摘要:
An apparatus for cleaning a screen of a screen printing machine, including an ultrasonic vibrator which vibrates at an ultrasonic frequency, a cleaning-sheet supporting device which supports a portion or an entirety of a porous cleaning sheet between the screen and the vibrator, such that the portion or entirety of the cleaning sheet is contactable with the screen and the vibrator, and a washing-agent supplying device which supplies a washing agent to the cleaning sheet. An apparatus for cleaning a contact surface of a screen of a screen printing machine, the contact surface contacting a substrate when the screen is used to effect a screen printing on the substrate, the apparatus including a feeding device which supports a wiping sheet in a form of a web having a constant width, such that a portion of the web is contactable with the contact surface of the screen, and which feeds the web in a longitudinal direction thereof, a pressing device which presses the portion of the web against a portion of the contact surface of the screen, and a moving device which moves one or both of the screen and a unit including the pressing device, relative to each other, in a direction parallel to the contact surface of the screen.
摘要:
An apparatus for cleaning a screen of a screen printing machine, including an ultrasonic vibrator which vibrates at an ultrasonic frequency, a cleaning-sheet supporting device which supports a portion or an entirety of a porous cleaning sheet between the screen and the vibrator, such that the portion or entirety of the cleaning sheet is contactable with the screen and the vibrator, and a washing-agent supplying device which supplies a washing agent to the cleaning sheet. An apparatus for cleaning a contact surface of a screen of a screen printing machine, the contact surface contacting a substrate when the screen is used to effect a screen printing on the substrate, the apparatus including a feeding device which supports a wiping sheet in a form of a web having a constant width, such that a portion of the web is contactable with the contact surface of the screen, and which feeds the web in a longitudinal direction thereof, a pressing device which presses the portion of the web against a portion of the contact surface of the screen, and a moving device which moves one or both of the screen and a unit including the pressing device, relative to each other, in a direction parallel to the contact surface of the screen.
摘要:
A creamed-solder printing machine for printing a creamed solder on a printed circuit board, including a screen having a plurality of holes, a squeegee which prints the creamed solder on the printed circuit board through the holes of the screen, a frame which supports the squeegee such that the squeegee is movable toward, and away from, the screen, and an elastic member which is provided between the frame and the squeegee and which produces a biasing force to bias the squeegee in a direction toward the screen.
摘要:
An apparatus for printing a printing material on a substrate, such as a printed circuit board includes: a squeegee which extends in a first direction parallel to a plane screen and which slides on the screen to squeeze the printing material into through-holes of the screen; and an outlet-defining member which is opposed to the squeegee and which cooperates with the squeegee to define an elongate printing-material outlet. A printing-material container has a printing-material chamber which extends parallel to the printing-material outlet, has a length substantially equal to a length of the outlet and communicates with the outlet over a substantially entire length thereof. A printing-material thrust member is provided in the printing-material chamber such that the printing-material thrust member is substantially fluid-tightly movable relative to the printing-material container. A container moving device moves the printing-material container relative to the screen in a second direction parallel to the screen and perpendicular to the first direction.
摘要:
A method of method of controlling a pushing pressure which is applied to a printing material, such as a creamed solder, to push the material out of a printing head of a screen printing apparatus and print the material on an object, such as a printed wiring board, through at least one through-hole of a screen of the apparatus while at least one of the head and the screen is moved relative to the other of the head and the screen in a direction parallel to the screen, the method comprising the step of changing the pushing pressure applied to the printing material, while a printing operation is carried out on the object by the screen printing apparatus.
摘要:
An apparatus for inspecting a screen of a screen printing machine, including the steps of taking, with an image taking device, an image of at least one opening of the screen, and judging, based on image data representing the taken image, whether the opening of the screen is clogged.
摘要:
An electric-component transferring apparatus including a plurality of component holders each of which holds an electric component, and having the function of exchanging the component holders, the apparatus including a holder chuck which holds each of the component holders such that each component holder is removable therefrom; a chuck moving device which moves the holder chuck to transfer the electric component held by each component holder held by the holder chuck; a holder holding member which holds the component holders such that each of the component holders is allowed to be removed therefrom; a holding-member holding device which holds the holder holding member such that the holder holding member is removable therefrom; and a holder-exchange moving device which moves at least one of the holder chuck and the holder holding member relative to each other so that the holder chuck exchanges one of the component holders that is held thereby, with another of the component holders that is held by the holder holding member.
摘要:
A screen apparatus including a screen plate including a screen and a screen frame to which the screen is fixed, a support table having a support surface which supports the screen frame, an adjusting device which adjusts a position of the screen plate relative to the support table in a direction parallel to the screen, a fixing device which, when the adjusting device adjusts the position of the screen plate, permits the screen plate to be moved relative to the support table and, after the adjustment, presses the screen frame against the support surface of the support table, thereby fixing the screen plate to the support table, at least three balls which are supported by the screen frame and/or the frame-support table such that each of the balls is movable between its advanced position and its retracted position, at least three biasing devices each of which supports a corresponding one of the balls such that the one ball is rollable and which biases the one ball toward its advanced position, and at least three advanced-position defining devices which define the respective advanced positions of the balls where the balls cooperate with each other to position the screen frame at a position apart from the support surface of the support table.
摘要:
A chuck for holding an object, including one or more linear motors which include one or more linear stators, two or more moving members which are movable along the linear stator or stators, independent of each other, and one or more guide members which guide each of the two or more moving members along the linear stator or stators, and two or more holding members which are supported by the two or more moving members, respectively, and which cooperate with each other to hold the object.
摘要:
A printed-board conveying apparatus includes a first belt conveyor and a second belt conveyor. The first belt conveyor includes first stationary and movable guide rails and two first belts. The second belt conveyor is arranged in parallel with the first belt conveyor and includes second stationary and movable guide rails and two second belts. The belts are circulated while being guided by the guide rails. The belts support opposite end positions of a printed board, respectively, and cooperate with each other to convey the printed board.