Patent ID: 11910886
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC A  B | IPC A  B

Claim 4:
5. The process for manufacturing a multi-layered sole directly on the upper according to claim 1, that uses a machine equipped with a plurality of moulds, mounted on a carousel (G), that rotates about a vertical axis (Y) and where there are three moulding stations (P1, P2, P3), in each of which there is one of the single moulds that is sequentially arranged, once suitably equipped, in front of injectors (I1, I2, I3), to progressively carry out the moulding, at the station (P1) of the “outsole” (S1), at the station (P2) of the “insole” (S2) and at the station (P3) of the “midsole” (S3), respectively, wherein said process provides the following steps:
at the first moulding station (P1), where the “outsole” (S1) is made, once the mould is placed in front of the injector (I1), from an open mould condition, the support with the disc thereof is lowered, the base is lifted and the two opposed side half-rings are closed, so as to create a cavity inside which the plastic material is injected, through the injector (I1) or by direct casting so as to form the “outsole” (S1);
at the second moulding station (P2), where the “insole” (S2) is made, by the rotation of the carousel (G) the mould is placed in front of the injector (I2) and, from the open mould condition, the support is lowered and rotated by 180°, so as to place the form related to the upper (T) in a lower position and the two opposed upper half-rings are closed so as to create a cavity inside which the plastic material is injected, through the injector (I2) so as to form the “insole” (S2);
at the third moulding station (P3), where the “midsole” (S3) is made, by the rotation of the carousel (G) the mould is placed in front of the injector (I3) and, from the open mould condition, the support and the form thereof related to the upper (T) and the “insole” (S2) are lowered, the base related to the “outsole” (S1) is lifted and the two opposed side half-rings are closed, so as to create a cavity inside which the plastic material is injected through the injector (I3), so as to form the “midsole” (S3), in order to complete the sole (S);
after hardening the injected plastic material, by the further rotation of the carousel (G), the mould is brought in front of an operator (M) and from the open mould condition the support is rotated by 180° so as to bring the upper (T) provided with the sole (S) upwards, so that it is easily accessible for the above-said operator (M), who removes a completed footwear (C) from the form and puts a new upper (T) on the above-said form.