CN2829939Y - Injection appts. of die cast machine - Google Patents
Injection appts. of die cast machine Download PDFInfo
- Publication number
- CN2829939Y CN2829939Y CN 200520066370 CN200520066370U CN2829939Y CN 2829939 Y CN2829939 Y CN 2829939Y CN 200520066370 CN200520066370 CN 200520066370 CN 200520066370 U CN200520066370 U CN 200520066370U CN 2829939 Y CN2829939 Y CN 2829939Y
- Authority
- CN
- China
- Prior art keywords
- injection
- valve
- real
- shot
- control
- 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 - Lifetime
Links
Images
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides an injection apparatus of die cast machine which principally comprises an injection part, a hydraulic pressure part and a control part. A throttle valve which has high response and large flow quantity and controls the flow quantity of the working fluid of a lever cavity outlet of an injection cylinder and a real-time controller carrying out real-time control to the throttle valve are arranged, and real-time control is carried out to the speed of an injection process by the mode of combining oil inlet throttling and oil outlet throttling, so the function of closed-loop real-time control to uniform acceleration slow injection, multi-section injection, anti-flash deceleration, etc. The injection apparatus of the utility model is adopted to causes the injection process to have higher response speed, higher homeostasis accuracy and better art flexibility than the prior art.
Description
Technical field
The utility model relates to the injection device of die casting machine, especially a kind of injection device that can carry out real-time closed-loop control to injection process.
Background technology
Fig. 1 is the injection device system architecture schematic diagram of existing a kind of die casting machine, form by injection part, hydraulic part, control section, three grades of injections of the general employing of its injection process: the first order is initial and the slow shot stage, and the second level is that fast shot fills the type stage, and the third level is the supercharging packing stage.The speed control of injection process is adopted the mode of traditional oil-in throttling.
Fig. 1 also shows the mould part of die casting machine, comprises mould W1, die cavity W2, presses chamber W3.
Injection partly comprises injection punch head X1, connector X2, shot piston X3, shot sleeve X4, charged piston X5, pressurized cylinder X6.
Hydraulic part comprises oil pump Y1, check valve Y2, Y5, direction valve Y3, choke valve Y4, fast-discharge valve Y6, supercharging proportioning valve Y7, supercharging accumulator Y8, fast shot accumulator Y9, fast shot proportioning valve Y10.
Control section comprises controller Z1, encoder Z2, fast shot proportion electro-magnet Z3, supercharging proportion electro-magnet Z4.
Pour the molten metal of pressing chamber W3 into, by injection punch head X1 injection in the die cavity W2 of mould W1.Injection punch head X1 is driven by connector X2 by shot piston X3.
In the slow shot stage, oil pump Y1 is by the rodless cavity fuel feeding of 3-position 4-way direction valve Y3 to shot sleeve X4, and the work oil mass that enters shot sleeve by choke valve Y4 adjusting oil pump can make injection punch head X1 obtain different slow shot speed.The rod chamber of shot sleeve X4 is by fast-discharge valve Y6 oil return, no regulatory function.Encoder Z2 detects the shot piston X3 stroke of injection punch head X1 just by measuring moving of connector X2, and position signalling is sent into controller Z1.Check valve Y2 stops from the work oil of direction valve Y3 to the oil pump adverse current.
When the fast shot position of setting arrives, controller Z1 passing ratio electromagnet Z3, open fast shot proportioning valve Y10 with the aperture of setting, make the interior hydraulic oil of fast shot accumulator Y9 enter the rodless cavity of shot sleeve X4 with big flow, the rod chamber of shot sleeve X4 makes injection punch head X1 reach the fast shot speed of setting by the quick oil return of fast-discharge valve Y6.
When satisfying the supercharging trigger condition of setting, controller Z1 passing ratio electromagnet Z4, open supercharging proportioning valve Y7 with the aperture of setting, make the interior hydraulic oil of supercharging accumulator Y8 enter the rodless cavity of pressurized cylinder X6 with big flow, promote charged piston bar X5 by rate of pressure rise and supercharging time delay set, with the foundry goods compacting.
When injection punch head X1 returned, fast-discharge valve Y6, fast shot proportioning valve Y10, supercharging proportioning valve Y7 closed, oil pump Y1 by 3-position 4-way direction valve Y3 to the rod chamber fuel feeding of shot sleeve X4, and from the rodless cavity oil return of shot sleeve X4.Check valve Y5 stops from the work oil of shot sleeve X4 to direction valve Y3 adverse current.
The injection device of existing die casting machine mainly has the following disadvantages:
1. monitoring in real time and control are not accomplished in the variation of actual injection technological parameter in the injection process, can only be with operator's sensation and experience, quality according to the range estimation foundry goods is adjusted the injection condition, therefore has very big contingency, can't the quality of die-cast product be control effectively.
2. when the injection operating mode changes, can only before injection begins next time,, can not in injection process, control in real time system change by artificial adjustment injection condition.Therefore injection process is repeated relatively poor, causes the low and product quality of production efficiency to fluctuate bigger.
3. at an injection process slow shot speed and fast shot speed can only be set, can not dynamically carry out the multistage speed adjustment by arts demand, relatively poor to adaptability, flexibility that extrusion process requires.
The utility model content
Technical problem underlying to be solved in the utility model is: a kind of injection device that can carry out real-time closed-loop control to injection process is provided, injection process is had than prior art quicker response, higher stable state accuracy and better technological flexibility.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of die casting machine injection device, comprise that injection unit, hydraulic pressure unit, control hydraulic pressure unit provide the control module of injection power to the injection unit, the injection unit comprises the shot sleeve of being with shot piston, hydraulic pressure unit comprises the choke valve that shot sleeve rod chamber export flow quantity is controlled, and control module comprises the real-time controller that choke valve is carried out real-time closed-loop control.
The injection unit can comprise presses chamber, shot sleeve, is communicated with shot sleeve and pressurized cylinder that internal diameter is bigger than injection cylinder bore, can push the injection punch head of pressing indoor metallic solution, one end activity intercalation in shot sleeve and the other end can advance the shot piston of injection punch head, the activity intercalation can promote the charged piston of shot piston in pressurized cylinder; Hydraulic pressure unit can comprise with the shot sleeve rodless cavity between the injection accumulator that is connected by first control valve, with the supercharging accumulator that is connected by second control valve between the pressurized cylinder rodless cavity, provide the working solution feedway of working solution to shot sleeve, injection accumulator, supercharging accumulator, be provided with direction valve between shot sleeve and the working solution feedway; Control module comprises can be according to the control device of control first control valve, second control valve that impose a condition, to detecting and with the detection components of detection signal Input Control Element the position of shot piston.
The real-time controller that the utility model adopts has high response speed (can reach 0.2-1ms), thereby guarantees that control procedure becomes real-time control truly.
The real-time controller that the utility model adopted can comprehensively injection parameter measured value (shot piston position, speed, acceleration, shot sleeve rod chamber pressure, flow, shot sleeve rodless cavity pressure, throttle valve opening, pilot pressure, injection energy storage pressure etc.) and the value of setting of injection parameter outlet throttling valve opening adjustment amount is carried out Prediction Control, according to the actual change of parameter, the negative-feedback compensation is carried out in the too fast hyperharmonic vibration that causes to response speed then.
Be connected with throttle valve opening checkout gear, choke valve pilot pressure checkout gear on the speed control muffler of control shot sleeve rod chamber export flow quantity; Real-time controller receives the signal of detection components and throttle valve opening sensor and pilot pressure sensor by A/D converter, and controls the aperture of choke valve pilot stage in real time by D/A converter, thereby controls the aperture of choke valve main in real time.
Can be with the supercharging accumulator simultaneously as guide's working solution source of choke valve pilot stage, guide's accumulator is used for the road voltage stabilizing of guide's working solution.
In the utility model, in order to control in real time better, detection components can detect in real time position, speed, the acceleration of shot piston and detection signal is imported described real-time controller through position signal acquisition device or A/D converter.
Shot sleeve rod chamber pressure, rodless cavity pressure, injection energy storage pressure, pilot pressure checkout gear also can be set, and detected pressure signal is imported described real-time controller through A/D converter.
Control device can adopt logic controller to control first control valve, second control valve, also can be provided with the injection process parameter to be changed the man-machine interface carry out monitoring display, the position and the length velocity relation of described shot piston are programmed.
Operation principle of the present utility model is:
At the injection initial period, the working solution feedway provides working solution to the rodless cavity of shot sleeve.Control module is controlled first control valve and is opened with the aperture of setting, the working solution flow that the injection accumulator is entered the shot sleeve rodless cavity is controlled, the real-time injection parameter that the real-time controller synthetical collection arrives, regulate the working solution flow of shot sleeve rod chamber outlet in real time by shot sleeve rod chamber speed control muffler, thereby realize adopting the oil-in throttling to control in real time with the mode that the oil-out throttling combines to injection process, so that actual injection speed and setting value match, realize the even slow shot that quickens by the injection speed curve of setting, the multistage injection speed switches, functions such as anti-overlap deceleration.
The actual aperture of shot sleeve rod chamber speed control muffler detects by checkout gear, and signal is sent into real-time controller by A/D converter.In order better injection speed to be carried out real-time closed-loop control, real-time controller also receives signals such as the pressure signal of shot sleeve rod chamber pressure-detecting device, rodless cavity pressure-detecting device, injection energy storage pressure checkout gear, pilot pressure checkout gear and shot piston position that detection components detects in real time, speed, acceleration by A/D converter.
When the supercharging trigger condition of setting satisfies, control module is controlled second control valve and is opened with the aperture of setting, make the high-pressure work liquid in the supercharging accumulator enter the rodless cavity of pressurized cylinder, promote charged piston by rate of pressure rise and supercharging time delay set, with the foundry goods compacting with big flow.
When injection punch head returned, first control valve, second control valve, speed control muffler were closed, and the working solution feedway provides working solution to the rod chamber of shot sleeve, and the rodless cavity of shot sleeve is discharged working solution.
The beneficial effects of the utility model are:
1, when actual injection position and speed and the value of setting generation deviation, since real-time controller can comprehensively injection parameter measured value with the value of setting outlet throttling valve opening adjustment amount is carried out Prediction Control, then according to the actual change of systematic parameter, the negative-feedback compensation is carried out in the too fast hyperharmonic vibration that causes to response speed, thereby eliminated the influence of injection device hydraulic servo control system inertia, the performance of choke valve is performed to the limit, greatly improved the response speed and the stable state accuracy of system.
2, owing to the characteristic drift that has also comprised in the speed control muffler Mathematical Modeling speed control muffler, the feedback compensation module of valve port pressure oscillation and damping change makes the injection process of die casting machine keep stable under different working conditions change, does not need to adjust repeatedly.Thereby can the quality of die-cast product be control effectively, and guarantee the repeatability of injection process.
3, in the utility model, the user can import the different position of multistage, speed is adjusted injection curve, user's value of setting is the absolute value of injection speed, automatically realize by real-time closed-loop control by system, do not need to adjust repeatedly, and can in injection process, control in real time injection speed, keep the stable of injection speed.Control its slow shot process by real-time closed-loop, realize the even slow shot technology of quickening, and the slow shot process can be divided into even the acceleration and two segments at the uniform velocity, can avoid or reduce and press indoor gas to be involved in probability in the molten metal, reach the purpose of eliminating or reducing the die casting internal porosity, the even at the uniform velocity value of section of quickening slow shot is by the critical speed of pressing technological parameter decisions such as chamber diameter, molten metal filing full scale.Section also can be switched between even acceleration and multistage setting at a slow speed.Based on real-time controller and high response, big flow, high-precision speed control muffler, can carry out high-speed responsive to acceleration and deceleration injection action, fill the type latter end in high speed and also can brake, prevent that the foundry goods peak from producing, therefore have great technological flexibility by position or pressure activated.
4, in the utility model, the real-time controller of die casting machine injection device, logic controller, man-machine interface can use general high-speed CPU to carry out calculation process, and can adopt the high-speed RAM and the magnanimity ROM of vast capacity, the problem that has therefore solved high-speed closed loop control and carried out mass data high speed acquisition and storage simultaneously.
5, in the utility model, the real-time controller of die casting machine injection device, logic controller, man-machine interface can be worked under Windows operating system, therefore can use the networked problem that current techique solves die casting machine.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described.
Fig. 1 is the system architecture schematic diagram of existing a kind of die casting machine injection device;
Fig. 2 is the system architecture schematic diagram of a kind of embodiment of the utility model injection device.
The specific embodiment
Fig. 2 is the system architecture schematic diagram of a kind of embodiment of the utility model.
As shown in Figure 2, this die casting machine injection device is made up of injection part, hydraulic part, control section, to the mode that the speed control of injection process adopts the oil-in throttling to combine with the oil-out throttling, can realize the even functions such as slow shot, multistage injection, anti-overlap deceleration of quickening of closed loop control in real time.
For ease of explanation, also show the mould part of die casting machine among Fig. 2, comprise mould D01, die cavity D02, press chamber D03.
Injection partly comprises injection punch head M01, connector M02, measuring stick M03, shot piston M04, shot sleeve M05, charged piston M06, pressurized cylinder M07.
Hydraulic part comprises oil pump H01, check valve H02, H04, H09, filter H03, guide's accumulator H05, shot sleeve rod chamber speed control muffler main H06, pilot stage H07, direction valve H08, hydraulic control one-way valve H10, supercharging proportioning valve H11, supercharging accumulator H12, injection accumulator H13, injection proportioning valve H14.
Control section comprises man-machine interface C01, logic controller C02, real-time controller C03, A/D converter and position signal acquisition device C04, D/A converter C05, encoder C06, limit switch C07, shot sleeve rod chamber pressure sensor P1, rodless cavity pressure sensor P2, injection energy storage pressure sensor P3, pilot pressure sensor P4.
Pour the molten metal of pressing chamber D03 into, by injection punch head M01 injection in the die cavity D02 of mould D01.Injection punch head M01 is driven by connector M02 by shot piston M04.Measuring stick M03 and encoder C06 are used to measure the displacement of injection punch head M01, encoder C06 also can detect in real time to speed, the acceleration of shot piston, and the position signalling of injection punch head M01, the speed of shot piston, acceleration signal are sent into real-time controller C03 by A/D converter C04.Limit switch C07 is used to indicate the initial point of shot sleeve piston M04.
At the injection initial period, oil pump H01 is by the rodless cavity fuel feeding of 3-position 4-way direction valve H08 to shot sleeve M05, and check valve H02 stops from the work oil of direction valve H08 to the oil pump adverse current.Injection proportioning valve H14 opens with the aperture of setting, and the flow that injection accumulator H13 is entered the work oil of shot sleeve rodless cavity is controlled.Real-time controller C03 is by D/A converter C05, regulate the aperture of the pilot stage H07 of shot sleeve rod chamber speed control muffler, and drive main H06, control the oil drain quantity of shot sleeve rod chamber in real time in the mode of outlet throttling, the injection speed curve of setting by man-machine interface C01 by the user is realized the even functions such as slow shot, multistage injection speed switch, anti-overlap deceleration of quickening.Except that shot sleeve rod chamber speed control muffler, other fuel taps and machine action are controlled by logic controller C02.The actual aperture of shot sleeve rod chamber speed control muffler detects by position sensor C08, and signal is sent into real-time controller C03 by A/D converter C04.For injection speed being carried out real-time closed-loop control, control C03 also receives shot sleeve rod chamber pressure sensor P1, rodless cavity pressure sensor P2, injection energy storage pressure sensor P3, pilot pressure sensor P4 by A/D converter C04 pressure signal in real time.Guide's oil sources of the pilot stage H07 of shot sleeve rod chamber speed control muffler is supercharging accumulator H12, filter H03 filters guide oil, accumulator H05 is used for the voltage stabilizing of guide's oil circuit, and check valve H04 stops the work oil to supercharging accumulator H12 adverse current from the pilot stage H07 of shot sleeve rod chamber speed control muffler.
When the supercharging trigger condition of setting satisfies, logic controller C02 is by supercharging proportioning valve H11, open with the aperture of setting, make the interior hydraulic oil of supercharging accumulator H12 enter the rodless cavity of pressurized cylinder M07 with big flow, promote charged piston bar M06 by rate of pressure rise and supercharging time delay set, with the foundry goods compacting.
When injection punch head M01 returned, shot sleeve rod chamber speed control muffler, injection proportioning valve H14, supercharging proportioning valve H11 closed, oil pump H01 by 3-position 4-way direction valve H08 to the rod chamber fuel feeding of shot sleeve M05, and from the rodless cavity oil return of shot sleeve M05.Check valve H09 stops from the work oil of shot sleeve M05 to direction valve H08 adverse current.Hydraulic control one-way valve H10 makes the rodless cavity pressure release of pressurized cylinder M07.
Man-machine interface C01, logic controller C02 and real-time controller C03 can adopt same industrial computer in embodiment of the present utility model, use Windows operating system; Also can adopt independently hardware unit respectively, and use different operating system.Real-time controller C03 and A/D converter and position signal acquisition device C04 and D/A converter C05 can be split up into different hardware units, also can synthesize on same hardware unit.Logic controller C02 can be split up into different hardware units with real-time controller C03, also can synthesize on same hardware unit.
Claims (10)
1. the injection device of a die casting machine, comprise: injection unit, hydraulic pressure unit, the described hydraulic pressure unit of control provide the control module of injection power to described injection unit, described injection unit comprises the shot sleeve of being with shot piston, it is characterized in that: described injection unit comprises the choke valve that described shot sleeve rod chamber export flow quantity is controlled, and described control module comprises the real-time controller that described choke valve is carried out real-time closed-loop control.
2. injection device according to claim 1 is characterized in that: be connected with throttle valve opening checkout gear, choke valve pilot pressure checkout gear on the described choke valve; Described real-time controller receives the signal of described throttle valve opening checkout gear and pilot pressure checkout gear by A/D converter; Described real-time controller is controlled the aperture of described choke valve pilot stage in real time by D/A converter, and then controls choke valve main aperture.
3. injection device according to claim 2, it is characterized in that: described injection unit comprise press chamber, shot sleeve, be communicated with described shot sleeve and internal diameter than the big pressurized cylinder of described shot sleeve internal diameter, can push the injection punch head of the indoor metallic solution of described pressure, one end activity intercalation in described shot sleeve and the other end can advance the shot piston of described injection punch head, the activity intercalation can promote the charged piston of described shot piston in described pressurized cylinder; Described hydraulic pressure unit comprise with described pressure chamber rodless cavity between the injection accumulator that is connected by first control valve, with the supercharging accumulator that is connected by second control valve between the described pressurized cylinder rodless cavity, provide the working solution feedway of working solution to described shot sleeve, injection accumulator, supercharging accumulator, be provided with direction valve between described shot sleeve and the working solution feedway; Described control module comprises and can detect and detection signal is imported the detection components of described control module to the position of described shot piston according to the control device of impose a condition described first control valve of control, second control valve.
4. injection device according to claim 3 is characterized in that: described detection components can detect in real time speed, the acceleration of described shot piston and detection signal is imported described real-time controller by A/D converter.
5. injection device according to claim 4, it is characterized in that: described injection device also comprises shot sleeve rod chamber pressure-detecting device, shot sleeve rodless cavity pressure-detecting device, injection energy storage pressure checkout gear, and the pressure signal of these three checkout gears is imported described real-time controller by A/D converter.
6. injection device according to claim 5 is characterized in that: described real-time controller can use Windows operating system.
7. injection device according to claim 6 is characterized in that: described control module comprises can change the man-machine interface carry out monitoring display, the position and the length velocity relation of described shot piston are programmed to the injection process parameter.
8. injection device according to claim 7 is characterized in that: the pilot pressure hydraulic power source of described choke valve pilot stage is the supercharging accumulator, and the path that is communicated with described supercharging accumulator and described choke valve pilot stage is provided with guide's accumulator and filter.
9. injection device according to claim 8 is characterized in that: described first control valve and second control valve adopt proportioning valve, between described working solution feedway and the direction valve, be respectively equipped with check valve between supercharging accumulator and the guide's accumulator.
10. injection device according to claim 9, it is characterized in that: described direction valve is the 3-position 4-way direction valve, described working solution feedway provides working solution so that described shot piston rollback is provided with one-way control valve between this 3-position 4-way direction valve and the described shot sleeve rod chamber by this 3-position 4-way direction valve to described shot sleeve rod chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520066370 CN2829939Y (en) | 2005-10-24 | 2005-10-24 | Injection appts. of die cast machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520066370 CN2829939Y (en) | 2005-10-24 | 2005-10-24 | Injection appts. of die cast machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2829939Y true CN2829939Y (en) | 2006-10-25 |
Family
ID=37134863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520066370 Expired - Lifetime CN2829939Y (en) | 2005-10-24 | 2005-10-24 | Injection appts. of die cast machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2829939Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343000C (en) * | 2005-11-28 | 2007-10-17 | 深圳领威科技有限公司 | Pressure jetting unit for pressure casting machine and its control method |
| CN102615263A (en) * | 2012-03-27 | 2012-08-01 | 蚌埠市华艺压铸机制造有限责任公司 | Squeeze injection and pressure boost mechanism of die casting machine |
| CN104395016A (en) * | 2012-07-20 | 2015-03-04 | 东洋机械金属株式会社 | Molding machine |
| CN105033219A (en) * | 2015-05-26 | 2015-11-11 | 佛山联升压铸科技有限公司 | Injection pressure-boosting and speed-increasing structure of die casting machine |
| CN106438523A (en) * | 2016-08-30 | 2017-02-22 | 广东宝洋科技有限公司 | Hydraulic system and control method thereof |
| CN107243614A (en) * | 2017-05-16 | 2017-10-13 | 蚌埠隆华压铸机有限公司 | Energy-saving and high-speed injection pressure charging system |
| CN108453239A (en) * | 2018-03-12 | 2018-08-28 | 宁波海天金属成型设备有限公司 | Real-time closed-loop control cylinder press-shoot control system and method |
| CN114101621A (en) * | 2021-11-18 | 2022-03-01 | 深圳领威科技有限公司 | Pressurization closed-loop control system of die casting machine |
| CN116060594A (en) * | 2023-03-02 | 2023-05-05 | 宁波力劲科技有限公司 | Pressurizing system of injection cylinder of large die casting machine |
-
2005
- 2005-10-24 CN CN 200520066370 patent/CN2829939Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343000C (en) * | 2005-11-28 | 2007-10-17 | 深圳领威科技有限公司 | Pressure jetting unit for pressure casting machine and its control method |
| CN102615263A (en) * | 2012-03-27 | 2012-08-01 | 蚌埠市华艺压铸机制造有限责任公司 | Squeeze injection and pressure boost mechanism of die casting machine |
| CN104395016A (en) * | 2012-07-20 | 2015-03-04 | 东洋机械金属株式会社 | Molding machine |
| CN105033219A (en) * | 2015-05-26 | 2015-11-11 | 佛山联升压铸科技有限公司 | Injection pressure-boosting and speed-increasing structure of die casting machine |
| CN106438523A (en) * | 2016-08-30 | 2017-02-22 | 广东宝洋科技有限公司 | Hydraulic system and control method thereof |
| CN106438523B (en) * | 2016-08-30 | 2018-04-27 | 广东宝洋科技有限公司 | Hydraulic system and its control method |
| CN107243614A (en) * | 2017-05-16 | 2017-10-13 | 蚌埠隆华压铸机有限公司 | Energy-saving and high-speed injection pressure charging system |
| CN108453239A (en) * | 2018-03-12 | 2018-08-28 | 宁波海天金属成型设备有限公司 | Real-time closed-loop control cylinder press-shoot control system and method |
| CN108453239B (en) * | 2018-03-12 | 2024-03-15 | 宁波海天金属成型设备有限公司 | Real-time closed-loop control oil cylinder injection control system and method |
| CN114101621A (en) * | 2021-11-18 | 2022-03-01 | 深圳领威科技有限公司 | Pressurization closed-loop control system of die casting machine |
| CN114101621B (en) * | 2021-11-18 | 2023-09-05 | 深圳领威科技有限公司 | Pressurizing closed-loop control system of die casting machine |
| CN116060594A (en) * | 2023-03-02 | 2023-05-05 | 宁波力劲科技有限公司 | Pressurizing system of injection cylinder of large die casting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100343000C (en) | Pressure jetting unit for pressure casting machine and its control method | |
| CN2829939Y (en) | Injection appts. of die cast machine | |
| CN102886917B (en) | Hydraulic servo control system for efficiently improving pressing precision of powder-forming hydraulic machine | |
| CN105437396B (en) | Mixing pump control floating weight hydraulic system | |
| CN1286600C (en) | Method and drive system for control/regulation of linear pressure/cast movement | |
| CN106015139A (en) | Tension and compression testing machine hydraulic loading system adopting differential control of proportional overflow valves | |
| CN102639881B (en) | Kinematic control in a hydraulic system | |
| CN1038966A (en) | Control system for shot machine | |
| CN103114983A (en) | Pumping stroke control method of viscous material double-cylinder pump and viscous material pumping equipment | |
| CN101265926B (en) | Hydraulic wrench multifunctional pump station | |
| CN201645777U (en) | Pump-valve composite control hydraulic system for injection molding machine | |
| CN103557149B (en) | Control equipment, method and system of concrete piston and engineering machinery | |
| CN1730999A (en) | Quantitative grease filling machine for sealed low noise bearing | |
| CN212948494U (en) | Additive metering and filling device | |
| CN2514327Y (en) | Imitating loader for press | |
| CN106151123B (en) | A kind of dual-control loop Hydrauservo System component parameters optimization method | |
| CN2903010Y (en) | Full hydraulic controlling apparatus with load sensing for empty container stacking machine | |
| CN208153454U (en) | A kind of floating weight of banbury mixer cylinder hydraulic controller | |
| CN104612951B (en) | A kind of reciprocating compressor stepless tolerance regulating method and system | |
| CN2660195Y (en) | Synchronous work controller of hydraulic cylinder | |
| CN1047992A (en) | Actuating unit | |
| CN1909989A (en) | Method for adjusting the position of a mandrel of an extrusion press for producing hollow sections | |
| CN104669569B (en) | A kind of 5 machine twisting mold mechanism hydraulic systems | |
| CN202500844U (en) | Fast and low-speed control valve assembly | |
| CN2649295Y (en) | Three-time mechanical descent liftout attachment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: FUXIN L.K. NORTHERN MACHINERY CO., LTD. Assignor: Lingwei Sci-Tech Co., Ltd., Shenzhen Contract record no.: 2013990000301 Denomination of utility model: Pressure jetting unit for pressure casting machine and its control method Granted publication date: 20061025 License type: Common License Record date: 20130605 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061025 |
|
| EXPY | Termination of patent right or utility model |