DE102008049990B4 - Storage device and method for manufacturing a storage device - Google Patents

Abstract

Storage device (1), comprising a storage container (2) with connection elements (3) and fastening elements (4), characterized in that the storage container (2) is formed from one or more connected extruded parts, wherein the connection elements (3) arranged on at least one extruded part ) and fastening elements (4) are a homogeneous molded part formed together with the extruded part during an extrusion molding process, wherein the fastening elements (4) are directed axially inwards and / or outwards.

Description

The The invention relates to memory devices according to the preamble of the claims 1 and 2 and a method of manufacturing such memory devices according to the generic term of claim 12.

Out It is well known in the art that memory devices, in particular pressure accumulator, comprise a storage container, which consists of several deep-drawn parts and / or tubes is formed. The deep-drawn parts and / or pipes are by means of different joining techniques, like welding, Soldering or Bonding process, interconnected. Furthermore, the memory devices often have connection elements, such as threads and / or valves and fasteners on which as additional Components by means of different joining techniques, in which it is also, for example, welding, soldering or gluing process, on the storage container are attached.

adversely is, however, that at joints between the deep-drawn parts and / or pipes or formed from these storage container and the connecting elements leaks can occur and the joints often have a low mechanical strength, so that a whereabouts of the media to be stored, such as gases or liquids, not in the storage container is ensured. Furthermore, the attachment of the connection elements requires and the fasteners on the storage container of the prior art time, cost and material consuming Operations.

Furthermore, from the DE 10 2006 051 376 A1 a pressure vessel and method for its manufacture, wherein a container wall of the pressure vessel is formed from a preform by cylinder spinning rolls in at least two overflows. In a first overflow a wall thickness reduction of not less than 40% and in a second overflow a wall thickness reduction of not less than 70% are realized. In this case, the preform is optionally made of a block by the hot forming process Rückwärtsnapffließpressen, from a sheet metal blank by deep drawing or by pressing or from a pipe, the bottom is drawn and closed without additional material. A tapered portion of the container, in which an opening comes to rest, is formed by drawing from a reduced portion of the pressure vessel wall, at least in the second overflow, for example by cylinder pressure rollers.

Also the DE 10 2005 010 282 B3 discloses a pressure vessel, wherein the pressure vessel is a compressed gas source with fuel gas filling. The compressed gas source comprises an integrally extruded metal container made of aluminum, a discharge opening for vaporized fuel gases and a filling with a liquid aliphatic hydrocarbon. The metal container is formed of aluminum with a purity of at least 95 wt .-% and a wall thickness between 0.6 and 1.5 mm and has a bursting pressure between 40 and 80 bar. An outer diameter of the cylinder portion is between 70 and 120 mm. The metal container has a cylinder portion and a dome-shaped neck portion, in the axis of which a removal valve is arranged, wherein the neck portion is designed for attachment of a gas burner.

Of the The invention is therefore based on the object storage devices specify which is characterized by a simple structure, high stability and lasting Distinguish tightness. The invention is still the task underlying, a method of manufacturing the memory devices indicate which a small time, cost and material costs allows.

Regarding the storage devices, the object is achieved by the invention in the claims 1 or 2 specified characteristics solved. Regarding the procedure The object is achieved by the features specified in claim 12 solved.

advantageous Embodiments of the invention are the subject of the dependent claims.

The Storage device comprising a storage container with connection elements and fasteners, characterized according to the invention thereby from that the storage tank from one or more extrusions is formed, wherein arranged on at least one extruded part connecting elements and fasteners together with the extruded part while an extrusion process are formed homogeneous molding. Through this formation of the storage container from a or more extrusions results in a profitable way that this no joints or at least a small number of these and thus has a high mechanical strength. Furthermore, there is a particular advantage of the together with at least one extruded part trained connection elements and fasteners, as well no joints between them are present, resulting in a single homogeneous molding with a high strength and a simple construction results.

The storage container, the connection elements and the fastening elements are formed from the same material. The material is plastic or metal, in particular aluminum, wel It is particularly suitable for processing by means of an extrusion molding process.

According to different Further developments of the device according to the invention, the storage container is particularly preferably a circular cylinder, wherein the connection elements and / or Fasteners on a front side, on a lateral surface and / or on a side opposite the front side are arranged. Due to this arrangement, a variety of connection and holding or mounting options feasible and the storage device is to a variety of applications customizable. Alternatively to the formation of the storage container as Circular cylinders are further training, such as as Cuboid, possible.

Around a further adaptation of the storage device to various types Applications and bays to achieve, are the connecting elements and / or fasteners optionally in the axial and / or radial direction to the outside and / or to directed inside.

In In one embodiment of the invention, the connecting elements are valve connections, threaded bolts, Holes with internal thread, closable inlet openings and / or outlet openings, so that there are numerous connection options.

at the fastening elements are in particular bearing elements, Bolts, tenons, retaining plates, tabs and / or depressions, wherein the recesses are formed such that these in to these engage corresponding counterparts.

According to one Particularly profitable development of the invention is in the field the connection elements and / or fasteners a wall thickness of storage container thickened and thus mechanically stable, since these areas during a Installation of the storage device, for example on media lines, and while the operation, for example, due to vibration, heavily loaded could be.

by virtue of high mechanical stability and Resilience, the precise Manufacturing and easy to ensure a tightness is suitable the storage device in particular as a pressure accumulator or as a storage container.

at the method according to the invention for producing a storage device, comprising a storage container with Connecting elements and fasteners, the storage tank is made one or more extrusions produced in an extrusion process formed, wherein the connection elements and fasteners in the extrusion process as a homogeneous mold part together with at least one extruded part be formed. This method is particularly advantageous saves material and time and thus enables cost-effective production the storage device. The memory device manufactured by this method is characterized by a high strength and a special surface quality. Further Advantages of the method are low tool costs, high Tool life, a high working speed and thus a big one potential to be delivered.

There the connection elements and fasteners in the extrusion process together with the storage tank be made as a molded part, resulting in more profitable As a storage device, a homogeneous component with a high Tightness.

Farther can In a particularly advantageous manner, areas of the storage container, in which arranged the connection elements and / or fasteners are while of the extrusion process be made such that this thickened wall thickness and thus have a particularly high mechanical stability.

In a particularly advantageous embodiment of the method according to the invention a thickened wall thickness is produced in a limited area of the storage container, wherein the connection elements and / or fastening elements in a Zerspanverfahren generated in these areas. In the Zerspanverfahren can it is, for example, an insertion of a hole, a or applying a thread or similar operations act. This is in a profitable manner after the preparation of the storage container a Adaptation to different applications and thus increased use of equal parts possible.

embodiments The invention will be explained in more detail below with reference to drawings.

In this demonstrate:

1 schematically a perspective view of a memory device according to the prior art,

2A 1 schematically shows a perspective view of a storage device, wherein a connection element is arranged centrally in an end face and directed outward,

2 B schematically the Speicherervorrich according to 2A in a plan view of the front side,

2C schematically the memory device according to 2 B in a sectional view,

3A 1 schematically a perspective view of a storage device, wherein a fastening element designed as a bearing element is arranged eccentrically in an end face,

3B schematically the memory device according to 3A in a plan view of the front side,

3C schematically the memory device according to 3B in a sectional view,

4A 1 is a schematic plan view of an end face of a storage device with inwardly directed connection elements,

4B schematically the memory device according to 4A in a sectional view,

5A schematically a first embodiment of an outwardly directed connection element,

5B schematically a second embodiment of an outwardly directed connection element,

5C schematically a third embodiment of an outwardly directed connection element,

6A FIG. 2 schematically a top view of a storage device with outwardly directed fastening elements, FIG.

6B schematically the memory device according to 6A in a sectional view,

7A 1 is a schematic plan view of a storage device with a round depression introduced into a storage container;

7B schematically the memory device according to 7A in a sectional view,

7C schematically a triangular shape of the recess according to 7A .

7D schematically a hexagonal shape of the recess according to 7A .

7E schematically a quadrangular shape of the recess according to 7A .

8A 1 schematically a perspective view of a storage device, wherein a fastening element formed as a tab is arranged eccentrically in an end face,

8B schematically a sectional view of the memory device according to 8A .

8C schematically a plan view of the end face of the storage device according to 8A .

9A FIG. 2 is a schematic plan view of a storage device with a round pin arranged on a storage container, FIG.

9B schematically the memory device according to 9A in a sectional view,

9C schematically a triangular shape of the pin according to 9A .

9D schematically a hexagonal shape of the pin according to 9A .

9E schematically a square shape of the pin according to 9A .

each other corresponding parts are in all figures with the same reference numerals Mistake.

In 1 is a storage device 1 according to the prior art, which is designed as a pressure accumulator represented. The storage device 1 from a circular cylindrical storage tank 2 and one on the front side 2.1 arranged, outwardly directed connection element 3 is formed.

The lateral surface 2.2 of the storage container 2 is a rolled sheet, the abutting edges are connected to each other by means of a weld S1.

The front side 2.1 and one of the front side 2.1 opposite side 2.3 are punched from a sheet metal components, which are each connected by means of a radially extending weld S2 and S3 cohesively with the lateral surface.

At the connection element 3 it is a prefabricated component, which also with reference to another, the connection element completely circumferential weld S4 to the front page 2.1 of the storage container 2 is connected.

A disadvantage of the illustrated storage device 1 is, however, that at joints, ie at the welds S1 to S4, between the lateral surface 2.2 and the front side 2.1 , this opposite side 2.3 and between the front side 2.1 and the connection element 3 Leaks may occur and these joints often have low mechanical strength, so that a whereabouts of the media to be stored, such as gases, Liquids or solids in the storage container 2 is not ensured. Furthermore, the production of the welds S1 to S4 time, cost and material consuming.

The 2A . 2 B and 2C schematically show a storage device 1 in different views, the storage device 1 from a circular cylindrical storage tank 2 and one on the front side 2.1 arranged, outwardly directed connection element 3 is formed.

The storage tank 2 is formed from two extruded parts, which according to the invention in an extrusion process together with that in the front side 2.1 arranged connection element 3 be formed. Both Fließpressteile are interconnected by means of a single weld S, resulting in a high stability and tightness of the storage container 2 results. In extrusion molding is a cold forming process for the production of hollow or solid bodies. In this case, a compact starting material is either similar to the extruding with a punch through a so-called die, which is the later form of the storage container 2 pretends, pressed or the stamp is pressed into the starting material and the material flows backwards along the stamp. Thus, the Fließpressteile each form a part without joints, resulting in the great mechanical stability and high density.

Of the special advantage of this method is that even items with complex shapes quickly, cost-effectively and with a high quality are.

The connection element 3 is a valve which is provided to a connection of a media line. The medium may be, for example, liquids, gases or solids which are stored in the storage device, which is preferably designed as an accumulator or storage container 1 are storable.

To ensure high mechanical stability of the entire storage device 1 to achieve and ensure absolute tightness are the storage tank 2 and the connection element 3 as a, in the extrusion process jointly manufactured Fließpressteil formed. This process of manufacturing the storage container 2 is shortened and simplified due to a reduced number of workstations and operations in a particularly advantageous manner, so that a cost reduction can be achieved. Furthermore form the storage container 2 and the connection element 3 a homogeneous molding, so that there are no stability-reducing joints between them.

In a non-illustrated embodiment of the invention, the connection elements 3 additionally or alternatively on a lateral surface 2.1 of the storage container 2 arranged.

The 3A . 3B and 3C schematically show a storage device 1 in different views, the storage device 1 from a circular cylindrical storage tank 2 and one on the front side 2.1 arranged eccentrically, designed as a bearing element fastener 4 is formed, wherein the fastening element 4 directed axially outwards. This fastener 4 is to a mounting of the storage device 1 for example, provided in a technical facility.

In the illustrated embodiment, a particularly advantageous embodiment of the storage device 1 shown in which this and the fastener 4 are formed as a single molded part produced together in the extrusion process and have no joints in a profitable manner, so that the mechanical strength is further increased and the tightness is ensured.

In a non-illustrated embodiment of the invention, the fasteners 4 as well as the connection elements 3 additionally or alternatively on a lateral surface 2.1 of the storage container 2 arranged radially outwardly or inwardly, wherein the storage unit 1 several connection elements 3 and / or fasteners 4 may include.

Another alternative is in the 4A and 4B shown, wherein in limited areas B1 and B2 of the storage container 2 a thickened wall thickness is generated and the connecting elements 3 and / or fasteners 4 be produced in a Zerspanverfahren in these areas B1 and B2.

The Zerspanverfahren may be, for example, an introduction of a bore BO1, BO2, so that the illustrated connection elements 3 can be generated. By means of the illustrated connection elements 3 and to these corresponding adapter are in particular not shown media lines with the storage device 1 coupled.

In non-illustrated embodiments of the invention further Zerspanverfahren such. As a thread or applying a thread, a milling, turning and / or grinding, applied to the connection elements 3 and / or the fastening elements 4 to create.

According to the 5A . 5B and 5C are different embodiments of an axially outward, in the end face 2.1 the storage container arranged connection element 3 which, in turn, during the extrusion process together with the storage container 2 is completely and finally formed or alternatively based on a thickened wall thickness in limited areas B1 of the storage container 2 and subsequent introduction of bores BO3, BO4, BO5 and further Zerspanverfahren is generated.

It shows the 5A in particular a connection element 3 , which is coupled via a non-illustrated to this corresponding adapter with a likewise not shown media line. Such a connection element 3 is also known as a quick coupling.

The 5B and 5C In contrast, each show a connection element 3 in various embodiments, to which a media line, in particular a flexible hose, can be connected directly and without an adapter. In this case, the connection element 3 in both embodiments, means which prevent an independent release of the media line.

The 6A and 6B show a storage device 1 with axially outward, in the front side 2.1 of the storage container 2 arranged fastening elements 4 in different representations, with the fasteners 4 like those in the 4A . 4B and 4C illustrated and described connection elements 3 as during the extrusion process together with the storage container 2 be fully and finally molded or alternatively based on the thickened wall thickness in limited areas B1 and B2 of the storage container 2 and subsequent introduction of holes BO6, BO7 and other Zerspanverfahren be generated.

The 7A and 7B make a storage device 1 with a fastener 4 which is considered in the storage container 2 introduced round depression is formed. This recess is in the storage tank during the extrusion process 2 brought in.

Alternatively, such depressions become an adaptation of the shape of the memory unit 1 to an installation environment in the front side 2.1 and / or lateral surface 2.2 of the storage container 2 brought in.

The 7A . 7B and 7C show further embodiments of the designed as wells fasteners 4 , which are triangular, hexagonal or square executed. There are also other forms conceivable, with the fasteners 4 to a secure stop of the storage device 1 engage in counterparts corresponding to these not shown.

The 8A . 8B and 8C show an additional advantageous embodiment of the storage device 1 with a fastening element designed as a tab 4 , This in turn is common with the storage container 3 produced during the flow drawing process, in which case a bore BO8 is introduced in a subsequent step in the tab.

The 9A and 9B make a storage device 1 with a fastener 4 which is designed as a round pin. Again, the fastener 4 together with the storage tank 3 produced during the flow drawing process.

The fastener designed as a pin 4 Alternatively, the in the 9C . 9D and 9E have shown triangular, hexagonal or quadrangular and other non-illustrated forms, wherein the pin to a mounting of the storage device 1 engages in a corresponding to this corresponding unspecified counterpart.

1

storage device

2

storage container

2.1

front

2.2

lateral surface

2.3

page

3

connecting element

4

fastener

B1

Area

B2

Area

BO1 to BO8

drilling

S

Weld

S1 to S4

Weld

Claims (14)

Storage device ( 1 ), comprising a storage container ( 2 ) with connecting elements ( 3 ) and fasteners ( 4 ), characterized in that the storage container ( 2 ) is formed from one or more connected extruded parts, wherein the connecting elements arranged on at least one extruded part ( 3 ) and fasteners ( 4 ) are a homogeneous molded part formed together with the extruded part during an extrusion molding process, wherein the fastening elements ( 4 ) are directed axially inwardly and / or outwardly. Storage device ( 1 ), comprising a storage container ( 2 ) with a connection element ( 3 ) and a fastener ( 4 ), characterized in that the storage container ( 2 ) is formed from one or more connected extruded parts, wherein the at least one extrusion element arranged connecting element ( 3 ) and the fastening element ( 4 ) are a homogeneous molded part formed together with the extruded part during an extrusion molding process, wherein the fastening element ( 4 ) is directed axially inwardly and / or outwardly, wherein the fastener ( 4 ) is a bearing element, a bolt, a pin, a holding plate, a tab and / or a recess, wherein the recess is formed such that it for a secure hold of the storage device ( 1 ) engages in a corresponding counterpart to this. Storage device ( 1 ) according to claim 2, characterized in that the depression are triangular, hexagonal or square. Storage device ( 1 ) according to one of the preceding claims, characterized in that the storage container ( 2 ) is a circular cylinder. Storage device ( 1 ) according to one of the preceding claims, characterized in that the connection elements ( 3 ) and fasteners ( 4 ) on a front side ( 2.1 ), on a lateral surface ( 2.2 ) and / or on one of the front side ( 2.1 ) opposite side ( 2.3 ) are arranged. Storage device ( 1 ) according to one of the preceding claims, characterized in that the connecting element ( 3 ) or the connecting elements ( 3 ) are directed in the axial and / or radial direction outwards and / or inwards. Storage device ( 1 ) according to one of the preceding claims, characterized in that the connection elements ( 3 ) Valve connections, threaded bolts, female threaded holes, male threaded pins, closable inlet ports and / or outlet ports. Storage device ( 1 ) according to one of claims 1 or 4 to 7, characterized in that the fastening elements ( 4 ) Bearing elements, bolts, pins, retaining plates, tabs and / or depressions are, wherein the recesses are formed such that they engage in counterpart corresponding to these. Storage device ( 1 ) according to one of claims 1 to 8, characterized in that in the region of the connecting elements ( 3 ) and fasteners ( 4 ) a wall thickness of the storage container ( 2 ) is thickened. Storage device ( 1 ) according to one of the preceding claims, characterized in that the material is plastic or metal, in particular aluminum. Storage device ( 1 ) according to one of claims 1 to 9, characterized in that the storage device ( 1 ) is an accumulator or a reservoir. Method for producing a memory device ( 1 ) according to at least one of the preceding claims, comprising a storage container ( 2 ) with at least one connecting element ( 3 ) and at least one fastening element ( 4 ), characterized in that the storage container ( 2 ) is formed from one or more extrusions produced in an extrusion process, wherein the at least one connection element ( 3 ) and the at least one fastening element ( 4 ) are formed in the extrusion process as a homogeneous molding together with a flow press, wherein the at least one fastener ( 4 ) is directed axially inwardly and / or outwardly. A method according to claim 12, characterized in that in the region of the at least one connecting element ( 3 ) and / or the at least one fastening element ( 4 ) a thickened wall thickness of the storage container ( 2 ) is produced. A method according to claim 12 or 13, characterized in that in a limited area (B1, B2) of the storage container ( 2 ) a thickened wall thickness is produced, wherein the at least one connecting element ( 3 ) and / or the at least one fastening element ( 4 ) are produced in a machining process in these areas (B1, B2).