CN202367164U - Hydraulic system for box closing and opening mechanism of molding machine - Google Patents
Hydraulic system for box closing and opening mechanism of molding machine Download PDFInfo
- Publication number
- CN202367164U CN202367164U CN201120535223XU CN201120535223U CN202367164U CN 202367164 U CN202367164 U CN 202367164U CN 201120535223X U CN201120535223X U CN 201120535223XU CN 201120535223 U CN201120535223 U CN 201120535223U CN 202367164 U CN202367164 U CN 202367164U
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- oil cylinder
- cylinder
- valve
- nowel
- top box
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Abstract
The utility model relates to a hydraulic system for a box closing and opening mechanism of a molding machine. The hydraulic system comprises a pressure reducing valve, check valves, a three-position four-way electromagnetic directional valve, a three-position four-way electro-hydraulic directional valve, a one-way throttle valve, a one-way speed control valve, an upper box oil cylinder and a lower box oil cylinder, and is characterized in that: the cylinder diameter, travel and piston rod diameter of the upper box oil cylinder are the same as those of the lower box oil cylinder; a piston rod of the upper box oil cylinder is downward; the lower box oil cylinder is a dual-piston rod cylinder; the piston rods of the upper and lower box oil cylinders are connected and fixed on a rack; and the upper and lower box oil cylinders are connected to a left pressure oil way and a right pressure oil way respectively. The hydraulic system for the box closing and opening mechanism of the molding machine is scientific and rational in structural design; the synchronous movement of sand boxes is realized through the two oil cylinders of the same size; the boxes are opened after the lower box is opened by 6mm, so that damage to a formed sand mold is avoided; and the piston rods of the oil cylinders are fixed, and cylinder barrels move to save a space.
Description
Technical field
The utility model belongs to casting field, relates to full-automatic hulling modelling production line, especially a kind of moulding machine mould assembling and unpacking mechanism hydraulic system.
Background technology
In foundry production, moulding machine at first will be produced precision height, sand mold that the degree of packing is suitable, and this has just proposed very high requirement to the performance of moulding machine.At present, the sequence of movement of moulding machine is that moulding is carried out in upper and lower two synchronous mould assembling of sandbox, when unpacking, is not destroyed for guaranteeing already made sand mold, and nowel is opened 6mm downwards earlier, and upper and lower then case is opened synchronously, last top box rising 6mm.Owing in the practical operation, be difficult to realize opening synchronously of upper and lower case, cause damage easily to sand mold.
Summary of the invention
The purpose of the utility model is to overcome the weak point of prior art, and a kind of simple in structure, reasonable in design, safe and reliable, cost is low, pressurized effect is good moulding machine mould assembling and unpacking mechanism hydraulic system are provided.
The utility model realizes that the technical scheme of purpose is following:
A kind of moulding machine mould assembling and unpacking mechanism hydraulic system; Comprise pressure-reducing valve, check valve, 3-position 4-way solenoid directional control valve, 3-position 4-way electro-hydraulic reversing valve, one-way throttle valve, unidirectional flow speed control valve, top box oil cylinder and nowel oil cylinder; It is characterized in that: the cylinder diameter of top box oil cylinder and nowel oil cylinder, stroke, diameter of piston rod are all identical; Top box oil cylinder piston bar down; The nowel oil cylinder is a double piston-rod cylinder, and the piston rod of top box oil cylinder and nowel oil cylinder is fixedly connected on frame, and left and right two pressure oil circuits connect top box oil cylinder and nowel oil cylinder.
And; Said left pressure oil circuit connects two branch oil circuits again through pressure-reducing valve, 3-position 4-way solenoid directional control valve; Article one, the branch oil circuit links to each other with the cavity of resorption of top box oil cylinder and nowel oil cylinder through one-way throttle valve, links to each other with the epicoele of nowel oil cylinder behind another branch oil circuit process check valve, the unidirectional flow speed control valve.
And said right pressure oil circuit is divided into two oil circuits behind electro hydraulic valve, and a branch oil circuit links to each other with the epicoele of nowel oil cylinder, and another branch oil circuit links to each other with the epicoele of top box oil cylinder.
The advantage and the good effect of the utility model are:
Mould assembling of this moulding machine and unpacking mechanism hydraulic system structure design science are reasonable; Accomplish this function through two identical oil cylinders of size and realized being synchronized with the movement of sandbox; Nowel is opened 6mm earlier and is unpacked; Guaranteed that the sand mold of making is not destroyed, the oil cylinder piston bar fixed that cylinder barrel moves has saved the space.
Description of drawings
Fig. 1 is the hydraulic schematic diagram of mould assembling of the utility model moulding machine and unpacking mechanism.
The specific embodiment
Below in conjunction with accompanying drawing and through specific embodiment the utility model is done further to detail, following examples are descriptive, are not determinate, can not limit the protection domain of the utility model with this.
A kind of moulding machine mould assembling and unpacking mechanism hydraulic system; Comprise pressure-reducing valve 5,3-position 4-way solenoid directional control valve 6, electromagnetism check valve 7, one-way throttle valve 8, unidirectional flow speed control valve 9, electric liquid check valve 4, electro-hydraulic reversing valve 3, nowel oil cylinder 1, top box oil cylinder 2; The cylinder diameter of two oil cylinders, stroke, diameter of piston rod are all identical; Top box oil cylinder piston bar down, the nowel oil cylinder is a double piston-rod cylinder, the piston rod of two oil cylinders is fixedly connected on frame.
The pressure hydraulic fluid port front of 3-position 4-way solenoid directional control valve is provided with a pressure-reducing valve, is used to reduce unpacking pressure, and a branch oil circuit links to each other with the cavity of resorption of two oil cylinders respectively behind one-way throttle valve.Another minute, oil circuit linked to each other with the upper and lower chamber of nowel oil cylinder behind electromagnetism check valve, unidirectional flow speed control valve.
An electric liquid check valve is set before the pressure hydraulic fluid port of electro-hydraulic reversing valve, and two branch oil circuits connect the epicoele of nowel oil cylinder and the epicoele of top box oil cylinder respectively.
The operation principle of the utility model is:
Action one: 3YA gets; Get into the epicoele of nowel oil cylinder behind pressure oil P process electromagnetism check valve, the electro-hydraulic reversing valve, the cylinder barrel of nowel oil cylinder moves up, and the fluid of nowel oil cylinder cavity of resorption is pressed into the cavity of resorption of top box oil cylinder; The top box oil cylinder moves down, and accomplishes the mould assembling action this moment.
Action two: 2YA gets electric, and pressure oil T gets into the cavity of resorption of nowel oil cylinder and top box oil cylinder respectively behind pressure-reducing valve decompression, magnetic valve switching-over switching-over, one-way throttle valve.This moment, the nowel oil cylinder moved down, and it is no longer mobile that the cavity of resorption of top box oil cylinder has been full of fluid.Accomplish nowel this moment and open the 6mm action.
Action three: 4YA gets electric, gets into the epicoele of top box oil cylinder behind pressure oil T process check valve, the electro-hydraulic reversing valve, and the cylinder barrel of top box oil cylinder moves up, and the fluid of top box oil cylinder cavity of resorption is pressed into the cavity of resorption of nowel oil cylinder, and the nowel oil cylinder moves down.Accomplish the action of unpacking this moment.
Action four: 4YA, 1YA get; Get into the epicoele of top box oil cylinder behind the electric liquid check valve of pressure oil P process, the electro-hydraulic reversing valve; The cylinder barrel of top box oil cylinder continues to move up, the fluid that top box oil cylinder cavity of resorption is extruded oil sump tank behind one-way throttle valve, solenoid directional control valve.This moment, the top box oil cylinder backed on top, and supplied the 6mm that the nowel oil cylinder is opened earlier.
Claims (3)
1. a moulding machine mould assembling and unpacking mechanism hydraulic system; Comprise pressure-reducing valve, check valve, 3-position 4-way solenoid directional control valve, 3-position 4-way electro-hydraulic reversing valve, one-way throttle valve, unidirectional flow speed control valve, top box oil cylinder and nowel oil cylinder; It is characterized in that: the cylinder diameter of top box oil cylinder and nowel oil cylinder, stroke, diameter of piston rod are all identical; Top box oil cylinder piston bar down; The nowel oil cylinder is a double piston-rod cylinder, and the piston rod of top box oil cylinder and nowel oil cylinder is fixedly connected on frame, and left and right two pressure oil circuits connect top box oil cylinder and nowel oil cylinder.
2. moulding machine mould assembling according to claim 1 and unpacking mechanism hydraulic system; It is characterized in that: said left pressure oil circuit connects two branch oil circuits again through pressure-reducing valve, 3-position 4-way solenoid directional control valve; Article one, the branch oil circuit links to each other with the cavity of resorption of top box oil cylinder and nowel oil cylinder through one-way throttle valve, links to each other with the epicoele of nowel oil cylinder behind another branch oil circuit process check valve, the unidirectional flow speed control valve.
3. moulding machine mould assembling according to claim 1 and unpacking mechanism hydraulic system; It is characterized in that: said right pressure oil circuit is divided into two oil circuits behind electro hydraulic valve; Article one, the branch oil circuit links to each other with the epicoele of nowel oil cylinder, and another branch oil circuit links to each other with the epicoele of top box oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120535223XU CN202367164U (en) | 2011-12-19 | 2011-12-19 | Hydraulic system for box closing and opening mechanism of molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120535223XU CN202367164U (en) | 2011-12-19 | 2011-12-19 | Hydraulic system for box closing and opening mechanism of molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202367164U true CN202367164U (en) | 2012-08-08 |
Family
ID=46590888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120535223XU Expired - Fee Related CN202367164U (en) | 2011-12-19 | 2011-12-19 | Hydraulic system for box closing and opening mechanism of molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202367164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734972A (en) * | 2017-01-09 | 2017-05-31 | 叶伟强 | A kind of hydraulic system being applied in hydraulic pressure automatic moulding machine |
| CN111715854A (en) * | 2020-07-03 | 2020-09-29 | 临沂市卓杰机械有限公司 | Up-down sand shooting molding machine and molding box hydraulic control system thereof |
-
2011
- 2011-12-19 CN CN201120535223XU patent/CN202367164U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734972A (en) * | 2017-01-09 | 2017-05-31 | 叶伟强 | A kind of hydraulic system being applied in hydraulic pressure automatic moulding machine |
| CN111715854A (en) * | 2020-07-03 | 2020-09-29 | 临沂市卓杰机械有限公司 | Up-down sand shooting molding machine and molding box hydraulic control system thereof |
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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: 20120808 Termination date: 20151219 |
|
| EXPY | Termination of patent right or utility model |