In the stamping process of metal spring piece, because the high-speed punch is used, the risk coefficient is relatively high. If the operation is improper, the mold will be seriously damaged, and the safety of the operator will also be hurt. Therefore, when the mold needs to be off the machine, remember to implement the following operation to ensure the safety of the mold and operators
There are two kinds of status of hardware spring die, normal and abnormal
1、 Hardware shrapnel is normally off the machine:
1. Turn the punch to “inching” and turn off the counter;
2. Use the inching switch to set the punch to the bottom dead point (180 °) and cut off the material belt; prevent the belt from cutting when the die is dead, which may cause deformation of the belt and damage of the die parts
3. Loosen the upper and lower die screws
4. Hit the punch to the top dead center and pull the die to the base of the die car together. Two people are required to finish the die drawing. One person is not allowed to pull the die to ensure safety
5. It is necessary to pull the die car away from the punch for a certain distance before lowering the height of the die car, so as to prevent the die car from getting stuck in the way of the punch and forming the sliding of the die
6. The locking screw, scissors, material hook, flashlight, etc. should not be placed on the operation surface of the punch when the mold is lowered
2、 Hardware shrapnel is out of order:
1. Turn off the power supply and counter of the host computer;
2. After the flywheel is completely broken off, place plastic or paper core on the front and rear diagonal stop column of the mold. Do not place it between the stripper plate and the mold core fixing plate, or place iron block in the mold instead of plastic
3. Swing the flywheel with safety rod (do not pull the flywheel by hand or use safety rod to stop flywheel operation before the flywheel is interrupted) and stick the upper and lower stop posts
4. Loosen the upper and lower die screws, pull the flywheel to 0 ° to 70 ° with safety rod, and then pull the die down
3、 Precautions for dismounting hardware shrapnel:
1. Before pulling the mold, it is required to acknowledge that the support plate of the feeding port of the mold has been loosened and removed
2. When the mold can not be pulled, one person can pull out and one person can push backward. (avoid pushing backward together to push the mold out of the punch). It can also be used to screw the screw hole of the lower die base and lift both hands up a little and then pull it out
3. When the die is pulled away from the punch, the die car shall not turn too fast to prevent the guide plate or the data support plate from hanging on the punch or the sound insulation cover of the punch, which may cause damage to the die parts or slide of the die
4. It is not allowed to move the mold when it is abnormal, especially after the mold height stop column is padded with plastic
5. Turn off the main machine and other power supply after the die is lowered to prevent capital waste
6. When the mold is shut down normally, it is necessary to move the mold inching until the guide needle enters the round hole of the tape. (to prevent the data formed by the feeder not holding the data when there is no air pressure, which causes the wrapping tape.) stop the mold from stopping at the bottom dead point. (it is easy to reduce the service life of the tension spring in the mold.)
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