EP0461332B1 - Navette de machine à broder - Google Patents

Navette de machine à broder Download PDF

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Publication number
EP0461332B1
EP0461332B1 EP90810522A EP90810522A EP0461332B1 EP 0461332 B1 EP0461332 B1 EP 0461332B1 EP 90810522 A EP90810522 A EP 90810522A EP 90810522 A EP90810522 A EP 90810522A EP 0461332 B1 EP0461332 B1 EP 0461332B1
Authority
EP
European Patent Office
Prior art keywords
shuttle
base plate
accordance
thread
housing
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
EP90810522A
Other languages
German (de)
English (en)
Other versions
EP0461332A1 (fr
Inventor
Ferdinand Kleger
Hans Zeller
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.)
Perfecta Schmid AG
Original Assignee
Perfecta Schmid 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 Perfecta Schmid AG filed Critical Perfecta Schmid AG
Priority to AT9090810522T priority Critical patent/ATE105031T1/de
Publication of EP0461332A1 publication Critical patent/EP0461332A1/fr
Application granted granted Critical
Publication of EP0461332B1 publication Critical patent/EP0461332B1/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
    • D05C11/18—Shuttles ; Shuttle holders; Shuttle driving arrangements

Definitions

  • the boats used today for embroidery and quilting machines are mainly made of steel and only about 10% plastic.
  • the average age of a boat is 12-15 years. But even boats that have been in use for 30 or more years are not uncommon.
  • On an embroidery machine there are therefore often boats of different ages in use, which have certain differences with regard to the mass at the thread hole and on the lid or in which the lid itself has been changed. For this reason, all efforts to automate emptying, cleaning, refilling and adjusting the thread tension with today's boats have failed.
  • attempts have been made to automate certain operations of this activity in individual operations, but with moderate success. For automation, all boats must be identical and, in particular, redesigned for mechanical handling.
  • the object of the present invention to develop a new shuttle for embroidery and quilting machines which is emptied, cleaned and refilled and threaded fully automatically, and the thread tension can be adjusted precisely. It is a further object of the present invention that the shuttle can be manufactured much more cheaply than the previously known shuttle. It is only under the latter condition that converting the embroidery machines to the new shuttle is also economical for the embroidery company. Because just buying the new boat is not enough.
  • the automation then also includes corresponding bobbin winding machines, shuttle processing machines, in which the shuttle is emptied, cleaned, the bobbin inserted, the thread threaded, the thread tension adjusted, the shuttle being filled into a ruler in accordance with the report, and finally the ruler is placed on a transport trolley.
  • the full automation then also includes corresponding transport devices and devices for removing and refilling the shuttle in the embroidery or quilting machine.
  • the key to the entire fully automatic process is the shuttle.
  • a simplified outer structure of the shuttle is particularly important for automation. This is achieved according to the invention in that the base plate has at least one Forms part of the sliding surface of the boat and the means belonging to the thread brake lie on the base plate inside the boat.
  • the embroidery machine boats which have remained essentially the same for more than 100 years, usually have a boat body in which the bobbin is received and a lid in the boat body which can be pivoted about an axis running transversely to the longitudinal direction and with which the Bobine is held in the shuttle body.
  • the edge of the shuttle body represents the sliding surface.
  • the pivoting cover is offset inward from this sliding surface. This is equipped on its outside, that is, towards the sliding surface, with a thread brake spring, on which a tensioning bolt acts, with which the thread tension can be adjusted.
  • the part previously referred to as the shuttle body is called the housing.
  • the part previously referred to as the cover is called the base plate 2 here.
  • the bobbin 4 is no longer so much in the shuttle body, but rather on the base plate 2 mentioned, which is also equipped accordingly with bobbin holding elements.
  • the shuttle housing now has the cover function that was previously assigned to the cover. Furthermore, the previous terminology is dispensed with, and no comparisons are made with the boats according to the known prior art.
  • the embroidery machine boat according to the invention is essentially made of plastic. It has the main components already mentioned, namely the housing 1 and the base plate 2. Only in the area of the boat tip 3 does a part of the housing 1 also form part of the sliding surface. Otherwise, the base plate 2 takes over this function, as can be clearly seen from FIG. 1.
  • the thread F drawn from the bobbin 4 is pulled through a slot which opens into a thread guide opening and runs around the correspondingly curved rear thread guide member 7 to the thread brake to be described later.
  • the thread F leaves the space in which the bobbin 4 is stored, directly through the lateral thread hole 8.
  • the thread hole 8 is embedded in a tab 9 running laterally on the base plate 2 perpendicular to it.
  • the thread hole 8 is provided with a metal or ceramic layer, in the present example in the form of a pressed-in eyelet 14 made of metal or ceramic.
  • the housing 1 is held on the base plate 2 in a positive and non-positive manner.
  • a resilient locking cam 10 is injection molded in the interior of the housing in the area of the boat tip 3, which cam with a Nose 11 on the holding plate 6 cooperates in a snap-in manner.
  • a corresponding positive receptacle 12 is embedded in the rear wall of the housing 1. In the closed, operable state of the boat, the old cam 13 lies on the thread guide member 7 in the above-mentioned positive-locking receptacle 12.
  • the thread brake consists of an upper cover plate 20, which is directly attached to the thread guide member transversely to the longitudinal direction of the boat on the base plate.
  • the upper pressure plate 20 is fastened by means of rivets 21.
  • the upper pressure plate 20 is arched upwards towards the end of the boat.
  • a lower counter-pressure spring 22 is fastened by means of two rivets 23.
  • the lower counter pressure spring 22 extends almost over the entire length of the base plate 2. It rests with its free end under spring pressure on the upper pressure plate 20 below. The free end of the lower counter pressure spring 22 is bent downwards.
  • the curves of the upper pressure plate 20 and the lower counter pressure spring 22 is in the inlet area of the thread F into the thread brake required so that there is no twisting twist on the thread, which can otherwise lead to knot formation and thread breakage.
  • the flat clamping of the thread F between the upper pressure plate 20 and the lower counter pressure spring 22 can be regulated with a slide 24.
  • the slide 24 presses on the lower counter-pressure spring 22 from below. The closer the slide 24 is moved towards the upper counter-plate 20, ie towards the rear end of the boat, the greater the clamping force between the pressure plate 20 and the counter-pressure spring 22 , the higher the thread tension to be set.
  • the slide 24 is slidably held in a slide track 25, which is embedded in the base plate 2. The slide can be adjusted from the base plate underside within the area of the slide track 25.
  • Such a thread brake is particularly suitable for automatically adjusting the thread tension to a reproducible value in an appropriately designed device.
  • a slender grid can be pressed into the slider in the base plate so that the slider is held in the desired position.
  • This grid preferably of a plurality of parallel grooves perpendicular to the direction of the slide track 25, is attached to the inside of the base plate and the lower counterpressure spring 22 holds the slide 24 in engagement with the grid.
  • FIGS. 1 and 2 The embodiment shown here in FIGS. 1 and 2 is based on the complete separation of the base plate 2 and the housing 1 when refilling a new bobbin 4.
  • Such a solution has the advantage that the cleaning of the two main components is particularly easy and one or the other part can be replaced immediately in the event of a defect, without the need for assembly work.
  • the housing 1 can be replaced immediately because all of the shuttle housing 1 and base plates 2 are identical.
  • FIGS. 3 to 5 and 6 to 9 only slightly changed parts of the Schiffchen not received again. The parts that remain the same are also provided with the same reference numbers if their attachment is necessary at all.
  • the most important feature of the embodiment of the shuttle according to the invention according to FIGS. 3 to 5 can be seen in the fact that the base plate 2 is mounted in the housing 1 so that it can pivot about a horizontal pivot axis 15.
  • the pivot axis 15 runs parallel to the base plate 2 on the one hand and perpendicular to the longitudinal axis of the boat on the other hand.
  • the part of the housing 1 forming the tip 3 of the boat in front of the pivot axis 15 is pulled down to the lower level of the base plate 2.
  • the front part of the housing 1 thus forms part of the sliding surface of the embroidery machine shuttle.
  • the connection between the housing 1 and the base plate 2 in the area of the boat tip 3 via the pivot axis 15 is permanent, and a latching mechanism is only required at the boat end.
  • this consists of a latching cam 16 provided on the inside of the housing, via which the end of the base plate 2 snaps, the cam 16 coming to rest in a recess 17 in the base plate 2.
  • a part of the reel holder 5 and the rear thread guide member 7 forms together with the base plate 2 one unity.
  • a housing area 18 was also taken over from the base plate 2, which is why the housing 1 itself has a corresponding, the same size housing recess 19.
  • FIG. 5 shows the shuttle according to the invention in the opened state.
  • the other elements are the same as in the previously described embodiment according to FIGS. 1 and 2. This will not be discussed any further.
  • the third variant of the embroidery machine shuttle according to the invention shown here is shown in FIGS. 6 to 9.
  • the housing 1 and the base plate 2 are connected to be rotatable relative to one another about a vertical pivot axis 15, again in the area of the boat tip 3.
  • the actual boat tip 3 is formed by the base plate 2 this time.
  • the bobbin holder 5 extends almost over the entire length of the boat and is a housing area 18 arranged directly on the base plate 2.
  • the housing 1 is only pivoted away about the pivot axis 15.
  • the apparent longitudinal division of the boat takes place only because the reel holder 5 also includes a relatively large housing region 18. 8, which shows a cross section through the boat according to FIG.
  • FIG. 9 again serves for this purpose, which represents a cross section through the boat in the area of the thread hole 8. This is also the area of the largest cross section.
  • the slide 24, which presses against the lower counter-pressure spring 22 from below, can also be clearly seen here.
  • the boats according to the invention can also have a considerably more complex external shape, as is shown by the explanations according to FIGS. 3 to 9.
  • the asymmetry of the housing 1 with respect to its longitudinal axis is particularly striking.
  • the rear part of the boat becomes slimmer.
  • the cross-sectional area continuously decreases approximately from the end region of the slide track 25 to the end, i.e. the size only decreases in the last third or at least quarter of the boat. Compared to the previous boats, this means that the needle thread pull-out is reduced and the time in which the thread conductors can pull the thread back is extended.
  • the function of the shuttle is to penetrate the loop of the needle thread with its tip so that the front thread is held on the back side of the fabric.
  • the boat is in the moment in which the needle comes back to its culmination point after a short reverse movement.
  • the tip of the boat pushes through the loop created by the reverse movement.
  • the needle moves back again.
  • the shuttle is still pushed through the loop. Thanks to the new boat shape, in which the rear part of the boat is slimmer, that is, with less circumference, less thread is drawn out with each stitch, which must be pulled back again and again by the thread guides.

Landscapes

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

Claims (15)

  1. Navette, en particulier en plastique, pour machines à broder et machines à coudre, avec un boîtier et une plaque de base pouvant être réunie à ce boîtier, sur laquelle est disposé un tendeur de réglage de la tension du fil, caractérisée par le fait que la plaque de base (2) constitue au moins une partie de la surface de glissement de la navette et que les moyens (20-25) appartenant au tendeur se trouvent sur la plaque de base (2), à l'intérieur de la navette.
  2. Navette selon la revendication 1, caractérisée par le fait que la plaque de base (2) est réunie au boîtier (1) de manière pivotante (15).
  3. Navette selon la revendication 2, caractérisée par le fait que la plaque de base (2) est pivotante par rapport à un axe (15) s'étendant perpendiculairement à la plaque de base (fig. 6 + 7).
  4. Navette selon la revendication 2, caractérisée par le fait que la plaque de base (2) est pivotante par rapport à un axe (15) s'étendant parallèlement à la plaque de base (fig. 3-5).
  5. Navette selon la revendication 1, caractérisée par le fait que la totalité des éléments servant au maintien de la canette (5, 6), au guidage du fil et à sa mise sous tension (7, 8, 20 - 25), sont disposés sur la plaque de base (2).
  6. Navette selon la revendication 1, caractérisée par le fait que le tendeur se compose d'une plaque d'appui supérieure (20), fixée dans la partie extrême de la navette et d'un ressort de contre-pression inférieur (22), fixé dans la moîtié antérieure de la navette et agissant contre la plaque d'appui supérieure, et que la force du tendeur peut être réglée au moyen d'un coulisseau (24) dans la plaque de base (2), reposant contre la partie inférieure d'un ressort de contre-pression (22) en étant placé sous celui-ci, de manière à pouvoir coulisser suivant une trajectoire (25) entre la fixation (21) de la plaque d'appui supérieure et le ressort de contre-pression inférieur (22).
  7. Navette selon la revendication 6, caractérisée par le fait que le coulisseau (24) est placé de manière à pouvoir coulisser suivant une trajectoire (25) dans la plaque de base (2), décalée vers l'arrière par rapport à la surface de glissement.
  8. Navette selon la revendication 6, caractérisée par le fait que le coulisseau (24) ainsi que la plaque de base (2) sont conçus avec un cran de telle sorte que le coulisseau s'enclenche dans la position souhaitée et qu'un déplacement de ce coulisseau soit impossible lors du mouvement de va-et-vient de la navette.
  9. Navette selon la revendication 7, caractérisée par le fait que le coulisseau (24) est apte à être actionné depuis la surface de glissement, à l'extérieur de la navette.
  10. Navette selon la revendication 1, caractérisée par le fait qu'une partie (18) du boîtier (1) de la navette forme une seule pièce avec la surface de base (2) de la navette.
  11. Navette selon la revendication 5, caractérisée par le fait que dans la partie postérieure de la navette est disposée une paroi de support (7) servant à maintenir la canette et pourvue d'une fente assurant le guidage du fil.
  12. Navette selon la revendication 1, caractérisée par le fait que la plaque de base (2) est réunie par un côté d' une partie du boîtier (1) à un collier de fixation (9), dans lequel est prévu le chas du fil (8).
  13. Navette selon la revendication 11, caractérisée par le fait que le chas du fil (8) est recouvert de métal ou de céramique (14).
  14. Navette selon la revendication 1, caractérisée par le fait qu'au moins le boîtier (1) de la navette présente une asymmétrie par rapport à l'axe longitudinal, asymmétrie qui provoque un rétrécissement de la surface transversale au moins dans le dernier quart de la navette.
  15. Navette selon la revendication 1, caractérisée par le fait que la plaque de base (2) et le boîtier (1) peuvent être réunis l'un à l'autre par des broches (10, 11, 12, 13).
EP90810522A 1990-06-13 1990-07-09 Navette de machine à broder Expired - Lifetime EP0461332B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9090810522T ATE105031T1 (de) 1990-06-13 1990-07-09 Schiffchen fuer stick- und steppmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH198990 1990-06-13
CH1989/90 1990-06-13

Publications (2)

Publication Number Publication Date
EP0461332A1 EP0461332A1 (fr) 1991-12-18
EP0461332B1 true EP0461332B1 (fr) 1994-04-27

Family

ID=4223312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810522A Expired - Lifetime EP0461332B1 (fr) 1990-06-13 1990-07-09 Navette de machine à broder

Country Status (6)

Country Link
US (1) US5076183A (fr)
EP (1) EP0461332B1 (fr)
JP (1) JPH0450356A (fr)
KR (1) KR0122001B1 (fr)
AT (1) ATE105031T1 (fr)
DE (1) DE59005541D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0826275B2 (ja) * 1988-08-10 1996-03-13 ダイキン工業株式会社 付着防止剤及び付着防止方法
KR20020017539A (ko) * 2000-08-28 2002-03-07 최명부 가성소다와 과망산카리를 이용한 직물 염색 제조 가공방법
CH705462B1 (de) * 2011-09-05 2015-11-13 Triopan Ag Schiffchen für Stickerei- und Steppmaschinen.

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US180541A (en) * 1876-08-01 Improvement in sewing-fvlachswe shuttles
US156933A (en) * 1874-11-17 Improvement in shuttles for sewing-machines
US178431A (en) * 1876-06-06 Improvement in sewing-machine shuttles
US198693A (en) * 1877-12-25 Improvement in sewing-machine shuttles
US222930A (en) * 1879-12-23 Improvement in sewing-machine shuttles
US321381A (en) * 1885-06-30 Machine shuttle
DE105121C (fr) *
US184366A (en) * 1876-11-14 Improvement in sewing-machine shuttles
US285418A (en) * 1883-09-25 Buftjs leavitt
CH404375A (de) * 1962-03-26 1965-12-15 Hagen Fritz Schiffchen
CH478277A (de) * 1967-07-04 1969-09-15 Schmid Arthur Schiffchen für vielnadlige Stepp- und Stickmaschinen
CH494306A (de) * 1969-08-01 1970-07-31 Meier Fa A Spulenschiffchen für Textilmaschinen, insbesondere Stickmaschinen
AT300532B (de) * 1970-03-20 1972-07-25 Hans Buehler Ag Schiffchen für Stick- oder Steppmaschinen

Also Published As

Publication number Publication date
KR0122001B1 (ko) 1997-11-27
DE59005541D1 (de) 1994-06-01
KR920001017A (ko) 1992-01-29
EP0461332A1 (fr) 1991-12-18
JPH0450356A (ja) 1992-02-19
US5076183A (en) 1991-12-31
ATE105031T1 (de) 1994-05-15

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