EP3981898A1 - Agencement de frein de broche pour unité de rattache de fil de machine à filer à anneaux - Google Patents

Agencement de frein de broche pour unité de rattache de fil de machine à filer à anneaux Download PDF

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Publication number
EP3981898A1
EP3981898A1 EP21194831.0A EP21194831A EP3981898A1 EP 3981898 A1 EP3981898 A1 EP 3981898A1 EP 21194831 A EP21194831 A EP 21194831A EP 3981898 A1 EP3981898 A1 EP 3981898A1
Authority
EP
European Patent Office
Prior art keywords
spindle
unit
ring spinning
spinning machine
automatic piecing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21194831.0A
Other languages
German (de)
English (en)
Inventor
Jeganathan Pasupathy
Arulanandam Thilip Kumar
Selvaraj Santhosh
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.)
Lakshmi Machine Works Ltd
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
Publication of EP3981898A1 publication Critical patent/EP3981898A1/fr
Pending 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
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/04—Spindles
    • D01H7/22—Braking arrangements
    • D01H7/2208—Braking arrangements using mechanical means
    • D01H7/2216—Braking arrangements using mechanical means with one or two manually actuated shoe-brakes acting on a part of the whorl

Definitions

  • the present invention relates to textile ring spinning machines.
  • the invention relates to an automatic yarn piecing device in ring spinning machines.
  • the invention relates to spindle brake unit for automatic piecing unit for spindle braking operation in textile ring spinning machines.
  • Ring spinning machines are the resultant yarn producing and crucial machines in textile spinning mills. Textile roving materials produced from roving frame machines are usually fed into the ring spinning machines. The said ring spinning machines delivers the final stage of cotton in spinning line, so called yarn.
  • yarn breakage occurs frequently and it is to be continuously monitored and pieced by the manual labours. The yarn breakage occurs due to various parameters of yarn and machine and it is unavoidable.
  • manual labours continuously watch for yarn breakages and perform manual piecing of broken yarns. This has to be done for a machine frame normally consisting of more than 1600 spindles. Then, yarn spinning sequence has to be restarted then and there after yarn breakage in order to resume yarn spinning and to avoid wastage of yarn.
  • the automatic piecing unit is in the form of a movable vehicle with wheels/rails.
  • the said piecing vehicle stops at respective spindle units which require piecing attention.
  • the piecing unit in general moves longitudinally over the machine frame aisles. Before initiating piecing operation, the piecing vehicle stops in front of the spindle position of ring spinning machine.
  • the broken yarn spindle has to be applied brake to initiate piecing operation.
  • the conventional spindle brake unit available in ring spinning machines in the form of hand actuated lever to hold the spindle wharve to stop the spindle rotation forms hindrance for automatic piecing unit to pass inside piecing zone. Hence, the conventional spindle brake needs to be removed.
  • the automatic piecing unit has to stop the rotation of broken yarn spindle while performing piecing operations with the aid of contacting member provided in the automatic piecing unit, which is capable of moving forward and backward.
  • the said contacting member abuts on the front face of ring spinning spindle wharve and acts as brake to stop the rotation of spindle.
  • the spindle brake has to be applied intermittently multiple times to enable operation of various piecing modules during the piecing sequence.
  • the impact load of said contacting member of spindle brake over the spindle wharve due to one side load creates spindle distortion / deflection.
  • the present invention provides an improved braking arrangement for spindles to enable automatic piecing in ring spinning machines.
  • the main object of the present invention is to provide an improved piecing unit for textile ring spinning machines.
  • Another object of the present invention is to provide a braking arrangement for spindle in the automatic piecing unit of the textile ring spinning machines.
  • Another object of the present invention is to provide an improved braking arrangement for spindle in the automatic piecing unit of the textile ring spinning machines which does not cause any damage to the spindle.
  • the automatic piecing unit is provided for textile ring spinning machines.
  • the automatic piecing unit assists in yarn piecing operation during yarn breakage incidents in ring spinning machines.
  • the spindle rotation should be stopped, before and/or during the piecing operation.
  • the present invention is provided with an improved spindle brake unit in automatic piecing unit.
  • the said spindle brake unit comprises at least two gripper arms adapted to move sideways with respect to each other.
  • the at least two gripper arms are substantially parallel to each other, and are positioned substantially perpendicular to a longitudinal direction of the ring spinning machine.
  • Each of the at least two gripper arms is coupled with at least one gripping finger adapted to grip a spindle wharve of a spindle of the ring spinning machine to stop rotation of the spindle.
  • Each of the at least one gripping finger comprises one or more brake shoes disposed at an inner end thereof, to grip the spindle wharve of the spindle of the ring spinning machine.
  • the gripper arms move sideways with respect to each other in a linear motion guideway of the spindle brake unit.
  • the spindle brake unit is positioned concentrically around the spindle wharve of the spindle of the ring spinning machine in working position.
  • each of the at least two gripper arms is connected to the at least one gripping finger by a connecting means.
  • the spindle brake unit stops and releases the rotation of the spindle of the ring spinning machine for required number of times as per predetermined programs when a piecing operation of a broken yarn of the spindle is to be performed.
  • the automatic piecing unit comprises an actuating means for moving the spindle brake unit towards the spindle.
  • the one or more brake shoes are made of any of a polymer material and an elastomer material.
  • sideways movement of the at least two gripper arms is enabled by air from an air source of the ring spinning machine or the automatic piecing unit.
  • a method for braking a spindle of a ring spinning machine by an automatic piecing unit comprises placing a spindle brake unit of the automatic piecing unit at a predetermined distance from the spindle centre in a circumferential manner around the spindle of the ring spinning machine.
  • the method further comprises gripping a spindle wharve of the spindle of the ring spinning machine by means of at least two gripper arms coupled with at least one gripping finger, adapted to move sideways with respect to each other, to stop rotation of the spindle during piecing operation.
  • the ring spinning machine (1) of the present invention is provided with automatic piecing unit (2).
  • the automatic piecing unit (2) moves longitudinally along the aisle of the ring spinning machine (1).
  • the ring spinning machine (1) is capable of winding yarn (not shown) onto a bobbin mounted to spinning spindle (3), so called cop.
  • the automatic piecing unit (2) moves to particular broken yarn spindle (3) and pieces the broken yarn with the delivery yarn from drafting zone (not shown).
  • the spindle (3) rotation must be stopped to assist the piecing operation.
  • the automatic piecing unit (2) is provided with an improved spindle brake unit (4) mounted in the automatic piecing unit (2).
  • the spindle brake unit (4) is provided with suitable actuating means to move the braking unit (4) towards the spindle (3).
  • the spindle brake unit (4) along with actuating means is mounted to the automatic piecing unit (2) through suitable connecting means and brackets.
  • the braking unit (4) is provided with two substantially parallel gripper arms (6a, 6b) capable of moving sideways towards and away from each other in a horizontal linear motion guideway (7).
  • the said horizontal linear motion guideway (7) is provided by suitable air source from auto piecing unit (2) and/or from other air source in spinning machine / mill.
  • the said gripper arms (6a, 6b) are mounted with two gripping jaws (8a, 8b) each connected externally through connecting means (9) such as screws in the form of gripping fingers / jaws (8a, 8b).
  • the spindle brake unit (4) In working position, the spindle brake unit (4) is positioned concentrically around the spindle wharve (10) below the ring rail.
  • the external gripping fingers / jaws (8a, 8b) connected to gripping arms (6a, 6b) are placed substantially perpendicular to the longitudinal direction of the ring spinning machine.
  • the spindle brake unit (4) After the spindle brake unit (4) is placed in working position, the spindle brake is applied by means of air source through the two parallel gripper arms (6a, 6b).
  • the spindle wharve (10) is gripped firmly on two sides by means of gripping fingers (8a, 8b) connected to the gripping arms (6a, 6b).
  • the gripping fingers (8a, 8b) are provided with brake linings / shoes (11) at the inner ends so that the gripping fingers (8) with brake shoes (11) holds the spindle wharve (10) sideways firmly at the circumference of spindle wharve (10) and stops the spindle (3) rotation during / before initiating piecing.
  • the brake linings (11) are made of a polymer or an elastomer material preferably or the like.
  • the braking member grips the spindle wharve at double side without any impact load and with lesser force itself as the load is distributed at two sides. Therefore, the disadvantages of spindle distortion / deflection, misalignment, wobbling and bending are avoided.
  • the gripping arm (6a / 6b) and gripping finger (8a / 8b) can be integrated as a single piece at each ends.
  • the spindle brake is actuated and released for required number of times as per predetermined programs to assist in working of various modules of the automatic piecing unit.
  • the brake is applied and relieved at any sequence and any timing during piecing operation. Since the spindle is stopped by means of two gripping fingers sideways, the spindle is stopped in more precise manner and held firmly. The spindle misalignment due to braking is completely eliminated in the present invention.
  • the number of gripping fingers / jaws is not limited to two.
  • the jaws can be provided in any numbers more than two.
  • the spindle wharve is not only braked sideways by linear gripping fingers. It can also be gripped around the circumference anywhere by means of rotary gripping jaws and the like.
  • the above described automatic piecing unit for ring spinning machine frame provides an effective spindle braking arrangement for enabling reliable piecing operation and prevents damage to machine components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP21194831.0A 2020-10-12 2021-09-03 Agencement de frein de broche pour unité de rattache de fil de machine à filer à anneaux Pending EP3981898A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN202041044301 2020-10-12

Publications (1)

Publication Number Publication Date
EP3981898A1 true EP3981898A1 (fr) 2022-04-13

Family

ID=77640469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21194831.0A Pending EP3981898A1 (fr) 2020-10-12 2021-09-03 Agencement de frein de broche pour unité de rattache de fil de machine à filer à anneaux

Country Status (2)

Country Link
EP (1) EP3981898A1 (fr)
CN (1) CN114351305A (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1045332A (en) * 1963-01-15 1966-10-12 Mackie & Sons Ltd J Improvements relating to textile machinery
US3406512A (en) * 1966-12-27 1968-10-22 Schurr Stahlecker & Grill Spindle for spinning or twisting machines
GB1399032A (en) * 1972-04-11 1975-06-25 Hamel Gmbh Zwirnmaschinen Two-for-one twisting apparatus
US3911657A (en) * 1969-08-04 1975-10-14 Leesona Corp Textile machine
EP0388938A1 (fr) * 1989-03-22 1990-09-26 Maschinenfabrik Rieter Ag Procédé pour faire fonctionner un métier à filer et robot de manipulation pour la mise en oeuvre de ce procédé
CN204000030U (zh) * 2014-08-08 2014-12-10 浙江越剑机械制造有限公司 一种大卷装倍捻机的锭子刹车装置
EP3556918A1 (fr) * 2018-04-20 2019-10-23 Lakshmi Machine Works Ltd. Agencement de levage de fil pour unité de rattachement et procédé associé

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1045332A (en) * 1963-01-15 1966-10-12 Mackie & Sons Ltd J Improvements relating to textile machinery
US3406512A (en) * 1966-12-27 1968-10-22 Schurr Stahlecker & Grill Spindle for spinning or twisting machines
US3911657A (en) * 1969-08-04 1975-10-14 Leesona Corp Textile machine
GB1399032A (en) * 1972-04-11 1975-06-25 Hamel Gmbh Zwirnmaschinen Two-for-one twisting apparatus
EP0388938A1 (fr) * 1989-03-22 1990-09-26 Maschinenfabrik Rieter Ag Procédé pour faire fonctionner un métier à filer et robot de manipulation pour la mise en oeuvre de ce procédé
CN204000030U (zh) * 2014-08-08 2014-12-10 浙江越剑机械制造有限公司 一种大卷装倍捻机的锭子刹车装置
EP3556918A1 (fr) * 2018-04-20 2019-10-23 Lakshmi Machine Works Ltd. Agencement de levage de fil pour unité de rattachement et procédé associé

Also Published As

Publication number Publication date
CN114351305A (zh) 2022-04-15

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