News_News_Fuling Machine

Working principle of dryer

For example, the drying of wood before making wood mold and wood ware can prevent the deformation of products, and the drying of ceramic billet before calcination can prevent the cracking of finished products. In addition, after drying materials are also easy to transport and storage, such as the harvest of food dry to a wet content below, in order to prevent mildew. As natural drying can not meet the needs of production development, various mechanical drying machines are more and more widely used. The amount of water vapor in the compressed air is determined by the temperature of the compressed air: Lowering the temperature of the compressed air, while keeping the pressure of the compressed air basically constant, reduces the amount of water vapor in the compressed air, and the excess water vapor condenses into a liquid. Freeze dryer is to use this principle to use refrigeration technology to dry compressed air. Therefore, the cold drying machine has refrigeration system. The refrigeration system of freeze dryer belongs to compression refrigeration, composed of refrigeration compressor, condenser, evaporator, expansion valve and other four basic components. They are successively connected by pipes to form a closed system, in which the refrigerant constantly circulates, changes state and exchanges heat with compressed air and cooling medium. Compressed air dryer and adsorption dryer and dissolution dryer. The refrigeration compressor inhales the low pressure (low temperature) refrigerant in the evaporator into the compressor cylinder. The refrigerant steam is compressed, and the pressure and temperature rise at the same time. The high pressure and high temperature refrigerant steam is pressed to the condenser. In the condenser, the refrigerant steam with a higher temperature exchanges heat with the cooling water or air with a lower temperature. The heat of the refrigerant is taken away by the water or air and condensed, and the refrigerant steam becomes a liquid. This part of the liquid is transported to the expansion valve, through the expansion valve to choke into low temperature and low pressure liquid and into the evaporator; In the evaporator, the low temperature and low pressure refrigerant liquid absorbs the heat of the compressed air and vaporizes (commonly known as "evaporation"), and the compressed air is cooled and condenses a large amount of liquid water; The refrigerant steam in the evaporator is sucked away by the compressor, so that the refrigerant is compressed, condensed, throttled and evaporated in the system, thus completing a cycle. In the refrigeration system of freeze dryer, the evaporator is the equipment for conveying cold volume, in which the refrigerant absorbs the heat of compressed air to achieve the purpose of dehydration and drying. Compressor is the heart, playing the role of suction, compression, transport refrigerant steam. Condenser is a device that releases heat. It transfers the heat absorbed in the evaporator together with the heat converted by the input power of the compressor to the cooling medium (such as water or air) to take away. The expansion valve/throttle valve plays a role in throttling the refrigerant and reducing the pressure. At the same time, it controls and regulates the amount of refrigerant liquid flowing into the evaporator, and divides the system into two parts: the high pressure side and the low pressure side.

Click to see more 

The application of automatic control

 Time of issue:2022-12--21

Process automation Automatic control of chemical processing of fluid or powder in petroleum refining and chemical industry. Generally, the process control system composed of measuring instrument, regulator and computer is used to preferentially control the equipment such as heating furnace and rectifying tower or the whole factory. The main control methods are feedback control, feedforward control and priority control. Machinery manufacturing automation This is the result of the combination of mechanization, electrification and automatic control, and the object of processing is discrete workpiece. The early automation of machine manufacturing was the single machine automation of mechanical or electrical components or the simple automatic production line. After the 1960s, due to the application of electronic computers, CNC machine tools, machining centers, robots, computer aided design, computer aided manufacturing, automated warehouse and so on. A flexible manufacturing system (FMS) suitable for multi - variety and small - batch production is developed. The automatic workshop based on flexible manufacturing system, coupled with the automation of information management and production management, the factory automation control system using computer integrated manufacturing system (CIMS) appears. Management automation The automatic control of business management of people, finance, materials, production and office in factories or institutions is a comprehensive technology with information processing as the core, involving electronic computers, communication systems and control and other disciplines. The local area network (LAN) is generally used, which consists of several computers and various terminals with high speed processing ability of large amounts of information. Modern decision support system (DSS) has been developed on the basis of management information system to provide alternative solutions for senior managers to make decisions.

What are the cleaning methods of automatic glue filling machine?

 Time of issue:2022-12--21

1. If the filled product is always the same glue, do not change the glue in the middle. In the middle, because the product is not supplied, so the glue is not used up and needs to be shelved for a few days. In these cases, cleaning is very simple. If there is automatic cleaning function, open the cleaning valve, click the automatic cleaning button in the operating system, the machine will finish the cleaning work automatically; If there is no automatic cleaning function, you only need to remove the dynamic mixing tube on the double liquid automatic gluing machine, and put it in alcohol or cleaning agent to clean it. Some customers ask, if not cleaned, will other places get clogged? This will not happen, because the double liquid automatic glue filling machine, A glue, B glue is separate, AB glue will only be cured after contact. Double liquid automatic glue filling machine, glue from A cylinder, B cylinder out, and then through the motor high-speed rotation to drive the impeller in the mixing tube to cut and mix AB glue, so the contact part is only in the mixing tube, other places do not contact. All the glue will not solidify and block the pipeline. The double liquid automatic glue filling machine has very good sealing and pressure preservation function. So if you do not fill glue in the middle, the machine is placed there, it will not contact with the air, there will not be chemical reactions, and it will be used for a few days. In general, there is no problem. 2, if you want to change the glue, or the glue in the machine is not used up, the next batch of products will not be used until more than half a month, you should clean them all, because mixing different glue will cause a series of problems, such as glue poisoning. If there is a one-key priority cleaning function, the operation is relatively simple, press the cleaning key, the machine will complete automatically. If the double liquid automatic glue filling machine does not have a key cleaning function, the unused glue will be drained when cleaning, and then the organic solvent, such as Dayna water, industrial alcohol, etc. into the machine; The organic solvent is then pressed out with glue and blown open with an air gun. With this type of machine, cleaning is very necessary, otherwise, for a long time, the glue curing in the glue valve, or in the barrel is very troublesome, maybe some parts will be replaced. So after each use, remember to wash.

What are the common failure causes and treatment methods of glue filling machine?

 Time of issue:2022-12--21

Common failure causes and treatment methods of glue filling machine: First, the mixing head is not glue. Fault cause and treatment: 1. It may be that the glue filling machine is not connected to the air source, resulting in the pneumatic valve can not be opened, so check whether the air source is connected, and determine that the glue filling machine has ventilation. 2. After confirming ventilation, see whether the cylinder of the mixing head can be opened? Manually loosen the cylinder locking screw. 3. Check whether there are still raw materials in the raw material bucket. If not, add glue. 4. Check whether the material pipe mixing and other components are blocked, if blocked, manually dredge the pipeline. Two, A, B metering pump alarm. Fault cause and treatment: 1. If the material pipe is blocked and the pressure of the material pipe is too large, the system will automatically alarm and prompt us to replace the pipe at this time. 2. The mixing head cylinder is not opened, and the glue can not be produced. There will also be an alarm warning, and the mixing head needs to be checked. 3. The line of the servo motor encoder is in bad contact or disconnected, check the line or disconnected and reconnect. Three, the amount of glue is not allowed. Fault cause and treatment: 1. Too little spare material in the barrel will lead to incorrect amount of glue, so glue needs to be added. 2. The inlet of A and B metering pumps is blocked. It is necessary to check and clean the filter screen in front of the metering pump. 3. The parameters of A and B metering pumps are modified artificially, so it is necessary to test and set the parameters again. Four, the mixing head does not stir. Fault cause and treatment: 1. Check whether the stirring blade is broken, and replace it with a new one. 2. If the steel hook above the mixing leaf falls off, it will also cause no mixing. Check and hang it up. 3. If it is a dynamic mixing head, it is also necessary to check whether the stirring motor runs normally, whether the line is disconnected, and whether the controller works normally. Five, mixed head alarm. Fault cause and treatment: 1. First, check whether the hook on the mixing leaf is glued to death, resulting in the failure of rotation. Rotate the hook by hand, if it does not move, disassemble and clean it up. 2. If the code line is in poor contact, check the line or disconnect and reconnect.

Principle and advantage of carbon fiber autoclave forming technology

 Time of issue:2022-12--21

Carbon fiber is a new generation of reinforced fiber, compared with the traditional glass fiber, Young's modulus of carbon fiber is more than 3 times of glass fiber, compared with Kevlar fiber, Young's modulus is more than 2 times, and in strong acid and alkali and organic solvent insoluble does not expand, corrosion resistance is outstanding, will not appear rust problems. Compared with steel, titanium and other metal materials, carbon fiber has the advantages of low density, small expansion coefficient, high strength and other physical properties, in the automotive industry, aerospace, sporting goods and other fields have outstanding performance. At present, the mainstream forming technologies of carbon fiber include fiber winding forming technology, braided forming technology, double mold forming technology, and autoclave forming technology. Fiber winding forming technology is an early continuous forming process, which is characterized by the ability to arrange carbon fiber according to the stress of the product, so as to give play to the strength of carbon fiber. The carbon fiber material with braided forming technology is better than the traditional laminate composite two-mode forming technology in terms of impact damage resistance and shear strength. The prepreg is placed between metal film or resin film to seal and cool down.

Precautions for using automatic glue dropper

 Time of issue:2022-12--21

1. Pay attention to the needle size of the glue dropping machine In practice, the inner diameter of the needle of the automatic glue drip machine should be the proportion of the diameter of the glue point. In the dispensing process, the dispensing needle should be selected according to the size of the pad. If the size of the pad is not very different, then the same type of needle can be selected, but for the welding pad with a relatively large difference, different types of needle need to be selected, which can not only ensure the quality of the glue point of the automatic glue dropping machine, but also improve the production efficiency. 2. Pay attention to the glue temperature The epoxy resin glue used by the general automatic glue drip machine should be stored in the refrigerator, and used in advance should be taken out for reserve, so as to make the glue fully consistent with the working temperature. And the ambient temperature has a great impact on the viscosity of the glue. If the temperature is too low, the glue point will become smaller, resulting in the phenomenon of wire drawing. Therefore, the ambient temperature should be controlled, and the ambient temperature should also be guaranteed to avoid the occurrence of glue humidity is too small glue point dry, and affect the bonding force. 3. Pay attention to the dispensing pressure In the use of automatic glue drop machine can be based on the same quality of glue, working environment temperature to choose the right pressure. Too much back pressure is easy to cause glue overflow and other conditions; But if the pressure is too small, the phenomenon of intermittent glue will occur, leakage point, resulting in defects. When the ambient temperature is high, it will make the glue viscosity smaller and the fluidity better, which requires timely lowering the back pressure of the automatic glue dropping machine to ensure the supply of glue, and vice versa. Matter of intention

Working principle of dryer

The application of automatic control

What are the cleaning methods of automatic glue filling machine?

What are the common failure causes and treatment methods of glue filling machine?

Principle and advantage of carbon fiber autoclave forming technology

Precautions for using automatic glue dropper

Contact us