EP4183908A1 - Support pour un peigne rond d'une machine à peigner - Google Patents

Support pour un peigne rond d'une machine à peigner Download PDF

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Publication number
EP4183908A1
EP4183908A1 EP22164473.5A EP22164473A EP4183908A1 EP 4183908 A1 EP4183908 A1 EP 4183908A1 EP 22164473 A EP22164473 A EP 22164473A EP 4183908 A1 EP4183908 A1 EP 4183908A1
Authority
EP
European Patent Office
Prior art keywords
circular comb
carrier
support
spring
support surface
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
EP22164473.5A
Other languages
German (de)
English (en)
Inventor
Christian Dratva
Tobias BURKHARD
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.)
Graf und Cie AG
Original Assignee
Graf und Cie AG
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 Graf und Cie AG filed Critical Graf und Cie AG
Publication of EP4183908A1 publication Critical patent/EP4183908A1/fr
Pending legal-status Critical Current

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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
    • D01G19/10—Construction, mounting, or operating features of combing elements
    • D01G19/105—Combing cylinders

Definitions

  • the present invention relates to a carrier for a circular comb of a combing machine, as well as a combing device and a combing machine with such a carrier.
  • Such supports for circular combs are used for combing machines for combing out a submitted fiber mass (cotton, wool, etc.), the submission of the fiber mass being in the form of wadding webs wound on sleeves or in the form of individual slivers.
  • the numbers of nips (nips/minute) have increased significantly in recent years, which also brings with it an increase in productivity.
  • the circular combs used in practice for the combing machine consist of a circular comb carrier which is provided with a clamping hub or some other type of support surface with which it is fixed in a rotationally fixed manner on a driven circular comb shaft.
  • a combing segment is fastened to a partial circumference of the circular comb carrier, with which the end of the fiber mass (also called fiber tuft) presented by a nipper unit is combed out.
  • the carrier consists of a hollow profile, which has an outer circular arc-shaped section for accommodating the combing set and with an inner section opposite this, with a semicircular trough open in the direction of the shaft, which extends in the longitudinal direction of the hollow profile and over which the carrier extends supported on a shaft. In this way, the mass and thus the mass moment of inertia of the carrier can be kept low.
  • a disadvantage of the previously known designs is that retrofitting new circular combs to circular comb shafts that have been in use for some time is not possible without reworking the circular comb shafts. An undamaged and flawless concentric surface of the crested shaft is a prerequisite for the intended attachment of the carrier.
  • the object of the present invention is therefore to create a carrier for a circular comb, which enables assembly on circular comb shafts that are already in use and results in an increase in the service life of the fastening elements of the carrier.
  • a support for a circular comb of a combing machine with a clothing support surface for receiving a comb clothing and with at least one support surface opposite the clothing support surface for supporting the support on a circular comb shaft, the support surface being designed as at least one pair of spring ribs.
  • a wear protection element is assigned to the support surface.
  • the Designing the support surfaces as a pair of spring ribs has the advantage that the height of the comb set relative to the circular comb axis can be adjusted directly via the fastening elements of the carrier.
  • the pair of spring ribs is designed as opposite ribs with one end directed freely into the space against the circular comb axis, or directed into the space below an upper edge of the circular comb shaft.
  • Support surfaces are provided at the ends of the ribs of the pair of spring ribs, which are brought into contact with a surface of a circular comb shaft located in the circular comb axis under a deflection of the spring ribs determined by a tension of the fastening elements.
  • the distance between the comb clothing and the circular comb axis can thus be adjusted by varying the deflection of the pair of spring ribs.
  • the ribs of the pair of spring ribs are correspondingly deflected by the surface of the crested shaft when the carrier is mounted on the crested shaft.
  • the support surfaces provided on the spring ribs can be provided as actual straight or arcuate surfaces.
  • a convex shape of the ends of the spring ribs is also to be understood as a support within the meaning of the application.
  • the spring rib rests linearly on the surface of the crested shaft when it rests against the crested shaft.
  • the carrier is mounted on the crested shaft, the spring ribs are deflected and the carrier is pushed away from the crested shaft by the bending force of the spring ribs or pulled onto the crested shaft by the fastening elements.
  • the wear protection element counteracts the stresses caused by the movement of the circular comb, which has a direct effect on a contact surface between a surface of the circular comb shaft and the carrier.
  • the wear protection element is designed as a rubber element applied to the support surface of the pair of spring ribs.
  • the design as a rubber element has the additional advantage that a galvanic isolation is achieved between the support surfaces of the carrier and the comb shaft on which the carrier is supported. This ensures protection against corrosion, which is due to the different materials of carrier and comb shaft can occur.
  • the rubber element is glued onto the support surface of the carrier.
  • the rubber element can be attached to the spring rib in a form-fitting manner.
  • corresponding latching elements can be provided on the spring rib and on the rubber element.
  • a non-positive connection between the rubber element and the spring rib is also possible through a corresponding design of the spring ribs in the area of the support surfaces and a shaping of the rubber element. Due to its vibration-damping properties, the rubber element absorbs micro-vibrations (relative movements of the support surfaces to the surface of the circular comb shaft) caused by the movements of the circular comb carrier, without causing a differential movement of the surfaces, which would result in increased wear.
  • the wear protection element is designed as a coating or painting of the spring ribs.
  • the coating or painting can be limited to the area of the support surface.
  • a paint finish with high sliding properties or a low coefficient of friction, together with high compressive strength, is provided, as a result of which a wear-resistant coating is achieved.
  • a coating made of PTFE (Teflon) or with an insert of molybdenum sulfide (MOS 2 ) is preferably provided. Such a coating can be done by gluing, applying in liquid form or as a powder coating.
  • a particularly preferred type of paint used is designed in such a way that the paint, as with the rubber element, can absorb the micro-vibrations without any sliding occurring between the support surface and the round comb shaft.
  • the wear protection element is designed as a spring plate, the spring plate being provided as a separating means between the support surface and the circular comb shaft.
  • the design with a separating plate has the advantage that simple production is possible and with the separating plate a surface for supporting the carrier that is independent of the state of the circular comb shaft is achieved.
  • the nature of the surface on which the pair of spring ribs rests is determined by the design and choice of material for the separating plate.
  • the shape of the spring plate is adapted to the crested shaft, with the spring plate enclosing the crested shaft by more than 180 degrees when inserted, which means that the spring plate is held on the crested shaft without additional fastening elements. This makes it possible to retrofit older combers with the latest generation of circular combs without having to carry out a costly refurbishment of the circular comb shafts.
  • the spring plate preferably has at least four attachment points and is clamped to the spring ribs at the attachment points with bent tabs.
  • Tabs are formed in the spring plate by an arrangement of slots.
  • the tabs can be bent independently of the shape of the spring plate. This makes it possible to clamp the spring ribs of the carrier between the spring plate and the tabs attached to the spring plate at the points of the tabs.
  • the spring plate is placed against the support surfaces of the spring ribs on a side facing the circular comb shaft and the tabs are bent in such a way that they come to rest on a side of the support surfaces facing away from the circular comb shaft. In this way, the spring plate is held in a predetermined position on the carrier so that it cannot be lost, even when the carrier is replaced.
  • the position of the spring plate on the carrier is determined by the recesses provided in the spring plate for the fastening elements of the carrier on the comb shaft. Due to this attachment of the spring plate to the carrier, it is not necessary for the spring plate to enclose the comb shaft with more than 180 degrees of angle. It is sufficient if the spring plate protrudes beyond the support surfaces of the spring ribs.
  • the spring plate is made of hardened steel.
  • the spring plate is preferably made of a corrosion-resistant steel, for example chrome steel.
  • a version made of brass has also proven itself as an alternative. Although brass has a higher ductility, it is characterized by good sliding properties.
  • a combing device is proposed with a circular comb, the circular comb having a counterweight and a carrier with a clothing support surface on which a comb clothing is attached, and the carrier with the counterweight are mutually arranged on a circular comb shaft and braced together with fastening screws through the circular comb shaft.
  • the carrier has at least one support surface, which is opposite the clothing support surface and is designed as at least one pair of spring ribs, for supporting the carrier on the circular comb shaft.
  • a wear protection element designed according to one of the preceding claims is assigned to the support surface.
  • the anti-wear element designed as a spring plate is preferably clipped onto the circular comb shaft.
  • the spring plate is designed as a sleeve which, after clipping on, encloses the comb shaft by more than 180 degrees. Due to the spring effect of the spring plate, the wear protection element in the form of the spring plate is held on the circular comb shaft, as a result of which simple assembly of the carrier of the circular comb is possible.
  • the spring plate extends over the entire length of the circular comb, recesses being provided in the spring plate at least for the fastening screws of the carrier.
  • the recesses are designed in such a way that passage of the fastening elements for the carrier is not prevented.
  • the counterweight is held non-rotatably on the circular comb shaft with fastening elements, independently of the carrier. This makes it possible to replace the carrier or the wear protection element without also having to remove the counterweight from the circular comb shaft.
  • a combing machine with at least one combing device according to the above description is also proposed.
  • figure 1 shows a schematic side view of a combing head 1 of a combing machine according to the prior art.
  • combers z. B. eight such combing heads 1 arranged side by side.
  • the combing head 1 of which only some of the elements are shown, has a nipper unit which is mounted in a frame of the combing machine so that it can be swiveled back and forth about a nipper shaft 5 and a circular comb axis 6 via swivel arms 3 and 4.
  • the tong shaft 5 is driven by a drive, not shown in detail, in order to give the tong unit a reciprocating movement.
  • a circular comb shaft 8 Arranged in the circular comb axis 6 is a circular comb shaft 8 on which a circular comb 7 is fastened in a rotationally fixed manner.
  • the Round comb shaft 8 with its round comb axis 6 is also driven discontinuously by a drive, not shown, in the direction of rotation 23 .
  • the circular comb 7 fastened to the circular comb shaft 8 below the gripper unit consists of a base body 10 and a counterweight 11 is fastened. As shown schematically, the counterweight 11 is attached by means of the screws 12, by means of which the counterweight 11 is attached to the circular comb shaft 8.
  • the base body 10 is braced by the circular comb shaft 8 with the counterweight 11 via fastening screws 9 and is thereby firmly connected to the circular comb shaft 8 .
  • the tong unit is formed from a tong frame 14 to which a lower tong plate 15 and an upper tong plate 16 is attached.
  • the nipper unit is closed, with the fiber tuft 17 protruding from the clamping point of the nipper unit being seized and combed out by the combing set 13 .
  • the combing out is essentially determined by the distance 24 between the lower gripper plate 15 and an enveloping circle 2 of the combing clothing 13 .
  • a feed roller 18 is rotatably mounted above the lower tong plate 15, which z. B. is driven step by step by a ratchet drive, not shown.
  • a batting 19 (or individual slivers) fed to the combing device 1 is fed to the clamping point of the gripper unit via this feed roller 18 .
  • the gripper unit is pivoted in the direction of a subsequent pair of detaching rollers 20 .
  • the gripper unit opens and the combed-out end of the wadding 19 or the fiber tuft 17 is placed on the end of a previously formed fiber fleece 21 and soldered to it under the action of the clamping point of the detaching rollers 20 and transported away in the conveying direction 22.
  • the circular comb shaft 8 and thus also the carrier 10 are accelerated in the direction of rotation 23 and in turn braked.
  • figure 2 shows a schematic representation of a first embodiment of a carrier 25 according to the invention in cross section.
  • the carrier 25 is shown as a profile with a clothing support surface 26 which is placed on a comb shaft 8 with a spring rib pair 28 .
  • the pair of spring ribs 28 is placed with the respective support surfaces 27 on a surface of the circular comb shaft 8 arranged in the circular comb axis 6 .
  • figure 3 shows a schematic representation of a further embodiment of a carrier 25 according to the invention in cross section. In contrast to the execution after figure 2 an additional second pair of spring ribs 29 is shown.
  • figure 4 shows a schematic representation of a first and figure 5 a second embodiment of an anti-wear element.
  • the end of a rib of the pair of spring ribs 28 is shown with the support surface 27 for resting on the comb shaft 8 .
  • a coating 31 is provided between the support surface 27 and the circular comb shaft 8 in the first embodiment and a rubber element 30 in the second embodiment.
  • the rubber element is placed around the spring rib and advantageously glued to it.
  • FIG 6 shows a schematic representation of a third embodiment of an anti-wear element.
  • the wear protection element is designed in the form of a spring plate 32 .
  • the crested shaft 8 is indicated in order to show that the spring plate 32 is simply clipped onto the crested shaft 8 .
  • the spring plate 32 is designed with a correspondingly small plate thickness. Recesses 35 are provided in the spring plate 32 at the locations of the fastening elements for the carrier of the circular comb. For the installed condition of the spring plate 32, see Figures 7 and 8 .
  • figure 7 shows a schematic representation of a combing device with a wear protection element in a longitudinal section and figure 8 a schematic representation of the combing device in a view X after figure 7 .
  • the combing device comprises a circular comb and a counterweight 11, the circular comb being essentially formed by a carrier 25 and a combing set (not shown) attached thereto.
  • the carrier 25 has a clothing support surface 26 .
  • the counterweight 11 is fastened to the comb shaft 8 with fastening elements 34 .
  • the carrier 25 with the counterweight 11 is clamped through the circular comb shaft 8 on the circular comb shaft 8 by means of fastening elements 33 passing through.
  • the ribs of the pair of spring ribs 28 have support surfaces 27 at their ends.
  • a wear protection element in the form of a spring plate 32 is provided between a surface 36 of the circular comb shaft 8 and the support surfaces 27 of the pair of spring ribs 28 .
  • the gap 37 can be a tightening or loosening of the fastening elements 33 can be increased or decreased.
  • FIG 9 shows a schematic representation of a third embodiment of a carrier 25 according to the invention in cross section.
  • the carrier 25 is shown as a profile with a clothing support surface 26 which is placed on a comb shaft 8 with a spring rib pair 28 .
  • the pair of spring ribs 28 is placed with the respective support surfaces 27 on a surface of the circular comb shaft 8 arranged in the circular comb axis 6 .
  • a wear protection element in the form of a spring plate 32 is arranged between the supporting surfaces 27 of the pair of spring ribs 28 .
  • the spring plate 32 is formed with tabs 38 (see also Figures 10 and 10a ).
  • This Tabs 38 can be bent up in relation to the rest of the spring plate 32, so that when installed they come to rest on a side of the spring plate 32 facing away from the circular comb shaft 8 and the spring plate 32 is thus clamped in the spring ribs 28 and thus fastened to the carrier 25.
  • Figure 10a and 10b show a schematic representation of a fourth and fifth embodiment of an anti-wear element.
  • the wear protection elements are designed as spring plates 32 .
  • Tabs 38 are provided in each spring plate 32, only one tab is shown in the illustration, but at least 4 tabs 38 are to be provided in a spring plate 32, with the tabs 38 being arranged symmetrically, for example. However, a symmetrical arrangement of the tabs 38 is not absolutely necessary.
  • the lugs 38 can also be made smaller than shown in relation to the spring plate 32 and can therefore be provided in larger numbers.
  • the spring plate 32 is designed with a correspondingly small plate thickness. Recesses 35 are provided in the spring plate 32 at the locations of the fastening elements for the carrier of the circular comb. For the installed condition of the spring plate 32, see figure 9 .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP22164473.5A 2021-11-23 2022-03-25 Support pour un peigne rond d'une machine à peigner Pending EP4183908A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH070592/2021A CH719163A1 (de) 2021-11-23 2021-11-23 Träger für einen Rundkamm einer Kämmmaschine.

Publications (1)

Publication Number Publication Date
EP4183908A1 true EP4183908A1 (fr) 2023-05-24

Family

ID=86047761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22164473.5A Pending EP4183908A1 (fr) 2021-11-23 2022-03-25 Support pour un peigne rond d'une machine à peigner

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EP (1) EP4183908A1 (fr)
CH (1) CH719163A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29720656U1 (de) * 1997-11-21 1998-01-22 Staedtler & Uhl, 91126 Schwabach Distanzelement für einen Kreiskamm einer textilen Kämm-Maschine
EP2426239A1 (fr) 2010-09-04 2012-03-07 Maschinenfabrik Rieter AG Peigne rond d'une peigneuse
EP2883985A1 (fr) * 2013-12-12 2015-06-17 Kabushiki Kaisha Toyota Jidoshokki Cylindre de peignage pour peigneuse
EP3034660A1 (fr) * 2014-12-19 2016-06-22 Maschinenfabrik Rieter Ag Peigne rond dote d'element de guidage
EP3633084A1 (fr) 2018-10-04 2020-04-08 Graf + Cie AG Peigne circulaire pour une peigneuse
CH715429A1 (de) * 2018-10-04 2020-04-15 Graf Cie Ag Rundkammträger für eine Kämmmaschine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10252098A1 (de) * 2002-11-08 2004-05-27 Staedtler + Uhl Kg Fixkamm und Fixkammhalter für eine textile Kämm-Maschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29720656U1 (de) * 1997-11-21 1998-01-22 Staedtler & Uhl, 91126 Schwabach Distanzelement für einen Kreiskamm einer textilen Kämm-Maschine
EP2426239A1 (fr) 2010-09-04 2012-03-07 Maschinenfabrik Rieter AG Peigne rond d'une peigneuse
EP2883985A1 (fr) * 2013-12-12 2015-06-17 Kabushiki Kaisha Toyota Jidoshokki Cylindre de peignage pour peigneuse
EP3034660A1 (fr) * 2014-12-19 2016-06-22 Maschinenfabrik Rieter Ag Peigne rond dote d'element de guidage
EP3633084A1 (fr) 2018-10-04 2020-04-08 Graf + Cie AG Peigne circulaire pour une peigneuse
CH715429A1 (de) * 2018-10-04 2020-04-15 Graf Cie Ag Rundkammträger für eine Kämmmaschine

Also Published As

Publication number Publication date
CH719163A1 (de) 2023-05-31

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