• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a mandrel element for an aluminum extruder. The mandrel element is adapted to form a hollow aluminum extrusion profile together with a die member of the aluminum extruder in an aluminum extrusion process. The mandrel includes a base portion and a core portion spaced therefrom. The core part is located downstream of the base part, at least in a state placed in the aluminum extruder. The core portion includes a die rim that defines an inner rim of the aluminum extrusion profile. According to the invention, the core part is fixedly connected to the base part by means of a soldering process.
    公开号:BE1022024B1
    申请号:E2013/0550
    申请日:2013-08-23
    公开日:2016-02-04
    发明作者:Gerardus Joseph Maria Smits
    申请人:Adex B.V.；
    IPC主号:
    专利说明:

    Door element for an aluminum extrusion device, and method for manufacturing it.
    Description
    The invention relates to a through-flow element for an aluminum extrusion device, wherein the through-flow element is adapted to form together with a mold member of the aluminum extrusion device in an aluminum extrusion process a hollow extrusion profile from aluminum or an alloy thereof, wherein the through-flow element comprises a base part and a remote part core part thereof comprises that, at least in a state placed in the aluminum extrusion device, is situated downstream of the base part, wherein the core part comprises a mold edge (bearing) which defines an inner edge of the aluminum extrusion profile.
    By aluminum extruder is meant an extruder suitable for extruding aluminum or alloys thereof, for forming an extrusion profile from aluminum or an alloy thereof.
    Such a continuous element (also called mandrel) is generally known. The through-flow element is used in an aluminum extrusion device for forming hollow extrusion profiles from aluminum or an alloy thereof. The extruder comprises a mold through which an amount of flowable material such as aluminum or an alloy thereof is pressed or pressed. The mold determines the final shape of the formed profile. The hollow aluminum extrusion profile, viewed in an axial section, has an internally located edge (inside of the profile) and an externally located edge (outside of the profile). To form a hollow profile, therefore, two mold parts are required, a first part (mold member) for defining the peripheral edge of the profile, and a second part (mandrel) for defining the inner edge of the profile.
    The material to be pressed is aluminum or an alloy thereof. A pre-heated aluminum block, which can consist of different alloys, is pressed through the steel mold with high pressure. This allows temperatures to rise to 700 degrees Celsius, with a force of up to 600 N per mm 2. This places high demands on the extruder.
    It is a drawback of the known through-element that it is relatively difficult to manufacture. High demands are made on the accuracy of the through-flow element. For some geometries only manual work is sufficient, which makes the known flow element relatively expensive.
    It is therefore an object of the present invention to provide a flow-through element of the type mentioned in the preamble which can be manufactured relatively simply and cheaply, preferably mechanically, without compromising the required accuracy and function.
    To this end, the invention provides a through-element, characterized in that the core part is fixedly connected to the base part by means of a soldering process. According to the invention, the through-flow element is made from at least two separate parts. The two separate parts can be manufactured and processed independently of each other. The accessibility for machining of smaller, individual parts is generally good, so that machine techniques can be used, and therefore no or at least less manual work is required. After the complete manufacture and processing of the individual parts, they can be connected to each other in a relatively simple manner by means of a soldering process, to form an integral through-flow element. The through-flow element according to the invention is thus relatively easy to manufacture, wherein accuracy and reproducibility are guaranteed, whereby the object of the invention is achieved.
    It is particularly advantageous if the flow element is composed of at least two separate parts, the separate parts being made of different material. It is conceivable that ceramics are used for one or more of the components. It is furthermore conceivable that steels are used.
    In one embodiment, the through-flow element comprises feed openings formed in the base part (feeder ports). The material to be extruded can reach the die through these feed openings.
    The through-flow element preferably comprises a rejuvenation part or narrowing part, which is formed by fixedly connected ends of the base part and the core part. This rejuvenation part can be designed particularly well by processing the ends of the base part and / or the core part, such that it runs out, for example, taper or taper. When machining a complete flow element, as is customary according to the prior art, applying such a narrowing or rejuvenation is relatively difficult, and in many cases even impossible mechanically.
    It is preferable if the through-flow element is designed by means of a soldering process, for example in the form of a brazing process or vacuum soldering process.
    It is otherwise conceivable that the through-flow element comprises a base part and a plurality of core parts. The core parts can each be individually designed and machined. It is conceivable that the core parts consist of one or more different materials. It is also conceivable that the one or more core parts are provided with a protective layer and / or a different coating. It is possible that the base part is provided with the same or different protective layer and / or different coating.
    According to an aspect of the invention, there is provided a method for manufacturing a through-element for an aluminum extrusion device for forming a hollow aluminum extrusion profile in an aluminum extrusion process. The method comprises the steps of: • providing a base part and an associated core part; and • firmly connecting the core part and the base part to each other by means of a soldering process, so as to form the through-element, preferably as already described above.
    As already indicated above, it hereby becomes possible to process the core part and the base part separately. This allows machine techniques to be applied to a large extent. The transition between the core part and the base part can also be designed particularly well, because the ends of the core part and the base part can be machined accurately and quickly. This makes it possible to manufacture the flow element quickly and accurately and reproducibly in a surprisingly simple manner.
    It is noted here that it is known in the art to design the through-flow element with exchangeable core parts. Interchangeability requires the use of releasable fastening elements in the form of bolts and / or screws and associated holes. However, such a construction is relatively complex, and certainly not suitable for all geometries of core parts.
    According to the invention, it is possible that the method comprises the step of processing the base part before joining the step of joining. Additionally or alternatively, the method may include the step of processing the core member prior to the joining step. Individual machining of the base part and the core part enables a fast and accurate production of the through-flow element.
    In one embodiment, the machining of the core part and / or of the base part comprises the provision of a narrowing or rejuvenation. In a particularly simple embodiment, this comprises tapering an end of the core part and / or the base part.
    As already mentioned, the soldering process can be a brazing process or vacuum soldering process. It is conceivable that when connecting a plurality of core parts to one or more basic parts, different techniques are applied.
    The invention will be explained in more detail below with reference to the description of a preferred embodiment of an extruder with a doom element according to the invention, with reference to the following figures. Show here:
    FIG. 1 - a schematic overview of the extrusion process;
    FIG. 2a - 2d - views of an extruder with a through-flow element according to the present invention;
    FIG. 3a - 3c - views of a through-element according to the present invention.
    FIG. 1 shows a schematic overview of the aluminum extrusion process. In the extrusion process, a quantity of flowable material 3 (billet), in this case aluminum or an alloy thereof, is pressed or pushed through a mold 1 (die), in the direction of arrow A. The mold 1 comprises a mold opening 4 which is formed in such a way is that the flowable material 1 pressed through the mold 1 is formed into a profile 5.
    FIG. 2a shows a detail of an aluminum extruder 11 with a through-flow element 12 (mandrel) according to the present invention. The aluminum extrusion device 11 is suitable for forming hollow profiles therewith. The flowable material (billet, not shown) in the form of aluminum or an alloy thereof flows through the device in the direction of arrow A. In this case it passes successively (from left to right) a so-called lead plate 18, the through-flow element 12, a mold member 15 and the so-called backer 19. Such an arrangement of an aluminum extrusion device 11 is known per se to a person skilled in the art.
    As can be better seen in FIG. 2b, which shows a view of the through-flow element 12, the through-flow element 12 comprises a base part 13, in which supply openings 33 for the flowable material are formed. Located more downstream of the base part (see also Fig. 2a) is the core part 23. In the embodiment shown in Figs. 2b, two core parts are visible.
    The core part 23 is, as appears from FIG. 2a, aligned at the level of the mold member 15, such that edges 25 of the mold member 15 and of the core part 23 form a mold edge 25 (bearing 25) with a profile opening, which determines the final shape of the hollow profile to be extruded in the extrusion process.
    FIG. 2c shows a cross-section of a possible extrusion profile that can be formed with the mold member 15 and the flow element 12. The extrusion profile 101 comprises a hollow rectangular profile 102 with an internal support wall 103, whereby two cavities 110 are formed in the profile.
    FIG. 2d shows a section along the line 11D-11D in FIG. 2b, and thus shows a top view of the device shown in FIG. 2a. In particular, it is clear that there are two core parts that are relatively close to each other. A cavity 27 is formed between the two core parts, through which the material can flow.
    The cavities 110 of the formed profile 101 are relatively close to each other. This means that the core parts 23 in FIG. 2b and FIG. 2D also have to be relatively close to each other. In particular, machining the facing parts of the core parts 23 is relatively difficult according to the state of the art, and often requires manual work, which is cumbersome and expensive.
    According to the present invention, the core parts 23 and the base part 13 are manufactured and processed individually, whereafter the one or more core parts 23 are / are connected in a soldering process to the base part 13 to form an integral through-element 12. As an example, here is brazing process or vacuum soldering process, although it is clear to the person skilled in the art that different soldering techniques will be applicable, or even other connection techniques, with which a relatively integral part will be obtained after connection.
    It is particularly advantageous that the core parts 23 and the base part 13 can be made of different materials. The core part 23 may be of a different material than the base part 13. It is possible, for example, to use ceramic or steel. It is also possible to use materials that are relatively difficult to process, whereby first an operation of the separate core parts 23 and base part 13 can take place, after which the parts 13, 23 are integrally connected to each other.
    FIG. 3a to 3c schematically show the method for manufacturing the flow element according to the present invention. FIG. 3c shows the base part 13, which is provided on a downstream part with a rejuvenation or narrowing 52, which extends tapered outwards. FIG. 3c also shows the core part 23, which also has a narrowing or narrowing 51 on an upstream part. By individually manufacturing the parts and machining, these ends can be designed simply and accurately by machine. The individual parts can also be manufactured from different or the same materials. However, it is advantageous that the invention offers the possibility of using different materials in a simple manner.
    FIG. 3a and 3b show how the base part 13 and the core part 23 are fixedly connected to each other, a connecting seam 40 being formed between the two parts. FIG. 3a shows a top view, corresponding to FIG. 2d. FIG. 3b shows a side view, similar to FIG. 2a. A soldering process is used according to the invention. Preferably, brazing or vacuum soldering is used.
    FIG. 3a and 3b it appears that the narrowing or narrowing is formed at the location of the connecting seam 40. The rejuvenation or narrowing shown here, or even cavity 27 as in FIG. 3a, it is difficult to shape according to the state of the art, where the flow element 12 is an integral part and must be machined as such.
    It will be clear to a person skilled in the art that the invention has been described above on the basis of a number of possible preferred embodiments. However, the invention is not limited to these embodiments. Many possible equivalent modifications are conceivable within the scope of the invention, which possibly fall within the scope of protection of the appended claims.
    权利要求:
    Claims (9)
    [1]
    CONCLUSIONS
    1. A flow element for an aluminum extrusion device, wherein the flow element is adapted to form, together with a mold member of the aluminum extrusion device, an aluminum extrusion profile or an alloy thereof in an aluminum extrusion process, wherein the flow element comprises a base part and a core part at a distance therefrom that, at least in a state placed in the aluminum extrusion device, is situated downstream of the base part, the core part comprising a mold edge defining an inner edge of the aluminum extrusion profile, characterized in that the core part is fixedly connected to the base part by means of a soldering process is.
    [2]
    2. Through-element as claimed in claim 1, wherein the through-element comprises a narrowing or rejuvenation formed by mutually fixed ends of the base part and the core part.
    [3]
    The flow element according to claim 1 or 2, wherein the soldering process is an aluminum brazing process or vacuum soldering process.
    [4]
    Door element according to any of claims 1-3, wherein the core part and / or the base part comprises steel.
    [5]
    5. Method for manufacturing a through-element for an aluminum extrusion device for forming a hollow aluminum extrusion profile in an aluminum extrusion process, the method comprising the steps of: • providing a base part and an associated core part; Fixedly connecting the core part and the base part to each other by means of a soldering process, so as to form the through-element, preferably according to one of the preceding claims.
    [6]
    The method of claim 5, wherein the method comprises the step of processing the base member prior to the connecting step.
    [7]
    Method according to claim 5 or 6, wherein the method comprises the step of processing the core part before joining the step of joining.
    [8]
    A method according to claim 6 or 7, wherein the machining of the core part and / or of the base part comprises applying a rejuvenation or narrowing at one end of the core part and / or at one end of the base part.
    [9]
    The method of any one of claims 5 to 8, wherein the soldering process is a brazing process or vacuum soldering process.
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    同族专利:
    公开号 | 公开日
    ITMI20131406A1|2014-02-24|
    NL2009351C2|2014-02-25|
    DE202013103821U1|2013-11-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2522357C3|1975-05-21|1980-04-24|Hoechst Ag, 6000 Frankfurt|Blow extruder|
    AT372041B|1979-02-08|1983-08-25|Maplan Masch Tech Anlagen|SPRAY HEAD FOR THE PRODUCTION OF HOLLOW PROFILES|
    KR100574183B1|1998-09-25|2006-04-27|스미또모 가가꾸 가부시키가이샤|Blow molding die and process for producing blown film|
    DE29906109U1|1999-04-06|1999-07-22|Austrotool Uk Ltd|Tank plate for a tank of an extrusion tool|
    DE102005026726A1|2004-06-09|2006-12-14|Thermo-Technik-Systeme Gmbh|Extrusion die head for tube shaped plastic perform, has nozzle body supported by clamping rings and operating devices for circumference dependent changes of slit width, where devices have double action hydraulic cylinders and spindle drives|CN104070080B|2014-07-10|2016-03-09|南车株洲电力机车有限公司|A kind of variable cross-section aluminium alloy section extruding die tool|
    CN107377937A|2017-07-31|2017-11-24|广州科技职业技术学院|Bicycle rim multi-hole extrusion die|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2009351A|NL2009351C2|2012-08-23|2012-08-23|THROUGH ELEMENT FOR AN EXTRUSION DEVICE, AND A METHOD FOR MANUFACTURING IT.|
    NL2009351|2012-08-23|
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