| 摘要 |
PURPOSE:To deform a heat resistant sheet and to remove sticked spatter and dust by their peeling off by providing the dust collecting pipe opened to the work chuter upper part of a work working part and providing the heat resistant sheet freely deformable by air pressure on the inner wall thereof. CONSTITUTION:A freely deformable heat resistant sheet 55 is fitted by a machine screw 57 to the periphery of the inner wall 53 of the dust collecting pipe 9 which is drooped to the lower face of the working part base seat 11 provided with on a work chuter. Moreover, the flowing passage 61 leading in a compressed air is plurally provided on the part of the frame 59 of the dust collecting pipe 9 to communicate the respective flowing passage 61. Also, the hole 63 communicating the flowing passage 61 and inner wall 53 is plurally provided. Since the spatter, dust, etc., generated at working time are grown by sticking to the heat resistant sheet 55 provided on the inner wall of the dust collecting pipe 9, the sticked spatter, dust, etc., are removed by their peeling off by deforming the heat resistant sheet 55 by feeding a compressed air periodically, the clogging of the dust collecting pipe 9 is prevented and the productivity is improved without the need for hands. |
