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WO2002002856A2 - Dispositif d'alimentation en fils pour machines textiles - Google Patents

Dispositif d'alimentation en fils pour machines textiles Download PDF

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Publication number
WO2002002856A2
WO2002002856A2 PCT/DE2001/002367 DE0102367W WO0202856A2 WO 2002002856 A2 WO2002002856 A2 WO 2002002856A2 DE 0102367 W DE0102367 W DE 0102367W WO 0202856 A2 WO0202856 A2 WO 0202856A2
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WO
WIPO (PCT)
Prior art keywords
motor
thread
signal
thread delivery
motors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2001/002367
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German (de)
English (en)
Other versions
WO2002002856A3 (fr
Inventor
Eberhard Leins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Memminger IRO GmbH
Original Assignee
Memminger IRO GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Memminger IRO GmbH filed Critical Memminger IRO GmbH
Priority to AU2001275654A priority Critical patent/AU2001275654A1/en
Publication of WO2002002856A2 publication Critical patent/WO2002002856A2/fr
Publication of WO2002002856A3 publication Critical patent/WO2002002856A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices

Definitions

  • the invention relates to a thread delivery device, in particular for textile machines.
  • Textile machines often require several threads, which are to be fed to the textile machine during the processing operation simultaneously and in a predetermined delivery quantity.
  • the yarn delivery device includes several yarn delivery devices, which on the Circular knitting machine are arranged.
  • Each yarn delivery device has a yarn delivery drum which is held at one end of a vertically oriented and rotatably mounted axis.
  • the upper end of each axle is provided with a pulley.
  • the pulleys are in a common plane and are oriented parallel to each other.
  • a common belt runs over all pulleys and a drive roller as well as a belt tensioner.
  • the drive roller is connected to the drive of the knitting machine and is thus also driven by it. The diameter of the drive roller can be adjusted to set different thread delivery quantities.
  • This thread delivery device generates so-called stand rows when starting the knitting machine and when parking the same, ie sections with stitches that have a different size than in the other knitted fabric.
  • a yarn feeder with several yarn delivery devices and a central electric motor as a drive for them is known.
  • the electric motor is operated at a speed that corresponds to the desired thread delivery quantity.
  • a thread sensor is provided, which has a pivotably mounted lever.
  • the thread supplied by a thread delivery device runs over a thread support element provided at one end of the lever and thus positions the lever against the force of a biasing spring.
  • the other end of the lever is between two electrical switches, so that an excessive deflection of the lever in either direction closes a circuit.
  • this causes the drive motor of the thread delivery devices to accelerate or slow down. While this device can enable an approximately constant thread tension during continuous operation of the knitting machine, it remains difficult to avoid visible changes in the quality of the knitting when starting and stopping the knitting machine.
  • the thread delivery device has at least one drive motor which drives at least one thread delivery wheel, but preferably the thread delivery wheels of several or all of the thread delivery devices.
  • a transmission means such as a belt, which preferably works without slippage, is used to transmit the movement of the motor to the thread delivery wheels of the thread delivery devices.
  • it can be designed as a toothed belt or otherwise be in positive engagement with a pulley provided on the motor and with pulleys which are connected to the thread delivery wheels.
  • the motor is connected to a control device that operates the motor at a desired speed. The speed will again specified by a specification device which receives an input signal which corresponds to the working speed of the textile machine, ie for example the cylinder speed of a circular knitting machine.
  • a gear ratio ie a ratio between the motor speed and the speed of the knitting machine is achieved, which is not constant. Rather, it depends on the machine speed and can increase or decrease with the machine speed. This makes it possible to compensate for thread stretching, thread slip or other factors which depend on the working speed of the knitting machine and influence the stitch size, so that stitches of constant size are formed at different speeds of the knitting machine.
  • the non-proportional or non-linear relationship between the working speed of the textile machine and the engine speed can be such that the transmission ratio (ratio between machine speed and engine speed) increases, decreases or has one or more local minima or maxima with increasing working speed.
  • the non-linear relationship can thus be continuously non-linear or formed by straight line segments adjoining one another with different gradients.
  • the assignment table and / or the calculation rule are preferably parameterized. If, for example, the thread type As a parameter for parameterization, a separate assignment table is stored for each thread type to be processed. Alternatively, the intermediate result supplied by the table or the value for parameterization that goes to the table can be linked to the parameter value in a calculation block. If the speed dependence of the gear ratio is determined by a formula, the thread type is included in the formula as an additional factor.
  • Other parameters that can be used individually or in groups for parameterization are the nominal transmission ratio, the yarn thickness, the stitch size, the temperature of the knitting machine - here in particular the lock temperature - the specific thread friction, the thread elasticity or the desired thread tension.
  • the individual assignment tables or the entire parameterized data record can be stored from the outset in a corresponding storage means of the thread delivery device.
  • an interface for data transmission can be present, for example in the form of a floppy disk drive, a CD-ROM drive or a data connection (network, remote data transmission) to a central data store which is maintained, for example, by the knitting machine manufacturer, the yarn manufacturer or the production plant operator becomes.
  • a central data store which is maintained, for example, by the knitting machine manufacturer, the yarn manufacturer or the production plant operator becomes.
  • it is both possible to view the entire data set i.e. to transfer the entire parameterized table as well as partial data sets, e.g. in the form of yarn-specific tables.
  • the thread delivery device has a computing or assignment device, which generates a control signal for the control device from two input signals.
  • the two input signals are, for example Desired stitch size i (which is determined by the relationship between machine speed or machine working speed and motor speed and other influencing factors) and another signal, such as the thread tension, the lock temperature, the thread type, the thread thickness, the stitch size, the friction, the thread elasticity and, if necessary a time-variable value that changes over time to a neutral value such as one and is triggered when the textile machine starts or stops.
  • Desired stitch size i which is determined by the relationship between machine speed or machine working speed and motor speed and other influencing factors
  • another signal such as the thread tension, the lock temperature, the thread type, the thread thickness, the stitch size, the friction, the thread elasticity and, if necessary a time-variable value that changes over time to a neutral value such as one and is triggered when the textile machine starts or stops.
  • the computing or assignment device can be combined with a non-linear signal transmission block
  • the influence of each of these variables on the stitch sizes can be reduced or eliminated, so that the knitting machine produces knitted fabric with the desired stitch size largely independently of external influences.
  • Different speed ranges can be run through without the mesh size noticeably changing.
  • the formation of rows of stands can be largely prevented.
  • the computing device is preferably formed by a multiplication block which multiplies the signals to be linked together. If necessary, the signals can be routed via a nonlinear characteristic block before multiplication and / or after multiplication. It is particularly advantageous to introduce time-dependent factors.
  • the multiplication block can multiply the signals to be multiplied by a further signal which is derived from the temporal differentiation of a signal which characterizes the engine speed.
  • a signal that is derived from a start / stop of the textile machine For example. After the start of the knitting machine, the time-dependent signal can ramp from zero or another value different from one to one in order to adapt the thread delivery to the thread requirement. In this way, rows of stands can be avoided.
  • a plurality of motors are used to drive at least one yarn delivery device or preferably a plurality of yarn delivery devices.
  • the thread delivery wheels of the thread delivery devices are connected to the motors via a force transmission means such as, for example, a form-fit force-transmitting belt (toothed belt), which are thus positively coupled via the force transmission means.
  • a force transmission means such as, for example, a form-fit force-transmitting belt (toothed belt), which are thus positively coupled via the force transmission means.
  • the required driving torque is thus composed of partial drive torques together, 'which are applied by different engines and introduced at different points of the belt or other forced to clutch transmission agents used in this.
  • the drive torque is introduced into the drive belt in different locations, which makes its driving sections shorter than if the belt were only driven by a motor. As a result, inaccuracies in delivery, that could be caused by elastic belt elongation (elongation).
  • the load changes ie when the textile machine is stopped, the occasion arises that the motors have to brake the running thread delivery device.
  • the load strand and the lost drum ie the areas of the belt that were previously driven or towed by the motor and via which drive torque has been transmitted from the motor to the thread delivery devices, now become belt areas that transmit braking torque, ie the power from the thread delivery devices transferred to the engine.
  • the belt lengths, which have to transmit corresponding forces, are shortened and, accordingly, possible phase changes between the rotation of the thread delivery wheels and the rotation of the drive motors are reduced. This in turn reduces or prevents the at least brief occurrence of stitch size changes when starting or stopping the knitting machine.
  • the motors can be dimensioned smaller than required for individual operation, because fewer power or torque reserves are required for each individual motor. Load peaks of a delivery bike do not have to be applied by its motor alone, but can be taken over by other motors of the group formed in this way.
  • the division of the drive motors of a thread delivery device group into a master motor and one or more slave motors has another advantage. Only the master motor must be provided with a position control and can be controlled in a defined manner with an appropriate control device. The other motors, for example, only receive a current to generate a more or less constant torque that supports the master motor in its work. Cheap switches or controls are sufficient to control the slave motors. In addition, a conflict between interacting drives due to slightly different positioning goals is avoided.
  • the slave motors are preferably dimensioned such that their accumulated, current drive torque is not sufficient to operate the connected thread delivery devices.
  • the master motor which can, for example, provide 40% of the total torque currently required, remains in full control of the movement of the overall system. (The total torque varies depending on the operating state, e.g. breakaway phase, acceleration phase, smooth running, deceleration phase.)
  • the distribution of the drive power to several motors has another advantage, regardless of whether only one or more motors work in a position-controlled manner. Because there are several drive motors, this is distributed Drive power to several drive pinions, which can have a smaller diameter than when the entire drive power is transmitted via a single pinion or a single pulley. Smaller sprockets that run faster, however, have a lower momentum. It is also possible to use smaller motors. By distributing the drive power over several points of engagement on the belt, the belt itself is protected. In addition, you can work with reduced belt tension, which improves the smooth running of the entire belt drive, reduces flexing work on the belt and thus improves efficiency.
  • the thread delivery device has motors, the rotational position and number of revolutions of which is predetermined by the signals which the control device 27 outputs to the motors.
  • the motors can be designed, for example, as servomotors or as stepper motors.
  • the motor control signal is thus decisive for the revolutions made by the motor and thus also for the revolutions of the thread delivery wheel. It is therefore considered advantageous to deliver this to a registration device.
  • a motor position sensor if a motor position sensor is present, its signal can be delivered to the registration device.
  • the registration device serves to count the revolutions of the motor and thus the revolutions of the thread delivery wheel. Counting means both the detection of entire revolutions and, if necessary, the detection of angular steps, ie fractions of a complete revolution.
  • FIG. 2 shows a modified embodiment of a thread delivery device according to the invention, which is controlled by several control signals
  • FIG. 3 shows the thread delivery device according to FIG. 2, in a schematic block diagram
  • FIG. 4 shows a thread delivery device according to the invention with a plurality of motors, in a schematic block diagram
  • 5 shows a thread delivery device with a plurality of thread delivery devices combined into groups and a plurality of drive motors, in a schematic illustration
  • FIG. 6 shows a thread delivery device with a plurality of thread delivery devices combined into groups and a plurality of drive motors, in a schematic illustration
  • FIG. 7 shows a thread delivery device with a plurality of thread delivery devices combined into groups and a plurality of drive motors, in a schematic illustration
  • FIG. 8 shows a thread delivery device with several motors and their control, in a schematic block diagram
  • FIG. 9 shows a modified embodiment of the thread delivery device according to FIG. 8, as a schematic basic circuit diagram
  • FIG. 10 shows a computing device for a thread delivery device, as a block diagram
  • FIG. 11 shows a modified computing device for a thread delivery device, as a block diagram
  • FIG. 12 and FIG. 13 arithmetic blocks for generating a time-dependent signal, in a schematic representation
  • Fig. 14 is a thread delivery device for a textile machine, in side view.
  • a thread delivery device 1 is illustrated, which is used to deliver one or more threads
  • the textile machine 3 has an output 4, to which it emits an electrical signal which characterizes the working speed of the textile machine 3 and thus its thread requirement.
  • the textile machine 3 can be provided with a sensor device which determines the working speed and / or the thread requirement of the textile machine 3 and which generates a corresponding electrical signal.
  • the thread delivery device 1 has at least one thread delivery device 5, to which a thread delivery wheel 6 belongs. This is designed, for example, as a rod cage. Reference is made to FIG. 14 for illustration.
  • the thread delivery device 5, which is designed as a positive feeder, is illustrated separately in this. It has a holder 7 designed as a housing, which has a fastening clamp 8 for mounting and holding the thread delivery device 5 on a corresponding support ring (machine ring) of the textile machine
  • a shaft 8 (FIG. 1), not shown in FIG. 14, is rotatably mounted on and in the holder 7.
  • the shaft 8 carries one or more pulleys 9, 10 at its upper end and the thread feed wheel 6 at its lower end. This is conical on the inlet and outlet sides.
  • the conical taper of the thread delivery wheel 6 is formed by appropriately shaping rods 14 of the rod cage, while on the outlet side a continuous inclined surface 15 is provided, into which the rods 14 are immersed.
  • the thread 2 wraps around the thread delivery wheel 6 several times and is otherwise by thread guide eyelets 16, 17 and guided other thread guide elements.
  • a thread brake 18 with two disc or ring-shaped brake actuators 19 is arranged in order to let the thread reach the thread feed wheel 6 with a defined tension.
  • Arrays 21, 22 are arranged in front of and behind the thread feed wheel 6, which deliver a switch-off signal when the thread is interrupted or sags heavily.
  • a thread tension sensor is not provided.
  • the thread delivery device 5 is driven via the belt pulleys 9 or 10, a sliding clutch plate 23 being used for selection. In the simplest case, however, it is sufficient to provide a single pulley which is firmly connected to the shaft 8.
  • the thread delivery device 5 delivers thread in accordance with the revolutions of the thread delivery wheel ⁇ , the thread tension occurring unregulated.
  • the textile machine 3 is provided with at least one, but preferably a plurality of such thread delivery devices 5, in accordance with the number of threads to be processed 2.
  • the pulleys 9 of the thread delivery devices 5 are designed as toothed belt pulleys, perforated belt pulleys or other slip-free belt drives and are driven by a toothed belt 24. which is in positive engagement with the pulleys 9.
  • the toothed belt 24 drives all thread delivery devices 5 or a subset of thread delivery devices 5. It is guided via at least one drive pinion .25, which is connected to the output of a motor 26.
  • the motor 26 can be operated at a variable speed and is controlled by a control device 27.
  • the control device 27 determines the speed of the motor 26.
  • the control device 27 has an input 29 at which it receives an input signal n a .
  • the input signal n a identifies the speed at which the motor 26 is to be operated, or the current rotational position which the motor has to assume at each point in time. It is supplied by a specification device 31, to the signal output 32 of which the control device 27 is connected.
  • the specification device 21 also has a signal input 33 which is connected to the output 4 of the textile machine 3 via a corresponding line 34. At the signal input, the specification device 31 receives an input signal n s which characterizes the working speed and thus the thread requirement of the textile machine 3.
  • the specification device 31 converts the signal n e into the signal n 3 , the output signal n a not being proportional to the input signal n s at least in some areas and thus not being proportional overall.
  • the ratio of n a to n e represents a transmission ratio ü between the speed of the thread feed wheel 6 and the speed of a corresponding shaft that determines the working speed of the textile machine 3 Circular knitting machine) serve as a benchmark for the working speed of the textile machine.
  • the non-constant transmission ratio ü is achieved, for example, by the .
  • Presetting device 31 has a storage means with a table or list stored therein. Different input signals n e l, ..., n e n can each be assigned an output speed n a l, ..., n a n. The division of the various input speed ranges and thus the grid of the definition Different gear ratios for different input speeds (n a ) can be differently fine in different speed ranges.
  • the thread delivery device 1 presented adjusts its transmission ratio, i.e. the ratio between the speed of the yarn feed wheel and the working speed of the textile machine 3 automatically indicates the working speed of the textile machine 3. For example.
  • the speed of the thread feed wheel 6 can be increased somewhat in order to compensate for thread stretching, thread slip or other disturbing influences.
  • the textile machine 3 is a knitting machine, it can be achieved that the knitting machine generates uniformly large stitches when passing through different speed ranges, as is the case when starting and stopping or as is the case when the working speed of the knitting machine is arbitrarily adjusted. The quality of the knitted fabric is therefore less dependent on the working speed of the knitting machine.
  • the 1 is also provided with a counter Z, the input ZI of which is connected to the output 28 of the control device 27.
  • the motor 26 is designed so that its rotation corresponds exactly to the specifications of the control device 27.
  • the motor M is a stepper motor, a synchronous motor or a similar motor.
  • the registration device Z also has a display device Z2, which displays the revolutions of the motor 26 determined from the control signals.
  • An operating device Z3 in the form of one or more keys serves to influence the display Z2 in a targeted manner, for example to zero.
  • the registration device Z thus shows the revolutions made by the motor 26 or, if the calibration is carried out appropriately, by the thread delivery wheel 6. Alternatively, the supplied thread length can be displayed.
  • the thread delivery device 1 described so far operates as follows:
  • the textile machine 3 In operation, the textile machine 3 emits a signal at its output 4, which characterizes its working speed.
  • the specification device 31 can also have a parameterized table instead of a single table for different transmission ratios.
  • the transmission ratio ü can be constant for all speed ranges, but dependent on another parameter.
  • the transmission ratio ü can also be dependent on the working speed of the textile machine 3, as illustrated in FIG. 1.
  • the data can also be entered using the teach-in process, tables or characteristic curves then being entered or read in, for example, on the basis of individual operating points and the slope of the characteristic curve found in the vicinity of the operating point.
  • the input or reading in of a few operating points between which the specification device 31 then interpolates is sufficient.
  • the parameterization can include further parameters.
  • This can be, for example, the mesh size (desired nominal transmission ratio, the yarn thickness, the thread material, in particular the friction and / or the elasticity of the thread, the thread tension or another size, such as the machine temperature, in particular the temperature of the lock casing While some of the sizes, such as the desired stitch size or the yarn thickness or type of thread, are specified, other parameters can be detected by sensors, such as a thread tension sensor or a temperature sensor.
  • a signal input for the speed n e of the textile machine a signal input for the desired thread tension i, a signal input for a temperature t measured on the textile machine and a signal input R for a ramp signal, ie a signal whose influence gradually increases after it has been triggered disappears.
  • Additional signal inputs can be provided - if necessary, individual signal inputs can also be omitted or connected to a fixed potential.
  • the computing and assignment device 37 and the control device 27 are shown in FIG. 3.
  • the computing and assignment device 37 initially contains, for example, the specification device 31, which determines a specification speed n a from the working speed n a of the textile machine. This can be done by a computing device if the formulaic relationship is known or using simple tables as illustrated in connection with FIG. 1.
  • a multiplication block 41 with an input 42 is connected to the specification device 31. Additional inputs 43, 44, 45 of the multiplication block are connected to the signal inputs 39 of the computing and assignment device 37. For example.
  • the multiplication block thus forms the product of the specified speed n 3f of the desired thread tension i, the existing lock temperature of the knitting machine and a signal R, which is generally one and only briefly assumes a value different from one after the start or stop of the textile machine.
  • the computing and specification device thus issues a signal as a command variable n a • ü • i • t • r, where the gear ratio ü is preferably speed-dependent.
  • This signal is transferred to the control device 27. This is preferably designed as a control device.
  • the motor 26 is connected to a position sensor, for example an incremental sensor 46, which emits a signal corresponding to the angle of rotation of the motor shaft or the speed of the motor shaft.
  • the position sensor can be provided directly on the motor or can interact with the belt, be driven via a belt pulley or be installed in a supplier.
  • the signal is sent to a difference generator 48 via a feedback line 47.
  • the difference formed between the actual signal (detected by the sensor 46) and the desired signal (specified by the computing and assignment device 37) is sent to an amplifier 49, which may also contain integration and / or differentiation elements (PID controller).
  • PID controller integration and / or differentiation elements
  • the registration device Z is connected with its input ZI to the input of the control device 27.
  • the signal present here is a default signal, the control device 27 ensuring that the motor 26 executes the required rotation exactly.
  • the motor 26 can, for example, be a servo motor guided in the context of a control loop or any other motor that is appropriately driven by the control device 27.
  • the signals present at the input of the control device 27 uniquely identify the desired revolutions of the motor 26 and of the thread delivery wheel 6 and are therefore used by the registration device Z to determine the completed number of turns. hung registered.
  • the registration device Z can also be connected to the sensor 46 with its input ZI. This is particularly expedient if the motor 26 is designed as a servomotor and has the sensor 46 anyway.
  • the control device 27 controls at least one motor 26 - in the present case exactly one motor 26.
  • the motors then drive as a group of motors via the then common belt 24 a plurality of thread delivery devices 5.
  • each motor 26, 26a, 26b there can be a separate control device according to FIG. 3 as part of the control device 27.
  • Each motor 26, 26a, 26b executes the rotary movements predetermined by the default signal of the single default device 31 or computing and assignment device 37.
  • each motor 26, 26a, 26b can drive its own group 51, 51a, 51b of thread delivery devices 5.
  • the toothed belt 24 or 24a, 24b is used for this purpose.
  • the thread delivery devices 5 can be divided into any number of identical or different sized groups. Groups of the same size are preferred. Since each motor 26, 26a, 26b only has to drive a few thread delivery devices 5, the belt 24, 24a, 24b in question can be relatively short.
  • the belt elasticity which could lead to delivery errors particularly when accelerating and braking, thus loses influence and when starting and stopping the textile machine, for example a knitting machine, quality changes, such as, for example, temporary Changes in mesh size, minimized or prevented.
  • each group 51, 51a, 51b has exactly one drive motor. This is position-controlled. However, it is also possible to arrange a plurality of motors 26, 52, 26a, 52a, 26b, 52b in each group 51, 51a, 51b. As illustrated in FIG. 7, a continuous belt 24 can also be provided for all thread delivery devices, the belt 24 holding the drive pinions of a plurality of motors 26, 52, 52a, 52b, 52c and u. The motors in both cases (FIG. 6 and FIG. 7) are arranged at the same intervals as possible with respect to the belt length. Each belt 24 or 24a, 24b is thus driven by at least two motors 26, 52. If necessary. As illustrated in FIG.
  • motors 52a, 52b, 52c can be provided.
  • the motors 26, 52, 52a, 52b, 52c are in turn controlled by means of the control device 27 according to FIG. 8. Only the motor 26 is connected to the position controller, as is illustrated in detail in FIG. 3. The motor 26 thus assumes the defined position specified by the position controller at all times.
  • the other motors 52, 52a, 52b do not operate in a position-controlled manner, but only generate a force corresponding to their excitation current. They receive the excitation current via lines 55, which are connected to the control device 27.
  • the control device 27 has, for example, switchable current sources 56, 56a, 56b, etc. for controlling the motors 52, 52a, 52b.
  • the current sources can be connected to and switched by the position controller. For example.
  • motors 52, 52a, etc. can they be designed to deliver a positive current to motors 52, 52a, etc. far when driving torque is required that they provide no current when no driving torque is required and that they receive a negative current when braking torque is to be applied.
  • the motor 26 thus forms a master motor which precisely specifies the rotation of all the pulleys 9 driven by the toothed belt 24.
  • the remaining motors 52, 52a, etc. are slave motors that support the movement of the main or master motor 26 without changing its positioning. They therefore take over part of the drive power without having to regulate yourself.
  • control device 27 for the master motor 26 has the control device according to FIG. 3.
  • the slave motors 52, 52a etc. are not connected to a controller, but to controlled current sources 56, 56a.
  • the current sources are controlled directly by the command signal, which the control device 27 and its controller receive at the input 29 as a control signal.
  • a position-controlled master motor and one or more permanently energized or controlled current-driven slave motors are provided for each thread delivery device group 51 driven by a common belt 24, a position-controlled master motor and one or more permanently energized or controlled current-driven slave motors are provided.
  • FIG. 1 A further embodiment of a computing and allocation device 27 is illustrated in FIG. As before, this contains the multiplication block 42, which the Forms the product of the machine speed n a a desired fixed or depending on n a given gear ratio ü, the desired thread tension i, a temperature t and possibly other quantities in order to generate a command signal i '.
  • the other signals can include a factor G, which depends on the type of yarn.
  • a memory device 61 can be provided which receives a yarn identification number or a yarn name as an input signal and which outputs the corresponding yarn signal G at its output.
  • the storage device 61 can contain corresponding stored tables for this purpose.
  • the memory device 61 is provided for storing machine setting parameters for different products.
  • a code or a product name P serves as the input signal.
  • Each P is assigned a factor p, which is passed on to the multiplication stage M.
  • each product code P can be assigned weighting factors w (w t , w ü , w if w r ) by which the individual signals (ü, i, t, -R) are multiplied before they are multiplied together.
  • the storage device 61 can contain corresponding stored tables for this purpose. This structure can also be used to adapt to different types of yarn - other tables are then used as a basis and the input signal G is used instead of the input signal P.
  • the multiplication block 41 can receive a time-varying signal R which normally has the value 1 and only then temporarily deviates therefrom. gives way when the speed signal n a experiences major changes.
  • the signal R is also referred to as a ramp signal. As illustrated in FIG. 12, it can be obtained, for example, by time differentiation of the speed signal n a .
  • a corresponding block 62 serves this purpose.
  • the signal can be obtained with a block 63, as illustrated in FIG. 13, from a start / stop signal I / O.
  • switch-on or switch-off signal I / O jumps from one signal value to another, which indicates the starting or stopping of the textile machine, the signal r temporarily assumes a value deviating from 1 and then drops again to 1 or rises again to 1 .
  • the increase can be linear, exponential, or different. It should show the time behavior of the thread delivery system. The same applies to waste. This can be used to compensate for settling processes when starting and stopping the textile machine. This measure also serves to reduce or avoid the formation of rows of stands.
  • a thread delivery device 1 for a textile machine 3 has one or more motors 26, 52 which are controlled as a function of a signal derived from the textile machine 3.
  • the motors are preferably controlled as a non-linear function of the command signal n a .
  • further signals are preferably linked to the guide signals n a . If several motors are provided for driving the thread delivery devices 5 with a belt, it is expedient to let the motors interact in groups, only one motor (26) of the group being position-controlled and thus taking the lead as a master motor.
  • the other motors 52, 52a etc. support the master motor by generating a corresponding torque, but follow it accordingly its positioning and thus act as slave motors.
  • Each of the individual measures improves the adaptation of the thread delivery quantity to the actual needs and thus reduces the formation of rows of stands or other quality errors, in particular when the speed of the textile machine 3 changes.
  • the sum of the measures makes it possible to completely avoid rows of stands or the effects of other parameters on the mesh length.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

L'invention concerne un dispositif d'alimentation en fils (1) pour une machine textile (3) présentant un ou plusieurs moteurs (26, 52), commandés en fonction d'un signal dérivé par la machine textile (3). La commande des moteurs s'effectue de préférence en fonction non linéaire du signal de guidage na. En outre, d'autres signaux sont de préférence associés au signal de guidage na. Si plusieurs moteurs sont équipés d'une courroie servant à entraîner des appareils d'alimentation en fils (5), il convient de faire fonctionner ces moteurs en groupe, seul un moteur (26) du groupe étant réglé en position de commande en tant que moteur maître. Les autres moteurs (52, 52a) soutiennent le moteur maître en produisant un couple approprié, suivent cependant ledit moteur en fonction de sa position et interagissent avec lui en tant que moteurs esclaves. Chacune des mesures individuelles permettent de mieux adapter le volume d'alimentation en fils aux besoins quotidiens et de réduire ainsi, en particulier lors du changement de coefficient de torsion de la machine textile, la formation de rangs de mailles de tension différente ou autres défauts de qualité. La somme de ces mesures permet d'éviter tout rang de mailles de tension différente ou toute rétroaction d'autres paramètres sur les longueurs des mailles.
PCT/DE2001/002367 2000-07-05 2001-06-27 Dispositif d'alimentation en fils pour machines textiles Ceased WO2002002856A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001275654A AU2001275654A1 (en) 2000-07-05 2001-06-27 Thread feed device for textile machines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000132705 DE10032705B4 (de) 2000-07-05 2000-07-05 Fadenliefereinrichtung für Textilmaschinen
DE10032705.2 2000-07-05

Publications (2)

Publication Number Publication Date
WO2002002856A2 true WO2002002856A2 (fr) 2002-01-10
WO2002002856A3 WO2002002856A3 (fr) 2002-06-27

Family

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PCT/DE2001/002367 Ceased WO2002002856A2 (fr) 2000-07-05 2001-06-27 Dispositif d'alimentation en fils pour machines textiles

Country Status (3)

Country Link
AU (1) AU2001275654A1 (fr)
DE (1) DE10032705B4 (fr)
WO (1) WO2002002856A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004058920A1 (de) * 2004-12-07 2006-06-14 Memminger-Iro Gmbh Rundstrickmaschine und Elektromotor
EP1837427A4 (fr) * 2004-12-16 2009-11-25 Shima Seiki Mfg Appareil d'alimentation de fil d'une tricoteuse a mailles cueillies
EP2080724A3 (fr) * 2008-01-17 2010-03-17 B.T.S.R. International S.p.A. Système pour le contrôle de l'alimentation en fil ou câble d'une machine et procédé correspondant
CN102884234A (zh) * 2010-05-18 2013-01-16 B.T.S.R.国际股份公司 用于以恒定的张力和速度向加工机供给纱或线的改进方法和设备
CN107407022A (zh) * 2015-03-12 2017-11-28 Btsr国际股份公司 用于根据纺织机器的操作步骤来管理和控制至少一根线向纺织机器的给送的方法和系统
CN110777231A (zh) * 2019-11-22 2020-02-11 龙南龙钇重稀土科技股份有限公司 一种真空炉喂线装置
CN116732280A (zh) * 2023-07-14 2023-09-12 禹州市恒利来新材料股份有限公司 一种包芯线用智能喂线设备

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IT1083113B (it) * 1977-05-18 1985-05-21 Marchisio Giovanni & C S A S Macchina circolare per maglieria con dispositivo di regolazione della velocita di alimentazione dei fili
DE3729297C1 (de) * 1987-09-02 1989-03-02 Gustav Memminger Vorrichtung zur UEberwachung der Fadenlieferung bei einer Fadenliefervorrichtung fuer Textilmaschinen
DE3827453C1 (fr) * 1988-08-12 1989-10-12 Hubert 5653 Leichlingen De Geueke
DE3832381C1 (en) * 1988-09-23 1989-12-28 Gustav 7290 Freudenstadt De Memminger Thread-delivery device
SE508469C2 (sv) * 1993-04-21 1998-10-12 Sipra Patent Beteiligung Garnmataranordning i en textilmaskin samt förfarande för användning av garnmataranordning
DE19537325C1 (de) * 1995-10-06 1996-11-28 Memminger Iro Gmbh Fadenliefergerät mit elektronischer Ansteuerung
DE19733263A1 (de) * 1997-08-01 1999-02-04 Sipra Patent Beteiligung Fadenliefervorrichtung an einer Textilmaschine und Bandspannvorrichtung dafür
DE19801643A1 (de) * 1998-01-17 1999-07-22 Stoll & Co H Verfahren zur Herstellung eines Gestricks auf einer Flachstrickmaschine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004058920A1 (de) * 2004-12-07 2006-06-14 Memminger-Iro Gmbh Rundstrickmaschine und Elektromotor
DE102004058920B4 (de) * 2004-12-07 2007-01-11 Memminger-Iro Gmbh Rundstrickmaschine und Elektromotor
US7490488B2 (en) 2004-12-07 2009-02-17 Memminger-Iro Gmbh Circular knitting machine and electric motor
EP1837427A4 (fr) * 2004-12-16 2009-11-25 Shima Seiki Mfg Appareil d'alimentation de fil d'une tricoteuse a mailles cueillies
EP2080724A3 (fr) * 2008-01-17 2010-03-17 B.T.S.R. International S.p.A. Système pour le contrôle de l'alimentation en fil ou câble d'une machine et procédé correspondant
CN102884234A (zh) * 2010-05-18 2013-01-16 B.T.S.R.国际股份公司 用于以恒定的张力和速度向加工机供给纱或线的改进方法和设备
CN102884234B (zh) * 2010-05-18 2014-10-29 Btsr国际股份公司 用于以恒定的张力和速度向加工机供给纱或线的改进方法和设备
US9181064B2 (en) 2010-05-18 2015-11-10 Btsr International S.P.A. Method and device for feeding a yarn or thread to a processing machine with constant tension and velocity
CN107407022A (zh) * 2015-03-12 2017-11-28 Btsr国际股份公司 用于根据纺织机器的操作步骤来管理和控制至少一根线向纺织机器的给送的方法和系统
CN107407022B (zh) * 2015-03-12 2020-10-16 Btsr国际股份公司 用于管理和控制线向纺织机器的给送的方法和系统
CN110777231A (zh) * 2019-11-22 2020-02-11 龙南龙钇重稀土科技股份有限公司 一种真空炉喂线装置
CN116732280A (zh) * 2023-07-14 2023-09-12 禹州市恒利来新材料股份有限公司 一种包芯线用智能喂线设备

Also Published As

Publication number Publication date
WO2002002856A3 (fr) 2002-06-27
DE10032705A1 (de) 2002-01-17
DE10032705B4 (de) 2006-11-16
AU2001275654A1 (en) 2002-01-14

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