EP0537111A1 - Vorrichtung zum Detektieren der Kettenspannung in Webmaschinen - Google Patents

Vorrichtung zum Detektieren der Kettenspannung in Webmaschinen Download PDF

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Publication number
EP0537111A1
EP0537111A1 EP92810750A EP92810750A EP0537111A1 EP 0537111 A1 EP0537111 A1 EP 0537111A1 EP 92810750 A EP92810750 A EP 92810750A EP 92810750 A EP92810750 A EP 92810750A EP 0537111 A1 EP0537111 A1 EP 0537111A1
Authority
EP
European Patent Office
Prior art keywords
tension
warp
detecting
roller
warp yarns
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Withdrawn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
EP92810750A
Other languages
English (en)
French (fr)
Inventor
Hiroshi C/O Kabushiki Kaisha Toyoda Honda
Yoshifumi c/o Kabushiki Kaisha Toyoda Umemura
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.)
Toyota Industries Corp
Original Assignee
Toyoda Jidoshokki Seisakusho KK
Toyoda Automatic Loom Works 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 Toyoda Jidoshokki Seisakusho KK, Toyoda Automatic Loom Works Ltd filed Critical Toyoda Jidoshokki Seisakusho KK
Publication of EP0537111A1 publication Critical patent/EP0537111A1/de
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/18—Devices for indicating warp tension

Definitions

  • the present invention relates to a warp tension detecting apparatus in a loom wherein the tension of warp yarns being let off from a warp beam is detected and the rotation of the warp beam is controlled on the basis of information resulting from the detection of warp tension.
  • a warp tension detecting apparatus in a weaving loom comprising support member swingably provided on frame of the loom, a tension roller supported by said support member for guiding warp yarns while applying tension thereto, means for absorbing variation of warp tension by allowing said support member to swing in synchronism with the shedding movement of said warp yarns to thereby change the path of warp yarns over said tension roller, and means supported by said support member for contact with tho warn yarng moving over gaid tension for detecting the tension of said warp yarns.
  • the tension roller and the warp tension detecting means can swing integrally together with the support member and the detecting means can detect the warp tension directly without intervention of the tension roller. Therefore, the warp tension detecting means is free from the influence of the tension roller such as the force of inertia developed by its swinging motion. The result is that, unlike the conventional apparatus which detects apparent warp tension under the influence exerted by the tension roller, the warp tension detecting means according to the invention is capable of detecting true warp tension.
  • a number of warp yarns T1, T2 unwound from a warp beam 1 are fed toward a weaving station 4 of the loom by way of a back roller 2 and tension roller 3.
  • the warp yarns T1, T2 are woven with weft yarns (not shown) at the weaving station 4 into a fabric W, which is moved via an expansion bar 6, surface roller 7 and press roller 8 to be taken up round a winding shaft 9.
  • the back roller 2 which is of a hollow construction as shown in FIG. 1, is rotatably supported on loom frames by way of a shaft 2a extending through the back roller 2.
  • a pair of L-shaped tension levers 11A, 11b having arm portions 14A, 14B are swingably supported on the shaft 2a adjacently to the back roller 2, and a pair of easing levers 12A, 12B is supported on the shaft 2a for integral swinging with the tension levers 11A, 11B.
  • the tension roller 3, which is also made hollow, is rotatably supported by and between the upper distal ends of the tension levers 11A, 11B.
  • Easing springs 13A, 13B are installed between the respective easing levers 12A, 12B and loom frame.
  • the tension levers 11A, 11B and easing levers 12A, 12B are swung integrally about the shaft 2a together with the tension roller 3 then swinging alternately toward and away from the weaving station 4 in synchronism with the periodic shedding movement of warp yarns T1, T2 and beating-up operation of a reed of the loom.
  • the tension of warp yarns T1, T2 is maintained substantially constant independently of the shedding and beating operation of the loom in the manner as well known in the art.
  • a support bar 10 having at its opposite ends a pair of pressure detectors 15A, 15B.
  • a tension detecting roll 16 is supported on the pressure detectors 15A, 15B. As shown in FIGS. 1 and 2, this tension detecting roll 16 is located between the back roller 2 and tension roller 3 at such position where it is kept in contact with warp yarns T1, T2 for detecting the warp tension and then transmitting the same to the pressure detectors 15A, 15B.
  • the pressure detectors 15A, 15B are electrically connected through an amplifier 17 and latch 18 to a comparator 19 to which an input device 20 for setting the desired tension is electrically connected.
  • the comparator 19 is operable to compare the information of warp tension received from the pressure detectors 15A, 15B with the tension setting stored in the device 20 and also to generate a compensation signal, which corresponds to the tension difference as obtained through the comparison, to an adder 22 through an A/D converter 21.
  • the adder 22 is operable to add a signal from a warp beam driving servomotor 23, which signal is representative of the rotational speed of that servomotor, and the compensation signal transmitted from the comparator 19 to thereby transmit a control signal back to the servomotor 23 through an amplifier 24 for feedback controlling.
  • the rotational speed of the servomotor 23, i.e. the rate at which warp yarns T1, T2 are let off from the warp beam 1, is controlled.
  • warp tension detecting instrument used in conventional apparatus has been subjected to load due to the inertia force of its tension roller and, therefore, required to be made with sufficient strength to resist vibration and other harmful influences, which has made the instrument expensive.
  • the pressure detectors 15A, 15B which only have to carry the load of warp tension does not require the use of robust and hence expensive detecting instrument. Additionally, because the detectors can be used for a prolonged period of service, the embodiment is advantageous in terms of economy of the pressure detecting instrument.
  • the tension roller 3 does not have to incorporate therein a heavy part like a shaft extending therethrough. This can help reduce the moment of inertia of the swinging members such as the tension levers 11A, 11B, easing levers 12A, 12B, tension roller 3, pressure detectors 15A, 15B and tension detecting rolls 16. Accordingly, the responsibility in swinging motion of these members, particularly the responsibility of the tension roller 3 can be improved.
  • the tension roller, support member and warp tension detecting means can swing as an integral unit. Therefore, the position of the tension detecting means relative to the tension roller is unchanged by the swinging motion of the tension roller, with the result that the tension detecting means is free from the influence of the force of inertia developed by the tension roller and thus capable of detecting true warp tension.
  • the tension levers 11A, 11B and easing levers 12A, 12B are supported on the loom frame by way of the shaft 2a for integral swinging movement.
  • the back roller 2 is rotatably supported by the shaft 2a, and the tension levers 11A, 11B carry rotatably at their upper ends the tension roller 3.
  • the arm portions 14A, 14B of the tension levers have the pressure detectors 15A, 15B and the tension detecting roll 16.
  • the tension detecting roll 16 is adapted to detect the tension of warp yarns T1, T2 and transmit the tension to the pressure detectors 15A, 15B.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP92810750A 1991-10-11 1992-10-06 Vorrichtung zum Detektieren der Kettenspannung in Webmaschinen Withdrawn EP0537111A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3264095A JPH0598540A (ja) 1991-10-11 1991-10-11 織機における経糸張力検出装置
JP264095/91 1991-10-11

Publications (1)

Publication Number Publication Date
EP0537111A1 true EP0537111A1 (de) 1993-04-14

Family

ID=17398442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810750A Withdrawn EP0537111A1 (de) 1991-10-11 1992-10-06 Vorrichtung zum Detektieren der Kettenspannung in Webmaschinen

Country Status (2)

Country Link
EP (1) EP0537111A1 (de)
JP (1) JPH0598540A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002052082A1 (de) * 2000-12-27 2002-07-04 Textilma Ag Vorrichtung zur überwachten zuführung von kettfäden zu einer web- oder ketten-wirkmaschine
EP1544338A3 (de) * 2003-02-19 2006-04-05 Kabushiki Kaisha Toyota Jidoshokki Vorrichtung zum Ermitteln der Kettspannung für Webmaschine
CN104878509A (zh) * 2015-04-08 2015-09-02 杭州创兴织造设备科技有限公司 新型定量送纱装置及其工作方法
CN105734791A (zh) * 2015-04-08 2016-07-06 杭州创兴云智能设备科技股份有限公司 一种送纱装置的定量送纱方法
CN107761229A (zh) * 2017-11-30 2018-03-06 佛山慈慧通达科技有限公司 一种整层经纱恒张力控制装置
CN114808265A (zh) * 2022-05-24 2022-07-29 五洋纺机有限公司 一种防卡死的纱线张力调节装置
CN115029841A (zh) * 2022-07-06 2022-09-09 天津工业大学 一种织造间隔织物特种织机送经系统的张力施加与检测装置
CN119121489A (zh) * 2024-10-12 2024-12-13 山东日发纺织机械有限公司 一种织机的控制系统异常检测方法、装置、设备及介质
CN119308060A (zh) * 2024-11-21 2025-01-14 青岛金纺允春机械有限公司 经纱张力调节装置及织布机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102677373A (zh) * 2012-06-12 2012-09-19 江苏万工科技集团有限公司 一种上下双经轴装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE777545A (nl) * 1971-12-30 1972-04-17 Fond Et Ateliers Michel Van De Afwikkelsysteem van de kettingdraden van weefmachines.
CH559793A5 (en) * 1973-05-11 1975-03-14 Patax Trust Reg Warp yarn let-off motion control - has a control unit for drive motor acting on positioning of the back rest
DE3833685A1 (de) * 1988-10-04 1990-04-05 Mertens & Frowein Gmbh & Co Kg Vorrichtung zur kettfadenspannung an webmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE777545A (nl) * 1971-12-30 1972-04-17 Fond Et Ateliers Michel Van De Afwikkelsysteem van de kettingdraden van weefmachines.
CH559793A5 (en) * 1973-05-11 1975-03-14 Patax Trust Reg Warp yarn let-off motion control - has a control unit for drive motor acting on positioning of the back rest
DE3833685A1 (de) * 1988-10-04 1990-04-05 Mertens & Frowein Gmbh & Co Kg Vorrichtung zur kettfadenspannung an webmaschinen

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002052082A1 (de) * 2000-12-27 2002-07-04 Textilma Ag Vorrichtung zur überwachten zuführung von kettfäden zu einer web- oder ketten-wirkmaschine
EP1544338A3 (de) * 2003-02-19 2006-04-05 Kabushiki Kaisha Toyota Jidoshokki Vorrichtung zum Ermitteln der Kettspannung für Webmaschine
CN1306088C (zh) * 2003-02-19 2007-03-21 株式会社丰田自动织机 一种织机的经纱张力检测机构
CN105734791B (zh) * 2015-04-08 2017-05-17 杭州创兴云智能设备科技股份有限公司 一种送纱装置的定量送纱方法
CN105624892A (zh) * 2015-04-08 2016-06-01 杭州创兴云智能设备科技股份有限公司 一种定量送纱装置
CN105734791A (zh) * 2015-04-08 2016-07-06 杭州创兴云智能设备科技股份有限公司 一种送纱装置的定量送纱方法
CN104878509A (zh) * 2015-04-08 2015-09-02 杭州创兴织造设备科技有限公司 新型定量送纱装置及其工作方法
CN107761229A (zh) * 2017-11-30 2018-03-06 佛山慈慧通达科技有限公司 一种整层经纱恒张力控制装置
CN114808265A (zh) * 2022-05-24 2022-07-29 五洋纺机有限公司 一种防卡死的纱线张力调节装置
CN114808265B (zh) * 2022-05-24 2024-04-16 五洋纺机有限公司 一种防卡死的纱线张力调节装置
CN115029841A (zh) * 2022-07-06 2022-09-09 天津工业大学 一种织造间隔织物特种织机送经系统的张力施加与检测装置
CN115029841B (zh) * 2022-07-06 2024-02-20 天津工业大学 一种织造间隔织物特种织机送经系统的张力施加与检测装置
CN119121489A (zh) * 2024-10-12 2024-12-13 山东日发纺织机械有限公司 一种织机的控制系统异常检测方法、装置、设备及介质
CN119308060A (zh) * 2024-11-21 2025-01-14 青岛金纺允春机械有限公司 经纱张力调节装置及织布机

Also Published As

Publication number Publication date
JPH0598540A (ja) 1993-04-20

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