Calibration device for invoice printing

Abstract

The invention relates to the technical field of invoice printing and discloses a correction device for invoice printing. The correction device comprises a rack. Guide rolls and a correction mechanismare arranged on the rack. The correction mechanism comprises correction plates oppositely arranged on the two sides of a paper sheet. A first wedge rod is fixedly connected to each correction plate. The correction mechanism further comprises a U-shaped tube containing liquid. First pistons are slidably connected to the interiors of the two ends of the U-shaped tube correspondingly. A first pistonrod is fixedly connected to each first piston. Each first piston rod is provided with a first wedge groove allowing the corresponding wedge rod to be inserted in. A balancing bar is rotatably connected to the rack. The two ends of the balancing bar are located in the two ends of the U-shaped tube correspondingly. The two ends of the balancing bar are fixedly connected with buoys located on the liquid level of the U-shaped tube. An airbag is arranged on the rack and communicates with the two ends of the U-shaped tube through guide pipes. Valves with valve rods are mounted on the guide rods correspondingly. Push rods abutting against the balancing bar are fixedly connected to the valve rods of the corresponding valves. The correction device can correct deviated invoices in time and can protect the paper sheet against abrasion caused by hard contact between the correction device and the paper sheet.

Description

technical field [0001] The invention relates to the technical field of invoice printing, in particular to a correction device for invoice printing. Background technique [0002] During the printing process, due to the long-term use of the equipment, the sensitivity will decrease. One of the very common situations is that the paper is shifted during the printing transmission process. If the position of the paper is not corrected in time at this time, the printed invoice will The fonts of will be shifted and will not meet the standards and become invalid tickets. Most of the traditional printing machines are not equipped with correction devices, and manual inspection finds errors in the printed invoices. At this time, the usual solution is to stop the machine first, perform manual corrections, and then restart the machine to continue printing. The invoices can only be discarded directly because they do not meet the standards, resulting in waste of resources and low printing e...

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned patented solution solves the deficiencies in the traditional cleaning method, there are still some points to be improved in this solution: in this solution, the side correction mechanism is close to the side of the unwinding drum to correct the offset paper. Correction, due to the hard contact with the paper during the correction process, and the paper moves with the unwinding roller, it is easy to cause serious wear of the paper and affect the quality of the entire invoice

Images