Automatic machine for zig-zag stitching of tubular elements
OwnerMario Ciucaniinventor
Life of this patent
Estimating the term…
Abstract
An automatic machine for zig-zag stitching of tubular elements, in particular for stitching trimmings on mocassin type footwear and for fixing transversal reinforcing bands to the vamp of the footwear, where the cylinder containing the "crochet" is circular-sectioned and the work plane on which to lay the material to be stitched is curved with its curve center on the axis of the cylinder and the work plane is supported by a collar co-axial with and external to the cylinder, and longitudinally mobile and rotarily coaxial with respect to said cylinder. The machine also includes the pressure foot which grips the material to be stitched tautly to said work plane, the pressure foot being supported by a guide line fixed to said collar and arranged above the work plane.
Claims8
An automatic machine for zig-zag stitching of tubular elements, which machine is capable of stitching trimmings on mocassin type footwear and of fixing transversal reinforcing bands to the vamp of said footwear, said machine comprising a base support with a projecting head to support a needle and a machine cylinder which is positioned below the projecting head in which cylinder a "crochet" is located, with respect to which cylinder a work plane on which to lay the material to be machined and a pressure foot are mobile, wherein the pressure foot operates in contrast with said work plane to grip the material and move it under the needle in phase with the needle's movement;
- and where movements of said work plane and said pressure foot are controlled by one or more cams splined on a shaft rotated by the machine's motorization means, which cams activate operative devices inserted in the machine's feed circuit to operate the machine and which operative devices control movement devices which cause movement of said work plane and pressure foot;
- characterized by the fact that said cylinder is circular-sectioned and that said work plane is curved with its curve center being on the axis of the cylinder itself, said work plane being supported by a collar coaxial to the cylinder and longitudinally mobile with respect to the cylinder and rotatively coaxial with the cylinder, and that said pressure foot is supported by a guide line fixed to said collar and arranged above the work plane and extends smoothly with respect to said collar and said work plane in a radial direction from the cylinder.
An automatic machine for zig-zag stitching of tubular elements, which machine is capable of zig-zag stitching trimmings on mocassin-type footwear and capable of fixing transversal reinforcing bands to the vamp of said footwear, said machine comprising:
- a base support with a projecting head to support a needle;
- a machine cylinder positioned beneath the projecting head, and having a crochet located within, which crochet is capable of coacting with said needle to form stitches in the material being operated on by said machine;
- a work plane on which to lay said material being operated on and a pressure foot, both of which are moveable relative to said cylinder;
- where the pressure foot operates in conjunction with said work plane to grip said material and move said material under said needle in phase with the movement of said needle;
- means for moving said work plane and said pressure foot relative to said cylinder;
- one or more cam means splined on a shaft which is rotated by the machine's motorization means, wherein said one or more cam means are means for controlling the means for moving said work plane and said pressure foot relative to said cylinder.
Dependencies are inferred from the claim text.