Abstract: A magnetic clamping device is provided with a magnetic force generating mechanism at which a housing cover body comprising soft magnetic material is arranged centrally at a hollow housing portion, a nonmagnetic metal frame body comprising a nonmagnetic body is made to engage with the outside circumference thereof, a plurality of arcuate nonreversible permanent magnets are arranged in annular fashion within an annular magnet housing space at the back of this nonmagnetic metal frame body, a reversible permanent magnet and a magnetic polarity switching coil disposed peripherally with respect thereto are provided at the back of the housing cover body, and a base cover body that blocks a back opening of the hollow housing portion is provided, the magnetic clamping device being characterized in that the metal frame body is joined in integral fashion to the housing cover body and the baseplate.

Abstract: A mold posture setting method for an injection molding machine includes: a preparation step of preparing, in advance, a mold posture setting device for setting of a posture of a mold set, and fixing its position on a platen plate surface; a mold bringing and fitting step of bringing the mold set into the inter platen space and fitting a locating ring of the mold set into a fitting hole of the plate surface; and a mold posture setting step of setting the posture of the mold set to a prescribed posture by parallel shifting a mold edge regulation member via a guidance means.

Abstract: A magnetic clamping device is provided with a magnetic force generating mechanism at which a housing cover body comprising soft magnetic material is arranged centrally at a hollow housing portion, a nonmagnetic metal frame body comprising a nonmagnetic body is made to engage with the outside circumference thereof, a plurality of arcuate nonreversible permanent magnets are arranged in annular fashion within an annular magnet housing space at the back of this nonmagnetic metal frame body, a reversible permanent magnet and a magnetic polarity switching coil disposed peripherally with respect thereto are provided at the back of the housing cover body, and a base cover body that blocks a back opening of the hollow housing portion is provided, the magnetic clamping device being characterized in that the metal frame body is joined in integral fashion to the housing cover body and the baseplate.

Abstract: An injection machine which includes a mold falling prevention device that prevents a mold fixed to a mold fixing surface from falling off from the mold fixing surface and in which are provided a bottom edge restriction member at a lower portion of said mold fixing surface so that its vertical position is variable, for implementing restriction so that the bottom edge portion of the mold does not separate from the mold fixing surface, first and second intermediate restriction members at intermediate level portions of the mold fixing surface so that their horizontal positions are variable, for respectively implementing restrictions so that a one edge portion of the mold and an other edge portion thereof in the horizontal direction do not separate from the mold fixing surface, and a vertical direction position determination mechanism that receives and stops a bottom edge surface of the mold and determines a position of the mold in the vertical direction.

Abstract: In a mold conveyance trolley, a trolley body includes vertical first and second side plates, first and second structural frames capable of providing rigidity in vertical planes to the front portion and the rear portion of the trolley body; and a plurality of plate members intersecting the first and second structural frames; each of the first and second structural frames includes a plurality of linking members disposed at different height positions and linked to the first and second side plates, and a plurality of steel pipe members fitted over each of the plurality of linking members and have a spacer function.

Abstract: A hydraulic cylinder includes a rod insertion hole formed in a piston member, an auxiliary rod provided to a head side end wall member and capable of being inserted into the rod insertion hole, a rod fitting hole formed to pass through the head side end wall member and the auxiliary rod, a movable rod installed in the rod fitting hole and whose end portion toward a head side end wall projects to the exterior, a movement restriction mechanism that prohibits shifting of the movable rod in an unclamping state and permits shifting of the movable rod in a clamping state.

Abstract: In a mold conveyance trolley, a trolley body includes vertical first and second side plates, first and second structural frames capable of providing rigidity in vertical planes to the front portion and the rear portion of the trolley body; and a plurality of plate members intersecting the first and second structural frames; each of the first and second structural frames includes a plurality of linking members disposed at different height positions and linked to the first and second side plates, and a plurality of steel pipe members fitted over each of the plurality of linking members and have a spacer function.

Abstract: A balancer mechanism for a rotating shaft is configured to prevent deviation of the axis of the rotating shaft. The balancer mechanism (20) has an assistance torque generation device (21) for generating an assistance torque. The assistance torque generation device (21) includes a cam member (24) fixed to the rotating shaft (4), a cam follower member (25) and a gas spring (27). The balancer mechanism has a reaction force generation device (22) provided for generating, a balancing moment on the rotating shaft that cancels out a tilting moment that tilts the rotating shaft (4) around a bearing member (9) in a direction to separate it from the assistance torque generation device (21) and which is caused by the biasing force of the gas spring (27).

Abstract: An injection machine which includes a mold falling prevention device that prevents a mold fixed to a mold fixing surface from falling off from the mold fixing surface and in which are provided a bottom edge restriction member at a lower portion of said mold fixing surface so that its vertical position is variable, for implementing restriction so that the bottom edge portion of the mold does not separate from the mold fixing surface, first and second intermediate restriction members at intermediate level portions of the mold fixing surface so that their horizontal positions are variable, for respectively implementing restrictions so that a one edge portion of the mold and an other edge portion thereof in the horizontal direction do not separate from the mold fixing surface, and a vertical direction position determination mechanism that receives and stops a bottom edge surface of the mold and determines a position of the mold in the vertical direction.

Abstract: A balancer mechanism for a rotating shaft is capable of preventing deviation of the axis of the rotating shaft. The balancer mechanism (20) has an assistance torque generation means (21) for generating an assistance torque; the assistance torque generation means (21) includes a cam member (24) fixed to the rotating shaft (4), a cam follower member (25) and a gas spring (27); and a reaction force generation means (22) is provided for generating, by the biasing force of the gas spring (27), a balancing moment that cancels out a tilting moment that tilts the rotating shaft (4) around a bearing member (9) in a direction to separate it from the assistance torque generation means (21).

Abstract: A slide lock apparatus for a press machine includes: a flange member fixed over the shaft member for driving the slide, and having a flange portion; an annular main member fixed to the main frame, and having an annular member facing the flange portion; a plurality of reception holes formed in the annular member; a plurality of pin members installed in the plurality of reception holes so as to be shiftable therein; a plurality of actuators for driving the plurality of pin members between retracted positions and advanced positions penetrating into admission holes in the flange portion; a first locking member for locking the plurality of pin members in retracted positions; a first drive device for rotationally driving the first locking member; a second locking member for locking the plurality of pin members in their advanced positions; and a second drive device for rotationally driving the second locking member.

Abstract: A hydraulic cylinder includes a rod insertion hole formed in a piston member, an auxiliary rod provided to a head side end wall member and capable of being inserted into the rod insertion hole, a rod fitting hole formed to pass through the head side end wall member and the auxiliary rod, a movable rod installed in the rod fitting hole and whose end portion toward a head side end wall projects to the exterior, a movement restriction mechanism that prohibits shifting of the movable rod in an unclamping state and permits shifting of the movable rod in a clamping state.

Abstract: A slide lock apparatus that locks the slide of a press machine includes: a flange member fixed over the exterior of a shaft member that rotates together with raising and lowering operation of the slide, and having a flange portion that is parallel to a plane orthogonal to the axis of the shaft member; an annular main member fixed to the main frame of the press machine, and having an annular member facing the flange portion with a gap between them; a plurality of reception holes formed in the annular member; a plurality of pin members installed in the plurality of reception holes so as to be shiftable therein; a plurality of actuators that are capable of driving the plurality of pin members between retracted positions in which they are not advanced toward the flange portion and advanced positions in which they are advanced to states in which they penetrate into introduction holes in the flange portion; a first locking member that is capable of locking the plurality of pin members in their retracted positions;

Abstract: An article positioning mechanism for positioning an article comprising a component or a tool with respect to a mounting portion of a movable member of a mechanical device and also restraining rotation thereof includes a holder member to which the article is fixed and a frame shaped member that is fixed to the mounting portion, the holder member including position regulation surfaces and a tapered male engagement portion that is formed as a regular polygon and also is sloped so as to approach its axis in the direction towards the mounting portion, the frame shaped member including a reference surface that receives the position regulation surfaces and positions them in the axial direction, and a tapered female engagement portion that is formed as a regular polygon and also is sloped in the same direction as the tapered male engagement portion.

Abstract: A positioning and fixing device positions a work pallet in the vertical and horizontal directions relative to a base member via a ring member, and also restricts its rotation around the vertical axis. The base member has Z reference surfaces that can stop a lower end reference surface of the ring member and position it in the vertical direction, and a tapered male engagement portion whose horizontal cross section is formed as a regular polygon having a plurality of outwardly convex circular arcuate vertex portions and a plurality of side portions, and that reduces in diameter upwards. The ring member has a tapered female engagement portion that can engage with the tapered male engagement portion so that its lower end reference surface is in contact against the Z reference surfaces.

Abstract: An object positioning/fixing device is capable of generating a clamping force by clamp bolts capable of being fastened manually and realizes high operability of the clamp bolts. A simple clamp mechanism comprises the clamp bolts as major components. The object positioning/fixing device has a cooperative assembly of the positioning mechanism and the clamp bolts.

Abstract: A fixing structure of a spindle balancer for a machine tool is described as having a flange member having a supported surface and provided fixedly to a cylinder body of a gas spring, a supporting member having a flange receiving surface and a fixing hole, and secured to the spindle head of a machine tool, and a plurality of fastening members for fastening the flange member to the supporting member so as to allow the supported surface of the flange member to abut against the flange receiving surface of the support member.

Abstract: In a work pallet positioning and fixing device that positions a work pallet over a base member in the horizontal direction and in the vertical direction and fixes it thereto by pressing forces of clamp bolts, the base member is provided with first and second reference members for positioning, and a reference seating surface and, by making bolt head accommodation holes of bolt holes for four fitting bolts fitting flange portions of the reference members partially overlap with protruding engagement portions as seen in plan view, a plurality of tapered engagement surfaces on the external peripheries of the protruding engagement portions being segmented into four sections.

Abstract: A tool unclamping device is a device capable of unclamping a tool clamped to a spindle of a machine tool, and comprises a casing, an output shaft set on this casing and capable of outputting power necessary for unclamping the tool, a motor serving as a power source capable of supplying power for driving the output shaft, a power transmission mechanism transmitting the power from the motor to the output shaft and a gas cylinder serving as an auxiliary power source capable of supplying auxiliary power to this power transmission mechanism.

Abstract: An object positioning/fixing device is capable of generating a clamping force by clamp bolts capable of being fastened manually and realizes high operability of the clamp bolts. A simple clamp mechanism comprises the clamp bolts as major components. The object positioning/fixing device has a cooperative assembly of the positioning mechanism and the clamp bolts.