Matsushita Electric Industrial Co., Ltd.

Shinji Sasaguri

Teruaki Kasai

Kazuo Arikado

Tadahiko Sakai

Mitsuru Ozono

Norifumi Eguchi

Kenichi Takakura

In a seal mechanism which constitutes a port switching portion in a pump mechanism of a paste ejection apparatus that ejects paste, and which prevents leakage of the paste from a seal portion between a plunger block rotating with a plunger and a fixed seal block (between a seal surface and a sliding surface), a housing portion is formed by opposing an outer surface provided for the seal block to an inner surface extending axially from the cylinder block, and a ring-shaped external seal member formed by combination of an O-ring and self-lubricant material such as PTFE is attached into the housing portion. Hereby, it is possible to prevent the paste that has leaked from the seal portion from leaking to the outside of the housing portion by the external seal member.

Paste ejection apparatus

A conductive ball transferring apparatus including: an arranging member having in its top face a plurality of recesses in a predetermined arrangement pattern each capable of receiving one conductive ball therein; a tilting mechanism for tilting the arranging member with respect to a horizontal plane; a speed controller for controlling the moving speeds of the conductive balls that move along the top face of the tilted arranging member in a direction the arranging member has been tilted; and a transferring head for picking up the conductive balls arranged by the arranging member and transferring them onto predetermined positions. With this structure, the moving speeds of the conductive balls are stabilized and the conductive balls are arranged into the recesses quickly without fail, and thereby the transferring head can pick up these conductive balls onto predetermined positions promptly.

Apparatus and method of transferring conductive balls and apparatus and method of supplying conductive balls

In a mounting apparatus for mounting conductive ball where a conductive ball,is picked up by vacuum to a suction hole,formed in the bottom of a suction head,for mounting on a workpiece, a reference wave form that represents the amount of light detected at a light detector,when a suction head,is sucking a conductive ball,rightly in the normal state is compared with a wave form detected at the light detector,when actually mounting the conductive ball; also a reference wave form detected at the light detector,when there is no conductive ball,at all on the suction head,is compared with a wave form detected at the light detector,after mounting of the conductive ball is finished. Through the above described processing, errors in the light interruption that stem from a tilted suction head,and machining errors during processing of suction holes,are eliminated, and the existence, or non-existence, of the conductive ball,is detected at a high accuracy level.

Growing community of inventors

Fukuoka, Japan

Shinji Sasaguri