In the current competitive market development, the market demand for mobile phones is like a huge cake, waiting for the major communication vendors to divide up. However, because the annual demand of the market is certain, and in order to compete for as much market share as possible, the manufacturers have tried their best to launch a variety of mobile phones to attract consumers, which determines that each mobile phone life cycle must be very The short, mobile phone market does not allow a mobile phone to have a long life cycle, if a manufacturer can not quickly launch a new model, its market share will quickly decrease. As a late entrant in the mobile phone market, the company must expand its sales, increase its sales, and increase its sales in order to gain a share in the existing mobile phone market. Your own market share. In order to meet the market demand for various mobile phone models, we must make full use of our own production plants and equipment to quickly realize the flexible manufacturing of multiple mobile phones, reduce the investment in production equipment, save production costs, and become the company's competitive position in the mobile phone market. An important strategy for survival and development.
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Analysis of characteristics of mobile phone production process
Although the mobile phones seen in the market are completely different, the basic material composition and basic production process of each mobile phone are constantly changing. In summary, the style of the mobile phone is basically nothing more than three basic styles. : Clamshell mobile phones, folding mobile phones, and straight-line mobile phones. Let's analyze the characteristics of the three mobile phone production processes.
1. Clamshell phones (such as Model A and Model B)
(1) Composition materials: circuit board, antenna, microphone, earpiece, vibrator, LCD, front cover, back cover, flip cover, battery, keyboard, other auxiliary materials;
(2) The basic production process is shown in Figure 1-1:
The clamshell phone is mainly composed of five assembly and one test and inspection production line, each production
Lines and independent of each other have certain causal links.
2. Folding mobile phone (such as Model E)
(1) Composition materials: circuit board, antenna, microphone, earpiece, vibrator, LCD, flip inner case, flip cover, upper cover, lower cover, battery, keyboard, other auxiliary materials;
(2) The basic production process is shown in Figure 1-2:
The folding mobile phone is mainly composed of six assembly and one test and test production line. Each production line is independent of each other and has certain causal links.
3. Straight phone (such as Model C and Model D)
(1) Composition materials: circuit board, antenna, microphone, earpiece, vibrator, LCD, front cover,
Back cover, battery, keyboard, other auxiliary materials;
(2) Basic production process
It can be seen from the above brief introduction that no matter what kind of mobile phone, its material composition and production process are similar, the only difference is the shape and quantity of the material, and the organization of the production process. Therefore, in the design of the new mobile phone production system, according to the commonality of the mobile phone production process, it is feasible to realize flexible manufacturing of a plurality of mobile phones on one production line.
New mobile phone production system
1. Basic requirements for the production process of the new mobile phone production system
The production of mobile phones, like the production of any other industrial products, requires a certain production process. That is, from the start of raw materials, after a series of processing, until the finished mobile phone is produced, the key link to improve labor productivity lies in the rationality of the specific processing of the product.
Reasonable organization of the mobile phone production process means that the plane layout of the mobile phone production line and the production time of the mobile phone are well combined, so that the raw materials and semi-finished products of the mobile phone pass through the various stages of the production line with the shortest transportation route and the fastest speed, so that the company's Manpower and material resources are fully utilized to avoid waste of production space and time, and truly achieve low-input, high-output intensive production mode for mobile phone production, while improving efficiency, ensuring high-quality product quality and enabling the company's production capacity. Take the next step and meet the basic design requirements of the new production system.
2. Engineering analysis of mobile phone production
From the previous section, we can basically determine how the production process of the new mobile phone production system is organized. With the basic organizational ideas, the following must first study the engineering analysis of mobile phone production, and understand the details of each process of mobile phone production. Then, according to the mobile phone production process determined in the previous section, we can discuss how to arrange each production line in space, how to implement it in the time organization of the production line, how to arrange and organize the production line, and so on.
The engineering analysis of mobile phone production is a method of analyzing and investigating a series of production activities of mobile phones from raw materials to finished products. The process referred to here is the basic links of the mobile phone production process, namely processing, handling, inspection, and stagnation. Only processing is the creation of value, and handling, inspection and stagnation are indispensable in the production process. The labor time spent by the latter three should be minimized to shorten the production cycle, reduce work-in-progress and improve production efficiency. To improve economic efficiency, this is the ultimate goal of engineering analysis. Specifically:
â— Through the analysis of these four basic processes, we can grasp the logistics status of mobile phone parts and semi-finished products as a whole and find out the improvement points;
â— Improve equipment configuration to make logistics smooth;
â— Study the balance between processes, and strive to shorten the production cycle, reduce work-in-progress, and reduce personnel and capital occupation;
â— Provide information for material planning, rationalization of production processes and quality management;
3. Organization design of mobile phone production line
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(1) Choice of organization form of production line
The production line is an advanced production organization. It arranges the various processes according to the process sequence of the production of the product (mobile phone), so that the product (mobile phone) is processed continuously and rhythmically through each process at a certain speed until Produce finished products.
â— According to the results of the process analysis, the production of mobile phones meets the requirements of the organization design of the production line, and has the characteristics of a typical production line:
â— Each process has a high degree of specialization, and each process is only fixed for one or a few types of operations;
â— The process is closed, the process is arranged in the order of the process, and the product moves according to the one-way transportation route;
â— Produce according to the specified beat;
â— The production capacity of each process on the assembly line is balanced and proportional.
Before establishing a production line, it is necessary to make a choice of the organization form of the production line. Whether it is correct or not, there is a great relationship between the smooth operation of the production line after the production line is put into production and the good economic benefits.
In view of the actual situation of the company and some characteristics of mobile phone production, the new production line should choose the following form:
1. According to whether the production object moves, it can be divided into fixed flow production line and mobile flow production line. In the process of re-production of mobile phones, the mobile phone production line should be selected during the process of re-production;
2. According to the number of production varieties, it can be divided into single-variable production line and multi-varietal production line. In order to make the new production line suitable for the flexible manufacturing of a variety of mobile phones, a variety of production lines should be selected;
3. According to the rotation method, it can be divided into variable pipeline and mixed pipeline. The production and processing of different styles of mobile phones may not be arranged at the same time due to the difference in raw materials and processing technology. Variable flow lines should be used;
4. According to the continuous degree of production, it can be divided into continuous flow production line and intermittent flow production line; from the process analysis chart in the previous section, it can be seen that the processing time between the processes is not equal, which will inevitably lead to intermittent phenomena between processes. Intermittent flow production line should be selected;
5. According to the way of achieving rhythm, it can be divided into forced beat production line and free beat production line. Because the operation content of each process of the mobile phone is relatively simple and the division of labor is too fine, the worker operation is highly specialized, simple, and rigid. If the forced beat production line is selected, the workers will be prone to fatigue, work interest decline, high turnover rate and increased operational error rate and other social and psychological consequences. It also contradicts Lucent's advocacy of a free and conscious corporate culture. Therefore, a free-beat production line should be used to appropriately increase buffered products between work centers to eliminate the psychological pressure caused by forced beats. Compared to the forced beat production line, these buffer stocks allow workers to work at their own pace throughout the production line, with intermittent intervals to handle unforeseen failures. Thereby improving the job satisfaction of the workers, increasing the productivity and greatly reducing the turnover rate of the workers;
6. According to the degree of mechanization, it can be divided into three types of production lines: manual, mechanized and automated. The manual flow production line is mainly used for assembly and production of products, and most of the production of mobile phones is assembly work, so manual flow production lines should be selected;
7. According to the type of transportation equipment, it can be divided into a production line without special transportation equipment, a production line with non-motorized special transportation equipment and a production line for mechanized transportation equipment. As can be seen from the process flow chart, the previous process basically provides semi-finished products for the next process. The volume and weight of these semi-finished products are very small, so the semi-finished products can be directly transported by hand to the next process. A production line with no special transport equipment should be used;
According to the above analysis, the organization form of the production line of the new production system is shown in Figure 2-2.
Conclusion
The specific daily output curve is shown in Figure 3-1:
Through the above curve you can know:
1. During the initial run-in period, as the various stages of the new production system require a period of adaptation, and the Model D is a new model of mobile phone that was just put into production in July, workers need a period of training and learning. Gradually improve the proficiency of the operation, the production capacity does not reach the daily output like design. By the same token, when the Model E was put into production in August, it was also a few days of running-in, gradually increasing the daily output per day.
2. However, due to the very flexible adaptability of the designed production system, and according to the actual problems encountered, the various steps of the production system have been adjusted accordingly to make it more efficient. After more than a week of daily production, the first is that Model A meets the design requirements, and then Model D meets the design requirements.
3. The new production system not only achieved the original design goals, but also systematically improved, the workers gradually became more skilled, and the task was overfulfilled. The maximum output of the day reached 8,800.
4. From 7/24 to 8/5, during the period when Model A was discontinued due to the interruption of the supply of raw materials, the production capacity of Model A was quickly converted into the production capacity of Model D. After only 3 days of adaptation, From 1800 Nissan to 2,200.
5. It can be clearly seen from the daily output curve that the daily production curve is very flat, which indicates that the operation of the new production system is very stable and the daily output can be completed according to the production plan.
Through the above analysis, the research of this subject has basically reached the expected goal, expanded the production capacity, improved the quality of the products, met the urgent needs of China Telecom for mobile phones, and brought considerable profits to the company. The company and China Telecom achieved a win-win situation.
This topic mainly studies how to arrange the overall layout of the production workshop, how to choose the appropriate time organization method for different process. Through the process analysis and process analysis of the mobile phone production process, the process of mobile phone production was completed, and the layout design of the mobile phone production line was completed, and a variety of mobile phones were produced on one production line, which improved production. System flexibility, adaptability, and reconfiguration. This also cites the methods of job measurement and time study, completes the process flow analysis diagram, and provides data support for determining the number of workers required for the beat of the production line. The establishment of such a production system does not require much investment, and the investment in the entire production system is only a simple tool and workbench, and is particularly suitable for use by small and medium-sized manufacturing enterprises of similar products similar to the mobile phone production process.
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