DE2205841A1 - Method and device for reversing the stroke movement of the thread guide rod of a thread winding device - Google Patents

Description

Dr.-Ing. Wooden houses
Dipl.-Met. Goldbach

Patent attorneys OFFENBACH AM MAIN Hermstrasse 37 - Tel. 88 56 42

Dr.H./St,

Heberlein & Go. AG. CH-9630 Wattwil - Switzerland

Method and device for reversing the stroke movement of the thread guide rod of a thread take-up device

The invention is concerned with improvements to filament winding devices with regard to the reversal of movement of the thread guide rods.

In known thread winding devices with several winding points, the thread guides are usually in one Row on a common thread guide bange attached, which is deflected by the stroke required for the winding process will · It is with regard to equal It is essential that the winding structure is deflected by the yarn guide at a constant speed and beyond the reversal of direction in the shortest possible time and without noticeable

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borrowed deceleration or acceleration phase carried out becomes »The shorter, however, the available for negative or positive speed change Time, the greater the amount of acceleration per se, with which the required for a direction reversal Force at constant mass increases.

In known devices it has now been shown that, on the one hand, as a result of the extraordinarily large forces the drive devices must be largely oversized and beyond disproportionately strong wear is unavoidable.

In addition, the achievable stroke frequencies have so far been limited by the material strength of the force-transmitting parts. because with increasing frequency the speed of the moving masses increases and the direction reversal to the ver j The time available for the future is reduced, so that the acceleration and the forces that occur reach an insurmountable maximum

The invention is based on the object of avoiding the disadvantages of the known, in particular aleo a method and to provide a device for reversing the stroke motion of such oscillating yarn guide rods, which at relatively low driving forces and less Wear a significant increase in stroke frequencies

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allow.

According to the method according to the invention, this object is achieved solved by the fact that the stroke direction of the total » mass of the thread guide rod and components attached to it deflected in the opposite direction by at least partial reflection on a stationary body will.

According to the invention, the kinetic energy of the moving masses is not absorbed by the drive device and then an acceleration to the desired speed is carried out again, but rather a large part of the energy is obtained during the reflection and only deflected in the direction, so that the drive device and power transmission elements largely be relieved _e ,

The term "fixed body" to express that the stops are fixed such that a reflection is possible _e The stop may therefore, for example, also, it means to be a freely suspended buffer correspondingly larger mass or \, an opposing Puff ,,

The method according to the invention can advantageously be implemented with a device in which at least one , each at the apex of the deflection of the thread guide

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rerstange between a stop attached to the frame of the thread winder and one on the. Thread guide rod arranged holder elastically deformable reflector element for receiving and reversing the direction of the kinetic

Energy of the moved total mass is provided. The reflector element can, for example, be more compact and elastic Body, as a spring or also as a compressible, if necessary with regard to the output pressure adjustable gas | volumes can be realized, with an adaptation of moving mass, speed and deformation behavior in each case the reflector elements must follow the parameters specified by the drive to reverse the direction «If however, the stroke frequency does not occur during the entire operating cycle remains constant, or manual adjustment to different speeds should be avoided also an automatic setting of the reflection parameters (e.g. stop distances, gas pressure etc.) depending on conceivable from the selected stroke frequency.

The invention can be made particularly simple in the case of a winding device with a cam drum for generating the lifting movement, in which one is attached to a pin bearing Lead stone engages and wherein the pin bearing is connected to the thread guide rod and between two stops is axially freely movable, thereby realizing that on both sides of the pin bearing in the direction of movement reflector, _

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elements are predicted

The technical progress and the inventive content of the subject of the application are overall both through the new individual features and in particular through combination and sub-combination of the features used guaranteed »

The invention is in the following in one embodiment explained in more detail with reference to the drawings. Show it:

Fig. 1 is a schematic representation of a thread guide »·

rer drive device with the features of the invention and

2 shows a graphic representation of the forces occurring on the drive device as a function on the stroke frequency.

3 shows a modified thread guide drive device according to the invention

According to Figures 1 and 3 are on a thread guide rod 1 a

ι anaahl of thread guides 2 attached,

The thread guide rod 1 is held by a pin bearing 3, which in turn via sliding block 4 in a rotatable Drum 5 grooved groove 6 engages.

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As soon as the drum 5 rotates, slide blocks 4, pin bearings are filled 3, thread guide rod 1 and thread guide 2 make a stroke movement corresponding to the slope of the groove 6.

On both sides of the pin bearing 3 there is 3 * a rubber buffer 7a, 7b "is provided, which in each case shortly before reaching the apex of the lifting movement on the stop 8a or 8b runs up, such a reflection of the pin bearing 3 and the masses connected to it taking place, that a substantial relief of the sliding block 4 of the When the direction is reversed, forces are reached and the flanks of the groove are prevented from knocking out at the vertices will·

Figure 3 shows a variant of the embodiment according to FIG. 1, with a single frame-like stop 8 instead of the stops 8a, 8b attached to the machine frame is provided, which is freely suspended on the machine frame 9.

Figure 2 shows a comparative measurement of the load change

forces occurring as a function of the stroke frequency, ι where curve 1 recorded on a conventional device ! men and curve 2 the measurement data of a with the invention Device provided drive shows.

j The representation is achieved according to the invention

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Reduction of the forces occurring by 50% at the maximum!

frequency of 150 double strokes per minute can be seen; When evaluating the curve, it must be taken into account that j is the reflective element specifically for the frequency of 150 Double strokes per minute was designed so that the values below do not represent the achievable optimum

Although the reflector elements in the embodiment on Pin bearings are attached, an arrangement of the reflectors on the frame part can of course also be used as an equivalent solution be attached or only a single reflector can be provided when the stops are changed accordingly and / or the point of attack on the thread guide rod in the Lifting movement is reflected on both sides ©

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Claims (1)

Expectations: rl ·) Method for reversing the stroke movement of the thread guide rod a thread winding device, characterized in that the direction of stroke movement of the total mass of thread guide rod and all components attached to it through at least partial reflection on a stationary body is deflected in the opposite direction " 2β device for carrying out the method according to claim Ί, characterized in that at least one at the apex of the deflection of the thread guide rod (1) between a stop (8a, 8b) attached to the frame of the thread winding device and one on the thread guide rod arranged holder (3) elastically deformable reflector element (7a, 7b) for receiving and reversing direction the kinetic energy of the total moving mass is provided j 3 «device according to claim 2, characterized in that ι instead of the stops (8a, j 8b) a single frame-like stop (8) is provided, which is suspended from the machine frame (9). 209835/0818 3 ΐ 4. Device according to claim 2, characterized in that as a reflector element (7a 7b) a compact, elastic one Body is provided 5. Device according to claim 2, characterized in that a spring is provided as the reflector element (7a, 7b) 6. Device according to claim 2, characterized in that I the reflector element (7a, 7 * 0 on the bracket (8a, 8b) is attached 7. Device according to claim 2, characterized in that the reflector element (7a, 7b) is attached to the stop (3) 8, device according to claim 2 to 7 nii * a cam drum to generate deF stroke movement, in which an on one HublagQr attached sliding block engages and wherein the pin bearing is connected to the thread guide rod and between two stops is axially freely movable, characterized in that on both sides of the pin bearing (3) in the direction of movement Reflector elements (7a »7b) are vorgeaelion. 20 9 835/0818 Blank page