DE102017221224B3 - Device and method for producing tissue with a loom and two Jacquard machines - Google Patents

Abstract

The invention relates to a device for producing tissue with a weaving machine (5) and with two jigging machines (10, 15) formed shedding machines, both of which each have a harness. The device according to the invention is characterized in particular by a controller (3) which is designed such that it is capable of controlling the starting of the weaving machine (5) and the two jacquard machines (10, 15) as follows:
- The two jacquard machines (10, 15) are started at a user-specified speed n _Sync , where n _sync specifies the speed specification on reaching the synchronicity between loom (5) and the two Jacquard machines (10, 15),
the weaving machine (5) is accelerated to n _sync at its start within a weaving cycle,
- The start of the two Jacquard machines (10, 15) is timed to the start of the weaving machine (5) is related in such a way that at a time t ₁ to which the weaving machine (5) predetermined speed n _W 20% of the speed specification n _sync reaches the two Jacquard machines (10, 15) each predetermined speed n _J1 , n _J2 each reaches at least 60% of the speed specification n _sync , and
- The two Jacquard machines (10, 15) are synchronized with each other from a time t ₂ , wherein the time t _{2 is} not later than the time of the onset of weaving professional movement through at least one of the two Jacquard machines (10, 15), said Inserting the tray movement completed in the previous start course open shed this at least one jacquard machine (10, 15) finished.
The invention also relates to a corresponding method.

Description

The invention relates to a device and a method for producing tissue according to the preambles of the independent claims.

From the prior art, for example in the field of carpet weaving, facilities with a loom and two jacquards are known, the weaving machine and each of the two Jacquard machines each having a drive. Such a device with two LX 2493 Jacquard machines preceding a weaving machine has been shown, for example, by Stäubli at the ITMA 2015 trade fair in Milan. This device represents the closest prior art according to the preamble of the independent claims, from which the present invention proceeds. The two Jacquard machines, which are known to be provided with corresponding harnesses for the Kettfadenführung are arranged in the warp direction one behind the other and both contribute to the patterning of the fabric. As a rule, the rear jacquard machine must allow a larger compartment stroke due to its placement. The known devices start and stop synchronously with respect to the aforementioned drives and require due to the high Harnischkräfte a strong control intervention by the drives of Jacquard machines, which in turn requires their correspondingly large design and / or complex liquid cooling.

In these known devices, a controller is provided which is designed to control the starting, running and stopping of the loom and the two Jacquard machines. Furthermore, the device has in each case a power electronic actuator for the respective speed control of the drive of the loom and the drives of the two Jacquard machines.

It is also known from the DE 200 21 049 U1 and eg from there 2 a device comprising a weaving machine and a shedding machine, wherein the shedding machine or its drive unit is equipped with an additional flywheel mass to limit the extent of the speed oscillations or their negative effects on the machine components.

Furthermore, from the prior art, for example from the DE 100 53 079 C1 and the DE 102 36 095 B3 A method for asynchronously starting and stopping a device is known, wherein the device comprises a weaving machine and a shedding machine (for example a dobby or a jacquard machine), each with an electromotive drive. The solutions described in the documents mentioned aim at the most gentle and reliable starting of the device.

If a second jacquard machine is added, a component relevant to the power requirement is added. This applies in particular to the start and the stopping phase when both the one and the other jacquard machine (for example in the LX type from Stäubli or in the SI type from Bonas Textile Machinery NV) has to be accelerated or decelerated. The high kinetic energy to be communicated in the start phase or again in the shutdown phase, depending on the operating speed, requires that the feeding network or power electronic assemblies for operating the device not be overloaded and, on the other hand, a high fabric quality, especially in terms of Avoiding contact points, is guaranteed. At the same time, however, conditions should be created which permit a weaving operation even at comparatively high operating speeds (approximately from 350 shots / min) with moderately dimensioned drives (motors) for jacquard machines or waiving liquid cooling. The invention sets itself the task for this purpose to provide an appropriate solution.

This object is achieved by the features of the independent claims.

Within the scope and meaning of the present invention, a "weaving cycle" is understood to mean the period in which a real or virtual wave covers a full 360 ° revolution from one stop of the reed to the next. Furthermore, it is agreed that all speeds are given in weft / min, so refer to a 1: 1 wave. The term "weaving cycle" is also used in the same meaning outside the period of weaving and independently of a movement of the reed, ie in particular when starting and stopping the device. In this case, a "weaving cycle" also corresponds to a complete 360 ° revolution of a real or virtual wave. Likewise, it is determined for the scope of the present invention that all speeds recited hereinabove setpoints, i. Default values or predetermined speeds, are.

The weaving machine is known to be designed for the reversing movement of the reed as well as for the weft transport through the weft insertion means. The weft insertion means may be air nozzles or grippers, for example. In the context and meaning of the present invention, moreover, the respective harness is part of the respective jacquard machine.

According to the invention, the drives of the two Jacquard machines are operatively connected, each with an additional flywheel, ie both the one and the other Jacquard machine or their respective drive unit are each equipped with an additional flywheel so that starting these two Jacquard machines, starting from their standstill, to the maximum permissible operating speed issued by the manufacturer, takes at least two weaving cycles. In other words, the additional flywheels operatively connected to the drives of the Jacquard machines are selected according to this manufacturer's instructions. The term "operatively connected" here means that the corresponding additional flywheel is fixed in a suitable manner to one or more elements of the drive train.

It should be noted that the term "additional flywheel" also includes the case that it consists of several partial flywheels, which together form the said additional flywheel mass.

According to the invention, the controller takes over the starting, weaving and stopping the weaving machine and the two jacquard machines described below, wherein the respective harness of the jacquard machines occupies an open shed position during start-up, ie at the start time itself or during the startup procedure. The two Jacquard machines are in front of the loom on a user-specified speed _Sync started. Here are _Sync the user-side speed specification on reaching the synchronicity between loom and the two Jacquard machines. The period until reaching _Sync The two jacquard machines may be more or less than two weaving cycles (the above-mentioned condition of starting for at least two weaving cycles refers to the respective maximum speed specified by the manufacturer). The weaving machine, on the other hand, starts up within only one weaving cycle when it starts up _Sync accelerated.

Furthermore, according to the invention, the starting of the two jacquard machines is set in relation to the starting of the weaving machine in such a way that their predetermined speed n _J1 respectively. n _J2 at a time t ₁ in each case at least 60% of said operator-specified speed specification _Sync has reached. Point of time t ₁ This indicates the time at which the loom the predetermined speed n _w 20% of _Sync reached.

Preferably, the predetermined speed n _J1 . n _J2 the two Jacquard machines at the said time t ₁ at which the loom a speed n _w 20% of _Sync achieved, at least 70%, more preferably even at least 80% of _Sync ,

The two Jacquard machines will continue according to the invention with each other from a time t ₂ synchronized, with the latest value of t ₂ coincides with the first Webbetriebsmäßigen insertion of the compartment movement by at least one of the two jacquard machines, this insertion of the compartment movement terminates the trained for the previous start course open position of this jacquard machine.

The electronic control which controls the starting (as well as the weaving operation as well as the stopping) of the device can be designed as a central controller. Such a central control can be arranged, for example, in the weaving machine and output all control commands both to the drive and to the drives of the two jacquard machines (the latter possibly via controls provided in the jacquard machines).

According to an alternative, it is readily possible for the control designed according to the invention to be designed and arranged in a decentralized manner, in particular distributed to the weaving machine and one or both jacquard machines, whereby these partial controls divide the control tasks and preferably communicate with one another accordingly. It is also conceivable that a central control, which is assigned neither to the loom nor the two Jacquard machines locally, is provided, for example in a higher-level control, which may also be responsible for other weaving devices.

The device according to the invention achieves a gentle starting (and advantageously also stopping, see below) of the device. Likewise, the additional flywheels allow a significant reduction in the controller operation in weaving operation, so that the drives of the Jacquard machines can be made smaller or manage without liquid cooling.

In a preferred embodiment for starting the two jacquard machines, the controller controls such that-according to a first alternative-the two jacquard machines start synchronously with one another. In the case of different drive torques and / or different moments of inertia of the two Jacquard machines, e.g. Due to different sized additional flywheels, the speed gradient - at least in its maximum limit - preferably depends on the machine with the lower maximum starting dynamics. In this way, it is ensured that synchronous operation of the two Jacquard machines can already be achieved at the start.

According to a second alternative, a staggered start takes place in which the two jacquard machines are started in succession. Again, it is advantageous that at different drive and / or mass moments of inertia, the jacquard machine with the lower maximum starting dynamics first starts the starting process.

A particularly preferred starting variant in this respect provides that the jacquard machine already has the predetermined speed _Sync reached when the second Jacquard machine starts. In this way the loads of the supply network are reduced, which is advantageous in certain production regions.

Both in the case of synchronous and staggered, in particular a start of the two Jacquard machines as described above, a preferred embodiment is that the weaving machine is only started when both jacquard already the predetermined speed _Sync achieved. A preferred variant in this regard provides that one of the two Jacquard machines is first started and set to the predetermined speed _Sync is started up, then the other Jacquard machine started and also on the vorgebebene speed _Sync is raised, and only then started the loom and the vorgebebene speed _Sync is raised.

The design of the entire starting process is preferably automatic, i. automatically, with reference to supply network-side and / or machine and / or applicative characteristics determined by the controller. However, the operator preferably obtains the basic possibility of selecting between a synchronous or a staggered start of the jacquard machines. Applicative characteristics, which are used by the controller in an independent design of the starting process, for example, be different Kettfadenmaterialien per Harnisch or the current binding to the last registered weft. To avoid contact points, it may make sense to provide for one of the two Jacquard machines a shorter start (and thus open shed phase); this then starts in the start-staggering described above as the second and holds in a particularly preferred embodiment until their start or start their starting position their harness and thus their warp threads in the subject equalization.

Especially in the event that in the course of a new application decision-relevant criteria for the design of the starting process are added, which the controller (yet) are not known, it is also possible in a preferred embodiment the operator in a staggered start of Jacquard machines to determine which of the two Jacquard machines should start first.

In order to achieve the highest speeds, it may be advantageous in the warp direction successively arranged Jacquard machines to provide for the rear jacquard another shed profile (jacquard profile), which then preferably "softer", i. with a shorter shelf life. In a preferred embodiment, the rear jacquard machine (or its drive unit) is equipped with a larger additional flywheel mass than the front jacquard machine or its drive unit. In this way, shed-profile-related differences in shedding behavior can at least partially compensate, because due to the larger additional flywheel speed of the rear jacquard machine does not yield even during the high load peaks during shed change, thereby related temporal shortening effects for the open compartment are virtually eliminated.

In order not to overload the electronic modules and a possibly used braking resistor even when stopping the device according to the invention and to ensure the best possible fabric quality, it is preferably provided to put the shutdown of the two Jacquard machines to the weaving machine also in relation. In this case, it is preferred that the speeds given to the jacquard machines n _J1 respectively. n _J2 at a time t ₁₂ in each case at least 60% of that speed specification n ₁₀ amount to the time t ₁₀ the resolution of the synchronicity between on the one hand the loom and on the other hand the two Jacquard machines is assigned. Point of time t ₁₂ This indicates the time at which the loom specified speed of the loom n _w in turn 20% of n ₁₀ below.

Preferably, the predetermined speeds are n _J1 . n _J2 the two Jacquard machines at the said time t ₁₂ on which the loom the speed n _w 20% of n ₁₀ falls below, at least still 70%, more preferably even still at least 80% of n ₁₀₊

Furthermore, the controller is preferably designed such that at the latest from a time t ₁₁ , which coincides with the webbetriebsmäßig terminate the compartment movement by both or the last of the two jacquard machines, the shutdown of the two Jacquard machines is continued in an open shed position. This open position takes the respective jacquard machine preferably already at the end of their professional movement after Webbetriebsende and is advantageously until reaching standstill of respective Jacquard machine or both Jacquard machines maintained.

In a preferred embodiment, the two jacquard machines with each other, by control command (s) of the controller, until the time t ₁₂ synchronized led.

According to one embodiment of the invention, at least one further Jacquard machine is provided in addition to the two said jacquard machines, which also has its own drive and is operatively connected to at least one additional flywheel. This at least one further Jacquard machine is controlled by the controller according to the two said Jacquard machines. The starting and preferably also the stopping takes place accordingly with the same relations with respect to the control of the weaving machine.

The invention further relates to a method for producing tissue with a weaving machine and with two trained as Jacquard machines tray imaging machines according to the independent method claim. To avoid repetition, reference is made to the above statements on the design of the controller for carrying out the corresponding method steps.

With regard to the method according to the invention, it is advantageous that with an increase in the operating speed at which to start or, from which to brake or shut down, the minimum specifications for the speeds n _J1 . n _J2 the Jacquard machines at the time t ₁ during startup and at the time t ₁₂ be changed during shutdown to above 60% of _Sync , preferably above 70% and more preferably above 80% of _Sync , for starting or n ₁₀ for stopping.

It is preferred that the operator make the basic choice between a synchronous or staggered launch of the jacquard machines. In a staggered start of the jacquard machines, the operator can preferably determine which of the two jacquards first starts.

It has been found that the method is particularly advantageous when it is used in cases where a speed must be reached for the first sheet stop, which is above a specified threshold. At this threshold or a speed below, however, the weaving machine and the two Jacquard machines can be started and stopped synchronously. The corresponding threshold value is preferably 300 rounds / min.

Advantageous developments of the invention are characterized by the features of the subclaims.

• 1 eine schematische Darstellung des generellen Aufbaus einer erfindungsgemäßen Einrichtung;
• 2 einen Drehzahlverlauf einer Webmaschine und zweier Jacquardmaschinen gemäß einer ersten Ausführungsform, und
• 3 einen Drehzahlverlauf einer Webmaschine und zweier Jacquardmaschinen gemäß einer zweiten Ausführungsform.

The invention will be explained in more detail below with reference to two exemplary embodiments. Show it:

• 1 a schematic representation of the general structure of a device according to the invention;
• 2 a speed profile of a loom and two Jacquard machines according to a first embodiment, and
• 3 a speed curve of a loom and two Jacquard machines according to a second embodiment.

1 represents a very schematic structure of an inventive device 1 This includes a loom 5 , which is an electromotive drive 6 assigned. Furthermore, the device includes 1 two Jacquard machines 10 . 15 each with a harness (not shown), the two Jacquard machines each also a drive 11 respectively. 16 assigned. Each of the two drives 11 . 16 The two Jacquard machines comes with an additional flywheel 12 respectively. 17 operatively connected, with each of the additional flywheels 12 . 17 can be divided into several partial flywheel masses. The only extremely schematically indicated additional flywheels 12 . 17 may be suitably fixed to one or more elements of the drive train. They serve to even out the run of the Jacquard machines 10 . 15 In particular, to limit the extent of the speed oscillations or their negative effects on the machine components.

The device according to the invention also has a controller 3 on which the starting, the operation and the shutdown of the loom 5 and the two Jacquard machines 10 . 15 controls, in particular the timing of their respective speeds in relation to each other, as described below. The control 3 can be centralized or decentralized. It can, for example, also within the loom 5 be arranged and the two Jacquard machines 10 . 15 control or control. Likewise, the control tasks of the controller 3 also be split on the existing controls of the loom 5 and the Jacquard machines 10 . 15 ,

Furthermore, that of the weaving machine 5 associated drive 6 as well as the two Jacquard machines 10 . 15 associated drives 11 . 16 each a power electronic actuator 8th . 13 . 18 assigned to the speed control, as is known from the prior art. These actuators 8th . 13 . 18 can communicate with each other via a DC link be connected (not shown), in particular for energy recovery during braking of the machines 5 . 10 . 15 makes sense, as also known from the prior art.

Furthermore, signal transmission means 9 . 14 . 19 between each of the actuators 8th . 13 . 18 and the controller 3 present to the signals from the controller 3 to the actuators 8th . 13 . 18 transferred to. Also, signal transmission means (not shown) may be directly between the actuators 8th . 13 . 18 be provided.

The 2 and 3 show various possible speed curves for starting, weaving and stopping a device according to the invention 1 , The illustrated speed curves are always the default values, ie setpoints. They are idealized as linear, ie represented during ramping up and down as ramp-like courses, ie the practiced in the prior art partly modified course due to variable moments of inertia is not taken into account or back out. The unit used is shot / min, with one shot taken per weaving cycle. Thus, the unit shot / min is equivalent to RPM.

The additional flywheels 12 . 17 are so on the respective Jacquard machine 10 . 15 tuned that starting the respective jacquard machine 10 . 15 - From their standstill - At least two weaving cycles takes to the manufacturer specified respective maximum speed. The actual duration for starting up the two Jacquard machines 10 . 15 depends, in particular, on the actual operating speed, which is preferably predetermined by the operator, which is regularly smaller than the maximum speed specified by the manufacturer.

To start the device according to the invention 1 begins according to the illustrated first embodiment at the time t _J1.1 the one jacquard machine 10 respectively. 15 their start. It is referred to in this embodiment as the "first jacquard machine". Time offset, eg by 100 ms, starts at one time t _J2.1 the other jacquard machine 15 respectively. 10 their start. This is referred to in this embodiment as a "second" Jacquard machine. The acceleration, ie the speed gradient, until the time t ₁ for both Jacquard machines 10 . 15 each by mathematical consideration of the maximum torque M _max of the motor operated on the power electronic actuator, minus a share to cover the losses and a certain control reserve (eg 15% of M _max ) and the total moment of inertia (in particular engine rotor, additional flywheel mass, Jacquard machine, fasteners flow), with conversion to the above-mentioned 1: 1 wave determined. With regard to the mass moment of inertia, an arithmetic mean formed over a jacquard-geared period is expediently used. According to an alternative, instead of this arithmetic mean value, the energetic mean value approaching reality can also be used, as described for example in US Pat DE 10 2015 102 029 A1 is disclosed.

At the time t _W.1 then begins the loom 5 to start, with their predetermined speed n _W by appropriate control of the drive 6 by means of the controller 3 within a weaving cycle _Sync is raised. At the point t ₁ cuts her speed n _W the level of 0.2 · n _sync (ie 20% of _Sync ), in which _Sync that speed is what both the weaving machine 5 as well as the two Jacquard machines 10 . 15 at the synchronization time t _Sync to reach. According to the invention, the speeds n _J1 . n _J2 the two Jacquard machines 10 . 15 at the time t ₁ at least 60% of _Sync (ie 0.6 · n _sync ). In the present embodiment even an even stricter scale is applied: the speeds n _J1 . n _J2 the two Jacquard machines 10 . 15 should at the time t ₁ at least 80% of _Sync (ie 0.8 n _Sync ).

Will this speed _Sync of 80% according to the present embodiment of one or both Jacquard machines 10 . 15 not reached, so must for the jacquard machine concerned 10 respectively. 15 the start time is set to an earlier date. This may be necessary in particular when the target speed of 80% of _Sync at the time t ₁ not reaching jacquard machine 10 respectively. 15 has a lower maximum starting dynamics than the other Jacquard machine 15 respectively. 10 (if it reaches the said 80%).

According to the above, the invention provides for the to be determined in the run-up to starting startup characteristics - in addition to the above-mentioned gradient or acceleration determination for the speed default - a substantial execution specification for the laying of the times t _J1.1 . t _J2.1 of the start. With this inventive measure, according to the task, an effective means for reducing the load on the grid and power electronics is found by the drives that start up 6 . 11 . 16 caused power peaks separated from each other, so be limited in their sum - without compromising the weaving technique important starting dynamics of the loom 5 to have to make. This starting dynamics is necessary in particular to avoid contact points.

The control 3 In this case, it is preferably designed such that it initiates the starting process of the loom 5 and the Jacquard machines 10 . 15 automatically controlled by including supply network and / or machine and / or applicative characteristics. Applicative characteristics here are, for example, different warp thread materials per harness or the current binding around the last inserted weft thread.

Above the speed-time diagram is - on the same time base - symbolically shown the shed course in a known manner. It is assumed for this embodiment, the assumption that both Jacquard machines 10 . 15 be operated with the same shed angle and this is at 0 ° (or 360 °) loom angle, so coincides with the reed fence. The two horizontal parallel lines left and right of the shed change symbolize the shed open position of both Jacquard machines 10 . 15 , In the present case are the sheds of the two Jacquard machines 10 . 15 already at the time of her start in the open position. In the (first) period c, the two sheds of the two Jacquard machines close 10 . 15 while they reopen in period a. In the period b stand the two subjects in the open subject position and it will be a weft in the jacquard machines 10 . 15 Trained shed entered. After closing the two sheds, the sheet stop occurs in the next period c. A complete weave cycle includes a period of time a (starting at 0 °), a subsequent period b and ends at the end of the period c. This sequence is repeated until the two Jacquard machines are paused during the shutdown of the device (see below) 10 . 15 again occupy a permanent open subject.

At a time t ₂ The two Jacquard machines 10 . 15 reach in open subject and at the earliest the professional movement of at least one jacquard machine 10 respectively. 15 and preferably both Jacquard machines 10 . 15 starts, the two jacquards are 10 . 15 synchronized led. Synchronized led in the context of the invention means that t ₂ up to t _Sync between the two Jacquard machines 10 . 15 in amount no greater than 5 ° angular deviation is allowed than for t _Sync agreed (in this example, it is at t _Sync 0 °, since both Jacquard machines 10 . 15 be operated in the present embodiment with the same shed angle. The deviation of 5 ° was chosen here, in particular different Harnischlasten the two Jacquard machines 10 . 15 to take into account.

From t _Sync become the loom 5 and the two Jacquard machines 10 . 15 synchronously guided. Here are expressly the (not shown) dynamic adjustments of the Fachschlusswinkel for one or both Jacquard machines 10 . 15 included in the current weaving, ie the relevant temporary speed or angle deviations do not violate the concept of synchronicity in the context of this invention.

Again 2 can be seen, reaches the predetermined speed n _J1 , n _J2 the two Jacquard machines 10 . 15 by controlling the controller 3 the specified speed _Sync present over a period of more than two weaving cycles (note: the corresponding requirement of the duration of the start of Jacquard machines 10 . 15 according to the independent claims, however, refers to the manufacturer specified maximum operating speed). The control 3 on the other hand controls the weaving machine 5 such that the predetermined speed n _W the loom 5 the specified speed _Sync achieved in less than one weaving cycle.

In the example according to the 2 is the specified speed _Sync also for a while the operating speed until this by the controller 3 to the new preset operating speed n ₁₀ is changed.

For example, due to a hand stop or a detected weft break is according to the embodiment of the 2 from one point in time t ₁₀ the shutdown of the device 1 initiated. This is the example of 2 synonymous with the immediate cancellation of synchronicity between the loom 5 on the one hand and the two Jacquard machines 10 . 15 on the other hand. A preferred embodiment is that the two Jacquard machines 10 . 15 with each other until the time t ₁₁ , to which the last change of subject has been completed and thus the weaving operation has ended, be synchronized. Synchronized led here means that from t ₁₀ up to t ₁₁ between the two Jacquard machines 10 . 15 In terms of amount, no greater angular deviation than 5 ° is allowed than for t ₁₀ agreed. In the example, the synchronized operation of the two Jacquard machines 10 . 15 beyond that until the time t ₁₂ continued. There are t ₁₂ the time at which the weaving machine 5 given speed in turn 20% of the operating speed n ₁₀ below.

From that date t ₁₁ become the two Jacquard machines 10 . 15 according to the 2 continued in the open subject. This open position is advantageously until it reaches the standstill of the jacquard machine or both jacquards 10 . 15 maintained.

According to the invention, the speeds of the two Jacquard machines 10 . 15 at the time t ₁₂ at least 60% of n ₁₀ (ie 0.6 · n ₁₀ ). In the present embodiment, an even harder requirement is raised: The speeds of the two Jacquard machines 10 . 15 should at the time t ₁₂ still at least 80% of n ₁₀ (ie 0.8 · n ₁₀ ). If this is not the case, then it must be for the jacquard machine concerned 5 respectively. 10 the speed gradient of t ₁₀ up to t ₁₂ be reduced according to the amount. Here, the invention provides an essential execution specification for setting the times for the shutdown characteristics to be determined in advance of the actual shutdown t _J1.2 . t _J2.2 of the shutdown completion.

For the speed gradient from t ₁₂ up to the achieved standstill t _J1.2 . t _J2.2 is for each of the two Jacquard machines 10 . 15 the torque and moment of inertia are taken into account, as described above for the start. However, now the losses can be considered as torque assisting. That way you can t _J1.2 respectively. t _J2.2 determine.

By means of the innovative solution become the performance tips of the three considered drives 6 . 11 . 16 (a drive 6 for the loom 5 , one drive each 11 . 16 for the two Jacquard machines 10 . 15 ) so far separated that on the one hand the power electronics (and possibly provided braking resistor) is not overloaded with the energy fed back, but the loom 5 on the other hand highly dynamic within a cycle until the time t _W.2 can be shut down, what Webtechnisch (especially in terms of the focal point problem) is important.

In an embodiment not shown, the two Jacquard machines start 10 . 15 at the same time. It is advantageous if, in the case of different maximum starting dynamics of the two Jacquard machines 10 . 15 the common speed gradient - at least in its maximum limit - after the jacquard machine 5 respectively. 10 with the lower maximum starting dynamics.

3 shows a second embodiment according to the invention for starting and stopping the device according to the invention 1 , which is particularly suitable for weak supply networks, such as those with high so-called equivalent impedance and / or temporally overlapping switching operations on other large consumers, is suitable. The terms used correspond in their meaning to those in 2 , so that is waived on appropriate repetitions.

The times t _J1.1 . t _J2.1 for the start of the first and the second jacquard machine are so far apart that the first jacquard machine 10 respectively. 15 - after her start at the time t _J1.1 - at the time t _J2.1 already the full speed _Sync has reached. The times t. _J2.1 and t _W.1 for the start of the second jacquard machine 15 respectively. 10 and the loom 5 are in turn so far apart that the second jacquard machine 15 respectively. 10 - after her start at the time t _J2.1 - at the time t _W.1 already the full speed _Sync has reached. In the present case, the start of the loom fall 5 at the time t _W.1 and the time t ₂ synchronous operation of the two Jacquard machines 10 . 15 together. The loom also starts in this embodiment within a cycle _Sync ,

According to the foregoing, in accordance with the invention at the time t ₁ to which the weaving machine 5 specified speed n _W 20% of _Sync reached the two Jacquard machines 10 . 15 predetermined speeds n _J1 . n _J2 at least 60% and preferably at least 80% (s. 3 ) of the speed specification _Sync in fact, even 100% in the present case.

For the sensible definition of the speed gradient, ie the acceleration, of the first jacquard machine 10 respectively. 15 This is true in the description too 2 Said analogously. Also for the sensible determination of the speed gradient of the second jacquard machine 15 respectively. 10 be on the comments too 2 directed.

The advantage of the embodiment of the start according to the embodiment of 3 is that the acceleration phases of all three machines 5 . 10 . 15 (first and second jacquard machine 10 . 15 , Loom 5 ) are completely separated from each other, so add up the corresponding power peaks neither completely nor partially. Thus, even with weak supply networks good conditions are given that the voltage does not break inadmissible.

In the further weaving operation remains the three drives 6 . 11 . 16 common speed constant, so that - in contrast to the embodiment of the 2 - here n ₁₀ = _Sync applies until, for example, due to a hand stop or a detected weft break from a time t ₁₀ the shutdown is initiated, which in the example is synonymous with the immediate cancellation of the synchrony between the loom 5 on the one hand and the two Jacquard machines 10 . 15 on the other hand. While keeping both Jacquard machines 10 . 15 present as long as the speed n ₁₀ at, by the time t _W.2 the shutdown of the loom 5 is completed. Only from this point in time do the two Jacquard machines begin 10 . 15 their own shutdown and close it according to the present embodiment at the same time t _J1.2 respectively. t _J2.2 from. This graduation is particularly advantageous in order not to overload a power electronics and a possibly existing braking resistor with respect to the maximum recovery power.

If the named staggering is not sufficient enough to limit the maximum of the regenerative power to a required level, it is also possible to use the Jacquard machines 10 . 15 also staggered among each other staggered - eg "mirror image" in the 3 illustrated startup process.

According to the foregoing, it is in accordance with the invention at the time t ₁₂ to which the weaving machine 5 specified speed n _W 20% of n _sync = n ₁₀ reached the two jacquard machines 10 . 15 predetermined speeds n _J1 . n _J2 at least 60% and preferably at least 80% (s. 3 ) of the speed specification _Sync - in the present case, actually even at 100%.

The invention has been described with reference to two embodiments, but is not limited to these. So it is possible, for example, that the weaving machine 5 not just two or more Jacquard machines 10 . 15 are associated, but also in addition a dobby, which in addition to the Jacquard machines 10 . 15 contributes to shedding education. The shafts can in this case of the drive of the loom 5 are driven.

LIST OF REFERENCE NUMBERS

1

Facility

3

control

5

loom

6

drive

8th

actuator

9

Signal transmission means

10

Jacquard

11

drive

12

Additional flywheel

13

actuator

14

Signal transmission means

15

Jacquard

16

drive

17

Additional flywheel

18

actuator

19

Signal transmission means

Claims (19)

Device for producing tissue with a weaving machine (5) and with two shed forming machines designed as jacquard machines (10, 15), both of which each have a harness, with a controller (3) for controlling the starting, operating and stopping of the loom (5) and the two Jacquard machines (10, 15), with one of the weaving machine (5) associated electromotive drive (6) and each one of the respective Jacquard machine (10, 15) associated electromotive drive (11, 16), and each having a power electronic actuator (8, 13, 18) for the respective speed control of the drive (6) of the loom (5) and the drives (11, 16) of the two Jacquard machines (10, 15), characterized in that each drive (11, 16) of the two Jacquard machines (10, 15) with an additional flywheel (12, 17) is operatively connected, wherein the additional flywheel masses (12, 17) are so adapted to the respective Jacquard machine (10, 15) that the starting of the respective n jacquard machine (10, 15) starting from standstill to the respective maximum speed specified by the manufacturer of the respective jacquard machine (10, 15) takes at least two weaving cycles, and in that the controller (3) is designed such that it starts the weaving machine (5) and the two jacquard machines (10, 15) is able to control as follows, wherein the respective harness of the jacquard machines (10, 15) assumes an open shed position during starting: - the two jacquard machines (10, 15) are preset to a user Speed n _sync started, where n _sync indicates the speed specification on reaching the synchronicity between weaving machine (5) and the two jacquard machines (10, 15), - the loom (5) is accelerated to n _sync at its start within a weaving cycle, - Start of the two jacquard machines (10, 15) is timed to the start of the loom (5) in relation to such that at a time t ₁ , to which the weaving machine ( 5) predetermined speed n _{W reaches} 20% of the speed specification n _sync , which reaches the two jacquard machines (10, 15) respectively predetermined speed n _J1 , n _J2 respectively at least 60% of the speed specification n _sync , and - the two jacquard machines (10, 15 ) are synchronized with each other from a time t ₂ , wherein the time t _{2 is} not later than the time of the onset of weaving professional movement by at least one of the two Jacquard machines (10, 15), said Inserting the tray movement completed in the previous start course open shed this at least one jacquard machine (10, 15) finished. Setup after Claim 1 , characterized in that the controller (3) is designed such that it controls the synchronous starting of the two jacquard machines (10, 15), wherein in the case of different maximum starting dynamics, the speed gradient at least in its maximum limit after the jacquard machine (10, 15) with the lower maximum starting dynamics. Setup after Claim 1 , characterized in that the controller (3) is designed such that it controls the staggered starting of the two Jacquard machines (10, 15), wherein at different maximum starting dynamics preferably the jacquard machine (10, 15) is started with the lower maximum starting dynamics first , Setup after Claim 1 or 3 , characterized in that the controller (3) is designed for starting the two jacquard machines (10, 15) such that the other jacquard machine (15, 15) is only reached when the speed specification n _{Sync is reached} by a jacquard machine (10, 15) which first starts the starting process. 10) is started. Device according to at least one of the preceding claims, characterized in that the controller (3) is designed such that it causes the starting of the weaving machine (5) only when the speed specification n _Sync by both Jacquard machines (10, 15) is reached. Device according to at least one of the preceding claims, characterized in that the controller (3) is designed such that it the startup process of the weaving machine (5) and the Jacquard machines (10, 15) automatically taking into account netzwerknetzseitiger and / or machine and / or applicative Characteristics controls. Device according to at least one of the preceding claims, characterized in that in Jacquard machines (10, 15) with mutually different shed profiles, the respective additional flywheel mass (12, 17) is different in size. Device according to at least one of the preceding claims, characterized in that at least one further jacquard machine is provided with its own drive and operatively connected to at least one additional flywheel, which is controlled according to the two said jacquards (10, 15) of the controller (3) , Device according to at least one of the preceding claims, characterized in that the controller (3) is designed such that it is able to control the stopping of the weaving machine (5) and the two jacquard machines (10, 15) as follows: stopping the two Jacquard machines (10, 15) is related to the stopping of the weaving machine (5) in terms of time so that at a time t ₁₂ , at which the predetermined speed n _{W of} the weaving machine (5) 20% of the speed specification n _{10 falls} below the two jacquard machines (10, 15) each predetermined rotational speed n _J1 , n _J2 is at least 60% of a speed specification n ₁₀ , wherein the speed specification n ₁₀ the resolution of the synchronism between one hand of the loom (5) and on the other hand, the two Jacquard machines (10 , 15) indicative time t _{10 is} assigned. Device according to the preceding claim, characterized in that at the latest from the time t ₁₁ to which both or the last of the two Jacquard machines (10, 15) terminate their respective Webbetriebsmäß professional movement, the Jacquard machines (10, 15) are stopped in the open subject position. Method for producing woven fabric with a weaving machine (5) and with two shed forming machines designed as jacquard machines (10, 15) each having a harness, with a controller (3) for controlling the starting, operating and stopping of the loom (5) and of the two Jacquard machines (10, 15), with one of the loom (5) associated electromotive drive (6) and each one of the respective jacquard machine (10, 15) associated electromotive drive (11, 16), each with a power electronic actuator (8 , 13, 18) for respective speed control of the drive (6) of the weaving machine (5) and the drives (11, 16) of the two Jacquard machines (10, 15), characterized in that each drive (11, 16) of the two Jacquard machines ( 10, 15) with an additional flywheel (12, 17) is operatively connected, wherein the respective additional flywheel masses (12, 17) is so adapted to the respective Jacquard machine (10, 15) that the starting of the respective J acquardmaschine (10, 15) starting from standstill to the manufacturer of the respective jacquard machine (10, 15) predetermined respective maximum speed at least two weaving cycles to complete, and that the controller (3) starting the loom (5) and the two Jacquard machines (10, 15) controls as follows, the respective harness of the jacquard machines (10, 15) occupying an open position at the start thereof: - the two Jacquard machines (10, 15) are started at an operator-specified speed n _Sync , where n _Sync indicates the speed specification on reaching the synchronism between weaving machine (5) and the two Jacquard machines (10, 15), - the weaving machine (5) accelerated when they are started within a weaving cycle on n _Sync, - the start of the two jacquard machines (10, 15) is so set to the start of the weaving machine (5) in time relative to a time t ₁ at which the loom (5) predetermined speed n _{W reaches} 20% of the speed specification n _Sync , which reaches the two jacquard machines (10, 15) respectively predetermined speed n _J1 , n _J2 respectively at least 60% of the speed specification n _Sync , and - the two jacquard machines (10, 15) are synchronized with each other from a time t ₂ , wherein the time t _{2 is} not later than the time of the beginning of the weaving professional movement by at least one of the two Jacquardmash (10, 15), wherein this insertion of the compartment movement ends the open shed position occupied by the previous start course of this at least one jacquard machine (10, 15). Method according to Claim 11 , characterized in that the two Jacquard machines (10, 15) are started synchronously, wherein in the case of different maximum starting dynamics, the speed gradient at least in its maximum limit according to the jacquard machine (10, 15) with the lower maximum starting dynamics. Method according to Claim 11 , characterized in that only when reaching the speed specification n _Sync by the jacquard machine (10, 15) first starting the starting process, the other jacquard machine (15, 10) is started. Method according to at least one of the preceding method claims, characterized in that the weaving machine (5) is not started until the speed specification n _{Sync has been reached} by both jacquard machines (10, 15). Method according to at least one of the preceding method claims, characterized in that, when the operating speed is increased, to be started or braked, the minimum specifications for the speeds n _J1 , n _{J2 of} the jacquard machines (10, 15) for Time t _{1 are changed} during startup and at time t ₁₂ during shutdown so that they are above 60% of n _sync for starting and n ₁₀ for the shutdown. Method according to at least one of the preceding method claims, characterized in that the operator makes the basic selection between a synchronous and a staggered start of the jacquard machines (10, 15). Method according to at least one of the preceding method claims, characterized in that the operator, in the case of a staggered start of the jacquard machines (10, 15), can determine which of the two jacquard machines (10, 15) starts first. Method according to at least one of the preceding method claims, characterized in that the controller (3) controls the stopping of the weaving machine (5) and the two jacquard machines (10, 15) such that at a time t ₁₂ , at which the predetermined speed n _W the weaving machine (5) 20 falls below 20% of the speed specification n ₁₀ , the two Jacquard machines (10, 15) each have at least one respective predetermined speed n _J1 , n _J2 of 60% of a speed specification n ₁₀ , wherein the speed specification n ₁₀ the resolution the synchronicity between on the one hand the loom (5) and on the other hand the two jacquard machines (10, 15) indicative time t _{10 is} assigned. Method according to at least one of the preceding method claims, characterized in that the method is used only in cases in which a speed for the first sheet stop must be reached, which is above a predetermined threshold, while at a speed equal to or below this predetermined threshold value Weaving machine (5) and the two Jacquard machines (10, 15) are started synchronously and stopped, the threshold is preferably at 300 rounds / min.

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