Hollow Block QT4-18 Concrete Block Making Machine – Manufacturer

Matched System Design — the QT4-18 is specified as host press, mixer, pallet and mould together, not assembled from separate supplier quotes.

Technical Specifications

Application Suitability

What "1200 Pieces per Hour" Leaves Out

Capacity means nothing without the block format attached.

When a concrete block making machine manufacturer quotes a single hourly figure, buyers often discover on site that their actual product cycle runs longer than the brochure assumed. I have watched a Nigerian crew stare at a machine rated for one format while their market demanded another, cutting real daily output well below expectation. The QT4-18 output figures above are stated per block size — 400×200×200mm hollow, 400×150×200mm hollow, and 240×115×53mm solid — so the buyer knows which format drives which number [NEED_CITE: block format cycle time assumptions in capacity quotation].

Where the QT4-18 Sits in the Range

The QT4-18 occupies the semi-automatic tier, bridging the gap between mobile egg-laying machines and fully automatic lines with stacking and cubing. Buyers moving off manual pallet handling find this model introduces hydraulic pressing and controlled vibration without the footprint and investment of a high-capacity plant. It suits a first block plant, an on-site contractor production setup, or an existing producer adding paver and curbstone formats to the current range.

Pallet Handling and the Curing Gap

Semi-automatic operation means the press cycles under hydraulic control, but pallets move between press, curing rack and return station through manual or trolley-assisted handling. This keeps the initial investment contained while leaving room to add automatic pallet feeding and stacking later as volume grows. The 850×550×25 mm pallet size is chosen to match standard curing rack spacing and forklift dimensions common at this plant scale [NEED_CITE: pallet size and curing rack compatibility in block plants].

Vibration Force, Pressure and Block Density

The 40-50KN exciting power drives bed mould vertical vibration while upper mould compression vibration works in tandem, compacting the mix from both directions. Hydraulic pressure holds the upper mould steady against this vibration, forcing the concrete into mould corners and producing consistent density across the block face. When vibration force and hydraulic pressure are tuned to the buyer’s actual mix design and local aggregate, block strength stays within tolerance batch after batch. The JQ350 mixer feeds this system at a rate matched to the 15-25s moulding cycle so the press does not sit idle between batches.

The Cost of Skipping Configuration Details

Machines configured for a catalogue default mix rather than the buyer’s local aggregate produce blocks with inconsistent strength, leading to rejected batches and rework. Pallets specified without regard to the curing area the buyer already has force a second handling step that slows the whole line. Voltage and frequency left unconfirmed before production mean the motor winding arrives mismatched to the local grid, delaying commissioning until a transformer or rewound motor arrives on site [NEED_CITE: electrical mismatch delays in equipment commissioning].

Why Source This Machine Through Shiyue

Block machinery is the single focus, so the QT4-18 host press, JQ350 mixer, pallet specification and mould set are quoted as one matched system rather than assembled from separate suppliers. Mould design covers the formats the buyer’s market actually sells, with custom drawings available for non-standard block sizes. Automation level is selectable — a buyer can start semi-automatic on the QT4-18 and add pallet feeding or stacking modules as production volume justifies the investment. Configuration is set against the buyer’s mix design and local aggregate, not a generic default.

Documentation & Verification

• Line layout and capacity calculation stating the block format assumed for each QT4-18 output figure
• Machine specification sheet confirming hydraulic pressure and vibration force matched to buyer’s mix
• Mould drawing and format list covering the specific block sizes the buyer’s market requires
• Voltage, frequency and control language confirmation recorded before QT4-18 production begins
• Factory test record on buyer’s target block format before dispatch

Installation, Commissioning & Support

• Foundation plan showing load points for the 3T QT4-18 frame and JQ350 mixer placement
• Dedicated power circuit sized for the 24KW rated load with voltage and frequency confirmed pre-production
• Machine arrives dismantled for container loading; reassembly sequence provided with bolt torque values
• First-run parameter setting on buyer’s actual raw material to verify moulding cycle and block density
• Operator training covering mould change procedure, hydraulic station checks and daily lubrication points
• Wear parts list with reorder part numbers for hydraulic seals, vibration motor bearings and mould liners

Before You Send an Inquiry

To size the QT4-18 correctly, the conversation needs to start with the block format you actually sell, the daily volume you need to hit, and the raw materials available locally. Share your workshop dimensions and existing curing rack layout so pallet size and handling can be matched. Confirm the voltage, frequency and PLC display language required at your site before production is scheduled.

Frequently Asked Questions

Q: What is the realistic daily output of the QT4-18?
A: Output depends on block format. For a 400×200×200mm hollow block at 4 pcs per mould, the QT4-18 produces 9600-13440 pieces over an 8-hour shift. For a 240×115×53mm solid block, the figure rises to 16200-19440 pieces per 8-hour shift. We quote capacity per format so the buyer can plan against the product their market actually demands.

Q: Can the QT4-18 handle fly ash as a raw material?
A: Yes. The QT4-18 processes crushed stones, sand, cement, dust and fly ash. Vibration force and hydraulic pressure are set to match the buyer’s specific mix design and local aggregate characteristics, ensuring block density and strength remain consistent across batches regardless of which raw materials are sourced locally.

Q: How quickly can an operator change the mould?
A: The QT4-18 mould mounting is designed for quick swap between hollow, solid, paver and curbstone formats on one host press. Operators trained during commissioning complete a change without losing a full shift, preserving format flexibility across the production day.

Q: Where does the QT4-18 sit compared to fully automatic lines?
A: The QT4-18 is the semi-automatic tier — hydraulic pressing with controlled vibration, manual or trolley-assisted pallet handling. Fully automatic lines add automatic pallet feeding, stacking and cubing for higher volume plants. Buyers can start on the QT4-18 and add automation modules as production volume grows.

Q: Is voltage and control language confirmed before shipment?
A: Voltage, frequency and PLC display language are confirmed with the buyer before the QT4-18 enters production. This avoids the common problem where a machine arrives on site with motor windings or a control interface that does not match the local electrical grid or operator language, delaying commissioning.