EP0536090A2 - Vorrichtung zum In- und Ausserbetriebsetzen von Nadel- und Vorlochnadelstangen für eine Stickmaschine - Google Patents

Vorrichtung zum In- und Ausserbetriebsetzen von Nadel- und Vorlochnadelstangen für eine Stickmaschine Download PDF

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Publication number
EP0536090A2
EP0536090A2 EP92830510A EP92830510A EP0536090A2 EP 0536090 A2 EP0536090 A2 EP 0536090A2 EP 92830510 A EP92830510 A EP 92830510A EP 92830510 A EP92830510 A EP 92830510A EP 0536090 A2 EP0536090 A2 EP 0536090A2
Authority
EP
European Patent Office
Prior art keywords
bars
lever
slider
bar
disengagement
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.)
Granted
Application number
EP92830510A
Other languages
English (en)
French (fr)
Other versions
EP0536090A3 (de
EP0536090B1 (de
Inventor
Victor Czyz
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.)
Comerio Ercole SpA
Original Assignee
Comerio Ercole SpA
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 Comerio Ercole SpA filed Critical Comerio Ercole SpA
Publication of EP0536090A2 publication Critical patent/EP0536090A2/de
Publication of EP0536090A3 publication Critical patent/EP0536090A3/de
Application granted granted Critical
Publication of EP0536090B1 publication Critical patent/EP0536090B1/de
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
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/16—Arrangements for repeating thread patterns or for changing threads

Definitions

  • the present invention relates to a device for enabling and disabling the needle bars and the piercer bars according to a predetermined program in an embroidery machine and particularly it offers improvements with respect to both the restaurant patent Nr. 1.153.643 filed on November 5, 1992 and the European Patent Application Nr. 0230.211 filed on June 6, 1986, the two both by the applicant of the present patent application.
  • the device forming the object of the present invention comprises a series of needle bars suitable to be enabled and disabled according to a certain program with the same arrangement of the structure described in the above cited facility patent, but representing an improvement thereof as in the present invention piercer bars are also provided having means for enabling and disabling the bars themselves indipendently from the means for enabling and disabling the needle bars.
  • the present invention represents an improvement also with respect to the above cited European Patent Application as, while in the latter two different operating means are provided for enabling and disabling the needle bars and the piercer bars, in the present invention a single operating means is advantageously provided for enabling and disabling the needles and the piercers.
  • an oscillating drive bar 1 according to the prior art relative to the embroidery machines, shifts to and fro on a horizontal plan according to the double arrow X.
  • Said bar 1 is connected to either the needle bars 2 or the piercer bars 3 through connecting means to be described hereinafter.
  • the drawings show only one needle bar and a corresponding piercer bar, both said bars being a part of a so called rapport, even if such machines comprise a plurality of needle bars and the same number of piercer bars.
  • Said connecting means consists of two hooks 4 and 5, respectively for a needle bar 2 and for a piercer bar 3.
  • a slider 6 is fixed on the needle bar 2 and surrounds the stationary shaft 7 while a slider 8 is fixed on the corresponding piercer bar 3.
  • the hooks 4 and 5 are pivoted respectively through pins 9 and 10 around which small springs 11 and 12 are wound tending to cause the downward rotation of said hooks 4 and 5, as wholly shown in fig. 3.
  • a body 13 is fixed, while being provided with holes through which the needle bars 2 or the piercer bars 3 slide, when these are alternatively connected to the oscillating drive bar 1.
  • a cap 15 is fixed, by means of screws, below which an actuating member 16 can be moved, e.g. through a pneumatic piston not shown in the drawing, while being provided with slots 17 in which pawls 18 having projections 19 and 19' are inserted.
  • one pawl is provided for each rapport consisting of a needle bar 2 and a corresponding piercer bar 3, and that the actuating member 16 is one and only for the whole machine and it can be shifted in two positions corresponding to the tiltings of the pawls according to the axes a and b , as shown in Fig.4.
  • two small blocks 20 and 21 are placed, in turn respectively above the hooks 4 and 5.
  • the single drive bar 16 causes, in one position, the enabling of all the needle bars and the disabling of all the piercer bars and, in the other position, it causes the enabling of all the piercer bars and the disabling of all the needle bars.
  • a slider 22 is provided, combined with each pair of small blocks 20 and 21, having its upper part inserted between the two small blocks 20,21 and actuated in its lower part by a resetting bar 23 which is moved both upwards and downwards, e.g. by means of a pneumatic piston not represented in the drawing.
  • Said resetting bar 23 is connected to the various sliders 22 by an elastic member 24.
  • two springs 25 are provided for each small block 20,21; such springs tend to push upwards the slider and the small blocks of each rapport.
  • a selecting lever 26 is provided which is pivoted at 26' and keeping lowered, in the position of Fig.2, both the corresponding sliders 22 and the small blocks 20,21 as well as keeping raised the hooks 4 and 5 which thus result disengaged from the oscillating drive bar 1.
  • Such a position of the selecting levers 26 is obtained by lowering the resetting bar 23 thus causing the slider 22 to lower from the position represented in dashed line to the one represented in unbroken line of the upper end of the slider itself, so that said selecting levers 26 are pushed by the springs 27 in said position of disengagement.
  • the selecting levers 26 are provided with a projection 28 as well as the sliders 22 are provided with a projection 29 so that when the sliders 22 lower, by means of the resetting bar 23, from the position represented in unbroken line in Fig.2, the selecting levers 26 move to the position represented in dashed line in the same drawing and are held by magnets 30, if excited, each of them being placed in correspondence with a selecting lever 26.
  • there are both excited magnets 30 and non-excited others so that the excited ones hold the corresponding selecting levers 26, while the non-excited ones allow the corresponding selecting levers 26 to return, as being pushed by the corresponding springs 27, in the position of disengagement.
  • the oscillating bar 1 depending on the presetting thereof to cause the operation of either the needle bars or the piercer bars, moves according to motion laws different from each other and proper for each of these movements which are selectable upstream of the above described device.
  • the hooks 4 and 5 have an internal outline, which reaches the oscillating drive bar 1, shaped according to a plane, whereby it slides along the protruding part of said bar 1 without any wear of the touching parts.
  • a rod 31 is fixed which passes through a narrow opening 32, acting as a pivot, obtained in a hub 33.
  • the rod 31 is pivoted at 34 on a middle lever 35 which is the counterpart of a roller supporting lever 36 in turn pivoted at 37 inside said lever 35.
  • a roller 36' on which the yarn feeding each needle bar is wound, is freely rotatable around a pin 38 of the lever 36 and is integral with a gear 39 which in turn engages with another gear 40 on whose axis a braking means is mounted, not shown in the drawing, common to all the needle bars.
  • the middle lever 35 thereby rotating upwards, pulls with its edge 41 the roller supporting lever 36 so that the gear 39 moves thus disengaging from the gear 40.
  • the yarn winding roller 36' stops, thereby interrupting the yarn feeding to the disengaged needle bar 2, which corresponds to said lever 26 in the position of disengagement.
  • an upward releasing of the sliders 22, which corresponds to an enabling of the needle bars, involves an anticlockwise rotation of the middle lever 35 on the pivot 37, this being caused by the lowering of the pivot 34 and the consequent coupling of the gears 39 and 40.
  • the above described mechanism allows a manual free rotation of the roller supporting lever 36 on the pivot 37 from a position I to a position II in order to facilitate the threading of the yarn in the machine.
  • the edge 42 of the lever 36 touches the corner 43 of the middle lever 35 thus causing a clockwise rotation of the middle lever 35 itself on the pivot 37 with a consequent upward shifting of the pivot 34 and disengagement of the corresponding needle bar by means of the slider 22 which, being pushed by the end of the rod 31 opposite to the pivot 34, reaches the position of disengagement.
  • a subsequent manual enabling of the needle bar occurs by manually operating the selecting lever 26, thus causing it to reach the enabling position in which it touches the corresponding magnet.
  • the advantages of this invention are the following: improved simplicity and savings both in the realization and operation thereof, mainly due to the fact that the needle bars and the piercer bars are actuated by a single means, and to the fact that the actuating means of the selecting levers, e.g. consisting of magnets, are stationary and each of them for one selecting lever.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Automatic Embroidering For Embroidered Or Tufted Products (AREA)
EP92830510A 1991-09-23 1992-09-22 Vorrichtung zum In- und Ausserbetriebsetzen von Nadel- und Vorlochnadelstangen für eine Stickmaschine Expired - Lifetime EP0536090B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI912526 1991-09-23
ITMI912526A IT1251850B (it) 1991-09-23 1991-09-23 Dispositivo per l'innesto e il disinnesto delle barre degli aghi e delle barre dei perforatori in una macchina ricamatrice

Publications (3)

Publication Number Publication Date
EP0536090A2 true EP0536090A2 (de) 1993-04-07
EP0536090A3 EP0536090A3 (de) 1993-05-12
EP0536090B1 EP0536090B1 (de) 1996-05-29

Family

ID=11360741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92830510A Expired - Lifetime EP0536090B1 (de) 1991-09-23 1992-09-22 Vorrichtung zum In- und Ausserbetriebsetzen von Nadel- und Vorlochnadelstangen für eine Stickmaschine

Country Status (5)

Country Link
EP (1) EP0536090B1 (de)
JP (1) JPH05195409A (de)
AT (1) ATE138700T1 (de)
DE (1) DE69211085T2 (de)
IT (1) IT1251850B (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541359C2 (de) * 1975-09-17 1984-02-02 Maschinenfabrik Carl Zangs Ag, 4150 Krefeld Stickmaschine
IT1062146B (it) * 1976-07-28 1983-06-25 Comerio Ercole Spa Perfezionamenti relativi ad una macchina ricamatrice a telaio tipo plauen o simili
AT395728B (de) * 1982-03-29 1993-02-25 August Heinzle Schiffchenstickmaschine
CH662140A5 (de) * 1983-10-06 1987-09-15 Saurer Ag Adolph Stickmaschine.
IT1188284B (it) * 1986-01-21 1988-01-07 Comercio Ercole Spa Dispositivo per l'attivazione e disattivazione di barre porta-ago e barre porta-perforatore secondo un programma preimpostabile,particolarmente in una macchina ricamatrice a navetta

Also Published As

Publication number Publication date
EP0536090A3 (de) 1993-05-12
EP0536090B1 (de) 1996-05-29
ITMI912526A0 (it) 1991-09-23
JPH05195409A (ja) 1993-08-03
DE69211085T2 (de) 1996-10-02
ITMI912526A1 (it) 1993-03-23
ATE138700T1 (de) 1996-06-15
DE69211085D1 (de) 1996-07-04
IT1251850B (it) 1995-05-26

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