Printing head spacing adjustment device

Abstract

The invention provides a printing head spacing adjustment device comprising a sliding base and an ink box frame. The sliding base is provided with a top edge, a bottom edge and a first attaching surface. The ink box frame comprises a containing groove, an attaching wall, a clamping set, a variable-radius cam, a driving gear set and an elastic assembly. The clamping set is arranged between the sliding base and the ink box frame and selectively clamps the sliding base and the ink box frame to limit movement of the ink box frame relative to the sliding base. The elastic assembly is arranged at the bottom edges of the ink box frame and the sliding base in a connected mode. The variable-radius cam is arranged on a second attaching surface and provided with a peripheral edge to abut against thetop edge of the sliding base. The driving gear set is arranged on an adjustment and control surface, and the driving gear set and the variable-radius cam are coaxially connected and can rotate synchronously, wherein the driving gear set drives the variable-radius cam to rotate to adjust the height of the ink box frame relative to the sliding base.

Description

technical field [0001] The invention relates to an adjusting device of an ink-jet printer, in particular to a device for adjusting the distance between printing heads of the ink-jet printer. Background technique [0002] Generally, Wide Format Inkjet printers (Wide Format Inkjet printers) used for outputting large images often require the use of different types of printing media. However, different types of printing media have different thickness differences. During printing, the difference in the distance between the printhead of the ink cartridge and the inking surface of the printing medium will directly affect the quality of the printed image output. Therefore, the distance control of the print head relative to the printing medium is very important, and the adjustable precise value must be quite fine. [0003] With the improvement of printing resolution and the development of inkjet ink droplet miniaturization, the precision requirements of the body structure are also ...

AI Technical Summary

Problems solved by technology

The print head spacing adjustment device is used to adjust the distance between the print head and the printing medium. The traditional print head spacing adjustment device is usually realized by a linear stroke adjustment mechanism combined with a ball screw and a guide rod. Not only can the mechanism not precisely and accurately adjust the distance between the print head and the printing medium, but it is also expensive, large in size, and difficult to maintain

In addition, another existing technology is to use a linear stroke adjustment mechanism combined with a gear and a rack to achieve the distance adjustment function, but the linear stroke adjustment mechanism combined with a gear and a rack is often unable to bear the stress during use. And wear, and there will also be backlash problems, which will affect the accuracy of spacing adjustment

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