EP2602364A1 - Verbesserungen an einer plattenlosen zirkulären webmaschine und verbessertes verfahren zur herstellung eines hemdes mit der plattenlosen zirkulären webmaschine - Google Patents

Verbesserungen an einer plattenlosen zirkulären webmaschine und verbessertes verfahren zur herstellung eines hemdes mit der plattenlosen zirkulären webmaschine Download PDF

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Publication number
EP2602364A1
EP2602364A1 EP11813968.2A EP11813968A EP2602364A1 EP 2602364 A1 EP2602364 A1 EP 2602364A1 EP 11813968 A EP11813968 A EP 11813968A EP 2602364 A1 EP2602364 A1 EP 2602364A1
Authority
EP
European Patent Office
Prior art keywords
fabric
new
needle
needles
circular loom
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Withdrawn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
EP11813968.2A
Other languages
English (en)
French (fr)
Other versions
EP2602364A4 (de
Inventor
Dante Battaglio
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.)
Avanco S/a Industria E Comercio De Maquinas
Original Assignee
Avanco S/a Industria E Comercio De Maquinas
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 Avanco S/a Industria E Comercio De Maquinas filed Critical Avanco S/a Industria E Comercio De Maquinas
Publication of EP2602364A1 publication Critical patent/EP2602364A1/de
Publication of EP2602364A4 publication Critical patent/EP2602364A4/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Withdrawn legal-status Critical Current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
    • D04B15/06—Sinkers
    • 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
    • D04B15/14—Needle cylinders
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/02—Circular knitting machines with independently-movable needles with one set of needles

Definitions

  • This description relates to a patent of invention for a circular loom without plate and process for weaving fabric employing said loom belonging to the field of textile industry, which have been enhanced to improve the textile structure of the fabric and the process for weaving it.
  • a circular loom comprises: a thread insertion subassembly generally arranged on top (cage); ring-shaped weaving subassembly itself arranged at an intermediate level (ribber); and a lower subassembly which receives the fabric.
  • the weaving subassembly comprises, essentially ( fig. 1 ): cylinder (ring) 100 having all over its perimeter, a plurality of slots, each with an axial extension 101 outside the cylinder and radial upper extension 102 communicating with the axial extension; a plurality of hook-shaped head needles 103 and locking pawl, each one moving vertically in the respective axial extension of a slot, between an upper thread inserting position and a lower position where it completes knitting and interweaves with the last knitting woven; a plurality of plate pairs (blades) 104 lateral to respective needles and having three functions: fabric holding; knitting equalization; and forming a detachment plan; said plates move radially between an advanced position, where they are arranged inside respective radial extensions of the slot and cooperate with the needles, and a retreated position where they are at rest, outside the radial extensions of the slot; cam block 105 located in front of the lower section of the cylinder 100 and featuring a
  • the loom with the weaving subassembly as described above produces a knitted fabric 150 consisting of: ( fig. 2 ) longitudinal stripes 151 with more threads; and longitudinal stripes 152 interspersed with those with fewer threads. Stripes with fewer threads are formed as a result of the plates in a manner known in the art.
  • the circular loom has no plate.
  • the weaving subassembly comprises, essentially ( fig. 3 ): cylinder 200 having a plurality of external axial slots 102 arranged all over the perimeter; and upper surfaces 102 adjacent the slots, which actuate as support in the formation and descending movement of the knitted fabric, in replacement of the plates; a plurality of hook-shaped needles 203 and locking pawl, each moving vertically in the respective axial slot 201, between an upper thread inserting position and a lower position where it completes the weaving of the knitted fabric; and cam block 204 located in front of the upper section of the cylinder 200 and having a groove-shaped cam where the cam follower projection provided in the lower part of the needle is geared.
  • the loom equipped with the above-described weaving subassembly without plate produces a knitted fabric 250 ( fig. 4 ) with uniform longitudinal stripes 251 because of the lack of plates.
  • the loom needles 203 have a descending course extending from an upper position, where a new warp thread is inserted in the needle head and from which it carries the new warp thread downwards; intermediate position at which the new warp thread is interwoven with the last knitted fabric supported on upper supporting surfaces 202 of the cylinder 200, replacing the plates, where said new warp thread is plied and a new knitting is formed; and lower position, where the new knitting is finished and at which the ascending course starts.
  • the new knit so far supported by the supporting surfaces 202, and the whole fabric, can be pulled up by the needles 203, which may deform or even break the new knitting or others.
  • this problem is solved by means of a strict follow-up of the operation by the machine operator, and when such phenomenon happens, the operator puts his hand between the threads and manually pushes down the fabric, and/or such problem is solved by inserting the hairs of a brush between needles and pushing down the fabric.
  • the objective of the present patent of invention is to provide an improved loom and weaving process to overcome the fabric ascending problem, without the need of manual intervention by the operator, as currently happens.
  • Another objective is to provide an improvement that, besides overcoming the problem, requires no highly complex construction or manufacture which could render the invention uninteresting.
  • Another objective is to provide an improvement at a suitable cost.
  • Another objective is to provide an improvement that can be incorporated, preferably in single ribber circular looms, for the manufacture of comfortable and light knitted fabrics with elasticity in two directions, perfect vanisé and free from vertical streaks.
  • the circular loom 1 object of the present patent of invention, comprises essentially: the usual upper cage subassembly (not shown) for supporting the reels and unwinding the warp threads; an intermediate weaving subassembly (single ribber) 2 shown in figures 5 to 7 ; and lower subassembly for receiving the fabric (not shown).
  • the weaving subassembly 2 comprises, essentially ( fig. 5 ): cylinder 3 having a plurality of axial slots 4 arranged externally and all over the perimeter; upper surfaces 5 adjacent the slots 4, which work as support for the formation and descent of the knit, replacing the plates; said cylinder further comprising an inner slope surface 6 extending from the upper surfaces 5 and supporting the fabric already knitted; a plurality of needles 10 with hook-shaped heads 11 and a hinged pawl 12 for locking the head; each needle moving vertically in the respective axial slot 4; and a cam block 20 located in front of the lower section of the cylinder 2 and featuring a groove-shaped cam (not shown), where the cam follower projection (not shown) provided in the lower part of the needle 10 is geared; said cam moving the needle up and down in a manner known in the art.
  • the present improvement consists of providing the above-described weaving subassembly of the type without plate 2, with a fabric ascent limiter 20 in the ascending movement of the needles 10.
  • Said fabric ascent limiter 30 comprises essentially: a plurality of movable blades 31 that limit the ascending movement of the fabric, arranged in vertical plans radially to the weaving subassembly 2 and that pass through needles 10, each blade 31 consisting of an upper horizontal tip 32 having a lower limiting edge 33 located in the horizontal plan slightly above the upper supporting surfaces 5 of the cylinder 3, which replace the plates; said movable, radial fabric ascending limiting blade 31 featuring an end 34 opposite to the tip 32 featuring a cam follower projection 35; said fabric ascent limiter 30 further comprises a blade supporting 40 and moving 31 assembly comprised essentially by a lower supporting block 41 and a blade guide 31; and upper cam block 42 having a cam groove 43 where the cam follower projections 35 of the blades 31 are geared; said cam groove 43 and cam follower projections 35 are arranged so the blades 31 move following a radial trajectory between: 1)- An advanced position ( fig.
  • the cylinder 3 shows the modified profile, as described, to allow working without plates.
  • the cam and guide assembly 40 of the fabric ascent limiters 31 may be either fixed movable or fixed, which allows overriding or not the actuation of the ascent limiters 31, where desired.
  • the weaving subassembly 2 of the type without plate featuring the above-described fabric ascent limiter 30, performs an improved weaving process, also object of protection as claimed in this patent, comprised, essentially by the usual steps of:
  • the improvement introduced in the above-described weaving process comprises providing it with the following additional step: 4)- Limitation of the fabric ascending movement during the ascending course of the needles, comprised by:
  • Using fabric ascent limiters allows knitting directly using the ribber profile of the cylinder and keeps the fabric low in the initial phase of the work, as needed to reknit, further allowing interweaving the fabric, in the ascending course of the needle, after knitting, without the help of a fabric puller. As no fabric puller is required, the construction of the loom is simplified, as desirable, thus facilitating its manufacture and favoring cost savings.
  • the circular loom without plate and weaving process carried out with it objects of the present patent, may receive changes in materials, dimensions, construction and/or functional configuration and/or ornamental details, or steps and parameters of the process without departing from the scope of protection claimed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
  • Knitting Of Fabric (AREA)
EP11813968.2A 2010-08-06 2011-07-27 Verbesserungen an einer plattenlosen zirkulären webmaschine und verbessertes verfahren zur herstellung eines hemdes mit der plattenlosen zirkulären webmaschine Withdrawn EP2602364A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI1003043 BRPI1003043A2 (pt) 2010-08-06 2010-08-06 aperfeiçoamento em tear circular sem platina e processo aperfeiçoado de tecer tecido de malha em tear circular sem platina
PCT/BR2011/000247 WO2012016309A1 (pt) 2010-08-06 2011-07-27 Aperfeiçoamento em tear circular sem platina e processo aperfeiçoado de tecer tecido de malha em tear circular sem platina

Publications (2)

Publication Number Publication Date
EP2602364A1 true EP2602364A1 (de) 2013-06-12
EP2602364A4 EP2602364A4 (de) 2014-02-26

Family

ID=45558867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11813968.2A Withdrawn EP2602364A4 (de) 2010-08-06 2011-07-27 Verbesserungen an einer plattenlosen zirkulären webmaschine und verbessertes verfahren zur herstellung eines hemdes mit der plattenlosen zirkulären webmaschine

Country Status (5)

Country Link
EP (1) EP2602364A4 (de)
AR (1) AR085188A1 (de)
BR (1) BRPI1003043A2 (de)
TW (1) TW201207179A (de)
WO (1) WO2012016309A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1402415B1 (it) 2010-10-26 2013-09-04 Santoni & C Spa Macchina per maglieria, particolarmente ad elevata finezza.
DE102010054540A1 (de) 2010-12-15 2012-06-21 Ulrich Hofmann Vereinfachte Single-Rundstrickmaschine
ITFI20120209A1 (it) 2012-10-15 2014-04-16 Renato Pilotelli "macchina monocilindro da maglieria"

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995004176A1 (en) * 1993-07-27 1995-02-09 Lambda S.R.L. Knitting machine, particularly for hoisery and similar products with a high degree of fineness, with needle plates provided with replaceable fixed sinkers
US5501085A (en) * 1993-10-27 1996-03-26 Pai Lung Machinery Mill Co., Ltd. Fabric holding-down mechanism for double knit machines
ITCO20040021A1 (it) * 2004-12-28 2005-03-28 Franco Sciacca Metodo e apparecchiatura per produrre articoli di calzetteria e maglieria tubolare e tessuti a maglia con macchine mono fornitura

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8729992D0 (en) * 1987-12-23 1988-02-03 Scobie & Junor Group Yarn positioning apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995004176A1 (en) * 1993-07-27 1995-02-09 Lambda S.R.L. Knitting machine, particularly for hoisery and similar products with a high degree of fineness, with needle plates provided with replaceable fixed sinkers
US5501085A (en) * 1993-10-27 1996-03-26 Pai Lung Machinery Mill Co., Ltd. Fabric holding-down mechanism for double knit machines
ITCO20040021A1 (it) * 2004-12-28 2005-03-28 Franco Sciacca Metodo e apparecchiatura per produrre articoli di calzetteria e maglieria tubolare e tessuti a maglia con macchine mono fornitura

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2012016309A1 *

Also Published As

Publication number Publication date
AR085188A1 (es) 2013-09-18
BRPI1003043A2 (pt) 2012-04-10
TW201207179A (en) 2012-02-16
WO2012016309A1 (pt) 2012-02-09
EP2602364A4 (de) 2014-02-26

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