Technical research and project implementation of general-purpose steel drum manufacturing machinery
Jing Zhiping
As the main packaging of petroleum, chemical, grain and oil, metallurgy and soil and livestock products, steel drums have received long-term attention at home and abroad. In order to further improve the manufacturing technology of modern steel drums, it is necessary to study and implement the generalization of steel drum manufacturing machinery, and organize technical research on the following key technical key issues that hinder the continuous improvement of barrel technology.
The traditional special-purpose steel drum manufacturing machinery still in use at home and abroad has been extremely unsuitable for the needs of the "small and medium batch, multi-variety" modern industrial production mode. The demand for steel drums in the market is constantly changing. In the face of such a market, only the generalization of barrel machinery is realized. The key technology is to set up the necessary adjustment links, and use PC programmable advantages to quickly adjust the function parameters such as working position, working size, working pressure, movement speed and cycle program of the power part to adapt to as many steel drums as possible. Manufacturing specifications. The main topics are combined forming technology and equipment for barrel folding, corrugation and ring ribs, flexible stamping line for bucket top and bottom, adjustable universal crimping machine, and flexible edge milling machine, rounding machine, preroll General-purpose steel drum manufacturing machines such as spray glue machine, test leak machine, necking machine and expansion cone machine have been developed. In this way, 200L, 25L, 35L, 50L, 80L, 100L, 140L, 200L, 208L, etc. as specified in GB325 "Steel Barrel" national standard can be entered on a flexible production line, and international standard series such as 20gal, 55gal, etc. The automatic production of open steel drums realizes the generalization of barrel machinery.
The processing precision of the barrel body is matched with the stamping precision of the top of the barrel and the bottom of the barrel. The key of the technology is to replace the rolling and hemming process which is generally used at home and abroad by the method of extrusion and folding of the barrel. The processing precision of the barrel folding edge is increased by ±0.1mm from the rolling ±0.5mm~1mm, and the cold stamping precision (±0.1mm) of the bottom of the barrel is matched, which is the core technology of the steel barrel manufacturing - high sealing The strength of the crimping seal provides the basis.
The sealing strength after the barrel body and the top and bottom of the steel barrel are crimped and sealed is the most important technical specification for steel drum manufacturing. To this end, it is necessary to solve the idealization problem of multi-circle combination curve, involute, Archimedes spiral and other non-circular curves that have plagued the steel drum industry at home and abroad for many years, and establish a functional model and experimental basis for the ideal deformation curve. The three-layer, seven-layer rounded edge of the steel drum with high sealing strength. At the same time, it is necessary to study how to make a reasonable choice of the spindle speed of the crimping machine and the feed speed of the crimping head for the change of the material, material thickness and barrel diameter of the processed steel drum, in order to obtain a stable hemming quality.
In view of the current noise and dust pollution source in the domestic and international barrel making equipment - the edging machine, a thorough technological revolution must be carried out, and the milling machine should be developed to mill and grind. The key to the technology is how to make the barrel for the thickness of about 1mm to withstand the milling force without damage.
The application of hydraulic transmission in steel drum machinery is of vital importance to improve its technical performance. It is an important subject of this application to design and analyze the effectiveness of the anti-interference centralized control hydraulic system for multi-power components in the complex working conditions of barrel machinery.
Compared with the similar equipment of LEIFELD Company of Germany, the general-purpose barrel machine can expand the processing range by 12 times, save equipment investment by 6.7 times, reduce equipment maintenance workload by 2/3, reduce operator 2/3, and improve processing precision by 4 times. Noise reduction of 30%. Reduce high concentration dust pollution to near zero. Practice has proved that the generalization of barrel machinery is the direction of modern steel barrel manufacturing machinery.
[Author] Jing Zhiping, male, born on October 1, 1944. Director of Industrial Automation Research Office, Xi'an Machinery Research Institute, senior engineer. Mechanical design major. It has won a national invention patent (ZL87107259.9), a national new product, a utility model patent (ZL92228675.2 and ZL93212382.1), and a second prize of Xi'an Science and Technology Progress. Published 6 papers in Steel Barrel magazine. Address: No. 44, Caojiaxiang, Dongguan, Xi'an, 710048, telephone.
Note: This is a summary of the project feasibility study report of the “Xi'an Industrial Science and Technology Research Project Declaration Form†filed by the author's unit to the Xi'an Science and Technology Commission. In recent years, the authors have compiled papers such as "Generalization of Steel Barrel Machinery" published in "China Steel Barrel" magazine.
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