Joihey Quick Color Change Powder Room Use Case

2025 05/10

With the continuous advancement of technology and increasing demands for quality of life, kitchen appliances are playing an increasingly important role in modern households. Electrostatic powder coating, as an efficient and environmentally friendly advanced surface treatment technology, has gradually become a critical component in the production of kitchen appliances.

The client is a large kitchen appliance enterprise integrating design, development, and production. It specializes in the R&D and manufacturing of various types of integrated stoves and range hoods, possessing industry-leading technological expertise. As one of the few manufacturers domestically and internationally focused exclusively on the production of kitchen appliances, the company has developed over 400 different types of kitchen appliance products since its establishment. Its products are exported to Southeast Asia, the Middle East, Europe, the United States, and many other countries and regions. With more than 60 patents for range hood technologies, it has filled several gaps in the domestic market and serves as a key supplier for top-tier brands in China.

In January 2023, after multiple on-site inspections and project discussions, our company tailored two sets of fully automated movable large-cyclone rapid color change systems based on the client’s coating requirements and facility characteristics. These systems were officially launched and put into operation in April 2023. By leveraging automated equipment and intelligent digital services, we assisted the client in achieving an upgrade and leap in smart manufacturing. The new production model has enabled the development of more high-quality, low-cost products, realizing an organic and coordinated improvement in quality, efficiency, environmental sustainability, and intelligence.

Based on the customer's requirements and the specific structure of range hoods, through multiple rounds of technical discussions and on-site studies, the automated spraying equipment we provided for the final project implementation needed to meet the following customer demands:(1) Due to the low height of the workshop, the complete set of spraying equipment had to comply with the site’s height restrictions while ensuring optimal performance.(2) During color change operations, production efficiency must not be affected. The production line must not need to stop, and the system must allow one powder room to undergo color change while another continues normal spraying operations.(3) The powder room is equipped with a fixed gun mounting system, enabling spray guns to adjust their angles and positions at any time according to the structure and characteristics of different workpieces.

After numerous on-site evaluations, it was determined that the client's facility features generally low ceiling heights. Conventional single-pipe cyclone separator setups would have significantly compromised powder recovery rates due to these height constraints. Remaining committed to our customer-first philosophy, we specifically developed and engineered a dual-pipe cyclone separator system for this scenario. This solution not only resolved the challenge of equipment installation but also ensured outstanding recovery performance.

The powder supply center utilizes PLC programming and is operated via a touchscreen interface, which displays real-time operational statuses, fault alarms, parameter settings, and manual/automatic operation modes. It allows for the preset and easy modification of multiple predefined parameters tailored to different workpieces. Color changeovers can be performed quickly and easily by a single operator, reducing labor requirements and improving efficiency.A single lifting unit can simultaneously carry six automatic spray guns for reciprocating vertical movement. To accommodate the client's limited space, the base of the lifter was designed with a compact footprint, ensuring it fits even in narrow areas. Furthermore, the height and travel distance of the lifter were custom-designed to guarantee complete coating coverage while helping the client achieve optimal spraying results at the lowest possible cost.

A single fixed gun mount can hold four spray guns, enabling pre-spraying of hard-to-reach areas on both sides of the workpiece to prevent missed or incorrect spraying.Depending on the workpiece structure, the fixed guns can adjust their position and angle accordingly.Pre-spraying reduces the need for manual touch-ups and improves production efficiency.To meet the client's need for rapid color changes in two-tone coating and their high conveyor speed, we provided an automated powder room mobile platform. The client can pause and move one powder room aside for color change while continuing to spray another color, ensuring uninterrupted production. This allows preparation for the next color without stopping the line, maintaining quality while improving efficiency.

In the production of kitchen appliances, the application of electrostatic powder coating equipment not only enhances product quality and appearance but also delivers significant economic benefits. Compared to traditional liquid coating technology, electrostatic powder coating is more efficient, saving both coating materials and energy. Furthermore, the process requires no solvents, reducing waste generation and disposal costs. As a result, the use of electrostatic powder coating equipment in kitchen appliance manufacturing not only meets environmental requirements but also improves corporate competitiveness and profitability.

Previous:Customer Case Study——Leading Forklift Manufacturer Implements Automated Electrostatic Powder Coating Booth, Achieving Quality Enhancement, Efficiency Boost, and Comprehensive Eco-Smart Upgrade!

Next:Fire Safety: A Shared Responsibility.