Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H54/00—Winding, coiling, or depositing filamentary material
  • B65H54/86—Arrangements for taking-up waste material before or after winding or depositing
  • B65H54/88—Arrangements for taking-up waste material before or after winding or depositing by means of pneumatic arrangements, e.g. suction guns
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H57/00—Guides for filamentary materials; Supports therefor
  • B65H57/003—Arrangements for threading or unthreading the guide
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
  • D01D7/00—Collecting the newly-spun products
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/30—Handled filamentary material
  • B65H2701/31—Textiles threads or artificial strands of filaments
  • B65H2701/313—Synthetic polymer threads
  • B65H2701/3132—Synthetic polymer threads extruded from spinnerets
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
  • D01D13/00—Complete machines for producing artificial threads
  • D01D13/02—Elements of machines in combination

Definitions

• the invention relates to a method for applying a yarn sheet in a melt spinning process with at least one winding device according to the preamble of claim 1 and to an apparatus for applying a yarn sheet in a melt spinning process with at least one winding device according to the preamble of claim 6.
• a generic method and a generic device for applying a group of threads in a melt spinning process with at least one take-up device is known for example from DE 10 2011 016 786 AI.
• the suction device is preferably designed as a manually guided suction gun, so that a manual guidance of the yarn sheet is possible by a superimposed movement of the suction.
• the group of threads can be created according to a sequence of processes at godets and winding stations of a take-up device.
• an operator must take into account the thread guide provided in the process in order to obtain a trouble-free process startup.
• the yarn sheet is continuously withdrawn and sucked.
• control measures for maintaining a desired thread guide on the suction device are therefore also necessary.
• Another object of the invention is to make the generic method and the generic device for applying a group of threads repeatable and reproducible.
• the invention is based on the recognition that during an application process, various operating cycles are passed through, which in particular require different suction powers of the suction device. For example, a bundle of threads, which is placed on a rotating godet when it is being applied, requires a higher suction power in relation to a group of threads which is deflected stationarily on thread guides. If the thread tension is too low, rotating godets will cause undesirable winder formation.
• the operating pressure of the compressed air is changed as a function of the respective operating cycle.
• a control unit cooperates with the control valve of the suction device, so that each operating cycle when the yarn sheet is applied can be executed with a desired suction force on the yarn sheet.
• each drive cycles is assigned a predetermined operating pressure of the compressed air and that the operating pressures of the operating cycles are set by a control program. This sets in the suction at any time of the application process, a desired suction flow and suction for pulling and removing the yarn sheet.
• the method variant has proven particularly useful, in which the control program for changing the operating pressures of the compressed air is started by a control unit in response to an input signal.
• a compressed air profile can be automatically preset on the suction device in order to obtain the respective desired suction flow for guiding the yarn sheet.
• the development of the invention is preferably carried out in which a yarn tension on one of the threads of the yarn sheet during at least one of the operating cycles is measured and in which the operating pressure of the compressed air in response to a Thread tension reading is changed.
• the yarn sheet can be guided with a substantially constant yarn tension.
• the suction nozzle is kept stationary during at least one of the operating cycles.
• the inventive method for mobile or stationary suction is particularly suitable.
• the device according to the invention for applying a group of yarns has the particular advantage that both manually controlled or automated application processes can thus be carried out safely. Due to the suction force adapted to the respective operating cycle for receiving and removing the thread saw, different thread guides can be realized during the application process.
• the control unit has a processor for storing and executing a control program, by which one of several operating pressures of the compressed air is assigned to each of the operating cycles.
• the control valve can be controlled in accordance with the control program such that a desired suction force is present at the suction device for the respective operating cycle.
• control unit can preferably be controlled via a control key in order to trigger a start of the control program.
• control valve is associated with the suction device
• the development of the invention is preferably carried out, in which the control valve is wirelessly connected to the control unit.
• control valve it is also possible to assign the control valve stationary to the compressed air line. In this case, a wiring could be realized.
• the development of the device according to the invention is particularly advantageous, in which a measuring device for Measurement of a thread tension is provided on one of the threads of the yarn sheet, which is connected to the control unit.
• a measuring device for Measurement of a thread tension is provided on one of the threads of the yarn sheet, which is connected to the control unit.
• the suction device is designed as a mobile suction gun, which is performed manually by an operator or automatically by a robot.
• the suction device in principle, however, it is also possible to carry out the suction device as a stationary suction unit, which is assigned to the take-up device. It is essential that during the various application processes on the godets and winding positions, the desired suction forces for pulling and receiving the yarn sheet are set.
• FIG. 1 schematically an embodiment of the device according to the invention for applying a yarn sheet in a melt spinning process
• FIG. 2 schematically shows a view of an embodiment of a suction device for the device shown in FIG. 1
• FIG. Fig. 3 shows schematically a time course of an operating pressure of the suction device according to Figure 2 when applying.
• FIG. 1 schematically shows a first exemplary embodiment of the device according to the invention for applying a group of yarns in a melt-spinning process.
• a winding device 2 with a plurality of winding points 3.1 to 3.4 and a plurality of godets 11.1 to 11.3 arranged above the winding points 3.1 to 3.4 is schematically shown in FIG.
• the godets 11.1 to 11.3 are held cantilevered on a godet carrier 12, wherein the godet carrier 12 is supported on a machine frame 13 of the take-up device 2.
• the godets 11.1 to 11.3 are coupled to drives, which are not shown here.
• the winding device 2 has in this embodiment, a number of four winding points 3.1 to 3.4, in order to wind the yarn sheet 21 formed of four threads to form coils.
• the number of threads and the number of winding positions are exemplary.
• two winding spindles 4.1 and 4.2 are held cantilevered on a spool revolver 6.
• the winding spindles 4.1 and 4.2 are driven by separate spindle drives 5.1 and 5.1.
• the bobbin revolver 6 is coupled to a turret drive 6.1, so that the winding spindles 4.1 and 4.2 are alternately in an operating range and an alternating sel Suite are feasible. In the operating range, the winding spindles 4.1 and 4.2 cooperate with a pressure roller 7.
• a traversing device 8 For laying the threads, a traversing device 8 is provided, which has a traversing unit for each winding point 3.1 to 3.4.
• the traversing device 8 is preceded by a separate deflection roller 9.1 to 9.4 for each winding point 3.1 to 3.4.
• the pulleys 9.1 to 9.4 are freely rotatably supported on a displaceable roller carrier 10.
• the pulleys 9.1 to 9.4 are used to separate the yarn sheet 21, which are performed in operation with simple wraps on the godets 11.1 to 11.3.
• a mobile suction device 1 For applying and threading the threads of the yarn sheet 21, a mobile suction device 1 is provided by which an operator, not shown, the running threads for applying and threading to the godets 11.1 to 11.3 and the winding points 3.1 to 3.4 leads.
• the suction device 1 is designed here as a suction gun 15 and has a connection body 28, on which a pipe socket 14 is held.
• the pipe socket 14 forms at its free end a suction opening 18.
• Within the connecting piece 28 of the pipe socket 14 is connected to a waste line 19, so that adjusts a continuous suction channel.
• a compressed-air line 16 is connected to the connection body 28, the compressed-air line 16 opening into the suction channel via injector bores, not shown here.
• a control valve 17 is integrated on the connecting body 28, which is associated with the compressed air line 16 in order to change an operating pressure of the supplied compressed air.
• the control valve 17 is wirelessly connected to a control unit 23.
• the control unit 23 has a transmitter 24 and the control valve 17 has a receiver 25.
• the suction device 1 is connected via the waste line 19 with a waste container 20.
• the compressed air line 16 connects the suction device 1 with a compressed air source 22.
• the suction device 1 is in an operating cycle to apply the yarn sheet 21 to the pulleys 9.1 to 9.4.
• the suction device 1 is designed as a mobile suction gun 15, which is operated in this embodiment by an operator.
• the suction device 1 is used in different operating cycles to create the yarn sheet before a process start a melt spinning plant.
• a control program is started via the control unit 23.
• control unit 23 has a processor in which the operating pressures of the suction device 1 assigned to the operating cycles are stored and executed in accordance with the control program.
• a control button 30 is provided on a control panel 29. The operator can start the application process via the control key 30. In this case, the operating pressures given by the control program per operating cycle of the suction device 1 are abandoned.
• the roller carrier 10 After the separation has taken place, the roller carrier 10 is fixed in an operating position. Now, the suction gun 15 can be placed in a takeover position, in which auxiliary equipment, not shown here create the threads in the winding points 3.1 to 3.4. In this case, a change in the pressure setting on the suction device 1.
• FIG. 3 an exemplary embodiment of various pressure settings during the application process is schematically illustrated.
• FIG. 3 shows a diagram which represents an operating pressure of the compressed air on the ordinate and an operating time of the application of the yarn sheet on the abscissa.
• the application process is divided into a total of four operating cycles in this exemplary embodiment.
• a takeover of the yarn sheet by the suction device 1 takes place.
• the yarn sheet must be absorbed by the suction port of the pipe socket.
• the suction force at the suction opening of the pipe socket is especially high in the range of low operating pressures. Therefore, the operating pressure of the compressed air is set to the value pi.
• the operating cycle I is set via the control program over a time interval, which is indicated by ti to t 2 in FIG.
• a second cycle of operation could serve to create the yarn sheet on the circumference of the godets 11.1 to 11.3.
• the highest possible operating pressure is set at the suction device in order to obtain a correspondingly high yarn tension in the yarn sheet 21 via the highest possible suction force.
• the threads can be performed with sufficient thread tension on the circumference of the godets 11.1 to 11.3, so that a winding formation is avoided.
• the operating pressure of Compressed air in the suction device 1 is set to the value p 2 , as shown in Fig. 3.
• the yarn sheet is applied to the pulleys 9.1 to 9.4.
• a slightly lower operating pressure is required, which is characterized by p 3 in the operating cycle III.
• the time intervals which are identified by the code letters ti to t 5 , are different in length depending on the respective application situation and are specified by the control program.
• the time intervals of one of the operating cycles can also vary if the operation is determined by manual activities. So there is slow and fast operator.
• the yarn sheet is applied in the winding points 3.1 to 3.4.
• a maximum adjustment of the operating pressure at the suction device 1 is required.
• the operating pressure p 4 is set during the operating cycle IV.
• the pressure profile shown in Figure 3 for controlling the compressed air to the suction device 1 is exemplary. What is essential here is that a thread tension that is desired for the respective application process prevails.
• a measuring device 27 is shown in dashed lines in Figure 1.
• the measuring device 27 is upstream of the godets 11.1 to 11.3 in the yarn path, wherein the yarn tension is monitored at least at one of the threads.
• the measuring device 27 is connected to the control unit 23.
• the predetermined via the control valve 17 pressure settings on the suction device 1 can be controlled according to a thread tension.
• the suction device 1 shown in Figures 1 and 2 is also exemplary.
• suction guns 15 can also advantageously automated lead, for example by a robot arm.
• the control valve 17 is connected via a control line 31 to a control unit.
• the control line 31 is represented by broken lines for this purpose.
• control valve 17 is not associated with the suction device 1, but is formed stationary within the compressed air line 16.
• an embodiment of a control valve 17 is shown in dashed lines in Figure 1.
• the control valve 17 is arranged downstream of the compressed air source 26 in the illustrated embodiment, so that the compressed air line 16 is connected directly into the connection body 28 of the suction device 1.
• the suction device can also be formed by a stationary suction unit.
• Such stationary suction units can for example be assigned directly to the take-up device.
• Essential to the invention is that the operating pressure for generating a suction flow and for removing the yarn sheet depending on the respective operating cycle is changeable.
• the method according to the invention and the device according to the invention can be used both during a process start of a melt spinning process and after a process interruption in the melt spinning process.
• a group of threads can be taken over by the suction device immediately after piecing. It is also possible to take over the yarn sheet after a process interruption of a stationary suction device.

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• 2017
  • 2017-12-13 JP JP2019531821A patent/JP7030810B2/ja active Active
  • 2017-12-13 CN CN201780077575.5A patent/CN110072791B/zh active Active
  • 2017-12-13 DE DE112017006258.6T patent/DE112017006258A5/de active Pending
  • 2017-12-13 WO PCT/EP2017/082517 patent/WO2018108964A1/de active Application Filing

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