Production capability and quality support for custom molding projects

DongXin supports customers with mold manufacturing, injection molding, silicone molding, project delivery management and quality inspection workflows.

Capability Overview

Support from tooling preparation to production delivery

CNC machining for precision injection mold manufacturing

Pre-Product Development Support

1-1 DFM (Design for Manufacturing) Analysis .Draft angle, wall thickness & fillet optimization suggestions .Feasibility evaluation & simplification for undercut / side core structures .Pre-judgment of assembly interference, sink marks & warpage risks .Formal DFM report with before & after comparison drawings 1-2 Material Selection & Material Property Consultation .Plastic & LSR material recommendation (ABS, PC, PP, PA66, medical grade, food grade etc.) based on product application .Shrinkage rate, temperature resistance, flame retardant grade & certification introduction .Cost comparison of alternative materials 1-3 Mold Flow Analysis .Simulation of filling, packing, cooling & warpage .Gate location optimization & weld line prediction .Location identification of air traps & sink marks with corresponding solutions

Plastic injection molding production line

Mold Design Support

2-1 Mold Structural Scheme Design .Cavity layout comparison (single cavity / multi-cavity) .Parting line (PL line) confirmation plan .Ejection system design (ejector pin, angle lifter, slide, stripper plate) .Optimized layout of cooling channels 2-2 Standard Parts & Mold Lifespan Planning .Mold base selection (LKM & other standard mold bases) .Mold steel grade recommendation (S136, NAK80, P20, 718H etc.) .Mold life grade matching based on estimated shot quantity (100k / 500k / over 1 million shots) 2-3 3D Modeling & 2D Engineering Drawing Delivery .Complete 3D mold assembly drawing for customer review .Machining drawings & BOM list of spare parts .Support customer's assembly interference inspection

Liquid silicone rubber injection molding support

Machining & Mold Trial Support

3-1 Visual Progress Report of Machining .Photos & videos of key production nodes: cutting -> CNC rough machining -> EDM -> polishing -> mold assembly .Weekly production progress report 3-2 Mold Trial & Sample Validation Support .T0/T1/T2 mold trial report (dimensional inspection & appearance defect records) .Full dimensional inspection report with CMM data .Modification plan explanation & schedule follow-up .Injection molding parameter record sheet (temperature, pressure, packing, cycle time)

Manufacturing project delivery planning and coordination

Mass Production & Process Support

4-1 Injection Molding Process Tuning Guidance .Remote on-site guidance for initial mass production at client's factory .Parameter optimization to shorten cycle time & eliminate defects .Troubleshooting guide for common defects: flash, sink marks, short shot, silver streaks 4-2 Quality Control System Support .Custom mold QC checklist .Control plan for critical dimensions (CPK capability analysis) .AQL sampling standard for outgoing inspection

Injection molding production and long-term technical support

After-Sales & Long-Term Technical Support

5-1 Mold Maintenance & Preservation Guidance .Daily operation manual: cleaning, anti-rust treatment & lubrication .List of wearing spare parts & stocking suggestions .Technical solutions for mold overhaul & refurbishment .Remote fault diagnosis: excessive flash, broken ejector pins, plastic sticking to mold etc. 5-2 Product Iteration & Mold Modification Support .Feasibility evaluation for design changes .Quotation & lead time for mold modification .Compatibility assessment between old & new mold versions

Value-Added Technical Support

Full English technical documents: DFM report, mold flow report, mold trial report Time-difference responsive service: technical inquiry reply within 24 hours via email Online technical review via Zoom / Microsoft Teams with video conference Guidance on export packaging & transportation: anti-rust packaging, fumigated wooden cases, sea freight reinforcement Custom acceptance checklist complying with European & American inspection standards

Production & Delivery

A clear delivery chain from samples to batch production

DongXin coordinates engineering review, tooling preparation, sampling, production control, inspection and shipment so custom molded projects move forward with clear checkpoints.

Production delivery workflow from sampling to shipment

Delivery checkpoints

Controlled from review to after-sales

7-step production workflow

Requirement review

Engineering and DFM check

Mold design and manufacturing

Trial molding and sample approval

Mass production control

Final inspection and packaging

Delivery and after-sales support

Equipment Areas

Manufacturing areas that support custom molded parts

From mold machining to inspection and packaging, each area supports a controlled workflow for custom plastic and silicone product programs.

Machining

Inspection

Packaging

CNC Machining

Precision processing for mold cores, cavities, inserts and custom tooling components.

EDM wire cutting for precision mold features

EDM Processing

Fine-feature machining for complex details, sharp corners and high-precision mold areas.

Mold Workshop

Mold assembly, fitting, polishing and preparation before trial molding.

Inspection Equipment

Dimensional checking, first article validation and production quality review.

Production Area

Injection molding and silicone molding support from sampling to batch production.

Packaging Area

Final checking, protective packaging and shipment preparation for finished parts.

Supported Project Types

Flexible support for different production stages

Discuss a Project

New product development

Mold transfer or mold improvement

Small batch trial production

Mass production

Plastic and silicone component programs

Quality Control

Inspection workflow for reliable custom molded parts

Quality control is prepared around material checking, first article validation, in-process review, final inspection and documentation before delivery.

Quality inspection workflow for molded plastic parts

QC 01

Incoming Material Inspection

QC 02

Mold Inspection

QC 03

First Article Inspection

QC 04

In-process Quality Control

QC 05

Final Inspection

QC 06

Packaging Inspection

QC 07

Quality Documentation / Reports

Need Production Support?

Share your project requirements for capability review

DongXin can review tooling feasibility, production process, inspection requirements and delivery planning before your project starts.