EP0477978B1 - Unwinding tension applying device for package - Google Patents
Unwinding tension applying device for package Download PDFInfo
- Publication number
- EP0477978B1 EP0477978B1 EP91116573A EP91116573A EP0477978B1 EP 0477978 B1 EP0477978 B1 EP 0477978B1 EP 91116573 A EP91116573 A EP 91116573A EP 91116573 A EP91116573 A EP 91116573A EP 0477978 B1 EP0477978 B1 EP 0477978B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- package
- friction
- disposed
- members
- operating
- 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
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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
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/08—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by contact of running length of material with supply package
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02H—WARPING, BEAMING OR LEASING
- D02H1/00—Creels, i.e. apparatus for supplying a multiplicity of individual threads
-
- 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 unwinding tension applying device for applying a predetermined unwinding tension to yarn when the yarn is unwound axially from a package (so-called a yarn supply pakage) formed by winding the yarn in a predetermind shape.
- yarn is wound round a bobbin into a predetermined shape and is handled as a package.
- a package P is mounted substantially horizontally on a creel frame (not shown) through a spindle SP, and sideways of the package P there is disposed a fixed rod RD in parallel with an axis Pc of the package P.
- a fixed rod RD Inside the friction member F is inserted the package F so that the friction member is entrained about the package.
- An intermediate part of the friction member F is passed round the fixed rod RD, and a weight W is inserted into an opposite end side of the friction member which side is hanging down.
- a tension according to the weight of the weight W is created in the friction member F, which in turn exerts a pushing force against the outer peripheral surface of the package P, so that a predetermined unwinding tension can be applied to the yarn Y being unwound from the surface or the package. This is because the yarn Y is drawn out in the direction of the axis Pc while being sandwiched in between the package P and the friction member F.
- FIG. 1 there is illustrated an unwinding tension applying device for a package according to a typical embodiment of the present invention.
- This unwinding tension applying device includes a pair of friction members 11, 11 disposed in a suspended fashion on both sides of a package 1, and operating members 21, 21, 22, 22 which are disposed exteriorly on both sides of the friction members.
- the package 1 is formed by winding yarn in a predetermined winding shape around a bobbin 1a.
- Its winding shape is usually a parallel cheese shape having parallel both ends as shown in Fig. 2(A), or it may have a tapered portion 1b at one end thereof as shown in Fig. 2(B), or it may have tapered portions 1b, 1b at both ends.
- a spindle 2a is projecting substantially horizontally from a creel frame 2, and the bobbin 1a of the package 1 is fitted on the spindle 2a, whereby the package 1 is mounted substantially horizontally on the creel frame 2.
- the friction members 11, 11 are each constituted by a band-like member having a predetermined width d so as to cover at least an end portion on a yarn Y draw-out side of the package 1, with their upper ends being fixed to the creel frame 2. Weights 11a, 11a are connected to the lower ends of the friction members 11, 11. It is here assumed that the spacing D between the friction members 11, 11 in a naturally suspended state is larger than a maximum diameter of the package 1.
- the friction members 11, 11 are each constituted by a sheet-like member such as, for example, cloth, plastic sheet, or rubber sheet, and can bend freely.
- the operating members 21, 21, 22, 22 are disposed outside the friction members 11, 11 and above and below the package 1, each in parallel with an axis 1c of the package 1.
- the operating members 21, 21, 22, 22 are each constituted by a rod which is longer than the width d of each friction member 11.
- Each pair of such operating members located on both sides of the friction members 11, 11 move toward each other and assume operating positions (indicated by dash-double dot lines in Fig. 1) and can also move away from each other and assume retracted positions (indicated by solid lines in Fig. 1).
- a friction member 11 is disposed on only one side and as an operating member corresponding thereto there is disposed only a lower operating member 22.
- the operating member 22 is fixed to a front end of a downwardly curved rocking arm 22a, which arm is constructed to pivot about a shaft 22b.
- the rocking arm 22a is moved pivotally in the direction of arrow in the same figure, the operating member 22 moves to an operating position 22', whereby the friction member 11 can be contacted with about a lower half of the peripheral surface of the package 1.
- a friction member 11 (see Fig. 6) also on the other side with respect to the package 1.
- the friction member 11 on the other side can be contacted with the package 1 from above by means of an operating member 21 which can largely move obliquely downwards.
- an auxiliary operating member 23 is disposed for the friction member 11 in question.
- the auxiliary operating member 23 slightly moves horizontally in synchronism with the operating member 21 to avoid mechanical interference with the friction member 11 associated with the operating member 22. It is desirable to constitute the auxiliary operating member 23 so that it moves back to its retracted position together with the operating member 21, thereby separating the friction member 11 farther from the package 1.
- FIG. 7 there is illustrated a further embodiment of the present invention, in which friction members 11 opposed to each other can be brought into contact with all of plural packages 1, 1 which are arranged vertically in parallel.
- upper ends of the friction members 11, 11 are connected to auxiliary operating members 24, 24 which can move horizontally in synchronism with operating members 21, 21, 22, 22, and lower ends of the friction members 11, 11 are interconnected while carrying a common weight 11a thereon.
- the friction members 11, 11 are pressed at three points - upper, middle and lower points - with respect to the packages 1, 1 by the auxiliary operating members 24, 24 and the operating members 21, 21, 22, 22, whereby the frictions members can be contacted with the packages simultaneously.
- packages 1, 1 arranged vertically in parallel can be increased optionally.
- packages 1, 1, ... may be arranged in plural parallel rows, and the auxiliary operating members 24, 24 and the operating members 21, 21, 22, 22 for each those rows may be driven between their operating positions and retracted positions simultaneously by means of a common driving mechanism.
- friction members 11, 11 are contacted in common with plural packages 1, 1, ... which are arranged laterally side by side.
- Operating members 21, 21, 22, 22, ... are disposed on both right and left sides of the packages 1, 1, ... and also in intermediate positions between adjacent packages in a vertically sandwiching relation to the friction members 11, 11.
- One ends of the friction members 11, 11 are fixed to a creel frame 2, while the other ends thereof are allowed to hang down and then connected together, with a weight 11a carried thereon.
- connection between the friction members 11, 11 may be rendered disengageable using such a connecting member as a zipper for example. This is convenient for changing the weight 11a to adjust the tension to be applied to the friction members 11, 11.
- each friction member 11 may be almost equal to or somewhat longer than the overall length of the package 1. Or the width d of the friction member 11 may be made extremely small into a thick string not permitting the engagement of the yarn Y therewith. Further, since the weight 11a is for applying an appropriate tension to the friction member 11, it may be substituted by a suitable spring member.
- friction members capable of being bent and operating members for bending the friction members into contact with a package are combined together, whereby upon movement of the operating members to their operating positions, an unwinding tension can be applied to yarn through the friction members, while upon movement of the operating members to their retracted positions, the friction members can be moved out of contact with the package.
- package replacement therefore, it is not necessary to pass the friction members round the package and disengage them from the package, whereby the working efficiency can be greatly improved. Further, the package replacement and a series of creel operations associated therewith can be automated easily.
- the present invention relates to an unwinding tension applying device for applying tension to yarn being unwound from a package formed by winding of the yarn thereon.
- this unwinding tension applying device friction members on which is exerted the gravity of weight or the tenseness of spring member are brought into contact with the outer periphery of the package by moving operating members close the package, whereby not only the occurrence of kinky thread (snarl) and the entanglement of yarn can be prevented, but also since the operating members and the friction members can be moved away from the package, it is possible to effect the package replacement easily.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Warping, Beaming, Or Leasing (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
Description
- The present invention relates to an unwinding tension applying device for applying a predetermined unwinding tension to yarn when the yarn is unwound axially from a package (so-called a yarn supply pakage) formed by winding the yarn in a predetermind shape.
- In the textile industry, in many cases yarn is wound round a bobbin into a predetermined shape and is handled as a package.
- When such packages are used for beaming process, for example a warp sizing process,it is necessary to arrange a large number of packages on a creel and unwind plural yarns simultaneously from those packages.
- In this case,if the yarns are unwound in the absence of tension,there may occur kinky thread (snarl) or entanglement of yarns,so during unwinding of the yarns from the packages it is necessary to apply suitable unwimding tension to the yarns,that is applying suitable resistance to unwinding the yarns.
- As an unwinding tension applying device used for such purpose it is known from the JP-patent publication No.Sho 53-1867 to use an endless cloth-like friction member F, as shown in Fig. 9. In the same figure, a package P is mounted substantially horizontally on a creel frame (not shown) through a spindle SP, and sideways of the package P there is disposed a fixed rod RD in parallel with an axis Pc of the package P. Inside the friction member F is inserted the package F so that the friction member is entrained about the package. An intermediate part of the friction member F is passed round the fixed rod RD, and a weight W is inserted into an opposite end side of the friction member which side is hanging down.
- A tension according to the weight of the weight W is created in the friction member F, which in turn exerts a pushing force against the outer peripheral surface of the package P, so that a predetermined unwinding tension can be applied to the yarn Y being unwound from the surface or the package. This is because the yarn Y is drawn out in the direction of the axis Pc while being sandwiched in between the package P and the friction member F.
- According to such prior art, at every replacement of packages from one to another it is required to bring the friction member F into engagement with the newly-set package. But the removal and mounting of the friction member with respect to the package are troublesome and the working efficiency is poor.
- Therefore, it is a primary object of the present invention to provide an unwinding tension applying device for a package capable of greatly improving the working efficiency in package replacement, etc. This object is achieved through a device according to
claim 1. -
- Fig. 1 is an explanatory front view showing an embodiment of the present invention;
- Figs. 2(A) to 2(C) are side views showing package winding shapes applicable to the present invention;
- Fig. 3 is a side view showing a principal portion of the embodiment illustrated in Fig. 1;
- Figs. 4, 5 and 6 are explanatory front views showing other embodiments of the present invention;
- Fig. 7 is an explanatory perspective view showing a further embodiment of the present invention;
- Fig. 8 is an explanatory front view showing a still further embodiment of the present invention; and
- Fig. 9 is an explanatory perspective view showing a conventional tension applying device.
- Referring first to Fig. 1, there is illustrated an unwinding tension applying device for a package according to a typical embodiment of the present invention. This unwinding tension applying device includes a pair of
friction members package 1, and operatingmembers - The
package 1 is formed by winding yarn in a predetermined winding shape around abobbin 1a. Its winding shape is usually a parallel cheese shape having parallel both ends as shown in Fig. 2(A), or it may have a taperedportion 1b at one end thereof as shown in Fig. 2(B), or it may have taperedportions spindle 2a is projecting substantially horizontally from acreel frame 2, and thebobbin 1a of thepackage 1 is fitted on thespindle 2a, whereby thepackage 1 is mounted substantially horizontally on thecreel frame 2. - As shown in Fig. 3, the
friction members package 1, with their upper ends being fixed to thecreel frame 2.Weights friction members friction members package 1. Thefriction members - The
operating members friction members package 1, each in parallel with anaxis 1c of thepackage 1. The operatingmembers friction member 11. Each pair of such operating members located on both sides of thefriction members - While the yarn Y is drawn out in the direction of the
axis 1c of thepackage 1 as shown in Fig.3,theoperating members friction members package 1 and can thereby be brought into contact with the peripheral surface of the package. At this time, since a tension according to the weight of eachweight 11a is applied downwards to eachfriction member 11, the yarn Y is sandwiched in between the surface of thepackage 1 and thefriction members - On the other hand, upon movement of the
operating members friction members package 1 and hang down vertically, so that any force is no longer exerted on the yarn Y being unwound from the package. In package replacement, therefore, the operation can be restarted by moving theoperating members new package 1 and thereafter returning thefriction members -
- There may be adopted such a construction as shown in Fig. 4, in which one of
lower operations members other operating member 22 is slightly moved horizontally to an operating position. The length of contact of thefriction member 11 associated with the largely movedoperating member 22 with respect to thepackage 1 can be adjusted over a wide range by adjusting the operating position of the said opeatingmember 22. Therefore, the magnitude of an unwinding tension to be applied to the yarn Y can also be adjusted over a wide range. - Also, there may be adopted such a construction as shown in Fig. 5, in which a
friction member 11 is disposed on only one side and as an operating member corresponding thereto there is disposed only alower operating member 22. Theoperating member 22 is fixed to a front end of a downwardly curved rockingarm 22a, which arm is constructed to pivot about ashaft 22b. When the rockingarm 22a is moved pivotally in the direction of arrow in the same figure, theoperating member 22 moves to an operating position 22', whereby thefriction member 11 can be contacted with about a lower half of the peripheral surface of thepackage 1. - In addition to the
friction member 11 used in the embodiment illustrated in Fig. 5 there may be disposed a friction member 11 (see Fig. 6) also on the other side with respect to thepackage 1. In this case, thefriction member 11 on the other side can be contacted with thepackage 1 from above by means of anoperating member 21 which can largely move obliquely downwards. In this case, anauxiliary operating member 23 is disposed for thefriction member 11 in question. Theauxiliary operating member 23 slightly moves horizontally in synchronism with theoperating member 21 to avoid mechanical interference with thefriction member 11 associated with theoperating member 22. It is desirable to constitute theauxiliary operating member 23 so that it moves back to its retracted position together with theoperating member 21, thereby separating thefriction member 11 farther from thepackage 1. - Referring now to Fig. 7, there is illustrated a further embodiment of the present invention, in which
friction members 11 opposed to each other can be brought into contact with all ofplural packages friction members auxiliary operating members operating members friction members common weight 11a thereon. Thefriction members packages auxiliary operating members operating members - In this embodiment, the number of the
packages packages auxiliary operating members operating members - There may be adopted such a structure as illustrated in Fig. 8, in which
friction members plural packages Operating members packages friction members friction members creel frame 2, while the other ends thereof are allowed to hang down and then connected together, with aweight 11a carried thereon. - In the embodiments illustrated in Figs. 7 and 8, the connection between the
friction members weight 11a to adjust the tension to be applied to thefriction members - In all of the above embodiments, it goes without saying that the width d of each
friction member 11 may be almost equal to or somewhat longer than the overall length of thepackage 1. Or the width d of thefriction member 11 may be made extremely small into a thick string not permitting the engagement of the yarn Y therewith. Further, since theweight 11a is for applying an appropriate tension to thefriction member 11, it may be substituted by a suitable spring member. - According to the present invention, as set forth above, friction members capable of being bent and operating members for bending the friction members into contact with a package are combined together, whereby upon movement of the operating members to their operating positions, an unwinding tension can be applied to yarn through the friction members, while upon movement of the operating members to their retracted positions, the friction members can be moved out of contact with the package. In package replacement, therefore, it is not necessary to pass the friction members round the package and disengage them from the package, whereby the working efficiency can be greatly improved. Further, the package replacement and a series of creel operations associated therewith can be automated easily. These excellent effects are attained by the present invention.
- The present invention relates to an unwinding tension applying device for applying tension to yarn being unwound from a package formed by winding of the yarn thereon. According to this unwinding tension applying device, friction members on which is exerted the gravity of weight or the tenseness of spring member are brought into contact with the outer periphery of the package by moving operating members close the package, whereby not only the occurrence of kinky thread (snarl) and the entanglement of yarn can be prevented, but also since the operating members and the friction members can be moved away from the package, it is possible to effect the package replacement easily.
Claims (6)
- An unwinding tension applying device for a package (1), having a friction meter (11) capable of being bent and disposed sideways of the package (1) in contact with an outer peripheral surface of the package (1), having a weight (11a) or a spring member connected to the said friction member (11) in order to keep the friction member (11) in a tense state, characterized in that an operating member (22) parallel to a package axis (1c) and capable of approaching and leaving the package (1) is disposed outside the friction meter (11).
- An unwinding tension applying device for a package according to claim 1, wherein said friction member (11) is disposed on either the right or the left side of the package (1) or on both right and left saides of the package, and a pair of operating members (21, 22) are disposed above and below the package (1).
- An unwinding tension applying device for a package according to claim 1, wherein said friction member (11) is disposed either above or below the package (1) or both above and below the package, and a pair of operating members (21, 22) are disposed on the right and left sides of the package (1).
- An unwinding tension applying device for a package according to claim 1, wherein said operating member (22) is disposed pivotably through a shaft (22b) and a rocking arm (22a).
- An unwinding tension applying device for a package according to claim 4, wherein another operating member (21) is disposed in a position opposed to the operating member (22) with the package located therebetween.
- An unwinding tension applying device according to any of claims 1, 2 and 3, wherein plural said friction members (11) are disposed along plural package rows.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP262826/90 | 1990-09-28 | ||
JP2262826A JP2883710B2 (en) | 1990-09-28 | 1990-09-28 | Package unwinding tension applying device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0477978A1 EP0477978A1 (en) | 1992-04-01 |
EP0477978B1 true EP0477978B1 (en) | 1994-12-28 |
Family
ID=17381152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91116573A Expired - Lifetime EP0477978B1 (en) | 1990-09-28 | 1991-09-27 | Unwinding tension applying device for package |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0477978B1 (en) |
JP (1) | JP2883710B2 (en) |
KR (1) | KR0180743B1 (en) |
DE (1) | DE69106295T2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29702151U1 (en) * | 1997-02-08 | 1998-06-10 | Sucker Mueller Hacoba Gmbh | Device for delimiting thread balloons |
JP4208416B2 (en) * | 1998-03-03 | 2009-01-14 | アプリケータ システム アクチボラゲット | Yarn entanglement prevention mechanism for yarn supply buffer |
IT1320864B1 (en) * | 2000-12-22 | 2003-12-10 | M M Di S Ferraris & C S N C Sa | DEVICE TO CONTROL THE YARN UNWINDING FROM A SPOOL. |
KR100432433B1 (en) * | 2002-03-29 | 2004-05-22 | 애드윈코리아 주식회사 | Disposable towel and method for preparing the same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB640967A (en) * | 1948-02-05 | 1950-08-02 | Courtaulds Ltd | Improvements in and relating to apparatus for use in withdrawing twisted yarn from yarn packages |
FR967688A (en) * | 1948-06-07 | 1950-11-09 | Simon Ets | Braking device for the wire unwound at the end from a conical spool |
NL6405516A (en) * | 1964-05-16 | 1965-11-17 | ||
CH515175A (en) * | 1969-12-31 | 1971-11-15 | Galileo Spa Off | Device for avoiding the formation of the balloon during the unwinding of the yarn from the weft feeding bobbins in looms without shuttle |
FR2186949A5 (en) * | 1972-05-31 | 1974-01-11 | Roannais Constr Textiles | Yarn let-off device with tensioner - comprising a ring pressed tangentially against yarn package |
DE2449267C3 (en) * | 1974-10-16 | 1978-05-11 | Evolution S.A., Rorschach, St. Gallen (Schweiz) | Unwinding device |
-
1990
- 1990-09-28 JP JP2262826A patent/JP2883710B2/en not_active Expired - Fee Related
-
1991
- 1991-09-10 KR KR1019910015784A patent/KR0180743B1/en not_active IP Right Cessation
- 1991-09-27 DE DE69106295T patent/DE69106295T2/en not_active Expired - Fee Related
- 1991-09-27 EP EP91116573A patent/EP0477978B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69106295D1 (en) | 1995-02-09 |
JPH04146228A (en) | 1992-05-20 |
KR0180743B1 (en) | 1999-02-01 |
DE69106295T2 (en) | 1995-05-18 |
KR920006553A (en) | 1992-04-27 |
EP0477978A1 (en) | 1992-04-01 |
JP2883710B2 (en) | 1999-04-19 |
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