摘要:
A yarn delivery device is provided with a motor-driven yarn delivery wheel, wherein the rotated position of the yarn delivery wheels is detected with high precision by means of an angle encoder. The angle encoder has at least a resolution s which is greater than the circumference of the yarn delivery wheel, measured in millimeters. The resolution s is preferably greater than five times (preferably 5.24 times) the value of the diameter of a winding of the yarn delivery wheel. The yarn delivery wheel is preferably looped by several (three to twenty) windings.
摘要:
Singled fibers from a fiber strand, separated by a rotor, are collected by suction on a continuously moving surface of a perforated belt or rotary drum. The fiber packet is not formed with a twist in this region and, only upon transfer to a downstream region is the twist applied, e.g. by a ring spindle.
摘要:
Below a ring-spinning spindle, a clamping ring and a clamping sleeve have frustoconical surfaces, at least of one first textured to increase the grip on an underwinding thread. The clamping sleeve, for example, may be spring-biased to axially engage the clamp and force may be required to open the clamp.
摘要:
A spinning machine in which downstream of the drafting frame and as part thereof, beyond the output rollers thereof, a suction roller is provided above the roving and cooperates with at least one counterroller below the roving to condense the roving before it is wound up on a ring-spinning or pot-spinning station.
摘要:
To allow the gap between a pair of belts and the output pair of rollers of a drafting frame for a textile machine to be reduced, the sliver compaction funnel which is disposed at the inlet side of the nip of the output pair of rollers is mounted on an arm which extends alongside the upper rollers or upper belt. The funnel can be mounted on two arms which straddle the ends of the upper roller or upper belt.
摘要:
Spool change in a spinning and twisting frame is triggered automatically by repetitively monitoring a row of spools with a light curtain and triggering the spool change when the measured diameter falls below the predetermined minimum value.
摘要:
A lightweight, rigidified support stand for textile spinning and like machines may be easily manufactured with close tolerances without resort to a casting process by welding together a profiled sheet metal base having a substantially flat main support surface provided with a plurality of receptacles for fastening of machines components and a sheet metal brace member of a U-shaped profile. The formation of the fastener receptacles in the base member enables the receptacles to be arranged in a single plane with close tolerances, while the brace member serves to rigidify the base member.
摘要:
The invention relates to a tangential belt drive for a plurality of similar work units of a machine for the production of twisted or twined yarn. These units are subdivided into sections each having at least approximately the same number of work units and each driven through a tangential belt by an electric motor. Thereby, the number of work units in each section is established taking into account the required power and permissible belt stretch, so that the tangential belts have a considerably reduced width and thickness, compared to the ones commonly used. Further, the guide rollers of the tangential belts of neighboring sections are corotationally connected to each other.In order to improve synchronization and power transmission between sections, the contact angle is increased at the guide rollers and the drive pulleys. This may be done through the corresponding spatial arrangement of the drive pulleys with respect to the guide rollers or through use of an intermediate belt arrangement.
摘要:
A spinning frame of the type having a main drafting zone through which two fiber bands move in spaced parallel relation for subsequent twisting into a single yarn is provided with a first pair of rollers located at the entrance to the main drafting zone, a second pair of rollers located at the exit of the main drafting zone, a pair of endless leather tapes extending about a roller in each of the first and second pair of rollers, and a third pair of rollers for delivering two fiber bands from the main drafting zone to a suitable twisting device. A first pair of fiber band guides is located adjacent to and upstream of the first pair of rollers relative to the direction of travel of the fiber band, a second pair of fiber band guides is located intermediate the second and third pairs of rollers and a pair of coaxially spaced apart annular ring slots are provided in the outer surface of one of the first pair of rollers with the first and second pairs of guides being aligned with the ring slots for maintaining the fiber bands in alignment with the ring slots.
摘要:
A yarn feed system for a textile machine having a clamp for fastening to a mounting ring (4) of the machine. Contact pins are disposed on the clamp (3) and serve the purpose of piercing the insulation of a flat multi-cord cable (17) retained on the machine ring (4). For positionally correct orientation of the flat multi-cord cable (17) before and during the insulation-piercing operation, a guide element (37) is used, which is supported movably on or at the clamp. In the vertical direction, it is preferably retained by a spring arm (49). On its flanks, the flat multi-cord cable (17) preferably has grooves, which can likewise serve to orient the flat multi-cord cable positionally correctly before and during the insulation-piercing operation. The tips of the contact pins are located in the grooves and thereby bring about the alignment of the flat multi-cord cable (17 or 54).