Plastic machinery requires maintenance and maintenance, regardless of Plastic Extrusion Machine, ,Plastic Mixer or,Plastic Crusher. Plastic crushing machine use and maintenance, according to machine type and working conditions are different. The general is the note:

In 1, before starting the human will, shall be used to drive wheel move one or two laps, confirm the flexible movement, can only boot. Such as crusher in normal operation only after feeding.

2, stop before the operation, should stop feeding and material discharging machine in the net, and then cut off the motor power supply.

3, in the operation should pay attention to the temperature of the bearing, bearing to keep good lubrication, and pay attention to sound and vibration are abnormal. Found in the normal condition, should check for parking is not easily broken objects stuck, or mechanical damage.

4, to keep the crusher uniform feeding, preventing overload. To prevent the metal and wood can not be broken objects fall into the machine. Not broken, feeding water can not be excessive; wet crushing, is required to maintain proper water for flushing, prevent lack of congestion, reduce the production capacity.

5, check whether it meets the requirements of the size of crushed. If more than a predetermined size particles in excess, should find out the reason ( such as the sieve gap is too large, discharging mouth too wide, hammer wear ), and take appropriate measures to eliminate.

6, crusher when parking, to check if the fastening bolt is strong, easy wear parts wear degree. The toothed crusher, should also make use of the opportunity to get rid of parking sandwiched between teeth of wood.

In 7, the worn-out parts, should be timely replacement or repair.

8, crusher safety device, to remain in good condition, can not save, and so the insurance device failure.

According to a recent months of observation results, Plastic Crusher already more and more get the trust of customers, more customers have to buy Plastic crusher. The crusher ‘s development is a good thing, so plastic crusher so popular a significant aspect is his and environmental protection are closely related, life has a lot of garbage, let you have a headache, so you have no place to pile up, and this product just to solve this problem, Plastic Mixer, ,Plastic Extrusion Machine and plastic crusher, is the good helper of environmental protection equipment.

And know the plastic crusher is the recycling of waste plastic granulator, one of the key equipment at home and abroad, at the same time, waste plastic crusher can meet the environmental requirements of plastic recycling. Dirty agricultural film waste, waste packaging material or hard plastic crusher where you can get a good deal of plastic. In addition, plastic crusher production lines are simple and effective, broken plastic functional plastic varieties, such as bags, into small, short silk, smashing agricultural film, packaging bags, cloth and greenhouse series products, plastic crusher for crushing them, and cleaning, remove the dirt, impurities, so as to get clean effect of. This design makes in the domestic and international reputation, reasonable price line.

According to a recent months of observation results, Plastic Crusher already more and more get the trust of customers, more customers have to buy Plastic crusher. The crusher ‘s development is a good thing, so plastic crusher so popular a significant aspect is his and environmental protection are closely related, life has a lot of garbage, let you have a headache, so you have no place to pile up, and this product just to solve this problem, Plastic Mixer, ,Plastic Extrusion Machine and plastic crusher, is the good helper of environmental protection equipment.

And know the plastic crusher is the recycling of waste plastic granulator, one of the key equipment at home and abroad, at the same time, waste plastic crusher can meet the environmental requirements of plastic recycling. Dirty agricultural film waste, waste packaging material or hard plastic crusher where you can get a good deal of plastic. In addition, plastic crusher production lines are simple and effective, broken plastic functional plastic varieties, such as bags, into small, short silk, smashing agricultural film, packaging bags, cloth and greenhouse series products, plastic crusher for crushing them, and cleaning, remove the dirt, impurities, so as to get clean effect of. This design makes in the domestic and international reputation, reasonable price line.

In the past two or three years, China’s machine export up to several countries are Brazil, Indonesia, Turkey, Brazil, which is China’s plastics machinery products is the biggest export country, in China presses market position in the play a decisive role. But according to Chinese Customs released the latest statistics, this year 1-8 month our country presses total exports in the first state for Thailand, the export volume of 2010 units, exports amounted to $92895000. According to the General Administration of Customs on 2009, 2010, 2011 data, in recent years our country plastic molding equipment to export the biggest nation has been to Brazil, but this year 1-8 month exports of Brazil presses for the number 1621, exports amounted to $77285000, far less than in Thailand.

From the data it is not difficult to find, this year’s exports to Thailand are mainly machine type injection molding machine, export volume for 1270, amounted to 70332000 U.S. dollars, accounting for 1-8 inChina injection molding machine 11.5% of total exports, with 1-8 last year grew by 130.8% last year, but China injection molding machine for Thailand’s annual exports only $49626000. From the Taiwan Association of machinery industry released data can also be seen in the first half of this year, Taiwan exported to Thailand presses amount appeared substantially growth, become Taiwan after China ‘s second largest export market. In addition, in blow molding machine exports Thailand is located in China’s blow molding machine export market first, whereas in the Plastic Extrusion Machine, Plastic Mixer ,Plastic Crusher and other vacuum molding machine and molding machine, Thailand where the export category the proportion is not. Actually, since 2009, exports to Thailand injection molding machine has never been so substantially growth, this may and late July last year Thailand suffered the flood related.

First of all, flooding in Thailand large presses destroyed, Japan Sumitomo supply to Thailand presses in 40% to 50% in the flood damage, and Toshiba machinery customers in Thailand also require replacement, but as a result of damage assessment procedures and other reasons, this part of the product ‘s replacement at the end of last year began the first half of this year, so a large number of exported to Thailand products is to supplement the flood damaged equipment, according to the Taiwan injection molding machine supplier FCS revealed, is a Thailand company in order to update the abandoned equipment, one-time order of 300 machines.

Secondly, due to the influence of flood, Thailand many local enterprises were forced to stop production, including plastic machinery enterprises, so in the meantime Thailand plastic supply mainly rely on imports. According to Toshiba mechanism that, in response to the Thailand flood affected customer demand, the company began in December last year to increase its Shanghai plant in China production, increase production rate of 20%, almost reached the factory limited.

Once again, Thailand post-disaster reconstruction and economic comprehensive recovery process greatly stimulated the local demand, according to the report, the first half of 2012 to pull move Thailand economy growth impetus came mainly from the rehabilitation of the affected fixed assets of private consumption, which also led the machine equipment imports.

From our country this year for Thailand machine export situation, due to flood the stimulation of demand did not end in the first half of this year, 7, August exports to Thailand injection molding machine amount still is located in the first. Thailand local plastic equipment to strong demand and increasingly mature investment environment also makes Thailand become the machine enterprises to set up production base of a popular choice, Japanese Toshiba machinery is in early last year had been planned in Thailand to build the new factory, and in June this year, Japanese injection molding machine manufacturer NISSEI also issued a statement, planned for next March in the new Thailand plant put into operation, in three years this factory output will amount to 360. The Japanese press association said, the future of the Japan machine industry investment focus will shift to Southeast Asia, while Thailand is a good choice, can be offset in China production cost rising pressure. The present situation, the Thailand disaster on presses the powerful demand will continue for a long time, and the future of the enterprises in the machine, to invest and build factories may to our country presses on the Thai exports causes certain impact.

Each plastic products production and processing enterprises. Especially in color printing plastic composite packaging film production consisting mainly of plastic manufacturers, each senior technical management personnel, must be very aware of my enterprise product raw material, processing technology, extrusion equipment performance, quality control, productivity, production cost some important factors such as reduced.

One, a full understanding ofPlastic Extruder screw design requirements

Each of the extrusion composite film manufacturers, in the use of their own extruder, first of all need to be fully aware of all the important related to the number of screw. We know that the screw extruder design is very important ( such as Twin Screw Extruder, screw rod extruder ), even if the purchase of a new screw, also be sure to buy one extruder screw design, conforms to the shape you want, function, material and the high speed operation of the screw. For example, only need to purchase a used for extrusion coating extrusion PE screw. You should know its material, heat treatment, thread and trend and screw must complete some functions, such as adding resin, continuous, uniform solution resin, stable liquid injected into homogeneous mixing resin and working cycle, the amount of material, material geometry, geometry and screw back pressure. There must be a group of display using the screw functions of various data and parameters. Because, in the computer world, simulation technique is easy and should be available to all screw were simulated, unless they got for the actual situation of the same material related data.

Because each root screw wear and screw design problems. One is worn screw is not necessarily a good screw, sometimes wear even for cylinder mixture advantageous, or in the pressure peak to increase production, to determine the location and cause of wear is advantageous. However, the actual needs is shown to wear in trouble, which for a given input interface, may mean a higher melt temperature. At the same time, we must master the screw design development, because at present by extrusion manufacturers the most popular is the universal screw, this to each manufacturer in the production of several raw materials, can be used.

In two, operation stability

For plastic manufacturers of conventional extruder. Usually will use the following problems: 1, improper control of technical conditions, as well as the motor load fluctuation will cause the extrusion temperature and pressure fluctuation, the effects of extrusion product quality. 2, with the increase of extrusion pressure, reverse flow and leakage flow will increase, making the whole extrusion flow rate decreased, while the screw pushing material, the power consumption is large, the shearing force on material is large, and energy consumption will increase. In 3, polymer blending modification, in order to make the extrudate has both temperature and pressure distribution, inevitable demand increases measuring length, but this will increase the screw processing difficulty and cost, and the residence time of material growth, is not conducive to the heat-sensitive materials processing.

In three, terminal pressure of screw elements

The end of screw in extruding pressure is very important, this pressure reflects the downstream portion of the screw all objects in the resistance, the filtering net and the adapter duct, and mold their own. It not only depends on the geometry of these components, but also dependent on the system ‘s temperature, which in turn affects the viscosity of the resin and the moving speed. Although it is not dependent on the screw design, but it affects temperature viscosity and throughput except when. On the security elements, each extruder temperature measurement is very important, if it is too high, die and mold may burst injury to the operator and the extruder. But the pressure on the machine barrel mixing is beneficial, especially in the measurement of screw. But too much pressure on the mean motor to output power, which caused the resin melt temperature is too high, but can be prescribed limit of pressure.

Four, die plastic melt residence time

All of the extruded plastic, they are extruded melt at the head, at the head of the residence time is plastic the die design is an important content in. In the process of extruding plastic material flow, residence time should be controlled in the relaxation time and thermal stability time, dwell time is too short, the die head expansion is relatively large, squeeze the products will have a greater residual stress, if too long, then the material will be heated and heat degradation effect for Sheet Production Line of products quality.

In five, the main motor and the cylinder is connected with the extruding relationship

All of the extruder, the main motor and the cylinder are opposites, and barrel machine and main motor are also in opposition. Why machine cylinder control effect, is not always as expected. Especially the temperature measurement area. If the machine heat cylinder, cylinder wall material layer viscosity decreases. The main motor in the more smooth barrel runtime needs less power. When the current to the motor decreases, conversely, if the cylinder barrel wall cooling, the melt viscosity increase, motor must be more force to rotate, then the current also increases.

At this moment, through the barrel to remove some of the heat is the main motor to. Usually feed simplified regulator on melt effect, this is what we expect. But any local effects are not local variables, then the best way is through the measurement of melt temperature to really understand the situation, in order to better take countermeasures.

Nowadays plastics demand and consumptive heat produced very big change, but the plastic machinery is still the major manufacturers and the vast number of consumers are most concerned about. China’s plastics machinery industry present the ability of independent innovation is low, high-grade and personalized less variety, industry concentration is low the problem, which is China ‘s plastics machinery industry nowadays can not catch up with as soon as possible foreign plastic machinery level important reason.

Although the Chinese plastics machinery market behind Europe, North America and Japan, but also have more than 10 enterprises begin to R & D and production of fully electric injection molding machine.

With the domestic plastic machinery enterprises continue to rise, more efficient and more energy-saving plastic machinery have also emerged, with the exception of foreign strong competitors, these domestic plastic machinery the actual strength of the enterprise also should not be underestimated.

Plastic machinery for a wide range of applications, including: packaging, agriculture, building, automobile and other fields. Because the plastic is light, can be recycled, low temperature forming, can have multiple functions, its use is more and more wide, amount is larger and larger, to plastic steel, plastic and wood to the development trend as well as like bamboo shoots after a spring rain, rise abruptly quickly. China machine industry development potential is very great, aftereffect is very full, especially in some high technology content, good performance, moderate price models, such as large, sophisticated, special injection molding machine, low temperature, high power type Twin Screw Extruder for production of high resistance, permeability and heat resistant packaging material and multi-layer coextrusion blow molding machine, the production of industrial products ( auto parts ) blow molding machinery, and Plastic Mixer ,Plastic Crusherand so on, have very good development prospect.

Plastic Extruder screw is one of the key components of the extrusion system, it not only plays a role in conveying plastic, while the plastic extrusion molding, plastics, difficulty also plays an important role, so the reasonable selection of the screw structure and parameters are obtained the ideal product quality and yield important link. Plastic extruder is a single screw extruder, Twin Screw Extruderand twin-screw extruder.

In order to meet the different needs of plastic processing, screw type are many, has the following kinds of common: graded ( like ), tapered ( such as deep not offset ), mutant, such as torpedo head.

Screw type selection is mainly based on the physical properties and the plastic extruder manufacturing technical specification to determine.

( 1) amorphous polymer softening is in a relatively wide temperature within a complete, general selection of isometric tapered screw. Crystalline polymer melt temperature range is narrow, generally used in isometric mutation screw.

( 2) in a small plastic extrusion machine, such as a 45 extruder screw is used like a full thread type, screw length to diameter is relatively small, mainly used for the extrusion of a small section of the insulating layer and the protective layer, extrusion speed.

( 3) using isometric and medium-sized screw thread depth gradient full thread type, its length to diameter ratio and small screw thread pitch is greater, equal, from the root from shallow to deep. Threaded end threaded deep roots, the thread is shallow, so the plastic extrusion amount, and does not affect the intensity of the screw of extrusion speed, plastics, plastics, is generally small and medium-sized Plastic Extrusion Machine production of insulating layer and the protective layer of the ideal screw.

( 4) a large screw diameter generally above150mm,φ 150,φ 200, such as a 250 extruder. Large screw adopts two types, one is like, such as aφ 150,φ 200 extruder; screw two is divided into three sections, namely the isometric and deep, like, not like, such as a 250 extruder, the compression ratio in 2 ~ 3, the ratio of length to diameter is about 15:1, mainly used in the production of a large section of the wire and cable insulation layer and the protective layer.

With plastic applications continue to expand, plastics processing equipment yield, precision, energy saving has become an important direction of market development. Process, outside the traditional host devices such as Plastic Extrusion Machine, ,Plastic Mixer ,Plastic Crusher injection machine, feeding system, dehumidification drying system, heating and cooling system, control system, traction winding system, the CD cutting systems, robotic systems are playing an increasingly important role in many areas, a process essential technical means.

Auxiliary equipment the rising importance of auxiliary equipment, especially in the production process in a variety of high-performance, high-precision, high-efficiency products play an integral role in the production process. Many areas, auxiliary equipment suppliers and the distinction of hosting provider is more and more difficult, the two sides are mutual penetration; auxiliary equipment enterprise technology, economic strength, began to host field development; host enterprise, also began in a number of supporting control system , it is important ancillary equipment to reinforce their own services and supporting capacity. And high-precision molding of high-performance plastic parts of the increasingly prominent role of auxiliary equipment. Auxiliary equipment suppliers has gradually become an important partner for many host companies to provide complete solutions for our customers.

In short, the application and development of auxiliary equipment has become an important part of the market for plastics processing. The plastic machinery development in these areas, largely thanks to the innovation of technology innovation and ideas.

With the network development, as well as the rise of the human concept of energy saving, the future, and how to achieve more effective energy conservation to become one of the various equipment manufacturers to develop new products are most concerned about the direction of technology. In addition to consider energy conservation in existing systems, and will also consider how the introduction of new processing technology to achieve high efficiency and energy saving, is also a large development direction.

In many cases, the host manufacturers with auxiliary equipment manufacturers demarcation has become increasingly blurred. Now, auxiliary equipment suppliers are not only the development of technology, to expand their product line and auxiliary equipment suppliers began to acquire a hosting provider, turnkey solution provider of evolution from the auxiliary equipment to processing. Future, this will also be the direction of the development of numerous auxiliary equipment production enterprises.

Plastic Machinery wide range of applications, including: packaging, agriculture, construction, automotive and other fields. Plastic light weight, recyclable, low-temperature molding, multi-functional, its use is more and more widely, increasing the amount of plastic and steel, plastic and wood trends just mushroomed, the rapid rise. China’s press industry has huge development potential, stamina is enough, especially high scientific and technological content, good performance, and relatively moderate prices, models, such as the large, sophisticated, special injection molding machine, low temperature, high-power Plastic Extruder， Twin Screw Extruder for the production of high resistance and permeability and heat-resistant packaging materials, production of industrial Plastic Mixer, there are good prospects for development.

Today, plastic demand and consumption of heat has undergone great changes, but the plastic machinery is still the major manufacturers and consumers of most concern. Capability of independent innovation of China’s plastics machinery industry currently exists, upscale and personalized special varieties of small, low degree of industry concentration, these plastic machinery industry in China today also important to catch up with the level of China Plastic Machinery reasons.

Despite China’s plastics machinery market is lagging behind in Europe, North America and Japan, but also has more than 10 companies began the development and production of all-electric injection molding machines.

With the continuous rise of the domestic plastics machinery businesses more efficient and energy-saving plastic machinery have also come to the fore, in addition to strong foreign competitors, the strength of these plastic machinery enterprises also began can not be underestimated.

The plastics processing industry is a highly comprehensive technology industry. Relates to polymer chemistry, polymer physics, the interface theory, plastic machinery, plastic processing mold design principle of formulation and process control etc.. Extrusion theory study mainly Plastic Extrusion Machine internal motion and variation. Extruder plastic to some external force, in different temperature range of polymer three physical state, and the structure of screw, plastic properties, processing conditions and the relationship between. Thus the reasonable process control. In order to improve the yield and quality of plastic products plastic polymer materials, constant pressure when heated, in different temperature ranges, appearance of glass state, high elastic state, flow three physical states. General plastic molding temperature above the temperature in viscous flow.

Extrusion molding process parameters include the temperature of the molding, plastic extrusion machine working pressure, Plastic Extrusion Machine ( such as the Twin Screw Extruder ), extrusion speed and traction speed, feed rate, cooling stereotypes. 1 : pretreatment of raw materials the polyolefin is non absorbent material, usually very low moisture content, can satisfy the need of extrusion, but when the polyolefin containing water absorbing pigment, such as carbon black, sensitive to humidity. In addition, the use of materials and filler, water content will increase. Water not only causes the tubing and rough appearance, but also may lead to bubbles in the melt. Usually respond to raw material pretreatment. Generally use the drying treatment, can also add the corresponding with dehumidification function additives. Such as defoaming agent. PE dry temperature is usually around 60-90 degrees. This temperature, the yield increased by 10%–25% 2 temperature control extrusion temperature is to promote the forming of plastics materials and plastic melt flow necessary condition. On the plastics materials and products quality and yield is very important. Plastic extrusion theory temperature window is viscous flow temperature and decomposition temperature between. For polyolefin for wide temperature range. Usually in a melting point above, below 280 degrees can be processed. To correctly control extrusion molding temperature, must understand the processed material bearing temperature limit and the physical properties of the relationship. To find out the characteristic and the rule, ability to select a preferred temperature range for extrusion molding. Therefore, these temperature setting should consider the following aspects: one is the polymer itself properties, such as melting point, molecular weight and distribution, melt index. Secondly, considering the equipment performance. Some equipment, feed temperature on the current of main section of great influence. Once again, through the observation of pipe die extrusion billet surface is smooth. There is no bubble phenomenon to judge.