US3429491A - Break detector and shut down means - Google Patents

Break detector and shut down means Download PDF

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Publication number
US3429491A
US3429491A US636982A US3429491DA US3429491A US 3429491 A US3429491 A US 3429491A US 636982 A US636982 A US 636982A US 3429491D A US3429491D A US 3429491DA US 3429491 A US3429491 A US 3429491A
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United States
Prior art keywords
power
advancing
motor
strand
break
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Expired - Lifetime
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US636982A
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English (en)
Inventor
William Thomas Windley
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EIDP Inc
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EI Du Pont de Nemours and Co
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    • 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
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/028—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element
    • B65H63/032—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic
    • B65H63/0321—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators
    • 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

Definitions

  • This invention relates to the handling of strands advancing continuously from an operating source and, more particularly, to an apparatus for stopping the advancing means in a strand handling machine upon the occurrence of a strand break and for giving a selective indication of the break location.
  • strand as used herein is intended to include either a single filament, a bundle of such filaments or the threads, yarns, narrow webs and the like produced from filaments or staple fibers.
  • yarn contact sensing elements to detect strand breaks and to actuate stop motion equipment or cut-down devices, thereby interrupting downstream delivery from a given source to prevent wrap buildup. While these devices are operable. the yarn contact elements are trouble spots in that they wear rapidly and degrade yarn being sensed. Additionally, these yarn contact elements are insensitive to a low number of filament breaks in a bundle of filaments being handled.
  • FIGURE 1 is a schematic showing of one position of a mulli-position strand drawing machinein conjunction with electrical sensor control means;
  • FIG. 2 is an electrical schematic showing of the power sensor in combination with the draw roll motor.
  • one position of the strand handling machine chosen for purposes of illustration is a filamentary threadline drawing machine and includes generally, as components, an equipment frame 10, a first advancing roll or a feed roll 14 directly coupled to synchronous motor 18, a separator roller 16 in spaced relationship to feed roll 14, a second advancing roll or a draw roll 20 directly coupled to synchronous motor 24 on frame 10, a separator roller 22 in spaced relationship to the draw roll 20, a pair of yarn guides 12 and 26 and a power sensor 28 electrically connected to the power lines between three-phase power source 58 and motor 24.
  • the output terminals 42 and 44 of power sensor 28 are connected to a meter relay 46, that, in turn, is electrically connected to power source 52 and relay coil 50.
  • Relay 50 carries contactors 54 which are connected in power supply lines connecting power source 71 with audio and visual alarms 56 and 57, respectively, and in power supply lines connecting power source 58 with motor 18.
  • filamentary threadline 11 is advanced continuously from a spinneret 13 through a fixed guide 12 and around positively driven feed roll The yarn is then passed through guide 26 and traverse guide 27 onto bobbin 29.
  • Bobbin 29' and spinneret 13' are shown as representative of another position in a multl-position machine.
  • a portion of the total power consumed by the draw roll motor 24 is related to the restraining yarn tensions bet-ween draw roll motor 24 and feed roll motor 18.
  • Such tension related power can be readily determined by comparing load vs. no load conditions on motor 24 for various draw ratios and is monitored by power sensor 28 which produces an output signal at terminals 42, 44 which is in turn indicated by meter relay 46.
  • Meter relay 46 is adjusted so that, under a selected draw ratio load conditions of motor 24, the set of contacts 48 of the meter relay 46 are normally closed, thus energizing relay coil 50 through power source 52.
  • relay 50 When relay 50 is energized, contacts 54 carried by relay 50 are closed in the power feed lines between motor 18 and power source 58 with one contact open in power feed line connecting power source 71 with audio alarm 56 and visual warning light 57.
  • power sensor 28 is shown connected through input terminals 30, 31, 32, 33, 34 to 3-phase 220 v. power source 58 supplying power to motor 24.
  • Numeral 61 generally designates a Hall effect device which includes a Hall plate '60 disposed within the air gap of an iron core 62. Coils 64, 80 are placed around core 62 and each is connected in series with one phase of power supply 58 to provide magnetizing current I that are in phase with line current.
  • the primary winding 63 of transformer 66 is connected across one phase of voltage: source 58 with the secondary winding 65 connected to terminals 67 and 69 of Hall plate 60 to provide a control current I that is proportional to and in phase with line voltage.
  • D.C. supply 68 is a bias voltage paralleled by potentiometer 70 and connected in series with Hall plate terminal 72 and output terminal 42 to provide an incremental adjustment to the output of the Hall plate at output ter minals 42, 44.,
  • the Hall device 61 is sufiiciently sensitive to detect not only the complete loss of threadline 11 but also the breakage of a low number of filaments in a multifilament threadline. It is recognized that in. the illustrated embodiment if a low number of filaments in a multifilament bundle should break the shutting down of the feed roll motor will cause the remainder of the threadline to be pulled apart by the continued operation of the draw roll motor, which could be harmful to the handling equipment. To overcome this, it is contemplated that the solenoid 50 may be connected to and used to actuate a threadline cutdown device of the type disclosed by Edwards in US. Patent 3,090,268.
  • solid state switching equipment is readily adaptable for detecting changes in the output of the power sensor and initiating operation of switching means to shut down advancing roll motors and to positionally indicate fault locations.
  • an apparatus for detecting a break in a strand advancing betwen the rolls and shutting down the first advancing rol-l motor comprising:
  • a power sensor having input terminals and output terminals, said input terminals being connected to the second advancing roll motor, said sensor providing a signal at said output terminals proportional to the power input to the second advancing roll motor;
  • -(b) switching means connected between the output terminals of the power sensor and the first advancing roll motor for de-energizing t-he first advancing roll motor upon a change in signal from the power sensor due to a change in power input to the second advancing roll motor.
  • a strand drawing machine having a plurality of positions, each including a feed roll and a draw roll driven by respective three-phase electric motors, an apparatus for detecting the breaking of one or more filaments in a bundle of filaments being drawn between the rolls, shutting down the feed roll motor, and selectively indicating the positional location of the filament break, said apparatus comprising:
  • a Hall efiect device having input terminals and output terminals, said input terminals being connected to the draw roll motor, said Hall effect device providing a signal at said output terminals proport-ional to the power input to the draw roll motor;
  • signalling means connected to said means for deener-gizing the feed roll motor for signalling a filament break and selectively indicating the positional location of the break, said signalling means being operative upon de-energization of said feed roll motor.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Control Of Multiple Motors (AREA)
US636982A 1967-05-08 1967-05-08 Break detector and shut down means Expired - Lifetime US3429491A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63698267A 1967-05-08 1967-05-08

Publications (1)

Publication Number Publication Date
US3429491A true US3429491A (en) 1969-02-25

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US636982A Expired - Lifetime US3429491A (en) 1967-05-08 1967-05-08 Break detector and shut down means

Country Status (8)

Country Link
US (1) US3429491A (en:Method)
BE (1) BE713788A (en:Method)
CH (1) CH463229A (en:Method)
DE (1) DE1774234A1 (en:Method)
FR (1) FR1565819A (en:Method)
GB (1) GB1172205A (en:Method)
LU (1) LU56030A1 (en:Method)
NL (1) NL6804302A (en:Method)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486319A (en) * 1968-06-24 1969-12-30 Parks Cramer Co Apparatus and method for detecting,piecing-up and reporting ends down on spinning machines
US3558069A (en) * 1969-04-01 1971-01-26 Phelps Dodge Copper Prod Safety system for strand take-up machines
US3650133A (en) * 1968-09-17 1972-03-21 Behrens Ag C Longitudinal carriage drive for co-ordinates tables in machine tools, particularly punching machines
US3879756A (en) * 1973-03-13 1975-04-22 Economy Co Automatic drive stop control utilizing motor voltage transients
US4238064A (en) * 1978-07-24 1980-12-09 Ppg Industries, Inc. System for actuating glass ribbon, cross scoring and snapping equipment
FR2464455A1 (fr) * 1979-07-03 1981-03-06 Westinghouse Electric Corp Installation numerique de detection de rupture de bande notamment pour un laminoir
US4630213A (en) * 1983-09-30 1986-12-16 E. I. Du Pont De Nemours And Company Method of reducing throughput of spinning pumps
US4846060A (en) * 1988-07-25 1989-07-11 Iotec Manufacturing, Inc. Printing web tensioning system
FR2630721A1 (fr) * 1988-05-02 1989-11-03 Kugelfischer G Schaefer & Co Procede de surveillance d'une eventuelle rupture de fil dans un ensemble unitaire de machines textiles
US5244067A (en) * 1992-12-21 1993-09-14 The Whitaker Corporation Wire runout and splice detector for lead-making machines
CN110255252A (zh) * 2019-05-31 2019-09-20 江苏贝尔特福新材料有限公司 一种验布打卷机门幅控制报警装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410757A1 (de) * 1982-09-24 1985-09-26 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Vorrichtung zum stillsetzen einzelner vorlagespulen bei betriebsstoerung an einer textilmaschine
DE3235406A1 (de) * 1982-09-24 1984-03-29 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Vorrichtung zum stillsetzen einzelner vorlagespulen bei betriebsstoerung an einer textilmaschine
DE4113565C2 (de) * 1991-04-25 1994-05-11 Zinser Textilmaschinen Gmbh Verfahren und Vorrichtung zur Überwachung der Verzugskraft in Streckwerken von Spinnereimaschinen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361314A (en) * 1964-07-15 1968-01-02 Reiners Walter Yarn guard for checking yarn travel in a textile machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361314A (en) * 1964-07-15 1968-01-02 Reiners Walter Yarn guard for checking yarn travel in a textile machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486319A (en) * 1968-06-24 1969-12-30 Parks Cramer Co Apparatus and method for detecting,piecing-up and reporting ends down on spinning machines
US3650133A (en) * 1968-09-17 1972-03-21 Behrens Ag C Longitudinal carriage drive for co-ordinates tables in machine tools, particularly punching machines
US3558069A (en) * 1969-04-01 1971-01-26 Phelps Dodge Copper Prod Safety system for strand take-up machines
US3879756A (en) * 1973-03-13 1975-04-22 Economy Co Automatic drive stop control utilizing motor voltage transients
US4238064A (en) * 1978-07-24 1980-12-09 Ppg Industries, Inc. System for actuating glass ribbon, cross scoring and snapping equipment
FR2464455A1 (fr) * 1979-07-03 1981-03-06 Westinghouse Electric Corp Installation numerique de detection de rupture de bande notamment pour un laminoir
US4272688A (en) * 1979-07-03 1981-06-09 Westinghouse Electric Corp. Strip break detector system
US4630213A (en) * 1983-09-30 1986-12-16 E. I. Du Pont De Nemours And Company Method of reducing throughput of spinning pumps
FR2630721A1 (fr) * 1988-05-02 1989-11-03 Kugelfischer G Schaefer & Co Procede de surveillance d'une eventuelle rupture de fil dans un ensemble unitaire de machines textiles
US4846060A (en) * 1988-07-25 1989-07-11 Iotec Manufacturing, Inc. Printing web tensioning system
US5244067A (en) * 1992-12-21 1993-09-14 The Whitaker Corporation Wire runout and splice detector for lead-making machines
CN110255252A (zh) * 2019-05-31 2019-09-20 江苏贝尔特福新材料有限公司 一种验布打卷机门幅控制报警装置

Also Published As

Publication number Publication date
DE1774234A1 (de) 1971-07-29
LU56030A1 (en:Method) 1968-09-03
FR1565819A (en:Method) 1969-05-02
BE713788A (en:Method) 1968-09-16
CH463229A (de) 1968-09-30
GB1172205A (en) 1969-11-26
NL6804302A (en:Method) 1968-11-11

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