The DT 1790 is a direct drive computerized straight buttonhole sewing machine designed for high-speed, high-precision buttonhole production on shirts, suits, uniforms, trousers, workwear, and other woven garments. It combines a fully computerized control system, closed-loop motor technology, a motor-driven cutter, and a built-in direct drive motor to deliver stable performance, low noise, and fast style changeovers.

With the DAHAO control system and touchscreen pattern editing, the DT 1790 eliminates the need for mechanical cams and gears. Operators can adjust buttonhole size, stitch density, and pattern parameters directly on the screen, dramatically reducing downtime during style changes.

Applications

The DT 1790 is suitable for sewing straight buttonholes on a wide range of garments and fabrics, including:

• Shirts – front plackets, cuffs, and collar buttonholes

• Suits and blazers – front buttonholes and sleeve buttonholes

• Uniforms and workwear – standardized buttonholes for mass production

• Trousers and pants – waistband and fly buttonholes

• Jackets and coats – front closure buttonholes

• Woven garments – cotton, poly-cotton, twill, blends, and similar materials

• Light to medium-heavy fabrics – where clean, consistent straight buttonholes are required

It is ideal for factories producing shirts, suits, uniforms, and other garments that require repeatable buttonhole quality and efficient style switching.

Key Features

1. Fully Computerized Control System

The DT 1790 integrates control of feeding, needle sway, upper thread trimmer, bobbin thread trimmer, cutter, and presser foot lifter. This ensures precise coordination and stable performance throughout the sewing process.

• Centralized electronic control

• Consistent buttonhole size and stitch density

• Reduced manual adjustment

• Stable operation at high speed

2. Closed-Loop Motor Technology

The machine is equipped with closed-loop motors for the presser foot lifter and cutter, enabling fast response and real-time control. This improves accuracy while enhancing overall operational stability.

• Fast and precise presser foot lifting

• Accurate cutter positioning

• Real-time feedback control

• Reliable performance during continuous production

3. Upgraded Motor-Driven Cutter

The DT 1790 adopts a motor-driven cutter structure, offering greater stability with significantly lower noise and vibration compared to traditional magnetic drive cutters.

• Clean and accurate buttonhole cutting

• Lower noise and vibration

• Higher cutting stability

• Reduced maintenance compared with magnetic systems

4. Direct Drive Structure

The built-in direct drive motor design achieves a maximum speed of 3600 rpm (unlockable up to 4200 rpm), delivering high-speed performance with energy efficiency and smooth operation.

• No belt transmission

• Faster start/stop response

• Lower energy consumption

• Quieter operation

• Reduced maintenance due to no belt wear

5. Enhanced Durability & Efficiency

The DT 1790 features strengthened thread take-up lever components and an optimized upper and bobbin thread trimming system. Faster automatic presser foot lifting further increases production efficiency and reduces cycle time.

• Longer component life

• Cleaner thread trimming

• Faster cycle times

• Higher daily output

• Reduced operator fatigue

Common Questions

1. What system does the machine use?

The DT 1790 uses the DAHAO system, a well-known and reliable control platform in the industrial sewing machine industry. The DAHAO system provides stable operation, responsive control, and easy parameter adjustment through the touchscreen interface.

2. Do you have other colors?

Yes. The DT 1790 is mainly available in whiteandblue. Other colors may be available depending on order quantity and production configuration. Please confirm with the supplier for current color options.

3. How do you edit the patterns?

You can edit the patterns directly on the touch screen. The DT 1790 can create more patterns than a normal buttonhole machine, giving operators greater flexibility for different buttonhole designs, sizes, and stitch densities.

• Edit directly on the machine

• Store multiple patterns

• Quick recall for different styles

• No mechanical cam changes required

4. What is the biggest advantage of the DT 1790 compared to traditional mechanical buttonhole machines?

The DT 1790 features a direct-drive motor system, which saves energy and responds faster. More importantly, it is fully computerized.

You do not need to change cams or gears to adjust the buttonhole size and pattern. You simply input the data on the touch screen, which drastically reduces downtime during style changes.

Key advantages include:

• Faster style changeover

• Higher energy efficiency

• More consistent buttonhole quality

• Less mechanical maintenance

• Easier operation and programming

DT 1790 Specifications at a Glance

• DT 1790

• direct drive computerized straight buttonhole sewing machine

• DAHAO buttonhole machine

• industrial straight buttonhole machine

• automatic buttonhole sewing machine

• computerized buttonhole machine

• shirt buttonhole sewing machine

• suit buttonhole machine

• motor-driven cutter buttonhole machine

• high-speed buttonhole machine