发明名称 |
LOG CONDITIONING BEFORE MECHANICAL DEBARKING |
摘要 |
High powered lasers are used to score the bark (28) on logs (26) before they are mechanically debarked. Typical of the lasers employed are multi-kilowatt CO2 industrial lasers. A high powered laser beam (20) is brought to a focus just above the surface of the bark (28) on the log (26). A jet of compressed air is blown co-axially with the beam and facilitates the beam's formation of a narrow slot in the surface of the bark. Logs are advanced and rotated by a plurality of parallel augers (42) extending across the base of a trough (40). The lasers are positioned in a gap beneath and in between sets of augers. The beam's focus may be adjustable with respect to the bark's surface. The motion of the log with respect to a laser head produces a spiral cut along the surface of the log which slices the long fibers in the bark. |
申请公布号 |
WO9618481(A2) |
申请公布日期 |
1996.06.20 |
申请号 |
WO1995US16970 |
申请日期 |
1995.12.12 |
申请人 |
BELOIT TECHNOLOGIES, INC. |
发明人 |
THOMA, EDUARD, JOSEF |
分类号 |
B23K26/08;B23K26/40;B27L1/00;B27M1/06 |
主分类号 |
B23K26/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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