Process and apparatus for the manufacture of adjustable shoulder-straps for clothing
AssigneeLovable Industriale S.p.A.
InventorDario Bartolini
Life of this patent
Estimating the term…
Abstract
An apparatus for the manufacture of shoulder-straps including ribbon, ring and slider comprises a ribbon feeding unit, a slider supplying unit, a sealing unit for sealing the slider to the ribbon, a ribbon translation and turnover unit and an insertion unit for inserting the ribbon into the slider; preferably comprises a ring supplying and deforming unit and a means for ribbon spreading following insertion in the slider. According to the process, the ribbon is slipped into the intentionally deformed ring, sealed to the slider, bent over on itself and inserted into the slider by a punch; a further punch provides for stretching out the ribbon as left in the slider by the first punch.
Claims18
A process for manufacturing adjustable shoulder-straps comprising a ribbon length, a slidable ring and a slider attached to one end of the ribbon and on which the ribbon can slide with another portion thereof for adjusting the length of the shoulder-strap, said slider being of a type sealable or weldable to the ribbon and having resiliently deformable arms extended to one another to define ribbon sliding slots;
- said process comprising the steps of:
- threading the ribbon into said ring;
- sealing or welding one end of the ribbon onto said slider;
- threading an intermediate portion of the ribbon into said slider by a first punch, while temporarily deforming said arms;
- and removing said punch leaving said intermediate portion of the ribbon beyond said arms;
- wherein the step is provided of temporarily resiliently deforming said ring, to have a sufficient width for the passage of the substantially undeformed ribbon prior to threading the ribbon into the ring.
A process for manufacturing adjustable shoulder-straps comprising a ribbon length, a slidable ring and a slider attached to one end of the ribbon and on which the ribbon can slide with another portion thereof for adjustment in length of the shoulder-strap, said slider being of a type sealable or weldable to the ribbon and having resiliently deformable arms extended to one another to define ribbon sliding slots, said process comprising the steps of:
- threading the ribbon into said ring;
- sealing or welding one end of the ribbon onto said slider;
- threading an intermediate portion of the ribbon into said slider by a first punch, while deforming the arms;
- removing said punch leaving said intermediate portion of the ring beyond said arms;
- wherein subsequently to said step of threading an intermediate portion of the ribbon, the operation is provided of spreading the ribbon thus threaded astride the slider arms by a second punch advancing transversely of the ribbon, the ribbon being retained during said operation by spaced apart pliers.
An apparatus for the manufacture of adjustable shoulder-straps, comprising a ribbon length, partly folded up as a loop, a slidable element retained in said loop, a slider welded to one end of the ribbon and slidably engaged on an intermediate portion of the ribbon, so as to close said loop, wherein there are provided:
- a ribbon feeding unit;
- a slider supply unit;
- a sealing or welding unit for sealing or welding the slider to the ribbon;
- a ribbon translation and turnover unit;
- and an insertion unit for inserting the ribbon into the slider, said ribbon translation and turnover unit comprising first and second translatable pliers, both of which have extension and retraction movement imparted thereto transversely of the ribbon extent, said first pliers being also rotatable about an axis parallel to the direction of extension and retraction of said first pliers.
Dependencies are inferred from the claim text.