Overview

This procedure covers the main adjustments to check when Station 4 produces creases, loose areas, poor filling, or inconsistent pre-rolls.

Several different conditions can create similar filling problems, so the station should be checked methodically rather than changing multiple parameters at once.

The objective is to identify the source of the problem while preserving consistent product flow, compaction and cycle time.

Re-Teach the Shaker and Needle First

When creases or poor compaction appear, begin by checking the basic Station 4 setup.

The first recommendation is to re-teach the shaker and needle positions.

An incorrectly taught needle or shaker position can affect how the product is distributed and compacted inside the paper.

After re-teaching both positions, run another test before changing additional parameters. This establishes a known mechanical starting point for the rest of the troubleshooting process.

Adjust the Delay Before Sequence Start

If the shaker and needle positions are correct but the problem remains, the product may not have enough time to reach the bottom of the pre-roll before the compaction sequence begins.

Adjust the Delay Before Sequence Start gradually.

Increase the delay in increments of approximately 50 milliseconds and test the result after each change.

Do not make a large change immediately. If increasing the delay makes the filling worse, return the parameter to its original value and investigate another part of the process.

Check Product Flow Through the Filling Chute

Good product flow is essential before making more advanced adjustments.

Inspect the filling chute and funnel while the machine is operating.

Product should travel through the chute smoothly without accumulating or creating a blockage.

A partially plugged funnel or chute can prevent enough material from reaching the bottom of the cone and create inconsistent filling.

Check the Funnel and Filling Chute Position

If material is entering the chute in a large clump instead of spreading evenly, the physical position of the filling components may need adjustment.

The funnel angle and filling chute position are possible adjustments.

Bringing the assembly slightly closer or changing its angle can help distribute the product more evenly before it enters the cone.

The objective is to avoid having a large quantity of product fall into one area at once.

Adjust the Vibrator Speed

Vibrator speed directly affects how quickly product travels through the filling chute.

If product enters too aggressively, reduce the vibrator speed so the material moves more gradually and has time to distribute through the chute.

Reducing the vibrator speed also means product may take longer to completely leave the chute. For this reason, vibrator speed and sequence timing must be adjusted together.

Make Sure the Chute Empties Completely

The filling chute should be substantially empty before the machine begins the next cycle.

If product remains behind, it can accumulate and then fall into the following cone when the next cup is discharged.

This can create inconsistent weights and filling from one pre-roll to the next.

When testing an adjustment, watch the chute at the end of the filling sequence and verify that product is not continuously building up.

Match Needle Speed to Product Flow

The needle movement and product flow need to work together.

If the needle operates too slowly while product enters the chute too quickly, material can accumulate faster than the needle can work it into the cone.

This can plug the chute and produce poor filling.

Adjust the needle speed according to how quickly the product is entering the cone. The objective is to maintain a controlled flow where the needle can work the incoming material without allowing product to build up above it.

Adjust the Delay After the Needle Sequence

If a small amount of product remains in the chute after the final needle movement, use the Delay After Sequence parameter.

This delay gives the remaining product additional time to fall into the cone before it moves to the next station.

Add approximately 50 milliseconds at a time while observing the result.

The delay can be increased up to approximately 500 milliseconds according to the procedure shown.

Add Another Needle Sequence if Necessary

If the delay reaches approximately 500 milliseconds and product is still remaining in the chute, another needle sequence may be required.

Adding another needle sequence gives the machine another opportunity to work the remaining material into the cone.

Additional needle sequence = longer cycle time.

Adding another sequence will reduce overall machine production speed.

If another needle sequence resolves the problem, the additional delay may no longer be necessary and can potentially be returned toward zero. Test the machine again after making the change.

Adjust Air Flow if Product Still Falls Behind

If only a small amount of product remains in the chute, increasing the air flow slightly may help move the remaining material through the chute faster.

Make small adjustments and observe how the product responds.

The objective is to improve product movement without creating an uncontrolled flow into the cone.

Verify the Cone Holder and Paper Combination

Mechanical compatibility between the paper and cone holder is also important.

Make sure the correct cone holder is being used with the correct paper format.

Different paper brands or formats may have slightly different dimensions.

If the paper is too small for the holder, it can move excessively during shaking. This loose fit can create creases and poor filling.

The paper should fit properly inside the holder without excessive clearance.

Check the Shaker Adjustment

If the paper and cone holder are correct, evaluate the shaker settings.

A shaker that operates too aggressively can negatively affect the filling process.

Reduce the shaker intensity and work upward gradually rather than immediately using a high setting.

The technician mentions using a Shaker Stroke around -1 as a preferred starting point rather than the automatically generated value around -2 for the demonstrated setup.

He also describes starting the shaker around 600 and increasing gradually as needed.

These values are troubleshooting reference points for the demonstrated configuration, not universal settings for every product.

Consider Product Characteristics

Product characteristics can significantly change the filling behavior of Station 4.

A setup that produces good pre-rolls with one product may require adjustment when a different product is introduced.

Pay particular attention to changes in particle size, coarseness, dryness, flow behavior and product consistency.

Coarse or dry material may react differently to vibration and needle compaction than a finer or more consistent product.

When changing products, expect that the needle and shaker parameters may need to be fine-tuned again.