Abstract: Provided is a check valve device having a structure with which pressurized fluid is less likely to leak from a flowpath blocked by a valve. A flowpath is formed in a block, and a main valve and a sub-valve are provided in series along the flowpath. A primary-side chamber, an intermediate chamber, and a secondary-side chamber, which form a section of the flowpath, are formed in that order from the one end of the flowpath to the other end thereof. The main valve and the sub-valve are opened by a pilot valve.

Abstract: A discharge passage (42) of a work support includes: an annular space (2a) created between an insertion hole (2), provided through a leading end portion of a housing (1), and a support rod (3); and a discharge port (42a) provided at the leading end portion of the housing (1). The work support is designed so that an amount of gas pushed out of an outlet chamber (32) by an output member (24) when the output member (24) moves from its base-end-side limit position to its leading-end-side limit position is larger than a capacity of an accommodation chamber (45) created on a base end side relative to the support rod (3) due to movement of the support rod (3) from its base-end-side limit position to a leading-end-side position.

Abstract: Provided is a magnetic clamp device that can be easily made into a state where a fall prevention function can be exerted when attaching adsorption objects. A support member (20) is protruded horizontally from an upper part of a magnetic plate (7) of the magnetic clamp device. A protruding member (28) is protruded upward from a mold as an adsorption object that is adsorbed and fixed to an adsorption surface (8) of the magnetic plate (7). The mold (9) is arranged so that the engagement portion (32) faces the locking portion (27) with a predetermined gap above the locking portion (27) in a state where the mold (9) is adsorbed and fixed at a predetermined position on the adsorption surface (8).

Abstract: When an operation portion (38) provided at an axial end portion of a valve member (37) is pushed into a valve case (31) provided to a first block (3), a clamping apparatus transitions from a first state, in which communication between: each of a primary-side pressure fluid supply/discharge port (34) and a secondary-side pressure fluid supply/discharge port (35); and a pressure fluid discharge port (36) is open, to a second state, in which communication between: each of the primary-side pressure fluid supply/discharge port (34) and the secondary-side pressure fluid supply/discharge port (35); and the pressure fluid discharge port (36) is closed.

Abstract: A support rod (3) is inserted in a housing (1) so as to be movable in an up-down direction. An actuation chamber (21) is provided in a lower end portion of the housing (1). An output member (24) is moved upward by pressurized oil supplied to the actuation chamber (21). In the actuation chamber (21), to which pressurized oil is supplied, a release spring (33) is attached between a leading end wall (31) of the actuation chamber (21) and a flange portion (25a) provided to a base end portion of the output member (24). The release spring (33) biases the output member (24) downward.

Abstract: A base plate (21) is attached to a side wall surface of a pallet (P). A connecting rod (22) provided so as to protrude from the base plate (21) is configured to be movable on a surface (21a) of the base plate (21). An insertion hole (18) is provided in a housing (1) attached to a robot arm (R), and the connecting rod (22) is inserted in the insertion hole (18). Two pins (23 and 24) extending in parallel to an axial direction of the connecting rod (22) are provided so as to protrude from the base plate (21). The pins (23 and 24) are respectively inserted in support holes (19 and 20) of the housing (1).

Abstract: Provided is an attaching/detaching structure that operates reliably with simple operation. The attaching/detaching structure attaches/detaches a second connecting member (4) to/from a first connecting member (3). An operation chamber (8) formed in a base member (5) of the second connecting member (4) is connected to the outside of the base member (5) via an insertion hole (7) opened to a seating surface (6) of the first connecting member (3). Two clamp arms (10) and (11) are provided in the operation chamber (8) so as to be symmetrical around an axial center of the operation chamber (8). An engaging portion (16, 17) is formed at one end (10b, 11b) in longitudinal direction of each of the clamp arms (10, 11). An engaging member (32) protruding from the second connecting member (4) can be inserted into the insertion hole (7). A lock portion (34) in which the engaging portions (16, 17) can be engaged is formed in the engaging member (32).

Abstract: The present invention enables confirmation that a mold magnetically adhered by a magnetic clamping device has been magnetically adhered by a sufficient adhesion force so as not to be pulled off from the magnetic clamping device by a mold opening force of a mold handling device. A controller 7 carries out magnetization of a magnetic clamping device 10 such that a magnetic adhesion force weaker than that in normal magnetization is generated in a state where molds M1, M2 are bound together, and carries out a test to determine whether separation of the molds M1, M2 would occur when platens 2, 3 are separated. The controller issues a warning regarding lack of guaranteed adhesion force to an operator when separation is detected, and carries out normal magnetization of the magnetic clamping device 10 when separation is not detected.

Abstract: A piston (8) is provided in a motor main body (4). A first motor chamber (9) is provided above the piston (8) and a second motor chamber (10) is provided below the piston (8). A pilot valve element (18) is provided so as to protrude from the piston (8). When a supply/discharge valve (13) is moved to its upper limit position or its lower limit position by the movement of the pilot valve element (18) in an up-down direction, a first valve member (25) of the supply/discharge valve (13) switches between supplying and discharging pressure fluid to and from the first motor chamber (9) and a second valve member (26) of the supply/discharge valve (13) switches between supplying and discharging pressure fluid to and from the second motor chamber (10).

Abstract: In the present invention, constructed is a highly reliable system that does not allow unforeseen conditions to occur in the remote diagnosis of a clamp device. All combinations of status of a state detection switch mounted on a clamp device are anticipated in advance by a recursive method, and the states are defined with no omissions. A control unit 9 includes: a main body memory 9c that stores the ON/OFF state of a state switch together with the status of an injection molding machine main body, the clamp status and time information; and a main body communication unit 9d which is capable of short-range wireless communication. A message diagnosing a failure is stored in a smartphone 12 for all combinations of the ON/OFF state of the state detection switch for each of the following cases: whether in mold replacement mode or not; and whether a clamp device is in a clamped state or an unclamped state, or in a state other than the forgoing.

Abstract: A plurality of detection valves (12 and 13) are provided to a housing (1), and at least one air passage (14 and 15), which communicatively connects the detection valves (12 and 13) to each other in series, are provided to the housing (1). One or some of the detection valves (12 and 13) are each configured as a throttle detection valve (13) including a throttle passage (56a).

Abstract: Provided is a clamp system with enhanced functionality achieved by detecting the behavior of an object to be clamped, using a stroke-end position detector that has been used for switching stroke operations. A clamp device 1 has an output member 12 which executes a stroke movement causing a change in the distance by which a coil 15 is inserted into a hole 14 having a bottom. A converter 23 outputs a measurement value of the inductance of the coil 15. The inductance of the coil 15 when a work W has been clamped by the output member 12 is stored in a work clamp point memory 22e, and a clamp area indicating a variation range permitted with respect to a work clamp point is set in a clamp area memory. During processing of the work, a control unit 2 measures the inductance of the coil 15, determines whether the work clamp point is within the range of the clamp area, and, if the range is exceeded, issues a signal indicating an emergency stop.

Abstract: Provided is a magnetic clamp device having a disassembly structure that is easy to maintain. In the magnetic clamp device 1, a magnetic pole 21 and an alnico magnet 23 each have fastening holes 21a, 23a that communicate with each other. The cavity portion 31 of the plate body 3 has an opening 33 that penetrates from the bottom surface 32b thereof to the back side of the plate body 3. A cap 7 having a base portion 71 having a bolt hole 74 communicating with the fastening holes 21a, 23a and a flange portion 72 abutting the surface 3b of the back side of the plate body 3 is inserted into the opening 33. A bolt 8 inserted into the fastening hole 23a of the magnetic pole 21 and the alnico magnet 23 from the front side of a magnetic pad 2 is screwed into a female screw thread 74a provided in the bolt hole 74 of the cap 7.

Abstract: A clamping apparatus includes: a support member (19) inserted in a leading-end-side portion of the housing (1) so as to be movable in its axial direction; a resistance giving mechanism (34) configured to give resistance to axial movement of the support member (19); and an engagement maintaining mechanism (26) configured to maintain engagement between a wedge surface (24) of a clamp rod (7) and a locking member (23). When the clamp rod (7) is driven toward a leading end side for unclamping action, the clamp rod (7) moves the locking member (23) toward the leading end side via the support member (19) after the locking member (23) moves radially inward.

Abstract: An ascent-detecting air supply port (33), a descent-detecting air supply port (43), and an air discharge port (44) are provided to a housing (2). The ascent-detecting air supply port (33) is communicatively connected to an air outlet (38) by an ascent-detecting air passage (39). The descent-detecting air supply port (43) is communicatively connected to the air discharge port (44) by a descent-detecting air passage (45). The descent-detecting air passage (45) is closed by a valve mechanism (49) including: a valve surface (50) provided on a piston portion (15); and a valve seat (51) provided on an inner surface of the housing (2), when an advance piston (14) is retracted to a lowered position.

Abstract: An output member (7) is inserted in a housing (5) so as to be movable in a left-right direction. A lock chamber (20) is provided to the right of the output member (7), as a first actuation chamber. Compressed air is supplied to and discharged from the lock chamber (20) through a first supply and discharge passage (24) provided in the housing (5). A first holding valve (30) provided to an intermediate portion of the first supply and discharge passage (24) is configured to close and open the first supply and discharge passage (24).

Abstract: A clamping apparatus includes: locking members (80) insertable into a hole (11) of a workpiece (10); and a clamp rod (70) configured to make a wedge engagement with the locking members (80) from above. Each locking member (80) includes a base portion (85) configured to be inserted into the hole (11); and a protruding portion (87) located above the base portion (85). A relative movement restriction mechanism (M) configured to restrict downward movement of the clamp rod (70) relative to the locking members (80) within a predetermined travel distance allows descent of outer peripheral surfaces (85a) of the base portions (85) relative to an inner peripheral surface of the hole (11) when the locking members (80) are in a diameter-expanded position.

Abstract: An embodiment of the present invention simplifies the configuration of a suction positioning device. An embodiment of the present invention includes: an output rod (3) having an air discharge passage (11); a sleeve (4) which has a tapered outer circumferential surface (12) and is elastically deformable so as to have a reduced diameter; a transmission member (5) having a tapered inner circumferential surface (13); a plurality of balls (B) which are inserted between the tapered inner circumferential surface (13) and the tapered outer circumferential surface (12); and a suction pad (7) attached to the output rod (3) so as to communicate with the air discharge passage (11).

Abstract: A piston (8) is provided in a motor main body (4). A first motor chamber (9) is provided above the piston (8) and a second motor chamber (10) is provided below the piston (8). A pilot valve element (18) is provided so as to protrude from the piston (8). When a supply/discharge valve (13) is moved to its upper limit position or its lower limit position by the movement of the pilot valve element (18) in an up-down direction, a first valve member (25) of the supply/discharge valve (13) switches between supplying and discharging pressure fluid to and from the first motor chamber (9) and a second valve member (26) of the supply/discharge w valve (13) switches between supplying and discharging pressure fluid to and from the second motor chamber (10).

Abstract: A discharge passage (42) of a work support includes: an annular space (2a) created between an insertion hole (2), provided through a leading end portion of a housing (1), and a support rod (3); and a discharge port (42a) provided at the leading end portion of the housing (1). The work support is designed so that an amount of gas pushed out of an outlet chamber (32) by an output member (24) when the output member (24) moves from its base-end-side limit position to its leading-end-side limit position is larger than a capacity of an accommodation chamber (45) created on a base end side relative to the support rod (3) due to movement of the support rod (3) from its base-end-side limit position to a leading-end-side position.