公开(公告)号：US20190247979A1

公开(公告)日：2019-08-15

申请号：US16318182

申请日：2017-02-16

Applicant: SINTOKOGIO, LTD.

Inventor： Mitugi UMEMURA

IPC: B24C3/08 ,  B24C1/10

CPC classification number: B24C3/083 ,  B24C1/10 ,  B24C3/32 ,  B24C9/00

Abstract: First guide pipes are disposed on both sides of blasting areas, and second guide pipes are disposed on both sides of the blasting area. A wire rod W is inserted through the first guide pipes and the second guide pipes, penetrating in a conveying direction of the wire rod W. The diameter of each of first insertion holes of the first guide pipes and second insertion holes of the second guide pipes is gradually reduced toward the downstream side in the conveying direction. The second guide pipe is installed in a state in which the downstream-side end portion in the conveying direction is inserted into the first insertion hole from the inlet side of the first guide pipe.