POWDER COATING CABIN OR SUBSTRUCTURE THEREFOR

• US 20090272317A1
• Filed: 02/04/2005
• Published: 11/05/2009
• Est. Priority Date: 12/09/2004
• Status: Active Grant

• Current Assignee: Gema Switzerland GmbH (Graco Incorporated)
• Original Assignee: ITW Gema GmbH (Illinois Tool Works Inc.)
• Inventors: Gelain, Silvano
• Granted Patent: US 8,371,242 B2
• Time in Patent Office: Days
• US Class Current: 118/309
• CPC Class Codes: B05B 14/48 specially adapted for particulate material
• CPC Class Codes: B05B 16/40 Construction elements specially adapted therefor, e.g. floors, walls or ceilings ceiling elements filtering inflow of air into the booth B05B16/60; walls specially adapted for promoting separation of excess material B05B14/44

Abstract

In a powder spraycoating cabin or substructure for same, a cabin bottom contains bottom flaps configured near outer longitudinal walls and a walk-on bottom part situated between the bottom flaps. The bottom flaps are rotatable about an axis of rotation running in the lengthwise cabin direction, as a result of which the width of lengthwise bottom gaps situated bilaterally about the flaps can be varied. A suction duct is situated underneath. The walk-on bottom part is fitted with compressed-air outlets to blow compressed air toward/into the lengthwise bottom gaps.

Claims

1. A powder spraycoating cabin or substructure for same, containing a cabin bottom above which objects to be coated may be moved in a longitudinal cabin direction through said cabin, further containing outer longitudinal walls,

wherein

outer bottom flaps acting as bottom components are configured adjacently to the outer longitudinal walls and are rotatable about a longitudinal axis of rotation, one outer lengthwise bottom gap each being subtended between the outer bottom flaps and the longitudinal;

the two outer bottom flaps subtend between them a zone accommodating at least one further bottom part one of which being configured at the transverse cabin center as the central bottom part;

an inner lengthwise bottom gap is constituted in each case on the inner side of the outer bottom flaps away from the outer lengthwise bottom gap each time between the outer bottom flap and its adjacent minimum of one further bottom part;

the width of the lengthwise bottom gaps is adjustable by rotating their adjacent bottom flaps;

the bottom flaps and the lengthwise bottom gaps are configured above at least one suction duct and overlap same;

at least one of the minimum of one further bottom part is a walk-on bottom part;

the walk-on bottom part is fitted at its top side with compressed-air outlets to blow compressed air across the surface of the walk-on bottom part toward at least one of the lengthwise bottom gaps situated on both longitudinal sides of the walk-on bottom part.

2. Powder spraycoating cabin or substructure for same, as claimed in claim 1, wherein the central bottom part is the walk-on bottom part and the inner lengthwise gaps are bounded on one hand by said walk-on central bottom part and on the other hand by the two outer bottom flaps.

3. Powder spraycoating cabin or substructure for same as claimed in claim 1, wherein the bottom central part is designed as the walk-on bottom part;

that one inner bottom flap each is configured between the walk-on central bottom part and the two outer bottom flaps;

the inner bottom flaps are rotatable about a longitudinal axis of rotation and by their outer side jointly with the outer bottom flaps bound the inner lengthwise bottom gaps and by their inside jointly with the walk-on central bottom part bound innermost lengthwise bottom gaps, the inner bottom flaps and the innermost lengthwise bottom flaps being configured above the minimum of one suction duct and overlapping same.

4. Powder spraycoating cabin or substructure for same as claimed in claim 1, wherein the central bottom part is a bottom flap rotatable about a longitudinal axis of rotation;

one walk-on bottom part configured each between the central bottom flap and the two outer bottom flaps and by its inner side jointly with the central bottom flap constitutes an innermost lengthwise bottom gap and by its outer side jointly with the associated outer bottom flap bounds one of the two inner lengthwise bottom gaps,

the central bottom flap and the innermost lengthwise bottom gaps it bounds being configured above the minimum of one suction,

said suction duct being open relative to the central bottom flap and relative to the innermost lengthwise bottom gap.

5. Powder spraycoating cabin or substructure for same as claimed in claim 1, wherein the top side of at least one of the bottom flaps is fitted with compressed-air outlets to blow compressed air toward at least one of the lengthwise bottom gaps which are bounded by said bottom flap.

6. Powder spraycoating cabin or substructure for same as claimed in claim 5, wherein a path for compressed-air is configured axially relative to the axis of rotation into the minimum of one bottom flap and within same transversely to the axis of rotation as far as the top side of said bottom flap.

7. Powder spraycoating cabin or substructure for same as claimed in claim 1, wherein said cabin or substructure is fitted at least at one longitudinal end, preferably at both longitudinal ends, with at least one suction aperture in the cabin bottom above one of the minimum of one suction duct and communicates with said suction duct.

8. Powder spraycoating cabin or substructure for same as claimed in claim 7, wherein at least one of the suction apertures is configured opposite an end face of the outer bottom flaps.

9. Powder spraycoating cabin or substructure for same as claimed in claim 1, wherein at least one of the suction apertures is configured in a longitudinal end segment of the walk-on bottom part or adjoins an end face of the walk-on bottom part.

10. Powder spraycoating cabin or substructure for same claimed in claim 1, wherein several suction ducts are allotted to different lengthwise bottom gaps and to different bottom flap.

11. Powder spraycoating cabin or substructure for same as claimed in claim 1, wherein lengthwise bottom gaps configured transversely farther away from the cabin center or substructure center exhibit a gap width defined for spraycoating which is wider than the gap width of the centrally configured lengthwise bottom gaps.

12. Powder spraycoating cabin or substructure for same as claimed in claim 1, wherein the bottom parts which are transversely farther removed from the transverse center of said cabin or substructure and which are in the form of a walk-on bottom part or of one of the bottom flaps, are configured higher than those bottom parts which are situated more centrally,

the underside of the bottom flaps being situated higher at least at the inner lengthwise flap side than the top side of the inner, adjacent bottom part.

13. Powder spraycoating cabin or substructure for same as claimed in claim 1, wherein the inner flap part of the outer bottom flaps overlaps the adjacent bottom part when the outer bottom laps are adjusted to a minimum width of the inner lengthwise bottom gap.