Abstract: In printing of a bonding material in which a board is supported from a component mounting-side surface on which a plurality of components are mounted, and a bonding material is printed on a working-side surface which is a surface opposed to the component mounting-side surface of the board, an edge portion region of the board supported by a board transporting unit is included in a support region of the board during the printing so as to enlarge the support region of the board having the components mounted thereon in high density and to achieve reliable and high precision printing of the bonding material.

Abstract: A printing screen cleaning apparatus and a method for cleaning a printing screen by employing the cleaning apparatus which includes a cleaning head having a wiping member and a backup member for sucking the paste via a wiping member while sliding the wiping member on a lower surface of the printing screen. The backup member includes a suction port provided in a suction region of a backup surface of the backup member. The backup member also has a groove that extends parallel to the suction region and approximately perpendicular to the sliding direction of the wiping member. The groove partially releases the backup of the wiping member.

Abstract: In printing of a bonding material in which a board is supported from a component mounting-side surface on which a plurality of components are mounted, and a bonding material is printed on a working-side surface which is a surface opposed to the component mounting-side surface of the board, an edge portion region of the board supported by a board transporting unit is included in a support region of the board during the printing so as to enlarge the support region of the board having the components mounted thereon in high density and to achieve reliable and high precision printing of the bonding material.

Abstract: When solder paste passes through a first gap located between a pressurizing member and a printing mask during solder paste printing, a pressure directed toward the printing mask is applied from the pressurizing member to the solder paste.

Abstract: When solder paste passes through a first gap located between a pressurizing member and a printing mask during solder paste printing, a pressure directed toward the printing mask is applied from the pressurizing member to the solder paste.

Abstract: An applicator has a rubber heater (51) attached to the outer peripheral surface of the application member (4) in the vicinity of a nozzle (3). Thereby, the temperature in the vicinity of the nozzle (3) is controlled by a control unit by detecting the temperature using a thermal resistor (52). A change in the viscosity of the viscous material (2) is prevented by keeping the temperature substantially constant, so that the volume of the viscous material from the nozzle (3) is stabilized.

Abstract: When solder paste passes through a first gap (34) located between a pressurizing member (28) and a printing mask (3) during solder paste printing, a pressure directed toward the printing mask is applied from the pressurizing member to the solder paste.

Abstract: When solder paste passes through a first gap (34) located between a pressurizing member (28) and a printing mask (3) during solder paste printing, a pressure directed toward the printing mask is applied from the pressurizing member to the solder paste.

Abstract: A screen printing method and apparatus for printing a circuit pattern corresponding to that of a stencil (4), onto a print-object article (1) placed on an ascendable/descendable positioning stage (2), through moving a squeegee (5a, 5b) horizontally while the squeegee is pushed in on the stencil so that print paste (9) is printed to the article via the stencil. The squeegee is lifted to an extent of a push-in stroke, to which the squeegee has been pushed in on the stencil, and thereafter the article is separated away from the stencil by moving the stage downward. The board is classified into first and second areas (121, 120) where values of opening sizes of the stencil along a squeegee moving direction are smaller than and not smaller than a threshold, and a speed of the squeegee at the first area is made slower than that at the second area.

Abstract: A screen printing method and apparatus for printing a circuit pattern corresponding to that of a stencil (4), onto a print-object article (1) placed on an ascendable/descendable positioning stage (2), through moving a squeegee (5a, 5b) horizontally while the squeegee is pushed in on the stencil so that print paste (9) is printed to the article via the stencil. The squeegee is lifted to an extent of a push-in stroke, to which the squeegee has been pushed in on the stencil, and thereafter the article is separated away from the stencil by moving the stage downward. The board is classified into first and second areas (121, 120) where values of opening sizes of the stencil along a squeegee moving direction are smaller than and not smaller than a threshold, and a speed of the squeegee at the first area is made slower than that at the second area.

Abstract: The object of the present invention is to provide an apparatus and a method for applying a viscous fluid whereby a constant application diameter is achieved through a simple operation without a Tact loss while a surface of a member to be applied can be less damaged. An adhesive application member (2111) having a screw portion (2122) inserted therein is rotated by a rotating device (230), so that a nozzle stopper (2114) of the adhesive application member is prevented from interfering with a wiring pattern on a face of a circuit board. Moreover, the screw portion is rotated synchronously as well when the adhesive application member is rotated, thereby preventing the adhesive from being discharged out from the nozzle in consequence to the rotation of the adhesive application member. An application diameter can hence be uniformed.

Abstract: A screen printing method and apparatus for printing a circuit pattern corresponding to that of a stencil (4), onto a print-object article (1) placed on an ascendable/descendable positioning stage (2), through moving a squeegee (5a, 5b) horizontally while the squeegee is pushed in on the stencil so that print paste (9) is printed to the article via the stencil. The squeegee is lifted to an extent of a push-in stroke, to which the squeegee has been pushed in on the stencil, and thereafter the article is separated away from the stencil by moving the stage downward. The board is classified into first and second areas (121, 120) where values of opening sizes of the stencil along a squeegee moving direction are smaller than and not smaller than a threshold, and a speed of the squeegee at the first area is made slower than that at the second area.

Abstract: An applicator has a rubber heater (51) attached to the outer peripheral surface of the application member (4) in the vicinity of a nozzle (3). Thereby, the temperature in the vicinity of the nozzle (3) is controlled by a control unit by detecting the temperature using a thermal resistor (52). A change in the viscosity of the viscous material (2) is prevented by keeping the temperature substantially constant, so that the volume of the viscous material from the nozzle (3) is stabilized.

Abstract: A screen printing method and apparatus for printing a circuit pattern corresponding to that of a stencil (4), onto a print-object article (1) placed on an ascendable/descendable positioning stage (2), through moving a squeegee (5a, 5b) horizontally while the squeegee is pushed in on the stencil so that print paste (9) is printed to the article via the stencil. The squeegee is lifted to an extent of a push-in stroke, to which the squeegee has been pushed in on the stencil, and thereafter the article is separated away from the stencil by moving the stage downward. The board is classified into first and second areas (121, 120) where values of opening sizes of the stencil along a squeegee moving direction are smaller than and not smaller than a threshold, and a speed of the squeegee at the first area is made slower than that at the second area.

Abstract: A screen printing method and apparatus for printing a circuit pattern corresponding to that of a stencil (4), onto a print-object article (1) placed on an ascendable/descendable positioning stage (2), through moving a squeegee (5a,5b) horizontally while the squeegee is pushed in on the stencil so that print paste (9) is printed to the article via the stencil. The squeegee is lifted to an extent of a push-in stroke, to which the squeegee has been pushed in on the stencil, and thereafter the article is separated away from the stencil by moving the stage downward. The board is classified into first and second areas (121,120) where values of opening sizes of the stencil along a squeegee moving direction are smaller than and not smaller than a threshold, and a speed of the squeegee at the first area is made slower than that at the second area.

Abstract: A reflow soldering device extracts a vaporized component of a contaminative material, such as flux, from exhaust gas from a reflow furnace. The device includes a conveyor for transferring a circuit substrate, a heater for heating the transferred circuit substrate, a cooler for cooling the circuit substrate which has been reflow soldered by heater, discharge pipes and a discharge blower for discharging an exhaust gas at high temperature from the heater to the outside of the device, and a flux remover mounted in the discharge pipes which cools the exhaust gas to 70.degree. C. and below, preferably 60.degree. C. and below, so as to cause a vaporized component, such as flux contained in the exhaust gas, to become liquid or solid and to be removed.

Abstract: A screen printing apparatus includes: a positioning stage for positioning an object and a plate arranged above it; printing squeegees which are moved horizontally on the plate for printing through the plate onto the object; a driver for moving the positioning stage; a horizontal driver for moving the positioning stage in two substantially perpendicular directions; a positioning controller for calculating a central position of a pattern on the plate from a reference position and the size of an outer periphery of the object, moving the positioning stage so that the central position corresponds to a center of the object. A carry-in conveyor is provided for feeding the object onto the positioning stage along a predetermined transferring direction, the conveyor being arranged away from the positioning stage and having a carry-in conveyor surface on which the object is placed before the object is fed onto the positioning stage.

Abstract: A screen printing apparatus for printing a printing paste to a to-be-printed object, includes a positioning stage for positioning and fixing the to-be-printed object, a screen printing plate disposed above the positioning stage, a printing squeegee moved in a predetermined moving direction within a horizontal plane while keeping touch with the screen printing plate to thereby print the printing paste on the screen printing plate to the to-be-printed object, a circuit pattern provided on the screen printing plate and inclined at an angle to the moving direction of the printing squeegee, a lift device for relatively moving the positioning stage up and down to a predetermined printing position in a vicinity of a lower face of the screen printing plate, a rotating device for rotating the positioning stage about a longitudinal axis orthogonal to a face of the positioning stage, and a controlling device for controlling and rotating the positioning stage by means of the rotating device so that an inclining angle of

Abstract: A screen printing machine in which a squeegee is driven to form a film of solder on a board through a screen, includes an automatic squeegeeing angle setter which includes a squeegeeing angle adjuster for adjusting a squeegeeing angle of the squeegee and a squeegeeing angle detector for detecting the angle thereof to set the squeegeeing angle of the squeegee by the squeegeeing angle adjuster based on a detection of the squeegeeing angle detector, an automatic pressing amount setter which includes a squeegee pressing amount adjuster for adjusting a squeegee pressing amount caused by the squeegee and a squeegee pressing force detector for detecting a squeegee pressing force to set the pressing amount in consideration of a change in height resulting from a change of the angle of the squeegee by the squeegee pressing amount adjuster based on a detection of the squeegee pressing force detector, and an automatic balancing amount setter which includes a pressing amount balance adjuster for adjusting a balance of the