A circular knitting machine for knitted or hosiery items includes a supporting structure; a needle-holding cylinder rotatable around an axis of rotation and supporting a plurality of cylinder needles that are movable for producing a knitted fabric; a dial assembly, arranged above the cylinder and comprising a needle-holding plate rotating around the axis of rotation and supporting a plurality of plate needles that are movable for producing a knitted fabric. The machine includes motion generation elements, in order to rotate the needle-holding cylinder around the axis of rotation, and motion transmission elements configured for forming a motion transmission chain capable of transmitting to the plate, synchronously with respect to the cylinder, the rotation generated by the motion generation elements. The motion transmission elements include a first toothed wheel, receiving the rotary motion of the motion generation elements; a second toothed wheel, mounted coaxially with the needle-holding plate; an offset device, located between the first and the second toothed wheel and comprising an inlet gear, engaged with the first toothed wheel, and an outlet gear, engaged with the second toothed wheel. The inlet and outlet gears are mounted coaxially with one another and are translatable by an actuator, so as to change the engagement of the inlet gear with the first toothed wheel and/or the engagement of the outlet gear with the second toothed wheel.

A circular knitting machine for knitted or hosiery items includes a supporting structure; a needle-holding cylinder rotatable around an axis of rotation and supporting a plurality of cylinder needles that are movable for producing a knitted fabric; a dial assembly, arranged above the cylinder and comprising a needle-holding plate rotating around the axis of rotation and supporting a plurality of plate needles that are movable for producing a knitted fabric. The machine includes motion generation elements, in order to rotate the needle-holding cylinder around the axis of rotation, and motion transmission elements configured for forming a motion transmission chain capable of transmitting to the plate, synchronously with respect to the cylinder, the rotation generated by the motion generation elements. The motion transmission elements include a first toothed wheel, receiving the rotary motion of the motion generation elements; a second toothed wheel, mounted coaxially with the needle-holding plate; an offset device, located between the first and the second toothed wheel and comprising an inlet gear, engaged with the first toothed wheel, and an outlet gear, engaged with the second toothed wheel. The inlet and outlet gears are mounted coaxially with one another and are translatable by an actuator, so as to change the engagement of the inlet gear with the first toothed wheel and/or the engagement of the outlet gear with the second toothed wheel.

A circular machine for knitting, hosiery or the like, with sinker actuation device, comprising a needle cylinder; the needle cylinder has, on its lateral surface, a plurality of axial grooves, each of which accommodates a needle that can move on command along the corresponding axial groove in order to pick up at least one yarn dispensed at at least one feed or drop and form knitting; the machine also comprises needle actuation cams, which face the lateral surface of the needle cylinder and define paths that are extended around the axis of the needle cylinder and can be engaged by at least one heel of the needles, which protrudes from the lateral surface of the needle cylinder, in order to actuate the movement of the needles along the corresponding axial groove with respect to the needle cylinder as a consequence of the rotation of the needle cylinder about its own axis with respect to the needle actuation cams and the at least one feed.

A drive mechanism for driving a plurality of components arranged in a ring shape to move back and forth in a radial direction, the drive mechanism is disposed in an annular disk, each component has a shoulder, the drive mechanism includes: a circular body coaxial disposed on the annular disk; a drive wheel rotatably disposed coaxially with the circular body; a cam ring disposed coaxially with the drive wheel, having a diameter smaller than that of the drive wheel, and including at least one cam; a plurality of pushing elements provided for contacting the shoulder of the respective components and each having a driven portion abutted against the cam ring, so that the pushing elements are moved toward or away from the axis, and the pushing elements contact the shoulders to drive the components to move in the radial direction or in the direction of the axis.

A drive mechanism for driving a plurality of components arranged in a ring shape to move back and forth in a radial direction, the drive mechanism is disposed in an annular disk, each component has a shoulder, the drive mechanism includes: a circular body coaxial disposed on the annular disk; a drive wheel rotatably disposed coaxially with the circular body; a cam ring disposed coaxially with the drive wheel, having a diameter smaller than that of the drive wheel, and including at least one cam; a plurality of pushing elements provided for contacting the shoulder of the respective components and each having a driven portion abutted against the cam ring, so that the pushing elements are moved toward or away from the axis, and the pushing elements contact the shoulders to drive the components to move in the radial direction or in the direction of the axis.

A circular knitting machine for knitted or hosiery items includes a supporting structure; a needle-holding cylinder rotatable around an axis of rotation and supporting a plurality of cylinder needles that are movable for producing a knitted fabric; a dial assembly, arranged above the cylinder and comprising a needle-holding plate rotating around the axis of rotation and supporting a plurality of plate needles that are movable for producing a knitted fabric. The machine includes motion generation elements, in order to rotate the needle-holding cylinder around the axis of rotation, and motion transmission elements configured for forming a motion transmission chain capable of transmitting to the plate, synchronously with respect to the cylinder, the rotation generated by the motion generation elements. The motion transmission elements include a first toothed wheel, receiving the rotary motion of the motion generation elements; a second toothed wheel, mounted coaxially with the needle-holding plate; an offset device, located between the first and the second toothed wheel and comprising an inlet gear, engaged with the first toothed wheel, and an outlet gear, engaged with the second toothed wheel. The inlet and outlet gears are mounted coaxially with one another and are translatable by an actuator, so as to change the engagement of the inlet gear with the first toothed wheel and/or the engagement of the outlet gear with the second toothed wheel.

A circular knitting machine for knitted or hosiery items includes a supporting structure; a needle-holding cylinder rotatable around an axis of rotation and supporting a plurality of cylinder needles that are movable for producing a knitted fabric; a dial assembly, arranged above the cylinder and comprising a needle-holding plate rotating around the axis of rotation and supporting a plurality of plate needles that are movable for producing a knitted fabric. The machine includes motion generation elements, in order to rotate the needle-holding cylinder around the axis of rotation, and motion transmission elements configured for forming a motion transmission chain capable of transmitting to the plate, synchronously with respect to the cylinder, the rotation generated by the motion generation elements. The motion transmission elements include a first toothed wheel, receiving the rotary motion of the motion generation elements; a second toothed wheel, mounted coaxially with the needle-holding plate; an offset device, located between the first and the second toothed wheel and comprising an inlet gear, engaged with the first toothed wheel, and an outlet gear, engaged with the second toothed wheel. The inlet and outlet gears are mounted coaxially with one another and are translatable by an actuator, so as to change the engagement of the inlet gear with the first toothed wheel and/or the engagement of the outlet gear with the second toothed wheel.

A drive chain for stitch formation members of a circular knitting machine includes an element coupled or to be coupled with a stitch formation member, and an oscillating lever connected to said element on a junction area. The oscillating lever is configured for interacting with selecting devices so as to oscillate with respect to said element. The element comprises a first portion carrying a first butt and a second portion configured for slidingly coupling with a bottom of a respective groove. The first portion is elastically coupled with the second portion so as to keep the first butt in an operating position in which the first butt protrudes from the groove and to allow the first butt to get back into the groove in case of interference with one of the first actuating cams.

A drive chain for stitch formation members of a circular knitting machine includes an element coupled or to be coupled with a stitch formation member, and an oscillating lever connected to said element on a junction area. The oscillating lever is configured for interacting with selecting devices so as to oscillate with respect to said element. The element comprises a first portion carrying a first butt and a second portion configured for slidingly coupling with a bottom of a respective groove. The first portion is elastically coupled with the second portion so as to keep the first butt in an operating position in which the first butt protrudes from the groove and to allow the first butt to get back into the groove in case of interference with one of the first actuating cams.

A drive chain for stitch formation members of a circular knitting machine includes an element coupled or to be coupled with a stitch formation member and an oscillating lever connected to said element on a junction area. The oscillating lever is configured for interacting with selecting devices so as to oscillate with respect to said element. The element comprises a first portion carrying a first butt and a second portion configured for slidingly coupling with a bottom of a respective groove. Along a main direction of development of the drive chain, the junction area is placed between the stitch formation member and the first butt.