EP3255182A1 - Spinning machine comprising a plurality of workplaces and a suction appliance - Google Patents

Description

The present invention relates to a spinning machine with a plurality of longitudinally of the spinning machine on at least one longitudinal side between two front ends of the spinning machine juxtaposed jobs, each having a plurality of working members for producing and winding a yarn, wherein the working members at least one feeder, a spinning chamber, a withdrawal device and a winding device, with drives for driving the working organs and with a suction device for generating a negative pressure at the work stations.

In the prior art in spinning machines, it has long been common to drive all work organs of the jobs centrally to operate the machines economically. The drive in each case similar working elements is carried out by a central drive arranged at one end of the spinning machine, which drives the working organs of all jobs via a machine-length shaft or a tangential belt. The spinning machines also have a central device for generating negative pressure, which is passed through a machine-long suction to the individual jobs. The vacuum is required at the spinning stations to maintain the spinning process or to remove loose fibers, dust and fiber fly from components of the spinning station. Likewise, negative pressure may be needed to aspirate and dispose of separated pieces of thread or to remedy a thread break. In today's spinning machines, which are equipped with increasingly more spinning stations, but this machine concept reaches its limits.

The DE 101 45 443 A1 has to improve the vacuum supply to a compression spinning machine, compared to rotor and air spinning machines has a particularly high vacuum requirement, already proposed to use multiple fans. These supply a plurality of vacuum channels, which can be arranged both parallel to one another and also in the longitudinal direction of the spinning machine one behind the other.

The DE 10 2006 029 056 A1 describes a rotor spinning machine with a between the workstations arranged intermediate frame. In this case, at least the central drive for the Fadenchangiereinrichtungen and the means for generating the spinning negative pressure to be arranged in the intermediate frame. As a result, both the required length of the yarn guide rods and the vacuum channels for distributing the spinning vacuum is reduced to the jobs, since these only have to extend from the intermediate frame to one of the two machine ends. Problems of central drive of the yarn guide rods due to elongation and torsion, which increase with the length of the machine, can thereby be reduced and the vacuum supply can be improved.

However, in addition to improving the vacuum supply and avoiding problems of elongation and torsion, there is also the need to be able to operate energy-efficiently long spinning machines. Object of the present invention is therefore to propose a spinning machine, which allows the arrangement of a particularly high number of jobs on the spinning machine and at the same time allows economical operation of the machine.

The object is achieved with the features of claim 1.

A spinning machine has a plurality of longitudinally of the spinning machine between two front ends on at least one longitudinal side of the spinning machine juxtaposed jobs. The jobs each have several working organs for the production and Aufspulung a yarn, these at least one feed device, a spinning chamber, a take-off device and a winding device comprise. Furthermore, the spinning machine on drives for driving the working organs and a suction device for generating a negative pressure at the work stations.

The suction device includes at least one vacuum source and at least two separate vacuum channels, which extend in the longitudinal direction of the spinning machine only over part of the jobs. Furthermore, each job as a drive for the trigger device on a single drive. The single drive is preferably designed as a single electric drive, but could also be a pneumatic drive.

Characterized in that two or more vacuum channels are provided, which only have to provide a part of the jobs, the resulting over the length of the vacuum channel pressure losses can be significantly reduced. It is thereby possible to use one or more negative pressure source with a lower suction power.

The fact that in addition the extraction devices of the work stations of the spinning machine are each driven individually, they can be independently set still or put into operation. It must therefore be spent at a standstill job, so for example during maintenance operations or malfunctions, no energy for the drive of the trigger. Since in modern spinning machines with a variety of jobs almost constantly at least one job is still, a significant energy savings can be achieved by means of individually driven trigger devices despite the inherently higher cost of a single drive. In addition, a single-driven extraction device allows a controlled stopping and starting the individual jobs and an individual adjustment of the delay. In particular, when piecing on an air-spinning machine is controlled by a controlled Raising the trigger the distortion can be precisely adjusted so that piecing with high quality can be produced.

If only one vacuum source is used, then this is advantageously arranged in a middle region of the spinning machine, from where the at least two vacuum channels extend to both sides. But it is also conceivable to arrange at least two vacuum sources in the central region of the spinning machine, which then supply each spinning stations between one of the ends of the spinning machine and the central region.

According to another embodiment, it is advantageous if the spinning machine has at least two separate vacuum sources, each of the vacuum sources is connected to a separate vacuum channel. It is advantageous if at least one of the two end-side ends of the spinning machine at least one of the vacuum sources is arranged. At least one further source of negative pressure may in this case be arranged either in a central region situated between the two front ends of the spinning machine or at the other front end of the spinning machine. However, it is also possible to provide in each case at least one vacuum source at each of the two ends of the spinning machine, or, in particular for very long machines, at least one vacuum source at each of the two ends and at least one further vacuum source in a central region of the spinning machine. In any case, due to the separate vacuum channels, the total output of the at least two separate vacuum sources may be lower than it would be in the case of a single vacuum source with a continuous vacuum channel.

Preferably, the vacuum sources are arranged in a frame which is located either at a front end of the spinning machine or as an intermediate frame in the central region of the spinning machine is. It is thereby possible to accommodate central drives of the spinning machine and the vacuum source in a common frame. However, it is also conceivable to arrange the vacuum sources in each case in a separate housing or frame.

The spinning machine with individually driven exhaust devices and with a subdivided vacuum supply with at least two vacuum sources therefore allows due to the optimal arrangement and drive form of these two essential for energy consumption components a particularly energy-saving and cost-effective operation. In addition, it is also possible by the subdivided vacuum supply to provide a total of a larger negative pressure level at the spinning stations, so that a better spinning stability and better yarn stability can be achieved. The accessibility to the vacuum sources and their filter boxes, in which extracted impurities and waste are collected, not affected. The maintenance and the supply and disposal by operators or by automatic maintenance devices is thereby also facilitated, which further contributes to the economic operation of the machine.

It is advantageous if the work stations each have at least one suction point, which is arranged either in the region of the spin chamber or in the region of the feed device. For example, a rotor spinning machine has a suction point in the region of the spinning chamber. Since rotor spinning machines have a particularly high vacuum requirement due to the spin vacuum required for the spinning process, the divided vacuum supply with a vacuum source at each end is particularly advantageous in such machines. It can also be achieved on long machines with over 500 jobs even at the remote from the vacuum source jobs still sufficient vacuum level. Since the workplaces are supplied with negative pressure evenly, In addition, quality problems of the produced yarn can be avoided.

However, it is also advantageous if the spinning machine is an air jet spinning machine. This has, for example, a suction point in the spinning chamber, so that not embedded in the yarn fibers are sucked off, which could otherwise lead to clogging of the spinning element and quality deterioration of the yarn produced. Likewise, the air jet spinning machine can have at least one suction point in the region of the feed device in order to carry away emerging fibers and to prevent the formation of laps. Therefore, it is also particularly advantageous if, in the case of a fan jet spinning machine, the work stations each have at least one first suction point in the region of the spinning chamber and at least one further suction point in the region of the feed device. Due to the divided suction device energy-efficient fans with a lower power can be used in such a spinning machine with a per se higher vacuum demand.

Furthermore, it is advantageous if the vacuum sources each have a fan and a drive for the fan. The drives of the vacuum sources are preferably controlled by a central control device of the spinning machine. It can be at least two similar drives and fans. If a different vacuum level is required in the at least two vacuum channels, for example in different spinning applications, or the vacuum channels are of different lengths, however, different fans and drives can also be used. It is also advantageous that the fans each have their own filter box is assigned and thus disposal of the waste collected therein can be done at both ends of the machine. Also, a rapid clogging of the filter and a concomitant negative pressure drop can be avoided.

For an energy-saving operation of the spinning machine, it is advantageous if at least 20%, preferably at least 30%, particularly preferably at least 40% of the longitudinal direction of the spinning machine on at least one longitudinal side juxtaposed jobs is connected to each of the at least two vacuum channels. It is thereby ensured that the pressure losses in the vacuum channels are kept within narrow limits and the individual jobs are supplied with a uniform vacuum. It is also advantageous if the two vacuum channels are formed of equal length and / or in each case the same number of jobs is connected to the two vacuum channels. Compared to a single, machine-length vacuum channel, the vacuum channels can be reduced to about half of the previous length, whereby the pressure losses can be reduced in an optimum manner.

According to a structurally advantageous and space-saving design of the spinning machine, it is provided that the at least two vacuum channels are arranged in alignment in the longitudinal direction of the spinning machine one behind the other. It is thus also possible to take over the previous machine structure with a single, continuous vacuum channel and to use only a partition or a diaphragm for flexible subdivision, to form the two separate vacuum channels. Alternatively, it is also conceivable that the two vacuum channels run at least partially parallel to one another with respect to the longitudinal direction of the spinning machine. This makes it possible to connect individual jobs as needed to one or the other vacuum channel and thereby flexibly design the vacuum supply.

Likewise, it is advantageous if, in an air jet spinning machine, a vacuum of at least 2000 Pa is still reached in each of the vacuum ducts at an end of the respective vacuum duct opposite the vacuum source. The supply of jobs with a largely uniform vacuum level can be ensured thereby. In a rotor spinning machine, however, it is advantageous if a negative pressure of 6000 Pa is reached at one of the negative pressure source opposite end of the vacuum channel.

Furthermore, it is advantageous if each workstation has a single drive, in particular an electric single drive for the feed device. It is thereby possible in a particularly advantageous manner, in particular on a semi-automatic rotor spinning machine, to adapt the feed quantity of the chamfers to the prevailing conditions prevailing at the workstation. In the case of an air spinning machine, on the other hand, at least one feed roller pair driven by means of a single drive is provided as the feed device, so that here too the quantity of fiber material supplied can be precisely matched to the respective prevailing conditions. If the feed device is designed as a delay device, then it is advantageous if it is designed by means of a single drive per spinning station. The o.g. Delivery roller pair is part of the feeder, so that all rollers of the feeder are driven by a common single drive per spinning position .. Alternatively, it is also conceivable to drive the feeder and the pair of delivery rollers each by means of two or more individual drives per job. As a result, the delay can be set individually at each workstation, which facilitates the production of various products on a machine.

Are in the spinning machine on both sides between the front ends arranged workstations, it may be advantageous if each of the two longitudinal sides is also supplied separately with negative pressure. There are thus provided at each of the two ends in each case two negative pressure sources, which are connected to a respective separate vacuum channel, which in turn extends only over part of the longitudinally juxtaposed jobs.

According to a development of the invention, it is advantageous, in particular in the case of an air jet spinning machine, if at least the winding devices are each driven by means of an electric single drive. The spinning machine is thus particularly flexible and allows the production of different products as well as a flying batch change. In particular, if the jobs also have their own thread handling devices, long waiting times to maintain or repair thread breaks can be avoided, which in turn allows an increase in productivity. In addition, it may also be advantageous to drive the thread laying by means of a single drive.

According to another embodiment of the invention, however, the other working members, but at least the winding devices, one longitudinal side in each case driven by central drives. Since these rotate at comparatively low speeds, the losses are even in longer machines with a particularly high number of spinning stations, for example, more than 500 spinning stations in rotor spinning machine or more than 120 in air spinning machines, still in an area in which a central drive as economical proves. In a semiautomatic rotor spinning machine also results in a particularly economical operation when the resolving devices are also driven by a central drive.

Furthermore, it is advantageous if similar, centrally driven working members of a longitudinal side each form at least two groups, wherein in each of the two racks at the front ends of a separate central drive for driving one of the two groups is arranged. It can thereby be achieved in turn a shortening of the usually machine-length drive means to up to half of the otherwise required length. As a result, not only can torsion and elongation problems be reduced, but also the losses due to flexing in the belts can be reduced. The at least two groups per longitudinal side of the Spinning machine can each comprise the same number of jobs or different numbers. It is advantageous if in turn at least 20% of all work sites of a longitudinal side are each assigned to a central drive.

It is also advantageous if the spinning machine has at least two spool conveyor belts arranged one behind the other in the longitudinal direction of the spinning machine. Also at these high losses, which can be reduced by the use of two shorter belts with smaller drives instead of a single belt with a large drive.

Likewise, it is advantageous if the spinning machine has an intermediate storage for empty tubes in order to shorten the delivery routes and thus also the belt running times for the supply of empty tubes.

According to another embodiment of the invention, it may be advantageous if deflection rollers of central drives and / or drives and / or storage units for central supply and disposal facilities are arranged in the intermediate frame.

The supply of Leülülsen can further facilitated and the delivery times for empty tubes can be shortened when the spinning machine has at each of its front ends a central sleeve storage for empty tubes. Preferably, these are spaced from the two racks arranged to allow the accessibility of the racks.

Furthermore, it is advantageous if the spinning machine at each of its two front ends a connection for energy supply, in particular for a power supply for the electrical components and / or for a compressed air supply having.

It is likewise advantageous if the spinning machine has an exhaust air outlet of the suction device at each of its two front ends. Likewise, a protective discharge can be provided at both ends of the machine.

Figur 1

eine Spinnmaschine in einer schematischen Übersichtsdarstellung gemäß einer ersten Ausführung,

Figur 2

eine Arbeitsstelle einer Rotorspinnmaschine in einer schematischen Schnittdarstellung,

Figur 3

eine Arbeitsstelle einer Luftdüsenspinnmaschine in einer schematischen Schnittdarstellung,

Figur 4

eine Spinnmaschine in einer schematischen Übersichtsdarstellung gemäß einer zweiten Ausführung,

Figur 5

eine Spinnmaschine in einer schematischen Übersichtsdarstellung gemäß einer weiteren Ausführung, sowie

Figur 6

eine schematische Darstellung einer Spinnmaschine mit einer zentralen Versorgungseinrichtung für Leerhülsen und einem Zwischengestell.

Further advantages of the invention will be described with reference to the embodiments illustrated below. Show it:

FIG. 1

a spinning machine in a schematic overview representation according to a first embodiment,

FIG. 2

a workplace of a rotor spinning machine in a schematic sectional view,

FIG. 3

a workplace of an air jet spinning machine in a schematic sectional view,

FIG. 4

a spinning machine in a schematic overview representation according to a second embodiment,

FIG. 5

a spinning machine in a schematic overview representation according to a further embodiment, and

FIG. 6

a schematic representation of a spinning machine with a central supply device for empty tubes and an intermediate frame.

FIG. 1 shows a schematic representation of a spinning machine 1, which is particularly suitable for the arrangement of a plurality of jobs 3 in the longitudinal direction of the spinning machine 1 side by side. The workstations 3 are arranged side by side between two front ends 2 and each have a plurality of working members 4 in a manner known per se. 5, 6, 7 for the production and winding of a yarn 31. Each work station 3 has a feed device 4, by means of which a fiber material is supplied from a storage container 24 to a spinning chamber 5, in which it is spun to the yarn 31. From the spinning chamber 5, the yarn 31 is withdrawn by means of a take-off device 6 and finally wound by means of a winding device 7 onto a spool 32. Furthermore, the spinning machine 1 has a suction device 8, which serves to supply the workstations 3 with negative pressure and also for discharging impurities and waste from the workstations 3, which are incurred during piecing and when waiting for the jobs 3, is provided.

In order to meet the demands of the market for increasing the productivity of spinning machines 1, it is necessary to increase the number of jobs 3 per spinning machine 1. This is the conventional machine concepts in which the working organs 4, 5, 6, 7 of a job 3 were each driven centrally from an end frame 12 from, in question. In addition, in view of ever increasing energy costs, there is also the need to keep the operating costs for such spinning machines 1 low even with an extension of the machine.

The spinning machine 1 shown here therefore has, for the vacuum supply, a suction device 8 with at least two separate vacuum sources 9 and at least two separate vacuum channels 10. In this case, each of the vacuum sources 9 is connected to one of the separate vacuum channels 10, which extend in the longitudinal direction of the spinning machine 1 only over part of the jobs 3. The vacuum sources 9 are according to the FIG. 1 in each case at the front ends 2 of the spinning machine 1, in this case in each case end-side frames 12, respectively. The vacuum channels 10 are present in the longitudinal direction of the spinning machine 1 one aligned behind the other, so that only a small space is needed. A division 34 between the two vacuum channels 10 can be made fixed or flexible, for example. In which a continuous Channel is divided by means of a displaceable aperture in two vacuum channels.

In any case, each workstation 3 is connected to at least one of the at least two vacuum channels 10, on the other hand, only one part of the workstations 3 is connected to each of the vacuum channels 10. Furthermore, a central control device 13 is arranged in one of the racks 12, by means of which the drives of the vacuum sources 9 and all central drives 23 and belt drives 19, 39 are controllable, as will be explained below.

The spinning machine1 the FIG. 1 can be formed for example as a semi-automatic spinning machine 1. A workstation 3 such as a semi-automatic spinning machine 1 rotor spinning machine is in FIG. 2 shown. In contrast to a fully automatic spinning machine 1, in which maintenance activities such as piecing are carried out by movable or spinning station-own maintenance facilities, the semi-automatic spinning machine must be operated at least partially manually. In addition to the FIG. 1 described work organs 4, 5, 6, 7 of the workstation 3 are present still an opening roller 29, a yarn guide rod 28, a winding roller 26 disposed on the winding roller 26 and arranged in the spinning chamber 5 spinning rotor 35 recognizable. The feeder 4 is presently designed as a feed roller. In addition, a arranged in the spinning chamber 5 suction point 14 can be seen.

By means of the described distributed vacuum supply with at least two shorter vacuum channels 10, it is possible to provide the work stations 3 of the spinning machine very uniformly with negative pressure and to provide a higher overall vacuum level. In spite of the more elaborate suction device 8, an economical operation of the machine 1 is possible because the total vacuum losses relative to the spinning machine 1 with respect to a single, central negative pressure source. 9 can be reduced and also quality problems of the yarn produced can be reduced.

For energy-saving operation of the spinning machine 1 further contributes that the trigger devices 6 each work 3 are driven by a single drive 11. The deduction devices 6 can thereby also be stopped when the production is interrupted. In addition, the individually driven trigger devices 6 allow a controlled shutdown and startup of the job 3, which facilitates the piecing and avoids thread breaks. The other work organs of the workplace 3, however, are by means of central drives 23 (see FIG. Fig. 1 ) driven centrally or at least in groups. Thus, the feed device 4 can be driven via a shaft 33, while the opening roller 29 and the spinning rotor 35 of the spinning chamber 5 are driven via a tangential belt 27. The winding roller 26 of the winding device 7 is driven by the centrally driven winding roller shaft 22 and a thread guide not shown here via the also centrally driven yarn guide rod 28th

It has been found that a particularly energy-saving and at the same time economical operation of the spinning machine 1 is possible by means of the combination of a single drive 11 for the take-off device 6 and central drives 23 for the other working bodies of the workstations 3. Deviating from the illustration shown, however, it is also possible to also drive other working elements 4, 7 or 26, 28, 29 of a workstation 3 by means of individual drives 11. In the case of a semiautomatic spinning machine 1, it is particularly advantageous to drive the feed device 4 by means of a single drive 11 in addition to the draw-off device 6 in order to be able to control the amount of fiber fed in. The other working members 7 with 26, 28, 29 are preferably again driven centrally in this case. Alternatively, the spinning machine 1 of the Fig. 1 However, also be designed as an air-spinning machine. FIG. 3 1 shows a workstation 3 of such a spinning machine 1 designed as an air-spinning machine. In contrast to the rotor spinning machine, in the air-spinning machine the spinning chamber 5 is provided with a spinneret 38. In the present case, the feed device 4 comprises a drafting device 15 and a delivery roller pair 16, by means of which a strip-shaped fiber material is first drawn and finally fed to the spinning chamber 5 via the delivery rollers 16. The other work organs 6, 7 with 26, 28 of the workplace 3 correspond to those of Fig. 2 , so that will not be discussed in detail. The suction device 8 corresponds to the FIG. 1 described, which provides a distributed vacuum supply with at least two vacuum sources 9 and at least two vacuum channels 10, so that even at the air spinning machine, the jobs 3 can be supplied very evenly with a high with negative pressure.

Again Fig. 3 Removable, the workstation 3 at least two suction points 14, one of which in turn are arranged in the region of the spinning chamber 5 and at least one further in the region of the feed device 4. In the present case four suction points 14 are provided in the region of the feed device 4, which are each associated with the lower rollers of the feed device 4. Due to the distributed vacuum supply, the workstations 3 can be supplied even at very long machines 1 at any position within the machine 1 with a sufficient negative pressure.

The take-off device 6 is again driven by a single drive 11, which as before Fig. 2 described, in combination with the distributed vacuum supply energy-saving operation of the spinning machine 1 allows. To be able to adjust the delay and the fiber material supply individually at each workstation, it is provided in the present case, in addition to the extraction device, to drive the supply device by means of a single drive 11. In this case, as shown in the present case, a single individual drive 11 may be provided for the entire delivery device 4, or the roller pairs of the feeding device 4 can each be driven individually by means of a separate drive 11 of its own. The other working members 26, 28 of the workstations 3 are presently in turn centrally driven at least in groups. Such a combination of central drives 11 and individual drives 23 with the distributed vacuum supply has proven to be an advantageous compromise for energy-saving operation with high yarn quality. It is conceivable, however, to drive the winding device 7 and the thread laying by means of further individual drives 11. In any case, it is advantageous that by means of the individually driven trigger device 6, the delay in the yarn 31 can be adjusted individually and for each production step, which, inter alia, enables the production of particularly high quality piecing.

It is advantageous in any case when the centrally driven working members 4, 5, 7 with 26, 28, 29 groups are centrally driven. How out Fig. 1 As can be seen, the work stations 3 on one longitudinal side of the spinning machine 1 are subdivided into two groups, each of the two groups being assigned their own central drives 23. In the present case, only central drives 23 for the winding 7 or winding roller shaft 22 are shown by way of example. Depending on the design of the spinning machine 1, however, further central drives 23 may be provided, for example for the thread laying or thread guide rods 28 or, in the case of a rotor spinning machine, for opening rollers 29 and spinning rotors 35. The central drives 23 are housed in the arranged at the front ends 2 racks 12. Furthermore, there may also be arranged central drives 19 and 39 for bobbin conveyor belts 18 for disposal of the finished bobbins and one or more tube conveyor belts 36 for supplying the work stations with empty tubes 37.

Since considerable friction losses between the bobbin conveyor belt 18 and baffles of the spinning machine 1 may occur, 1 powerful drives are required for long spinning machines. In the embodiment of FIG. 1 Therefore, two spool conveyor belts 18 are longitudinally one behind the other provided, which are each provided with its own drive 19. Due to the fact that the bobbin conveyor belts 18 only extend over part of the workstations 3 arranged side by side in the longitudinal direction, the two drives 19 can be made substantially smaller and therefore designed to be economical in terms of consumption.

The supply of jobs 3 with empty tubes 37 takes place here by means of a central supply device 21. This includes a central memory 30 for empty tubes 37 and a present machine-long tube transport belt 36, which is shown only by a dashed line. The drive 39 of the tube conveyor belt is presently arranged in the frame 12 shown on the right.

In the present case, only one longitudinal side of a spinning machine 1 one is shown. It is understood that the spinning machine 1 may have a plurality of jobs 3 on its two longitudinal sides. In this case, the described arrangement of the drives 23, 19 and 39 and the sleeve conveyor belt 36 is provided in an analogous manner on the opposite longitudinal side of the rotor spinning machine 1. If the work stations 3 of each longitudinal side are subdivided into two groups, four respective central drives 19, 23, of which two are arranged at each of the two end-side ends, result correspondingly for similar working elements. It may also be advantageous to supply the two longitudinal sides of the rotor spinning machine 1 one each separately from each other with negative pressure. In this case, two separate vacuum channels 10 would thus be arranged at each of the two front ends 2, which are each associated with one of the two longitudinal sides of the spinning machine 1.

FIG. 4 shows another embodiment of a spinning machine 1, as well as the FIG. 1 as a rotor spinning machine with jobs 3 according to the FIG. 2 or as air spinning machine with jobs 3 according to the FIG. 3 can be executed. The individual components and assemblies of the spinning machine 1 of the FIG. 3 essentially correspond to those of FIG. 1 , so in the following only to the differences to FIG. 1 will be received.

In contrast to FIG. 1 has the spinning machine 1 of FIG. 3 no racks 12 at the front ends 2 of the spinning machine 1, but only one between the ends 2 arranged intermediate frame 17. The suction device 8 of the spinning machine 1 also has at least two separate vacuum sources 9 and at least two separate vacuum channels 10. However, the vacuum sources 9 are not arranged at the front ends 2 of the spinning machine 1, but in a central region, in this case in an intermediate frame 17, between the two ends 2. The vacuum channels 10 are also arranged in alignment one behind the other in the longitudinal direction of the spinning machine 1, wherein each workstation 3 is connected to at least one of the vacuum channels 10. The jobs 3 of the spinning machine can be supplied evenly in this embodiment even with negative pressure, the negative pressure losses can be reduced.

Also in this embodiment is an energy-saving combination of a single drive 11 for the discharge devices 6, by means of which the delay in the yarn 31 can be set comparatively freely, and central drives 23, in particular groupwise central drives 23, for the other working organs 4, 5, 7 and if necessary 29 of the workplaces 3. The central drives 23, the belt drives 19, 39 and the central control device 13 can be accommodated in an advantageous manner in the intermediate frame 17, so that such a spinning machine 1 is also a special space-saving. Nevertheless, an energy-saving division of the central and belt drives 23, 19, 29 with respect to the longitudinal direction of the spinning machine 1 is also possible in this embodiment.

As an alternative to the illustration shown, but as previously to the Figures 1 - 3 described, other work organs 4, 5, 7, 28 and possibly 29 are driven by single drives 11.

An advantage of this embodiment, it is further that 12 various accommodation options for a supply device 21 for empty tubes 37 exist due to the lack of racks. In the present case, for example, the supply device 21 is arranged at one end 2 of the spinning machine 1, while only one support 40 is provided at the other end 2. It is also conceivable to arrange individual central or belt drives 23, 19, 39 in the supply device 21, as shown here by way of example for the drive 39 of the tube transport belt 36.

FIG. 5 shows a further embodiment of a spinning machine 1 as a rotor spinning machine or as an air-spinning machine, whereby also only the differences to the Figures 1 - 4 to be discribed. The spinning machine 1 shown here has a first frame 12 at one of the front ends 2 of the spinning machine 1 and in addition an intermediate frame 17 arranged between the ends 2. In each case, a negative pressure sources 9 are arranged in the racks 12 and 17, which in turn acts on each one of the separate vacuum channels 10. The take-off devices 6 are each driven by means of a single drive 11, while for the further working members 4, 5, 7, 28, 29 preferably central drives 23 are provided.

The embodiment has the advantage that all central drives 23 and belt drives 19, 39 distributed in both the intermediate frame 17 and in the end frame 12 can be accommodated. In particular, in a group-wise drive, in which at least two drives per longitudinal side of the spinning machine 1 are provided, this is advantageous. It is still like that FIG. 4 described possible, the supply device 21 space-saving at the other front end 2 of the spinning machine 1 to arrange. Of course, the supply device 21 could also be provided in the region of the end frame 12.

In any case, a particularly energy-saving operation of the spinning machine 1 is also possible here by the subdivided vacuum supply in combination with individually driven exhaust devices 6.

Fig. 6 shows a further embodiment of a spinning machine 1 with an intermediate frame 17. This may be advantageous if the spinning machine 1 over a very large number of jobs 3, in the case of a rotor spinning machine, for example, more than 600 jobs 3, has. The spinning machine 1 largely corresponds to the already on the basis of FIG. 1 described below so that only the differences to the execution of the following FIG. 1 will be received. The intermediate frame 17 may be provided in the simplest case, only for accommodating pulleys 25, which in the case of means of tangential belt 27 centrally driven working members 29, 35 are required. In the present case, however, the drives 19 of bobbin conveyor belts 18 are arranged in the intermediate frame 17. This makes it possible to accommodate other devices at the ends 2 or in the racks 12 instead of the drives 19 of the bobbin conveyor belts 18. Deviating from FIG. 1 In the present case, central drives 23 are provided for the feed devices 4 and for the spinning chambers 5 or spinning rotors 35. These too are only to be understood as examples. Depending on the type of spinning machine 1, other or even further work organs can be driven centrally or it can also be provided for some work organs individual drives 11.

In the present case, an intermediate store 20 is furthermore provided in the intermediate frame 17, in which a certain number of empty tubes 37 can be stored. It is thus possible to supply the workstations 3 located farther away from the central sleeve store 30 from the intermediate store 20 and the workstations located near the central store 30 from the central sleeve storage 30. In this case, the empty tubes 37 can be the individual jobs at least one longitudinal side of the machine 1 delivered by means of a single tube transport belt 36 from both the central sleeve memory 30 and the latch 20. In the present case, however, two tube conveyor belts 36 are provided, wherein the intermediate store 20 can be loaded from the central sleeve store 30 with empty tubes 37. The productivity of the spinning machine 1 can thereby be further increased, since the waiting times for empty tubes 37 can be significantly reduced.

Notwithstanding the illustration shown, it is also possible to provide one or two further negative pressure sources 9 in the intermediate frame 17, which are each connected to a further, separate vacuum channel 10. For example, a substantially centrally placed between the front ends 2 intermediate frame 17 may be provided with two vacuum sources 9, which then supply each of the jobs 3 in the left and right of the intermediate frame adjacent areas. The jobs 3 in the near the front ends 2 lying areas, however, are powered by the provided there vacuum sources 9. With such a design particularly long spinning machines 1 can be realized, the negative pressure losses can still be kept low. Likewise, however, an asymmetric structure of the spinning machine 1 may be provided, in which the intermediate frame 17, although between the two front ends 2, but is arranged eccentrically. In this case, preferably only one vacuum source 9 is arranged in the intermediate frame 17, which supplies the work stations 3 of the longer machine section together with a arranged in one of the end frames 12 vacuum source 9.

The invention is not limited to the illustrated embodiments.

So it is different from in the FIGS. 1 and 4 shown representation not necessarily required to divide the jobs 3 a long side of the spinning machine 1 in equal groups. It is also conceivable to provide a larger and a smaller group or more than two groups on each longitudinal side of the spinning machine 1. Each of the groups thus forms its own production group, which own central drives 23 and a separate vacuum source 9 is assigned, so that in each of the production groups and independently of the others, a different product can be produced. In any case, however, it is ensured by dividing into at least two production groups by their respective negative pressure source 9 that in each of the vacuum channels 10 in operation at any point a sufficient negative pressure is reached. The group-wise low-pressure supply also offers the possibility of setting the vacuum level in the vacuum channels 10 differently according to the intended product or according to the intended application in the respective production groups.

Furthermore, at each of the two ends 2 of the spinning machine 1, a central supply device 21 for empty tubes 37, each with at least one central sleeve memory 30 may be provided, which improves the flexibility in multi-part occupancy and further reduces the waiting times for empty tubes 37.

Further modifications and combinations within the scope of the claims also fall under the invention.

LIST OF REFERENCE NUMBERS

1

spinning machine

2

frontal end of the spinning machine

3

place of work

4

feeder

5

spinning chamber

6

off device

7

spooling device

8th

suction

9

Vacuum source

10

Vacuum channel

11

individual drive

12

frame

13

central control device

14

extraction point

15

drawing device

16

Pair of delivery rollers

17

between the frame

18

Coil conveyor belt

19

Drive of the coil conveyor belt

20

Cache for empty tubes

21

Central supply device for empty tubes

22

Spulwalzenwelle

23

Central drive

24

reservoir

25

guide rollers

26

winding roller

27

tangential

28

Feeder rod

29

opening roller

30

central storage for empty tubes

31

yarn

32

Kitchen sink

33

wave

34

Division of the vacuum channels

35

spinning rotor

36

Tube conveyor belt

37

empty tubes

38

spinneret

39

Drive of the tube conveyor belt

Claims (15)

Spinning machine (1), in particular rotor spinning machine or air jet spinning machine, with a plurality of between two front ends (2) of the spinning machine (1) on at least one longitudinal side of the spinning machine (1) juxtaposed jobs (3), each of which several working members for the production and winding a yarn (31), said working members comprising at least one feeding device (4), a spinning chamber (5), a take - off device (6) and a winding device (7), with drives for driving the working members and with a suction device (8) for Generating a negative pressure at the work stations (3), wherein the suction device (8) at least one negative pressure source (9) and at least two vacuum channels (10), each of the vacuum channels (10) in the longitudinal direction of the spinning machine (1) only over a part the workstations (3), characterized in that each workstation (3) a single drive (11), esp special an electric single drive (11), for the trigger device (6). Spinning machine according to the preceding claim, characterized in that the spinning machine (1) has at least two separate vacuum sources (9), each of the vacuum sources (9) being connected to a separate vacuum channel (10) and wherein the vacuum channels (10) are preferably aligned one behind the other are arranged. Spinning machine according to one of the preceding claims, characterized in that at least one of the vacuum sources (9) at one of the front ends (2) of the spinning machine (1) is arranged, wherein the negative pressure source (9) preferably in one at the front side End (2) of the spinning machine (1) provided frame (12) is arranged. Spinning machine according to one of the preceding claims, characterized in that at least one of the vacuum sources (9) in a central, between the two front ends (2) of the spinning machine (1) located region is arranged, wherein the at least one vacuum source (9) preferably in a between the two ends (2) provided intermediate frame (17) is arranged. Spinning machine according to one of the preceding claims, characterized in that the work stations (3) each have at least one suction point (14), in particular a suction point (14) in the region of the spinning chamber (5) or the feed device (4). Spinning machine according to one of the preceding claims, characterized in that the spinning machine (1) is designed as Lüftdüsenspinnmaschine and that the jobs (3) of the air jet spinning machine each have a first suction point (14) in the spinning chamber (5) and at least one further suction point (14 ) in the region of the feed device (4). Spinning machine according to one of the preceding claims, characterized in that the vacuum sources (9) each have a fan and a drive for the fan and that the drives of the vacuum sources (9) by a central control device (13) of the spinning machine (1) are controllable. Spinning machine according to one of the preceding claims, characterized in that the spinning machine (1) is designed as an air jet spinning machine and that in operation of the spinning machine (1) in each of the at least two vacuum channels (10) at one of the vacuum source (9) opposite end of the respective vacuum channel (10) still a negative pressure in the amount of 2000 Pa is achieved. Spinning machine according to one of the preceding claims, characterized in that the feed device (4) includes a delay device (15) and that the workstation (3) has a single drive (14), in particular an electric single drive (14), for the delay device (15) ,
are. Spinning machine according to one of the preceding claims, characterized in that the further working members of the workstations (3), at least the feed devices (4) and the winding devices (7), in each case by means of central drives (23) are driven, preferably similar working members (3) one Long side is assigned its own central drive (23). Spinning machine according to one of the preceding claims, characterized in that similar, centrally driven working members (3) form a longitudinal side at least two groups and that in each of the two frames (12) at the front ends (2) a central drive (23) for driving a the two groups is arranged. Spinning machine according to one of the preceding claims, characterized in that the spinning machine (1) has at least two spool conveyor belts (18) arranged one behind the other in the longitudinal direction of the spinning machine (1). Spinning machine according to one of the preceding claims, characterized in that the spinning machine (1) has a buffer (20) for empty tubes (37). Spinning machine according to claim 4, characterized in that in the intermediate frame (17) pulleys (25) of central drives (23) and / or drives (19, 23, 39) and / or memory (20,30) for central supply and disposal facilities (21, 18) are arranged. Spinning machine according to one of the preceding claims, characterized in that the spinning machine (1) at least one of its two front ends (2) and / or at the middle, between the two front ends (2) located a connection for energy supply and / or has an exhaust outlet.

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