WO2023243704A1 - 加圧装置 - Google Patents

加圧装置 Download PDF

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Publication number
WO2023243704A1
WO2023243704A1 PCT/JP2023/022372 JP2023022372W WO2023243704A1 WO 2023243704 A1 WO2023243704 A1 WO 2023243704A1 JP 2023022372 W JP2023022372 W JP 2023022372W WO 2023243704 A1 WO2023243704 A1 WO 2023243704A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
cylindrical body
pressurizing device
diameter portion
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/022372
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
義博 小川
邦明 三宅
法行 小川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eagle Industry Co Ltd
Original Assignee
Eagle Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eagle Industry Co Ltd filed Critical Eagle Industry Co Ltd
Priority to CN202380045545.1A priority Critical patent/CN119325536A/zh
Priority to US18/872,725 priority patent/US12480536B2/en
Priority to EP23823994.1A priority patent/EP4542055A4/en
Priority to JP2024528965A priority patent/JPWO2023243704A1/ja
Publication of WO2023243704A1 publication Critical patent/WO2023243704A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/32—Controlling equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2069—Exerting after-pressure on the moulding material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/045—Dead weight accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • F15B15/1461—Piston rod sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1471—Guiding means other than in the end cap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
    • F15B2215/30—Constructional details thereof

Definitions

  • the present invention relates to a pressurizing device that pressurizes a workpiece.
  • pressurizing device that uses a cylinder device to pressurize an object by using the pressure of a fluid, and it is possible to pressurize an object by moving a piston inside the cylinder in response to the pressure of the fluid. ing.
  • the pressurizing device of Patent Document 1 includes a cylinder device, a pump, and an accumulator.
  • a pump When pressurized fluid is supplied to the cylinder device from a pump or an accumulator, the piston moves relatively within the cylinder to pressurize the object to be acted upon.
  • the present invention was made with attention to such problems, and an object of the present invention is to provide a pressurizing device that has a compact structure and can pressurize an object to be acted upon with a substantially constant force.
  • the pressurizing device of the present invention has the following features: a pressure accumulator; a piston having a small diameter portion inserted into the cylinder portion on the pressure accumulating portion side and a large diameter portion disposed on the acted body side; a cylindrical body extending from the large diameter part to the cylinder part, A lubricating fluid is held within the cylindrical body.
  • the pressure in the pressure accumulating part that acts on the small diameter part is dispersed in the large diameter part and transmitted to the actuated object, so it has a compact structure that does not use an accumulator or pump, and the Changes in pressure applied to the body can be reduced.
  • the piston can stroke smoothly due to the lubricating fluid held within the cylindrical body.
  • the cylinder portion and the cylindrical body may be slidable. According to this, the movement of the piston is guided by the small diameter part inside the cylinder part and the cylindrical body outside the cylinder part, so the stroke of the piston is stabilized.
  • a breathing hole may be formed above the cylindrical body. According to this, when the piston moves, the pressure inside the cylindrical body can be prevented from rising or falling due to the breathing hole, so the piston moves smoothly.
  • the breathing hole may be provided at a position where it is not blocked when the cylindrical body is inserted into the cylinder part the most. According to this, the piston moves smoothly over the entire stroke of the piston.
  • It may have a movement restriction part in the insertion direction of the cylindrical body. According to this, the movement of the cylindrical body in the insertion direction is restricted by the movement restricting portion, thereby reliably preventing the breathing hole from being blocked.
  • the lubricating fluid may be maintained such that the liquid level is at least at the height of the small diameter portion when the cylindrical body is inserted most into the cylinder portion. According to this, since the lubricating fluid is supplied to the gap between the cylinder part and the small diameter part, the piston moves smoothly.
  • FIG. 3 is a longitudinal cross-sectional view showing a compressed state of the pressurizing device in Example 1 of the present invention.
  • FIG. 3 is a longitudinal cross-sectional view showing an extended state of the pressurizing device in Example 1.
  • FIG. 7 is a longitudinal cross-sectional view showing the compressed state of the pressurizing device in Example 2 of the present invention.
  • FIG. 3 is a longitudinal cross-sectional view showing an extended state of the pressurizing device in Example 2;
  • a pressurizing device according to Example 1 will be described with reference to FIGS. 1 and 2.
  • the left side of FIG. 1 will be described as the left side of the pressure device
  • the right side of FIG. 1 will be described as the right side of the pressure device.
  • the pressurizing device 1 pressurizes a workpiece W using fluid pressure.
  • the object W to be applied in this embodiment will be described as being arranged on the right side of the pressurizing device 1, and the position of the pressurized surface W1 changes in the axial direction, that is, in the left-right direction in the plane of FIG. 1, depending on the usage state. .
  • the pressurizing device 1 mainly includes a case 2, a connecting body 3 as a cylinder part, a piston 4 as a pressure transmitting body, and a cylindrical body 5 as a guide body.
  • the case 2 has a cylindrical shape.
  • the right end of the outer peripheral surface of the case 2 has a smaller diameter than the left end. That is, on the outer peripheral surface of the case 2, a step portion 2a serving as a movement restricting portion is formed in an annular shape.
  • a lid member 6 is connected to the inner peripheral surface of the left end portion of the case 2 in a sealed manner by screwing.
  • This lid member 6 has a through hole 6a formed in its center.
  • a plug 7 is attached to the through hole 6a.
  • the case 2 and the lid member 6 may be integrally formed of the same member.
  • the connecting body 3 has a stepped cylindrical shape with a through hole 3A.
  • the left end of the connecting body 3 is screwed onto the inner circumferential surface of the right end of the case 2 to form a sealing connection.
  • the case 2 and the connecting body 3 are separate bodies, but they may be integrally formed of the same member.
  • annular recesses 3c and 3d recessed in the inner diameter direction are provided spaced apart in the axial direction.
  • a seal ring 8 is fitted into the annular recess 3c on the right side.
  • the left annular recess 3d is shallower than the annular recess 3c, and the seal ring 8 is not fitted therein.
  • the seal ring 8 has been explained using an O-ring as an example, it may be of any type such as an X-ring or a lip seal. Further, the annular recess 3d has an oil reservoir function and allows smooth sliding. Note that the annular recess 3d may be provided at any position in the axial direction of the outer circumferential surface 3b of the flange as long as sliding properties can be improved.
  • the piston 4 is composed of a large diameter portion 41 and a small diameter portion 42.
  • the large diameter portion 41 has a disk shape.
  • the small diameter portion 42 has a cylindrical shape and extends from the center of the large diameter portion 41 toward the left side.
  • the diameter L1 of the large diameter portion 41 is larger than the diameter L2 of the small diameter portion 42, and in this embodiment is about three times the diameter L2. Note that the diameter L1 of the large diameter portion 41 may be larger than the diameter L2 of the small diameter portion 42, and preferably the diameter L1 of the large diameter portion 41 is approximately 2 to 5 times the diameter L2 of the small diameter portion 42. It is sufficient if the dimensions are as follows.
  • the large diameter portion 41 has a flat right end surface 41a.
  • This end surface 41a is arranged so as to be able to directly approach and separate from the object W to be acted upon. Specifically, the end surface 41a is configured to come into surface contact with the pressurized surface W1 of the object W to be applied. Note that the end surface 41a may be fixed to the pressurized surface W1 of the object W to be acted upon, and may be configured to move integrally with the object W to be actuated.
  • the small diameter portion 42 is inserted into the through hole 3A of the connecting body 3 so as to be slidable on the inner circumferential surface 3a of the connecting body 3.
  • the leftmost annular recess 42a and the third annular recess 42c from the left are formed shallower than the second annular recess 42b from the left and the rightmost annular recess 42d. Furthermore, seal rings 9 are fitted into the annular recess 42b and the annular recess 42d, respectively. Note that the seal ring 9 is not fitted into the annular recesses 42a and 42c.
  • seal ring 9 has been explained using an X-ring as an example, it may be of any type such as an O-ring or a lip seal. Furthermore, since a plurality of seal rings 9, specifically two seal rings 9, are arranged in the axial direction, there is almost no oil leakage to the pressure accumulating portion 10, and the piston 4 is less likely to tilt when it moves. .
  • annular recesses 42a and 42c have a gas reservoir function and an oil reservoir function, and are designed to prevent gas leakage and allow smooth sliding.
  • the seal ring 9 is slidable in the axial direction on the inner circumferential surface 3a of the connecting body 3, and restricts the movement of fluid in the axial direction.
  • the pressure accumulating portion 10 is configured on the left side of the pressurizing device 1. Specifically, the pressure accumulating portion 10 is a space surrounded by the case 2, the connecting body 3, the piston 4, and the lid member 6. The capacity of the pressure accumulating portion 10 changes as the piston 4 moves as described later (see FIG. 2).
  • High-pressure gas G is sealed into the pressure accumulating portion 10 from the outside through a gas inlet (not shown) of the stopper 7.
  • the pressure accumulator 10 is a cylindrical gas chamber.
  • the diameter D1 of the through hole 3A of the connecting body 3 is smaller than the diameter D2 of the pressure accumulating portion 10, and in this embodiment, it is approximately 1 ⁇ 3 times the diameter D2 (D1 ⁇ D2).
  • the diameter D1 of the through hole 3A may be smaller than the diameter D2 of the pressure accumulating portion 10, and preferably the diameter D1 of the through hole 3A is approximately 1/2 to 1/5 times the diameter D2 of the pressure accumulating portion 10. It is sufficient that the dimensions are approximately the same.
  • the right end portion of the cylindrical body 5 is screwed onto the outer peripheral surface of the large diameter portion 41 to form a sealing connection, and is integrated with the piston 4.
  • the right end surface of this cylindrical body 5 is arranged substantially flush with the right end surface 41a of the large diameter portion 41 or on the left side of the end surface 41a. According to this, the cylindrical body 5 does not interfere with the surface contact between the end surface 41a of the large diameter portion 41 and the pressurized surface W1 of the object W to be applied.
  • cylindrical body 5 is fitted over the connecting body 3, and the inner circumferential surface 5a of the cylindrical body 5 is slidable in the axial direction with respect to the outer circumferential surface 3b of the right end portion of the connecting body 3. ing.
  • a seal ring 8 restricts movement of fluid in the axial direction between the inner circumferential surface 5a of the cylindrical body 5 and the outer circumferential surface 3b of the connecting body 3.
  • a space 11 is formed by the connecting body 3, the large diameter portion 41 of the piston 4, and the cylindrical body 5.
  • the space 11 holds oil F as a lubricating fluid.
  • the capacity of this space 11 changes as the piston 4 moves as described later (see FIG. 2).
  • a breathing hole 51 is formed in the upper right side of the cylindrical body 5. That is, the space 11 communicates with the external atmospheric space through the breathing hole 51.
  • the left end portion 5b of the cylindrical body 5 protrudes toward the inner diameter side.
  • the end portion 5b is connected to the stepped portion 2a of the case 2 when the piston 4 and the cylindrical body 5 move to the leftmost position, in other words, when the cylindrical body 5 is inserted the most into the connecting body 3. They are designed to touch each other.
  • the case 2 is fixed to a fixed body (not shown), and is immovable at least in the axial direction, that is, in the left-right direction.
  • the pressurizing device 1 when the actuated body W is placed at the leftmost position, the pressurizing device 1 is in a contracted state in which the piston 4 and the cylindrical body 5 have moved to the leftmost position.
  • the pressurizing device 1 When the pressurizing device 1 is in the contracted state, the left end 5b of the cylindrical body 5 comes into contact with the step 2a of the case 2, and movement of the piston 4 and the cylindrical body 5 to the left is restricted. .
  • the capacity of the pressure accumulating portion 10 is the smallest in the stroke range of the piston 4, and the gas G is in the most compressed state.
  • the gas G is restricted from moving to the right space 11 by the seal rings 9, 9. Further, the annular recesses 42a and 42c function as gas reservoirs, so that leakage of the gas G can be effectively suppressed.
  • the pressure of the gas G in the pressure accumulator 10 acts on the left surface 42e of the small diameter portion 42 (see arrow L10).
  • the pressure of the gas G acting on the left surface 42e of the small diameter portion 42 is transmitted to the workpiece W as stress dispersed in the large diameter portion 41 (see arrow L20).
  • the breathing hole 51 of the cylindrical body 5 is arranged on the right side of the connecting body 3. That is, the breathing hole 51 is not blocked.
  • a water-repellent ventilation sheet 51s is installed so as to close the breathing hole 51, allowing gas to flow while preventing water from entering the space 11 from the outside.
  • the liquid level of the oil F is located near the bottom of the breathing hole 51.
  • the oil F is supplied to the gap between the outer peripheral surface of the small diameter portion 42 of the piston 4 and the inner peripheral surface 3a of the connecting body 3, and the oil F is prevented from leaking into the atmosphere from the breathing hole 51. do not have.
  • the capacity of the pressure accumulating portion 10 is the largest in the stroke range of the piston 4, and the pressure of the gas G is reduced.
  • the breathing hole 51 moves in a direction away from the connecting body 3, that is, to the right, compared to when the pressurizing device 1 is in the contracted state, so the breathing hole 51 is not blocked. Further, the liquid level of the oil F is located below the through hole 3A of the connecting body 3.
  • the actuated body W can be pressurized with a substantially constant force within the stroke range of the piston 4 without supplying fluid from the outside using an accumulator, a pump, etc., and the pressurizing device 1 can be configured compactly.
  • the stepped piston 4 has a diameter L1 smaller than the diameter L2, and the pressure in the small diameter portion 42 is high and does not change much and is maintained at a high pressure. It can be made smaller than in the case of a piston where the gas G is at a low pressure (same pressure as the space 11, etc.).
  • the stroke of the piston 4 becomes smooth due to the oil F supplied to the gap between the outer peripheral surface of the small diameter portion 42 of the piston 4 and the inner peripheral surface 3a of the connecting body 3. A portion of the oil F remaining in the gap between the outer peripheral surface of the small diameter portion 42 and the inner peripheral surface 3a of the connecting body 3 flows into the annular recesses 42a and 42c, contributing to the lubricity of the stroke of the piston 4.
  • the oil F in the space 11 enters the gap between the outer circumferential surface 3b of the connecting body 3 and the inner circumferential surface 5a of the cylindrical body 5 when the cylindrical body 5 moves to the left as described later.
  • the oil F remaining in the gap allows the cylindrical body 5 to move smoothly.
  • the stroke of the piston 4 is stabilized. According to this, the actuated object W can be pressurized straight to the right by the piston 4 while the end surface 41a of the large diameter portion 41 is in surface contact with the pressurized surface W1 of the actuated object W.
  • the effecting body W can be smoothly deformed or moved.
  • the oil F remaining in the gap between the outer circumferential surface of the small diameter portion 42 and the inner circumferential surface 3a of the connecting body 3 allows the piston 4 to stroke smoothly.
  • the oil F in the space 11 enters the gap between the outer circumferential surface 3b of the connecting body 3 and the inner circumferential surface 5a of the cylindrical body 5, and the movement of the cylindrical body 5 becomes smooth.
  • a portion of the oil F remaining in the gap between the outer circumferential surface 3b of the connecting body 3 and the inner circumferential surface 5a of the cylindrical body 5 flows into the annular recess 3d and contributes to the lubricity of the stroke of the cylindrical body 5.
  • the breathing hole 51 is not blocked throughout the entire stroke of the piston 4, the pressure within the space 11 can be prevented from increasing, and the piston 4 can be stably stroked.
  • the pressure of the pressure accumulating part 10 acting on the small diameter part 42 is dispersed in the large diameter part 41 and transmitted to the actuated body W, so the piston 4 It is possible to reduce the change in the pressing force applied to the object W in the stroke range. Further, oil F is held in a space 11 within the cylindrical body 5, and the oil F allows the piston 4 to stroke smoothly.
  • the cylindrical body 5 is capable of sliding on the outer circumferential surface 3b of the connecting body 3. According to this, the piston 4 is guided in the moving direction by the small diameter portion 42 inside the connecting body 3 and the cylindrical body 5 outside the connecting body 3, so that the stroke of the piston 4 is stabilized.
  • a breathing hole 51 is formed above the cylindrical body 5. According to this, when the piston 4 moves, the pressure in the space 11 can be suppressed from rising or falling due to the breathing hole 51, so the piston 4 moves smoothly.
  • the breathing hole 51 is provided at a position where it will not be blocked when the cylindrical body 5 is inserted into the connecting body 3 the most. According to this, the breathing hole 51 is not blocked throughout the entire stroke of the piston 4, so that the pressure in the space 11 can be prevented from increasing due to the stroke of the piston 4.
  • the oil F is held so that the liquid level of the oil F is at least at the height of the small diameter portion 42 when the cylindrical body 5 is inserted into the connecting body 3 the most. According to this, since the oil F is supplied to the gap between the connecting body 3 and the small diameter portion 42, the piston 4 moves smoothly.
  • the cylindrical body 5 is attached to the large diameter portion 41 and extends parallel to the left side along the small diameter portion 42, the overall length of the pressurizing device 1 is short and compact.
  • the left end of the cylindrical body 50 is connected to the right end of the connecting body 30 in a sealed manner by screwing.
  • the connecting body 30 and the cylindrical body 50 may be integrally formed of the same member.
  • the breathing hole 510 of the cylindrical body 50 is provided at the upper left side of the cylindrical body 50, and is closed by a water-repellent ventilation sheet 510s. Further, an annular lid body 520 is attached to the right end portion of the cylindrical body 50.
  • the piston 40 is composed of a large diameter portion 410, a small diameter portion 420, and a medium diameter portion 430.
  • the medium diameter portion 430 has a cylindrical shape and extends from the center of the large diameter portion 410 toward the right side.
  • the medium diameter portion 430 has a smaller diameter than the large diameter portion 410 and has a larger diameter than the small diameter portion 420.
  • the medium diameter portion 430 is inserted into the through hole 520A of the lid 520.
  • a locking member 12 which is disposed on the right side of the lid body 520 and has a U-shape in cross section and serves as a movement restricting portion, is fitted and fixed to the right end portion of the medium diameter portion 430.
  • the flat right surface 12a of the locking member 12 is in surface contact with the pressurized surface W1 of the object W to be operated.
  • the breathing hole 510 of the cylindrical body 50 is arranged on the left side of the large diameter portion 410 of the piston 40.
  • the oil F can be supplied to the gap between the small diameter portion 420 and the connecting body 30.
  • the oil F enters the gap between the inner circumferential surface of the cylindrical body 50 and the outer circumferential surface of the large diameter portion 410, allowing the piston 40 to stroke smoothly.
  • Examples 1 and 2 a configuration in which gas is accumulated in the pressure accumulator is exemplified, but a liquid such as oil or a mixture of a liquid and a gas may be sealed in the pressure accumulator.
  • the stroke of the piston is guided by the cylindrical body and the small diameter part, but the invention is not limited to this, and another guide body may be provided in addition to the cylindrical body and the small diameter part.
  • another guide body may be provided in addition to the cylindrical body and the small diameter part.
  • a guide hole may be provided in the cylinder portion
  • a guide pin may be provided in the piston
  • the stroke of the piston may be guided by sliding the guide hole and the guide pin in the stroke direction.
  • the cylindrical body may be guided by the outer periphery of the connection body.
  • the large diameter portion of the piston was in direct contact with the object to be actuated, but a separate member may be interposed between the large diameter portion of the piston and the object to be actuated.
  • the breathing holes 51, 510 are provided in the cylindrical bodies 5, 50, but the breathing holes 51, 510 are not provided, and the Alternatively, pressure changes in the space 11 may also be utilized.
  • the annular recess 3d and the annular recesses 42a and 42c are spaces for fluid reservoirs, but there are parts in the space that have a bearing function, parts that improve lubricity, and parts that suppress eccentricity. You may insert parts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
PCT/JP2023/022372 2022-06-17 2023-06-16 加圧装置 Ceased WO2023243704A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202380045545.1A CN119325536A (zh) 2022-06-17 2023-06-16 加压装置
US18/872,725 US12480536B2 (en) 2022-06-17 2023-06-16 Pressure applying device
EP23823994.1A EP4542055A4 (en) 2022-06-17 2023-06-16 PRESSURIZATION DEVICE
JP2024528965A JPWO2023243704A1 (https=) 2022-06-17 2023-06-16

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-098429 2022-06-17
JP2022098429 2022-06-17

Publications (1)

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WO2023243704A1 true WO2023243704A1 (ja) 2023-12-21

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PCT/JP2023/022372 Ceased WO2023243704A1 (ja) 2022-06-17 2023-06-16 加圧装置

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US (1) US12480536B2 (https=)
EP (1) EP4542055A4 (https=)
JP (1) JPWO2023243704A1 (https=)
CN (1) CN119325536A (https=)
WO (1) WO2023243704A1 (https=)

Citations (4)

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US12480536B2 (en) 2025-11-25
EP4542055A1 (en) 2025-04-23

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