GB2043715A - Winding machine - Google Patents

Winding machine Download PDF

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Publication number
GB2043715A
GB2043715A GB7908197A GB7908197A GB2043715A GB 2043715 A GB2043715 A GB 2043715A GB 7908197 A GB7908197 A GB 7908197A GB 7908197 A GB7908197 A GB 7908197A GB 2043715 A GB2043715 A GB 2043715A
Authority
GB
United Kingdom
Prior art keywords
winding
wire
coil
tension
drive
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
GB7908197A
Other versions
GB2043715B (en
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.)
Roose V I
Original Assignee
Roose V I
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
Priority to SE7901963A priority Critical patent/SE448226B/en
Priority to AT171879A priority patent/AT362020B/en
Application filed by Roose V I filed Critical Roose V I
Priority to GB7908197A priority patent/GB2043715B/en
Priority to CH225379A priority patent/CH638753A5/en
Priority claimed from CH225379A external-priority patent/CH638753A5/en
Priority to DE2910396A priority patent/DE2910396C2/en
Priority to FR7907200A priority patent/FR2451880A1/en
Publication of GB2043715A publication Critical patent/GB2043715A/en
Application granted granted Critical
Publication of GB2043715B publication Critical patent/GB2043715B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/04—Apparatus or processes specially adapted for manufacturing resistors adapted for winding the resistive element
    • 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

Abstract

A machine for winding extra-thin wire or other filamentary material comprises spindles (1) adapted to carry a feeding coil (2) and a receiving coil (3), means for rotating the spindles (1), and a tension pick-up (4) of a filament (5) being wound. The means for rotating the spindles (1) is made as separate drives (6), each including a shell (7) of soft-magnetic material, rigidly fastened on the spindle (1), and a winding (8) used to generate a rotating magnetic field around the shell (7). The tension pick-up (4) of the wire (5) has its output coupled to control the drive of the spindle (1) adapted to carry the feeding coil (2) fixed thereon. <IMAGE>

Description

SPECIFICATION Winding machine The present invention relates to winding machines, and more pa rticularly to extra-thin-wire winding machines. The invention can be used for winding extra-thin filamentary materials, i.e. with transverse dimensions below 50 microns. The invention can most advantageously be used in manufacture of wire-wound resistors and in winding of coils of extra-thin insulated wires having micron transverse dimensions.
The invention provides an extra-thin wire winding machine comprising spindles, a feeding and a receiving coil fixed on said spindles, a means for rotating the spindles and a tension pick-up of a wire being wound, its output being coupled with the means for rotating the spindles, wherein, according to the invention the means for rotating the spindles is made as separate drives, each including a shell of soft-magnetic material, rigidly fastened on the spindle, and a winding to generate a rotating magnetic field around the shell, the output of the tension pick-up of the wire being wound being electrically coupled with the drive of the spindle carrying the feeding coil fixed thereon.
Low inertia is attained, owing to the fact that the spindles adapted to carry the receiving and the feeding coils, both fastened thereon, are coupled with the separate drives directly, without any intermediate links. Such a design of the drives provides for a completely uniform rotation of the spindles at any speed within the entire possible range of speeds.
The coupling of the tension pick-up output with the drive of the feeding spindle prevents sagging of the wire being wound when the speed of rotation of the receiving coil is reduced. The electric nature of the coupling ensures the fastest response of the system adjusting the speed of the receiving coil drive to any variation in tension of the wire being wound. All this as a whole provides for a high accuracy of maintaining a given tension.
It is advisable that the shells be made as hollow cylinders. Such an embodiment reduces the inertia of the drives to a minimum.
The invention will be described further, by way of example only, with reference to the accompanying drawing, whose sole Figure shows a schematic representation of an extra-thin-wire winding machine.
The extra-thin-wire winding machine illustrated, for winding wires with transverse dimensions of the order of microns, comprises spindles 1, a feeding coil 2 and a receiving coil 3, fastened on the respective spindles, means for rotating the spindles 1, and a tension pick-up 4 for measuring the tension of a wire 5 being wound. The means for rotating the spindles 1 comprises separate drives 6, each including a shell 7 of soft-magnetic material, rigidly fastened on the spindle 1, and a winding 8 to generate a rotating magnetic field around the shell 7. The shells 7 are made as hollow cylinders, whereby the drives 6 exhibit low inertia.
The tension pick-up4 includes a rocking arm 9, a roller 10, and a variable resistor 11 connected via a feedback amplifier 12 and an autotransformer 13 to the winding 8 of the drive 6 of the feeding coil 2. To provide for reverse winding of the wire 5, the machine comprises a feedback amplifier 14 connected via another autotransformer 13 with the winding 8 of the drive of the receiving coil 2. For the reverse winding, the variable resistor 11 of the tension pick-up 4 should be connected to the amplifier 14. To provide for switching of the variable resistor 11 from the amplifier 12 to the amplifier 14, a switch 15 is included. The windings 8 of the drives 6 are supplied by a transformer 16 connected to the feedback amplifiers 12 and 14. A switch 17 is used for reversing the sense of rotation of each drive 6.
The machine operates as follows. The feeding coil 2 and the receiving coil 3 are fixed on the spindles 1.
The wire 5 from the feeding coil 2 is passed around the roller 10 of the tension pick-up 4 and is fixed on the receiving coil 3. The desired tension of the wire 5 is obtained due to a difference in the torques of the receiving coil 3 and the feeding coil 2. This difference is attained by application of suitable voltages from the autotransformers 13 to the windings 8 of the drives 6. As the voltages are applied to the windings 8 of the drives 6, rotating magnetic fields are built up around these windings and cause the shells 7 of the drives 6, made of soft-magnetic material and having neither slots nor windings, to start rotating. The rotation of the shells 7 is substantially smooth at any speed. This feature of the drives 6 advantageously distinguishes them from any other electric motors whose rotors rotate jerkily at low speeds.The receiving coil 3 and the feeding coil 2, both fastened on the spindles 1 driven by the shells 7 fastened thereon and made as hollow cylinders, have very low inertia, which is favourable to the accurate maintenance of a given tension of the wire 5.
The variation of diameters of the receiving coil 3 and the feeding coil 2 in the course of winding causes a change in the tension of the wire 5. As a result, the rocking arm 9 of the tension pick-up 4 turns and changes the resistance of the variable resistor 11 coupled, via the feedback amplifier 12 and the autotransformer 13, with the drive 6 of the feeding coil 2, thus causing respective variation of the speed and restoration of the wires 5 to the given tension. The purely electric feedback coupling the tension pick-up 4 and the drive 6 operates very quickly, this contributing to the accurate maintenance of the given tension. The use of the tension pick-up 4 to control the drive 6 of the feeding coil 2 prevents sagging of the wire 5 when the speed of rotation of the receiving coil 3 is reduced.
A change in the sense of the winding, required, for example, for winding resistors, is performed by changing the sense of rotation of the receiving coil 3 with the aid of the respective switch 17 switching over the winding 8 of the drive 6 of this coil. The sense of rotation of the feeding coil 2 remains unchanged.
If the reverse winding of the wire 5 from the coil 3 to the coil 2 is required, the variable resistor 11 of the pick-up 4 is switched over from the feedback amplifier 12 to the feedback amplifier 14 by means of the switch 15, and the positions of the switches 17 of the windings 8 of the drives 6 are reversed.
The following three modes of operation of the drives 6 ofthe receiving coil 3 and the feeding coil 2 are possible in the machine, depending Gn the desired tension of the wire 5.
I. The drives 6 ofthe receiving coil 3 and the feed ing coil 2 are switched to rotate in the opposite senses, the torque of the drive 6 of the receiving oil 3 exceeding considerably that of the drive 6 of the feeding coil 2. If the coils 2 and 3 were not intercon nected by the wire 5, they would rotate in the opposite senses. The coils 2 and 3 being interconnected by the wire 5, they rotate in the sense of rotation of the drive 6 of the receiving coil 3, the drive 6 of the coil 2 acting in this case as an electromagnetic brake, whereby the tension of the wire 5 is equal to the difference between the torque of the drive 6 of the receiving coil 3 and the torque of the drive 6 of the feeding coil 2. The tension of the wire 5 can be widely varied by changing the voltage across the winding 8 of the drive 6 of the feeding coil 2.Tensions from decimal fractions of a gramme to the breaking stress ofthe wire 5 can be obtained with this mode of operation of the drives 6.
II. The drives 6 of the receiving coil 3 and the feeding coil 2 are switched to rotate in the same sense, but at different speeds of rotation, the speed of rotation of the drive 6 of the receiving coil 3 being higher than that of the drive 6 of the feeding coil 2. In this case the drive 6 of the feeding coil 2 brakes the drive 6 of the receiving coil 3, producing the tension of the wire 5, which can be varied by changing the voltage across the winding 8 of the drive 6 of the feeding coil 2. Tensions of the order of several tens of miiligrammes and below can be obtained with this mode of operation of the drives 6.
III. The drives 6 of the receiving coil 3 and the feeding coil 2 are switched to rotate in the same sense at the same speed, the tension of the wire 5 being equal to the frictional force acting on the roller 10 of the tension pick- up 4 and equaling fractions of a milligramme.
The machine thus provides for a high accuracy of maintaining a given tension of a wire being wound.
The machine provides for winding of the wire at a tension from fractions of a milligramme to the break- ing stress of the wire being wound. Because of this feature the machine may be used for winding as thin wire as desired. The machine can be employed for winding not only extra-thin wires with micron dimensions, but also thicker wires, and not only wires but also any other filamentary materials, at speeds ranging from 10 - 15 rev/min to 2300 - 2500 revimin. It is simple in design, consists of unified functional assemblies, and is very simple and reliable in service.

Claims (3)

1. Awinding machine comprising a spindle on which a feeding coil is to be fixed, a spindle on which a receiving coil is to be fixed, separate drives for rotating the respective spindles, and a tension pickup for measuring the tension of a filament being wound from the feeding coil onto the receiving coil, each drive including a shell of soft-magnetic material, rigidly fastened on the corresponding spindle, and a winding to generate a rotating magnetic field around the shell, the drive of the feeding spindle being contrjlled by the output of the tension pick-up.
2. Awinding machine as claimed in claim 1, wherein the shells are hollow cylinders.
3. A winding machine substantially as described herein with reference to, and as shown in, the accompanying drawing.
GB7908197A 1979-03-08 1979-03-08 Winding machine Expired GB2043715B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE7901963A SE448226B (en) 1979-03-08 1979-03-05 WINDING MACHINE FOR SEPARATE THIN TRAD
AT171879A AT362020B (en) 1979-03-08 1979-03-07 DRIVING DEVICE FOR A MACHINE FOR WINDING WIRE RESISTORS
GB7908197A GB2043715B (en) 1979-03-08 1979-03-08 Winding machine
CH225379A CH638753A5 (en) 1979-03-08 1979-03-08 Device for winding strand-shaped material
DE2910396A DE2910396C2 (en) 1979-03-08 1979-03-16 Device for fine wire winding
FR7907200A FR2451880A1 (en) 1979-03-08 1979-03-21 DEVICE FOR WINDING WIRES, ESPECIALLY MICROWIRES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7908197A GB2043715B (en) 1979-03-08 1979-03-08 Winding machine
CH225379A CH638753A5 (en) 1979-03-08 1979-03-08 Device for winding strand-shaped material

Publications (2)

Publication Number Publication Date
GB2043715A true GB2043715A (en) 1980-10-08
GB2043715B GB2043715B (en) 1983-01-26

Family

ID=25689921

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7908197A Expired GB2043715B (en) 1979-03-08 1979-03-08 Winding machine

Country Status (1)

Country Link
GB (1) GB2043715B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4530471A (en) * 1981-03-05 1985-07-23 Inoue-Japax Research Incorporated Method of and apparatus for dispensing wire from a wire storage spool
DE4018311A1 (en) * 1990-06-08 1991-12-12 Truetzschler & Co DEVICE FOR CLEANING AND OPENING TEXTILE FIBER MATERIAL, ESPECIALLY COTTON, WITH A ROTATING PIN OR NEEDLE ROLLER ADDED TO A FEEDING DEVICE
EP2306473A1 (en) * 2008-06-27 2011-04-06 Honda Motor Co., Ltd. Wire winding device
US8936209B1 (en) * 2010-05-21 2015-01-20 Glenn Auld Knierim Linear media handling system
CN110911163A (en) * 2019-11-07 2020-03-24 宁波韵升装备技术有限公司 Tensioning device of frameless micro-coil winding machine
US10899575B2 (en) 2015-09-22 2021-01-26 Infinity Physics, Llc Linear media handling system and devices produced using the same
US11878892B2 (en) 2015-09-22 2024-01-23 Infinity Physics, Llc Linear media handling system and devices produced using the same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4530471A (en) * 1981-03-05 1985-07-23 Inoue-Japax Research Incorporated Method of and apparatus for dispensing wire from a wire storage spool
DE4018311A1 (en) * 1990-06-08 1991-12-12 Truetzschler & Co DEVICE FOR CLEANING AND OPENING TEXTILE FIBER MATERIAL, ESPECIALLY COTTON, WITH A ROTATING PIN OR NEEDLE ROLLER ADDED TO A FEEDING DEVICE
EP2306473A1 (en) * 2008-06-27 2011-04-06 Honda Motor Co., Ltd. Wire winding device
EP2306473A4 (en) * 2008-06-27 2011-12-28 Honda Motor Co Ltd Wire winding device
US8936209B1 (en) * 2010-05-21 2015-01-20 Glenn Auld Knierim Linear media handling system
US9624068B1 (en) 2010-05-21 2017-04-18 Infinity Physics, Llc Linear media handling system
US10899575B2 (en) 2015-09-22 2021-01-26 Infinity Physics, Llc Linear media handling system and devices produced using the same
US11878892B2 (en) 2015-09-22 2024-01-23 Infinity Physics, Llc Linear media handling system and devices produced using the same
CN110911163A (en) * 2019-11-07 2020-03-24 宁波韵升装备技术有限公司 Tensioning device of frameless micro-coil winding machine
CN110911163B (en) * 2019-11-07 2021-02-19 宁波韵升装备技术有限公司 Tensioning device of frameless micro-coil winding machine

Also Published As

Publication number Publication date
GB2043715B (en) 1983-01-26

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PCNP Patent ceased through non-payment of renewal fee