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1. 发明专利

JPH11269741A DRIVE CONTROL OF YARN FEED CUTTER IN WEAVING MACHINE 失效
公开(公告)号：JPH11269741A
公开(公告)日：1999-10-05
申请号：JP8501598
申请日：1998-03-16
申请人： TSUDAKOMA IND CO LTD
发明人： TAMURA ZENJI , ISHIDA TOMOKAZU
IPC分类号： D03D49/70
摘要： PROBLEM TO BE SOLVED: To keep the cut timing by the yarn feed cutter constant to the crank angle of the main shaft under any operation states of a weaving machine. SOLUTION: In a weaving machine equipped with a yarn feed cutter 2 driven by an electric actuator, the start timing of the cutting operations is decided according to the present operation state of the weaving machine and the electric actuator is driven based on the crank angle of the main shaft of the weaving machine responding to the start timing for this cutting operation. Thus, the delay of the operation time of electric actuator t is compensated by driving the electric actuator on the basis of the crank angle of the weaving machine.

2. 发明专利

JPH1112889A WEFT INSERTING APPARATUS FOR FLUID JET TYPE LOOM 失效
公开(公告)号：JPH1112889A
公开(公告)日：1999-01-19
申请号：JP18040797
申请日：1997-06-20
申请人： TSUDAKOMA IND CO LTD
发明人： TAMURA ZENJI
IPC分类号： D03D47/28
摘要： PROBLEM TO BE SOLVED: To carry out a stable weft insertion while reducing energy required for weft insertion, by making the relation between the delivery speed of a weft from a roller and the transportation velocity by a jet fluid not interfere weft inserting even in the case of changing transportation velocity by a jet fluid. SOLUTION: In this weft inserting apparatus 2 for a fluid jet type loom 1 which is equipped with a roller 13 for frictionally holding a weft Y drawn out from a yarn supplying body on an upstream side apart from a weft inserting nozzle 5, a servo motor 14 for driving the roller, a control means 15 for controlling the servo motor 14 during the weft inserting period according to a fixed velocity pattern corresponding to the rotation angle of a main shaft 17 of a weaving machine and sends a weft for one pick amount from the roller to the weft inserting nozzle, the apparatus is equipped with a tension detecting means 19 for discovering the tension of the weft between the roller and the weft inserting nozzle and a correcting means for calculating the correction amount of the velocity pattern based on the detected value from the tension detecting means and outputting the correction amount.

3. 发明专利

JPH10102356A START-CONTROLLING METHOD AND OPERATION-CONTROLLING METHOD FOR LOOM 失效
公开(公告)号：JPH10102356A
公开(公告)日：1998-04-21
申请号：JP25714796
申请日：1996-09-27
申请人： TSUDAKOMA IND CO LTD
发明人： NAKAGAWA TOSHIO , TAMURA ZENJI
IPC分类号： D03D51/00 , D03C13/00
摘要： PROBLEM TO BE SOLVED: To effectively prevent the formation of web defect caused by the delay of the motion of a mobile part such as a heald frame by making the motion of a driving motor precede relative to a normal motion pattern. SOLUTION: At the start of a loom to drive a moving part with an exclusive driving motor, the moving part is driven first and, after the start of the loom, the motion of the moving part is continuously transferred to the normal motion pattern through a correction pattern SKS. In the case of a heald frame, the frame is opened at the start of the loom and the motion of the frame is continuously transferred after the start of the loom to the normal opening pattern SKi (i=NS+1) of the cycle number NS+1 subsequent to the starting cycle number NS through a correction pattern SKS.

4. 发明专利

JPH09273047A REMOVAL OF PICKING-MISSED YARN IN LOOM 失效
公开(公告)号：JPH09273047A
公开(公告)日：1997-10-21
申请号：JP10438196
申请日：1996-03-29
申请人： TSUDAKOMA IND CO LTD
发明人： TAMURA ZENJI , YAMADA SHIGEO
IPC分类号： D03D47/28 , D03C13/00
摘要： PROBLEM TO BE SOLVED: To provide a method for removing a picking-missed yarn in a loom, capable of utilizing an existing device to remove the picking-missed yarn without using an exclusive pulling device on the detection of the picking miss. SOLUTION: In this loom in which a weft-picking operation is carried out by catching a weft 2 supplied from a weft-supplying member 3 with the peripheral surfaces of rotation rollers 8 on a weft route between the weft-supplying member 3 and a main nozzle 10, transferring the caught weft toward a nozzle, and simultaneously assisting the weft 2, when a picking miss is detected, the loom is stopped in a state that the weft 2 is connected to the main nozzle 10, and the missed yarn 2a is exposed on a cloth fell 24. While the weft 2 is caught with the peripheral surfaces of the rotation rollers 8, the rotation rollers 8 are subsequently reversely rotated to pull out the missed yarn 2a from the cloth fell 24.

5. 发明专利

JPH0892845A CONTROL OF PICKING 失效
公开(公告)号：JPH0892845A
公开(公告)日：1996-04-09
申请号：JP25004694
申请日：1994-09-19
申请人： TSUDAKOMA IND CO LTD
发明人： TAMURA ZENJI
IPC分类号： D03D47/34 , D03D47/36
摘要： PURPOSE: To realize a stable picking by controlling the reaching timing of a weft with a contact type weft-pulling device. CONSTITUTION: This method for controlling the picking comprises detecting the reaching timing of a weft 3, comparing the detected reaching timing with a target reaching timing, changing the contact length of the weft 3 with a rotation roller 10 in response to the deviation of the timing, and controlling the reaching timing of the weft 3 in the one approaching the target reaching timing.

6. 发明专利

JPH07279012A WEFT DETECTOR OF LOOM 失效
公开(公告)号：JPH07279012A
公开(公告)日：1995-10-24
申请号：JP9581594
申请日：1994-04-07
申请人： TSUDAKOMA IND CO LTD
发明人： TAMURA ZENJI
IPC分类号： G01B11/00 , D03D51/34 , D06H3/08
摘要： PURPOSE:To remove background oscillation frequency components accompanied by the weaving operation of a loom to accurately detect a weft. CONSTITUTION:The weft detector of the loom is provided with a projector 23 for projecting light toward a weft to be beat up and a receiver 25 for receiving the light projected from the projector 23. The weft detector is further provided with an AGC circuit 40 for feeding back the output of the receiver 25 to the projector 23, and a frequency filter 42 disposed in the feedback passageway part of the AGC circuit and used for allowing the passage of smaller frequency components than the background oscillation frequency component accompanied by the weaving movement of the loom among the output signals of the receiver 25 but shutting the passage of at least the weft detection signal.

7. 发明专利

JPH0734353A JET LOOM 失效
公开(公告)号：JPH0734353A
公开(公告)日：1995-02-03
申请号：JP19558593
申请日：1993-07-14
申请人： TSUDAKOMA IND CO LTD
发明人： TAMURA ZENJI
IPC分类号： D03D47/28 , D03D51/12
摘要： PURPOSE:To provide a jet loom designed to improve productivity through preventing yarn breakages along with narrowing both allowance angle and allowance time ranges. CONSTITUTION:This jet loom is equipped with such a brake as to detect the flying speed information of wefts in a jet loom to make picking of wefts into the opening of warps and, based on this information, to brake the weft so as to decrease the impact in weft restraint and a speed controller for detecting the time when the wefts reached a specified position and, based on the time, controlling the revolving speed of the main shaft of the loom so as to coincide this time with the target value.

8. 发明专利

JPH06158478A CONTROLLER FOR STOPPING LOOM AT DEFINITE POSITION 失效
公开(公告)号：JPH06158478A
公开(公告)日：1994-06-07
申请号：JP29855492
申请日：1992-11-09
申请人： TSUDAKOMA IND CO LTD
发明人： TAMURA ZENJI
IPC分类号： D03D51/08
摘要： PURPOSE:To stop a loom at a right definite position regardless of value of load by controlling at least either one of brake torque of brake and brake starting angle based on the load from a load detecting means. CONSTITUTION:A crank angle theta which an encoder EN connected to a main spindle MS of a loom detects inputs to a comparator 41 and a load detecting means 11 consisting of a current transfer CT interposed in a power line detects electric current I which flows to a loom motor M and inputs to a control means 20 consisting of a function generator 21. The function generator 21 determines excitation voltage V to the input current I. When any stopping cause occurs now and stopping signal is output to the loom, the comparator 41 compares the crank angle theta with control starting angle theta of a setting unit 42 and when thetais thetas, a braking signal Sb inputs to an excitation circuit BC and the excitation circuit BC excites a brake B according to brake torque by the excitation voltage Vx to stop the loom at a definite position.

9. 发明专利

JPH04300339A MOTION MECHANISM CONTROLLER OF LOOM 失效
公开(公告)号：JPH04300339A
公开(公告)日：1992-10-23
申请号：JP6058591
申请日：1991-03-25
申请人： TSUDAKOMA IND CO LTD
发明人： TAMURA ZENJI
IPC分类号： D03C13/00 , D03D51/00
摘要： PURPOSE:To prevent inclination phenomenon of a mechanical part when each motion mechanism of opening device, reed, repier, etc., of a loom is controlled by normal or severe rotation of exclusive driving motor. CONSTITUTION:A motion pattern specifying means 10 inputs crank angle thetaof a loom and prepares a motion pattern Km to be driven is prepared. A rotation ordering part 30 outputs desired rotation amount Po of a driving motor M, in correspondence to a crank angle theta, based on the motion pattern Km and upper limit value PH and lower limit value PL of driving motor M which upper and lower limit value storage device 20 stores and carries out normal or reverse rotation of driving motor M through a rotation controller 40. An Oscillating position changing circuit 80 rotates the driving motor M at a low speed through an initial position setting circuit 70 and low-speed driving means 62 to change oscillating region of a crank mechanism CR.

10. 发明专利

JPH03234846A METHOD FOR OPERATING LOOM AND APPARATUS THEREFOR 失效
公开(公告)号：JPH03234846A
公开(公告)日：1991-10-18
申请号：JP3112290
申请日：1990-02-09
申请人： TSUDAKOMA IND CO LTD
发明人： TAMURA ZENJI
IPC分类号： D03D51/02 , D03D51/00 , H02P1/26 , H02P27/06
摘要： PURPOSE:To prevent weaving bars from occurring by changing over an operation parameter to a shockless parameter so as to provide a higher produced torque than the rated value before completing start-up and the rated value after the completion using an inverter device interposed between a power source and a motor. CONSTITUTION:When a loom is started up, an operation parameter is changed over to a shockless parameter through an inverter device, interposed between a power source and a loom motor and equipped with a smoothing means for changing over the operation parameter to the shockless parameter so as to provide a higher produced torque of the aforementioned loom motor than the rated value during a period just after the start-up to completion and the rated value after outputting the signal of completed start-up. Thereby, the scope for occurrence of a time zone in which the motor causes a passive state recognized in conventional contact circuits in changing over the operation parameter is eliminated.

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