CN2871169Y - Controller of plastic jetting former - Google Patents
Controller of plastic jetting former Download PDFInfo
- Publication number
- CN2871169Y CN2871169Y CN 200520058839 CN200520058839U CN2871169Y CN 2871169 Y CN2871169 Y CN 2871169Y CN 200520058839 CN200520058839 CN 200520058839 CN 200520058839 U CN200520058839 U CN 200520058839U CN 2871169 Y CN2871169 Y CN 2871169Y
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- China
- Prior art keywords
- servo
- servomotor
- variable pump
- driver
- control
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- Expired - Lifetime
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Abstract
The utility model discloses a controller of plastic jetting former, including a hydraulic driven unit and an electrical control unit. A DC servo electrical motor with high response and a scale variable delivery pump with sensitive loading driven by the hydraulic driven unit are provided with the hydraulic driven unit, realizing a closed loop controlling. The DC servo electrical motor is provided with a servo driver to adjust the speed of DC servo electrical motor. A pressure sensor is arranged between the scale variable delivery pump and the servo driver. The pressure signal from the scale variable delivery pump would be fed back to the servo driver by the pressure sensor, forming a closed loop control of the system pressure and on-line testing. The utility model has a plurality of advantages, such as: simple and reasonable structure, low cost, small size, compact structure, easy debugging, high controlling accuracy, low power consumption, high dynamical response, obvious energy saving, high repetition and environment protection.
Description
Technical field
The utility model relates to the control device of a kind of injection machine, particularly a kind of plastic-injection moulding machine.
Background technology
The common all size and the injection machine of structure, hydraulic mechanism adopt quantitative oil pump and ratio flow pressure valve as the power components and parts, and injection and holding pressure control adopt common electromagnetic direction valve, and the plasticizing back pressure adopts overflow valve.The injection machine of these structures adopts open loop control mode, during device work, provides and set value the control signal of corresponding to pressure, flow by controller, and ratio flow pressure valve is by this corresponding pressure of signal controlling mechanism and flow.The control procedure of open loop can be subjected to the influence of various changing factors such as oil temperature, greasy dirt and the fluctuation of load, and its throttling and spill losses are all big, energy consumption is also higher, response speed is slow, and control accuracy is low.Its control accuracy and repeatable accuracy can only satisfy the control requirement of conventional products.
In order to improve response speed, the load-sensing formula rate variable pump machanism that has adopted high response on some injection machines is also arranged, though this kind injection machine has than much progress than traditional injection moulding machine on energy-conservation, but the response speed of mechanism is still very slow, control modes such as its flow, pressure, speed, position still are open loop control, the control accuracy of mechanism and repeatable accuracy are not high, can not be suitable for high speed, High-efficient Production or precise injection molding requirement.
External also have some injection machines to adopt all-electric servo-drive, it has adopted a plurality of AC servomotors to drive simultaneously, and has used high-precision sensor, has guaranteed the low energy consumption and the high accuracy of this device, be applicable to the manufacturing of high-accuracy property product, have excellent performance.But because cost is higher and the core technology restriction, homemade molding machine is used less.
The utility model content
The purpose of this utility model is to provide that a kind of simple and reasonable, low cost of manufacture, volume are little, compact conformation, debugging is easy, control accuracy is high, energy consumption is low, and to flow, pressure and the rotating speed plastic-injection moulding machine control device that carries out closed-loop control of device, to overcome weak point of the prior art.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of control device of plastic-injection moulding machine, the hydraulic drive mechanism and the electrical control mechanism that comprise injection machine, it is characterized in that hydraulic drive mechanism is provided with the load-sensitive type proportional variable pump of high response AC servomotor and driving thereof, to realize closed-loop control.
Be provided with shaft coupling between high response AC servomotor and the proportional variable pump, shaft coupling is provided with oil pump bracket outward, in order to closed coupling and proportional variable pump.AC servomotor has been equipped with servo-driver, and when mechanism worked, power output was adjusted automatically with changes in process parameters, in order to regulate the rotating speed of AC servomotor.
Be provided with pressure sensor between proportional variable pump and the servo-driver, the pressure signal of proportional variable pump can feed back to servo-driver by pressure sensor, to realize the closed-loop control and the online detection of system pressure.
Be provided with internal encoder in the AC servomotor, internal encoder is given servo-driver with the motor speed signal feedback, to realize the closed-loop control and the online detection of motor speed.
Electrical control mechanism is provided with the PC controller, in order to send and to handle various system operational parameters.
The utility model hydraulic mechanism has adopted high response AC servomotor to drive the high-efficient energy-saving power mechanism of load-sensitive type proportional variable pump, the use of proportional variable pump, realized that hydraulic injection molding machine mechanism changed into the transformation of pump control by the valve control, make conventional throttle grverning mechanism change volumetric speed control mechanism into, the control performance index of complete machine has had new improving.In mechanism when work,, the rotating speed of the different adjustment AC servomotor by power output, thereby control and resize ratio variable pump delivery parameter (swashplate angle) come the flow output of guiding mechanism and carry out pressure and control, and can realize closed-loop control.The adjustable motor rotating speed is zero when the device cooling, proportional variable pump is output flow no longer, be in complete halted state, can not produce unloaded energy loss, consumed power of whole machine lowers greatly, compares with conventional machine, and 40%-65% can economize on electricity, energy-saving effect is obvious, than the injection machine power saving effect of present oil pressure actuated bigger improvement is arranged.
The utility model dynamic response is fast.Servomotor has high response speed, but the height of implement device response control is fit to efficient and precise injection molding.
The utility model good reproducibility.AC servomechanism cooperates various sensors, can realize the closed-loop control of machine speed and pressure.
The utility model compliance with environmental protection requirements is saved hydraulic oil and cooling water.The device heating significantly reduces, and can save hydraulic oil and cooling water more than 30%.
Electrical control mechanism output is used to control the analog control signal of different range of the load-sensing formula proportional variable pump of high response.
The utility model is simple and reasonable, low cost of manufacture, volume are little, compact conformation, but debugging is easy, control accuracy is high, the low high speed injection of energy consumption.
Description of drawings
Fig. 1 is that AC servo drives variable pump mechanism structure schematic diagram in the utility model.
Fig. 2 is the utility model control principle block diagram.
The specific embodiment
Referring to Fig. 1, AC servo drives variable pump mechanism and mainly comprises high response AC servomotor 1 and load-sensitive type proportional variable pump 4.AC servomotor 1 drives proportional variable pumps 4 work by shaft coupling 3, the shaft coupling 3 outer oil pump brackets 4 that are provided with, and in order to closed coupling 3 and proportional variable pump 4, when each parameter change of servomotor 1 output, mechanism pressure or flow also change thereupon.5 is servo-driver among the figure, and 6 is the PC controller.
Referring to Fig. 2, electrical control mechanism is provided with the PC controller, in order to send and to handle various default operational factors.At first, pass to proportional variable pump by the pressure and the speed of each action of technological requirement set mechanism of injection mo(u)lding, these setting values can be transformed into corresponding analog signal (current signal or voltage signal) and flow to servo-driver simultaneously.Servo-driver flows to AC servomotor with this setting signal, and this motor sets value to mechanism's outputting power by these, and realizes the work of mechanism by driving proportional variable pump.Proportional variable pump is according to receiving the dynamically working that motor is carried, and the power of received pressure signal P S and flow signal VS and motor input made comparison, the discharge capacity parameter (swashplate angle) of control and adjustment itself, provide driving needed pressure of load and flow to device, realize the online detection and the closed-loop control of pressure and flow signal.Simultaneously, the pressure signal of proportional variable pump feeds back to servo-driver by pressure sensor, has realized the closed-loop control and the online detection of device pressure.
The AC servo drive motor relies on internal encoder to give servo-driver with the motor speed signal feedback in outputting power, has realized the closed-loop control and the online detection of motor speed.
Claims (5)
1. the control device of a plastic-injection moulding machine, the hydraulic drive mechanism and the electrical control mechanism that comprise injection machine, it is characterized in that the load-sensitive type proportional variable pump (4) that hydraulic drive mechanism is provided with high response AC servomotor (1) and drives, to realize closed-loop control; Be provided with shaft coupling (3) between high response AC servomotor and the proportional variable pump, shaft coupling is provided with oil pump bracket (2) outward, in order to closed coupling and proportional variable pump.
2. the control device of plastic-injection moulding machine according to claim 1 is characterized in that AC servomotor is equipped with servo-driver (5), in order to regulate the rotating speed of AC servomotor.
3. the control device of plastic-injection moulding machine according to claim 1, it is characterized in that being provided with pressure sensor between proportional variable pump and the servo-driver, the pressure signal of proportional variable pump can feed back to servo-driver by pressure sensor, to realize the closed-loop control and the online detection of system pressure.
4. the control device of plastic-injection moulding machine according to claim 1, it is characterized in that being provided with in the AC servomotor internal encoder, internal encoder is given servo-driver with the motor speed signal feedback, to realize the closed-loop control and the online detection of motor speed.
5. the control device of plastic-injection moulding machine according to claim 1 is characterized in that electrical control mechanism is provided with PC controller (6), in order to send and to handle various default operational factors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520058839 CN2871169Y (en) | 2005-05-31 | 2005-05-31 | Controller of plastic jetting former |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520058839 CN2871169Y (en) | 2005-05-31 | 2005-05-31 | Controller of plastic jetting former |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2871169Y true CN2871169Y (en) | 2007-02-21 |
Family
ID=37739518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520058839 Expired - Lifetime CN2871169Y (en) | 2005-05-31 | 2005-05-31 | Controller of plastic jetting former |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2871169Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632599A (en) * | 2012-03-27 | 2012-08-15 | 宁波恩瑞德机电科技有限公司 | Control system of injection molding machine |
| CN108843658A (en) * | 2018-09-12 | 2018-11-20 | 北京亿美博科技有限公司 | A kind of digital hydraulic control system of rotating mechanism, rotary system and mechanical equipment |
| CN111842526A (en) * | 2020-06-10 | 2020-10-30 | 佛山市恒力泰机械有限公司 | Speed control method, system and control device for aluminum profile extruder |
-
2005
- 2005-05-31 CN CN 200520058839 patent/CN2871169Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632599A (en) * | 2012-03-27 | 2012-08-15 | 宁波恩瑞德机电科技有限公司 | Control system of injection molding machine |
| CN108843658A (en) * | 2018-09-12 | 2018-11-20 | 北京亿美博科技有限公司 | A kind of digital hydraulic control system of rotating mechanism, rotary system and mechanical equipment |
| CN111842526A (en) * | 2020-06-10 | 2020-10-30 | 佛山市恒力泰机械有限公司 | Speed control method, system and control device for aluminum profile extruder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG YIZUMI PRECISION MACHINERY CO., LTD. Free format text: FORMER NAME: YIZHIMI PRECISION MACHINERY CO., LTD., FOSHAN |
|
| CP03 | Change of name, title or address |
Address after: 528300 Guangdong province Foshan city Shunde high tech Zone (Ronggui) No. 22 Keyuan Road three Patentee after: Guangdong Yizumi Precision Machinery Co., Ltd. Address before: 528300 Guangdong province Foshan city Shunde District Ronggui Street four No. 47 West Jiaolu Patentee before: Yizhimi Precision Machinery Co., Ltd., Foshan |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150531 Granted publication date: 20070221 |