CN204109304U - Pressure injection control system inside and outside a kind of electro-hydraulic servo - Google Patents
Pressure injection control system inside and outside a kind of electro-hydraulic servo Download PDFInfo
- Publication number
- CN204109304U CN204109304U CN201420595124.4U CN201420595124U CN204109304U CN 204109304 U CN204109304 U CN 204109304U CN 201420595124 U CN201420595124 U CN 201420595124U CN 204109304 U CN204109304 U CN 204109304U
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- China
- Prior art keywords
- pressure sensor
- servo
- controller
- oil pump
- pressure
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- 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
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses pressure injection control system inside and outside a kind of electro-hydraulic servo in injection molding art, comprise controller, servo-driver, motor, oil pump, hydraulic cylinder, screw rod and nozzle, controller is connected with servo-driver, servo-driver is connected with motor, motor is connected with oil pump, oil pump is connected with hydraulic cylinder, the action of Driven by Hydraulic Cylinder screw rod, nozzle place is provided with external pressure pressure sensor, external pressure pressure sensor is connected with controller, oil pump is provided with internal pressure sensor, internal pressure sensor is connected with controller, plastic pressure is carried out closed loop feedback control by arranging external pressure pressure sensor at nozzle place by the utility model, reduce the error rate of control, improve the precision of product, can be used in Shooting Technique.
Description
Technical field
The utility model relates to a kind of injection machine, particularly a kind of injection moulding control system.
Background technology
Injection machine is the maximum plastics machine kind of China's output and application quantity, and within 2008, Chinese injection machine output reaches 67680, and the demand of China's injection machine is 80000, and China accounts for 62.97% of world's injection machine annual production.China's plastics machinery has about 70% to be injection machine, and in plastic processing goods, 83% have employed injection mo(u)lding, and through the development of more than 60 years, current China can produce most of machine.The technology of injection machine most critical is control technology, is the key promoting injection machine overall technology level.Injection machine enterprise main abroad all has oneself control system for shot machine.And Chinese injection machine industry does not also have an enterprise to have the control system for shot machine of oneself so far, be all directly be arranged on the injection machine of oneself from third part purchase control system for shot machine.This strategy directly limit the technology content of Chinese injection machine.The producer of current domestic product injection machine is more, and according to incompletely statistics more than 60, owing to lacking high-end control system for shot machine, the producer that can produce high-accuracy injection machine is little.Ultraprecise injection moulding high-end product or blank, still need import.
Utility model content
The purpose of this utility model is to provide pressure injection control system inside and outside a kind of electro-hydraulic servo, and its structure is simple, and with low cost, control accuracy is high, easy for installation.
The purpose of this utility model is achieved in that pressure injection control system inside and outside a kind of electro-hydraulic servo, comprise controller, servo-driver, motor, oil pump, hydraulic cylinder, screw rod and nozzle, described controller is connected with servo-driver, servo-driver is connected with motor, motor is connected with oil pump, oil pump is connected with hydraulic cylinder, the action of Driven by Hydraulic Cylinder screw rod, described nozzle place is provided with external pressure pressure sensor, described external pressure pressure sensor is connected with controller, described oil pump is provided with internal pressure sensor, internal pressure sensor is connected with controller.
Compared with prior art, the beneficial effects of the utility model are, plastic pressure is carried out closed loop feedback control by arranging external pressure pressure sensor at nozzle place by the utility model, reduces the error rate of control, improve the precision of product; Use interior pressure, external pressure two kinds of detection mode cooperatings, existing low speed controller can be replaced easily, improve the quality of product.The utility model can be used in Shooting Technique.
In order to improve precision and the efficiency of equipment further, described external pressure pressure sensor, internal pressure sensor are connected through selector switch with between controller.
Accompanying drawing explanation
Fig. 1 is the utility model control principle drawing.
Wherein, 1 control instruction, 2 controllers, 3 servo-drivers, 4 motors, 5 oil pumps, 6 hydraulic cylinders, 7 screw rods, 8 nozzles, 9 external pressure pressure sensors, 10 internal pressure sensors.
Detailed description of the invention
Pressure injection control system inside and outside a kind of electro-hydraulic servo as shown in Figure 1, comprise controller 2, servo-driver 3, motor 4, oil pump 5, hydraulic cylinder 6, screw rod 7 and nozzle 8, described controller 2 is connected with servo-driver 3, servo-driver 3 is connected with motor 4, motor 4 is connected with oil pump 5, oil pump 5 is connected with hydraulic cylinder 6, hydraulic cylinder 6 drives screw rod 7 action, nozzle 8 place is provided with external pressure pressure sensor 9, external pressure pressure sensor 9 is connected with controller 2, oil pump 5 is provided with internal pressure sensor 10, internal pressure sensor 10 is connected with controller 2, external pressure pressure sensor 9, be connected through selector switch between internal pressure sensor 10 with controller 2.
During the work of this control system, control instruction 1 sends to controller 2, controller 2 controls servo-driver 3 successively, motor 4, oil pump 5 and hydraulic cylinder 6, the action of final drive screw rod 7 is extruded from nozzle 8, the utility model adopts backfeed loop, antijamming capability is strong, work as injection speed, injection pressure, mould-cavity temperature, cavity pressure, melt temperature and oil pressure etc. in process of production because of interference there is deviation time, injection machine carries out auto modification to interference, control accuracy is high, utilize external pressure pressure sensor 9 pairs of injection cylinders at nozzle 8 place to carry out closed loop to control in real time, the finished product of products formed can be suppressed not complete satiate with filler, realize the high-precision control of digital type high speed, the requirement that the ultra-thin high-precision densification meeting precise injection machine institute article of manufacture controls, relative at the in-built pressure sensor of mould, the advantage that mouth place arranges pressure sensor is exactly when changing injection mold in addition, does not need again the pressure sensor in more mold exchange, convenient and save cost.
The utility model is not limited to above-described embodiment; on the basis of technical scheme disclosed in the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection domain of the present utility model.
Claims (2)
1. pressure injection control system inside and outside an electro-hydraulic servo, it is characterized in that, comprise controller, servo-driver, motor, oil pump, hydraulic cylinder, screw rod and nozzle, described controller is connected with servo-driver, servo-driver is connected with motor, motor is connected with oil pump, oil pump is connected with hydraulic cylinder, the action of Driven by Hydraulic Cylinder screw rod, described nozzle place is provided with external pressure pressure sensor, described external pressure pressure sensor is connected with controller, described oil pump is provided with internal pressure sensor, and internal pressure sensor is connected with controller.
2. pressure injection control system inside and outside a kind of electro-hydraulic servo according to claim 1, is characterized in that, described external pressure pressure sensor, internal pressure sensor are connected through selector switch with between controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420595124.4U CN204109304U (en) | 2014-10-15 | 2014-10-15 | Pressure injection control system inside and outside a kind of electro-hydraulic servo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420595124.4U CN204109304U (en) | 2014-10-15 | 2014-10-15 | Pressure injection control system inside and outside a kind of electro-hydraulic servo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204109304U true CN204109304U (en) | 2015-01-21 |
Family
ID=52326660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420595124.4U Expired - Fee Related CN204109304U (en) | 2014-10-15 | 2014-10-15 | Pressure injection control system inside and outside a kind of electro-hydraulic servo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204109304U (en) |
-
2014
- 2014-10-15 CN CN201420595124.4U patent/CN204109304U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20171015 |