US3777996A - Bobbin exchange mechanism of a yarn winder - Google Patents

Bobbin exchange mechanism of a yarn winder Download PDF

Info

Publication number
US3777996A
US3777996A US00185673A US3777996DA US3777996A US 3777996 A US3777996 A US 3777996A US 00185673 A US00185673 A US 00185673A US 3777996D A US3777996D A US 3777996DA US 3777996 A US3777996 A US 3777996A
Authority
US
United States
Prior art keywords
yarn
bobbin
lever
traverse
bobbin holder
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
US00185673A
Other languages
English (en)
Inventor
S Torii
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3777996A publication Critical patent/US3777996A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • 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

  • the present invention relates to an improvement of a bobbin exchange mechanism of a yarn winder, more particularly, relates to a device for catching an end of a supplied yarn upon a fresh or empty bare bobbin after doffing a full packaged bobbin and mounting a fresh bare bobbin upon a winding mechanism of a yarn winder.
  • the above-mentioned catching device of the present invention is preferably applied to a winding machine with a spindle drive.
  • spindle winder represents a yarn winder provided with at least one winding unit comprising a spindle for mounting a bobbin and a traverse frame which guides a supplied yarn to the bobbin, and the traverse frame is displaced during winding from its original working position which corresponds adjacent to a bare bobbin to a doffing position to a full packaged bobbin.
  • the principal object of the present invention is to provide a device for catching an end of supplied yarn upon a fresh bare bobbin mounted on a driving spindle after completion of the doffing operation of a full packaged bobbin, and in which the bobbin exchange operation can be carried out effectively.
  • a further object of the present invention is to provide an improved device for catching an end of the supplied yarn on a fresh bare bobbin mounted on a take-up spindle whereby continuous take-up can be effectively carried out in producing synthetic filament yarn.
  • the catching device is provided with means for temporarily holding the free end of a supplied yarn so that the yarn is positioned along a predetermined path, means for hooking a portion of the yarn positioned along the predetermined path and re-positioning this portion at a second predetermined position when a winding mechanism is displaced to its working position adjacent to a bare bobbin mounted on a driving spindle and, means for catching the yarn portion displaced to the second predetermined position while driving the spindle.
  • the abovementioned catching means is rigidly mounted upon the free end of each bare bobbin mounted on the driving spindle.
  • the above-mentioned holding means works to make a stretched yarn path in combination with a yarn sliding guide bar rigidly mounted on a traverse frame or cam box. Further, the hooking means is turned from its receded position near the bracket holding the transverse frame to its working position in accordance with the above-mentioned displacement of the traverse frame. Consequently, when the traverse frame is displaced to its working position adjacent to the fresh bare bobbin mounted on the driving spindle, i.e. the hooking means is turned from its receded position to its working position, a yarn running along the second yarn path caught by the catching means of the driving spindle. In the above-mentioned condition, the yarn portion between the yarn sliding guide bar and the hooking means is automatically caught by a traverse guide of the traverse frame, consequently, the normal winding operation is commenced.
  • FIG. 1 is a schematic view of the catching device which is mounted on a spindle driver winding unit, according to the present invention
  • FIG. 2A is a side view of a part of a catching means of the device shown in FIG. 1,
  • FIG. 2B is a cross-sectional view of the catching means taken along a line 23-28 in FIG. 2A,
  • FIG. 3 is a perspective view of a wedge mechanism for controlling the turning motion of the traverse frame shown in FIG. 1,
  • FIG. 4 is a plan view of the wedge mechanism, partly in section, shown in FIG. 3,
  • FIGS. 5A, 5B and 5C are explanatory side views of the winding unit shown in FIG. 1, by which the motion of the catching device of the present invention are illustrated respectively.
  • a yarn sliding guide bar 2 is mounted above a cam box or traverse frame 4 of the winding mechanism.
  • the yarn sliding guide bar 2 extends adjacent to a bobbin holder 1 which is secured on a spindle (not shown), however, the yarn sliding guide bar 2 does not extend beyond the free end of the bobbin holder 1. Further, the yarn sliding guide bar 2 is provided with an S- shaped portion formed at its free end.
  • a suction means 20 is mounted on a machine frame 5 at a lower side portion below the bobbin holder 1 as shown in FIG. 1. The suction means 20 is provided with a suction aperture 19 at its free end which extends beyond the traverse frame 4.
  • a shutter mechanism for opening or closing the aperture 19 is disposed in an inside position adjacent to the suction aperture 19 and is manually actuated by a handle 36.
  • a straight horizontal portion of the yarn sliding guide bar 2 functions to guide a yarn supplied from a supply source through a guide roll 23 (FIGS. 5A, 5B 5C) so as to lead it to the traverse guide mentioned already, and further the S-shape curved portion of the yarn sliding guide bar 2 functions to locate the yarn path toward the suction aperture 19 when a bobbin exchange operation is carried out.
  • a holding stud 6 for holding the transverse frame 4 is horizontally secured to the machine frame 5 and onto the bar 6 is turnably mounted a bracket 7 which supports the traverse frame 4.
  • a bracket 8 is rigidly mounted on a free end portion of the holding stud 6.
  • the bracket 8 is provided with a boss 9 and mounting a conducting lever shaft 10 rotatably.
  • a yarn conducting lever 11 is rigidly supported at its lower end by the shaft 10.
  • the yarn conducting lever 11 is provided with a curved portion 11a formed at its free end portion so that a yarn 39 extended between the suction aperture 19 and the S- shape portion 2a of the yarn sliding guide bar 2 can be arranged like the yarn path shown in FIG. 5C from that shown in FIG. 5b when the conducting lever 11 is turned from its waiting position toward the yarn suction means 20.
  • a sprocket wheel 12 is secured to the shaft 10.
  • a lever handle 14 is turnably supported on a horizontal shaft 15 rotatably mounted at both ends thereof on a frame of the bracket 7, so that when the portion 14a of said lever handle 14 is manually moved so as to approach a projection 22 of the bracket 7 then the lever 14 can be turned counterclockwise about the horizontal shaft 15 (in FIG. 1).
  • a lever 35 is secured to the horizontal shaft 15 at a position facing a top free end portion 14a of the lever handle 14, and, as hereinafter described, when the pull lever 35 approaches or moves toward the projection 22 of the bracket 7, the rocking mechanism as shown in FIGS.
  • a lever 32 is mounted on one end of the shaft 15, and at a top portion of said lever 32 a small horizontal shaft 33 is provided, onto which a pair of pushing levers 34a, 34b are turnably mounted.
  • the normal turning motion of the traverse frame 4 during the winding operation can be also accomplished via this rocking mechanism via a displacement of the wedge 29, which displacement is induced by the increasing diameter of the bobbin.
  • the wedge mechanism 25 has a similar mechanism to that shown in a copending application, Ser. No. 4,243, now US. Pat. No. 3,695,521. Referring to FIGS. 3 and 4, the wedge mechanism 25 is provided with a bracket 27, which is rigidly secured to the bracket 7. A supporting member 28 mounted on the bracket 27 is slidably held within a hollow guide rail 24 which has a longitudinal slit opened below, consequently, the bracket 27 can be displaced along the longitudinal slit so that the bracket 7 and traverse frame 4 can be turned about the holding stud 6.
  • a balance weight or tension spring can be mounted so as to always pull the traverse frame 4 toward the bobbin 3a.
  • it is also required to restrict the free displacement of the bracket 27 along the above-mentioned holow guide rail 24.
  • This restriction is attained by the wedge mechanism 25, which comprises a wedge 29 and a pair of rolls 30a, 30b and a pair of springs 31a, 31b which always urge the respective roll 30a, 30b to the corresponding wedge surfaces 29a, 29b and inside surfaces of the hollow guide rail 24.
  • the wedge 29 is secured upon the supporting member 28 and the springs 31a, 31b are arranged between a vertical wall 28a of supporting member 28 and the roller 30 a, 30b respectively.
  • Each roller or roll 30a or 30b is positioned in the respective wedge space defined by the wedge surface 29a or 29b of the wedge 29 and the inside walls of the hollow guide rail 24 in such a way that the ends of the pushing levers 34a, 34b can push the respective rolls 30a, 30b towards the vertical wall 280 against the force of the spring 31a, 31b.
  • a chain 13 is engaged with the sprocket wheel 12 and an end thereof is connected to a tension spring 16 while the other end 13a thereof is secured to the bottom end of the lever handle 14, and the other end of the spring 16 is secured to the bracket 8 as shown in FIG. 1.
  • the sprocket wheel 12 on the conducting lever shaft 10 is rotated counterclockwise in FIG. 1 so that the yarn conducting or guiding lever 11 is turned from its waiting position as shown in FIG. 5A to its working position as shown in FIG. 5C by the counter-clockwise turning motion of the conducting lever shaft 10.
  • the above-mentioned waiting position of the yarn conducting lever 11 corresponds to the position of the traverse frame 4 when the package becomes full size
  • the working position of the yarn conducting lever 11 corresponds to the position of the traverse frame 4 when a fresh bare bobbin 3a is mounted on the bobbin holder 1 and the traverse frame 4 is positioned its starting position for winding operation.
  • the yarn conducting lever 11 When the yarn conducting lever 11 is turned, the lever 11 crosses a straight line between a hook portion of the S-shape portion 2a of the yarn sliding guide bar 2 and the suction aperture 19.
  • the bobbin holder 1 is provided with a pair of notches 1a, lb as shown in FIGS. 2A, 2B which are formed at a free end portion thereof.
  • a catcher 17 is secured to each notch 1a or lb.
  • the catcher 17 is made of a thin metallic plate having a hook which catches a yarn in a manner which will be illustrated hereinafter. It is preferable to secure a protecting cover 18 on the end of the bobbin holder 1 by a bolt 18b, so as to prevent hurting any portions of the human body.
  • the protecting cover 18 is provided with a pair of cut out portions 18a which are formed at the corresponding position to the cut portions 1a, lb of the bobbin holder 1 so that the function of the catcher 17 is not affected.
  • the above-mentioned catching device of the present invention is operated as hereinafter illustrated.
  • the supplied yarn 39 is led to the bobbin 3a via a guide roller 23, the yarn sliding guide bar 2, a traverse guide 34 (not shown) of the traverse frame 4 and a roller 21.
  • the suction aperture 19 of the suction means 20 is firstly opened by turning the handle 36 so as to be able to suck the free end of the supplied yarn 39, and then the supplied yarn 39 is cut, next the free end of the supplied yarn is led to the suction aperture 19 manually.
  • the supplied yarn 39 is fed into the suction means 20 via the guide roller 23, the yarn sliding guide bar 2, and the suction aperture 19, as shown in FIG. 58.
  • the full package bobbin 3b is taken from the bobbin holder 1 and next a fresh bare bobbin is mounted on the bobbin holder 1.
  • a portable suction device (not shown) can be used for catching the cut end of the supplied yarn after cutting the yarn.
  • the end of supplied yarn can be straightway led to the suction aperture 19 by transferring the free end of the supplying yarn to suction aperture 19 by means of a proper portable suction device or manually.
  • the cutting operation is carried out after leading the supplied yarn into the suction means 20, that is, a portion of the supplied yarn between the full package 3b and the traverse guide 34 is caught by a hook (not shown) and this portion of the yarn is led to the suction aperture 19 after opening by the handle 36.
  • the yarn between the full package 3b and the suction aperture 19 is cut manually.
  • the lever 35 is operated as already illustrated so as to release the locking of the wedge mechanism 25 by way of rotation of the horizontal shaft 15, and the traverse frame 4 is turned about the holding stud 6 counterclockwise in FIG. 5B until the traverse frame 4 is positioned at its starting position as shown in FIG. 5C.
  • the lever handle 14 is urged towards the projection 22 manually so that lever handle 14 is turned about the shaft 15 continuously. Therefore, the sprocket wheel 12 is rotated counterclockwise, that is, the yarn conducting or guiding lever 11 is turned counter-clockwise together with the conducting lever shaft 10 until the displacing motion of the traversing frame 4 is stopped.
  • the curved portion 11a of the yarn conducting lever 11 catches a portion of the supplied yarn between the yarn sliding guide bar 2 and the suction aperture 19 during its turning motion and displaces the contacted portion of the yarn to the position as shown in FIG. 5C.
  • the supplied yarn between the yarn sliding guide bar 2 and the suction aperture 19 passes along two straight-line paths 40a, 40b defined by the final position of the yarn conducting lever 11.
  • the final position of the yarn conducting lever 11 is so arranged that the yarn pass 40a passes across the rotational locus of the catcher 17 mounted on the bobbin holder 1 and thus the yarn may be caught by this catcher 17.
  • a cutter 37 mounted on the suction means 20 is actuated to cut the yarn between yarn conducting lever 11 and the suction aperture 19 and then the suction aperture 19 is closed by turning the handle 36. By these operation, the excess yarn is sucked into the suction means 20 while the remaining twisted, due to the rotation of the protecting cover 18.
  • the mechanism of the catching device of the present invention is very simple, however, the function of it is very speedy and reliable, and further, the operating efficiency is very high.
  • the catching device of the present invention is a very practical mechanism which can be applied for the spindle winder.
  • an improve ment comprising a guide bar mounted on said traverse mechanism and extending along said bobbin holder to an extent no further than a free end portion of said bobbin holder, said guide bar having a curved portion at a free end thereof, suction means disposed below said spindle in spaced-apart relationship from said bobbin holder, a guiding lever engageable with the supplied yarn for guiding same along a yarn passage between said curved portion of said guide bar and said suction means at a predetermined position for leading the yarn in a contacting condition with a free end portion of said bobbin holder
  • suction means includes means defining a suction aperture having a shutter disposed prises a sprocket wheel mounted on said shaft, a dog lever turnably mounted on a part of said means for releasing said wedge mechanism, a spring secured at one end upon a portion of said bracket, a chain connected at one end to the other end of said spring and connected at the other end to a bottom end portion of said dog lever while engaging with said sprocket wheel, whereby when said dog lever is turned, said chain is driven in a way that said spring is extended so that said guiding lever can be turned outwardly.

Landscapes

  • Winding Filamentary Materials (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
US00185673A 1971-05-19 1971-10-01 Bobbin exchange mechanism of a yarn winder Expired - Lifetime US3777996A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46033737A JPS5011493B1 (enrdf_load_stackoverflow) 1971-05-19 1971-05-19

Publications (1)

Publication Number Publication Date
US3777996A true US3777996A (en) 1973-12-11

Family

ID=12394702

Family Applications (1)

Application Number Title Priority Date Filing Date
US00185673A Expired - Lifetime US3777996A (en) 1971-05-19 1971-10-01 Bobbin exchange mechanism of a yarn winder

Country Status (5)

Country Link
US (1) US3777996A (enrdf_load_stackoverflow)
JP (1) JPS5011493B1 (enrdf_load_stackoverflow)
FR (1) FR2137438B1 (enrdf_load_stackoverflow)
GB (1) GB1354100A (enrdf_load_stackoverflow)
IT (1) IT946661B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964722A (en) * 1974-06-03 1976-06-22 Allied Chemical Corporation Transfer tail apparatus and method for vertical spindle winder
US4061285A (en) * 1976-05-12 1977-12-06 Owens-Corning Fiberglas Corporation Method and apparatus for packaging linear material
US4069983A (en) * 1975-04-17 1978-01-24 Teijin Limited Method and device for forming a bunch winding on a fresh bobbin at the time of a doffing and donning operation
US4093134A (en) * 1977-05-23 1978-06-06 Eastman Kodak Company Method and apparatus to reduce waste yarn during tie-up of yarn winders

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102219135B (zh) * 2011-04-29 2012-09-05 宁波竞宏服饰有限公司 绕线机下线轴装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1799153A (en) * 1928-01-04 1931-04-07 Universal Winding Co Winding machine
US2870971A (en) * 1953-01-15 1959-01-27 Universal Winding Co Winding machine and method of doffing and thread-in
US3034736A (en) * 1960-04-13 1962-05-15 Du Pont Method of repairing a yarn break
US3224692A (en) * 1962-10-19 1965-12-21 Du Pont Transfer tail winding apparatus
US3276704A (en) * 1963-12-31 1966-10-04 Du Pont Transfer tail winder
US3282516A (en) * 1965-07-23 1966-11-01 Du Pont Yarn windup
US3587989A (en) * 1969-02-05 1971-06-28 Don E Fisher Traverse guide assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1799153A (en) * 1928-01-04 1931-04-07 Universal Winding Co Winding machine
US2870971A (en) * 1953-01-15 1959-01-27 Universal Winding Co Winding machine and method of doffing and thread-in
US3034736A (en) * 1960-04-13 1962-05-15 Du Pont Method of repairing a yarn break
US3224692A (en) * 1962-10-19 1965-12-21 Du Pont Transfer tail winding apparatus
US3276704A (en) * 1963-12-31 1966-10-04 Du Pont Transfer tail winder
US3282516A (en) * 1965-07-23 1966-11-01 Du Pont Yarn windup
US3587989A (en) * 1969-02-05 1971-06-28 Don E Fisher Traverse guide assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964722A (en) * 1974-06-03 1976-06-22 Allied Chemical Corporation Transfer tail apparatus and method for vertical spindle winder
US4069983A (en) * 1975-04-17 1978-01-24 Teijin Limited Method and device for forming a bunch winding on a fresh bobbin at the time of a doffing and donning operation
US4061285A (en) * 1976-05-12 1977-12-06 Owens-Corning Fiberglas Corporation Method and apparatus for packaging linear material
US4093134A (en) * 1977-05-23 1978-06-06 Eastman Kodak Company Method and apparatus to reduce waste yarn during tie-up of yarn winders

Also Published As

Publication number Publication date
FR2137438A1 (enrdf_load_stackoverflow) 1972-12-29
FR2137438B1 (enrdf_load_stackoverflow) 1973-06-29
GB1354100A (en) 1974-06-05
JPS5011493B1 (enrdf_load_stackoverflow) 1975-05-01
DE2159632B2 (de) 1977-03-24
DE2159632A1 (de) 1972-11-23
IT946661B (it) 1973-05-21

Similar Documents

Publication Publication Date Title
US4601434A (en) Package transporting apparatus
US4154409A (en) Method and device for securing a reserve winding on a tube
US3777996A (en) Bobbin exchange mechanism of a yarn winder
US3275252A (en) Transfer tail winding
JPS6013941B2 (ja) 糸捲機における異常糸継防止方法
WO2002053822A1 (fr) Machine a coudre
US4002305A (en) Device for forming a tail wind around a bobbin held by a take-up mechanism of a ringless spinning machine
US3778996A (en) Method for doffing a bobbin and forming a transfer tail
US1995730A (en) Winding machine
JPH0244747B2 (enrdf_load_stackoverflow)
JPS6131703B2 (enrdf_load_stackoverflow)
US5417045A (en) Traveller changer
US3026054A (en) Yarn end locating attachment for an automatic winder
JPS6081343A (ja) 精紡機用糸継方法
JPH09323868A (ja) 巻取装置
JP2810882B2 (ja) 糸の連続小割装置
JPH0152302B2 (enrdf_load_stackoverflow)
JP3750401B2 (ja) 自動ワインダーの玉揚げ装置
JPS6038615Y2 (ja) ボビン切出し装置を有するボビン供給移動車
JPH11268874A (ja) 紡糸巻取機
JPH09202521A (ja) 玉揚装置
JPS6145089Y2 (enrdf_load_stackoverflow)
JP2002370868A (ja) トラバース装置
SU33807A1 (ru) Устройство дл непрерывного демонстрировани кинолент
JPH0232378B2 (ja) Itokaryorikiniokerupatsukeejinotamaagehohooyobisochi