US2942761A - Dispensing machine - Google Patents

Description

June 28, 1960 T. JUNGMAYR 2,942,761

DISPENSING MACHINE Filed March 3, 1959 4 Sheets-Sheet 1 T/ffODOR JZ/NQMA Y Q 7 flaw, JW M m Arryi June 28, 1960 "r. JUNGMAYR 2,942,761

DISPENSING MACHINE Filed March 3, 1959 4 Sheets-Sheet 2 4 Sheets-Sheet 3 Filed March 3, 1959 Fig. 3

t IJWWM 4 Sheets-Sheet 4 June 28, 1960 T. JUNGMAYR DISPENSING MACHINE Filed March 3, 1959 W A. 9 F g A u 4 7 B 4 MM y v. a w M \uw 6 7 ||||U DISPENSING MACHINE Filed Mar. 3, 1959', Ser. No. 796,830

Claims priority, application Germany Mar. 17, 1958 7 Claims. Cl. 222-162) This invention relates to a dispensing machine for measuring out commodities in powder form and charg- 1 ing containers with them.

It is known to measure out flowable loose material by means of so-called plate dispensing machines having continuously rotating dispensing chambers, and to charge the material thereby into packages. These machines have high rates of output, but are unsuited to the dispensing of some commodities which are inclined to stick and cake together, because such materials do not completely fill the measuring chambers or are not completely vacuated from them.

To cater for materials of this sort, dispensing has been carried out by means of feed screws, the amount of rotation of which per measuring operation can be adjusted to suit the required quantity of filling material. To obtain an increased output in cases of this sort, it

has been proposed to arrange a plurality of such screw' dispensers side by side in stationary fashion in a single machine and to operate and control them in unison.

This arrangement has the drawback that a plurality of packaging containers, corresponding in number to the screws, must be introduced simultaneously to the filling stations during the dispensing operation and must also be conducted away therefrom simultaneously, and this involves difi'iculties, particularly in the case of packaging machines with continuously-rotating conveyor means.

The object of the present invention is'to avoid this drawback, and to present a high capacity dispensing machine having a plurality of dispensing screws and to which the containers to be filled can be forwarded individually in a continuous series.

For this purpose, in the present invention the dispensing screws are arranged at regular intervals on a rotating distributor plate, and the operation and control of the screws rotating with the plate are derived from the rotary movement of the latter.

This novel screw dispensing machine can" give very high rates of output if use is made of an appropriately large number of dispensing screws, and can be built without difiiculty into any packaging machine having a continuously-rotating conveyor means.

Three embodiments of the invention are illustrated in the accompanying drawings, in which: I

Figure l is a cross section through a first embodiment of the screw dispensing machine,

Figure 2 is a plan view of the embodiment illustrated in Figure 1, J

Figure 3 illustrates a second embodiment of the invention in which clutches are utilised,

Figure 4 is a plan view of the embodiment shown in Figure 3,

Figure 5 is a partial side view of busbars used in the embodiment of Figures 3 and 4,

Figure 6 is a cross-section through an electromagnetic clutch,

Figure 7 is a cross-section through a mechanical clutch,

Figure 8 is -a plan viewof a third embodiment using cam control means, v

Figure 9 is a partial cross-section on an enlarged scale of the embodiment illustrated in Figure 8,

Figure 10 is a plan view of a unidirectional gearing, partially in cross-section,

Figure 11 is a side view of an adjusting instrument.

Referring to Figlres 1 and 2, the screw dispensing machine is arranged co-axially in relation to a reversing drum 4, of a continuously rotating conveyor device, for

' example an endless conveyor chain, a conveyor belt 1,

or the like, which conducts the packages P, between leading rails 41, 42, 43 continuously to the dispensing machine. Such conveyor devices are well-known to .men skilled in the art.

In more. detail, the screw dispensing machine comprises adistributor plate 2 which is connected by means of a tube '60 to and rotates with the reversing drum 4, a feed sleeve 9 fixed to the machine frame 44, and a plurality of dispensing screws 8 (for example -eight) which are arranged regularly in a circle on the distributor plate 2, and each of which turns in a package-filling sleeve 7. A cone 15 fixed to the plate 2 and a star 10 fixed to the frame 44. uniformly distribute the loose material, conducted through the sleeve 9, to the hopper- "form inle'ts 6 of the filling sleeves 7. The level of the filling material on the distributor plate 2 can be regulated by a sleeve 11 which is displaceable on the feed sleeve 9.

The dispensing and charging out of the filling material into the packages P occurs during the period in which the individual dispensing screws 8 are located above the respective packages P on the reversing drum 4 of the conveyor mechanism, and the screw 8 concerned being operated at this time. 1

In the embodiment illustrated in Figures 1 and 2, this is implemented by direct engagement between toothed pinions 12 secured to the shafts 13 of the dispensing screws 8 and a circular toothed segment 14 stationary on the machine. The number of rotations of the dispensing screws 8 required to measure out the specific quantity of filling is set by adjustment of the eifective length of the toothed segment 14, and for this purpose the segment is made in two parts and overlapping these parts, 14', 14, to a greater or lesser extent. For this purpose, the part 14" is provided with a longitudinal slot 46, so that the part 14" may be secured on the part 14' by means of screws 45 serving also to secure the part 14' to the machine frame.

The shafts 13 of the dispensing screws 8 are rotatably mounted in bearings 47 which are secured to the dispensing plate 2.:

In order to prevent filling material falling from the filling sleeves 7 if such sleeves are on the side opposite to the.filling side of the machine, there is provided a rail 62. Moreover, there is provided a channel 63 for receiving all parts of filling material falling alongside of thepackings P, The drive of the machine comprises an electro-motor 65 which drives by means of a belt 66 a gearing 67, 68. The shaft of wheel 68 drives by means of the gearing 70, 71 the. shaft 72 of the drum 4 of the conveyor 1.

In the embodiment illustrated in Figures 3-7 the .dis-

7 pick-ups 20; 216mm: elutclfe s is 52''vvhich serv sirnnltan were:

'of the plate 2, ahofit'their pivots. g The' tooth'ed V logsely rnpunte is ,pivotthejoothed disesi31'back r, p p

' dispositions in the opposite. dirgtion of rotation af thedis pensingn ovement has, heen-triansn i tdthere orn., .50 a V The free wheel devicfefifi incorporated therein' all bac k" rotation withoilt affecting thescrewr Fig 10, vgihiehisf seeufedytoiihe p nionf37;"and'fa"sa T likeformed 7'1 engagingiwith the' bell '70'and se- 7,0; r 1e1rs 12 whi h aren a sp i s s sesam 1 hell 7O FIf1t heIbelI 70is'tnrnedjn ,the direc tjon ofgth'ei P r eirted w springs 73; meane t" i nga m n iifilfi ll ih e i disllib p h i ri i n V V l g each dispensing .screw. "and ,1.

a transfer the rotation to the part 71. In the opp site di the teeth,:jwhrely thelclarnpihg ragetionis infl ru that-fmi'e transfer of the rotation "takes place. 7 "T ableet p fifl. qu nt t ofdisp 1 2,942,761 v a 3 a h 41 lhe length-of the upper busbarmay be changed-by means thus the number ofirotations of the corresponding screw of its parts 2.3"and 23" in the same way as described for W I p I A w the toothed segment 14 in Figures 1 and"2.'" i The 'carif'rail 39 may be adjusted by means of a spindle I Cnrrent'pick- ups 20, 21 are provided on each clutch 75 and a hand wheel 82, the spindle being turnably 16. A'I'he sepic kups are seenr ed to the bearings 42 of the v5 mounted in bearings 76, 77 on the machine frame 44 (cf.

shafts'13 and in contaet'witheoals 26; 21 e e ri ur en h i magnetic elutches 16 dispensing sorewsi r Fig. 11). A nut which is screwed on the spindle 75, is prevented from turning-: -.'Ihe Inut 78 has a bolt 80- which engages witha, longitudinal slotfil of the cam rail 39. This mechanisni allows alsd to adjust the quantity and are su Ly. fr i pensedsmaterialawhile:thermaehine isqunningh V To;coinplymiththeiueedaforsslow runofathe dispensing serews 8iat the beginning- 0f their rotation; which is important to secure an exact dispensing operation, the-starting portion ofgthzcangrfl;3q isigiven a shallqw curvature or is to shine eiten't feeentrie, whereby there is only a refativelyislightipivoting of 'tHEtootHed'dis'cs 3l at this early part per de ee ofi rotary nagven ent'of the distributor plate 2.

in .Sliding tac wi h h ibmbefi' l'; 31i rp m of 'energisation, and thus theilllilllbp: 1 of rotations o f-the screws, per dispensing operation can be adjustd as? de; n hen n i l ha t 1 1h Instead of jele ctrigally oper for' exan iple ini-Eigl 7-):j""]ih;e1;p V pensingserewsi 8' are driven is notth The inventlon 1s not hmited to the embodiments which The indivi u l l tches a e a ang d w ys; QQBLfiHH$3Zd1 flIlQ d scribed; above, but; can; be

H P: V q yablelwsemateriakupansaidplatefimeans adapted :to rotate-said plate, eontinnonsly, aiipluljalitynof idispensing avin l opps. i inlet; t

ating mt theisaid distri utor: plate;. 8. fixed: cam-like iq i 1 7 a. il rran ed bo nadaalt; ciat ed toothedjjgearing. Whefiihefiigr-ibzi p rotates; rollers 32 arrangedf on'itoothed againstfth e'am rail 39 5mg the discs filjare thereby v V m ned; duringit he course of th'e rotational movernent 911;; ispensing: crew adapte Each tree wheelrdevice 38 gornpr abe ike part 70; 7

eured to.the;sc rew shaft 13-. There are "alrranged, j he tween the individual teeth of the part 71 and the bell j be'clamped between the bell and the 'p a'rt .71Q3nd amounted loosely on the sh ft p f maaemlmnme hy i r dj Qthqdir n rcach pinion 7 being disengageably eonpled t a a?!sfiztoecqunlezsachzpinio nv termined period. i a

fion of I t n, th pa mw lling-needle 11 an Ref erences (iitedin the iile of this patent 1 UNITED STAIESHPATELIST V the toothedgdisesjt'tl to lae 2,531,913 Higginbottom Dec. 5,"-;, 19159" per dispensing operation to be adjustedin the sange way,.

istributor; plate-,5. means a to J feedv s a -adapted,toaotatem agpackagfi filling-sleeve saidahopper-like inlets b il i i ztangqd t irc1e;at, the-,underside-ot;theisaid: "distributo s; p ate, m ans; adapted 310,; drive 5 and control the rotation of the said dispensing screwsiromtheirotary fitheadistribut'or plate, ,a. partly ;.toot he,d ;di,se loosely; mpuntedeuponj the shaft of p v rolleriarranged onz.said dise. V i bfifal f l a n t' fl s ls xed:camdike.;rail, a;gearing fiBiQ-Q Win itrotation Omthe said disc .to; a-.pinion:..

lzt e shattof; the dispensingvscrew, and, a

; gearing; arranged :,bet ween; said: pinion:

-iclaimj, a gfixed, toothed segn; t arrangedahoyeisaidijdistributor;plate; and means; Qtatee aid1dispgllzsing screvvs comprisinglag ftmfgeanh; dispensing, screw, and, I vg {the otationsof' the-distributor:

aim, 5, injrlwhichtthe said 7

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