Anime card die-cutting machine from manual press to intelligent servo control
Die cutting is the most important part of the card product manufacturing process. It determines the accuracy and esthetics of the product. Its technological evolution has always revolved around three major goals: to make things more efficient, to make things more accurate, and to make things feasible in more cases. The evolution of printing technology has perfectly matched the needs of the industry, from the early manual printing press to the current mainstream intelligent drive die-cutting equipment. As a device focusing on card production, the animation card die-cutting machine is a good example of this evolution.
In the past, all the cutting was done by manual press, pressed by hand. This method is limited by the number of manual operators. Not only is the efficiency low, but the output of a single shift is usually only 500 sheets. The die-cutting accuracy depends entirely on the operator's experience, and the error is usually between 1 and 2 mm. This method cannot meet the production needs of products with high requirements for pattern integrity and size consistency, such as animation cards and game cards. Moreover, the manual press can only process ordinary thin paper. It is difficult to cut composite materials such as film and soft magnetic sheets, and it is difficult to make more card products.
With the rapid development of the brush industry, the hydraulic transmission system has gradually replaced manual operation and become the main driving mode of the die-cutting machine. Hydraulic transmission uses the pressure of hydraulic oil to transmit power. Compared with manual punch, its advantages are very important. First, its output power is very large, so it can easily handle the die-cutting needs of thick and hard materials. It can also be used with cardboard, PVC film, and other materials commonly used in cards. Second, it has a high degree of automation. Continuous die cutting can be achieved through simple mechanical control.
With the advent of the era of intelligent manufacturing, the servo drive system has become the main power source of high-end card production equipment such as animation card die-cutting machines with its characteristics of precision, high efficiency, and energy saving. The servo driver can monitor and change the motion parameters in real time due to the closed-loop control of the servo motor and the driver. Thus, the precise control of the whole process of feeding, die-cutting, and collecting is realized. Compared with hydraulic drive, the technical progress of servo drive systems is reflected in many aspects: first, the efficiency of machine adjustment and mold change is greatly improved. The servo-driven die-cutting machine only needs 2-3 minutes to change the mold, and the machine adjustment for order switching only needs 15 minutes, which is more than 60% faster than the hydraulic drive system. This makes it very suitable for small batch orders in the printing industry. Second, the feeding positioning accuracy is improved. The stepping precision feeding technology and the visual correction and positioning system of the layout work together to stabilize the die-cutting accuracy between ±0.01 and ±0.03 mm. It solves the problem of size deviation when die-cutting complex patterns. Thirdly, it has expanded the range of materials that can be used. Because the drive force and speed settings can be changed precisely, it can easily handle different materials.
Cost-saving benefits
In the printing industry, one of the most important factors affecting production costs is the energy consumption of equipment. The transmission system is the main power source of the card die-cutting machine. The amount of energy consumption directly affects the manufacturing cost of unit products. There is a big difference between the hydraulic drive system and the servo drive system of the animation card die-cutting machine in the way of energy utilization. Over time, this difference will become a huge cost gap due to the accumulation of production. This is a thorough analysis based on real measurement data and industry cases.
Hydraulic drive systems consume a lot of energy due to the way they work. In a traditional hydraulic-driven die-cutting machine, a constant-speed motor powers the hydraulic pump. The motor is always running, whether the machine is on or not. Even in non-full load conditions such as pressing and cutting and pressure holding, it still needs to consume 20% to 30% of the rated power. When the hydraulic system changes the pressure through the overflow valve, a large amount of high-pressure oil is not effectively used but directly returns to the oil tank. This causes a large amount of throttling loss, accounting for 30% to 50% of the total energy consumption. For example, a 7.5 kW hydraulic-driven animation card die-cutting machine consumes about 45-50 kWh of electricity when working 8 hours a day. If it works 300 days a year and the industrial electricity price is 0.8 yuan/kWh, the average annual electricity consumption cost is about 10,800-12,000 yuan.
The core concept of the servo drive system is "power on demand," which can greatly reduce energy consumption. The servo drive system can change the motor speed and output power in real time according to the needs of the die-cutting process. For example, during the die-cutting execution stage, the motor runs at rated power to provide sufficient driving force. During the feeding gap and pressure-holding stages, the motor runs at a low speed or stops completely, using only 1% to 10% of the rated power. At the same time, the servo system does not need to adjust the pressure through the overflow valve but directly adjusts the output of the pump through closed-loop control, completely eliminating the throttling loss. Actual measurement data shows that the servo-driven animation card die-cutting machine with the same power (7.5 KW) only consumes 18-25 degrees of electricity for 8 hours of work per day. It saves 40%-60% of electricity compared with the hydraulic drive system. According to the same calculation standard, the average annual electricity cost can be saved by 4320-6000 yuan, and the annual electricity cost can be saved by 6480-6000 yuan for a single device. For a medium-sized printing plant with 10 die-cutting machines, the use of a servo drive system can save 60,000 to 80,000 yuan.
Servo drive systems can also save money for printing plants in other ways, such as by improving production efficiency and reducing material loss. Servo drives are fast-responding, and die-cutting speed is 20% to 30% faster than hydraulic drives. The single-shift production capacity can be increased from 8,000 sheets of hydraulic drive to 10,000 to 12,000 sheets. With the same capacity demand, the number of equipment investments can be less. On the other hand, the accurate feeding and positioning control reduces the die-cutting scrap rate from 1.5% to 2% of hydraulic drive to 0.3% to 0.5%. The material cost of each card is 0.1 yuan, and the annual production capacity of one piece of equipment is 3 million cards. This means that the cost of material loss can be reduced by 30,000 to 45,000 yuan per year. The servo drive system can help printing plants reduce the cost of die-cutting unit cards by 15% to 20% by saving direct and indirect energy costs. This makes the company more competitive in the market.
It should be noted that the initial cost of servo-driven die-cutting machines is 10% to 20% higher than that of hydraulic-driven die-cutting machines. However, if the energy-saving and cost-saving benefits are added, the investment recovery period is usually only 1 to 1.5 years. The energy-saving benefits and flexible production capacity of the servo drive system will help animation card and game card printing plants, which are mainly small-batch and multi-batch, recover their investment faster and reduce production costs.
Why servo systems are better suited for complex die-cut patterns on game cards
The main competitiveness of game cards, animation cards, and other products is reflected in the exquisite pattern design and high-quality printing. The die-cutting precision of complex patterns directly affects the appearance quality and market acceptance of products. When die-cutting complex patterns, servo drive systems are much better than hydraulic drive systems because they can control motion very precisely, respond quickly, and provide stable power output. Especially in the following four key areas:
First, high-precision feeding and positioning control ensures the integrity of complex patterns. The complex designs on game cards often have many fine lines, small holes, and irregular edges. For die-cutting, these patterns require very precise positioning. If the deviation exceeds 0.05 mm, the pattern will be incomplete and the edges will be misaligned. The stepping precision feeding technology is adopted, and the servo drive system can realize the segmented precision feeding. The visual correction and positioning system can detect the change of material position in real time and make dynamic adjustments. The compensation response time is less than 50 milliseconds, ensuring that the die-cutting knife is perfectly aligned with the pattern. Due to the slow response speed of the hydraulic drive system, real-time correction cannot be performed. The feeding deviation is usually greater than ±0.1 mm, which makes it difficult to meet the die-cutting needs of complex patterns. Actual production data shows that the pass rate of complex pattern die-cutting can be maintained at more than 99.5% for the animation card die-cutting machine using the servo drive system. The pass rate is 4 to 5 percentage points higher than that of the hydraulic drive system.
Second, the driving force output is stable, and there is no burr in the die-cutting work. When cutting complex patterns, the cutter needs to be able to accurately cut different forces at different points to avoid problems such as burrs and tears. The servo drive system changes the drive force parameters through closed-loop control to ensure that the force is gentle and does not damage the material when cutting thin lines, and the force is strong and stable when cutting thick and hard materials. The 7.5 kW servo motor can work well at low speed, which helps to avoid the quality problems of die cutting caused by power fluctuation. The hydraulic drive system has problems such as inaccurate adjustment of driving force and poor working performance. When die-cutting complex shapes, it is easy to have local omissions or over-cutting, resulting in a burr rate of 3% to 5% on the edge of the product. This means that more manual trimming is required, which greatly increases the production cost.
Third, it can change the motion parameters to meet the needs of different complex patterns. Different types of game cards and anime cards vary greatly in terms of pattern size, complexity, and specifications. This means that the die-cutting equipment needs to be able to easily change its parameters. The servo drive system can quickly change the core settings, such as feeding speed, die-cutting frequency, and tool stroke, through the control system. Moreover, it can adapt to the die-cutting needs of different patterns without making major changes to the mechanical structure. This is because die-cut products do not need to be nailed or connected, so the finished products can be cut off directly and accurately, making the appearance quality of complex pattern products better. To change the parameters of the hydraulic drive system, the mechanical valve must be manually adjusted. Not only is it time-consuming and laborious, and the accuracy is not high, but it is also powerless for complex patterns with small batches and multiple varieties.
Fourth, the quick removal of waste and collection of finished products helps the production process. When cutting complex patterns, a large amount of strange waste is generated. If not cleaned up in time, it is easy to wrap around the machine or affect the next die-cutting. The servo-driven animation card die-cutting machine can complete die-cutting and waste removal at the same time by precisely controlling the movement of the machine. This ensures the continuity of the production process. At the same time, according to the production needs of complex pattern products, two finished product collection methods, sequential collection and classified collection, can be selected to avoid wear or confusion of finished products during the collection process. Hydraulic drive systems are not efficient in material collection and waste removal due to poor motion control. This can lead to production stops, which reduces the efficiency and quality of complex pattern die-cutting.
Conclusion
With the rapid development of card die-cutting technology, the servo drive system has replaced the hydraulic drive system as the main drive scheme of animation card die-cutting machines. This is because the printing industry needs intelligent and flexible production methods. Through in-depth investigation of the technical characteristics and actual application data, the following main conclusions can be drawn:
1. Servo drive systems are much better than hydraulic drive systems in production efficiency and adaptability to different situations. The servo-driven die-cutting machine only needs 2-3 minutes to change the mold and 15 minutes to change the single-piece machine. This is more than 60% faster than hydraulic drive systems. It works well in the printing industry, whether it is a small batch or a large batch. Its stepping precision feeding and visual correction positioning technology make the die-cutting accuracy stable at ±0.01-±0.03 mm, which is 70% higher than the ±0.1 mm accuracy of the hydraulic drive system. The pass rate of complex pattern die-cutting is over 99.5%.
2. The servo drive system can save a lot of money and energy. Servo-driven die-cutting machines save 40% to 60% more electricity than hydraulic-driven die-cutting machines, although both are 7.5 kW. The average annual energy cost savings per unit is more than 6,000 yuan. The scrap rate has dropped from 1.5%~2% to 0.3%~0.5%, and the average annual material loss cost of a single device has been reduced by 30,000~45,000 yuan. The overall cost has been reduced by 15% to 20%, and the investment recovery period is only 1 to 1.5 years.
3. The best way to make cards with complex patterns is to use a servo drive system. It can control the driving force very precisely, respond quickly, and have good motion coordination, so it can perfectly solve the problems of accuracy, quality, and efficiency of die-cutting complex patterns such as game cards and animation cards. Moreover, it is applicable to various materials such as paper, film, and soft magnetic sheets. The entire production process of complex pattern cards can be optimized by coordinating the removal of waste and the collection of finished products, as well as the online back-end packaging of products.
For printing companies that want to sell their products overseas, the use of servo-driven cartoon card die-cutting machines can not only improve product quality and speed up production but also make companies more competitive by reducing costs and energy use. As the printing industry's requirements for card product quality and production speed are getting higher and higher, the servo drive system will pay more attention to intelligent control and multi-process collaborative operation. This will make card die-cutting production more accurate and cheaper.