Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H7/00—Spinning or twisting arrangements
  • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
  • D01H7/52—Ring-and-traveller arrangements
  • D01H7/62—Arrangements providing lubricant for travellers
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H7/00—Spinning or twisting arrangements
  • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
  • D01H7/52—Ring-and-traveller arrangements
  • D01H7/60—Rings or travellers; Manufacture thereof not otherwise provided for ; Cleaning means for rings
  • D01H7/602—Rings

Definitions

• the present invention relates to a yarn guide ring for a ring spinning machine or a twisting machine with a running surface for a ring traveler, which deflects the yarn during winding of a thread on a spool and is thereby moved by the thread along the tread.
• the general task of a ring spinning machine is to impart strength to a fiber structure supplied to it by twisting and to wind the twisted fiber structure in a form suitable for storing, transporting and further processing.
• the fiber bundle fed to the ring spinning machine is usually a so-called roving, which generally has only a weak protective rotation. From this roving is formed by further twisting a so-called yarn.
• a twisting machine has the task of twisting a plurality of simultaneously supplied yarns together, so that a so-called yarn is formed.
• This thread should also be wound up in a convenient form.
• a strand-shaped fiber strand is twisted and then wound up.
• Such fiber composites are hereinafter referred to uniformly as a thread.
• the said machines have for winding the thread on a take-up device which comprises a spindle rotating about a generally vertically arranged spindle.
• the actively driven spindle in this case carries a bobbin tube for receiving the thread.
• the winding device further comprises a thread guide ring which is arranged concentrically to the bobbin tube.
• the thread guide ring has a running surface for a ring runners, in which the generally supplied from the top of the axial direction of the thread is suspended, so that the thread is deflected and the bobbin tube is supplied during the winding substantially tangentially.
• the ring traveler is thereby moved by the thread along the tread circular around the bobbin tube.
• the ring traveler remains behind the rotational speed of the spindle and the spool sleeve arranged thereon in a rotationally fixed manner. This speed difference then leads to the winding of the thread.
• Ring spinning or twisting machine and their respective thread guide rings are
• Object of the present invention is to improve a yarn guide ring of the type mentioned.
• the object is achieved with a thread guide ring of the type mentioned in that the running surface has grooves which are arranged obliquely to a provided direction of movement of the ring traveler.
• Grooves are elongated depressions on the running surface, over which the ring traveler slides away such that in the region of the grooves a distance between the ring traveler and the thread guide ring is formed.
• “obliquely to an intended direction of movement of the ring traveler arranged grooves” are understood to mean those grooves which are aligned at least on a part of their length neither parallel to the intended direction of movement nor perpendicular to the intended direction of movement.
• threads contain lubricants which can form a natural lubricating film between the running surface of the thread guide ring and the ring traveler. This may be, for example, adhering to the fibers of the thread natural waxes, fiber abrasion and / or artificially added wetting agents and / or lubricants. Arranged obliquely to the intended direction of movement grooves on the tread favor a detachment of these lubricants from the thread, which in turn promotes the formation of a lubricating film.
• obliquely arranged grooves cause the lubricant to be transported and distributed transversely to the intended direction of movement of the ring traveler.
• the grooves on the running surface of the thread guide ring thereby form reservoirs for the lubricants, so that it is prevented that the lubricants are simply wiped away by the moving ring traveler.
• At least a portion of the grooves has a depth of at most 25 ⁇ , preferably of at most 15 ⁇ , more preferably of at most 10 ⁇ having.
• the depth describes the extent of the respective groove perpendicular to the tread.
• At least a portion of the grooves has a depth of at least 0.5 ⁇ , preferably of at least 0.7 ⁇ , more preferably of at least 1, 0 ⁇ having.
• the specified minimum values can be used to ensure that the distribution of the lubricants over the entire width of the tread, since a sufficiently large cross-sectional area of the groove can be achieved with practicable width of the groove. In addition, it can be ensured that a wiping of the lubricants is prevented.
• At least a portion of the grooves has a length of at most 3000 ⁇ , preferably at most 2000 ⁇ , more preferably of at most 1000 ⁇ having.
• the length describes the maximum extent of the respective groove in one direction.
• At least part of the grooves has a length of at least 10 ⁇ m, preferably of at least 15 ⁇ m, particularly preferably of at least 20 ⁇ m.
• the specified minimum values can be used to ensure that the distribution of the lubricants across the entire width of the tread takes place with a practicable number of grooves.
• At least part of the grooves have a width of at most 500 ⁇ m of at most 100 ⁇ , more preferably of at most 60 ⁇ having.
• the width describes the extension of the respective groove perpendicular to the length of the groove.
• At least a portion of the grooves has a width of at least 5 ⁇ , preferably of at least 10 ⁇ , more preferably of at least 15 ⁇ having.
• the specified minimum values can be used to ensure that the distribution of the lubricants over the entire width of the tread, since a sufficiently large cross-sectional area of the groove can be achieved at a practicable depth of the groove.
• At least a part of the grooves has an inclination with respect to the intended direction of movement of at least 5 °, preferably of at least 10 °, particularly preferably of at least 20 °.
• the inclination with respect to the intended direction of movement is understood to be the amount of the (smaller) angle below which the length of the groove intersects a parallel to the direction of movement. If the groove is curved and therefore the inclination changes along the groove, its inclination can be understood as the average inclination.
• the specified minimum values result in a favorable ratio between the length of the groove and the actual extent of the groove perpendicular to the direction of movement. This benefits a uniform distribution of the lubricants across the width of the tread.
• At least a part of the grooves have an inclination with respect to the intended Movement direction (BR) of at most 85 °, preferably of at least 80 °, more preferably of at least 70 °.
• BR Movement direction
• grooves of different geometry are provided.
• the geometry of a groove is understood to mean the totality of length, width, depth and inclination.
• the grooves of a first group of grooves are inclined so that they extend in the intended direction of movement from top to bottom. In this way, at least a portion of the lubricants dissolved out of the thread is caused to be transported downwards, which favors an effective distribution of the lubricants.
• the first group comprises at least first grooves with a first geometry and second grooves with a second geometry deviating therefrom.
• the grooves of the second group comprise at least first grooves with a first geometry and second grooves with a second geometry deviating therefrom.
• the thread guide ring consists of metal, wherein the grooves are formed by means of laser Honens on the tread.
• a laser beam melts the metallic surface, evaporates it partially, thus creating the desired grooves.
• the laser honing allows the formation of very fine grooves with great precision.
• the melt edges produced during laser honing are very hard and wear-resistant, which further enhances the service life of the thread guide ring.
• the tread is smoothed after laser honing by means of fine polishing.
• a particularly smooth running surface on the thread guide ring can be achieved, wherein in particular the melting areas arising during laser honing can be smoothed, which counteracts the wear of the ring traveler.
• FIG. 2 is a greatly enlarged view of a portion of a tread of the yarn guide ring of FIG. 1 in a schematic view;
• Figure 3 is a further enlarged view of a groove of the tread of the yarn guide ring of Figure 1 in a schematic
• FIG. 1 shows an embodiment of a winding device 1 a ring spinning machine with a yarn guide ring 2 according to the invention in a schematic view.
• the winding device 1 serves to wind a tapered thread F on a bobbin S.
• the bobbin sleeve S is arranged concentrically and non-rotatably on a spindle, not shown, which rotates actively driven about a vertical axis A.
• the thread guide ring 2 is also arranged concentrically.
• a ring traveler 3 is arranged so that it can move in a direction of movement provided BR circular to the winding tube S.
• the thread guide ring 2 on a tread 4, on which the ring rotor 3 can slide along.
• the running surface 4 faces the bobbin sleeve S and has a width BL.
• the supplied from the axial direction from above thread F is hooked to the ring rotor 3, so that the thread F is deflected and the bobbin S is fed substantially tangentially during winding.
• the ring traveler 3 is thereby moved by the thread F along the tread 4 circular to the bobbin S.
• the ring traveler 3 remains behind the rotational speed of the spindle and the sleeve sleeve S arranged thereon in a rotationally fixed manner.
• Figure 2 shows a greatly enlarged view of a portion of the tread 4 of the yarn guide ring 2 of Figure 1 in a schematic view.
• the running surface 4 has grooves 5, 6, 7, 8, which are arranged obliquely to the intended direction of movement BR of the ring traveler 3.
• the grooves 5, 6 of a first group of grooves 5, 6, 7, 8 inclined so that they extend in the intended direction of movement BR from top to bottom, wherein the first group first grooves 5 with a first geometry and second grooves. 6 with a deviating second geometry.
• grooves 7, 8 of a second group of grooves 5, 6, 7, 8 are inclined so that they run counter to the intended direction of movement BR from top to bottom, wherein the grooves 7, 8 of the second group at least first grooves 7 with a first geometry and second grooves 8 with a deviating second geometry comprises.
• the grooves 5, 6, 7, 8 are substantially rectilinear and partially intersect. In this case, along the entire running surface 4, some of the grooves 5, 6, 7, 8 overlap in the intended direction of movement BR. Likewise, at least some of the grooves 5, 6, 7, 8 overlap perpendicular to the intended direction of movement BR.
• the grooves 5, 6, 7, 8 are formed on the tread 4 by means of laser honing, wherein the tread 4 is smoothed after laser honing by means of fine polishing.
• the obliquely to the intended direction of movement BR arranged grooves 5, 6, 7, 8 on the tread 4 favor a detachment of lubricants from the thread F, which in turn promotes the formation of a lubricating film between the yarn guide ring 2 and the ring rotor 3.
• Lubricant transversely to the intended direction of movement BR of the ring traveler 3 over the width BL of the tread 4 are distributed.
• Lubricant transversely to the intended direction of movement BR of the ring traveler 3 over the width BL of the tread 4 are distributed.
• the thread F is mounted in the ring rotor 3 - can form over the entire width BL of the tread 4 effective lubricating film.
• the grooves 5, 6, 7, 8 on the running surface 4 of the yarn guide ring 2 thereby form reservoirs for the lubricants, so that it is prevented that the lubricants are simply wiped away by the moving ring rotor 3.
• the invention reliably prevents mixed friction or even dry friction between the thread guide ring 2 and the ring traveler 3 over a large part of the width BL of the running surface 4, without requiring the supply of external lubricant, which could contaminate the thread F. This applies in particular to finer threads F, in which naturally fewer lubricants are dissolved out. Experiments have shown that can be achieved in this way compared to conventional winders 1 without external lubricant supply means an extension of the life of the yarn guide ring 2 and the ring traveler 3 of 50% and more.
• FIG. 3 shows a further enlarged illustration of an exemplary groove 6 of the running surface 4 of the thread guide ring 2 of FIG. 1 in a schematic view and serves, in particular, to explain the geometry of the groove. 5, 6, 7, 8.
• the groove 6 has a length L which describes the maximum extent of the respective groove in one direction. Furthermore, the groove 6 has a width B which is perpendicular to the length L. Furthermore, the groove 6 has an inclination N with respect to the intended direction of movement BR, which is understood to be the amount of the (smaller) angle at which the length L of the groove 6 intersects a parallel to the direction of movement BR.
• Another size of the geometry of the groove 6 is its depth, which in FIG. 3 runs perpendicular to the plane of the drawing.
• At least a portion of the grooves 5, 6, 7, 8 shown in Figure 2 has a depth of at most 25 ⁇ , preferably of at most 15 ⁇ , more preferably of at most 10 ⁇ , and of at least 0.5 ⁇ , preferably of at least 0th , 7 ⁇ , more preferably of at least 1, 0 ⁇ on.
• At least a portion of the grooves 5, 6, 7, 8 a length L of at most 3000 ⁇ , preferably at most 2000 ⁇ , more preferably of at most 1000 ⁇ , and of at least 10 ⁇ , preferably of at least 15 ⁇ , especially preferably of at least 20 ⁇ , having.
• At least a portion of the grooves 5, 6, 7, 8 a width B of at most 500 ⁇ , preferably of at most 100 ⁇ , more preferably of at most 60 ⁇ , and of at least 5 ⁇ , preferably of at least 10 ⁇ , more preferably of at least 15 ⁇ , having.
• At least a part of the grooves 5, 6, 7, 8 has an inclination N with respect to the provided direction of movement BR of at least 5 °, preferably of at least 10 °, particularly preferably of at least 20 °, and of at most 85 °, preferably of at least 80 °, more preferably of at least 70 °.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Spinning Or Twisting Of Yarns (AREA)
• Bearings For Parts Moving Linearly (AREA)
• Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=46796603

Family Applications (1)

Country Status (5)

Families Citing this family (5)

Citations (3)

Family Cites Families (16)

• 2011
  • 2011-09-16 DE DE102011053661A patent/DE102011053661A1/de not_active Withdrawn
• 2012
  • 2012-09-04 CN CN201280044182.1A patent/CN103857836B/zh not_active Expired - Fee Related
  • 2012-09-04 JP JP2014530150A patent/JP2014526618A/ja active Pending
  • 2012-09-04 EP EP12753990.6A patent/EP2756120B1/de not_active Not-in-force
  • 2012-09-04 WO PCT/EP2012/067155 patent/WO2013037660A1/de active Application Filing

Patent Citations (3)

Also Published As

Similar Documents

Legal Events