| 摘要 |
The present invention relates to a chuck for clamping a glass tube, and more particularly, to a chuck for clamping a glass tube, which is used in a blowing machine for manufacturing a glass bottle, an ampule, an electric bulb or the like by blowing air in a glass tube having a predetermined length and both ends formed into a flare portion and a dome portion, respectively. The chuck for clamping a glass tube according to the present invention comprises a housing; a clamping means that is installed on the housing to be rotatable about a predetermined axis, is formed with a through-hole with a predetermined diameter along the predetermined axis, and has a gasping portion for clamping an upper end of the glass tube below the through-hole such that a central axis of the glass tube is substantially aligned with the predetermined axis; a power transmitting means installed in the housing to transmit power for rotating the clamping means; and a clutch for receiving the power from the power transmitting means and transmitting the received power to the clamping means, whereby when external force exceeding a predetermined value is applied to the clamping means, the gasping portion of the clamping means is outstretched to clamp the upper end of the glass tube or release a clamped glass tube and the clutch cuts off the power transmitted to the clamping means. |
