A quick change micro dispensing tip with disposable liner for dispensing liquid such as viscous and non-viscous adhesives in electronic component assembling. A multi-pin, positioning and locking mechanism attaches the dispensing tip to the dispensing pump. This feature increases the positioning accuracy and repeatability of coupling the tip of the pump. Additionally, the time is decreased in the coupling the tip and pump. Therefore, there exists minimal malfunction due to misalignment of pump with tip. The disposable inner liner of the quick change, micro tip is a simplified, disposable intermediary passage for the adhesive through the coupled dispensing tip with pump. This liner comprised of non-adhesive compatible, disposable material, is captive and supported by the shell of the quick change micro tip. Therefore, the liner does not require the strength necessary in current tips by incorporate the disposability necessary for cost reduction and rapid change overs between operations.
CROSS-REFERENCE TO A RELATED APPLICATION
Applicant hereby claims priority on earlier filed provisional patent application Ser. No. 60/094,302 filed Jul. 27, 1998 and entitled "Quick Change, Micro Dispensing Tip With Disposable Liner" which is incorporated herein by reference.
A needle foot assembly for a dispensing system includes a needle nut, a rotatable bearing, a friction brake, and an end piece holding the needle foot. The needle foot assembly attaches the needle to a dispensing head of the dispensing system. Rotation of the bearing alters the orientation of the needle foot and needle. The needle foot is removeably attached to the end piece and can be adjusted with respect to height.
