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Method for a liquid spray apparatus that can adapt to a standard solder paste print application machine

IP.com Disclosure Number: IPCOM000006859D
Publication Date: 2002-Feb-06
Document File: 3 page(s) / 61K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for a liquid spray apparatus that can adapt to a standard solder paste print application machine. Benefits include improved performance and process simplification.

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Method for a liquid spray apparatus that can adapt to a standard solder paste print application machine

Disclosed is a method for a liquid spray apparatus that can adapt to a standard solder paste print application machine. Benefits include improved performance and process simplification.

Background

              New metal stencils (tooling) are required for each new product form factor.

              The flux printing process stencils conventionally require a flat surface to print on. Print flux cannot be printed on electronic substrates that have premounted electronic components.

              Slow equipment speeds result from the three process steps that are required to apply the flux to the electronic substrate (see Figure 1). Flux printing is becoming a manufacturing line throughput limiter with high-speed electronic component placement systems.

Description

               The disclosed method includes a liquid jetting apparatus that can be fitted to a standard solder paste printing machine used in the surface mount assembly industry. This application deposits liquid flux onto electronic assemblies of varying size and topographies in one step (see Figure 2).

              The nozzle array is fitted to the squeegee print head assembly in the same manner as a solder paste blade assembly. This configuration enables quick-change of the nozzle array assembly for maintenance and to accommodate difference product spacing.

              Stencil printing machines already have the electronic control systems to align the substrate in the machine. They also have the...