Conveying module and conveying device for packing machine

A conveying module for a packing machine, comprising a modular pedestal, wherein a telescopic linkage mechanism and at least two holding units are provided on the modular pedestal, the holding units are arranged in parallel for placing packing bags, each holding unit comprises a left holding component and a right holding component which are configured to be engaged with sides of the packing bag and are movable relative to each other, the telescopic linkage mechanism is configured to enable the left holding components and the right holding components to move relative to each other, so as to drive all the holding units to synchronously switch between a bag deployed attitude and a bag retracted attitude, and a spacing distance between the left holding component and the right holding component in the bag deployed attitude is larger than that in the bag retracted attitude,

• wherein a bag width adjusting mechanism is provided on the modular pedestal, and is associated with at least one of the left holding component and the right holding component to synchronously adjust the spacing distance between the left holding component and the right holding component of each holding unit to adapt to packing bags of different sizes,
• wherein the bag width adjusting mechanism is associated with the telescopic linkage mechanism, and is associated with at least one of the left holding component and the right holding component via the telescopic linkage mechanism, and
• wherein the bag width adjusting mechanism comprises a limiting member and an elastic member, the limiting member is adjustably connected to the modular pedestal of the conveying module for the packing machine, and the elastic member is configured to act on a telescopic control member of the telescopic linkage mechanism to enable the telescopic control member to elastically abut against the limiting member.