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US 8,117,870 B2Granted
Long stroke blow head mechanism
AssigneeEmhart Glass S.A.
InventorTimothy A. Ringuette
Life of this patent
Estimating the term…
Abstract
An improved and mechanically simplified blow head mechanism for blowing a parison and internally cooling the blown parison is disclosed which may be used with an I.S. machine to blow a parison to form a glass container and then internally cool the blown parison below the annealing point. The blow head mechanism has a cooling tube which supplies final blow and cooling air and which is raised or lowered by raising or lowering the blow head mechanism. The blow head mechanism supports a blow head with a pressurized cylinder which maintains the blow head in a position in engagement with the finish of a parison once initially lowered irrespective of the blow head mechanism being further lowered to lower the cooling tube into the blown parison.
Claims18
A blow head mechanism for use in blowing and cooling a parison in a blow mold, said blow head mechanism comprising:
- a blow head arm;
- a blow head lift mechanism for selectively raising and lowering said blow head arm between at least a first position, a second position that is lower than said first position, and a third position that is lower than said second position;
- a blow head support apparatus having a first end mounted on a bottom side of said blow head arm and an opposite second end extending downwardly therefrom, said blow head support apparatus having extended and contracted configurations and being biased from said contracted configuration toward said extended configuration;
- a blow head mounted under said second end of said blow head support apparatus;
- and
- a cooling tube having a first end and an opposite second end, said first end of said cooling tube being fixedly mounted from said blow head arm, said second end of said cooling tube extending downwardly through an aperture in said blow head;
- wherein when said blow head arm is in said first position said blow head is located above the finish of a parison in the blow mold;
- and
- wherein when said blow head arm is in said second position said blow head is located in engagement with the finish of the parison in the blow mold and the second end of said cooling tube is located proximate the top of the blow mold;
- and
- wherein when said blow head arm is in said third position said blow head remains located in engagement with the finish of the parison in the blow mold and the second end of said cooling tube is located below the top of the blow mold within the parison.
8 more elements
A blow head mechanism for use in blowing and cooling a parison in a blow mold, said blow head mechanism comprising:
- a blow head arm;
- a blow head lift mechanism for selectively raising and lowering said blow head arm between at least a first position, a second position that is lower than said first position, and a third position that is lower than said second position;
- a blow head support apparatus having a first end mounted on a bottom side of said blow head arm and an opposite second end extending downwardly therefrom, said blow head support apparatus having extended and contracted configurations and being biased from said contracted configuration toward said extended configuration;
- a blow head mounted under said second end of said blow head support apparatus;
- and
- a cooling tube having a first end and an opposite second end, said first end of said cooling tube being fixedly mounted from said blow head arm, said second end of said cooling tube extending downwardly through an aperture in said blow head;
- a first air passage within said blow head arm to supply air from a first inlet on said blow head arm to said first end of said cooling tube to supply final blow air and cooling air to the parison in the blow mold;
- a second air passage within said blow head arm and said blow head support apparatus to supply finish cooling air from a second inlet on said blow head arm to said blow head;
- a third air passage within said blow head arm to supply pressurized air from a third inlet on said blow head arm to said blow head support apparatus at said first end thereof to bias said blow head support apparatus from said contracted configuration toward said extended configuration;
- wherein when said blow head arm is in said first position said blow head is located above the finish of a parison in the blow mold;
- and
- wherein when said blow head arm is in said second position said blow head is located in engagement with the finish of the parison in the blow mold and the second end of said cooling tube is located proximate the top of the blow mold;
- and
- wherein when said blow head arm is in said third position said blow head remains located in engagement with the finish of the parison in the blow mold and the second end of said cooling tube is located below the top of the blow mold within the parison.
11 more elements
A blow head mechanism for use in blowing and cooling a parison in a blow mold, said blow head mechanism comprising:
- a blow head arm;
- a blow head lift mechanism for selectively raising and lowering said blow head arm;
- a blow head support apparatus mounted under said blow head arm and having a blow head mounted on a bottom end thereof, said blow head support apparatus having extended and contracted configurations and being biased from said contracted configuration toward said extended configuration;
- and
- a cooling tube having an end fixedly mounted from said blow head arm and a lower end extending downwardly through an aperture in said blow head;
- wherein when said blow head arm is in an upward position said blow head is located above the finish of a parison in the blow mold;
- and
- wherein when said blow head arm is in an intermediate position said blow head is located in engagement with the finish of the parison in the blow mold and the lower end of said cooling tube is located proximate the top of the blow mold;
- and
- wherein when said blow head arm is in a lowered position said blow head remains located in engagement with the finish of the parison in the blow mold and the lower end of said cooling tube is located below the top of the blow mold within the parison.
7 more elements
A method for operating a blow head mechanism to blow and cool a parison in a blow mold, said method comprising:
- supporting a blow head at a bottom end of a blow head support apparatus having an opposite top end mounted on a bottom side of a blow head arm, said blow head support apparatus having extended and contracted configurations, said blow head arm having a cooling tube having a top end fixedly mounted from said blow head arm, said cooling tube also having an opposite bottom end extending downwardly through an aperture in said blow head;
- biasing said blow head support apparatus from said contracted configuration toward said extended configuration;
- and
- selectively raising and lowering said blow head arm with a blow head lift mechanism between at least a first position in which said blow head is located above the finish of a parison in the blow mold, a second position that is lower than said first position in which said blow head is located in engagement with the finish of the parison in the blow mold and the second end of said cooling tube is located proximate the top of the blow mold, and a third position that is lower than said second position in which said blow head remains located in engagement with the finish of the parison in the blow mold and the second end of said cooling tube is located below the top of the blow mold within the parison.
1 more element
Dependencies are inferred from the claim text.