CIRCULAR KNITTING MACHINE

摘要

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.

主权项

1. A circular knitting machine (1) for knitwear or hosiery, comprising:
a bearing structure (2); at least a needle-bearing organ or needle cylinder (C) rotatably mounted in the bearing structure; a plurality of needles supported by the needle cylinder (C) and mobile parallel to a rotation axis of the needle cylinder so as to produce a knitted fabric; a plurality of thread feeding points, or feeders (3), wherein the thread is supplied to the needles of the machine, the feeders being positioned circumferentially about the needle-bearing organ and distanced angularly to one another;wherein each feeder comprises at least:
a device for feeding thread to the plurality of needles, or “thread guide group” (4), comprising a body (5) of the thread guide group, an inlet (6) for pneumatic supply, i.e. a flow of compressed air, a plurality of thread feeding organs, or “thread guides”, arranged laterally to the needle-bearing organ at the respective feeder, and a plurality of pneumatic actuators movably housed in the body of the thread guide group and configured so as to controlledly move the plurality of thread guides, the thread guide group comprising a plurality of solenoid valves (8) mounted and connected directly to the body (5) of the thread guide group, each solenoid valve (8) being configured and predisposed to activate or deactivate the pneumatic supply to a respective pneumatic actuator of the thread guide group (4), in order to selectively actuate the respective actuator; a mobile cam device (10) for control of the needles, comprising a respective body (11) of the mobile cam device, a respective pneumatic supply inlet (12), i.e. a flow of compressed air, one or more command cams (13) movably mounted to the body (11) and able to interact with the needles, and a respective plurality of pneumatic actuators movably housed in the body (11) and configured to controlledly move the one or more command cams, the mobile cam device comprising a respective plurality of solenoid valves (14) mounted and connected directly to the body (11) of the mobile cam device (10), each solenoid valve (14) being configured and predisposed to activate or deactivate the pneumatic supply of a respective pneumatic actuator of the device, in order to selectively actuate the respective actuator; an electronic feeder command board (20), for example located on the thread guide group (4), configured and predisposed 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), in order to selectively actuate the pneumatic actuators of the thread guide group (4) and the pneumatic actuators of the mobile cam device (10); the knitting machine (1) further comprising at least a pneumatic supply pathway (50) able to supply the pneumatic actuators of the plurality of feeders (3) of the machine.