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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) / 85K

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