Title:
MANUFACTURING METHOD FOR FLOW CHANNEL DEVICE
Document Type and Number:
Japanese Patent JP2023076972
Kind Code:
A
Abstract:
To provide a manufacturing method for a flow channel device that prevents voids from occurring in a molten zone in ultrasonic welding of a flow channel end and that provides stable, high sealing quality.SOLUTION: The manufacturing method for the flow channel device includes the steps of: forming a widened portion 3b in a stepped shape at a sealing opening end 3a of a flow channel hole 3 drilled in a base material 1; inserting, from a tip side, a sealing member 2 having a frustum-shaped tapered portion 2c formed at a step between a thick column portion 2a and a thin column portion 2b, which are formed in a two-stage columnar shape against the sealing opening end until the tapered portion hits a step at the back of the widened portion of the sealing opening end, and applying ultrasonic vibration from an end face on a base end side of the thick column portion of the sealing member, pushing the sealing member into the flow channel hole of the base material for a predetermined distance and welding it while melting a contact portion between the sealing member and the base material.SELECTED DRAWING: Figure 2
Inventors:
FUKUDA MASARU
TSUTSUMI RYOSUKE
TSUTSUMI RYOSUKE
Application Number:
JP2021190028A
Publication Date:
June 05, 2023
Filing Date:
November 24, 2021
Export Citation:
Assignee:
YOHWA CO LTD
International Classes:
B29C65/08; B29C69/00; B81C3/00; B81C99/00
Attorney, Agent or Firm:
Kazuto Ishida