Browse Prior Art Database

STENCIL NEST QUICK DISCONNECT

IP.com Disclosure Number: IPCOM000006527D
Original Publication Date: 1992-Aug-01
Included in the Prior Art Database: 2002-Jan-11
Document File: 2 page(s) / 73K

Publishing Venue

Motorola

Related People

Israel Garcia: AUTHOR [+2]

Abstract

Flexible manufacturing has made it possible to run a fully automated factory where the production of vari- ous product mixes with a minimum changeover time takes place. In changing the stencil nests at the solder printer machine can be a gating element in achieving quick and accurate changeover. This invention was for- mulated with the intent of reducing changeover time in stencil nests styles.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 69% of the total text.

Page 1 of 2

0 M

MOTOROLA INC. Technical Developments Volume 16 August 1992

STENCIL NEST QUICK DISCONNECT

by Israel Garcia and Rafael Rodriguez

  Flexible manufacturing has made it possible to run a fully automated factory where the production of vari- ous product mixes with a minimum changeover time takes place. In changing the stencil nests at the solder printer machine can be a gating element in achieving quick and accurate changeover. This invention was for- mulated with the intent of reducing changeover time in stencil nests styles.

  The innovation consists of a set of notched guide pins placed at each end of the stencil nest, or where allowable according to design parameters. These pins will have a 45 degree notch on the side to provide a locking area.

  The solder printer vacuum base will have bronze bush- ings directly in line with the stencil nest guide pins. These bushings will have a spring loaded ball plunger (Figure l), or an optional pneumatic cylinder with a locking plunger

(Figure 2) installed perpendicular to the bushings.

  In the case of the spring plunger, the spring will pro- vide the necessary compliance for the guide pins to go through, and enough pressure to lock them in place at the notched area.

  In the case of the air cylinder, the cylinder will retract allowing the pins insertion and it will extend on com- mand to provide the necessary pressure to lock the guide pins in place at the notched area.

  In both cases the pins length can be adjusted to ensure prop...