COMPONENT HOLDING HEAD OF SURFACE MOUNTING MACHINE

• Main Authors: FUJIWARA TETSUO, TANIZAKI MASAHIRO, KITADA SUSUMU
• Format: Patent
• Language: English; Japanese
• Published: 09.05.2016
• Subjects: CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS

PROBLEM TO BE SOLVED: To improve detection accuracy of a sensor for detecting a component holder (nozzle) in a component holding head of a surface mounting machine.SOLUTION: A component holding head of a surface mounting machine includes a plurality of spindles arranged along a circumferential direction of a rotary head 40 that is attached to a head body so as to be rotatable in an R direction around a vertical axis of the head body, and a component holder 42 attached to a lower end of each of the spindles. The component holding head includes an optical sensor 30 of a reflection type that detects the component holder 42a that reaches a predetermined position by rotating in the R direction. The optical sensor 30 includes a light emission part that emits light toward a reflection surface 42b in an outer periphery of the component holder 42a, and a light receiving part that receives light reflected on the reflection surface 42b, the parts being arranged on the same axis. The optical sensor 30 is also arranged so that an optical axis of light emitted from the light emission part is displaced from a position of the reflection surface 42b on a vertical center axis of the component holder 42a to point to a position of the reflection surface 42b on a downstream side in a rotation direction in the R direction.SELECTED DRAWING: Figure 7 【課題】表面実装機の部品保持ヘッドにおいて、部品保持具（ノズル）を検知するセンサの検知精度を向上させること。【解決手段】ヘッド本体に対して鉛直軸周りのＲ方向に回転可能に取り付けられたロータリーヘッド４０の円周方向に沿って複数本のスピンドルが配置され、各スピンドルの下端に部品保持具４２が装着された表面実装機の部品保持ヘッドにおいて、前記Ｒ方向に回転して特定位置に到来した部品保持具４２ａを検知する反射型の光センサ３０を設けた。光センサ３０は、部品保持具４２ａの外周の反射面４２ｂに向けて光を発する発光部と、反射面４２ｂで反射された反射光を受ける受光部とを同一軸線上に有し、かつ、前記発光部から発せられる光の光軸が、部品保持具４２ａの鉛直方向中心軸上の反射面４２ｂの位置より、前記Ｒ方向の回転方向の下流側の反射面４２ｂの位置を指向するようにオフセットして配置した。【選択図】図７