CN209414304U - Hydraulic press master cylinder - Google Patents
Hydraulic press master cylinder Download PDFInfo
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- CN209414304U CN209414304U CN201920039873.1U CN201920039873U CN209414304U CN 209414304 U CN209414304 U CN 209414304U CN 201920039873 U CN201920039873 U CN 201920039873U CN 209414304 U CN209414304 U CN 209414304U
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- oilhole
- oil
- cylinder
- piston
- oil pocket
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Abstract
The utility model discloses hydraulic press master cylinders, it is characterized by comprising upper lower cylinder bodies, inner cylinder liner is fixed in upper cylinder body, A oil pocket is formed between the inner hole of upper cylinder body and the outer circle of inner cylinder liner, B oil pocket is formed between the inner hole of lower cylinder body and the outer circle of thrust bush above piston, forms C oil pocket between the inner hole of lower cylinder body and the outer circle of piston rod below piston；It is fixed with upper valve sleeve at the top of inner cylinder liner, upper valve core is movably equipped in upper valve sleeve, lower valve sleeve is fixed at the top of piston, bottom spool is movably equipped in lower valve sleeve, oil cylinder oil inlet mouth is located at B oil pocket, and oil cylinder oil inlet mouth is connected with the oil pump that servo motor drives.The utility model can realize it is fast under, fast lower buffering, work into, pressure maintaining, return to, the movement such as returning buffering, be not required to setting external electromagnetic valve specially to be controlled, have the advantages that easy for installation, connecting pipe valve is few, substantially reduce oil leak possibility.
Description
Technical field
The utility model relates to a kind of hydraulic presses, and in particular to a kind of hydraulic press master cylinder.
Background technique
Hydraulic press is widely used in the workplaces such as punching press, stretching, and hydraulic press generally uses master cylinder to push away upper mold
It is dynamic, usually to realize it is fast under, fast lower buffering, work into, pressure maintaining, return to, movement, these movements such as returning buffering need to be arranged external
Solenoid valve carry out the disengaging oil to master cylinder and carry out special control, or even need to be arranged auxiliary cylinder, installation is inconvenient, connection
Oil pipe is more, valve is more, therefore the probability of oil leak increases, and oil leak unavoidably occurs, runs oily phenomenon.
Summary of the invention
In view of the deficiencies in the prior art, the technical problems to be solved in the utility model is to be to provide a kind of can be achieved fastly
Under, fast lower buffering, work into, pressure maintaining, return to, the movement such as returning buffering, be not required to setting external electromagnetic valve specially to be controlled, have
There is easy for installation, connecting pipe valve to lack advantage, substantially reduces the hydraulic press master cylinder of oil leak possibility.
The utility model adopts the following technical scheme that complete:
Hydraulic press master cylinder, it is characterised in that: including upper lower cylinder body, inner cylinder liner is fixed in upper cylinder body, upper cylinder body
A oil pocket is formed between inner hole and the outer circle of inner cylinder liner, thrust bush is movably equipped in A oil pocket, and the lower end of thrust bush is fixed to be connected
It takes over a job plug, piston is movably arranged in lower cylinder body, forms B oil between the inner hole of lower cylinder body and the outer circle of thrust bush above piston
The lower end of chamber, piston connects piston rod, forms C oil pocket, C oil between the inner hole of lower cylinder body and the outer circle of piston rod below piston
The cross-sectional area that the cross-sectional area of chamber is greater than B oil pocket is less than the cross-sectional area sum of B oil pocket and A oil pocket；The top of inner cylinder liner is solid
Surely it is equipped with upper valve sleeve, upper valve core is movably equipped in upper valve sleeve, lower valve sleeve is fixed at the top of piston, is movably equipped in lower valve sleeve
Bottom spool；The side wall of upper valve sleeve is equipped with the first oilhole arranged up and down and the second oilhole, and the side wall of inner cylinder liner is equipped with third oilhole,
The exterior side port of first oilhole is communicated with B oil pocket, and the exterior side port of the second oilhole is communicated by third oilhole with A oil pocket, upper valve
The outer circle of core is equipped with upper annular groove, and when upper valve core is at bottom, the interior side port of the first oilhole passes through upper annular groove and the second oilhole
Interior side port communicates；The jacket wall of upper valve core is equipped with the 4th oilhole, and the interior side port of the 4th oilhole is communicated with oil cylinder oil return opening, when upper
When upper, the exterior side port of the 4th oilhole communicates spool with the interior side port of the second oilhole；The side wall of lower valve sleeve is equipped with up and down
The side wall of the 5th oilhole and the 6th oilhole of arrangement, piston is equipped with the 7th oilhole and the 8th oilhole, the exterior side port of the 5th oilhole
It is communicated by the 7th oilhole with B oil pocket, the exterior side port of the 6th oilhole is communicated by the 8th oilhole with C oil pocket, outside bottom spool
Circle is equipped with lower annular groove, when the inner end that bottom spool is at bottom, and the interior side port of the 5th oilhole passes through lower annular groove and the 6th oilhole
Mouth communicates；The side wall of bottom spool is equipped with the 9th oilhole, and the interior side port of the 9th oilhole is communicated with oil cylinder oil return opening, when bottom spool exists
When upper, the exterior side port of the 9th oilhole is communicated with the interior side port of the 6th oilhole；Oil cylinder oil inlet mouth is located at B oil pocket, oil cylinder into
Hydraulic fluid port is connected with the oil pump that servo motor drives.
Hydraulic press master cylinder by adopting the above technical scheme cooperates inner casing by the setting of A, B, C oil pocket of cylinder interior
Then the setting of set, thrust bush, upper lower valve sleeve and upper bottom spool is converted by the position of upper bottom spool, is aided with servo motor
Revolving speed control, can easily realize it is fast under, fast lower buffering, work into, pressure maintaining, return to, the movement such as returning buffering, be not required in addition set
External solenoid valve is set specially to be controlled, thus install it is very convenient, and do not need substantially additional connecting pipe and
Valve, to substantially reduce oil leak possibility.
Preferably, being fixed with upper valve core position detection magnet ring in upper valve core, bottom spool position is fixed in bottom spool
Detection magnet ring is set, oil cylinder displacement detecting magnet ring is movably equipped in inner cylinder liner, oil cylinder displacement detecting magnet ring passes through coupling sleeve and piston
It is fixedly linked, the induction rod of displacement sensor is passed through from the intermediate active of above-mentioned magnet ring, and displacement sensor is fixedly mounted.By upper
Design is stated, when master cylinder works, displacement sensor can detect the displacement of oil cylinder by magnet ring and check logical inside oil cylinder
Oil stream is to and reading data.
Preferably, the downward actuation of upper valve core, by pneumatic control, upper valve core pushes the upper of air inlet alignment upper valve core
End face is pushed after upper valve core downward actuation by upper spring and is resetted；By pneumatic control, bottom spool moves upwards for the upward movement of bottom spool
It is pushed and is resetted by lower spring after work.Above-mentioned design can make the control structure of bottom spool simple, and Reliability of Microprocessor is strong.
Preferably, the bottom end face for pushing air inlet alignment bottom spool of bottom spool, is outputed in the centre of piston rod.
Preferably, the exterior side port of the first oilhole is communicated by external oil pipe with B oil pocket.
Preferably, oil cylinder oil return opening is located at the top of oil cylinder.
Detailed description of the invention
The utility model has following attached drawing:
Fig. 1 is the structural schematic diagram of the utility model,
Fig. 2 is the partial enlarged view (upper and lower spool is in bottom) of Fig. 1,
Fig. 3 is the enlarged drawing on the top Fig. 2,
Fig. 4 is the enlarged drawing of the lower part Fig. 2,
Fig. 5 is structure chart of bottom spool when upper in Fig. 2,
Fig. 6 is structure chart of upper valve core when upper in Fig. 2.
Specific embodiment
As shown, the hydraulic press master cylinder of the utility model, including the upper cylinder body 1 and lower cylinder body 2 being fixedly connected, upper cylinder half
It is fixed with inner cylinder liner 3 in body 1, forms A oil pocket between the inner hole of upper cylinder body 1 and the outer circle of inner cylinder liner 3, activity is set in A oil pocket
There is thrust bush 6, the lower end of thrust bush 6 is fixedly connected with piston 7, and piston 7 is movably arranged in lower cylinder body 2, the inner hole of lower cylinder body 2
Form B oil pocket above piston 7 between the outer circle of thrust bush 6, the lower end of piston 7 connects piston rod 12, lower cylinder body 2 it is interior
C oil pocket is formed between hole and the outer circle of piston rod 12 below piston 7, the cross-sectional area of C oil pocket is greater than the cross-sectional area of B oil pocket
Less than the cross-sectional area sum of B oil pocket and A oil pocket；The top of inner cylinder liner 3 is fixed with upper valve sleeve 4, is movably equipped in upper valve sleeve 4
Upper valve core 5, the downward actuation of upper valve core 5 is by pneumatic control, the upper surface for pushing air inlet alignment upper valve core of upper valve core, upper valve
It is pushed and is resetted by upper spring 19 after 5 downward actuation of core, the top of piston 7 is fixed with lower valve sleeve 8, and lower valve sleeve 8 is located at thrust sleeve
The inner hole of cylinder 6 is isolated with B oil pocket, and bottom spool 9 is movably equipped in lower valve sleeve 8, and the upward of bottom spool 9 acts by pneumatic control, under
Spool 9 pushes air inlet 24 to be directed at the bottom end face of bottom spool 9, outputs in the centre of piston rod 12, and bottom spool 9 acts upwards
It is pushed and is resetted by lower spring 22 afterwards.It is fixed with upper valve core position detection magnet ring 17 in upper valve core 5, is fixed in bottom spool 9
Bottom spool position detection magnet ring 23, oil cylinder displacement detecting magnet ring 20 is movably equipped in inner cylinder liner 3, and oil cylinder displacement detecting magnet ring 20 is logical
It crosses coupling sleeve 21 to be fixedly linked with piston 7, the induction rod 18 of displacement sensor 11 is passed through from the intermediate active of above-mentioned magnet ring, displacement
Sensor 11 is fixedly mounted at the top of upper cylinder body 1.
The side wall of upper valve sleeve 4 is equipped with the first oilhole 41 arranged up and down and the second oilhole 42, and the side wall of inner cylinder liner 3 is equipped with the
The exterior side port of three oilholes 31, the first oilhole 41 is communicated by external oil pipe 10 with B oil pocket, and the exterior side port of the second oilhole 42 is logical
Third oilhole 31 to be crossed to communicate with A oil pocket, the outer circle of upper valve core 5 is equipped with upper annular groove 51, when upper valve core 5 is at bottom, the first oilhole
41 interior side port is communicated by upper annular groove 51 with the interior side port of the second oilhole 42；The jacket wall of upper valve core 5 is equipped with the 4th oilhole
52, the interior side port of the 4th oilhole 52 is communicated with oil cylinder oil return opening 15, when upper valve core 5 is when upper, the outside of the 4th oilhole 52
Port is communicated with the interior side port of the second oilhole 42；The side wall of lower valve sleeve 8 is equipped with the 5th oilhole 81 and the 6th oil arranged up and down
Hole 82, the side wall of piston 7 are equipped with the 7th oilhole 71 and the 8th oilhole 72, and the 8th oilhole 72 is inclined hole, the outside of the 5th oilhole 81
Port is communicated by the 7th oilhole 71 with B oil pocket, and the exterior side port of the 6th oilhole 82 is communicated by the 8th oilhole 72 with C oil pocket,
The outer circle of bottom spool 9 is equipped with lower annular groove 91, and when bottom spool 9 is at bottom, the interior side port of the 5th oilhole 81 passes through lower annular groove 91
It is communicated with the interior side port of the 6th oilhole 82；The side wall of bottom spool 9 be equipped with the 9th oilhole 92, the interior side port of the 9th oilhole 92 with
Oil cylinder oil return opening 15 communicates, when bottom spool 9 is when upper, the exterior side port of the 9th oilhole 92 and the interior side port of the 6th oilhole 82
It communicates；Oil cylinder oil inlet mouth 16 is located at B oil pocket, and oil cylinder oil inlet mouth 16 is connected with the oil pump 13 that servo motor 14 drives, oil cylinder oil return
Mouth 15 is located at the top of oil cylinder.
The utility model is performed such work: shown in Fig. 1-4, upper bottom spool all in bottom, at this time oil cylinder Road into
Oil is directly entered B oil pocket, pushes piston 7 downward；On oil cylinder road oil inlet by B oil pocket, external oil pipe 10, the first oilhole 41, on
Annular groove 51, the second oilhole 42, third oilhole 31 enter A oil pocket (dotted line show oil circuit trend in Fig. 3), push thrust bush 6
Downwards, the downward force of thrust bush 6 acts on piston 7；Road oil inlet passes through B oil pocket, the 7th oilhole 71, the 5th oilhole under oil cylinder
81, lower annular groove 91, the 6th oilhole 82, the 8th oilhole 72 enter C oil pocket (dotted line show oil circuit trend in Fig. 4), push piston 7
Upwards；Since the cross-sectional area that the cross-sectional area of C oil pocket is greater than B oil pocket is less than the cross-sectional area sum of B oil pocket and A oil pocket, institute
It is downward with the resultant force acted on piston 7, the fast lower movement of oil cylinder can be realized at this time.Shown in Fig. 5, upper valve core is in bottom, lower valve
For core upper, oil cylinder Road oil inlet at this time is directly entered B oil pocket, pushes piston downward；Road oil inlet passes through B oil pocket, outer on oil cylinder
It sets oil pipe, the first oilhole, upper annular groove, the second oilhole, third oilhole and enters A oil pocket, push thrust bush downward, thrust bush
Power acts on piston；Road oil inlet cannot communicate the 6th oilhole due to the 5th oilhole by lower annular groove under oil cylinder, C oil pocket not oil inlet,
So acting on piston stress when movement under the downward resultant force on piston is significantly larger than fastly, the work precession of oil cylinder can be realized at this time
Make, at this moment the oil of C oil pocket returns to fuel tank by the 8th oilhole, the 9th oilhole, oil cylinder oil return opening.Shown in Fig. 6, upper valve core is upper
Position, for bottom spool in bottom, oil cylinder Road oil inlet at this time is directly entered B oil pocket, pushes piston downward；Road oil inlet is due on oil cylinder
One oilhole cannot communicate the second oilhole, A oil pocket not oil inlet by upper annular groove, so thrust bush does not generate effect downwards to piston
Power；Road oil inlet enters C oil pocket by B oil pocket, the 7th oilhole, the 5th oilhole, lower annular groove, the 6th oilhole, the 8th oilhole under oil cylinder,
Push piston upward；Since the cross-sectional area of C oil pocket is greater than the cross-sectional area of B oil pocket, thus act on resultant force on piston to
On, can realize oil cylinder at this time returns to movement, and at this moment the oil of A oil pocket passes through third oilhole, the second oilhole, the 4th oilhole, oil cylinder
Oil return opening returns to fuel tank.During above-mentioned oil cylinder descends fastly, reduced by the revolving speed of servo motor, it can be achieved that oil cylinder it is fast under
Action of giving.When arrival certain position is made in above-mentioned work precession, oil pump fuel cut-off is, it can be achieved that the pressure maintaining of oil cylinder acts.Oil cylinder
Returning buffering realized also by the revolving speed of control servo motor.
Claims (6)
1. hydraulic press master cylinder, it is characterised in that: including upper lower cylinder body, be fixed with inner cylinder liner in upper cylinder body, upper cylinder body it is interior
A oil pocket is formed between hole and the outer circle of inner cylinder liner, is movably equipped with thrust bush in A oil pocket, the lower end of thrust bush is fixedly connected
Piston, piston are movably arranged in lower cylinder body, form B oil between the inner hole of lower cylinder body and the outer circle of thrust bush above piston
The lower end of chamber, piston connects piston rod, forms C oil pocket, C oil between the inner hole of lower cylinder body and the outer circle of piston rod below piston
The cross-sectional area that the cross-sectional area of chamber is greater than B oil pocket is less than the cross-sectional area sum of B oil pocket and A oil pocket；The top of inner cylinder liner is solid
Surely it is equipped with upper valve sleeve, upper valve core is movably equipped in upper valve sleeve, lower valve sleeve is fixed at the top of piston, is movably equipped in lower valve sleeve
Bottom spool；The side wall of upper valve sleeve is equipped with the first oilhole arranged up and down and the second oilhole, and the side wall of inner cylinder liner is equipped with third oilhole,
The exterior side port of first oilhole is communicated with B oil pocket, and the exterior side port of the second oilhole is communicated by third oilhole with A oil pocket, upper valve
The outer circle of core is equipped with upper annular groove, and when upper valve core is at bottom, the interior side port of the first oilhole passes through upper annular groove and the second oilhole
Interior side port communicates；The jacket wall of upper valve core is equipped with the 4th oilhole, and the interior side port of the 4th oilhole is communicated with oil cylinder oil return opening, when upper
When upper, the exterior side port of the 4th oilhole communicates spool with the interior side port of the second oilhole；The side wall of lower valve sleeve is equipped with up and down
The side wall of the 5th oilhole and the 6th oilhole of arrangement, piston is equipped with the 7th oilhole and the 8th oilhole, the exterior side port of the 5th oilhole
It is communicated by the 7th oilhole with B oil pocket, the exterior side port of the 6th oilhole is communicated by the 8th oilhole with C oil pocket, outside bottom spool
Circle is equipped with lower annular groove, when the inner end that bottom spool is at bottom, and the interior side port of the 5th oilhole passes through lower annular groove and the 6th oilhole
Mouth communicates；The side wall of bottom spool is equipped with the 9th oilhole, and the interior side port of the 9th oilhole is communicated with oil cylinder oil return opening, when bottom spool exists
When upper, the exterior side port of the 9th oilhole is communicated with the interior side port of the 6th oilhole；Oil cylinder oil inlet mouth is located at B oil pocket, oil cylinder into
Hydraulic fluid port is connected with the oil pump that servo motor drives.
2. hydraulic press master cylinder as described in claim 1, it is characterised in that: be fixed with upper valve core position detection in upper valve core
Magnet ring is fixed with bottom spool position detection magnet ring in bottom spool, oil cylinder displacement detecting magnet ring, oil cylinder is movably equipped in inner cylinder liner
Displacement detecting magnet ring is fixedly linked by coupling sleeve and piston, and the induction rod of displacement sensor is worn from the intermediate active of above-mentioned magnet ring
It crosses, displacement sensor is fixedly mounted.
3. hydraulic press master cylinder as described in claim 1, it is characterised in that: the downward actuation of upper valve core by pneumatic control, on
The promotion air inlet of spool is directed at the upper surface of upper valve core, is pushed and is resetted by upper spring after upper valve core downward actuation；Bottom spool
By pneumatic control, bottom spool, which is pushed after acting upwards by lower spring, to be resetted for movement upwards.
4. hydraulic press master cylinder as claimed in claim 3, it is characterised in that: bottom spool pushes air inlet to be directed at bottom spool
Bottom end face is outputed in the centre of piston rod.
5. hydraulic press master cylinder as described in claim 1, it is characterised in that: the exterior side port of the first oilhole passes through external oil pipe
It is communicated with B oil pocket.
6. hydraulic press master cylinder as described in claim 1, it is characterised in that: oil cylinder oil return opening is located at the top of oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920039873.1U CN209414304U (en) | 2019-01-10 | 2019-01-10 | Hydraulic press master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920039873.1U CN209414304U (en) | 2019-01-10 | 2019-01-10 | Hydraulic press master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209414304U true CN209414304U (en) | 2019-09-20 |
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ID=67943192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920039873.1U Active CN209414304U (en) | 2019-01-10 | 2019-01-10 | Hydraulic press master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209414304U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555750A (en) * | 2019-01-10 | 2019-04-02 | 浙江鹤立智能机械有限公司 | Hydraulic press master cylinder |
-
2019
- 2019-01-10 CN CN201920039873.1U patent/CN209414304U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555750A (en) * | 2019-01-10 | 2019-04-02 | 浙江鹤立智能机械有限公司 | Hydraulic press master cylinder |
| CN109555750B (en) * | 2019-01-10 | 2024-02-27 | 浙江鹤立智能机械有限公司 | Main oil cylinder of hydraulic press |
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