US20170167056A1 - Arrangement of Combing Cylinders in a Combing Machine - Google Patents

Arrangement of Combing Cylinders in a Combing Machine Download PDF

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Publication number
US20170167056A1
US20170167056A1 US15/378,870 US201615378870A US2017167056A1 US 20170167056 A1 US20170167056 A1 US 20170167056A1 US 201615378870 A US201615378870 A US 201615378870A US 2017167056 A1 US2017167056 A1 US 2017167056A1
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US
United States
Prior art keywords
combing
common shaft
offset
detaching
cylinders
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.)
Abandoned
Application number
US15/378,870
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English (en)
Inventor
Daniel Bommer
Ueli Stutz
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.)
Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of US20170167056A1 publication Critical patent/US20170167056A1/en
Assigned to MASCHINENFABRIK RIETER AG reassignment MASCHINENFABRIK RIETER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Bommer, Daniel, STUTZ, UELI
Abandoned legal-status Critical Current

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    • 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
    • D01G19/16—Nipper mechanisms
    • 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
    • D01G19/10—Construction, mounting, or operating features of combing elements
    • 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
    • D01G19/26—Driving arrangements

Definitions

  • the invention relates to a combing machine according to the preamble of patent claim 1 .
  • WO 2010/012112 A1 describes a combing machine having a plurality of combing heads having a nipper assembly with a pivotably mounted upper nipper plate and a rotationally fixed lower nipper plate and each has combing cylinders in a rotationally fixed mount on a common shaft, a movement of the upper nipper plate through a rotational angle position of the combing cylinder is controlled by means of a control unit and each combing cylinder is provided with a combing segment and a detaching segment and wherein a rotatably mounted detaching roller can be advanced to the detaching segment.
  • the device according to WO 2010/012112 A1 has the disadvantage that in the detaching operation the rotatably mounted detaching roller at each combing head is advanced to the corresponding detaching segment at the same time. This results in an increased friction on the outside circumference of the respective detaching segment and an associated braking effect, so that the common shaft experiences an imbalance during operation.
  • the upper nipper plate is also mechanically connected to the common shaft and thus also has an influence on the imbalance of the common shaft.
  • the common shaft is under such a mechanical load that very high torque peaks act on the common shaft in particular when there are a large number of combing heads. These mechanical stresses acting on the common shaft may be so high that the lifetime of the common shaft is greatly reduced.
  • the movement of the upper nipper plate and the movement of the detaching rollers act as noise sources and therefore result in an increased noise burden for the combing machine.
  • the object of the present invention is thus to provide a combing machine which will make it possible to minimize the mechanical loads acting on the common shaft in such a way that the common shaft can be used with a longer lifetime, while the noise burden is also reduced.
  • each combing head has a nipper assembly with a pivotably mounted upper nipper plate and a rotationally fixed lower nipper plate, and each has a combing cylinder in a rotationally fixed mount on a common shaft wherein a movement of the upper nipper plate is controlled by a rotational angle position of the combing cylinder by means of a control unit, and each combing cylinder is provided with a combing segment and a detaching segment on its circumference, and wherein a rotatably mounted detaching roller can be advanced to the detaching segment.
  • At least one combing cylinder in the direction of circumferential rotation of the common shaft is arranged with an offset to the other combing cylinders of the common shaft.
  • the at least one combing cylinder which is arranged with an offset carries out the advance of the detaching roller and the corresponding detaching operation on the detaching segment at a later point in time than the other combing cylinders. Therefore, the load on the common shaft can be compensated mechanically during operation in this way, and this also results in reduced torque peaks.
  • the inventive arrangement of the combing cylinders with an offset relative to one another on the common shaft in the circumferential direction of rotation the mechanical loads acting on the common shaft can be distributed uniformly, so that spot mechanical loads on the common shaft are suppressed.
  • the movement of the upper nipper plate may also be offset in time so that the noise burden on the combing machine is advantageously also reduced.
  • the combing cylinders of neighboring combing heads are preferably arranged with the offset on the common shaft relative to one another in the circumferential direction of rotation. In this way the respective detaching rollers are advanced to a portion of the detaching segments of the combing cylinders from neighboring combing heads at a later point in time so that in particular the mechanical loads on the common shaft act at a later point in time. This results in a reduction in the mechanical loads that act by sections on the common shaft, thereby prolonging the lifetime of the common shaft,
  • the combing cylinders of at least two combing heads form a group, wherein at least one group of heads arranged side by side in the circumferential direction of rotation is arranged with an offset relative to another on the common shaft.
  • the offset of groups arranged side by side has the advantage that, depending on the number of combing heads per group, a corresponding reduction in the resulting torque peak can be achieved.
  • Groups of 2, 4 or 8 combing heads are especially preferably provided. These groups are arranged with an offset relative to one another in the circumferential direction of rotation on the common shaft and thus permit a reduction in the mechanical loads. A reduction in the noise burden is also possible due to the geometric offset of the groups on the common shaft and the associated time lag in the movement of the upper nipper plate and the movement of the detaching rollers.
  • these two-head groups are each arranged with an offset to one another at an angle of 90° on the common shaft in the circumferential direction of rotation.
  • these four-head groups are each arranged with an offset at an angle of 180° to one another on the common shaft in the circumferential direction of rotation.
  • these two-head groups are each arranged at an offset with an angle of 45° to one another on the common shaft in the circumferential direction of rotation.
  • these four-head groups are each arranged with an offset at an angle of 90° to one another on the common shaft in the circumferential direction of rotation.
  • these eight-head groups are each arranged with a offset at an angle of 180° to one another on the common shaft in the circumferential direction of rotation.
  • these two-head groups are each arranged on a common shaft with an offset at an angle of 30° to one another in the circumferential direction of rotation.
  • these four-head groups are each arranged with an offset at an angle of 60° to one another on the common shaft in the circumferential direction of rotation.
  • these eight-head groups are each arranged on the common shaft with an offset at an angle of 120° to one another in the circumferential direction of rotation.
  • the offset on the common shaft preferably amounts to 360°, based on the number of combing heads used or a multiple thereof.
  • the number of combing heads used or a multiple thereof defines the offset of the combing cylinders on the common shaft in the circumferential direction of rotation and in particular it allows an optimal distribution of the combing heads on the common shaft without any risk of imbalance of the common shaft during operation.
  • the resulting torque peak, which the drive motor would have to overcome, can be reduced substantially in this way.
  • the offset between the neighboring combing cylinders on the common shaft in the circumferential direction of rotation forms an angle of 15° or more.
  • the offset at an angle of 15° to the neighboring combing cylinder on the common shaft in the circumferential direction relates to an embodiment in which 24 combing heads are arranged next to one another in an optimal manner.
  • Combing machines having eight or 16 combing heads are also conceivable.
  • the offset optimally has an angle of 45° or 22.5°. Any other number of combing heads per combing machine is of course also possible.
  • the wording “or more” relates to the maximum possible angle of the offset between two neighboring combing cylinders and is limited physically by the outside circumference of the common shaft.
  • the common shaft is preferably divided into at least two subsections, a plurality of combing cylinders being mounted on each subsection and these combing cylinders being arranged with an offset relative to one another.
  • a plurality of combing cylinders can be mounted in a rotationally fixed manner on the respective subsection without an offset in this way, and the different subsections may be arranged with an offset relative to one another.
  • the individual shafts are aligned by using mechanical means (e.g., tongue and groove).
  • the control unit for movement of the upper nipper plate also preferably cooperates with a cam disc, wherein the cam disc is mounted on the common shaft in a rotationally fixed position and the upper nipper plate is supported on the cam disc.
  • the movement of the upper nipper plate is mechanically linked to the angular position of the cam disc so that the arrangement of neighboring combing cylinders with an offset on the common shaft is linked to the movement of the upper nipper plate.
  • the common shaft is preferably provided with positioning means for arrangement with the offset and for fastening the combing cylinders on the common shaft.
  • the positioning means permit a simple visual inspection and at the same time a simple assembly aid.
  • the positioning means are especially preferably designed as holes, recesses or elevations. Screws, rivets or the like may engage in the holes to secure the fastening and positioning. Variously designed pins or pegs may engage in the recesses to ensure an axial displacement and radial locking of the combing cylinders on the common shaft. The elevations on the common shaft may cooperate with recesses on the combing cylinders to ensure optimal positioning.
  • a mark in the form of a color code or an engraving is preferably provided for each combing cylinder on the common shaft. This allows a simple visual inspection in the arrangement of a number of combing cylinders on the common shaft.
  • FIG. 1 shows a schematic side view of a combing machine with an inventive arrangement of three neighboring combing heads on a common shaft;
  • FIG. 2 shows an exemplary embodiment according to FIG. 1 with the nipper opened
  • FIG. 3 shows a graphical plot of a relative torque curve per revolution on a combing head (1 st KK);
  • FIG. 4 shows a graphic plot of relative torque curves per revolution of eight combing heads each with a 45° offset relative to the others (1 st KK to 8 th KK), the resulting torque curve of the eight combing heads offset relative to one another (resultant) and the relative torque curve of eight superimposed combing heads without an offset (1 st KK* 8 ).
  • FIG. 1 shows schematic view of a combing head 10 of a combing machine.
  • a plurality (e.g., 8, 16 or 24) of such combing heads 10 will usually be arranged side by side and connected to one another by means of continuous longitudinal shafts in a drive transferring manner.
  • Each combing head 10 has a combing cylinder 16 rotationally mounted on common shaft 12 and a nipper assembly 18 .
  • a combing cylinder 16 rotationally mounted on common shaft 12 and a nipper assembly 18 for example three combing cylinders 16 a - 16 c having 24 neighboring combing heads 10 on the common shaft 12 are arranged with an offset 14 to one another in the circumferential direction of rotation.
  • the offset 14 between the first combing cylinder 16 a and the neighboring combing cylinder 16 b is at an angle ⁇ of 15°.
  • the other neighboring combing cylinders 16 (not shown) are also arranged with an offset 14 on the common shaft 12 .
  • the nipper assembly 18 which is provided with a lower nipper plate 20 and an upper nipper plate 22 is provided.
  • the upper nipper plate 22 is connected to lateral arms 24 , which are mounted so that they can pivot about a pivot axis 26 on the lower nipper plate 20 .
  • a strap 28 is fastened to the lateral arms 24 (two screw connections are indicated schematically) and form a control unit 29 .
  • Each strap 28 has an axle 30 on each free end of which a roller 32 is rotatably mounted.
  • the rollers 32 are on a circumferential surface 34 of a cam disc 36 , depending on the angular position of the combing cylinder 16 , the cam disc being fastened onto the shaft 12 of the combing cylinder 16 in a rotationally fixed manner.
  • the control unit 29 works together with the cam disc 36 in this way and thus allows movement of the upper nipper plate 22 .
  • the nipper assembly 18 in FIG. 1 is in a closed state and in FIG. 2 in an open state.
  • a fiber tuft 40 protrudes out of the closed nipper assembly 18 and is combed on a combing segment 38 of the combing cylinder 16 .
  • the clamping force of the nipper assembly 18 for clamping the fiber tuft 40 is created by bellows cylinders 42 , which are supported on one end by means of an end face on a transverse strut 44 , which is connected to the pivot arms 45 on the upper grip of plate 22 .
  • the bellows cylinders 42 are fastened to a strut 49 by means of screws at their other ends by way of a receptacle 47 .
  • the strut 49 is fixedly connected to the pivot arms 45 , which are mounted so they can pivot about a pivot axis 51 in the machine frame 53 .
  • a feed roller 52 is mounted so it can rotate, supplying fiber material 54 such as strips, nonwovens or batting intermittently from a source such as reels, cans, etc. (not shown) in the direction of a clamping point 56 of the nipper assembly 18 according to FIG. 1 .
  • This advancement is carried out by a gear (not shown) as a function of the angular position of the common shaft 12 of the combing cylinder 16 .
  • a movably mounted fixation comb 62 and a detaching roller 48 are spaced a distance apart from the circumference of the combing cylinders 16 .
  • a detaching segment 46 a - 46 c which forms a clamping line 57 on a partial area of the circumference of the respective combing cylinder 16 a - 16 c for the combed-out fiber tuft 40 to be pulled away with the displaceable detaching roller 48 , which can be advanced to the detaching segment 46 according to FIG. 2 .
  • a device 58 which forms a fiber nonwoven and by means of which the fiber packages are dispensed by the detaching roller 48 are guided to a fiber nonwoven and/or soldered.
  • the device 58 forming a fiber nonwoven is provided with a perforated revolving drum 60 which is diagrammed purely schematically and downstream from which a pickup roller pair 61 is arranged.
  • Such an apparatus may correspond, for example, to the exemplary embodiment shown in the publication WO 2006/012759 A1.
  • the roller 32 In the closed state of the nipper assembly 18 shown in FIG. 1 , the roller 32 is not in contact with the circumferential surface 34 of the cam disc 36 with the radius R, so that the compressive force generated by the bellows cylinders 42 which are under an excess pressure is fully active at the clamping site 56 of the prong unit 18 . With a further rotation of the common shaft 12 and/or the cam disc 36 , the area of the cam disc 36 enters the area of the roller 32 as shown in FIG. 2 . The roller 32 is therefore raised with respect to the lower nipper plate 20 which is arranged in the stationary position and therefore the swivel arms 45 are pivoted about the pivot axis 51 so that the nipper assembly 18 opens.
  • the detaching roller 48 has been shifted in the direction of the common shaft 12 and together with the detaching segment 46 forms the clamping line 57 for detecting the end of the fiber tuft 40 that has already been combed out.
  • the detaching roller 48 with a load device (not shown) is pressed against the detaching segment 46 in this position.
  • the detaching operation is then initiated, whereupon the fiber sets pulled away via the clamping line 57 are dispensed to the perforated drum 60 on which a fiber nonwoven, which is removed for further processing via the pickup roller pair 61 , is formed.
  • the fixing comb 62 which is diagrammed schematically engages with the fiber tuft 40 , by means of which the fiber material that has been pulled off is drawn through it.
  • FIG. 3 shows the relative torque curve for a comb cycle on a combing head (1 st KK) wherein one revolution of the common shaft corresponds to a combing cycle in which the fiber tuft is combed out and the fiber sets are pulled away.
  • the relative torque curve is given in percentage and is standardized to the maximum positive torque which is approx. 0.6 in the case of the present curve, based on one revolution per combing cycle.
  • the combing cycle is approximately the same for all combing heads of a combing machine and has a torque characteristic like that shown in FIG. 3 and described hereinafter.
  • the relative torque curve can be subdivided into the following regions A through C:
  • region A at 0.3 to 0.5 of the revolution per combing cycle, the nipper is opened by and the detaching roller is advanced to the detaching segment. In this way the fiber tuft is clamped between the detaching roller and the outside surface of the detaching segment and thus causes a braking effect up to 0.4 of the revolution per combing cycle.
  • the movable fixation comb is combing out the fiber nonwoven, and individual fiber sets are pulled away.
  • region B between 0.5 and 0.8 of the revolution per combing cycle follows the nipper and the fiber tuft faces out beyond the clamping site.
  • the fiber set that has been pulled away is processed further by the fiber nonwoven forming apparatus, wherein a control valve is pivoted in the direction of the perforated drum and use in the perforated drum.
  • the combing cylinders 16 a - 16 c of neighboring combing heads be arranged with an offset to one another in the circumferential direction of rotation on the common shaft 12 , as shown in FIGS. 1 and 2 and as described above.
  • the previously superimposed torque curves as shown in FIG. 4 for eight combing heads (1 st KK* 8 ) as an example now begin and end with a time lag from one another as also shown in FIG. 4 .
  • the offset in the combing cylinders for eight neighboring combing heads is arranged on the common shaft at an angle ⁇ of 45° to one another in the circumferential direction of rotation.
  • the torque curves 1 st KK up to 8 th KK per revolution of the common shaft with a time lag are mutually compensated in such a way that the resulting torque curve (“resultant” in FIG. 4 ) is greatly reduced in this way.
  • the resultant from FIG. 4 is an envelope curve of the respective positive and negative torque peaks of the eight combing cylinders that are arranged with an offset from one another on eight neighboring combing heads (1 st KK to 8 th KK). In comparison with the eight superimposed combing cycles, the resultant on eight combing heads (1 st KK* 8 ) shows a great reduction in the positive and negative torque peaks.
  • the torque curve 1KK* 8 has an absolute torque stroke of 1900% (amount from approx, ⁇ 1100% to approx. +800%), while the resultant has an absolute torque lift of 30% (value from approx. ⁇ 135% to approx, ⁇ 165%) with a sinusoidal torque curve. Consequently, due to the arrangement of the eight combing cylinders according to the invention with an offset of 45° from one another on eight neighboring combing heads on the common shaft in the circumferential direction of rotation, the mechanical loads acting on the common shaft are reduced by up to 98%.
  • the common shaft in another exemplary embodiment, it is conceivable for the common shaft to be divided into at least two or more subsections. These subsections are connected to the common shaft by means of drive connections so that a plurality of combing cylinders is mounted in a rotationally fixed manner on each subsection. Accordingly, the combing cylinders are arranged with an offset to one another on the subsections. Toothed drives or belt drives may be used as the drive connection.
  • the plurality of combing cylinders may be arranged without an offset to one another on the subsections, wherein the neighboring subsections have an offset from one another, in that the drive connections from the common shaft to the subsections are arranged with an offset to one another.
  • the offset may be at an angle ⁇ of 15° or more to achieve relief from mechanical loads on the common shaft.
  • a cam disc and an opposing cam disc are provided on the common shaft for each combing head.
  • the opposing cam disc can be used because it compensates mechanically for the mechanical loads acting on the common shaft in the direction opposite the rotational movement of the cam discs. In this alternative way, it is thus also possible to have compensation of the mechanical loads for the common shaft.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US15/378,870 2015-12-15 2016-12-14 Arrangement of Combing Cylinders in a Combing Machine Abandoned US20170167056A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01832/15 2015-12-15
CH01832/15A CH711863A1 (de) 2015-12-15 2015-12-15 Kämmmaschine mit in Umfangsrichtung versetzten Kämmzylindern.

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US20170167056A1 true US20170167056A1 (en) 2017-06-15

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US15/378,870 Abandoned US20170167056A1 (en) 2015-12-15 2016-12-14 Arrangement of Combing Cylinders in a Combing Machine

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US (1) US20170167056A1 (de)
EP (1) EP3181739A1 (de)
JP (1) JP2017110330A (de)
CN (1) CN106939448A (de)
CH (1) CH711863A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022096221A1 (de) * 2020-11-09 2022-05-12 TRüTZSCHLER GMBH & CO. KG Kämmmaschine
WO2022096222A1 (de) * 2020-11-09 2022-05-12 TRüTZSCHLER GMBH & CO. KG Kämmmaschine
US20230123666A1 (en) * 2021-10-14 2023-04-20 Maschinenfabrik Rieter Ag Combing device for combing a fiber material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781050A (en) * 1953-08-31 1957-02-12 Edwards Gordon Liquid flow control valve
US3623741A (en) * 1969-11-12 1971-11-30 Beloit Corp Bidirectionally operable torque actuated expandable core chuck
US4166399A (en) * 1976-03-12 1979-09-04 Schubert & Salzer Drive device for the detaching rollers in combing machines
US5495643A (en) * 1993-07-21 1996-03-05 Kabushiki Kaisha Hara Shokki Seisakusho Method and apparatus for controlling the rocking of a nipper frame in a lap nipping mechanism for a comber
US6591799B1 (en) * 2000-07-10 2003-07-15 Mitsubishi Denki Kabushiki Kaisha Valve timing adjusting device
US20100012112A1 (en) * 2006-08-25 2010-01-21 Ausra Pty Limited Energy collector system having east-west extending linear reflectors

Family Cites Families (7)

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US2633606A (en) * 1951-03-22 1953-04-07 Terrell Mach Co Combing means and method of making and using same
DE502005000595D1 (de) * 2004-04-13 2007-05-31 Rieter Ag Maschf Antrieb für eine Kämmmaschine
CN101035937B (zh) 2004-08-05 2011-06-22 里特机械公司 精梳机
CH698054B1 (de) * 2005-07-26 2009-05-15 Rieter Agpatente Und Lizenzen Kämmmaschine mit mehreren, in einer Reihe angeordneten Kämmköpfen.
CH699285A2 (de) * 2008-07-31 2010-02-15 Rieter Ag Maschf Kämmvorrichtung zum Kämmen eines Fasermaterials.
CN201939079U (zh) * 2010-11-12 2011-08-24 扬州福尔喜果蔬汁机械有限公司 全果碗式柑橘榨汁机驱动系统的平衡机构
CN202108554U (zh) * 2011-05-24 2012-01-11 重庆隆鑫机车有限公司 发动机减压结构总成及其摩托车

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781050A (en) * 1953-08-31 1957-02-12 Edwards Gordon Liquid flow control valve
US3623741A (en) * 1969-11-12 1971-11-30 Beloit Corp Bidirectionally operable torque actuated expandable core chuck
US4166399A (en) * 1976-03-12 1979-09-04 Schubert & Salzer Drive device for the detaching rollers in combing machines
US5495643A (en) * 1993-07-21 1996-03-05 Kabushiki Kaisha Hara Shokki Seisakusho Method and apparatus for controlling the rocking of a nipper frame in a lap nipping mechanism for a comber
US6591799B1 (en) * 2000-07-10 2003-07-15 Mitsubishi Denki Kabushiki Kaisha Valve timing adjusting device
US20100012112A1 (en) * 2006-08-25 2010-01-21 Ausra Pty Limited Energy collector system having east-west extending linear reflectors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022096221A1 (de) * 2020-11-09 2022-05-12 TRüTZSCHLER GMBH & CO. KG Kämmmaschine
WO2022096222A1 (de) * 2020-11-09 2022-05-12 TRüTZSCHLER GMBH & CO. KG Kämmmaschine
US20230123666A1 (en) * 2021-10-14 2023-04-20 Maschinenfabrik Rieter Ag Combing device for combing a fiber material

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CH711863A1 (de) 2017-06-15
CN106939448A (zh) 2017-07-11
JP2017110330A (ja) 2017-06-22
EP3181739A1 (de) 2017-06-21

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