2025年7月10日星期四
Automotive Clip And Fastener manufacturer in China
2024年10月30日星期三
Precision Injection molding for Smart wearable device
2021年5月25日星期二
Traditional, High - speed and Precision Injection molding
As we all know, injection molding production is pursuing "high quality, efficiency, low consumption", that is, the pursuit of profit maximization. However, the development of things needs a process, rather than overnight, the development of injection molding, and in different stages of development, the focus is different.
Traditional injection molding
The initial traditional injection molding is a priority to guarantee the normal period, the quality can be appropriately relaxed, not to mention the good rate of production and production efficiency. At that time, the technical master reflected in that others can not adjust qualified samples sample mold, as long as you can call out (no matter you spent one or a day a night or three days or two nights), you are a "cow" person, you are the hero. In view of this, leading to the high adverse rate of product products, many rely on human processing (water cutting inlet, batch cutting, pressing edge, smelting device correction deformation, etc. ), long production cycle, quality cannot be guaranteed, long - term vicious cycle of rework. Although now the traditional injection molding has been greatly improved, the man-machine ratio and labor intensity are still very high.
High-speed injection molding
High-speed injection molding relative to traditional injection molding, reduce the human-machine ratio, reduce labor intensity, with mechanical automation to replace most actions of people, reflect "quantity"; this process, high requirements for mechanical automation and assembly line operation. Qualified technical masters, not only to see if you can debug the OK model but also to consider the stability and operability of production. If you do not reach the set expectations, your model is "beautiful", it is just a model for viewing, and you cannot become the "guide" of mass production.
Precision injection molding
Precision injection molding is developed on the basis of high-speed injection molding, is specialized in the production of high value-added products, refers to an injection molding method difficult to meet the requirements of conventional injection molding machine and conventional injection molding process. Reflect "quality" to gain credibility, to "quantity" to gain profit. The precision of precision plastic parts includes size precision, shape precision, and surface precision, corresponding to size tolerance, shape tolerance, and surface roughness respectively, where size precision is an important quality index of manufacturing and use of plastic parts.
There are many factors affecting the quality and size precision of precision injection molding products, such as material selection, mold design and processing, precision injection molding machine, molding technology, the level of molding personnel and production management, etc.
Specific requirements are:
( 1) The size accuracy is high and small tolerance, i. e. high precision size boundary;
(2) product weight repetition accuracy is high, requiring day, month, year size stability;
(3) mold is good, rigid material, size accuracy, smoothness of the type cavity and positioning accuracy between templates are high;
(4) replaces replace conventional syringe;
(5)The adopts the precision injection molding process;
( 6) Select materials suitable for precision injection molding.
reference from https://www.quora.com/Why-is-precision-injection-molding-difficult
2021年5月19日星期三
3d printing is cheaper alternatives for injection molding?
What is a cheaper way than 3D printing for injection molding
Look At It From the ABS Plastic Products
Why would you consider no 3D printing and injection molding
Tips of your choose
2021年5月11日星期二
What is the shot size in injection molding?
Basic parameters of injection molding machine
The basic parameters of the injection molding machine can better reflect the size of the injection molding products, the work capacity of the injection molding machine, and the evaluation of the type, grade range, and product quality of the processed materials. The basis for the selection and use of injection molding machines.
1. The injection quantity —— the maximum injection quantity that the injection system can achieve when the injection screw or plunger makes a maximum injection stroke under the condition of air injection.
To a certain extent, this parameter reflects the processing capacity of the injection molding machine, marks the maximum quality of the plastic products that can be formed by the injection molding machine, and is an important parameter of the injection molding machine. The PS standard (density ρ=1.05 g/cm3) is expressed by the mass (g) of the injected melt and the volume (cm3) of the injected melt
According to the definition, the theoretical value of the maximum injection capacity of the injection screw at one time is the product of the maximum projection area of the screw head in its vertical and axis direction and the stroke of the injection screw. QL =π/4 D2 S
The injection molding machine can not reach the theoretical value in the working process, because the density of plastic changes with the change of temperature and pressure, therefore, the injection capacity needs to be corrected properly. The modified injection capacity is Q=αQL =π/4 D2 Sα,α—— ejection coefficient, which is generally 0.7∽0.9,
The processing of plastic products on injection molding machines
the quality of generic products and the total amount of materials used in the gating system shall not exceed 25%∽70% of the injection molding quantity of the injection molding machine,
2. Injection pressure —— the force acting on the unit area of the melt by the end face of the screw or plunger. The size of the injection pressure is related to the injection molding machine structure, flow resistance, product shape, plastic properties, plasticizing mode, plasticizing temperature, requirements.
A 、 material fluidity is good, product shape is simple, arm thickness is big, the general injection pressure is less than 340∽540 Kgf/cm2. Applicable to the processing of LDPE, PA, and other materials.
The B、 material melt viscosity is low, the product precision is general, the injection pressure is 680∽980 Kgf/cm2. Applicable to the processing of PS, HDPE, and other materials.
The melt viscosity of C 、 material is medium or high, the precision of product is required, the shape is complex, the injection pressure is 980∽1370 Kgf/cm2., and the injection pressure is Applicable to the processing of PP, PC, and other materials.
D、 material has high melt viscosity, thin wall, long process, high precision, complex shape, the injection pressure of 1370∽1670 Kgf/cm2. Suitable for reinforced nylon, polysulfone, polyphenylene ether, and other materials processing.
E 、 processing high-quality precision micro-products, injection pressure can reach 2260∽2450 Kgf/cm2.
In order to meet the processing requirements of injection molding precision products or products with complex shapes of molding structure and engineering structural parts, the processing adaptability of the injection molding machine is enhanced, the molding period is shortened, and the product quality is improved. The injection pressure has a trend of increasing.
3. injection time (injection speed,)—— the melt began to cool after passing through the nozzle. In order to inject the melt into the mold cavity in time and obtain a dense, uniform, and high precision products, the melt must be filled with the mold cavity in a short time. In addition to sufficient injection pressure, there must be a certain flow rate.
4. plasticizing ability —— the amount of material that can be plasticized in unit time, and the plasticizing ability of general screw is related to screw speed, driving power, screw structure, material performance, and so on. The plasticizing device of the injection molding machine should be able to provide a sufficient amount of plasticized and uniform melt within the specified time, and the plasticizing ability should be coordinated with the whole molding cycle of the injection molding machine. The theoretical plasticizing ability of a general injection molding machine is more than 20% of the actual requirement.
2021年4月26日星期一
Career crisis at 35
CNMOULDING talk about China's 35-year-old workplace crisis
First,35-year-old employees are expensive, no cost-effective, no young people a high degree of cooperation.
I do business, not charity. Said to listen to the point called the staff, said that the bad point is the commodity, did not see me to use the price ratio? 70% new goods are more expensive than 90% new ones.
High EQ: It's our company's salary doesn't suit you
Second,35-year-old employees are not good "hoodwink ", more opinions
I want obedient college students like sheep, not you who know how to paddle and fish but also dare to talk back to the leaders because of overtime.
Hi EQ: It's our corporate culture that does n' t suit you
Third,35-year-old employees do not work hard, but also busy with housework.
You are all busy with your family. Who will work overtime for the company? You do not work overtime, my child's milk powder money how to come, my Mercedes who refueling me?
High EQ: our team atmosphere is not suitable for you.
The result of homogeneous competition is that the competitive cost of all participants is high, but the marginal income decreases or even returns to zero
There is a famous theater effect in economics like you're watching a show at the moment. If everyone is sitting and watching it is easy and clear, but if someone chooses to stand up, he will get a better view. The price is tiredness.
But the next problem is that other people's experiences get worse, and you have to stand up to deal with it. The final result was that everyone stood and watched the show. Very tired not to say vision is not necessarily better than sitting.
The same is true in the workplace, when all companies scramble to force employees to work overtime, the final result is that employees are tired, but the company may not be able to make better profitability. The eight-hour work system is how many years of labor groups strive for rights, this balance is not easy.
But many vested interests, like Ma Yun, hold this attitude of "overtime struggle is a blessing ". As people with more resources, they always threaten others to accept his rules. This is why we want to build a society ruled by law, even if sometimes under the choice of the rule of law, we do not seem so" progressive ".
But there is still a lot of struggles 13 is willing to do, the boss can be justified to say 996 you do not want some people willing.
Why the dinner roll?
Some people like to burn themselves, by the way, to ignite everyone
And finally, we're gonna hand in hand
Illuminate the capitalists.
But CNMOULDING is not such an enterprise, we pay more attention to the family sense and group nature of the enterprise. Our entire mold production team has been working together for more than 20 years, with rich working experience and team spirit is what we need for such an excellent plastic injection molding company. This is why we have been leading other companies.
2021年3月16日星期二
What is the real income of Shanghai,China?
Shanghai has become an international city. Consumption is also becoming more and more expensive. We must be very interested, Shanghai works in various industries, how much do they earn?
Cnmoulding as a production injection molding company. There are 40 employees, basically, each engineer's income is 15000 yuan.(2500usd/month)
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Let's look at other companies.
The following are several 18,19,20 years of graduates, majoring in computer, automation, communications, electronics. The following are all school pay, before tax.
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Let's start with computers:
Inner ring a state-owned enterprise, computer doctor, about 400000.
Meituan, computer doctor, about 40-500,000.
Master of computer, generally more than 300000.
A university in Shanghai, computer doctor, lecturer, more than 10,000 a month, annual salary estimated 180000.
Another suburban university, computer doctor, lecturer,180000.
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Other professions:
Shunfeng, UAV Research, Master,300000.
Zhang Jiang small-scale science and technology private enterprises, doctor,300000.
Pudong Automobile Foreign Enterprise, autopilot, Master, an individual can reach 300000.
Pudong automation industry famous foreign enterprises, doctor,250000.
Jiading a medical technology company, master less than 200000, doctor about 250000.
Pudong a patriotic factory, master unified cabbage price of 250000, the doctor seems to be 350000.
Minhang a research institute, doctor, a monthly salary of 17000, an annual salary of about 300000.
A famous automotive electronics company, master 200000, doctor 250000.
Southwest suburb of an automobile private enterprise research institute, doctor about 230000.
A famous video security company, the master, seems to be 200000.
Minhang many aerospace research institutes, doctor 18-27 million, master less than 180000.
Pudong heavy industry manufacturing enterprise, the doctor estimated 180000, master's monthly salary of 10,000.
Shanghai near Kunshan a heavy industry manufacturing industry, doctor,180000.
Caohejing Internet enterprises, master, the monthly salary of 17000, the annual salary of about 200000.
Pudong an aircraft industry, the doctor seems to be less than 200000,(heard that a master of machinery to 6000 a month).
Shanghai auto industry leader, master unified 170000(heard that the impact of the epidemic wages fell 40%).
Xu Huimou Institute, Ph. D., the monthly salary of 10,000, the estimated annual salary is not more than 160000.
North of an aircraft factory, master, monthly salary less than 10,000.
A ship research institute, Bo Hou, heard that the monthly salary of 8,000.
----------------------------
Supplementary note:
The same number, different enterprises will give differently.
Most of them refer to pre-tax wages, but some companies like to promote corporate costs.
Some state-owned enterprises have dormitories, canteens, supplementary provident fund and other benefits, the hands may be more.
Some private companies may not pay five risks and one gold in full.
Some places may go into lower wages, others increase wages every year.
Some are general packages, and some hide benefits that are not publicly available.
Some companies 996, some companies 955.
2020年11月17日星期二
Guard against COVID19, in Shanghai is very serious.
Refuse to wear a mask on the bus? A driver in Shanghai stopped to call the police and the female passenger was brought back to the police station
2020年9月27日星期日
The latest ranking of the world's financial centers: Shanghai's first consecutive rise to the top three in the world
The latest Global Financial Center Index released today, Shanghai's comprehensive score ranking rose again, surpassing Tokyo for the first time in the world's top three.
September 25, by China (Shenzhen) Institute of Integrated Development Research and the United Kingdom, think tank Z/Yen Group jointly compiled the "28th Global Financial Center Index (GFCI 28)" report officially released. New York, London, Shanghai, Tokyo, Hong Kong, Singapore, Beijing, San Francisco, Shenzhen and Zurich are the top 10 financial centers in the world, according to the latest report.
Among the world's five largest financial centers, Shanghai is catching up. Compared with the 27 th Global Financial Center ranking, the ranking of the top ten financial centers in the world has changed greatly. Among them, the Shanghai score rose again, surpassing Tokyo for the first time in the world's top three ranks, representing the highest position of Chinese cities in the global financial center.
In the last three rankings, Shanghai was promoted to three levels. Shanghai is still in fifth place in the 26th issue of the Global Financial Center Index released last September, and in March, Shanghai rose to fourth place and is now in the top three in the world.
Hong Kong's score rose 6 points, surpassing Singapore's fifth in the world. Shenzhen and Zurich are in the top 10, while Los Angeles and Geneva are "squeezed out" of the world's top 10 financial centers. Beijing and San Francisco ranked seventh and eighth in the world. So far,12 cities in mainland China have entered the global financial center index list.
The "Matthew Effect" of Financial Center is obvious
Diversification of Mainland Financial Centres
China and the United States have outstanding advantages in financial science and technology
2020年8月14日星期五
China's four major first-tier cities, how much monthly income, can be counted as the middle class?
First, Let's look at the number of the total working population in our country. According to the 2018 statistics, Of our more than 1.4 billion people, A total of 775 million belong to the working population. The rest of the population, are the elderly, children and students. Of the nearly 780 million working people, According to the 2018 statistics, With a monthly income of less than 2,000 yuan, About 38%, These people basically live in rural and small towns in the Midwest. With a monthly income of 2,000 to 5,000 yuan, About 46%, Almost half of the working population (over 300 million), Belong to the main force.
It reflects the proportion of each class, which belongs to the standard working-class and basically lives in the second, third and fourth-tier cities. People with a monthly income of 5000 yuan to 10,000 yuan account for about 13% of the total working population. As for the monthly income of more than 10,000 yuan, the proportion is not large, basically living in major cities. According to the wage standard of 2018, the average annual salary of non-private units in cities and towns in China is 82461 yuan, and the average monthly salary is 6871 yuan. The average social wage of urban private units is 49575 yuan, and the average monthly wage is 4131 yuan. In fact, because each city's economic strength gap is very big, each city's salary treatment also has the obvious disparity.
North Guangzhou and Shenzhen four major first-tier cities pay relatively high. Taking the most economically powerful Shanghai as an example, in 2018, the average wage in Shanghai was 7892 yuan. If the income in Shanghai is more than ten thousand, it has exceeded the average of Shanghai. So, the monthly income of more than 10,000 yuan, has entered the middle-class family? Seriously, if only a monthly income of ten thousand, can not enter the middle class, because mainly depends on their place of residence. The level of the city is different, and the monthly living expenses are different. For example, in an ordinary county may be a more prosperous township, a monthly income of more than 10,000 yuan, absolutely belongs to high-income people.
In the case of a general salary of two or three thousand yuan, he is definitely a middle class. For another city, for example, in the four first-tier cities north of Guangzhou and Shenzhen, the monthly income is more than 10,000 yuan, excluding all kinds of living expenses, in fact, there is no much money left, the quality of life and the third and fourth-tier cities monthly income of four or five thousand groups. Of the 775 million working population in China, the group with a monthly income of more than 10,000 yuan shall not exceed 70 million people, in other words, not more than 10. In fact, these groups are not all middle class, because the actual situation of each family is different. For example, in the north of Guangzhou and Shenzhen and other major cities, only housing loans accounted for a large proportion. Plus other living expenses, even with a higher household income, there is not much left every month.
For most families, there is a common problem, that is, very poor risk resistance. In the event of major accidents, such as business funds freeze, family members seriously ill and so on, the family will immediately fall into trouble. For a middle class, it requires at least hundreds of thousands to millions of activity funds. Once a variety of special circumstances can support a relatively long time. Even in the event of a major change, it will not be beaten back to its original form. Such situations abound, such as families that seem to be rich, facing a sudden major disease that is enough to destroy a family.
The biggest way for a family is to sell a house. For a family, it is bound to face loans such as mortgages, car loans, business investments, and children's education and living expenses. After these expenses are eliminated, how much money can be left each month is key. Seriously, monthly gross income, a minimum balance of 30% to 40%, is the standard for the middle class. According to the above question, we set a series of standards for the middle class: first, to own their own houses and vehicles, and more than one or one. Second, households have a minimum of hundreds of thousands to millions of reserves to cope with risks and problems.
Third, each month can balance a considerable part of the income, further enrich the household reserve. Fourth, have higher income work or channel. More than 10 years ago, the author was in college. At that time, the author waited for several students in the restaurant, and the two sisters at the next table were chatting. A woman said ," my minimum monthly expenses need 10,000," at that time, the author a face disdain, feel the elder sister deliberately brag. In retrospect, the woman was telling the truth and was the price standard at that time. By the author's side, several families spend between 10,000 and 20,000 a month, or even 20,000,30,000, or more.
Seriously, in ordinary second-tier cities, the author thinks that the minimum monthly income of families is more than 30,000 yuan, which is the entry standard for the middle class. Because the author has similar families, living expenses and various loans, it takes nearly 20,000 or more a month. In other words, households that earn between 300,000 and 500,000 a year have just been pushed into the middle class. An annual income of 500000 to 1 million families, risk resistance will be greatly enhanced. At this stage, people will begin to consider the education of children, interest training, school district housing replacement, vehicle replacement, career development and so on. Of course, this is the second-tier city standard of the author's life.
If it is in the north of Guangzhou-Shenzhen four major cities, the standard must be greatly improved. One of the author's college classmates worked and settled in Shanghai, working in a foreign company for himself and his wife, with a monthly total household income of about 60,000. In terms of numbers, it's very good. However, every month apart from all kinds of expenses, the day is still tight. According to the students themselves, they belong to the bottom, the most low level. In other words, according to the description of students, in the north of Guangzhou and Shenzhen and other four cities, monthly income of more than 100000 or annual income of more than 1 million, only to enter the entry-level of middle-class families.
Although this is a classmate's husband and wife's words, CNmoulding feeling is not excessive, relatively close to the real level. After all, it's all about spending, it's a huge number (second-tier cities cost 20,000 a month). Finally, the author and everyone talk about class or circle, not a circle do not squeeze, the author's relatives live in Beijing, the family level is the middle or upper level. The author once asked, why not go further? Relatives answer: live very tired, and the child will be obviously inferiority complex.
2020年8月11日星期二
5.4% Real growth in foreign investment in Shanghai in the first half year
Shanghai is in the spotlight
The World Bank reports that China's ranking in Doing Business jumped from 78th in 2018 to 31st in 2020, Shanghai with 55% weight to help China's business environment to reach the world's frontier level. On the same day, The Shanghai municipal government announced, Under the influence of the new crown pneumonia, In the first half of Shanghai, foreign capital was 10.28 billion US dollars, an increase of 5.4% over the same period last year; New multinational regional headquarters 26, R & D center 10, The cumulative number of 746 and 471 respectively.
What is the magic of this fashionable and modern "magic capital" to keep foreign investment in China and "increase" China?
The world's most fascinating supermarket
Do business in Shanghai to reassure foreign investors
Shanghai is chosen to choose Shanghai as the mold and product production base
2020年7月31日星期五
Shanghai's richest man is also short of money?
On July 27, Moody's, a rating agency, downgraded Fosun International Ltd.'s corporate family rating from quote Ba2" to quote Ba3".
High leverage, Moody's downgrades Fosun international rating outlook to negative
Moody's downgraded Fosun International Ltd.'s corporate family rating (CFR) from & quote Ba2" to & quote Ba3". in a recent rating adjustment
Net operating cash flow continued to decline, foreign media reported that Fosun sold rookie equity to withdraw funds
2020年7月26日星期日
Per capita disposable income in Shanghai
Recently, the National Bureau of Statistics website announced the first half of 2020,31 provinces residents per capita disposable income.
In the first half of 2020, Shanghai residents are proud of their disposable income of 36600 yuan(around 5250usd) per capita. Beijing followed closely, with a per capita disposable income of 34600 yuan in the first half of the year. Shanghai and Beijing are the only members of the "30,000 yuan club "of per capita disposable income in the first half of the year.
Here is the definition of per capita disposable income:
Per capita disposable income in real life often used to refer to per capita disposable income, strictly speaking, this use is not accurate. The disposable income of the residents is the sum of the final consumption expenditure and savings that the residents can use for the discretionary income. Includes both cash income and in-kind income. According to the source of income, disposable income includes four items: wage income, net operating income, property net income and transfer net income. In other words: excluding social security, provident fund, personal tax and a series of accounts payable, the rest of the money is your disposable income
I know that when this per capita data comes out, a large number of people say: how can I be averaged? Where do I get that much money? I'm dragging my feet again!
But is this per capita disposable income really higher than the actual situation this year?
My first feeling about per capita disposable income in Shanghai is that the data is low.
This is not to say that my salary is high but relative to the consumption in Shanghai.
The National Bureau of Statistics has released per capita disposable income and per capita consumption in cities in the first half of the year.
From the statistical data, in the first half of the year, Shanghai people were the ablest to consume, and the per capita consumption expenditure again exceeded 20,000 yuan, which was also the only city in the country to break through 20,000 yuan.
Beijing, Zhejiang, Tianjin, Guangdong, Jiangsu, Fujian, and Chongqing are located in the 10,000 yuan ladder, the remaining 22 places per capita consumption expenditure is below 10,000 yuan.
The per capita disposable income in Shanghai in the first half of the year was 36577 yuan, and the per capita consumption expenditure was 20112 yuan. Although Shanghai earns the most, it also spends the most.
Why can spend so much money in Shanghai? Let's make a simple calculation.
Dinner
According to Shanghai consumption level: breakfast lunch =30 yuan,30*30=900 yuan
This is already a very economical algorithm, plus overtime dinner, supper, weekend dinner and so on that can be more than 900.
Transportation
Commute to and from public transportation, compromise even 6 good, occasionally bad weather, bad mood and so on hit a car Even 200! 21 working days*6 200=326 yuan
Shopping consumption. Everyone thinks that girls buy strong, but in fact now boys in shopping is also unwilling to show weakness!
Game clothes, shoe bags, monthly wages to hand, the first is to lose the shopping cart stored in the baby. Don't tell me,1000 yuan is always required.
Human expenses
Friends' birthday, colleagues married, these irregular factors, although not necessarily every month, but when met is a big expense, the average down to 500 yuan per month is absolutely no exaggeration.
Love Fund
Love is very beautiful, but the cost is not small, after all, is not ancient, flower watching the month can be fixed for life, modern life is where to spend money, said before the cost of a date in Shanghai? 800 yuan! All kinds of fees: rent, utilities, internet, telephone, membership account fees. If you say you're single, love money does n' t exist. So, at least sleep? The rent can be expensive, in Shanghai even if the suburbs can no longer be suburban, including your utilities, telephone charges, Internet charges,1500 a month is absolutely super conscience price. Total :900 326 1000 500 800 1500=5026
The monthly guaranteed cost is 5026 yuan! This is not a mortgage, car loans, not to mention deposits, negative assets have been very contented!
Per capita, disposable income is 36,577, or 6096 yuan per month. Relative to this only for reference 5026 yuan of basic consumption, do you think it is still high? U. N. Secretary-General George Guterres recently pointed out that the richest 26 people control half of the world's wealth. Twenty-six people control half the world's wealth, and I am a billionaire on average with one of the 26. At the same time, I think that I have brushed a video some time ago. At a press conference during the two sessions, the Prime Minister said that about 600 million people in China earn about 1000 yuan, not to mention in first-tier cities. Even in the second and third-tier cities is difficult to survive. After this video came out, I looked at most of the comments below, thinking that the Prime Minister was very approachable and focused on the bottom income of the masses. But some people use the topic, whenever there is positive news in society, he has moved out of the Prime Minister's words, very proud to say: China has about 600 million people in the income of about 1000 yuan. It's like he knows the country best.
CNMOULDING think about it, no money is not terrible, no money and take it for granted is terrible. Since we are a small mold maker, a plastic injection molding machine technician income can reach $2000 a month, if you do not have money, can only show that you did not work hard.