• 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:
    The invention relates to a traversing device for a drafting of a textile machine for traversing at least one fiber strand (2a-2f), with a running along the drafting and movable rail (3), with at least one by means of the rail (3) movable guide element (4) for traversing of the fiber structure (2a-2f) by the drafting device, wherein the rail by means of a drive (5) is movable in its longitudinal direction, so that the rail (3) in a traversing movement (Cb) is displaceable. According to the invention, the traversing device (1) comprises at least one support drive (6) which supports the traversing movement (Cb) of the rail (3) with a tensile force (Zk). Furthermore, the invention relates to a method for operating the traversing device (1). According to the invention, the rail (3) of the traversing device is subjected to a tensile force (Zk) by the at least one support drive (6) and / or the drive (5).
    公开号:CH712620A2
    申请号:CH00774/17
    申请日:2017-06-15
    公开日:2017-12-29
    发明作者:Stahlecker Gerd；Huber Karheinz
    申请人:Rieter Ag Maschf；
    IPC主号:
    专利说明:

    Description: The present invention relates to a traversing device for a drafting system of a textile machine for traversing at least one fiber structure. The traversing device has a running along the drafting and movable rail. By means of the rail, at least one guide element for guiding and oscillating the fiber structure can be moved by the drafting system. The rail is movable by means of a drive in its longitudinal direction, so that the rail is displaceable in a traversing movement. In addition, the invention relates to a method for operating such a traversing device.
    From DE 10 2008 064 531 A1 a traversing device for a drafting of a textile machine is known. The traversing device includes an element for coupling the traversing device to a parallel to the drafting rollers extending and displaceable rail and a connecting arm for coupling the compressor unit. A disadvantage of such a traversing device is that the rail is only poorly displaceable along the drafting system. The rail extends along the entire drafting system, so that the rail can reach a length of up to several tens of meters. The rail is stored at intervals in camps. This already makes it difficult to move the rail along the drafting system. Due to the friction of the rail in the bearings, it is difficult or even impossible for the rail to be pushed through the bearings.
    In addition, the connecting arm of the compressor unit exerts on the rail a bending moment caused by a frictional force (generated by a corresponding frictional resistance) of the compressor unit with the drafting rollers and the length of the connecting arm (the rail and the connecting arm usually have a right angle to each other on). Since a plurality of compressor units are usually arranged on the rail, a number of bending moments accordingly act on the rail. Both effects, the friction of the rail in the bearings and the individual bending moments, mean that the rail can no longer be displaced. Both effects also lead to a buckling of the rail. The frictional resistance of the rail in the bearings leads to resistance and consequent buckling at the bearings. The bending moments also lead to a buckling at the respective points at which the connecting arms are arranged on the rail. This leads to a so-called drawer effect, wherein the rail canted in the camps. If the canted rail in the camps dissolves, it comes to jerky individual movements of the rail and thus the compressor unit, which are extremely undesirable. Controlled shifting of the rail is therefore impossible.
    Object of the present invention is therefore to provide a traversing device which eliminates the above-mentioned disadvantages.
    The object is achieved by a traversing device and a method for its operation with the features of the independent claims.
    Proposed is a traversing device for a drafting of a textile machine for traversing at least one fiber structure. Along the drafting system runs a movable rail on which at least one movable by means of the rail guide element for traversing the fiber structure is arranged by the drafting system. The rail is further movable by means of a drive in its longitudinal direction, so that the rail is displaceable in a traversing movement.
    By the guide element of the fiber structure is guided by associated drafting rollers. The guide element may for example have a guide groove in which the fiber structure is inserted. The guide element may also comprise a compressor unit that compresses the fiber structure. The traversing of the fiber structure has the advantage that it is not continuously passed at the same point between the drafting rollers. As a result, a cutting of the fiber structure is prevented in the drafting rollers. By traversing the fiber structure the drafting rollers are rather uniformly claimed over a wide range, so that the cutting is prevented at one point and the life of the drafting rollers is extended.
    The traversing motion, which is transmitted through the rail on the guide element, is a back-and-forth motion, so that the fiber structure is moved back and forth in a range of drafting rollers. The traversing movement can also be characterized as a traverse stroke, for example. The drive generates the traversing movement, the reciprocating motion or the traverse stroke of the rail.
    According to the invention, the traversing device comprises at least one support drive, which supports the traversing movement of the rail by means of a tensile force. The support drive, for example, act on the rail in such a way that it acts on the rail with a tensile force. Traction pulls the rail along the drafting system and through the bearings. A buckling of the rail on the bearings is thereby prevented, so that the above-described drawer effect is prevented. The rail can thus be moved defined along the drafting system. The support drive can also be retrofitted to existing existing spinning machines to the traversing device advantageously.
    The support drive may act on the rail additionally or alternatively with a compressive force to move the rail along the drafting system.
    If the support drive pulls more or less than the sum of the forces acting on the rail friction forces retain this, the drive is loaded by the difference. If the backup drive pulls too much, the drive will slow down if the backup drive pulls too little, the drive will contribute to the movement and additionally push. When the support drive pulls just enough to move the rail, the drive is completely unloaded and only dictates the direction of movement.
    If only one support drive is used, this is preferably mounted on the opposite end of the machine to the drive. Then, as the rail moves toward the backup drive, the backup drive pulls, the rail moves toward the drive, the drive pulls, and the backup drive can be off. Since the movement of the rail requires a high tensile force and the drive is usually not designed for this stress or undersized for it, two support drives are used in case of doubt. The two support drives are then arranged at the two rail ends of the rail to take the rail alternately to itself, the support drive, which is currently not pulling, can be switched off.
    In this case, the support drive pulls the rail to the left when the drive also moves the rail to the left and the rail is pulled to the right when the drive moves the rail to the right.
    An advantageous development of the invention is when the drive is arranged in a region of a rail end. As a result, the drive can be easily constructed, since the drive must have only one connection point for the rail. Additionally or alternatively, at least one support drive may also be arranged in a region of a rail end. As a result, as with the drive, the support drive can be easily constructed. In addition, the drive and / or the support drive can be particularly easily removed or replaced for maintenance purposes. The drive and / or the support drive does not have to be arranged at an outermost rail end. The drive and / or the support drive may also have a distance to the outermost rail end.
    For reasons of space, it has been found that, where appropriate, the support drives can not be located exactly at the beginning of the machine and at the end of the machine. In these cases, the support drives are located near the beginning of the machine and the end of the machine, and it is accepted that a small remnant of the rail is nevertheless subjected to thrust.
    It is also advantageous if in each case a support drive is arranged in the areas of both rail ends, by means of which the rail can be acted upon by the tensile force. The two support drives can act on the rail alternately with the tensile force, so that the rail is pulled from one to the other support drive. As a result, the rail is pulled through the bearings, so that the buckling of the rail is prevented.
    It is advantageous next to it, when the loading of the rail with the tensile force of the at least one support drive is coupled to the movement of the drive, so that by means of the drive, the loading of the rail with the tensile force can be predetermined by the support drive. Thus, the drive provides a tact, with the support drive pulls the rail to it. The drive acts as a clock, which, for example, no longer causes the traversing movement by means of the tensile force and / or pressure force. In this case, two support drives can be arranged in the areas of the rail ends. Then the drive sets the pace with which the two support drives pull the rail alternately towards him.
    Further, it is advantageous if the two support drives form the traversing movement in the two areas of the rail ends, wherein the drive is controlled such that it is powerless on the rail. The drive acts neither tensile force nor a compressive force on the rail, but only provides the movement of the rail. Only the two support drives then call forth the traversing movement, wherein the two support drives in each case alternately pull the rail to approach.
    It is also advantageous if at least one support drive is arranged between the two rail ends. From a certain length of the rail, a drive and a support drive, in particular if they are arranged at the rail ends, may no longer be sufficient for the traversing movement of the rail. For example, an additional support drive may be centrally located between the rail ends to assist the traverse movement of the rail in the center.
    It is also advantageous if the support drive comprises a spring element, a pneumatic, a hydraulic cylinder and / or an electric linear drive, which acts on the rail with a tensile and / or compressive force. The spring element represents, for example, a cost-effective variant of the support drive, since no power supply connections are required. By means of the pneumatic or hydraulic cylinder, the rail can be subjected to high tensile forces or compressive forces. The electric linear drive can be precisely controlled.
    Further, it is an advantageous development of the invention, when the drive and / or the backup drive acts by means of a lever mounted on a lever on the rail. As a result, according to the law of levers, a force which causes the traversing movement can be intensified.
    Furthermore, it is advantageous if a step disc, which has at least two sections with different radii, is arranged on a drive shaft of the drive. In this case, the portions of the stepped disc can be recognized by a sensor, so that a position of the drive can be seen. The sensor can be, for example, a light barrier sensor which is interrupted or not interrupted by the two sections of the stepped disk. For this purpose, the light barrier sensor can be arranged in an edge area of the step disc, so that the section with the larger radius interrupts the light barrier sensor or so that the area with the smaller radius does not interrupt the light barrier sensor. This can be determined in a simple manner, which position the drive has. This is important to infer the state of motion and / or the position of the rail.
    Additionally or alternatively, a direction of rotation of the drive can be detected by means of the sensor and the stepped disc. As a result, it can be detected in particular in which direction the rail moves. Depending on the direction of movement of the rail, the drive and / or the at least one support drive can then be correspondingly activated.
    With the help of the stepped disc and the sensor but also after a restart of the textile machine, a position of the drive and thus a position of the rail can be determined. The drive rotates, for example, in any direction until a section change is detected. In the section change, the current position of the drive and thus also the position of the rail is known. The drive can be referenced.
    From which side the rail is pulled, is removed from the stepped disc, which rotates with the drive. With this step disc, the position of the rail can be detected at any time, even if the machine has been switched off in the meantime. In addition, it can thus be recognized in which direction the traversing movement is running and in which direction it has to be pulled and which support drive is loaded accordingly on one or the other side of the machine.
    It is also advantageous if the movements of the drive and the at least one support drive are coordinated.
    It is particularly advantageous if the at least one support drive expends at least 75% of the total acting on the rail tensile and / or compressive force. However, the at least one support drive can also spend at least 90% of the total tensile and / or compressive force acting on the rail.
    A particular embodiment of the invention is when the drive and / or the support drive comprises a damping element, so that the rail is damped in the traversing movement in its longitudinal direction. In this case, the traversing movement can be damped in areas of reversal points of the movement. As a result, an abrupt traversing movement can be prevented.
    In addition, it is advantageous if the rail is moved at a traversing speed which is between 0.5 cm / s and 5 cm / s. Relatively low traversing speeds are sufficient for traversing the fiber structure in order to prevent it from being cut into the drafting rollers. Due to the low traversing speed, the drive and / or the backup drive need not be particularly powerful. Higher traversing speeds would also require higher traversing accelerations, so that the drive and / or support drive would also have to be more efficient.
    In addition, it is advantageous if the traversing movement has an amplitude in the range between 0.3 cm and 15 cm. The amplitude can also be only 0.3 to 5 cm. The amplitude can also be between 4 and 10 mm. As a result, the area of the drafting roller to be stressed can be selected. At low amplitudes, a small range of the drafting roller is claimed and at large amplitudes a large area is claimed accordingly.
    Furthermore, a method for operating a traversing device is proposed, which is designed according to one or more features of the preceding and / or following description. The traversing device has in particular the rail, which runs along the drafting system and is movable in its axial direction along the drafting system. At least one guide element is arranged on the rail, which changes the fiber structure through the drafting system due to the movement of the rail. The rail is moved by means of a drive in its longitudinal direction, so that the rail is placed in the traversing movement.
    According to the invention, the rail is acted upon by at least one support drive with a tensile force. The rail is thereby pulled through the bearings, so that the buckling is prevented from the outset.
    An advantageous embodiment of the invention is when the support drive and / or the drive applied to the rail with the tensile force corresponding to at least 75%, in particular at least 90%, of the total force acting on the rail and the traversing movement causing force. As a result, the rail is pulled through the bearings stronger than pushed, so that the buckling of the rail is prevented at the camps.
    A further advantageous embodiment of the invention is when the support drive and / or the drive applied to the rail with the tensile force corresponding to 100% of the total force acting on the rail and the traversing movement causing force. As a result, the rail is always pulled through the bearings, so that the buckling of the rail is excluded.
    Furthermore, it is advantageous if a drive and / or a support drive to a rail end and a drive and / or a support drive to the other rail end of the rail are arranged. Upon reaching a reversal point of the traversing movement of the rail while the straight pulling drive and / or the backup drive is turned off. At the same time and / or subsequently, the drive and / or the support drive is switched on at the opposite rail end of the rail, so that he / she acts on the rail with the pulling force. This ensures that the rail is always pulled so that the buckling is prevented. The rail is always pulled alternately by the drives and / or the support drives of the respective rail end.
    Additionally or alternatively, the drives and / or the support drives of the respective two rail ends of the rail can act on these simultaneously with the tensile force. Thus, for example, the drive and / or the support drive at a rail end, the rail with 110 Newton tensile force act. The drive and / or the support drive at the other end of the rail can then apply 10 Newton to the rail, for example. Of course, the rail then moves towards the rail end where the drive and / or backup drive applies the 110 Newton. It has an effective force of 100 Newton. The counterforce serves to reduce a game of the drive and / or the backup drive. It should be noted here that the numerical values 110 Newton and 10 Newton are chosen only as examples for illustration. The ratio and / or the amount of both forces could also be greater or smaller.
    Further advantages of the invention are described in the following embodiments. Show it:
    1 shows a detail of a traversing device of a prior art with a rail, a drive and a plurality of guide elements,
    2 shows a section of a traversing device with a rail, a drive, a plurality of guide elements and a support drive,
    3 shows a section of a traversing device with a rail, a drive, a plurality of guide elements and two support drives,
    Fig. 4 shows a detail of a traversing device with a rail, a drive, a plurality of guide elements and two support actuators, which act by means of levers on the rail and
    Fig. 5 shows a detail of a traversing device with a rail, a drive, a plurality of guide elements and three support drives.
    In Fig. 1, a section of a traversing device 1 with a rail 3, a drive 5 and a plurality of guide elements 4a-4c is shown. Such a traversing device 1, for example, prior art and is part of a drafting system, not shown here. The drafting system comprises a plurality of drafting rollers, which stretch the fiber assemblies 2a-2f. The drafting system extends parallel to the rail. 3
    The drive 5 performs in this embodiment, a partial rotational movement Db, which sets the rail 3 in a traversing Cb. The drive 5 transmits by means of a hinge connection 16, the rotational movement Db on the rail 3. The drive 5 is arranged at a rail end 7a of the rail 3. The traversing movement Cb is a back-and-forth motion or can also be described as traversing stroke. The rail 3 is mounted in the bearings 9a, 9b.
    On the rail 3 are further arranged three connecting arms 8a-8c, which transmit the traversing movement Cb on the associated guide elements 4a-4c. In each case a guide elements 4a ~ 4c leads two fiber assemblies 2a-2f. The guide elements 4a-4c may also each have a compressor unit, not shown here, which compress the fiber composites 2a-2f. The guide elements 4a-4c are also arranged between drafting rollers, not shown here. Furthermore, the traversing motion Cb is transmitted to the fiber composites 2a-2f by the guide elements 4a-4c.
    The traversing of the fiber assemblies 2a-2f has the advantage that they are not performed at a single point between the drafting rollers. As a result of the oscillation, the fiber composites 2a-2f are guided back and forth over a wide area between the drafting rollers. Thus, the drafting rollers are uniformly stressed by the fiber composites 2a-2f and a cutting of the respective fiber composites 2a-2f at one point of the drafting roller is prevented.
    As already mentioned, Fig. 1 shows only a section of a traversing device 1. The traversing device 1 and the drafting system, not shown here may extend over several tens of meters. The traversing device 1 therefore has a likewise long rail 3, which is of course supported by a plurality of bearings 9. In addition, the drafting device or the traversing device 1 also has a multiplicity of guide elements 4 for guiding a plurality of fiber composites 2.
    A disadvantage of the traversing device 1 of the prior art is that the rail 3 can not be pushed by the bearing 9 from a certain length. The rail 3 has in the bearings 9 a first frictional resistance, which inhibits the traversing movement. With the plurality of bearings 9, the drive 5 can no longer apply sufficient force to push the rail 3 through the bearings 9.
    In addition, the first frictional resistance of the rail 3 in the individual bearings 9a, 9b results in that, viewed from the drive 5, the rail 3 buckles in front of the bearings 9a, 9b. The rail 3 thus bends in front of the bearings 9a, 9b. As a result, precise guiding of the fiber assemblies 2a-2f by the guide elements 4a-4c becomes impossible.
    Furthermore, the guide elements 4a-4c with the associated drafting rollers on a contact, so that between the guide elements 4a-4c and the drafting rollers, a second frictional resistance is formed. When oscillating the guide elements 4a-4c with the traversing movement Cb, therefore, this second frictional resistance must also be overcome. This second frictional resistance must therefore be spent in addition to the first frictional resistance of the rail 3 in the bearings 9a, 9b.
    But this second frictional resistance also generates a force which is oriented parallel to the rail 3, the traverse movement Cb is opposite and engages the guide elements 4a-4c. This force generated by the length of the connecting arms 8a-8c bending moments (force and connecting arms 8a-8c are perpendicular to each other), which are received by the rail 3. These bending moments increase the buckling or bending of the rail 3, so that the guide elements 4a-4c can no longer be guided with sufficient accuracy.
    The buckling or bending can be formed so far that the rail 3 in the bearings 9a, 9b tilted. It can come here to a so-called drawer effect. The tilting of the rail 3 prevents the traversing movement Cb of the rail 3, so that the traversing of the fiber assemblies 2a-2f is prevented. The fiber composites 2a-2f then intersect again in the drafting rollers, so that they must be damaged and replaced after a short time.
    In addition, the tilting leads to a jerky traversing movement Cb, when the rail 3 in the camps 9a, 9b briefly dissolves and immediately tilted again. This can cause damage to the traversing device 1 and the drafting system.
    With the invention, these disadvantages are to be solved.
    According to the invention, the traversing device 1 in the embodiment of FIG. 2 on a support drive 6. The features which have already been described in FIG. 1, in particular if they have the same effect, will not be explained again here for the sake of simplicity. This is especially true for the other following figures.
    The support drive 6 is arranged on the rail end 7 a opposite rail end 7 b of the rail 3. The support drive 6 is formed in this embodiment as a pneumatic or hydraulic cylinder. The support drive 6 is further arranged coaxially with the rail 3. It can exert a tensile force Zk and a compressive force Dk on the rail 3, so that the traversing movement Cb is formed by at least one of these two components. Advantageously, the support drive 6 can apply only a tensile force Zk, so that the rail 3 is used to the support drive 6.
    The support drive 6 supports the drive 5 such that it acts on the rail 3 with the tensile force Zk, so that the rail 3 is pulled in the direction of the support drive 6. The support drive 6 can spend between 75% and 90% of the tensile force Zk to form the traversing movement Cb of the rail 3. The drive 5 then controls only a corresponding fraction, between 10% and 25%, of the force in order to set the rail 3 in the traversing movement Cb. The support drive 6 can also spend 100% of the force to form the traversing movement Cb of the rail 3. Accordingly, the drive 5 does not contribute to the traversing movement Cb. This means above all that the support drive 6, the rail 3 with 100% of the tensile force Zk applied and the drive with 0%. In this case, 100% corresponds to the force (tensile force Zk or compressive force Dk) that is necessary to move the rail into its traversing movement Cb. For example, the traversing movement Cb can be formed by means of a force (tensile and / or compressive force) of 100 Newtons. Of course, this depends on the mass of the rail 3, the number of bearings, etc. However, in this example, the 100 Newton equals 100%. On the rail 3 acts only the tensile force Zk. For example, then acts on the rail 3 no pressure Dk.
    Additionally or alternatively, the support drive 6 could apply the rail 3 with 120% tensile force and the drive 5, the rail 3 with 20% tensile force. This again results in the 100% necessary to form the traverse movement Cb of rail 3. However, a game of the drive 5 and the support drive 6 and the rail 3 is compensated by the opposite forces.
    Due to the higher proportion of the tensile force Zk of the support drive 6, buckling of the rail 3, as seen by the drive 5, is prevented from the outset in front of the bearings 9a, 9b. In addition, the effects of bending moments, mediated by the second frictional resistance of the guide elements 4a-4c on the drafting works rolls, are reduced. Due to the higher proportion of the tensile force Zk of the support drive 6, the rail 3 is pulled straight so to speak and the bending or buckling in front of the bearings 9a, 9b is prevented.
    It is advantageous if the rail 3 is only pulled. For this purpose, the support drive 6 pulls the rail 3 towards it. At a reversal point of the traversing movement Cb, the support drive 6 is switched off and the drive 5 pulls the rail 3 towards it. When the rail 3 has arrived at the drive 5, the drive 5 is switched off again and the support drive 6 pulls the rail 3 back towards him.
    In addition, the assist drive 6 can also apply the thrust force Dk to the rail 3 to move the traverse motion Cb in the opposite direction, i.e., in the opposite direction. in the direction of the rail end 7a to assist. By alternately applying the rail 3 with the tensile force Zk and the pressing force Dk, the traversing movement Cb can be formed.
    In this case, it is possible, for example, that the tensile force Zk applied by the support drive 6 has a higher amount than the pressure force Dk. As a result, the rail 3 is pulled with a higher force (tensile force Zk) than pushed (compressive force Dk). As a result, the buckling of the rail 3 is prevented by the support drive 6. The remaining force required for the traversing movement Cb is applied by the drive 5 in this embodiment.
    The support drive 6 can also be designed, for example, as a spring element or an electric linear drive.
    In order to be able to recognize a positioning of the rail 3, the drive 5 has a stepped disk 12 which rotates in accordance with the rotational movement Db. The stepped disks 12 furthermore have at least one section with a first radius 14 and at least one section with a second radius 15, wherein the second radius 15 is greater than the first radius 14. In a peripheral region of the stepped disk 12, a sensor 13 is further arranged, which can detect a position of the stepped disk 12 by means of the two sections with the two radii 14,15. For this purpose, the sensor 13 can be designed, for example, as a light barrier, which is not interrupted by the section with the first radius 14 and is interrupted by the section with the second radius 15. If the drive 5 now executes the rotational movement Db, depending on the position of the stepped pulley 12, a section with a radius 14 or 15 in the region of the sensor 13 can be deduced from the position of the stepped pulley 12. From a change in the position of the stepped disk 12 can be closed to a traversing speed of the rail 3.
    With the help of the stepped plate 12 and the sensor 13 can be closed in a direction of rotation Db of the drive 5. From the direction of rotation Db of the drive 5 can consequently be concluded that a direction of movement of the rail 3.
    By means of the stepped disk 12 and the sensor 13, the drive can also be referenced. This may be necessary, for example, after a restart of the textile machine to determine the instantaneous position of the drive 5 and the rail 3. As a result, the drive 5 rotates, for example, in an arbitrary direction of rotation Db. In the section change on the stepped pulley 12, the position of the drive 5 is known. From this, the position of the rail 3 can be determined.
    In order to increase the accuracy of the measurement of the position of the stepped disk 12 by the sensor 13, also several sections with the two radii 14, 15 may be present. For example, when the sensor 13 is connected to an incremental encoder, the position and traversing motion Cb of the rail 3 can be more accurately detected.
    The stepped pulley 12 can also be used to control the support drive 6. For example, the sections with the radii 14, 15 may be arranged such that an identification of the two sections by the sensor 13 mark a reversal point of the traversing movement Cb. Upon reaching a section change, for example, the support drive 6 can switch from the pressure force Dk to the tensile force Zk.
    The traversing movement Cb may also have an amplitude which is, for example, in the range between 0.5 cm and 5 cm. The rail 3 may also, for example, have a traversing speed which is in the range between 0.5 cm / s and 5 cm / s.
    Fig. 3 shows a further embodiment of the invention. The traversing device 1 here has two support drives 6a, 6b. In this case, the support drive 6a is arranged on the rail end 7a, on which the drive 5 is also arranged. At the opposite rail end 7b of the support drive 6b is arranged.
    The support drive 6b pulls the rail 3 toward it in its traversing movement Cb, for example with the pulling force Zk '. The support drive 6b is here again designed as a pneumatic or hydraulic cylinder. At the same time, the support drive 6a can apply the pressing force Dk to the rail 3, so that the support drive 6a pushes the rail 3 away from itself. At the same time, the drive 5 can also have such a rotational movement Db that it also acts on the rail 3 with a compressive force Dk.
    In a reversal of the traversing movement Cb, the support drive 6a can act on the rail 3 with the tensile force Zk and so attract to itself. At the same time, the backup drive 6b can apply a compressive force Dk 'to the rail to push the rail 3 away from itself. The drive 5 may in this case have such a rotational movement Db that it acts a tensile force Zk on the rail 3. The drive 5 thus also pulls the rail 3 in the direction of the support drive 6a.
    The two support drives 6a, 6b can thus act on the rail 3 alternately with a tensile force Zk, Zk 'and compressive force Dk, Dk', so that the support drives 6a, 6b alternately pull the rail 3 to itself and are doing by the respectively supports other support drive 6a, 6b. As a result, in each directional component of the traversing movement Cb, a tensile force acts, so that buckling or bending of the rail 3 in each directional component of the traversing movement Cb is prevented.
    In this embodiment, the drive 5 and / or the support drive 6a and the support drive 6b can also simultaneously act on the rail 3 with a tensile force Zk or Zk ', for example. As a result, the rail 3 is subjected to a tensile force Zk or Zk 'at the rail end 7a and at the rail end 7b. In order to cause the traversing movement Cb, while a tensile force Zk, Zk 'is greater than the other. For example, the tensile force Zk of the drive 5 and / or the support drive 6a is greater than the tensile force Zk 'of the support drive 6b, so that the rail 3 performs a traversing movement Cb in the direction of the support drive 6a. As a result, the accuracy of the traversing movement Cb can be increased.
    Furthermore, it is advantageous if the tensile forces Zk, Zk 'of the support drives 6a, 6b are greater than the pressure forces Dk, Dk'. As a result, bending or buckling of the rail 3 is always prevented.
    Further, the support drive 6a is formed in this embodiment as a spring element. In this case, in the spring element, the tensile force Zk and the compressive force Dk is achieved in that the spring element is stretched or compressed.
    In addition, the two support drives 6a, 6b together spend between 75% and 90% of the total force on the rail 3, to put them in their traversing movement. The drive then adds up the remaining 10% to 25%. By the two support drives 6a, 6b at each rail end 7a, 7b bending or buckling of the rail 3 on both sides of the bearings 9a, 9b is prevented.
    The support drives 6a, 6b can also be designed differently. For example, the support drive 6a could also comprise a pneumatic or a hydraulic cylinder. The support drives 6a, 6b could thus comprise a spring element, a pneumatic, a hydraulic cylinder and / or an electric linear drive.
    Fig. 4 shows a further alternative embodiment of the invention. The two support drives 6a, 6b of the traversing device 1 are here coupled to the rail 3 by means of levers 10a, 10b.
    The support drive 6a is coupled to the rail 3 by means of the lever 10a. The lever 10a is mounted on the fulcrum 11a and engages the rail end 7a. The fulcrum 11a is disposed closer to the rail end 7a in this embodiment, so that a force of the support driver 6a on the rail 3 is strengthened. Alternatively, the fulcrum 11a may also be located closer to the support drive 6a so that the traverse motion Cb is amplified upon a stroke of the assist drive 6a. By the lever 10a, however, the tensile force Zk and the pressing force Dk is inverted to the rail 3. For example, when the assist drive 6a acts a pressing force Dk, the lever 10a transmits to the rail 3 a tensile force that increases according to the lever law (as shown here) or is reduced. A tensile force Zk of the assist drive 6a accordingly becomes a thrust force Dk on the rail 3.
    The support drive 6b acts on the rail 3 by means of the lever 10b mounted on the fulcrum 11b. Here, too, the fulcrum 11b is arranged closer to the rail end 7b than to the support drive 6b. Thereby, a force of the backup drive 6b is reinforced on the rail 3. Again, the lever 10b inverts the pressing force Dk 'or the tensile force Zk' on the rail. 3
    Fig. 5 shows a further embodiment of a traversing device 1. In this embodiment, an additional support drive 6c between the two rail ends 7a, 7b is arranged. The support drive 6c is designed here as a pneumatic or hydraulic cylinder, but may also be designed as a spring element or an electric linear drive. The further support drive 6c can be installed, for example, if the rail 3 has a length such that even the two support drives 6a, 6b are insufficient.
    The present invention is not limited to the illustrated and described embodiments. Variations within the scope of the claims are also possible as a combination of features, even if they are shown and described in different embodiments.
    List of Reference Signs 1 traversing device 2 fiber structure 3 rail 4 guide element 5 drive
    权利要求:
    Claims (19)
    [1]
    6 Support drive 7 Rail end 8 Connecting arm 9 Bearing 10 Lever 11 Fulcrum 12 Step disc 13 Sensor 14 First radius 15 Second radius 16 Joint connection Db Rotational movement Cb Traversing motion Zk, Zk 'Pulling force Dk, Dk' Compressive force Claims
    1. traversing device for a drafting of a textile machine for traversing at least one fiber strand (2 a-2 f), with a running along the drafting and movable rail (3), with at least one by means of the rail (3) movable guide member (4 a-4 c) Traversing of the fiber structure (2a-2f) by the drafting device, wherein the rail (3) by means of a drive (5) is movable in its longitudinal direction, so that the rail (3) in a traversing movement (Cb) is displaceable, characterized in that the traversing device (1) comprises at least one support drive (6a, 6b) which supports the traversing movement (Cb) of the rail (3) by means of a tensile force (Zk, Zk ').
    [2]
    2. traversing device according to the preceding claim, characterized in that the drive (5) in a region of a rail end (7a, 7b) and / or that at least one support drive (6a, 6b) in an area at least one, in particular of the drive ( 5) opposite, rail end (7a, 7b) is arranged.
    [3]
    3. traversing device according to one of the preceding claims, characterized in that in each case a support drive (6a, 6b) is arranged in the regions of both rail ends (7a, 7b), by means of which the rail (3), in particular alternately, with the tensile forces (Zk , Zk ') can be acted upon.
    [4]
    4. traversing device according to one of the preceding claims, characterized in that the loading of the rail (3) with the tensile force (Zk, Zk ') of the at least one support drive (6a, 6b) is coupled to the movement of the drive (5), so that by means of the drive (5) the loading of the rail with the tensile force (Zk, Zk ') by the support drive (6a, 6b) can be predetermined.
    [5]
    5. traversing device according to one of the preceding claims, characterized in that the two support drives (6a, 6b) in the two regions of the rail ends (7a, 7b) form the traversing movement (Cb), wherein the drive (5) is controlled such that he is powerless.
    [6]
    6. traversing device according to one of the preceding claims, characterized in that at least one support drive (6a, 6b) between the two rail ends (7a, 7b) is arranged.
    [7]
    7. traversing device according to one of the preceding claims, characterized in that the support drive (6a, 6b) comprises a spring element, a pneumatic, a hydraulic cylinder and / or an electric linear drive, the rail (3) with a train (Zk, Zk ') and / or pressure force (Dk, Dk') acted upon.
    [8]
    8. traversing device according to one of the preceding claims, characterized in that the drive (5) and / or the support drive (6a, 6b) the rail (3) by means of a lever point (11a, 11b) mounted lever (10a, 10b) in their traversing movement (Cb) offset.
    [9]
    9. traversing device according to one of the preceding claims, characterized in that the drive (5) is connected to a stepped disc (12) having at least two sections with different radii (14,15), wherein the sections of the stepped disc (12) Help of a sensor (13) are recognizable, so that a position and / or a direction of rotation of the drive (5) can be seen.
    [10]
    10. traversing device according to one of the preceding claims, characterized in that movements of the drive (5) and the at least one support drive (6a, 6b) are coordinated.
    [11]
    11. traversing device according to one of the preceding claims, characterized in that the at least one support drive (6a, 6b) at least 75%, in particular at least 90%, of the total on the rail (3) acting train (Zk, Zk ') and / or compressive force (Dk, Dk ') expends.
    [12]
    12. traversing device according to one of the preceding claims, characterized in that the drive (5) comprises a damping element, so that the rail (3) in the traversing movement (Cb), in particular in areas of reversal points of the traversing movement (Cb), is damped.
    [13]
    13. traversing device according to one of the preceding claims, characterized in that the rail (3) is moved at a traversing speed which is between 0.5 cm / s and 5 cm / s.
    [14]
    14. traversing device according to one of the preceding claims, characterized in that the traversing movement (Cb) has an amplitude in the range between 0.3 cm and 15 cm, in particular between 0.3 cm and 5 cm, preferably between 0.4 cm and 1, 0 cm, has.
    [15]
    15. A method for operating a traversing device (1), which is designed according to one or more of the preceding claims, characterized in that a rail (3) of the traversing device (1) of at least one support drive (6a, 6b) and / or a drive (5) with a tensile force (Zk, Zk ') is applied.
    [16]
    16. The method according to the preceding claim, characterized in that the support drive (6a, 6b) and / or the drive (5) the rail (3) with the tensile force (Zk, Zk ') applied, the at least 75%, in particular at least 90%, the total acting on the rail (3) and the traversing movement (Cb) causing force corresponds.
    [17]
    17. The method according to one or more of the preceding claims, characterized in that the support drive (6a, 6b) and / or the drive (5) the rail (3) with the tensile force (Zk, Zk ') applied, the 100% of corresponds to the total acting on the rail (3) and the traversing movement (Cb) causing force.
    [18]
    18. The method according to one or more of the preceding claims, characterized in that a drive (5) and / or a support drive (6a, 6b) at a rail end (7a, 7b) and a drive (5) and / or a backup drive ( 6a, 6b) are arranged at the other rail end (7a, 7b), wherein upon reaching a reversal point of the traversing movement (Cb) of the rail (3) of the pulling drive (5) and / or the support drive (6a, 6b) is turned off and the drive (5) and / or the support drive (6a, 6b) is switched on at the opposite rail end (7a, 7b) of the rail (3), so that he / she the rail (3) with the tensile force (Zk, Zk ' ).
    [19]
    19. The method according to one or more of the preceding claims, characterized in that at both rail ends (7a, 7b), a drive (5) and / or a support drive (6a, 6b) is arranged, wherein the rail (3) at both rail ends (7a, 7b) simultaneously with a tensile force (Zk, Zk) is applied.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP1972822B1|2010-04-07|Wedge brake
    WO2015052109A1|2015-04-16|Arresting brake device for a lift car
    DE2439161B2|1978-07-13|Electronic needle selection device for a circular knitting machine
    EP3430652A1|2019-01-23|Piezoelectric drive
    EP0594652B1|1995-11-08|Machine tool with curved drive, especially for stamping and shaping the connecting pins of integrated circuits
    DE2048959C3|1974-03-21|Brake arrangement for tangential belt driven spindles of spinning and twisting machines
    CH712620A2|2017-12-29|Traversing device for a drafting system of a textile machine and a method for its operation.
    WO1992013127A1|1992-08-06|Warp knitting machine, especially crochet galloon machine
    EP2958785B1|2017-09-27|Transport device and method for operating the transport device
    EP0391246B1|1994-02-09|Paper holding device
    EP2043937B1|2017-09-06|Braking or holding device for temporarily ensuring a safe protected area and the like
    EP3095904A1|2016-11-23|Guide bar assembly for a warp knitting machine
    DE102012022438B3|2014-02-20|Linear drive device for use in milking device for milking cow, has main component including tapping roller that is engaged with gearing part of belt and coupled with position detection unit in response to rotation of tapping roller
    EP3696127A1|2020-08-19|Position determining device for a lift facility
    AT518346A1|2017-09-15|A manufacturing plant for processing a wire wound into a wire bobbin
    DE1952880A1|1970-04-30|Punching machine
    EP3015006B1|2019-04-17|Rod-making machine in the tobacco processing industry with a thread emergency cutting device
    DE102014004076B4|2018-06-14|Injection molding machine with security door
    DE102015221762A1|2017-05-11|Device for adjusting a compression roller of a compression frame
    DE1776269C2|1981-09-03|Synchronizing device in a piston engine
    EP3511459B1|2021-06-02|Warp knitting machine
    DE102010045931B4|2015-08-20|Double mechanical brake element for linear guides
    EP3680372A1|2020-07-15|Drawing frame of a spinning machine
    EP3581447A1|2019-12-18|Force transmission device
    EP3511460A2|2019-07-17|Warp knitting machine and method for operator assistance in a warp knitting machine
    同族专利:
    公开号 | 公开日
    CN107541820B|2021-09-24|
    CN107541820A|2018-01-05|
    CH712620B1|2021-11-15|
    CH712620A8|2018-02-28|
    DE102017113045A1|2017-12-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4227492A1|1992-08-20|1994-02-24|Fritz Stahlecker|Drawing unit sliver guide - gives defined gap between sliver rod and clamping rollers with a reciprocating rod system|
    DE102004017025B4|2004-04-02|2018-05-17|Maschinenfabrik Rieter Ag|Spinning machine with several plug-in drives|
    DE102008064531A1|2008-12-19|2010-07-01|Wilhelm Stahlecker Gmbh|Compressor unit and traversing device for a drafting system|
    CH704671A2|2011-03-21|2012-09-28|Rieter Ag Maschf|Drafting with compacting device on a spinning machine.|
    DE102014108194A1|2014-06-11|2015-12-17|Maschinenfabrik Rieter Ag|Spinning machine and false twisting device|DE102019100603A1|2019-01-11|2020-07-16|Maschinenfabrik Rieter Ag|Drafting system of a spinning machine|
    法律状态:
    2018-01-15| PK| Correction|Free format text: BERICHTIGUNG ERFINDER |
    2018-02-28| PK| Correction|Free format text: BERICHTIGUNG ERFINDER. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102016111530|2016-06-23|
    [返回顶部]