US 9,808,956 B2
Extension recycling method by the technology of bar embedment with glue for wood columns and apparatus thereof
Zhengjun Sun, Beijing (CN); Zhijia Liu, Beijing (CN); Yan Yan, Beijing (CN); Huanrong Liu, Beijing (CN); Weifeng Guo, Beijing (CN); Yujing Nie, Beijing (CN); and Xiubiao Zhang, Beijing (CN)
Assigned to INTERNATIONAL CENTER FOR BAMBOO AND RATTAN, Beijing (CN)
Filed by International Center for Bamboo and Rattan, Beijing (CN)
Filed on Sep. 30, 2013, as Appl. No. 14/41,673.
Claims priority of application No. 2012 1 0432523 (CN), filed on Nov. 2, 2012.
Prior Publication US 2014/0133902 A1, May 15, 2014
Int. Cl. B29C 65/00 (2006.01); B27M 3/00 (2006.01); B29C 65/48 (2006.01); B29C 65/56 (2006.01)
CPC B27M 3/002 (2013.01) [B29C 65/48 (2013.01); B29C 65/564 (2013.01); B29C 66/02241 (2013.01); B29C 66/72329 (2013.01); Y10T 156/12 (2015.01); Y10T 403/477 (2015.01)] 3 Claims
OG exemplary drawing
 
1. An extension recycling method by the technology of bar embedment with glue for wood columns, comprising,
(1) classification of short wood: classifying short wood according to a species hardness, explicitly recording an upper-end diameter, a lower-end diameter as well as a length of the short wood, and removing any short wood that have been mildewed, damaged by worms and bent;
(2) sawing of the short wood: horizontally cutting 2-20 mm from an upper end surface and a lower end surface of the short wood by using a circular saw, cross-sections thereof being horizontal planes;
(3) drying of the short wood: drying the short wood naturally or artificially until a moisture content of the short wood is reduced to 10%, a temperature for the artificial drying being 80° C.;
(4) assembling and sorting of the short wood: assembling and sorting the short wood, including connection in series of the short wood that connecting surfaces of two adjacent pieces have a same diameter or diameters with a difference less than 5%;
assembling in series multiple pieces of short wood of same species hardness; and
assembling in series multiple pieces of short wood of different species hardness, and using the short wood of a first species hardness as the short wood at a lower end of a manufactured strut while the short wood of a second species hardness as the short wood at an upper end of the manufactured strut, wherein the first species hardness is greater than the second species hardness;
(5) connection in series of the short wood under pressure: placing the assembled multiple pieces of short wood on rotating rollers of a connecting machine, gluing the connecting surfaces of two connected adjacent pieces of short wood, then placing the connecting members on the connecting surfaces of the two adjacent pieces of short wood and applying a pressure to two ends of the assembled pieces of short wood from left and right ends of the rotating rollers by using a press machine until the connecting surfaces of the two adjacent pieces of short wood fit with each other and two sides of the connecting members are fixedly inserted into the connecting surfaces of the two pieces of short wood;
(6) processing of the short wood: starting a short wood connection machine to allow a stand column formed by in series connecting the short wood to be processed to rotate coaxially, and planing the stand column formed by in series connecting the short wood to a designed diameter size by a horizontally sliding planer tool; and
(7) marking of the stand column: taking the stand column out from the short wood connection machine and marking information about its assembly, species, length and width on a side thereof, thus to form a stand column.