SK67193A3 - Bundle of pipes for cable line, consisting of more plastic pipes and method of its preparation - Google Patents

Abstract

A cable conduit bundle (1) consisting of a plurality of plastic pipes (2), which are made of thermoplastic synthetic material, are combined with the aid of longitudinally running connecting webs (3) (which are integrally formed and can be deformed) and can be separated from the bundle to form a flat pipe unit having two outer pipes, and pipe bundle closure laminates being formed on the outer pipes, originating from a longitudinally running forming line. The two pipe bundle closure laminates are located opposite one another in the cable conduit bundle and are welded to one another by means of a longitudinally running welding seam. A method for production is also specified. <IMAGE>

Description

Technical field

The invention relates to bundles of cable breakers comprising a plurality of thermoplastic plastic pipes which are joined by means of shaped and deformable longitudinally extending connecting bridges and can be developed into a straight pipe aggregate with two outer pipes, the outer pipes being starting from the longitudinally extending shaping curve and the shaped lamellas closing the bundle of tubes. Furthermore, the invention relates to a method of manufacturing such bundles of cable guide tubes.

BACKGROUND OF THE INVENTION

Cable routing bundles are used for electrical cables, fiberglass cables and the like. , and are most often placed beneath the ground. When placed in the ground, they usually come out of cable shafts and result in cable shafts, house connections or the like. At the same time, cable bundles represent a path indicating inhomogeneities in the ground, which is, so to speak, a path to water leakage or even a path of groundwater and inlet surface water that may enter cable shafts, house connections or the like. and cause a malfunction. Thus, in the known bundles of tubes, lamellas closing the bundle of tubes serve to guide the cables. Otherwise, the bundles of cable routing pipes must be sufficiently flexible at the time of laying and in the laid condition so that they can withstand deformations during laying and in subsoil areas, and so on without compromising deformation.

In the known cable bundle on which the invention is based (DE-GM 92 06 473), the lamellas closing the bundle of pipes are arranged so that they project from the forming curve on the plastic tube and lie tangentially on the opposite plastic tube. In this contact curve formed by the tangential arrangement, a direct weld with the outer wall of the tube is made. This has proved its worth, but it can be improved, both technically and functionally. As far as manufacturing is concerned, it is disadvantageous that the welding must be carried out very carefully, especially when it comes to thin-walled plastic pipes, or otherwise the wall of the pipe on which the weld is made could be damaged.

If the welding is carried out too carefully, it is not guaranteed that the weld seam will be sufficiently tight as the stresses increase.

If the weld seam does not seal sufficiently, the sealing function is impaired. The known cable bundles and the straight tube assemblies from which they are formed are manufactured without special precautions according to the rules by extrusion of thermoplastics into tubes and pipe assemblies.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cable bundle of cables of the above-described construction and the above-described purpose of use, which can be manufactured simply and where the weld seam is sufficiently tight and remains sufficiently tight under all normal stresses. It is a further object of the present invention to provide a method by which such a bundle of tubes can be produced in a particularly simple manner.

SUMMARY OF THE INVENTION

In order to solve this problem, the invention teaches in relation to the bundle of cable routing pipes that it is necessary for the two lamellas closing the bundle of cable routing pipes to be opposed to each other and to be welded with the longitudinally extending weld seam. In this case, the shaping curves and the lamellas closing the bundle of tubes lie in this bundle of conduits for routing the cables against one another. According to a preferred embodiment, this is arranged such that the connecting bridges are shaped to the outer tubes along the bonding curves which are diametrically opposed to the curvature curves of the lamellas for closing the tube bundle. The longitudinally extending weld seam is preferably a continuous weld seam. However, it may also show interruptions, preferably those which do not affect the required tightness.

the invention is based on knowledge.

that in the cable bundle of the above-described purpose of use, the constructions as well as the above welded seam are formed without any difficulty when the lamellas closing the bundle of tubes as described are welded against the lamella, when not just welding to the outer wall of the associated plastic tube. This direct welding of the tube bundle shut-offs lying opposite each other can be carried out easily by conventional and proven thermoplastic welding methods, for example by ultrasonic welding, laser welding or the like, without damaging the plastic tubes. A particularly functionally safe and resistant to all stresses is the form of cable bundle according to the invention, characterized in that the longitudinally extending weld seam is formed as a contact weld seam with highly bent, mutually opposed edges on the sealing strips of the tube bundle. bundle of tubes. To ensure that the weld seam faces defined stresses, whether the cables are wound upon production after manufacture or when laid, the plastic tubes learn to be centered together with the seating elements and the bundle of tubes. In spite of the 2 tubes of tubes on the molded and stabilized cables and conduits when the tube bundle is guided by the drum, whether the invention is believed, it is necessary for the tube bundle to guide the cables through the core elements and / or welded shut-off slats. that sufficiently flexible, whether at

- 4 winding on or off the drum, whether laying or laying in the ground in areas of undermining. For this purpose, the invention teaches that there is a need for a winding play on the drum between the plastic tubes and / or core elements and / or contact elements in the cable bundle and to determine this and limit the width of the welded closing blades of the bundle. This embodiment of the invention is of particular importance when the bundle of cable guide tubes is provided with core elements and / or contact elements in the manner described. However, there is always the possibility of connecting multiple pipe assemblies that are straight with several plastic pipes to a bundle of cable guide pipes which has a greater number of plastic pipes than individual pipe assemblies. For this purpose, it is possible to weld together at least one connecting pipe of the plastic pipes in a bundle of cables for guiding the cables from the two closing lamellae of the pipe flanges through a welded weld.

Another embodiment of the cable harness according to the invention, which is characterized by a weld seam which is also resistant to high mechanical stresses, is characterized in that the sealing strips of the bundle have a weld-seam designed as a weld reinforcement formed by surface welding of two partially reinforced Welding profiles are formed at the edges of the tube bundles with pre-treated weld surfaces. According to a preferred embodiment of the invention, the weld metal to be interposed is arranged in a weld groove which is shaped to the weld profiles.

The cable guide tube bundle according to the invention can be manufactured in various ways. In particular, a straight pipe aggregate can be produced and the straight pipe aggregates can already be manufactured

L / these tubular units or only in connection with laying a bundle of cable routing tubes.

The invention furthermore relates to a method for producing 2 tubes of cable guide tubes which can be integrated into an existing production line for the production of straight tube assemblies. In this process, a straight pipe aggregate of plastic pipes, connecting bridges and tube bundle closure devices is extruded in a single production line using a helical plastic press. The flat tube aggregate in the production line after extrusion is folded according to a predetermined extrusion rate continuously into a bundle of cable routing tubes and then continuously welded according to a predetermined extrusion rate by extruding the sealing strips for the tube bundle. A play for the winding drum is provided as described above. According to a preferred embodiment of the invention, the sealing strips of the tube bundle are laid flat against each other when the tube assemblies are folded and a contact weld seam is formed thereafter or thereafter. It will be understood that within the scope of the invention, calibration of the straight pipe aggregate can also be carried out directly after extrusion by extruding a straight pipe assembly. It is possible to straighten the tube assembly directly after compression by extruding the continuity using an auxiliary device into the bundle of cable routing tubes. In order to facilitate welding, it is recommended that the straight tube assembly be extruded together with tube bundle closing flaps that exhibit longitudinally extending handling edge reinforcements, and that the tube bundle closing flaps with handling edge reinforcements overlap the weld overlap closing blades of tube bundle.

If the tube bundle exhibits a welding profile to be formed in the cable routing to be produced, the invention teaches that a method of manufacture in which a flat tube aggregate with shut-offs which exhibit at their edges is extruded by extrusion is advantageous.

The longitudinal tube bundle extending through the weld profiles of the preformed / welded surfaces, wherein the weld profiles are continuously welded at a rate which is determined by the compression molding rate. In this case, it is possible to introduce another weld metal between the weld surfaces when welding the clamping profiles.

Overview of the drawings

The cable routing bundles of the invention are further explained in more detail with the help of drawings showing only one embodiment. Fig. show in schematic form:

Fig. 1 is a cross-sectional view of a cable harness according to the invention, FIG. 2 shows a straight tube assembly to which the cable guide tube bundle shown in FIG. 1, unfolded, FIG. 3 shows a section A of the object according to FIG. 1, at a scale greatly enlarged from that of FIG. 1, and FIG. 4, 5 and 6 in accordance with FIG. 1 shows another embodiment of a cable bundle according to the invention, FIG. 7 in accordance with FIG. 2 shows another straight tube assembly that can be rolled into a bundle of cable routing tubes according to the invention, FIG.

Fig.

which was another embodiment of the object of FIG. 7, a cross-section of a bundle of cable routing tubes.

coiled into a bundle of tube assembly according to FIG. 7, and FIG.

enlarged viewport

B of the weld on the cable bundle of the pipe assembly of FIG. 8th

DETAILED DESCRIPTION OF THE INVENTION

The cable guide tube bundle 1 shown in FIG. 1, as well as 4, 5 and 6, 2 comprises a plurality of cable guide tubes 2 made of thermoplastic, which are connected by means of shaped, deformable, longitudinally extending connecting bridges 3. From the comparative view of FIG. 1 and 2, the cable bundle χ of the cable routing of FIG. 1 can be unfolded into a straight tube assembly with two outer tubes 2 And conversely, it can be seen that a cable bundle X can be formed from such a straight tube assembly. The closing blades 5 of the tube bundle are molded to the outer tubes 2 of the straight tube assembly, starting from the longitudinally extending curve 4 during shaping.

The two tube bundle closing lamellae 5 are arranged in the tube bundle X to guide the cables opposite one another. These are welded together by a longitudinally extending weld seam. In the exemplary embodiment and in accordance with a preferred embodiment of the invention, the curves 4 are opposed to each other when shaping the closure lamellae 5 of the tube bundle in the tube bundle X. Finally, FIG. 2 to be aware that the connecting bridges 3 are formed on the outer tubes 2 along the connection curves 7 which lie diametrically opposed to the forming curves 4 and the closing blades 5 of the tube bundle. In all cases, the longitudinally extending weld seam 4 on the tube bundle closing slats 5 is made as a contact weld seam with opposed edge regions 8 of the tube bundle slats 5 opposite.

This is shown in particular in FIG. Third

FIG. 1, as well as 4, 5 and 6, it can further be recognized that the cable guide tubes 2 are stacked in the middle of the bundle X of the cable guide tubes adjacent to the shaped core elements 9 and / or the support surface elements 10 and are stabilized by the core elements 9 and / or by means of base elements 10 as well as welded closing lamellas 5 of the tube bundle. This stabilization was designed to be

The bundle of X cable ducts has been able to be wound onto the drum, unwound from the drum and laid in an arc-shaped manner, as well as being able to face deformations when laid in undermined areas. Under all these stresses, the welded tube bundle seals 5 are subjected to very defined stresses, which they can withstand completely when there is a play of clearance between the plastic tubes 1 and / or core elements 9 and / or contact elements 10 in the tube bundle X 1 for winding on the drum and this is determined and limited by the width of the welded closing blades 5 of the tube bundle. Such a play 11 has been indicated in FIG. 1. If FIG. 2, it is evident that it is possible to form a cable bundle 7 in which at least one connecting pipe 3 of the plastic pipes 2 in the cable bundle 7 is welded together from the two closing blades 5 of the bundle of pipe bundles through a seamed seam.

In FIG. 2, a tubular aggregate 13 can be seen whose closure lamellae 5 of the tube bundle have longitudinally extending handling edge beads 12. In FIG. 1 has been shown in dotted lines how the edge regions with the handling edge bosses lie before welding. It is easy to grasp and can be handled easily.

using automatic welding devices. Moreover, FIG. 1 shows that the areas of the closure flaps of the tube bundle with the handling edge flaps 12 which overlap the weld seam 6 have been separated by welding the closure flaps of the tube bundle.

The tube assembly 13 shown in FIG. 7 and 8 is equal. In FIG. 7 and 8, this plane extends vertically. The tube aggregate 13 can be folded into a bundle of cable routing tubes 1, as can be seen in FIG. 9. The tube assembly 13 is in the illustrated form molded by extrusion from a thermoplastic. It consists of cables 2 for conducting cables, connecting bridges 3 and closing blades 5 of the bundle of tubes. The pipe aggregate 13 can be folded onto the bundle 1 of the cable guide pipes 1 when the bridge bridges 3 are deformed and the sealing blades 5 of the pipe bundle are welded.

FIG. 7 and 8, it can be deduced that the sealing lamellae 52 of the tube length have longitudinally extending welding profiles 14 which have a cross-section in the form of a split circle. The arrangement is designed such that the welding profiles 14 in the bundle 1 of the cable guide tubes can be welded to form a uniform weld seam 6 with a reinforcement of the weld. To this extent reference is made to the comparative inspection of FIG. 7 and 8 on the one hand and FIGS. 9 and 10 on the other.

In the embodiment of FIG. 1, the welding profiles 14 have welding surfaces 15. For this purpose, they have a semicircular cross-section. In the bundle X of the cable guide tubes, these welding surfaces 15 can be laid flat against each other and welded. In this sense, reference is made to FIG. 9 and 10. FIG. 8 it can be seen that the welding profiles 14 have partial surfaces 16 which can be joined together in the bundle of the 1 cable guide tubes by forming a weld seam. With this in mind, however, the straight tube assembly 13 can be referred to in FIG. 10 on which

correspond to the eye Fig. 8th Is possible do weld seam 17 which is material 18th

It can be seen that the bundle was then formed, the weld introduced, as a rule, the tube aggregate 13 is formed from the tube aggregate 13 by extruding the tube assembly 7 by extruding the cable bundle 7, for example after calibration. When forming the bundle 7, welding of the welding profiles 14 is carried out. Then, the bundle 1 of the cable guide tubes can be wound onto the drum.

Claims (15)

1 i sizing and disassembling m. 1. A bundle of cable routing pipes, consisting of a plurality of thermoplastic plastic pipes which are joined by means of molded and deformable longitudinally extending connecting bridges and can be deployed to form a straight pipe aggregate with two outer pipes if the outer pipes are extending from the longitudinally extending Tube bundle closing blanks, characterized in that the two tube bundle blades (5) lie opposite each other in the cable guide tube bundle (1) and are welded together by a longitudinally welded seam. Cable routing tube bundle according to claim 1, characterized in that the curves (4) are opposed to one another in the cable routing tube bundle (1) when shaping the closure lamellae (5) of the cable routing tube. Cable routing tube bundle according to claim 1 or 2, characterized in that the connecting webs (2) are shaped to the outer tubes (2) along the connection curves (7) which are diametrically opposed to the forming curves (4) and for the shut-off slats. (5) bundle of tubes. Cable routing tube bundle according to one of Claims 1 to 3, characterized in that the longitudinally extending weld seam (6) is formed on the sealing strips (5) of the tube bundle as a contact weld seam with mutually opposed edge regions (8). closing blades (5) 2 of the tube bundle. Cable routing tube bundle according to one of Claims 1 to 4, characterized in that the plastic tubes (2) are laid in the middle of the cable routing tube bundle (1) with welded core elements (9) and / or elements (10) of the bearing surface and are stabilized by the core elements (9) and / or the bearing surface elements (10) as well as by the welded closing lamellas (5) of the tube bundle. 6. Bundle of tubes on the vedeni e cable by one from metal 1 to 5; on the hear c 1 s and t that between plastic pipes (2) and / a1ebo elements (9) core and / a1ebo contact elements (10) is in beam (1) pipes for leadership The clearance (11) for the winding drum formed by the cables and this clearance (11) is determined and limited by the welded closing lamellas (5) of the tube bundle. Cable routing tube bundle according to one of Claims 1 to 6, characterized in that at least one connecting pipe (3) of the plastic tubes (2) in the tube bundle is welded from two closing bundle fins (5) of the tube bundle by means of a sutured seam. Cable routing tube bundle according to one of Claims 1 to 6, characterized in that the sealing strips (5) of the tube bundle have a weld seam (6) formed as a reinforced seam, which is formed by surface welding of two partially reinforced welding profiles (14). ) when shaped to the edges of the sealing strips (5) of the tube bundle with pre-formed welding surfaces (15). A cable guide tube bundle according to claim 8, characterized in that a welding metal is inserted between the welding surfaces (15) of the welding profiles (14) welded to form the reinforced weld (6). A cable guide tube bundle according to claim 9, characterized in that an intermediate weld metal (18) is arranged in the weld seam (17), which is shaped to the welding profiles (14). 11 or Method for manufacturing a cable bundle according to one of Claims 1 to 10, in which, in one manufacturing plant, a flat pipe aggregate is extruded from the plastic tubes of the connecting bridges with the closing blades of the bundle by means of a screw screw for plastics. and wherein the pipe aggregate is assembled together in a production line in connection with extrusion extrusion continuously depending on extrusion extrusion speed, to a bundle of conduit tubes and then directly welded continuously according to extrusion speed Pressing of the clamping lamellae of the tube bundle. 12, in which the straight tube aggregate with tube closure lamellae is pressed by extrusion, wherein the tube tube closure lamellas exhibit longitudinally extending edge reinforcement handling, and the tube tube closure lamellae regions with manipulation edge thickenings are thickened by means of the edge seams, by welding the sealing strips of the tube bundle. The method of claim 11 t , in which the stacking lamellas of the tube bundle are laid flat on top of each other when folding the tube aggregate and a contact weld seam is formed thereafter or thereafter 13th Method according to one of the claims Method according to one of claims 11 or 12, in which the straight aggregate with the closing blades of the tube bundle is - by extrusion, whereby the sealing strips of the bundle of tubes have longitudinally extending partially longitudinally at their edges 2-shielded welding machines with pre-formed welding surfaces, and in which the welding profiles are continuously welded as a function of speed Method according to claim 14, in which, during the welding of the forming profiles, a shaping metal is added additionally between the welding surfaces. List of reference numbers bundle 1 tubes 2 connecting bridge 3 fitting curve and 4 sealing lamellas 5 seam 6 connection curve 7, sealing lamella area 8 core elements 9 contact elements 10 clearance 11 edge bead 12 tube assembly 13 welding profile 14 welding surface 15 partial surfaces Welding seam 17 welding material 18