A home appliance manufacturer in China needed to upgrade its washing machine drum production from standalone machines to an automated line. The existing process required eight operators and ran at 20 seconds per drum. The customer wanted a 12-second production cycle and a direct connection to final assembly to reduce intermediate inventory space.
IDO Technology provided a washing machine drum lock-seaming line covering coil processing through spider screw fastening. The project reduced the required staffing to four operators, with automatic lock-seaming and high-speed transfer forming the core of the solution.
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Project Overview |
Details |
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Customer |
A home appliance manufacturer in China |
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Application |
Washing machine drum production |
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Joining process |
Lock-seaming |
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Automation scope |
Coil processing through spider screw fastening |
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Required staffing |
Reduced from eight operators to four |
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Previous cycle time |
20 seconds per drum |
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New cycle-time requirement |
12 seconds per drum |
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Downstream objective |
Direct connection to final assembly to reduce intermediate inventory space |
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The main challenge was coordinating processing and workpiece transfer across the line. Meeting the 12-second cycle requirement meant that movement between stations had to keep pace with each operation.
The requested connection to final assembly also made downstream material flow part of the project scope, alongside staffing and cycle time.
IDO brought material preparation, drum-body forming, and assembly into one production scope. The main process stages were organized as follows:
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Production Stage |
Main Operations |
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Sheet preparation |
Decoiling and straightening, servo feeding, punching and forming, stacking and destacking |
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Drum-body forming |
V-bending, lock-seaming, rolling and sizing, flanging |
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Assembly and unloading |
Front and rear cover pre-assembly, seaming, spider screw hole piercing, countersinking, spider screw fastening, automatic unloading |
The Auto lock-seaming machine performs the drum-body seam operation. Downstream operations cover front and rear cover assembly, seaming, spider screw hole piercing, countersinking, and screw fastening.
High-speed transfer was another key part of the solution. Workpiece movement between stations was designed to support the 12-second cycle requirement alongside the processing equipment. This addressed the performance of the complete line, including the time needed to move parts from one operation to the next.
Starting from coil material also extended the automation scope into the preparation stages, bringing upstream material processing into the same overall production plan.
Required staffing reduced by 50%. The project reduced the number of operators required for the production process from eight to four. This allows the manufacturer to allocate fewer personnel to the line.
The line was designed around a 12-second cycle requirement. Automatic processing and high-speed transfer were combined to address the customer’s target, compared with the previous 20-second cycle.
Final assembly integration guided the production layout. The customer’s objective was to connect drum production directly to final assembly and reduce the space occupied by intermediate inventory. This requirement informed the organization of processing and transfer.
The line specification also defines quality, changeover, and safety requirements:
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Item |
Requirement or Provision |
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Product acceptance rate |
Required rate of ≥99.5% |
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Lock-seam testing |
A 50 mm specimen is cut from the lock-seamed sheet after lock-seaming for tensile testing to assess joint integrity |
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Same-diameter changeover |
Full-line changeover within 30 minutes with four people |
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Safety provisions |
Fencing, protective guards, interlocked safety doors, emergency stops, and photoelectric safeguarding devices |
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Protective functions |
Low-air-pressure protection and electrical overload and short-circuit protection |
This project is relevant to manufacturers using standalone drum-processing machines who want to reduce staffing requirements and coordinate production with downstream assembly.
The starting point is the existing production process: which operations require personnel, where workpieces wait between stations, and what cycle the final assembly line needs. These factors help define the appropriate automation scope.
IDO provides turnkey automation solutions covering design, manufacturing, installation, commissioning, training, and after-sales support, with the delivery scope defined for each project.
For equipment and process details, explore the Fully Automatic Washing Machine Drum Assembly Line (Lock-Seaming Type).
To discuss a similar upgrade, send IDO Technology your drum drawings, material grade and thickness, target cycle time, current staffing arrangement, and available floor space. These details provide the basis for evaluating the automation scope and the connection to your downstream assembly process.