QTJ4-24 Semi Automatic Cement Block Machine | Full Range

Matched System Supply — every component from the 850×450 mm pallet to the 350-type mold reducer is specified as one coordinated set, so the QTJ4-24 arrives as a complete working station rather than a collection of mismatched parts.

Technical Specifications

Application Suitability

What "24-26 Seconds per Cycle" Actually Means for Your Daily Output

The QTJ4-24 semi-automatic block machine manufacturer quotes cycle time — but real daily output depends entirely on which block format you run and how your curing logistics are set up.

Many quotations list cycles per hour as if the number applies universally across every block shape. A 24-second cycle on a small solid brick produces a very different hourly count than the same cycle on a large hollow block. The vibration force of 45 kN must be matched to your specific mix design and local aggregate type, or block density will vary between batches. I have seen machines arrive at sites where the aggregate was entirely different from what was tested at the factory, and the resulting blocks failed compression requirements. [NEED_CITE: aggregate grading standards for concrete block production]

Placing the QTJ4-24 Within the Full Stationary Range

The QTJ4-24 semi-automatic block machine manufacturer positions this model in the entry tier of stationary presses, where the investment stays manageable for a first plant or a contractor producing blocks on-site. It delivers mechanical vibration combined with pressure molding, which handles standard cement-sand-stone mixes without requiring the hydraulic systems found in higher tiers. The semi-automatic configuration means pallet feeding and block stacking remain manual operations, keeping the initial capital requirement lower while preserving an upgrade path toward more automated tiers in the range.

How the Stations Around the Press Determine Real Throughput

A press never operates in isolation. The 850×450 mm pallet size dictates how many blocks fit per cycle, and the pallet material must withstand repeated vibration cycles without warping. Full-automatic spiral material distribution ensures the mix spreads evenly across the pallet surface, preventing density variations between blocks on the same board. The 350-type reducer for mold lifting is sized for continuous operation, reducing the risk of gear failure during high-volume production days. [NEED_CITE: pallet material lifespan under vibration stress in block plants]

Reading the Specification Sheet Against Your Actual Conditions

The 45 kN vibration force comes from four vibrators — two 3 kW units below and two 1.5 kW units above the mold. This dual-level vibration arrangement compacts the mix from both directions, which matters when you are running hollow blocks where wall uniformity determines structural performance. The 11.95 kW overall power draw tells you the electrical supply requirement; confirm your site voltage and frequency before production begins, because a mismatch will prevent commissioning. The 24-26 second molding cycle applies to a specific block format and thickness — requesting the capacity calculation sheet that states which format was assumed prevents surprises after installation. The 2 T total mass also signals foundation requirements; a reinforced concrete pad is standard for stationary presses in this class.

The Hidden Cost of Underspecifying the Line

When buyers focus only on the press and skip the pallet handling and curing logistics, they end up stacking wet blocks by hand and losing output to breakage. The semi-automatic configuration of the QTJ4-24 means manual pallet handling, so your labor plan must account for workers moving pallets to and from the curing area. If your existing forklift cannot handle the 850×450 mm pallet dimensions, you will either replace the forklift or reconfigure the pallet size before the machine ships. Mould change time on a mechanical press varies with operator familiarity and bolt arrangement; if format flexibility is central to your business model, confirm the changeover procedure and tools required before the first production run. [NEED_CITE: typical mould changeover procedures for mechanical block presses]

Why This Source Matches Machine to Market

The block machinery focus means the QTJ4-24 arrives with mould, pallet, and handling specified as one matched system, not assembled from separate vendors who shift blame when output falls short. Configuration is set against your actual mix design and local aggregate, not a catalogue default that assumes river sand when your site uses crushed volcanic rock. Mould design covers the formats your market actually sells, with custom drawings available when standard options do not match. The automation level is selectable, so you can start with the semi-automatic QTJ4-24 and step up within the range as demand grows. Installation support includes commissioning and operator training at your site, addressing the vibration parameter adjustments that I have seen make the difference between rated capacity and sixty percent of it.

Documentation & Verification

• Line layout and capacity calculation stating the block format assumed for the 24-26 s cycle
• Machine specification sheet confirming pallet size, vibration force, and overall power
• Mould drawing and format list covering hollow, solid, interlocking, and paving options
• Voltage, frequency, and control language confirmation document before shipment
• Factory test record on your specified block format before dispatch
• Operation and maintenance manual with wear parts and mould replacement schedule

Installation, Commissioning & Support

• Reinforced concrete foundation required to support the 2 T machine mass under vibration loads
• Three-phase power supply matching confirmed voltage and frequency, with dedicated circuit for the 11.95 kW draw
• Machine ships dismantled for container loading, with reassembly and alignment at your site
• First-run parameter tuning sets vibration force and material distribution timing to your specific aggregate
• Operator training covers mould change procedure, daily maintenance, and safety protocols
• Wear parts list and mould inventory planned for first replacement cycle before it is needed

Before You Send an Inquiry

Provide the block formats you plan to produce and the daily volume you need, so the capacity calculation reflects your actual product mix. Confirm your local aggregate type and grading, because the vibration parameters must be tuned to your material, not a standard test sample. State your site voltage, frequency, and preferred control display language to prevent delays when the machine arrives. If you have existing pallets or forklifts, share their dimensions so the 850×450 mm pallet specification is verified against your handling equipment.

Frequently Asked Questions

Q: How is the QTJ4-24’s daily output calculated, and which block format does the cycle time assume?
A: The 24-26 second molding cycle is measured on a specific block format and thickness. Requesting the capacity calculation sheet before ordering tells you exactly which format was assumed, so you can project real daily output for the hollow or solid blocks you will actually sell rather than a generic cycles-per-hour figure.

Q: Where does the QTJ4-24 sit in the full machine range — and when should I step up?
A: This model occupies the semi-automatic entry tier, suited for first plants or on-site contractors with moderate volume needs. If your target output requires continuous pallet cycling and automatic stacking, the range includes higher tiers with integrated pallet handling and cubing systems that reduce manual labor.

Q: What voltage, frequency, and control language options are available for my market?
A: The QTJ4-24 is configurable for different electrical standards and control display languages. These must be confirmed before production, not at the shipping stage, because a voltage mismatch will prevent commissioning entirely and language settings affect operator training effectiveness.

Q: What mould formats are included, and how long does a mould change take?
A: The standard mould range covers hollow blocks, solid blocks, interlocking bricks, and paving bricks. Changeover time depends on the bolt arrangement and operator familiarity. Confirming the mould change procedure and required tools during the quotation stage prevents lost shifts when you switch formats in production.

Q: What supporting equipment do I need around the QTJ4-24?
A: The semi-automatic configuration requires manual pallet handling, so your plan must include pallet storage racks, a curing area sized for the 850×450 mm pallets, and a forklift or cart system for moving pallets between press and curing zone. Raw material mixing and feeding equipment completes the production line.