a printing machine

Abstract

The invention discloses a printing machine, which includes a stand, a printing arm, a cylinder, a tension spring, an elastic platen, a screen frame, a scraper, and a screen frame fixing device. The stand includes a frame foot and a fixing device fixed on the frame foot. Arm, the fixed arm is linear, and the legs are arranged around the outer periphery of the fixed arm. One end of the printing arm is hinged with the lower part of the fixed arm. The piston rod of the cylinder extends from one end of the cylinder body and is hinged with the upper end of the fixed arm. The cylinder The other end of the cylinder is hinged with the middle part of the printing arm and slides with the printing arm along the length direction of the printing arm; one end of the tension spring is connected to the middle part of the fixed arm, and the other end of the tension spring is connected to the printing arm through a slide plate. The slide plate is in sliding fit with the printing arm; the bottom of the elastic platen is in sliding fit with the frame legs. The invention can buffer the movement of the cylinder to lift up or press down the printing arm, and supplemented by the elastic force generated by the elastic platen, it can greatly reduce vibration and improve the positioning accuracy.

Description

technical field [0001] The invention relates to a printing machine. Background technique [0002] In the field of printing machines, the scraper needs to move back and forth to scrape the screen frame, so that the dye on the screen frame falls into the cloth on the elastic platen. The scraper is generally installed on the printing arm through the guide rail, and the printing arm is hinged with the frame of the printing machine. After the ink is covered and the plate is moved, that is, after the scraper scrapes a screen frame, the next screen frame enters the scraper from the previous station. At this time, the printing arm needs to be lifted up, and then the screen frame and scraper should be lifted. Generally, the cylinder is used to drive the printing arm up. Due to the rapid movement of the cylinder, the lifting or pressing down of the printing arm will be too fast and vibration will occur, which will cause the relative displacement of the printing arm, the screen frame ...

AI Technical Summary

Problems solved by technology

Generally, the cylinder is used to drive the printing arm up. Due to the rapid movement of the cylinder, the lifting or pressing down of the printing arm will be too fast and vibration will occur, which will cause the relative displacement of the printing arm, the screen frame and the scraper, which will affect the cover. Bit accuracy, which leads to different positions of printed patterns on different fabrics of the same batch

[0003] Moreover, the scraper is also reciprocatingly lifting and pressing down on the printing arm. Combined with the lifting and pressing down of the printing arm, this will cause the screen frame that is not completely stably fixed to jump and affect the printing accuracy. In addition , because the mesh of the screen frame itself cannot be set too small, the pattern printed on the fabric is not delicate enough, and there are pixel particles

[0004] In addition, the above-mentioned scraper, screen frame and other parts used to scrape the cloth are called printing head assembly, and since the elastic platen is supported by the guide rail below it, after the printing head assembly exerts pressure on the elastic platen, it will form The "hard-to-hard" situation will further aggravate the vibration of the elastic platen, and may even cause the elastic platen to break. Moreover, because there is a guide rail under the elastic platen, it cannot be inserted into the finished clothes for printing, which is very inconvenient

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