DE90825C - - Google Patents

Description

IMPERIAL

PATENT OFFICE. \ 4

PATENT LETTERING

CLASS 76: Spinning.

ERNST FRANKE in BERLIN.

with star-shaped arms.

Patented in the German Empire on April 18, 1896.

The present invention relates to a thread guide device for machines for winding star-shaped coils, through which a regular distribution of the windings between the star arms and the application of the last windings as close as possible to the Star arms and almost parallel to the same "is achieved for the purpose of making such coils to make it usable for sewing machines.

The kind of wrapping described is brought about by the fact that the wrapping on a movable Carrier attached thread guide needles during the duration of the winding of a bobbin rapid horizontal back and forth movement with variable deflection and at the same time a perform a slow up and down movement. With the former movement, the rash becomes gradually larger from the beginning of the movement, thereafter remains for a certain time constant and finally gradually becomes smaller again; when moving up and down the rash from the beginning of the winding, for which the thread guide needles on the Because of a section of the coils are set, steadily larger, and accordingly the drop in needles from the bobbins.

The needle bar, which carries the thread guide needles, is in stores for this purpose horizontally displaceable, which in turn both horizontally and vertically are adjustable and like the needles their movements by eccentrics by means of transmission members obtained whose points of oscillation are changed in their position that the movements of the thread guides are adapted to the different bobbin sizes can be.

In the accompanying drawing, FIG. 1 is a front view of a winding machine provided with this thread guide. Fig. 2 shows a section along line xx in Fig. 1, as well as that eccentric, through which the reciprocating movement of the needle bar BEZW. the variable rash of the same is produced; 3 shows a section along the line yy in FIG. 1 and the eccentric causing the gradually increasing up and down movement of the thread guide needles; Fig. 4 is a section along the line \ - \ in Fig. 1 and shows the eccentric serving for the horizontal return movement of the needle bar. FIGS. 5 to 7 show special views of the working process during the winding of the bobbins.

The winding of the bobbin A held in a rotating jig takes place in that the thread b ¹ passing through the ear b of a needle B reciprocated perpendicular to the bobbin plane is grasped by the arms α of the bobbin rotating in the direction of the arrow α.

The thread which reaches a section of the bobbin A when the needle deflects horizontally to the right (direction of arrow 1, FIG. 6), becomes the when the needle deflects horizontally

Needle to the left (arrow direction 2, Fig. 6) according to the bobbin rotation in the third of the led back to successive sections, whereby the thread alternately right and comes to the left of the coil surfaces. Because the number of coil arms is an odd one the thread is inserted into the skipped thread after one revolution of the bobbin Cutouts take place and the thread therefore comes in the same way on the two bobbin surfaces parallel layers.

As the winding progresses, the needle must be slowly moved back (in the direction of arrow 3, FIG. 5). So that the windings between the arms α do not cross at one point, as would be the case with a horizontal return of the needles, but are distributed evenly between the bobbin arms, the needle undergoes an up and down movement during its return (arrow direction 4 and 5, Fig. 5), which gradually increases from the beginning towards the end of the winding, as can be seen in the zigzag lines drawn between two arms a in FIG.

The horizontal deflection of the needle in the direction of arrows 1 and 2 is variable, namely it increases gradually from the beginning of the winding, according to the cross section of the winding, then remains unchanged for a certain time and finally gradually decreases again, whereby the thread position as possible becomes flat and comes to rest close to the arms a.

As a result of this type of winding, the thread is guided for a long time when it is pulled off the bobbin on the winding itself until the bobbin has been unwound so far that its arms hold the guide take over the thread, and it is therefore a sliding and transverse laying of the thread, as a result which also precludes the wear and tear of the latter that occurs as a result.

To achieve this effect, the thread guide needles B (Fig. 1 to 4) are adjustably attached to a rod C which is displaceable in bearings c which can be moved up and down in their bearing stands; the bearing racks themselves are again displaceable in guides c ¹ arranged on the table top D in the direction of the needles. In front of the needle bar, the rotating jigs for the bobbins A are arranged in stands E on the table, which can be opened and closed at the same time for the purpose of changing the bobbins. The thread b ^{1 to} be wound is fed to the needles from bobbins F via a tensioning device f.

The needle bar C receives its reciprocating motion from the crankshaft G through connecting rod g, lever g ' ² and linkage g ⁹ g " ¹ , the pin g ^{a of} which engages in the needle bar and the latter the up and down movement during its back and forth The course of action is permitted in which the forward and backward movement of the needle bar is conveyed by a joint g ⁷ .

The variable deflection of the needle bar is caused by the fact that the lever pivot pin changes its position while the bobbin is being wound. For this purpose it is mounted in an arm g ^{s of} the displaceable rod g ⁹ , which is connected to the lever g ¹¹ on which the eccentric H ¹ seated on the shaft H acts.

The forward and backward movement of the needle bar C in the longitudinal direction of the needles is conveyed by a second eccentric H ² , which acts on a lever h ^l which, by means of the lever mechanism h ³ ft ⁴ h ⁶ h ^7, moves the bearing uprights of the bearings c .

A third eccentric ^Η Ά acts on a lever mechanism z ^'2 P z' ⁴ and rotates by a W ^T elle z ^5, on which lever z 'sit ^6, the guide P c of the bearing and therefore these raised and lowered, in order to bring about the gradually increasing up and down movement of the needles required during the retraction of the needle bar.

In order to be able to adapt the movement of the needle bar to different bobbin sizes, the points of oscillation of the levers g ^l * .h ^l fi can be displaced by means of sleeves on these levers and the pins 3 of these sleeves can be rotated in bearings j arranged on the base plate J so that they can be adjusted.

The eccentric shaft H is driven by the crankshaft G, the movement of which is transmitted to the shaft k ² through a worm gear to the vertical shaft K and again through a worm gear to a horizontal shaft m ² , which is connected to the eccentric shaft by a chain drive stands.

Claims (1)

Patent claim: A thread guiding device for machines for winding threads on thread holders with star-shaped arms, in which the windings are regularly distributed between the star arms, placed as close as possible to the arms and almost parallel to them, characterized in that the before the beginning of the winding on the bottom of a The thread guide (B) set for the bobbin section during the entire winding period with simultaneous movement away from the bobbins by means of the needle bar (C), which is displaceable in its bearings (c), provides a rapid horizontal back and forth movement with variable deflection and at the same time vertical movement Displacement of the guides (F) of the needle bar bearings (c) a slow up and down movement with an increasing deflection in proportion to the decrease in the thread guide, the deflection during the former movement by changing the point of oscillation of a lever moving the needle bar (g ¹ ) 7M at the beginning of the winding gradually increases, then remains unchanged for a certain time and gradually decreases again towards the end of the winding. For this purpose ι sheet of drawings.