Explore the Features and Benefits of the Toyo Plastic Si-400-6S Injection Molding Machines
- Heat Tech
- Jan 20
- 3 min read
Call us today: 770-974-1263 or email sales@completeplastics.com. www.completeplastics.com for more information. Injection molding machines play a crucial role in manufacturing plastic products efficiently and with precision. Among the many options available, the Toyo Si-400-6S stands out for its powerful performance and user-friendly features. This machine offers a combination of strength, versatility, and automation that can meet the demands of various production environments. Let’s explore what makes the Toyo Si-400-6S a valuable asset for plastic molding operations.

Powerful Clamping System for Reliable Production - Toyo Plastic Injection Molding Machines
The Toyo Plastic Injection Molding Machines Si-400-6S features a double toggle clamping system that delivers a clamping force of 400 tons. This strong clamping force ensures that molds stay tightly closed during injection, preventing defects like flash or incomplete filling. The double toggle design also provides smooth and consistent clamping action, which reduces wear and tear on the machine and molds.
This clamping strength makes the Si-400-6S suitable for producing medium to large plastic parts, including automotive components, household items, and industrial parts. The machine’s ability to maintain steady pressure helps manufacturers achieve high-quality results with minimal downtime.
Flexible Feed Screw Diameter Options
The machine offers three feed screw diameter sizes: 55mm, 60mm, and 68mm. This range allows users to select the screw size that best fits their production needs. A larger screw diameter can handle higher shot volumes and faster cycle times, while smaller diameters are ideal for precision molding of smaller parts.
This flexibility supports a variety of applications, from small intricate components to larger molded parts. It also allows manufacturers to optimize material usage and cycle efficiency based on the specific product requirements.
Multiple Shot Size Capacities
The Toyo Si-400-6S provides three shot size options: 17.49 ounces, 25.56 ounces, and 32.83 ounces. These shot sizes correspond to the volume of molten plastic injected into the mold during each cycle. Having multiple shot size options means the machine can accommodate different mold sizes and part volumes without sacrificing performance.
For example, a manufacturer producing small consumer goods might use the 17.49-ounce shot size for precise control, while a company making larger industrial parts could benefit from the 32.83-ounce capacity to speed up production.
Heat Insulating Heat Barrel Cover
Maintaining consistent melt temperature is critical for producing quality molded parts. The Si-400-6S includes a heat insulating heat barrel cover that helps retain heat around the barrel. This feature reduces heat loss during operation, leading to more stable melt temperatures and improved energy efficiency.
By minimizing temperature fluctuations, the machine helps prevent defects such as warping or incomplete filling. It also reduces energy consumption, which can lower operating costs over time.
Automatic Grease Lubrication System
The Toyo Si-400-6S comes standard with a totally automatic grease lubrication system. This system continuously lubricates key moving parts, reducing friction and wear. Automatic lubrication helps extend the machine’s lifespan and lowers maintenance requirements.
Operators benefit from less downtime and fewer manual lubrication tasks, allowing them to focus on production. The system also contributes to consistent machine performance by ensuring all components receive proper lubrication at the right intervals.
Large Safety Door Opening for Easy Access
Safety and accessibility are important in any manufacturing environment. The Si-400-6S features a large safety door opening that provides easy access to the mold area. This design simplifies mold installation, inspection, and maintenance tasks.
A spacious door opening reduces the risk of injury by allowing operators to work comfortably and safely around the machine. It also speeds up mold changeovers, which can improve overall production efficiency.
Practical Applications and Benefits
The combination of these features makes the Toyo Si-400-6S a versatile and reliable machine for many industries. Here are some practical examples of how it benefits manufacturers:
Automotive parts production: The 400-ton clamping force and large shot sizes allow for molding durable components like dashboards, bumpers, and housings.
Consumer goods manufacturing: Precise screw diameter options and shot sizes support the production of small, detailed items such as containers, toys, and household appliances.
Industrial components: The heat insulating barrel cover and automatic lubrication system help maintain consistent quality and reduce maintenance for high-volume runs of technical parts.
Manufacturers who invest in the Si-400-6S can expect improved product quality, reduced downtime, and lower operating costs. The machine’s robust design and automation features support long-term productivity and ease of use.
Where to Find the Toyo Si-400-6S
The Toyo Si-400-6S injection molding machine is available now at Complete Plastics. For inquiries or to request a quote, you can visit their website at www.completeplastics.com, email sales@completeplastics.com, or call 770-974-1263. Their team can provide detailed information and help you select the right configuration for your needs.




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