EP4320296A1 - Peigneuse et procédé de fonctionnement d'une peigneuse - Google Patents

Peigneuse et procédé de fonctionnement d'une peigneuse

Info

Publication number
EP4320296A1
EP4320296A1 EP22719860.3A EP22719860A EP4320296A1 EP 4320296 A1 EP4320296 A1 EP 4320296A1 EP 22719860 A EP22719860 A EP 22719860A EP 4320296 A1 EP4320296 A1 EP 4320296A1
Authority
EP
European Patent Office
Prior art keywords
combing
pair
detaching
detaching rollers
rollers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22719860.3A
Other languages
German (de)
English (en)
Inventor
Nicole Saeger
Roland Friedrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Truetzschler Group SE
Original Assignee
Truetzschler Group SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Truetzschler Group SE filed Critical Truetzschler Group SE
Publication of EP4320296A1 publication Critical patent/EP4320296A1/fr
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/14—Drawing-off and delivery apparatus
    • D01G19/18—Roller, or roller and apron, devices, e.g. operating to draw-off fibres continuously
    • D01G19/20—Roller, or roller and apron, devices, e.g. operating to draw-off fibres continuously operating to draw-off fibres intermittently

Definitions

  • the invention relates to a combing machine and a method for operating a combing machine according to the preamble of the independent patent claims.
  • the fiber tuft combed out by the circular comb lies on this rear end section and is pulled together with it into the nip point of the detaching rollers, since the detaching rollers change their direction of rotation again.
  • the fiber tuft is torn off the batting lying in the nipper unit.
  • the rear end of the torn off tuft is pulled through the top comb.
  • the detaching rollers carry out a pilger stepping motion, whereby when they rotate back they return an end piece of the fiber tuft that was drawn off during the previous comb game. The beginning of the fiber tuft is placed on this end piece and soldered together by the pressure of the two detaching rollers after a reversal of the direction of rotation.
  • the detaching rollers not only have to change their direction of movement twice with each comb play, they also have to turn a shorter distance on the reverse than on the forward.
  • a cam disk, cam disk or cam groove is often used, which is firmly coupled to the movement of the tongs via a gear.
  • servomotors are used, which must constantly perform a reciprocating acceleration and deceleration movement.
  • This reciprocating pilgering movement of the detaching rollers is extremely stressful for the shafts with a geared coupling or an electric or servo motor drive of the adjacent combing heads at comb cycles of over 400 per minute, leads to large vibrations on the comber and requires a lot of energy.
  • the drive motors of the detaching rollers must be very powerful and also require powerful servo converters to feed the motors.
  • the permanent acceleration and deceleration results in a high power loss, which is reflected in the energy consumption of the combing machine and makes water cooling of the electric motors necessary for comb cycles of over 500 per minute. This makes the motors very expensive.
  • the invention relates to a combing machine with a plurality of combing heads, with at least one lap sliver being fed to a feed cylinder and a gripper unit on each combing head, the noils being combed out of the lap sliver in the middle and round comb and being sucked off, and the resulting fibrous web being formed into a sliver by means of a funnel is, which is stretched with the other slivers of the other combing heads to form a single sliver.
  • the invention includes the technical teaching that a first pair of detaching rollers and a second pair of detaching rollers are arranged after the gripper unit. Both pairs of detaching rollers are designed to be operated exclusively with a constant direction of rotation during a comb game. The first pair of detaching rollers is operated at a higher speed than the second pair of detaching rollers, at least at the beginning of a combing game.
  • the fiber tuft of the lap sliver is torn out of the gripper unit by an increased rotational speed and placed overlapping on the fibrous web, which is conveyed at a lower rotational speed of the second pair of detaching rollers. Due to the higher speed of rotation of the first pair of detaching rollers relative to the second pair of detaching rollers, an overlap length is created with which the torn-off tuft can be placed on the fibrous web. According to the invention, the soldering process thus takes place between the pairs of detaching rollers. The connection between the torn fiber tuft from the wadding band and the fiber web formed thus takes place in the nip of the second pair of detaching rollers.
  • the soldering process has thus shifted from before the first pair of detaching rollers to after the first pair of detaching rollers or before the second pair of detaching rollers.
  • the nip point has also shifted from the first pair of detaching rollers to the second pair of detaching rollers.
  • the invention has the advantage that with the continuous direction of rotation of the detaching rollers, smaller motors and/or a simpler gear can be used, with which a higher number of comb cycles is nevertheless possible.
  • a transmission solution results in a significantly simpler transmission for realizing the movement according to the invention. Due to the lack of acceleration, deceleration and the reversal of the direction of rotation of the detaching rollers the energy consumption of the comber is reduced. The process of tearing off the fiber tuft and the subsequent soldering process to the fiber web takes place more continuously, as a result of which the fleece wave of the fiber web is significantly reduced or no longer occurs in comparison to the prior art.
  • the detaching rollers are driven by means of at least one gear which is designed to change the rotational speed of one or both pairs of detaching rollers at the beginning of a comb play and when the detaching rollers reach a further position.
  • the at least one gear can drive both pairs of detaching rollers, or each pair of detaching rollers has its own separate gear.
  • the gear is or are designed to set the beginning of the comb play depending on the movement of the nipper unit.
  • the at least one gear is also designed to set the rotational speed of each pair of detaching rollers at the beginning of the comb spit and to change this rotational speed again when a further adjustable rotational position is reached.
  • the tuft with the fibrous web can enter the nip of the second pair of detaching rollers at the same speed without delay.
  • the transfer point of the fiber tuft clamped by the nipper unit to the first pair of detaching rollers can be adjusted by adjusting the gear or gears to the movement of the nipper unit.
  • the evenness of the fibrous web is also influenced by the adjustment of the movement function of the first pair of detaching rollers to the nipper unit, in which the moment at which the fiber tuft is torn off from the lap sliver clamped by the nipper unit is determined.
  • each pair of detaching rollers has its own motor, which can be set separately in terms of speed, angle of rotation and starting time for a combing game.
  • the combing machine has a controller that is designed to change the rotational speed of one or both pairs of detaching rollers when an adjustable index position of the motors is reached . After reaching a set overlapping length, the tuft with the fibrous web can enter the nip of the second pair of detaching rollers at the same speed without delay. The length of the overlap between the tuft and the batt can be adjusted by controlling the motors.
  • the transfer time of the fiber tuft clamped by the nipper unit to the first pair of detaching rollers can also be set via the control of the motors.
  • the evenness of the fibrous web is also influenced by the adjustment of the movement function of the first pair of detaching rollers to the nipper unit, in which the moment at which the fiber tuft is torn off from the lap sliver clamped by the nipper unit is determined.
  • the position of the first pair of detaching rollers relative to the nipper unit can preferably be adjustable, so that this geometry can be adjusted to the feeding amount of the nipper unit and to the overlapping length of the tuft on the fibrous web depending on the fiber quality or fiber length.
  • the overlapping length and thus the combing process can preferably also be influenced with the adjustability of the distance between the pairs of detaching rollers. This ensures that the fiber tuft is placed on top of the fiber web properly.
  • the controller can be designed to synchronize or adjust the time at which the fiber tuft is torn off from the lap sliver clamped by the nipper unit with the start of the comb play of the first pair of detaching rollers.
  • At least one guide plate or limiter can preferably be arranged between the pairs of detaching rollers, with which the soldering process is improved.
  • At least one device for generating compressed air or a vacuum can be arranged between the pairs of detaching rollers. In this way, the fiber tuft and/or the fiber web can be deflected, as a result of which the soldering process can be carried out more precisely.
  • At least one guide element can be arranged here, with which the fibrous web is guided to a funnel.
  • the guide element can be rounded so that the edges of the fiber batt turn over and the quality of the fiber batt that is drawn off becomes more even.
  • a further space-saving embodiment can be designed in such a way that after the second pair of detaching rollers at least one transverse belt take-off can be arranged, which is designed to guide the resulting fiber web to a funnel.
  • the method according to the invention is characterized in that after the gripper unit, a first pair of detaching rollers and a second pair of detaching rollers are arranged, which are both operated exclusively with the same direction of rotation during a combing game, with the first pair of detaching rollers being operated at a higher rotational speed at least at the beginning of a combing game is formed as the second pair of detaching rollers and thereby an overlapping length between a torn fiber tuft and the resulting fibrous web between the pairs of detaching rollers, so that the soldering process after the first Pair of detaching rollers The soldering process takes place with the direction of rotation of the detaching rollers always remaining the same between the pairs of detaching rollers.
  • the invention has the advantage that with the continuous direction of rotation of the detaching rollers, a simpler gear and/or smaller motors can be used, with which a higher number of comb cycles is nevertheless possible.
  • the energy consumption of the comber is reduced due to the lack of acceleration, braking and reversal of the direction of rotation of the detaching rollers.
  • the process of tearing off the fiber tuft and the subsequent soldering process to the fiber batt takes place more continuously, as a result of which the fleece wave of the fiber batt is no longer present in comparison to the prior art.
  • FIG. 1 shows a schematic side view of a combing head of a combing machine according to the prior art
  • Fig. 2 shows the detaching roller movement according to the invention
  • Figure 4 shows a further alternative movement diagram of the pairs of detaching rollers
  • Figure 5 shows a further alternative movement diagram of the pairs of detaching rollers
  • Figure 6 shows another alternative movement diagram of the pairs of detaching rollers
  • Figure 7 shows another alternative movement diagram of the pairs of detaching rollers
  • FIG. 12 shows a further representation of the guidance of the fibrous web after the second pair of detaching rollers
  • Fig. 13 shows an alternative embodiment of the guidance of the batt after the second pair of tear-off wads
  • FIG. 1 shows a prior art combing head 20, at least eight of which are mounted on a comber.
  • the exemplary embodiment is shown and described in terms of only one combing head 20, the details thereby shown being installed on each of these combing heads, except for the common drive units and the sliver coiler.
  • the combing head 20 consists, among other things, of two lap transport rollers 2, 3, on which a lap lap 1 with a winding tube lies and from which the lap 4 is unwound by a tensile load through a feed roller 7.
  • the winding transport rollers 2, 3 can be driven individually or both together.
  • the design of the lap transport rollers 2, 3, whether they are only rotating and not driven, or driven individually or both, is not relevant to the invention.
  • the wadding 4 is transferred to a feed cylinder 7 of a tong unit 5 .
  • the nipper unit 5 can be driven back and forth by levers via a shaft 6, which is connected to a gear 17. According to the example shown, the nipper unit 5 is in a forward position and transfers the combed-out tuft to a subsequent first pair in the fiber transport direction Detaching rollers 10, 12. Below the nipper unit 5, a circular comb 8 is rotatably mounted, which combs out the tuft presented by the closed nipper via its comb segment. The circular comb 8 is also drive-connected to the gear 17 .
  • a ratchet wheel is fastened to the feed cylinder 7, which is rotated stepwise by the reciprocating motion of the nipper unit 5 by a pawl, also not shown, and thereby feeds the lap 4 to the pliers' mouth for combing out.
  • the lap sliver 4 is continuously unrolled by the rotational movement of the lap 1 via the lap transport rollers 2, 3 and reaches the feed cylinder 7.
  • the lap is then fed via the feed cylinder 7 to the nipper mouth of the nipper unit 5 for combing and then to the fiber transport direction first pair of detaching rollers 10, 12 released.
  • the end of the fiber tuft that is released is pulled through the top comb 9 and soldered to the previous tuft.
  • the resulting fiber web 14 is passed over a second pair of detaching rollers 11, 13 in the fiber transport direction.
  • the resulting fiber web 14, which consists of individual soldered sticks of tuft, is drawn by take-off rollers 16 through a funnel 15 and formed into a sliver 21 and fed to a drafting system, not shown, with the slivers also formed at the other combing heads.
  • the web emerging from the drafting system is combined into a fiber sliver, the so-called comber sliver, and transferred to a sliver coiler for storage in a can.
  • the nipper unit 5 is moved into a front, open position, with the detaching rollers 10, 12 removing a previously combed tuft with its rear end section by rotating it backwards in the direction of the front end section of the cotton clamped by means of the pliers.
  • the detaching rollers 11, 13 perform the same movement, so that the fibrous web 14 is moved back a little.
  • the tuft combed out by the circular comb 8 lies on this rear end section and is pulled together with it into the nip of the detaching rollers 10, 12, since the detaching rollers 10, 12 and 11, 13 change the direction of rotation again.
  • the fiber tuft is torn off from the lap lying in the nippers unit 5 .
  • the rear end of the torn-off tuft is pulled through the top comb 9 .
  • the detaching rollers 10, 12, 11, 13 carry out a pilgering step movement, whereby they return an end piece of the fiber tuft drawn off during the previous comb game when they rotate back.
  • the initial piece of the fiber tuft is placed on this end piece and soldered together by the pressure of the two detaching rollers 10, 12 after a reversal of the direction of rotation.
  • FIG. 1 shows the basic principle of the invention, according to which both the first pair of detaching rollers 10, 12 and the second pair of detaching rollers 11, 13 rotate in the same direction during the entire combing process, and thereby transport the resulting fibrous web 14 to the draw-off rollers 16.
  • An existing combed and formed fibrous web 14 is transported in the direction of take-off rollers 16, to which, after the first pair of detaching rollers 10, 12, a torn tuft of the lap 4 is soldered.
  • the tuft of the lap sliver 4 is torn out of the gripper unit 5 by an increased rotational speed and placed overlapping on the fibrous web, which is moved at a lower rotational speed of the second pair of detaching rollers 11, 13.
  • the soldering process thus takes place according to the invention between the pairs of detaching rollers 10, 12; 11, 13.
  • the connection between the torn fiber tuft from the lap band 4 and the formed fiber batt 14 thus takes place in the clamping point of the second pair of detaching rollers 11, 13.
  • a guide plate 22 is arranged between the pairs of detaching rollers, and the torn-off tuft is placed on top of the plate in an overlapping manner on the fibrous web 14 .
  • the guide plate 22 can, for example, have one or more passages for compressed air, ie it can be perforated, for example.
  • the combing process can be done as in the classic combing with the circular comb 8, in which this outstanding in the nipper unit 5 combs out the next tuft.
  • the top comb 9 continues to be used and pierces the end of the torn off tuft when the first pair of detaching rollers tears the tuft out of the nipper unit 5 when accelerating , 12 are adjusted so that the new fiber tuft can be transferred from the gripper unit 5 to the nip of the first pair of detaching rollers 10, 12.
  • These distances like the distances between the detaching roller pairs, are adjustable and can be adapted to the overlap length L2 and the feed amount.
  • the detaching rollers 10, 12; 11, 13 driven by at least one gear, not shown, which is designed, at the beginning of a combing game and when the detaching rollers reach a further position, the rotational speed of one or both detaching roller pairs 10, 12; 11, 13 to change.
  • the at least one gear can both pairs of detaching rollers 10, 12; 11, 13 drive, or each detaching roller pair 10, 12; 11, 13 has its own separate gear.
  • the gear is or are designed to adjust the start of the comb play depending on the movement of the nipper unit 5 .
  • the at least one gear is also designed, at the beginning of the comb game, the rotational speed of each pair of detaching rollers 10, 12; 11, 13 in size and, in addition, to change this rotational speed again when a further rotational position has been reached and can be set. After reaching a set overlapping length, the tuft with the fibrous web 14 can enter the nip of the second pair of detaching rollers 11, 13 at the same speed without delay. Likewise, the transfer time of the fiber tuft clamped by the nipper unit 5 to the first pair of detaching rollers 10, 12 can be adjusted by adjusting the gear or gears to the movement of the nipper unit 5.
  • the uniformity of the fibrous web 14 is further influenced by the tuning of the movement function of the first pair of detaching rollers 10, 12 to the nipper unit 5, in which the moment at which the tuft is torn off from the lap sliver 4 clamped by the nipper unit 5 is determined.
  • FIGS. 3 to 7 show, by way of example, the sequence of movements of the pairs of detaching rollers 10, 12; 11, 13 with a separate motor for each pair of detaching rollers 10, 12; 11, 13.
  • the sequence of movements is identical in a technical solution using gears, the index positions of the motor then being determined by a gear position or the time sequence of the rotary movement of the detaching rollers 10, 12; 11, 13 can be displayed.
  • the transmission is designed to operate the two detaching roller pairs (10, 12; 11, 13) at a higher or lower rotational speed after the overlap length (L2) has been formed.
  • the combing machine has a controller with which the drives or motors of the detaching rollers 10, 12; 11, 13 can be controlled.
  • each pair of detaching rollers 10, 12; 11, 13 has a separate motor, which can be designed as a servomotor or motor-gear combination.
  • the pairs of detaching rollers can be set independently of each other via the separate motors, at least in terms of the rotational speed and the start of the combing.
  • the angles of rotation of the detaching rollers 10, 11, 12, 13 are entered on the ordinate in the first movement diagram and the index position of the associated drive motor is entered on the abscissa, which can be converted into a comparable time for a comb play.
  • the movement of the second pair of detaching rollers 11, 13 in the fiber transport direction is drawn as a solid line
  • the movement of the first pair of detaching rollers 10, 12 is drawn as a dashed line.
  • the gripper unit 5 is in the foremost position and the clamping line of the first pair of detaching rollers 10, 12 grasps the tuft.
  • the second pair of detaching rollers 11, 13 rotate at a constant speed and direction of rotation over a combing cycle and rotate through 125°.
  • a fibrous batt 14 is transported over the (circumferential) length L1 of the detaching rollers 11, 13 in the direction of the take-off rollers 16 225°.
  • the angle of rotation in this exemplary embodiment is 75° for the second pair of detaching rollers 11, 13, so that the difference in angle of rotation or the difference in circumferential length results in the overlap length L2 of the torn-off fiber tuft from the lap 4 with the fibrous web 14, both with the following same one Rotational speed and the same direction of rotation in the second pair of detaching rollers 11, 13 is soldered.
  • index position 11 from 24 to 40 to 8.2 is due to the same direction of rotation, but the different rotational speed of the pairs of detaching rollers 10,12; 11, 13, the overlap length L2 is formed, which is formed by the higher rotational speed of the first pair of detaching rollers 10, 12. Soldering occurs at index position I2 from 8.2 to 24, where both pairs of detaching rollers 10,12; 11,
  • the second pair of detaching rollers 11, 13 rotate at a higher rotational speed at the beginning of the combing game than in the exemplary embodiment in FIG.
  • the angle of rotation of the first pair of detaching rollers 10, 12 is 250°, so that an overlap length of L2 is formed, which corresponds to a difference in angle of rotation of 150°.
  • both pairs of detaching rollers 10,12 rotate; 11, 13 again at the same rotational speed, so that the overlap length L2 remains constant and the tuft of the lap 4 is soldered to the fibrous web 14 as it passes through the second pair of detaching rollers 11, 13.
  • the conveying path of the second pair of detaching rollers 11, 13 is the same as in the first exemplary embodiment in FIG so much faster that, despite the increased speed of the second pair of detaching rollers 11, 13, the difference is still greater than in FIG. 3.
  • Both pairs of detaching rollers 10, 12; 11, 13 start at a different rotational speed and reduce this to the identical rotational speed when the required or set overlap length L2 is reached.
  • the first pair of detaching rollers 10, 12 rotate faster than the second pair of detaching rollers 11, 13 to form the overlap length L2.
  • both pairs of detaching rollers reduce their speed of rotation and both rotate at the same speed.
  • both pairs of detaching rollers rotate at a different rotational speed, with the first pair of detaching rollers 10, 12 rotating faster than the second pair of detaching rollers 11, 13 at the beginning of the combing cycle in order to form the overlap length 12.
  • both pairs of detaching rollers rotate at the same rotational speed, with both pairs of detaching rollers having increased this speed.
  • the soldering process only takes place at a later index position, since the second pair of detaching rollers 11, 13 is driven at a very slow rotational speed.
  • the soldering process only starts here at an index position of 15, i.e. only in the last quarter of the combing cycle.
  • the overlap length L2 can be varied due to the speed difference between the pairs of detaching rollers and by changing the speed at the same or different index positions of the individual pairs of detaching rollers. To complete the soldering process optimize, it makes sense to have the same rotational speed of both pairs of detaching rollers, since otherwise a relative movement between the fiber web 14 and the tuft of the batting sliver 4 when passing through the second pair of detaching rollers 11, 13 takes place.
  • FIG. 7 shows that both pairs of detaching rollers 10, 12; 11, 13 continue to turn at a constant but different rotational speed even after the overlap length L2 has been reached. Since the rotational speed of the first pair of detaching rollers 10, 12 continues to increase after the overlapping length 12 has been reached in relation to the second pair of detaching rollers 11, 13, the fiber tuft of the batting sliver 4 is pushed onto or into the fibrous web 14 and can, at least in the case of long fibers damming up before the second pair of detaching rollers 11, 13. In the case of short fibers, this effect can be advantageous since the fiber ends are shifted into one another.
  • FIG. 8 shows the detaching roller pairs 10, 12 and 11, 13 which are arranged at a greater distance from one another.
  • This is technically possible and advantageous with this method for soldering the fiber tuft from the wadding 4 to the fiber batt 14 between the pairs of detaching rollers compared to the classic combing method, since, depending on the overlap length L2, the distance according to the prior art is too small to good management of the fiber beard and good soldering to the fiber web 14 to be realized.
  • the size of the distance between the detaching roller pairs is preferably adjustable so that with a large overlap length L2 the tuft is guided well and can be laid precisely on the fibrous web 14 without the tuft being caught by the second pair of detaching rollers 11, 13 at the same time.
  • the soldering of the fibers and the guiding of the fiber web formed in the nip line of the second pair of detaching rollers can thus be influenced.
  • the more generous dimensioning of the distances also has the advantage that the production costs are reduced, since the components and their bearings no longer have to be built so compactly. In addition, this also makes the maintenance of the combing machine easier.
  • FIG Rotational speed of the first pair of detaching rollers 10, 12 is pressed upwards and placed on the fiber gate 14 and is soldered so that it overlaps.
  • FIG. 9 shows a further embodiment in which compressed air 23 presses the pulled-off fiber gate 14 downwards from above, so that the incoming fiber tuft of the wadding 4 is placed on the fiber gate 14 and is soldered to overlap it.
  • This embodiment is advantageous with regard to the clearing roller arranged above and between the pairs of detaching rollers, since its rotational movement conveys air from above between the pairs of working rollers.
  • the compressed air is emitted in pulses, so that with each combing cycle, a short compressed air pulse is emitted between the detaching roller pairs for the moment just before soldering.
  • Figure 10 shows the guide plate 22 already arranged in Figure 2 between the pairs of detaching rollers, which is extended downwards at an angle to the second lower detaching roller 11 by an arc in the horizontally arranged area and thus forms a gap to the second lower detaching roller 11, which is suctioned by means of vacuum 24 .
  • the negative pressure 24 can be generated at this point by the system suction pressure of the combing machine, which is already present under all combing heads, for example for the suction of the short fibers.
  • the existing vacuum 24 of the combing machine can be used without this having to take place in a pulsed manner.
  • this can be reinforced by a pulse-like blast of compressed air 23, which takes place from above into the gap between the guide plate 22 and the second lower detaching roller 11.
  • FIGS. 8 to 10 With the application of compressed air or the generated negative pressure, a deflection of the fiber tuft or fiber batt is achieved, as a result of which the connection of the two to one another is first delayed, but then created with the full overlapping length. As a result, the fibers are laid one on top of the other more evenly and connected by the subsequent nip point of the second pair of detaching rollers.
  • the designs of FIGS. 8 to 10 can be combined and varied as desired.
  • the fiber tuft has already been soldered to the fiber gate 14 and in the next step is conveyed through the clamping point of the second pair of detaching rollers 11, 13 and connected to one another.
  • a cleaning roller 25 is arranged, which cleans both pairs of detaching rollers at the same time through its rotary movement. So that the air circulation occurring through the cleaning roller 25 does not disturb the soldering process between the pairs of detaching rollers, is vertically below the cleaning roller 25 but above of the batt 14 a limiter 26 is arranged, which is located in a horizontal arrangement between the upper detaching rollers 12,13.
  • the limiter 26 can additionally be designed to prevent undesired air circulation be to guide the tuft with the batt 14 on top.
  • the mechanical guidance of the fiber tuft tip by the limiter 26 can improve the soldering process, since wavy thin and thick spots are avoided during the soldering process.
  • a combination of the limiter 26 with the embodiments of Figures 2 and Figures 8 to 10 is of course possible.
  • the limiter 26 increases the uniformity of the fibrous web 14, since the fiber tuft emerging from the first pair of detaching rollers 10, 12 is guided without air turbulence, so that it is soldered on more evenly.
  • instead of one cleaning roller 25, which cleans both upper detaching rollers 12, 13, two laterally offset cleaning rollers or other means for cleaning detaching rollers 12, 13 can be used which do not cause any undesirable air flow onto the soldered area between the detaching roller pairs.
  • FIG. 12 shows the transformation of the flat fibrous web 14 into a sliver 21 behind the second pair of detaching rollers, of which the upper detaching roller 13 can be seen in the plan view.
  • the fibrous web 14 is guided along a guide element 27 to the funnel 15, formed therein into a sliver 21 and drawn off by means of the draw-off rollers 16.
  • the invention also has an effect on the design of the combing machine here, since the soldering process takes place more continuously due to the lack of a pilgrim stepping movement and the existing wave movement of the fiber web 14 therefore no longer occurs.
  • the fiber web has a web wave that is caused by the periodic Irregularity of the mit step movement and the discontinuous soldering process is generated.
  • the previous area of the fleece bowl, on which the wavy structure of the fibrous web 14 was settled, can be made significantly shorter, so that the fibrous web 14 can be fed to the funnel 15 to form a sliver 21 immediately after the second pair of detaching rollers 11, 13.
  • the guide element 27 attached at an angle to the side can be designed as a rectangular or round bar or rib and guides the fibrous web 14 on one side from one end of the detaching rollers 11, 13 to the funnel 15.
  • the previous fleece bowl for calming the fibrous web can be omitted completely, so that the combing machine can be made more compact.
  • the guide element 27 can be directly adjacent to the gusset of the second pair of detaching rollers 11, 13 and arranged at an angle. A rounded contour causes the lateral edges of the fibrous web 14 to turn over, which are thus stabilized.
  • the guide element 27 can preferably be designed to be adjustable.
  • the take-off area of the fibrous web 14 after the second pair of detaching rollers 11, 13 can be further shortened by conveying the fibrous web 14 to the funnel 15 by means of a cross-belt take-off 28 .
  • the cross belt take-off 28 is arranged on one side so that it conveys the fibrous web 14 over almost the entire width or length of the detaching rollers 11, 13 to the funnel 15.
  • the cross belt take-off 28 is formed on both sides of the funnel 15, is arranged more to the center of the detaching rollers 11, 13.
  • Figures 12 to 14 shorten not only the area of sliver formation after Detaching rollers 11, 13, but also stabilize the edges of the batt.
  • the off-centre withdrawal of the fibrous web 14 compensates for possible non-uniform structures caused by the soldering process.
  • Downstream of the take-off device of FIGS. 12 to 14, further strengthening elements, not shown, can be arranged behind the take-off rollers 16, with which the sliver 21 can be equalized, for example pressure rollers whose surface can vary, for example rubber-coated rollers or rollers with a metallic surface.
  • the invention has the advantage that, with the continuous direction of rotation of the detaching rollers 10-13, smaller motors and/or simpler gears can be used, with which a higher number of comb cycles is nevertheless possible.
  • the energy consumption of the comber is reduced due to the lack of acceleration, braking and reversal of the direction of rotation of the detaching rollers.
  • the process of tearing off the fiber tuft and the subsequent soldering process to the fibrous web 14 takes place more continuously, which means that the fleece wave of the fibrous web is significantly reduced or completely eliminated compared to the prior art of the first pair of detaching rollers 10, 12 passes.
  • the position of the first pair of detaching rollers 10, 12 relative to the gripper unit 5 is preferably designed to be adjustable.
  • the distance between the pairs of detaching rollers can be designed to be adjustable in order to influence the soldering process due to the adjustable overlapping length of the soldered fibers.
  • the uniformity of the fibrous web 14 is further influenced by the tuning of the movement function of the first pair of detaching rollers 10, 12 to the nipper unit 5, in which the moment at which the tuft is torn off from the lap sliver 4 clamped by the nipper unit 5 is determined.
  • the size of the overlapping length L2 can be selected to be larger for longer fibers and smaller for shorter fibers.
  • the overlapping length L2 can be adjusted relative to one another by the speed profiles of the first and second pair of detaching rollers.
  • the web weight and thus the sliver number as well as the Cv value of the respective combing head can be set directly.
  • a greater distance between the pairs of detaching rollers may be necessary, for example, so that the fiber tuft can be soldered properly to the fibrous web 14 and the fibrous web 14 is guided into the nip line of the second pair of detaching rollers 11, 13 in order to ensure the subsequent uniformity of the fibrous web 14 influence.
  • the soldering process can be assisted by various means, as disclosed in the embodiments of Figures 2 and 8-11.
  • an even fibrous web is produced without a fleece wave, so that the sliver formation area after the second pair of detaching rollers can be shorter and easier to build up.
  • the previous fleece bowl for calming the fibrous web can thus be omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

L'invention concerne une peigneuse et un procédé de peignage de fibres, comprenant une peigneuse ayant une pluralité de têtes de peignage (20), au moins un ruban de recouvrement (4) se déroulant à partir d'un rouleau de recouvrement (1) au niveau de chaque tête de peignage (20) et étant alimenté dans un cylindre d'alimentation (7) et un ensemble pince (5), les blousses étant peignées et éliminées par aspiration à partir du ruban de recouvrement (4) au moyen d'un peigne fixe et cylindrique (9, 8), et la bande de fibres créée étant formée au moyen d'une trompette (15) en un ruban de fibres, qui est étiré avec les autres rubans de fibres depuis les autres têtes de peignage en un seul ruban de fibres. L'invention est caractérisée en ce qu'une première paire de rouleaux de détachement (10, 12) et une seconde paire de rouleaux de détachement (11, 13) sont disposées en aval de l'ensemble pince (5), les deux paires de rouleaux de détachement (10, 12 ; 11, 13) étant conçues pour fonctionner exclusivement avec une direction de rotation constante pendant un cycle de peignage, la première paire de rouleaux de détachement (10, 12) étant actionné à une vitesse supérieure à celle de la seconde paire de rouleaux de détachement (11, 13), au moins au début d'un cycle de peignage.
EP22719860.3A 2021-04-08 2022-03-30 Peigneuse et procédé de fonctionnement d'une peigneuse Pending EP4320296A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021108734.1A DE102021108734A1 (de) 2021-04-08 2021-04-08 Kämmmaschine und Verfahren zum Betrieb einer Kämmmaschine
PCT/EP2022/058453 WO2022214379A1 (fr) 2021-04-08 2022-03-30 Peigneuse et procédé de fonctionnement d'une peigneuse

Publications (1)

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EP4320296A1 true EP4320296A1 (fr) 2024-02-14

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EP22719860.3A Pending EP4320296A1 (fr) 2021-04-08 2022-03-30 Peigneuse et procédé de fonctionnement d'une peigneuse

Country Status (4)

Country Link
EP (1) EP4320296A1 (fr)
CN (1) CN117083424A (fr)
DE (1) DE102021108734A1 (fr)
WO (1) WO2022214379A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1090255C (zh) * 1996-03-29 2002-09-04 里特机械公司 精梳机的分离－和接合装置
EP1586682B1 (fr) * 2004-04-13 2007-04-18 Maschinenfabrik Rieter Ag Entraînement pour une peigneuse
IT201800001987A1 (it) * 2018-01-26 2019-07-26 Marzoli Machines Textile Srl Macchina pettinatrice
IT201800004119A1 (it) * 2018-03-30 2019-09-30 Marzoli Machines Textile Srl Pettinatrice di una linea di preparazione alla filatura e metodo di lavoro

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WO2022214379A1 (fr) 2022-10-13
CN117083424A (zh) 2023-11-17
DE102021108734A1 (de) 2022-10-13

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