EP0077309A2 - Schussfadenauswahlvorrichtung bei Webmaschinen - Google Patents

Schussfadenauswahlvorrichtung bei Webmaschinen Download PDF

Info

Publication number
EP0077309A2
EP0077309A2 EP82850125A EP82850125A EP0077309A2 EP 0077309 A2 EP0077309 A2 EP 0077309A2 EP 82850125 A EP82850125 A EP 82850125A EP 82850125 A EP82850125 A EP 82850125A EP 0077309 A2 EP0077309 A2 EP 0077309A2
Authority
EP
European Patent Office
Prior art keywords
weft
terminal
counter
selection
selector
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Withdrawn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
EP82850125A
Other languages
English (en)
French (fr)
Other versions
EP0077309A3 (de
Inventor
Yoshitaka Fujita
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.)
Tsudakoma Corp
Original Assignee
Tsudakoma Industrial 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 Tsudakoma Industrial Co Ltd filed Critical Tsudakoma Industrial Co Ltd
Publication of EP0077309A2 publication Critical patent/EP0077309A2/de
Publication of EP0077309A3 publication Critical patent/EP0077309A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/38—Weft pattern mechanisms

Definitions

  • the present invention relates to a weft selector for looms, and more particularly relates to an improved electric device for selecting wefts following a given programme on weaving looms.
  • the weft selector is provided with an electric construction in which a number of weft information signals stored at selection fixers are sequentially taken out therefrom one at one cycle rotation of the loom, and used for generation of weft selection signals following a given programme.
  • the attached drawing is a block diagrm of one embodiment of the weft selector in accordance with the present invention.
  • weft selector in accordance with the present invention is shown in the attached drawing in which eight sorts of different wefts are used for weaving a fabric and, as a consequence, have to be selected properly. Selection of a weft is carried out by activating corresponding one of eight solenoids Sl to S8. That is, upon activation of one solenoid, a known weft control mechanism (not shown) operates to select a corresponding weft for weft insertion.
  • the weft selector includes an OR-gate 1.
  • One input terminal of the OR-gate 1 is connected to a supply source of clock pulse signals CP whereas the other input terminal is connected to a switch SW1.
  • the clock pulse supply source is of a conventional type which generates one clock pulse signal CP at one cycle rotation of the loom.
  • the output terminal of the OR-gate 1 is connected to the count-up terminal UP of a counter 2 which takes the form of a divide by n presettable counter.
  • the count-down terminal of the counter 2 is connected to a switch W2 whereas the lord terminal is connected to a supply source of lord signals LS.
  • the other terminals of both switches SW1 and SW2 are connected to supply sources of pulse signals PS1 and PS2, respectively.
  • the counter 2 counts up when the switch SW1 is closed, and counts down when the switch SW2 is closed.
  • the count value of the ocunter 2 can be adjusted as required by properly controlling the associates switches SW1 and SW2.
  • the supply source of the lord signals LS generates one pulse signal when the electric power source for the weft selector is turned on. Every time a lord signal LS is given to the counter 2, the content of the later described random access memory 3 is passed to the read-in terminal Ra of the counter 2.
  • This read-in terminal Ra of the counter 2 is connected to the read-out terminal Rb of the memory 3 so that the content of the memory 3 should be passed to the counter 2 every time the electric power source is turned on.
  • the latch terminal L of the memory 3 is connected to a supply source of latch signals LaS which generates one pulse signal when the electric power source is turned off.
  • the read-in terminal Rc of the memory 3 is connected to the output terminal Q of the counter 2. The content of the counter 2 always appears at the output terminal Q so that, when the electric power source is turned off, the current count value of the counter 2 should be stored in the memory 3.
  • the above-described output terminal Q of the counter 2 is also connected to the input terminal of a decoder 4 so that the content of the counter 2 from the output terminal Q should be decoded to decimal digits.
  • the decoder 4 generates a signal from one of its output terminals Q 0 to Q n-1 depending one the current count value of the counter 2. More specifically, the signal appears at the output terminal Q O of the decoder 4 when the current count value at the counter 2 is equal to 0 whereas the signal appears at the output terminal Q 1 when the current count value at the counter 2 is equal to 1.
  • the output terminals Q 0 to Q n-1 of the decoder 4 are connected to the input terminals Ia to In of corresponding selection fixers 5a to 5n, respectively.
  • the selection fixers 5a to 5n take the form of digital switches.
  • Each selection fixer generates an output signal at one of its output terminals which corresponds to the value fixed. In other words, the output signal appears at the first output terminal when the value fixed at the selection fixer involved is equal to 1, at the second terminal when the value fixed is equal to 2, and at the ninth output terminal when the value fixed is equal to 0.
  • each selection fixer is provided with nine output terminals.
  • the first to eighth output terminals of the selection fixers 5a to 5n are connected, respectively, to the input terminals of drivers 6a to 6h which take the form of tri-state elements.
  • the control input terminals of the drivers 6a to 6h are connected to the above-described supply source of clock pulse signals whereas the output terminals of the drivers 6a to 6h are connected, respectively, to the solenoids Sl to S8.
  • the ninth output terminals of the selection fixers 5a to 5n which correspond to the value fixed equal to 0, are connected to the clear terminal CLR of the counter 2 so that the count value at the counter 2 should become to zero upon receipt of an input signal at the clear terminal CLR.
  • the output terminal Q of the counter 2 is connected to an indicator 7 which indicates the current count value of the counter 2 and a selection fixer currently in operation.
  • the weft selector with the above-described construction operates as follows.
  • the number of the selection fixers to be used should be chosen in accordance with the number of operational steps within a cycle which is determined by the sequence of weft selection. It is herein assumed that n sets of selection fixers are prepared and necessary number of selection fixers are sorted out therefrom properly.
  • the numbers of selection are designated by allotting them as the values fixed (0 to 8) to the selection fixers 5a to 5n. That is, when one cycle of weft selection includes i (i ⁇ n) operational steps, the value fixed for each of the selection fixers 5a to 5i is allotted to one of 1 to 8 and at least the value fixed for the selection fixer 5 i+1 is set to 0 among the selection fixers 5 i+1 or below.
  • the electric power source of the loom is turned on the generate a lord signal which passes the content of the memory 3 to the counter 2. Since the content of the memory 3 is unknown at start of the loom running, the count value of the counter 2 has to be checked by refering to the indicator 7. When necessary, the switch SW1 or SW2 is operated to match the count value to the given sequence. Assuming that the count value of the counter 2 has been set to 0, a signal appears at the output terminal Q of the decoder 4 in order to be passed to the input terminal Ia of the selection fixer 5a.
  • an output signal appears at one of the first to ninth output terminals of the selection fixer 5a which corresponds to its value fixed. For example, when the value fixed for the selection fixer 5a is equal to 1, the output signal appears at the first output terminal of the selection fixer 5a, and is passed to the input terminal of the driver 6a. Nevertheless, the corresponding solenoid Sl is not yet actiated due to no input of the clock pulse signal CP.
  • the clock pulse signal CP is also given to the count up terminal of the counter 2 via the OR-gate 1 and the count value at the counter 2 becomes equal to 1.
  • the output signal at the output terminal Q o of the decoder 4 disappears, and an output signal now appears at the output terminal Q 1 .
  • This output signal is then passed to the input terminal Ib of the selection fixer 5b which in turn generates on output signal at one of its first to ninth output terminals corresponding to the value fixed allotted thereto. If the value fixed for the selection fixed 5b is equal to 8, an output signal is passed to the input terminal of the driver 6h.
  • the above-described clock pulse signal CP is concurrently assigned to the control terminals of the drivers 6a to 6h, the driver 6h generates an output signal which activates the solenoid S8 for selection of a corresponding weft.
  • the count value at the counter 2 becomes equal to i and the decoder 4 generates an output signal at its outut terminal Qi which is passed to the selection fixer 5i.
  • the value fixed for the selection fixer 5(i+l) is set to 0
  • a signal is assigned from the ninth output terminal of the selection fixer 5(i+1) to the clear terminal CLR of the counter 2 and the count value at the counter 2 becomes equal to zero.
  • the signal at the output terminal Qi of the decoder 4 disappears and a new output signal appears at the output terminal Q O .
  • a signal is passed again from the first output terminal of the selection fixer 5a to the driver 6a which activates the solenoid Sl for selection of a corresponding weft.
  • the value fixed for the i-th selection fixer 5i (i ⁇ n) is set to 0.
  • the selection fixers 5a to 5n are all given values fixed other than 0, signals are in sequence assigned, one at one cycle rotation of the loom, from the decoder 4 to the input terminals Ia to In of the selection fixers 5a to 5n for sequential selection of different wefts in accordance with the allotted value fixed. The moment the count value of the counter 2 reaches n, it returns to zero so that weft selection should repeat cyclically whilst each cycle including n sets of operational steps in the programmed sequence.
  • a latch signal LaS is passed to the latch terminal of the memory 3 and the output signal from the counter 2 is stored at the memory 3 via the read-in terminal Rc.
  • a lord signal LS is given to the lord terminal of the counter 2 which thereupon catches the content of the memory 3 via the read-in terminal Ra. In this way, the count value at the counter 2 before the turning-off of the electric power source-can be restored when the electric power source is again turned on in order to restart the loom running immediately after the electric power source has been turned on. This is enabled by use of the random access memory 3 connected to the counter 2.
  • wefts are selected in any programmed sequence in accordance with the present invention by properly allotting values fixed to the selection fixers 5a to 5n.
  • selection fixers are used for storing weft information signals which are read out therefrom, one at one cycle rotation of the loom, in programmed sequence by use of the clock pulse supply source, the counter and the decoder.
  • the weft selector of the present invention may be provided with a further construction in which weft information signals are stored in a tape recorder tape, a card tape reader or a mark card reader, and read out therefrom in programmed sequence by use of a drive and read-out mechanism including a pulse motor.
  • the selection fixers may take the form of random access memories each provided with a reader. In this case, it is advantageous to prepare a weft selection pattern which should be read Sn random access memories of a number of looms.
  • a random access memory with batteryback-up may be used for same purposes.
  • the indicator may be replaced by a device provided with luminescent diodes the number of which corresponds to that of the selection fixers used for the above-described embodiment.
  • the weft selector of the present invention assures reliable operation with minimal malfunction inherent to conventional mechanical weft selectors using card-peck combinations.
  • use of the electronic system in accordance with the present invention enables the weft selector to well follow high speed running of looms.
  • Use of the selection fixers enables easy shift in type of fabrics to be woven. Since the number of operational steps in one cycle can be rendered considerably large, troubles previously needed for control of cards for so-called long repeats can be greatly alleviated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP82850125A 1981-06-10 1982-06-07 Schussfadenauswahlvorrichtung bei Webmaschinen Withdrawn EP0077309A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP56089952A JPS57205553A (en) 1981-06-10 1981-06-10 Weft yarn selector of loom
JP89952/81 1981-06-10

Publications (2)

Publication Number Publication Date
EP0077309A2 true EP0077309A2 (de) 1983-04-20
EP0077309A3 EP0077309A3 (de) 1984-09-26

Family

ID=13985029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82850125A Withdrawn EP0077309A3 (de) 1981-06-10 1982-06-07 Schussfadenauswahlvorrichtung bei Webmaschinen

Country Status (3)

Country Link
EP (1) EP0077309A3 (de)
JP (1) JPS57205553A (de)
KR (1) KR870001858B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175318A (en) * 1985-05-15 1986-11-26 Shih Chou Wang Weft selectors
EP0461524A1 (de) * 1990-06-11 1991-12-18 NUOVA VAMATEX S.p.A. Schussfadenzubringvorrichtung für Greiferwebmaschinen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60110954A (ja) * 1983-11-18 1985-06-17 株式会社豊田自動織機製作所 無杼織機の緯入れ監視装置
CN102493105B (zh) * 2011-11-30 2013-06-12 北京中纺精业机电设备有限公司 一种电子选纬器输出短路预防和报警装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1079385A (en) * 1964-06-30 1967-08-16 Ball Brothers Co Inc Glass forming machine with automatic control system
GB1289035A (de) * 1970-09-10 1972-09-13
DE2556537A1 (de) * 1975-12-16 1977-06-30 Elmeg Digitale steuerschaltung
DE2818269A1 (de) * 1978-04-26 1979-11-08 Kieninger & Obergfell Elektrisches programmsteuergeraet
FR2432184A1 (fr) * 1978-07-28 1980-02-22 Amf Inc Directeur de sequence a microprocesseur
GB2075717A (en) * 1980-04-21 1981-11-18 Mitsubishi Heavy Ind Ltd Cleaning system with failure warning

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE831972A (nl) * 1975-07-31 1975-11-17 Inrichting voor het besturen van beweegbare elementen van ten minste een weefgetouw

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1079385A (en) * 1964-06-30 1967-08-16 Ball Brothers Co Inc Glass forming machine with automatic control system
GB1289035A (de) * 1970-09-10 1972-09-13
DE2556537A1 (de) * 1975-12-16 1977-06-30 Elmeg Digitale steuerschaltung
DE2818269A1 (de) * 1978-04-26 1979-11-08 Kieninger & Obergfell Elektrisches programmsteuergeraet
FR2432184A1 (fr) * 1978-07-28 1980-02-22 Amf Inc Directeur de sequence a microprocesseur
GB2075717A (en) * 1980-04-21 1981-11-18 Mitsubishi Heavy Ind Ltd Cleaning system with failure warning

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175318A (en) * 1985-05-15 1986-11-26 Shih Chou Wang Weft selectors
EP0461524A1 (de) * 1990-06-11 1991-12-18 NUOVA VAMATEX S.p.A. Schussfadenzubringvorrichtung für Greiferwebmaschinen

Also Published As

Publication number Publication date
JPS57205553A (en) 1982-12-16
EP0077309A3 (de) 1984-09-26
KR870001858B1 (ko) 1987-10-17
KR840000696A (ko) 1984-02-27

Similar Documents

Publication Publication Date Title
US3872808A (en) Sewing machine stitch pattern selection from data stored in a multiple pattern static memory
US4227247A (en) Integrated circuit controller programmable with unidirectional-logic instructions representative of sequential wire nodes and circuit elements of a ladder diagram
US3903515A (en) Method of and apparatus for controlling the performance of timed functions
US4623961A (en) Programmable controller having automatic contact line solving
EP0077309A2 (de) Schussfadenauswahlvorrichtung bei Webmaschinen
US4075567A (en) Broadcast receiver tuning circuit with station memory
US4114190A (en) Electronic programmer having automatic program selection
US2963628A (en) Switching sequencer
US4178634A (en) Programmable logic controller
US4501008A (en) Device for electronically controlling loom components
US3820082A (en) Data storage means for electrical control systems particularly for knitting machines
US4144827A (en) Expanded entry for programmable memory of a sewing machine
US3674991A (en) Automatic programming device for looms
US4187789A (en) Sewing machine with an electronic pattern stitch control system
US4076399A (en) Control mechanism for a plurality of slide projectors
GB1508360A (en) Channel tuning and indicating arrangements
US4651663A (en) Device for setting stitching conditions in an electronic control sewing machine
US3657703A (en) Code-responsive control receiver
US3568725A (en) Dobbies
JPS63175383A (ja) 記憶調光装置
WO1981002603A1 (en) Electronic locks for doors
GB1591522A (en) Apparatus for controlling a plurality of looms or knitting machines
US3680602A (en) Looms for weaving
US3477046A (en) Manual code pulsing magnetic reed switch
US3719926A (en) Tape program control

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850103

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FUJITA, YOSHITAKA