US3701268A - Air heating box for textile machines - Google Patents

Air heating box for textile machines Download PDF

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Publication number
US3701268A
US3701268A US162082A US3701268DA US3701268A US 3701268 A US3701268 A US 3701268A US 162082 A US162082 A US 162082A US 3701268D A US3701268D A US 3701268DA US 3701268 A US3701268 A US 3701268A
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Prior art keywords
box
thread
heating box
air heating
threads
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US162082A
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English (en)
Inventor
Heinz Treptow
Benno Frank
Heinz Schippers
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Oerlikon Barmag AG
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Barmag Barmer Maschinenfabrik AG
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Priority claimed from DE19702034610 external-priority patent/DE2034610A1/de
Priority claimed from DE19712102956 external-priority patent/DE2102956A1/de
Application filed by Barmag Barmer Maschinenfabrik AG filed Critical Barmag Barmer Maschinenfabrik AG
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/224—Selection or control of the temperature during stretching

Definitions

  • This invention generally relates to an air heating box for the heat treatment of a plurality of yarns or threads which usually move in approximately vertical direction as they are transported by conventional textile machines, especially in texturizing, stretching, stretchspooling, stretch-twisting or stretch-texturizing machines.
  • synthetic, thermoplastic polymer filaments, threads or yarns to achieve a continuous heat treatment thereof, e.g. for stretching, twisting or texturizing purposes, the same treatment being simultaneously applied to a large number of threads as they are rapidly transported in the textile machine.
  • One known air heating box has in its interior a large number of U-shaped, electrically heated tubes or rods arranged perpendicularly and transversely to the longitudinal direction of the heating box, additional heating tubes or rods being provided in the region of the heating box base. Between each pair of the threads 1 running from top to bottom once through the rectangular or block-shaped heating box and the heating tubes or rods allocated to these threads, there is arranged a substantially U-shaped sheet metal screen as a functional element.
  • the air within the box has the desired temperature only at a certain distance from the base of the box.
  • the temperature gradually increases toward the upper zones or areas of the heating box and may then fall off again over part of the box height, especially toward the outer cover or top lid.
  • One object of the present invention is to provide an air heating box for use in combination with textile machinery for the continuous transport and heat treatment of threads, whereby uniform quality can be imparted to a large number of threads as well as a consistent and equal quality in each individual thread.
  • Another object of the invention is to construct such an air heating box so as to provide an equal air temperature over the length and width of the box and also a more nearly uniform air temperature over the height of the box.
  • Yet another object of the invention is to provide an air heating box wherein individual transported threads can be readily loaded at any time without disturbing other thread treatment positions in the same box and with only a very minimal disturbance of the uniform temperature pattern within the box.
  • Another object is to provide an economically constructed and maintained air heating box with easily installed base heating elements along or in combination with other heating means including plate heaters or similar contact heating members.
  • the air heating box with openings in the bottom and usually with a gas or vapor outlet in the top thereof, preferably is constructed with its longitudinal side walls extending in a vertically upward converging or tapering relationship so as to promote a horizontal mixing or diffusion of heated air as well as a normal vertically urged flow of air by heat convection.
  • the thread loading and deflecting means at each thread position essentially includes a supporting rod member-slidable in a slotted guide tube and a thread guide member or deflecting element such as a pin, roller or the like connected near the inner end of the supporting rod and extending outwardly therefrom into the adjacent path of the transported thread, i.e. as the thread is guided back and forth within said box from the entry slot around the guide or deflecting means and then back out of the box through the exit slot.
  • FIG. 1 is a vertical sectional view of a preferred embodiment of a horizontally elongated air heating box constructed in accordance with the invention, certain elements being shown in elevation or in partly sectional or schematic form;
  • FIG. 2 is a section taken along the line 2-2 of FIG. 1 to generally illustrate the bottom zone of the heating box, a large central portion thereof being omitted;
  • FIG. 3 is a plan view of a plate or sheet metal base member adapted to be fastened along the bottom of the heating box to provide thread slots and other reception openings for two thread positions along one side of the box in its longitudinal direction;
  • FIG. 4 is a fragmented perspective view of a preferred adjustable rod means for loading and guiding and individual thread in the air heating box.
  • FIG. 5 is a partial vertical sectional view of another preferred embodiment of a horizontally elongated heating box provided with heated contact plates as additional heating means for the treatment of threads transported in and out of the box by conventional textile machinery.
  • the overall heating box 1 as a substantially enclosed and insulated casing or housing extending horizontally over a large number of textile machine positions is constructed in a conventional manner of an inner wall or casing 2 and an outer wall or casing 3 with a heat-insulating material 4 enclosed therebetween.
  • These inner and outer walls 2 and 3 are preferably made of sheet metal, e.g. a lightweight metal sheeting such as aluminum or the like.
  • sheet metal walls can also be offset or crimped as well as being provided with structural supports and/or connecting members to give it sufficient rigidity and strength.
  • the entire box can be supported on any suitable framework as indicated, usually by a central elongated framework la along the top of a textile machine with thread transporting means such as feed rolls or the like carried 'on either side of this central framework in positions located more or less vertically below the corresponding heat treating positions in the box 1.
  • the thread can be supplied from a textile machine located above the heating box so that the embodiment shown must be slightly modified to supply each thread position of the box from above rather than from below. Such modifications will be readily appreciated in terms of only minor changes in the arrangement and construction of individual elements.
  • Heating elements 5, preferably in the form of two or more tubes or rods 6 and 7 as electrical resistance heating means, are essentially arranged in accordance with the invention along the bottom or base area of the heating box 1.
  • the heating device in its simplest form can consist of two continuous heating elements 6 and 7 extending over the entire length of the box and across the width of each heating section in the form of a loop near the periphery of each longitudinal heating section. The ends of these loops can be connected at a centrally mounted junction box 8 located within or outside of the heating box and supplied with electrical current in a conventional manner from an external source.
  • suitable thread slots and other openings which are described more fully below but which may also serve as inlet means for fresh air.
  • other openings in the bottom of the box 1 can also be provided for the intake of air, particularly if the thread entry and exit slots and supporting members enter from the top of the box 1.
  • the base installed heating device is essentially devoted to the heating of fresh air entering the bottom zone of the box 1, for example from an ambient room temperature of about 30C. up to the desired air temperature within the heating box of approximately 230C. as but one example.
  • This heating device 5 can also serve to maintain the desired temperature within the box 1 by replacing heat absorbed by the threads or heat lost through expelled gases or vapors and/or by heat conduction gradually through the insulated walls.
  • the heat-insulation material 4 contributes substantially to the efiiciency of the device in terms of such heat loss, but the relatively low height of the heating box 1 is also a very significant factor.
  • the box can still have its preferred shape in the sense of upwardly converging longitudinal sides, e.g. so as to provide a vertical transverse cross-section of the box interior which has a substantially trapezoidal shape.
  • the arrangement of the heating device 5 in the bottom zone of the heating box 1 leads to the result that the air entering at the bottom of the box immediately reaches its desired temperature and, by reason of convection over the relatively short distance from bottom to top of the box, tends to bring theentire region lying above the base to this same temperature, without it being necessary to install additional heating elements above the base.
  • a preferred embodiment-of the air heating box according to the invention is also characterized by an interior horizontal cross-section which essentially diminishes upwardly in vertical direction.
  • an interior horizontal cross-section which essentially diminishes upwardly in vertical direction.
  • the cross-sectional tapering is best carried out in such a way that the vertical cross-section has a trapezoidal shape perpendicularly to the longitudinal mid-plane or bisecting vertical plane along the longitudinal and horizontal axis of the box.
  • the trapezoid is preferably an isoceles trapezoid, i.e. as represented by the longitudinal side walls providing spaced treating positions in each half of the heating box separated by the midplane.
  • a further preferred embodiment of the air heating box is characterized by the heating device consisting of a plurality of heating elements extending over the entire length of the heating box. If one of these heating elements should drop out or fail to function, then the heat output of the intact heating elements can be adjusted individual heating elements illustrated, they means of a central temperature sensor or thermostat in such a manner that the desired temperature is maintained. In addition to the single set of individual heating elements illuatrated, they can also run horizontally next to one another or over one another in the bottom portion of the box. Frequently it is expedient to unit the heating elements into a single element encompassing the entire heating box length and width, i.e. as with the looped elements illustrated. ln all cases, these base heating elements are maintained free of contact with the running threads.
  • the invention includes an especially preferred embodiment of the loading and deflecting means 10 in the form of adjustable rods 12 which can be inserted into or extracted from the heating box 1 while being guided or held slidably in a relatively close-fitting guide tube 11 which preferably has a square cross-section as shown most clearly in FIG. 4.
  • This guide tube 11 is preferably detachably fastened at its upper or inner end by inserting it into a sleeve or socket member 13 fixed on the upper cover or top side of the box, e.g. using any suitable means to anchor the guide tube in this socket so that it can subsequently be detached and withdrawn if necessary for periodic cleaning or maintenance.
  • the guide tube 1 l is preferably held firmly in place by a collar or releasable locking clip 14, the tube 11 then extending or projecting downwardly from the box 1 for a distance of preferably in the range of about one-third of its total length.
  • the heating box still preferably retains its trapezoidal shape with longitudinal side walls tapering or converging in an upward direction, it is expedient to displace the adjustable rod means 10 alternately on each side of the box at offset longitudinal positions, i.e. alternately parallel first to one side wall and then the other side wall. This avoids any interference when withdrawing rods simultaneously from both sides of the box in adjacent positions or approximately opposing positions. Also, minor variations are obviously required as to the placement or arrangement of other elements to avoid any possible interference with the function of the loading and deflecting rod means.
  • Each guide tube 11 which fits into the square opening 15(FlGS. 2 and 3) has a longitudinal slot lla along one edge thereof as shown in detail in FIG. 4.
  • a supporting bracket or cantilever arm member connected rigidly to the upper or inner end of the rod 12 so as to carry at an extended position a suitable thread guide or deflecting member such as the small roller or pin 16b (this deflecting or guide means being indicated at 16 in FIG. 1 wherein the slot 11a is not illustrated).
  • the thread 9 travels upwardly to this guide or deflecting pin 16 in the rising path 17 and then returns therefrom in the descending path 18.
  • each thread treatment position along the length of the heating box and on either side thereof takes place essentially as follows.
  • the rod 12 is drawn out by its handle 19 after first releasing the safety catch 20 which fits into an opening or recessed arresting hole 20a in the side of the guide tube 11.
  • This safety catch is spring urged on a pivot within handle 12 as indicated so that it automatically locks this rod when shifted or shoved into its fully inserted position in the slotted guide tube 11.
  • the guide or deflecting element 16 protruding or connected through slot 1 la is also lowered beneath the bottom of the box through suitable openings so that it is readily accessible for thread loading.
  • the bracket or arm 16a carrying the guide pin or roll 16!; is advantageously fastened at the inner or free end of adjusting rod 12 so as to run approximately parallel to the longitudinal axis of the heating box 1 as can be generally perceived from the arrangement of parts including their corresponding openings or slots in the bottom of the heating box, all as shown in FIGS. 1-3.
  • the thread guide element 16 is moved up and down with the guided thread remaining in a substantially vertical plane transverse to the longitudinal axis of the heating box.
  • the slight inclination of the guide tubes 11 for slidably inserting and withdrawing the rods 12 has the further advantage that the rods can be fully withdrawn without running-into or interfering with thread run-off spools or winding bobbins or the like (not shown) which are usually mounted directly below the heating box 1 on the textile machine frame 1a as further indicated by the inwardly directed path 18 of the downwardly directed threads leaving the heating box.
  • thread run-off spools or winding bobbins or the like which are usually mounted directly below the heating box 1 on the textile machine frame 1a as further indicated by the inwardly directed path 18 of the downwardly directed threads leaving the heating box.
  • threads enter and exit at the top of the heating box with reference to feed and/or winding spools on an upper machine frame.
  • the rods 12 preferably travel parallel to the longitudinal shanks or sides of the trapezoidal box.
  • the most ideal construction of the heating box 1 to accommodate this preferred inclined adjustment of the thread guide and loading rods 12 is one in which the wall or side of the box containing the thread entry and exit slots consists essentially of two halves or separate longitudinal bottom wall members abutting on a longitudinal central plane or vertical midsection of the box and extending obliquely therefrom out to join at a right angle with the longitudinal side walls extending parallel to the longitudinal axis of the box.
  • the guide tubes 11 with adjustable rods 12 can then be easily arranged perpendicularly to each half of the bottom wall in positions adjacent their respective thread entry and exit'slots.
  • Still another advantageous feature of the invention is to provide a heat-insulating or protection tube 21 as shown in FIGS. 1 and 4 which rests freely slidable on the bottom end of the guide tube 11 and is preferably perforated to increase its cooling or protective effect.
  • this additional protective tube 21 is seated on a stop 12a which travels a short distance into the exposed slot 11a of guide tube 11.
  • the heat protection tube 21 likewise slides freely downward until its inwardly protruding upper flange or lip 22 comes to rest on the stop members 23 at the lower end of the guide tube 11. (See FIG. 1 for these stop members 23 which are enclosed at the lower end of perforated tube 21 in the closed position of the rod means 9 in FIG. 4.)
  • This telescopic arrangement of the outer heat-protection tube 21 encloses the outer extension of the interfitting slotted guide tube 11 and the adjusting rod 12 when both the guide tube and its rod are in the fully inserted position, i.e. over approximately one-third'the length of the rod and guide tube assembly.
  • the heat-protection tube 21 slides outwardly over the guide tube 11 so as to always enclose at least that portion of the withdrawn rod 12 projecting immediately adjacent the external fixed end of the guide tube 11.
  • the tube and rod telescopic assembly extends axially on the outside of the heating box 1 such that the first third of its length is represented by the exposed guide tube 11 down to stop 23, the second third of its length corresponds to the middle third of rod 12 surrounded by the heat-protection tube 21 while the last third of its length is the exposed end portion of the rod 12.
  • the outer perforated tube 21 effectively shields precisely that portion of rod 12 which is normally contained in the lower part of box 1 and is therefore at an elevated temperature and quite hot after first being withdrawn. in order to enclose all of the upper two-thirds of the withdrawn rod 12, i.e. in-
  • the air heating box of FIG. 1 as well as that of the embodiment shown in FIG. 5, has the profile of an isosceles trapezoid in a vertical section transverse to the horizontal longitudinal axis of the box, the smaller base side being on top and the larger base side of the trapezoid representing the bottom of the box.
  • a bottom consisting of detachable wall plates or longitudinal segments 24 which can be fastened to extend approximately perpendicular to the respective longitudinal side walls 25 on either side of the longitudinal midsection of the box.
  • Suitable. inlet pipes or conduits 26 can further be provided, e.g. in side walls 25, for the introduction of steam into the air heating box 1. This improves the heat transition to the threads, especially where a strongheat-tixing effect is desired as in the treatment of torque-crimped threads or yarns.
  • the trough or gutter formed by the obliquely positioned bottom walls 24 of the box 1 can be provided with one or more discharge outlets 27 for the collection and withdrawal of a liquid condensate, for example steam condensate and/or the condensate formed by finishing agents or the like.
  • the discharge pipe or pipes 27 can be directed away from the textile machine by any suitable connecting line or collecting vessel (not shown).
  • vapors or gases arising from finishing agents or the like emerge at the top or cover of box 1 and can be drawn off through a number of outlet apertures 27, for example into a corresponding number of apertures or openings in a suction tube 270 which extends longitudinally over the top of the box 1, preferably on an independent support means 27b without being directly connected to the box so as to provide a slight air gap 28 between the separately supported tube and the cover of the box.
  • the thread loading and deflecting adjustable rod assemblies 10 are arranged in rows along each of the upwardly converging side walls 25 along the inner wall surface at a distance sufficient to clear the looped heating elements 6 and 7.
  • the individual slidable rods 12 in guide tubes 11 are introduced into the box through the square openings 15 spaced at regular intervals in rows parallel with the longitudinal axis of the box.
  • the square cross-section of openings 15 and guide tubes 11 is selected so that the guide tube will not turn or twist about its longitudinal axis. Any cross-section other than a circular one is generally suitable or else other means must be provided to prevent the undesired twisting.
  • FIG. 3 illustrates in detail one plate or segment 24 on one longitudinal side of the heating box 1 and shows the manner in which the threading and guiding elements are received through the bottom of the box 1 in relation to suitably positioned thread entry and exit slots.
  • an elongated opening or slot 29 extends longitudinally from one of the square tube-receiving openings 15 in a direction substantially parallel to the longitudinal axis of the box, this longitudinal slot being adapted to permit the passage of the bracket or arm 16a of the thread guide means through the bottom of the box.
  • the approximately square shaped opening 30 is adapted to receive the thread guide or deflecting element 16b at a relatively short longitudinal interval from the opening 15.
  • the square opening 30 is turned so that one diagonal is parallel to the longitudinal direction of the heating box 1 and falls on the longitudinal centerline of slot opening 29.
  • the other diagonal of the square opening 30 leads into a transverse elongated slot which extends from the two transversely disposed corners of opening 30 to provide a thread entry slot 31 and a thread exit slot 32 for the reception of the thread courses or paths 17 and 18,.
  • These thread entry and exit slots which are arranged on a common centerline perpendicular to the centerline of slot 29 corresponding to the axis of guide member 16b, should be relatively narrow so as to provide suitable thread guides.
  • the slots are preferably lined along at least the outer ends thereof with an abrasion-resistant and wear-proof material 33, e.g. very hard surfaced metal coatings or ceramic linings or the like. Since such surfaces are also quite smooth, they prevent inadvertent or undesirable thread damage, e.g. even when the thread is traveling as it is loaded or guided through these entry and exit slots into or within the air heating box.
  • the elongated opening 29 can continue on as a connecting slot 3 3 from the opposite corner of square opening 3d up to the next adjacent tube-receiving opening 15 which is then associated with another set of openings (29', 30') identical to those first described, including the next set of adjacent transverse thread entry and exit slots (31', 32).
  • the individual plate or sheet metal segment 24 shown in FIG. 3 preferably contains only two up to about four longitudinally spaced thread loading and guiding positions on each side of the midsection of the heating box.
  • Such plates 24 can be in the form of individual panels which are preferably adapted to be inserted in recesses in the outer wall 3 of the bottom of the box 1 and attached to this outer wall or supporting struts thereon or the like by means of bolts or other fastening means through the-bores 36 and 37.
  • Similar openings in the bottom inner wall 2 can be directly provided so as to correspond in approximate shape and location to those of the outer wall 3.
  • the thread receiving slots 31,32 and 31',32, etc. are preferably made larger in the inner wall 2 so that only those slots in the outer wall 3 serve as thread guides.
  • bottom panels 24 in the form of double-walled units with preloaded insulation such that an individual panel extends substantially over its half of the bottom of box 1 or only over an outer portion thereof as indicated by the dotted longitudinal lines 38 in FIG. 2.
  • panels or walls can also be hinged or otherwise removably held along inner edge 38 by means of a hinge or holding member 39 along supporting brace 40 of the machine frame 1a (FIG. 1). This permits very easy access to the interior of the box for cleaning purposes or for maintenance, e.g. in replacing heating rods or guide tubes.
  • the air heating box 41 of FIG. 5 is generally similar to that shown in FIG. 1 in the sense that it is elongated in a horizontal direction and has an inner sheet metal wall 42 and outer wall 43 with suitable insulating material 44 therebetween.
  • this embodiment of FIG. 5 further includes contact heating plate means 47 and 48 arranged to be placed in direct running contact with the transported thread 49 as it goes upwardly and/or downwardly again out of the box.
  • the heating box 41 also preferably has an approximately trapezoidal shape with upwardly converging longitudinal side walls so as to achieve the desired heating effect from this shape.
  • the thread loading and deflecting means 50 can be constructed as in the previous embodiment for vertical thread loading but is shown more simply in the present instance as the adjusting rod 51 with a deflecting roller 52 at its upper end and slidably adjusted in the bracket holder 53 by means of rod handle 54.
  • the rod 51 is pulled out until roller 52 is beneath the bottom outer wall 42 for easy application of the thread to roller 52 and reinsertion of the rod 51.
  • each individual thread 49 is provided on its entry side as well as on its exit side with the contact plates 47 and 48 which have convex contacting surfaces 55 and 56, respectively, an are composed of a good heat-conducting material such as any conventional heatable metallic materials preferably with a relatively abrasion-resistant outer convex contacting surface. It is usually desirable to provide for each thread or for a single thread pair only one contact plate 47 or 48, i.e. so that these contact plates have a width of the thread contacting surface in the longitudinal direction of the box which is quite narrow and sufiicient only to accommodate minor fluctuations in the running course or path of the individually heated thread.
  • Both heating plates 47 and 48 have approximately the same construction, but contact plate 47 is free of any other devices so as to be heated solely by the air or gases in the box while contact plate 48 contains a thermocouple 57 and an electrical resistance heating element 58. This permits an additional carefully controlled heating of the thread 49 just before it exits from the heating box, e.g. so that the thread'is very quickly adjusted to a final fixing temperature.
  • thermocouple 57 Such internally heated plates, i.e. so as to carefully'adjust the temperature indicated by thermocouple 57 over current supply wires 59 to the internal electrical resistance heating element 58.
  • temperature control means are not otherwise illustrated since they are usually mounted externally of the machine for adjusting the temperature of a large number of thread treating units.
  • a ventilation or exhaust opening 66 can be provided in the upper cover or top of the heating box, preferably directly above the guide element 52, to withdraw the vapors of finishing agents and to gradually withdraw air therewith.
  • the thread entry and exit slots 69 as well as the openings for adjusting rod assembly can be partly or almost completely blocked off during operation to adjust air flow into the bottom of the box.
  • access to the interior of the box 41 can be advantageously provided by removable side panels or doors 67 extending over at least a portion of the length of the box.
  • Such panels or doors are removably fastened by the bolts 68 but otherwise provide the double-walled and insulated construction of the remainder of the box.
  • Access for cleaning purposes is generally necessary from time to time because, on the one hand, thread particles such as fluff, lint or dust collects in the heating box and, on the other hand, vapors of textile finishing agents which are usually oily preparation tend to precipitate or condense on the contact plates to form a solid brownish rust thereon which must be periodically removed.
  • worn contact plates or differently designed plates can be changed.
  • these carrierpartitions 60 and 61 are preferably mounted at only one fixed or stationary point, for example at the top ends thereof by the mounting brackets 62 and 63, respectively, using any suitable bolt or screw fastening means. Such a fixed point is preferably in the middle of the narrow partition 60 or 61.
  • the outermost partition 60 is of course arranged at a spaced interval from the facing inner side wall 42 of the box, and partition 61 is further spaced inwardly at an appropriate distance.
  • the carrier partitions 60 and 61 are merely guided or loosely held in the slotted or grooved holders 64 and 65, respectively, which in turn are connected rigidly in any suitable manner to the bottom of the heating box 41.
  • the carriers 60 and 61 are given substantial freedom at their bottom end for heat expansion play.
  • Such means for allowing play to accommodate the effects of heat expansion serve to avoid excessive strain or dislocation of these carriers and the contact heating plates 47 and 48 which are attached thereto and supported thereby with con ventional fastening means such as bolts, screws, pegs,
  • the effective contact surface between the running thread and one or both heated convex plates can remain relatively small, the effective contact sur face of these plates with the surrounding air is very great, especially with the cooperation of the additional surface areas presented by the carrier partitions. This assures that the plates remain at approximately the mean or average air temperature in the box, this air temperature in turn being balanced or equalized by the heating plates. The thread is then brought to this same temperature before leaving the air heating box.
  • the overall height of the air heating box can be path reduced and a single traversing apth of the thread over the relatively short distance between the top and bottom of the box is sufficient under normal operating conditions to provide an efiective heat treatment of a wide variety of textile threads, filaments, yarns and the like.
  • all of the advantages of rapid threading or loading of individual thread treatment positions are achieved without disturbing the uniform and highly equalized or balanced temperature maintained in the air heating box.
  • heating means located in a lower base area of said box
  • thread loading and deflecting rod means adjustably insertable through wall openings adjacent said thread entry and exit slots.
  • An air heating box as claimed in claim 1 elongated in the horizontal direction and having an interior horizontal cross-section which reduces in an upward vertical direction.
  • adjustable rod means include for each individual thread a slotted tubular guide means fastened to said box and extending between the top and bottom thereof to slidably receive a supporting rod having a thread guide means extending outwardly therefrom and connected near the inner end of the rod to provide a deflection surface around which the entering thread is returned to an exit slot in the entry wall.
  • each said adjustable rod means extends outside of the thread entry and exit wall of the box to provide a slotted guide tube and supporting rod assembly arranged telescopically with an outer heat-protection tube enclosing the outer extension of both said guide tube and rod of said assembly in its fully inserted position said heat-protection tube being adapted to slide outwardly over said guide tube together with the withdrawal of said rod to enclose at least a portion of the withdrawn rod projecting adjacent the external fixed end of said guide tube.
  • An air heating box as claimed in claim 9 including safety catch means locking the telescoping supporting rod, guide tube and heat-protection tube in place in the fully inserted position of said supporting rod.
  • An air heating box as claimed in claim 1 wherein said wall containing said thread entry and exit slots is composed of two halves abutting on a longitudinal central plane and extending obliquely therefrom to receive individual threads on either side of said central plane, each half of said wall forming a right angle with the adjoining side wall extending parallel to the longitudinal axis of the box, and wherein. said rod means are arranged perpendicularly to each half of said wall adjacent respective thread entry and exit slots.
  • An air heating box as claimed in claim 11 elongated in the horizontal direction and having side walls tapering upwardly in the vertical direction to provide an interior heated space which is gradually reduced in volume from the bottom toward the top of the box.
  • An air heating box as claimed in claim 16 containing means for introducing steam into the interior of the box.
  • An air heating box as claimed in claim 17 having means to discharge liquid condensate from the bottom of the box.
  • thermocouple for regulation of the heat supplied to said threads.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
US162082A 1970-07-13 1971-07-13 Air heating box for textile machines Expired - Lifetime US3701268A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702034610 DE2034610A1 (en) 1970-07-13 1970-07-13 Synthetic fibre rovings heater box - for contactless heating of rovings prior to stretching or crimping
DE19712102956 DE2102956A1 (en) 1971-01-22 1971-01-22 Air heating box - for heating thermoplastic filaments providing uniform temp distribution

Publications (1)

Publication Number Publication Date
US3701268A true US3701268A (en) 1972-10-31

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Application Number Title Priority Date Filing Date
US162082A Expired - Lifetime US3701268A (en) 1970-07-13 1971-07-13 Air heating box for textile machines

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US (1) US3701268A (de)
CA (1) CA945353A (de)
CH (1) CH523355A (de)
FR (1) FR2101601A5 (de)
GB (1) GB1299337A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027466A (en) * 1975-06-17 1977-06-07 Heberlein Maschinenfabrik Ag Process for continuously treating thermoplastic yarns
US4244692A (en) * 1978-07-24 1981-01-13 Dixie Yarns, Inc. Process for manufacturing flame-retardant yarn
US4669159A (en) * 1983-08-06 1987-06-02 Karl Mayer Textilmaschinenfabrik Gmbh Arrangement for the stretching and warping of warp threads
US5193334A (en) * 1989-12-01 1993-03-16 Barmag Ag Yarn false twist crimping apparatus and method of threading same
US5349729A (en) * 1993-08-02 1994-09-27 Milliken Research Corporation Method to control drawing of a plurality of synthetic yarns
US20110256494A1 (en) * 2010-04-16 2011-10-20 Lydia Hannelore Braun Wax Melting Device
EP2549002A1 (de) * 2011-07-20 2013-01-23 Oerlikon Textile GmbH & Co. KG Garnbehandlungskammer
CN114635214A (zh) * 2022-03-08 2022-06-17 福建欣美针纺有限公司 一种加弹机网络供气系统

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TW419540B (en) * 1993-08-09 2001-01-21 Teijin Seiki Co Ltd Method of yarn stretching and twisting and its device
DE102019003801A1 (de) * 2019-05-28 2020-12-03 Oerlikon Textile Gmbh & Co. Kg Heizvorrichtung zum Erwärmen eines laufenden Fadens
CN120222180A (zh) * 2025-05-16 2025-06-27 浙江海瑞电气有限公司 一种环保柜

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US3318114A (en) * 1964-08-14 1967-05-09 Pottsville Bleaching And Dyein Method and apparatus for setting the color of dyed tubular fabrics

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Cited By (12)

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Publication number Priority date Publication date Assignee Title
US4027466A (en) * 1975-06-17 1977-06-07 Heberlein Maschinenfabrik Ag Process for continuously treating thermoplastic yarns
US4244692A (en) * 1978-07-24 1981-01-13 Dixie Yarns, Inc. Process for manufacturing flame-retardant yarn
US4669159A (en) * 1983-08-06 1987-06-02 Karl Mayer Textilmaschinenfabrik Gmbh Arrangement for the stretching and warping of warp threads
US5193334A (en) * 1989-12-01 1993-03-16 Barmag Ag Yarn false twist crimping apparatus and method of threading same
US5349729A (en) * 1993-08-02 1994-09-27 Milliken Research Corporation Method to control drawing of a plurality of synthetic yarns
US20110256494A1 (en) * 2010-04-16 2011-10-20 Lydia Hannelore Braun Wax Melting Device
EP2549002A1 (de) * 2011-07-20 2013-01-23 Oerlikon Textile GmbH & Co. KG Garnbehandlungskammer
CN102888730A (zh) * 2011-07-20 2013-01-23 欧瑞康纺织有限及两合公司 纱线处理室
US20130186152A1 (en) * 2011-07-20 2013-07-25 Oerlikon Textile Gmbh & Co. Kg. Yarn treatment chamber
US9109307B2 (en) * 2011-07-20 2015-08-18 Saurer Germany Gmbh & Co. Kg Yarn treatment chamber
CN102888730B (zh) * 2011-07-20 2016-04-13 索若德国两合股份有限公司 纱线处理室
CN114635214A (zh) * 2022-03-08 2022-06-17 福建欣美针纺有限公司 一种加弹机网络供气系统

Also Published As

Publication number Publication date
CA945353A (en) 1974-04-16
CH523355A (de) 1972-05-31
GB1299337A (en) 1972-12-13
FR2101601A5 (de) 1972-03-31

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