Method for machining paper shredding blades in punching forming mode

Abstract

The invention discloses a method for machining paper shredding blades in a punching forming mode. Each paper shredding blade comprises a blade body, a mounting hole in the center of the blade body and blade points located on the periphery of the blade body. The method for machining the paper shredding blades in the punching forming mode comprises the following steps that a metal material band is provided, a plurality of paper shredding blades are formed on the metal material band through punching, and adjacent paper shredding blades are in a tangent state and are connected at the tangential position; blade cutting grooves are formed in the tangential positions of the paper shredding blade in a press mode, and thus blade cutting positions are formed in the blade cutting grooves; single bodies of the paper shredding blades are obtained by breaking at the blade cutting positions. The method for machining the paper shredding blades in the punching forming mode has the advantages of being high in material utilization rate and saving cost.

Description

technical field [0001] The invention relates to a shredding blade processing technology, in particular to a stamping and forming processing method of a shredding blade with high material utilization rate and cost saving. Background technique [0002] The shredding principle of the paper shredder is to fix several pairs of shredding blades on the two cutter shafts, and drive a series of speed change mechanisms through the motor to transmit a lower speed and a larger torque to make the two cutter shafts rotate. When the paper rotates from the two When passing between the cutter shafts, the two shredding blades cut the paper, thus cutting the waste paper into thin paper strips or shreds. Therefore, the shredding blade plays a very important role in the shredding effect of the shredder. [0003] Now there is a shredding blade processing technology, which includes the following steps: 1. Provide a metal strip with an appropriate width; 2. Punch out the mounting holes for the shr...

AI Technical Summary

Problems solved by technology

Although the above-mentioned shredding blade processing method is simple, it only needs to use the stamping die to directly cut off the waste on the material belt to obtain the required shape and structure of the shredding blade; however, this processing method has great disadvantages. That is, the material utilization rate is low, and the production cost cannot be effectively reduced; the reason is that a certain distance needs to be reserved between the two shredding blades. Can be separated from each other

If the arrangement between the two shredder blades is in a tangential state, in theory, it is only necessary to cut off the waste on both sides of the tangent point, but because the existing punch has a certain thickness, this makes it difficult to The intermediate waste in the spot area cannot be effectively removed, so the shredder blades that are punched out are connected to each other and are difficult to break to separate

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