EP0690164B1 - Dispositif de détection de la position de la nappe dans une machine à broder - Google Patents

Dispositif de détection de la position de la nappe dans une machine à broder Download PDF

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Publication number
EP0690164B1
EP0690164B1 EP95107374A EP95107374A EP0690164B1 EP 0690164 B1 EP0690164 B1 EP 0690164B1 EP 95107374 A EP95107374 A EP 95107374A EP 95107374 A EP95107374 A EP 95107374A EP 0690164 B1 EP0690164 B1 EP 0690164B1
Authority
EP
European Patent Office
Prior art keywords
fabric
embroidery
motors
motor
sensors
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
EP95107374A
Other languages
German (de)
English (en)
Other versions
EP0690164A1 (fr
Inventor
Jürg Dr. Dipl. Phys. ETH Henz
Jürg M. Spirk
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.)
OC Oerlikon Textile Holding AG
Original Assignee
Saurer Sticksysteme AG
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Filing date
Publication date
Application filed by Saurer Sticksysteme AG filed Critical Saurer Sticksysteme AG
Publication of EP0690164A1 publication Critical patent/EP0690164A1/fr
Application granted granted Critical
Publication of EP0690164B1 publication Critical patent/EP0690164B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C9/00—Appliances for holding or feeding the base fabric in embroidering machines
    • D05C9/08—Appliances for holding or feeding the base fabric in embroidering machines in machines with horizontal needles
    • D05C9/10—Work holders or carriers
    • D05C9/16—Feeding arrangements therefor

Definitions

  • the invention relates to a device on a Embroidery machine to capture the fabric position of the embroidered fabric according to the preamble of the claim 1.
  • Embroidery machines usually consist of several juxtaposed and parallel, vertical Towers in front of which a number of embroidery needles are arranged are the associated thread guide and corresponding Embroider the specified patterns in a fabric that usually in a vertical plane on the embroidery needles is led past.
  • the fabric is not wound up and unwound at embroidering embroidery needles. As long as the embroidery needles are in the embroidery position and apply embroidery motifs, the winding transport is stopped and the whole Embroidery field is created with the help of appropriate adjustment motors in the vertical plane in any direction shifted this level.
  • the embroidered fabric should now be on the upper fabric shaft wound up and at the same time unprocessed, unembroidered Fabric is unwound from the lower fabric wave.
  • the entire frame is now vertical Moved down to the fabric field in to bring a lower position to at the same time here the needles relative to the material field in an upper one Position.
  • a new embroidery procedure can then be started by holding the frame holding the embroidery field during of the embroidery process moves upwards.
  • the invention intervenes and has the task placed the material transport of the embroidery field on the To control material waves so precisely that the material underneath controlled tensile force wound on the fabric waves can be coordinated with it at the same time controlled vertical movement of the frame takes place.
  • the invention is to achieve the object characterized by the technical teaching of claim 1.
  • An essential feature of the invention is that now Fabric touching or touching next to the embroidery needles is scanned with the help of an encoder that the Mass transport recorded in the vertical direction and this Feeds the signal as a correction signal to a control unit, which regulates the material drive of the material waves, that the fabric is juxtaposed to the embroidery needles relatively not during the mass transport moved more.
  • the material waves driving Winding motors with a constant, unregulated speed work while the frame motor in the sense of present invention is governed in dependence from the fabric position relative to the embroidery needles.
  • the lower material wave over a constant, definable Torque is braked.
  • This braking torque can either act on the material shaft via the motor, oer the material shaft is direct when the motor is decoupled applied with the braking torque.
  • the present invention is therefore no longer based thereon instructed that to make an invisible Transition between the finished embroidered field and the needles in a new embroidery field Stick the fabric in.
  • Another advantage of the invention lies in the rest in the fact that the so-called retensioning of the material over the corresponding rotary drive of the material waves now is much easier and more precise.
  • the material waves usually had to can be controlled by appropriate hand switches, to start with the upper fabric shaft defined train to achieve that the needles straight have not been bent.
  • this train then on the set the upper fabric wave, then the lower fabric wave in the opposite direction to the unwind position can be controlled in rotation to a controlled train to allow on the fabric, also then was optically checked whether the corresponding Reverse drive the lower fabric shaft the needles not bent.
  • Preferred embodiments for such Path sensors are sensors that cover the surface of the fabric touch and especially with a spiked roller touch the fabric to make it slip-free To achieve scanning of the fabric surface.
  • Non-contact sensors optical or capacitive sensors preferred, where a path signal should also be generated.
  • Non-contact sensors can use marking threads or marking marks are scanned on the fabric, to reach such a way position.
  • the second important group of donors are so-called Force or pressure transducers suggested where the tension in the fabric touching or non-contact is measured.
  • a measuring needle assigned to the donor is inserted into the fabric is inserted and the deflection of this measuring needle measured in tension and movement of the fabric and this measurement signal as the correction signal Winding motor is fed.
  • the present invention is not on a fabric frame that can be moved in the vertical plane (Embroidery hoop) is limited, although at Large embroidery machines is common.
  • the invention relates so also all arrangements where oblique or horizontal frames can be used. There are then the corresponding explanations above were given to implement accordingly.
  • the embroidery machine according to Figures 1 and 2 exists essentially a mutual one Spaced apart, parallel to each other arranged vertical towers 1,2, of which the For the sake of simplicity, only tower 1 is described in more detail is after all other towers are built the same.
  • a spindle shaft 3 is rotatable in guides 6 mounted, the spindle shaft 3 via a motor 4 and an associated gear 5 is driven in rotation.
  • a spindle nut 24 is located on the spindle shaft 3 held ( Figure 2), which on a guide frame 7 is attached.
  • the guide frame 7 consists essentially of horizontal and vertical struts (see FIG. 1), a motor 8,14 being arranged in the area of the upper and lower horizontal strut, each rotating a spindle shaft 10,16 via an assigned gear 9,15 drives.
  • a further spindle nut is attached to each spindle shaft 10, 16 (not shown in more detail), which in turn is firmly connected to a so-called shield 11.
  • the shield 11 is thus displaceable in the horizontal direction relative to the guide frame 7.
  • the fabric 17 thus forms an embroidery field 36 in which the Embroidery needles 19 form a needle plane 18.
  • the shield 11 moves during the embroidery process together with the guide frame 7 in the direction of arrow 34 up to the fixed and the corresponding Embroidery needles 19 along which (as known per se) the shield 11 in a vertical plane all directions of this plane on the embroidery needles 19 is moved past.
  • the entire embroidery field 36 thus becomes more vertical Plane in any direction on the fixed Embroidery needles 19 moved past.
  • Encoder 20 uses an incremental encoder that is rotationally fixed is connected to a scanning wheel 21, which with corresponding spines touching the fabric 17 in vertical direction.
  • the encoder 20 with the scanning wheel 21 is slidably arranged on a rail 22 in order to achieve a feed movement to the fabric 17 and thus a gentle scanning of the fabric 17.
  • the encoder 20 is arranged with the scanning wheel 21 in the arrow directions 23 displaceable and lockable on a rail 22.
  • Such a regulation is shown in FIG. 3, for example shown, assuming that the frame drive of the shield 11 associated motor 4 with constant speed under the action of a setpoint is driven.
  • the fabric position 28 is determined by the transmitter 20 according to FIG 3 detected, and as soon as this a material movement along the fabric position 28 detected, this signal is about the line 29 is fed as an actual value to a comparator 30.
  • Comparator 30 also supplied a target value, so that the comparator 30 forms a correction signal which fed via line 33 to a control unit 31 becomes.
  • This control unit 31 calculates a corresponding one Drive signal via line 32 for the winding motor 13, which is more or less driven accordingly is or is stopped or operated in reverse.
  • the drive takes care of the winding motor 13 that the fabric position 28 compared to the Embroidery needles 19 remains unchanged.
  • the frame motor 4 can also be regulated and the two winding motors to drive the Material waves 12.38 driven at constant speed will.
  • Winding motor e.g. B. the winding motor 13 for driving the upper material shaft 12 at a constant speed be driven while the lower winding motor is regulated to drive the material shaft 38, as well like the motor 4 for the vertical drive of the guide frame 7 and the shield 11.
  • each tower 1, 2 can have such an encoder 20 can be assigned.

Landscapes

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

Claims (8)

  1. Dispositif sur une machine à broder pour détecter la position du tissu, le tissu étant fixé sur des arbres à tissu qui sont montés dans un ou plusieurs châssis de guidage, et se déplaçant pendant la broderie alors que les arbres à tissu sont immobiles, tandis que le châssis de guidage est ramené de la position de fin de broderie et de la position de début de broderie alors que les arbres à tissu tournent, caractérisé en ce qu'un ou plusieurs capteurs (20) détectent le mouvement du tissu pendant le retour par rapport aux aiguilles à broder (19), et une régulation coordonne les mécanismes d'entraínement des moteurs (4, 8, 13, 14) déplaçant le tissu (17) de telle sorte qu'il n'y ait pas de déplacement du tissu par rapport aux aiguilles à broder (19).
  2. Dispositif selon la revendication 1, caractérisé en ce que la vitesse du ou des moteurs (4) qui entraínent le châssis de guidage (7) est prédéfinie et la vitesse des moteurs (13) qui entraínent les arbres à tissu (12, 38) est réglée en fonction de la vitesse du tissu mesurée par le ou les capteurs (20), ou la régulation se fait en sens inverse.
  3. Dispositif selon la revendication 1, caractérisé en ce que le ou les moteurs (4) prévus pour déplacer le châssis de guidage (7) et les moteurs (13) prévus pour déplacer les arbres à tissu (12, 38) sont conçus pour pouvoir être réglés en fonction de la valeur de mesure du ou des capteurs (20).
  4. Dispositif selon la revendication 1, caractérisé en ce que la vitesse de l'un des moteurs (13) prévu pour l'un des arbres à tissu (12, 38) est prédéfinie et la vitesse pour le second moteur (13) prévu pour le second arbre à tissu (12, 38) est réglée en fonction de la valeur de mesure du ou des capteurs (20) et en fonction de la vitesse du ou des moteurs (4) du châssis de guidage (7).
  5. Dispositif selon la revendication 1, caractérisé en ce qu'un freinage de l'arbre à tissu inférieur (38) a lieu sous la forme d'un moment de freinage constant et réglable qui agit soit sur le moteur (13), soit, quand le moteur (3) est désaccouplé, sur l'arbre à tissu (38).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce qu'il est prévu des capteurs (20) sans ou avec contact.
  7. Dispositif selon la revendication 6, caractérisé en ce que les capteurs (20) sont conçus comme un cylindre à pointes, une aiguille de mesure ou des capteurs optiques ou capacitifs.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que pour le réglage de la vitesse des moteurs réglés respectifs (4, 13), la tension du tissu (17) est également détectée par l'intermédiaire du ou des capteurs (20) et intégrée au réglage.
EP95107374A 1994-06-30 1995-05-16 Dispositif de détection de la position de la nappe dans une machine à broder Expired - Lifetime EP0690164B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4422903A DE4422903A1 (de) 1994-06-30 1994-06-30 Vorrichtung an einer Stickmaschine zur Erfassung der Stoffposition
DE4422903 1994-06-30

Publications (2)

Publication Number Publication Date
EP0690164A1 EP0690164A1 (fr) 1996-01-03
EP0690164B1 true EP0690164B1 (fr) 1998-01-14

Family

ID=6521897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107374A Expired - Lifetime EP0690164B1 (fr) 1994-06-30 1995-05-16 Dispositif de détection de la position de la nappe dans une machine à broder

Country Status (3)

Country Link
EP (1) EP0690164B1 (fr)
AT (1) ATE162239T1 (fr)
DE (2) DE4422903A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019112525A1 (fr) * 2017-12-05 2019-06-13 Eraydin Tamer Appareil de support de tissu mobile pour machine à broder
EP3643828B1 (fr) 2018-10-04 2021-08-11 Lässer AG Machine à broder et procédé de transfert du fond de broderie sur les aiguilles retenant le fond pendant le laminage

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649065A (en) * 1948-12-07 1953-08-18 Electrotext Corp Embroidery machine and coded-tape control means
DE1485482B1 (de) * 1961-01-17 1970-11-19 Zangs Ag Maschf Verfahren zum Umsetzen des Stickrahmens um den Laengsrapport
DE1485519A1 (de) * 1961-10-14 1969-06-19 Zangs Ag Maschf Vorrichtung zum Umsetzen eines in einem Stickrahmen einer Stickmaschine bestickten Stoffeldes einer Stoffbahn
US3354850A (en) * 1965-08-25 1967-11-28 Wayne G Story Feed control mechanism for quilting machine arrangement
FR2082391A5 (en) * 1970-03-13 1971-12-10 Roubane Ets Pique/embroidery machine - with multiple needles and able to make closed designs
DE2130689A1 (de) * 1971-06-21 1973-01-11 August Lepper Maschinen U Appb Flaechenstickmaschine mit automatischer schussfadenausrichtung
US3960095A (en) * 1975-03-14 1976-06-01 Story Wayne G Automatic quilting machine
FR2326528A1 (fr) * 1975-10-02 1977-04-29 Roubane Ets Machine a aiguilles multiples perfectionnee
BE837165A (fr) * 1975-12-29 1976-04-16 Waron Belgium Sa Deroulement d'une toile textile sur un metier a broder
US4688498A (en) * 1987-01-12 1987-08-25 Conrad Industries, Inc. Apparatus and method for detecting position of embroidery machine after power failure
DE3707009C1 (en) * 1987-03-05 1988-07-28 Wittig G Sewing unit for the automatic machining of a sheet-like structure made of flexible material
US4955305A (en) * 1988-09-23 1990-09-11 Melco Industries, Inc. Modular system for use with X-Y peripherals

Also Published As

Publication number Publication date
ATE162239T1 (de) 1998-01-15
DE4422903A1 (de) 1996-01-11
EP0690164A1 (fr) 1996-01-03
DE59501259D1 (de) 1998-02-19

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