阅读说明：本技术 纺纱机或绕线机以及操作纺纱机或绕线机的方法 (Spinning or winding machine and method for operating a spinning or winding machine ) 是由 R·哈格尔 于 2019-08-12 设计创作，主要内容包括：一种纺纱机或绕线机,包括至少一个气动装置(7),所述气动装置包括供给管道(8)、调节管道(9)、阀系统(10)、压力计(13)和数据处理单元(14),其中所述调节管道(9)与所述压力计(13)连接。与所述压力计(13)和所述阀系统(10)连接的所述数据处理单元(14)被构建为：如果所述工作压力(P<Sub>2</Sub>)小于第一预设值,开启所述第一阀(11)或所述第一通路(17)并关闭所述第二阀(12)或所述第二通路(18)；如果所述工作压力(P<Sub>2</Sub>)大于所述第一预设值或第二预设值,开启所述第二阀(12)或所述第二通路(18)并关闭所述第一阀(11)或所述第一通路(17),其中所述第一压力(P<Sub>1</Sub>)大于所述工作压力(P<Sub>2</Sub>)。(Spinning or winding machine comprising at least one pneumatic device (7) comprising a supply duct (8), a regulating duct (9), a valve system (10), a pressure gauge (13) and a data processing unit (14), wherein said regulating duct (9) is connected with said pressure gauge (13). Said number connected to said pressure gauge (13) and to said valve system (10)The processing unit (14) is configured to: if the working pressure (P) 2 ) Less than a first preset value, opening said first valve (11) or said first passage (17) and closing said second valve (12) or said second passage (18); if the working pressure (P) 2 ) Greater than said first or second preset value, opening said second valve (12) or said second passage (18) and closing said first valve (11) or said first passage (17), wherein said first pressure (P) is 1 ) Greater than said working pressure (P) 2 )。)

1. Spinning or winding machine comprising at least one pneumatic device (7) comprising a device for a first pressure (P)₁) For the working pressure (P), a supply line (8) of₂) A regulating pipe (9), a valve system (10), a pressure gauge (13) and a data processing unit (14), wherein the regulating pipe (9) is connected with the pressure gauge (13) such that the working pressure (P) is₂) Is detected by said pressure gauge (13), characterized in that,

the valve system (10) comprises a first passage (17) of a first valve (11) or a multi-way valve (16) connected to the supply line (8) for conveying pressure medium into the regulating line (9), and a second valve (12) or a second passage (18) of a multi-way valve (16) connected to the surrounding atmosphere for discharging the pressure medium from the regulating line (9),

wherein the data processing unit (14) connected with the pressure gauge (13) and the valve system (10) is constructed to:

if the working pressure (P)₂) Less than a first preset value, opening said first valve (11) or said first passage (17) and closing said second valve (12) or said second passage (18);

if the working pressure (P)₂) Greater than said first or second preset value, opening said second valve (12) or said second passage (18) and closing said first valve (11) or said first passage (17), wherein said first pressure (P) is₁) Greater than said working pressure (P)₂)。

2. Spinning or winding machine according to claim 1, characterized in that the data processing unit (14) is also constructed to be at the working pressure (P)₂) Equal to said first preset value or said working pressure (P)₂) Between the first and second preset values, closing the first valve (11) or the first passage (17) and closing the second valve (12) or the second passage (18).

3. Spinning or winding machine according to any of the previous claims, characterized in that the supply duct (8) is connected to a source of compressed air.

4. Spinning or winding machine according to any of the previous claims, characterized in that the data processing unit (14) is in control connection with a central machine controller.

5. Spinning or winding machine according to any one of the previous claims, characterised in that said valve system (10) and said pressure gauge (13) are arranged on a common circuit board (15).

6. Spinning or winding machine according to any one of the preceding claims, characterized in that the first passage (17) and the second passage (18) extend inside one multiple-way valve (16) or inside different multiple-way valves (11, 12).

7. Spinning or winding machine according to one of the preceding claims, characterized in that it has a plurality of working points (1) arranged side by side, which are combined into sections, and several pneumatic devices (7), wherein in each section at least one of the several pneumatic devices (7) is provided.

8. Spinning or winding machine according to any one of the previous claims, characterized in that each of said stations has two station sides and each station side corresponds to one of said plurality of pneumatic devices (7).

9. Spinning or winding machine according to any of the previous claims, characterized in that the working points (1) each have a pneumatic reel loading device (5) comprising one pneumatic cylinder (6) each.

10. Spinning or winding machine according to any of the previous claims, characterised in that the pneumatic cylinders (6) are each connected to one of the pneumatic devices (7).

11. Method for operating a spinning or winding machine, wherein the working pressure (P) in the regulating duct (9) of the pneumatic device (7) of the spinning or winding machine is adjusted₂) Is regulated, wherein the working pressure (P)₂) Is detected by a pressure gauge (13) and is compared with at least one preset value by a data processing unit (14), characterized in that,

if the working pressure (P)₂) Less than a first preset value, will be applied to the first pressure (P)₁) A first passage (17) of a first valve (11) or a multi-way valve (16) connected to the supply line (8) for conveying pressure medium into the regulating line (9) is opened and a second passage (18) of a second valve (12) or a multi-way valve (16) connected to the surrounding atmosphere for discharging pressure medium from the regulating line (9) is closed, and

if the working pressure (P)₂) Greater than said first or second preset value, opening said second valve (12) or said second passage (18) and closing said first valve (11) or said first passage (17), wherein said first pressure (P) is₁) Greater than said working pressure (P)₂)。

12. Method according to claim 11, characterized in that if said working pressure (P) is present₂) Equal to the first preset value or between the first preset value and the second preset value, closing the first valve (11) or the first passage (17) and closing the second valve (12) or the second passage (18).

13. Method according to any one of the preceding claims, characterized in that the working pressure (P) of the regulating duct (9) is regulated by means of said regulating duct (9)₂) To operate the pneumatic cylinder (6).

14. Method according to any of the preceding claims, characterized in that the reel is mechanically loaded by means of said pneumatic cylinder (6).

Technical Field

The invention relates to a spinning machine or a winding machine, comprising at least one pneumatic device, which comprises a supply conduit for a first pressure, a regulating conduit for a working pressure, a valve system, a pressure gauge and a data processing unit, wherein the regulating conduit is connected with the pressure gauge such that the working pressure is detected by the pressure gauge.

The invention also relates to a method for operating a spinning machine or a winding machine, wherein the working pressure in the regulating pipe of the pneumatic device of the spinning machine or winding machine is regulated, wherein the working pressure is detected by a pressure gauge and compared with at least one preset value by a data processing unit.

Background

Spinning machines for processing slivers into threads are well known. The working methods of these machines include ring spinning, rotor spinning or air jet spinning. Regardless of the spinning method, spinning machines generally comprise a winding unit in which the finished yarn is wound onto a reel. Winding machines are also known, for example, which rewind a wire from one reel to another. Winding machines and winding assemblies for spinning machines usually have pneumatically operated components, such as the reel loading device (spulenbelastingsvorrichtung) described in DE10062937B 4. In this case, the drive roller is pressed pneumatically (for example by means of a pneumatic cylinder) against the reel with a variable pressing force. Furthermore, modern spinning or winding machines have a large number of operating points which are sometimes operated independently. The pressure regulation of the pneumatic components is often centralized here, which makes it difficult to adapt to individual operating conditions at each operating point or to different areas of the spinning machine or winding machine.

Disclosure of Invention

The object of the invention is therefore to improve the pressure regulation of spinning or winding machines.

This object is achieved by a spinning or winding machine and a method having the features of the independent claims.

The spinning machine or winding machine of the invention comprises at least one pneumatic device, wherein the pneumatic device comprises a supply conduit for a first pressure, a regulating conduit for a working pressure, a valve system, a pressure gauge and a data processing unit. Wherein the regulating pipe is connected with the pressure gauge such that the working pressure is detected by the pressure gauge.

The invention proposes: the valve system comprises a first passage of a first valve or multi-way valve connected to the supply line for conveying pressure medium into the regulating line, and a second passage of a second valve or multi-way valve connected to the surrounding atmosphere for discharging the pressure medium from the regulating line. Wherein the data processing unit connected to the pressure gauge and the valve system is configured to open the first valve or the first passage and close the second valve or the second passage when the operating pressure is less than a first preset value. Furthermore, the data processing unit is configured to open the second valve or the second passage and close the first valve or the first passage when the working pressure is greater than the first preset value or a second preset value, wherein the first pressure is greater than the working pressure.

The pneumatic device can be implemented extremely compact. Pressure regulation can thereby be provided at different points of the spinning machine or winding machine. For example, the working pressure can be set independently on each machine side, each process or each working point. Furthermore, the pneumatic device has a low number of components, which increases the interference resistance and the maintenance friendliness. This makes it possible to dispense with the otherwise expensive direct or pilot pressure control valves that are required for pressure regulation.

The pressure medium is preferably air, which has to be purified from the surrounding environment. For example, a compressor is suitable for generating the first pressure. Alternatively, a precompressed pressure medium from a pressure vessel (e.g. a gas cylinder) can also be used next to the spinning machine or winding machine.

The working pressure regulated by the pneumatic means can be used, for example, to operate a pneumatic cylinder. The pressure can also be regulated in the fan. In the simplest case, the data processing unit may be, for example, an integrated circuit. However, more complex data processing units, for example in the form of computers, may also be used.

The valve or the multi-way valve may in particular be an electrically operated valve, wherein the data processing unit is adapted to generate electrical control signals for operating the valves.

The pressure gauge is configured to transmit the detected pressure to the data processing unit in the form of a proportional voltage signal.

Particularly advantageous are: the data processing unit is also configured to close the first valve or the first passage and close the second valve or the second passage when the working pressure is equal to the first preset value or the working pressure is between the first preset value and the second preset value. In general, it is preferred to determine a certain pressure range for the working pressure. Otherwise, a steady state can never be established, and the pressure can be increased or decreased at any time by the adjustment operation, resulting in high component load and high energy consumption. Pneumatically driven components also typically have a certain pressure tolerance. When two preset values are determined, a certain tolerance range can be set for the expected working pressure, and the two preset values can be obtained from the expected working pressure through addition and subtraction.

As previously mentioned, it is advantageous to: the supply line is connected to a compressed air source. The compressed air source may be, for example, a compressor or a gas cylinder that generates a constant pressure in the supply conduit. Air is particularly suitable for use as a pressure medium because of its low cost, harmlessness and almost unlimited availability. A central compressed air source can be provided for the supply ducts of several pneumatic devices of a spinning machine or a winding machine. Several compressed air sources can also be provided, for example one for each section of the spinning machine or winding machine.

For said spinning or winding machine, it is particularly advantageous: the data processing unit is in controlling connection with a central machine controller (

Verbindung). The pressure regulation can thereby be controlled centrally, in particular in dependence on other control and/or measurement parameters of the spinning or winding machine. For example, it may be semi-automatic or fully automaticThe pressure is regulated in a fully automated manner within the operating range of the machine.

Modern spinning or winding machines are provided with a machine-wide data connection in which a data processing unit can be integrated without problems.

Of course, the data processing unit can likewise be integrated in the segment controller or the operating point controller.

Furthermore, it is advantageous: the valve system and the pressure gauge are arranged on a common circuit board. This can reduce the space requirements of the pneumatic device and also eliminate the need for large-scale component wiring. For example, a common power supply for the components may be provided. Of course, the data processing unit can likewise be arranged on the circuit board.

The valve system, the pressure gauge and the data processing unit may be formed as SMD devices ("surface mounted devices") and thus may be conveniently arranged on the circuit board.

The first and second passages advantageously extend within one multiplex valve or within different multiplex valves. If both passages extend in one valve, the complexity of this one valve is increased, but the second valve can be dispensed with. If the passages extend in different valves, maintenance costs for the smallest replaceable unit are possible to be lower.

In the case of two passages in one valve, the minimum requirement is to use a three-position, three-way, multi-way valve. If the two paths are in different valves, at least two-position, two-way multiplex valves are required. Of course, multi-way valves with more connections and/or more passages may be used. Specifically, when only one valve is used, one five-position three-way multi-way valve may be considered, and when a plurality of valves are used, two three-position two-way multi-way valves may be considered.

In a further advantageous embodiment, the spinning or winding machine has a plurality of operating points arranged side by side and combined into sections, and a plurality of pneumatic devices, wherein in each section at least one of the plurality of pneumatic devices is provided. Mass production of the yarn or simultaneous winding of a large number of threads can only be achieved by means of a large number of operating points which are independent of one another. These work points are typically grouped to form several functional units or sections with a common infrastructure. However, there are differences in working conditions and requirements from station to station, sometimes also from working point to working point, and therefore decentralized pressure regulation is advantageous.

Several of the pneumatic devices may be connected in series in sequence, wherein the regulating duct of a first pneumatic device is simultaneously the supply duct of a second pneumatic device.

In the case of a further subdivision of the station into two station sides, respectively, it is advantageous: each station side corresponds to one of the plurality of pneumatic devices.

As mentioned above, it is advantageous to design the pressure regulation discretely. The smallest unit of centralized pressure regulation determines the degree of individualization possible. Thus, several pneumatic devices can of course also be assigned to each station side.

Particularly advantageous are: the working points of the spinning machine or winding machine have pneumatic reel loading devices each comprising a pneumatic cylinder. The reels used for winding or rewinding yarns on spinning or winding machines are usually driven by friction fit by driving rollers. The pressing force for pressing the winding shaft against the drive roller or the drive roller against the winding shaft is an important factor both with respect to the winding process itself and with respect to the quality of the produced yarn package. The desired contact pressure is also dependent, for example, on the properties of the yarn to be wound, the winding parameters and the empty sleeve used. The pneumatic cylinder serves to exert a desired pressing force on the reel and also to dampen vibrations that may occur. During winding, the circumference and weight of the spool vary according to the amount of yarn being wound up, and therefore, the spool pressing force varies during winding. The pneumatic cylinder can at least partially compensate for these changes depending on the geometric conditions at the working point or can also change the pressing force during the winding process.

In this case, in order to make the operating conditions of the pneumatic cylinder as constant as possible, it is advantageous: the pneumatic cylinders are each connected to one of the pneumatic devices. Wherein several of said pneumatic cylinders are preferably connected to one common pneumatic device. For example, all pneumatic cylinders of a section or of a section side are connected to a common pneumatic device, so that, as already mentioned, one pneumatic device is provided per section side. Of course, it is also possible to combine several pneumatic cylinders into one group, which in turn corresponds to one common pneumatic device. Wherein, the number of the pneumatic cylinders in one group can be smaller or larger than the number of the pneumatic cylinders at one section or one section side. In any case, the same conditions are thereby maintained on all pneumatic cylinders in a group, so that different applications, for example in groups, can be realized also at the operating point.

The pneumatic means contribute to achieving an advantageous pressure regulation, so that the force of the pneumatic cylinder can be kept constant or also controllably adapted to the variable characteristics of the reel (see above).

In the method of operating a spinning machine or a winding machine of the invention, the working pressure in the regulating duct of the pneumatic device of the spinning machine or winding machine is regulated. Wherein said working pressure is detected by a pressure gauge and compared by a data processing unit with at least one preset value.

The invention proposes: if the operating pressure is less than a first predetermined value, a first passage of a first valve or a multi-way valve connected to a supply line for a first pressure for conveying pressure medium into the regulating line is opened and a second passage of a second valve or a multi-way valve connected to the surrounding atmosphere for discharging the pressure medium from the regulating line is closed. Further, if the working pressure is greater than the first preset value or a second preset value, the second valve or the second passage is opened and the first valve or the first passage is closed, wherein the first pressure is greater than the working pressure.

The method according to the invention can be carried out by relatively simple means on spinning or winding machines, so that an effective decentralized pressure regulation is achieved for the operation of the pneumatic components of the spinning or winding machine.

The one or more valves may be operated by the data processing unit, for example, electrically. By means of the method, the operating pressure can be corrected both downwards and upwards in order to achieve a preset value, i.e. the desired operating pressure.

For the process, it is particularly advantageous: closing the first valve or the first passage and closing the second valve or the second passage if the working pressure is equal to the first preset value or is between the first preset value and the second preset value. In this way, for example, when the regulating pipe is not needed, a steady state is formed between the first preset value and the second preset value. In this state no opening or closing of the valve takes place, which reduces energy consumption and wear.

Two preset values can be calculated by determining a target pressure or a desired working pressure and determining a tolerance range.

Furthermore, it is advantageous: the pneumatic cylinder is operated by means of the working pressure of the regulating duct.

The advantageous pressure regulation within the scope of the inventive method contributes to a precise control of the force of the pneumatic cylinder. Of course, adjusting the operating pressure of the conduit may also be used to operate other components, such as a fan.

In a further advantageous development of the method, the reel is mechanically loaded by means of the pneumatic cylinder. As previously mentioned, the pneumatic cylinder can provide a pressing force that is favorable for the winding process and the quality of the coil and also suppresses vibrations that may occur. Furthermore, the pneumatic cylinder can also compensate for the variation in the pressing force during winding due to the change in the diameter of the reel and the weight of the reel, according to its geometrical layout with respect to the reel. It is also possible to generate a pressing force which varies as the winding process proceeds in a known manner with a constant working pressure according to the layout of the pneumatic cylinder.

As already mentioned, the same conditions are also set in terms of the pressing force of the winding shaft, for example at the working points of the same use (i.e. for example producing the same yarn), which is particularly important for spinning or winding machines. The realization mode is as follows: several pneumatic cylinders are connected to a common pneumatic device.

Drawings

Further advantages of the present invention are described in the following examples. Wherein:

figure 1 is a side view of the winding area of a spinning or winding machine,

FIG. 2 is a schematic view of a pneumatic device of the present invention having two valves, an

Fig. 3 is a schematic view of a pneumatic device of the present invention having a valve.

Detailed Description

In the following description of the figures, the same reference numerals are used for the same and/or at least similar features illustrated in different figures. The features and their technical solutions and/or operating principles are usually only explained in detail when first mentioned. If these features are not described in detail again, the technical solutions and/or the operating principles thereof are equivalent to those of the features with the same functions or names and described above.

Fig. 1 is a view of the winding area of an operating point 1 of a spinning or winding machine. The wire 2 is wound onto the reel 3 in this area. The thread 2 can come from, for example, a spinning box of a spinning machine, which is made of fibers. On spinning machines, the thread 2 can also come from a pay-off reel (Ablaufspule). The reel 3 is driven by a drive roller 4, wherein the weight of the reel 3 acts on the drive roller 4, so that a friction fit is formed. The weight and the circumference of the reel 3 become larger as the length of the wire 2 to be wound up increases. In order to ensure that a contact pressure is always present which is favorable for the winding process and the quality of the coil and that the winding shaft 3 is always driven uniformly, a winding shaft loading device 5 is provided. The reel loading device 5 can also suppress vibration.

The reel loading means 5 comprise a pneumatic cylinder 6, the piston force of which depends on the working pressure P of a pressure medium, for example air₂. To working pressure P₂Takes place in the pneumatic device 7, wherein the pneumatic device 7 is supplied with a first pressure P via a supply line 8₁The pressure medium of (1). The pneumatic device 7 is designed to regulate the working pressure P in the line 9₂And (6) carrying out adjustment. This will be explained in detail below by describing fig. 2 and 3. The adjusting duct 9 is connected with the pneumatic cylinder 6.

The regulating duct 9 being associated with a spinning or winding machineOther pneumatic elements not shown in the figures are connected. The pneumatic device 7 can be operated, for example, to a working pressure P for operating pneumatic components of a certain section of a spinning machine or a winding machine₂And (6) carrying out adjustment. In particular, the pneumatic means 7 can be responsive to the working pressure P for operating the pneumatic cylinder 6 of the reel loading means 5₂And (6) carrying out adjustment.

Fig. 2 schematically shows a possible structure of the pneumatic device 7: the valve system 10 comprises a first valve 11 for a first pressure P₁Is connected to the supply conduit 8. Valve system 10 also includes a second valve 12 connected to the ambient atmosphere. The two valves 11, 12 are further connected to a control line 9, in which the operating pressure P to be controlled is present₂. In this example, the valves 11, 12 are formed as two-position, two-way multiplex valves of the same specification, which may each be opened or closed.

The regulating duct 9 is connected to a pressure gauge 13 which detects the working pressure P₂And forwards it as a signal to the connected data processing unit 14. The data processing unit 14 is in control connection with the two valves 11, 12 and can open or close the valves 11, 12, respectively, by means of control signals.

The data processing unit 14 transmits the working pressure P from the pressure gauge 13₂Comparing with the first preset value if the working pressure P₂Below a first preset value, the first valve 11 is opened and the second valve 12 is closed. Furthermore, if the working pressure P is₂Above the first preset value, the data processing unit 14 closes the first valve 11 and opens the second valve 12. Depending on the conditions of the apparatus, the working pressure P₂At the ambient atmospheric pressure and a first pressure P₁Within the range of (a).

Alternatively, the data processing unit 14 may send the operating pressure P from the pressure gauge 13₂And comparing with the first preset value and the second preset value. Wherein if the working pressure P₂Below the first preset value, the data processing unit 14 opens the first valve 11 and closes the second valve 12. Furthermore, if the working pressure P is₂Above the second preset value, the data processing unit 14 closes the first valve 11 and opens the second valve 12.

Furthermore, if the working pressure P is₂Between the first and second preset values, thus forming a steady state, the data processing unit 14 can close both valves 11, 12.

The two valves 11, 12 are located on a common circuit board 15 together with a pressure gauge 13.

Fig. 3 shows another possible configuration of the pneumatic device 7: the valve system 10 here comprises a multiplex valve 16 formed as a three-position, three-way multiplex valve. Other features are consistent with those of fig. 2. The multi-way valve 16 has three possible switching positions, or more precisely a first passage 17 connecting the supply line 8 with the regulating line 9, a second passage 18 connecting the regulating line 9 with the surrounding atmosphere, and a neutral position disconnecting all connections.

In this embodiment, the pressure gauge 13 also supplies the data processing unit 14 with a pressure corresponding to the working pressure P in the regulating duct 9₂Of the signal of (1). When the working pressure P is₂Below a first predetermined value, the data processing unit 14, via at least one electrical switching signal, brings the multiway valve 16 into a position opening the first passage 17 and closing the second passage 18. If the working pressure P is₂Above the first or second preset value, the data processing unit 14 brings the multiplex valve 16 into a position closing the first passage 17 and opening the second passage 18.

If the data processing unit 14 is provided with a pressure range between the first preset value and the second preset value, it is advantageous to: when the working pressure P is₂Between the first and second preset values, the data processing unit 14 brings the multi-way valve 16 into the neutral position or leaves the multi-way valve 16 in the neutral position.

The invention is not limited to the above-described embodiments shown in the drawings. Modifications are also possible within the scope of the claims, for example by combining features appearing in different embodiments.

Description of the reference numerals

1 operating point

2 line

3 reel

4 drive roller

5 reel loading device

6 pneumatic cylinder

7 pneumatic device

8 supply pipe

9 adjusting pipeline

10 valve system

11 first valve

12 second valve

13 pressure gauge

14 data processing unit

15 public circuit board

16 multi-way valve

17 first path

18 second path

P₁First pressure

P₂Operating pressure