CN2617566Y - Electrohydraulic ratio controlling rubber briquetting machine - Google Patents
Electrohydraulic ratio controlling rubber briquetting machine Download PDFInfo
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- CN2617566Y CN2617566Y CN 02256398 CN02256398U CN2617566Y CN 2617566 Y CN2617566 Y CN 2617566Y CN 02256398 CN02256398 CN 02256398 CN 02256398 U CN02256398 U CN 02256398U CN 2617566 Y CN2617566 Y CN 2617566Y
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- hydraulic
- loading hopper
- hydraulic cylinder
- rubber block
- oil
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Abstract
The utility model discloses an electro-hydraulic proportional controlled rubber block making machine, which belongs to the field of forming pressure machine and comprises an oil pump, a one-way valve, an electric control reversal valve, a hydraulic cylinder and an oil tank connected in sequence by the supply pipe, the piston rod of the hydraulic cylinder is connected with the loading hopper and sealed carriage, which is characterized in that the reversal valve is electro-hydraulic proportional reversal valve, the input end of which oil conduit is connected with the oil pump through the one-way valve, the other end of which is connected with the oil tank; the output end of which oil conduit is directly connected with the hydraulic cylinder; which input end of the electrical control signal is connected with the industrial personal computer PLC through the electric control module and the command module; three position detection switches are arranged on the travel path of the loading hopper, the detector switches are connected with the industrial personal computer PLC. With smooth starting and stopping action, small working noise, simple structure, long service life of hydraulic system and high operation rate of equipment, the utility model can be broadly used for the forming post treatment equipment of rubber products, such as 3-polybutadiene, butylbenzene butyl and butyronitrile rubber products.
Description
Technical field
The utility model belongs to the field of forming press, relates in particular to a kind of pressure head speed control unit of hydraulic drive forcing press.
Background technology
Rubber block press is the key equipment in the polybutadiene rubber equipment postprocessing working procedures, and its effect is that process washing, dried rubber grain are pressed into the niggerhead product, so that pack and transport.
Rubber block press mainly is made of frame and hydraulic system two large divisions, its hydraulic system comprises Hydraulic Station, main hydraulic cylinder and side hydraulic cylinder, Hydraulic Station mainly comprises various hydraulic valves, fuel tank and oil pump, hydraulic valve is the control element of hydraulic system, is used for controlling direction, pressure and the flow of hydraulic system hydraulic fluid; Main hydraulic cylinder and side hydraulic cylinder are the reciprocating motion type piston-type hydraulic cylinder, are the executing agencies of hydraulic system, and each course of action of cuber all drives its piston rod by hydraulic cylinder and finishes.
The main hydraulic cylinder of rubber block press is released the briquetting chamber with the rubber grain briquet and with it, and the side hydraulic cylinder is responsible for driving loading hopper and is sealed coming and going of dolly and move, finish reinforced, seal and block rubber released cuber to actions such as conveyer lines.
The main hydraulic of existing cuber control hydraulic cylinder motion comprises oil pump, check valve, electromagnetism overflow device, electric control reversing valve, one-way throttle valve, pressure switch etc., one end of electric control reversing valve oil circuit input is connected with oil pump through check valve, and the other end is connected with fuel tank through oil return pipe; Its oil circuit output is connected with the hydraulic cylinder oil circuit through one-way throttle valve, the fuel feed pump of oil pump is connected with oil return pipe through the electromagnetism overflow device, the electromagnetism overflow device is installed in the control of the pressure switch on the fuel feed pump, when detecting the fuel feed pump oil pressure, pressure switch exceeds when setting value, the electromagnetism overflow device is opened, and oil feed line is carried out release.The electric control reversing valve that it adopted is an electromagnetism 3-position 4-way formula reversal valve, this solenoid directional control valve is a switch valve, has only the switching two states, its oil circuit is not to be in fully conducting state to be in full closing state exactly, make the mutation status that is changed to of hydraulic fluid flow rate wherein, and flow can only be regulated by the flow of regulating one-way throttle valve.Because the flow of hydraulic oil suddenlys change, cause big, the dry sound of commutation campaign impact of hydraulic cylinder big.And for a long time motion is impacted, and causes that the organism fatigue phenomenon is serious, the hydraulic system seal life is short, fault rate is high; Simultaneously, the impact of commutation motion causes the pressure switch job insecurity, malfunction rate height.The existence of above-mentioned reason has influenced the utilization of capacity of rubber block press greatly.
The utility model content
Technical problem to be solved in the utility model provides a kind of system and constitutes the electric-hydraulic proportion control rubber block press simple, that the motion impact is little, fault rate is low, service life is long.
The technical solution of the utility model is: a kind of electric-hydraulic proportion control rubber block press is provided, comprise the oil pump, check valve, electric control reversing valve, hydraulic cylinder and the fuel tank that connect successively by fuel feed pump, the piston rod of hydraulic cylinder is connected with the sealing dolly with loading hopper, the mobile route of loading hopper is provided with position detecting switch, it is characterized in that described reversal valve is an electro-hydraulic proportion reversing valve, one end of its oil circuit input is connected with oil pump through check valve, and its other end is connected with fuel tank; Its oil circuit output directly is connected with hydraulic cylinder; Its electrical control signal input is connected with industrial computer PLC through electrically-controlled component, command module; Three position detecting switch are set on the mobile route of loading hopper, and sense switch is connected with industrial computer PLC.
The fuel feed pump of wherein said oil pump is connected with oil return pipe through unloader.
Its described three position detecting switch SQ1, SQ2 and SQ3 are separately positioned on the mobile route of loading hopper, and wherein SQ2 and SQ3 are separately positioned on the two ends of loading hopper mobile route, and SQ1 is arranged on the centre position of loading hopper mobile route; Its described electrically-controlled component is amplifier and buffering generator; Described command module is rate selection switch and speed setup unit.
The two ends of the automatically controlled coil S1 of its described electro-hydraulic proportion reversing valve are connected with AC26, the AC28 end of amplifier respectively, and the two ends of its automatically controlled coil S2 are connected with AC30, the AC32 end of amplifier respectively; The signal output part of described position detecting switch SQ1, SQ2 and SQ3 respectively with corresponding connection of I/O port of industrial computer PLC.
Compared with the prior art, the utility model has the advantages that:
1. it is fast that electric liquid is controlled the hydraulic system response automatically, stable action.
2. the working environment noise obviously reduces.
3. level and smooth soft start and stopping, stable action has high control precision.
4. prolong the service life of hydraulic system, reduced maintenance frequency and downtime, improved Housing Starts.
5. there is not high pressure throttling energy loss, the good energy-conserving effect of system.
6. simple in structure, use assembly few, care and maintenance is convenient, saves a large amount of maintenance costs.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is an oil piping system structural representation of the present utility model;
Fig. 2 is the block diagram of the utility model electrical system;
Fig. 3 to Fig. 5 is the mechanical action process schematic diagram of the utility model embodiment;
Fig. 6 is the electro-hydraulic proportion reversing valve control signal oscillogram of the utility model industrial computer PLC output;
Fig. 7 is the electro-hydraulic proportion reversing valve control signal oscillogram of the utility model amplifier output;
Fig. 8 is the movement velocity curve map of the utility model electro-hydraulic proportion reversing valve piston.
The specific embodiment
Among Fig. 1, reversal valve 3 is an electro-hydraulic proportion reversing valve, and an end P of its oil circuit input is connected with oil pump 1 through check valve 2, and its other end T is connected with fuel tank through oil return pipe 8; The ends A of its oil circuit output directly is connected with hydraulic cylinder 4 with B; On the mobile route of the loading hopper 5 that the piston rod by side hydraulic cylinder 4 drives three position detecting switch are set, sense switch is connected with industrial computer PLC (not shown); The fuel feed pump of oil pump is connected with oil return pipe 8 through unloader 6; Between the oil circuit input P and T of electro-hydraulic proportion reversing valve, be connected with by-passing valve 7.
Owing to adopt unloader to replace higher pressure switch and the electromagnetic relief valve of fault rate, simplified the formation of hydraulic system, the stability of its operating pressure is improved.In addition, omitted the one-way throttle valve that is arranged on the electrohydraulic proportional control valve oil circuit input oil circuit, whole hydraulic system does not have high pressure throttling energy loss, and system energy consumption is low, and energy-saving effect is obvious.
Among Fig. 2, the piston rod of side hydraulic cylinder 4 drives loading hopper 5 and seals dolly 12 and move, and seals the connecting rod 13 that is provided for fixed test inductive switching piece 14 on the dolly, and main cylinder pressure 9 drives binder piston 10 and moves in binder chamber 11; The electric control element YV1 of the electro-hydraulic proportion reversing valve 3 of control side hydraulic cylinder 4 actions and the electrical control signal input of YV2 are connected with the corresponding I/O port of industrial computer PLC (not shown) with speed setup unit 18 through amplifier 15, buffering generator 16, rate selection switch group 17; An end ground connection of adjustable resistance in the speed setup unit 18, the other end is connected with the corresponding I/O port of PLC; Rate selection switch is used to the speed of selecting side hydraulic cylinder 4 to move, the buffering generator is used for changing the step signal that PLC sends here into ramp signal, promptly after PLC sends the step change type movable signal, the buffering generator changes step signal into ramp signal, progressively increase along with signal level or electric current, the aperture of electro-hydraulic proportion reversing valve increases gradually, and the hydraulic pressure oil mass progressively increases, and piston rod drives loading hopper and seals dolly and accelerates to stable high speed gradually; Otherwise, after sending the step signal that stops to move as PLC, the output signal of buffering generator reduces gradually, progressively reduction along with signal level or electric current, the aperture of electro-hydraulic proportion reversing valve reduces gradually, the hydraulic pressure oil mass is progressively successively decreased, and piston rod drives loading hopper and seals dolly and slows down until parking gradually, thereby the motion of having avoided causing hydraulic cylinder piston because of suddenly, sharply changing of hydraulic pressure oil mass is impacted.
The acceleration, deceleration stroke of hydraulic cylinder piston or acceleration, deceleration time, can set and regulate by the buffering generator.
Simultaneously; because the movement velocity of hydraulic jack is controlled by the control level of buffering generator output or the size of electric current; so in oil circuit, just can cancel the setting of one-way throttle valve; promptly simplify system's formation, reduced tie point and leakage point, reduced kind, the quantity of the use parts and the standby redundancy of hydraulic system again; prolonged the service life of hydraulic system; reduce maintenance frequency and downtime, saved maintenance cost, improved utilization rate of equipment and installations.
Among Fig. 3 to Fig. 5, when the piston of side hydraulic cylinder during to left movement, the sensor block 14 of sense switch passes through sense switch SQ3, SQ1 and SQ2 successively, when sensor block during through wherein SQ3, SQ2, the sense switch sender, as the commencing signal that hydraulic cylinder quickens or slows down, switch S Q1 is used to seal the detection and localization of dolly.
When the side hydraulic cylinder piston was positioned at foremost, loading hopper 5 just in time was positioned at the opening top place in binder chamber 11, by loading hopper rubber grain was packed in the binder chamber, and the binder piston 10 that this moment, main hydraulic cylinder drove is positioned at bottommost; After material was filled it up with, the side hydraulic cylinder piston moved right, and seals dolly 12 the binder chamber is sealed; Then move on the main hydraulic cylinder piston, with the rubber grain briquet in the binder chamber; The side hydraulic cylinder piston moves to rearmost end once more backward, seals the opening part that dolly leaves the binder chamber, and the binder chamber is opened; This moment, the main hydraulic cylinder piston moved on once more, and the block rubber that suppresses is ejected the binder chamber; When the piston of side hydraulic cylinder moves forward once more, block rubber is released cuber; The piston of main hydraulic cylinder resets once more and moves down, and begins next working cycles.
Among Fig. 6 to Fig. 8, abscissa is time t, and ordinate is control voltage U or piston movement speed V.Industrial computer PLC sends the electro-hydraulic proportional valve opening signal in time T 1, send the electro-hydraulic proportional valve shutdown signal in time T 3, this step signal is through the processing of buffering generator and the amplification of amplifier, is transformed to the gradual control signal that begins to rise, reaches maximum, begins to descend, finishes to time T 4 from time T 3 to time T2 from time T 1.Under the control of this gradual control signal, the piston of electro-hydraulic proportion reversing valve control hydraulic cylinder quickens-constant speed-retarded motion according to the shown time-speed change curves of Fig. 8.Because at the startup and the stop phase of piston, its speed increases progressively gradually and gradually reduces, so the motion impact phenomenon of having avoided common employing electromagnetic switch to be produced.
Electro-hydraulic proportion reversing valve can be selected the products that function is identical, parameter is close such as DHRZO-P5-012/25 or DHRZO-P5-012/20 for use in the above-mentioned parts; Buffering generator and amplifier can be selected E-ME-AC-05F/RR-4 type proportional amplifier for use; Position detecting switch both can be selected the contact sense switch for use, as the mechanical detection switch, can select the non-contact detection switch for use again, and as photo-electric sense switch or proximity sense switch, other mechanical parts or electrical equipment do not have specific (special) requirements.
Because amplifier, buffering generator, rate selection switch group, speed setup unit, industrial computer PLC, position detecting switch and electro-hydraulic proportion reversing valve itself are prior art, so its operation principle and structure are no longer narrated at this.
The utility model can be widely used in the rubber equipment for after-treatments such as moulding along rubber products such as fourth, butylbenzene butyl, Ding Qing.
Claims (7)
1. an electric-hydraulic proportion is controlled rubber block press, comprise the oil pump, check valve, electric control reversing valve, hydraulic cylinder and the fuel tank that connect successively by fuel feed pump, the piston rod of hydraulic cylinder is connected with the sealing dolly with loading hopper, and the mobile route of loading hopper is provided with position detecting switch, it is characterized in that:
Described reversal valve is an electro-hydraulic proportion reversing valve, and an end of its oil circuit input is connected with oil pump through check valve, and its other end is connected with fuel tank; Its oil circuit output directly is connected with hydraulic cylinder; Its electrical control signal input is connected with industrial computer PLC through electrically-controlled component, command module;
Three position detecting switch are set on the mobile route of loading hopper, and sense switch is connected with industrial computer PLC.
2. according to the described electric-hydraulic proportion control of claim 1 rubber block press, it is characterized in that the fuel feed pump of described oil pump is connected with oil return pipe through unloader.
3. according to the described electric-hydraulic proportion control of claim 1 rubber block press, it is characterized in that described three position detecting switch SQ1, SQ2 and SQ3 are separately positioned on the mobile route of loading hopper, wherein SQ2 and SQ3 are separately positioned on the two ends of loading hopper mobile route, and SQ1 is arranged on the centre position of loading hopper mobile route.
4. according to the described electric-hydraulic proportion control of claim 1 rubber block press, it is characterized in that described electrically-controlled component is amplifier and buffering generator.
5. according to the described electric-hydraulic proportion control of claim 1 rubber block press, it is characterized in that described command module is rate selection switch and speed setup unit.
6. according to the described electric-hydraulic proportion control of claim 1 rubber block press, the two ends that it is characterized in that the automatically controlled coil YV1 of described electro-hydraulic proportion reversing valve are connected with AC26, the AC28 end of amplifier respectively, and the two ends of its automatically controlled coil YV2 are connected with AC30, the AC32 end of amplifier respectively.
7. according to the described electric-hydraulic proportion of claim 1 control rubber block press, the signal output part that it is characterized in that described position detecting switch SQ1, SQ2 and SQ3 respectively with corresponding connection of I/O port of industrial computer PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02256398 CN2617566Y (en) | 2002-12-27 | 2002-12-27 | Electrohydraulic ratio controlling rubber briquetting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02256398 CN2617566Y (en) | 2002-12-27 | 2002-12-27 | Electrohydraulic ratio controlling rubber briquetting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2617566Y true CN2617566Y (en) | 2004-05-26 |
Family
ID=34238326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02256398 Expired - Lifetime CN2617566Y (en) | 2002-12-27 | 2002-12-27 | Electrohydraulic ratio controlling rubber briquetting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2617566Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205663A (en) * | 2011-03-14 | 2011-10-05 | 南通锻压设备股份有限公司 | Numerically-controlled multi-point side-pressing frame hydraulic machine |
| CN102549273A (en) * | 2009-07-09 | 2012-07-04 | 罗伯特·博世有限公司 | Electro-hydraulic controller |
| CN106369000A (en) * | 2016-11-22 | 2017-02-01 | 天津苑博科技有限公司 | Unloading electrohydraulic control mechanism |
| CN106499683A (en) * | 2016-11-22 | 2017-03-15 | 天津苑博科技有限公司 | Electrohydraulic controlling mechanism |
| CN109019070A (en) * | 2018-10-02 | 2018-12-18 | 郑州鼎源自动化科技有限公司 | A kind of quick high accuracy wireless mobile distribution, device, system |
-
2002
- 2002-12-27 CN CN 02256398 patent/CN2617566Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102549273A (en) * | 2009-07-09 | 2012-07-04 | 罗伯特·博世有限公司 | Electro-hydraulic controller |
| CN102549273B (en) * | 2009-07-09 | 2016-03-23 | 罗伯特·博世有限公司 | Electrofluidic control device |
| CN102205663A (en) * | 2011-03-14 | 2011-10-05 | 南通锻压设备股份有限公司 | Numerically-controlled multi-point side-pressing frame hydraulic machine |
| CN106369000A (en) * | 2016-11-22 | 2017-02-01 | 天津苑博科技有限公司 | Unloading electrohydraulic control mechanism |
| CN106499683A (en) * | 2016-11-22 | 2017-03-15 | 天津苑博科技有限公司 | Electrohydraulic controlling mechanism |
| CN106499683B (en) * | 2016-11-22 | 2018-11-02 | 唐山远宏电气设备有限公司 | Electrohydraulic controlling mechanism |
| CN109019070A (en) * | 2018-10-02 | 2018-12-18 | 郑州鼎源自动化科技有限公司 | A kind of quick high accuracy wireless mobile distribution, device, system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM & CHEMICAL CORPORATION Free format text: FORMER OWNER: QILU CO., LTD., CHINA PETROCHEMICAL CORP. Effective date: 20070608 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070608 Address after: 100029, No. 6, Xin Xin Street East, Beijing, Chaoyang District Patentee after: Sinopec Corp. Address before: 255408 Linzi District, Shandong, Zibo Patentee before: Sinopec Qilu Petrochemical Company |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121227 Granted publication date: 20040526 |