WO2009018670A1 - Dispositif de coupe d'un corps en forme de fil - Google Patents

Dispositif de coupe d'un corps en forme de fil Download PDF

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Publication number
WO2009018670A1
WO2009018670A1 PCT/CH2008/000259 CH2008000259W WO2009018670A1 WO 2009018670 A1 WO2009018670 A1 WO 2009018670A1 CH 2008000259 W CH2008000259 W CH 2008000259W WO 2009018670 A1 WO2009018670 A1 WO 2009018670A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
yoke
support structure
cutting member
coil
Prior art date
Application number
PCT/CH2008/000259
Other languages
German (de)
English (en)
Inventor
Martin Kuster
Original Assignee
Uster Technologies 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 Uster Technologies Ag filed Critical Uster Technologies Ag
Priority to AT08757252T priority Critical patent/ATE545612T1/de
Priority to EP08757252A priority patent/EP2176156B1/fr
Priority to CN200880103709.7A priority patent/CN101878172B/zh
Priority to JP2010520391A priority patent/JP5152541B2/ja
Publication of WO2009018670A1 publication Critical patent/WO2009018670A1/fr

Links

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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding

Definitions

  • the present invention is in the field of severing filamentary material. It relates to a device for cutting a thread-like, preferably longitudinally moving body according to the preamble of the first claim. You prefer use is in yarn cleaners, as they are common for monitoring and ensuring the yarn quality on spinning or winding machines.
  • yarn cleaners Devices for automatically detecting and cutting out defective yarn sections from a longitudinally moved yarn are referred to in the textile industry as yarn cleaners. They are attached in large numbers to spinning and winding machines for yarns at each spinning or winding unit. Also for cutting other elongate textile structures such as rovings, ribbons, etc. cutting devices are needed.
  • a generic cutting device in which, as in previously known devices of this type, a perpendicular to the longitudinal direction of the longitudinally moved filamentary body movable back and forth cutting blade is provided, which cooperates with a fixed counter-attitude.
  • the cutting blade is moved towards the counter-holding until it bounces on the counter-holding. This causes a cut in the body. Then the cutting knife is moved back to its original position, where it remains until a new cut is due.
  • FIG 1 shows a perspective view of a cutting device 1 ', as it is known from the prior art, such as WO-00/06479 Al.
  • the cutting device 1 ' includes a carrier 10'.
  • a counter-holding or anvil 6 ' is formed in the embodiment of Figure 1 as a part of the carrier 1'.
  • the anvil 6 ' has a hardened surface 60', in front of which a longitudinally moved thread-like body 9, such as here for example a yarn, is moved in the direction of an arrow 90.
  • the cutting blade 5 ' is preferably fixedly connected to the knife holder 51', which in turn here via a releasable positive connection 52 'with a plunger 43' ( Figure 2), which forms an extension of the plunger armature 4 'is connected.
  • a plunger 43' Figure 2
  • the plunger coil 3 ' has turns, which are connected via lines to a control circuit, not shown in this figure, via which the plunger 3' is driven to the cutting blade 5 'to actuate.
  • FIG. 2 essential parts of the cutting device 1 'of Figure 1 are shown. The view is different from that in FIG. 1: While FIG. 1 shows a view from the left front, FIG. 2 shows a view from the right rear. In addition, the view of Figure 2 is partially exposed; In particular, the plunger coil 3 'is not shown, so that a view is given in the space enclosed by the plunger coil 3' interior.
  • a front end 41 'of the plunger armature 4' is conical and can be received by a correspondingly complementary, cylindrical, aligned along a longitudinal axis receiving piece 21 'of the return yoke 2'.
  • the plunger armature 4 ' continues in a plunger 43', which protrudes forward from the yoke 2 'and carries the blade holder 51' and the cutting blade 5 '(not shown in FIG. 2 for the sake of simplicity).
  • the plunger 43 ' has a purely mechanical function; it must not be made of a ferromagnetic material so as not to disturb the magnetic operation of the system described below. It can also be seen a part of a return spring 49 ', which is tensioned during the cutting movement and presses the plunger armature 4' again into the initial position shown in Figure 2 after the cutting operation.
  • a longitudinally moving thread-like body 9 In order to clean a longitudinally moving thread-like body 9 (FIG.
  • the drive of the cutting device is based on the principle of magnetic reluctance.
  • the plunger armature 4 'and the yoke yoke T each consist of a ferromagnetic material. Together they form a ferromagnetic core, which is partially enclosed by the plunger coil 3.
  • the plunger coil 3 is energized, whereby in each of the two U-shaped bracket of the yoke 2 'a closed magnetic field is generated.
  • the magnetic field energy of the system is the smaller the smaller the gap 44 'is.
  • the system tends to minimize its magnetic field energy and thus reduce the gap 44 ', so that the plunger armature 4' is accelerated towards the receptacle 21 '. This acceleration causes the cut.
  • the plunger armature 4 ' can be returned to the starting position by the return spring 49'.
  • the disadvantage of devices 1 'constructed in this way is to be seen in particular in the fact that their manufacture and assembly is complicated and costly.
  • the yoke 2 ' is made of a pressed steel profile. It must be the two holes for the plunger anchor 4 'and the plunger 43' are mounted, and the outer contours are milled. Thereafter, the plunger coil 3 'is inserted, and the steel also separately manufactured Aufhahme Culture 21' is pressed into the front hole so that it is surrounded by the plunger coil 3 '.
  • the carrier 1 must also be made separately and the yoke 2 'thereon by means of screws 11', 12 'are attached.
  • GB-2O65'375 A discloses a magnetic drive with a plunger coil and a
  • U-shaped half yoke driving a plunger anchor in a known manner.
  • the plunger coil is wound on a coil holder, which has a flange at its two ends.
  • the two flanges and the two legs of the half yoke are each with one Provide projection or a groove which are designed so accurate that the coil holder engages when inserted into the half-yoke.
  • the coil holder and the half yoke are held together by a mutual elastic positive connection.
  • a disadvantage of this structure is that the production of the half-yoke with its mounted on the inner sides of the legs grooves is expensive.
  • the legs of the half yoke In order to ensure the elasticity required for latching, the legs of the half yoke must be sufficiently thin; However, this requirement is contrary to those for a thick semi-yoke as possible, which is needed to obtain the largest possible magnetic flux through the half-yoke.
  • the half-yoke must also be wide enough to accommodate the coil mount in a U-shaped slot in one of the legs, resulting in a large footprint.
  • the cutting device should in particular be made of simple parts to produce, have a particularly simple structure, be inexpensive, allow a large magnetic flux and take up little space.
  • inventive cutting device as defined in the first claim.
  • Advantageous embodiments are specified in the dependent claims.
  • a method is also specified for mounting the device according to the invention.
  • the invention uses a further developed magnetic drive for cutting a thread-like body compared to the prior art.
  • the inventive device for cutting a thread-like body thus includes a stationary cutting member and a movable, provided with a magnetic drive cutting member whose interaction causes a cut in the thread-like body.
  • the magnetic drive has a stationary plunger coil for generating a Magnetic field, a stationary return yoke, a movably guided, with the movable cutting member operatively connected plunger armature and a support structure which carries at least two stationary elements of the magnetic drive on.
  • the support structure has at least one elastically deflectable arm for forming at least one latching closure, by means of which one of the at least two stationary elements can be fastened to the support structure.
  • the plunger coil, the yoke yoke and the plunger armature are arranged and arranged in relation to one another such that the magnetic field is closed and runs essentially in the plunger armature and in the yoke yoke.
  • the support structure carries the plunger coil and two half-yokes, which act as yoke yokes, and connects them to one another.
  • the half yokes are attached to the support structure via two snap fasteners each.
  • the plunger coil is preferably wound directly on the support structure.
  • the support structure is preferably made of plastic and is manufactured in one piece by injection molding.
  • the support structure combines as many functions as possible. It is preferably simultaneously carrier of the winding of the plunger coil, positioning and holder for the two Halbjoche,
  • a support structure is provided, and at least two stationary elements of the magnetic drive are introduced into the support structure.
  • One of the at least two stationary elements is fastened to the carrier structure via at least one latching closure, which is formed by at least one elastically deflectable arm.
  • Figures 1 and 2 show perspective views of a cutting device according to the prior art.
  • Figures 3, 5 and 7 show partially exploded perspective views of the most important parts of three embodiments of the inventive device.
  • FIGS. 4, 6 and 8 show longitudinal sections through the embodiments of FIGS. 3, 5 and 7, respectively.
  • Figures 3 and 4 show a first embodiment of the inventive cutting device 1. Important parts of the device are held together by a support structure 7, that is supported and connected together.
  • the support structure 7 is a one-piece injection-molded part made of a plastic, for example. Of polyamide, and may be supplemented with fillers and / or reinforcing materials such as glass fibers. It consists essentially of a bobbin 75, four snap fasteners 71-74 and a bracket 76.
  • the bobbin 75 is z.
  • the profile of the interior of the coil carrier 75 and the outer shape of a plunger armature 4 with a rectangular cross-section are matched to one another so that the plunger armature 4 is guided inside the coil carrier 75 and is movable back and forth along its longitudinal direction. Accordingly, the inner surfaces of the bobbin 75 are formed as guide surfaces suitable.
  • the Immersion anchor 4 is made of a ferromagnetic material and is, for example.
  • a plunger 43 which consists of a non-ferromagnetic material.
  • a return spring 49 is slipped so that it surrounds the plunger 43 and in the assembled state, on the one hand on the plunger armature 4 and on the other hand on the bracket 76 is supported.
  • the bracket 76 has a bore 77 through which the plunger 43 passes and in which it is guided.
  • a knife holder 51 is attached to the plunger 43 via a suitable, preferably detachable connection 52.
  • the knife holder 51 carries, as its name implies, a cutting blade 5, which cooperates with a stationary anvil 6. Between the anvil 6 and the cutting blade 5, the path of a thread-like, longitudinally moved body 9, z. B. a yarn.
  • the snap locks 71-74 serve in pairs the attachment of two substantially U-shaped half yokes 21, 22. They are identical to each other and each have a pair of deflectable arms 81, 82 on. Each arm 81, 82 is provided with inwardly directed lugs 83, 84.
  • the arms 81, 82 are so elastic that they can be deflected outwards.
  • a half yoke 21 When assembling the device, a half yoke 21 is inserted from above (or below) into the two associated snap fasteners 71, 73. The guidance of the half-yoke 21 in the longitudinal direction provide stops 85-88; two more such attacks are hidden in Figure 1 and thus not apparent.
  • the lugs 83, 84 slide along the half yoke 21, so that the arms 81, 82 are deflected outwards.
  • the half-yoke 21 has reached its end position, the lugs 83, 84 snap over (or under) it, and the arms 81, 82 return to their final state thanks to their elasticity from their lateral deflection.
  • the half-yoke 21 is held by the two snap fasteners 71, 73 assigned to it and the stops 85, 87 assigned to it.
  • the plunger armature 4 with the return spring 49 is inserted into the coil carrier 75.
  • At the end of the knife holder 51 is attached to the plunger, which rests on the bracket 76 so that the plunger armature 4 can not be moved out of the bobbin 75. This keeps the device together.
  • the longitudinal axes of plunger coil 3, coil support 75, plunger 4, plunger 43, return spring 49 and cutting blade 5 are preferably centered on each other and coincide in a single longitudinal axis a.
  • the plunger armature 4 and the half yokes 21, 22 each consist of a ferromagnetic material.
  • the two half-yokes 21, 22 serve as the yoke 2 'in the prior art, the closure of two symmetrical to each other magnetic circuits 31, 32, which have a common branch in the plunger armature 4 and can drive the plunger armature 4.
  • the corresponding legs of the two half yokes 21, 22 are mounted very close to the plunger armature 4, which is movable back and forth in the rear passage 24 formed by them.
  • the corresponding legs of the half yokes 21, 22 also form a front passage 23 for the plunger armature 4.
  • the plunger armature 4 In its initial position, the plunger armature 4 is outside or at least only partially in the front passage 23 (see also Figure 4). Only the non-ferromagnetic ram 43 protrudes through the front passage 23, but does not affect the magnetic field 31, 32.
  • the plunger coil 3 is energized, whereby closed magnetic fields 31, 32 in the plunger armature 4 and in the two half-yokes 21, 22 are generated.
  • the magnetic field energy of the system is the smaller, the more the front passage 23 is filled with ferromagnetic material.
  • the system tends to minimize its magnetic field energy and thus to fill the forward passage 23 with the plunger armature 4, so that the plunger armature 4 is accelerated into the front passageway 23.
  • the plunger armature 4 moves according to Figure 1 to the left against the anvil 6, wherein in a known manner, the thread-like body or the yarn 9 is separated.
  • the excitation of the plunger coil 3 is stopped, and the return spring 49 brings the plunger armature 4 to the right in the starting position according to FIG 4 back.
  • the plunger armature 4 and the two half yokes 21, 22 can be produced as simple stamped parts. This is an important advantage over the prior art, where the manufacture of the yoke 2 'is much more complex and expensive.
  • the support structure 7 combines in the embodiment of Figures 3 and 4 several functions in itself. It is at the same time carrier of the winding of the plunger coil 3, positioning and holder for the two Halbjoche 21, 22, linear guide for the plunger armature 4 and the plunger 43 and support for the return spring 49. This combination of several functions in a single, easy to produce and inexpensive injection molded part Figure 7 is another advantage of the present invention.
  • the entire device 1 shown here is usually installed in a housing, which is not shown here. However, it is sufficient a single attachment to connect the whole erfmdungsgemässe device with the housing, which there are several possibilities.
  • FIGS. 5 and 6 show a second embodiment of the device 1 according to the invention. This second embodiment is similar in many respects to the first embodiment of FIGS. 3 and 4, so that here already known from FIGS.
  • a snap fastener 71 is made in this embodiment with only one elastic arm to indicate that there are many possibilities known per se for the snap fasteners 71-74.
  • an anvil 6 is connected via an anvil support 61 with the lower half yoke 22 or preferably made with this one piece.
  • the part that combines half yoke 22, anvil carrier 61 and anvil 6 in itself can be produced as a simple stamped part.
  • the longitudinal axes of plunger coil 3, coil carrier 75, plunger armature 4, plunger 43, return spring 49, cutting blade 5 and anvil 6 are preferably centered on each other and coincide in a single longitudinal axis a.
  • FIGS. 7 and 8 in turn, most of the elements that are already shown in FIGS. 3-6 can be seen.
  • an anvil 6 is attached to the plunger 43, and a cutting blade 5 is fixedly arranged on a knife carrier 53.
  • the knife carrier 53 adjoins the lower half yoke 22, but is slightly offset, so that the cutting edge of the cutting knife 5 lies in the axis a, which is the movement axis and the coil axis.
  • the longitudinal axes of plunger coil 3, coil carrier 75, plunger 4, plunger 43, return spring 49, cutting blade 5 and anvil 6 are preferably centered on each other.
  • the cutting blade 5 could also be fastened differently than at the lower half yoke 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Electromagnets (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Coiling Of Filamentary Materials In General (AREA)

Abstract

Le dispositif (1) sert à couper un corps (9) en forme de fil se déplaçant longitudinalement (9). Ce dispositif présente une lame de coupe (5) et une enclume (6) coopérant avec la lame de coupe (5). Un entraînement magnétique pour la lame de coupe (5) comprend une bobine mobile (3), une culasse en deux parties (21, 22) et un noyau plongeur (4) lié à la lame de coupe (4). Une structure support (7) porte la bobine mobile (3) et les deux demi-culasses (21, 22). Les demi-culasses (21, 22) sont fixées à la structure support (7) par des bras pouvant être déviés élastiquement (81, 82), au moyen de fermetures à enclenchement (71-74). On dispose ainsi d'un dispositif (1) d'une structure simple, d'une fabrication facile et économique.
PCT/CH2008/000259 2007-08-07 2008-06-09 Dispositif de coupe d'un corps en forme de fil WO2009018670A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT08757252T ATE545612T1 (de) 2007-08-07 2008-06-09 Vorrichtung zum schneiden eines fadenförmigen körpers
EP08757252A EP2176156B1 (fr) 2007-08-07 2008-06-09 Dispositif de coupe d'un corps en forme de fil
CN200880103709.7A CN101878172B (zh) 2007-08-07 2008-06-09 一种用于切断线状物体的装置
JP2010520391A JP5152541B2 (ja) 2007-08-07 2008-06-09 糸状体の切断装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1253/07 2007-08-07
CH12532007 2007-08-07

Publications (1)

Publication Number Publication Date
WO2009018670A1 true WO2009018670A1 (fr) 2009-02-12

Family

ID=39745588

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2008/000259 WO2009018670A1 (fr) 2007-08-07 2008-06-09 Dispositif de coupe d'un corps en forme de fil

Country Status (5)

Country Link
EP (1) EP2176156B1 (fr)
JP (1) JP5152541B2 (fr)
CN (1) CN101878172B (fr)
AT (1) ATE545612T1 (fr)
WO (1) WO2009018670A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4177198A1 (fr) * 2021-11-04 2023-05-10 Saurer Intelligent Technology AG Entrainement électromagnétique pour un dispositif de coupe d'une machine textile, dispositif de coupe et épurateur de fil

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104493899B (zh) * 2014-12-19 2017-02-01 无锡市士民机械设备厂 导膜及剪膜装置的切刀模机构
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2065375A (en) * 1979-12-12 1981-06-24 Sony Corp Plunger solenoid construction
GB2214356A (en) * 1987-12-24 1989-08-31 Tanashin Denki Co Electromagnetic plunger
EP0827162A1 (fr) * 1996-08-30 1998-03-04 Schneider Electric Sa Electroaimant à noyau plongeant utilisé par exemple dans un télérupteur
WO2000006479A1 (fr) * 1998-07-24 2000-02-10 Zellweger Luwa Ag Procede et dispositif pour couper un fil sur une machine a textile

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2345548Y (zh) * 1998-05-18 1999-10-27 武进市华飞电子设备厂 电子清纱器检测头

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2065375A (en) * 1979-12-12 1981-06-24 Sony Corp Plunger solenoid construction
GB2214356A (en) * 1987-12-24 1989-08-31 Tanashin Denki Co Electromagnetic plunger
EP0827162A1 (fr) * 1996-08-30 1998-03-04 Schneider Electric Sa Electroaimant à noyau plongeant utilisé par exemple dans un télérupteur
WO2000006479A1 (fr) * 1998-07-24 2000-02-10 Zellweger Luwa Ag Procede et dispositif pour couper un fil sur une machine a textile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4177198A1 (fr) * 2021-11-04 2023-05-10 Saurer Intelligent Technology AG Entrainement électromagnétique pour un dispositif de coupe d'une machine textile, dispositif de coupe et épurateur de fil

Also Published As

Publication number Publication date
EP2176156B1 (fr) 2012-02-15
JP2010535681A (ja) 2010-11-25
CN101878172A (zh) 2010-11-03
ATE545612T1 (de) 2012-03-15
JP5152541B2 (ja) 2013-02-27
CN101878172B (zh) 2013-06-19
EP2176156A1 (fr) 2010-04-21

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