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Why do some people say that the machinery industry is not good

Do we often have machines that do not always work well? What do you think after hearing it? I have a shop owner in the same industry. I often say that the machinery industry is not ready to do business. He saw people selling sports equipment to make money, and then he began to invest in sports equipment business for a year, because he did not understand and do business, a year down to lose more than ten thousand. I also heard that the profit of the chip chain board was very high, and began to invest hundreds of thousands of dollars on the mold rental plant for several years. Like his friend said, you picked up sesame and lost the watermelon. The mountain looked at the high mountain.
In fact, which industry has done well and bad, but one rule is to persist in doing hard work. Heaven will not throw away the pie, you will pay how much.

Loader classification

Commonly used single bucket loaders are classified according to engine power, transmission form, walking system structure and loading mode.
1. Engine power:
(1) the power is less than 74kw as a small loader.
2. The power in 74~147kw is a medium loader
(3) power in 147~515kw for large loader
4. Power more than 515kw is a special large loader
2. Transmission form:
(1) hydraulic mechanical drive, small impact vibration, long lifespan, convenient operation, automatic adjustment between speed and load, generally used in large and medium loaders.
2. Hydraulic transmission: stepless speed regulation and easy operation, but it has poor startup ability. Generally, it is only used on small loaders.
(3) electric drive: stepless speed regulation, reliable operation, simple maintenance and high cost. It is generally adopted on large loaders.
3. Walking structure:
(1) tire type: light weight, fast speed, flexibility, high efficiency, no damage to road surface, high ground pressure and poor pass through, but widely used.
Crawler type: the ground specific pressure is small, through good sex, low center of gravity, good stability, strong adhesion, great traction, high ratio of cutting force, low speed, low flexibility, high cost, easy to damage the road when walking.
4. Loading and unloading methods:
1. Front unloading type: simple structure, reliable operation and good view. It is suitable for various operation fields and has wide application.
(2) rotary type: the working device is installed on a turntable with a rotation of 360 degrees. The side unloading does not need to adjust the head, the operation efficiency is high, but the structure is complex, the quality is large, the cost is high, and the side stability is poor. It is suitable for the smaller field.
3. After discharge type: front end loading, rear end unloading, high efficiency and safety of operation.

Hardware fastener

1. metal fastener:
(1) functional points: square buckle / day buckle / movable day buckle / ring / oval ring / hook (rotary and non rotating) / belt buckle and other special purpose fasteners.
(2) according to electroplating methods: the same metal drawing.
(3) the specification of the fastener depends mainly on its width / height and line diameter. The special fastener should refer to the manufacturer’s catalogue, and the different manufacturers will also have different products because of their different products.
2. plastic buckles:
(1) according to function: day buckle / square buckle / ladder / plug / hook / multifunctional buckle / rope buckle and plastic reinforcement film.
(2) according to the material quality: commonly used for plastic steel and nylon material, nylon material price is higher.

Tempering treatment of machine tool body casting

The reason for the tempering treatment of machine tool castings is that the most widely used materials in the machinery industry are iron and steel, and the microstructure of iron and steel is complex and can be controlled by heat treatment. So the heat treatment of steel is the main content of metal heat treatment. In order to make the mechanical properties, physical properties and chemical properties needed for machine tool castings, the heat treatment process is essential except for the reasonable selection of materials and various forming processes.
As a large casting, the casting products of the bed body must undergo heat treatment to improve their performance and improve the internal quality of the cast iron castings. Metal heat treatment is one of the most important processes in mechanical manufacturing. Compared with other processing techniques, heat treatment generally does not change the shape of the workpiece and the chemical composition of the whole, but by changing the microstructure of the workpiece or changing the chemical composition of the workpiece surface, giving or improving the working performance of the workpiece. Its characteristic is to improve the internal quality of the workpiece.
In addition, temper treatment can also reduce the brittleness, eliminate or reduce internal stress, steel parts after quenching there is a large internal stress and brittleness, if not timely tempering will often cause deformation and even cracking of steel parts. Secondly, the mechanical properties required by the workpiece are obtained. The hardness of the workpiece is high and the brittleness is large after quenching. In order to meet the requirements of the different properties of the workpiece, the hardness can be adjusted by proper tempering and the brittleness is reduced, and the required toughness and plasticity can be obtained. In the end, the workpiece size is stabilized. For some alloy steels which are difficult to soften by annealing, high temperature tempering is often used after quenching (or normalizing), so that the carbide in the steel is properly aggregated and the hardness is reduced to be cut.

Performance features and precautions of spiral cage conveyor

The structural features and precautions of the spiral cage conveyor are as follows:
The spiral cage conveyor body is composed of three parts: the head joint, the middle section and the tail section. In general, the middle section is arranged in length according to the length, and the longest middle section is near the head joint, and the middle section of the same length is placed together. The thrust bearing is loaded with the axial force in the head section. A spiral shaft is supported with a useful bearing in the middle and tail segments. In addition, the axially moving radial bearings are also installed in the tail section to compensate for the error of the length of the spiral shaft and to adapt to the change of temperature. The spiral surface has two kinds: solid spiral (S method) and belt spiral (D method). Flange connection is adopted between the screw shafts, which ensures the interchangeability of the connecting shaft and is convenient for maintenance.
Any material suitable for screw conveying can be conveyed by spiral cage conveyor. It can be conveyed continuously in horizontal, sloping and vertical conditions. In particular, it can be connected and fixed directly with its supporting equipment when it is inclined and vertical. It does not need foundation foundation and makes full use of space.
The spiral cage conveyor has good sealing performance, no dust and pollution leakage phenomenon, that is, not wasting materials, and create a good working environment. The spiral screw conveyor has the advantages of small diameter, high speed and large volume, especially for inclined and vertical transportation.

Basic maintenance of the packing machine for the decocting machine

The decocting machine maintains a few points:
1 decocting machine brush pot problem: not brush pot this problem is the most common problem, and this problem most likely lead to machine problems are: the speed of decocting medicine will slow, two heating disc is easier to burn, three heating plate bottom connection head will often break, and the cause is that the reason is no clear after decocting medicine. The accumulation of drugs will become thicker and thicker, and slow heat conduction will lead to a series of problems.
2 packaging machine packaging roll scalding problem: this problem is also common, and the cause is also a variety of reasons, roughly divided into the following points: a packaging machine packaging error, not installed in accordance with the training and installation order, so the problem is that the packaging is not homogeneous on both sides, thus the problem of packaging hot and more more and more It is serious. There are dirty things on the roller of two packing machine: there will often appear some medicine juice and a little ironing plastic on the packing shaft, and many people will ignore this problem. It will cause two problems when it is not cleaned up in time: the packing shaft is easy to stick to the packing roll and causes the problem of the knife and the shaft plastic more and more, which causes the bag packing bad, so it is often cleaned up. Packing shaft (recommended to wear gloves with high temperature steel wire ball cleaning, at this time do not roll, remember burns, injuries).
3 packing drug can not stop and do not take medicine: this problem is also easy to appear after a period of time after the machine is used. One packing machine can not stop medicine. Most of this is caused by the plug of the solenoid valve. The solution is to clean up the solenoid valve in the box of the machine box; and it may be a trip. Questions and probe questions (suggested to encounter such problems and timely communic

What are the types of PUR hot melt adhesives

From the way of melt, PUR hot-melt adhesive machine can be divided into two types: pressure plate and melt cylinder.
Press disc type PUR hot melt adhesive composite machine: the press plate is made of aluminum alloy precision casting, CNC precision processing, and the surface of the heating disc is treated by deep penetration sintering of DuPont Teflon, which has the advantages of high coating strength and not easy to fall off. The glue on the heating plate is easy to remove, which can effectively prevent the carbonization of the glue, ensure the best colloid, and reduce the blockage of the glue conveying system. The heating plate is aluminum alloy heating plate. When used, the heating disc is pressed upwards and down into the glue barrel. The heating disc is above the gum. When the heating plate is heated, only one layer of glue is contacted with the heating plate, thus melting point and melting point. The lower part of the pail is not heated at this time, how much and how much it needs to melt during the production, so that the glue can be heated for a long time and deteriorate. The colloid and the air are isolated when the glue is used. There is a O type seal between the heating plate and the inner wall of the rubber barrel so that the molten liquid will not contact with the air, and the requirements for the use of the PUR hot melt adhesive are guaranteed.
Melt cylinder PUR hot melt adhesive machine: the heating part is a thick wall cylinder body, which is usually made of aluminum alloy. Small packages of glue (colloidal particles) are put into it and heated and melted. There is a lid on the cylinder

Maintenance of high and low temperature test box

First, in the laboratory environment, it is necessary to choose a good installation site, which is the prerequisite for the compressor to use the air system correctly. If the testing environment of the test equipment is not planned before the incident, the results of such haste are not known, but the reasons for the difficulties in the maintenance of the compressor failure and the poor quality of compressed air are formed in the future.
1, because the compressor has air circulation system, if the air dust in the ambient air of the equipment is more, the filter device should be added. At the same time, the air is absolutely not allowed to contain combustible gas and corrosive gas, so as to avoid the possibility of explosion or internal rust. On the whole, it is necessary to ensure that the relative humidity of the air is low, the ash is often small, and the ventilation is good.
2, the compression performance is not suitable for high temperature, and the ambient temperature is below 30 C. If the temperature is too high, the output air volume of the compressor will be reduced.
3, the equipment should be placed in a spacious place, small space is not conducive to the maintenance and maintenance of the later period, especially the radiator of the compressor (condenser) should be regularly maintained and kept clean.
4, the voltage of the test box should be kept stable, but it will cause the current to be too large or too small.
5, the test box should be built on the rigid floor. Before installation, the basic plane should be level to avoid noise caused by the vibration of the compressor.
In the process of testing, proper operation and reasonable handling of faults are beneficial to the maintenance and prolonging of service life of the compressor.
1. In the process of testing, it is not suitable to start the compressor frequently. The interval between the compressor start is 15 minutes.
2, the equipment in the trial operation, strictly check the direction of the compressor operation, when the reversal should be stopped immediately, cut off the power, the three lines of any two pairs of adjustment and then reopen the machine, otherwise the compressor will be damaged.
3, test equipment in the work, regular inspection of compressor safety valve protection system, to ensure its sensitive and reliable.

Cleaning advantage of the ground car and the sweeper

With the upgrading of the industrial structure in China, especially the scale of the second, third industry is expanding, the demand for clean sanitation is getting higher and higher, and a large number of modern cleaning equipment are urgently needed to solve the problem. In addition, the cost of human resources is increasing, and the traditional cleaning methods which need a lot of human and material resources are not suitable for the demand of the times. It is the inevitable trend to improve the new way of cleaning. Nowadays, as a new generation of cleaning equipment, washing cars and sweeping cars are gradually conquering the clean market with the advantage of technology.

The work efficiency of the ground car and the sweeper is high, usually one machine is equivalent to more than 10 people, and the brush plate of the ground washing car and the sweeping car can produce strong friction and clean the ground stains thoroughly. This makes the production cost and cleaning effect a strong guarantee, the dirt after the surface cleaning, one step to complete the washing, Cleaning procedures such as mopping and drying make cleaning easier and more efficient, and achieve the perfect cleaning effect.
Today, the design of cleaning equipment is undergoing changes beyond the function considerations, the design of the equipment is more attractive, and the types of equipment used in different use environments have also been more subdivided. A compact and practical device design is necessary to consider the ability to use self and safety and mobility in a narrow or obstructing area. The application of innovative design of compact ground car washing car and sweeping car, in hospital, school, restaurant, car exhibition hall, fitness center, supermarket supermarket including home cleaning, we meet the small area, large equipment can not be used, poor mobility, and manual cleaning can not reach the effect of embarrassment.

In this case, compact land washing vehicles and sweeping cars came into being. On the one hand, it can overcome the problem of huge volume of traditional washing cars and sweeping cars, and is suitable for ground cleaning in some narrow spaces. On the other hand, with very low noise, it is also capable of cleaning in a sensitive medical environment. Simple operation and safe use, excellent cleaning effect can be obtained. At present, mini type ground washing car and mini type sweeps can fully meet the needs of modern clean market, both in function and in shape, with the advantages of traditional cleaning tools.

General principles of numerical control programming tool path

Open and coarse: under the maximum load of machine tools, most of the cases should use as large a knife as possible as much as possible, and feed as fast as possible. In the case of the same knife, feed is inversely proportional to the amount of feed. Generally speaking, the load of the machine tool is not a problem. The principle of selecting the knife is mainly based on whether the product’s two-dimensional angle and the three-dimensional arc are too small. After selecting the knife, the knife length is fixed. The principle is that the length of the knife is greater than the depth of the processing, while the large workpiece should consider whether the chuck is interfered.

Light knife: the purpose of light knife is to meet the processing requirements of finishing the surface of the workpiece and reserve proper allowance. Similarly, as long as the knife can be used as soon as possible, because the knife needs a longer time to use the most suitable feed and feed. In the same feed, the larger and faster the transverse knife is, the amount of the feed is related to the smoothness after processing. The size of the feed is related to the surface shape of the surface. In the case of no injury, the minimum allowance is left, the maximum knife, the fastest speed, and the proper feed are used.