Overview

This procedure explains how to troubleshoot poor or inconsistent twisting at Station 6.

The video demonstrates a common failure where the grippers do not apply enough pressure. Instead of being held securely while the twisting mechanism rotates, the pre-roll spins inside the grippers and little or no twist is produced.

The objective is to hold the pre-roll securely enough to create the twist while still allowing enough vertical movement to relieve tension on the paper.

Check Whether the Pre-Roll Spins in the Grippers

Start by observing the pre-roll during a twisting cycle.

The pre-roll itself should remain securely held while the twisting mechanism performs its rotation.

If the grippers are too loose, the pre-roll will begin to spin inside the grippers instead of allowing the top paper to twist.

Adjust the Gripper Pressure

Use the mechanical gripper adjustment to increase the holding pressure.

The objective is not to make the grippers as tight as possible.

They need enough pressure to prevent the pre-roll from rotating inside the grippers, but not so much pressure that the paper or pre-roll becomes deformed.

Make a small adjustment, then test the station again.

Lock the Gripper Adjustment

Once the desired gripper pressure has been established, lock the mechanical adjustment securely in place.

Run another trial using the same pre-roll if appropriate.

In the video, correcting the gripper pressure results in a proper twist without tearing or ripping the paper.

Inspect the Finished Twist

After correcting the gripper pressure, inspect the top of the finished pre-roll.

If the twist is being created correctly but there is still excessive paper remaining at the top, inspect the up-stroke adjustment.

The up-stroke affects how the twisting assembly moves vertically as the paper becomes tighter.

Understand the Purpose of the Up-Stroke

As the paper twists, it becomes progressively tighter.

If the twisting mechanism remains at a completely fixed height, this tightening can create excessive tension on the paper.

The up-stroke allows the mechanism to rise slightly during twisting.

Without enough relief, the paper can rip or tear during the twisting process.

Adjust the Up-Stroke

Adjust the up-stroke when additional movement is required to relieve tension during twisting.

Make small changes and perform another test after each adjustment.

The objective is to provide enough upward movement to protect the paper without moving the twisting assembly outside its safe operating range.

Avoid Contact With the O-Rings

When increasing the up-stroke, carefully inspect the upper travel of the twisting assembly.

This is an important mechanical limit to verify after adjusting the stroke.

Do Not Set the Stroke Too Low

The opposite condition can also create problems.

If the twisting assembly is positioned too low, it can interfere with other parts of the station and prevent the grippers from closing correctly.

Check both the upper and lower travel after making a stroke adjustment.

Run Another Test Cycle

After adjusting the gripper pressure or up-stroke, run another controlled twisting cycle.

Watch the pre-roll throughout the complete movement.

• The pre-roll remains stationary inside the grippers.
• The grippers do not deform the pre-roll.
• The top paper twists consistently.
• The mechanism rises enough to relieve tension.
• The paper does not tear.
• The rotating assembly does not contact the O-rings.
• The grippers can open and close normally.

Optional New Twisting Station Upgrade

The video also discusses the newer twisting station used on the V6.

According to the discussion, the newer design eliminates several of the mechanical adjustments used on this Station 6 configuration and also eliminates the O-rings by using metal grippers.

The video states that this newer twisting station can be installed on V4 and V5 machines.