WO2014115628A1 - シリンダ装置 - Google Patents
シリンダ装置 Download PDFInfo
- Publication number
- WO2014115628A1 WO2014115628A1 PCT/JP2014/050633 JP2014050633W WO2014115628A1 WO 2014115628 A1 WO2014115628 A1 WO 2014115628A1 JP 2014050633 W JP2014050633 W JP 2014050633W WO 2014115628 A1 WO2014115628 A1 WO 2014115628A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder device
- detection valve
- piston
- detection
- output rod
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/06—Arrangements for positively actuating jaws
- B25B5/061—Arrangements for positively actuating jaws with fluid drive
- B25B5/062—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis parallel to the pressing direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/16—Details, e.g. jaws, jaw attachments
-
- 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
-
- 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
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches
Definitions
- the present invention relates to a cylinder device provided with a function of detecting a moving position of a movable member such as a piston, and more specifically to a cylinder device suitable for use in a workpiece clamp.
- Patent Document 1 Japanese Patent Laid-Open No. 60-129410
- a piston is inserted into the housing so as to be movable in the left-right direction, and detection valves for confirming the left and right movement positions of the piston are arranged on the left and right end walls of the housing, respectively.
- a structure is described in which the detection rod of the valve is operated by the piston.
- the detection valves are arranged on the left and right end walls of the housing. Therefore, when the left end wall is attached to a fixed base such as a table, the left detection valve can be accessed. It becomes difficult and it takes time to maintain the detection valve on the left side.
- the detection rod of the detection valve is arranged in series with the piston, the degree of freedom in arrangement of the detection valve is limited.
- An object of the present invention is to provide a cylinder device in which maintenance of a detection valve is easy.
- Another object of the present invention is to provide a cylinder device capable of improving the degree of freedom in arrangement of detection valves.
- a cylinder device is configured as follows.
- An annular piston 10 is inserted into the housing 1 so as to be movable up and down.
- the output rod 15 is inserted into the cylindrical hole 10 a of the piston 10 and the output rod 15 is inserted into the upper wall 2 of the housing 1.
- a pressurized fluid for driving is supplied to and discharged from a driving chamber 11 disposed on the upper side of the piston 10. Then, the output rod 15 is configured to pivot by moving the piston 10 up and down relative to the output rod 15.
- the first detection valve 31 for detecting the lowering and the second detection valve 32 for detecting the rising are arranged on the upper wall 2 at a predetermined interval in the circumferential direction.
- a first operated portion 49 and a second operated portion 79 are provided in the first detection valve 31 and the second detection valve 32 in the vicinity of the drive chamber 11, respectively.
- a first operated portion 49 is disposed on one of both the output rod 15 and the piston 10 so as to be interlocked, and a second operated portion 79 is disposed on the other of the both so as to be interlocked. Pressurized air for detection is supplied to the inlets 31a and 32a of the first detection valve 31 and the second detection valve 32 via the first supply path B1 and the second supply path B2.
- Said 1st invention has the following effect.
- two detection valves On the outer peripheral side of the output rod inserted into the upper wall of the housing, two detection valves, a first detection valve for lowering detection and a second detection valve for highering detection, are arranged on the upper wall.
- the two detection valves Even when the lower wall is attached to a fixed base such as a table or the lower half of the housing is inserted into the mounting hole of the fixed base, the two detection valves can be accessed from the upper side or the upper side. become. For this reason, the maintenance of the detection valve is not time-consuming.
- the surplus space on the upper wall can be used as an installation space, so that the cylinder device can be maintained in a compact state. Therefore, it is possible to provide a compact cylinder device that facilitates maintenance of the detection valve.
- the cylinder device is configured as follows.
- a piston 10 is inserted into the housing 1 so as to be able to move up and down, and a driving chamber 11 to which a pressurized fluid for driving is supplied and discharged is disposed above the piston 10.
- An output rod 15 is inserted into the upper wall 2 of the housing 1, and the pressurized fluid supplied to the drive chamber 11 is configured to drive the output rod 15 downward via the piston 10.
- a first detection valve 31 for detecting lowering and a second detection valve 32 for detecting rising are arranged at predetermined intervals in the circumferential direction on the upper wall 2 on the outer peripheral side of the output rod 15.
- a first operated portion 49 and a second operated portion 79 are provided in the first detection valve 31 and the second detection valve 32 in the vicinity of the drive chamber 11, respectively.
- the first operated portion 49 and the second operated portion 79 are arranged so as to be interlocked with either the piston 10 or the output rod 15. Pressurized air for detection is supplied to the inlets 31a and 32a of the first detection valve 31 and the second detection valve 32 via the first supply path B1 and the second supply path B2.
- Said 2nd invention has the following effect.
- two detection valves On the outer peripheral side of the output rod inserted into the upper wall of the housing, two detection valves, a first detection valve for lowering detection and a second detection valve for highering detection, are arranged on the upper wall.
- the two detection valves Even when the lower wall is attached to a fixed base such as a table or the lower half of the housing is inserted into the mounting hole of the fixed base, the two detection valves can be accessed from the upper side or the upper side. become. For this reason, the maintenance of the detection valve is not time-consuming.
- the surplus space on the upper wall can be used as an installation space, so that the cylinder device can be maintained in a compact state. Therefore, it is possible to provide a compact cylinder device that facilitates maintenance of the detection valve.
- the upper wall 2 is formed in a rectangular or square shape in plan view, and one of the four wall portions corresponding to the four sides in the circumferential direction of the upper wall 2
- a supply / exhaust passage 21 communicating with the drive chamber 11 is formed, and the first detection is performed on any one of the four wall portions excluding the wall portion forming the supply / exhaust passage 21. It is preferable to provide the valve 31 and the second detection valve 32. According to the above configuration, the cylinder device can be made more compact.
- the upper wall 2 has a mounting flange 7, and a supply / discharge port communicated with the supply / discharge path 21 on an installation surface 7 a formed on the lower surface of the outer peripheral portion of the flange 7. P1 is preferably opened. According to the above configuration, the supply and discharge system for the pressurized fluid for driving can be simply configured.
- the first supply communicated with the first supply path B1 and the second supply path B2 to the installation surface 7a at a position below the first detection valve 31 and the second detection valve 32. It is preferable to open the port A1 and the second supply port A2. According to the above configuration, it is possible to simply configure a pressurized air supply system for detection.
- the output rod 15 has a first operation portion 23a, and the first operation portion 23a is configured such that the first operated portion 49 is moved when the output rod 15 is moved from the lowered position to the upper limit position or a position in the vicinity thereof. Is pushed outward to open the first detection valve 31, and the first operated portion 49 moves inward when the output rod 15 is lowered from the upper limit position by a predetermined first stroke S1. And the first detection valve 31 is closed.
- the piston 10 has a second operation portion 10b. The second operation portion 10b disengages the second operated portion 79 when the piston 10 moves from the lowered position to the upper limit position or a position in the vicinity thereof.
- the second detection valve 32 is closed to allow the operated portion 79 to move inward when the piston 10 is lowered from the upper limit position by a predetermined second stroke S2.
- the second detection valve 32 is opened. According to the above configuration, the lowered position and the raised position can be reliably distinguished and detected.
- a first operating portion 23 a and a second operating portion 10 b are provided on either the output rod 15 or the piston 10.
- the first operation portion 23a is configured to allow the first detection valve 31 to be closed when either one of the output rod 15 and the piston 10 is lowered by a predetermined amount from the upper limit position or a position near the upper limit position. To do. Further, when either one of the output rod 15 and the piston 10 is raised by a predetermined amount from the lowered position, the second operation portion 10b controls the second detection valve 32 via the second operated portion 79. Configure to close.
- a first transmission member 40 is provided between the first operated portion 49 and the first operating portion 23a to convert the upward movement of the first operating portion 23a into a lateral movement.
- a second transmission member 70 is provided between the second operated portion 79 and the second operating portion 10b to convert the upward movement of the second operating portion 10b into a lateral movement.
- the said 1st transmission member 40 and the 2nd transmission member 70 which consist of a ball
- the cylinder device is configured as follows.
- An annular piston 10 inserted into the housing 1 so as to be movable up and down, an output rod 15 inserted into the cylindrical hole 10a of the piston 10 and inserted into the upper wall 2 of the housing 1, and an upper side of the piston 10
- a drive chamber 11 in which pressurized fluid for driving is supplied and discharged, and is configured such that the output rod 15 turns by moving the piston 10 up and down relative to the output rod 15.
- a detection valve 32 for detecting a rise arranged laterally on the upper portion of the housing 1, an operation portion 10 b provided on one of the piston 10 and the output rod 15, and the operation in the vicinity of the drive chamber 11.
- the operation part 79 provided in the detection valve 32 so as to be interlocked with the part 10b and the transmission chamber 67 communicating with the upper part of the drive chamber 11 are inserted into the operation part 10b and the operation part 10b is moved upward.
- 79 is provided with a transmission member 70 for converting the movement 79 into the lateral direction, and a supply path B2 for supplying pressurized air for detection to the inlet 32a of the detection valve 32.
- the cylinder device is configured as follows.
- a piston 10 that is inserted into the housing 1 so as to be movable up and down, a drive chamber 11 that is arranged above the piston 10 and that is supplied and discharged with a pressurized fluid for driving, and is inserted into the upper wall 2 of the housing 1.
- the output rod 15 is provided.
- the pressurized fluid supplied to the driving chamber 11 is configured to drive the output rod 15 downward through the piston 10.
- a detection valve 32 for detecting a rise arranged laterally on the upper portion of the housing 1, an operation portion 10 b provided on one of the piston 10 and the output rod 15, and the operation in the vicinity of the drive chamber 11.
- the operation part 79 provided in the detection valve 32 so as to be interlocked with the part 10b and the transmission chamber 67 communicating with the upper part of the drive chamber 11 are inserted into the operation part 10b and the operation part 10b is moved upward.
- 79 is provided with a transmission member 70 for converting the movement 79 into the lateral direction, and a supply path B2 for supplying pressurized air for detection to the inlet 32a of the detection valve 32.
- Said 4th invention has the same effect as said 3rd invention.
- a stopper portion 67a for preventing the transmission member 70 made of a ball from dropping from the transmission chamber 67 to the drive chamber 11.
- each on-off valve such as the first detection valve and the second detection valve (detection valve) is constituted by either a poppet valve or a spool valve.
- FIG. 1A shows a workpiece clamp using the cylinder device of the present invention, and is an elevation view of the clamp in an unclamped state, corresponding to a cross-sectional view taken along line 1A-1A in FIG. 2A.
- FIG. 1B corresponds to a cross-sectional view taken along line 1B-1B in FIG. 2A and is similar to FIG. 1A.
- FIG. 1C is a cross-sectional view taken along line 1C-1C in FIG. 1B.
- FIG. 2A is a plan view of FIG. 1A.
- FIG. 2B is a diagram corresponding to the right side surface of FIG. 2A.
- FIG. 2C corresponds to a cross-sectional view taken along line 2C-2C in FIG.
- FIG. 1A and also corresponds to a cross-sectional view taken along line 2C-2C in FIG. 1B.
- FIG. 3A is a view similar to FIG. 1A, showing a clamped state of the clamp.
- FIG. 3B is also a view similar to FIG. 1B, showing the clamp state of the clamp.
- FIG. 3C is a cross-sectional view taken along line 3C-3C in FIG. 3B.
- FIG. 4A is a partially enlarged view of FIG. 1A, and shows a first detection valve for detecting descent in the unclamped state.
- FIG. 4B is a partially enlarged view of FIG. 3A showing the first detection valve in the clamped state.
- FIG. 5A is a partially enlarged view of FIG. 1B and shows a second detection valve for detecting an increase in the unclamped state.
- FIG. 5B is a partially enlarged view of FIG. 3B showing the second detection valve in the clamped state.
- SYMBOLS 1 Housing, 2: Upper wall, 7: Flange, 7a: Installation surface, 10: Piston, 10a: Tube hole, 10b: 2nd operation part (operation part), 11: Drive room (1st drive room), 15 : Output rod, rod 21: supply / discharge path (first supply / discharge path), 23: flange, 23a: first operation part, 31: first detection valve, 31a: inlet, 32: second detection valve (detection valve), 32a: inlet, 37: first transmission chamber, 37a: stopper portion, 40: first transmission member, 49: first operated portion, 67: second transmission chamber (transmission chamber), 67a: stopper portion, 70: first 2 transmission member (transmission member), 79: second operated part (operated part), B1: first supply path, B2: second supply path (supply path), P1: supply / discharge port (first supply / discharge port) ), S1: first stroke, S2: second stroke.
- FIGS. 1A to 5B a case where the cylinder device is applied to a horizontal swing clamp for fixing a workpiece is illustrated.
- the overall structure of the clamp will be described mainly based on FIGS. 1A to 2C.
- the housing 1 is attached to the table T as a fixed base.
- the housing 1 includes an upper wall 2 as one end wall, a lower wall 3 as the other end wall, a body wall 4 extending in the vertical direction, and a cylinder hole 5 formed inside the body wall 4 and the upper wall 2.
- the upper wall 2 has a flange 7 for attachment on the outer periphery thereof, and is formed in a rectangular shape in plan view.
- Bolt holes 8 are vertically penetrated at the four corners of the flange 7.
- a mounting surface 7 a formed on the lower surface of the flange 7 is fixed to the upper surface of the table T by fastening bolts (not shown) inserted into the respective bolt holes 8.
- An annular piston 10 is inserted into the cylinder hole 5 so as to be able to move up and down.
- a first driving chamber 11 for clamping and a second driving chamber 12 for unclamping are disposed above and below the piston 10.
- a first supply / exhaust passage 21 communicating with the first drive chamber 11 is formed in the left wall portion in plan view among the four wall portions corresponding to the four sides in the circumferential direction of the upper wall 2.
- a second supply / discharge path 22 communicating with the second drive chamber 12 is formed.
- a first supply / exhaust port P ⁇ b> 1 communicating with the first supply / exhaust path 21 is opened on the installation surface 7 a and communicated with the second supply / exhaust path 22.
- the second supply / discharge port P2 is opened. With respect to the first driving chamber 11 and the second driving chamber 12, the first supply / discharge port P1 and the second supply / discharge port P2, the first supply / discharge passage 21 and the second supply / discharge passage 22 are provided. Thus, pressurized oil (a pressurized fluid for driving) is supplied and discharged.
- An output rod 15 is inserted into a through hole 14 provided in the central portion of the upper wall 2 and a cylindrical hole 10 a of the piston 10.
- a clamp arm 16 is fixed to the upper portion of the output rod 15 with a nut 17.
- a sealing member 18 and a scraper 19 are mounted on the upper wall 2 on the outer peripheral side of the output rod 15. Further, a flange 23 provided at an intermediate height portion of the output rod 15 can be rotatably received on the lower surface of the upper wall 2.
- the cylinder hole 5 includes a small-diameter hole 5a in the upper half and a large-diameter hole 5b in the lower half.
- the piston 10 can move in the axial direction (here, the vertical direction) via the outer sealing member 24 and the inner sealing member 25. It can rotate around its axis and is inserted in a tight manner.
- Three guide grooves 26 are formed on the outer peripheral portion of the piston 10 at substantially equal intervals in the circumferential direction. Further, an engagement ball (engagement tool) 27 fitted in each guide groove 26 is supported by a recessed hole 28 formed in the lower part of the inner peripheral wall of the small diameter hole 5a.
- the guide groove 26 is formed by connecting a spiral turning groove 26b and a rectilinear groove 26a upward (see FIG. 3A).
- a transmission mechanism 29 is provided between the output rod 15 and the piston 10.
- the transmission mechanism 29 is disposed so as to prevent the output rod 15 and the piston 10 from rotating relative to each other around the shaft center and to allow relative movement in the shaft center direction. It is configured as follows. As shown in FIGS. 3A and 3B, three transmission grooves 29a extending in the vertical direction are formed on the outer peripheral portion of the lower portion of the output rod 15 at substantially equal intervals in the circumferential direction. A transmission ball 29b fitted in each transmission groove 29a is provided on the piston 10. Further, a driven portion 15 a facing the lower portion of the piston 10 is provided at the lower portion of the output rod 15.
- the diameter of the portion sealed to the upper wall 2 by the sealing member 18 is larger than the diameter of the portion sealed to the piston 10 by the inner sealing member 25.
- the pressure receiving cross-sectional area of the upper portion of the output rod 15 becomes larger than the pressure receiving cross-sectional area of the lower portion, and the output rod is driven by the vertical force acting from the pressure oil in the first drive chamber 11.
- 15 is pushed up to the unclamp raised position shown in FIGS. 1A and 1B. That is, in this embodiment, a mechanism is configured to hold the output rod 15 in the unclamped raised position by the upward differential force acting on the output rod 15. Further, the annular pressure receiving sectional area of the piston 10 is set so that the downward force acting on the piston 10 is larger than the upward differential force acting on the output rod 15.
- a malfunction prevention mechanism E is provided that prevents the output rod 15 from descending while the output rod 15 is turning at the unclamped ascending position, and allows the output rod 15 to descend when the linear movement descends, which will be described later.
- This malfunction prevention mechanism E is configured as follows.
- the lower wall 3 of the housing 1 is provided with a circular accommodation hole 3a and a fitting hole 3b formed in an oval shape in a plan view in the vertical direction.
- the lower end portion of the output rod 15 is provided with a fitting portion 15b formed in an oval shape in plan view, corresponding to the fitting hole 3b.
- the long axis of the fitting portion 15b is orthogonal to the long axis of the fitting hole 3b (see FIG. 1C).
- a slight gap G is formed between the lower surface of the fitting portion 15b and the upper surface of the peripheral wall of the fitting hole 3b.
- a first detection valve 31 for detecting lowering and a second detection valve 32 for detecting rising are disposed on the outer peripheral side of the output rod 15 in the right wall portion of the four wall portions in plan view. Are provided at predetermined intervals in the circumferential direction.
- the axial centers of the first detection valve 31 and the second detection valve 32 are arranged almost horizontally in this embodiment, but may be inclined so as to approach the axial center of the piston 10 as it goes downward. .
- a first supply port A1 and a second supply port A2 are opened on the installation surface 7a so as to supply pressurized air for detection.
- the first supply port A1 and the second supply port A2 communicate with the inlets 31a and 32a of the first detection valve 31 and the second detection valve 32 through the first supply path B1 and the second supply path B2, respectively. Is done.
- FIG. 4A is a partially enlarged view of FIG. 1A.
- FIG. 4B is a partially enlarged view of FIG. 3A.
- the first detection valve 31 for detecting the lowering is opened by the first operating portion 23a provided on the flange 23 while the output rod 15 moves from the lowering position of FIG. 4B to the upper limit position of FIG. 4A (FIG. 4A shows a state in which the first detection valve 31 has already been fully opened).
- the first detection valve 31 is closed when the output rod 15 is lowered by a predetermined first stroke S1 from the upper limit position of FIG. 4A. More specifically, as shown in FIGS. 4A and 4B, the first detection valve 31 is configured as follows.
- a stepped first mounting hole M1 is penetrated through the upper wall 2 substantially horizontally.
- the first mounting hole M1 includes a female screw hole 34, a large-diameter hole 35, a medium-diameter hole 36, and a small-diameter first transmission chamber 37 that are communicated in order from the radially outer side to the inner side.
- the first casing C1 attached to the first attachment hole M1 includes a valve cylinder 38 attached to the left portion of the large-diameter hole 35 and a push cylinder 39 screwed into the female screw hole 34.
- the push cylinder 39 presses the valve cylinder 38 against the bottom of the large diameter hole 35.
- a first transmission member 40 made of a ball is inserted into the first transmission chamber 37 so as to be movable in the horizontal direction.
- the first detection rod 41 is inserted into the first casing C1.
- the first detection rod 41 includes a small-diameter inner pressure receiving portion 45 inserted into the medium-diameter hole 36 via the inner sealing member 44 in a close-packed manner, and the cylindrical hole of the push cylinder 39 via the outer sealing member 46.
- a large-diameter outer pressure receiving portion 47 inserted in a tightly sealed manner, and a connecting rod 48 provided between the inner pressure receiving portion 45 and the outer pressure receiving portion 47 are provided.
- the pressure receiving area of the outer pressure receiving portion 47 is set to a value larger than the pressure receiving area of the inner pressure receiving portion 45.
- a first operated portion 49 is provided at the left end portion of the inner pressure receiving portion 45.
- a pressure chamber 51 is formed on the right side of the outer pressure receiving portion 47.
- the pressure chamber 51 communicates with the first drive chamber 11 via a through hole 52 formed along the axis of the first detection rod 41 and the first transmission chamber 37.
- the first transmission member 40 inserted into the first transmission chamber 37 is prevented from dropping into the first drive chamber 11 by a stopper portion 37 a provided on the inner peripheral wall of the first transmission chamber 37.
- An annular valve seat 54 is formed around the right part of the cylinder hole of the valve cylinder 38, and a poppet-shaped valve surface 55 is formed on the left part of the outer pressure receiving part 47. As shown in FIG. 4B, the valve surface 55 is configured to come into contact with the valve seat 54 when the first detection rod 41 moves to the left.
- An annular inlet passage 56 is formed between the tube hole of the valve cylinder 38 and the outer peripheral surface of the connecting rod 48. Further, a vertical hole 57 is passed through the peripheral wall of the valve cylinder 38, and an upper end portion of the vertical hole 57 constitutes an inlet 31 a of the first detection valve 31. The inlet 31a communicates with the first supply port A1 through the first supply path B1.
- a plurality of radiating grooves 59 are formed on the left end surface of the push tube 39 at predetermined intervals in the circumferential direction.
- An annular channel 60 is formed between the left part of the outer peripheral surface of the push cylinder 39 and the inner peripheral surface of the large-diameter hole 35, and the first detection valve 31 is formed by a middle part of the annular channel 60.
- the outlet 31b is configured. As shown mainly in FIG. 2C, the outlet 31 b communicates with the outside air via a check valve 62 provided in the discharge passage 61.
- the check valve 62 includes a valve seat 62a and a spring 62c that biases the ball 62b against the valve seat 62a.
- the second detection valve 32 for detecting the rise is closed by the piston 10 when the piston 10 moves from the lowered position to the upper limit position in FIG. 5A or a position in the vicinity thereof (FIG. 5A shows the second detection valve). 32 indicates a state of being fully closed). Further, the second detection valve 32 is opened when the piston 10 is lowered from the upper limit position of FIG. 5A by a predetermined second stroke S2 (see the one-dot chain diagram and the two-dot chain diagram in FIG. 5B). . As shown in FIGS. 5A and 5B, the second detection valve 32 is configured as follows in substantially the same manner as the first detection valve 31.
- a stepped second mounting hole M2 is penetrated substantially horizontally through the upper wall 2.
- the second mounting hole M2 includes a female screw hole 64, a large-diameter hole 65, a medium-diameter hole 66, and a small-diameter second transmission chamber 67 that are communicated in order from the outside in the radial direction to the inside.
- the second casing C ⁇ b> 2 attached to the second mounting hole M ⁇ b> 2 includes a valve cylinder 68 mounted on the left portion of the large diameter hole 65 and a push cylinder 69 screwed into the female screw hole 64.
- the push cylinder 69 presses the valve cylinder 68 against the bottom of the large diameter hole 65.
- a second transmission member 70 made of a ball is inserted into the second transmission chamber 67 so as to be movable in the horizontal direction.
- the second detection rod 42 is inserted into the second casing C2.
- the second detection rod 42 includes a small-diameter inner pressure receiving portion 75 inserted into the medium-diameter hole 66 via the inner sealing member 74 in a close-packed manner, and an outer sealing member 76 in the cylindrical hole of the push cylinder 69.
- a large-diameter outer pressure receiving portion 77 inserted in a confined manner, and a connecting rod 78 provided between the inner pressure receiving portion 75 and the outer pressure receiving portion 77 are provided.
- the pressure receiving area of the outer pressure receiving portion 77 is set to a value larger than the pressure receiving area of the inner pressure receiving portion 75.
- a second operated portion 79 is provided at the left end portion of the inner pressure receiving portion 75.
- a pressure chamber 81 is formed on the right side of the outer pressure receiving portion 77.
- the pressure chamber 81 is communicated with the first drive chamber 11 through a through hole 82 formed along the axis of the second detection rod 42 and the second transmission chamber 67.
- the second transmission member 70 inserted into the second transmission chamber 67 is prevented from dropping into the first drive chamber 11 by a stopper portion 67 a provided on the inner peripheral wall of the second transmission chamber 67.
- a valve hole 84 penetrates the peripheral wall of the valve barrel 68 in the vertical direction, and a spool-shaped valve surface 85 and an annular outlet groove 86 are formed on the outer peripheral surface of the connecting rod 78 on the left and right. As shown in FIG. 5A, the valve surface 85 is configured to close the valve hole 84 when the second detection rod 42 moves to the right.
- An inlet 32 a of the second detection valve 32 is configured by the upper end portion of the valve hole 84. The inlet 32a communicates with the second supply port A2 through the second supply path B2.
- a plurality of radial grooves 87 are formed on the right end surface of the valve barrel 68 at predetermined intervals in the circumferential direction.
- a plurality of radiating grooves 89 are formed on the left end surface of the push tube 69 at predetermined intervals in the circumferential direction.
- An annular flow path 90 is formed between the left portion of the outer peripheral surface of the push cylinder 69 and the inner peripheral surface of the large-diameter hole 65, and the outlet 32 b of the second detection valve 32 is formed in the middle portion of the annular flow path 90. Is configured.
- the outlet 32b communicates with the outside air via the discharge passage 61 and the check valve 62 (see FIG. 2C).
- the clamp device having the above-described configuration operates as follows.
- the pressure oil in the upper first drive chamber 11 is discharged and the pressure oil is supplied to the lower second drive chamber 12.
- piston 10 raises, the shoulder part 10c of the piston 10 is received by the step part 5c of the cylinder hole 5, and the said piston 10 is raised to the upper limit position.
- the output rod 15 is held at the unclamped upward position in FIG. 1A by an upward force acting on the pressure receiving area corresponding to the sealing cross-sectional area of the inner sealing member 25.
- the first detection valve 31 for detecting the lowering shown in FIG. 1A is opened. More specifically, as shown in FIG. 4A, the first operation portion 23a provided on the flange 23 of the output rod 15 moves the first detection rod 41 to the right via the first transmission member 40 and the first operated portion 49. The valve surface 55 of the outer pressure receiving portion 47 is separated from the valve seat 54. For this reason, the pressurized air supplied to the first supply port A1 flows to the discharge passage 61 through the first supply passage B1, the inlet 31a, the annular inlet passage 56, the radiation groove 59, and the outlet 31b. The pressurized air in the passage 61 pushes the ball 62b of the check valve 62 open and is discharged to the outside air (see FIG. 2C).
- the second detection valve 32 for detecting the rise shown in FIG. 1B is closed. More specifically, as shown in FIG. 5A, the second operating portion 10b of the piston 10 pushes the second detection rod 42 to the right via the second transmission member 70 and the second operated portion 79, and the connecting rod 78. The valve face 85 closes the valve hole 84. For this reason, the pressure of 2nd supply port A2 rises to a setting value, and it can confirm that a clamp is an unclamp state by detecting the pressure rise with a sensor.
- the piston 10 descends while turning in the clockwise direction in plan view along the turning groove 26b of the guide groove 26.
- the output rod 15 (and the clamp arm 16) held at the unclamped raised position is horizontally swiveled in the clockwise direction in plan view via the transmission ball 29b and the transmission groove 29a.
- the output rod 15 (and the clamp arm 16) turns about 90 degrees, and the lower portion of the piston 10 contacts the driven portion 15a.
- the phase of the fitting portion 15b provided at the lower end of the output rod 15 matches the phase of the fitting hole 3b (see FIG. 3C), and the fitting portion is inserted into the fitting hole 3b. 15b faces each other.
- the piston 10 descends straight along the rectilinear groove 26a of the guide groove 26 by the pressure of the first drive chamber 11, so that the piston 10 is driven as shown in FIG. 3A (and FIG. 3B).
- the output rod 15 is lowered straight through the portion 15a.
- the clamp arm 16 presses the workpiece against the upper surface of the fixed base (both not shown).
- the first detection valve 31 for detecting the downward movement and the second detection valve 32 for detecting the upward movement operate as follows.
- the pressurized air supplied to the second supply port A2 passes through the second supply path B2, the valve hole 84, the outlet groove 86, the two radial grooves 87 and 89, and the annular flow path 90, and the discharge path. It flows to 61.
- the pressurized air in the discharge path 61 pushes and opens the ball 62b of the check valve 62 and is discharged to the outside air (see FIG. 2C).
- the pressure oil supplied from the first drive chamber 11 to the pressure chamber 51 moves the first detection rod 41 to the left from the position of FIG. 4A.
- the valve surface 55 of the outer pressure receiving portion 47 contacts the valve seat 54, and the first The detection valve 31 is fully closed. For this reason, it can be confirmed that the pressure of the pressurized air in the first supply port A1 rises to a set value, and the clamp moves to the clamped state by detecting the pressure rise with the sensor.
- the clamping device When switching from the clamped state of FIG. 3A to FIG. 3C to the unclamped state of FIG. 1A to FIG. 1C, in the clamped state, the pressure oil in the upper first drive chamber 11 is discharged and to the lower second drive chamber 12. What is necessary is just to supply pressure oil. As a result, the clamping device operates in a procedure reverse to the above procedure. That is, first, the piston 10 and the output rod 15 rise straight due to the oil pressure in the second drive chamber 12, and the flange 23 of the output rod 15 is received by the upper wall 2. Next, as shown in FIG. 1A, the piston 10 that rises while rotating turns the output rod 15 counterclockwise in plan view.
- the first detection valve 31 for detecting the lowering and the second detection valve 32 for detecting the raising operate as follows.
- the second operating portion 10b of the piston 10 contacts the second transmission member 70 as shown in the two-dot chain diagram of FIG. 5B. Subsequently, as shown in FIG. 5A, the second operating portion 10b moves the second detection rod 42 to the right via the second transmission member 70 and the second operated portion 79 of the second detection valve 32, The valve surface 85 of the second detection rod 42 faces the valve hole 84. For this reason, the second detection valve 32 is fully closed, and the pressure of the pressurized air at the second supply port A2 rises to the set value. By detecting the increase in pressure with a sensor, it can be confirmed that the clamp is in an unclamped state.
- the above embodiment has the following advantages.
- two detection valves On the outer peripheral side of the output rod 15 inserted in the upper wall 2 of the housing 1, two detection valves, a first detection valve 31 for detecting lowering and a second detection valve 32 for detecting rising, are provided on the upper wall 2.
- the two detection valves 31 and 32 are provided. It is possible to access from the upper side or the upper side. For this reason, the maintenance of the detection valves 31 and 32 is not troublesome.
- a first supply path B1 and a second supply path B2 for supplying pressurized air for detection to the two detection valves 31 and 32 are provided in the upper wall 2, and the first supply port A1 and the second supply port are provided. Since A2 is opened in the installation surface 7a of the flange 7 of the upper wall 2, the pressurized air supply system can be configured simply. Further, when the two detection valves 31 and 32 are installed in the upper wall 2, the surplus space of the upper wall 2 can be used as an installation space, so that the cylinder device as a main component of the clamp can be made compact. I can make it.
- the above embodiment can be modified as follows.
- the first detection valve 31 for detecting the lowering is opened by the output rod 15 while the output rod 15 moves from the lowering position to the upper limit position, and the output rod 15 is moved from the upper limit position to a predetermined level. What is necessary is just to comprise so that a valve may be closed when 1st stroke S1 descend
- the second detection valve 32 for detecting the rise is closed by the piston 10 when the piston 10 moves from the lowered position to the upper limit position or a position near the upper limit position, and the piston 10 is moved to the upper limit position.
- the valve may be configured to be opened when the predetermined second stroke S2 is lowered. Therefore, instead of being fully closed at the upper limit position, the second detection valve 32 may be configured to be fully closed when it rises in the vicinity of the upper limit position.
- the first detection valve 31 and the second detection valve 32 may be arranged in an oblique posture instead of being arranged in a horizontal posture.
- the two detection valves 31 and 32 are disposed on the right wall portion in plan view of the four wall portions corresponding to the four sides of the upper wall 2 of the housing 1. Then, they may be arranged on the upper wall portion or the lower wall portion in plan view.
- the upper wall 2 may be formed in a square shape instead of being formed in a rectangular shape in plan view.
- a poppet type or a spool type can be arbitrarily selected.
- the first operating portion 23 a that operates the first detection valve 31 may be provided in the piston 10 instead of being provided in the output rod 15. Further, the second operating portion 10 b for operating the second detection valve 32 may be provided on the output rod 15 instead of being provided on the piston 10.
- the turning mechanism of the output rod 15 is provided between the housing 1 and the piston 10
- the turning mechanism can be provided between the piston 10 and the output rod 15.
- the piston 10 is configured to be movable in the axial direction with respect to the housing 1 and to be prevented from rotating around the axial center.
- the cylinder device of the present invention is not limited to the structure in which the output rod 15 rotates horizontally at the raised position, and may be used for a structure in which the output rod 15 moves up and down while rotating. Can be used for a structure that moves up and down without turning. In these other structures, it is conceivable to open and close the detection valves 31 and 32 as follows.
- the first operating portion 23a and the second operating portion 10b are provided on either the output rod 15 or the piston 10. When either one of the output rod 15 and the piston 10 is lowered by a predetermined amount from the upper limit position or a position near the upper limit position, the first operating portion 23a allows the first detection valve 31 for detecting the lowering to close.
- the first operation portion 23a is configured to open the first detection valve 31 via the first operated portion 49 when the one side is raised by a predetermined amount from the lowered position.
- the second operation unit 10b activates the second detection valve 32 for detecting rise via the second operated unit 79.
- the second operation unit 10b is configured to allow the second detection valve 32 to open when the one is lowered by a predetermined amount from the upper limit position or a position near the upper limit position. Either one of the two detection valves 31 and 32 may be omitted.
- the cylinder device of the present invention may be configured as a single-acting spring return type instead of the illustrated double-acting type.
- the pressurized fluid for driving used in the cylinder device may be a gas body such as compressed air instead of the illustrated pressurized oil.
- the cylinder device of the present invention can be used in a technical field different from the technical field of clamping. In addition, it is needless to say that various modifications can be made within a range that can be assumed by those skilled in the art.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Mechanically-Actuated Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
Description
その従来公報の第5図には、ハウジングにピストンを左右方向へ移動可能に挿入し、そのピストンの左右の移動位置を確認する検出弁を上記ハウジングの左右の端壁にそれぞれ配置し、各検出弁の検出ロッドを上記ピストンによって操作する構造が記載されている。
また、上記の従来技術では、ピストンに対して検出弁の検出ロッドが直列状に配置されるので、その検出弁の配置上の自由度が制限されていた。
本発明の目的は、検出弁のメンテナンスが容易なシリンダ装置を提供することにある。
また、本発明の別の目的は、検出弁の配置上の自由度を向上できるシリンダ装置を提供することにある。
ハウジング1内に環状のピストン10を昇降可能に挿入する。そのピストン10の筒孔10aに出力ロッド15を挿入すると共に当該出力ロッド15を前記ハウジング1の上壁2に挿入する。前記ピストン10の上側に配置された駆動室11に駆動用の加圧流体が供給および排出される。そして、前記ピストン10を前記出力ロッド15に対して昇降させることによって当該出力ロッド15が旋回するように構成される。また、前記出力ロッド15の外周側で前記の上壁2に、下降検出用の第1検出弁31及び上昇検出用の第2検出弁32を周方向へ所定の間隔をあけて配置する。前記駆動室11の近傍で前記第1検出弁31及び前記第2検出弁32に、それぞれ第1被操作部49及び第2被操作部79を設ける。前記出力ロッド15と前記ピストン10の両者のうちの一方に第1被操作部49を連動可能に配置すると共に、前記両者のうちの他方に第2被操作部79を連動可能に配置する。前記第1検出弁31及び前記第2検出弁32の各入口31a,32aに第1供給路B1及び第2供給路B2を介して検出用の加圧エアを供給する。
ハウジングの上壁に挿入された出力ロッドの外周側で、当該上壁に、下降検出用の第1検出弁と上昇検出用の第2検出弁との2つの検出弁を配置したので、そのハウジングの下壁をテーブル等の固定台に取付けたり、当該ハウジングの下半部を固定台の取付け穴に挿入した場合などでも、上記2つの検出弁に上横側や上側からアクセスすることが可能となる。このため、検出弁のメンテナンスに手間がかからない。
しかも、上記2つの検出弁は、上壁内に設置される際に、その上壁の余剰空間を設置スペースとして利用可能なので、シリンダ装置をコンパクトな状態に維持できる。
従って、検出弁のメンテナンスが容易でコンパクトなシリンダ装置を提供できる。
ハウジング1内にピストン10を昇降可能に挿入し、そのピストン10の上側に、駆動用の加圧流体が供給および排出される駆動室11を配置する。前記ハウジング1の上壁2に出力ロッド15を挿入し、前記駆動室11へ供給された加圧流体が前記ピストン10を介して前記出力ロッド15を下降駆動するように構成する。前記出力ロッド15の外周側で前記の上壁2に、下降検出用の第1検出弁31及び上昇検出用の第2検出弁32を周方向へ所定の間隔をあけて配置する。前記駆動室11の近傍で前記第1検出弁31及び前記第2検出弁32に、第1被操作部49及び第2被操作部79をそれぞれ設ける。これら第1被操作部49及び第2被操作部79を、前記ピストン10と前記出力ロッド15とのうちのいずれか一方に連動可能に配置する。前記第1検出弁31及び前記第2検出弁32の各入口31a,32aに第1供給路B1及び第2供給路B2を介して検出用の加圧エアを供給する。
ハウジングの上壁に挿入された出力ロッドの外周側で、当該上壁に、下降検出用の第1検出弁と上昇検出用の第2検出弁との2つの検出弁を配置したので、そのハウジングの下壁をテーブル等の固定台に取付けたり、当該ハウジングの下半部を固定台の取付け穴に挿入した場合などでも、上記2つの検出弁に上横側や上側からアクセスすることが可能となる。このため、検出弁のメンテナンスに手間がかからない。
しかも、上記2つの検出弁は、上壁内に設置される際に、その上壁の余剰空間を設置スペースとして利用可能なので、シリンダ装置をコンパクトな状態に維持できる。
従って、検出弁のメンテナンスが容易でコンパクトなシリンダ装置を提供できる。
上記構成によれば、シリンダ装置をさらにコンパクトに造れる。
上記構成によれば、駆動用の加圧流体の給排システムを簡素に構成できる。
上記構成によれば、検出用の加圧エアの供給システムを簡素に構成できる。
即ち、前記出力ロッド15は第1操作部23aを有し、その第1操作部23aは、前記出力ロッド15が下降位置から上限位置またはその近傍位置へ移動したときに前記第1被操作部49を外方へ押して当該第1検出弁31を開弁させると共に、前記出力ロッド15が前記の上限位置から所定の第1ストロークS1下降したときに前記第1被操作部49が内方へ移動するのを許容して前記第1検出弁31を閉弁させる。また、前記ピストン10は第2操作部10bを有し、その第2操作部10bは、前記ピストン10が下降位置から上限位置またはその近傍位置へ移動したときに前記第2被操作部79を外方へ押して当該第2検出弁32を閉弁させると共に、前記ピストン10が前記の上限位置から所定の第2ストロークS2下降したときに前記被操作部79が内方へ移動するのを許容して当該第2検出弁32を開弁させる。
上記構成によれば、下降位置と上昇位置とを確実に区分けして検出できる。
前記出力ロッド15とピストン10とのいずれか一方に、第1操作部23a及び第2操作部10bを設ける。当該出力ロッド15とピストン10とのいずれか一方が上限位置またはその近傍位置から所定量だけ下降したときに、前記第1操作部23aは前記第1検出弁31が閉じるのを許容するように構成する。また、当該出力ロッド15とピストン10とのいずれか一方が下降位置から所定量だけ上昇したときに、前記第2操作部10bが前記第2被操作部79を介して前記第2検出弁32を閉じるように構成する。
前記の第1被操作部49と前記の第1操作部23aとの間に、その第1操作部23aの上昇移動を横方向への移動に変換する第1伝動部材40を設ける。また、前記の第2被操作部79と前記の第2操作部10bとの間に、その第2操作部10bの上昇移動を横方向への移動に変換する第2伝動部材70を設ける。
上記構成によれば、各操作部が各伝動部材と各被操作部とを介して各検出弁を確実に操作できる。
上記構成によれば、伝動部材を伝動室に保持する構造を簡素にできる。
ハウジング1内に昇降可能に挿入された環状のピストン10と、そのピストン10の筒孔10aに挿入されると共に前記ハウジング1の上壁2に挿入された出力ロッド15と、前記ピストン10の上側に配置されると共に駆動用の加圧流体が供給および排出される駆動室11とを備え、前記ピストン10を前記出力ロッド15に対して昇降させることによって当該出力ロッド15が旋回するように構成する。また、前記ハウジング1の上部に横向きに配置された上昇検出用の検出弁32と、前記ピストン10と前記出力ロッド15との一方に設けた操作部10bと、前記駆動室11の近傍で前記操作部10bに連動可能なように前記検出弁32に設けた被操作部79と、前記駆動室11の上部へ連通する伝動室67に挿入されると共に前記操作部10bの上昇移動を前記被操作部79の横方向への移動に変換する伝動部材70と、前記検出弁32の入口32aに検出用の加圧エアを供給する供給路B2と、を備える。
上記の第3発明によれば、操作部の上昇移動が伝動部材を介して被操作部の横方向への移動に変換されるので、検出弁を横向きに配置することが可能となり、その検出弁の配置上の自由度が向上する。
ハウジング1内に昇降可能に挿入されたピストン10と、そのピストン10の上側に配置されると共に駆動用の加圧流体が供給および排出される駆動室11と、前記ハウジング1の上壁2に挿入された出力ロッド15とを備える。前記駆動室11へ供給された加圧流体が前記ピストン10を介して前記出力ロッド15を下降駆動するように構成する。また、前記ハウジング1の上部に横向きに配置された上昇検出用の検出弁32と、前記ピストン10と前記出力ロッド15との一方に設けた操作部10bと、前記駆動室11の近傍で前記操作部10bに連動可能なように前記検出弁32に設けた被操作部79と、前記駆動室11の上部へ連通する伝動室67に挿入されると共に前記操作部10bの上昇移動を前記被操作部79の横方向への移動に変換する伝動部材70と、前記検出弁32の入口32aに検出用の加圧エアを供給する供給路B2と、を備える。
上記の第4発明は、前記の第3発明と同様の作用効果を奏する。
この実施形態では、シリンダ装置をワーク固定用の水平スイングクランプに適用した場合を例示してある。まず、主として図1Aから図2Cに基づいて上記クランプの全体構造を説明する。
また、上壁2の周方向の4辺に対応する4つの壁部分のうちの平面視で左側の壁部分には、第1駆動室11へ連通される第1給排路21が形成されると共に、第2駆動室12へ連通される第2給排路22が形成される。
さらに、上壁2の上記の左側の壁部分において、前記据付面7aに、第1給排路21へ連通される第1給排ポートP1が開口されると共に、第2給排路22へ連通される第2給排ポートP2が開口される。上記の第1駆動室11及び第2駆動室12に対して、それぞれ、第1給排ポートP1及び第2給排ポートP2と、第1給排路21及び第2給排路22とを介して、圧油(駆動用の加圧流体)が供給および排出される。
前記シリンダ孔5は、上半部の小径孔5aと下半部の大径孔5bとを備える。そのシリンダ孔5と上記出力ロッド15との間の環状空間に、前記ピストン10が、外封止部材24及び内封止部材25を介して、軸心方向(ここでは上下方向)へ移動可能かつ軸心回りに回転可能で保密状に挿入される。
図3A及び図3Bに示すように、上記出力ロッド15の下寄り部の外周部に、上下方向へ延びる3つの伝動溝29aが周方向へほぼ等間隔に形成される。各伝動溝29aに嵌合される伝動ボール29bが前記ピストン10に設けられる。また、出力ロッド15の下寄り部には、ピストン10の下部に対面する被駆動部15aが設けられる。
また、ピストン10の環状の受圧断面積は、それに作用する下向き力が、出力ロッド15に作用する上記の上向きの差力よりも大きくなるように設定されている。
また、上記の右側の壁部分において、前記据付面7aには、検出用の加圧エアを供給するように、第1供給ポートA1と第2供給ポートA2とが開口される。第1供給ポートA1及び第2供給ポートA2は、それぞれ、第1供給路B1及び第2供給路B2を介して、前記第1検出弁31及び第2検出弁32の各入口31a,32aに連通される。
まず、下降検出用の第1検出弁31について、主として図4A及び図4Bに基づいて説明する。図4Aは、前記図1Aの部分拡大図である。図4Bは、前記図3Aの部分拡大図である。
第1伝動室37には、ボールからなる第1伝動部材40が水平方向へ移動自在に挿入される。
内受圧部45の左端部には第1被操作部49が設けられる。外受圧部47の右側に圧力室51が形成される。その圧力室51は、第1検出ロッド41の軸心に沿って形成した貫通孔52と第1伝動室37とを介して、第1駆動室11へ連通される。第1伝動室37に挿入した前記第1伝動部材40が第1駆動室11へ脱落することは、第1伝動室37の内周壁に設けたストッパー部37aによって防止されている。
上記第2検出弁32は、図5A及び図5Bに示すように、前記の第1検出弁31とほぼ同様に次のように構成されている。
第2装着孔M2に取付けられる第2ケーシングC2は、大径孔65の左部に装着された弁筒68と、メネジ孔64に螺合された押筒69とを備える。その押筒69が弁筒68を大径孔65の底部に押し付けている。
第2伝動室67には、ボールからなる第2伝動部材70が水平方向へ移動自在に挿入される。
内受圧部75の左端部には第2被操作部79が設けられる。外受圧部77の右側に圧力室81が形成される。その圧力室81は、第2検出ロッド42の軸心に沿って形成した貫通孔82と第2伝動室67とを介して、第1駆動室11へ連通される。第2伝動室67に挿入した前記第2伝動部材70が第1駆動室11へ脱落することは、その第2伝動室67の内周壁に設けたストッパー部67aによって防止されている。
前記の弁孔84の上端部によって第2検出弁32の入口32aが構成される。その入口32aは、前記の第2供給路B2を介して第2供給ポートA2へ連通される。
図1Aから図1Cのアンクランプ状態では、上側の第1駆動室11の圧油が排出されると共に下側の第2駆動室12に圧油が供給されている。これにより、ピストン10が上昇し、そのピストン10の肩部10cがシリンダ孔5の段部5cで受け止められ、当該ピストン10が上限位置へ上昇されている。また、出力ロッド15は、内封止部材25の封止断面積に相当する受圧面積に作用する上向き力によって図1Aのアンクランプ上昇位置に保持されている。
次いで、上記ピストン10が旋回用ストローク下降したときに、上記出力ロッド15(及びクランプアーム16)がほぼ90度旋回すると共に、上記ピストン10の下部が前記の被駆動部15aに接当する。これと同時に、上記出力ロッド15の下端に設けた前記の嵌合部15bと前記の嵌合穴3bとの位相が合致し(図3Cを参照)、その嵌合穴3bに上記の嵌合部15bが対面する。
引き続いて、図5Bの二点鎖線図に示すように、ピストン10が第2ストロークS2だけ下降したときに、連結ロッド78の環状の出口溝86が弁孔84に対面して、第2検出弁32が全開される。このため、第2供給ポートA2へ供給された加圧エアは、第2供給路B2と弁孔84と出口溝86と2つの放射溝87,89と環状流路90とを通って前記排出路61へ流れる。その排出路61の加圧エアが逆止弁62のボール62bを押し開いて外気へ排出される(図2Cを参照)。
即ち、まず、上記ピストン10及び出力ロッド15が第2駆動室12の油圧力によって真っ直ぐに上昇し、その出力ロッド15の前記フランジ23が前記の上壁2に受け止められる。次いで、図1Aに示すように、回転しながら上昇する上記ピストン10が出力ロッド15を平面視で反時計回りの方向へ旋回させるのである。
ハウジング1の上壁2に挿入された出力ロッド15の外周側で、当該上壁2に、下降検出用の第1検出弁31と上昇検出用の第2検出弁32との2つの検出弁を配置したので、そのハウジング1の下壁3をテーブル等の固定台に取付けたり、当該ハウジング1の下半部を固定台の取付け穴に挿入した場合などでも、上記2つの検出弁31,32に上横側や上側からアクセスすることが可能となる。このため、検出弁31,32のメンテナンスに手間がかからない。
また、上記2つの検出弁31,32に検出用の加圧エアを供給する第1供給路B1及び第2供給路B2を上壁2内に設けると共に、第1供給ポートA1及び第2供給ポートA2を上壁2のフランジ7の据付面7aに開口させたので、加圧エアの供給システムを簡素に構成できる。
さらに、上記2つの検出弁31,32は、上壁2内に設置される際に、その上壁2の余剰空間を設置スペースとして利用可能なので、クランプの主要構成要素としてのシリンダ装置をコンパクトに造れる。
下降検出用の前記第1検出弁31は、前記出力ロッド15が下降位置から上限位置へ移動する途中で当該出力ロッド15によって開弁されると共に、その出力ロッド15が前記の上限位置から所定の第1ストロークS1下降したときに閉弁されるように構成すればよい。従って、その第1検出弁31は、出力ロッド15が上限位置からクランプストローク領域(前記の直進溝26aのストローク領域に相当する領域)に下降したときに全閉される場合や、当該出力ロッド15が上限位置から上記クランプストローク領域の近傍に下降したときに全閉される場合などが考えられる。
また、上昇検出用の前記第2検出弁32は、前記ピストン10が下降位置から上限位置又はその近傍位置へ移動したときに当該ピストン10によって閉弁されると共に、そのピストン10が前記の上限位置から所定の第2ストロークS2下降したときに開弁されるように構成すればよい。従って、その第2検出弁32は、上限位置で全閉されることに代えて、上限位置の近傍に上昇したときに全閉されるように構成してもよい。
また、上記2つの検出弁31,32の設置箇所は、ハウジング1の上壁2の4辺に対応する4つの壁部分のうちの平面視で右側の壁部分に配置するとしたが、これに代えて、平面視で上側の壁部分や下側の壁部分に配置してもよい。その上壁2は、平面視で長方形状に形成することに代えて正方形状に形成してもよい。
上記の各検出弁31,32の弁構造は、ポペット形とスプール形とのいずれかの構造を任意に選択可能である。
第1検出弁31を操作する第1操作部23aは、出力ロッド15に設けることに代えて、ピストン10に設けてもよい。また、第2検出弁32を操作する第2操作部10bは、ピストン10に設けることに代えて、出力ロッド15に設けてもよい。
出力ロッド15とピストン10とのいずれか一方に、第1操作部23a及び第2操作部10bを設ける。当該出力ロッド15とピストン10とのいずれか一方が上限位置またはその近傍位置から所定量だけ下降したときに、前記第1操作部23aは下降検出用の第1検出弁31が閉じるのを許容すると共に、前記一方が下降位置から所定量だけ上昇したときに、第1操作部23aが第1被操作部49を介して第1検出弁31を開くように構成する。また、出力ロッド15とピストン10とのいずれか一方が下降位置から所定量だけ上昇したときに、第2操作部10bが第2被操作部79を介して上昇検出用の第2検出弁32を閉じるように構成すると共に、前記一方が上限位置またはその近傍位置から所定量だけ下降したときに、第2操作部10bは第2検出弁32が開くのを許容するように構成する。
上記2つの検出弁31,32のいずれか一方を省略してもよい。
さらに、本発明のシリンダ装置は、クランプの技術分野とは異なる技術分野に利用することも可能である。
その他に、当業者が想定できる範囲で種々の変更を行えることは勿論である。
Claims (18)
- ハウジング(1)内に昇降可能に挿入された環状のピストン(10)と、そのピストン(10)の筒孔(10a)に挿入されると共に前記ハウジング(1)の上壁(2)に挿入された出力ロッド(15)と、前記ピストン(10)の上側に配置されると共に駆動用の加圧流体が供給および排出される駆動室(11)とを備え、前記ピストン(10)を前記出力ロッド(15)に対して昇降させることによって当該出力ロッド(15)が旋回するように構成したシリンダ装置において、
前記出力ロッド(15)の外周側で前記の上壁(2)に周方向へ所定の間隔をあけて配置された下降検出用の第1検出弁(31)及び上昇検出用の第2検出弁(32)と、
前記駆動室(11)の近傍で前記第1検出弁(31)及び前記第2検出弁(32)にそれぞれ設けた第1被操作部(49)及び第2被操作部(79)であって、前記出力ロッド(15)と前記ピストン(10)の両者のうちの一方に連動可能に配置された第1被操作部(49)及び前記両者のうちの他方に連動可能に配置された第2被操作部(79)と、
前記第1検出弁(31)及び前記第2検出弁(32)の各入口(31a)(32a)に検出用の加圧エアを供給する第1供給路(B1)及び第2供給路(B2)と、
を備えることを特徴とするシリンダ装置。 - ハウジング(1)内に昇降可能に挿入されたピストン(10)と、そのピストン(10)の上側に配置されると共に駆動用の加圧流体が供給および排出される駆動室(11)と、前記ハウジング(1)の上壁(2)に挿入された出力ロッド(15)とを備え、前記駆動室(11)へ供給された加圧流体が前記ピストン(10)を介して前記出力ロッド(15)を下降駆動するように構成したシリンダ装置において、
前記出力ロッド(15)の外周側で前記の上壁(2)に周方向へ所定の間隔をあけて配置された下降検出用の第1検出弁(31)及び上昇検出用の第2検出弁(32)と、
前記駆動室(11)の近傍で前記第1検出弁(31)及び前記第2検出弁(32)にそれぞれ設けた第1被操作部(49)及び第2被操作部(79)であって、前記ピストン(10)と前記出力ロッド(15)とのうちのいずれか一方に連動可能に配置された第1被操作部(49)及び第2被操作部(79)と、
前記第1検出弁(31)及び前記第2検出弁(32)の各入口(31a)(32a)に検出用の加圧エアを供給する第1供給路(B1)及び第2供給路(B2)と、
を備えることを特徴とするシリンダ装置。 - 請求項1又は2のシリンダ装置において、
前記の上壁(2)を平面視で長方形状または正方形状に形成し、その上壁(2)の周方向の4辺に対応する4つの壁部分のうちのいずれかの壁部分に、前記駆動室(11)へ連通される給排路(21)を形成し、
前記4つの壁部分のうちの前記給排路(21)を形成した壁部分を除いた壁部分のいずれかに、前記第1検出弁(31)及び第2検出弁(32)を設けた、
ことを特徴とするシリンダ装置。 - 請求項3のシリンダ装置において、
前記の上壁(2)は取付け用のフランジ(7)を有し、そのフランジ(7)の外周部の下面に形成した据付面(7a)に、前記給排路(21)へ連通される給排ポート(P1)を開口させた、
ことを特徴とするシリンダ装置。 - 請求項4のシリンダ装置において、
前記第1検出弁(31)及び前記第2検出弁(32)の下方位置で前記据付面(7a)に、前記第1供給路(B1)及び前記第2供給路(B2)に連通される第1供給ポート(A1)及び第2供給ポート(A2)を開口させた、
ことを特徴とするシリンダ装置。 - 請求項1のシリンダ装置において、
前記出力ロッド(15)は第1操作部(23a)を有し、その第1操作部(23a)は、前記出力ロッド(15)が下降位置から上限位置またはその近傍位置へ移動したときに前記第1被操作部(49)を外方へ押して当該第1検出弁(31)を開弁させると共に、前記出力ロッド(15)が前記の上限位置から所定の第1ストローク(S1)下降したときに前記第1被操作部(49)が内方へ移動するのを許容して前記第1検出弁(31)を閉弁させ、
前記ピストン(10)は第2操作部(10b)を有し、その第2操作部(10b)は、前記ピストン(10)が下降位置から上限位置またはその近傍位置へ移動したときに前記第2被操作部(79)を外方へ押して当該第2検出弁(32)を閉弁させると共に、前記ピストン(10)が前記の上限位置から所定の第2ストローク(S2)下降したときに前記第2被操作部(79)が内方へ移動するのを許容して当該第2検出弁(32)を開弁させる、
ことを特徴とするシリンダ装置。 - 請求項2のシリンダ装置において、
前記出力ロッド(15)とピストン(10)とのいずれか一方に、第1操作部(23a)及び第2操作部(10b)を設け、
当該出力ロッド(15)とピストン(10)とのいずれか一方が上限位置またはその近傍位置から所定量だけ下降したときに、前記第1操作部(23a)は前記第1検出弁(31)が閉じるのを許容するように構成し、
当該出力ロッド(15)とピストン(10)とのいずれか一方が下降位置から所定量だけ上昇したときに、前記第2操作部(10b)が前記第2被操作部(79)を介して前記第2検出弁(32)を閉じるように構成した、
ことを特徴とするシリンダ装置。 - 請求項6又は7のシリンダ装置において、
前記の第1被操作部(49)と前記の第1操作部(23a)との間に、その第1操作部(23a)の上昇移動を横方向への移動に変換する第1伝動部材(40)を設け、
前記の第2被操作部(79)と前記の第2操作部(10b)との間に、その第2操作部(10b)の上昇移動を横方向への移動に変換する第2伝動部材(70)を設けた、
ことを特徴とするシリンダ装置。 - 請求項8のシリンダ装置において、
前記駆動室(11)の上部に連通される第1伝動室(37)及び第2伝動室(67)に、ボールからなる前記第1伝動部材(40)及び第2伝動部材(70)をそれぞれ挿入し、
前記第1伝動部材(40)及び第2伝動部材(70)が前記第1伝動室(37)及び第2伝動室(67)から前記駆動室(11)へ脱落するのを防止するためのストッパー部(37a)(67a)を設けた、
ことを特徴とするシリンダ装置。 - ハウジング(1)内に昇降可能に挿入された環状のピストン(10)と、そのピストン(10)の筒孔(10a)に挿入されると共に前記ハウジング(1)の上壁(2)に挿入された出力ロッド(15)と、前記ピストン(10)の上側に配置されると共に駆動用の加圧流体が供給および排出される駆動室(11)とを備え、前記ピストン(10)を前記出力ロッド(15)に対して昇降させることによって当該出力ロッド(15)が旋回するように構成したシリンダ装置において、
前記ハウジング(1)の上部に横向きに配置された上昇検出用の検出弁(32)と、
前記ピストン(10)と前記出力ロッド(15)との一方に設けた操作部(10b)と、
前記駆動室(11)の近傍で前記操作部(10b)に連動可能なように前記検出弁(32)に設けた被操作部(79)と、
前記駆動室(11)の上部へ連通する伝動室(67)に挿入されると共に前記操作部(10b)の上昇移動を前記被操作部(79)の横方向への移動に変換する伝動部材(70)と、
前記検出弁(32)の入口(32a)に検出用の加圧エアを供給する供給路(B2)と、
を備えることを特徴とするシリンダ装置。 - ハウジング(1)内に昇降可能に挿入されたピストン(10)と、そのピストン(10)の上側に配置されると共に駆動用の加圧流体が供給および排出される駆動室(11)と、前記ハウジング(1)の上壁(2)に挿入された出力ロッド(15)とを備え、前記駆動室(11)へ供給された加圧流体が前記ピストン(10)を介して前記出力ロッド(15)を下降駆動するように構成したシリンダ装置において、
前記ハウジング(1)の上部に横向きに配置された上昇検出用の検出弁(32)と、
前記ピストン(10)と前記出力ロッド(15)との一方に設けた操作部(10b)と、
前記駆動室(11)の近傍で前記操作部(10b)に連動可能なように前記検出弁(32)に設けた被操作部(79)と、
前記駆動室(11)の上部へ連通する伝動室(67)に挿入されると共に前記操作部(10b)の上昇移動を前記被操作部(79)の横方向への移動に変換する伝動部材(70)と、
前記検出弁(32)の入口(32a)に検出用の加圧エアを供給する供給路(B2)と、
を備えることを特徴とするシリンダ装置。 - 請求項10又は11のシリンダ装置において、
ボールからなる前記伝動部材(70)が前記伝動室(67)から前記駆動室(11)へ脱落するのを防止するためのストッパー部(67a)を設けた、
ことを特徴とするシリンダ装置。 - 請求項1又は2のシリンダ装置において、
前記第1検出弁をポぺット弁によって構成すると共に、前記第2検出弁をスプール弁によって構成した、ことを特徴とするシリンダ装置。 - 請求項1又は2のシリンダ装置において、
前記第1検出弁をスプール弁によって構成すると共に、前記第2検出弁をポぺット弁によって構成した、ことを特徴とするシリンダ装置。 - 請求項1又は2のシリンダ装置において、
前記第1検出弁と前記第2検出弁とをポぺット弁によって構成した、ことを特徴とするシリンダ装置。 - 請求項1又は2のシリンダ装置において、
前記第1検出弁と前記第2検出弁とをスプール弁によって構成した、ことを特徴とするシリンダ装置。 - 請求項10又は11のシリンダ装置において、
前記検出弁をスプール弁によって構成した、ことを特徴とするシリンダ装置。 - 請求項10又は11のシリンダ装置において、
前記検出弁をポぺット弁によって構成した、ことを特徴とするシリンダ装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480005440.4A CN104937285B (zh) | 2013-01-22 | 2014-01-16 | 缸装置 |
US14/653,898 US9909600B2 (en) | 2013-01-22 | 2014-01-16 | Cylinder apparatus |
EP14743854.3A EP2949950B1 (en) | 2013-01-22 | 2014-01-16 | Cylinder device |
KR1020157018845A KR102088546B1 (ko) | 2013-01-22 | 2014-01-16 | 실린더 장치 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-022706 | 2013-01-22 | ||
JP2013022706 | 2013-01-22 | ||
JP2013-108398 | 2013-05-02 | ||
JP2013108398A JP6092710B2 (ja) | 2013-01-22 | 2013-05-02 | シリンダ装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014115628A1 true WO2014115628A1 (ja) | 2014-07-31 |
Family
ID=51227420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/050633 WO2014115628A1 (ja) | 2013-01-22 | 2014-01-16 | シリンダ装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9909600B2 (ja) |
EP (1) | EP2949950B1 (ja) |
JP (1) | JP6092710B2 (ja) |
KR (1) | KR102088546B1 (ja) |
CN (1) | CN104937285B (ja) |
WO (1) | WO2014115628A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6076735B2 (ja) | 2012-12-28 | 2017-02-08 | 株式会社コスメック | シリンダ装置 |
JP6552310B2 (ja) * | 2015-06-26 | 2019-07-31 | 株式会社コスメック | シリンダ装置 |
US10280946B2 (en) * | 2016-05-20 | 2019-05-07 | Greenlee Tools, Inc. | Adapter for mounting a cylinder for a fluid powered linear actuator to a fluid channel |
JP6590217B2 (ja) * | 2016-06-20 | 2019-10-16 | Smc株式会社 | シリンダ装置 |
JP6962557B2 (ja) * | 2017-10-31 | 2021-11-05 | 株式会社コスメック | 電動式クランプ装置 |
JP6971454B2 (ja) * | 2017-11-13 | 2021-11-24 | 株式会社コスメック | 検出弁付きシリンダ装置 |
IT201800000538A1 (it) * | 2018-01-04 | 2019-07-04 | Walter Bronzino | Dispositivo di presa-pezzi per macchine utensili e centri di lavoro, munito di sistema di rilevamento della posizione delle griffe |
JP6927896B2 (ja) * | 2018-01-30 | 2021-09-01 | トヨタ自動車株式会社 | シリンダ装置 |
JP7390029B2 (ja) * | 2018-08-17 | 2023-12-01 | 株式会社コスメック | シリンダ装置 |
US10612596B1 (en) * | 2018-09-24 | 2020-04-07 | Schaeffler Technologies AG & Co. KG | Anti-creep deep groove ball bearing |
IT202000006721A1 (it) * | 2020-03-31 | 2021-10-01 | Hydroblock S R L | Apparecchio per il bloccaggio di pezzi su macchine utensili |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5016385U (ja) * | 1973-06-11 | 1975-02-21 | ||
JPS60129410A (ja) | 1983-12-19 | 1985-07-10 | Honda Motor Co Ltd | シリンダ用リミツトバルブ装置 |
JPH09257005A (ja) * | 1996-03-21 | 1997-09-30 | Sanko:Kk | シリンダ装置の駆動限の検出装置 |
JPH11292500A (ja) * | 1998-04-01 | 1999-10-26 | Pabotto Giken:Kk | エァバランサー |
JP2004068875A (ja) * | 2002-08-05 | 2004-03-04 | Pascal Engineering Corp | 流体圧シリンダ |
WO2013051333A1 (ja) * | 2011-10-07 | 2013-04-11 | パスカルエンジニアリング株式会社 | 流体圧シリンダ及びクランプ装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3661053A (en) * | 1970-12-04 | 1972-05-09 | Parker Hannifin Corp | Reversing switch actuator for fluid motor |
JPS5929803A (ja) * | 1982-08-10 | 1984-02-17 | Iseki & Co Ltd | 油圧シリンダ等の伸縮状態検出装置 |
PL159455B1 (pl) * | 1989-05-19 | 1992-12-31 | Silownik hydrauliczny z czujnikiem polozenia tloka PL PL PL | |
JP2000170713A (ja) * | 1998-12-09 | 2000-06-20 | Kubota Corp | 位置検出装置付シリンダー |
DE20014353U1 (de) * | 2000-08-19 | 2000-12-07 | Festo AG & Co, 73734 Esslingen | Linearantrieb |
JPWO2007145142A1 (ja) * | 2006-06-13 | 2009-10-29 | 株式会社コスメック | 旋回式クランプ |
JP5801608B2 (ja) * | 2010-06-29 | 2015-10-28 | パスカルエンジニアリング株式会社 | クランプ装置 |
JP5819449B2 (ja) * | 2014-01-08 | 2015-11-24 | 成斗建設株式会社 | ソーラパネルの支柱構築用治具 |
-
2013
- 2013-05-02 JP JP2013108398A patent/JP6092710B2/ja active Active
-
2014
- 2014-01-16 KR KR1020157018845A patent/KR102088546B1/ko active IP Right Grant
- 2014-01-16 CN CN201480005440.4A patent/CN104937285B/zh active Active
- 2014-01-16 US US14/653,898 patent/US9909600B2/en active Active
- 2014-01-16 WO PCT/JP2014/050633 patent/WO2014115628A1/ja active Application Filing
- 2014-01-16 EP EP14743854.3A patent/EP2949950B1/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5016385U (ja) * | 1973-06-11 | 1975-02-21 | ||
JPS60129410A (ja) | 1983-12-19 | 1985-07-10 | Honda Motor Co Ltd | シリンダ用リミツトバルブ装置 |
JPH09257005A (ja) * | 1996-03-21 | 1997-09-30 | Sanko:Kk | シリンダ装置の駆動限の検出装置 |
JPH11292500A (ja) * | 1998-04-01 | 1999-10-26 | Pabotto Giken:Kk | エァバランサー |
JP2004068875A (ja) * | 2002-08-05 | 2004-03-04 | Pascal Engineering Corp | 流体圧シリンダ |
WO2013051333A1 (ja) * | 2011-10-07 | 2013-04-11 | パスカルエンジニアリング株式会社 | 流体圧シリンダ及びクランプ装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2949950A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP2949950A1 (en) | 2015-12-02 |
EP2949950A4 (en) | 2016-12-28 |
US20150345521A1 (en) | 2015-12-03 |
EP2949950B1 (en) | 2018-04-11 |
JP6092710B2 (ja) | 2017-03-08 |
US9909600B2 (en) | 2018-03-06 |
KR20150108828A (ko) | 2015-09-30 |
JP2014159868A (ja) | 2014-09-04 |
CN104937285B (zh) | 2017-02-15 |
CN104937285A (zh) | 2015-09-23 |
KR102088546B1 (ko) | 2020-03-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6092710B2 (ja) | シリンダ装置 | |
JP6076735B2 (ja) | シリンダ装置 | |
WO2016167169A1 (ja) | シリンダ装置 | |
KR102342061B1 (ko) | 실린더 장치 | |
WO2014002684A1 (ja) | クランプ装置 | |
JP2010007751A (ja) | 真空弁 | |
JP5779194B2 (ja) | 位置決め装置 | |
JP6298294B2 (ja) | シリンダ装置 | |
US11168808B2 (en) | Valve device for controlling media flows of any type | |
JP6218308B2 (ja) | ワークパレット | |
JP6285655B2 (ja) | クランプ装置 | |
JP2008025743A (ja) | 油圧式ロック装置 | |
KR101600876B1 (ko) | 씰링확인이 가능한 슬릿밸브 | |
KR20180063979A (ko) | 선택가능한 포트를 갖는 체크밸브 겸용 전자팽창밸브 및 냉난방 시스템 | |
JP2017154212A (ja) | 動作検出機能付き位置決め装置 | |
JP6670528B2 (ja) | 破損検出機能付き位置決め装置 | |
JP6617021B2 (ja) | 異常状態の検出機構付きクランプ装置 | |
JP6244089B2 (ja) | クランプ装置 | |
JP2015003346A (ja) | クランプ装置 | |
JP6202705B2 (ja) | 流体圧シリンダ | |
JP5243382B2 (ja) | センサ付きバルブ | |
JPS6116561B2 (ja) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14743854 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014743854 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14653898 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20157018845 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |