Browse Prior Art Database

Wave Solder Linear Motion Detection and Control Apparatus

IP.com Disclosure Number: IPCOM000047830D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Manner, HH: AUTHOR [+3]

Abstract

The purpose of a wave solder operation is to pass a product through a wave of molten solder at a specified rate of speed to allow solder to adhere to the product. The inherent environment (high temperature and vapor) of wave solder equipment can be detrimental to the product passing through if set conditions are not adhered to. The immediate withdrawal of costly product from contact with high temperature (in case of transport failure) is of utmost importance. The addition of linear motion detection and control apparatus to this process avoids this loss of product. The apparatus comprises independent encoder wheels which are driven by floating contacts (not shown) on the product carrier.

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Wave Solder Linear Motion Detection and Control Apparatus

The purpose of a wave solder operation is to pass a product through a wave of molten solder at a specified rate of speed to allow solder to adhere to the product. The inherent environment (high temperature and vapor) of wave solder equipment can be detrimental to the product passing through if set conditions are not adhered to. The immediate withdrawal of costly product from contact with high temperature (in case of transport failure) is of utmost importance. The addition of linear motion detection and control apparatus to this process avoids this loss of product. The apparatus comprises independent encoder wheels which are driven by floating contacts (not shown) on the product carrier. The encoder wheels, optical sensors and relays are utilized to provide pulses to activate solid-state circuits within the programmable controller. The timing of these pulses bear a relationship to the actual speed at which product is passing over the solder wave. If variation in this transport motion is sensed during a product run a non-linear motion detect circuit within the controller energizes relays which de-energize both solder wave pumps and conveyor motors.

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