Seal tool for film-sealing machine
AssigneeUhlmann Pac-Systeme GmbH & Co. KG
InventorsGünther Felk, Wolfgang Krahl
Life of this patent
Estimating the term…
Abstract
A sealing tool for a sealing machine has a heat-conductive and normally heated support plate having an inner face and a heat-conductive seal plate having an outer face bearing in surface contact on the support-plate inner face. A central attachment extends between the plates across the faces at a point location and substantially prevents relative movement of the plates parallel to the faces at this point location. Outer attachments spaced outward from the central attachment press the faces together with a limited force such that the faces can slide parallel to each other at the outer attachments.
Claims16
A sealing tool for a sealing machine, the tool comprising:
- a heat-conductive support plate having an inner face;
- a heat-conductive seal plate having an outer face bearing in surface contact on the support-plate inner face;
- means for heating the support plate directly for heating the seal plate through the support plate;
- a central attachment extending between the plates across the faces at a point location and substantially preventing relative movement of the plates parallel to the faces at the point location, the support plate being formed with two throughgoing bores of predetermined diameter opening at the inner face and spaced outward from the central attachment, the seal plate being formed with two threaded bores each aligned with a respective one of the outer bores;
- means for heating the support plate;
- two outer bolts each having
- a threaded outer end threaded into a respective one of the threaded bores of the seal plate,
- an unthreaded shank of smaller diameter than and fitting with play in the respective bore of the support plate, and
- a head spacedly juxtaposed with an outwardly directed surface of the support plate, and
- respective elastic parts each compressed between a respective one of the heads and the respective outwardly directed surface of the support plate and pressing the faces together with a limited force such that the faces can slide parallel to each other at the outer bolts.
Dependencies are inferred from the claim text.