| 摘要 |
An apparatus is described for machining on the face side a negative mold for a profile element ( 1 ) which is made of thermoplastic foamed material, forms the branch of a channel of a shaft floor and can be applied in an interlocking manner to a profile strand for the main channel, comprising a table ( 3 ) for receiving the profile element ( 1 ) to be machined and with a support ( 5 ) which is movable along a predetermined planar path for a curved heating wire ( 4 ) extending in one plane along the profile. In order to provide simple machining conditions it is proposed that the support ( 5 ) can be moved along a path corresponding to the axial progress of the profile strand for the main channel, that the heating wire ( 4 ) has a progress which corresponds to the contour of the profile strand for the main channel and that the support ( 5 ) which is held in a rotatable manner about an axis perpendicular to the plane of the path can be rotated within the terms of a permanent perpendicular orientation of the heating wire plane relative to the path of the support ( 5 ).
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