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The primary mold repair methods include: welding, wire-cut insert replacement, localized EDM (electrical discharge machining) material removal, surface lowering, and part replacement.Welding Repair...

In injection molding, the hardness of core (rear) and cavity (front) inserts does not necessarily need to be identical. Material selection should be determined holistically based on the type of pla...

In mold design, detecting undercuts early—and verifying again after completion—is critical. Undercuts can cause ejection issues, increase complexity, or even make molding impossible without special...

Mold precision is ultimately reflected in the dimensional accuracy of the final plastic part. Achieving high precision requires attention to mold design, mold manufacturing, and awareness that part...

In-Mold Cutting System Design: A Classic UG Mold Engineering Case StudyIn-mold cutting (also known as in-mold gate severing) is a sophisticated yet highly effective solution for achieving clean, au...

Don’t always blame the mold—many cosmetic defects in plastic parts are actually predetermined during the structural design phase! After years of product development, nearly every engineer develops ...

Slider Design – Slider Positioning1. Positioning between the Slider and the Cavity/Core Insertsa. Option A:The cavity insert lacks a defined datum for positioning. Without a reference surface durin...

When reviewing our finalized drawings, we sometimes skip the full design checklist due to time constraints. However, for critical areas, we must always keep key details in mind. The following 10 po...

The quality of a mold’s cooling system design directly impacts part quality. Uneven cooling can cause warpage, distortion, internal stress, and cracking, and it also affects the molding cycle time....

There are many common methods to release undercuts in injection molds, such as side actions (sliders), angled lifters (cams), spring-loaded slides, etc. Some designs even feature sophisticated comb...

Mold Polishing GradesPolishing standards for injection molds typically follow the SPI (Society of the Plastics Industry) guidelines. These standards classify surface finishes—from high-gloss mirror...

Key Principles of Injection Mold DesignTo ensure high-quality, cost-effective, and durable plastic parts, follow these core design guidelines: 1. Parting Line & Ejection DirectionDefine the ejectio...

Key Points for Lifter Stroke Design in Mold EngineeringWhen a standard lifter cannot fully clear a product’s undercut due to remaining interference between the lifter and the product’s rib area dur...

Common Plastic Shrinkage & Injection Molding Defects: Causes & SolutionsUnderstanding plastic behavior is key to high-quality injection molding. Here’s a clear guide to common defects — especially ...

Design Considerations for Lifters1. Determine the lifter angle based on the actual stroke (H). The typical angle ranges from 3° to 12°, and the angle should be as small as possible. A standard angl...

Introduction to Standard Components in Injection MouldsStandard components for injection moulds refer to mould parts that have been standardized, serialized, and commercialized. These components ar...

Basic Structure of Injection MoldsAn injection mold is a complex system composed of several functional components. Based on their roles, these components can be categorized into the following key s...

The Three Key Principles of Mold Material Selection – From Critical to CrucialSelecting the right material for mold manufacturing is essential to ensure performance, longevity, and cost-efficiency....

Embrace Feedback, Drive Continuous Improvement (Design for Communication)The Core Principle: The best design doesn't exist solely in your CAD software; it lives in the hands-on experience of the sk...

Mold Gate Type and Dimension DesignThe gate, also known as the feed inlet, is a short, narrow channel connecting the runner to the mold cavity (except for direct gates) and is a critical part of th...

Angle Lifter Design (Angle Lifter) An angle lifter is a mechanism used to handle internal undercuts in molded parts. Types of angle lifters include:1. Integral type2. Two-piece type3. Cavity-side a...

To ensure high-quality, cost-effective, and manufacturable plastic parts, the following design principles should be considered during the early stages of product development. Proper design can sign...

Complex Bent Pipe Mold: Challenging to Design, Even Harder to DemoldMolds for bent pipe parts are generally complex, with the main difficulty lying in the demolding mechanism. This article uses 3D ...

When is a Hot Runner System Required in Plastic Mold Design?A hot runner system is typically designed into a mold under the following circumstances:1. When the customer specifically requests a hot ...

Mold Structure: Rotating Core Pull and Dual Slide Core Pull – How to Solve It?Today, let’s take a look at a three-way pipe fitting product. Due to its relatively complex structure, the mold design ...

Why Are Injection Molds for Medical Products More Expensive?Injection molds are widely used in the production of both daily necessities and medical products. However, compared to general household ...

What You Need to Know When Making an Injection Mold？When it comes to making an injection mold, there are two key factors that significantly impact both the cost and performance of the mold: mold ma...

The Five Key Characteristics of Injection Molds – Do You Know Them? 1. Cavity and Core with Complex 3D SurfacesThe external and internal shapes of plastic parts are directly formed by the cavity an...

Root Cause Analysis of Mold CrackingMold cracking is a severe form of mold failure, directly affecting production safety and cost. The following is a systematic analysis and corresponding solutions...

Challenges in Mold Structure and Corresponding Structural AnalysisMold design is a complex systems engineering task, requiring the integration of multiple functions such as forming, demolding, and ...

How to Design a Mold Venting System to Improve the Surface Quality of Injection-Molded Parts?Why is venting necessary? During the plastic filling process, the original air in the mold cavity, along...

In injection mold terminology, what does "angled lifter cutting into plastic" mean?"Angled lifter cutting into plastic" refers to a situation where the angled ejector (or lifter) comes into contact...

Efficient CNC design is the key to balancing functionality, cost, and production efficiency. By following these guidelines, you can avoid common design challenges, improve manufacturability, and st...

Factors Affecting CNC Machining CostsIn CNC machining, the costs of different machining projects vary. The cost of a CNC machining project is determined by many factors collectively. In most projec...

In automotive injection mold design, to enhance the positioning accuracy during mold closing and reduce misalignment between the fixed and moving halves during the injection process, molds require ...

Comprehensive Mold Acceptance CriteriaII. Mold Appearance1. Nameplate Content: The mold number, weight (in KG), and external dimensions (in mm) should be clearly marked on the nameplate using 1/8-i...

In the field of precision part machining, CNC machining is a method that controls machine tool movements and processes through computer digitization and information digitization. CNC part machining...

1. Sprue Bushing -Directly contacts the injection nozzle of the molding machine; molten plastic must pass through the sprue bushing before entering the mold core.2. Locating Ring - Used on the mold...

CNC machining is a manufacturing process that uses computer-controlled machine tools to perform machining operations. CNC machines can precisely carry out cutting, drilling, milling, turning, and o...

Types of Collapsible Cores and Their Working PrincipleIn this section, we introduce several types of collapsible cores, including 6-blade, 8-blade, 10-blade, 12-blade, and folding-type collapsible ...

This guide addresses common issues encountered during CNC machining processes, along with improvement methods. It also covers how to select speed, feed rate, and cutting depth for different applica...

Master Wire EDM in Four Simple Steps!1. Not Everything Can Be Processed by Wire EDMBefore proceeding with wire electrical discharge machining (Wire EDM), it's crucial to analyze and review the desi...

The principles of CNC machining technology emphasize the overall process rather than the nature of a single operation or the processing of a particular surface. For example, some positioning datum ...

Traverse machining is one of the most critical functions in CNC Electrical Discharge Machining (EDM), directly impacting processing efficiency and surface quality. However, not every shop can fully...

Advantages and Disadvantages of Full-Cutting on CNC Machines, and Their Machine RequirementsAdvantages:1. High Processing Efficiency:Full-cutting allows the removal of large amounts of material in ...

1. Annealing Process:Heat the steel to a temperature of Ac3 + 30–50°C, Ac1 + 30-50°C, or below Ac1 (refer to relevant reference materials for specific temperatures).Typically, allow the steel to co...

In recent years, machining technology has advanced significantly, bringing the industry into a new phase of higher precision and faster efficiency. Today, we’re excited to share the latest machinin...

In the early stages of mold design, many people are uncertain about how to select the most suitable mold steel, except when a specific material is designated by the client. They often lack clarity ...