CN201791948U - Electric control device for stopper rod of press pouring furnace - Google Patents
Electric control device for stopper rod of press pouring furnace Download PDFInfo
- Publication number
- CN201791948U CN201791948U CN2010205032720U CN201020503272U CN201791948U CN 201791948 U CN201791948 U CN 201791948U CN 2010205032720 U CN2010205032720 U CN 2010205032720U CN 201020503272 U CN201020503272 U CN 201020503272U CN 201791948 U CN201791948 U CN 201791948U
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- stopper
- circuit
- switch
- control
- stopper rod
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Abstract
The utility model discloses an electric control device for a stopper rod of a press pouring furnace. The electric control device adopts the structure that a programmable logic controller (PLC), a servo amplifier and a servomotor together form a control system, and analog signals collected by the PLC comprise lifting signals and position feedback signals; switch signals comprise position inductive switching signals; and output signals are connected with the control circuit of the servo amplifier. The motor drives a major loop power source to be connected with the control circuit of the servo amplifier and the servomotor; a lifting signal circuit is connected with an analog mix key switching circuit; position feedback signals are connected with a position transmitter; a position inductive switching circuit is connected with at least three SWK switches; the servomotor and a ball screw drive the stopper rod, an inductive position switch and a stopper rod position sensor; and the PLC controls the stopper rod to lift up and down. The electric control device has the advantages that the service life of the stopper rod is prolonged, maintenance and cutting cost is reduced, the pouring quality is improved, and loss of molten iron, environmental pollution and incidence of accidents are reduced, and is widely applied to the production line of novel press pouring furnaces or the modification of control systems of old press pouring furnaces.
Description
Technical field
The utility model relates to the molten iron Casting Equipment, is specifically related to the stopper electrical control gear of press pouring furnace.
Background technology
At present, in the casting parts of industries such as China's automobile, tractor were produced, the press pouring furnace that its foundry production line uses increased year by year.On casting casting line, use press pouring furnace can enhance productivity, improve the casting quality, cut down the consumption of energy.
Foundry's production model is generally: furnace cupola or intermediate frequency (IF) smelting stove dissolve molten iron, regulate composition by holding furnace and regulate rhythm of production simultaneously, and the press pouring furnace on the casting casting line is accepted the molten iron of holding furnace, realizes online quick casting.The gas of adding certain pressure for the press pouring furnace burner hearth just can extrude body of heater with the molten iron in the stove, opens the stopper on the air pressure stove, and molten iron just can pour into the sand mold on the foudry line; Close stopper, stop casting.In casting cycle, when stopper is opened, certain speed must be arranged, to guarantee the requirement of casting process.In casting cycle, must adjust the stopper position at any time, reach the flow of regulating the casting gate molten iron.When stopper is closed, must close casting gate fully, guaranteeing that molten iron can not have to run emits phenomenon, in order to avoid cause molten iron to leak or trickle down on casting production line.So being controlled on the press pouring furnace of stopper is very important.
Current, the action drives mode of the stopper of air pressure stove is motor-leading screw or two kinds of control modes of proportioning valve-cylinder, and regulating control mode is that the location, position is regulated control or adopted the control of PID speed.Though can reach the function of control stopper open and close, also can onlinely cast, there are certain disadvantage and shortcoming.Especially in closing closed procedure.The main problem that exists has:
1, during excessive velocities or during the inaccuracy of position, cause the rapid wear of stopper easily, it is frequent that stopper is changed, and increases equipment operating cost.
When 2, being applied in Position Control, too much when the stopper wearing and tearing, then stopper is not closed completely, and causes molten iron to leak.Must change stopper this moment, causes the stopper consuming cost to increase.
When 3, using air cylinder driven, because the action great efforts cause stopper to fracture easily.Must change stopper equally, cause the stopper consuming cost to increase.And the generation that causes the accident easily.
Summary of the invention
The purpose of this utility model provides a kind of structure tube list, and is easy to use, prolongs stopper service life, reduces maintenance, the stopper electric control theory and the device of the press pouring furnace that reduces production costs.
In order to overcome the deficiencies in the prior art, the technical solution of the utility model is to solve like this: a kind of special character of stopper controller for electric consumption of press pouring furnace be by a Programmable Logic Controller respectively with lifting control signal circuit, the position feed back signal circuit, the location sensitive on-off circuit, the servo amplifier control circuit connects to form, described servo amplifier control circuit respectively with three-phase alternating-current supply, servomotor connects, lifting control signal circuit connects the analog quantity of an adjustable resistance R and mixes the key switch button, position feed back signal circuit link position transmitter, the location sensitive on-off circuit is connected with the SWK1 switch respectively, the SWK2 switch, the SWK3 switch, servomotor-ball-screw drives stopper, the Controlled by Programmable Controller stopper is the sensed position switch up and down, the stopper position sensor, the lifting signal circuit and the analog quantity of described stopper are mixed key switch circuit and are connected.
Above-mentioned position feed back signal circuit and the program of PLC are formed a stopper moment and are compressed control and limit protection circuit.
Description of drawings
Fig. 1 is a circuit structure schematic block diagram of the present utility model;
Fig. 2 is the operational flow diagram of Fig. 1.
The specific embodiment
Accompanying drawing is embodiment of the present utility model.
Below in conjunction with accompanying drawing summary of the invention is described further:
With reference to shown in Figure 1, a kind of stopper controller for electric consumption of press pouring furnace by a Programmable Logic Controller respectively with lifting control signal circuit, the position feed back signal circuit, the location sensitive on-off circuit, the servo amplifier control circuit connects to form, described servo amplifier control circuit respectively with three-phase alternating-current supply, servomotor connects, described lifting control signal circuit connects an adjustable resistance R, described position feed back signal circuit connects a rectifier bridge, described location sensitive on-off circuit is connected with the SWK1 switch respectively, the SWK2 switch, the SWK3 switch, servomotor-ball-screw drives stopper, described Controlled by Programmable Controller stopper is the sensed position switch up and down, the stopper position sensor, the lifting signal circuit and the analog quantity of described stopper are mixed key switch circuit and are connected.
Above-mentioned position feed back signal circuit and the program of PLC are formed a stopper moment and are compressed control and limit protection circuit.
Figure 2 shows that the operational flow diagram of device, after device was connected three phase mains, the computer software flow process was started working, and carries out according to the following steps:
1), at first detects lifting control signal usr;
2), detection position feedback signal uf;
3), send into usc signal of output behind the PID internalarithmetic with the difference of Usr-uf=usc;
4), the Usc signal is exported to servo amplifier;
5), the signal of above-mentioned servo amplifier divides two-way output, wherein one the tunnel is defeated by servomotor, another road is defeated by stopper and is arrived the lower position;
6) if stopper is the lower position, stopper is closed, and applies clamping torque to stopper simultaneously, if stopper is not the lower position, otherwise returns first step;
7), the signal of above-mentioned clamping torque divides two-way output, wherein one the tunnel is defeated by servo amplifier, another road is defeated by stopper and is arrived the upper and lower limit position;
8), above-mentioned stopper arrives the upper and lower limit position if then export a signal and lock to stopping, otherwise return first step;
9), the above-mentioned locking signal that stops to divide two-way output, wherein one the tunnel is defeated by servo amplifier, another road otherwise return first step.
In sum, traditional casting production line uses casting machine or artificial ladle casting, uses the air pressure casting furnace to carry out online casting, improve production efficiency and product quality to a great extent.
Press pouring furnace adopts novel stopper control, can better improve usage ratio of equipment.The control principle of novel stopper is: when stopper is closed, apply suitable clamping torque to stopper, promptly can close the casting head piece of air pressure stove closely, can guarantee that again stopper is not by backfin.
The line construction of stopper control drives employing servomotor-ball-screw for the stopper master, and electric major loop adopts the servo amplifier drive motors.Control loop adopts PLC control and configuration stopper sensed position switch, stopper position sensor up and down, and the lifting of control stopper adopts analog quantity to mix key switch.
Stopper moves control and adopts Torque Control, mix the angular dimension of pulling of key switch according to analog quantity, analog input signal and position feed back signal difference are carried out Position Control by the PID program of PLC, reach the quick position adjustments control of stopper, to satisfy the casting process requirement of casting production line.When stopper arrived upper limit position, the programme-control stopper stopped to move.When stopper reached the closed position, stopper location sensitive switch sent signal, and stopper stops to descend, and give fixing decline torque signals of motor this moment, compresses the casting head piece to guarantee stopper, and molten iron is flowed out.Simultaneously, the inner limit protection control circuit that also has according to the position feed back signal setting of program is with the plant equipment of protection stopper driving.
The utility model compared with prior art, the stopper controller for electric consumption of this press pouring furnace is respond well by the actual motion of experimental prototype, the stopper normal consumption is brought up to present 28-30 hour/root from original 12-14 hour/root, (originally weekly at most the time, fracture 3～4) simultaneously in use also do not occur fractureing. About 300 yuan of every stopper price, so annual for factory can save considerable resource, reduced simultaneously production cost and the cost of overhaul. Also have simultaneously following beneficial effect:
1, prolongs stopper service life, reduce maintenance, reduce production costs.
2, improve control accuracy, guarantee to water casting production process and casting quality.
3, the assurance stopper is reliably closed, and reduces molten iron and runs off and environmental pollution.
4, reduce accident rate, guarantee the safety coefficient of the person and equipment.
Be widely used in the casting industry press pouring furnace production line on new or transform old pressure pouring furnace control system.
Claims (2)
1. the stopper electrical control gear of a press pouring furnace, it is characterized in that by a Programmable Logic Controller respectively with lifting control signal circuit, the position feed back signal circuit, the location sensitive on-off circuit, the servo amplifier control circuit connects to form, described servo amplifier control circuit respectively with three-phase alternating-current supply, servomotor connects, control mode is progressive number PID and clamping torque control, described lifting control signal circuit connects the analog quantity of an adjustable resistance R composition and mixes key switch, described position feed back signal circuit connects a position transmitter, described location sensitive on-off circuit is connected with the SWK1 switch respectively, the SWK2 switch, the SWK3 switch, described servomotor-ball-screw drives stopper, described Controlled by Programmable Controller stopper is sensed position switch and stopper position sensor up and down, and the lifting signal circuit and the analog quantity of described stopper are mixed key switch circuit and be connected.
2. the stopper controller for electric consumption of press pouring furnace according to claim 1 is characterized in that stopper moment of program composition of above-mentioned position feed back signal circuit and PLC compresses control and limit protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205032720U CN201791948U (en) | 2010-08-24 | 2010-08-24 | Electric control device for stopper rod of press pouring furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205032720U CN201791948U (en) | 2010-08-24 | 2010-08-24 | Electric control device for stopper rod of press pouring furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201791948U true CN201791948U (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205032720U Expired - Fee Related CN201791948U (en) | 2010-08-24 | 2010-08-24 | Electric control device for stopper rod of press pouring furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201791948U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871314A (en) * | 2014-04-08 | 2014-06-18 | 温州大学 | Classroom type casting system simulator |
| CN108580864A (en) * | 2018-07-02 | 2018-09-28 | 聊城信源集团有限公司 | A kind of anode carbon block assembling ferrophosphorus casting system |
| CN109530647A (en) * | 2018-12-28 | 2019-03-29 | 武汉泛洲中越合金有限公司 | D.C.casting automatic flow control device and flow control method |
-
2010
- 2010-08-24 CN CN2010205032720U patent/CN201791948U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871314A (en) * | 2014-04-08 | 2014-06-18 | 温州大学 | Classroom type casting system simulator |
| CN108580864A (en) * | 2018-07-02 | 2018-09-28 | 聊城信源集团有限公司 | A kind of anode carbon block assembling ferrophosphorus casting system |
| CN108580864B (en) * | 2018-07-02 | 2023-11-21 | 聊城信源集团有限公司 | Anode carbon block assembled ferrophosphorus casting system |
| CN109530647A (en) * | 2018-12-28 | 2019-03-29 | 武汉泛洲中越合金有限公司 | D.C.casting automatic flow control device and flow control method |
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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: XI N QINXIANG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: XI'AN QINXIANG SCIENCE + TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 9 building, building 710075, AVIC 15, hi tech Road, hi tech Development Zone, Shaanxi, Xi'an Patentee after: Xi'an QinXiang Technology Co., Ltd. Address before: 9 building, building 710075, AVIC 15, hi tech Road, hi tech Development Zone, Shaanxi, Xi'an Patentee before: Xi'an Qinxiang Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20170824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |