EP2893072B1 - Nähmaschine und verfahren zum miteinandernähen von zwei übereinanderliegenden stoffschichten - Google Patents

Nähmaschine und verfahren zum miteinandernähen von zwei übereinanderliegenden stoffschichten Download PDF

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Publication number
EP2893072B1
EP2893072B1 EP13803224.8A EP13803224A EP2893072B1 EP 2893072 B1 EP2893072 B1 EP 2893072B1 EP 13803224 A EP13803224 A EP 13803224A EP 2893072 B1 EP2893072 B1 EP 2893072B1
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EP
European Patent Office
Prior art keywords
sewing
needles
needle
stitches
needle plate
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.)
Not-in-force
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EP13803224.8A
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English (en)
French (fr)
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EP2893072A1 (de
Inventor
Tiberio Lonati
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Santoni SpA
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Santoni SpA
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Publication of EP2893072A1 publication Critical patent/EP2893072A1/de
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Publication of EP2893072B1 publication Critical patent/EP2893072B1/de
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
    • D05B1/08—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
    • D05B1/18—Seams for protecting or securing edges
    • D05B1/20—Overedge seams
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/06—Loop takers, e.g. loopers for overedge-stitch sewing machines

Definitions

  • the present invention relates to a sewing machine of the overlock cut and sew type for sewing two superposed fabric flaps together and belonging to one or more textile articles.
  • the invention further relates to a process for sewing together at least two superposed flaps of fabric by means of a sewing machine of the overlock cut and sew type.
  • the sewing machine of the overlock cut and sew type can be, purely by way of example, a machine of a type produced by UNION SPECIAL ® in one of the models of the 9M series or the like, as described for example in the relative instruction manual and catalogue code 103XQA-GR of November 2006.
  • the type of stitch known as "overlock”, and also as “overedge”, is in itself widely known in the sector and will therefore not be further described in the present description.
  • this type of sewing machine can be used for numerous applications, among which also the sewing of textile articles in light fabric such as ladies' stockings, tights and the like.
  • These sewing machines are particularly applied as components of known machines for assembly of textile articles in automatic mode, in which the assembly of more than one textile article is performed automatically (for example, the assembly of two tubular stockings to form a textile article known as panty-hose).
  • the sewing machines of the overlock cut and sew type perform, completely automatically, the cutting and sewing of at least two flaps of fabric, by movement of suitable sewing needles and elements of known type known as crochets, with no intervention by an operator.
  • the aim of the present invention is therefore to obviate one or more of the above-described drawbacks.
  • An aim of the invention is to disclose a sewing machine of the overlock cut and sew type which enables sewing at least two flaps of fabric together, the flaps being superposed on one another and belonging to one or more textile articles, realising textile articles of high quality and substantially free of imperfections.
  • a further aim of the invention is to provide a sewing machine of the overlock sew and cut type which enables reducing production waste.
  • a further aim of the invention is to provide a sewing machine of the overlock sew and cut type which enables obtaining stitches of high quality and perfectly "closed" at the joining point between two flaps of fabric.
  • a further aim of the invention is to provide a sewing machine of the overlock sew and cut type which enables increasing, in a fully controlled way, one or more sewing stitches realised by the sewing machines so as to enable a controlled and predetermined stretching of the stitches with respect to the remaining stitches.
  • a further aim of the invention is to provide a sewing machine of the overlock sew and cut type which enables obtaining stitches which are extensible in a controlled way so as to provide a larger stitching effect and/or a flatter effect with respect to known stitches.
  • a further aim of the invention is to provide a sewing machine of the overlock sew and cut type which enables obtaining production with a high degree of uniformity among the various articles produced.
  • a further aim of the invention is to provide a sewing machine of the overlock sew and cut type which enables realising sewing simply, rapidly and automatically, in particular also when integrating the sewing machine in an automatic machine for assembling textile articles.
  • a further aim of the invention is to provide a sewing machine of the overlock sew and cut type which is simple, sturdy and economical to produce, including in terms of contained modifications with respect to sewing machines of known type.
  • the invention can further relate to a sewing machine in which:
  • the invention further relates to a sewing device of the overlock cut and sew type, comprising at least a needle plate and at least two sewing needles, and according to the characteristics indicated in any one of the claims or the aspects indicated in the following.
  • the invention further relates to a machine for assembling textile articles comprising a sewing machine according to any one of the appended claims or aspects indicated in the following.
  • the invention further relates to an equipment for a cut and sew sewing machine for sewing together at least two flaps of fabric, the flaps being superposed on one another and belonging to one or more textile articles, the equipment comprising at least: a needle plate for supporting at least two superposed flaps of fabric of one or more textile articles running for the formation of sewing stitches, at least a sewing needle-bearing device, provided with at least two sewing needles, and at least a spacer element and/or a lower crochet having characteristics as defined in the appended claims.
  • the invention further relates to a process further comprising the step of moving the spacer element with respect to the needle plate during the production of the sewing stitches.
  • 1 denotes in its entirety a cut and sew overlock sewing machine for sewing together at least two flaps 3a, 3b of superposed fabric belonging to one or more textile articles.
  • FIG. 1 illustrates some essential components of the sewing machine 1 according to a first embodiment of the invention.
  • the remaining parts of the sewing machine 1 are of a known type, and are not therefore illustrated in the appended figures and are not described in detail in the present description.
  • the sewing machine 1 comprises at least a needle plate 2 able to support at least two flaps 3a, 3b of fabric superposed on one or more running textile articles for formation of sewing stitches.
  • the needle plate 2 is provided with through-openings defining respective seatings 4 for the passage of sewing needles 5 and at least a lateral appendage 6 defining a running line 7 for the sewing.
  • the needle plate 2 is provided with at least two, in the illustrated embodiment three, of the seatings 4 for passage of said sewing needles 5, each of said seatings 4 for the passage of sewing needles 5 being configured such as to be crossed by at least a respective sewing needle.
  • the needle plate is provided with respective separating portions 8 able to at least partly separate each seating for passage of sewing needles 5 from the adjacent seatings at the needle 5 passage zone 9, in order to enable formation in parallel of at least two, and in the illustrated embodiment three sewing stitches 10a, 10b, 10c that are distinct and reciprocally distanced from one another.
  • Each of the seatings 4 for passage of sewing needles 5 can be dimensioned and configured for passage of a single and corresponding sewing needle, as in the embodiment illustrated in the accompanying figures.
  • the seatings 4 for passage of sewing needles 5 can be entirely separated from one another over a whole extension thereof by means of the separating portions 8.
  • the seatings 4 for passage of sewing needles 5 can be defined by through-openings completely distinct from one another.
  • the needle plate 2 can comprise at least two separating portions 8.
  • the separating portions 8 can each exhibit a thickness for example of at least 0.6mm or at least 0.8mm or at least 1 mm.
  • the separating portions 8 can exhibit a longitudinal extension along an advancing direction of the flaps 3a, 3b of fabric for example of at least 0.5 cm, or at least 1 cm, or at least 1.5 cm.
  • the needle plate 2 can be made of a metal material and the openings defining the seatings 4 can be made by milling cuts in the needle plate 2.
  • the separating portions 8 can be defined by separating elements mounted on the needle plate 2 at corresponding mounting seatings.
  • At least one of the seatings 4 for passage of sewing needles 5 can be dimensioned and configured so as to enable passage of two adjacent sewing needles 5, and therefore four through-needles 5 can be provided, for example, in three seatings 4, or three through-needles 5 in two seatings 4, two needles 5 being through-needles in a common seating.
  • the sewing machine 1 further comprises at least a sewing needle bearing device 11, such as for example a needle-bearing bar.
  • the sewing machine 1 comprises at least two, and in the illustrated embodiment at least three sewing needles 5, mounted on the sewing needle-bearing device 11 reciprocally flanked, aligned with one another and fed with respective yarns 10 for needles.
  • the sewing needles 5 are able to pass through the seatings 4 of the needle plate 2 so as to sew the flanks 3a, 3b of superposed fabric.
  • the needles 5 can be mounted on the needle-bearing device 11 at a reciprocal distance defined by an interaxis comprised for example between 1.4 and 2.8mm, or between 1.5 and 2.5mm or between 1.6 and 2.0mm, corresponding to the distances between the eyelets 19 of the needles 5 from which the respective sewing yarns exit.
  • the needles 5 can be equi-distanced from one another, being mounted on the needle-bearing device 11 at identical distances between adjacent needles 5.
  • the needles can be mounted with interaxes that are different from one another.
  • the needles can have the same caliber and be fed with identical yarns, or with different yarns of the same size. Alternatively the needles can exhibit different calibres and be fed with yarns of different size.
  • the running line 7 of the lateral appendage 6 can exhibit, at least in a section extending between the needle passage zone 9 of the sewing needles 5 and a front end portion of the appendage 6, or in its whole extension, a substantially straight conformation that is transversal with respect to a prevalent longitudinal development direction of the lateral appendage 6 and/or the running direction of the flaps 3a, 3b of fabric.
  • the lateral appendage 6 can exhibit a front portion 6a having a narrowed end having a thickness measured in a plane passing through an upper rest surface of the needle plate 2, for example of less than 2 mm or 1 mm or 0.5mm.
  • the lateral appendage 6 can exhibit a rear portion 6b of base, opposite the front end portion, having a thickness transversal to the longitudinal extension thereof comprised for example between 4 mm and 7 mm, or between 5 mm and 6.5 mm, or between 5.5 and 6 mm.
  • the lateral appendage 6 can exhibit, at the passage zone 9 of the sewing needles 5, a thickness 6c transversal to the longitudinal extension thereof comprised for example between 3 mm and 6 mm, or between 4 mm and 5.5 mm, or between 4.2 and 5 mm.
  • the transversal thickness can be for example greater than 3 mm, or greater than 3.5mm, or greater than 4 mm, or greater than 4.2mm.
  • the running line 7 of the lateral appendage 6 can exhibit, at least in a section extending between the passage zone 9 of the sewing needles 5 and a terminal end of the appendage 6, or over a whole length thereof, a substantially curvilinear and transversal conformation with respect to a prevalent longitudinal direction of the lateral appendage 6 and/or the running direction of the flaps 3a, 3b of fabric.
  • the substantially curvilinear conformation can be substantially concave, as illustrated, or substantially convex.
  • At least the lateral appendage 6 defining a running line 7 and/or at least one of the separating portions 8 and/or all the separating portions 8 can be inferiorly terminated or tapered so as to enable passage of a lower crochet in proximity of the needle plate 2.
  • the sewing machine 1 can further comprise an advancing device (not illustrated as of a known type and conventional) able to advance the flaps 3a, 3b of superposed fabric along an advancing direction with respect to the needle plate 2 during a sewing operation.
  • an advancing device not illustrated as of a known type and conventional
  • the sewing machine 1 can further comprise a device 12 for cutting the flaps 3a, 3b of superposed fabric at a fabric cutting line 20, in proximity and upstream of the lateral appendage 6 along said advancing direction of the flaps 3a,3b of fabric, as illustrated in figure 7 .
  • the sewing machine 1 can further comprise at least a sewing yarn feeder 13 for needles, able to supply sewing yarn to the needles 5 of the sewing machine.
  • the sewing machine 1 further comprises at least a lower crochet 14 and at least an upper crochet 15, able to contribute to forming sewing stitches 10a, 10b, 10c.
  • the sewing machine 1 further comprises at least a binding yarn feeder 16, able to supply binding yarn 17 to at least one of the upper crochet 15 and the lower crochet 14.
  • the lower crochet 14 is supplied directly with the binding yarn 17 which passes in at least a relative eyelet, or two eyelets, and the upper crochet 15 is not supplied directly with the binding yarn 17 and is thus "blind".
  • the upper crochet 15 can be of a type fed directly with the binding yarn 17 and the lower crochet 14 can be of the blind type.
  • the lower crochet 14, fed with binding yarn 17 contributes to the formation of the sewing stitches 10a,10b, 10c by means of the relative binding yarn 17 which cooperates with the sewing yarn 10, while the upper crochet 15, not fed, or "blind", contributes to the formation of the sewing stitches 10a,10b,10c by operating on the binding yarn 17 fed by the lower crochet 14.
  • the lower crochet 14 is provided with an additional gripping portion 25 for the sewing yarn 10, suitable for interacting, in a lower position to the needle plate 2, with at least a sewing yarn 10 destined to form at least a first sewing stitch 10c of said sewing stitches 10a, 10b, 10c such as to determine a predefined enlargement of said first sewing stitch 10c under production on said sewing machine.
  • the additional gripping portion 25 is able to interact with the sewing yarn 10 so as to pull the sewing yarn 10 and increase the quantity of sewing yarn 10 used for realising the sewing stitch 10c or the sewing stitches 10a, 10b, 10c.
  • the additional gripping portion 25 might be able to cooperate with at least two, or at least three sewing yarns 10 destined to form respective at least two, or at least three sewing stitches 10b, 10c such as to determine a predefined enlargement of the at least two, or at least three sewing stitches 10b, 10c under production on the sewing machine.
  • the additional gripping portion 25 for the sewing yarn 10 can be constituted by a protuberance, for example rounded, arranged in an intermediate portion between two end portions of the lower crochet 14.
  • the additional gripping portion 25 can extend from the lower crochet 14 transversally with respect to a main longitudinal extension direction of the intermediate portion.
  • the additional gripping portion 25 can be for example made in a single piece with the respective lower crochet 14.
  • the additional gripping portion 25 exhibits an extension, a conformation and a position on the crochet able to determine the desired cooperation with the sewing yarn, as illustrated in figure 4 .
  • the additional gripping portion 25 can be positioned on the lower crochet 14 at a distance from the front working end of the lower crochet 14 suitably determined in consideration of the conformation of the various elements involved and the desired pulling effect on the sewing yarns.
  • the sewing machine 1 further comprises a recall device (not illustrated as of known type) of the binding yarn from the upper crochet 15 of the binding yarn 17 and/or from the lower crochet 14.
  • the recall device of the binding yarn 17 from the upper crochet 15 and/or from the lower crochet 14 can be for example a stretcher blade oscillating in synchrony with the sewing needle bearing device 11.
  • the yarn feeder 13 for needles 5 and the binding yarn feeder 16 can be of the active type, able to actively supply the yarn to the needles 5 or to the crochets, or alternatively the needle yarn feeder 13 and the binding yarn feeder 16 can be of the passive type and able to passively supply the yarn which is pulled directly by the needles 5 or by the crochets.
  • the sewing machine 1 can comprise four of the sewing needles 5 mounted on the needle-bearing device 11 and the needle plate 2 can be provided with four of the openings for the passage of sewing needles 5.
  • the sewing machine further comprises at least a spacer element 21 operatively coupled to the needle plate 2 and having at least a first stitch-increasing portion 22 extending at least at a part of a first of the separating portions 8, such as to define a raised rest surface with respect to an upper rest surface of the needle plate 2 such as to determine a predefined and controlled increase in size of at least a first stitch 10c of the sewing stitches 10a, 10b, 10c under production on the sewing machine.
  • the spacer element 21 can be further provided with at least a second stitch-extending portion 23 developing at least at a part of a second of the separating portions 8, such as to define a raised rest surface with respect to the rest surface of the needle plate 2 and determine a predefined increasing of at least a second stitch 10b of the stitches 10a, 10b, 10c produced by the sewing machine.
  • the spacer element 21 is arranged in proximity of and above the needle plate 2 and in such a way as to enable passage between the spacer element 21 and the needle plate 2 of the two superposed flaps 3a, 3b of fabric.
  • the spacer element 21 can be movably mounted so as to enable varying the height position with respect to the needle plate 2 and enable passage of the flaps 3a, 3b of superposed fabric.
  • the spacer element 21 can be operatively connected or mounted to a fabric feed-presser device 18 (of known type and therefore not described in greater detail) able to compress and maintain in position at the at least two superposed flaps 3a, 3b of fabric during the sewing.
  • the sewing machine can further comprise at least an additional spacer element provided with at least an additional stitch-extending portion at least a part of a second of the separating portions 8, so as to define a raised rest surface with respect to a rest surface of the needle plate 2 to determine a predefined extending of at least a second stitch 10b of the stitches 10a, 10b, 10c produced.
  • the spacer element and/or the stitch-increasing portion 22 extend at least at part of a first and/or a second of the separating portions 8 and are configured such that the rest surface is able to support, in a raised position with respect to the upper rest surface of the needle plate 2, at least a stitch produced previously to the first stitch and/or the second stitch 10, 10c in production on the sewing machine (i.e. at least a respective stitch previously produced for each between the first and the second stitch), or at least two sewing stitches produced previously to the first stitch and/or the second stitch 10, 10c in production on the sewing machine or at least three stitches produced previously to the first stitch and/or the second stitch 10b, 10c in production on the sewing machine.
  • the stitch-increasing portion 22 can extend at least over 20% or at least 30%, or at least 40% or at least 50% or at least 60% or at least 70% of the extension of a first of the separating portions 8.
  • the above-described characteristics enable maintaining the sewing stitches extended also after the formation thereof, thus up to at least one or two or three preceding stitches before the ones under production, so as to enable a dimensional consolidation thereof and preventing the tensions of the yarn from annulling the extension obtained, thus reducing the dimensions of the stitches already produced.
  • the spacer element 21 can be mounted adjustably via mounting or fine-adjusting means 24 so as to enable varying the position with respect to the needle plate 2 in at least a parallel direction to an upper rest surface of the needle plate 2 or in at least two distinct directions parallel to the upper rest surface of the needle plate 2 and perpendicular to one another.
  • the spacer element 21 can further be selectively fixable, at least with respect to a displacement in a parallel plane to the upper surface of the needle plate 2, in at least an operating position during the functioning of the sewing machine for the production of stitches 10a, 10b, 10c.
  • the spacer element 21 can be movably mounted so as to enable varying the position thereof with respect to the needle plate 2 in at least a parallel direction to an upper rest surface of the needle plate 2 or in at least two distinct directions parallel to the upper rest surface of the needle plate 2 and reciprocally perpendicular, during the functioning of the sewing machine for the production of the stitches 10a, 10b, 10c.
  • the sewing machine can comprise activating means for moving the spacer element 21 in a predetermined way during the functioning of the sewing machine for the production of the stitches 10a, 10b, 10c.
  • the raised rest surface of the first stitch-increasing portion 22 and/or the second stitch-increasing portion 23 can be inclined and transversal with respect to the rest surface of the needle plate 2 and/or with respect to the prevalent longitudinal development direction of the respective stitch-increasing surface of the respective stitch-increasing portion and/or with respect to the running direction of the flaps 3a, 3b of fabric.
  • the first 22 and/or the second stitch-increasing portion 23 can exhibit a thickness which narrows progressively along the prevalent longitudinal development direction of the respective separating portion 8, the height of the raised rest surface being minimal at the respective terminal ends of the first and/or the second stitch-increasing portion 23.
  • the first 22 and/or the second stitch-increasing portion 23 can exhibit a thickness which progressively tapers in a perpendicular direction to the prevalent longitudinal development direction of the respective separating portions 8, the height of the raised rest surface being decreasing in the direction of and towards the lateral appendage 6 of the needle plate 2.
  • At least a part of the spacer element 21 and/or the respective stitch-increasing portions can be operatively arranged and/or mounted above the needle plate.
  • at least a third stitch-increasing portion of the spacer element 21 can be included, or at least a third spacer element can be included.
  • the spacer element 21 can be realized in a single piece with the needle plate.
  • the invention comprises both the elements illustrated and described with reference to the first embodiment and the elements of the second embodiment, determining a selective and controlled increasing of the sewn stitches deriving from the conjoined effect of the spacer element 21 and the additional gripping portion 25.
  • the invention further relates to a spacer element 21 for a sewing machine 1 of the overlock cut and sew type, couplable at a respective needle plate 2 of the sewing machine 1 and having one or more of the characteristics described previously in any combination.
  • the invention further relates to an equipment for a sewing machine 1 of the overlock cut and sew type, the equipment comprising at least a needle plate 2 and at least three sewing needles 5, so as to enable formation of at least three distinct stitches 10a, 10b, 10c reciprocally distanced from one another, as above described.
  • the equipment can essentially comprise at least the components illustrated in figure 1 and/or in figure 6 .
  • the sewing machine can be automatic, in particular in the case in which it is integrated in a machine for assembling textile articles.
  • the invention further relates to a machine for assembling textile articles, of known type and therefore not described in the present description, comprising a sewing machine 2 of the above-described type.
  • the sewing machine will not be described in greater detail as the remaining parts thereof are conventional and of well-known type.
  • the present invention further relates to a process for sewing together at least two flaps 3a, 3b of superposed fabric by means of a sewing machine of the overlock cut and sew type.
  • the process comprises at least steps of: regulating the position of a spacer element 21 with respect to a needle plate 2 so as to define a desired increase over at least one or at least two stitches 10, 10b,10c to be produced; arranging at least two superposed flaps 3a, 3b of fabric at a needle plate 2 of a cut-and-sew "overlock" sewing machine 1, the needle plate 2 being provided with at least two or at least three openings, at least partly distinct from one another, for the passage of sewing needles 5; advancing said flaps 3a, 3b of fabric with respect to said needle plate 2; progressively cutting a lateral portion of said flaps 3a, 3b of fabric; passing through each of said openings for the sewing needle passage 5 with at least a respective sewing needle fed with a respective sewing yarn 10 such that the at least three reciprocally-flanked sewing needles 5 sew said flaps 3a, 3b of fabric to one another, realising at least three distinct sewing stitches 10a, 10b, 10c, cooperating with at least
  • the process further comprises a step of manipulating, during the production of the distinct stitches 10a, 10b, 10c at least one 10c of the stitches or at least two 10b, 10c of the stitches, or all the stitches 10a, 10b, 10c by means of an additional gripping portion 25 of the lower crochet 14 so as to determine a predefined increase of the respective sewing stitches 10a, 10b, 10c under production on the sewing machine and manipulated by the additional gripping portion 25.
  • the invention offers considerable advantages.
  • the invention enables obviating at least some of the drawbacks of the prior art.
  • the invention further sews at least two superposed flaps of fabrics together, the flaps belonging to one or more textile articles, realizing textile articles of high quality and substantially free of imperfections.
  • the invention further enables obtaining sewn seams of high quality and "closed” perfectly at the join point between two flaps of fabric and/or reducing production waste.
  • the invention further enables obtaining sewn seams which are extensible in a controlled way so as to provide a wider and/or flatter sewing effect with respect to known seams.
  • the invention further enables selectively widening and/or softening with high precision and repeatability one of the stitches produced with respect to the other stitches.
  • the invention further enables obtaining production of high uniformity among the various produced articles.
  • the invention further enables realizing seams in a way that is simple, rapid and automatic, in particular also integrating the sewing machine in an automatic machine for assembly of textile articles of known type.
  • the invention is further simple, sturdy and economical to produce, and guarantees high standards of repeatability and safety.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (13)

  1. Schnitt- und Näh-"Overlock"-Nähmaschine zum Zusammennähen mindestens zweier Gewebeschichten (3a, 3b), wobei die Schichten übereinanderliegen und zu einem oder mehreren textilen Artikel/n gehören, wobei die Maschine zumindest umfasst:
    - eine Stichplatte (2) zum Abstützen mindestens zweier übereinanderliegender Gewebeschichten (3a, 3b) von einem oder mehreren gleitenden textilen Artikel/n zur Ausbildung von Nähstichen (10a, 10b, 10c), wobei die Stichplatte (2) mit Durchgangsöffnungen, die jeweilige Aufnahmen (4) zum Durchtritt von Nähnadeln (5) definieren, und mit zumindest einem seitlichen Ansatz (6) versehen ist, der eine Lauflinie (7) zum Vernähen definiert, wobei die Stichplatte (2) mit mindestens zweien dieser Aufnahmen (4) versehen ist, wobei jede dazu ausgelegt ist, von zumindest einer jeweiligen Nähnadel durchquert zu werden, wobei die Stichplatte (2) darüber hinaus mit jeweiligen Trennbereichen (8) versehen ist, die sich dazu eignen, jede Aufnahme zum Durchtritt von Nähnadeln (5) zumindest teilweise von den angrenzenden Aufnahmen (4) zum Durchtritt angrenzender Nähnadeln zumindest in der Nadeldurchtrittszone (9) zu trennen, um eine parallele Ausbildung von mindestens zwei Stichen (10a, 10b, 10c) zu ermöglichen, die eigenständig und voneinander beabstandet sind;
    - einen unteren Häkelhaken (14), der mit zumindest einer Öse versehen und zumindest mit einem Bindegarn (17) beschickt ist;
    - einen oberen Häkelhaken (15);
    - eine Vorrückvorrichtung, die sich zum Vorrücken der Schichten (3a, 3b) übereinanderliegenden Gewebes entlang einer Vorrückrichtung in Bezug auf die Stichplatte (2) während eines Heftvorgangs eignet;
    - eine Vorrichtung (12) zum Beschneiden der Schichten (3a, 3b) übereinanderliegenden Gewebes an einer Gewebeschneidelinie (20), die sich im Nahbereich und dem seitlichen Ansatz (6) entlang der Vorrückrichtung der Gewebeschichten (3a, 3b) vorgeordnet befindet;
    - zumindest eine Nähgarnzuführvorrichtung (13) für Nadeln, die den Nadeln (5) der Nähmaschine Nähgarn zuführen kann;
    - zumindest eine Bindegarnzuführvorrichtung (16), die dem unteren Häkelhaken (14) Bindegarn (17) zuführen kann;
    - eine Rückholvorrichtung für das Bindegarn (14) vom unteren Häkelhaken (14);
    - zumindest eine Nähnadel-Haltevorrichtung (11);
    - mindestes zwei Nähnadeln (5), die an der Nähnadel-Haltevorrichtung (11) angebracht sind, wobei sich die Nähnadeln gegenseitig Seite an Seite befinden, miteinander ausgerichtet sind, und mit jeweiligen Nähgarnen (10) beschickt werden, wobei die Nähnadeln (5) durch die Aufnahmen (4) der Stichplatte (2) hindurchtreten können, um die übereinanderliegenden Gewebeschichten (3a, 3b) miteinander zu vernähen;
    dadurch gekennzeichnet, dass der untere Häkelhaken (14) mit einem zusätzlichen Greifbereich (25) für das Nähgarn (10) versehen ist, der sich dazu eignet, in einer zur Stichplatte (2) unteren Position eine Wechselwirkung mit zumindest einem Nähgarn (10) einzugehen, das dazu bestimmt ist, zumindest einen ersten Nähstich (10c) der Nähstiche (10a, 10b, 10c) zu bilden, um eine vorbestimmte Vergrößerung des auf der Nähmaschine in Herstellung befindlichen ersten Nähstichs (10c) festzulegen.
  2. Nähmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der zusätzliche Greifbereich (25) mit mindestens zwei Nähgarnen (10) zusammenwirken kann, die dazu bestimmt sind, jeweilige zumindest zwei Nähstiche (10b, 10c) zu bilden, um eine vorbestimmte Vergrößerung der auf der Nähmaschine in Herstellung befindlichen mindestens zwei Nähstiche (10b, 10c) festzulegen.
  3. Nähmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zusätzliche Greifbereich (25) eine Wechselwirkung mit dem Nähgarn (10) eingehen kann, um das Nähgarn (10) mit Zug zu beaufschlagen und die Menge an Nähgarn (10) zu vergrößern, das zum Herstellen des Nähstichs (10c) oder der Nähstiche (10a, 10b, 10c) verwendet wird.
  4. Nähmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zusätzliche Greifbereich (25) für das Nähgarn (10), der zumindest mit einem Nähgarn (10) zusammenwirken kann, aus einem Vorsprung besteht, der in einem Zwischenbereich zwischen zwei Endbereichen des unteren Häkelhakens (14) angeordnet ist.
  5. Nähmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich der zusätzliche Greifbereich (25) vom unteren Häkelhaken (14) in Bezug auf eine Hauptlängserstreckungsrichtung des Zwischenbereichs transversal erstreckt.
  6. Nähmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zusätzliche Greifbereich (25) für das Nähgarn (10) einstückig mit dem jeweiligen unteren Häkelhaken (14) ausgeführt ist.
  7. Nähmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zusätzliche Greifbereich (25) für das Nähgarn (10) eine gerundete Gestaltung aufweist.
  8. Nähmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zusätzliche Greifbereich (25) eine Verlängerung, eine Gestaltung und/oder eine Position am dazugehörigen Häkelhaken aufweist, die dazu ausgelegt und in der Lage ist bzw. sind, eine gewünschte Zugwirkung auf die Nähgarne festzulegen.
  9. Nähmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie mindestens drei der Nähnadeln (5) umfasst, die, sich gegenseitig Seite an Seite befindend, an der Nadelhaltevorrichtung (11) angebracht sind, und dass die Stichplatte mit mindestens drei der Aufnahmen (4) zum Durchtritt der Nähnadeln (5) versehen ist, wobei jede der Aufnahmen (4) zum Durchtritt von Nähnadeln (5) dazu ausgelegt ist, von zumindest einer jeweiligen Nähnadel durchquert zu werden, wobei die Stichplatte (2) mit jeweiligen Trennbereichen (8) versehen ist, die jede Aufnahme zum Durchtritt von Nähnadeln (5) zumindest teilweise von den angrenzenden Aufnahmen (4) zum Durchtritt von Nähnadeln zumindest in der Nadeldurchtrittszone (9) trennen können, um eine parallele Ausbildung von mindestens drei Stichen (10a, 10b, 10c) zu ermöglichen, die eigenständig und voneinander beabstandet sind.
  10. Maschine nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der zusätzliche Greifbereich (25) mit mindestens drei Nähgarnen (10) zusammenwirken kann, die dazu bestimmt sind, jeweils drei Nähstiche (10a, 10b, 10c) zu bilden, um eine vorbestimmte Vergrößerung der auf der Nähmaschine in Herstellung befindlichen mindestens drei Nähstiche (10a, 10b, 10c) festzulegen.
  11. Unterer Häkelhaken für eine Schnitt- und Näh-"Overlock"-Nähmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der untere Häkelhaken (14) mit einem zusätzlichen Greifbereich (25) für ein Nähgarn (10) versehen ist, der sich dazu eignet, in einer zur Stichplatte (2) unteren Position eine Wechselwirkung mit zumindest einem Nähgarn (10) einzugehen, das dazu bestimmt ist, zumindest einen ersten Nähstich zu bilden, um eine vorbestimmte Vergrößerung des auf der Nähmaschine in Herstellung befindlichen ersten Nähstichs festzulegen.
  12. Ausrüstung für eine Schnitt- und Näh-"Overlock"-Nähmaschine zum Vernähen zumindest zweier Gewebeschichten (3a, 3b) nach Anspruch 1, wobei die Schichten übereinanderliegen und zu einem oder mehreren textilen Artikel/n gehören, wobei die Ausrüstung zumindest umfasst:
    - eine Stichplatte (2) zum Abstützen mindestens zweier übereinanderliegender Gewebeschichten (3a, 3b) von einem oder mehreren gleitenden textilen Artikel/n zur Ausbildung von Nähstichen (10a, 10b, 10c), wobei die Stichplatte (2) mit Durchgangsöffnungen versehen ist, die jeweilige Aufnahmen (4) zum Durchtritt von Nähnadeln (5) definieren, und mit zumindest einem seitlichen Ansatz (6), der eine Lauflinie (7) für das Nähen definiert, wobei die Stichplatte (2) mit mindestens zweien dieser Aufnahmen (4) versehen ist, wobei jede dazu ausgelegt ist, von zumindest einer jeweiligen Nähnadel durchquert zu werden, wobei die Stichplatte (2) darüber hinaus mit jeweiligen Trennbereichen (8) versehen ist, die sich dazu eignen, jede Aufnahme zum Durchtritt von Nähnadeln (5) zumindest teilweise von den angrenzenden Aufnahmen (4) zum Durchtritt angrenzender Nähnadeln zumindest in der Nadeldurchtrittszone (9) zu trennen, um eine parallele Ausbildung von mindestens zwei Stichen (10a, 10b, 10c) zu ermöglichen, die eigenständig und voneinander beabstandet sind;
    - eine Nähnadel-Haltevorrichtung (11), die mit mindestes zwei Nähnadeln (5) versehen ist, die an der Nähnadel-Haltevorrichtung (11) angebracht sind, wobei sich die Nadeln (5) gegenseitig Seite an Seite befinden, miteinander ausgerichtet sind, und mit jeweiligen Nähgarnen (10) beschickt werden, wobei die Nähnadeln (5) durch die Aufnahmen (4) der Stichplatte (2) hindurchtreten können, um die übereinanderliegenden Gewebeschichten (3a, 3b) miteinander zu vernähen;
    - einen untere Häkelhaken (14), der mit zumindest einer Öse versehen ist und zumindest mit einem Bindegarn (17) beschickt wird, wobei der untere Häkelhaken (14) mit einem zusätzlichen Greifbereich (25) für das Nähgarn (10) versehen ist, der sich dazu eignet, in einer zur Stichplatte (2) unteren Position eine Wechselwirkung mit zumindest einem Nähgarn (10) einzugehen, das dazu bestimmt ist, zumindest einen ersten Nähstich (10c) der Nähstiche (10a, 10b, 10c) zu bilden, um eine vorbestimmte Vergrößerung des auf der Nähmaschine in Herstellung befindlichen ersten Nähstichs (10c) festzulegen.
  13. Ein Verfahren zum Zusammennähen mindestens zweier übereinanderliegender Gewebeschichten (3a, 3b) mittels einer Schnitt- und Näh-"Overlock"-Nähmaschine umfasst zumindest die folgenden Schritte:
    - Prädisponieren einer Nähmaschine nach einem der vorhergehenden Ansprüche;
    - Anordnen mindestens zweier übereinanderliegender Gewebeschichten (3a, 3b) an einer Stichplatte (2) einer Schnitt- und Näh-"Overlock"-Nähmaschine (1), wobei die Stichplatte (2) mit mindestens zwei oder mindestens drei, zueinander zumindest teilweise eigenständigen Öffnungen zum Durchtritt von Nähnadeln (5) versehen ist;
    - Vorrücken der Gewebeschichten (3a, 3b) in Bezug auf die Stichplatte (2);
    - fortschreitendes Abschneiden eines seitlichen Teils der Gewebeschichten (3a, 3b);
    - Durchqueren jeder der Öffnungen für den Durchtritt von Nähnadeln (5) mit zumindest einer jeweiligen Nähnadel, die mit einem jeweiligen Nähgarn (10) bestückt ist, sodass die mindestens zwei oder mindestens drei sich gegenseitig Seite an Seite befindenden Nähnadeln (5) die Gewebeschichten (3a, 3b) aneinandernähen, mindestens zwei oder drei eigenständige Nähstiche (10a, 10b, 10c) bewerkstelligen, die mit zumindest einem, mit einem Bindegarn (17) beschickten unteren Häkelhaken (14) und mit zumindest einem oberen Häkelhaken (15) zusammenwirken;
    - während der Herstellung der eigenständigen Nähstiche (10a, 10b, 10c), Beeinflussen mindestens eines (10c) der Nähstiche oder mindestens zweier (10b, 10c) der Nähstiche oder aller dieser Nähstiche (10a, 10b, 10c) mittels eines zusätzlichen Greifbereichs (25) des unteren Häkelhakens (14), um eine vorbestimmte Vergrößerung der auf der Nähmaschine unter Herstellung befindlichen und durch den zusätzlichen Greifbereich (25) beeinflussten Nähstiche (10a, 10b, 10c) festzulegen.
EP13803224.8A 2012-09-06 2013-09-04 Nähmaschine und verfahren zum miteinandernähen von zwei übereinanderliegenden stoffschichten Not-in-force EP2893072B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001491A ITMI20121491A1 (it) 2012-09-06 2012-09-06 Macchina cucitrice e procedimento per cucire tra loro, mediante tale macchina cucitrice, almeno due lembi di tessuto sovrapposti
PCT/IB2013/058286 WO2014037885A1 (en) 2012-09-06 2013-09-04 Sewing machine and process for sewing at least two superposed flaps of fabric to one another

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EP2893072A1 EP2893072A1 (de) 2015-07-15
EP2893072B1 true EP2893072B1 (de) 2016-10-26

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EP (1) EP2893072B1 (de)
AR (1) AR092476A1 (de)
IT (1) ITMI20121491A1 (de)
TW (1) TW201414897A (de)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079882A (en) 1960-08-19 1963-03-05 Merrow Machine Co Throat plate for overedge sewing machine
US3885509A (en) 1971-08-04 1975-05-27 Burlington Industries Inc Overedge seaming
US4799439A (en) * 1981-07-14 1989-01-24 Maruzen Sewing Machine Co., Ltd. Double purpose looper for overlocking sewing machine
IT8422761V0 (it) * 1984-07-31 1984-07-31 Rockwell Rimoldi Spa Crochet superiore forato per punto sopraggitto a tre fili in macchine per cucire.
JPS625387A (ja) * 1985-06-29 1987-01-12 ジューキ株式会社 オーバーロックミシンの空環巻込装置における針糸規制方法と装置
WO1998000594A1 (en) * 1996-06-28 1998-01-08 Golden Lady S.P.A. Equipment for sewing machines known as 'overlocks' for obtaining a flat seam when joining pieces of sheer knit fabric, especially stockings, panty-hose, tights and the like

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AR092476A1 (es) 2015-04-22
WO2014037885A1 (en) 2014-03-13
EP2893072A1 (de) 2015-07-15
TW201414897A (zh) 2014-04-16
ITMI20121491A1 (it) 2014-03-07

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