CN203993501U - Pneumatic control system - Google Patents
Pneumatic control system Download PDFInfo
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- CN203993501U CN203993501U CN201420459358.6U CN201420459358U CN203993501U CN 203993501 U CN203993501 U CN 203993501U CN 201420459358 U CN201420459358 U CN 201420459358U CN 203993501 U CN203993501 U CN 203993501U
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- magnetic valve
- valve
- control system
- master cylinder
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Abstract
The utility model provides a kind of pneumatic control system, described pneumatic control system goes for twin grinding or polishing machine, it comprises master cylinder, main gas circuit, first time loop, second time loop, upper loop and precise pressure regulating valve, wherein, described master cylinder comprises epicoele and cavity of resorption, described first time loop is provided with the first magnetic valve, described second time loop is provided with interconnective the second magnetic valve and the 3rd magnetic valve, described upper loop comprises the electric Proportion valve connecting successively, the 4th magnetic valve and the 5th magnetic valve, wherein, described cavity of resorption is connected to described main gas circuit by described first time loop, and be connected to described precise pressure regulating valve by described second time loop, described epicoele is connected to described precise pressure regulating valve by described upper loop, and described precise pressure regulating valve is further connected to described main gas circuit.
Description
Technical field
The utility model relates to pneumatic control system, especially, relates to the pneumatic control system of a kind of twin grinder or polishing machine.
Background technology
Double-faced grinding/polishing machine is widely used in field of machining, is used for object to carry out the processing such as surface grinding or polishing.Existing accurate double-faced grinding/polishing machine is generally realized pressure control by pneumatic control system, and its pressure control generally can only realize the conversion of three species stage pressure, cannot meet the day by day multifarious demand of grinding/glossing.On the other hand, in the time there is power-off, source of the gas disconnection or blowby gas path, the upper dish of double-faced grinding/polishing machine may drag master cylinder piston and fall rapidly, causes workpiece and device damage, even injures operating personnel.
Utility model content
One of them object of the present utility model is the above-mentioned defect in order to improve prior art and a kind of pneumatic control system that goes for twin grinder or polishing machine is provided.
The pneumatic control system that the utility model provides, comprise master cylinder, main gas circuit, first time loop, second time loop, upper loop and precise pressure regulating valve, wherein, described master cylinder comprises epicoele and cavity of resorption, described first time loop is provided with the first magnetic valve, described second time loop is provided with interconnective the second magnetic valve and the 3rd magnetic valve, described upper loop comprises the electric Proportion valve connecting successively, the 4th magnetic valve and the 5th magnetic valve, wherein, described cavity of resorption is connected to described main gas circuit by described first time loop, and be connected to described precise pressure regulating valve by described second time loop, described epicoele is connected to described precise pressure regulating valve by described upper loop, and described precise pressure regulating valve is further connected to described main gas circuit.
In a kind of preferred embodiment of the pneumatic control system that the utility model provides, described the first magnetic valve, described the second magnetic valve, described the 3rd magnetic valve, described the 4th magnetic valve and described the 5th magnetic valve are through type two-position three way magnetic valve.
In a kind of preferred embodiment of the pneumatic control system that the utility model provides, described the first magnetic valve, described the 3rd magnetic valve and described the 5th magnetic valve are separately installed with plug, and described the second magnetic valve and described the 4th magnetic valve are provided with muffler.
In a kind of preferred embodiment of the pneumatic control system that the utility model provides, described master cylinder also comprises the piston being arranged between described epicoele and described cavity of resorption, and the rod end of described piston is connected with dish.
In a kind of preferred embodiment of the pneumatic control system that the utility model provides, described master cylinder is provided with three magnetic switches, wherein two magnetic switches are separately positioned on upper limit and the lower limit of described master cylinder, and another magnetic switch be arranged on described master cylinder in spacing; Wherein said upper limit in the fast lifting region that is described upper dish, region between spacing, and the spacing slow lifting region that is described upper dish to the region between described lower limit in described.
In a kind of preferred embodiment of the pneumatic control system that the utility model provides, the cavity of resorption of described master cylinder is connected with guiding one-way valve, and described guiding one-way valve is connected to described main gas circuit by pilot circuit.
In a kind of preferred embodiment of the pneumatic control system that the utility model provides, described first time loop and described second time loop are connected to the cavity of resorption of described master cylinder by described guiding one-way valve.
In a kind of preferred embodiment of the pneumatic control system that the utility model provides, also comprise safety return circuit, described safety return circuit comprises the 6th magnetic valve and has the safety air cylinder of locking device.
In a kind of preferred embodiment of the pneumatic control system that the utility model provides, described safety air cylinder is single-acting spring press out type safety air cylinder.
In a kind of preferred embodiment of the pneumatic control system that the utility model provides, described the 6th magnetic valve is similarly through type two-position three way magnetic valve, and it is provided with muffler.
Compared to prior art, the pneumatic control system that the utility model provides can be realized by five magnetic valves, precise pressure regulating valve and an electric Proportion valve " rising soon ", " falling soon ", " slow liter " and " delay and fall " four actions of the upper dish that described master cylinder rod end is connected, and can realize the digitlization of described upper dish " slow falling " the after-applied pressure on workpiece that puts in place is accurately controlled by adjustment electric Proportion valve, thereby meet twin grinding and the day by day multifarious demand of glossing.On the other hand; described pneumatic control system is also equipped with multiple gas circuit protection to realize safeguard protection, causes workpiece and device damage or injury staff's situation thereby the piston that described in avoiding in the time there is power-off, source of the gas disconnection or blowby gas path, upper dish drags described master cylinder falls.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing using during embodiment is described is briefly described.
Fig. 1 is the structural representation of a kind of embodiment of pneumatic control system of providing of the utility model.
Detailed description of the invention
Refer to Fig. 1, it is the structural representation of a kind of embodiment of pneumatic control system of providing of the utility model.Described pneumatic control system 100 goes for twin grinder or polishing machine, and it comprises master cylinder 110, main gas circuit 120, first time loop 130, second time loop 140, upper loop 150 and safety return circuit 160.
Wherein, described master cylinder 110 comprises epicoele 111, cavity of resorption 112 and the piston 113 between described epicoele 111 and described cavity of resorption 112.Wherein, described cavity of resorption 112 is connected to the output 124 of described main gas circuit 120 by described first time loop 130 and described second time loop 140 of parallel setting mutually, and is connected with precise pressure regulating valve 190 between described second time loop 140 and the output 124 of described main gas circuit 120.Described epicoele 111 is connected to described precise pressure regulating valve 190 by described upper loop 150, and is further connected to the output 124 of described main gas circuit 120 by described precise pressure regulating valve 190.
The rod end of described piston 113 can be connected to the upper dish 101 of twin grinder or polishing machine, and described upper dish 101 is oppositely arranged with the lower wall 102 of described twin grinder or polishing machine, and workpiece can be arranged between described upper dish 101 and described lower wall 102.
In specific embodiment, described master cylinder 110 can be provided with three magnetic switches, the high-low limit position (being upper limit and lower limit) of wherein said master cylinder 110 can arrange respectively a magnetic switch, and another magnetic switch can be arranged on the middle and lower part (spacing) of described master cylinder 110.Wherein, described upper limit in region between spacing be the fast lifting region of described upper dish 101, and the spacing extremely region between described lower limit is the slow lifting region of described upper dish 101 in described, particularly, the fast lifting of dish operation on can not carrying out in described slow lifting region.
Described main gas circuit 120 comprises source of the gas 121, filtering pressure reducing valve 122 and pressure switch 123, wherein said filtering pressure reducing valve 122 is connected between described source of the gas 121 and described pressure switch 123, and described pressure switch 123 can further be connected to the output 124 of described main gas circuit 120.
Between described first time loop 130 and described second time loop 140 and the cavity of resorption 112 of described master cylinder 110, can be connected with guiding one-way valve 180.In addition, described guiding one-way valve 180 can be connected to described main gas circuit 120 by pilot circuit.
Described first time loop 130 is connected between described guiding one-way valve 180 and the output 124 of described main gas circuit 120, and it comprises interconnective the first intake-air throttle valve 132 and the first magnetic valve 131.Described first time loop is mainly used in the fast lifting of the piston 113 of controlling described master cylinder 110.
Described second time loop 140 is connected between described guiding one-way valve 180 and described precise pressure regulating valve 190, and it comprises the second intake-air throttle valve 141, the second magnetic valve 142, the 3rd magnetic valve 143 and the first exhaust shutter 144.Described the second intake-air throttle valve 141, described the second magnetic valve 142, described the 3rd magnetic valve 143 and described the first exhaust shutter 144 are connected in turn between described precise pressure regulating valve 190 and described guiding one-way valve 180, in addition, described precise pressure regulating valve 190 can also be connected with contrary pressure table 191.Described second time loop is mainly used in slow lifting and the fast-descending of the piston 113 of controlling described master cylinder 110.
Described upper loop 150 is connected between the epicoele 111 and described precise pressure regulating valve 190 of described master cylinder 110, and it comprises oil mist separator 151, micro-mist separator 152, electric Proportion valve 153, the 4th magnetic valve 154, the 5th magnetic valve 155 and the second exhaust shutter 156.Described oil mist separator 151, described micro-mist separator 152, described electric Proportion valve 153, described the 4th magnetic valve 154, described the 5th magnetic valve 155 and described the second exhaust shutter 156 are connected in turn between described precise pressure regulating valve 190 and the epicoele 111 of described master cylinder 110, and described electric Proportion valve 153 can also be connected with malleation table 157.The electric-control system of described twin grinder or polishing machine can be adjusted described upper dish 101 by the output pressure of the described electric Proportion valve 153 of real-time adjustment and act on the pressure on workpiece.
Described safety return circuit 160 can be connected to the output 124 of described main gas circuit 120; it comprises the safety air cylinder 161, the 3rd intake-air throttle valve 162 and the 6th magnetic valve 163 that connect successively, and described safety return circuit 160 is mainly used to realize the safeguard protection of described twin grinder or polishing machine.
In the present embodiment, described the first magnetic valve 131, the second magnetic valve 142, the 3rd magnetic valve 143, the 4th magnetic valve 154, the 5th magnetic valve 155 and the 6th magnetic valve 163 can be through type two-position three way magnetic valve, wherein, the steam vent of described the second magnetic valve 142, described the 4th magnetic valve 154 and described the 6th magnetic valve 163 can be separately installed with muffler, and the steam vent of described the first magnetic valve 131, described the 3rd magnetic valve 143 and described the 5th magnetic valve 155 can be separately installed with plug.In the time that described the first magnetic valve 131, described the second magnetic valve 142 and described the 3rd magnetic valve 143 are not switched on, the gas circuit of the cavity of resorption 112 of described master cylinder 110 is sealed by the plug of described the first magnetic valve 131 and described the 3rd magnetic valve 143; And in the time that described the 4th magnetic valve 154 and described the 5th magnetic valve 155 are not switched on, the gas circuit of the epicoele 111 of described master cylinder 110 is sealed by the plug of described the 5th magnetic valve 155.
The pneumatic control system 100 providing for better understanding the utility model, below simply introduces the course of work of described pneumatic control system.
One, upper dish action control
After described the first magnetic valve 131 and described the 5th magnetic valve 155 energisings, the cavity of resorption 112 of described master cylinder 110 is connected described main gas circuit 120 by described the first magnetic valve 131, and the epicoele 111 of described master cylinder 110 is communicated with the silencer of described the 4th magnetic valve 154 steam vents, therefore, described first time loop 130 is to cavity of resorption 112 air feed of described master cylinder 110, and the epicoele 112 of described master cylinder 110 is by the outside exhaust in described upper loop 150, therefore the upwards lifting of piston 113 of described master cylinder, thus realize the fast lift operations of described upper dish 101.
After described the 3rd magnetic valve 143 and described the 5th magnetic valve 155 energisings, the cavity of resorption 112 of described master cylinder 110 is communicated with the silencer of described the second magnetic valve 142 steam vents, and therefore the cavity of resorption 112 of master cylinder 110 can be by the outside exhaust in described second time loop 140; On the other hand, the epicoele 111 of described master cylinder 110 is communicated with the silencer of described the 4th magnetic valve 154 steam vents, and therefore the epicoele 111 of master cylinder 110 is by the outside exhaust in described upper loop 150.In this case, the piston 113 of described master cylinder 110 coils landing downwards under 101 Gravitative Loads on described, realizes falling soon of described upper dish 101.
After described the second magnetic valve 142, described the 3rd magnetic valve 143 and described the 5th magnetic valve 155 energisings, the cavity of resorption 112 of described master cylinder 110 is communicated with described main gas circuit 120 by described second time loop 140 and described precise pressure regulating valve 190, and therefore described second time loop 140 can be to the cavity of resorption of described master cylinder 110 112 air feed.Simultaneously, the epicoele 111 of described master cylinder 110 is communicated with the silencer of described the 4th magnetic valve 154 steam vents, therefore the epicoele 111 of described master cylinder 110 can be by the outside exhaust in described upper loop 150, thereby makes the upwards lifting of the piston 113 of described master cylinder 110.In this process, compared with above-mentioned first time loop 130, the hoisting velocity of described piston 113 can be controlled by the step-down processing of described precise pressure regulating valve 190 in described second time loop 140, thereby realizes the slow liter of described upper dish 101.
After described the second magnetic valve 142, described the 3rd magnetic valve 143, described the 4th magnetic valve 154 and described the 5th magnetic valve 155 energisings, the cavity of resorption 112 of described master cylinder 110 is communicated with described main gas circuit 120 by described second time loop 140 and described precise pressure regulating valve 190, and therefore described second time loop 140 can be to the cavity of resorption of described master cylinder 110 112 air feed.Simultaneously, the epicoele 111 of described master cylinder 110 is by described the 4th magnetic valve 154 and described the 5th magnetic valve 155 and after described electric Proportion valve 153, access described main gas circuit 110 with described second time loop 140 by same precise pressure regulating valve 190, electric-control system can be adjusted by adjusting the output pressure of described electric Proportion valve 153 slowly the moving down of piston 113 of described cylinder 110, falls thereby realize the slow of described upper dish 101.
Two, upper dish pressure control
When slow the dropping to after the workpiece carrying with described lower wall 102 contacts of described upper dish 101, described the 3rd magnetic valve 143 and described the 5th magnetic valve 155 are switched on, the epicoele 111 of described master cylinder 110 is communicated with the silencer of described the second magnetic valve 142 steam vents, and therefore the cavity of resorption 112 of described master cylinder 110 is by the outside exhaust in described second time loop 140.Meanwhile, the epicoele 111 of described master cylinder 110 is communicated with the silencer of described the 4th magnetic valve 154 steam vents, and therefore the epicoele 111 of described master cylinder 110 is by the outer exhaust of described road direction last time.In this case, the own wt of described upper dish 101 is just for being applied to the pressure of described workpiece, thereby realization is from heavy cutting.
When slow the dropping to after contacting with described workpiece of described upper dish 101, described the second magnetic valve 142, described the 3rd magnetic valve 143, described the 4th magnetic valve 154 and described the 5th magnetic valve 155 are switched on, the cavity of resorption 112 of described master cylinder 110 is communicated with described main gas circuit 120 by described second time loop 140 and described precise pressure regulating valve 190, and therefore described second time loop 140 is to cavity of resorption 112 air feed of described master cylinder 110.Simultaneously, the epicoele 111 of described master cylinder 110 is by described the 4th magnetic valve 154 and described the 5th magnetic valve 155 and after described electric Proportion valve 153, access described main gas circuit 110 with described second time loop 140 by same precise pressure regulating valve 190, described electric-control system can be adjusted described upper dish 101 and be applied to by adjusting the output pressure of described electric Proportion valve 153 grinding pressure of described workpiece.
In specific embodiment, the rod end of described master cylinder 110 can be provided with LOAD CELLS, described LOAD CELLS can above coil 101 pressure described in Real-Time Monitoring, described electric-control system can be adjusted according to preset pressure value the admission pressure of the epicoele 111 of described electric Proportion valve 153 to described cylinder 110, thereby within the grinding pressure that ensures described upper dish 101 maintains accurate control.On the other hand, because said process is closed-loop control, when the weight of described upper dish 101 changes or when gas circuit air pressure sounding changes, described electric Proportion valve 153 can be adjusted in time, thereby ensures the uniformity of process conditions.
Three, safeguard protection
The pneumatic control system 100 that the utility model provides can provide safety air cylinder locking protection, the anti-safety protection functions such as protection and pressure switch wheel leakage protective of dying of guide, below is introduced respectively.
1, safety air cylinder locking protection
Described safety air cylinder 161 can be single-acting spring press out type safety air cylinder, in the time that described the 6th magnetic valve 163 is not switched on, the internal gas pressure of described safety air cylinder 161 can gush by the silencer of described the 6th magnetic valve 163, and, under spring action, described safety air cylinder 161 can keep locking device ejection state, thereby makes described upper dish 101 in locking state.And after described the 6th magnetic valve 163 energisings, the spring of described safety air cylinder 161 is compressed, thereby described locking device is retracted, now described upper dish 101 just can carry out descending operation.
On the other hand, once there is the situation that source of the gas disconnects, described safety air cylinder 161 can promptly eject described locking device and pin described upper dish 101, thereby prevents unexpected generation.In addition, in the situation that there is accident power-off in described pneumatic control system 100, described the 6th magnetic valve 163 power-off, described safety air cylinder 161 also will come above to coil 101 described in auto lock by described locking device, thereby avoid unexpected generation.
2, the anti-protection of dying of guide
Generally, after described main gas circuit 120 provides starting pressure for described pilot circuit, described guiding one-way valve 180 just can be opened, now the outwards exhaust of cavity of resorption 112 of described master cylinder 110.And in the time occurring that blowby gas path or source of the gas disconnect, described pilot circuit is closed, therefore described guiding one-way valve 180 also will be closed, and now the cavity of resorption of described master cylinder 110 cannot decline in exhaust, thereby therefore described upper dish 101 cannot decline and avoids occurring accident.
3, pressure switch wheel leakage protective
The pressure switch 123 of described main gas circuit 120 can set in advance an early warning force value, in the time there is blowby gas path, the air pressure of the pipeline of described main gas circuit 120 will reduce, when air pressure is during lower than described early warning force value, the display screen of described pneumatic control system 100 is by display alarm information and stop all operations, until gas leakage problem is got rid of and air pressure recovers just can to move by recovery system afterwards.
Compared to prior art, the pneumatic control system 100 that the utility model provides can be realized by five magnetic valves, precise pressure regulating valve and an electric Proportion valve " rising soon ", " falling soon ", " slow liter " and " delay and fall " four actions of the upper dish 101 that described master cylinder 110 rod ends are connected, and can realize the digitlization of described upper dish 101 " slow falling " the after-applied pressure on workpiece that puts in place is accurately controlled by adjustment electric Proportion valve, thereby meet twin grinding and the day by day multifarious demand of glossing.On the other hand; described pneumatic control system is also equipped with the protection of multiple gas circuit to realize safeguard protection, thereby avoids falling and causing workpiece or device damage or injure staff's situation when the piston 113 that occurs that power-off, source of the gas disconnect or avoid described upper dish 101 to drag described master cylinder 110 when blowby gas path.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description to do; or be directly or indirectly used in other relevant technical field, within being all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a pneumatic control system, it is characterized in that, comprise master cylinder, main gas circuit, first time loop, second time loop, upper loop and precise pressure regulating valve, wherein, described master cylinder comprises epicoele and cavity of resorption, described first time loop is provided with the first magnetic valve, described second time loop is provided with interconnective the second magnetic valve and the 3rd magnetic valve, described upper loop comprises the electric Proportion valve connecting successively, the 4th magnetic valve and the 5th magnetic valve, wherein, described cavity of resorption is connected to described main gas circuit by described first time loop, and be connected to described precise pressure regulating valve by described second time loop, described epicoele is connected to described precise pressure regulating valve by described upper loop, and described precise pressure regulating valve is further connected to described main gas circuit.
2. pneumatic control system as claimed in claim 1, is characterized in that, described the first magnetic valve, described the second magnetic valve, described the 3rd magnetic valve, described the 4th magnetic valve and described the 5th magnetic valve are through type two-position three way magnetic valve.
3. pneumatic control system as claimed in claim 2, is characterized in that, described the first magnetic valve, described the 3rd magnetic valve and described the 5th magnetic valve are separately installed with plug, and described the second magnetic valve and described the 4th magnetic valve are provided with muffler.
4. pneumatic control system as claimed in claim 1, is characterized in that, described master cylinder also comprises the piston being arranged between described epicoele and described cavity of resorption, and the rod end of described piston is connected with dish.
5. pneumatic control system as claimed in claim 4, is characterized in that, described master cylinder is provided with three magnetic switches, and wherein two magnetic switches are separately positioned on upper limit and the lower limit of described master cylinder, and another magnetic switch be arranged on described master cylinder in spacing; Wherein said upper limit in the fast lifting region that is described upper dish, region between spacing, and the spacing slow lifting region that is described upper dish to the region between described lower limit in described.
6. pneumatic control system as claimed in claim 1, is characterized in that, the cavity of resorption of described master cylinder is connected with guiding one-way valve, and described guiding one-way valve is connected to described main gas circuit by pilot circuit.
7. pneumatic control system as claimed in claim 6, is characterized in that, described first time loop and described second time loop are connected to the cavity of resorption of described master cylinder by described guiding one-way valve.
8. pneumatic control system as claimed in claim 4, is characterized in that, also comprises safety return circuit, and described safety return circuit comprises the 6th magnetic valve and has the safety air cylinder of locking device.
9. pneumatic control system as claimed in claim 8, is characterized in that, described safety air cylinder is single-acting spring press out type safety air cylinder, and described the 6th magnetic valve is similarly through type two-position three way magnetic valve, and it is provided with muffler.
10. pneumatic control system as claimed in claim 1, is characterized in that, described main gas circuit is provided with pressure switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459358.6U CN203993501U (en) | 2014-08-14 | 2014-08-14 | Pneumatic control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459358.6U CN203993501U (en) | 2014-08-14 | 2014-08-14 | Pneumatic control system |
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| Publication Number | Publication Date |
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| CN203993501U true CN203993501U (en) | 2014-12-10 |
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| CN201420459358.6U Active CN203993501U (en) | 2014-08-14 | 2014-08-14 | Pneumatic control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458857A (en) * | 2015-12-30 | 2016-04-06 | 浙江万丰科技开发股份有限公司 | Constant force compensation device |
| CN107738123A (en) * | 2017-11-10 | 2018-02-27 | 东风设备制造有限公司 | A kind of automobile engine bearings seat fixture that can be realized gas circuit and share gentle checking functions |
| CN112145488A (en) * | 2020-10-16 | 2020-12-29 | 芜湖森永机器有限公司 | High-precision gas-liquid linkage driving system of double-sided machine |
-
2014
- 2014-08-14 CN CN201420459358.6U patent/CN203993501U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458857A (en) * | 2015-12-30 | 2016-04-06 | 浙江万丰科技开发股份有限公司 | Constant force compensation device |
| CN107738123A (en) * | 2017-11-10 | 2018-02-27 | 东风设备制造有限公司 | A kind of automobile engine bearings seat fixture that can be realized gas circuit and share gentle checking functions |
| CN107738123B (en) * | 2017-11-10 | 2023-10-24 | 东风设备制造有限公司 | Automobile engine bearing seat clamp capable of realizing gas circuit sharing and gas detection functions |
| CN112145488A (en) * | 2020-10-16 | 2020-12-29 | 芜湖森永机器有限公司 | High-precision gas-liquid linkage driving system of double-sided machine |
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