Claims
- 1. An injection molding apparatus comprising:
an actuator; and a valve pin coupled to the actuator, the valve pin adapted to open and close a gate to a mold, and to control a rate of material flow through the gate during an injection cycle, wherein the actuator is adapted to control the valve pin in a first range of movement in which the valve pin is adapted to control the rate of material flow and cannot close the gate, and the actuator is further adapted to control the valve pin in a second range of movement which includes the valve pin closing the gate.
- 2. An injection molding apparatus comprising:
an actuator including first and second valves; and a valve pin coupled to the actuator, the valve pin adapted to open and close a gate to a mold, and to control a rate of material flow through the gate during an injection cycle, wherein the first valve is adapted to control a range of movement of the valve pin, and the second valve is adapted to cause the valve pin to close the gate.
- 3. The injection molding apparatus of claim 2, wherein the first valve is a high speed proportional valve.
- 4. The injection molding apparatus of claim 3, wherein the second valve is a directional valve.
RELATED APPLICATIONS
[0001] This application is a continuation-in-part under 35 U.S.C. §120 of U.S. application Ser. No. 09/699,856, entitled “CONTROLLED INJECTION USING MANIFOLD HAVING MULTIPLE FEED CHANNELS”, filed Oct. 30, 2000, which is a continuation-in-part of U.S. application Ser. No. 09/503,832, entitled DYNAMIC FEED CONTROL SYSTEM, filed Feb. 15, 2000, which is a continuation-in-part of U.S. application Ser. No. 09/400,533, entitled “MANIFOLD SYSTEM HAVING FLOW CONTROL”, filed Sep. 21, 1999, which is a continuation-in-part of U.S. application Ser. No. 09/063,762, entitled “MANIFOLD SYSTEM HAVING FLOW CONTROL”, filed Apr. 21, 1998.
[0002] This application is also a continuation-in-part under 35 U.S.C. §120 of U.S. application Ser. No. 09/503,832, listed above. This application is also a continuation-in-part of U.S. application Ser. No. 09/400,533, listed above. This application also claims priority under 35 U.S.C. §119(e) to provisional application serial No. 60/299,697, filed Jun. 20, 2001, entitled “APPARATUS AND METHOD FOR UTILIZING AN ACTUATOR FOR FLOW CONTROL VALVE GATES”.
[0003] All of the foregoing applications are herein incorporated by reference.
Provisional Applications (1)
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Number |
Date |
Country |
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60299697 |
Jun 2001 |
US |
Continuation in Parts (6)
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Number |
Date |
Country |
Parent |
09699856 |
Oct 2000 |
US |
Child |
10175995 |
Jun 2002 |
US |
Parent |
09503832 |
Feb 2000 |
US |
Child |
09699856 |
Oct 2000 |
US |
Parent |
09400533 |
Sep 1999 |
US |
Child |
09503832 |
Feb 2000 |
US |
Parent |
09063762 |
Apr 1998 |
US |
Child |
09400533 |
Sep 1999 |
US |
Parent |
09503832 |
Feb 2000 |
US |
Child |
10175995 |
Jun 2002 |
US |
Parent |
09400533 |
Sep 1999 |
US |
Child |
10175995 |
Jun 2002 |
US |