US3837252A - Device for severing yarns in yarn cleaners - Google Patents

Device for severing yarns in yarn cleaners Download PDF

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Publication number
US3837252A
US3837252A US00309481A US30948172A US3837252A US 3837252 A US3837252 A US 3837252A US 00309481 A US00309481 A US 00309481A US 30948172 A US30948172 A US 30948172A US 3837252 A US3837252 A US 3837252A
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US
United States
Prior art keywords
anvil
knife
zones
hardness
knife edge
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
US00309481A
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English (en)
Inventor
P Brassel
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.)
Zellweger Uster AG
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Zellweger Uster AG
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Filing date
Publication date
Application filed by Zellweger Uster AG filed Critical Zellweger Uster AG
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Publication of US3837252A publication Critical patent/US3837252A/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
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9309—Anvil
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type

Definitions

  • a device for severing yarns in yarn cleaners includes a movable knife and an anvil forming a striking support for the knife, the striking surface of the anvil facing the knife edge being harder in the peripheral zones thereof than in the central zone contacted by the knife during the cutting operation so that the knife will retain its sharp edge for a long period of use.
  • This invention is related to a device for severing yarns in yarn cleaners, which contains a knife and an anvil as a striking support.
  • Yarn severing devices for yarn cleaners of known performance are operated electromagnetically, whereby they are designed to be operated either in the form of scissors or in the form of a chisel.
  • the latter performance is preferred because of its more simple construction.
  • For achieving a sufficiently long duration of operation with a continuous cutting capacity, i.e., to reduce the wear of the edge and of the anvil there has been suggested to support the anvil in a resilient bearing for diminishing the striking power between the knife edge and and the anvil. This performance, however, has not resulted in a substantial increase in the duration of use of the device.
  • a further type of yarn severing device for yarn cleaners uses a knife and a cylindrical, rotatable pivoted anvil.
  • the knife strikes the anvil along one of its generatrices. Due to the rotatable bearing of the anvil, its entire circumference is presented as a striking support and the probability is decreased accordingly that the knife edge always strikes the same generatrix and that a re cess and a reduced cutting capacity is produced.
  • the present invention is-directed to a device for severing yarns in yarn cleaners containing a knife and an anvil as a striking support and is characterized in that the striking surface of the anvil facing the knife edge is composed in its transversal direction of materials with different degrees of hardness.
  • the use of selected materials with different degrees of hardness is especially advantageous if the zone of the anvil, through which the yarn passes and in which the yarn consequently will be severed, consists of a softer material than the knife edge, while the zones of the anvil where no cuts occur are built with a material having a hardness which is comparable with the hardness of the knife edge.
  • the manufacture of the anvil with zones of different surface hardness can be effected in different ways.
  • One of these consists, for example, in fitting and locking an insertion plate with the required hardness in the anvil.
  • Another possibility consists in manufacturing the anvil completely with softer material and the zones which are not in the region of the passing yarn are hardened by means of methods known per se.
  • FIG. 1 is a schematic diagram of a severing device in side elevation
  • FIG. 2 is a front elevation of the device of FIG. 1;
  • FIG. 3 is a detailed view of a portion of the device of FIG. 2;
  • FIG. 4 is a detailed view of a modification of the device shown in FIG. 2.
  • the severing device consists of a knife 1, which is journalled and longitudinally displaceable in a guide block 2, provided at the free end thereof in a knife edge 3 which is advantageously hardened.
  • An arrow 4 schematically represents any suitable device for moving the knife 1 suddenly in a downward direction and effecting a subsequent return to its starting position.
  • the yarn to be severed is indicated by reference numeral 18.
  • An anvil 11 is disposed with its cutting surface opposite to the knife edge 3. As principally indicated, the anvil 11 is locked on a support 17 by means of a screw 16.
  • the cutting surface of the anvil 11 is divided into zones having different hardnesses, i.e., in two marginal zones each having a great hardness and a central zone having a relatively reduced hardness.
  • the central zone has such a width of cutting surface over which the yarn runs that under all conditions the yarn is in the range between the knife edge 3 with great hardness and the cutting surface with reduced hardness.
  • no division into zones of different hardness is provided in the lengthwise direction i.e., vertically with regard to the knife edge 3 no division into zones of different hardness is provided.
  • a recess is machined in the anvill 11, which is replaced by a prismatic body 15 having a reduced hardness with respect to the material which constitutes the knife edge 3.
  • the surface which is opposite to the knife edge 3 is evenly ground.
  • the cutting device works in such a manner that when a knife edge 3 in good condition strikes the cutting surface along its entire length, the yarn 18 will be severed properly. If the cutting device has been in use for some time, i.e., if it has made a number of cuts (for instance, 1 million), a first area of wear will be apparent at the knife edge 3, especially in its marginal zones, where it strikes the anvil within its zones 13 and 14 exhibiting greater comparable hardness. Accordingly, the section of knife edge 3 which is opposite to the softer central zone and where the yarn passes will not wear out, but impresses in the anvil only a feeble groove. By means of the marginal zones 13 and 14, which have a relatively great hardness, the ability of the knife edge 3 to strike an inadmissible deep groove into the anvil 11 is eliminated.
  • this anvil 11 also can be produced completely with a material having a hardness which corresponds to the hardness required for the central zone 15.
  • the marginal zones 13 and 14 are exposed to a method for local hardening, restricted to limited surface areas (FIG. 4). Such methods are sufficiently known in metal working techniques.
  • an anvil 11 results which provides marginal zones 13 and 14 having a great hardness and a central zone 12 with a relatively reduced hardness.
  • Device for severing yarns in yarn cleaners comprising a knife, and a striking support in the form of an anvil positioned in line with said knife, the striking surface of the anvil facing the knife edge being composed in the direction of said knife edge of zones formed by materials with different degrees of hardness.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Coiling Of Filamentary Materials In General (AREA)
US00309481A 1971-11-26 1972-11-24 Device for severing yarns in yarn cleaners Expired - Lifetime US3837252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1722171A CH538418A (de) 1971-11-26 1971-11-26 Schneidvorrichtung für Garnreiniger

Publications (1)

Publication Number Publication Date
US3837252A true US3837252A (en) 1974-09-24

Family

ID=4423706

Family Applications (1)

Application Number Title Priority Date Filing Date
US00309481A Expired - Lifetime US3837252A (en) 1971-11-26 1972-11-24 Device for severing yarns in yarn cleaners

Country Status (5)

Country Link
US (1) US3837252A (enrdf_load_stackoverflow)
JP (1) JPS5033169B2 (enrdf_load_stackoverflow)
CH (1) CH538418A (enrdf_load_stackoverflow)
DE (1) DE2232290C3 (enrdf_load_stackoverflow)
IT (1) IT967526B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387744A (en) * 1981-04-01 1983-06-14 Burlington Industries, Inc. Thread severing mechanism associated with shuttleless loom
US4505304A (en) * 1983-03-03 1985-03-19 Zust John E Weft cutting device for a loom
US5065798A (en) * 1991-01-28 1991-11-19 Panduit Corp. Stretched strap cable tie tensioning and severing tool
US5355754A (en) * 1992-10-08 1994-10-18 Billy Baker Carpet seam cutter
US20070295180A1 (en) * 2004-07-09 2007-12-27 Cfs Kempten Gmbh Cutting Strip

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51155768U (enrdf_load_stackoverflow) * 1975-06-04 1976-12-11
WO2000006479A1 (de) * 1998-07-24 2000-02-10 Zellweger Luwa Ag Verfahren und vorrichtung zum schneiden von garn auf einer textilmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US416602A (en) * 1889-12-03 James e
US1823501A (en) * 1928-10-31 1931-09-15 Black Rock Mfg Company Rubber-cutting machine
US3292477A (en) * 1965-02-19 1966-12-20 Potter Instrument Co Inc Tape splicer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US416602A (en) * 1889-12-03 James e
US1823501A (en) * 1928-10-31 1931-09-15 Black Rock Mfg Company Rubber-cutting machine
US3292477A (en) * 1965-02-19 1966-12-20 Potter Instrument Co Inc Tape splicer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387744A (en) * 1981-04-01 1983-06-14 Burlington Industries, Inc. Thread severing mechanism associated with shuttleless loom
US4505304A (en) * 1983-03-03 1985-03-19 Zust John E Weft cutting device for a loom
US5065798A (en) * 1991-01-28 1991-11-19 Panduit Corp. Stretched strap cable tie tensioning and severing tool
US5355754A (en) * 1992-10-08 1994-10-18 Billy Baker Carpet seam cutter
US20070295180A1 (en) * 2004-07-09 2007-12-27 Cfs Kempten Gmbh Cutting Strip

Also Published As

Publication number Publication date
CH538418A (de) 1973-06-30
IT967526B (it) 1974-03-11
DE2232290C3 (de) 1980-10-16
JPS5033169B2 (enrdf_load_stackoverflow) 1975-10-28
DE2232290B2 (enrdf_load_stackoverflow) 1980-02-28
DE2232290A1 (de) 1973-05-30
JPS4863037A (enrdf_load_stackoverflow) 1973-09-03

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