steadiness of mold during opening and clamping and avoids the impact and collision of molds when contacting each other The toggle link unit is easily worn and requires high rigidity and abrasion resistance When the thickness of molds varies, the space between moving plate and fixed should be a The clamping force must be measured by special instrument and is hard to be adjusted ④3 1. tie-bar lock unit: 2. fixed plate: 3. mechanical safety bar stopper 4. mechanical Safety Stop Bar: 5. movable Plate: 6. movable plate link 7.cross head link; 8. long link: 9. main link: 10.end plate link: 11. end plate: 12 clamping cylinder 13. clamping cylinder rod: 14.cross head: 15.ejector cylinder: 16 ejector pin: 17. movable plate slider: 18tie-bar Fig 6-7: hydraulic-mechanical clamping unit structure 2)Mold Adjusting Unit The mold adjusting unit is set for the variation of mold thickness, especially for draulic-mechanical mold clamping device. Since the stroke of moving plate cannot be adjusted,a mold adjusting unit must be set to meet the requirements of molds with different thicknesses Space adjustment for thread toggle link. Space adjustment for movable mold clamping oil tank Space adjustment for rod nut Space adjustment for the connecting nut between movable mold plates 3) Ejector Unit The ejector unit is set for ejecting the plastic parts in the mold cavity and therefore should be provided with sufficient ejection force and stroke. The unit usually falls into three forms: mechanical ejection, hydraulic ejection and pneumatic ejection ■ Mechanical Ejection The ejector pin, which is unmovable in itself, is fixed on the frame of the machine During mold opening, the moving plate moves backward and the pin spreads through the center port in the plate, acts on the ejector plate of the mold and pushes the ejector plate to eject the plastic parts from the moldsteadiness of mold during opening and clamping and avoids the impact and collision of molds when contacting each other. „ The toggle link unit is easily worn and requires high rigidity and abrasion resistance. „ When the thickness of molds varies, the space between moving plate and fixed should be adjusted, which tends to be troublesome.。 „ The clamping force must be measured by special instrument and is hard to be adjusted. 1.tie-bar lock unit；2.fixed plate；3.mechanical safety bar stopper； 4.mechanical Safety Stop Bar；5.movable Plate；6. movable plate link； 7.cross head link；8.long link；9.main link；10.end plate link；11.end plate；12.clamping cylinder； 13. clamping cylinder rod；14.cross head；15.ejector cylinder；16.ejector pin；17.movable plate slider；18.tie-bar Fig.6-7: hydraulic-mechanical clamping unit structure 2) Mold Adjusting Unit The mold adjusting unit is set for the variation of mold thickness, especially for hydraulic-mechanical mold clamping device. Since the stroke of moving plate cannot be adjusted, a mold adjusting unit must be set to meet the requirements of molds with different thicknesses. „ Space adjustment for thread toggle link.。 „ Space adjustment for movable mold clamping oil tank.。 „ Space adjustment for rod nut.。 „ Space adjustment for the connecting nut between movable mold plates.。 3) Ejector Unit The ejector unit is set for ejecting the plastic parts in the mold cavity and therefore should be provided with sufficient ejection force and stroke. The unit usually falls into three forms: mechanical ejection, hydraulic ejection and pneumatic ejection. „ Mechanical Ejection The ejector pin, which is unmovable in itself, is fixed on the frame of the machine. During mold opening, the moving plate moves backward and the pin spreads through the center port in the plate, acts on the ejector plate of the mold and pushes the ejector plate to eject the plastic parts from the mold