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Cr12MoV Steel + Bronze Insert Angle Lifter Slide Unit
This integrated vertical wedge lifter assembly is precision CNC machined for injection mold undercut demolding, constructed with Cr12MoV heat-treated steel frame and built-in bronze self-lubricating wear insert. It features vertical linear guide rails, wedge inclined pulling head, fixed base mounting holes and rotating pin connection structure, serving as dedicated side core pulling components for complex vertical undercut plastic molds.
- Material: Cr12MoV Cold Work Steel + C932 Bronze Alloy Insert
- Hardness: HRC 58–62 (Cr12MoV after quenching); HB 110–130 (Bronze)
- Tolerance: ±0.002 mm
- Surface Finish: Precision Ground Matte Steel + Polished Bronze Wear Pad
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Vertical Wedge Core Pulling Engineering
Vertical inclined wedge transmission structure converts horizontal mold opening force into vertical upward core pulling stroke, smoothly stripping vertical internal undercuts of plastic parts without forced ejection product deformation. Built-in independent bronze friction pad isolates direct metal-to-metal contact between sliding wedge and guide base, greatly lowering reciprocating friction loss and eliminating frequent oil lubrication maintenance. Double parallel vertical guide rails restrict lateral offset during lifting movement, while solid round hinge pin ensures stable rotational linkage of the wedge head. Four-corner base mounting holes provide flat fixed installation on mold B plates, ultra-tight assembly tolerance guarantees consistent core pulling stroke after millions of mold opening cycles.
Monolithic thickened vertical frame delivers high impact resistance, resisting bending and chipping under long-term mold clamping impact loads.
Composite Wear-Resistant Material Construction
The matched combination of Cr12MoV tool steel and bronze alloy balances structural rigidity and self-lubricating wear resistance:
- Cr12MoV Cold Work Steel Frame: Full quenching heat treatment achieves ultra-high surface hardness, outstanding abrasion resistance against glass fiber plastic friction; high compressive toughness prevents wedge fracture under heavy clamping pressure
- C932 Bronze Insert: Natural self-lubricating property, low friction coefficient, effectively reduces sliding wear noise and avoids galling between steel sliding surfaces
- Interference assembly between bronze pad and steel base prevents displacement under repeated reciprocating sliding, matched thermal expansion eliminates gap deformation from mold temperature cycling Perfect for medium & high-volume injection molds with deep vertical undercuts, including automotive structural parts, electronic plastic shells and household appliance components.
Custom Mold Slide Engineering Support
- Custom wedge angle, vertical lifting stroke, overall unit height and base hole layout based on customer plastic product 3D CAD drawings
- Optional surface upgrades: Gas Nitriding, DLC Anti-Friction Coating, Precision Mirror Grinding, Anti-Rust Passivation
- DFM mold consultation: wedge force balance optimization, bronze wear pad size matching, undercut demolding stroke design
- Fast single-unit prototype sampling and mass batch mold slide delivery
Key Features & Advantages
- Vertical Wedge Lifting Mechanism: Realizes vertical undercut core pulling to solve complex plastic part internal buckle demolding difficulties.
- Built-In Bronze Self-Lubricating Insert: Separates friction contact surfaces, extends service life and reduces daily mold maintenance work.
- Dual Parallel Vertical Guide Rails: Eliminates lateral shaking during lifting movement to maintain stable core pulling precision.
- High Hardness Heat-Treated Steel Main Body: Resists abrasion from filled plastic melts for long-cycle mass production molds.
- Fully Customizable Wedge Geometry: Adjust wedge angle, lifting height and base dimension to match unique vertical undercut molding demands.
Technical Specifications
| Parameter | Specification |
|---|---|
| Main Frame Material | Cr12MoV Cold Work Steel |
| Wear Insert Material | C932 Tin Bronze Alloy |
| Alternative Materials | SKD11 Wear Steel, H59 Brass Insert |
| Hardness | HRC 58–62 (Cr12MoV quenched); HB 110–130 (Bronze) |
| Dimensional Tolerance | ±0.002mm for wedge angle, lifting stroke & base flatness |
| Parallelism of Vertical Guide Rail | ≤0.002mm per 100mm height |
| Surface Roughness | Ra ≤0.4μm ground steel surface; Ra ≤0.2μm polished bronze pad |
| Manufacturing Processes | 5-Axis CNC Milling, Precision Surface Grinding, Heat Treatment, Bronze Insert Press-Fitting, Assembly Fitting |
| Surface Treatments | Gas Nitriding, DLC Low-Friction Coating, Anti-Rust Passivation |
| Customization | 100% Fully Customized via CAD Drawings & Plastic Product Samples |
Applications
Automotive Structural Plastic Molds
Cr12MoV bronze composite lifter units for automotive interior plastic brackets, door handle vertical undercut molds. High wear resistance adapts to glass-filled plastic injection, stable wedge structure avoids core pulling fracture in high-volume vehicle production.
Consumer Electronic Shell Injection Molds
Vertical angle lifters for wireless earphone, charger housing internal buckle molds. Self-lubricating bronze pad reduces sliding scratch marks on high-gloss electronic plastic surfaces.
Household Appliance Plastic Component Molds
Dedicated vertical core pulling slides for washing machine, air conditioner plastic button and inner frame molds, nitrided steel surface resists corrosion from mold cooling water.
Cosmetic Packaging Molding Tools
Small-size custom wedge lifter assemblies for cosmetic cap, lipstick tube vertical undercut molds, smooth sliding movement protects glossy cosmetic packaging appearance.
Medical Disposable Plastic Molds
S136 stainless steel frame alternative version meets medical hygiene standards, paired with bronze inserts for medical tube plastic shell molds, resisting erosion from medical plastic additives and mold cleaning agents.
