EP0591570B1 - Machine de façonnage de fil, en particulier machine à broder comportant un dispositif de changement de fil - Google Patents

Machine de façonnage de fil, en particulier machine à broder comportant un dispositif de changement de fil Download PDF

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Publication number
EP0591570B1
EP0591570B1 EP19920117247 EP92117247A EP0591570B1 EP 0591570 B1 EP0591570 B1 EP 0591570B1 EP 19920117247 EP19920117247 EP 19920117247 EP 92117247 A EP92117247 A EP 92117247A EP 0591570 B1 EP0591570 B1 EP 0591570B1
Authority
EP
European Patent Office
Prior art keywords
thread
feeder
drive
eyelet
joining device
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
EP19920117247
Other languages
German (de)
English (en)
Other versions
EP0591570A1 (fr
Inventor
Alessandro Cataletto
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.)
Alkotex Srl
Original Assignee
Alkotex Srl
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 Alkotex Srl filed Critical Alkotex Srl
Priority to EP19920117247 priority Critical patent/EP0591570B1/fr
Priority to DK92117247T priority patent/DK0591570T3/da
Publication of EP0591570A1 publication Critical patent/EP0591570A1/fr
Application granted granted Critical
Publication of EP0591570B1 publication Critical patent/EP0591570B1/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
    • D05C11/16—Arrangements for repeating thread patterns or for changing threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to an embroidery or sewing machine according to the preamble of Claim 1.
  • the thread changing devices on embroidery machines are used to change colors to make, i.e. threads of different colors one after the other and possibly also to be able to use different types.
  • Known Embroidery machines, especially small embroidery machines have as many needle bars as there are colors to use, i.e. there is a separate needle bar for each different thread Needle, thread layer and thread tensioner available, optionally one after the other are used.
  • Such solutions are constructively extraordinary complex.
  • this increases the number of threads different colors is limited. In practice, the limit is for the number of needle bars and thus the number of colors that can be used at 9 to 10. If more colors and thus more needle bars are used the mechanical effort is greater and in particular the construction effort larger and thus the embroidery head wider.
  • the invention has for its object a machine of the generic type Art to design so that the mechanical effort for color-related Thread change becomes small and there is no practical limit on the number of usable colors is given.
  • the invention provides that the im Thread in use with the beginning of the next thread of others Color is connected by air swirling, and that with the help of the leading Thread the subsequent thread is pulled through the needle, which is possible is because there are no knots or the like.
  • This by air swirl manufactured section in which the two threads are connected to one another can by the thread tensioner, the eyelet of the thread layer and in particular the eyelet be pulled through the needle.
  • the section in which the leading and the following thread is connected to each other by air turbulence, is cut out. This is done after this section through the eye of the needle has been pulled.
  • the leading thread that is, by a subsequent thread of a different color is to be replaced, is cut off immediately after the connection is made. Theoretically, this can be done manually, but appropriately by advantageous development according to claim 2 happen.
  • Claims 3 to 7 give advantageous measures for feeding and gripping the threads in front of the connecting device again.
  • connection of the two threads in the thread connecting device takes place in a known manner in a device such as, for example under the name ClipJet from Heberlein Maschinenfabrik AG, CH - 9630 Wattwil, Switzerland, is brought onto the market (see Brochure of the company Heberlein Maschinenfabrik AG "ClipJet-FT ').
  • a device such as, for example under the name ClipJet from Heberlein Maschinenfabrik AG, CH - 9630 Wattwil, Switzerland, is brought onto the market (see Brochure of the company Heberlein Maschinenfabrik AG "ClipJet-FT ').
  • Such Known devices are used in texturing and also in spinning technology used.
  • the filaments of a thread in the Vortex chamber dissolved and swirled by compressed air. Surprisingly it has been shown that if two threads are inserted together, these two threads by swirling their filaments together get connected.
  • the strength of the connection is completely sufficient to the two different, interconnected threads through the thread tensioner,
  • the embroidery machine shown in the drawing shows in the usual way a stand 1, an upper arm 2 and one usually as a base plate 3 designated lower arm.
  • the upper arm 2 points in the area at its free end an embroidery head 4 in which a needle bar 5 in is driven vertically up and down drivable.
  • the drive takes place from a drive motor 6 which is only indicated schematically.
  • the needle bar 5 has a needle 7.
  • On the upper arm 2 is a Spool holder 8 arranged on which any number of Spools of thread 9a, 9b, 9c, 9d, 9e are arranged.
  • the spool pin 8 in turn is provided with a feed device 10, which in the present Case is designed as a rotary feeder, in the same way but can also be designed as a linear feed device to individual Spools of thread 9a to 9e in a position to be explained bring.
  • a feed device 10 which in the present Case is designed as a rotary feeder, in the same way but can also be designed as a linear feed device to individual Spools of thread 9a to 9e in a position to be explained bring.
  • a thread connecting device 11 is attached to the embroidery head 4. This has a channel-like swirl chamber 12, in the middle and A compressed air nozzle 13 opens perpendicular to the direction of the swirl chamber, which via a compressed air connection 14 from a not shown Compressed air source is supplied with compressed air.
  • the thread connecting device 11 is also attached to the embroidery head 4
  • Subordinate thread tensioner 15 which in turn is a usual downstream and operable thread layer 16 with an eyelet 17 is. There are between the thread layer 16 and the needle 7 then thread guide eyes 18 on the embroidery head 4 and a thread guide eye 19 on the needle bar 5.
  • a thread cutter 20 On the underside of the embroidery head 4 there is also a thread cutter 20 provided, which is followed by a thread puller 21, the can be attached to the underside of the arm 2.
  • a thread cutting device is provided on the side of the thread connecting device facing the spool holder 8 11.
  • the vortex chamber 12 will no compressed air supplied.
  • a color change is to be made, i.e. if another Thread 24, for example from the spool of thread 9b, is to be used, then the machine is stopped and the thread 23 is not by means of a shown, located in the base plate 3 cutting device cut off and the free end of this thread 23 from the thread puller 21 seized.
  • the feed device 10 Spool holder 8 is adjusted so that the spool 9b in front of the thread connecting device 11 arrives, as shown in Fig. 2.
  • the new subsequent thread 24 is made by hand or via a known one Thread feeding device, not shown, pneumatic or mechanical introduced into the swirl chamber 12.
  • the thread puller 21 pulls the thread 23 through the swirl chamber 12.
  • Thread tensioner 15 Before this section 26 downstream of the thread take-off direction 25 Thread tensioner 15 reached, the leading "old" thread 23 by means of Thread cutting device 22 cut off, so that now only the subsequent thread 24 drawn off the corresponding spool 9b becomes.
  • the leading "old” thread 23 is from the thread puller 21 extended so far that the section 26 over which the threads 23, 24 are interconnected, pulled through the needle, and So far that a section 27 of about 30 to 35 mm remains, which is only through the subsequent thread 24 is formed. The length of this section 27 is necessary to one ensure a reliable restart of embroidery.
  • the section 26 is cut off by means of the thread cutter 20. Following this, the following thread 24 of a different color.
  • the thread tensioner 15 solved.
  • the control of all facilities and devices can be fully automatic take place and in particular program-controlled from the central Control device via which the embroidery patterns, i.e. the movements the embroidery machine can be controlled.
  • the computing drive 37 is designed as a linear drive, namely as a piston-cylinder drive that can be pressurized.
  • the rake drive 37 is designed in a known manner that he can gradually adjust the eyelet rake 36, namely with a step size that corresponds to the distance a between two adjacent eyelets 40 corresponds to the same distance from each other in the direction of displacement 41 of the eyelet rake 36 are formed in this.
  • a thread-gripping and on the base plate 30 Feed device 42 provided.
  • This has a gripping device 43, which works like a gripper. It has a gripping abutment 44 on that by a leg of one in the form of a C-shaped gripping body 45 open at the bottom is formed.
  • On the gripping body 45 is also a displaceable by means of a gripping drive 46 Gripping punch 47 is provided which interacts with the gripping abutment 44.
  • the gripping drive 46 is designed as a linear drive, specifically as a piston-cylinder drive that can be pressurized.
  • Its cylinder 48 is attached to the gripping body 45, while the gripping punch 47 is free End of its piston rod 49 is attached so that the gripping punch 47th can be moved in the direction of the eyelets 40 arranged side by side can, namely from a bearing against the gripping abutment 44 Position in a position spaced from this, in which the piston rod 49 is at least partially moved into the cylinder 48.
  • the gripping body 45 extending parallel to the eyelet rake 36 is by means of a thread feed device 50, which is also a Is part of the thread gripping and feeding device 42.
  • This thread feeding device has a feed drive 51, which acts as a linear drive is formed, again as a pressurizable medium Piston-cylinder drive.
  • Whose cylinder 52 is by means of a pivot bearing 53 attached to the base plate 30, the pivot axis 54 parallel runs to the direction of displacement 41 of the eyelet rake 36. From that Pivot bearing 53 opposite end of the cylinder 52 is a piston rod 55 led out, attached to the free end of the gripping body 45 is.
  • a lifting drive 56 acts on the feed drive 51
  • Linear drive is designed, namely as a pressurizable medium Piston-cylinder drive.
  • Whose cylinder 57 is connected via a support 58 the base plate 30 connected.
  • Its piston rod 59 is on the cylinder 52 of the feed drive 51 is articulated and capable of this about the pivot axis 54 of the pivot bearing 53 to pivot. This allows the gripping body 45 brought into a more distant position from the base plate 30 will.
  • a thread connecting device 60 on the base plate 30 attached basically with the thread connecting device 11th 1 and 2 is identical. It has a fixed at the Base plate 30 attached base body 61 on which an upper Lid 62 is pivotally mounted about a pivot axis 63. At the top 64 of the base body 61, a channel-like swirl chamber 65 is formed, which are closed when the cover 62 is in place and when the cover is pivoted off Cover 62 is open at the top. In this vortex chamber 65 A compressed air nozzle opens in the middle and perpendicular to its longitudinal direction 66 a, via a compressed air connection 67 from a not shown Compressed air source is pressurized with compressed air.
  • the lid 62 is by means of of a swivel drive 68 from the open line shown in FIG. 3 Position in the pivoting direction 69 in a vortex chamber 65 closing Swiveling position.
  • the swivel drive 68 is also as Piston-cylinder drive which can be acted upon by pressure medium, the Cylinder 70 is attached to the base plate 30 by means of a pivot bearing 71 while the piston rod 72 is connected to the cover 62 Swivel lever 73 is articulated.
  • a thread cutting device 74 which one Thread cutter 75, which is designed in the manner of scissors.
  • This thread cutter 75 is including a cutting drive 76 a carrier 77 attached, which is parallel to the displacement direction 41 and is vertically displaceable.
  • a displacement drive 78 is provided, which is equally like the cutting drive as a piston-cylinder drive that can be pressurized with pressure medium is trained. Its cylinder 79 is on the base plate 30 attached while a stroke drive at the free end of its piston rod 80 81 is attached.
  • This stroke drive 81 is also a linear drive, specifically designed as a piston-cylinder drive that can be pressurized, whose cylinder 82 is attached to the piston rod 80 while its piston rod 83 supports 77 with thread cutter 75 wearing.
  • the shift drive 78 is the same as the rake drive 37 formed in a known manner so that its piston rod in each same steps can be extended or retracted, the Stride length corresponds to the distance a between adjacent eyelets 40 in the eyelet rake 36. In this way, the thread cutter 75 in front of each eyelet 40 in Eyelet rake 36 are brought. The thread cutter 74 is immediate arranged in front of the eyelet rake 36.
  • Thread 84e is pulled obliquely here because the eyelet 40 leading it Eyelet rake 36 is no longer in alignment with the swirl chamber 65. Now the embroidery machine is stopped, i.e. the - only in Fig. 1st and 2 shown - needle bar 5 is no longer going up and down driven.
  • the thread gripping and feeding device 42 is actuated by first the lifting drive 56 is extended so that the gripping device 43 directly from a swiveled position arrives in front of the eyelet rake 36.
  • the feed drive 51 is for this extended.
  • the gripping punch 47 is here from the gripping abutment 44 lifted.
  • the thread end 86 protruding from the eyelet rake 36 Fadens 84a is in front of the gripping abutment 44.
  • this thread end 86 is between the gripping punch 47 and the gripping abutment 44 is clamped.
  • the cover 62 from the swirl chamber 65 lifted.
  • the gripping device 43 is actuated of the lift drive 56 pivoted up. Then the piston rod 55 retracted into the cylinder 52, causing the gripping device 43 is moved over the thread connecting device 60, whereby it simultaneously pulls the thread 84a. It is through appropriate Actuation of the lifting drive 56 between the guide eyelet 85 and the thread connector 60 lowered, causing the extended Thread 84a is inserted into the swirl chamber 65 in which the thread 84e previously in use is still located.
  • the way 87 the gripping device 43 is shown in broken lines in FIG. 3. He is similarly shown in dashed lines in Fig. 4c, but pivoted there by 90 ° shown.
  • the cover 62 is activated by actuating the swivel drive 68 again in its closing the channel-like swirl chamber 65 Position pivoted. Now the compressed air nozzle 66 over the Compressed air connection 67 compressed air supplied, whereby the two threads 84a and 84e are swirled together. This is done by applying of the shift drive 78 of the thread cutter 75 among those to be cut Thread 84e brought. Subsequently, by applying it accordingly the lifting drive 81 of the carrier 77 of the thread cutter 75 in front moves the eyelet 40 through which the thread 84e is guided. By actuation of the cutting drive 76, the thread 84e is cut. It is pointed out that in Fig. 3 a different thread than in that 4a to 4c is shown. Cutting the thread 84e is in remaining shown in Fig. 4d.
  • the swivel drive 68 is acted upon accordingly Lid 62 opened again.
  • the feed drive 51 and the lift drive 56 are operated in such a way that the gripping device 43 again in their The catch position comes before the eyelet rake 36, the gripping punch 47 is also lifted off the gripping abutment 44 again.
  • FIG. 5 and 6 is an alternative to the embodiment according to Fig. 3 shown, in which instead of the mechanical thread gripping there and feed device, a thread feed device 89 is provided that works with a suction pipe 90.
  • the arrangement of the spools of thread 32, the thread 84 is guided by guide eyes 34 of a guide body 35, the design and the drive of the eyelet rake 36, the design the thread cutter 74 and the thread guide 85 identical to that in the embodiment of FIG. 3, so that neither detailed description still a corresponding redisplay in the drawing is necessary.
  • a suction pipe 90 which means a lifting drive 91 can be brought into a position on the one hand, in which the suction pipe 90 with an eyelet 40 of the eyelet rake 36 and the channel-like swirl chamber 65 of the thread connecting device 60 ' flees. On the other hand, it can move down to a position in which a suction funnel 92 facing the eyelet rake 36 Suction pipe 90 is free from the corresponding eyelet 40.
  • the thread connecting device 60 'needs for production a swirl between two threads does not necessarily mean one hinged lid. Otherwise, its compressed air nozzle 66 is one Connection 67 'not only to a compressed air source, but also to a Vacuum source, i.e. a vacuum source can be connected.
  • a thread pulling device 93 is shown in FIG consists of two abutting rollers 94, 95, one of which can be driven by a motor, not shown. This thread puller 93 is - as shown in FIGS. 1 and 2 Thread cutter 20 downstream.
  • the suction pipe 90 is located in FIG an aligned position in front of the eyelet 40 on the one hand and the channel-like Swirl chamber 65, on the other hand.
  • the thread 84e in the embroidery insert is from the spool 32e through the guide eyelet 34 in the guide body 35 to the guide rake 36 and guided there by an eyelet 40. He runs through the suction tube 90 during the entire stitching process with his suction funnel 92 sits close to the eyelet 40 and with his other outlet end 96 relatively close to the thread connecting device 60 'is present.

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

Claims (7)

  1. Machine à broder ou à coudre comportant un dispositif de changement de fil, avec un porteur de bobine de fil (8, 31), un tendeur (15) pour un fil (23, 24; 84a à 84i) qui est défilé d'une bobine de fil (9a à 9e, 32a à 32i) en sens de défilé (25), un releveur de fil (16), une aiguille (7) actionnable de haut en bas, un dispositif de liaison de fil (11, 60, 60') placé en aval du porteur de bobine de fil (8, 31) en sens de défilé (25), un fournisseur de fil (50, 89) prévu entre le porteur de bobine de fil (8, 31) et le dispositif de liaison de fil (11, 60, 60') pour fournir un fil (24; 84a à 84i) au dispositif de liaison de fil (11, 60, 60'), et avec un dispositif à défiler (21, 93) caractérisée en ce que le dispositif de liaison de fil (11, 60, 60') présente une chambre de tourbillonnement (12, 65) du type d'un passage, dans laquelle débouche une tuyère à air comprimé (13, 66), en ce que le fournisseur de fil (50, 89) est formé de façon à fournir un fil (24; 84 a à 84i) dans une chambre de tourbillonnement (12, 65), en ce qu'un dispositif à défiler (21, 93) est placé en aval de l'aiguille (7) en sens de défilé (25), et en ce qu'un coupe-fil (20) est placé en aval de l'aiguille (7) en sens de défilé (25).
  2. Machine selon la revendication 1, caractérisée en ce qu'un dispositif coupe-fil (22, 74) est conjugué au dispositif de liaison de fil (11, 60, 60').
  3. Machine selon la revendication 1, caractérisée en ce qu'un porte guide-fils (36) comportant des oeillets (40), dont chacun est destiné à guider un fil (84a à 84i), est placé entre le porteur de bobine de fil (31) et le fournisseur de fil (50, 89), porte guide-fils (36) qui est actionnable par le moyen d'une commande (37) en sens de déplacement (41) transversalement au sens de travail du fournisseur de fil (50, 89) de telle sorte qu'un oeillet (40) à la fois soit déplaçable dans le chemin de travail du fournisseur de fil (50, 89).
  4. Machine selon la revendication 2 et 3, caractérisée en ce que le dispositif coupe-fil (74) est arrangé entre le fournisseur de fil (50, 89) et le porte guide-fils (36).
  5. Machine selon la revendication 3, caractérisée en ce que le fournisseur de fil (50) est formé comme dispositif de prise et fournisseur de fil (42) qui est pourvu d'un dispositif de prise de fil (43) pour prendre un bout d'un fil (84a à 84i) qui fait saillie du porte guide-fils (36).
  6. Machine selon la revendication 5, caractérisée en ce que le dispositif de prise et fournisseur de fil (42) est pourvu d'une commande de levage (56) pour lever le dispositif de prise (43) au-dessus du dispositif de liaison de fil (60).
  7. Machine selon la revendication 3, caractérisée en ce que le fournisseur de fil (89) présente un tuyau d'aspiration (90) qui est arrangé entre le porte guide-fils (36) et le dispositif de liaison de fil (60') et en ce que la chambre de tourbillonnement (65) du dispositif de liaison de fil (60') est pourvue d'un raccord à vide (67').
EP19920117247 1992-10-09 1992-10-09 Machine de façonnage de fil, en particulier machine à broder comportant un dispositif de changement de fil Expired - Lifetime EP0591570B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19920117247 EP0591570B1 (fr) 1992-10-09 1992-10-09 Machine de façonnage de fil, en particulier machine à broder comportant un dispositif de changement de fil
DK92117247T DK0591570T3 (da) 1992-10-09 1992-10-09 Trådforarbejdende maskine, især broderemaskine, med en trådskifteindretning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19920117247 EP0591570B1 (fr) 1992-10-09 1992-10-09 Machine de façonnage de fil, en particulier machine à broder comportant un dispositif de changement de fil

Publications (2)

Publication Number Publication Date
EP0591570A1 EP0591570A1 (fr) 1994-04-13
EP0591570B1 true EP0591570B1 (fr) 1998-06-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920117247 Expired - Lifetime EP0591570B1 (fr) 1992-10-09 1992-10-09 Machine de façonnage de fil, en particulier machine à broder comportant un dispositif de changement de fil

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EP (1) EP0591570B1 (fr)
DK (1) DK0591570T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19824210A1 (de) * 1998-05-29 1999-12-02 Saxonia Umformtechnik Gmbh Fadenverbindung erweitert

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3751981A (en) * 1971-11-15 1973-08-14 Celanese Corp Yarn measuring and yarn feeding therefor
DE2902003C2 (de) * 1979-01-19 1986-08-28 W. Schlafhorst & Co, 4050 Mönchengladbach Tufting-Maschine mit einer Einrichtung zum Verlängern der zugeführten Fadenschar
JPS6029190A (ja) * 1983-07-23 1985-02-14 蛇の目ミシン工業株式会社 ミシンの糸接続方法及び装置
DE3336202A1 (de) * 1983-10-05 1985-04-25 Textechno Herbert Stein GmbH & Co KG, 4050 Mönchengladbach Verfahren und vorrichtung zur verbindung fadenfoermiger materialien
CH664776A5 (fr) * 1985-06-21 1988-03-31 Stoll & Co H Dispositif de selection de fils pour metier a tricoter.
DE3619105A1 (de) * 1986-06-06 1987-12-10 Christian Schwabe Fadenwechsel-verfahren fuer textilmaschinen
WO1991004217A1 (fr) * 1989-09-19 1991-04-04 Viscosuisse Sa Procede et dispositif de liaison automatique de fils
DE4118130A1 (de) * 1991-06-03 1992-12-10 Alkotex Srl Fadenverarbeitende maschine, insbesondere stickmaschine mit einer faden-wechseleinrichtung

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Publication number Publication date
EP0591570A1 (fr) 1994-04-13
DK0591570T3 (da) 1999-04-06

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