Device, useful for indirectly and inductively heating workpiece e.g. metal sheet, comprises inductively heatable contact element, inductor, and electrically non-conductive supporting unit attached to inductor using non-ferromagnetic nut

摘要

The device comprises an inductively heatable contact element, which has a workpiece to be heated having a heating surface, an inductor (11) arranged on the heating surface of the contact element facing away from rear face such that the contact element is heated through the inductor, and an electrically non-conductive supporting unit attached to the inductor. The contact element is fixed with the supporting unit. The supporting unit is arranged and attached on a supporting side of the inductor facing away from the contact element using a non-ferromagnetic nut and a non-conductive threaded rod. The device comprises an inductively heatable contact element, which has a workpiece to be heated having a heating surface, an inductor (11) arranged on the heating surface of the contact element facing away from rear face such that the contact element is heated through the inductor, and an electrically non-conductive supporting unit attached to the inductor. The contact element is fixed with the supporting unit. The supporting unit is arranged and attached on a supporting side of the inductor facing away from the contact element using a non-ferromagnetic nut and a non-conductive threaded rod, and a non-metallic holding plate (15) such as a glass fiber-reinforced composite sheet. The non-metallic holding plate has a thickness greater than a thickness of the inductor. The supporting unit has a through hole through which extends the threaded rod. A non-conductive nut is screwed on the threaded rod and tightened against the supporting unit. The threaded rod is made of a plastic. The nut is screwed or fixed to the inductor. The supporting unit includes a support element with a support profile, which extends engages over the inductor and is held by the contact element. The support profile is fixed to the inductor facing away from the holding plate. A clamping element is arranged on the support profile. The contact element is clamped to the inductor by the clamping element. A spacer block is arranged on the supporting profile. The clamping element is fixed at the spacer block so that a spacing is defined on the supporting profile. The inductor comprises an induction coil (25) that defines an active surface (17). The active surface is provided complementary to the rear face and on the back surface. A spacer element (21) on the active surface is fixed to the rear surface of the contact element.