EP0172948B1 - Flat bed knitting machine - Google Patents
Flat bed knitting machine Download PDFInfo
- Publication number
- EP0172948B1 EP0172948B1 EP84201260A EP84201260A EP0172948B1 EP 0172948 B1 EP0172948 B1 EP 0172948B1 EP 84201260 A EP84201260 A EP 84201260A EP 84201260 A EP84201260 A EP 84201260A EP 0172948 B1 EP0172948 B1 EP 0172948B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needle beds
- knitting machine
- frame
- fact
- machine according
- 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
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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
Definitions
- the present invention relates to a rectilinear knitting machine comprising a frame supporting two needle beds arranged in a dihedral above the frame.
- the invention aims to solve this flexion problem by producing a frame radically different from the traditional design.
- the knitting machine according to the invention is characterized in that the frame comprises two profiled bearing parts extending horizontally parallel to the needle beds, respectively substantially below the lower edge of each of the needle beds, and on which are distributed vertical uprights along said profiled parts and provided at their upper ends with oblique flanges on which the needle beds rest, these flanges being provided with adjustment means making it possible to adjust the fulcrums of the functions on said flanges.
- the frame according to the invention does not have a beam between the needle beds, but the bearing part has been divided in two and moved outside of the space delimited by the needle beds, below the lower end of each of these needle beds, where there is all the space necessary to produce a rigid support and having a sufficient moment of inertia.
- the profiled parts are preferably not massive and therefore relatively light and have, under the effect of their own weight only a negligible deflection, even for a great length.
- the space between the needle beds is freed, so that it is easy to accommodate rollers and other drawing devices. Access to these devices is also greatly facilitated.
- tubular beams added or produced by folding the sheet metal of the frame, also creates closed tubular spaces along the machine where it is possible to accommodate cables and electrical or mechanical devices.
- Another significant advantage is the significant reduction in the cost of manufacturing the frame. This can be made of folded and welded sheets, that is to say by means which can be expensive and does not require great precision, while the manufacture of a cast iron frame and its precise machining constitute operations. very expensive.
- Fiture 1 is a partial view in cross section along 1-1 of FIG. 2, of a rectilinear knitting machine of which the needle beds and the cam carriage have been shown schematically.
- Figure 2 is an axial sectional view along II-II of Figure 1, without cam holder carriage.
- the machine shown in the drawing comprises a frame of folded and welded sheet metal, of which only the upper and central part has been shown.
- This frame comprises external sheets 1 and 2 extending on each side parallel to the axis of the machine and folded twice at right angles to the inside so as to form two porois 3, 4, respectively 5, 6, the rectangular section thus formed being closed by a vertical sheet 7, respectively 8, these sheets forming with the walls 3 and 4, respectively 5 and 6, two beams horizontal 9 and 10.
- the parts not shown of the sheets 1, 2, 7 and 8 of course extend to the ground to form the bearing part of the machine, these parts have no particular characteristic, except that they are reinforced and braced to ensure the strength and rigidity of the frame.
- the beams 9 and 10 can also be braced or cross-braced as required, but while retaining a relative lightness.
- On each of the beams 9 and 10 are welded steel uprights such as 11 to 16, spaced from each other by about 40 cm and facing each other in pairs such as the uprights 11 and 12.
- the upper ends of these uprights are provided with oblique flanges 17 and 18, these flanges themselves carrying pairs of supports 19, 20, respectively 21, 22.
- These supports are minis of axial screws accessible from the underside of the flange so as to allow the height to be modified supports.
- On these supports rest the two needle beds 23 and 24 of the machine whose inclination is the same as that of the flanges 17 and 18.
- the needle beds are fixed by each of their ends on vertical supports 25 and 26 constituted by steel plates or cast iron.
- FIG. 1 the illustration of the machine has been supplemented by the schematic representation of the cam carriage 27 moving on two longitudinal cylindrical bars 28 and 29.
- a continuous drawing device which has been described in detail in patent CH No. 633 334.
- This pulling device comprises two cylinders 30 and 31 driven in rotation and driving in opposite directions belts 32 and 33 passing on small diameter cylinders 34 and 35 located nearby from the upper end of the needle beds.
- FIG. 2 a machine of indeterminate length has been shown flyingly, because the construction according to the invention precisely makes it possible to produce a machine of any length.
- FIG. 1 clearly shows that the inertia of the bedding support which has hitherto been centered in the castle made of cast iron situated between the bedding has been moved outside the space delimited by these bedding.
- the beams 9 and 10 there is all the space desired and necessary to obtain a sufficient static moment of inertia, that is to say to produce sufficiently rigid beams.
- These beams are also relatively light and have a very small deflection.
- the uprights, such as 11 to 16, constitute only a relatively low load on these beams.
- the height of the uprights does not need to be determined with precision, the differences in height of the support points being able to be easily compensated by the screws equipping the support points such as 19 to 22. No element comes in addition clutter the space between the uprights of each pair, as appears in Figure 1, which allows to easily accommodate a pulling device as shown and also to have access to this device from below the machine.
- Beams 9 and 10 could be made in many other ways by using known models of static mechanics.
- the beams 9 and 10 can in particular be constituted by independent, solid, cross-braced or tubular beams.
- the interior of the beams 9 and 10 can also be used for the passage of electric cables.
- the uprights could be fixed to the beams by means of bolts.
- the means of adjusting the support points could be other than transverse screws, for example eccentrics or shims.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Abstract
Description
La présente invention a pour objet une machine à tricoter rectiligne comprenant un bâti supportant deux fontures disposées selon un dièdre au-dessus du bâti.The present invention relates to a rectilinear knitting machine comprising a frame supporting two needle beds arranged in a dihedral above the frame.
On connait de nombreuses machines de ce type, fabriquées depuis plusieurs dizaines d'années. Toutes ces machines ont en commun un bâti présentant une partie rigide en fonte, appelée château, s'étendant à la manière d'une poutre, sous et entre les fontures, d'une extrémité à l'autre de la machine. Ce château présente deux faces obliques usinées avec précision, sur lesquelles reposent les fontures. Ce château n'occupe pas tout l'espace entre les fontures, maise il est évidé pour le passage de la pièce tricotée et le logement du dispositif de tirage. Ce château est destiné à soutenir les fontures dans une position parfaitement rectiligne, de telle sorte que les talons des clavettes des aiguilles logées dans la fonture soient actionnés avec précision par les cames du chariot qui se déplace au-dessus des fontures. Toutefois, compte tenu du seul poids propre du château, celui-ci a tendance à fléchir dans sa partie centrale, c'est-à-dire à présenter une flèche von négligeable, déjà pour une portée entre appuis de 1 mètre, cet effet étant amplifié par les efforts de tirage du tricot et les efforts des cames sur les aiguilles. Ce problème est connu depuis longtemps et on a cherché à le résoudre par divers moyens. Il est par exemple connu de sangler ensemble les pieds du bâti pour exercer une flexion sur le château s'opposant à la flexion due à son poids propre. Dans une machine connue (machine ANVH CNC A 3 de la firme STOLL), on a prévu des câbles de tension pour compenser la flèche. A chaque déplacement de la machine, il est toutefois nécessaire d'effectuer un nouvel ajustement. D'autre part, cet adjustement est délicat et les tensions qu'il est nécessaire d'exercer pour compenser la frèche sont relativement élevées. Ce problème a en outre constitué jusqu'à ce jour une limitation de la longueur des machines.Many machines of this type are known, manufactured for several decades. All these machines have in common a frame having a rigid cast iron part, called a castle, extending like a beam, under and between the needle beds, from one end to the other of the machine. This castle has two oblique faces machined with precision, on which the beds rest. This castle does not occupy all the space between the needle beds, but it is hollowed out for the passage of the knitted piece and the housing of the drawing device. This castle is intended to support the needle beds in a perfectly straight position, so that the heels of the pins of the needles housed in the needle bed are actuated with precision by the cams of the carriage which moves above the needle beds. However, taking into account the self-weight of the castle, it tends to flex in its central part, that is to say to present a negligible deflection, already for a range between supports of 1 meter, this effect being amplified by the pulling efforts of the knitted fabric and the efforts of the cams on the needles. This problem has been known for a long time and attempts have been made to solve it by various means. It is for example known to strap together the feet of the frame to exert a flexion on the castle opposing the flexion due to its own weight. In a known machine (ANVH CNC A 3 machine from the firm STOLL), tension cables were provided to compensate for the deflection. Each time the machine is moved, however, it is necessary to make a new adjustment. On the other hand, this adjustment is delicate and the tensions which it is necessary to exert to compensate for the gap are relatively high. This problem has furthermore hitherto constituted a limitation on the length of the machines.
L'invention a pour but de résoudre ce problème de flexion en realisant un bâti radicalement différent de la conception traditionnelle.The invention aims to solve this flexion problem by producing a frame radically different from the traditional design.
La machine à tricoter selon l'invention est caractérisée par le fait que le bâti comprend deux parties portantes profilées s'étendant horizontalement parallèlement aux fontures, respectivement sensiblement en dessous du bord inférieure de chacune des fontures, et sur lesquelles sont fixés des montants verticaux répartis le long desdites parties profilées et munis à leurs extrémités supérieures de flasques obliques sur lesquels reposent les fontures, ces flasques étant munis de moyens d'adjustement permettant d'ajuster les points d'appui des fonctures sur lesdits flasques.The knitting machine according to the invention is characterized in that the frame comprises two profiled bearing parts extending horizontally parallel to the needle beds, respectively substantially below the lower edge of each of the needle beds, and on which are distributed vertical uprights along said profiled parts and provided at their upper ends with oblique flanges on which the needle beds rest, these flanges being provided with adjustment means making it possible to adjust the fulcrums of the functions on said flanges.
Contrairement à la conception appliquée pendant des dizaines d'années et admise comme étant la seule valable, le bâti selon l'invention ne présente pas de poutre entre les fontures, mais la partie portante a été divisée en deux et déplacée à l'extérieur de l'espace délimité par les fontures, en-dessous de l'extrémité inférieure de chacune des ces fontures, où l'on dispose de toute la place nécessaire pour réaliser un support rigide et présentant un moment d'inertie suffisant. Les parties profilées sont de préférence non massives et par conséquent relativement légères et ne présentent, sous l'effet de leur poids propre qu'une flèche négligeable, même pour une grande longueur. En outre, l'espace entre les fontures est libéré, de telle sorte qu'il est aisé d'y loger des rouloirs et autres dispositifs de tirage. L'accès à ces dispositifs est également grandement facilité.Contrary to the design applied for decades and accepted as being the only valid one, the frame according to the invention does not have a beam between the needle beds, but the bearing part has been divided in two and moved outside of the space delimited by the needle beds, below the lower end of each of these needle beds, where there is all the space necessary to produce a rigid support and having a sufficient moment of inertia. The profiled parts are preferably not massive and therefore relatively light and have, under the effect of their own weight only a negligible deflection, even for a great length. In addition, the space between the needle beds is freed, so that it is easy to accommodate rollers and other drawing devices. Access to these devices is also greatly facilitated.
L'utilisation de poutres tubulaires, rapportées ou réalisées par pliage de la tôle du bâti, crée en outre des espaces tubulaires fermés le long de la machine où il est possible de loger des câbles et des dispositifs électriques ou mécaniques.The use of tubular beams, added or produced by folding the sheet metal of the frame, also creates closed tubular spaces along the machine where it is possible to accommodate cables and electrical or mechanical devices.
Le résultat le plus frappant est toutefois la suppression de la limitation de la longueur de la machine.The most striking result, however, is the removal of the machine length limitation.
Un autre avantage, non négligeable, est la sensible reduction du coût de fabrication du bâti. Celui-ci peut être réalisé en tôles pliées et soudées, c'est-à-dire par des moyens peut coûteux et n'exigeant pas une grande précision, alors que la fabrication d'un bâti en fonte et son usinage précis constituent des opérations fort coûteuses.Another significant advantage is the significant reduction in the cost of manufacturing the frame. This can be made of folded and welded sheets, that is to say by means which can be expensive and does not require great precision, while the manufacture of a cast iron frame and its precise machining constitute operations. very expensive.
Enfin, les machines sont plus légères sans pour autant que leur stabilité en soit affectée.Finally, the machines are lighter without affecting their stability.
En vue des avantages que présente le conception selon l'invention, ou peut s'étonner qu'une telle conception n'ait pas été adoptée depuis longtemps. Ceci est dû sans aucun doute à l'existence de préjugés contre un mode de construction imprécis comme l'est le pliage et le soudage de tôles. Cette imprécision était en contradiction avec la précision exigée dans l'usinage des fonctures et dans le soutient de celle-ci. Il était admis qu'une rigidité suffisante ne pouvait être obtenue qu'au moyen d'une pièce massive, de fonderie, et que la précision ne pouvait être obtenue que par l'usinage de cette pièce de fonderie sur des machinesoutils de précision.In view of the advantages of the design according to the invention, or may be surprised that such a design has not been adopted for a long time. This is undoubtedly due to the existence of prejudices against an imprecise construction method such as bending and welding of sheets. This imprecision was in contradiction with the precision required in the machining of functions and in the support thereof. It was recognized that sufficient rigidity could only be obtained by means of a massive piece of foundry, and that precision could only be obtained by machining this foundry piece on precision machine tools.
Le dessin annexé représente, à titre d'exemple, une forme d'exécution de l'invention.The accompanying drawing shows, by way of example, an embodiment of the invention.
La fiture 1 est une vue partielle en coupe transversale selon 1-1 de la figure 2, d'une machine à tricoter rectiligne dont on a représenté schèmatiquement les fontures et le chariot porte-cames.
La figure 2 est une vue en coupe axiale selon II-II de la figure 1, sans chariot porte-cames.Figure 2 is an axial sectional view along II-II of Figure 1, without cam holder carriage.
La machine représentée au dessin comprend un bâti en tôle pliée et soudée, dont on a représenté seulement la partie supérieure et centrale. Ce bâti comprend des tôles extérieures 1 et 2 s'étendant de chaque côté parallèlement à l'axe de la machine et repliées deux fois à angle droit à l'intérieure de manière à former deux porois 3, 4, respectivement 5, 6, la section rectangulaire ainsi formée étant fermée par une tôle verticale 7, respectivement 8, ces tôles formant avec les parois 3 et 4, respectivement 5 et 6, deux poutres horizontales 9 et 10. Les parties non représentées des tôles 1, 2, 7 et 8 s'étendent bien entendu jusqu'au sol pour former la partie portante de la machine, ces parties ne présentent aucune caractéristique particulière, sinon qu'elles sont renforcées et entretoisées pour assurer la solidité et la rigidité du bâti. Les poutres 9 et 10 peuvent être également entretoisées ou croisillonnées selon les besoins, mais tout en conservant une relative légèreté. Sur chacune des poutres 9 et 10 sont soudés des montants en acier tel que 11 à 16, distants les uns des autres d'environ 40 cm et se faisant face par paires telles que le montants 11 et 12. Les extrémités supérieures de ces montants sont munies des flasques obliques 17 et 18, ces flasques portant eux-mêmes des paires d'appuis 19, 20, respectivement 21, 22. Ces appuis sont minis de vis axiales accessibles depuis la face inférieure du flasque de manière à permettre de modifier la hauteur des appuis. Sur ces appuis reposent les deux fontures 23 et 24 de la machine dont l'inclinaison est la même que celle des flasques 17 et 18. Les fontures sont fixées par chacune de leurs extrémités sur des supports verticaux 25 et 26 constitués par des plaques en acier ou en fonte. A la figure 1, l'illustration de la machine a été complétée par la représentation schmématique du chariot porte-cames 27 se déplaçant sur deux barres cylindriques longitudinales 28 et 29. On a également représenté, entre les fontures, un dispositif de tirage en continu qui a été décrit en détail dans le brevet CH No 633 334. Ce dispositif de tirage comprend deux cylindriques 30 et 31 entraînés en rotation et entraînant en sens opposé des courroies 32 et 33 passant sur des cylindres de faible diamètre 34 et 35 situés tout près de l'extrémité supérieure des fontures.The machine shown in the drawing comprises a frame of folded and welded sheet metal, of which only the upper and central part has been shown. This frame comprises
A la figure 2 on a représenté volantairement une machine de longueur indéterminée, car la construction selon l'invention permet précisément de réaliser une machine de n'importe quelle longueur. La figure 1 montre clairement que l'inertie du support des fontures qui était jusqu'ici cncentrée dans le château en fontre situé entre les fontures a été déplacée à l'extérieur de l'espace délimité par ces fontures. Dans la zone des poutres 9 et 10 on dispose de tout l'espace voulu et nécessaire pour obtenir un moment statique d'inertie suffisant, c'est-à-dire réaliser des poutres suffisamment rigides. Ces poutres sont en outre relativement légères et présentent un flèche très faible. Les montants, tels que 11 à 16, ne constituent qu'une charge relativement faible sur ces poutres. La hauteur des montants n'a pas besoin d'être déterminée avec précision, les différences de hauteur des points d'appuis pouvant être aisément compensées par les vis équipant les points d'appuis tels que 19 à 22. Aucun élément ne vient en outre encombrer l'espace entre les montants de chaque paire, comme ceci apparaît à la figure 1, ce que permet de loger aisément un dispositif de tirage tel que représenté et en outre d'avoir accès à ce dispositif par le dessous de la machine.In FIG. 2, a machine of indeterminate length has been shown flyingly, because the construction according to the invention precisely makes it possible to produce a machine of any length. FIG. 1 clearly shows that the inertia of the bedding support which has hitherto been centered in the castle made of cast iron situated between the bedding has been moved outside the space delimited by these bedding. In the area of the
Les poutres 9 et 10 pourraient être réalisées de nombreuses autres mainères en utilisant les modèles connus de la mécanique statique.
Les poutres 9 et 10 peuvent notamment être constituées par des poutres indépendantes, pleines, croisillonnées ou tubulaires. L'intérieure des poutres 9 et 10 peut en outre être utilisé pour le passage de câbles électriques. Les montants pourraient être fixés aux poutres au moyen de boulons. Les moyens d'ajustement des points d'appui pourraient être autres que des vis transversales, par exemple des excentriques ou des cales.The
Claims (6)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT84201260T ATE38256T1 (en) | 1984-08-31 | 1984-08-31 | FLAT KNITTING MACHINE. |
| DE8484201260T DE3474845D1 (en) | 1984-08-31 | 1984-08-31 | Flat bed knitting machine |
| EP84201260A EP0172948B1 (en) | 1984-08-31 | 1984-08-31 | Flat bed knitting machine |
| US06/768,430 US4586352A (en) | 1984-08-31 | 1985-08-22 | Rectilinear knitting machine |
| ES546544A ES8701254A1 (en) | 1984-08-31 | 1985-08-29 | Flat bed knitting machine. |
| DD85280183A DD236557A5 (en) | 1984-08-31 | 1985-08-30 | FLAT KNITTING MACHINE |
| JP60190975A JPS6163753A (en) | 1984-08-31 | 1985-08-31 | Linear motion knitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP84201260A EP0172948B1 (en) | 1984-08-31 | 1984-08-31 | Flat bed knitting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0172948A1 EP0172948A1 (en) | 1986-03-05 |
| EP0172948B1 true EP0172948B1 (en) | 1988-10-26 |
Family
ID=8192476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84201260A Expired EP0172948B1 (en) | 1984-08-31 | 1984-08-31 | Flat bed knitting machine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4586352A (en) |
| EP (1) | EP0172948B1 (en) |
| JP (1) | JPS6163753A (en) |
| AT (1) | ATE38256T1 (en) |
| DD (1) | DD236557A5 (en) |
| DE (1) | DE3474845D1 (en) |
| ES (1) | ES8701254A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4008057A1 (en) * | 1990-03-14 | 1991-09-19 | Stoll & Co H | KNITTED PATTERN |
| DE19810117A1 (en) | 1998-03-09 | 1999-09-16 | Stoll & Co H | Flat knitting machine |
| DE502005001781D1 (en) * | 2005-06-02 | 2007-12-06 | Wickmann Werke Gmbh | Coiled melting conductor for a fuse element with plastic seal |
| CN111549442A (en) * | 2020-03-24 | 2020-08-18 | 苏州特点电子科技有限公司 | Zero waste yarn end-starting control method of full-automatic computerized flat knitting machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE557376A (en) * | ||||
| US1800265A (en) * | 1925-12-18 | 1931-04-14 | Burson Knitting Company | Knitting machine |
| US2025499A (en) * | 1933-03-27 | 1935-12-24 | Firm Edouard Dubied & Cie Sa | Crank driving arrangement for jacquard controlled flat knitting machines |
| US2312565A (en) * | 1941-11-21 | 1943-03-02 | Stephen W Lippitt | Flat knitting machine |
| FR1091977A (en) * | 1954-01-25 | 1955-04-18 | Cotton Maschinenfabrik G M B H | Frame wall for straight knitting machines |
| US3304748A (en) * | 1963-01-31 | 1967-02-21 | Dubied & Cie Sa E | Cam-box for a jacquard flat knitting machine |
| DE3219860A1 (en) * | 1982-05-27 | 1983-12-08 | H. Stoll Gmbh & Co, 7410 Reutlingen | FLAT KNITTING MACHINE |
-
1984
- 1984-08-31 EP EP84201260A patent/EP0172948B1/en not_active Expired
- 1984-08-31 DE DE8484201260T patent/DE3474845D1/en not_active Expired
- 1984-08-31 AT AT84201260T patent/ATE38256T1/en not_active IP Right Cessation
-
1985
- 1985-08-22 US US06/768,430 patent/US4586352A/en not_active Expired - Fee Related
- 1985-08-29 ES ES546544A patent/ES8701254A1/en not_active Expired
- 1985-08-30 DD DD85280183A patent/DD236557A5/en not_active IP Right Cessation
- 1985-08-31 JP JP60190975A patent/JPS6163753A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ATE38256T1 (en) | 1988-11-15 |
| EP0172948A1 (en) | 1986-03-05 |
| DD236557A5 (en) | 1986-06-11 |
| ES8701254A1 (en) | 1986-11-16 |
| ES546544A0 (en) | 1986-11-16 |
| US4586352A (en) | 1986-05-06 |
| JPS6163753A (en) | 1986-04-01 |
| DE3474845D1 (en) | 1988-12-01 |
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