DE1916217A1 - Machine for dosing and filling even thick liquids into plastic bags - Google Patents

Description

9909. 13 / right

'■ // I T

Centra Anstalt, Vaduz (Liechtenstein)

Machine for dosing and filling viscous liquids into plastic bags.

The invention relates to a machine for dosing and filling viscous liquids into plastic bags with a rotatable structure with intermittent rotational movement, a number of opening and closing jaws arranged on the circumference, each of these jaws for holding a bag to be filled by suction of whose opening edge is designed, a number of cylindrical dosing containers arranged above it, which limit the amount of liquid to a certain level and empty the dosed amount into the plastic bag underneath, a loading device for empty bags at the beginning of the filling cycle, a pair of jaws for the thermo -Impulse swelling of the edge of the bag opening after filling and a depositing device for filled bags.

The invention is based on the object of such machines

"' to improve and one for the intermittent shooting sequence

008829/0133

to create simple and precise working facilities, so- ^; how to set up such a machine for filling thin as well as viscous substances.

The object is inventively achieved in that a Maltese cross transmission is for the regular cycle of movement and standstill 'of the rotatable structure is provided, which is held in its stoppage positions by a precision blocking W device in its exact position, wherein for the actuation of the blocking device, and at the same time a first cam for raising and lowering the dosing cylinder and a second cam for immediate closing of the bags after filling and before further rotation of the rotatable structure, and a suction and pressure pump. with adjustable cylinder content for filling the bags with viscous liquids and can be used instead of the 'dosing cylinder. ,

An exemplary embodiment is described below with reference to the accompanying drawings the invention described in more detail. Ss show:

FIG. 1 shows a vertical section through the exemplary machine;

FIG. 2 shows a plan view of the machine according to FIG. 1 on a reduced scale Scale;

FIG. 3 is a plan view of the Maltese cross; ·

FIG. 4 shows the precision blocking device aea Maltese cross in detail; . . . » 009 * 29/0823

··· "5 -

Figure 5 is a vertical section of the machine through the drufr-

. > taren structure;

FIG. 6 shows a vertical section through a metering cylinder;

FIG. 7 shows a longitudinal section through the distributor slide for the metered liquid;

Figure 8 shows a detail of the "device, which the quick release the bag is activated after filling;

FIG. 9 shows a plan view of the entirety of the levers and levers for the various actuations;

FIG. 10 the levers for the quick release of the jaws;

FIG. 11 a longitudinal section through the suction and pressure pump for thick liquids.

Referring to FIGS. 1 and 2, the machine comprises a fixed frame 1 which carries the structure 2 which is rotatable about the main axis © 3 with intermittent rotation. On the circumference of the rotary. A number of jaws 4 »4 ¹ , 4" etc. (Fig. 2), by means of which the edges of the opening of the bag to be filled are held by suction. On top of the machine ( ¹ Fig. 1) are located on the top of the machine (Fig. 1) the dosing cylinder 6, which limit the amount of liquid to a certain amount and the dosed amount in the underlying plastic bag, not shown here, which is held by the jaws 4. Furthermore, the machine includes a loading device 7 for empty bags at the beginning of the filling cycle (71g. 2), a pair of jaws 8 for the thermal impulse welding of the edge of the bag opening after filling -

009829/0823

lungfe as well as a depositing device 9 for filled bags.

The machine is characterized by the fact that the regular Cycle of movement and standstill of the rotating structure 2 determined by a Maltese cross gear 10 (Fig. T, 3 and 5) and that said rotatable structure 2 is in its individual standstill positions by a precision blocking device 11 and 12 (Pig. 1,4) is held in its exact position, the blocking device by a first cam 13 (Fig. 1) which at the same time the task of lifting and lowering the metering cylinder 6 is actuated by levers 15 and 16 (Pig. 1 and 5). A second cam 17 (Fig. 1) is used the quick-release fastener of the filled bag before the rotatable structure 2 experiences a rotary movement, as will be described in more detail below is explained.

The entirety of the cams 18, 19, 20 (Figs. 1 and 5) on the secondary shaft 51 »which is arranged parallel to the main shaft 3 press the insertion of the empty bag and the jaws of the! Dhermo ^ high-speed welding 8.

The cycle of movement and standstill of the rotating structure 2 is, as already described, determined by a Maltese cross gear 10 (Figure 3), in which a pin 38, which connected to the disc 39 and carried by the shaft 51 is engaged (Fig. 1 and 5).

001129/0823

- 5 ~. ■ '■

In its lower part, the Meltesian cross 10 has the truncated cone-shaped depressions 12 (Pig. 5) into which the upper end of the pin 11 (Pig. 1 and 4) is actuated by the cam 13 via the lever 4-0 , engages and with which it is achieved that the said Maltese cross and thus also the rotatable structure 2 as well as the jaws 4 »4 ¹ » 4 "etc. and the various organs carried by the rotatable structure 2 are in the exact and desired position.

ν. .

As soon as the above-mentioned rotatable structure starts to move, some liquid could splash away from the just filled bag due to inertia. To prevent this, a device is provided which closes the bag before the above-mentioned rotary movement begins. Said device comprises a disk 29 (Pig. '1 _t 8, 10) with a gap 53 »into which the counterpart 54 penetrates, while its port set 54 * causes the jaws 4 and at the same time also the bag to close before the rotatable structure starts moving. .

Pigür 11 shows the device which allows very thick liquids to be filled in precisely dosed quantities. In the present case, a double-acting pump is used for this purpose, the cylinder 70 of which contains a piston 71 which is moved by means of a push rod 72 and a crank 73. The length of the lever arm of the crank can be regulated, which also enables the stroke of the piston 71 and thus the volume of the liquid.

009829/082 3

-D-

to vary. In the present palle, the beer cylinders 6 of the machine is not actuated and the pump itself is delivering the dosed amount directly into the bag via the distributor slide (Pig. 6 and 7).

009829/08 2 3

Claims (4)

Claims Machine for! Dosing and filling also viscous liquids in plastic bags with a rotatable structure (2) with intermittent rotating movement, a number of opening and closing jaws arranged on the circumference (4 _f 4 * »4-" etc.), each of these Jaws for holding a bag to be filled by suction from the edge of the opening, a number of cylindrical dosing containers (6) arranged above, which limit the amount of liquid to a certain level and empty the dosed amount into the plastic bags located below, a loading device (7 ) for empty bags at the beginning of the filling cycle, a pair of jaws (8) for the Ehermo pulse feed of the edge of the bag opening after filling and a depositing device (9) for filled bags, characterized in that for the regular cycle of movement and Standstill of the rotatable structure (2) a "Maltese cross gear (ΙΟ) is provided, which is held in its exact position in its standstill positions by a precision blocking device (11, 12), a first cam (13) and an immediate closing for actuating the blocking device and at the same time for raising and lowering the dosing cylinder (6) the bag after the 009829/0823 Bottling and before further rotation of the rotatable structure a second squat (17) is provided, and that one Suction and pressure pump (70 »71) with adjustable cylinder content for filling bags with viscous liquids Liquids provided and instead of the dosing cylinder can be used. . . 2. Machine according to Claim 1, characterized in that ^ the precision blocking device has a pin (11), which can be actuated by the cam (13) via a lever (40) and in a corresponding number of truncated cones shaped depressions (12) in the Maltese cross (10) can be pushed in when it is at a standstill. 3. Machine according to one or both of the preceding claims, characterized in that the. Device which is designed for the quick closure of each filled bag, has a disc (29) with a gap (53) into which a counterpart (54) engages, on which an extension (54 ¹ ) for closing the bag carrying one Jaws (4) is formed. 4. Machine according to one or more of the preceding Claims, characterized in that the piston (71) the suction and pressure pump (70, 71) provided for viscous liquids by means of a push bar and crank (72, 73) existing device can be actuated, the length of the lever arm of the crank for dosing 0 0 * 982 97 082 3 tion of the delivery rate of the pump can be regulated, and that the pump can be operated directly via a distributor slide with the corresponding The bag is connected by bypassing the dosing cylinder (6) located above it, which is switched off in this case * that is. 0QÖ829 / 0823