WO1994017979A1

WO1994017979A1 - Process and device for manufacturing hoses with connection elements

Info

Publication number: WO1994017979A1
Application number: PCT/EP1994/000391
Authority: WO
Inventors: Martin Fitz
Original assignee: Dipl.-Ing. Henn Ges.M.B.H. & Co. Kg
Priority date: 1993-02-12
Filing date: 1994-02-11
Publication date: 1994-08-18
Also published as: AU6108694A; DE4304246A1

Abstract

In a process for manufacturing hoses with connection elements, in particular multilayered hoses, the connection elements (7, 8) are introduced into the hoses during their manufacture, and are form-fittingly and sealingly enclosed by the hoses (25). These connection elements remain hidden in the hoses or are localized by a position sensing station (14), so that the hoses (25) may be cut by a cutting device (17) at the points of separation (27). Alternatively, the connection elements (7, 8) may also be introduced into a special device after the vulcanized hoses (25) have been cut into lengths, so that they are form-fittingly and sealingly surrounded by the core (4), the reinforcement (10) and the sheath (11) of the hoses. Hoses (25) are thus obtained with integrated connection elements which are firmly anchored in the hose without additional connection elements which project beyond the circumference of the hose.

Description

Method and device for producing a hose with the addition of connecting elements

The invention relates to a method for producing a hose, which is suitable for various applications and pressure ranges. The invention relates in particular to hoses with wound, braided or knitted reinforcements, which hoses are suitable both for the high pressure area and for the low pressure area for the conduction of liquids and gases. Such hoses usually consist of a core and a reinforcement surrounding the core, which in turn is surrounded radially outwards by a tube cover. The invention encompasses all manufacturing processes for the individual parts of such hoses, i.e. the core can be extruded or wound, as can the cover.

So far, all types of hoses and lines have been industrially manufactured, cut to length, shaped on a case-by-case basis and delivered to dealers or end users. These equipped the parts according to the application with a connection or coupling fitting, which was usually attached to the hose or line with pressed sleeves.

There was also the option of plugging the hoses onto a nipple on the sockets and attaching them to them using hose clamps.

This method had - depending on where, by whom and with which tools they were carried out - various disadvantages: - the connecting element had to be either manual or be attached to the hose by means of a device;

- The connecting elements, in particular the couplings, were of a very large-volume and complicated design and thus correspondingly expensive;

- In poorly accessible places or where several hoses or lines were positioned close together, it was hardly possible to actuate the couplings or hose clamps or to accommodate or mount them at all;

- The hose clamps in particular were poorly secured against incorrect operation, which repeatedly led to leaks in the hose or line connection; - the processor was often unable to

To attach hose connectors to the hose since it did not have the special tools or devices;

- The attachment of the connecting elements in the manufacture of individual special versions of

Hoses were always pure manual and one-off production and extremely expensive;

- Especially when using hose clamps, there was the problem of leakage, since the hose rubber ages and 'crawls away' under the pressure load.

The invention is therefore based on the object of developing a method of the type mentioned at the outset so that connecting elements can be connected to the hose in a simple and cost-saving manner.

The technical teaching of claim 1 serves to solve the problem. With the given technical teaching, the user has the advantage that the connecting elements take up little space because they are practically already integrated in the hose, which results in a simple and quick connection which offers more security against incorrect operation and, moreover, a guarantee against leaks, because the connecting elements can no longer be damaged by incorrect installation.

As a result, the user of these products has great advantages such. B.:

- Practically no protruding parts by connecting elements integrated in the hose, so that the hoses can be positioned extremely close to one another;

- very easy assembly due to axial plug-on movement - very quick and without special skill possible;

- Assembly also possible in very difficult to access places, since no tools are necessary and only have to be attached;

- Incorrect operation is practically impossible due to the simplicity of assembly and the design of the connecting elements ... very high security;

- The connecting elements are vulcanized into the hose by the production process, which guarantees perfect tightness over the entire service life;

- Because of the simple structure and the extremely low material requirements of the integrated couplings, they are very inexpensive.

The method according to the invention is suitable for all hoses according to the prior art. This means that the invention is not only for the integration and introduction of connecting elements in multi-layer hoses suitable, but it is also suitable for introducing such connecting elements into the production process of any hoses - including plastic hoses.

As far as wound hoses are used, it is preferred if the respective connecting element is positively inserted in the space between the core and the reinforcement surrounding the core and fastened there.

When using plastic hoses, e.g. Polyamide hoses that are manufactured without a mandrel in the single- or multi-layer extrusion process, it is also essential that the connecting elements are positively and completely enclosed by the hose and that they are either already during extrusion or after extrusion into the hose be introduced.

All manufacturing processes therefore presuppose that the connecting elements are introduced into the tube during the manufacture of the tube and are enclosed by the tube in a form-fitting and sealing manner. Here, the invention provides various embodiments. All known fasteners can be used as fasteners, such as. B. male and female coupling parts, threaded sleeves and threaded connectors, bayonet couplings, screw couplings, plug-in couplings and the like. More.

The invention provides that not only a certain type of connecting element is introduced into the hose, but that these connecting elements are also introduced in pairs, so that, for. B. for the manufacture of a plug-in coupling a pair of connecting elements is introduced into the hose, which lies close together, one connecting element being designed as a plug-in socket and the other connecting element being designed as a coupling sleeve. This pairing of connecting elements has the advantage that you only have to search for the dividing line between the two integrated connecting elements in the hose after the manufacture of the hose in order to cut open the hose at this point in order to have ready-made connecting elements, ie the

The hose is then ready-made. This results in the significant advantage that there is now no need for a separate assembly of a connecting element on a hose, but the connecting elements are - according to the technical teaching of claim 1 - already integrated into the hose during manufacture of the hose.

It is of course possible to integrate other pairings of connecting elements into the hose, e.g. B. only paired female fasteners or only paired male fasteners.

It is therefore important to note that all known connecting elements which are known in the connection technology of hoses can be integrated into such a hose during manufacture.

Moreover, when using the method according to the invention, hose clamps, pipe clamps and the like are avoided, which must always be used when connecting elements are retrofitted.

With the integration of the connecting elements in the hose There is also the advantage that these connecting elements are optimally protected against damage, since they are practically completely surrounded by the hose material itself and can therefore also withstand strong notch effects, impact stresses and the like, because practically no external parts of the connecting element available.

The method according to the invention therefore has the following advantages:

+ absolute tightness due to the coupling rings braided and vulcanized into the hose + minimal space requirement in diameter due to internal coupling

+ short length of the coupling (approx. 30 mm) ... therefore also very short connecting pieces possible + very inexpensive parts (as cast or pressed parts with very little material requirement) + independent of the wall thickness of the hose + independent of the hose tolerances + during of the hose production process can be attached automatically + easy handling due to axial plug-on movement + secure connection by noticeable and audible locking of the holding pawls + manual release of the connection by actuating the locking ring + hose connector made of metal or plastic possible + the flow opening of the hose remains in the coupling without Receive loss + the already integrated coupling in the hose reduces the administrative and handling effort of the user + automated assembly possible + very easy to assemble, even in places that are difficult to access

+ perfect visual appearance, since only the ratchet ring is visible + possible for all media

+ possible for relatively high pressures (depending on the strength of the hoses)

+ can be opened and closed as often as required

+ unchanged hose diameter for the extruded hose

The invention relates not only to connecting elements which are sleeve-shaped and which are integrated into the hose, but the connecting elements can also be designed in a subdivision and assembled as complete parts at the place of assembly before being introduced into the hose. So it is z. B. possible to form the connecting elements from half shells or third shells and to assemble these shell parts only at the place of assembly when they are introduced into the hose so as to obtain the complete connecting element.

In addition to the introduction of connecting elements, other parts can also be integrated into the hose during hose production.

It is preferred in this case if, in particular, anti-kink sleeves are introduced which are either already connected to the connecting element or which are attached separately to the connecting element.

Spring elements can also be inserted instead of anti-kink sleeves. The subject matter of the present invention results not only from the subject matter of the individual patent claims, but also from the combination of the individual patent claims with one another. All of the information and features disclosed in the documents, including the summary, in particular the spatial configuration shown in the drawings are claimed as essential to the invention, insofar as they are new to the prior art, individually or in combination.

The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. Here, from the drawings and their description, further features and advantages of the invention that are essential to the invention emerge.

Show it:

Figure 1: schematically shows an embodiment of a method for manufacturing a hose with integrated connecting elements;

Figure 2: a detail of the method of Figure 1 with

Representation of a loading station;

Figure 3: a modified detail compared to Figure 2 showing another insertion station;

Figure 4: schematically shows the finished tube in section according to an embodiment;

Figure 5a: a first example of the pairing of connecting elements;

Figure 5b: a second example of the pairing of Fasteners;

Figure 5c: a third embodiment for the pairing of connecting elements;

Figure 6: Section through a pair of connecting elements in engagement;

Figure 7: Section along the line VII-VII in Figure 6.

Figure 8: Section through an alternative embodiment of a pair of connecting elements.

As an exemplary embodiment of the invention, FIG. 1 shows the production of a hose, the core 4 of which is extruded, the material for the extrusion of the core being introduced via a feed 2 into an extruder 3, with which the core 4 is sprayed over a mandrel 1 .

The finished core 4 is placed in an insertion device 5 for inserting the connecting elements 7, 8. Alternative embodiments of insertion devices are shown in FIGS. 2 and 3.

The connecting elements 7, 8 are introduced into the inserting device 5 by means of inserting grippers 23 (see FIG. 2), placed on the core 4 according to FIG. 2, and thereby connected via vibrating conveyors 6 or other feed devices.

The insertion device according to FIG. 3 shows another possibility of insertion, there are shown one-piece connecting elements 7 which are threaded onto the mandrel 1, the threading of the locking device binding elements 7 on the mandrel 1 either before the extruder 3 or after the extruder 3 takes place.

In the first case, the connecting elements 7 threaded onto the mandrel 1 are pushed through the extruder and are encapsulated by the plastic material of the core and are then sealed and positively surrounded by the core.

The other possibility of threading on after the extruder provides that the connecting elements are provided on a threading station shortly after the extruder, the extruded core being guided through the clear interior of the annular connecting elements and the connecting elements by insertion grippers which extend in the axial direction of the hose are movable, positioned at the required position on the hose and carried with it.

The embodiment described above is therefore not shown in FIG. 1, because the insertion device 5 shown there presupposes that with the

Vibratory conveyors half-shell or third-shell-shaped connecting elements 7, 8 are placed on the core 4 and snapped on, as shown in FIG. 2.

FIG. 3, on the other hand, shows an insertion station of the type that can be used before or after the extruder 3 as described above.

In the insertion station according to FIG. 3, it is also essential that the connecting elements threaded on the mandrel 1 or on the core 4 are retained by a barrier 24 which is located in vertical direction only opens when the next connecting element is to be positioned by the insertion gripper 23, which insertion gripper 23 is designed to be movable in the axial direction of the mandrel or core 4.

Likewise, the mandrel 1 can be retracted and retracted in the axial direction of the hose, the mandrel being carried along behind the extruder 13 to produce the cover 11. The mandrel 1 remains in the hose until the hose is vulcanized and only then is it withdrawn.

The reinforcement 10 is optionally wound, braided or knitted with the winding mechanism 16. All yarn materials come into consideration as the material which is drawn off from the bobbins 9, e.g. Textile thread, metal thread, plastic thread and the like

Instead of processing individual threads, pre-processed tapes, braids or knitted fabrics can also be processed.

An alternative place for inserting the half or third-shell connecting elements is in

Claim 3 represented by the connecting elements (7a, 7b) after the reinforcement (10) of the core (4) are inserted by the insertion gripper (23) and thereby enclose both core (4) and reinforcement (10).

After completion of the reinforcement, the hose is fed into the extruder 13, the material for the extrusion being introduced via a feed 12. The ceiling 11 is thus extruded onto the reinforcement 10, so that the hose 25 is thus completed is. It reaches a vulcanization chamber 15, where the material is vulcanized.

At the exit of the vulcanization chamber, the hose arrives in a mandrel plant, where the mandrel is pulled out of the finished vulcanized hose.

The hose 25 then arrives in a position detection station 14, which is used to detect the connecting elements 7, 8 assigned to one another. After these connecting elements are concealed in the hose, the subsequently connected cutting device 17 must be actuated by the position detection station 14 in order to precisely recognize the parting line between the paired connecting elements 7, 8 which are assigned to one another.

The position detection station 14 can work with different methods. A first preferred method provides that metal detectors are used which are used in the event that the connecting elements 7, 8 consist of metal parts. Metallized plastic parts can of course also be processed.

In another embodiment, the position detection station can work with ultrasound or X-rays. It is also possible for the cutting device 17 to be controlled purely by calculation, with corresponding hose lengths being measured starting from production, which then tell the cutting device 17 at which hose position the knife 18 has to be cut.

The knife 18 thus cuts apart connecting elements 7, so that hose Sections are created which have connecting elements 7, 8 that are as different as possible on opposite sides, in order to make the hoses ready for use. However, this is not necessary for a solution, because similar connecting elements can also be arranged on the hose ends. In the pulling device 19, the core piece 4 is cut radially from the inside at the right place to the inner surface of the connecting element and then pulled out in the direction of the arrow from the hose, which is now essentially ready for use. If it proves to be necessary, the inner surface of the connecting element can be cleaned in the post-processing station 20 or cleaned in a downstream cleaning station 21. A test station 22 is connected downstream, with the aid of which the finished hose is checked.

The described method relates to a vulcanizable hose which has an extruded or wound core and a wound or braided reinforcement. The invention is not restricted to this.

Rather, the invention relates to all known hose manufacturing methods and relates to the insertion of any connecting elements in the manufacture of the hose. This also includes other hose manufacturing processes, such as. B. plastic hoses that are produced in the extrusion process or the like. Other processes.

FIG. 4 shows a hose 25 of this type before it passes through the cutting device 17, where it can be seen that connection elements arranged in pairs elements 7, 8 are integrated in the interior of the hose, lying close together. Markings 26 can be made on the outer sides of the hose in order to mark the separation point 27 at which the cutting device 17 is to operate.

FIGS. 5a to 5c show different pairings of connecting elements as exemplary embodiments.

In the exemplary embodiment according to FIG. 5a, two female connecting elements 7 are shown, which can be separated from one another by the separating point 27 to be attached later.

In the exemplary embodiment according to FIG. 5b, two male connecting elements 8 are shown, which are likewise separated from one another in the region of the separation point 27, while in the exemplary embodiment according to FIG. 5c, a female and a male connecting element 7, 8 are shown, which are already in sealing engagement with one another, only the snap ring 40 (FIG. 6) is missing because this must later be operable from the outside.

In the case of the sealing engagement of the paired connecting elements 7, 8 according to FIG. 5c, there is the additional advantage that valuable hose length is saved because the parts mentioned are already in engagement.

An exemplary embodiment of a paired connecting element 7, 8 is described in more detail with reference to FIGS. 6 and 7.

Here, the hose consists of, as previously mentioned the core 4, which forms the innermost layer of the hose 25, which in turn is surrounded radially outwards by a reinforcement 10. According to FIG. 6, the connecting element 7 is integrated in the space between the core 4 and the reinforcement 10, a radially inwardly directed cutting ring 28 engaging the front side of the core 4 and thereby forming an end edge 30, with the aim that the core piece , which lies on the opposite side of the cutting ring 28 (not shown) can be easily removed with the pulling device 19.

On the outer circumference of the sleeve-like connecting element 7, a number of spaced-apart annular grooves 29 can be arranged in order to ensure a positive engagement of the reinforcement in these annular grooves 29.

These ring grooves 29 can also be replaced by knobs, by ribs, by lugs or the like. All that matters is the positive engagement of the reinforcement 10 in the region of this radially outer profile of the connecting element 7.

The connecting element 7 forms a sealing surface 33 on the radially inward surface, which cooperates with opposite O-rings 32 of the other connecting element 8.

The connecting element 8 also essentially consists of a sleeve-shaped part, which has a smaller diameter, so that it extends into the inner bore of the connecting element 7 and the O-rings 32, which are arranged in corresponding ring grooves, seal against the radial inside Apply sealing surfaces 33.

The connecting element 8 forms an insertion bevel 37 on the end face in order to facilitate insertion into the bore of the connecting element 7.

In the same way, the connecting element 7 also has an associated insertion bevel 35.

The connecting element 8 also has an annular groove 39 in which a rotatable locking ring 40 is arranged. This locking ring 40 has an outer rotating ring 44 and forms an axially inward into the interior of the connecting element 7 spring extension 43 which carries a locking lug 42 at its front end. This locking lug 42 interacts with a radially inwardly directed locking projection 34 at the front end of the connecting element 7.

FIG. 7 shows the closed position of the locking ring in the connecting element 7, it being important that in the closed position the locking lug 42 bears against a stop bead 38 of the connecting element 8 and secures it against axial slipping out of the connecting element 7. At the same time, the radially outward locking lug 42 hooks behind the radially inward locking projection 34 of the connecting element 7.

This closed position is shown in Figure 6. To open the connection, the locking ring 40 is rotated in the circumferential direction, as a result of which the locking lugs 42 according to FIG. 7 into the area of lugs lying opposite one another on the inside of the Connecting element 7 arrive, the lugs 46 defining a smaller diameter than, for example, the surfaces in the recess 45 which are distant from the lugs 46.

By rotating the locking lugs 42 in the circumferential direction into the area of the lugs 46 lying opposite one another in alignment, the locking lugs 42 are thus moved radially inward in relation to one another and thus disengage from the locking projection 34 of the connecting element 7, so that the connecting element 8 together with the locking ring 40 can be pulled out of the connecting element 7 in the axial direction.

The two connecting elements 7, 8 also form a continuous flow opening 36 for the medium to be transported, for. B. liquid or gas.

The connecting element 8 can also carry a connecting part 41 in the rear area, which has a thread 47, with the aid of which the connecting element 8 is fastened, the connecting part 41 being able to be connected to any other connecting parts.

FIG. 8 shows the engagement position of an alternative coupling design, in which the connecting elements 7a, 7b are arranged above the reinforcement 10 and are completely and positively encased by the hose cover 11. The connecting elements 7a, 7b only take on the mechanical forces in the radial and axial directions, while the seal is achieved by pressing a sealing cone 48 onto the end face 49 of the core 4 and the reinforcement 10. Thereby the main advantage is that no additional sealing rings are necessary, which makes the construction of the connecting elements much easier and cheaper.

The advantage of the method according to the invention and a hose connection produced by the method is that no additional fastening parts are required to fasten connecting elements to the hose, because these connecting elements are already integrated in the hose.

Drawing legend

I mandrel 26 marking 2 feed 27 separation point

3 extruders 28 cutting ring

4 core 29 ring groove

5 inserting device 30 front edge (core 4)

6 vibrating conveyor 31 gap 7 connecting element 32 O-ring (7a- half shell 7b - half shell

7 * coupling sleeve

8 * connector) 8 connecting element 33 sealing surface

9 coil 34 locking projection

10 reinforcement 35 lead-in chamfer

II hose cover 36 flow opening 12 feed 37 insertion bevel 13 extruder 38 bulge

14 position detection station 39 groove

15 vulcanization chamber 40 snap ring

16 winding unit 41 connecting part

17 Cutting device 42 Latch 18 Knife 43 Spring attachment

19 pulling device 44 rotating ring

20 post-processing station 45 recess

21 cleaning station 46 nose

22 Test station 47 Thread 23 Insert gripper 48 Sealing cone

24 barrier 49 front end

25 hose

Claims

Patent claims

1.Procedure for producing a hose with non-hose additional elements, in particular an at least two-layer hose with a core and a reinforcement surrounding the core, which in turn is surrounded by a hose cover on the outside of the hose, the hose parts being extruded, sprayed or wound, and the hose with non-tubular additional elements are provided with corresponding connection fittings, the additional elements extending into the reinforcement and the hose having at least at each end a non-tubular additional element, characterized in that it is a continuous process in which the non-tubular additional elements are designed as connecting elements (7, 8) which are introduced into the hose (25) during the manufacture thereof and which are enclosed in a form-fitting, sealing and almost complete manner by the hose (25).

2. The method of claim 1, d a d u r c h g e k e n n z e i c h n e t that pairs of two identical, closely spaced, oppositely arranged, connecting elements (7,7; 8,8) are each inserted into the tube at a certain distance from each other.

3. The method according to claim 1, characterized in that the connecting elements (7, 8) are each paired and lying close to one another in the hose. The one connecting element as a plug-in socket (8) and the other Connecting element is designed as a coupling sleeve (7).

4. The method according to claim 1, d a d u r c h g e k e n n z e i c h n e t that further parts, such as. Kink protection sleeves are integrated into the hose during hose production.

5. The method according to any one of claims 1-4, for producing an at least two-layer hose over a mandrel, with the method steps: a. Extruding the core (4) over a mandrel (1) in a first extruder (3); b. Extrude the hose cover (11) onto the core (4) surrounding the mandrel (1) in a second

Extruder (13); c. Vulcanizing the hose (25) in a vulcanization chamber (15); d. Withdrawing the mandrel (1) from the vulcanized hose (25) in a mandrel system; e. Cutting the hose (25) to the desired hose length in a cutting device (17), the process step f. the connecting elements (7, 8) are inserted in the correct position around the mandrel (1) by means of an insertion device (5) before the hose cover (11) is extruded onto the core (4).

6. The method according to claim 5, characterized in that at least one Ver¬ connecting element (7,8) before the extrusion of the core (4) by means of an insertion device (5) is threaded in the correct position on the mandrel (1) and by the extruder (3) is pushed and then formally by the soul (4) conclusively surrounds the subsequent process steps.

7. The method according to claim 5, characterized in that the connecting elements (7,8) are applied to the outer surface of the core (4) and surround it coaxially in a certain length range and thereby the core (4) within the covered area along a circumferential line Cut the mandrel while seated before extruding the tube cover.

8. The method according to any one of claims 1-4, characterized in that at least one connecting element (7) before Extrudie¬ ren the hose cover (11) by means of an insertion device (5) in the correct position on the possibly with a Ar¬ arming (10) provided soul (4) is inserted and pushed through the extruder (13) and then surrounded by the tube cover (11) in a form-fitting manner through the subsequent process steps.

9. The method according to claim 5, characterized by the further step, wrapping the core (4) with a reinforcement (10) in a Wickel¬ plant (16), after which the connecting elements (7,8) have been used and before the extrusion Hose cover (11).

10. The method according to claim 5, characterized in that a position detection station (14) determines the position of the separation point (24) of the mutually associated connecting elements (7, 8) in the hose (25) and the subsequently connected cutting device (17) accordingly drives to the hose cut off accordingly or cut into the soul.

11. The method according to claim 7 and 10, so that after cutting off the hose in the cutting device (17) the severed soul piece (4) is pulled out of the connecting part (7,8) after the hose has been cut off.

12. The method according to any one of claims 8 - 11, characterized in that after cutting the hose in the cutting device (17) the core (4) and the possible reinforcement (10) cut open from the inside at the intended location and thereby the front edge (49th ) is formed so that the soul piece (4) that is not required can be pulled out of the connecting part (7).

13. Device for carrying out the method according to one or more of claims 1 to 12, with:

- an extruder (3) for extruding the core (4);

- An extruder (13) for extruding the tube thickness (11) onto the core (4);

- a vulcanization chamber (15), where the hose materials are vulcanized;

- A mandrel (1) around which the hose (25) is formed and which is fed through both extruders (3, 13) and the vulcanization chamber (15) up to - a thorning system in which the The mandrel (1) is pulled out of the fully vulcanized tube (25);

- A cutting device (17) with which the hose (25) is cut to the desired length; and if necessary - At least one reworking station, in which the cut ends of the hose are reworked, characterized in that an insertion device (5) is provided in front of the extruder (13), which positions the connecting parts (7, 8) correctly in their position surrounding the mandrel puts; and

- That a position detection station (14) is provided which determines the exact position of the connecting elements (7,8) in the hose and controls the cutting device (17) accordingly.

14. The apparatus according to claim 13, characterized in that the insertion device (5) has at least one insertion gripper (23) which is movable in the axial direction of the hose and which engages on the mandrel (1) threaded connecting elements (7,8) and positioned at the desired location on the hose (25) and carried along; and a barrier (24) is also provided which is pivotably mounted in the vertical direction and which retains the threaded connecting elements (7, 8) and opens in the vertical direction when a further connecting element (7, 8) is to be positioned.

15. The apparatus according to claim 13, characterized in that the insertion device (5) has at least two insertion grippers (23), which each have means for gripping half-shell or third-shell-shaped connecting elements (7,8) and which are movable radially to the mandrel circumferential surface to to position the connecting elements (7,8).

16. The apparatus according to claim 13, characterized characterized in that the position detection station (14) has a metal detector.

17. The apparatus according to claim 13, so that the position detection station (14) is designed as an ultrasound locating device.

18. The apparatus of claim 13, d a d u r c h g e k e n n z e i c h n e t that the position detection station has an X-ray system.

19. Apparatus for carrying out the method according to one of claims 1-12, g e k e n n z e i c h - n e t with:

- An extruder (3) or a winding device for the manufacture of the core (4);

- A winding, knitting or wattle (16) for the possible application of a reinforcement (10) to the soul (4);

- an extruder (13) or a winding device for applying the hose cover (11) to the core (4), which may be provided with a reinforcement (10);

- a vulcanization chamber (15), where the hose materials are vulcanized;

- a mandrel (1) around which the hose (25) is formed and which is carried through both extruders (3, 13) and the vulcanization chamber (15), up to - a mandrel system in which the mandrel ( 1) is removed from the fully vulcanized hose (25);

- A cutting device (17) with which the hose (25) is cut to the desired length; and - at least one post-processing station, in which the cut ends of the hose are reworked, characterized in that an insertion device (5) is provided which sets the connecting elements (7, 8) in the correct position at the respective point in the manufacturing process to their position at least surrounding the mandrel; and - that a position detection station (14) is provided which determines the exact position of the connecting elements (7, 8) in the hose and controls the cutting device (17) accordingly.

20. Hose with connecting elements, which is produced by the method according to claims 1-12 and which is formed at least in two layers, with a core and a hose cover surrounding the core, and with the hose connected connecting parts for coupling with suitably designed connection fittings, characterized, that the connecting parts (7, 8) are integrated in the hose (25) and are positively and sealingly encompassed by the hose (25).

21. Hose according to claim 20, so that two identical connecting elements (7,7; 8,8) are arranged in pairs close to one another opposite one another in the hose.

22. Hose according to claim 20, characterized in that a male and a female connecting part (7,8), which are in sealing engagement with each other, are inserted into the hose (25), the male Connection part as a plug socket (8) and the female connection part as a coupling sleeve (7) are formed and both together form a hose coupling.

23. Hose according to claim 20, so that at least the coupling sleeve (7) is formed from half-shells (7a, 7b) which are separated in the longitudinal direction.

24. Hose according to one of claims 20 - 23, in which between the core (4) and the hose cover (11) is formed a reinforcement (10) surrounding the core (4), characterized in that at least the coupling sleeve (7) between the Soul (4) and the reinforcement (10) is arranged, wherein on the

Coupling sleeve a radially inwardly directed cutting ring (28) is formed, which cuts through the core (4) and forms an end edge (30) of the core (4).

25. Hose according to one of claims 20- 24, characterized in that when producing single or multi-layer hoses (25) the connecting elements (7 and / or 8) consist of rings which are in the vulcanized and already cut hose ( 25) pressed in and held tightly and positively by the pretensioning of the tube thus stretched.