Integrated Production from Bobbin Injection Molding to Assembly | Consolidating Manufacturing Processes in Thailand at PRONEC

PRONEC CO., LTD. has established a comprehensive integrated production system in Thailand, covering everything from bobbin injection molding and wire winding to final part assembly. This consolidation of manufacturing processes ensures stable quality and reduces production lead times, supporting efficient local component procurement in Thailand.

Table of Contents

• The Value of Integrating 4 Manufacturing Processes into a Single Line
• Scope of Operations: From Injection Molding to Final Assembly
• Building Production Lines with In-House Developed Machinery
• Quality Management System and Traceability
• Frequently Asked Questions (FAQ)

The Value of Integrating 4 Manufacturing Processes into a Single Line

In traditional coil manufacturing, processes such as bobbin injection molding, wire winding, and assembly are often distributed across multiple manufacturers. This creates inconsistencies in production pacing, leading to increased work-in-progress inventory and unstable quality. Furthermore, when defects occur, identifying the root cause is often time-consuming, increasing the risk of delivery delays.

At PRONEC, we solve these issues by creating an integrated production line that combines injection molding, winding, assembly, and overmolding within a single factory in Thailand. Consolidating every step into one production line eliminates risks, reduces costs, and ensures a seamless manufacturing process.

With this system, if an error occurs, we can quickly identify the cause and implement immediate countermeasures. Centralizing responsibility reduces the management burden on buyers and enables the delivery of consistently high-quality products within shorter lead times.

Scope of Operations: From Injection Molding to Final Assembly

The primary processes supported within our integrated production line are as follows:
Bobbin Injection Molding: In-house production of plastic bobbins and related components.
Wire Winding: High-precision winding using a wide variety of winding machines.
Assembly: Automated soldering, lead wire connection, FPC (Flexible Printed Circuit) integration, and casing assembly.
Secondary Processing: Automated dispensing (gluing) and resin overmolding.
Property Inspection: Resistance measurement, dielectric withstand voltage testing, insulation resistance testing, and impulse testing.

Building Production Lines with In-House Developed Machinery

For an integrated production line to achieve maximum efficiency, it requires more than simply lining up machinery. Preceding and subsequent processes must be connected seamlessly. If one step is completed too quickly while the next step lags behind, it creates stagnant inventory and increases the burden of quality control.

We modify standard winding machines internally to balance the cycle times across the entire production line. For example, we install air nippers to automatically cut wire ends after winding, and we use automated soldering machines capable of handling tens-of-microns precision to eliminate inconsistencies caused by manual labor.

Our capability to modify equipment and build winding machines in-house allows us to create optimal production lines tailored to specific part shapes, maintaining high yield rates even in mass production.

Quality Management System and Traceability

When component procurement is scattered across multiple suppliers, managing product history data becomes highly complex. PRONEC centralizes all data management using the QC Pro automated software, which automatically records, calculates, and analyzes measurement results. This method prevents manual entry errors, provides customers with highly accurate inspection reports, and enables rapid data retrieval for full traceability.

Completing every step within a single company creates a continuous quality assurance system. Customers are relieved of the burden of managing multiple suppliers and can easily verify complete production records.

Frequently Asked Questions (FAQ)

Q: Can we request only a specific process, such as only wire winding?
A: Yes. Although our core strength is integrated production, we are fully equipped to handle specific standalone requests according to customer needs. We also welcome prototyping consultations aiming for full integrated production in the future.

Q: Can we start an order from the bobbin mold production phase?
A: Yes. We offer comprehensive support that includes bobbin injection molding. We can also propose optimized supply chains for related materials, such as lead wires, or assembly components like FPCs, to establish the most efficient procurement system.

Q: How fast is the response time if an issue occurs?
A: Because every step is completed within our own production line, we can investigate the root cause and implement corrective actions extremely quickly. This minimizes the time wasted on coordinating and troubleshooting across multiple external suppliers.

※ For more details, please download the attached document or fill out the inquiry form below.