EP1231306A2 - Verbesserte Schärmaschine und Schärverfahren - Google Patents

Verbesserte Schärmaschine und Schärverfahren Download PDF

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Publication number
EP1231306A2
EP1231306A2 EP01830793A EP01830793A EP1231306A2 EP 1231306 A2 EP1231306 A2 EP 1231306A2 EP 01830793 A EP01830793 A EP 01830793A EP 01830793 A EP01830793 A EP 01830793A EP 1231306 A2 EP1231306 A2 EP 1231306A2
Authority
EP
European Patent Office
Prior art keywords
threads
belts
tighteners
warper
warp
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
EP01830793A
Other languages
English (en)
French (fr)
Other versions
EP1231306B1 (de
EP1231306A3 (de
Inventor
Roberto Vieri
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.)
Karl Mayer Textilmaschinenfabrik GmbH
Original Assignee
Age SNC Di Vieri A & C
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 Age SNC Di Vieri A & C filed Critical Age SNC Di Vieri A & C
Publication of EP1231306A2 publication Critical patent/EP1231306A2/de
Publication of EP1231306A3 publication Critical patent/EP1231306A3/de
Application granted granted Critical
Publication of EP1231306B1 publication Critical patent/EP1231306B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H3/00—Warping machines
    • D02H3/04—Sample warpers

Definitions

  • the present invention refers to an improved warper and to a method of warping.
  • warpers used for carrying out a so-called "thread-by-thread” warping have a drum or "barrel"-like structure over which the warp threads are wound according to a sequence corresponding to the selected warping program.
  • the threads which are fed by a plurality of reels disposed on a creel in a precise order, are wound over said structure by means of a thread-guide rod rotating in a vertical plane.
  • the free end of each of said rods is suitably shaped to engage the threads as they are gradually handed over by a presentation system and laid down onto a series of ring-like closed belts.
  • Such belts develop onto the drum orthogonally to the plane of rotation of the thread-guide rod.
  • the turns of thread allow the turns of thread to move away progressively from the deposition site by displacing the same turns along the longitudinal development of the drum. Once a predetermined number of turns of thread in the course of formation is reached, the same thread is released and drawn back up to the point of initial presentation. Upon completion of the warp, the latter is downloaded from the warper, that is, transferred onto a beam intended for a loom or other textile machine or apparatus.
  • the main object of the present invention is to overcome the said drawbacks. This result has been achieved, according to the invention, by providing an apparatus and implementing a method having the characteristics described in the independent claims. Further characteristics being set forth in the dependent claims.
  • the present invention makes it possible to adjust the tension of the warp threads, that is, the pressure exerted by them upon the belts and structure of the warper. It is thus possible to drive the belts more rapidly in both the directions of the respective longitudinal axes, that is, both in the direction of formation or "growth" of the warp and in the opposite direction. In addition to this, there is the fact that the warp can be discharged and transferred onto the beam far more easily.
  • the system according to the invention is relatively simple to make, cost-effective and reliable even after a prolonged service life and can be implemented both in case of thread-by-thread and multi-thread warping.
  • a warper according to the invention comprises:
  • the threads (F) are presented by the means (6) to the rod (5) in the order preset by the program.
  • the rod (5) once it has hooked a thread (F) presented by the means (6), draws it into rotation about the axis (o-o) to allow it to be laid down onto the active surface (21) of the belts, that is, the surface facing outwardly.
  • the belts (2) as the rod (5) rotates with the thread hooked by the same rod, move in the direction of arrow (A) in Fig. 2, owing to the rotation imposed to the respective pulleys (20).
  • the thread is moved away from the rod (5) and recovered by the means (6), and the same operation is then repeated for the other threads until the warp is completed.
  • a warper according to the present invention is advantageously provided with one or more tension means or tighteners (7) whose operational arrangement can be varied and on which the threads (F) can be deposited by the rod (5), the same threads being able to move afterwards from said tighteners onto the belts (2).
  • the said tighteners (7) are engaged with the structure (1) in correspondence of the space between any two belts (2) on the side of rod (5).
  • Each tightener (7) is associated with a corresponding actuator (71) allowing its operational arrangement to be changed according to the program.
  • the said tighteners (7) are intended - as best described later on with reference to the diagram of Fig. 8 - to dispose the threads (F) being carried by the rod (5), partly onto a circumference (C1) (delimited by an array of suitable surfaces (70) exhibited by the same tighteners on the side facing outwardly) having a diameter larger than the circumference (C2) delimited by the active surface (21) of belts (2) in any plane orthogonal to the axis (o-o) of structure (1), and partly onto said circumference (C2).
  • each thread (F) drawn by the rod (5) into rotation about the axis (o-o) will result partly onto the surface (70) of tighteners (7) and partly onto the belts (2).
  • the decreasing diameter or length of the turns of thread implies a corresponding reduction of their tension and, accordingly, the pressure exerted onto the belts (2) and structure (1) decreases as well.
  • the threads (F) move spontaneously onto the belts (2) owing to the chute-like shape of surfaces (70) exhibited by the tighteners (7).
  • each sensor (8) is able to be mounted on a corresponding tightener (7) upstream of the relevant belt (2), and may exhibit an external surface making up a joining track between the said surface (70) of tighteners (7) and the belts (2).
  • each sensor (8) can be made up of a load cell of a type normally available on the market.
  • each sensor (8) are transmitted to a programmable electronic unit (UE) - consisting for example of a PC - with which the actuators (71) are associated.
  • UE programmable electronic unit
  • data detected by them may be averaged to find a mean value which the unit (UE) will assume to be the pressure exerted in the whole by the warp on the tighteners. Should this value be greater than a programmed limit, the actutators (71) would be activated so as to dispose the surfaces (70) of tighteners (7) over a cylindrical surface of larger radius, until the pressure value detected by sensors (8) will coincide with the programmed one, as required.
  • the tighteners (7) may be activated according to a program providing for changing the operative arrangement thereof as the warp increases, in order to thereby increase progressively, either with continuity or step-by-step, the diameter of said surface also in the absence of sensors (8).
  • the plane P1 orthogonal to the rotation axis (o-o) of rod (5) contains the surface (C1) which corresponds to the cross-section of the surface delimited by the tighteners' surfaces (70).
  • the plane (P1) is the one in which the rod puts down the threads (F).
  • the surfaces (70) of tighteners (7) result astride of such plane, that is, each one of the tighteners is disposed partly upstream and partly downstream of said plane (P1).
  • the plane P2, also orthogonal to said axis (o-o) is the one which contains the circumference (C2) whose radius is constant along the axis (o-o).
  • each tightener (7) is made up of a lever longitudinally located between two adjacent belts (2).
  • Such lever is engaged with the structure (1) via a horizontal hinge (72) in correspondence of the end which is the furthest from the plane (P1) of action of rod (5).
  • This connection allows the lever (7) to be rotated upwards (U) and, respectively, downwards (D) under control of an actuator (71) which, in the example, is an electric motor fixed to the structure (1).
  • an actuator (71) Fitted on the shaft of motor (71) is a worm screw (73). Meshing with this screw is a pinion (74) associated with a rack (75) which is engaged with the lever (7) at a point (V) upstream of the hinge (72).
  • Starting the motor (71) causes the rotation of the worm screw (73) and of pinion-rack group (74, 75). This causes the rotation of the lever (7) about the axis of hinge (72), either upwards or downwards, depending on how the motor (71) is operated.
  • the latter is electrically connected to a D/A converter (9) able to generate electrical pulses in response to corresponding control signals from the programmable unit (UE).
  • the latter receives and processes, according to the program, the signals coming from the sensor (8).
  • the said rotation of lever (7) brings about a corresponding lowering or lifting of its surface (70) relative to the operating plane (21) of belts (2), that is, a decrement, respectively, an increment of diameter of said circumference (C1).
  • the programmable unit (UE) operates the actuator (71) so as to rotate the tightener (7) upwards (U) as the warp increases, that is, as the useful number of revolutions of rod (5) becomes larger.
  • This number is a data transmitted in a conventional manner to the unit (UE) via an encoder associated with the shaft (50) of rod (5).
  • each tightener is made up of a lever having its fulcrum, within a median portion thereof, on the structure (1) of the warper, and at the height of the front pulley (20) of the corresponding belt (2).
  • the rear end of the lever is connected to the stem of a hydraulic actuator (71') which drives it into rotation about the fulcrum (72').
  • Said actuator (71') is fed by a pump (710) through a valve (711) which receives the hydraulic fluid from the pump (710) and delivers it to the actuator (71').
  • the said valve (711) is associated with the unit (UE) via an interface of traditional type (712).
  • the same interface (712) is intended for connecting the unit (UE) to the feed circuit (713) of an electric motor (714) which operates the pump (710).
  • the actuator (71') is solid to the warper's structure (1).
  • the example shown in Figs. 5 and 6 provides, likewise that of Fig. 4, for the use of more hydraulic actuators which are associated with the unit (UE) and a hydraulic pump (710) and are attached to the structure (1).
  • each actuator is intended for moving a body (7') connected to the respective stem and supported by a guide fork (700) solid to said structure (1).
  • the said body (7') makes up the tightener in this example of embodiment of the invention.
  • the initial position of tighteners (7; 7') can be chosen, for example, so that, upon starting the machine, the threads will result already disposed on a cylindrical surface (the one delimited by surfaces 70 of the same tighteners) having a radius larger than said circumference (C2) in order to have the possibility of reducing the pressure thereof from the first moment of this step.
  • the actuators (71; 71') will be activated for rotating the tighteners (7; 7') downwards, so that the surface delimited by the active surfaces (70) of tighteners (7; 7') will have a radius smaller than that of circumference (C2).
  • An operating method according to the invention includes therefore the following steps:
  • the presetting said pressure value can be made on the basis of statistics or experience or requirements from the producer or user.
  • the thus determined pressure values will correspond to the operative positions of the tighteners, which positions are stored in a conventional way by the user or manufacturer into the memory of the central unit (UE).
  • the tension of the threads (F) can be adjusted, as above indicated, by depositing them, at least partially, onto a substantially cylindrical surface having a diameter other than that of the surface defined by the operating planes (21) of belts (2), should the said pressure be higher or lower than a preset limit value.
  • the said sensed or predetermined pressure values can be made to vary in relation to the typology of the yarn (count, material or other) employed each time for the formation of the warp, that is, in relation to any difference between yarns of diverse typology as regard to their behaviour during the formation process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Warping, Beaming, Or Leasing (AREA)
  • Looms (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Saccharide Compounds (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
EP20010830793 2001-01-09 2001-12-21 Verbesserte Schärmaschine und Schärverfahren Expired - Lifetime EP1231306B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITFI20010006 2001-01-09
ITFI20010006 ITFI20010006A1 (it) 2001-01-09 2001-01-09 Orditoio perfezionato ad un metodo di orditura
ITFI000006 2001-01-26

Publications (3)

Publication Number Publication Date
EP1231306A2 true EP1231306A2 (de) 2002-08-14
EP1231306A3 EP1231306A3 (de) 2004-01-07
EP1231306B1 EP1231306B1 (de) 2006-08-30

Family

ID=11442032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010830793 Expired - Lifetime EP1231306B1 (de) 2001-01-09 2001-12-21 Verbesserte Schärmaschine und Schärverfahren

Country Status (3)

Country Link
EP (1) EP1231306B1 (de)
DE (1) DE60122663T2 (de)
IT (1) ITFI20010006A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312707A2 (de) * 2001-11-06 2003-05-21 Age s.n.c. di Vieri A. & C. Schärmaschine und Schärverfahren
EP1882762A1 (de) * 2006-07-26 2008-01-30 KARL MAYER TEXTILMASCHINENFABRIK GmbH Musterkettenschärmaschine und Verfahren zum Erzeugen eines Musterkettbaumes
EP3078770A1 (de) * 2015-04-10 2016-10-12 Karl Mayer Textilmaschinenfabrik GmbH Musterkettenschärmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5603146A (en) * 1994-12-23 1997-02-18 Karl Mayer Textilmaschinenfabrik Gmbh Arrangement and process for the production of short warps
EP0832998A1 (de) * 1996-10-31 1998-04-01 Suzuki Warper Ltd. Vorrichtung zum schnellen Einbringen von Faden in die Kanäle von mit einem Faden nach Fadensystem arbeitende Zettelmaschine
EP1209265A2 (de) * 2000-09-11 2002-05-29 Suzuki Warper Ltd. Musterzettelmaschine mit kurzen Zuführbändern

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5603146A (en) * 1994-12-23 1997-02-18 Karl Mayer Textilmaschinenfabrik Gmbh Arrangement and process for the production of short warps
EP0832998A1 (de) * 1996-10-31 1998-04-01 Suzuki Warper Ltd. Vorrichtung zum schnellen Einbringen von Faden in die Kanäle von mit einem Faden nach Fadensystem arbeitende Zettelmaschine
EP1209265A2 (de) * 2000-09-11 2002-05-29 Suzuki Warper Ltd. Musterzettelmaschine mit kurzen Zuführbändern

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312707A2 (de) * 2001-11-06 2003-05-21 Age s.n.c. di Vieri A. & C. Schärmaschine und Schärverfahren
EP1312707A3 (de) * 2001-11-06 2003-12-17 Age s.n.c. di Vieri A. & C. Schärmaschine und Schärverfahren
EP1882762A1 (de) * 2006-07-26 2008-01-30 KARL MAYER TEXTILMASCHINENFABRIK GmbH Musterkettenschärmaschine und Verfahren zum Erzeugen eines Musterkettbaumes
JP2008031620A (ja) * 2006-07-26 2008-02-14 Karl Mayer Textil Mas Fab Gmbh 柄経糸用整経機および柄経糸ビームを製造するための方法
EP3078770A1 (de) * 2015-04-10 2016-10-12 Karl Mayer Textilmaschinenfabrik GmbH Musterkettenschärmaschine
JP2016199840A (ja) * 2015-04-10 2016-12-01 カール マイヤー テクスティルマシーネンファブリーク ゲゼルシャフト ミット ベシュレンクター ハフツングＫａｒｌ Ｍａｙｅｒ Ｔｅｘｔｉｌｍａｓｃｈｉｎｅｎｆａｂｒｉｋ Ｇｅｓｅｌｌｓｃｈａｆｔ Ｍｉｔ Ｂｅｓｃｈｒａｎｋｔｅｒ Ｈａｆｔｕｎｇ 部分整経サンプリング機
TWI643990B (zh) * 2015-04-10 2018-12-11 德商卡爾 梅耶紡織機械有限公司 區段經紗取樣機

Also Published As

Publication number Publication date
EP1231306B1 (de) 2006-08-30
EP1231306A3 (de) 2004-01-07
DE60122663T2 (de) 2007-10-04
ITFI20010006A1 (it) 2001-04-09
DE60122663D1 (de) 2006-10-12

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