公开(公告)号：WO2003028981A1

公开(公告)日：2003-04-10

申请号：PCT/US2002/030107

申请日：2002-09-23

Applicant: PILOT INDUSTRIES, INC. ,  RIGGS, Richard, H. ,  GABBEY, David, John ,  MARION, Patrick, L.

Inventor： RIGGS, Richard, H. ,  GABBEY, David, John ,  MARION, Patrick, L.

IPC: B29C53/08

CPC classification number: B29C33/56 ,  B29C35/00 ,  B29C53/083 ,  B29C53/84 ,  B29K2101/12

Abstract: An apparatus is disclosed for thermosetting thermoplastic tubes (20) in a predefined shape having at least one bend. The apparatus includes an oven (10) with an interior chamber (12) which is heated to a temperature approaching that at which the tube thermally deforms. An elongated former (22) has a channel (23) dimensioned to receive the tube, and this channel has the predefined shape. A thermally absorbent coating (30) is disposed only on a surface of the former adjacent to and extending across each bend (24) of the former. This thermally absorbent coating locally adds the thermal energy required to reset the memory of the tube at the bend location. A conveyor (21) extends through the oven chamber from an inlet end and to an outlet end of the oven, and the former is attached to the conveyor.

Abstract translation: 公开了一种具有至少一个弯曲部的预定形状的热固性热塑性管（20）的装置。 该设备包括具有内部室（12）的烘箱（10），其被加热到接近管子热变形的温度。 细长的成形器（22）具有用于容纳管的尺寸的通道（23），并且该通道具有预定的形状。 吸热性涂层（30）仅在前者的表面上设置，邻近并延伸穿过前者的每个弯曲部（24）。 这种吸热涂层局部地增加了在弯曲位置复位管的存储器所需的热能。 输送机（21）从烘箱的入口端和出口端延伸穿过烘箱室，并且前者连接到输送机。