JPS61109647U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の流体制御回路図、第２図は本
考案の一実施例として示す自動ねじ締め機の要部
断面正面図、第３図は動作状態を示す第１図と同
様の流体制御回路図、第４図は第３図に示した状
態の自動ねじ締め機の動作状態を示す第２図と同
様の正面図である。 １はブラケツト、２はベース、３，４は支持ブ
ロツク、５はガイド軸、６は連結板、１０はキヤ
ツチヤユニツト、１１はノーズ、１２はジヨー、
１３はスライドスリーブ、２０はドライバユニツ
ト、２１はガイド部材、２１ａはドグ、２２はリ
ミツトスイツチ、２３はドライバビツト、２４は
ガイドスリーブ、３１は第１ピストンシリンダ、
３１ａはピストンロツド、３２は第２ピストンシ
リンダ、３２ａはピストンロツド、３３は圧流体
源、３４は第１方向制御弁、３５，３６，３７，
３８，３９はパイプ、４０は第２方向制御弁、４
１は背圧検出素子、４２は切換弁、４３，４４は
絞り付き逆止め弁、５０はねじ、５１はワーク。 Fig. 1 is a fluid control circuit diagram of the present invention, Fig. 2 is a sectional front view of main parts of an automatic screw tightening machine shown as an embodiment of the present invention, and Fig. 3 is a fluid control circuit diagram similar to Fig. 1 showing the operating state. The control circuit diagram, FIG. 4, is a front view similar to FIG. 2, showing the operating state of the automatic screw tightening machine in the state shown in FIG. 3. 1 is a bracket, 2 is a base, 3 and 4 are support blocks, 5 is a guide shaft, 6 is a connecting plate, 10 is a catch unit, 11 is a nose, 12 is a jaw,
13 is a slide sleeve, 20 is a driver unit, 21 is a guide member, 21a is a dog, 22 is a limit switch, 23 is a driver bit, 24 is a guide sleeve, 31 is a first piston cylinder,
31a is a piston rod, 32 is a second piston cylinder, 32a is a piston rod, 33 is a pressure fluid source, 34 is a first directional control valve, 35, 36, 37,
38, 39 are pipes, 40 is a second directional control valve, 4
1 is a back pressure detection element, 42 is a switching valve, 43 and 44 are check valves with throttles, 50 is a screw, and 51 is a workpiece.

Claims (1)

【実用新案登録請求の範囲】 １ フアスナ部品を１個づつ保持するキヤツチヤ
ユニツト１０を前後に往復動可能な第１ピストン
シリンダ３１に固定し、このキヤツチヤユニツト
１０に対して相対移動可能なドライバユニツト２
０を移動させる第２ピストンシリンダ３２を前記
第１ピストンシリンダ３１と一体移動可能に取り
付けたフアスナ部品締結機において、 圧流体源３３に第１方向制御弁３４を接続し、
この第１方向制御弁３４からのパイプ３５，３６
のうち前記キヤツチヤユニツト１０を前進させる
圧流体が通過するパイプ３６を、一方は前記第１
ピストンシリンダ３１に、他方は第１ピストンシ
リンダ３１の背圧を受ける第２方向制御弁４０に
夫々分岐接続し、更に、前記圧流体源３３からの
圧流体を前記第１ピストンシリンダ３１の背圧に
より操作される前記第２方向制御弁４０を介して
前記第２ピストンシリンダ３２に接続したことを
特徴とする流体制御回路。 ２ 第２方向制御弁は第１ピストンシリンダ３１
からの背圧を検出する背圧検出素子４１とこれか
らの信号により圧流体の供給方向を切換える切換
弁４２とから構成されていることを特徴とする実
用新案登録請求の範囲第１項記載の流体制御回路
。 ３ 第２ピストンシリンダと第２方向制御弁との
間には絞り付き逆止め弁４３，４４が配置されて
いることを特徴とする実用新案登録請求の範囲第
１項又は第２項記載の流体制御回路。[Claims for Utility Model Registration] 1. A catcher unit 10 that holds fastener parts one by one is fixed to a first piston cylinder 31 that can reciprocate back and forth, and a driver that is movable relative to the catcher unit 10. unit 2
In a fastener parts fastening machine in which a second piston cylinder 32 for moving a second piston cylinder 32 is attached to be movable integrally with the first piston cylinder 31, a first directional control valve 34 is connected to a pressure fluid source 33,
Pipes 35 and 36 from this first directional control valve 34
One of the pipes 36 through which the pressure fluid for advancing the catch unit 10 passes is connected to the first pipe 36.
The other side is branch-connected to the piston cylinder 31 and the second direction control valve 40 which receives the back pressure of the first piston cylinder 31, and the pressure fluid from the pressure fluid source 33 is connected to the back pressure of the first piston cylinder 31. A fluid control circuit characterized in that the fluid control circuit is connected to the second piston cylinder 32 via the second directional control valve 40 operated by. 2 The second direction control valve is connected to the first piston cylinder 31
The fluid according to Claim 1 of the Utility Model Registration Claim, characterized in that the fluid is comprised of a back pressure detection element 41 that detects back pressure from the back pressure detection element 41 and a switching valve 42 that switches the supply direction of the pressurized fluid based on a signal from the back pressure detection element 41. control circuit. 3. The fluid according to claim 1 or 2 of the utility model registration claim, characterized in that check valves 43 and 44 with throttles are disposed between the second piston cylinder and the second directional control valve. control circuit.