CN203685731U - Hydraulic system for pressure forming machine - Google Patents
Hydraulic system for pressure forming machine Download PDFInfo
- Publication number
- CN203685731U CN203685731U CN201420031568.5U CN201420031568U CN203685731U CN 203685731 U CN203685731 U CN 203685731U CN 201420031568 U CN201420031568 U CN 201420031568U CN 203685731 U CN203685731 U CN 203685731U
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- Prior art keywords
- hydraulic
- oil
- hydraulic pump
- directional control
- control valve
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- Expired - Lifetime
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- 239000003921 oil Substances 0.000 claims abstract description 74
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 54
- 230000006837 decompression Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
A hydraulic system for a pressure forming machine comprises a hydraulic oil tank, a hydraulic pump communicated with the hydraulic oil tank, a drive motor connected with the hydraulic pump, and a hydraulic cylinder. The hydraulic cylinder comprises a moving die moving and driving hydraulic cylinder and a mold-closing pressurization hydraulic cylinder. The drive motor is a servo drive motor. The hydraulic pump comprises a low-pressure large-flow hydraulic pump and a high-pressure small-flow hydraulic pump. A die-closing loop, a pressurization loop, a mold-manufacturing loop and an oil filling access are arranged between the hydraulic pump and the hydraulic cylinder. According to the hydraulic system, the servo drive motor drives the double pumps of the large flow and the small flow, the large hydraulic cylinder and small hydraulic cylinder system and the oil filling technology are adopted in the mold-closing hydraulic cylinder, the production efficiency is guaranteed, the energy consumption is low, heating of hydraulic oil is reduced, and the service life of equipment is prolonged.
Description
Technical field
The utility model relates to pressure forming machine, refers in particular to a kind of hydraulic system of pressure forming machine.
Background technique
The hydraulic system of existing pressure forming machine, generally all as Fig. 1, is mainly made up of hydraulic oil container, oil hydraulic pump, drive motor, pressure flow Proportional valve, solenoid directional control valve and closing liquid cylinder pressure.Its work characteristics is: drive motor drives oil hydraulic pump that hydraulic oil is got, and regulates fuel-displaced flow and pressure by pressure flow Proportional valve, and position by solenoid directional control valve switches, control before closing liquid cylinder pressure push away, pressurization and pumpback.
The shortcoming of this hydraulic system mainly contains:
1, due to the moulding pressure for after guarantee matched moulds, closing liquid cylinder pressure cylinder diameter is generally all larger, in order to ensure manufacturing efficiency, before gesture necessary guarantee closing liquid cylinder pressure, push away and retraction speed, the larger model of oil hydraulic pump model gesture necessary choice, this just requires drive motor will have relatively high power, so energy consumption is large, is unfavorable for energy-conservation;
2, drive oil hydraulic pump with common drive motor, the flow of getting hydraulic oil is changeless, in matched moulds pressure process, the pressure regulation throttle orifice that most hydraulic oil certainly will all pass through pressure & flow proportion valve squeezes back hydraulic station, a large amount of transformation of energy is the heat of hydraulic oil, hydraulic oil heating is serious, has a strong impact on hydraulic seal and other are compared with the working life of precision components;
3, common drive motor running noise is large, not environmental protection, operator's poor working environment.
Model utility content
The utility model has solved above-mentioned technical problem, and a kind of hydraulic system of pressure forming machine is provided.
In order to solve the problems of the technologies described above; the technical solution of the utility model is: a kind of hydraulic system of pressure forming machine; the oil hydraulic pump that comprises hydraulic oil container, be connected with hydraulic oil container, drive motor and the oil hydraulic cylinder being connected with oil hydraulic pump; described oil hydraulic cylinder comprises that dynamic model moves driving oil hydraulic cylinder and matched moulds press cylinder; described oil hydraulic pump comprises low pressure and mass flow oil hydraulic pump and high-pressure low-flow oil hydraulic pump, comprises matched moulds loop, adds hydraulic circuit, die sinking loop and full oily path between described oil hydraulic pump and oil hydraulic cylinder.
Further, described matched moulds loop, add hydraulic circuit and die sinking loop forms loop by the first solenoid directional control valve, the second solenoid directional control valve and solenoid valve, described matched moulds loop and die sinking loop adopt same loop, and full oily path comprises Full Tanks and prefill valve.
Further; hydraulic oil is got in described matched moulds loop and die sinking loop from hydraulic oil container by oil hydraulic pump; the hydraulic oil of getting also enters the second solenoid directional control valve stream from low pressure and mass flow oil hydraulic pump by the first solenoid directional control valve and the hydraulic oil from high-pressure low-flow oil hydraulic pump; enter into again dynamic model and move driving oil hydraulic cylinder, finally flow to hydraulic oil container from the second solenoid directional control valve.
Further, the described hydraulic circuit that adds is got hydraulic oil from hydraulic oil container by oil hydraulic pump, the hydraulic oil of getting flows to hydraulic oil container by the first solenoid directional control valve from low pressure and mass flow oil hydraulic pump, enters into matched moulds press cylinder from the hydraulic oil of high-pressure low-flow oil hydraulic pump through solenoid valve.
Further, described adding in hydraulic circuit, also comprises that a Decompression valves, Decompression valves connect two valve ports of the first solenoid directional control valve.
Further, described full oily path is that Full Tanks is communicated with prefill valve, prefill valve connects matched moulds press cylinder, and hydraulic oil enters into matched moulds press cylinder by prefill valve from Full Tanks sucking-off, or hydraulic oil is discharged and pushed back Full Tanks by prefill valve from matched moulds press cylinder.
Further, described drive motor adopts servo drive motor.
Further, the first described solenoid directional control valve adopts bi-bit bi-pass solenoid directional control valve.
Further, the second described solenoid directional control valve adopts 3-position 4-way solenoid directional control valve.
The beneficial effects of the utility model:
1, this patent adopts little cylinder diameter dynamic model to move to drive oil hydraulic cylinder to promote the movement of dynamic model, because cylinder diameter is little, need flow little, and pump size is little, and power of motor is little, and energy consumption is low, and dynamic model travelling speed is fast, and manufacturing efficiency is high;
2, this patent adopts heavy caliber matched moulds press cylinder to pressurize to dynamic model, has ensured larger mold clamping force, and then has ensured the quality of product;
3, this patent adopts the form of duplex metering pump, in the matched moulds pressure period, only use the pressurization of buying oil of high-pressure low-flow oil hydraulic pump, the hydraulic oil that low pressure and mass flow oil hydraulic pump is got passes through solenoid directional control valve, directly return hydraulic oil container, do not need to force to squeeze back hydraulic oil container through the very little throttle orifice of traditional pressure flow Proportional valve, heating value is little, hydraulic oil temperature rise is little, has ensured the working life of hydraulic seal and other components and parts;
4, this patent adopts servo drive motor to drive duplex oil hydraulic pump, and control of flow and pressure is accurate;
5, this patent adopts servo drive motor as power source, and noise is little.
Brief description of the drawings
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is the hydraulic system of pressure forming machine in prior art;
Fig. 2 is the hydraulic system path in matched moulds stage of the present utility model;
Fig. 3 is the hydraulic system path of pressure period of the present utility model;
Fig. 4 is the hydraulic system path in die sinking stage of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
A kind of hydraulic system of pressure forming machine; the oil hydraulic pump that comprises hydraulic oil container 1, be connected with hydraulic oil container 1, drive motor 2 and the oil hydraulic cylinder being connected with oil hydraulic pump; described oil hydraulic cylinder comprises that dynamic model moves driving oil hydraulic cylinder 11 and matched moulds press cylinder 12; described oil hydraulic pump comprises low pressure and mass flow oil hydraulic pump 3 and high-pressure low-flow oil hydraulic pump 4; between described oil hydraulic pump and oil hydraulic cylinder, comprise matched moulds loop, add hydraulic circuit, die sinking loop and full oily path, described drive motor 2 adopts servo drive motor.
The stage of matched moulds shown in Fig. 2, oil hydraulic circuit comprises matched moulds loop and full oily path, the first solenoid directional control valve 6 adopts bi-bit bi-pass solenoid directional control valve, the second solenoid directional control valve 8 adopts 3-position 4-way solenoid directional control valve, drive motor 2 drives low pressure and mass flow oil hydraulic pump 3 and high-pressure low-flow oil hydraulic pump 4 to rotate, from hydraulic oil container 1, get hydraulic oil, the first solenoid directional control valve 6 is switched to the position of " b ", the hydraulic oil that low pressure and mass flow oil hydraulic pump 3 and high-pressure low-flow oil hydraulic pump 4 are got stream, the second solenoid directional control valve 8 is switched to the position of " c ", solenoid valve 7 cuts out, the hydraulic oil of being got by low pressure and mass flow oil hydraulic pump 3 and high-pressure low-flow oil hydraulic pump 4 is injected into dynamic model and moves in the rodless cavity that drives oil hydraulic cylinder 11, dynamic model pushes away before moving the piston rod that drives oil hydraulic cylinder 11, promote the reach of pressure forming machine dynamic model, and then drag its piston reach by matched moulds press cylinder 12 piston rods, the interior hydraulic oil of Full Tanks 10 is inhaled in the rodless cavity of matched moulds press cylinder 12 by prefill valve 9.
Pressure period shown in Fig. 3, the first solenoid directional control valve 6 is switched to " a " position, the hydraulic oil that low pressure and mass flow oil hydraulic pump 3 is got flows back to hydraulic oil container 1 via solenoid directional control valve 6, the second solenoid directional control valve 8 is switched to " b " position, solenoid valve 7 is opened, the rodless cavity that the hydraulic oil that high-pressure low-flow oil hydraulic pump 4 is got injects matched moulds press cylinder 12 via solenoid valve 7 pressurizes, ensure the mould clamping force of pressure forming machine, when hydraulic fluid pressure that high-pressure low-flow oil hydraulic pump 4 is got is too high, via Decompression valves 5 off-loads, to ensure the safety of system.
The stage of die sinking shown in Fig. 4, oil hydraulic circuit comprises die sinking loop and full oily path, the first solenoid directional control valve 6 is switched to the position of " b ", the hydraulic oil that low pressure and mass flow oil hydraulic pump 3 and high-pressure low-flow oil hydraulic pump 4 are got stream, the second solenoid directional control valve 8 is switched to the position of " a ", solenoid valve 7 cuts out, the hydraulic oil of being got by low pressure and mass flow oil hydraulic pump 3 and high-pressure low-flow oil hydraulic pump 4 is injected into dynamic model and moves in the rod chamber that drives oil hydraulic cylinder 11, dynamic model moves the piston rod retraction that drives oil hydraulic cylinder 11, pull pressure forming machine dynamic model to retreat, and then promote its piston by matched moulds press cylinder 12 piston rods and retreat, prefill valve 9 is reversed to be opened, in the rodless cavity of matched moulds press cylinder 12, hydraulic oil is pushed back in Full Tanks 10.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; in the form and details the utility model is made a variety of changes, be protection domain of the present utility model.
Claims (9)
1. the hydraulic system of a pressure forming machine; the oil hydraulic pump that comprises hydraulic oil container, be connected with hydraulic oil container, drive motor and the oil hydraulic cylinder being connected with oil hydraulic pump; it is characterized in that: described oil hydraulic cylinder comprises that dynamic model moves driving oil hydraulic cylinder and matched moulds press cylinder; described oil hydraulic pump comprises low pressure and mass flow oil hydraulic pump and high-pressure low-flow oil hydraulic pump, comprises matched moulds loop, adds hydraulic circuit, die sinking loop and full oily path between described oil hydraulic pump and oil hydraulic cylinder.
2. the hydraulic system of a kind of pressure forming machine according to claim 1; it is characterized in that: described matched moulds loop, add hydraulic circuit and die sinking loop forms loop by the first solenoid directional control valve, the second solenoid directional control valve and solenoid valve; described matched moulds loop and die sinking loop adopt same loop, and full oily path comprises Full Tanks and prefill valve.
3. the hydraulic system of a kind of pressure forming machine according to claim 2; it is characterized in that: hydraulic oil is got in described matched moulds loop and die sinking loop from hydraulic oil container by oil hydraulic pump; the hydraulic oil of getting also enters the second solenoid directional control valve stream from low pressure and mass flow oil hydraulic pump by the first solenoid directional control valve and the hydraulic oil from high-pressure low-flow oil hydraulic pump; enter into again dynamic model and move driving oil hydraulic cylinder, finally flow to hydraulic oil container from the second solenoid directional control valve.
4. the hydraulic system of a kind of pressure forming machine according to claim 2, it is characterized in that: the described hydraulic circuit that adds is got hydraulic oil from hydraulic oil container by oil hydraulic pump, the hydraulic oil of getting flows to hydraulic oil container by the first solenoid directional control valve from low pressure and mass flow oil hydraulic pump, enters into matched moulds press cylinder from the hydraulic oil of high-pressure low-flow oil hydraulic pump through solenoid valve.
5. the hydraulic system of a kind of pressure forming machine according to claim 4, is characterized in that: described adding in hydraulic circuit also comprises that a Decompression valves, Decompression valves connect two valve ports of the first solenoid directional control valve.
6. the hydraulic system of a kind of pressure forming machine according to claim 2, it is characterized in that: described full oily path is that Full Tanks is communicated with prefill valve, prefill valve connects matched moulds press cylinder, hydraulic oil enters into matched moulds press cylinder by prefill valve from Full Tanks sucking-off, or hydraulic oil is discharged and pushed back Full Tanks by prefill valve from matched moulds press cylinder.
7. the hydraulic system of a kind of pressure forming machine according to claim 2, is characterized in that: the first described solenoid directional control valve adopts bi-bit bi-pass solenoid directional control valve.
8. the hydraulic system of a kind of pressure forming machine according to claim 2, is characterized in that: the second described solenoid directional control valve adopts 3-position 4-way solenoid directional control valve.
9. the hydraulic system of a kind of pressure forming machine according to claim 1, is characterized in that: described drive motor adopts servo drive motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031568.5U CN203685731U (en) | 2014-01-20 | 2014-01-20 | Hydraulic system for pressure forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031568.5U CN203685731U (en) | 2014-01-20 | 2014-01-20 | Hydraulic system for pressure forming machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685731U true CN203685731U (en) | 2014-07-02 |
Family
ID=51007639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420031568.5U Expired - Lifetime CN203685731U (en) | 2014-01-20 | 2014-01-20 | Hydraulic system for pressure forming machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685731U (en) |
-
2014
- 2014-01-20 CN CN201420031568.5U patent/CN203685731U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: The northern industrial zone of Jimei District of Xiamen City Sun ban road 361021 Fujian province No. 71 Patentee after: XIAMEN INSVAC INTELLIGENT EQUIPMENT CO.,LTD. Address before: On the east side of West Jimei District of Xiamen City Xinglin Fujian province 361021 No. 62 - production factory Patentee before: Xiamen Insvac Machinery Manufacturing Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |