The main purpose is to avoid the one-time use of wood and paper, use permanent pen holders, improve refill utilization, use recyclable raw materials in production, reduce energy consumption and not discharge polluting waste, such as: "Suitable "Environmentally friendly pencils for children" is a very good patented technology for the production of environmentally friendly pencils. The patent number is: zl2009201616439.
Environmentally friendly pencils suitable for children
Patent technology transfer feasibility report
Technical introduction:
This invention fully takes into account the physiological characteristics of children below the third grade of primary school and preschool children: due to the poor ability to understand and control things at a young age, the nervous system It is not yet fully developed. Problems such as broken lead and difficulty in replacing the lead often occur during use of existing automatic pencils. In addition, compared with the present invention, existing automatic pencils require higher processing accuracy (close to ±0.001㎜ ), the precision requirements for production processing and mold opening have also increased accordingly, the manufacturing difficulty has increased, the mold life cycle has been shorter, and the production cost has increased. In short, the use of existing similar pencils requires refined operating techniques and rich operating experience. Adults They are difficult to master and basically cannot be used by children. During use, pen refill replacement failure, pen refill breakage, splitting, excessive cutting, etc. often occur, resulting in the waste of refills, unnecessary annoyance and unhappiness, and unnecessary consumption of time. In addition, due to its structure, there are Pen cores that are more than one-third of the total length cannot be used. To sum up, the utilization rate of the pen core is less than 30%. The difficulty of operation, short service life and extremely low refill utilization rate are restricting the popularity of this pencil. The root cause of the application.
The present invention has low requirements for machining accuracy (±0.05㎜, except for the pen core pin tip knife, the functions of other parts are very normal at ±0.08㎜), so the requirements for mold accuracy are low. If Under the same precision, the service life of the mold is long (nearly a hundred times). Compared with existing products, each component is larger in size, which facilitates mass production and manufacturing. The production cost is greatly reduced. If the service life of the product is equal to the same processing precision, The performance will be greatly improved, and the market competitiveness of the product will also be improved. The object of the present invention is to provide a permanent pen-holder environmentally friendly pencil that is suitable for use by children, is easy to operate, has perfect performance, is fully functional, safe and reliable, is easy to process and produce, has low cost, has great market competitiveness and development prospects, and its refill is sharpened. The sharp knife is elastically and softly connected to the top of the pen cap. The pen refill sharpener uses the pen core entity as the axis to cut the pen refill. This design has no requirements for the concentricity between the sharpener and the pen cap, between the pen core and the pen barrel, or between the pen barrel and the pen cap. , so there will be no problem of the pen core breaking during the sharpening process due to low product processing accuracy and loss of concentricity after use and wear. It can also effectively avoid the problem of unrefined operating techniques during the pen core sharpening operation. The radial deflection force causes the pen core to break. The inner hexagonal refill anti-rotation hole on the head of the permanent pen holder is elastically consistent with the hexagonal anti-rotation refill refill. The pen refill is pushed out and retracts the piston set in the pen holder. The upper and lower wings of its tail part have good lateral elasticity. The refill push-out teeth mesh with the cylindrical refill push-out rack equipped with a return spring on the head. The piston on the lower wing retracts the retraction teeth and the retraction rack. The refill push-out rack is equipped with a refill push-out button and refill replacement at the rear. Toggle, this design can easily insert the refill from the refill anti-rotation hole on the head of the pen holder. The replacement process of the refill is extremely convenient. Each time the refill ejection button is pressed, the refill can be accurately moved out of the pen head by 1 mm, which is reasonable. The perfect cutting pen tip lays the foundation. During the sharpening process, the pen core will not break, split, or be sharpened too much, and the pen core utilization rate reaches more than 95%. In addition, this design can also effectively utilize short lead cores and broken lead. Refill, no need to worry about the refill breaking, as long as the refill is above 0.5 cm, it can be used normally. The design of the permanent pen barrel avoids the large consumption of wood for wooden and paper-rolled pencils, making it an environmentally friendly pencil.
Economic benefit analysis: Due to the different raw materials used, the factory profit is expected to be more than ten to thirty times the cost if the cost is between 0.05 yuan and 0.3 yuan. The cost is between 0.05 yuan and 0.10 yuan, which is ordinary Products ranging from 0.10 yuan to 0.2 yuan are mid-range products, and products 0.2 yuan and above are high-end products. Their usage performance is the same, but their service life and impact resistance are very different. They can meet the needs of different consumers. Since the pencil lead of the present invention is non-cylindrical, it has a bright market prospect and considerable profits.
Factory conditions and suggestions: Depending on the scale of production, it is best for pencil lead manufacturers and automatic pen manufacturers to take over the production of this project, and only need to open the mold to start production. You can also outsource the processing of parts and then assemble them, which can reduce initial investment costs.
Remarks: I have successfully made a sample by hand. Although the appearance and accuracy are not satisfactory, the function is good and stable, and the test results have been well received by children.