Seven, other issues
The above focuses on the problem of sawing machine, and the sawing of the board is only the first process of sheet metal production, as well as the process of leveling and thickening, polishing and polishing, cutting and cutting, cracking and edge grinding, inspection color separation and defect repair. Export plates have strict quality requirements for each process, although the quality requirements of domestic plates can be reduced, but improving the quality of domestic plates is still the top priority of the plate industry.
1, leveling and thickness
The flatness and thickness difference of the sheet should first be taken from the production of the board. Do a good job in the installation and adjustment of the sawing machine and the saw blade, and correctly select the sawing parameters, which can greatly reduce the chance of the thickness of the wool board, improve the yield of the finished wool board, reduce the number of thickened wool boards, and thus reduce the thickness of the thickening board. . This work export plate manufacturer generally does a better job.
However, the requirements for the difference in thickness of the inner sheet are not strict, and the thickness control of the sawing of the board is also poor. In order to reduce the cost, almost no thickening treatment is performed. This is a common problem in the current domestic market. The leveling and thickening machines we produce are available in single head and four heads, and are currently used by export sheet mills.
2, polishing and polishing
At present, the hand-held grinding machine used by the plate manufacturers generally has problems such as the grinding head shaft bearing and the lifting rack sleeve being easily damaged, and the spring rigidity is insufficient. In response to these problems, we have modified the design and achieved good results. Now we have a hand-held grinding machine with a large increase in overall stiffness, spring pressure and rack strength, which improves the defect of the grinding head shaft in the bearing. It improves the dynamic accuracy of the spindle and the bearing life. For example, the large-flower green marble which is difficult to be polished by the general mill can achieve a gloss of more than 80 degrees on our mill. The mill used and equipped with a mobile workbench can grind and saw qualified large plates, which is not common in China.
3, cutting edge cutting
The cutting edge cutting mainly has the problems of right angle error and edge missing. The former is mainly the adjustment of the equipment limit plate and the responsibility of the operator. The latter is related to the sharpness of the saw blade and the performance of the equipment. Our cutting machine uses frequency conversion technology and two-stage feed speed. Depending on the cutting performance of the sheet, the appropriate feed rate can be arbitrarily selected and automatically decelerated when the sheet is cut. Therefore, the occurrence of chipping corners can be avoided.
4, chamfered edge
Most of the thin plates exported require four-sided chamfering, and the current chamfering machine is damaged by the easy entry of the grinding head bearings. We changed the common rotation of the shaft and the grinding head to only the grinding head and the shaft only lifted, and the bearing was placed in the grinding head to improve the bearing life. The type of the grinding head of the original chamfering machine was changed to two grinding heads. The work of chamfering and edging was originally completed by two machines. Now only one machine can be completed by one person.
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