RESIN APPLICATION DEVICE ONTO INSIDE SURFACE OF METAL PIPE

To provide a resin application device onto an inside surface of a metal pipe capable of appropriately applying a resin for lubrication onto the inside surface of the metal pipe before performing cold drawing.SOLUTION: A resin application device 100 onto an inside surface includes a pole part 1 which is inserted to an inner part of a metal pipe P from the pipe end P2 side of the other side of the metal pipe and moves back and forth in a longitudinal direction of the metal pipe, a resin ejection nozzle 2 which is attached to a tip part of the pole part and ejects resin onto an inner surface of the metal pipe, a contact part 3 which is attached to the tip side of the resin ejection nozzle or is attached to the pole part on the rear end side of the resin ejection nozzle, has a size larger than an inside diameter of a mouth squeezed part P11 and smaller than an inside diameter of a straight part P13 and can be brought into contact with a taper part P12 and a contact detection part 4 which detects that the contact part is brought into contact with the taper part.SELECTED DRAWING: Figure 1 【課題】冷間抽伸加工を施す前の金属管の内面に潤滑用の樹脂を適切に塗布することが可能な金属管の内面樹脂塗布装置を提供する。【解決手段】本発明に係る内面樹脂塗布装置１００は、金属管Ｐの他方の管端Ｐ２側から金属管の内部に挿入され、金属管の長手方向に進退動する棹部１と、棹部の先端部に取り付けられ、金属管の内面に樹脂を吐出する樹脂吐出ノズル２と、樹脂吐出ノズルの先端側に取り付けられ、又は、樹脂吐出ノズルの後端側において棹部に取り付けられ、口絞り部Ｐ１１の内径よりも大きく、ストレート部Ｐ１３の内径よりも小さい寸法を有して、テーパ部Ｐ１２に接触可能な接触部３と、接触部がテーパ部に接触したことを検知する接触検知部４と、を備える。【選択図】図１