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Stepping motor controls knife pressure for material adaptability and prevents irregular cutting.
Independent air cylinders ensure reliable clamping of materials with different thicknesses.
Digital control allows selection/establishment of various eyelet and straight buttonhole shapes.
Reliable thread-trimming mechanism ensures efficient sewing and bartacking.
Features include new machine head, direct-drive motor, excellent maintainability, and improved working environment.
Features separate knives for eyelet and straight sections, enabling varied buttonholes without knife changes.
Eliminates thread securing by tucking needle thread in finished seams for neatness.
The JUKI MEB-3200 Series is a computer-controlled eyelet buttonholing machine, designed for precision and efficiency in creating buttonholes with a trimmer for needle and looper thread, and an integrated gimp function. This advanced machine offers a high degree of control over the sewing process, making it suitable for a wide range of applications from men's and ladies' wear to jeans, cotton pants, and trousers.
At its core, the MEB-3200 Series features an Active Tension Mechanism, a world-first computer-controlled thread tension system that electronically manages both needle and looper thread tensions. This innovative mechanism allows for digital establishment of thread tensions directly on the operation panel, tailored to specific sewing conditions. Data can be registered on a pattern-by-pattern basis, ensuring consistent reproduction of desired sewing conditions. Unlike conventional machines where reproducing exact sewing conditions can be challenging, the MEB-3200 simplifies this process, enabling immediate response to material changes and significantly reducing setup time. This capability is crucial for maintaining high-quality seams across different materials and designs.
The machine allows for separate tension settings for various sections of a buttonhole, such as eyelet and parallel sections, as well as for bartacking sections. This granular control ensures smooth stitch formation and prevents issues like loose stitches, slip-off, or unraveling at the beginning and end of sewing. The threading process itself is made easier due to fewer parts requiring threading, allowing for quicker and more convenient operation compared to traditional buttonholing machines.
A key feature contributing to seam quality is the vertically driven cloth cutting knife, controlled by a stepping motor. This motor-driven knife allows for easy adjustment of knife pressure via the operation panel, adapting to different materials and preventing irregular cutting. Knife pressure data can also be registered per pattern, optimizing durability for both the cloth-cutting knife and knife guard. Operators can select between cut-before and cut-after knife operations. The stepping-motor control eliminates the common issues associated with air-driven knives, such as dull cutting or breakage of parts, and removes the need for a large-capacity compressor, as the machine uses less compressed air.
The MEB-3200 also incorporates separately driven right and left work clamps, each powered by an independent air cylinder. This design ensures reliable clamping of materials of varying thicknesses, preventing them from flopping during the sewing process and contributing to consistent seam quality.
For enhanced flexibility, the machine offers a wide selection of eyelet and straight buttonhole shapes, which can be chosen or customized on the operation panel. It comes standard with 10 stitching shape patterns, with the capacity to store up to 89 different patterns in memory. This versatility allows for the creation of various buttonhole styles, including those with or without bartacks, taper bars, or round bartacks.
The MEB-3200SS model, in particular, is equipped with a multi-cutting device. This device features a separate cloth cutting knife with two blade sections: one for eyelet buttonholes and one for straight buttonholes. This allows the machine to sew both eyelet buttonholes on a front body and straight buttonholes on a lapel without changing the knife, a process that traditionally required two different buttonholing machines. By performing two kinds of buttonholing, the MEB-3200SS significantly reduces setup time, including thread changes, thereby increasing productivity. The multi-cutting device also enables the machine to sew buttonholes of various sizes (18mm to 38mm for eyelet, 10mm to 38mm for straight) without changing the knife guard, by dropping the knife multiple times per cycle. This makes it ideal for small-lot production and frequent design changes. The MEB-3200SS also includes a needle thread clamp device as standard.
The MEB-3200A model is also provided with a needle thread clamp device, which eliminates the need for manual thread securing by tucking the needle thread into the finished seams. This device ensures that the needle thread is retained at the start of seam formation, from the very first stitch.
The easy-to-operate multi-functional operation panel is a central interface where all sewing specifications can be established and selected. This digital control simplifies complex adjustments, making the machine user-friendly even for intricate patterns.
The reliable overall thread-trimming mechanism in models like the MEB-3200SS/RS for men's and ladies' wear cuts needle threads, looper threads, and gimps, leaving longer threads on the material. This allows the machine to easily retain the thread ends, facilitating subsequent bartacking processes.
A newly developed machine head with a shallow recess is designed for efficient sewing of longitudinal buttonholes. This design provides a wider space under the work clamps, allowing for easier placement and smoother handling of sewing products. The amount of material opened can be easily adjusted using a screw mounted outside the machine head, further enhancing workability.
The adoption of a direct-drive motor connects a compact AC servomotor directly to the hook-driving shaft. This results in quick startup and increased stopping accuracy, guaranteeing outstanding responsiveness. The direct-drive motor also contributes to reduced power consumption by eliminating the need for a V-belt.
The computer-controlled design of the MEB-3200 Series significantly improves maintainability by eliminating most complicated mechanical mechanisms. This simplification reduces the complexity of troubleshooting and repairs.
The machine head is designed to be easily raised, facilitating smoother cleaning and threading operations. This accessibility ensures that routine maintenance tasks can be performed quickly and efficiently.
Improvements in the working environment are also a result of the machine's design. The absence of a clutch mechanism or stop-motion mechanism means the machine produces no stop-motion noise, contributing to a quieter workspace. Additionally, the machine automatically reclaims cloth chips after cutting, keeping the working environment cleaner and reducing the need for manual cleanup.
General| Sewing Machine Series | MEB |
|---|---|
| Lubrication | Automatic |
| Lubricating Oil | JUKI Original Oil or Equivalent |
| Air Pressure | 0.5MPa |
| Stitch Length | 1.0 - 4.0 mm |
| Overlock Width | 2.5～3.5mm |
