CN201036911Y - Energy-saving controller for injection machine - Google Patents
Energy-saving controller for injection machine Download PDFInfo
- Publication number
- CN201036911Y CN201036911Y CNU2007201087722U CN200720108772U CN201036911Y CN 201036911 Y CN201036911 Y CN 201036911Y CN U2007201087722 U CNU2007201087722 U CN U2007201087722U CN 200720108772 U CN200720108772 U CN 200720108772U CN 201036911 Y CN201036911 Y CN 201036911Y
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- valve
- proportional
- pressure
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- injection machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
一种注塑机节能控制器，包括比例压力阀、比例流量阀、与注塑机驱动电机连接的变频器以及控制板，所述控制板包括：用于在各个工艺过程控制注塑机比例压力阀的压力控制模块，以及根据比例压力阀的电量信号，转换后作为与电机连接的变频器输出频率的给定信号的变频控制模块，所述压力控制模块连接比例压力阀，所述变频控制模块连接变频器，所述的节能控制器还包括用于控制比例流量阀打开的恒流源模块，所述恒流源模块连接比例流量阀。本实用新型提供一种能够在低转速时保证流量、节电和旁路转换时不需要调节参数、操作简单的注塑机节电控制器。
An energy-saving controller for an injection molding machine, comprising a proportional pressure valve, a proportional flow valve, a frequency converter connected to the drive motor of the injection molding machine, and a control board. The control board includes: used to control the pressure of the proportional pressure valve of the injection molding machine in each process. A control module, and a frequency conversion control module that is converted into a given signal of the output frequency of the frequency converter connected to the motor according to the electric quantity signal of the proportional pressure valve, the pressure control module is connected to the proportional pressure valve, and the frequency conversion control module is connected to the frequency converter , the energy-saving controller also includes a constant current source module for controlling the opening of the proportional flow valve, and the constant current source module is connected to the proportional flow valve. The utility model provides an energy-saving controller for an injection molding machine which can ensure the flow rate at a low rotational speed, save electricity and do not need to adjust parameters during bypass conversion, and is simple to operate.
Description
(1) technical field
The utility model relates to controller of plastic injection molding.
(2) background technology
The operation principle of injection machine is to utilize the thermoplasticity of plastics, and after heating and melting, in addition high pressure makes it flow into die cavity fast, through pressurize and the cooling of a period of time, becomes the plastic products of different shape.It will pass through following several stages in the process of plastic shaping:
1) sealed mould: mould pull fast near cover half pull (comprise slow-fast-at a slow speed), and confirm that no foreign matter exists down, system transfers high pressure to, with template sealed (maintenance oil cylinder internal pressure).
2) penetrating the platform reach puts in place: penetrate platform and advance to assigned address (nozzle and mould are close to).
3) injection moulding: can set screw rod with multistage speed, pressure and stroke are with the molten material injection die cavity of barrel front end.
4) cooling and pressurize:, keep the pressure of barrel, simultaneously the die cavity cooling forming by setting multiple pressure and time period.
5) cooling and preformed: goods continue cooling in the die cavity, and fluid-power motor drive screw rotation simultaneously will push away before the plastic pellet, and screw rod retreats under the back pressure control of setting, when screw rod retreats into the precalculated position, screw rod stops the rotation, and injection cylinder moves back by setting pine, expects to finish.
6) penetrating platform retreats: preformed is penetrated platform and is retreated into assigned address after finishing.
7) die sinking: mould pull retreat into original position (comprise slow-fast-at a slow speed)
8) eject: thimble ejects goods.
From above several stages as can be seen, injection machine is different at each stage needed pressure of working.Not implementing before the variable frequency energy saving reforming, is that computer plate by injection machine sends different electric currents and controls the proportional pressure valve of injection machine and obtain different pressure with proportional flow control valve.
Existing injection machine energy-saving transformation, the general electric quantity signal that normally will be used for controlling to adjust proportional flow control valve and proportional pressure valve, carry out after the conversion process given signal as the frequency converter output frequency, or technical process control signals such as the locked mode of injection machine, injection, melten gel, cooling, die sinking are handled multistage speed or the program control signal (also be the given signal of frequency converter output frequency) of back as frequency converter, satisfy of the requirement of the various technologies of injection machine with this regulative mode, and reach purpose of energy saving charge oil pressure and flow.
From the injection machine transformation of routine as can be seen, according to the difference that Shooting Technique requires, pressure and flow that each stage needs also are different.The control signal of regulating proportioning valve and flow valve is both as the given signal of frequency converter, again as the above two conditioning signal, like this at low discharge, the link control signal electric current of low-pressure is little, and the frequency that drives frequency converter is low, and motor speed is slack-off, the aperture of adding flow valve is little, so it is little to flow through the oil mass of flow valve, the injection moulding action is slack-off, thus the production life cycle lengthening.
When the state conversion of economize on electricity and bypass, need readjust parameter, make troubles, impact to production to producers.Owing to slow-footed reason is often arranged after the traditional frequency conversion transformation, the injection molding technology personnel must increase the setting value of pressure or flow like this, allow the flow valve aperture open, it is faster that motor speed also becomes, increase the requirement that system pressure satisfies Shooting Technique, when turning back to the bypass operation owing to the energy-saving device fault, if not the parameter of bypass can cause serious damage to equipment before getting back to again.
(3) summary of the invention
Flow is little when overcoming the slow-speed of revolution of existing injection machine energy-saving controller, injection moulding speed slow, the deficiency of economize on electricity and bypass conversion trouble, and the utility model provides a kind of can guarantee when the slow-speed of revolution that flow, economize on electricity and bypass do not need to regulate parameter, injection machine electricity-saving controller simple to operate when changing.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of injection machine energy-saving controller, comprise proportional pressure valve, proportional flow control valve, the frequency converter and the control panel that are connected with the injection machine drive motors, described control panel comprises: be used for the pressure control module at each technical process control injection machine proportional pressure valve, and according to the electric quantity signal of proportional pressure valve, the conversion back is as the VFC module of the given signal of the frequency converter output frequency that is connected with motor, described pressure control module connects proportional pressure valve, described VFC module connects frequency converter, it is characterized in that: described energy-saving controller comprises also and is used for the constant-current source module that the control ratio flow valve is opened that described constant-current source module connects proportional flow control valve.
Further, described proportional pressure valve, proportional flow control valve are magnetic valve, and the electric current of described constant-current source module is identical with the maximum current of proportional flow control valve.
Technical conceive of the present utility model is: according to the difference of Shooting Technique requirement, pressure and flow that each stage needs also are different, so at low-pressure, in the time of low discharge, installed the constant-current source module additional, allow proportional flow control valve all open,, also can allow oil moment straightwayly flow through the requirement that flow valve satisfies injection moulding even the rotating speed of Oil pump electrical machinery is very low.
The beneficial effects of the utility model mainly show: do not need to regulate parameter, simple to operate when guaranteeing flow, economize on electricity and bypass conversion when the slow-speed of revolution.
(4) description of drawings
Fig. 1 is the theory diagram of energy-saving controller.
Fig. 2 is the circuit diagram of constant-current source module.
(5) specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1, Fig. 2, a kind of injection machine energy-saving controller, comprise proportional pressure valve 1, proportional flow control valve 2, frequency converter 3 that is connected with the injection machine drive motors and control panel 4, described control panel 4 comprises: be used for the pressure control module 5 at each technical process control injection machine proportional pressure valve, and according to the electric quantity signal of proportional pressure valve, the conversion back is as the VFC module 6 of the given signal of the frequency converter output frequency that is connected with motor, described pressure control module 5 connects proportional pressure valve 1, described VFC module 6 connects frequency converter 3, described energy-saving controller comprises also and is used for the constant-current source module 7 that the control ratio flow valve is opened that described constant-current source module 7 connects proportional flow control valves 2.
Described proportional pressure valve 1, proportional flow control valve 2 are magnetic valve, and the electric current of described constant-current source module 7 equates with the maximum current of proportional flow control valve 2.
With reference to Fig. 2, the constant-current source module adopts the filtering of class bridge type: be made up of two ceramic dielectric capacitor C 4, C5 and diode D4.36V exchanges or direct current inserts rectifier bridge D3, by capacitor filtering C2, C3, U3 (B834), D14, D13, D12, D11, R10, R9, R8 constant current are through protective tube F1 after U2 (LM3 17), C1, R2, D1, D2, the R3 pressure regulation, and cut-in relay K6 and another category bridge type filtering C6, C7, D6 control switching.Control transfer relay K6 is Zener diode D8, R5 resistance and U2 (LM317) power supply.5 logic relays wherein K5 are switch control, remaining 4 two a pair of compositions or door (K1 and K2, K3 and K4).Logic relay is U1 (78L12) power supply.
In the present embodiment, difference according to the Shooting Technique requirement, pressure and flow that each stage needs also are different, so at low-pressure, in the time of low discharge, installed the present embodiment controller additional, allowed proportional flow control valve 2 all open, even the rotating speed of Oil pump electrical machinery is very low, also can allow oil moment straightwayly flow through the requirement that flow valve satisfies injection moulding.
When bypass condition and electricity-saving state conversion, need not the staff and adjust the requirement that parameter also can satisfy Shooting Technique again.Because before the injection machine frequency conversion is transformed, motor speed is can not change with the pressure size, it is constant rotating speed, oil pump is also turning round always, constantly produces pressure, so when electromagnetic valve one action, just there is oil to flow through, no matter be to need how little pressure and flow it also can satisfy, after frequency conversion was transformed, motor was with pressure and flow is big or small changes, work as pressure, the big more motor speed of flow is fast more, and is more little slow more, but Oil pump electrical machinery also can make oil produce pressure at a slow speed, when force value and flow value more little, the aperture of valve is also more little, and oil is obstructed when flowing through valve, causes whole system pressure not enough, cause the product rejection rate height, the staff just must raise the parameter of injection machine, when forwarding bypass condition in order to overcome above reason, the staff must recall to parameter again, not so the pressure of certain link and flow are excessive, not only can make product defective, but also cause damage to equipment; When adding the injection machine energy-saving controller of loading onto present embodiment, even when control signal is little, the constant-current source module is sent the electric current that allows flow valve all open and is all opened by flow valve.Allow oil cross valve and be not obstructed at transient flow.Such as, when product of injection moulding is 35 at the pressure of die sinking one end, flow is 25, before not transforming, can normal die sinking, after the reducing energy consumption of routine, it is 20HZ that the control signal of sending can only drive frequency conversion, and the flow of oil reduces relatively when Oil pump electrical machinery is the 20HZ running, and at this moment the aperture of flow valve is also very little, be prevented from when flowing through valve, do not open mould, at this time can only strengthen flow value, become 35 or 40 and just can open mould.If at this time valve can standard-sized sheet, allow oil moment all pass through, also can allow mould open, just can realize this function after having increased the constant-current source module, need not regulate parameter.So in economize on electricity, the bypass conversion operations is simple and convenient.
Claims (2)
1. injection machine energy-saving controller, comprise proportional pressure valve, proportional flow control valve, the frequency converter and the control panel that are connected with the injection machine drive motors, described control panel comprises: be used for the pressure control module at each technical process control injection machine proportional pressure valve, and according to the electric quantity signal of proportional pressure valve, the conversion back is as the VFC module of the given signal of the frequency converter output frequency that is connected with motor, described pressure control module connects proportional pressure valve, described VFC module connects frequency converter, it is characterized in that: described energy-saving controller comprises also and is used for the constant-current source module that the control ratio flow valve is opened that described constant-current source module connects proportional flow control valve.
2. injection machine energy-saving controller as claimed in claim 1 is characterized in that: described proportional pressure valve, proportional flow control valve are magnetic valve, and the electric current of described constant-current source module equates with the maximum current of proportional flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201087722U CN201036911Y (en) | 2007-04-29 | 2007-04-29 | Energy-saving controller for injection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201087722U CN201036911Y (en) | 2007-04-29 | 2007-04-29 | Energy-saving controller for injection machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201036911Y true CN201036911Y (en) | 2008-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201087722U Expired - Fee Related CN201036911Y (en) | 2007-04-29 | 2007-04-29 | Energy-saving controller for injection machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201036911Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187871A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Power supply control device of magnetic valve flow in anaesthesia machine and method thereof |
| CN106079333A (en) * | 2016-06-12 | 2016-11-09 | 广州市香港科大霍英东研究院 | The injection moulding machine mould open parameter Automatic adjustment method optimized based on model-free |
-
2007
- 2007-04-29 CN CNU2007201087722U patent/CN201036911Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187871A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Power supply control device of magnetic valve flow in anaesthesia machine and method thereof |
| CN103187871B (en) * | 2011-12-30 | 2016-04-20 | 北京谊安医疗系统股份有限公司 | The power control of electromagnetically operated valve flow and method in a kind of Anesthesia machine |
| CN106079333A (en) * | 2016-06-12 | 2016-11-09 | 广州市香港科大霍英东研究院 | The injection moulding machine mould open parameter Automatic adjustment method optimized based on model-free |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20120429 |