Edge-rolling occluding cutter forming process

Abstract

The invention discloses an edge-rolling occluding cutter forming process which totally comprises four steps each of which is finished by a matched forming cutter. The forming process specifically comprises the following steps of: 1, bending the flange at the end cover of a dish-washing machine liner for 45 degrees; 2, rolling the flanges of the end cover of the dish-washing machine liner and the cylindrical body of the dish-washing machine liner into a whole body in a vertical state; 3, rolling the vertical edges which are rolled into a whole body to form a 45-degree inclined angle, thereby being beneficial to the final forming; and 4, compacting the flanges to finally finish the occluding forming step. The edge-rolling occluding cutter forming process is characterized in that the straight face of the edge of the third forming cutter used in the step 3 in the forming process is an inclined plane having an angle of 3-45 degrees with a vertical line. The forming process has the beneficial effects that the percent of pass of liner products of dish-washing machines reaches 100%; and in economic benefit, given that the dish-washing machine yield of one dish-washing machine manufacturerin China is 1 million units per year at present and the defective rate is reduced by 3% by adoption of the forming process provided by the invention, 30 thousand units of defective products can be reduced for one manufacturer every year because of the adoption of the new process, and the economic loss is reduced by 9 million yuan per year if the cost of one unit is 300 yuan.

Description

technical field [0001] The invention relates to a forming process of seaming knives for rolling edges, in particular to a forming process for forming seaming knives in seaming machines used in molding production of dishwasher liners. Background technique [0002] At present, most of the undercutting machines used in the molding production of dishwasher liners are products from the Italian Meloni company. The undercutting molding process is as follows: figure 1 As shown, it is completed in four steps, and each step is completed with a forming knife. The first step: use the first forming knife to bend the edge of the end cover of the dishwasher liner by 45 degrees; the second step: use the second forming knife Press the forming knife to press the end cover of the dishwasher liner and the folding edge of the dishwasher liner cylinder together to form a vertical state; the third step: use the third forming knife to press the vertical edge pressed together into a 45-degree angle ...

AI Technical Summary

Problems solved by technology

However, with such a process, 3%-5% of scrap products often appear in the production process. The forming steps and causes of the problems: the forming steps of the problems are the third step, when the hob bends the vertical edge into a 45-degree inclination , due to the elasticity of the stainless steel plate, the free edge on one side of the end cover cannot reach 45 degrees, sometimes it does not exceed 0 degrees, such as figure 2 As shown, there is a problem in the fourth step of molding at this time

Images