Side guides and conveyor timing
Suitable where containers are stable and can be presented with controlled gaps. Guide adjustment, transfer plates and sensor position determine repeatability.
Liquid filling machinery guidance
Treat container handling as part of the filling process, not a conveyor afterthought.
A dosing system can be accurate while the line remains unreliable because bottles arrive tilted, spaced inconsistently or outside the nozzle target. Test real production containers and their normal variation.
Start with a production pack set
Nominal dimensions do not describe how a container behaves on a line.
Container evidence should reflect the range the machine will actually receive.
Supply samples from normal production, including known variation in base flatness, wall stiffness, neck position, mould seam, decoration and closure fit. Lightweight plastic bottles may change shape when squeezed by guides; tall glass bottles may be stable at rest but vulnerable at transfer gaps; small containers may need close pitch control and a narrow nozzle target.
The container’s centre of gravity changes during filling. A pack that is stable when empty can become difficult during acceleration, deceleration or accumulation. Product splash and foam can also be created by movement after the fill, so outfeed handling matters as much as infeed presentation.
Container data for the layout
Record the geometry and behaviour that affect transfer.
The trial pack set should be identified and retained for future reference.
| Container feature | Why it matters | Trial evidence |
|---|---|---|
| Base and footprint | Controls stability, guide contact and ability to cross transfer plates. | Empty and filled pack at starts, stops and accumulation. |
| Overall height and centre of gravity | Influences tipping risk, top restraint and acceleration limits. | Tallest and least stable pack at normal line speed. |
| Body width and shape | Determines side-guide contact, lane width and changeover range. | Minimum and maximum body profile, including handles or tapers. |
| Neck position and opening | Sets nozzle target, vertical clearance and permissible pack movement. | Actual neck variation beneath every filling head. |
| Material and stiffness | Affects sensor detection, guide pressure and deformation. | Transparent, reflective, flexible or dark packs tested with the proposed sensors. |
| Surface and decoration | Labels, sleeves, embossing and coatings can catch or mark at guides. | Decorated production samples, not undecorated prototypes only. |
| Closure and post-fill condition | Cap placement, headspace, slosh and wet neck can affect downstream handling. | Complete filled pack through capping, labelling or packing where included. |
Choose the handling method
Different layouts control spacing and position in different ways.
Select the least complex method that controls the required pack range reliably.
Stop gate or indexing pins
Containers queue against a controlled stop before filling. Check contact forces, rebound, double entry and release after a fault.
Timing screw or pitch control
A screw can establish regular spacing for suitable containers. Format-specific geometry, change parts and safe access must be considered.
Starwheel or pocket handling
Positive pockets can locate less stable packs or support integrated rotary/monoblock processes. Change-part identification and transfer timing are critical.
Puck handling
A carrier can stabilise small, shaped or flexible containers. Puck return, orientation, cleaning and line capacity become additional system requirements.
Manual presentation
Semi-automatic operation can avoid complex conveying but transfers positioning responsibility to the operator. Fixtures should make correct placement repeatable and safe.
Test transitions and recovery
Most handling faults appear between machine functions.
Recovery behaviour is part of sustainable output.
| Test condition | What to observe | Acceptance question |
|---|---|---|
| Normal infeed | Gaps, guide contact, sensor detection and queue pressure. | Do containers arrive at the filling position without manual correction? |
| Start and stop | Rebound, tipping, double indexing and retained packs. | Can the line stop and restart without a double fill or missed pack? |
| Low and high accumulation | Back pressure, side loading and pack damage. | Does accumulation remain stable across the intended range? |
| Transfer to capping or labelling | Dead-plate crossing, product slosh and neck condition. | Does the filled pack remain controlled and suitable for the next process? |
| Format change | Guide positions, change parts, recipes and sensor settings. | Can the intended changeover be completed and independently checked? |
| Fault recovery | Removal of a bad pack, line clearance and controlled restart. | Can operators recover without entering hazards or losing pack sequence? |
Container-handling questions
Buyer questions before approving the conveyor and indexing layout.
A container matrix prevents one easy format from representing the whole project.
How many container samples should be supplied?
Supply enough to run repeated starts, stops and transfers, including normal manufacturing variation. A handful of selected samples may prove fit but not stable production handling.
Can one filler handle many bottle shapes?
Often, but the required guide range, nozzles, sensors, recipes and change parts depend on how different the packs are. A format matrix should identify shared and dedicated parts.
Why do transparent bottles cause sensor problems?
Some sensing methods respond differently to clear, reflective, dark or translucent materials. The proposed sensor and mounting should be tested on the actual decorated pack.
What causes bottles to tip after filling?
Higher centre of gravity, rapid acceleration, transfer gaps, narrow bases, product slosh, guide changes and queue pressure can contribute. Test both empty and filled conditions.
Should closures be included in the handling trial?
Yes where capping, neck condition or downstream stability are part of the scope. The complete pack can behave differently from the open container.
Continue the specification
Related liquid filling machine guides.
Prepare a useful enquiry
Send production containers, not only dimensions.
Include samples from normal manufacture, drawings where available, the fill range, closure, line direction and downstream process so Lancing can review stable presentation and changeover needs.