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专利名称：Apparatus for making coiled springs发明人：Takeji Matsuoka申请号：US07/966329申请日：19921026公开号：US05269165A公开日：19931214
摘要：A process for making coiled springs by intermittently rotating feed rollers witha wire held therebetween to feed the wire through a wire guide into engagement with abending die at the outlet of the wire guide, thereby coiling the wire is provided, whereinas a follower of a cam unit moves toward the base circle of a pitch cam by the force of aspring, a pitch tool extends in an extending direction for pitching, and as the follower ofthe cam unit moves away from the base circle of the pitch cam against the force of thespring, the pitch tool is retracted in a retracting direction, whereby pitching is completed.The apparatus for practicing this process comprises a cam unit having a pitch cam, aconnecting rod following a follower of the cam unit, a spring for exerting a spring forceto engage the follower of the cam unit with the pitch cam, a pitch tool extendiblethrough a pitching lever by the force of the spring to determine the pitch of the coiledspring to be formed, a spring for constantly exerting a spring force to retract the pitchtool, a stopper for independently restricting the pitch tool to the position to which it isextended or to its reference position, and a roller rotating mechanism for intermittentlyrotating feed rollers at a given angle in a certain direction, the rollers feeding a wire to abending die positioned in front of the pitch tool.
申请人：MEC MACHINERY CO., LTD.
代理机构：Oblon, Spivak, McClelland, Maier & Neustadt
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