阅读说明：本技术 一种拉伸机联动控制系统 (Stretcher linkage control system ) 是由 王振华 张利 邱鹏 刘西彬 马广乾 张华伟 于 2021-10-18 设计创作，主要内容包括：本发明公开一种拉伸机联动控制系统,涉及拉伸机控制技术领域,包括：主缸快速下行模块,用于执行主缸快速下行动作；主缸慢速加压模块,与主缸快速下行模块连接,用于在执行主缸快速下行动作之后,执行主缸慢速加压动作；泄压模块,与主缸慢速加压模块连接,用于在执行主缸慢速加压动作之后,执行泄压动作；主缸回程与顶缸顶出联动模块,与泄压模块连接,用于在执行泄压动作之后,同时执行主缸回程动作和顶缸顶出动作；顶缸复位模块,与主缸回程与顶缸顶出联动模块连接,用于在执行主缸回程动作和顶缸顶出动作之后,执行顶缸复位动作。本发明在提高加工效率的同时具有极低的成本。(The invention discloses a stretcher linkage control system, which relates to the technical field of stretcher control and comprises the following components: the master cylinder rapid descending module is used for executing the master cylinder rapid descending action; the master cylinder slow pressurizing module is connected with the master cylinder fast descending module and is used for executing the master cylinder slow pressurizing action after executing the master cylinder fast descending action; the pressure relief module is connected with the master cylinder slow pressurization module and is used for executing pressure relief action after executing master cylinder slow pressurization action; the main cylinder return and ejection linkage module is connected with the pressure relief module and is used for simultaneously executing main cylinder return action and ejection action of the ejection cylinder after executing pressure relief action; and the jacking cylinder resetting module is connected with the main cylinder return stroke and jacking cylinder ejection linkage module and is used for executing the jacking cylinder resetting action after executing the main cylinder return stroke action and the jacking cylinder ejection action. The invention has extremely low cost while improving the processing efficiency.)

1. A stretcher linkage control system, characterized by comprising:

the master cylinder rapid descending module is used for executing the master cylinder rapid descending action;

the main cylinder slow pressurizing module is connected with the main cylinder fast descending module and is used for executing the main cylinder slow pressurizing action after executing the main cylinder fast descending action;

the pressure relief module is connected with the master cylinder slow pressurization module and is used for executing pressure relief action after executing master cylinder slow pressurization action;

the main cylinder return and ejection linkage module is connected with the pressure relief module and is used for simultaneously executing main cylinder return action and ejection action of the ejection cylinder after executing pressure relief action;

and the jacking cylinder resetting module is connected with the main cylinder return stroke and jacking cylinder ejection linkage module and is used for executing the jacking cylinder resetting action after executing the main cylinder return stroke action and the jacking cylinder ejection action.

2. The stretcher linkage control system according to claim 1, wherein the master cylinder rapid descending module specifically comprises a first solenoid valve, a third solenoid valve, a ninth solenoid valve, a tenth solenoid valve, a motor-pump set, a second valve cartridge, a third valve cartridge, a fourth valve cartridge and a fifth valve cartridge;

the fourth plug-in valve group and the fifth plug-in valve group are connected with the motor-pump group; the second valve plug-in mounting group is connected with the third valve plug-in mounting group; the third valve plug-in mounting group is connected with the fourth valve plug-in mounting group; the fourth plug-in valve group is connected with an oil tank; the fifth plug-in valve group is connected with a quick cylinder in the main cylinder; the second plug-in valve group is connected with a main cylinder lower cavity in the main cylinder;

the first electromagnetic valve is connected with the fourth cartridge valve group; the ninth electromagnetic valve is connected with the second cartridge valve group; the tenth electromagnetic valve is connected with the third cartridge valve group; the third electromagnetic valve is connected with the fifth cartridge valve group;

when the first solenoid valve, the third solenoid valve, the ninth solenoid valve and the tenth solenoid valve are electrified, the fourth valve cartridge, the fifth valve cartridge, the second valve cartridge and the third valve cartridge are opened; high-pressure oil of the motor pump set enters the quick cylinder through the fifth cartridge valve group to push a main cylinder piston rod in the main cylinder to quickly move downwards, and meanwhile, oil in a main cylinder lower cavity passes through the second cartridge valve group, the third cartridge valve group and the fourth cartridge valve group oil return box to enable the main cylinder to quickly move close to a workpiece and execute quick descending action of the main cylinder.

3. The linkage control system of the stretching machine as claimed in claim 2, wherein the master cylinder slow pressurizing module specifically comprises a fourth solenoid valve and a sixth cartridge valve group;

the fourth electromagnetic valve is connected with the sixth plug-in valve group; the sixth plug-in valve group is respectively connected with the fifth plug-in valve group and a main cylinder upper cavity in a main cylinder;

when the first solenoid valve, the third solenoid valve, the fourth solenoid valve, the ninth solenoid valve and the tenth solenoid valve are electrified, the fourth valve cartridge, the fifth valve cartridge, the sixth valve cartridge, the second valve cartridge and the third valve cartridge are opened; one part of high-pressure oil of the motor pump set enters the quick cylinder through the fifth cartridge valve group, the other part of the high-pressure oil of the motor pump set enters the main cylinder upper cavity through the sixth cartridge valve group, and simultaneously the oil of the main cylinder lower cavity passes through the second cartridge valve group, the third cartridge valve group and the fourth cartridge valve group and continues to return to the oil tank, so that the volume of the main cylinder upper cavity is increased, the operating speed of a main cylinder piston rod is reduced until the main cylinder piston rod contacts a workpiece, the pressure in the main cylinder is increased, and the main cylinder is slowly pressurized.

4. The stretcher linkage control system according to claim 3, wherein the pressure relief module specifically comprises a second solenoid valve, a fifth solenoid valve and a seventh cartridge valve group;

the second electromagnetic valve is connected with the fourth cartridge valve group; the fifth electromagnetic valve is connected with the seventh plug-in valve group; the seventh plug-in valve group is respectively connected with the quick cylinder, the third plug-in valve group and an oil tank;

when the first solenoid valve, the third solenoid valve, the fourth solenoid valve, the ninth solenoid valve and the tenth solenoid valve are powered off, the fourth valve cartridge, the fifth valve cartridge, the sixth valve cartridge, the second valve cartridge and the third valve cartridge are closed;

when the second electromagnetic valve and the fifth electromagnetic valve are electrified, the seventh plug-in valve group is opened; and the oil in the upper cavity of the main cylinder passes through the oil return box of the seventh plug-in valve group, so that the pressure in the upper cavity of the main cylinder is reduced to a set pressure, and the pressure relief action is executed.

5. The stretcher linkage control system as claimed in claim 4, wherein the master cylinder return and top cylinder ejection linkage module specifically comprises a sixth solenoid valve, a seventh solenoid valve, an eighth solenoid valve, a first valve cartridge, an eighth valve cartridge and a liquid charging valve;

the sixth electromagnetic valve is connected with the liquid charging valve; the seventh electromagnetic valve is connected with the eighth cartridge valve group; the eighth plug-in valve group is respectively connected with the top cylinder lower cavity in the quick cylinder and the top cylinder; the eighth electromagnetic valve is connected with the first cartridge valve group; the first plug-in valve group is respectively connected with the motor-pump group and the second plug-in valve group;

after the pressure in the upper cavity of the master cylinder is reduced to the set pressure, the eighth solenoid valve and the ninth solenoid valve are electrified, and the first plug-in valve group and the second plug-in valve group are opened; oil of the motor-pump set enters the lower cavity of the main cylinder through the first plug-in valve group and the second plug-in valve group, and a piston rod of the main cylinder rises; when the sixth electromagnetic valve is electrified, the liquid filling valve is opened, oil in the upper cavity of the main cylinder directly returns to the oil tank through the liquid filling valve to execute return motion of the main cylinder, at the moment, the seventh electromagnetic valve is electrified, the eighth plug-in valve group is opened, and the oil in the quick cylinder enters the lower cavity of the jacking cylinder through the eighth plug-in valve group to push out a workpiece and execute jacking motion of the jacking cylinder.

6. The stretcher linkage control system as claimed in claim 5, wherein the top cylinder resetting module specifically comprises a twelfth solenoid valve, a tenth cartridge valve group and a twelfth cartridge valve group;

the twelfth electromagnetic valve is connected with the tenth cartridge valve group; the tenth plug-in valve group is respectively connected with the motor pump group and a top cylinder upper cavity in a top cylinder; the twelfth plug-in valve group is respectively connected with the lower cavity of the top cylinder and the oil tank;

when the twelfth electromagnetic valve is electrified, the tenth plug-in valve group is opened, and oil of the motor-pump group enters the upper cavity of the top cylinder through the tenth plug-in valve group; when the seventh electromagnetic valve is powered off, the oil in the lower cavity of the top cylinder passes through the oil return box of the twelfth cartridge valve group, the top cylinder moves downwards, and the top cylinder is reset.

7. The stretcher linkage control system according to claim 6, wherein the first, second, fifth, sixth, seventh, eighth and tenth valve cartridges are directional valve cartridges.

8. The stretcher linkage control system of claim 6 wherein the third, fourth, and twelfth valve cartridges are pressure valve cartridges.

Technical Field

The invention relates to the technical field of stretcher control, in particular to a stretcher linkage control system.

Background

At present, a traditional stretcher control system (a hydraulic control system of a stretcher) generally comprises a main cylinder rapid descending module, a main cylinder slow pressurizing module, a pressure relief module, a main cylinder return module, a top cylinder ejection module and a top cylinder resetting module. The main cylinder rapid descending module is used for executing main cylinder rapid descending action, the main cylinder slow pressurizing module is used for executing main cylinder slow pressurizing action, the pressure releasing module is used for executing pressure releasing action, the main cylinder return module is used for executing main cylinder return action, the cylinder ejecting module is used for executing cylinder ejecting action, and the cylinder ejecting resetting module is used for executing cylinder ejecting resetting action. In order to improve the processing efficiency, a hydraulic manufacturer generally adopts a mode of increasing the drift diameter specification of a descending cartridge valve or increasing a quick cylinder, but the two modes increase the design cost to different degrees, the higher the descending speed is, the larger the impact of a hydraulic system is, the unstable operation of the system is, particularly in large-scale stretcher equipment with large tonnage, the feasible space for further improving the processing efficiency by only increasing the drift diameter specification of the descending cartridge valve and increasing the quick cylinder is not too large, because the equipment cost of the large-tonnage high-efficiency stretcher obtained by increasing the drift diameter specification of the descending cartridge valve and increasing the quick cylinder is extremely high, and the equipment is difficult to be widely applied.

In summary, there is a need in the art for a new stretcher control system that achieves an increase in processing efficiency while achieving a very low cost.

Disclosure of Invention

The invention aims to provide a stretcher linkage control system which has extremely low cost while improving the processing efficiency.

In order to achieve the purpose, the invention provides the following scheme:

a stretcher linkage control system comprising:

the master cylinder rapid descending module is used for executing the master cylinder rapid descending action;

the main cylinder slow pressurizing module is connected with the main cylinder fast descending module and is used for executing the main cylinder slow pressurizing action after executing the main cylinder fast descending action;

the pressure relief module is connected with the master cylinder slow pressurization module and is used for executing pressure relief action after executing master cylinder slow pressurization action;

the main cylinder return and ejection linkage module is connected with the pressure relief module and is used for simultaneously executing main cylinder return action and ejection action of the ejection cylinder after executing pressure relief action;

and the jacking cylinder resetting module is connected with the main cylinder return stroke and jacking cylinder ejection linkage module and is used for executing the jacking cylinder resetting action after executing the main cylinder return stroke action and the jacking cylinder ejection action.

Optionally, the master cylinder rapid descending module specifically comprises a first solenoid valve, a third solenoid valve, a ninth solenoid valve, a tenth solenoid valve, a motor pump group, a second cartridge valve group, a third cartridge valve group, a fourth cartridge valve group and a fifth cartridge valve group;

the fourth plug-in valve group and the fifth plug-in valve group are connected with the motor-pump group; the second valve plug-in mounting group is connected with the third valve plug-in mounting group; the third valve plug-in mounting group is connected with the fourth valve plug-in mounting group; the fourth plug-in valve group is connected with an oil tank; the fifth plug-in valve group is connected with a quick cylinder in the main cylinder; the second plug-in valve group is connected with a main cylinder lower cavity in the main cylinder;

the first electromagnetic valve is connected with the fourth cartridge valve group; the ninth electromagnetic valve is connected with the second cartridge valve group; the tenth electromagnetic valve is connected with the third cartridge valve group; the third electromagnetic valve is connected with the fifth cartridge valve group;

when the first solenoid valve, the third solenoid valve, the ninth solenoid valve and the tenth solenoid valve are electrified, the fourth valve cartridge, the fifth valve cartridge, the second valve cartridge and the third valve cartridge are opened; high-pressure oil of the motor pump set enters the quick cylinder through the fifth cartridge valve group to push a main cylinder piston rod in the main cylinder to quickly move downwards, and meanwhile, oil in a main cylinder lower cavity passes through the second cartridge valve group, the third cartridge valve group and the fourth cartridge valve group oil return box to enable the main cylinder to quickly move close to a workpiece and execute quick descending action of the main cylinder.

Optionally, the master cylinder slow pressurizing module specifically comprises a fourth solenoid valve and a sixth cartridge valve group;

the fourth electromagnetic valve is connected with the sixth plug-in valve group; the sixth plug-in valve group is respectively connected with the fifth plug-in valve group and a main cylinder upper cavity in a main cylinder;

when the first solenoid valve, the third solenoid valve, the fourth solenoid valve, the ninth solenoid valve and the tenth solenoid valve are electrified, the fourth valve cartridge, the fifth valve cartridge, the sixth valve cartridge, the second valve cartridge and the third valve cartridge are opened; one part of high-pressure oil of the motor pump set enters the quick cylinder through the fifth cartridge valve group, the other part of the high-pressure oil of the motor pump set enters the main cylinder upper cavity through the sixth cartridge valve group, and simultaneously the oil of the main cylinder lower cavity passes through the second cartridge valve group, the third cartridge valve group and the fourth cartridge valve group and continues to return to the oil tank, so that the volume of the main cylinder upper cavity is increased, the operating speed of a main cylinder piston rod is reduced until the main cylinder piston rod contacts a workpiece, the pressure in the main cylinder is increased, and the main cylinder is slowly pressurized.

Optionally, the pressure relief module specifically comprises a second solenoid valve, a fifth solenoid valve and a seventh cartridge valve group;

the second electromagnetic valve is connected with the fourth cartridge valve group; the fifth electromagnetic valve is connected with the seventh plug-in valve group; the seventh plug-in valve group is respectively connected with the quick cylinder, the third plug-in valve group and an oil tank;

when the first solenoid valve, the third solenoid valve, the fourth solenoid valve, the ninth solenoid valve and the tenth solenoid valve are powered off, the fourth valve cartridge, the fifth valve cartridge, the sixth valve cartridge, the second valve cartridge and the third valve cartridge are closed;

when the second electromagnetic valve and the fifth electromagnetic valve are electrified, the seventh plug-in valve group is opened; and the oil in the upper cavity of the main cylinder passes through the oil return box of the seventh plug-in valve group, so that the pressure in the upper cavity of the main cylinder is reduced to a set pressure, and the pressure relief action is executed.

Optionally, the master cylinder return and top cylinder ejection linkage module specifically comprises a sixth solenoid valve, a seventh solenoid valve, an eighth solenoid valve, a first valve cartridge, an eighth valve cartridge and a charging valve;

the sixth electromagnetic valve is connected with the liquid charging valve; the seventh electromagnetic valve is connected with the eighth cartridge valve group; the eighth plug-in valve group is respectively connected with the top cylinder lower cavity in the quick cylinder and the top cylinder; the eighth electromagnetic valve is connected with the first cartridge valve group; the first plug-in valve group is respectively connected with the motor-pump group and the second plug-in valve group;

after the pressure in the upper cavity of the master cylinder is reduced to the set pressure, the eighth solenoid valve and the ninth solenoid valve are electrified, and the first plug-in valve group and the second plug-in valve group are opened; oil of the motor-pump set enters the lower cavity of the main cylinder through the first plug-in valve group and the second plug-in valve group, and a piston rod of the main cylinder rises; when the sixth electromagnetic valve is electrified, the liquid filling valve is opened, oil in the upper cavity of the main cylinder directly returns to the oil tank through the liquid filling valve to execute return motion of the main cylinder, at the moment, the seventh electromagnetic valve is electrified, the eighth plug-in valve group is opened, and the oil in the quick cylinder enters the lower cavity of the jacking cylinder through the eighth plug-in valve group to push out a workpiece and execute jacking motion of the jacking cylinder.

Optionally, the top cylinder resetting module specifically comprises a twelfth solenoid valve, a tenth cartridge valve group and a twelfth cartridge valve group;

the twelfth electromagnetic valve is connected with the tenth cartridge valve group; the tenth plug-in valve group is respectively connected with the motor pump group and a top cylinder upper cavity in a top cylinder; the twelfth plug-in valve group is respectively connected with the lower cavity of the top cylinder and the oil tank;

when the twelfth electromagnetic valve is electrified, the tenth plug-in valve group is opened, and oil of the motor-pump group enters the upper cavity of the top cylinder through the tenth plug-in valve group; when the seventh electromagnetic valve is powered off, the oil in the lower cavity of the top cylinder passes through the oil return box of the twelfth cartridge valve group, the top cylinder moves downwards, and the top cylinder is reset.

Optionally, the first valve cartridge group, the second valve cartridge group, the fifth valve cartridge group, the sixth valve cartridge group, the seventh valve cartridge group, the eighth valve cartridge group, and the tenth valve cartridge group are directional valve cartridge groups.

Optionally, the third cartridge valve group, the fourth cartridge valve group and the twelfth cartridge valve group are pressure cartridge valve groups.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects:

the linkage control system of the stretcher disclosed by the invention is provided with the main cylinder return stroke and ejection linkage module which is respectively connected with the pressure relief module and the ejection resetting module, so that after pressure relief action is executed and before the ejection resetting action is executed, main cylinder return stroke action and ejection action are simultaneously executed, namely, main cylinder return stroke and ejection action are carried out in linkage, the auxiliary process time of equipment is shortened, the processing efficiency is improved, oil in a quick cylinder is recycled, the energy consumption is reduced, and because only one main cylinder return stroke and ejection linkage module is arranged to simultaneously execute main cylinder return stroke action and ejection action, the processing efficiency is improved and the cost is extremely low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a block diagram of an embodiment of a stretcher linkage control system according to the present invention;

fig. 2 is a schematic diagram of a stretcher linkage control system according to an embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a stretcher linkage control system which has extremely low cost while improving the processing efficiency.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

FIG. 1 is a block diagram of an embodiment of a stretcher linkage control system according to the present invention. Referring to fig. 1, the linkage control system of the stretching machine comprises a main cylinder quick descending module 101, a main cylinder slow pressurizing module 102, a pressure relief module 103, a main cylinder return and top cylinder ejection linkage module 104 and a top cylinder resetting module 105.

The master cylinder quick-descent module 101 is configured to perform a master cylinder quick-descent operation. The master cylinder slow pressurizing module 102 is connected with the master cylinder fast descending module 101, and the master cylinder slow pressurizing module 102 is used for executing the master cylinder slow pressurizing action after executing the master cylinder fast descending action. The pressure relief module 103 is connected to the master cylinder slow pressurization module 102, and the pressure relief module 103 is configured to perform a pressure relief operation after performing a master cylinder slow pressurization operation. The main cylinder return and ejection linkage module 104 is connected with the pressure relief module 103, and the main cylinder return and ejection linkage module 104 is used for simultaneously executing main cylinder return action and ejection action after executing pressure relief action. The top cylinder resetting module 105 is connected with the main cylinder return and top cylinder ejection linkage module 104, and the top cylinder resetting module 105 is used for executing top cylinder resetting after executing main cylinder return action and top cylinder ejection action.

Fig. 2 is a schematic diagram of a stretcher linkage control system according to an embodiment of the invention. Referring to fig. 2, the master cylinder fast descending module 101 specifically includes a first solenoid valve YA1, a third solenoid valve YA3, and a ninth solenoid valve YA9Tenth solenoid valve YA10, motor-pump setA second valve set, a third valve set, a fourth valve set and a fifth valve set.

The fourth valve set and the fifth valve set are connected with the motor-pump setConnecting; the second plug-in valve group II is connected with the third plug-in valve group III; the third valve set is connected with the fourth valve set; the fourth plug-in valve group IV is connected with an oil tank; the fifth plug-in valve group is connected with a quick cylinder in the main cylinder; and the second plug-in valve group II is connected with a main cylinder lower cavity in the main cylinder.

The first electromagnetic valve YA1 is connected with the fourth valve cartridge group IV; the ninth electromagnetic valve YA9 is connected with the second cartridge valve group II; the tenth electromagnetic valve YA10 is connected with the third cartridge valve group III; the third electromagnetic valve YA3 is connected with the fifth valve cartridge group.

When the first solenoid valve YA1, the third solenoid valve YA3, the ninth solenoid valve YA9 and the tenth solenoid valve YA10 are electrified, the fourth valve cartridge (IV), the fifth valve cartridge (V), the second valve cartridge (III) and the third valve cartridge (III) are opened; motor pump unitThe high-pressure oil enters the quick cylinder through the fifth cartridge valve group fifthly to push a main cylinder piston rod in the main cylinder to quickly descend, and meanwhile, the oil in the lower cavity of the main cylinder passes through the second cartridge valve group, the third cartridge valve group and the fourth cartridge valve group, namely the oil return tank, so that the main cylinder can quickly move close to a workpiece to execute the quick descending action of the main cylinder.

The master cylinder slow pressurizing module 102 specifically comprises a fourth solenoid valve YA4 and a sixth plug-in valve group.

The fourth electromagnetic valve YA4 is connected with a sixth plug-in valve group; the sixth valve set is connected to the fifth valve set and the upper cavity of the main cylinder.

The first electromagnetic valve YA1, the third electromagnetic valve YA3 and the fourth electromagnetic valveWhen the YA4, the ninth electromagnetic valve YA9 and the tenth electromagnetic valve YA10 are electrified, the fourth valve cartridge (the fourth valve cartridge), the fifth valve cartridge (the fifth valve cartridge), the sixth valve cartridge, the second valve cartridge (the sixth valve cartridge) and the third valve cartridge (the third valve cartridge) are opened; motor pump unitPart of the high-pressure oil enters the quick cylinder through a fifth cartridge valve group, and the motor-pump unitThe other part of the high-pressure oil enters the upper cavity of the main cylinder through the sixth plug-in valve group, and meanwhile, the oil in the lower cavity of the main cylinder continues to return to the oil tank through the second plug-in valve group, the third plug-in valve group and the fourth plug-in valve group, so that the volume of the upper cavity of the main cylinder is increased, the operating speed of a piston rod of the main cylinder is reduced until the piston rod of the main cylinder contacts a workpiece, the pressure in the main cylinder is increased, and the slow pressurization action of the main cylinder is executed.

The pressure relief module 103 specifically includes a second solenoid valve YA2, a fifth solenoid valve YA5, and a seventh valve bank.

The second electromagnetic valve YA2 is connected with the fourth valve cartridge group IV; the fifth electromagnetic valve YA5 is connected with a seventh cartridge valve group; and the seventh plug-in valve group is connected with the quick cylinder, the third plug-in valve group and the oil tank respectively.

When the first solenoid valve YA1, the third solenoid valve YA3, the fourth solenoid valve YA4, the ninth solenoid valve YA9 and the tenth solenoid valve YA10 are powered off, the fourth valve cartridge (IV), the fifth valve cartridge (V), the sixth valve cartridge (VI), the second valve cartridge (II) and the third valve cartridge (III) are closed.

When the second electromagnetic valve YA2 and the fifth electromagnetic valve YA5 are electrified, the seventh cartridge valve group is opened; the oil in the upper cavity of the main cylinder returns to the oil tank through the seventh cartridge valve group, so that the pressure in the upper cavity of the main cylinder is reduced to a set pressure, and the pressure relief action is executed.

The master cylinder return and top cylinder ejection linkage module 104 specifically comprises a sixth electromagnetic valve YA6, a seventh electromagnetic valve YA7, an eighth electromagnetic valve YA8, a first valve cartridge group (I), an eighth valve cartridge group (III) and a liquid filling valve.

The sixth electromagnetic valve YA6 is connected with the liquid filling valve; seventh solenoid valve YA7 and eighth cartridgeConnecting a valve group; the eighth plug-in valve group is respectively connected with the top cylinder lower cavity in the quick cylinder and the top cylinder; the eighth electromagnetic valve YA8 is connected with the first cartridge valve group I; the first inserted valve group is respectively connected with the motor-pump groupAnd the second plug-in valve group II is connected.

After the pressure in the upper cavity of the master cylinder is reduced to the set pressure, the eighth electromagnetic valve YA8 and the ninth electromagnetic valve YA9 are electrified, and the first cartridge valve group I and the second cartridge valve group II are opened; motor pump unitThe oil enters a lower cavity of the main cylinder through a first plug-in valve group and a second plug-in valve group, and a piston rod of the main cylinder rises; when the sixth electromagnetic valve YA6 is electrified, the liquid filling valve is opened, oil in the upper cavity of the main cylinder directly returns to the oil tank through the liquid filling valve to execute the return action of the main cylinder, at the moment, the seventh electromagnetic valve YA7 is electrified, the eighth cartridge valve group (b) is opened, oil in the quick cylinder enters the lower cavity of the top cylinder through the eighth cartridge valve group (b), so that a workpiece is ejected, and the ejection action of the top cylinder is executed.

Top cylinder reset module 105 specifically includes a twelfth solenoid valve YA12, a tenth cartridge valve group R, and a twelfth cartridge valve group

Twelfth solenoid valve YA12 is connected to tenth cartridge valve group R; tenth plug-in valve group r respectively with motor-pump groupThe upper cavity of the top cylinder is connected with the upper cavity of the top cylinder; twelfth plug-in valve setRespectively connected with the lower cavity of the top cylinder and the oil tank.

When the twelfth electromagnetic valve YA12 is energized, the tenth valve plug-in set is opened, the motor-pump setThe oil enters the upper cavity of the top cylinder through the third plug-in valve group (R); when the seventh electromagnetic valve YA7 is powered off, oil in the lower cavity of the top cylinder passes through the twelfth cartridge valve groupAnd the oil return box moves downwards to execute the resetting action of the top cylinder.

The first valve plug-in valve group, the second valve plug-in valve group, the fifth valve plug-in valve group, the sixth valve plug-in valve group, the seventh valve plug-in valve group, the eighth valve plug-in valve group and the tenth valve plug-in valve group are directional valve plug-in valve groups.

Third, fourth and twelfth valve setsAll are pressure cartridge valve sets.

The master cylinder return and top cylinder ejection linkage module 104 further includes a first check valve, a second check valve, and a shuttle valve. The first one-way valve is respectively connected with the quick cylinder and the seventh electromagnetic valve. The second one-way valve is respectively connected with the motor pump groupAnd the seventh electromagnetic valve YA 7. The shuttle valve is respectively connected with a seventh solenoid valve YA7 and an eighth valve plug assembly group (B).

The technical solution of the present invention is illustrated by a specific example below:

the invention relates to a stretcher linkage control system, which is a novel efficient stretcher linkage control system and comprises 1 three-position four-way electromagnetic valve (a first electromagnetic valve YA1 and a second electromagnetic valve YA2 jointly form 1 three-position four-way electromagnetic valve), 10 two-position four-way electromagnetic valves (a third electromagnetic valve YA3, a fourth electromagnetic valve YA4, a fifth electromagnetic valve YA5, a sixth electromagnetic valve YA6, a seventh electromagnetic valve YA7, an eighth electromagnetic valve YA8, a ninth electromagnetic valve YA9, a tenth electromagnetic valve YA10, an eleventh electromagnetic valve YA11 and a twelfth electromagnetic valve YA12), 1 electromagnetic ball valve, 1 shuttle valve, 9 directional valve groups (a first valve group, a second valve group, a fifth valve group, a sixth valve group, a seventh valve groupValve set (c), eighth plug-in valve set (b), tenth plug-in valve set (r), 3 pressure valve sets (c), fourth plug-in valve set (c) and twelfth plug-in valve set (c)) 2 direct-acting overflow valves, 1 pressure relay and 2 pressure gauges. This novel high-efficient stretcher coordinated control system has 6 work hydraulic fluid ports: the oil inlet of pump is communicated with valve set in direction of R, C1 and R and pressure valve set. The master cylinder plug cavity is communicated with the directional valve group. The master cylinder rod cavity is communicated with the direction valve group. The quick cylinder is communicated with the fifth and the fifth 0 direction valve sets. A top cylinder plug cavity and an (a) and (a) direction valve group,The pressure valve group is communicated. Top cylinder rod cavity and cavity,The direction valve set is communicated. One end of the double-cylinder linkage control valve group is communicated with the quick cylinder, the other end of the double-cylinder linkage control valve group is communicated with the top cylinder, and the opening and closing of the double-cylinder linkage control valve group are controlled through the electromagnetic valve, so that double-cylinder linkage work is realized. The system pressure is designed into a high-pressure low-pressure two-way system, and can be respectively adjusted to realize different pressures required by different actions, and the safety protection function with pressure signaling is realized.

The novel efficient stretcher linkage control system can realize six reliable actions of quick descending, slow pressurizing, pressure releasing, main cylinder return stroke, top cylinder ejection and top cylinder resetting of stretcher equipment, wherein the main cylinder return stroke and the top cylinder ejection are performed in a linkage manner.

Fig. 2 shows the hydraulic control principle of the linkage control system of the novel high-efficiency drawing machine. In FIG. 2, ninthly andall show a direction cartridge valve group,a two-position four-way solenoid valve is shown,a three-position four-way solenoid valve is shown,a direct-acting type overflow valve is shown,referring to fig. 2, the working principle of each process of the novel efficient stretcher linkage control system is as follows:

a main cylinder rapid descending process: the electromagnets of YA1, YA3, YA9, YA10 were energized. Motor pump unitThe high-pressure oil enters the quick cylinder through the direction valve group fifthly, the piston rod of the main cylinder is pushed to descend quickly, and meanwhile, the oil in the lower cavity of the main cylinder passes through the direction valve group II and the pressure valve group III to return to the oil tank, so that the oil cylinder moves quickly to be close to a workpiece, and the fast-forward process is realized. The pressure relay plays a role in pressure signaling safety protection, and the next procedure can be carried out after the pressure relay reaches the set pressure signaling.

Main cylinder slow pressurizing process: when the pressure relay reaches the set pressure to send a signal, the electromagnets of YA1, YA3, YA4, YA9 and YA10 are electrified, and the motor-pump setPart of the high-pressure oil enters the outside of the quick cylinder through the direction valve group fifthly, the other part of the high-pressure oil enters the upper cavity of the main cylinder through the direction valve group sixthly, and meanwhile, the oil in the lower cavity of the main cylinder continues to return to the oil tank through the direction valve group II and the pressure valve group III; because the volume of the upper cavity of the main cylinder is increased, the running speed of the piston of the oil cylinder is reduced until the piston contacts with a workpiece, the pressure in the oil cylinder is increased, and the slow pressurizing process is realized.

A pressure relief process: after the workpiece is stretched and formed, the electromagnets of YA1, YA3, YA4, YA9 and YA10 are powered off, the electromagnets of YA2 and YA5 are powered on, the directional valve groups are closed, the directional valve groups are opened, oil in the upper cavity of the main cylinder returns to the oil tank through the directional valve groups, the internal pressure of the upper cavity of the main cylinder is reduced to a set pressure, and preparation is made for the next return process.

The main cylinder return stroke and top cylinder ejection linkage process comprises the following steps: after the internal pressure of the upper cavity of the main cylinder is reduced to the set pressure, the pressure relay sends a signal, the electromagnets YA8 and YA9 are electrified, the direction valve group (I) and the direction valve group (II) are opened, and the motor pump groupThe oil enters the lower cavity of the main cylinder through the first and second directional valve groups, and the piston rod rises. The electromagnet of YA6 is electrified, the liquid filling valve is opened, the oil in the upper cavity of the main cylinder directly returns to the oil tank through the liquid filling valve, and returns to the main cylinder. At the moment, the electromagnet of YA7 is electrified, the directional valve group is opened, the oil in the quick cylinder enters the lower cavity of the ejection cylinder through the directional valve group, so that the workpiece is ejected, namely, the main cylinder return stroke and the ejection of the ejection cylinder are carried out in a linkage manner, the auxiliary process time of the equipment is shortened, the processing efficiency is improved, the oil in the quick cylinder is recycled, and the energy consumption is reduced.

A top cylinder resetting procedure: YA12 electromagnet is energized, direction valve group is opened, motor-pump groupThe oil enters the upper cavity of the top cylinder through the direction valve group (R). YA7 electromagnet is powered off, and oil in the lower cavity of the top cylinder passes through the pressure valve groupAnd returning the oil tank, and moving the top cylinder downwards to complete the resetting process.

The novel efficient stretcher linkage control system has the advantages that: the operation control is accurate and simple, the work is more stable and reliable, the efficiency is high, the energy consumption is saved, the equipment manufacturing cost is reduced, the integration level is high, and the device is widely applied to high-efficiency stretcher equipment with larger tonnage.

The invention discloses a novel high-efficiency stretcher linkage control system, which is a novel high-efficiency stretcher linkage control system with a cartridge valve structure and is suitable for large-tonnage high-efficiency stretcher equipment. This novel high-efficient stretcher coordinated control system adopts the cartridge valve, the solenoid valve is integrated together, with opening and closing of solenoid valve control cartridge valve, when making the main cylinder return stroke, the oil of quick jar no longer returns the oil tank, directly get back to the top jar, make main cylinder return stroke and the ejecting linkage of top jar go on, equipment auxiliary process time has not only been shortened, machining efficiency has been improved, and make the oil in the quick jar obtain the recovery and recycle, reduce the energy consumption, its compact structure, energy-concerving and environment-protective, flexible operation, the controllability is better, the reliability is higher, shock-resistant, long service life is longer, and the easy maintenance.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.