US3804348A - Regulated windup apparatus - Google Patents

Regulated windup apparatus Download PDF

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Publication number
US3804348A
US3804348A US00263722A US26372272A US3804348A US 3804348 A US3804348 A US 3804348A US 00263722 A US00263722 A US 00263722A US 26372272 A US26372272 A US 26372272A US 3804348 A US3804348 A US 3804348A
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US
United States
Prior art keywords
roller
control
windup
web
control device
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
US00263722A
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English (en)
Inventor
M Ruscher
W Kruckels
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.)
MASCHINENFAB ZELL J KRUCKELS KG DT
ZELL J KRUCKELS KG MASCHF
Original Assignee
ZELL J KRUCKELS KG MASCHF
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.)
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Publication date
Application filed by ZELL J KRUCKELS KG MASCHF filed Critical ZELL J KRUCKELS KG MASCHF
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Publication of US3804348A publication Critical patent/US3804348A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H5/00—Beaming machines
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H13/00—Details of machines of the preceding groups
    • D02H13/12—Variable-speed driving mechanisms

Definitions

  • a web such as the warp in a loom, is wound up on.a warp beam after passing over a transporting roller which is driven at a constant speed, and a control rol ler mounted on a support which turns about the axis of the transporting roller.
  • the speed of the wound up web varies, the tension in the web changes and the support of the control roller is angularly displaced by the web and operates adjusting means of a variable transmission by which the warp beam is driven so that a desired constant tension can be maintained in'the warp.
  • the present invention relates to a regulated windup apparatus which is particularly suitable for winding up a .warp on the warp beam of a loom. It is an important requirement that, when the warp threads are wound up on the warp beam of a loom, before the weaving operation is started, that the tension in the warp is maintamed-substantially constant. This requires a reduction of the rotary speed of the warp beam. as the diameter of the warp wound up on the warp beam increases. Accordingly, regulating apparatus has been proposed for obtaining constant tension in the warp by means of a variable friction transmission acting on the warp beam. However, apparatus of this type has not been fully successful at high operational speeds.
  • the warp is guided over movable feeler rollers which required additional rollers deflecting the warp, and moreover there is a certain danger of crossing and entanglement of the warp threads.
  • Another object of the invention is to provide a regulated windup apparatus which is particularly suitable for windinga warp onto the warp beam of a loom.
  • the present invention provides between a transporting roller and a windup roller
  • control roller which is mounted for movement along a circle having its center in the axis ofa transport roller.
  • adjusting means are actuated by which the rotary speed of the windup roller, such as the warp beam, is adjusted to obtain substantially constant tension in the wound up web.
  • One embodiment of the invention comprises transporting roller means; a control device including a control roller cooperating with the transporting roller means, and support means mounting the control roller for movement about the axis of the transporting roller means along the periphery .of the same; a web being supplied to said supporting roller means and passing between the same and said control roller, and in a loop over the control roller' to a windup roller; drive means for rotating the transporting roller means so-that the web is transported; and variable transmission means connecting said drive means with the windup roller, and including adjusting me'ans operated by the control device during angular movement of the control roller about the axis of the transporting roller means.
  • the speed of the windup means is adjusted when the control device angularly displaced due to a speed variation of the web wound upon the windup roller and a corresponding tension variation in the web.
  • the support means of the control roller which are mounted for angular movement about the axis of the transporting roller, include radial slots in which the control roller is mounted for radial movement, biased by spring means to move toward the radially inner ends of the slots so that the control roller :is resiliently pressed against the transporting roller, with the web located between the two rollers.
  • control roller Due to the fact that the controlroller is pressed against the transporting roller by springs, it is possible to adjust the pressure of the control roller on the transporting roller by means of adjusting screws for the springs.
  • the resilient abutment of "the control roller has the advantage, that webs consisting of a material having low friction, do not slip on the transporting roller.
  • the combination of a control roller which is spring biassed and movable over the periphery of the transporting roller along a partcircular path is particularly advantageous since the angular displacement of the control roller obtains the desired regulation of the web tension since a slipping of the web upon varying web tension is avoided by pressing the control roller against the transporting roller with a suitable resilient force. Therefore, the mounting of a spring biassed control roller for movement along the periphery of the transporting roller, is considered an important feature of the invention.
  • a winding apparatus B transports a warp, hereinafter referred to as web to'a warp beam 24, hereinafter referred to as windup roller" so that a wound up body 240 of increasing diameter is formed on the windup roller 24.
  • the web W passes first over the pressure roller 7 which is mounted on a pair of arms 5 and 6 for angular movement, then over a major portion of the peripheral surface of transporting roller 1. between transporting roller 1 and a control roller 11,, in a loop over control roller 11 to a guide roller 25, and from there to the windup roller 24.
  • Transporting roller 1 is hollow, and has hollow journal portions 4a at the ends, which are mounted in bearings in support walls 2 and 3. At the outer ends of the tubular journals 4a, bearings are provided for a control shaft 8 which passes through the transporting roller 1 and projects at both ends therefrom.
  • One of the journals 4a carries a fixed pulley 4 driven through a belt 42 from a pulley on a shaft 41 driven from a drive shaft 40 through a pair of bevel gears 40a.
  • a control roller 11 has journal portions at the ends which are mounted in bearings 11a in a slide block 26, 27, respectively, as best seen in FIGS. 2 and 3.
  • Slide blocks 26, 27 are located in guide slots 26a provided at the outer ends of a pair of support arms 9, which are respectively fixedly secured to the ends of control shaft 8.
  • Guide rods 12a project in radial direction from the hubs of support arms 9 and 10 substantially in a diametrical position to the support arms 9 and 10, and counter balancing weights 12 and 13 are mounted on the guide rods 12a for adjustment so that the weight of the supporting arms 9, 10 with control roller 11 can be balanced so that gravity does not influence the movement of control roller 11 which can turn, together with the support arms 9, 10, and shaft 8 about the axis of transporting roller 1 so that control roller 11 moves along a part-circular path along the periphery of transporting roller 1, whereby the loop of the web W is increased or decreased in size.
  • control roller 11 performs an angular movement in the direction of the double arrow Pf2 between two end positions in which the supporting arms 9,- 10 are stopped by stops 9a.
  • control roller 11 is mounted in slide blocks 26, 27 which are biassed in radial inward direction by springs 28 and 29, as best seen in FIG. 3.
  • Adjusting screws 31 are provided which are threaded into the respective support arm 9 or 10, and permit an adjustment of the force of springs 28 and 29 which urge the control roller 11 in radial inward direction in slots 26a.
  • the threaded adjusting means 31 has an inner recess in which the spring 28 or 29 is guided.
  • a bolt 32 is secured to slide block 26, 27, and
  • - has a threaded end portion onto which a nut 33 is screwed to secure the adjusted position of adjusting means 31 and springs 28, 29.
  • control roller 11 can resiliently yield againstthe actionof springs 28 and 29 so that a thicker web portion can pass through the At the ends of control shaft 8, two wheels 14 and are fixed which turn together with support arms 9 and 10.
  • Links 14a and 15a have ends respectively connected to wheels 14 and 15 at points eccentric to the axis of shaft 8 and transporting roller 1, and are connected with control pistons 16a and 17a in pressure cylinders l6 and 17.
  • a pressure fluid is supplied through an inlet conduit 18a to an adjustable valve 18 and flows through conduit means 18b into the cylinders 16 and 17.
  • a selected pressure indicated by the manometer, 19 is obtained in cylinders 16 and 17, acting on pistons 16a and 170 so that the wheels 14 and 15 are turned with a corresponding torque together with the support arms 9 and 10 until support arms 9 and 10 with control roller 11 are in a desired angular position ob tained against the torque produced by the pull of the web on the control roller 11. Due to the counter balancing weights 12 and 13, the weight of control roller 11 does not influence the balancing of the opposing torques.
  • a gear segment 20 is secured to one end of control shaft 8 and meshes with a pinion 21 connected with a potentiometer 22 which is connected by a line 22a with electric operating means 23a controlling adjusting means 23 which is connected by a first pulley and belt transmission 44 with shaft 41, and by a second pulley and belt transmission 43 with the windup roller 24, as shown in FIG. 2.
  • the ratio of the transmission 43, 44, 23 is variable, and adjusted by turning gear segment 20 and the movable part of the potentiometer 22 so that the speed of the windup roller 24 is varied when the angular position of the control device 9, 10, 11 changes due to a variation of the tension in the web.
  • control roller 11 is moved in clockwise direction about the axis of shaft 8 and of transporting roller 1 out of the normal position selected by operation of valve 18.
  • the displacement of the control device 9, 10, 11 causes operation of potentiometer 22 and corresponding adjustment of the transmission ratio of transmission 44, 23, 43 by adjusting means 23 actuated by the potentiometer-controlled electric operating means 23a, until the rotary speed of the windup roller 24 is sufficiently reduced so that the reduced tension in the web permits control roller 11 to return to its normal position.
  • the adjusting means 23 of the variable transmission 43, 44, 23 effects a continuous adjustment of the transmission ratio and of the rotary speed of windup roller 24.
  • the speed of the transporting roller 1, which is driven by the transmission 41, 42directly from the input drive shaft 40, is constant.
  • FIG. 1 shows the guide roller 25 in a position for defleeting the web W between the control roller 11 and the 'outer periphery of the wound up body 24a on windup roller 24.
  • the position of guide roller 25 is selected so that only a small part of its peripheral surface is in contact with the web W, and so that the portion of the web between guide roller 25 and control roller 11 extends substantially in tangential direction in relation to the parts-circular path along which control roller 11 moves with supporting arms 9, 10 about the axis of shaft 8 and transporting roller 1.
  • This position of the web facilitates the passage of the web about control roller 1 1, and is independent of the diameter of the wound up body 24a so that the response of the control device 9, l0, 11 to tension variations of the web is not influenced by the diameter of the wound up body 24a.
  • the apparatus of the invention permits a very exact adjustment of the web tension within a wide range. Furthermore, if webs having a low friction coefficient are used, a slipping of the web on the transporting roller is prevented due to the fact that the control roller 11 is inwardly biassed by springs 28,29 into resilient abutment with the web and transporting roller 1.
  • the construction of the constant ratio transmission driving transporting roller 1, and the variable ratio transmission driving windup roller 24, is not an object of the invention, and any adjusting means 23 for continuously varying the ratio of the transmission 43, 44, 23 may be used, but the adjusting means 23 is controlled by the angular position of the control roller 11 in accordance with the invention.
  • the adjusting means 23 of the variable transmission obtain a variation of the rotary speed of windup roller 24 for the purpose of maintaining the same constant selected tension inthe wound up web, irrespective of variations of the speed of the web which may be caused by the increase, or decrease, of the diameter of the wound upweb 24a.
  • the term web is used in the present application to include any flexible elongated element, such as a thread or wire.
  • Regulatedwin'dup apparatus for an elongated web, comprising a windup roller; transporting roller means having an axis of rotation; a control device including a control roller cooperating with'said transporting roller means, and support means mounting said control roller for turning movement about said axis and along the periphery of said transporting roller means; said transporting roller means transporting said web between said transporting roller means and said control roller, and in a loop over said control roller to said windup roller; drive means for rotating said transporting roller means so that said web is transported toward said windup roller; and variable transmission means connecting said drive means with said windup roller, and including adjusting means operated by said control device during turning movement of said control roller about said axis, to adjust the speed of said windup means when said control device is angularly displaced due to a speed variation of the web wound up on said windup roller and a corresponding tension variation in said web.
  • control device includes weight means for counter balancing the weight of said support means and of said control roller so that said control device is balanced for movement about said shaft irrespective of the force of gravity.
  • control device includes control means for adjusing the angular position of said control device to a normal position corresponding to the desired speed of the web being wound up and to the desired tension in said web.
  • said support means of said control device include a control shaft coaxial with said transporting roller means and passing therethrough, said transporting roller means being hollow and having bearings for said control shaft, and two supporting arm means secured to said control shaft at the ends of said transporting roller means and having free ends rotatably supporting said control roller.
  • control device includes manual control means for adjusting the angular position of said control device to a normal position corresponding to the desired speed of said windup roller and to the desired tension in the web, said manual control means including a pair of links having first ends secured to said supporting arm means eccentric to said axis, a pair of control cylinders, a pair of control pistonsi'n said control cylinders connected with the other ends of said links, and manual means for varying the pressure in said control cylinders.
  • Regulated windup apparatus as claimed in claim 1 wherein said adjusting means of said variable transmission includes a potentiometer operated by said support means during angular'displacemen't of said control device, and electric operating means controlled by said potentiometer to vary the ratio of said variable transmission so that turning of said potentiometer in one direction caused by increased tension in said web acting on said control device effects a transmission ratio adjustment and a reduction of the speed of said windup roller by said electric operating means.
  • Regulated windup apparatus as claimed in claim 1 wherein said adjusting means of said variable. transmissionv includes means for continuously adjusting the output speed of said variable transmission so that the speed of said windup means is gradually adjusted.
  • Regulated windup apparatus as claimed in claim 1 and including stop means for limiting angular movement of said control device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)
US00263722A 1971-06-18 1972-06-12 Regulated windup apparatus Expired - Lifetime US3804348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2130020A DE2130020B2 (de) 1971-06-18 1971-06-18 Bäummaschine

Publications (1)

Publication Number Publication Date
US3804348A true US3804348A (en) 1974-04-16

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Application Number Title Priority Date Filing Date
US00263722A Expired - Lifetime US3804348A (en) 1971-06-18 1972-06-12 Regulated windup apparatus

Country Status (4)

Country Link
US (1) US3804348A (oth)
DE (1) DE2130020B2 (oth)
FR (1) FR2142092B3 (oth)
GB (1) GB1397448A (oth)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929168A (en) * 1973-02-08 1975-12-30 Voest Ag Take-off regulator

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127791A (en) * 1982-09-30 1984-04-18 Procter & Gamble Unwinding a roll of blocking- prone web
DE3537268A1 (de) * 1985-10-19 1987-04-23 Sucker & Franz Mueller Gmbh Transportwerk zum wickeln einer fadenschar
US4890368A (en) * 1988-09-29 1990-01-02 Reed-Chatwood, Inc. Warper with tension isolator and tension controller
DE19538478A1 (de) * 1995-10-16 1997-04-17 Sucker Mueller Hacoba Gmbh Verfahren und Vorrichtung zum Aufwickeln einer Fadenschar
CN102443913A (zh) * 2011-09-21 2012-05-09 常州市赛嘉机械有限公司 一种弹力丝整经机的中间牵伸装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639868A (en) * 1951-11-29 1953-05-26 Lev A Trofimov Strip material winding apparatus
US3224830A (en) * 1962-09-24 1965-12-21 George A Mitchell Differential drive for cinematographs
US3239161A (en) * 1963-12-31 1966-03-08 Orville V Dutro Rollstand drive
US3279719A (en) * 1963-06-28 1966-10-18 Sucker Geb Device for regulating the winding tension of web material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639868A (en) * 1951-11-29 1953-05-26 Lev A Trofimov Strip material winding apparatus
US3224830A (en) * 1962-09-24 1965-12-21 George A Mitchell Differential drive for cinematographs
US3279719A (en) * 1963-06-28 1966-10-18 Sucker Geb Device for regulating the winding tension of web material
US3239161A (en) * 1963-12-31 1966-03-08 Orville V Dutro Rollstand drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929168A (en) * 1973-02-08 1975-12-30 Voest Ag Take-off regulator

Also Published As

Publication number Publication date
FR2142092A1 (oth) 1973-01-26
FR2142092B3 (oth) 1975-08-08
GB1397448A (en) 1975-06-11
DE2130020A1 (de) 1972-12-21
DE2130020B2 (de) 1975-12-18

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