CN1565765A

CN1565765A - Method for processing extrusions with high extrusion ratio

Info

Publication number: CN1565765A
Application number: CN 03139609
Authority: CN
Inventors: 庄福良
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-27
Filing date: 2003-06-27
Publication date: 2005-01-19

Abstract

The invention relates to a processing method for an extrusion assembly, specially for an extrusion assembly with high extrusion ratio. The technological process includes the following steps: processing a forming mould, thereby extrusion-forming an extrusion assembly comprising a circular arc base plate and some support plates connected with the circular arc base plate, wherein the support plates are spread in fan shape on the one side of the circular arc base plate; trimming the circular arc base plate to form a plane base plate of the finished product; gathering the support plates to form the support plates of finished product. The process is achieved by using geometry theory. The extrusion assembly with high extrusion ratio can be produced by processing, trimming and gathering the fan-shape distributed support plate.

Description

A kind of processing method of high extrusion ratio extrusion

Technical field:

The present invention relates to the processing method technical field of extrusion, the processing method of refering in particular to a kind of high extrusion ratio extrusion.

Background technology:

Along with the continuous development of science and technology, the arithmetic speed of computer also develops towards faster, more accurate direction.CPU is the core that computer is handled digital information, the good and bad arithmetic speed that directly influences computer of its performance.Yet the CPU service behaviour is stable not only relevant with its inside structure, also is subjected to the influence of external condition.For example when temperature is too high, CPU can't operate as normal, so but in order to guarantee the CPU operate as normal, all be provided with radiator or the fan that is used to lower the temperature usually on it.See accompanying drawing 1, this is the finished product 1 of at present employed a kind of common radiator, and it comprises the support plate 12 that a plane bottom plate 11 and some and plane bottom plate 11 are affixed and be parallel to each other.During use, at first be coated with in the bottom of plane bottom plate 11 and spread silica gel, the radiator that will smear then behind the silica gel is placed on the chip of CPU, and by anchor clamps that radiator and CPU is fastening.CPU is in when work, and the heat of its generation conducts on the radiator, by support plate 12 heat is in time exhaled then.We know that the radiating efficiency of radiator is directly proportional with its surface area, promptly if improve the surface area that its radiating efficiency will increase radiator.In conjunction with this example, it can adopt number that increases support plate or the area dual mode that increases support plate if increase the area of dissipation of radiator.For example by reducing the distance between the support plate 12, thereby increase the number of support plate 12.Perhaps to increase the area that it highly increases support plate 12.But these methods are difficult to implement in production technology.Because radiator generally adopts the processing mode of extrusion modling, promptly by mould with the squeeze wood extrusion modling.As see accompanying drawing 2, this is the mould 3 of extruded heat sinks, is provided with some profiled sheetings 31 in the gap between the corresponding support plate 12 on this mould 3.After squeeze wood is through these mould 3 extruding, will become radiator finished product 1.Must consider an extrusion ratio μ in the process of extrusion modling.In conjunction with this example, μ equals the length b of profiled sheeting 31 and the ratio of its sectional dimension a, and promptly μ equals the length b of profiled sheeting 31 and the ratio b/a of its cross-sectional width.Generally, the value of μ should if it is excessive to should be μ, then following technological problems can occur smaller or equal to 16, and at first the difficulty of processing of mould is bigger, secondly, and the poor rigidity of profiled sheeting 31.When extrusion ratio μ is excessive, in extrusion process, be easy to cause profiled sheeting 31, so at present in processing during this product, general all is controlled at extrusion ratio below 16 owing to rigidity ruptures inadequately.So just hinder us and produced the radiator of high rate of heat dissipation.

Summary of the invention:

Purpose of the present invention just is to overcome the deficiency of existing product, and a kind of processing method of high extrusion ratio extrusion is provided.

The present invention is achieved through the following technical solutions: it comprises following two steps:

1), at first process a mould, utilize mould extrusion modling one extrusion, this extrusion comprises a circular arc base plate and support plate some and that the circular arc base plate is affixed, and support plate is the side that the fan beam shape launched and be evenly distributed on the circular arc base plate;

2), then, extrusion is processed into finished product, its method is; With circular arc base plate leveling, make it become plane bottom plate in the finished product, support plate tightens, draws close the support plate that becomes in the finished product mutually.

This processing method is utilized geometry principle, and the principle of launching by a kind of similar folding fan realizes.Be about to the support plate that the fan beam shape distributes that is that the very little support plate in gap in the existing product changes into after the expansion and process, again with the extrusion leveling purse up that launches, like this can't the excessive extrusion difficult problem of directly production extrusion ratio with regard to successfully having overcome.The present invention is skillfully constructed, and has solved by simple method to be difficult to the technical barrier that overcomes at present.

Description of drawings:

The present invention is further illustrated below in conjunction with accompanying drawing:

Fig. 1 is the stereogram of radiator finished product;

Fig. 2 is a cutaway view of producing the mould of radiator finished product at present;

The stereogram of the extrusion that Fig. 3 is among the present invention to be processed;

Fig. 4 is the cutaway view of the mould of the extrusion of processing among the present invention;

The embodiment two of the extrusion that Fig. 5 is among the present invention to be processed;

The embodiment three of the extrusion that Fig. 6 is among the present invention to be processed;

Fig. 7 is a principle schematic of the present invention.

The specific embodiment:

The present invention is mainly used in the bigger extrusion of processing extrusion ratio, and these extrusions should comprise following feature: it comprises a plane bottom plate and some support plates, wherein support plate is parallel to each other, and the height of support plate and its be distance bigger in gap between the two, and promptly this ratio should be more than or equal to 12.

Seeing accompanying

drawing

1,2,3, is that example is specifically described the present invention with processing heat radiator finished product 1 below.Finished product 1 comprises a plane bottom plate 11 and some support plates 12, and wherein support plate 12 is parallel to each other, and the gap is less between the support plate 12, and in the present embodiment, its value is about 2mm, and the height of support plate is about 30～50mm.This finished product 1 is by the directly extrusion modling of present mode.

The present invention includes following two steps:

1), at first processes a mould 4, utilize mould 4 extrusion modlings one extrusion 2, this extrusion 2 comprises a circular arc base plate 21 and support plate 22 some and that the circular arc base plate is affixed, and support plate 22 is the side that the fan beam shape launched and be evenly distributed on circular arc base plate 21.

2), then, extrusion 2 is processed into finished product 1, its method is: with circular arc base plate 21 leveling, make it become plane bottom plate 11 in the finished product 1, support plate 22 tightens, draws close the support plate 12 that becomes in the finished product 1 mutually.

We talk about the front, must consider an extrusion ratio μ in the process of extrusion modling.In conjunction with this example, μ equals the length b of profiled sheeting 31 and the ratio b/a of its cross-sectional width b.And if μ is excessive, the difficulty of processing that mould then can occur is big, the problems such as poor rigidity of profiled sheeting 31.But these problems can't occur when we process extrusion 2, see accompanying drawing 4, this is the mould 4 of processing extrusion 2, because extrusion 2 is with respect to finished product 1, it is the fan beam shape with all support plates 22 along circular arc base plate 21 and launches, so the distance between the relative support plate 12 of the distance between the support plate 22 increases manyly, and the gap between the support plate 22 is over against the profiled sheeting 41 of answering mould 4, so profiled sheeting 41 can not occur the excessive situation of extrusion ratio man-hour during extrusion 2 adding.After extrusion 2 machine-shapings, by other devices circular arc base plate 21 is flattened again, will obtain finished product 1 like this.See accompanying drawing 7, in the process of leveling, the gap in the extrusion 2 between the support plate 22 will dwindle simultaneously, reaches the distance of support plate 12 in the finished product 1 at last.

The present invention adds distance, the number of support plate 12 and the size of base plate 11 of taking an examination man-hour between the worry support plate 12, rationally processes extrusion 2.As see accompanying drawing 5,6, extrusion 5,6 the finished products here with regard to corresponding different size.

This processing method is utilized geometry principle, and the principle of launching by a kind of similar folding fan realizes.Be about to the very little support plate 12 in gap in the existing product and change into the support plate 22 that is fan-shaped distribution after the expansion and process, again with the extrusion 2 leveling purse ups that launch, like this can't the excessive extrusion of directly production extrusion ratio with regard to successfully having overcome.The present invention is skillfully constructed, and has solved by simple method to be difficult to the technical barrier that overcomes at present.

Claims

1, a kind of processing method of high extrusion ratio extrusion, the finished product of this extrusion (1) comprises a plane bottom plate (11), and some affixed support plates (12) thereon, and the height of support plate (12) and its be distance bigger in gap between the two, and it is characterized in that: this method comprises following two steps:

1), at first processes a mould (4), utilize mould (4) extrusion modling one extrusion (2), this extrusion (2) comprises a circular arc base plate (21) and support plate (22) some and that the circular arc base plate is affixed, and support plate (22) is the side that the fan beam shape launched and be evenly distributed on circular arc base plate (21);

2), then, extrusion (2) is processed into finished product (1), its method is: with circular arc base plate (21) leveling, make it become plane bottom plate (11) in the finished product (1), support plate (22) tightens, draws close the support plate (12) that becomes in the finished product (1) mutually.

2, the processing method of a kind of high extrusion ratio extrusion according to claim 1 is characterized in that: the support plate (12) in the finished product (1) is parallel to each other, and it is vertical with plane bottom plate (11).

3, the processing method of a kind of high extrusion ratio extrusion according to claim 1 is characterized in that: the height of described support plate (12) with its between the two the ratio of the distance in gap for more than or equal to 12.