EP0395383B1 - Elektromagnetische Nadelauswahlvorrichtung für eine Rundstrickmaschine - Google Patents

Elektromagnetische Nadelauswahlvorrichtung für eine Rundstrickmaschine Download PDF

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Publication number
EP0395383B1
EP0395383B1 EP90304459A EP90304459A EP0395383B1 EP 0395383 B1 EP0395383 B1 EP 0395383B1 EP 90304459 A EP90304459 A EP 90304459A EP 90304459 A EP90304459 A EP 90304459A EP 0395383 B1 EP0395383 B1 EP 0395383B1
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EP
European Patent Office
Prior art keywords
rocking
jack
knitting
needle
jacks
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
EP90304459A
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English (en)
French (fr)
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EP0395383A3 (de
EP0395383A2 (de
Inventor
Shozo Yorisue
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Precision Fukuhara Works Ltd
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Precision Fukuhara Works Ltd
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Publication date
Application filed by Precision Fukuhara Works Ltd filed Critical Precision Fukuhara Works Ltd
Publication of EP0395383A2 publication Critical patent/EP0395383A2/de
Publication of EP0395383A3 publication Critical patent/EP0395383A3/de
Application granted granted Critical
Publication of EP0395383B1 publication Critical patent/EP0395383B1/de
Anticipated expiration legal-status Critical
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
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D04B15/78—Electrical devices
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/24—Circular knitting machines with independently-movable needles with special provision for commencing goods, e.g. with non-run edges

Definitions

  • This invention relates generally to an electromagnetic needle selection device for circular knitting machines of the type including closely spaced yarn feeding and knitting stations, and more particularly to an electromagnetic needle selection device which permits the selection of knitting, tucking or welting at each yarn feeding and knitting station (GB-A-2 058 848).
  • Electromagnetic needle selection devices for circular knitting machines are generally well known and these known devices may be utilized in pattern knitting for permitting the needles to be selected to knit, tuck or welt.
  • a rocking jack is positioned beneath each of the needles and permanent magnets are provided to act upon the upper and lower ends of the rocking jack for balancing the jack around the center by magnetic force while needle selection is performed by means of control electromagnets adapted to act on the rocking jack in response to signals provided by a pattern program so that the balanced condition of the rocking jack is overcome.
  • the upper permanent magnet attracts the upper part of the jack so that the jack engages a raising cam when the control electromagnet is not actuated.
  • the lower permanent magnet attracts and draws out the lower end of the rocking jack which is further drawn out by the control electromagnet and kept in position until the jack is completely disengaged from the raising cam.
  • the control electromagnets are disposed between the lower permanent magnet and the rocking fulcrum of the rocking jack and are aligned in a vertical direction.
  • Rocking jacks are provided with armatures at two different vertical levels and these jacks are alternately positioned in the cylinder grooves.
  • needles which are to perform knitting and welting operations are selected at the needle selection device of a first yarn feeding and knitting station while the needles to be selected for tucking and welting operations are selected at the needle selection device of a second yarn feeding and knitting station.
  • an object of the present invention to provide an electromagnetic needle selection device by which the control range or vertical stroke of the control cam is reduced and first and second needle selection units, each including sets of control electromagnets, are positioned at each yarn feeding and knitting station to provide for the selection of knitting, tucking or welting at each yarn feeding and knitting station, thereby permitting the full range of pattern knitting at each yarn feeding and knitting station.
  • the electromagnetic needle selection device of the present invention includes a needle cylinder with knitting needles slidably retained for vertical movement within grooves surrounding the needle cylinder, and a rocking jack supporting cylinder positioned below the needle cylinder and in coaxial relationship therewith, the rocking jack supporting cylinder being larger in diameter than the needle cylinder and rotating therewith.
  • Control cams surround the needle cylinder and resilient spring jacks are disposed below each of the needles.
  • Selection cams are also positioned around the needle cylinder to be selectively engaged by the spring jacks.
  • Rocking jacks are retained in the grooves of the larger rocking jack supporting cylinder and have armatures extending outwardly at two different vertical levels.
  • Two sets of electromagnetic control devices are positioned at each yarn feeding and knitting stations with the electromagnets in each set being vertically spaced along a vertical line.
  • Upper permanent magnets are positioned adjacent the upper ends of the rocking jacks and lower permanent magnets are disposed adjacent the lower ends of the rocking jacks for balancing the magnetic force acting on the rocking jacks.
  • a right angle lever having a vertical arm and a horizontal arm is disposed at the juncture of the needle cylinder and the larger rocking jack supporting cylinder.
  • the vertical arm is disposed in the groove of the needle cylinder to control the position of the spring jack.
  • the horizontal arm extends outwardly above the groove in the larger rocking jack supporting cylinder and is provided with a depending lug.
  • the depending lug of the horizontal arm of the right angle lever may move into the groove behind the upper end of the rocking jack or be positioned on top of the rocking jack to impart the desired movement to the lower end of the spring jack in the needle cylinder.
  • the first needle selection unit at each yarn feeding and knitting station is provided to select certain needles to carry out a welting operation by disengaging the lower part of the spring jack from the selection cam or for selecting other needles to carry out a knitting or tucking operation by engaging the lower part of the spring jack with the selection cam for raising the spring jack up to a position where the spring jack can be selected for knitting or tucking.
  • the second needle selection unit at each yarn feeding and knitting station operates to move the lower part of the spring jack of certain of the selected other needles out of engagement with the selection cam to maintain the spring jack at the tucking level.
  • the lower part of the spring jack of the remaining of the selected other needles is maintained in engagement with the selection cam so that the corresponding spring jack is raised to a knitting position.
  • the lever ratio between the vertical arm and the horizontal arm of the right angle lever is within the range of from 1:1 to 1:2, and preferably the lever ratio is 1:1.
  • the combination of the small needle cylinder and the large rocking jack supporting cylinder enables the electromagnetic needle selecting device to operate preferably in the range of a 32 gauge or greater gauge knitting machine.
  • the electromagnets of the first and second needle selection units When the electromagnets of the first and second needle selection units are not actuated, the upper ends of the rocking jacks are held outwardly by the upper permanent magnet, while the depending lug of the horizontal arm of the right angle control lever is moved downwardly and is positioned behind the rocking jack so that the lower part of the spring jack is engaged with the selection cam and causes the needle to be raised so that it can be selected for knitting or tucking.
  • selecting of the needles for welting is performed by the first electromagnetic needle selection device while the upper end of the vertical arm of the right angle control lever is pushed inwardly by the cancelling cam.
  • the conventional type of electromagnetic needle selection device selects the needles for knitting, tucking or welting at two adjacent yarn feeding and knitting stations while the device of the present invention enables selection of these three positions of the needles for knitting, tucking or welting at one yarn feeding and knitting station.
  • the provision of the right angle control lever between the rocking jacks and the spring jacks permits this selection of the needles for knitting, tucking or welting at one yarn feeding and knitting station.
  • the knitting machine includes a rotatable needle cylinder 1 having vertically extending grooves 1a in which vertically slidable knitting needles 2 are mounted and each needle is provided with at least one operating butt 2a.
  • a spring jack broadly indicated at 3, is supported for vertical movement in the grooves 1a and beneath each of the needles 2.
  • each spring jack 3 is provided with a shoulder 3a, a vertically extending outer edge portion 3b, a stem 3c, a selecting butt 3d on the lower end portion thereof, a lowering butt 3e on the medial portion, and a vertically extending lower extension 3f.
  • the shoulder 3a of the spring jack 3 engages the bottom of the needle 2 to push the needle 2 upwardly when the spring jack 3 is raised, in a manner to be presently described.
  • the vertical outer edge 3b pushes the back or inner edge of the needle 2 outwardly while the lower end portion with the butt 3d is normally urged outwardly because of the resilient nature of the spring jack 3.
  • the stem 3c is comparatively thin and provides the resilience to the spring jack 3 to normally return the butt 3d to the outermost position, unless pushed inwardly, by means to be presently described.
  • a cam holder bracket 4 surrounds the needle cylinder 1 and is provided with needle control cams 5 for controlling the vertical movement of the knitting needles 2.
  • Spring jack selection cams 6 are also supported by the cam holder bracket 4 to be selectively engaged with the selection butt 3d of the spring jack 3.
  • a spring jack lowering cam 7 is also supported by the cam holder bracket 4 for engagement with the butt 3e and the shoulder 3a for lowering the spring jack 3.
  • the lower end portion of the cam holder bracket 4 is suitably mounted on the upper surface of an upper cam ring 8 surrounding the lower portion of the needle cylinder 1.
  • a right angle control lever is supported for rocking movement (Figure 2A) beneath each of the spring jacks 3.
  • the right angle control lever 10 includes a vertical arm 10a and a horizontal arm 10b extending outwardly therefrom and having a downwardly depending projection or lug 10c at the outer end thereof.
  • a circular fulcrum 10d is provided at the inner juncture of the vertical arm 10a and the horizontal arm 10b.
  • the lever ratio of the vertical arm 10a to the horizontal arm 10b is preferably from 1:1 to 1:2, and preferably 1:1.
  • the vertical arm 10a when pushed inwardly by a cancelling cam 11, is adapted to push the lower end portion 3f of the spring jack 3 inwardly, as illustrated in Figures 9 and 10.
  • the horizontal arm 10b may be moved downwardly, as illustrated in Figures 6-8, so that the depending lug 10c is inserted into a space behind the upper inner portions of rocking jacks 13, 14, to be presently described in detail.
  • the cancelling cam 11 includes an inwardly projecting cam portion, broadly indicated at 11a, and a relatively long arcuate portion 11b which is illustrated as being straight in the drawings but which actually curves.
  • the projecting cam part 11a includes a short straight part 11c and an inclining cam surface 11d.
  • the cancelling cam 11 and the cam ring 12 are each fixed at their outer portions to the upper cam ring 8, as illustrated in Figure 1.
  • a rocking jack supporting cylinder 9 is fixed at its upper end to the lower end of the needle cylinder 1 and in coaxial relationship therewith for rotation and the rocking jack supporting cylinder 9 is larger in diameter than the needle cylinder 1.
  • the grooves in the rocking jack supporting cylinder 9 are aligned with the grooves 1a in the needle cylinder 1 and alternately contain two kinds of rocking jacks 13, 14 alternately positioned therein.
  • the difference between the rocking jacks 13 and 14 is that the rocking jacks are provided with respective armatures or butts 13a, 14a which are positioned at different levels on the lower portions of the rocking jacks, as illustrated in Figure 2A.
  • rocking jacks 13, 14 do not move vertically but are freely rockable around the approximate centers thereof, as indicated by the fulcrums 13b, 14b so that the upper and lower ends thereof are swingable in the radial direction of the rocking jack supporting cylinder 9.
  • the relative diameters of the rocking jack supporting cylinder 9 and the needle cylinder 1 can vary. It has been found that satisfactory results can be obtained when the larger rocking jack supporting cylinder 9 corresponds to a 28 gauge knitting machine while the smaller needle cylinder 1 corresponds to a 32 gauge knitting machine. Therefore, the combination of a large rocking jack supporting cylinder 9 with a smaller diameter needle cylinder 1 enables the manufacture of an electronic pattern knitting machine of 32 gauge or more, which has been impossible in the known types of electronic needle selection devices.
  • First and second needle selection units A , B are supported in spaced relationship around the rocking jack supporting cylinder 9 and at each yarn feeding and knitting station in a cam holder bracket 17 ( Figure 1).
  • Each of the first and second needle selection units A , B includes upper control electromagnets 15 and lower control electromagnets 16 ( Figure 5) which are structurally identical and are actuated from signals from a conventional type of pattern device, not shown.
  • the cam holder bracket 17 is supported on the upper surface of a lower cam ring 21 ( Figure 1).
  • a driving gear 22 is fixed to the lower end of the rocking jack supporting cylinder 9. The driving gear 22 is driven by a driving mechanism of the knitting machine, not shown, so that both the needle cylinder 1 and the rocking jack supporting cylinder 9 are rotated thereby.
  • Spaced-apart support brackets 23 are fixed at their lower ends on the upper surface of the lower cam ring 21 and their upper ends are fixed to and support the upper ring 8.
  • the rocking jacks 13, 14 are provided with lower extensions 13c, 14c ( Figures 2A and 5) which may be pushed into the rocking jack supporting cylinder 9 by means of a setting cam 18.
  • the inner central portions of the rocking jacks 13, 14 are provided with pivoting fulcrums 13a, 13b for permitting the inward and outward rocking movements of the upper and lower ends of the rocking jacks 13, 14.
  • the setting cam 18 includes an outwardly inclining cam surface 18a, an inwardly inclining cam surface 18b, and a relatively straight part 18c, as illustrated in Figure 4.
  • the upper and lower control electromagnets 15, 16 are respectively provided with pole faces 15a, 16a arranged in vertical alignment, as shown in Figure 2B and Figure 5.
  • the armatures 13a, 14a are horizontally aligned with the pole faces 15a, 16a so that they may be drawn outwardly into surface contact therewith, when the corresponding electromagnets 15, 16 are actuated. Coils of the electromagnets 15, 16 are connected to a suitable power source generating electrical pulse currents in accordance with a prerecorded program device, not shown.
  • the upper permanent magnet 19 and a lower permanent magnet 20 are positioned adjacent the respective upper and lower ends of the rocking jacks 13, 14 and above and below the control electromagnets 15, 16.
  • the upper edges 13f, 14f of the rocking jacks 13, 14 are magnetically attracted by the upper permanent magnet 19 while the lower extensions 13c, 14c are magnetically attracted by the lower permanent magnet 20.
  • the upper permanent magnet 19 is provided with magnetic pole plates 19a, 19b and a central cutout 19c (Figure 2B) for reducing the magnetic force at the center of the pole faces thereof.
  • the lower permanent magnet 20 is provided with permanent magnets 20a, 20b ( Figure 4) each having an acting surface in generally the same shape as that of the setting cam 18 and a central cutout 20c for reducing the magnetic force thereof.
  • the cutout 20c is on the same vertical line passing through the cutout 19c of the upper permanent magnet 19.
  • the lower ends 13c, 14c are pushed into the deepest part of the rocking jack supporting cylinder grooves, while the rocking jacks 13, 14 are passing the vertical line A of the first needle selection unit and while the jacks 13, 14 are passing the cutouts 19c, 20c, whereby the magnetic force of the permanent magnets 19, 20 is temporarily reduced by the cutouts.
  • the upper and lower armatures 13a, 14a are directly opposite the upper and lower control electromagnets 15, 16 but are not moved thereby since these electromagnets 15, 16 are not electrified.
  • the upper and lower armatures 13a, 14a are not influenced by the upper control electromagnet 15 or the lower control electromagnet 16, unless these two electromagnets are electrified, so that the knitting needle 2 is further raised by the selection cam 6 to the latch clearing or knitting position, as shown in Figure 8.
  • the selection of three positions for knitting, tucking or welting at each yarn feeding and knitting station is possible and the number of yarn feeding and knitting stations surrounding the needle cylinder of a circular knitting machine can be increased. Also, since the rocking jacks 13, 14 perform only a radial swinging motion and are not required to be raised and lowered, the supporting cylinder has a longer life and increased durability.

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

Claims (6)

  1. Elektromagnetische Nadelauswahleinrichtung für eine Rundstrickmaschine mit dicht beabstandeten Garnzuführ- und Strickstationen, welche eine Auswahl des Strickens, Fangens oder Säumens an jeder Garnzuführ- und Strickstation bereit stellt, und mit einem Nadelzylinder (1) der eine Mehrzahl von Nuten (1a) an seinem äußeren Umfang und gleitbar in den Nuten gehaltene Stricknadeln (2) hat, wobei die elektromagnetische Nadelauswahleinrichtung gekennzeichnet ist durch einen Kipphebelhaltezylinder (9), der eine Mehrzahl von Nuten an seinem äußeren Umfang hat, wobei der Kipphebelhaltezylinder (9) größer als der Nadelzylinder (1) und unterhalb dieses kleineren Nadelzylinders koaxial zu diesem angeordnet ist, eine Nockeneinrichtung (5), die zur Nadelsteuerung mit den Nadeln (2) in Eingriff bringbar ist, um das Anheben und Absenken der Nadel zu führen und zu kontrollieren, eine Federklinke (Links-Linksplatine) (3), die unter jeder Nadel (2) gehaltert ist und einen oberen Endabschnitt hat, der mit einer entsprechenden Nadel (2) in Eingriff bringbar ist, sowie einen schwenkbar bewegbaren unteren Endabschnitt hat, wobei jede der Federklinken (3) einen Auswahlknopf (3d) hat, eine Nockeneinrichtung (6) für die Federklinken, welche so angeordnet ist, daß sie mit dem Auswahlknopf (3d) am unteren Endabschnitt der Federklinke (3) in Eingriff bringbar, um wahlweise die Federklinken anzugeben und abzusenken, erste und zweite Sätze von Kipphebeln (13, 14) die in den Nuten des Kipphebelhaltezylinder (9) gehalten sind, wobei jeder Kipphebel (13, 14) in jedem Satz eine schwenkbar bewegbare untere Verlängerung (13c, 14c) und ein oberes Ende (13f, 14f) aufweist, wobei der erste Satz von Kipphebeln (13) einen Beschlag bzw. Anker (13a) hat, der an einer ersten vorbestimmten, vertikalen Stelle entlang der Länge des Kipphebels (13) angeordnet ist, während der zweite Satz von Kipphebeln (14) einen Beschlag bzw. Anker (14a) hat, der an einer zweiten vorbestimmten, vertikalen Stelle entlang der Länge des Kipphebels (14) angeordnet ist, die von der ersten vertikalen Position verschieden ist, einen rechtwinkligen Steuerhebel (10), der für eine Kipp- bzw. Hin- und Herbewegung am Übergang zwischen dem kleineren Nadelzylinder (1) und dem größeren Kipphebelhaltezylinder (9) angeordnet ist, wobei jeder Steuerhebel (10) einen vertikalen Arm (10a) hat, der mit der Federklinke (3) in Eingriff bringbar ist, und einen horizontalen Arm (10b) hat, der mit den Kipphebeln (13, 14) in Eingriff bringbar ist, eine Nockeneinrichtung (11) zur Rückstellung der Federklinken, die mit dem vertikalen Arm (10a) des Steuerhebels (10) in Eingriff bringbar ist und dafür ausgelegt ist, dieselbe nach innen zu drücken, um zu bewirken, daß der Knopf (3d) der Federklinke (3) sich außer Eingriff mit der Nockeneinrichtung (6) für die Federklinken bewegt, und erste und zweite elektromagnetische Nadelauswahleinheiten (A und B), welche jeweils an den Garnzuführ- und Strickstationen und neben dem Kipphebelhalterzylinder (9) angeordnet sind, wobei die ersten und zweiten elektromagnetischen Nadelauswahleinheiten so betätigbar sind, daß sie wahlweise Schwingbewegungen nach außen auf bestimmte Kipphebel (13, 14) ausüben, so daß die entsprechenden Nadeln (2) für das Stricken, Fangen oder Säumen an jeder Garnzuführ- und Strickstation ausgewählt werden können.
  2. Elektromagnetische Nadelauswahleinrichtung nach Anspruch 1, weiterhin dadurch gekennzeichnet, daß der horizontale Arm (10b) des rechtwinkeligen Steuerhebels (10) einen äußeren freien Endabschnitt mit einem herabhängenden Ansatz (10c) aufweist, der sich von diesem nach unten erstreckt und der dafür ausgelegt ist, sich in die Nuten des Kipphebelhaltezylinders (9) hiriein und aus diesen herauszubewegen.
  3. Elektromagnetische Nadelauswahleinrichtung, weiterhin dadurch gekennzeichnet, daß das Hebelverhältnis zwischen dem vertikalen Arm (10a) und dem horizontalen Arm (10b) des rechtwinkligen Steuerhebels (10) innerhalb des Bereiches von 1 : 1 bis 1 : 2 liegt.
  4. Elektromagnetische Nadelauswahleinrichtung nach Anspruch 1, weiterhin dadurch gekennzeichnet, daß die ersten und zweiten elektromagnetischen Nadelauswahleinheiten (A und B) jeweils obere Dauermagneten (19) und untere Dauermagneten (20) aufweisen.
  5. Elektromagnetische Nadelauswahleinrichtung nach Anspruch 1, weiterhin dadurch gekennzeichnet, daß jede der ersten und zweiten elektromagnetischen Nadelauswahleinheiten (A und B) zwei Sätze von Elektromagneten (15, 16) aufweist, die in vertikaler Ausrichtung miteinander angeordnet sind.
  6. Elektromagnetische Nadelauswahleinrichtung nach Anspruch 1, weiterhin dadurch gekennzeichnet, daß der rechtwinklige Steuerhebel (10) eine kreisförmige Schwenkstelle (10d) aufweist, die am inneren Übergang des vertikalen Arms (10a) und des horizontalen Arms (10b) angeordnet ist, und wobei die kreisförmige Schwenk- bzw. Gelenkstelle (10d) in einer Position zum Hin- und Herschwenken bzw.-kippen neben dem unteren Ende des Nadelzylinders (1) und am oberen Ende des Kipphebelhaltezylinder (9) angeordnet ist, so daß eine Hin- und Herkippbewegung auf den rechtwinkeligen Steuerhebel (10) übertragen werden kann.
EP90304459A 1989-04-25 1990-04-25 Elektromagnetische Nadelauswahlvorrichtung für eine Rundstrickmaschine Expired - Lifetime EP0395383B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP106935/89 1989-04-25
JP1106935A JP2816700B2 (ja) 1989-04-25 1989-04-25 丸編機における電磁選針装置

Publications (3)

Publication Number Publication Date
EP0395383A2 EP0395383A2 (de) 1990-10-31
EP0395383A3 EP0395383A3 (de) 1992-02-26
EP0395383B1 true EP0395383B1 (de) 1995-04-05

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EP90304459A Expired - Lifetime EP0395383B1 (de) 1989-04-25 1990-04-25 Elektromagnetische Nadelauswahlvorrichtung für eine Rundstrickmaschine

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EP (1) EP0395383B1 (de)
JP (1) JP2816700B2 (de)
KR (1) KR0122597B1 (de)
DE (1) DE69018305T2 (de)
ES (1) ES2073525T3 (de)

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IT1244342B (it) * 1990-12-21 1994-07-08 Savio Spa Procedimento e dispositivo per la selezione degli aghi con vincoli a molle deformabili in una macchina circolare da maglieria
CH686141A5 (fr) * 1991-09-20 1996-01-15 Steiger Sa Atelier Constr Dispositif de selection des aiguilles d'une machine a tricoter.
DE19653761B4 (de) * 1996-12-20 2004-09-16 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Rundstrickmaschine mit auswechselbarem Nadelträger, z. B. Nadelzylinder
IT1293789B1 (it) * 1997-07-25 1999-03-10 Santoni Srl Dispositivo per la selezione degli aghi, in particolare per la selezione degli aghi del piatto in macchine circolari per
DE19821043B4 (de) * 1998-05-11 2011-07-14 SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH, 72461 Strickmaschine mit einer Taktsignalgeber-Einrichtung
KR100315892B1 (ko) * 1999-07-16 2001-12-12 서정수 편직기의 선침장치
KR101173267B1 (ko) 2006-04-06 2012-08-10 베이징 리서치 인스티튜트 오브 케미컬 인더스트리, 차이나 페트로리움 앤드 케미컬 코포레이션 할로겐화마그네슘 부가물, 이로부터 제조되는 올레핀 중합용 촉매 성분 및 촉매
SA3686B1 (ar) 2009-10-16 2014-10-22 China Petroleum& Chemical Corp مكون حفاز لبلمرة الأولفين وحفاز يشتمل عليه
ITMI20120877A1 (it) 2011-05-27 2012-11-28 Beijing Res Inst Of Chemi Cal Industry Addotto di alogenuro di magnesio, componente catalitico/catalizzatore comprendente addotto di alogenuro di magnesio e sua preparazione.
TWI650335B (zh) 2013-10-18 2019-02-11 中國石油化工科技開發有限公司 用於烯烴聚合催化劑的球形載體、催化劑組分、催化劑及它們的製備方法
CN104558282B (zh) 2013-10-18 2017-02-15 中国石油化工股份有限公司 用于烯烃聚合的催化剂组分及其制备方法和用于烯烃聚合的催化剂与应用
CN107904770B (zh) * 2017-12-07 2019-07-02 武汉纺织大学 一种针织柔性三角系统
KR101964231B1 (ko) * 2018-08-31 2019-04-02 동일편직기계(주) 환편기의 선침장치
EP4234590A1 (de) 2020-10-26 2023-08-30 China Petroleum & Chemical Corporation Feste komponente zur herstellung eines olefinpolymerisationskatalysators und herstellungsverfahren dafür und anwendung davon
KR102638054B1 (ko) * 2023-07-26 2024-02-19 주식회사 한국벨우드 양말 편직장치

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Publication number Priority date Publication date Assignee Title
GB2058848A (en) * 1979-09-26 1981-04-15 Sipra Patent Beteiligung Multi-station circular knitting machine
JPS63264955A (ja) * 1987-04-20 1988-11-01 オークマ株式会社 編機の選針装置

Also Published As

Publication number Publication date
DE69018305D1 (de) 1995-05-11
KR900016525A (ko) 1990-11-13
EP0395383A3 (de) 1992-02-26
ES2073525T3 (es) 1995-08-16
DE69018305T2 (de) 1995-08-03
JPH02289154A (ja) 1990-11-29
JP2816700B2 (ja) 1998-10-27
KR0122597B1 (ko) 1997-11-27
EP0395383A2 (de) 1990-10-31

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