摘要:
A shedding apparatus for waste selvage includes a pair of first swing levers and a pair of second swing levers for forming an open shed of selvage yarns. The drive force to the swing levers is transmitted by cranking through a drive shaft which is coaxial with the sun gear of a planetary gear mechanism. The crank mechanism using the cranking includes a crank, first end of which is fixedly connected to the drive shaft for rotation therewith, a drive lever for transmitting a rotational force to the swing levers, and a connecting rod connected between second end of the crank and the drive lever. A ratio between an eccentric distance of the crank and a length of the drive lever is less than 1.
摘要:
A shedding apparatus for waste selvage includes a pair of first swing levers and a pair of second swing levers for forming an open shed of selvage yarns. The drive force to the swing levers is transmitted by cranking through a drive shaft which is coaxial with the sun gear of a planetary gear mechanism. The crank mechanism using the cranking includes a crank, first end of which is fixedly connected to the drive shaft for rotation therewith, a drive lever for transmitting a rotational force to the swing levers, and a connecting rod connected between second end of the crank and the drive lever. A ratio between an eccentric distance of the crank and a length of the drive lever is less than 1.
摘要:
An apparatus moves a warp thread in a controlled manner by a punctuate compulsory guidance between three positions, namely a middle, an upper and a lower position. It comprises a pendulum which is pivotal about an axis and into which an electrical coil is integrated and stationary permanent magnets. The named positions are given by equilibrium positions of the pendulum, with forces which act on the pendulum in these positions being in each case in an equilibrium. The equilibrium positions for the upper or the lower position respectively can be produced by forces between the permanent magnets and the currently carrying coil; the equilibrium position for the middle position is given by the pendulum with a current-less coil.
摘要:
A heald frame comprises: a heald support frame for supporting a plurality of healds in parallel, the heald support frame having a central plate portion and a pair of ring-shaped rectangular heald supporting portions extending in opposite directions from the central plate portion; and a heald support extending perpendicularly from the central plate portion, the heald support being integrally connected to the central plate portion of the heald support frame via a generally V-shape joint. The heald frame is made from a reinforced composite material composed of a synthetic resin and a reinforcing filler. Each of the heald supporting portions includes one lower supporting rod for supporting at least a heald.
摘要:
An apparatus for controlling warp threads on weaving machines, particularly suited for control of warp threads on Jacquard type machines, for example selvedge machines. Control members are arranged to control movement of a warp thread and are adapted to be moved in arcuate paths by a reciprocatable member which reciprocates repeatedly. Selectively operable members cooperate with the control members to allow the control members to reciprocate fully with the reciprocatable members or to be held in a position in which the control members either reciprocate less than the reciprocatable members or do not reciprocate at all. The control members have abutting surfaces in different planes which slide relative to each other and which permit the control members to be positioned with the abutting surfaces facing each other with a combined thickness substantially the same as the overall thickness of one of the control members.
摘要:
A warp shedding apparatus of a loom includes a plurality healds arranged in a weaving width direction of the loom. Each heald has a thread eyelet through which a ground warp yarn is passed and held. The healds are raised and lowered to form a shed. A difference in tension between raised ground warp yarns and lowered ground warp yarns held by the healds located in opposite end portions in the weaving width direction is greater than a difference in tension between raised ground warp yarns and lowered ground warp yarns held by the healds located in a central portion in the weaving width direction.
摘要:
A power loom selvage forming device includes at least two thread guide elements for guiding selvage threads. The thread guide elements are guided in longitudinal guides and are connected by transmission elements to a drive shaft driven by a drive motor. The axis of the drive shaft is perpendicular to the direction of motion of the thread guide elements, with the transmission element converting the rotations of the drive motor into longitudinal motions of the thread guide elements containing at least one element mounted on the drive shaft and including articulation points eccentric to the drive shaft and at a mutual angular separation. The drive motor is rotatable by a control into predetermined angular positions at predetermined times.