CN210240158U - High-low speed fast switching device for oil cylinder of high-pressure forming machine - Google Patents
High-low speed fast switching device for oil cylinder of high-pressure forming machine Download PDFInfo
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- CN210240158U CN210240158U CN201920874726.6U CN201920874726U CN210240158U CN 210240158 U CN210240158 U CN 210240158U CN 201920874726 U CN201920874726 U CN 201920874726U CN 210240158 U CN210240158 U CN 210240158U
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Abstract
The utility model provides a high low-speed quick auto-change over device of high pressure make-up machine hydro-cylinder, this auto-change over device and the hydro-cylinder of high pressure make-up machine are connected the transmission, include low pressure pump system and high pressure pump system: the low-pressure pump system comprises a low-pressure pump electro-hydraulic reversing valve, a low-pressure pump superposed hydraulic control one-way valve, a low-pressure pump superposed one-way throttle valve, a vane pump and a first motor which are connected through a pipeline; the pipeline terminal is communicated with the valve block; the high-pressure pump system comprises a high-pressure pump electromagnetic directional valve, a high-pressure pump superposed hydraulic control one-way valve, a high-pressure pump superposed one-way throttle valve, a plunger pump and a second motor which are connected through a pipeline; wherein the pipeline terminal is communicated with the valve block; the valve block is communicated with an oil cylinder of the high-pressure forming machine through a pipeline. The switching device reduces the damage rate of the mold during mold closing, improves the qualified rate of the blank body during mold opening, shortens the whole grouting period, and improves the comprehensive performance of the whole set of equipment.
Description
Technical Field
The utility model relates to the perfection and the application of high-pressure forming technology in the field of sanitary ceramic production, in particular to a high-low speed fast switching device of a high-pressure forming machine oil cylinder for sanitary ceramic production.
Background
At present, high-pressure forming equipment of domestic and foreign ceramic production enterprises mostly adopts the uniform-speed horizontal motion of a horizontally-installed oil cylinder to realize the die assembly before the green body is molded and the die opening after the molding is finished. In order to shorten the whole grouting period, the oil cylinder is usually fast in extension and retraction, the impact force between molds is easy to increase in the process of fast extension and retraction, and the breakage rate of the molds is increased; the instant tension force during mold opening is increased, the occurrence of blank body tension cracking is increased, once the mold is damaged, the shutdown rate of the whole equipment is increased, the running cost is increased, and the product percent of pass is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a to the quick flexible defect that leads to the mould damaged of current high pressure make-up machine slip casting in-process hydro-cylinder, provide a novel hydro-cylinder height, low-speed fast switch device, this device realizes fast forward, near slowly and move back, fast back between the switching, and have higher speed transposition stationarity of high pressure make-up machine hydro-cylinder.
In order to realize the purpose of the invention, the utility model adopts the technical scheme that: the utility model provides a high low-speed quick auto-change over device of high pressure make-up machine hydro-cylinder, this auto-change over device is connected the transmission with the hydro-cylinder of high pressure make-up machine, includes that the symmetry sets up low pressure pump system and high pressure pump system above the valve block:
the low-pressure pump system comprises a low-pressure pump electro-hydraulic reversing valve, a low-pressure pump superposed hydraulic control one-way valve, a low-pressure pump superposed one-way throttle valve, a vane pump and a first motor which are connected through a pipeline; wherein the pipeline terminal is communicated with the valve block;
the high-pressure pump system comprises a high-pressure pump electromagnetic directional valve, a high-pressure pump superposed hydraulic control one-way valve, a high-pressure pump superposed one-way throttle valve, a plunger pump and a second motor which are connected through a pipeline; wherein the pipeline terminal is communicated with the valve block;
the valve block is communicated with an oil cylinder of the high-pressure forming machine through a pipeline.
As a preferred technical scheme: the low-pressure pump electro-hydraulic reversing valve, the low-pressure pump superposed hydraulic control one-way valve and the low-pressure pump superposed one-way throttle valve are respectively a 16-path electro-hydraulic reversing valve, a 16-path superposed hydraulic control one-way valve and a 16-path superposed one-way throttle valve.
As a preferred technical scheme: the high-pressure pump electromagnetic directional valve, the high-pressure pump superposed hydraulic control one-way valve and the high-pressure pump superposed one-way throttle valve are respectively a 6-path electromagnetic directional valve, a 6-path superposed hydraulic control one-way valve and a 6-path superposed one-way throttle valve.
As a preferred technical scheme: the system also comprises a position sensor group;
the set of position sensors is arranged to sense a position of the object,
the device comprises a first position sensor and a second position sensor which are arranged on a sensor mounting rack in a high-pressure forming machine through connecting pieces, wherein the first position sensor and the second position sensor are arranged from head to tail;
the device also comprises a third position sensor arranged on the flange at the end part of the oil cylinder.
As a preferred technical scheme: the first motor and the second motor are respectively connected and controlled with a PLC of the high-pressure forming machine.
As a preferred technical scheme: the low-pressure pump system and the high-pressure pump system are independently controlled to act, the low-pressure pump system realizes low-pressure large-flow control, and the high-pressure pump system realizes high-pressure small-flow control.
The utility model has the advantages that: the hydraulic system of the switching device is provided with two sets of pump systems, namely a low-pressure pump system and a high-pressure pump system, the low-pressure pump system can realize low-pressure large flow, and the high-pressure pump system can realize high-pressure small flow; the fast forward, slow approach, slow backward, fast backward and other actions of the oil cylinder are realized through fast combination and switching between two sets of systems; the functions of fast forward, slow approach, slow backward and fast backward of the oil cylinder of the high-pressure forming machine are added, so that the damage rate of the die during die assembly is reduced, the qualification rate of blanks during die opening is improved, the whole grouting period is shortened, and the comprehensive performance of the whole set of equipment is improved.
Drawings
Fig. 1 is a schematic diagram of the main components of the present invention.
Fig. 2 is a schematic diagram of the system of the present invention.
Fig. 3 is a system application diagram of the present invention.
In the figure: the hydraulic control system comprises a low-pressure pump electro-hydraulic directional valve 1, a low-pressure pump superposed hydraulic control one-way valve 2, a low-pressure pump superposed one-way throttle valve 3, a valve block 4, a high-pressure pump electromagnetic directional valve 5, a high-pressure pump superposed hydraulic control one-way valve 6, a high-pressure pump superposed one-way throttle valve 7, a vane pump 8, a first motor 9, a plunger pump 10, a second motor 11, a hydraulic cylinder 12, a position sensor group 13 (a first position sensor 13-1, a second position sensor 13-2 and a third position sensor 13-3) and a sensor support 14.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to the attached drawings 1-3, the high-low speed quick switching device for the oil cylinder of the high-pressure forming machine is connected with the oil cylinder of the high-pressure forming machine for transmission, and comprises a low-pressure pump system and a high-pressure pump system which are symmetrically arranged on a valve block. The switching device is matched with a position sensor group arranged on the high-pressure forming machine. Each position sensor is connected with the PLC, and after a trigger signal is transmitted to the PLC, the motor of the low-pressure pump system or the motor of the high-pressure pump system can be controlled to stop rotating.
Referring to FIG. 3, the position sensor group includes a first position sensor 13-1, a second position sensor 13-2, and a third position sensor 13-3. The first position sensor 13-1 and the second position sensor 13-2 are arranged on a sensor mounting rack 14 on a main machine beam of the high-pressure forming machine through connecting pieces such as bolts, and the sensor mounting racks 14 are arranged end to end respectively; and the third position sensor 13-3 is arranged on a flange at the end part of the oil cylinder.
Referring to fig. 1-2, the low-pressure pump system comprises a low-pressure pump electro-hydraulic directional valve, a low-pressure pump superposed hydraulic control one-way valve, a low-pressure pump superposed one-way throttle valve, a vane pump and a first motor which are connected through a pipeline; wherein the pipeline terminal is communicated with the valve block. Preferably, the low-pressure pump electro-hydraulic reversing valve, the low-pressure pump superposed hydraulic control one-way valve and the low-pressure pump superposed one-way throttle valve are respectively a 16-path electro-hydraulic reversing valve, a 16-path superposed hydraulic control one-way valve and a 16-path superposed one-way throttle valve.
The high-pressure pump system comprises a high-pressure pump electromagnetic directional valve, a high-pressure pump superposed hydraulic control one-way valve, a high-pressure pump superposed one-way throttle valve, a plunger pump and a second motor which are connected through a pipeline; wherein the pipeline terminal is communicated with the valve block. The high-pressure pump electromagnetic directional valve, the high-pressure pump superposed hydraulic control one-way valve and the high-pressure pump superposed one-way throttle valve are respectively a 6-path electromagnetic directional valve, a 6-path superposed hydraulic control one-way valve and a 6-path superposed one-way throttle valve.
The valve block 4 is communicated with an oil cylinder of the high-pressure forming machine through a pipeline.
The first motor and the second motor are respectively connected and controlled with a PLC (programmable logic controller) of the high-pressure forming machine, wherein the first motor is connected with a vane pump in the low-pressure pump system, and the power of the first motor is 11 KW; the second motor is connected with a plunger pump in the high-pressure pump system, and the power of the second motor is 4 KW.
The low-pressure pump system and the high-pressure pump system are independently controlled to act, the low-pressure pump system realizes low-pressure large-flow control, and the high-pressure pump system realizes high-pressure small-flow control.
The working process of the switching device is as follows:
(1) manually starting a program, and outputting a signal by the PLC; the second motor operates, the plunger pump operates immediately, the piston rod of the oil cylinder slowly extends out and pushes the mold to a first position sensor 13-1, the first position sensor 13-1 feeds back a signal to the PLC controller, the first motor operates immediately, the vane pump operates immediately, and at the moment, the low-pressure pump electrohydraulic reversing valve 1, the low-pressure pump superposed hydraulic control one-way valve 2, the low-pressure pump superposed one-way throttle valve 3 and the high-pressure pump electromagnetic reversing valve 5, the high-pressure pump superposed hydraulic control one-way valve 6 and the high-pressure pump superposed one-way throttle valve 7 in the high-pressure pump system are communicated, the low-pressure pump system and the high-pressure pump system supply oil to the rodless cavity of the oil cylinder 12 simultaneously through the valve block 4, the piston rod of the oil cylinder extends out quickly, and fast;
(2) when a piston rod of the oil cylinder 12 extends out to push the mold to reach a second position sensor 13-2 (when the mold is pre-closed), the second position sensor 13-2 is triggered, at the moment, the low-pressure pump system stops working, high-pressure oil is independently supplied to a rodless cavity of the oil cylinder 12 by the high-pressure pump system, and the piston rod of the oil cylinder slowly extends out to realize slow advance of the oil cylinder 12;
(3) the pressure maintaining and supplementing processes are slight;
(4) after the high-pressure forming machine finishes grouting action, the PLC outputs signals to control the action of a related control valve in a high-pressure pump system, so that high-pressure oil enters a rod cavity of the oil cylinder 12, meanwhile, a rodless cavity of the oil cylinder 12 is communicated with an oil tank, and the oil cylinder moves back slowly;
(5) the piston rod of the oil cylinder 12 retracts to the position of a second position sensor, the second position sensor is triggered, the PLC controls the low-pressure pump system and the high-pressure pump system to simultaneously supply oil to the rod cavity of the oil cylinder 12, and therefore the oil cylinder 12 is quickly retracted;
(6) when a piston rod of the oil cylinder 12 retracts and drives the mould to return to the position of the first position sensor 13-1, the first position sensor is triggered, the low-pressure pump system stops working at the moment, high-pressure oil is independently supplied to a rod cavity of the oil cylinder 12 by the high-pressure pump system, the piston rod of the oil cylinder slowly retracts to the position of the third position sensor 13-3, the third position sensor is triggered to feed back to the PLC, the PLC outputs signals to enable the first motor and the second motor to stop running, the related components stop working along with the first position sensor, the oil cylinder 12 stops moving, and one cycle is completed.
Claims (6)
1. The utility model provides a high low-speed quick auto-change over device of high pressure make-up machine hydro-cylinder, this auto-change over device is connected the transmission with the hydro-cylinder of high pressure make-up machine, its characterized in that, including the symmetry set up low pressure pump system and the high pressure pump system above the valve block:
the low-pressure pump system comprises a low-pressure pump electro-hydraulic reversing valve, a low-pressure pump superposed hydraulic control one-way valve, a low-pressure pump superposed one-way throttle valve, a vane pump and a first motor which are connected through a pipeline; wherein the pipeline terminal is communicated with the valve block;
the high-pressure pump system comprises a high-pressure pump electromagnetic directional valve, a high-pressure pump superposed hydraulic control one-way valve, a high-pressure pump superposed one-way throttle valve, a plunger pump and a second motor which are connected through a pipeline; wherein the pipeline terminal is communicated with the valve block;
the valve block is communicated with an oil cylinder of the high-pressure forming machine through a pipeline.
2. The high-low speed fast switching device of the oil cylinder of the high pressure forming machine according to claim 1, wherein the low pressure pump electro-hydraulic directional valve, the low pressure pump superposed hydraulic control one-way valve and the low pressure pump superposed one-way throttle valve are respectively a 16-path electro-hydraulic directional valve, a 16-path superposed hydraulic control one-way valve and a 16-path superposed one-way throttle valve.
3. The high-low speed fast switching device of the oil cylinder of the high pressure forming machine according to claim 1, wherein the high pressure pump electromagnetic directional valve, the high pressure pump superposed hydraulic control one-way valve and the high pressure pump superposed one-way throttle valve are respectively a 6-path electromagnetic directional valve, a 6-path superposed hydraulic control one-way valve and a 6-path superposed one-way throttle valve.
4. The high and low speed fast switching device of the oil cylinder of the high pressure forming machine according to claim 1, characterized by further comprising a position sensor group;
the set of position sensors is arranged to sense a position of the object,
the device comprises a first position sensor and a second position sensor which are arranged on a sensor mounting rack in a high-pressure forming machine through connecting pieces, wherein the first position sensor and the second position sensor are arranged from head to tail;
the device also comprises a third position sensor arranged on the flange at the end part of the oil cylinder.
5. The high and low speed fast switching device of the oil cylinder of the high pressure forming machine according to claim 1, wherein the first motor and the second motor are respectively connected and controlled with a PLC controller of the high pressure forming machine.
6. The high and low speed fast switching device of the oil cylinder of the high pressure forming machine according to claim 1, characterized in that the low pressure pump system and the high pressure pump system are controlled independently, the low pressure pump system realizes low pressure large flow control, and the high pressure pump system realizes high pressure small flow control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920874726.6U CN210240158U (en) | 2019-06-12 | 2019-06-12 | High-low speed fast switching device for oil cylinder of high-pressure forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920874726.6U CN210240158U (en) | 2019-06-12 | 2019-06-12 | High-low speed fast switching device for oil cylinder of high-pressure forming machine |
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| Publication Number | Publication Date |
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| CN210240158U true CN210240158U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920874726.6U Active CN210240158U (en) | 2019-06-12 | 2019-06-12 | High-low speed fast switching device for oil cylinder of high-pressure forming machine |
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| CN (1) | CN210240158U (en) |
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- 2019-06-12 CN CN201920874726.6U patent/CN210240158U/en active Active
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Address after: 063304 No.188 Yutang line, Fengnan District, Tangshan City, Hebei Province Patentee after: Tangshan Hexiang Intelligent Technology Co., Ltd Address before: 063000, Daling village, Xinzhuang Town, Fengnan District, Hebei, Tangshan City Patentee before: TANGSHAN HEXIANG INDUSTRIAL Co.,Ltd. |
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