Three-phase standard energy meter is the key instrument used in the power metering industry, high precision, multi-function, small size is the development direction of the product. As a man-machine interface unit, the film panel is the key component of the three-phase standard energy meter, its appearance and performance to improve the beauty and practicality of the three-phase standard energy meter has extraordinary significance, so the three-phase standard energy meter manufacturers pay more and more attention to the design and manufacturing of the film panel, I participated in the design of a standard energy meter film surface. I from their own division of labor to talk about the design of thin film panel manufacturing process precautions. Due to my talent and shallow learning, inadequacies, welcome to correct.
First, the appearance of the film panel
From the appearance point of view, the film panel size is larger, reaching 43cm×13cm, which puts forward higher requirements for the contour cutting of the instrument panel, so the author suggests that the mold department use imported blade to make the contour cutter die. The panel has a total of 21 keys, and the shape of the keys is rounded rectangle. The radius of the rounded corner is 1.5mm, the background color of the key has three colors, respectively, the background color, blue gray and red, the outline of the key is 0.5mm wide black line. The font on the key adopts the black body suitable for screen printing, which is conducive to improving the beauty of the printing line.
In the left center of the entire panel is a transparent display window, which uses a dark gray outline to look more striking and coordinated. Outside the dark gray outline, there is a dark gray outline line with a cash value of 0.5mm, which plays a double role in suggesting what is beautiful.
The lower right of the whole mask has seven eye-catching characters: "three-phase standard energy meter", as the name of the entire instrument, displayed, the font is black, the color is black, and is located right below the key area, in order to make the visual effect more coordinated.
The top and bottom of the thin film instrument panel have two dark gray contour lines with a width of 5mm, the reason why the contour line is set on the longest edge of the instrument panel is to "shade", reduce the visual dissonance effect caused by the gap between the instrument panel and the chassis, but also means that it looks more precise and more beautiful, after all, the gap is reduced. At least it seems to have been shrunk.
Second, the appearance of the film panel film design steps and precautions
Color: Five kinds, respectively, light blue, blue gray, red, black, gray black.
Layout: One by one.
Third, the film panel line film design precautions
The film needs screen printing, conductive silver paste, carbon paste and insulating oil.
Note summary:
1. Before screen printing, the high-temperature baking step of PET sheet is essential.
2. The unit price of conductive silver paste is higher, so screen printing personnel should pay attention to avoid waste when operating.
3. the selection of the correct insulating oil is conducive to avoiding the problem of poor adhesion of insulating oil.
Four, mold design and attention of the film switch panel
The cost of the die is directly related to the circumference of the blade, which is artificially uncontrollable because it is determined by the shape of the product. The convex die of the panel is closely related to the area of the die, and the shape of the convex die can be effectively reduced and the cost can be saved by setting the positioning column reasonably.
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