EP0216121A1 - 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
EP0216121A1
EP0216121A1 EP86111338A EP86111338A EP0216121A1 EP 0216121 A1 EP0216121 A1 EP 0216121A1 EP 86111338 A EP86111338 A EP 86111338A EP 86111338 A EP86111338 A EP 86111338A EP 0216121 A1 EP0216121 A1 EP 0216121A1
Authority
EP
European Patent Office
Prior art keywords
thread
traversing
guide members
nozzles
gap
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
EP86111338A
Other languages
German (de)
English (en)
Other versions
EP0216121B1 (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 34 36 455 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.
  • tension threads arise.
  • 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 output, which is caused by 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 for the purpose of deflection practically does not come into contact with any solid parts in the pre-curtain 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 l3 formed as a movable thread guide of a main traversing device 14.
  • Thread guide l2 and traversing device l4 are carried by a support column l5.
  • a hidden mandrel is provided, which is used to wind up the thread ll to form a cheese 16.
  • the mandrel is carried by a machine part l7 and is adjustable in the horizontal direction depending on the bobbin diameter, so that its distance from the traversing device l4 remains constant during the winding process.
  • the traversing means l3 which moves back and forth during operation, as indicated by the two arrows l8, brings about the desired, crosswise depositing of the thread ll on the bobbin l6.
  • the maximum, lateral movements of the iridescent thread ll are shown by the dash-dotted lines l9.
  • 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. It has two guide members 2l, 22, which are formed by two parallel, elongated plates, which together form a gap 23. Nozzles 24 and 25 are present in the plate 2l. 2, to the right, the nozzles 25 are directed to the left. The nozzles 24, 25 extend from the inside of the guide member 2l 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.
  • the blowing direction of both the nozzles 24 and the nozzles 25 takes place at an acute angle to the Longitudinal extension of the gap 23. Compressed air is present in an air line 26. Air is optionally supplied to the nozzles 24, 25 by opening and closing the controllable valves 27.
  • Air is optionally supplied to the nozzles 24, 25 by opening and closing the controllable valves 27.
  • the nozzles 24 are actuated, the thread 11 extending transversely to the elongated plates 2l, 22 and which is guided by the plates 2l, 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 around its axis. This runs from the thread guide l2 through the gap 23 between the guide members 2l, 22 and transversely to them and reaches the bobbin l6 via the traversing means l3. During the winding process, the traversing means l3 moves back and forth in the direction of the arrows l8. This results in a cross winding, or a cross coil is formed.
  • the back and forth movements of the traversing means l3 take place at high speed and are of high frequency. Particularly in the area of the outermost positions l9 of the thread ll, it is exposed to very large decelerations and accelerations and strong fluctuations in tension.
  • the prechangling device 20 supports the traversing movement of the thread 11 generated by the main trapping device 14 and effects a compensation of these fluctuating tensions of the thread 11. In this way, it allows a more even passage through the Thread ll through the traversing means l3 and thus a more precise placement of the thread.
  • the right-hand nozzles 24 are essentially actuated in rhythm with the lateral movements of the device l3 to the right, and essentially the left-hand nozzles 25 when the traversing means l3 are moved to the left.
  • 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 depending 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, depending on the direction of movement and position of the traversing means l3, as indicated schematically by the dashed line, supplies the command device 28, which uses these signals to send commands to the valves 27 to operate them.
  • the control means 30 must depend on the rotational movement, ie on the number of revolutions and from the angular Depending on the position of the grooved roller, provide signals.
  • 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 3l, 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 exemplary 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 also forms 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 result is in the gap 23 an air distribution which is symmetrical with respect to the central plane between the guide members 35 and 36, 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 ll into 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)
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
CH375985 1985-08-30
CH3759/85 1985-08-30

Publications (2)

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

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2950068A (en) * 1955-12-05 1960-08-23 American Enka Corp Traversing mechanism for winding machine
AT249559B (de) * 1962-11-07 1966-09-26 Onderzoekings Inst Res Vorrichtung zum Aufwickeln eines Garnes
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
DE2040479B2 (de) * 1970-08-14 1975-08-28 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal Kreuzspuleinrichtung
DD118840A1 (fr) * 1975-04-01 1976-03-20
DE2735974A1 (de) * 1976-09-20 1978-03-23 Owens Corning Fiberglass Corp Verfahren und vorrichtung zum aufwickeln von faeden auf einen rotierenden spulkopf
DE3436455A1 (de) * 1983-10-08 1985-04-18 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Aufspulmaschine

Family Cites Families (4)

* 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
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2950068A (en) * 1955-12-05 1960-08-23 American Enka Corp Traversing mechanism for winding machine
AT249559B (de) * 1962-11-07 1966-09-26 Onderzoekings Inst Res Vorrichtung zum Aufwickeln eines Garnes
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
DE2040479B2 (de) * 1970-08-14 1975-08-28 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal Kreuzspuleinrichtung
DD118840A1 (fr) * 1975-04-01 1976-03-20
DE2735974A1 (de) * 1976-09-20 1978-03-23 Owens Corning Fiberglass Corp Verfahren und vorrichtung zum aufwickeln von faeden auf einen rotierenden spulkopf
DE3436455A1 (de) * 1983-10-08 1985-04-18 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Aufspulmaschine

Also Published As

Publication number Publication date
CN86104742A (zh) 1987-02-25
DE3662677D1 (en) 1989-05-11
EP0216121B1 (fr) 1989-04-05
US4712746A (en) 1987-12-15
JPS6251569A (ja) 1987-03-06

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