METHOD FOR MANUFACTURING PLASTIC ELEMENTS WITH CONVEX CONTOUR OF A GIVEN SHAPE Russian patent published in 2023 - IPC B29C51/08 B29C59/02 

FIELD: thermoplastics.

SUBSTANCE: invention relates to a technique for processing sheet blanks from thermoplastics, namely, to a method for moulding sheet plastic made on the basis of acrylonitrile-butadiene-styrene, or acrylic, or polyester, or polystyrene, or PVC, and can be used in any branch of mechanical engineering, in in particular, for the production of instrument housings (including radars), decorative and protective elements of a convex shape with radius bends and other means. A method has been proposed for the manufacture of plastic elements with a convex contour of a given shape, including placing a sheet of plastic on the surface of a heat-resistant material with low adhesion, heating, giving shape using a forming element, inertial cooling and removing the manufactured element from the forming element, while the heat-resistant material is placed on a flat surface , a forming element is installed above the plastic sheet, which is made in the form of a form-building mandrel of a given shape, completely corresponding to the inner surface of the element being manufactured, and such that the mandrel does not exert pressure on the plastic sheet, and the formation is carried out by wrapping the heated plastic sheet and then fixing it around the forming mandrel using heat-resistant material and clamping devices. The method ensures the production of finished parts from sheets of plastic with a precisely specified surface contour and without changing the thickness of the plastic over the entire surface of the finished part.

EFFECT: expansion of functionality.

2 cl, 7 dwg