EP0582091A1 - Verfahren und Vorrichtung zur Wärmebehandlung von schlauchförmigem, elastisch dehnbarem Material - Google Patents

Verfahren und Vorrichtung zur Wärmebehandlung von schlauchförmigem, elastisch dehnbarem Material Download PDF

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Publication number
EP0582091A1
EP0582091A1 EP93110650A EP93110650A EP0582091A1 EP 0582091 A1 EP0582091 A1 EP 0582091A1 EP 93110650 A EP93110650 A EP 93110650A EP 93110650 A EP93110650 A EP 93110650A EP 0582091 A1 EP0582091 A1 EP 0582091A1
Authority
EP
European Patent Office
Prior art keywords
legs
drive
tights
smoothing
brackets
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.)
Withdrawn
Application number
EP93110650A
Other languages
German (de)
English (en)
French (fr)
Inventor
Werner Müller
Franz Hildebrandt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
August Krempel Soehne GmbH and Co KG
Original Assignee
August Krempel Soehne GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by August Krempel Soehne GmbH and Co KG filed Critical August Krempel Soehne GmbH and Co KG
Publication of EP0582091A1 publication Critical patent/EP0582091A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C5/00—Shaping or stretching of tubular fabrics upon cores or internal frames
    • D06C5/005—Shaping or stretching of tubular fabrics upon cores or internal frames of articles, e.g. stockings
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics
    • D06C7/02—Setting

Definitions

  • the invention relates to a method for the heat treatment of tubular, elastically stretchable material, in particular for drying and / or smoothing stockings, tights and the like, in which the material is stretched over at least two adjacent legs of an elongated shape and then for drying and / or Smoothing is subjected to heat.
  • the invention further relates to a device for the heat treatment of tubular, elastically stretchable material, in particular for drying and / or smoothing stockings, tights or the like, with at least one elongated shape which has at least two adjacent legs on which the material can be clamped, and with a heater for heating the material.
  • a device according to the type mentioned is known from DE 35 42 210 A1.
  • the invention has for its object to provide a method and an apparatus for the heat treatment of tubular, elastically stretchable material, whereby the disadvantages of the prior art are avoided, in particular the occurrence of stripes at the support points of the material on the mold is prevented.
  • this object is achieved in that, in a method of the type mentioned at the outset, the legs are rotated about their longitudinal axis during the application of heat.
  • tubular material it is also possible to use the method for the heat treatment of endless tubular material, if this is desired.
  • a tubular material it would be conceivable, for example, that the tubular material is clamped on a plurality of adjacent longitudinal struts, for example on three or four adjacent, parallel longitudinal struts, which are continuously rotated.
  • the method has particular advantages in particular in the heat treatment of women's stockings, women's tights, socks and the like, since the strips mentioned above can occur particularly with such material because of the particularly thin and sensitive plastic fabric.
  • tubular material with at least one closed end, in particular stockings, socks, tights and the like, the direction of the rotational movement is expediently reversed alternately in a development of the invention.
  • the amplitude of the rotational movement is at least half as large as the circumference of a leg.
  • the wrap angle of the fabric at the support points on the two legs is approximately 180 ° in each case. If the amplitude of the rotational movement according to the proposals of the invention is now chosen to be at least half the size of the circumference of a leg, it is ensured that the material is regularly moved out of the contact area of the legs at all points and can thus easily relax, and that this also results in a uniform temperature distribution at all points of the material.
  • the object of the invention is further achieved in that in a device of the type mentioned the adjacent legs are rotatably mounted about their longitudinal axis and are connected to a drive device via which the legs can be driven to rotate about their longitudinal axis.
  • a rotatable mounting of the legs about their longitudinal axis can e.g. can be achieved in that a tube is placed on each leg, which rests on the rigid leg by means of a clearance fit. If low-noise and low-friction storage is desired, the tube can also be mounted on the leg, for example with the help of plain bearings or roller bearings.
  • a device which is connected to the drive device, so that the direction of rotation can be alternately reversed.
  • This measure has the advantage that, in particular, stockings, tights, socks and the like can be processed essentially without wrinkling and without locally increased tensions.
  • an adjusting device for adjusting the amplitude and / or the frequency of the alternating rotational movement is additionally provided.
  • This measure has the advantage that the rotational movement is optimally geared to the shape and type, as well as to the properties of the material to be processed. Because the wrap angle when using a mold with two adjacent legs is approximately 180 °, for example the amplitude can be set such that the material is completely lifted from the leg at all points of contact with the legs during each back and forth movement. In some cases, however, a lower amplitude is sufficient to achieve the desired effect. In addition, the frequency of the alternating rotational movement can also be set in such a way that the slowest possible back and forth movement is sufficient to achieve the desired effect.
  • each elongated shape is designed as an essentially U-shaped bow, the two legs of which are connected to one another via a curved end piece.
  • the two legs can be arranged parallel to each other or have a certain inclination to each other.
  • the outer diameter of the legs expediently corresponds approximately to the outer diameter of the curved end pieces.
  • the legs are driven by a chain drive, a belt drive and / or a friction gear.
  • a plurality of two essentially U-shaped brackets are provided on a turntable, to which a plurality of heat treatment stations is assigned, against which the brackets can be moved in cycles, the drive device for jointly driving the legs of the Bracket is formed.
  • Such an arrangement for shaping and smoothing stockings, socks, tights and the like can be arranged in a particularly space-saving manner on a turntable.
  • the individual heat treatment stations can be arranged on a turntable, but also pull-up, control and pull-off stations, insofar as this is necessary.
  • the brackets can be moved in cycles with respect to the heat treatment stations by rotating the turntable.
  • the legs of the bracket can be driven by a single common drive device, so that there is a simple construction.
  • the drive device can be adjusted between a drive position in which the legs of the brackets are driven and a rest position in which the legs are not driven in order to enable rotation of the turntable.
  • the drive device can be coupled to the legs in order to set them in rotation or uncoupled from the legs so that the turntable can be rotated in order to transport the material clamped on the brackets to the next station.
  • a device according to the invention is generally designated by the number 10 in FIG. 1.
  • An essentially U-shaped bracket 12 is attached with its two upper ends 20 to two brackets 22 arranged parallel to one another, which can be fastened to a machine frame in a manner not shown.
  • Each bracket 12 has two mutually parallel legs 14, which are each connected at their lower end via a semicircularly curved end piece 16 made of a bent tube.
  • each leg 14 On each leg 14 is a piece of pipe 18, which extends almost over the entire length of the leg, by means of plain bearings, e.g. rotatably supported with PTFE rings.
  • the outer diameter of the tubes 18 is matched to the outer diameter of the curved end pieces 16 and the upper ends 20, so that there is a bracket 12 with a smooth surface and a uniform diameter.
  • brackets 12 Since two such brackets 12 are arranged side by side in parallel, this arrangement is suitable for tensioning a pair of tights 24, as is indicated by the dashed lines.
  • a chain drive is provided for driving the tubes about their longitudinal axis, which is designated overall by the number 26.
  • a drive pinion 28 is provided on the output shaft of a drive device 34.
  • a chain 32 is guided via the drive pinion 28 and via a pinion 30 on a tube 18, so that all four tubes 18 can be driven in rotation about their longitudinal axis via the chain drive 26.
  • the drive device 34 further comprises a device by means of which the direction of rotation of the drive pinion 28 can be alternately reversed, which is indicated by the number 35 and is designed as an electronic circuit by which the drive device 34 can be controlled, as indicated by the arrow 38.
  • this device 35 can also comprise an adjusting device, by means of which the amplitude and the frequency of the alternating oscillation movement can be adjusted.
  • a heating device 36 is arranged below the chain drive 26, which extends downward and projects downward over the curved ends 16 of the brackets 12.
  • the heating device 36 which is only indicated schematically, has infrared heating elements which can optionally be additionally supported by a blower.
  • the heating device 36 is expediently designed as a closed heating chamber, for which purpose, for example, a reflector can be arranged on the side opposite the heating elements.
  • Heat treatment of stockings, tights and the like now takes place in the following way: First, the material, for example tights 24, is stretched onto the two adjacent brackets 12 by hand or by means of a suitable mounting device. The tubes 18 are then set in an alternating rotational movement rotating about their longitudinal axis, for which purpose the drive device 34 is switched on and the amplitude and frequency of the movement as a function of the material and the heat treatment temperature, which for ladies tights is approximately in the range between 105 and 125 ° C. , be preset.
  • the amplitude of the rotational movement is preferably chosen so that the amplitude corresponds to approximately half the circumference of a respective tube 18. A significantly larger amplitude is not desirable since this could lead to more wrinkling in the transition area between the legs of the tights.
  • the heating device 36 can now be switched on, as a result of which the tights are heated in a matter of seconds and the necessary relaxation and smoothing of the tissue is achieved. The occurrence of stripes in the contact area of the tights 24 on the legs 14 is reliably avoided.
  • FIG. 2 A slightly modified embodiment of the device is shown in Fig. 2.
  • the device designated overall by the number 40 is part of a molding machine for molding stockings, socks, tights and the like, the individual stations of which are arranged on a turntable 68.
  • the turntable 68 serves to transport the tights stretched on pairs of straps between the individual stations.
  • Fig. 2 only three heating stations 86, 88, 90 are shown, which are arranged side by side on the edge of the turntable 68 and each opposite two adjacent U-shaped brackets 42, 42 ', 42' '.
  • the remaining stations of the molding machine e.g. a pull-up and control station and a pull-off station are not part of the invention and are not shown for the sake of clarity.
  • Heating devices are provided for heating the stirrups, which are indicated by the numbers 66, 66 ', 66' '.
  • the U-shaped brackets 42, 42 ', 42'' are constructed according to FIG. 1 and have tube pieces which extend essentially over the entire length of the legs 44, 44', 44 '' and at their lower ends in each case the way described above are connected to each other via curved end pieces.
  • Each bracket 42, 42 ', 42'' is assigned a heating device 66, 66', 66 '', which is preferably arranged within a closed heating chamber (not shown).
  • the main difference to the arrangement according to FIG. 1 is the drive of the legs, which is not carried out via a chain drive, but via belt drives in connection with a friction gear.
  • the brackets are movable together with the turntable 68, so that they are conveyed from station to station when the turntable is rotated in cycles.
  • the drive device for the stirrups is designed to be stationary and is fastened to a vertical support 70 provided in the center of the rotary plate 68 by means of a horizontal support 72.
  • a first lifting cylinder 74 is provided on the horizontal support 72, which is combined with a guide and via which a longitudinal support 80 can be extended in a controlled manner towards the edge of the turntable.
  • a friction wheel 62 ' is rotatably mounted.
  • a cross member 78 is also fixed on the longitudinal member 80 and extends on both sides outward from the longitudinal member 80 toward the edge of the turntable 68.
  • a friction wheel 62 or 62 ′′ is arranged at each end of the cross member.
  • the cross member 78 is interrupted by a second lifting cylinder 76, which is combined with a guide. By means of the lifting cylinder 76, both ends of the cross member 78 can be extended in a controlled manner from the longitudinal member 80 in the direction toward the edge of the turntable in a manner not shown, as indicated by the arrow 84.
  • an isosceles triangle is formed by the longitudinal beam 80 and the cross beam 78, at the corners of which a friction wheel 62, 62 ', 62''is arranged.
  • the middle friction wheel 62 ' which is arranged at the outer end of the longitudinal beam 80, by moving the longitudinal beam 80 in the direction of the arrow 82 can be moved outwards in the radial direction according to arrow 82 to the two middle brackets 42 ', the two other friction wheels 62 and 62''are also outward in the direction of the two first brackets 42 or the two remaining brackets 42 '' movable, i.e. in a direction perpendicular to arrow 82.
  • the three friction wheels 62, 62 ', 62' ' are driven by a belt drive 56.
  • a drive unit 64 is provided at one end of the cross member 78, via which the friction wheel 62 'is driven directly.
  • the two remaining friction wheels 62, 62 ′′ are driven by a belt 57 guided over the friction wheels 62, 62 ′, 62 ′′.
  • each bracket is each connected via a belt drive 58 or 58' or 58 ''.
  • the two adjacent legs are each connected to two adjacent brackets by a further belt drive 60, 60 ', 60' '.
  • This middle belt drive 60 or 60 'or 60' 'connecting two adjacent brackets can be driven by the friction wheel 62 or 62' or 62 ''.
  • the central belt drives 60, 60 ', 60' 'and the additional belt drives 58, 58', each connecting two legs of a bracket can be driven via the belt drive 56 and its friction wheels 62, 62 ', 62' '. 58 '' each individual leg of the six brackets can be driven simultaneously.
  • the drive unit 64 in turn comprises a device for reversing the direction of rotation and an adjusting device for adjusting the amplitude and frequency of the rotational movement of the legs.
  • the belt drive 56 is first moved from the working position shown in FIG. 2 to a rest position, for which purpose the friction wheels 62, 62 ', 62' 'are moved inwards with the aid of the lifting cylinders 74, 76 be moved so that the bracket is released and the turntable can be rotated.
  • the remaining mode of operation of the device corresponds entirely to the embodiment previously described with reference to FIG. 1.
  • any other drive devices can be used to generate the rotational movement of the legs.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP93110650A 1992-07-10 1993-07-03 Verfahren und Vorrichtung zur Wärmebehandlung von schlauchförmigem, elastisch dehnbarem Material Withdrawn EP0582091A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4222667 1992-07-10
DE4222667A DE4222667C1 (enrdf_load_stackoverflow) 1992-07-10 1992-07-10

Publications (1)

Publication Number Publication Date
EP0582091A1 true EP0582091A1 (de) 1994-02-09

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EP93110650A Withdrawn EP0582091A1 (de) 1992-07-10 1993-07-03 Verfahren und Vorrichtung zur Wärmebehandlung von schlauchförmigem, elastisch dehnbarem Material

Country Status (3)

Country Link
EP (1) EP0582091A1 (enrdf_load_stackoverflow)
CA (1) CA2100220A1 (enrdf_load_stackoverflow)
DE (1) DE4222667C1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1293129B1 (it) * 1997-06-23 1999-02-11 Matec Srl Apparecchiatura e metodo per il posizionamento di manufatti tessili

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3542210A1 (de) * 1985-11-29 1987-06-04 Kunert Werke Vorrichtung zum behandeln, insbesondere formen und faerben von gestrickten oder gewirkten beinbekleidungsstuecken, wie struempfen, strumpfhosen, socken etc. aus hochelastischem material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3542210A1 (de) * 1985-11-29 1987-06-04 Kunert Werke Vorrichtung zum behandeln, insbesondere formen und faerben von gestrickten oder gewirkten beinbekleidungsstuecken, wie struempfen, strumpfhosen, socken etc. aus hochelastischem material

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Publication number Publication date
DE4222667C1 (enrdf_load_stackoverflow) 1993-09-09
CA2100220A1 (en) 1994-01-11

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