- China Plastic Precision Technology manufacturer
Since its founding, Dongguan Tongrui Machinery Co., Ltd. has always focused on the design, production, and sales of auxiliary supporting equipment for plastic molding, and has continued to deepen its efforts in the field of plastic intelligent control. The company is located in Dongguan, a world-famous manufacturing city. It is a technology-innovation enterprise integrating design, production, and sales, and has a group of professionals with rich industry experience. In the core track of precision metering, Tongrui Machinery, with technological breakthroughs in its gravimetric blending mixer series products, provides high-precision and high-stability raw material proportioning solutions for injection molding, extrusion, blow molding, and other process links.
Precision determines the lower and upper limits of quality
In the field of plastic processing, small deviations in raw material proportioning can be amplified by the molding process, ultimately reflected as product color differences, fluctuations in mechanical properties, or even batch scrapping. Tongrui Machinery's gravimetric blending mixer precisely targets this pain point, controlling the blending proportioning precision within the range of ±0.1% to ±0.3%, and can meet various stringent requirements from trace addition of masterbatch to precise mixing of multi-component raw materials. Taking plastic injection molding as an example, when the masterbatch addition ratio is less than 5%, the equipment can strictly lock the precision at ±0.1%, which means that the color consistency between each batch of products has obtained reliable equipment-level assurance.
The realization of this precision does not rely on the upgrade of a single component, but is built on a systematic technical architecture. The equipment controller adopts the German Siemens PLC control system, with advanced batching algorithms as the computing core, ensuring that every batching decision is based on an accurate mathematical model rather than empirical estimation. More critically, the equipment has automatic calibration and compensation capabilities—the system automatically completes the calibration process each time it is started, continuously monitors the weighing data of each batch during production, and dynamically corrects subsequent batches according to actual deviations, so that precision does not decay or drift during continuous operation.
From sensors to algorithms: the hard power behind precision
The foundation of precision lies in the coordination of sensing and computation. Tongrui's gravimetric blending mixer uses high-precision weight sensors, combined with a new-generation single-chip microprocessor, achieving faster computing speed and stronger anti-interference capability. In the face of common workshop interference factors such as vibration and temperature changes, the equipment uses a vibration prevention function and self-optimizing algorithms to minimize the impact of external interference on metering precision. High-speed and high-precision AD acquisition technology ensures fast and stable collection of weight signals, enabling the equipment to maintain stable precision output even in continuous production with a tight batching rhythm.
At the structural design level, Tongrui's gravimetric blending mixer fully considers operational convenience and process adaptability. The touch screen operation interface simplifies parameter setting and recipe switching processes. The recipe storage function allows users to call commonly used proportioning schemes with one click, greatly shortening changeover preparation time. The equipment provides a variety of screw diameter specifications—six options from 12mm to 30mm—so users can flexibly match them according to the addition ratio and raw material characteristics in actual production, ensuring ideal metering results under different working conditions. All materials are evenly mixed after gravimetric metering. In the micro-metering link, precision can be strictly controlled at ±0.1%, with no precision loss in the entire process from weighing to mixing.
Tongrui Machinery's pursuit of product quality runs through every detail. The company adheres to the business purpose of "working together with one heart and forging ahead with determination," takes "plastic intelligent control" as its orientation, and takes customers' actual production needs as the starting point for technological iteration. The company not only provides standard models, but can also develop customized models that meet special requirements according to customer wishes, carrying out targeted optimization for specific raw material characteristics, space limitations, or capacity goals. From electronic and automotive parts to medical products, optical discs, plastic pipes and sheets, cables, packaging, and other application fields, Tongrui's gravimetric blending mixer provides reliable precision metering support for plastic processing enterprises of different scales with verifiable precision data and continuously stable operation performance.
