EP0231484B1 - Fadenspanneinrichtung für Flachstrickmaschinen - Google Patents

Fadenspanneinrichtung für Flachstrickmaschinen Download PDF

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Publication number
EP0231484B1
EP0231484B1 EP86117093A EP86117093A EP0231484B1 EP 0231484 B1 EP0231484 B1 EP 0231484B1 EP 86117093 A EP86117093 A EP 86117093A EP 86117093 A EP86117093 A EP 86117093A EP 0231484 B1 EP0231484 B1 EP 0231484B1
Authority
EP
European Patent Office
Prior art keywords
thread
tensioning device
carrier
thread guide
tensioner
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
Application number
EP86117093A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0231484A1 (de
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 EP0231484A1 publication Critical patent/EP0231484A1/de
Application granted granted Critical
Publication of EP0231484B1 publication Critical patent/EP0231484B1/de
Expired 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
    • 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
    • D04B15/48—Thread-feeding devices
    • D04B15/482—Thread-feeding devices comprising a rotatable or stationary intermediate storage drum from which the thread is axially and intermittently pulled off; Devices which can be switched between positive feed and intermittent feed

Definitions

  • the invention relates to a thread tensioning device for flat knitting machines, with thread guide elements, at least one thread brake and with a spring-loaded pivot lever arranged between two thread guide elements and carrying a thread guide element as a catch-up tensioner for each thread provided.
  • Thread tensioning devices of the type mentioned at the outset are known in manifold embodiments.
  • the threads In flat knitting machines, the threads must always be fed from the needle bed ends to the thread guides. Problems arise here with regard to thread guidance and in particular when inserting the threads if a larger number of threads have to be guided in the needle bed end area and if the flat knitting machine is also provided with a safety or soundproof covering in the needle bed end area.
  • the arrangement of several thread guide elements in rows makes it difficult to pull in the threads on the individual thread guide sections.
  • the invention has for its object to provide a thread tensioning device of the type mentioned in such a way that an orderly thread guide in the needle bed end area is ensured and the retraction of the individual threads into the thread guide members and up to the thread guide is facilitated.
  • a thread tensioning device of the type mentioned at the outset in that the catch tensioner and at least the thread guide element in front of and behind it are arranged on a common support which can be swiveled out of its operating position for threading, the carrier in the thread passage direction behind the
  • the take-up tensioner also has a thread clamp as a threading aid and to which the thread is fed via a thread guide roller that is stationary on the machine housing.
  • a separate pivotable carrier can be provided for each thread used and the carriers can be arranged side by side with a common pivot axis, the threads being fed via thread guide rollers also arranged side by side on a common stationary axis.
  • part of the thread guide elements provided in the thread running path in the area of the machine ends can be moved into a position in which they are easily accessible for an operator and make it easier for the operator to pull in the thread.
  • the thread clamp arranged behind the take-up tensioner By means of the thread clamp arranged behind the take-up tensioner, intermediate securing of a thread to be drawn in can be achieved while the carrier is pivoted back into its operating position.
  • This intermediate securing is particularly advantageous in the case of flat knitting machines provided with a protective wall in the area of the needle bed ends, where the pivotable supports can be arranged outside this cover wall according to the invention, and the cover wall has at least one opening through which the thread coming from a support enters and into which in the Operating position of the carrier protrudes the thread clamp of the carrier according to the invention.
  • the thread held in the thread clamp can now be grasped by the operator within the cover wall after the carrier has been pivoted back into its operating position and can be drawn on to the assigned thread guide.
  • the thread tensioning device designed according to the invention with its pivotable supports provides the further advantage that the pivotable supports with their thread guide elements can be prefabricated separately and attached to the flat knitting machine as prefabricated units. This allows a much more precise design of the individual thread guide members and associated electrical control devices than would be possible with a single assembly of these parts on a flat knitting machine.
  • the thread tensioning device for the individual threads on the pivotable carrier can have a switching stop that can be adjusted to change the maximum pivoting angle of the spring-loaded pivot lever of the catch-up tensioner, via which the machine is switched off. By adjusting the switching stop, the switch-off time can be set to a shorter response time, taking into account the thread return requirement.
  • the pivot lever of the catch-up tensioner can also act on an electrical circuit element which is effective as a function of the pivot angle.
  • the safe thread guidance is further favored by the construction of the thread guide rollers, which are arranged in the thread passage direction in front of the pivotable carriers and which can be pushed according to the invention onto a common axis which can be fastened to the machine frame with the interposition of profiled spacer disks, the spacer disks each having a radial arm which engages with a oblique locking finger and a through opening is provided and wherein the radial arms of all spacers are aligned with each other and the free end of the locking pin of a radial arm protrudes into the through opening of an adjacent radial arm.
  • the profiled spacers can be expediently designed with their radial arm and the locking finger as a one-piece body made of metal or plastic.
  • the locking finger covers the entire gap between two spacers, so that a thread cannot jump out of the roller conveyor.
  • the desired number of thread guide rollers can be attached to the machine frame and aligned as a unit with the following swiveling supports.
  • FIGS. 1 to 3 part of a side foot 10 of a flat knitting machine, the machine slide 12 reached at the end of the needle beds 11, a bobbin attachment board 13 and a yarn guide frame 14 can be seen.
  • a front cover wall 15 and a side cover wall 16 of a soundproofing lining of the flat knitting machine are shown schematically.
  • Fig. 1 shows the side cover wall 16 with dash-dotted lines in a lifting position 16a, in which it can be moved, mounted on slide rods 17.
  • the side cover wall 16 has a slot-shaped opening 18 on its upper side, through which threads running from a thread guide roller arrangement 19, which is arranged in a stationary manner on the yarn guide frame 14, can be guided directly behind the cover to a thread guide roller unit 21 arranged there.
  • Another opening 22 for a thread passage is located in the middle of the side cover wall 16.
  • a carrier 23 for different thread guide members is arranged on the outside of the housing wall 16, said carrier 23 around a pivot axis 24 arranged on the underside of the housing wall 16 and which is common to a plurality of carriers 23 arranged one behind the other. from an operating position shown in FIGS. 1 and 3 can be pivoted into a position 23a shown in FIG. 2.
  • Such a pivotable carrier 23 is shown individually in FIG. 4. It has a receiving opening for said pivot axis 24 at its lower end. At its upper and free end there is a thread guide eyelet 25, and a thread brake 26 is arranged below it.
  • the brake consists in a known manner of two resiliently opposed brake discs, between which the thread 20 is passed.
  • the braking force of the thread brake 26 can be changed by means of an electric servomotor 27 or an adjusting spindle ending in a handle knob 28.
  • Two further thread guide eyelets 29 and 30 are arranged below the thread brake 26, that is to say in the thread passage direction behind the thread brake 26, of which the thread guide eyelet 30 is fastened in a projecting part 23b of the pivotable carrier 23.
  • the thread guide eyes 29, 30 can also be replaced by ball-bearing thread rollers 56 and 57 shown in FIG. 3.
  • a thread guide eyelet 31 which is arranged at the free end of a pivot lever 32 which acts as a catch-up tensioner.
  • the catch tensioner pivot lever 32 is shown in Fig. 4 both in an operating position, in which it is held by the thread with its thread guide eyelet 31 between the thread guide eyes 29 and 30, as well as in its catch-up position 32a, in which it is by a behind its pivot point 33 attacking tension spring 34 is pulled.
  • Behind the thread guide eyelet 30, a thread clamp 35 is provided as an auxiliary element for clamping the thread end 20a when pulling a thread into the thread tensioning device.
  • the carrier projects with its projecting part 23b and thus with the thread guide eyelet 30 and the thread clamp 35 into the opening 22 of the housing wall 16.
  • a securing tab 37 is articulated at one end to a point 36 which has a longitudinal slot 38 into which a guide pin 39 fastened to the cover wall 16 projects.
  • the securing tab 37 serves to stabilize the carrier in its swiveled-out position 23a shown in FIG. 2.
  • an adjusting disk 40 is mounted, with which the catch-up tension, which is determined by the tension spring 34 and is effective on the pivoting lever 32 of the thread take-up device, can be adjusted.
  • a coaxial adjusting disk 41 is provided, with which a switching stop 42 or another switching element actuated by the pivot arm 32 after a certain pivot position has been exceeded can be adjusted.
  • the swivel lever 32 slides over, for example, a push button 43 formed from a potentiometer or contactless responsive step switches, with which the swivel position of the thread take-up device, that is to say the swivel position of the thread guide eyelet 31, can be detected for evaluation in an electronic device (not shown) for determining the thread length.
  • a push button 43 formed from a potentiometer or contactless responsive step switches, with which the swivel position of the thread take-up device, that is to say the swivel position of the thread guide eyelet 31, can be detected for evaluation in an electronic device (not shown) for determining the thread length.
  • FIG. 2 shows one of the pivotable carriers 23 in its pivoted-out position 23a, into which it is brought to pull in a thread 20 drawn off there by a feeder 44.
  • the thread 20 is first passed through the thread guide eyelet 25, through the subsequent thread brake 26 and through the following three thread guide eyelets 29, 31 and 30 and then held in the thread clamp 35 with its end 20a.
  • the carrier 23 is pivoted back into its operating position against the cover wall 16, its projecting part 23b with the thread guide eyelet 30 and the thread clamp 35 passing through the housing opening 22 behind the cover wall 16.
  • the operator can now grasp the held thread end 20a behind the cover wall 16, release it from the thread clamp 35 and continue to pull it up to a thread guide 45 of the flat knitting machine, which is only schematically indicated in FIG. 2.
  • Fig. 3 shows the carrier of the thread tensioning device in the operation of the flat knitting machine during a thread take-up operation, in which the thread 20 is returned by the deflected pivoting lever 32 from the thread guide 45 via the thread guide eyelet 30, while a pulling of thread by the feeder 44 is prevented by the thread brake 26 becomes.
  • the thread guide roller unit 19 consists of a central support body 46 provided with a longitudinal slot 47 for a clamping screw 48 for an axis 49 projecting on both sides.
  • ball-bearing thread guide rollers 50 are pushed one behind the other with the interposition of profiled spacers 51 and by on the threaded ends of the axis 49 are placed on nuts 52.
  • the profiled spacers 51 each have a radial arm 53, which is provided with an oblique locking finger 54 and a rectangular through opening 55. The spacers with the locking finger 54 are cast in one piece from metal or plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP86117093A 1986-01-28 1986-12-09 Fadenspanneinrichtung für Flachstrickmaschinen Expired EP0231484B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3602431 1986-01-28
DE19863602431 DE3602431A1 (de) 1986-01-28 1986-01-28 Fadenspanneinrichtung fuer flachstrickmaschinen

Publications (2)

Publication Number Publication Date
EP0231484A1 EP0231484A1 (de) 1987-08-12
EP0231484B1 true EP0231484B1 (de) 1989-02-22

Family

ID=6292752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86117093A Expired EP0231484B1 (de) 1986-01-28 1986-12-09 Fadenspanneinrichtung für Flachstrickmaschinen

Country Status (5)

Country Link
US (1) US4700553A (enrdf_load_stackoverflow)
EP (1) EP0231484B1 (enrdf_load_stackoverflow)
JP (1) JPS62184158A (enrdf_load_stackoverflow)
DE (1) DE3602431A1 (enrdf_load_stackoverflow)
ES (1) ES2007570B3 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3724707A1 (de) * 1987-07-25 1989-02-02 Stoll & Co H Fadenspann- und -fuehrungseinrichtung fuer flachstrickmaschinen
DE3917067A1 (de) * 1989-05-26 1990-11-29 Schieber Universal Maschf Flachstrickmaschine mit fadenfuehrungseinrichtungen
DE4308663A1 (de) * 1993-03-18 1994-09-22 Schieber Universal Maschf Textilmaschine
DE19538312B4 (de) * 1995-10-14 2004-09-02 H. Stoll Gmbh & Co. Fadenkontrollvorrichtung für Flachstrickmaschinen
EP1605085B1 (de) * 2004-06-12 2011-02-23 H. Stoll GmbH & Co. KG Fadenaufhol-Vorrichtung
KR100629975B1 (ko) 2005-05-04 2006-09-29 오홍주 인타샤 횡편기용 캠 캐리어
JP5252894B2 (ja) * 2007-11-21 2013-07-31 ノックスジャパン有限会社 自動横編機
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
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
CN102776699B (zh) * 2012-08-25 2013-12-11 宁波慈星股份有限公司 横机中的导纱勾纱装置
JP2023177483A (ja) * 2022-06-02 2023-12-14 株式会社島精機製作所 糸張力制御装置、ノッター装置及び横編機

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR747290A (fr) * 1932-03-08 1933-06-14 Perfectionnements aux tendeurs de fil pour métiers à tricoter, à tisser ou autres
GB1084568A (en) * 1965-09-04 1967-09-27 Cotton Ltd W Improvements in or relating to straight bar knitting machines
DE2126778A1 (en) * 1971-05-28 1972-12-07 Ulrich, Anton, 8000 München Circular knitting yard feed system - for different course lengths on different systems
CH533564A (de) * 1972-01-05 1973-02-15 Madag Maschinen Und App Bau Di Fadenspanner, insbesondere für Flachstrickapparat
JPS5244312B2 (enrdf_load_stackoverflow) * 1973-05-11 1977-11-07
US3962890A (en) * 1974-05-13 1976-06-15 Universal Maschinenfabrik Dr. Rudolf Schieber Kg Straight knitting machine comprising rotating sliding heads
GB1601579A (en) * 1977-11-10 1981-10-28 Courtaulds Ltd Yarn take-up mechanism
US4353227A (en) * 1980-04-30 1982-10-12 Kayser-Roth Hosiery, Inc. Tension indicator for elastomeric yarn
GB2127046B (en) * 1982-09-14 1986-03-05 Courtaulds Plc Yarn feed mechanism
DE3332146A1 (de) * 1982-09-14 1984-03-15 Courtaulds Plc, London Garnzufuehrungseinrichtung fuer eine strickmaschine
FR2534286A1 (fr) * 1982-10-08 1984-04-13 Inst Textile De France Dispositif de regulation de la longueur de fil absorbee par un metier a tricoter
DE3243315C1 (de) * 1982-11-23 1984-06-14 Universal Maschinenfabrik Dr. Rudolf Schieber GmbH & Co KG, 7081 Westhausen Flachstrickmaschine mit Spulenbrett
DE3316078A1 (de) * 1983-05-03 1984-11-08 SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH, 7470 Albstadt Fadenzufuhreinrichtung fuer strick- und wirkmaschinen

Also Published As

Publication number Publication date
JPS62184158A (ja) 1987-08-12
DE3602431A1 (de) 1987-07-30
ES2007570B3 (es) 1994-07-01
DE3602431C2 (enrdf_load_stackoverflow) 1987-10-29
US4700553A (en) 1987-10-20
EP0231484A1 (de) 1987-08-12
JPH028060B2 (enrdf_load_stackoverflow) 1990-02-22

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