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
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.
대표청구항▼
1. A dispense tip comprising: an elongated neck having a longitudinal axis, an elongated hole along the longitudinal axis, and an opening at an end of the neck, the hole providing a fluid path that extends from an input end region of the neck to an output end region of the neck, a portion of the elo
1. A dispense tip comprising: an elongated neck having a longitudinal axis, an elongated hole along the longitudinal axis, and an opening at an end of the neck, the hole providing a fluid path that extends 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, wherein the fluid path only narrows in diameter or remains constant in diameter from the input end region of the neck to the first position of the inner taper along the longitudinal axis; anda bevel at the opening at 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 neck has an outer surface that is linear in extension along and parallel to the longitudinal axis and of a constant outer diameter from a region proximal the elongated hole having the inner surface of the first inner diameter to the bevel. 2. The dispense tip of claim 1, further comprising 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. 3. The dispense tip of claim 2, wherein the funnel comprises: 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; anda funnel outlet at an output end of the funnel. 4. The dispense tip of claim 2, further comprising 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. 5. The dispense tip of claim 4, wherein the body includes a bore adjacent the funnel, and wherein the alignment foot is positioned in the bore for coupling to the body. 6. The dispense tip of claim 1, wherein a bevel surface lies at an acute angle relative to the longitudinal axis at the outermost end of the output end region of the neck. 7. The dispense tip of claim 1, wherein the bevel has an outer surface of a second length in a direction along the longitudinal axis, and wherein the second length of the bevel outer surface is greater than a first length of the outlet. 8. The dispense tip of claim 2, wherein the body and the neck are formed of different materials. 9. The dispense tip of claim 2, wherein the neck comprises ceramics and the body comprises at least one of stainless steel, ceramics, composites, glass, and epoxy. 10. The dispense tip of claim 2, wherein at least one of the neck and the body comprises a composite or a ceramic. 11. The dispense tip of claim 1, wherein the inner taper is proximal to the output end region of the neck. 12. The dispense tip of claim 1, wherein the portion of the elongated hole having the inner surface of the first inner diameter is proximal to the input end region of the neck. 13. The dispense tip of claim 1, wherein the portion of the elongated hole having the inner surface of the first inner diameter is proximal to the output end region of the neck. 14. A method of forming a dispense tip, comprising: providing an elongated neck having a longitudinal axis;forming an elongated hole in the neck along the longitudinal axis and an opening at an end of the neck, the hole providing a fluid path that extends 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;forming 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, wherein the fluid path only narrows in diameter or remains constant in diameter from the input end region of the neck to the first position of the inner taper along the longitudinal axis; andforming a bevel at the opening at 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 neck has an outer surface that is linear in extension along and parallel to the longitudinal axis and of a constant outer diameter from a region proximal the elongated hole having the inner surface of the first inner diameter to the bevel. 15. The method of claim 14, wherein forming at least one of the elongated neck, the elongated hole in the neck, the inner taper, or the bevel includes machining or molding. 16. The dispense tip of claim 1, wherein a wall of the neck between the inner surface of the first inner diameter to the outer surface that is linear in extension along and parallel to the longitudinal axis and of a constant outer diameter has a constant thickness from the input end region of the neck to the bevel. 17. A dispense tip comprising: an elongated neck having a longitudinal axis, an elongated hole along the longitudinal axis, and an opening at an end of the neck, the hole providing a fluid path that extends 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, wherein the fluid path only narrows in diameter or remains constant in diameter from the input end region of the neck to the first position of the inner taper along the longitudinal axis;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;a bevel at the opening at an outermost end of the output end region of the neck, wherein the outlet extends from the inner taper to the outermost end; andan 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. 18. The dispense tip of claim 17, wherein the body includes a bore adjacent the funnel, and wherein the alignment foot is positioned in the bore for coupling to the body.
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