| 摘要 |
PURPOSE:To secure the always same pulled-in state of a hooking needle by constituting a hooking needle operating cam into a groove or projecting stripe cam which is formed coaxial with the axis center of a bending trunk and constituting a switching device from a clutch and a clutch gear which perform connection and disconnection only with a same phase and installing an adjusting mechanism for the cam phase independently from the switching device. CONSTITUTION:A hooking needle operating cam 15 is formed into a groove or top cam which is arranged concentrically with a bending trunk, and a needle cam and a cam follower 14 are always in contact state, and the cam follower 14 can operate smoothly, In particular, when designing is performed with the lcous of the cam 15 with the adjusted timing in storing bending or direct bending, the pulled-in state of the needle call be made same in the both cases. Since the switching between the storing bending and direct bending is performed only in the case with the equal phase in the storing bending and direct bending, the phase of the hooking needle operating cam 15 can be allowed to coincide, and the phase of the cam 15 can be adjusted finely independently of the bending state. |
