WO2012073255A2 - Dispositif de guidage de bande avec appareil casse-fil et procédé correspondant - Google Patents

Dispositif de guidage de bande avec appareil casse-fil et procédé correspondant Download PDF

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Publication number
WO2012073255A2
WO2012073255A2 PCT/IN2011/000808 IN2011000808W WO2012073255A2 WO 2012073255 A2 WO2012073255 A2 WO 2012073255A2 IN 2011000808 W IN2011000808 W IN 2011000808W WO 2012073255 A2 WO2012073255 A2 WO 2012073255A2
Authority
WO
WIPO (PCT)
Prior art keywords
web
guiding device
funnel
stop motion
plate
Prior art date
Application number
PCT/IN2011/000808
Other languages
English (en)
Other versions
WO2012073255A3 (fr
Inventor
Krishnakumar Narayanaswamy
Mani Govindarajulu
Narendra Venkateshan
Senthilkumar Ramasamy Rathinasamy
Ventakachari Cholapadi Venkatesan
Original Assignee
Lakshmi Machine Works Ltd
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 Lakshmi Machine Works Ltd filed Critical Lakshmi Machine Works Ltd
Priority to CN201190000904.4U priority Critical patent/CN203429309U/zh
Publication of WO2012073255A2 publication Critical patent/WO2012073255A2/fr
Publication of WO2012073255A3 publication Critical patent/WO2012073255A3/fr

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies

Definitions

  • the invention relates to a guiding device for non-woven fibre web for converting the spread web into a sliver form at the outlet of a drawing arrangement of a textile machine, and a sliver guiding arrangement for guiding the sliver coming from the sliver funnel to a draw-off-disc arrangement.
  • this invention relates to textile machine, especially a drawing frame, card or a combination machine, with equipment producing a spread non- woven web, for example, with a drawing arrangement.
  • the present invention relates to spinning preparatory machines such as draw frame.
  • a plurality of slivers is doubled and the doubled sliver is conveyed into the drawing unit provided in the draw frame.
  • the slivers are drafted to form a fibre web and delivered through the pair of delivery rollers of the drawing unit.
  • the spread fibre web must be shaped again to form the silver. This is performed by a web funnel and a sliver guide tube which are provided at the delivery portion of the drawing unit.
  • a calendering unit is provided downstream of the drawing unit which comprises at least two opposing draw-off discs by means of which the sliver is condensed. After passing through the pair of draw-off discs the condensed sliver is passed to the deposition device of the draw frame.
  • a pair of delivery rollers convey the said fibre web into a web collector which is arranged at the outlet of a drawing unit of the draw frame.
  • the web collector is pivotably mounted on the machine frame using a connecting plate and a cylindrical shaft.
  • the fibre web is combined in the web collector and is shaped by the insert provided in the middle of the web collector to form a sliver again and is passed to a sliver guide tube of considerable length.
  • the web collector and the sliver funnel are spaced apart by a considerable distance by way of the sliver guide tube.
  • the sliver is inserted into the sliver funnel which deflects the conveying direction of the sliver by about 90° and inserts it between the draw-off disc arrangement. After passing through the pair of draw-off discs the sliver condensed there is passed to the deposition device of the drawing frame.
  • a stop motion arrangement is provided in the outlet area of the drawing unit to stop the machine in case of sliver breakage at any of the place between delivery roller to draw-off roller.
  • a sensor plate is mounted along with the web collector arrangement and it is being sensed by a sensing means for example limit switch.
  • the sliver passes through the sliver guide tube which has a length of at least 264mm.
  • This lengthy sliver guide tube affects the quality of the delivery sliver while running the machine at higher speeds (More than 800 metres per minute).
  • the wastage of material is high during the delivery sliver breakage and the frequent cleaning of sliver guide tube is required to avoid the short fibre accumulation on the inner wall of the sliver guide tube which is disadvantageous.
  • the existing stop motion arrangement consist a web collector, pair of connecting plates and a sensor plate which requires higher opening force for operation during sliver breakages. Hence, more accumulation of material in the web collector is required to stop the machine. This would lead to delay in sensing the breakages and by this wastage of material is increased. There has thus been a persistent need to develop an improved web guiding apparatus and stop motion arrangement that would overcome the disadvantages present in the existing textile machines especially draw frames.
  • the basic object of the present invention is to provide an improved web guiding apparatus which would overcome the disadvantages present in the web guiding arrangement of existing draw frames.
  • Yet another object of the present invention is directed to provide a textile draw frame with improved stop motion arrangement which is simple in construction and functioning effectively than the stop motion devices present in the existing draw frames.
  • the web guiding device with stop motion arrangement for a textile machine such as draw frame comprising a drafting arrangement with plurality of drafting rollers and a deflecting roller, a web funnel with a stop motion arrangement, a sliver funnel with sliver funnel holder, and a calendering unit with pair of draw-off discs, wherein said web funnel is provided with at least two movable plates; the movement of one plate actuates the other plate to stop the machine.
  • the web funnel in the web guiding device comprises a web collector, back plate, front plate, insert and an insert holder.
  • Said back and front plates are pivotably mounted on the sensor plate holders which are mounted on the bottom portion of the web collector and both the plates are provided with at least one V shaped portion.
  • At least one of the 'L' shaped portion is constructed with a profile and at least one sensing means is mounted on the bearing saddle in a position to sense the movement of said profile.
  • the back plate Whenever the fibre mass increases in the curved portion, of the web collector during sliver breakage, the back plate is pushed out by the force of said accumulated mass; the 'U shaped portion of the back plate moves upward and apply a force on the V shaped portion; by means of this force the front plate turn away from the web collector and moves the profile upward; the sensing means senses this movement and stop the machine.
  • Fig - 1 is the schematic illustration of the existing web guiding apparatus and stop motion arrangement of the existing draw frames.
  • Fig - 2 is the schematic illustration of web guiding arrangement according to the present invention.
  • Fig - 3 of the drawings illustrates the web collector according to the present invention.
  • Fig - 4 of the drawings illustrates the isometric view of stop motion arrangement according to the present invention.
  • Fig - 5 of the drawings illustrates the position of stop motion arrangement in working condition.
  • Fig - 5a of the drawings illustrates the position of stop motion arrangement in non-working condition.
  • FIG. 1 illustrates the existing system of draw frames showing the position of web guiding arrangement.
  • the spread fibre web is converted as sliver (S) form by the insert (4) provided in the web funnel (3).
  • the undrawn sliver (S) is inserted into a long guide tube (5) which is mounted on a table (6) and passed into the calendering unit through a sliver funnel (7).
  • the sliver funnel deflects the sliver (S) by substantially 90° into the clamping gap of the draw-off discs (8, 9) of the calendering unit. After calendering, the sliver emerges vertically downwards from the calendering unit and stored in a deposition device.
  • the web funnel (3) is positioned in front of the delivery drafting rollers using a pair of connecting plates (10). Said web funnel (3) is mounted at one end of the connecting plates (10) and the other end of the connecting plates (10) are fixed on a cylindrical shaft (1 1 ).
  • the cylindrical shaft (11 ) is pivotably mounted on the table (6).
  • a sensor plate (12) is mounted on the other side of the cylindrical shaft (1 1 ).
  • a sensing means for example limit switch (13) is rigidly mounted on the side portion of the table (6) and positioned above the other end of the sensor plate (12). During normal running, the switch (14) of the sensing means (13) is continuously pressed by the sensor plate (12).
  • the delivered fibre material accumulates at the inner portion of the web funnel (3).
  • the increment in the mass of the accumulated material upwardly pushes the web funnel (3) and by this the sensor plate (12) moves downwards. This downward movement of said sensor plate releases the switch (14) and deactivates the sensing means and stops the machine.
  • Fig - 2 discloses the embodiment of the present invention.
  • a deflecting roller (20) is added in the drafting arrangement which causes a deviation of substantially 60° from the conveying direction of the fibre web and introduces the sliver into a web funnel (21 ).
  • the web funnel (21 ) consist a web collector (22), a back plate (23) and a front plate (24).
  • a bore (25) is provided at the middle of the web collector (22) and the sliver (also referred to as the fibre web) arriving in a wide state is folded, turned over and inserted into a sliver forming portion.
  • Said sliver forming portion consists an insert (26) and it is firmly held by the insert holder (27).
  • Said insert holder is mounted at the bottom portion of the web collector (22) and secured by using fastening means.
  • a slot (28) is provided at the side walls (29) of the web collector to locate the web funnel (21 ) downstream to the delivery drafting rollers using the pins (30) provided in the bearing saddle.
  • the front portion of the insert holder (27) engages in the inner portion of a sliver funnel (31 ).
  • the sliver funnel (31) is constructed as an insert and, with a V- shaped end converging to a point, engages between the draw-off discs (8, 9) to immediately against the clamping gap (32).
  • the sliver funnel (31 ) is shaped in such a way that it can be inserted axially into a sliver funnel holder (33).
  • the sliver funnel holder (33) has a central, substantially cylindrical opening into which the sliver funnel (31 ) is inserted and can be held.
  • Fig - 4 illustrates the stop motion arrangement in the web funnel (21 ) according to the present invention.
  • Said stop motion arrangement (41 ) comprises a back plate (23), a front plate (24) and a sensing means (49).
  • the front and back plates can be made up of either metallic or non-metallic material.
  • the back plate (23) is pivotably mounted on the pins (42, 42a) provided in the sensor plate holders (48, 48a) which are mounted on the bottom portion of the web collector (22).
  • the front plate (24) is pivotably mounted on the pins (44, 44a) provided at the sensor plate holders (48, 48a).
  • the V shaped portion (43) of the back plate (23) rests on the L shaped portion (47) of the front plate (24).
  • a coated steel plate (45) is secured by means of screws (46) to keep the front plate in working position during normal running.
  • the 'L' shaped portion (47) is constructed with a profile (50).
  • the sensing means (49) is mounted on the bearing saddle in a position to sense the movement of Profile (50).
  • the 'L' shaped Portion (43) of the back plate (23) presses the 'U shaped portion (50) of the Front plate (24) during normal running of the machine.
  • Fig - 5 and Fig - 5a illustrates the working of stop motion arrangement according to the present invention.
  • the back plate (23) and the front plate (24) are in contact with the web collector (22) as shown in Fig - 5.
  • the fiber web accumulates in the curved portion of the web collector (22).
  • the back plate will be pushed out by the force of the accumulated mass and the back plate (23) moves backwards as shown by the arrow (A). Due to this movement, the 'L' shaped portion (43) moves upwards and apply a force on the 'L' shaped portion (47).
  • Fig - 5a shows the position of stop motion arrangement during non- working condition.
  • the web guiding apparatus with stop motion arrangement has the following advantages.
  • the web guiding arrangement eliminates the lengthy sliver funnel and by this the speed of the machine can be increased up to 1 100 metres per minute where as in the existing arrangement it is possible to run only up to 800 metres per minute.
  • the running distance and the deflecting angle of the delivery sliver are considerably reduced and by this the quality of delivered material is improved.
  • the stop motion arrangement in the web guiding apparatus is simple in construction and works more efficiently than the prior art.
  • An opening force of 1 .485 kgs is required to operate the existing stop motion arrangement where as in the present invention only 0.04 kg of opening force is enough to stop the machine. Therefore, even minimum accumulation of fibre web in the web collector would stop the machine immediately and by this fibre material wastage is considerably reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne un dispositif de guidage de bande avec appareil casse-fil destiné à une machine à textile tel qu'un banc d'étirage comprenant un système d'étirage avec plusieurs rouleaux étireurs et un rouleau de déviation (20), un entonnoir de filage de bande (21) avec un appareil casse-fil (41), un entonnoir de filage de ruban (31) avec un support d'entonnoir de filage de ruban (33), et une unité de calandrage avec une paire de disques détacheurs (8, 9), l'entonnoir de filage (21) comprenant au moins deux plaques mobiles (23, 24), le mouvement d'une plaque actionnant l'autre plaque pour arrêter la machine.
PCT/IN2011/000808 2010-11-30 2011-11-21 Dispositif de guidage de bande avec appareil casse-fil et procédé correspondant WO2012073255A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201190000904.4U CN203429309U (zh) 2010-11-30 2011-11-21 具有停止运动装置的织物引导设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN3618/CHE/2010 2010-11-30
IN3618CH2010 2010-11-30

Publications (2)

Publication Number Publication Date
WO2012073255A2 true WO2012073255A2 (fr) 2012-06-07
WO2012073255A3 WO2012073255A3 (fr) 2012-09-07

Family

ID=46172329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2011/000808 WO2012073255A2 (fr) 2010-11-30 2011-11-21 Dispositif de guidage de bande avec appareil casse-fil et procédé correspondant

Country Status (2)

Country Link
CN (1) CN203429309U (fr)
WO (1) WO2012073255A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015106808A1 (de) * 2015-04-30 2016-11-03 Rieter Ingolstadt Gmbh Vliestrichter zum Verdichten eines Faservlieses mit einem Leitelement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5689856A (en) * 1995-04-07 1997-11-25 Rieter Ingolstadt Spinnereimaschinenbau Ag Swiveling fleece funnel for fiber sliver guidance without guiding channel and process for the operation of same
US6401303B1 (en) * 1999-09-22 2002-06-11 Rieter Ingolstadt Spinnereimaschinenbau Ag Fleece funnel
CN1707000A (zh) * 2004-06-11 2005-12-14 特鲁菲舍尔股份有限公司及两合公司 用于形成纱条纺织机上的装置
CN1766186A (zh) * 2004-10-27 2006-05-03 吕特英格纺织机械制造股份公司 纺纱准备机和用于纺纱准备机牵伸装置的罩盖
CN101037819A (zh) * 2006-03-17 2007-09-19 吕特英格纺织机械制造股份公司 非织造物的导向装置和纺织机械

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5689856A (en) * 1995-04-07 1997-11-25 Rieter Ingolstadt Spinnereimaschinenbau Ag Swiveling fleece funnel for fiber sliver guidance without guiding channel and process for the operation of same
US6401303B1 (en) * 1999-09-22 2002-06-11 Rieter Ingolstadt Spinnereimaschinenbau Ag Fleece funnel
CN1707000A (zh) * 2004-06-11 2005-12-14 特鲁菲舍尔股份有限公司及两合公司 用于形成纱条纺织机上的装置
CN1766186A (zh) * 2004-10-27 2006-05-03 吕特英格纺织机械制造股份公司 纺纱准备机和用于纺纱准备机牵伸装置的罩盖
CN101037819A (zh) * 2006-03-17 2007-09-19 吕特英格纺织机械制造股份公司 非织造物的导向装置和纺织机械

Also Published As

Publication number Publication date
WO2012073255A3 (fr) 2012-09-07
CN203429309U (zh) 2014-02-12

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