Method of controlling constant temperature inside a shrink-fitti

Details Method of controlling constant temperature inside a shrink-fitti Method of controlling constant temperature inside a shrink-fitti

1989-08-21

1991-07-16

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

29DIG35, 65162, B23P 1102, C03B 2700

Patent

active

050312987

ABSTRACT:
A method of controlling the temperature in a tunnel open at both ends and along which objects are displaced by conveyor means, the tunnel including heating or cooling means disposed along its two side walls between which the conveyed objects pass. According to the invention, the temperature is sensed in a particular zone of the tunnel in which a predetermined temperature is desired, and in organizing transverse displacement of the heating or cooling means (104) is organized in a direction essentially perpendicular to the direction in which the objects (103) are conveyed by means of a servo-control system causing the heating or cooling means to be displaced automatically mutually towards each other or away from each other whenever the sensed temperature differs from the predetermined temperature, thereby having the effect of permanently ensuring a constant temperature environment for the objects concerned in the above-mentioned zone of the tunnel. The invention is particularly suitable for shrinking heat-shrink sleeves onto flasks for decorative and/or protective purposes, and it is also suitable for cooling down glass receptacles.

REFERENCES:
patent: 4601743 (1986-07-01), Canfield
patent: 4767434 (1988-08-01), Schwartz et al.
patent: 4870802 (1989-10-01), Cerf

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