KR20110040708A - Actuator using pneumatic pressure and oil pressure - Google Patents

Abstract

PURPOSE: An actuator using air pressure and fluid pressure is provided to improve the precision of the operation thereof and prevent malfunction since a rod and a plunger moves in a reciprocating motion. CONSTITUTION: An actuator using air pressure and fluid pressure comprises a cylinder(100), a rod(210), and a plunger(310). The cylinder is partitioned into a first operating unit and a second operating unit by flow path holes. One end of the rod is installed inside the pressure chamber. The other end of the rod is formed in the first operating unit. The plunger is formed in the second operating unit. An installation groove is formed at one end of the pressure chamber. The installation groove is inserted into a high pressure seal and a guide bushing. The high pressure seal covers the outer circumference of a ram piston.

Description

Actuator using pneumatic pressure and oil pressure

The present invention relates to an actuator using pneumatic and hydraulic pressure, and more specifically, to an actuator using pneumatic and hydraulic pressure to obtain greater thrust by adding a pressure of a fluid to a rod operated by pneumatic pressure. By inserting the bushing in the passageway through which the air and the working fluid to the outside to minimize the amount of outflow to the pressure and the pressure applied to the rod and plunger actuator using the actuator.

In general, actuators using pneumatics and actuators using hydraulic pressure are mostly used for pressurization, and are mainly used in clamp mechanisms, compression mechanisms, cocking mechanisms, and the like. Although not required, large operating forces are often required near the end of operation.

Due to such a necessity, when determining the size of the actuator, it was inevitable to use a working cylinder of larger diameter and weight than necessary to obtain the required operating force near the extrusion end. However, when using a cylinder of such a large diameter and weight, the operation is slow due to the relatively slow operation and also requires a large amount of pneumatic or hydraulic oil, a problem of energy loss as well as manufacturing and maintenance costs.

In order to solve this problem, a booster cylinder configured to increase the operating force near the rod end position by connecting a booster device to a pipeline supplying hydraulic or pneumatic pressure to the cylinder to apply a higher pressure near the rod end position. It is started.

However, such a pressure-increasing cylinder is a high pressure is applied at the extrusion end position of the rod, when the piston rod is operated at a high speed by the booster device, such as a large shock occurs in the process of contact with the object, there was a problem that damage the object.

In addition, there is a hydraulic pressure intensifier in Korea Patent Publication No. 10-0704958 as a driver using a conventional pneumatic or hydraulic pressure, the main technical configuration of the reverse pneumatic passage is formed in the front and the forward pneumatic passage in the rear A first operating chamber having an operating piston formed therein and having an actuating rod protruding outwardly, a hydraulic operating chamber having a guide rod formed at the rear of the actuating piston located therein, and a piston installed therein, and the front of the hydraulic operating chamber having It is connected to the rear to form hydraulic pressure, and the rear side of the piston is provided with a working chamber in which a forward pneumatic passage is formed, and a boosting rod that passes through the piston forwards and backwards into the hydraulic working chamber. The second operation chamber is formed in the air passage and the pneumatic passage for the forward is formed in the rear, and the forward of the second operation chamber The spool pin is connected to the pneumatic passage and the spool pin installed inside is controlled by the Pyrod valve or check valve.In the early stage of the forward movement of the rod, the spool pin is moved forward by pneumatic trapped inside by closing the Pyrod valve or check valve. When the high load during the advance and the air is trapped inside the discharge spool pin is characterized in that it consists of a master valve for generating a boost by the forward pneumatic pressure flows into the second operating chamber by opening the forward pneumatic passage.

Although the above configuration has the advantage of enabling simultaneous use of pneumatic and hydraulic pressure and selectively supplying pneumatic pressure at high loads, the air and fluid flowing out between the operating rod and the guide rod and between the booster rod and the booster piston are As a means to prevent this, the seal is worn out due to the friction caused by the forward and backward movement of the working rod and the boosting rod in the case of long-term use by using only the seal made of elastic material, and thus the gap between the operating rod and the guide rod and between the boosting rod and the boosting piston. This not only causes the air and the fluid to escape, which not only has a problem of lowering efficiency, but also has a problem that the pressure does not work properly on the working rod and the booster rod because the seal is separated from the installation position when a high pressure is applied.

The present invention has been made to solve the problems as described above, the object of the present invention is to provide a pneumatic and maximizing the pressure applied to the piston by making it possible to seal the space between the piston and the pressure chamber by a simple configuration To provide a hydraulic actuator.

In addition, the present invention provides a driver using a pneumatic and hydraulic pressure to install the flow path bushing on the outside of the flow path hole so that the shape of the flow path hole does not change by the reciprocating motion of the plunger to seal the space between the plunger and the flow path hole. Has a different purpose.

In addition, the present invention provides a plunger bushing on the outside of the plunger to prevent air and fluid from escaping through the outer gap of the plunger and at the same time accurately guide the reciprocating motion of the plunger so that the plunger can press the pressure chamber accurately through the passage hole. It is yet another object to provide a pneumatic and hydraulic actuator that allows.

The present invention for achieving the above objects,

A cylinder partitioned into a first operating part and a second operating part by a flow path hole formed inside the pressure chamber, and one end of which is installed inside the pressure chamber and the other end of which protrudes out of the cylinder. In the actuator using pneumatic and hydraulic pressure comprising a rod provided in the portion and a plunger provided in the second operation portion, an installation groove is formed at one end of the pressure chamber, and an outer circumferential surface of the ram piston is formed in the installation groove. It is characterized in that the high-pressure seal is coupled to wrap, the guide bushing is installed.

At this time, the guide bushing is formed so that one end is in contact with the lower surface of the high-pressure seal, the other end is formed with a stepped portion so that the stepped portion protrudes out of the installation groove.

Here, the backup ring is inserted between the high pressure seal and the guide bushing.

In addition, the one end of the guide bushing is formed with a high pressure seal insertion groove, the high pressure seal is characterized in that the insertion is installed in the high pressure seal insertion groove.

And, the outer surface of the guide bushing is formed with a blocking groove, the blocking groove is characterized in that the blocking ring is inserted.

In addition, the present invention is such that the cylinder is divided into the first operating portion and the second operating portion by a flow path hole formed inside the pressure chamber, one end is installed inside the pressure chamber and the other end is projected out of the cylinder. In the actuator using the pneumatic and hydraulic pressure comprising a rod provided in the first operation portion and a plunger provided in the second operation portion, characterized in that the flow path bushing is fitted to the outer peripheral surface of the flow path hole.

At this time, a first insertion groove is formed on one side inner circumferential surface of the flow path bushing, a first elastic seal is inserted into and coupled to the first insertion groove, and an outer side of the first insertion groove prevents separation of the first elastic seal. The first sealing member and the first fixing ring for fixing the flow passage bushing and the first sealing member to the outside of the flow path hole is characterized in that the connection is installed.

In addition, the present invention is such that the cylinder is divided into the first operating portion and the second operating portion by a flow path hole formed inside the pressure chamber, one end is installed inside the pressure chamber and the other end is projected out of the cylinder. Thus, in the actuator using pneumatic and hydraulic pressure including a rod provided in the first operating part and a plunger provided in the second operating part, the outer circumferential surface of the plunger is characterized in that the plunger bushing is coupled.

At this time, a second inserting groove is formed in the inner circumferential surface and the outer circumferential surface of the plunger bushing and the second elastic seal is inserted and coupled to the outer side of the second inserting groove. And a second fixing ring connected to fix the plunger bushing and the second sealing member to the outside of the plunger.

The plunger bushing may include first to fourth plunger bushings, and a lubrication passage may be formed at an outer side of the plunger between the third and fourth plunger bushings.

In addition, the lubrication passage is formed with two lubrication holes to be in communication with the outside of the cylinder are opposed to each other, characterized in that the stopper is coupled to the end of the lubrication hole.

According to the actuator using the pneumatic and hydraulic pressure according to the present invention, it is possible to effectively increase the action force acting on the rod and plunger by allowing the air and fluid acting inside the cylinder to be sealed by a simple configuration. Has an excellent effect.

In addition, according to the present invention, by installing a bushing on the outside of the seal installed inside the cylinder, it is possible to prevent the seal from being separated by the reciprocating motion of the rod and the plunger and to apply a stronger pressure to the rod and the plunger, And the plunger can be reciprocated without shaking to increase the precision in the operation of the driver and further has the effect of preventing malfunction.

Further, according to the present invention, by installing the flow path bushing outside the flow path hole, the shape of the flow path hole is not changed by the reciprocating motion of the plunger so that the fluid existing in the second pressure chamber during the pressurization of the plunger flows through the flow path hole. It further has the effect of not leaving the storage room.

1 is a longitudinal sectional view showing one embodiment of a driver using pneumatic and hydraulic pressure in accordance with the present invention.
Figure 2 is a detailed cross-sectional view showing a connection between the first operating portion and the second operating portion of the present invention shown in FIG.
Figure 3 is a detailed cross-sectional view showing a coupling relationship between the high pressure seal and the guide bushing of the present invention shown in FIG.
4 (a) and 4 (b) are detailed cross-sectional views showing another embodiment of the present invention shown in FIG.
5 is a detailed cross-sectional view showing yet another embodiment of the present invention shown in FIG.
Figure 6 is a longitudinal sectional view showing another embodiment of the actuator using pneumatic and hydraulic pressure in accordance with the present invention.
7 and 8 are longitudinal cross-sectional view showing the operating relationship of the actuator using pneumatic and hydraulic pressure in accordance with the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail preferred embodiments of the actuator using the pneumatic and hydraulic pressure according to the present invention.

1 is a longitudinal sectional view showing an embodiment of a driver using pneumatic and hydraulic pressure according to the present invention, Figure 2 is a detailed cross-sectional view showing a connection between the first operating portion and the second operating portion of the present invention shown in FIG. 3 is a detailed cross-sectional view showing a coupling relationship between the high pressure seal and the guide bushing of the present invention shown in FIG. 1, and FIGS. 4A and 4B show another embodiment of the present invention shown in FIG. 5 is a detailed cross-sectional view showing still another embodiment of the present invention shown in FIG. 3, FIG. 6 is a longitudinal cross-sectional view showing another embodiment of the actuator using pneumatic and hydraulic pressure according to the present invention. 7 and 8 are longitudinal cross-sectional view showing the operation of the actuator using pneumatic and hydraulic pressure in accordance with the present invention.

According to the present invention, in the actuator 10 using pneumatic and hydraulic pressure to obtain a greater thrust by adding a pressure of the fluid to the rod 210 operated by air pressure, the bushing is inserted into a passage through which air and fluid pass. The installation relates to the actuator 10 using pneumatic and hydraulic pressure that can maximize the pressure applied to the rod 210 and the plunger 310 by minimizing the outflow of air and working fluid to the outside, the configuration is large The cylinder 100 partitioned into the first operating part 200 and the second operating part 300 by a flow path hole 120 formed inside the pressure chamber 110, and one end thereof is the pressure chamber 110. Plunger 310 is installed on the inner side and the other end is protruded to the outside of the cylinder 100 to be provided in the rod 210 and the second operating unit 300 provided in the interior of the first operation unit 200. It is configured to include).

In more detail, the pneumatic and hydraulic actuator 10 according to the present invention comprises a cylinder 100 having a pressure chamber 110 in the center, the interior of the cylinder 100 is a pressure chamber ( The first operation part 200 and the second operation part 300 are divided by the flow path hole 120 formed inside the 110.

At this time, the inner side of the first operation unit 200 is installed so that one end is protruded to the outside of the cylinder 100, the rod 210 for reciprocating forward and backward is installed, the central portion of the rod 210 A piston 212 for operating the rod 210 by pneumatic pressure is provided, and the other end of the rod 210 is provided with a lamp piston 214 for operating the rod 210 by hydraulic pressure.

In addition, a first pressure chamber 220 and a second pressure chamber 230 are formed inside the first operation unit 200, and the first pressure chamber 220 is formed by the pressure of air introduced from the outside. The space for allowing the piston 212 to operate, the second pressure chamber 230 is filled with a liquid fluid therein, the ramp piston 214 by the pressure of the fluid generated by the operation of the plunger 310 It is a space to apply more pressure to).

In more detail, first to third air passages 222, 224, 226 are formed in the first pressure chamber 220 to communicate with the outside, and the first air passage 222 is formed in front of the piston 212. At the same time, the air pressurized by the piston 212 is discharged to the outside during the forward driving of the rod 210 and the air is injected into the first pressure chamber 220 when the rod 210 is driven backward. ) By pressing the rod in the reverse direction so that the rod 210 can be driven backward. The second air passage 224 is formed at the rear of the piston 212 so as to drive the piston 210 in the reverse direction of the rod 210. The air pressurized by 212 is discharged to the outside, and the third air passage 226 is formed at the rear of the piston 212 so that the first pressure chamber 220 is driven forward of the rod 210. Injecting air into the inside of the piston to press the 212 in the forward direction It is to play a role.

At this time, although not shown, the third air passage 226 is connected to the fourth air passage 322 formed in the second operation unit 300 to be described later, and the third air passage when the piston 212 is driven forward. The second pressure chamber 230 generated by the forward driving of the piston 212 by allowing air to be simultaneously injected through the 226 and the fourth air passage 322 to advance the first cylindrical piston 312. It is configured to quickly fill the fluid stored in the fluid storage chamber 320 in the space of the through the flow path hole (120). In addition, of course, the second and third air passages 224 and 226 may be configured as one passage.

On the other hand, the mounting groove 112 is formed inside the front end of the pressure chamber 110, the high pressure seal 130 and the guide bushing 140 is provided in the rod 210, the ram piston It is inserted and coupled to surround the outer circumferential surface of the 214. The high pressure seal 130 has the fluid present in the second pressure chamber 230 during the forward driving of the rod 210, the ramp piston 214 and the pressure chamber 110. It is to serve to improve the pressurization efficiency of the ram piston 214 by the hydraulic pressure so as not to escape through the space between, the guide bushing 140 is installed on the front outside of the high-pressure seal 130 It is to guide the front and rear driving of the rod 210 and to seal the space between the lamp piston 214 and the pressure chamber 110 sealed by the high pressure seal 130 more reliably.

That is, the guide bushing 140 is made of a metal material to guide the rod 210 to move forward and backward without shaking, thereby improving the precision in operating the rod 210 and at the same time reciprocating the rod 210. By the wear is not made by the high-pressure seal 130 of the elastic material is to be surely sealed the space between the ram piston 214 and the pressure chamber 110 even when worn by the reciprocating motion of the rod.

In addition, the guide bushing 140 is formed so that one end is in contact with the lower surface of the high-pressure seal 130, the stepped portion 142 is formed on the outer peripheral surface of the other end is the stepped portion 142 is the installation groove 112 By increasing the coupling force between the guide bushing 140 and the mounting groove 112 by protruding to the outside of the rod) and the high pressure seal 130 is not separated by the driving pressure of the rod 210 Since it is possible to apply a stronger pressure to the 210 is configured to significantly improve the driving performance of the driver (10).

In this case, as shown in FIG. 3, a first backup ring 135 may be installed between the high pressure seal 130 and the guide bushing 140, and the first backup ring 135 may be a high pressure seal 130. ) Is used to prevent the outward phenomenon.

That is, the high pressure seal 130 is subjected to a strong pressure during the forward and backward driving of the rod 210, and tends to escape to the outside despite the presence of the guide bushing 140 when used for a long time, the high pressure seal 130 ) Is released, the first backup ring because the fluid present in the second pressure chamber 230 may escape through the space between the ram piston 214 and the pressure chamber 110 when the rod 210 is driven forward. Through the 135, the high-pressure seal 130 is to protrude out or out.

In addition, in order to prevent the high pressure seal 130 from exiting as described above, as shown in FIGS. 4A and 4B, the high pressure seal is formed at one end of the guide bushing 140 in contact with the high pressure seal 130. The insertion groove 144 may be formed, and the high pressure seal 130 may be inserted into and fixed to the high pressure seal insertion groove 144.

At this time, the groove 146 or the projection 148 may be formed on the outer surface of the guide bushing 140, the groove 146 or the projection 148 is a guide bushing fitted to the installation groove 112 ( To facilitate the disassembly 140).

In addition, as shown in Figure 4 (a), a plurality of oil grooves 149 is formed on the inner surface of the guide bushing 140, so that the O-ring (not shown) is fitted to the oil groove 149. As a result, the fluid existing in the second pressure chamber 230 may be prevented from escaping through the space portion between the guide bushing 140 and the ramp piston 214.

On the other hand, as shown in Figure 5, the outer surface of the guide bushing 140 is formed with a blocking groove 145, the blocking groove 145 may be configured such that the blocking ring 145a is inserted coupling. The blocking ring 145a may prevent high pressure from being applied to the guide bushing 140 by blocking high pressure applied during front and rear driving of the rod 210 through the outer surface of the guide bushing 140. It is to play a role.

In this case, a second backup ring 145b may be additionally installed in the blocking groove 145, and the second backup ring 145b may be guided by preventing the blocking ring 145a from escaping from the blocking groove 145. It serves to make the coupling force between the bushing 140 and the blocking ring 145a more firm.

On the other hand, the second actuating part 300 pressurizes the ram piston 214 by hydraulic pressure by supplying a fluid to the inside of the first actuating part 200 through the flow path hole 120 to increase the driving force of the rod 210. The plunger 310 is installed inside the second operation part 300 to serve to reinforce.

In more detail, the plunger 310 has one end portion introduced into the second pressure chamber 230 through the passage hole 120 so that the plunger 310 can apply stronger pressure to the lamp piston 214 by hydraulic pressure. Its diameter is the same as that of the passage hole 120 so that the plunger 310 can seal the passage hole 120 when the plunger 310 is introduced into the second pressure chamber 230 of the first operating part 200. It is configured to.

In addition, the plunger 310 is provided with a first cylindrical piston 312 to fill the fluid as much as the volume of the second pressure chamber 230 when the rod 210 is driven forward, the plunger 310 At the other end of the second cylindrical piston 314 to integrally drive the plunger 310 forward and backward by pneumatically formed.

Meanwhile, a fluid storage chamber 320 and a third pressure chamber 330 are formed in the second operation part 300, and the fluid storage chamber 320 has a fluid in a liquid state, so that the rod 210 It is to serve to fill the second pressure chamber 230 with the volume of the fluid of the second pressure chamber 230 increased by the forward drive of the), the third pressure chamber 330 is a plunger ( By applying pneumatic pressure to the second cylindrical piston 314 provided in 310 serves to drive the plunger 310 forward and backward.

In this case, a fourth air passage 322 is formed in the fluid storage chamber 320 so as to communicate with the outside, the fourth air passage 322 is the first cylindrical piston 312 installed inside the fluid storage chamber 320 The first cylindrical piston is formed in the rear direction of the rod 210 is driven forward to inject air into the fluid storage chamber 320 when the space portion is not filled with the fluid in the second pressure chamber 230 is formed By pressing the 312 to allow the first cylindrical piston 312 to be driven forward, the fluid stored in the fluid storage chamber 320 is discharged to the inside of the second pressure chamber 230 through the passage hole 120. The first cylindrical piston 312 when the plunger 310, which has been advanced into the second pressure chamber 230 to return to the second operating part 300, serves to press the ram piston 214 at the same time. The air inside the fluid storage chamber 320 that is pressurized by the rear drive of the) can be discharged to the outside. It is to play a role.

In addition, fifth and sixth air passages 332 and 334 are formed in the third pressure chamber 330 so as to communicate with the outside, and the fifth air passage 332 is the front of the third pressure chamber 330. Is formed in the air in the third pressure chamber 330 located in front of the second cylindrical piston 314 when the front of the plunger 310 is discharged to the outside while driving the rear of the plunger 310 When the air is injected through the fifth air passage 332 to pressurize the front surface of the second cylindrical piston 314 to drive the second cylindrical piston 314 to the rear to move the plunger 310 to the rear. The sixth air passage 334 is formed at the rear of the third pressure chamber 330 to inject air to the rear side of the second cylindrical piston 314 when the plunger 310 is driven forward, The second cylinder when the two-cylinder piston 314 and the plunger 310 can be driven forward while the rear of the plunger 310 is driven The air inside the third pressure chamber 330 positioned at the rear of the piston 314 may be discharged to the outside.

On the other hand, the outer circumferential surface of the plunger 310 is coupled to a plurality of plunger bushing 350 made of a metal material, the plunger bushing 350 is driven without shaking during the front and rear drive of the plunger 310 By guiding the plunger 310 to accurately pass between the flow path holes 120, the plunger 310 serves to prevent the fluid and air from leaking into the gap formed on the outside of the plunger 310.

In more detail, the plunger bushing 350 includes first and second plunger bushings 350a and 350b installed at both ends of the front and rear ends of the first cylindrical piston 312 and the rear of the fluid storage chamber 320. The third plunger bushing 350c installed at the end and the fourth plunger bushing 350d installed at the front end of the third pressure chamber 330 are installed to seal the outer circumferential surface of the plunger 310 so as to seal the plunger. The air and fluid present in the fluid storage chamber 320 and the air present in the third pressure chamber 330 do not escape through gaps formed outside the plunger 310 during the front and rear driving of the plunger 310. It is to improve the efficiency of the forward and backward driving (310).

In this case, a lubrication passage 360 is formed on the outside of the plunger 310 positioned between the third and fourth plunger bushings 350c and 350d to accommodate a lubricant such as grease. The lubrication is provided therein to serve to allow the plunge 310 to move smoothly in the front and rear directions. Here, a separate lubrication passage is not formed between the first and second plunger bushings 350a and 350b, because the rod (on the surface of the plunger 310 located inside the fluid storage chamber 320) Since the hydraulic oil for applying hydraulic pressure is buried in the ram piston 214 provided in the 210, a lubricant for smoothly moving the first cylindrical piston 312 is not required.

In addition, the lubrication passage 360 has a lubrication hole 370 is formed to communicate with the outside of the cylinder 100, so that the lubricant can be injected into the lubrication passage 360 through the lubrication hole 370. do. At this time, as shown in Figure 1, the lubrication hole 370 is preferably formed in two places to face each other at intervals of 180 degrees, because the lubrication passage (lubrication passage (370) through the lubrication hole 370 formed on one side This is because when the lubricant is injected through the lubrication hole 370 formed on the other side, the lubrication passage 360 may be easily filled with the lubricant.

In addition, a stopper 380 is coupled to an outer end of the lubrication hole 370, that is, the outer surface of the cylinder 100, and is configured to seal the lubrication passage 360 and the lubrication hole 370.

In addition, a second insertion groove 352 is formed on an inner circumferential surface and an outer circumferential surface of the plunger bushing 350, and a second elastic seal 354 is inserted inside the second insertion groove 352 to install the plunger bushing 350. It is configured to strengthen the sealing force of).

In addition, a ring-shaped second sealing member 356 is installed outside the second insertion groove 352 formed on the inner circumferential surface of the plunger bushing 350 so as to be inserted into the second insertion groove 352. The elastic seal 354 is not separated to the outside, and the second fixing ring 358 is installed on the outside of the second sealing member 356 to plunger the bushing 350 and the second sealing member 356 ( It is configured to be firmly fixed to the outer peripheral surface of 310.

On the other hand, a metal channel flow path bushing 150 is fitted to the outer circumferential surface of the flow path hole 120 formed between the first operation unit 200 and the second operation unit 300, the flow path bushing 150 Is to prevent the shape of the flow path hole 120 from being deformed by the plunger 310 which is driven forward and backward through the inside of the flow path hole 120.

In more detail, since the passage hole 120 is formed to have a diameter substantially the same as that of the plunger 310, if the driving of the plunger 310 is not precise, a collision between the plunger 310 and the passage hole 120 may occur during driving. There is a possibility that the shape of the flow path hole 120 is deformed, such that the flow path hole 120 is widened, and the shape of the flow path hole 120 is deformed as described above. When entering the second pressure chamber 230 to pressurize the ram piston 214, the fluid of the second pressure chamber 230 is discharged into the space between the plunger 310 and the flow path hole 120, the pressure efficiency is Falling problem will occur.

Therefore, the flow path bushing 150 is coupled to the outer circumferential surface of the flow path hole 120 so that the shape of the flow path hole 120 is not deformed even when a collision occurs between the plunger 310 and the flow path hole 120. ) Is to serve to maintain the sealing force between the plunger 310 and the flow path hole 120 when entering the second pressure chamber 230 of the first operating part (200).

In this case, a first insertion groove 152 is formed on one side inner circumferential surface of the flow path bushing 150, and a first elastic seal 154 is inserted inside the first insertion groove 152 to install the flow path hole 120. It is configured to enhance the coupling force of the flow path bushing 150 is coupled to the outer peripheral surface of the.

In addition, a ring-shaped first sealing member 156 is installed outside the first insertion groove 152 so that the first elastic seal 154 inserted into the first insertion groove 152 is not detached to the outside. The first fixing ring 158 is installed outside the first sealing member 156 to firmly fix the flow path bushing 150 and the first sealing member 156 to the outer circumferential surface of the flow path hole 120. It is configured to.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating process of the actuator 10 using pneumatic and hydraulic pressure in accordance with the present invention.

First, in order to advance the rod 210 installed in the first operation unit 200, the interior of the first pressure chamber 220 through the third air passage 226 formed at the rear of the first pressure chamber 220. Air is injected into the At this time, the rear surface of the piston 212 is pressurized by the air injected into the interior of the first pressure chamber 220, so that the rod 210 is driven forward, that is, outward of the cylinder 100, as shown in FIG. do.

In this case, a space part in which the fluid is not filled is formed in the second pressure chamber 230 by the forward driving of the rod 210, and the fluid as much as the volume of the space part is stored in the fluid storage chamber of the second operation part 300 ( The inside of the second pressure chamber 230 is filled from the flow path hole 320 through 320. That is, when the space portion is formed in the second pressure chamber 230 by the forward drive of the rod 210, the first cylinder by injecting air through the fourth air passage 322 formed in the rear of the fluid storage chamber 320 By moving the piston 312 forward, the fluid stored in the fluid storage chamber 320 is filled into the second pressure chamber 230 through the flow path hole 120.

As such, when the rod 210 is driven to some extent in the forward direction, the second pressure chamber is driven by driving the plunger 310 provided in the second operation part 300 to the front in order to generate high pressure necessary for the operation of the rod 210. The fluid filled in the 230 is pressurized, which will be described in more detail through the sixth air passage 334 formed in the third pressure chamber 330 of the second operation part 300 of the third pressure chamber 330. When air is injected into the inside, the second cylindrical piston 314 provided at the other end of the plunger 310 is pressed to move the plunger 310 forward as shown in FIG. 8.

By such driving, the plunger 310 fills the inside of the second pressure chamber 230 while entering the inside of the second pressure chamber 230 formed in the first operation part 200 through the passage hole 120. By pressing the fluid, the ram piston 214 can be moved forward to apply more powerful pressure to the rod 210.

At this time, the high pressure seal 130 installed between the pressure chamber 110 and the ramp piston 214 and the flow path bushing 150 coupled to the outer circumferential surface of the guide bushing 140 and the flow path hole 120 are formed. Since the two pressure chambers 230 are completely sealed without leaking fluid, the pressure chamber 230 may maximize the action force acting on the rod 210 and at the same time, may apply a stronger pressure to the rod 210.

Meanwhile, in order to reposition the rod 210 driven forward, air is injected through the fifth air passage 332 formed in the third pressure chamber 330 to pressurize the second cylindrical piston 314 to press the plunger ( After driving 310 to the rear to open the passage hole 120, the air is injected into the first pressure chamber 220 through the first air passage 222 formed in the first pressure chamber 220. The piston 212 provided in the rod 210 is pushed backward so that the rod 210 is driven rearward, and the fluid filled in the second pressure chamber 230 is a ramp piston provided in the rod 210. By the rear movement of the 214 is moved to the fluid storage chamber 320 of the second operation unit 300 through the flow path hole (120).

At this time, the air located in the rear of the first cylindrical piston 312 and the second cylindrical piston 314 by the rear drive of the plunger 310 to the outside through the fourth and sixth air passage (322, 334), respectively. The air, which is located at the rear of the piston 212 by the rear driving of the rod 210, is discharged to the outside through the second air passage 224. At this time, although not shown, the second air passage 224 is connected to the fourth air passage 322 formed in the second operation part 300, so that the second air passage 226 is driven when the piston 212 is driven backward. ) Is generated by the backward driving of the first cylindrical piston 312 by allowing the air to be simultaneously discharged through the fourth air passage 322 so that the first cylindrical piston 312 can be reversed simultaneously with the piston 212. The fluid compressed in the space of the second pressure chamber 230 in the space of the fluid storage chamber 320 is configured to be quickly filled through the flow path hole 120.

Therefore, according to the actuator 10 using the pneumatic and hydraulic pressure according to the present invention, the rod 210 and the plunger (by the air and fluid acting inside the cylinder 100 can be sealed by a simple configuration). It is possible to efficiently increase the acting force acting on the 310, and by installing the bushing on the outside of the seal installed in the cylinder 100 to prevent the seal from being separated by the reciprocating motion of the rod 210 and the plunger 310 To prevent and apply more pressure to the rod 210 and the plunger 310, as well as to allow the rod 210 and the plunger 310 to reciprocate without shaking, thereby increasing the operating precision of the driver 10 Malfunction can be prevented, and the flow path bushing 150 is provided outside the flow path hole 120 so that the shape of the flow path hole 120 is not changed by the reciprocating motion of the plunger 150 to pressurize the plunger 310. production There is a variety of advantages, such as to prevent the fluid present in the second pressure chamber 230 to escape to the fluid storage chamber 320 through the passage hole 120.

Meanwhile, as shown in FIG. 6, according to another embodiment of the actuator 10 using pneumatic and hydraulic pressure according to the present invention, the lamp 210 constituting the first operating part 200 is not provided with the lamp piston 214. Since only the piston 212 is formed, it is not necessary to configure the high pressure seal 130 and the guide bushing 140, and the rod 210 is injected through the fourth air passage 322 formed in the second operation part 300. The pressure and the plunger 310, in which the fluid stored in the fluid storage chamber 320 flows into the second pressure chamber 230 through the flow path hole 120 by the first cylindrical piston 312 which is driven forward by the pressure of the air to be forwarded. Piston 212 is pushed forward by the hydraulic pressure generated by the forward drive of the forward, the rear drive of the rod 210 is the air flowing through the first air passage 222 is the front of the piston 212 There is only a difference made by pressing the flow path, the flow path portion provided on the outer peripheral surface of the flow path hole 120 150, a configuration such as a plunger bushing 350 and the lubrication passage 360 provided in the outer peripheral surface of the plunger 310 is the same with all of the embodiments described above a detailed explanation shall be omitted.

Although the above embodiments have been described with respect to the most preferred examples of the present invention, it is not limited to the above embodiments, and it will be apparent to those skilled in the art that various modifications are possible without departing from the technical spirit of the present invention.

The present invention relates to an actuator using pneumatic and hydraulic pressure, and more specifically, to an actuator using pneumatic and hydraulic pressure to obtain greater thrust by adding a pressure of a fluid to a rod operated by pneumatic pressure. By inserting the bushing in the passageway through which the air and the working fluid to the outside to minimize the amount of outflow to the pressure and the pressure applied to the rod and plunger actuator using the actuator.

10: driver 100: cylinder
110: pressure chamber 112: mounting groove
120: euro hole 130: high pressure seal
135: first backup ring 140: guide bushing
142: step 144: high pressure seal insertion groove
145: blocking groove 145a: blocking ring
145b: the second backup ring 146: home
148: protrusion 150: euro bushing
152: the first insertion groove 154: the first elastic seal
156: first sealing member 158: first fixing ring
200: first operation portion 210: rod
212 piston 214 ram piston
220: first pressure chamber 222: first air passage
224: second air passage 226: third air passage
230: second pressure chamber 300: second operating part
310: plunger 312: first cylindrical piston
314: second cylinder piston 320: fluid storage chamber
322 fourth air passage 330 third pressure chamber
332: 5th air passage 334: 6th air passage
350: plunger bushing 352: second insertion groove
354: second elastic seal 356: second sealing member
358: second fixing ring 360: lubrication passage
370: lubrication hole 380: stopper

Claims (11)

A cylinder partitioned into a first operating part and a second operating part by a flow path hole formed inside the pressure chamber, and one end of which is installed inside the pressure chamber and the other end of which protrudes out of the cylinder. In the actuator using a pneumatic and hydraulic pressure comprising a rod provided in the unit and a plunger provided in the second operation unit,
An installation groove is formed at one end of the pressure chamber, and the high pressure seal coupled to surround the outer circumferential surface of the ram piston and the guide bushing are inserted into the installation groove.
The method of claim 1,
The guide bushing is formed so that one end is in contact with the lower surface of the high-pressure seal, the other end is formed with a stepped portion is formed so that the stepped portion protrudes to the outside of the installation groove.
The method of claim 2,
Actuator using pneumatic and hydraulic pressure, characterized in that the backup ring is inserted between the high pressure seal and the guide bushing.
The method of claim 2,
The high pressure seal insertion groove is formed at one end of the guide bushing, and the high pressure seal is inserted into the high pressure seal insertion groove.
The method of claim 2,
Blocking groove is formed on the outer surface of the guide bushing, the blocking groove is an actuator using pneumatic and hydraulic, characterized in that the blocking ring is inserted.
A cylinder partitioned into a first operating part and a second operating part by a flow path hole formed inside the pressure chamber, and one end of which is installed inside the pressure chamber and the other end of which protrudes out of the cylinder. In the actuator using a pneumatic and hydraulic pressure comprising a rod provided in the unit and a plunger provided in the second operation unit,
Actuator using pneumatic and hydraulic pressure, characterized in that the flow path bushing is fitted to the outer peripheral surface of the flow path hole.
The method of claim 6,
A first insertion groove is formed on one side inner circumferential surface of the flow path bushing, and a first elastic seal is inserted into and coupled to the first insertion groove, and a first sealing portion prevents detachment of the first elastic seal on the outer side of the first insertion groove. And a first fixing ring for fixing the member and the flow path bushing and the first sealing member to the outside of the flow path hole.
A cylinder partitioned into a first operating part and a second operating part by a flow path hole formed inside the pressure chamber, and one end of which is installed inside the pressure chamber and the other end of which protrudes out of the cylinder. In the actuator using a pneumatic and hydraulic pressure comprising a rod provided in the unit and a plunger provided in the second operation unit,
Pneumatic actuator, characterized in that the plunger bushing is coupled to the outer peripheral surface of the plunger.
The method of claim 8,
A second sealing groove is formed in the inner circumferential surface and the outer circumferential surface of the plunger bushing, and a second insertion groove into which the second elastic seal is respectively inserted and coupled to the outer surface of the second insertion groove formed in the inner circumferential surface prevents the separation of the second elastic seal. And a second fixing ring connected to fix the plunger bushing and the second sealing member to the outside of the plunger.
The method of claim 8,
The plunger bushing is composed of first to fourth plunger bushing, the plunger between the third and fourth plunger bushing lubrication passage is characterized in that the actuator using pneumatic and hydraulic pressure.
The method of claim 10,
The lubrication passage is formed with two lubrication holes to be in communication with the outside of the cylinder facing each other, the end of the lubrication hole is characterized in that the plug is coupled to the actuator using pneumatic and hydraulic.

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