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US3570353A - Electromagnetic cutting device with change-over switch - Google Patents

Electromagnetic cutting device with change-over switch Download PDF

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Publication number
US3570353A
US3570353A US822249A US3570353DA US3570353A US 3570353 A US3570353 A US 3570353A US 822249 A US822249 A US 822249A US 3570353D A US3570353D A US 3570353DA US 3570353 A US3570353 A US 3570353A
Authority
US
United States
Prior art keywords
cutter
armature
cutting
cut
knife
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
US822249A
Other languages
English (en)
Inventor
Kurt Hess
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.)
Heberlein and Co AG
Original Assignee
Heberlein and Co 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 Heberlein and Co AG filed Critical Heberlein and Co AG
Application granted granted Critical
Publication of US3570353A publication Critical patent/US3570353A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/086—Electric, magnetic, piezoelectric, electro-magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • 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
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/088—Clamping device
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
    • F16B12/44—Leg joints; Corner joints
    • F16B2012/446—Leg joints; Corner joints with three-dimensional corner element, the legs thereof being inserted in hollow frame members
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8765—Magnet- or solenoid-actuated tool
    • Y10T83/8766—Tool movement modifies actuating circuit
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8765—Magnet- or solenoid-actuated tool
    • Y10T83/8768—Solenoid core is tool or tool support
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8772—One tool edge of tool pair encompasses work [e.g., wire cutter]

Definitions

  • the present invention relates to a cutting device for thread, rope or wire and the like, and includes a cutter which is actuated by the armature of an electromagnet or solenoid.
  • apparatuses in order to effect reliable and precise cutting of textile threads, ropes or wires, for example, apparatuses are known in which two cutting edges which are moved towards each other in the manner of scissors, and in which the material remaining after the cut, is caught or pinched fast by a special device separate from the cutting device.
  • a bank of knives rigidly fixed on the armature of an electromagnet and which has a passage for the material to be cut arranged within the cutter is lead horizontally and with a traction movement against a cutting edge which is horizontally stationary, together with the passing material to be cut.
  • the cutter is thus vertically pressed against the surface of the knife bank by a pressure spring acting from above so that, as the length of the path of movement of the knife bank increases until it meets with the cutting edge of the cutter, the pressure of the cutter against the knife bank also increases so that the pressure is at its maximum when cutting is effected.
  • the disadvantage of this apparatus consists in that, under certain circumstances, the knife bank may draw the material to be cut out of its normal running path so that it forms an angle with the cutting and knife edges, whereby, instead of cutting the material, it may pinch the latter between the cutter and knife edges. Furthermore, because of defects such as knots, differences in diameter and so on, which occur in the material to be cut, it may not be possible to advance the same uniformly between the knife bank and the cutter edge because the cutter edge is lifted from the knife, and this may also lead to pinching of the material to be. cut.
  • the separation of the threads is effected by the armature of a solenoid by centrally attracting the armature which can be swiveled about one end thereof, whereby a cutter fixed on the other end of the armature strikes a conical anvil with a cutting edge, a thread being led over the anvil by means of a thread leading groove.
  • the cutter is situated on one arm of a U-shaped device on the other arm of which is provided a thread pinching device, which, acting simultaneously with the cutter, fixes the thread on a further anvil. After termination of the cutting step, the cutter is lifted away from the anvil together with the thread pincher by a retraction spring arranged above the swivel center of the armature.
  • This apparatus also presents the disadvantage that, by hammerlike advancing of the cutter as well as by the cutting faces gliding past each other in an oblique plane, respectively,
  • pinching of the material to be cut may also occur within a wedge-shaped grooveof the anvil.
  • armature vibration which is caused by the traction spring as well as by saturation of the magnetic field, being transferred to the cutter.
  • much of the cutting force is absorbed by the preceding friction between cutter and knife bank, so that the remaining cutting force of the armature is reduced for the actual cutting operation.
  • I provide a cutting device for thread, rope, wire or the like, with a cutter actuatable by the armature of an electromagnet, comprising: a slidable and swivellable cutter which, at a free extremity, cooperates with a coupling part rigidly connected with the armature, and which cooperates at its other end with a fixed knife.
  • I further provide a retraction spring for applying a force between the sliding cutter and the stationary knife, as well as for applying a retractive force on the knife and on the armature.
  • I provide means for pinching the material to be out just prior to the cutting and for retaining an end of the material in that condition as long as desired after cutting occurs.
  • Such means may include a member which shifts with the cutter but which precedes it during the protraction excursion; and a pad against which such member presses the material to be cut just prior to the actual cutting.
  • Another feature of the invention resides in the provision of a resistance which is normally bridged by the solenoid induction coil circuit; but which can be placed in series with the coil by a switch in the bridging circuit.
  • the various parts are so ar ranged that bridging is interrupted just prior to completion of the protraction excursion wherefor pinching and holding of the material is effected only by a holding current.
  • the material is not cut on the first protraction, its thickness causes an airgap between the coil and core of the solenoid, and this gap, together' with the low holding current and the retraction spring, return the cutter to its starting position from which it again strikes at the material and continues to dose until cutting is achieved after which it remains protracted to hold the materialend.
  • FIG. 1 is a side elevational view of the apparatus of the present invention in its normal at rest position
  • FIG. 2 is a plan view of a part of the cutting device in normal position
  • FIG. 3 is a view similar to that of FIG. 1, but showing the apparatus in cutting position;
  • FIG. 4 is a plan view similar to that of FIG. 2, but showing the cutting device in cutting position;
  • FIG. 5 is a circuit diagram of the electrical system.
  • the cutting device shown in FIGS. 1 and 2 consists of a housing 1 in which a pot magnet 2 and tubular coil 3 are arranged.
  • the enlarged end 7 of the pin 6 has a central opening 8 for vertically swivellable arrangement therein of a cutter 9, and of a pinching member 10 which is rigidly fixed on the upper face of the cutter 9.
  • the cutter 9 is drawn against a knife 14 by a retraction spring 11 which, by one of its extremities, is attached to a hook 12 provided on the housing 1.
  • the pressure against the knife bank 13 and the knife 14 provided thereon is increased as the knife comes forward due to the effect of the spring ill.
  • the knife 14 is provided with an opening 15 for passage of the material 16 to be cut.
  • the member 10 for pinching the material to be cut presses the material 16 to be cut against an elastic pad 17 which is fixed on the rear wall 19 of the housing, and there maintains the material 16 to be cut in position.
  • the cutter 9, together with the member 10 is maintained in the cutting position by the armature 4 and the pin 6 as shown in FIGS. 3 and 4, this condition being maintained as long as the current circuit is closed.
  • the cutter 9 and member 10 may be returned to normal position by interrupting the current circuit.
  • a metal ring 26 On the free end of armature l, a metal ring 26 is provided with an insulating ring 27 lining the inner surface thereof. In its normal position, the contact point of a switching contact 25 is in contact with the metal ring 26, so that the resistance 2a in the current supply line for the coil 3 is coil However, in a certain position of the armature 4 within the coil 3, contact point of the switch contact 25 comes into contact with the insulating ring 27, wherefor the bridging of the resistance 24 is interrupted, and the coil 3 is connected in series with the resistance 24. In this circumstance, only a relatively small holding current flows through the coil 3, and the armature 4 is, therefore, during the last portion of its protractive excursion, moved only by the holding current and its mass acceleration.
  • the holding current is not sufficient to hold the armature 4 with the cutter 9 and the member in the cutting position of FIGS. 3 and 4 because of the remaining airgap between the armature 4 and core cap 20. Accordingly, the armature 4 is retracted into its original position (FIGS. 1 and 2) by the spring 11, and the resistance 24 connected in series with the coil 3 is again bridged by the switch contact 25, wherefor full current flows again in coil 3, whereby the cutting procedure is automatically repeated until the material is completely cut through.
  • an essential advantage of the cutting device of the present invention consists in that the cut may be effected in all positions of the thread; that, by a series circuit of the induction coil with a resistance, an undesirable heating of the coil is prevented; and that, when a thick or hard material is incompletely cut, the cutting is automatically repeated until the material is completely cut through.
  • Cutting apparatus for thread, rope and wirelike material with a cutter actuated by the armature of an electromagnet, characterized by a cutter having a free extremity, a coupling member rigidly connected to said armature, means for mounting said cutter on said coupling member for horizontal sliding movement and for vertical swiveling movement, a fixed knife cooperating with said cutter to cut material when said cutter is advanced, and a traction spring attached to the cutter for exerting pressure between said cutter and the rigid knife, as well as a retracting force acting on the cutter and the armature.
  • Cutting apparatus for thread, rope and wirelike material with a cutter actuated by the armature of an electromagnet, characterized by a cutter having a free extremity, a coupling member rigidly connected to said armature, means for mounting said cutter on said coupling member for sliding movement in one direction and for swiveling movement, a fixed knife cooperating with said cutter to cut material when said cutter is advanced, and a traction spring attached to the cutter for exerting pressure between said cutter and the rigid knife, as well as a retracting force acting on the cutter and the armature, a material pinching means comprising a member rigidly connected with the cutter for moving therewith, and a pad fixed opposite the end of said member and against which pad the member presses the cut material after cutting has been effected.
  • Cutting apparatus for thread, rope and wirelike material with a cutter actuated by the armature of an electromagnet, characterized by a cutter having a free extremity, a coupling member rigidly connected to said armature, means for mounting said cutter on said coupling member for sliding movement in one direction and for swiveling movement, a fixed knife cooperating with said cutter to cut material when said cutter is advanced, and a traction spring attached to the cutter for exerting pressure between said cutter and the rigid knife, as well as a retracting force acting on the cutter and the armature, contact means arranged at one end of the armature and comprising a conductive member and an insulating member for actuatin a switch member to effect a series connection of the induc ion coil of the electromagnet with a resistance before the armature reaches the full limit of its protrative excursion.
  • Cutting apparatus characterized by a ring-shaped knife opened to one side which is arranged to cooperate with the moveable cutter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Tyre Moulding (AREA)
  • Coiling Of Filamentary Materials In General (AREA)
  • Treatment Of Fiber Materials (AREA)
US822249A 1968-05-13 1969-05-06 Electromagnetic cutting device with change-over switch Expired - Lifetime US3570353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH707168A CH490942A (de) 1968-05-13 1968-05-13 Schneidvorrichtung für faden-, seil- und drahtförmiges Schnittgut

Publications (1)

Publication Number Publication Date
US3570353A true US3570353A (en) 1971-03-16

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ID=4319466

Family Applications (1)

Application Number Title Priority Date Filing Date
US822249A Expired - Lifetime US3570353A (en) 1968-05-13 1969-05-06 Electromagnetic cutting device with change-over switch

Country Status (5)

Country Link
US (1) US3570353A (de)
CH (1) CH490942A (de)
DE (1) DE1922712A1 (de)
FR (1) FR2008345A1 (de)
GB (1) GB1202668A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878412A (en) * 1972-07-21 1975-04-15 Kurpanek W H Magneto-motive reciprocating device
US6494627B2 (en) * 2000-05-01 2002-12-17 Fuji Photo Film Co., Ltd. Image-recording apparatus
EP1918088A1 (de) * 2006-11-02 2008-05-07 Societe de Technologie Michelin Vorrichtung und Verfahren zur Durchführung eines Drahtes
CH699425B1 (de) * 2007-06-14 2010-03-15 Uster Technologies Ag Vorrichtung zum Schneiden eines fadenförmigen Körpers.
ITMI20101905A1 (it) * 2010-10-19 2012-04-20 Btsr Int Spa Dispositivo di taglio di un filo tessile durante la sua alimentazione ad un elemento operatore
US8212640B1 (en) 2011-07-26 2012-07-03 Lockheed Martin Corporation Tool having buffered electromagnet drive for depth control
CN107309937A (zh) * 2017-08-12 2017-11-03 荆门创佳机械科技有限公司 一种塑料排水板电磁铁切割刀的行程开关
CN109872512A (zh) * 2019-04-08 2019-06-11 李振玲 一种变电站母线越级跳闸报警系统
CN111620193A (zh) * 2020-06-10 2020-09-04 夏秋兰 一种纺织制造业用纺织丝线防脱轮收卷装置
EP4177198A1 (de) * 2021-11-04 2023-05-10 Saurer Intelligent Technology AG Elektromagnetischer antrieb für eine schneidvorrichtung einer textilmaschine, schneidvorrichtung und garnreiniger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798548A (en) * 1955-04-28 1957-07-09 Leirer Walter Cutting machine for cutting extruded plastics
US3314150A (en) * 1964-10-23 1967-04-18 Du Pont Yarn cutting apparatus
GB1068228A (en) * 1965-04-28 1967-05-10 Heberlein & Co Ag Improvements in or relating to cutting devices
US3322013A (en) * 1964-08-28 1967-05-30 Zellweger Uster Ag Yarn cutting and clamping mechanism
US3358541A (en) * 1965-06-25 1967-12-19 Frei Geb Shear-type cutter assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798548A (en) * 1955-04-28 1957-07-09 Leirer Walter Cutting machine for cutting extruded plastics
US3322013A (en) * 1964-08-28 1967-05-30 Zellweger Uster Ag Yarn cutting and clamping mechanism
US3314150A (en) * 1964-10-23 1967-04-18 Du Pont Yarn cutting apparatus
GB1068228A (en) * 1965-04-28 1967-05-10 Heberlein & Co Ag Improvements in or relating to cutting devices
US3358541A (en) * 1965-06-25 1967-12-19 Frei Geb Shear-type cutter assembly

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878412A (en) * 1972-07-21 1975-04-15 Kurpanek W H Magneto-motive reciprocating device
US6494627B2 (en) * 2000-05-01 2002-12-17 Fuji Photo Film Co., Ltd. Image-recording apparatus
US7976660B2 (en) 2006-11-02 2011-07-12 Michelin Recherche Et Technique S.A. Device and method for guiding a thread
US20080105359A1 (en) * 2006-11-02 2008-05-08 Michelin Recherche Et Technique S.A. Device and method for guiding a thread
FR2908072A1 (fr) * 2006-11-02 2008-05-09 Michelin Soc Tech Dispositif et procede de guidage d'un fil
EP1918088A1 (de) * 2006-11-02 2008-05-07 Societe de Technologie Michelin Vorrichtung und Verfahren zur Durchführung eines Drahtes
CH699425B1 (de) * 2007-06-14 2010-03-15 Uster Technologies Ag Vorrichtung zum Schneiden eines fadenförmigen Körpers.
ITMI20101905A1 (it) * 2010-10-19 2012-04-20 Btsr Int Spa Dispositivo di taglio di un filo tessile durante la sua alimentazione ad un elemento operatore
WO2012052819A1 (en) * 2010-10-19 2012-04-26 Btsr International S.P.A. Cutting device of a textile yarn during its feeding to an operating device
US8212640B1 (en) 2011-07-26 2012-07-03 Lockheed Martin Corporation Tool having buffered electromagnet drive for depth control
CN107309937A (zh) * 2017-08-12 2017-11-03 荆门创佳机械科技有限公司 一种塑料排水板电磁铁切割刀的行程开关
CN109872512A (zh) * 2019-04-08 2019-06-11 李振玲 一种变电站母线越级跳闸报警系统
CN111620193A (zh) * 2020-06-10 2020-09-04 夏秋兰 一种纺织制造业用纺织丝线防脱轮收卷装置
EP4177198A1 (de) * 2021-11-04 2023-05-10 Saurer Intelligent Technology AG Elektromagnetischer antrieb für eine schneidvorrichtung einer textilmaschine, schneidvorrichtung und garnreiniger

Also Published As

Publication number Publication date
GB1202668A (en) 1970-08-19
CH490942A (de) 1970-05-31
DE1922712A1 (de) 1969-11-20
FR2008345A1 (de) 1970-01-23

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