CN2744445Y - Controlling device for injection in uniform acceleration of cold-chamber die casting machine - Google Patents
Controlling device for injection in uniform acceleration of cold-chamber die casting machine Download PDFInfo
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- CN2744445Y CN2744445Y CN 200320125361 CN200320125361U CN2744445Y CN 2744445 Y CN2744445 Y CN 2744445Y CN 200320125361 CN200320125361 CN 200320125361 CN 200320125361 U CN200320125361 U CN 200320125361U CN 2744445 Y CN2744445 Y CN 2744445Y
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Abstract
The utility model relates to a controlling device for injection in uniform acceleration of a cold-chamber die casting machine, comprising a touch screen, a programmable controller, a D/A converter, an A/D converter, a linear amplification board, a positional ruler, a proportional valve, and a switch. The programmable controller is connected externally with the touch screen, the switch, the input terminal of the D/A converter and output terminal of the A/D converter. The input terminal of the A/D converter is connected externally with the output terminal of the positional ruler, and the output terminal of the D/A converter is connected with the input terminal of the linear amplification board whose output terminal is connected with the proportional valve. The utility model is characterized in that the application of the touch screen is convenient to input and display various parameters, the application of the positional ruler is convenient to measure and control the position of the injecting pole in injection process, the application of the D/A converter makes the control of the proportional valve accurate, and various parameters inputed through the touch screen can be displayed and saved so as to be transfered later conveniently. Besides, the utility model can reduces the amount of the bubble created in the cast, diminishes sharp edge of the cast, reduces wastage of the die, lessens shock vibration of the die-casting device, and improves the quality of the die-casting production apparently.
Description
Technical field
The utility model relates to the even injection control device that quickens of a kind of cold-chamber die casting machine.
Background technology
The present cold-chamber die casting machine that uses, its injection method mostly are 1 fast-3 fast.Die casting machine with one 3 fast die casting is an example, sees Fig. 1, and it is to open three fast valves of pressing in injection process in order, draws pressure oil in the accumulator respectively to realize three grades of fast compression functions.This method can realize three grades of acceleration of injection rod, makes the speed of service of injection rod more and more faster, thereby finishes the fast shot function.
This method has its significant disadvantages:
1. because the latus rectum of each valve is fixed, in the course of the work, be not related to valve, otherwise just open entirely, so accelerator is inhomogeneous, exhaust is not smooth, and bubble is many in the part, vibrates bigger.
2. control open position of each fast pressure valve owing to the employing travel switch, and travel switch is to be difficult for adjustment, the more inconvenient actual conditions of complying with each product are adjusted fast pressure position.
3. can not realize the deceleration control before injection ends, to reduce the damage that product is criticized cutting edge of a knife or a sword and mould is brought because of high speed, high pressure.
Summary of the invention
The purpose of this utility model provides the even injection control device that quickens of a kind of cold-chamber die casting machine, to realize the even acceleration of press casting procedure.
The utility model comprises touch-screen, programmable controller, digital to analog converter, analog-digital converter, proportional amplifier plate, position chi, proportioning valve, switch, it is characterized in that the input of Programmable Logic Controller external touch, switch, digital to analog converter, the output of analog-digital converter, the output of the external position of the input of analog-digital converter chi, the input of the output termination proportional amplifier plate of digital to analog converter, the output termination proportioning valve of proportional amplifier plate.
The utility model has been compared following advantage with present technology:
1,, can import, show various parameters easily with behind the touch-screen.
2, the application of position chi, the position of observing and controlling injection rod in injection process easily.
3, the application of digital to analog converter makes that the control of proportioning valve is very accurate.
4, parameters can both be imported and be shown by screen easily, and is stored, and conveniently calls in the future.
5, can reduce the generation of blow hold, reduce foundry goods and criticize cutting edge of a knife or a sword, reduce the mould loss,
Reduce the impact shock of die casting equipment, improve the quality of die-cast product significantly.
Description of drawings
Fig. 1 is the prior art village firing rate line chart of writing music;
Fig. 2 is the utility model electrical schematic diagram;
Fig. 3 is the utility model position chi installation position structural representation;
Fig. 4 sets the injection speed curve map for the utility model;
Fig. 5 is the utility model actual measurement injection speed curve map.
The specific embodiment
As Fig. 2, shown in Figure 3, the utility model comprises touch-screen 1, programmable controller 2, digital to analog converter 3, analog-digital converter 4, proportional amplifier plate 5, position chi 6, proportioning valve 7, switch 8, it is characterized in that the input of the external touch screen 1 of Programmable Logic Controller, switch 8, digital to analog converter 3, the output of analog-digital converter 4, the output of the external position of the input of analog-digital converter 4 chi 6, the input of the output termination proportional amplifier plate 5 of digital to analog converter 3, the output termination proportioning valve 7 of proportional amplifier plate 5.Chi 6 movable parts in position place injection rod 9 ends, move and change magnitude of voltage with injection rod 9, and this magnitude of voltage connects analog-digital converter 4 inputs.
Touch-screen 1 is used for:
1, output information, as the operation indicating picture, chi 6 strokes in position show, proportioning valve 7 open amounts show, actual and setting injection curve demonstration.
2, input information can be imported the parameters value of injection among the PLC2.
3, be used for the storage of single product injection parameter, when needing, just can be directly used in production in the future as long as access the relevant data of this product.Can store the data of 100 products.
The purposes of position chi 6:
Position chi 6 (claiming electronic ruler again) is used for measuring the position of injection rod 9.Ratio 7 is just adjusted open degree according to the position, reaches the purpose that injection speed is adjusted.
Analog-digital converter 4 (AD) purposes:
Analog-digital converter 4 is used for changing the voltage analog signal of position chi 6 outputs into PLC2 manageable data signal.
Digital to analog converter 3 (DA) purposes:
Digital to analog converter 3 is used for the digital quantity of PLC2 output is converted into the analog voltage signal that proportional amplifier plate 5 can be used.
The signal that digital to analog converter 3 (DA) is come carries out power amplification, promotes proportioning valve 7 work.
Proportioning valve 7:
By the open degree of proportioning valve 7 adjust by accumulator 11 enter injection oil cylinder 10 pressure oil flow in case control injection speed.
Switch 8:
Various hand switch 8 inputs to PLC2 with signal, finishes various manual operations.
Touch-screen 1, programmable controller 2, digital to analog converter 3, analog-digital converter 4, position chi 6, amplification plate 5, proportioning valve 7 select for use general part to constitute, for example, touch-screen 1 is selected HITECH1760 for use, Programmable Logic Controller is selected FX2-96MT for use, digital to analog converter 3 is selected FX-4DA for use, and analog-digital converter 4 is selected FX-4AD for use, and position chi 6 is selected general electronic ruler for use, amplify plate and select Rexroth VT30012-2x/48F for use, touch screen 1 screen is connected with the RS232 cable with programmable controller.
Control procedure:
When injection rod 9 carries out the injection action, the central shaft heads that drives position chi 6 moves in position chi 6, detect voltage signal Δ V, Δ V input analog-to-digital converter 4, after computer is handled,, go control ratio to amplify plate 5 again by the output signal of digital to analog converter 3, proportional amplifier plate 5 goes the inlet of the moving controlled pressure oil of unlatching of control ratio valve 7, thus the gait of march of control injection rod 9.So, the gait of march of having finished injection rod 9 becomes to spare the relation of acceleration with the position that position chi 6 measures.
After the injection action beginning, programmable controller 2 measuring position chis 6 present positions, when the fast pressure of position chi 6 arrival starting point, proportioning valve 7 begins to open, the amount opened of proportioning valve 7 constantly increases with the increase of moving of position chi 6 subsequently, is linear with the amount of movement of position chi 6 by this increase of programmable controller 2 controls, when arriving decelerate position, proportioning valve 7 turns down setting value rapidly, finishes speed-down action.
The injection speed curve of Fig. 4 on screen, setting.Fig. 5 is for surveying the injection speed curve.
Claims (2)
1. a cold-chamber die casting machine is spared acceleration injection control device, comprise touch-screen, programmable controller, digital to analog converter, analog-digital converter, proportional amplifier plate, position chi, proportioning valve, switch, it is characterized in that the input of Programmable Logic Controller external touch, switch, digital to analog converter, the output of analog-digital converter, the output of the external position of the input of analog-digital converter chi, the input of the output termination proportional amplifier plate of digital to analog converter, the output termination proportioning valve of proportional amplifier plate.
2. the even injection control device that quickens of a kind of cold-chamber die casting machine according to claim 1 is characterized in that position chi movable part places the injection rod end to follow injection rod motion and change magnitude of voltage, connects the analog-digital converter input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320125361 CN2744445Y (en) | 2003-12-23 | 2003-12-23 | Controlling device for injection in uniform acceleration of cold-chamber die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320125361 CN2744445Y (en) | 2003-12-23 | 2003-12-23 | Controlling device for injection in uniform acceleration of cold-chamber die casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2744445Y true CN2744445Y (en) | 2005-12-07 |
Family
ID=35579232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320125361 Expired - Fee Related CN2744445Y (en) | 2003-12-23 | 2003-12-23 | Controlling device for injection in uniform acceleration of cold-chamber die casting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2744445Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355519C (en) * | 2006-07-07 | 2007-12-19 | 瑞玛泰（北京）科技有限公司 | Magnesium alloy liquid controlling device |
| CN102218522A (en) * | 2011-06-03 | 2011-10-19 | 柯有权 | Quality comprehensive control system for die casting machine |
| CN106593988A (en) * | 2017-01-25 | 2017-04-26 | 宁波海天金属成型设备有限公司 | Oil return structure of injection oil cylinder |
| CN112024847A (en) * | 2020-08-31 | 2020-12-04 | 宁波力劲科技有限公司 | PID control system and control method for mold opening and locking of die casting machine |
-
2003
- 2003-12-23 CN CN 200320125361 patent/CN2744445Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355519C (en) * | 2006-07-07 | 2007-12-19 | 瑞玛泰（北京）科技有限公司 | Magnesium alloy liquid controlling device |
| CN102218522A (en) * | 2011-06-03 | 2011-10-19 | 柯有权 | Quality comprehensive control system for die casting machine |
| CN106593988A (en) * | 2017-01-25 | 2017-04-26 | 宁波海天金属成型设备有限公司 | Oil return structure of injection oil cylinder |
| CN106593988B (en) * | 2017-01-25 | 2018-09-25 | 宁波海天金属成型设备有限公司 | A kind of oil-returning structure of injection oil cylinder |
| CN112024847A (en) * | 2020-08-31 | 2020-12-04 | 宁波力劲科技有限公司 | PID control system and control method for mold opening and locking of die casting machine |
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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 |