Claims
- 1. A method of supplying a plastic from a retrofitted plasticating screw machine to a mold or die for the manufacture of a plastic part therefrom, comprising the steps of:
- providing an elongated rotatable screw shaft within an elongated barrel housing, said housing having a mold or die adjacent a distal end thereof;
- machining a longitudinally directed bore through said elongated screw shaft from a location proximal of a distal tip end through said distal tip end thereof to permit said screw shaft to be retrofitted;
- fitting at least one delivery conduit to said bore, so as to permit a medium to be directed through said retrofitted screw shaft to any plastic being delivered to said mold or die adjacent said distal end of said housing;
- attaching a medium supply duct to a proximal end of said bore to permit a medium to be delivered to said bore and through said distal tip end of said bore in said retrofitted screw shaft and to a plastic being worked at said distal end of said screw shaft; and
- supplying a plastic to said mold or die from said screw machine.
- 2. The method of supplying a plastic from a retrofitted plasticating screw machine to a mold or die for the manufacture of a plastic part therefrom, as recited in claim 1, comprising the steps of:
- fitting at least one delivery conduit through said bore, so as to permit a medium to be directed through said retrofitted screw shaft to any plastic being delivered to said mold or die adjacent said distal end of said housing; and
- attaching a medium supply duct to a proximal end of said conduit to permit a medium to be delivered through said conduit and through said distal tip end of said retrofitted screw shaft and to a plastic being worked at said distal end of said screw shaft.
- 3. The method as recited in claim 2, including the step of:
- moving said delivery conduit longitudinally with respect to said screw shaft, to permit controlled delivery of the longitudinal location of any medium with respect to said screw shaft.
- 4. The method as recited in claim 3, including the step of:
- arranging a plurality of conduits within said bore of said screw shaft, to permit the delivery of a plurality of mediums therethrough, to allow any plastic driven from said housing to be treated by said mediums.
- 5. The method as recited in claim 4, including the step of:
- supplying any medium to said proximal end of said conduits, selected from the group consisting of: a vapor, a cooling gas, a heated gas, a liquid, an optical fiber, a reinforcing fiber, an electrical conductor, and electrical resistor.
- 6. The method as recited in claim 1, including the step of:
- placing an inarticle pin into said mold to supply or evacuate a medium therefrom, said inarticle pin having a conduit arranged therewith to provide such supply or evacuation process thereto.
- 7. The method as recited in claim 5, including the step of:
- controlling the timing of the use of said inarticle pin to the supply of medium passing into said plastic in said mold through said delivery conduit, by a control circuit connected therebetween.
Parent Case Info
The present invention relates to an arrangement for retrofitting screw machines for molding products from a plastic material, this Application being a Continuation-In-Part Application of U.S. patent application Ser. No. 08/773,875 now U.S. Pat. No. 5,744,092, filed Dec. 30, 1996 which is a Continuation-In-Part of U.S. patent application Ser. No. 08/511,055, filed Aug. 3, 1995 now U.S. Pat. No. 5,670,112 which is a Continuation-In-Part Application of U.S. application Ser. No. 08/393,200, filed Feb. 23, 1995, now abandoned each of which are incorporated herein by reference.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3387331 |
Billings |
Jun 1968 |
|
3902704 |
Ishibashi et al. |
Sep 1975 |
|
4174935 |
Driskill |
Nov 1979 |
|
Continuation in Parts (3)
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Number |
Date |
Country |
Parent |
773875 |
Dec 1996 |
|
Parent |
511055 |
Aug 1995 |
|
Parent |
393200 |
Feb 1995 |
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