Ejecting, resetting, extracting cores and taking parts

Ejecting, resetting, extracting cores and taking parts

1. ejecting should be smooth, no stalling, no abnormal sound.

2. The surface of the slanting top should be polished and the slanting top surface should be lower than the core surface.

3. sliding parts should be opened oil groove, the surface should be nitride treatment, the surface hardness after treatment is HV700 or more.

4. All the ejector bars should have stop-rotation positioning, each ejector bar should be numbered.

5. The ejecting distance should be limited by limit block

6. the reset spring should be selected from standard parts, the ends of the spring should not be polished and cut off.

7. slider, core should have a travel limit, small slider with spring limit, spring inconvenience installation can be used when the boson screw; cylinder core must have a travel switch.

8. slider core generally use oblique guide column, oblique guide column angle should be smaller than the slider locking surface angle 2 ° ~ 3 °. The slider stroke is too long should be used for cylinder extraction.

9. cylinder extraction core forming part of the end face is wrapped, the cylinder should add self-locking mechanism.

10. Slider width of more than 150 mm below the large slider should be wear-resistant plate, wear-resistant plate material should be selected T8A, after heat treatment hardness of HRC50 ~ 55, wear-resistant plate than the large surface higher than 0.05 ~ 0.1 mm, and open the oil groove.

11. the top bar should not be strung up and down.

12. The barb should be added on the top bar, the direction of the barb should be consistent, and the barb is easy to remove from the product.

13. The clearance between the top bar hole and the top bar, the length of the sealing section and the surface roughness of the top bar hole should be in accordance with the relevant enterprise standards.

14. the product should be convenient for the operator to take off.

15. the product is easy to follow the slanting top when ejected, the top bar should be added groove or etching.

16. The top block fixed on the top bar should be firm and reliable, and the non-forming part around should be processed with a slope of 3°~5°, and the lower periphery should be chamfered.

17. the oil hole on the mold frame should be free of iron filings and debris.

18. The end face of the return rod is flat and free from spot welding. The bottom of the embryo head should be free of shims and spot welds.

19. The three-plate mold gate plate guide slides smoothly and the gate plate is easy to be pulled apart.

20. The three-plate mold limit tie bar should be arranged on both sides of the mold installation direction, or add a tie plate to the mold frame to prevent the limit tie bar from interfering with the operator.

21. the oil and gas channel should be smooth, hydraulic ejector reset should be in place.

22. the bottom of the guide sleeve should be opened to make the exhaust port. 23.

23. There should be no gap in the installation of positioning pins.