EP0720670B1 - Machine a broder ou a coudre - Google Patents

Machine a broder ou a coudre Download PDF

Info

Publication number
EP0720670B1
EP0720670B1 EP94926787A EP94926787A EP0720670B1 EP 0720670 B1 EP0720670 B1 EP 0720670B1 EP 94926787 A EP94926787 A EP 94926787A EP 94926787 A EP94926787 A EP 94926787A EP 0720670 B1 EP0720670 B1 EP 0720670B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
machine according
feed plate
slide
needle
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
EP94926787A
Other languages
German (de)
English (en)
Other versions
EP0720670A1 (fr
Inventor
Thomas Seitz
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.)
SEITZ, THOMAS
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0720670A1 publication Critical patent/EP0720670A1/fr
Application granted granted Critical
Publication of EP0720670B1 publication Critical patent/EP0720670B1/fr
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
    • D05B73/00—Casings
    • D05B73/04—Lower casings
    • D05B73/12—Slides; Needle plates

Definitions

  • the invention relates to an embroidery or sewing machine, especially on a cylinder bed or stick Sewing machine, according to the preamble of claim 1.
  • a corresponding flat bed machine is essential already known from NL-C-90 278.
  • a throat plate is provided in the machine Tap hole for the machine needle is formed, wherein a sleeve is arranged in the throat plate, in which the Tap hole is formed and in its longitudinal axis direction between a sunken and a protruding one Position is movable.
  • a sleeve is arranged in the throat plate, in which the Tap hole is formed and in its longitudinal axis direction between a sunken and a protruding one Position is movable.
  • Cylinder bed machines have a sewing field in the X-Y direction on. In order to use such machines economically, If possible, several parts in one sewing material holder placed. The parts are then in a sewing cycle started. With the last stitch, the sewing thread cut off. In the prior art, however, this is not possible.
  • the bottom of the sleeve in its protruding upwards Position and the underside of the throat plate and the Slider in one plane. There is on the bottom of the Throat plate no disturbing, protruding from the plane Parts.
  • the thread cutter can function properly To run.
  • Needle plate With embroidery or sewing machines is usually on the work table below the needle one Needle plate, which can be replaced if necessary and contains a tap hole. The one on its downstroke can pass through the sewing or embroidery material enter this tap hole so that the needle is not damaged becomes.
  • two-needle sewing machines of course two correspondingly arranged stitch holes or a correspondingly elongated tap hole in the Stitch plate may be provided. Even if only in the following should be a tap hole or a needle, this is of course also the case of several needles or several stitch holes.
  • the printout should not be in the following include only sewing material, but also embroidery and the like) well and being able to hold and lead tightly, it is often in clamped a material holder, the lower part of lies on the work surface of the sewing or embroidery machine.
  • the material to be sewn is held on a level that is somewhat is above the level of the work surface and a distance to have this of, for example, one millimeter can.
  • this distance between the material and the work surface to impair the stitch quality and possibly also lead to seam runs, since the Sewing material is not stable when the needle enters and passes through rests or is held. Especially when topstitching at a short distance from the edge, i.e.
  • the invention has for its object to provide an embroidery or to create a sewing machine that has the possibility of achieving good stitch quality even at a distance from the work surface held sewing material offers.
  • the tap hole is arranged in a movable sleeve, which in one across the plane of the throat plate, i.e. of the Work surface protruding position is relocatable.
  • the taphole sleeve brings this protruding position a number of advantages.
  • the top serves the needle hole sleeve as a counter holder for the sewing material, so that this passes through when the needle passes cannot move the sewing material or only insignificantly. Unwanted displacements of the seam courses are therefore switched off.
  • the above tap hole sleeve causes also an improved needle guide, since this is immediate after passing through the sewing material into the taphole sleeve can occur and is guided by this, so that unwanted lateral needle movements more reliably switched off be than in the plane of the throat plate taphole would be the case. This too contributes to the improvement of the seam course and also to Reduction of the risk of needle breakage.
  • the Omitting the tap hole is reduced to a minimum.
  • the invention thus enables high stitch quality achieve with the sewing material and also a short-edged stitching with a small distance to the side margin with high precision and perform quality.
  • the tap hole sleeve can a distance that is the usual base plate height corresponds to a material holder, for example 1 to 2 mm.
  • the invention is particularly for cylinder bed sewing machines excellently suited, with or without Thread cutting device.
  • the invention is and embroidery machines can be used that control NC, CNC or DNC or can also be curve-controlled.
  • the stitch types in which the invention is particularly advantageous is counted single chain stitch (moss stitch), double lockstitch or double chain stitch, etc., the above Listing is by no means complete.
  • the invention can also be used in flat bed machines, in particular for chain stitch.
  • sewing material for example, fine leather goods, textiles, shoes etc.
  • the tap hole sleeve when working without The fabric holder is continuously recessed in the throat plate hold such that their surface is flush with the throat plate surface ends flush.
  • the tap hole sleeve permanently be moved to their previous position and remain there during the entire sewing process.
  • the tap hole sleeve is synchronized with the Presser foot and thus driven with the needle movement, and in particular in such a way that they are their farthest extended position at or shortly before the Needle tip reached in the material, i.e. then when the needle moving downward at a distance of, for example 0.5 to 1 mm above the top edge level of the fully extended tap hole sleeve.
  • the Taphole sleeve sunk again, so that no problems during the subsequent transport of the sewing material and / or the Material holder can occur. This process can be Repeat synchronously with each needle movement.
  • this is preferably with a drive device coupled by which they switch between their one and extended position is shiftable.
  • This drive device can preferably directly with the presser foot drive be coupled and controlled by this.
  • the movement of the tap hole sleeve in its axial direction can in a preferred manner by one across reach their movable axis slide, the preferably arranged on the underside of the throat plate is.
  • the components necessary for adjusting the tap hole sleeve are therefore below the needle plate and are covered by this, so that the work surface is not affected by drive components.
  • When using such a slide can also be extremely achieve low overall height, so that the thickness of the invention designed throat plate with stitch hole sleeve and actuating slide must not be larger than that of a conventional stitch plate.
  • a very simple and effective implementation of a Longitudinal movement of the slide in an axial movement of the Tap hole sleeve can be formed by forming an inclined surface reach on the slider with the bottom or a ring shoulder of the sleeve cooperates.
  • the same Effect can be equivalent even when training Sloping surface on the sleeve and a corresponding actuating surface achieve on the slide.
  • the front section of the slider fork-shaped it is advantageous the front section of the slider fork-shaped to design so that he is the ring shoulder of the sleeve can reach under symmetrically on both sides.
  • the slide is an exclusive exerts axially directed force on the sleeve.
  • the slide is in one Channel guided on the underside of the throat plate.
  • the Slider is then at least partially or preferably completely embedded in the underside of the throat plate, see above that their overall height is not increased and this in simpler Way in place of previously customary needle plates without Tap hole sleeve and slide can be installed.
  • the channel will also be a side guide of the slide ensures that this pure longitudinal movements in its axial direction.
  • the tap hole sleeve move to their extended position in the long term can or leave them in their sunken position can be a purely manual access to the slide are enough so that this by hand in one or the other Position can be moved.
  • the slide is preferably with a corresponding, from the presser foot drive or other control components controlled drive device connected.
  • the drive device for the slide works preferably pneumatic, mechanical or electromagnetic.
  • the construction according to the invention can be so flat be built that even a known thread cutting device easily in a known manner below the throat plate can be provided, the Slider preferably between the underside of the throat plate (or in the lower channel) and the thread cutting device is arranged.
  • the return of the tap hole sleeve into its countersunk Position can be done in the simplest way by its own weight be effected.
  • the sleeve circumference and / or the corresponding one Have mounting hole in the throat plate preferably such low surface roughness, for example achieved by a lapping process that the frictional forces are very low, and by pressure from the moving Template.
  • the resetting of the sleeve can also be achieved in this way be that for example by a spring is biased into its lowered position.
  • a spring is biased into its lowered position.
  • bevels of the slider with bevels of the Interact sleeve so that the sleeve when moving the Slider extended in one direction and when moving in the opposite direction to the sunken position is reduced.
  • the upper edge of the sleeve rounded so that no risk of damage to the Sewing material during a relative movement between the top edge of the sleeve and the material to be sewn. Because of this rounding the top edge of the sleeve is also achieved that the needle without risk of damage in the rounded inner edge provided recess of the sleeve are inserted can.
  • the sleeve can also be activated by coupling with the presser foot or synchronized with its drive. Alternatively, the sleeve can also be activated via a corresponding control program freely with the desired movement sequence can be programmed.
  • the provision of the sleeve in their sunken position also positively controlled with the help of a own or with an existing machine drive device coupled drive device for pneumatic, electromagnetic or mechanical type.
  • the invention is not embodied only in the embroidery and / or sewing machines as a whole, but is also in the needle plate according to the invention as embodied such.
  • FIGS. 1 and 2 serve for schematic illustration the basic design of the throat plate with movable sleeve and its movement control.
  • a Throat plate 1 only partially in FIGS. 1 and 2 is shown with a circular through hole 2 provided.
  • a sleeve 3 is in the through hole 2 slidably arranged, the cylindrical shape has and in the middle a tap hole 4 for entry a needle, not shown, of an embroidery or Owns sewing machine.
  • the diameter of the sleeve 3 corresponds essentially the diameter of the through hole 2, the sleeve 3 with very little friction in the through hole 2 is movable.
  • Fig. 1 the sleeve 3 is in its extended upward Position shown in which its upper edge by approx. 1 mm protrudes above the surface of the needle plate 1.
  • the Extending movement of the sleeve 3 is shown schematically by a shown slide 5 causes, on its the sleeve 3 facing front has an inclined surface 6.
  • the slide 5 moves and presses under the lower edge of the sleeve 3 thus in their extended position.
  • the sleeve 3 and / or the needle plate 1 one Stop by which the extension movement of the sleeve 3rd to the desired maximum value of, for example 1 mm is limited.
  • the kinetic energy required to drive the slide 5 is by a drive, not shown provided, for example, coupled to the presser foot and is thus driven synchronously with it.
  • the entire needle plate 1 in from below seen view shown.
  • the needle plate 1 has holes 7 on its circumference, with which they can be screwed onto the bed of the cylinder bed sewing machine is.
  • a thread cutting device in the usual way attached in the form of a knife 8.
  • a Catcher 9 available.
  • a inclined channel 10 incorporated as the slide channel serves and on the one hand up to the outer edge of the Slider plate is guided and on the other hand into the Range of the sleeve 3 and beyond is sufficient.
  • the slide for actuating the sleeve 3 in this way be introduced that he neither with the knife 8 nor collides with the catcher 9.
  • the depth of the channel 10 is designed to match the thickness of the slider corresponds, so that this is not opposite the needle plate underside protrudes.
  • the sleeve 3 can be inserted directly into the needle plate 1 be or movable in an insert 11 be arranged, which has a circular shape and finally flush with the surface of the needle plate 1 inserted into this and screwed to it, for example is.
  • Such needle plate inserts 11 are in themselves (without sleeve 3) known and contain the tap hole. At however, they contain the configuration according to the invention additionally the sleeve 3 surrounding the tap hole.
  • a slider 12 is fork-shaped at its front end trained and encompasses a corresponding with this fork Contact surface of a tap hole sleeve 14.
  • the at the Representation in Fig. 4 one behind the other and thus have fork-shaped sections not recognizable as such a sloping section on its top 13 to slide the tap hole sleeve 14 into the to move to the extended position.
  • the tap hole sleeve 14 engages around the slide 12 the tap hole sleeve 14 on its circumference, i.e. works not together with the bottom of the needle hole sleeve.
  • the slide 12 can be driven in the same way, as explained above using the slider 5 has been.

Landscapes

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

Claims (13)

  1. Machine à broder ou à coudre, en particulier machine à broder ou à coudre à cylindre avec un plateau à aiguille (1) pourvu d'un trou pour le passage de l'aiguille, dans lequel est disposée une douille (3), (4) comportant le trou (4) proprement dit pour le passage de l'aiguille et déplaçable en direction longitudinale entre, d'une part, une position basse dans laquelle son chant supérieur tourné vers l'aiguille se trouve sensiblement dans le plan de la surface de la plaque à aiguille (1) et, d'autre part, une position saillante dans laquelle son chant supérieur dépasse la surface de la plaque à aiguille (1) caractérisée en ce que la face inférieure de la plaque à aiguille (1) comporte un coulisseau (5), 12) déplaçable perpendiculairement à l'axe de la douille, couplé avec la douille (3), (14) de telle sorte que cette dernière se déplace axialement à la suite du mouvement dudit coulisseau.
  2. Machine selon la revendication 1 caractérisée en ce que la douille (3), (14) est déplaçable vers le haut et vers le bas de manière synchrone avec le mouvement de l'aiguille et/ou du pied de biche.
  3. Machine selon les revendications 1 ou 2 caractérisée en ce que la douille (3), (14) est couplée avec un dispositif d'entraínement (5), (12) qui provoque son mouvement vers le haut et vers le bas.
  4. Machine selon l'une des revendications 1 à 3 caractérisée en ce que le coulisseau (5), (12) comporte une surface biseautée (6), (13) qui est au contact de la face inférieure ou de l'épaulement annulaire de la douille (3), (14).
  5. Machine selon les revendications 3 ou 4 caractérisée en ce que la face inférieure de la plaque à aiguille comporte une rainure (10) dans laquelle se déplace le coulisseau (5), (12).
  6. Machine selon l'une des revendications 3 à 5 caractérisée en ce que le coulisseau (5), (12) est relié à un dispositif d'entraínement commandé par le dispositif de commande de la machine à broder ou à coudre.
  7. Machine selon la revendication 6 caractérisée en ce que le dispositif d'entraínement est constitué d'une commande pneumatique, mécanique ou électromagnétique.
  8. Machine selon l'une des revendications 3 à 7 caractérisée par un coupe-fil (8) disposé sous la plaque à aiguille et en ce que le coulisseau (5), (12) est disposé entre la plaque à aiguille (1) et le coupe-fil (8).
  9. Machine selon l'une des revendications précédentes caractérisée en ce que la douille (3), (14) est guidée dans la plaque à aiguille (1).
  10. Machine selon l'une des revendications précédentes caractérisée en ce que le guidage de la douille dans la plaque à aiguille (1) implique un frottement suffisamment faible pour que la douille retourne sous son propre poids dans sa position basse.
  11. Machine selon l'une des revendications précédentes caractérisée en ce que la douille (3), (14) est reliée à un dispositif d'entraínement qui provoque son retour dans la position basse.
  12. Machine selon l'une des revendications précédentes caractérisée en ce que le chant supérieur de la douille (3), (14) est arrondi.
  13. Machine selon l'une des revendications précédentes caractérisée en ce que la douille (3), (14) est guidée dans un trou traversant (2) de la plaque à aiguille (1) et en ce que sa surface extérieure et/ou la paroi du trou traversant sont rodées, respectivement présentent une faible rugosité.
EP94926787A 1993-09-17 1994-09-16 Machine a broder ou a coudre Expired - Lifetime EP0720670B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9314099U 1993-09-17
DE9314099U DE9314099U1 (de) 1993-09-17 1993-09-17 Stick- oder Nähmaschine, insbesondere Zylinderbett-Nähmaschine und Riegelautomat
PCT/DE1994/001070 WO1995008015A1 (fr) 1993-09-17 1994-09-16 Machine a broder ou a coudre

Publications (2)

Publication Number Publication Date
EP0720670A1 EP0720670A1 (fr) 1996-07-10
EP0720670B1 true EP0720670B1 (fr) 1998-12-09

Family

ID=6898245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94926787A Expired - Lifetime EP0720670B1 (fr) 1993-09-17 1994-09-16 Machine a broder ou a coudre

Country Status (6)

Country Link
EP (1) EP0720670B1 (fr)
JP (1) JP3556671B2 (fr)
AT (1) ATE174392T1 (fr)
AU (1) AU7650894A (fr)
DE (2) DE9314099U1 (fr)
WO (1) WO1995008015A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016110156B4 (de) * 2016-06-01 2019-12-19 Technische Universität Dresden Nähvorrichtung und Verfahren zur Herstellung eines vernähten Mehrschichtaufbaus, Mehrnadelsteppanlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL90278C (fr) * 1900-01-01
DE1660928C3 (de) * 1968-03-12 1974-04-04 Kochs Adler Ag, 4800 Bielefeld Stichplatte für Nähmaschinen
DE8112837U1 (de) * 1981-04-30 1981-09-17 Maschinenfabrik Carl Zangs Ag, 4150 Krefeld Stickmaschine
JPH0736873B2 (ja) * 1988-01-22 1995-04-26 蛇の目ミシン工業株式会社 ジグザグミシンの針穴案内装置
DE9011178U1 (de) * 1990-07-30 1990-10-04 Dürkopp Adler AG, 4800 Bielefeld Einnadel- oder Mehrnadel-Nähmaschine mit einer Nähgut-Transportvorrichtung

Also Published As

Publication number Publication date
WO1995008015A1 (fr) 1995-03-23
JPH09502625A (ja) 1997-03-18
DE9314099U1 (de) 1993-12-23
AU7650894A (en) 1995-04-03
EP0720670A1 (fr) 1996-07-10
JP3556671B2 (ja) 2004-08-18
ATE174392T1 (de) 1998-12-15
DE59407459D1 (de) 1999-01-21

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