EP0267880B1 - Stretcher in calenders for tubular knitted fabric - Google Patents

Stretcher in calenders for tubular knitted fabric Download PDF

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Publication number
EP0267880B1
EP0267880B1 EP87830320A EP87830320A EP0267880B1 EP 0267880 B1 EP0267880 B1 EP 0267880B1 EP 87830320 A EP87830320 A EP 87830320A EP 87830320 A EP87830320 A EP 87830320A EP 0267880 B1 EP0267880 B1 EP 0267880B1
Authority
EP
European Patent Office
Prior art keywords
stretcher
arms
support
ring
engaging
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
EP87830320A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0267880A1 (en
Inventor
Giancarlo Ferraro
Gianfranco Ferraro
Renzo Milanese
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.)
Flli Ferraro Srl
Original Assignee
Flli Ferraro Srl
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 Flli Ferraro Srl filed Critical Flli Ferraro Srl
Publication of EP0267880A1 publication Critical patent/EP0267880A1/en
Application granted granted Critical
Publication of EP0267880B1 publication Critical patent/EP0267880B1/en
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

Definitions

  • stretchers are used to spread out and stretch the tubular element, in order to enhance the finishing operations.
  • stretcher it is necessary to use a stretcher in order to achieve a uniform vaporization and to adjust the height of the tubular element to the desired value.
  • Stretchers or expanders are known which are provided with means placed between the stretcher arms, such as for instance pantograph devices, telescoping tubes or guides for controlling the distance of the arms and supporting the same, as shown in FR-A-2403412.
  • Said stretchers are provided in two or more sizes, corresponding to the various heights of the tubular fabric.
  • a first size is for heights ranging from 30 to 55 cm.
  • a second size is for heights ranging from 45 to 70 cm.
  • a drawback arises in that, in order to go from a height range to another, it is necessary to perform a replacement of the stretchers, which operation requires a machine shut down to fit a new stretcher in, and the relevant unstitching and re-sewing of the tubular knit fabric portions.
  • Another drawback is due to the risk that the stretcher device is dragged between the fabric feeding pulleys whenever fabric tearing takes places along the stretcher arms.
  • the technical problem and the main object of this invention is just to maintain the parallel alignment of the stretcher arms.
  • a further object of this invention is to be able to support the stretcher arms without said intervening means between the arms, in order to away with the aforementioned drawbacks, so that a stretcher is provided having the following advantages: it allows all the required tubular fabric height to be obtained without a need for parts replacement or fitting whereby any machine shut down is eliminated, and only a simple operation of the closing or opening displacement of the stretcher arms is needed mantaining their parallel alignment.
  • a further object of this invention is to provide an extremely accurate stretcher having a high operational reliability, inexpensive to manufacture, and which does not require frequent maintenance.
  • stretcher including stretcher arms horizontally moving in opposite directions along a drive shaft and support devices for supporting said arms and for transportation of tubular fabric along said arms consisting in that said support devices in each stretcher arm comprise a support, each support supporting:
  • the subject calender is comprised of stands 1 and 2, wherein several control and actuating mechanisms for said calender are contained, which are not shown in the drawings.
  • a known vaporizer 3 where-through the tubular fabric 4 is made to flow after having been passed through the stretcher according to this invention.
  • Said stretcher is comprised of stretcher arms 5 and 6, supported in turn by support devices described hereinafter.
  • Threaded bushings 12 and 13 are provided integral with sliding supports 9, and they engage with oppositely handed screw threads 14 and 15, provided on actuating shaft 16.
  • Bar 10 and shaft 16 receive their driving motion from known means, not shown in the Figure and enclosed within stands 1 and 2. While said shaft 16 rotates, the two oppositely handed screw threads 14 and 15 determine the displacement of bushing 12 and 13 in opposite directions, and consequently of supports 9 integral therewith.
  • stretcher arms 5 and 6 carry some suitably shaped and freely rotatable rings 17, in contact with race 11′ provided on drive wheels 11.
  • the latter are in turn provided with a mounting 18 carrying the aforesaid support device comprised of the pair of support rolls 19 and 20 having angled axis 21.
  • the transport of tubular fabric 4 is performed by means of belts 22 winding around a series of pulleys 23 and along the shaped surfaces of drive wheels 11 and of rings 17.
  • tubular knitted fabric 4 usually comprising several tubular portions sewn to each other, enters from the bottom, as it is shown in Figure 1, between rolls 19 and 20 and ring 17 provided with the belt 22, and between ring 17 and roll 21 of each arm, and it is thus transferred upwards in the direction of arrow A, owing to the rotation of drive wheels 11 associated with rings 17 and pulleys 23 mounted on arms 5 and 6, which are kept in position and supported by the sets of angled axis rolls 19 and 20 mentioned above.
  • shaft 16 When it is desired to go to a larger tubular height shaft 16 is rotated, through driving means not shown in the drawings, so that screw threads 14 and 15 make bushings 12 and 13 to move together with arms 5 and 6 towards the predetermined position, corresponding to the desired height of the tubular shape.
  • the maximum height corresponds to the position of arms 5′ and 6′ shown by dotted lines in Figure 1.
  • shaft 16 is rotated in the opposite direction, so that arms 5 and 6 move towards each other, until they reach the minimum distance shown by dotted line positions 5 ⁇ and 6 ⁇ in Figure 1.
  • the stretcher can take any position from a minimum to a maximum distance, while no replacement of the stretcher is required, no shut down of the machine is necessary, and the tubular fabric does not have to be taken off the stretchers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP87830320A 1986-11-10 1987-09-07 Stretcher in calenders for tubular knitted fabric Expired - Lifetime EP0267880B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8622274A IT1213533B (it) 1986-11-10 1986-11-10 Allargatore in calandre per tessuti di maglia tubolari.
IT2227486 1986-11-10

Publications (2)

Publication Number Publication Date
EP0267880A1 EP0267880A1 (en) 1988-05-18
EP0267880B1 true EP0267880B1 (en) 1991-04-10

Family

ID=11194006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87830320A Expired - Lifetime EP0267880B1 (en) 1986-11-10 1987-09-07 Stretcher in calenders for tubular knitted fabric

Country Status (4)

Country Link
EP (1) EP0267880B1 (it)
DE (1) DE3769282D1 (it)
ES (1) ES2021753B3 (it)
IT (1) IT1213533B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828094A1 (de) * 1988-08-18 1990-02-22 Dornier Gmbh Lindauer Breithalter fuer schlauchware
IT1271712B (it) * 1994-11-09 1997-06-04 Ferraro Srl Flli Allargatore migliorato in calandre per tessuti di maglia tubolari
IT1303700B1 (it) * 1998-11-04 2001-02-23 Ferraro Spa Allargatore a smontaggio rapido per tessuti tubolari.
ITUD20030205A1 (it) * 2003-10-14 2005-04-15 Lafer Spa Dispositivo allargatore per un tessuto tubolare.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882577A (en) * 1973-12-05 1975-05-13 Aronoff Edward Israel Apparatus for treating tubular fabrics
IT1078779B (it) * 1976-08-11 1985-05-08 Conti Fulvio Impianto di mercerizzazione per tessuti tubolari
US4173812A (en) * 1977-09-19 1979-11-13 Samcoe Holding Corporation Apparatus for calendering tubular knitted fabrics

Also Published As

Publication number Publication date
ES2021753B3 (es) 1991-11-16
EP0267880A1 (en) 1988-05-18
DE3769282D1 (de) 1991-05-16
IT1213533B (it) 1989-12-20
IT8622274A0 (it) 1986-11-10

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