How to Choose Two, Four, or Six Weighing Heads for a Pyramid Tea Bag Packing Machine

Ask What Each Head Actually Feeds

The YS-ZF90 product information lists two-, four-, and six-head electronic weighing arrangements. This gives a buyer specific alternatives to discuss, but the number does not explain their operation. Several heads might handle the same premixed material. An alternative proposal might assign separately supplied ingredients to different channels. That distinction must be shown in the supplier's configuration drawing.

Request a simple allocation diagram beginning at the material containers and ending at the bag inlet. Label each head, its material source, its discharge destination, and any point where streams join. Ask whether the controller weighs complete portions, combines selected discharges, or uses another stated sequence. These are questions about the offer, not assumptions about the listed model.

Bring the proposed diagram to the sample demonstration. Match the visible feed routes to the drawing and ask which installed components support each claimed function. A product photograph with an enclosed upper cabinet cannot establish the head count or show that ingredient paths remain independent.

Compare the Offered Head Counts Against the Recipe

Use the same tea specification when reviewing the three alternatives. A comparison between an easy single tea on one arrangement and a difficult blend on another does not isolate the effect of the architecture. Ask the supplier to complete the following allocation questions for the actual offered equipment.

No row establishes a preferred head count in advance. A satisfactory two-head trial may meet the requirement, while a six-head quotation can still leave an important ingredient uncontrolled. The purchasing question is what problem the extra heads demonstrably solve.

Include an unavailable head in the configuration discussion. Ask whether the offered controls permit any reduced-head operation, which recipes would remain valid, and what must be checked before resuming. Do not assume that a six-head arrangement can simply become a four-head arrangement during maintenance. If reassignment is proposed, the supplier needs to explain how it preserves the required material contributions and timing. Otherwise, record the affected arrangement as unavailable until its specified operating condition is restored.

Follow a Premixed Blend Through Its Shared Supply

If all heads receive the same premix, control of the blend begins before weighing. Heads supplied from one mixed stream cannot independently correct a shortage of a component that has already separated upstream. They may deliver the requested total mass while the proportions inside successive bags drift.

Examine how the mixture changes as it leaves its container. Larger leaves, lighter petals, and denser pieces may move differently. Compare material near the beginning and end of a container, and sample the feed reaching different heads where access and the supplier's procedure permit. The aim is to determine whether the offered supply route presents comparable material to every weighing channel.

When samples differ, record the location of the change before altering head settings. Adjusting discharge targets may change total dose without restoring the blend. The response could involve preparation or supply of the premix, but that belongs in a documented material-handling proposal rather than an unsupported promise that more heads prevent separation.

Prove Separate Ingredient Paths Before Promising Ratios

A buyer who needs deliberate ingredient allocation should request more detail than a list of heads. The supplier must identify separate material supplies, controllable delivery paths, the proposed per-ingredient targets, and the sequence that brings those contributions together. A shared upstream hopper can change the meaning of an apparently independent set of weighing channels.

Ask how the controller responds when one ingredient is unavailable or fails to deliver its required contribution. The important result is the composition of the affected bag and how that bag is handled. Do not assume an automatic stop, rejection, or recipe correction unless the quotation includes it and the demonstration verifies its behavior.

Keep the head-to-ingredient assignment in the recipe approval record. If a recipe uses fewer ingredients than available heads, identify whether spare channels are inactive, share an ingredient, or have another defined purpose. Those arrangements can have different replenishment and cleaning requirements even when the final portion target is unchanged.

Test the Smallest Recipe Component on Its Own Terms

A small inclusion can be difficult to judge from the total bag weight. The base tea may account for most of the portion, allowing an incorrect amount of a minor ingredient to be masked by variation elsewhere. Establish a separate acceptance method for that component before deciding that the complete blend is consistent.

For ingredients that can be reliably separated and identified, a controlled sample examination may help estimate their individual contribution. Similar fragments or powders can make that method unsuitable. In that case, agree another application-specific measurement with the supplier and the buyer's quality team; photographs of an attractive mixture are insufficient to establish a numeric ratio.

Run the smallest intended inclusion and the most demanding approved blend, not just an equal-proportion demonstration. Compare individual bags and the spread of their results rather than relying only on a combined sample. Any guaranteed composition tolerance must come from an agreed measurement method and demonstrated data, not from the number of heads in a brochure.

This connected equipment and pack illustration provides tea-line context, not proof of installed weighing-head count or ingredient-ratio control.

Connect Head Discharge to One Bag-Filling Window

Trace what happens after weighing. Ingredients may be weighed correctly yet arrive at the common outlet at different times. A leaf caught in a chute or a slow final contribution can change which bag receives it. The trial should follow the material into the intended bag, rather than ending the assessment at a displayed scale result.

Ask the supplier to relate the proposed head discharge sequence to the available filling window. Observe the final fragments and any material remaining between cycles. Keep late arrivals separate from weighing errors in the results, because their remedies may involve the discharge path or timing instead of a new weighing target.

Inspect finished bags after this observation, including tea near the closing area. An arrangement that achieves the intended dose only by pushing material into the next operation still has an unresolved interface. Compare accepted bags at the discharge using the same attachments and format for each proposed head arrangement.

Use Refill Events to Expose Unequal Head Behavior

The allocation drawing becomes especially useful when material levels change. Separately supplied ingredients may empty at different times because the recipe consumes different quantities. Heads sharing one blend may receive uneven replenishment. Ask the supplier to demonstrate the replenishment conditions expected during a normal commercial campaign.

Keep samples associated with the particular head or ingredient affected by the refill whenever the system allows that connection. Record interruptions, delayed discharges, temporary changes, and the first completed portions afterwards. A single average from the entire trial can conceal a short interval in which one contribution is missing or inconsistent.

Also review how an operator identifies the correct container and feed path when replenishing the machine. The purchase requirement should connect physical labels, recipe assignments, and permitted adjustments. Extra channels add useful control only when the people running them can preserve their intended allocation through routine production events.

Repeat the relevant checks after a normal pause with tea still in the proposed feed paths. Confirm how residual material is treated and whether the resumed sequence assigns it to the intended portion. This is particularly important when different ingredients remain at different points in the system.

Purchase the Demonstrated Allocation With Its Recipe Records

Finish the comparison with a configuration-specific record for each recipe used in the trial. It should identify the head arrangement, ingredient sources, allocation map, target contributions where applicable, common discharge path, and the method used to assess composition. This makes a successful demonstration reproducible when the line arrives.

Separate demonstrated recipes from future requests. A proposed seasonal blend with a much smaller inclusion or a more fragile ingredient can require a new assessment even when its total portion mass is familiar. Require the supplier to state what remains adjustable within the approved configuration and what would need different hardware or another trial.

Review the pyramid tea bag packing machine options alongside the signed allocation drawing. Select the head count supported by the actual recipe results, then carry that precise arrangement into the purchase scope. Record any unresolved independent-dosing claim explicitly so it cannot be mistaken for an included capability during handover.