CN202056367U - Quick response type pilot overflow valve used for injection molding machine servo system - Google Patents
Quick response type pilot overflow valve used for injection molding machine servo system Download PDFInfo
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- CN202056367U CN202056367U CN2011202989528U CN201120298952U CN202056367U CN 202056367 U CN202056367 U CN 202056367U CN 2011202989528 U CN2011202989528 U CN 2011202989528U CN 201120298952 U CN201120298952 U CN 201120298952U CN 202056367 U CN202056367 U CN 202056367U
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Abstract
The utility model discloses a quick response type pilot overflow valve used for an injection molding machine servo system, which includes a body, a sleeve, a lifting rod, a return spring, a spring seat, an upper cover body, a needle valve seat, a split-flow seat, a needle valve, an adjusting rod, an iron screw cap, a pressure adjusting spring, an adjusting knob, a knob, a first inner hexagonal core plug, a second inner hexagonal core plug, a setscrew, and an inner hexagonal screw. The sleeve is mounted in the body, the lifting rod is mounted in the sleeve, the return spring is sleeved on the spring seat, and the upper cover body is fixed with the body through the inner hexagonal screw; the split-flow seat, the needle valve seat, the needle valve, the pressure adjusting spring and the adjusting rod are sequentially mounted in the upper cover body; the iron screw cap is screwed on the adjusting rod and is locked tightly with the upper cover body; the knob is screwed on the adjusting rod; the adjusting knob is screwed on the knob; the first inner hexagonal core plug and the second inner hexagonal core plug are fixed on the body; and the setscrew is connected with the split-flow seat. The quick response type pilot overflow valve shortens the reaction time, and enables the reaction time to meet the requirement of the injection molding machine servo system.
Description
Technical field
The utility model relates to a kind of pilot operated compound relief valve, particularly a kind of injection machine servo-system quick-reaction type pilot operated compound relief valve.
Background technique
Mostly the pilot operated compound relief valve that uses in pressurized oil system at present is traditional pilot operated compound relief valve, and its basic working principle is variable restrictor and pressure feedback.The delivery pressure of the pre compressed magnitude control pilot operated compound relief valve of the pressure adjusting spring by regulating pilot operated compound relief valve, and make this pressure keep constant substantially.Hinder the effect that the liquid of forming hinders half-bridge by the variable liquid resistance of pilot operated compound relief valve, the fixer that connects between main valve plug epicoele and the cavity of resorption, the flow area size of control main valve restriction, thus when flowing through main valve, fluid produces corresponding controlled pressure.
The speed of traditional pilot operated compound relief valve pressure feedback is generally slower, and during for the pilot operated compound relief valve that requires in new life's the injection machine servo-system faster, it does not often reach requirement.
The model utility content
Technical problem to be solved in the utility model provides a kind of injection machine servo-system quick-reaction type pilot operated compound relief valve, and it shortens the reaction time, makes it can satisfy the requirement of injection machine servo-system.
For solveing the technical problem, the utility model provides a kind of injection machine servo-system quick-reaction type pilot operated compound relief valve, it is characterized in that, it comprises body, sleeve, carry bar, Returnning spring, spring seat, the loam cake body, pintle valve seat, distributary base, needle-valve, regulating lever, the iron nut, pressure adjusting spring, adjust knob, knob, hexagonal plug in first, hexagonal plug in second, set screw, hexagon socket head cap screw, sleeve is contained in the body, carrying bar is contained in the sleeve, Returnning spring is enclosed within on the spring seat, the loam cake body is fixed by hexagon socket head cap screw and body, distributary base, pintle valve seat, needle-valve, pressure adjusting spring and regulating lever are contained in the loam cake body successively, the iron nut is spun on the regulating lever and with the loam cake body and locks, knob is spun on the regulating lever, adjusting knob is spun on the knob, hexagonal plug in first, the hexagonal plug is fixed on the body in second, and set screw is connected with distributary base.
Preferably, described Returnning spring and spring seat are contained in and carry in the bar.
Positive progressive effect of the present utility model is: the utility model shortens the reaction time, makes it can satisfy the requirement of injection machine servo-system.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural representation.
Embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
As shown in Figure 1, the utility model injection machine servo-system comprises body 1 with the quick-reaction type pilot operated compound relief valve, sleeve 2, carry bar 3, Returnning spring 4, spring seat 5, loam cake body 6, pintle valve seat 7, distributary base 8, needle-valve 9, regulating lever 10, iron nut 11, pressure adjusting spring 12, adjust knob 13, knob 14, hexagonal plug 15 in first, hexagonal plug 16 in second, set screw 17, hexagon socket head cap screw 27, sleeve 2 is contained in the body 1, carrying bar 3 is contained in the sleeve 2, carrying bar 3 can slide in sleeve 2, Returnning spring 4 is enclosed within on the spring seat 5, Returnning spring 4 and spring seat 5 are contained in to be carried in the bar 3, loam cake body 6 is fixing with body 1 by hexagon socket head cap screw 27, distributary base 8, pintle valve seat 7, needle-valve 9, pressure adjusting spring 12 and regulating lever 10 are contained in the loam cake body 6 successively, iron nut 11 is spun on the regulating lever 10 and with loam cake body 6 and locks, knob 14 is spun on the regulating lever 11, adjusting knob 13 is spun on the knob 14, hexagonal plug 15 in first, hexagonal plug 16 is fixed on the body 1 in second, and set screw 17 is connected with distributary base 8.The utility model can also comprise an O type circle 18, the 2nd O type circle 19, the 3rd O type circle 21, the 4th O type circle 22, the 5th O type circle 23, the first back bracket ring 24, the second back bracket ring 25, the 3rd back bracket ring 26, the one O type circle 18, the 2nd O type circle 19 are positioned at the below of carrying bar 3, the 3rd O type circle 21, the 4th O type circle 22, the 5th O type circle 23 are positioned at the side of carrying bar 3, the first back bracket ring 24 is positioned at loam cake body 6, the second back bracket ring 25 is adjacent with the 4th O type circle 22, and the 3rd back bracket ring 26 is adjacent with the 5th O type circle 23.
Wherein, body is a cast iron workpiece that runner design is arranged, and it has two runners, i.e. first flow P, the second runner T, and first flow P is the pressure oil inlet, the second runner T connects fuel tank.Sleeve is a cylindrical rod precision machining part, is fixed on the body the inside as carrying the parent that bar slides.Carrying bar is the precision machining part that adopts special high-quality steel, through quenching with Subsequent tempering, and the purpose of in sleeve, sliding and playing sealing and open oil circuit.Returnning spring is the precision machining part that two ends polish, and plays the effect that the bar closure is put forward in control.Spring seat is the workpiece through Quenching Treatment, is used to support Returnning spring.The loam cake body is the cast iron workpiece, as the body use of pilot operated compound relief valve.Pintle valve seat is the workpiece of cylindrical rod, is fixed on loam cake body the inside, combines the break-make of controlling guide's oil circuit with needle-valve.Distributary base is the workpiece of cylindrical rod, is fixed in the loam cake body relatively with pintle valve seat, and guide oil is played shunting action.Needle-valve is the grinding workpiece through Quenching Treatment, with the pintle valve seat control oil channel that is sealed.Regulating lever is a kind of workpiece, is used to adjust the pre compressed magnitude of pressure adjusting spring.The iron fixed by nut is used to prevent whole back-outs of regulating lever on body.Pressure adjusting spring is the precision machining part that a kind of two ends polish, and is used to make needle-valve to cooperate with pintle valve seat.Adjusting knob and knob is moulding, is the direct tool of manual tune pilot operated compound relief valve pressure.Hexagonal plug, the second interior hexagonal plug are fixed on the body in first, block oil circuit, enable when needs use the external pressure table.Set screw is the middle hexagon socket head cap screw that damping hole is arranged, and is used in and plays the throttling damping function in the control oil channel, and the diameter of damping hole is 1.2mm.The material of the one O type circle, the 2nd O type circle, the 3rd O type circle, the 4th O type circle, the 5th O type circle all is a nitrile rubber, is used for the seal action of oil circuit.The material of the first back bracket ring, the second back bracket ring, the 3rd back bracket ring all is a teflon, is used to prevent that an O type circle, the 2nd O type circle, the 3rd O type circle, the 4th O type circle, the 5th O type circle under high pressure coming off and causing leakage of oil.Hexagon socket head cap screw is 12.9 grades a high loading screw, is used for fixing between loam cake body and the body.The utility model shortens the reaction time, makes it can satisfy the requirement of injection machine servo-system.
When the pressure of first flow P was zero, pilot operated compound relief valve and main valve were closed under spring action, and no flow passes through in the pilot operated compound relief valve.When the pressure of first flow P raise, the pressure between the snout cavity of pilot operated compound relief valve, chamber, end X, the first damping hole A, the 3rd damping hole C, the first liquid block cavity D, the second liquid block cavity Y and guide's needle-valve and pintle valve seat in the cavity volume also rose gradually.When pressure met and exceeded the cracking pressure of pilot operated compound relief valve, pilot operated compound relief valve was opened, and fluid flow to the second runner T through the main valve plug middle part.This flow will produce pressure reduction at two ends during through the first damping hole A, make the pressure carried on the bar lower annular area pressure greater than the upper, annular area.But because the upper, annular area is greater than the bottom, and carries acting on the bar spring force is arranged, so the effect of making a concerted effort makes and carries bar and be in and close.Increase with the inlet pressure of pilot operated compound relief valve, when the power with Returnning spring of making a concerted effort just in time of the power of surging that produces balances each other, put forward the threshold state that bar is in unlatching on annulus area up and down.The flow that increases the damping hole of flowing through when inlet pressure again continues to increase, the needle-valve of pilot operated compound relief valve is opened pressure release, thereby carrying bar opens, at this moment the flow of system divides two-part, a part is returned the second runner T through the pilot operated compound relief valve chamber, and the most of flow then restriction through carrying bar and sleeve flows back to fuel tank.Because the regulating and controlling effect of valve, it is constant that the inlet pressure of valve keeps substantially.
The utility model can improve control port, because the volume of chamber, end X is bigger, can cancel the first damping hole A, when the variation in pressure of first flow P, chamber, the end X variation of induction pressure fast, in order to constitute the liquid resistance half-bridge of pilot operated compound relief valve, can increase by the second damping hole B simultaneously.
Though more than described embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these mode of executions.Therefore, protection domain of the present utility model is limited by appended claims.
Claims (2)
1. injection machine servo-system quick-reaction type pilot operated compound relief valve, it is characterized in that, it comprises body, sleeve, carry bar, Returnning spring, spring seat, the loam cake body, pintle valve seat, distributary base, needle-valve, regulating lever, the iron nut, pressure adjusting spring, adjust knob, knob, hexagonal plug in first, hexagonal plug in second, set screw, hexagon socket head cap screw, sleeve is contained in the body, carrying bar is contained in the sleeve, Returnning spring is enclosed within on the spring seat, the loam cake body is fixed by hexagon socket head cap screw and body, distributary base, pintle valve seat, needle-valve, pressure adjusting spring and regulating lever are contained in the loam cake body successively, the iron nut is spun on the regulating lever and with the loam cake body and locks, knob is spun on the regulating lever, adjusting knob is spun on the knob, hexagonal plug in first, the hexagonal plug is fixed on the body in second, and set screw is connected with distributary base.
2. injection machine servo-system quick-reaction type pilot operated compound relief valve as claimed in claim 1 is characterized in that described Returnning spring and spring seat are contained in to be carried in the bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202989528U CN202056367U (en) | 2011-08-17 | 2011-08-17 | Quick response type pilot overflow valve used for injection molding machine servo system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202989528U CN202056367U (en) | 2011-08-17 | 2011-08-17 | Quick response type pilot overflow valve used for injection molding machine servo system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202056367U true CN202056367U (en) | 2011-11-30 |
Family
ID=45016339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202989528U Expired - Fee Related CN202056367U (en) | 2011-08-17 | 2011-08-17 | Quick response type pilot overflow valve used for injection molding machine servo system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202056367U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574112A (en) * | 2013-10-22 | 2014-02-12 | 中国船舶重工集团公司第七�三研究所 | Pressure regulating valve for marine lubricating oil system |
| CN106438546A (en) * | 2016-10-20 | 2017-02-22 | 华侨大学 | Stable-pressure pilot overflow valve |
| CN110469703A (en) * | 2019-08-12 | 2019-11-19 | 王平武 | A kind of high sensitivity pilot operated compound relief valve |
-
2011
- 2011-08-17 CN CN2011202989528U patent/CN202056367U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574112A (en) * | 2013-10-22 | 2014-02-12 | 中国船舶重工集团公司第七�三研究所 | Pressure regulating valve for marine lubricating oil system |
| CN106438546A (en) * | 2016-10-20 | 2017-02-22 | 华侨大学 | Stable-pressure pilot overflow valve |
| CN106438546B (en) * | 2016-10-20 | 2018-07-20 | 华侨大学 | A kind of voltage stabilizing pilot operated compound relief valve |
| CN110469703A (en) * | 2019-08-12 | 2019-11-19 | 王平武 | A kind of high sensitivity pilot operated compound relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20190817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |