EP0301265A2 - Dispositif de tension et de guidage de fil pour des métiers à tricoter rectilignes - Google Patents

Dispositif de tension et de guidage de fil pour des métiers à tricoter rectilignes Download PDF

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Publication number
EP0301265A2
EP0301265A2 EP88110510A EP88110510A EP0301265A2 EP 0301265 A2 EP0301265 A2 EP 0301265A2 EP 88110510 A EP88110510 A EP 88110510A EP 88110510 A EP88110510 A EP 88110510A EP 0301265 A2 EP0301265 A2 EP 0301265A2
Authority
EP
European Patent Office
Prior art keywords
thread
support arm
lever
spring
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.)
Withdrawn
Application number
EP88110510A
Other languages
German (de)
English (en)
Other versions
EP0301265A3 (fr
Inventor
Ernst Goller
Fritz Walker
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.)
H Stoll GmbH and Co KG
Original Assignee
H Stoll GmbH and Co KG
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 H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
Publication of EP0301265A2 publication Critical patent/EP0301265A2/fr
Publication of EP0301265A3 publication Critical patent/EP0301265A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/44—Tensioning devices for individual threads

Definitions

  • the invention relates to a thread tensioning and guiding device for flat knitting machines, with a catch tensioner in the form of a spring-loaded pivot lever carrying a thread guide element, which, together with stationary thread guide elements and an adjustable thread brake connected upstream in the thread passage direction, on a pivotable one from an operating position into a threading position and vice versa stationary machine part bearing arm is arranged.
  • a thread tensioning device of the type mentioned above has already been proposed by patent application P 36 02 431.7.
  • the arrangement of the take-up tensioner in a pivotable support arm makes the thread guide members for pulling in a thread more easily accessible and results in an orderly, safe thread guidance even of an entire thread group on the needle bed ends of a flat knitting machine.
  • the object of the invention is to complete such a thread tensioning and guiding device in such a way that guiding and threading a thread become even safer or easier, and safe operation of the thread guiding, thread braking and thread tensioning elements, which the thread tensioning and - management device are assigned is achieved.
  • the object is achieved with a device of the type mentioned in the invention in that parts of the device are arranged on the stationary machine part so that they cooperate with elements arranged on the support arm in the operating position of the support arm or are accessible for adjustment through the support arm .
  • the pivoting support arm is kept low in weight, its parts can be arranged more clearly and made more versatile, and there is a spatial distribution of the device parts, which facilitates the accessibility of the individual parts and makes the thread path easier to control .
  • the parts arranged on the stationary machine part can advantageously be an adjusting motor for the thread brake, which interacts via a plug-in coupling with an adjusting shaft mounted in the supporting arm and / or a thread tension regulator controlling the adjusting motor, the adjusting device of which is accessible through an opening in the supporting arm, and / or guidance - and holding parts for the support arm.
  • the equipment parts relocated to the stationary machine part can be arranged there in a spatially clearer manner and can also be designed to be more reliable than in the case of a compact housing in the support arm.
  • the device parts arranged in the support arm can also be arranged more clearly and, in particular, can be designed to be more versatile and user-friendly.
  • the actuating shaft which can be coupled to the stationary adjustment motor and is mounted in the support arm, can be used to adjust a spring which acts on a pivoting lever which exerts an axial pressure on a disk-shaped braking member, as a result of which the width dimension of the support arm can be limited. This is of particular importance in view of the fact that a plurality of support arms are to be arranged closely next to one another at the end of the needle beds.
  • the device designed according to the invention has in the support arm a whole series of features important for an advantageous design and for an exact thread guidance for the thread take-up device, which are listed in the subclaims.
  • the thread tension regulator arranged on the stationary machine part with sensitive sensors and adjustable organs is also given an advantageous design in the device according to the invention by features which are listed in the subclaims.
  • FIG. 1 to 5 only show a support arm 10 which, together with a plurality of identical support arms arranged parallel to it, is pivotally mounted on a stationary machine part 20 about a common axis 11.
  • the Figures show the support arm 10 in its plant or operating position, in which it is locked by means of a latch 12 on the edge of an opening 21 of an adjacent wall 22 of the stationary machine part 20.
  • the support arm 10 can be pivoted away from the stationary machine part 20 in the direction of the arrow 13 shown in FIG. 1, so that on the one hand the back of the support arm 10 and on the other hand the stationary machine part 20 through openings in its wall 20 become accessible.
  • the pawl 12 has the same width as the opening 21 and thus simultaneously serves as a side guide element for the support arm 10.
  • a handle part 12.1 (Fig. 3, 4) of the pawl 12 is accessible from an indentation 14 on the front of the support arm 10.
  • the support arm 10 is provided with such an indentation 15 extending into the side walls of the support arm, through which the insertion of the thread into thread guide rollers 16 and 17 is facilitated, between which the thread 30 indicated in FIG. 3 with a dash-dotted line by the End of a swivel arm 18 consisting of a carbon fiber rod of the catch-up tensioner arranged thread guide eyelet 19 is passed through.
  • the indentation 15 also has rounded corners 15. 1 indicated in FIGS. 2 and 3, which additionally facilitate the gripping of the thread when threading or after a thread break in this area.
  • the thread passes from the thread guide roller 16 through a thread guide eyelet 23 of the support arm 10 and through the opening 21 in the wall 22 of the station När machine part 20 through to a thread tension regulator arranged there, which is described below in connection with FIGS. 6 and 7.
  • the support arm 10 has a thread guide eyelet 24 at its tip and an adjustable thread brake 25 below it.
  • the braking force of this disc brake 25 can be changed by hand on an adjusting knob 26 which is fastened on an adjusting shaft 27 best seen in FIG. 3 .
  • a servomotor 35 shown in FIG. 7 and arranged in the stationary machine part 20 can also act on this actuating shaft 27, the shaft 36 of which ends in a plug-in coupling part 37 which protrudes through an opening 28 in the wall 22 of the stationary machine part 20 and in the contact position of the support arm 10 engages in a mating coupling piece 29 fastened on the adjusting shaft 27.
  • the adjusting shaft 27 is coupled via an angular gear 31 to a screw spindle 32, with which a bearing part 33 is adjustable, to which one end of a tension spring 34 is fastened.
  • the other end of the tension spring 34 engages on one side on a lever 38, which is pivotably mounted in the support arm 10 about an axis 39 running parallel to the adjusting shaft 27 and presses with its free end 38.1 onto one of the two plates 25.1 of the thread brake 25.
  • By adjusting the bearing part 33 the force of the tension spring 34 acting on the lever 38 is changed.
  • the construction of the adjustment device allows the support arm 10 to be designed with a small width, as can be seen in FIG. 2.
  • a pointer arm 33.1 which projects through a front wall slot shown in FIG.
  • the support arm 10 is open in the area of the thread brake 25 and its adjusting device on its rear side facing the stationary machine part 20, so that these parts can be easily cleaned by blowing out when the support arm 10 is pivoted off.
  • the swivel arm of the thread take-up device consists of a carbon fiber rod 18, to the free end of which a rounded plate body 40 shown in FIG. 3 is fastened, into which the thread guide eyelet 19 is clipped interchangeably.
  • the carbon fiber rod 18 is fastened at its lower end via an angled connecting rod 41 to a lever arm 43 rotatably mounted in the support arm 10 about an axis 42.
  • the lever arm 43 carries a bolt 45 to which one end of a tension spring 46 is fastened, the other end of which is anchored to a tensioning slide 47 which is longitudinally adjustable in the housing of the support arm 10.
  • the tension spring 46 is guided in the region of its end fastened to the tensioning slide 47 via a deflection roller 48.
  • the cocking slide 47 which can be adjusted on a handle web 49, which projects through an opening on the front of the housing of the support arm 10 to the outside, is provided with locking teeth 50 which can engage in a corresponding toothed strip on the inside of the support arm 10.
  • the deflection of the tension spring 46 on the roller 48 ensures that the tensioning slide 47 with its locking teeth 50 is pulled against the toothed strip by the tension of the tension spring 46.
  • a recess 51 formed in the front wall of the support arm 10, in which a finger of the adjusting hand can be supported, which engages with another finger on the handle web 49 of the cocking slide 47.
  • the bolt 45 On the lever arm 43, the bolt 45, on which the tension spring 46 engages, is arranged with respect to the axis of rotation 42 so that the tension spring 46 is only effective with a small lever on the lever arm 43 in the normal position of the pivoting lever 18 of the thread take-up shown in FIG. 4 .
  • the lever arm, under which the tension spring 46 engages the lever arm 43 becomes ever larger.
  • sensors or switching elements of the control device of the flat knitting machine are arranged in a manner known per se, which interact with stationary control members or limit switches in order to trigger an error display and / or a switch-off of the machine in the event of an excessive swiveling out of the swivel lever 18 of the thread take-up caused by thread breakage .
  • Power lines 52 drawn in which end at two contact pins 53 and 54, which are arranged in a separate, hatched in Fig. 4 support arm extension 55 which is pivotally mounted on the support arm housing about the pivot axis 11 of the support arm 10 and to a conductor carrier rail 56 of the Flat knitting machine can be screwed on.
  • a resilient stop part 79 of the front housing wall is designated at the lower end of the support arm 10, against which the connecting rod 41 abuts in the event of a thread break and thereby experiences shock absorption.
  • a stop bar 57 which is adjustable depending on the type of thread 30 is arranged in the central region of the supporting arm 10. Its storage can be seen from the sectional view of FIG. 5. It is provided with a support body 58, in which spring-loaded locking balls 59 are arranged, which cooperate with locking bars 60 which are firmly connected to the support arm.
  • the stop bar 57 has at one end a groove 63 shown in FIG. 5, into which the carbon fiber rod 18 can be inserted when the catch tensioner is to be put out of operation.
  • each support arm 10 has a housing passage opening 64, the front end of which in FIG. 2 and the latter rear end in Fig. 6 is designated.
  • the housing passage opening 64 allows the insertion of a screwdriver up to an actuating shaft 65 mounted behind each support arm 10 in the wall 22 of the stationary housing part 20. It is connected via angular drive gearwheels 66 with a support in the stationary housing part 20 parallel to the assigned support arm 10 and shown in FIG.
  • Coupled connecting shaft 67 which in turn is coupled at its lower end via an angular gear 68 to an adjusting spindle 69, running parallel to the adjusting shaft 65, for a thread tension regulator.
  • the thread tension regulator has a thread deflection roller 70, which is arranged on a pivoting lever 71 shown in FIG. 7, and a stationary thread deflection roller 72 arranged behind it in the direction of thread passage.
  • a thread running sensor 73 is arranged between the pivotably arranged thread deflection roller 70 and the stationary thread deflection roller 72.
  • the pivoting lever 70 carrying the deflection roller 70 is rotatably supported about the axis 74 and is under the pretension of a tension spring 75, which is fastened at one end to the pivoting lever 71 and at the other end to a bearing part 76 which is adjusted by means of the adjusting spindle 69 Change the spring preload is adjustable.
  • the swivel lever 71 interacts in a manner known per se and not shown here with sensors which, depending on its swivel position, which depends on the tension of the thread 30 guided over the thread deflection roller 70, via the control device of the flat knitting machine, adjustment signals on the servomotor 35 for trigger the thread brake 25.
  • the adjustment plane of the pivot lever 71 carrying the thread deflection roller 70 runs perpendicular to the longitudinal direction of the associated support arm 10, so that the thread can be inserted into the thread tension regulator from above.
  • the insertion is promoted by tongue-like attachments 77 on the thread deflection rollers 70 and 72, which can be seen in FIG. 7 and each have an oblique thread engagement surface 78.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
EP19880110510 1987-07-25 1988-07-01 Dispositif de tension et de guidage de fil pour des métiers à tricoter rectilignes Withdrawn EP0301265A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3724707 1987-07-25
DE19873724707 DE3724707A1 (de) 1987-07-25 1987-07-25 Fadenspann- und -fuehrungseinrichtung fuer flachstrickmaschinen

Publications (2)

Publication Number Publication Date
EP0301265A2 true EP0301265A2 (fr) 1989-02-01
EP0301265A3 EP0301265A3 (fr) 1991-08-28

Family

ID=6332373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880110510 Withdrawn EP0301265A3 (fr) 1987-07-25 1988-07-01 Dispositif de tension et de guidage de fil pour des métiers à tricoter rectilignes

Country Status (4)

Country Link
US (1) US4869079A (fr)
EP (1) EP0301265A3 (fr)
JP (1) JPS6440646A (fr)
DE (1) DE3724707A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102191618A (zh) * 2011-04-13 2011-09-21 常熟市金龙机械有限公司 可调弹力夹纱机构

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032778A1 (de) * 1990-10-16 1992-04-23 Klaus Schoenherr Verfahren und vorrichtung zur erzielung einer konstanten spannung des fadens einer strick- oder wirkmaschine
DE19538312B4 (de) * 1995-10-14 2004-09-02 H. Stoll Gmbh & Co. Fadenkontrollvorrichtung für Flachstrickmaschinen
CN102704171B (zh) * 2012-06-08 2013-09-18 江苏金龙科技股份有限公司 电脑针织横编机的定向导纱机构

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1965363A (en) * 1930-10-28 1934-07-03 Abbott Machine Co Tension device
GB387433A (en) * 1931-10-30 1933-02-09 Ballington Hosiery Ltd Improvements in or relating to thread tensioning devices
GB611534A (en) * 1945-03-20 1948-11-01 Hemphill Co Improvements in or relating to yarn take-up devices in knitting machines
CH358043A (de) * 1957-07-30 1961-10-31 Benninger Ag Maschf Selbstregulierende Fadenbremse mit abtastendem Fühlorgan an einer Abspulvorrichtung, insbesondere an einem Zettelgatter
DE1272246B (de) * 1964-09-04 1968-07-04 Elitex Zavody Textilniho Webmaschine mit Entnahme des Schussfadens von ortsfesten Spulen und einer Einrichtung zum Steuern einer Schussfadenspann-, -brems- und abstellvorrichtung
US3575360A (en) * 1968-11-20 1971-04-20 Lawson Hemphill Universal compensating tension device
DE2060733A1 (de) * 1970-12-10 1972-06-22 Eduard Ott Elektronischer Garnzugregler
CH533564A (de) * 1972-01-05 1973-02-15 Madag Maschinen Und App Bau Di Fadenspanner, insbesondere für Flachstrickapparat
GB1481995A (en) * 1974-09-12 1977-08-03 Hepfer H Yarn tension guide
IT1168826B (it) * 1982-09-14 1987-05-20 Courtaulds Plc Meccanismo di alimentazione di filati
US4523440A (en) * 1982-10-08 1985-06-18 Institut Textile De France Regulating device for the length of thread absorbed by a knitting machine
DE3310132C1 (de) * 1983-03-21 1984-05-10 H. Stoll Gmbh & Co, 7410 Reutlingen Fadenbremse für Flachstrickmaschinen
DE3535672C1 (de) * 1985-10-05 1987-04-30 Stoll & Co H Flachstrickmaschine mit in eine Wartungsstellung verschiebbarer Schlittenanordnung
DE3602431A1 (de) * 1986-01-28 1987-07-30 Stoll & Co H Fadenspanneinrichtung fuer flachstrickmaschinen
DE3609719A1 (de) * 1986-03-21 1987-10-01 Schieber Universal Maschf Verfahren und vorrichtung zum beeinflussen der laenge und des maschenbildes von strickstuecken
GB2210901B (en) * 1987-10-10 1992-02-19 Shelton Alan Ltd Yarn feed apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102191618A (zh) * 2011-04-13 2011-09-21 常熟市金龙机械有限公司 可调弹力夹纱机构
CN102191618B (zh) * 2011-04-13 2012-11-21 江苏金龙科技股份有限公司 可调弹力夹纱机构

Also Published As

Publication number Publication date
EP0301265A3 (fr) 1991-08-28
DE3724707A1 (de) 1989-02-02
US4869079A (en) 1989-09-26
JPS6440646A (en) 1989-02-10

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