one
First, the purpose of the internship:
Practice is mainly to combine theory with practice to better understand the theory, so as to apply the theory learned in the course to practice.
Second, the internship unit and work introduction:
During the internship, I mainly visited the production lines of four companies. Through the explanation of the responsible persons of each company, I learned about the development of each of the four companies and the development process of their production technology.
Third, the internship arrangement:
The four masters of internship are always experienced on-the-job predecessors if they attend classes among the school masses in the morning. In the afternoon, mass organizations mainly visited the production line of an industrial park in Qixia District.
Fourth, the internship materials and processes:
In just four days, I learned something that I couldn't learn in school, which is also a part that my major rarely involves. There are mainly two parts, one is the related theory and technology of printer, and the other is the production and processing of circuit board.
Through the theoretical teaching of Mr. Li and Mr. Zhang in the morning, I learned about the five categories of printers and the popular stereo printers. It feels really amazing. A printer can print out a car model by using a classic by writer Su Tong: We can go as far as our thoughts go. There is nothing impossible in life, only unexpected, but what you think can't be done or can't be done well must be realistic. According to the requirements of resources, demand, technology and other aspects, it is well combined, that is, it is well done. Then the classification of pcb, according to different classification methods. Mainly classified by materials and processing technology. The teacher said that there are five kinds of materials, paper, epoxy, glass fiber, polyethylene oxide and ceramics. There are different classifications according to the processing technology, and the processing technology is mainly divided according to the different technologies that appear in its development process. Then it is the basic principle of single chip microcomputer and the development and classification of printers.
During the visit, I learned the importance of technology and its influence on products. In Zijin mechanical and electrical equipment factory, we visited the printer production department. I also saw the most advanced stereo printer in it. Although I saw it through the glass, I obviously felt the importance of technology. Why can't our country have the advanced vision of foreign countries? The idea is that the technician told us that the stereo printer in the glass is imported from abroad. When I look abroad, I don't understand whether it is a technician or something. I deeply feel that in any case, we all need to have our own things and our own characteristics. After that, the factory visited saw the pcb production line and the pcb production line with parts. Every working procedure determines the quality of the product. Because every step in the production process plays a decisive role, everyone is the most important.
Five, internship summary and experience:
The short four-day production practice is over, and I feel deeply. Production must be combined with practice, not only with technology, but also with appearance. The technology is faster and the update is faster; There is a unique appearance, that is, selling looks, which is so unique that people can't completely imitate it. And I think even when writing software, we should think about how these programs can be better combined with software and hardware, and how to easily make practical things after better combination, which makes people look comfortable. If you don't write programs, you have to write programs for customers, and of course, you have to combine them with reality to save costs.
In a word, products must be produced in combination with the market. The internship time was short, but I learned something tangible. I am very grateful to the school.
two
introduce
On the 23rd of xx and 24th of xx, we visited xxxxxx Co., Ltd.. By visiting factories and workshops in person, I have a better understanding of my major. Give me a preliminary understanding of the common textiles processed by printing and dyeing factories; At the same time, our team leader also explained to us many technological processes in dyeing and finishing, as well as the technological conditions and basic equipment needed for a specific process. Through this period of time, I not only enhanced my theoretical level, but also improved my potential to use theoretical knowledge to solve practical production problems.
After the internship, I searched and consulted relevant materials, deepened my understanding of professional knowledge, specifically understood the dyeing and finishing processes of several kinds of textiles, and initially understood the basic process of pad dyeing. Next, I will analyze two cases of pad dyeing of cotton fabric and printing processing of silk.
Basic process of fabric dyeing
The dyeing methods of fabrics are mainly divided into dip dyeing and pad dyeing. Dip dyeing is a method of dipping the fabric into dye solution to make the dye gradually penetrate the fabric. Suitable for small batch and multi-variety dyeing. Rope dyeing and jigging belong to this category. Pad dyeing is a dyeing method in which the fabric is soaked in dye solution, then the fabric passes through a roller, and the dye solution is evenly rolled into the fabric, and then steamed or hot-melted. It is suitable for dyeing a large number of fabrics. Dyeing is carried out under the conditions of necessary temperature, time, ph value and required dyeing auxiliaries. Dyes used for cotton fabric dyeing mainly include direct dyes, reactive dyes, vat dyes, soluble vat dyes, insoluble imino dyes, sulfur dyes and so on.
Shaoxing Zhiren Printing and Dyeing Factory mainly pad-dyes cotton, linen and viscose fabrics, while Hangzhou Huatai Silk Printing and Dyeing Group mainly prints silk fabrics.
Pad dyeing and silk printing of cotton fabric.
Continuous pad dyeing is generally divided into four parts: scouring and bleaching, dyeing, printing, assembly and main production workshop.
First, the basic equipment:
Scouring and bleaching equipment (pretreatment): singeing machine (gas singeing machine and copper singeing machine), scouring machine (open width and rope shape), oxygen bleaching machine, chlorine bleaching machine and mercerizing machine.
Dyeing equipment: hot melt dyeing machine, jig dyeing machine, infrared primer, color developing soaping machine.
Printing equipment: flat screen printing, rotary screen printing, roller printing, transfer printing and digital printing.
Complete set of equipment: setting machine, tenter, grinder, calender, pre-shrinking machine and cutting machine.
Second, the process flow:
1. Inspection of the original cotton fabric-turning printing-sewing-singeing-(desizing)-scouring-bleaching-mercerizing-drying).
Singeing: The purpose of singeing is to burn the fluff on the cloth surface, make the cloth surface smooth and beautiful, and prevent uneven dyeing and printing defects caused by fluff during printing and dyeing. Fabric singeing is to quickly penetrate a high-temperature flame or brush the fabric across a red-hot metal surface with a flat width. At this time, the fluff on the surface of the fabric quickly heats up and burns, while the fabric body is relatively tight and the temperature rises slowly. Before it reaches the ignition point, it leaves the flame or hot metal surface, so as to burn the fluff without operating the fabric.
Desizing: In order to weave smoothly, textile mills usually size warp yarns to improve strength and wear resistance. The size on cotton fabric can be removed by alkali desizing, enzyme desizing, acid desizing and oxidant desizing.
Scouring: After desizing of cotton fabric, most of the size and some natural impurities have been removed, but a small amount of size and most natural impurities remain on the fabric. Scouring refers to the chemical degradation, emulsification, expansion and other reactions between scouring AIDS such as caustic soda and pectin, waxy substances, nitrogen-containing substances and cottonseed hulls. And impurities are removed from the fabric after washing.
Bleaching: After scouring, the appearance of cotton fabric is not white enough because there are natural pigments on the fiber, which will affect the brightness of color when used for dyeing or printing. The purpose of bleaching is to remove the pigment and give the fabric the necessary and stable whiteness without obvious damage to the fiber itself. The common bleaching methods of cotton fabric are sodium nitrite method, hydrogen peroxide method and sodium chlorite method.
Mercerizing treatment: Mercerizing treatment refers to the process of treating cotton fabric with concentrated caustic soda solution at room temperature or low temperature under tension in both warp and weft directions to improve fabric properties. After mercerizing, the natural twist in the longitudinal direction of the mercerized cotton fabric disappears due to the bulkiness of the fiber, the cross section is oval, and the reverse direction of light is more regular, thus improving the luster.
Dyeing: Dyeing is the process of combining dyes with fibers by physical or chemical methods, or generating pigments on fibers by chemical methods, so that the whole textile has the required color. Dyeing is carried out under the conditions of necessary temperature, time, ph value and required dyeing auxiliaries. Dyed products should have uniform color and good color fastness.
Finishing: Cotton fabric finishing includes mechanical and chemical aspects. The former includes tentering, calendering, electro-optic, embossing and mechanical pre-shrinking finishing. The latter includes soft finishing, stiff finishing, whitening finishing and shrink-proof finishing.
Feelings and experiences
When I visited Shaoxing Zhiren Printing and Dyeing Factory and Hangzhou Huatai Silk Printing and Dyeing Co., Ltd., I not only deepened my classroom knowledge, but also got a lot of things that I couldn't learn in class. After learning the dyeing and finishing process, I visited the whole process of dyeing and finishing in the factory and became familiar with the basic process and dyeing and finishing equipment, which will certainly be of great help to my future study and work. I feel a lot of psychological pressure, and the day of looking for a job is getting closer and closer. Although the environment in those companies is not very good, I have experienced working life and found that there are many things to learn in the future. I will work harder and learn more knowledge in the future, then work hard and start my new life journey!
three
First, the internship time
June 20th10-July 3rd 2065 438+00
Second, the internship location
Jilin Mechanical Brake Factory, Changchun Changjiu Logistics, Beijing Railway Logistics.
Third, the internship materials
This internship mainly visited Jilin Mechanical Brake Factory, Changchun Changjiu Logistics and Beijing Railway Logistics to get to know the business of these enterprises, be familiar with business logistics and have a preliminary understanding of these enterprises.
1, Jilin Mechanical Brake Factory
Business processes mainly include plastic stamping, machining, surface treatment and goods storage.
First of all, under the leadership of the staff, we visited the plastic stamping branch of the factory. At the gate of the factory, it says, "Stamp excellent products, shape a good image, recognize the situation clearly and strengthen confidence." Entering the factory building, only the roar can be heard, and the workers are working hard in such a noisy environment. There are two rows of punching machines in the middle of the factory building, and the machinery rotates far and fast. Workers must always concentrate on stamping automobile parts. Hang 3-4 operating tables and precautions on each Zhang Chong bed to standardize the operation. The layout of the workshop includes material warehouse, mold warehouse, geometric measuring room, maintenance area, restricted area, bench cleaning class and waiting area, which proves the various processes needed to produce these automobile parts.
Then we visited the processing plant, and their production slogan was "responsibility, innovation, realism and success". When you enter the factory building, the first thing you see is the publicity column, which contains corporate culture materials, work precautions and other materials. Parts needed by different brands of cars have a processing area and several processing production lines.
Finally, we visited the surface treatment branch. Model essay on visiting internship report. Its temporary storage area is large, but it is not neatly placed. Outside the factory, we saw a small open-air warehouse with some boxes and trays inside.
This visit is mainly to have a general understanding of the logistics process of automobile parts production.
2. Changchun Changjiu Logistics
Business processes mainly include vehicle logistics planning, parts logistics, general cargo flow, warehousing, transportation, distribution, automobile sales and after-sales service.
First of all, Manager Cai of the human resources department of the enterprise introduced the situation of the enterprise to us. In the introduction, we saw the video materials of long-term logistics. Founded in 1992 and headquartered in Beijing, the company is an intensive comprehensive service group company integrating vehicle logistics planning, parts logistics, general cargo flow, warehousing, transportation, distribution, automobile sales and after-sales service. The total number of employees exceeds 2000. It involves passenger car logistics, commercial vehicle logistics, automobile sales, automobile parts logistics and general cargo logistics. , business areas all over the country. There are more than 50 wholly-owned and holding subsidiaries, and more than one commodity automobile storage base 10, with a total storage area of over 6.5438+0.3 million square meters, with an annual transportation potential of 600,000 vehicles and sales of more than 20,000 vehicles. This enterprise is a private enterprise of Hyundai Motor Logistics in China, ranking the top three in the automobile logistics industry in China. In September 2003, Changjiu Logistics passed the iso900 1:2000 standard quality management system certification. In June, 2006, 1 was rated as a 5a-level logistics enterprise by China Federation of Logistics and Purchasing, and became one of the enterprises with 5a-level logistics standards in China 15.
Secondly, there are professionals in the Ministry of Transport to explain the company's automobile logistics and distribution. Changjiu Logistics Company has transported more than 2,300 vehicles and outsourced more than 3,000 vehicles. In Changchun alone, more than 10 outsourced vehicle companies have signed transportation agreements with Changjiu Logistics. This ensures a long-term logistics capacity of more than 6.5438+0 million per year. In Changchun, Changjiu Logistics mainly carries commercial vehicles from FAW-Volkswagen, Liu Ma and Toyota. The delivery process is as follows: first, the sales department feeds back the required quantity of goods to the storage and transportation management section, which analyzes the data, calculates the required vehicles, arranges the transportation time, and then issues the transportation plan to Changjiu Logistics or other outsourced vehicle companies. Second, the transport vehicle began to prepare. These include the preparation of workers' work clothes, vehicle inspection and loading. Among them, the outsourcing car needs a Loading Confirmation Sheet. Third, transport out of the warehouse.
Then the teacher led us to visit the open-air warehouse of long-term logistics-the storage, storage and distribution area of commercial vehicles. And since then, the staff have patiently and meticulously explained to us. Its storage area is very large, giving the first impression that it is neat and orderly. Every commercial vehicle is put into storage by a tour guide driver, and the appearance and quality of the vehicle are checked during this process. Every cargo hold of it has a detailed record. After the goods are put into storage, they are numbered, copied into a fixed form by the warehouse keeper, and finally the data are input into the computer. This can ensure the accuracy of stored data and find the needed vehicle conveniently, quickly and accurately. After receiving the sales order, the company will hand it over to the warehouse department for distribution, and the required vehicles will be driven to the warehouse by the tour guide driver and neatly arranged in a row. These vehicles will be placed in commercial vehicle carriers.
Finally, we watched the loading process of commercial vehicles. There are several procedures to be done before the preparatory work, such as installing the landing gear, which can only be manually operated, which is very time-consuming, at least nearly 30 minutes. Each commercial vehicle can transport 10 vehicles, which are loaded in two floors. There we saw two kinds of commercial vehicles, box cars and frame cars. The staff told us that the loading capacity of frame type is higher than that of box type, and frame type will be used more in future transportation.
3. Beijing Railway Logistics
Business processes mainly include receiving, warehousing, delivery, distribution, logistics packaging and information management.
Founded in 2002, this enterprise is a private enterprise, mainly engaged in the express delivery business of auto parts, with warehouses in Beijing and Shanghai. In Jilin province, its market share accounts for 30%-45%.
Walking into Beijing railway logistics, it didn't give people a busy scene.
First, the building manager of the company showed us around the warehouse of the company. There is a lot of storage space there, but it is not clean. The goods are stacked irregularly, and only two or three forklifts are transporting the goods. Some goods show thick dust. There are no neat and tall shelves there. The building manager told us that many logistics enterprises are in this situation now, because of the limitation of capital cost, they have no financial resources to enter the shelves and forklifts, and there is no need to do so for the current cargo transportation volume of this enterprise.
I see that there are many shelf layout boards hanging on some shelves that are not suitable for shelving. Most of the goods are on the ground, with no shelves, only a few wooden pallet and iron trays. There are not many goods there, and the delivery date is the same day. There was no delivery yesterday or earlier, indicating that the delivery of Beijing Railway Logistics was very timely. There, I saw that the electronic scale for weighing goods is literally embedded and very flat, which can be used to weigh up and down goods conveniently. The freight center is next to the entrance of the warehouse, where goods information is learned, entered and sent.
Finally, general manager Shao, the founder of the company, gave us an explanation. And * * * knowledge is two cars, and six or seven people sent it on such a large scale. His story made me feel the hardship and difficulty of starting a business, and his words were fresh in my memory. "To put it mildly, it is a history of entrepreneurship, but it is actually a history of blood and tears." The difficulties of other enterprises' logistics planning are all accumulated and summarized in the practice at the grass-roots level.
Manager Shao also explained to us that the reason why the warehouse withdrew the goods was because the company that used the enterprise service had already withdrawn the goods, and now it is necessary to request the service again, so it is necessary to continue to use those imposition.
Fourth, internship experience
After a week's internship, we gained a lot. Let me know the operation mode and related business of Jilin Mechanical Brake Factory, Changchun Changjiu Logistics Company and Beijing Railway Logistics Company, which makes me have a deeper understanding and understanding of the role of logistics. Only when we leave the campus can we truly appreciate the complexity and hardship of social work. In lectures, the technical terms of logistics and the cases in management often make me feel that the professional knowledge in my mind is vague and lacking, and then I deeply realize how little knowledge I have learned. Without practical experience and skills, the theory and knowledge in books are far from reality. We should be soberly aware that although the logistics industry is a new industry, it has huge development space and market potential and considerable employment prospects. But it is also a hard industry, and the society needs more practical operators, while the demand for talents in management and logistics engineering design is less, but it is very scarce. The growth of these high-level talents also needs to be exercised and explored from the actual operation at the grassroots level, otherwise the professional theory and practice of logistics can not be well combined. Therefore, if we want to struggle in the future logistics work and become a high-level talent in logistics management, we should not only have solid professional knowledge, but also cultivate the spirit of hard work, unity and cooperation, correct our mentality and be practical and serious, which is very helpful for our future employment and job selection.
In this internship, Shao, general manager of Beijing Railway Logistics, always explained to us with a modest attitude. Although he didn't graduate from logistics, he worked in the logistics industry bit by bit. This modest and practical attitude is worth learning. Its entrepreneurial spirit and course are very inspiring and inspiring to me.