Injection Molding Robot Selection Guide: 3 Steps to Choose Right

Why Injection Molding Robots Matter in Modern Factories?

Injection molding factories in face similar challenges:

• Rising labor costs

• Worker shortages

• Long production hours

• Safety risks from heat and repetitive work

An injection molding robot helps you:

• Run production 24/7

• Improve part consistency

• Reduce labor dependency

• Shorten cycle time

This guide helps you choose the right robot model based on your machine and product.

Step 1 – Match the Robot to Your Injection Molding Machine Tonnage

The injection molding machine is the robot’s working base.

Machine tonnage defines mold size, product weight, and required robot stroke.

1.160t – 470t Injection Molding Machines Typical products

• Phone housings

• Small appliance parts

• Daily plastic items

2.500t – 1600t Injection Molding Machines Typical products

• Automotive interior parts

• Storage boxes

• Medium-size industrial components

3.1200t – 2800t Injection Molding Machines Typical products

• Automotive bumpers

• Large trash bins

• Heavy-duty containers

Step 2 – Define Your Production Goal Clearly

Before choosing a robot, define what you want to improve.

Increase Output with Fewer Operators

• One worker manages multiple machines

• Shorter cycle time

• Stable, repeatable motion

Handle Complex Molding Processes

• Insert molding

• Runner and product taken out together

• Rotation or angled take-out

Replace Manual Take-Out Work

• Simple pick-and-place

• Stacking or conveyor placement

• Low-cost automation entry

Step 3 – Choose the Right Robot Type

Servo robots focus on speed, precision, and flexibility.

3-Axis Servo Robot Best for

Easy Part Retrieval, High-Volume Production, Cost-Effective Performance

3-Axis Dual-Arm Servo Robot

Insert molding、Product + runner removal；Two tasks in one cycle、Higher efficiency。

5-Axis Dual-Arm Servo Robot

Complex mold structures、Product rotation or angled removal；High flexibility、Suitable for advanced 。automation

H3: Transverse Mechanical Arms (Best for ≥ 500t Machines)

Transverse robots provide maximum stability for large molds.

Medium Load Models (Up to 20 kg | 500t – 1600t)

Large plastic parts

Long horizontal reach

Stable and reliable

Heavy Load Models (Up to 50 kg | 1200t – 2800t)

Extra-large products

Continuous heavy-duty operation

Strong and durable design

Quick Injection Molding Robot Selection Table

H3: How do I choose the right robot for my injection molding machine?

Start with machine tonnage, then check product weight and process complexity.

This ensures safety and stable operation.

Is a servo robot better than a mechanical arm?

Servo robots offer speed and precision for small to medium machines.

Mechanical arms provide better rigidity for large machines.

Can one robot handle inserts and product removal together?

Yes. Dual-arm servo robots can place inserts and remove finished parts in one cycle.

Are injection molding robots suitable for 24/7 production?

Yes. Robots are designed for continuous operation and consistent quality.

What industries commonly use injection molding robots?

Automotive, home appliances, packaging, logistics, and consumer goods.

Choosing the right injection molding robot:

Reduces long-term labor cost

Improves production stability

Supports factory automation upgrades

If you are unsure which model fits your mold or product, contact our technical team.

We provide practical robot selection support based on your real production needs.