EP2630068B1 - Cutting device of a textile yarn during its feeding to an operating device - Google Patents

Cutting device of a textile yarn during its feeding to an operating device Download PDF

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Publication number
EP2630068B1
EP2630068B1 EP20110785082 EP11785082A EP2630068B1 EP 2630068 B1 EP2630068 B1 EP 2630068B1 EP 20110785082 EP20110785082 EP 20110785082 EP 11785082 A EP11785082 A EP 11785082A EP 2630068 B1 EP2630068 B1 EP 2630068B1
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EP
European Patent Office
Prior art keywords
yarn
cutting
electromagnetic means
electromagnet
spring
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.)
Active
Application number
EP20110785082
Other languages
German (de)
English (en)
French (fr)
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EP2630068A1 (en
Inventor
Tiziano Barea
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.)
BTSR International SpA
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BTSR International SpA
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Publication date
Application filed by BTSR International SpA filed Critical BTSR International SpA
Publication of EP2630068A1 publication Critical patent/EP2630068A1/en
Application granted granted Critical
Publication of EP2630068B1 publication Critical patent/EP2630068B1/en
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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
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
    • 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
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/71—Arrangements for severing filamentary materials
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2022—Initiated by means responsive to product or work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/727—With means to guide moving work
    • Y10T83/739—Positively confines or otherwise determines path of work

Definitions

  • the present invention relates to a textile yarn cutting device in accordance with the introduction to the main claim.
  • a textile yarn cutting device is known to be usually provided in the line feeding the yarn to an operator element, which can be an actual textile machine or a member which then feeds the yarn to such a machine. It usually comprises a blade member (or simply "blade") associated with a support element subjected to actuator means which drive it (and with it the blade) within a casing housing the device. This latter comprises a portion in which the yarn slides during its feed.
  • the support element is able to assume two working positions; in a first position this element maintains the blade spaced from the portion in which the yarn slides, and from the yarn itself, whereas in a second position this element brings the blade into contact with the yarn to hence cut it.
  • the mechanical devices as known from US 3,854,356 , comprise a spring associated with the support element and a clamp, internal to the housing, arranged to retain this latter in the first working position.
  • This clamp is associated with an electromagnetically operated trigger; by operating the trigger the clamp is opened and the spring brings the support element into its second working position to hence achieve yarn cutting.
  • This mechanical device is of particularly large bulk and generally requires manual resetting.
  • Magnetic devices comprise a spring which acts on the support element to maintain it in its first working position. An electromagnet then brings this element into the second position to cut the yarn.
  • This solution presents a very high electrical consumption related to the need to energize the electromagnet and maintain the support element in the cutting position (this consumption can become considerable in a textile machine having a plurality of cutting devices corresponding to the number of yarns worked).
  • US3132407 describes a cutting mechanism to be used in the textile field within a yarn cleaner used for removing slubs or other yarn irregularities.
  • This known solution comprises electromagnetic circuit means having a pair of spaced-apart poles, a movable cutting member positioned in proximity to the material to be cut, and a permanent magnet arranged to move between the poles following activation of the electromagnet and operationally associated with said cutting member. When in its rest position, said magnet is in a position of minimum distance from one of these poles.
  • a measurement capacitor formed from conductive plates inserted in an insulating block with which the ferromagnetic poles of the magnetic circuit are associated. A yarn passes between these plates such as to vary the capacitance of the capacitor as a function of the variation in yarn diameter.
  • a control circuit measures the capacitance variation and provides a control signal at its terminals. This signal is applied to magnetic windings positioned about a metal member connecting the poles together. This creates opposing polarities in these latter, the result of which is a repulsion of the permanent magnet from one of these latter and its consequent movement with the associated cutting member. It hence acts on the yarn, which is cut.
  • CH699425 describes a device for cutting a yarn in a yarn cleaner which monitors and ensures yarn quality in spinning machines and winding machines in the textile industry.
  • the device comprises an electromagnetic control member with a cylindrical moving coil, a movable solenoid member carrying a cutting element and a magnetic yoke, the coil, the movable member and the yoke being disposed such that the magnetic field generated by the control member closes through and returns via the control member and the yoke.
  • a hole in the yoke for guiding and retaining the movable member and a part of this latter positioned within the hole have different shapes such that the space formed between them is not constant along the circumference of said member; this space is formed such that the magnetic field acting radially on the movable member is nullified.
  • a spring is provided for returning the movable member to its rest position after cutting the yarn.
  • the movement of the cutting element is obtained only by virtue of the magnetic force developing within the described device. It follows that to increase the cutting force (for example on the basis of the yarn type on which it acts) the dimensions of those device parts generating the magnetic field (and the relative force) have to be increased, with consequent increase in the dimensions of the entire device described in the Swiss patent.
  • Swiss patent does not describe the use of a spring as a member for moving the cutting element, but only for returning this latter to its rest position after acting on the yarn (and spaced from it).
  • An object of the present invention is to provide a cutting device which represents an improvement compared with known solutions.
  • a particular object of the invention is to provide a cutting device of the stated type which is extremely compact and has a very low and virtually zero energy consumption.
  • Another object is to provide a device of the stated type which is extremely simple and of low cost.
  • a further object is to provide a device of the stated type which also enables e blade member to be automatically reset.
  • a device is indicated overall by 1 and comprises a housing 2 comprising a base 3, lateral shoulders 4 and an end wall 5 connected to said shoulders at one of their ends 6 and carrying an anvil member 5A.
  • each shoulder comprises a recess 10, preferably provided with ceramic thread guides; the recesses 10 of the shoulders 4 are mutually parallel to hence be able to receive a yarn F fed to a textile machine or to another user element in a line feeding the yarn to said machine (such as a member feeding the yarn to this machine).
  • the base 3 presents holes 11 enabling the device 1 to be fixed by screws, rivets or the like (not shown) on a textile machine in a suitable position.
  • This base carries a bistable linear electromagnet 12 comprising an electromagnet 12A fixed to the inside of a U structure 13 fixed to said base in any known manner.
  • This structure 13 which is metallic, presents in proximity to each of the free ends 14A of its parallel arms 14 (also parallel to the electromagnet 12), on a side thereof internal to the structure 13, a permanent magnet 16 positioned on the side of a cylindrical body 17 rigid with the bistable electromagnet and resting on a wall 18 rigid with the ends 14A of said arms.
  • This wall is holed to enable passage of a support element 20 for a blade member or simply blade 21 fixed to a first end 22 of said movable element 20. The second end of this latter is inserted into the bistable magnet 12 and cooperates with its components, which are known and therefore not described.
  • a compression spring 25 is present on the element 20 between its widened first end 22 and the wall 18 (resting on the end 22 and the wall 18) to propel said element 20 from the wall 18 towards the anvil member 5A when the element 12 is suitably powered.
  • This powering advantageously and preferably takes place under the control of a control unit (not shown) which enables said powering to take place via an electric feed cable 28. Direct current pulses are fed through this latter to power said electromagnet.
  • the element 20 is of non-magnetized magnetic material and carries the blade 21 fixed to its first end in any manner.
  • the device 1 is used in a line feeding yarn F to a textile machine or to a control member for this feed (or feeder).
  • the movable element 20 When in the rest position ( Figure 3 ) or prior to the working position, the movable element 20 is maintained spaced from the wall 5 and from the anvil member 5A by the action of the magnetic field, generated by the permanent magnets 16, which closes at the element 20 via the structure 13.
  • the field generated by the permanent magnets 16 overcomes the (mechanical) spring force in order to maintain the movable element 20 in the first position without any current having to be applied to the electromagnet 12; all this is hence achieved without energy consumption with evident advantages when using a plurality of devices 1 in a textile machine operating on a correspondingly large plurality of yarns, such as a knitting machine.
  • a sort of magnetic trigger is hence achieved with can be activated by a small force (that generated by the electromagnet); in fact, on powering the electromagnet a large force is released (that generated by the spring) to obtain movement of the element 20 and the action of the of the blade 21 on the corresponding yarn.
  • bistable linear electromagnet defined by the magnet 12A, the structure 13 and the permanent magnets 16
  • a cutting device to be achieved which is of compact dimensions, simple and of quick action on the yarn. This enables its optimal use on textile machines operating on a large number of yarns, with each of which a corresponding cutting device can be associated. This is achieved by virtue of the compactness of each of these devices.
  • devices with the same basic structure comprising the electromagnet 12 (as aforestated) and with the same movable element 20 carrying the blade 21, can be used for acting on different yarns of different type and cross-section, by applying the necessary cutting force.
  • This is easily achievable by using a spring 25 with a suitable elastic characteristic chosen on the basis of its use, the spring being the only member which moves the blade 21 towards the yarn and which defines the intervention force of this blade on the yarn.
  • the electromagnet makes it possible to be controlled such as not only to neutralize the field generated by the permanent magnets, but also to be added to said field in order to again reset the cutter, hence returning the movable element 20 from the cutting position to the rest position.
  • the device 1 can also be provided with an electronic circuit enabling it to communicate via a communication bus with a remote control unit or with sensors, also connected to the same bus.
  • This control unit is able to control yarn feed by monitoring at least one of its characteristics, such as tension, velocity or shape.
  • the cutter can hence be activated not as the result of a direct electrical command, but as the result of a serial command or signal suitably fed by the control unit or by one of the sensors or control elements, a signal in which are specified the cutting command and the code associated with the particular cutter which is to operate.
  • a plurality of devices 1 and of other members 100 monitoring a yarn characteristic can be identified and defined by corresponding unequivocal identifying codes to hence create a feed control system for a plurality of yarns fed to the textile machine.
  • These devices and monitoring members are connected to a field bus 110 and possibly connected to a control unit 120.
  • Said sensors 100 and said control member 110 hence intervene on the devices 1 on the basis of the data obtained by these members and of the machine operation; by virtue of the code of the cutting devices 1 and of the monitoring members 100, this intervention is precise and enables only that yarn to be cut for which, for example, a feed abnormality is detected.
  • the element 20 could carry a blade 21 such as to retain the yarn after it has been cut. This enables the textile machine operation to be quickly resumed by intervening on the yarn (locked in the cutter and not free along the feed path), for example by re-knotting it to the end already beyond the cutter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Looms (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Sewing Machines And Sewing (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Coiling Of Filamentary Materials In General (AREA)
EP20110785082 2010-10-19 2011-10-11 Cutting device of a textile yarn during its feeding to an operating device Active EP2630068B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2010A001905A IT1402740B1 (it) 2010-10-19 2010-10-19 Dispositivo di taglio di un filo tessile durante la sua alimentazione ad un elemento operatore
PCT/IB2011/002477 WO2012052819A1 (en) 2010-10-19 2011-10-11 Cutting device of a textile yarn during its feeding to an operating device

Publications (2)

Publication Number Publication Date
EP2630068A1 EP2630068A1 (en) 2013-08-28
EP2630068B1 true EP2630068B1 (en) 2014-11-26

Family

ID=43738032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110785082 Active EP2630068B1 (en) 2010-10-19 2011-10-11 Cutting device of a textile yarn during its feeding to an operating device

Country Status (7)

Country Link
US (1) US20130192436A1 (es)
EP (1) EP2630068B1 (es)
JP (1) JP2014500836A (es)
CN (1) CN103167997B (es)
ES (1) ES2530617T3 (es)
IT (1) IT1402740B1 (es)
WO (1) WO2012052819A1 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485046A (zh) * 2013-09-16 2014-01-01 浙江康立自控科技有限公司 纺织机械用切纱器
DE102014113500A1 (de) * 2014-09-18 2016-03-24 Eto Magnetic Gmbh Bistabile elektromagnetische Aktorvorrichtung
CN105565056B (zh) * 2015-12-10 2017-05-03 湖南文理学院 一种纺织机用滚动式电磁裁剪装置
CN106956966A (zh) * 2017-01-21 2017-07-18 慈溪市赛美格针织器材有限公司 一种磁性可调的清纱器及具有该磁性可调清纱器的输纱器
CN107309929A (zh) * 2017-07-24 2017-11-03 望谟县兴旺魔芋产业发展有限责任公司 一种魔芋切片装置
CN111410080B (zh) * 2019-11-07 2022-05-24 杭州博越纺织有限公司 一种基于纺纱机高精度绕线装置
EP4177197A1 (de) * 2021-11-04 2023-05-10 Saurer Intelligent Technology AG Garnreiniger sowie schneideinrichtung für einen garnreiniger
EP4177196A1 (de) * 2021-11-04 2023-05-10 Saurer Intelligent Technology AG Garnreiniger sowie schneidvorrichtung für einen garnreiniger

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Also Published As

Publication number Publication date
WO2012052819A1 (en) 2012-04-26
ES2530617T3 (es) 2015-03-04
CN103167997B (zh) 2014-11-12
EP2630068A1 (en) 2013-08-28
US20130192436A1 (en) 2013-08-01
ITMI20101905A1 (it) 2012-04-20
JP2014500836A (ja) 2014-01-16
CN103167997A (zh) 2013-06-19
IT1402740B1 (it) 2013-09-18

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