Patent ID: 7484950
Filing Date: 2009-02-03
Classification: B29C

Abstract:
1. A forming phase alignment device, comprising: a first forming roll; a second forming roll configured to form a double-surface formed sheet together with the first forming roll, the second forming roll being provided parallel and opposite to the first forming roll; a phase adjusting unit configured to move the second forming roll in an axial direction of the second forming roll; an upper formed-shape detector configured to detect a formed shape of a front surface of the double-surface formed sheet; a lower formed-shape detector configured to detect a formed shape of a back surface of the double-surface formed sheet; a front/back-surface phase difference arithmetic operation unit configured to compare a detection signal of the upper formed-shape detector and a detection signal of the lower formed-shape detector with each other, calculate a forming phase difference between the formed shape of the front surface of the double-surface formed sheet and the formed shape of the back surface of the double-surface formed sheet with respect to the axial direction, and output a phase difference value signal indicating the forming phase difference; and a phase alignment control processing unit configured to receive the phase difference value signal, and output an instruction to the phase adjusting unit so that the forming phase difference can be reduced.