Machines for forming spaghetti from vegetable products

A machine for forming “spaghetti” from vegetable products (19) comprising:

• a cutting unit (11) rotatable about an operating axis (A) and having a face (12), perpendicular to said operating axis (A), from which protrude blades for forming “spaghetti” from a product (19), that is pushed against said face (12);
• and
• a supply device (14) comprising a thrust unit (15) having:
• two tape members (16, 17) mutually opposing each other and define passage (18) between them for products (19);
• said tape members (16, 17) being positioned and configured such that said passage (18) extends along said operating axis (A) and has an outlet opening (18a) which faces the face (12) of said cutting unit (11);
• said tape members (16, 17) being spreadable in a way symmetrical with respect to said operating axis (A);
• elastic means (20) connected to said tape members (16, 17) and configured to resiliently counteract a mutual spreading of said tape members (16, 17);
• a fixed frame (23) to which said tape members (16, 17) are pivoted in a rotatable way, each with respect to its own axis of tilting (C, D) which lies on a plane perpendicular to said operating axis (A);
• said axes of tilting (C, D) being mutually parallel;
• and
• a guide device (35) which mutually interconnects said tape members (16, 17) and is configured to guide them between two configurations, a closing and an opening in which said tape members (16, 17) have a minimum divarication and a maximum divarication respectively;
• said guide device (35) being configured to maintain said tape members (16, 17) in mutually symmetrical position with respect to said operating axis (A), to guide a product (19) coaxially to said operating axis (A),
• wherein said guide device (35) includes a guide mechanism (36, 37) comprising four connecting rods (38a, 38b, 38c, 38d) and four pins (39a, 39b, 39c, 39d) arranged to form a quadrilateral whose sides are defined by said connecting rods (38a, 38b, 38c, 38d);
• said pins (39a, 39b, 39c, 39d) are placed at the vertices of said quadrilateral, which connect in a mutually rotating way, two of said connecting rods (38a, 38b, 38c, 38d);
• said fixed frame (23) being provided with two rectilinear guides (40a, 40b), parallel to said operating axis (A), and two curvilinear guides (41a, 41b) each extending circumferentially to one of said axes of tilting (C, D);
• said pins (39a, 39b, 39c, 39d) comprising:
• two first pins (39a, 39b) defining opposite vertices of said quadrilateral, each of which is coupled to one of said rectilinear guides (40a, 40b) to slide parallel to said operating axis (A);
• and
• two second pins (39c, 39d) defining opposite vertices of said quadrilateral, each of which is coupled to one of said curvilinear guides (41a, 41b) to slide along these circumferentially to said axes of tilting (C, D);
• each of said second pins (39c, 39d) being fixed to one of said tape members (16, 17) to guide it.