CN105156369A - Novel oscillating cylinder double-back-pressure system of extruding and casting device - Google Patents

Novel oscillating cylinder double-back-pressure system of extruding and casting device Download PDF

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Publication number
CN105156369A
CN105156369A CN201510571325.XA CN201510571325A CN105156369A CN 105156369 A CN105156369 A CN 105156369A CN 201510571325 A CN201510571325 A CN 201510571325A CN 105156369 A CN105156369 A CN 105156369A
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CN
China
Prior art keywords
valve
pressure
oil
leather bag
bag storage
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.)
Pending
Application number
CN201510571325.XA
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Chinese (zh)
Inventor
罗振宇
谌晓勇
周银鹏
罗云斌
赵华
曾小勤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intelligent Light Alloy Precise Forming Science And Technology Ltd Of Speeding In Suzhou
Original Assignee
Intelligent Light Alloy Precise Forming Science And Technology Ltd Of Speeding In Suzhou
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Application filed by Intelligent Light Alloy Precise Forming Science And Technology Ltd Of Speeding In Suzhou filed Critical Intelligent Light Alloy Precise Forming Science And Technology Ltd Of Speeding In Suzhou
Priority to CN201510571325.XA priority Critical patent/CN105156369A/en
Publication of CN105156369A publication Critical patent/CN105156369A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a novel oscillating cylinder double-back-pressure system of an extruding and casting device. The system comprises a one-way valve, a decompression valve, a leather bag storage, a pressure valve, an electromagnetic reversing valve, a sequence valve and an oil cylinder. The one-way valve is connected with an oil inlet of the decompression valve, and an oil outlet of the decompression valve is connected with the leather bag storage. Meanwhile, a branch is connected between the decompression valve and the leather bag storage and connected with the P end of the electromagnetic valve, and the A end of the electromagnetic valve is connected with an oil cylinder rodless cavity. An oil cylinder rod cavity is connected with an oil inlet of the sequence valve, an oil outlet of the sequence valve is connected with the B end of the electromagnetic reversing valve, and the T end of the electromagnetic reversing valve is connected with the pressure valve. When the set pressure intensity of the sequence valve is reached in the movement process of a piston rod in the oil cavity rod cavity, the sequence valve reverses, pressure oil enters the pressure valve, and under the condition that the area of the piston rod is larger than the pressure difference, the piston rod is continuously pushed to move forwards. The rodless cavity is adopted for storing energy, mechanical properties and compactness of a casting can be improved through the back pressure oil return hindering method, and application prospects are good.

Description

The two back pressure system of a kind of Novel extrusion foundry equipment swinging cylinder
Technical field
Patent of the present invention belongs to foundry machinery field, particularly relates to the two back pressure system of a kind of extrusion casting apparatus swinging cylinder.
Background technique
Along with the development of casting industry, automobile industry requires more and more higher to performance gradually and porosity ratio.Lightweight be after machinery and the development trend of automobile industry, while casting thickness is thinning, the intensity of foundry goods be ensured, need badly and develop high-strength thin-walled foundry goods.Extrusion casint is a kind of novel casting technique, and Japan maintains the leading position in the level of Extrution casting technique and equipment, and China is also in the ground zero stage.For horizontal type extruding foundry equipment, employing be the form of vertical injection, horizontal die sinking, injection cylinder can tilt to wave, and feeds in raw material after inclination, ajusts rear injection.What the adjusting mechanism that common problem is traditional adopted is that piston rod promotes to swing, due to oscillating oil cylinder oil pressure cntrol inaccuracy and the large problem of piston rod frictional force, process medium velocity is ajusted not steady after causing barrel to add aluminium liquid, fluctuate larger, can cause in wave process rolling up gas in aluminium liquid, cause the defect such as shrinkage porosite, Sha Kong, affect the consistency of foundry goods.
Summary of the invention
1, object of the present invention.
The present invention is directed to the difficult problem that in traditional horizontal type extruding foundry equipment swinging cylinder swing process, oil pressure is unstable and piston rod frictional force is larger, and propose the two back pressure system of a kind of extrusion casting apparatus swinging cylinder, adopt rodless cavity energy storage, the way that back pressure oil return is obstructed, swing process does not adopt piston rod to control, oil return increases a back pressure, ensures the stable of pressure.
2, the technical solution adopted in the present invention.
The two back pressure system of extrusion casting apparatus swinging cylinder, comprises one-way valve, reduction valve, leather bag storage, pressure valve, electromagnetic steering valve, sequence valve, oil cylinder;
One-way valve connects reduction valve filler opening, and the oil outlet of reduction valve connects leather bag storage, also connects one along separate routes simultaneously, hold be connected with the P of solenoid valve between reduction valve and leather bag storage, and the A end of solenoid valve connects oil cylinder rodless cavity; The pressure oil of system fuel tank passes through one-way valve, reduction valve successively to leather bag storage, and when leather bag storage is full of oil, pressure oil can by enter the P end of solenoid valve along separate routes, and solenoid valve commutates, then the A that enter solenoid valve holds, and is held enter oil cylinder rodless cavity again by A;
The rod chamber of oil cylinder is connected with the filler opening of sequence valve, and the oil outlet of sequence valve is held with the B of electromagnetic steering valve and is connected, and the T end of electromagnetic steering valve is connected with pressure valve; The pressure of sequence valve setting is reached in piston rod movement process in rod chamber in oil cylinder, sequence valve commutates, and pressure oil is transmitted to the T end of solenoid valve by the B end of solenoid valve, then enters pressure valve, when rod areas specific pressure difference is large, can continue to promote piston rod progressive motion.
Further in specific embodiment, between described reduction valve and leather bag storage, also comprise one connect stop valve along separate routes.
Further in specific embodiment, be also provided with pressure gauge at the filler opening place of leather bag storage and pressure valve.
Further in specific embodiment, the pressure of the pressure oil of system oil cylinder input is 14-16MPa; The pressure that sequence valve (8) sets is 2-4MPa; The pressure that pressure valve (6) sets is 4-6MPa.
3, beneficial effect of the present invention.
(1) the present invention adopts rodless cavity energy storage, the method that back pressure oil return is obstructed, and swing process does not adopt piston rod to control, and oil return increases a back pressure, ensures the stable of pressure.
(2) the present invention is by the setting of reduction valve, leather bag storage, solenoid directional control valve and sequence valve, orderly for pressure oil can be carried out work operation in whole equipment.
(3) though the present invention be subject to external resistance larger time, a stable speed still can be kept to advance.
(4) the invention solves traditional swinging mechaism bumpy motion, foundry goods porosity ratio be high, the problem of volume gas, mechanical property and the consistency of foundry goods can be improved, have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the two back pressure system action schematic diagram of Novel extrusion foundry equipment swinging cylinder
Patent of the present invention is further illustrated below in conjunction with accompanying drawing.
Wherein: 1. one-way valve, 2. reduction valve, 3. stop valve, 4. leather bag storage, 5. pressure gauge, 6. pressure valve, 7. solenoid directional control valve, 8. sequence valve, 9. oil cylinder, 10. pressure gauge.
Embodiment
In order to enable the auditor of Patent Office especially the public clearly understand technical spirit of the present invention and beneficial effect, claimant will elaborate below by way of example, but be not all the restriction to the present invention program to the description of embodiment, any conceive according to the present invention done be only pro forma but not substantial equivalent transformation and all should be considered as technological scheme category of the present invention.
Embodiment
As shown in Figure 1, for 400t horizontal type extruding equipment swinging cylinder control system, one-way valve 1, reduction valve 2, stop valve 3, leather bag storage 4, pressure gauge 5, pressure valve 6, electromagnetic steering valve 7, sequence valve 8, oil cylinder 9, pressure gauge 10 is comprised; The pressure of the pressure oil of system oil cylinder input is 14-16MPa, and the pressure that sequence valve 8 sets is 2-4MPa, and the pressure that pressure valve 6 sets is 4-6MPa.
One-way valve 1 connects reduction valve 2 filler opening, the oil outlet of reduction valve 2 connects leather bag storage 4, also connect one between reduction valve 2 and leather bag storage 4 along separate routes simultaneously, hold with the P of solenoid valve and be connected, the A end of solenoid valve 7 connects oil cylinder 9 rodless cavity, also comprises one and connect stop valve 3 along separate routes between described reduction valve 2 and leather bag storage 4.
The pressure oil of system fuel tank arrives leather bag storage 4 by one-way valve 1, reduction valve 2 successively, when leather bag storage 4 is full of oil, pressure oil can by entering the P end of solenoid valve along separate routes, and solenoid valve 7 commutates, enter the A end of solenoid valve 7 again, held by A and enter oil cylinder 9 rodless cavity again;
The rod chamber of oil cylinder 9 is connected with the filler opening of sequence valve 9, and the oil outlet of sequence valve 9 is held with the B of electromagnetic steering valve 7 and is connected, and the T end of electromagnetic steering valve 7 is connected with pressure valve; The pressure that sequence valve 9 sets is reached in piston rod movement process in rod chamber in oil cylinder 9, T end oil being transmitted to solenoid valve 7 is held in sequence valve commutation by the B of solenoid valve 7, then by pressure valve 6, when rod areas specific pressure difference is large, can continue to promote piston rod progressive motion.
The concrete motion flow of the two back pressure system of this Novel extrusion foundry equipment swinging cylinder is as follows:
System oil cylinder input 14-16MPa pressure oil enters leather bag accumulator 4 by one-way valve 1 reduction valve 2 and carries out energy storage, now leather bag 4 is full of oil, solenoid valve 7 commutates, pressure oil P enters A and namely enters oil cylinder 9 rodless cavity, piston rod movement, first the pressure 2-4MPa pressure that sequence valve 8 sets will be overcome, sequence valve commutates, now pressure valve 6 sets 4-6MPa, piston rod advances when the large pressure difference of area ratio is large, even if meeting resistance also can not action neglect fast suddenly slow, the Main Function of leather bag accumulator 4 is the fluctuation of pressure absorbing oil pump, provides stable fuel feeding.

Claims (6)

1. the two back pressure system of extrusion casting apparatus swinging cylinder, is characterized in that: comprise one-way valve (1), reduction valve (2), leather bag storage (4), pressure valve (6), electromagnetic steering valve (7), sequence valve (8), oil cylinder (9);
One-way valve (1) connects reduction valve (2) filler opening, the oil outlet of reduction valve (2) connects leather bag storage (4), also connect one between reduction valve (2) and leather bag storage (4) along separate routes simultaneously, hold be connected with the P of solenoid valve, the A end of solenoid valve (7) connects oil cylinder (9) rodless cavity; The pressure oil of system fuel tank passes through one-way valve (1), reduction valve (2) successively to leather bag storage (4), when leather bag storage (4) is full of oil, pressure oil can by entering the P end of solenoid valve along separate routes, solenoid valve (7) commutates, enter the A end of solenoid valve (7) again, held by A and enter oil cylinder (9) rodless cavity again;
The rod chamber of oil cylinder (9) is connected with the filler opening of sequence valve (9), and the oil outlet of sequence valve (9) is held with the B of electromagnetic steering valve (7) and is connected, and the T end of electromagnetic steering valve (7) is connected with pressure valve; The pressure that sequence valve (9) sets is reached in piston rod movement process in rod chamber in oil cylinder (9), sequence valve commutates, pressure oil is transmitted to the T end of solenoid valve (7) by the B end of solenoid valve (7), then pressure valve (6) is entered, when rod areas specific pressure difference is large, can continue to promote piston rod progressive motion.
2. the two back pressure system of extrusion casting apparatus swinging cylinder according to claim 1, is characterized in that: between described reduction valve (2) and leather bag storage (4), also comprise one connect stop valve (3) along separate routes.
3. the two back pressure system of extrusion casting apparatus swinging cylinder according to claim 1 and 2, is characterized in that: be also provided with pressure gauge (5,10) at the filler opening place of leather bag storage (4) and pressure valve (6).
4. the two back pressure system of extrusion casting apparatus swinging cylinder according to claim 1 and 2, is characterized in that: the pressure of the pressure oil of system oil cylinder input is 14-16MPa.
5. the two back pressure system of extrusion casting apparatus swinging cylinder according to claim 4, is characterized in that: the pressure that sequence valve (8) sets is 2-4MPa.
6. the two back pressure system of extrusion casting apparatus swinging cylinder according to claim 4, is characterized in that: the pressure that pressure valve (6) sets is 4-6MPa.
CN201510571325.XA 2015-09-10 2015-09-10 Novel oscillating cylinder double-back-pressure system of extruding and casting device Pending CN105156369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510571325.XA CN105156369A (en) 2015-09-10 2015-09-10 Novel oscillating cylinder double-back-pressure system of extruding and casting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510571325.XA CN105156369A (en) 2015-09-10 2015-09-10 Novel oscillating cylinder double-back-pressure system of extruding and casting device

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Publication Number Publication Date
CN105156369A true CN105156369A (en) 2015-12-16

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106424652A (en) * 2016-11-14 2017-02-22 苏州慧驰轻合金精密成型科技有限公司 Pressure control system and control method of middle-high-pressure casting equipment
CN110259769A (en) * 2019-05-27 2019-09-20 天津市天锻压力机有限公司 The electrohydraulic control system and forming technology of 3000T liquid-state die forging hydraulic press
CN113426981A (en) * 2021-08-26 2021-09-24 广东伊之密精密机械股份有限公司 Injection speed reducer and die casting equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001116006A (en) * 1999-10-19 2001-04-27 Hitachi Constr Mach Co Ltd Hydraulic circuit for multi-stage expansion arm
CN201347913Y (en) * 2008-12-25 2009-11-18 亨特尔(天津)科技开发有限公司 Novel cushion cylinder loop
CN101927284A (en) * 2009-06-19 2010-12-29 江都东升机械制造有限公司 Spinning head feed control oil passage for spinning machine
CN104828721A (en) * 2015-05-05 2015-08-12 中国水产科学研究院渔业机械仪器研究所 Self-balancing compensation system, marine crane and control method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001116006A (en) * 1999-10-19 2001-04-27 Hitachi Constr Mach Co Ltd Hydraulic circuit for multi-stage expansion arm
CN201347913Y (en) * 2008-12-25 2009-11-18 亨特尔(天津)科技开发有限公司 Novel cushion cylinder loop
CN101927284A (en) * 2009-06-19 2010-12-29 江都东升机械制造有限公司 Spinning head feed control oil passage for spinning machine
CN104828721A (en) * 2015-05-05 2015-08-12 中国水产科学研究院渔业机械仪器研究所 Self-balancing compensation system, marine crane and control method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106424652A (en) * 2016-11-14 2017-02-22 苏州慧驰轻合金精密成型科技有限公司 Pressure control system and control method of middle-high-pressure casting equipment
CN110259769A (en) * 2019-05-27 2019-09-20 天津市天锻压力机有限公司 The electrohydraulic control system and forming technology of 3000T liquid-state die forging hydraulic press
CN110259769B (en) * 2019-05-27 2020-09-25 天津市天锻压力机有限公司 Electro-hydraulic control system of 3000T liquid die forging hydraulic press and forming process
CN113426981A (en) * 2021-08-26 2021-09-24 广东伊之密精密机械股份有限公司 Injection speed reducer and die casting equipment

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Application publication date: 20151216

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