The power consumption problem of four column hydraulic press has plagued many enterprises. We all know that the energy consumption of the oil pump should account for 97% of the total power consumption of the whole hydraulic machine, so the energy saving problem of the hydraulic press is very important if we want to solve the problem of the power consumption of the four column hydraulic press.
When the hydraulic press goes down quickly, or when the pressure is kept back, he will have a change of pressure and flow. If there is a different change in the oil demand of the calender, then we should use the overflow valve to adjust the flow and pressure, so that the output rate of the machine is constant, so that it will be the same. There is a lot of waste. After that, what should we do to save energy and reduce waste, the hydraulic press consists of a control circuit, a filter circuit, a rectifier circuit and a inverter circuit, so that his whole function is to turn the alternating current into DC by rectifying, and turn the inverter into a different frequency to make electricity. It can be conveyed to the motor, so that it can make good use of the frequency conversion speed regulating equipment. Then the ultimate goal of the energy saving of the hydraulic press is achieved.
It is a hot topic in today’s society that the power consumption of the hydraulic press is a very realistic problem. The above knowledge can teach you how to save electricity, reduce the cost of the company and improve the efficiency of the enterprise.
The method of solving the power consumption of hydraulic press
Longitudinal lathe, the proper assistant for precision axis machining
e conventional lathe depends on the movement of the tool to complete the turning of the redundant blank, but in the precision slender shaft processing, the conventional lathe is obviously unable to meet the processing needs, and the emergence of the lathe makes it possible to batch the precision axis.
In cutting the lathe, as the name implies, in metal cutting, the trajectory of the tool is perpendicular to the axis of the workpiece, that is, the workpiece is rotated and moved in turning, and the tool does not need to follow the workpiece. It is essentially different from the conventional lathe. The conventional lathe depends on the movement of the tool to complete the turning of the redundant blank, but in the precision slender shaft processing, the conventional lathe is obviously unable to meet the processing needs, and the emergence of the lathe makes it possible to batch the precision axis. The machine tool can also be called a CNC lathe, a spindle box mobile numerically controlled automatic lathe or an economical turn milling compound machine tool.
The use of the machine tool can be said to be quite extensive now. Compared with the conventional CNC machine tools, the main reason is that there are the outstanding advantages of the compound processing in the process of use, which can produce the most products in the shortest time, and the precision and quality of production. There are also safeguards. What advantages do processing and production of slitting machine bring?
In the process of use, the machine tool can greatly shorten the supply chain of the product manufacturing, so this represents the shortening of the processing time and improving the efficiency of the whole processing production. In the process of processing and production, it can also complete most of the processing procedures at once, not only to save the whole life. The time of production and processing is also greatly shortened for the auxiliary time of the production. The waiting time for processing is also reduced, the production efficiency is greatly improved, and the quality of the production will be better guaranteed.
The machine tool not only improves the machining accuracy, but also ensures that it is very safe and convenient in the process of operation, and any one of the staff can operate after a simple understanding. Moreover, the longitudinal cutting machine can not only improve the machining accuracy of the products, but also control the accuracy. Because of the good control of the machine tool, this will have better security for the operation, so in the process of selection, the machine can give him a better use of the experience.
By cutting machine tools, it can bring a lot of advantages to the processing and production, and can greatly reduce the cost of processing production. The input of artificial and production raw materials and the area of machine tools will be reduced, and the overall maintenance cost of equipment can be reduced. Therefore, the use of cutting machine tools can not only reduce the investment of fixed assets of enterprises, but also have better control on the cost of production and operation management. These advantages can bring better operating profit.
In recent years, with the rapid development of China’s economy and science and technology, the technology of cutting machine tools is also developing and innovating. At present, many areas, such as Guangdong, Liaoning, Shandong and Xi’an, have independent research and development equipment and technology. In the case of a large number of machine tool manufacturers in the market, the performance of various manufacturers is also varied, therefore, the user should pay special attention to the following points in the process of selecting and purchasing.
1, pay attention to check the configuration data of the machine tool: when we choose the machine tool, in addition to considering the price and the model, the data should be fully understood. After all, this directly affects the production quality of the equipment, so we still need to pay more attention to avoid the quality problems in production. .
2, fully understand the model and functional characteristics of all kinds of machine tool: now, there are many types of machine tool, and the performance is also varied. So, in addition to the needs of the machine tool, we should make a comprehensive understanding of the model and performance in addition to its own needs, so that it is not to be purchased. In the process of doing nothing.
3, suitable for yourself is the best: many manufacturers are not very aware of the machine tool, so the choice of the most expensive is the right choice when buying related equipment. What are the production requirements and details? Choose the most suitable equipment according to your actual requirements.
Matters needing attention for environmental biomass boiler
Precautions for environmental biomass boilers 1. the stoker must be familiar with the basic knowledge of the boiler, understand the technical features, technical parameters and system flow of the boiler, and be familiar with the boiler operation and debugging. 2. before the boiler is opened, the boiler water supply system, the heating system, the smoke exhaust system, the power equipment, the electric control disk and other main components are checked thoroughly, and the blowdown valve should be closed so that the boiler can be opened. 3. the operation of the boiler should be operated strictly in accordance with the design parameters, and the temperature should not be overheated, and the valve should not be installed on the connecting pipe to the atmosphere and the water supplement, so as to avoid the pressure of the boiler. 4. the system of all the sealing points and power equipment (fan, pipe pump) of the boiler in operation can be checked and maintained diligently, and the problems can be eliminated in time. 5. freezing prevention measures should be made in winter. During the shutdown, attention should be paid to releasing water to prevent the boiler from freezing. 6. during the operation of the boiler, the sewage is usually discharged once a day, which is deposited on the bottom of the boiler with waterproof and fouling sediment, affecting heat transfer and burning the boiler. 7. the users who use water exchangers generally do not consider the scale of the boiler in the body, and check the scale regularly according to the quality of the water. When there is scale, the heat exchanger should be opened and cleaned by the layer. Then one layer and one layer can be put well, and it can not be used. Otherwise, it can not be used. 8. in order to ensure the thermal efficiency of the boiler, the gray scale of the boiler cleaning door should be cleaned regularly, and the ash fouling in the furnace should be removed regularly (opening the middle belt of the furnace, exposing a small square hole, using the spiral tube of the pipe to aim up the pipe from the small hole, until the ash is cleaned and then the belt is good). The 9. operation, such as the discovery of water production (or heating), significantly reduced (1) bad ventilation and exhaust system: check whether the fan is reversed, the ventilation in the furnace body is good, the chimney, the dust pool is unimpeded and there is no leakage, it is found that the problem should be dealt with in time. (2) the scale (or scale of heat exchanger) in the furnace is too thick. 10. when the boiler is used for a long time, the water in the pipe network of the furnace must be released in winter to prevent freezing. In summer, the ash and scale in the boiler should be cleaned up, and the furnace should be kept full of water for humidification and maintenance. Dry lime blocks should be placed in the lower part of the furnace to prevent rusting and falling off.
Are you changed by real life?
Time flies year after year, in plain life, it is plain to say that it is plain. It is full of ups and downs, life twists and turns, and even life and death. In fact, I want to keep a quiet record of life, but more time to find an excuse for his laziness (no time) thirty years, youth has already disappeared in the lonely and quiet long space, at this time I gently hit the keyboard recollection of childhood.
I remember when I was young, I was envious of the older people, probably because I was looking forward to growing up, looking at their work, buying what they liked, and looking forward to the day when I was simple and naive. I didn’t remember any mobile phones, computers, and animated movies. I have to see it.
Day after day and year after year, from the beginning of the job to the present, I remember the first job was the first job because I was far away from home. At the age of twenty, I had the first job (a clerk) to get a salary of less than one thousand yuan a month. My own little day was very pleasant.
But people always want to grow up, people’s life is actually like a game, read it, understand that you are easy to pass the customs, do not understand, and are at a loss of self challenge, in the time of money manipulation, the reality of helplessness, people have to rush to work every day, people often say that the world is three, happen to be thirty This year I chose the business (machine tool accessories) this industry, although it is small white but still have a resolutely contact with the industry, although the time is not long, but I am very deep in the business feelings, although it is small but learned very well, it is easy to do, since the choice of their own favorite do not deal with many difficulties to do the best, there is a sentence How to say, if you want a dignitary before you, you must suffer from human suffering. You don’t pay for the admiration of others.
To this day, I still continue, the road is still so long, no matter what is waiting for me is bumpy or flat, I must insist, not afraid, although a person with my growing up with the maturity and sensibility, follow the years, silently walk, do every minute of the future.
The difference between the simulated screen and the digital screen
There is no difference between the analog screen and the digital screen itself. When driving, IC is used to drive the row and drive the digital signal.
First, there is no difference between the analog screen and the digital screen on the screen itself. The main difference is in the circuit. All the pixels added to the LCD screen are all digital signals. At the edge of the screen, there are many rows driving IC, the so-called driver. The circuit board behind the screen is mainly the controller, the controller converts the received signal to the drive signal that meets the timing requirements of the drive, and gives the driver the corresponding pixel.
Analog screen and digital screen are the same in this writing part, and their difference is mainly on input. The digital screen is directly input to the digital signal. Each color signal of the RGB is converted to a number of digital signals by the video processing circuit, which is directly sent to the control driver on the screen. The A/D conversion is completed in the previous circuit. The analog screen input is three primary color analog signal input, and its A/D conversion is completed on the LCD screen circuit.
Two, this problem has been said many times. The key difference is whether the input RGB signal is analog or digital. Point out one of your mistakes. The real input to the screen is a specific voltage value. The size of the voltage value determines the size of the liquid crystal deflection, which determines how much light is transmitted. It is considered that the drive screen needs a simulation signal, but it is absolutely not a digital signal (for RGB signals, of course the timing signal is a signal. ” If the input RGB is a simulation signal, such a screen is called a simulation screen, which is sampled within the DRIVER IC of the LCM, and then the sample is sent to the TFT. If the input RGB signal is digital, it is called a digital screen, and D/A conversion is required inside the DRIVER IC of LXM. This part of the work is completed by the GAMMA correction circuit.
(LCD true color shows the use of TFT LCD, active dot matrix display, the need to use the source drive (source driver) and the gate driver (gate driver) to control the source and gate of the LCD field effect transistor FET. The source driver receives the display data driven LCD column display, also known as the data driver (data driver), and the gate driver controls progressive scan.
Three, the input signal of the analog screen is a simulated RGB signal. In general, each line should be reversed with the previous line, and there should be a coordinated VCOM signal. The bias voltage below + 10V and below 10V is required. The vertical resolution is generally about 230; the input signal of the digital screen is divided into TTL and LVDS, and the red and green three colors are generally used in 6 to 8 figures. The number of words is expressed without external bias, and the vertical resolution is generally more than 400.
In fact, the digital screen and the analog screen are all driven by digital signals. Now the digital screen and the analog screen are distinguished from the interface of the LCD screen. The screen that can directly input the analog signal is the analog screen, and the digital signal is the digital screen. The analog screen has more A/D converters than the digital screen, which is used to convert analog signals into digital signals. The digital screen is displayed directly by the digital signal. The digital screen can be divided into TTL, LVDS and so on from its signal transmission mode.
How can we avoid the short life of the roller printing machine blankets?
The blankets of the roller printing machine affect the quality and effect of the transfer. The blanket, as an important component of the roller printing machine, is not the body of the diamond, usually the life of the blanket is about 2 years. However, due to improper operation of workers, blankets often become deformed, dirty, scorched or burned.
Then how can we avoid the short life of blankets?
(1) to extend the service life of blankets by constant temperature setting before blanking.
(2) when the machine is installed, special attention should be paid to the matters needing attention in the maintenance of the blankets and matters needing attention in the usual machine operation.
(3) in addition, we have developed a new automatic preheating and automatic shutdown function for this problem and the safe operation of machines.
(4) it is suggested that the customer factory be equipped with a master who specializes in the operation of the machine, usually responsible for the maintenance and care of the machine, finding problems and contacting the sales personnel.
What is the radial clearance of a linear guide
The radial radial clearance of the slide rail means that when the track is fixed, the central part of its length is moved, and the slider is moved up and down. At this point the central part of the slider moves in radial direction.
Radial clearance is generally divided into five kinds: ZF micro gap, Z0 zero prepressure, Z1 light prepressure, Z2 prepressure, Z3 heavy prepressure (at this time TBI prepressure expression, brand different, expression will be different, if there is a problem, please consult the Shenzhen ladder Italian Pml Precision Mechanism Ltd customer service). According to the choice of usage, all kinds of clearance values have been standardized.
The radial clearance of slide rail has obvious influence on operation accuracy, load bearing performance and rigidity, so it is very important to choose the gap properly according to the purpose. Generally considering the vibration and impact caused by reciprocating motion, the negative gap, service life and accuracy are all brought back to good effect.
The impression of the smell
Some invisible things, often in the heart of the heart left undetected marks, only in the years later, in some situations, suddenly touched, only awakened the memory of yesterday. For example, odour, at some moments, a familiar smell will lead to unforgettable things and people.
Just like some people smell some kind of smell, they will remember the food they made in their childhood, and remember the deep feeling of those years. When I was little, my grandfather was a carpenter, and he built all kinds of wooden products in the open space every day. When they entered the door, they smelled the sawdust. Different wood had different smells. They could not smell at ordinary times. When they fly in the sawdust, the smell went over the house. My grandfather was busy almost every day, and the smell of wood grew with me. Later, my grandfather died and my family moved to the county seat. The scent gradually faded away from life until it was forgotten.
One
Until more than 10 years later, I once occasionally passed a house and smelled the familiar sawdust. At that moment, I forgot to step, like a stream of steam coming from the depths of time, making me find the warm ocean I had lost. When he remembered the thatched cottage, he thought of the scattered wood in the house, and the grandfather who waved a hatchet saw. His hair was covered with tiny bits of sawdust. It seemed as if it was only in an instant. The original thought light, in fact, has been in the bottom of the heart. That afternoon, I stood at the door, watching the people in the house playing furniture, just as I watched my never coming childhood.
A man I know in a middle school in a remote town, as an old teacher, is suffering from a fatal illness. When he is dying, his family asks him what wishes he has. He says, just want to smell the smell of chalk. The family went to the shop to buy chalk, and he smiled and walked away in the familiar smell. Perhaps, at that moment, he just wanted to remember the times of the stage before the familiar smell, and finally to commemorate the white time that never came again. The long chalk flavor, dyed his hair, and made his life very clear.
In our lives, grass and flowers, ordinary fireworks, and that kind of smell may record a moving and yearning. There are always some flavors that imprint invisible imprints on our hearts. When we encounter them, they offer us an untimely beauty.
The application of etch technology to mould
ch technology
The technology of removing metal from the metal surface by means of erosion on the metal surface. This method is used on the surface of the metal
All kinds of patterns are called etching processing, and the mold industry is called etching processing, also called bitten flower processing or “corrosion processing”.
Flower roll _02
(1) electrolytic etching (electrolytic etching)
Using the mother mold as the conductive cathode, the electrolyte is used as the medium to carry out etching etching to the processing part.
(2) chemical etching (chemical etching)
Using the drug resistant coating, the etching erosion is removed and the action is concentrated on the desired parts.
Photo etching technology (photo-etching process) formed a uniform layer of optically active drug resistant coating on the metal surface.
(photo resist), and through the original film negative, exposure to ultraviolet light, after the imaging processing, to form the desired drug resistance.
The coating layer of the coating is then dissolved by the chemical or electrochemical erosion of the exposed part with the acid or lye of the etching bath.
The processing technology of the genus.
(3) characteristics of etch technology
1, do not need electrodes, master and other tools, so there is no need to maintain such tools.
2. From planning to production, the time needed is short, which can be used for short-term processing.
3, the physical and mechanical properties of materials are not affected by processing.
4, processing is not restricted by shape, area and weight.
5. The processing is not limited by the hardness and brittleness.
6. It is capable of processing all metals (iron, stainless steel, aluminum alloy, copper alloy, nickel alloy, titanium and alloy).
7. High precision machining.
8, complex, irregular and discontinuous design and processing can be applied.
9, large area, good processing efficiency, but small area, its efficiency is worse than machine processing.
10, the horizontal cutting is easy to get high precision, but the depth and vertical direction are not easy to get the same machining accuracy.
11, the composition of the processed products should be uniform, and it is not easy to process the heterogeneous materials.
Die Cutting Machine
The die cutting machine is also called the beer machine, cutting machine and numerical control punching machine. It is mainly used for the die cutting (all broken, half broken), indentation and hot stamping operation, fitting and automatic waste disposal of some corresponding non-metallic materials, dry glue, EVA, double side glue, electronic and mobile phone pads. The die cutting machine uses steel knife, hardware mould, steel wire (or steel plate engraving). A template that is applied to a certain shape by imposing a certain pressure on the imprint plate. It is an important equipment for the processing and forming of the post – press packaging.
The working principle of the 500D die cutting machine containing the conveyor belt [1] die cutting machine is to use the die cutting tool, steel knife, hardware mould, steel wire (or plate engraved by steel plate), and apply certain pressure by the press plate to cut the print or cardboard into a certain shape. If the whole product is pressed into a single graphic product, it is called die cutting; if it is called a indentation by using a steel wire to press out marks on the print or the groove left with a bending, if the two block of yin and Yang is used to heat the mold to a certain temperature, a pattern or typeface with a stereoscopic effect on the surface of the print is called a bronzing. If the fruit is replaced by a base material on another substrate, the other part of the product is called waste disposal; the above can be collectively referred to as die cutting technology.
Die cutting is the most commonly used process in packaging printing. It is a molding process which is used by the die cutting tool according to the design requirements of the product design. Under the action of pressure, the printed or other ring blanks are cut into the desired shape or cut. The indentation process is to use the pressure line knife or the press die to press the line marks on the sheet through the action of pressure, or to make the bending forming by the rolling line wheel in the predetermined position. Usually, the die cutting process is to combine the die cutting tool and the press knife in the same template and die cutting and indentation on the die cutting machine at the same time, for short, the die cutting. The main process of introducing the die cutting indentation in the process is: the upper plate, the adjusting pressure, the determination of the rules, the adhesive material of the base material, the test pressure die cutting, the formal die cutting, the clear waste, the finished product reeling, and the number of pieces.
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