To provide an adjust type bag making machine capable of connecting and separating a moving guide plate and a connecting member by simple constitution and work. Constitution: The adjust type bag making machine has a pair of right and left fixed guide plates 2 constituting the bottom of the bag making machine, a pair of right and left moving guide plates 5 moving forward and backward relative to the center line of the bag making machine, and connecting members 10. The moving guide plate has a conical hole 20 with a tapered bottom end for inserting a first connecting piece 14 provided at one end of the connecting member, and a notch 21 is provided at a part of the hole 20 in a circumferential direction. The end 14 a of the first connecting piece of the connecting member is inserted into the hole from the lower side of the...

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