Apparatus for the treatment of board-like articles, particularly printed circuit boards
AssigneeGebr. Schmid GmbH & Co.
InventorChristian Schmid
Life of this patent
Estimating the term…
Abstract
In order when treating printed circuit boards with liquids, particularly during cleaning, etching, metallizing or rinsing, to achieve a precisely time measurable and effective treatment, the area supplied by means of a spray or swell nozzle or a stationary wave is limited by suction devices (24, 25, 41, 42). The latter are positioned upstream and downstream of the application (28, 38). The spray or suction nozzles (22, 24, 25) are arranged in a common casing and the boards (12) to be treated move horizontally passed its lower periphery.
Claims20
Apparatus for treating board-like articles with a fluid treatment medium, comprising:
- conveying means for conveying said articles on a substantially horizontal conveying path in a conveying direction through a surface treatment area;
- restricted surface area treatment means situated adjacent to the conveying path including:
- applicator means situated in said surface treatment area for applying said fluid treatment medium to a restricted surface area of the articles that is limited by boundaries, and
- suction means for removing said fluid treatment medium from said articles near at least one of said boundaries by suction;
- wherein said restricted surface area treatment means define an operating width adjustable with at least one variable cover to accommodate an overall width extension of the restricted surface area;
- and
- wherein at least one of said covers is a belt, said covers being drivingly adjustable in opposite directions.
Apparatus for treating board-like articles with a fluid treatment medium, comprising:
- conveying means for conveying said articles on a substantially horizontal conveying path in a conveying direction through a surface treatment area;
- and
- restricted surface area treatment means situated adjacent to the conveying path including:
- applicator means situated in said surface treatment area for applying said fluid treatment medium to a restricted surface area of the articles that is limited by boundaries, and
- suction means for removing said fluid treatment medium from said articles near at least one of said boundaries by suction;
- wherein said restricted surface area treatment means define an operating width adjustable with at least one variable cover to accommodate an overall width extension of the restricted surface area, said variable cover comprising at least one flexible, liquid-tight belt for variably at least partly covering at least one fluid passage opening of said restricted surface area treatment means, said belt having an elongated, window-shaped opening defining an overlapping area common with said fluid passage opening, and wherein means are provided for varying said overlapping area.
Apparatus for treating board-like articles with a fluid treatment medium, comprising:
- conveying means for conveying said articles on a substantially horizontal conveying path in a conveying direction through a surface treatment area;
- and
- restricted surface area treatment means situated adjacent to the conveying path including:
- applicator means situated in said surface treatment area for applying said fluid treatment medium to a restricted surface area of the articles that is limited by boundaries, and
- suction means for removing said fluid treatment medium from said articles near at least one of said boundaries by suction;
- wherein said restricted surface area treatment means define an operating width adjustable with at least one variable cover to accommodate an overall width extension of the restricted surface area, said restricted surface area being bounded by two opposed covers having through openings commonly defining a window-like opening bounded substantially over its entire perimeter by said covers.
Dependencies are inferred from the claim text.