US3419050A - Take-up roller mechanism in a weaving loom - Google Patents

Take-up roller mechanism in a weaving loom Download PDF

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Publication number
US3419050A
US3419050A US608677A US60867767A US3419050A US 3419050 A US3419050 A US 3419050A US 608677 A US608677 A US 608677A US 60867767 A US60867767 A US 60867767A US 3419050 A US3419050 A US 3419050A
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US
United States
Prior art keywords
take
roller
cloth
tension
web
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
US608677A
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English (en)
Inventor
Yoshida Masaru
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 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 Automatic Loom Works Ltd filed Critical Toyoda Automatic Loom Works Ltd
Application granted granted Critical
Publication of US3419050A publication Critical patent/US3419050A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D03D49/20—Take-up motions; Cloth beams

Definitions

  • a take-up apparatus for a weaving loom for a take-up roller has a power transmission mechanism for rotating the take-up roller and a cloth tension detecting means for detecting variation in the tension of the cloth being conveyed toward the take-up roller and adjusting means coupled to the brake band around a rotary body in the power transmission mechanism.
  • the action of the adjusting means under the control of the tension detecting means adjusts the braking action of the brake band for stopping the operation of the power transmission mechanism when the tension becomes too large.
  • a take-up mechanism is a mechanism for winding up the web of cloth woven by a weaving loom upon a take-up roller, the cloth being conveyed under appropriate tension from the breast beam through the surface roller and a plurality of guide rollers toward the take-up roller. Any vari ation of the web tension will frequently cause formation of longitudinal wrinkles or lines in the web of cloth due to difference of tension between its runs of conveyance.
  • the present invention relates to a new apparatus for taking-up the web of cloth in such a manner that the web of cloth conveyed toward the take-up roller will be maintained under substantially constant tension, regardless of the increasing diameter of the growing take-up roller, so that it is possible to prevent the formation of Wrinkles or lines in the web of cloth being wound upon the take-up roller.
  • the principal object of the present invention is to provide an improved apparatus for taking-up the web of cloth in such manner that the above mentioned drawback is removed.
  • Another object of the invention is to provide an improved take-up roller mechanism in which the web of cloth is maintained under predetermined tension also during the rewinding motion of the take-up roller.
  • FIG. 1 is a longitudinal sectional view of a part of the take-up mechanism accordin g to this invention
  • FIG. 2 is a sectional side view thereof, the section being taken along line H-II of FIG. 1;
  • FIG. 3 is a perspective view of the mechanism shown in FIG. 2.
  • the take-up roller 1 has a trunnion 2.
  • a stationary shaft 3 is fixed to a frame F of the weaving loom and arranged in line with said trunnion 2.
  • a sun gear 5 having a hub 5' is journ aled on the shaft 3.
  • a gear 6 keyed onto said hub 5' is connected to any source 3,419,050 Patented Dec. 31, 1968 of power to be driven thereby through a gear 7 to transmit rotation to the take-up roller 1.
  • FIG. 1 illustrating a take-up roller and a driving mechanism therefor
  • a rotatable shaft 23 is adapted to be driven from the source of power through an appropriate mechanism, and it has an arm 24 fixed thereto and carrying a pawl pivotally mounted at 26 and engaged with a ratchet wheel 27.
  • the ratchet wheel 27 and the said gear 7 mes-hing with the gear 6 are rigidly united together and are loosely mounted on said shaft 23.
  • the pawl 25 is maintained in engagement with the ratchet wheel 27, so that the rotation of the shaft 23 is transmitted to the gear 6 through the gear 7, thereby rotating the gear 5.
  • the rotation of the shaft 23 in the direction opposite to the direction of the arrow is effected at the time of rewinding of the cloth. This operation will be described hereinafter.
  • a planet carrier disc 8 is journaled on the shaft 3 and it carries pins 91 and 91 for two planetary pinions 9 and 9, respectively, said planetary pinions meshing with the sun gear 5 (FIG. 1).
  • a driving disc 10 loosely mounted on the trunnion 2 of the take-up roller 1.
  • the driving disc 10 has a notch 10, with which a projection 11 of a driven member 11 fixed to the take-up roller 1 is in engagement as shown, thereby forming a coupling for transmitting rotation of the planet carrier 8 to the take-up roller 1.
  • a control disc 12 is journaled on the hub 5' of the sun gear 5, and it has an internal gear 13 meshing with said planetary pinions 9 and 9'.
  • a brake band 14 is wound around the periphery of the control disc 12, one end 14' of which is connected to a pin 29 which is slidable and adjustable along an oblong slot 28 formed in the support frame 4 fixed to the loom frame F.
  • the other end 14" of the band 14 is securely connected to a pin 31 on a control lever 16.
  • This control lever is pivotally mounted at to said support frame 4.
  • An upper projection 16' of the control lever 16 is biased rightwardly by means of a spring 15, so that braking action is applied to the control disc 12.
  • a detector lever 17 carrying a guide roller 32 is oscillatable around a pivot pin 18, responsive to-the tension of the web of cloth w.
  • the left hand lower arm 17' of said detector lever 17 is biased downwardly by means of a spring 19 and is normally maintained in equilibrium by the tension of the web of cloth w.
  • the detector lever 17 is oscillated, and the righthand lower arm 17 will be oscillated in the direction of arrow C, where by the lower end of a bolt 17b depresses the longer arm 16" of said control lever 16, oscillating the latter around the pin 30 in a counterclockwise direction. This results in slackening of the brake band 14.
  • a ratchet wheel 34 is fixed to an axis 33 of the guide roller 32, and a pawl 35 engaging said ratchet wheel 34 is pivotally mounted at on the detecter lever 17. While the cloth is normally pulled in the winding up direction, the ratchet wheel 34 is arrested by said pawl 35. On the other hand, upon rewinding of the cloth said ratchet wheel will be freed from the pawl 35, thereby facilitating the rewinding operation.
  • a surface roller 20 is shown which is positively driven; 19 and 21 are guide rollers contacting the surface roller, and 22 is a breast beam.
  • the gear 6 meshing with the gear 7 is normally rotating in the cloth winding-up direction (direction of arrow A), and accordingly the sun gear 5 rotates in the same direction.
  • the detecter lever 17 is oscillated in the direction of arrow B by being acted by the action of the spring 19 due to a decrease of the tension of the web of cloth
  • the control lever 16 will also be oscillated in the clockwise direction, so that the brake band 14 will 'be actuated to apply brake action to the control disc 12.
  • the planet carrier disc 8 will be rotated through the planetary pinions 9 and 9', and the take-up roller 1 will be driven through the coupling 10-11, effecting the required take-up of the web of cloth.
  • the detecter lever 17 When the tension of the web of cloth reaches a predetermined value upon continued take-up operations, the detecter lever 17 will oscillate in the direction of arrow C because it is acted upon by such increased tension, and the bolt 17b on the righthand arm 17" will depress the leftwardly extending arm 16" of the control lever 16. Thereupon, the brake band 14 will be slackened and the braking action on the control disc 12 will be released, so that the latter together with the planetary pinions 9, 9' and the planet carrier disc 8 will freely rotate, so that the take-up operation will be stopped.
  • the power transmission system for driving the take-up roller 1 in the normal take-up direction may be occasionally stopped under the control of the detector lever 17 responsive to any variation of the tension of the web of cloth, so that the desired takeup motion may be smoothly continued, maintaining the predetermined tension of the cloth regardless of the gradual increase of diameter of the growing take-up roller, and accordingly that it is possible to prevent any tendency to produce undesired wrinkles or lines caused by difference of tension of the web of cloth between two rollers.
  • the web of cloth may be maintained under predetermined tension even at the time of rewinding the cloth which is necessarily effected for the purpose of dressing the cloth to remove any defective areas.
  • a take-up apparatus in a Weaving loom having a take-up roller comprising a power transmission mechanism for driving the take-up roller and having a rotary body, a brake band around the body, tension detecting means for detecting variation of the tension of the web of cloth being conveyed toward the take-up roller, and adjusting means coupled to said brake band for adjusting the brake action of said brake band under the control of said tension detecting means for stopping the operation of said power transmission mechanism when the tension detected becomes too large.
  • a take-up apparatus comprising a power transmission mechanism for rotating said take-up roller, a cloth tension detecting lever carrying a guide roller at its upper end adapted to be contacted by the web of cloth and oscillated according to variation of the tension of the cloth conveyed toward said take-up roller over said guide roller, said power transmission mechanism having a planetary gear mechanism with a control disc having an internal gear forming part of the planetary gearing of said planetary gear mechanism, a brake band wound around the periphery of said control disc, and means for operatively connecting a lower end of said tension detecting lever with said brake band for tightening the brake band when the tension of the web of cloth decreases to apply brake action to said control disc, thereby rotating the take-up roller.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US608677A 1966-07-07 1967-01-11 Take-up roller mechanism in a weaving loom Expired - Lifetime US3419050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4446266 1966-07-07

Publications (1)

Publication Number Publication Date
US3419050A true US3419050A (en) 1968-12-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US608677A Expired - Lifetime US3419050A (en) 1966-07-07 1967-01-11 Take-up roller mechanism in a weaving loom

Country Status (3)

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US (1) US3419050A (de)
CH (1) CH458237A (de)
GB (1) GB1176421A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445545A (en) * 1981-05-12 1984-05-01 Societe Alsacienne De Constructions Mecaniques De Mulhouse Device for winding a piece of fabric under constant tension, especially for a weaving loom
CN101481848B (zh) * 2009-02-23 2011-04-06 常州市润源经编机械有限公司 适用于经编机织物的卷取装置
CN105506839A (zh) * 2015-12-29 2016-04-20 约科布缪勒机械制造（中国）有限公司 一种重带机卷曲单向控制器

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE269412C (de) *
US537893A (en) * 1895-04-23 Take-up mechanism for looms
US574326A (en) * 1896-12-29 Let-off and take-up mechanism for looms
AT41915B (de) * 1908-07-27 1910-04-25 Charles Lucien David Abwickelvorrichtung für Webketten oder dgl.
US2366462A (en) * 1940-08-02 1945-01-02 Jacquard Knitting Machine Co Inc Cloth take-up
US2804760A (en) * 1955-02-23 1957-09-03 Draper Corp Fabric take-up for textile machines
AT202937B (de) * 1957-11-22 1959-04-10 Schoenherr G M B H Warenbaumantrieb
FR1440960A (fr) * 1965-06-01 1966-06-03 Sulzer Ag Dispositif pour l'évacuation de la chaîne dans les métiers à tisser

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE269412C (de) *
US537893A (en) * 1895-04-23 Take-up mechanism for looms
US574326A (en) * 1896-12-29 Let-off and take-up mechanism for looms
AT41915B (de) * 1908-07-27 1910-04-25 Charles Lucien David Abwickelvorrichtung für Webketten oder dgl.
US2366462A (en) * 1940-08-02 1945-01-02 Jacquard Knitting Machine Co Inc Cloth take-up
US2804760A (en) * 1955-02-23 1957-09-03 Draper Corp Fabric take-up for textile machines
AT202937B (de) * 1957-11-22 1959-04-10 Schoenherr G M B H Warenbaumantrieb
FR1440960A (fr) * 1965-06-01 1966-06-03 Sulzer Ag Dispositif pour l'évacuation de la chaîne dans les métiers à tisser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445545A (en) * 1981-05-12 1984-05-01 Societe Alsacienne De Constructions Mecaniques De Mulhouse Device for winding a piece of fabric under constant tension, especially for a weaving loom
CN101481848B (zh) * 2009-02-23 2011-04-06 常州市润源经编机械有限公司 适用于经编机织物的卷取装置
CN105506839A (zh) * 2015-12-29 2016-04-20 约科布缪勒机械制造（中国）有限公司 一种重带机卷曲单向控制器

Also Published As

Publication number Publication date
CH458237A (de) 1968-06-15
GB1176421A (en) 1970-01-01

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