Flat screen flat screen printing machine peace network working principle of curved surface screen printers

The working principle of the flat screen flat screen printing machine.

     1, flat screen flat screen printing machine work cycle program.With flat screen platform monochromatic semi-automatic hand side screen printing press as an example, its a work cycle is: give a > to positioning to fall edition, ink slab and ink back plate - scraping trip - litres to fall back to the ink to the ink plate plate to carry edition, ink trip to remove positioning, the receiver back.
In a continuous loop action, as long as can achieve the function of each movement takes up time should be short, as far as possible to shorten each work cycle in the same period, improve the work efficiency.
     2, stamping line.In printing, the ink plate extrusion ink and silk screen printing, silk screen printing plate and the substrates to form a contact line, called a stamping line.The line in the scraping plate edge, countless embossing lines printing surface.Achieve the embossed line is very difficult, because printing stroke is a dynamic process.
     3, silk screen printing machine working principle.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.
      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.Namely the silk screen printing trip, constant in the deformation and the springback.
      Scraping board at the completion of a one-way from substrates with silk screen printing, after printing to return back to the ink at the same time, a printing cycle is completed.The top of the back after the ink printing substrates with silk screen printing plate opposite distance is called version or net margins, generally should be 2 ~ 5 mm.Manual printing, the operation of the workers' skill and proficiency in a direct impact on the formation of stamping 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, when printing scraping board should be straight forward, not sway;Not slow, quick, before the former fast after slow or slow and fast;To the ink plate Angle should remain unchanged, paying special attention to overcome the common fault of the tilt Angle increase gradually;Printing pressure to maintain uniform;Keep scraping plate and net box inside the distance on both sides of the equal;To keep vertical ink plate and frame.

     2.The working principle of the flat screen surface screen printing press.

Flat screen surface screen printing refers to the cylindrical or conical surface with flat screen to screen printing.Under certain conditions can also be to ellipsoid, drum surface and curved surface screen printing.Dry net surface screen printing press is the flat screen printing on the surface of the machine.
With curved surface screen printing machine working principle - roller bearing b - axis will support c - bearing.When printing, flat screen plate and substrates, but scraping board still.Flat screen plate clamping on the net frame by flat screen surface screen printing press at a constant speed drive for translation, because the network version of friction was placed in the substrates of the supporting device rotates.In stamping at the surface of substrates linear velocity agree with flat screen plate movement speed, scraping the ink printing.
Stamping line in theory should be highest in curved substrates in a bus, to facilitate more off-grid Angle, ensure the quality of printing.For easy to adjust, scraping board with 15 ° to 60 ° + apex Angle, how can the vertical and the adjustment of the upper and lower size.Vertical is adjusted to be adjusted up and down to ensure edge line does not produce the lateral displacement, always aim at the highest A bus A;The apex Angle of 15 ° to 60 ° + scraping board is to ensure that the vertical scraping board Angle alpha is formed after installation.In actual adjustment, in order to ensure flat screen plate away from the surface substrates in a timely manner and embossing line can slant a bit before appropriately, especially when the diameter of substrates, stamping line must be partial, surface printing support device is all kinds of special device, by the user in accordance with the requirements of product design and manufacturing.

       Cylindrical containers or conical surface printing can be used both for roller bearing, the ratio of length to diameter of less than 1.The lid of the 5 classes and class cup with sleeve bearing, soft hollow container available inflatable device support.Ellipsoid approximation as part of the cylinder, cylinder Mosaic method supporting can be used.
On the surface of the cone to the principle of printing, and the surface of the cylinder printing, the principle of basic same, the difference is silk screen printing graphic shapes and screen plate forms of exercise.Used for printing on the surface of the cone screen in printing plate, to draw a graph on the surface of the cone, and according to the graph to find the center of the fan, then select the appropriate screen net box printing plate.
On the version can fully take care of the fan-shaped abed efgh and make consistent with fan-shaped plate.On the version efgh fixed Angle bar, and on a shaft o installation into a version of the fan rotation.And then, like the surface of the cylinder printing, with four roller support at the bottom of the version of the substrates, scraper is fixed, the fan mobile space, can be carried out on the squeegee pressure cone surface printing version.Printing, cone bearing printing scraper in pressure under line contact with silk screen printing,When the silk screen plate around the axis of fan-shaped expansion plan for horizontal fan moves, substrates in the supporting device for synchronous rotation;Ink under the crush of scraper, printing to the surface of the substrates, complete printing.