US20200340150A1 - Carrying device for an apron drafting system - Google Patents

Carrying device for an apron drafting system Download PDF

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Publication number
US20200340150A1
US20200340150A1 US16/856,986 US202016856986A US2020340150A1 US 20200340150 A1 US20200340150 A1 US 20200340150A1 US 202016856986 A US202016856986 A US 202016856986A US 2020340150 A1 US2020340150 A1 US 2020340150A1
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US
United States
Prior art keywords
apron
carrying device
support
bearing
bridge
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
US16/856,986
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English (en)
Inventor
Jochen Dressen
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.)
Saurer Intelligent Technology AG
Original Assignee
Saurer Intelligent Technology 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 Saurer Intelligent Technology AG filed Critical Saurer Intelligent Technology AG
Assigned to Saurer Intelligent Technology AG reassignment Saurer Intelligent Technology AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DRESSEN, JOCHEN
Publication of US20200340150A1 publication Critical patent/US20200340150A1/en
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/56—Supports for drafting elements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/34—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using air-jet streams
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
    • D01H5/88—Cradles; Tensors

Definitions

  • the present invention relates to a carrying device for an apron drafting system of a spinning machine, with a first and a second support, each of which is configured for detachably accommodating an apron bridge and/or for rotatably bearing a drawing roller.
  • Drafting systems of various embodiments for spinning machines are known from the prior art. They are used to draft or draw a fiber band, in which case the cross-section of the fiber is reduced. During the drawing, the fibers must be transported next to each other as uniformly as possible so that a uniform fiber band is achieved, which is a prerequisite for producing a uniform yarn.
  • the drafting systems In order to draft the fiber band, the drafting systems generally have a plurality of roller pairs arranged one after the other, which roller pairs, arranged lying on each other, clamp the fiber band running between them.
  • a roller pair usually consists of a driven bottom roller and a top pressure roller lying on the bottom roller. Drawing of the fiber band is achieved in that the circumferential speed increases from roller pair to roller pair in the transporting direction of the fiber band defined by the direction of rotation of the roller pairs.
  • the individual driven rollers are each arranged on a carrying device, in particular a drafting system carriage, are arranged one behind the other in the transporting direction of the fiber band and form a drafting system bottom section of a drafting system. Since the fibers of the fiber bundle lose their cohesion in the main drawing zone where the fiber band is drawn with high drawing values, drafting systems implemented as apron drafting systems have already been disclosed, in which the fiber band is passed through aprons between the clamping lines of the drawing roller pairs.
  • double apron drafting systems are particularly widespread in this context, in which one apron each is guided around a first top and bottom roller in the area of the main drawing zone and is deflected by a deflecting device from the fiber guidance direction towards the second roller pair into the return direction, so that the fiber band is guided between the top and bottom apron.
  • the aprons which are configured as an endless band, as has been disclosed, for example, in European Patent Publication EP 2 034 060 A1, are guided at least around the drivable bottom roller, a deflecting device and a tensioning apparatus which keeps the bottom aprons at the pretension required for operation.
  • the bottom apron can be driven via the drivable bottom roller, in which case the transmission of the drive torque from the roller to the apron is usually ensured by a frictional connection with a top apron or a top roller.
  • An essential factor in the yarn quality is the fiber guidance of the fiber band or the drawing quality, in which case a uniformly spun yarn is achieved by uniform drawing of the fiber band. Since the bottom apron has to be pressed against a top apron or top roller, if there is one, for drafting a fiber band, in the area of the main drawing zone, wear occurs on the surfaces in contact with the fiber bands as a result of friction. As wear progresses, the quality of the spun yarn is increasingly negatively influenced, which leads to considerable disadvantages, in particular in the case of high-drawing drafting systems, meaning that the aprons have to be replaced often.
  • the problem addressed by the present invention is that of providing a carrying device for an apron drafting system as well as an apron drafting system of a spinning machine, which enable an apron to be changed quickly.
  • the first support has a base element and a guide section that can be detachably connected to the base element.
  • the guide section has a bearing opening for rotatably bearing the drawing roller as well as a first mounting opening for accommodating a first bearing section of the apron bridge.
  • the carrying device has two supports which can be arranged at a distance from one another and which can ideally be arranged on a base carrier of the carrying device. While the second support is configured for detachably accommodating the apron bridge and/or for rotatably bearing the drawing roller, there is provision for the first support to be configured in at least two parts and to have a base element, which can be connected in particular to the base carrier, and a guide section that can be detachably connected to the base element.
  • This guide section has a bearing opening for rotatably bearing the drawing roller as well as a mounting opening for accommodating a first bearing section of the apron bridge.
  • This guide section has a bearing opening for rotatably bearing the drawing roller, within which bearing opening, for example, a bearing of the drawing roller can be detachably accommodated. Furthermore, the guide section also has a first mounting opening, which is suitable for the arrangement of a first bearing section of the apron bridge, via which the apron bridge is thus supported on the first support.
  • the separability of the guide section from the base element makes it possible to easily change an apron circulating around the drawing roller and apron bridge if necessary.
  • the drawing roller and the apron bridge are freely accessible on one side, with the effect that the apron to be replaced can be easily pulled off via the then free ends of the apron bridge and drawing roller.
  • a new apron can subsequently be arranged and tensioned again on the apron bridge and the drawing roller without any problems.
  • the guide section is mounted on the base element, in which case in the operating position then present, the first bearing section of the apron bridge is again arranged in the first mounting opening and the drawing roller is again rotatably arranged in the bearing opening.
  • the carrying device enables particularly easy and quick replacement of the apron on the drafting system carriage, since easy access to the apron is provided by simple removability of the guide section. Compared to the apron drafting systems known from the prior art, this allows a spinning position of a textile machine assigned to the respective drafting system to be put back into operation more quickly.
  • connection between the guide section and the base element is basically freely selectable, with the connection being executed in such a way that, on the one hand, the position of the apron bridge and drawing roller is reliably secured in the operating position, while on the other hand also providing an easy and quick possibility for removal.
  • the guide section to be detachably connected to the base element via a linear guide in the operating position, in particular a dovetail guide, aligned in the longitudinal axis direction of the drawing roller and apron bridge.
  • a linear guide for the arrangement of the guide section on the base element ensures, in the operating position, a particularly reliable arrangement of the drawing roller and apron bridge on the first support.
  • the positive locking in the operating position via the linear guide, in particular the dovetail guide transverse to the longitudinal axis of the drawing roller and apron bridge, represents a particularly reliable way to prevent any shifting of the guide section in relation to the base element and thus ensures a reliable rotating bearing of the drawing roller and a stationary arrangement of the apron bridge.
  • the linear guide offers a guided adjustment of the guide section in relation to the base element in the longitudinal axis direction of the apron bridge and drawing roller, so that tilting is reliably avoided both during removal and mounting of the guide section on the base section.
  • a stationary arrangement of the drawing roller and apron bridge in the operating position is advantageous, for which it is conceivable for there to be a positionally stable arrangement of the guide section on the base element in the operating position.
  • This can basically be established in any way.
  • a securing element is provided, in particular a securing screw, for locking the guide section to the base element in the operating position.
  • Any securing elements can be used to secure the position of the guide section on the base element, including spring-loaded detent elements or clamping brackets, which fix the guide section in the operating position on the base element.
  • a securing screw which extends, for example, through a section of the guide section into the base element and can be screwed into the base element, enables the guide section to be secured in position on the base element in a particularly reliable way.
  • the use of a securing screw is characterized by its small space requirement and low costs.
  • the arrangement of the second bearing section of the apron bridge opposite the first bearing section of the apron bridge on the second support is basically freely selectable.
  • the apron bridge can be screwed together with the support in a straightforward embodiment so as to reliably ensure a stationary arrangement of the apron bridge on the second support.
  • the second support for detachably accommodating the second bearing section of the apron bridge to comprise a second mounting opening with an entry slope running obliquely to an accommodating shaft, the accommodating shaft being configured in the operating position of the apron bridge by a shaft connecting the first and second mounting opening, and a first detenting means spaced apart from the entry slope and delimiting the second mounting opening, which in the operating position can be brought into engagement with a complementary second detenting means on the second bearing section, in which case the second bearing section of the apron bridge is adjustable in the second mounting opening between the operating position and a release position in which the first detenting means and the second detenting means are disengaged.
  • the apron bridge is initially arranged on the carrying device by means of an arrangement of the second bearing section on the second support.
  • the apron bridge which is aligned obliquely to the accommodating shaft extending, in the operating position of the carrying device, parallel to a longitudinal axis of the apron bridge and/or the drawing roller, is pushed with the second bearing section along the entry slope running obliquely to the accommodating shaft into the second mounting opening of the second support.
  • the apron bridge is subsequently pivoted into a position in which the apron bridge is aligned parallel to the drawing roller.
  • the apron bridge with a section of the second bearing section preferably rests on a shoulder of the second support.
  • the first detenting means which is ideally configured as a detent body projecting in the direction of the entry slope, is in engagement with the second detenting means, which is ideally configured as a detent recess, on the second bearing section, in which case there is then a shifting lock in relation to the second support in the longitudinal axis direction of the apron bridge or in the direction of the accommodating shaft.
  • the guide section can then easily be pushed onto the first bearing section and the free end of the drawing roller in the direction of the accommodating shaft or in the longitudinal axis direction of the apron bridge and drawing roller, for example configured with a linear guide provided in an advantageous embodiment.
  • the embodiment allows easy and reliable arrangement and, if necessary, replacement of the apron bridge on the second support.
  • the positive locking which is configured in a preferable manner via the detent body and the detent recess, also prevents the apron bridge from escaping from its position corresponding to the operating position when the guide section is removed from the base element.
  • This embodiment of the present invention thus facilitates an apron change in a supplementary manner.
  • the embodiment of the first and second detenting means is basically freely selectable.
  • the second detenting means to be configured as a slot and/or for the first detenting means to be configured as a detent pin aligned perpendicular to the longitudinal axis of the drawing roller.
  • the use of a detenting means configured as a slot allows adjustment of the apron bridge on the second support, so that an optimal alignment of the apron bridge is possible.
  • the detent pin is characterized by its particularly straightforward embodiment and high functional reliability.
  • the detent pin can be provided with the apron bridge and the slot can be provided with the second support.
  • the arrangement of the drawing roller with its end opposite the first support can basically be undertaken in any way, for example also on the second support.
  • the carrying device is configured for carrying a drive unit, in which case the drawing roller can be borne in a stationary manner on the drive unit with its end opposite the first support.
  • the direct bearing possibility of the drawing roller on the drive unit which can be arranged on the carrying device, in particular on the base carrier, ensures that the position of the drawing roller on the carrying device can be reliably secured, even in the removed position of the guide section.
  • the direct bearing of the drawing roller on the drive unit means that there is no need for a separate bearing on a support opposite the first support.
  • the second support can be configured as one piece with the housing of the drive unit, resulting in a particularly compact embodiment.
  • the carrying device can be formed into an at least partially assembled unit according to one of the preferable embodiments described above.
  • the first and/or second support can be arranged on the base carrier at a distance from one another and/or connected to the base carrier at a distance from one another.
  • the base element of the first support can be connected to the base carrier.
  • the guide section can also be detachably connected to the base element. The same can apply in a corresponding manner to the linear guide, for example configured as a dovetail guide, the drawing roller which can be borne on the drive unit, the apron bridge which can be borne so as to be longitudinally displaceable along the accommodating shaft, and the first and second detenting means which can be brought into engagement.
  • an apron drafting system for a spinning machine, in particular an air spinning machine, with a carrying device having a bottom apron guided by a drivable bottom roller, which bottom apron is supported in the area of a main drawing zone by a sliding section of an apron bridge, is characterized in that the carrying device is configured according to one or more of the above embodiments, in particular in that the first support has a base element connected to the base carrier and a guide section detachably connected to the base element and having a bearing opening for rotatably bearing the drawing roller as well as a first mounting opening for accommodating a first bearing section of the apron bridge.
  • a correspondingly configured apron drafting system is characterized in that it enables particularly easy and quick changing of a worn apron, in which case, after access to the carrying device has been provided, it is only necessary to remove the guide section from the base element, thus enabling the possibility of pulling off the apron to be replaced via the then free ends of the drawing roller and apron bridge in the course of pivoting the free end of the apron bridge in the direction of the drawing roller to release the apron tension. After that, the new apron can then be easily arranged and tensioned again on the drawing roller and the apron bridge. After that, by attaching the guide section to the base element, the alignment and apron tension required for operation are established.
  • FIG. 1 shows a perspective view of a drafting system carriage with a drawing roller and an apron bridge in the operating position
  • FIG. 2 shows a perspective view of the drafting system carriage from FIG. 1 in the removed state of the first support and a push-in position of the apron bridge;
  • FIG. 3 shows a perspective view of the drafting system carriage from FIG. 1 in a partially pivoted state of the apron bridge;
  • FIG. 4 shows a perspective view of the drafting system carriage from FIG. 1 in an operating position of the apron bridge and drawing roller;
  • FIG. 5 shows a perspective view of an apron drafting system with a drafting system carriage according to FIG. 1 ;
  • FIG. 6 shows a perspective view of a drafting system bottom section of the apron drafting system from FIG. 5 .
  • FIG. 5 depicts a perspective representation of an apron drafting system 1 of a spinning position (not depicted here) of a textile machine, which apron drafting system 1 can be fixed to the textile machine using detent hooks 21 .
  • the apron drafting system 1 has a drafting system top section 19 , which is articulated on a drafting system bottom section 2 , in which case pivoting is effected by actuating a handle 20 .
  • the drafting system top section 19 with four top rollers arranged one behind the other in the running direction of a fiber band (not depicted here) through the apron drafting system 1 lie on the corresponding, driven bottom rollers 3 , 4 , 5 , 6 of the drafting system bottom section 2 .
  • the bottom rollers 3 , 4 , 5 , 6 include the infeed roller 3 , which is the first to come into contact with the fiber band, is driven by a roller drive 7 and forms the first bottom roller of the drafting system bottom section 2 .
  • the infeed roller 3 is arranged together with the roller drive 7 on a carrying device 8 a configured as a drafting system carriage, which—like the carrying devices 8 b , 8 c , 8 d explained below, which are each configured as a drafting system carriage—is configured for connection to a frame 16 of the drafting system bottom section 2 (see FIG. 2 ).
  • the drafting system carriage 8 a is followed in the direction of travel of the fiber band by the drafting system carriage 8 b , on which is arranged a first drawing roller 4 with a roller drive 7 driving the drawing roller 4 .
  • the drafting system carriage 8 b is in turn followed by the drafting system carriage 8 c —viewed in the direction of travel of the fiber band—which has a second drawing roller 5 as well as a roller drive 7 driving the drawing roller 5 .
  • the drafting system carriage 8 c In contrast to the drafting system carriage 8 b , the drafting system carriage 8 c also has an apron bridge 9 , which is held with its opposite bearing sections 27 , 28 on a first and a second support 11 a , 11 b , which are connected to a base carrier 17 of the drafting system carriage 8 c.
  • a bottom apron 10 runs on the drafting system carriage 8 c around the apron bridge 9 as well as the second drawing roller 5 and ensures that a fiber band does not come into direct contact with the second drawing roller 5 .
  • the drafting system carriage 8 c is ultimately followed in the transporting direction of the fiber band by the drafting system carriage 8 d , which has an outfeed roller 6 driven by a roller drive 7 , by means of which outfeed roller 6 the drafted fiber band leaves the apron drafting system 1 .
  • the first support 11 a of the drafting system carriage 8 c has a base element 12 connected to the base carrier 17 and a guide section 13 which can be detachably arranged on the base element 12 .
  • the guide section 13 is depicted in its mounted position, the guide section 13 being arranged on a guide element 25 of the base element 12 via an opening not depicted here.
  • a screw 23 is used, which can be screwed through an opening 24 in the guide section 13 into the guide element 25 on the base element 12 .
  • the first bearing section 27 of the apron bridge 9 is located in a first mounting opening 15 , which is a through hole, on the guide section 13 . Furthermore, a drawing roller bearing 22 arranged on the end of the drawing roller 5 opposite the roller drive 7 is located in the bearing opening 14 provided for this purpose on the guide section 13 .
  • the apron bridge 9 is replaced.
  • the apron bridge 9 is shifted by pivoting it into the position depicted in FIG. 2 .
  • the pivoting capability of the apron bridge 9 on the second support part 11 b results from the embodiment of the second mounting opening 29 for the second bearing section 28 of the apron bridge 9 .
  • the second mounting opening 29 has an entry slope which allows the apron bridge 9 to be pulled out of the second mounting opening 29 in the removal position of the apron bridge 9 depicted in FIG. 2 .
  • a new apron bridge 9 can subsequently be arranged again on the drafting system carriage 8 c in reverse order, in which case the apron bridge 9 with the second bearing section 28 is pushed into the second mounting opening 29 in the position aligned in FIG. 2 along the entry slope.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US16/856,986 2019-04-26 2020-04-23 Carrying device for an apron drafting system Abandoned US20200340150A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019110880.2 2019-04-26
DE102019110880.2A DE102019110880A1 (de) 2019-04-26 2019-04-26 Trageinrichtung für ein Riemchenstreckwerk

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US20200340150A1 true US20200340150A1 (en) 2020-10-29

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ID=70475956

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/856,986 Abandoned US20200340150A1 (en) 2019-04-26 2020-04-23 Carrying device for an apron drafting system

Country Status (8)

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US (1) US20200340150A1 (ja)
EP (1) EP3730682B1 (ja)
JP (1) JP2020183606A (ja)
CN (1) CN111850751B (ja)
BR (1) BR102020008153A2 (ja)
DE (1) DE102019110880A1 (ja)
MX (1) MX2020004274A (ja)
PT (1) PT3730682T (ja)

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CN114293291A (zh) * 2021-12-31 2022-04-08 安徽兰翔智能制造有限公司 一种便于更换的纺织胶圈组件

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CN112410952A (zh) * 2020-11-11 2021-02-26 苏州基列德智能制造有限公司 一种基于高压空气的纱线纺织设备及其方法
LU503151B1 (de) * 2022-12-07 2024-06-07 Saurer Spinning Solutions Gmbh & Co Kg Spannvorrichtung und Spinnmaschine
LU503225B1 (de) * 2022-12-20 2024-06-20 Saurer Spinning Solutions Gmbh & Co Kg Vorrichtung zum Positionieren einer Walze oder für das Spannen eines Riemens, Streckvorrichtung, Spinneinheit und Spinnmaschine umfassend eine solche Vorrichtung
DE102023103421A1 (de) * 2023-02-13 2024-08-14 Trützschler Group SE Integriertes Streckwerk

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Publication number Publication date
PT3730682T (pt) 2023-01-10
MX2020004274A (es) 2020-11-06
JP2020183606A (ja) 2020-11-12
EP3730682B1 (de) 2022-11-02
BR102020008153A2 (pt) 2021-03-09
CN111850751B (zh) 2022-06-21
CN111850751A (zh) 2020-10-30
EP3730682A1 (de) 2020-10-28
DE102019110880A1 (de) 2020-10-29

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