CN2560486Y - Injection moulding machine energy saver - Google Patents
Injection moulding machine energy saver Download PDFInfo
- Publication number
- CN2560486Y CN2560486Y CN02251633U CN02251633U CN2560486Y CN 2560486 Y CN2560486 Y CN 2560486Y CN 02251633 U CN02251633 U CN 02251633U CN 02251633 U CN02251633 U CN 02251633U CN 2560486 Y CN2560486 Y CN 2560486Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- energy
- resistance
- control
- signal
- 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 - Fee Related
Links
Images
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
- B29C45/7666—Measuring, controlling or regulating of power or energy, e.g. integral function of force
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
An injection moulding machine energy saver belongs to an energy saving equipment for controlling the rotating speed of an electric motor. The flux and pressure signal of a hydraulic pressure major loop is controlled by the machine through sampling, and then is converted to a voltage signal of 0 to 10V after being processed to control the output frequency f of a transducer, thus controlling the rotating speed of the electric motor to reach the goal of energy saving.
Description
One. technical field:
The application relates to a kind of injection machine energy-saving equipment, relates in particular to a kind of energy-saving equipment of the injection machine by the motor-driven constant displacement pump.
Two. background technology:
The existing injection machine great majority of China are to adopt the motor-driven constant displacement pump, and constant displacement pump is got the hydraulic oil of constant flow rate.And the required oil mass of injection machine production process is constantly to change, and the hydraulic oil of getting has only wherein a part of hydraulic oil to provide oil cylinder each action, and the hydraulic oil that accounts for 83%-36% flows back to fuel tank by overflow valve, causes the significant wastage of the energy.
In order to reduce the flow that hydraulic oil overflows back fuel tank, reach the purpose of energy savings, now existing equipment have adopted various ways and means.The flow that for example adopts variable pump to regulate output hydraulic oil reaches purpose of energy saving.But this method efficient is lower, also can produce bigger noise.
Three. summary of the invention:
Find that in the long-term production practice flow that the injection machine working connection is required and pressure are by pressure proportioning valve and flow proportion valve control.Motor drives constant displacement pump with constant rotational speed, the hydraulic oil of constant displacement pump output constant flow rate, and wherein a part of hydraulic oil flows into each cylinder action of working connection system drive by pressure proportioning valve and flow proportion valve control; And other a part of hydraulic oil flows back to fuel tank by overflow valve.If can remove to regulate motor speed according to the control signal of pressure proportioning valve and flow proportion valve, reduce spillway discharge, just can reach purpose of energy saving.
The objective of the invention is to, reduce energy waste as much as possible,, production cost is reduced producing the higher efficient of acquisition under few noise situations.
The present invention is achieved through the following technical solutions:
This device is a kind of injection machine energy-saving device, is that to drive constant displacement pump with motor with stepless speed regulation be controlled plant, and it is characterized in that: described energy-saving appliance comprises signal sampling and treatment circuit, RHVC, operation and display part and external cabling terminal; Described external cabling terminal comprises: be used for three-phase power input end that links to each other with an outside three phase mains R, S, T, three-phase power output end that is used for output motor control power supply U, V, W and is connected with described motor with stepless speed regulation, flow signal terminal and pressure signal terminal; Described signal sampling and treatment circuit comprise: pressure signal sampling and treatment circuit and flow signal sampling and treatment circuit, two parts circuit is symmetrical, and all be the signal sample circuit that constitutes by the resistance that is connected in parallel on the signal terminal, resistance and the electric capacity filter circuit that constitutes in parallel, the amplifying circuit that multi-stage operational amplifier and a plurality of resistance constitute, operational amplifier, two diodes and the common follow circuit that constitutes of resistance are connected in series successively and form, and above-mentioned two parts circuit is superimposed at the output of its follow circuit separately; The output of the follow circuit of described stack is connected with the simulation control end of described converter plant, thereby the control converter plant outputs to the frequency of the Electric Machine Control power supply of three-phase power output end.
This energy-conserving device has following advantage: power savings is remarkable, but saves energy reaches 28%-50%; Characteristics such as have speed-regulating range width, the speed governing flatness is good, and speed stability is good; Convenient to existing injection machine transformation, need not change original injection machine system.
Four. description of drawings:
Accompanying drawing 1 is the control panel figure according to injection machine energy-saving device of the present invention;
Accompanying drawing 2 is the outside terminal wiring diagram according to injection machine energy-saving device of the present invention;
Five. the specific embodiment:
The application's injection machine energy-saving device comprises signal sampling and treatment circuit, and RHVC also comprises major parts such as control panel and external cabling terminal in addition.
Described control panel is positioned on the casing of energy-saving appliance, be energy-saving appliance operation and display part, as shown in Figure 1, described control panel comprises the run signal lamp of the duty that is used to show this device, be used to start and stop the button of described energy-saving appliance, with the energy-conservation and change-over switch power frequency mode, described power save mode refers to that energy-saving appliance comes into operation, and injection machine is in the energy-saving run state.Described power frequency mode is that energy-saving appliance is not devoted oneself to work, and injection machine is in not energy-saving run state.When the energy-saving appliance fault, the user need only switch to switch the power frequency mode and get final product ordinary production.
Accompanying drawing 2 is wiring diagrams of described outside terminal, and the application's injection machine energy-saving utensil has three-phase power input end, is used for linking to each other with an outside three phase mains R, S, T; With three-phase power output end, be used for output motor control power supply U, V, W, and by the cable (not shown) that is connected with the injection machine oil pump motor; The flow signal terminal is used for accepting to control from injection machine the analog signals corresponding to the certain flow value of hydraulic pressure working connection flow proportion valve; The pressure signal terminal is used for accepting to control from injection machine the analog signals corresponding to the certain pressure value of hydraulic pressure working connection pressure proportioning valve.Each moves needed flow and pressure because the sampled signal of this energy-saving appliance, therefore can accurately reflect injection machine from flow and pressure proportioning valve in the control working connection.
Because the sampled signal in flow or the introducing of pressure signal terminal is fainter, also includes interfering signal, therefore can not be directly as control signal.For the energy-saving appliance that addresses this problem the application is provided with signal sampling and treatment circuit, is used for that coupling is amplified in sampled signal filtering and handles, so that finally convert the control signal of 0-10V to.Shown in the accompanying drawing 3 is the described signal sampling and the treatment circuit part of energy-saving appliance, and it comprises pressure signal sampling and treatment circuit, and flow signal sampling and treatment circuit, and two parts circuit is symmetrical.Be example now with traffic sampling and treatment circuit, the structure and the annexation of foregoing circuit are described, described flow signal sampling and treatment circuit comprise the signal sample circuit of being made up of resistance R 1, described resistance R 1 two ends link to each other with two flow signal terminals respectively, resistance R 2 and capacitor C 1 parallel connection, resistance R 3 and capacitor C 2 parallel connections, with in parallel with resistance again after resistance R 2 and the R3 series connection, resistance R 2, R3 and capacitor C 1, C2 forms filter circuit, one of resistance R 1 terminates to "+" input of operational amplifier OP1, and the other end of resistance R 1 is received "+" input of another operational amplifier OP2."-" input of operational amplifier OP1 links to each other with "-" input of operational amplifier OP2 by an adjustable resistance R5, cross-over connection one resistance R 4 between the output of operational amplifier OP1 and "-" input, the output of operational amplifier OP1 is received "-" input of operational amplifier OP3 by resistance R 7, the output of operational amplifier OP2 is received "+" input of operational amplifier OP3 by resistance R 8, cross-over connection one resistance R 6 between the output of operational amplifier OP2 and "-" input, "+" input of operational amplifier OP3 links to each other with earth point GND by resistance R 9 in addition, cross-over connection one resistance R 10 between the output of operational amplifier OP3 and "-" input, the output of operational amplifier OP4 is received "+" input of operational amplifier OP4 by resistance R 11, the output of operational amplifier OP4 links to each other by the negative terminal with diode D1, "-" input of operational amplifier OP4 links to each other with the negative terminal of diode D2, the anode of diode D2 links to each other with the negative terminal of diode D1, cross-over connection one resistance R 12 between "-" input of operational amplifier OP4 and the anode of diode D1, the anode of diode D1 is connected to " control signal " shown in Figure 3 and locates.Above-mentioned operational amplifier OP1, OP2, OP3, resistance R 4, R5, R6, R7, R8, the common amplifying circuit of forming of R9, R10, and can adjust circuit gain output by the value that changes adjustable resistance R5, to adjust the scope of the output signal that " control signal " locate on the whole.Above-mentioned operational amplifier OP4, resistance R 11, R12 and diode D1, D2 constitute follow circuit jointly.Above-mentioned sample circuit, amplifying circuit, follow circuit are serially connected successively, and be finally superimposed at control signal end points place.
Indicate in signal sample circuit shown in the accompanying drawing 3 and the signal processing circuit that " control signal " end is connected with the simulation control end of described RHVC (not shown), thereby the frequency of the Electric Machine Control power supply that the control converter plant is exported, described RHVC can be known any form in the affiliated technical field, therefore needn't describe in detail.The frequency that converter plant is exported is configured to 10-50HZ according to production status, usually between 15-40HZ, crosses low and anomaly such as motor shutdown occurs to prevent the frequency converter output frequency, guarantees that motor runs well.Can be by regulating adjustable resistance (R5, R17) change output frequency in the accompanying drawing 3.
Described energy-saving appliance is realized its power saving function in this wise by above-mentioned each part: from the signal of the injection machine flow of signal terminal, pressure through signal sample circuit, again through being connected with RHVC simulation control end after filtering, amplification, the stack, thereby the corresponding frequencies control motor speed by the output of control RHVC reaches good energy-saving effect by in good time adjustment motor speed.
Below be the energy-saving effect correction data before and after the energy-saving appliance input after tested:
| The ammeter reading | Working time (hour) | Total power consumption (degree) | Average current drain (degree) | Remarks | |||
| Beginning | Line ends | ||||||
| System health | Energy-conservation | 59 | 79 | ?35.2 | ?200 | ?5.68 | Transformer 50/5 |
| Power frequency | 134. 5 | 165. 3 | ?32 | ?308 | ?9.63 | ||
| Power saving rate calculates | (9.63-5.68)/9.63*100％＝41％ | ||||||
| Power savings is analyzed | Respond well, board production is normal. | ||||||
This energy-saving appliance is applicable to the mode of the motor-driven constant displacement pump of injection machine, comprises the single pump of single motor-driven, or single motor-driven double pump or many pumps; Comprise the many pumps of Dual-motors Driving, or the many pumps of many motor-driven.
Claims (2)
1. injection machine energy-saving device is that to drive constant displacement pump with motor with stepless speed regulation be controlled plant, and it is characterized in that: described energy-saving appliance comprises signal sampling and treatment circuit, RHVC, operation and display part and external cabling terminal;
Described external cabling terminal comprises: be used for three-phase power input end that links to each other with an outside three phase mains R, S, T, three-phase power output end that is used for output motor control power supply U, V, W and is connected with described motor with stepless speed regulation, flow signal terminal and pressure signal terminal;
Described signal sampling and treatment circuit comprise: pressure signal sampling and treatment circuit and flow signal sampling and treatment circuit, and two parts circuit is symmetrical, and all is by the resistance (R1 that is connected in parallel on the signal terminal; R13) signal sample circuit of Gou Chenging, resistance (R2, R3; R14, R15) and electric capacity (C1, C2; C3, the C4) filter circuit that constitutes in parallel, multi-stage operational amplifier (OP1-3; OP5-7) and a plurality of resistance (R4-R11; R16-23) amplifying circuit of Gou Chenging, an operational amplifier (OP4; OP8), two diode (D1-2; D3-4) and resistance (R12; R24) the common follow circuit that constitutes is connected in series successively and forms, and above-mentioned two parts circuit is superimposed at the output of its follow circuit separately;
The output of the follow circuit of described stack is connected with the simulation control end of described converter plant, thereby the control converter plant outputs to the frequency of the Electric Machine Control power supply of three-phase power output end.The output of the follow circuit of described stack is connected with the simulation control end of described converter plant, thereby the control converter plant outputs to the frequency of the Electric Machine Control power supply of three-phase power output end.
2. injection machine energy-saving device as claimed in claim 1, it is characterized in that, described operation and display part are control panel, this control panel comprises the run signal lamp of the duty that is used to show described energy-saving appliance, be used to start and stop the button and the energy-conservation and change-over switch power frequency mode of described energy-saving appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02251633U CN2560486Y (en) | 2001-12-07 | 2002-08-10 | Injection moulding machine energy saver |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01276301 | 2001-12-07 | ||
| CN012763012 | 2001-12-07 | ||
| CN02251633U CN2560486Y (en) | 2001-12-07 | 2002-08-10 | Injection moulding machine energy saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2560486Y true CN2560486Y (en) | 2003-07-16 |
Family
ID=34064856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02251633U Expired - Fee Related CN2560486Y (en) | 2001-12-07 | 2002-08-10 | Injection moulding machine energy saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2560486Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2543492A3 (en) * | 2006-07-06 | 2017-04-05 | KraussMaffei Technologies GmbH | Apparatus and method for user-specific monitoring and control of production |
-
2002
- 2002-08-10 CN CN02251633U patent/CN2560486Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2543492A3 (en) * | 2006-07-06 | 2017-04-05 | KraussMaffei Technologies GmbH | Apparatus and method for user-specific monitoring and control of production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100395955C (en) | DC fan starting circuit | |
| CN101814878B (en) | DC brushless motor controller integrating various input signal interface circuits and control method thereof | |
| CN1578086A (en) | Switching regulator control circuit | |
| CN103629095A (en) | Small-sized diaphragm pump simulation frequency changing system and control method thereof | |
| CN111610813B (en) | Constant-current driving circuit of electromagnetic valve for automobile | |
| CN102946191A (en) | Digital boost switching mode power supply device based on DSP (digital signal processor) | |
| CN2560486Y (en) | Injection moulding machine energy saver | |
| CN107231096A (en) | The multistage loop control circuit of primary side feedback Switching Power Supply | |
| CN202732303U (en) | Simulation frequency conversion system of small-size membrane pump | |
| CN110994985B (en) | Fast response filtering backstepping control method of switching power supply Buck converter | |
| CN106787673A (en) | A kind of convertible frequency air-conditioner PFC control methods | |
| CN2854893Y (en) | Capacitor switching monitoring device based on single-chip processor and configuration | |
| CN110062503A (en) | A kind of noiseless White LED Driver based on Boost type DC-DC | |
| CN1159146C (en) | Energy saving device of frequency change injection moulding machine and its energy saving method | |
| CN2814478Y (en) | Special voltage-stabilized source apparatus for instrument and apparatus use | |
| CN2777852Y (en) | Sine wave signal generator | |
| CN211956207U (en) | Intelligent control system of vacuum oil filter | |
| CN113757152B (en) | Speed regulation control circuit and control method for auxiliary converter fan | |
| CN201315563Y (en) | Control circuit of digital variable frequency generator controller | |
| CN110518902A (en) | A kind of pulse width signal isolation and transmission circuit | |
| CN220511002U (en) | Driving circuit of motor | |
| CN2637775Y (en) | Constant pressure water supply automatic controller | |
| CN202918189U (en) | Digital boost switching mode power supply device based on DSP | |
| CN2410814Y (en) | Zero-adjusting universal DC voltage-stabilizing current-stabilizing switch power supply | |
| CN214087840U (en) | Low-noise water purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |