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Document Type and Number:
Japanese Patent JP6827003
Kind Code:
PROBLEM TO BE SOLVED: To provide a method for controlling an outer diameter and an inner diameter of a pipe-like metal tube having a hollow structure such as a tubule when pulling out the metal tube.SOLUTION: A pull-out machine 100 comprising: a first pull-out unit 40-1 having a first drawing die 42-1, a first front stage capstan 48-1 which is provided on a front stage of the first drawing die and sends out the metal tube 10 to the first drawing die, and a first rear stage capstan 50-1 which is provided on a rear stage of the first drawing die, and draws the metal tube from the first drawing die; a second pull-out unit 40-2 having a second drawing die 42-2 which draws the metal tube sent out from the first pull-out unit 40-1 and has a same function as first drawing, a second front stage capstan 48-2, and a second rear stage capstan 50-2; and a tensile force application part 52 which applies a prescribed tensile force to the metal tube between the first pull-out unit and the second pull-out unit.SELECTED DRAWING: Figure 1

Kosuke Takemoto
Kenichi Tajima
Application Number:
Publication Date:
February 10, 2021
Filing Date:
January 29, 2018
Export Citation:
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FA Electronics Co., Ltd.
International Classes:
B21C1/12; B21C1/22
Domestic Patent References:
Foreign References:
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito