JPH0246443B2 - JUTENSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filling device for filling preferably cylindrical dispensing containers with liquid or pasty products.

The device has a filling station with a filling tube inserted into the dispensing container by relative movement with respect to the filling station and connected to a prechamber containing the product to be filled. .

Such a filling device may be designed such that the filling tube is inserted to the bottom of the dispensing container. However, such devices are complex, require long insertion times, and require the filled containers to remain in the vicinity of the filling station for long periods of time until they are finally transferred.

In the case of simpler filling devices, the filling tube is only partially inserted into the container to be filled.
However, such devices tend to cause agitation and bubbles inside the product being filled, resulting in damage to the product due to oxidation and phase separation.

SUMMARY OF THE INVENTION The object of the present invention is to provide a filling device of the above-mentioned type, which is capable of filling the bottom of a container directly and in a short time, and which is also capable of selectively filling below a certain level, thereby avoiding an increase in manufacturing costs. The object of the present invention is to provide a filling device that does not cause any problems.

This object can be achieved with the features of the device according to claim 1.
Further, other excellent facts can be understood from the description of the embodiments section.

A further advantage of these facts and embodiments is that two types of elements can be filled into the container at the same time, for example two different colored toothpastes. A further advantageous embodiment of the present invention also includes:
Even though the piston rod attached to the piston is installed inside after filling,
The piston rod allows the container to be filled without interfering with the filling process.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the first illustrated device, a filling station 1 is provided which supplies the product to be filled from a storage tank (not shown). The product flows into the actual filling tube 2 through the tubular prechamber 6 . A suction tube 4 is arranged in the vicinity of the pre-chamber 6 and is provided with a light vacuum to prevent the product from dripping at the end of the filling process. The filling tube 2 is a telescopic tube 8 that extends and retracts along a common axis.
The upper end of the telescopic tube 8 is connected to the pre-chamber 6. The telescopic tube 8 then has a piston 12 which is guided in a sealing manner with respect to the filling tube 2. The seal between the filling tube 2 and the piston 12 may be constituted by a conventional annular seal 14. The lower end of the telescopic tube 8 can protrude through an opening 20 in the annular disc 18 covering the end of the filling tube 2. In this embodiment, the telescopic tube 8 is guided in a sealed manner in an opening 20 of the annular disc 18 by means of a seal 15.

A return spring 24 is disposed between the piston 12 and the annular disk 18, and the spring force of the return spring 24 is smaller than the filling pressure of the product to be filled and is smaller than the frictional force acting on the telescopic tube 8. It's also big.

In the lower region of the filling tube 2 one or more air holes 26 are provided, which air holes 26 are located below the lower surface of the piston 12 of the telescopic tube 8. As a result, air in the chamber containing the spring 24 can enter and exit through the air hole 26 while the telescopic tube 8 is moving.

The outer surface of the annular disc 18 covering the end of the filling tube 2 is tapered in the shape of a funnel in the outlet 16 of the telescopic tube 8, as shown at 28. As a result, when filling the dispensing container with a piston rod located in the dispensing container, the piston rod can be stopped and guided within the dispensing container.
Since the piston rod then penetrates a portion of the telescopic tube, it does not interfere with the filling operation.

During the actual filling operation, the container 30 is located below the filling tube 2 and the filling tube 2 is inserted as a result of the relative movement between the container 30 and the filling tube 2.

Now, when the product to be filled is supplied under pressure, the piston 12 of the telescopic tube 8 is pressed downwards and, against the spring force of the spring 24, the telescopic tube 8 is extended to its lower position. Therefore, no air bubbles or disturbances occur while the container is being filled. By controlling the relative movement of raising the filling tube 2 out of the container 30 again,
Both sub- and constant level filling can be performed. When the filling tube 2 is almost completely withdrawn from the dispensing container 30, vacuum acts on the suction tube 4 and the filling operation is completed. At this time, the telescopic tube returns to its original position again by the return force of the spring 24.

In the embodiment shown in FIG.
communicate into one or more radial passages 32 within the piston 12' through holes extending along a common axis within the piston. The passage 32 communicates with one or more bypass passages 34 provided in the filling tube 2 only when the piston 12' is in the lower end position. These bypass passages 34
Above the piston 12', these bypass passages 34 communicate with the interior of the filling tube or are connected to the prechamber 6 while the piston is in its lower end position.

When the filling pressure is released, the piston moves upwards again and automatically prevents further product from being fed into the telescopic tube.

In the embodiment shown in Figure 3, one or more holes 40 are provided in the wall of telescopic tube 8'. At its upper end, the hole 40 is connected to the piston 1.
It communicates with an annular groove 31 in piston 12' via a radially extending bore in 2' and a radially outwardly extending passageway 32. By means of these holes in the filling tube 2, the groove 31 is connected to one or more pre-chambers 42 for different products to be filled, for example toothpaste pastes of different colors. The telescopic tube 8' is guided sealingly within the annular disc 18 by means of a seal 15. The return spring 24 is interposed between the lower surface of the piston 14 or the middle part of the filling pipe 8' and the annular disk 18, and returns to its original position when the pressure for filling the elements of the product to be filled is released. .

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the filling device of the present invention. FIG. 2 is a longitudinal sectional view of another embodiment of the filling device of the invention, FIG. 2a is a sectional view during the filling operation, and FIG.
Figure b is a sectional view at the end of the filling operation. FIG. 3 is a longitudinal sectional view of a further filling device according to the invention for filling a filling having two different elements; 1...Filling station, 2...Filling tube, 4...
... Suction tube, 6 ... Pre-chamber, 8 ... Telescopic tube, 12, 12' ... Piston, 14 ... Seal,
18... Annular disk, 20... Opening, 24... Return spring, 26... Air hole, 30... Distribution container.

Claims (1)

Claims: 1. A filling station with a filling tube, which is inserted into the distribution container by a relative movement with respect to the distribution container, and a prefix containing the product to be filled. a chamber is connected to the filling tube;
In a filling device for filling the liquid or pasty product into a dispensing container, a telescopic tube 8 extending and retracting coaxially with respect to the filling tube 2 is provided.
is attached to the filling tube 2, connecting the upper end 10 of the telescopic tube 8 to the prechamber 6, and forming a piston 12 at the upper end 10, which is guided in a sealing manner with respect to the filling tube 2; The lower end 16 of the filling tube 2 is inserted into an opening 20 of an annular disc 18 covering the end of the filling tube 2 so as to be able to protrude therefrom, a return spring 24 is interposed between the piston 12 and the annular disc 18, and the return spring 24 is interposed between the piston 12 and the annular disc 18. 2
4 is set to be smaller than the filling pressure of the product to be filled and larger than the frictional force acting on the telescopic tube 8. 2. Device according to claim 1, characterized in that the telescopic tube (8) is guided in an opening in the annular disk (18) in a sealed manner. 3. The lower region of the filling tube 2 is provided with one or more air holes 26, which air holes 26 are located below the lower surface of the piston 12 when the telescopic tube 8 is in its lower end position; An apparatus according to claim 1 or 2. 4. Claims 1 to 3, in which the protrusion 16 of the telescopic tube 8 on the outer surface of the annular disc 18 covering the filling tube is formed into a funnel shape 28.
Apparatus according to any one of the following paragraphs. 5. The pre-chamber 6 is connected to the suction tube 4;
An apparatus according to any one of claims 1 to 4. 6. Said telescopic tube 8 communicates with one or more passages 32 provided radially in the piston 12', the passages 32 being provided in the filling tube 2 only when said piston 12' is in the lower end position. 2. The device according to claim 1, wherein the bypass passage 34 communicates with the interior of the filling tube 2 or with the prechamber 6 above the piston 12'. 7. One or more holes 40 are formed in the wall of the telescopic tube 8', the upper ends of which communicate with the annular groove 31 via radially outwardly extending passages 32 in the piston 12'. and the annular groove 31 communicates via holes in the filling tube with one or more prechambers 42 for filling different types of products;
The lower end of the telescopic tube 8' is inserted into the opening 20 of the annular disc 18 and guided in a sealed manner, and the return spring is connected to the piston 12 and the annular disc 18.
Claim 1 interposed between
Apparatus described in section.