EP0448917B1 - Nockenelement zur Verbesserung von Antriebsketten in Strickmaschinen - Google Patents

Nockenelement zur Verbesserung von Antriebsketten in Strickmaschinen Download PDF

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Publication number
EP0448917B1
EP0448917B1 EP90830336A EP90830336A EP0448917B1 EP 0448917 B1 EP0448917 B1 EP 0448917B1 EP 90830336 A EP90830336 A EP 90830336A EP 90830336 A EP90830336 A EP 90830336A EP 0448917 B1 EP0448917 B1 EP 0448917B1
Authority
EP
European Patent Office
Prior art keywords
male portion
lengths
cam element
male
female
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
EP90830336A
Other languages
English (en)
French (fr)
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EP0448917A1 (de
Inventor
Zorini Luigi Omodeo
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.)
Comez SpA
Original Assignee
Comez SpA
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Filing date
Publication date
Application filed by Comez SpA filed Critical Comez SpA
Publication of EP0448917A1 publication Critical patent/EP0448917A1/de
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Publication of EP0448917B1 publication Critical patent/EP0448917B1/de
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Expired - Lifetime 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
    • D04B15/94—Driving-gear not otherwise provided for
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D04B27/26—Shogging devices therefor

Definitions

  • the present invention relates to a cam element for the accomplishment of driving chains, currently named “Glieder chains” in knitting machines of the type comprising: a male portion of a flat plate-like conformation; a female portion having an engagement seat disposed in alignment with said male portion and into which the male portion of a contiguous cam element can be fitted, which male portion is adapted to be oscillatably linked to the female portion by a pivot pin extending through respective through holes formed in said male and female portions.
  • Glieder chains consisting of cam elements linked together one after the other so as to form an endless loop, are operatively engaged on a driving wheel and optionally on one or more idler rollers mounted in the knitting machine structure.
  • each cam element on its lateral profile exhibits a base side having an arcuate extension and adapted to abut against the bottom of the respective race provided on the driving wheel, and a top side which is suitably shaped depending upon the movement to be transmitted to the corresponding cam follower.
  • GB-A 819 838 which describes one type of Glieder chain currently used
  • a substantially plate-like male portion and a female portion provided with an engagement seat substantially matching the shape of the male portion and disposed in alignment therewith are defined on the longitudinal extension of each cam element.
  • the mutual engagement of the different cam elements takes place by fitting the male portion of one element in the engagement seat provided in the female portion of another element and afterwards mutually hinging the two elements by means of a pivot pin passing through suitable holes formed in the male and female portions respectively of each cam element.
  • each pin suitably sized in length, should link two cam elements of each of the Gleider chains present in the knitting machine.
  • each pivot pin operatively engages with a grip notch formed sideways to the driving wheel races in order to ensure the constant dragging of the Glieder chains, without the risk that undesired slippings may occur.
  • the manufacture of the extruded bar needs the semifinished product to undergo many passages through as many extruders and therefore involves the use of very complicated extrusion equipments which results in high costs.
  • the reduced extension of the engagement seat also limits the possibility of reducing the weight of the cam element and therefore of the Glieder chain assembly used in the knitting machine. Obviously this fact brings about a greater energy consumption when the Glieder chains are taken in rotation during the operation of the knitting machine.
  • Glieder chains are also available which consist of an alternate succession of first cam elements substantially comprised of a shaped plate, and second cam elements comprised of a pair of shaped plates the ends of which are disposed in side-by-side relation and linked to the ends of the first cam elements contiguous thereto.
  • the Glieder chains in which this type of cam elements are used are also adapted to be wrapped on idler rollers of reduced sizes in an opposite way relative to their training direction on the driving wheel.
  • manufacturing chains of the above type is rather hard and the assembling of a much greater number of components than in the previously described Glieder chains is required.
  • the main object of the present invention is substantially to solve the problems of the known art by providing a cam element for Glieder chains which can be manufactured in a very simple and cheap manner and is adapted to form chains which can be wrapped also on idler rollers of reduced diameters in an opposite way relative to the training direction of the chain itself on the driving wheel.
  • a cam element for the accomplishment of Glieder chains in knitting machines characterized in that said male portion and female portion are formed by a suitably bent and shaped plate-like element exhibiting, on its longitudinal extension: two first rectilinear lengths consecutively connected by a U-shaped bending and disposed parallelly to each other in side by side relation in order to define said male portion; two connecting lengths diverging symmetrically from the respective first rectilinear lengths; and two second rectilinear lengths each extending parallelly from one of said connecting lengths in order to define said female portion.
  • a cam element for the accomplishment of Glieder chains in knitting machines in accordance with the present invention has been generally identified by reference numeral 1.
  • the cam element conventionally comprises a male portion 2 of flat plate-like conformation and a female portion 2 provided with an engagement seat 4 disposed in alignment with the male portion 2.
  • the cam element 1 on its lateral profile exhibits a base side 1a having an arcuate extension and arranged so as to abut against the bottom of a race 6 exhibited by a driving wheel 7 installed on a knitting machine not shown as not of importance to the ends of the invention.
  • the driving wheel 7, operated in rotation is conventionally arranged so as to ensure the dragging of a Glieder chain B formed with the linkage of a number of cam elements 1 in succession.
  • a top side 1b which, suitably shaped depending upon requirements, is designed to slidably act on a cam follower, not shown as known per se, operating close to the driving wheel 7 in order to transmit given movements to one or more members of the knitting machine connected thereto.
  • the mutual engagement of the single cam elements 1 is achieved by fitting the male portion 2 of each cam element 1 into the engagement seat 4 provided in the female portion 3 of the contiguous cam element.
  • pins 9 passing through holes 10, 11 formed in the male portion 2 and female portion 3 respectively, in order to link the different cam elements 1 to one another.
  • pins 9 as well as the driving wheel 7 are designed to engage other Glieder chains not shown as not of importance to the ends of the invention, adapted to be fitted in auxiliary races 6a exhibited by the driving wheel itself.
  • each pin 9 lends itself to be operatively engaged by grip notches 12 formed on the driving wheel 7 sideways to the races 6, 6a, in order to ensure the correct dragging of the Glieder chains B by the driving wheel itself.
  • each cam element 1 consist of at least a plate-like element suitably bent and shaped.
  • the cam element 1 consists of a single plate-like element 13 which, by appropriate bending operations known per se and therefore not described, is so shaped that on its longitudinal extension it exhibits two first rectilinear lengths 14 consecutively connected by a U-shaped bending 15 and disposed parallelly to each other in side by side relation in order to define the male portion 2.
  • Symmetrically diverging from the first rectilinear lengths 14 are two short connecting lengths 16 followed by two second rectilinear lengths 17 extending parallelly to each other so as to define the female portion 3.
  • the first rectilinear lengths 14 match each other and are made integral by at least a welding area 18.
  • the U-shaped bending connecting the first rectilinear lengths 14 to each other may also be made so that said first rectilinear lengths are parallelly spaced apart from each other by a predetermined amount.
  • a different embodiment of the cam element has been generally identified by 21. It is substantially identical to the one shown in Fig. 1 apart from the fact that in this case the presence of the U-shaped bending 15 connecting the first rectilinear lengths 14 to each other is not provided. Therefore the cam element 21 is formed with a pair of suitably bent and shaped plate-like elements, the first rectilinear length 14 of one plate-like element 13 being disposed parallelly to and in side by side relation with the first rectilinear length of the other plate-like element 13 to which it is fixedly engaged preferably by means of welding areas 18.
  • the cam element 1, 21 is so structured that its engagement seat 4 has a length "l" corresponding to the whole length of the female portion 3, the amount of which is at least half the amount of the overall length "L” of the cam element itself. Due to this particular expedient the consecutively hinged cam elements 1, 21 are free to carry out very wide oscillations about the axes of the respective pivot pins 9. Therefore the Glieder chain 8 consisting of the cam elements of the invention will be adapted to be wrapped on idler rollers having a very reduced diameter in the opposite way relative to the training direction of the driving wheel 7. For the sake of clarity this operating condition of the Glieder chain 8 is shown in Fig. 4.
  • the present invention attains the intended purposes.
  • the manufacture of the cam elements 1, 21 in accordance with the invention merely involves continuous bending operations carried out on a sheet, followed by optional welding and subsequent cutting so as to obtain a plurality of shaped lengths which will then be submitted to conventional mechanical workings in order to define the base side 1a and top side 1b thereof.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Buckles (AREA)

Claims (3)

  1. Nockenelement (1) zur Verbesserung von Antriebsketten, den sogenannten "Gliederketten" (8) in Strickmaschinen, bestehend aus
    - einem Zungenteil (2) mit flacher, blattförmiger Ausbildung;
    - einem Nutenteil (3) mit einer Eingriffsaufnahme (4), die mit dem Zungenteil (2) ausgerichtet ist und in der der Zungenteil (2) eines angrenzenden Nockenelementes einführbar ist, wobei der Zungenteil (2) mit dem Nutenteil (3) mittels eines Bolzens (9) verschwenkbar verbunden werden kann, der sich durch jeweilige, durchgehende Bohrungen (10, 11) erstreckt, die in den genannten Zungen (2) - und Nuten (3) - Teil ausgenommen sind,
    dadurch gekennzeichnet, daß der Zungenteil (2) und der Nutenteil (3) durch ein plattenförmiges Element (13) erhalten werden, das, passend umgebogen und geformt, in seiner Längsabwicklung:
    - zwei erste gerade Abschnitte (14), die nacheinander mittels einer "U"-förmigen Kröpfung (15) verbunden und zueinander parallel anliegen, um den Zungenteil (2) festzulegen;
    - zwei Verbindungsabschnitte (16), die symmetrisch von den jeweiligen ersten, geraden Abschnitten (14) aus auseinandergehen; und
    - zwei zweite gerade Abschnitte (17), die sich jeweils von einem der Verbindungsabschnitte (16) erstrecken, um den Nutenteil (3) festzulegen,
    aufweist.
  2. Nockenelement (21) zur Ausführung von Antriebsketten, den sogenannten "Gliederketten" (8) für Strickmaschinen, bestehend aus:
    - einem Zungenteil (2), mit flacher, blattförmiger Ausbildung;
    - einem Nutenteil (3) mit einer Eingriffsaufnahme (4), die mit dem Zungenteil (2) ausgerichtet ist und in die der Zungenteil (2) eines anliegenden Nockenelementes einführbar ist, wobei der Zungenteil (2) mit dem Nutenteil (3) mittels eines Bolzens (9) verschwenkbar verbunden werden kann, der sich durch jeweilige, durchgehende Bohrungen (10, 11) erstreckt, die aus dem Zungenteil (2) und Nutenteil (3) ausgenommen sind,
    dadurch gekennzeichnet, daß der Zungenteil (2) und der Nutenteil (3) durch ein Paar von blattförmigen Elementen (13) erhalten werden, die, zweckmäßig umgebogen und geformt, in ihrer Längsabwicklung:
    - zwei erste gerade Abschnitte (14), die parallel zueinander anliegen und starr miteinander eingreifen, um den Zungenabschnitt (2) festzulegen;
    - zwei Verbindungsabschnitte (16), die symmetrisch von den jeweiligen ersten geraden Abschnitten (14) aus auseinandergehen;
    und
    - zwei zweite geradlinige Abschnitte (17), die sich jeweils parallel von einem der Verbindungsabschnitte (16) erstrecken, um den Nutenteil (3) festzulegen,
    aufweisen.
  3. Nockenelement (1, 21) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die ersten geradlinigen Abschnitte (14) aufeinandergepaßt sind und durch Verschweißung (18) miteinander befestigt sind.
EP90830336A 1990-03-30 1990-07-19 Nockenelement zur Verbesserung von Antriebsketten in Strickmaschinen Expired - Lifetime EP0448917B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1987590 1990-03-30
IT19875A IT1239508B (it) 1990-03-30 1990-03-30 Elemento a camma per la realizzazione di catene glider per macchine tessili

Publications (2)

Publication Number Publication Date
EP0448917A1 EP0448917A1 (de) 1991-10-02
EP0448917B1 true EP0448917B1 (de) 1994-09-07

Family

ID=11161988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90830336A Expired - Lifetime EP0448917B1 (de) 1990-03-30 1990-07-19 Nockenelement zur Verbesserung von Antriebsketten in Strickmaschinen

Country Status (4)

Country Link
EP (1) EP0448917B1 (de)
DE (1) DE69012312D1 (de)
ES (1) ES2060129T3 (de)
IT (1) IT1239508B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104630983B (zh) * 2015-03-11 2016-11-09 福建华峰新材料有限公司 一种双针床经编机的花纹链块排列工艺及其梳栉横移机构
CN114059226B (zh) * 2021-11-05 2022-10-28 江苏苏美达纺织有限公司 经编横移装置及经编机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB819838A (en) * 1956-08-07 1959-09-09 Kidde Mfg Co Inc Link for pattern cam mechanism
BE757669A (fr) * 1970-02-17 1971-04-01 Mecmor Spa Chaine de commande pour machines a fabriquer les bas, machines a tricoter, etc.
FR2540208B1 (fr) * 1983-01-31 1987-12-18 Laphi Moules Maillon de chaine monobloc a organes d'articulation incorpores

Also Published As

Publication number Publication date
ES2060129T3 (es) 1994-11-16
IT9019875A1 (it) 1991-09-30
EP0448917A1 (de) 1991-10-02
IT1239508B (it) 1993-11-03
IT9019875A0 (it) 1990-03-30
DE69012312D1 (de) 1994-10-13

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