WO2013102624A1

WO2013102624A1 - Tube and emptying device

Info

Publication number: WO2013102624A1
Application number: PCT/EP2013/000018
Authority: WO
Inventors: Daniel Andrei; Laura Andrei; Serban Andrei; Helmut ATZL
Original assignee: Daniel Andrei
Priority date: 2012-01-05
Filing date: 2013-01-07
Publication date: 2013-07-11

Abstract

A tube has a cylindrical tube casing 1, a tube end wall 2, which is weakened overall and closes off one end of the tube casing, and a dispensing stub 3, which is arranged in the tube end wall. Part of the tube end wall 2 has arranged in it an end-wall mask 4, which has a dome-like portion 7, of complementary shape to the tube end wall 2, and a cylindrical portion 5, on which the dispensing stub 3 is fastened. A further tube has, at its front end 38, a dispensing nozzle 42, whereas the rear end of said further tube is closed by being compressed. The end 38 is constructed from two hemispherical domes 39, 40 and the tube casing 35 is constructed from two cylinder segments 36, 37, wherein the height of the hemispherical domes 39, 40 and of the cylinder segments 36, 37 is smaller than the sphere radius and cylinder radius, respectively.

Description

Tube and emptying device

State of the art

WO 2010/149381 discloses a tube with a weakened tube end, in which an almost complete evacuation is made possible by collapsing the upper end half onto the complementarily shaped lower half of the half. The implementation of this geometry for the production of aluminum tubes poses several problems:

a tube end with different wall thicknesses is difficult to realize because of the flow properties of the extruded metal;

the manufacturing costs of the required complex extrusion tools are high;

the production clock must be set low;

a directional printing of the tube sheath is required, e.g. the trademark must be printed on the side of the weakened top of the tube end.

A directional printing of aluminum tubes is with the current ones

Technologies are not possible, and retrofitting existing tube production facilities would be very costly and time consuming. In addition, the dispensing nozzle of the tube can not be deformed. As a result, the residual emptying capability depends on the diameter of the dispensing nozzle, so that the emptying of the residue becomes less and less efficient as the diameter increases.

An aluminum tube with a weakened tube end could be realized with current technologies, but has the following disadvantages:

the soft face can be easily damaged during transport and handling;

- the weakened tubes look identical to tubes without weakening and thus have no recognition features;

the perfect axial symmetry provides no indication of a more accurate "emptying" instruction.

DE 10 2009 029 995 A1 discloses a tube which has a dispensing nozzle at its front end and whose rear end is closed by compression, and a device for emptying such a tube. This known tube has a circular cylindrical tube jacket and a hemispherical tube end. The emptying device comprises a tubular housing for receiving the tube and a displaceable in the housing ball-shaped Auspresskörper with guided in axial slots of the housing journal. During the emptying process, the squeezing body seeks to fold the upper half of the tube into the lower half of the tube, although the tube fold arising in the meridian plane hampers the mobility of the axial journals running in the same plane. In the area of the tube end, this means that a complete emptying of the tube is not possible.

If you make the diameter of the tube smaller than that of the spherical Auspresskörpers and the tubular housing, the tube end has no complementary to the end wall portion of the housing form, which in turn precludes a complete emptying.

In the known geometry, a relatively steep flank of the upper half of the wall, which is pressed against the lower tube wall half, is created in front of the expressing body. This means that the Auspresskörper must be pressed with a correspondingly large force against the resistance of the tube wall. With a motor-driven ejector body, a correspondingly dimensioned motor is therefore required.

Outline of the invention

The invention has the general object to eliminate or reduce disadvantages, as they occur in tubes according to the prior art. A more specific object may be seen to realize an aluminum tube whose tube end has a soft and collapsible half and a rigid half.

The solution to this problem is specified in claim 1. The invention makes it possible to produce completely emptied tubes with conventional technologies also made of aluminum. However, the invention is also applicable to laminate and plastic tubes.

Another object of the present invention is to provide a tube that can be emptied as completely as possible with the least possible effort.

A tube which achieves this object and a corresponding emptying device are specified in claims 15 and 19.

Brief description of the drawings

The invention is explained below with reference to the drawings. Show: Figures 1 to 6 are views of a front wall mask, mounted on a tube end, whose existing aluminum dispensing nozzle with a thread from the mask protrudes.

7 to 12 are views of a front wall mask with its own threaded section;

13 to 15 are views of a front wall mask with a widened round threaded portion.

16 to 17 are views of a front wall mask with tapered dispensing nozzle;

18 to 19 are views of an end wall mask with a broadly shaped, radially offset Ausbringstutzen.

20 to 22 are views of a tube mask with a widened, round threaded portion and a reinforcing arc.

23 to 24 are views of a spherical cap-shaped end wall mask with a broadly shaped, axially placed dispensing nozzle.

25 and 26 are a perspective view and a cross section of a tube with a generally lancet-shaped profile.

FIG. 27 shows a longitudinal section through an emptying device for the tube according to FIG. 25; FIG.

FIG. 28 is a schematic illustration of the emptying device; FIG.

29 shows a longitudinal section through the front part of a tube with lancet-shaped profile and with respect to the tube axis radially offset dispensing nozzle.

30 and 31 are a perspective view and an end view of a tube with a generally lancet-shaped, but widened profile.

FIG. 32 is a perspective view of the front parts of a tube with an adapter attached to the end wall mask; FIG.

FIGS. 32 and 33 show a perspective illustration and an end view of an end wall mask according to further variants.

Detailed description of embodiments

The invention provides for the use of an "end wall mask" 4, which is attached to an overall weakened tube end 2.

The front wall covers the following parts ::

a flat dome-shaped portion 7, whose inner surface is designed to be complementary to the outer surface of the tube end 2, wherein the radial edge contour of the portion 7 corresponds approximately to the contour of the tube end wall or the tube shell 1 and which may be circular, oval, lancet-shaped, etc. and where the portion 7 is dome-shaped and at most as large as the "lower" half of the tube end 2, so that their "upper" surface remains uncovered.

a cylindrical portion 5, wherein dimensional tolerances of the inner diameter are designed so that the Ausbringstutzen 3 after assembly by pressing neither rotate nor can slide axially, the attachment can also be done by means of adhesive or thermally;

an end portion 8, which may have various shapes and dimensions, namely:

short (Figs. 1 to 6), wherein the aluminum thread (or bayonet, etc.) of the Ausbringstutzens 3 protrudes from the cylindrical portion 5 of the mask;

long (Figures 7 to 12), wherein the threadless and thin-walled Ausbringstutzen 31 sheathed and the outer diameter of the cylindrical portion 5 of the mask with a thread, bayonet, etc. is provided for attaching a cap 10;

18 with a section 5 of cylindrical cross-section, a transition piece 11 and an end portion 8, which may have different cross-sections, wherein the end portion 8 with respect to the axis of the dispensing nozzle 28 coaxial (as in Fig. 23 and 7 to 15) or radially can be offset (FIGS. 18 and 19).

The end wall mask 4 may be a separately manufactured plastic part, which is pressed onto the tube end 2 or the Ausbringstutzen 3 with pressure or attached by means of a self-adhesive. Alternatively, the front wall mask 4 may consist of a thick lacquer layer applied to the tube end 2, which can be produced in the same operation with the aid of a template. Preferably, a very fast curing adhesive is used in order not to deteriorate the cycle of tube production.

Furthermore, the end wall mask 4 can be decorated with 3D reliefs, for example in the form of Mickeymouse, Comic or other figures or Basoreliefs.

The end wall mask 4 can be attached both to tubes with axially placed Ausbringstutzen 3 and (not shown here) tubes with respect to the tube axis radially offset Ausbringstutzen.

In Fig. 1 to 5, a tube with a front wall mask 4 in front, side, plan view, cross-section and perspective view is shown. In Fig. 6, the end wall mask 4 is shown separately. The end wall mask of Fig. 1 to 6 has a narrow cylindrical portion 5, from which the Ausbringstutzen 3 of the tube protrudes. The difference between the design according to FIGS. 7 to 12 and that according to FIGS. 1 to 6 lies in the fact that the cylindrical section 5 according to FIGS. 7 to 12 is extended with a wider threaded or coupling part 6 which accommodates the (threadless) dispensing nozzle 31 surrounds.

In Fig. 13 to 15, an end wall mask 4 is shown, whose end portion

8 has a threaded part 6 and an enlarged diameter.

FIGS. 16 and 17 show an end wall mask 4 with a tapered end section 8.

In Fig. 18 and 19, an end wall mask 4 is shown, the end portion 8 is wider and radially offset relative to the axis of symmetry of the Ausbringstutzens 3.

In Fig. 20 to 22, an end wall mask 4 is shown, which has a tearable reinforcing arc 12. The connection between the reinforcement bow 12 and the dome-shaped section 7 is weakened so that the reinforcement bow 12 can be torn off if necessary.

Fig. 23 to 24 show an end wall mask 4 with kugelkalottenförmigem profile and with respect to the tube axis radially offset, widening section.

The tube described here can be produced with known technologies as follows:

it is made of a preferably existing aluminum tube with a total weakened tube end;

the diameter of the Ausbringstutzens 3 is preferably made as small as possible and the wall thickness as thin as possible. For the variant according to Figures 1 to 6 of the Ausbringstutzen 3 is rolled with the threaded portion 6 or provided with a locking coupling;

the tube is painted using conventional technology and printed without regard to the orientation of the printed graphics;

At the end of the tube, by pressing against the dispensing nozzle 3 according to the so-called "flip-flop" technique, the above-described face mask is fastened congruently to the complementary-shaped tube end. Attention is paid to the direction of the face mask, so that the forehead mask, the "lower" part of the tube end reinforced and "top", an uncovered, collapsible surface remains.

- The directed contact pressure can be realized with a precision of approx. ± 5 °; the cap 10 is screwed. If the tube is designed according to FIGS. 1 to 6, the aluminum thread is realized by rolling, wherein the initial position of the thread spiral is not controllable.

If, according to FIGS. 7 to 12, a threaded part 6 is placed on the face mask, this can be realized by injection molding technology, wherein the beginning and length of the thread spiral can be provided very accurately and in repeatable quality.

The internal thread of the closure is usually defined precisely.

When screwing the closure on the thread of the face mask, the two parts are always screwed in the same position to each other, so that the closure against the tube printing is always "directed". This feature can be exploited for creating asymmetric closure designs.

To prevent deformation and destruction of the tube during transport or e.g. When deployed in installation cartons, the end masks may be provided with the reinforcement sheet 12 (Figures 20 and 21). The connection between the reinforcing sheet 12 and the dome-shaped end wall mask 4 is provided with cracks, so that the reinforcing sheet 12 can be removed by bending and tearing when required. Instead of the bow shape, the reinforcement may also have a different geometry.

The tube shown in FIGS. 25 and 26 has a tube jacket 35 constructed from two cylinder segments 36, 37 and a front end 38 formed from two hemispherical caps 39, 40. A coaxial dispensing nozzle 42 is attached to the two hemispherical caps 39, 40. The rear tube end (not shown) is normally closed by compression. The height a of the Halbkugelkalotten 39, 40 and the cylinder segments 36, 37 is smaller than the radius of the spherical surface of the dome 39, 40, which coincides with the radius of the cylinder segments 36, 37. This results in the lancet-shaped profile, which can be seen in particular from FIG. 26. In Fig. 29, the dispensing nozzle 42 is arranged radially offset only on a hemispherical cap 40 and thus relative to the tube axis.

In FIG. 27, the tube according to FIGS. 25 and 26 is shown inserted into an emptying device 45, which has a tubular housing 46 accommodating the tube and a spherical expressing body 47. The diameter of the Auspresskörpers 47 is slightly smaller than the cylinder segments 36, 37 and the calotte 39, 40 determining radius of the tube. The Auspresskörper 47 protrudes through an upper longitudinal slot through out of the housing 46 and has two guided in axial slots of the housing 46 journals 48. Incidentally, speaks the emptying device 45 of the device according to DE 10 2009 029 995 A1, which is incorporated herein by reference. The difference between the height a of Halbkugelkalotten 39, 40 and the cylinder segments 36, 37 and the Kugelbzw. Cylinder radius is at least equal to the diameter of the axle 48 plus the wall thickness of the tube shell 35th

As can be seen from the schematic representation of FIG. 28, the tube can be completely emptied into the stimulus area with the spherical ejection body 47 thus dimensioned, wherein the axle stubs 48 are located above the fold edge 49 of the two cylinder segments 36, 37 of the tube. benmantels 35 move.

In Fig. 30 and 31, a variant of the tube is shown, the forehead is formed here of four quarter-spherical caps 50 and cylindrical wall parts 51 inserted therebetween. In this case, it is expedient to attach the dispensing nozzle 42 completely to only one of the two hemispherical caps 39, 40, in particular to one of the cylindrical wall parts 51 of an end half. This radially offset relative to the tube axis positioning of the dispensing nozzle 42 has the advantage that it is outside the end zone, which is deformed (folded) at the end of the emptying process, and therefore does not affect the complete emptying.

According to FIG. 32, an adapter 13 with a predetermined output profile is plugged or screwed onto the threaded or coupling part 6 of the end wall mask 4. In the flat output profile shown in the figure, it may be appropriate to rotate the adapter 13 relative to the end wall mask 4 so that it assumes a favorable orientation for the application.

In the embodiment of the end wall mask 14 according to FIGS. 33 and 34, the reinforcing element 12 formed as a thin sheet in FIG. 20 is designed as a flat part, which is connected with the dome-shaped section 7 of the end wall mask along fracture or tear lines 15. These breaking or tear-off lines 15 can run in a collinear manner or at an angle to one another and can be connected to one another in the region of the dispensing nozzle 3 via a crescent-shaped cutout 16. When the tube is almost empty, the reinforcing element 12 can be broken off by pressure in the region of the arrow so that it does not hinder the folding of the tube end which is important for the complete emptying of the tube. tube jacket

tube end

Dispensing nozzle with thread

Bulkhead mask

Cylindrical section of the forehead mask

Threaded or coupling part

Dome-shaped section of the front wall mask

End section (can be different than circular)

Upper part of the print

cap

Transition piece of the mask

Reinforcement arch / tear-off reinforcing element adapter

Break or tear lines

crescent-shaped neckline

tube

casing

Auspresskörper

longitudinal slot

Wangen

End wall of the housing

elastic insert

base

dispensing nozzle

Dispensing nozzle without thread

Weakening dispensing nozzle

tube jacket

cylinder segments

front end

Halbkugelkalotten

dispensing nozzle

emptying

casing

Auspresskörper

journal

fold

Viertelkugelkalotten

cylindrical wall parts

Claims

A tube having a cylindrical tube jacket (1), one end of which has an end, a generally weakened tube end (2) and a dispensing nozzle (3) arranged therein,

characterized by an end wall mask (4) arranged on a part of the tube end face (2), which has a dome-shaped section (7) shaped complementarily to the tube end (2) and a cylindrical section (5) to which the dispensing connection piece (3) is attached, having. 2. Tube according to claim 1, wherein the cylindrical portion (5) of the end wall mask (4) is so short that the Ausbringstutzen (3) is only partially surrounded and protrudes, so that a closure directly to a thread or a coupling of Ausbringstutzens (3) can be fastened. 3. A tube according to claim 1, wherein the cylindrical portion (5) of the end wall mask (4) is provided with a threaded or coupling part (6) and the dispensing nozzle (28) of the tube (1) is complete is surrounded. (FIGS. 7 to 12)

4. Tube according to one of claims 1 and 3, wherein on the cylindrical portion (5) of the end wall mask (4) attaches a transition piece (11) whose end portion (8) has a predetermined cross-sectional shape. (Figs. 13 to 17 and 20 to 24)

5. Tube according to claim 4, wherein the Ausbringstutzen (3) of the end wall mask (4) relative to the axis of symmetry of the tube (20) is radially offset

6. Tube according to one of claims 3 to 5, wherein the Ausbringstutzen (3) is provided with a thin membrane as protection against Erstöffnung.

7. Tube according to one of the preceding claims, wherein on the coupling part (6) of the end wall mask (4) a removable adapter (13) is mounted with a predetermined output profile.

8. Tube according to one of the preceding claims, wherein the tube end (2) has a kugelkalottenförmiges profile. (Figures 23 and 24)

9. A device for emptying the tube (20) according to any one of the preceding claims, characterized by a trough-like or cylindrical housing (21) for receiving the tube (20) and in the housing (21) manually or by motor sliding Auspresskörper (22 ).

10. Apparatus according to claim 9 having a in the housing (21) arranged elastic insert (26) for receiving the tube (20).

11. Device according to one of claims 9 to 10 with a dispensing nozzle (28) for receiving the Ausbringstutzens (3) of the tube (20).

12. The apparatus of claim 11, wherein the dispensing nozzle (28) has a thread or a coupling for attachment to the Ausbringstutzen (3) of the tube (20).

13. Device according to one of claims 9 to 12, wherein the housing (21) has a flat magnetic base (27).

14. A tube according to any one of claims I and 3 to 8, wherein the cross section of the dispensing nozzle (28) has an asymmetrical shape.

15. Tube, which at its front end (38) has a dispensing nozzle (42) and whose rear end is closed by compression,

characterized in that the front end (38) of two Halbkugelkalot- th (39, 40) and the tube shell (35) of two cylinder segments (36, 37) is constructed, the height of the Halbkugelkalotten (39, 40) and the Cylinder segments (36, 37) is smaller than the spherical or cylindrical radius.

16. A tube according to claim 15, wherein each of the two Halbkugelkalotten (39, 40) of two Viertelkugelkalotten (50) and inserted therebetween cylindrical wall parts (51) is constructed.

17. Tube according to claim 15 or 16, wherein the dispensing nozzle (42) completely on only one of the two Halbkugelkalotten (39, 40) attaches.

18. Tube according to claim 17, as far as this is dependent on claim 16, wherein the dispensing nozzle (42) attaches completely to one of the cylindrical wall parts (51) of a front half.

19. A combination of a tube according to any one of claims 15 to 18 and a device for emptying this tube with a tubular housing (46) for receiving the tube and a in the housing (46) displaceable Auspresskörper (47) with in axial slots of the housing ( 46) guided axle stubs (48),

characterized in that the difference between the height of the hemispherical calottes (39, 40) and the cylinder segments (36, 37) and the ball or cylinder radius at least equal to the diameter of the journal (48) plus the wall thickness of the tube shell (35) is.

20. A combination according to claim 19, wherein the housing (46) is surrounded by a rotatable sleeve with internal threads, in which engage the axle journal (48).

21. A combination according to claim 20 with a motor for driving the sleeve.