| 摘要 |
A stitch cam for a circular knitting machine using needles having operating butts of a predetermined height, includes a support body having a front facing surface, a first cam plate fixedly attached to the front facing surface, and a second cam plate movably attached to the fixed cam plate. When assembled, the first and second cam plates define a closed cam track having a spacing sized for accommodating the operating butt of the needles. The movable cam plate includes a pin for engaging a spiral cam cylinder of the support body to provide linear motion of the movable cam plate relative to the first cam plate to alter the position of at least a portion of the closed cam track in order to selectively raise and lower the stitch level of the needles in a circular knitting machine. The movable cam plate includes a pair of narrow angled cam track defining sections which fit into corresponding slotted portions of the fixed cam plate, defining a path of travel, and include a geometry which allows the remainder of the needle to contact only the fixed cam plate. A shim member placed between the cam plates and support body allows radial adjustment of the stitch cam relative to a needle supporting element, such as a cylinder or dial, and facilitates movement of the movable cam plate relative to the front surface of the support body, particularly when dissimilar materials are used.
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