EP0753618A2 - Blocage de fil - Google Patents

Blocage de fil Download PDF

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Publication number
EP0753618A2
EP0753618A2 EP96110329A EP96110329A EP0753618A2 EP 0753618 A2 EP0753618 A2 EP 0753618A2 EP 96110329 A EP96110329 A EP 96110329A EP 96110329 A EP96110329 A EP 96110329A EP 0753618 A2 EP0753618 A2 EP 0753618A2
Authority
EP
European Patent Office
Prior art keywords
thread
clamping
transport
holding
lever
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.)
Ceased
Application number
EP96110329A
Other languages
German (de)
English (en)
Other versions
EP0753618A3 (fr
Inventor
Gert Bucher
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.)
Saxonia Umformtechnik GmbH
Original Assignee
Saxonia Umformtechnik GmbH
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 Saxonia Umformtechnik GmbH filed Critical Saxonia Umformtechnik GmbH
Publication of EP0753618A2 publication Critical patent/EP0753618A2/fr
Publication of EP0753618A3 publication Critical patent/EP0753618A3/fr
Ceased 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 the clamping, defined further transport or complete release of individual from a plurality of threads, in particular yarns, which are guided next to one another in thread processing machines.
  • thread processing machines In particular with sewing or knitting machines, there is the problem that if the thread is changed, the new thread required must be pulled in by hand through the entire thread guide, which means a relatively high set-up time depending on the frequency of the thread change.
  • an operative connection between the clamping unit and the transport unit preferably a mechanical operative connection in the form of a two-armed lever.
  • This lever can be pivoted about an axis between the two units and there is preferably a separate clamping unit and a separate transport unit for each individual thread.
  • This lever, or generally this operative connection can be moved in the transverse direction together with the threads in order to move the desired new thread or thread to be processed to the only existing processing position bring, which is usually aligned with the old and new thread connecting unit, such as the swirl chamber.
  • Each of the narrow, two-armed levers, each associated with a thread is preferably equipped with a clamping bolt, which is generally formed in one piece with one end of the lever, and against a fixed, over the entire width of the threads available for selection usually continuous, strip-shaped stop presses.
  • a pressure plate is rotatably mounted, which can press against a drivable transport shaft by pivoting the lever about its axis and can thereby take up the thread between the pressure plate and transport shaft. When the transport shaft is driven in this state, the thread is pushed forward in a defined manner.
  • the transport shaft is generally designed to be continuous over several threads or even all the threads that are guided next to one another, while the pressure plate for each thread is provided separately on a separate lever is.
  • annular grooves are formed in the transport shaft, into which the pressure disks engage relatively tightly, that is to say at a very short distance from the flanks of the grooves, so that lateral deflection of the thread is no longer possible.
  • the clamping unit at the other end of the operative connection or the two-armed lever also consists of a clamping bolt assigned to each individual thread, for example the end of this lever which is formed in one piece with the two-armed lever and which can press the thread against a stop and thus clamp it, this stop in the form of a strip over the entire amount of the available threads can be formed transversely continuously and designed to be displaceable in the transverse direction.
  • the operative connection is designed so that it clamps the corresponding thread in the clamping unit when pivoting into one extreme position, presses the thread by means of the pressure plate against the transport shaft when pivoting into the other extreme position, and loosely loosens the thread in both units in the central position lets, by means of the one knitting unit, the desired of the three necessary positions, i.e. transport position, clamping position or sewing position, can be set for each thread.
  • the operative connection When the operative connection is designed as a two-armed lever, it can be pivoted, for example, in the middle about an axis on which all two-armed levers for each thread lying next to one another are mounted. If the thread runs above the two-armed lever, the clamping bolt is designed as an extension projecting upward from one end of the lever, which presses the thread against a stop running above it. At the other end of the lever, the pressure plate is rotatably mounted, which can press the thread running over it against a transport shaft located above it.
  • Each of these operative connections i.e. the two-armed lever
  • the two-armed lever also has a third lever arm as an actuating arm as an active connection, which e.g. transversely to the horizontal two-armed lever protrudes downward, so that the free end of the actuating arm can be acted upon on the one hand by a spring and on the other hand is pressed against the holding element.
  • the two-armed levers assigned to each thread which lie next to each other for reasons of structural simplification, are together with the threads and - when the transport shaft is formed with the grooves for each thread - also can be moved in the transverse direction together with the transport shaft in order to be able to bring the desired thread in the processing position which is only present once in the transverse direction.
  • the continuous, designed as a bar stop can be stationary and not movable in the transverse direction, as can the holding elements holding the plane in the sewing position.
  • This holding element only has to be designed separately at one processing position, while the holding element can be designed in one piece or extending over several threads for all other positions.
  • a functional element for example a selector lever, which, for example, counteracts the force of the spring that biases the two-armed lever.
  • the holding element located in the processing position can be moved so that it lies both inside and outside the effective range of the operative connection, that is to say approximately the actuating arm of the two-armed lever.
  • the holding elements outside the processing position can also be moved in this sense, for example by longitudinal movement in or against the direction of transport of the thread. This movement is preferably effected directly by the functional element arranged only in the processing position.
  • the processing state is that only the thread in the processing position is free both in the transport unit and in the clamping unit and can therefore be pulled through according to its processing during sewing, embroidery etc., while all other threads are clamped in the clamping unit.
  • the selection state consists in changing over to an new thread after processing an old thread, in that the entire thread selection including the levers, pressure plates and grooved transport shaft has already been shifted so far in the transverse direction that the new thread is already in the processing position, so that in As a result, the old thread is already outside, next to the processing position.
  • the old thread is free both in the clamping unit and in the transport unit, since the associated levers are held in the loose middle position. All other threads are clamped in the clamping unit.
  • the transport state consists in that both the selected new thread and the old thread in the transport unit are pressed against the rotatingly driven transport shaft by means of their pressure plates and are thereby moved synchronously and in a defined manner by means of this transport shaft in order to move to the unit located further forward in the transport direction Connecting the old to the new thread, for example a swirl chamber, to enable a connection of the two threads over a defined distance. All other threads are also clamped in the clamping unit.
  • FIG. 1 shows only a single thread 10, namely the thread 10a currently in the processing position 20, which therefore also passes through the swirl chamber 198, which is always in alignment with the processing position in front of the actual thread changing device.
  • the swirl chamber 198 the channel located between the bottom and the lid can be seen, through which the thread 10a extends, and which can be acted upon from below via the compressed air connection 199 with compressed air, so that if there is next to the old thread shown 10a still has the free front end of the new thread, not shown, in which a swirling of the filaments and thus a firm connection of the two threads can be achieved, in order to thus use the old thread that is no longer required to obtain the desired new thread through the further thread path, for example sewing needle loops etc. pull through and cause an automatic thread change.
  • the actual thread changing device is located on a slide 191 which can be displaced in the transverse direction.
  • first eyelet rake 135 and the second eyelet rake 136 in the direction of passage there are a plurality of eyelets 40 and 40 'aligned with one another, with each of these eyelets in each case parallel to the drawn thread 10 extending and for reasons of clarity not shown - other thread available for selection runs.
  • the threads not currently used end at the left, front end of the Eye rake 136, where they can be cut with the aid of the knife 124 acting from below.
  • the compressed air connection 218 in the front eyelet rake 136 serves to be able to shoot the new thread then in the processing position forward by means of compressed air in addition to the old thread into the swirl chamber 198 when the slide 191 is moved, but this is ensured by means of the thread clamping in the clamping unit 14 behind it must be that this forward movement takes place at a defined speed and only a defined length, since otherwise the new thread would be shot far too far forward by means of the compressed air, and corresponding malfunctions would result.
  • the actual yarn clamping is solved in that in each individual eyelet 40 of the first eyelet rake 135 a spring-loaded plunger 204 can clamp each individual thread in the associated eyelet 40.
  • the defined thread transport is ensured by the threads being possibly clamped between a transport shaft 209 and a pressure shaft 210 and being transported on in a defined manner by rotating the transport shaft.
  • the clamping is effected in that the pressure shaft 210 in turn is pressed against the transport shaft 209 by a segment-shaped shaft 211 or not.
  • clamping unit 14 and transport unit 13 are operatively connected in the present invention, as is first explained with reference to the basic illustration in FIG. 3.
  • the thread transport direction 11 in FIGS. 2 and 3 runs from left to right, while in FIG. 1 the transport direction runs from right to left.
  • a lever 8 is shown which is pivotable about an axis 23.
  • the lever 8 is an at least two-armed lever which lies essentially horizontally below the thread 10 and additionally has an actuating arm 9 which projects downward transversely to these two functional arms.
  • the clamping unit 14 is located on the left, ie in front of the axis of the lever, and on the right, ie thereafter, the transport unit 13.
  • the clamping unit 14 consists of a stop 3 located above the thread 10, of which from below the thread 10 can be pressed and clamped with the aid of a clamping bolt 4.
  • the clamping bolt 4 is formed in one piece with the one end of the two-armed lever 8, and protrudes from it upwards, towards the stop 3.
  • a pressure plate 7 is rotatably mounted.
  • the lever 8 can assume three functional positions:
  • the lever 8 does not press the thread 10 upwards against the stop 3 or the transport shaft 6 either with the clamping bolt in the clamping unit 14 or with the pressure disc 7 in the transport unit 13, so that the thread 10 is completely loose.
  • the transport disk 7 can already be located within the respective groove 24 of the transport shaft 6.
  • the lever 8 is held by a spring 2 acting on the lever in the direction of the clamping position, ie to the left, and thereby pressing against a holding edge 17 holding the lever in the middle position.
  • a tine-shaped curved selection lever 15 can also agree with its outer curvature, which in this position e.g. can be acted upon by means of a pneumatic cylinder (arrow 30), and in this case overcomes the spring 2, which presses the actuating arm 9 against the holding edge 17.
  • the lever can now be pivoted from this loose middle position, the sewing position, either by moving the holding plate 18, which has the holding edge 17 to the right, or by pivoting the selector lever 15 counterclockwise while overcoming the force of the spring 2, so that the pressure plate 7 of the lever 8 presses the thread 10 upwards against the transport shaft 6. If the transport shaft 6 is then rotated in a counterclockwise direction in a defined manner, the thread 10 is moved on in a defined manner in the transport direction. Since the clamping bolt 4 moves further away from the already loose position relative to its stop 3, there is also no clamping of the thread in the clamping unit 14 in this, the transport position.
  • the lever 8 can also be moved to the left into the clamping position by pivoting the actuating arm 9 by pivoting the holding plate 18 sufficiently far down.
  • the free end of the actuating arm 9 snaps over the holding edge 17, so that the clamping bolt 4 presses upward by the force of the spring 2 against the stop 3 and thus clamps the thread 10 there.
  • levers 8 with pressure plates 7 are present in the yarn clamping, as shown in perspective in Fig. 2 in a schematic diagram, in a plurality for each thread 10 next to each other, for reasons of clarity in Fig. 2 is only a lever 8 and no thread is drawn.
  • Each of the individual pressure plates 7 engages in an associated groove 24 of the transport shaft 6.
  • All levers 8 are preferably mounted on a common axis 23 and can be displaced in the transverse direction 12 together with the threads, that is to say the eye rakes 135, 136 shown in FIG. 1 and, for example, by means of the cross slide 191 of FIG. 1, so that the desired new thread is always present is in the processing position 20.
  • a displacement of the transport shaft 6 is also necessary if the pressure plates 7 are still within the grooves 24 in the central position.
  • a displacement of the stop 3 is also useful in order not to cause any friction on the threads in the event of a transverse displacement.
  • All the displaceable parts are preferably fastened together on a displaceable carriage 191 as shown in FIG. 1.
  • the selection lever 15 shown in FIG. 3 is only present in a single position, namely the processing position 20.
  • the holding plate 18 'with the holding edge 17' at the processing position 20 is formed separately and functionally separated from the holding plate 18 or holding edge 17 at all other positions, which is why these parts can also be formed uniformly for all other positions, as in FIG. 2 can be seen where there is a one-piece holding plate 18a and 18b on the left and right of the processing position 20.
  • At least the holding plate 18 'located in the processing position 20 is prestressed from bottom to top, and can be pressed down against this prestress.
  • the holding plates 18a, 18b located outside the processing position 20 are displaceable in and against the transport direction 11 with the aid of Swivel arms 22 which engage in corresponding openings 21 in the holding plates 18a, 18b.
  • These pivot arms 22 protrude radially from a selection bridge 5 running above the holding plates 18a, 18b in the transverse direction 12, and are firmly connected to the latter, wherein this selection bridge 5 is also permanently connected to the selection lever 15 and represents its pivot axis.
  • at least one actuating arm 16 is arranged on it in a radially striving manner, which can be acted upon in the direction of pressing the selection lever 15 against the actuating arm 9 of the lever 8 and is biased in the opposite direction by the spring 1.
  • the upper side of the holding plates 18, in particular at least the holding plate 18 'in the processing position 20, is formed as an inclined plane rising towards the end holding edge 17'.
  • the function of thread clamping is described below:
  • this thread and thus the lever 8 assigned to it must be moved into the processing position 20 into the central position, the sewing position, in order to allow the thread 10 to run freely according to its processing. All other threads are to be clamped in the clamping unit 14, that is to say the associated other levers 8 remain in the clamping position.
  • the old thread 10a still runs through the swirl chamber 198, but behind the swirl chamber transversely to its nozzle 40 'located outside the processing position 20.
  • the lever 8 assigned to the old thread which was in the middle sewing position, is displaced transversely.
  • the lever 8 which is assigned to the new thread 10n and is now in the processing position 20, must still move out of its clamping position be relocated.
  • the old and the new thread must be one defined length and are transported forward at a defined speed, while all other threads are to remain clamped.
  • the selection bridge 5 is pivoted counterclockwise by means of its actuating arm 16.
  • the selection lever 15 first presses the lever 8 located in the processing position 20, that is to say its actuating arm 9, to the right beyond the holding edge 17 'and, upon further pivoting, until this lever 8 is in the transport position.
  • the holding plates 18a, 18b are shifted to the right by the pivoting of the selection bridge 5 and its swivel arms 22 so that the only further lever 8, namely the sea old thread, the actuating arm 9 is still in abutment on the retaining edge 17a, 17b, is pivoted to the right, so that this lever 8 also assumes the transport position.
  • the holding plates 18a, 18b In order to subsequently only release the thread now in the processing portion 20 and to clamp all the other threads, including the previous old thread (after the old thread has been cut by means of the knife of FIG. 1), the holding plates 18a, 18b must be removed Engagement of the lever 8 still assigned to the old thread so far, so that it can also go into the clamping position.
  • the holding plate 18a, 18b is preferably pivoted such that its holding edge 17a, 17b sinks below the free lower end of the holding arm 9, so that the free end of the corresponding actuating arm 9 moves to the left over the Holding edge 17 slides away and is pressed by the force of the spring 2 against the stop 3, like all other levers 8 except the lever in the processing position 20.
  • a sufficiently large displacement of the holding plate 18a, 18b to the left would also be conceivable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Knitting Machines (AREA)
EP96110329A 1995-07-12 1996-06-26 Blocage de fil Ceased EP0753618A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19525434A DE19525434C2 (de) 1995-07-12 1995-07-12 Faden-bzw. Garnklemmung
DE19525434 1995-07-12

Publications (2)

Publication Number Publication Date
EP0753618A2 true EP0753618A2 (fr) 1997-01-15
EP0753618A3 EP0753618A3 (fr) 1997-08-13

Family

ID=7766668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96110329A Ceased EP0753618A3 (fr) 1995-07-12 1996-06-26 Blocage de fil

Country Status (6)

Country Link
US (1) US5752642A (fr)
EP (1) EP0753618A3 (fr)
JP (1) JPH09188476A (fr)
KR (1) KR970006580A (fr)
CA (1) CA2180915A1 (fr)
DE (1) DE19525434C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH691682A5 (de) * 1997-03-10 2001-09-14 Komax Holding Ag Kabeltransporteinheit.
DE50102842D1 (de) * 2000-12-08 2004-08-19 Komax Holding Ag Dierikon Kabelverarbeitungseinrichtung mit Kabelwechsler
EP1524341A1 (fr) * 2003-10-13 2005-04-20 Benninger AG Procédé et dipositif de changement de fils, en particulier pour cantre d'ourdissoir
CN106757883B (zh) * 2016-12-21 2022-11-29 浙江博盟精工轴承有限公司 一种电脑绣花机机械臂

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888401A (en) * 1973-03-20 1975-06-10 Evans & Son Portsmouth Limited Filament feeding apparatus
US3937157A (en) * 1974-05-29 1976-02-10 Abram N. Spanel Method and means of tufting
US4043494A (en) * 1976-02-23 1977-08-23 Amp Incorporated Apparatus for feeding a plurality of wires
EP0221482A1 (fr) * 1985-10-28 1987-05-13 Bernhard Dr.-Ing. Jürgenhake Méthode et dispositif de transport de câbles
EP0643005A1 (fr) * 1993-09-09 1995-03-15 Melco Industries Inc. Changement de fil dans une machine à coudre
DE4344348A1 (de) * 1993-12-23 1995-06-29 Saxonia Umformtechnik Gmbh Fadenwechsel mit Drucklufttransport

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067704A (en) * 1960-09-06 1962-12-11 American Mach & Foundry Thread selector mechanism for stitching machine
US3334477A (en) * 1965-10-22 1967-08-08 Cormier Hosiery Mills Inc Apparatus and method for connecting a yarn to an existing yarn
CA934946A (en) * 1971-02-01 1973-10-09 E. Crowell Donald Yarn knotter
WO1982003642A1 (fr) * 1981-04-16 1982-10-28 Jacobsson Kurt Arne Gunnar Procede d'alimentation en fils de differentes couleurs d'une machine a tricoter, et machine a tricoter pour la mise en oeuvre du procede
DE3336202A1 (de) * 1983-10-05 1985-04-25 Textechno Herbert Stein GmbH & Co KG, 4050 Mönchengladbach Verfahren und vorrichtung zur verbindung fadenfoermiger materialien
IT1223431B (it) * 1987-12-14 1990-09-19 Mesdan Spa Apparecchio di impiombatura con aria compressa addizionata di un liquido per la giunzione di fili o filati tessili
KR920702843A (ko) * 1989-09-19 1992-10-28 데블류. 세틀레, 피. 헤르만 실 자동연결 장치 및 방법
DE3935536C2 (de) * 1989-10-25 2000-02-10 Schlafhorst & Co W Fadenspleißvorrichtung
DE4116297A1 (de) * 1991-05-17 1992-11-19 Union Special Gmbh Bandzufuehreinrichtung an einer naehmaschine
DE4118130A1 (de) * 1991-06-03 1992-12-10 Alkotex Srl Fadenverarbeitende maschine, insbesondere stickmaschine mit einer faden-wechseleinrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888401A (en) * 1973-03-20 1975-06-10 Evans & Son Portsmouth Limited Filament feeding apparatus
US3937157A (en) * 1974-05-29 1976-02-10 Abram N. Spanel Method and means of tufting
US4043494A (en) * 1976-02-23 1977-08-23 Amp Incorporated Apparatus for feeding a plurality of wires
EP0221482A1 (fr) * 1985-10-28 1987-05-13 Bernhard Dr.-Ing. Jürgenhake Méthode et dispositif de transport de câbles
EP0643005A1 (fr) * 1993-09-09 1995-03-15 Melco Industries Inc. Changement de fil dans une machine à coudre
DE4344348A1 (de) * 1993-12-23 1995-06-29 Saxonia Umformtechnik Gmbh Fadenwechsel mit Drucklufttransport

Also Published As

Publication number Publication date
DE19525434C2 (de) 1999-04-01
EP0753618A3 (fr) 1997-08-13
JPH09188476A (ja) 1997-07-22
DE19525434A1 (de) 1997-01-16
KR970006580A (ko) 1997-02-21
US5752642A (en) 1998-05-19
CA2180915A1 (fr) 1997-01-13

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