US3218898A - Rotating tools and grinders mounted on revolving toolholder for cutting artificial filaments - Google Patents

Rotating tools and grinders mounted on revolving toolholder for cutting artificial filaments Download PDF

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Publication number
US3218898A
US3218898A US255379A US25537963A US3218898A US 3218898 A US3218898 A US 3218898A US 255379 A US255379 A US 255379A US 25537963 A US25537963 A US 25537963A US 3218898 A US3218898 A US 3218898A
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US
United States
Prior art keywords
knife
yarn
wheel
yarn wheel
turntable
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
US255379A
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English (en)
Inventor
Briscoe Josiah Alfred
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.)
Imperial Chemical Industries Ltd
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Imperial Chemical Industries Ltd
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Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
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Publication of US3218898A publication Critical patent/US3218898A/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
    • D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
    • D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form 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
    • 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
    • Y10T83/303—With tool sharpener or smoother
    • 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
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4812—Compound movement of tool during tool cycle
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/654—With work-constraining means on work conveyor [i.e., "work-carrier"]
    • Y10T83/6545—With means to guide work-carrier in nonrectilinear path
    • Y10T83/6547—About axis fixed relative to tool station
    • Y10T83/6548—Infeed
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7755—Carrier for rotatable tool movable during cutting
    • Y10T83/7788—Tool carrier oscillated or rotated
    • 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
    • Y10T83/8789—With simple revolving motion only
    • Y10T83/8794—Revolving tool moves through recess in work holder or cooperating tool

Definitions

  • the primary object of the present invention is to pro vide a new apparatus in which continuous sharpening of the knives takes place and eflicient operation at much increased speeds is thereby made possible.
  • the apparatus consequently permits the production of staple fibre at correspondingly enhanced rates.
  • apparatus for cutting continuous filaments into short lengths comprises a yarn wheel having equi-spaced projections round its circumference, means for holding filamentary yarn in position on the periphery of the yarn wheel, generally in the manner described in the aforesai-dPatent No. 2,664,160, at least one rotatable circular knife blade and abrasive stone-s mounted to be maintained in continuous contact with said knife blade, the .arrangement being such that, in operation, the rotating knife blade moves across the yarn wheel between a pair of said projections to sever the yarn.
  • the arrangement is preferably such that in operation, the point of contact of the rotating knife blade with the yarn between the two projections moves, at a similar velocity, in the direction of movement of the yarn during the passage of the knife blade through said filamentary yarn.
  • a series of such continuously sharpened circular knife blades may be provided, mounted to operate successively, for example on a turntable whose .movement is synchronised wit-h that of the yarn wheel.
  • Each knife blade of a series is preferably arranged to rotate at a speed relative to the turntable such-that successive cuts are made by different parts of the knife blades circumference. It may be preferred to make the rotation of the knife blade an odd fraction i.e. of the rotation of the turntable in order to assist even wear of the knife blades circumference.
  • the abrasive stones may be stationary but they can be made rotatable, adapted to be driven either positively or merely by means of the friction between the knife blade and the surface of the stone. It is normal to provide a pair of rotatable stones for each knife blade so that the knife blade is located between the stones and the stones may be mounted either on a single spindle or .on separate Patented Nov. 23, 1965 spindles. The spindles carrying rotatable knife blades or stones obviously should be mounted at relative inclinations required to achieve optimum cutting or sharpening as the case might be.
  • an apparatus for cutting continuous filaments into short lengths consisting of a yarn wheel having equi-spaced projections round its circumference, means for holding filamentary yarn in position round said Wheel, a series of rotatable circular knife blades carried on a turntable and maintained in continuous contact with abrasive stones mounted on said turntable, the turntable and knife blades being so positioned that the cutting edges of the knife blades will fit into the spaces between the projections on the wheel, and means for rotating the yarn wheel and turntable at synchronised rates so that the knife blades will not come into contact with said projections.
  • I provide a process for the production of staple fibre from continuous filamentary yarn by means of the aforementioned apparatus wherein a continuous filamentary yarn is "held in contact with a number of projections on a moving wheel and .are cut by a series of rotating circular continuously sharpened knife blades, mounted on a rotating turntable, wihch make contact with the yarn only when it is bridging a space between two projections on the wheel, the point of contact moving, at a similar velocity, in the direction of movement of the yarn during the passage of the blade through the filamentary yarn. Operation of the process in the specified manner is achieved by tilting the knife blades at an appropriate angle to the turntable which is itself tilted relative to the yarn wheel.
  • FIG. I diagrammatically shows a side elevation of an apparatus for cutting continuous filaments into short lengths
  • FIGr. II diagrammatically shows a plan view of the apparatus of FIG. I.
  • a turntable 1, mounted on a spindle 2 carries a series of four circular knife blades 3 mounted on individual spindles.
  • Two abrasive grindstones 6, 7 are associated with each knife blade 3, the grindstones being in contact with opposing edges of the knife blade 3 and arranged to provide continuous sharpening of the knife blade 3 in operation.
  • the grindstones 6, 7 being rotatably mounted, are driven in operation by the friction between the knife blade 3 and the contacting surfaces of the grindstones.
  • a yarn wheel 5 with radialslots 4 is located adjacent to the turntable 1, the yarn wheel 5 and the turntable 1 being arranged to operate synchronously so that in operation the cutting edges of the knife blades 3 pass through the radial slots 4.
  • a filamentary yarn (not shown) is carried on the pen'phery of the yarn wheel 5 and is located by a series of prongs 9, in a position on the yarn wheel 5 in grooves 8 formed between the radial slots 4.
  • the knife blades 3 are driven at a speed relative to that of the turntable such that each knife blade makes about a fifth of one turn for each complete revolution of the turntable, and this arrangement ensures that each cut is made by a different part of the blade, and each part of the blade is sharpened by passing between the grindstones 6, 7 before it makes another cut.
  • the drive of the knife blade 3 is actually arranged so that each makes 101 turns for 500 revolutions of the turntable, i.e. of a turn for each complete revolution of the turntable, and in this way wear on each knife blade is substantially equalised over the whole cutting v edge instead of occurring in five separate places.
  • the blades may be desired to cause the blades to rotate at a speed relative to the turntable other than approximately /5 of the turntable speed, for instance it might be in some cases an advantage to sharpen the edge more or less than once per cut.
  • the grindstones 6, 7 may be positively driven either by gearing or other form of drive, or they may be stat-iffy instead of rotatable. If the grindstones are held stationary relative to the turn table the angle of approach of the knife edge to the stone is zero, i.e. scratches formed on the edge of the blade by the action of the grindstone are parallel to the edge of the blade. This generally is not the best method of producing a sharp edge.
  • the rotary motion of the stones whether produced by a special drive, or by the friction of the knife blade on the surface of the stone, cause the scratches on the blade edge to be other than parallel to the blade edge, and this in general produces a sharper edge on the blade.
  • the sharpening stones are shown mounted on separate spindles but it is possible to mount two stones on one spindle, such that the knife blade runs between the stones and in this case the spindle of the stones should preferably be mounted at an angle relative to the axis of the knife blade.
  • the turntable is provided with four circular knives mounted thereon. Any number of knives may be mounted on a turntable. For instance if two opposing knives of the four were removed, then the remaining two knives would enter alternate slots 4 in the yarn wheel 5 and the length of the cut pieces of yarn would be doubled. If three of the blades were removed then the length of the cut pieces would be increased four times.
  • Other turntables can be designed with other yarn wheels, e.g. turntables with other numbers of knifes of which any selection may be used at any one time.
  • Narrow slots may thus be used without any part of the blades making contact with the sides of the slots.
  • One advantage thus gained is that the distance between slots, centre to centre, may also be reduced, thereby enabling shorter lengths of fibre to be cut.
  • the apparatus and process of our invention have been used for cutting synthetic filaments in general, and in particular for the production of staple fibres of polyesters, polyamides, and polyolefines.
  • Apparatus for cutting continuous filaments into short lengths comprising: a yarn wheel having spaced apart radial projections on its circumference; means for rotating said yarn wheel; means for holding filamentary yarn in position on the periphery of said yarn wheel; a carrier disposed adjacent said yarn wheel and mounted for rotation in a plane dilferent from the plane of rotation of said yarn wheel; means for rotating said carrier; a circular knife; means mounting said knife on said carrier for rotation about an axis fixed with respect to said carrier, said mounting means positioning said knife to pass between adjacent projections on said yarn wheel in a direction normal to the plane of said wheel as said carrier is rotated and simultaneously to move the point of contact of the knife with a yarn on said yarn wheel in the direction of movement of said yarn wheel.
  • Apparatus as in claim 1 including a plurality of circular knife blades and wherein said carrier is a table disposed and rotatable in a plane normal to the plane of said yarn wheel, said mounting means for said knife blades disposing said blades near the periphery of said table in spaced apart relationship and in tilted positions relative to the surface of said table.
  • Apparatus as in claim 1 including at least one abrasive stone mounted on said carrier in continuous contact with said knife blade, said apparatus further including means for rotating said knife at a substantially lower rotational speed than said carrier.
  • Apparatus as in claim 1 including a plurality of ci-rcular knife blades and wherein said carrier is a table disposed and rotatable in a plane normal to the plane of said yarn wheel, said mounting means for said knife blades disposing sa-id blades near the periphery of said table in spaced apart relationship and in tilted positions relative to the surface of said table, said apparatus further comprising at least one abrasive stone associated with each knife and mounted on said table in continuous contact with its respective knives, and means for rotating all said knives at a substantially lower rotational speed than said table.
  • Apparatus as in claim 4 in which a pair of abrasive stones is associated with each knife, one stone of each pair contacting one surface of the respective knife and the other stone of each pair contacting the other surface of the respective knife.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
US255379A 1962-01-31 1963-01-31 Rotating tools and grinders mounted on revolving toolholder for cutting artificial filaments Expired - Lifetime US3218898A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3695/62A GB962592A (en) 1962-01-31 1962-01-31 Cutting artificial filaments into short lengths

Publications (1)

Publication Number Publication Date
US3218898A true US3218898A (en) 1965-11-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
US255379A Expired - Lifetime US3218898A (en) 1962-01-31 1963-01-31 Rotating tools and grinders mounted on revolving toolholder for cutting artificial filaments

Country Status (5)

Country Link
US (1) US3218898A (ja)
BE (1) BE627865A (ja)
DE (1) DE1979728U (ja)
GB (1) GB962592A (ja)
NL (1) NL288128A (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512437A (en) * 1967-06-22 1970-05-19 Int Paper Co Orbiting rotary cutting apparatus
US3831473A (en) * 1971-04-23 1974-08-27 Vepa Ag Device for cutting endless material, for example for the production of staples from synthetic fibers
US5373763A (en) * 1992-05-28 1994-12-20 Kabushiki Kaisha Takehara Kikai Kenkyusho Apparatus for cutting fiber
US5557997A (en) * 1994-04-06 1996-09-24 Paper Converting Machine Company Apparatus for transverse cutting
US20040149103A1 (en) * 2003-02-05 2004-08-05 C.G. Bretting Manufacturing Company, Inc. Rotating log clamp

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US955113A (en) * 1909-06-08 1910-04-12 Comas Cigarette Machine Company Continuous-cigarette-cutting machine.
US1341699A (en) * 1919-10-30 1920-06-01 Zawistowski Martin Grinder for rotary cloth-cutting machines
GB257636A (en) * 1925-03-03 1926-09-03 Crown Cork & Seal Co Machines for producing disks of cork or cork compositions
US2168400A (en) * 1937-11-18 1939-08-08 Cottrell C B & Sons Co Method of separating blanks from sheet material
US2205036A (en) * 1937-10-08 1940-06-18 Hamel Edmund Method and device for separating and uniting artificial fibrous structures to form aconnected fibrous band
GB682473A (en) * 1950-07-10 1952-11-12 Ici Ltd Cutting artificial filaments into short lengths
US2627922A (en) * 1950-02-14 1953-02-10 William Edds Machine for cutting tissue
US2692645A (en) * 1950-06-09 1954-10-26 American Enka Corp Method and apparatus for processing synthetic threads
GB720233A (en) * 1950-07-10 1954-12-15 Ici Ltd Cutting artificial filaments into short lengths
US2708969A (en) * 1950-12-22 1955-05-24 Kopelowicz Abraham Rubber thread cutting machines

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US955113A (en) * 1909-06-08 1910-04-12 Comas Cigarette Machine Company Continuous-cigarette-cutting machine.
US1341699A (en) * 1919-10-30 1920-06-01 Zawistowski Martin Grinder for rotary cloth-cutting machines
GB257636A (en) * 1925-03-03 1926-09-03 Crown Cork & Seal Co Machines for producing disks of cork or cork compositions
US2205036A (en) * 1937-10-08 1940-06-18 Hamel Edmund Method and device for separating and uniting artificial fibrous structures to form aconnected fibrous band
US2168400A (en) * 1937-11-18 1939-08-08 Cottrell C B & Sons Co Method of separating blanks from sheet material
US2627922A (en) * 1950-02-14 1953-02-10 William Edds Machine for cutting tissue
US2692645A (en) * 1950-06-09 1954-10-26 American Enka Corp Method and apparatus for processing synthetic threads
GB682473A (en) * 1950-07-10 1952-11-12 Ici Ltd Cutting artificial filaments into short lengths
GB720233A (en) * 1950-07-10 1954-12-15 Ici Ltd Cutting artificial filaments into short lengths
US2708969A (en) * 1950-12-22 1955-05-24 Kopelowicz Abraham Rubber thread cutting machines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512437A (en) * 1967-06-22 1970-05-19 Int Paper Co Orbiting rotary cutting apparatus
US3831473A (en) * 1971-04-23 1974-08-27 Vepa Ag Device for cutting endless material, for example for the production of staples from synthetic fibers
US5373763A (en) * 1992-05-28 1994-12-20 Kabushiki Kaisha Takehara Kikai Kenkyusho Apparatus for cutting fiber
US5557997A (en) * 1994-04-06 1996-09-24 Paper Converting Machine Company Apparatus for transverse cutting
US5924346A (en) * 1994-04-06 1999-07-20 Paper Converting Machine Company Method and apparatus for transverse cutting
US6123002A (en) * 1994-04-06 2000-09-26 Paper Converting Machine Company Method and apparatus for transverse cutting
US20040149103A1 (en) * 2003-02-05 2004-08-05 C.G. Bretting Manufacturing Company, Inc. Rotating log clamp
US7810419B2 (en) 2003-02-05 2010-10-12 C.G. Bretting Manufacturing Co., Inc. Rotating log clamp
US10046472B2 (en) 2003-02-05 2018-08-14 C.G. Bretting Manufacturing Co., Inc. Rotating log clamp

Also Published As

Publication number Publication date
BE627865A (ja) 1900-01-01
DE1979728U (de) 1968-02-29
NL288128A (ja) 1900-01-01
GB962592A (en) 1964-07-01

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