Fluid dispense tips

摘要

A fluid dispense tip includes a bevel at an opening to reduce the amount of surface tension, or “land”, at the opening. The bevel is formed by grinding in a longitudinal direction such that any tooling scars resulting from the grinding operation are likewise longitudinally oriented, further reducing the amount of surface tension in the tip, thereby leading to heightened dispensing accuracy. The tip may be machined from stock as a unitary piece, to increase its lifetime, and may be formed with a bore of a relatively large diameter that is tapered down to a smaller diameter near the tip opening, to allow for delivery of fluid through the tip body at a decreased pressure. A cleaning tool may be provided for removing residual material from the inner surfaces of the tip. A removable liner sleeve may be provided within the bore to reduce the effective inner diameter of the dispense tip.

主权项

1. A beveled dispense tip comprising:
an elongated neck having a longitudinal axis; an elongated hole in the neck, the hole extending from an input end region of the neck to an output end region of the neck, a portion of the elongated hole having an inner surface of a first inner diameter, and the output end region including an outlet having an inner surface of a second inner diameter, the first inner diameter being greater than the second inner diameter; an inner taper that transitions the inner surface of the hole from the first inner diameter at a first position relative to the longitudinal axis to the second inner diameter at a second position relative to the longitudinal axis, the hole being unobstructed within the first inner diameter and the second inner diameter between the input end region of the neck and the outlet in the output end region of the neck; a body at the input end region of the neck, the body including a funnel that delivers fluid to the input end region of the neck, the funnel having a funnel inlet at an input end of the funnel that is constructed and arranged to receive a flow of fluid from a material pump and a funnel outlet at an output end of the funnel; a bevel about an outermost end of the output end region of the neck, wherein the outlet extends from the inner taper to the outermost end, wherein the bevel surface lies at an acute angle relative to the longitudinal axis at the outermost end of the output end region of the neck; and an alignment foot coupled to the body, the foot having a primary axis substantially parallel to the longitudinal axis of the neck, and being of a length longer than the neck.