6 considerations for stamping continuous die design
- Punching waste should not be ejected
When designing continuous molds, the discharge of scrap is as important as the conveying of the coil. The timely and reliable discharge of punching waste from the mold is the basis for ensuring the normal production efficiency of continuous molds. For fine blanking dies, punching waste cannot leak from the die hole, but can only be ejected from the die surface.
- The depth of the hole for the float pin of the discharge plate in the continuous die should be reasonable
When the part material is thin, the height position of the floating pin should match the depth of the breakaway hole of the stripper. If the escape hole of the stripper plate is too deep, the material will be bent upwards under the action of the compression spring force, and the material will not be able to be fed normally; if the escape plate of the stripper plate is too shallow, the material will be cut off. Therefore, the depth of the hole for the floating pin of the stripper plate in the continuous mold should be reasonable.
3. The continuous die should not have positioning devices such as stoppers and side blades
For the continuous die stamping workpiece, it is necessary to solve the problem of accurate positioning of the strip material and ensure that the step distance of the continuous die is consistent so that qualified parts can be punched out. Commonly used positioning devices include fixed baffle pins, guide plate pins, guide plates, and side blades.
Fourth, the position of the side edge in the continuous die cannot be ignored
Side edge positioning can accurately control the step distance and has high positioning accuracy, but it needs to cut one or both sides of the material, resulting in waste and waste. When using the side edge distance, the side edge position should be appropriate.
5. The shape of the side edge in the continuous die cannot be ignored
There are three side edge shapes in continuous die: rectangular flat side edge, L-shaped side edge and concave side edge. The rectangular flat side edge is easy to make, but it is easy to produce burrs. The L side edge affects the feeding, and the concave type does not affect the feeding, but it increases the manufacturing difficulty of the side edge.
Six, the continuous mode guide pin should not be too long
In order to control the feeding step, continuous molds need better positioning devices. Among them, the guide pin is a precise positioning method widely used in continuous molds. It should be noted that the length of the guide pin should not be too large, and the length of the guide hole should not be too large, otherwise it will break due to insufficient rigidity.
