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EP0144598B1 - Needle bed for a circular knitting machine - Google Patents

Needle bed for a circular knitting machine Download PDF

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Publication number
EP0144598B1
EP0144598B1 EP84111836A EP84111836A EP0144598B1 EP 0144598 B1 EP0144598 B1 EP 0144598B1 EP 84111836 A EP84111836 A EP 84111836A EP 84111836 A EP84111836 A EP 84111836A EP 0144598 B1 EP0144598 B1 EP 0144598B1
Authority
EP
European Patent Office
Prior art keywords
segment
cylinder
bars
needle bed
recesses
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
EP84111836A
Other languages
German (de)
French (fr)
Other versions
EP0144598A1 (en
Inventor
Stefan Krall
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.)
Cambio Ragione Sociale saxonia Umformtechnik GmbH
Original Assignee
Saxonia Franke GmbH and Co
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 Franke GmbH and Co filed Critical Saxonia Franke GmbH and Co
Publication of EP0144598A1 publication Critical patent/EP0144598A1/en
Application granted granted Critical
Publication of EP0144598B1 publication Critical patent/EP0144598B1/en
Expired legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B15/00Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/14Needle cylinders

Definitions

  • the invention relates to a needle bed for circular knitting and circular knitting machines according to the features of the preamble in claim 1.
  • a needle bed of this type is known from US Pat. No. 3,290,900, where two webs of greater height and a web of lower height lying between these webs form a needle guide channel.
  • Several needle guide channels are combined into a segment which has an L-shaped segment carrier strip on the bottom.
  • the recesses in the segment carrier strip in connection with the spaces between the needle guide channels are poured out to bond the segment with metal.
  • the segment carrier strip has threaded holes on the bottom for engaging clamping screws in cylinder bores.
  • the object of the invention is to significantly simplify the segment structure of the individual segments to be clamped to the cylinder in a needle bed of the type mentioned.
  • the machine cylinder 11 is of relatively simple design and can be machined extremely precisely and precisely on a lathe. Insofar as grinding work is required, it can also be carried out in a simple manner, which ensures rational and cost-effective production of the machine cylinder.
  • the needle bed itself is formed by the segments 12 fastened to the circumference of the cylinder, which are clamped to the latter and bear tightly against one another.
  • the individual needle bed segments 12 consist of a multiplicity of flat webs 13 and 14, of which the webs 13 have a greater height in the radial direction than the lower webs 14, which alternate with one another in a regular sequence, so that a web is formed in each case between webs 13 which are considered in which the needles are stored and can be moved up and down; they slide on the outer surface of the flat lower webs 14.
  • the webs 13 and 14 are made of a suitable material that is easy to harden so that the guideways for the needles can have any desired surface hardness.
  • each needle bed segment 12 In order to firmly connect the individual, closely abutting surfaces of the steps 13 and 14 of each needle bed segment 12 to form a compact element, there are recesses 15 forming grooves on the underside facing the cylinder 11, into which a metal in the liquid state or possibly also Plastic is poured or injected, which material after solidification forms bars or strips 16 extending across the entire width of the segments and causes the webs 13 and 14 to hold together.
  • parallel keys or strips 20 are arranged on the underside of the segments, which engage in grooves 21 arranged on the cylinder 11. Furthermore, stop surfaces 22 and 23 can be provided on the cylinders or on the segments 12, which abut one another.
  • the webs 13 are advantageously at their upper end 24 on the inside 25 facing the axis of the cylinder 11 in the region of the
  • the knock-off position of the needles is provided with a recess 26, which is intended for receiving a wire 27 of a wire ring made of hardened material, which serves to place the needles in the knock-off area and as a knock-off edge.
  • This measure makes it possible to obtain a particularly uniform and better mesh structure than before.

Landscapes

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

Description

Die Erfindung betrifft ein Nadelbett für Rundstrick- und Rundwirkmaschinen nach den Merkmalen des Oberbegriffs in Anspruch 1.The invention relates to a needle bed for circular knitting and circular knitting machines according to the features of the preamble in claim 1.

Ein Nadelbett dieser Art ist durch die US-A-3 290 900 bekannt, wo jeweils zwei Stege größerer Höhe und ein zwischen diesen Stegen liegender Steg geringerer Höhe einen Nadelführungskanal bilden. Mehrere Nadelführungskanäle sind zu einem Segment zusammengefaßt, das bodenseitig eine L-förmige Segmentträgerleiste aufweist. Die Ausnehmungen in der Segmentträgerleiste in Verbindung mit den Zwischenräumen zwischen den Nadelführungskanälen werden zum Verbund des Segments mit Metall ausgegossen. Die Segmentträgerleiste besitzt bodenseitig Gewindebohrungen zum Eingriff von Spannschrauben in Zylinderbohrungen.A needle bed of this type is known from US Pat. No. 3,290,900, where two webs of greater height and a web of lower height lying between these webs form a needle guide channel. Several needle guide channels are combined into a segment which has an L-shaped segment carrier strip on the bottom. The recesses in the segment carrier strip in connection with the spaces between the needle guide channels are poured out to bond the segment with metal. The segment carrier strip has threaded holes on the bottom for engaging clamping screws in cylinder bores.

Der Aufbau derartiger Segmente ist relativ aufwendig und komplex.The construction of such segments is relatively complex and complex.

Aufgabe der Erfindung ist es, bei einem Nadelbett der eingangs genannten Art den Segmentaufbau der am Zylinder festzuspannenden einzelnen Segmente wesentlich zu vereinfachen.The object of the invention is to significantly simplify the segment structure of the individual segments to be clamped to the cylinder in a needle bed of the type mentioned.

Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst, wobei es jedoch durch die GB-A-249 996 grundsätzlich bekannt ist, die einzelnen Stege der Segmente in unterschiedlicher Höhe ohne Zwischenräume dicht aneinanderliegend in abwechselnder Aufeinanderfolge anzuordnen. Die Merkmale der Unteransprüche betreffen vorteilhafte Ausführungen der Erfindung.This object is achieved according to the invention with the characterizing features of claim 1, but it is fundamentally known from GB-A-249 996 to arrange the individual webs of the segments in different heights in alternating succession at different heights without gaps. The features of the subclaims relate to advantageous embodiments of the invention.

Die bekannte L-förmige Segmenthalterungseinrichtung nach der Lehre der Erfindung durch z. B. zwei im Querschnitt schwalbenschwanzförmige Metallstäbe zu ersetzen, die in die frei von Verbundmaterial gehaltenen schwalbenschwanzförmigen Segmentausnehmungen eingesetzt werden, erlaubt einen wesentlich einfacheren Aufbau der am Zylinder festzuspannenden einzelnen Segmente.The known L-shaped segment holder device according to the teaching of the invention by z. B. to replace two dovetail-shaped metal bars in cross section, which are used in the dovetail-shaped segment recesses kept free of composite material, allows a much simpler structure of the individual segments to be clamped to the cylinder.

In der Zeichnung sind bevorzugte Ausführungsbeispiele nach der Erfindung schematisch dargestellt. Es zeigt:

  • Fig. 1 eine Aufsicht auf einen Quadranten des Zylinders einer Rundstrick- bzw. -wirkmaschine, der an seinem Umfang mit den Nadelbettsegmenten bestückt ist,
  • Fig. 2 einen Querschnitt durch den Zylinder gemäß Fig. 1 und ein an dessen Umfang befestigtes Nadelbettsegment, und
  • Fig. 3 einen Schnitt durch den Zylinder einer Rundstrick- bzw. -wirkmaschine, welcher mit einem modifizierten Nadelbett gemäß der Erfindung bestückt ist.
In the drawing, preferred embodiments according to the invention are shown schematically. It shows:
  • 1 is a plan view of a quadrant of the cylinder of a circular knitting or knitting machine, which is equipped on its circumference with the needle bed segments,
  • FIG. 2 shows a cross section through the cylinder according to FIG. 1 and a needle bed segment attached to its circumference, and
  • Fig. 3 shows a section through the cylinder of a circular knitting or knitting machine, which is equipped with a modified needle bed according to the invention.

Wie aus Fig. 1 und 2 hervorgeht, ist der Maschinenzylinder 11 relativ einfach gestaltet und kann auf einer Drehbank außerordentlich exakt und genau bearbeitet werden. Soweit Schleifarbeiten erforderlich sind, lassen sich diese gleichfalls in einfacher Weise ausführen, wodurch eine rationelle und kostengünstige Herstellung des Maschinenzylinders gewährleistet ist. Das Nadelbett selbst wird von den am Umfang des Zylinders 11 befestigten Segmenten 12 gebildet, die an diesem festgespannt sind und dicht aneinander anliegen.As can be seen from FIGS. 1 and 2, the machine cylinder 11 is of relatively simple design and can be machined extremely precisely and precisely on a lathe. Insofar as grinding work is required, it can also be carried out in a simple manner, which ensures rational and cost-effective production of the machine cylinder. The needle bed itself is formed by the segments 12 fastened to the circumference of the cylinder, which are clamped to the latter and bear tightly against one another.

Die einzelnen Nadelbettsegmente 12 bestehen aus einer Vielzahl flacher Stege 13 und 14, von welchen die Stege 13 in radialer Richtung eine größere Höhe aufweisen als die niedrigereren Stege 14, die in regelmäßiger Folge einander abwechseln, so daß jeweils zwischen beachbarten Stegen 13 eine Bahn gebildet wird, in welcher die Nadeln gelagert und auf- und niederbewegbar sind; hierbei gleiten sie auf der äußeren Oberfläche der flachen niedrigereren Stege 14. Die Stege 13 und 14 bestehen aus einem geeigneten Werkstoff, der sich einfach härten läßt, so daß die Führungsbahnen für die Nadeln jede gewünschte Oberflächenhärte aufweisen können. Um die einzelnen, dicht aneinander anliegenden Flächen der Steqe 13 und 14 eines jeden Nadelbettsegments 12 fest zu einem kompakten Element miteinander zu verbinden, befinden sich auf der dem Zylinder 11 zugekehrten Unterseite Nuten bildende Ausnehmungen 15, in welche ein Metall in flüssigem Zustand oder gegebenenfalls auch Kunststoff eingegossen bzw. eingespritzt wird, welches Material nach dem Erstarren sich über die ganze Breite der Segmente erstreckende Stäbe oder Leisten 16 bildet und den Zusammenhalt der Stege 13 und 14 bewirkt.The individual needle bed segments 12 consist of a multiplicity of flat webs 13 and 14, of which the webs 13 have a greater height in the radial direction than the lower webs 14, which alternate with one another in a regular sequence, so that a web is formed in each case between webs 13 which are considered in which the needles are stored and can be moved up and down; they slide on the outer surface of the flat lower webs 14. The webs 13 and 14 are made of a suitable material that is easy to harden so that the guideways for the needles can have any desired surface hardness. In order to firmly connect the individual, closely abutting surfaces of the steps 13 and 14 of each needle bed segment 12 to form a compact element, there are recesses 15 forming grooves on the underside facing the cylinder 11, into which a metal in the liquid state or possibly also Plastic is poured or injected, which material after solidification forms bars or strips 16 extending across the entire width of the segments and causes the webs 13 and 14 to hold together.

Zur Befestigung der einzelnen Segmente an dem Zylinder dienen Spannkeile 17, welche in schwalbenschwanzförmigen Nuten 18 auf der Unterseite der Nadelbettsegmente 12 eingesetzt sind und die mittels Spannschrauben 19 gegen das Zentrum des Zylinders gezogen werden.Clamping wedges 17, which are inserted in dovetail-shaped grooves 18 on the underside of the needle bed segments 12 and which are pulled against the center of the cylinder by means of clamping screws 19, are used to fasten the individual segments to the cylinder.

Um die Nadelbettsegmente 12 am Zylinder 11 exakt zu zentrieren, damit diese eine exakte Lage einnehmen, sind an der Unterseite der Segmente Paßfedern bzw. -leisten 20 angeordnet, welche in am Zylinder 11 angeordnete Nuten 21 eingreifen. Fernerhin können Anschlagflächen 22 bzw. 23 an den Zylindern bzw. an den Segmenten 12 vorgesehen sein, welche aneinander anliegen.In order to exactly center the needle bed segments 12 on the cylinder 11 so that they occupy an exact position, parallel keys or strips 20 are arranged on the underside of the segments, which engage in grooves 21 arranged on the cylinder 11. Furthermore, stop surfaces 22 and 23 can be provided on the cylinders or on the segments 12, which abut one another.

Bei einer derartigen Konstruktion des Nadelbetts von Zylindern von Rundstrick- bzw. -wirkmaschinen ist es in einfacher Weise möglich, bei Schäden an bestimmten Stellen des Nadelbetts das davon betroffene Nadelbettelement 12 rasch auszuwechseln, ohne daß es, wie bisher, notwendig ist, den gesamten Nadelbettzylinder durch einen neuen zu ersetzen. s_. Außerdem ist durch die getrennte Fertigung des Zylinders 11 einerseits und des aus Segmenten 12 zusammengesetzten Nadelbetts andererseits eine wesentlich einfachere und kostengünstigerere Produktion des Nadelbettzylinders möglich.With such a construction of the needle bed of cylinders of circular knitting machines, it is possible in a simple manner to quickly replace the affected needle bed element 12 in the case of damage to certain locations on the needle bed without, as previously, the entire needle bed cylinder being necessary to be replaced by a new one. s_. In addition, the separate manufacture of the cylinder 11, on the one hand, and the needle bed composed of segments 12, on the other hand, enables a substantially simpler and more cost-effective production of the needle bed cylinder.

Vorteilhafterweise sind die Stege 13 an ihrem oberen Ende 24 an der der Achse des Zylinders 11 zugekehrten Innenseite 25 im Bereich der Abschlagstellung der Nadeln mit einer Ausnehmung 26 versehen, welche für die Aufnahme eines Drahtes 27 eines Drahtrings aus gehärtetem Werkstoff bestimmt ist, welcher der Anlage der Nadeln im Abschlagbereich und als Abschlagkante dient. Diese Maßnahme ermöglicht es, ein besonders gleichmäßiges und besseres Maschenbild als bisher zu erhalten.The webs 13 are advantageously at their upper end 24 on the inside 25 facing the axis of the cylinder 11 in the region of the The knock-off position of the needles is provided with a recess 26, which is intended for receiving a wire 27 of a wire ring made of hardened material, which serves to place the needles in the knock-off area and as a knock-off edge. This measure makes it possible to obtain a particularly uniform and better mesh structure than before.

Claims (3)

1. Needle bed for circular knitting and circular weaving machines, having a cylinder and level bars mounted on the cylinder to form narrow guide channels in which the knitting or weaving needles may be mounted so as to be movable in an axial direction, in which, in order to form a needle bed evenly distributed over the periphery of the cylinder, first bars have a greater height in the radial direction than second bars and two bars which have a greater height and a bar disposed between them of less height respectively form guide channels, and in which several consecutive bars respectively form a compact segment which has, in the peripheral direction of the cylinder, segment recesses extending over the whole width of the segment and filled with metal or plastic as a segment binding material, and connected to the base of said segment on the cylinder side is a segment carrier device in the form of a strip, extending over the whole width of the segment, for the purpose of securing the segment to the cylinder with tightening threaded devices which are supported on inside surfaces of the cylinder, said segment carrier device having threaded holes in its connection surface on the cylinder side for the engagement of the tightening threaded devices characterised in that the individual bars (13, 14) of differing heights of a segment (12), which bars closely abut one another without interspaces and alternate in regular succession, have on the base side several dovetailed notches respectively to form several parallel segment recesses (15, 18) dovetailed in cross-section, of which first segment recesses (15) are filled with the segment binding material (16) and second segment recesses (18) serve for the insertion of metal rods (17) correspondingly designed dovetailed in cross-section, which collectively form the segment carrier device, said metal rods each having the threaded holes on the cylinder side.
2. Needle bed according to claim 1, characterised in that in order to centre and fix the position of the segments (12), the individual bars (13, 14) have on the base side first projections to form adjusting springs or strips (20) extending over the width of a segment (12) for engagement in cooperating grooves (21) and/or on the end side second projections to form stop faces (22) extending over the width of the segment (12) for abutment against cylinder stop faces (23).
3. Needle bed according to claim 1 or 2, characterised in that the bars (13) have at their top end (24) on the inside (25) in the area of the striking off position of the needles a recess (26) . which is provided to accommodate a wire (27), made of hardened material, which serves to locate the needles and acts as the striking off edge.
EP84111836A 1983-10-07 1984-10-03 Needle bed for a circular knitting machine Expired EP0144598B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3336594 1983-10-07
DE3336594A DE3336594A1 (en) 1983-10-07 1983-10-07 NEEDLE BED FOR CIRCULAR KNITTING AND KNITTING MACHINES

Publications (2)

Publication Number Publication Date
EP0144598A1 EP0144598A1 (en) 1985-06-19
EP0144598B1 true EP0144598B1 (en) 1988-04-27

Family

ID=6211299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111836A Expired EP0144598B1 (en) 1983-10-07 1984-10-03 Needle bed for a circular knitting machine

Country Status (8)

Country Link
EP (1) EP0144598B1 (en)
JP (1) JPS61500127A (en)
CS (1) CS261221B2 (en)
DD (1) DD232727A5 (en)
DE (2) DE3336594A1 (en)
ES (1) ES536892A0 (en)
SU (1) SU1449019A3 (en)
WO (1) WO1985001756A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20120209A1 (en) * 2012-10-15 2014-04-16 Renato Pilotelli "SINGLE CYLINDER KNITWEAR MACHINE"
CN104862872B (en) 2014-02-24 2017-08-25 山德霓股份公司 Knitting circular knitting machine
IT201700038900A1 (en) * 2017-04-07 2018-10-07 Alberto Pilotelli NEEDLE CYLINDER FOR A SINGLE FRONT KNITTING MACHINE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB249996A (en) * 1925-03-10 1926-04-08 Franklin Billson Improvements in or relating to circular knitting machines
GB586771A (en) * 1944-10-07 1947-03-31 Bentley Eng Co Ltd Improvements in and relating to grooved or tricked beds for sliding instruments
US3290900A (en) * 1963-07-10 1966-12-13 Scott & Williams Inc Knitting machine elements
DE2140180A1 (en) * 1971-08-11 1973-03-08 Fouquet Werk Frauz & Planck DEVICE WITH GUIDE CHANNELS FOR NEEDLES, PUSHERS, SQUARES OR ORGANS ACTING MACHINE PARTS ON TEXTILE MACHINES, IN PARTICULAR ON CIRCULAR KNITTING AND CIRCULAR MACHINES

Also Published As

Publication number Publication date
DE3336594A1 (en) 1985-04-25
JPS61500127A (en) 1986-01-23
EP0144598A1 (en) 1985-06-19
WO1985001756A1 (en) 1985-04-25
CS261221B2 (en) 1989-01-12
ES8506828A1 (en) 1985-08-01
DD232727A5 (en) 1986-02-05
ES536892A0 (en) 1985-08-01
SU1449019A3 (en) 1988-12-30
DE3470761D1 (en) 1988-06-01
JPH0515812B2 (en) 1993-03-02

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