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What is the design basis of automatic packaging? beg!

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What is the design basis of automatic packaging? beg! Hurry up! Today, now!

I. vigorously improve the automation degree of process flow

a few years ago, automation technology accounted for only 30% of packaging machinery design, and now it accounts for more than 50%. Microcomputer Design and mechatronics control are widely used. The purpose of improving the automation degree of packaging machinery is to improve productivity; The second is to improve the flexibility and flexibility of the equipment; Third, in order to improve the ability of packaging machinery to complete complex actions, that is, the manipulator is used to complete the packaging process. For example, the packaging of chocolate candy has realized the replacement of the original manual with a manipulator. The automatic design of packaging machinery has the following two main characteristics:

1 Each manipulator is controlled by a separate computer. In order to complete complex packaging actions, a packaging machine needs to be completed by multiple manipulators. When completing the packaging action, under the information and monitoring of the camera controlled by the computer, the manipulator completes the specified action according to the instructions of the computer program to ensure the quality of the packaging

2. High resolution of material and thickness. In the packaging process, the thickness and material changes of packaging materials are not easy to be recognized by human eyes. Therefore, in the design of packaging machinery, computer-controlled cameras and detectors are often used to distinguish the thickness and material changes of packaging materials. The camera has been developed to check and identify the captured pictures by itself and display them on the display screen. At present, the rotating speed of the machine cannot be changed during processing. In the future, the rotating speed should be changed according to the change of materials, so as to control the work in the optimal state, complete the packaging process in the shortest time, and realize automatic cleaning, automatic disinfection and automatic cleaning

Second, improve productivity and reduce process cost

German packaging machinery, especially beverage, beer filling machinery and food packaging machinery, has the characteristics of high speed, complete set, high degree of automation and good reliability. The beverage filling speed is up to 1200 bottles /D, and the cigarette packaging is 12000 pieces /min. Increasing the rotating speed of the machine is a complex problem. The faster the speed, the lower the single piece production cost, but the use area of the plant increases. In addition, the motor speed is also limited, so you can’t go as fast as you want. Generally speaking, increasing the speed by 15% to 20% will bring a series of complex problems. To improve productivity, in addition to increasing the speed, we can also try to solve it from other channels:

1 Continuous working or multi head working mode shall be adopted. The working modes of packaging machinery are intermittent and continuous. When designing, we should strive to design it into continuous work, which will improve the productivity; There can also be multiple production lines in one equipment to produce the same product or several different products, but the reliability must be improved

2. Reduce scrap rate and provide fault analysis system. Waste products cause huge losses to production, not only product losses, but also material losses. Therefore, we should try our best to reduce the scrap rate; When the packaging machinery is sold, a fault analysis system shall also be provided for maintenance services, that is, modal analysis to find faults, or remote diagnosis through inter network, so as to meet the needs of customers to the greatest extent. In the future, the packaging machinery should be further intelligent, that is, the equipment should find and solve the faults by itself, so as to reduce the scrap rate and failure rate and improve the normal productivity

3. Product production machinery and packaging machinery are integrated. Many products are packaged at the end of production, which is also conducive to improving the productivity of products. For example, the chocolate production equipment and packaging equipment produced in Germany are controlled by one system. The key to the integration of the two is to solve the mutual matching in productivity, in which packaging machinery often becomes the bottleneck of production, so it is necessary to provide equipment with different productivity

Third, adapt to changes and design flexible equipment

in order to adapt to the fierce part of the market, the renewal cycle of many packaged products is becoming shorter and shorter. For example, the production of cosmetics changes every three years or even every 18 quarters, and the production volume is large. Therefore, the packaging machinery is required to have good flexibility and flexibility, so that the service life of the packaging machinery is far greater than the service life of the product, so as to meet the economic requirements. In order to make the packaging machinery have good flexibility and flexibility and improve the degree of automation, microcomputer technology, module technology and unit combination must be widely used. In order to adapt to the changes of packaging product varieties and packaging types, the flexibility and flexibility of packaging machinery and equipment are often shown in the following three aspects:

1 Yield flexibility. It can not only package a single product, but also adapt to the packaging of different batches of products

2. Flexibility of construction. The equipment is composed of units. Changing one or several units can adapt to the changes of products

3. Flexibility of supply. Unit combination is adopted to combine all units together for supply, such as candy packaging machine. On a common basis, different units, three feeding ports and four different folding packaging forms are combined, so that one machine can package 8 to 10 different kinds of candy at the same time. It is operated by multiple manipulators. Under the monitoring of a camera, it commands its action, and packages different kinds of candy in different ways according to instructions. If the product changes, just change the program in the camera, so that the equipment has good flexibility and flexibility

IV. provide complete sets of equipment for one-stop service

the design of packaging machinery in Germany provides structural and economical complete system solutions for manufacturers on the premise of user needs, demonstrates the operation to users with computer simulation technology, and makes modifications after soliciting user opinions. When providing users with automatic production line or production line equipment, we pay special attention to the integrity of complete sets of equipment. Whether it is high-tech and high value-added equipment or relatively simple equipment, they are provided according to the matching requirements

German packaging machinery manufacturers will also provide complete sets of equipment as their goal. For example, a beverage filling line has more than 200 microcomputer components, many pipelines and display screens, and more than 100 software programs to control various packaging actions. In order to meet the production rate of 1200 bottles /D, two lines must work together. Therefore, the production of the whole beverage filling line needs to occupy half of the football field, and all equipment is required to be in one manufacturer. Think of a major weakness in China’s current packaging machinery production is that there are more single machines and less complete assembly lines; There are many main machines, few auxiliary machines and poor compatibility. This practice of Germany is worthy of our reference

v. computer simulation design technology is widely used

with the continuous acceleration of new product development, computer simulation technology is widely used in German packaging machinery design, that is, various machine elements are stored in the computer in the form of database, the drawings are digitized and input into the computer, and the computer can automatically synthesize them into three-dimensional models. Then input the actual production data and indicators and various possible faults. The computer three-dimensional model can operate according to the real working situation, and demonstrate the productivity that can be achieved, the number of waste products, whether each 51 section of the production line can match the production, and where the bottleneck is, so that the customer can see at a glance according to the curve displayed on the display screen, The model can be modified according to the opinions of customers. The speed of computer synthesis is very fast, so the modification work is fast and convenient until it satisfies the customer or designer. Using computer simulation design technology, the development and design cycle of packaging machinery is greatly shortened

packaging machinery design should not only pay attention to its function and efficiency, but also pay attention to its economy. However, the economy is not entirely the cost of mechanical equipment itself, but more importantly, the operating cost, because the depreciation of equipment accounts for only 6% – 8% of the cost, and the rest is the operating cost

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