DE2261793A1 - SAMPLE EQUIPMENT FOR KNITTING MACHINES, IN PARTICULAR CIRCULAR KNITTING MACHINES - Google Patents

Description

Ur-! Ng. STRONG
Dipl.-ing. BONSMANN

Patent attorneys
Krefeld 1, MoerserStr. 140

Dec 13, 1972

luster direction for knitting machines _t especially circular knitting machines

The invention relates to selective tour facilities for knitting machines.

while the invention will be described below with particular reference to circular knitting machines, let it be noted

pointed out that it can also be used in knitting machines of the flat and straight or upright bar design.

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Knitting machines have a reciprocal number of needles, which are assigned to pattern feet that are attached to the needles themselves, but mostly on lifting supports for the needles or on actuating pressing components can be provided for the supports. The sample feet are arranged and provided in such a way that that they interact with selectors that are controlled or regulated by a Kuster control mechanism, so that they grasp or miss the successive model feet in order to actuate or not actuate the successive ones Influencing needles to create a pattern.

In a particular form of pattern mechanism, the needles are lifted by supports, which are lifting feet have, which, preferably by the own spring action of the support, in a path for detecting a support-lifting Driver are spring-driven at each feed or unwinding station, and from this position by a reciprocating press member are movable back, which is moved outward to a return movement of the associated support, and is held in the outer position by a permanent magnet · The swinging Pressed components have oyster feet, or are assigned to pattern feet, which with selectors of a pattern device cooperate, which either miss the feet or capture them, thereby releasing the press member from the Contact with the permanent magnet is effected, with subsequent release of its associated spring support, with a foot section of which returns to the path of the nozzle-lifting carrier.

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It should be noted that such an arrangement on machines with stationary or movable driver or cam housing is applicable

The selectors are generally defined by any electromagnetic arrangement actuated It is also common to to arrange the sample feet in staggered sets with a separate selector at each feed or unwind station, which corresponding components of the sets are assigned «If there are six sample feet in a set, controls therefore every selector every sixth pattern foot Form packed so that the circumference of the electromagnetic operating mechanism is kept as small as possible can be done while ensuring that the action or mode of operation is quick and reliable,

SJs has now found that a very effective and efficient form of selector is provided when a magnetizable, moving part of the selector between pole faces of a permanent magnet is actuated when the pole faces themselves through an electromagnetic winding or coil are surrounded for actuating the moving part by one or the other of the pole faces there. ,

The present invention accordingly consists of a selecting pattern device for a knitting machine, which is composed of a selector arm that can be moved between a foot-grasping position in

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which is a surface of the army in Kuster feet on or on needles, or associated with needles, connectable ₍ di * relative to the selecting pattern device Hind, and a foot-missing position in which said surface does not cover the pattern feet, said Selector arm further has an actuating part made of magnetizable material, which is movable between opposing pole faces of a permanent magnet, or between pole faces associated with a permanent magnet, the pole faces being surrounded by at least one electromagnetic winding or coil which is provided and arranged around the to magnetize said actuating part to attract to a selected area of the pole surfaces and to repel from the other

A simple coil is used when a current is caused or made to pass through the coil in a Direction of flow, said movable, actuating portion of the arm is polarized in a directional sense and is tightened after the first of the mentioned poles and repelled from the other of said pole faces, and further when a current passes through the coil in the opposite direction is directed, said movable, actuating portion of the arm is opposite polarized, as a result of which it is repelled from said first pole face and towards said second pole face is attracted towards so that it is moved between positions in which the foot-grasping surface of said arm in a footpath, or out of the named path

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out, lies · It can be seen that the permanent magnet is the holding the actuating section in any position when no current is flowing.

A separate coil can be used for each direction of magnetization if desired or required.

The selector coils are preferably in a stack assembly arranged, which forms a pattern unit, and the coils can be added to the compactness of the stack assembly be staggered. The coils can be shielded from one another by plates or the like, so that stray fields Do not influence or impair the operation of the selectors.

The pole faces can be provided on or on pole pieces which extend from the permanent magnet and the actuating magnet Spread part or move sideways.

In order to provide a compact coil with sufficient turns for the actuation of the actuating part, the Coil long enough to hold the entire assembly of the permanent magnet and to surround the pole pieces *

The selector can expediently be provided and arranged so that the arm is about an axis, parallel to the axis the associated coil, moves back and forth.

The selector can be provided so that the arm is rotatably supported about one end.

Alternatively, the selectors can be provided in such a way that that the arm is rotatably mounted between its ends.

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Some of the selectors in a stack assembly may differ from others in actuation mode « so the same cycle, stroke or pull of the surface "of one similar but differently localized part, i.e. staggered actuating part and staggered one Coil to be provided

As an alternative to trunnion mounting, the arm can have a flexible zone so that one end can be fixed, while the movable, actuating part is given the opportunity to be effective between the pole faces »The flexible zone can be made from a beryllium copper leaf spring exist·

In a further alternative, the arm can be slidably guided when the movable, actuating part is moving moved between the pole faces * For example, the Gap between the pole faces due to a non-magnetic Component are bridged, which has guides therein for the movable, actuating part of the arm.

üie selecting institution can be in connection with a pattern mechanism having the above-mentioned vibrating press members may be used, however, so be it pointed out that it can also be applied more broadly and comprehensively.

The invention will now be explained in more detail with reference to the drawing showing it for example, which is a preferred one Embodiment of the invention and modifications thereof can be recognized, namely with a circular knitting machine of the rotary needle cylinder type, although it can be seen

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that the invention is more widely applicable, namely

shows or shows -)

Figure 1 is a perspective view, with parts broken away, showing the general arrangement of a stacked assembly can be recognized by selecting 1-iustereinrichtungen according to one form of the invention,

Fig. 2 is a section through a cylinder of a Knitting machine, which reproduces a stacked component group of selecting devices in situ,

Fig. 3 is a schematic view of a selecting Establishment of the stack assembly and its relationship to a coil, which around a 'accordingly associated permanent magnet is wound around,

K is a schematic, perspective view of a selecting device and the sample feet of the vibrating pressure components in needle channels of the machine;

Fig. 5 is a plan view, generally in the direction of the arrow ¹ A ¹ in Fig. 2., *

6 shows a modified selector device, the stack component group of selecting devices is located differently in relation to the machine axis ",

7 shows a modified form of selecting devices,

8 shows a further modified form of a selecting Facility,

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- 8 Fig. 9 a section along the line XXwJX. '<G * jr Pig »8,

Fig. JO a front view of a further "ή mo.d; ifi" ierte, n Form of a stack component group of selecting devices,

11 is a schematic, perspective view of two selecting devices! the. in fig are shown,

Fig. 12 is a front view of another modified one Form of a stack component group of selecting devices,

FIG. 13 is a view corresponding to FIG. 3, showing a further, modified, selecting device a stack assembly group can be recognized,

FIG. 14 shows the structure of FIG. 13,

15 is a perspective view, partially in FIG exploded view, one tille one modified form of a stack component group eelek » animal facilities, Figo

Fig. L6 is a view according to arrow II of FIG. 15, while

17 shows a view, partly in section, of a further embodiment of the invention.

The illustrative selective pattern device is for use with a dog, flat bait knitting machine Upright ingot type is suitable, and it is described below in connection with its application to a dog knitting machine of the Drehzyl.inder type explained in more detail.

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The machine shown has a cylinder 1, see Figs. 2 and 51, in which needles 2 in needle channels 3 which are provided in the wall of the cylinder 1 are. There are also 3 needle jackets in the needle channels or · needle jacks (needle jacks) 4 attached, which each are provided with a spring end portion 5 having a lifting foot 6 which is arranged and provided, so that, when in an operative position, it detects a support-lifting driver 7 when the correspondingly assigned Needle 2 is to cause a knitting process.

The illustrative machine further includes, associated with each post, a swinging press member 8 which is normally held in an inoperative position by the spring end portion 5 of the associated post 4. Each vibrating press member 8 has a pattern foot 9, and the pattern feet of each of the six successive vibrating press members are arranged in foot paths which are superposed, as shown in FIG. The oscillating pressure members 8 also each have an upper end portion 21 which is provided and arranged such that it detects a Placiermitnehmer 23 in front of a feed of the machine, thereby successively swinging pressure members are pivoted xrni their end portions 21 or to cause to bring · to to move outward (FIG. 2) into contact with a permanent magnet 24. The movement of the end sections 21 in contact with the magnet 24 is also effective, via an end piece 25 thereof, to bring the feet 6 of the associated supports 4 spatially free from it

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support-lifting driver 7 into the needle channel 3, see below move, whereby an actuation of the needle 2 is not effected or rather is not effected until the foot 6 is able to do so is given to jump out from the channel through the press component, pushed away from the magnet 24 as a result of a selection by a pattern unit 10, which is assigned to the feed is.

Each pattern unit 10, see FIGS. 1, 3t ^ and 5, has six foot-selecting components 11, or drivers, which are rotatably mounted in bearings 13a by a spindle 13 which are provided in a support housing of the device 10 are, each component 11 having a foot-engaging portion 12, the components 11, when the machine is in Use is arranged for rotational movement between positions in which the foot grasping portions 12 thereof lie in corresponding paths of the footpaths, or lie free of such paths »

Any foot selector component. 11 is around a horizontal Axis in an associated bearing 13a in such a way rotatably mounted that the foot gripping portions 12 each Device lying one above the other (see FIGS. 1 and 5) and the movement of the same between said positions takes place along a path which is essentially right l / inkel to the mentioned movement path of an associated Pattern foot 9 is provided.

Each component 11 also has, assigned to it (see Fig. 3) ι a permanent magnet 14, which with is provided upper and lower pole pieces 1.5 and l6, wherein

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the magnet 1A, together with the pole pieces 15 and 16, in a .wind or. coil 17 is arranged ·

The coils and magnets are in staggered relationship arranged, -see the pign. 1 and 7 »about the leakage flux effect to keep to a minimum between each magnet and To enable compactness of the arrangement. Plates 17a Magnetic material are also provided to support adjacent coils and against external electromagnetic Shield field effects.

The foot selector components 11 are each provided with magnetizable actuation sections 18 which extend between the pole pieces 15 and 16 of their associated magnets 1h in such a way that, on the one hand, the selector is in an inoperative position, the section 18 is held in contact with the lower pole piece 16 of the magnet 11, and thus the foot portion 12 thereof lies under a path of movement of its associated foot 9 and, on the other hand, when the selector is in an operative position and a current through the coil 17 in a Direction is directed, the actuating section 18 is polarized and repelled from the pole piece l6 and is attracted to the pole piece 15, so as to cause a movement of its associated foot-gripping section 12 upward into a foot-gripping path, whereby a driving surface 20 of said section 12 can be detected by the foot 9. An operative connection of the foot y with the surface 20 is effective in order to produce an oscillating movement of the associated press component 8.

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shout, whereby the end part piece 21 thereof from the magnet is moved away, and consequently the spring end section 5 the support 4 moves the foot 6 in a path of connection with the support-lifting link 7, thereby actuating the assigned needle 2 is carried out or carried out.

The actuating portions of the selector batt parts, although they are considered between the pole pieces 15 and 16 are shown extending over a short distance, see Fig. 3, have such a length that they completely into the end space between the pole pieces 15 and l6 extend into *

The rotatable foot selector components are arranged in such a manner, because of the staggered relationship of the magnet and coil assemblies, that angular movement the longer of these, compared with the shorter of them, is compensated for by the fact that the actuating Sections 18 of the shorter compared to the actuating sections of the longer foot-selecting components thicker or wider. Thus, a Movement of the corresponding foot-grasping sections kept essentially the same · Could have the same effect can be achieved in that the distance between the pole pieces 15 and 16 of the permanent magnets is varied.

The magnet and coil assembly has been found to operate extremely advantageously compared to FIG previously known arrangements when the flow pattern around the

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actuating section l8 and the permanent magnet l ^? in a is concentrated in such a way that the problem of the leakage flux effect on the foot-grasping components of other closely

he arranges magnet and coil arrangements, is reduced. Further is the concentration of the river such, that one rapid action of the actuating component is achieved.

In a first modified arrangement; The pattern unit IQa, see FIG. 6 *, is practically displaced by a right angle compared with the device in FIGS. 1 and 2, and the foot selector components 11a; these extend essentially radially from the machine cylinder. The foot-holding components each have a section 12a which is arranged for movement between positions in which it is. in the part of a height of the feet 9a, or free from said path. The function djer ^; Magnet and coil arrangement is essentially provided as described above with reference to the illustrative selecting device. In both cases the rotary axis of the selector is parallel to the axis of the coil «

Let a second modified arrangement, see Fig * 7, the foot-gripping components are not rotatably mounted, but have an attached spring component 30 made of ileyllium copper on, which has an iron actuator (not shown) and a foot bevelling .Teilstück 32 has ..

For a third modified arrangement, see FIG. Figs. 8 and 9, the foot selector parts as _; Gleit- ^ components 35 are arranged and provided which; in guides 3-6 from non-magnetic t'iiteriöl localisis ^{: p} ^ si

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in which, if on the one hand the component 35 is attracted to a pole piece 37 of its associated magnet out, it is in an operative position in which ^ri a fußerfassendes portion in a footpath into is moved, and when the other part of the member 35 to the opposite pole piece 38 of its associated magnet is attracted to it, it is moved out of the said path "

In a fourth modified arrangement (see fig Figs. 10 and 11) the foot selector parts are arranged in such a way that that alternating pins of the same are provided as one-armed components 40 or as double-armed components 4l, all the more so the distance, through the foot grasping. Sections of the same moved to substantially the same distance hold, despite the staggered arrangement of the coils

In a fifth modified arrangement (see Fig. 12) the foot selector components 42 are equally more effective Length and are arranged in a stack component group, with alternating selectors on opposite sides the selecting device are rotatably mounted

In a sixth modified arrangement (see fig Figs. 13 and i4) each foot-selecting component 44 in an associated slot 45 provided in a block 46 of the assembly, said Slot 45 is directed towards the magnet and the coil, which are assigned to the foot-selecting component 44, and serves as a pivot point or pivot point for the component 44, wherein a lengthwise, rotatably mounted liaitd part piece

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- 15 of the component 44 is freely received in the slot 45.

The foot-selecting component 44 is in the slot 45 held by a pin 48 which extends through an oversized hole 49 formed in a neck portion 50 of the component is provided, with a center line of the hole 49 with a band of the section 4? is arranged coincidentally · .. ".-._".

The pin 48 also serves to locate each of the other five of the six selecting components of the sixth modified To retain assembly in their respective slots 45

Like the selecting components of the sample unit 10, 1, the selecting components 44 each have one magnetizable actuation component 52 on. However, extends itself, in the sixth modified arrangement, the section 52 entirely in the air space between appropriately assigned Pole pieces 55 and 56 of a permanent magnet 54 into it, wherein the pole pieces and the actuation section in a coil 57 are arranged, corresponding to the arrangement of Fig. 3

Each selecting component 44 is also provided with a foot-grasping portion 58 is provided, which is so arranged and, it is intended to function in a manner similar to component 11 of Fig. 3, with the exception that a rotational movement of the component 44 about the edge section 47 of which takes place in slot 45, such as previously mentioned

The FIGS. I5 and l6 show a modified form of the / in the form of FIGS. 13 tmd 14. An end block 6l is

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spaced from the housing 62, shown, it serves to facilitate the representation of the internal structure »The block 61 is shown with two recesses 63, which with slots 64 in cooperating surfaces of the housing 62 align. Transverse grooves 65 are in the cut away Part of the block 6l shown.

The foot-selecting components 66 are each provided in the form of a spindle 67, in two lengths of the groove 65 "tig recorded appropriately and rotatable. Each spindle 67 carries a hub 68 of a magnetizable actuation section 69t which is axially located in one or the other of the recesses 63 * One end of each spindle 67 protrudes the side of the housing in front of a selector driver 70 to be supported on a corresponding hub 71.

As before, the selector drivers 70 interact with the pattern feet 72 in the channels 73 of a needle cylinder 7k .

The actuation is that of the embodiment of FIGS. 13 and Ik , except that the movement of the foot-selecting components is more precise due to the cooperation between the spindles 67 and the hubs 68 with the corresponding formations in the end blocks 6i.

Flg. 17 shows another modification within the scope of FIG Invention · Each selector is the one shown in Figures 10 and 11 of British Patent 1,197,911 Applicant is shown, mechanically very similar and consists of an arm 8l, which in solid lines in

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an operative position in the path of the pattern feet 82 a needle cylinder 83 'which is in the direction of the arrow rotates, is shown. The inoperative position is at 8la shown in dash-dotted lines. The arm is Can be moved back and forth on a fixed pivot 85 by means of an actuating component 86 made of magnetizable material, which .sich between pole pieces 87 of a permanent magnet 88 extends. The actuating component serves as an armature in an electromagnetic coil 89, which the Magnet 88 and the pole pieces 87 surrounds «so as to be between the Pole pieces to be movable and through this in every end position to be held.

Each of the above-listed selecting entities can be operated to create a pattern, in the case of a woven fabric, knitted fabric or the like that is produced on the machine is effected by signals from band controlled means which are similar to those described in British Patent 1,214,691, although other similar suitable means can be used can be used. .

It should be noted that the spring jack system (using vibrating press members) for operating the knitting needles is given by way of example only. The electromagnetic selective device according to the invention can be used in other knitting and ./irksystems application, e.g. 3 _e if the sample feet are provided on the spring supports themselves or on needle supports that go back and forth within the needle channels

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- 18 are movable.

Numerous modifications can be made within the scope and reading the invention could be made · For example, instead of a single winding or Coil capable of being selectively energized in one direction or the other, two separate coils, can be used, for example, wound up or on each other, to magnetize the actuating part

Claims

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Claims (12)

Claims lc Selecting pattern device for knitting machines, which has a selector arm between a foot gripping Position is movable in which a surface of the arm with pattern feet on needles, or these assigned. net, is connectable, which is relative to the selecting pattern device are movable, and a foot-missing position » in which said area does not detect the sample feet, characterized in that the selector arm (11) has an actuating Has part (l8) made of magnetizable material, the between opposite pole faces (15, l6) of a Permanent magnet (l4), or belonging to this, is movable, where .die pole faces by at least one electromagnetic Coil (17) are surrounded, which is arranged and provided that the actuating part is magnetized for attraction towards a selected pole face of the pole faces and towards repulsion from the other. ' 2. Selecting pattern device according to claim 1, characterized in that a plurality of selector arms (ll) is arranged in a stack component group, which forms a filter unit (10) 309829 / 076A 3. Selecting pattern device according to claim 2, characterized in that the coils assigned to the selectors (17) are arranged in steps or offset 4. Selecting pattern device according to claim 2 or 3 » characterized in that the coils (17) assigned to the selectors are shielded from one another by plates (17a) are* 5 «Selecting pattern device according to one of the preceding Claims, characterized in that the pole faces are provided on or on pole pieces (15t 16), which extend from the permanent magnet (l4) and spread the actuating part or move it sideways. 6. Selecting pattern device according to claim 5t thereby characterized in that the coil (17) is long enough to accommodate the entire arrangement of permanent magnet (.14.) and pole pieces (15 · to span. 7 · Selecting pattern device according to one of the preceding claims, characterized in that the, or each, selector arm (11) rotatably mounted around one end (13t 13 ») 1st. 8. Selecting pattern device according to one of the claims 1 to 6, characterized in that the, or each, Selek torarm is rotatably mounted between its ends. 309329/0764 9 · Selecting 1-user device according to claim 2, 3 or 4, or according to one of claims 5 to 8, depending on claim 2, characterized in that some of the selector arms (11) in the stack component group are v> n others in the mode of Differentiate actuation to the same stroke or stroke of the said area for all selector arms of the stack component group to be provided. 10. Selecting pattern device according to one of the claims 1 to 6, characterized in that the, or each, selector arm a flexible zone (30) with one end of the Arm is fixed while movable; actuating part can be actuated between the pole faces. 11. Selecting pattern device according to claim 10, characterized in that the flexible or * elastic zone (30) consists of a ßeryllium copper leaf spring. 12. Selecting pattern device according to one of the claims 1 to 6, characterized in that the, or each, selector arm (35; FIGS. 8 and 9) is guided to slide when the movable actuating part is located between the poles (37, 38) moves. -. 13 · selective coughing device according to claim 12, characterized in that the gap or »the gap between the pole faces by a non-magnetic component (36) is bridged, which has guides therein for the 309829/0784 - 22 - displaceable actuating part of the selector mechanism (35) l4. Selective pattern device according to one of the claims 1 to 6, characterized in that the or each · selector arm (44; Fig. 14) has an edge (47) which is received in a slot (45) for free pivoting movement therein is, wherein the actuating part (52) and the foot end Part (44) from the arm away from said. hand extend. 15 * Selecting pattern device according to one of claims 1 to 6, characterized in that the, or each, selector arm is provided in the form of a shaft (67; Figs. 15, 16) which is freely mounted in a slot for reciprocating movement and »supports zips which form the actuating portion 69) and the foot-engaging portion (66). 309829/0764