Number cylinder mechanism with air suction function

By setting up a suction negative pressure zone and a partition plate on the numbering roller, the negative pressure chamber is used to adsorb the printed matter, which solves the problem of unstable printing during the printing process, achieves stable printing, and improves the quality of the printed matter.

CN120307757BActive Publication Date: 2026-07-21NANJING BANKNOTE MINTING +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING BANKNOTE MINTING
Filing Date
2024-01-15
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing numbering rollers cannot effectively adhere to the printed material during the printing process, resulting in unstable printing on the roller surface and affecting print quality.

Method used

Design a number roller mechanism with suction function. By setting a suction negative pressure zone and a partition plate on the roller body, and connecting it to an external air extraction device using a hollow shaft, a negative pressure chamber is formed to adsorb the printed matter. The numbering assembly passes through the through hole and contacts the printed matter to achieve stable numbering.

Benefits of technology

It improves the stability of printed materials during the printing process, reduces printing vibration and drift, and ensures the quality of printed materials.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120307757B_ABST
    Figure CN120307757B_ABST
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Abstract

The application discloses a number roller mechanism with air suction function, which comprises a hollow shaft, a plurality of air holes penetrating through the internal cavity of the hollow shaft are arranged on the side wall of the hollow shaft, a roller body is rotationally connected to the outer side wall of the hollow shaft, an air suction negative pressure area is arranged on the outer side wall of the roller body, a plurality of through holes are arranged on the air suction negative pressure area, and a plurality of partition plates are arranged on the air suction negative pressure area at intervals; a number head assembly is fixedly connected to the air suction negative pressure area of the roller body, and the number head assembly is arranged between every two adjacent partition plates; a wind cover assembly is arranged on the partition plate, the adjacent two partition plates and the corresponding inner circumferential side roller body and outer circumferential side wind cover layer cooperatively form a chamber, the number head assembly is located in the chamber, the wind cover assembly is provided with a number head perforation for printing a number code of the number head assembly, the through hole is communicated with the corresponding chamber, in the process of rotation of the roller body, the through hole is connected with the air hole and forms an air suction passage to suck the air in the corresponding chamber, and the chamber is formed with a negative pressure to adsorb a printed product.
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