Heated Hose For Delivering A Liquid Adhesive

Abstract

A heated hose for delivering a liquid, in particular for delivering an adhesive has a flexible hose for the passage of the liquid, an insulating layer surrounding the flexible hose, and a heating device surrounding the flexible hose. The heating device is arranged between the flexible hose and the insulating layer. The insulating layer has a strip-shaped insulating material that is wound helically around the flexible hose. The strip-shaped insulating material contains an aerogel.

Claims

1. A heated hose for delivering a liquid, comprising: a flexible hose for the passage of the liquid; an insulating layer surrounding the flexible hose; and a heating device surrounding the flexible hose; wherein the heating device is arranged between the flexible hose and the insulating layer; wherein the insulating layer comprises a strip-shaped insulating material; wherein the strip-shaped insulating material is wound helically around the flexible hose; and wherein the strip-shaped insulating material contains an aerogel.

2. The heated hose as claimed in claim 1, wherein the strip-shaped insulating material has a width of about 15 mm to about 60 mm and/or the strip-shaped insulating material has a thickness of about 1 mm to about 3 mm.

3. The heated hose as claimed in claim 1, wherein the strip-shaped insulating material is wound in a self-overlapping manner around the flexible hose, the overlap being about 20% to about 50% in relation to the width of the strip-shaped insulating material.

4. The heated hose as claimed in claim 1, wherein the aerogel is an aerogel based on silicate.

5. The heated hose as claimed in claim 1, wherein the insulating material has a fiber-based supporting structure.

6. The heated hose as claimed in claim 1, wherein the strip-shaped insulating material has a coating.

7. The heated hose as claimed in claim 6, wherein the coating is a silicone based coating or a polyurethane based coating.

8. The heated hose as claimed in claim 1, wherein the strip-shaped insulating material has a sheath.

9. The heated hose as claimed in claim 1, wherein the heated hose has a covering layer that directly surrounds the insulating layer.

10. The heated hose as claimed in claim 9, wherein the covering layer comprises a strip-shaped covering material that is wound helically around the insulating layer in a self-overlapping manner around the insulating layer.

11. The heated hose as claimed in claim 1, wherein the heated hose comprises a control line and/or an electric supply line configured to be connected to a delivery device component and/or an application device component that interacts with the heated hose, the heated hose having a connecting structure that is connected to the control line and/or to the electric supply line, wherein the connecting structure is configured to be connected to a corresponding mating structure of the delivery device component and/or the application device component.

12. The heated hose as claimed in claim 11, wherein the control line and/or the electric supply line are/is wound helically around the insulating layer.

13. The heated hose as claimed in claim 1, wherein the heated hose has an outer cover.

14. The heated hose as claimed in claim 1, wherein a winding direction of the covering material and/or a winding direction of the control line and/or a winding direction of the electric supply line and/or a winding direction of the heating device correspond/corresponds to a winding direction of the insulating material.

15. The heated hose as claimed in claim 1, wherein a lead angle of the strip-shaped insulating material that is wound helically around the flexible hose is between about 5° and about 30°.

16. The heated hose as claimed in claim 15, wherein the lead angle of the strip-shaped insulating material that is wound helically around the flexible hose is about 15°.

17. The heated hose as claimed in claim 3, wherein the overlap is about 45% to about 50% in relation to the width of the strip-shaped insulating material.

18. The heated hose as claimed in claim 6, wherein the coating is a friction-reducing coating and/or a dust-retaining coating.

19. The heated hose as claimed in claim 11, wherein the control line and/or the electric supply line are/is wound helically around the covering layer.

20. The heated hose as claimed in claim 14, wherein all of the component parts of the heated hose which are wound helically around the flexible hose have the same winding direction.

Description

BRIEF DESCRIPTION OF THE DRAWING FIGURES

[0044] FIG. 1 shows an exemplary embodiment of a heated hose according to the present invention in a sectional view.

[0045] FIG. 2 shows the heated hose according to FIG. 1 in an intermediate stage during the production of the heated hose, in a perspective view.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0046] FIGS. 1 and 2 show a heated hose 1 for delivering a liquid, in the present case for delivering an adhesive, wherein FIG. 2 shows the heated hose 1 in an intermediate stage during the production of the heated hose 1, and FIG. 2 thus shows the heated hose 1 in an unfinished state.

[0047] The heated hose 1 has a flexible hose 2 for the passage of the liquid. The flexible hose 2 is surrounded by a heating device 3, wherein, in the present case, the heating device 3 comprises two heating wires wound helically around the flexible hose 2, wherein one end of one heating wire is connected to one end of the other heating wire. With such a configuration of the heating device 3 with heating wires connected to one another at the ends, it is possible to connect the power supply of the heating device 3 at just one end of the heated hose 1. It is regarded as particularly advantageous if the respective heating wire is surrounded by electric insulation. The electric insulation can be, for example, a PTFE coating or silicone coating, or a casing made of PTFE or a casing made of silicone. The material PTFE is preferred, however.

[0048] The heated hose 1 furthermore has an insulating layer surrounding the flexible hose 2 and the heating device 3, wherein the insulating layer is formed by a strip-shaped insulating material 4, wherein the strip-shaped insulating material 4 is wound helically and in a self-overlapping manner around the flexible hose 2 and the heating device 3, wherein the overlap is about 50% in relation to a width B of the strip-shaped insulating material 4. The strip-shaped insulating material 4 has an aerogel.

[0049] The heated hose 1 furthermore has a covering layer 5 which is dustproof or at least reduces the release of dust, wherein the covering layer 5 directly surrounds the insulating layer. The heated hose 1 furthermore comprises a plurality of control lines 6 and a plurality of electric supply lines 7, wherein the plurality of control lines 6 and the plurality of electric supply lines 7 are wound helically around the covering layer 5.

[0050] The heated hose 1 has an outer cover 8, wherein the outer cover 8 surrounds the control lines 6 and the electric supply lines 7 and seals off the internal component parts of the heated hose 1 from the environment.

[0051] At the end, the heated hose 1 has a connecting structure 9 in order to establish fluid communication between the heated hose 1 and further components of an application device and/or delivery device and/or melting device. In order to prevent penetration of dust and/or liquids into the interior of the heated hose 1 in the region of the connecting structure 9, the heated hose 1 has at the end, and thus in the region of the connecting structure 9, an end cap 10 which surrounds the connecting structure 9, wherein the end cap 10 also surrounds a partial region at the end of the outer cover 8.

[0052] It is entirely conceivable that the heated hose 1 additionally comprises a temperature sensor, wherein the temperature sensor is preferably arranged between the insulating layer and the flexible hose 2.

[0053] As can be seen especially from FIG. 1, all of the component parts of the heated hose 1 which are wound helically around the flexible hose 2 have the same winding direction.