EP0464036B1 - Procede et dispositif de traitement de monofilaments - Google Patents

Procede et dispositif de traitement de monofilaments Download PDF

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Publication number
EP0464036B1
EP0464036B1 EP90903770A EP90903770A EP0464036B1 EP 0464036 B1 EP0464036 B1 EP 0464036B1 EP 90903770 A EP90903770 A EP 90903770A EP 90903770 A EP90903770 A EP 90903770A EP 0464036 B1 EP0464036 B1 EP 0464036B1
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EP
European Patent Office
Prior art keywords
air
monofilaments
flow
air duct
modules
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
Application number
EP90903770A
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German (de)
English (en)
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EP0464036A1 (fr
Inventor
Heinz Reinbold
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/10—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by hot air or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/029—Multicellular type furnaces constructed with add-on modules
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/04—Circulating atmospheres by mechanical means

Definitions

  • the invention is based on a method for orienting the thread-like macromolecules of monofilaments in a group with air of a certain temperature.
  • the invention relates to an air duct for treating monofilaments for the stretching, thermofisting process or the like, in particular for carrying out the method according to claim 1, with an air circulation system and a working duct through which the monofilaments pass, which is formed from a lower part and an upper part is that is movable with a fixed arrangement of the lower part.
  • Such air ducts are usually 1,000 mm wide and up to 5,000 mm long and are used for the thermal treatment of monofilaments. They are made in two parts and the monofilaments pass through the air duct between the two halves of the device.
  • the air speed deviations over the width and length of the air duct should be negligibly small.
  • the known air duct which is operated with hot air, has the disadvantage that it requires long temperature compensation distances in order to warm up the large apparatus masses evenly. This creates a long lead time when starting the known air duct.
  • the hot air is guided in two device halves that can be swiveled towards one another and whose air-guiding channels are connected to one another. The connection is made using bellows or specially designed stuffing boxes. This constructive solution is complex and prone to failure.
  • the injection nozzles draw cold air into the known air duct. This affects the surface temperature profile.
  • the temperature profile is also subject to increased fluctuations in the area where warm air is extracted from the air duct and on the side surfaces. These temperature changes have a quality-reducing effect on the monofilaments running there and thus impair the uniformity of the material properties of the monofilament sheet.
  • transverse accumulation ribs generate transverse turbulences in the known air duct, which counteract a uniform air velocity over the width and length of the known air duct.
  • the numerous throttle valves that are required in the known air duct so that the air quantities can be distributed approximately evenly.
  • the invention is therefore based on the object of developing an air duct of the type mentioned in such a way that, with high-precision temperature control, there is a uniform, identical load on the individual monofilament in the family.
  • the air duct is formed from units of any number, each having an upper part and a lower part, an air heater or an air cooler and an air circulation device and can be coupled tightly together on the end faces of the units, the air circulation device in the air Cross flow through the working channel.
  • the air duct according to the invention thus has the essential advantage that the temperature profile in the working duct is subject to smaller fluctuations over its entire width and length than can be achieved by known air ducts at all.
  • an air cushion is built up at the inlet and at the outlet opening of a monofilament share, which closes the free cross section of the working duct from cold air flows from the surroundings.
  • the temperature profile can also be stabilized in the edge area by this measure.
  • the air duct according to the invention can be put together from units of any size, the size can the horizontal area of the working channel can be kept so small that it can be operated with an exact, fluctuation-free temperature profile over the length and width of the working channel.
  • Each unit has an air heater or an air cooler and an air recirculation device, so that depending on the performance of a production system, only one unit has to be coupled more or less to the existing air duct.
  • the temperature profile is independent of length.
  • the air duct according to the invention therefore does not have to be designed for specific process engineering applications, but can be used universally, as required by the market conditions. Monofilaments, which should and must meet the highest demands with regard to their desired diameter and physical data, can be produced more easily with the air duct according to the invention and a possible production scrap due to temperature fluctuations in the working duct can be excluded.
  • the individual units can be operated at different temperatures, so that sections in an air duct can be selected for heating, tempering or drying the monofilaments as required.
  • a further structural change of the monofilaments can be achieved by cooling after stretching.
  • the upper parts of the air duct can be pivoted and / or displaced together or individually in relation to the lower part.
  • the working channel preferably has a cross-sectional area which is delimited at the top and bottom by flow grids.
  • the working channel is also limited on all sides. Up and down from the flow grids that protect the working channel. In the event of a thread break, the monofilament falls onto the lower flow grille and is held there.
  • the working channel is delimited vertically to the running direction of the monofilaments by air cushions of the cross-flow and the side walls of a structural unit close the working channel tightly to the side.
  • the structural units have side walls which consist of one-piece or multi-piece insulation plates and can be fastened to a frame of the structural unit.
  • the structural unit can be assembled inexpensively and quickly even from simple prefabricated elements.
  • the elements are also interchangeable.
  • the necessary insulation of the structural unit so that undesired heat radiation does not occur can be selected, for example by attaching insulation panels of different thicknesses to the frame.
  • the structural units have a fresh air duct and an exhaust air duct, which connect one or both air flow spaces to the surroundings.
  • the air duct according to the invention can also be used as a convection dryer or convection fan.
  • the moisture loading of the air in the unit as well as the throughput of the air flow can be controlled as desired.
  • the H2O-laden air can be dehumidified by means of known devices which are connected to the structural unit either via the fresh air duct or the exhaust air duct.
  • the upper part and the lower part are firmly connected to one another and form a structural unit which has a working channel which is provided along an side wall with an opening which can be tightly covered with a strip by means of manually operated or automatic closing means.
  • the air duct according to the invention thus meets all of the expanded requirements that are placed on the manufacture of monofilaments of the highest precision.
  • the performance of the air duct can be expanded as required, is user-friendly and maintenance-friendly and can maintain a specified temperature field in a self-regulating manner.
  • Individual components of the air duct can be used both for heating and for cooling the monofilaments.
  • the structural units can also be held together on longitudinal beams and the side opening of the working channel can be closed by means of several individually designed flaps.
  • 1 is an air duct as it is composed of individual units 2.
  • a first unit 2 ', a second unit 2 ⁇ and a third unit 2 ′′′ are firmly coupled to each other, while a fourth unit 2 IV is shown spaced apart from the units 2', 2 ⁇ , 2 ′′′ for the sake of clarity.
  • the structural units 2 have a frame 3 in which a working channel 4 is cut out.
  • monofilaments 5 are arranged in a group. The monofilaments 5 are distributed over the entire width of the working channel 4. The monofilament is transported in the direction of the arrow.
  • the individual structural units 2 are composed of a side wall 6, a bottom wall 7, a top wall 8 and a side wall 9 which cannot be seen in the figure.
  • the walls are attached to the frame 3. Every unit 2 is provided with an inlet wall 10 and an outlet wall 11 which delimit the air duct 1 both at the beginning and at the end but also between the individual structural units 2. Insulation plates that prevent heat radiation in the respective direction can be attached or attached to the inlet wall 10 and to the outlet wall 11 at the beginning or at the end.
  • Each assembly 2 is composed of a lower part 12 and an upper part 13.
  • the upper part 13 can be pivoted and / or shifted relative to the lower part 12 in a spatially fixed arrangement.
  • flow grids 14, 15 are displaceably guided, which limit the working channel 4 of the structural unit 2 both upwards and downwards.
  • On the horizontal surfaces of the flow grids 14, 15 to the monofilaments 5 slot plates 14 ', 15' and diametrically to this sieves 14 ⁇ , 15 zu are arranged (see Fig. 5).
  • the flow grids 14, 15 support the slotted perforated plates 14 ', 15' and the sieves 14 ⁇ , 15 ⁇ on the one hand and, on the other hand, distribute and guide the air flowing into the working channel 4.
  • the flow grids 14, 15 can be removed from the assembly 2 via a flap 16 in the side wall 6.
  • the fastening strips 17, 18, 19 engage in corresponding recesses in the adjacent structural unit 2 ′′′ and are to be firmly connected to one another via elongated holes through which the screws reach.
  • the individual units 2 are to be adjusted to one another by means of adjusting screws 21 in such a way that the working duct 4 of the air duct 1 forms a plane that is aligned horizontally.
  • two rollers 22 are attached to the assembly 2 as an example.
  • the representation in FIG. 1 conceals one of the rollers 22 on the structural unit 2.
  • FIG. 2 shows the operating principle of the air duct 1 according to the invention in a highly schematic manner.
  • An air flow 25 can be guided in antiparallel arrow directions 26, 26 '.
  • the air flow 25 is heated by an air heater 27.
  • the air heater 27 can be replaced by an air cooler.
  • each assembly 2 has a flow zone 29 to which the monofilaments 5 are exposed.
  • Fig. 3 shows the air duct 1 in a spatial representation with the essential internals.
  • the outlet wall 11 is removed on the structural unit 2.
  • On frame 3 are the outside Fixed walls and insulation mats on the inside, which are covered by air duct surfaces, preferably thin sheets.
  • the air flow 25 runs in the illustrated case in the direction of arrow 30, that is, the air is pressed from below through the flow grille 15, which can be equipped with the sieve 15 ⁇ and the slotted perforated plate 15 'in the working channel 4 and leaves via the flow grille 14 Working channel 4.
  • the running direction of the monofilament 5 is indicated by an arrow drawn with broken lines.
  • the screens 14 ⁇ , 15 ⁇ and the slotted perforated sheets 14 ', 15' are not shown in the figure on the flow grille 14, 15
  • flow baffles 33 are arranged such that they form circular openings 34, 34 'at the upper and lower ends of the air flow space 32 together with the flow body 31.
  • the air flow space 32 forms the flow zone 29.
  • the circular openings 34, 34' preferably in the form of a truncated cone, the circular area of which with the larger diameter merges into a rectangular area , which corresponds to the area of the flow grids 14, 15.
  • the air is circulated in the air flow spaces 32, 32 'by the air circulation device 28 sucks the air through the air heater 27 or an air cooler (not shown) and presses it from below through the opening 34 into the working channel 4.
  • the air is distributed evenly over the surface of the flow grille 15.
  • temperature sensors 35 In the air flow spaces 32, 32 ', temperature sensors 35, humidity sensors 36, pressure sensors, air flow measuring points and air speed measuring points are provided.
  • the temperature sensors 35 and the humidity sensors 36 at the lower and upper ends of the air flow space 32 are shown as examples in FIG. 3.
  • the air heater 27 is encased on both sides at a distance from the top and from below by filter mats 38.
  • the filter mats 38 hold back low-molecular particles, which are circulating in the air flow 25, in the filter mats 38 and ensure that no dirt particles can enter the air heater 27.
  • the air heater 27, like the filter mats 38, is installed in the unit 2 in such a way that it can be quickly and individually removed from the unit 2 so that, for example, the air heater 27 can be replaced by an air cooler.
  • the flow grids 14, 15 can be exchanged, which are held in guide rails in the assembly 2.
  • Fig. 4 shows the assembly 2 in a side view.
  • the monofilaments 5 are guided through the structural unit 2 in the direction of the arrow.
  • the flow guide plates 33 adjoin the inlet wall 10 and the outlet wall 11 from the inside.
  • the air flow space 32 extends between the flow guide plates 33 and the flow body 31.
  • the internal insulation of the structural unit 2 is shown in the figure at 39. If several components 2 are strung together to form an air duct 1, the internal insulation in the area of the inlet wall 10 and the outlet wall 11 can be omitted.
  • the air circulation device 28 is installed in the lower part 12.
  • the flap 16 is still partially shown, which covers the flow grids 14, 15 tightly from the side in the case of the assembly 2.
  • the air heater 27 is shown in dashed lines in the figure.
  • Fig. 5 shows a top view of the flow grille 14 and in the cutout parts of the slotted perforated plate 14 'and the sieve 14 ⁇ .
  • the top view corresponds to the flow grid 15, not shown.
  • the flow grid 14 has the only partially represented channels 40, which are arranged close to one another and have, for example, a circular opening. With the sieve 14 ⁇ , a dynamic pressure is generated in the air flow space 32. The dynamic pressure is so great that the air is evenly distributed on the surface of the sieve 14 ⁇ .
  • FIG. 5a shows a top view of a partial section of the flow grid 14 on an enlarged scale.
  • the channels 40 taper to a circular area, the diameter of which is smaller than the diameter of the circular opening on the surface of the flow grille 14.
  • the circular openings of the surface are covered on one side by the sieve 14 ⁇ and on the other side by the perforated plate 14 ' .
  • Fig. 6 shows the flow grille 14 in the front view of FIG. 5 with the slotted perforated plate 14 'and the sieve 14 ⁇ .
  • a profile strip 41 extends along one side and cooperates with the flap 16 in the installed state of the flow grille 14.
  • the flap 16 lies with the inside on the profile strip 41 on.
  • the profile strip 41 can be made of an insulation material and, in addition to the flap 16, have a sealing strip which is arranged between the profile strip 41 and the flap 16 when the flap 16 is closed and is slightly deformed by the contact pressure of the flap 16.
  • FIG. 6a shows the individual channels 40 enlarged in part and shown spatially.
  • Excerpts of the slotted perforated plate 14 'and the sieve 14 ⁇ limit the channels 40.
  • the channels 40 shown here as examples are two truncated cones which abut one another with their smaller opening diameters.
  • FIG. 7 shows another possible representation of the possible structure of a flow grid 14, 15.
  • FIG. 8 shows a further exemplary embodiment of an air duct according to the invention, which in the figure is composed, for example, of two structural units 45.
  • the structural units 45 the upper part and the lower part are firmly connected to one another.
  • a working channel 46 is formed between the upper and lower part.
  • the monofilaments 5 are transported in the working channel 46 in the direction of the arrow.
  • the working channel 46 is open facing a side wall 47 of the respective structural unit 45. It has an opening 48.
  • the opening 48 can be covered with a strip 49.
  • the strip 49 can be moved down by means of manually operated or automatic devices. It is thus possible that the strip 49 only partially or completely clears the opening 48.
  • the strip 49 extends over both structural units 45, so that when the strip 49 is displaced, the opening 48 of both structural units 45 becomes free at the same time.
  • a guide rail 50 is provided on the bar 49 is at the top to the outside directed edge.
  • the guide rail 50 is made of a poorly heat-conductive material and is preferably curved in cross section. The monofilament bundle can be guided along the guide rail 50 when threading.
  • the strip 49 is located on the side walls 47 of the structural units 45 in a position in which the openings 48 are partially free.
  • the side walls 47 also have an operating panel and monitoring display field 51, which is not identified in any more detail and which, for example, is provided on the assembly 45 to accommodate display devices, switching and control buttons.
  • the structural units 45 are guided on a longitudinal beam 53 and fastened to it.
  • the longitudinal members 53 are partially drawn with dashed lines in the figure to indicate that, depending on the length of the longitudinal members 53, further structural units 45 can also be coupled to the existing structural units 45.
  • An outlet wall 54 which prevents heat radiation as an insulation wall, can be fastened to the outside of the structural unit 45, which closes off the air duct.
  • the outlet wall 54 is removed, the further structural units 45 are added, and the outlet wall 54 is plugged on to the last structural unit, i.e. to the outside through which the monofilaments 5 emerge into the environment.
  • FIG. 9 shows a section of a bar 49 on an enlarged scale as it abuts the profile bars 41 of the flow grids 14, 15.
  • the profile strips 41 can, as shown in the figure, also have sealing strips 55 which are easily deformed by the contact pressure of the strip 49 and thus seal the working channel 46 tightly from the side wall 47.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Duct Arrangements (AREA)

Abstract

Un procédé permet d'orienter les macromolécules filamenteuses de monofilaments dans un ensemble de monofilaments au moyen d'air à une température donnée. A cet effet, les monofilaments sont traités dans un nombre voulu de zones individuelles d'écoulement agencées en rangées qui s'étendent perpendiculairement au sens d'avancement des monofilaments. L'invention assure une sollicitation uniforme et identique des monofilaments individuels de l'ensemble avec un réglage extrêmement précis de la température.

Claims (10)

  1. Procédé pour orienter les macromolécules en forme de fils de monofilaments (5) en un assemblage avec de l'air de température déterminée, caractérisé en ce que les monofilaments (5) sont traités par différentes zones d'écoulement (29) alignées côte à côte en nombre quelconque, qui s'étendent perpendiculairement au sens des monofilaments (5).
  2. Procédé selon la revendication 1, caractérisé en ce que de l'air chauffé ou refroidi est transporté dans les différentes zones d'écoulement (29) et en ce que l'écoulement de l'air se fait perpendiculairement au plan formé par l'assemblage des monofilaments (5).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'air refroidi est déshumidifié avant l'entrée dans la zone d'écoulement (29).
  4. Canal d'air pour le traitement de monofilaments pour le procédé d'étirage, de thermofixage ou analogue, en particulier pour la mise en oeuvre du procédé selon la revendication 1, avec un système de circulation d'air et un canal de travail (4) traversé par les monofilaments (5), qui est formé par une partie inférieure (12) et une partie supérieure (13) qui est mobile lorsque l'agencement de la partie inférieure (12) est stabilisé, caractérisé en ce que le canal d'air (1) est formé par des unités modulaires (2) en nombre quelconque qui comportent chacune une partie supérieure (13) et une partie inférieure (12), un réchauffeur d'air (27) ou un refroidisseur d'air et un appareil de circulation d'air (28) et peuvent être couplées étroitement côte à côte par l'intermédiaire de côtés frontaux des unités modulaires (2), l'appareil de circulation d'air (28) conduisant l'air à courant croisé dans le canal de travail (4).
  5. Canal d'air selon la revendication 4, caractérisé en ce que le refroidisseur d'air est couplé à un dispositif qui déshumidifie l'air refroidi en deçà de la charge de H₂O maximale.
  6. Canal d'air selon la revendication 4, caractérisé en ce que les parties supérieures (13) du canal d'air (1) peuvent pivoter et/ou se déplacer ensemble ou individuellement par rapport à la partie inférieure (12).
  7. Canal d'air selon l'une des revendications 4 à 6, caractérisé en ce que le canal de travail (4) comporte une surface transversale qui est limitée vers le haut et vers le bas par des grilles d'écoulement (14, 15).
  8. Canal d'air selon l'une des revendications 4 à 7, caractérisé en ce que les unités modulaires (2) comportent des parois latérales (6, 9) qui consistent en des plaques d'isolation en un ou plusieurs éléments et peuvent être fixées à un cadre (3) de l'unité modulaire (2).
  9. Canal d'air selon l'une des revendications 4 à 8, caractérisé en ce que les unités modulaires (2) comportent un canal d'air frais et un canal d'air usé qui font communiquer avec l'environnement une ou deux chambres d'écoulement d'air (32, 32′).
  10. Canal d'air selon l'une des revendications 4 à 9, caractérisé en ce que la partie supérieure (13) et la partie inférieure (12) sont reliées de manière fixe l'une à l'autre et forment une unité modulaire (45) qui comporte un canal de travail (46) qui est muni le long d'une paroi latérale (47) d'une couverture (48) qui peut être recouverte de manière étanche par une barre (49) par l'intermédiaire de dispositifs de fermeture actionnés manuellement ou automatiques.
EP90903770A 1989-03-21 1990-03-03 Procede et dispositif de traitement de monofilaments Expired - Lifetime EP0464036B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3909175A DE3909175C3 (de) 1989-03-21 1989-03-21 Vorrichtung zur Behandlung von Monofilen
DE3909175 1989-03-21
PCT/DE1990/000158 WO1990011482A1 (fr) 1989-03-21 1990-03-03 Procede et dispositif de traitement de monofilaments

Publications (2)

Publication Number Publication Date
EP0464036A1 EP0464036A1 (fr) 1992-01-08
EP0464036B1 true EP0464036B1 (fr) 1994-10-12

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EP90903770A Expired - Lifetime EP0464036B1 (fr) 1989-03-21 1990-03-03 Procede et dispositif de traitement de monofilaments

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Country Link
US (1) US5227175A (fr)
EP (1) EP0464036B1 (fr)
DE (2) DE8915647U1 (fr)
WO (1) WO1990011482A1 (fr)

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CN106052382B (zh) * 2016-06-20 2018-08-21 北京机电研究所有限公司 铝合金控制臂高精度加热炉
CN108301089A (zh) * 2018-04-07 2018-07-20 郭柏权 加弹机电热单元及加弹机加热箱
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DE3909175C3 (de) 1995-08-31
DE3909175C2 (fr) 1991-07-25
DE3909175A1 (de) 1990-09-27
WO1990011482A1 (fr) 1990-10-04
DE8915647U1 (fr) 1990-12-13
EP0464036A1 (fr) 1992-01-08
US5227175A (en) 1993-07-13

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