CN1042322A - The injection device of cold horizontal type die-casting facility - Google Patents
The injection device of cold horizontal type die-casting facility Download PDFInfo
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- CN1042322A CN1042322A CN 88107533 CN88107533A CN1042322A CN 1042322 A CN1042322 A CN 1042322A CN 88107533 CN88107533 CN 88107533 CN 88107533 A CN88107533 A CN 88107533A CN 1042322 A CN1042322 A CN 1042322A
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Abstract
The present invention is the injection device that a kind of metal die-casting equipment is used, it comprises that one has the injection chamber and the injection punch head that can slide and rotate of feeding through hole in injection chamber, the drift front portion has upper and lower each an auxiliary feed well and balancing slit vertically, and they respectively limit an auxiliary flow and equal baric flow road with the injection chamber inwall.Molten metal pours into injection chamber from the feeding through hole through auxiliary flow, can drain air in the injection chamber, makes die casting pore very few (or pore-free).This invention is simple in structure, and the raising quality of die casting produces effects very apparent, easy to utilize, and is significant to improving die casting equipment and technology.
Description
The present invention relates to the injection device that a kind of metal casting machine particularly uses in the non-ferrous metal cold horizontal type die-casting facility.
Non-ferrous metal compression casting is a kind of be suitable for making any surface finish, accurate in size part and higher precision casting technology of productivity ratio, in recent years, has obtained rapidly development, as the die casting total output of Japan last year near 600,000 tons.Yet, die casting contains a large amount of pores, obviously reduced part quality, not only reduced its mechanical strength (hardness, stretch-proof, shock resistance and percentage elongation etc.), and be difficult to it is heat-treated, so just limited the use of die casting in heavy duty, high temperature, field such as withstand voltage and airtight.Thereby, manage to get rid of the pore in the die casting, promptly how to solve the exhausting problem in the extrusion process, cause concern both domestic and external, and made many effort for this reason, obtained certain effect.For example, a kind of pore-free die casting technology is arranged, the air with in the oxygen displacement die-casting system makes oxygen become metal oxide with the symphysis of non-ferrous metal (as aluminium) fluidization, thereby reduces the pore in the foundry goods.But, this technology cost height, the chemical combination of oxygen and metal liquid is insufficient, and personal safety is had threat.Also have a kind of semisolid die casting (or claiming liquid forging) technology, its principle is that molten metal is poured in the die cavity, when treating that molten metal is half curdled appearance, with the punch pressurization, thereby obtains few (nothing) blow casting.Yet this technology can only be cast the part of simple shape, and production efficiency is very low, thereby has also limited its popularization.In addition, on vacuum die casting process, obtained gratifying progress abroad, in the Chinese invention patent (CN87102218) as the application of Japanese Daiwa Industry Co., Ltd., a kind of vacuum die-casting method and die casting equipment thereof are disclosed, this invention utilizes the duct in the die casting pattern to improve pumpage greatly dexterously, enable to obtain almost 100% vacuum, thereby make imperforate die casting.Yet, also make this kind die casting equipment become complicated, and need evacuating equipment and additional control appliance, increased equipment expense.
The gas source that infiltrates in the analysis die casting is mainly from the following aspects: the gas in (1) mold cavity.By the appropriate design running gate system, control metal fluidised form, the realization program is filled, and creates good several means such as exhaust conditions such as slit, can solve this problem on the one hand; (2) air-breathing in the molten metal.Can use the exhaust of refining degasifier; (3) gas of die casting releasing agent (coating) generation.Can select the coating that gas forming amount is little, release property is good for use, or etc. matched moulds die casting again after the coating volatilization; (4) gas in the injection chamber.Show according to statistics: this part air capacity accounts for the 1/2-3/4 of the contained air total amount of system.So far, only there are Switzerland and Japan to propose effective solution in the world.Switzerland BUHLER company proposes a kind of parabola, and injection system (PARASHOT) (Swiss Patent 578904) is discharged the gas in the injection chamber in order with its one-level injection speed that does not have turbulent flow.Its loading time is controlled automatically, and the die casting parameter is adjusted with numeral, and Time Created is short and do not have a discrete pressure charging system of pressure spike.This equipment is than before advanced person no doubt, but the control appliance complexity; Because change and fluctuation that technological parameter causes make that virtual condition and perfect condition are variant, thereby influence exhaust effect; This apparatus expensive as domestic old equipment is reequiped, also is subjected to the restriction of base components (electronic devices and components and hydraulic valve etc.) reliability, therefore, is not suitable for China's national situation.In addition, Co., Ltd. of Ube Industries Ltd. has developed a kind of vertical injection device.It is on original UB350 G type die casting machine basis, the bottom between the machine tool mould installing zone with injection oil cylinder and whole hydraulic control component dislocations, and be positioned at underground, also feeding device has been done improvement.This equipment must be with injection chamber to moving down when die casting, yet rotate to outside the machine body reinforcedly, reset, injection, thereby action is many again, and the cycle is long, and mechanism's complexity also will heat injection chamber, and consumed energy is more.In a word, the purpose of above-mentioned two kinds of up-to-date prior arts all is to get rid of the gas in the injection chamber, yet for it and essential improvement amount is bigger, unsuitable large-scale popularization is used.
, the objective of the invention is to for this reason, but utilize this device die casting to go out the foundry goods of few (nothing) pore for existing old-fashioned cold horizontal type die-casting facility provides a kind of simple in structure, easy to operate injection device.
Comprise an injection chamber according to injection device of the present invention, it is fixedly installed in quiet mould of die casting and the quiet plate of die casting, and the position has a feeding through hole above the end outside it stretches out quiet plate; Comprise that also its rear portion is one can be free to slide vertically and rotate and keep the cylinder that is sealed and matched with the injection chamber inwall around axis in injection chamber, and its front portion be one from the cylinder front end begin radially at interval on two positions of 180 ° diameter diminish gradually, horizontal plane by its rear portion cylinder axis is the injection punch head of asymmetrical elongated ligulate bar relatively, in ligulate bar part, along its directly upwards tripping penetrate on the entire axial length of a chamber interior walls side farthest and offer at least one auxiliary feed well, be limited with one between this groove and the injection chamber inwall molten metal sent into from the feeding through hole, enter the auxiliary flow of injection chamber through it.
In addition,, also offer a balancing slit in the entire axial length of the side relative on its ligulate bar part, be limited with an equal pressure passageway between this groove and the injection chamber inwall with auxiliary feed well by the injection punch head of injection device of the present invention.
Below, by to the structure of implementing embodiment shown in the drawings of the present invention and the description of characteristics, will help understanding to content of the present invention.
Fig. 1 be the expression embodiments of the invention structure and with the axial cutaway view of the relation of adjacent elements;
Fig. 2 and Fig. 3 are respectively the transverse sectional view along " A-A " among Fig. 1 and " B-B "; With
Fig. 4 is the fragmentary axial cross-section that the expression embodiments of the invention are installed in the situation on the die casting equipment.
As shown in Figure 1, flake hole is arranged on the left side of the quiet plate 8 of a kind of die casting of cold horizontal type die-casting facility, concentric and what connect the quiet plate 8 of die casting is that a diameter is cheated little slotted hole than flake with this hole.In described flake hole of communicating with each other and slotted hole, plug-in mounting is gone into cylindric injection chambers 9 that firmly are connected with the quiet plate of die casting 8, and make its right-hand member stretch out the right side of the quiet plate 8 of die casting, the periphery in its left side then cooperates with round tube hole on the quiet mould 7 of a die casting securely, and its left side just flushes with the left side of the quiet mould 7 of die casting.One flange is arranged on the periphery of injection chamber 9, and its left and right side ring surface is respectively near the right side of the quiet mould 7 of die casting and the bottom surface, flake hole of the quiet plate 8 of die casting.Between quiet mould 7 of die casting and the quiet plate 8 of die casting is fixedly connected, and the quiet plate 8 of die casting is firmly secured on the basis of die casting equipment (referring to Fig. 4), thereby the quiet mould 7 of die casting also is fixed motionless.So injection chamber 9 can not gone here and there vertically under the axial force effect.In addition, on the top that injection chamber 9 stretches out the right side periphery outside the quiet plate 8 of die casting, offered a circular or square feeding through hole, this through hole is communicated with injection chamber 9 inner chambers, and the feeding through hole can be circulated into molten metal in the injection chamber 9 thus.
In injection chamber 9, axially slidably reach around its axis along it injection punch head 10 is housed rotationally, its rear portion is one can be free to slide vertically in injection chamber 9 and rotate and keep the cylinder that is sealed and matched with injection chamber 9 inwalls around its axis, and its front portion is one to begin cross section from rear portion cylinder front end and diminish gradually, horizontal plane by its rear portion cylinder axis is asymmetrical elongated ligulate bar relatively, promptly as shown in Figure 1 in the drift ligulate bar of the position part, be positioned at towards the top of a side of injection chamber feeding through hole, bottom compared with the ligulate bar of a side opposite with this side is significantly little, so, be asymmetric shape with respect to horizontal plane by the cylindrical axis in injection punch head rear portion.Like this, make the top of ligulate bar part want far away from the inwall of injection chamber, also the space that is promptly limited between the two wants big, otherwise more closely, also promptly the space of qualification is littler between the two from the inwall of injection chamber 9 in ligulate bar bottom partly.In addition, on these two quilts were pruned the total length on upper and lower surface of a part, respectively offered a groove: the groove depth that the top is offered was a little, and the groove that the below is offered is more shallow, is called respectively and assists feed well and balancing slit (shown in Fig. 2,3).Wherein auxiliary feed well is along laterally being less than the feeding through hole along horizontal width (as shown in Figure 3) on horizontal plane at the width on the horizontal plane.Be limited with an auxiliary flow between the inwall of described auxiliary feed well and injection chamber 9, in like manner, be limited with an equal pressure passageway between described balancing slit and injection chamber 9 inwalls.After molten metal pours into from the feeding through hole, just flow into injection chamber 9 along auxiliary flow, flow into again in the equal pressure passageway.Balancing slit is set and corresponding all benefits of pressure passageway are, when pushing away before the injection punch head 10,, makes them before injection chamber 9 axis and then be unlikely on the inwall of being partial to injection chamber 9 to play a dynamic balance.
Now operation principle after cold horizontal type die-casting facility uses this embodiment of the present invention is described with Fig. 4.As shown in Figure 4, earlier die casting dynamic model 5, the quiet mould 7 of die casting are contained in respectively on moving plate 3 of die casting and the quiet plate 8 of die casting.Advance clamping 1, dynamic model 5 and quiet mould 7 are closed up.At this moment, the bale-out molten metal pours into the feeding through hole, and it is too not fast to irritate liquid speed, may hinder the contrary liquid stream of part air in the injection chamber to pour direction into and discharge from the feeding through hole along described accessory channel with unlikely, is as the criterion and cause molten metal to splash.After treating that molten metal is filled injection chamber 9, the spanner embedding mouth of injection rod 11 front portions by connecting injection punch head 10 rotates certain angle with injection punch head 10 with injection rod 11, make the auxiliary feed well that fills with molten metal miss the feeding through hole, splash and injure operating personnel in order to avoid molten metal when drift 10 is penetrated in preceding pushing, may occur.After filling molten metal, the air in the injection chamber is except that on a small quantity from the feeding through hole is discharged, and major part die cavity 6 is not drained from auxiliary exhaust road (drawing the figure).Make injection oil cylinder 13 work then,, drive injection rod 11, injection punch head 10 is pushed ahead, the molten metal in the injection chamber 9 is pushed in the die cavity 6 by shaft coupling 12.After treating that molten metal is frozen into die casting, start clamping 1 mould 5 and 7 is opened.Then, knockout cylinder 2 work are released foundry goods 6 by push piece plate 4.So far, finished a working cycles, about 0.5-1.5 of its cycle minute/every mould (it is big or small and different to look die casting equipment tonnage and foundry goods).Treat injection punch head 10 is rotated back into the home position with injection rod 11 with respect to shaft coupling 12, even after the auxiliary feed well on the injection punch head 10 is aimed at the feeding through hole, can carry out the compacting work of the new foundry goods of following one-period again.
Advantage of the present invention is fairly obvious, and it can be drained the air that accounts in the die-casting system in the injection chamber of whole 1/2-3/4 of air contents basically, and die casting goes out the die casting of few (nothing) pore. The inventor utilizes the present invention to suppress Al-alloy bicycle square tube at 125 tons of cold horizontal type die-casting machines of J113 Type B, foundry goods qualification rate after heat treatment is not (wherein discard mainly also causes because there are the factors such as the lubricating of direct relation, die-casting die exhaust and temperature fluctuation with the present invention) more than 80%, and traditional casting die foundry goods qualification rate after heat treatment only is 20%, and visual effects is obvious. In addition, the present invention is simple in structure, and is easy to operate, and have the average those skilled in the art of being familiar with and all can implement the present invention, so, very be convenient to promote, to improving die casting equipment and technology, it is significant to improve quality of die casting.
Claims (3)
1, a kind of injection device that is used on the cold horizontal type die-casting facility, comprise that one is fixedly installed in the quiet mould 7 of die casting and the quiet plate 8 of die casting of die casting equipment, the position has the injection chamber 9 of a feeding through hole above the end outside it stretches out quiet plate 8, it is characterized in that also comprising that its rear portion is one can be free to slide vertically and rotate and keep the cylinder that is sealed and matched with described injection chamber 9 inwalls around its axis in described injection chamber 9, and its front portion is one to begin the mode cross section from rear portion cylinder front end and diminish gradually, horizontal plane by its rear portion cylinder axis is the injection punch head 10 of asymmetrical elongated ligulate bar relatively; Described ligulate bar part directly upwards offers at least one auxiliary feed well at it on the entire axial length of described injection chamber 9 an inwalls side farthest, limit an auxiliary flow between the inwall of described auxiliary feed well and described injection chamber 9.
2, injection device as claimed in claim 1, it is characterized in that offering a balancing slit in the entire axial length of the side relative on the ligulate bar part of described injection punch head 10, be limited with an equal pressure passageway between described balancing slit and described injection chamber 9 inwalls with described auxiliary feed well.
3, injection device as claimed in claim 1, it is characterized in that on the described injection chamber 9 the feeding through hole along laterally at the width on the horizontal plane greater than the auxiliary feed well on the described injection punch head 10 along its horizontal width on horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107533 CN1042322A (en) | 1988-10-29 | 1988-10-29 | The injection device of cold horizontal type die-casting facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107533 CN1042322A (en) | 1988-10-29 | 1988-10-29 | The injection device of cold horizontal type die-casting facility |
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| Publication Number | Publication Date |
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| CN1042322A true CN1042322A (en) | 1990-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 88107533 Pending CN1042322A (en) | 1988-10-29 | 1988-10-29 | The injection device of cold horizontal type die-casting facility |
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| CN (1) | CN1042322A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398231C (en) * | 2004-03-05 | 2008-07-02 | 张山根 | Long-life high-efficiency die-casting punching head |
| CN101700566B (en) * | 2009-11-25 | 2011-09-07 | 北京有色金属研究总院 | Press chamber for rheological die-casting and die-casting method |
| CN103817308A (en) * | 2014-02-21 | 2014-05-28 | 广东鸿图科技股份有限公司 | Punch for high-vacuum die casting and lubrication device for punch |
| CN103878339A (en) * | 2014-04-03 | 2014-06-25 | 东莞台一盈拓科技股份有限公司 | Die-casting technology and die-casting machine for amorphous alloy |
| US10829403B2 (en) | 2010-08-12 | 2020-11-10 | Corning Incorporated | Treatment of silica based soot or an article made of silica based soot |
-
1988
- 1988-10-29 CN CN 88107533 patent/CN1042322A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398231C (en) * | 2004-03-05 | 2008-07-02 | 张山根 | Long-life high-efficiency die-casting punching head |
| CN101700566B (en) * | 2009-11-25 | 2011-09-07 | 北京有色金属研究总院 | Press chamber for rheological die-casting and die-casting method |
| US10829403B2 (en) | 2010-08-12 | 2020-11-10 | Corning Incorporated | Treatment of silica based soot or an article made of silica based soot |
| CN103817308A (en) * | 2014-02-21 | 2014-05-28 | 广东鸿图科技股份有限公司 | Punch for high-vacuum die casting and lubrication device for punch |
| CN103817308B (en) * | 2014-02-21 | 2016-01-20 | 广东鸿图科技股份有限公司 | A kind of high vacuum die casting drift and the lubricating arrangement for this drift |
| CN103878339A (en) * | 2014-04-03 | 2014-06-25 | 东莞台一盈拓科技股份有限公司 | Die-casting technology and die-casting machine for amorphous alloy |
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