CN103521737A - Novel extrusion casting machine - Google Patents
Novel extrusion casting machine Download PDFInfo
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- CN103521737A CN103521737A CN201310426272.3A CN201310426272A CN103521737A CN 103521737 A CN103521737 A CN 103521737A CN 201310426272 A CN201310426272 A CN 201310426272A CN 103521737 A CN103521737 A CN 103521737A
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Abstract
The invention relates to a novel extrusion casting machine. According to the novel extrusion casting machine, huge adjustment and optimization are carried out on the mechanical structure and the hydraulic system of an injection system of extrusion casting machines emerged in modern times. In the injection system aspect, a translation oil cylinder, a charging barrel hoist cylinder, an injection oil cylinder and a swing oil cylinder are arranged, the translation oil cylinder and the swing oil cylinder work in a coordination mode, and a charging barrel and a sprue bush are in driving fit all the time to enable molten metal to be free of leakage. Further, a fast energy accumulator and a differential valve are arranged in the hydraulic system, and an injection process is made to be formed by stable starting, high-speed advancing and high-pressure pulse stepping. Extrusion castings with high shape precision and dense inner parts can be produced through fast extrusion forming and high-pressure extrusion forming, and heat treatment can be carried out on the extrusion castings in follow-up steps.
Description
Technical field
The present invention relates to the extrusion casting machine using in compression casting industry, especially this Novel extrusion casting machine has been broken through the function of conventional extruded casting machine, can be shaped and fill shape with high-pressure extrusion by crushing failure at high speed, produce the extrusion casint part of the interior solid that form accuracy is high.
Background technology
Compression casting technology is widely used in the industries such as defence and military, communications and transportation, 3D shaping and communication handset at present, becomes one of important technology of realizing in advanced manufacturing technology few nothing cutting formation complex parts.But it is obviously not enough that traditional compression casting machinery exists.It is unreasonable that the molten metal of tradition die casting machine is pressed into passage, gate channel becomes vertical distribution with the die joint of die cavity, molten metal enters mold cavity and has eddy current and cause volume gas phenomenon, although be shaped because molten metal enters die cavity at a high speed, but the inside die-casting part impurity of producing is more, but also have the minute bubbles that disperse, die casting cannot carry out subsequent heat treatment, can not, for high temperature occasion, limit in some industries as the application of defence and military industry.Recently, occurred extrusion casting machine, its structure makes molten metal enter mold cavity in the mode leading directly to, and has eliminated eddy current and volume gas phenomenon during molten metal flows; But due to molten metal, to enter die cavity speed low, cannot form the trickle part of extrusion casint part edge tail, and can form inner Shinkage and dispersed porosity at extrusion casint part size larger part, the edge of close extrusion casint part forms cold diaphragm, is still difficult to produce high-quality die casting.
Summary of the invention
The present invention proposes, give full play to traditional die casting machine and modern age extrusion casting machine advantage, overcome the shortcoming of two kinds of compression casting machineries simultaneously, a kind of Novel extrusion casting machine is produced in design, should make the die casting of producing be shaped good, accurate, improve again die casting interior quality, and allow die casting then heat-treating, meet the requirement to die casting increasingly stringent of defence and military and car industry.
The technical scheme that technical solution problem of the present invention adopts is as follows.
Frame for movement and hydraulic system to the extrusion casint machine injection system occurring modern age have been done large adjustment and optimization.Aspect the frame for movement of injection system, be provided with injection mechanism translation oil cylinder, barrel hoist cylinder, drive the injection oil cylinder of barrel inner punch and the oscillating oil cylinder that drives barrel to swing.When outside barrel outwards swings to extrusion casting machine, by soup feeding machine, to barrel, inject molten metal, when barrel is ajusted upright position, barrel hoist cylinder piston rises and makes barrel mouth aim at sprue bush, by control device, adjusted the oscillating quantity of amount of movement and the barrel oscillating oil cylinder of injection mechanism translation oil cylinder piston, translation oil cylinder and oscillating oil cylinder co-ordination, make barrel mouth dock closely sealed with the sprue bush of mold cavity, after preventing in injection process molten metal by the phenomenon of slot leakage between barrel mouth and sprue bush, guarantee that high pressure has enough supplementary metals while filling shape feeding.Meanwhile, in the hydraulic system of carrying out injection work, set up fast energy storage device, in its fluid pressure line, set up different valve, the course of work while having optimized extruding.First by injection oil circuit board to injection oil cylinder fuel feeding, piston in barrel rises and promotes drift, make the molten metal of drift top steadily enter the sprue bush of mould, then open immediately fast energy storage device and different valve, fast energy storage device strengthens injection injection system oil mass with the response speed of Millisecond, different valve makes injection oil cylinder have the normal pressure oil of bar oil pocket to be back to rapidly without bar oil pocket simultaneously, further increased the piston rate of climb, the molten metal of drift top is injected mold cavity by sprue bush at a high speed, make the trickle partially-formed accurately good of die cavity end, and metal has little time partial coagulation and produces without cold diaphragm, while finishing when being shaped, switch immediately different valve, make the bar oil pocket that has of injection oil cylinder connect normal pressure oil-piping, now pressure oil flows and to slow down suddenly and pressure raises suddenly, injection system produces " water hammer " phenomenon, pressure oil promotes piston and the drift of injection oil cylinder in the mode of high-pressure pulsating stepping, molten metal in punch holder sprue bush pushes in squeeze casting body in the mode of pulsation stepping, making the original place that likely forms shrinkage porosite shrinkage cavity obtain molten metal supplements, formation compact texture tissue, be called " filling shape ".Extrusion can be heat-treated follow-up.
Outstanding feature of the present invention and obviously beneficial effect are: (1) has optimized the motion of key component barrel in injection system, in injection process, make barrel and sprue bush closely sealed all the time, make molten metal without leakage all for extrusion molding, guarantee to have enough supplementary molten metals to fill issuable shrinkage porosite shrinkage cavity when filling shape; (2) injection when work shot sleeve piston by smooth starting, advance at utmost speed and three steps of high-voltage pulse stepping form, first piston is shaped by steadily entering die cavity to quick injection by drift extrusion metal liquation, then piston high-pressure pulsating stepping, by drift, make that molten metal in sprue bush is high to be pressed into extrusion to fill shape good, extrusion dense internal organization, can heat-treat follow-up.
Accompanying drawing explanation
Accompanying drawing is Novel extrusion casting machine complete machine structure schematic diagram.Clamping System by a plate 1, moving mold 2, fixed mold 3, in plate 4, thimble oil circuit board 5, thimble oil cylinder 6, bend elbow force-expanding machine structure 7, tailgate 8, locked mode oil circuit board 9, Mode-locking oil cylinder 10 and sprue bush 11 and form; Injection system is comprised of hoist cylinder 12, translation oil cylinder 13, oscillating oil cylinder 15, injection oil cylinder 16 and barrel 17; Hydraulic system is by different valve 14, and fast energy storage device 18, injection oil circuit board 19, pumping plant oil circuit board 20 fuel tanks 21 and Oil pump electrical machinery 22 form.
The specific embodiment
Complete machine is divided into Clamping System, injection system and hydraulic system three parts.
Hydraulic work system, oil pump 22 extracts normal pressure oil from fuel tank 21, after pressurization, through pumping plant oil circuit board 20, controls flow and pressure, and pressure oil is divided into two-way and supplies with respectively injection oil circuit board 19 and locked mode oil circuit board 9.First realize locked mode, locked mode oil circuit board is to Mode-locking oil cylinder 10 back cavity fuel feeding, and the piston of Mode-locking oil cylinder 10 promotes toggle force-expanding machine structure 7, carries out locked mode action, by moving mold 2 and fixed mold 3 lockings.
Injection system work subsequently, oscillating oil cylinder 15 is pushed outwardly to injection oil cylinder by injection oil cylinder 16 together with barrel 17 and tilts to extrusion casting machine left-external side, soup ladle in soup feeding machine injects molten metal to barrel 11, oscillating oil cylinder 15 is ajusted, then translation oil cylinder 13 pistons pull whole injection mechanism, make the mouth of barrel 17 arrive sprue bush 11 belows.Now hoist cylinder 12 rises, and the mouth of barrel 17 enters sprue bush, trace regulate oscillating oil cylinder 15 and translation oil cylinder 13 pistons make barrel mouth and sprue bush closely sealed.After this injection oil cylinder 16 is started working.Injection process is divided into three phases, and the first stage, pumping plant oil circuit board 20 fuel feeding, enter injection oil cylinder 16 back cavities through injection oil circuit board 19, and the piston stroking upward in injection oil cylinder 16 promotes drift and rises, and drift promotes again the molten metal rising in barrel 17.Now flow is little, and speed is slow.Second stage, fast energy storage device 18 is opened, pressure oil enters the back cavity of injection oil cylinder 16 fast, different valve 14 is opened simultaneously, and the oil of injection oil cylinder 16 ante-chambers enters back cavity fast, and back cavity is rodless cavity, utilize the pressure differential of back cavity and ante-chamber, form differentially, the piston in injection oil cylinder 16 moves ahead fast, and drift promotes molten metal and enters fast mold cavities shaped.Phase III, injection approaches terminal, and the piston of shot sleeve 16 moves ahead and is obstructed, and speed is slack-off, close rapidly different valve 14, pressure oil in fast energy storage device 18 flows slack-off suddenly, produces by " water hammer ", and hydraulic oil impacts the drift in barrel in the mode of high-pressure pulsating stepping, make drift to force mode stepping, the molten metal brute force leaving in sprue bush 11 enters foundry goods, makes casting forming fine and close, and the shrinkage cavity shrinkage porosity of foundry goods inside obtains molten metal and supplements in time and disappear.
Finally, clamping system work, moving mold 2 is opened with fixed mold 3,6 oil-feeds of thimble oil cylinder, roof fall shaped casting from die cavity, completes an operation cycle.
The technology of the present invention is applied in the new product of company, obtains good economic and social benefit.
Claims (3)
1. a Novel extrusion casting machine, is characterized in that: complete machine is divided into hydraulic system, Clamping System and injection system.
2. a kind of Novel extrusion casting machine according to claim 1, is characterized in that: injection system frame for movement aspect is provided with injection mechanism translation oil cylinder, barrel hoist cylinder, drives the injection oil cylinder of barrel inner punch and the oscillating oil cylinder that drives barrel to swing.Translation oil cylinder and oscillating oil cylinder co-ordination, make barrel mouth dock closely sealed with the sprue bush of mold cavity.
3. a kind of Novel extrusion casting machine according to claim 1, it is characterized in that: in hydraulic system, set up fast energy storage device, in its fluid pressure line, set up different valve, the course of work while having optimized extruding, shot sleeve piston by smooth starting, advance at utmost speed and three steps of high-voltage pulse stepping form, first piston is shaped by steadily entering die cavity to quick injection by drift extrusion metal liquation, then piston high-voltage pulse stepping, makes the high extrusion that is pressed into of molten metal in sprue bush by drift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426272.3A CN103521737A (en) | 2013-09-18 | 2013-09-18 | Novel extrusion casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426272.3A CN103521737A (en) | 2013-09-18 | 2013-09-18 | Novel extrusion casting machine |
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| Publication Number | Publication Date |
|---|---|
| CN103521737A true CN103521737A (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310426272.3A Pending CN103521737A (en) | 2013-09-18 | 2013-09-18 | Novel extrusion casting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598417A (en) * | 2015-12-25 | 2016-05-25 | 苏州三基铸造装备股份有限公司 | Extruder injection-table lifting device |
-
2013
- 2013-09-18 CN CN201310426272.3A patent/CN103521737A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598417A (en) * | 2015-12-25 | 2016-05-25 | 苏州三基铸造装备股份有限公司 | Extruder injection-table lifting device |
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Application publication date: 20140122 |