Matsushita Electric Industrial Co., Ltd.

Takao Naito

Ken Takahashi

Naoichi Chikahisa

Hiroaki Onishi

Akihiko Wachi

Kazuhiko Narikiyo

Yousuke Nagasawa

Tetsuya Tanaka

Nobuyasu Nagafuku

Seishiro Yanachi

Nobuyuki Kakishima

Shoji Sato

Akira Kabeshita

Kanji Hata

Takaaki Higashida

Takeshi Kuribayashi

Takashi Ando

Hiroyoshi Nishida

Shuuichi Kubota

Takashi Sasaki

Eigo Sarashina

Yoshinori Seki

Koji Mitsushiro

Susumu Takaiti

Takashi Mori

Toshiaki Yamauchi

Kazumi Ishimoto

Kurayasu Hamasaki

Yutaka Matsuda

Yoshinobu Maeda

Syoji Sato

Hiroyuki Miyake

Masuo Masui

Yuzo Nishimori

Kazue Okanoue

Yoshihisa Tachiyama

Shuuji Hosokawa

Kohji Fujiwara

A transfer rackloaded with a seriate number of component supply cassettesto be handled collectively is carried and retained on a truckso that it can be taken in and out of the truck. The transfer rackis passed between the truckand a component supply section. Thus, the withdrawal of the transfer rackfrom the component supply sectionto the truckand the delivery of the transfer rackto the component supply sectionare executed in a timely manner so as to change the component supply cassettesat the component supply section 8. The transfer rackdelivered to the component supply sectionis positioned by operating an automatic positioning means at the component supply sectionin a direction in which it is loaded and unloaded and in a direction perpendicular to the direction in which it is loaded and unloaded.

Method and apparatus for collectively changing components at component supply section

A filling squeegee and a scraping squeegee are provided in a printing apparatus. The filling squeegee is moved without contacting a surface of a mask in order to fill a solder paste into openings of the mask. Unnecessary solder paste on the surface of the mask is scraped by the scraping squeegee. The solder paste is prevented from being improperly filled in or scraped from the openings even if a speed of the squeegee is increased, so that the solder paste can be printed stably on circuit board.

Apparatus and method for printing solder paste

A screen printing method and apparatus for printing a circuit pattern corresponding to that of a stencil ( ), onto a print-object article ( ) placed on an ascendable/descendable positioning stage ( ), through moving a squeegee ( ) horizontally while the squeegee is pushed in on the stencil so that print paste ( ) 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 ( ) 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. Upon an occurrence of print standby time during a printing operation, the print standby time is measured, and at a resumption of printing with the print standby canceled, the paste placed on the stencil during the standby time is screen-printed, by moving the squeegee at an adjusted print speed lower than the reference print speed based on a relationship between the print standby time and a print time due to the adjusted print speed after the resumption of printing.

Screen printing method and screen printing apparatus

A transfer rack loaded with a seriate number of component supply cassettes to be handled collectively is carried and retained on a truck so that it can be taken in and out of the truck The transfer rack is passed between the truck and a component supply section Thus, the withdrawal of the transfer rack from the component supply section to the truck and the delivery of the transfer rack to the component supply section are executed in a timely manner so as to change the component supply cassettes at the component supply section The transfer rack delivered to the component supply section is positioned by operating an automatic positioning means at the component supply section in a direction in which it is loaded and unloaded and in a direction perpendicular to the direction in which it is loaded and unloaded.

A screen printing method and apparatus for printing a circuit pattern corresponding to that of a stencil (,), onto a print-object article (,) placed on an ascendable/descendable positioning stage (,), through moving a squeegee (,) horizontally while the squeegee is pushed in on the stencil so that print paste (,) 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 (,) 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. Upon an occurrence of print standby time during a printing operation, the print standby time is measured, and at a resumption of printing with the print standby canceled, the paste placed on the stencil during the standby time is screen-printed, by moving the squeegee at an adjusted print speed lower than the reference print speed based on a relationship between the print standby time and a print time due to the adjusted print speed after the resumption of printing.

In a printing device in which a printing material is printed on or applied to a to-be-printed surface of a circuit board through a screen mask for printing having openings formed therein in a predetermined pattern, it is intended to reliably remove cream solder remaining in the openings in the screen mask. After an air suction mechanism (,) has its flow rate controlled by a flow rate controller (,). An air suction section (,) is lifted until its front end contacts with the screen mask (,), the air suction mechanism (,) starts cleaning by sucking air from the openings (,) in the screen mask (,). An inspecting camera (,) is used to observe the cream solder (,) remaining in the openings (,) after cleaning, and the air suction flow rate is controlled according to the results thereof to effect cleaning again.

Cleaning apparatus and cleaning method

Screen printing apparatus and screen printing method

A printing method and a printing device are provided, whereby a uniform amount of solder can be coated, printing quality can be improved, variations in adjustment between operators are eliminated, adjustment time is shortened, and productivity can be improved. By keeping the amount of deformation of the end sections of a squeegee constant by maintaining a uniform state of contact between the squeegee and a stencil, there is no occurrence of such problems as unsatisfactory wiping away of a solder paste, which causes the solder paste to be left on the stencil, incomplete filling of the solder paste into the pattern opening, or an increase in the deformation of the end sections of the squeegee, causing solder paste filled into the pattern opening to be scraped away.

Printing method and printing device

Screen printing method and apparatus therefor

A main wiping portion which contacts the back of a mask through a cleaning paper is provided behind a suction port as viewed in the direction of movement of an air suction portion. The cleaning paper is able to wipe off both solder paste adhered on the back of the mask and solder paste discharged from openings of the mask by suction through the suction port, whereby the solder paste deposits on the mask can be cleaned off at high removal efficiency.

Printing mask cleaning apparatus and method

Method for forming fiducial mark in resin stencil and stencil formed

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. The carry-in conveyor surface is positioned within the same plane as an object placing surface of the positioning stage. A carry-out conveyor is provided for transferring the object on the positioning stage along the transferring direction, the carry-out conveyor being arranged away from the positioning stage and having a carry-out conveyor surface on which the object is placed after the object is fed from the positioning stage. The carry-out conveyor surface is positioned within the same plane as the object placing surface of the positioning stage.

Apparatus and method for centering a printing screen over an object

A component supply apparatus for sequentially supplying components to a predetermined position by separating a covering tape from an accommodating tape. The components are accommodated in the accommodating tape at predetermined intervals along a longitudinal direction of the tape. The components are covered with the covering tape. The apparatus includes a reel around which the separated covering tape is wound. The reel includes a reel body having a winding barrel removably mounted on a driving shaft and a guide flange positioned at one end of the driving shaft and a guide flange positioned at one end of the driving shaft. An inelastic auxiliary ring is provided so as to wind the covering tape about the peripheral surface thereof. The ring includes a rotation preventing portion and is removably mounted on a peripheral surface of the winding barrel.

Component supply apparatus

Growing community of inventors

Nakakoma-gun, Japan

Takao Naito