EP0756031A2 - Dispositif guide fil pour machine à broder schiffli - Google Patents

Dispositif guide fil pour machine à broder schiffli Download PDF

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Publication number
EP0756031A2
EP0756031A2 EP96810466A EP96810466A EP0756031A2 EP 0756031 A2 EP0756031 A2 EP 0756031A2 EP 96810466 A EP96810466 A EP 96810466A EP 96810466 A EP96810466 A EP 96810466A EP 0756031 A2 EP0756031 A2 EP 0756031A2
Authority
EP
European Patent Office
Prior art keywords
thread
movement
guide
small
thread guide
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
EP96810466A
Other languages
German (de)
English (en)
Other versions
EP0756031A3 (fr
EP0756031B1 (fr
Inventor
Franz Lässer
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.)
Franz Laesser AG
Original Assignee
Franz Laesser AG
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 Franz Laesser AG filed Critical Franz Laesser AG
Publication of EP0756031A2 publication Critical patent/EP0756031A2/fr
Publication of EP0756031A3 publication Critical patent/EP0756031A3/fr
Application granted granted Critical
Publication of EP0756031B1 publication Critical patent/EP0756031B1/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
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/08—Thread-tensioning arrangements
    • D05C11/10—Guides, e.g. resilient

Definitions

  • the invention relates to a thread guide device for a Schifflistickmaschine, with a small and a large thread guide for the front thread leading from the bobbin to the needle, a first control element which serves for the movement of the large thread guide, and a second control element with which the strength of the thread tightening is adjusted can be.
  • the American patent 831 046 shows the Z-shaped guidance of the thread over the movable small thread guide to the movable large thread guide and from there to the needle.
  • the small and large thread guides are formed by rods. Each of these rods is supported by at least two levers that sit on a shaft that is controlled by a cam. There is therefore a cam for the small thread guide and a cam for the large thread guide.
  • An adjustment device makes it possible to adjust the movement of the small thread guide in order to adjust the strength of the thread tightening.
  • the small and large thread guides in the known Schifflist embroidery machines have the form of rods. Corresponding to the large number of working needles - there may be more than 1000 - a corresponding large number of threads run over these rods.
  • each thread must be passed under the first rod, which forms the small thread guide, and pulled over the second rod, which forms the large thread conductor, and inserted into the ear of the needle.
  • looping through the thread under the small thread guide is time-consuming and requires skillful hands.
  • the design of the small thread guide as a rod also has the disadvantage that reliable thread guidance is not guaranteed.
  • movement errors of the thread guide are to be reduced and the embroidery image is to be improved.
  • the thread guide the so-called "sorting", is to be improved.
  • the threading process should also be simplified.
  • a thread guide device of the type mentioned in the introduction in that the small thread guide is stationary and in that means are provided which superimpose the movement generated by the second control element on the movement generated by the first control element and transmit it to the large thread guide.
  • the thread guide device has the advantage that the small thread guide no longer has to be moved. Since only the large thread guide is thus moved, the possible summation of movement errors is eliminated. This leads to a more even embroidery pattern over the entire length of the machine. Even higher machine speeds are possible without significantly affecting the embroidery image.
  • the invention thus allows an increase in production without loss of quality compared to the known machines. There is also less thread breakage. Fewer parts are required than before and less mass has to be moved.
  • the small thread guide as a rod as before.
  • the small thread guide since the small thread guide no longer has to be moved, but is stationary, it can be formed by an eyelet. So there is an eyelet for hanging each thread.
  • This mounting is a simple and quick process.
  • the formation of the small thread guide as an eyelet also ensures good thread guidance.
  • a lever system is advantageously provided for superimposing the movement generated by the second control element on the movement caused by the first control element. This enables the desired superimposition of the movements to be implemented cost-effectively.
  • the lever system can consist of two lever parallelograms. The arrangement is expediently such that the first control element can act on a first lever parallelogram, that the second control element can act on a second lever parallelogram, that the first and second lever parallelograms have a common lever, and that the second lever parallelogram with the large thread guide connected is.
  • the invention can also be implemented using electronic means.
  • the invention provides a thread guide device for Schifflist embroidery machines, with a large thread guide for the front thread leading from the bobbin to the needle, a first control element which serves to move the large thread conductor, and a second control element with which the strength of the thread tension can be adjusted and characterized in that the first control element is a signal generator for generating a first movement curve signal, and that the second control element is a signal generator for generating a second movement curve signal corresponding to the desired thread take-up is that a protractor for controlling the signal generators according to the rotational position of the drive shaft is provided, that the outputs of the signal generators are connected to an adder circuit to add the two movement curve signals, and that the output of the adder circuit to the motor control for a drive motor for the large one Thread conductor is connected.
  • the tightening can be done to different degrees, as shown in Figure 2.
  • the arrangement of front thread 11 and rear thread 21 in FIG. 2 corresponds to the arrangement achieved when embroidering with the machine according to FIG. 4, where the needle 16 is located on the left side of the fabric web 20, also called the embroidery bottom.
  • FIG. 2a the front thread 11 was strongly tightened.
  • the front thread 11 and the rear thread 21 are equally strong.
  • the tightening of the rear thread 21 is stronger than that of the front thread 11.
  • the tightening strength of the front thread can be adjusted.
  • the setting changes the movement curve of the small thread guide.
  • the small thread guide 14 (FIG. 4) is stationary according to the invention. This is possible because the large thread guide 15 does not execute the movement according to curve G, but rather a movement that corresponds to one of curves G1, G2 or G3. These curves are obtained by superimposing one of the curves K1, K2,, K3, ... on the movement curve G. This can be done by mechanical or electronic means 18, 18 '( Figures 5 and 6). Thanks to the overlay, the small thread guide 14 no longer has to be moved. Rather, a stationary arrangement as shown in FIG. 4 is possible.
  • the small thread conductor 14 is designed as an eyelet, into which the front thread 11 can easily be inserted through a slot 17.
  • the front thread 11 runs over the stationary small thread conductor 14 and from there over the large thread conductor 15, which is shown in three different positions 15, 15 'and 15' '.
  • the front thread 11 leads from the large thread conductor 15 to the needle 16 in the usual way.
  • the large thread guide 15 may conventionally be in the form of a rod carried by two or more arms 25 attached to the shaft 27.
  • the shaft 27 is expediently driven by a lever mechanism, as is shown, for example, in FIG. 5.
  • the shaft 27 could also be driven by a motor, as will be shown later with reference to FIG. 6.
  • the large thread guide 15 is driven by two cam disks 29 and 31 driven by the drive shaft 30.
  • the cam disk 29 represents the control element for the large thread guide 15
  • Cam 31 is basically the same curve as that used in conventional machines for moving the small thread guide 14. Together with an adjusting device 33, it therefore represents a control element with which the strength of the thread tightening can be adjusted.
  • the cam disc 29 acts on a first lever parallelogram I consisting of the levers 35, 36 and 37.
  • the curve 31 acts on the levers 39, 41, 43 on a second lever parallelogram II, which is formed from the levers 37, 45 and 46.
  • the lever 46 is attached to the shaft 27.
  • the lever parallelograms I and II have a common lever 37, at the fulcrum 49 of which the lever 43 engages in order to overlay the movement curve G determined by the cam plate 29 with a movement curve K1, K2 or K3 determined by the cam plate 31 and the adjusting device 33.
  • the movement curves G1, G2 or G3 for the large thread guide 15 can also be generated with electronic means instead of mechanical means.
  • FIG. 6 shows how this can be achieved, for example.
  • An angle meter 51 supplies a signal which indicates the position of the drive shaft 30 of the embroidery machine. This signal controls a first signal generator 53 for generating a first movement curve signal G.
  • the signal of the angle meter 51 also controls a second signal generator 55 for generating a second movement curve signal K1, K2 or K3.
  • the second signal generator is connected to an adjusting device 57 with which the desired curve K1, K2 or K3 can be selected.
  • the outputs of the signal generators 53, 55 lead to an adder circuit 59 to convert the two motion curves, e.g. G and K1 to add.
  • the adder circuit 59 is connected to the motor controller 61, which controls the motor 63 for driving the shaft 27 of the large thread guide 15.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP96810466A 1995-07-26 1996-07-15 Dispositif guide fil pour machine à broder schiffli Expired - Lifetime EP0756031B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2191/95 1995-07-26
CH219195 1995-07-26

Publications (3)

Publication Number Publication Date
EP0756031A2 true EP0756031A2 (fr) 1997-01-29
EP0756031A3 EP0756031A3 (fr) 1997-08-20
EP0756031B1 EP0756031B1 (fr) 1998-07-01

Family

ID=4228026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810466A Expired - Lifetime EP0756031B1 (fr) 1995-07-26 1996-07-15 Dispositif guide fil pour machine à broder schiffli

Country Status (3)

Country Link
EP (1) EP0756031B1 (fr)
AT (1) ATE167904T1 (fr)
DE (1) DE59600308D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0896082A1 (fr) * 1997-07-31 1999-02-10 Franz Lässer AG Guide fil, en particulier guide fil fixe
US6372274B2 (en) 1998-06-22 2002-04-16 Cryovac, Inc. Process for making a packaged product
WO2014114468A1 (fr) * 2013-01-28 2014-07-31 Zoje Europe Gmbh Machine à broder comprenant au moins une navette rotative pour double point noué

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE256936C (fr) * 1910-12-28
DE320199C (de) * 1912-07-31 1920-04-15 Charles Farmer Nadelfaden-Spannvorrichtung fuer Stickmaschinen
DE379373C (de) * 1921-12-12 1923-08-25 Vogtlaendische Maschinenfabrik Stickmaschine
US4373457A (en) * 1979-02-20 1983-02-15 August Heinzle Feed arrangement for textile machines
EP0666351B1 (fr) * 1994-02-04 1997-05-07 Saurer Sticksysteme Ag Procédé et dispositif pour broder sur une machine à broder à navettes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE256936C (fr) * 1910-12-28
DE320199C (de) * 1912-07-31 1920-04-15 Charles Farmer Nadelfaden-Spannvorrichtung fuer Stickmaschinen
DE379373C (de) * 1921-12-12 1923-08-25 Vogtlaendische Maschinenfabrik Stickmaschine
US4373457A (en) * 1979-02-20 1983-02-15 August Heinzle Feed arrangement for textile machines
EP0666351B1 (fr) * 1994-02-04 1997-05-07 Saurer Sticksysteme Ag Procédé et dispositif pour broder sur une machine à broder à navettes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0896082A1 (fr) * 1997-07-31 1999-02-10 Franz Lässer AG Guide fil, en particulier guide fil fixe
US6372274B2 (en) 1998-06-22 2002-04-16 Cryovac, Inc. Process for making a packaged product
WO2014114468A1 (fr) * 2013-01-28 2014-07-31 Zoje Europe Gmbh Machine à broder comprenant au moins une navette rotative pour double point noué
CN105283596A (zh) * 2013-01-28 2016-01-27 中捷欧洲有限责任公司 具有至少一个双锁式针迹旋梭的刺绣机
CN105283596B (zh) * 2013-01-28 2020-07-28 中捷欧洲有限责任公司 具有至少一个双锁式针迹旋梭的刺绣机

Also Published As

Publication number Publication date
EP0756031A3 (fr) 1997-08-20
ATE167904T1 (de) 1998-07-15
EP0756031B1 (fr) 1998-07-01
DE59600308D1 (de) 1998-08-06

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