DE2164557A1 - TEXTILE MACHINE WITH PERIODICALLY MOVED PARTS - Google Patents

Description

W.SchlafhorstÄCo » ¹⁰

405 Mönchengladbach -. - " _η

itwwtnbiffl «fSlroB · 143/148 Z I OH 00 /

405 Mönchengladbach -. - " _η December 25, 1971

iZ 00 / ''

Textile machine with periodically moving parts

The invention relates to a textile machine with periodically reciprocating parts, in particular needles or Parts of the same on knitting and knitting machines.

In an effort to increase the productivity of such machines, the highest possible speed is reciprocating parts required. Difficulties arise particularly when it comes to to suddenly initiate or interrupt a lifting movement. As an example of such a requirement, see the control of compound needles on warp knitting machines.

The previously known controls used for this purpose can only incompletely fulfill this task, as there are considerable masses when stopping and restarting have to be braked or accelerated and high reaction forces arise on the control elements. this has As a result, the machines only work with small stroke sequences and the control elements, such as clutches or the like, are subject to great wear.

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The present invention is based on the object to eliminate this disadvantage.

This object is achieved according to the invention in that for Purposes of switching on and off the periodic movements in the driving force path of the reciprocating Parts non-releasable connecting elements, in particular joints, are arranged in such a way that the moving parts During the switch-off state, the stroke is directed in a direction other than the direction selected during the switch-on state will. In this way, parts that are periodically moved back and forth, especially at high lifting speed, can be whose trajectory can be linear or curved, switch them on and off in quick succession, whereby the kinetic energy is not destroyed, but only diverted. Once that moved back and forth Work elements, such as knitting needles or the like, stand still, the lifting movement continues, but continues a stroke shift in another, for example, the opposite direction.

According to a further inventive feature, it is advantageous if, in order to deflect the stroke direction, one or several of the non-detachable connecting elements with their movements inhibiting or releasing control elements

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are bound. These control members can, for example consist of clutches or brakes influencing the connecting elements. In some cases, these are found Control members, however, as a disadvantage, since the inevitable game of these members to inaccurate ■ movements of the Fasteners leads. In order to avoid this, it is advantageous if the control members are also non-releasable are attached to the connecting elements. In addition, the control members can be arranged so that they can be transferred to a dead center position to inhibit movement.

Low switching forces and small holding movements as well as one secure fixation of the control members, as soon as they have been transferred to their dead center position, can be advantageous thereby achieve if, according to a further inventive feature, the non-releasable connecting elements two spaced rods exist, which on the one hand fastened and rotatable in the same plane on the other hand, are connected to one another by two partial rods forming a knee joint, the hinge point being a permanent one Lifting movement is issued and a pair of articulated levers is assigned to each rod as control members, which on the one hand is articulated with the rod and on the other hand with the end of a common switching lever »Here

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The ends of the switching lever can have stop members for the pairs of articulated levers, around the pairs of articulated levers when moving into the dead center position. aside from that it is advantageous to assign stop contours securing the switched-on or switched-off position to the pairs of articulated levers. These stop contours can be used on both of the Be attached to spaced apart rods, .also in the form of independent attachment points in a gear housing, which contains all elements such as rods, control elements, Articulated lever pairs and connecting elements receives, are located. The one that forms the hinge point of a knee joint The constant lifting movement given to partial rods can either be a cam, coupling cam or a lever mechanism be generated.

An embodiment of the invention is shown in the drawing and is described in more detail below.

Show it:

FIG. 1 shows the schematic representation of the subject matter of the invention with a locking device holding the connecting elements,

Figure 2 shows an embodiment with a lever joint instead of the knee joint according to Figure 1 and

Figure 3 shows a further embodiment with pairs of articulated levers as control elements.

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In FIG. 1, one recognizes the slide j5 of the compound needle, not shown, of a knitting machine, which slide is to be moved back and forth in the direction of the double arrow by the length of the stroke 2. A coupling cam, cam disk or lever mechanism, which is known per se and is also not shown here, generating the stroke 4, guides its movement via the rod and the pivot point 8 into a knee joint formed from the two partial rods 6 and 7. The switching lever 9 holds the joint 11 with the locking pin 10 so that this becomes the frame point of the knee joint and the joint 12 can execute the stroke 2. If the joint 12 is held in position 12 ′ by pivoting the Umsehalthebeis 9 with the locking pin IJ> , the joint 11 executes the stroke at the double arrow 14. With the dash-dotted lines 5 '* 6 ¹ and 7' the position of the knee joint is indicated when the joint 12 has reached its lowest position at 12 '.

Under certain circumstances, it can also be advantageous to provide a lever joint instead of a knee joint, as explained, for example, with reference to FIG. A constant lifting movement is also directed to the lever 55 in the direction of the double arrow j5J via the rod j54. The lever 35 swings with its end J> 6 in the guide back and forth, provided that all parts are in the drawn

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Are in position and the slide 3 does not perform any working movements in the direction of the double arrow 1. If the working movement of the slide 3 is to be initiated, the shift linkage ? Ö is displaced in the direction of the arrow until the end 40 of the lever 35 is released from the fork and the end 3d of the lever 35 is encompassed by the fork 4l. In this position, the end 40 can swing freely back and forth in the guide 43.

Figure 3 shows an embodiment in which the The stroke direction is deflected in such a way that as control members Serving articulated lever pairs 15> lö, 17 * Io into one Dead center position 19 or 19 'can be brought to earth and the hinge point 20 or 21 perform a constant lifting movement can. In this exemplary embodiment, too, the hub '4 is connected to two of a rod 22 forming a knee joint Partial rods 23> 24 passed to the knee joint point 25. The switching lever 26 brings the pairs of articulated levers 15, 16 and 17, 13 connected to the rods 27, 28, respectively in their dead center position. The stop members 29, 30 exert a supporting effect on the pairs of articulated levers the end. On the other hand, the dead center positions are supported with the stationary stop contours 31 and achieved. The dash-dotted lines and their reference numerals each indicate the stroke movement or to switch position;

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of the elements concerned. Also in this embodiment or other forms of solution of the inventive concept As in the exemplary embodiment according to FIG. 2, a lever joint can again be used instead of the knee joint will.

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Claims (5)

^ OSMönchenglodbocfl 10 ° 54 L1 / vdM. M3 / t4i 2 ^^ 12> 197I claims 1. Textile machine with periodically reciprocated parts, in particular needles or parts of the same on knitting and Knitting machines, characterized in that for the purpose of switching the periodic movements on and off as required in the driving force path of the reciprocating parts (3) non-releasable connecting elements, in particular Joints (11, 1?., · 20, 21) are arranged such that the parts (3) moving stroke (4) during the switched-off state in a different than that during the Switch-on state selected direction is directed. 2. Textile machine according to claim 1, characterized in that that to deflect the stroke direction one or more of the non-releasable connecting elements inhibit their movements or releasing control elements (9 * 1Oj 13J 15 to 18, 26 to 28) are connected. 3. Textile machine according to claim 2, characterized in that the control members (15 to 18, 26 to 28) also are non-releasably attached to the connecting elements. 30982 6/0662 XO 4. Textile machine according to claim 1 to J5, characterized by arranging the control members in such a way that they can be transferred to a dead center position to inhibit movement are. 5. Textile machine according to claim 1 to 4, characterized in that the non-releasable connecting elements consist of two spaced rods (27, 28) which are rotatably fastened on the one hand in the same plane and on the other hand by two partial rods (25 * 24) forming a knee joint are connected to each other, the knee joint point (25) is given a constant lifting movement (4) and a pair of articulated levers (15-18) is assigned as control elements to each rod, which on the one hand with the rod (2 ¹ J, 28) and on the other hand with the end of a common switching lever (26) is articulated. ό. Textile machine according to claim 5 *, characterized in that that the ends of the switching lever stop links (2 ° oJ50) for the pairs of articulated levers, ¹ J. Textile machine according to Claims 5 and 6, characterized in that stop contours (Jl, 32) which secure the switch-on or switch-off position are assigned to the pairs of articulated levers. 309826/0 682 Blank page