How to design precision stamping parts molds better? Dongguan Hardware tells you the mystery

How to design precision stamping parts molds better? Dongguan Hardware tells you the mystery! The maintenance of the continuous mold of precision stamping parts must be done carefully and patiently step by step, and must not be blindly engaged. When repairing the mold due to failure, a material belt must be attached to facilitate the inquiry of the problem. Open the mold, compare the material belt, check the mold condition, confirm the cause of the failure, find out the problem, and then clean the mold before removing the mold. When removing the mold, the force must be even. For the mold structure where the stripping spring is between the fixed plate and the stripping plate and the stripping spring is directly on the inner guide column, the removal of the stripping plate should ensure that the stripping plate is balanced and ejected. The inclination of the stripper plate may cause the break of the punch in the mold. (1) Maintenance of the punch and concave mold When disassembling the punch and concave mold, pay attention to the original condition of the mold, so as to facilitate the restoration during subsequent mold assembly, and there is a need for padding or displacement. Engrave the thickness of the gasket on the part and make a record. To replace the punch, try to insert the stripping block and whether the die is smooth, and whether the gap between the test insert and the die is uniform, and whether the gap between the insert and the punch is even to replace the die. Uniformity. After grinding the punch, the punch needs to be cushioned to reach the required length. Check whether the effective length of the punch is sufficient. To replace the broken punch, find out the reason, and check whether the corresponding concave mold is at the same time If there is chipping, do you need to grind the cutting edge. Assemble the punch to check whether the gap between the punch and the fixed block or the fixed plate is sufficient, and if there is a press block, check whether there is room for movement. The assembling die should be placed horizontally, Then use a flat iron block to place it on the surface of the concave mold and tap it with a copper rod. Don't knock it in place obliquely. The bottom of the concave mold should be chamfered. After installation, check whether the concave mold surface is flat and convex. After assembling the die and die core, make necessary inspections against the material belt, whether each part is installed incorrectly or reversely, check whether the die and die pad are reversed, whether the blanking hole is blocked, and whether the new parts need to be stolen. Whether the material that needs to be stolen is enough, and whether the mold needs to be locked is locked. Pay attention to the locking confirmation of the stripper plate screw. When locking, it should be cross-locked with a balanced force from the inside to the outside. Do not lock a certain screw first Tighten another screw to prevent the stripper plate from tilting and cause the punch to break or reduce the accuracy of the mold. (2) The maintenance of the stripper plate The removal of the stripper plate can be balanced with two screwdrivers, and then use both hands to balance it. When it is difficult to disassemble, check whether the inside of the mold is cleaned, whether the locking screws are completely disassembled, whether the mold is damaged by jamming, find out the reason and then do the corresponding treatment, and do not blindly dispose of it. Assemble the stripper board. First, clean the punch and stripper plate, add lubricating oil to the guide post and punch introduction, put it in steadily, and then press it in place with both hands, and repeat it several times. If it is too tight, find out the cause (guide Whether the guide of the column and the guide sleeve is normal, whether there are damages in various parts, whether the new punch can pass through the stripper plate is correct. Find out the reason and do the corresponding treatment. If the fixed plate has a pressure block, check the stripper back plate Is the material stealing enough? The material contact surface between the stripper plate and the concave mold produces indentation for a long time (the material gap between the stripper plate and the concave mold is generally material thickness minus 0.03-0.05mm, when the indentation is serious, It will affect the pressing accuracy of the material and cause the product size to be abnormally unstable. It is necessary to repair or re-grind the stripper insert and stripper. The contour sleeve should be checked for accuracy, and it will cause the stripper when it is not equal. Tilting, its precise guiding and smooth spring pressing function will be destroyed and must be maintained. Also want to know more, welcome to consult