IL32851A - Machine for dosing and filling even thick liquids into bags of plastic material - Google Patents

Description

Machine for dosing and filling even thick liquids into bags of plastic material n The present invention relates to a machine for dosing and filling even thick liquids into bags of plastic material comprisingt a frame rotating with intermittent motion and carrying at its periphery a plurality of each adapted to be opened and as well as to hold by suotion the opening borders of the bag to be a plurality of upper dosing oylinders apt to measure and then discharge the dosed filling liquid into the bag placed belowi a device for supplying the empty bags to the machine at the beginning of the filling a pair of jaws for the borders after the filling has been completed and a device for discharging the filled The machine of the invention is characterized in that the intermittent motion is imparted to the rotating frame by means of a maltese cross which is exactly maintained its stop positions by a precision blocking device actuated by a first which is also responsible for the upland down displacement of the dosing cylinders and by a second cam providing for the immediate of the bags after the before the ating frame is set into for the filling of thick liquids into the bags a suction and pressure pump with adjustable cubic capacity being provided instead of the dosing The accompanying show a preferred non limitative embodiment o the machine of the Figure 1 a diagrammatic sectional view of the machine of the i Figure 2 is the relative plan view in reduced Figure 3 is plan View on the maltese Figure 4 a detailed of the precision device for Figure 5 is vertical sectional of the machine in correspondence of the rotating Figure is the axial section through a dosing Figure 7 is axial section through distributin cock for the Figure is detailed Vie of the device for immediately each bag a the Figure 9 is a plan view on the lever and cam for the various control Figure is a view of the systems providing for rapid closin of Figure is an axial sectional view of the suction and pressure pump for the thick With reference to Figures and the machine comprisesι the stationary mounting 1 supporting a frame rotating about the main shaft periphery of frame 2 there a plurality of jaws etc suited to hold by suction the opening the bag to be In the upper part of the as shown in Figure 1 there are provided a plurality of dosing oylinders 6 suited to measure and then discharge the dosed filling liquid into the bag below held by the jaws 4 but The machine also comprises device 7 for supplying the empty bags at the beginnin of the filling cycle a pair of 8 for borders of the bag ater the has been completed and a device 9 for charging the filled The machine is characterized inthat the intermittent motion is imparted the rotating frame 2 by means of a maltose cross 10 3 and which is exactly maintained in stop positions by a precision blocking device 12 so called controlled by a first cam 13 which aleqlserves to transmit an upward and downward motion to thb dosing 6 over lever systems 15 and 16 1 and second cam 17 serves to provide for the the of the and the instantaneously thermorwelding intermittent motion is imparted to the rotating frame as by maltese cross adapted to receive the pivot carried by the disc 39 rotating together with and In its lower potion the maltese cross 10 is provided with tapered reoesses adapted to receive the end of the pin 11 1 by the lever by the cam so as to in exact reached the said maltese cross and therewith the rotating frame this way it is more than sure that the jaws and and the various members carried by rotating frame 2 will take up their exaoly defined and desired Since from just filled bag a jet of liquid could possibly spout by inertie when the rotating frame starts provision will be made for a device closing the bag before rotation is Such a device is made up by 53 the diso 29 and having the tappet means 54 penetrating t erein and acting with its tip on the pivot 56 thereby closing the jaws 4 and therefore the bag before the 2 starts Figure 1 shows the device for feeding exaotly dosed quantities to the various bags in the liquids to be filled in To this scope there is provided a double action having a cylinder 70 provided with a piston 71 actuated by a connecting rod 72 and a crank This crank arm is adjustable to vary the s roke piston and hence the volume of the this case the dosing cylinders 6 of are left out of use and it will be the pump which directly feeds over the distributors 21 the dosed liquid into the insufficientOCRQuality

Claims (2)

WHAT IS CLAIMED ISi

1. Machine for dosing and filling even thick liquids into · ' ■ ■' ·' " ' -; : ' ■ ·' ■·' ; "■ ·. · ■ - .... : .1 ( . J, , i ,; _ . bags of plastio materia comprisin t a frame (2) rotating with intermittent motion and carrying at its periphery a plurality of Jaws (4» 4*i 4" etc.),each adapted to be opened and closed as well ' '"' , ·/ ' 1 ·"; ; > , ' ·" ; ' ' ·· ·' · · · ·· · ·, ■> . ' ; ... : . . . , .,■ .'. ; .! , , , as to hold by suction he opening borders of the bag to be filledf • *·· ' · · ' ' ' * · . , · , . , , , . , , I .. .. i l l . ; a plurality of upper dosing cylinders (6) apt to measure and then ' ■' 1 " '''' ' '" ' " · "' ■. " '' · 1 " ', ·'·, . '· · *'. '· I . ., '· , ,: · ,. ,;.· ' ; . . discharge the dosed filling liquid into the bag placed below| a device (7) or supplying the empty bags to the machine at the beginning of the filling cycle a pair of jaws (8) for thermo-impulse»welding the bag's borders after the filling has been completed and a device (9) for discharging the filled bags, characterized in that the intermittent motion is imparted to the rotating frame (2) by means of a maltose cross (lO) which is exactly maintained in its stop positions by a precision blocking device (11# 12) actuated by a first cam (13) which is also responsible for the up* and downward displacement of the dosing oylindere. (6) and by a second cam (17) providing for the immediate closing of the bags a ter the filling, before the rotating frame (2) is set into motionf for the filling o thick liquids into the bags a suction and pressure pump (70, 71) with adjustable cubic capacity bein provided instead of the dosing cylinders.

2. The machine as claimed in claim 1, characterized in that said precision blocking device consists of a pin (LI)operated over a lover (40) by /cam (13) so as to penetrate into, tapered recesses (12) of the laaltese cross (10) corresponding to the single stop positions of said malteee cross. 3» The machine as claimed in claim 1» characterized in that the device which is responsible for rapidly closing each filled bag consists of a disc (29) provided with a recess i ; (53) adapted to receive the tappet (54) entering therein, the tip portion (54*) of which controls the closing of the jaws (4) holding the bag* 4» The machine as claimed in claim 1, characterized in that in the case the bags are to be filled with thick liquids there ia provided instead of the corresponding dosing cylinder (6) a suction and pressure pump (70, 71) the pistonof which is actuated by a connecting rod-^plusrorank device (72,73)t the crank arm being adjustable to vary the. oubio capacity of the pump, said pump directly introducing the fluid into the relative bag over a distributing COHEN ZEDE & SPISBACH P. Ό..Box". Ί-169 Te'l-Avi v Attorneys for Applicant