CN111102254A - Hydraulic control system of hydraulic plate shearing machine - Google Patents
Hydraulic control system of hydraulic plate shearing machine Download PDFInfo
- Publication number
- CN111102254A CN111102254A CN201811267723.2A CN201811267723A CN111102254A CN 111102254 A CN111102254 A CN 111102254A CN 201811267723 A CN201811267723 A CN 201811267723A CN 111102254 A CN111102254 A CN 111102254A
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- Prior art keywords
- oil
- electromagnetic directional
- valve
- cylinder
- directional valve
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
- B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Shearing Machines (AREA)
Abstract
The invention discloses a hydraulic control system of a hydraulic plate shearing machine, which is provided with a left oil cylinder and a right oil cylinder, wherein the left oil cylinder and the right oil cylinder are connected through a high-pressure oil pump, a cartridge valve, an electromagnetic directional valve, a one-way valve, an overflow valve and a special control valve; the pressure required by the system is provided by a high-pressure oil pump, and when the oil pump works, the output oil enters the cartridge valve through a pipeline and returns to the oil tank through the electromagnetic directional valve; when the electromagnetic directional valve is powered on to work, the pressure of the oil line is gradually increased, the electromagnetic directional valve is connected with an oil line of a material pressing cylinder, the material pressing cylinder presses a plate material after overcoming the tension of a spring, the electromagnetic directional valve which works in a delayed mode is powered on to work under the control of a time relay, hydraulic oil enters an upper cavity of a left cylinder, a main oil cylinder starts to push a tool rest to move downwards to a lower dead point, a stroke switch is actuated by a collision block, the electromagnetic directional valve is reset, the material pressing cylinder is reset under the action of spring force, the electromagnetic directional valve is powered on to work, the hydraulic oil enters a lower cavity of the; the hydraulic control system is accurate in control and rapid and reliable in action.
Description
Technical Field
The invention relates to the technical field of mechanical equipment control, in particular to a hydraulic control system of a hydraulic plate shearing machine.
Background
The hydraulic plate shearing machine applies shearing force to metal plates with various thicknesses by means of a movable upper blade and a fixed lower blade and adopting a reasonable blade gap, so that the plates are broken and separated according to required sizes. The hydraulic control system of the existing hydraulic plate shearing machine does not realize full-automatic control, and the hydraulic plate shearing machine which realizes automatic control also has the problems of low working efficiency and more waste materials due to insensitive control system and inaccurate control. Therefore, it is necessary to provide a new hydraulic control system for a hydraulic plate shearing machine.
Disclosure of Invention
The invention aims to provide a hydraulic control system of a hydraulic plate shearing machine, aiming at the problems that the existing hydraulic plate shearing machine does not realize full-automatic control, and the control is not accurate, so that the working efficiency is low and more waste materials exist.
The technical scheme of the invention is as follows: a hydraulic control system for a hydraulic plate shearing machine having a left cylinder and a right cylinder, in particular: the left oil cylinder and the right oil cylinder are composed of a high-pressure oil pump, a cartridge valve, an electromagnetic directional valve, a one-way valve, an overflow valve and a special control valve; the pressure oil required by the system is provided by a high-pressure oil pump, when the oil pump works, the output oil enters a cartridge valve through a pipeline and returns to an oil tank through an electromagnetic directional valve, when the electromagnetic directional valve is electrified to work, a control oil way is sealed by the electromagnetic directional valve, the pressure of the oil way is gradually increased, the electromagnetic directional valve is connected with an oil way of a material pressing cylinder, the material pressing cylinder firstly presses a plate after overcoming the tensile force of a spring, then the electromagnetic directional valve which works in a delayed mode is controlled by a time relay to work in an electrified mode, the hydraulic oil enters an upper cavity of a left cylinder, a main oil cylinder starts to push a tool rest to move downwards, a stroke switch is actuated by a collision block when the upper tool rest moves downwards to a lower dead point, the electromagnetic directional valve resets, the material pressing cylinder resets under the action of the spring force.
The hydraulic plate shearing machine control system is elaborately designed according to the structure of the hydraulic plate shearing machine and the distribution positions of the oil cylinders, is accurate in control, is rapid and reliable in action, greatly improves the working efficiency, greatly reduces the waste rate, and is suitable for wide popularization and application.
Drawings
FIG. 1 is a schematic diagram of the control system connections of the present invention;
fig. 2 is a control block diagram of the present invention.
In the figure: 1-oil filter, 2-motor, 3-high pressure oil pump, 4-pressure gauge, 5-cartridge valve, 6-pressure regulating cover plate, 7, 8-electromagnetic liquid reversing valve, 9-one-way valve, 10-direct-acting or overflow valve, 11-oil drain valve, 12-one-way valve, 13, 14-electromagnetic reversing valve, 15-one-way valve, 16-pressure cylinder, 17-left oil cylinder and 18-right oil cylinder.
Detailed Description
Example 1
Referring to fig. 1 and 2, the technical scheme of the invention is as follows: a hydraulic control system for a hydraulic plate shearing machine having a left cylinder 17 and a right cylinder 18, in particular: the left oil cylinder 17 and the right oil cylinder 18 are formed by connecting a high-pressure oil pump 3, a cartridge valve 5, a pressure regulating cover plate 6, an electromagnetic directional valve 7 or 8 or 13 or 14, a one-way valve 9 or 12, an overflow valve 10 and a special control valve 11; the high-pressure oil pump 3 is connected with the motor 2 and the oil filter 1, the oil pipe is externally connected with a pressure gauge 4, pressure oil required by the system is provided by the high-pressure oil pump, and the control system is also connected with a material pressing cylinder through a one-way valve 15; when the oil pump works, the output oil enters the cartridge valve through a pipeline and returns to the oil tank through the electromagnetic directional valve, when the electromagnetic directional valve is powered on to work, the control oil way is sealed by the electromagnetic directional valve, the pressure of the oil way is gradually increased, the electromagnetic directional valve is connected with the oil way of the pressing cylinder, the pressing cylinder firstly presses the plate after overcoming the tensile force of the spring, then the electromagnetic directional valve which is controlled by the time relay to work in a delayed mode is powered on to work, the hydraulic oil enters the upper cavity of the left cylinder, the main oil cylinder starts to push the tool rest to move downwards, the collision block enables the stroke switch to act when the upper tool rest moves downwards to the bottom dead point, the electromagnetic directional valve resets, the pressing cylinder resets under the action of the spring force, the electromagnetic directional valve 8 is powered on.
The specific working principle is as follows: when the oil pump works, the output oil enters the cartridge valves 5 and 6 and the electromagnetic directional valve 7 through pipelines and returns to the oil tank, the system is in a load-relief state, the pressure is not built in the oil circuit, and the machine does not generate any action. When the electromagnetic directional valve 7 (YV 1), the electromagnetic directional valve 14 (YV 4) and the electromagnetic directional valve 8 (YV 3) are electrified to work, the control oil way is sealed by the No. 7 (YV 1) electromagnetic directional valve, so that the pressure of the oil way is gradually increased, in the process of gradually increasing the pressure of the oil way, the electromagnetic directional valve 14 (YV 4) is communicated with the oil way of the material pressing cylinder, the material pressing cylinder firstly presses the plate material after overcoming the tensile force of the spring, and the pressing time of the material pressing cylinder is not more than 0.5 s. Then, the electromagnetic directional valve 8 (YV 3) which is controlled by the time relay to work in a delayed mode is electrified to work, hydraulic oil enters the upper cavity of the left cylinder (the hydraulic oil is filled in the series cylinders when the series cylinders leave a factory), and the main oil cylinder 17 starts to push the tool rest to move downwards. When the upper tool rest moves down to the bottom dead center, the stroke switch is actuated by the collision block, the electromagnetic directional valve 14 (YV 4) is reset, and the material pressing cylinder is reset under the action of spring force. The electromagnetic directional valve 8 (YV 2) is electrified to work, hydraulic oil enters the lower cavity of the oil cylinder, and the knife rest returns to the upper dead point collision block.
When the machine is sheared, if the shearing force at the right end is obviously weakened, oil is required to be filled, the change-over switch is switched to the state that the oil filling is required to be carried out when the tool rest is empty, the oil filling button is inching, the series cylinder starts to fill the oil, the oil filling button is loosened, and the oil filling is stopped.
Claims (1)
1. A hydraulic control system for a hydraulic plate shearing machine having a left cylinder and a right cylinder, in particular: the left oil cylinder and the right oil cylinder are composed of a high-pressure oil pump, a cartridge valve, an electromagnetic directional valve, a one-way valve, an overflow valve and a special control valve; the pressure oil required by the system is provided by a high-pressure oil pump, when the oil pump works, the output oil enters a cartridge valve through a pipeline and returns to an oil tank through an electromagnetic directional valve, when the electromagnetic directional valve is electrified to work, a control oil way is sealed by the electromagnetic directional valve, the pressure of the oil way is gradually increased, the electromagnetic directional valve is connected with an oil way of a material pressing cylinder, the material pressing cylinder firstly presses a plate after overcoming the tensile force of a spring, then the electromagnetic directional valve which works in a delayed mode is controlled by a time relay to work in an electrified mode, the hydraulic oil enters an upper cavity of a left cylinder, a main oil cylinder starts to push a tool rest to move downwards, a stroke switch is actuated by a collision block when the upper tool rest moves downwards to a lower dead point, the electromagnetic directional valve resets, the material pressing cylinder resets under the action of the spring force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267723.2A CN111102254A (en) | 2018-10-29 | 2018-10-29 | Hydraulic control system of hydraulic plate shearing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267723.2A CN111102254A (en) | 2018-10-29 | 2018-10-29 | Hydraulic control system of hydraulic plate shearing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111102254A true CN111102254A (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811267723.2A Pending CN111102254A (en) | 2018-10-29 | 2018-10-29 | Hydraulic control system of hydraulic plate shearing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111102254A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531219A (en) * | 2020-05-11 | 2020-08-14 | 朱佳琦 | Hydraulic automatic control system of hydraulic shearing machine tool |
-
2018
- 2018-10-29 CN CN201811267723.2A patent/CN111102254A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531219A (en) * | 2020-05-11 | 2020-08-14 | 朱佳琦 | Hydraulic automatic control system of hydraulic shearing machine tool |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200505 |