CN213839074U - High-low pressure matched multipurpose punching cylinder - Google Patents

Abstract

The utility model relates to a hydraulic pressure field especially relates to a high-low pressure complex multipurpose jar that punches a hole. The punching cylinder (10) comprises a cylinder body (113), the cylinder body (113) is cylindrical, the cylinder body (113) is fixedly provided with a fixed cylinder (115) through a fixing bolt (114), the fixed cylinder (115) comprises a first oil inlet (111), a piston can be extruded from a first action surface (118) below the first oil inlet (111), the fixed cylinder (115) can be matched with the position of a groove of the extruded piston, the cylinder body (113) comprises a second oil inlet (112), and the second oil inlet (112) leads to the annular surface (117) of the extruded piston. The application of the high-low pressure switching valve of the utility model of the patent; secondly, the oil circuit adopts the application of a differential circuit; and finally, a plurality of oil return pipelines are applied to reduce oil return resistance.

Description

High-low pressure matched multipurpose punching cylinder

Technical Field

The utility model relates to a hydraulic pressure field especially relates to a high-low pressure complex multipurpose jar that punches a hole.

Background

The longitudinal beam processing for the automobile chassis mainly depends on an automobile longitudinal beam hydraulic three-face punch press to realize three-face punching of the web face and the airfoil face of the channel steel, each longitudinal beam is 12 meters, and 350 holes are formed in total for punching and forming, so that the efficiency is improved to be more important.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is that: in order to provide a multipurpose punching cylinder and a punching method with better high-low pressure matching, the specific aim is to see a plurality of substantial technical effects of the specific implementation part.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the first scheme is as follows:

a multipurpose punching cylinder matched with high pressure and low pressure is characterized in that the punching cylinder 10 comprises a cylinder body 113, the cylinder body 113 is cylindrical, the cylinder body 113 is fixedly provided with a fixed cylinder 115 through a fixing bolt 114, the fixed cylinder 115 comprises a first oil inlet 111, a piston can be pressed from a first action surface 118 below the first oil inlet 111, the fixed cylinder 115 can be matched with the position of a groove of the pressed piston, the cylinder body 113 comprises a second oil inlet 112, and the second oil inlet 112 leads to the annular surface 117 of the pressed piston.

The utility model discloses a further technical scheme lies in, cylinder body 113 below is fixing piston sleeve 116 through fixing bolt 114, and the extrusion piston can carry out the piston motion in piston sleeve 116.

The utility model discloses a further technical scheme lies in, and the below of extrusion piston and the inner wall of cylinder body 113 contain the space, contain oil return 119 on the cylinder body 113, the directional space of oil return 119.

The utility model discloses a further technical scheme lies in, and the space comprises piston bush 116, piston, cylinder body 113.

The utility model has the further technical proposal that two oil paths are extended from the duplex pump, and the two oil paths are respectively a high-pressure oil pipe Ph and a low-pressure oil pipe PL; a pipeline Ph of the high-pressure oil pipe is connected with a first electromagnetic valve 3 and a first cartridge valve 5 and then connected with a punching cylinder 10, and the Ph of the high-pressure oil pipe is also connected with a pressure switching valve 7 and a punching main valve 8; the low-pressure oil pipe PL is connected with the pressure switching valve 7 after being connected with the one-way valve 1, the punching main valve 8 is connected with the punching cylinder 10, the electromagnetic valve II 4 and the cartridge valve II 6 are connected with the low-pressure oil pipe PL, and the cartridge valve II 6 is also communicated with a return pipe I T1, a return pipe II T2, a return pipe III T3 and a return pipe IV T4; the first return pipe T1, the second return pipe T2, the third return pipe T3 and the fourth return pipe T4 are connected with the oil suction pipe 14.

Scheme II:

the hydraulic valve oil circuit capable of automatically switching high pressure and low pressure is characterized in that two oil circuits extend out of a duplex pump, and the two oil circuits are a high-pressure oil pipe Ph and a low-pressure oil pipe PL respectively; a pipeline Ph of the high-pressure oil pipe is connected with a first electromagnetic valve 3 and a first cartridge valve 5 and then connected with a punching cylinder 10, and the Ph of the high-pressure oil pipe is also connected with a pressure switching valve 7 and a punching main valve 8; the low-pressure oil pipe PL is connected with the pressure switching valve 7 after being connected with the one-way valve 1, the punching main valve 8 is connected with the punching cylinder 10, the electromagnetic valve II 4 and the cartridge valve II 6 are connected with the low-pressure oil pipe PL, and the cartridge valve II 6 is also communicated with a return pipe I T1, a return pipe II T2, a return pipe III T3 and a return pipe IV T4; the first return pipe T1, the second return pipe T2, the third return pipe T3 and the fourth return pipe T4 are connected with the oil suction pipe 14.

The utility model discloses a further technical scheme lies in, and high pressure fuel pipe Ph is connecting high-pressure accumulator 2-1.

The utility model discloses a further technical scheme lies in, low pressure oil pipe PL is connecting low pressure energy storage ware 2-2.

The utility model discloses a further technical scheme lies in, 8 communication connection electro-hydraulic pilot valve 9 of main valve that punches a hole.

The utility model discloses a further technical scheme lies in, check valve 1, high pressure energy storage ware 2-1, low pressure energy storage ware 2-2, solenoid valve 3, two 4 and cartridge valve 5, cartridge valve 6 are installed on a valve plate.

Adopt above technical scheme the utility model discloses, for prior art have following beneficial effect: compared with the common hydraulic transmission loop, the loop has the main advantages of high punching frequency, large blanking force and high production efficiency. Firstly, the utility model is applied to the high-low pressure switching valve; secondly, the oil circuit adopts the application of a differential circuit; and finally, a plurality of oil return pipelines are applied to reduce oil return resistance. As a schematic diagram, power is provided by a high-pressure oil circuit and a low-pressure oil circuit. The low-pressure oil directly enters the lower cavity of the main punching oil cylinder through the energy accumulator, an electromagnetic valve at one end of an electro-hydraulic valve is electrified during idle stroke, the low-pressure oil enters the upper cavity of the oil cylinder through a port P of the electro-hydraulic valve, and a differential circuit is formed, so that the oil cylinder is quickly close to a workpiece; when the workpiece is contacted, the one-way valve reversely cuts off the low-pressure channel, the pressure of the system rises to punch the workpiece, the high pressure and the low pressure are automatically switched along with the change of the load, the differential loop is automatically cancelled by the system along with the increase of the load, and the large blanking force can be obtained. The lower cavity of the oil cylinder is directly communicated with the low pressure and is connected with an energy accumulator in parallel, the energy accumulator is used for quick return of the system, quick oil supplement is carried out on the upper cavity of the oil cylinder when the differential circuit punches a hole, and the oil cylinder is buffered in the descending process, so that the piston is prevented from striking the bottom of the cylinder to reduce the failure rate.

Drawings

For further explanation of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings:

FIG. 1 is a schematic diagram of the utility model;

FIG. 2 is a schematic view of a dual pump;

FIG. 3 is a schematic view of a high and low pressure valve mounting structure;

FIG. 4 is a second schematic view of the high and low pressure valve mounting structure;

FIG. 5 is a schematic view of the inner structure of the punching cylinder;

FIG. 6 is a schematic view of the outer structure of the punching cylinder;

1. a one-way valve; 2. an accumulator; 2-1, a high pressure accumulator; 2-2. a low pressure accumulator; 3. a first electromagnetic valve; 4. a second electromagnetic valve; 5. a first cartridge valve; 6. a cartridge valve II; 7. a pressure switching valve; 8. a punching main valve; 9, an electrohydraulic pilot valve; 10. a punching cylinder; 11. a monobloc piston; t1 loop I; t2 return pipe II; pipe III of T3; t4 return pipe IV; ph. high pressure oil lines; PL; a low pressure oil pipe; 12, an electric motor; 13. a tandem pump; 14. an oil suction pipe; 15. a low pressure oil port; 16. a high-pressure oil port; 111, a first oil inlet; 112. an oil inlet II; 113. a cylinder body; 114. fixing the bolt; 115. a fixed cylinder; 116. a piston sleeve.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The patent provides a plurality of parallel schemes, and different expressions belong to an improved scheme based on a basic scheme or a parallel scheme. Each solution has its own unique features. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other. The fixing means, which is not described herein, may be any one of screw fixing, bolt fixing, or glue bonding.

The first embodiment is as follows: with reference to all of the accompanying drawings; the first scheme is as follows:

a multipurpose punching cylinder matched with high pressure and low pressure is characterized in that the punching cylinder 10 comprises a cylinder body 113, the cylinder body 113 is cylindrical, the cylinder body 113 is fixedly provided with a fixed cylinder 115 through a fixing bolt 114, the fixed cylinder 115 comprises a first oil inlet 111, a piston can be pressed from a first action surface 118 below the first oil inlet 111, the fixed cylinder 115 can be matched with the position of a groove of the pressed piston, the cylinder body 113 comprises a second oil inlet 112, and the second oil inlet 112 leads to the annular surface 117 of the pressed piston. The technical scheme of the invention has the following substantial technical effects and the realization process: in the process of realizing, an independent oil inlet import, pressure is less, and when two oil inlets oil feed simultaneously, realize compound acting.

Example two: as a further improvement or in parallel or alternatively independently, a piston sleeve 116 is fixed below the cylinder 113 by means of a fixing screw 114, and the pressing piston can perform a piston movement in the piston sleeve 116. The technical scheme of the invention has the following substantial technical effects and the realization process: this embodiment provides a preferred construction, in essence, the piston sleeve 116 can be made integral with the cylinder 113, but in this case the piston is not replaceable; the detachable connection is made in this embodiment, and the piston inside can be replaced.

Example three: as a further development or in parallel or alternatively independently, the lower side of the pressure piston and the inner wall of the cylinder 113 comprise a gap, the cylinder 113 comprises a return opening 119, and the return opening 119 is directed towards the gap. The technical scheme of the invention has the following substantial technical effects and the realization process: the oil return opening points to the gap to realize resetting.

Example four: as a further development, either in parallel or alternatively independently, the interspace is formed by the piston sleeve 116, the piston, and the cylinder 113.

Example five: as a further improved scheme or a parallel scheme or a selectable independent scheme, two oil paths extend out of the duplex pump, and the two oil paths are a high-pressure oil pipe Ph and a low-pressure oil pipe PL respectively; a pipeline Ph of the high-pressure oil pipe is connected with a first electromagnetic valve 3 and a first cartridge valve 5 and then connected with a punching cylinder 10, and the Ph of the high-pressure oil pipe is also connected with a pressure switching valve 7 and a punching main valve 8; the low-pressure oil pipe PL is connected with the pressure switching valve 7 after being connected with the one-way valve 1, the punching main valve 8 is connected with the punching cylinder 10, the electromagnetic valve II 4 and the cartridge valve II 6 are connected with the low-pressure oil pipe PL, and the cartridge valve II 6 is also communicated with a return pipe I T1, a return pipe II T2, a return pipe III T3 and a return pipe IV T4; the first return pipe T1, the second return pipe T2, the third return pipe T3 and the fourth return pipe T4 are connected with the oil suction pipe 14.

Scheme II:

example six: as a further improved scheme or a parallel scheme or a selectable independent scheme, the hydraulic valve oil circuit capable of automatically switching high pressure and low pressure is characterized in that two oil circuits extend out of a duplex pump, and the two oil circuits are a high-pressure oil pipe Ph and a low-pressure oil pipe PL respectively; a pipeline Ph of the high-pressure oil pipe is connected with a first electromagnetic valve 3 and a first cartridge valve 5 and then connected with a punching cylinder 10, and the Ph of the high-pressure oil pipe is also connected with a pressure switching valve 7 and a punching main valve 8; the low-pressure oil pipe PL is connected with the pressure switching valve 7 after being connected with the one-way valve 1, the punching main valve 8 is connected with the punching cylinder 10, the electromagnetic valve II 4 and the cartridge valve II 6 are connected with the low-pressure oil pipe PL, and the cartridge valve II 6 is also communicated with a return pipe I T1, a return pipe II T2, a return pipe III T3 and a return pipe IV T4; the first return pipe T1, the second return pipe T2, the third return pipe T3 and the fourth return pipe T4 are connected with the oil suction pipe 14. The technical scheme of the invention has the following substantial technical effects and the realization process: in order to increase the punching speed, increasing the number of return oil pipelines by the first return pipe T1, the second return pipe T2, the third return pipe T3 and the fourth return pipe T4 is also an effective measure for increasing the speed. Starting an oil pump motor, enabling high pressure and low pressure to reach set pressure, enabling one path of oil of a low-pressure oil way to reach a lower cavity of the oil cylinder through a low-pressure oil pipe PL, enabling the other path of oil to be communicated with a port P of a punching main valve 8 through a one-way valve 1, enabling the punching main valve to be in an upper working position of three working positions under the action of a spring, enabling the main oil cylinder to return to the topmost position, and waiting for an operation instruction. When the first pilot valve YV5 is electrified, the main valve is in the middle working position, the oil cylinder descends, and the oil cylinder is kept at the preset working position upper position under the action of the air cylinder. The high-pressure oil path is communicated with a P port of a punching main valve 8 through a pressure switching valve 7, when a pilot valve II YV4 is electrified, the lower part of the punching main valve works, one path of pressure oil enters an upper cavity of a small oil cylinder fixing oil cylinder through a cavity A of the punching main valve, the other path of pressure oil enters an annular oil cylinder through a cartridge valve II 6, and the maximum punching force is ensured at the moment. When the pilot valve YV4 and the cartridge valve II 6 are electrified simultaneously, all the punching main valve oil enters the upper cavity of the small oil cylinder, and the fastest punching frequency in sheet machining is met. When the load is gradually increased, the pressure of the upper cavity of the oil cylinder reaches the set pressure of the pressure switching valve 7, the upper end working position of the pressure switching valve 7 works at the moment, high-pressure oil is mixed with low pressure, and simultaneously, the high-pressure oil participates in blanking workpieces of the oil cylinder, so that the maximum blanking force of the system is ensured. When the thin-wall small hole is punched, the switching valve is kept disconnected, high-pressure oil cannot enter the upper cavity of the oil cylinder, and the motor only drives low-pressure oil to do work, so that the power is saved. The pilot valve III YV6 is a first electromagnetic valve 3 and controls the opening and closing of the cartridge valve I5; the pilot valve is four YV7 namely a second electromagnetic valve 4 which controls the opening and closing of the cartridge valve II 6; meanwhile, the cartridge valve II 6 is also an oil return valve.

Example seven: as a further development or in parallel or alternatively independently, the high-pressure line Ph is connected to a high-pressure accumulator 2-1.

Example eight: as a further development or in parallel or alternatively independently, the low pressure line PL is connected to the low pressure accumulator 2-2.

Example nine: as a further development or in parallel or alternatively independently, the punching main valve 8 is communicatively connected to an electro-hydraulic pilot valve 9.

Example ten: as a further improvement scheme or a parallel scheme or an optional independent scheme, the check valve 1, the high-pressure energy accumulator 2-1, the low-pressure energy accumulator 2-2, the solenoid valve I3, the solenoid valve II 4, the cartridge valve I5 and the cartridge valve II 6 are arranged on a valve plate.

Example eleven: as a further development, either in parallel or alternatively independently, the patent relates to the machining of a dedicated hydraulic circuit for a vehicle longitudinal beam. Compared with the common hydraulic transmission loop, the loop has the main advantages of high punching frequency, large blanking force and high production efficiency. Specifically, the following factors are mainly included: firstly, the utility model is applied to the high-low pressure switching valve; secondly, the oil circuit adopts the application of a differential circuit; and finally, a plurality of oil return pipelines are applied to reduce oil return resistance. As a schematic diagram, power is provided by a high-pressure oil circuit and a low-pressure oil circuit. The low-pressure oil directly enters the lower cavity of the main punching oil cylinder through the energy accumulator, an electromagnetic valve at one end of an electro-hydraulic valve is electrified during idle stroke, the low-pressure oil enters the upper cavity of the oil cylinder through a port P of the electro-hydraulic valve, and a differential circuit is formed, so that the oil cylinder is quickly close to a workpiece; when the workpiece is contacted, the one-way valve reversely cuts off the low-pressure channel, the pressure of the system rises to punch the workpiece, the high pressure and the low pressure are automatically switched along with the change of the load, the differential loop is automatically cancelled by the system along with the increase of the load, and the large blanking force can be obtained. The lower cavity of the oil cylinder is directly communicated with the low pressure and is connected with an energy accumulator in parallel, the energy accumulator is used for quick return of the system, quick oil supplement is carried out on the upper cavity of the oil cylinder when the differential circuit punches a hole, and the oil cylinder is buffered in the descending process, so that the piston is prevented from striking the bottom of the cylinder to reduce the failure rate.

By way of further illustration:

the motor drives the double pump, the high-pressure oil way PL is generated by a high-pressure outlet of a lower end cover of the double pump, and the low-pressure PL is generated by a low-pressure outlet of an upper end of the double pump.

The function of the pressure switching valve 7 is as described above, when the load pressure rises, the high-pressure oil path automatically opens the switching valve, so that the high-pressure oil enters the punching main valve P, and then enters the system to complete high-pressure punching, and the maximum punching force of the system is ensured.

The high-pressure oil way is used for acquiring high punching power, the low-pressure oil way completes punching no-load operation and quick return, hydraulic impact can be effectively controlled, vibration of a machine tool is prevented, heating is reduced, and mechanical faults are reduced.

A motor is used for driving a duplex pump to generate two pressure oil paths, and a pressure valve is used for generating two pressures.

The use of the tandem pump and the vertical installation of the motor, the immersion oil pump reduces the leakage point and effectively reduces the noise of the system as shown in fig. 2.

A plurality of valves are concentrated in the installation of a valve plate, and the structure is succinct compact.

High-low pressure differential circuit realizes high-efficient punching a hole, and check valve 1 realizes the selection of hydraulic circuit according to load change automation, realizes the differential circuit conversion, improves the efficiency of punching a hole.

It should be noted that the solution in this paragraph is at least a new type of intelligent multipurpose device, which is an individual capable of being sold independently, and the solutions in the lower paragraphs are all parallel solutions or improved solutions.

Creatively, the above effects exist independently, and the combination of the above results can be completed by a set of structure.

The electrical components in the document are all electrically connected with an external main controller and 220V mains supply, and the main controller can be a conventional known device controlled by a computer and the like.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims.

Claims (5)

1. The multipurpose punching cylinder is characterized in that the punching cylinder (10) comprises a cylinder body (113), the cylinder body (113) is cylindrical, the cylinder body (113) is fixedly provided with a fixed cylinder (115) through a fixing bolt (114), the fixed cylinder (115) comprises a first oil inlet (111), a piston can be extruded from a first action surface (118) below the first oil inlet (111), the fixed cylinder (115) can be matched with the position of a groove of the extruded piston, the cylinder body (113) comprises a second oil inlet (112), and the second oil inlet (112) leads to an annular surface (117) of the extruded piston.

2. A high and low pressure compatible multi-purpose punching cylinder according to claim 1, wherein a piston sleeve (116) is fixed below the cylinder body (113) by a fixing bolt (114), and the extruding piston can perform piston movement in the piston sleeve (116).

3. A high and low pressure compatible multipurpose pierce cylinder according to claim 2, wherein the lower side of the squeeze piston and the inner wall of the cylinder (113) include a clearance, and the cylinder (113) includes an oil return port (119), and the oil return port (119) is directed toward the clearance.

4. A high and low pressure combined multipurpose punching cylinder according to claim 3, characterized in that the gap is formed by the piston sleeve (116), the piston and the cylinder body (113).

5. The multipurpose punching cylinder matched with high pressure and low pressure according to claim 4, wherein two oil paths extend from the duplex pump, and the two oil paths are a high pressure oil pipe (Ph) and a low pressure oil Pipe (PL); a high-pressure oil pipe (Ph) is connected with a first electromagnetic valve (3) and a first cartridge valve (5) and then connected with a punching cylinder (10), and the high-pressure oil pipe (Ph) is also connected with a pressure switching valve (7) and a punching main valve (8); the low-pressure oil Pipe (PL) is connected with the pressure switching valve (7) after being connected with the one-way valve (1), the punching main valve (8) is connected with the punching cylinder (10), the electromagnetic valve II (4) and the cartridge valve II (6) are connected with the low-pressure oil Pipe (PL), and the cartridge valve II (6) is also communicated with a return pipe I (T1), a return pipe II (T2), a return pipe III (T3) and a return pipe IV (T4); the first return pipe (T1), the second return pipe (T2), the third return pipe (T3) and the fourth return pipe (T4) are connected with the oil suction pipe (14).

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