CN202045356U - 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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- CN202045356U CN202045356U CN2011201164388U CN201120116438U CN202045356U CN 202045356 U CN202045356 U CN 202045356U CN 2011201164388 U CN2011201164388 U CN 2011201164388U CN 201120116438 U CN201120116438 U CN 201120116438U CN 202045356 U CN202045356 U CN 202045356U
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- check valve
- cylinder barrel
- piston
- supercharging
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Abstract
The utility model relates to a one-way valve injection device for a die casting machine, which comprises an injection cylinder barrel, an injection piston arranged in the injection cylinder barrel, a pressurization piston and a pressurization valve plate, wherein the pressurization valve plate is provided with a first valve hole and a second valve hole, the pressurization piston is arranged in the first valve hole and in dynamic sealing connection with the first valve hole, the injection cylinder barrel is hermetically connected with the first valve hole of the pressurization valve plate, a one-way valve is arranged between the injection piston and the pressurization piston, one end of the one-way valve is arranged in the injection cylinder barrel and in dynamic sealing connection with the injection cylinder barrel, the other end of the one-way valve is fixedly connected with the pressurization 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 is stable and reliable in operation and can solve the problems that pressurization is performed in advance under the pressure control situation and the speed is unstable during the stroke control pressurization; the pressurization can realize stroke or time control, the pressure-establishing time is shortened and the one-way valve injection device can be applicable to the requirements of existing high-end die-cast parts in a wider range.
Description
Technical field
The utility model relates to die casting machine parts technical field, especially a kind of check valve injection device that is used 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 for the die casting font at first.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 an 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, place charged piston 4 in the supercharging valve plate 7, the fixedly connected charged piston 4 of charged piston bar 3 right-hand members, left end passes floating piston 2, the left part of charged piston bar 3 fixedly installs a hole dish 8, and floating piston 2 is a hollow cylinder, and charged piston bar 3 has one and the corresponding sealing awl of 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 awls 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 awl 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.
The utility model content
The technical problems to be solved in the utility model is: improve operation stability in order to simplify existing die casting machine structure, the utility model provides a kind of check valve injection device that is used for die casting machine, adopt check valve to realize blower operations, reliable stable, make simple.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of check valve injection device that is used 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 first valve opening and second valve opening, charged piston is arranged in first valve opening and with the first valve opening movable sealing and cooperates, be tightly connected between 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 fixedlyed connected with charged piston, 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, second valve opening of supercharging valve plate feeds 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 first valve opening of supercharging valve plate also offer and feed A chamber and the B chamber that pressure oil promotion charged piston moves in first valve opening.
Preferred one-way valve, check valve is the spring check valve, check valve comprises unidirectional valve seat, nonreturn valve core, spring and check valve body, unidirectional valve seat one end slidably is arranged in the cylinder barrel of injection cylinder barrel, the other end of unidirectional valve seat is fixedlyed 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 second valve opening, described unidirectional valve seat and check valve body are hollow cylinder, described nonreturn valve core is installed in the hollow cylinder of unidirectional 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 unidirectional valve seat, nonreturn valve core is tightly connected with the check valve body body end surface under spring action.
The second valve opening end 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 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 second valve opening not frayed, have the fairlead of coaxial setting between described check valve body and second valve opening, fairlead is fixedly mounted in the cylinder body of supercharging valve plate.
For unidirectional valve seat is connected with charged piston reliably, the link of described unidirectional valve seat and charged piston is fixedlyed connected by coupling flange.
The beneficial effects of the utility model are, the check valve injection device that is used for die casting machine of the present utility model is simple in structure, be easy to make, low cost of manufacture, easy to installation and maintenance, to oil circuit integrated level height, with respect to the floating piston stable and reliable operation, can solve speed problem of unstable when under 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
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation that is used for the check valve injection device most preferred embodiment of die casting machine of the present utility model;
Fig. 2 is the structural representation of the most preferred embodiment of check valve described in the utility model.
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. second valve opening, 43.A chamber, 44.B chamber, 5. check valve, 51. unidirectional 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 awls, 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 utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
Fig. 1 Fig. 2 is the check valve injection device most preferred embodiment that is used for die casting machine of the present utility model, 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 first valve opening 41 and second valve opening 42, charged piston 3 is arranged in first valve opening 41 and with 41 movable sealings of first valve opening 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 1 movable sealing of injection cylinder barrel, the other end of check valve 5 is fixedlyed connected with charged piston 3, 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, second valve opening 42 of supercharging valve plate 4 feeds pressure oil enters injection cylinder barrel 1 through check valve 5 rodless cavity 11, 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 first valve opening 41 of supercharging valve plate 4 also offer and feed A chamber 43 and the B chamber 44 that pressure oil promotion charged piston 3 moves in first valve opening 41.
For better realizing the blower operations preferred one-way valve, check valve 5 is the spring check valve, check valve 5 comprises unidirectional valve seat 51, nonreturn valve core 52, spring 53 and check valve body 54, unidirectional valve seat 51 1 ends slidably are arranged in the cylinder barrel of injection cylinder barrel 1, the other end of unidirectional valve seat 51 is fixedlyed 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 second valve opening 42, unidirectional valve seat 51 and check valve body 54 are hollow cylinder, nonreturn valve core 52 is installed in the hollow cylinder of unidirectional 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 unidirectional valve seat 51, nonreturn valve core 52 is tightly connected with check valve body 54 body end surface under spring 53 effects.
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 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 second valve opening 42, fairlead 7 is fixedly mounted in the cylinder body of supercharging valve plate 4.The link of unidirectional valve seat 51 and charged piston 3 is fixedlyed connected by coupling flange 8.
Below introducing die casting machine workflow: a. that shoots material will hold glass interior alloy liquid at a slow speed and advance exhaust simultaneously to the cast gate place; B. after alloy liquid arrived the cast gate place fully, the shot piston high-speed motion promoted alloy liquid and is full of mold cavity fast; C. after alloy liquid was full of die cavity, it is real with alloy hydraulic pressure that moment starts high pressure.
Below in conjunction with adopting the workflow that shoots material that is used for the check valve injection device of die casting machine of the present utility model: a at a slow speed: open in second valve opening 42 and A chamber 43, B chamber 44 is closed, the inlet opening of valve gap 6 feeds pressure oil, pressure oil flows through 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, the alloy liquid that holds in the cup is advanced exhaust simultaneously to the cast gate place;
The quick injection of b: open in second valve opening 42 and A chamber 43, and B chamber 44 is closed, and the pressure oil feeding amount in second valve opening 42 strengthens, and promotes shot piston 2 high-speed motions, makes alloy liquid be full of mold cavity fast;
The c supercharging: when alloy liquid is full of die cavity is that quick injection is when finishing, pressure moment rising in the rodless cavity 11, check valve 5 is closed rapidly under the pretightning force of spring 53 and the pressure effect in the rodless cavity 11, being nonreturn valve core 52 moves right and check valve body 54 sealings under the pressure effect 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 subjected 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 second valve opening 42, makes shot piston 2 return to initial position gradually.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (5)
1. check 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 first valve opening (41) and second valve opening (42), charged piston (3) is arranged in first valve opening (41) and with 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 fixedlyed connected with charged piston (3), 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 (3), second valve opening (42) of supercharging valve plate (4) feeds 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 feed A chamber (43) and B chamber (44) that pressure oil promotion charged piston (3) moves in first valve opening (41).
2. the check valve injection device that is used 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 unidirectional valve seat (51), nonreturn valve core (52), spring (53) and check valve body (54), unidirectional valve seat (51) one ends slidably are arranged in the cylinder barrel of injection cylinder barrel (1), the other end of unidirectional valve seat (51) is fixedlyed 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 second valve opening (41), described unidirectional valve seat (51) and check valve body (54) are hollow cylinder, described nonreturn valve core (52) is installed in the hollow cylinder of unidirectional 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 unidirectional valve seat (51), nonreturn valve core (52) is tightly connected with check valve body (54) body end surface under spring (53) effect.
3. the check valve injection device that is used for die casting machine as claimed in claim 2, it is characterized in that: 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 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 check valve injection device that is used 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 second valve opening (42), fairlead (7) is fixedly mounted in the cylinder body of supercharging valve plate (4).
5. the check valve injection device that is used for die casting machine as claimed in claim 2 is characterized in that: the link of described unidirectional valve seat (51) and charged piston (3) is fixedlyed connected by coupling flange (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201164388U CN202045356U (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 |
|---|---|---|---|
| CN2011201164388U CN202045356U (en) | 2011-04-20 | 2011-04-20 | One-way valve injection device for die casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202045356U true CN202045356U (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201164388U Expired - Lifetime CN202045356U (en) | 2011-04-20 | 2011-04-20 | One-way valve injection device for die casting machine |
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| Country | Link |
|---|---|
| CN (1) | CN202045356U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205407A (en) * | 2011-04-20 | 2011-10-05 | 常州华晨机械制造有限公司 | One-way valve injection device for die casting machine |
| CN102861899A (en) * | 2012-09-27 | 2013-01-09 | 汪俊成 | Injection pressurizing structure of die-casting machine |
| CN104259422A (en) * | 2014-09-11 | 2015-01-07 | 东莞市锐风机械有限公司 | Improved die-casting machine supercharging device |
| CN104259423A (en) * | 2014-09-16 | 2015-01-07 | 苏州橙石铸造有限公司 | Injection device for die-casting machine |
| CN104259424A (en) * | 2014-09-16 | 2015-01-07 | 苏州橙石铸造有限公司 | Self-sealing plunger for die-casting machine injection device |
| CN114309529A (en) * | 2022-01-19 | 2022-04-12 | 韶关市威劲星光机械科技有限公司 | Novel vertical cold chamber die casting machine |
-
2011
- 2011-04-20 CN CN2011201164388U patent/CN202045356U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205407A (en) * | 2011-04-20 | 2011-10-05 | 常州华晨机械制造有限公司 | One-way valve injection device for die casting machine |
| CN102205407B (en) * | 2011-04-20 | 2013-01-02 | 常州华晨机械制造有限公司 | One-way valve injection device for die casting machine |
| CN102861899A (en) * | 2012-09-27 | 2013-01-09 | 汪俊成 | Injection pressurizing structure of die-casting machine |
| CN104259422A (en) * | 2014-09-11 | 2015-01-07 | 东莞市锐风机械有限公司 | Improved die-casting machine supercharging device |
| CN104259423A (en) * | 2014-09-16 | 2015-01-07 | 苏州橙石铸造有限公司 | Injection device for die-casting machine |
| CN104259424A (en) * | 2014-09-16 | 2015-01-07 | 苏州橙石铸造有限公司 | Self-sealing plunger for die-casting machine injection device |
| CN104259424B (en) * | 2014-09-16 | 2017-01-18 | 苏州橙石铸造有限公司 | Self-sealing plunger for die-casting machine injection device |
| CN114309529A (en) * | 2022-01-19 | 2022-04-12 | 韶关市威劲星光机械科技有限公司 | Novel vertical cold chamber die casting machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111123 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |