China injection molding machine: Complete Buying Guide
China Injection Molding Machine: Complete Buying Guide
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In recent years, along with the implementation of the "Made in China" national plan, China's manufacturing industry has prospered. Various small and medium-sized enterprises are rapidly emerging, contributing to this growth. The injection molding industry is not far behind, and due to China's domestic policies and the impact of the epidemic, the demand for injection molding machines is expanding and moving forward in the development stage.
What are the best Chinese injection molding machine manufacturers? How should we choose them?
Top 10 Chinese Injection Molding Machine Manufacturers
1. Haitian
Ningbo Haitian Plastic Machinery Group Co., Ltd., established in 1966, focuses on standard applications in the mid to high-end markets of the plastic processing industry. Haitian's application-oriented R&D and sustainable solutions at reasonable market prices create a significant competitive advantage. It is known for high stability, though the sheet metal can be heavy and the price expensive compared to peers, affecting its cost-performance ratio.
2. Bole
Bole Plastic Machinery focuses on technological innovation in injection molding, using the model "German industry technology + Made in China" to provide cost-effective solutions. The EK series injection molding machine, developed with European technology, has been successful since its market launch in 2008. Bole’s CIML series for carbon fiber products is widely used, especially in the automotive industry.
3. Chen Hsong
Chen Hsong Injection Molding Machine Co., Ltd. integrates production and sales, offering a range of complex molds for various industries. Despite rapid industry growth, the company faces challenges such as heavy localization of machine parts and limited innovation.
4. Yizumi
Founded in 2002, Guangdong Yizumi Precision Machinery Co., Ltd. specializes in molding equipment manufacturing. It integrates design, R&D, production, sales, and service. While the marketing strategy is commendable, the machines sometimes lack cost-effectiveness.
5. Borche
Established in early 2003, Borche Intelligent Equipment Co., Ltd. specializes in high-precision, energy-saving, and environmentally friendly injection molding machines. While noted for a successful marketing strategy, some claims may be exaggerated.
6. Ningbo Chuangji Machinery Co.
Ningbo Chuangji Machinery Co., Ltd. specializes in plastic injection molding machinery. Since the launch of its LOG Lange series in 2007, the company has established a global sales network. It prioritizes R&D and quality, ensuring products are energy-saving and precise.
7. Ningbo Kebida (Hystan) Plastic Machinery Manufacturing Co.
Ltd. is conveniently located near the East China Sea and specializes in plastic injection molding machine manufacturing. It holds ISO: international quality management and CE product certifications. The KBD series machines are known for being energy-efficient and high-precision.
8. Demag Plastic Machinery (Ningbo) Co.
Demag Plastics Group, a German manufacturer, has a significant presence in China through its Ningbo subsidiary. The company is known for precision and high-performance machines used in various industries, including automotive and electronics.
9. L.K. Technology Group Limited
L.K. Group, founded in 1979, has expanded significantly and now includes several companies with a vast product range. The group is one of the largest manufacturers of hot chamber die casting machines globally.
10. ENGEL Machinery (Shanghai) Co.
ENGEL offers turnkey injection molding solutions and emphasizes innovation, flexibility, and responsibility. The company integrates machines, process support, mold planning, and automation, providing a comprehensive service package for different industries.
How to Choose the Right Injection Molding Machine in China
Factors Affecting the Selection of Injection Molding Machine
Important factors include the weight repetition accuracy of the product, mold opening position, and cycle time. Before making a selection, collect details about product dimensions, materials, and weight.
- Product: size (length, width, height, wall thickness), net weight, and total weight
- Materials: raw materials or granulation, and mix ratios with other materials
How to Choose the Injection Molding Machine Model
Start by determining the machine type and series based on product characteristics and plastic types. Consider whether a vertical, angle, or horizontal injection molding machine is suitable, and account for structural differences among manufacturers.
Choosing the Injection Molding Machine Clamping Force
Calculate clamping force based on the product mold design and plastic characteristics. The clamping force must exceed the expansion force generated during high-pressure plastic filling. Excessive clamping force can wear molds and waste energy, so accurate calculations are crucial.
Injection Molding Machine Clamping Device
The clamping force indicates the machine's capacity to process products and should be considered a main parameter of machine specification.
Choosing the Right Injection Molding Machine Type Based on the Mold
- Connecting Column: Determines the mold's maximum width; ensure at least 60% mold-contact with the template
- Mold Size: Should not exceed the inner spacing of the template to avoid bending or breaking during injection
- Mold Capacity: Consider the mold's minimum and maximum thickness to ensure machine compatibility
Injection Weight
Calculate theoretical injection capacity and consider plastic density for accurate injection weight determinations.
Screw Diameter and Speed
Select screws based on raw material, product weight, wall thickness, cycle time, and production needs. Screw speed should balance melting time and energy consumption.
Injection Pressure
Injection pressure is necessary to overcome flow resistance; it varies by product and should be tested during molding processes.
Injection Speed and Injection Rate
Higher injection speeds increase energy consumption but must be balanced with pressure. Speeds above 200 mm/sec may require accumulators for energy efficiency.
Plasticizing Capacity
Plasticizing capacity measures molten plastic output per unit time. Consider not only capacity but also quality factors like mixing uniformity and shear heat.
Clamping Force
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Determine clamping force based on the maximum force the machine can apply, usually expressed in tons or kilonewtons.
Holding Space
The holding space must account for the inner tie bar distance, opening stroke, maximum and minimum mold thickness, and template size.
Ejector Requirements
Consider ejecting force, stroke, and any special requirements like synchronous ejecting or delayed ejecting.
Other Factors
Evaluate nozzle stroke, contact force, empty cycle time, motor power, electric heat power, heating sections, system pressure, machine size, and weight.
How to Check if They are the Right Injection Molding Machine Manufacturer in China
Evaluate product range, test reports, material quality, and certifications to ensure credibility.
Where Can I Find a Good Injection Molding Machine Manufacturer?
Sourcing from Industrial Equipment Expos
Exhibitions connect potential manufacturers, suppliers, and distributors. By attending relevant trade shows, you can meet numerous Chinese injection molding machine manufacturers.
Suggestions for Attending Exhibitions
Schedule meetings with manufacturers in advance to ensure detailed discussions. For those unable to attend, online platforms like Alibaba and Made in China offer alternative sourcing options.
Google Search
Utilize specific search strings like "keyword + manufacturer + China" to find potential manufacturers. Be prepared to sift through multiple pages to find reliable options.
Social Media
Platforms like Facebook, LinkedIn, and YouTube are valuable tools for connecting with manufacturers. Many suppliers post company profiles and updates on these platforms.
We hope this guide helps you navigate the process of finding the best China injection molding machine manufacturers and making informed decisions for your business needs.
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