Abstract: In order to horizontally position a chip part held by a holding unit by a closing operation caused by relative movement of at least two parts of opposing positioning pawls, a setting unit sets information concerning an interval between opposing positioning pawls of each of the two pairs and information of a size of the chip part, a memory unit stores the information set by the setting unit, a calculating unit calculates a distance for increasing a relative moving speed of the positioning pawls at the start of the closing operation and a distance for reducing the relative moving speed at the end of the closing operation on the basis of the information stored in the memory unit, and a control unit controls a driving source for driving the positioning pawls on the basis of the calculation result of the calculating unit, thereby variably controlling the moving speed at the high-speed moving distance of the positioning pawls in accordance with the size of the chip part to reduce a moving time of the positioning pa

Abstract: The present invention discloses a screen printing machine having a position adjusting means for carrying out adjustment of position of a material to be printed having a plurality of alignment marks in a direction of X, Y and .theta.. The adjusting means comprises a placing means for placing and positioning the material to be printed, a means for displacing the placing means in a direction of X and moving and carrying the placing means from a recognition station to a printing station, and a means for displacing the placing means in a directin of Y. The displacing means is composed of a mechanism in which both side portions of the placing means are respectively independently displaced in the direction of Y to make adjustment of positions of the placing means in the directions of Y and .theta..

Abstract: A method for the temperature balancing control of a plurality of heat exchangers wherein, in case of operating the heat exchangers connected in parallel, the temperatures of a medium to-be-heated on the outlet sides of the respective heat exchangers are balanced. According to the method, the temperatures of the same positions of the heat exchangers except for the inlets thereof for the medium to-be-heated are sensed, the respective sensed values are compared with a temperature setting value so as to calculate control signals, all the control signals are subsequently revised so that the maximum value among the control signals may agree with a preset control reference value, and temperature regulation means disposed for the respective heat exchangers are controlled on the basis of the revised control signals.

Abstract: This invention relates to an air separation method and apparatus for liquefying and separating feed air into oxygen and nitrogen by use of a single rectification column. The temperature of the feed air, which is liquefied, is reduced to the temperature necessary for the condensation and liquefaction of pure vaporous nitrogen inside the single rectification column and is used to condense and liquefy the pure vaporous nitrogen and vaporize the feed air. After the pressure of the feed air thus vaporized is raised to the pressure necessary for the condensation and liquefaction of the pure vaporous nitrogen inside the single rectification column, the vaporized feed air is introduced into the single rectification column so that pure gaseous nitrogen can be withdrawn from the top of the single rectification column, pure gaseous oxygen from a lower portion of the column and waste gas rich in nitrogen from an intermediate portion of the column.

Abstract: A shaped article composed of a substrate of an EVA copolymer and a coating of a paint containing an NCO-free radical bonded firmly to the substrate, said substrate being either(A) a shaped article of EVA copolymer having a vinyl acetate content of about 3 to about 35% by weight, the article having a coating on its surface formed from a solution of a resin selected from specified resins (a.sub.1), (a.sub.2), (a.sub.3) and (a.sub.4),(B) a shaped article of a blend of EVA copolymer having the vinyl acetate content as defined above with a resin selected from specified resins (b.sub.1), (b.sub.2), (b.sub.3) and (b.sub.4),(B') a shaped article of a graft copolymer of EVA having the vinyl acetate content as defined above, and grafted thereto, at least one specified monomer, or(B") a shaped article resulting from the saponification of the surface of a shaped article of EVA copolymer having the vinyl acetate content as defined above.