CN202943234U - Casting machine differential action hydraulic mechanism - Google Patents

Casting machine differential action hydraulic mechanism Download PDF

Info

Publication number
CN202943234U
CN202943234U CN 201220594734 CN201220594734U CN202943234U CN 202943234 U CN202943234 U CN 202943234U CN 201220594734 CN201220594734 CN 201220594734 CN 201220594734 U CN201220594734 U CN 201220594734U CN 202943234 U CN202943234 U CN 202943234U
Authority
CN
China
Prior art keywords
valve
differential
hydraulic
differential action
mould assembly
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
Application number
CN 201220594734
Other languages
Chinese (zh)
Inventor
汪俊成
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.)
BENGBU HUAYI DIE-CASTING MACHINERY MANUFACTURING Co Ltd
Original Assignee
BENGBU HUAYI DIE-CASTING MACHINERY MANUFACTURING Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BENGBU HUAYI DIE-CASTING MACHINERY MANUFACTURING Co Ltd filed Critical BENGBU HUAYI DIE-CASTING MACHINERY MANUFACTURING Co Ltd
Priority to CN 201220594734 priority Critical patent/CN202943234U/en
Application granted granted Critical
Publication of CN202943234U publication Critical patent/CN202943234U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a casting machine differential action hydraulic mechanism and relates to the field of machinery production and devices. A differential action control valve and a differential adjusting valve are added on a loop of an open and close type valve and connected. The differential action adjusting valve is connected with a hydraulic rear cavity oil inlet. The casting machine differential action hydraulic mechanism has the advantages of improving opening and closing speed of an open and close type oil cylinder under the condition that power of an oil pump is not changed, improving working efficiency, and saving power energy and increasing differential adjustment under the condition that system parameters are not changed, adjusting opening and closing speed of the differential action adjusting valve, bringing convenience for operation of operating staff, saving more power energy than a hydraulic mechanism without differential action, and facilitating operation.

Description

A kind of differential hydraulic mechanism of die casting machine
Technical field
The utility model relates to machine-building and apparatus field, relates in particular to a kind of differential hydraulic mechanism of die casting machine.
Background technology
The differential hydraulic system utilizes the hydraulic cylinder of the significant surface product moment of hydraulic system both sides, is under the condition that does not increase hydraulic pump capacity and power, realizes the effective way of rapid movement.Existing hydraulic power unit is not with difference structure, and when mould assembly oil cylinder mould assembly was worked, folding type valve was toward mould assembly oil cylinder back cavity fuel feeding, but mould assembly oil cylinder ante-chamber hydraulic oil is directly got back to inside the machine fuel tank.If change mould assembly speed speed, need to change systematic parameter, pressure and flow could change mould assembly speed.
The utility model content
For existing technical problem, the utility model provides a kind of differential hydraulic mechanism of die casting machine, has increased differential hydraulic mechanism on the basis of existing hydraulic power unit.The technical solution adopted in the utility model is: increase a differential-control valve and a differential control valve on the loop of folding type valve, and differential-control valve is connected with differential control valve; Differential control valve is connected with the oil-feed of hydraulic cylinder back cavity.
The utility model provides a kind of differential hydraulic mechanism of die casting machine, in the immovable situation of oil pump power, improves mould assembly oil cylinder folding type speed.Improve operating efficiency, saved power source.And increased differential adjusting, in the situation that do not change systematic parameter, can regulate the speed of mould assembly speed by differential control valve, facilitated operative employee's operation.Be not with differential comparing and more save power source, more convenient operation.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is mould assembly motion and open form motion structure schematic diagram.
The specific embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present utility model.
The valve regulation of oil pump feed passing ratio pressure flow enters folding type valve to required operating pressure and flow, increases a differential-control valve on the loop of folding type valve, and is connected with differential control valve, and differential control valve is connected with the oil-feed of hydraulic cylinder back cavity.Close when not working when differential-control valve, in the mould assembly oil cylinder, ante-chamber oil can not be got back to fuel tank, again flows into mould assembly oil cylinder back cavity by differential control valve.In system pressure and the immovable situation of flow, increased the flow of mould assembly oil cylinder back cavity, realize the differential speed accelerating motion.
Below in conjunction with Fig. 2, concrete description is done in mould assembly motion and open form motion.
1) mould assembly motion
The mould assembly motion is completed by three sequence of movement: low pressure, differential, high pressing-type.Make a concrete analysis of as follows:
A), low pressing-type: the ratio pressure flow valve switches to mould assembly pressure current value, and S2, S3, S7, S8 get electric, and the S1 dead electricity realizes low pressing-type motion.
Oil-feed 1: fuel tank → filter (2) → oil pump (1) → valve (6) → valve (7) → right position → valve of valve (4) (8) → mould assembly oil cylinder left chamber.
Oil return: the right position → valve of mould assembly right cavity of cylinder → valve (4) (5) → cooler (3) → fuel tank
B), differential mould assembly: ratio pressure flow valve (13) switches to mould assembly pressure current value, and S2, S3, S6 get electric, and S1, S8 dead electricity are hanged down pressing-type and finished, and differential mould assembly begins.Realize differential mould assembly motion
Oil-feed 1: fuel tank → filter (2) → oil pump (1) → valve (7) → right position → valve of valve (4) (8) → mould assembly oil cylinder left chamber.
Oil-feed 2: the right position → valve of mould assembly right cavity of cylinder → valve (4) (10) → valve (8) mould assembly oil cylinder left chamber
Mould assembly cylinder rod chamber hydraulic oil and oil pump feed converge realizes differential mould assembly motion.Differential velocity is regulated by valve (11).
C), high pressing-type: ratio pressure flow valve (7) switches to mould assembly pressure current value, and S2, S3, S6, S8 get electric, the S1 dead electricity, differential mould assembly finishes, high pressing-type begins.
Oil-feed: fuel tank → filter (2) → oil pump (1) → valve (7) → right position → valve of valve (4) (8) → mould assembly oil cylinder left chamber.
Oil return: the right position → valve of mould assembly right cavity of cylinder → valve (4) (5) → cooler (3) → fuel tank
2) open form motion
The open form motion is completed by three sequence of movement, and open form, constant speed open form, open form turn slow in termination soon at a slow speed, make a concrete analysis of as follows:
(1), open form motion at a slow speed: ratio pressure flow valve (13) switches the relevant pressure value, and S2, S3, S9 get electric, and S1, S6, S8 dead electricity realize open form motion at a slow speed.
Oil-feed: fuel tank → filter (2) → oil pump (1) → valve (7) → left position → mould assembly right cavity of cylinder of valve (9)
Oil return: the left position → cooler of the left chamber → valve of mould assembly oil cylinder (9) (3) → fuel tank
(2), constant speed open form motion: ratio pressure flow valve (7) switches the relevant pressure value, and S2, S3, S6, S9, S8 get electric, and the S1 dead electricity realizes the motion of constant speed open form.
Oil-feed: fuel tank → filter (2) → oil pump (1) → valve (7) → left position → mould assembly right cavity of cylinder of the left position → mould assembly right cavity of cylinder → valve of valve (4) (9);
Oil return: the left position → valve of the left chamber → valve of mould assembly oil cylinder (4) (5) → cooler (the 3) → left position → cooler of fuel tank → valve (9) (3) → fuel tank;
(3) open form turns slow in stopping soon: ratio pressure flow valve (7) switches the relevant pressure value, and S2, S3, S6, S8 get electric, and S1, S9 dead electricity realize that open form turns slow in stopping motion soon.
Oil-feed: fuel tank → filter (2) → oil pump (1) → valve (7) → left position → mould assembly right cavity of cylinder of valve (4);
Oil return: the left position → valve of the left chamber → valve of mould assembly oil cylinder (4) (5) → cooler (3) → fuel tank.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (1)

1. the differential hydraulic mechanism of a die casting machine is characterized in that: described differential hydraulic mechanism increases a differential-control valve and a differential control valve on the loop of folding type valve, described differential-control valve is connected with differential control valve; Described differential control valve is connected with the oil-feed of hydraulic cylinder back cavity.
CN 201220594734 2012-11-13 2012-11-13 Casting machine differential action hydraulic mechanism Expired - Fee Related CN202943234U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220594734 CN202943234U (en) 2012-11-13 2012-11-13 Casting machine differential action hydraulic mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220594734 CN202943234U (en) 2012-11-13 2012-11-13 Casting machine differential action hydraulic mechanism

Publications (1)

Publication Number Publication Date
CN202943234U true CN202943234U (en) 2013-05-22

Family

ID=48418949

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220594734 Expired - Fee Related CN202943234U (en) 2012-11-13 2012-11-13 Casting machine differential action hydraulic mechanism

Country Status (1)

Country Link
CN (1) CN202943234U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN101712207A (en) High performance and energy-saving double-acting hydrostatic press driven by servo motor
CN201769389U (en) Hydraulic press
CN202614611U (en) Negative pressure endurance test device
CN204267258U (en) A kind of piezoelectric pump overvoltage protective device based on magnetic rheology effect
CN101768990A (en) Hydraulic constant power control device for excavator
CN202461389U (en) Oil pressure machine and hydraulic system thereof
CN204739038U (en) Servo hydraulic system of sheet material bender
CN206346966U (en) A kind of Direct Drive Electro-hydraulic Servo System applied to asymmetric servo cylinder press
CN202943234U (en) Casting machine differential action hydraulic mechanism
CN203384136U (en) Speed exchange circuit with parallel speed control valves
CN102975345A (en) Power-saving control process for hot-working and forming of plastic
CN202480400U (en) Double-station pneumatic stamping machine
CN203308810U (en) Force-doubled type booster
CN203548387U (en) High-power direct drive type differential volume control electrohydraulic servo system
CN202116932U (en) Hydraulic system of pulp package pressing machine
CN202883506U (en) Pumping unit stable reversing hydraulic system
CN202479587U (en) Double-cylinder pneumatic plate-shearing machine
CN202402396U (en) Mass flow and digital type variable pump
CN201361927Y (en) Pressure adjusting and speed adjusting circuit for pressure-flow composite proportion in concrete block machine
CN201322013Y (en) Hydraulic system of bus bending machine
CN203248426U (en) Fast differential circuit
CN202811580U (en) Pressure servo controller of oil press
CN205715034U (en) Bulky refuse station push pedal impact-reducing hydraulic system
CN205918692U (en) Quick type double -acting cylinder
CN205823777U (en) A kind of air pressure trimmer

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130522

Termination date: 20141113