Cam apparatus for knitting fabric

A cam apparatus for knitting a fabric in a weft knitting machine having front and rear needle beds facing each other at a needle bed gap, the cam apparatus comprising:

• a knitting cam mounted on a carriage moving along each of the needle beds, to act on a needle body of each of compound needles arranged side by side in each of the needle beds;
• and
• a slider cam mounted on a side of the carriage facing the needle bed gap, to act on a butt of a slider and to drive an operation of knitting a fabric so that the slider is cooperated with the needle body driven by the knitting cam,
• wherein the cam apparatus includes a group of transfer cams provided in series with respect to the knitting cam on at least one of the carriages, and a group of receiving cams provided in series with respect to the knitting cam on at least one of the carriages, which is opposed at the needle bed gap to the carriage provided with the group of transfer cams,
• the group of transfer cams including:
• a slider transfer raising cam, disposed at an ending position of a cam route through which the butt of the slider is guided by the slider cam, the slider transfer raising cam being capable of controlling a change-over between driving and non-driving of the butt of the slider, wherein during the change-over to drive the slider, the slider transfer raising cam guides the butt of the slider and moves further to convey the slider to a cam route in which a tongue of the slider advances towards the needle bed gap than a hook of the needle body;
• and
• a transfer cam, disposed on the cam route to which the butt of the slider is guided by the slider transfer raising cam to drive the slider to advance to a transfer position where a knitted loop can be transferred at a farther advanced position towards the needle bed gap than a position advanced by the slider cam, and
• the group of receiving cams including:
• a transfer-side knitted loop receiving cam disposed at a position facing the transfer cam of the group of transfer cams, the transfer-side knitted loop receiving cam being capable of controlling a change-over between driving and non-driving of the needle body, wherein during the change-over to drive the needle body, the transfer-side knitted loop receiving cam drives the needle body and moves to convey a hook of the needle body to a knitted loop receiving position where a knitted loop can be received from the slider advancing to the transfer position by the transfer cam;
• and
• a slider receiving raising cam disposed in a vicinity of a position where the driving of the needle body is started by the knitted loop receiving cam, the slider receiving raising cam being capable of controlling a change-over between driving and non-driving of the butt of the slider, wherein during the change-over to drive the butt of the slider, the slider receiving raising cam guids the butt of the slider and moves further to convey the slider to a receiving retention route for retaining the knitted loop in which a tongue of the slider advances towards the needle bed gap than a hook of the needle body,
• wherein the group of transfer cams further include a transfer-side knitted loop transfer cam disposed at a position facing a receiving retention route through which the slider is guided by the receiving raising cam of the group of receiving cams, the transfer-side knitted loop transfer cams being capable of controlling a change-over between driving and non-driving of the needle body, and conveying the hook of the needle body independently or together with the slider to the knitted loop receiving position when carrying out the change-over to drive the needle body.