SPINNING MACHINE AND METHOD

Abstract

A textile machine that can comprise a first negative pressure point for producing a thread, a second negative pressure point for sucking in the thread and a negative pressure system which can be designed and arranged to be brought into a fluidic connection with the first negative pressure point. Alternatively, the first negative pressure system can be designed and arranged to be in a fluidic connection with the first negative pressure point. The textile machine can comprise a second negative pressure system that can be brought into a fluidic connection with the second negative pressure point. Alternatively, the second negative pressure system can be designed and arranged to be in fluidic connection with the second negative pressure point. A connection between the first negative pressure system and the second negative pressure system is designed such that the connection can be selectively established or interrupted.

Claims

1. A textile machine comprising: at least one first negative pressure point for producing a thread; at least one second negative pressure point for sucking in the thread; at least one first negative pressure system that is designed and arranged in order to be brought into a fluidic connection with the at least one first negative pressure point or is designed and arranged in order to be in a fluidic connection with the at least one first negative pressure point; and at least one second negative pressure system that is designed and arranged in order to be brought into a fluidic connection with the at least one second negative pressure point or is designed and arranged in order to be in a fluidic connection with the at least one second negative pressure point; wherein a connection is formed between the first negative pressure system and the second negative pressure system in such a way that the connection can be selectively established or interrupted.

2. The textile machine according to claim 1, wherein the at least one first negative pressure point comprises a spinning apparatus for producing the thread.

3. The textile machine according to claim 1, wherein the at least one second negative pressure point for sucking in the thread comprises at least one of the following: a suction nozzle for picking up the thread from a take-up bobbin; a thread storage nozzle for picking up the thread; and a working element that can be subjected to negative pressure.

4. The textile machine according to claim 1, wherein the connection between the at least one first negative pressure system and the at least one second negative pressure system is arranged in at least one of the following regions: a negative pressure source chamber; a filter chamber; and a negative pressure channel.

5. The textile machine according to claim 1, wherein the connection between the at least one first negative pressure system and the at least one second negative pressure system can be adjusted.

6. The textile machine according to claim 1, wherein the connection between the at least one first negative pressure system and the at least one second negative pressure system can be adjusted via at least one of the following: at least one control device; and at least one frequency converter; in each case designed and configured in order to control at least one negative pressure source.

7. The textile machine according to claim 1, wherein the connection is designed and arranged in order to be automatically adjusted as a function of respective operating states of the at least one first negative pressure system and the at least one second negative pressure system.

8. The textile machine according to claim 1, wherein the connection is designed and arranged in order to adjust a fluid flow by a fluid flow adjustment apparatus.

9. A method for allocating negative pressure for the textile machine according to claim 1, comprising: actuating at least one fluid flow adjustment apparatus in order to adjust a fluid flow between the at least one first negative pressure system and the at least one second negative pressure system in order to adjust the connection between the at least one first negative pressure system and the at least one second negative pressure system.

10. A control device, which is designed in order to carry out the method according to claim 9 and/or is designed and configured for a textile machine comprising: at least one first negative pressure point for producing a thread; at least one second negative pressure point for sucking in the thread; at least one first negative pressure system that is designed and arranged in order to be brought into a fluidic connection with the at least one first negative pressure point or is designed and arranged in order to be in a fluidic connection with the at least one first negative pressure point; at least one second negative pressure system that is designed and arranged in order to be brought into a fluidic connection with the at least one second negative pressure point or is designed and arranged in order to be in a fluidic connection with the at least one second negative pressure point; wherein a connection is formed between the at least one first negative pressure system and the at least one second negative pressure system in such a way that the connection can be selectively established or interrupted.

11. The textile machine according to claim 1, wherein the connection comprises a bypass connection.

Description

[0054] In the following, exemplary embodiments of the invention are described in more detail with reference to figures, showing schematically and by way of example:

[0055] FIG. 1 a schematic representation of a first embodiment of a textile machine;

[0056] FIG. 2 a schematic representation of a second embodiment of a textile machine;

[0057] FIG. 3 a schematic representation of a third embodiment of a textile machine; and

[0058] FIG. 4 a schematic representation of an embodiment of a method.

[0059] The same reference signs are used for elements and structures having the same effect and/or of the same type.

[0060] FIG. 1 shows a schematic representation of a first embodiment of a textile machine 18. The textile machine 18 can in particular be a spinning machine, further in particular a rotor spinning machine.

[0061] The textile machine 18 can comprise at least one first negative pressure point 11 for producing a thread. This first negative pressure point 11 can in particular be a spinning apparatus, in particular a spinneret. Thus, the first negative pressure point 11 is used in particular for spinning a thread.

[0062] The textile machine 18 canadditionally or alternativelycomprise at least one second negative pressure point 12 for sucking in the thread. This second negative pressure point 12 for sucking in the thread can comprise at least one suction nozzle for picking up an upper thread from a bobbin, in particular in the form of a cross-wound bobbin. Alternatively or additionally, the second negative pressure point 12 for sucking in the thread can comprise a thread storage nozzle for picking up a thread. Alternatively or additionally, the second negative pressure point 12 can comprise a working element that can be subjected to negative pressure. In particular, this working element can comprise a thread splicing apparatus that can be designed and arranged in order to unravel a thread end again after a thread breakage in order to enable renewed piecing.

[0063] The textile machine 18 comprisesadditionally or alternativelyat least one first negative pressure system 1, which is designed and arranged in particular to be able to be brought into a fluidic connection 13 with the first negative pressure point 11. Alternatively, the first negative pressure system 1 can be designed and arranged in order to be in a fluidic connection 13 with the first negative pressure point 11, in particular permanently.

[0064] The textile machine 18 comprisesadditionally or alternativelyat least one second negative pressure system 3, which is designed and arranged in particular to be able to be brought into a fluidic connection 14 with the second negative pressure point 12. Alternatively, the second negative pressure system 3 can be designed and arranged in order to be in a fluidic connection 14 with the second negative pressure point 12, in particular permanently.

[0065] The textile machine can selectively establish or interrupt a connection 15, 16, 17, in particular as a bypass connection, a cross-connection or a transverse connection, between the first negative pressure system 1 and the second negative pressure system 3 by means of a fluid flow adjustment apparatus 19.

[0066] As a result, the installed power of the first negative pressure source 2 can be kept within limits by selecting a fan of limited size for collecting upper threads. Resources can be saved in this way. Nevertheless, a higher number of simultaneous piecers (working elements or parts of a work station for piecing) can be ensured as active second negative pressure points 12 or active working elements for piecing a thread than the power of a second negative pressure source 4 alone could provide. As a result, a connection 15, 16, 17 can be designed in such a way that a fluidic connection between the two negative pressure systems can be adjusted. The connection 15, 16, 17 between the first negative pressure system 1 and the second negative pressure system 3 can be adjusted.

[0067] The second negative pressure point 12 for sucking in the thread has, in particular, a suction nozzle for picking up an upper thread from a bobbin, in particular from a cross-wound bobbin. This can be a thread storage nozzle for picking up a thread. Alternatively or additionally, it can be a working element that can be subjected to negative pressure, as described elsewhere.

[0068] The connection 15, 16, 17 between the first negative pressure system 1 and the second negative pressure system 3 can be adjusted in particular via at least one control device 5. Alternatively or additionally, the first negative pressure system 1 can be adjusted at least via a frequency converter 7. This frequency converter 7 is designed and configured in particular to control at least one negative pressure source 2, 4. For reasons of clarity, any cable connections (as a form of communication channel) are not shown here. Wireless applications are also possible.

[0069] The connection 15, 16, 17 is designed and arranged in particular in order to be adjusted automatically as a function of the respective operating states of the negative pressure systems 1, 3. This adjustment can be effected in particular by opening or closing the valve completely or partially.

[0070] The connection 15, 16, 17 is in particular designed and arranged in order to adjust a fluid flow by means of a fluid flow adjustment apparatus 19, in particular in order to at least partially close it. A fluid flow adjustment apparatus 19 can consist in particular of an adjustable valve, an adjustable slide valve and/or an adjustable bypass between the two (air-carrying) negative pressure channels (spinning channel and air channel for collecting upper threads and/or a pneumatic thread storage unit). Adjustment can be effected selectively via the correspondingly programmed machine controller or alternatively via one of the two frequency converters 7 that actuate the negative pressure sources 2, 4. For this purpose, the frequency converter 7 of the first negative pressure source 2 can communicate with the frequency converter 7 (not shown here as a separate apparatus for reasons of clarity) of the second negative pressure source 4. This additional regulation makes it possible to avoid installing additional power or correspondingly more powerful (or larger) negative pressure sources 2, 4, which would increase costs but would only be used occasionally, for example in the case of high requirements. For this reason, the resources required to set up a textile machine are reduced. In embodiments, the requirement for the negative pressure to be applied is particularly similar. As a result, a bypass connection with a basic fluid flow can also be kept permanently open in some embodiments.

[0071] The embodiments described here allow in particular that if, based on the requirement on the individual negative pressure systems 1, 3, one of the installed negative pressure sources 2, 4 (also called negative pressure drives) for the generation of negative pressure runs significantly below a power limit, the respective other negative pressure source 2, 4 can be supported with the use of a connection 15, 16, 17 between the negative pressure systems 1, 3 with a still available power reserve of one of the negative pressure sources 2, 4 of a first negative pressure system 1 or a second negative pressure system 3. For example, a number of simultaneous upper thread processes and/or simultaneous piecing processes could be additionally enabled, which the respective installed negative pressure source 4 could not guarantee alone for sucking in an upper thread (also referred to as upper thread handling) as long as the negative pressure source 2 still has power reserves for the spinning vacuum.

[0072] The allocation of negative pressure can be further improved, in particular by eliminating a complete separation between the two negative pressure systems 1, 3, by creating a connection 15, 16, 17 that can be set, in particular in the form of a bypass that can be set, between the two negative pressure systems 1, 3.

[0073] In particular, this connection 15, 16, 17 can be opened or closed fully or partially automatically as a function of the respective operating states of the negative pressure systems 1, 3. In particular, this can be effected in an adjustable manner, as described elsewhere.

[0074] FIG. 1 shows in particular a textile machine 18, wherein the connection 15, 16, 17, as well as a fluid flow adjustment apparatus 19 assigned to this connection 15, is arranged between the first negative pressure system 1 and the second negative pressure system 3 in the region of a negative pressure source chamber 6, 8. The negative pressure source chamber 6, 8 can be a fan chamber in particular. In particular, a fan is designed in such a way as to create a negative pressure at one of the negative pressure points 11, 12 by means of an air flow via the associated negative pressure channel 13, 14. In particular, fluidic communication is formed between the first or second negative pressure source 2, 4 and the first or second negative pressure point 11, 12. As a result, a fluid connection can be formed upstream in order to simulate the use of a single negative pressure source, as described elsewhere.

[0075] FIG. 2 shows a schematic representation of a second embodiment of a textile machine 18. According to the embodiment shown, the connection 16 can be arranged between the first negative pressure system 1 and the second negative pressure system 3 in the region of the fiber filter chamber 9 and the thread filter chamber 10. The fiber filter chamber 9 is used in particular for filtering fiber fragments from a spinning process. A filter apparatus can also be provided (not shown here). Additionally or alternatively, a fiber collecting container (not shown) can be provided in order to collect fibers and fiber fragments that can accrue as remnants from a spinning process. The thread filter chamber 10 is used in particular for filtering thread fragments, for example upon piecing. A thread collection container (not shown) can also be provided in order to collect the thread fragments that can accrue in the event of thread breakage and/or upon piecing. As a result, a fluidic connection 16 can be designed in such a way as to improve filtering, as described elsewhere.

[0076] FIG. 3 shows a schematic representation of a third embodiment of a textile machine 18. According to the embodiment shown, the connection 17 can be arranged between the first negative pressure system 1 and the second negative pressure system 3 in the region of at least one of the negative pressure channels 13, 14. In particular, a connection 17 can be established downstream in order to locate a fluidic communication close to the negative pressure points 11, 12. As a result, an adjustment of the connection 17 can be directly adapted to the requirements of the operation of the negative pressure points 11, 12.

[0077] FIG. 4 shows a schematic representation of an embodiment of a method 20 for allocating negative pressure. The method 20 can comprise the step of the recording 22 of at least one item of information regarding an operating state of at least one negative pressure point 11, 12. The method 20 can comprise the step of the provision 24 of at least one control signal generated based on information regarding an operating state of at least one negative pressure point 11, 12. The method 20 can comprise the step of the actuation 26 of at least one fluid flow adjustment apparatus 19 in order to adjust a fluid flow between a first negative pressure system 1 and a second negative pressure system 3 by adjusting the connection 15, 16, 17 between the first negative pressure system 1 and the second negative pressure system 3, in particular in order to at least partially close it.

[0078] Can in particular refers to optional features of the invention. Accordingly, there are also developments and/or exemplary embodiments of the invention which additionally or alternatively have the respective feature or the respective features.

[0079] From the combinations of features disclosed in the present case, isolated features can also be taken as needed and used by resolving a structural and/or functional relationship possibly existing between the features in combination with other features for delimiting the subject matter of the claim.

LIST OF REFERENCE SIGNS

[0080] 1 First negative pressure system [0081] 2 First negative pressure source [0082] 3 Second negative pressure system [0083] 4 Second negative pressure source [0084] 5 Control device [0085] 6 First negative pressure source chamber [0086] 7 Frequency converter [0087] 8 Second negative pressure source chamber [0088] 9 First filter chamber/fiber filter chamber [0089] 10 Second filter chamber/thread filter chamber [0090] 11 First negative pressure point [0091] 12 Second negative pressure point [0092] 13 First negative pressure channel as a fluidic connection between the first negative pressure point and the first negative pressure source [0093] 14 Second negative pressure channel as a fluidic connection between the second negative pressure point and the second negative pressure point [0094] 15 Fluidic connection in the region of a negative pressure source chamber [0095] 16 Fluidic connection in the region of a filter chamber [0096] 17 Fluidic connection in the region of a negative pressure channel [0097] 18 Textile machine [0098] 19 Fluid flow adjustment apparatus [0099] 20 Method for allocating a negative pressure [0100] 22 Recording of at least one item of information regarding an operating state of at least one negative pressure point [0101] 24 Provision of at least one control signal [0102] 26 Actuation of at least one fluid flow adjustment apparatus