Invention Grant
US4494433A Apparatus for working on sheet material and having movable vacuum chamber 失效
用于在片材上加工并具有可移动真空室的装置

Apparatus for working on sheet material and having movable vacuum chamber
Abstract:
An apparatus for cutting sheet material as a cantilever vacuum table with a fluid permeable support surface upon which sheet material may be spread. A movable vacuum box supported below the surface of the table defines a vacuum chamber and is connected outboard of a free edge of the table to a carriage assembly which moves a blade in cutting relation to material spread on the table in response to signals received from a programmable controller. The vacuum box moves with the blade and relative to the table to apply vacuum to a limited area of the table immediately surrounding the cutting region of the blade.
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