US 4,703,634 AGranted

Leather product edging machine

OwnerJang M. Shyuinventor

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Abstract

An edging machine for leather products, particularly for the flanging as well as edging of the vamp or quarter of leather shoes or leatherette shoes, incorporates a cam shaft on which there are provided a cam, curved wheels and further eccentric cams which facilitate the automatic operation of a claw that progressively moves the leather product for flanging by a flanging member. Thus, the edging of leather products is accomplished at an improved product quality level as well as a cut in product cost as compared with conventional procedures.

Claims4

Dependent claims

A leather product edging machine comprising:

a mounting surface, upon which said machine is mounted, and means defining a hole in said mounting surface;
a belt wheel connected to a rear end of a camshaft so as to rotate said camshaft by the rotation of said wheel;
a cylindrical cam fitted to the end of the camshaft closest to the belt wheel for controlling a guide means for restricting the feeding direction of a leather piece, an eccentric cam on the front end of the camshaft for transmitting the movement of said camshaft to a vertical press stem to cause a longitudinal linear movement of said vertical press stem and to cause a latitudinally extending double bending shaft extending forward of said eccentric cam to force a wrench bar connected to said double bending shaft to execute a reciprocating longitudinal movement;
said guide means comprising a standing stem positioned below said cylindrical cam provided at the belt wheel end of said camshaft, said standing stem passing through a central bore of a spring, said spring being positioned above said mounting surface, and said standing stem extending below and through said mounting surface;
a transverse guide stem having two ends, one end being connected to the bottom end of said standing stem and passing beneath said mounting surface;
said transverse guide stem being rotatable about a longitudinal axis and having, at the other end thereof, a radially extending means for alternately engaging and disengaging with said hole defined by said mounting board by the rotation of said transverse guide stem;
a flanging member connected at a lower portion of said vertical press stem;
a blade connected to said lower portion of said vertical press stem;
a horizontal slide bar, parallel to and below said camshaft;
a horizontally extending arm attached to an upper portion of said wrench bar and united to said horizontal slide bar;
a sheath wheel, having a curved groove therein, positioned on said camshaft between said cylindrical cam and said eccentric cam;
means connected to said horizontal slide bar and fitting in said curved groove for laterally displacing said horizontal slide bar and by said lateral displacement, rotating said wrench bar about its longitudinal axis in response to a rotating movement of said camshaft;
said wrench bar having a claw on its lower end, the rotation of said claw and radially extending means acting together to grip a leather object and to guide said leather object across a bending mound on said mounting board, said mount having a cliffed face over which an edge of said leather object is guided.

10 more elements

Dependencies are inferred from the claim text.

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Abstract

A leather product edging machine comprising:

a mounting surface, upon which said machine is mounted, and means defining a hole in said mounting surface;
a belt wheel connected to a rear end of a camshaft so as to rotate said camshaft by the rotation of said wheel;
a cylindrical cam fitted to the end of the camshaft closest to the belt wheel for controlling a guide means for restricting the feeding direction of a leather piece, an eccentric cam on the front end of the camshaft for transmitting the movement of said camshaft to a vertical press stem to cause a longitudinal linear movement of said vertical press stem and to cause a latitudinally extending double bending shaft extending forward of said eccentric cam to force a wrench bar connected to said double bending shaft to execute a reciprocating longitudinal movement;
said guide means comprising a standing stem positioned below said cylindrical cam provided at the belt wheel end of said camshaft, said standing stem passing through a central bore of a spring, said spring being positioned above said mounting surface, and said standing stem extending below and through said mounting surface;
a transverse guide stem having two ends, one end being connected to the bottom end of said standing stem and passing beneath said mounting surface;
said transverse guide stem being rotatable about a longitudinal axis and having, at the other end thereof, a radially extending means for alternately engaging and disengaging with said hole defined by said mounting board by the rotation of said transverse guide stem;
a flanging member connected at a lower portion of said vertical press stem;
a blade connected to said lower portion of said vertical press stem;
a horizontal slide bar, parallel to and below said camshaft;
a horizontally extending arm attached to an upper portion of said wrench bar and united to said horizontal slide bar;
a sheath wheel, having a curved groove therein, positioned on said camshaft between said cylindrical cam and said eccentric cam;
means connected to said horizontal slide bar and fitting in said curved groove for laterally displacing said horizontal slide bar and by said lateral displacement, rotating said wrench bar about its longitudinal axis in response to a rotating movement of said camshaft;
said wrench bar having a claw on its lower end, the rotation of said claw and radially extending means acting together to grip a leather object and to guide said leather object across a bending mound on said mounting board, said mount having a cliffed face over which an edge of said leather object is guided.

10 more elements