Fault analysis of the sealing device for cleaning the print head of the heat transfer printing machine
The printing head cleaning and sealing device of the heat transfer printing machine is an important part of the printing head, especially the cleaning and sealing device for separating the printing head is more complicated. The whole device is installed at the leftmost end of the print head moving slide rail, that is the protection position or the initial position of the print head. The device mainly completes four actions of “scraping, wiping, covering and sucking”, so as to maintain the print head and ensure its normal operation. In this device, the “scraping and wiping” device has a relatively simple structure and is not prone to failures. At most, it is only damage to the rubber products. It can be removed and used without much impact on the printing effect.
The function of the nozzle cover of the heat transfer printing machine is to seal the print head well when the printer is not in use, to ensure that the inkjet port has a certain degree of wetness, and to prevent the nozzle from drying up and blocking. The common fault is that the airtightness is not tight. There are two main reasons for this fault: one is the deformation of the shield. The shield has a certain elasticity, and a slight deformation will not cause a loose seal. If the deformation is serious or the surface is stained with large impurities, it will cause a loose seal; the second is that the shield does not move in place. During the working process, the shield has a range of movement in both the radial and axial directions, so as to coordinate with the movement of the print head. When the movement of the shield is restricted, the print head at the initial position cannot be accurately performed. of airtight.
Both of the above faults can be directly observed, just need to adjust or replace parts.
