When the slider on the press is at the top dead center, the upper ram is in the lowest position due to the action of the upper air cushion, and the horizontal plug is in the working state. When the mold is closed, the discharge plate is subjected to the action of the lower mold, and the position is moved up, but does not affect the closing of the mold. Because the part of the projectile is wrapped on the profile of the lower die after forming, it must be separated from the profile by external force. Therefore, the top of the die is used in the die. Since the front fender is an outer cover, the top lift must ensure no damage. Surface quality, in the first few processes can be in the waste area or non-Au-dit area, but in areas that may affect the outer cover, such as step 3 of the process 3, rubber or plastic is used to lift the material, and the wedge mechanism is designed.
Because the automatic production line has a limit on the relative rotation angle of each process, and the parts have flanged requirements, the filling wedge mechanism is adopted in the front fender mold design. 1. Upper die 2. Drive wedge 3. Working wedge 4. Fill wedge 5. Flange die 6. The working process of the flange punch filling the wedge is: the upper die moves down, driving the drive wedge 2 down, At this time, the working wedge 3 is moved to the right by the action of the driving wedge 2, and the flanged punch enters the flanged die to complete the flange working. As the outer cover, the front fender has its speciality and complexity in the process and mold design. Whether the structural design is reasonable or not is very important for the realization of the drawing requirements. Now the mold has been put into use and the effect is very good.
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