Title of Invention | DEVICE FOR PRODUCING, TREATING AND FURTHER PROCESSING SYNTHETIC FIBRES |
---|---|
Abstract | A device for producing, treating and further processing synthetic fibers with a plurality of processing stations is described. The processing stations are in this case set up in a process sequence and in each case have one or more driven process assemblies. The drives of the process assemblies contain electric motors which in each case act directly on the process assembly or indirectly on the process assembly by a gear being interposed. In this case, according to the invention, a plurality of electric motors are designed as permanent magnet motors for the direct drive of the assigned process assemblies, so that, as far as possible, process assemblies having high torque requirements can be operated at low rotational speeds flexibly for different applications. |
Full Text | Device for producing, treating and further processing synthetic fibers The invention relates to a device for producing, treating and further processing synthetic fibers according to the preamble of claim 1. To produce synthetic fibers and to treat them and further process them into fiber products, such as, for example, threads, spun cables, staple fiber, spunbonded fabrics or nonwovens, it is known to guide the fiber material through a process sequence in a plurality of processing stations. Within each processing station, one or more driven process assemblies are provided, so that the guidance and treatment of the fiber material can be carried out. Depending on requirements, in this case, the process assemblies are driven directly by an electric motor or indirectly by a gear being interposed. A design variant of a device of this type is known, for example, from EP 1 022 364 Al. Devices of this type are normally set up in a plurality next to one another in machine halls, so that a multiplicity of simultaneously driven process assemblies are operated and therefore appreciable noise pollution in the system as a whole occurs, which is detrimental, in particular, to handling work at the start of the process and to maintenance carried out by operators. Moreover, the process assemblies driven by means of a gear require a higher maintenance cycle which results in undesirable process interruptions. The object of the invention, therefore, is to provide a device for producing, treating and further processing synthetic fibers of the generic type, in which the process assemblies in the processing stations can be operated in an as environmentally friendly way as possible with low process interruptions. A further aim of the invention may be seen in equipping a generic device with as compact process assemblies as possible which can be used in a flexible way. The object is achieved, according to the invention, by means of a device having the features according to claim 1. Advantageous developments of the invention are defined by the features and feature combinations of the subclaims. The invention possesses the particular advantage that the proportion of process assemblies driven directly by an electric motor can be increased considerably. Thus, additional gears can be saved, since, in particular, permanent magnet motors are known for transmitting high torques at relatively low rotational speeds. Moreover, the process assemblies driven by a permanent magnet motor have higher dynamics and flexibility, so that different applications are possible without changes, such as, for example, an exchange of gears. So that the guidance speeds predetermined in the case of directly driven process assemblies can be maintained during the production, treatment and further processing of the fiber material, the permanent magnet motors are designed in each case as synchronous motors, in which a plurality of permanent magnets are arranged on a ring-shaped rotor. In this case, the diameter of the rotor in relation to its length is relatively large, so that a very short and compact construction variant of the electric motor is obtained. The high torques capable of being generated by the permanent magnet motor at low rotational speeds can in this case advantageously be transmitted by virtue of the development of the invention in which the synchronous motor has, for coupling a shaft portion to the rotor, a hollow shaft receptacle in which the shaft portion can be plugged. In this case, the shaft portion may be formed directly at one end of a drive shaft of one of the process assemblies. There is, however, also the possibility of forming the shaft portion plugged in the hollow shaft receptacle on an intermediate shaft which is connected to a drive shaft of one of the process assemblies via a gear means for the synchronous transmission of the drive rotational speed. Thus, depending on the installation possibilities and space requirement, individual drive solutions of the process assemblies can be implemented. To maintain a predetermined process speed, the development of the invention is particularly advantageous in which the permanent magnet motor is connected to a control apparatus which is coupled at least to a sensor means assigned to the process assembly. Thus, within the control apparatus, the actual value, sensed by the sensor means, of a drive rotational speed of the process assembly or, directly, a guidance speed can be balanced in each case with a predetermined desired value and regulated continuously. This especially ensures that the fiber material is delivered with the required process uniformity. To avoid overload phenomena, such as, for example, due to fiber laps on godet rollers, it is advantageous to arrange a clutch device in the drive train between the permanent magnet motor and the process assembly. In particular, steel multiple-disk clutches have proved appropriate in this case. For the production of staple fibers, in particular, the development of the invention can advantageously be adopted in which at least a plurality of process assemblies, such as, for example, an extruder, a spinning pump, a guide roller, a drawframe, a crimping device or a cutting device, are driven directly by permanent magnet motors. In the production of spunbonded fabric, the process assemblies, such as an extruder, a spinning pump, a depositing device, a calender or a fabric winding device, can preferably be driven directly by means of a permanent magnet motor. Some exemplary embodiments of the device according to the invention are described in more detail below with reference to the accompanying drawings, in which: fig. 1 illustrates diagrammatically a view of a first exemplary embodiment of the device according to the invention, fig. 2 illustrates diagrammatically a cross-sectional view of a process assembly of the exemplary embodiment from fig. 1, fig. 3 shows diagrammatically a side view of a process assembly of the exemplary embodiment from fig. 1, fig. 4 shows diagrammatically a view of a further process assembly of the exemplary embodiment from fig. 1, fig. 5 shows diagrammatically a cross-sectional view of a permanent magnet motor for the direct drive of a process assembly, fig. 6 shows diagrammatically a view of a further exemplary embodiment of the device according to the invention. Fig. 1 illustrates diagrammatically a first exemplary embodiment of a device according to the invention for the single-stage production of staple fibers. Devices of this type are generally known among specialists as compact spinning plants for the production of staple fibers consisting preferably of polypropylene. The compact spinning plants are operated at spinning speeds in the region of max. 250 m/min. Very high production capacities of up to 50 t/day can consequently be achieved. The exemplary embodiment of the device according to the invention has a plurality of processing stations which form a process sequence from a melt preparation 1 up to a cutting device 9 for cutting the synthetic fibers. The melt preparation 1 is followed by a spinning device 2, a take-up device 3, a drafting device 4, a spun cable laying device 5, a crimping device 6, a drying device 7 and a tension setting device 8 preceding the cutting device 9. Each of the processing stations has in each case one or more driven process assemblies. To generate a polymer melt, the melt preparation 1 contains an extruder 10 with an extruder drive 11. In this case, a polymer in the form of a granulate is fed to the extruder 10 and melted. The polymer melt melted by the extruder 10 is led via a pipe system to the next processing station of the spinning device 2. The spinning device 2 has a plurality of spinning stations 12.1, 12.2 and 12.3. The number of spinning stations of the exemplary embodiment shown in fig. 1 is by way of example. Each of the spinning stations 12.1, 12.2 and 12.3 is constructed identically, and therefore it is explained in more detail with reference to the spinning station 12.1. For the extrusion of a multiplicity of fiber strands, a preferably annular spinneret 15 is provided which on its underside has a multiplicity of nozzle bores. The spinneret 15 is connected to a spinning pump 13 which supplies a melt stream under pressure to the spinneret 15. For this purpose, the spinning pump 13 is driven directly by a pump drive 14. The spinnerets 15 of the spinning stations 12.1, 12.2 and 12.3 are arranged in a heated spinning beam. Below the spinnerets 15 is provided a cooling device 16 arranged essentially centrically with respect to the spinneret 15. The cooling device 16 is designed as a blow-on device in which a cooling air stream is generated from an annular blowing nozzle, so that the cooling air penetrates from the inside outward through the annular film formed by the fiber strands and leads to the cooling of the fiber strands. In the exemplary embodiment illustrated, the cooling air is supplied to the cooling device 16 from above through the spinning beam. It is also possible, however, to place the cooling air supply laterally next to the emerging fiber strands. For the guidance and treatment of the fiber strands which are identified by reference symbol 30 in the exemplary embodiment according to fig. 1, the spinning device 2 is followed by the take-up device 3. The take-up device 3 is located directly beneath the spinning device 2. The take-up device 3 has a plurality of preparation rollers 17 and take-up rollers 18. The preparation rollers 17 and the take-up rollers 18 are driven independently of one another. In this case, in particular, the take-up rollers 18 may be driven jointly by a group drive or separately by individual drives. The fiber strands 30 of the spinning stations 12.1, 12.2 and 12.3 are taken up by the take-up device 3 and deflected out of vertical guidance. The multiplicity of the fiber strands which are combined by the preparation rollers 17 and are designated as spun cables are subsequently taken over by a drafting device 4. The drafting device 4 has two drawframes 19.1 and 19.2 arranged one behind the other in the fiber running direction. A hot drafting duct 21 is arranged between the drawframes 19.1 and 19.2. Within the hot drafting duct 21, the fiber strands 30 can be brought to a predetermined temperature by means of hot air or by means of hot steam. Each of the drawframes 19.1 and 19.2 has in each case a plurality of drafting rollers 20 which guide the fiber strands 30 by simple looping. The drafting rollers 20 of the drawframes 19.1 and 19.2 are driven by a group drive, the drafting rollers 20 of the drawframe 19.2 being operated with respect to the drafting rollers 20 of -the drawframe 19.1 at a higher circumferential speed in order to set a specific drafting ratio. For the simultaneous thermal treatment of the fiber strands, the drafting rollers 20 of the two drawframes 19.1 and 19.2 may have, as required, a cooled roller casing or a heated roller casing. The design of the group drive for the drafting rollers 20 of the drawframes 19.1 and 19.2 is described in more detail below. After drafting, the spun cables guided next to one another are combined within the spun cable laying device 5 to form a tow. For this purpose, the spun cable laying device has a driven separating roller 22 in the entry region and a driven collecting roller 24 at the exit. A plurality of dividing rollers 23 are arranged one above the other between the separating roller 22 and the collecting roller 24, in order to guide the spun cables guided next to one another at the separating roller 22 into a common plane, so that the spun cables are combined at the collecting roller 24 to form a tow. The tow is subsequently compressed and crimped in the crimping device 6. For this purpose, the crimping device 6 has two driven crimping rollers 25 which are arranged one above the other to form a roller nip. A compression chamber 26 follows on the outlet side of the roller nip. The design of the group drive of the crimping rollers 25 is described in more detail below. After crimping, the fiber strands are delivered to the drying device 7 and are subsequently fed with a defined tension to the cutting device 9 by means of the tension setting device 8. The drying device 7 is formed by an oven 66 through which the fiber strands are led continuously. The tension setting device 8 has a plurality of driven guide rollers 27 in order to protect the fiber strands from the drying device. To cut the fibers, the cutting device 9 has provided in it a driven cutting head 28, by means of which the fiber strands 30 are cut into small pieces and received by a fiber collector 29. The drives, not illustrated in any more detail in fig. 1, of the individual process assemblies may be formed by individual drives or group drives, in which the process assembly is driven directly by an electric motor, or in which the process assembly is driven by a step-up gear being interposed. The device according to the invention, however, is distinguished, even in the case of low process speeds of this kind, by a plurality of directly driven process assemblies. In this respect, the drawframe 19.1 is illustrated in figs 2 and 3 in a plurality of views with a group drive 45. Fig. 2 shows the device in a cross-sectional view and fig. 3 in a side view. Inasmuch as there is no express reference made to one of the figures, the following description applies to both figures. Since the drawframes 19.1 and 19.2 of the exemplary embodiment according to fig. 1 are constructed essentially identically, the following explanation applies to both drawframes 19.1 and 19.2. It may be mentioned, however, at this juncture that the construction of the drawframes 19.1 could even be completely different, depending on the process. A plurality of drafting rollers 20.1 to 20.5 arranged so as to be offset with respect to one another are arranged on a stand wall 32. The drafting rollers 20.1 to 20.5 are held, projecting, on the stand wall 32 and are mounted rotatably in the stand wall 32 via drive shafts 31.1 to 31.5. Each of the drive shafts 31.1 to 31.5 has, on the bearing portion within the stand wall 2, a gearwheel 33.1 to 33.5 which is connected firmly to the circumference of the respective drive shaft 31.1 to 31.5. The gearwheels 33.1 to 33.5 are designed identically and are in engagement with one another. The drive shafts 31.1 to 31.5 project with a free end onto the rear side of the stand wall 2. This free end of the drive shafts 31.1 to 31.5 usually constitutes a connection possibility for the thermal control of the rollers. As is evident from fig. 2, the group drive 45 for driving the drafting rollers 20.1 to 20.5 has a. permanent magnet motor 34. The permanent magnet motor 34 is connected to an intermediate shaft 35 via a rotor shaft 39 and a coupling 38. The intermediate shaft 35 is mounted rotatably in the stand wall 32 and projects with the drive end on the rear side of the stand wall 32. Arranged on the circumference of the intermediate shaft 35 is a gearwheel 36 which is in engagement with a gearwheel 37. The gearwheel 37 is arranged on the circumference of the drive shaft 31.2. In the drawframe 19.1 illustrated in figs 2 and 3, the direct drive of the rollers 31.1 to 31.5 takes place in such a way that the intermediate shaft 35 is driven at a predetermined drive rotational speed directly by the rotor shaft 39 of the permanent magnet motor 34. The rotational movement of the intermediate shaft 35 is transmitted synchronously to the drive shaft 31.2. For this purpose, the gearwheels 36 and 37 which are in engagement are designed with an identical diameter. At the same time, the drive of the adjacent drive shaft 31.1 and 31.3 to 31.5 takes place by the transmission of the gearwheels 33.1 to 33.5. The drafting rollers 20.1 to 20.5 are thus driven at identical circumferential speeds directly by the permanent magnet motor 34. In the drawframe illustrated in figs 2 and 3, there is likewise the possibility of connecting the permanent magnet motor 34 directly to a free end of one of the drive shafts 31.1 to 31.5. In a design variant of this type, the interposition of an intermediate shaft would be dispensed with. Particularly in drawframes or take-up units in which the free end of the drive shafts do not have to have any connection possibilities, the direct tie-up of the permanent magnet motor is preferred. Basically, there is also the possibility of driving each of the drafting rollers by means of a separate permanent magnet motor. Thus, for example, in the crimping device 6 of the exemplary embodiment shown in fig. 1, the crimping rollers can be driven directly in each case by a permanent magnet motor. The crimping device 6 used in the exemplary embodiment according to fig. 1 is described in more detail in fig. 4. Fig. 1 illustrates a diagrammatic view of the crimping device. The crimping device 6 consists essentially of two crimping rollers 25.1 and 25.2 mounted rotatably in a machine stand 41 and of the compression chamber 2 6 following the crimping rollers 25.1 and 25.2. Fig. 4 shows the compression chamber 26 in a cross-sectional view. A roller nip 40 is formed between the upper crimping roller 25.1 and the lower crimping roller 25.2, so that the fiber material can be drawn in and crimped by kinking. Each of the crimping rollers 25.1 and 25.2 is coupled to a drive shaft 31.1 and 31.2. The 3rive shaft 31.1 of the upper crimping roller 25.1 is connected at a drive end directly to a permanent magnet notor 34.1. The lower crimping roller 25.2 is connected via the drive shaft 31.2 directly to a second permanent nagnet motor 34.2. To set the roller nip 40 between the crimping rollers 25.1 and 25.2, the distance between the crimping rollers 25.1 and 25.2 can be changed. For this purpose, preferably, the upper crimping roller 25.1 with the drive shaft 31.1 and with the permanent magnet motor 34.1 is held in the machine stand 41 adjustably in relation to the lower crimping roller 25.2. The mechanical means required for holding and guiding the upper crimping roller 25.1 are not illustrated in fig. 4 and are not described in any more detail at this juncture. Conventionally, for this purpose, the crimping roller 25.1 is held on a pivoting carrier which can be guided by a piston/cylinder unit. In this case, the piston/cylinder unit serves for holding the upper crimping roller 25.1 in an operating position determining the roller nip 40. For controlling the permanent magnet motors 34.1 and 34.2, each motor 34.1 and 34.2 is preceded in each case by a control apparatus 42.1 and 42.2 coupled to the motors. The control apparatuses 42.1 and 42.2 are assigned sensor means 43.1 and 43.2 which detect the rotational speeds or rotor position of the motors 34.1 and 34.2. For the stipulation of process settings, a control unit 44 precedes the control apparatuses 42.1 and 42.3. To operate the crimping device illustrated in fig. 4, a desired stipulation of the drive rotational speed is imparted to the control apparatuses 42.1 and 42.2 via the control unit 44, so that the two permanent magnet motors 34.1 and 34.2 drive the assigned drive shafts 31.1 and 31.2 with identical settings. The crimping rollers 25.1 and 25.2 are driven at identical circumferential speeds. The control of the permanent magnet motors 34.1 and 34.2 is monitored by sensor means 43.1 and 43.2. The sensor means 43. 1 and 43.2 could be designed as position transmitters or rotational speed sensors. The permanent magnet motors 34 . 1 and 34.2 are preferably designed as synchronous motors in order to drive the rollers at constant circumferential speeds. The exemplary embodiment of the crimping device, as illustrated in fig. 4, is distinguished by a direct drive of the crimping rollers, so that no additional mechanical means for stepping up or for coupling the drive shafts are required. The crimping device is consequently designed with a particularly compact and essentially maintenance-free group drive. In this case, the permanent magnet motors could also be replaced by sensorless variants in which the motors are controlled by means of software. Fig. 5 illustrates a possible construction variant of a permanent magnet motor in the form of a synchronous motor in a cross-sectional view, such as could be used, for example, for driving the drafting rollers 20 or the crimping rollers 25. The permanent magnet motor, which is also known as what may be referred to as a torque motor, has a hollow shaft receptacle 48 in which is plugged a shaft portion 54 of a drive shaft, for example of the drive shaft 31.1 of a crimping roller. The hollow shaft receptacle 48 is formed in a housing 46 of the permanent magnet motor. A ring-shaped stator 47 is fastened in the housing 46. The stator 47 surrounds a rotor 51 of ring-shaped design which is located within the stator 47 and which carries on the circumference a plurality of permanent magnets arranged next to one another. Fig. 5 shows the permanent magnets 52.1 and 52.2. The rotor 51 is mounted rotatably in the housing 46 by means of the mounting 49. The rotor 51 is connected on one end face firmly to a collar of an annular bush 50. The annular bush 50 is coupled fixedly in terms of rotation to the circumference of the shaft portion 54. The shaft portion 54 is mounted in the housing 46 by means of the mounting 53. The permanent magnet motor illustrated in fig. 5 and designed as synchronous motor constitutes a preferred drive variant for the direct drive of rollers- The use of permanent magnets with a constant magnetic flux in the air gap allows a high power output at low rotational speeds. The permanent magnet motor is therefore particularly suitable for directly driving the process assemblies in the exemplary embodiment of the device according to the invention, as illustrated in fig. 1. There is therefore the possibility of using the permanent magnet motor illustrated in fig. 5 for directly driving an extruder worm of an extruder, a drive shaft of a spinning pump or a cutting head of a cutting device. Extremely compact process assemblies which are essentially maintenance-free due to the type of construction of the drive can consequently be implemented, so that the device according to the invention, as an overall system, has high productivity because of the small number of maintenance cycles. Moreover, the high proportion of directly driven process assemblies makes it possible to have a greater free space, so that process changes in the production and treatment of fiber material can be carried out. Fig. 6 illustrates diagrammatically a further exemplary embodiment of a device according to the invention. In this case, the processing stations arranged one behind the other in a work sequence are utilized in order to produce a spunbonded fabric from a fed plastic material. The processing stations and process assemblies have in this case kept identical reference symbols, to the extent that their function is identical to the preceding exemplary embodiment. The device has a melt preparation 1, a spinning device 2, a depositing device 55, a calender device 56 and a fabric winding device 57. In the spinning device 2, a plastic granulate is melted by an extruder 10, driven via an extruder drive 11, and is supplied as a polymer melt to the spinning device 2 via a line system. The spinning device 2 has a spinning head 63 with a spinneret designed essentially in an arrangement in the form of a row. Beneath the spinning head 63 is provided a take-up nozzle 64 in order to take up the fiber strands extruded through the spinneret bores and convey them to a depositing device 55. The depositing device 55 consists of a driven conveyor belt 58 which is guided via drive rollers 59. A calender device 56 for consolidating the thermoplastic fabric, which has a plurality of driven calender rollers 60, is arranged at the end of the conveyor belt 58. The calender device 56 is followed by a fabric winding device 57 having a driven package carrier 61 which is held rotatably in a machine stand. The exemplary embodiment of the device according to the invention, as shown in fig. 6, is intended for production of a spunbonded fabric. In this case, the melt-spun fiber strands 30 are deposited in the form of a curtain of predetermined width so as to produce a fabric 62. The fabric 62, after being deposited by the conveyor belt 58, is led to the calender device 56. Between the driven calender rollers 60 are formed roller nips through which the fabric is led for consolidation. After consolidation, the fabric 62 is wound into a fabric package 65. To drive the conveyor belt 58 and to drive at least one calender roller 60, a permanent magnet motor 34 is provided in each case. Thus, according to the exemplary embodiment in fig. 5, the permanent magnet motor 34 can be tied up directly to a drive shaft of the drive rollers 59 or the drive shaft of the calender roller 60. It is likewise possible that the package carrier 61 is driven directly by a permanent magnet motor. The exemplary embodiments of the device according to the invention which are illustrated in figs 1 and 6 are by way of example in their type and in the work sequence of the processing stations and type of construction of the process assemblies. There is basically the possibility of carrying out the work sequences for producing staple fibers by means of two separate processes. In this case, in a first process step, a spun cable is generated and deposited into a can. In a process step, a plurality of spun cables are taken up from cans and cut as tow into fibers. For drafting the fiber strands, these may also be guided with multiple looping over drafting rollers. The device according to the invention is distinguished by a particularly low-noise overall system which exhibits high process uniformities in the guidance of the fiber material on account of the good regulating properties of the direct drives. List of reference symbols 1 Melt preparation 2 Spinning device 3 Take-up device 4 Drafting device 5 Spun cable laying device 6 Crimping device 7 Drying device 8 Tension setting device 9 Cutting device 10 Extruder 11 Extruder drive 12.1, 12.2, 12.3 Spinning station 13 Spinning pump 14 Pump drive 15 Spinneret 16 Cooling device 17 Preparation rollers 18 Take-up rollers 19.1, 19.2 Drawframe 20 Drafting rollers 21 Hot drafting duct 2 2 Separating rollers 23 Dividing rollers 24 Collecting rollers 25.1, 25.2 Crimping rollers 2 6 Compression chamber 27 Guide rollers 28 Cutting head 29 Fiber collector 30 Fiber strand 31.1, 31.2 ... 31.5 Drive shaft 32 Stand wall 33.1 ... 33.5 Gearwheel 34, 34.1, 34.2 Permanent magnet motor 35 Intermediate shaft 36 Gearwheel 37 Gearwheel Coupling Rotor shaft Roller nip Machine stand Control apparatus Sensor means Control unit Group drive Housing Stator Hollow shaft receptacl Bearing Annular bush Rotor Permanent magnet Bearing Shaft portion Depositing device Calender device Fabric winding device Conveyor belt Drive rollers Calender rollers Package carrier Fabric Spinning head Take-up nozzle Fabric package Oven Patent claims 1. A device for producing, treating and further processing synthetic fibers, with a plurality of processing stations (1 ... 9) which are set up in a process sequence and in each case have one or more driven process assemblies (10, 13, 19), the drives (11, 14, 45) of the process assemblies (10, 15, 19) having electric motors (34) which in each case act directly on the process assembly (10, 14) or indirectly on the process assembly (19) by a gear being interposed, characterized in that a plurality of electric motors are designed as permanent magnet motors (34) for the direct drive of the assigned process assemblies (19.1, 19.2). 2. The device as claimed in claim 1, characterized in that the permanent magnet motors (34) are designed in each case as a synchronous motor in which a plurality of permanent magnets (52.1, 52.2) are arranged on a ring-shaped rotor (51). 3. The device as claimed in claim 2, characterized in that the synchronous motor (34) has, for coupling a shaft portion (54) to the rotor (51), a hollow shaft receptacle (48) in which the shaft portion (54) can be plugged. 4 . The device as claimed in claim 3, characterized in that the shaft portion (54) is formed directly at one end of a drive shaft (31.1) of one of the process assemblies (25.1). 5. The device as claimed in claim 3, characterized in that the shaft portion (54) is formed on an intermediate shaft (35) which is connected at an opposite end to a drive shaft (31.2) of one of the process assemblies (20.2). 6. The device as claimed in one of claims 1 to 5, characterized in that the permanent magnet motor (34.1) is connected to a control apparatus (43.1), and in that the permanent magnet motor (34.1) is assigned a sensor means (43.1), which sensor means (43.1) is connected to the control apparatus (42.1). 7. The device as claimed in one of claims 1 to 6, characterized in that a clutch device (38) is arranged in the drive train between the permanent magnet motor (34) and the process assembly. 8. The device as claimed in one of claims 1 to 7, characterized in that the process assembly connected to the permanent magnet motor (34) is a spinning pump (13) , a guide roller (18, 27) , a drawframe (19) , a crimping roller (25) and/or a cutting head (28). 9. The device as claimed in one of claims 1 to 7, characterized in that the process assembly connected to the permanent magnet motor (34) is an extruder (10), a spinning pump (13), a drive shaft (59), a calender roller (60) and/or a fabric package carrier (61). |
---|
3036-CHENP-2007 AMENDED PAGES OF SPECIFICATION 27-05-2011.pdf
3036-CHENP-2007 AMENDED CLAIMS 27-05-2011.pdf
3036-chenp-2007 correspondence others 22-06-2011.pdf
3036-chenp-2007 form-3 22-06-2011.pdf
3036-CHENP-2007 CORRESPONDENCE 31-08-2010.pdf
3036-chenp-2007 correspondence others 27-05-2011.pdf
3036-CHENP-2007 FORM-3 27-05-2011.pdf
3036-chenp-2007-correspondnece-others.pdf
3036-chenp-2007-description(complete).pdf
Patent Number | 248515 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Indian Patent Application Number | 3036/CHENP/2007 | |||||||||
PG Journal Number | 29/2011 | |||||||||
Publication Date | 22-Jul-2011 | |||||||||
Grant Date | 21-Jul-2011 | |||||||||
Date of Filing | 09-Jul-2007 | |||||||||
Name of Patentee | SAURER GMBH & CO. KG | |||||||||
Applicant Address | LANDGRAFENSTRASSE 45, D-41069 MONCHENGLADBACH, GERMANY. | |||||||||
Inventors:
|
||||||||||
PCT International Classification Number | D01D 13/00 | |||||||||
PCT International Application Number | PCT/EP05/13227 | |||||||||
PCT International Filing date | 2005-12-09 | |||||||||
PCT Conventions:
|