US 2002/0119213 A1 · Force isolating cradle

Abstract

The present invention relates broadly to an injection molding machine and more particularly to a force isolating barrel and carriage assembly for use in an injection unit of an injection molding machine. Conventional barrels and carriages direct axial carriage force through the entire length of the barrel. Reactive injection force is also directed through the entire length of the barrel. A barrel and carriage assembly is disclosed for isolating a barrel from axial forces. In one aspect of the invention, the entire barrel is isolated from axial carriage force. In another aspect of the invention, a portion of the barrel is isolated from axial carriage force. In another aspect of the invention, a portion of the barrel is isolated from reactive injection force.

Claims37

Dependent claims

A force isolating barrel and carriage assembly for use in an injection unit of an injection molding machine comprising:

a barrel,
a carriage, and
a carriage stop,
said barrel having a discharge end and a second end;
said barrel having a lengthwise axial bore extending between said discharge end and said opening for receiving a reciprocating screw,
said carriage having a cradle member,
said barrel mounted in said cradle member,
said carriage stop for communicating with said carriage and a stationary member on said injection molding machine,
wherein application of an axial carriage force directed to said carriage directs to said carriage stop substantially isolating said barrel from said axial carriage force.

6 more elements

A force isolating barrel and carriage assembly for use in an injection unit of an injection molding machine comprising:

a barrel,
a carriage,
a first barrel coupler, and
a first carriage coupler,
said barrel having a discharge end and a second end,
said barrel having a lengthwise axial bore extending between said discharge end and said opening for receiving a reciprocating screw,
said first barrel coupler disposed on said barrel intermediate said barrel discharge end and said second end of said barrel,
said barrel having a first barrel portion between said barrel discharge end and said first barrel coupler,
said barrel having a second barrel portion between said first barrel coupler and said second end of said barrel,
said first carriage coupler disposed on said carriage,
said barrel secured to said carriage by interlocking said first barrel coupler and said first carriage coupler,
wherein application of an axial carriage force directed to said carriage directs to said first carriage coupler to said barrel coupler to said first portion of said barrel thereby isolating said second portion of said barrel from said axial carriage force.

9 more elements

Dependencies are inferred from the claim text.

Force isolating cradle

Life of this patent

Force isolating cradle

Life of this patent

Abstract

Claims37