中川電化産業 List of Products and Services

The Nakagawa Denka Group's efforts in mold making began in the 1970s. To accommodate hundreds of different parts in small quantities and with short delivery times, we have established a system for rapid mold production and accumulated technology and know-how regarding mold structures. To achieve the production of a wide variety of molds with high quality and short lead times, we have built an integrated system that allows for efficient design and manufacturing. We handle the design of processes such as press processing, injection molding, insert molding, hot melt molds, production equipment, and work improvement jigs. From this experience and know-how, we excel in designing molds and related equipment with consideration for durability, maintainability, and productivity. **Features** - Integrated system from design to manufacturing - Achieving high-quality and short lead times for a wide variety of mold production *For more details, please refer to the PDF materials or feel free to contact us.*

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The origin of Nakagawa Denka Group's metal processing technology lies in the press processing technology from the founding days and the commitment to technical refinement. In the 1970s, we began to seriously engage in precision metal processing by introducing AGIE wire electrical discharge machines to improve mold processing accuracy and to perform more complex shape processing. Our company has established a system for producing high-precision parts and molds in a short period. We process high-hardness materials and cemented carbide using machining centers, wire electrical discharge machines, die-sinking electrical discharge machines, and grinding machines. With machining center processing, we can also perform 3-axis processing (complex curved surfaces, complex surfaces) and mold repairs and maintenance using laser welding machines. We are advancing our system towards micron-level precision processing to further improve accuracy. [Features] ■ Realization of a high-precision processing system ■ Processing of high-hardness materials and cemented carbide is also conducted *For more details, please refer to the PDF document or feel free to contact us.

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The hot melt molding of the Nakagawa Electric Group began with the supply of in-vehicle components for hybrid vehicles. Through repeated trial and error regarding materials, surface roughness, gate positions, and cooling circuits, we developed unique molds and molding units. Compared to conventional potting molding, our process allows for molding at low pressure and low temperature. Additionally, as a result of our unique research and development, we have minimized damage to circuit connections while enabling weight reduction and miniaturization. Furthermore, by using transparent materials, it is easy to check the circuit connections even after molding. 【Features】 ■ Molding at low pressure and low temperature ■ Minimizing damage to circuits *For more details, please refer to the PDF document or feel free to contact us.

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The history of Nakagawa Denka Group's injection molding began in the early 1970s. In development, we have made various efforts from considering production composition to selecting materials, depending on quantity, variety, and application. We have accumulated experience, unique technology, and know-how, and we continue to take on new challenges. We have established a system capable of producing a wide variety of parts, from mass production to small-batch production of product samples. To achieve high-quality and stable injection molding, we thoroughly pursue quality and stability by independently designing screws and cylinders for injection molding machines dedicated to special materials. [Features] ■ Pursuit of high quality and stability ■ Unique designs for dedicated injection molding machines *For more details, please refer to the PDF document or feel free to contact us.

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The insert molding technology of the Nakagawa Electric Group has advanced alongside injection molding technology and press processing technology. One of our strengths is that we have maintained a consistent system for over 50 years, handling the entire process from mold design to molding, assembly, and quality inspection. We have also accumulated a wealth of know-how that is utilized in production, including expertise in parts design and layout that adapts to the constrained spaces of products. [Features] ■ Consistent response across all processes from design to quality inspection ■ Accumulation of extensive know-how utilized in production *For more details, please refer to the PDF materials or feel free to contact us.

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Since the 1950s, the Nakagawa Denka Group has advanced its pressing technology to supply high-quality retainers to major domestic bearing manufacturers. At the same time, we began working on hoop forming systems for manufacturing components of our own products and an inner and outer punching system for gear shapes utilizing hob cutting methods. We perform pressing for a wide variety of products, including time switches for home appliances and actuators equipped with geared motors, and we are advancing the construction of a progressive die pressing system that consolidates single-step processes by leveraging the know-how cultivated during this process. In recent years, we have also expanded into pressing for automotive electrical components. 【Features】 ■ Technology and know-how passed down through pressing processes ■ Expansion into pressing for automotive electrical components ■ Establishment of a system capable of handling diverse and large-scale production *For more details, please refer to the PDF materials or feel free to contact us.

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Home appliances are always expected to have higher quality and new features than before. Naturally, high quality is also required for the functional components that make up home appliances. At Nakagawa Electric Group, we have continuously improved our production technology to support the mass production of high-quality functional components, from production line design to processing, assembly, and inspection, in order to meet these demands. We have a strong track record in designing production lines for efficiently mass-producing complex functional components consisting of multiple mechanisms, which we excel at. We also have extensive experience in flexible designs, such as attachment changes to accommodate detailed specification modifications. [Features] ■ Production line design for functional components with abundant know-how ■ Extensive experience in flexible designs, including attachment changes to accommodate detailed specification modifications *For more details, please refer to the PDF materials or feel free to contact us.

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The Nakagawa Electric Group has been supplying various functional components for home appliances for over 60 years, starting with spring-driven timers in the 1950s. We produce a wide variety of products, not only timers for home appliances and small AC motors but also electrical components for hybrid vehicles derived from their development. We are engaged in the design and development of mechanical functional components that combine units such as planetary gears, induction rings, and mechanical clutches, as well as the combination of those units. In recent years, we have been expanding our know-how in mechanical functional components to various fields. [Features] ■ Design and development of mechanical functional components ■ Providing products refined under strict requirements and conditions *For more details, please refer to the PDF materials or feel free to contact us.

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The Nakagawa Electric Group has been supplying functional components such as timers to domestic home appliance manufacturers since the 1950s. Leveraging our development technical skills and product commercialization know-how, our comprehensive production capabilities have connected the prototyping of original functional components, jointly developed functional components, and housings to technological development and mass production. Additionally, we have a wide range of achievements in special prototyping through excellent equipment and skilled processing techniques. We conduct a broad range of activities from prototyping to verification, including not only component prototyping but also functional component operation verification, durability verification, practical verification, design verification, and prototype production for exhibition PR. [Features] ■ Capable of special prototyping with excellent equipment and skilled processing techniques ■ "Prototyping capability" accumulated through continuous development and prototyping ■ From prototyping to durability verification and prototype production for exhibition PR *For more details, please refer to the PDF materials or feel free to contact us.

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The Nakagawa Electric Group is a company engaged in the development and design of custom parts for home appliances and residential equipment. We handle everything from the development and design of small mechanical components to manufacturing, providing custom parts. Additionally, we also manufacture and assemble automotive parts, conduct structural design, and build production systems, as well as create molds. 【Business Activities】 ■ Development and design of custom parts for home appliances and residential equipment ■ Manufacturing, assembly, and structural design of automotive parts ■ Building production systems and mold making *For more details, please refer to our catalog or feel free to contact us.

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