CN102205407B - One-way valve injection device for die casting machine - Google Patents
One-way valve injection device for die casting machine Download PDFInfo
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- CN102205407B CN102205407B CN 201110098598 CN201110098598A CN102205407B CN 102205407 B CN102205407 B CN 102205407B CN 201110098598 CN201110098598 CN 201110098598 CN 201110098598 A CN201110098598 A CN 201110098598A CN 102205407 B CN102205407 B CN 102205407B
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Abstract
The invention relates to a one-way valve injection device for a die casting machine, which comprises an injection cylinder, an injection piston, a pressurizing piston and a pressurizing valve plate, wherein the injection piston, the pressurizing piston and the pressurizing valve plate are arranged in the injection cylinder; the pressurizing valve plate is provided with a first valve hole and a second valve hole, the pressurizing piston is arranged in the first valve hole and is matched with the first valve hole in a dynamic sealing manner, the injection cylinder is connected with the first valve hole of the pressurizing valve plate in a sealing manner, a one-way valve is arranged between the injection piston and the pressurizing piston, one end of the one-way valve is arranged in the injection cylinder and is matched with the injection cylinder in a dynamic sealing manner, the other end of the one-way valve is fixedly connected with the pressurizing piston, and the second valve hole is communicated with an oil inlet of the one-way valve. Compared with a floating piston, the one-way valve injection device operates stably and reliably; the problem of instable speed when advanced pressurizing and stroke control pressurizing under a pressure control condition can be solved; and stroke or time control can be realized and pressing time is shortened through pressurization, thus the one-way valve injection device can adapt to the requirement for the traditional high-end die casting within larger range.
Description
Technical field
The present invention relates to die casting machine parts technical field, especially a kind of one-way valve injection device for die casting machine.
Background technology
Die casting machine is under pressure molten metal bath injection cooling forming in the mould, obtains a series of industrial foundry machinery of solid metal foundry goods after the die sinking, is used at first the die casting font.Along with science and technology and industrial progress, especially along with industrial expansions such as automobile, motorcycle and household electrical appliance, from energy-conservation, aspect such as saving raw material etc., die-casting technique has obtained to develop extremely rapidly again.Core component in the die casting machine is injection device, and as shown in Figure 3, existing injection device comprises shot piston 1, floating piston 2, charged piston bar 3 and charged piston 4, and injection device is by HYDRAULIC CONTROL SYSTEM work.Also have the injection cylinder barrel 5, injection valve plate 6 and the supercharging valve plate 7 that are tightly connected successively, place shot piston 1 and floating piston 2 in the cylinder barrel of injection cylinder barrel 5, supercharging valve plate 7 interior placement charged pistons 4, charged piston bar 3 right-hand members are fixedly connected with charged piston 4, left end passes floating piston 2, the left part of charged piston bar 3 is fixedly installed a hole dish 8, and floating piston 2 is hollow cylinder, and charged piston bar 3 has a sealing cone corresponding with floating piston 2 cylindrical shells near floating piston 2 places.Offer stroke hydraulic fluid port 61 on the injection valve plate 6, at a slow speed and quick injection stage, pressure oil enters the gap that stroke hydraulic fluid port 61 flows through 2 of sealing cones 31 and floating piston on the charged piston bar 3, penetrates piston 1 to left movement by the 8 pusher dynamic pressures of hole dish; Supercharging valve plate 7 offers supercharging hydraulic fluid port 71 near charged piston 3 places, pressurization stages, pressure oil enters supercharging hydraulic fluid port 71, promote charged piston 4 and charged piston bar 3 to left movement, make the cylindrical shell sealing of sealing cone 31 and floating piston 2 on the charged piston bar 3 and promote floating piston 2 to left movement, make shot piston 1 end pressure moment rising, form supercharging; Shot piston 1 moves right during backhaul, and pressure oil makes floating piston 2 move right and back down charged piston bar 3, and pressure oil is refluxed from stroke hydraulic fluid port 61.
The injection device complex structure of the floating piston 2 that existing die casting machine adopts, make difficulty, install and the maintenance complexity, cause manufacturing cost and use cost higher, it is unreliable that the complexity of mechanism causes moving, and poor stability is difficult to satisfy the requirement of high-end die casting, need a kind of substitute products, reduce cost and improve operation stability.
Summary of the invention
The technical problem to be solved in the present invention is: improves operation stability in order to simplify existing die casting machine structure, the invention provides a kind of one-way valve injection device for die casting machine, adopt check valve to realize blower operations, and reliable stable, make simple.
The technical solution adopted for the present invention to solve the technical problems is: a kind of one-way valve injection device for die casting machine, comprise the injection cylinder barrel, be arranged on the shot piston in the injection cylinder barrel, charged piston and supercharging valve plate, the supercharging valve plate offers the first valve opening and the second valve opening, charged piston is arranged in the first valve opening and with the first valve opening movable sealing and cooperates, be tightly connected between the first valve opening of injection cylinder barrel and supercharging valve plate, be provided with check valve between described shot piston and the charged piston, one end of check valve is arranged in the injection cylinder barrel and cooperates with the movable sealing of injection cylinder barrel, the other end of check valve is fixedly connected with charged piston, the second valve opening communicates with the check valve oil-in, the check valve oil-out is communicated with the rodless cavity of injection cylinder barrel, the second valve opening of supercharging valve plate passes into pressure oil enters the injection cylinder barrel through check valve rodless cavity, the second valve opening place of supercharging valve plate backs down the check valve push rod of check valve when also being provided with backhaul, the two ends of the first valve opening of supercharging valve plate also offer and pass into A chamber and the B chamber that pressure oil promotion charged piston moves in the first valve opening.
Preferred one-way valve, check valve is the spring check valve, check valve comprises one-way valve seat, nonreturn valve core, spring and check valve body, one-way valve seat one end slidably is arranged in the cylinder barrel of injection cylinder barrel, the other end of one-way valve seat is fixedly connected with an end of charged piston, described check valve body one end is arranged in the charged piston, the check valve body other end passes charged piston and is communicated with the second valve opening, described one-way valve seat and check valve body are hollow cylinder, described nonreturn valve core is installed in the hollow cylinder of one-way valve seat, offer liquid-through hole on the nonreturn valve core, be provided with the spring that pretightning force is provided between nonreturn valve core and the one-way valve seat, nonreturn valve core is tightly connected with the check valve body body end surface under spring action.
The second valve hole end surface place of described supercharging valve plate also has valve gap, described valve gap and supercharging valve plate are tightly connected, offer the fuel feed hole that is communicated with the second valve opening in the described valve gap, described check valve push rod is arranged on the valve gap, and the length of check valve push rod is greater than the distance of nonreturn valve core end face to the valve gap end face.
For protecting the second valve opening not frayed, have the fairlead of coaxial setting between described check valve body and the second valve opening, fairlead is fixedly mounted in the cylinder body of supercharging valve plate.
For one-way valve seat is connected with charged piston reliably, the link of described one-way valve seat and charged piston is fixedly connected with by coupling flange.
The invention has the beneficial effects as follows, one-way valve injection device for die casting machine of the present invention is simple in structure, be easy to make, low cost of manufacture, easy to installation and maintenance, high to the oil circuit integrated level, with respect to the floating piston stable and reliable operation, can solve the unsettled problem of speed when in pressure control situation, shifting to an earlier date supercharging and Stroke Control supercharging, supercharging can realize stroke or time control, shorten and build the pressure time, the requirement of the present high-end die casting of the wider adaptation of energy.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the one-way valve injection device most preferred embodiment for die casting machine of the present invention;
Fig. 2 is the structural representation of the most preferred embodiment of check valve of the present invention.
Among the figure: 1. injection cylinder barrel, 11. rodless cavities, 2. shot piston, 3. charged piston, 4. supercharging valve plate, 41. first valve openings, 42. the second valve opening, 43.A chamber, 44.B chamber, 5. check valve, 51. one-way valve seats, 52. nonreturn valve cores, 53. spring, 54. check valve body, 6. valve gap, 7. fairlead, 8. coupling flange.
Fig. 3 is the structural representation of floating piston injection device in the prior art.
Among the figure: 1. shot piston, 2. floating piston, 3. charged piston bar, 31. sealing cones, 4. charged piston, 5. injection oil cylinder, 6. injection valve plate, 61. stroke hydraulic fluid ports, 7. supercharging valve plate, 71. supercharging hydraulic fluid ports, 8. hole dish.
The specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Fig. 1 Fig. 2 is the one-way valve injection device most preferred embodiment for die casting machine of the present invention, comprise injection cylinder barrel 1, be arranged on the shot piston 2 in the injection cylinder barrel 1, charged piston 3 and supercharging valve plate 4, supercharging valve plate 4 offers the first valve opening 41 and the second valve opening 42, charged piston 3 is arranged in the first valve opening 41 and with 41 movable sealings of the first valve opening and cooperates, be tightly connected between the first valve opening 41 of injection cylinder barrel 1 and supercharging valve plate 4, be provided with check valve 5 between described shot piston 2 and the charged piston 3, one end of check valve 5 is arranged in the injection cylinder barrel 1 and cooperates with 1 movable sealing of injection cylinder barrel, the other end of check valve 5 is fixedly connected with charged piston 3, the second valve opening 42 communicates with check valve 5 oil-ins, check valve 5 oil-outs are communicated with the rodless cavity 11 of injection cylinder barrel 3, the second valve opening 42 of supercharging valve plate 4 passes into pressure oil enters injection cylinder barrel 1 through check valve 5 rodless cavity 11, the second valve opening 42 places of supercharging valve plate 4 back down the check valve push rod 61 of check valve 5 when also being provided with backhaul, the two ends of the first valve opening 41 of supercharging valve plate 4 also offer and pass into pressure oil promotion charged piston 3 in A chamber 43 and the B chamber 44 of the 41 interior actions of the first valve opening.
For better realizing the blower operations preferred one-way valve, check valve 5 is the spring check valve, check valve 5 comprises one-way valve seat 51, nonreturn valve core 52, spring 53 and check valve body 54, one-way valve seat 51 1 ends slidably are arranged in the cylinder barrel of injection cylinder barrel 1, the other end of one-way valve seat 51 is fixedly connected with an end of charged piston 3, check valve body 54 1 ends are arranged in the charged piston 3, check valve body 54 other ends pass charged piston and are communicated with the second valve opening 42, one-way valve seat 51 and check valve body 54 are hollow cylinder, nonreturn valve core 52 is installed in the hollow cylinder of one-way valve seat 51, offer liquid-through hole on the nonreturn valve core 52, be provided with the spring 53 that pretightning force is provided between nonreturn valve core 52 and the one-way valve seat 51, nonreturn valve core 52 is tightly connected with check valve body 54 body end surface under spring 53 effects.
The second valve opening 42 ends of supercharging valve plate 4 also have valve gap 6, valve gap 6 is tightly connected with supercharging valve plate 4, offer the fuel feed hole that is communicated with the second valve opening 42 in the valve gap 6, check valve push rod 61 is arranged on the valve gap 6, and the length of check valve push rod 61 is greater than the distance of nonreturn valve core 52 end faces to valve gap 6 end faces.
Have the fairlead 7 of coaxial setting between check valve body 54 and the second valve opening 42, fairlead 7 is fixedly mounted in the cylinder body of supercharging valve plate 4.The link of one-way valve seat 51 and charged piston 3 is fixedly connected with by coupling flange 8.
Below introduce die casting machine workflow: a. and at a slow speed aluminium alloy in the bowl is advanced to the cast gate place, simultaneously exhaust; B. after aluminium alloy arrived the cast gate place fully, the shot piston high-speed motion promoted aluminium alloy and is full of fast mold cavity; C. after aluminium alloy was full of die cavity, moment started high pressure with the aluminium alloy compacting.
Below in conjunction with the workflow that shoots material that adopts the one-way valve injection device for die casting machine of the present invention: a at a slow speed: open in the second valve opening 42 and A chamber 43, B chamber 44 is closed, the inlet opening of valve gap 6 passes into pressure oil, pressure oil flows through the second valve opening 42 and check valve body 54 successively, pressure oil flows to check valve body 54 and backs down nonreturn valve core 52 with nonreturn valve core 52 junctions, the liquid-through hole that pressure oil flows through on the nonreturn valve core 52 enters in the rodless cavity 11 of injection cylinder barrel 1, promoting shot piston 2 advances at a slow speed, aluminium alloy in the bowl is advanced simultaneously exhaust to the cast gate place;
The quick injection of b: open in the second valve opening 42 and A chamber 43, and B chamber 44 is closed, and the pressure oil intake in the second valve opening 42 strengthens, and promotes shot piston 2 high-speed motions, makes aluminium alloy be full of fast mold cavity;
C supercharging: be that quick injection is when finishing when aluminium alloy is full of die cavity, pressure moment rising in the rodless cavity 11, check valve 5 is closed rapidly under the pretightning force of spring 53 and the pressure-acting in the rodless cavity 11, being nonreturn valve core 52 moves right and check valve body 54 sealings under the pressure-acting of the pretightning force of spring 53 and shot piston 2 ends, B chamber 44 unlatchings this moment, pressure oil is 43 inflows from the A chamber, charged piston 3 is subject to active force left, charged piston 3 is moved to the left, pressure moment of shot piston 2 ends significantly raises, and forms supercharging;
D backhaul: after the injection operation is finished, behind product pressurize certain hour, die casting machine need carry out the die casting of next part, injection cylinder barrel 1 rod chamber and B chamber 44 enter pressure oil simultaneously, and shot piston 2 moves right with charged piston 3 backhauls, when the nonreturn valve core 52 of check valve 5 contacts with check valve push rod 61, nonreturn valve core 52 is withstood, check valve 5 is opened, and pressure oil flows through check valve 5 and enters the second valve opening 42, makes gradually shot piston 2 return to initial position.
Take above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (5)
1. one-way valve injection device that is used for die casting machine, it is characterized in that: comprise injection cylinder barrel (1), be arranged on the shot piston (2) in the injection cylinder barrel (1), charged piston (3) and supercharging valve plate (4), supercharging valve plate (4) offers the first valve opening (41) and the second valve opening (42), charged piston (3) is arranged in the first valve opening (41) and with the first valve opening (41) movable sealing and cooperates, be tightly connected between first valve opening (41) of injection cylinder barrel (1) and supercharging valve plate (4), be provided with check valve (5) between described shot piston (2) and the charged piston (3), one end of check valve (5) is arranged in the injection cylinder barrel (1) and cooperates with injection cylinder barrel (1) movable sealing, the other end of check valve (5) is fixedly connected with charged piston (3), the second valve opening (42) communicates with check valve (5) oil-in, check valve (5) oil-out is communicated with the rodless cavity (11) of injection cylinder barrel (1), second valve opening (42) of supercharging valve plate (4) passes into pressure oil enters injection cylinder barrel (1) through check valve (5) rodless cavity (11), second valve opening (42) of supercharging valve plate (4) backs down the check valve push rod (61) of check valve (5) when locating also to be provided with backhaul, the two ends of first valve opening (41) of supercharging valve plate (4) also offer and pass into A chamber (43) and B chamber (44) that pressure oil promotion charged piston (3) moves in the first valve opening (41).
2. the one-way valve injection device for die casting machine as claimed in claim 1, it is characterized in that: described check valve (5) is the spring check valve, check valve (5) comprises one-way valve seat (51), nonreturn valve core (52), spring (53) and check valve body (54), one-way valve seat (51) one ends slidably are arranged in the cylinder barrel of injection cylinder barrel (1), the other end of one-way valve seat (51) is fixedly connected with an end of charged piston (3), described check valve body (54) one ends are arranged in the charged piston (3), check valve body (54) other end passes charged piston and is communicated with the second valve opening (41), described one-way valve seat (51) and check valve body (54) are hollow cylinder, described nonreturn valve core (52) is installed in the hollow cylinder of one-way valve seat (51), nonreturn valve core offers liquid-through hole on (52), be provided with the spring (53) that pretightning force is provided between nonreturn valve core (52) and the one-way valve seat (51), nonreturn valve core (52) is tightly connected with check valve body (54) body end surface under spring (53) effect.
3. the one-way valve injection device for die casting machine as claimed in claim 2, it is characterized in that: the second valve opening (42) end of supercharging valve plate (4) also has valve gap (6), described valve gap (6) is tightly connected with supercharging valve plate (4), offer the fuel feed hole that is communicated with the second valve opening (42) in the described valve gap (6), described check valve push rod (61) is fixedly installed on the valve gap (6), and the length of check valve push rod (61) is greater than the distance of nonreturn valve core (52) end face to valve gap (6) end face.
4. the one-way valve injection device for die casting machine as claimed in claim 2, it is characterized in that: have the fairlead (7) of coaxial setting between described check valve body (54) and the second valve opening (42), fairlead (7) is fixedly mounted in the cylinder body of supercharging valve plate (4).
5. the one-way valve injection device for die casting machine as claimed in claim 2, it is characterized in that: the link of described one-way valve seat (51) and charged piston (3) is fixedly connected with by coupling flange (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110098598 CN102205407B (en) | 2011-04-20 | 2011-04-20 | One-way valve injection device for die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110098598 CN102205407B (en) | 2011-04-20 | 2011-04-20 | One-way valve injection device for die casting machine |
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| Publication Number | Publication Date |
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| CN102205407A CN102205407A (en) | 2011-10-05 |
| CN102205407B true CN102205407B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110098598 Expired - Fee Related CN102205407B (en) | 2011-04-20 | 2011-04-20 | One-way valve injection device for die casting machine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773451A (en) * | 2012-07-19 | 2012-11-14 | 湖州机床厂有限公司 | Quick pressurizing injection device of hydraulic press |
| CN103252472A (en) * | 2013-05-07 | 2013-08-21 | 苏州科力迪软件技术有限公司 | Die casting machine injection stroke controller |
| CN108194669A (en) * | 2017-12-29 | 2018-06-22 | 宁波海天金属成型设备有限公司 | Reliable locking one-way isolation valve arrangement and supercharging cylinder structure |
| CN108790268B (en) * | 2018-07-20 | 2022-03-01 | 松科快换（常州）智能装备有限公司 | Self-locking clamp |
| CN110701345B (en) * | 2019-10-10 | 2024-03-15 | 伊之密股份有限公司 | Injection check valve of die casting machine and die casting machine hydraulic system using same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2675298Y (en) * | 2004-01-02 | 2005-02-02 | 陈新华 | Magnesium alloy die casting machine |
| CN201735760U (en) * | 2010-07-29 | 2011-02-09 | 东莞市益格机电有限公司 | Integral type pressurization piston of pressure injection mechanism of die-casting machine |
| CN202045356U (en) * | 2011-04-20 | 2011-11-23 | 常州华晨机械制造有限公司 | One-way valve injection device for die casting machine |
-
2011
- 2011-04-20 CN CN 201110098598 patent/CN102205407B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2675298Y (en) * | 2004-01-02 | 2005-02-02 | 陈新华 | Magnesium alloy die casting machine |
| CN201735760U (en) * | 2010-07-29 | 2011-02-09 | 东莞市益格机电有限公司 | Integral type pressurization piston of pressure injection mechanism of die-casting machine |
| CN202045356U (en) * | 2011-04-20 | 2011-11-23 | 常州华晨机械制造有限公司 | One-way valve injection device for die casting machine |
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| CN102205407A (en) | 2011-10-05 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20111005 Assignee: Changzhou Huachen Foundry Co., Ltd. Assignor: Changzhou Huachen Machinery Manufacturing Co.,Ltd. Contract record no.: 2015320000198 Denomination of invention: One-way valve injection device for die casting machine Granted publication date: 20130102 License type: Exclusive License Record date: 20150415 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
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Effective date of registration: 20180404 Address after: 213200 Jiangsu province Changzhou Xiyuan town Jintan District Road No. 9 Patentee after: Changzhou Yuan Tong Electronic Technology Co., Ltd. Address before: Wujin Jiaze town 213146 area in Jiangsu city of Changzhou Province on the village of Changzhou Huachen Machinery Manufacturing Co. Ltd. Patentee before: Changzhou Huachen Machinery Manufacturing Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20200420 |