Understanding of the design and manufacture of plastic mold

Plastic industry is a high polymer chemical department of producing synthetic resin and plastic products, but also to industrial manufacture of plastic processing machinery and mold included. Plastic industrial production and varieties, production and development mainly depends on the synthetic resin, so the relationship and petrochemical close Plastic with its light weight, high strength, corrosion resistance, high production efficiency, low energy consumption characteristics in some areas, machinery manufacturing, building departments, can replace the metal and wood; in electronics, electrical appliances and other departments, has become one of the essential materials of plastic; plastic products widely used in agricultural production and people's life.; in packaging, it can be said that the current no plastic, almost no packaging industry plastic industrial modernization is a material industry develops very fast, the 1946 world plastic yield only 600kt, 1970 has reached 30.4Mt. In 1984 reached 72Mt, accounting for three of synthetic materials (plastics, synthetic rubber, synthetic fiber) 5% of the total output, concentrated production areas are in Western Europe (35%), North America (30%), Asia (17%), Eastern Europe (13%. 70 years later, the new situation of plastic industry is: ① synthetic resin device to realize the large scale, continuous and automatic production line, single reached more than 120kt. High efficiency catalyst and process is simplified, and the energy saving bulk polymerization method realized industrialization. In the varieties, linear low density polyethylene asked and large-scale production is the outstanding representative. The engineering plastics, composite materials and high performance materials development is very rapid, there have been many new varieties, such as liquid crystal self reinforced plastic started mass production. Engineering plastics growth rate has exceeded the general plastics, such as in the 70's, the development speed of engineering plastics for an average annual growth of 15%, more than twice as high as in many general-purpose plastics. The 1984 world engineering plastics consumption growth rate is 14%, the total consumption of 1.383Mt. The plastic processing to energy conservation, conservation of raw materials as the goal, plastic machinery more and more high level of automation; the new method processing emerge. For example: reaction formation, structural foam injection molding and injection molding of thermosetting plastic (see injection molding); CO extrusion technology, CO extrusion film, sheet and profile (see extrusion); multi-layer blow molding, extrusion blow molding and injection stretch blow molding (see blow); Reinforced Plastic Pultruded etc.. The world plastic annual per capita consumption of 1970 8kg1980 13.4kg, in 1995 is expected to reach 22.5kg, industrial developed countries more than 50kg.

The purpose and significance of the snow shovel design

The design and production of the snow pushing shovel mainly for caused by climate change in the north and the South heavy snow, often appear vehicles trapped on the road, can not run phenomenon.

The design of the plastic snow scoops is to use simple device, the first time, at the least cost to solve the problem. To make the vehicle even in the snow road can still SMOOTH OPERATOR purpose. After all the existing basic structure and clear snow snow shovel were studied and compared, a collection of design of large snow front shovel and spade's advantage, and use their ideas and empirical formula, according to the actual situation we are in, the structure design and strength of the shovel surface. Using the slider crank mechanism is the simplest realization contraction exercise we need to drive the push snow shovels. Above is the major snow pushing shovel manufacturers to introduce the design goal of the snow pushing shovel and knowledge, and they hope to help the vast number of consumers in the use process.

snow brush scrapers material

PP cutting disc on a good angled (∠ 135 °) drilling, and then chopped flat steel window ice scraper or PP, nylon string inserted after folding to brush mounted on municipal sanitation trucks for street sweeping \ cleaning snow and so on. Installed in the municipal sanitation sanitation trucks for street sweeping brush or steel disc disk brush category is the most representative of a brush. Products sweeper brush, drum combination tablet sweeping brush, roller brush sweeper, sweeper brush, road sweeping brush box, circle branch road sweeping brush, sewage treatment brush, plastic lever scrapers  computers washing machine brush and so on. Sanitation trucks disc sweeping brush, made ​​of high strength plastic wire brush making, used to clean the dirt floor; washing machine with a brush. Available with a wire brush material PP, PA wire or wire types.

car snow brush hair brush wire material

Hair brush filament material is divided into four categories: 

1 metals: car snow brush copper wire, galvanized wire, wire cloth needle, flat wire, copper wire, stainless steel wire. 

2 animal bristles: bristles, horsehair, horsehair, wool. 

3 plants BROWN: sisal (white brown), mountain brown. 

4 car scraper with glove is a plastic nylon: PP, PA, PET, 1010,610,612, silicon carbide abrasive filaments, aluminum oxide abrasive filaments. It is now the most important manufacturing brush wire brush materials.

snow brush scrapers experimental procedures

1, after taking a length of about 20 cm, about 2 cm car scraper with glove thick aluminum wires, the upper hand, the lower end is immersed in a test tube containing a hot solution of sodium hydroxide (concentration of 6 mol / L), a large number of bubbles to the reaction removed, to remove the oxide film on the aluminum surface. 

2, rinse with water and then immersed in these end 0.1 mol / L of mercuric nitrate solution 1 min ~ 2 min, car ice scraper glove rinsed with water immediately after removal and dry surface water with filter paper. 

3, this was allowed to stand on glass aluminum observed phenomena. You can see the aluminum surface quickly produce a white fluffy material (alumina) and growth over a period of time was hairy.

car snow brush brush civilian classification

Civil Brush Type: toothbrush, paint brush, household cleaning brush . The industrial application of all the brush brush on industrial machinery production .
Industrial Brush
Professional production of auto snow brush  brush roller, brush plate , disc brush, brush , rubber rollers , sponge rollers , grinding ( abrasive wire ) brush roll , nylon brush roll , copper wire brush roll , ordinary wire , bristles , mountain brown , sisal, horsehair , wool, cotton and other materials brush roller brush roller , brush in hand are: a round brush roll , square, diamond , triangle, disc-shaped , bar , conical, cylindrical and other shapes. Mechanical brush roller, brush , brush plate , automotive snow brush strips , brush plate for glass industry ( glass mirror , glass technology ) , CNC machine tool industry , sheet metal industry , plating Dou board manufacturing industry , textile industry ( printing machine, singeing machine , combing machine, coating machine , setting machine ) in the electronics industry , metallurgical industry ( grinding, cleaning ) in the printing industry , leather industry , footwear industry , furniture industry , tobacco industry , paper industry, ceramics , and tile raw , green , fruit and vegetable cleaning, polishing instruments , denim polished ( abrasive wire brush roller ) , etc., other grinding, cleaning , division, polishing , waxing and other machinery ( domestic and imported ) equipment.

snow brush scrapers anti-static brush Introduction

Anti-static auto snow brush made ​​with plastic handles, anti-static plastic made ​​from silk or animal hair bristles.
With anti-static properties stable, easy to use features.
   Type: toothbrush type (horizontal handle), paint brush type (straight shank), U-type (curved handle) and so on.
Anti-static horizontal handle large snow brush with ice scraper details:
Anti-static brush made ​​with conductive plastic handle; handle surface resistance: less than 10, 7 th; hand flat surface resistance: less than 10 9 th; bristles: anti-static plastic wire, animal hair or wire; bristles height, Flex can be customized.