The main mold parts and safety requirements
Mold , widely used, many industries are indispensable. But when there are a lot of molds are small and you do not know the secret Oh !
1 . Working parts
The blank punch and die is directly molded parts work , therefore, it is a key part of the mold . Not only precision punch and complex , it should meet the following requirements:
( 1 ) should have sufficient strength , can not be broken or destroyed during the stamping process ;
( 2 ) its material and heat treatment requirements should be appropriate to prevent high hardness and brittle .
2 . Oriented parts
Guide posts and bushings are the most widely used application -oriented parts. Its role is to ensure that when there is a precise fit clearance punch the punching . Thus , guide posts, guide sleeve gap should be less than blanking clearance . When setting the lower die holder guide post , to ensure that in dead stroke , the upper end of the guide post on the template over the top surface of at least 5-10 mm . Guide posts should be arranged away from the module and the pressure plate of the site, so that the operator 's arm is not sent across the guide posts reclaimer .
3 binder , unloading and discharging parts
Binder has a blank holder parts , pressure plate and so on. Blank holder pressure can draw blank holder force, thereby preventing the formation of wrinkles in the blank under the action of tangential pressure arch . Role is to prevent pressure plate billet move and bounce . Ejector , the role of the stripper plate is easy to clean out the parts and scrap . Putting them from the air springs , rubber and device support , can move up and down the top of the piece should be designed with sufficient ejector force , motion to the limited spaces . Stripper plate area should be minimized or closed in the operating position of the empty slot milling . Around the exposed stripper plate should have a shield to prevent fingers or foreign objects into the stretch , the exposed surface should pour blunt edges .
4 . Positioning parts
Positioning part is to determine the blank parts of the installation location , positioning pins ( plate ) , gauge pin ( board ) , the guide being eliminated , guide plate , knife set from the side , lateral pressure and so on. Design should consider locating parts easy operation and should not have had to locate the position to facilitate the observation , the best forward position , outline the positive positioning and guide pin positioning.
5. Supporting and clamping parts
It includes upper and lower templates , die handle, fixed plate punch , plate , spacing , etc. ; die down template is the basis of parts ; various other parts are fixed in the above respectively . The plane size of the template , in particular the longitudinal direction to be adapted to the workpiece , is too large or too small are not conducive to operation.
Some molds ( blanking, punching Mold ) to facilitate the pieces required under the plate in the mold . At this point the best connection between the template and the plate with screws together, the two plate thickness shall be absolutely equal. Spacing pad out the pieces to be able to prevail , not too much , lest template break.
Comprising screws, nuts, springs , pins , washers and the like. Generally use standard parts. The amount of standard parts stamping die more, should be designed to ensure a secure and elastic top choice out of the need to avoid fasteners exposed on the surface operating position , preventing bumps manpower and hinder operations.