FILLING APPARATUS FOR A TABLETING MACHINE

Abstract

The invention relates to a filling device for a tabletting machine comprising a covering device and a cone, wherein a gap is formed between the covering device and the cone, said gap being adapted to guide tabletting material from a filling tube of the filling device into a region of die openings of a die table.

Claims

1. Filling device (10) for a tabletting machine (18) comprising a covering device (16) and a cone (14), wherein a gap (24) is formed between the covering device (16) and the cone (14), said gap (24) being designed to guide tabletting material from a filling tube (12) of the filling device (10) into a region of die openings (28) of a die table (26), characterised in that the covering device (16) is rotatably formed and the filling device (10) comprises a drive unit (20) for generating the rotational movement of the covering device (16).

2. Filling device according to claim 1 characterised in that the cone (14) comprises a cone tip (32) and the filling tube (12) of a material feed is arranged centrally above the cone tip (32) and/or the filling tube (12) is arranged centrally with respect to an inlet opening of the covering device (16).

3. Filling device (10) according to claim 1 characterized in that the drive unit (20) is arranged above the covering device (16).

4. Filling device (10) according to claim 1 characterized in that the drive unit (20) is formed by a gear drive and/or a belt drive.

5. Filling device (10) according to claim 1 characterized in that the drive unit (20) is arranged below the filling device (10).

6. Filling device (10) according to claim 5 characterised in that the filling device (10) comprises a drive shaft (36) adapted to transmit rotational movement of the drive unit (20) to the covering device (16).

7. Filling device (10) according to claim 6 characterized in that the covering device (16) and the drive shaft (36) are connected to each other by coupling means (22).

8. Filling device (10) according to claim 1 one or more of the previous characterized in that the filling device (10) comprises a bearing housing (38) for mounting the covering device (16).

9. Filling device (10) according to claim 1 characterised in that the cone (14) is formed in at least two parts and comprises at least one truncated cone (34) and one cone tip (32).

10. Filling device (10) according to claim 9 characterized in that the cone tip (32) is rotatably formed.

11. Filling device (10) according to claim 8 characterised in that the cone tip (32) is connected to the drive shaft (36) and rotates in the same direction as the covering device (16).

12. Filling device (10) according to claim 1 characterized in that the cone (14) comprises different portions, the different portions having different cross-sections and/or pitch angles.

13. Filling device (10) according to claim 1 characterized in that the filling device (10) has no impeller and/or agitator blade.

14. Filling device (10) according to claim 1 characterized in that a non-rotating adapter is disposed between filling tube (12) and covering device (16).

15. Filling device (10) according to claim 1 characterized in that the filling device (10) comprises sealing means, said sealing means being adapted to prevent tabletting material from emerging in the region of the die openings (28) of the die table (26) and/or in a transition region between the covering device (16) and the filling tube adapter.

Description

[0026] The invention is described in more detail using the following figures; it shows:

[0027] FIG. 1 A preferred design of the filling device with a drive located above the filling device.

[0028] FIGS. 2 to 4 The preferred design of a filling device with a drive located below the filling device.

[0029] FIG. 1 shows a filling tube (12) for a filling device (10), the filling device (10) comprising a cone (14) and a lid (16). The tabletting machine (18) comprises drive means (20) which transmit the rotary movement of the drive means (20) to the lid (16), for example by means of a bridge. In the sense of the invention, the bridge can preferably be referred to as coupling means (22) or coupling (not shown). The drive means (20) can, for example, be realized by a belt drive or a gear drive. In the example of the invention shown in FIG. 1, the cone (14) is made in one piece, whereby this cone (14) preferably does not rotate. The side walls of the funnel-shaped lid (16) are preferably designed to correspond to the outer surfaces of the cone (14) or the cone components, whereby the term correspond in the sense of the invention preferably means that the side walls of the lid (16) and the outer surfaces of the cone (14) run completely or in places parallel to one another. It is preferred that the area between the side walls of the lid (16) and the outer surfaces of the cone (14) is referred to as the gap or flow channel section (24) through which the powder material passes to the die table (26). There the powder material is pressed into pellet in the die bores and/or openings (28). The hopper (16) rotates preferably within a base plate (30) of the filling device (10).

[0030] FIGS. 2 to 4 show preferred versions of the invention with a drive (20) arranged below the filling device (10). In the design example shown in FIG. 2, the cone (14) is designed in two parts, with the cone tip (32) being able to rotate and the truncated cone (34) being non-rotating. For example, the cone tip (32) may be internally connected to the drive shaft (36), causing the cone tip (32) to rotate. The cone tip (32) is further connected to the coupling means (22, not shown) with the hopper (16), whereby the rotation of the drive shaft (36) is transmitted to the hopper (16). In other words, in the sense of the invention, it is preferred that the coupling means (22) are arranged to transmit the rotational movement of the drive shaft (36) to the covering device (16).

[0031] FIGS. 2 to 4 also show the die plate (26) and the openings (28) in which the powder material is filled. The drive shaft (36) can, for example, be mounted (38) and provided with seals, whereby seals can, for example, also be provided in the region of the transition between the rotating funnel (16) and filling tube (12). This transition can be realized, for example, with a filling tube adapter. Guiding means (40) inside the filling device (10) facilitate the conveying of the tabletting material inside the filling device (10).

REFERENCE CHARACTER LIST

[0032] 10 filling device [0033] 12 filling tube [0034] 14 cone [0035] 16 lid or covering device [0036] 18 tabletting machine [0037] 20 drive means or drive unit [0038] 22 coupling means [0039] 22 gap or flow channel section [0040] 24 die table [0041] 20 [0042] 26 die bores and openings [0043] 28 base plate [0044] 32 cone tip [0045] 34 truncated cone [0046] 36 drive shaft [0047] 38 bearings [0048] 40 guiding means