EP2130956A1 - Riemchenkäfig für Spinnmaschinen - Google Patents

Riemchenkäfig für Spinnmaschinen Download PDF

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Publication number
EP2130956A1
EP2130956A1 EP09161642A EP09161642A EP2130956A1 EP 2130956 A1 EP2130956 A1 EP 2130956A1 EP 09161642 A EP09161642 A EP 09161642A EP 09161642 A EP09161642 A EP 09161642A EP 2130956 A1 EP2130956 A1 EP 2130956A1
Authority
EP
European Patent Office
Prior art keywords
apron
adjustors
tensor
aprons
shaft
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.)
Withdrawn
Application number
EP09161642A
Other languages
English (en)
French (fr)
Inventor
Akitoshi Sano
Yoshimasa Fujii
Isao Ono
Shinnosuke Kitamura
Atsushi Kinoshita
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.)
Kanpatsu Kogyo Co Ltd
Toyota Industries Corp
Original Assignee
Kanpatsu Kogyo Co Ltd
Toyota Industries Corp
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 Kanpatsu Kogyo Co Ltd, Toyota Industries Corp filed Critical Kanpatsu Kogyo Co Ltd
Publication of EP2130956A1 publication Critical patent/EP2130956A1/de
Withdrawn legal-status Critical Current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
    • D01H5/70—Constructional features of drafting elements
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
    • D01H5/88—Cradles; Tensors
    • 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

Definitions

  • the present invention relates to an apron cradle for spinning frames, and more particularly, to an apron cradle used in a double-spindle type apron draft device attached to a weighting arm.
  • a typical ring fine spinning frame includes an apron draft device arranged between a front roller and a back roller. Roving are held and drafted between a top apron and a bottom apron. Once assembled, the bottom apron is always held at the same predetermined position. However, the top apron is often arranged at a position spaced from the bottom apron when changing the spinning conditions or during maintenance. Furthermore, to facilitate maintenance, a draft device often employs a structure in which two top rollers, each including a top apron, is supported by a weighting arm in correspondence with two spindles. The top rollers may each be arranged at a draft position, in which the top rollers come into contact with the corresponding bottom rollers, and a standby position, in which the top rollers are spaced from the bottom rollers.
  • the open amount between the distal ends of the top and bottom aprons must be adjusted in accordance with the yarn number count or fiber type.
  • the interval between the apron cradle and tensor bar (hereafter referred to as tensor interval) must be adjusted.
  • tensor interval To adjust the tensor interval at the left and right sides, a distance clip is attached to the distal portion of an apron cradle. The distance clip is attached to the apron cradle in a state in which the pressure applied by the weighting arm is cancelled.
  • the distance clip is formed to correspond with one tensor interval.
  • plural types of distance clips for different spinning conditions must always be prepared and stored. This causes difficulties in the management of the distance clips and increases manufacturing costs.
  • Japanese Laid-Open Patent Publication No. 11-302930 proposes a distance clip that is applicable to a plurality of tensor intervals. When attaching the distance clip to the distal portion of an apron cradle, the positional relationship of the front and rear sides of the distance clip is varied so that the distance clip is applicable to two tensor intervals.
  • Japanese Laid-Open Patent Publication No. 3-113025 describes a method for adjusting apron nip pressure in a draft device.
  • an apron pressing member 52 is arranged on the distal portion of an apron tensioner 51.
  • Left and right adjustment screws 53 are inserted through the apron pressing member 52 and extended to the surface of a tensor bar 54.
  • the adjustment screws 53 vary the pressure produced between the apron pressing member 52 and the tensor bar 54.
  • the pressure applied by the weighting arm does not have to be cancelled when adjusting the tensor interval.
  • the problem with the distance clip does not occur.
  • the adjustment screws 53 adjust the tensor interval in a continuous and stepless manner.
  • the tensor interval does not necessarily have to be varied whenever the spinning conditions are changed.
  • the same tensor interval may be used for yarns of which diameters are within a certain range.
  • one aspect of the present invention provides an apron cradle for a spinning frame used in a double-spindle type apron draft device attached to a weighting arm.
  • the apron cradle includes a support shaft, a main cradle body, two top aprons, two bottom aprons, a tensor bar, a shaft, and two adjustors.
  • the support shaft is supported by the weighting arm.
  • the main cradle body is supported by the support shaft.
  • the two top aprons are supported by the main cradle body.
  • the two bottom aprons are respectively correspond to the two top aprons.
  • the tensor bar supports the two bottom aprons and is arranged facing toward the main cradle body.
  • the shaft is arranged near a distal end of the main cradle body.
  • the two adjustors are supported by the shaft at an eccentric position and arranged laterally outward from the weighting arm.
  • Each of the adjustors includes a plurality of contact surfaces, each contactable with the tensor bar so that a tensor interval defined between the apron cradle and the tensor bar is adjustable in order to vary a gap in plural steps between a distal portion of the top aprons and a distal portion of the bottom aprons.
  • a roller stand 11 supports a front bottom roller 12.
  • a tensor bar 13 and a middle bottom roller 14 are arranged at the rear of the front bottom roller 12.
  • Bottom aprons 15 run between the tensor bar 13 and the middle bottom roller 14.
  • a weighting arm 16 is arranged above the bottom rollers 12 and 14.
  • the weighting arm 16 has a distal end that supports front top rollers 17.
  • a support arm 18 is fixed to the weighting arm 16 at the rear of the front top rollers 17.
  • the support arm 18 has a distal end that supports the axially middle part of a support shaft 19 in a rotatable manner.
  • Middle top rollers 20 are supported at the two ends of the support shaft 19 so as to be integrally rotatable with each other.
  • the support shaft 19 supports an apron cradle 21.
  • a top apron 22 runs between each of the middle top rollers 20 and the apron cradle 21.
  • the apron cradle 21 includes a T-shaped main cradle body 23.
  • the main cradle body 23 includes an arcuate portion 23a and a plate spring 23b.
  • the arcuate portion 23a is formed near the basal end of the main cradle body 23 and is in contact with the peripheral surface of the support shaft 19.
  • the plate spring 23b ( Figs. 1 and 3A ) is fixed to the central part of the main cradle body 23 and is in contact with the support arm 18 so as to urge the top apron 22 toward the bottom aprons 15 with the main cradle body 23.
  • the main cradle body 23 has a distal end.
  • Left and right apron guides 24 are fixed to the main cradle body 23 near the distal end.
  • the top aprons 22 run between the middle top rollers 20 and the apron guides 24.
  • the apron guides 24 each include stoppers 24a, which are spaced apart by a distance that is substantially the same as the width of the corresponding top apron 22 to restrict lateral movement of the top apron 22.
  • the left and right aprons 22 are supported at symmetrical positions with respect to the weighting arm 16.
  • a support 25 is arranged at the middle of the distal end of the main cradle body 23.
  • the support 25 supports a shaft 26 in a rotatable manner.
  • the shaft 26 has two ends projecting from the support 25 and located between the left and right top aprons 22.
  • An adjustor 27 is fixed to each of the two ends of the shaft 26 to adjust the tensor interval.
  • the adjustors 27 are rotated integrally with the shaft 26.
  • the adjustors 27 are formed from metal, resin, or fiber reinforced resin.
  • the adjustors 27 are each shaped to be generally octagonal when viewed from the side.
  • One of the eight side surfaces of each adjustor 27 includes a groove 28.
  • the adjustor 27 has four other side surfaces respectively defining contact surfaces 27a, 27b, 27c, and 27d, which come into contact with the tensor bar 13 and adjust the tensor interval.
  • the adjustors 27 are supported by the shaft 26 laterally outward from the weighting arm 16 and between the left and right top aprons 22, which are supported by the main cradle body 23.
  • the adjustors 27 are each fixed to the shaft 26 at an eccentric position so that the gap between the tensor bar 13 and the main cradle body 23, or the tensor interval, differs depending on which one of the contact surfaces 27a, 27b, 27c, and 27d is in contact with the tensor bar 13. That is, the adjustors 27 are each supported by the shaft 26 so that the distance from the center of the shaft 26 differs between the contact surfaces 27a, 27b, 27c, and 27d. Accordingly, the adjustors 27 come into contact with the tensor bar 13 so that the tensor interval is adjustable in plural steps.
  • the adjustors 27 are each formed so that the tensor interval is largest when the tensor bar 13 is in contact with the contact surface 27a, second largest when in contact with the contact surface 27b, third largest when in contact with the contact surface 27c, and fourth largest when in contact with the contact surface 27d.
  • the corners of the adjustors 27 are chamfered.
  • the same tensor interval may be used if the diameters of the spinning yarns are within a constant range. Thus, the tensor interval does not have to be adjustable in a stepless manner.
  • the adjustors 27 each include a colored portion to indicate which one of the contact surfaces 27a, 27b, 27c, and 27d is in contact with the tensor bar 13.
  • the apron draft device In a state in which the pressure applied by the weighting arm 16 is cancelled, the apron cradle 21 holds the top aprons 22 in a state spaced apart from the bottom aprons 15.
  • the weighting arm 16 When the weighting arm 16 is arranged at a pressure application position (spinning position) at which it presses each top roller toward the bottom rollers, the top aprons 22 comes into contact with the bottom aprons 15.
  • the fiber bundles conveyed by the bottom aprons 15 and the top aprons 22 are held between the middle bottom roller 14 and the middle top rollers 20. In this state, the fiber bundles are stretched due to the difference of the rotation speed of the two front rollers 12 and 17 from the rotation speed of the aprons 15 and 22.
  • the open amount between the distal ends of the bottom aprons 15 and the top aprons 22 must be adjusted in accordance with the yarn number count or fiber type. Thus, the tensor interval is adjusted to a suitable value that is in correspondence with the spinning conditions.
  • the adjustors 27 are rotated so that the one of the contact surfaces 27a to 27d corresponding to the required tensor interval comes into contact with the tensor bar 13.
  • the adjustors 27 are rotated by inserting an operation tool 30, such as the distal end of a slotted screwdriver, into the groove 28.
  • an operation tool 30 such as the distal end of a slotted screwdriver
  • the left and right adjustors 27 are rotated integrally with the shaft 26.
  • the operation tool 30 is pivoted in the counterclockwise direction as viewed in Fig.
  • the operation tool 30 is pivoted in the clockwise direction as viewed in Fig. 4 .
  • the adjustors 27 are rotated until the contact surfaces that obtain the tensor interval suitable for the spinning conditions come into contact with the tensor bar 13.
  • the operator checks whether the colored surface corresponding to the required tensor interval can be seen at the predetermined position. This enables the operator to obtain the required tensor interval.
  • the adjustors 27 are rotated until the required colored surface can be seen at the predetermined position in each spindle, the adjustments are completed.
  • the preferred embodiment has the advantages described below.
  • the left and right adjustors 27 do not have to be integrally rotatable with the shaft 26 and may be supported by the shaft 26 to be independently rotatable.
  • the support 25 of the main cradle body 23 does not have to rotatably support the shaft 26, which extends through the support 25.
  • the shaft 26 does not have to be a single shaft commonly shared by the left and right adjustors 27. More specifically, separate coaxial shafts may be used in lieu of the shaft 26. This increases freedom for the configuration of the tensor interval adjustment compared to when the left and right adjustors 27 are integrally rotatable.
  • the adjustors 27 are not limited to a structure that enables adjustment of the tensor interval in four steps and is only required to enable adjustment of the tensor interval in plural steps. That is, the adjustors 27 may be formed to enable adjustment of the tensor interval in three steps or less or five steps or more. It is however preferable that the adjustors 27 be adjustable in three or more steps.
  • the adjustors 27 do not need to have an octagonal shape when viewed from the side.
  • the adjustors 27 may have any number of surfaces that come into contact with the tensor bar 13 to enable adjustment of the tensor interval in plural steps.
  • the adjustors 27 may each be a polygon having seven sides or less or a polygon having nine sides or more.
  • the adjustors 27 do not have to be polygonal.
  • the surfaces of the adjustors 27 other than the contact surfaces 27a to 27d may be curved.
  • the operation portion used to rotate each adjustor 27 does not have to be the groove 28.
  • a hole may be formed to receive one end of an operation member (operation tool 30) that rotates the adjustor 27.
  • a projection may be formed in lieu of the groove 28. In this case, an operation member capable of holding the projection or an operation member having a recess engageable with the projection is used to rotate the adjustor 27.
  • the operation portion of the polygonal adjustor 27 does not have to be formed on just one surface other than the contact surfaces 27a to 27d and may be formed on a plurality of surfaces. In this case, in comparison to when forming the operation portion on only one surface, the adjustor 27 is easier to rotate. Further, the operation portions do not all have to be formed by the grooves 28, holes, or projections. For example, as shown in Fig. 5B , a groove 28 may be formed on a surface other than the contact surfaces 27a to 27d, and a hole 31 may be formed in the contact surface 27b. Furthermore, an operation portion may be formed in the side surface of each of the adjustors 27.
  • the operation tool 30 may include a plurality of engagement portions that are simultaneously engageable with the grooves 28, holes, or projections.
  • an operation tool 30 including a plurality of engagement portions, which are arranged in a comb-like manner and spaced apart in accordance with the distance between the adjustors 27, may be used to simultaneously adjust the tensor interval with a plurality of the adjustors 27. In this case, the number of adjustment step can be reduced.
  • each adjustor 27 may be eliminated.
  • the stoppers 24a may be arranged on the upper surface of the main cradle body 23.
  • the apron cradle of the preferred embodiment is not limited to the draft device of a fine spinning frame and may be applied to the draft device of a roving frame or a tying frame.
  • An attachment which is detachably attached to the main cradle body 23, may be used to hold the support shaft 26 on the main cradle body 23.
  • a support shaft (19) is supported by the weighting arm (16).
  • a main cradle body (23) is supported by the support shaft (19) and supports top aprons (22). Bottom aprons (15) respectively correspond to the top aprons (22).
  • a tensor bar (13) supports the bottom aprons (15) and is arranged facing toward the main cradle body (23).
  • a shaft (26) arranged near a distal end of the main cradle body (23) supports adjustors (27, 27) laterally outward from the weighting arm (16).
  • Each adjustor (27, 27) includes contact surfaces (27a, 27b, 27c, 27d) contactable with the tensor bar (13) so that a tensor interval between the apron cradle and tensor bar (13) is adjustable to vary a gap between distal portions of the top and bottom aprons.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP09161642A 2008-06-03 2009-06-02 Riemchenkäfig für Spinnmaschinen Withdrawn EP2130956A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008145912A JP2009293143A (ja) 2008-06-03 2008-06-03 紡機のエプロンクレードル

Publications (1)

Publication Number Publication Date
EP2130956A1 true EP2130956A1 (de) 2009-12-09

Family

ID=41100732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09161642A Withdrawn EP2130956A1 (de) 2008-06-03 2009-06-02 Riemchenkäfig für Spinnmaschinen

Country Status (3)

Country Link
EP (1) EP2130956A1 (de)
JP (1) JP2009293143A (de)
CN (1) CN101597822A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101876110A (zh) * 2010-07-30 2010-11-03 宁波民丰实业有限公司 尾部机构可接插式全碳纤上销及其制作方法
CN107326483A (zh) * 2017-08-14 2017-11-07 张家港市广大纺机有限公司 一种新型纺纱摇架
CN107354542A (zh) * 2017-08-14 2017-11-17 张家港市广大纺机有限公司 一种快速定位加压装置的摇架

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3461938B1 (de) * 2017-09-29 2021-09-29 Pinter Caipo, S.A.U. Riemchenkäfigaggregat für ein streckwerk einer spinnmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03113025A (ja) 1989-09-28 1991-05-14 Murata Mach Ltd ドラフト装置のエプロンニツプ圧調整方法
EP0450361A1 (de) * 1990-04-06 1991-10-09 Maschinenfabrik Rieter Ag Streckwerk mit mindestens einer Riemchen-Verzugszone
DE19916375A1 (de) * 1998-04-20 1999-10-21 Toyoda Automatic Loom Works Abstandsklammer für ein Riemchenstreckgerät
DE10234599A1 (de) * 2001-07-31 2003-02-13 Rieter Ag Maschf Doppelriemchenstreckwerk mit Mittel zum Festlegen des Abstands zwischen Oberriemchen und Unterriemchen
DE10321893A1 (de) * 2003-05-07 2004-12-02 Spindelfabrik Süssen Schurr, Stahlecker & Grill GmbH Oberriemchenkäfig für eine Spinnmaschine
EP2034060A1 (de) * 2007-09-10 2009-03-11 Maschinenfabrik Rieter Ag Textilmaschine mit einem Streckwerk

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03113025A (ja) 1989-09-28 1991-05-14 Murata Mach Ltd ドラフト装置のエプロンニツプ圧調整方法
EP0450361A1 (de) * 1990-04-06 1991-10-09 Maschinenfabrik Rieter Ag Streckwerk mit mindestens einer Riemchen-Verzugszone
DE19916375A1 (de) * 1998-04-20 1999-10-21 Toyoda Automatic Loom Works Abstandsklammer für ein Riemchenstreckgerät
JPH11302930A (ja) 1998-04-20 1999-11-02 Toyota Autom Loom Works Ltd エプロンドラフト装置用ディスタンスクリップ
DE10234599A1 (de) * 2001-07-31 2003-02-13 Rieter Ag Maschf Doppelriemchenstreckwerk mit Mittel zum Festlegen des Abstands zwischen Oberriemchen und Unterriemchen
DE10321893A1 (de) * 2003-05-07 2004-12-02 Spindelfabrik Süssen Schurr, Stahlecker & Grill GmbH Oberriemchenkäfig für eine Spinnmaschine
EP2034060A1 (de) * 2007-09-10 2009-03-11 Maschinenfabrik Rieter Ag Textilmaschine mit einem Streckwerk

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101876110A (zh) * 2010-07-30 2010-11-03 宁波民丰实业有限公司 尾部机构可接插式全碳纤上销及其制作方法
CN101876110B (zh) * 2010-07-30 2011-12-28 宁波民丰实业有限公司 尾部机构可接插式全碳纤上销及其制作方法
CN107326483A (zh) * 2017-08-14 2017-11-07 张家港市广大纺机有限公司 一种新型纺纱摇架
CN107354542A (zh) * 2017-08-14 2017-11-17 张家港市广大纺机有限公司 一种快速定位加压装置的摇架

Also Published As

Publication number Publication date
JP2009293143A (ja) 2009-12-17
CN101597822A (zh) 2009-12-09

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