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 command device (1) for a knitting machine, the device comprising a body (2) of the device configured for movably housing at least an actuator, at least a command organ (5) movably mounted and associated to the body (2) and destined to interact with one or more organs of a knitting machine, for example one or more needles of the knitting machine, and/or with one or more threads infeeding into the knitting machine, and at least an actuator, movably housed at least partially in the body (2) and destined to controlledly move the command organ (5). The device (1) further comprises a support frame (10), associated to the body (2) and configured so as to increase the structural solidity of the body (2).

A command device (1) for a knitting machine, the device comprising a body (2) of the device configured for movably housing at least an actuator, at least a command organ (5) movably mounted and associated to the body (2) and destined to interact with one or more organs of a knitting machine, for example one or more needles of the knitting machine, and/or with one or more threads infeeding into the knitting machine, and at least an actuator, movably housed at least partially in the body (2) and destined to controlledly move the command organ (5). The device (1) further comprises a support frame (10), associated to the body (2) and configured so as to increase the structural solidity of the body (2).

A mobile cam device (1) for commanding needles of a needle bed of a knitting machine, the device (1) comprising: at least a body (2) having at least an air inlet (3) destined to be connected to a source of compressed air, at least a first housing seating (4a) for movably housing at least a first actuator (5a) in the body (2), and having at least a first air pathway (6a) defined internally of the body (2) and connecting the at least an air inlet (3) with the first seating (4a) for moving the actuator by means of the compressed air, the device further comprises at least a first command cam (8a) movably mounted and associated to the body (2) and destined to interact with at least a needle of a needle bed of a knitting machine, and at least a first actuator (5a), movably housed at least partially in the first housing seating (4a) in the body (2) and destined to move in a controlled way the first command cam (8a). The device further comprises at least a first solenoid valve (9a) mounted and connected directly to the body (2) of the device and active directly at least on the first air pathway (6a), the first solenoid valve being configured and predisposed to selectively enable or prevent passage of air in the first air pathway (6a) such as to selectively activate the first actuator.

A mobile cam device (1) for commanding needles of a needle bed of a knitting machine, the device (1) comprising: at least a body (2) having at least an air inlet (3) destined to be connected to a source of compressed air, at least a first housing seating (4a) for movably housing at least a first actuator (5a) in the body (2), and having at least a first air pathway (6a) defined internally of the body (2) and connecting the at least an air inlet (3) with the first seating (4a) for moving the actuator by means of the compressed air, the device further comprises at least a first command cam (8a) movably mounted and associated to the body (2) and destined to interact with at least a needle of a needle bed of a knitting machine, and at least a first actuator (5a), movably housed at least partially in the first housing seating (4a) in the body (2) and destined to move in a controlled way the first command cam (8a). The device further comprises at least a first solenoid valve (9a) mounted and connected directly to the body (2) of the device and active directly at least on the first air pathway (6a), the first solenoid valve being configured and predisposed to selectively enable or prevent passage of air in the first air pathway (6a) such as to selectively activate the first actuator.

A mobile cam device (1) for commanding needles of a needle bed of a knitting machine, the device comprising a body (2) of the device provided with at least a first housing seating (4a) having a longitudinal development and configured to movably house at least a first actuator (5a) in the body. The device further comprises at least a first command cam (8a) movably mounted and associated to the body and destined to interact with at least a needle of a needle bed of a knitting machine, and at least a first actuator (5a), movably housed at least partially in the first housing seating (4a) in the body and destined to move in a controlled way the first command cam (8a). The first actuator comprises a first piston (15a) and a second piston (16a) distinct from one another and translatably housed in the first seating, the first and second piston being arranged in series along the longitudinal extension of the first seating and being translatable independently with respect to one another. The body (2) of the device is one and one alone, and is made in a single piece.

A mobile cam device (1) for commanding needles of a needle bed of a knitting machine, the device comprising a body (2) of the device provided with at least a first housing seating (4a) having a longitudinal development and configured to movably house at least a first actuator (5a) in the body. The device further comprises at least a first command cam (8a) movably mounted and associated to the body and destined to interact with at least a needle of a needle bed of a knitting machine, and at least a first actuator (5a), movably housed at least partially in the first housing seating (4a) in the body and destined to move in a controlled way the first command cam (8a). The first actuator comprises a first piston (15a) and a second piston (16a) distinct from one another and translatably housed in the first seating, the first and second piston being arranged in series along the longitudinal extension of the first seating and being translatable independently with respect to one another. The body (2) of the device is one and one alone, and is made in a single piece.

A circular knitting machine (1) for knitwear or hosiery, comprising a bearing structure (2), a needle cylinder (C), a plurality of needles and a plurality of thread feeding points, or feeders (3), positioned circumferentially about the needle cylinder, in which the thread is supplied to the needles. Each feeder is provided with at least a thread guide group (4), comprising a body (5), a pneumatic supply inlet (6), a plurality of feeders, a plurality of pneumatic actuators able to move the feeders, and a plurality of solenoid valves (8) mounted and connected directly to the body (5), wherein each solenoid valve activate or deactivates the pneumatic supply to a respective pneumatic actuator of the thread guide group. Each feeder further comprises a mobile cam device (10) for command of the needles, comprising a body (11), a pneumatic supply inlet (12), one or more mobile command cams (13) able to interact with the needles, a plurality of pneumatic actuators which move the command cams, and a plurality of solenoid valves (14) mounted and connected directly to the body (11), wherein each solenoid valve activates or deactivates the pneumatic supply to a respective pneumatic actuator of the device (10). Each feeder comprises an electronic feeder command board (20), able to command at least the solenoid valves (8) of the thread guide group (4) and the solenoid valves (14) of the mobile cam device (10), with the aim of selectively activating the pneumatic actuators of the thread guide group and the mobile cam device (10). The knitting machine (1) comprises at least a pneumatic supply pathway able to supply the pneumatic actuators of the plurality of feeders (3) of the machine.

A circular knitting machine (1) for knitwear or hosiery, comprising a bearing structure (2), a needle cylinder (C), a plurality of needles and a plurality of thread feeding points, or feeders (3), positioned circumferentially about the needle cylinder, in which the thread is supplied to the needles. Each feeder is provided with at least a thread guide group (4), comprising a body (5), a pneumatic supply inlet (6), a plurality of feeders, a plurality of pneumatic actuators able to move the feeders, and a plurality of solenoid valves (8) mounted and connected directly to the body (5), wherein each solenoid valve activate or deactivates the pneumatic supply to a respective pneumatic actuator of the thread guide group. Each feeder further comprises a mobile cam device (10) for command of the needles, comprising a body (11), a pneumatic supply inlet (12), one or more mobile command cams (13) able to interact with the needles, a plurality of pneumatic actuators which move the command cams, and a plurality of solenoid valves (14) mounted and connected directly to the body (11), wherein each solenoid valve activates or deactivates the pneumatic supply to a respective pneumatic actuator of the device (10). Each feeder comprises an electronic feeder command board (20), able to command at least the solenoid valves (8) of the thread guide group (4) and the solenoid valves (14) of the mobile cam device (10), with the aim of selectively activating the pneumatic actuators of the thread guide group and the mobile cam device (10). The knitting machine (1) comprises at least a pneumatic supply pathway able to supply the pneumatic actuators of the plurality of feeders (3) of the machine.

A knitting machine, particularly with high gauge, with improved needle actuation cams, comprising a needle holder which supports a plurality of side-by-side needles, each one of the needles is provided with at least one heel that protrudes from one face of the needle holder, each one of the needles has at least one elastic flexing along its extension which determines an offset of its at least one heel with respect to the head of the needle along a direction that is substantially parallel to the actuation trajectory of the needle holder and the at least one path is offset in a substantially corresponding manner, with respect to a theoretical path of actuation of an ideal rectilinear needle with its head in alignment with its at least one heel.