Jimkhaas Extrusions

A Haul-Off Machine is a critical component used in plastic extrusion lines, especially for the continuous production of pipes, profiles, tubes, and cables. Its primary function is to pull (or "haul off") the extruded product from the die head and maintain a consistent speed and tension to ensure dimensional accuracy and surface quality.

�� Key Functions:

• Pulls extruded material through the line after it exits the calibration and cooling systems.

• Maintains consistent pulling force and speed to prevent stretching or deformation.

• Synchronizes with the extrusion line to ensure uniform product thickness and size.

• Works in coordination with cutting or winding units downstream.

⚙️ Main Components:

1. Caterpillar Belts or Rubber Pads – Twin belts (upper and lower) grip and pull the product.

2. Drive Motor – Usually equipped with a variable frequency drive (VFD) for speed control.

3. Control Panel – Allows operators to set and monitor speed, pressure, and synchronization.

4. Pressure Adjustment System – Ensures firm but safe contact with the extrudate.

5. Frame & Guiding Rollers – Provides support and alignment for smooth operation.

�� Common Applications:

• PVC, HDPE, and PPR pipe extrusion

• Profile extrusion (window/door frames, cable ducts)

• Flexible and rigid tube production

• Cable and wire coating lines

A Jimkhaas Extrusions Haul-Off Caterpillar (also known as a caterpillar haul-off unit) is an essential downstream machine in plastic pipe, profile, and cable extrusion lines. It is designed to continuously pull the extruded product (such as PVC, HDPE pipes or profiles) from the die head at a controlled speed, ensuring smooth movement and accurate sizing before cutting or coiling.

🔧 Key Features & Description:

1. Structure:

   • Comprises two or more endless rubber or PU caterpillar belts or pads.

   • Mounted on synchronized upper and lower tracks that grip the product from top and bottom.

2. Drive System:

   • Powered by servo motor or AC motor with frequency inverter.

   • Ensures precise and adjustable pulling speed.

3. Clamping Mechanism:

   • Pneumatic or mechanical system to adjust the belt pressure to suit pipe size and wall thickness.

   • Provides consistent grip without damaging the surface.

4. Speed Synchronization:

   • Fully synchronized with the extrusion line speed.

   • Ensures uniform product dimensions and prevents deformation or elongation.

5. Control Panel:

   • Features digital speed display, forward/reverse control, and emergency stop.

   • Often includes PLC or touch screen HMI in advanced models.

6. Material Compatibility:

   • Suitable for PVC, HDPE, PPR, PE, PP pipes, and various profiles.

   • Adjustable to accommodate different diameters and shapes.

7. Optional Features:

   • Vacuum exhaust for heat management.

   • Soundproof enclosures for noise reduction.

   • Length counter integration for downstream cutting coordination.

✅ Applications:

• PVC / HDPE / PPR Pipe Extrusion Lines

• Cable and Wire Production Lines

• Plastic Profile Extrusion (e.g., window profiles, trunking, etc.)