MACHINE NAME:9 PINCERS COMPUTER MEMORY CONTROL AUTOMATIC SERVO CEMENTING TOE LASTING MACHINE 

MODEL NO: TH-777MA

BRAND: TENGHONG   

FEATURES

• ^{Fully oil pressure operation system, the machine is more stable when it is working.}
  
• ^{The PLC system with the graphic display touch screen make the machine operation stable and simple.}
• ^{Set parameters (stroke and time) by entering numbers, and set key switch to prevent the changing by non-authorized.}
• ^{The PLC controller can memorize 500 groups of shoe lasting parameter data and location of pincers, and it has the function of adjusting claw plate quickly.}
• ^{Error diagnostic function and save troubleshooting time.}
• ^{The position adjustment of the claw plate adopts electric control, with the double point quick adjustment design, so that the claw plate can be opened to the left and right.}
• ^{The middle pincer can make 15 degrees deflection to the left and right, the yaw angle is also displayed on the touch screen.}
• ^{The max angle of connection between the middle pincer and the left and right two pincers is 20 degrees.}
• ^{The fifth pincer can be set automatic rotation action to make the inner waist last of the best effect.}
• ^{The pincer can be set to automatic pull-down stroke independently or manually operated lifting, allowing the tension of the vamp to be balanced to correct the optimal position of the lasting.}
• ^{After the pincer holds the vamp, the release and clamping of the pincers can be controlled manually.}
• ^{The pressure can be set relief action at the second rise of the inner support table.}
• ^{The height of the inner support table is adjusted by the outside and is displayed on the touch screen.}
• ^{The inner support table rise can be set as a two-stage action with the heel top seat action to prevent the last slide.}
• ^{The glue tray can be used in two-stage structure, it can adjust the width rapidly, and also do the automatic change of the left and right feet inside and outside the waist to achieve the 'best sticking point.}
• ^{The distance of front and rear positions of the inner support platform can be up to16mm, it can be adjusted by the hand wheel.}
• ^{The press head mechanism adopts adjustable two-stage pressure, and it can be set to constant pressure control or positioning control during the first pressure.}
• ^{The latest design of the large seat of the sweep knife descending position adjustment electrically.}
• ^{The forward motion of the wiper mechanism adopts double speed adjustments.}
• ^{Standard equipment: Auxiliary sweep knife mechanism, auxiliary blank holding mechanism and toe cross light structure.}

TECHNICAL PARAMETER

1. Pincers                   : 9
2. Capacity                 : 1440 pairs/8H
3. Power                     : 3HP
4. Net weight              : 1400kg
5. Oil pressure            : 50kg/cm2
6. Heating Power         : 2kw 
7. Oil Filling                : 115 liters 
8. Gross weight           : Be provided before shipment. 
9. Dimension               : 1750(L)x980(W)x1950mm(H)
10. Packing size            : 1860(L)x1030(W)x2160mm(H)

The TH-777MA 9 Pincers Computer Memory Control Automatic Servo Cementing Toe Lasting Machine represents a pinnacle in modern shoe manufacturing technology, designed for precision, reliability, and efficiency. Integrating advanced oil pressure operation, a state-of-the-art PLC system with a graphic display touch screen, and automated control features, this machine elevates shoe-lasting processes to an unprecedented level of quality and productivity. Specifically engineered for medium to large-scale shoe production, the TH-777MA features 9 pincers for optimal gripping and lasting control, and is equipped with sophisticated servo control mechanisms and computer memory technology to streamline repetitive tasks and ensure consistency across production batches. Whether manufacturing athletic shoes, casual footwear, or formal designs, this machine’s innovative design allows for adaptable, efficient, and highly automated lasting processes that meet the demands of modern footwear manufacturers.

Key Features and Functional Advantages

Fully Oil Pressure Operation System

At the core of the TH-777MA is a fully oil-pressure-based operational system. Unlike pneumatic or purely mechanical systems, oil pressure provides a smoother, more stable, and powerful operation, ensuring consistent performance even under heavy-duty industrial workloads.

• Stability and Durability: The hydraulic system dampens vibrations and mechanical shocks during lasting, reducing wear and tear on machine components.

• Consistent Force Application: Oil pressure enables precise control of forces applied during lasting, essential for high-quality cementing and shaping of shoe uppers.

• Enhanced Safety: Hydraulic pressure systems are inherently safer and allow for controlled machine stops and gradual force release, protecting both operators and materials.

Advanced PLC System with Graphic Display Touch Screen

A major highlight of the TH-777MA is its Programmable Logic Controller (PLC) system combined with a graphic display touch screen interface. This modern control system makes the machine operation intuitive, stable, and highly customizable.

• User-Friendly Interface: The touch screen displays real-time data and graphical representations of machine status, making it easy to monitor and adjust.

• Parameter Input via Numeric Entry: Stroke length, time settings, and other operational parameters are set precisely by entering numbers, reducing errors and improving repeatability.

• Key Switch Security: To prevent unauthorized parameter changes, a physical key switch locks settings, ensuring production consistency and preventing accidental modifications.

• Memory Storage: The PLC can memorize up to 500 groups of shoe-lasting parameters, including pincers’ positions and motion sequences. This capability allows quick setup for different shoe styles and sizes, significantly reducing changeover time.

• Quick Adjustment Functions: Operators can rapidly adjust claw plate settings via the PLC, optimizing machine setup for new shoe lasts without downtime.

Sophisticated Pincer and Claw Plate Control

The machine incorporates advanced control over the pincers and claw plates, which are critical for gripping and shaping the shoe upper and sole assembly.

• Electric Position Adjustment: The claw plates’ positions can be adjusted electrically, featuring a double-point quick adjustment system. This allows the claw plates to open both left and right efficiently to accommodate various shoe widths and styles.

• Middle Pincer Deflection: The middle pincer can deflect up to 15 degrees to either side, and the yaw angle is displayed on the touch screen for precise monitoring.

• Maximum Connection Angle: The connection between the middle pincer and the left and right pincers can flex up to 20 degrees, allowing for better fitting and adjustment to complex shoe shapes.

• Automatic Rotation of the Fifth Pincer: The fifth pincer features an automatic rotation action designed to achieve the best inner waist lasting effect, improving shoe fit and comfort.

• Independent Pull-Down Stroke Control: Pincers can be set for automatic pull-down stroke or manual lifting operation, which balances vamp tension to the optimal lasting position.

• Manual Control Option: Once the pincers hold the vamp, operators can manually release or clamp the pincers, offering flexibility for adjustments or special materials.

Precision Inner Support Table Mechanism

The inner support table is essential in supporting the shoe last during the cementing and lasting process. The TH-777MA offers highly advanced control over this component.

• Pressure Relief Setting: Pressure relief can be set at the second rise stage of the inner support table, reducing stress on delicate shoe components.

• Height Adjustment and Display: The height of the inner support table is adjustable from outside the machine, and the current height is displayed on the touch screen for accurate control.

• Two-Stage Rise Action: The inner support table can rise in two stages, coordinated with the heel top seat action, which prevents the shoe last from sliding during the process.

• Enhanced Shoe Stability: This two-stage lift and pressure relief combination ensures the shoe remains perfectly stable during lasting, preventing defects.

Innovative Press Head and Sweep Knife Mechanisms

Efficient and precise application of pressure and glue is vital for high-quality lasting. The TH-777MA’s press head and sweep knife are engineered to meet these demands.

• Two-Stage Adjustable Pressure: The press head’s pressure is adjustable in two stages and can operate under constant pressure control or positioning control during the initial pressure phase.

• Electric Adjustment for Sweep Knife: The large seat of the sweep knife’s descending position can be adjusted electrically, enabling rapid and precise positioning.

• Double Speed Forward Motion: The wiper mechanism’s forward motion supports double-speed adjustment to adapt to different materials and production speeds.

• Standard Auxiliary Equipment: The machine comes standard with an auxiliary sweep knife mechanism, an auxiliary blank holding mechanism, and a toe cross light structure, enhancing the lasting precision and production consistency.

Glue Tray with Two-Stage Structure and Rapid Adjustment

The glue tray on the TH-777MA is designed for flexibility and efficiency.

• Two-Stage Structure: This design allows for stable glue application while adapting quickly to different shoe styles.

• Rapid Width Adjustment: The tray width can be rapidly adjusted to fit various shoe sizes.

• Automatic Left-Right Feet Switching: The system automatically changes glue application positions between the left and right feet, ensuring consistent sticking points for both shoes of a pair.

Adjustable Positioning and Fine-Tuning Features

Fine-tuning is crucial for shoe-lasting machines to accommodate different shoe lasts and designs.

• Hand Wheel Adjustment: The front and rear positions of the inner support platform can be adjusted up to 16 mm using a hand wheel, allowing precise control over shoe positioning.

• Parameter Memory and Recall: Operators can store and recall adjustments for multiple shoe models, speeding up setup for batch production.

Technical Specifications

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Detailed Operation Process

Initialization and Parameter Setup

Before the operation, the user sets the lasting parameters through the touch screen interface. Stroke lengths, lasting time, pressure settings, and pincer positions are entered numerically and saved into the PLC memory. This eliminates guesswork and guarantees precision for every shoe style.

Pincer Control and Adjustments

The 9 pincers play a vital role in holding the shoe vamp and upper in position. The middle pincer’s ability to deflect and rotate ensures that lasting conforms closely to the last’s shape, even with complex curves. Electric position adjustment and rapid claw plate movement facilitate quick switching between shoe sizes.

Last Holding and Vamp Tensioning

Once the vamp is held by the pincers, the machine balances the vamp tension using independent automatic or manual control for the pincers’ pull-down stroke. This ensures uniform tension without stretching or damage.

Inner Support Table and Heel Seat Action

The inner support table lifts in two stages to secure the shoe last in place. Combined with the heel top seat action, this prevents last slippage and improves lasting accuracy.

Glue Application and Cementing

The glue tray’s two-stage mechanism, rapid width adjustment, and automatic switching between foot positions ensure consistent glue application. The press head’s two-stage pressure control optimizes glue bonding without damaging the materials.

Sweep Knife and Wiper Motion

The auxiliary sweep knife and wiper mechanisms provide precise trimming and cleaning actions during lasting. The electric adjustment and double-speed forward motion improve process efficiency and finish quality.

Benefits for Manufacturers

• Improved Productivity: Capable of lasting up to 1440 pairs per 8-hour shift, the TH-777MA significantly increases production throughput.

• Consistent Quality: Computer memory control guarantees repeatable results, reducing scrap and rework.

• Reduced Setup Time: Storing up to 500 parameter groups enables fast changeovers between different shoe models.

• Ease of Use: The graphical touch interface simplifies operation and reduces operator training time.

• Enhanced Flexibility: Adjustable pincers and support mechanisms accommodate a wide variety of shoe designs.

• Minimized Downtime: Error diagnostic functions save troubleshooting time, keeping the production line running smoothly.

Comparison with the TH-777 Model

While the TH-777 model shares many features with the TH-777MA, such as the fully oil pressure system, PLC touch screen control, and adjustable pincers, the TH-777MA introduces:

• Servo-controlled automatic cementing technology for higher precision.

• Advanced computer memory control with a larger capacity for parameter storage.

• Enhanced electric adjustment capabilities for faster, more accurate setup.

• Additional automation features for better consistency and operator convenience.

Maintenance and Support

The TH-777MA is engineered for low maintenance with robust components designed to withstand industrial usage. The oil pressure system includes a 136-liter oil tank, ensuring continuous, smooth operation with minimal refill frequency. The machine’s error diagnostic system identifies faults quickly, guiding operators through troubleshooting steps displayed on the touch screen. Routine maintenance includes oil changes, lubrication of moving parts, and periodic checks of electrical components.

The TH-777MA 9 Pincers Computer Memory Control Automatic Servo Cementing Toe Lasting Machine is an essential investment for footwear manufacturers seeking to enhance their lasting processes with precision, speed, and reliability. Its combination of hydraulic stability, intelligent PLC control, advanced pincer mechanics, and flexible automation delivers superior shoe lasting quality while boosting factory productivity. Whether for midsized or large-scale production, the TH-777MA provides a future-proof solution that keeps pace with evolving shoe manufacturing demands, supporting both traditional and innovative footwear designs