EP0789100A2 - Outil de tricotage étampé - Google Patents

Outil de tricotage étampé Download PDF

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Publication number
EP0789100A2
EP0789100A2 EP97101100A EP97101100A EP0789100A2 EP 0789100 A2 EP0789100 A2 EP 0789100A2 EP 97101100 A EP97101100 A EP 97101100A EP 97101100 A EP97101100 A EP 97101100A EP 0789100 A2 EP0789100 A2 EP 0789100A2
Authority
EP
European Patent Office
Prior art keywords
shaft
needle
knitting tool
recess
thickness
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.)
Granted
Application number
EP97101100A
Other languages
German (de)
English (en)
Other versions
EP0789100A3 (fr
EP0789100B1 (fr
Inventor
Uwe Henning
Bernhard Schuler
Klaus Wagner
Hans Lebherz
Siegfried Wissmann
Thomas Dr. Bregel
Albert Teufel
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.)
Filing date
Publication date
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Publication of EP0789100A2 publication Critical patent/EP0789100A2/fr
Publication of EP0789100A3 publication Critical patent/EP0789100A3/fr
Application granted granted Critical
Publication of EP0789100B1 publication Critical patent/EP0789100B1/fr
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

Definitions

  • the invention relates to a punched knitting tool, for example a hook or latch needle, but the knitting tools in question also include sliding needles, needles without a tongue, for example plush hooks for producing plush goods, sinkers, needles without a foot and the like.
  • These knitting tools each have a shaft with which they are guided to and fro in an associated guide groove of a needle carrier, for example a needle bed, a dial or a needle cylinder etc. Since the needle shaft is pressed against the floor and against at least one side wall of the guide groove during this reciprocating movement, depending on the operating conditions, considerable friction occurs between the needle shaft and the wall regions of the guide groove which are in engagement therewith that not only cause warming but also increase movement resistance leads.
  • the knitting tools must therefore be lubricated, which is usually done with low-viscosity oil, which is introduced into the guide groove in a mist or drop shape at discrete lubrication points.
  • the lubrication ratios that can be achieved in this way are often not sufficient, so that, inter alia, inadmissible heating of the machine and the knitting tools and possibly even an undesirable impairment of the life of the knitting tools and the needle beds etc. are to be feared.
  • JP-A-5-195394 proposes the proposal, in the case of a latch needle, the shaft of which has a bridge consisting of two vertical guide pieces which run from the upper edge of the needle shaft to the lower edge of the needle shaft and a narrow bridge connecting them, between this bridge and the Provide a recess in the needle shaft.
  • This depression is limited by the front edge of the foot, a narrow connecting web along the lower edge of the needle shaft and a subsequent guide piece of the bridge.
  • the depression which is open towards the upper edge of the needle shaft is kept filled with lubricating oil during operation via an oil feed device, which is then to be applied when the needle shaft is moved back and forth over the areas of the guide groove wall covered by the depression.
  • the shaft has been designed with at least one bridge in the aforementioned manner, that is to say it is approximately meandering
  • the needle shaft on at least one broad side with a longitudinal groove that is continuous over the length of the shaft and parallel to the upper and lower edge of the needle shaft.
  • This longitudinal groove of which there may be one on each broad side, is also intended to improve the lubricating oil distribution and retention in the guide groove. The effect of such a longitudinal groove in this sense is limited, however, because the oil distribution achieved through the longitudinal groove does not result in a sufficient lubricating effect.
  • the longitudinal groove has in particular the purpose of reducing the weight and thus the inert mass of the needle shaft, in order in this way to counteract the occurrence of hook breaks which result from the shock waves in the needle which occur when the needle foot strikes the lock parts.
  • a measure known from US-A-4 036 036 also serves a similar purpose, which consists in providing at least one through opening in the needle shaft which is arranged such that it does not extend to the upper or lower edge of the needle shaft and The task of which is seen in dampening the impact of operational shock loads.
  • the invention has for its object to provide a knitting tool that is characterized by a significantly reduced movement resistance compared to comparable conventional knitting tools when moving in the associated guide channel of a wearer and thus contributes to the operation of one with such Knitting tools equipped knitting machine to reduce heating and the required drive power, while at the same time extending the life of the knitting tool and the parts of the guide groove or the guide channel which engage with it.
  • the punched knitting tool according to the invention has the features of patent claim 1 and / or claim 2.
  • the shaft is provided with lubricant distributors on at least one of its two broad sides provided, which have at least a region of reduced shaft thickness.
  • This region of reduced shaft thickness can be designed in the form of a bevel and / or recess which runs transversely to the longitudinal direction of the shaft and which extends from a region at a distance from the upper edge of the shaft up to or almost up to the lower edge of the shaft.
  • an area of reduced shaft thickness can additionally be provided in the form of a depression which extends transversely to the longitudinal direction of the shaft and extends almost or to the lower edge of the shaft, which has an essentially wedge-shaped or trough-shaped cross-sectional shape, ie essentially notches - Or is channel-shaped.
  • the area of reduced shaft thickness which extends from an area at a distance from the upper edge of the shaft and extends almost or to the lower edge of the shaft, forms a lubricant collecting or collecting pocket, from which, when the knitting tool moves back and forth, lubricant uniformly over the bottom and the adjacent side wall of the guide channel is applied distributed.
  • the area of reduced shaft thickness is expediently arranged below the foot having the same thickness as the shaft.
  • the lubrication is supported and improved precisely in the area below the foot in which the shaft is pressed with the greatest compressive force against the adjacent side wall of the guide channel, while at the same time reducing the thickness of the foot and thus impairing its wear resistance.
  • notches or trough-shaped depressions running in front of and behind the foot in the shaft, transverse to the longitudinal direction of the shaft, having an essentially wedge-shaped or trough-shaped cross-sectional shape be provided, which effectively reduce the lubricant drain from the area below the foot.
  • This is of considerable importance, for example, in the case of cylindrical needles of circular knitting machines, in which, due to their vertical installation position, the lubricant introduced into the guide channels tends to flow downwards under the effect of gravity, with the result that the lubricant supply at the most highly stressed points can become insufficient without additional measures .
  • the shaft Adjacent to one of the recesses mentioned, can have an area of increased shaft thickness, which creates a raised sealing lip on the corresponding side of the recess, which improves the sealing effect on the lubricant collecting pocket formed in this way relative to the associated side wall of the guide channel.
  • the areas of reduced shaft thickness on the respective broad side of the shaft result in a corresponding reduction in the contact area with the side wall of the guide groove facing. Together with the improved lubrication, this results in a considerable reduction in the friction between the knitting tool and the walls of the associated guide channel or the associated guide groove which cooperate with it, with the result that the sliding resistance of the knitting tools to be overcome by the drive device is substantially reduced.
  • the improved lubrication conditions also lead to an extension of the service life of both the knitting tool itself and the guide elements assigned to it.
  • FIGS. 1, 5 and 12 each as exemplary embodiments for knitting tools according to the invention, were punched out of strip steel during manufacture. They each have a needle shaft 1 of rectangular cross-sectional shape, the two broad sides of which are indicated in FIGS. 3, 4 at 2 and 3 and the upper and lower edges of which are designated 4 and 5, respectively.
  • a needle foot 6 is provided on the upper edge 4 of the shaft 1.
  • a needle hook 8 adjoins the shaft 1 via a throat 7 and cooperates in a known manner with a pivoted needle tongue indicated at 9.
  • the shaft 1 in all of the illustrated embodiments is formed at least in sections with a number of bridges, each of which is formed by two vertical guide pieces which run from the upper shaft edge 4 to the lower shaft edge 5 and are formed by a narrow web 11 are connected to each other, which runs parallel to the upper or lower edge of the shaft. In the area of these bridges, the shaft 1 thus has a meandering shape.
  • the needle foot 6 is also underpinned by a similar, but wider guide piece 12 which extends up to the height of the lower edge of the needle shaft 5, that is to say to the back of the needle.
  • the shaft 1 is designed as a full shaft in the region of the foot 6, the full shaft section 14 extending over approximately the same length in front of and behind the needle foot 6 and having the full needle shaft height.
  • the shaft 1 is provided on at least one of its broad sides 2, 3 with lubricant distributors, which have the task of reducing the friction between the channel walls and the needle shaft 1 that occurs during the movement of the latch needle in the guide channel of the needle bed (not shown) and improve the lubrication ratios for the latch needle in the needle channel. This results in a reduced heat development in the knitting machine and an extended service life of the latch needles.
  • These lubricant distribution means each have at least one area of reduced shaft thickness on one of the two broad sides 2, 3, which promotes the lubricant storage and distribution and at the same time also the effective contact surface with the associated guide channel side surface and thus the movement resistance for the latch needle that occurs during operation belittles.
  • the shaft 1 is provided in the region of the guide piece 12 underneath the needle foot 6, on the broad side 2 facing the viewer in FIG. 1, with a cutout 15 in the form of a continuous piece over the length of the guide piece 12 Provided flattening which extends continuously from a line 17 extending the lower edge 16 of the web 11 adjoining the needle foot 6 on both sides to the lower edge 5 of the needle shaft.
  • the needle shaft has a constant reduced thickness over the surface of the recess 15, which is approximately between 10% and 50% of the normal needle shaft thickness.
  • the area of reduced shaft thickness at 15 could also be formed by a bevel, which, starting from line 17 in FIG. 1, extends to the lower edge 5 of the needle shaft in such a way that the needle shaft has an essentially wedge-shaped cross-sectional shape in the area designated by 15. as is shown in principle for the embodiment to be explained according to FIGS. 5, 6 in FIG. 7.
  • the region of reduced shaft thickness arranged below the needle foot 6 is designed in the form of a bevel or recess 15a, which extends to the lower edge 5 of the needle shaft and is approximately parabolic in shape, with a vertex pointing towards the needle foot 6, as is the case can be seen from Figure 5.
  • the cross-sectional image according to FIG. 7 shows that in the region 15a which is delimited by a parabola, the shaft thickness varies from the value of the normal shaft thickness corresponding to the thickness of the needle foot 6 in the vicinity of the apex of the parabola to a minimum value at the Lower shaft edge 5 reduced, which is about 25% of the normal shaft thickness indicated at 18.
  • the bevel at 15a could also be replaced by a stepped recess, so that in principle there is a cross-sectional image corresponding to FIG. 8, the region 15a of reduced shaft thickness having a constant thickness.
  • the parabolic delimitation of the area 15a it would naturally also be possible to use a circular arc-shaped, triangular or otherwise appropriately designed form of the delimitation line.
  • FIG. 9 Another alternative for the formation of the recess is illustrated in FIG. 9.
  • the recess 15b the cross-sectional shape of which can correspond to FIG. 7 or FIG. 8, is open on the side 19 facing the needle hook 8, while it is delimited on the side 20 behind the needle foot 6 by a curved wall surface which is located in one section on the upper side 21 continues, which runs parallel to the lower edge of the adjoining web 11 and corresponds to line 17 of FIG.
  • the vertical guide pieces 10 on both broad sides 2, 3 are also each provided with a bevel 22 or 23 in the area of the so-called tracking behind the needle foot 6, as is particularly the case in FIG. 3 can be seen.
  • the one bevel in the area of the broad side 3 starts from the lower edge 5 of the needle shaft and extends approximately over a length of approximately 2/3 of the height of the guide piece 10. It is assigned a second bevel 23 on the opposite broad side 2, which is from the
  • the needle shaft upper edge 4 has approximately the same length as the first bevel 22, so that the two bevels 22, 23 overlap one another.
  • each of the bevels 22, 23 also merge into the adjacent needle shaft side surface via a groove at 22a or 23a.
  • the terminal guide piece 10a can be beveled in the manner described, so that cross-sectional images corresponding to FIG. 3 or FIG. 4 result; but it can also be designed according to the region 15 or 15a of reduced wall thickness.
  • the guide pieces 10 are two bridges located behind the needle foot 6, that is to say in the region of the tracking, on the broad side 2 facing the viewer in FIG. 5 with the upper shaft edge 4 to the lower shaft edge 5 passing through Notch-like depressions 24 which run transversely to the longitudinal direction of the shaft and which have an essentially wedge-shaped cross-sectional shape, which can be seen in particular from FIGS. 10 and 14.
  • the notch-like depressions 24, which each extend approximately half the width of the associated guide piece 10 in the longitudinal direction of the needle (cf. FIG. 10), are each delimited on the side remote from the needle foot 6 by a side wall 25 which is level with the side surface 2 An angle of 90 ° or, as can be seen from FIG.
  • the shaft 1 Adjacent to the recess 24, the shaft 1 has an increased wedge-shaped area 29 (FIG. 14) in cross-section, which extends the side surface 25 to the outside and forms a kind of sealing lip over the shaft height, the function of which will be explained in more detail below .
  • the subsequent two guide pieces 10, which are located at a greater distance from the needle foot 6 behind this, are also formed with areas of reduced shaft thickness, which, however, each have a channel-shaped depression which extends transversely to the longitudinal direction of the shaft and extends from the upper shaft edge 4 to the lower shaft edge 5 is designed in the shape of an arcuate cross section, so that it has an approximately trough-shaped shape.
  • the profile line indicated at 31 in FIG. 11 can also end smoothly at 32 at the end of the broad side 2. As can be seen from FIG. 1, the groove-shaped depression 30 extends beyond the respective guide piece 10 into the region of the adjacent web 11 or 11a.
  • the guide piece 10 following in the direction of the shaft end, together with the adjoining web 11a lying on the back of the shaft and the subsequent guide piece 10, with the formation of the gradation 31 shown in FIG. 8, is formed with an area of reduced thickness which follows extends approximately up to the lower edge 32 of the adjoining webs 11 and extends down to the lower edge 5 of the needle shaft.
  • the end guide piece 10a is also formed with a similar area of reduced shaft thickness in the manner of a flattening, which corresponds to that in the embodiment is designed according to Figures 1, 2.
  • depressions 24, 30, bevels 15, 15a or recesses 31 etc. also for example in the case of so-called full shaft needles, sinkers, or footless needles such as are used for left / left knitting machines or for knitting machines in which the needle drive is used Linear motors can be used.
  • full shaft needles, sinkers, or footless needles such as are used for left / left knitting machines or for knitting machines in which the needle drive is used
  • Linear motors can be used.
  • FIGS. 12, 13, An example illustrates the latch needle shown in FIGS. 12, 13, which has the already mentioned full shaft section 14 in the area of the needle foot 6, in which notch-like depressions 24, two of which are machined parallel to one another, are machined at intervals on the broad side facing the viewer are arranged in front of the needle foot 6 and five behind the needle foot 6.
  • the notch-like depressions 24 can otherwise with stylus-like tools, similar to those used in file production, while the recesses or bevels 15a are, for example, milled or pressed and the other trough-shaped or groove-shaped depressions 30, etc. can be produced by milling or embossing processes.
  • a milling or bevel 15a can also be present in the area below the needle foot 6.
  • areas of reduced shaft thickness of the type described can also be present on both broad sides 2, 3 of the needle shaft 1 in all embodiments.
  • the areas of reduced shaft thickness act on the needle shaft in the manner of oil collection or collection pockets, from which the lubricating oil introduced into the guide channel is distributed along the path of movement of the needle over the bottom wall and the side wall of the needle guide channel, to which the needle shaft is pressed during operation of the knitting machine .
  • the bevels 22, 23 and / or 15 / 15a like the cutouts 15, 31, leave free spaces which reduce the lubricating oil and sliding resistance during operation.
  • the recesses or bevels 15, 15a which are also arranged below the needle foot, act in particular as an oil collector from which lubricating oil is effectively brought to these highly stressed locations, as well as to the heavily used front and rear edge of the needle foot.
  • the notch-shaped depressions 24 contribute to the uniform distribution of the lubricating oil and prevent an undesired downward flow of the lubricating oil, particularly in the vertical installation position. This sealing effect is further supported by the sealing lips at 26.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP97101100A 1996-02-10 1997-01-24 Outil de tricotage étampé Expired - Lifetime EP0789100B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19604954 1996-02-10
DE19604954A DE19604954C1 (de) 1996-02-10 1996-02-10 Gestanztes Strickwerkzeug

Publications (3)

Publication Number Publication Date
EP0789100A2 true EP0789100A2 (fr) 1997-08-13
EP0789100A3 EP0789100A3 (fr) 1998-11-18
EP0789100B1 EP0789100B1 (fr) 2003-04-09

Family

ID=7785091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97101100A Expired - Lifetime EP0789100B1 (fr) 1996-02-10 1997-01-24 Outil de tricotage étampé

Country Status (4)

Country Link
US (1) US5901582A (fr)
EP (1) EP0789100B1 (fr)
JP (1) JP3231648B2 (fr)
DE (2) DE19604954C1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740985C2 (de) * 1997-09-18 1999-09-30 Groz Beckert Kg Gestanztes Strickwerkzeug
JP2000073263A (ja) * 1998-08-24 2000-03-07 Fukuhara Needle Kk 編機械用打ち抜き部品
DE10300830B3 (de) * 2003-01-10 2004-08-05 Groz-Beckert Kg Strickwerkzeug und Herstellungsverfahren für dieses
DE10333172B4 (de) * 2003-07-22 2006-01-19 Groz-Beckert Kg Strickmaschinennadel
US7690223B2 (en) 2004-12-07 2010-04-06 Fukuhara Needle Co., Ltd. Part for circular knitting machine
EP2172584B1 (fr) * 2008-10-02 2013-01-09 Groz-Beckert KG Aiguille de machine à tricoter dotée d'un arc à méandre fendu
EP2405043A1 (fr) * 2010-07-06 2012-01-11 Groz-Beckert KG Système de tricot doté de canaux de guidage aplatis
DE102011119335B3 (de) * 2011-11-25 2013-04-04 Thomas Liebers Anordnung eines Strickelements in einem Führungskanal einer Strickmaschine sowie Strickelement
PT2927360T (pt) * 2014-04-03 2017-04-20 Groz Beckert Kg Ferramenta de tricotar para máquinas de tricotar

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949572A (en) 1969-12-29 1976-04-13 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi High impact knitting needle
US4036036A (en) 1976-03-22 1977-07-19 The Torrington Company Latch needle for knitting machines
US4625527A (en) 1985-04-12 1986-12-02 Fukuhara Needle Company, Ltd. Knitting plate needle and its manufacturing method
JPH05195394A (ja) 1992-01-16 1993-08-03 Fukuhara Seiki Seisakusho:Kk 編機用編針

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US410858A (en) * 1889-09-10 Half to louis n
US664808A (en) * 1899-12-13 1900-12-25 Dodge Needle Company Knitting-machine needle.
US2677257A (en) * 1950-02-27 1954-05-04 H D Hines Dial transfer knitting needle
GB1094156A (en) * 1963-09-25 1967-12-06 Matthews & Birkhamshaw Ltd An improved knitwear linking machine needle
DE2911195C2 (de) * 1979-03-22 1981-03-19 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Verfahren zur Bearbeitung der Nadelfüße gestanzter Strickmaschinennadeln
JPS63177977U (fr) * 1987-05-06 1988-11-17
JP6335743B2 (ja) 2014-10-01 2018-05-30 株式会社アルバック 機能性素子、二酸化バナジウム薄膜製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949572A (en) 1969-12-29 1976-04-13 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi High impact knitting needle
US4036036A (en) 1976-03-22 1977-07-19 The Torrington Company Latch needle for knitting machines
US4625527A (en) 1985-04-12 1986-12-02 Fukuhara Needle Company, Ltd. Knitting plate needle and its manufacturing method
JPH05195394A (ja) 1992-01-16 1993-08-03 Fukuhara Seiki Seisakusho:Kk 編機用編針

Also Published As

Publication number Publication date
JP3231648B2 (ja) 2001-11-26
EP0789100A3 (fr) 1998-11-18
DE19604954C1 (de) 1997-02-27
DE59709734D1 (de) 2003-05-15
EP0789100B1 (fr) 2003-04-09
JPH09310255A (ja) 1997-12-02
US5901582A (en) 1999-05-11

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