Die casting machine shot sleeve with pour liner

Patent metadata

Field	Value
Publication number	US-2016279702-A1
Application number	US-201415035294-A
Country	US
Kind code	A1
Filing date	Aug 5, 2014
Priority date	Nov 25, 2013
Publication date	Sep 29, 2016
Grant date	—

Abstract

A shot sleeve for a die casting machine includes a shot sleeve body with a pour opening that extends to a spaced apart inner and outer diameters. The shot sleeve body is a first material. A liner is secured to the shot sleeve body beneath the pour opening. The liner is a second material. The shot sleeve body and the liner together provide a plunger surface defining a cavity that is configured to receive a molten shot of material.

First claim

What is claimed is:

1 . A shot sleeve for a die casting machine, comprising:
a shot sleeve body with a pour opening extending to spaced apart inner and outer diameters, the shot sleeve body is a first material; and a liner is secured to the shot sleeve body beneath the pour opening, the liner is a second material, the shot sleeve body and the liner together providing a plunger surface defining a cavity configured to receive a molten shot of material.

2 . The shot sleeve according to claim 1 , wherein the shot sleeve body extends a first axial length, and the liner extends a second axial length that is less than the first axial length.

3 . The shot sleeve according to claim 1 , wherein the plunger surface is circular and circumscribes the cavity, and the liner is arcuate in shape.

4 . The shot sleeve according to claim 3 , wherein the liner is configured to extend at least to a level of a shot of molten material.

5 . The shot sleeve according to claim 1 , wherein the liner is received within a pocket in the shot sleeve body defined by an edge, and the liner includes a perimeter secured to the edge by a weld.

6 . The shot sleeve according to claim 5 , wherein the liner and the weld includes a machined surface providing a portion of the plunger surface.

7 . The shot sleeve according to claim 1 , wherein the shot sleeve body includes cooling holes configured to be in fluid communication with a cooling fluid source, at least one cooling hole arranged beneath the liner.

8 . The shot sleeve according to claim 7 , wherein the at least one cooling hole includes a cooling channel in fluid communication with a backside of the liner.

9 . The shot sleeve according to claim 1 , wherein the first and second materials are different than one another.

10 . A method of manufacturing a shot sleeve, comprising the steps of:
providing a shot sleeve body with a pour opening in fluid communication with a cavity configured to receive a molten shot of material; and securing a liner to the shot sleeve body within the cavity and beneath the pour opening, the liner, the shot sleeve body and the liner together providing a plunger surface.

11 . The method according to claim 10 , comprising the step of arranging the liner within a pocket provided in the shot sleeve body.

12 . The method according to claim 11 , wherein the securing step includes welding a perimeter of the liner to an edge of the pocket.

13 . The method according to claim 12 , wherein the shot sleeve body extends a first axial length, and the liner extends a second axial length that is less than the first axial length.

14 . The method according to claim 12 , wherein the plunger surface is circular and circumscribes the cavity, and the liner is arcuate in shape.

15 . The method according to claim 14 , wherein the liner is configured to extend at least to a level of a shot of molten material.

16 . The method according to claim 12 , wherein the liner includes an unmachined surface proud of shot sleeve body, and comprising the step of machining the unmachined surface after performing the securing step to provide a machined surface providing a portion of the plunger surface.

17 . The method according to claim 1 , comprising the step of providing cooling holes in the shot sleeve body configured to be in fluid communication with a cooling fluid source, at least one cooling hole arranged beneath the liner.

18 . The method according to claim 17 , wherein the at least one cooling hole includes a cooling channel in fluid communication with a backside of the liner.

19 . The method according to claim 10 , wherein the shot sleeve body and the liner are provided by first and second materials that are different than one another.

20 . The method according to claim 10 , comprising the step of removing a worn liner and performing the securing step to provide a replacement liner.

Assignees

• United Technologies Corp

Inventors

• Lim Yuan Kwang
• Loh Yan Seng
• Tan Andrew
• Chee Yao Hui
• Wong Shih Han
• Kwan Yee Ling

Classifications

• B22D17/2023 Primary

  Nozzles or shot sleeves · CPC title

• B22D17/2038

  Heating, cooling or lubricating the injection unit (for plastics B29C45/74, B29C45/83) · CPC title