摘要:
A bonding apparatus 10 including an X and Y motor parts 20 and 50, which have substantially the same construction, and a moving table 60, which can be moved in the XY plane by these motor parts. The X motor part 20 and Y motor part 50 are connected to the moving table 60 by joint mechanisms 42 and 52 that are rotatable. In the X and Y motor parts 20 and 50, the movable coils 30 of the movable elements 24 are shaft-supported by shaft-supporting mechanisms 36 so that these coils are rotatable about the Z axis, and the shaft-supporting mechanisms 36 are guided so as to be movable linearly in the X and Y axial directions respectively by a guide mechanism formed with guide rails 38 and linear guides 37.
摘要:
A hydrostatic guide system including a guide table, a transfer table, a floating amount sensor attached to the transfer table, and a control unit. The transfer table has an inner portion, in which a magnetic attraction unit including a yoke and an electromagnet is embedded, and an outer shell portion, which covers the side surface and the upper surface of the inner portion. After the inner portion houses the yoke and the electromagnet, a gap around the yoke and the electromagnet is filled with a material having appropriate strength, so that the inner portion is integrated with the outer shell portion, and the transfer surface is flattened as whole. A surrounding groove is provided around the transfer table, and pressurized fluid supplied into the groove is jetted out to the guide table.
摘要:
The present invention is intended to provide a process for producing an electrolyte membrane-bonded electrode having excellent power generation property when constitutes an electrode assembly, and a varnish composition for an electrolyte, by the use of which an electrolyte membrane-electrode bonded structure capable of retaining excellent power generation property is obtained. A process for producing a first electrolyte membrane-bonded electrode comprises applying, onto an electrode, a water-containing dispersion containing a perfluorosulfonic acid polymer, an organic solvent A and water and having a perfluorosulfonic acid polymer content of 0.5 to 20% by weight and then applying, onto the resulting film, a solution of sulfonated polyarylene in an organic solvent B, to form an electrolyte membrane. A process for producing a second electrolyte membrane-bonded electrode comprises applying, onto an electrode, a solution or dispersion containing a proton-conductive polymer, an organic solvent B and water and having a water content of 25 to 50% by weight and then applying, onto the resulting film, a solution or dispersion containing a proton-conductive polymer, an organic solvent B and water and having a water content of less than 25% by weight, to form an electrolyte membrane. A process for producing a third electrolyte membrane-bonded electrode comprises applying, onto an electrode, a varnish composition 6 obtained by dissolving a sulfonated polymer in a solvent containing an organic solvent C, an organic solvent D and water to form an electrolyte membrane, said organic solvent C being a good solvent for the sulfonated polymer and having a higher boiling point than that of other solvent components, said organic solvent D having a boiling point of not lower than 50° C. and being not a good solvent for the sulfonated polymer when used alone but causing a solubility region of the sulfonated polymer to appear when mixed with the organic solvent C and/or the water. The varnish composition 6 of the invention is a varnish composition obtained by dissolving the sulfonated polymer in a solvent containing an organic solvent C, an organic solvent D and water.
摘要:
A bonding apparatus including, on a supporting stand 12, two linear motors 130 and 140 and a bonding head supporting stage 114 which supports the bonding head 120 by means of fluid pressure so that the bonding head 120 is movable in the horizontal plane. The linear motors 130 and 140 respectively include driving sections 132 and 142 and movable coil assemblies 134 and 144. An arm 136 extending from the movable coil assembly 134 of the first linear motor 130 is fastened to the bonding head 120, and an arm 146 extending from the movable coil assembly 144 of the second linear motor 140 is engaged with the bonding head 120. A driving force aimed at the center of gravity of the bonding head 120 is applied to the bonding head 120 via the arms 136 and 146, so that the bonding head 120 is moved.
摘要:
A bonding apparatus including a front link whose lower end is rotatably connected to a bonding arm and upper portion is rotatably connected to bonding head, and a rear link whose lower end is rotatably connected to the rear end of the bonding arm and upper portion is rotatably connected to the bonding head; and a hypothetical rotational center of capillary of the bonding arm is on a bonding surface and set to be the intersection of a line that connects upper and lower rotational centers of the front link and a line that connects upper and lower rotational centers of the rear link, wherein the immovable element of motor is fastened to the bonding head, and the rotational element of the motor is attached to the upper end of the rear link so that the rotational element rotates about the upper rotational center of the rear link.
摘要:
In a polymer electrolyte fuel cell in which a cathode diffusion layer, a cathode electrode catalyst layer, a polymer electrolyte membrane, an anode electrode catalyst layer, and an anode diffusion layer are laminated in this order, electron conductivity of the cathode electrode catalyst layer at a portion on the side of the cathode diffusion layer is higher than at a portion on the side of the polymer electrolyte membrane and electron conductivity of the cathode electrode catalyst layer at the portion on the side of the polymer electrolyte membrane is lower than at the portion on the side of the cathode diffusion layer, and furthermore, electron conductivity of the anode electrode catalyst layer at a portion on the side of the anode diffusion layer is higher than at a portion on the side of the polymer electrolyte membrane and electron conductivity of the anode electrode catalyst layer at the portion on the side of the polymer electrolyte membrane is lower than at the portion on the side of the anode diffusion layer.
摘要:
An ultrasonic horn used in, for instance, a wire bonding apparatus and formed with mounting flanges, including a slit and a cross-sectional shape varying portion; the slit being on the central axis in the horn's longitudinal direction and extending fore and aft relative to the center of the mounting flanges, the length of the slit(s) being equal to or greater than the width direction of a flange region that is between the opposing flanges, and at least a part of the cross-sectional shape varying portion being on the outer surface of the horn at a slit region in which the slit is formed. The stress center point in the cross-section of the ultrasonic horn at the flange region is positioned more to the inside than a straight line joining the stress center points in the cross-sections of the ultrasonic horn at the front and rear end portions of the slit.
摘要:
An ultrasonic horn used in, for instance, a wire bonding apparatus and formed with mounting flanges, including a slit and a cross-sectional shape varying portion; the slit being on the central axis in the horn's longitudinal direction and extending fore and aft relative to the center of the mounting flanges, the length of the slit(s) being equal to or greater than the width direction of a flange region that is between the opposing flanges, and at least a part of the cross-sectional shape varying portion being on the outer surface of the horn at a slit region in which the slit is formed. The stress center point in the cross-section of the ultrasonic horn at the flange region is positioned more to the inside than a straight line joining the stress center points in the cross-sections of the ultrasonic horn at the front and rear end portions of the slit.
摘要:
A bonding apparatus includes: a reference plane; a bonding arm configured to be rotated about a rotation center that is arranged separately from the reference plane and to move a capillary attached at a tip end thereof obliquely toward and away from the reference plane; and an imaging device for optically detecting bonding positions on a semiconductor chip and/or a lead frame, in which an angle between an optical axis being heading for the imaging device from the reference plane and the reference plane is approximately equal to an angle between a motion trajectory of a tip end of the capillary and the reference plane, and thereby the bonding apparatus can have a wide bonding area with a simple mechanism as well as perform high-speed and high-accuracy bonding.
摘要:
An ultrasonic horn used in, for instance, a wire bonding apparatus and formed with mounting flanges, including a slit and a cross-sectional shape varying portion; the slit being on the central axis in the horn's longitudinal direction and extending fore and aft relative to the center of the mounting flanges, the length of the slit(s) being equal to or greater than the width direction of a flange region that is between the opposing flanges, and at least a part of the cross-sectional shape varying portion being on the outer surface of the horn at a slit region in which the slit is formed. The stress center point in the cross-section of the ultrasonic horn at the flange region is positioned more to the inside than a straight line joining the stress center points in the cross-sections of the ultrasonic horn at the front and rear end portions of the slit.