US2078355A - Lap-forming apparatus - Google Patents

Description

April 27, 1937. J. WEINBRENNER LAP FORMING APPARATUS Filed Oct. 29, 1932 I 4 Sheets-Sheet 1 Aprifl 27,1937. J V'VE,NBREN E' 2,078,355

LAP FORMING APPARATUS Filed Oct. 29, 1952' 4 SheetsSheet 2 ApriE 27, 1937. J. WEINBREN NER 2,078,355

LAP FORMING APPARATUS Filed 001:. 29, 1932 4 4 Sheets-Sheet 3 Apiil 1937- J. WEINBRENNER 4 2,078,355

LAP FORMING APPARATUS Filed 'oct. 29 1952 4 Sheets-Sheet 4 Jnl/en for.-

Ju/ea Welhbrenner w 42:

a fur n g Patented Apr. 27, 1937 UNITE-o STATES .PATEENT *O 'FFl-"CE Jules France Application October '29, 1932, Serial No. 640,232 In :France November- 4,1931

2 Glaims.

The present invention relates to a lap-forming apparatus characterized-by its automatic working and anew method of feeding with slivers.

Lap-forming apparatus of this .type generally 5 comprise a V-shape'dtable-and seven to -fourteen feeding cans on each side, and the fleece orlap produced by such apparatus has a Width-c1190 to 305 mm.

Each ribbon passes upon a sliver .diverting 10 means towards the'dra-wing rollers, forthepurpose of being afterwards assembled in a fleece. The drawing operation increases in proportion to the quantity of the slivers to 'be drawn and to the thickness of the lap to be drawn. For this 1;; reason, it is necessary to increase the width of the fleece delivered with'respect to the quantity of the assembled slivers, as the apparatus presently in use do .not allow to secure a good result in assembling Ifor instance 28 ribbons to form a fleece having a width of 1 80 mm. and less, such f; width.

In conformity with the presentinvention, a plurality of roller heads are arranged between the table and the lap roller, so that a reduced number of slivers may be separately drawn, and

curved guide plates having a deflecting'surfa'ce are arranged in a corresponding number, lfor the purpose of assembling the "separately drawn fleece.

The united fleeces are then wound-upon tubes.

When a suflicient length is wound or when the lap roller has attained sufficient diameter, the apparatus is automatically stopped and the lap roller is removed from the apparatus, while at the same time another empty tube, supplied by 2. feeding chamber, is automatically brought in position in the place of the wound lap roller, and the machine is automatically started.

In the accompanying drawings, a form of embodiment of the lap-forming apparatus is illus- 5 vtrated by way of example.

Fig. 1 is a plan view of an ordinary lap-forming apparatus;

Fig. 2 is a plan view of the improved lap-forming apparatus comprisingtwo sets of fleece drawing devices;

.Fig. 3 illustrates.diagrammatically a form of embodiment of the improved lap-formingapparatus, in which the slivers are fed from rollers;

Figs. 4 and 5 are diagrammatic elevations of the improved lap-forming machine fed with ribbons according to the arrangement illustrated in Fig. 2;

Fig. 6 is a diagrammatic elevation of the mechanism controlling the stopping of the machine 60 when the lap roller is completely wound, the removal of said lap, the introduction of an empty tube and the restarting of the apparatus;

Fig. 7 is a diagrammatic end elevation of the mechanism illustrated in Fig. 6;

'Fig. 8 is a diagrammatic view of the mechanis illustrated in 'Fig. 6 and showing the driving ele- "ments for the conveying rollers and the winding rollers;

Fig.9 is a horizontal section of the driving gear for the'rack bars provided in the mechanism for securing the freeing and removal of the wound lap roller.

.In lap-forming apparatus of known type, as illustrated in Fig. '1, is provided a V-shaped table I, and feeding cans 2 are arranged at the sides; 3 designates the drawing rollers and! the pressing rollers.

In the'new apparatus illustrated in Figs. 2 to 5, 5 designates'the V'-shaped table upon which are juxtaposed 2 17==34 ribbons, delivered by the thirty-four cans'6 -arrangedon both sides of the table. From said thirty-four ribbons, seventeen are directed towards the 'drawing'head 1, and the seventeen others are directed tothe drawing head 8, said drawing heads "being constructed as usually, i. e. comprising fluted bottom rollers and pressing top rollers.

After the drawing operation, which is per- .formed without difficulty, each fleece portion passes over a curved plate 9, l respectively, having deflecting surfaces, so that said portions are now directed towards the conveying rollers H and; over guides 12, towards the pressing roller l3 and the winding rollers 14. The pressing rollor and the winding rollers compress the separate ribbons, so as to constitute a fleece 35 which is wound upon a single .roller '44.

The-winding mechanism of the rollers acting upon the tubes and the automatic supplying of said tubes are diagrammatically illustrated in Figs. 6 and 7.

The rotation of the conveying rollers H is performed in a well knownmanner by means of the fixed pulley .A, the shaft a and the pinions b. The winding roller M is rotated by means of the said shaft a, through the bevel-gears c, the pinion d, the toothed wheels'3'0, e and 1 (Figs. 6 and 8) The toothed wheel 3'!) is loose on its shaft 9 (Fig. 7) whereas the toothed wheel 1 iskeyed on its shaft h. It results therefrom that only the winding roller M is positively driven, whereas the roller ['4 and its shaft 9' are .driven by friction of the lap roller '35 upon which is pressing the pressure roller l3.

The lap-forming apparatus is provided, as usual, with a counter of known type, provided with wheels l'5 an'dl'li. These wheels have teeth I and IS.

The wheel I5 is mounted upon the lever H, the lower hook-shaped end of 'whichkeeps the control lever 98 in the on position. When the teeth 15' and i6, after a predetermined length of fleece has passed between the rollers II, contact with each other, the lever l'l swings about its axis l9 and frees its hook from the lever I8.

The lever 58 drops and causes the rotation of the shaft to which it is rigidly connected; thereby the lever system 20, 2|, 22 is moved and actuates a belt fork, which shifts the driving belt from the fixed pulley A upon the loose pulley B (Fig. 8). With the loose pulley B is formed a pulley B of small diameter, which, by means of the endless belt 2', drives the auxiliary shaft 70. This latter shaft, by means of convenient transmission elements, such as toothed wheels and endless chains, rotates the chain Wheel 29 (Figs. 7 and 8). This chain wheel 29 is loosely mounted upon theshaft g. r l

By the rotation of the shaft 25, the finger lfia, which is rigidly. fixed upon said shaft, is also rotated and thus presses thelever 23:(Figs. 6 and '7) This lever 23 swings about the shaft 24, so as to cause the partial rotation of the cam 26 and bring the latter in such a condition that the clutching claws 2.? and 23 of the claw clutch come in engagement with the corresponding elements 29 and 29" integral with the body of the chain wheel 2%! (Fig. '7).

The clutch element 28 is moved on a feather 28' along the shaft 9, said shaft 9 normally rotating together with the winding roller l4.

By the fact that the conveying rollers H are no longer rotating (their driving elements being stopped) but the roller l4 still rotating, the fleece will be severed by pulling intermediate both afor.e said rollers. During this, the winding roller I4 is not positively driven and remains unmoved, which meansthat it cannot be moved by the fleece-covered roller 35, because being'connected to the driving elements of themachine, it presents a too considerable resistance to frictional drive.

On the other hand, the coupling of the elements 2! and 29 causes the rotation of the chain wheel 32, which, by means of the endless chain 33 and the gear 33, will cause the rack bars 34 to ascend in a known manner (Fig. 9), and these rack bars will lift the discs 38 holding the roller 3%} and the pressure roller I3.

When a predetermined position of the rack bars reached, a setting screw 3'! urging the discs 36 towards each other, abuts against a fixed abutment 3B, which causes the unscrewing of the screw and the spacing of the discs 36. By this, the fleece-covered roller becomes free.

This roller 35 is then expelled under the action of the lever 39, actuated by a spring 40 and pivotally mounted upon its shaft 42, and said roller drops into the trough M (Fig. 6). The rotation of the lever 39 about its shaft 42 causes the opening of the flap 43 of the container 45, sothat a new core roller 44 will become engaged between the winding rollers, whereas the subsequent core rollers 44, 44", 44" and so on, are withheld in the container by the plate 43 fixed to the shutter 43.

During their ascending movement, the rack bars 34 will exert a pull upon the chain 46, by

means of which the lever l8 will be lifted. The shaft 25 is thereby rotated in the reverse direction as aforesaid. The return movement of the lever 23 is caused by the return spring I. The strength of this latter spring is so adjusted that it will be overcome by the dropping of the lever it. The lever 23 coming back to its initial position, causes the disconnection of the claws 21 and 28 from their elements 29' and 29". It results therefrom, that the chain wheel 32 is disconnected also, so that the rack bars 34 drop down under their own weight in the direction of the core roller 44 engaged between the winding rollers l4 and I4. Simultaneously, due to the return movement of the shaft 25, the levers 20, 2! and 22 are moved backwards, so that the driving belt is passed from the loose pulley B upon the driving pulley A. In this way, the conveying device is again operated.

The discs 36 and their set screw 3'! are lowered simultaneously with the rack bars 34, and in the lower portion of the stroke, the screw abuts against the slope 48, controlled by a spring 49,

so that the screw 31 is again'screwed home, so as to cause the discs 36 to'approach each other. By this approaching movement of the discs, the core roller 44 is again firmly held therebetween. From this moment a new cycle of operations is started.

I claim:

1. In a lap-forming apparatus of the type described in which a spring-controlled lever expels the wound lap roller when lying free upon the winding rollers, a container for the reserve tubes to form the lap rollers, a swinging shutter controlling the discharge opening of the container and positively moved by the aforesaid lever to deliver the first reserve tube towards the winding rollers, and a flap fixed at the outer end of said swinging shutter and adapted to prevent discharge of more than one tube from the container, substantially as described.

2. In a lap-forming apparatus, a table, means for diverting the slivers, a plurality of drawing heads adapted to separately draw a number of slivers to form ribbons, curved guiding surfaces arranged to assemble the ribbons in a fleece, conveying rollers for the fleece, means for winding the fleece upon a tube, said means comprising a pair of winding rollers, a movement transmission system for normally rotating the conveying rollers and one of said Winding rollers, a pressure roller acting upon the tube upon which the fleece is to be wound, rack bars controlling the action of said pressure roller, a pair of discs supported by said rack bars adapted to frictio-nally hold the ends of the tube upon which the lap is to be wound, means for axially moving one of said discs with relation to the movement of the rack bars and a control mechanism comprising a swinging lever adapted to stop the aforesaid transmission sys-' tem, means for causing the stopping motion of said swinging lever when a determined quantity of fleece is wound upon the tube, an auxiliary movement transmission system adapted to operate after the stopping motion of said swinging lever, a clutching device actuated by the stopping motion of said swinging lever and transmission elements for rotating the second winding roller while the first-mentioned winding roller and the conveying rollers are stopped, transmission elements actuated by said clutching device for moving said rack bars so as to release the pressure rollers, and means actuated by the moving rack bars for bringing said swinging lever to its normal operative position in which the first-mentioned transmission system is normally active and the auxiliary transmission system remains stopped, substantially as described for the purpose set forth.

JULES WEINBRENNER.

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