• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A drafting system for a spinning machine, in particular track, carding machine, comber or Lapwinder, for stretching one or more slivers comprises at least two successively arranged pairs of rollers, the top rollers are pressed by loading means against the lower rollers, wherein the loading means at least one cylinder (9) include within a cylinder housing axially movable arranged loadable and unloadable piston (18), from which a piston rod to the respective upper roller out. The loading means comprise for determining the position of the piston (18) with the piston rod (19) a sensor arrangement with a proximity switch (24) or a contact switch and a switching element (25), wherein on the piston rod (19) facing away from the piston (18 ) the switching element (25) with the piston (18) is in communication. In order to enable a self-adjusting winding detection, between a piston (18) facing the end of the switching element (25) and the piston (18) a magnetorheological substance (26) is arranged, which cooperates with an electromagnetic coil (27) of the loading means. The loading means further comprise a spring (16), e.g. a compression spring, which on the one hand and on a collar of the piston (18 '') on the other hand is supported on a projection (9 ') of the cylinder housing of the cylinder (9).
    公开号:CH706406B1
    申请号:CH00788/13
    申请日:2013-04-17
    公开日:2017-02-28
    发明作者:Lüstraeten Britta
    申请人:Trützschler GmbH & Co KG；
    IPC主号:
    专利说明:

    The invention relates to a drafting system for a spinning machine, in particular track, carding machine, comber or Lapwinder according to the preamble of claim 1.
    In a known device (EP 1 428 914 A) is slidably mounted on the piston rod and coaxial with the piston frictionally a switching disc which cooperates with a switch for detecting the position of the piston. The indexing disc is at least partially permanent magnetic to cooperate with an inductive sensor as a switch for detecting the position of the piston. If now forms a winding of fiber material to the upper roller, the floating upper roller is pressed in the direction of pressure medium cylinder. As a result, the pressure rod of the pressure medium cylinder contacting the upper roller moves in the direction of the retracted end position. When retracting the push rod on this frictionally mounted switching disc switches through the switch, and the drafting is switched off. Now the drafting system has to be opened manually and the reel has to be removed. Subsequently, the drafting system is to be brought back into the operating position by closing the loading arm.
    When using a pressure cylinder (pneumatic cylinder), the loading force is generated on the upper rollers during extension of the piston. When extending the indexing disk is also moved against a stop, so brought into a defined position. If a roller winds, the piston is pushed in the opposite direction and the winding is detected by the movement of the indexing switch. Due to the defined stop, the winding detection is independent of the outside diameter of the top rollers. It does not have to be readjusted after grinding the rollers. A suspension is not applicable to this device. When using a suspension, the loading force of the top rollers would be applied by biasing the spring. This can be done in combination with a locking of the drafting system flap. In this case, however, the piston is pressed into the cylinder during the application of the loading force (pretensioning of the spring) and moved in the same direction in the case of a winding. It is therefore not possible to drive the indexing disc in a known manner against a stop to produce a defined distance of the indexing disk to the proximity switch.
    The invention is therefore an object of the invention to provide a drafting system of the type described above, which avoids the disadvantages mentioned, which in particular allows a self-adjusting winding detection and allows a desired distance of the switching element to the switch.
    The solution of this object is achieved by a drafting system with the features of independent claim 1.
    By the inventive use of a magnetorheological substance, in particular an elastomer, a distance-independent coupling is provided. In this way, a spring can be used as a loading element. A particular advantage lies in a self-adjusting winding detection.
    The dependent claims have advantageous developments of the invention drafting the subject.
    The invention will be explained in more detail with reference to exemplary embodiments illustrated in the drawings.
    It shows:<Tb> FIG. 1 <SEP> schematically side view of the inventive drafting system of a route,<Tb> FIG. 2 part of FIG. 1 in section corresponding to K-K (FIG. 1) with a spring-loaded upper roller loading device and<Tb> FIG. 3 <SEP> Section through the cylinder (load cylinder) with a distance-independent coupling.
    According to Fig. 1, a drafting system S is a route available. The drafting system S is designed as a 4-over-3 drafting system, i. it consists of three lower rollers I, II, III (I output lower roller, Il middle lower roller, III input lower roller) and four top rollers 1, 2, 3, 4. In drafting the warping of the fiber structure 5 is made of several slivers. The delay is composed of pre-delay and main delay. The roller pairs 4 / III and 3 / II form the Vorverzugsfeld, and the roller pairs 3 / II and 1, 2 / I form the main drafting field. The output lower roller I is driven by the main motor (not shown) and thus determines the delivery speed. The input and middle bottom rollers III and II are driven by a control motor (not shown). The top rollers 1 to 4 are pressed against the bottom rollers I, II, III by pressure elements 91 to 94 (loading device) in pivotable about pivot bearing 10 (see Fig. 2) pressure arms (not shown) and obtained by frictional engagement so their drive. The direction of rotation of the rollers I, II, III; 1, 2, 3, 4 is indicated by curved arrows. The fiber structure 5, which consists of a plurality of slivers, runs in the direction A. The lower rollers I, II, III are mounted in punches 14 (see Fig. 2), which are arranged on the machine frame 15.
    According to Fig. 2, the spring-loaded pressure cylinder 9 is assigned to a retaining element 13 down. The pressure cylinder 9 forms a cylinder unit with a cylinder cavity consisting of two parts 17a and 17b (see Fig. 3), in which a piston 18 is guided by means of a push rod 19 in a slide bushing 20. The roll neck 4 of the top roll 4 engages through an opening in a retaining tab 21 into a bearing 22 a. The upper roller 4 receiving bearing 22 extends into a space between the push rod 19 and the roll neck IIIa of the lower roller III. The bearing 22 is attached via a projection 23 on the retaining element 13.
    In operation, after a fiber strand 5 has been passed over the lower rollers I, II, III, the pressure arms pivoted to the working position and fixed in this position by a (not shown) fastening device, so that the pressure rollers I, II, III can press. This pressure arises on the one hand in that the push rods 19 each rest on the corresponding bearing 22 and on the other hand by the pressure spring 16 (see Fig. 3) exerts pressure. Thereby, the push rod 19 presses with its end on the bearing 22 to produce the mentioned pressure between the upper roller 4 and the lower roller (drive roller) III. The push rod 19 (piston rod) is displaceable in the direction of the arrows D, E. With a rotary bearing 10 is designated, about the fulcrum of the holding member 13 in the direction of arrows B, C is rotatable.
    The pressure cylinder 9 of FIG. 3 is arranged in the (not shown) drafting device flap and is pulled in locking the flap in the direction of the upper roller bearing 22 down. In this case, the desired loading force is applied to the rollers 1, 2, 3, 4 by means of a spring 16. Depending on the diameter of the top rollers 1, 2, 3, 4 in this case the piston 18 is pressed into the cylinder to different degrees. Above the cylinder, a proximity switch 24 is arranged. It detects the position of a shift screw 25. This is brought by a spring 28 in a defined position. Between the shift screw 25 and the piston 18 is a magnetorheological elastomer 26, called MRE short, arranged as a clutch. This is an elastomer that contains magnetic particles (usually iron) and has the property of changing the viscoelastic properties under the influence of a magnetic field. Thus, in the normal state, it has more of a "jig-like" consistency and becomes hard when exposed to the magnetic field of a coil 27. This means that the MRE 24 is not exposed to a magnetic field when biasing the spring and the piston 18 presses against the still soft elastomer 26. The contour of the MRE adapts to the movement of the piston, regardless of its depth of immersion. When the drafting equipment is put into operation, a magnetic field is generated by the coil 27, and the MRE 24 changes its consistency and becomes harder. Here, the magnetic field must only be so large that the spring force of the harder elastomer is greater than the spring force of the upper spring 28. If the rollers start to wind, the piston 18 presses against the MRE 26 and this presses the shift screw 25 upwards. The proximity switch 24 detects the winding and triggers e.g. a display, pressure relief or the like. out.
    The cylinder cavity 17 (interior) of the cylinder 9 has on its inner wall surface (side wall) on an annular projection 9, which divides the cylinder cavity 17 in two parts 17a and 17b. In the part 17a are the magnetorheological elastomer 26, the spring 28 (eg compression spring), a part of the shift screw 25 and a collar 18 on the piston 18. In the part 17b are the compression spring 16 and a part of the piston 18 including one Federal 18 on the piston 18. The compression spring 16 is supported with one end on the neck 9 and with its other end on the collar 18 from. The piston 18 passes through the circular opening in the neck. 9 The compression spring 28 is supported at one end on a collar 25 of the shift screw 25 and with its other end on the inner surface of the top wall 17 (cylinder cover) of the cylinder 9 from. The shift screw 25 passes through a circular opening in the top wall 17th
    The invention has been illustrated using the example of a magnetorheological elastomer. Also included in the invention is a magnetorheological fluid. This is a suspension of oils and magnetic particles, which has properties similar to those of the elastomer, ie changes its viscosity under the influence of a magnetic field.
    The inventive coupling can not only be used for a self-adjusting winding detection, but also find space in other applications.
    权利要求:
    Claims (16)
    [1]
    1. drafting system for a spinning machine, in particular track, carding machine, comber or Lapwinder, for drawing one or more slivers, with at least two successively arranged pairs of rollers (1, 2 / I; 3 / II; 4 / III), the top rollers (1 , 2, 3, 4) and lower rollers (I, II, III), wherein the upper rollers (1, 2, 3, 4) can be pressed against the lower rollers (I, II, III) by loading means, the loading means being at least one Cylinder (9) with within a cylinder housing axially movable arranged loadable and unloadable piston (18), from which a piston rod (19) to the respective upper roller (1, 2, 3, 4) goes out, and wherein the loading means for determining the Position of the piston (18) with the piston rod (19) comprise a sensor arrangement with a proximity switch (24) or a contact switch and a switching element (25), wherein on the piston rod (19) facing away from the piston (18), the switching element (25 ) the Sensoranordnu ng with the piston (18) is in communication, characterized in that between a piston (18) facing the end of the switching element (25) and the piston (18) a magnetorheological substance (26) is arranged, which with an electromagnetic coil ( 27) cooperates the loading means and the loading means further comprises a spring (16), eg a compression spring, which is supported on a projection (9) of the cylinder housing of the cylinder (9) on the one hand and on a collar (18) of the piston (18) on the other.
    [2]
    2. drafting system according to claim 1, characterized in that the magnetorheological substance (26) is a magnetorheological elastomer.
    [3]
    3. drafting system according to claim 1, characterized in that the magnetorheological substance (26) is a magnetorheological fluid.
    [4]
    4. drafting arrangement according to one of claims 1 to 2, characterized in that a spring element (28) the switching element (25) force-loaded on the projection (9) of the cylinder housing of the cylinder (9) is supported.
    [5]
    5. drafting arrangement according to one of claims 1 to 4, characterized in that the proximity switch (24) of the sensor arrangement is designed as an inductive proximity switch.
    [6]
    6. drafting system according to one of claims 1 to 5, characterized in that the switching element (25) of the sensor arrangement is designed as a bolt.
    [7]
    7. Drafting system according to one of claims 1 to 6, characterized in that the switching element (25) of the sensor arrangement penetrates a cylinder housing end limiting cylinder cover.
    [8]
    8. drafting arrangement according to one of claims 1 to 7, characterized in that the proximity switch (24) of the sensor arrangement outside of the cylinder (9) is arranged.
    [9]
    9. drafting system according to one of claims 1 to 7, characterized in that the sensor arrangement is arranged within the cylinder housing.
    [10]
    10. Drafting system according to one of claims 1 to 9, characterized in that the sensor arrangement is in communication with an electrical evaluation device.
    [11]
    11. Drawframe according to one of claims 1 to 10, characterized in that the proximity switch (24) is formed so that it scans the distances from the end face of the switching element (25).
    [12]
    12. Drafting system according to one of claims 1 to 11, characterized in that the proximity switch (24) stationary and the switching element (25) relative to the proximity switch (24) is arranged to be movable.
    [13]
    13. Drafting system according to one of claims 1 to 4 or according to one of claims 6 to 12, characterized in that the proximity switch (24) is designed as a light sensor.
    [14]
    14. Drafting system according to claim 13, characterized in that the light sensor is a laser probe.
    [15]
    15. Drawframe according to one of claims 1 to 14, characterized in that the sensor arrangement is in communication with a shut-off device for the drafting system.
    [16]
    16. Drafting system according to one of claims 1 to 15, characterized in that the sensor arrangement with a relief device for the top rollers (1, 2, 3, 4) is in communication.
    类似技术:
    公开号 | 公开日 | 专利标题
    CH706406B1|2017-02-28|Drawing device for a spinning processing machine, in particular a line, carding machine, combing machine or lapwinder.
    DE102006048742B4|2021-06-10|Device on a drafting system of a spinning machine for loading the drafting system rollers, with at least one pressure cylinder
    EP0407732A1|1991-01-16|Open-end spinning device
    DE102008050874A1|2010-04-01|Air jet spinning unit with spindle-shaped component
    DE102007023143B4|2021-05-12|Spring-loaded thread brake
    DE102013111998A1|2015-04-30|Valve
    DE102008026420A1|2008-12-11|declutching
    EP3290370B1|2019-01-30|Wire feeding device
    EP3073000B1|2019-05-15|Compressor unit
    AT395053B|1992-09-10|SANITARY FITTING
    DE10354588B4|2014-02-20|Paraffining device for a cheese-producing textile machine
    DE60008322T2|2005-05-19|Vacuum conveyor
    CH700550A2|2010-09-15|Revolving flat.
    DE3920161C2|1998-02-05|Expansion wedge device, in particular for motor vehicle brakes
    DE2543018A1|1977-03-31|THREAD BRAKE, IN PARTICULAR FOR DOUBLE-WIRE TWISTED SPINDLES
    DE4034841B4|2005-11-17|Device for sealing on a rotating, fiber-guiding roller of a spinning preparation machine, e.g. Carding machine, carding machine, card tracer, cleaner
    DE2117967A1|1971-10-28|Device for detecting the tension of a thread running off a rotating yarn or warp beam
    DE2112651B2|1980-08-28|Clamping and releasing device for tools on drilling, milling and similar machine tools
    EP0942190B1|2006-05-31|Actuating device, in particular for a clutch
    DE2939628A1|1981-04-16|Braking device for cheese winder - has brake drum incorporated in tube end plate and pneumatically operated brake shoe
    EP0472929A2|1992-03-04|Use of a sealing arrangement
    DE102013204185A1|2014-09-18|Arrangement for the hydraulic actuation of a clutch
    DE102016200149A1|2017-07-13|Device for clamping workpieces
    DE102015201758A1|2015-08-06|Device for rolling up a pipe or a hose
    DE102019115219A1|2020-12-10|Suction tube for a compression device and device for the pneumatic compression of a drawn fiber structure
    同族专利:
    公开号 | 公开日
    CH706406A2|2013-10-31|
    CN103374773A|2013-10-30|
    BR102013009563B1|2021-04-13|
    DE102012007777A1|2013-10-24|
    ITMI20130198A1|2013-10-21|
    GB201305694D0|2013-05-15|
    GB2501387A|2013-10-23|
    CN103374773B|2017-05-24|
    BR102013009563A2|2015-06-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN2419219Y|2000-02-03|2001-02-14|山西经纬合力机械制造公司总厂|Roller pressing device|
    DE10030079A1|2000-06-19|2002-01-24|Schenck Ag Carl|Cylinder piston arrangement based on electro- and magneto-rheological liquids, has second volume-changing chamber that produces bias force against admission direction of pressure medium in first working chamber|
    US7428922B2|2002-03-01|2008-09-30|Halliburton Energy Services|Valve and position control using magnetorheological fluids|
    DE10255640B3|2002-11-28|2004-01-22|Rexroth Mecman Gmbh|Pressure cylinder, in particular for a drafting system of a textile machine|
    DE10331759B4|2003-07-14|2012-03-29|Trützschler GmbH & Co Kommanditgesellschaft|Device on a stretch for textile fiber ribbons with loading and unloading of drafting crown rollers|
    CN2723469Y|2004-06-15|2005-09-07|上海纺织机械总厂|Laminated double cylinder with self stop device|
    DE102005020506A1|2005-04-29|2006-11-09|TRüTZSCHLER GMBH & CO. KG|Device on a drafting system of a spinning machine, in particular track, card, combing machine o. The like., To load the drafting rollers, with at least one pressure cylinder|
    DE102006048742B4|2006-10-11|2021-06-10|Trützschler GmbH & Co Kommanditgesellschaft|Device on a drafting system of a spinning machine for loading the drafting system rollers, with at least one pressure cylinder|
    EP2491274B1|2009-10-19|2014-11-12|Hydac Technology Gmbh|Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing|CN104294408A|2014-11-03|2015-01-21|镇江奥立特机械制造有限公司|Stretching pressure roller self-adjustment device for carbon nanofiber stretching equipment|
    CN104500490B|2014-12-20|2016-11-30|桐梓县创兴自动化设备有限公司|Textile machine buffer unit|
    CN105889346B|2016-07-07|2018-08-24|贵州华阳电工有限公司|Spring type mechanical clutch|
    CN111649093A|2020-06-04|2020-09-11|江苏三尔汽车部件有限公司|Shock absorber for recovering vibration energy of automobile|
    法律状态:
    2014-07-15| PCAR| Change of the address of the representative|Free format text: NEW ADDRESS: HOLBEINSTRASSE 36-38, 4051 BASEL (CH) |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012007777A|DE102012007777A1|2012-04-20|2012-04-20|Device on a drafting system of a spinning preparation machine, in particular track, carding, comber, Lapwinder o.|
    [返回顶部]