CN201026660Y - Hydraulic control apparatus of compression roller - Google Patents
Hydraulic control apparatus of compression roller Download PDFInfo
- Publication number
- CN201026660Y CN201026660Y CNU2007200506057U CN200720050605U CN201026660Y CN 201026660 Y CN201026660 Y CN 201026660Y CN U2007200506057 U CNU2007200506057 U CN U2007200506057U CN 200720050605 U CN200720050605 U CN 200720050605U CN 201026660 Y CN201026660 Y CN 201026660Y
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- hydraulic
- oil
- valve
- hydraulic oil
- solenoid directional
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Abstract
A hydraulic control device of the press roller comprises a hydraulic cylinder, a hydraulic oil unit and a hydraulic circuit. The upper cavity and the lower cavity of the hydraulic cylinder is connected with the oil outlet and the oil return port of the hydraulic oil unit through the hydraulic circuit which comprises a first electromagnetic reversing valve used to reverse the flow direction of the hydraulic oil. The device is characterized in that the hydraulic circuit also comprises a hydraulic supplement branch comprising an energy accumulator and a second electromagnetic reversing valve; the energy accumulator is connected with the oil outlet of the hydraulic oil unit; a one-way valve preventing the hydraulic oil from returning to the hydraulic oil unit is arranged between the energy accumulator and the oil outlet of the hydraulic oil unit; the second electromagnetic reversing valve is a two-position four-way reversing valve which is provided with an enclosed place and a communicating place; the oil port in one side is connected with the energy accumulator and the oil return port of the hydraulic oil unit respectively, while the oil port in the other side is communicated with the upper cavity and the lower cavity of the hydraulic cylinder respectively. The stretcher rolls of the utility model have stable pressing pressure, and the sheet produced by the sheet stretching device has uniform thickness.
Description
Technical field
The utility model relates to the equipment of producing sheet material, specifically, relates to the hydraulic control device of pressure roller in the sheet material calender device.
Background technology
In the existing sheet material calender device, a common stretcher roll is fixedly mounted on the frame, and utilizes hydraulic cylinder to make one or two other stretcher roll near the stretcher roll that is fixedly mounted on the frame, and keeps certain spacing and pressing pressure; The action of hydraulic cylinder is controlled by hydraulic control device.Stretcher roll rotates during production, and material passes through from the gap between the two adjacent stretcher rolls, and is squeezed into the sheet material of predetermined thickness.
In process of production, there is the problem of hydraulic fluid leak usually in hydraulic cylinder, and existing hydraulic control device can not in time replenish hydraulic oil in hydraulic cylinder, so that the oil pressure in the hydraulic cylinder descends, thereby the pressing pressure between the stretcher roll is reduced, and the sheet thickness of producing can not meet pre-provisioning request.In addition, before producing sheet material, usually need to regulate the spacing between the stretcher roll, be provided with micro-adjusting mechanism between the two adjacent stretcher rolls, but because hydraulic cylinder is to the huge thrust of stretcher roll, make micro-adjusting mechanism compacted, thereby can not be in the spacing of regulating under the state that is laminated between two stretcher rolls between the stretcher roll; If but two stretcher rolls are regulated micro-adjusting mechanism after separately again, and then make two stretcher roll pressings, then being easy to generate gap error, need repeat usually repeatedly spacing could be regulated, efficient is lower.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of hydraulic control device that can make the stable pressing pressure of maintenance between the pressure roller; And further make this hydraulic control device not hinder the adjusting of the spacing under stitching state between the stretcher roll.The technical scheme that adopts is as follows:
A kind of hydraulic control device of pressure roller, comprise hydraulic cylinder, hydraulic oil unit and hydraulic circuit, the epicoele of hydraulic cylinder is connected with oil return opening with the oil-out of hydraulic oil unit by hydraulic circuit with cavity of resorption, comprise in the hydraulic circuit and be used to switch first solenoid directional control valve that hydraulic oil flows to, it is characterized in that: described hydraulic circuit comprises that also hydraulic oil replenishes branch road, and this hydraulic oil replenishes branch road and comprises the accumulator and second solenoid directional control valve; Accumulator is connected with the oil-out of hydraulic oil unit, is provided with one between the oil-out of accumulator and hydraulic oil unit and is used to prevent that hydraulic oil is back to the check valve of hydraulic oil unit; Second solenoid directional control valve is a two-position four way change valve, and this reversal valve has a detent position and a connection position, and the hydraulic fluid port of one side connects the oil return opening of accumulator and hydraulic oil unit respectively, and the hydraulic fluid port of opposite side connects the epicoele and the cavity of resorption of hydraulic cylinder respectively.
Hydraulic oil unit generally includes fuel tank, oil pump and motor, and fuel tank is provided with oil return opening, and oil pump is communicated with fuel tank and is provided with oil-out, and motor is used to drive oil pump.
The hydraulic fluid port of first solenoid directional control valve, one side connects the epicoele and the cavity of resorption of hydraulic cylinder respectively, and the hydraulic fluid port of opposite side connects the oil-out and the oil return opening of hydraulic oil unit respectively.First solenoid directional control valve is used to control piston rod flexible of hydraulic cylinder.First solenoid directional control valve can adopt 3-position 4-way O type function magnetic valve, and the centre of this magnetic valve is a detent position, and is left and right for being communicated with position and hydraulic fluid port annexation difference.First solenoid directional control valve also can adopt two-position four-way I type function magnetic valve, and this magnetic valve has two and is communicated with the position, and two hydraulic fluid port annexation differences that are communicated with the position; In order to prevent that the oil in the hydraulic cylinder from refluxing, in hydraulic circuit, be provided with a pair of fluid-control one-way control valve, it is connected with above-mentioned two-position four-way I type function magnetic valve.The hydraulic oil import and export of the epicoele of each hydraulic cylinder is provided with choke valve, and this choke valve is used to control the flow velocity of hydraulic oil of the epicoele of liquid in-out cylinder pressure; The hydraulic oil import and export of the cavity of resorption of each hydraulic cylinder is provided with choke valve, and choke valve is used to control the flow velocity of hydraulic oil of the cavity of resorption of liquid in-out cylinder pressure.
Second solenoid directional control valve is in when being communicated with the position, and accumulator is communicated with the cavity of resorption of hydraulic cylinder, and the epicoele of hydraulic cylinder is communicated with the oil return opening of hydraulic oil unit.
In order to make the spacing between the stretcher roll under phase stitching state between the stretcher roll, be easy to regulate, the cavity of resorption of above-mentioned hydraulic cylinder connects first overflow valve by the 3rd solenoid directional control valve, wherein the 3rd solenoid directional control valve is bi-bit bi-pass solenoid directional control valve or two-position four-way solenoid directional control valve, and this reversal valve has a detent position and a connection position.
Too high in order to prevent the oil pressure in hydraulic circuit and the hydraulic cylinder, connect second overflow valve at the oil-out place of hydraulic oil unit.When the hydraulic oil oil pressure of the oil-out of hydraulic oil unit output is higher than the setting value of second overflow valve, the valve port of second overflow valve is opened, part hydraulic oil flows back in the fuel tank of hydraulic oil unit, and the oil pressure in hydraulic circuit and the hydraulic cylinder is limited in the setting value of second overflow valve.
Too high in order to prevent the hydraulic oil oil pressure that is delivered to the hydraulic cylinder from hydraulic oil unit, on the oil-out of hydraulic oil unit and the pipeline road between first solenoid directional control valve, be provided with pressure-reducing valve.
The utility model replenishes branch road owing to be provided with hydraulic oil, can in time replenish hydraulic oil to hydraulic cylinder, makes hydraulic cylinder keep comparatively stable oil pressure, thereby makes the pressing pressure stability between the stretcher roll, and the sheet thickness that the sheet material calender device is produced is even; Because the cavity of resorption of hydraulic cylinder is connected with overflow valve by the 3rd solenoid directional control valve, therefore this hydraulic control device does not hinder the adjusting of the spacing under stitching state between the stretcher roll, and the staff can regulate the spacing between the stretcher roll rapidly, exactly.
Description of drawings
Accompanying drawing is the schematic diagram of the utility model one preferred embodiment.
The specific embodiment
As shown in drawings, the hydraulic control device of this pressure roller comprises hydraulic cylinder 1 (hydraulic cylinder 1 has four), hydraulic oil unit 2 and hydraulic circuit, the epicoele 11 of hydraulic cylinder 1 is connected with oil return opening 22 with the oil-out 21 of hydraulic oil unit 2 by hydraulic circuit with cavity of resorption 12, comprise in the hydraulic circuit and be used to switch first solenoid directional control valve 3 (first solenoid directional control valve 3 has two, two hydraulic cylinders 1 of each first solenoid directional control valve, 3 control) that hydraulic oil flows to.The hydraulic fluid port of first solenoid directional control valve, 3 one sides connects the epicoele 11 and the cavity of resorption 12 of hydraulic cylinder 1 respectively, and the hydraulic fluid port of opposite side connects the oil-out 21 and the oil return opening 22 of hydraulic oil unit 2 respectively.First solenoid directional control valve 3 adopts 3-position 4-way O type function magnetic valve, and the centre of this magnetic valve 3 is a detent position, and is left and right for being communicated with position and hydraulic fluid port annexation difference.First solenoid directional control valve 3 is used to control piston rod 13 flexible of hydraulic cylinder 1.The hydraulic oil import and export of the epicoele 11 of each hydraulic cylinder 1 is provided with choke valve 31, and choke valve 31 is used to control the flow velocity of hydraulic oil of the epicoele 11 of liquid in-out cylinder pressure 1; The hydraulic oil import and export of the cavity of resorption 12 of each hydraulic cylinder 1 is provided with choke valve 32, and choke valve 32 is used to control the flow velocity of hydraulic oil of the cavity of resorption 12 of liquid in-out cylinder pressure 1.
Hydraulic circuit comprises that also hydraulic oil replenishes branch road, and this hydraulic oil replenishes branch road and comprises accumulator 4 and second solenoid directional control valve 5 (second solenoid directional control valve 5 has two, and each second solenoid directional control valve 5 connects two hydraulic cylinders 1); Accumulator 4 is connected with the oil-out 21 of hydraulic oil unit 2, is provided with one between the oil-out 21 of accumulator 4 and hydraulic oil unit 2 and is used to prevent that hydraulic oil is back to the check valve 6 of hydraulic oil unit 2; Second solenoid directional control valve 5 is a two-position four way change valve, has a detent position and a connection position, and the hydraulic fluid port of one side connects the oil return opening 22 of accumulator 4 and hydraulic oil unit 2 respectively, and the hydraulic fluid port of opposite side connects the epicoele 11 and the cavity of resorption 12 of hydraulic cylinder 1 respectively.Second solenoid directional control valve 5 is in when being communicated with the position, and accumulator 4 is communicated with the cavity of resorption 12 of hydraulic cylinder 1, and the epicoele 11 of hydraulic cylinder 1 is communicated with the oil return opening 22 of hydraulic oil unit 2.
The cavity of resorption 12 of hydraulic cylinder 1 connects first overflow valve 7 by choke valve 32, the 3rd solenoid directional control valve 33 successively, and (first overflow valve 7 has two, each first overflow valve 7 connects the cavity of resorption 12 of two hydraulic cylinders 1), wherein (the 3rd solenoid directional control valve 33 has two to the 3rd solenoid directional control valve 33, each the 3rd solenoid directional control valve 33 connects one first overflow valve 7) be the two-position four-way solenoid directional control valve, this reversal valve 6 has a detent position and a connection position.In other embodiments, the 3rd solenoid directional control valve can adopt the bi-bit bi-pass solenoid directional control valve, and this bi-bit bi-pass solenoid directional control valve has a detent position and a connection position.
Oil-out 21 places of hydraulic oil unit 2 connect second overflow valve 8.When the hydraulic oil oil pressure of oil-out 21 output of hydraulic oil unit 2 is higher than the setting value of second overflow valve 8, the valve port of second overflow valve 8 is opened, part hydraulic oil flows back in the fuel tank 23 of hydraulic oil unit 2, and the oil pressure in hydraulic circuit and the hydraulic cylinder 1 is limited in the setting value of second overflow valve 8.
Pipeline road between the oil-out 21 of hydraulic oil unit 2 and first solenoid directional control valve 3 is provided with pressure-reducing valve 9 (pressure-reducing valve 9 has two, and each pressure-reducing valve 9 connects one first solenoid directional control valve 3).
Brief description is the operation principle of this hydraulic control device once:
When the spacing between the needs adjusting stretcher roll, the 3rd solenoid directional control valve 33 is in and is communicated with the position, the cavity of resorption 12 of hydraulic cylinder 1 is communicated with first overflow valve 7, the pressure that is sent to first overflow valve 7 when the cavity of resorption 12 of hydraulic cylinder 1 is during greater than the setting value of first overflow valve 7, the valve port of first overflow valve 7 is opened, part hydraulic oil flows back in the fuel tank 23 of hydraulic oil unit 2, oil pressure in the cavity of resorption 12 of hydraulic cylinder 1 reduces, the thrust of 1 pair of stretcher roll of hydraulic cylinder reduces, make micro-adjusting mechanism be easy to regulate, thereby be implemented in the spacing of regulating under the state that is laminated between two stretcher rolls between the stretcher roll; Finish after the adjusting of the spacing between the stretcher roll, in the process of carrying out sheet production, the 3rd solenoid directional control valve 33 is in detent position, and being connected between the cavity of resorption 12 that cuts off hydraulic cylinder 1 and first overflow valve 7, the oil pressure in the cavity of resorption 12 of hydraulic cylinder 1 is influenced by first overflow valve 7 no longer.
Claims (6)
1. the hydraulic control device of a pressure roller, comprise hydraulic cylinder, hydraulic oil unit and hydraulic circuit, the epicoele of hydraulic cylinder is connected with oil return opening with the oil-out of hydraulic oil unit by hydraulic circuit with cavity of resorption, comprise in the hydraulic circuit and be used to switch first solenoid directional control valve that hydraulic oil flows to, it is characterized in that: described hydraulic circuit comprises that also hydraulic oil replenishes branch road, and this hydraulic oil replenishes branch road and comprises the accumulator and second solenoid directional control valve; Accumulator is connected with the oil-out of hydraulic oil unit, is provided with one between the oil-out of accumulator and hydraulic oil unit and is used to prevent that hydraulic oil is back to the check valve of hydraulic oil unit; Second solenoid directional control valve is a two-position four way change valve, and this reversal valve has a detent position and a connection position, and the hydraulic fluid port of one side connects the oil return opening of accumulator and hydraulic oil unit respectively, and the hydraulic fluid port of opposite side connects the epicoele and the cavity of resorption of hydraulic cylinder respectively.
2. the hydraulic control device of pressure roller according to claim 1, it is characterized in that: the cavity of resorption of described hydraulic cylinder connects first overflow valve by the 3rd solenoid directional control valve, wherein the 3rd solenoid directional control valve is bi-bit bi-pass solenoid directional control valve or two-position four-way solenoid directional control valve, and this reversal valve has a detent position and a connection position.
3. the hydraulic control device of pressure roller according to claim 1 and 2, it is characterized in that: the oil-out place of described hydraulic oil unit connects second overflow valve.
4. the hydraulic control device of pressure roller according to claim 1 and 2, it is characterized in that: the pipeline road between the oil-out of described hydraulic oil unit and first solenoid directional control valve is provided with pressure-reducing valve.
5. the hydraulic control device of pressure roller according to claim 3, it is characterized in that: the pipeline road between the oil-out of described hydraulic oil unit and first solenoid directional control valve is provided with pressure-reducing valve.
6. the hydraulic control device of pressure roller according to claim 1 and 2, it is characterized in that: the hydraulic oil import and export of the epicoele of described each hydraulic cylinder is provided with choke valve; The hydraulic oil import and export of the cavity of resorption of each hydraulic cylinder also is provided with choke valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200506057U CN201026660Y (en) | 2007-04-23 | 2007-04-23 | Hydraulic control apparatus of compression roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200506057U CN201026660Y (en) | 2007-04-23 | 2007-04-23 | Hydraulic control apparatus of compression roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201026660Y true CN201026660Y (en) | 2008-02-27 |
Family
ID=39130861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200506057U Expired - Lifetime CN201026660Y (en) | 2007-04-23 | 2007-04-23 | Hydraulic control apparatus of compression roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201026660Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100577400C (en) * | 2008-07-01 | 2010-01-06 | 南通市南方润滑液压设备有限公司 | Controllable type rolling machine hydraulic system |
-
2007
- 2007-04-23 CN CNU2007200506057U patent/CN201026660Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100577400C (en) * | 2008-07-01 | 2010-01-06 | 南通市南方润滑液压设备有限公司 | Controllable type rolling machine hydraulic system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080227 |
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| CX01 | Expiry of patent term |