EP0985757A1 - Vorrichtung zum inneren Führen von Rundstrickwaren - Google Patents

Vorrichtung zum inneren Führen von Rundstrickwaren Download PDF

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Publication number
EP0985757A1
EP0985757A1 EP99490027A EP99490027A EP0985757A1 EP 0985757 A1 EP0985757 A1 EP 0985757A1 EP 99490027 A EP99490027 A EP 99490027A EP 99490027 A EP99490027 A EP 99490027A EP 0985757 A1 EP0985757 A1 EP 0985757A1
Authority
EP
European Patent Office
Prior art keywords
control
shaped
tube
hollow tubes
central box
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Withdrawn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
EP99490027A
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English (en)
French (fr)
Inventor
Philippe Olivier
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.)
Sodemat
Original Assignee
Sodemat
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 Sodemat filed Critical Sodemat
Publication of EP0985757A1 publication Critical patent/EP0985757A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/88—Take-up or draw-off devices for knitting products

Definitions

  • the present invention relates to the guidance of a tubular knit in space located between the needle bed of a circular knitting machine and the rolls. It relates more particularly to a simplified device allowing this guidance.
  • a tubular knit produced by a circular knitting loom leaves the bed in the form of a tube and is then laid flat passing between two call cylinders to be wound on a receiving support.
  • the passage from a circular shape to a flattened shape over a fairly small distance, depending on the height of the loom, can cause wrinkles when winding, which we try to avoid by placing inside the knitting , just above the call cylinders, a guiding device or conformator.
  • a device of this type has already been proposed in the documents FR.2.416.185 and FR.2.436.835.
  • This device marketed under the CADRATEX name by SODEMAT, has the advantage major, compared to other conformers, to avoid distortion of rows of meshes and to obtain a great homogeneity of tension on all the fabric of the trade.
  • CADRATEX The principle behind CADRATEX is based on the observation that the knitting has a circular cross-section having a determined circumference P when reaches a state of equilibrium after a certain retraction at the end of the trade. So that the winding can be done in good conditions, it is necessary, according to previous documents, that the width of the knit, at its introduction between the support cylinders, equal to half the circumference P.
  • the special feature of CADRATEX is that it guides the knit so that it goes through an intermediate section of shape rectangular and advantageously square, two sides of which are parallel to the winding line and whose perimeter is also equal to P. Thanks to this particular configuration of the guide means, the cross section of knitting maintains a constant perimeter P between the rectangular guide or preferably square and winding. In addition, all around the knit, the generator paths remain equal between these same two zones.
  • the width of the knitting winding can vary, on the same profession, depending on the material used and the operating conditions, it was already provided in the above documents to be able to make an adjustment allowing the dimensions of the inner guide to be varied.
  • all means of adjustment required a homothetic transformation of the elements of guidance relative to the central axis. So when we vary the length on one side of the rectangular or square frame of a given quantity, it is necessary to vary the distance between the spacers, at level of the call cylinders, double this quantity.
  • the solutions to achieve this has proven to be complex and therefore costly, which did not provide them with significant industrial development.
  • the goal set by the applicant is to propose a device for guidance which overcomes the aforementioned drawback.
  • this object is perfectly achieved by the device of the invention. It's about of an internal guide device for a tubular knit between the needle bed of a circular knitting loom and a pair of call cylinders. So known from documents FR.2.416.185 and FR.2.436.835, this device includes a central control unit, an axial suspension part of the knitting machine housing as well as guide elements, with two straight portions coplanar, parallel and symmetrical about the axis of the axial part and two V-shaped portions, each extending the portions coplanar with an inclination relative to the plane thereof.
  • the device comprises two hollow tubes, fixed to the central box and on either side of it by spacers, and two V-shaped elements; the two branches of each said V-shaped elements comprising bent extensions, suitable for slide in the two hollow tubes so that the four extensions and the two hollow tubes constitute the two rectilinear portions; more the device comprises a control unit for simultaneous movement and antagonist of the two V-shaped elements, this set being controlled from of the central box and connected to the two branches of each V-shaped element
  • the adjustment of the device is no longer done according to a homothetic transformation but by a deformation in one direction of the guide elements and this without respecting the condition that the variation in length on one side of the square or rectangular guide of a given quantity involves the variation of the distance between the spacers, at level of the call cylinders, double this quantity.
  • the device of the invention achieves this result thanks to a symmetrical and homogeneous displacement of the two elements in V with respect to the central box, itself positioned along the axis of the circular loom.
  • control member is a flywheel which allows, manually, the rotation of the two pinions of angle reference.
  • control unit is an electric motor which allows rotation automatic transmission of the two bevel gear, said motor being operated remotely by a remote control, for example modulating frequency.
  • each spacer making it possible to link a tube hollow and the central box consists of two telescopic rods, one fixed to the central box and the other to the hollow tube.
  • the spacing between the two straight guide portions is given by the angle at vertex of the two elements in V. So it is possible to use the same central box and the same hollow tubes for devices to be mounted on different trades, provided that you use V-shaped elements whose conformation is adapted to the type of trade.
  • Tubular knitting 1 coming from the needle bed of the circular knitting loom with a diameter D naturally shrinks to a diameter d where the knitting reaches a state of equilibrium.
  • This knitted fabric 1 is wound on itself, after having been laid flat thanks to two call rolls 2.
  • the guiding principle resides in passing the tubular knitted fabric 1 through an intermediate rectangular or advantageously square shape, the perimeter P of which is equal to the circumference of the circle having the diameter d .
  • this passage has been represented by a square shape ABCD.
  • the knitting winding width (EF) must be equal to half of the perimeter P.
  • the knitting is guided according to the polyhedron having as its base the rectangle or the square ABCD and as respective edges the straight lines connecting the vertices of said base at points E and F.
  • the stitches of the knitted fabric run through equal lengths between the intermediate guide, rectangular or square ABCD and the winding line EF.
  • the guide device with central adjustment point, which is proposed in the document FR.2.436.835 is based, like all the others, on a transformation by homethecy with respect to its center of the guide intermediate while respecting the condition that the variation of the length of one side of the intermediate guide of a given quantity must necessarily cause the variation of the distance between the elements of knitting spacing at its winding of double this amount.
  • This device 3 illustrated in FIG. 2 comprises a central box of control 4, an axial part 5 for suspending said housing 4 from the structure knitting loom as well as straight guide elements, among which two elements 6,7 are coplanar, parallel, and symmetrical by relative to axis 8 of the axial suspension part, while others guide elements 9, 10 are V-shaped elements which extend the previous elements 6,7, with an inclination relative to the plane thereof. All of these rectilinear elements 6 to 10 materialize the polyhedron ABCDEF of figure 1.
  • the central point of adjustment of the device 3 makes it possible to rotate one or more at the same time upper gears 11 driving racks 12 commander enlargement or reduction of the upper square (delimited by parallel and coplanar guide elements 6, 7) and one or more lower pinions 13 making it possible to widen or reduce the width of the part bottom of the device 3, that is to say the spacing between the two vertices of the two V-shaped guide elements 9, 10.
  • the pinion gear 11, 13 is calculated so that the simultaneous variations of the upper dimensions and are compatible and comply with the general conditions of operation of the device 3, as explained above.
  • the present invention provides a version of a guide device 17 which is particularly simplified compared to the prior state of the technical.
  • the principle which is the basis of this device 17 is to realize, when adjusting the device according to the type of knitting, deformation of the guide in one direction and no longer homothetically as previously. Contrary to what one might have thought, this displacement in only one direction, which does not respect the conditions imposed until then, nevertheless makes it possible to obtain a good quality of knitting winding and a homogeneous tension at the hands.
  • the device 17, a first embodiment of which is illustrated in Figure 3 includes a central housing 18 which is fixed to the knitting machine circular by an axial suspension piece 19, said piece being called axial because it is arranged along the vertical axis of the loom.
  • the device 17 also includes guide elements, rectilinear, some being parallel and coplanar and others being V-shaped
  • V-shaped elements 24.25 have extensions 26.27 bent at the ends of the lateral branches 28.29 of the V. These extensions 26,27 are provided to come to be fitted inside hollow tubes 20,21 and be able to slide therein telescopically.
  • Figure 4 shows the different organs of this first example which allow the telescopic movement of the two V-shaped elements 24.25, simultaneously and antagonistically.
  • a hollow tube of control 30 whose inner wall is threaded, at least at its two ends 31,32 which open out of the housing 18.
  • Two pinions 33.34 with bevel gear transform the manual rotation of a control wheel 35 mounted externally to the housing 18 in a rotation control tube 30 on itself.
  • the first pinion 33 is integral flywheel 35 while the second pinion 34 is mounted around the tube control 30.
  • Two threaded rods 36, 37, with reverse pitch, are mounted partially inside the control tube 30, one at each of 31.32 threaded ends thereof.
  • the ends 36 ′, 37 ′ of the two threaded rods 36,37 are provided with a end piece 38, 39 itself fixed to a V-shaped piece 40,41, the ends of which two lateral branches are themselves fixed to the lateral branches of the 24.25 V guide elements.
  • the rectangle or the intermediate square ABCD is materialized, in the device 17 of the invention, by the bent parts 42,43,44,45 of the guide elements 24.25 in V, said bent parts being between the lateral branches 28.29 of V and the extensions 26.27.
  • the EF spacer line at level of the call cylinders is materialized by the vertices 46,47 of V-shaped guide elements
  • the spacer 22,23 which links a hollow tube 20,21 to the central box 18 consists of two sliding parts 48,49.
  • the part 48 is a rod fixed to a tube hollow 20 while the part 49 is a hollow tube fixed to the central box 18.
  • the external dimension of the device 17, fulfilling the guiding function is given by the two V-shaped guide elements 24.25, since these are the bent parts 42,43,44,45 and the two vertices 46,47 which materialize , as seen above, the guide polyhedron.
  • the only pieces specific to a given type or range of trades are therefore the V-shaped guide elements 24.25.
  • the variation parameters will be the angle at the top 46, the angle at the elbows 42 and the length of the branches lateral 28.
  • the V-shaped part 40 is welded to the two lateral branches 28.
  • All other parts of device 17 are standard parts whatever the diameter of the loom on which the device 17 is mounted.
  • the device is sold as a kit with several pairs of V-shaped elements with different angles at the top; advantageously said pairs are nestable in each other, which allows reduce the volume of the device when it is packaged for delivery.
  • the second embodiment illustrated in Figures 5 and 6 does not differ of the first that by the control member able to rotate the two gears (33,34) for angle transmission.
  • the manual steering wheel (25) has the disadvantage that you have to open the knitting in place on the loom so that the operator can activate it.
  • the second example overcomes this disadvantage by replacing the manual flywheel (25) with an electric motor (50), double direction of rotation, which can automatically rotate both bevel gear (33,34); the motor (50) is operated remotely, and in particular through the thickness of the knit, by a remote control (51) by example with frequency modulation.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP99490027A 1998-09-10 1999-09-09 Vorrichtung zum inneren Führen von Rundstrickwaren Withdrawn EP0985757A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9811449A FR2784399B1 (fr) 1998-09-10 1998-09-10 Dispositif interne de guidage d'un tricot tubulaire
FR9811449 1998-09-10

Publications (1)

Publication Number Publication Date
EP0985757A1 true EP0985757A1 (de) 2000-03-15

Family

ID=9530411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99490027A Withdrawn EP0985757A1 (de) 1998-09-10 1999-09-09 Vorrichtung zum inneren Führen von Rundstrickwaren

Country Status (2)

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EP (1) EP0985757A1 (de)
FR (1) FR2784399B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101969068B1 (ko) * 2018-02-13 2019-04-15 (주)유영산업 원단 개폭용 가이드장치

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108689215B (zh) * 2018-07-03 2023-08-18 宁波申洲针织有限公司 一种自动收料整理装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2130660A1 (de) * 1971-06-21 1972-12-28 Schubert & Salzer Maschinen Warenbreithalter fuer Rundstrickmaschinen
FR2416185A1 (fr) * 1978-02-02 1979-08-31 Inst Textile De France Dispositif pour l'aplatissement d'un tube en materiau aisement deformable
FR2436835A2 (fr) * 1978-09-19 1980-04-18 Inst Textile De France Dispositif de guidage d'un tube de tricot entre la fonture d'un metier a tricoter circulaire et une paire de rouleaux d'appel
GB2079793A (en) * 1980-06-23 1982-01-27 Textima Veb K A knitted fabric expander for circular knitting machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2130660A1 (de) * 1971-06-21 1972-12-28 Schubert & Salzer Maschinen Warenbreithalter fuer Rundstrickmaschinen
FR2416185A1 (fr) * 1978-02-02 1979-08-31 Inst Textile De France Dispositif pour l'aplatissement d'un tube en materiau aisement deformable
FR2436835A2 (fr) * 1978-09-19 1980-04-18 Inst Textile De France Dispositif de guidage d'un tube de tricot entre la fonture d'un metier a tricoter circulaire et une paire de rouleaux d'appel
GB2079793A (en) * 1980-06-23 1982-01-27 Textima Veb K A knitted fabric expander for circular knitting machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101969068B1 (ko) * 2018-02-13 2019-04-15 (주)유영산업 원단 개폭용 가이드장치

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Publication number Publication date
FR2784399B1 (fr) 2000-12-29
FR2784399A1 (fr) 2000-04-14

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