23-04-2020 дата публикации
Номер: WO2020080662A1
Принадлежит:
The present invention relates to a method for manufacturing raised pavement markers by performing a drawing operation with a high-pressure power press, the method comprising the steps of: (a) cutting a metal plate having a predetermined thickness into a first plate member and a second plate member having predetermined areas by using a cutter; (b) placing the first plate member on a mold having the shape of the surface of the upper end of a raised pavement marker body, pressurizing same with a press, and drawing same; (c) cutting the peripheral portion of the drawn first plate member by using the cutter so as to form multiple grooves and edges at predetermined intervals in predetermined shapes; (d) forming an insertion hole in the center portion of the first plate member that has been cut, into which a reflective member is to be inserted, by piercing same such that coupling pieces are left on both sides of the insertion hole, respectively; (e) pressurizing the peripheral portion and the ...
Подробнее