WO2006120764A1 - 加圧装置 - Google Patents
加圧装置 Download PDFInfo
- Publication number
- WO2006120764A1 WO2006120764A1 PCT/JP2005/015890 JP2005015890W WO2006120764A1 WO 2006120764 A1 WO2006120764 A1 WO 2006120764A1 JP 2005015890 W JP2005015890 W JP 2005015890W WO 2006120764 A1 WO2006120764 A1 WO 2006120764A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- output shaft
- input shaft
- fluid
- pressure
- fluid chamber
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
- B30B1/323—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure using low pressure long stroke opening and closing means, and high pressure short stroke cylinder means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/161—Control arrangements for fluid-driven presses controlling the ram speed and ram pressure, e.g. fast approach speed at low pressure, low pressing speed at high pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
- F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
-
- 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
- F15B15/088—Characterised by the construction of the motor unit the motor using combined actuation, e.g. electric and fluid actuation
-
- 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
- F15B15/18—Combined units comprising both motor and pump
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/216—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/421—Flow control characterised by the type of actuation mechanically
- F15B2211/424—Flow control characterised by the type of actuation mechanically actuated by an output member of the circuit
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/455—Control of flow in the feed line, i.e. meter-in control
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/775—Combined control, e.g. control of speed and force for providing a high speed approach stroke with low force followed by a low speed working stroke with high force, e.g. for a hydraulic press
Definitions
- the present invention relates to a pressure device that achieves both high-speed movement of an output shaft and high thrust pressure.
- the pressure device is coaxial with the fixed portion 10, the output shaft 20 supported by the fixed portion 10 so as to be axially slidable, and the output shaft 20.
- Control mechanism for controlling operation of the fluid pressure mechanism 60 and the fluid pressure mechanism 60 which increases the energizing force of the input shaft 30 by the principle of Pascal and transfers it to the output shaft 20 by connecting the shaft 20 and the input shaft 30 And a mechanism 70.
- a pressure receiving piston 201 is formed on the output shaft 20.
- a first fluid chamber A1 and a second fluid chamber A2 which are divided in the axial direction by the pressure receiving piston 201 are defined between the fixed portion 10 and the output shaft 20.
- the first fluid chamber A1 and the second fluid chamber A2 are communicated with each other by a communication passage 201a formed in the pressure receiving piston 201. Therefore, the pressure receiving piston 201 and the output shaft 20 can freely slide relative to the fixed portion 10 which hardly receives the resistance due to the fluid filled in both fluid chambers Al, A2.
- the output shaft 20 can move at high speed by the drive mechanism 40 in a state of being connected to the input shaft 30 by the connection mechanism 50.
- a pressure piston 301 is formed on the input shaft 30.
- a third fluid chamber A3 pressurized by the pressurizing piston 301 is formed between the output shaft 20 and the input shaft 30.
- the third fluid chamber A3 is in communication with the second fluid chamber A2 via a communication hole 202a. Therefore, the second fluid chamber A2 and the third fluid chamber are disconnected by releasing the connection by the connection mechanism 50 and closing the communication passage 201a.
- A3 functions as a fluid pressure mechanism 60 capable of transmitting the bias of the input shaft 30 to the output shaft 20.
- the pressurizing area of the pressurizing piston 301 is set to be sufficiently smaller than the pressure receiving area of the pressure receiving piston 201. Therefore, the bias of the input shaft 30 is increased by Pascal's principle to pressurize the output shaft 20 with high thrust.
- the first fluid chamber A1 is compressed by the pressure receiving piston 201 and the internal pressure rises.
- a pressure absorbing piston 101 for absorbing the increase in the internal pressure is provided.
- the connecting mechanism 50 includes a connecting hook 501 fixed on the upper surface of the input shaft 30, an engaging portion 502 recessed on the upper surface of the output shaft 20, and a connecting hook return fixed above the fixed portion 10. It is equipped with a roller 5 03.
- a claw is formed at the rotational end of the connection hook 501.
- the output shaft 20 and the input shaft 30 are coupled so as not to move relative to each other.
- the output shaft 20 can be moved at high speed by moving the input shaft 30 downward.
- a predetermined position for example, a position just before the tip of the output shaft 20 abuts against the object to be pressurized
- the output shaft 20 moves below the input shaft 30 and stops.
- the connecting hook 501 is disengaged from the engaging portion 502 and falls inward by the biasing force of a panel (not shown) provided around the rotation axis, and as a result, the output shaft 20 and the input shaft 30. Is disconnected.
- the connection hook 501 is engaged with the engagement portion 502 by the connection hook return roller 503 when the input shaft 30 returns to the uppermost end (FIG. 11) where the input shaft 30 becomes the home position after the series of pressing operations are completed. And restore the connection between the output shaft 20 and the input shaft 30.
- the control mechanism 70 comprises a pin-shaped valve body 701 and an auxiliary valve body 702.
- the valve body 701 is slidably supported by a support hole 202 provided in the output shaft 20, and the auxiliary valve body 702 is slidably supported by a support shaft 203 provided in the output shaft 20.
- the valve body 701 is retracted so as to open the communication passage 201a.
- the auxiliary valve body 702 has a built-in magnet (not shown). Communication between the second fluid chamber A2 and the third fluid chamber A3 is shut off by force.
- the control mechanism 70 starts the operation of the fluid pressure mechanism 60 by releasing the connection by the connection mechanism 50 and moving the input shaft 30 downward.
- the downward movement of the input shaft 30 causes the pressure piston 301 to raise the fluid pressure of the third fluid chamber A3 closed by the auxiliary valve body 702.
- the valve body 701 is pushed down to close the communication passage 201a.
- the auxiliary valve body 702 is pushed up to bring the second fluid chamber A2 into communication with the third fluid chamber A3.
- the input shaft 30 having the small pressure area 1 and the pressure piston 301, and the pressure area!
- the output shaft 20 having the pressure receiving piston 201 are fluidly connected. It is connected, and it becomes possible to increase the power of the input shaft 30 according to Pascal's principle and transmit it to the output shaft 20.
- the magnet contained in the auxiliary valve body 702 has an adsorption force such that the auxiliary valve body 702 causes the second fluid chamber A2 and the third fluid chamber A3 to communicate with each other after the valve body 701 closes the communication passage 201a. Is set.
- a pin (not shown) is provided upright on the upper surface of the auxiliary valve body 702. When the output shaft 20 returns to the home position, the pin abuts on the upper lid 102 of the fixed portion 10, and the auxiliary valve body 702 blocks the communication between the first fluid chamber A1 and the second fluid chamber A2. It is pushed down to the initial position.
- the output shaft 20 and the input shaft 30 are connected by the connection mechanism 50, and the input shaft 30 is moved to a predetermined position at high speed. Move it. Next, by stopping the input shaft 30 at the predetermined position, as shown in FIG. 12, the connecting hook 501 is rotated, and the connection between the output shaft 20 and the input shaft 30 is released. Thereafter, when the downward movement of the input shaft 30 is resumed, the internal pressure of the third fluid chamber A3 is increased by the pressurization by the pressurizing piston 301.
- the control mechanism 70 is activated by the increase in the internal pressure of the third fluid chamber A3, and as shown in FIG.
- the fluid compressed inside the first fluid chamber A1 pushes back the valve body 701 by the reaction force of the pressure absorbing piston 101, and opens the communication path 201a.
- This enables fluid movement from the second fluid chamber A2 to the first fluid chamber A1. Therefore, By moving the force axis 30 upward, the output axis 20 can be returned to the home position.
- the auxiliary valve body 702 is pushed down to an initial position at which communication between the second fluid chamber A2 and the third fluid chamber A3 is shut off when the output shaft 20 returns to the home position.
- Patent Document 1 International Patent Publication WO2002Z055291
- the auxiliary valve body 702 provided to shut off the communication between the second fluid chamber A2 and the third fluid chamber A3 complicates the structure of the control mechanism 70 and increases the risk of failure. It had become.
- the output shaft 20 in order to return the auxiliary valve body 702 to the initial position for blocking the communication between the second fluid chamber A2 and the third fluid chamber A3, the output shaft 20 must be always returned to the home position. Therefore, if it is not necessary to retract the output shaft 20 largely, for example, even if it is not necessary to make a large gap between the output shaft 20 and the object to be pressurized, it is necessary to return the output shaft 20 to the home position. As a result, time loss occurred.
- valve body 701 is held by the sliding resistance with the support hole 202. If the sliding resistance becomes too large, there is a possibility that the auxiliary valve body 702 operates earlier than the valve body 701 at the time of switching to high speed moving force and high thrust pressurization, and the communication path 201a can not be closed. Therefore, at the time of manufacture, it was necessary to strictly control the dimensional relationship between the valve body 701 and the support hole 202.
- valve body 701 is pushed back by the fluid pressure in the first fluid chamber A1 after the high thrust pressurization is finished, but the valve body 701 is formed in a pin shape to be inserted into the communication passage 201a.
- the pressure receiving area is small. Therefore, the valve body 701 may not return to the initial position only with the fluid pressure in the first fluid chamber A1. That is, the opening of the communication passage 201a may be incomplete, and the return of the output shaft 20 accompanied by the fluid movement from the second fluid chamber A2 to the first fluid chamber A1 may be delayed o
- the present invention is configured so that the control mechanism for controlling the operation of the fluid pressure mechanism can be operated simply while being simple in structure and easy to manufacture. Also, Provided is a pressure device capable of appropriately changing the operating stroke without the need to return the force axis to the home position.
- a fixed part an output shaft slidably supported in the axial direction on the fixed part, and a slide coaxially with the output shaft on the output shaft.
- An input shaft that can be supported, a drive mechanism that can move the input shaft in the axial direction, a connection mechanism that can connect the output shaft and the input shaft so as not to move relative to each other, the output shaft and the input A shaft is fluidly connected at all times, and when the output shaft and the input shaft move relative to each other, the bias of the input shaft is increased by Pascal's principle to be transmitted to the output shaft, and the fluid pressure mechanism,
- the connection by the connection mechanism is performed, the fluid communication mechanism that maintains the communication with the fluid pressure mechanism is maintained open, and when the connection by the connection mechanism is released, the fluid is biased by the input shaft.
- a pressure device characterized in that it comprises a control mechanism that blocks the external force the fluid pressure mechanism to close the communication passage.
- the invention described in claim 2 is a fixing portion having a hollow cylindrical body in which a first through hole and a second through hole are formed at both ends in the cylinder axial direction, the first through hole, and the first through hole
- An output shaft defining a first fluid chamber and a second fluid chamber between the fixed portion and a hollow cylindrical body slidably supported by the two through holes; and an output shaft formed with the output shaft;
- a fluid pressure chamber and a second fluid chamber are separated, and a communication passage communicating the first fluid chamber and the second fluid chamber is provided.
- a pressure receiving piston is slidably supported on the output shaft, and the output shaft is And an input shaft forming a third fluid chamber constantly communicating with the second fluid chamber, and formed on the input shaft, and expanding and contracting the third fluid chamber along with the reciprocation of the input shaft.
- a pressing piston having a pressing area smaller than the pressure receiving area of the pressure receiving piston, and a drive mechanism capable of moving the input shaft in the sliding direction
- a connection mechanism capable of connecting the output shaft and the input shaft so as not to move relative to each other, and the connection by the connection mechanism while maintaining the opening of the communication passage, and the connection by the connection mechanism being connected.
- control mechanism which detects the flow of the fluid pushed out from the third fluid chamber to the second fluid chamber by the biasing of the input shaft when it is released, and closes the communication path.
- control mechanism comprises a valve body that operates with the pressure of the flow to close the communication path.
- control mechanism includes an input unit that receives the pressing force to drive the valve body, and the input unit is disposed to face the flow.
- the invention described in claim 5 is characterized in that the input unit is exposed on the bottom surface of a recess disposed to face the flow. I will provide a.
- control mechanism includes an input unit that receives the pressing force to drive the valve body, and the input unit is disposed at an end of the flow passage path.
- a pressure device according to claim 3 is provided.
- the invention described in claim 7 provides the pressure device according to claim 6, characterized in that the input section is exposed to the bottom surface of the recess formed at the end. .
- valve body includes a closing portion that contacts the opening of the communication passage so as to cover the opening of the communication passage by the action of the pressing force and closes the communication passage.
- the invention described in claim 9 provides the pressurizing device according to claim 8, characterized in that the closing portion is set to have a larger area than the opening.
- the invention described in claim 10 provides the pressurizing device according to claim 8 or 9, characterized in that the surface covering the opening is formed in a concave shape. .
- valve body is slidably supported by a support formed on the output shaft, and is slid by the pressing force to close the communication passage.
- a pressure device according to any one of claims 4 to 10, characterized in that.
- control mechanism holds the valve body so as to maintain the opening of the communication passage until the valve body receives a pressing force of a predetermined value or more.
- the pressure device according to any one of claims 3 to 11, comprising a member.
- the invention described in claim 13 provides the pressurizing device according to claim 12, wherein the holding member is a magnet.
- the invention described in claim 14 provides the pressurizing device according to any one of claims 4 to 13, characterized in that the input unit is integrally formed on the valve body. Do.
- the invention described in claim 15 is characterized in that a fixed part, an output shaft slidably supported in the axial direction on the fixed part, and a shaft that slides coaxially with the output shaft.
- An input shaft that can be supported, a drive mechanism that linearly moves the input shaft axially, a connection mechanism that connects the output shaft and the input shaft so as not to move relative to each other, the output shaft and the input shaft
- a fluid pressure mechanism capable of increasing the bias of the input shaft by Pascal's principle and transmitting the same to the output shaft when the output shaft and the input shaft move relative to each other.
- the output shaft and the input shaft are always connected by the fluid pressure mechanism, and the relative movement of the output shaft and the input shaft causes the fluid in the fluid pressure mechanism to be externally transmitted.
- the fluid pressure mechanism is cut into an operable state by detecting the flow when it is pushed out.
- An input shaft that can be supported, a drive mechanism that linearly moves the input shaft axially, a connection mechanism that connects the output shaft and the input shaft so as not to move relative to each other, the output shaft and the input shaft
- a fluid pressure mechanism capable of increasing the bias of the input shaft by Pascal's principle and transmitting the same to the output shaft when the output shaft and the input shaft move relative to each other.
- the output shaft and the input shaft are always connected by the fluid pressure mechanism, and the relative movement of the output shaft and the input shaft causes the fluid in the fluid pressure mechanism to be externally transmitted. Switching the fluid pressure mechanism into an operable state when being pushed out. Providing pressure device.
- the output shaft and the input shaft are always fluidly connected, and are generated along with the relative movement of the input shaft and the output shaft.
- Operation of the fluid pressure mechanism (increase of biasing force by Pascal's principle) by Start it. Therefore, the fluid pressure mechanism is activated by detecting the relative movement of the input shaft and the output shaft by raising the internal pressure of the third fluid chamber while the fluid connection between the output shaft and the input shaft is shut off. It is not necessary to provide the auxiliary valve body or to return the output shaft to the home position in order to return the auxiliary valve body to the initial position where it is possible to detect the release of connection. As a result, there is an excellent effect that the device structure can be made simple and easy to manufacture. Also, in order to ensure the operation of the fluid pressure mechanism, the operating stroke of the output shaft may not be made larger than necessary.
- the pressurizing device according to claim 3 operates the fluid pressure mechanism by the pressing force of the fluid flow. Therefore, in addition to the effects exhibited by the pressurizing device according to claim 1 or 2, such as electricity etc. It is possible to switch to high thrust pressurization without using an external power, and has an excellent effect that the device structure can be easily configured.
- the control mechanism is provided with the input unit for receiving the pressing force by the fluid flow, and the input unit is disposed to be opposed to the fluid flow.
- the excellent effect of more reliably operating the control mechanism is exhibited.
- the pressurizing device according to claim 5 exposes the input portion on the bottom surface of the recess disposed to face the flow of the fluid, so that the effect exerted by the pressurizing device according to claim 4 is exhibited.
- the control mechanism it is possible to make the control mechanism operate more reliably by making the pressure exerted by the fluid flow stronger, and thus it is excellent.
- control mechanism is provided with the input unit for receiving the pressing force by the fluid flow, and the input unit is disposed at the end of the flow path of the fluid flow.
- the control mechanism is provided with the input unit for receiving the pressing force by the fluid flow, and the input unit is disposed at the end of the flow path of the fluid flow.
- the pressurizing device according to claim 7 exposes the input section at the bottom of the recess disposed at the end of the passage of the fluid flow, so that the effect exerted by the pressurizing device according to claim 6 is exhibited.
- the pressure exerted by the flow of fluid can be made more powerful to ensure that the operation of the control mechanism can be made more reliable.
- valve body is covered with the opening of the communication passage by the action of the pressing force.
- the pressure device according to any one of claims 4 to 7 there is provided an excellent feature that closing of the communication passage is surely performed. Play an effect.
- the closing portion is set to have a larger area than the opening. Therefore, in addition to the effects exhibited by the pressurizing device according to claim 8, high thrust pressure is applied. At the end of this process, the fluid flowing from the outside to the inside of the fluid pressure mechanism (from the first fluid chamber to the second fluid chamber) is reliably pushed back to the valve body, and the communication path can be completely opened. Play.
- the height is high.
- the fluid flowing from the outside of the fluid pressure mechanism to the inside acts on the concave surface having a large pressure receiving area and pushes up the closing portion with a greater force. In this case, the communication channel can be more reliably opened.
- valve body is slidably supported by the support portion formed on the output shaft, and is slid by a pressing force to close the communication passage.
- the control mechanism includes a holding member for holding the valve body so as to maintain the opening of the communication passage until the valve body receives a pressing force equal to or more than a predetermined value. Therefore, in addition to the effects exerted by the pressure device according to any one of claims 3 to 11, the communication path is inadvertently closed to cause an excellent effect that malfunction does not occur.
- the holding member is formed of a magnet, in addition to the effects exhibited by the pressurizing device according to claim 12, the holding structure is compared to when using a panel or the like. It has an excellent effect of reducing the risk of failure or malfunction.
- FIG. 1 is a pressure device according to the present embodiment, and is a cross-sectional view showing a state before high speed movement of an output shaft is started.
- FIG. 2 is a pressure device according to the present embodiment, and is a cross-sectional view showing a state before the high speed movement of the output shaft is started.
- FIG. 3 is a pressure device according to the present embodiment, showing a state immediately after the end of high-speed movement of the output shaft.
- FIG. 4 is a pressure device according to the present embodiment, showing a state immediately after the start of high thrust pressurization of an output shaft.
- FIG. 5 is a pressure device according to the present embodiment, showing a state immediately after the end of high thrust pressurization of the output shaft.
- FIG. 6 A diagram for explaining the operation of the control mechanism when the output shaft shifts to high-speed moving force high thrust pressurization in the pressurizing device according to the present embodiment.
- FIG. 7 is a view showing a state when the communication passage is opened after the end of high thrust pressurization of the output shaft in the pressurizing device according to the present embodiment.
- FIG. 8 is a view showing the flow of fluid when the input shaft moves upward with the output shaft and returns to the original state, in the pressurizing device according to the present embodiment.
- FIG. 9 An enlarged view showing a state in which a connecting mechanism connects an output shaft and an input shaft in the pressure device according to the present embodiment.
- FIG. 10 is an enlarged view showing a state where the connection mechanism has released the connection between the output shaft and the input shaft in the pressure device according to the present embodiment.
- FIG. 11 A sectional view showing a conventional pressurizing device and showing a state before the high speed movement of the output shaft is started.
- FIG. 12 A sectional view showing a state of the conventional pressurizing device immediately after the end of the high speed movement of the output shaft.
- FIG. 13 A cross-sectional view showing a state immediately after the end of high thrust pressurization of the output shaft, which is a conventional pressurizing device.
- FIGS. 1 to 10 are cross-sectional views showing an example of a pressure device embodying the present invention.
- Figure 1 and 2 is a view showing a state before the high speed movement of the output shaft 2 is started
- FIG. 1 is a sectional view taken along the line AA of FIG. 2
- FIG. 2 is a view corresponding to the sectional view taken along the line BB of FIG. 3 to 5 show a cross section corresponding to FIG. 1
- FIG. 3 shows a state after the high speed movement of the output shaft 2 ends
- FIG. 4 shows a state immediately after the start of high thrust pressurization of the output shaft 2
- FIG. 5 shows the state immediately after the end of the high thrust pressurization of the output shaft 2.
- FIG. 1 and 2 is a view showing a state before the high speed movement of the output shaft 2 is started
- FIG. 1 is a sectional view taken along the line AA of FIG. 2
- FIG. 2 is a view corresponding to the sectional view taken along the line BB of FIG. 3
- FIG. 6 is a view for explaining the operation of the control mechanism 7 when the output shaft 2 shifts to high thrust pressure application.
- FIG. 7 is a view showing a state in which the communication passage 22a is opened after the end of high thrust pressurization of the output shaft 2, and
- FIG. 8 shows the input shaft 3 moving upward together with the output shaft 2. It is a figure which shows the flow of the fluid at the time of returning to a state.
- 9 and 10 are enlarged views of the connecting mechanism 5, FIG. 9 shows a state in which the output shaft 2 and the input shaft 3 are connected by the connecting mechanism 5, and FIG. 10 shows that the connection between the output shaft 2 and the input shaft 3 is released. Show the condition.
- the directions in the upper, lower, left, and right directions in the drawing may be used for convenience.
- the pressure device may be installed in a different orientation, for example, sideways.
- the pressure device includes a fixed portion 1, an output shaft 2 which is inserted into the fixed portion 1 and axially slidably supported, and an output shaft.
- An input shaft 3 inserted in 2 and slidably supported coaxially with the output shaft 2, a drive mechanism 4 capable of reciprocating the input shaft 3 in the axial direction, an output shaft 2 and an input
- the output mechanism 2 and the input shaft 3 are always fluidly connected so that the shaft 3 can not be moved relative to the shaft 3 and the input shaft 3 is released from the connection mechanism 5.
- a fluid pressure mechanism 6 capable of increasing the bias of the shaft 3 according to Pascal's principle and transmitting it to the output shaft 2, a control mechanism 7 for controlling communication between the inside and the outside of the fluid pressure mechanism 6, and a fixed portion
- a pressure absorbing mechanism 8 for releasing the pressure of the fluid chamber (first fluid chamber A1) connected to 1 and compressed in the high thrust pressurization of the output shaft 2; Yes and composed.
- the output shaft 2 by connecting the input shaft 3 with the connection mechanism 5 so as not to move relative to the output shaft 2, the output shaft 2 can be pressurized object W
- the output shaft 2 can be moved at high speed with low thrust until just before coming into contact with the shaft.
- the connection mechanism 5 By releasing the connection by the connection mechanism 5 and moving the input shaft 3 relative to the output shaft 2, the output shaft 2 can be pressurized with high thrust while being at low speed.
- it can perform substantially the same function as a pressure device that achieves high speed and high thrust using a large-capacity motor by performing low-thrust high-speed movement and low-speed high-thrust pressurization. is there.
- the fixing portion 1 is fixed to the hollow cylindrical fixing portion main body 11 and the fixing portion main body 11 as shown in FIGS. 1 and 2 and in the cylinder axial direction (vertical direction in the drawing) of the fixing portion main body 11. It has a plurality of extending guide rods 12 and a plate-like bearing 13 fixedly supported on the upper end of the guide rods 12, and is installed on the fixed side.
- the fixing portion main body 11 includes a cylindrical body 111 having a circular inner cross section and a straight tubular shape, and a first lid 112 and a second lid 113 attached so as to cover the openings at the upper and lower ends of the cylindrical body 111.
- a first through hole 11 a and a second through hole l ib for slidingly supporting the output shaft 2 are formed in the first lid 112 and the second lid 113.
- the first through hole 11a and the second through hole lib are smaller in diameter than the inner circumferential diameter of the cylindrical body 111, and each inner circumferential surface has a plurality of circles at intervals in the axial direction of the cylinder.
- the circumferential groove is engraved. In each circumferential groove, a sealing material made of resin and having a U-shaped cross section and a sliding material made of metal are fitted.
- a plurality of guide rods 12 are erected in the second lid 113 so as to surround the second through holes l ib and extend upward.
- the guide rod 12 fixedly supports the bearing portion 13 at its upper end, and slidably supports the sliding portion 23 attached to the upper portion of the output shaft 2 at its midway portion to ensure smooth vertical movement of the output shaft 2 .
- the bearing portion 13 is a plate-like member whose peripheral portion is fixedly supported by the guide rod 12 and a through hole 13a is formed in the central portion. A roller bearing 131 is attached to the through hole 13a.
- the ball screw 41 that constitutes the drive mechanism 4 is rotatably supported by this.
- the servomotor 43 is connected and fixed to the bearing portion 13 as shown in FIG.
- the output shaft 2 has a hollow cylindrical output shaft body 21 and a ring-like shape including a plurality of communicating passages 22 a integrally formed in an axial middle portion of the output shaft body 21 and penetrating in the cylinder axial direction. It has a pressure receiving piston 22 and a plate-like sliding portion 23 attached to the rear end (upper end in the figure) of the output shaft main body 21 and having a through hole 23a in the center.
- the output shaft main body 21 is an output member that performs pressing processing by pressing the tip end 21e thereof against the object W to be pressurized, as shown in FIGS. 4 and 5.
- the outer peripheral surface 21a of the output shaft main body 21 is slidably supported by the first through hole 11a and the second through hole lib, and the outer peripheral surface 21a and the inner peripheral surface 1 lc of the fixing portion main body 11 (cylindrical body 111) And define a first fluid chamber A1 and a second fluid chamber A2.
- the first fluid chamber A1 and the second fluid chamber A2 are filled with fluid (oil).
- the fluid is a sealing material fitted on the inner peripheral surface of the first through hole 11a and the second through hole lib, and is sealed so as not to leak to the outside of the fixed portion main body 11.
- a communication hole 21d is formed on the side surface of the output shaft main body 21 above the pressure receiving piston 22 to connect the second fluid chamber A2 and a third fluid chamber A3 described later.
- a plurality of communication holes 21 d are formed to correspond to each of the communication passages 22 a provided at predetermined intervals in the circumferential direction of the pressure receiving piston 22.
- the pressure receiving piston 22 is formed so that the outer peripheral surface 22 b thereof extends along the inner peripheral surface 11 c of the fixed portion main body 11 so as to protrude in the outer diameter direction from the outer peripheral surface 21 a of the output shaft main body 21.
- One fluid chamber A1 and a second fluid chamber A2 are divided.
- a seal material and a sliding material are fitted on the outer peripheral surface 22b of the pressure receiving piston 22, and the contact surface force of the fixed portion main body 11 and the pressure receiving piston 22 is also a fluid between the first fluid chamber A1 and the second fluid chamber A2. Seal as leak free.
- the pressure receiving piston 22 when the pressure receiving piston 22 is slid up and down by relative sliding between the fixed portion 1 and the output shaft 2, the communication passage 22 a is opened to allow the inside of the first fluid chamber A 1 and the second fluid chamber A 2.
- the two fluids are movable relative to each other.
- the pressure receiving piston 22 is formed in the output shaft main body 21
- the inner peripheral surface 21c of the portion to be cut is narrowed to a smaller diameter than the inner peripheral surface 21b other than that portion.
- the sliding portion 23 is a plate-like body in which a through hole 23a is formed at the center, and is fixed to the upper end of the output shaft main body 21 by a bolt or the like.
- the through hole 23 a is provided for inserting the ball screw 41 and the fixing hook 51 of the coupling mechanism 5 fixed to the input shaft 3.
- a pivoting hook 52 which constitutes the connecting mechanism 5 together with the fixing hook 51 is fixed.
- a plurality of support holes 23 b for slidingly supporting the plurality of guide rods 12 described above are formed through the peripheral edge of the sliding portion 23.
- the upper end portion of the input shaft 3 abuts on the peripheral portion of the through hole 23 a of the sliding portion 23 when the input shaft 3 moves upward after the high thrust pressure application, and pushes up the output shaft 2. It is possible to
- the input shaft 3 includes a cylindrical input shaft main body 31 and an annular pressure piston 32 integrally formed on the upper portion of the input shaft main body 31.
- the input shaft main body 31 is a cylindrical body inserted into the output shaft main body 21.
- the outer peripheral surface 31 a of the input shaft main body 31 is slidably supported on the inner peripheral surface 21 c of the output shaft main body 21, and the outer peripheral surface 32 a of the integrally formed pressure piston 32 is slidingly supported on the inner peripheral surface 21 b of the output shaft main body 21. Be done.
- the input shaft 3 can be moved relative to the output shaft 2 in the axial direction, and the third fluid chamber A3 is formed between the outer peripheral surface 31a of the input shaft main body 31 and the inner peripheral surface 21b of the output shaft main body 21.
- Sealing material and sliding material are fitted on the inner peripheral surface 21 c of the output shaft main body 21 and the outer peripheral surface 32 a of the pressure piston 32 to seal the fluid in the third fluid chamber A 3 and to seal the input shaft main body 31. Ensure smooth sliding.
- the pressurizing piston 32 expands or compresses the third fluid chamber A3 by reciprocating the input shaft 3 in the vertical direction with respect to the output shaft 2.
- the third piston A3 is compressed by the pressure piston 32, and the fluid in the third liquid chamber A3 is transferred from the communication hole 21d to the second fluid. It can be pushed into room A2.
- the pressure area of the pressure piston 32 is set sufficiently smaller than the pressure receiving area of the pressure receiving piston 22, so The bias of 2 (input shaft 3) is increased by the principle of Pascal when it is transmitted to the pressure receiving piston 22 (output shaft 2).
- the driving mechanism 4 includes a ball screw 41 rotatably supported by the bearing portion 13, a ball bush 42 fixed to the inner portion of the input shaft main body 31 and combined with the ball screw 41, and a servomotor 43 coupled and fixed to the bearing portion 13. , And a belt 44 for transmitting the driving force of the servomotor 43 to the ball screw 41, and the input shaft 3 can be moved in the axial direction.
- the ball screw 41 is rotationally driven by the servomotor 43 by being combined with the ball bush 42 fixed to the input shaft 3 to reciprocate (linearly move) the input shaft 3 in rotation-linear motion.
- a grease supply unit 421 for supplying grease to the ball bush 42 is provided! /.
- the ball bush 42 is disposed at a position at which the central force of the input shaft main body 31 is also offset so as not to rotate the input shaft 3 together.
- the servomotor 43 is fixed to the bearing portion 13 and can reciprocate the input shaft 3 to stop it at any preset position.
- the belt 44 is a toothed belt wound around pulleys attached to the ball screw 41 and the servo motor 43, respectively.
- the connecting mechanism 5 includes a fixed hook 51 fixed to the upper surface of the input shaft 3 and a pivoting hook fixed rotatably on the upper surface of the sliding portion 23. And an engaging portion 53 fixed to the upper surface of the sliding portion 23 for maintaining the rotation hook 52 in a state of being engaged with the fixing hook 51.
- the coupling mechanism 5 can couple the output shaft 2 and the input shaft 3 so as not to move relative to each other by engagement of the fixed hook 51 and the pivot hook 52 as shown in FIG. Further, as shown in FIG. 10, the connection mechanism 5 can release the connection by the rotation of the rotation hook 52.
- the fixing hook 51 includes a substantially U-shaped fixing hook main body 511 serving as a first connecting member, and a return pin 512 erected on the upper surface of the fixing hook main body 511.
- the pivoting hook 52 includes a substantially U-shaped pivoting hook main body 521 as a second connecting member, and a support shaft 522 that rotatably fixes the pivoting hook main body 521.
- the fixed hook main body 511 and the pivoting hook main body 521 are fixed so that the C-shaped openings face each other, and as shown in FIG.
- the tip of the return pin 512 is the pivoting hook main body 521
- the lower surface 51 la of the upper end portion of the fixed hook main body 511 is engageable with the lower end portion 521 b of the opening portion of the rotating hook main body 521 at the upper end portion 521 a of the opening portion.
- the engagement ball 531 of the engagement portion 53 is engaged with the back of the rotation hook body 521 in a state in which the fixing hook 51 and the rotation hook 52 are engaged with each other.
- An engaged portion (recess) 521c is formed.
- the state force in which the engagement between the fixed hook main body 511 and the pivoting hook main body 521 is released also suppresses the resistance when the engaging ball 531 is engaged with the engaged portion 521c.
- the lower side of the engaged portion 521c is cut obliquely.
- the connection by the connection mechanism 5 can be restored by applying a slight force while preventing the connection from being released unless a large force is applied to a certain degree.
- the engaging portion 53 engages with the engaged portion 521c in a state where the fixed hook 51 and the rotating hook 52 are engaged as shown in FIG.
- the pressing force of the pressing member 532 which presses the engaging ball 531 and the engaging ball 531 against the back of the pivoting hook main body 521 so that the pivoting ball 52 is engaged with the fixing hook 51
- an adjusting bolt 533 for adjusting the holding force to be held in the closed state.
- the output shaft 2 can move at high speed to the position shown in FIG. 3 together with the input shaft 3.
- the servomotor 43 is used as a drive source for the input shaft 3, and it is not necessary to consider the overstroke of the output shaft as in the conventional pressure device described above, so setting of the stop position is easy. And can be done accurately.
- the output shaft 2 When the output shaft 2 is urged by the input shaft 3 from the state in which the output shaft 2 is in contact with the object W to be pressurized, the output shaft 2 is output shaft in the direction opposite to the moving direction of the input shaft 3. A reaction that raises 2 relatively occurs.
- the lower end 52 lb of the rotating hook main body 521 fixed to the output shaft 2 side by the action of the reaction force on the output shaft 2 is the upper end 51 la of the fixed hook main body 511 fixed to the input shaft 3 side. Be pushed down.
- the engaging ball 531 is disengaged from the engaged portion 521c, and as shown in FIG. 10, the pivoting hook main body 521 pivots so that its opening is directed downward.
- the pivoting hook main body 521 may be pivoted in the reverse direction by pushing up the upper end portion 521 a of the pivoting hook main body 52 1 with the tip of the return pin 512.
- connection mechanism 5 can detect that the output shaft 2 abuts on the object W to be pressed, and automatically release the connection between the output shaft 2 and the input shaft 3. Further, from the state where the connection by the connection mechanism 5 is released, the input shaft 3 is moved upward, and the fixing hook 51 fixed to the upper end of the input shaft 3 is brought into contact with the rotation hook 52 of the output shaft 2 Thus, the pivot hook 52 pivots in the reverse direction, and the connection between the output shaft 2 and the input shaft 3 can be automatically restored.
- the fluid pressure mechanism 6 includes a second fluid chamber A2 defined by the inner peripheral surface 11c of the fixed portion main body 11 and the outer peripheral surface 21a of the output shaft main body 21 and partitioned above the pressure receiving piston 22, and the input shaft main body 31.
- a second portion defined by the inner circumferential surface 21b of the output shaft main body 21 and formed below the pressure piston 32
- the three fluid chambers A3 are communicated with each other through a communication hole 21d formed in the output shaft main body 21 so that the output shaft 2 and the input shaft 3 are always fluidly connected.
- the fluid pressure mechanism 6 is set to be sufficiently smaller than the pressure area of the pressure piston 32 for pressurizing the third fluid chamber A3 and the pressure receiving area of the pressure receiving piston 22.
- the pressure receiving piston 22 is formed with the connecting passage 22a that connects the first fluid chamber A1 and the second fluid chamber A2, if the communication passage 22a is not closed, the pressure will be reduced. Even if pressurization is performed by the piston 32, the fluid filled in the inside (the second fluid chamber A2 and the third fluid chamber A3) of the fluid pressure mechanism 6 is not limited to the outside of the fluid pressure mechanism It is impossible to realize high thrust pressurization by Pascal's principle only by pushing it into one fluid chamber A1). Therefore, the communication passage 22a can be automatically opened and closed according to the connection state of the output shaft 2 and the input shaft 3 by the control mechanism 7 to be described next.
- the control mechanism 7 includes a valve body 71, a support portion 72, and a fluid path formation portion 73.
- the valve body 71 is held at the position where the communication path 22a is maintained in communication.
- the control mechanism 7 is generated inside the fluid pressure mechanism 6 when the liquid inside the fluid pressure mechanism 6 is pushed out by the biasing of the input shaft 3 when the connection by the connection mechanism 5 is released.
- the flow is detected, and the communication passage 22a is closed to shut off the fluid pressure mechanism 6 from the outside as shown in FIG. 4 to FIG. This enables high thrust pressure application based on Pascal's principle.
- the valve body 71 is operated by the pressure of the flow described above to close the communication passage 22 a, and is disposed inside the fluid pressure mechanism 6. As shown in FIG. 6, the valve body 71 has an axial input portion 711 that receives the action of the flow pressing force, and fluid pressure due to the action of the pressing force that the input portion 711 receives. And a plate-like closing portion 712 which comes in contact with the opening of the communication passage 22a from the inside of the mechanism 6 to close the communication passage 22a.
- the input portion 711 is slidably supported by the support hole 721 formed in the support portion 72, and the front end 71 la and the rear end 71 lb are exposed from the support hole 721.
- a closing portion 712 is fixed to the front end 71 la so as to face the communication passage 22a.
- the closing portion 712 is set to have a larger area than the opening of the communication passage 22a, and a surface facing the opening, that is, a closing surface 712a covering the opening is formed in a concave shape.
- the support portion 72 is integrally provided on the output shaft 2, and a support hole 721 for slidingly supporting the input portion 711 is formed therethrough.
- a recess 721a is formed around the opening where the rear end 71 lb of the input portion 711 is exposed.
- the rear end 7 l ib of the input portion 711 is exposed to the bottom surface of the recess 721 a.
- the fluid path forming portion 73 is integrally provided on the output shaft 2 and pushed out of the communication hole 21d by the biasing of the input shaft 3, as shown by the alternate long and short dash line in FIG. Form a passing route 73a that guides the end 71 lb to face.
- the input unit 711 is disposed at the end of the flow passage path 73a so as to face the flow.
- a magnet 722 is provided around the opening on the front end 71 la side of the input portion 711.
- the magnet 722 is a holding member that holds the valve body 71 so as to maintain the opening of the communication passage 22a by attracting the closing portion 712 with a magnetic force.
- the adsorption force by the magnet 722 is set so as to release the adsorption when a pressing force equal to or greater than a predetermined value generated by the flow acts on the valve body 71.
- the pressure absorbing mechanism 8 is a mechanism for releasing the fluid pressure of the first fluid chamber A1 compressed when the output shaft 2 is pressurized with high thrust.
- the pressure absorbing mechanism 8 is, as shown in FIG. 2, a cylindrical chamber case 81 connected to the fixed portion 1 by the first fluid pipe 8 la, and the inside of the chamber case 81 with a fourth fluid chamber A4.
- the air chamber A5 is provided in the middle of the chamber 1 piston 82 which can be slid in the cylinder axial direction, the chamber compressor 81 connected with the chamber 1 case 81 by the second fluid pipe 8 lb, and provided in the middle of the second fluid pipe 81b.
- the switching valve 84 for setting the air chamber A5 to either the open air state or the connection state with the air compressor 83.
- the fourth fluid chamber A4 is filled with a fluid (oil) and is in communication with the first fluid chamber A1.
- the air chamber A5 is filled with air and connected to the air compressor 83.
- the switching valve 84 normally opens the air chamber A5 in the connected state with the air compressor 83 when the force that opens the air chamber A5 to the atmosphere ends and the high pressure pressurization ends and the servomotor 43 stops driving. Replace. After switching, high pressure air is fed into the air chamber A5 to raise the internal pressure of the fourth fluid chamber A4 and the first fluid chamber A1 communicated therewith.
- the valve body 71 is pushed up by the increased internal pressure to open the communication passage 22a.
- valve body 71 opens the communication passage 22a by the adsorption force of the magnet 722.
- the output shaft 2 can move at high speed until just before the position shown in FIG.
- the relative movement of 3 and output shaft 2 pushes the fluid out of the third fluid chamber A3.
- the third fluid chamber A3 is in communication with the second fluid chamber A2, the first fluid chamber A1, and the fourth fluid chamber A4.
- the fourth fluid chamber A4 is freely expanded without resistance. Therefore, by pushing the fluid from the third fluid chamber A3, the flow of the force from the third fluid chamber A3 to the second fluid chamber A2, that is, the flow of the fluid from the inside to the outside of the fluid pressure mechanism 6 Occur.
- This flow is directed to the input unit 711 by being guided by an L-shaped passage 73 a of which the discharge port is provided downward, as shown by an alternate long and short dash line in FIG. Since the input portion 711 is disposed to face the flow at the end of the passage 73a, the closing portion receives the pressure of the flow directly and is slid downward and is fixed to the front end 711a. 712 closes so as to cover the communication passage 22a. Since the input portion 711 is exposed on the bottom surface of the recess 721 a, the flow led to the recess 721 a strongly acts on the input portion 711. Thus, the fluid pressure mechanism 6 is interrupted by the external force, and the bias of the input shaft 3 is increased by the Pascal principle. , High thrust can be applied to the output shaft 2.
- the switching valve 84 operates in conjunction with that, and the high pressure air is sent from the air compressor 83 to expand the air chamber A5.
- the fourth fluid chamber A4 and the first fluid chamber A1 are compressed, and the fluid pressure pushes the closing portion 712 (valve body 71) closing the communication passage 22a upward.
- the area of the closing portion 712 is set to be larger than that of the communication passage 22a, and the surface covering the opening of the communication passage 22a is formed to be concave! Push up the valve body 71 securely.
- the pushed-up valve body 71 is attracted by the magnet 722 embedded in the support portion 72, and is held in the state of communicating the communication path 22a.
- the servomotor 43 is reversely driven to drive the input shaft 3 upward, the upper end of the input shaft 3 is provided on the stop (the peripheral edge of the through hole 23 a of the sliding portion 23) provided on the output shaft 2. It moves to the point where it makes contact, that is, to a position just before high thrust pressurization is started.
- the fluid moves from the first fluid chamber A1 to the third fluid chamber A2 from the first fluid chamber A1 in order to move the pressure piston 32 upward to expand the third fluid chamber A3. Since the flow is in the direction of pushing up the valve body 71 as shown by the alternate long and short dashed line as shown by the alternate long and short dashed line, the valve body 71 does not operate in the closing direction.
- the motor 43 is rotated to move the input shaft 3 downward. Since the input shaft 3 is connected to the output shaft 2 by the connection mechanism 5 and the communication path 22a of the pressure receiving piston 22 formed on the output shaft 2 is opened!, The first fluid chamber A1 to the first The output shaft 2 is moved downward at a high speed while the fluid is transferred to the two fluid chamber A2.
- the fluid in the third fluid chamber A3 is pushed out by the pressure piston 32 when the input shaft 3 is further energized.
- the pressing force by the flow of the extruded fluid causes the valve body 71 of the control mechanism 7 to close the communication passage 22a as shown in FIG. 6, and the fluid pressure mechanism 6 as shown in FIG. Complete the switch to the ready state.
- the input shaft 3 When the input shaft 3 is energized from the state shown in FIG. 4, the input shaft 3 is further moved downward as shown in FIG.
- the biasing force of the input shaft 3 is transmitted to the pressure receiving piston 22 from the pressurizing piston 32 with a small pressurizing area via the fluid of the closed fluid pressure mechanism 6. That is, the biasing force of the input shaft 3 is increased according to the principle of Noscal, and the output shaft 2 is pressurized with high thrust.
- the output shaft 2 is pushed up by the input shaft 3 and returned to the initial state shown in FIG. Since the communication passage 22a secures the communication between the first fluid chamber A1 and the second fluid chamber A2, the output shaft 2 can return to its original position at high speed without receiving particularly large resistance. Thus, a series of operations by the pressure device according to the present embodiment are completed.
- the pressure device according to the present embodiment has the following feature points.
- the output shaft 2 and the input shaft 3 are always fluidly connected, and the flow of fluid generated as the input shaft 3 and the output shaft 2 move relative to each other, It is characterized in that the disconnection of the connection between the input shaft 3 and the output shaft 2 by the connection mechanism 5 is detected to start the operation of the fluid pressure mechanism 6 (increase of biasing force according to Pascal's principle).
- the output shaft is returned to the initial position (upper end) in order to return the initial position where the auxiliary valve body can shut off the fluid connection between the output shaft and the input shaft.
- this pressure device it is not necessary to return the output shaft 2 to such a position.
- the present pressurizing device is configured to generate the fluid generated as the input shaft 3 and the output shaft 2 move relative to each other. It is characterized in that the communication passage 22a is closed by directly driving the valve body 71 by the pressure force by the flow, and the fluid pressure mechanism 6 is switched to the operable state.
- the present pressurizing device has the feature that the input section 711 is exposed at the bottom of the passage 73 a on the bottom of the recess formed to face the flow of the fluid. .
- the pressing force by the fluid flow acts strongly on the input portion 711 and the closing of the communication passage 22a can be made more reliable.
- the present pressurizing device abuts on the pressure receiving piston 22 so as to cover the opening of the communication passage 22a by the action of the pressing force by the flow of the fluid in the valve body 71, and the communication passage 22a is reliably made.
- a plate-like closing part 712 to be closed it has the following features!
- the present pressurizing device is characterized in that the closing portion 712 is set to have a larger area than the opening of the communication passage 22a.
- the fluid inside the fluid pressure mechanism 6 can strongly close the closing portion 712 at the time of high thrust pressurization, and at the end of high thrust pressurization, pressing force by the fluid of the first fluid chamber A1 Can securely push back the closing portion 712 to reliably open the communication passage 22a.
- the present pressurizing device is characterized in that, in the closing portion 712, the closing surface covering the opening of the communication path 22a is formed in a concave shape having a larger pressure receiving area. Due to this feature point, at the end of high thrust pressurization, the pressing force by the fluid of the first fluid chamber A1 acts on the concave surface having a large pressure receiving area, and reliably pushes back the closing portion 712 with a larger force, 2a can be more reliably opened.
- the valve body 71 is slidably supported by the support portion 72 formed on the output shaft 2 and is slid by the pressing force of the fluid flow. Close the communication passage 22a It has the feature point of Due to this feature point, the valve body 71 can be simplified in structure and reduced in number of failures.
- the present pressurizing device is provided with a magnet as a holding member for holding the valve body 71 so as to maintain the opening of the communication passage 22a until the valve body 71 receives a pressing force equal to or more than a predetermined value. It has the feature of By this feature point, the communication passage 22a is prevented from being closed inadvertently to cause malfunction, and moreover, it is possible to reduce the risk of causing a failure in the holding member itself.
- the output shaft 2 is moved to the object to be pressurized W while the input shaft 3 is being moved downward while being coupled so as not to cause relative movement with the output shaft 2. If it is possible to automatically release the connection between the output shaft 2 and the input shaft 3 by detecting that it is in contact with it, it will have a feature point! By this feature point, the time for newly setting the start position of high thrust pressurization can be shortened, and even when the switching point moves due to the replacement of the object to be pressurized W, the setup replacement can be completed in a short time.
- the pressing device of the present pressing device rotates the fixing hook 51 itself using the reaction force. It is characterized in that it is moved and the connection by the connection mechanism 5 is released. By this feature point, it is possible to reduce the number of parts for which it is not necessary to separately provide parts for rotating the rotation hook 52.
- the pressing device is characterized in that the holding force for holding the rotating hook 52 in the state of being engaged with the fixing hook 51 is adjustable. According to this feature point, it is possible to finely adjust the preload applied to the object to be pressurized W from the output shaft 2 before the start of high thrust pressurization, in accordance with the target to be pressurized.
- the fixed hook 51 is a pivot hook by returning the input shaft 3 to the position before the high thrust pressurization from the state where the connection by the connection mechanism 5 is released. , And the connection between the output shaft 2 and the input shaft 3 by the connection mechanism 5 is automatically restored. Due to this feature point, it is not necessary to move the output shaft 2 to the uppermost end in order to restore the connection between the output shaft 2 and the input shaft 3 by the connection mechanism 5.
- the pressing device is a fixing hook fixed to the upper end of the input shaft 3 by returning the input shaft 3 (moving upward) from the state where the connection by the connection mechanism 5 is released.
- 51 is in contact with the rotation hook 52 of the output shaft 2, and the rotation hook 52 is rotated in the reverse direction, and has the feature that the connection between the output shaft 2 and the input shaft 3 is automatically restored. .
- This feature avoids the complexity of the device which eliminates the need to provide a drive source to restore the connection.
- the present invention is not limited to this. It is also possible to cause the connection mechanism 5 to release the connection by detecting that the other member is in contact with another member. For example, when the movable mold of the injection molding machine is attached to the output shaft 2 and the movable mold abuts against the fixed mold during mold clamping, or the pressing die of the pressing machine is attached to the output shaft 2 It is also possible to detect that the pressing die is in contact with the receiving material or the pressing material set in the receiving die.
- the force that the output shaft 2 is in contact with the object to be pressurized W is detected based on the reaction force that the output shaft 2 receives from the object to be pressurized W, etc.
- a detection method may be used.
- a load cell or acceleration sensor such as a load cell is provided on the output shaft 2, and the output shaft 2 moving at high speed is pressed against the object W to be pressurized based on the change in output signal. The contact may be detected.
- the connection by the connection mechanism 5 is released using the action of the reaction force that the output shaft 2 receives from the pressure object W.
- the output signal from the sensor described above external power may be used to release the connection.
- the actuator may be released by an electric drive or an air drive actuator.
- a force is adopted as a coupling mechanism 5 for coupling the output shaft 2 and the input shaft 3 by using a combination of a fixing hook 51 provided on the input shaft 3 and a rotation hook 52 provided on the output shaft 2.
- Other structures can be adopted as long as they can be connected so that the output shaft 2 and the input shaft 3 do not move relative to each other.
- the input shaft 3 is temporarily stopped immediately before the contact and then the movement is resumed.
- the movement speed may be lowered and brought into contact without completely stopping.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP05776842A EP1880835A1 (en) | 2005-05-09 | 2005-08-31 | Pressurizing device |
JP2007505314A JPWO2006120764A1 (ja) | 2005-05-09 | 2005-08-31 | 加圧装置 |
US11/913,969 US20090028732A1 (en) | 2005-05-09 | 2005-08-31 | Pressurizing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005136322 | 2005-05-09 | ||
JP2005-136322 | 2005-05-09 |
Publications (1)
Publication Number | Publication Date |
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WO2006120764A1 true WO2006120764A1 (ja) | 2006-11-16 |
Family
ID=37396285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/015890 WO2006120764A1 (ja) | 2005-05-09 | 2005-08-31 | 加圧装置 |
Country Status (4)
Country | Link |
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US (1) | US20090028732A1 (ja) |
EP (1) | EP1880835A1 (ja) |
JP (1) | JPWO2006120764A1 (ja) |
WO (1) | WO2006120764A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109707591A (zh) * | 2019-01-29 | 2019-05-03 | 封海涛 | 一种能量输出机构 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002055291A1 (fr) * | 2001-01-16 | 2002-07-18 | Falcom Co., Ltd. | Dispositif de pression |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2818337C2 (de) * | 1978-04-26 | 1980-07-17 | Haug, Paul, 7307 Aichwald | Druckübersetzter hydropneumatischer |
DE3625805A1 (de) * | 1986-07-30 | 1988-02-04 | Haenchen Kg Herbert | Hydraulischer druckuebersetzer |
DE59202094D1 (de) * | 1991-01-14 | 1995-06-08 | Engel Gmbh Maschbau | Vorrichtung zur durchführung einer zweistufigen linearen bewegung. |
-
2005
- 2005-08-31 EP EP05776842A patent/EP1880835A1/en not_active Withdrawn
- 2005-08-31 JP JP2007505314A patent/JPWO2006120764A1/ja active Pending
- 2005-08-31 WO PCT/JP2005/015890 patent/WO2006120764A1/ja not_active Application Discontinuation
- 2005-08-31 US US11/913,969 patent/US20090028732A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002055291A1 (fr) * | 2001-01-16 | 2002-07-18 | Falcom Co., Ltd. | Dispositif de pression |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109707591A (zh) * | 2019-01-29 | 2019-05-03 | 封海涛 | 一种能量输出机构 |
Also Published As
Publication number | Publication date |
---|---|
US20090028732A1 (en) | 2009-01-29 |
JPWO2006120764A1 (ja) | 2008-12-18 |
EP1880835A1 (en) | 2008-01-23 |
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