EP0290805B1 - Gestanztes Strickwerkzeug für Textilmaschinen, insb. Strick-und Wirkmaschinen - Google Patents

Gestanztes Strickwerkzeug für Textilmaschinen, insb. Strick-und Wirkmaschinen Download PDF

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Publication number
EP0290805B1
EP0290805B1 EP88105948A EP88105948A EP0290805B1 EP 0290805 B1 EP0290805 B1 EP 0290805B1 EP 88105948 A EP88105948 A EP 88105948A EP 88105948 A EP88105948 A EP 88105948A EP 0290805 B1 EP0290805 B1 EP 0290805B1
Authority
EP
European Patent Office
Prior art keywords
tool according
knitting tool
webs
recess
knitting
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
EP88105948A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0290805A1 (de
Inventor
Sigmund Sos
Ferdinand Schuller
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.)
Groz Beckert KG
Original Assignee
Theodor Groz and Soehne and Ernst Beckert Nadelfabrik 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 Theodor Groz and Soehne and Ernst Beckert Nadelfabrik KG filed Critical Theodor Groz and Soehne and Ernst Beckert Nadelfabrik KG
Publication of EP0290805A1 publication Critical patent/EP0290805A1/de
Application granted granted Critical
Publication of EP0290805B1 publication Critical patent/EP0290805B1/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
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G1/00—Making needles used for performing operations
    • B21G1/02—Making needles used for performing operations of needles with eyes, e.g. sewing-needles, sewing-awls
    • B21G1/04—Making needles used for performing operations of needles with eyes, e.g. sewing-needles, sewing-awls of needles specially adapted for use in machines or tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K25/00—Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components

Definitions

  • the invention relates to a punched knitting tool for textile machines, in particular knitting and knitting machines, with a shaft part which carries at least one foot and has at one end a recess which is open at the edge and which is laterally delimited by two webs, which on the side facing the recess in regions are provided with profiles, as well as with a working part, for example, a needle head or hook, which is fitted in the correct position in the recess of the shaft part with a correspondingly designed shaft-like connecting part which is also profiled in some areas on the edge side, the connecting part in a starting from the end face of the shaft part Guide area of the recess between the webs is positively guided and anchored in an adjoining anchoring area containing the profiles of the connecting part and the webs on the shaft part.
  • a shaft part which carries at least one foot and has at one end a recess which is open at the edge and which is laterally delimited by two webs, which on the side facing the recess in regions are provided with profiles, as well as
  • a latch needle for knitting machines with the features listed above is known.
  • the needle foot and the needle hook are formed on separate shaft-like parts, namely the actual shaft part and a needle or general working part. These two parts are connected to one another in that an end region of the needle part forming a connecting part is pressed into a recess of the shaft part which is open towards the front and rigidly anchored therein by interlocking partial profiles of the connecting part and the shaft part.
  • the purpose of this two-part design of the latch needle is to have an easy way to replace damaged needle or shaft parts with new ones without having to throw away the entire needle.
  • connection between the needle and the shaft part is designed to be detachable in such a way that the connection part can simply be pushed out of the recess laterally.
  • connection part can simply be pushed out of the recess laterally.
  • the interlocking partial profiles of the connecting part and the webs delimiting the recess must be designed to be very closely tolerated in order to exclude with certainty the occurrence of even small play. Because of the tax shocks, such a game would quickly lead to a deflection of the profiles and thus to an insecure connection between the needle and the shaft part.
  • a latch needle for knitting machines is known from DE-PS 26 10 078, in which the needle foot and needle head are formed on separate needle shaft parts which are connected to one another via damping intermediate members.
  • the arrangement is such that the needle shaft parts abut one another along surfaces which run in the displacement direction of the latch needle and are connected to one another by interlocking dovetail-like connecting elements.
  • elastic intermediate members are arranged, which consist of a synthetic rubber and are either held by a simple positive fit between the coupled needle shaft parts or are only firmly anchored on one end of the two needle shaft parts.
  • the object of the invention is to remedy this and to create a punched knitting tool for textile machines, in particular high-speed knitting and knitting machines, which, by dividing it into a shaft part and a working part, allows the number of elements to be produced separately and kept in stock thereby reduce that work and shaft parts according to the the respective knitting tool variants are combined with one another by the manufacturer and are elastically connected to one another in such a way that the resulting knitting tool can be used reliably over long operating periods free of permanent breaks, for example needle head or hook breaks.
  • the knitting tool mentioned at the outset is characterized according to the invention in that at least one free space is formed in the anchoring area between the connecting part and the adjacent edge of the recess, and in that the free space is filled with a vibration-damping material which is inseparably connected between the connecting part and the Shaft part is firmly anchored to the connecting part and the shaft part.
  • the needle part in the guide area of the recess of the shaft part is guided precisely in the correct position, while at the same time the vibration-damping material filling the free space ensures that no vibrations from the control parts exerted on the foot by the lock parts are undamped to the end of the working part, for example the needle head. Since the webs of the shaft part and the connecting part of the working part are profiled on the edge side in the anchoring area, the vibration-damping material filling the free space is properly anchored to the shaft and the connecting part, the Profilings result in an additional positive anchoring of the vibration-damping material.
  • the arrangement is such that the connecting part in the anchoring area is surrounded by the free space essentially along its entire periphery, so that a large anchoring surface is available for the vibration-damping material.
  • the elastic properties can also be adapted to the respective operating conditions by suitable dimensioning of the free space filled with the vibration-damping material.
  • the profiles of the connecting part and / or of the webs have regions of reduced wall thickness which protrude into the material filling the free space. These areas of reduced wall thickness can border the associated edges of the connecting part and / or of the webs in a strip-like manner, but it is particularly advantageous if they are designed to be local.
  • the areas of reduced wall thickness can also be formed by bead-like depressions which, starting from opposite sides, are arranged symmetrically to the longitudinal center plane of the shaft part and thus result in additional anchoring surfaces for the vibration-damping material extending into and filling the depressions.
  • the working part In order to increase the stability of the connection of the working part and the shaft part, it is expedient for the working part to have integrally formed shoulders with which it lies flush against the end face of the shaft part.
  • the webs of the shaft part can also be positively connected to the shoulders of the working part, in order to achieve additional retention of the webs on the working part in the region of the web ends.
  • the shoulders can have cutouts into which the webs or parts formed thereon engage.
  • the vibration-damping material is usually a plastic or a synthetic resin, which ensures a firm adhesive connection on the corresponding anchoring surfaces of the guide part and the webs or the profiles.
  • the guide part is particularly advantageously delimited laterally with parallel flanks, at least in the guide region, the webs of the shaft part having a height of at most 1.1 mm and thus being distinguished by a particularly high elasticity.
  • this extremely narrow design of the webs makes it particularly effective Achieve damping of the vibrations introduced on the foot. It is advantageous if the axial length of the guide area is at least 1/5 of the axial length of the recess.
  • the connecting part in the part lying in the anchoring area can be tapered in height compared to the part lying in the guide area, in order to create the free space absorbing the vibration-damping material.
  • the recess in the anchoring area is widened in relation to the guide area towards the upper and / or lower edge of the shaft part.
  • the arrangement is such that the working part with the shaft part in the Guide area and / or an area adjacent to it is welded at least in places.
  • the welding of the working part to the guide part which is preferably carried out by means of a laser, reliably precludes the forces acting laterally from pushing the working part in the guide area out of the associated recess of the shaft part.
  • this welding which increases the stability of the knitting tool, if necessary in places, the described advantages of such a two-part knitting tool are retained. This applies in particular also for the vibration-damping effect of the vibration-damping material filling the free space.
  • the knitting tool shown in FIG. 1 in the form of a tongue needle, punched out of a corresponding thin steel sheet, has a shaft part 1 which carries a foot 2 on its upper side and forms the so-called demonstration at 3 and the so-called tracking of the needle shaft at 4.
  • a separate needle or working part 5 is connected, which is shaft-like at 6 and then carries at its end a molded needle hook 7, to which a needle tongue 8 is assigned, which at 9 in the usual tongue slot around a transverse one Tongue axis is pivotally mounted.
  • a shaft-like or peg-like connecting part 10 is formed on the needle part 5 at the end opposite the hook 7, which has a substantially rectangular shape and with its longitudinal axis 11 parallel to the back 12 of the needle part 5 is aligned.
  • the needle part 5 is vertically offset with its longitudinal central axis 13 with respect to the axis 11 of the connecting part 10.
  • the two axes 11, 13 are aligned with one another.
  • two shoulders 14 are formed on the needle part 5 and extend approximately at right angles to the edge of the connecting part 10, to which two approximately part-circular recesses 15 are connected in the transition area to the connecting part 10.
  • a recess 17 open towards the end face 16 is formed, which is delimited on both sides by two webs 18.
  • the two webs 18 have a height indicated at 19 of at most 1.1 mm; they are of equal height, so that the elongated recess 17 is symmetrical about the longitudinal center line of the shaft part 1.
  • the recess 17 has a guide region 20 which is delimited by two mutually opposite and mutually parallel border parts 210 of the webs 18, to which correspondingly parallel smooth border zones 22 of the connecting member 10 are assigned.
  • the arrangement is such that the connecting member 10 is fitted into the recess 17 without play in the guide area 20, the shoulders 14 of the needle part 5 being flush with the end face 16 of the shaft part 1, i.e. in the assembled state. more precisely of the webs 18, and the webs 18 engage in the recesses 15 in a form-fitting manner with projections 240 arranged at the ends and designed in accordance with the profile shape of the recesses 15.
  • the recess 17 has an anchoring region 21, in which the webs 18 are formed with a profile 24 on their inner sides facing the recess 17.
  • This profiling 24 is composed of a mutually adjoining arcuate profile sections 25, which the edge of the Give recess 17 in the anchoring area 21 an approximately garland jagged shape.
  • At the intersection of adjacent profile sections 25 there are locally limited areas of reduced wall thickness, which are formed by bead-like depressions 26, which have an approximately gusset shape and, starting from opposite sides, are arranged symmetrically to the longitudinal center plane of the shaft part 1.
  • the connecting part 10 in its assembled state in the anchoring area 21, is also formed with an edge-side profiling 27, which in the illustrated embodiment consists of arcuate profile sections 28 arranged next to one another, which also starts from opposite sides and is recessed and symmetrical to the longitudinal center plane of the Connecting part 10 and the shaft part 1 are arranged horizontally.
  • edge-side profiling 27 in the illustrated embodiment consists of arcuate profile sections 28 arranged next to one another, which also starts from opposite sides and is recessed and symmetrical to the longitudinal center plane of the Connecting part 10 and the shaft part 1 are arranged horizontally.
  • a free space 29 in the anchoring area 21 which, as can be seen from FIG. 2, surrounds the connecting part 10 in the anchoring area 21 essentially along its entire periphery.
  • This free space 29 is filled with a vibration-damping material 30, which consists of a plastic or a synthetic resin and with the boundary surfaces delimiting the free space 29 as well as those formed by the profiles 17, 27 Anchoring surfaces is firmly connected.
  • the vibration-damping material 30 overlaps the regions of reduced wall thickness (at 26, 28) of the webs 18 and the connecting part 10 formed by the depressions, whereby an additional positive anchoring is achieved between the vibration-damping material 30 and the webs 18 and the connecting part 10, as is evident from FIGS. 3, 4.
  • the connecting part 10 is formed in the anchoring area 21 with a lower height than in the guide area 10, which is indicated at 31 in FIG. 2.
  • the arcuate profile sections 25 in the anchoring area 21 adjoining the guide area 20 form an extension of the recess 17 towards the upper and lower edge of the shaft part 1.
  • the shoulders 14 are formed on the needle part 5 such that a subsequent upper edge 32 and the back 12 of the needle part 5 are aligned with the upper and lower edge of the shaft part 1 (see FIG. 2), so that there is a connection between the needle part 5 and the shaft part 1 does not result in an abrupt paragraph.
  • the axial length of the guide area 20 Dimensioned so that it is at least 1/5 of the total axial length of the recess 17.
  • the shaft part 1 and the needle part 5 are manufactured separately, the arrangement and design of the foot 2 _ or possibly several feet _ of the demonstration 3, the tracking 4 etc. of the shaft part 1 and the shaft area 6 and the needle head including the tongue 9 of the needle part 5 are designed according to the circumstances of the respective needle variant. Only in the area of the recess 17 and the connecting part 10 are the shaft part 1 and the needle part 5 of the same design.
  • the vibration-damping material 30 surrounding the connecting part 10 in the anchoring region 21 in the free space 29 ensures that shock waves introduced at the foot 2 are damped and cannot lead to a breakage of the needle hook 7. This effect is supported by the extremely low webs 18.
  • the explained design of the guide area 20 ensures that the precise guidance of the needle part 5 on the shaft part 1 is always maintained.
  • the needle part 5 and the shaft part 1 can be welded to one another in the guide region 20 and / or in the region of the shoulders 14 and end faces 16 and the recesses 15, if necessary at points or in places.
  • Laser welding is particularly suitable for this. This measure does not significantly influence the flexibility of the webs 18 over the length of the anchoring region 21, so that the effect of the vibration-damping material in the recess 17 is retained.
  • the weld is indicated at 33 in Fig. 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP88105948A 1987-05-07 1988-04-14 Gestanztes Strickwerkzeug für Textilmaschinen, insb. Strick-und Wirkmaschinen Expired - Lifetime EP0290805B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8706530U 1987-05-07
DE8706530U DE8706530U1 (de) 1987-05-07 1987-05-07 Gestanztes Strickwerkzeug für Textilmaschinen, insbesondere Strick- und Wirkmaschinen

Publications (2)

Publication Number Publication Date
EP0290805A1 EP0290805A1 (de) 1988-11-17
EP0290805B1 true EP0290805B1 (de) 1991-06-12

Family

ID=6807742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105948A Expired - Lifetime EP0290805B1 (de) 1987-05-07 1988-04-14 Gestanztes Strickwerkzeug für Textilmaschinen, insb. Strick-und Wirkmaschinen

Country Status (6)

Country Link
US (1) US4817399A (ja)
EP (1) EP0290805B1 (ja)
JP (1) JPH01139847A (ja)
CA (1) CA1286890C (ja)
DE (2) DE8706530U1 (ja)
ES (1) ES2022513B3 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706856C1 (de) * 1987-03-04 1988-03-03 Groz & Soehne Theodor Gestanztes Strickwerkzeug fuer Textilmaschinen,insbesondere Strick- und Wirkmaschinen
DE4100931A1 (de) * 1991-01-15 1992-07-16 Groz & Soehne Theodor Schiebernadel, insbesondere fuer strickmaschinen
DE4442943C1 (de) * 1994-12-02 1996-05-15 Groz & Soehne Theodor Gestanztes Strickwerkzeug für Textilmaschinen, insbesondere Wirk- oder Strickmaschinen
DE19729145C1 (de) * 1997-07-08 1999-01-07 Groz Beckert Kg Gestanztes Strickwerkzeug für Textilmaschinen, insbesondere für Strick- und Wirkmaschinen
GB2344831A (en) * 1998-10-24 2000-06-21 Cobble Blackburn Ltd A method of manufacturing a tufting machine hook
MXPA05000767A (es) * 2002-07-18 2005-04-19 Thomson Licensing Sa Metodo y aparato para desplegar un numero de titulos de video disponibles en el encendido.
BE1015131A5 (nl) * 2002-10-04 2004-10-05 Wiele Michel Van De Nv Werkwijze voor het vervaardigen van componenten bestaande uit een geheel.
EP2045384B1 (de) * 2007-10-02 2012-08-22 Groz-Beckert KG Wirknadel
US20110300430A1 (en) 2008-12-24 2011-12-08 Mitsubishi Chemical Corporation Separator for battery, and non-aqueous lithium battery
DE102009051612B4 (de) * 2009-11-02 2013-06-06 Hugo Kern Und Liebers Gmbh & Co. Kg Platinen- Und Federnfabrik Maschenbildende Nadel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431635A (en) * 1944-08-15 1947-11-25 Acme Knitting Machine & Needle Knitting machine needle and jack
CH578637A5 (ja) * 1974-12-03 1976-08-13 Dubied & Cie Sa E
DE2610078C3 (de) * 1976-03-11 1981-02-12 Mayer & Cie Gmbh & Co, 7470 Albstadt Zungennadel für Strickmaschinen
JPS569727Y2 (ja) * 1977-08-29 1981-03-04
JPS5640878U (ja) * 1979-09-03 1981-04-15
JPS579433A (en) * 1980-06-17 1982-01-18 Pola Kasei Kogyo Kk Apparatus for measuring light passing degree of skin
DE3314809C2 (de) * 1983-04-23 1985-09-12 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Gestanztes Strickwerkzeug für Strick- oder Wirkmaschinen

Also Published As

Publication number Publication date
EP0290805A1 (de) 1988-11-17
DE8706530U1 (de) 1987-06-25
CA1286890C (en) 1991-07-30
DE3863230D1 (de) 1991-07-18
JPH01139847A (ja) 1989-06-01
US4817399A (en) 1989-04-04
JPH0350021B2 (ja) 1991-07-31
ES2022513B3 (es) 1991-12-01

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