EP0805228B1 - Präzisionsnähmaschine zum Ansetzen eines schlauchförmigen Bundes an den Rand eines gestrickten oder gewebten Stoffes oder dgl. - Google Patents

Präzisionsnähmaschine zum Ansetzen eines schlauchförmigen Bundes an den Rand eines gestrickten oder gewebten Stoffes oder dgl. Download PDF

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Publication number
EP0805228B1
EP0805228B1 EP19960830254 EP96830254A EP0805228B1 EP 0805228 B1 EP0805228 B1 EP 0805228B1 EP 19960830254 EP19960830254 EP 19960830254 EP 96830254 A EP96830254 A EP 96830254A EP 0805228 B1 EP0805228 B1 EP 0805228B1
Authority
EP
European Patent Office
Prior art keywords
welt
tubular
tubular welt
machine
support 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.)
Expired - Lifetime
Application number
EP19960830254
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English (en)
French (fr)
Other versions
EP0805228A1 (de
Inventor
Mario Valle
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.)
Conti Complett SpA
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Conti Complett SpA
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Filing date
Publication date
Application filed by Conti Complett SpA filed Critical Conti Complett SpA
Priority to DE1996617397 priority Critical patent/DE69617397T2/de
Priority to ES96830254T priority patent/ES2164860T3/es
Priority to EP19960830254 priority patent/EP0805228B1/de
Publication of EP0805228A1 publication Critical patent/EP0805228A1/de
Application granted granted Critical
Publication of EP0805228B1 publication Critical patent/EP0805228B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B35/00—Work-feeding or -handling elements not otherwise provided for
    • D05B35/06—Work-feeding or -handling elements not otherwise provided for for attaching bands, ribbons, strips, or tapes or for binding
    • D05B35/062—Work-feeding or -handling elements not otherwise provided for for attaching bands, ribbons, strips, or tapes or for binding with hem-turning

Definitions

  • the present invention relates to a precision-stitch sewing machine for applying a tubular welt along a predetermined sewing line to an edge of a knitted or woven fabric or the like, according to the preamble of Claim 1.
  • edges of a garment are generally finished in a so-called edging operation in which a knitted, woven or other welt is applied to the edge that is to be finished.
  • the edging operation can be performed on linking machines, which give a high-quality finish to the edge.
  • these machines not only require specialist workers but also have the disadvantage that linking each welt takes a large amount of time. As a result it is uneconomical to use them except for higher-value garments.
  • the edging operation can also be carried out on precision-stitch sewing machines which pass a strip welt through a folding unit that folds the strip around the edge before it is sewn in place. This allows the strip welt to be applied to the edge quickly and cheaply as a simulation of the linked version.
  • tubular type of welt rather than the strip type, as a tubular welt folded around the edge that is to be finished forms a firmer structure less likely to shift out of the sewing line than the kind of structure obtainable by folding a single strip welt, in which the edges are essentially independent of each other.
  • the use of a tubular welt consequently means that the latter can be positioned relative to the sewing line and guided through the sewing area with greater precision.
  • tubular welts have not become widespread because the precision-stitch sewing machines currently used are unable to fold tubular welts satisfactorily around the fabric edge, and it would be unreasonable to consider applying them manually on conventional sewing machines in the context of industrial-scale production.
  • Document US 3,811,391 discloses a sewing machine according to the preamble of claim 1, comprising a sewing guide apparatus particularly adapted for guiding the edge of a first fabric and the closed tubular end of a second fabric to the sewing needle in a manner such that the first fabric edge is overlapped on both sides thereof by double layers of the folded tubular end of the second fabric.
  • the sewing guide apparatus comprises a first guide member having enlarged tapered head portion and a pair of rearwardly extending prongs defining an elongated opening therebetween.
  • the above mentioned sewing machine has the drawback that different sewing guide apparatus have to be used if tubular welt of different diameter are to be folded.
  • the problem upon which the present invention is based is that of devising a machine for carrying out the edging operation whose structural and functional characteristics are such as to satisfy the above need and at the same time to overcome all the problems mentioned with reference to the prior art.
  • Said parting means advantageously include a fork component, over which the tubular welt is fitted and advanced, having two rods that diverge in said direction, that is approximately perpendicular to the support plate, in the direction of advance of the tubular welt.
  • 1 is a general reference for a precision-stitch sewing machine in accordance with the invention for applying a tubular welt 2 to an edge 3, which may for example be the waste band of a sweater.
  • the tubular welt 2 preferably includes an elasticized insert 2a extending axially along the full length of the welt and a border 2b positioned diametrically opposite the elasticized insert 2a.
  • the machine 1 includes a horizontal work surface 5 supported by a frame of the machine 1.
  • the work surface 5 is fitted with: a sewing unit 6, a feed unit 7 for feeding the edge 3 to which the welt is to be applied, entrainment means 8 for the tubular welt 2 and a folding unit 9 for folding the tubular welt 2 around the edge 3.
  • the sewing unit 6 includes a vertical column from which extends an overhanging sewing head 10.
  • a bar 11 projects from the free end of the sewing head 10 towards the work surface 5 in a vertical direction Z-Z.
  • the bar 11 is made to reciprocate in the vertical direction Z-Z by an electric motor with which the machine 1 is equipped and to which the bar 11 is kinematically connected.
  • Mounted in the bottom end of the bar 11 is a needle 12 pointing in the vertical direction Z-Z.
  • the work surface 5 supports, parallel with itself, a support plate 13 of a type known per se for supporting the tubular welt 2.
  • a vertical through hole in the support plate 13 allows the needle 12 to descend during sewing.
  • a sewing area 15 Between the sewing head 10 and the support plate 13 is a sewing area 15 through which the tubular welt 2 advances following a sewing line X-X from the folding unit 9 towards the entrainment means 8 in order to be sewn onto the edge 3 by the needle 12, as will become clearer in the course of the description.
  • the sewing line X-X is parallel to the support plate 13 and passes through the vertical line Z-Z on which the needle 12 lies.
  • the machine 1 Leading into the sewing area 15, the machine 1 includes means 14 known per se such as guides and walls for guiding the tubular welt 2 during its advance along the sewing line X-X.
  • the support plate 13 is basically rectangular and is oriented so as to present a first side parallel to the sewing line X-X at a limited predetermined distance therefrom.
  • the entrainment means 8 for the tubular welt 2 include a pair of contrarotating rollers 17 mounted in bearings in the frame on respective parallel axes of rotation extending in a direction Y-Y perpendicular to the sewing line X-X parallel to the support plate 13. With reference to the direction of advance of the tubular welt 2, the rollers 17 are positioned downstream of the sewing area 15, one above the other close to one side of the support plate 13 running the direction Y-Y to allow the tubular welt 2 leaving the sewing area 15 to pass between them. Via a known type of mechanical drive, not illustrated in the figures, the rollers 17 are turned by the motor of the machine 1 in order to draw the tubular welt 2 from the folding unit 9 and advance it along the sewing line X-X.
  • the unit 7 that feeds the fabric edge 3 includes a flat belt 18 running around a plurality of drive rollers 4 in a closed path that includes a straight portion R parallel to the sewing line X-X and adjacent to the abovementioned first side of the support plate 13 so as to be coplanar with it.
  • the drive rollers 4 of the flat belt 18 are mounted in bearings in the frame of the machine 1 and are turned by the latter's motor in order to advance the flat belt 18 along the abovementioned straight portion R in the same direction in which the tubular welt 2 advances along the sewing line X-X.
  • the folding unit 9 includes parting means for opening up the tubular welt 2 in a direction that is approximately perpendicular to the support plate during its advance and deflecting means for folding the opened tubular welt around the edge before it reaches the sewing area 15.
  • the abovementioned parting means preferably include a fork component 19, over which the tubular welt is fitted and advanced, having a head 16 to which there are connected, by a hinge connection, two rods 20 extending in the direction of advance of the tubular welt 2.
  • a spring 21 fitted to the head 16 acts on the rods 20 of the fork component 19 to push them elastically apart.
  • the fork component 19 is inserted between and held in position between opposing upper and lower pressing and guiding components 22 forming part of the folding unit 9 and arranged symmetrically about the support plate 13.
  • These pressing and guiding components 22 extend in the direction of advance of the tubular welt 2 and diverge from each other in the direction Z-Z perpendicular to the support plate 13, beginning at an entry point of the tubular welt 2 that is located between initial ends 23 of the pressing and guiding components 22.
  • the pressing and guiding components 22 are supported by the frame of the machine 1 in such a way that the angle A at which they are inclined to the support plate 13 can be varied.
  • the fork component 19 is positioned between the pressing and guiding components 22 so that the rods 20 are pushed apart by the spring 21 in the vertical direction Z-Z so that they push against the pressing and guiding components 22 and the head 16 projects from the entry point situated between the initial ends 23 of the pressing and guiding components 22. Consequently in the vertical direction Z-Z, the fork component 19 is positioned with its centre line level with the support plate 13.
  • the head 16 has a larger cross-section than the entry point.
  • the head 16 of the fork component 19 includes rollers 24 mounted so as to rotate about an axis parallel to the direction Y-Y to facilitate the forwarding of the tubular welt 2.
  • each pressing and guiding component 22 comprises at said initial end 23 a collar 25 mounted coaxially on a sleeve 26 that is supported by the frame of the machine 1 parallel to the axis Y-Y.
  • a screw clamp system known per se, is used to fix the collar 25 relative to the sleeve 26 so that, while the machine 1 is in operation, the angle of inclination at which the pressing and guiding component 22 is set relative to the support plate 13 cannot change.
  • Each pressing and guiding component 22 comprises pulleys 27 at each of its ends.
  • the axes of rotation of these pulleys are parallel to the direction Y-Y.
  • Circular-sectioned feed belts 28 run around these pulleys and their purpose is to press against the rods 20 of the fork component 19.
  • the pulley 27 at the initial end 23 of each pressing and guiding component 22 is fixed to the end of a shaft 29 supported coaxially inside the sleeve 26 and turned by the motor of the machine 1 via a mechanical drive which is not illustrated in the figure.
  • the abovementioned deflecting means of the folding unit 9 include a rod 31 supported level with the support plate 13 by the frame of the machine 1 so that its position with respect to the sewing line X-X can be adjusted in the direction Y-Y.
  • This rod 31 acts, parallel to the support plate 13, by means of one end 32 on the centre line of the tubular welt 2 fitted over the fork component 19, causing this tubular welt 2 to fold along the sewing line X-X in such a way as to produce a concavity pointing towards the straight portion R of the flat belt 18.
  • the tubular welt 2 emerging from the folding unit 9 is folded, by the action upon it of the rod 32, around the edge 3 carried by the flat belt 18 (Fig. 6), through the sewing area 15 and advancing along the sewing line X-X. After being sewn it passes between the contrarotating rollers 17 which draw it along.
  • tubular welt 2 Upstream of the folding unit 9 (Fig. 4) the tubular welt 2 is arranged so that its elasticized insert 2a is towards the flat belt 18.
  • the tubular welt 2 is fitted over the fork component 19 in such a way as to pass between the rods 20 and the belts 28 of the pressing and guiding components 22, which are rotated so as to help in forwarding the tubular welt 2.
  • the tubular welt 2 is opened up in the direction perpendicular to the support plate 13.
  • the greater cross-section of the head 16 compared to the entry point situated between the initial ends 23 of the pressing and guiding components 22 prevents the fork component 19 from being drawn along with the tubular welt 2 towards the sewing area 15, while the rollers 24 of the head 16 facilitate the insertion of the tubular welt 2 between the fork component 19 and the pressing and guiding components 22.
  • the elasticized insert 2a advantageously protects the tubular welt 2 from damage should the fork component 19 exert an excessive parting action.
  • the end 32 of the rod 31 acts on the elasticized insert 2a of the tubular welt 2 in order to fold the tubular welt 2 around the edge 3.
  • the elasticized insert 2a is advantageously thinner than the rest of the tubular welt 2 so that the lump formed by the part of the tubular welt 2 folded around the edge 3 is as small as possible.
  • the precision-stitch sewing machine according to the invention satisfies the abovementioned need without having the problems presented by the machines of the prior art.
  • the folding unit of the sewing machine according to the invention is able to fold the tubular welt around the fabric edge with precision, making it possible to produce a quality finish of the welt. It should also be remembered that folding a tubular welt instead of a strip welt around the edge of the fabric produces a firmer structure that is not only easier to control as it is advanced towards the sewing area but also has less tendency to shift out of the sewing line.
  • Another advantage of the precision-stitch sewing machine according to the invention is its adjustability, which enables it to be adjusted to tubular welts of different measurements.
  • the precision-stitch sewing machine is capable of applying tubular welts to edges simply and quickly, while at the same time guaranteeing a high quality of the resulting finish on both sides of the join.
  • a further advantage of the precision-stitch sewing machine according to the invention is that it is structurally and functionally simple, making it reliable in operation.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (7)

  1. Präzisionsstich-Nähmaschine (1) zum Anbringen eines Schlauchsaums (2) entlang einer vorbestimmten Nählinie (X-X) an einer Kante (3) eines gewirkten bzw. gewebten Gewebes oder ähnlichem, des Typs, welcher umfaßt:
    einen Nähbereich (15), in welchem der Schlauchsaum (2) an der Kante (3) angebracht wird,
    eine Tragplatte (13) zum Tragen des Schlauchsaums (2) in dem Nähbereich (15), und
    eine Mitnahmeeinrichtung (8) für den Schlauchsaum (2),
    eine Falteinheit (9), umfassend eine Trenneinrichtung (19) zum Öffnen des Schlauchsaums (2) in einer Richtung (Z-Z), welche etwa lotrecht zu der Tragplatte (13) verläuft, wenn dieser vorrückt, und eine Ablenkeinrichtung (31) zum Falten des geöffneten Schlauchsaums (2) um die Kante (3),
    wobei die Trenneinrichtung ein Gabelelement (19) umfaßt, über welches der Schlauchsaum (2) gelegt und vorgerückt wird, welches zwei Stangen (20) aufweist, welche in der Förderrichtung des Schlauchsaums (2) verlaufen und in der Richtung (Z-Z) auseinanderstrebend verlaufen,
    dadurch gekennzeichnet, daß:
    diese Mitnahmeeinrichtung (8) in der Förderrichtung des Schlauchsaums (2) entlang der Nählinie (X-X) hinter dem Nähbereich (15) angeordnet ist,
    das Gabelelement (19) einen Kopf (16) umfaßt, mit welchem die Stangen (20) durch eine Gelenkverbindung verbunden sind, und
    eine Federeinrichtung (21) auf die Stangen (20) wirkt, um diese in der Richtung (Z-Z) gegen ein oberes und ein unteres Druck- und Führungselement (22), welche gegenüberliegend angeordnet sind, auseinander zu drücken, welche durch die Maschine in einer derartigen Weise gehalten werden, daß der Winkel (A), in welchem diese gegen die Tragplatte (13) geneigt sind, geändert werden kann.
  2. Maschine (1) nach Anspruch 1, wobei die Falteinheit (9) ein oberes und eine unteres Druck- und Führungselement (22), welche gegenüberliegend angeordnet sind, umfaßt, welche von einem Eintrittspunkt des Schlauchsaums (2) ausgehend in der Förderrichtung des Schlauchsaums (2) verlaufen und in der Richtung (Z-Z), welche etwa lotrecht zu der Tragplatte (13) verläuft, auseinanderstrebend verlaufen, wobei das Gabelelement (19) zwischen den Druck- und Führungselementen (22) eingefügt und in Position gehalten wird, wobei der Kopf (16) von dem Eintrittspunkt hervorsteht und der Kopf (16) des Gabelelements (19) einen größeren Querschnitt als der Eintrittspunkt aufweist, um zu verhindern, daß das Gabelelement (19) durch den Schlauchsaum (2) hineingezogen wird, wenn dieser vorrückt.
  3. Maschine (1) nach Anspruch 2, wobei jedes Druck- und Führungselement (22) bei dem Eintrittspunkt ein erstes Ende (23) aufweist, an welchem dieses derart angebracht ist, daß es bezüglich der Tragplatte (13) winkeleinstellbar ist.
  4. Maschine (1) nach Anspruch 2, wobei jedes der gegenüberliegenden Druck- und Führungselemente (22) Zuführbänder (28) umfaßt, welche durch jeweilige Laufrollen (27) umlaufend angetrieben werden, um das Führen des Schlauchsaums (2) über das Gabelelement (19) zu unterstützen.
  5. Maschine (1) nach Anspruch 4, wobei die Stangen (20) des Gabelelements (19) Vertiefungen (30) umfassen, in welche die Bänder eingepaßt sind und darin gleiten.
  6. Maschine (1) nach Anspruch 4, wobei der Kopf (16) der Gabelkomponente (19) Rollen (24) umfaßt, welche in der Lage sind, sich zu drehen, um das Vorrücken des Schlauchsaums (2) durch den Berührbereich mit dem Anfangsende (23) jedes der gegenüberliegenden Druck- und Führungselemente (22) zu unterstützen.
  7. Maschine (1) nach Anspruch 1, wobei die Ablenkeinrichtung eine Stange (31) umfaßt, wovon ein Ende (32) auf den geöffneten Schlauchsaum (2) wirkt, welche parallel zu der Tragplatte (13) verläuft, um den Schlauchsaum (2) um die Kante (3) zu falten.
EP19960830254 1996-05-02 1996-05-02 Präzisionsnähmaschine zum Ansetzen eines schlauchförmigen Bundes an den Rand eines gestrickten oder gewebten Stoffes oder dgl. Expired - Lifetime EP0805228B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1996617397 DE69617397T2 (de) 1996-05-02 1996-05-02 Präzisionsnähmaschine zum Ansetzen eines schlauchförmigen Bundes an den Rand eines gestrickten oder gewebten Stoffes oder dgl.
ES96830254T ES2164860T3 (es) 1996-05-02 1996-05-02 Maquina de coser con puntada de precision para la aplicacion de un ribete tubular a un borde de una tela tejida o de punto o similar.
EP19960830254 EP0805228B1 (de) 1996-05-02 1996-05-02 Präzisionsnähmaschine zum Ansetzen eines schlauchförmigen Bundes an den Rand eines gestrickten oder gewebten Stoffes oder dgl.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19960830254 EP0805228B1 (de) 1996-05-02 1996-05-02 Präzisionsnähmaschine zum Ansetzen eines schlauchförmigen Bundes an den Rand eines gestrickten oder gewebten Stoffes oder dgl.

Publications (2)

Publication Number Publication Date
EP0805228A1 EP0805228A1 (de) 1997-11-05
EP0805228B1 true EP0805228B1 (de) 2001-11-28

Family

ID=8225896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960830254 Expired - Lifetime EP0805228B1 (de) 1996-05-02 1996-05-02 Präzisionsnähmaschine zum Ansetzen eines schlauchförmigen Bundes an den Rand eines gestrickten oder gewebten Stoffes oder dgl.

Country Status (3)

Country Link
EP (1) EP0805228B1 (de)
DE (1) DE69617397T2 (de)
ES (1) ES2164860T3 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1301732B1 (it) * 1998-06-17 2000-07-07 Conti Complett Spa Metodo e bordino per la realizzazione di rimagliature veloci conallineamento perfezionato.
CN113186664B (zh) * 2021-06-30 2021-10-29 南通英伦家纺有限公司 一种用于床上用品套件生产的包边机
KR102620463B1 (ko) * 2022-04-12 2024-01-03 주식회사 픽스로봇 재봉 장치 및 방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1154670A (en) * 1967-09-07 1969-06-11 Rimoldi C Spa Virginio Device for Attachment to a Sewing Machine for Applying Closed Tubular Strappings to Knitwear Articles.
US3811391A (en) * 1973-06-11 1974-05-21 Melco Ind Inc Sewing guide apparatus
IT1159823B (it) * 1983-01-10 1987-03-04 Exacta Spa Macchina cucitrice a punti precisi
IT1270014B (it) * 1994-09-26 1997-04-16 Conti Complett Spa Macchina cucitrice a punti precisi,particolarmente per l'applicazione di bordi in maglia a capi di abbigliamento o simili.

Also Published As

Publication number Publication date
EP0805228A1 (de) 1997-11-05
ES2164860T3 (es) 2002-03-01
DE69617397D1 (de) 2002-01-10
DE69617397T2 (de) 2002-05-08

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