CN102773451A - Quick pressurizing injection device of hydraulic press - Google Patents
Quick pressurizing injection device of hydraulic press Download PDFInfo
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- CN102773451A CN102773451A CN2012102514532A CN201210251453A CN102773451A CN 102773451 A CN102773451 A CN 102773451A CN 2012102514532 A CN2012102514532 A CN 2012102514532A CN 201210251453 A CN201210251453 A CN 201210251453A CN 102773451 A CN102773451 A CN 102773451A
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Abstract
The invention discloses a quick pressurizing injection device of a hydraulic press. The quick pressurizing injection device solves technical problems of complicated structure and low response speed of an existing injection device. The quick pressurizing injection device of the hydraulic press comprises an injection cylinder, a pressurizing cylinder and a hydraulic driving mechanism, an injection piston is arranged in the injection cylinder, a pressurizing piston is arranged in the pressurizing cylinder, the injection cylinder and the pressurizing cylinder are integrally molded, an oil inlet channel is arranged in the pressurizing piston, a rodless cavity of the injection cylinder is communicated with a rodless cavity of the pressurizing cylinder via the oil inlet channel, and a one-way control valve for controlling opening or closing of the oil inlet channel is arranged in the oil inlet channel. The quick pressurizing injection device in an embodiment of the invention is mainly used for hydraulic presses and die-casting machines, and die-casting molding of parts such as automobile engines is realized.
Description
Technical field
The present invention relates to a kind of injection device of hydraulic press, especially the quick pressure charging press-shoot device of hydraulic press.
Background technology
Die casting is a kind of casting method of precision, and the dimensional tolerance of the die casting of casting via die casting is very little, and surface accuracy is very high, and under most situation, die casting does not need reface processing can assemble application, and threaded part also can directly cast out.From typical CCD camera part, findings such as typewriting parts, electronic computing device and ornament etc., and the complex parts of the vehicles such as automobile, locomotive, aircraft utilize casting die manufacturing mostly.For example, in the extrusion process of motor stator, require that die casting speed is fast, die casting pressure is big; Because the good heat conductivity of aluminium, aluminium has dissolved and has been that aluminium water, silicon steel sheet then are from the normal temperature state during die casting; If according to the casting of routine, aluminium water can't coat silicon steel sheet at all, therefore;, aluminium water will simultaneously in order to guarantee its compactness, not need to increase pressure before having cooling with the quick injection of aluminium water to the place that needs; According to above-mentioned extrusion process requirement, the performance quality of injection device has just determined the quality of die-cast product.
Injection system and pressure charging system in the existing injection device are separately independently; Need two cover control systems to control; Though it is quite tight that this injection device can be accomplished in control, system build press need carry out that signal receives, signal is judged before the supercharging, make one's options, link such as command execution, elongated and built the pressure pressurization time; Response speed is slow; Can not adapt to quick injection pressure charging system, and injection system separates with pressure charging system and also can cause apparatus structure complicated, be with inconvenience for assembling and maintenance.
Summary of the invention
Problem to be solved by this invention just provides the quick pressure charging press-shoot device of a kind of hydraulic press, and simple in structure, device stability is good, and can realize the quick response of injection to supercharging, increases work efficiency.
For solving the problems of the technologies described above; The present invention adopts following technical scheme: the quick pressure charging press-shoot device of a kind of hydraulic press; The pressurized cylinder and the hydraulic drive mechanism that comprise the shot sleeve of built-in shot piston, built-in charged piston; Said shot sleeve and said pressurized cylinder are one-body molded, are provided with the oil inlet passage that is used to be communicated with shot sleeve rodless cavity and pressurized cylinder rodless cavity in the said charged piston, are provided with the one-way control valve that the control oil inlet passage is opened or closed in the said oil inlet passage.
Further; The rod chamber of said shot sleeve is connected through the injection oil return pipe with hydraulic drive mechanism; The rodless cavity of said shot sleeve is connected through the injection oil inlet pipe with hydraulic drive mechanism; The rod chamber of said pressurized cylinder is connected through the supercharging oil return pipe with hydraulic drive mechanism, and the rodless cavity of said pressurized cylinder is connected through the supercharging oil inlet pipe with hydraulic drive mechanism.
Further; Said hydraulic drive mechanism comprises oil circuit transfer valve, accumulator, Oil pump electrical machinery group and fuel tank; Said accumulator, Oil pump electrical machinery group and fuel tank all connect said oil circuit transfer valve, and said oil circuit transfer valve connects shot sleeve and pressurized cylinder respectively through oil pipe.
Further, said one-way control valve comprises spool and stage clip, is provided with stop part in the said oil inlet passage, and said stage clip one end is against on the said stop part, and the said stage clip other end props up spool and makes the port of spool shutoff oil inlet passage near the pressurized cylinder rodless cavity.
Further, said stop part is a nut, and said nut and said oil inlet passage spin through screw thread, regulates the pre compressed magnitude of stage clip through said nut.
Further, said spool is the ball-type spool.
Beneficial effect of the present invention:
1, compare prior art, the present invention is combined into one shot sleeve and pressurized cylinder, and integrated degree is high, and on the basis that does not influence control accuracy, apparatus structure is simpler, compact, and it is little to take up room;
2, to adopt one group of hydraulic drive mechanism be that shot sleeve and pressurized cylinder provide power in the present invention; Realize the flexibility conversion of quick injection through one-way control valve between shot sleeve and the pressurized cylinder to the supercharging compacting; Transfer process is confirmed by the device self structure fully; Have no the control action of intervention, hydraulic shock is little, and response speed is fast.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further explanation:
Fig. 1 is a structural representation of the present invention.
The specific embodiment
The present invention provides a kind of hydraulic press quick pressure charging press-shoot device; The pressurized cylinder and the hydraulic drive mechanism that comprise the shot sleeve of built-in shot piston, built-in charged piston; Said shot sleeve and said pressurized cylinder are one-body molded; Be provided with the oil inlet passage that is used to be communicated with shot sleeve rodless cavity and pressurized cylinder rodless cavity in the said charged piston, be provided with the one-way control valve that the control oil inlet passage is opened or closed in the said oil inlet passage.Shot sleeve and pressurized cylinder are combined into one, and integrated degree is high, and on the basis that does not influence control accuracy, apparatus structure is simpler, compact, and it is little to take up room.
The technical scheme of the embodiment of the invention is made an explanation and explain below in conjunction with the accompanying drawing of present embodiment, but following embodiment is the preferred embodiments of the present invention only, is not whole.Based on the embodiment in the embodiment, those skilled in the art belong to protection scope of the present invention at following other embodiment that obtains of the prerequisite of not making creative work.
With reference to Fig. 1; The quick pressure charging press-shoot device of hydraulic press; Comprise the shot sleeve 1 of built-in shot piston 3, the pressurized cylinder 2 and the hydraulic drive mechanism of built-in charged piston 4; Said shot sleeve 1 and said pressurized cylinder 2 are one-body molded, are provided with the oil inlet passage 41 that is used to be communicated with shot sleeve rodless cavity 11 and pressurized cylinder rodless cavity 21 in the said charged piston 4, are provided with the one-way control valve 5 that control oil inlet passage 41 is opened or closed in the said oil inlet passage 41.Need to prove: the inner chamber of shot sleeve 1 is divided into rod chamber 12 and rodless cavity 11 by shot piston 3; Equally; The inner chamber of pressurized cylinder 2 is divided into rod chamber 22 and rodless cavity 21 by charged piston 4, and charged piston 4 can move by the rodless cavity 11 to shot sleeve 1 under the driving of hydraulic oil.
Above-mentioned hydraulic drive mechanism comprises oil circuit transfer valve 7, accumulator 6, Oil pump electrical machinery group 8 and fuel tank 9; Said accumulator 6, Oil pump electrical machinery group 8 and fuel tank 9 all connect said oil circuit transfer valve 7, and said oil circuit transfer valve 7 connects shot sleeve 1 and pressurized cylinder 2 respectively through oil pipe.Generally; The rod chamber 12 of shot sleeve 1 is connected through injection oil return pipe 14 with hydraulic drive mechanism; The rodless cavity 11 of said shot sleeve 1 is connected through injection oil inlet pipe 13 with hydraulic drive mechanism; The rod chamber 22 of said pressurized cylinder 2 is connected through supercharging oil return pipe 24 with hydraulic drive mechanism, and the rodless cavity 21 of said pressurized cylinder 2 is connected through supercharging oil inlet pipe 23 with hydraulic drive mechanism.7 control of oil circuit transfer valve injection oil return pipe 14, injection oil inlet pipe 13, supercharging oil return pipe 24 and supercharging oil inlet pipe 23 oil-feeds/oil return, On/Off.
Only need lean on Oil pump electrical machinery group 8 to produce hydraulic oils during normal injection and promote shot piston 3 and get final product, when injection fast, need Oil pump electrical machinery group 8 and accumulator 6 that hydraulic oil promotion shot piston 3 is provided.
One-way control valve 5 has been realized the conversion of quick injection to the supercharging compacting; One-way control valve 5 comprises ball-type spool 51 and stage clip 52; Be provided with stop part 53 in the said oil inlet passage 41; Said stage clip 52 1 ends are against on the said stop part 53, and said stage clip 52 other ends prop up spool 51 and make the port of spool 51 shutoff oil inlet passages 41 near pressurized cylinder rodless cavity 21.When normal injection and quick injection, oil pressure overcomes spool 51 gravity and stage clip 52 elastic force are pushed spool 51 open, makes hydraulic oil get into the rodless cavity of shot sleeve 1.
In order to regulate the pre compressed magnitude of stage clip 52; Push the required pressure of spool 51 open so that regulate, stop part 53 is designed to nut, the inwall of nut and oil inlet passage 41 spins through screw thread; The rotation nut moves axially it in oil inlet passage 41, regulate the pre compressed magnitude of stage clip 52.As shown in Figure 1, when nut moved down, stage clip 52 pre compressed magnitudes increased, and pushing spool 51 required pressure open increases; When nut moved up, stage clip 52 pre compressed magnitudes reduced, and pushed spool 51 required pressure open and reduced.Through adjusting, can make the quick pressure charging press-shoot device of present embodiment require to carry out the adjusting of initial pressure, so that the speed that ejects of control shot piston according to extrusion process to stage clip 52 pre compressed magnitudes.
Operation principle of the present invention:
Before the beginning die casting, Oil pump electrical machinery group 8 is given accumulator 6 topping ups, stops after reaching predetermined pressure;
1, normal injection: the hydraulic oil that Oil pump electrical machinery group 8 produces gets into the rodless cavity of pressurized cylinder 2 through supercharging oil inlet pipe 23; Hydraulic oil pushes spool 51 open after oil inlet passage 41 gets into the rodless cavity of shot sleeve 1; Promoting shot piston 3 ejects; At this moment, 14 oil returns of injection oil return pipe, injection oil inlet pipe 13 is closed with supercharging oil return pipe 24.
2, injection fast: oil circuit transfer valve 7 actions; The hydraulic oil that makes Oil pump electrical machinery group 8 and accumulator 6 produce gets into the rodless cavity of pressurized cylinder 2 through supercharging oil inlet pipe 23; Hydraulic oil ejects with bigger force shot piston 3 through the rodless cavity of oil inlet passage 41 entering shot sleeves 1 fast; At this moment, 14 oil returns of injection oil return pipe, injection oil inlet pipe 13 is closed with supercharging oil return pipe 24.
3, supercharging compacting: after shot piston 3 ejects certain distance; The load active force that shot piston 3 is born has surpassed the rodless cavity oil pressure of shot sleeve 1; At this moment, the rodless cavity oil pressure of shot sleeve 1 is suitable basically with the rodless cavity oil pressure of pressurized cylinder 2, makes spool 51 that oil inlet passage 41 is closed; The hydraulic oil that gets into pressurized cylinder rodless cavity 21 can only promote charged piston 4 and advance; Because the two ends diameter of section of charged piston 4 is different, according to law of connected vessels, the pressure that bear at charged piston 4 two ends is suitable; But because charged piston 4 is less near the sectional area of shot sleeve rodless cavity 11 1 ends; Make shot sleeve rodless cavity 11 can obtain bigger pressure and come the hydraulic oil in the compression chamber, produce high pressure in the shot sleeve rodless cavity 11 shot piston 3 is ejected once more, guaranteed the compactness of die-casting material.
4, backhaul: after accomplishing die casting, injection oil return pipe 14 and 24 oil-feeds of supercharging oil return pipe, injection oil inlet pipe 13 and 23 oil returns of supercharging oil inlet pipe make shot piston 3 and charged piston 4 reset.
Extrusion process to annotate the aluminium motor stator is an example: because the good heat conductivity of aluminium, aluminium has dissolved and has been that aluminium water, silicon steel sheet then are from the normal temperature state during die casting, if according to the casting of routine, aluminium water can't coat silicon steel sheet at all.Therefore need quick injection, before aluminium water has cooling, just aluminium hydraulic pressure is not mapped to the place that needs, and, need the supercharging compacting in order to guarantee its compactness.
The present invention is combined into one shot sleeve and pressurized cylinder, realizes the flexibility conversion between quick injection and the supercharging compacting, and transfer process confirms to have no the control action of intervention by the device self structure fully, and hydraulic shock is little, and response speed is fast.
Present embodiment is mainly used on hydraulic press, the die casting machine, realizes the die cast of parts such as automobile engine.
Through the foregoing description, the object of the invention is by in full force and effect having reached.The personage who is familiar with this skill should be understood that the content that the present invention includes but be not limited to describe in the accompanying drawing and the top specific embodiment.Any modification that does not depart from function of the present invention and structural principle all will be included in the scope of claims.
Claims (6)
1. quick pressure charging press-shoot device of hydraulic press; The pressurized cylinder and the hydraulic drive mechanism that comprise the shot sleeve of built-in shot piston, built-in charged piston; It is characterized in that: said shot sleeve and said pressurized cylinder are one-body molded; Be provided with the oil inlet passage that is used to be communicated with shot sleeve rodless cavity and pressurized cylinder rodless cavity in the said charged piston, be provided with the one-way control valve that the control oil inlet passage is opened or closed in the said oil inlet passage.
2. the quick pressure charging press-shoot device of a kind of hydraulic press as claimed in claim 1; It is characterized in that: the rod chamber of said shot sleeve is connected through the injection oil return pipe with hydraulic drive mechanism; The rodless cavity of said shot sleeve is connected through the injection oil inlet pipe with hydraulic drive mechanism; The rod chamber of said pressurized cylinder is connected through the supercharging oil return pipe with hydraulic drive mechanism, and the rodless cavity of said pressurized cylinder is connected through the supercharging oil inlet pipe with hydraulic drive mechanism.
3. the quick pressure charging press-shoot device of a kind of hydraulic press as claimed in claim 1; It is characterized in that: said hydraulic drive mechanism comprises oil circuit transfer valve, accumulator, Oil pump electrical machinery group and fuel tank; Said accumulator, Oil pump electrical machinery group and fuel tank all connect said oil circuit transfer valve, and said oil circuit transfer valve connects shot sleeve and pressurized cylinder respectively through oil pipe.
4. the quick pressure charging press-shoot device of a kind of hydraulic press as claimed in claim 1; It is characterized in that: said one-way control valve comprises spool and stage clip; Be provided with stop part in the said oil inlet passage; Said stage clip one end is against on the said stop part, and the said stage clip other end props up spool and makes the port of spool shutoff oil inlet passage near the pressurized cylinder rodless cavity.
5. the quick pressure charging press-shoot device of a kind of hydraulic press as claimed in claim 4 is characterized in that: said stop part is a nut, and said nut and said oil inlet passage spin through screw thread, regulates the pre compressed magnitude of stage clip through said nut.
6. the quick pressure charging press-shoot device of a kind of hydraulic press as claimed in claim 4 is characterized in that: said spool is the ball-type spool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102514532A CN102773451A (en) | 2012-07-19 | 2012-07-19 | Quick pressurizing injection device of hydraulic press |
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| CN2012102514532A CN102773451A (en) | 2012-07-19 | 2012-07-19 | Quick pressurizing injection device of hydraulic press |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736959A (en) * | 2013-12-25 | 2014-04-23 | 苏州三基铸造装备股份有限公司 | Multi-stage speed injection system |
| CN103894580A (en) * | 2012-12-28 | 2014-07-02 | 宜兴市佳晨压铸机制造有限公司 | Novel injection and oil return sliding pipe structure |
| CN113579196A (en) * | 2021-07-15 | 2021-11-02 | 伯乐智能装备有限公司 | Method for manufacturing light alloy modified product |
| CN114713785A (en) * | 2021-11-15 | 2022-07-08 | 湖南科技大学 | Light alloy integrated continuous die-casting forming device and method |
| CN115351259A (en) * | 2022-07-08 | 2022-11-18 | 宁波力劲科技有限公司 | Pressurizing structure for die casting machine energy accumulator and using method of pressurizing structure |
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| JP4235025B2 (en) * | 2003-04-25 | 2009-03-04 | ユニオン精密株式会社 | Chixso mold or die-casting type mold release agent coating system |
| CN201493472U (en) * | 2009-09-11 | 2010-06-02 | 王亚芹 | Novel injection device for die casting machine |
| CN201931065U (en) * | 2011-01-28 | 2011-08-17 | 阜新国泰压铸机制造有限公司 | Built-in check valve injection system |
| 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 |
| CN202779687U (en) * | 2012-07-19 | 2013-03-13 | 湖州机床厂有限公司 | Rapid pressurizing injection device of hydraulic machine |
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2012
- 2012-07-19 CN CN2012102514532A patent/CN102773451A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4235025B2 (en) * | 2003-04-25 | 2009-03-04 | ユニオン精密株式会社 | Chixso mold or die-casting type mold release agent coating system |
| CN201493472U (en) * | 2009-09-11 | 2010-06-02 | 王亚芹 | Novel injection device for die casting machine |
| CN201931065U (en) * | 2011-01-28 | 2011-08-17 | 阜新国泰压铸机制造有限公司 | Built-in check valve injection system |
| 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 |
| CN202779687U (en) * | 2012-07-19 | 2013-03-13 | 湖州机床厂有限公司 | Rapid pressurizing injection device of hydraulic machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894580A (en) * | 2012-12-28 | 2014-07-02 | 宜兴市佳晨压铸机制造有限公司 | Novel injection and oil return sliding pipe structure |
| CN103736959A (en) * | 2013-12-25 | 2014-04-23 | 苏州三基铸造装备股份有限公司 | Multi-stage speed injection system |
| CN113579196A (en) * | 2021-07-15 | 2021-11-02 | 伯乐智能装备有限公司 | Method for manufacturing light alloy modified product |
| CN114713785A (en) * | 2021-11-15 | 2022-07-08 | 湖南科技大学 | Light alloy integrated continuous die-casting forming device and method |
| CN115351259A (en) * | 2022-07-08 | 2022-11-18 | 宁波力劲科技有限公司 | Pressurizing structure for die casting machine energy accumulator and using method of pressurizing structure |
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Application publication date: 20121114 |