How Make Pencil?
It can be divided into pencil plate, lead core, pencil rod, finished product decoration and other technological process.
The pencil plate is processed to cut off the log, and the square saw into the wood block. After water heat treatment, the cutter is cut into a pencil plate. Plate length 184mm, width 73mm, thick 4.8 ~ 5.2mm. Then through heating dry (60 ~ 120 ℃) and high temperature (130 ~ 200 ℃) degeneration, pencil board is made to reach the degree of softening, easy cutting.
Lead core processing graphite lead core match well with graphite and clay in a certain proportion, the kneading machine, three roller machine mixing, extruded through the pressure core machine a certain size (such as HB ~ 3 h lead core diameter is 1.80 ~ 2.10 mm) of the lead, the dry heating (50 ~ 150 ℃) and high temperature (800 ~ 1100 ℃) roasting, make its have certain mechanical strength and hardness, and finally made by immersion treatment.
The color lead core is similar to graphite lead core, but no sintering is required. There are two kinds of processing methods: one is to mix the clay, the talcum powder, the adhesive, the color material, the oil and the wax and so on, after forming, drying and making, known as the mixing method; Is another kind of kaolin, talcum powder, such as colour and adhesive mixing extrusion into the lead or put the dry lead oil core container, under a certain temperature to make it fully absorb grease and made of called immersion method.
Pencil machining screw Plane will pencil board slot machine with cutting into a thickness of 4.1 ~ 4.1 mm, and have adapted to lead core diameter core trough trough plate, and then use the cement will lead and pencil board agglutination, under the clamping state of heating dry (50 ~ 120 ℃) 1 ~ 8 hours, the plane rod machining made from 178 ~ 180 mm in length of picea meyeri pencil.
Exterior decoration processing Picea meyeri pencil to paint and printing decoration, as well as cut light, printed trademarks, rubber top processing, make its have certain specifications, appearance, color and patterns of the pencil.
GELGOOG have the wooden pencil making machine and paper pencil making machine.