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US 4,369,587 AGranted
Drier for screen printed sheets
OwnerBernard Davidinventor
Life of this patent
Estimating the term…
Abstract
This drier for serigraphic-process screen printing sheets comprises an endless conveyor supported by a frame structure associated with means for blowing non-heated air onto the sheets. The conveyor comprises in combination, a plurality of trays each comprising a solid air-tight support surface mounted on a frame, a deflector edge fixed to the side of the frame of a tray adjoining the conveyor, a plurality of nippers placed on said deflector edge, means for hinging each tray to the conveyor, said combination of means allowing a current of air coming from the deflector side to reach a very high speed without damaging or blowing away the sheets supported by the trays.
Claims10
A drier for sheets printed by serigraphy, comprising a chassis formed as a duct;
- an endless conveyor supplied by said chassis;
- a plurality of sheet-receiving trays hingedly connected with said conveyor and each having a frame and a solid air-tight sheet support mounted on said frame, said frame of each of said trays having one side which is adjacent to said conveyor and is hingedly connected with the latter;
- a deflector edge fixed to said one side of said frame of each of said trays;
- a plurality of nippers placed on said deflector edge at said one side of said frame of each of said trays;
- means for hingedly connecting said trays to said conveyor and being connected with said one side of said frame of each of said trays and with said conveyor;
- an air-blowing device connected with said duct-forming chassis, so that a current of air blown by said air-blowing device is directed by said duct-forming chassis to a bottom of each of said trays and then travels between said trays;
- means for immobilizing said trays in a predetermined position;
- means for correcting a position of said trays;
- cooperating means which cooperate with said immobilizing and correcting means for alternately releasing the same from said tray and replacing them in a path of said trays;
- means for rotating said conveyor with said trays;
- and a micro-contact placed in the path of said trays and arranged so that it interrupts the operation of said means for rotating said conveyor and actuates said cooperating means for correcting a next one of said trays so as to put the same exactly to a position where a wet sheet is to be placed.
8 more elements
A drier for sheets printed by serigraphy, comprising a chassis formed as a duct and having a front and a rear;
- an endless conveyor supported by said chassis;
- a plurality of sheet-receiving trays hingedly connected with said conveyor and each having a frame and a solid air-tight sheet support mounted on said frame, said frame of each of said trays having one side which is adjacent to said conveyor and is hingedly connected with the latter;
- a deflector edge fixed to said one side of said frame of each of said trays;
- a plurality of nippers placed on said deflector edge at said one side of said frame of each of said trays;
- means for hingedly connecting said trays to said conveyor and being connected with said one side of said frame of each of said trays and with said conveyor;
- an air-blowing device connected with said duct-forming chassis, so that a current of air blown by said air-blowing device is directed by said duct-forming chassis to a bottom of each of said trays and then travels between said trays;
- means for rotating said conveyor;
- and means at said rear for reversing a position of said trays with respect to a vertical and accelerating their passing over the vertical, said rotating means including two rear pinions spaced from one another, and said reversing means including an intermediate pinion arranged between said rear pinions so as to cause said conveyor to assume an oblique path, said intermediate pinion having a number of teeth exceeding that of said rear pinions and thereby causing said trays to pass rapidly to a vertical position and rotation at said rear of said trays loaded with sheets, while preventing the sheets from creasing by falling on themselves.
5 more elements
A drier for sheets printed by serigraphy, comprising a chassis formed as a duct;
- an endless conveyor supported by said chassis and including a chain having a plurality of lugs with a hole in the latter;
- a plurality of sheet-receiving trays hingedly connected with said conveyor and each having a frame and a solid air-tight sheet support mounted on said frame, said frame of each of said trays having one side which is adjacent to said conveyor and is hingedly connected with the latter;
- a deflector edge fixed to said one side of said frame of each of said trays;
- a plurality of nippers placed on said deflector edge at said one side of said frame of each of said trays;
- means for hingedly connecting said trays to said conveyor and being connected with said one side of said frame of each of said trays and with said conveyor, said hingedly connecting means including extensions which are integral with said frame of each of said trays and fit into a respective one of said holes of said lugs of said chain, said extensions of said frames of said trays carrying a washer with one part extending at an angle to a plane perpendicular to a respective one of said extensions.
2 more elements
Dependencies are inferred from the claim text.