EP1298241A1 - Verfahren und Vorrichtung zum Rauhen oder Schmirgeln von Textilwaren, insbesondere von schlauchförmigen Strickwaren - Google Patents

Verfahren und Vorrichtung zum Rauhen oder Schmirgeln von Textilwaren, insbesondere von schlauchförmigen Strickwaren Download PDF

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Publication number
EP1298241A1
EP1298241A1 EP02021565A EP02021565A EP1298241A1 EP 1298241 A1 EP1298241 A1 EP 1298241A1 EP 02021565 A EP02021565 A EP 02021565A EP 02021565 A EP02021565 A EP 02021565A EP 1298241 A1 EP1298241 A1 EP 1298241A1
Authority
EP
European Patent Office
Prior art keywords
raising
cylinders
fabric
grinding
fabrics
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Withdrawn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
EP02021565A
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English (en)
French (fr)
Inventor
Bruno Scortegagna
Gianrenato Ruaro
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.)
Lafer SpA
Original Assignee
Lafer SpA
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 Lafer SpA filed Critical Lafer SpA
Publication of EP1298241A1 publication Critical patent/EP1298241A1/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Withdrawn legal-status Critical Current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
    • D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics

Definitions

  • the invention concerns a method and the relative device for raising or grinding fabrics, particularly, but not only, tubular fabrics.
  • the invention is applied in the field of textile finishing, on raising or grinding machines of the type with a rotary drum or barrel, or on grinding machines with a plurality of rotary cylinders lined with abrasive material located in horizontal, vertical or mixed lines.
  • a first method provides to work first one face of the tubular fabric, to unload the fabric from the machine, to rotate the fabric and then to return it to the machine in order to work the second face.
  • This method entails a certain difficulty in keeping the two faces of the fabric distinct and in preventing strips of fabric remaining unraised, in the second pass, or strips of fabric which have already been raised in the first pass from coming into contact with the drum, which gives unsatisfactory raising results.
  • Another method provides to use a machine with two drums, wherein one face of the fabric is made to pass on a first drum, while the second face is made to pass on a second drum to work the fabric front and back.
  • one face of the fabric is made to pass on a first drum
  • the second face is made to pass on a second drum to work the fabric front and back.
  • the most widely used solution is to work one face of the tubular fabric on one side of a machine with one or two drums, to remove it from the machine and then make it pass on a "turnpiece” device which not only turns it but also moves it from one side of the machine to the other, in order to work the second face.
  • the second face of the tubular fabric is worked on one side of the machine which is different from that on which the first face of the fabric is worked. This makes possible to use the whole height of the machine and to reduce the danger of the tubular fabric rotating, since it is constantly controlled on the width by guide rollers and by stretching devices supplied for this purpose.
  • the fabric shrinks and lengthens, even quite considerably.
  • the "turnpiece" device which turns the fabric from one side to the other is resistant to the sliding of the fabric and tends to increase the length even more.
  • the purpose of the invention is to improve the conditions in raising and/or grinding operations on machines with a drum or with in-line working cylinders, allowing on the one hand to improve the efficiency of the machines working over the whole height of the drum and/or working cylinders, and on the other hand to guarantee optimum tension and control of the fabric during the simultaneous passage of its two faces on the working cylinders.
  • the invention is applied on raising and/or grinding machines substantially of a conventional type, including a rotary drum on which a plurality of working cylinders, also rotary and lined with raising and/or abrasive material, are mounted, and including at least two drawing cylinders, arranged respectively at inlet to and outlet from the rotary drum, in order to define the winding tension of the fabric on the working cylinders.
  • the invention is advantageously applied in working tubular fabrics, but the teaching can be used in the working of open fabrics too.
  • the invention provides to make two different fabrics, or different faces of the same fabric, pass on the same raising/grinding drum, which cooperates with drawing cylinders made in at least two parts which are driven and controlled independently from each other.
  • a first fabric, or the first face of a fabric is kept under tension between the inlet and outlet of the drum, on two corresponding parts, for example the right, of the two drawing cylinders; the second fabric, or the second face, is kept under tension between the other corresponding parts of the drawing cylinders, for example the left.
  • every drawing cylinder is divided into three, four or more parts, driven independently from each other, in order to guide and tension corresponding three, four or more fabrics on the same drum.
  • the invention makes possible to simultaneously work two fabrics or two faces advancing in opposite directions along the drum, since each fabric is fed and tensioned independently of the other.
  • the tension of the fabric can be controlled precisely even outside the machine, for example at the outlet of the turnpiece, and at inlet to the second pass, so as to prevent the accumulation of fabric between one pass and the other over the drum.
  • the invention also allows to work a fabric which is open along its whole height, by appropriately synchronizing the two or more parts of the drawing cylinders. This synchronisation can be achieved mechanically, electronically or electro-magnetically.
  • the two parts of the drawing cylinders are constrained/released by means of remote drive means.
  • the number 10 indicates a raising or grinding device in its entirety for fabrics 20 according to the invention.
  • the device 10 comprises a supporting and containing frame 16, a drum 11 which has on its periphery a plurality of rotating raising/grinding cylinders 18, two drawing cylinders, an inlet cylinder 12 and an outlet cylinder 13, and a turnpiece apparatus 14.
  • the device 10 also comprises return rollers 15 able to define the path of the fabric 20 being worked.
  • the fabric 20 is of the tubular type and has a first face 21 and a second face 22 opposite the first.
  • the drum 11 is able to rotate, in one direction or the other, around its own axis, and the fabric 20 is brought into contact with the circumference of the raising/grinding cylinders 18 which carry out their action on the relative face of the fabric 20.
  • the winding tension of the fabric 20 on the drum 11 is determined by the relative velocity of the drawing cylinders 12 and 13.
  • the two cylinders 12 and 13 in this case are equal, and are each formed by two respective parts 12a, 12b and 13a, 13b, arranged coaxial and adjacent.
  • the cylinder 12 comprises (Fig. 5) a main shaft 31 and a secondary shaft 32, coaxial to and outside the first.
  • Each shaft 31 and 32 has one end connected to a corresponding drive member 35 and 36, each of which is suitable to impart to the relative shaft 31 and 32 a desired velocity and a desired direction of rotation independent of the direction of rotation and velocity of the other.
  • Each shaft 31 and 32 is connected by means of a corresponding flange 33, 34 to a relative part 12a, 12b of the cylinder 12.
  • the two parts 12a, 12b are made coaxial with the relative shafts 31, 32 by means of the bearings 39 and 40.
  • the two shafts 31 and 32 can be constrained together by means of a constraining device, for example an electric command or an electronic control, for example by means of a vectorial encoder or inverter, brushless motors or similar, so that the velocities of the two parts of the cylinder 12a, 12b are exactly equal, so as to allow to work even a single fabric 20 over its whole length.
  • a constraining device for example an electric command or an electronic control, for example by means of a vectorial encoder or inverter, brushless motors or similar, so that the velocities of the two parts of the cylinder 12a, 12b are exactly equal, so as to allow to work even a single fabric 20 over its whole length.
  • the constraining element comprises electromagnetic clutches 38 which exclude transmission of one of the two motors to the relative shaft and which transmit command to the two shafts 31 and 32 by means of a single motor.
  • the shafts 31, 32 are constrained by coupling elements of a mechanical type.
  • the turnpiece apparatus 14 is arranged downstream of the cylinder 13, and is able to turn the fabric 20 through 180° along its longitudinal axis, and to move it sideways so that the fabric 20 can be rewound on the drum 11 to be worked on the face 22 too, using the free part of the drum 11.
  • the device 10 as described heretofore is used as follows.
  • a tubular fabric 20 is introduced into the device 10 with its first face 21 facing downwards, so as to be put into contact with the raising/grinding cylinders 18.
  • the fabric 20 is positioned on one side of the machine, for example the right, and is controlled in its path around the drum 11 by the respective parts 12b, 13b of the drawing cylinders 12 and 13.
  • the relative velocity of the two cylinders 12, 13 allows to regulate the tension of the fabric 20 and, keeping said tension constant, to absorb the lengthening which the fabric 20 is subject to as a result of the action of the working cylinders 18, particularly in raising operations.
  • the fabric 20 is then made to exit from the device 10 and introduced into the turnpiece apparatus 14, such as is already known in the state of the art and therefore is not shown in detail in the drawings.
  • the fabric 20 is rotated through 180° and also displaced laterally towards the opposite side of the device 10, the left side.
  • the fabric 20 is then made to re-enter the device 10 and brought into contact with the drum 11 substantially following the same path of the previous pass, with the difference that it is displaced laterally.
  • the tension is controlled by means of the parts 12a and 13a of the cylinders 12 and 13, which can assume different speeds of rotation from the parts 12b, 13b.
  • Such velocities are determined by working requirements which for the face 22 of the fabric 20 are generally different from those necessary for working the face 21.
  • Figs. 3 and 4 we have an analogous solution to that described in Figs. 1 and 2, with the difference that the device 110 has two drums 11, 111 which are one above the other and generally equipped with raising cylinders 18, respectively 118, with clothings of a different type.
  • the arrangement of the drums 11 and 111 allows a first face 21 of the fabric 20 to be put into contact first with the lower drum 111 and then with the upper drum 11; the fabric 20 is subsequently inserted into the turnpiece apparatus 14 where it is rotated through 180° and then made to re-enter, always on the same side, the device 110. Once it has re-entered the device 110, the fabric 20 follows the same path between the drums 111 and 11, but presenting its second face 22 to the raising cylinders 18.
  • the fabric 20 After passing between the two drums 11 and 111, the fabric 20 can be discharged from the device 110 and stored.
  • the device 110 with two drums 11, 111 has the raising cylinders 18 and 118 which carry the same clothings; this allows to work the first face 21 on the lower drum 111 and the second face 22 on the upper drum 11.
  • the fabric 20 is subsequently rotated by the turnpiece apparatus 14, displaced laterally and returned to the device 110 to work the second face 22 on the drum 111 and the first face 21 on the upper drum 11.
  • the drums 11 can be associated, particularly in the case of grinding devices, with return rollers 37 (Figs. 6, 7), on which devices to detect the tension, such as load cells for example, can be mounted.
  • cleaning brushes may be provided, of a standard type for raising, arranged below every drum 11 or 111 and able to clean the cylinders 18 ad 118.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP02021565A 2001-09-28 2002-09-26 Verfahren und Vorrichtung zum Rauhen oder Schmirgeln von Textilwaren, insbesondere von schlauchförmigen Strickwaren Withdrawn EP1298241A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD20010156 ITUD20010156A1 (it) 2001-09-28 2001-09-28 Procedimento e dispositivo per la garzatura o smerigliatura di tessuti, in particolare di tessuti tubolari
ITUD20010156 2001-09-28

Publications (1)

Publication Number Publication Date
EP1298241A1 true EP1298241A1 (de) 2003-04-02

Family

ID=11460650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02021565A Withdrawn EP1298241A1 (de) 2001-09-28 2002-09-26 Verfahren und Vorrichtung zum Rauhen oder Schmirgeln von Textilwaren, insbesondere von schlauchförmigen Strickwaren

Country Status (2)

Country Link
EP (1) EP1298241A1 (de)
IT (1) ITUD20010156A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088431A1 (de) * 1982-03-09 1983-09-14 Costruzioni Meccaniche Michele Lamperti S.P.A. Verfahren und Mittel zum Verbessern der Anwendung von Rauhmaschinen
EP0649927A2 (de) * 1993-08-30 1995-04-26 SPEROTTO RIMAR S.p.A. Vorrichtung zum Rauhen von Geweben oder Gestricken mit Spannungsteuerung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088431A1 (de) * 1982-03-09 1983-09-14 Costruzioni Meccaniche Michele Lamperti S.P.A. Verfahren und Mittel zum Verbessern der Anwendung von Rauhmaschinen
EP0649927A2 (de) * 1993-08-30 1995-04-26 SPEROTTO RIMAR S.p.A. Vorrichtung zum Rauhen von Geweben oder Gestricken mit Spannungsteuerung

Also Published As

Publication number Publication date
ITUD20010156A1 (it) 2003-03-28

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