Abstract: A welding torch includes: a contact tip having, on a distal-end inner circumferential surface thereof, a power supply portion that contacts a fed welding wire to supply current; and a wire guide that is provided having a predetermined clearance within the contact tip and guides the fed welding wire, and wherein the arc-welding torch is configured such that axes of the contact tip and the wire guide are relatively changed so as to cause the welding wire fed while guided by the wire guide to contact the power supply portion of the contact tip. The power supply portion of the contact tip is formed to have an axial length with which a welding current can be maintained at least a predetermined lower limit current despite a shift of a power supply point in accordance with wear of the power supply portion, more specifically, formed to have a length of 1 to 4 mm.

Abstract: A torsion beam type suspension including a torsion beam in which arms are formed by bending both ends of a pipe material and also includes wheel installation members fixed to the arms, respectively. Portions to be inserted of the wheel installation members are inserted into open ends of the arms, and the wheel installation members are welded to the arms. The torsion beam type suspension can be produced at low cost and have high quality.

Abstract: A welding torch includes: a contact tip having, on a distal-end inner circumferential surface thereof, a power supply portion that contacts a fed welding wire to supply current; and a wire guide that is provided having a predetermined clearance within the contact tip and guides the fed welding wire, and wherein the arc-welding torch is configured such that axes of the contact tip and the wire guide are relatively changed so as to cause the welding wire fed while guided by the wire guide to contact the power supply portion of the contact tip. The power supply portion of the contact tip is formed to have an axial length with which a welding current can be maintained at at least a predetermined lower limit current despite a shift of a power supply point in accordance with wear of the power supply portion, more specifically, formed to have a length of 1 to 4 mm.

Abstract: An injection molding machine comprises a stationary platen 46 and a movable platen 40. The stationary platen 46 and movable platen 40 may be supported on a base frame 10. A mold clamping frame 56 comprises a first member 54 joined to the stationary platen 46, a second member 24 joined to the movable platen 40, and connecting members 78 and 80 for connecting the first member 54 and the second member 24 at their approximate centers. A mold clamping cylinder 50 is disposed between the first member 54 and the stationary platen 46 or between the second member 24 and the movable platen 40. The stationary platen 46 and the first member 54 are joined in a flexible manner, and the movable platen 40 and the second member 24 are similarly joined in a flexible manner.

Abstract: A torsion beam type suspension including a torsion beam in which arms are formed by bending both ends of a pipe material and also includes wheel installation members fixed to the arms, respectively. Portions to be inserted of the wheel installation members are inserted into open ends of the arms, and the wheel installation members are welded to the arms. The torsion beam type suspension can be produced at low cost and have high quality.

Abstract: The present invention enables one hot runner device to be shared between a plurality of molds whose resin inlets are disposed at different positions. This hot runner device discharges supplied molten material to a resin inlet 18b of a mold 18. A hot runner body 42 comprises an inlet opening into which the molten material is supplied, an outlet opening from which the molten material is discharged, and a flow passage. The inlet opening is formed at one end, and the outlet opening is formed at the other end. The flow passage connects the inlet opening and the outlet opening. The hot runner body 42 is driven and moved by a drive mechanism 56 so that the outlet opening 52 can make contact with the resin inlet 18b of each of a plurality of molds whose resin inlets 18b are disposed at different positions. Accordingly, the hot runner device can be commonly used for the plurality of molds whose resin inlets are disposed at different positions.

Abstract: An injection molding machine comprises a stationary platen 46 and a movable platen 40. The stationary platen 46 and movable platen 40 may be supported on a base frame 10. A mold cramping frame 56 comprises a first member 54 joined to the stationary platen 46, a second member 24 joined to the movable platen 40, and connecting members 78 and 80 for connecting the first member 54 and the second member 24 at their approximate centers. A mold cramping cylinder 50 is disposed between the first member 54 and the stationary platen 46 or between the second member 24 and the movable platen 40. The stationary platen 46 and the first member 54 are joined in a flexible manner, and the movable platen 40 and the second member 24 are similarly joined in a flexible manner.

Abstract: The present invention enables one hot runner device to be shared between a plurality of molds whose resin inlets are disposed at different positions. This hot runner device discharges supplied molten material to a resin inlet 18b of a mold 18. A hot runner body 42 comprises an inlet opening into which the molten material is supplied, an outlet opening from which the molten material is discharged, and a flow passage. The inlet opening is formed at one end, and the outlet opening is formed at the other end. The flow passage connects the inlet opening and the outlet opening. The hot runner body 42 is driven and moved by a drive mechanism 56 so that the outlet opening 52 can make contact with the resin inlet 18b of each of a plurality of molds whose resin inlets 18b are disposed at different positions. Accordingly, the hot runner device can be commonly used for the plurality of molds whose resin inlets are disposed at different positions.

Abstract: An injection molding apparatus has a die having a fixed mold and a moveable mold disposed to face with each other. A frame structure is detachably provided on the outer surfaces of the fixed mold and the moveable mold, that is, opposite to the surface of the cavity defined by the fixed mold and the moveable mold. Each frame that constitutes the frame structure has a shape that can be combined together. One of frames provided on the fixed mold or the moveable mold is fixed thereto in a die clamping direction or a direction perpendicular thereto. The frame is fixed to the fixed mold of the die, leaving a predetermined gap in the direction perpendicular to that for fixing the frame structure to the die. The pressurizing mechanism that applies a pressing force in the direction other than for fixing the frame structure to the die. The hydraulic control mechanism is employed as the pressurizing mechanism.

Abstract: An injection molding apparatus has a die having a fixed mold and a moveable mold disposed to face with each other. A frame structure is detachably provided on the outer surfaces of the fixed mold and the moveable mold, that is, opposite to the surface of the cavity defined by the fixed mold and the moveable mold. Each frame that constitutes the frame structure has a shape that can be combined together. One of frames provided on the fixed mold or the moveable mold is fixed thereto in a die clamping direction or a direction perpendicular thereto. The frame is fixed to the fixed mold of the die, leaving a predetermined gap in the direction perpendicular to that for fixing the frame structure to the die. The pressurizing mechanism that applies a pressing force in the direction other than for fixing the frame structure to the die. The hydraulic control mechanism is employed as the pressurizing mechanism.