, 1. opus principium screen printing apparatus
Taking the commonly used hand-shaped flat screen printing machine as an example, the working principle of the screen printing machine can be described as follows: the power is transmitted through the transmission mechanism, so that the squeegee squeezes the ink and the screen printing plate in motion, so that the screen The printing plate and the substrate form an impression line. Because the screen has tension N1 and N2, it generates a force F2 on the Squeeegee {{V}} et mollitiam facit screen printing laminam non contact subiectum nisi impressionem lineam {{VI}} in atramento in contactu cum subiecto, {VII}} sub actione, {{IX}}
In processu typographico, tabula serigrapha et squeegee relative mutat ad invicem, et vis comprimens F1 et resilentia F2 etiam synchronice movent. Sub actione resilientiae, screen in tempore revertitur ad se ab substrahendo disiungere ut vitet maculam sordida. Id est, screen constanter deformatum et repugnat in processu typographico.
Sprepee separata a subiecto cum screen printing laminam post unam viam excudendi perficitur et simul redit in atramento completum a printing cycle {I}, quod est in Africa distantiam, quod est in II, quod est in Typography {{{{V}}, quod plerumque est in printing, quod est in ATTRATIONUM, quod plerumque est in Typographo, {{{V}}, quod plerumque est ad V mm, quod est in Typographeo proficiency of the operator directly affects the formation of the impression line. In practice, screen printing workers have accumulated a lot of valuable experience, which can be summarized into six points, namely, to ensure the straightness, uniformity, isometric, equalizing, centering and vertical edge in the movement of the squeegee. In other words, the squeegee board should move straight forward during printing, and cannot move left and right; Non tardius ante et ieiunium tergo tardus in fronte et tardus tergum aut subito et ieiunium; Inclinatio angulus ad atramentum tabulas remanere idem, et peculiari operam esse solvit vincere inclinationem angulus communis quaestio de augendae paulatim; Et pressura pressura debet servanda etiam et consistent; Distantia inter priuatae interius latera screen artus aequalis; In atramento laminam sit perpendicularis ad frame {{VIII}}
2. opus principium plana screen curvam screen printing apparatus
Plana screen curvam superficiem screen printing refers to screen printing cum plana screens in cylindrici et conico curvam superficierum . {I}} et arcus curvantibus, {{I}}
The working principle of the flat surface screen printing machine: a-roller support b-shaft meeting support c-inlaid support. During printing, the flat screen printing plate and the substrate move, while the squeegee is stationary. The flat screen printing plate is clamped on the screen frame and the flat screen curved screen printing machine moves at a constant speed, and the substrate placed on the supporting device rotates due to the friction of the Screen {{V}} lineares curvam subiecti in impressione linea est idem quod movens celeritas plana screen printing laminam ad consequi radi excudendi {{VI}}
Theoretically, the embossing line should be at the highest busbar of the curved substrate to help increase the off-screen angle and ensure the printing quality. In order to facilitate adjustment, the squeegee generally adopts a top angle of 60℃±15℃, and it is required to be able to adjust the verticality and the upper and lower dimensions. The adjustment to vertical is to ensure that the cutting edge line does not shift horizontali cum adjusting et descendit semper varius cum summa bus talea; the squeegee with a top angle of 60℃±15℃is used to ensure that the squeegee inclination is formed after vertical installation . In the actual adjustment, in order to ensure that the flat screen printing plate is separated from the curved substrate in time, the impression line can be slightly advanced, especially when the diameter of the substrate is large, the impression line must be offset forward. The support device for curved printing is Various Genera specialis cogitationes sunt disposito et fabricari per users secundum productum requisitis {{IX}}
Cylindricum vas aut conicum vas imprimere potest cum duobus paribus cylindricorum laguncularum, manicarum laguncularum pro operculis et poculis cum ratione longitudinis ad diametrum minus quam 1.5, et flexibile cava vasa sustineri possunt per inflatilia instrumenta. Ellipsis est circum circa partem cylindricae superficie, quae sustineri potest per methodum cylindrici inlay.
The principle of printing on the surface of a cone is basically the same as that of printing on the surface of a cylinder. The difference is the graphic shape of the screen printing plate and the movement form of the screen printing plate. When making a screen printing plate for printing on the surface of a cone, first draw an expanded view of the cone surface, and find the center of the sector based on the expanded view, and then select Oportet screen frame ad screen printing laminam {{II}}
On the plate efgh that can completely contain the fan-shaped abed, a printing plate that matches the fan shape is produced. Fix the right-angle rod on the plate efgh, and install it with o as the axis to form a plate that can be rotated in a fan shape. Then, just like printing on the surface of a cylinder, 4 rollers are used to support the substrate under the plate, the squeegee is fixed, and the Plate frame movetur in fan figura, et Springee est pressurized ad print in superficie of Conticum laminam {{V}} Dum printing, quod conica laminam sub certa pressura; Cum screen excudendi laminam movet in horizontali fan figura circa axem fan informibus explicare drawing, subiectum rotat synchronice in supporting fabrica motus; In atramento est expressi per Sprati et Leaks ad superficiem subiecti ad perficiendam printing {{VII}}