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EP0216121B1 - Méthode et dispositif pour former des bobines croisées - Google Patents

Méthode et dispositif pour former des bobines croisées Download PDF

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Publication number
EP0216121B1
EP0216121B1 EP86111338A EP86111338A EP0216121B1 EP 0216121 B1 EP0216121 B1 EP 0216121B1 EP 86111338 A EP86111338 A EP 86111338A EP 86111338 A EP86111338 A EP 86111338A EP 0216121 B1 EP0216121 B1 EP 0216121B1
Authority
EP
European Patent Office
Prior art keywords
thread
traverse
guide members
jets
guide
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.)
Expired
Application number
EP86111338A
Other languages
German (de)
English (en)
Other versions
EP0216121A1 (fr
Inventor
Felix Graf
Ruedi Schneeberger
Georg Symon
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter 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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0216121A1 publication Critical patent/EP0216121A1/fr
Application granted granted Critical
Publication of EP0216121B1 publication Critical patent/EP0216121B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/16—Devices for entraining material by flow of liquids or gases, e.g. air-blast devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/283—Traversing devices driven by pneumatic or hydraulic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method for winding threads into cross-wound bobbins according to the preamble of patent claim 1 and to a device serving this purpose according to the preamble of patent claim 2.
  • German laid-open specification DE 3 436 455 A1 shows a winding machine according to which the deceleration and / or acceleration of the thread movement is reduced in the end regions of the thread cross stroke in the case of the thread moved by a traversing device. In the above-mentioned embodiments, this is done by providing an air cushion or a suitable air jet.
  • the generally known winding devices have the disadvantage that the piece of thread running over the traversing device is not able to completely follow the reciprocating traversing member because of its very high speed.
  • thread tension fluctuations the accuracy of depositing the thread on the bobbin to be wound suffers.
  • beads and so-called tension threads can arise on them.
  • the point of reversal of the thread on the bobbin is also imprecise and the optimal crossing angle is not obtained.
  • prechangging device has the advantage that the risk of derailment of the thread which is always present at the crossing points of the traversing groove of the grooved roller of the main traversing can be practically completely eliminated. Furthermore, there is the advantage of a more uniform tension of the thread to be wound than is the case in the absence of such a device. Prechanging essentially takes over the power, which is due to the accelerations and decelerations of the thread and because of its friction over the entire traversing path, especially in the groove. This means that this power output no longer has to be applied by the main traversing device and the thread placement that takes place is carried out more precisely.
  • Such prechanging devices have rapidly moving mechanical parts and therefore have the disadvantage of being subject to wear during operation. They also exert a friction and scraping effect on the thread. In addition, the thread can get caught or jump out of the groove.
  • the method according to the present invention has the features specified in the characterizing part of claim 1 and the device has the features specified in the characterizing part of claim 2.
  • the invention thus has the advantages that the thread comes into contact practically with no solid parts for the purpose of deflection in the prechangging device and is therefore practically not exposed to damage. It moves in a kind of air cushion in the gap formed by the guide members. There is no need for a solid body for the distraction and therefore only small masses (air) have to be moved. Thus there is practically no wear and tear and no wear of parts for the generation of the traversing movement of the thread. Finally, the thread cannot get caught in the prechangging device.
  • a thread 11 to be wound runs from a fixed thread guide 12 designed as an eyelet to a traversing means 13 designed as a movable thread guide of a main traversing device 14.
  • Thread guides 12 and Chan Yaw device 14 are supported by a support column 15.
  • a mandrel, which is hidden in FIG. 1 by the traversing device 14, is provided, which serves to wind the thread 11 into a cross-wound bobbin 16.
  • the mandrel is carried by a machine part 17 and can be adjusted in a horizontal direction depending on the bobbin diameter, so that its distance from the traversing device 14 remains constant during the winding process.
  • the traversing means 13 which moves back and forth during operation, as indicated by the two arrows 18, causes the desired, crosswise deposition of the thread 11 on the spool 16. To move the traversing means 13, this can be rotated with the helically wound groove Grooved roller can be coupled in a manner known per se. The maximum, lateral movements of the changing thread 11 are shown by the dash-dotted lines 19.
  • a pre-curtain device 20 is also provided. This is drawn on a somewhat larger scale in the cross section of FIG. 2 than in FIG. 1. It has two guide members 21, 22 which are formed by two parallel, elongated plates which together form a gap 23. Nozzles 24 and 25 are present in the plate 21. 2, to the right, the nozzles 25 are directed to the left. The nozzles 24, 25 extend from the inside of the guide member 21 to the surface forming the gap 23, at which they end. They do not protrude from this surface and into the gap 23. They are therefore in no way a hindrance or disturbance for the changing thread 23. Both the nozzles 24 and the nozzles 25 are blown at an acute angle to the longitudinal extent of the gap 23.
  • Compressed air is present in an air line 26.
  • the nozzles 24, 25 are optionally supplied with air.
  • the thread 11 which runs transversely to the elongate plates 21, 22 and is guided by the plates 21, 22 in the gap 23 is moved to the right according to FIG. 2, when the nozzles 25 are actuated to the left.
  • the nozzles are actuated via a command device 28 by actuating the nozzles 27, for example by means of electrical signals via electrical cables 29.
  • the thread 11 is wound up by rotating the bobbin 16 about its axis. In this case, it runs from the thread guide 12 through the gap 23 between the guide members 21, 22 and transversely to the latter and reaches the spool 16 via the traversing means 13. During the winding process, the traversing means 13 moves back and forth in the direction of the arrows 18. This results in a cross winding, or a cross coil is formed.
  • the back and forth movements of the traversing means 13 take place at high speed and are of high frequency. Particularly in the area of the outermost positions 19 of the thread 11, it is exposed to very large decelerations and accelerations and strong fluctuations in tension.
  • the pre-traverse device 20 supports the traversing movement of the thread 11 generated by the main traversing device 14 and compensates for these fluctuating tensions of the thread 11. In this way, it allows the thread 11 to pass through the traversing means 13 more evenly and thus deposit the thread more precisely Thread.
  • the nozzles 24 directed to the right are essentially actuated in rhythm with the lateral movements of the device 13 and, when the traversing means 13 is moved to the left, the nozzles 25 directed essentially to the left are actuated.
  • controls must be provided which enable the use of the air streams to be set precisely as a function of the movement of the traversing means 13. It can prove advantageous to control the air flows not only in terms of time but also in terms of air volume.
  • the command device 28 operates in dependence on the back and forth movement of the traversing thread guide 13. In the exemplary embodiment shown, this is done in such a way that a control means 30 determines the direction and position of the traversing means 13 dependent signals, as indicated schematically by the dashed line, supplies the command device 28, which, on the basis of these signals, issues commands to the valves 27 for their actuation.
  • the control means 30 must from the rotary movement, i.e. provide signals dependent on the number of revolutions and on the angular position of the grooved roller.
  • FIG. 3 An air-operated pre-curtain device that can be used according to the invention is shown in its simplest form in FIG. 3.
  • a thread 11 running essentially perpendicular to the plane of the drawing is in turn passed through a gap 23 present between two plate-shaped guide members 31, 32. It is moved back and forth by air currents generated by the nozzles 33, 34, blowing alternately in one direction and in the opposite direction in the longitudinal direction of the guide members 31, 32.
  • the air quantity and the duration of the air flows are also controlled in this example by means of controllable valves 27.
  • This embodiment of the prechangging device is particularly suitable for producing coils of short stroke length.
  • the embodiment shown in Fig. 4 again has two guide members 35, 36, which have the shape of elongated plates.
  • 35, 36 nozzles are mounted in each of the plates. 4
  • the nozzles 37 are directed to the right and the nozzles 38 to the left.
  • the right side nozzles 39 and the left side nozzles 40 are provided in the plate 36.
  • the blowing direction of these nozzles 37, 38, 39, 40 forms likewise an acute angle with respect to the longitudinal extent of the gap 23.
  • the air flow through the nozzles is in turn regulated by valves, which are not shown in FIG. 4, however.
  • the opposing nozzles 37, 39 or 38, 40 are simultaneously acted upon by air, an air distribution which is symmetrical with respect to the central plane between the guide members 35 and 36 is obtained in the gap 23, which results in an optimally light thread movement.
  • the nozzles arranged one behind the other such as the group of nozzles 37, the group of nozzles 38, the group of nozzles 39 or the group of nozzles 40, can optionally be actuated one after the other like a relay. In this way, a prechangging device of great length and thus for coils of great stroke length can be obtained.
  • the present invention has a further particular advantage if the main traversing device is based on a thread traversing which is known per se and is effected by a grooved roller. In such a case, the thread can erroneously jump out of the groove.
  • the particular advantage now lies in the fact that the case cannot occur in which the thread could jump out of its groove and thread itself into the groove, which would move it in the opposite direction to the direction which the air flow prevailing at that moment in the auxiliary mover 20 corresponds. This is because the air flow in the pre-curtain keeps the thread at a noticeable angle to the groove in the main curtain, which acts in the opposite direction to this air flow.
  • the air flow places the thread in a position in which it lies more or less parallel to the groove, which acts on the thread in the same direction as this air flow. This practically only re-threading the thread 11 in the correct groove is possible and threading into the wrong groove is excluded.
  • the thickness of the gap 23 advantageously between 0.2 mm and 1.0 mm, in particular between 0.3 mm and 0.4 mm and the width of the plates between 2 cm and 5 cm. It should be noted that the thickness and the nature of the thread to be wound must also be taken into account with regard to the thickness of the gap 23.

Landscapes

  • Winding Filamentary Materials (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Claims (11)

1. Procédé pour enrouler des fils en bobines croisées au moyen d'un dispositif de va-et-vient préliminaire (20) et d'un dispositif de va-et-vient principal (14), avec un moyen de va-et-vient mobile (13) qui dirige un fil (11) venant depuis un guide-fil immobile (12), et le dépose sur la bobine (16), caractérisé par le fait que le fil à enrouler (11) se déplace sans contact dans le dispositif de va-et-vient préliminaire (20), situé entre le guide-fil (12) et le dispositif de va-et-vient principal (14), d'une manière perpendiculaire à des membres de guidage (21, 22, 31, 32, 35, 36) s'étendant en longueur et parallèles l'un par rapport à l'autre, à travers une fente (23) formée par ceux-ci, et que, au rythme des mouvements du moyen de va-et-vient (13) du dispositif de va-et-vient principal (14), des courants d'air sont produits entre les membres de guidage (21, 22, 31, 32, 35, 36), s'écoulant dans le sens longitudinal de ceux-ci et étant commandés en ce qui concerne le temps, courants d'air qui s'écoulent en va-et-vient d'une manière alternante sur le parcours complet du mouvement de va-et-vient (19) du fil (11) entre les membres de guidage (21, 22, 31, 32, 35, 36) et, par cela, prennent le fil avec eux.
2. Procédé pour enrouler des fils en bobines croisées au moyen d'un dispositif de va-et-vient préliminaire (20) et d'un dispositif de va-et-vient principal (14), produisant un mouvement de va-et-vient d'un fil à enrouler (11) et disposés après un guide-fil immobile (12), caractérisé par le fait que le dispositif de va-et-vient préliminaire (20) comprend deux membres de guidage (21, 22, 31, 32, 35, 36), s'étendant en longueur et parallèles l'un par rapport à l'autre et formant une fente (23), que le fil à enrouler (11) se déplace sans contact, d'une manière perpendiculaire à ceux-ci, à travers la fente (23), que des buses d'air (24, 25, 33, 34, 37, 38, 39, 40) sont prévues pour produire des courants d'air, dirigés dans les deux directions du sens longitudinal des membres de guidage (21, 22, 31, 32, 35, 36), courants d'air qui existent entre les membres de guidage (21, 22, 31, 32, 35, 36) sur le parcours complet du mouvement de va-et-vient (19) du fil (11) entre les membres de guidage (21, 22, 31, 32, 35, 36), et que des moyens de commande (28, 30) sont prévus pour commander les buses d'air (24, 25, 33, 34, 37, 38, 39, 40) au rythme des mouvements du guide-fil (13) du dispositif de va-et-vient principal (14).
3. Dispositif selon revendication 2, caractérisé par le fait que les buses (24, 25, 37, 38, 39, 40) s'étendent depuis l'intérieur des membres de guidage (21, 22, 35, 36) jusqu'à leurs surfaces, et sont ouvertes en se dirigeant vers la fente (23), et que les directions de soufflage forment un angle aigu par rapport à la direction longitudinale de la fente (23).
4. Dispositif selon revendication 3, caractérisé par le fait qu'au moins les buses (24, 25, 37, 38, 39, 40), qui se trouvent dans la zone balayée par le fil dans son mouvement de va-et-vient (19), ne ressortent pas de la surface vers laquelle elles sont ouvertes.
5. Dispositif selon revendication 2, caractérisé par le fait que chacun des membres de guidage (21, 22, 31, 32, 35, 36) possède la forme d'une plaque longue, et dont une surface latérale de chacune des plaques (21, 22, 31, 32, 35, 36) se font face et qu'elles forment ensemble une fente relativement mince (23).
6. Dispositif selon revendication 5, caractérisé par le fait que l'épaisseur de la fente (23) est comprise entre 0,2 et 1,0 mm, particulièrement entre 0,3 et 0,4 mm.
7. Dispositif selon revendication 2, caractérisé par le fait qu'une buse (33, 34) se trouve à chacune des extrémités côté frontal des membres de guidage (31,32).
8. Dispositif selon revendication 2, caractérisé par le fait que toutes les buses (24, 25) se trouvent dans un membre (21) des membres de guidage (21, 22).
9. Dispositif selon revendication 2, caractérisé par le fait que des buses (37, 38, 39, 40) sont prévues dans les deux membres de guidage (34, 36).
10. Dispositif selon revendication 2, caractérisé par le fait que les buses d'air (24, 25, 33, 34, 37, 38, 39, 40) peuvent être commandées, en ce qui concerne le temps et la quantité d'air, par une commande (28, 30) dont les ordres dépendent de la position du moyen de va-et-vient (13) du dispositif de va-et-vient principal (14).
11. Dispositif selon revendication 10, caractérisé par le fait qu'au moins un groupe de buses agissant dans le même sens de déviation du fil, et disposées les unes derrière les autres (24, 25, 37, 38, 39, 40), est prévu au-dessus de la zone de va-et-vient (19) du fil (11), et où les buses (24, 35, 37, 38, 39, 40) sont actionnables en estafette.
EP86111338A 1985-08-30 1986-08-16 Méthode et dispositif pour former des bobines croisées Expired EP0216121B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3759/85 1985-08-30
CH375985 1985-08-30

Publications (2)

Publication Number Publication Date
EP0216121A1 EP0216121A1 (fr) 1987-04-01
EP0216121B1 true EP0216121B1 (fr) 1989-04-05

Family

ID=4262887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111338A Expired EP0216121B1 (fr) 1985-08-30 1986-08-16 Méthode et dispositif pour former des bobines croisées

Country Status (5)

Country Link
US (1) US4712746A (fr)
EP (1) EP0216121B1 (fr)
JP (1) JPS6251569A (fr)
CN (1) CN86104742A (fr)
DE (1) DE3662677D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0385833U (fr) * 1989-12-22 1991-08-30
CN102723191A (zh) * 2012-06-11 2012-10-10 常熟市常源变压器有限公司 一种变压器线圈用张紧装置
CN111430148B (zh) * 2020-04-15 2021-11-05 宣城沈变变压器有限公司 一种变压器线圈用张紧装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR830773A (fr) * 1937-12-13 1938-08-09 Perfectionnements au bobinage des fils
NL97605C (fr) * 1955-12-05
CH419934A (de) * 1962-11-07 1966-08-31 Onderzoekings Inst Res Verfahren zur Herstellung eines Garnwickels und Vorrichtung zur Durchführung des Verfahrens
CH427589A (de) * 1964-03-09 1966-12-31 Reiter Michael Beweglicher Band- oder Vorgarnführer zum Herstellen von Kreuzwickeln
CH437073A (de) * 1966-04-04 1967-05-31 Mettler Soehne Maschf Fadenführungsvorrichtung mit beweglichem Fadenführer
US3489359A (en) * 1966-12-09 1970-01-13 Leesona Corp Winding machine
US3945581A (en) * 1970-08-14 1976-03-23 Barmag Barmer Maschinenfabrik Aktiengesellschaft High-speed cross-winding device
US3831872A (en) * 1970-11-02 1974-08-27 Monsanto Co Traverse winding apparatus
DD118840A1 (fr) * 1975-04-01 1976-03-20
US4046330A (en) * 1976-09-20 1977-09-06 Owens-Corning Fiberglas Corporation Strand collecting apparatus and method
DE3436455A1 (de) * 1983-10-08 1985-04-18 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Aufspulmaschine

Also Published As

Publication number Publication date
EP0216121A1 (fr) 1987-04-01
US4712746A (en) 1987-12-15
DE3662677D1 (en) 1989-05-11
CN86104742A (zh) 1987-02-25
JPS6251569A (ja) 1987-03-06

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