| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Loom method and apparatus for avoiding beat up markings in a fabric | US123646 | 1993-09-17 | US5404916A | 1995-04-11 | Herbert Mueller; Valentin Krumm; Fritz Gehring |
| When a faulty weft thread must be removed after it has been bound into the fabric and beat-up, it is necessary to perform a so-called reverse weaving operation following the stopping of the normal weaving operation in response to a stop signal signifying that a faulty weft thread has been detected. For this purpose the loom main shaft and the heald drive shaft are rotated for a number of rotational degrees in the same direction in which these shafts are rotated just prior to the stopping of a weaving operation in response to the above mentioned signal. Next, the drive between the main shaft and the heald shaft is interrupted. Next, the main shaft and thus also the reed shaft and with it the reed, are rotated back within a predetermined angular range between two successive reed beat-up motions. During this time the heald shaft is rotated back, preferably to the so-called detection point with a higher r.p.m., or rather with a higher angular speed than the main shaft. This function is accomplished by an auxiliary step-up transmission gear between the main shaft and the heald shaft. The auxiliary gear is bypassed during normal operation when there is no weft fault and it is connected in series during the operation for removing of a faulty weft thread. | ||||||
| 42 | Device for automatically varying the position of the shed vertex in a loom | US136450 | 1993-10-14 | US5386855A | 1995-02-07 | Luciano Corain; Spanevello Roberto; Marco Novella |
| A device for automatically varying, during the transient states following loom stoppages, the shed vertex position in the loom. The device consists of a sensor for determining the beat-up pulse intensity of the loom reed. The device also is connected to a comparator which receives a predetermined set value corresponding to the beat-up pulse intensity of the reed during normal operation. The output of the comparator is used, through a control unit, to synchronously drive the electric motors that operate the beam and the take-up roller of the loom, respectively. | ||||||
| 43 | Method for starting a power loom as a function of standstill time | US774579 | 1991-10-10 | US5172732A | 1992-12-22 | Valentin Krumm; Klaus Zeleny |
| The starting or restarting of a power loom is controlled through a loom control system which controls the operation of a flywheel mass and the operation of the main electric motor of the loom. The control system ascertains the standstill time and the cause for the standstill, as well as the type of weaving binding that was employed at the time of the shut-down. These parameters are processed in a micro-processor which produces a respective result signal and uses that signal for the selection of a suitable start-up or run-up program. These programs are stored in a program library or memory. The micro-processor controls the run-up in response to the selected program, whereby conventionally occurring faults in the woven fabric are avoided. Even fabric faults caused by a standstill, are avoided. | ||||||
| 44 | Prevention of weft streaks after loom start up | US496709 | 1990-03-21 | US5090452A | 1992-02-25 | Dore Dondi Benelli |
| In order to prevent the formation of weft streaks in cloth when a loom is restarted after a stoppage, the warp tension is reduced by a predetermined amount as soon as the stoppage occurs and the original warp tension is restored before restarting. The reduction in the warp tension prevents the tensile failure, that is, the plastic extension of the warp yarn, and ensures the exact repositioning of the beating-up line of the weft upon restarting. | ||||||
| 45 | Method and device for controlling a warp beam drive of a weaving machine | US894250 | 1986-08-07 | US4750527A | 1988-06-14 | Walter Rehling |
| In a control for a warp beam drive of a weaving machine, the warp beam drive is regulated at all times by a control which receives input signals representing the number of rotations of the warp beam and representing the tension of the warp threads. If the weaving machine has come to a standstill because of an error which has taken place, then, before the warp beam drive is re-started, the tension on the warp threads is increased to a specific value by rotating the warp beam in reverse, in order, during re-start, to take warp thread tension back to a predetermined normal value again through suitable action on the warp beam drive. The effect of this is that no stop marks or start marks are formed in the woven material as a result of the weaving machine having stood still. This control includes a digital computer, to which the number of rotations of the warp beam is supplied by means of an impulse transmitter, and the tension of the warp threads supplied by means of a motion pickup, which picks up the position of a dancer. The signal from the impulse transmitter guided to the computer is used not only as a number-of-rotations signal, but also as a route signal, especially when the tension on the warp threads is raised to the specific increased value. | ||||||
| 46 | Driving arrangement for a circular loom | US736784 | 1985-05-22 | US4658862A | 1987-04-21 | Franz X. Huemer |
| A driving arrangement for a circular loom has at least one electromagnetic coupling which is capable of being actuated by a stop impulse synchronous with the stop signal of the weft thread supervisor, is disposed between the driving motor of the circular loom and the transmission of the fabric drawing-off device. This permits at a stop signal from the weft thread supervisor the disengagement of the transmission of the fabric drawing-off device from the driving motor of the circular loom, whereupon the fabric drawing-off device, with the inertia of the main shaft, immediately stops, unaffected by after-running of other loom components connected to the motor. | ||||||
| 47 | Weaving machine | US571450 | 1984-01-17 | US4657051A | 1987-04-14 | Francisco Speich |
| In the weaving machine warp threads (24) are guided from a warp let-off apparatus (2) via a shedding apparatus (6) to a fabric take-up apparatus (4). The weaving machine contains a main drive (8) at which are connected a weaving reed (14) and a filling thread inserting element (16). In addition, an auxiliary drive shaft (46) is connected at the main drive (8), which auxiliary drive shaft (46) drives the warp let-off apparatus (2), the fabric take-up apparatus (4) and the shedding apparatus (6). A common drive shaft (66) of the warp let-off apparatus (2) and of the fabric take-up apparatus (4) is connected with the auxiliary drive shaft (46) via a reversing gear unit (10). The reversing gear unit (10) is constructed as a superimposed gear unit and contains an auxiliary motor (90) in order to superimpose a reverse rotational movement of the warp let-off apparatus (2) and the fabric take-up apparatus (4). An electronic control apparatus (12), which is connected with the shedding apparatus (6) and the reversing gear unit (10), makes it possible to reverse the weaving program when the weaving machine is running forward. | ||||||
| 48 | Method of and apparatus for controlling motor-driven let-off and take-up system for looms | US692273 | 1985-01-17 | US4619294A | 1986-10-28 | Tsutomu Sainen; Takeshi Asai |
| Motor-driven let-off and take-up motions in a loom are controlled by controlling the rotation of a motor for driving warp yarns with a tension control system operating in response to a signal indicative of a target tension and a feedback input signal indicative of an actual tension of the object during a normal operation of the loom, and controlling the rotation of the motor with a feedforward control system during a transient operation of the loom, the feedforward control system storing operation patterns of directions, and speeds of rotation and angular displacement of the motor for respective operation modes and weaving conditions of the loom. At the time of the transient operation, and operating condition of the loom is detected, an appropriate operation pattern is read from the feedforward control system based on the detected operation mode, and the read operation pattern is applied as a control signal to a drive control system for the motor. | ||||||
| 49 | Method of preventing starting marks in weaving | US25588363 | 1963-02-04 | US3173455A | 1965-03-16 | MCCLURE JR WILLIAM M |
| 50 | Fabric control mechanism to prevent starting marks | US27307763 | 1963-04-15 | US3165125A | 1965-01-12 | TINKHAM WESLEY L |
| 51 | Clutching means for weaving looms | US61972256 | 1956-11-01 | US2888044A | 1959-05-26 | JAIME PICANOL |
| 52 | Starting Method for a Weaving Machine | US15546812 | 2016-02-11 | US20180023226A1 | 2018-01-25 | Michael LEHMANN |
| The invention relates to a method for the controlled run-up of a weaving and shedding machine, wherein the weaving and the shedding machine are connected with a controller, wherein the weaving machine is driven by means of a main drive, wherein the shedding machine is driven by means of an electric motor auxiliary drive, wherein the weaving and the shedding machine are connected by means of a common converter intermediate circuit for the energy flow transmission, wherein the shedding machine is started at a time point t0 and is run-up until to a time point t1 to an overspeed that lies above its operating rotational speed, wherein the time point t1 lies before a time point t3, wherein the weaving machine is started at a time point t2 and wherein the start phase of the weaving machine lies in the time interval from the time point t2 to the time point t3, and wherein a power transmission (feedback) by means of the converter intermediate circuit from the shedding machine to the weaving machine is carried out in the stated start phase. The method according to the invention is characterized in that the shedding machine is run-up to a predetermined overspeed between the time points t0 and t1, and that the gradient of the rotational speed progression of the shedding machine is more negative in a later section of the start phase than in an earlier section. | ||||||
| 53 | Loom restarting method | US09292386 | 1999-04-15 | US07299827B1 | 2007-11-27 | Norio Minamitani; Masato Matsumoto; Hirohisa Kitamura; Kiyoshi Arie |
| A loom restarting method restarts a loom stopped due to a loom stopping cause without entailing a “wavy set mark”. When a loom is stopped due to a loom stopping cause entailing faulty picking, the loom restarting method provides a loom stopping command, withholds the loom from a picking operation during a braking period for braking the loom to stop the same in a weaving cycle subsequent to a weaving cycle in which the loom stopping cause occurred, reverses the loom to the weaving cycle in which faulty picking occurred, removes a weft yarn picked by faulty picking, and restarts the loom to resume a normal weaving operation. The main shaft of the loom is positioned, after removing the weft yarn picked by faulty picking, at an angular position at which a picking operation is possible in the weaving cycle in which the weft yarn picked by faulty picking was removed and the reed of the loom is not in contact with a weft yarn inserted in the cloth fell of a fabric on the loom, and then the loom is restarted. | ||||||
| 54 | Method for operating a weaving and shedding machine | US10415385 | 2001-10-06 | US06953063B2 | 2005-10-11 | Valentin Krumm; Dietmar Von Zwehl; Michael Lehmann; Dieter Mayer |
| A method of operating a weaving machine and a shedding machine aims, to achieve so-called soft starts and soft stops, in particular, of the shedding machine. The weaving machine is equipped with an electromotive main drive and the shedding machine is equipped with an electromotive auxiliary drive. In the method the shedding machine is started at a time point (t1) that lies before the starting time point of the weaving machine, and, upon a triggered interruption of the weaving process, a shedding machine comes to the standstill at a time point (t5) that lies after the standstill time point (t4) of the weaving machine. | ||||||
| 55 | Method for operating a weaving and shedding machine | US10415385 | 2003-04-25 | US20040031533A1 | 2004-02-19 | Valentin Krumm; Dietmar Von Zwehl; Michael Lehmann; Dieter Mayer |
| The object of the invention is to optimize the electromotive driving and braking moments or torques required in the starting and braking phase of the weaving and shedding machine while reducing the mechanical loading or stressing of machine elements of the shedding and weaving machine and while preventing starting marks in the woven fabric, and on the basis thereof, to achieve so-called soft starts and soft stops, in particular, of the shedding machine. The object is achieved according to the invention in that, in a weaving machine equipped with an electromotive main drive and in a shedding machine equipped with an electromotive auxiliary drive, the shedding machine is started at a time point (t1) that lies before the starting time point of the weaving machine, and in that, upon a triggered interruption of the weaving process, the shedding machine comes to the standstill at a time point (t5) that lies after the standstill time point (t4) of the weaving machine. | ||||||
| 56 | Method for avoiding fabric faults during transitional loom operating conditions | US549624 | 1995-10-27 | US5590692A | 1997-01-07 | Peter D. Dornier; Adnan Wahhoud; Peter Czura; Hans-Dieter Scorl |
| Faults in fabrics such as smooth woven fabrics or pile fabrics caused by transition operational conditions are avoided, especially on air nozzle weaving looms. Such transition operational conditions may occur when rated operating parameters must be changed, for example, due to the use of a different type of weft thread or a change in the weaving pattern and/or weave binding. For this purpose, the weft thread insertion is interrupted only during the duration of the so-called transition operational conditions. Weft insertion is interrupted by performing so-called fluidic or non-fluidic empty or mis-shots. Simultaneously, the warp let-off and the fabric take-up is controlled as a function of the number or duration of the empty or mis-shots in such a way that at this point of time during the transition operating conditions the beat-up edge of the fabric is held in a position away from the beat-up position of the reed. | ||||||
| 57 | Method for preventing the formation of fabric blemishes by controlling beat-up in a loom | US322000 | 1994-10-12 | US5499662A | 1996-03-19 | Rudolf Vogel; Husnu Evren |
| A method for weaving blemish-free smooth and terry fabric on a loom following a stoppage of the loom after it has woven a fabric fell which terminates in a last weft thread. The loom has a driven reed which reciprocates during normal weaving towards and away from the fell over a predetermined beat-up distance to successively position additional weft threads at predetermined target positions which assure a uniform, blemish-free fabric. Following a loom stoppage, the next weft yarn, for smooth fabric, and a plurality of next weft yarns, for terry fabric, are moved towards the last weft yarn over a compensated beat-up distance which is different from the predetermined beat-up distance to thereby position the next weft yarn at the desired target position relative to the least weft yarn of the fell to avoid the formation of fabric blemishes. Thereafter the reed is again moved over the predetermined beat-up distance during subsequent picks of the loom. | ||||||
| 58 | Method for restarting the operation of an air jet loom, after defective weft removal | US324615 | 1994-10-18 | US5487413A | 1996-01-30 | Kunio Hatakeyama; Yoshihiko Habu |
| A loom is slowly operated in reverse rotation to move the loom to a position where a cutter is able to easily cut an improper weft when there occurs an error in the picking motion. Then, the loom is operated in normal rotation to move it to a position where the improper weft remaining in the shedding motion can be easily removed. A pick finding device is then operated to temporarily separate a main shaft and the shedding motion, and a harness frame is reversely rotated for 360.degree.. A new weft is then inserted after the improper weft is removed from the shedding motion. In the course of the operation, a cloth fell is held at a fixed position to protect the cloth fell from being beaten by a reed. The take-up motion is then operated in normal rotation, and at the same time the let-off motion is rotated in the reverse direction at a fixed rotational ratio to provide a warp with proper tension. Thereafter, the loom, take-up motion and let-off motion are simultaneously started for restarting the weaving operation. | ||||||
| 59 | Driving weaving frames for different top and bottom warp tensions at beat up | US948323 | 1992-09-22 | US5273079A | 1993-12-28 | Daniel Beyaert; Ignace Meyns; Henry Shaw |
| A weaving method makes use of a set of weaving frames arranged such that, in each weaving cycle, some of the weaving frames are held in an identical extreme position, while all remaining weaving frames are moved in order to provide different tensions for the top and bottom warp threads at the moment of beating up. The shed is formed so that at the moment of crossing, as the weaving frames change position, the length of the course followed by the crossing warp threads is equal or almost equal to the length of the course followed by the warp threads held in the extreme position. | ||||||
| 60 | Method and apparatus for automatic running control of a loom | US642522 | 1984-08-20 | US4609858A | 1986-09-02 | Katsuhiko Sugita; Toshiyuki Sakano |
| A voltage to be applied to the primary winding of a drive motor is automatically and time-functionally adjusted in relation to the rated voltage of the drive motor in order to provide sufficiently large torque for beating during the starting period of the loom running and transit to normal running of the loom is carried out at a preselected moment other than the moment of beating motion. Change in voltage is effected through either switching in mode of connection for the primary winding or transforming the power source voltage which is maintained constant. | ||||||
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