EP0575821B1 - Vorrichtung zum Aufspannen von schlauchförmigem Material mit einem geschlossenen Ende auf einer Form - Google Patents

Vorrichtung zum Aufspannen von schlauchförmigem Material mit einem geschlossenen Ende auf einer Form Download PDF

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Publication number
EP0575821B1
EP0575821B1 EP93109265A EP93109265A EP0575821B1 EP 0575821 B1 EP0575821 B1 EP 0575821B1 EP 93109265 A EP93109265 A EP 93109265A EP 93109265 A EP93109265 A EP 93109265A EP 0575821 B1 EP0575821 B1 EP 0575821B1
Authority
EP
European Patent Office
Prior art keywords
sensing device
stretcher
end member
belt drive
stockings
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
EP93109265A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0575821A2 (de
EP0575821A3 (enrdf_load_stackoverflow
Inventor
Eckhard Fröhlich
Peter Steiner
Karl 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.)
Wepamat Maschinenbau GmbH
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 EP0575821A2 publication Critical patent/EP0575821A2/de
Publication of EP0575821A3 publication Critical patent/EP0575821A3/xx
Application granted granted Critical
Publication of EP0575821B1 publication Critical patent/EP0575821B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to a device for stretching tubular material with at least one closed end on a mold, in particular for stretching stockings, tights and the like.
  • a device for stretching tubular material with at least one closed end on a mold, in particular for stretching stockings, tights and the like.
  • On an elongated form with at least one belt drive, which has at least one strand arranged on the edge of the elongated form for pulling up of the material on the mold, and with a switch-off device for switching off the belt drive.
  • Women's stockings go through a dyeing process during their manufacture, which can lead to shrinkage of the fabric and which at least partially results in the fabric sticking together, so that the stockings are in a crumpled form.
  • the photocell must be adjusted in accordance with the length of the stockings or tights to be put on. An optimal setting is hardly possible, since even stockings of a single clothing size have length fluctuations due to the manufacturing process. If the light barrier is adjusted too far from the end piece of the shape over which the stocking is pulled up, it can happen that the light barrier does not generate a switch-off signal at all, especially with somewhat shorter stockings, so that the belt drives continue to run until the stocking is with its foot part lies completely against the end of the mold. The friction between the stocking and the belt drives is so great that further movement of the belt drives is no longer possible at this stage and that the drive rollers of the belt drives slip.
  • the invention has for its object to provide a device for clamping tubular material with at least one closed end on a mold, in particular for clamping stockings, tights and the like. On an elongated form, by which the disadvantages of the prior art are avoided and the best possible clamping of the tubular material on the mold is achieved.
  • the switch-off device has a scanning device assigned to an end piece of the mold, via which the belt drive is switched off as soon as the tubular material with its closed end reaches the area of the end piece.
  • the belt drive is always switched off when the closed end of the tubular material, in particular the foot part of a stocking or a pair of tights, has been completely pulled onto the end piece and the scanning device thus generates a switch-off signal for switching off the belt drive.
  • the scanning device thus generates a switch-off signal for switching off the belt drive.
  • a further advantage of the arrangement according to the invention is that even if the device is used successively for fitting stockings or tights of different clothing sizes, no adjustment of the scanning device is required, which results in a considerable simplification of the workflow. Furthermore, stockings of different lengths, socks, tights and the like can be used one after the other in any way be fitted, whereby no adaptation measures are necessary, since each shape has its own scanning device for switching off the belt drive.
  • the scanning device has a displaceable, spring-loaded sensing element which at least partially protrudes from the end piece.
  • the scanning is also done optically, e.g. would be possible in principle by means of a light barrier, a particularly reliable and simple shutdown is made possible in this way.
  • the feeler element is designed as an essentially circular segment-shaped part which is guided in a slot in the end piece so as to be movable and spring loaded.
  • the probe element in this way at least partially protrudes from the end piece with its circular segment-shaped outer surface, a good adaptation to the shape of the foot part of a stocking is ensured, so that damage to the stocking fabric is excluded on the one hand and reliable triggering is achieved on the other hand.
  • the feeler element in the form of an essentially cylindrical feeler, which results in particularly simple manufacture.
  • a microswitch or a contactless sensor element is actuated via the pushbutton element.
  • an optical sensor element can be provided, which is supplied or evaluated via an optical waveguide. In this way, a particularly reliable and temperature-resistant scanning can be achieved.
  • At least one second scanning device is provided for switching off the belt drive, which is arranged at an end opposite the end piece of the mold.
  • the belt drive can also be switched off via the second scanning device. It has been shown that in the case of long stockings, due to the complete shaping, which is due to the fact that they are fully drawn onto the shape, in the case of some stockings which have turned out to be particularly long, in particular in the case of women's stockings and pantyhose when folded, the permissible maximum dimensions are exceeded, so that the hosiery or tights in a folded form no longer fit into the intended packaging.
  • a second scanning device is provided at the opposite end of the mold, which is adjustable in the longitudinal direction of the mold.
  • the second scanning device is preferably adjusted in such a way that the switch-off basically takes place via the first scanning device and that the second scanning device only responds when long stockings are stretched, which are just at the upper limit of the permissible length, so that the stockings can still be inserted to enable appropriate prior folding into the packaging.
  • the second scanning device responds before the first scanning device has responded, this has the consequence that a stocking leg at the foot end is not completely formed and therefore remains somewhat shorter than would be the case if the mold was fully clamped on.
  • the first and the second scanning device are expediently coupled to one another in such a way that the belt drive is switched off when either the first or the second scanning device or both scanning devices trigger.
  • the second scanning device is an optical scanning device, in particular a light barrier.
  • two essentially parallel shapes are provided, each with an end piece, each of which is assigned a first scanning device.
  • Such an arrangement is particularly suitable for tensioning tights. Likewise, such an arrangement can also be used for the simultaneous clamping of individual stockings.
  • each of the two forms a second scanning device at the end facing away from the end piece.
  • each belt drive After putting on stockings, tights or the like on the form or the forms, each belt drive preferably remains switched off for a while after being switched off and is then driven in the opposite direction to pull the stockings or tights back out of their shapes.
  • each form can be heated in a preferred further development, as a result of which particularly good smoothing of the tissue can be achieved.
  • heating elements can be arranged, for example, within the mold.
  • the mold can also be subjected to heat from the outside by a blower, an infrared radiator or the like.
  • a device according to the invention is generally designated by the number 10 in FIG. 1.
  • FIG. 1 only one double belt drive 16 or 20 can be seen in each mold 12, 14, the strands 17, 18 or 21, 22 of which slightly protrude outwards along the end face of the mold 12 or 14.
  • the double belt drives 16 and 20 are guided via double rollers 19 and 23 at the lower end of the molds 12 and 14 and via corresponding double rollers at the upper end of the molds, which are arranged within the upper end pieces 34 and 36 and are driven by a motor (not shown).
  • Corresponding double belt drives are arranged on the opposite end faces of the molds 12, 14.
  • the straps are made of plastic, which is preferably heat-resistant.
  • the structure of the forms and the belt drives is known per se and is described in more detail in DE 23 02 758 B2.
  • each shape 12, 14 is closed by the end piece 24, 28, which has an approximately semicircular shape and is rounded on its outer edges.
  • Each of the end pieces 24, 28 is assigned a scanning device 26, 30, via which the belt drives 16, 20 of each shape can be switched off and which is explained in more detail below with reference to FIG. 2.
  • the two forms 12, 14 are arranged with their long sides parallel to each other so that tights can be put on them.
  • a vertical holder 40 is fastened to the underside of the machine frame 32, on which a second scanning device 38 in the form of a light barrier is fixed such that it can be moved vertically, as indicated by the arrow 42.
  • the light barrier 38 is arranged between the two shapes 12, 14, so that the light beam, which is indicated by the number 44, runs approximately parallel between the two shapes 12, 14.
  • Fig. 1 only the receiver of the light barrier is shown, while the transmitter is arranged on the opposite side in a correspondingly vertically adjustable manner.
  • the two forms 12, 14 also have heating rods, by means of which heating is possible, in order to enable quick and complete smoothing of stockings put on the forms.
  • the end piece shown in FIG. 2, which is designated overall by the number 24, has a flat, approximately semicircular basic shape and is rounded on its outer sides in order to make it easier to put on stockings.
  • a slot 60 is provided, within it an essentially circular segment-shaped sensing element 46 is slidably guided, the rounded part 61 of which protrudes outward from the end piece 24.
  • the feeler element 46 is closed by an upper straight end face 62 and is connected via a central pin 48 to a flat cylindrical plate 50 which is displaceable in a central cylindrical recess 52 of the end piece 24.
  • the plate 50 is acted upon by a spring element 54 in the form of a helical spring, which is supported on an opposite collar 64.
  • an optical sensor element 56 is also fixed, which is connected to an optical waveguide 58, which is led upwards out of the end piece 24.
  • a movement of the plate 50 which occurs when the spring force is overcome as a result of a pressure exerted on the rounded part 61 of the sensing element 46, can be sensed without contact via the sensor element 56.
  • the device operates as follows:
  • the upper, designed as a vertically adjustable light barrier 38 is adjusted such that only in the largest switching size to be processed, a switching pulse is generated, and only when the permissible maximum length of a pair of tights is reached, which is possible to allow insertion into the intended packaging after folding.
  • the lower scanning devices 26, 30 and the upper scanning device designed as a light barrier 38 are linked via a logical OR circuit in such a way that the belt drives of each mold 12 or 14 are switched off when either the lower scanning device 26 or 30 or the upper scanning device 38 emits a switching pulse.
  • the belt drives are then driven in the opposite direction via a time control circuit, so that the tights or the stockings are pulled off the molds again.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP93109265A 1992-06-23 1993-06-09 Vorrichtung zum Aufspannen von schlauchförmigem Material mit einem geschlossenen Ende auf einer Form Expired - Lifetime EP0575821B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4220543 1992-06-23
DE4220543A DE4220543C1 (enrdf_load_stackoverflow) 1992-06-23 1992-06-23

Publications (3)

Publication Number Publication Date
EP0575821A2 EP0575821A2 (de) 1993-12-29
EP0575821A3 EP0575821A3 (enrdf_load_stackoverflow) 1994-03-30
EP0575821B1 true EP0575821B1 (de) 1996-09-11

Family

ID=6461633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93109265A Expired - Lifetime EP0575821B1 (de) 1992-06-23 1993-06-09 Vorrichtung zum Aufspannen von schlauchförmigem Material mit einem geschlossenen Ende auf einer Form

Country Status (4)

Country Link
US (1) US5316188A (enrdf_load_stackoverflow)
EP (1) EP0575821B1 (enrdf_load_stackoverflow)
CA (1) CA2098751C (enrdf_load_stackoverflow)
DE (2) DE4220543C1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1262485B (it) * 1993-07-29 1996-06-28 Solis Srl Metodo e dispositivo per il posizionamento automatico delle calze im macchina per formare collant
DE19627812A1 (de) * 1996-07-11 1998-01-15 Wepamat Maschinenbau Gmbh Verfahren und Vorrichtung zur Ausrichtung von im wesentlichen schlauchförmigen Textilwaren

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1948225A (en) * 1930-01-18 1934-02-20 Adolph A Myers Ironer
US2023946A (en) * 1933-04-25 1935-12-10 Edward R Ammon Toe stretching mechanism for hosiery inspection devices
GB1542827A (en) * 1976-10-26 1979-03-28 Takatori Machinery Works Ltd Automatic method and apparatus for closing a toe end of a hose utilizing a straight line stitch
IT1153834B (it) * 1980-07-11 1987-01-21 Piero Ambrogini Attrezzatura di controllo e stiratura per manufatti a calzamutanda
EP0057055B1 (en) * 1981-01-23 1985-04-17 Detexomat Machinery Limited Boarding apparatus and method
GB8303159D0 (en) * 1983-02-04 1983-03-09 Detexomat Machinery Ltd Transferring hosiery between manufacturing machines
US4703877A (en) * 1985-09-30 1987-11-03 Takatori Machinery Mfg. Co., Ltd. Automatic hose-fitting apparatus
JPH03173597A (ja) * 1989-11-30 1991-07-26 Takatori Haitetsuku:Kk 股上縫製機におけるパンティストッキング生地の自動位置決装置

Also Published As

Publication number Publication date
DE4220543C1 (enrdf_load_stackoverflow) 1993-08-05
CA2098751A1 (en) 1993-12-24
EP0575821A2 (de) 1993-12-29
US5316188A (en) 1994-05-31
CA2098751C (en) 1996-06-25
EP0575821A3 (enrdf_load_stackoverflow) 1994-03-30
DE59303723D1 (de) 1996-10-17

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