Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H13/00—Other common constructional features, details or accessories
  • D01H13/30—Moistening, sizing, oiling, waxing, colouring, or drying yarns or the like as incidental measures during spinning or twisting
  • D01H13/302—Moistening, e.g. for wet spinning

Definitions

• the invention relates to a preparation thread guide with a slideway for the yarn and a feed nozzle for the preparation, which opens into the slideway, and a method for loading a yarn with preparation by means of a preparation thread guide, which has a slideway for the yarn and a feed nozzle for the preparation, which opens into the slideway.
• a preparation thread guide of the type mentioned at the outset is described, for example, in DE-U-74 42 133.
• the state of the art states that the yarn is repeatedly damaged at the mouth of the nozzle.
• the slideway is convexly curved, the opening of the feed nozzle being arranged in the slideway above the point of contact of the yarn with the slideway.
• the convex guidance of the slideway should also serve to remove excess preparation from the yarn path.
• REPLACEMENT SHEET REGEL2C
• the object of the present invention is to provide a further preparation thread guide of the type mentioned at the outset, which is suitable for the preparation of yarns, even at high yarn speeds. It is also an object of the present invention to provide a method for loading a yarn with a preparation of the type mentioned at the outset, which is also suitable when using high yarn speeds.
• the object of the invention is achieved in a preparation thread guide with a slideway for the yarn and a feed nozzle for the preparation, which opens into the slideway, in that the preparation thread guide has an infeed path for the yarn leading to the yarn run, which opens into the slideway, and that the outlet opening of the feed nozzle is arranged in the region of the transition from the inlet path to the slideway.
• the infeed path is preferably convexly curved and opens tangentially into the slideway.
• the slideway of the preparation thread guide according to the invention is preferably formed by a groove which has a flat groove base. Spraying off of preparation is hereby largely avoided.
• the preparation thread guide according to the invention is distinguished in particular by the fact that the outlet opening of the feed nozzle is at a distance from the transition into the slideway which is at most so large that the transition into the slideway from the preparation with free exit, that is to say without a thread, is wetted.
• the transition (from the feed path) to the slideway can be determined by the fact that at this point the tangent to the feed path and the running direction of the slideway coincide. If these conditions are observed, it can surprisingly be observed that the yarn is significantly less, often not at all, damaged by the outlet opening of the feed nozzle.
• the cross section of the feed nozzle can have practically any geometric shape, for example also a circular shape. Damage to the yarn can be reduced even further if the outlet opening of the feed nozzle has an oval cross section and a width which is the same or slightly smaller than the width of the groove base of the slideway and is arranged centrally with respect to the width of the groove base of the slideway.
• An oval cross section is understood to mean all cross sections whose cross section has a shorter and a longer axis. As a rule, these oval cross sections are symmetrical to these two axes. Typical oval cross sections have the shape of an ellipse. An oval cross section is also achieved in that the corners are rounded in the case of a rectangular cross section.
• the preparation thread guide according to the invention is particularly well suited if the difference between the width of the groove base of the slideway minus the width of the outlet opening of the feed nozzle is at most as large as the distance which corresponds to the wetting length that occurred when the preparation emerged into the slideway.
• the convex curvature of the run-in path is a circular arc section.
• the outlet opening of the feed nozzle is at a distance of at most 2 mm, preferably at most 1 mm, from the transition into the slideway. It is also favorable if the difference between the width of the groove base of the slideway minus the width of the outlet opening of the feed nozzle is at most 1 mm, preferably at most 0.5 mm.
• the length of the flat groove base of the slideway advantageously has a length of at least 2 mm. Examples of favorable lengths are 5 to 6 mm.
• a preparation thread guide of the type according to the invention has a particularly gentle effect if lateral walls are provided in the area of the infeed path which are convexly curved, the distance between them becoming smaller in the thread running direction. This applies all the more if the distance between the side walls of the inlet track and / or the distance between the side walls of the slideway become larger.
• the bottom of the groove and thus the slideway preferably have a constant width.
• the preparation thread guide according to the invention is particularly characterized in that it is designed as a plug at the rear end facing away from the slideway, by means of which the preparation thread guide can be connected to a holder
• the plug-in fastener between the preparation thread guide and the holder includes the plug-in connecting devices known as quick-release fasteners, but which can be detached with a simple handle.
• the rear end of the preparation thread guide is cylindrical, preferably circular cylindrical.
• a seal that radially encompasses this end can then easily be placed over the rear end of such a preparation thread guide, which seal can be pressed with appropriate means.
• Such a plug connection between the preparation thread guide and the holder makes use of the sealing techniques known in stuffing box packings.
• the means for pressing the seal are preferably designed such that the preparation thread guide is positioned over them.
• a sealing ring known as an 0-ring is preferably used. It is advantageous here that the holder has means which keep the O-ring at a distance from the rear end of the preparation thread guide.
• a particularly favorable type of connection between the preparation thread guide and holder can be seen in the fact that the rear end of the preparation thread guide is circular-cylindrical, that the holder has a circular-cylindrical bore, that in the circular-cylindrical bore one spacer ring, one O-ring and another spacer ring is inserted, and that after inserting the rear end of the preparation nozzle into the spacer rings and the O-ring via a flange that can be screwed to the holder, the O-ring is pressed over the two spacer rings such that the O-ring is not only axially on the circular cylindrical trained part of the preparation thread guide but is also pressed onto the inner surface of the circular cylindrical bore of the holder.
• the O-ring receives this pressure
• ERSA ⁇ ZBL ⁇ T (RULE 26) a strongly elliptical cross section. At least one of the two spacer rings preferably serves to position the preparation thread guide. This can be brought about by appropriate dimensioning of the inner and outer diameter of the spacer ring, the inner diameter of the bore, the holder and the outer diameter of the rear end of the preparation thread guide.
• the object of the invention is also achieved by a method for loading a yarn with a preparation by means of a preparation thread guide which has a slide for the yarn and a feed nozzle for the preparation which opens into the slide, which is characterized in that the Yarn is fed to the preparation thread guide in the area where the preparation opens into the slideway.
• the method according to the invention is particularly successful if a preparation thread guide is selected for each yarn, the slideway width of which is at least as large as the width of the yarn, in which all the fila ente of the yarn are placed next to one another.
• the method according to the invention is used to prepare freshly spun yarns which have not yet been wound up, it is advantageous if the freshly spun yarn is first fed to the preparation thread guide and then to a thread guide and the distance L s between the preparation thread guide and thread guide is determined
• B N is the groove width of the groove base of the slideway of the
• Preparation thread guide, B is the width of the yarn bundle in the area of the spinneret, each measured in mm.
• the preparation thread guide according to the invention can be used in all processing stages of multifilament yarns, in particular in melt spinning, but also in further processing. It is suitable for all yarns such as plain yarns, textured yarns, continuous yarns, spun fiber yarns, textile or technical yarns. All known preparations such as finish emulsions, antistatic agents, flushing oils, but also dyes in liquid or pasty form are suitable as preparations.
• Figure 1 shows a preparation thread guide according to the invention in cross section
• FIG. 2 shows the preparation thread guide according to FIG. 1 in a side view
• Figure 3 shows the preparation thread guide according to Figure 1 in plan view
• Figure 4 shows another preparation guide in plan view
• ERS ⁇ TZBL ⁇ T (RULE 26) 6 shows a preparation thread guide inserted into a holder in longitudinal section
• FIG. 7 section AA of the preparation thread guide inserted into a holder according to FIG. 6.
• the slideway is denoted by 1 and the infeed path by 2.
• the side walls 4 form a groove with the groove base 1 or with the inlet track 2. Their distance to the outside increases and they run towards each other in the area of the inlet path in the direction of the feed nozzle 3.
• the dashed line F indicates the thread path.
• the preparation is fed to the slideway 1 via the feed nozzle 3.
• the feed nozzle 3 has an oval cross section.
• FIG. 1 shows a preparation thread guide which is arranged perpendicular to the thread run
• FIG. 5 shows a preparation thread guide which forms an angle of 45 ° with the thread run direction.
• FIG. 4 shows a further preparation guide in plan view, in which the outlet cross section of the feed nozzle 5 is circular.
• a preparation thread guide 10 the rear end of which is circular-cylindrical, is inserted into a holder 11.
• the holder has a circular cylindrical bore, in which a spacer sleeve 13, an O-ring 14 and a further spacer sleeve 15 are inserted.
• the spacer sleeve 15 is pressed against the O-ring 14, the O-ring 14 against the spacer ring 13 and the spacer ring 13 against the bottom of the cylindrical bore of the holder 11 via the flange 16 and the screws 22 (FIG. 7), as a result of which a detachable via the O-ring 14
• SUBSTITUTE SHEET (RULE 26) Seal between preparation thread guide 10 and holder 11 is reached.
• the spacer ring 13 also ensures an exact adjustment of the preparation thread guide.
• the holder 11 is inserted into a further holder 12, in which holder 12 the holder 11 is axially displaceable and is held in the desired position by means of screw 19.
• the holder 11 can also be used in another housing.
• the preparation is fed to the preparation thread guide via the channel 17 arranged in the holder 11, the channel 17 having a thread 18 at the free outlet, via which a preparation supply line (not shown) can be screwed on.
• the holder 12 has a collecting channel 20 for dripping preparation, which is discharged via the channel 23.
• a thread 21 is provided for connecting a discharge line.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
• Preliminary Treatment Of Fibers (AREA)
• Spinning Or Twisting Of Yarns (AREA)
• Treatment Of Fiber Materials (AREA)

Applications Claiming Priority (5)

Publications (1)

Family

ID=25939215

Family Applications (1)

Country Status (4)

Family Cites Families (3)

• 1995
  • 1995-08-01 TW TW84107978A patent/TW297064B/zh active
  • 1995-08-10 EP EP95929098A patent/EP0776388A1/de not_active Withdrawn
  • 1995-08-10 WO PCT/EP1995/003165 patent/WO1996005343A1/de not_active Application Discontinuation
  • 1995-08-10 JP JP8507010A patent/JPH10504356A/ja active Pending

Non-Patent Citations (1)

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