US3871418A - Weaving machine having component warp beams - Google Patents

Weaving machine having component warp beams Download PDF

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Publication number
US3871418A
US3871418A US392184A US39218473A US3871418A US 3871418 A US3871418 A US 3871418A US 392184 A US392184 A US 392184A US 39218473 A US39218473 A US 39218473A US 3871418 A US3871418 A US 3871418A
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United States
Prior art keywords
brake
warp beam
weaving machine
warp
blocking means
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
US392184A
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English (en)
Inventor
Otto Hintsch
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.)
Sulzer AG
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Sulzer AG
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Filing date
Publication date
Application filed by Sulzer AG filed Critical Sulzer AG
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Publication of US3871418A publication Critical patent/US3871418A/en
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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
    • D03D49/06—Warp let-off mechanisms

Definitions

  • Cl D03d 49/06 blocking means Order to temporarily lock the warp [58] Field 01' Search 139/100, 109, 110, 25, beams during the reed beagup portion of the machine 139/102 101; 66/86 A cycle.
  • the blocking means includes hydraulically actuated brake heads for engaging a brake disc on each [56] References C'ted warp beam or a warp beam gear for controlling the UNITED STA ES P T let-off motion of a warp beam.
  • the blocking means 407,872 7/1889 Moore 139/101 x can also include an electrically operated brake.
  • This invention relates to a weaving machine having component warp beams.
  • weaving machines having component warp beams frequently have faults occur in the end product along the component warp beam division during let-off.
  • the invention is directed to a weaving machine having at least two component warp beams and a main drive shaft.
  • the invention starts from the knowledge that beat-up may cause an uneven movement or vibration of the discrete component warp beams.
  • the invention provides the weaving machine with a blocking means for selectively blocking rotation of each warp beam during a predetermined portion of the machine cycle as well as with a control means for activating the blocking means in synchronism with the rotation of the drive shaft.
  • the time at which the blocking means is activated corresponds to the reed beat-up.
  • the blocking means can be hydraulically actuacted or electrically actuated.
  • the blocking means can utilize a brake shoe system which cooperates either with a brake disc on an individual warp beam or a warp beam gear which controls the let-off motion of an individual warp beam.
  • a brake shoe system can be activated hydraulically via a piston and cam arrangement off the motion of the drive shaft.
  • the blocking means can utilize an electrically controlled multiple-disc brake for blocking movement of a warp beam gear which serves to control the let-off motion of a warp beam.
  • FIG. 1 diagrammatically illustrates a view of two component warp beams associated with a hydraulic blocking means operative on adjacent warp beam discs in accordance with the invention
  • FIG. 2 illustrates a view corresponding to FIG. 1 of a hydraulic blocking device acting on warp beam gears according to the invention.
  • FIG. 3 illustrates a view of an electric blocking device used in accordance with a further embodiment of the invention.
  • a pair of component warp beams 1, 2 are rotatably mounted at one end in bearings 3, 4 which are shown diagrammatically and which are disposed in the uprights (not shown) of a weaving machine while the opposite ends are mounted in a common centralized bearing 5, also disposed in uprights of the weaving machine.
  • Each warp beam 1, 2 has a pair of pulleys or discs which, serve to safeguard the warp windings of the beam.
  • the inner pulleys 6', 7 each carry a brake disc 8, 9 which extends radially outwardly of the respective beam 1, 2 and pulleys 6, 7 and is fixedly mounted on the respective beam 1, 2.
  • the beams 1, 2 are coaxially mounted and dis posed in adjacent relation to sub-divide the machine width.
  • a blocking means for selectively blocking rotation of each war'p beam 1, 2 via the brake discs 8, 9 includes a brake head 12 having two brake shoe systems 10, 11 which are hydraulically operated in known manner. Each brake shoe system 10, 11 is mounted about a brake disc 8, 9 so as to engage the brake disc 8, 9 when actuated. This causes locking of the brake disc 8, 9 and thus prevents the warp beams l, 2 from rotating.
  • a control means is connected to the brake head 12.
  • This control means includes a hydraulic line 13 connected in common to the brake shoe systems 10, II, a master cylinder 14 which supplies hydraulic fluid to the line 13 and which has a piston (not shown) moved automatically by way of a piston rod 15 and a cam 16.
  • the cam 16 is fixedly mounted with respect to a main drive shaft 17 of the weaving machine to rotate therewith and is shaped so that the blocking means 6 12 retains the warp beams l, 2 during sley movement and, thus, during beating-up.
  • each brake head 21, 22 is associated with each warp beam 1, 2 with each brake head 21, 22 including a brake shoe system actuated over a hydraulic line 23 from a control means as above. Further, instead of cooperating with brake discs on the beams, the
  • brake heads 21, 22 cooperate with warp beam gears 24, 25 which are mounted on the shafts of the warp beams l, 2 and control the warp let-off motion.
  • the brake shoe systems of the brake heads 21, 22 are activated to engage about each warp beam gear 24, 25 during beat-up as above.
  • an electro-mechanicalblocking means can be used. As shown, this comprises, for each warp beam, an electrically controlled multiple-disc brake 31 which is mounted on the machine frame and is operative on a pinion 33 meshing with a warp beam gear 32 for a beam 1.
  • the brake 31 can be controlled by any suitable control means, such as a switch, operated by a cam rotating at main shaft speed.
  • the duration of component beam blocking is determined experimentally and can be less or more than the duration of reed movement.
  • the invention is not limited to the embodiments described and, of course, can be used in weaving machines and looms having more than two component warp beams. Differently devised blocking means and control and actuating means are also feasible.
  • a weaving machine having at least two coaxially mounted component warp beams, said beams being disposed in adjacent relation to sub-divide the machine width and a main drive shaft;
  • a blocking means for selectively blocking rotation of each warp beam during a predetermined portion of a cycle of said machine
  • control means for activating said blocking means in synchronism with the rotation of said drive shaft whereby during beat-up said warp beams are locked in place.
  • each warp beam includes a brake disc fixedly.
  • said blocking means includes a brake head having two brake shoe systems, each brake shoe system being positioned about a respective brake disc to engage therewith during said predetermined piston rod in said master cylinder.
  • a weaving machine as set forth in claim 1 which further includes a warp beam gear connected to a respective warp beam for controlling a let-off motion of said respective warp beam and said blocking means includes a pair of brake heads each having a brake shoe system positioned about a respective gear to engage therewith during said predetermined machine cycle portion.
  • control means is hydraulically connected between said drive shaft and said brake heads.
  • said blocking means includes an electrically controlled multiple-disc brake operatively connected to a rotatablepinion disposed in meshing engagement with a respective said gear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Braking Arrangements (AREA)
US392184A 1972-10-03 1973-08-28 Weaving machine having component warp beams Expired - Lifetime US3871418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1442172A CH556415A (de) 1972-10-03 1972-10-03 Mit teilkettbaeumen versehene webmaschine.

Publications (1)

Publication Number Publication Date
US3871418A true US3871418A (en) 1975-03-18

Family

ID=4400690

Family Applications (1)

Application Number Title Priority Date Filing Date
US392184A Expired - Lifetime US3871418A (en) 1972-10-03 1973-08-28 Weaving machine having component warp beams

Country Status (9)

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US (1) US3871418A (US07993877-20110809-P00003.png)
JP (1) JPS4971253A (US07993877-20110809-P00003.png)
CH (1) CH556415A (US07993877-20110809-P00003.png)
CS (1) CS170475B2 (US07993877-20110809-P00003.png)
DE (1) DE2248770C2 (US07993877-20110809-P00003.png)
FR (1) FR2201362B1 (US07993877-20110809-P00003.png)
GB (1) GB1449012A (US07993877-20110809-P00003.png)
IT (1) IT993463B (US07993877-20110809-P00003.png)
SU (1) SU592367A3 (US07993877-20110809-P00003.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993458A (en) * 1988-06-28 1991-02-19 Almhults Bruk Ab Intermittent whip roll braking device
CN101713118B (zh) * 2009-10-30 2011-09-21 江苏万工科技集团有限公司 多经轴送经装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US407872A (en) * 1889-07-30 mooee
US1564162A (en) * 1925-04-10 1925-12-01 Otto C Wiese Beam tension device for knitting machines
US2430022A (en) * 1945-01-04 1947-11-04 Lambach Fritz Warp yarn feeding means for warp knitting machines
US2625021A (en) * 1949-02-01 1953-01-13 Alfred Hofmann & Co Automatic yarn tension control
US3426806A (en) * 1966-04-13 1969-02-11 Sulzer Ag Warp let-off motion
US3470921A (en) * 1967-10-17 1969-10-07 North American Rockwell Letoff apparatus for textile machine
US3534779A (en) * 1967-04-14 1970-10-20 Hermann Wangner Warp beam arrangement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US407872A (en) * 1889-07-30 mooee
US1564162A (en) * 1925-04-10 1925-12-01 Otto C Wiese Beam tension device for knitting machines
US2430022A (en) * 1945-01-04 1947-11-04 Lambach Fritz Warp yarn feeding means for warp knitting machines
US2625021A (en) * 1949-02-01 1953-01-13 Alfred Hofmann & Co Automatic yarn tension control
US3426806A (en) * 1966-04-13 1969-02-11 Sulzer Ag Warp let-off motion
US3534779A (en) * 1967-04-14 1970-10-20 Hermann Wangner Warp beam arrangement
US3470921A (en) * 1967-10-17 1969-10-07 North American Rockwell Letoff apparatus for textile machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993458A (en) * 1988-06-28 1991-02-19 Almhults Bruk Ab Intermittent whip roll braking device
CN101713118B (zh) * 2009-10-30 2011-09-21 江苏万工科技集团有限公司 多经轴送经装置

Also Published As

Publication number Publication date
IT993463B (it) 1975-09-30
JPS4971253A (US07993877-20110809-P00003.png) 1974-07-10
SU592367A3 (ru) 1978-02-05
CS170475B2 (US07993877-20110809-P00003.png) 1976-08-27
GB1449012A (en) 1976-09-08
DE2248770C2 (de) 1974-09-26
FR2201362A1 (US07993877-20110809-P00003.png) 1974-04-26
DE2248770A1 (US07993877-20110809-P00003.png) 1974-02-28
FR2201362B1 (US07993877-20110809-P00003.png) 1977-05-27
CH556415A (de) 1974-11-29
DE2248770B1 (de) 1974-02-28

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