EP0458088A1 - Dispositif de sectionnement pour une broche d'un métier à filer ou à retordre - Google Patents
Dispositif de sectionnement pour une broche d'un métier à filer ou à retordre Download PDFInfo
- Publication number
- EP0458088A1 EP0458088A1 EP91106837A EP91106837A EP0458088A1 EP 0458088 A1 EP0458088 A1 EP 0458088A1 EP 91106837 A EP91106837 A EP 91106837A EP 91106837 A EP91106837 A EP 91106837A EP 0458088 A1 EP0458088 A1 EP 0458088A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- notches
- spindle
- thread
- ring
- cutting
- 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.)
- Granted
Links
- 238000009987 spinning Methods 0.000 title claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 26
- 230000001154 acute effect Effects 0.000 claims description 6
- 229910000639 Spring steel Inorganic materials 0.000 claims description 2
- 238000007378 ring spinning Methods 0.000 abstract description 5
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 208000014674 injury Diseases 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 210000002105 tongue Anatomy 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- D01H9/16—Yarn-severing arrangements, e.g. for cutting transfer tails; Separating of roving in flyer
Definitions
- the invention relates to a thread separating device for a spindle of a spinning or twisting machine with an annular body which sits between a sleeve receptacle of the spindle and a winding point of the spindle which serves to fix a spinning thread and which has a rim which projects from the spindle in the radial direction and which coexists is provided several notches tapering inwards at an acute angle, the edges of which are designed as cutting edges.
- a so-called spinning is carried out after the cops have been finished, by means of which the machine is prepared for an automatic cop change.
- the ring bench moves relatively quickly to the lower region of the bobbin tubes, so that a thread of a cop is guided downward in relatively steep helical lines over the cop to a winding point at which it forms the so-called twists in several turns. These fix the spinning thread on the spindle, so that after replacing the full cops with empty tubes it can be spun again.
- the threads between the winding on the bobbin tubes and the windings on the spindles should be separated.
- the invention has for its object to provide a thread cutting device of the type mentioned, which is easy to manufacture and allows a safe cutting of the thread without performing a rotational movement.
- This output is achieved in that the body has a substantially cup-shaped shape and that the edge provided with the notches faces the winding point with an inclination of approximately 45 ° to approximately 65 ° to the spindle axis.
- the thread When spinning, the thread is inserted into one of the notches at the transition from the bobbin winding on the bobbin tube to the winding on the spindle.
- the thread When the cop is pulled off the spindle, the thread is subjected to tension and drawn deeper into the notch, the cutting edges located in the tip of the notch being directed essentially against the direction of the resulting thread pulling force.
- the thread In the area of the tip of the notch, the thread is cut from two sides by the cutting edges lying on both sides of the thread. This ensures that the major part of the fibers of the thread is actually cut and not torn. In practical tests, the safe functioning of the invention has also been found to be with tear-resistant threads.
- the area of the edges of the notches which is designed as a cutting, ends at a distance from the outer edge. This avoids the risk of injury to an operator since there are no exposed sharp edges.
- the edges of the notches can each merge into the outer edge with a curve.
- This round inlet increases the threading security that the thread gets into a notch.
- these curves further reduce the possibility of injuries.
- the notches are given an apex angle of approximately 20 ° to approximately 30 °.
- the cutting effect is improved by this acute angle.
- this acute angle reduces the possibility of an operator getting into the notches with one finger.
- the essentially pot-shaped body with a cover except for the area of the notches.
- This cover is preferably made of plastic, provides further protection against injury for the operator.
- the cover is part of a ring which forms the sleeve receptacle and can be fastened to the spindle.
- the ring is provided with notches at an axial distance from the notches of the essentially pot-shaped body, the depth of which corresponds at least approximately to the depth of the notches of the essentially pot-shaped body.
- the cover which is a vertebral crown, has the same number of notches as the cup-shaped body, which lie axially over the notches of the body.
- the thread runs from the cop winding to the winding over the whirl crown and pot-shaped cutting body in a helical line, it is not inserted in notches of the whirl crown and the body lying directly one above the other, but in notches which are offset from one another in accordance with the helical line.
- the ring is designed as a fastening means for the pot-shaped body, with which it is secured in the upper part of the spindle in the axial direction and in the circumferential direction.
- the whirl crown holds the cup-shaped cutting body on a ring collar of the upper part of the spindle.
- tongues can be formed which engage in axial recesses on the inside of the whirling crown and secure it in the circumferential direction.
- the vertebral crown can be secured in the axial direction, for example, by latching with the upper part of the spindle, for example, by means of snap noses formed on the vertebral crown.
- Spinning or twisting machines each have a multiplicity of spinning positions which are arranged at a distance from one another in their longitudinal direction on at least one machine side. At each of these spinning stations a spindle is provided which is driven to wind up a thread supplied by the upstream spinning elements.
- An example of a spindle on a ring spinning machine is described below with reference to the drawings.
- Such a spindle essentially consists of a spindle upper part 1, which has a spindle shaft 3, on which an attachment 23 having a sleeve receptacle 2 is non-rotatably attached, and a whorl 22 attached to the attachment 23 below the sleeve receptacle 2.
- the spindle shaft 3 is in one - Spindle bearing housing, not shown, which is held in a spindle bank rigidly connected to the machine frame of the ring spinning machine.
- the sleeve receptacle 2 of the upper spindle part 1 is used to attach a sleeve onto which a thread supplied by a drafting device is wound to form a bobbin.
- the upper spindle part 1 Concentric to its central longitudinal axis 24, the upper spindle part 1 is surrounded by a ring 4, which is arranged in a ring bench that performs lifting movements.
- On the ring 4 runs - not shown - runner, from which a thread 10 is deflected to the cop on the sleeve.
- the upper spindle part 1 is driven, for example, by a tangential belt, not shown, which bears against the whorl 22.
- a known automatic cop changing device is used to exchange finished cops on a ring spinning machine for empty cores.
- the ring bench moves relatively quickly downward from its upper reversal point, so that the thread 10 is wound onto the cop with a steep slope.
- the thread 10 is wound in tight helices as underwindings on the knurling.
- the ring bench remains in its lowest position. Now the cop change takes place by pulling off the sleeves carrying the cop windings.
- the thread 10 is to be cut on each spindle between bobbin winding and winding.
- the thread cutting device described below is used for this purpose.
- 1 to 3 consists of a cutting body 14 which is thin-walled.
- the wall of the cutting body widens in the shape of a truncated cone at an angle 17 to the horizontal of preferably 35 °.
- notches 11 formed symmetrically to a radial run into the wall of the cutting body 14.
- the cutting body 14 has 12 notches 11 distributed over its circumference. 2 and 3, these notches 11 are V-shaped with an acute angle 18, which is approximately 20 °.
- Each notch 11 is sharpened to a cutting edge 20 on both edges, which end from a vertex 21 of the notches 11 to the outer edge in front of the outlet of the notches 11 in order not to cause any risk of injury.
- Each edge of a notch 11 runs towards the outer edge into a curve 19 which on the one hand facilitates the threading of a thread 10 and on the other hand further reduces the risk of injury.
- the end of the cutting body 14 opposite the outer edge of the wall has crown-like tongues 16 which have a substantially square or rectangular shape and are spaced apart from one another over the circumference of the cutting body 14.
- the entire cutting body 14 is punched out of a thin, preferably 0.4 mm thick spring steel sheet.
- the notches 11 are sharpened to cut 20 For example, by grinding, the edges being sharpened into the area of the apex 21.
- the cutting body 14 rests on an annular shoulder 6 arranged on the whorl 22 above the annular collar 5.
- a whirl crown also serves as a cover 8.
- the tongues 16 of the cutting body 14 engage in longitudinal grooves 12 on the inside of the annular cover 8, as a result of which the cutting body is held against rotation by the cover 8.
- the cover 8 is also provided with inwardly projecting locking lugs 13, which engage in a circumferential annular groove 7 provided above the ring shoulder 6 on the whorl 22 and thus secure the cutting body and the cover 8 in the axial direction.
- the top of the cutting body 14 is covered by the cover 8 made of plastic.
- the cover 8 In its lower region it corresponds to the frustoconical pot shape of the cutting body 14, so that it lies flush against it.
- twelve notches 9 are provided distributed over its circumference.
- the edge of the lower region of the cover 8 is also provided with notches 32 which, corresponding to the notches 11 of the cutting body, run symmetrically inward from the edge of the cover 8 to radials. In order not to impair the cutting action of the cutting body, the notches 32 are wider and deeper than the notches 11.
- the edge of the cover 8 preferably overlaps the edge of the cutting body 14 in order to rule out injuries to an operator on the cutting body.
- the notches 9 in the upper region of the cover 8 are arranged corresponding to the notches 32 axially above the latter. They serve to guide and deflect the thread 10 between the bobbin winding and the winding. Since the thread 10 runs helically over the thread separating device between the bobbin winding and the winding, it does not lie in notches 11, 32, 9 lying axially one above the other, but in a notch 9 which is offset according to the helix to a notch 11 or 32.
- a thread remover 15 which is arranged in a stationary manner at each spinning station and which can be delivered to the ring bundle 5 by means not shown, is provided.
- This thread remover 15 dips into the cavity formed below the ring shoulder 6 by the cup shape of the cutting body 14 and separates the thread 10 stretched there.
- the thread remover 15 is pressed against the knurling of the ring collar 5, whereby the windings are released.
- FIGS. 4 and 5 Another embodiment of a cutting body 25 according to FIGS. 4 and 5 has eight double notches 28 distributed over the circumference.
- Each of the double notches 28 also begins at the outer edge 27 of the wall 26 and forms two single notches, the center lines of which are mirror-symmetrical to radial to the spindle axis.
- the individual notches aligned in one or the other circumferential direction are used.
- Each of these individual notches has a front cutting edge 29 and a rear cutting edge 31 which taper towards one another and form an acute apex 30.
- a cover made of plastic and provided with inserted metal plates serves as a thread separating device. There is no separate cutting body here.
- the pot-like cover which also widens in the shape of a truncated cone, is symmetrical with radial to the spindle axis from the outer edge to the inside running, V-shaped notches.
- Thin, sharpened metal plates are arranged on both sides of the notches so that they protrude into the notches and overlap in the region of the apex of these notches.
- the metal plates are, for example, screwed to the cover or inserted from the outer edge into slots provided in the wall along the edges at the level of the notches. It is also possible to clamp the metal plates by means of clamping parts detachably connected to the cover. In this way, very sharp notches delimited by cutting edges can be achieved.
- FIGS. 6, 7 and 8 Another possibility of achieving sharpened cutting edges into the bottom of the apex formed by the cutting edges, by means of which even very thin threads can be cut reliably, is, according to FIGS. 6, 7 and 8, to design the cutting body with two shells and those with notches provided shells 32, 33 to be rotated so that the cutting edges 34 and 35 of their notches intersect.
- the cutting edges of the two shells 32, 33 are advantageously ground in opposite directions in such a way that they lie at a point of intersection 36 without one another.
- each notch need only have a sharpened cutting edge, which does not need to be sharpened into the apex of the notch. This facilitates and reduces the cost of producing the cutting bodies and sharpening the cutting edges.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4015707A DE4015707A1 (de) | 1990-05-16 | 1990-05-16 | Fadentrenneinrichtung fuer eine spindel einer spinn- oder zwirnmaschine |
DE4015707 | 1990-05-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0458088A1 true EP0458088A1 (fr) | 1991-11-27 |
EP0458088B1 EP0458088B1 (fr) | 1994-09-07 |
Family
ID=6406531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91106837A Expired - Lifetime EP0458088B1 (fr) | 1990-05-16 | 1991-04-26 | Dispositif de sectionnement pour une broche d'un métier à filer ou à retordre |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0458088B1 (fr) |
JP (1) | JP2994787B2 (fr) |
DE (2) | DE4015707A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH711691A1 (de) * | 2015-10-28 | 2017-04-28 | Rieter Ag Maschf | Spindel für eine Arbeitsstelle einer Textilmaschine mit einer Trennvorrichtung. |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4336359A1 (de) * | 1993-10-25 | 1995-04-27 | Zinser Textilmaschinen Gmbh | Fadentrennvorrichtung einer Ringspinn- oder -zwirnspindel |
DE9319252U1 (de) * | 1993-12-15 | 1994-02-17 | Zinser Textilmaschinen Gmbh, 73061 Ebersbach | Vorrichtung zum Entfernen von Fadenwindungen im Unterwindebereich von Spindeln einer Ringspinn- oder -zwirnmaschine |
DE4436790C2 (de) * | 1994-10-14 | 1999-07-29 | Rieter Ag Maschf | Spinnstelle |
DE19503042C2 (de) * | 1995-02-01 | 1997-01-23 | Zinser Textilmaschinen Gmbh | Verfahren zum Trennen von Anspinnfäden an Ringspinnmaschinen und hierfür eingerichtete Ringspinnmaschine |
DE19746536C2 (de) * | 1997-10-22 | 2002-08-01 | Zinser Textilmaschinen Gmbh | Ringspinnspindel mit einem Trennmesser |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2461621A1 (de) * | 1973-12-27 | 1975-07-24 | Toyoda Automatic Loom Works | Schneidvorrichtung fuer textilmaschinen |
DE3202888A1 (de) * | 1981-01-29 | 1982-09-09 | Société Alsacienne de Constructions Mécaniques de Mulhouse, 68100 Mulhouse, Haut-Rhin | Verfahren und vorrichtung zum fadenschneiden beim automatischen abziehen der spulen auf einer spindeltextilmaschine |
EP0278561A1 (fr) * | 1987-02-13 | 1988-08-17 | SAVIO S.p.A. | Broche d'un métier à filer ou à retordre |
EP0292856A1 (fr) * | 1987-05-26 | 1988-11-30 | Odawara Industry Co., Ltd. | Appareil pour traiter le bout d'un fil pour dispositif de broche textile |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1760184C3 (de) * | 1968-04-13 | 1978-12-07 | Zinser Textilmaschinen Gmbh, 7333 Ebersbach | Spindel für Streckzwirn-, Spinnoder Zwirnmaschinen |
DD109039A1 (fr) * | 1973-12-03 | 1974-10-12 | ||
FR2506794A1 (fr) * | 1981-06-01 | 1982-12-03 | Alsacienne Constr Meca | Dispositif pour la coupe du fil au cours de la levee automatique des bobines sur une machine textile a broches |
-
1990
- 1990-05-16 DE DE4015707A patent/DE4015707A1/de active Granted
-
1991
- 1991-04-26 EP EP91106837A patent/EP0458088B1/fr not_active Expired - Lifetime
- 1991-04-26 DE DE59102804T patent/DE59102804D1/de not_active Expired - Fee Related
- 1991-05-14 JP JP3109292A patent/JP2994787B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2461621A1 (de) * | 1973-12-27 | 1975-07-24 | Toyoda Automatic Loom Works | Schneidvorrichtung fuer textilmaschinen |
DE3202888A1 (de) * | 1981-01-29 | 1982-09-09 | Société Alsacienne de Constructions Mécaniques de Mulhouse, 68100 Mulhouse, Haut-Rhin | Verfahren und vorrichtung zum fadenschneiden beim automatischen abziehen der spulen auf einer spindeltextilmaschine |
EP0278561A1 (fr) * | 1987-02-13 | 1988-08-17 | SAVIO S.p.A. | Broche d'un métier à filer ou à retordre |
EP0292856A1 (fr) * | 1987-05-26 | 1988-11-30 | Odawara Industry Co., Ltd. | Appareil pour traiter le bout d'un fil pour dispositif de broche textile |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH711691A1 (de) * | 2015-10-28 | 2017-04-28 | Rieter Ag Maschf | Spindel für eine Arbeitsstelle einer Textilmaschine mit einer Trennvorrichtung. |
WO2017072619A1 (fr) | 2015-10-28 | 2017-05-04 | Maschinenfabrik Rieter Ag | Dispositif de séparation |
CN108138386A (zh) * | 2015-10-28 | 2018-06-08 | 里特机械公司 | 切断装置 |
CN108138386B (zh) * | 2015-10-28 | 2022-07-19 | 里特机械公司 | 切断装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2994787B2 (ja) | 1999-12-27 |
JPH04228629A (ja) | 1992-08-18 |
DE4015707C2 (fr) | 1992-05-27 |
DE59102804D1 (de) | 1994-10-13 |
DE4015707A1 (de) | 1991-11-21 |
EP0458088B1 (fr) | 1994-09-07 |
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