For approved cartons, boxes, bags or finished packs within the qualified range, with product spacing and conditioning before the weigh belt.
Machine overview
H M Pharma Machines manufactures the Carton Weight Checker in Ahmedabad, Gujarat, India for pharmaceutical, nutraceutical, cosmetic, food, chemical and allied production applications.
The Carton Weight Checker uses product spacing and conditioning before the weigh belt for pack handling. Its approved process completes when accepted cartons continue; nonconforming cartons are automatically rejected where configured.
Checkweigher selection begins with pack weight and dimensions, conveyor speed, stable spacing and the required tolerance. The approved recipe defines tare, upper/lower limits and reject timing; reference masses or challenge packs support calibration and repeatability checks.
Why this machine
The Carton Weight Checker is intended for approved cartons, boxes, bags or finished packs within the qualified range; performance is assessed against the output and acceptance criteria stated for the approved configuration.
Product spacing and conditioning before the weigh belt.
Recipe, tare, tolerance, calibration, reject and production-data control.
For the Carton Weight Checker, the materials and cleanability review follows this product-contact requirement: Machine construction, contact materials, guarding and inspection surfaces are selected for the approved application and environment.
Pack changeover covers conveyor guides, belt speed, tare and tolerance recipe, product spacing and reject timing for the approved carton.
Accepted cartons continue; nonconforming cartons are automatically rejected where configured.
Operating process
The carton weight checker isolates each moving carton, measures it dynamically and compares the result with the limits stored in the selected product recipe.
The infeed conveyor separates consecutive cartons so only one approved pack occupies the weigh section at a time.
The weigh conveyor carries the carton across the load-cell platform while the controller captures a stable dynamic weight value.
The measured weight is evaluated against the selected upper and lower acceptance limits and classified as conforming or nonconforming.
Accepted cartons continue downstream; where an automatic reject device is included, nonconforming cartons are diverted from the production flow.
Applications & selection
Pharmaceutical cartons are dynamically weighed against the approved recipe limits to identify packs whose total weight falls outside the acceptance band.
Nutraceutical packs can be screened for weight deviations that may indicate a missing, extra or incorrect component within the tested pack format.
Cosmetic and personal-care cartons are checked after pack stability, conveyor spacing and the minimum detectable weight difference are established.
Food and beverage cartons can be classified by dynamic weight when the product motion and pack variation allow reliable measurement at line speed.
For quality inspection, accepted and rejected weight limits, challenge samples and reject confirmation are defined in the approved test protocol.
An existing line can add the checkweigher after conveyor levels, pack gaps, reject space, guarding and upstream or downstream signals are reviewed.
Technical details
| Machine | Carton Weight Checker |
|---|---|
| Category | Special Packaging Systems |
| Suitable For | Approved cartons, boxes, bags or finished packs within the qualified range |
| Working Principle | An infeed belt spaces cartons, a dynamic weigh conveyor measures each pack and the controller passes or rejects it against the selected recipe. |
| Infeed / Handling | Product spacing and conditioning before the weigh belt |
| Outfeed / Transfer | Accepted cartons continue; nonconforming cartons are automatically rejected where configured |
| Machine Construction | GMP-oriented stainless-steel construction as defined in the approved scope |
|---|---|
| Contact Materials | Machine construction, contact materials, guarding and inspection surfaces are selected for the approved application and environment. |
| Control System | Recipe, tare, tolerance, calibration, reject and production-data control |
| Changeover | Settings, guides and format parts matched to approved samples or drawings |
| Optional Scope | Load-cell or EMFR weighing, reject type, verification sensors, reports and line handshake are configurable. |
| Line Integration | Standalone supply or integration with approved upstream and downstream machines |
| Weighing arrangement | Dynamic carton or pack checkweigher; the quotation identifies the weighing technology, conveyors and any ordered reject device. |
|---|---|
| Pack and weight range | Approve pack length, width, height, gross-weight range, stability and conveyor height using actual cartons or finished packs. |
| Recipe and limits | Define nominal pack weight, tare basis and upper and lower acceptance limits for each product recipe. |
| Output assessment | Agree packs per minute from pack length, separation, belt speed, weighing time and the selected reject cycle. |
| Weighing tolerance and FAT | Agree dynamic tolerance and repeatability using reference masses or challenge packs at stated belt speed, spacing and product conditions. |
| Reject verification | Where rejection is ordered, test underweight and overweight challenge packs, diversion and the specified confirmation signals. |
| Electrical supply | The load list states voltage, phase, frequency and connected load for the weigh controller, conveyors and fitted devices. |
| Pneumatic and data services | Specify compressed air for a fitted pneumatic reject, production-data connections and upstream/downstream line signals. |
| Pack changeover | Record belt and guide settings, recipe limits, tare and calibration checks for each approved pack. |
| Footprint and shipping | The GA drawing defines conveyor lengths, height, reject space and weighing access; the packing list states net and packed weights. |
| Warranty | Duration, commencement, component coverage, exclusions and claim terms are defined in the quotation or order. |
| Installation and commissioning | Define positioning, conveyor alignment, calibration, challenge-pack trials and training; confirm reference masses and trial packs to be supplied. |
Final specifications follow the approved quotation, layout, datasheet and project URS.
Options & project scope
Approved cartons, boxes, bags or finished packs within the qualified range.
Load-cell or EMFR weighing, reject type, verification sensors, reports and line handshake are configurable.
Documentation for the Carton Weight Checker records recipe, tare, tolerance, calibration, reject and production-data control, the confirmed utilities and the agreed acceptance tests; drawings, manuals and qualification records are supplied when ordered.
Controls & protection
Controls, alarms and interfaces are confirmed for the ordered configuration.
Recipe, tare, tolerance, calibration, reject and production-data control.
Infeed readiness: product spacing and conditioning before the weigh belt.
Approved transfer: accepted cartons continue; nonconforming cartons are automatically rejected where configured.
Configuration-specific: Electrical, pneumatic, data, printing, vision, reject and line-interface requirements are listed for the selected technology.
Configuration-specific: Dynamic weighing tolerance, repeatability and reject checks are defined for approved packs and operating conditions in the FAT protocol.
Load-cell or EMFR weighing, reject type, verification sensors, reports and line handshake are configurable.
Related machines
Frequently asked questions
The Carton Weight Checker checks every presented pack against a programmed weight tolerance to identify underweight or overweight units.
Suitable products and formats include approved cartons, boxes, bags or finished packs within the qualified range. Final suitability is confirmed from approved samples, drawings and process details.
An infeed belt spaces cartons, a dynamic weigh conveyor measures each pack and the controller passes or rejects it against the selected recipe.
The Carton Weight Checker handles material using product spacing and conditioning before the weigh belt.
The rated output in cartons per minute depends on pack length, infeed gap, conveyor stability, required weighing time, permissible weight variation and reject-device response.
The carton dimensions, nominal and tolerance weights, conveyor speed, product spacing and reject timing are entered and verified with approved good and challenge packs.
The frame, infeed and weigh conveyors, load-cell platform, guides, reject device and guarding are sized for the approved carton weight and line conditions.
The available control scope includes recipe, tare, tolerance, calibration, reject and production-data control. Final alarms and interlocks are documented in the approved control specification.
Load-cell or EMFR weighing, reject type, verification sensors, reports and line handshake are configurable.
The checkweigher is installed after the pack is complete and stable, with separate accepted and rejected paths plus upstream gap control and downstream status signals where included.
Available records can include the approved recipe and tolerance sheet, load-cell calibration procedure, challenge and reject test protocol, electrical drawings, layout, manuals and FAT report.
Please provide the following: minimum and maximum carton size and weight, tolerance, target output, reject method, line height and data requirement.
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