CN201755914U - Novel oil press - Google Patents
Novel oil press Download PDFInfo
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- CN201755914U CN201755914U CN2010202784167U CN201020278416U CN201755914U CN 201755914 U CN201755914 U CN 201755914U CN 2010202784167 U CN2010202784167 U CN 2010202784167U CN 201020278416 U CN201020278416 U CN 201020278416U CN 201755914 U CN201755914 U CN 201755914U
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Abstract
A novel oil press comprises a motor, an oil pump, a liquid charging valve, a sequence valve, a reversing valve, a remote pressure regulating valve, a pilot operated check valve, an overflow valve, a working cylinder, an oil tank and a pressure gage. The novel oil press is characterized in that the working cylinder is a single-action piston type cylinder and provided with a cavity A, a cavity B and a cavity C, a small piston rod is further arranged in a piston rod of the working cylinder and fixed on a base of the working cylinder, and the small piston rod and the inner circle of the piston rod form a small plunger cylinder. Compared with the prior art, the novel oil press has the advantages of simplified structure, excellent performance, high working efficiency and strong economical practicability.
Description
Technical field
The utility model relates to a kind of novel hydraulic press, particularly a kind of novel hydraulic press that adopts particular job oil cylinder.
Background technology
Hydraulic press is a kind of pressing process that is applicable to plastic material, as punching press, bending, alignment, manufacturing process such as press-fit.Existing hydraulic press mainly is made up of main frame and actuating unit two large divisions.The hydraulic press host machine part comprises fuselage, master cylinder and charging device etc.Actuating unit is made up of fuel tank, high-pressure pump, low voltage control system, motor and various pressure valve and direction valve etc.Actuating unit under the control of electric device, control pump and oil cylinder and various hydraulic valve.And hydraulic press is in when work, and it is reasonable to require that speed is low and steady, idle stroke advance and retreat speed is fast, the speed rate conversion is steady, system effectiveness is high, power utilization is lacked in heating.Then its operating principle is: F.F., and---worker advances, and---pressurize---rewind down---stops.And the prior oil pressure machine to the control mode that conversion and F.F., the worker of fast jogging speed advances these two actions mainly is: volume throttle grverning and servo control.Former structure is simple, but adjusting function is not good, and efficient is low and power loss is big; Latter's adjusting function is good, but the structure relative complex, and the cost height, safeguard inconvenient.
Summary of the invention
Technical problem to be solved in the utility model is: solve the problem that above-mentioned prior art exists, and provide that a kind of designs simplification, serviceability are good, high efficiency, novel hydraulic press that economic and practical is strong.
The technical solution adopted in the utility model is: this novel hydraulic press, comprise motor, oil pump, prefill valve, sequence valve, reversal valve, remote pressure regulating valve, hydraulic control one-way valve, overflow valve, operating cylinder and fuel tank, Pressure gauge, feature of the present utility model is: operating cylinder is the single-acting piston type oil cylinder, total A1, A2, three chambeies of A3, also has a small piston rod in the piston rod of operating cylinder, small piston rod is fixed on the base of operating cylinder, interior round-formed pillar plug cylinder of it and piston rod.
In the technique scheme, oil pump by reversal valve to the operating cylinder fuel feeding, wherein, the A1 chamber in-line of operating cylinder links to each other with reversal valve by hydraulic control one-way valve, and be connected with first overflow valve, behind the in-line series sequence valve of operating cylinder A2 chamber, in parallel with A3 chamber in-line, be connected with reversal valve by S type check valve again after the parallel connection.
In the technique scheme, operating cylinder A2 chamber also links to each other with auxiliary fuel tank by prefill valve.
In the technique scheme, reversal valve adopts H type meta function reversal valve.
When hydraulic press of the present utility model was worked, fluid at first entered the A3 chamber of operating cylinder, and A3 chamber sectional area is little, made operating cylinder big piston bar do the motion of at a high speed low active force.When big piston bar contact workpiece bore load, the A3 cavity pressure increased, and sequence valve is opened, and fluid enters the motion that the A2 chamber begins to do low speed, big active force, realizes the conversion of fast jogging speed.When machining when needing pressurize, hydraulic pump stops to A1, A2 chamber fuel feeding, and this moment, auxiliary fuel tank to A2 chamber fuel feeding, replenished the pressure loss in A2 chamber by prefill valve.After whole machining, the oil-feed of A1 chamber, the big piston bar is upwards return fast.
This novel hydraulic press that the utility model provides, no speed control loop and servo control system.Just in the piston rod of operating cylinder, additionally increased by a small piston rod, interior round-formed pillar plug cylinder of it and big piston bar, and small piston rod is fixed on the cylinder bottom.When machine works, because the effect of sequence valve, fluid flows into the A3 chamber earlier and realizes the F.F. action; When the piston rod contact workpiece had load, the A3 cavity pressure increased, and sequence valve is opened, and fluid then carries out the A2 chamber through sequence valve, realized worker's precession work; Because the system reversal valve adopts " H " type meta function, operating cylinder becomes quick condition, can pin at an arbitrary position, and the A2 chamber is connected with auxiliary fuel tank by prefill valve, has just finished promptly to stop pressurize and move; When the needs rewind down, get final product from the oil-feed of A3 chamber.Therefore, this novel oil pressure will not only structurally have been oversimplified the prior oil pressure machine, and better than existing hydraulic press on serviceability.When really having realized hydraulic press work, speed is low and steady, and idle stroke advance and retreat speed is fast, and the speed rate conversion is steady, the system effectiveness height, and heating is few, and power utilization is reasonable.
Description of drawings:
Fig. 1 is the utility model hydraulic schematic diagram;
Fig. 2 is the utility model operating cylinder structural representation;
Fig. 3 is the utility model profile assembling front view;
Fig. 4 is the side view of Fig. 3;
Fig. 5 is the vertical view of Fig. 3;
Fig. 6 is a prior art hydraulic press hydraulic schematic diagram.
The accompanying drawing marking explanation:
1---motor 2---oil pump 3---reversal valve
4---hydraulic control one-way valve 5---S type check valve 6---sequence valves
7---operating cylinder 8---A1 chamber 9---A2 chambeies
10---A3 chamber 11---cylinder pedestal 12---small piston rods
13---piston rod 14---prefill valve 15---first overflow valves
16---second overflow valve 17---remote pressure regulating valve 18---main fuel tanks
19---auxiliary fuel tank 20---Pressure gauge 21---frames
22---small piston rod hold-down nut 23---oil cylinder hold-down screw 24---valve groups
25---panel 26---table top 27---table top hold-down screws
28---motor hold-down screw 29---support.
The specific embodiment:
Referring to Fig. 1, Fig. 2, novel hydraulic press of the present utility model, comprise motor 1, oil pump 2, prefill valve 14, sequence valve 6, reversal valve 3, remote pressure regulating valve 17, hydraulic control one-way valve 4, S type check valve 5, operating cylinder 7, first overflow valve 15, second overflow valve 16 and main fuel tank 18, auxiliary fuel tank 19, Pressure gauge 20, operating cylinder 7 is for being the single-acting piston type oil cylinder, total A1, A2, three chambeies of A3, also has a small piston rod 12 in the piston rod 13 of operating cylinder, small piston rod 12 is fixed on the base 11 of operating cylinder, interior round-formed pillar plug cylinder of it and piston rod 13.Oil pump 2 passes through reversal valve 3 to operating cylinder 7 fuel feeding, wherein, the A1 chamber in-line of operating cylinder links to each other with reversal valve 3 by hydraulic control one-way valve 4, A1 chamber in-line also is connected with first overflow valve 15, behind the A2 chamber in-line series sequence valve 6 of operating cylinder, in parallel with A3 chamber in-line, be connected with reversal valve 3 by S type check valve 5 again after the parallel connection.Operating cylinder A2 chamber also links to each other with auxiliary fuel tank 19 by prefill valve 14.Reversal valve 3 adopts H type meta function reversal valve.
As can be seen from Figure 1, when hydraulic press starts, realize F.F. action, this moment, in-line was: hydraulic pump, and---reversal valve---S type check valve---A3 chamber, because the sectional area in A3 chamber is little, then operating cylinder just can be realized low thrust, high-speed action.Behind operating cylinder piston rod contact workpiece, piston rod is subjected to load, and the A3 cavity pressure increases, the Direct Action Type sequence valve is opened, in-line fluid then enters the A2 chamber through the Direct Action Type sequence valve, because A2 chamber sectional area is big, then operating cylinder is realized the action of high thrust, low velocity.The auxiliary fuel tank of oil cylinder upper end can carry out repairing to the A2 chamber by prefill valve, replenishes the pressure loss in A2 chamber, improves the effect of oil cylinder pressurize.After processing action was finished, in-line was: hydraulic pump, and---reversal valve---hydraulic control one-way valve---A1 chamber, the fluid in A2 chamber flows into auxiliary fuel tank by prefill valve, realizes the rewind down action.
As can be seen from Figure 2, this single action piston cylinder is different with conventional piston cylinder, also has a small piston rod in the piston rod of this oil cylinder, and an end of small piston rod is fixed on the oil cylinder cylinder bottom, an interior round-formed pillar plug cylinder of this small piston rod and big piston bar.Little many in sectional area ratio A2 chamber, A3 chamber, when fluid entered the A3 chamber, the big piston bar was done the motion of high speed low thrust downwards; When fluid entered the A2 chamber, the big piston bar was done the low-speed high-thrust motion downwards; When fluid entered the A1 chamber, the big piston bar was upwards made high-speed motion.
Claims (4)
1. a novel hydraulic press comprises motor, oil pump, prefill valve, sequence valve, reversal valve, remote pressure regulating valve, hydraulic control one-way valve, overflow valve, operating cylinder and fuel tank, Pressure gauge; It is characterized in that: operating cylinder is the single-acting piston type oil cylinder, total A1, A2, three chambeies of A3, also have a small piston rod in the piston rod of operating cylinder, small piston rod is fixed on the base of operating cylinder, interior round-formed pillar plug cylinder of it and piston rod.
2. novel hydraulic press according to claim 1, it is characterized in that: oil pump by reversal valve to the operating cylinder fuel feeding, wherein, the A1 chamber in-line of operating cylinder links to each other with reversal valve by hydraulic control one-way valve, and be connected with first overflow valve, behind the in-line series sequence valve of operating cylinder A2 chamber, in parallel with A3 chamber in-line, be connected with reversal valve by S type check valve again after the parallel connection.
3. novel hydraulic press according to claim 1 is characterized in that operating cylinder A2 chamber also links to each other with auxiliary fuel tank by prefill valve.
4. novel hydraulic press according to claim 1 is characterized in that reversal valve adopts H type meta function reversal valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202784167U CN201755914U (en) | 2010-08-02 | 2010-08-02 | Novel oil press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202784167U CN201755914U (en) | 2010-08-02 | 2010-08-02 | Novel oil press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201755914U true CN201755914U (en) | 2011-03-09 |
Family
ID=43643180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202784167U Expired - Fee Related CN201755914U (en) | 2010-08-02 | 2010-08-02 | Novel oil press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201755914U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179950A (en) * | 2010-08-02 | 2011-09-14 | 湖南协力液压有限公司 | Novel oil press |
-
2010
- 2010-08-02 CN CN2010202784167U patent/CN201755914U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179950A (en) * | 2010-08-02 | 2011-09-14 | 湖南协力液压有限公司 | Novel oil press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20150802 |
|
| EXPY | Termination of patent right or utility model |