US3458984A - Bobbin-handling mechanism - Google Patents

Bobbin-handling mechanism Download PDF

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Publication number
US3458984A
US3458984A US663258A US3458984DA US3458984A US 3458984 A US3458984 A US 3458984A US 663258 A US663258 A US 663258A US 3458984D A US3458984D A US 3458984DA US 3458984 A US3458984 A US 3458984A
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United States
Prior art keywords
fork
donning
bobbin
along
spindles
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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
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US663258A
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English (en)
Inventor
Milko Dimitrov Dimitrov
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.)
DSO TEJKO I OBSHTO MASHINOSTROENE
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DSO TEJKO I OBSHTO MASHINOSTROENE
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Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
    • D01H9/08—Doffing arrangements independent of spinning or twisting machines
    • D01H9/10—Doffing carriages ; Loading carriages with cores

Definitions

  • My present invention relates to an automatic doffer for ring spinning frames and, more particu-arly, to a device for removing full bobbins from ring spinning or twisting frames or machines and replacing them by empty bobbins.
  • the device of the present invention is designed to move parallel to the row of spindles and to be associated with the spinning or twisting machine.
  • a mechanism comprising a series of units each including a donning fork and a doffing fork which are tiltable about horizontal axis for placing empty cores on the respective spindles and removing full bobbins therefrom.
  • the mechice anism includes a triangular frame having ascending and descending sides inclined to the horizontal and along the ascending side of which the dofling fork moves in recumbent position and pick up respective bobbins.
  • Each dofiing fork is erected on reaching the apex of the triangle, while in the descending side the previously erected donning forks, loaded with fresh or empty cores, are placed in recumbent position to deposit each core on an empty spindle.
  • the device makes use of an endless chain positioned via suitable guide means and sprockets in the form of an isosceles triangle on which are fixed the units having forks for removing full bobbins and depositing empty ones.
  • the device also includes a system for feeding the empty cores to the donning forks and cutting the thread of a full wound bobbin to allow it to be removed by the doffing fork.
  • FIG. 1 is a side view of the doffer alongside a travelling row of spindles of a spinning or twisting machine
  • FIG. 2 is an elevational view of a unit carried by the chain along the triangular path and provided with forks for removing the full bobbins (dotling forks) and forks for placing empty cores upon the spindle;
  • FIG. 3 is a plan view of the thread-cutting mechanism according to the present invention.
  • FIG. 4 is a detail of a lock for the forks of one of these units.
  • FIG. 1 I show a system according to the present invention in which a triangle guide frame T is positioned on a base adjacent to spinning and twisting machine which sustains continuous flow of spindles therepast.
  • a number of units 2 (FIG. 2) which may be referred to hereinafter as dofling and donning units.
  • Each unit (FIG. 2) comprises a base 1 on which a sector 2 is pivotally mounted for purposes to be discussed in greater detail hereinafter.
  • the unit also comprises a dofiing fork 3 and a donning fork 4, both shown in their erected positions.
  • a lock 5 retains the donning fork 3 in its elevated position while locks 7 and 8 are provided to hold the sector 2 in its extreme angular positions.
  • a lifting lever 9 is carried by the sector 2 and serves to elevate the dotfing fork 3 while locking 10 retains the donning fork in position for dropping a bobbin or a spindle.
  • each dofiing and donning unit runs alongside the mouth of a magazine 11 for delivering empty cores S to the donning fork 4 of the units as they ride up along the ascending side of the device.
  • the cores pass along a ramp 25 from the magazine 11 under the control of a plate 13 actuated by a crank connected by a belt to the chain drive for the unit (lefthand side in FIG. 1) into a chute 12 from which they are dispensed to the donning forks.
  • a yarn cutting device seen only fragmentarily in the center of the isoceles triangle in FIG. 1, serves to sever the yarn of the full bobbin as they are removed and carried away.
  • This yarn-cutting device shown in greater detail in FIG. 3, comprises a yarndeflectingwire or deviator 14 adapted to intercept the yarn of each spool as the spindles pass successively beneath it.
  • the deviator 14 co-operates with a knife or blade 15 and a pressing bar 16 which bears against the spools as is discussed in greater detail hereinafter.
  • the isosceles triangle defines the path of the units which lie in a plane parallel to the plane of the spindle axes, the path having ascending and descending sides along the inclined flanks of the triangle and a horizontal stretch running counter to the direction along which the spindles advance at the base of the triangle.
  • I provide an electromagnet 17 which has a tongue that extends into the path of the units to trip the latch holding the doffing fork 3 in its erected or vertical position.
  • a spring constituting part of the latch swings the dofling fork 3 downwardly, i.e. into a recumbent or generally horizontal position as will be apparent with respect to the unit at the lower left-hand side of the triangular path in FIG. 1, whereby the fork 3 engages a full bobbin at the point at which the triangular path of the units cross the horizontal row of upright bobbins.
  • the fork 3 (FIG.
  • Latch 5 relocks to retain the doffing fork 3 in this position.
  • the lock and locks 7 and 8 are operated by a ratchet. Means may be provided to enable a circuit breaker to stop the motors of the apparatus when a damaged spool or a wrongly inserted spool is engaged by the forks 4.
  • the lock 8 (FIG. 2) of the unit rising along the triangle is unlatched by a ratchet arrangement enabling the sector 2 with the fork 4 carrying the empty core S picking up from the chute 12 to swing until latch 7 engages to lock the sector 2 in a position of the fork such that the empty spool S is oriented parallel to the spindle axis but generally horizontal as shown in FIGS. 1 and 2.
  • a further electromagnet 22 on the descending side of the path triggers the lock 6 of the donning fork 4, thereby allowing the fork to swing downwardly toward the plane of the spindle deposit its empty bobbin onto the spindle from the upper end.
  • Lock 10 (FIG. 2)
  • An ejector ramp 27 lifts the full bobbin B from the upright fork 3 of each unit as it moves downwardly along the triangle.
  • the bobbin passes over the ejector into a magazine.
  • the thread deflector 14 catches the yarn and guides it toward the knife blade which severs the thread to release the full bobbin.
  • the pressing band 16 frictionally retains the cut thread and until a new core is inserted while a thread deflector 28 (FIG. 1) is designed to return threads which terminate in front.
  • the contacts 29 are actuated by the train of spindles to energize electromagnet 17 when the first spindle arrives and de-energize the electromagnet when the last spindle clears.
  • Contacts 30 come also operated by a plate along the spindle train, energizes electromagnet 22 upon arrival of the first spindle and switches it out on passage of the last spindle therepast.
  • a sprocket 31 drives the main chain while the dofl'er is driven by a motor 32.
  • a device for the automatic dofiing of bobbins from and replacement of empty spools on a spinning and twisting machine comprising, in combination with a spinning or twisting machine having a succession of spindles moving along a transport path and lying in a plane while spools carried by said bobbins are wound with yarn, a donning and doffing station alongside said path and including:
  • each of said units including a dofiing fork engageable with full bobbins carried by spindles upon movement past the ascending sides of said chain for lifting said full bobbins from their spindles as said units travel upwardly along side ascending side, and a donning fork adapted to receive an empty spool for emplacing same on the spindles as they pass the descending side of the triangle while the units move downwardly therealong;
  • each of said doffing forks has a bifurcation provided with spring-loaded catches engageable with the full bobbins on said spindles.
  • each of said units includes a plate pivotable about an axis perpendicular to said planes and carrying the respective forks, and a pair of ratched-operated catches for retaining said plate in alternate angular positions for ascent of each unit along the ascending side of the triangle and for descent of each unit along said descending side.
  • the means for removing full bobbins from said doffing forks including a stripper plate along said descending side engageable with the full bobbins carried by said doffing forks as said doffing forks descend below said stripper plate.
  • said magazine means includes a chute opening above the ascending side of said chain, and means including a movable plate for controlledly supplying said spools to said shoes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US663258A 1966-08-29 1967-08-25 Bobbin-handling mechanism Expired - Lifetime US3458984A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG105966 1966-08-29

Publications (1)

Publication Number Publication Date
US3458984A true US3458984A (en) 1969-08-05

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Application Number Title Priority Date Filing Date
US663258A Expired - Lifetime US3458984A (en) 1966-08-29 1967-08-25 Bobbin-handling mechanism

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US (1) US3458984A (en)van)
BE (1) BE693247A (en)van)
CH (1) CH457222A (en)van)
DE (1) DE1685649A1 (en)van)
GB (1) GB1195051A (en)van)
NL (1) NL136953C (en)van)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599413A (en) * 1968-12-06 1971-08-17 Palitex Project Co Gmbh Apparatus on a double twist spindle frame for supplying the spindles with bobbins and for carrying away the empty yarn carriers
CN102443896A (zh) * 2011-09-22 2012-05-09 吴江秦邦纺织有限公司 粗纱机的可调节的落纱叉
CN103603104A (zh) * 2013-11-14 2014-02-26 太原科技大学 一种落纱机自动拔管装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104630946B (zh) * 2015-03-02 2017-05-17 清华大学 落纱机平轴轮系竖直连续压管装置
CN110409023B (zh) * 2019-08-28 2024-07-16 洛阳方智测控股份有限公司 一种落纱机器人

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US745466A (en) * 1901-12-12 1903-12-01 Harry A Severson Yarn controller and separator for ring-spinning frames.
US1122417A (en) * 1912-01-06 1914-12-29 Barber Colman Co Doffer.
US1823374A (en) * 1928-05-31 1931-09-15 Fairbairn Lawson Combe Barbour Doffing mechanism for flyer spinning, doubling, twisting and like machines
GB859631A (en) * 1958-03-06 1961-01-25 Felix William Arthy Scriven A doffing and donning device for spinning, twisting, doubling and like machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US745466A (en) * 1901-12-12 1903-12-01 Harry A Severson Yarn controller and separator for ring-spinning frames.
US1122417A (en) * 1912-01-06 1914-12-29 Barber Colman Co Doffer.
US1823374A (en) * 1928-05-31 1931-09-15 Fairbairn Lawson Combe Barbour Doffing mechanism for flyer spinning, doubling, twisting and like machines
GB859631A (en) * 1958-03-06 1961-01-25 Felix William Arthy Scriven A doffing and donning device for spinning, twisting, doubling and like machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599413A (en) * 1968-12-06 1971-08-17 Palitex Project Co Gmbh Apparatus on a double twist spindle frame for supplying the spindles with bobbins and for carrying away the empty yarn carriers
CN102443896A (zh) * 2011-09-22 2012-05-09 吴江秦邦纺织有限公司 粗纱机的可调节的落纱叉
CN103603104A (zh) * 2013-11-14 2014-02-26 太原科技大学 一种落纱机自动拔管装置

Also Published As

Publication number Publication date
BE693247A (en)van) 1967-07-03
GB1195051A (en) 1970-06-17
NL136953C (en)van) 1972-10-16
DE1685649A1 (de) 1971-08-19
CH457222A (de) 1968-05-31
NL6701458A (en)van) 1968-03-01

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