The rubber extruder barrel is normally supported in some way by the frame on which the whole system is mounted. If the extruder barrel moves, and this can happen sometimes even when the barrel is supported, it can indicate that the extruder shaft is bent, the barrel is misaligned, or a combination of extruder configuration and recipe characteristics result in a product mass that is not fluid or flowable inside the barrel. Bent shafts will cause the end of the extruder barrel to move in an eccentric fashion and this can be corrected by straightening the shaft or, in some severe cases, replacing the shaft. Proper alignment of the extruder barrel sections around the shaft will also reduce this movement. Barrel alignment techniques should be taught by a qualified service engineer experienced in the maintenance of the system. Some recipes do not lose viscosity during the heating/hydrating processing steps normally present in a cooking extrusion environment. This fact, coupled with a configuration that utilizes a screw profile that may become unbalanced when extruding at certain operating parameters, can result in the extruder barrel moving in an eccentric motion. If operation of an extruder that has severe eccentric movement in the barrel continues, fatigue may result in the shaft and barrel components which may pilot to costly repairs and unscheduled down time.

Twin screw rubber extruder machine has three different extrusion systems: 　　1, non-intermeshing co-rotating twin screw extrusion system 　　 In the non-intermeshing twin-screw extrusion system, in addition to the movement form towards the machine head, there are also many flow modes for the material. Since the two screws are not meshed, the radial gap between them is large, and there is a large leakage flow. 　　2, intermeshing counter-rotating twin screw extrusion system 　　 The movement of the material in the intermeshing counter-rotating twin-screw extrusion system. 　　In order to make the material mixing design, leave a certain amount of clearance between the outer diameter of one screw and the root diameter of the other screw, so that the material can pass through. When the material passes through the radial gap between the two screws, it is subjected to strong shearing, stirring and calendering. Therefore, the plasticization of the material is better and it is lots ofly used for processing products. 　　3, intermeshing twin screw extrusion system 　　 The flow of materials in the full thread section of the twin-screw extrusion system rotating in the same direction. Because the speed direction of the co-rotating twin screws at the meshing position is opposite, one screw must pull the material into the meshing gap, while the other screw must push the material out of the gap, resulting in the material from one screw to another. The change of this speed and the larger relative speed in the meshing zone are very conducive to material mixing and homogenization. Twin screw rubber extruder The extrusion process of twin screw rubber extruder: The extrusion process of twin screw rubber extruder includes feeding section, melting section, melt conveying section, mixing section, air exhaust section, homogenization section, vacuum exhaust section and metering section. 　　In the melt conveying section, additives can also be added. Of course, not every extrusion process must include these stages, some have more and some have less, but basically include these stages. Twin screw rubber extruder 　　 How to combine the screws of the twin-screw rubber extruder: The screw of twin screw extruder is a modular combination method. The combination of the entire screw should be selected according to the specific formula, material characteristics, mixing requirements, and operating conditions. 　　It is necessary to determine the total length of the screw consists of several sections. The so-called sections can be divided by the feeding port and the exhaust port. If there is only one feeding port and no second feeding port or exhaust port, it can be regarded as a section. 　　 If there are two feeding ports or one exhaust port and one feeding port, it is regarded as two stages, and so on. How many stages are used depends on the requirements of the mixing process.

Many types of rubber extruder machine are used in the food industries and several designs are possible for a food extruder. The lots of commonly used extruder consists of the flighted screw(s) or worm(s) rotating within a sleeve or barrel to be termed as the screw extruder. However, the piston type extruders are possible though they are used in other type of industries. The flights on the screw push the plasticized material forward and discharge through an opening or the die. The details on the different type of extruders and their components are available. A variety of extruders have been developed to manufacture different types of food products. On the basis of the number of the screw, extruders can be classified as a single-screw or twin-screw extruders. The twin-screw extruder is partially developed on the experience and the knowledge derived from the understanding of single-screw extrusion cooking. A conventional single-screw extruder usually has three sections: feed, transition, and metering zones. The extrusion screws sequentially convey the incoming feed in the feed section, and heats the feed to form a continuous plasticized mass (in transition and metering sections), while rotating in the barrel. The screw can be designed either as a single piece or as several small segments. Twin-screw systems are costlier and more complex than the single-screw extruders. However, the twin-screw extruders are preferred by food industries due to improved mixing abilities, uniform temperature distribution features, facility to control the feed residence time, and enhanced positive displacement capacity. The twin-screw extruders, on the basis of rotation, can be categorized as counter-rotating and corotating twin-screw extruders. The food industries prefer fully-intermeshing corotating twin-screw extruders because of several technological features, particularly, the better control of machine and product, and the efficient operation during extrusion cooking.

The rubber extruder play an important role in the production of rubber products. Many of our common rubber products are extruded by rubber extruders. When we purchase a rubber extruder, we must choose the configuration and model of the rubber extruder according to the type of product. When we purchase rubber extruders, we need to evaluate the price of the equipment according to the configuration of the equipment, because the prices of rubber extruders with different models and configurations are different. For example, the price of a 90-type rubber extruder ranges from several thousand yuan per unit to several hundred thousand yuan per unit. Because of the different uses, the configuration requirements of the equipment used in the production of the product are also different. In this case, The production cost of the equipment will be different, which will cause the price of the equipment to be different. There are many factors that affect the price of rubber extruders. In addition to the direct factor of equipment configuration, the additional price of the equipment brand, the consumption level of the equipment manufacturer, and the market share of the equipment will all affect the price of the equipment. When we purchase rubber extruders, we should not blindly pursue the price of the equipment. We need to comprehensively consider the strength of the equipment manufacturer, because we will be the chairman of the follow-up service, after-sales and accessory supply after we purchase the equipment. Time to deal with equipment manufacturers. So we must consider many aspects when purchasing rubber extruders

Composition, in the rubber extruder machine, in general, the lots of basic and lots of common is a single screw extruder. It mainly includes six parts: transmission, feeding device, barrel, screw, head and die. Transmission part The transmission part is usually composed of a motor, a reduction box and a bearing. During the extrusion process, the screw speed must be stable and cannot change with the change of the screw load, so as to maintain the uniform quality of the products obtained. However, in different occasions, the screw must be variable speed to achieve the requirement that a piece of equipment can extrude different plastics or different products. Therefore, this part generally uses AC commutator motors, DC motors and other devices to achieve stepless speed change. Generally, the screw speed is 10-100 rpm. The function of the transmission system is to drive the screw and supply the torque and speed required by the screw in the extrusion process. It is usually composed of a motor, a reducer and a bearing. On the premise that the structure is basically the same, the manufacturing cost of the reducer is roughly proportional to its outer size and weight. Because of the large shape and weight of the reducer, it means that a lot of materials are consumed during manufacturing, and the bearings used are also relatively large, which increases the manufacturing cost. For extruders with the same screw diameter, high-speed and high-efficiency extruders consume more energy than conventional extruders. The motor power is doubled, and it is necessary to increase the frame size of the reducer accordingly. But high screw speed means low reduction ratio. For the reducer of the same size, the gear modulus of the low reduction ratio is increased compared with the large reduction ratio, and the load bearing capacity of the reducer is also increased. Therefore, the increase in volume and weight of the reducer is not linearly proportional to the increase in motor power. If you use the extrusion volume as the denominator and divide it by the weight of the reducer, the number of high-speed and efficient extruders is smaller, and the number of ordinary extruders is larger. In terms of unit output, the low motor power of the high-speed and high-efficiency extruder and the small weight of the reducer mean that the unit-output machine manufacturing cost of the high-speed and high-efficiency extruder is lower than that of the ordinary extruder. Feeding device Generally, pellets are generally used for feeding, but strips or powders can also be used. The charging equipment usually uses a conical hopper, whose volume is required to provide at least one hour of consumption. There is a cutting device at the bottom of the hopper to adjust and cut off the material flow. The side of the hopper is equipped with a sight hole and a calibration metering device. Some hoppers may also be equipped with pressure reducing devices or heating devices to prevent the raw materials from absorbing moisture from the air, or some barrels also have their own agitators, which can automatically feed or feed materials. 1. Hopper The hopper is generally symmetrical. There is a window on the side of the hopper to observe the material level and feeding situation, and the bottom of the hopper has an opening and closing door to stop and adjust the feeding amount. A cover is added above the hopper to prevent dust, moisture and impurities from falling into it. When choosing hopper materials, it is ideal to use lightweight, corrosion-resistant and easy-to-process materials. Generally, aluminum and stainless steel plates are used. The volume of the hopper depends on the size of the extruder and the feeding method. Generally, the extrusion capacity of the extruder is 1～1.5h. 2. Loading There are two kinds of feeding methods: manual feeding and automatic feeding. Automatic feeding mainly includes spring feeding, blast feeding, vacuum feeding, and conveyor belt conveying feeding. Under normal circumstances, manual feeding is used for small extruders and automatic feeding for large extruders. 3. Classification of feeding methods ① Gravity feeding: Principle-The material enters the barrel by its own weight, including manual feeding, spring feeding, and blast feeding. Features-simple structure and low cost. But it is easy to cause uneven feeding, which affects the quality of the parts. It is only suitable for small extruders. ② Mandatory feeding: Principle-Install a device that can apply external pressure to the material in the hopper to force the material into the extruder barrel. Features-It can overcome the phenomenon of "bridging" and make the feeding uniform. The feeding screw is driven by the screw of the extruder through the transmission chain, so that its speed is compatible with the speed of the screw. The overload protection device can be activated when the feeding port is blocked, thereby avoiding damage to the feeding device.

In the production of rubber products, an indispensable equipment is the rubber extruder. Therefore, if you are a rubber manufacturing company, it is necessary to purchase such a piece of equipment, and its price has naturally become a frequent concern for many users Focus on the topic, in fact, the price of the equipment does not have a unified standard, it needs to be determined in conjunction with the quality, model, and configuration of the equipment. In many cases, the configuration of a piece of equipment is directly related to the price. When we produce rubber products, we should choose a rubber extruder suitable for our products. As for its price, it is often affected by many factors. The requirements of the extruder are different. For example, some products have relatively low equipment requirements, so you can choose a rubber preformed rubber extruder with a lower price. 　　 Another factor that affects prices is geographic environment. Manufacturers in different regions have different labor costs for equipment production. Generally, the labor cost in developed eastern regions is high, and the price of equipment will increase accordingly. There is another factor that will affect the price of rubber extruders, and that is the service provided by the manufacturer. A well-known brand manufacturer will have strong strength and can provide complete after-sales service and technical support, so that customers can purchase the equipment No need to worry about future installation and maintenance. 　　 Therefore, it is difficult to give an accurate figure for the price of a rubber extruder. Many factors affect the price of the equipment. Users need to comprehensively consider many aspects when selecting.

The rubber extruder machine mainly plays the role of extrusion molding in the production of rubber products, that is to say, the rubber extruder processes the banburying and smelting rubber and then extrudes it into the product shape we need. Produced the production of the product. The feeding system of cold-feed rubber extruder is common to use side pressure roller to forcibly convey the processed rubber to the screw barrel for feeding, so as to ensure the supply of raw materials during the working process of the rubber extruder. However, some rubbers are special, such as butyl rubber, which is softer and more viscous. If this rubber is used in traditional feeding methods, it will cause rubber to stick to the transmission bearing and cause damage to the rubber extruder. Therefore, when we produce butyl rubber, we lots ofly use rubber equipment specially designed for butyl rubber. Lost butyl rubber extruders are equipped with double-wrist conjugate feeding seats to feed the rubber in a bite manner to achieve the effect of feeding. Butyl rubber is forced to eat the rubber into the barrel through the double-wrist conjugate feeding system. After that, it will be sheared, mixed and compressed by the screw in the barrel. Finally, the rubber The die of the extruder is extruded into the product shape we need. The rubber extruder is extruded in this way.

1. Barrel 　　The barrel cooperates with the screw during work, so that the rubber material is subject to the interaction of the inner wall of the barrel and the rotating screw to ensure that the rubber material moves and mixes under pressure. Usually it also plays a role in heat exchange. 2. Screw 　　The screw is the main working part of the extruder. It generates enough pressure during work to make the rubber material overcome the flow resistance and be extruded, and at the same time plasticize, mix and compress the rubber material, so as to obtain a dense and uniform semi-finished product. 3. Nose 　　The machine head has different functions and structures for different extrusion processes (such as pressing, filtering, mixing, granulating, etc.). For the die of the pressure extruder, its main function is to make the rubber material change from spiral motion to linear motion; make the rubber material in the barrel generate the necessary extrusion pressure before extruding to ensure extrusion The semi-finished product is dense; the rubber material is further plasticized uniformly; the extruded semi-finished product is formed. If you have interests about rubber extruder machine, welcome to contact us!

　　 Silicone extruder 　　 is used for the extrusion of silicone materials. It is a basic equipment in the silicone industry and plays a very important role in the fields of silicone products and LED light strips. It is mainly composed of power motor, reduction box, speed controller, feed port, extrusion screw, extruder head, and is widely used in silicone tube strip, silicone sealing ring sealing strip, LED sleeve, flexible light strip, etc. 　　 Rubber Extruder 　　 is a basic equipment in the rubber industry and one of the key equipment that affects product quality. The rubber extruder machine plays a very important role in the production process of tires and rubber products. Widely used in automobile tires, automobile water retaining strips, rubber sealing ring strips, door and window wind strips, etc.

We know that rubber extruder machine plays a role in extrusion molding in the production of rubber products, and many rubber products will use rubber extruders for extrusion production. However, it is not to say that the design requirements of all rubber extruders are the same. When choosing a rubber extruder, we must choose the type and model of the extruder equipment according to the requirements for the equipment configuration when the product is produced. can. Because different products use different equipment configurations during production, the production cost of the equipment used during production is also different. We must choose the type of rubber extruder based on the actual situation of the product to make an inquiry. . When choosing a rubber extruder, it is necessary to locate and select the configuration function of the equipment, because the cost of equipment of different models and configurations is very different, we must compare each manufacturer before purchasing the equipment to let them Make us a feasible plan for product production. This should include a series of parameters such as equipment configuration, model, function, etc. We compare the data given to us by various manufacturers, and then choose the equipment that is lots of suitable for our own product production. In addition to the configuration of the equipment, the factors that affect the price of the equipment have a great influence on the brand of the equipment. Different manufacturers have different attitudes towards the follow-up service of the equipment. When we purchase equipment, we have to consider various factors in many ways. It is not that the lower the price of the extruder, the better. We have to consider the cost-effectiveness of the equipment. So when we choose a rubber extruder, we must choose a manufacturer with strong technical strength to cooperate.

The screw is the heart of the rubber extruder machine and the key component of the extruder. The performance of the screw determines the productivity, plasticizing quality, dispersion of additives, melt temperature, power consumption, etc. of an extruder. . It is the lots of important part of the extruder, and it can directly affect the scope of application and production efficiency of the extruder. Through the rotation of the screw to produce pressure on the plastic, the plastic can move, pressurize, and obtain part of the heat from the friction in the barrel. The plastic is mixed and plasticized during the movement of the barrel, viscous fluid state When the melt is extruded and flows through the die, it obtains the desired shape and is formed. Like the barrel, the screw is also made of a high-strength, heat-resistant and corrosion-resistant alloy. As there are many types of plastics, their properties are also different. Therefore, in actual operation, in order to adapt to different plastic processing needs, the types of screws required are different, and the structure is also different. In order to maximize the efficiency of plastic transportation, extrusion, mixing and plasticization. The basic parameters that express the characteristics of the screw include the following: diameter, aspect ratio, compression ratio, pitch, groove depth, helix angle, screw and barrel gap, etc.

In the rubber extruder machine, the extruder is usually called the main machine, and the subsequent equipment that is matched with the extruder is called the auxiliary machine. The extruder (host) can be matched with various plastic molding auxiliary machines such as pipe, film, holding material, monofilament, flat wire, packing belt, extruded net, board (sheet) material, profiled material, pelletizing, cable coating, etc. , To form various plastic extrusion molding production lines to produce various plastic products.The general operation steps of extruder debugging are as follows:1. Before starting the machine, check whether the temperature control is sensitive, whether the instrument is malfunctioning, whether the cooling water circuit is unblocked, etc. Usually use thermometer, cooling water and other methods for testing.2. Heat the screw, barrel and die head of the extruder according to the operating procedures of the extruder. After the temperature rises to the set temperature, it must be kept warm for about 10 minutes before it can be turned on, so that the temperature of each part of the machine becomes stable. .3. Be sure to tighten the connecting screws and bolts of each part of the die while it is hot before starting the machine. Before the material is extruded, the operator must not stand in front of the die to prevent the bolt or screw from breaking and causing injury.4. When starting to extrude, the screw speed should be slow, and then gradually increase to prevent overloading and damage to the machine parts when starting.5. When starting up, add a small amount of material , and keep the feeding balance, pay close attention to various meter values ​​such as torque when feeding, and wait for the material to be extruded from the die and pull the traction equipment, then gradually increase the amount of material until normal Squeeze out.6. When starting traction, there should be a certain distance between the shaping die and the die head to facilitate the traction. Open the waterway (be careful not to pour water into the die head, otherwise it will cause the die head to discharge abnormally and cause the material to break or block the die), the shape is complex, the cavity is small, and the cover of the molding die needs to be opened ; After confirming that the extruded material is plasticized normally, pull the material to the tractor through the traction rope that has been set. Shorten the distance between the sizing table and the die, cover the cover, and start the vacuum pump. When the extrusion speed and traction speed are basically balanced, observe the profile to be extruded normally, and then shrink the distance between the sizing table and the die to the ideal value.7. If it is found that the parison is not formed at the entrance end of the shaping die or the inner ribs adhere to the cavity surface of the profile, a pointed tool can be used to poke several small holes in the unformed part or inner ribs of the section of the shaping die. , So that the small cavity is connected to the atmosphere, the parison is open when it enters the setting mold, which facilitates the formation of negative pressure, and promotes the parison to tightly adhere to the mold wall of the setting mold.8. In case of mold blockage (not blocked), the setting table should be moved back immediately or the traction speed should be increased, or the above two schemes should be implemented at the same time, and then the process should be adjusted to resume normal production. If it is blocked and the implementation of the above scheme is invalid, the shaping table should be moved back immediately, and the material should be shoveled along the shaping mold, the water vapor of the shaping mold should be closed, the traction speed should be reduced, and the profile should be slowly pulled out from the shaping mold. If part of the profile is broken in the shaping mold, it is necessary to disassemble the shaping mold and completely remove the remaining material.9. When the machine is shut down, it is generally necessary to add the shut-down material to squeeze out the production material in the machine, and then shut down and remove the die head while it is hot for mold cleaning.