IV. Jointing Method

The steel‑cord belt incorporates a steel‑wire or steel‑mesh carcass that provides the lateral strength required for material handling. Since all longitudinal tensile forces are borne by the drive cable, the belt is resistant to longitudinal tearing. All belt splices are made using mechanical splice connectors.

Belt buckle joints are mechanical cold‑spliced connectors that secure the two ends of a conveyor belt by means of interlocking metal buckles, which are then fastened with a pin.

I. Preliminary Preparations

1. Tools

Button‑pressing machines (manual, pneumatic, or hydraulic), tape measures, try squares, utility knives, files, matching‑specification steel buttons, pivot pins, angle grinders, and safety protective equipment.

2. Model Selection and Matching

The steel buckle model must match the thickness of the steel cable belt; the overall width of the steel buckle should be 30–50 mm narrower than the belt to prevent abrasion.

3. Belt End Treatment

Release the conveyor tensioning device and pull out both ends of the belt.

Use a square to scribe the line, ensuring that the cut is strictly perpendicular to the belt’s centerline.

Trim approximately 30 mm from the edges of the ear pads on both sides of the headband at a 45° angle.

The burrs on the end adhesive layer have been smoothed, with no blisters or foreign matter.

II. Button-Attaching Procedure (Universal Process for U‑Shaped, Wolf‑Tooth, and Butterfly Buttons)

1. Clamping the steel buckle: Insert the entire row of steel buckles into the lower die of the buckle‑setting machine, secure them with positioning pins, and ensure the buckles are centered. Embedding the belt end: Fully push the belt end into the bottom of the steel buckle slot, ensuring uniform gaps on both sides of the belt to prevent any misalignment.

2. Button‑sewing sequence: center first, then both sides.

3. First, install the steel buckle at the center point of the belt’s width to establish a preliminary position.

4. Reattach the outermost steel buckles on both sides to secure the overall position.

5. Perform the entire steel‑clip stamping process, proceeding sequentially from the center outward to both sides.

6. Stamping and Interlocking: Operate the riveting machine to apply downward pressure; the steel rivet pierces the steel cable strap, and under the action of the bottom die, it automatically bends, tightly clamping both sides of the belt. Inspection: Ensure that the rivets are neither raised nor cracked, and that the belt shows no severe tears.

7. Completion of End-Attachment: Secure the corresponding steel buckles at both ends of the conveyor belt, ensuring that the teeth on the end buckles interlock with one another.

III. Joint Closure

1. Interlock the steel buckles at both ends in a crisscross pattern, aligning the buckle holes.

2. Through-type connecting pin (through rod);

3. Bend and flatten both ends of the pin to prevent it from popping out or falling off during operation.

4. Gently pull the belt to verify that the joint moves smoothly without any binding or jamming.

IV. Inspection and On-Site Operation

1. The joint is straight and even, with no twisting or unilateral warping.

2. The steel buckle has no sharp burrs, preventing damage to the belt and avoiding scratches on the cleaner.

3. Perform a slow jog test run, ensuring there is no deviation and no abnormal knocking or unusual noises.

V. Important Notes

1. Application limitations: Not suitable for conveying sharp materials; prone to snagging steel fasteners.

2. Precautions: The cut must be perpendicular; the steel clamp size should not be too small; and the pin must be securely locked.