EP0838545B1 - Strickwerkzeug für Textilmaschinen und Herstellungsverfahren für dieses - Google Patents

Strickwerkzeug für Textilmaschinen und Herstellungsverfahren für dieses Download PDF

Info

Publication number: EP0838545B1
Authority: EP; European Patent Office
Prior art keywords: stamping; blank; knitting; needle; edge
Prior art date: 1996-10-24
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

EP97116773A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0838545A2 (de

EP0838545A3 (de

Inventor

Richard Roth

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

Groz Beckert 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.)

1996-10-24

Filing date

1997-09-26

Publication date

2003-03-19

1997-09-26 Application filed by Groz Beckert KG filed Critical Groz Beckert KG

1998-04-29 Publication of EP0838545A2 publication Critical patent/EP0838545A2/de

1999-04-21 Publication of EP0838545A3 publication Critical patent/EP0838545A3/de

2003-03-19 Application granted granted Critical

2003-03-19 Publication of EP0838545B1 publication Critical patent/EP0838545B1/de

2017-09-26 Anticipated expiration legal-status Critical

Status 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
- B21G1/06—Making needles used for performing operations of needles with hook or barb, e.g. crochet hooks

Definitions

the invention relates to processes for the production of Knitting tools using a stamped blank (Punch blank) is assumed. Also concerns the Invention a punched knitting tool with rounded, beveled or broken edges. Under “knitting tools” there are latch needles, point needles, sliding needles, Needles without tongue, for example plush hooks for manufacturing of plush goods, as well as boards and the like understand.
the knitting tools mentioned are usually large To produce a number of pieces of consistently good quality. This particularly affects the edges of the knitting tools, in contact with the thread to be knitted come or the corresponding with or channel walls Needle channels are in contact and related these are moved.
the needle foot in one Embossing processing step with groove-like depressions or grooves that extend over the entire length of the needle foot extend over its flat sides.
One too stamping tool created for this purpose takes the foot of the raw-punched needle from a steel band and presses when closing in the flat sides of the needle foot the mentioned wells. Die when punching the Needlefoot's previously created fracture surfaces become squeezed outwards and converted into a predetermined shape. The rest of the needle is not from the embossing process affected.
DE 44 42 943 C1 is a punched knitting tool known that a shaft with plastic-filled Has openings.
the marginal edges of both sides of the Openings are crimped to form a positive To enable attachment of the plastic filling.
the edges are squeezed from both sides the flat strip-shaped shaft towards each other pressed, causing the material flowing towards each other the wall of the slit-shaped opening is deformed. Between the so bevelled opening edges is the Diaphragm wall concave.
edge areas before or after another shaping process such as milling or punching by means of embossing, rounded, chamfered or otherwise broken.
claim 1 is one by punching out the blank resulting sharp edge or a corresponding one Burr removed by embossing.
the punch blank into the engraving of a corresponding embossing tool laid and shaped in it.
the engraving that is the Receiving space of the embossing tool for the blank, is dimension so that protruding or sharp edges of the blank to be pressed in, being in the edge area a flow of material towards the center of the blank is obtained.
the edge area and the subsequent, also affected by the forming process Surface areas are solidified. This can improve the durability of a needle made in this way.
the geometry of the Knitting tool set relatively precisely.
the cross section the knitting tool is based on the shape of the engraving of the embossing tool defines and agrees with this.
inclined surfaces or facets are formed.
the one obtained by embossing Edge geometry enables significantly improved Sliding properties of the faceted knitting tools in corresponding guide channels of knitting or knitting machines. Compared to conventional polishing or grinding processes to remove machining burrs with the molding process step more reproducible Contours reached.
the knitting tools tend less to damage duct walls and displace that Less lubricant.
the embossing tool preferably takes the entire blank, so that it is shaped overall becomes. This will become the later knitting tool, if present, also in the area of his foot, surface hardened and deburred at the same time.
the blank can be punched also give a shape to the damage the one to be knitted with the knitting tool Excludes thread.
the stamping processing step can both, as mentioned above, after punching out the Stamped blanks are run to existing sharp ones Blunt edges, as well as before cutting Processing step. This is, for example, during production of latch needles of importance in which in the Needle slit a slot to accommodate a movable stored tongue must be trained.
the slot will usually milled into the blank in question, with sharp edges on the edge of the milled slot arise.
the method according to the invention is previously embossed at least one obliquely flanked groove into the blank.
the groove bottom is the next Milling process deepened, after which a breakthrough is formed can be.
the flanks of the embossed groove then form the edge of the slot, which is therefore free of sharp Edges is. While with conventional polishing or Grinding the edges of the slot because of the small slot width are largely inaccessible an effective edge rounding with the embossing processing step reached.
the embossing processing step can be on two each other opposite narrow sides of the needle blank be executed so that the slot to be trained has rounded edges on both sides.
the embossing processing step can be done with two dies as well as with correspondingly profiled ones Roles are performed. These are then mechanical or electronically guided on curves or they are with a predetermined force is pressed against the blank, whereby the desired depth of penetration is automatic established.
the embossing direction that is, the Direction in the area of the bevelled edges mainly material is moved in both cases aligned approximately to the center of the cross section.
a punched knitting tool has on its outer contour especially at least one in the edge area Embossed area that is free of sharp edges. Form the embossing areas or the outer edges of the Knitting tool, runs a corresponding knitting tool low-friction in assigned guide channels and treated Threads to be processed are gentle in the thread sliding area.
a knitting tool serving tongue needle 1 each has a head or Hook 2, which is followed by a neck 3, which in a needle breast 4 passes over.
a longitudinal slot 6 In their area is a arranged longitudinal slot 6, for example, in which a needle tongue 7 is pivotable about a bearing 8 is stored.
the needle breast 4 closes via a throat 9 a shaft 11 which, when using the needle in a Needle channel of a knitting machine is added.
the one with Shaft 11 provided with a plurality of recesses 12 instructs its end 13 remote from the hook 2 has a foot 14 on.
the foot 14 is in one piece on the. Shaft 11 formed and extends at right angles to the longitudinal direction 16 the latch needle 1.
the foot 14 goes with it arcuate transitions 17, 18 into the shaft 11.
the latch needle 1 has two mutually parallel Flat sides 21, 22, between which narrow sides, namely Needle top 23 and needle back 24. How 3 shows are between the top of the needle 23 and the flanks 21, 22 transition regions 26, 27 are provided, which are somewhat rounded and somic not sharp-edged Form transition. Corresponding transition areas 28, 29 are between the needle back 24 and the lateral flanks or flat sides 21, 22 are provided.
the longitudinal slot 6 is on the top of the needle 23 lying mouth of inclined flanks 31, 32 limited that without sharp edges in the top of the needle 23 pass over.
Corresponding inclined flanks 54, 55 can on the underside in the transition to the needle back 24 be provided.
At least the ridge 37, which is about the ridge height G rises above the flat side 22 to remove is an in Fig. 6 illustrated embossing tool 41 provided from an upper tool 41a and a lower tool 41b exists and with which the punch blank 33 in an embossing blank 33a is transferred.
One in the embossing tool 41 trained engraving 42 corresponds in shape to that machined embossing blank 33a, from which the base body the latch needle 1 is formed.
the light inner Width W of the engraving 42 of the embossing tool 41 is the same closed stamping tool 41 with the thickness D of the blank 33 matches or is at most insignificant lower.
a corresponding edge deformation of the punch blank 33 can be reached in the upper tool 41a and the lower tool 41b at the edges of the engraving 42 rounded edge regions 44, 45, 46, 47 are formed. Otherwise, the engraving 42 is limited by flat surfaces.
a punch blank 33 inserted into the engraving 42 is therefore in particular when closing the embossing tool 41 deformed in the area of its outer edges, its Thickness D remains essentially unchanged.
the punch blank 33 is related to that shown in FIG the longitudinal center plane 36 is essentially symmetrical Form (embossing blank 33a with outer contour 34a) transferred.
Both the ridges 37 and the feed side 38 are carried out in the embossing tool 41 Shape embossing process deformed, the transition areas 26, 27, 28, 29 have been formed with radii that predetermined by the edge areas 44 to 47 of the engraving 42 are.
the material flow direction is based on the 4 and 5 illustrated cross-sectional area about diagonally to the center of the cross section.
a stronger deformation of the punch blank 33, at the fracture surfaces 39 by flowing the material can be smoothed is possible. Be independent of it defined by the embossing process rounded or beveled edge areas reached that are solidified. This applies both to edges in the thread sliding area of the neck 3, the needle chest 4 and the throat 9 as well as for the edges of the shaft 11.
the edge rounding in the thread sliding area improves the properties the latch needle 1 in terms of treatment a thread during the knitting process.
the rounding the edges of the shaft improve the running properties the latch needle 1 in the needle channel.
the surface hardening achieved is an advantage in both cases.
the dynamic strength of the foot 14 positive affected is achieved.
the surfaces and edges in question continuously smoothed or rounded, so that the foot 14 is able to cope with higher dynamic continuous loads.
the molding process becomes microscopic surface irregularities eliminated and the surface is particularly in the Area of transitions 17, 18 smoothed.
the blank is embossed 33a of the longitudinal slot 6 is formed.
delimiting Edges is used in the manufacture of the latch needle 1 Needle chest 4 die stamping processing step inserted.
the longitudinal slot 6 shown in FIG. 8 is in its central area by parallel to each other Slotted edges 51, 52 delimited, being on the top of the needle 23 of the latch needle 1, the oblique flanks 31, 32 connect to this. Accordingly, are on the back of the needle 24 inclined flanks 54, 55 formed that like that Sloping flanks 31, 32 together form an acute angle ⁇ of 60 °, for example.
the plan trained in the example Sloping flanks 31, 32; 54, 55 can also be rounded and arranged at a different angle to each other his.
the stamping dies 57, 58 towards the embossing blank 33a held between them moves so that they both on the needle top 23 also on the needle back 24 each in cross section trapezoidal longitudinal groove 61, 62 in the embossing blank 33 molding.
the transition to the top of the needle 23 and the edges 63, 64 of the needle back 24 not sharp, but rather rounded.
the Outer contour 34a is including the outer one Transitional areas 26, 27, 28, 29 and edges 63, 64 exclusively defined by non-cutting processing steps.
the resulting longitudinal slot 6 has, for example, the one indicated at 65 Contour (Fig. 9).
the in 10 illustrates rollers 71, 72 for use come. These have on their respective outside trapezoidal profile.
the longitudinal groove 61, 62 becomes the blank 33, 33a between the rollers 71, 72 carried out that this in the top of the needle 23 and push in the needle back 24, or the rollers 71, 72 are guided along the blank 33, 33a. there the roller 72 moves on a straight path 73, while the roller 71 on a corresponding to the needle contour curved path 74 is guided.
the Grooves 61, 62 are further processed as above described.

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Mechanical Engineering (AREA)
Knitting Machines (AREA)
Punching Or Piercing (AREA)
Shaping Metal By Deep-Drawing, Or The Like (AREA)

EP97116773A 1996-10-24 1997-09-26 Strickwerkzeug für Textilmaschinen und Herstellungsverfahren für dieses Expired - Lifetime EP0838545B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19644166A DE19644166C1 (de)	1996-10-24	1996-10-24	Strickwerkzeug für Textilmaschinen und Herstellungsverfahren für dieses
DE19644166		1996-10-24

Publications (3)

Publication Number	Publication Date
EP0838545A2 EP0838545A2 (de)	1998-04-29
EP0838545A3 EP0838545A3 (de)	1999-04-21
EP0838545B1 true EP0838545B1 (de)	2003-03-19

Family

ID=7809836

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP97116773A Expired - Lifetime EP0838545B1 (de)	1996-10-24	1997-09-26	Strickwerkzeug für Textilmaschinen und Herstellungsverfahren für dieses

Country Status (5)

Country	Link
US (1)	US6112556A (es)
EP (1)	EP0838545B1 (es)
JP (1)	JP3305635B2 (es)
DE (2)	DE19644166C1 (es)
ES (1)	ES2195064T3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102005028099B3 (de) *	2005-06-16	2007-03-15	Hugo Kern Und Liebers Gmbh & Co. Kg Platinen- Und Federnfabrik	Verfahren zum Herstellen von Nadeln für Textilmaschinen sowie danach hergestellte Nadeln
CN100402225C (zh) *	2005-12-05	2008-07-16	秦策	钢丝横机针后缺免铣加工方法
CN102105628B (zh) *	2008-07-23	2012-06-27	株式会社岛精机制作所	编织针驱动用三角及横编机
US9371603B2 (en) *	2013-02-28	2016-06-21	Nike, Inc.	Feeder for knitting machine with friction reducing features

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2123971A1 (de) *	1970-05-20	1971-12-02	Vyzkumny ustav pletarzsky, Brunn (Tschechoslowakei)	Arbeitselement einer Strickmaschine mit mindestens einem Nadelfuß
US4036036A (en) *	1976-03-22	1977-07-19	The Torrington Company	Latch needle for knitting machines
DE2637078C3 (de) *	1976-08-18	1981-12-17	Willy 7474 Bitz Zimmermann	Verfahren und Vorrichtung zur Bearbeitung des Fußes von gestanzten Strick- oder Wirkmaschinennadeln bzw. von Platinen, Nadelschiebern, Stößern o.dgl.
DE2911195C2 (de) *	1979-03-22	1981-03-19	Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt	Verfahren zur Bearbeitung der Nadelfüße gestanzter Strickmaschinennadeln
DE3401874A1 (de) *	1984-01-20	1985-07-25	Haase & Kühn S.A., Les Geneveys, Coffrane	Umhaengenadel und verfahren zu ihrer herstellung
DE8913293U1 (de) *	1989-11-10	1989-12-28	Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt	Gestanztes Strickwerkzeug für Textilmaschinen
JPH04263658A (ja) *	1991-02-18	1992-09-18	Fukuhara Seiki Seisakusho:Kk	編機用編針
DE4402706C1 (de) *	1994-01-29	1995-06-08	Groz & Soehne Theodor	Zungennadel für Textilmaschinen
DE4442943C1 (de) *	1994-12-02	1996-05-15	Groz & Soehne Theodor	Gestanztes Strickwerkzeug für Textilmaschinen, insbesondere Wirk- oder Strickmaschinen

1996
- 1996-10-24 DE DE19644166A patent/DE19644166C1/de not_active Expired - Fee Related
1997
- 1997-09-26 EP EP97116773A patent/EP0838545B1/de not_active Expired - Lifetime
- 1997-09-26 ES ES97116773T patent/ES2195064T3/es not_active Expired - Lifetime
- 1997-09-26 DE DE59709552T patent/DE59709552D1/de not_active Expired - Lifetime
- 1997-10-23 US US08/956,778 patent/US6112556A/en not_active Expired - Lifetime
- 1997-10-23 JP JP29066097A patent/JP3305635B2/ja not_active Expired - Fee Related

Also Published As

Publication number	Publication date
EP0838545A2 (de)	1998-04-29
ES2195064T3 (es)	2003-12-01
DE59709552D1 (de)	2003-04-24
US6112556A (en)	2000-09-05
EP0838545A3 (de)	1999-04-21
JP3305635B2 (ja)	2002-07-24
DE19644166C1 (de)	1997-11-20
JPH10128458A (ja)	1998-05-19

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