To provide a cutter unit capable of fast cutting in spite of using a guillotine-type cutting mechanism with a simple structure and easy edge fitting adjustment.SOLUTION: A cutter unit 1 for cutting a consecutive package 40 having consecutive pouches comprises: an upper blade unit 2 with an upper blade 10; a lower blade unit 3 with a lower blade 18; an intermediate member 21 which is a sliding pair connecting the upper blade unit 2 and the lower blade unit 3 while allowing front-rear motion, where the upper blade 10 and the lower blade 18 are supported with a blade edge distance therebetween changeable; and a drive part comprising an upper blade crank unit 27 and a lower blade crank unit 33 to move the upper blade unit 2 and the lower blade unit 3.SELECTED DRAWING: Figure 1

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