プロネック List of Products and Services

We, Pronex, are a specialized company in contract production of coils! Pronex has manufacturing bases in Thailand and is equipped to supply products anywhere in the world, primarily focusing on Asia. At our factory in Thailand, we can handle everything from coil winding to mounting, molding, and assembly in a consistent manner. We also perform plastic molding and various assembly processes tailored to your needs, flexibly accommodating necessary steps. To solve our customers' challenges, we conduct various technical verifications of coils and respond to different quality requirements for each product based on our years of experience. In this document, you can see examples of improvements in coil manufacturing challenges, including cases where we introduced the "automatic adhesive application device" developed by Pronex's technical team and achieved a smooth production flow through the establishment of a consistent production line. [Examples of Cases (Partial)] ■ Automation of the adhesive application process to improve production efficiency and quality ■ Prevention of wire breakage during soldering through twist processing ■ Achieving performance requirements with precise tension control using servo tension ■ Improving manufacturing efficiency of air-core coils by introducing an air nipper system *For more details, please download the PDF or feel free to contact us.

• Inductor Coil

Tension management of coil winding is an important factor that influences coil quality and product performance. By maintaining appropriate tension, various benefits can be expected, including: ◎ Winding Alignment The layers of winding can be uniformly aligned, minimizing gaps and overlaps. ◎ Stability of Electrical Characteristics Electrical characteristics such as inductance and resistance values become stable, improving product performance. ◎ Assurance of Mechanical Strength With the winding securely fixed, durability against vibrations and shocks is enhanced. ◎ Efficiency of the Manufacturing Process Winding operations proceed smoothly, reducing the rate of defective products and improving overall manufacturing efficiency. Therefore, our company, which specializes in coil production under appropriate management, is currently offering materials that clearly explain the basic concepts of tension, management methods, and types of tension devices based on our extensive knowledge. *For more detailed information, please refer to the download button below.*

• Inductor Coil

This document explains the main methods of wireless charging, their characteristics, and coil design. Wireless charging is a technology that supplies power to devices without using cables. There are various methods of wireless charging, each with its own characteristics regarding transmission distance and efficiency. It is important to choose the appropriate method according to the application. At Pronex Co., Ltd., we support various wireless charging technologies with high-quality coils and a comprehensive support system. We will propose solutions suitable for your product development, so please feel free to contact us. [Methods] ■ Magnetic Induction Method (Inductive Coupling) ■ Magnetic Resonance Method (Resonant Inductive Coupling) ■ Electromagnetic Wave Method (Radio Frequency) ■ Electric Field Coupling Method (Capacitive Coupling) *Detailed information can be viewed through the related links. For more information, please refer to the PDF materials or feel free to contact us.

• Charger

This document provides a detailed explanation of the main types of resins used for coil bobbins and their characteristics, as well as points for selecting the appropriate resin. Coil bobbins are important components used in winding. The resin used for these bobbins directly affects the performance and durability of the coils, making the selection of the right material essential. Choosing the most suitable resin by comprehensively considering usage conditions and costs is key to maximizing the performance and durability of the coils. 【Main Types of Resins】 ■ Polyamide (Nylon) ■ Polycarbonate ■ Polyphenylene Sulfide (PPS) ■ Polybutylene Terephthalate (PBT) *For more detailed information, please refer to the related links. For further details, please check the PDF materials or feel free to contact us.

• Inductor Coil

Winding is a key design point that involves factors such as the material and thickness of the wire, the number of turns, the winding direction, and the shape. By appropriately setting these elements, it is possible to achieve performance suited to the intended purpose. Winding can be done manually, but in modern times, automatic winding machines are used for mass production. Automatic winding machines can manufacture coils at high speed and with high precision, playing an important role in the manufacturing industry. *For more detailed information, please refer to the related links. For further details, please check the PDF materials or feel free to contact us.*

• Inductor Coil
• Winding Machine

A voice coil motor is a type of motor that utilizes the magnetic field generated by direct current to perform vibration and positioning. It is a lightweight design with a fast response speed, and unlike solenoids that only perform reciprocating motion, it is a fast-response motor capable of ultra-precise control at the micrometer level, constant velocity acceleration control, and force control. Due to its characteristics, it is widely used in industrial fields that require high-precision positioning and high-speed vibration. *For more details, you can view the related links. For more information, please refer to the PDF materials or feel free to contact us.*

• Inductor Coil

Electromagnets are used in a wide range of applications, including motors, solenoids, and relays. By applying the principles of electromagnets, which differ from those of permanent magnets, many advantages can be gained, making it possible to create innovative technologies. There are two types of magnets: electromagnets and permanent magnets. Permanent magnets possess magnetic force due to their material itself, so they do not require an electric current and maintain their magnetic force permanently. *For more details, you can view the related links. For more information, please refer to the PDF materials or feel free to contact us.*

• Other motors

A wireless power transmission coil is a device that uses coil technology to send power for charging electronic devices such as mobile phones, smartphones, and tablets. This article explains the principles, structure, features, and application fields of wireless power transmission coils. Wireless power transmission coils utilize electromagnetic induction to wirelessly transmit electrical energy. *For more detailed information, please refer to the related links. For further details, please check the PDF materials or feel free to contact us.*

• Inductor Coil

Overmolded coils (coil encapsulation molding) are a molding technology that covers the entire coil with resin. By enveloping the entire coil in resin, its durability and safety are enhanced. ■Advantages of Overmolding 1. Improved Durability Since the entire coil is covered with resin, it is less affected by external environmental factors, allowing the coil's performance to remain stable even in harsh conditions. *For more details, please refer to the related links. For more information, please check the PDF materials or feel free to contact us.

• Inductor Coil

Since its establishment in 1986, our company has been manufacturing a wide variety of air core coils, bobbin coils, and coil assemblies. All of these coils are produced using our own winding machines and jigs that we manufacture in-house. They are made by our engineers and operators, who have extensive experience. Additionally, we have accumulated a wealth of production technology, ranging from small lot manufacturing to mass production. *For more details, you can view the blog through the related links. For more information, please refer to the PDF materials or feel free to contact us.*

• Inductor Coil
• Winding Machine

PRONEC is equipped with scalability that can accommodate everything from prototypes to small lots and mass production. If you need coils for mass production prototypes, please feel free to contact us. In the case of small lots, there are initial costs for jig production and line assembly, so the costs are higher compared to mass production. However, we have manufacturing facilities that can meet various requirements such as the performance and shape your company desires, and we have many experienced engineers and operators on staff. *You can view detailed content on the blog through the related links. For more information, please refer to the PDF materials or feel free to contact us.*

• Inductor Coil

Our factory in Thailand is equipped not only with winding machines but also with resin molding machines for bobbins and molds. We have introduced winding machines manufactured in-house and Japanese-made resin molding machines, and our production line is operated by experienced engineers and skilled operators. As a result, PRONEC can manufacture high-quality and reliable bobbin-wound coils, molded coils, and leaded coils for circuit board assembly in a one-stop service. *For more details, you can view the related links on our blog. Please refer to the PDF materials or feel free to contact us for more information.

• Winding Machine
• Inductor Coil

The bobbin-wound coils require not only precision and strength of the winding but also the accuracy and durability of the bobbin, which are factors that influence productivity. PRONEC has introduced Japanese-made resin molding machines at its factory in Thailand, where local engineers and operators are engaged in the production of resin parts, including bobbins, with Japanese quality. Additionally, it is possible to perform resin molding in the later stages to enhance waterproofing and seismic resistance. *For more details, you can view the related links on the blog. For further information, please refer to the PDF materials or feel free to contact us.*

• Inductor Coil

Various types of enamel wire are used for winding coils. The types of enamel wire include polyurethane wire (UEW), polyester wire (PEW), polyester-imide wire (EIW), and polyamide-imide wire (AIW). First, let's take a look at the characteristics of each. *For more detailed information, please refer to the related links. For further details, please check the PDF materials or feel free to contact us.*

• Inductor Coil

Coils are common components used in many electronic devices and electrical products, but they can also be utilized as sensors. This article provides an overview of how coils are used as sensors and details their applications. A coil is an electronic component shaped like a wire wound in a spiral. Generally, the wire is wound around a core made of iron or a magnetic material. By passing current through the coil, it can generate a magnetic field, and various applications can be realized by utilizing this characteristic. *For more detailed information, please refer to the related links. For further details, please check the PDF materials or feel free to contact us.*

• Sensors

When considering the coil you want to create, the productivity can vary significantly depending on which winding specifications, such as shape, resistance value, and inductance, you prioritize. In this article, we will specifically explain the points to consider when designing a coil. Coil design refers to deciding on the shape of the coil, the type of wire to use, and the number of turns, among other winding specifications. We will determine specific numerical values and create drawings. We will briefly explain the coil's shape, wire, and number of turns. *For more detailed content of the blog, please refer to the related links. For more information, please check the PDF materials or feel free to contact us.*

• Inductor Coil

Copper is an important material in the manufacturing of industrial products and the construction industry. The price of copper fluctuates based on the balance of supply and demand in the market and the state of the economy. To understand the price of copper, two indicators are commonly used: the copper base price and the LME price. This article will provide a detailed explanation of the differences between the copper base price and the LME price. *For more detailed information, please refer to the related links. For further inquiries, please feel free to contact us or check the PDF materials.*

• Other metal materials

We would like to introduce a case where we achieved stabilization of quality by establishing a consistent production system at our company for products that were previously distributed among multiple companies for each process. By modifying various parts based on a general-purpose winding machine and adjusting the takt balance of each process, we consolidated the molding, winding, assembly, and overmolding processes into a single line. This has significantly improved productivity while controlling work-in-progress inventory. 【Case Overview】 ■Challenges - Distribution among multiple companies for each process ■Benefits - Stability in processes and quality - Clarification of responsibility during trouble occurrences, and faster investigation and countermeasures - Shortened delivery times *For more details, please refer to the PDF document or feel free to contact us.

• Winding Machine

We would like to introduce a case study on improving quality control operations through the introduction of software that automatically records, calculates, and analyzes coil measurement data. When creating inspection reports manually, we received feedback from customers about errors and difficulty in reading. By implementing the automatic measurement software "QC Pro," the time required to create inspection reports for coils has been significantly reduced, leading to improvements in quality control operations. [Case Summary] ■ Benefits - Improvement in quality control operations - Easier management with traceability through search functions - Provision of accurate inspection reports to customers ■ Challenges - Regular system inspections are necessary *For more details, please refer to the PDF document or feel free to contact us.

• Inductor Coil

We would like to introduce a case study on improving work efficiency up to the terminal cutting process after winding. Typically, in the case of hollow coils, to cut the specified terminal length after winding, the operator uses a jig to perform the subsequent process. By systematizing the movement of the air nipper to the specified coil terminal and cutting it to the designated terminal length, we significantly improved work efficiency up to the product discharge. 【Case Overview】 ■ Effects - Increased production capacity - Prevention of variability due to manual work - Reduction of man-hours ■ Challenges - Limited to specific product shapes *For more details, please refer to the PDF document or feel free to contact us.

• Inductor Coil

We would like to introduce examples of coil performance and process improvement using servo and electronic tension. In this improvement project, the hollow coils for motors and actuators required ultra-precise aligned winding and high tension adjustment for the outer diameter specifications. By using servo tension and electronic tension that can be controlled with high precision, we were able to apply the internal standard limit tension and meet the customer's performance requirements. [Challenges] - It is necessary to determine the type and value of tension based on the customer's coil specifications. - The hollow coils for motors and actuators require ultra-precise aligned winding and high tension adjustment for the outer diameter specifications. *For more details, please refer to the PDF document or feel free to contact us.

• Inductor Coil

To prevent disconnection, we recommend twist processing only for the winding part (terminal part). In the products requested from our company, there have been numerous cases where the disconnection issues after soldering were improved through twist processing. If you are experiencing disconnection issues during soldering, please feel free to consult us. 【Case Summary】 ■ Issue - Disconnection occurs during soldering ■ Effect - Improvement of disconnection issues after soldering - Yield improvement *For more details, please refer to the PDF document or feel free to contact us.

• Soldering Equipment

We would like to introduce a case where production capacity has improved due to an automatic adhesive machine. In the previous manual manufacturing process, there were challenges in stably producing hundreds of thousands of products per month. The dispenser accurately supplies the adhesive, and the parts feeder appropriately supplies the components, improving the reproducibility and precision of product adhesion. [Challenges] - There was a lack of consistency in the product adhesion process, which could potentially affect material waste and quality stability. - Concerns were also raised about the high number of man-hours and the risk of human error. *For more details, please refer to the PDF document or feel free to contact us.

• glue

At Pronex Co., Ltd., we manufacture coils with various specifications. We have a manufacturing base in Thailand, where many companies are expanding, and we have established a system to supply products worldwide, primarily in Asia. Additionally, our factory in Thailand has obtained ISO 9001 and IATF 16949 certifications. We are continuously working to improve our quality performance. 【Strengths of Pronex (Partial)】 <Development capabilities for winding machines and jigs> ■ We have developed our own air-core coil winding machine, capable of handling various types of wires, including round wires with conductor diameters from φ0.02 to φ0.90, stranded wires (Litz wires), and flat wires. ■ To solve our customers' challenges, our factory in Thailand conducts various technical verifications of coils on a daily basis. *For more details, please refer to the PDF document or feel free to contact us.

• Inductor Coil

We would like to introduce a case of quality stabilization using our in-house automatic soldering equipment. To manage solder levels in the tens of microns and prevent solder ball scattering, we developed automatic soldering devices (rotary type and arm type) to achieve quality stabilization. By incorporating all possible countermeasures against defects based on past performance, we have reduced solder ball scattering. 【Effects】 ■ Stabilization of solder quality ■ Reduction of work and inspection processes ■ Improvement of yield *For more details, please refer to the related links or feel free to contact us.

• Solder

To achieve stable mass production of several million products per month while keeping initial costs low, we improved a multi-axis winding machine that typically performs one winding per axis to realize multiple windings of five per axis. It took six months to stabilize quality, but the production capacity per machine has dramatically increased. Although this production method increases setup time in exchange for production capacity, it offers significant cost advantages when there is a production quantity above a certain level. 【Effects】 ■ Increased production capacity due to the increase in the number of windings ■ Reduction in initial costs ■ Space savings *For more details, please refer to the related links or feel free to contact us.

• Other production management systems

In response to the increase in customer demand, we have worked on improving the efficiency of the characteristic inspection and testing processes. Previously, we conducted four separate inspection and testing processes: resistance testing, dielectric strength testing, insulation resistance testing, and impulse testing. However, by standardizing the probes and systematizing the switching of inspection machines and product discharge, we have significantly improved work efficiency. When the measurement results are OK, the products are automatically discharged, and in the case of NG, they are discharged into a dedicated box. 【Effects】 ■ Increased production capacity ■ Prevention of variation in measurement conditions due to manual work ■ Prevention of oversight of inspection results through visual checks *For more details, please refer to the related links or feel free to contact us.

• Other inspection equipment and devices

We would like to introduce a case where the production capacity of small transformer secondary windings was improved through multi-axis multi-piece production. The challenge was the increased setup time during the resumption of production. To respond to the customer's increased demand, PRONEC transitioned the secondary winding process of small transformers, which was previously manufactured using a single-axis winding machine, to a multi-axis winding machine with a proven track record, increasing the production capacity from 150K pieces/month to 300K pieces/month. This improvement made it possible to meet increased production requests without adding personnel to the production line. 【Effects】 ■ Increased production capacity ■ Reduction of defects due to improved bobbin positioning accuracy ■ Quality improvement due to reduced manual labor by operators *For more details, please refer to the related links or feel free to contact us.

• transformer