Perfection of Rebirth

Chapter 806 Stamping Production Line

"This kind of large multi-station press has different stages in different countries, from the 70s to the late 90s. High cost, high efficiency, and poor flexibility are the main characteristics of this kind of press.

In the early 80s, Jier Machine Tool introduced a full set of VERSON technology; Yihe, Shanghe, and QQHE II machine tools respectively introduced part of Komatsu’s molding products, providing tens of A mechanical sheet metal stamping production line.

It can be said that the products at this stage are at the level generally mastered by domestic machine tool factories.” Pi Wei told Jiang Hui the situation of the second stage of the development of the stamping production line in one breath.

"The press is a very basic piece of equipment. It is not only used in the automobile industry, but also in other industries. Liao Yun, please make a note and let Mr. Guan see if there is a suitable opportunity. We will acquire a stamping equipment company this year. The manufacturer is back," Jiang Hui said to Liao Yun who was beside him after hearing Pi Wei's words.

In terms of machinery and equipment, domestic technology generally lags behind that of Europe and the United States. The technology and experience accumulated over a hundred years is really not something you can surpass in a day or two. Every day you think about overtaking on curves, where are there so many curves? ?
After finally encountering the once-in-a-decade financial crisis, Jiang Hui definitely took this opportunity to buy, buy, and buy desperately!

If you miss this time, you may not be able to buy it even if you have money in the future.

"You continue," Jiang Hui signaled Pi Wei to continue the introduction.

"Okay, Mr. Jiang. The third stage is the widespread application of electronic technology on the stamping line. For stand-alone connection, with the development of electronic technology, servo-driven loading and unloading devices have been widely used, and there have been emerging Electronic two-coordinate feeding device".

"During this period, the speed of the press has been significantly improved, and the production efficiency and tact have also been significantly improved, such as ADC technology, self-propelled mold clamp, tonnage monitoring, temperature monitoring, automatic adjustment of the air pressure of the balancer! Air cushion air pressure Automatic adjustment, automatic adjustment of mold height, automatic adjustment of air cushion stroke and other technologies have also been widely used.”

"Then comes the fourth stage, which is the latest stage now. With the emergence of new automated stamping lines, at present, it can be considered that stamping technology has entered the fourth stage of development.

The remodeling of automobiles is becoming more and more frequent, and the individual needs of the automobile market are also increasing, so the requirements for the flexibility of automobile production are also getting higher and higher.

In terms of stand-alone connection, robot technology is becoming more and more perfect, its cost is getting lower and lower, its use is becoming more and more popular, its flexibility is showing its superiority more and more, and more and more stamping lines are beginning to be equipped with robot automation systems.”

"Does our production line belong to the third stage or the fourth stage?" Jiang Hui asked.

"Actually not, it's between the third stage and the fourth stage." Pi Wei's answer was a bit beyond Jiang Hui's expectation.

"Oh? Why?" Jiang Hui asked.

"In terms of large multi-station, CROSSBAR presses are more and more limited due to the high manufacturing difficulty, high cost, high requirements on mold manufacturing technology and quality, and restricted flexibility.

At this time, a new type of automated stamping line between CROSSBAR and stand-alone automated line began to be put into use, and this is the stamping line we use,” Pi Wei explained.

"The number of strokes of this kind of press is high. For large presses, the number of continuous punches can reach 20 to 22 times per minute, while in the first stage of the stamping production line, the press can only punch five or six times per minute," see Jiang Hui Without continuing to ask himself, Pi Wei went on to introduce the stamping production line used by Guanghui Automobile.

"There is a fast feeding device between the presses. This feeding device has both similarities and differences with the feeding form of CROSSBAR. The similarity is that its function is exactly the same as that of CROSSBAR; the difference is that CROSSBAR is the only one in the whole line. A feeding device is used for feeding the whole line, and each unit of this feeding device is independent.

For the CROSSBAR multi-station, the presses share one drive shaft; for the fast feeding line, each press has its own drive shaft, and the press is a single operation.The production tempo is lower than that of CROSSBAR, but it can still reach 12-14 pieces per minute," Pi Wei continued.

"The stamping machine itself can punch 20 to 22 times per minute, but the transmission shaft can only transfer 12 to 14 parts. Can I understand this?" Jiang Hui grasped the key to the problem at once.

"Indeed, under this matching mode, the one-time investment can be greatly reduced, and the flexibility of the production line has also been greatly improved. American automobile factories have already used this technology on a large scale," Pi Wei said.

For stamping workshops, production equipment is the most obvious one-time investment, and the cost reduction is very obvious when using equipment that does not require such high precision.

However, there is another one-time investment that is actually very important, and that is the mold.

In modern industrial production, the mold is an important process equipment for the production of various industrial products. It shapes the raw materials in a certain way with its specific shape.

In the automobile industry, among various types of automobiles, an average model needs about 2000 sets of stamping dies, including nearly 300 sets of large and medium-sized panel dies.

Mold has become an important means of contemporary industrial production and one of the development directions of technology.The development of varieties of modern industrial products and the improvement of production efficiency depend to a large extent on the development and technical level of molds.

At present, molds have become one of the important symbols to measure a country's manufacturing level
Strictly speaking, the mold is not a one-time investment in the construction of the factory building, but the reason why the mold is regarded as a one-time investment is because the molds of each project are different and have a very strong uniqueness.

In other words, if Brilliant Automobile uses the fourth-stage stamping production line technology, the mold investment for each model will be very high in the future due to the very high requirements for molds.

Therefore, when calculating the one-time investment cost, the project team also took this impact into account.

"You are the most professional, as long as you think this method is the most suitable, I have no objection, but sometimes we can't blindly make our production line not advanced enough for the sake of saving money. must be fully taken into account,” Jiang Hui said.

Under the leadership of Kato and Pi Wei, Jiang Hui walked around the stamping workshop.

Since the installation of the crane was only arranged today, all kinds of large-scale stamping machines have not yet officially entered the site, so the stamping workshop is not much to look at for the time being.

"Thank you Mr. Jiang for your trust. We will fully consider this issue in the future. Mr. Jiang, let's visit the welding workshop next," Pi Wei said, pointing to a workshop next to him.

(End of this chapter)