EP0063937A2 - Dispositif à couper - Google Patents

Dispositif à couper Download PDF

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Publication number
EP0063937A2
EP0063937A2 EP82302110A EP82302110A EP0063937A2 EP 0063937 A2 EP0063937 A2 EP 0063937A2 EP 82302110 A EP82302110 A EP 82302110A EP 82302110 A EP82302110 A EP 82302110A EP 0063937 A2 EP0063937 A2 EP 0063937A2
Authority
EP
European Patent Office
Prior art keywords
strip
cutting device
heater
cutting
sensor
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.)
Withdrawn
Application number
EP82302110A
Other languages
German (de)
English (en)
Other versions
EP0063937A3 (fr
Inventor
Robert Mckenzie Mcleod
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.)
GLENCRYAN DESIGN Ltd
Original Assignee
GLENCRYAN DESIGN 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 GLENCRYAN DESIGN Ltd filed Critical GLENCRYAN DESIGN Ltd
Publication of EP0063937A2 publication Critical patent/EP0063937A2/fr
Publication of EP0063937A3 publication Critical patent/EP0063937A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/22—Severing by heat or by chemical agents
    • D06H7/221—Severing by heat or by chemical agents by heat
    • D06H7/225—Severing by heat or by chemical agents by heat using meltable yarns or interwoven metal wires heated by an electric current
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/34—Devices for cutting knitted fabrics

Definitions

  • This invention relates to a cutting device, especially but not exclusively for use with a knitting machine.
  • Knitting machines which produce strips of material for cutting into shorter lengths are programmed to insert into the knit at spacedintervals along the strip a lateral row of a heat-meltable material, for example a thermoplastics material. As the strip comes from the machine it is subjected to heat, causing this row to melt and severthe strip into the desired shorter lengths.
  • a heat-meltable material for example a thermoplastics material.
  • a cutting device for severing a strip of material into shorter lengths, the device having transport means for moving the strip through successive predetermined distances, cutting means for severing the strip at said predetermined distances, and a sensor for detecting severance of the strip by the cutting means and connected with the cutting means so that the cutting means is de- actuated with respect to the strip on severance of the strip.
  • the cutting means may be in the form of a radiation emitter, for example a radiant heater, or may operate by contact with the strip, for example as in the form of a blade or conductive heater.
  • the sensor may be a photo sensor for detecting passage of a severed length from the strip.
  • the sensor is a modulated light type light-emitting diode.
  • a counter may be included to control the distances between adjacent cuts, the counter detecting the number of rows of knitting in the case of a knitting machine.
  • the predetermined distance may be the number of rows between adjacent heat-meltable inserts in the knit so that the cutter operates at each insert.
  • the transport means may be for example a roller which contacts the material beyond the cutter to draw the material past the sensor.
  • a strip 1 of knitted fabric is manufactured on a knitting machine indicated generally at 2, the strip 1 being formed from a broader strip 3 by a longitudinal cutter 4.
  • the strip 1 passes from the cutter 4 over a roller 5 and thence past a heater 6 in the form of a tubular infra-red radiator as shown in Fig. 2.
  • the heater 6 has a glass front 7 with an elliptical reflector 8 extending across its ends, to form a housing.
  • An infra-red heater element 9 is disposed within this housing so as to produce in use a radiant heat which is concentrated by the reflector 8 into a beam passinn through the glass 7.
  • the glass 7 faces the strip 1.
  • the heater 6 is movable towards and away from the strip 1, and the motor causing this movement is connected electrically with a photo sensor 10 located downwardly of the heater 6.
  • the photo sensor 10 is in the form of a pair of modulated light type LEDs 11 disposed one at each end of a carrier tube 12 and electrically connected to a control box 13 controlling the movement of the heater 6.
  • a driven brush roller 14 extends across the width of the strip 1 and bears against a smooth guide face 15.
  • the strip 1 passes between the roller 14 and the face 15 and is fed through by the rotating roller 14.
  • a counter (not shown) is connected with the motor of the heater 6 and is programmed to count a predetermined number of rows of knitting and then to actuate the motor to advance the heater 6 to the strip 1.
  • the predetermined number of rows is the number of rows of knitting between inserted rows of heat-meltable material.
  • the free end of the strip 1 is stretched between the driven roller 14 and the roller 5, and the strip 1 is drawn past the counter until the predetermined number of rows have passed. At this point the heat-meltable row is at the heater 6.
  • the counter then actuates the motor and the heater 6 moves against the strip 1, the radiant heat from the heating element 9 melting the heat-meltable row.
  • the centre of the row generally melts first, followed by the ends, and when the ends have melted the lower part of the strip 1 is severed from the remainder and drops clear. This is detected by the photo sensor 10 which then actuates the motor to retract the heater 6 from the strip 1.
  • the severed portion of the strip 1 is drawn clear by the roller 14 and replaced by the new free end of the strip 1 as the fabric comes off the knitting machine 2. The process is repeated to produce short lengths of knitted fabric.
  • the heater 6 is a Philips infra-red radiant heater which has a power of 3 kW per metre of its length, and its overall effective length is selected in accordance with the width of the knitted fabric;
  • the roller 5 is a polished aluminium roller which is driven through gearing from the knitting machine at a speed slightly greater than the speed of feed of the fabric from the knitting machine, thereby to stretch the fabric slightly for ease of severance by the heater 6;
  • the counter comprises an A.C. inductive type proximity sensor which senses the motion of the knitting machine, and an auxiliary sensor is also provided to sense the resetting of the knitting machine for production of a new garment or length of fabric pieces and to reset the heater 6 accordingly.
  • the heater 6 can be replaced by a "contact" cutter such as an electrically-heated polished steel tube or heated blade which severs the heat-meltable knitted row on contact.
  • the photo sensor 10 can be omitted and the cutter switched off after a preset time, for example a few seconds, thereby simplifying the apparatus; alternatively the heater may be permanently switched on and moved towards and away from the fabric as necessary to melt the knitted row to be severed without damaging the fabric.
  • a photo sensor can be used to sense the approach of each heat-meltable row to actuate the heater 6, and this often proves to be more accurate than using the counter of the described embodiment; this is because the fabric can become stretched as it leaves the knitting machine so that counting the number of knitted rows can result in the severed pieces being longer than required; the sensor allows the heater to be actuated accurately at the required length of fabric. In this modification the sensor is used to actuate the heater rather than deactuate it as in the described embodiment.
EP82302110A 1981-04-23 1982-04-23 Dispositif à couper Withdrawn EP0063937A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8112556 1981-04-23
GB8112556 1981-04-23

Publications (2)

Publication Number Publication Date
EP0063937A2 true EP0063937A2 (fr) 1982-11-03
EP0063937A3 EP0063937A3 (fr) 1982-12-01

Family

ID=10521305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82302110A Withdrawn EP0063937A3 (fr) 1981-04-23 1982-04-23 Dispositif à couper

Country Status (1)

Country Link
EP (1) EP0063937A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007069285A1 (fr) * 2005-12-16 2007-06-21 Mirco Magnani Dispositif automatique de finition de produits semi-finis par tricotage
CN114232318A (zh) * 2021-12-28 2022-03-25 广东溢达纺织有限公司 一种织造与切断同步方法和装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939354A (en) * 1959-07-08 1960-06-07 Pyramid Mfg Co Inc Automatic cut-off apparatus for strip material having photoelectric control means
DE1560046A1 (de) * 1965-08-27 1970-05-06 Famatex Gmbh Schneidevorrichtung fuer das Laengs- und Querschneiden von Textilbahnen
DE1585123A1 (de) * 1963-06-28 1970-05-21 Heinrich Kalbskopf Fa Kettenstuhl
DE2056210A1 (de) * 1970-11-16 1972-05-31 Schiesser Ag, 7760 Radolfzell Verfahren und Vorrichtung zum Trennen von Warenlängen
DE2341969A1 (de) * 1973-08-20 1975-03-06 Ingbuero Und Rationalisierungs Schneidverfahren und vorrichtung zur durchfuehrung des verfahrens
US3893213A (en) * 1972-04-14 1975-07-08 Samcoe Holding Corp Methods for separating interconnected sections of tubular knitted fabric
US3945096A (en) * 1973-03-22 1976-03-23 Samuel Miranker Process for removing separating thread from a web of knitted garment portions or the like
EP0006009A1 (fr) * 1978-05-31 1979-12-12 Leonard Thomas Frank Bryan Procédé et dispositif pour couper en morceaux une bande continue

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939354A (en) * 1959-07-08 1960-06-07 Pyramid Mfg Co Inc Automatic cut-off apparatus for strip material having photoelectric control means
DE1585123A1 (de) * 1963-06-28 1970-05-21 Heinrich Kalbskopf Fa Kettenstuhl
DE1560046A1 (de) * 1965-08-27 1970-05-06 Famatex Gmbh Schneidevorrichtung fuer das Laengs- und Querschneiden von Textilbahnen
DE2056210A1 (de) * 1970-11-16 1972-05-31 Schiesser Ag, 7760 Radolfzell Verfahren und Vorrichtung zum Trennen von Warenlängen
US3893213A (en) * 1972-04-14 1975-07-08 Samcoe Holding Corp Methods for separating interconnected sections of tubular knitted fabric
US3945096A (en) * 1973-03-22 1976-03-23 Samuel Miranker Process for removing separating thread from a web of knitted garment portions or the like
DE2341969A1 (de) * 1973-08-20 1975-03-06 Ingbuero Und Rationalisierungs Schneidverfahren und vorrichtung zur durchfuehrung des verfahrens
EP0006009A1 (fr) * 1978-05-31 1979-12-12 Leonard Thomas Frank Bryan Procédé et dispositif pour couper en morceaux une bande continue

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007069285A1 (fr) * 2005-12-16 2007-06-21 Mirco Magnani Dispositif automatique de finition de produits semi-finis par tricotage
CN114232318A (zh) * 2021-12-28 2022-03-25 广东溢达纺织有限公司 一种织造与切断同步方法和装置

Also Published As

Publication number Publication date
EP0063937A3 (fr) 1982-12-01

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19831109

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MCLEOD, ROBERT MCKENZIE