CN204284051U - A kind of pilot valve for die casting machine - Google Patents
A kind of pilot valve for die casting machine Download PDFInfo
- Publication number
- CN204284051U CN204284051U CN201420585739.9U CN201420585739U CN204284051U CN 204284051 U CN204284051 U CN 204284051U CN 201420585739 U CN201420585739 U CN 201420585739U CN 204284051 U CN204284051 U CN 204284051U
- Authority
- CN
- China
- Prior art keywords
- valve
- die casting
- casting machine
- push rod
- pilot valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of pilot valve for die casting machine, comprise cartridge valve, described cartridge valve comprises valve body, spool and valve rod, described valve rod is connected with a push rod, the other end of the relatively described valve rod of described push rod is driving end, described driving end is provided with outside thread, and described outside thread is arranged with nut, and described nut is provided with the internal thread mated with described outside thread; Described push rod is provided with the stop pin preventing push rod from rotating and the draw-in groove coordinated with described stop pin, and the width of described draw-in groove and the diameter of described stop pin match, and the stroke of its length and described spool matches; Described nut is fixedly attached on the output shaft of an actuating motor.A kind of pilot valve for die casting machine of this model utility, can control injection speed or the pressure of die casting machine accurately, and structure is simple, reliable, easy to maintenance.
Description
Technical field
The utility model relates to die casting equipment field, is specifically related to a kind of pilot valve for die casting machine.
Background technique
Die casting machine is exactly under pressure cooling forming in molten metal bath injection to mould, the a series of industrial foundry machinery of solid metal foundry goods is obtained after die sinking, general in the majority with non-ferrous alloy products such as die casting aluminium, zinc, copper, also can other metals of die casting.
Die Casting has following features:
(1) manufacturing efficiency is high, can realize mechanization or automatic production;
(2), good product quality: A, dimensional accuracy be high, and surface finishment is high; B, mechanical property are good; C, interchangeability are good; D, clear-cut, foundry goods wall is thin, complicated, and decorative pattern, pattern, word etc. can obtain high clearness;
(3), good economical benefit: A, economic indicator are excellent; B, die castings cost are low; C, part combination can be made;
(4), die casting equipment, mould investment cost be high, is not suitable for small lot batch manufacture.
Along with science and technology and industrial progress, die-casting technique is also more and more ripe, and due to the development of the high volume products such as automobile, household electric appliance and mobile phone digital, die-casting technique, with advantage that is energy-conservation and saving material, obtains and develops more rapidly.
The main processes of die casting comprises mould and die preheating, matched moulds, cast injection, pressurize and die sinking, cast injection is wherein a very important process, mainly to the speed of injection or the control overflow of pressure very high, especially for some sizes and the very high component of Geometrical Tolerance Principle.
The cast injection of die casting machine is realized by injection oil cylinder, so injection speed or pressure will be controlled, need the flow of the hydraulic oil controlling injection oil cylinder, the usual way of the flow of the hydraulic oil of control injection oil cylinder mainly contains handwheel manual tune and electro-hydraulic proportional flow cartridge valve controls two kinds.The shortcoming of handwheel manual tune is can not Automatic Fine Tuning, can not storage technology parameter, management is inconvenient, the automation controlled can not be realized, obviously the large batch of mode of production is not suitable for, and electro-hydraulic proportional flow cartridge valve, although some shortcomings of handwheel manual tune can be overcome, the control of automation can be realized, but also there is a lot of problem, as required higher to cleanliness of hydraulic oil, high pressure filter must be used in pipeline, and aperture less time there is work blind area, stability is poor, especially when aperture is smaller, although can Automated condtrol be realized, but need to increase extra device and improve Security, once there be problem to need whole valve replacement, maintenance cost is high.
Therefore, design the control valve of a kind of novel control compression casting machine-pressed shoots speed or pressure, can overcome the shortcoming of handwheel manual tune, also can overcome the shortcoming that electro-hydraulic proportional flow cartridge valve controls, be related domain technical issues that need to address.
Model utility content
The technical problems to be solved in the utility model: the control valve designing a kind of novel control compression casting machine-pressed shoots speed or pressure, can overcome the shortcoming of handwheel manual tune, also can overcome the shortcoming that electro-hydraulic proportional flow cartridge valve controls.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of pilot valve for die casting machine, comprise cartridge valve, described cartridge valve comprises valve body, spool and valve rod, described valve rod is connected with a push rod, the other end of the relatively described valve rod of described push rod is driving end, described driving end is provided with outside thread, and described outside thread is arranged with nut, and described nut is provided with the internal thread mated with described outside thread; Described push rod is provided with the stop pin preventing push rod from rotating and the draw-in groove coordinated with described stop pin, and the width of described draw-in groove and the diameter of described stop pin match, and the stroke of its length and described spool matches; Described nut is fixedly attached on the output shaft of an actuating motor.
Preferably, described pilot valve is also provided with the pilot valve controlling described cartridge valve opening and closing.
Preferably, described outside thread is a kind of motion thread.
Preferably, described motion thread is trapezoidal thread.
Preferably, described actuating motor is AC servo motor.
Pass through technique scheme, a kind of pilot valve for die casting machine that the utility model provides, comprise cartridge valve, the valve rod of cartridge valve is connected with a push rod, push rod is provided with outside thread and nut, push rod is provided with the stop pin preventing push rod from rotating simultaneously, like this when nut rotation (clockwise or counterclockwise), push rod can do linear reciprocating motion, valve rod is namely allowed to promote valve core movement, just can regulate the flow of cartridge valve, also just can reach and control the injection speed of injection oil cylinder or the object of pressure, and the motion of nut is by driven by servomotor, the injection speed or the pressure that control injection oil cylinder accurately can be realized, and there is no some problems of electro-hydraulic proportional flow cartridge valve yet.Its beneficial effect is: injection speed or the pressure that can control die casting machine accurately, and structure is simple, reliable, easy to maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of a kind of pilot valve for die casting machine disclosed in the utility model embodiment;
Fig. 2 is assemblied in the schematic diagram in injection oil cylinder for a kind of pilot valve for die casting machine disclosed in the utility model embodiment.
Numeral and the corresponding part title represented by letter in figure:
1. pilot valve 21. valve body 22. spool 23. valve rod 3. push rod 31. stop pin 4. nut 5. actuating motor 6. pilot valve 7. injection oil cylinder 71. pressurizing cylinder 8. two-speed accumulator 9. booster-type accumulator.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Principle of the present utility model is: on the valve rod of cartridge valve, be connected with a push rod, push rod is provided with outside thread and nut, push rod is provided with the stop pin preventing push rod from rotating simultaneously, like this when nut rotation (clockwise or counterclockwise), push rod can do linear reciprocating motion, valve rod is namely allowed to promote valve core movement, just can regulate the flow of cartridge valve, also the object of the injection speed controlling injection oil cylinder can just be reached, and the motion of nut is by driven by servomotor, the injection speed or the pressure that control injection oil cylinder accurately can be realized, and there is no some problems of electro-hydraulic proportional flow cartridge valve yet.
Embodiment:
As shown in Figure 1, a kind of pilot valve for die casting machine, comprise cartridge valve, cartridge valve comprises valve body 21, spool 22 and valve rod 23, valve rod 23 is connected with a push rod 3, and the other end of the relative valve rod 23 of push rod 3 is driving end, and driving end is provided with outside thread, outside thread is arranged with nut 4, nut is provided with the internal thread mated with outside thread; Push rod is provided with the stop pin 31 preventing push rod from rotating and the draw-in groove (draw-in groove does not illustrate in the drawings) coordinated with stop pin 31, and the width of draw-in groove and the diameter of stop pin match, and the stroke of its length and spool matches; Nut 4 is fixedly attached on the output shaft of an actuating motor 5.
Cartridge valve is that a kind of valve core structure is simple, be active in one's movements, the hydraulic control valve of good airproof performance, and its through-current capacity is high, latus rectum is large, is mainly used in flow control (also can be used for other as commutation etc., but its structural change being little), this is that those skilled in the art are accessible, no longer describes in detail.
Cartridge valve in the utility model comprises valve body 21, spool 22 and valve rod 23, and spool and valve rod link together, and valve rod stretches out outside valve body, by pushing up or drawing valve rod, makes valve core movement, and the output flow of cartridge valve just can be made to change.
As shown in Figure 2, injection oil cylinder 7 (comprising pressurizing cylinder 71) in die casting machine, need installation 2 pilot valves 1, one for controlling the fast shot speed of injection oil cylinder (also known as the two-speed that shoots material, also be connected with two-speed accumulator 8) simultaneously, a pressurizing cylinder (being simultaneously also connected with booster-type accumulator 9) being connected to injection oil cylinder, controls boost pressure.
In the present embodiment, pilot valve 1 is also provided with the pilot valve 6 controlling cartridge valve opening and closing.The effect of pilot valve 6 is herein exactly a selector valve in fact, by commutation, hydraulic oil is introduced cartridge valve, namely opens cartridge valve.
In the present embodiment, outside thread is a kind of motion thread.Convert rectilinear movement to by the rotation of screw thread, its precision is very high, even V thread screw, also be to meet required precision (rotating the girth of a circle much larger than pitch), adopting motion thread, without being suspected to have higher precision, and rotating more smooth and easy.
In the present embodiment, motion thread is trapezoidal thread.Compare the motion threads such as square threaded form, trapezoidal thread processing is more convenient, not easy to wear.
In the present embodiment, actuating motor 5 is AC servo motor.AC servo motor is run more reliable, controls more convenient.
In the above-described embodiments, a kind of pilot valve for die casting machine that the utility model provides, comprise cartridge valve, the valve rod of cartridge valve is connected with a push rod, push rod is provided with outside thread and nut, push rod is provided with the stop pin preventing push rod from rotating simultaneously, like this when nut rotation (clockwise or counterclockwise), push rod can do linear reciprocating motion, valve rod is namely allowed to promote valve core movement, just can regulate the flow of cartridge valve, also just can reach and control the injection speed of injection oil cylinder or the object of pressure, and the motion of nut is by driven by servomotor, the injection speed or the pressure that control injection oil cylinder accurately can be realized.Its beneficial effect is: injection speed or the pressure that can control die casting machine accurately, and structure is simple, reliable, easy to maintenance.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (5)
1. the pilot valve for die casting machine, it is characterized in that, comprise cartridge valve, described cartridge valve comprises valve body, spool and valve rod, described valve rod is connected with a push rod, and the other end of the relatively described valve rod of described push rod is driving end, and described driving end is provided with outside thread, described outside thread is arranged with nut, and described nut is provided with the internal thread mated with described outside thread; Described push rod is provided with the stop pin preventing push rod from rotating and the draw-in groove coordinated with described stop pin, and the width of described draw-in groove and the diameter of described stop pin match, and the stroke of its length and described spool matches; Described nut is fixedly attached on the output shaft of an actuating motor.
2. a kind of pilot valve for die casting machine according to claim 1, is characterized in that, described pilot valve is also provided with the pilot valve controlling described cartridge valve opening and closing.
3. a kind of pilot valve for die casting machine according to claim 1, is characterized in that, described outside thread is a kind of motion thread.
4. a kind of pilot valve for die casting machine according to claim 3, is characterized in that, described motion thread is trapezoidal thread.
5. a kind of pilot valve for die casting machine according to claim 1, is characterized in that, described actuating motor is AC servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585739.9U CN204284051U (en) | 2014-10-10 | 2014-10-10 | A kind of pilot valve for die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585739.9U CN204284051U (en) | 2014-10-10 | 2014-10-10 | A kind of pilot valve for die casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204284051U true CN204284051U (en) | 2015-04-22 |
Family
ID=52867216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420585739.9U Expired - Fee Related CN204284051U (en) | 2014-10-10 | 2014-10-10 | A kind of pilot valve for die casting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204284051U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436468A (en) * | 2015-11-30 | 2016-03-30 | 宜兴市佳晨压铸机制造有限公司 | Automatic regulating device for high injection speed of die-casting machine |
| CN105945256A (en) * | 2016-04-27 | 2016-09-21 | 中山市德工机械科技有限公司 | Real-time motor control device for hitting speed of die-casing machine |
| CN105422518B (en) * | 2015-12-16 | 2017-08-04 | 佛山联升压铸科技有限公司 | Die casting machine fast shot loop hydraulic system |
-
2014
- 2014-10-10 CN CN201420585739.9U patent/CN204284051U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436468A (en) * | 2015-11-30 | 2016-03-30 | 宜兴市佳晨压铸机制造有限公司 | Automatic regulating device for high injection speed of die-casting machine |
| CN105422518B (en) * | 2015-12-16 | 2017-08-04 | 佛山联升压铸科技有限公司 | Die casting machine fast shot loop hydraulic system |
| CN105945256A (en) * | 2016-04-27 | 2016-09-21 | 中山市德工机械科技有限公司 | Real-time motor control device for hitting speed of die-casing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204284051U (en) | A kind of pilot valve for die casting machine | |
| CN102259178B (en) | Servo mechanism for high-energy saving die casting machine | |
| CN204396809U (en) | Evaporative pattern bubbles model soaking barrel | |
| CN105522141A (en) | Piston gravity casting machine | |
| CN105415731A (en) | Water hydraulic die-casting machine and hydraulic system thereof | |
| CN204276864U (en) | A kind of die casting machine oil-feeding control system | |
| CN204430270U (en) | The close pressure all-in-one of a kind of metal dust | |
| CN204565050U (en) | A kind of super large external form sand mold | |
| CN204486647U (en) | A kind of semi automatic mold output device | |
| CN203973970U (en) | The side shrinkage pool core-pulling device of LED Lamp cup shell injection mold | |
| CN205238442U (en) | Injection mold's hank tooth mechanism | |
| CN204052842U (en) | A kind of zinc alloy worm gear squeeze casting mould | |
| CN201922031U (en) | Two-open type metal type gravity casting machine | |
| CN205112264U (en) | In automatic structure of punching a hole of in -process of moulding plastics | |
| CN219133031U (en) | Limiting guide structure for double-color injection mold | |
| CN204276865U (en) | A kind of die casting machine range controlling mechanism | |
| CN209465633U (en) | A kind of connection cold-heading molding device of vertical shaft | |
| CN204209094U (en) | A kind of aluminium alloy guide pin bushing die casting | |
| CN204035557U (en) | A kind of operating means of mould bases | |
| CN217252073U (en) | Wear-resisting type multistation upgrades stamping device | |
| CN220659196U (en) | Opening and closing mechanism of metal casting production die | |
| CN204451049U (en) | Composite die group | |
| CN204209093U (en) | Multiple-grooved aluminium alloy disk die-casting forming die | |
| CN204209096U (en) | The die casting of the dark Tapered Cup of a kind of aluminium alloy | |
| CN205798339U (en) | A kind of aluminium alloy wheel hub ejector pin of die set return structure of improvement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20171010 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |