Title:
MACHINE FOR AUTOMATICALLY MANUFACTURING WELDED GRID BEAM
Document Type and Number:
Japanese Patent JPS5684140
Kind Code:
A
Abstract:
A lattice girder making machine has a stepwise feed mechanism for upper and lower chord wires; and a continuously operating bending mechanism for bending wire into zigzag strutting which is welded to the chord wires at a welding station. Between the bending mechanism ad the welding station the zigzag strutting slides along guides which allow the strutting alternately to contract resiliently and then to expand to accommodate the stepwise advance through the welding station. At the welding station the strutting is held at the required extension by fingers.
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Inventors:
GERUHARUTO SHIYUMITSUTO
KURAUSU RITSUTAA
GERUHARUTO RITSUTAA
YOOZEFU RITSUTAA
KURAUSU RITSUTAA
GERUHARUTO RITSUTAA
YOOZEFU RITSUTAA
Application Number:
JP10648280A
Publication Date:
July 09, 1981
Filing Date:
August 04, 1980
Export Citation:
Assignee:
EVG ENTWICKLUNG VERWERT GES
International Classes:
B21F31/00; B21F27/20; B23K11/00; (IPC1-7): B21F27/10; B21F27/12
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