US3730816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for laying up multiple-ply cross-bonded plywood panels
Assignee: Leading Plywood
•
Filing: 1970-11-16
•
Granted: 1973-05-01
•
Expires: 1990-11-16
Abstract
Abstract Apparatus for laying up cross-bonded multiple-ply plywood panels comprising a main conveyor line for moving veneer sheets and core sheets, one after the other, through a glue applicator. The applicator applies a glue coating to the upper surfaces of the sheets. The sheets then move to a stacking region where the core and veneer sheets are stacked one on top of the other in the order in which they have been carried on the main conveyor line. Core sheet supply means positioned laterally of the main conveyor line delivers core sheets onto the main conveyor line. Veneer sheet supply means positioned in line with the main conveyor line delivers veneer sheets to the conveyor line. Face veneer sheet supply means superposed over the conveyor line, intermediate the glue applicator and stacking region, delivers uncoated face veneer sheets to be layed on top of a stack of core and veneer sheets in the stacking region.
Inventors
- 👤 J Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:16
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1751; Y10T156/1761; Y10T156/1776; Y10T156/1778
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
308 words
Apparatus for laying up multiple-ply cross-bonded plywood panels comprising an elongated main conveyor line for carrying interspersed veneer and core sheets one after another horizontally and in one direction therealong with the sheets oriented on the conveyor line as they are to be layed up in the panel, veneer sheet supply means adjacent the upstream end of the main conveyor line and disposed substantially in line therewith including a veneer sheet stack support for supporting a stack of veneer sheets with the veneer sheets oriented as they are to be carried on the main conveyor line, and veneer sheet conveyor means operable to lift a veneer sheet from the top of the stack and move the same in said one direction onto said main conveyor line, core sheet supply means positioned adjacent the upstream end of the main conveyor line and laterally thereof, including a core sheet stack support for supporting a stack of core sheets in a position spaced laterally of the main conveyor line with the core sheets oriented as they are to be carried on the main conveyor line, and core sheet conveyor means operable to remove a core sheet from the stack and move the same laterally of the main conveyor line onto said main conveyor line and including means for initiating movement of a core sheet in the direction of movement of the main conveyor line, a glue applicator disposed downstream in said main conveyor line from said core and veneer sheet supply means for applying glue to the upper surfaces of core and veneer sheets carried one after the other on said main conveyor line, and a stacking support onto which core and veneer sheets may be deposited, one after another from the main conveyor line with a sheet deposited being superposed over a sheet immediately preceding it on the stacking support.
Claim 2
Dependent Claim
78 words
The apparatus of claim 2, wherein said core sheet conveyor means comprises a first power-driven conveyor section operable to initiate movement of a core sheet from the core sheet stack toward said main conveyor line and a second power-driven conveyor section operable to receive a core sheet from said first conveyor section and to move the core sheet onto the main conveyor line, said second conveyor section being driven at a speed greater than said first conveyor section.
Claim 3
Dependent Claim
75 words
The apparatus of claim 2, wherein said veneer sheet conveyor means comprises a vacuum belt conveyor including an elongated, endless, power-driven vacuum belt having a substantially horizontal lower reach which substantially parallels the main conveyor line, overlies the veneer sheet stack support, and is movable under power in the direction of said main conveyor line, and means mounting said veneer sheet stack support and vacuum belt for shifting vertically toward and away from each other.
Claim 4
Dependent Claim
112 words
The apparatus of claim 4, wherein said veneer sheet conveyor means is spaced above said main conveyor line and further comprises an elongated conveyor element having an upstream end disposed adjacent said vacuum conveyor belt and extending at an incline downwardly from the vacuum conveyor belt in the direction of the main conveyor line and over the region of the main conveyor line onto which the core sheet conveyor means deposits core sheets, said element being operable to receive a veneer sheet from the vacuum conveyor belt and transport the same onto said main conveyor line in a region downstream from the region in which the core Sheet conveyor deposits core sheets.
Claim 5
Dependent Claim
74 words
The apparatus of claim 5, wherein said conveyor element comprises an endless, elongated belt having an upper reach adapted to support a veneer sheet, and which further comprises power-drive means operatively connected thereto actuatable intermittently for driving said upper reach in the direction of said main conveyor line in timed relation with the operation of the core supply means to deposit core sheets and veneer sheets in following relation on the main conveyor line.
Claim 6
Dependent Claim
128 words
The apparatus of claim 3, wherein said first conveyor section comprises a vacuum chamber in which a lower-than-atmospheric pressure may be produced disposed over said core sheet stack support, and an endless, elongated, power-driven, porous vacuum belt trained over said vacuum chamber and positioned above the core sheet stack support with a lower reach of the belt extending laterally of the main conveyor line and positioned to engage the upper surface of a top core sheet on said core sheet stack support, with openings in the belt communicating with the interior of said chamber, said belt on being driven and with a lower-than-atmospheric pressure in the vacuum chamber being operable to hold a core sheet against its lower reach and move the same toward the main conveyor line.
Claim 7
Dependent Claim
160 words
The apparatus of claim 7, wherein said second conveyor section comprises a power-driven conveyor belt having a substantially horizontal upper reach positioned below the level of said vacuum belt and extending transversely of the main conveyor line, said second conveyor belt being adapted to receive a core sheet from said first conveyor section and operable to move said core sheet transversely of said main conveyor line into a position in line with said main conveyor line, and said means for initiating movement of a core sheet in the direction of movement of the main conveyor line comprises a plurality of power-driven rollers adjacent said second conveyor belt rotatable under power about axes extending transversely of the main conveyor line, said rollers being mounted for shifting between a first position in which they are positioned for engaging a core sheet on the second conveyor belt and a second position out of engagement with a core sheet on the second conveyor belt.
Claim 8
Dependent Claim
67 words
The apparatus of claim 2, which further comprises face veneer sheet supply means intermediate the glue applicator and stacking support including a face veneer stack support for supporting a stack of face veneer sheets with said veneer sheets oriented as they are to be layed up in a panel, and a face veneer conveyor for moving a face veneer sheet from said stack toward said stacking support.
Claim 9
Dependent Claim
31 words
The apparatus of claim 7, which further comprises means for producing relative vertical shifting of said first conveyor section and said core sheet stack support toward and away from each other.
Claim 10
Dependent Claim
22 words
The apparatus of claim 9, wherein said face veneer stack support and face veneer conveyor are superposed over said main conveyor line.
References Cited (Backward Citations)
US3616090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |