阅读说明：本技术 焊接单元 (Welding unit ) 是由 克里斯汀·弗雷 雷莫·朱得 马塞尔·基尔加 于 2020-04-09 设计创作，主要内容包括：提出了一种特别是用于无水马桶的用来热焊接薄膜软管的焊接单元(1),其中,包括至少两个可相对于彼此运动的用于热焊接薄膜软管的焊接机构(2、2a),其中,每个焊接机构(2、2a)都设计成可通过至少一个铰接装置(3、3a)运动,其中,所述至少一个铰接装置(3、3a)包括至少一个铰接杆(4、4a-4e)。(A welding unit (1) for the thermal welding of foil hoses, in particular for waterless toilets, is proposed, wherein at least two welding means (2, 2a) for the thermal welding of foil hoses, which are movable relative to each other, are comprised, wherein each welding means (2, 2a) is designed to be movable by means of at least one hinge device (3, 3a), wherein the at least one hinge device (3, 3a) comprises at least one hinge rod (4, 4a-4 e).)

1. Welding unit (1, 1a) for the thermal welding of foil hoses, in particular for waterless toilets, wherein at least two welding means (2, 2a) for the thermal welding of foil hoses, which are movable relative to each other, are comprised, characterized in that each welding means (2, 2a) is designed to be movable by means of at least one hinge (3, 3a), wherein the at least one hinge (3, 3a) comprises at least one hinge rod (4, 4a-4 e).

2. Welding unit (1, 1a) according to claim 1, wherein each articulation (3, 3a) comprises at least one electric drive (5, 5a) for the movement.

3. Welding unit (1, 1a) according to claim 2, wherein the articulation means (3, 3a) are operatively connected to the electric drive (5, 5a) by means of at least one gear (6, 6a-6f), respectively.

4. Welding unit (1, 1a) according to any of the preceding claims, wherein for guiding the welding means (2, 2a) at least one guiding means (7, 7a) is comprised, preferably comprising at least one chute (8, 8 a).

5. Welding unit (1, 1a) according to one of the preceding claims, wherein there are two hinge arrangements (3, 3a) arranged mirror-symmetrically to each other, wherein each hinge arrangement (3, 3a) comprises at least two, preferably three hinge rods (4, 4a-4e), wherein the hinge rods (4, 4a-4e) of each hinge arrangement (3, 3a) are arranged on one common shaft (9, 9a), respectively.

6. Welding unit (1, 1a) according to one of claims 1 to 5, comprising a conveying device (10) for conveying foil hoses to be welded and/or welded, which conveying device is arranged at least partially in the course of the foil hoses above the welding means (2, 2a) or below the welding means (2, 2a) or on both sides (above and below) of the welding means (2, 2 a).

7. Welding unit (1, 1a) according to claim 6, wherein preferably the articulation means, in particular the hinge rod, is such that the transport means moves dislocation, preferably follows the welding means and/or moves apart from the welding means.

8. Welding unit (1, 1a) according to claim 7, wherein the conveying device (10) is designed in two parts and comprises a first conveying mechanism (11) and a second conveying mechanism (12), wherein the first conveying mechanism (11) comprises at least one roller part (13-13c) and the second conveying mechanism (12) comprises at least one roller part (13d-13g), wherein the first conveying mechanism (11) and the second conveying mechanism (12) are movable relative to each other for conveying the foil hose by means of at least one electric drive (5, 5a), preferably by means of two electric drives.

9. Welding unit (1, 1a) according to any one of claims 6 to 8, wherein the transport means (11, 12) each comprise a plurality of, preferably between two and six, mutually spaced roller parts (13-13 g).

10. Welding unit (1, 1a) according to claim 8, wherein the first and second conveyor mechanisms (11, 12) are each operatively connected to a respective one of the electric drives (5, 5a) by means of at least one gear (20, 20a), wherein the respective one of the electric drives (5, 5a) is preferably operatively connected to a respective one of the articulated arrangements (3, 3 a).

11. Welding unit (1, 1a) according to any one of claims 6 to 10, wherein each conveying means (11, 12) comprises at least one bent retaining means (14, 14a), wherein the bent retaining means (14, 14a) of the conveying means (11, 12) are arranged mirror-symmetrically to each other.

12. Welding unit (1, 1a) according to claim 5 and claim 11, wherein the first and second conveyor mechanisms (11, 12) are movably arranged along the guide mechanism (7, 7a), respectively, wherein the guide mechanism (7, 7a) is substantially dumbbell-shaped in configuration and has a greater height (17, 17a) at its respective end portion (15, 15a, 15b, 15c) than the intermediate portion (16, 16 a).

13. Welding unit (1, 1a) according to one of the preceding claims, wherein at least one spring means (24, 24a, 24b, 24c) is comprised, which is operatively connected to at least one welding means (2, 2a) for generating a pressing force on the foil hose during the welding process, preferably wherein at least one spring means (24, 24a, 24b, 24c) is designed as an extension spring or a compression spring.

14. Welding unit (1, 1a) according to one of the preceding claims, wherein at least two spring means (24, 24a, 24b, 24c) are comprised, wherein each welding means (2, 2a) is operatively connected to at least one of the at least two spring means (24, 24a, 24b, 24c) for generating a pressing force on the foil hose during the welding process, wherein the at least two spring means are designed as spring means of the same or different type.

15. Welding unit (1, 1a) according to one of the preceding claims, wherein the articulation means (3, 3a) and the mechanism for moving the articulation means (3, 3a) and preferably the guiding mechanism (7, 7a) are mutually matched such that the articulation means (3, 3a) can only be extended up to an angle of 189 °, in particular to prevent exceeding a dead point of the articulation means (3, 3 a).

Technical Field

The present invention relates to a welding unit for heat welding foil hoses, in particular for waterless toilets, according to the preamble of claim 1 and to a waterless toilet according to claim 12.

Background

Waterless toilets and welding units for welding corresponding foil hoses are known from the prior art. A system is known from CH 581462 a5, in which a hose store is assigned a pair of spreading fingers, by means of which the hose drawn out of the store is guided.

The disadvantage here is, in particular, that the known welding units have a linear (linear) course of the welding means, so that the welding jaws can only be closed very slowly. Therefore, the welding of the thin film hose filled with excrement of the waterless toilet is slowly performed. Furthermore, after welding, the film is difficult to release from the welding strip and, in the worst case, may be welded together with the subsequent bag.

Disclosure of Invention

The object of the invention is to provide a welding unit, in particular for waterless toilets, by means of which welding of foil hoses can be carried out in a reliable and smooth manner.

The invention is based on a welding unit for the thermal welding of foil hoses, in particular for waterless toilets, wherein at least two relatively movable welding means for the thermal welding of foil hoses are included.

In order to achieve this object, it is proposed, in accordance with the invention, that each welding means is designed to be movable by means of at least one articulation, wherein the at least one articulation comprises at least one articulation lever.

Such a non-linear movement of the welding means enables a faster movement of the welding means and thus a faster welding of the foil hose. Since the welding means are arranged on the hinge lever, the shortening of the distance can also be understood as a faster movement.

The articulated links, in particular in the form of toggle links, have the following properties: as the extension of the lever joint increases, these can perform a smooth movement with controlled end positions until the articulated lever is clamped at an angle of 180 ° and reaches a so-called stop point.

In an advantageous embodiment of the invention, it can be provided that each joint comprises at least one electric drive for moving the welding means.

Direct control and automation of the movement of the welding means can thereby be achieved by a simple construction. The electric motor can be arranged as a direct drive, in particular a synchronous direct drive, or additionally via a transmission and a transmission in order to obtain the power required for the movement.

In a further advantageous embodiment of the invention, it can be provided that the articulation is in each case operatively connected to the electric drive via at least one gear wheel.

This provides an effective force transmission to the welding device via the articulated mast, which makes it possible in particular to reliably weld the foil hose. Furthermore, the gear wheel allows a direct realization of the up-or down-speed of the drive output shaft, and furthermore, the engagement by the drive train allows a compact construction.

In order to be able to achieve a further improvement of the welding result by means of a targeted welding device, it can be provided in a further very advantageous embodiment of the invention that at least one guide device, preferably comprising at least one runner, is included for guiding the welding device.

The sliding groove guides the moving component precisely, in particular laterally, and can absorb possible forces which might otherwise act as transverse forces on the hinge device. This improves the process reliability and stability of the device.

Particularly good welding results can also be achieved by the inventive improvement in that two hinge arrangements are present, which are arranged mirror-symmetrically to one another, wherein each hinge arrangement comprises at least two, preferably three, hinge rods, wherein the hinge rods of each hinge arrangement are each arranged on a common axis.

The symmetry of the device allows the welding process to be carried out reliably in the central region of the device, which in particular also reduces the distance to be covered by the welding means and thus increases the speed of the process.

In order to be able to transport the foil hose efficiently, provision can be made in a further embodiment of the invention for a transport device to be included for transporting the foil hose to be welded and/or welded.

The conveying device is preferably arranged at least partially in the course of the foil hose above or below the welding device or on both sides (above and below) of the welding device.

In particular, the arrangement of the conveying device below the foil hose, or at least the arrangement of the conveying means below the foil hose, provides the following advantages: after the welding process has ended, the welding tongs can be retracted and the transport mechanism holds the foil hose in place above and/or below the welding tongs. In this way sticking to the welding means is prevented, since the film is peeled off from these welding means.

Furthermore, it is provided for this purpose that the articulated device, in particular the articulated lever, moves the conveying device in a dislocated manner (versetzt), preferably following and/or leaving the welding device.

In order to further improve the transport of the foil hose, it can be provided in a further advantageous embodiment of the invention that the transport device is designed in two parts and comprises a first transport means and a second transport means, wherein the first transport means comprises at least one roller element and wherein the second transport means comprises at least one roller element, wherein the first transport means and the second transport means can be moved relative to one another by at least one electric drive, preferably by two electric drives, for transporting the foil hose.

The separate conveying devices allow a uniform clamping of the foil hoses to one another and improve the conveying in terms of speed, guidance and reliability, for example in terms of kinks and overlapping layers.

The transport of the foil hose can be further improved by: the transport means each comprise a plurality of preferably in each case between two and six roller parts spaced apart from one another.

These roller elements provide sufficient surface adhesion to the foil hose and allow the system of foil hose being transported to form free, loose areas between the roller elements, which improves the process reliability during transport.

In one embodiment of the invention, the first transport device and the second transport device are each operatively connected to each electric drive by means of at least one gear wheel, wherein each electric drive is preferably operatively connected to each joint. This makes it possible to provide an effective power transmission to the conveying device, as a result of which a reliable conveyance of the foil hose can be achieved.

In an advantageous embodiment, the invention can also provide that each conveying means comprises at least one angled retaining means, wherein the angled retaining means of the conveying means are arranged mirror-symmetrically to each other. A larger space can thereby be obtained between the two conveying means. This can advantageously influence the receiving capacity of the foil hose for excrement, which in turn also enables an improved user-friendliness to the user.

In an advantageous embodiment of the invention, it can furthermore be provided that the first and second conveying means are each arranged movably along a guide means, wherein the guide means are of substantially dumbbell-shaped design and have a greater height at their respective end sections than at the central section.

This allows each conveyor unit to be moved out of the way to some extent, so that an enlarged space can be obtained between the two conveyor devices. This can advantageously influence the receiving capacity of the foil hose for excrement, which in turn also enables an improved user-friendliness to the user.

In a refinement of the invention, it can be provided that at least one spring means is included, which is operatively connected to the at least one welding means for generating a pressing force on the foil hose.

By using a spring mechanism, it is possible to achieve and/or support the pressing force acting on the foil hose during the welding process not by the hinge lever itself, but by the spring action. This eliminates the need, for example, for overstretching the articulated arm, in particular beyond a dead point, or for applying and maintaining a contact pressure by means of the drive. This sometimes saves cost when dimensioning the drive.

The contact pressure exerted by the welding means on the foil hose, which contact pressure is also increased by the spring action, can be significantly improved.

The welding result can be further improved by including at least two spring means, wherein each welding means is in operative connection with at least one of the at least two spring means, wherein the at least two spring means are designed as identical or different spring means. In this way, the symmetry of the force action can be improved.

In addition, it is advantageous for the welding result to be improved if the at least one spring means is designed as an extension spring or a compression spring. The invention also relates to a waterless toilet comprising a welding unit for closing a foil hose, wherein the welding unit is designed according to any one of claims 1-11.

Such toilets are characterized in particular by a rapid and reliable welding of the foil hose filled with waste.

Also claimed is a waterless toilet having a welded unit for closing the foil hose, wherein the welded unit is designed according to any of the preceding claims, in particular according to one of the above embodiments.

Drawings

The invention is explained in more detail below with reference to the drawings. Here:

FIG. 1 is a greatly simplified schematic illustration of a portion of a welding unit according to the present invention;

FIG. 2 is a greatly simplified schematic illustration of a modification of the welding unit shown in FIG. 1;

FIG. 3 shows the welding unit shown in FIG. 2 in another position;

FIG. 4a is a greatly simplified schematic side view of a welding unit according to the invention in a first position;

fig. 4b is a greatly simplified schematic side view of a welding unit according to the invention in a second position.

Fig. 4c is a greatly simplified schematic side view of a welding unit according to the invention in a third position.

Fig. 4d is a greatly simplified schematic side view of a welding unit according to the invention in a fourth position.

Detailed Description

A greatly simplified schematic view of a part of a welding unit 1 according to the invention is shown in fig. 1. For better understanding, front side 18 remains open in this figure. According to fig. 2, a guide mechanism 7a is preferably provided.

The welding unit 1 is shown in fig. 1 in a position that can be understood as a rest position.

The sequence during welding of the foil hose can be seen in more detail in fig. 4a to 4 d.

The welding unit 1 according to fig. 1 is provided for the thermal welding of a foil hose, in particular for a waterless toilet (not shown), wherein two relatively movable welding means 2, 2a for the thermal welding of the foil hose are included.

Each welding means 2, 2a is designed to be movable by means of a hinge 3, 3a, wherein at least one hinge 3, 3a comprises at least one hinge rod 4, 4a-4 e.

In the present case, each articulation 3, 3a comprises a plurality of, respectively three, articulation levers 4, 4a-4 e.

For the movement, each articulation 3, 3a comprises an electric drive 5, 5a (see fig. 2 and 3).

Alternatively, the welding unit 1 may comprise a frame 19. For clarity, such a frame is not shown in FIG. 2; but may still be included accordingly.

In the design of the welding unit 1a according to fig. 2, a conveying device 10 is also included, wherein the conveying device is provided for conveying not-shown foil hoses to be welded and/or already welded.

The conveying mechanism 10 according to the embodiment (fig. 2) is designed in two parts and comprises a first conveying mechanism 11 and a second conveying mechanism 12. Here, the first conveying mechanism 11 includes roller members 13 to 13c, and the second conveying mechanism 12 includes roller members 13d to 13 g. The first conveying means 11 and the second conveying means 12 can be moved relative to one another by means of the respective electric drive 5, 5a, i.e. by means of the two electric drives, for conveying the foil hoses, which are not shown in detail. This relative movement can also be seen in fig. 3, which shows the conveying means 11, 12 in what can be said to be a closed state.

In the design of the welding unit 1a according to fig. 2 or according to fig. 3, the conveying means 11, 12 each comprise a plurality of roller parts 13-13g spaced apart from one another.

The first transport device 11 and the second transport device 12 are operatively connected to each of the electric drives 5, 5a (see, for example, fig. 2) via a gear 20, 20a (see, for example, fig. 1, 4 a). Each electric drive 5, 5a is operatively connected to the respective articulation 3, 3a via a respective gear arrangement.

Furthermore, each conveying means 11, 12 comprises a bent holding means 14, 14 a. The bent holding means 14, 14a (see, for example, fig. 3) of the conveying means 11, 12 are arranged mirror-symmetrically to one another.

In the exemplary embodiment according to fig. 1 or 2, the first conveying means 11 and the second conveying means 12 are each arranged movably along the guide means 7, 7 a. The guide means 7, 7a are configured substantially dumbbell-shaped, having a greater height 17, 17a at their respective end portions 15, 15a, 15b, 15c (see also fig. 4a) than at the intermediate portions 16, 16 a.

According to fig. 2, several gears 6, 6a-e are included. The main task of the gear wheels 6, 6a-e is to transport the foil hose. When the conveying means 11, 12 are brought together in the direction of movement 21, 21a (see also fig. 3 and 4a), the toothed wheels mesh with one another and the rotary movement for conveying the film or the film tube is transmitted to the counter roller, i.e. the conveying unit.

In a particularly advantageous embodiment of the invention, it can therefore be provided that only one drive is provided for each transport device 11, 12. This may mean a significant simplification of the construction of the welding unit 1, 1 a.

If the film remains stuck to the welding means 2, 2a, the tension is also ensured due to the gear in order to loosen the film.

Although several gearwheels 6, 6a-e are shown in the figures, it can be provided in one design of the invention that the number of gearwheels is four, wherein these gearwheels are mounted on only one side, so that a pair of gearwheels is provided for the upper side, i.e. on the top side 22, and a pair of gearwheels is provided for the lower side, i.e. on the bottom side 23, respectively.

According to the embodiment according to fig. 1 and 2, the welding unit 1, 1a comprises a guide mechanism 7, 7a for guiding the welding mechanism 2, 2 a. The guide mechanisms 7, 7a each comprise a runner 8, 8a (see for example fig. 2 and 4 a).

In order to weld the foil hose (not shown) filled with waste by means of the welding unit 1, 1a, the welding means 2, 2a (see for example fig. 4a) are moved relative to each other in the movement direction 21, 21a, respectively, until they are brought together (fig. 4 d). In this closed position, the foil hose can be heat-welded. It can be seen in fig. 4d that the articulated mast is extended until shortly before its dead center, since the articulation points of the articulated masts 4 and 4a facing away from the welding means 2, 2a do not lie in a line. Since the pressing force has its maximum at the dead point, moving to or even beyond the dead point can result in noise in the system, or even a sudden impact. This can sometimes be perceived as uncomfortable or defective.

The movement of the welding means 2, 2a does not take place linearly here, but rather takes place via the articulated levers 4, 4a (see, for example, fig. 4a to 4d), which the articulated arrangement (see fig. 1) comprises.

Due to the articulated movement of the welding means 2, 2a, their distance can be reduced or accelerated compared to a linear movement. The welding process for closing the foil hose can be correspondingly accelerated.

Furthermore, an articulated movement can also be provided for the conveying device 10 (see fig. 2). The above advantages apply analogously.

In a further possible embodiment, which is not shown in detail, it can also be provided within the scope of the invention that the hinge devices or the respective hinge rods are designed such that they can pass their respective dead center or their respective dead center.

Fig. 3 shows a spring device 24, 24a, 24b, 24c, which is operatively connected to the welding device 2, 2a in order to generate a pressing force on the foil hose (not shown).

Since the structure of the welding unit 1 is symmetrical, the spring means acts on both welding means.

It is possible that these spring means are operatively connected to the welding means via shafts 26, 26a of the gears 20, 20a (see, for example, fig. 4a, 4b, 4c, 4 d).

In addition or alternatively, it is possible for these spring means to be operatively connected to the welding means via the hinge levers 4, 4 a-e.

In a manner not shown in detail, it is also possible to include only one spring means, which is operatively connected to a welding means in order to generate a pressing force on the foil hose.

The spring means 24, 24a, 24b, 24c can be designed as tension springs or compression springs (not shown).

It is also possible that a plurality of spring means are present, wherein there are spring means (not shown) designed as tension springs and compression springs.

In the embodiment according to fig. 3, several spring mechanisms 24, 24a, 24b, 24c are included. In this case, each welding means is operatively connected to a spring means. For clarity, only spring mechanisms 24, 24a of component assembly 25 (fig. 3) and spring mechanisms 24b, 24c of component assembly 25a (fig. 3) are shown. These spring means are operatively connected to the welding means 2 (see fig. 1 for this purpose); however, other spring mechanisms, not shown, are possible and in particular provided with respect to the mirror-symmetrically arranged component assemblies 25, 25a and in particular also with respect to the welding mechanism 2.

In the exemplary embodiment shown, the spring means 24, 24a, 24b, 24c are embodied as spring means of the same type. In a manner not shown in detail, it is also possible that different types of spring mechanisms are present, such as compression springs and tension springs.

List of reference numerals

1 welding unit

1a welding unit

2 welding mechanism

2a welding mechanism

3 hinge device

3a hinge device

4 articulated rod

4a hinge rod

4b hinge rod

4c hinge rod

4d hinged rod

4e hinge rod

5 driver

5a driver

6 Gear

6a gear

6b gear

6c gear

6d gear

6e gear

6f gear

7 guide mechanism

7a guide mechanism

8 chute

8a chute

9 shaft

9a shaft

10 conveying device

11 first conveying mechanism

12 second conveying mechanism

13-roller component

13a roller component

13b roller component

13c roller component

13d roller component

13e roller component

13f roller component

13g roller component

14 holding mechanism

14a holding mechanism

15 end portion

15a end portion

15b end portion

15c end portion

16 middle part

16a middle part

17 height

17a height

18 front view side

19 frame

20 gears

20a gear

21 direction of motion

21a direction of motion

22 top side

23 bottom side

24 spring mechanism

24a spring mechanism

24b spring mechanism

24c spring mechanism

25 component assembly

25a component assembly

26 shaft

26a axle