CN104015319A - Hydraulic system and control method of the same - Google Patents
Hydraulic system and control method of the same Download PDFInfo
- Publication number
- CN104015319A CN104015319A CN201410213977.1A CN201410213977A CN104015319A CN 104015319 A CN104015319 A CN 104015319A CN 201410213977 A CN201410213977 A CN 201410213977A CN 104015319 A CN104015319 A CN 104015319A
- Authority
- CN
- China
- Prior art keywords
- mouth
- executive component
- way
- oil
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a hydraulic system and a control method of the same. The hydraulic system comprises a two-way executive component, a one-way executive component linked with the two-way executive component with an oil inlet connected to a pressure source and an oil outlet connected to an oil spilling mouth, a three-position four-way valve with a P mouth connected to the pressure source, a T mouth connected to an oil tank, an A mouth connected to a first direction oil mouth of the two-way executive component and a B mouth connected to a second direction oil mouth of the two-way executive component, a first backpressure unit connected between the second direction oil mouth of the two-way executive component and the oil tank, and a second backpressure unit connected between the oil inlet of the one-way executive component and the pressure source and provided with a control oil path. When the three-position four-way valve is in a middle position, the P mouth and B mouth are blocked; and the A mouth is communicated to the T mouth. When the three-position four-way valve is in a first position, the P mouth is communicated to the A mouth; and the T mouth is communicated to the B mouth. When the three-position four-way valve is in a second position, the P mouth is communicated to the B mouth; and the T mouth is communicated to the A mouth. The hydraulic system reduces energy loss, increases work efficiency of the oil path, is simple in structure and can be implemented easily.
Description
Technical field
The present invention relates to a kind of technical field of injection molding, relate in particular to a kind of a kind of hydraulic system for Shooting Technique and the control method of hydraulic system.
Background technology
Injection machine has another name called injection (mo(u)lding) machine or injector.It is to utilize mould for plastics to make the main former of the plastic products of various shapes thermoplastic or thermosetting plastics.Existing injection machine generally adopts hydraulic control, all maximum at the power of infusion cycles process need and the energy loss of generation, and the back pressure in the injection of existing injection machine, preformed loop generally realizes by major loop pressure, cause energy loss, be unfavorable for the smooth and easy operation of whole oil circuit.
Summary of the invention
The problems referred to above that exist for existing injection machine, the main purpose of technical scheme provided by the invention is: a kind of Hydraulic System for Injection Moulding Machine of realizing bypass backpressure regulation is provided.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of hydraulic system, is applied to injection machine, wherein, comprising:
Two-way executive component, in order to carry out injection technique;
Unidirectional executive component, in order to carry out preformed technique, by a frame for movement and described two-way executive component interlock, and the oil-in Bonding pressure source of described unidirectional executive component, oil-out and oil spilling mouth connect fuel tank;
Three-position four-way valve, P mouth Bonding pressure source, T mouth connects fuel tank, and A mouth connects the first direction hydraulic fluid port of described two-way executive component, and B mouth connects the second direction hydraulic fluid port of described execution bilateral element;
The first back pressure unit, is connected between the second direction hydraulic fluid port and fuel tank of described two-way executive component;
Second is pressed unit, is connected between the oil-in and pressure source of described unidirectional executive component, and arranges between the oil-out and fuel tank that an oil circuit control is connected in described unidirectional executive component;
Described three-position four-way valve is P mouth and the blocking-up of B mouth in the time of meta, A mouth and T mouth UNICOM, P mouth and A mouth UNICOM in the time of primary importance, T mouth and B mouth UNICOM, P mouth and B mouth UNICOM in the time of the second place, T mouth and A mouth UNICOM.
Another aspect of the present invention, described first is pressed unit to comprise the first inserted valve with throttle orifice, the A mouth of described the first inserted valve is connected on the branch road between second direction hydraulic fluid port and the fuel tank of described two-way executive component, the B mouth of described the first inserted valve connects fuel tank, the X mouth of described the first inserted valve connects the P mouth of one the 1 position switching valve, the T mouth of described the one or two position switching valve connects fuel tank, and the A mouth of described the one or two position switching valve connects fuel tank by a solenoid-operated proportional pressure-control valve.
Another aspect of the present invention, described second is pressed unit to comprise the second inserted valve, the A mouth of described the second inserted valve connects the oil-in of described unidirectional executive component, the B mouth Bonding pressure source of described the second inserted valve, the X mouth of described the second inserted valve connects the A mouth of one the 22 position switching valve, the P mouth Bonding pressure source of described the two or two position switching valve, the T mouth of described the two or two position switching valve connects fuel tank.
Another aspect of the present invention, described two-way executive component is the oil cylinder that pair of parallel arranges in the same way, the rodless cavity hydraulic fluid port of described oil cylinder is described first direction hydraulic fluid port; The rod chamber hydraulic fluid port of described oil cylinder is described second direction hydraulic fluid port.
Another aspect of the present invention, described unidirectional executive component is hydraulic motor.
Another aspect of the present invention, described hydraulic motor is connected a pair of described oil cylinder and is realized interlock by a screw rod.
A control method for hydraulic system, wherein, is applied to above-mentioned hydraulic system, comprises the following steps:
Step 1, control described three-position four-way valve in primary importance and in the second place to control described two-way executive component and the action of described unidirectional executive component;
Step 2, controls described three-position four-way valve in meta, makes described two-way executive component and described unidirectional executive component stop action;
Step 3, controls described the one or two position switching valve commutation, and controls described solenoid-operated proportional pressure-control valve action, forms back pressure in described the first back pressure unit, and controls described the two or two position switching valve and commutate and pressed unit to form back pressure in described second.
By the enforcement to technical solution of the present invention, can obtain following technique effect:
1, major loop pressure back pressure is become to bypass backpressure regulation, reduce energy loss, improve oil circuit operating efficiency;
2, can transform existing injection machine;
3, simple in structure easy to implement.
Brief description of the drawings
Fig. 1 is the schematic diagram of hydraulic system of the present invention;
Fig. 2 is the FB(flow block) of the control method of hydraulic system of the present invention.
Detailed description of the invention
By specific embodiment, technical scheme of the present invention is described below, with the conflict free prerequisite of goal of the invention of the present invention under, the technical characterictic in embodiment and the embodiment hereinafter mentioning can combine mutually.
As shown in Figure 1, the invention provides a kind of hydraulic system, be applied to injection machine, wherein, comprising:
Two-way executive component 1;
Unidirectional executive component 2, links with two-way executive component 1 by a frame for movement 3, and the oil-in Bonding pressure source P of unidirectional executive component 2, and oil-out and oil spilling mouth connect fuel tank T;
Three-position four-way valve T1, P mouth Bonding pressure source P, T mouth connects fuel tank T, and A mouth connects the first direction hydraulic fluid port of two-way executive component 1, and B mouth connects the second direction hydraulic fluid port of carrying out bilateral element 1;
The first back pressure unit 4, is connected between the second direction hydraulic fluid port and fuel tank T of two-way executive component 1;
Second is pressed unit 5, is connected between the oil-in and pressure source P of unidirectional executive component 2, and arranges between the oil-out and fuel tank T that an oil circuit control is connected in unidirectional executive component 2;
Three-position four-way valve T1 is P mouth and the blocking-up of B mouth in the time of meta, A mouth and T mouth UNICOM, i.e. and the fuel tank T of first direction hydraulic fluid port UNICOM of two-way executive component, second direction hydraulic fluid port is pressed unit 4 to regulate back pressure by first.Three-position four-way valve T1 is P mouth and A mouth UNICOM in the time of primary importance, T mouth and B mouth UNICOM, P mouth and B mouth UNICOM in the time of the second place, T mouth and A mouth UNICOM, in the time of this two kinds of forms, two-way executive component is under operating state, two-way executive component in technique scheme is the injection executive component of injection machine, and in the time of two-way executive component action, injection machine is in inject state.
In a kind of embodiment of the present invention, first is pressed unit 4 to comprise the first inserted valve 41 with throttle orifice, the A mouth of the first inserted valve 41 is connected on the branch road between second direction hydraulic fluid port and the fuel tank T of two-way executive component 1, the B mouth of the first inserted valve 41 connects fuel tank T, the X mouth of the first inserted valve 41 connects the P mouth of one the 1 position switching valve 42, the T mouth of the one or two position switching valve 42 connects fuel tank T, and the A mouth of the one or two position switching valve 42 connects fuel tank T by a solenoid-operated proportional pressure-control valve 43.This embodiment is arranged at backpressure regulation in bypass, thereby has reduced the energy loss of working connection.
In a kind of embodiment of the present invention, second is pressed unit 5 to comprise the second inserted valve 51, the A mouth of the second inserted valve 51 connects the oil-in of unidirectional executive component 2, the B mouth Bonding pressure source P of the second inserted valve 51, the X mouth of the second inserted valve 51 connects the A mouth of one the 22 position switching valve 52, the P mouth Bonding pressure source P of the two or two position switching valve 52, the T mouth of the two or two position switching valve 52 connects fuel tank T.
In a kind of embodiment of the present invention, the oil cylinder that two-way executive component 1 arranges in the same way for pair of parallel, the rodless cavity hydraulic fluid port of oil cylinder is first direction hydraulic fluid port; The rod chamber hydraulic fluid port of oil cylinder is second direction hydraulic fluid port.
In a kind of embodiment of the present invention, unidirectional executive component 2 is hydraulic motor.
In a kind of embodiment of the present invention, hydraulic motor is connected a pair of oil cylinder and is realized interlock by a screw rod.
In technical scheme of the present invention, also comprise a kind of control method of hydraulic system, wherein, be applied to above-mentioned hydraulic system, as shown in Figure 2, comprise the following steps:
Step 1, controls three-position four-way valve and moves to control two-way executive component and unidirectional executive component in primary importance and in the second place; This process completes action of injection.
Step 2, controls three-position four-way valve in meta, makes two-way executive component and unidirectional executive component stop action; Now start preformed technique.
Step 3, controls the one or two position switching valve commutation, and controls the action of solenoid-operated proportional pressure-control valve, forms back pressure in the first back pressure unit, and controls the two or two position switching valve and commutate and pressed unit to form back pressure in second.
The above embodiments are only that part of the present invention embodies; can not contain of the present invention whole; on the basis of above-described embodiment and accompanying drawing; those skilled in the art can obtain more embodiment under the prerequisite of not paying creative work, and therefore these are not paid the embodiment obtaining under the prerequisite of creative work and all should be included in protection scope of the present invention.
Claims (7)
1. a hydraulic system, is applied to injection machine, it is characterized in that, comprising:
Two-way executive component;
Unidirectional executive component, by a frame for movement and described two-way executive component interlock, and the oil-in Bonding pressure source of described unidirectional executive component, oil-out and oil spilling mouth connect fuel tank;
Three-position four-way valve, P mouth Bonding pressure source, T mouth connects fuel tank, and A mouth connects the first direction hydraulic fluid port of described two-way executive component, and B mouth connects the second direction hydraulic fluid port of described execution bilateral element;
The first back pressure unit, is connected between the second direction hydraulic fluid port and fuel tank of described two-way executive component;
Second is pressed unit, is connected between the oil-in and pressure source of described unidirectional executive component, and arranges between the oil-out and fuel tank that an oil circuit control is connected in described unidirectional executive component;
Described three-position four-way valve is P mouth and the blocking-up of B mouth in the time of meta, A mouth and T mouth UNICOM, P mouth and A mouth UNICOM in the time of primary importance, T mouth and B mouth UNICOM, P mouth and B mouth UNICOM in the time of the second place, T mouth and A mouth UNICOM.
2. hydraulic system as claimed in claim 1, it is characterized in that, described first is pressed unit to comprise the first inserted valve with throttle orifice, the A mouth of described the first inserted valve is connected on the branch road between second direction hydraulic fluid port and the fuel tank of described two-way executive component, the B mouth of described the first inserted valve connects fuel tank, the X mouth of described the first inserted valve connects the P mouth of one the 1 position switching valve, the T mouth of described the one or two position switching valve connects fuel tank, and the A mouth of described the one or two position switching valve connects fuel tank by a solenoid-operated proportional pressure-control valve.
3. hydraulic system as claimed in claim 2, it is characterized in that, described second is pressed unit to comprise the second inserted valve, the A mouth of described the second inserted valve connects the oil-in of described unidirectional executive component, the B mouth Bonding pressure source of described the second inserted valve, the X mouth of described the second inserted valve connects the A mouth of one the 22 position switching valve, the P mouth Bonding pressure source of described the two or two position switching valve, and the T mouth of described the two or two position switching valve connects fuel tank.
4. hydraulic system as claimed in claim 3, is characterized in that, described two-way executive component is the oil cylinder that pair of parallel arranges in the same way, and the rodless cavity hydraulic fluid port of described oil cylinder is described first direction hydraulic fluid port; The rod chamber hydraulic fluid port of described oil cylinder is described second direction hydraulic fluid port.
5. hydraulic system as claimed in claim 4, is characterized in that, described unidirectional executive component is hydraulic motor.
6. hydraulic system as claimed in claim 5, is characterized in that, described hydraulic motor is connected a pair of described oil cylinder and realized interlock by a screw rod.
7. a control method for hydraulic system, is characterized in that, is applied to hydraulic system as claimed in claim 3, comprises the following steps:
Step 1, control described three-position four-way valve in primary importance and in the second place to control described two-way executive component and the action of described unidirectional executive component;
Step 2, controls described three-position four-way valve in meta, makes described two-way executive component and described unidirectional executive component stop action;
Step 3, controls described the one or two position switching valve commutation, and controls described solenoid-operated proportional pressure-control valve action, forms back pressure in described the first back pressure unit, and controls described the two or two position switching valve and commutate and pressed unit to form back pressure in described second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213977.1A CN104015319A (en) | 2014-05-20 | 2014-05-20 | Hydraulic system and control method of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213977.1A CN104015319A (en) | 2014-05-20 | 2014-05-20 | Hydraulic system and control method of the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104015319A true CN104015319A (en) | 2014-09-03 |
Family
ID=51432467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410213977.1A Pending CN104015319A (en) | 2014-05-20 | 2014-05-20 | Hydraulic system and control method of the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104015319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872857A (en) * | 2019-11-29 | 2020-03-10 | 徐州徐工液压件有限公司 | Multifunctional energy recovery device and hydraulic excavator system carrying same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2756432Y (en) * | 2003-05-27 | 2006-02-08 | 郑学渊 | Pressure booster for closing mould oil path system of rotary disc or vertical injection moulding machine |
| DE102005048787A1 (en) * | 2004-10-12 | 2006-05-04 | Engel Austria Gmbh | Injection molding of thin-walled articles, using stored energy from simultaneous compression of molten plastics, hydraulic oil and pressurized gas on expansion to cause rapid mold filling |
| CN101396862A (en) * | 2008-10-15 | 2009-04-01 | 无锡海天机械有限公司 | Injection oil system of injection molding machine |
| CN203994580U (en) * | 2014-05-20 | 2014-12-10 | 宁波职业技术学院 | A kind of hydraulic system |
-
2014
- 2014-05-20 CN CN201410213977.1A patent/CN104015319A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2756432Y (en) * | 2003-05-27 | 2006-02-08 | 郑学渊 | Pressure booster for closing mould oil path system of rotary disc or vertical injection moulding machine |
| DE102005048787A1 (en) * | 2004-10-12 | 2006-05-04 | Engel Austria Gmbh | Injection molding of thin-walled articles, using stored energy from simultaneous compression of molten plastics, hydraulic oil and pressurized gas on expansion to cause rapid mold filling |
| CN101396862A (en) * | 2008-10-15 | 2009-04-01 | 无锡海天机械有限公司 | Injection oil system of injection molding machine |
| CN203994580U (en) * | 2014-05-20 | 2014-12-10 | 宁波职业技术学院 | A kind of hydraulic system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872857A (en) * | 2019-11-29 | 2020-03-10 | 徐州徐工液压件有限公司 | Multifunctional energy recovery device and hydraulic excavator system carrying same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203548373U (en) | Servo hydraulic system | |
| CN100553934C (en) | The injection machine system of the compound control of mechanical electronic hydraulic | |
| CN105351263A (en) | Differential hydraulic cylinder control loop | |
| CN202037828U (en) | Numerical control molten gel backpressure circuit for injection molding machine | |
| CN102744345B (en) | Hydraulic system of buffering cylinder of forging manipulator | |
| CN203384136U (en) | Speed exchange circuit with parallel speed control valves | |
| CN201579966U (en) | Proportion back pressure hydraulic loop for injection machine | |
| CN104015319A (en) | Hydraulic system and control method of the same | |
| CN203994580U (en) | A kind of hydraulic system | |
| CN103496133B (en) | A kind of injection machine oil path control system and injection machine | |
| CN104476741B (en) | Oil hydraulic circuit for synchronously controlling mould locking oil cylinder and mould transferring oil cylinder of injection molding machine | |
| CN104564854A (en) | Multi-executer heavy load digital hydraulic loop based on high-voltage common rail cabin | |
| CN103711172B (en) | The quantitative combining hydraulic system of loader four pump | |
| CN204054552U (en) | Two plate hydraulic injection molding machine normal pressures, supercharging, high-voltage lock mould loop | |
| CN208232272U (en) | A kind of hydraulic control device that novel injection moulding machine unlocking mold is synchronous with melten gel | |
| CN203081878U (en) | Hydraulic control system and engineering machine | |
| CN102962972B (en) | Hydraulic system of injection molding machine with servo pump | |
| CN102837407A (en) | Hydraulic control system for implementing high-speed injection and real-time start | |
| CN204172294U (en) | A kind of No leakage hydraulic pressure self-locking circuit for injection moulding machine mode-locking | |
| CN201950795U (en) | Hydraulic system of rain boots injection molding machine | |
| CN201579968U (en) | Pre-plasticizing mould-clearing hydraulic loop of injection machine | |
| CN204061363U (en) | Hydraulic type injection machine fast and stable injection hydraulic pressure performs loop | |
| CN202114897U (en) | High-speed injection circuit with buffering function for hydraulic injection moulding machine | |
| CN205329745U (en) | Two operation mode control systems of leveler | |
| CN204851560U (en) | Positive flow control electric proportional pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140903 |