Precision In-Line Checkweigher for Assembly Lines
An in-line checkweigher that mounts right inside your assembly line: 1-3000g weighing range, ±0.5-2g accuracy — missing or short-packed items are rejected on the spot.
Precision In-Line Checkweigher for Assembly Lines (MQ-CW4530L3) — range 1-3000g, accuracy ±0.5-2g. Factory-direct from Guangdong, China. OEM & custom available.
Typical applications: Color boxes, electronics packaging boxes and other assembly-line products — in-line checkweighing mounted directly within the line
Key Features
- ✓Touch-operated start/stop buttons
- ✓Freely configurable upper and lower weight limits
- ✓Selectable stop-and-weigh or continuous weighing modes; pusher rejection with audible and visual alarms for out-of-spec products
- ✓Intuitive touch interface, multi-recipe storage, password-based access control, weighing records and intelligent fault detection
- ✓Non-standard customization available to customer requirements
- ✓Mounts directly in the middle of an existing line, saving both labor and floor space
Why Choose MQ-CW4530L3
Mounts right in the middle of your line
This machine needs no dedicated checkweighing line of its own. The weighing section is just L450mm×W300mm — standard 2-section, optional 3-section — dropping straight into the middle of your assembly line so products are checked as they flow through. It saves a full-time inspector and the floor space of a standalone station, with virtually no change to your existing line layout.
1g to 3kg covered by one machine
Weighing range 1-3000g, display division 0.1g, weighing accuracy ±0.5-2g. When a carton is short one manual or one cable, the weight difference is usually a few grams to tens of grams — far above this machine's decision threshold. A missing item has nowhere to hide on the scale; it's caught right there.
Dual mode: stop-and-weigh and continuous weighing
Belt speed is adjustable 5-40 m/min, so fast lines run continuous weighing without breaking flow; large or top-heavy cartons (checkable size L≤750mm, W≤600mm) can switch to stop-and-weigh, letting the product settle before the reading is taken — stability first. Pick the mode to match your line's pace instead of forcing the line to match the machine.
Faulty-item rejection plus audible-visual alarm
The moment an out-of-tolerance item is detected it acts: pusher-type or paddle-type rejection, selectable to suit the product shape, with a simultaneous sound-and-light alarm to alert line-side staff. Non-conforming products are physically separated from the main flow — no reliance on an operator's quick eyes and hands, so nothing slips through on night shifts or in peak season.
100 recipes, hassle-free changeovers
Multi-product mixed lines are the norm for cartons and electronics packaging. This machine stores 100 product recipes with freely set upper and lower weight limits; at changeover, call one up by product name on the touch interface. Password-based access control prevents accidental parameter changes, and weighing records export via USB for full traceability.
Optional coding & sorting, non-standard customizable
Beyond checkweighing, options include real-time printing, in-line inkjet coding, in-line code reading, in-line labeling, and code-reading sorting — merging weight-check pass and coding traceability into one stop. The machine itself supports non-standard customization to your line: height, direction, and reject lane can all be built to your site.
Problems It Solves for You
The end of the assembly line relies on manual spot checks. A carton the sampling missed ships out short a charger or a manual, becomes a customer complaint, a return, even a retail fine — and when it's time to assign blame, you can't even say which shift let it through.
This machine sits on the line for 100% inspection: within the 1-3000g range every carton is weighed, and any short-weight from a missing item beyond the upper/lower limits triggers immediate pusher rejection and a sound-and-light alarm. Chinese weighing records export via USB, so which shift and which batch is all traceable.
You want to add a checkweighing station but the line is already packed; a separate standalone checkweighing line means tearing up the line, adding transfer conveyors, and taking a hit on floor space and downtime.
This machine is designed precisely to mount in the middle of an assembly line. The weighing section is only L450mm×W300mm; splice it into the existing line and it runs — no change to your current layout, saving the labor and space of a dedicated checkweighing station.
One line runs dozens of carton SKUs; at changeover a veteran manually resets the upper and lower limits, and one misplaced decimal misjudges the whole batch. New staff don't dare touch it.
The machine stores 100 recipes; set upper and lower limits however you like and call them up by product name with one tap. Password-based access control keeps parameter editing locked to the administrator — ordinary operators can only select a recipe, not change parameters.
Packaging boxes are large and top-heavy; on an ordinary checkweigher, dynamic weighing shakes and the reading drifts, over-rejecting and drawing complaints from the line.
The checkable product size is widened to L≤750mm, W≤600mm, with a stop-and-weigh mode — large items settle in the weighing section before the reading is taken. Combined with 0.1g display division and ±0.5-2g weighing accuracy, it drives the false-reject rate down.
Technical Specifications
| Product model | MQ-CW4530L3 |
|---|---|
| Display division | 0.1g |
| Inspection weight range | 1-3000g |
| Weight checking accuracy | ±0.5-2g |
| Size of weighing section | L 450mm*W 300mm |
| Suitable product size | L≤750mm；W≤600mm |
| Elimination method | 推杆式、拨杆式可选 |
| Optional Features | 实时打印、读码分拣、在线喷码、在线读码、在线贴标 |
| Storage formula | 100种 |
| Belt speed | 5-40米/分钟 |
| power supply | AC220V±10% |
| Shell material | 碳钢喷漆 |
| data transmission | USB数据导出 |
| Sorting section | 标准2段，可选3段 |
Functions in Detail
Rejection method: pusher or paddle selectable
Faulty items aren't stopped by people. Pusher type suits cartons and packaging boxes with regular flat faces, pushing them sideways off the main line; paddle type suits faster lines with small product spacing, sweeping items into a recovery lane. Rejection triggers a sound-and-light alarm at the same time, so line-side staff can see from afar which item failed. Choose by product form and line layout.
Data management: Chinese records + USB export
Every weighing leaves a Chinese-language record; plug in a USB drive after the shift to export and archive the data. Real-time printing is optional, so weighing results travel with the product. If a customer complains of a missing item, pull up that day's batch weighing records to prove whether it left the factory compliant or the issue arose in distribution. With password-based access management, who changed which parameter and when is clearly attributable.
Two weighing modes match line cadence
In continuous weighing mode the belt is adjustable 5-40 m/min, keeping pace with the line without breaking flow; stop-and-weigh mode lets the product settle in the weighing section before reading — ideal for larger, top-heavy boxes, avoiding dynamic sway affecting the reading. Two approaches in one machine, so re-cadencing the assembly line needs no equipment change.
Optional functions: merge checkweighing and coding into one step
Optional in-line inkjet coding, in-line labeling, in-line code reading, code-reading sorting, and real-time printing are supported. A typical setup codes/labels only after the weight check passes; rejects are removed and left uncoded — mechanically preventing short-packed items from leaving with a compliant mark. One machine occupies one line segment and does the work of two processes.
Structure & installation: save labor and space
The weighing section is L450mm×W300mm, standard 2-section structure with optional 3-section (adding a reject or buffer section), set directly in the middle of the existing assembly line with no need to dismantle or re-lay it. The carbon-steel painted housing suits the workshop environment, running on ordinary AC220V±10% mains. Daily cleaning is just wiping the belt and weighing platform — maintenance needs no dedicated technician.
Industries & Application Scenarios
End-of-line in-line checkweighing for phone, earphone and charger color-box lines. One missing accessory — a cable, a manual, a SIM pin — throws the weight over tolerance instantly; the pusher rejects it on the spot, keeping short-packed units out of the channel.
Kettles, shavers and the like are weighed straight after boxing to verify the power cord and accessory pack are complete. Checkable size L≤750mm, W≤600mm fits common small-appliance color boxes.
Holiday gift boxes and combo sets mix many items, and manual counting easily misses one. Set upper and lower limits by the set's standard weight — a missing sample vial or greeting card triggers the sound-and-light alarm and rejection.
Building blocks and assembly toys have many parts and varied specs; 100 recipes cover different SKUs, called up with one tap at changeover. A color box missing a parts pack is separated by the pusher right on the line.
Carton factories assemble and box for clients; before shipment each box is checkweighed, with optional in-line labeling and coding — merging weight-check pass and code traceability into one process, with solid records for factory audits.
Screw packs and parts kits are boxed by set; the 1-3000g range covers everything from a small bag of fasteners to a full box of parts. A missing pack's weight difference far exceeds the ±0.5-2g accuracy, so it's reliably caught.
Own Factory · Seeing Is Believing
Guangdong Miqi designs, builds and tests every machine in-house — each unit is bench-tested before shipment. Free sample testing, on-site factory visits and live video of the running machine are all welcome.
Frequently Asked Questions
What is the price of Precision In-Line Checkweigher for Assembly Lines (MQ-CW4530L3)?+
Pricing depends on rejection type, number of weighing sections and options (printing, barcode reading, labeling). MIQI is the manufacturer — send your product weight, size and line speed for a same-day factory-direct quotation via WhatsApp +86 133 7765 0530 or the inquiry form.
Does MIQI export custom solutions worldwide?+
Yes. We ship worldwide with export wooden-case packing, full English documentation, and voltage built to your country's standard (220V/380V, 50/60Hz). Remote commissioning support via video call; OEM branding welcome.
Tell Us About Your Product
Share your product weight range, dimensions and line speed — our engineer replies within 24 hours with model recommendation and quotation.
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