Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H13/00—Other common constructional features, details or accessories
  • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
  • D01H1/14—Details
  • D01H1/20—Driving or stopping arrangements
  • D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control

Definitions

• Spinning machines of this type either have a drafting system row on both longitudinal sides of the machine or only on one of their two longitudinal sides of the machine. The latter is particularly the case with flyers and similar roving machines. In the case of ring spinning machines, however, it is customary to provide a drafting unit row on each of the longitudinal sides of the machine.
• the bottom rollers one
• the drive power of an electric motor is M- ⁇ O, where M is the torque of the output shaft of the electric motor and Cd is the angular velocity. At constant operating speed, the power consumption of the engine is proportional to its torque.
• the response value of the sensing device is first automatically set very high and then some time later, preferably only after the operating speed of the spinning machine has been reached, is automatically set so low that it then also indicates sensitive winding formation .
• the response value is set so high that here the sensing device can practically only respond to incorrect gear ratios of the gear transmission which positively connects the respective lower roller strands, but not to windings which form during the starting up.
• the optical alarm device 34 then signals to an operator that a winding which has led to an excessive driving torque or possibly another malfunction which leads to such an excessive torque has arisen on the spinning machine in question and calls it to the spinning machine to remedy this disturbance. If it is provided that the torque signal of the * torque meter 33 is differentiated in time by means of a differentiating element, the threshold value 15 then responds to a predetermined rapid increase in the torque of the motor 22. Of course, it is also possible for the threshold switch 29 ′ to also switch off the contactors 25 each time they respond.
• Bottom rollers of the drafting system row shown at both longitudinal ends are assigned positive gear mechanisms 20, 21, 20 ', 21', whereby the length of the bottom rollers 25 11, 12, 13 can be made considerably greater than in the case of bottom rollers driven on one side according to FIG. 1.
• these pairs of gearwheels 20, 20 'and 21, 21' connecting the same lower rollers must have identical gear ratios, and if 30 during a change of gear ratio two gearwheels 20, 20 connecting the same lower rollers 11, 12 or 12, 13 in a form-fitting manner or 21, 21 'to different
• the threshold switch 29 responds by switching off the contactor 25 and simultaneously triggering an alarm by means of an acoustic alarm device 34 '.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Spinning Or Twisting Of Yarns (AREA)

Priority Applications (3)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6762133

Family Applications (1)

Country Status (3)

Cited By (5)

Families Citing this family (3)

Citations (4)

Family Cites Families (1)

• 1984
  • 1984-04-26 JP JP59501940A patent/JPS61502000A/ja active Pending
  • 1984-04-26 WO PCT/DE1984/000095 patent/WO1985004908A1/de unknown
• 1985
  • 1985-04-26 CH CH544385A patent/CH669406A5/de not_active IP Right Cessation

Patent Citations (4)

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