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Method for the redistribution of nozzle vacuum for the pick-and-placement of compliant preform material

IP.com Disclosure Number: IPCOM000012198D
Publication Date: 2003-Apr-16
Document File: 3 page(s) / 93K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for the redistribution of nozzle vacuum for the pick-and-placement of compliant preform material. Benefits include improved production yield.

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Method for the redistribution of nozzle vacuum for the pick-and-placement of compliant preform material

Disclosed is a method for the redistribution of nozzle vacuum for the pick-and-placement of compliant preform material. Benefits include improved production yield.

Background

        � � � � � The conventional (process of record, POR) nozzle design tends to deform the preform during pick-and-placement (see Figure 1). This type of design concentrates the vacuum in the center of the preform, which causes a doming effect (see Figure 2). The area raises and can trap air or flux, which can contribute to reflow problems, such as voiding or non-wetting of the material in this location.

        � � � � � The conventional solution is to implement vacuum channels. However, the doming effect in the center of the preform over the die surface continues to occur.

Description

        � � � � � The disclosed method is a pick-and-place nozzle that does not deform compliant preform material during processing. The method includes a design that redistributes the vacuum, such as toward the outer edge of the nozzle. Various types of design configurations can be implemented (see Figure 3).

Advantages

        � � � � � The disclosed method provides advantages, including:

•        � � � � Improved production yield due to enabling pick-and-placement of a compliant preform material without changing the physical characteristics of the preform by deformation

Fig. 1

Fig. 2

Fig. 3

Disclosed anonymously