EP 2353811 A1 20110810 - Method and apparatus for dividing a log into pieces of lumber
Title (en)
Method and apparatus for dividing a log into pieces of lumber
Title (de)
Verfahren und Vorrichtung zum Zerteilen eines Baumstammes in Holzteile
Title (fr)
Procédé et dispositif pour diviser un tronc en pièces de bois
Publication
Application
Priority
FI 20105090 A 20100202
Abstract (en)
The invention relates to a method for working a log and dividing the same into pieces of lumber. The method comprises feeding (101) a log onto a processing line (201) and advancing it through the following process steps of: (a) measuring (102) a log three-dimensionally, thereby finding out its geometrical shape; (b) storing (103) the log measurement data, the log treatment being conducted on the basis of said measurement data; (c) checking the position of a log (T) and rotating (104) the log, such that a possible skewness points upwards; (d) trimming (105) first two vertical sides on the log at its opposite sides and the log is thereby turned into a first balk having first and second vertical sides. According to the invention, the method further comprises: (e) milling (106) first and second grooves in top and bottom parts of each vertical side of the first balk, each of said grooves having one of its groove flanks adjacent to a vertical side of the balk, said grooves being used for defining at least first and second side slabs on the balk's trimmed sides; (f) removing (107) the side slabs, most preferably by sawing, from the first balk's vertical sides; followed by (g) separating (108) a remaining segment of the first balk, i.e. a second balk, and the removed side slabs from each other and advancing the second balk to a further treatment (109). The invention relates also to an apparatus applying the method.
IPC 8 full level
B27B 1/00 (2006.01)
CPC (source: EP FI)
B27B 1/007 (2013.01 - EP FI)
Citation (applicant)
- FI 73905 B 19870831 - LINCK MASCHF & EISEN [DE]
- US 3742993 A 19730703 - MORTON D, et al
- FI 104316 B 19991231 - RAUTIO KAUKO JOHANNES [FI]
Citation (search report)
- [X] US 5421386 A 19950606 - LUNDSTROEM LARS-GUNNAR [SE]
- [XA] EP 0785052 A1 19970723 - RAUTIO KAUKO [FI]
- [A] US 4327789 A 19820504 - REUTER ALFRED
- [A] US 4879659 A 19891107 - BOWLIN WILLIAM P [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2353811 A1 20110810; FI 123149 B 20121130; FI 20105090 A0 20100202; FI 20105090 A 20110803
DOCDB simple family (application)
EP 11152961 A 20110201; FI 20105090 A 20100202