DE3007069A1 - DEVICE FOR FILLING A TOOTH VISCOSE PASTE - Google Patents

Abstract

1. Device for measured filling of a strongly viscous paste from a storage vessel into a cylindrical container (14) to be filled, with a filling tube (13) which can dip into the container (14) and has shut-off means, through which the paste is driven during the filling operation by means of a piston (7) out of an intermediate vessel (5) into the container (14) to filled, while the piston (7) has a cross sectional area which corresponds to that of the container (14), and with a filling conduit (4) with shut-off means, connecting the storage vessel with the intermediate vessel (5), characterized in that the intermediate vessel (5) is stationary, that the piston is constituted by an interchangeable plunger (7) with an axial bore, which continues via a first shut-off cock (12) into the conduit cross section of the filling tube (13), and that a second shut-off cock (3) is provided, which connects the filling conduit (4) with the intermediate vessel (5).

Description

3007063

PATENT LAWYERS

dr. V. SCHMIED-KOWARZIK · dr. P. WEINHOLD · Munich G. DANNENBERG · dr. D. GUDEL- dipl.-ing. S. SCHUBERT · Frankfurt

GROSSE ESCHENHEIMER STR. 39 6OOO FRANKFURTAM MAIN 1

TELEPHONE: (0611) 281134 + 287014 TElEX: 413 IIO

February 25, 1980 Gu / ki / schl

GE-HALIN-Maschinenfabrik GmbH Stone mill

6093 Flörsheim am Main
District: Wicker

Device for the metered filling of a viscous paste

130036/0281

description

The invention relates to a device for the metered filling of a viscous paste from a storage container in a cylindrical waste container with a filling pipe with a shut-off valve that can be immersed in the filling container, by which the paste is pressed from an intermediate container into the filling container during the filling process, with fixed filling container, the mouth of the filling pipe corresponds to the rising level of the paste in the filling container is accordingly pulled out of the filling container, and with one the storage container with the intermediate container connecting the filling line with the stopcock.

Such a device is described in DE-OS 2 610 of the applicant. To achieve that through this device Paste filled into the respective filling container (cartridge or the like) without air inclusions is filled, the intermediate container is designed there as a measuring cylinder with piston in such a way that the inner diameter of the measuring cylinder corresponds to the inner diameter of the filling container in question. During the filling process the lower end of the filling tube is pulled out upwards according to the level of the filled paste in the filling container, so that the paste is filled without air inclusions. The device has proven itself in and of itself. However, there are relatively high pressures required to fill the measuring cylinder, because this is over a three-way stopcock has to be filled. Also can sealing problems arise at the tap or at the upper end of the measuring cylinder. Furthermore, the measuring cylinder must with Pistons and other associated components are replaced when the paste is filled with another one Cross-section is to be filled.

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300706a

The invention is therefore based on the object Maintaining the principle according to which the opening of the filling pipe corresponds to the level of the filling during the filling process Paste in the filling container follows to further simplify the known device and in particular throttle points to avoid sealing problems during the filling process in the intermediate container and an adaptation of the To simplify the device on filling containers with a different cross-section.

Starting from a device of the initially mentioned type, the object is achieved in that the intermediate container is fixed, that the filling pipe is movable and interchangeable with its shut-off valve and in relation to the intermediate container thereinto or _o out, and that the cross-sectional area of the filling pipe is equal to the clear cross-sectional area of the filling container.

The intermediate container is now filled by the additionally «, filling line with shut-off valve, their cross-sections can be chosen at will. It just has to be for a good seal between the displaceable filling pipe and the intermediate container. Because the cross-sectional area of the filling pipe is equal to the clear cross-sectional area of the filling container, the level of the paste filled into the filling container follows during the process of pulling in the filling tube into the intermediate container of the lower mouth of the filling container. For the transition to filling containers with a other diameter only the filling pipe has to be exchanged, i.e. the filling pipe only needs to be pulled out of the intermediate container.

In order to be able to replace the filling pipe easily, it is preferred if the filling pipe with its lower end stands on a recess of a plate connected to a piston-cylinder unit, over the piston-cylinder unit

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_r 3 3Q07Q69

-A-

and the plate is also pushed into the filling tube during the filling process.

When changing to filling containers with other dimensions, as mentioned, the cross-sectional area of the filling pipe equal to the clear cross-sectional area of the filling container. To achieve this, the filling tube is in one The ring flange can be moved in a sealing manner and is screwed to the intermediate container in an exchangeable manner. So it takes only the unit consisting of the filling pipe with ring flange by a new unit with corresponding Dimensions to be replaced.

The invention is explained in more detail below with the aid of an exemplary embodiment from which further important features emerge. The figures show in a longitudinal section the sequence of a filling cycle ^f for filling a cartridge, namely

1 shows the start of the filling process, Fig. 2

to 4 the intermediate stations of the filling process and

5 shows the end of this filling cycle.

The device shown has a frame-fixed upper plate 1 with which two piston-cylinder units 2 are connected. In addition, an upper ball valve 3 is seated on the plate 1 and is inserted into a filling line 4 is used. The filling line is led to an intermediate container 5, which is also fixed to the frame and which is designed as a cylinder which is closed on its underside by an annular flange 6. A filling pipe 7 is sealingly inserted into the opening of the annular flange. The ring flange is over a union nut 8 attached to the intermediate container 5 so as to be easily exchangeable.

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A plate 9, which can be raised or lowered in the direction of the double arrow 10, is firmly connected to the pistons of the units 2. Centrally, the plate 9 has a recess adapted to the filling pipe 7 11, in which the _o filling pipe is inserted with its lower end. In addition, the plate has a bore which tapers downwards and which leads to a lower ball valve 12. This in turn continues down to a metering tube 13.

A filling container 14 to be filled with a paste, for example a cartridge or a tube, is in a Receiving piece 15 inserted from above. The recording piece in turn is inserted into a hole of a rotary table 16 with a piece of food 17 interposed. Of the Round table has several such receptacles for filling containers on the same arc.

Below the metering tube 13 and the receiving piece 15 there is a plate 18 which can be lifted by a pneumatic lifting cylinder 19.

The operation of the device is as follows: At the beginning of a filling cycle, the filling pipe 7 is completely in the The intermediate container 5 is drawn in by a corresponding actuation of the piston-cylinder units 2. The intermediate container 5, the filling line 4 and also the AbfUllrohr 7 with the metering tube 13 are, as shown in the drawing indicated, filled with a viscous paste. Both taps 3, 12 are closed. The waste container 14 is in a lower, lowered position (see FIG. 1).

The upper ball valve 3 is now opened and via a storage container (not shown) and the filling line 4 paste is pressed into the intermediate container 5, the lower ball valve 12 remaining closed. Through this Filling pressure is the plate 9 down in the in Fig.

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Moved position shown, the piston-cylinder units have been relieved accordingly to this movement to be able to participate. At the same time, by actuating the lifting cylinder 19, the filling container 14 was raised * with When the plate 9 was lowered, the filling pipe 7 was also extended. It is now the situation according to FIG. 2 achieved.

Then the upper ball valve 3 is closed and the lower ball valve 12 is opened (see FIG. 3) »

The actual filling process can now begin. For this purpose, the piston-cylinder units 2 are activated, which the Pull the plate 9 and thus also the filling pipe 7 upwards · It is removed from the interior of the intermediate container 5 displaces the same volume of paste as is filled into the filling container 14 at the same time. The mouth of the Dosing tube 13 therefore follows the level of the paste in the filling container 14. FIG. 4 shows the filled filling container 14, which now only needs to be locked.

For this purpose, the Hubyzlinder 19 is actuated again, which lowers the filled filling container 14 downward, as shown in FIG. After a further rotation of the rotary table 16, it can be removed from the receiving piece 15 and closed. At the same time, the lower ball valve 12 is also closed after the upper ball valve 3 had already been closed in the step according to FIG. 3. The state according to FIG. 5 is reached and the cycle can start again after a new filling container 14 has moved under the mouth of the metering tube 13 _{or the like}

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It has already been mentioned that the cross-sectional area of the filling pipe 7 is equal to the clear cross-sectional area of the Filling container 14 is. Because both the filling pipe and the filling container are circular cylindrical, the outer diameter is of the filling pipe 7 also equal to the inner diameter of the filling container 14. These ratios are in the Drawing not shown because the drawing is not to scale in this regard.

The diameter of the hole can be freely selected if the above condition is met. Preferably the diameter of the bore of the filling pipe 7 is chosen as large as possible, because then the flow resistance in the Bore is small. This is a major advantage of the novel device. Tests have shown that the novel device with a pressure of 70 to 80 bar at a cycle of 15 per minute, compared to a Pressure of 180 bar at the same cycle in the device according to DE-OS 2 610 396 mentioned at the beginning. The pressure can therefore more than halved. This is due to the larger cross-sections and the shorter paths that the paste takes in the device has to cover. The new type of device is therefore more gentle on the product.

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Claims (3)

ρ. ^ * —— ■ '- claims 1. Device for metered filling of a viscous Paste from a storage container into a cylindrical filling container with one that can be dipped into the filling container Filling pipe with stopcock through which the paste is discharged from an intermediate container during the filling up process is pressed into the filling container, with the fixed Filling container the mouth of the filling pipe to the rising level of the paste in the filling container is accordingly pulled out of the filling container, and with one the storage container with the intermediate container connecting filling line with shut-off valve, characterized in that the intermediate container (5) is stationary, that the Filling pipe (7) with its stopcock (12) relative to the intermediate container (5) and into and out of this is movable and interchangeable, and that the cross-sectional area of the filling pipe (7) is equal to the clear cross-sectional area of the filling container (14). 2 device according to claim 1, characterized in that the filling pipe (7) with its lower end on a Recess (11) of a plate (9) connected to a piston-cylinder unit (2, 2) stands up. 3. Apparatus according to claim 1 or claim 2, characterized in that that the filling pipe (7) is sealingly displaceable in an annular flange (6) which is exchangeable on the intermediate container (5) is screwed on. The patent attorney S. Schubert 130036/0281