System and method for adjusting the land channel length on an extrusion die
AssigneeNordson Corporation
InventorsSalvatore G. Iuliano, Michael K. Truscott
Life of this patent
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Abstract
An extrusion die with adjustable land channel can be formed of a die body that includes a first die body portion and a second die body portion, a first lip body, a second lip body, and a land channel body. The extrusion die can have a flow channel that includes a land channel terminating in an outlet orifice. The flow channel may be bound on one side by the first die body portion, the land channel body, and the first lip body. The flow channel may be bound on an opposite side by the second die body portion and the second lip body. In some examples, the length of the land channel is adjustable by configuring the land channel body and/or first lip body to move across the width of the flow channel.
Claims12
A method of adjusting a length of a land channel using an extrusion die having a flow channel terminating in an outlet orifice, the flow channel being bound on one side by at least a first die body, a land channel body, and a first die lip and being bound on an opposite side by at least a second die body and a second die lip, the method comprising:
- advancing, via an adjustment mechanism, said first die lip toward said second die lip by a first distance and thereby adjusting a width of the outlet orifice;
- and
- advancing, via the adjustment mechanism, said land channel body toward at least one of said second die body and said second die lip by a second distance and thereby adjusting the length of the land channel, wherein the second distance is less than the first distance, and wherein the land channel body includes a land channel face and an edge upstream from the land channel face, the edge being angled toward the outlet orifice.
A method of adjusting a length of a land channel using an extrusion die having a flow channel terminating in an outlet orifice, the flow channel being bound on one side by at least a first die body;
- a land channel body, and a first die lip and being bound on an opposite side by at least a second die body and a second die lip, the method comprising:
- advancing, via an adjustment mechanism operatively coupled to said land channel body, said first die lip toward said second die lip and thereby adjusting a width of the outlet orifice;
- and
- advancing, via said adjustment mechanism, said land channel body toward at least one of said second die body and said second die lip and thereby adjusting the length of the land channel,
- wherein said adjustment mechanism comprises a cam arm having a plurality of slots, said land channel body has a plurality of pins, and said plurality of pins of said land channel body are inserted into said plurality of slots of said cam arm, and
- wherein using said adjustment mechanism to move said land channel body comprises advancing or retracting said cam arm to thereby cause said plurality of pins to translate in said plurality of slots.
Dependencies are inferred from the claim text.