EP1715092B1 - Yarn carrier for a flat knitting machine - Google Patents

Description

The invention relates to a yarn guide for a flat knitting machine which is along a yarn guide rail by a bolt arranged on the machine slide yarn guide driver longitudinally displaceable and the one by the bolt of the yarn guide driver from its working position in at least one out-of-service position and back movable yarn guide arm having a nut.

Such a yarn guide is for example from the DE 42 22 934 or from the DE 43 00 027 known. These yarn guides are by electromagnetically acted yarn guide-driver, as for example from the DE 39 22 513 C2 are known, taken during the knitting process and parked at any position of the carriage travel. In the rest position of the thread guide, the thread guide arm can execute a defined movement with the nut against the previous thread guide movement, ie the thread guide arm with the nut is brought from a working position into an off-mode position. In the out-of-action position, the nut is raised relative to the working position and offset horizontally. Instead of the superimposition of two linear movements, the nut can also be brought into its out-of-action position by pivoting the thread guide arm.

The known thread guides have despite constructive differences following commonality: The yarn guide arm with the nutlets can only during movement of the machine carriage opposite to the direction in which he was brought from the working position into the non-action position, be moved back to its working position from the addition of activity Position ,

Thus, although the known yarn guides are suitable for the production of intarsia knits, in which the yarn guide only has to be activated again after reversing the carriage direction, but not z. As for the production of knitted fabrics, in which the thread guide must be activated in the same carriage direction in which he was disabled.

In the EP 0 872 587 discloses a yarn guide device, wherein the yarn guide is taken by a yarn guide driver with the carriage. After switching off the thread guide, the nut is lifted by spring force. The required horizontal movement of the nut to reach its non-operative position is effected by the displacement of the entire yarn guide by an additional drive device. The additional drive device consists of a longitudinally movable on the yarn guide rail steel strip to which the yarn guide is magnetically fastened. The steel strip is connected at one end to a rack on which an electric motor attacks.

Although this thread guide allows the adjustment of the nutshell in its working position in a carriage movement in the same direction in which the adjustment is made in the off-mode position, but the possibility of this adjustment is due to a high design effort.

The EP 0 898 002 A2 describes a yarn guide whose Fadenführerarm is fixed, while only the Fadenführernüsschen is brought by raising and lowering in the off-position or activity position.

In contrast, the describes EP 1 391 545 A1 a yarn guide, in which not only the yarn guide up and down movable, but also the Fadenführerarm is pivotable. In this known yarn guide, however, the movements of the Fadenführernüsschen and the Fadenführerarms are each activated by different, arranged on the thread guide driver elements. The thread guide can thus be operated only by specially designed for him thread guide driver.

The present invention is based on the object, a yarn guide of the type mentioned in such a way that it can be brought in a structurally simple manner in the same carriage direction from its non-operative position in working position in which he was brought from its working position to the off-mode position, and thereby remains movable by standard thread guide driver.

The object is achieved with a yarn guide for a flat knitting machine having the features of claim 1.

In the yarn guide according to the invention the resetting of the yarn guide arm is easy in its working position in the same carriage direction as in its movement into the off-mode position possible with the thread guide driver. Additional drive devices for the yarn guide arm or even for the entire yarn guide can therefore be omitted here.

Preferably, the yarn guide arm, as known in marquetry yarn guides, are brought into two arranged in mirror image to the working position off-work positions. Normally, the Nüsschen arranged on the yarn guide arm is moved back horizontally relative to the carriage direction, so that in Intarsia crocheted at the beginning of a new color field, the Nüsschen the use of a new Thread guide not hindered. With two mirror-image off-mode positions, the nut can thus be moved back in both carriage directions in order to make way for the new thread guide.

However, the yarn guide arm can be brought not only in one of the direction of movement of the machine carriage trailing, but also in a leading out of action position. In fact, in some applications, it may be necessary to place the yarn guide arm in an off-axis position horizontally offset forward in the carriage direction.

The yarn guide arm can be brought in principle by two different movements in its off-mode position. Thus, once the thread guide arm can be brought by a vertical movement and a horizontal movement in the machine longitudinal direction from the working position in the at least one out-of-action position. In the alternative embodiment of the yarn guide arm can be brought by a pivoting movement from its working position in the at least one out-of-action position.

The yarn guide has at least one adjusting element for the yarn guide arm on which a pin of the yarn guide driver can engage. The yarn guide according to the invention can thus be adjusted by standard yarn guide drivers who take the thread guide by bolts. In this case, the bolt can be arranged raised and lowered on the thread guide driver.

The at least one adjusting element may for example be a slider and / or a pivotable switching element. The pivotable switching element may have a toothing and at one To attack toothed rack or a toothed belt to effect the adjustment movement of the yarn guide arm. An attack directly on the thread guide arm is possible.

Further advantages are obtained if the at least one adjusting element has a plurality of engagement surfaces for the thread guide driver. This becomes clear when looking at the drawing which shows several embodiments of thread guides according to the invention.

Fig. 1a - 1d

eine schematische Darstellung einer ersten Ausführungsform eines erfindungsgemäßen Fadenführers mit linearer Verstellungsmöglichkeit des FadenführerArms in unterschiedlichen Stellungen des FadenführerArms;

Fig. 2a - 2d

eine schematische Darstellung einer zweiten Ausführungsform eines erfindungsgemäßen Fadenführers mit linearer Verstellungsmöglichkeit des Fadenführer-Arms in unterschiedlichen Stellungen des Fadenführer-Arms;

Fig. 3a - 3e

eine schematische Darstellung einer dritten Ausführungsform eines erfindungsgemäßen Fadenführers mit schwenkbarem Fadenführer-Arm in unterschiedlichen Stellungen des Fadenführer-Arms;

Fig. 4a - 4d

eine schematische Darstellung einer vierten Ausführungsform eines erfindungsgemäßen Fadenführers mit schwenkbarem Fadenführer-Arm in unterschiedlichen Stellungen des Fadenführer-Arms;

Fig. 5a - 5f

eine schematische Darstellung einer fünften Ausführungsform eines erfindungsgemäßen Fadenführers mit schwenkbarem Fadenführer-Arm in unterschiedlichen Stellungen des Fadenführer-Arms;

Fig. 6a - 6d

eine schematische Darstellung einer sechsten Ausführungsform eines erfindungsgemäßen Fadenführers mit schwenkbarem Fadenführer-Arm in unterschiedlichen Stellungen des Fadenführer-Arms;

Fig. 7a - 7d

eine schematische Darstellung einer siebten Ausführungsform eines erfindungsgemäßen Fadenführers mit schwenkbarem Fadenführer-Arm in unterschiedlichen Stellungen des Fadenführer-Arms;

Fig. 8a - 8d

eine schematische Darstellung einer achten Ausführungsform eines erfindungsgemäßen Fadenführers mit schwenkbarem Fadenführer-Arm in unterschiedlichen Stellungen des Fadenführer-Arms.

In detail show:

Fig. 1a - 1d

a schematic representation of a first embodiment of a yarn guide according to the invention with linear adjustment of the yarn guide arm in different positions of the yarn guide arm;

Fig. 2a - 2d

a schematic representation of a second embodiment of a yarn guide according to the invention with linear adjustment of the yarn guide arm in different positions of the yarn guide arm;

Fig. 3a - 3e

a schematic representation of a third embodiment of a yarn guide according to the invention with a pivotable yarn guide arm in different positions of the yarn guide arm;

Fig. 4a - 4d

a schematic representation of a fourth embodiment of a thread guide according to the invention with a pivotable thread guide arm in different positions of the thread guide arm;

Fig. 5a - 5f

a schematic representation of a fifth embodiment of a yarn guide according to the invention with a pivotable yarn guide arm in different positions of the yarn guide arm;

Fig. 6a - 6d

a schematic representation of a sixth embodiment of a yarn guide according to the invention with a pivotable yarn guide arm in different positions of the yarn guide arm;

Fig. 7a - 7d

a schematic representation of a seventh embodiment of a thread guide according to the invention with a pivotable thread guide arm in different positions of the thread guide arm;

Fig. 8a - 8d

a schematic representation of an eighth embodiment of a thread guide according to the invention with a pivotable thread guide arm in different positions of the thread guide arm.

In all figures, functionally identical elements are designated by the same reference numerals, even if they have a different shape.

Fig. 1 shows a yarn guide 1 in its functional level, wherein in the FIGS. 1a and 1c to 1d in the Fig. 1b shown cover 7 is omitted for clarity. This was also the case Fig. 2 to 8 handled this way.

The yarn guide 1 has a yarn guide box 2 and a slider 3, on which a yarn guide arm 4 is arranged vertically displaceable. The slider 3 is horizontally displaceable with respect to the yarn guide box 2. The horizontal movement of the slider 3 is by a bolt. 10 triggered an otherwise not shown yarn guide driver. The bolt 10 can move in the direction of the arrows ML, MR and MD, MU. The yarn guide arm 4 can move with the yarn guide 1 in the direction of the arrows FAL, FAR and FAD, FAU.

In Fig. 1a the yarn guide 1 is located more directly at the end of the yarn feed, for example at the end of a color field of an intarsia knit, after a movement from right to left. The bolt 10 abuts a driving surface 21 of the yarn guide box 2 and a driving surface 31 of the slider 3 and thus has the yarn guide 1 moves to the moment shown in the direction of the arrow ML. As long as the bolt 10 abuts the driving surfaces 21, 31 of the yarn guide box 2 and the slide 3, the yarn guide arm 4 is in its working position, ie horizontally in the middle of the yarn guide box 2 and vertically at the lowest position in the direction of the arrow FAD. To be able to bring him from this working position in an off-mode position, the yarn guide arm 4 is mounted vertically displaceable in a groove 38 of the slider 3. In addition, the yarn guide arm 4 has a pin 41 which engages in a control cam 28 of the yarn guide box 2. By horizontal Moving the slider 3, the yarn guide arm 4, for example, in the in Fig. 1c brought out of action position shown. The horizontal movement of the slider 3 in the yarn guide box 2 is limited to the left by a rounding 33 on the slider 3, which comes to rest on a surface 29 of the yarn guide box 2. To the right, the movement is limited by a rounding 34, which comes to a surface 29 'of the yarn guide box 2 to the plant.

To trigger the horizontal movement of the slider 3, this is firmly connected to racks 35, 36. Furthermore, two switching elements 5, 6 are provided, which are rotatably mounted on bolts 24, 25 and engage with a toothing in each case in one of the racks 35, 36. The switching elements 5, 6 perform synchronous rotational movements. At its upper end, the slider 3 also has a groove 39 which is congruent with a groove 26 of the yarn guide box 2 when the yarn guide arm 4 is in its working position.

At the end of the yarn feeding the bolt 10 is raised by a device, not shown in the direction of the arrow MU so far that its foot surface 11 is in a higher position than the top 27 of the yarn guide box 2. Once the bolt 10 is raised brings a brake device, not shown, the yarn guide 1 immediately to a halt. As the bolt 10 moves further in the direction of the arrow ML, it is lowered in the direction of the arrow MD so far that it can detect a switching nose 51 of the switching element 5. As a result, the switching element 5 is pivoted and moves over the rack 35, the slider 3 so far to the right until it rests with its curve 34 on the surface 23 of the yarn guide box 2 and thus ends its movement. Subsequently, the bolt 10 over the Surface 500 of the switching nose 51 raised in the direction of the arrow MU and moved across the switching nose 51 away.

The yarn guide arm 4 has its vertical mobility within the slider 3 and its leadership in the cam 28 its in Fig. 1c it is moved horizontally in the direction of the arrow FAR and simultaneously raised from level 281 to the level 282 of the curve 28.

While Fig. 1b a section through the thread guide 1 from Fig. 1a pointing along the line AA is in Fig. 1c shown how the yarn guide arm 4 is brought into action in the same direction of movement of the bolt 10 in which it was brought out of action.

The bolt 10 is moved both in the direction of arrow ML and in the direction of arrow MD and thereby engages in a groove formed by driving surfaces 31 and 22 a. During its further movement in the direction of the arrow ML, the bolt 10 comes to rest on the driving surface 31 of the slider 3 and thereby moves it horizontally until its driving surface 31 comes into contact with a driving surface 21 of the yarn guide box 2. The yarn guide arm 4 also performs a horizontal movement by the same distance as the slide 3 and is simultaneously moved by the curve 28 vertically downward in the direction of the arrow FAD. He takes back his working position.

The switching elements 5 and 6 have performed a rotational movement, so that their switching lugs 51 and 61 are again in the home position.

Once the driving surface 31 of the slider 3 and the driving surface 21 of the yarn guide box 2 are congruent, the yarn guide arm 4 is in its working position, and the yarn guide 1 is taken from the bolt 10 to supply a thread to the needles not shown here.

Fig. 1d shows how the yarn guide arm 4 in a direction of movement of the machine carriage, not shown here opposite to the direction in which the yarn guide arm 4 was put out of action, is brought back into working position.

The bolt 10 moves in the arrow direction MR and is lowered vertically as far in the direction of the arrow MD that it can detect the switching nose 51 of the switching element 5. As a result, the switch element 51 performs a pivoting movement in the direction of movement of the bolt 10, whereby the slider 3 is moved so far to the left over the rack 35 until its driving surface 32 coincides with the driving surface 22 of the yarn guide box 2. Characterized the yarn guide arm 4 is moved by the same distance as the slide 3 horizontally in the direction of the arrow FAL, wherein he performs at the same time by the curve 28 a vertical movement into its working position. Subsequently, the bolt 10 continues to move in the same vertical position in the direction of the arrow MR until it is above a groove 26, 39 formed by the yarn guide box 2 and the slider 3. He then performs a vertical movement in the direction of the arrow MD and thus can detect the driving surfaces 22 and 32 of the yarn guide box 2 and the slider 3 and take the yarn guide 1 so that it can supply the needles thread.

In each of the two directions of movement of the yarn guide 1, the bolt 10 is located either on the congruent driving surfaces 21, 31 or 22, 32, whereby the yarn guide arm 4 is fixed in its working position and the racks 35, 36 are in their basic position.

As well in Fig. 1 As well as in the other figures, the control and switching processes are shown as an example, which must be carried out for the disengagement of the yarn guide arm 4 when the yarn guide 1 has supplied the needles with the yarn in a movement from right to left. If the yarn guide 1 has moved from left to right, the control and switching processes are identical, but the bolt 10 acts on the opposite driving surfaces and the opposite switching element 6 described above.

Fig. 2 shows a further embodiment of a yarn guide 1, wherein the yarn guide arm 4 is moved by an overlay of a horizontal and a vertical movement in its out-of-service position and back.

In this embodiment, the slider 3 is again mounted horizontally movable in the yarn guide box 2. This movement is limited by stops 29, 29 'for the side surfaces 33, 34 of the slider 3. The slider 3 is connected to articulation points 81, 82 with a toothed belt 8. As switching elements 5, 6 again rotatably mounted elements are provided with switching lugs 51 and 61, said switching elements 5, 6 have a toothing and the toothed belt 8 is guided around the switching elements 5, 6. As long as the yarn guide arm 4 is in its working position, the here also provided Groove 36 of the slider 3 congruent with the groove 26 of the yarn guide box 2, and the switching elements 5, 6 are in their normal position. In this embodiment, the switching elements 5, 6 perform a synchronous rotational movements in the same direction of rotation.

Apart from the drive by means of a toothed belt 8 instead of racks 35, 36, this embodiment is equal to the embodiment of Fig. 1 , Therefore, also in the FIGS. 2a . c and d shown movements of the slider 3 and the yarn guide arm 4 identical to those Fig. 1 ,

Fig. 3 shows a first embodiment of a yarn guide 1 according to the invention, in which the yarn guide arm 4 performs a pivoting movement between its working position and its non-operating positions. The pivoting movement of the yarn guide arm 4 is initiated via slide 3, 9. Both slides 3, 9 are guided horizontally movable in the yarn guide box 2. The yarn guide arm 4 is pivotally connected to both slides 3, 9 and also rotatably mounted about the axis 128. In addition, levers 5, 6 are provided as switching elements. The lever 5 is connected via a hinge 53 and the lever 6 via a hinge 54 with the slider 9. Both levers 5, 6 are held by springs 55, 56 in their working position. In this working position, surfaces 63 and 83 of the levers 5, 6 bear against the surfaces 51, 52 of the slider 9. The two slides 3, 9 are connected to each other via the yarn guide arm 4, in which arranged on the yarn guide arm 4 bolts 41, 42 respectively in grooves 37, 57 of the slide 3, 9 engage. Since the yarn guide arm 4 performs pivoting movements about the axis 128, the slides 3, 9 always move in the opposite direction.

In Fig. 3a is the yarn guide 1 at the end of the yarn feed, for example at the end of a color field after a movement from right to left. The bolt 10 of the yarn guide driver, which can be moved again in the direction of the arrows ML, MR, MU, MD, abuts a driving surface 21 of the yarn guide box 2 and a driving surface 31 of the slider 3 and has the yarn guide 1 to moved to the moment shown in the direction of the arrow ML. As long as the bolt 10 rests against the driving surfaces 21, 31, the yarn guide arm 4 is in its working position, ie it is oriented vertically and is located above the central axis of the yarn guide box 2.

At the end of the thread feeding the bolt 10 is raised by a device, not shown in the direction of the arrow MU so far that its foot surface 11 is in a position above the top 27 of the yarn guide box 2. As soon as the bolt 10 is raised, a brake device, not shown, brings the yarn guide 1 immediately to a stop. As the bolt 10 moves further in the direction of the arrow ML, it is lowered in the direction of the arrow MD so far that it rests on a slope 23 of the yarn guide box 2 and detects a button 33 of the slider 3. As a result, the slide 3 performs a horizontal movement in the direction of movement of the bolt 10 until the bolt 10 is raised by the slope 23 of the yarn guide box 2 to the height of the top 27 of the yarn guide box 2. Now, the slider 3 has reached its end position and thereby pivoted the yarn guide arm 4 in the direction of the arrow FAR in its off-mode position and the slide 9 with the levers 5, 6 in the opposite direction by the same distance.

While Fig. 3b a cut through Fig. 3a shows, illustrated Fig. 3c a partial section of the thread guide 1 from Fig. 3a but now the yarn guide arm 4 is pivoted to its off-mode position. The bolt 10 has been raised by a slope 23 of the yarn guide box 2 so far that it no longer has engagement with the surface 33 of the slider 3. The bolt 10 detects during lifting the lever 5 on its inner side 62. While the slider 3 is displaced in the direction of movement of the bolt 10, the lever 5 at the joint 53 makes a pivoting movement against the force of the spring 55 until it is pivoted so far, that the bolt 10 no longer abuts against its inside 62. Thereafter, the spring 55 pulls him back again until his surface 63 bears against the surface 51 of the slider 9 and he is back in its initial position.

Fig. 3d illustrates how the yarn guide arm 4 is returned to the operative position when the pin 10 moves in the same direction as it has brought the yarn guide arm 4 out of action. For this purpose, the bolt 10 is lowered in the direction of the arrow MD so far that it can detect an outer side 81 of the lever 6. In addition, the bolt 10 is displaced in the direction of the arrow ML, wherein he shifts the slide 9 via the lever 6 with. The slider 9 is connected by the groove 57 and the engaging therein pin 42 of the yarn guide arm 4 with this and therefore initiates a pivoting movement of the yarn guide arm 4 about the axis 128 in the direction of the arrow FAL during its displacement movement. The yarn guide arm 4 is also connected via the bolt 41, which engages in the groove 37 of the slider 3, with the latter. By the pivoting movement of the yarn guide arm 4, therefore, the slider 3 is moved to the right and the movements of the slide 3, 9 and the yarn guide arm 4 continue until the bolt 10 through the slope 26 of the yarn guide box 2 is raised so far that it is no longer in engagement with the lever 6. From this moment, the yarn guide arm 4 is in its working position, and the surface 31 of the slider 3 is congruent with the driving surface 21 of the yarn guide box 2. The bolt 10 continues in the direction of the arrow ML over the yarn guide box 2 away moved and lowered in the direction of arrow MD so that it can detect the driving surface 21 of the yarn guide box 2 and thus entrains the yarn guide 1.

In Fig. 3e It is shown how the yarn guide arm 4 is brought back into working position in a movement direction of the bolt 10 opposite to the action of non-action. For this purpose, the bolt 10 is lowered in the direction of the arrow MD so far that it can detect the surface 35 of the slider 3. In addition, the bolt 10 is moved in the direction of the arrow MR, wherein it moves the slider 3, and this transmits the sliding movement of the yarn guide arm 4, thereby performing a pivoting movements about the axis 128 in the direction of the arrow FAL. During this pivoting movement of the yarn guide arm 4 also shifts the slide 9 opposite to the slider 3. The movements of the slide 3, 9 and thereby the yarn guide arm 4 continue until the bolt 10 is raised by a slope 25 of the yarn guide box 2 so far is that it no longer rests against the surface 35 of the slider 3. At this moment, the yarn guide arm 4 is in its vertical working position, and the driving surface 32 of the slider 3 is congruent with the driving surface 22 of the yarn guide box 2. The bolt 10 is moved further in the direction of the arrow MR on the yarn guide 1 away and then lowered in the direction of the arrow MD so that it can capture the driving surface 22 of the yarn guide box 2 and thus the Can take thread guide 1 so that it can perform the needles thread.

In each of the two directions of movement of the yarn guide 1 of the bolt 10 is located either on the congruent surfaces 21 and 31 or on the congruent surfaces 22 and 32 at. As a result, the yarn guide arm 4 is in its working position, and the two slides 3, 9 are in their normal position.

Fig. 4 shows a further embodiment of a yarn guide 1, wherein the yarn guide arm 4 performs a pivoting movement to be brought from its working position to an out-of-service position and back. The embodiment is very similar to embodiment Fig. 3 , The main difference is that here the levers 5, 6 are firmly connected to the slide 9. In addition, the slide 3 except the driving surfaces 31, 32 nor buttons 33, 34 and buttons 35, 36 on. The to the Fig. 3a and Fig. 3d to Fig. 3e described sequences of movements apply analogously to the movements of the Fig. 4a and Fig. 4c to Fig. 4d to. It is therefore omitted here on a detailed description.

In the Fig. 5 shown embodiment of a yarn guide 1 with pivotable yarn guide arm 4 is almost identical to the embodiment Fig. 4 , However, this embodiment allows a pivoting movement of the yarn guide arm 4 in its off-mode position both in and opposite to the previous direction of movement of the yarn guide 1. For this purpose, the yarn guide 1 additional bevels 23 'and 24', on the yarn guide 1 from Fig. 4 absence.

Fig. 5a The bolt 10 engages the surface 33 of the slider 3 and moves it until the bolt 10 through the slope 23 so far in the direction of the arrow MU is raised, that he no longer has engagement with the surface 33. If the yarn guide arm 4 is pivoted in the direction of the arrow FAL in the previous direction of movement of the yarn guide 1 in its off-mode position, the bolt 10 engages the surface 62 of the lever 5 rigidly connected to the slider 9 and moves the slider 9 as long as until it is lifted by the slope 23 'so far that it no longer acts on the surface 62.

Fig. 5b shows a section along the line AA through the yarn guide 1 from Fig. 5a ,

In Fig. 5c is shown how the yarn guide arm 4, which was brought out of action by pivoting in the direction of the arrow FAR, is brought into action in the same direction of movement of the yarn guide 1, in which he was brought out of action. The movement of the parts of the thread guide 1 and the bolt 10 are the same as in Fig. 4c ,

Also the in Fig. 5d described operation for pivoting back the yarn guide arm 4 in its working position by a movement of the bolt 10 opposite to the direction in which he has brought the yarn guide arm 4 out of action, is identical to that in Fig. 4d described process. In this respect, reference is made to the description there.

Fig. 5e illustrates how the yarn guide arm 4 is pivoted back into the working position by a movement of the bolt 10 in the same direction in which it has brought the yarn guide arm 4 out of operation by pivoting in the direction of the arrow FAL. For this purpose, the bolt 10 moves in the direction of the arrow ML and detects the button 36 of the slider 3 and moves it until it is raised by the slope 129 'so far that it comes out of engagement with the surface 36. The entrainment of the thread guide 1 is effected by the contact of the bolt 10 with the driving surface 21 of the yarn guide box 2.

In Fig. 5f It is shown how the bolt 10, the yarn guide arm 4, which was brought out of action by pivoting in the direction of the arrow FAL, by a movement in the opposite direction to that in which he has brought the yarn guide arm 4 out of action, again pivoted back into the working position. In this case, the bolt 10 moves in the direction of the arrow MR and detects the surface 61 of the lever 5, which is fixedly connected to the slider 9, and moves it until it is raised by the slope 25 so far that the disengaged the surface 61 passes. The entrainment of the yarn guide 1 is carried out by applying the bolt 10 to the driving surface 22 of the yarn guide box. 2

In each of the two directions of movement of the yarn guide 1, the bolt 10 is located either on the congruent driving surfaces 21, 31 or 22, 32, whereby the yarn guide arm 4 is brought into its working positions.

Also in this figure, the movements are shown for pivoting the yarn guide arm 4 when the yarn guide 1 previously from moved right to left. When the yarn guide 1 moves from left to right, the movements are mirror images of those described above.

Fig. 6 shows a yarn guide 1 according to the invention, in which the pivoting movements of the yarn guide arm 4 are initiated by a switching cam 9. The pivoting movement of the yarn guide arm 4 in its off-mode position is opposite to the previous direction of movement of the yarn guide first

The thread guide 1 has here for adjusting the yarn guide arm 4, a slider 9 with a switching cam 54 and a slider 3 with a toothing 3 'on. The slider 3 and the slide 9 have slots 39, 59 and 39 ', 59', in the firmly connected to the yarn guide box 2 bolts 49, 49 'engage. As a result, they are mounted horizontally displaceable in the yarn guide box 2. The slide 3 is except with driving surfaces 31, 32 with buttons 33, 34 and 35, 36 and provided with bevels 37, 38. Also, the slider 9 has except driving surface 51, 52 and the switching cam 54 bevels 57, 58 and a recess 53. The recess 53 is provided on its underside with a toothing 9 ', which has an identical tooth profile to the toothing 3'.

In Fig. 6a the thread guide 1 is shown at the end of a driving movement. The bolt 10 of the thread guide driver is located on the driving surface 21 of the yarn guide box 2, the driving surface 31 of the slider 3 and the driving surface 51 of the slider 9 and has moved the yarn guide 1 to the moment shown in the direction of the arrow ML. The yarn guide arm 4 is in its working position, ie it is perpendicular in the center axis of the yarn guide. 1 arranged. The switching cam 54 is aligned symmetrically to the central axis of the yarn guide 1. The working position of the yarn guide arm 4 is locked in that fixedly connected bolts 41, 42 rest on surfaces 54 ', 54 "of the switching cam 54. If the pin 41 is acted on by the section 55 of the switching cam 54, the yarn guide arm pivots 4, in the direction of the arrow FAR, into its one non-operating position, on the other hand, when the bolt 42 is acted on by the portion 56 of the switching cam 54, the yarn guide arm 4 pivots in the direction of the arrow FAL into its other out-of-operation position, the pivoting direction being from the preceding direction of movement of the yarn guide 1 depends.

The slider 3 is coupled to the slider 9 via at least one gear 60, which is rotatably mounted on the yarn guide box 2. Therefore, the slides 3 and 9 always move in the opposite direction.

At the end of a yarn feed the bolt 10 is raised by a device, not shown, that its foot surface 11 is above the top 27 of the yarn guide box 2. By raising the bolt 10 also brings a brake device, also not shown, the yarn guide 1 here to stop immediately. Subsequently, the bolt 10 is further moved in the direction of the arrow ML and so far lowered in the direction of the arrow MD that it rests on bevels 23, 37, 57 of the yarn guide box 2 and the slide 3, 9 and the button 33 of the slide. 3 detected. As a result, the slide 3 performs a displacement movement in the direction of movement of the bolt 10 until it is lifted by the slope 25 of the yarn guide box 2 at the level of the top 27 of the yarn guide box 2. During his horizontal movement has the Slider 3 moves the slider 9 in the opposite direction to its final position. As a result of the movement of the slide 5, the locking surfaces 54 ', 54 "lose their effect on the bolts 41, 42, and the bolt 41 can be acted upon by the section 55 of the switching cam 54. As a result, the yarn guide arm 4 pivots about a rotation axis 128 in the direction of the arrow FAR into its non-activity position.

While Fig. 6b again a section through the thread guide 1 from Fig. 6a shows, illustrated Fig. 6c how the yarn guide arm 4 is returned to its working position by a movement of the bolt 10 in the same direction in which it has brought the yarn guide arm 4 out of action. For this purpose, the bolt 10 is moved in the direction of the arrow ML over the yarn guide 1 and lowered in the direction of the arrow MD so far that it can detect the surface 51 of the slider 9. Subsequently, the bolt 10 moves the slider 9 until the surface 51 is congruent with the driving surface 21 of the yarn guide box 2 and the yarn guide 1 is in motion and thus can supply the needles the thread. By the movement of the slider 9, the portion 55 of the switching cam 54 acts on the bolt 41 of the yarn guide arm 4 such that the yarn guide arm 4 pivots about its axis of rotation 128 in the direction of the arrow FAL back into its working position. The working position of the yarn guide arm 4 is fixed to the surface 54 "by abutment of the bolt 41 on the surface 54 'and of the bolt 42. By the movement of the slider 9, the slider 3 coupled thereto via the gear 60 is brought into its basic position , so that its driving surface 31 abuts the bolt 10.

Fig. 6d shows how the yarn guide arm 4 is brought into a working direction in a direction of movement of the bolt 10, which is opposite to the direction of movement of the bolt 10 for pivoting in the out-of-action position.

The bolt 10 moves in the direction of the arrow MR over the yarn guide 1 and is lowered in the direction of the arrow MD so far that it can detect the surface 35 of the slider 3. Subsequently, the bolt 10 moves the slider 3 until it is lifted by the slope 23 of the yarn guide box 2 so far that it comes out of engagement with the surface 35. The slider 3 is then as well as the slider 9 coupled to it in the basic position. By the movement of the slider 9, the portion 55 of the switching cam 54 acts on the bolt 41 of the yarn guide arm 4 and thus pivots the yarn guide arm 4 about the axis of rotation 128 in the direction of the arrow FAL in its working position. The bolt 10 continues to move in the direction of the arrow MR over the yarn guide 1 and is then lowered in the direction of the arrow MD so that it can catch the driving surface 22 of the yarn guide box 2 and thus take the yarn guide 1 with it.

Fig. 7 shows a yarn guide 1 with a pivotable yarn guide arm 4, wherein a slider 3 and a pinion 72 are provided for the introduction of movement. The pinion 72 engages a sector gear 44 at the upper end of the yarn guide arm 4. The slider 3 is mounted horizontally in the yarn guide box 2 movable. The movement is limited by stops 29, 29 'for the toothed segment 44 of the yarn guide arm 4. The slider 3 is connected to articulation points 81, 82 with a toothed belt 8. Next are switching elements 5, 6 rotatably arranged on the yarn guide box 2, which are in engagement with the toothed belt 8.

Fig. 7a shows the yarn guide 1 at the end of a portion of the yarn feed. The bolt 10 abuts the driving surface 21 of the yarn guide box 2 and the driving surface 31 of the slider 3 and has the yarn guide 1 moves in the direction of arrow ML until the time shown. When the bolt 10 abuts the driving surfaces 21, 31, the yarn guide arm 4 is in its working position. When the thread guide 1 is stationary, it can be brought into the off-mode position in the direction of the arrows FAL, FAR. It is pivotally mounted on the axis of rotation 128 on the yarn guide box 2. As long as the yarn guide arm 4 is in its working position, a groove 36 of the slider 3 and a groove 26 of the yarn guide box 2 are congruent. The switching elements 5, 6 are in their normal position.

At the end of the yarn feeding the bolt 10 is raised over the top 27 of the yarn guide box 2 and the yarn guide 1 is decelerated. Subsequently, the bolt 10 is moved further in the direction of the arrow ML and lowered in time in the direction of arrow MD so far that it can detect a switching nose 51 of the switching element 5 and thereby pivot the switching element 5. The rotational movement of the switching element 5 is transmitted through the toothed belt 8 on the slider 3, which thereby moves to the right. Since the slider 3 is engaged with the pinion 72 and the pinion 72 engages the sector gear 44 of the yarn guide arm 4, the yarn guide arm 4 is pivoted as long as the axis of rotation 128 in the direction of the arrow FAR until the sector gear 44 on the Stop 29 comes to the plant. Then the movement of the slider 3 is completed to the right. The switching nose 51 of the switching element 5 now forms a Sloping 500 over which the bolt 10 is raised so that it can move across the switching nose 51 away.

Fig. 7b again shows a section through the thread guide 1 Fig. 7a , and Fig. 7c illustrates how the yarn guide arm 4 is pivoted back into the working position by movement of the bolt 10 in the same direction as when it is being brought out of operation. The bolt 10 performs a movement in the direction of the arrow ML and a vertical movement in the direction of the arrow MD and engages in a groove formed by the surfaces 31, 22 a. During the further movement of the bolt 10 in the direction of the arrow ML he comes to the driving surface 31 of the slider 3 to the plant and moves it horizontally until the surface 31 comes to the driving surface 21 of the yarn guide box 2 to cover. The yarn guide arm 4 thereby performs a pivoting movement in the direction of the arrow FAL in its working positions. The switching elements 5, 6 are moved back to their basic position. Once the two surfaces 31 and 21 are in cover, the bolt 10 takes the thread guide 1, so that it can perform the needles thread.

Fig. 7d shows again how the yarn guide arm 4 is brought into action when the bolt 10 moves opposite to the direction in which he has set the yarn guide arm 4 out of action. The bolt 10 is moved in the direction of the arrow MR and lowered in the direction of the arrow MD so far that it can detect the switching nose 51 of the switching element 5. As a result, the switching element 5 performs a pivoting movement in the direction of movement of the bolt 10 and moves over the timing belt 8 the slider 3 so far to the left until its driving surface 32 comes to the driving surface 22 of the yarn guide box 2 to cover. The yarn guide arm 4 thereby leads a pivoting movement in the direction of the arrow FAL in its working positions. Subsequently, the bolt 10 is further moved in the direction of arrow MR, until it is above a formed by the yarn guide box 2 and the slider 3 groove 26, 36 and is lowered so that it the driving surfaces 22, 32 of the yarn guide box 2 and the slider 3 capture and can take the thread guide 1.

When the bolt 10 abuts the congruent driving surfaces 21, 31 or 22, 32, the yarn guide arm 4 is fixed in its working positions, and the switching elements 5, 6 are in their basic position.

Fig. 8 shows an embodiment of a yarn guide 1 with a pivotable yarn guide arm 4, in which the pivoting movements of the yarn guide arm 4 by a toothed slide 3, which on the toothed segment 44 of the same identical to the yarn guide arm Fig. 7 trained thread guide arm 4 attacks are initiated. There is also a further slider 9 mounted horizontally movable in the yarn guide box 2. Both the slider 3 and the slider 9 are fixed to a toothed belt 8, wherein the slider 3 at the points 81, 82 are connected to the upper part and the slider 9 at the points 83, 84 with the lower part of the toothed belt 8. In addition, again pivotable switching elements 5, 6 are provided on the yarn guide box 2, around which the toothed belt 8 is guided.

Fig. 8a shows the yarn guide 1 again at the end of a portion of the yarn feed. The bolt 10 is located on the driving surface 21 of the yarn guide box 2, the driving surface 31 of the slider 3 and the driving surface 91 of the slider 9 at. The thread guide arm 4 is in its working position, ie perpendicular to the central axis of the yarn guide 1. grooves 36, 96 of the slide 3, 9 are congruent with the groove 26 of the yarn guide box 2, and the switching elements 5, 6 are in their normal position.

The bolt 10 has been lifted over the top 27 of the yarn guide box 2, whereby the yarn guide 1 has been braked. Subsequently, the bolt 10 is further moved in the direction of the arrow ML, wherein it is lowered in the direction of the arrow MD so far that it can detect the switching nose 51 of the switching element 5. As a result, the switching element 5 performs a pivoting movement in the direction of the bolt 10 and moves over the toothed belt 8, the slider 3 to the left. Since the slider 3 with the sector gear 44 of the yarn guide arm 4 is engaged, the yarn guide arm 4 is pivoted as long as the axis of rotation 128 in the direction of the arrow FAR until the sector gear 44 comes to a stop 29 for conditioning. For the pivoting movement of the yarn guide arm 4 in the other direction, an analog stop 29 'is provided.

As soon as the toothed segment 44 abuts on the stop 29, the movement of the slide 3 to the left is completed. The switching nose 51 of the switching element 5 then forms a slope 500, via which the bolt 10 is raised, so that it can move across the switching nose 51 of time. The slider 9 has moved by the same distance as the slider 3, but in the opposite direction.

Fig. 8b illustrates the thread guide 1 off Fig. 8a in a sectional view.

Fig. 8c shows how the yarn guide arm 4 is brought by the bolt 10 in the same direction of movement in the working position in which he was put out of action. The bolt 10 is moved to the left and down, thereby engaging in a groove formed by the surfaces 91, 32. During its further movement in the direction of the arrow ML, the bolt 10 comes to rest on the driving surface 91 of the slider 9 and moves it horizontally until its driving surface 91 coincides with the driving surface 21 of the yarn guide box 2. The slide 3 coupled to the slider 9 via the toothed belt 8 is displaced in the opposite direction and thereby pivots the yarn guide arm 4 in the direction of the arrow FAL into its working position. The switching elements 5, 6 perform a rotational movement until their switching lugs 51, 52 are again in the home position. Once the driving surface 91 of the slider 9, the driving surface 31 of the slider 3 and the driving surface 21 of the yarn guide box 2 are congruent, the yarn guide arm 4 is in its working position, and the yarn guide 1 is taken from the pin 10 and thereby the Thread the needles again.

In Fig. 8d It is shown how the yarn guide arm 4 is brought into a working position by the bolt 10 in a direction opposite to the direction in which it was put out of action.

1. 1. Der Bolzen 10 bewegt sich in Richtung des Pfeils MR und ist so weit abgesenkt, dass er die Schaltnase 51 des Schaltelements 5 erfassen kann. Dadurch führt das Schaltelement 5 eine Schwenkbewegungen in Bewegungsrichtung des Bolzens 10 aus und bewegt über den Zahnriemen 8 den Schieber 3 in Richtung des Pfeils MR und den Schieber 9 in entgegen gesetzter Richtung, bis die Mitnahmeflächen 32, 92 mit der Mitnahmefläche 22 des Fadenführer-Kastens 2 zur Deckung kommen. Der Fadenführer-Arm 4 führt dadurch eine Schwenkbewegung in Richtung des Pfeils FAL in seine Arbeitsposition durch. Anschließend bewegt sich der Bolzen 10 in unveränderter vertikaler Position weiter in Richtung des Pfeils MR, bis er sich über der vom Fadenführer-Kasten 2 und den Schiebern 3, 9 gebildeten Nut 26, 36, 96 befindet. In dieser Stellung wird der Bolzen 10 abgesenkt, sodass er die Mitnahmeflächen 22, 32, 92 des Fadenführer-Kastens 2 und der Schieber 3, 9 erfassen und den Fadenführer 1 mitbewegen kann.
2. 2. Der Bolzen 10 bewegt sich nach rechts und wird in dem Moment abgesenkt, indem er sich über der von den Mitnahmeflächen 32, 91 gebildeten Nut befindet. Dadurch kann er die Mitnahmefläche 32 des Schiebers 3 erfassen und diesen solange verschieben, bis die Mitnahmefläche 32 mit der Mitnahmefläche 22 des Fadenführer-Kastens 2 deckungsgleich ist. Durch die Bewegung des Schiebers 3 wird der Fadenführer-Arm 4 in Richtung des Pfeils FAL in seine Arbeitsposition geschwenkt. Der Schieber 9 bewegt sich in entgegen gesetzter Richtung zum Schieber 3, wodurch seine Mitnahmefläche 92 zur Anlage an den Bolzen 10 kommt. Der Bolzen 10 liegt an der Mitnahmefläche 22, 32 und 92 an und kann dadurch den Fadenführer 1 mitnehmen. In jeder der beiden Bewegungsrichtungen des Fadenführers 1 liegt der Bolzen 10 an den deckungsgleichen Mitnahmeflächen 21, 31, 91 oder 22, 32, 92 an, wodurch der Fadenführer-Arm 4 in seiner Arbeitsposition fixiert wird. Die Schaltelemente 5, 6 befinden sich in Grundposition.

There are two possibilities:

1. 1. The bolt 10 moves in the direction of the arrow MR and is lowered so far that it can detect the switching nose 51 of the switching element 5. As a result, the switching element 5 performs a pivoting movement in the direction of movement of the bolt 10 and moves via the toothed belt 8, the slider 3 in the direction of the arrow MR and the slider 9 in the opposite direction until the driving surfaces 32, 92 with the driving surface 22 of the yarn guide box 2 come to cover. The yarn guide arm 4 thereby performs a pivoting movement in the direction of the arrow FAL in its working position. Subsequently, the bolt 10 continues to move in the same vertical position in the direction of the arrow MR, until it is above the groove 26, 36, 96 formed by the yarn guide box 2 and the slides 3, 9. In this position, the bolt 10 is lowered so that it can capture the driving surfaces 22, 32, 92 of the yarn guide box 2 and the slide 3, 9 and can move the yarn guide 1.
2. 2. The bolt 10 moves to the right and is lowered at the moment by being over the groove formed by the driving surfaces 32, 91. This allows him to detect the driving surface 32 of the slider 3 and this move until the driving surface 32 is congruent with the driving surface 22 of the yarn guide box 2. By the movement of the slider 3, the yarn guide arm 4 is pivoted in the direction of the arrow FAL in its working position. The slider 9 moves in the opposite direction to the slider 3, whereby its driving surface 92 comes to rest against the bolt 10. The bolt 10 abuts the driving surface 22, 32 and 92 and can thereby take the yarn guide 1. In each of the two directions of movement of the yarn guide 1 of the bolt 10 is located on the congruent driving surfaces 21, 31, 91 or 22, 32, 92, whereby the yarn guide arm 4 is fixed in its working position. The switching elements 5, 6 are in basic position.

Claims (9)

1. Thread guide (1) for a flat knitting machine which can be displaced longitudinally along a thread guide rail by a pin (10) of a thread guide carrier arranged on the machine slide, and which has a thread guide arm (4) with a yarn feeder, which thread guide arm can be moved by the pin (10) of the thread guide carrier from its working position to at least one idle position and back again, characterised in that the thread guide arm (4) can be returned to the working position by the thread guide carrier in the same and in the opposite movement direction of the machine slide in which said arm had been moved to the at least one idle position, and that it has at least one adjustment element (3, 9, 5, 6) for the thread carrier arm on which the pin (10) of the thread guide carrier can engage.
2. Thread guide according to claim 1, characterised in that the thread guide arm (4) has two idle positions arranged that are a mirror image to the working position.
3. Thread guide according to claim 1 or 2, characterised in that the thread guide arm (4) can be moved to an idle position which lags or leads the movement direction of the machine slide.
4. Thread guide according to one of claims 1 to 3, characterised in that the thread guide arm (4) can be moved from the working position to the at least one idle position by a vertical movement and a horizontal movement in the longitudinal direction of the machine.
5. Thread guide according to one of claims 1 to 3, characterised in that the thread guide arm (4) can be moved from its working position to the at least one idle position by a pivoting movement.
6. Thread guide according to one of the claims 1 to 5, characterised in that the pin (10) is arranged so that it can be raised and lowered on the thread guide carrier.
7. Thread guide according to one of claims 1 to 6, characterised in that the at least one adjustment element (3, 9, 5, 6) is a sliding element (3, 9) and/or a pivoting switch element (5, 6).
8. Thread guide according to claim 7, characterised in that the at least one pivoting switch element (5, 6) has gear teeth and engages with a toothed rod (35, 36) or with a toothed belt (8) in order to actuate the adjustment movement of the thread guide arm (4).
9. Thread guide according to one of claims 1 to 8, characterised in that the at least one adjustment element (3, 9, 5, 6) has several engagement surfaces (31, 32, 51, 61) for the pin (10) of the thread guide carrier.

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