Core pin for preventing molten metal from flowing into pipe and casting device using the same

Patent metadata

Field	Value
Publication number	US-2016101466-A1
Application number	US-201514620263-A
Country	US
Kind code	A1
Filing date	Feb 12, 2015
Priority date	Oct 14, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

A core pin is provided that prevents a molten metal from flowing into a pipe and a casting device using the same is also provided. The core pin specifically contacts a first end of the pipe inserted into a mold to close the end of the pipe, to thus prevent the molten metal from flowing into the pipe.

First claim

What is claimed is:

1 . A core pin configured to prevent a molten metal from flowing into a pipe by contacting a first end of the pipe inserted into a mold to close the first end of the pipe.

2 . The core pin of claim 1 , comprising:
a ball that contacts the first end of the pipe; and a fixing pin detachably coupled to the ball.

3 . The core pin of claim 2 , wherein the ball and a first end of the fixing pin are screwed to each other.

4 . The core pin of claim 2 , wherein the ball has a diameter greater than an inner diameter of the pipe.

5 . The core pin of claim 1 , wherein any one of molten aluminum and molten magnesium is injected into the mold, and a material of the ball is any one of carbon steel and stainless steel.

6 . The core pin of claim 5 , wherein a relationship between the diameter of the ball and the inner diameter of the pipe satisfies the following Equation:
d ×(5/3)≦ D≦ 3 d
wherein, d is the inner diameter of the pipe and D is the diameter of the ball.

7 . A casting device, comprising:
a mold into which a pipe is inserted; and a core pin that contacts a first end of the pipe inserted into the mold to close the first end of the pipe and prevent a molten metal from flowing into the pipe.

8 . The casting device of claim 7 , further comprising:
a hydraulic cylinder having a fixed first end, wherein the core pin is coupled to a second end of the hydraulic cylinder to selectively contact an end portion of an outer diameter of the pipe to fix the pipe.

9 . The casting device of claim 7 , wherein the core pin includes a ball that contacts the first end of the pipe and a fixing pin detachably coupled to the ball.

10 . The casting device of claim 9 , wherein the ball and a first end of the fixing pin are screwed to each other.

11 . The casting device of claim 9 , wherein the ball has a diameter greater than an inner diameter of the pipe.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kang Mun Gu
• Yoon Kwang Min
• Jeong Tae Ho
• Yoon Hyung Sop

Classifications

• B22C9/064

  Locating means for cores · CPC title

• B22D17/24

  Accessories for locating and holding cores or inserts · CPC title

• B22D17/20 Primary

  Accessories: Details · CPC title

• B22D19/0072

  for making objects with integrated channels · CPC title

• B22D17/2015

  Means for forcing the molten metal into the die (for plastics B29C45/46) · CPC title