EP3633085A1 - Peigne circulaire pour une peigneuse - Google Patents

Peigne circulaire pour une peigneuse Download PDF

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Publication number
EP3633085A1
EP3633085A1 EP19200122.0A EP19200122A EP3633085A1 EP 3633085 A1 EP3633085 A1 EP 3633085A1 EP 19200122 A EP19200122 A EP 19200122A EP 3633085 A1 EP3633085 A1 EP 3633085A1
Authority
EP
European Patent Office
Prior art keywords
carrier
comb
clothing
circular comb
circular
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.)
Granted
Application number
EP19200122.0A
Other languages
German (de)
English (en)
Other versions
EP3633085B1 (fr
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 EP3633085A1 publication Critical patent/EP3633085A1/fr
Application granted granted Critical
Publication of EP3633085B1 publication Critical patent/EP3633085B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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

Definitions

  • the present invention relates to a round comb for a combing machine and a combing head with such a round comb.
  • Circular combs of this type are used for combers for combing out a fiber mass (cotton, wool, etc.), it being possible for the fiber mass to be supplied in the form of cotton webs wound on sleeves or in the form of individual fiber tapes.
  • the comb play numbers (comb play / minute) have increased significantly in recent years, which also means an increase in productivity.
  • the round combs used in practice for the combing machine consist of a round comb carrier which is provided with a clamping hub with which it is fixed in a rotationally fixed manner on a driven round comb shaft.
  • a clothing carrier is fastened, which receives the combing clothing, which combs out the end of the fiber mass (also called fiber beard) presented by a pair of pliers.
  • circular comb carriers are used, which are held directly on a driven circular comb shaft.
  • the EP 0 514 319 A1 discloses various designs of a circular comb with spacer elements.
  • a spacer element according to the disclosure of EP 0 514 319 A1 Wedges are used, the wedges are secured by a stop screw against falling out in the axial direction.
  • a disadvantage of the disclosed embodiment is that the positioning of the wedges is complex by moving the wedges in the axial direction and must therefore be carried out when the circular comb is removed. When loosening the attachment of the circular comb segment, the previously set positioning of the wedges is lost again, since the wedges are freely movable in the axial direction on the roller body.
  • a round comb for a combing machine having a combing set and a round comb axis, with a set carrier and at least one round comb carrier.
  • the clothing carrier is held on the circular comb carrier.
  • At least two adjusting devices are provided between the clothing carrier and the circular comb carrier in a respective end region of the clothing carrier for adjusting a distance between the clothing carrier and the circular comb carrier. Due to the connection of the lower pliers plate of the pliers with the round comb shaft, when the distance between the round comb carrier and the clothing carrier is adjusted, the distance between the lower pliers plate of the pliers and the enveloping circle of the combing set also changes.
  • the clothing carrier has a clothing support surface on its side facing away from the round comb shaft.
  • a combing attachment is attached to the clothing support surface with suitable means, for example with screws, by welding or gluing.
  • Combing sets consisting of individual wire strips applied to the set bearing surface or also combing sets consisting of prefabricated combing elements which are applied to the set supporting surface are used.
  • the clothing contact surface is arranged in the form of a segment of a circle around the circular comb axis.
  • the circular comb carrier can be provided as a disk with a specific length, the length being visible in the direction of the circular comb axis.
  • the length of the round comb carrier corresponds to only a fraction of the length of the round comb, with several such short round comb carriers being used for fastening the combing set.
  • the use of several circular comb carriers for a combing set has the disadvantage that aligning the round comb carriers is complex in order to achieve a concentric arrangement of the combing set or the set carrier with the round comb shaft.
  • the length of the round comb carrier therefore advantageously corresponds to a length of the round comb. This has the additional advantage that the round comb with the combing set can be preassembled before it is installed in a comber.
  • the clothing carrier When viewed in the direction of the circular comb axis, the clothing carrier is advantageously fastened in its respective end region to the circular comb carrier with at least two releasable connecting elements. Screws have proven themselves as connecting elements. Due to the high demands on the connection of the clothing carrier with the round comb carrier due to the acceleration forces that occur, a screw connection of the clothing carrier with the round comb carrier has proven itself after an adjustment.
  • the adjustment can be used to easily adjust the distance between the lower pliers plate and the enveloping circle of the combing set located on the clothing carrier without the circular comb having to be removed from the combing head when changing the setting.
  • a setting can also be checked directly in the installed state by measuring the distance between the lower pliers plate and the enveloping circle of the combing set located on the set carrier.
  • the circular comb can be rotated into a measuring position in which the distance can be set and measured. After making the setting, it is secured by simply tightening the connecting elements to fasten the clothing carrier to the circular comb carrier.
  • the distance between the circular comb carrier and the clothing carrier can be adjusted in various known ways, for example with set screws or eccentric screws.
  • the adjusting device between the clothing carrier and the circular comb carrier comprises flat wedges which are arranged in an end region of the circular comb and which, starting from the respective end of the clothing carrier in the direction of the longitudinal axis of the circular comb shaft, have a continuous cross-sectional taper directed towards the clothing carrier or the circular comb carrier. This cross-sectional taper changes the distance between the clothing carrier and the circular comb when the flat wedges are moved in the direction of the circular comb axis.
  • the constant cross-sectional taper is provided by a bevel of a surface of the flat wedge facing the clothing carrier, the bevel having a wedge angle ⁇ of 6 degrees or less.
  • the respective connecting elements of the clothing carrier engage with the circular comb carrier through an opening provided in the respective flat wedge. This not only fixes the clothing carrier on the circular comb carrier, but at the same time securely clamps the flat wedge between the clothing carrier on the circular comb carrier at the location of the cross-sectional taper. Likewise, the implementation of the connecting element through the opening of the flat wedge prevents the flat wedge from slipping out of the side during an adjustment.
  • a contact surface of the flat wedges facing the circular comb carrier is formed on a bearing surface provided on the circular comb carrier.
  • the respective flat wedge is preferably provided with an adjusting screw engaging the clothing carrier in a cavity, the adjusting screw being arranged with its axis parallel to the circular comb axis.
  • the adjusting device can be arranged between the clothing carrier and the circular comb carrier without the clothing carrier itself being significantly weakened. This also has advantages in an aerodynamic behavior of the circular comb during its movement compared to an arrangement of the adjusting device outside the clothing carrier.
  • the axially parallel arrangement of the adjusting screw enables the flat wedges to be adjusted from the outside of the round comb. It is not necessary to remove the circular comb or parts of it for adjustment.
  • the adjusting screw is preferably rotatably held in its axial position in the clothing carrier and an internal thread is provided in the flat wedge, with an engagement of the adjusting screw in the internal thread in the flat wedge by turning the adjusting screw of the flat wedge in its position in relation to the clothing carrier in the direction of the circular comb axis. Since the adjusting screw does not change its axial position due to the axial fixation even when turning, the thread of the adjusting screw which is in engagement with the internal thread of the flat wedge axially displaces the flat wedge in accordance with the pitch of the thread in relation to the circular comb axis. Neither the clothing carrier nor the circular comb carrier change their axial position, which means that the clothing carrier and the circular comb carrier are driven apart or brought together radially by the displacement of the flat wedge.
  • a holding device for the adjusting screw is preferably provided for the rotatable mounting in the cavity of the clothing carrier. This enables the entire adjustment device to be arranged in the clothing carrier.
  • the holding device is particularly preferably a circlip.
  • a corresponding shape of the cavity and adjusting screw can also be provided in order to achieve an axial holding of the adjusting screw.
  • the insertion of a circlip is an easy to assemble and inexpensive construction to hold the adjusting screw in its axial position.
  • the opening in the flat wedge is advantageously designed as a slot which is open towards a side facing away from the end of the clothing carrier.
  • a slot which is open towards a side facing away from the end of the clothing carrier.
  • the distance between the clothing carrier and the circular comb carrier is advantageously 0 mm to 1.5 mm. It has been shown that an adjustment of the distance in this area is possible by using flat wedges and is also sufficient for the necessary adjustment of the distance between the lower pliers plate of the pliers and the enveloping circle of the combing set for the fiber material to be processed in a combing shop.
  • the direction of rotation of the round comb results in an inlet side with which the combing set first meets the fiber beard to be combed.
  • the circular comb moves due to its rotation through the fiber beard until it leaves it again on the outlet side of the combing set.
  • the combing set with its enveloping circle is arranged concentrically to the round comb shaft.
  • the distance between the clothing carrier and the circular comb carrier on an inlet side of the combing set differs from the distance between the clothing carrier and the circular comb carrier on an outlet side the combing set differs by 0.1 mm to 1.5 mm. Due to the possibility to set the distance on the inlet side and the outlet side differently, the combing processes can be optimally matched to the requirements of the fiber to be combed.
  • the counterweight is held in a rotationally fixed manner on the circular comb shaft with fastening elements, independently of the circular comb carrier. This enables the round comb carrier to be replaced without having to remove the counterweight from the round comb shaft. This is particularly advantageous if pre-assembled circular combs are used that are set for a specific combing process. Once set, kits which include the circular comb carrier, the clothing carrier, the adjustment devices and the combing clothing can be exchanged in a simple manner.
  • a comb head with a round comb and a counterweight or compensating element is also proposed, the round comb having a clothing carrier with a clothing support surface and at least one circular comb carrier and the circular comb carrier with the counterweight or compensating element being mutually arranged on a circular comb shaft and the clothing carrier being fastened to the circular comb carrier with connecting elements is, the circular comb is formed as described above.
  • Figure 1 shows a schematic side view of a combing head 1 of a combing machine according to the prior art.
  • combing heads 1 In known combing machines, for. B. eight such combing heads 1 arranged side by side.
  • the combing head 1, of which only a part of the elements is shown, has a pliers unit which is pivotably mounted back and forth in the frame of the combing machine via the swivel arms 3 and 4 around the pliers shaft 5 and the circular comb axis 6.
  • the pliers shaft 5 is driven by a drive (not shown in more detail) in order to give the pliers unit a back and forth movement.
  • the round comb shaft 8 In the round comb axis 6, the round comb shaft 8 is arranged on which a round comb 7 is fastened in a rotationally fixed manner.
  • the round comb shaft 8 with its round comb axis 6 is also driven continuously or discontinuously by a drive, not shown, in the direction of rotation 23.
  • the circular comb 7 fastened below the pliers unit on the round comb shaft 8 in the known solution shown consists of two round comb carriers 9 which are fixedly spaced apart from one another in the direction of the round comb axis 6 and on the outer circumference of which a clothing carrier 10 and on the other hand a counterweight 11 are fastened.
  • the counterweight 11 is fastened, as shown schematically, by means of the screws 12, by means of which the counterweight 11 is fastened to the round comb carriers 9.
  • the clothing carrier 10 is also firmly connected to the circular comb carriers 9 via schematically illustrated connecting elements 24.
  • a combing set 13 is attached above the clothing carrier 10, which, like the counterweight 11, extends over the entire length L (see Figure 4 ) of the circular comb 7, a combing set 13 is attached.
  • the circumferential angle of the combing set 13 is approximately 90 degrees in known combing machines and is also referred to as the "combing angle".
  • the pliers assembly is formed from a pliers frame 14 to which a lower pliers plate 15 and an upper pliers plate 16 are attached.
  • the pliers unit is closed, the one from the clamping point of the pliers aggregate protruding fiber beard 17 is gripped by the combing set 13 and combed out.
  • the combing is essentially determined by the distance C between the lower pliers plate 15 and an enveloping circle 2 of the combing set 13.
  • a feed roller 18 is rotatably mounted above the lower tong plate 15, which, for. B. is gradually driven by a ratchet drive, not shown.
  • a cotton wool 19 (or individual slivers) fed to the combing device 1 is fed to the clamping point of the pliers unit.
  • the pliers unit is pivoted in the direction of a subsequent tear-off roller pair 20.
  • the pliers unit opens and the combed end of the batting 19 or the fiber beard 17 is placed on the end of a previously formed nonwoven fabric 21 and soldered to it under the action of the clamping point of the tear-off rollers 20 and transported away in the conveying direction 22.
  • FIG. 2 shows a schematic representation of two embodiments of a circular comb according to the invention in a longitudinal section.
  • the circular comb is shown with a length L along a circular comb axis 6, the length L corresponding to the extension of a combing device normally used.
  • the circular comb axis 6 is also the longitudinal axis of the circular comb shaft 8 on which the circular comb is held in a rotationally fixed manner by a circular comb carrier 9 or 30.
  • the clothing carrier 10 has a clothing support surface 44 on a side facing away from the circular comb carrier 9 or 30.
  • the combing clothing is held in the form of individual clothing wires or combing elements (not shown) on the clothing support surface 44.
  • FIG. 1 An embodiment of the circular comb is shown, in which the circular comb has a circular comb carrier 9 and a clothing carrier 10.
  • the circular comb carrier 9 has a length M and is seen several times over the length L, namely at the two respective ends of the clothing carrier 10.
  • the circular comb carrier 9 in the embodiment shown is composed of two half-shells, which are fastened with clamping screws 25 on the circular comb shaft 8 are attached.
  • a spring key 45 is used for the rotationally fixed mounting of the round comb carrier 9 on the round comb shaft 8.
  • other anti-rotation devices such as dowel pins, are also conceivable.
  • the clothing carrier 10 is fastened to the respective circular comb carriers 9 with connecting elements 24.
  • An adjusting device 27 is inserted between the clothing carrier 10 and the circular comb carrier 9 in an end region 26 of the clothing carrier 10.
  • the adjusting device 27 is used to adjust the distance A between the clothing carrier 10 and the circular comb carrier 9.
  • a counterweight 11 is fastened to the circular comb carrier 9 with screws 12.
  • the counterweight 11 serves to achieve an almost unbalanced rotation of the round comb shaft 8 despite the combing set being present on one side. Accordingly, the counterweight 11 has a length corresponding to the clothing carrier 10.
  • the circular comb has a circular comb carrier 30 and a clothing carrier 10.
  • the circular comb carrier 30 has a length L and extends over the entire length L of the circular comb.
  • the circular comb carrier 30 is designed as a profile running over the length L, which is braced on the circular comb shaft 8 with fastening screws 31.
  • the fastening screws 31 are passed through the round comb shaft 8.
  • the clothing carrier 10 is fastened on the circular comb carrier 30 with connecting elements 24.
  • An adjusting device 27 is inserted between the clothing carrier 10 and the circular comb carrier 30 in an end region 26 of the clothing carrier 10.
  • the adjusting device 27 is used to adjust the distance A between the clothing carrier 10 and the circular comb carrier 30.
  • a compensating element 28 is fastened to the round comb shaft 8 with fastening elements 29.
  • the compensating element 28 serves to achieve an almost unbalanced rotation of the round comb shaft 8 despite the combing set being present on one side.
  • FIG 3 shows an enlarged schematic representation of an embodiment of an adjusting device 27 according to the invention Figure 2 .
  • the adjusting device 27 is inserted between the clothing carrier 10 and the circular comb carrier 9 and comprises a flat wedge 32 and an adjusting screw 38.
  • a contact surface 34 of the flat wedge 32 facing the circular comb carrier 9 comes to rest on a contact surface 35 of the circular comb carrier 9.
  • the contact surface 34 of the flat wedge 32 is adapted to the shape of the contact surface 35 of the circular comb carrier 9, so that the flat wedge 32 and the circular comb carrier 9 can be brought together without play.
  • the flat wedge 32 is L-shaped, a first leg being directed radially from the circular comb carrier 9 against the clothing carrier 10 and a second leg engaging in the direction of the circular comb axis 6 between the circular comb carrier 9 and the clothing carrier 10.
  • the second leg of the flat wedge 32 which grips between the circular comb carrier 9 and the clothing carrier 10, is provided with a bevel 36 on the side facing the clothing carrier 10, so that an effective cross section of the flat wedge 32 between the circular comb carrier 9 and the clothing carrier 10 starts from the end 33 of the Clothing carrier 10 tapers continuously in the direction of the circular comb axis 6.
  • a counter surface 37 of the clothing carrier 10 facing the flat wedge 32 is provided with an inclination corresponding to the cross-sectional taper of the flat wedge 32 with a wedge angle ⁇ .
  • an internal thread 39 is provided in the first leg of the flat wedge 32, which is arranged axially parallel to the circular comb axis 6 and into which an adjusting screw 38 engages, which is also inserted with its axis 42 parallel to the circular comb axis 6.
  • the adjusting screw 38 matures into a cavity 40 provided for this purpose in the clothing carrier 10.
  • a holding device 41 (for example a circlip) is provided for fixing the adjusting screw 38 in its axial position with respect to the clothing carrier 10 and thus also with respect to the circular comb carrier 9.
  • FIG 4 shows a schematic representation of the first embodiment of the circular comb in a view X according to the Figure 2 .
  • the circular comb essentially comprises a circular comb carrier 9, a clothing carrier 10 and a combing clothing (not shown) attached to it.
  • the circular comb carrier 9 is formed in two half-shells which are clamped to one another with clamping screws 25 on the circular comb shaft 8.
  • a spring key 45 is provided to secure a non-rotatable mounting of the round comb carrier 9 on the round comb shaft 8.
  • the clothing carrier 10 is fastened to the circular comb carrier 9 with connecting elements 24 and has a clothing supporting surface 44 on the side opposite the circular comb carrier 9.
  • the clothing support surface 44 is arranged concentrically to the round comb shaft 8 about a round comb axis 6.
  • a counterweight 11 is fastened to the circular comb carrier 9 with screws 12 on a side of the circular comb carrier 9 opposite the clothing carrier 10.
  • the adjustment devices are in the form of flat wedges 32 interact with adjustment screws 38 (see Figure 3 ) and serve to set a distance A between the circular comb carrier 9 and the clothing carrier 10 on an inlet side 46 of the circular comb or a distance B between the circular comb carrier 9 and the clothing carrier 10 on an outlet side 47 of the circular comb.
  • the inlet side 46 is the part of the combing set or the clothing carrier 10 which first meets the fiber beard to be combed in accordance with the direction of rotation 23, that is to say is at the front in the direction of rotation 23.
  • the combing process can be influenced by setting the distances A and B differently.
  • FIG. 5 shows a schematic representation of the second embodiment of the circular comb in a view Y according to the Figure 2 .
  • the circular comb essentially comprises a circular comb carrier 30, a clothing carrier 10 and a combing clothing (not shown) attached to it.
  • a compensating element 28 is arranged on a side of the circular comb carrier 30 opposite the clothing carrier 10 and is fastened to the round comb shaft 8 with fastening elements 29.
  • the round comb carrier 30 is clamped to the compensating element 28 by penetrating fastening screws 31 on the round comb shaft 8.
  • the clothing carrier 10 is fastened to the circular comb carrier 30 with connecting elements 24 and has a clothing support surface 44 on the side opposite the circular comb carrier 30.
  • the clothing support surface 44 is arranged concentrically to the round comb shaft 8 about a round comb axis 6.
  • the adjustment devices are designed in the form of flat wedges 32 which interact with adjustment screws 38 (see Figure 3 ) and serve to set a distance A between the circular comb carrier 9 and the clothing carrier 10 on an inlet side 46 of the circular comb or a distance B between the circular comb carrier 9 and the clothing carrier 10 on an outlet side 47 of the circular comb.
  • the inlet side 46 is the part of the combing set or the clothing carrier 10 which first meets the fiber beard to be combed in accordance with the direction of rotation 23, that is to say is at the front in the direction of rotation 23.
  • the combing process can be influenced by setting the distances A and B differently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP19200122.0A 2018-10-04 2019-09-27 Peigne circulaire pour une peigneuse Active EP3633085B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01214/18A CH715431A1 (de) 2018-10-04 2018-10-04 Rundkamm für eine Klämmmaschine.

Publications (2)

Publication Number Publication Date
EP3633085A1 true EP3633085A1 (fr) 2020-04-08
EP3633085B1 EP3633085B1 (fr) 2022-12-28

Family

ID=68084617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19200122.0A Active EP3633085B1 (fr) 2018-10-04 2019-09-27 Peigne circulaire pour une peigneuse

Country Status (5)

Country Link
EP (1) EP3633085B1 (fr)
CN (1) CN111005097B (fr)
AR (1) AR116686A1 (fr)
BR (1) BR102019019860A2 (fr)
CH (1) CH715431A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0514319A1 (fr) 1991-05-10 1992-11-19 Maschinenfabrik Rieter Ag Peigne circulaire pour une machine de peignage
DE29720656U1 (de) 1997-11-21 1998-01-22 Staedtler & Uhl, 91126 Schwabach Distanzelement für einen Kreiskamm einer textilen Kämm-Maschine
EP2789716A1 (fr) 2013-04-12 2014-10-15 Maschinenfabrik Rieter Ag Peigne rond d'une peigneuse
EP3467166A1 (fr) * 2017-09-18 2019-04-10 Trützschler GmbH & Co. KG Cylindre de peignage rond pour une machine de peignage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE389608C (de) * 1922-10-31 1924-02-08 Hermann Heinrich Kaemmtrommel fuer Kaemmaschinen
US1610407A (en) * 1923-08-06 1926-12-14 James K Lanning Half lap for combing textile fibers
GB948353A (en) * 1959-09-04 1964-01-29 Sant Andrea Novara Ohg E Fonde Improvements in or relating to rectilinear combing machines for combing long fibres
WO2008011733A1 (fr) * 2006-07-25 2008-01-31 Maschinenfabrik Rieter Ag Peigneuse
ITMI20081097A1 (it) * 2007-06-29 2008-12-30 Truetzschler Gmbh & Co Kg Apparecchiatura per la cernita di fibre o la selezione di fibre di un fascio di fibre comprendente fibre tessili, specialmente per la pettinatura
CN103934483B (zh) * 2013-01-21 2016-07-06 上海船用曲轴有限公司 一种用于加工曲拐内开档的刀具
CN206218913U (zh) * 2016-08-30 2017-06-06 重庆市铜梁区康腾电子科技有限公司 电路板传送机构
CN206902319U (zh) * 2017-06-07 2018-01-19 上海敦孚机电科技有限公司 顶梳支架装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0514319A1 (fr) 1991-05-10 1992-11-19 Maschinenfabrik Rieter Ag Peigne circulaire pour une machine de peignage
DE29720656U1 (de) 1997-11-21 1998-01-22 Staedtler & Uhl, 91126 Schwabach Distanzelement für einen Kreiskamm einer textilen Kämm-Maschine
EP2789716A1 (fr) 2013-04-12 2014-10-15 Maschinenfabrik Rieter Ag Peigne rond d'une peigneuse
EP3467166A1 (fr) * 2017-09-18 2019-04-10 Trützschler GmbH & Co. KG Cylindre de peignage rond pour une machine de peignage

Also Published As

Publication number Publication date
CN111005097B (zh) 2023-05-23
CN111005097A (zh) 2020-04-14
EP3633085B1 (fr) 2022-12-28
BR102019019860A2 (pt) 2020-07-07
AR116686A1 (es) 2021-06-02
CH715431A1 (de) 2020-04-15

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