US3701492A - Method of braking and releasing a bobbin mandrel and winding apparatus for implementing the aforesaid method - Google Patents

Method of braking and releasing a bobbin mandrel and winding apparatus for implementing the aforesaid method Download PDF

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Publication number
US3701492A
US3701492A US60346A US3701492DA US3701492A US 3701492 A US3701492 A US 3701492A US 60346 A US60346 A US 60346A US 3701492D A US3701492D A US 3701492DA US 3701492 A US3701492 A US 3701492A
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US
United States
Prior art keywords
bobbin
mandrel
brake lever
tube
bobbin mandrel
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
US60346A
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English (en)
Inventor
Olivier Wust
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.)
Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
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Publication of US3701492A publication Critical patent/US3701492A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/036—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the combination of the detecting or sensing elements with other devices, e.g. stopping devices for material advancing or winding mechanism
    • B65H63/0364—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the combination of the detecting or sensing elements with other devices, e.g. stopping devices for material advancing or winding mechanism by lifting or raising the package away from the driving roller
    • B65H63/0366—Braking means for the raised or lifted package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • Cl ..242/39 function to release the bobbin tube from the bobbin '[51] Int. Cl. ..B65b 63/08 man rel.
  • a braking force component is generated [58] Field of Search ..242/39, 36, 37, 38, 18 DD, which acts against the braking lever to Prevent such 7 242/462, 46.4, 46.6 braking lever from pivoting into the second position for activating a switching function for releasing the [56] References Cited bobbin tube from the bobbin mandrel until the bobbin mandrel has come to a complete standstill.
  • the present invention relates to a new and improved method of braking and releasing a bobbin mandrel supported on a pivotable arm, and further pertains to a new and improved winding apparatus for the imple- SUMMARY OF THE INVENTION
  • a primary objective of the present invention is to fullfil this need.
  • Anothermore specific object of the present invention relates to an improved method of, and apparatus for, braking a bobbin mandrel and releasing the bobbin tube carrying the bobbin package, after the bobbin mandrel has been brought to standstill, and wherein the mechanism for releasing the bobbin tube from-the bobbin mandrel can be effectively arranged externally of the bobbin mandrel.
  • Still a further significant object of the present invention relates to an improved method of, and apparatus for, braking a bobbin mandrel and releasing the bobbin tube carrying the bobbin package from the mandrel after it has been stopped, and wherein the entire cooperation and structure of the various components is such that the release of the bobbin tube from the bobbin mandrel is only possible after the mandrel has been completely brought to standstill.
  • a further significant object of the present invention relates to an improved apparatus for the braking of a bobbin mandrel and the release of the bobbin tube supported by the bobbin mandrel in an extremely reliable, efficient and positive way.
  • Yet a further significant object of the present invention relates to an improved method of braking a bobbin mandrel and releasing the bobbin tube with the bobbin package supported thereon from the bobbin mandrel after it has been brought to standstill, while making use of the braking force component to prevent release of the bobbin tube from the bobbin mandrel during such time as the bobbin mandrel is still not stationery, and after it is stationery exerting a force in such a way that the fixation between the bobbin tube and the bobbin mandrel is then quickly and positively released.
  • the inventive method of braking a bobbin mandrel supported on a pivotable arm and releasing a full bobbin formed on a bobbin tube fixed on the bobbin mandrel of a winding apparatus is manifested by the features that the bobbin mandrel is pivoted against a brake lever pivotably arranged on a fixed axis-such that the generated braking force component prevents pivoting of such brake lever into a position for activating a switching function to permit release of the bobbin tube until such time as the bobbin mandrel has come to a complete standstill. Thereafter the brake lever is pivoted into a position which activates release of the bobbin tube fixation.
  • the invention contemplates that the release of the bobbin tube fixation can be undertaken-while the bobbin mandrel is at standstill by pivoting the brake lever so as 'to activate a valve which then interrupts the supply of a suitable control medium from a pressure source, thereby releasing the fixation of the bobbin tube with the bobbin mandrel.
  • a brake lever is mounted to be pivotable between a braking position and a releasing position, with the position of its pivoting axis being selected'such that the contact force exerted on the brake lever by the bobbin mandrel, in the absence of the braking force, pivots the brake lever into its releasing position where there is undertaken release of the bobbin tube fixation.
  • a yarn or thread traversing device 1 serves to traverse back and forth a yarn or thread 2 supplied from above, according to the desired traverse.
  • the yarn 2 contactingly follows a suitably driven friction drive drum 3 until it has been wound in the form of a suitable bobbin package 4 which contacts the drive drum 3.
  • the bobbin package 4 more specifically, is formed upon a detachable bobbin tube 5 placed on a bobbin mandrel 6 extending within the bobbin tube 5, as shown.
  • Bobbin mandrel 6 is supported on a pivotable arm member 7 which, in turn, is attached to the machine frame.
  • the bobbin tube 5 is fixed with the bobbin mandrel 6 by means of an elastic sleeve member 8 capable of being subjected to the pressure of a suitable pressurized fluid medium, typically compressed air.
  • a suitable pressurized fluid medium typically compressed air.
  • This compressed air is delivered to the sleeve member 8 from a compressed air source 9 through the agency of a suitable three-way valve member 10 during such time as its valve control piston 11 is in its lowered position.
  • valve control piston 11 when the valve control piston 11 is raised, then, the supply of compressed air' to the elastic sleeve member 8 is shut off, the air within the sleeve member is discharged, for instance via the conduit 10a and the valve outlet 10b, and the bobbin tube 5 can be readily removed axially away and off of the bobbin mandrel 6.
  • a ring member 12 is arranged at the end of the bobbin mandrel 6 facing the pivotable arm member 7.
  • a brake lever pivotably mounted at location 18 is pivotably arranged to move between two stop members 13 and 14, brake lever 15 further incorporating a suitably constructed brake lining 16.
  • a normal pressure force N is generated which exerts a moment M, upon the braking lever 15: wherein M, a X N, wherein N represents the normal pressure force produced by the lifting mechanism 17, and a represents the distance of such normal pressure force N from the pivot point 18 of the brake lever 15. Since. the bobbin mandrel 6 still rotates at high speed there is simultaneously produced a friction force P, which can be defined by the equation P N X IL, wherein p. is the co-efficient of friction. Since the friction force P acts in the direction indicated in FIG. 3,fa moment M is produced which is opposite to the moment M The moment M can be defined by the equation M P X b, wherein b represents the spacing or distance of the force P from the pivot point 18. 1
  • the brake lever 15 is pivoted into the position indicated with phantom lines in FIG. 3, by virtue of the force N exerted by the lifting mechanism 17 which nows acts at the location 19.
  • the valve control piston 11 of the valve unit10 is raised inorder to interrupt the supply of compressed air formerly delivered from the compressed. air source 9 and the conduit 10a into the bobbin mandrel 6: and the compressed air previously delivered is drained from the sleeve member 8, preferably constructed in the form of a suitable diaphragm.
  • the bobbin tube 5 istherefore released, that is, no longer is clamped with the bobbin mandrel 6, and hence, can be easily removed axially off of the bobbin mandrel 6, a new empty tube then can be placed onto such bobbin mandrel. Furthermore, the brake lever 15 is maintained during this time in its position by the stop member After the bobbin-change operation has been completed, the arm member 7 pivots the bobbin mandrel 6 back into its winding position and the brake lever 15 drops under its own weight back against the stop member 13, whereupon compressed air is once again delivered to the sleeve member 8 which fixedly clamps the bobbin tube 5 to the bobbin mandrel 6. As previously explained, instead of employing compressed air any other suitable pressurized medium may be used as the control medium.
  • a winding apparatus comprising a bobbin mandrel, a bobbin tube for a bobbin package carried by said bobbin mandrel, means for releasably fixing said bobbin tube with said bobbin mandrel, a frictiondrive drum for drivingly contacting said bobbin mandrel, pivotable arm means cooperating with said bobbin mandrel for pivoting said bobbin mandrel out of contact with said friction drive drum, and mechanism for braking the bobbin mandrel and for actuating said fixing means for releasing the releasable fixation of said bobbin tube with said bobbin mandrel which incorporates a brake lever, means for pivotably mounting said brake lever to pivot between a braking position for braking the bobbin mandrel and a release position for actuating said fixing means'for releasing the fixation of the bobbin tube with said bobbin mandrel, said pivotable mounting means providing a pivot axis for said brake lever
  • said mechanism for braking and for actuating said fixing means further includes means cooperating, with said fixing means and said brake lever for releasing said fixv ation vof said'bobbin tube with said bobbin mandrel,
  • said fixing means comprises an expansible sleeve member carried by said bobbin mandrel and cooperating with said bobbin tube and supported by said bobbin mandrel, and means for delivering a pressurized fluid medium to said expansible sleeve member to provide fixation of said bobbin tube with said bobbin mandrel.
  • a method of braking a rotating bobbin mandrel of a yarn winding apparatus and releasing a bobbin tube including a full bobbin from said bobbin mandrel comprising the steps of:
  • a method of braking a rotating bobbin mandrel of a yarn winding apparatus and releasing a bobbin tube including a wound bobbin from said bobbin mandrel comprising the steps of:

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Winding Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US60346A 1969-08-12 1970-08-03 Method of braking and releasing a bobbin mandrel and winding apparatus for implementing the aforesaid method Expired - Lifetime US3701492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1244669A CH495907A (de) 1969-08-12 1969-08-12 Verfahren zum Bremsen und Lösen eines Spulendornes und Aufspul-Vorrichtung zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
US3701492A true US3701492A (en) 1972-10-31

Family

ID=4383102

Family Applications (1)

Application Number Title Priority Date Filing Date
US60346A Expired - Lifetime US3701492A (en) 1969-08-12 1970-08-03 Method of braking and releasing a bobbin mandrel and winding apparatus for implementing the aforesaid method

Country Status (6)

Country Link
US (1) US3701492A (de)
JP (1) JPS4995B1 (de)
CH (1) CH495907A (de)
DE (1) DE2039913A1 (de)
FR (1) FR2056648A5 (de)
GB (1) GB1319272A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH586155A5 (de) * 1974-10-09 1977-03-31 Rieter Ag Maschf
JPS55120648U (de) * 1979-02-16 1980-08-27
CS207271B1 (en) * 1979-03-30 1981-07-31 Vladimir Prasil Facility for lifting the wound up bobbin and its contemporary braking on the textile machines particularly by the automatic crosswinding machines
DE4131179C2 (de) * 1991-09-19 1996-12-05 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Stillsetzen einer Aufwickelspule

Also Published As

Publication number Publication date
JPS4995B1 (de) 1974-01-05
FR2056648A5 (de) 1971-05-14
CH495907A (de) 1970-09-15
GB1319272A (en) 1973-06-06
DE2039913A1 (de) 1971-02-25

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