US3908232A - Tow converter - Google Patents

Tow converter Download PDF

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Publication number
US3908232A
US3908232A US452657A US45265774A US3908232A US 3908232 A US3908232 A US 3908232A US 452657 A US452657 A US 452657A US 45265774 A US45265774 A US 45265774A US 3908232 A US3908232 A US 3908232A
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US
United States
Prior art keywords
roller
roller system
cutter
anvil
cutting
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
US452657A
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English (en)
Inventor
Katsumi Okayama
Makoto Mizutani
Saburo Sato
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.)
KANSAI KIKO CO Ltd
Original Assignee
KANSAI KIKO CO Ltd
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 KANSAI KIKO CO Ltd filed Critical KANSAI KIKO CO Ltd
Application granted granted Critical
Publication of US3908232A publication Critical patent/US3908232A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D01G1/06—Converting tows to slivers or yarns, e.g. in direct spinning
    • D01G1/10—Converting tows to slivers or yarns, e.g. in direct spinning by cutting
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/913—Filament to staple fiber cutting

Definitions

  • ABSTRACT The present invention relates to a tow converter which stretches and breaks the tow to manufacture a sliver.
  • the present invention relates to improvements in a tow converter wherein a cutting roller system is provided between a back nip roller system and a front nip roller system to stretch and break the tow to manufacture the sliver.
  • the conventional tow converter contains disadvantages wherein, upon cutting the tow by means of the cutting roller, fibers located at the tip end portion of the cut tow are likely to form interlocking lumps. Also, at this time the cut dusts of the fibers is likely to attach to the tip end portion of the tow or to the rear end portion of the cut fiber. Furthermore, the sliver thus produced is inferior in the orientation of the fibers and is also uneven in weight.
  • FIG. 1 is a diagram illustrating an embodiment of the basic concept of the present invention
  • FIG. 2 is a plan view illustrating how the tow and the cut fibers progress in FIG. 1;
  • FIG. 3 is a perspective view showing a cutting roller system composed of an anvil roller and a cutter roller;
  • FIG. 4 is a perspective view showing a debonder roller system composed of a top roller and a bottom roller;
  • FIG. 5 is a perspective view showing the relationship of all of the roller systems with respect to each other and the gear system for driving said roller systems.
  • FIGS. 1 to 4 The embodiment of the present invention shown in FIGS. 1 to 4 will be described hereinafter.
  • the tow converter has a cutting roller system 40 provided between the back nip roller system and the front nip roller system 30, and the debonder roller 50 provided between the cutting roller system 40 and the front nip roller 30.
  • the back nip roller system 20 is composed of a top roller 21, and a bottom rollers 22, the top roller 21 being in contact, under higher pressures, with the bottom rollers 22. All of these rollers are used for the tow converting machinery and thus are well known.
  • the front nip roller system 30 is composed of a top roller 31 and a bottom roller 32, the former being in contact, under higher pressure, with the bottom roller 32. All of these rollers are used for the tow converting machinery and thus are well known.
  • the front nip roller system 30 is designed to rotate much faster in surface peripheral speed than the back nip roller system 20.
  • the cutting roller system 40 is composed of the anvil roller 41 and the cutter roller 42 which is placed opposite to the anvil roller 41 and is disposed in close proximity below the anvil roller.
  • One or more projected threads 411 are wound in a spiral shape around the surface of the anvil roller 41.
  • a plurality of eutting'edges 421 are mounted on the surface of the cutter roller 42 at angles of 0 to 20 with respect to the axial direction of the cutter roller, and are twisted in a direction opposite to the direction along which the projected thread 411 of the anvil roller is wound. Also, the cutting edges 421 have a saw tooth shape and the edge points 422 are all directed toward the rotating direction of the roller.
  • the cutter roller 42 is designed to rotate several times faster, in surface peripheral speed, than the anvil roller 4l.
  • One or more sets of debonder roller systems 50 are placed between the cutting roller system 40 and the front nip roller system 30.
  • One set of debonder roller system is composed of a top roller 51 and a bottom roller 52, which is adapted to rotate in engaging relationship with the top roller 51 with a slight spacing disposed there between.
  • a plurality of undercut channels 521 are cut on the surface of the bottom roller 52 at angles of 5 to with respect to the axial direction of the roller, and are twisted in the same direction as the twist direction of the cutting edges 421 of the cutter roller 42.
  • a plurality of undercut channels 511 are cut on the surface of the top roller 51 at the same angles as those of the undercut channels 521 of the bottom roller 52, and are twisted in a direction opposite to the direction of the undercut channel 521 thereof.
  • the top roller 51 and the bottom roller 52 separately and drivingly rotate at the same surface peripheral speed.
  • both of the rollers are designed to drivingly rotate faster in surface peripe.'al speed than the back nip roller system 20, and slower than the front nip roller system 30.
  • the tow 10 which has been supplied to the back nip roller system 20 is provided with a main draft, stretching between the back nip roller system 20 and the front nip roller system 30.
  • the tow In extending between the cutter roller 42 of the cutting roller system 40 and the anvil roller 41 thereof, the tow is impactingly grasped between the cutting edges 421 of the cutter roller 42 and the spiral-shaped projected stripe 411 of the anvil roller 41. Simultaneously, the tow is stretched by means of the cutter roller, which is rotated faster in surface peripheral speed than the back nip roller system 20 and is effectively cut thereby. Subsequently, the tip end of the tow extends through the debonder roller system 50, whereby the following effects are obtained.
  • the tip end of the tow Upon extention of the tow tip end through clearance between the top roller 51 of the debonder roller system and the bottom roller 52 thereof, the tip end of the tow is shifted in a vertical direction and a horizontal, lateral direction. Accordingly, the tip end of the tow is freyed loosely, whereby the shuffling of the fibers is improved. Since the debonder roller system 50 is faster in surface peripheral speed than the back nip roller system 20, the cut dust particles of the fibers attached to the tip end of the tow are removed by the stripping off operation thereof Since the front nip roller system 30 is faster in surface peripheral speed than the debonder roller 50, the cut dust particles of the fibers attached to the rear end of the cut fibers are moved by the stripping off operation thereof.
  • a converter for stretching and breaking a tow to manufacture a sliver utilizing a cutting roller system between a back nip roller system and a front nip roller system, said cutting rollcr system comprising an anvil roller and a cutter roller, said cutter roller being located opposite to and below the anvil roller with a slight space being disposed therebetween, projected threads wound in a spiral shape on the surface of the anvil roller and extending a distance therefrom, a plurality of cutting edges mounted on the surface of the cutter roller at angles of to with respect to the axis of the cutter roller, said cutting edges being twisted in a direction opposite to the direction along which the projected threads of the anvil roller are wound, the edge points of the cutting edges being directed in the rotating direction of the cutter roller, means for rotating the cutter roller of the cutting roller system several times faster, in surface peripheral speed, than the anvil roller and the back nip roller system, a debonder roller system placed between the cutting roller system and the front nip roller system, the debond
  • said channels being twisted in the same direction as the twist direction of the cutting edges of the cutter roller, undercut channels cut on the surface of the top roller at the same angles as those of the undercut channels of the bottom roller and being twisted in a direction opposite to the direction of the undercut channel thereof, and means for rotating the top roller and the bottom roller of the debonder roller means at the same surface peripheral speed, both of said rollers being rotated faster in surface peripheral speed than the back nip roller system, and slower than the front nip roller system.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US452657A 1973-03-22 1974-03-19 Tow converter Expired - Lifetime US3908232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3330773A JPS5429613B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-03-22 1973-03-22

Publications (1)

Publication Number Publication Date
US3908232A true US3908232A (en) 1975-09-30

Family

ID=12382887

Family Applications (1)

Application Number Title Priority Date Filing Date
US452657A Expired - Lifetime US3908232A (en) 1973-03-22 1974-03-19 Tow converter

Country Status (5)

Country Link
US (1) US3908232A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5429613B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH576535A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2412333A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1434330A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373650A (en) * 1981-01-08 1983-02-15 Ppg Industries, Inc. Continuous cutter for a glass fiber chopper
US4399589A (en) * 1980-07-29 1983-08-23 Rieter Machine Works Ltd. Traversing apparatus for a cutting machine for a synthetic filament tow
US4979270A (en) * 1989-08-03 1990-12-25 Burlington Industries, Inc. Apparatus and methods for converting tow into staple
US20100287737A1 (en) * 2007-11-03 2010-11-18 Schmidt & Heinzmann Gmbh & Co. Kg Converter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2253707C1 (ru) * 2004-09-27 2005-06-10 Костромской государственный технологический университет Устройство для штапелирования льняного волокна в ленте
DE102007052586A1 (de) * 2007-11-03 2009-05-07 Schmidt & Heinzmann Gmbh & Co. Kg Schneidvorrichtung
CN119318410A (zh) * 2024-10-22 2025-01-17 新华锦集团山东海川工艺发制品有限公司 一种幅度发束产品的制造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2221869A (en) * 1939-04-27 1940-11-19 Celanese Corp Device for producing staple fiber yarns from continuous filaments
US2250575A (en) * 1938-05-10 1941-07-29 Dreyfus Henry Textile material and the production thereof
US2464882A (en) * 1946-05-31 1949-03-22 Jr Charles Eugene Neisler Means for making slub or flake spun yarn from continuous filaments
US3251097A (en) * 1963-10-07 1966-05-17 Eastman Kodak Co Methods for producing blended yarn

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507652A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-05-23 1975-01-27

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250575A (en) * 1938-05-10 1941-07-29 Dreyfus Henry Textile material and the production thereof
US2221869A (en) * 1939-04-27 1940-11-19 Celanese Corp Device for producing staple fiber yarns from continuous filaments
US2464882A (en) * 1946-05-31 1949-03-22 Jr Charles Eugene Neisler Means for making slub or flake spun yarn from continuous filaments
US3251097A (en) * 1963-10-07 1966-05-17 Eastman Kodak Co Methods for producing blended yarn

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399589A (en) * 1980-07-29 1983-08-23 Rieter Machine Works Ltd. Traversing apparatus for a cutting machine for a synthetic filament tow
US4373650A (en) * 1981-01-08 1983-02-15 Ppg Industries, Inc. Continuous cutter for a glass fiber chopper
US4979270A (en) * 1989-08-03 1990-12-25 Burlington Industries, Inc. Apparatus and methods for converting tow into staple
US20100287737A1 (en) * 2007-11-03 2010-11-18 Schmidt & Heinzmann Gmbh & Co. Kg Converter
US8336169B2 (en) 2007-11-03 2012-12-25 Schmidt & Heinzmann Gmbh & Co. Kg Converter for the conversion of one or more fibers into staple fibers

Also Published As

Publication number Publication date
JPS49117730A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-11-11
DE2412333A1 (de) 1974-09-26
JPS5429613B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1979-09-25
CH576535A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-06-15
GB1434330A (en) 1976-05-05

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