| 摘要 |
This invention is configured having a control mechanism which supports a preform 50 and controls the state of rotation of a support member 20 being moved through a heating region so as to control the orientation of the preform 50 with respect to heating devices, the control mechanism having a first magnetic pole member 122a arranged along at least a part of the heating region and a second magnetic pole member 24 fastened at a portion of the support member 20 being moved through the heating region facing the first magnetic pole member 122a, the support member 20 moved through the heating region being set to a rotation state determined by a relationship between the polarity of the first magnetic pole member 122a and the polarity of the second magnetic pole member 24. Due to this constitution, it is possible to provide a preform heating system which can easily make the preform move through the heating region while rotating without greatly sacrificing efficient heating and make the preform move through the heating region without causing rotation of the preform.
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