| 摘要 |
PURPOSE: A needle device is provided to make the end of a rotary cap do linear reciprocating motion at a constant speed when the rotary cap rotates. CONSTITUTION: A needle device comprises a linear movement changing unit, a linear reciprocating movement unit, a needle fixing unit, and a needle(250). One end of the linear movement changing unit is connected to a rotary shaft of a motor and changes the rotational motion of a motor into a linear reciprocating motion. In the other end of the linear movement changing unit, a first hole is formed in a screw thread shape. In the end of the first hole, a second hole is formed. In one end of the linear reciprocating movement unit, a protrusion is formed and is combined with a second hole of the linear movement changing unit. The linear reciprocating movement unit reciprocates in a linear direction. The needle fixing unit is combined with the other end of the linear reciprocating movement unit. The needle is combined with the inside of the needle fixing unit. |
