US3360213A - Winding machine - Google Patents

Winding machine Download PDF

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Publication number
US3360213A
US3360213A US512081A US51208165A US3360213A US 3360213 A US3360213 A US 3360213A US 512081 A US512081 A US 512081A US 51208165 A US51208165 A US 51208165A US 3360213 A US3360213 A US 3360213A
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US
United States
Prior art keywords
thread
probe
voltage
winding
machine
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 - Lifetime
Application number
US512081A
Other languages
English (en)
Inventor
Hetzel Max
Fossard Remy
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.)
Centre Electronique Horloger SA
Original Assignee
Centre Electronique Horloger SA
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 Centre Electronique Horloger SA filed Critical Centre Electronique Horloger SA
Application granted granted Critical
Publication of US3360213A publication Critical patent/US3360213A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic 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
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up 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
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/24—Surfaces movable automatically to compensate for variation in tension
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/094—Tensioning or braking 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
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/23—Capacitive detectors, e.g. electrode arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/13—Actuating means linear magnetic, e.g. induction motors
    • 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

  • a machine for winding a thread having a bobbin on which the thread is to be wound; a motor connected to the bobbin for driving the same; means for regulating the mechanical tension on the thread which include a braking device for braking the thread; a device electrically respon- I sive to the mechanical tension on the thread; and electronic means controlled by the electrically responsive device controlling the braking device; the electrically responsive device comprising a capacitor having two plates adapted to be connected to a source of alternating voltage;
  • the probe being connected to the electronic means, the electronic means controlling the braking device according to the capacitive voltage on the probe.
  • thread should not be limited to any particular material, and should include anything having threadlike dimensions.
  • the threads can be made of textiles, or of synthetics such as nylon, or of metal (wire), or of any other suitable material.
  • machines for winding threads which comprise a device for automatically regulating the tension on the thread by means of a sensor operated by the thread so as to avoid non-uniform winding or breaking of the thread.
  • a device for automatically regulating the tension on the thread by means of a sensor operated by the thread so as to avoid non-uniform winding or breaking of the thread.
  • Such a device is absolutely necessary when thin threads having a diameter less than 0.06 mm. must be rapidly wound.
  • the thread acts on the end of an oscillating arm the other end of which has a mag- Y netic armature moving between the poles of a double electro-magnet thus causing an asymmetrical condition between the two magnetic fluxes.
  • the thread is mechanically braked by an electro-magnetic device.
  • the free end of alever acts on either an electric contact or a resistance column or on the magnetic circuit of an electromagnet.
  • Such detecting devices have a relatively considerable inertia which cuts down the winding speed and are for the most part, subject to disturbing mechanical oscillathe mechanical tension on the thread, which device operates with little inertia.
  • Another object of this invention is to provide a machine of the character described and having an electrically responsive device comprising two plates of a condenser linked to the terminals of a source of alternating voltage and an at lleast partially conductive wire, elastically stressed, insulated from ground, electrically linked to an amplifier circuit and supporting the thread to be wound, said partially conductive wire moving between the plates of the condenser under the effect of variations in tension of the thread to be wound and transmitting to the amplifier variations in the electric field between the plates, in a manner similar to that of a probe so as to control a braking device.
  • FIGURE 1 is a plan view and FIGURE 2 is a side view of the embodiment shown on FIGURE 1.
  • FIGURE 3 is a schematic representation of the invention.
  • FIGURE 4 shows the electric circuit for the assembly of the invention.
  • FIGURE 5 is a graph showing the functioning of the machine.
  • FIGURE 6 is a view similar to FIGURE 1 for another embodiment of the invention, which view is turned around by relative to FIGURE 1.
  • FIGURES 1 and 2 show a winding machine which comprises a horizontal base 1 on which is provided a support for spool 2 which is the feed source for the thread. Thread 3 which unwinds from this spool 2 winds on spool 4 which is rotated by motor 5 and passes through two felt shoes 6 and 7 which partially brake the thread. The latter is then guided by wheel 8 which freely rotates on wire 9. The latter is supported by felt supports 10 and 11 and its tension is controlled by screw 12 to modify the deformation of spring 13 which is coaxial with this wire. Index 14 which moves with respect to graduated scale 15 is secured to screw 12. Two electrodes 16 and 17 are mounted above and below Wire 9. An electronic unit 18 is electrically connected to each of these electrodes and to wire 9.
  • An arm 19 kinematically linked to motor 5 controls the movement of thread 3 to ensure the correct filling of coil 4.
  • the electronic unit 18 is also linked to an electro-magnetic transducer.
  • the latter comprises a fixed magnet 21, a mobile armature 22 to which is fixed an energizing coil 33 and which holds the felt shoe 6.
  • the shoe 7 is borne by a bridge 23 which is unitary with the framework of the machine.
  • the electronic unit 18 is represented by the circuit diagrams of FIGURES 3 and 4 and comprises an LC oscillator 24 which gives a voltage of v. at 80 kc./s. This voltage is applied to electrodes 16 and 17.
  • Wire 9 serves as a probe, the charge voltage of which results from the capacitive effect, and depends on the distances of this wire from electrodes 16 and 17.
  • This voltage is amplified by a two step amplifier with resonating circuit 25, and rectified by rectifier 30.
  • an RC filter 26 eliminates the 80 kc./s. component and the harmonics so as to allow the passage of only the direct current coming from rectifier 30.
  • the outlet voltage of 26 is applied to a comparitor 27 at the same time as a reference voltage x coming from source 28.
  • the signal obtained at the exit to the comparitor is then power amplified by direct current amplifier 29, then applied to winding 33 of transducer 20, 22 to modify the braking exerted by felt shoes 6 and 7 on thread 3.
  • the thread 3 to be wound is first manually inserted between brake shoes 6 and 7, then on the insulating wheel 8, then on the guide 19 and then secured tothe core of bobbin 4 (FIGURES 1 and 2).
  • the two sections of the thread 3 (which may for example, be a copper wire) located on each side of the wheel 8 exert on the latter two equal and divergent forces of which the resultant force is balanced by the reaction of the steel wire of the probe 9.
  • This force system is controlled by means of screw 12 acting on spring 13 in such a way that when the machine is at rest, the probe is located near electrode 16.
  • the tension on this steel wire 9 is read then on scale 15.
  • the alternating voltage of 100 v. provided by oscillator 24 is distributed symmetrically with respect to the ground potential on electrodes 16 and 17.
  • Probe 9 positioned between these electrodes constitutes an electrode which capacitively adds the voltages received from electrodes 16 and 17.
  • the voltage of 16 being opposite to that of 17, the probe 9 measures a difference between the capacitive voltages coming from 16 and 17.
  • the position of rest of probe 9 is very near electrode 16 where it obtains an A.C. voltage having a maximum of 50 v.
  • the capacitive voltage decreases and reaches zero when the probe is located at equal distances on electrodes 16 and 17.
  • the passing in the lower half causing a displacement of 180 which would have to be detected by suitable means.
  • the voltage of probe 9 thus varies according to the position it occupies between electrodes 16 and 17 and, consequently, according to the pull exerted on thread 3.
  • the voltage of probe 9, once amplified, rectified and filtered is applied to a comparitor circuit 27 at the same time as a reference to voltage of at least 3 v. coming from source 28 composed of the voltage divider consisting of resistances 31 and 32.
  • the voltage coming from the comparitor is applied to the terminals of a DC power amplifier 29 the last stage of whose charge impedance is the winding 33 of the transducer.
  • FIGURE shows diagrammatically the functioning of the machine.
  • the probe 9 is shown in its rest position near 5 electrode 16.
  • the diagram shows on its abcissa the movements of the probe expressed in units of length and ordinates are given showing the current intensity in the winding of the transducer.
  • the result is a curve 39 showing the sensitivity of the machine.
  • probe 9 When the mechanical tension on thread 3 is insufiicient, probe 9 is near electrode 16. The current passing through the transducer is then maximum and brakes thread 3. The probe then moves toward electrode 17 to occupy the operating zone represented by hatched lines. In this zone, a small movement of the probe causes a strong variation in the intensity of the current in the transducer and maintains practically constant the braking efiect. Finally, when the tension of the thread becomes too strong, probe 9 comes even closer to electrode 17 and the current in the transducer becomes zero thereby eliminating all braking effect.
  • the present device can employ a simple electromagnet having a moving armature.
  • the oscillator, the amplifier circuits, the filtering and comparitor circuits can assume other forms which are well known.
  • the felts and 11 which brake the axial movement of probe 9 can be replaced by supports on the rigid bodies and the probe can be provided with a braking wing moving in a viscous liquid.
  • FIGURE 6 an embodiment of the invention which includes a viscous liquid type dampening means.
  • probe 9 and spring 13 dip in a receptacle which is open at its top and in the bottom of which is placed a positioning screw 12.
  • the other elements are exactly as described for the embodiment of the previou figures.
  • the viscous contents of the receptacle dampen the vibrations of the probe and of the spring.
  • this machine ensures, the winding of even the finest threads both conductive and non-conductive on bobbins of even non-circular crosssection.
  • a machine for winding a thread comprising:
  • said electrically responsive device comprising:
  • a machine as claimed in claim 1 including means for guiding the thread during winding.
  • a machine as claimed in claim 2 in which the probe 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
US512081A 1964-12-09 1965-12-07 Winding machine Expired - Lifetime US3360213A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1589064A CH427443A (fr) 1964-12-09 1964-12-09 Machine à bobiner

Publications (1)

Publication Number Publication Date
US3360213A true US3360213A (en) 1967-12-26

Family

ID=4412819

Family Applications (1)

Application Number Title Priority Date Filing Date
US512081A Expired - Lifetime US3360213A (en) 1964-12-09 1965-12-07 Winding machine

Country Status (4)

Country Link
US (1) US3360213A (fr)
CH (1) CH427443A (fr)
DE (1) DE1499005A1 (fr)
FR (1) FR1459523A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8997669B1 (en) * 2014-10-16 2015-04-07 Handi Quilter, Inc. Thread tensioner for a sewing machine
US9394639B2 (en) 2014-10-16 2016-07-19 Handi Quilter, Inc. Motorized thread tensioner for a sewing machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523440A (en) * 1982-10-08 1985-06-18 Institut Textile De France Regulating device for the length of thread absorbed by a knitting machine
FR2538419A1 (fr) * 1982-12-28 1984-06-29 Inst Textile De France Dispositif de regulation de la longueur de fil absorbee par un metier a tricoter
DE102010060767A1 (de) 2010-08-18 2012-02-23 Schunk Sonosystems Gmbh Verfahren und Anordnung zum Verschweißen von elektrischen Leitern

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022025A (en) * 1959-08-03 1962-02-20 Tensitron Inc Tension control for filamentary materials
US3113746A (en) * 1961-12-29 1963-12-10 Western Electric Co Strand tension control apparatus
US3146968A (en) * 1961-07-26 1964-09-01 Micafil Ag Electro-magnetically controlled device for maintaining constant tension on thin wires

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022025A (en) * 1959-08-03 1962-02-20 Tensitron Inc Tension control for filamentary materials
US3146968A (en) * 1961-07-26 1964-09-01 Micafil Ag Electro-magnetically controlled device for maintaining constant tension on thin wires
US3113746A (en) * 1961-12-29 1963-12-10 Western Electric Co Strand tension control apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8997669B1 (en) * 2014-10-16 2015-04-07 Handi Quilter, Inc. Thread tensioner for a sewing machine
US9394639B2 (en) 2014-10-16 2016-07-19 Handi Quilter, Inc. Motorized thread tensioner for a sewing machine

Also Published As

Publication number Publication date
FR1459523A (fr) 1966-11-18
DE1499005A1 (de) 1971-06-03
CH427443A (fr) 1966-12-31

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JPH05278943A (ja) 巻線のテンション制御装置