| 摘要 |
A manufacturing method of a jack terminal for connection of an electronic device is provided to automatize all processes except thread processing by a molding process including multi-stages, thereby improving speed and accuracy of manufacture, increasing plating effect by forming a through-hole through which air is input/output, and preventing rotation by increasing the associative property with connector by a molding mark. An iron wire member is cut by the required size(S10). The iron wire member is fixed on the first fixing mold. The iron wire member is pressurized to the first moving mold so that a body member integrally with a thread processing rod is formed(S20). The second moving mold is pressurized so that a pin inserting hole is formed on the body member(S30). The body member in which the pin inserting hole is formed is fixed to the second fixing mold. Inner and outer circumferences of the body member pressurized by the third moving mold are precisely processed. And a mold mark in which concavo-convex is formed and a protrusion uniformly and radially expanded are formed and a pin insertion pipe is simultaneously formed(S40). The body member in which a pin insertion pipe is molded is fixed to the third fixing mold. And a through-hole is formed through the pin insertion pipe by the fourth moving mold(S50). A thread is formed on the thread processing rod of the body member. And the body member is plated.
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