Paper shredding blade punching forming machining method

Abstract

The invention discloses a paper shredding blade punching forming machining method. A paper shredding blade comprises a blade body, a mounting hole positioned at the center of the blade body, and a point positioned on the periphery of the blade body. The method comprises the following steps: providing a metal material strap, pressing pre-pressing lines on the metal material strap at an interval of the diameter of the paper shredding blade, so as to ensure that a paper shredding blade forming zone is formed between each two adjacent pre-pressing lines on the metal material strap, punching the paper shredding blades on the paper shredding blade forming zones, ensuring that the paper shredding blades are connected with the metal material strap in positions of the pre-pressing lines, and disconnecting in the positions of the pre-pressing lines, so as to obtain independent paper shredding blades. The method has the advantages of high material utilization and cost saving.

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] Today's shredding blades have a variety of processing methods, such as figure 1 As shown, it is an existing shredding blade processing technology, which includes the following steps: (...

AI Technical Summary

Problems solved by technology

Although the above-mentioned shredding blade 400 processing method is simple, it only needs to use a stamping die to directly cut off the waste material 301 on the material belt to obtain the required shape and structure of the shredding blade 400; however, this processing method has great limitations. The disadvantage is that 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 shredder blades 400. Two shredding blades 400 can be separated from each other

If the arrangement between the two shredder blades 400 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 tangent point area cannot be effectively removed, therefore, the shredder blades 400 that are punched out are connected to each other, and it is difficult to break and separate them.

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