Digital printer and swing arm type pressure roller feeding device

Abstract

The invention discloses a swing arm type pressure roller feeding device for a digital printer. The swing arm type pressure roller feeding device comprises a pressure roller (2), a feeding roller (1) of which two rotating shafts at two ends are mounted on two vertical plates, rotating fulcrums (6) mounted on the vertical plates, cylinder seats fixed on the vertical plates, telescopic cylinders (3)hinged to the cylinder seats, and swing arms, wherein the centers of the swing arms are connected to the rotating fulcrums (6), first ends of the swing arms are connected to telescopic rods of the telescopic cylinders (3), and second ends of the swing arms are connected to a central shaft of the pressure roller (2); the telescopic rods stretch and retract to drive the telescopic cylinders (3) andthe pressure roller (2) to swing at a set angle at the same time. The swing arm type pressure roller feeding device can prevent wrinkles of a medium during the conveying process of the medium, and thestepping is stable. The invention also discloses a digital printer comprising the above-mentioned swing arm type pressure roller feeding device, the beneficial effects of which are the same as thoseof the swing arm type pressure roller feeding device.

Description

technical field [0001] The invention relates to the technical field of soft coil material feeding, in particular to a swing arm type pressing roller cloth feeding device. In addition, the present invention also relates to a digital printer comprising the above-mentioned swing arm press roller cloth feeding device. Background technique [0002] In the current technology, most of the systems that realize the clamping and conveying of various flexible coils (including but not limited to: roll paper, film, textile, PVC, etc.) drive the pressure roller 02 up and down on the side of the cloth roller 01 through the cylinder 03 Lifting to achieve compaction of media. Such as figure 1 as shown, figure 1 It is a schematic diagram of a typical swing arm press roller cloth feeding device in the prior art; the disadvantage of this method is: the contact wrap angle between the medium and the cloth roller is too small, and the friction force is not enough; because the friction force is ...

AI Technical Summary

Problems solved by technology

like figure 1 as shown, figure 1 It is a schematic diagram of a typical swing arm press roller cloth feeding device in the prior art; the disadvantage of this method is: the contact wrap angle between the medium and the cloth roller is too small, and the friction force is not enough; because the friction force is too small, it is impossible to realize the transition and The gap state is not compatible with different printing media; the lifting type requires a relatively large size of the pressure roller, and the corresponding cylinder also needs to be relatively large, which requires high space requirements

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