Method and system for sequencing veneer to lumbercore

Patent metadata

Field	Value
Publication number	US-11370144-B2
Application number	US-201916596493-A
Country	US
Kind code	B2
Filing date	Oct 8, 2019
Priority date	Oct 8, 2019
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

A method for sequencing veneer to lumbercore includes receiving a veneer grain width input and a veneer thickness input, determining a cut angle based on the veneer grain width input and the veneer thickness input, receiving a lumbercore width input and a lumbercore height input, determining a set of dimensions for a stack of lumber, and generating a template mapping the lumbercore to the stack of lumber, where the template is based on the lumbercore width input, the lumbercore height input, and the set of dimensions for the stack of lumber, where the lumbercore is rotated within the template at an angle relative to horizontal within the stack of lumber by an amount equal to the cut angle.

First claim

What is claimed:

1. A method for forming a lumbercore from a plurality of sheets of veneer, the plurality of sheets of veneer producing an artificial grain pattern within the lumbercore, comprising:
receiving a veneer grain width input, a veneer thickness input, a lumbercore width input and a lumbercore height input;
forming a stack of lumber from the plurality of sheets of veneer comprising;
sequencing the plurality of sheets of veneer based on at least one of the veneer grain width input, the veneer thickness input, the lumbercore width input, or the lumbercore height input; and
applying an adhesive between adjacent sheets of the plurality of sheets of veneer;

generating at least one of a physical template or a digital template, wherein the at least one of the physical template or the digital template maps the lumbercore to the stack of lumber, the at least one of the physical template or the digital template being based on the lumbercore width input, the lumbercore height input, and the set of dimensions for the stack of lumber, the at least one of the physical template or the digital template including the cut angle;
applying the at least one of the physical template or the digital template to the stack of lumber, and
cutting the lumbercore from the stack of lumber at the cut angle included in the at least one of the physical template or the digital template.

2. The method of claim 1 , wherein the veneer grain width is maintained through sequential parallel cuts through the entirety of the lumbercore.

3. The method of claim 1 , the set of dimensions for the stack of lumber including a stack width, a stack height, and a number of sheets of veneer for the plurality of sheets of veneer,
the plurality of sheets of veneer each having a select thickness.

4. The method of claim 3 , further comprising obtaining a reference sheet of veneer, the select thickness of a sheet of veneer within the plurality of sheets of veneer being approximately equal to a thickness of a veneer grain width within the reference sheet of veneer.

5. The method of claim 3 , the dimensions of the lumbercore being defined within the set of dimensions of the stack of lumber, with the lumbercore width input being less than the stack width of the stack of lumber and the lumbercore height input being less than the stack height of the stack of lumber.

6. The method of claim 1 , the adhesive comprising a clear epoxy resin.

7. The method of claim 1 , the forming the stack of lumber from the plurality of sheets of veneer further comprising:
firetreating the plurality of sheets of veneer prior to applying the adhesive between the adjacent sheets of the plurality of sheets of veneer.

8. The method of claim 1 , the physical template being applied to an end surface of the stack of lumber.

9. The method of claim 1 , the physical template or the digital template further including an inside block representing the lumbercore, the inside block rotated relative to horizontal an amount equal to the cut angle within an outside block, the outside block representing the stack of lumber.

10. The method of claim 9 , the lumbercore including a portion of the plurality of sheets of veneer after the lumbercore is cut from the stack of lumber, the portion of the plurality of sheets of veneer being set relative to horizontal at the cut angle through the end surface of the lumbercore.

11. The method of claim 4 , the reference sheet of veneer and a top surface of the lumbercore having at least one of a matching color, grain width, or grain pattern.

12. The method of claim 11 , the top surface of the lumbercore including a plurality of edges of the portion of the plurality of sheets of veneer, at least one of the matching color, grain width, or grain pattern being visible across the plurality of edges of the plurality of sheets of veneer after the lumbercore is cut from the stack of lumber.

Assignees

• Goodrich Corp

Inventors

• Hall Benjamin D
• Knauer Charles A
• Chapman Christopher L
• White John R
• Barnett Brian K
• Copelin Freddy R
• Funk Tim L

Classifications

• B27D1/04

  to produce plywood or articles made therefrom; Plywood sheets {(making a layered veneer cutting block B27L5/00)} · CPC title

• B27D1/06 Primary

  Manufacture of central layers; Form of central layers {(see also B27M3/002 and B27M3/0026)} · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B27D1/00 Primary

  Joining wood veneer with any material; Forming articles thereby (in conjunction with moulding of wood particles or fibres B27N3/06); Preparatory processing of surfaces to be joined, e.g. scoring · CPC title

• B32B3/263

  characterised by a layer having non-uniform thickness · CPC title