DE1906567A1 - Sample apparatus for circular knitting machines - Google Patents

Description

DIPL-ING. CURT WALLACH 1Q0R5R7 DIPC-ING-GONTHERKOCh _λ ^{iauD0D /} DR. TINO HAIBACH

8 MUNICH 2,

-* OUR SIGN! "] j 850

THE BENTLET UAGHINE DEVELOPMENT 0OMPABfY LIMITED Leicester, England

Sample apparatus for fret knitting machines

The invention relates to improvements in sample apparatus for knitting machines, and it relates in particular to a device as used in circular knitting machines, ZoB, for the machines used to manufacture women's stockings is used* - -

A well-known model apparatus used in machines to work is used by women's stockings, comprises a patterning drum, on the peripheral surface according to a predetermined Pattern rows of pins or pattern forming parts are arranged, by means of which the needle cylinder assigned Pattern formation lever are controlled, the pattern formation drum during operation of the machine by a appropriate device is caused to perform index movements. These well-known sample devices are not suitable for j any relationship to use on machines equipped with a. ! work high speed because it would be required . be able to let the index movements quickly follow one another, and this would result in considerable reactive forces which limits the possible working speed of the machine ■ 'w4-rd. If you want to switch to another pattern, "It is also necessary to use the pins or patterning parts redistribute on the drum and this is a time consuming operation. If you have several

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Pattern formation arrangements at different heights perpendicular; . Provides on top of each other, as is the case with machines for the manufacture; lijn {| of Damen's trump s often happens, it is up now 'e3? fbiw derliöh _t necessary to ensure that each set can be controlled separately i pry from Musterbildungf-' kanny so 'that the niolvfer be ~ constrained sets of levers remain ineffective. The; The object / the invention is now to create a sample apparatus which is particularly suitable to be used in machines working at high speed and in which some of the disadvantages mentioned above or all of the disadvantages mentioned are largely or completely avoided ^; . ^:

More precisely, the invention provides a pattern apparatus for use in a circular knitting machine; which comprises a rotatable pattern-forming or control part which is provided with interchangeable pattern-forming parts, furthermore a device by means of which the rotatable control part can be driven together with the pattern-forming parts at a constant speed that is matched to the rounding speed Selector lever assigned to pattern formation parts of the control part, which work together with extensions of the components assigned to the needles, and a device by means of which different groups of selector levers can be rendered ineffective as required, this device being provided at suitable times with the aid of a sequential control device. eg a control drum or chain of the machine, can be operated selectively. Thus, the invention provides an arrangement ^ in the patterning device is continuously rotated and therefore ness for operation with a high Arbeitsgeschwindig- is suitable · in this case the device needs Zürn choice ~ ^"show off by selector levers only in relatively large ^ Zeιΐ- ■ to be operated at intervals. · '""' ■ ■:;

It is convenient to the pattern apparatus "on the rotatable member in the form of a module form, ⁷ auswöchsel- ■"'"bare, arranged above one ^another: comprising jitosterbirduiagsscheiben," isto each of which, de_ at appropriate points .ihres edge with Votsprüngen provided the vSelector lever can. .J.ew.eils with zs54. _r .... """""* ■ '"""■'" ^: ■ '_". 909846/0492 ^ \; '■ ^-;: - "'?""

BADORIQtNAL

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offset against each other at an angle, all followers ifc frirkenden sections, one of which is marked with the associated patterning disc cooperates, selected edge the other can be actuated by the cut-off device · Here, the arrangement can be such that the actuation of each selector lever by a projection of the associated gene pattern formation disk causes the selector lever to be moved against the force of a Bückführfeder so that it is not more with actuating parts arranged at the same height as it can cooperate · When the cut-off device if a selector lever is actuated, this lever is brought out of engagement with the associated pattern forming disk in a similar manner »

In one embodiment, the disconnection device comprises a drum which extends in the longitudinal direction Plates or strips are provided, which with extensions the selector lever work together to render the lever in question ineffective to make or · switch off} these plates or are in each case at the level of those selector levers with Provide cutouts that do not need to be switched off, when the plate or strip in question is brought into the position in which it cooperates with the selector levers. The drum carrying these plates or strips can with an index device or the like, be provided which Sound a main control device of the machine off at appropriate times when a change in the pattern selection is required 1st, activated, i.e. made ineffective or effective is brought. However, it is also possible to use disconnection devices. of any other kind to be used, e.g. electronically operated Device that can serve to act on the selector τ lever in a suitable manner.

The following description relates to the application of the invention in a single-cylinder knitting machine for the manufacture - Production of suitable type of women's stockings. <

The invention and advantageous details of the invention are in the following on the basis of schematic drawings

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BADORlQtNAL

explained in more detail in an exemplary embodiment »

1 shows in plan and partially broken away Representation of a sample device according to the invention in his, -ner Operating position near the needle cylinder of a knitting machine. ■ ■ "." ... ■: "

Fig. 2 is a section along the line II-IΓ inFig «1»

Fig. 3 shows in a development a portion of the needle cylinder and illustrates a typical arrangement of selection members. . - ' ^: - ■ ■: -' ■■ - '

Fig. 4 shows schematically in plan a modified? .- ■ "-... Embodiment of the invention. ■ -

In single-cylinder knitting machines for knitting stockings, the pattern apparatus is used to produce certain needles. cause "to move along certain paths, so that they create usual stitches or tuck stitches or cause a float. Such a choice of needles serves not only to create a pattern, but also to carry out certain basic work steps, for example" To select the needles for the rows of cast-on stitches or to create a picot tape on the double edge of a stocking to carry out a further choice of needle for a section holding the stocking on the leg and finally a choice of needle which has the effect that a so-called micromesh stocking is created, or that another decorative knitted fabric is created, such as tuck stitches or floats . "'_' ■ -

A typical arrangement of needle selection Continuation is shown in Fig. 3 in a development. the Both Heihen D1 and D2 are for the production of a den The stocking on the leg retaining section provided; Electoral sentences .E arranged in a single row, * cause neighboring yarn ends to be intertwined with one another

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• when changing the thread. The rows F1 and F2 are provided for micromesh pattern and the single row G of projections is "upon abutment to select every second needle during the knitting process _β Further, FIG, - 3 j more rows of projections or Vorsprängen that the j nen to to produce certain effects which need not be described in detail here ₀

It should be noted that the rows D1 and D2 are offset from one another, so that the semicircle on which the extensions D2 are arranged extends over half the circumference of the cylinder, which is represented in FIG at a different level than the semicircle comprising the extensions D1, which extends over the other half of the cylinder designated by 0. The rows of extensions F1 and F2 are accordingly offset from one another. This offset arrangement makes it possible to provide free spaces on the cylinder, within which no extensions are arranged, so that the selector lever can be inserted and withdrawn. In addition, the described arrangement of the extensions enables patterns to begin and end on a predetermined needle.

Thus, the mentioned extensions or can i'iadelfüße be depressed in order to prevent loop formation, or so that iiadeifüße can be held in its La _e e, so that they produce at the next "control station mesh or floats, 1 are shown in FIG. Selector lever 12, which are provided with projections 12b and 12c which come into effect as follow-up members . The extensions 12c of the selector lever τ / earth operated by .Musterbildungscaeiben 11a,.. Which are combined into a stack and _{braced together according to Fi ^ 0} 2 so that they form a drum 11, which is timed to the rotation of the needle cylinder a gear transmission can be driven- «The other extensions 12b of the selector lever are actuated when, some selector lever or

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all selector levers are to be made ineffective · The device for switching off the selector lever includes a small © ,. . ; In the vertical direction slotted cylindrical drum 15ι drivable with the aid of a toothed rack in its vertical direction Slots suitable switch-off strips 14 are permanently installed » The drum starts and stops indexing when your appropriate control signals from the main control drum or chain can be fed to the machine »

The selector levers 12 are thus controlled by two drums, namely by the drum 11, which takes the place of the otherwise customary pin drum, and by the drum 15, which predominantly comes into play opposite the selector levers, around certain sections of the drum 11 ineffective. If, according to Fig. 2 in the slots of the drum 15 in a suitably cut switch-off bars: 14, it is possible to use the groups or sets of selector levers that are aligned with unneeded rows of extensions, e.g. the extensions D1, D2-, E ₁ G, etc. at a distance from the associated sample disks 11a, so that only the disks which control the levers 12, which are aligned with the extensions F1 and F2, act on the extensions 12c of the selector lever.

The pattern selection device is arranged on a support 1 attached to the base plate 2 of the machine. The needle cylinder 3 is provided in the usual manner with girls and needle selection parts; cause the associated needles to produce no loops; If the needles remain in their position which is not pushed inwards, they produce ordinary stitches or tuck stitches in the desired manner. The Na-? The selectors are provided with extensions 4 arranged at different heights, and depending on the pattern that the product to be worked is to receive, certain extensions are broken off. In Fig. 1 only the extensions are shown, which " are arranged at the same height in a certain pattern - ... · ■ ..;. ■.:. =" ■■■

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■ "■""■ · According to Fig * 1 and 2, the selector lever are mounted 12 mounted on an axle 25, while the drums are rotatably mounted 11 and 15 Äfef column parts 26 and 27, and all three öäulenteile 25, 26 and 27 are with their The lower ends are permanently installed in the support plate 1.

. Near the lower end of the needle cylinder 3 is a gear 5 surrounding the needle cylinder, by means of which the sample disk assembly is driven via several gear wheels 6, 7 »8» 9 and IO. The pattern-forming disks 11a lift individual selector levers 12 according to FIG. 1 into their ineffective position indicated with dashed lines or let them fall down into their working position shown with solid lines. The selector levers are biased towards their working position at a small distance from the needle cylinder by springs 25 and 2Ja and are held out of engagement with the needle cylinder by an adjustable stop plate 15 which cooperates with surfaces 12a provided for this purpose on the selector levers. The springs 23 acting on each second selector lever in positions in which this lever are rotated in a direction opposite the column portion 25, while the leather 2JA act on the lying between said tfählhebeln selector lever which is opposite to the column member 25 opposite in the direction have been panned. The springs 23 and 23a are anchored to column parts 28 and 29 built into the support plate. This arrangement, the springs extend alternately in opposite in _o esetzten directions, makes it possible to arrange the shift lever in the required small Abstänäen'voneinander. On the extensions 12b of the selector lever are arranged in vertical slots of the drum 15 switch-off bars, by means of which either groups of selector levers 12 are pivoted out of their operating position, or which allow that before it timed red groups of selector levers under the action of the associated springs Take up working position.

At the lower end of the disengaging drum · I5 is an index wheel 16 attached, the step by step by an "index lever 17

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can be rotated, on which a spring 30 acts ₉ and which is rotatably mounted on a further lever 19 with the aid of a screw 18 having a shoulder. The lever 19 carries a bevel 19a, which is held by a leather 20 in contact with a central cam 21 which is connected to the gears 6 and 7 in an adjustable manner. '-. ^

With the help of a rope 24, which is connected to the main control routine * Mel or chain of the machine is connected, a switch-off plate 22 can be operated, which in two different heights Off positions can be brought. If the switch-off plate 22 is pivoted completely, so that it is the one shown in FIG 22a assumes the position indicated, the index wheel 16 is immediately · '-fort brought to a standstill; the shut-off plate is located in its lowest position indicated at 22b in FIG. 1, the index wheel can continuously perform index movements » If the switch-off plate 22 is in its in Figo 1 at 22c Brought indicated middle position, the index wheel can its Continue the movement only up to a predetermined position, i.e. * until the end of a work sequence for producing a Munster, this position for the product in question is determined by a particularly deeply cut tooth 16a of the index wheel.

From the foregoing description it can be seen that the invention, in the embodiment just described, provides one or more pattern devices comprising a set of pattern disks which are continuously driven in synchronism with the rotation of the needle cylinder; Furthermore, an intermittent index movement executing disengaging drum is provided, and the two units mentioned control the selector lever, which determine which threads come into effect and which * needles remain idle. One can create several pattern arrangements one above the other with the help of the _λ · Walal projections of the needle cylinder and the associated '. Set sample discs, and one. Shut-off bar is built into the switch-off tromiael at a suitable location, and the length of the shut-off bar is chosen so that those parts of the pattern arrangements remain ineffective, which

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^ ewaila are not required at a certain point in time. The index movement of the switch-off drum is controlled by a cam track or the like of the main control drum or with the aid of the chain mentioned.

Since the pattern apparatus is easily accessible on the knitting machine, a pattern change can be carried out easily and quickly by exchanging the pattern disks and switch-off bars. It should also be noted that the pattern disks 11a with several. Keyways are provided so that the same type of pattern disks can be used at different heights, which are arranged in different angular positions to one another.

Instead of the tripping drum · Ip, one could use a Provide quadrants or sectors of a drum for the outer edges 14 and e.g. with the help of a rope 24 in his different working positions. can be rotated, with the rope is operated by a follower element, which is arranged on the main control drum at different heights Cams or eccentrics worked together '

FIG. 4 shows such a modified arrangement with a drum sector 31 "which takes the place of the off switchtroinmel 15 and carries seven switch-off strips 14" which can work together with the levers 12. The '. Drum sect or 31 is rotatably mounted on the column part 17 and carries an actuating arm 32 which, by means of an anchorage 33, is connected to one end of a Bowden cable. 34 is connected to a casing 35. The other end of the cable 34 is attached to an anchorage 36 with an arm 37 of a two-armed lever 37 »38 which is mounted on a stationary column part 39. The other arm of the same lever forms a follower element that cooperates with isio.cken- 40a, 40b and 40c of different heights, which are arranged on a main control drum 41. A on the arm _32: engaging the tension spring 42 keeps the cable 34 taut, so that the lever arm and the follower is supported on the cam in abutment 38th ■ ·

• ■ '■ "'-" Claims : 909846/0492

OFiIQiHAL

Claims (2)

PAT EJ 0? % NSPRtfGHE "Γ ^ ' _ν Λ { Sample apparatus for a circular knitting machine, ge ¹ Iz ^ e ¹¹ Ki'W '· - Characterized by a rotatable pattern-forming gl ^ ä 'which is provided with interchangeable pattern-forming parts (Ha), a device by means of which the rotatable pattern-forming element and the associated pattern-forming parts are driven at a constant rotational speed suitably matched to the rotational speed when tilting round, selector lever ( 12), which are assigned to the pattern-forming parts of the rotatable pattern-forming member and work together with extensions (Fig. 3 of the components associated with the needles and actuate them, as well as by means of a device (15, 14-) "by means of their various groups of" selector levers can be made ineffective as required, wherein the Yorrichtung latter is designed so that it by a sequence control device, in such appropriate times, B _o, a control drum or chain of the knitting machine, can be selectively betätigt.werden.. - 2. Sample apparatus according to claim 1, characterized geke η η-. - shows that the pattern-forming parts on the rotatable pattern-forming member (11) form an assembly which is composed of interchangeable pattern-forming disks (lla) arranged one on top of the other, each of which is provided with spraying at suitable points on its outer band. "-" · ■■: -_ .; "" ■ ..- '""'"■ -. 3ο sample apparatus according to claim 2, characterized in that each of the selector levers (12) is provided with two follower link sections (12b, 12c) offset from one another at an angle, one of which cooperates with the associated sample formation disk and the. ^: others operated by the switch-off device "are kahn _e 4o sample apparatus according to claim 2 or 3- «characterized by: -. ~ _ ':. ke η η. ζ eic h. η et that the operation of each selection τ. hebeis by an extension of the associated pattern formation disk (lla) causes that 'the relevant selector lever is moved against the force of a return spring so that it is not Φ.mm 8AÖ Hit the one arranged at the same height as this lever Üorteäteen of components for influencing needles cooperates. 5 * liusterapparat according to claim 4 ·, characterized g e k e η ni e i c h η e t that the switch-off device on those Selector levers, which are to be switched off, act in that they act against the force of springs from these levers that position pivots out in which they are with the port sets of components assigned to them for actuating Needles would work together. 6 · sample apparatus according to one of claims 1 to 5, characterized characterized in that the switch-off device • a drum (15) includes, which see in the longitudinal direction extending hats or strips (14) is provided, which Äit the selector levers work together to the respective .Wählhebei to make them ineffective, and that these plates or lines, at the level of the selector lever provided with cutouts, which do not have to be made ineffective, when the panels or strips concerned are in one position in which they work together with the selector levers 7 · Sample apparatus according to claim 6, characterized in that the one carrying the hats or strips Drum is provided with a device (16) for generating index movements, which are controlled by a main control device the knitting machine from when a pattern change is required, is controlled at suitable times so that it either is rendered ineffective or brought into effect. 8 »sample apparatus according to one of claims 1 to 5» thereby g e k e η η ζ e i c h η e t that the switch-off device comprises a drum sector (31) which is provided with disconnecting plates or disconnecting bars extending in the longitudinal direction > is provided, which work together with the levers (12) ", 90984670492 as well as a device (Fig. 4-), by means of which the drum sector can be rotated in one or the other direction, in order to bring it successively into different positions in which different holding plates or switch-off bars are in one position, in_der they work with : ■ the associated selector lever · 90984 6/0482 L e r s e i t e