QTJ4-24 Semi-Automatic Block Making Machine – Manufacturer Full Range

Semi-Automatic Tier — The QTJ4-24 sits where a first-time plant or a contractor’s on-site yard needs block production without committing to a fully automatic line, so the machine, pallet and mould arrive as one matched system rather than three separate purchases.

Technical Specifications

Application Suitability

What a "24-Second Cycle" Leaves Out About Daily Output

Cycle time only becomes daily output once the block format, mix design and pallet handling are factored in.

I have watched buyers take a quoted cycle of 24-26 seconds and multiply it into a shift total, only to find that a 400×200×200mm hollow block pulls the real cycle closer to the upper end while a thin paving brick sits at the lower end. Mix designs built around a clean washed sand from a catalogue will also behave differently from the silt-heavy river sand common in many regions, extending the vibration time needed to reach full compaction [NEED_CITE: effect of aggregate silt content on block compaction cycle]. The QTJ4-24 block machine manufacturer should therefore issue a capacity sheet that states the output per format, not a single headline number.

Where the QTJ4-24 Sits on the Investment Ladder

This model occupies the semi-automatic tier, meaning the press and feeding are powered while pallets are loaded and removed by hand or with a simple rack system. For an entrepreneur setting up a first plant, that keeps capital outlay contained and leaves room to add automatic stacking later.

Footprint, Yard Space and the Pallet Question

The overall 3600×1700mm footprint fits inside a standard workshop bay, but the 850×450mm pallet size must match the curing racks and forklift the buyer already uses. Mismatched pallets mean blocks are handled twice before they ever reach the yard. [NEED_CITE: pallet size compatibility with curing yard layouts]

Reading the Specification Sheet Beyond the Headline Numbers

The dual-layer vibration system totals 9kW across four vibrators, which is the force that compacts the mix against the mould walls and determines the green strength of the block at demoulding. The 45kN vibration force rating should be read alongside the 350-type reducer on the mould lifting mechanism, which is sized to handle continuous cycling without the gear wear that shows up as uneven block height after a few months. Overall power at 11.95kW keeps the machine within the reach of a standard workshop supply without requiring a dedicated transformer. The full-automatic spiral feeder ensures each mould cavity receives a consistent charge, reducing density variation from one cycle to the next [NEED_CITE: spiral feeder uniformity versus manual distribution].

The Cost of Skipping the Mix-Design Conversation

When a machine is configured against a default catalogue mix and the buyer’s local aggregate carries high clay content, the result is blocks that crumble at the corners during pallet removal. Buyers then slow the cycle down to compensate, cutting real output well below expectation and blaming the machine rather than the specification gap.

Why Specify the Line From One Source

The QTJ4-24 is quoted as a matched set of press, mould, pallet and handling stations, so cycle times across the line actually align. Configuration is built around the buyer’s target block format and local raw material rather than a catalogue default. Moulds are available for the formats the buyer’s market moves, including custom drawings for non-standard shapes. Automation level is selectable, allowing a plant to start semi-automatic and add automatic stacking when volume justifies it. Installation support includes operator training on the exact mix and formats specified. [NEED_CITE: single-source block line integration benefits]

Documentation & Verification

• Line layout and capacity calculation stating the block format assumed for the quoted output.
• Machine specification sheet confirming vibration force, pallet size and mould format.
• Mould drawing and format list for every block shape included in the order.
• Voltage, frequency and control display language confirmed in writing before production.
• Factory test record on the buyer’s specified mix and block format before dispatch.

Installation, Commissioning & Support

• Foundation must be level and cured to carry the 2T machine mass plus dynamic vibration load.
• Power supply must match confirmed voltage and frequency, with a dedicated circuit for the 11.95kW draw.
• Machine is shipped dismantled for container loading; re-assembly on site follows the marked bolt points.
• First run sets vibration time and pressure against the buyer’s local mix to confirm block strength.
• Operator training covers mould change procedure using the 350-type reducer lifting system.
• Wear parts list identifies the vibrator mounts and spiral flighting as the first scheduled replacements.

What to Send With an Enquiry

A usable quote starts with the target block formats, the daily volume expected per format, and a description of the sand and stone available locally. Site voltage and frequency, plus the pallet size already in use in the curing yard, prevent a specification mismatch before the machine is built.

Frequently Asked Questions

Q: What block formats can the QTJ4-24 produce and how is output stated?
A: The QTJ4-24 produces interlocking, paving, hollow and solid blocks via mould changes. Output is stated per format with the cycle time and mix assumed, so a hollow block cycle differs from a thin paving brick cycle and daily totals reflect that reality rather than a single headline number.

Q: Where does the QTJ4-24 sit in the range and when should I look at the next tier?
A: It sits in the semi-automatic tier with powered pressing and spiral feeding but manual pallet handling. When daily volume grows and labour on pallet movement becomes the bottleneck, the next tier adds automatic stacking and cubing to keep the press running continuously.

Q: What pallet size does the QTJ4-24 use and is it compatible with my yard?
A: The machine uses an 850×450mm pallet. Before order, we confirm that this size matches your existing curing racks and forklift so blocks move from press to yard without double handling or custom rack fabrication.

Q: What voltage and control options are available for my market?
A: Voltage, frequency and control display language are confirmed in writing before production. This avoids the delay of rewiring or replacing control components after the machine arrives on site and the local electrician opens the cabinet.

Q: What is included in the quotation besides the press itself?
A: The quotation covers the press, the specified moulds, the pallets and the supporting handling stations that keep the press fed. Items such as raw material mixing and curing yard infrastructure are noted separately so the total line cost is visible before commitment.