1. Purpose
To ensure equipment and personal safety and produce qualified products by standardizing the installation, debugging, and removal of molds.
2. Applicability
This standard applies to the installation, debugging, and removal of molds.
3. Operation Requirements
Serial Number Operation Procedure Operation Method Precautions
1. Lower the slide to the bottom dead center
A. Switch the stroke selection switch to the "inch" position.
B. Use the "dual hand buttons" to lower the slide to the bottom dead center.
Pay attention to the angle indication of the crankshaft during operation to ensure that the slide stops at a position 1-2 degrees past the bottom dead center.
2. Check the mold height of the press
A. Check the mold closing height.
B. Adjust the mold height of the press to be 5-10mm higher than the mold closing height (including the height of any shims used).
If the mold height of the press is lower than the mold closing height or the sum of the mold height and shim thickness, it is easy to damage the mold during installation and debugging.
3. Inspection, adjustment, and cleaning of the mold installation surface
A. Thoroughly clean the bottom surface of the press slide, the worktable, and the handle holes from impurities and iron filings.
B. Level the worktable and shims with uneven surfaces.
C. Clean the mold surface.
D. Confirm the air cushion device.
A. Check if the worktable surface is uneven. If so, use an oil stone to level it.
B. Confirm if the handle fixing bolts are intact.
C. When using an air cushion, check if the air cushion push rod is deformed, if the placement position is suitable, if the length is appropriate, and if it is clamping scrap material.
4. Placing the mold on the press worktable
A. Use suitable handling tools to transport the mold.
B. Raise the slide to the top dead center and place the mold.
C. Confirm the installation direction, structure, and condition of the mold.
When transporting the mold, lower the forklift forks before moving the mold.
5. Mold installation
A. Install the mold in the center of the worktable and adjust its position and orientation.
B. Confirm the position of the shims.
C. Press the "stop" button of the motor. When the stroke speed is around 20 SPM, slowly lower the slide using the inertia of the flywheel and insert the handle into the handle hole of the slide.
A. The centerline of the feed direction of the progressive die should align with the centerline of the material. B. Confirm the position of the material drop hole in the die to prevent it from being blocked by shims. Avoid excessive distance between shims, which can cause deformation of the die. C. Pay attention to using the "inch" stroke operation!
6. Rough adjustment of the closing height
A. Completely loosen the handle bolt.
B. Lower the slide until it touches the upper die surface.
A. Push it by hand to check if the die moves.
B. This operation must be performed at the bottom dead center.
C. Stamping dies with engravings, bulletproof dies, bending dies, or deep-drawing dies must be tested with workpieces.
7. Fixing the upper die
A. First, confirm the fixing device for the die.
B. Fix the die at two diagonal or multiple locations.
C. Tighten the handle fixing bolt.
A. Pay attention to check for any damage to the die fixing bolts, nuts, or pressure plates.
B. For upper dies weighing over 100kg, four fixing points are required.
C. First, lightly tighten the handle fixing bolt, then slightly lift the upper die and tighten it again with gravity.
8. Confirming the internal condition of the die
A. Clean the inside of the die.
B. Inspect the various components of the die.
C. Lubricate the guide pillars, guide bushes, and other sliding parts.
Check for any abnormalities such as damage, wear, or incorrect installation in various parts of the die.
9. Fixing the lower die
A. Fix the lower die at the bottom dead center.
B. After fixing the lower die, raise the slide to the top dead center.
A. First, hand-tighten the upper and lower die fixing bolts and run the slide for 2-3 strokes. If there are no abnormalities such as vibration or unusual sounds, gradually tighten the fixing bolts from light to heavy.
B. The die fixing bolts should be installed as close to the die as possible.
C. The area below the die fixing position should not be suspended.
D. Pay attention to any abnormal sounds in the guiding area.
10. Fine adjustment of the press closing height (DH value)
A. Adjust the closing height according to the DH value specified in the operation standard or the condition of the workpiece.
B. Insert a piece of paper and check the degree of die closure.
A. The closing depth of the blanking die should be around 0.2-0.3.
B. When adjusting bending or deep-drawing dies, pay attention to changes in indentation, stretching marks, angles, depths, and shapes on the surface of the workpiece.
C. Pay attention to any uneven clearances or die nibbling.
11. Adjusting the limit screw of the stripper plate
Raise the slide to the top dead center and adjust the limit screw to ensure reliable contact with the stripper plate.
A. Pay attention to fixing the brake screw securely.
B. Check if the stripper plate, stripper plate holder, stripper pin, and ejector are deformed or stuck.
12. Adjusting other processing conditions
A. Confirm the stamping oil and its device.
B. Confirm if the feeding clearance, pressure, release time, feeding center, and height are appropriate.
C. Confirm if the air cushion pressure is appropriate.
D. Confirm if the stroke speed of the press is appropriate.
The die adjustment worker should inform the operator of the relevant operation guidelines and precautions.
13. Trial run of the die
A. When adjusting the die, carefully check the surrounding conditions before proceeding.
B. After adjusting the die, complete the relevant communication work. Submit the trial samples that have passed self-inspection for inspection.
A. After the adjustment, it should be confirmed by the team leader or relevant responsible person, who should provide necessary guidance.
B. The die adjustment worker should inform the operators of the relevant stamping operation precautions.
14. Preparation for mass production
A. After the trial run is completed, organize the tools and equipment.
B. Clean the trial samples.
A. During normal operation, tools should not be scattered on the press or feeder.
B. Clean the trial samples on the worktable.
15. Removing the die
A. Clean the inside of the die from waste materials and other debris.
B. Inspect the technical condition of the die.
C. Lubricate the moving parts of the die. Apply rust-proof oil to the cutting edges of the die if it will not be used for a long time.
A. Especially for large dies, clean them carefully before removal.
B. Inspect for any repair needs for the next production. Immediately report any abnormalities to the team leader.
C. Keep the final products from bending or stretching dies inside the die.
16. Lower the slide to the bottom dead center using the "dual hand buttons".
17. Loosen the die fixing bolts and the fixing bolts of the upper and lower dies and handle.
Completely loosen the fixing bolts to prevent the press slide from lifting the die, which can cause accidents.
18. Raise the slide using the "inch" operation and slowly lift it to the top dead center.
To prevent the upper die from being lifted suddenly when the handle fixing bolts are not completely loosened.
19. Cleaning and storage of the die
A. Clean the surface of the die.
B. Use appropriate handling methods and tools to place the die on the die rack according to the specified requirements.
Handle and place the die with caution during transportation and storage.
20. Storage of final products
Place the final products on the die rack together with the die. Pay attention to proper storage of the final products.
