ES1052369U - Apparatus for stretching uppers roads in their lasts. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Apparatus for the stretching of shod plates in their lasts, characterized by the fact of having: a tape feeder (1), provided for the advancement of a set-last (m), constituted by a high-speed walkway in his last; a control and command control unit (c) having a series of information stored relative to the speed advance of said last-set (m); a first station (s1), placed on the upper part of the feeder (1), which includes a first hood (2), to which are associated: heating means provided in the first bell (2), so as to act on the set-last (m) with a flow of hot air to enable the skin to soften favoring its relaxation in the last; means for creating a depression, internally to the first bell (2), to increase the porosity of the skin, that is to determine the dilation of the pores of the skin, to favor a great elimination of air in the pores of the latter; means for the inmission of aqueous vapor, provided in said bell (2), capable, after a predetermined time of generating the depression and of increasing the percentage of humidity internally to said first bell (2), and consequently increasing the percentage of humidity present in the skin of the upper part, with said means appropriately controlled by the command and control unit (c); a second station (s2), located in the upper part of the feeder (1), in cascade with respect to the first station, constituted by a second drying chamber (5) provided with heating and ventilation means (6), appropriately controlled by the aforementioned central unit (c), to define at least a partial elimination of water vapor from the upper skin. (Machine-translation by Google Translate, not legally binding)