WO2009030661A1 - Method and tool for the production of an insulating material part for a switching pole - Google Patents

Abstract

The invention relates to a method and a tool for the production of an insulating material part, particularly of a switching pole housing (4) made of a firm insulating material for a switching pole for a high-voltage network by means of a shaping tool (1), comprising at least two shaping modules (1.1, 1.2) having mold halves (2.1, 2.2) forming the outer contour of the switching pole housing (4) to be produced. According to the invention, associated adapter modules (3.1 to 3.n) are inserted into, or removed from, the mold halves (2.1, 2.2) as a function of the housing variation of the switching pole housing (4) to be produced for the purpose of adjusting the interior geometry of the interior mold of the shaping tool (1) to the outer geometry of the switching pole housing (4).

Description

description

Method and tool for producing a Isolierstoff ^¬ part for a switching pole

The invention relates to a method for producing a Isolierstoffteils, in particular a Schaltpolgehäuses for a switching pole specified in the preamble of claim 1. Art. Furthermore, the invention relates to a tool for producing a Isolierstoffteils specified in the upper ^¬ concept of claim 8 Art.

A conventional switching pole is z. As described in US 5729888, wherein the switching device in Schaltpolgehäuse, which is designed as Isolierstoffteil, a vacuum switching ^¬ tube is. This vacuum interrupter is mounted in an upper hollow ^¬ chamber of standing in the assembled state arranged Schaltpolgehäuses, the fixed contact side is above and the Bewegkontaktseite down. On the fixed contact side of the fixed contact of the vacuum interrupter is conductively connected to an input terminal which is coaxial with the central longitudinal axis of the Schaltpolgehäuses and protrudes with a serving for line connection threaded piece from the upper end of the housing. At the lower end protrudes from the vacuum interrupter, a guide tube which is coupled to the movable contact of the interrupter and a central opening in a cup-shaped collecting ring of a side protruding from the housing outgoing connector ^¬ sets. The moving contact is connected under axial coupling with an insulated switching rod, which is constantly connected in the upper end region in a conductive manner with the outgoing connecting piece. To turn on or off the interrupter, the shift rod z. B. by a cam mechanism up or down, the contacts of the vacuum interrupter tube are pressed or moved apart. For continuous monitoring of the switching state or the operation, a current sensor and a voltage sensor are arranged on the switching pole housing. The annular current sensor encloses the input terminal and is thus arranged in the upper end of the Schaltpolgehäuses. In contrast, the rod-shaped voltage sensor is integrated below the laterally arranged in the central region of the Schaltpolgehäuses Abgangsan- closing piece in the pipe wall, which limits the lower length of the hollow chamber at its periphery.

In addition, other different types of switching poles with integrated sensors are known. In this case, these switching poles each associated, solid-insulated Schaltpolgehäuse with one or more integrated current and voltage sensors and various types of connections. Typically, the switching pole are in shaping tools, ^¬ example, a casting, spraying or die produced which are complex and costly due to their volume, and of the complex structures. In this case, a corresponding shaping tool is required in each case for the ^different housing variants. Ie. In housings with integrated sensors, an associated and corresponding housing-form-dependent tool is required for the various combinations of sensor elements and the resulting different switching pole housing variants. For example, a switch pole housing having conventional sensor configurations from a current sensor to a feeder terminal, a current and voltage sensor to a feeder terminal, a current and two voltage sensors, of which a current and voltage sensor at a feeder terminal and a voltage sensor at an input terminal is arranged, or to be able to realize each a current and voltage sensor at an input port, a separate shaping tool is necessary per version. Especially for Schaltpolgehäusevarianten with small quantities are due to the high tooling costs this very expensive.

Furthermore, it is known to use a tool with contours ver ^¬ each provide a current and voltage sensor at the bottom terminal. The possible variants, z. B. no sensor, a current sensor, a voltage sensor or both sensors, realized by the use of dummy shaping parts, which correspond to the outer contours of the sensors. The disadvantage here is that the outer housing contour of the Schaltpolgehäuses thus not from the outside

Schaltpolvariante is to be considered. In addition, the use of materials for a fully populated variant is always required. Due to such a high use of materials, internal mechanical stresses can occur in the housing. Further, a resultant additional material over ^¬ gangsfuge leads to field strength problems.

The invention is therefore an object of the invention to provide a method for producing a Isolierstoffteils, in particular a Schaltpolgehäuses specified in the preamble of claim 1 species, which is simple and inexpensive. In addition, a particularly suitable shaping ^¬ tool specify specified in the preamble of claim 8 way.

The solution to this problem arises from the features of patent claims 1 and 8.

Advantageous embodiments of the invention are the subject of the dependent claims.

In the inventive method for producing an insulating part, in particular a Schaltpolgehäuses of solid insulating material for a switching pole for a high-voltage network by means of an inner mold having a forming tool, comprising at least two Formge ^¬ advertising modules with an outer contour of the manufactured switching ^¬ pole housing forming mold halves, are in this Form halves depending on a manufactured housing variant of the Schaltpolgehäuses associated adapter modules or Formein ^¬ sets for adapting the internal geometry of the mold formed from the two mold halves to the outer geometry of the switching ^¬ polgehäuses used or removed. As a result, a single, uniform in the basic structure, but contour variable shaping tool is made possible by the Schaltpolgehäuse can be manufactured in different housing variants. Each switch is device / Schaltpolgehäusevariante from the outside clearly recognizable ^¬ bar. In addition, only the amount of material required for this variant is set for each Schaltpolgehäusevariante ^¬ . Furthermore, it is ensured that the Schaltpolgehäuse is manufactured with substantially the same wall thickness, whereby internal stresses in the Schaltpolgehäuse be avoided. In addition, special, to be manufactured in small quantities switching pole housing can be produced inexpensively and easily in only one forming tool for different Schaltpolgehäusevarian- th.

Preferably, the inner shape of the forming tool has an inner contour corresponding to an outer basic contour of several or different variants of Schaltpolgehäusen. To this end the form in multiple or all housing ^¬ variant matching contours areas a corresponding inner contour and for not matching contours areas a to the largest contour area off against-fitted inner contour area, so that the adapter modules are simple and safe to use.

The respective adapter module preferably has an adapter inner shape or adapter inner contour corresponding to at least one part contour of the switching pole housing. For example, at least one of the adapter modules as an adapter ^¬ inner contour to a contour sensor. Thus, different sensor variants and contours can be integrated in a simple manner in the Schaltpolgehäuse. Furthermore, at least one of the adapter modules can have a connection contour as an adapter inner contour. As a result, various types of connections can be realized, which, due to the construction of the adapter module and its use in the basic module, can also be clearly understood from the outside when the switching pole housing is manufactured with respect to the type and structure are identifiable. As a result, the switching device variant or the Schaltpolgehäusevariante is clearly recognizable in a simple manner from the outside. In other words: The adapter modules used are not dummy-shaping modules.

In a next production step, after insertion of the respective adapter modules, a molding material is supplied via at least one feed device. Preferably, a thermoplastic or thermoset casting, injection ^¬ or a molding material is used as a molding material.

With respect to the forming tool, the object is OF INVENTION ^¬ dung achieved, according to that associated adapter modules for adapting the internal geometry of the mold formed of the mold halves can be inserted to the outer geometry of the switching pole or removably in the form halves in dependence from the manufactured housing type of the switching pole. In this case, the shaping modules (also called basic modules) and the adapter modules are designed such that the switching pole housing is produced with a wall thickness that remains as constant as possible. A wall thickness of the switching pole housing which is as uniform as possible with a raised embedding of sensors and optionally sensor lines has an advantageous effect on the material consumption during the production of the housing. In addition, the heat dissipation can be done without problems with strong heat load of Schaltpols.

Further expedient embodiments and advantages of the invention düng will become apparent from the following description of an embodiment with reference to the figures of drawing ^¬ calculations, with corresponding components are provided with the same reference numerals.

In the drawings show:

1 and 2 each have a shaping module of a

Shaping tool with in the shaping modules usable, sensor and connection contours having adapter modules in exploded view,

3 and 4 an embodiment of a formed with the forming tool according to Figures 1 and 2 Schaltpolgehäuses in different perspective oblique views,

5 and 6 show another embodiment of the forming tool with alternative usable in the shaping modules, sensor and terminal contours having adapter modules in exploded view,

7 and 8 an embodiment of a with the

Shaping tool according to Figures 5 and 6 molded Schaltpolgehäuses in various perspective views,

Fig. 9 to 12 two further embodiments of a

Shaping tool with alternative usable in the Formge ^¬ advertising modules, terminal contours having adapter modules in exploded view, and

Fig. 13 and 14 by means of the forming tool according to Figures 9 to 12 shaped switching pole housing in perspective oblique views.

1 and 2 each show a forming module 1.1 and 1.2 of a forming tool 1. The forming tool 1 is, for example, a casting, pressing or casting tool, wherein the forming modules 1.1 and 1.2 are formed as tool shells or halves, each with associated half of the mold 2.1 or 2.2 , Also, the forming tool 1 may be formed of more than two shaping modules 1.1 and 1.2.

In the assembled, not shown state of the forming tool 1 form the two mold halves 2.1 and 2.2 inside the forming tool 1, an inner mold as a cavity with a corresponding inner contour for producing a shaped body, such as a Isolierstoffteils with its outer contours. To form an inner cavity in the insulating part, a core can be introduced into the cavity or the inner shape of the forming tool 1 (not shown in detail). Subsequently, in the form of an ^¬ particular liquid molding material, for. As a casting, spraying or pressing material, via at least one dining device, not shown, z. B. at least one feed channel, filled ^¬ . The liquid molding material then cures to the shaped body optionally under thermal stress. In this case, the shaped body or the Isolierstoffteil one of the inner contour of the mold and optionally the introduced core corresponding outer contour or inner contour.

In the inventive forming tool 1 2.1 and 2.2, one or more adapter modules 3.1 to 3.n or mold inserts are in the respective shaping module 1.1 and 1.2, in particular in the mold halves can be used, which (called fundamental or basic contour), the inner contour of the ^¬ put together quantity from the forming modules Restrict or change the form 1.1 and 1.2. Here, the internal or basic contour, ie the internal geometry or dimensions, of the

Shaping tool 1 chosen such that possible for a mold type a variety of moldings variants of this type can be produced in a single forming tool by the respective molds variants corresponding adapter modules 3.1 to 3.n can be inserted or removed in the mold halves 2.1 and 2.2. In this case, the inner basic contour of the forming tool 1 is selected such that it already has an inner base contour region corresponding to this outer contour region of the shaped body in the outer contour regions of the shaped body matching for all variants. In contour areas with different shapes for different mold variants contours, z. B. for connections or integrated parts, has the Basic contour of the forming tool 1 preferably largely rectangular recesses into which the adapter modules 3.1 to 3.n are simple and flat introduced without it can lead to tilting, for example due to protruding contours. The adapter inner contour then corresponds to the desired outer contour of the relevant molding variant. To form an inner cavity in the module module manufactured by means of the associated adapter module 3.1 to 3.n, a core can be introduced into the cavity of the relevant adapter module 3.1 to 3.n (not shown in detail).

In the embodiment according to Figures 1 and 2, a Schaltpolgehäuse 4 is produced by pressing, casting or injection molding in the relevant forming tool 1 as a molded body or insulating part, which is shown in Figures 3 and 4 in different perspective views.

The switching pole housing 4 is provided for receiving a switching pole, not shown, which is to serve as a switching point in a conventional medium or high voltage network. In the embodiment of Figures 1 to 4, the Schaltpol ^¬ housing 4 serves to receive a so-called recloser switching pole, which can be realized with various integrated sensor arrangements.

The switching pole housing 4 is made of solid insulating material and is z. B. cast from synthetic resin. This switching pole housing 2 has an overall tubular design and has at least one connection region 4.1 and at least one sensor region 4.2. In addition, the Schaltpolgehäuse 2 webs 4.3 and reinforcing ribs 4.4.

To implement the various integrated sensor arrangements of the switching pole, appropriate adapter modules 3.1 to 3.n can be inserted into the respective shaping ^module 1.1 and 1.2. In this case, the insertable adapter modules 3.1 to 3.n have at least one part contour of the Schaltpolgehäuses 4 corresponding adapter inner contour 3.1.1 to 3.nl on. For example, the adapter modules 3.1 and 3.6 each have an adapter inner contour 3.1.1 or 3.6.1 a part contour, in particular a connection contour for a connection region 4.1. As an associated adapter inner contour 3.2.1, the adapter module 3.2 has a connection contour, in particular for a housing web. The adapter modules 3.3 to 3.5, as associated adapter inner contours 3.3.1 to 3.5.1, have sensor contours or other predetermined housing contours.

Thus, it is possible with only a single forming tool 1 with a variety of usable adapter modules 3.1 to 3.n to realize a variety of different variants of a Schaltpolgehäuses 4 with one or more input side or outgoing side arranged sensor arrangements and various connections.

Figures 5 and 6 show another embodiment of the forming tool 1 with alternative in the form ^¬ gebungsmodule 1.1 to 1.2 usable and sensor and connection contours having adapter modules 3.1 to 3.6 in an exploded view. FIGS. 7 and 8 show the switching pole housing 4 formed by this forming tool 1 in various perspective oblique views.

Figures 9 to 12 show two further embodiments of a further alternative forming tool 1 for producing an isolated poles having Schaltpol- housing 4 with corresponding alternative insertable into the bung Formge ^¬ module 1.1 and 1.2 adapter modules 3.1 and 3.2, in an exploded view. Figures 13 and 14 show the means of this further shaping tool 1 according to Figures 9 to 12 shaped switching pole housing 4 in perspective views. LIST OF REFERENCE NUMBERS

1 forming tool 1.1, 1.2 forming modules 2.1, 2.2 mold halves

3.1 to 3.n Adapter modules 3.1.1 to 3.n.l Adapter inner contour 4 Switching pole housing 4.1 Connection area 4.2 Sensor area

4.3 Footbridges

4.4 Reinforcing ribs

Claims

claims 1. A process for producing an insulating part, in particular a Schaltpolgehäuses (4) made of solid insulating material for a switching pole, preferably for a Medium or high-voltage network, by means of a shaping tool (1) having an inner shape, comprising at least two shaping modules (1.1, 1.2) with an outer contour of the Schaltpolgehäuses (4) forming mold halves (2.1, 2.2), characterized in that in the mold halves (2.1 , 2.2) depending on a housing variant of the Schaltpolgehäuses (4) corresponding adapter modules (3.1 to 3.n) for adjusting the inner geometry of the inner mold to the outer geometry of the Schaltpolgehäuses (4) are inserted or removed. 2. The method according to claim 1, characterized in that the inner shape of the forming tool (1) has an inner contour corresponding to an outer base contour of all variants of a type of insulating material parts. 3. The method according to claim 1 or 2, characterized in that the respective adapter module (3.1 to 3.n) has an adapter inner contour (3.1.1 to 3.n.l) corresponding to at least one part contour of the insulating part. 4. Method according to one of claims 1 to 3, characterized in that at least one of the adapter modules (3.1 to 3.n) has a sensor contour as adapter inner contour (3.1.1 to 3.n.l). 5. The method according to any one of claims 1 to 4, characterized in that at least one of the adapter modules (3.1 to 3.n) as Adapter inner contour (3.1.1 to 3.nl) has a connection contour. 6. The method according to one of claims 1 to 5, characterized in that after insertion of the respective adapter modules (3.1 to 3.n) a molding material is supplied via at least one feed device. 7. The method according to claim 6, wherein a thermoplastic or duroplastic material is used as the molding material Casting, spraying or pressing material is used. 8. forming tool (1) for producing a Isolierstoffteils, in particular a Schaltpolgehäuses (4) made of solid insulating material for a switching pole, preferably for a medium or high voltage network, comprising at least two shaping modules (1.1, 1.2) with an outer contour of the manufactured Schaltpolgehäuses (4) forming mold halves (2.1, 2.2), characterized in that in the mold halves (2.1, 2.2), depending on a housing variant of a type of switching pole housings (4), associated adapter modules (3.1 to 3.n) for adapting the internal geometry of the internal shape of the forming tool (1) to the external geometry of the switch pole housing ( 4) can be used or removed. 9. Forming tool according to claim 8, characterized in that the inner shape of the forming tool (1) has an inner contour corresponding to an outer basic contour of all variants of Schaltpolgehäusen (4). 10. Forming tool according to claim 8 or 9, characterized in that the respective adapter module (3.1 to 3.n) at least one a part contour of the Schaltpolgehäuses (4) corresponding / n adapter inner contour (3.1.1 to 3.nl). 11. The forming tool according to claim 8, wherein at least one of the adapter modules (3.1 to 3.n) has a sensor contour as an adapter inner contour (3.1.1 to 3.n.l). 12. The forming tool according to claim 8, wherein at least one of the adapter modules (3.1 to 3.n) has a connection contour as an adapter inner contour (3.1.1 to 3.n.l). 13. Forming tool according to one of claims 8 to 12, in that a molded material can be supplied via at least one feed device after insertion of the relevant adapter modules (3.1 to 3.n). 14. Forming tool according to claim 13, characterized in that a thermoplastic or thermosetting casting, spraying or pressing material can be supplied as molding material.