21 formed along the edge of the cover member 10 to be cut, and considering the size and number of the drain holes 11 to be punched by the punch 100 to the lower portion. Are arranged.

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In addition, the punching holes 31 are drilled in the first lower mold 30 with a tolerance that allows the cutting of the cover member 10 to a position corresponding to the punch 100 of the first upper mold 20. The member 10 is positioned between the first upper mold 20 and the first lower mold 30 to be pressed by a press to cover the cover member 10 in a desired circumferential shape simultaneously with the drainage hole 11. Will cut.

In addition, a predetermined round (R) is formed at the boundary between the body of the first upper mold 20 and the punch 100 in the above process, and a small round is formed as the tissue of the material slides downward in the punching process. .

Therefore, the punching operation may be performed on the upper surface of the drain hole 11 without a sharp cutting surface.

Meanwhile, after the first punching process is completed as described above, the burr removing process is performed to remove the sharp burrs 13 generated along the lower portion and the edge of the completed drain hole 11 through the punching process.

In the burr removing process, the burr removing punch 55 protrudes upward to the same position as the punch 100 formed in the first upper mold 20, and the round part 51 is formed around the burr removing punch 55. It is made by pressing by a press in a state where the cover member 10 is positioned between the second lower mold 50 and the lower upper second mold 40 which are molded.

Accordingly, the round part 51 formed around the burr removing punch 55 of the second lower mold 50 presses the burr 13 formed along the lower part and the edge of the drainage hole 11 through the punching process. By round processing.

On the other hand, it is subjected to a bending process to form a bent portion 14 bent downward to the outer edge portion of the plate-shaped body portion 10 subjected to the burr removal process.

That is, a bending process of forming the bent portion 14 by joining in a state where the cover member 10 is positioned between the third upper mold 60 and the third lower mold 70 on which the bending punch 61 is formed. This is done sequentially.

While sequentially displacing such a process, the sharp burr 13 formed at the bottom of the bottom surface and the drain hole 11 is removed through the burr removing process, and the bent part 14 is bent again.

Therefore, it is possible to prevent the risk of injury to the worker in the process of installing the drain trap cover.

In addition, it is possible to prevent the safety accident injured in the cleaning process for the drain trap cover in advance.

1 is a partial cutaway perspective view showing the configuration of the drain trap cover completed through the present invention for forming the trap cover for drain trap.

Figure 2a to 2e is a process showing a cover forming method for the drain trap of the present invention Figure 2a is a cross-sectional view showing the configuration of the first upper mold and the first lower mold just before the drain hole is formed through the first punching process.

2B is a cross-sectional view illustrating a state in which the first upper mold and the first lower mold are pressed to cut and drain holes between them;

2C is a cross-sectional view illustrating a state in which a cover member is positioned between the second upper mold and the second lower mold for the burr removing process after the punching process;

Figure 2d is a cross-sectional view showing a process of removing the burr by pressing the cover member is positioned between the second upper mold and the second lower mold.

2E is a cross-sectional view illustrating a process of forming a bent portion around a cover member by a third upper mold and a third lower mold;

Figure 3 is a cross-sectional view of the completed drain trap cover.

* Description of the symbols for the main parts of the drawings *

10-Cover member 11-Drainage hole

12-Round 13-Bur

14-bend 20-first upper mold

30-1st lower mold 31-Punching hole

40-second upper mold 50-second lower mold

51-round part 60-third upper mold

70-third lower mold 100-punch

Claims (2)

delete a) the punch 100 is protruded downward and the punching hole 31 is moved to a position corresponding to the first upper mold 20 and the punch 100 in which the cutting portion 21 is formed along the edge of the cover member 10. A punching process in which the edge of the cover member 10 and the drainage hole 11 are formed between the first lower mold 30 to be drilled; b) After the punching process, the cover member 10 is moved between the second upper mold 40 and the second lower mold 50 so that the burr removing punch 55 protruded upward on the second upper mold 40 is formed. A burr removing step of removing a sharp burr formed in the edge of the cover member 10 and the respective drainage holes 11; c) bending after forming the bent portion 14 around the cover member 10 between the third upper mold 60 and the third lower mold 70 in which the bending punch 61 is formed after the burr removing process. Cover forming method for a drain trap, characterized in that the process is made sequentially.

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