Plate Deburring Machine - Overcoming the Difficulty of Inner Corners of Bent Plates, Enabling "No Dead Ends" in Kitchenware and Cabinet Processing

In the processing of stainless steel kitchenware (such as sinks, stove panels, and oven liners) and cabinet plates (such as file cabinet plates, wardrobe side plates, and storage cabinet door panels), after stamping and bending processes, burrs and flash are easily generated on the edges, especially the inner corners after bending. The removal of burrs in these parts has always been a difficult problem in the industry. After the plate is bent at 90°, 120°, or 135°, a narrow gap (often less than 2mm in width) will be formed at the inner corner. During manual grinding, it is difficult for workers' fingers to go deep into the gap, and they can only barely process the edge of the inner corner with sandpaper or a small scraper, resulting in the burrs in the gap not being completely removed. Some workers will use excessive force to remove stubborn burrs, which instead scratches the plate surface and leaves obvious scratches. The grinding heads of ordinary plate deburring equipment are mostly rigid fixed structures, which cannot flexibly adjust the grinding direction according to the angle of the inner corner. Either the burrs remain because the grinding head cannot go deep into the inner corner, or the grinding head is in forced contact with the inner corner, scratching the metal surface at the bent part and damaging the structural integrity of the plate. These problems will cause a series of hidden dangers in the subsequent processes: when installing the sealing strip, the residual burrs will scratch the sealing strip, leading to water leakage and air leakage in the sink and oven; when splicing the cabinet plates, the inner corner burrs will affect the tightness of the splicing, resulting in the cabinet shaking and poor sealing, and may also scratch the user's hands during use.
Our plate deburring machine is specially designed to solve the problem of burrs at the inner corners of bent plates. Through a unique grinding structure and intelligent control, it realizes "no dead ends" processing of plates. The equipment is equipped with an inner corner grinding unit with flexibly adjustable angles. The core component of this unit is an elastic grinding wheel made of high-elasticity and wear-resistant material. The grinding wheel has good deformability and can flexibly adjust its shape according to the angle of the bent inner corner of the plate (common angles such as 90°, 120°, and 135°). Like a "small brush fitting the inner corner", it can go deep into the narrow inner corner gap, fully contact with the burrs, and completely remove the stubborn burrs in the gap. At the same time, the grinding unit has a built-in pressure buffer device, which can sense the resistance change during the grinding process in real time and automatically adjust the grinding force (force control range 0.08-0.3N). When the grinding head contacts the plate surface, it will automatically reduce the force to avoid deformation or surface scratches at the bent part due to excessive force, ensuring that the plate surface remains flat and smooth at all times.
To solve the problem of burrs on the outer edge of the plate, the equipment is also equipped with a multi-directional linkage grinding unit. This unit can work in collaboration with the inner corner grinding unit. While processing the burrs at the inner corner, it can simultaneously perform deburring treatment on the outer edge, folded edge, and other parts of the plate. There is no need for secondary positioning and processing of the plate, which greatly improves the processing efficiency. According to actual testing, the surface smoothness of the inner corner of the plate processed by this equipment can reach Ra0.8μm, and there is no sense of stabbing when touched by hand, which fully meets the safety standards for food-contact kitchenware and household cabinets. When installing the sealing strip in the subsequent process, the sealing strip fits closely with the plate, and the water leakage rate of the sink and oven is significantly reduced from the original 15% to less than 0.5%. After a large stainless steel kitchenware manufacturer introduced this equipment, the inner corner grinding efficiency was increased by 4 times compared with manual grinding. The inner corner grinding process that originally required 6 workers can now be completed by only 2 workers operating the equipment. At the same time, due to the complete removal of burrs and no surface scratches, the number of workers' hand scratch accidents has dropped from 4 per month to 0, and the number of product after-sales complaints has decreased by 70%, significantly enhancing the enterprise's brand reputation and market competitiveness.
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