From the production process of a pencil, let s talk about what kind of production labor is involved

Workers cut down trees.

The vehicle is transported to the factory.

Factory processing. Use a machine to turn it into a suitable size, use a planer to plane into the basic shape of a pencil, split it in half, make a suitable position for the refill, load the appropriate refill, and re-fix the brush to paint.

1.Peeling, opening, steaming tank, cutting board, baking board, planing groove, rubber core, bundle clamping, drying, planer rod, pen selection, painting, printing, packaging.

2.The complete one is like this, not to mention cutting down the tree, then peeling the bark, and then sawing into a long strip of about 20 cm wide and 12 cm, the length is not limited, generally 30 cm. Then cook it.

3.It is cut by machine like a rice cake into pieces with a thickness of about 5-6 mm or about 20 cm in length, and then sent to a baking bucket to dry, and paraffin wax is added during the baking process to prevent deformation and increase cutting performance.

4.According to the width of the board, planing n semicircular grooves on these wood chips, putting in a refill, covering it with the same board, gluing it well, pressing it tightly and putting it in the oven, and then using a model knife to plane out the upper semicircle or half of the hexagonal half and the lower semicircle respectively.

5.The pen is divided into different grades, and then at least 6 primers, 3 topcoats, printed with gold letters, cut light on both sides, and then close a head with paint according to the order, or wear a rubber head, and then inspect and pack.

The workers cut down the tree, transport it to the factory, use a machine to make it into a suitable size, use a planer to cut it into the basic shape of a pencil, split it in half, make a suitable position for the refill, load the appropriate refill, and re-fix it and paint it.

Logging, handling, planting, mechanical production, graphene, crating.

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Pencils go through molding, offset printing, assembly and other processes.

The pencil is divided into two parts: the pencil cap and the pencil shaft, and the pencil cap is mainly made of polyester material, and the production process can be divided into molding, offset printing, assembly and other processes to complete it.

Pencil board processing dissolves and cuts the logs, splits them into wooden blocks with square saws, and cuts them into pencil boards through a board cutter after hydrothermal treatment. Lead core processing graphite lead core is made of graphite and clay in a certain proportion, after mixing by kneading machine and three-roller machine.

The lead core of a certain size is extruded by the core presser, heated and dried and roasted at high temperature to make it have a certain mechanical strength and hardness, and finally made by oil immersion treatment.

The pencil board is planed into a groove board with a thickness of thickness and a core groove that is suitable for the diameter of the lead core of the piercing beam, and then the lead core and the pencil board are glued together with a glue, heated and dried for 1 8 hours in the clamping state, and then processed by the planer machine to make a white pencil with a length of 178 180mm.

Exterior decoration processing: The white rod pencil is painted and printed for decoration, as well as cutting, printing trademarks, filling eraser heads, pen caps, etc., so as to make it a finished pencil with certain specifications, appearance colors and patterns.

In fact, the pencil lead is not poisonous, the lead is toxic, and the main raw materials for the manufacture of the pencil lead are graphite and clay, so the pencil lead is non-toxic. The main components of the lead of the pencil are graphite and clay, which is a solid with a metallic luster in the form of scales.

Among them, there are carbon-carbon chemical bonds, between the layers is van der Waals force, carbon-carbon chemical bonds are very stable, it is very difficult to break, which is why diamond and graphite are composed of carbon, but the physical properties are very different, there is nothing in the human body that can break the carbon-carbon chemical bonds, so it is certain that the pencil lead is safe.

Workers cut down trees.

The vehicle is transported to the factory.

Factory processing. Use a machine to turn it into a suitable size, use a planer to plane into the basic shape of a pencil, split it in half, make a suitable position for the refill, load the refill with a suitable liquid ruler, and re-fix the paint. Debaters.

The pencil can only be made after planting trees, cutting trees, and making lead cores.

1. Plant trees. Arbor Day in China is on March 12, so most people think that the best season for planting trees is in March, which is in spring. (as shown in the image below).

2. Logging. In order to protect the precious forest resources, the villagers are forbidden to go up the mountain to cut wood, we cut wood for materials, and at the same time, we also have to afforestation and protect seedlings, so as to ensure the balance of resources. (as shown in the image below).

3. Make a lead core.

The embodiment relates to the technical field of pencil manufacturing, in particular to a colored lead core with smooth writing and preparation method thereof. A colored lead is a pencil lead that uses a pigment as a colorant. (as shown in the image below).

Origin of the pencil:

In 1662, the world's first pencil factory, the Shidellou Pencil Factory, was built in Nuremberg, Springbend, Germany. Later, the German F. Kast founded the Fapocaster Graphite Pencil Factory in Nuremberg, using sulfur, antimony and other binders to make lead cores by heating and mixing graphite, which made a big step forward in the manufacturing technology of graphite pencil barrels.

For the first time, NJ Kant of France used the method of washing graphite to improve the purity of graphite, and used clay to bond graphite into a refill, which is known as Kant's method.

The foundation was laid for the pencil industry. Later, after trial and error, the French chemist Comte switched to clay as a hardener, resulting in a more durable and wear-resistant refill than before, and this method is suitable for any graphite mine, and is still in use until 2018.

There is a carpenter named William Monroe in the United States, who embedded a black lead core in a wooden strip carved with grooves, and then glued the two wooden strips together in half to make the world's first pencil shaft. <>

1. The huge blender is equipped with a heavy lid to seal the powder and water inside to heat and stir. 2. In the extrusion chamber, the mixture is squeezed into the dryer. After several processes of mixing, drying and baking, the pencil has completed the preliminary process.

3. Because the micropores generated in the high-temperature baking lead core banquet will affect the use of writing, at this time, liquid hot wax is injected into the lead core to fill these micropores. Makes the lead core write more smoothly. <

1. The huge blender is equipped with a heavy lid to seal the powder and water inside to heat and stir.

2. In the extrusion chamber, the mixture is squeezed into the dryer. After several processes of mixing, drying and baking, the pencil has completed the preliminary process.

3. Because the micropores generated in the lead core baked at high temperature will affect the use of writing, at this time, liquid hot wax is injected into the lead core to fill these micropores. Makes the lead core write more smoothly.

4. Grinding and rotating the blade through the grinding wheel to cut a groove 1 mm deep. Apply the high-strength elastic glue evenly on the entire groove surface, and place the lead core mixed with the wooden strip into the glue-coated card slot.

5. The semi-finished pencil is stacked in the drying room, and the temperature is about 60 degrees Celsius to evenly dry the moisture. The semi-finished pencils are fed on to the next process, where each piece is precisely cut to the centimeter.

6. The cut pencil is transported to the paint booth. Apply two coats of primer, dry the paint surface, and then apply a glossy finish to increase the wear resistance of the pencil surface. The ends of the pencil should also be polished to remove any excess paint from the surface.

7. Polishing the edge of the hexagonal shape at the top of the pencil and then printing the pencil's name, and it's done.