| 丝网印刷机工作原理 |
| 添加时间：2018/1/4 17:45:20 浏览次数： |
| 丝网印刷机工作原理 The working principle of screen printing press 以常用的手形网版平面丝印机为例，可对丝网印刷机的工作原理作如下描述：经传动机构传递动力，让刮墨板在运动中挤压油墨和丝网印版，使丝网印版与承印物形成一条压印线，由于丝网具有张力N1和N2，对刮墨板产生力F2，回弹力使丝网印版除压印线外都不与承印物相接触，油墨在刮墨板的挤压力F1作用下，通过网孔，从运动着的压印线漏印到承印物上。 Screen in a commonly used hand flat screen printing machine, for example, can be to make the following description: screen printing machine working principle of the drive gear transmission power, allows the movement of the scraping plate extrusion ink and silk screen printing, silk screen printing plate and the substrates to form a stamping line, N1 and N2, because the screen has tension force F2 scraping board, for back to stretch the silk screen plate except the embossed line is not in contact with substrates, inks in scraping plate under the action of the extrusion of F1, through the mesh, from the movement of the stamping line printing on substrates. 在印刷过程中，丝网印版与刮墨板进行相对运动，挤压力F1和回弹力F2也随之同步移动，丝网在回弹力作用下，及时回位与承印物脱离接触，以免把印迹蹭脏。即丝网在印刷行程中，不断处于变形和回弹之中。 In the process of printing, silk screen printing plate relative motion with scraping board, extrusion and back stretch F1 F2 with synchronous mobile screen under the back stretch, the rallies and substrates from contact, lest the print ceng dirty. The screen is in the printing process, constantly in the deformation and rebound. 刮墨板在完成单向印刷后与丝网印版一起脱离承印物，同时进行返程回墨，即完成一个印刷循环。回墨后承印物的上面与丝网印版反面的距离称为同版距或网距，一般应为2～5mm。手工印刷时，操作工人的手法与熟练程度直接影响压印线的形成。在实践中丝印工作者积累了许多宝贵经验，具体可归纳为六点，即保证刮墨板运动中的直线性、匀速性、等角性、均压件、居中性和垂边性。也就是说，印刷时刮墨板应直线前进，不能左右晃动；不能前慢后快，前快后慢或忽慢忽快；到墨板的倾斜角应保持不变，特别要注意克服倾斜角逐渐增大的通病；印刷压力要保持均匀一致；保持刮墨板与网框内侧两边的距离相等；到墨板与边框保持垂直。 The scraping plate is separated from the substrate by the screen printing plate after completing the one-way printing, and the return process is completed to complete a printing cycle. The distance between the back of the substrate and the screen printing plate is called the same pitch or net distance, generally 2 ~ 5mm. In manual printing, the manipulation and proficiency of the operator directly affect the formation of the embossing line. Screen printing workers in practice has accumulated many valuable experience, the concrete can be summarized as six, namely guarantee linearity in the movement of scraping board, uniform, isometric, equalizer, in neutral and vertical side. That is to say, the printing ink plate should move straight forward, not shaking; Slow, slow, slow, slow, slow, slow, fast, slow, slow, slow, slow, slow, slow, slow, slow, slow, slow, slow, slow, slow, slow, slow, The slant Angle of the ink plate should remain the same, especially to overcome the gradual increase of the Angle; The printing pressure should be uniform and uniform; Maintain the distance between the inks and the inner side of the frame; The ink plate is perpendicular to the border. |
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