Matched System Design — the QT6-15 block production line pairs the press with upstream feeding and downstream stacking so cycle times stay synchronized across every station.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT6-15 |
| Product Type | Fully Automatic Concrete Block Making Machine |
| Molding Way | Vibration and hydraulic pressing |
| Rated Pressure | 21 MPa |
| Molding Cycle | 15 s–20 s (basis not stated in source — confirm block format, material and thickness) |
| Pallet Size | 900 × 700 mm |
| Main Machine Weight | 6000 kg |
| Output — Hollow Block 400 × 200 × 200 mm | 6 pcs/pallet, 1440 pcs/h, 11520 pcs/8 h |
| Output — Paving Brick 200 × 100 × 60 mm | 21 pcs/pallet, 5040 pcs/h, 40320 pcs/8 h |
| Output — Solid Brick 240 × 115 × 53 mm | 32 pcs/pallet, 7680 pcs/h, 61440 pcs/8 h |
| Raw Materials | Cement, sand, fly ash, stone powder, slag |
| Product Formats | Hollow blocks, paving bricks, solid bricks, curbstones |
| Simple Line Configuration | JS500 mixer, 8 m conveyor belt, automatic stacker |
| Full Line Configuration | Cement silo, screw conveyor, cement scale, batching machine, pallet loader, block and pallet separator |
| Voltage | Customizable to local standard (source value — verify against manufacturer catalog) |
| Warranty | 1 year (excluding wearing parts) |
Application Suitability
| Application | Material or Output |
|---|---|
| Block and paver production plants | Hollow blocks, paving bricks, solid bricks and curbstones from cement, sand, fly ash or slag |
| Construction contractors producing blocks on-site | Crushed stone and cement mixes for hollow blocks used in wall construction |
| Concrete product manufacturers adding formats | Paving bricks and kerbstones from stone powder and cement blends |
| Development or housing project contractors | Solid bricks and hollow blocks from locally sourced sand and fly ash |
What "11,520 Blocks per Day" Actually Means on Your Site
The published output figures apply only to specific block formats and assume uninterrupted upstream feeding and downstream stacking.
Many quotations quote a single cycle-per-hour number without naming the block size behind it. On a real site in East Africa I watched a line rated for over ten thousand hollow blocks struggle past five thousand because the mixer could not keep pace and pallets piled up waiting for manual stacking. The press itself was never the bottleneck — everything around it was [NEED_CITE: common causes of throughput shortfall in block production lines]. A concrete block making machine with supporting equipment specified as one matched system avoids that gap.
How the Stations Stay in Step
Every station on the QT6-15 block production line is timed against the 15–20 second press cycle. The JS500 mixer in the simple configuration delivers a batch volume that aligns with the number of pallets the press consumes per minute, so the hopper never runs dry. On the full line the batching machine weighs cement and aggregate separately before discharge, keeping the mix consistent pallet after pallet.
Why Pallet Handling Decides Real Output
Downstream, the automatic stacker lifts cured pallets off the line at a rate matched to the press discharge. The block and pallet separator then returns empty pallets to the loader before the next cycle calls for them. When any of these stations lags, the press sits idle and the quoted cycle time becomes theoretical [NEED_CITE: synchronization requirements between press and auxiliary stations].
Reading the Numbers Behind the Pressure and Vibration
The 21 MPa rated hydraulic pressure works together with vibration to compact the mix inside the mould cavity. Higher pressure alone does not guarantee denser blocks; the vibration frequency must also match the aggregate gradation so particles settle before the hydraulic head locks them in place. The 900 × 700 mm pallet size was chosen to fit standard curing racks and forklift tines used in most small-to-medium block yards, but confirming your rack spacing before order prevents costly pallet re-sawing later. Mould change time depends on whether the optional quick-clamp system is fitted, and that choice directly affects how many format switches a shift can absorb without losing production hours.
The Cost of Leaving Stations off the Quotation
When pallet handling and stacking are treated as optional extras, the line arrives with the press as the only automated island. Workers manually lift heavy wet pallets, block breakage rises, and curing racks fill unevenly. Voltage and frequency left unconfirmed until the crate arrives can delay commissioning by weeks while a local panel builder rewires the control cabinet [NEED_CITE: electrical compatibility issues reported at overseas commissioning sites]. These are not engineering failures — they are specification omissions that surface only after the container is opened.
Why Source the Full Line from One Supplier
Block machinery is our single focus, so the QT6-15 press, moulds, pallets and handling equipment are specified as one matched system rather than assembled from separate vendors. Configuration starts from your actual mix design and local aggregate, not a catalogue default. We confirm pallet size against your existing curing racks and forklift before production begins. Automation level is selectable — you can start with the simple line and add batching or pallet loading later without replacing the press. Installation support includes operator training on the exact control language your crew will read every day.
Documentation & Verification
- Line layout drawing showing each station position and pallet flow path for the QT6-15
- Capacity calculation sheet stating the block format assumed for every output figure
- Pallet specification matched to your curing rack dimensions and forklift capacity
- Voltage, frequency and PLC display language confirmation signed before production
- Factory test record covering press, mixer, conveyor and stacker as one integrated run
- Operation and maintenance manual with wear parts and mould replacement intervals
Installation, Commissioning & Support
- Foundation plan sized to the 6000 kg main machine weight and vibration load distribution
- Dedicated circuit specification based on confirmed voltage and frequency for the QT6-15
- Pallet loader and stacker alignment checked against your curing rack height on site
- First-run parameter setting covering vibration duration and hydraulic dwell per block format
- Operator training delivered in the PLC language confirmed at order stage
- Wear parts list with reorder part numbers for hydraulic seals and mould liners
- Scheduled maintenance intervals for mixer blades, conveyor belts and pallet return guides
Before You Request a Quotation
To size the QT6-15 concrete block making machine with supporting equipment correctly, share the block formats your market buys most, the daily volume you need for each format, and the raw materials available locally with their gradation data. Include your site voltage, frequency and preferred control language, plus the curing rack dimensions and forklift model already on your yard so we can confirm pallet compatibility before the line enters production.
Frequently Asked Questions
Q: How is line output calculated per block format, and what cycle time does each format assume?
A: Each output figure in the specification table is tied to a named block size and the corresponding mould cavity count. The 15–20 second cycle range covers formats from hollow blocks to paving bricks, but the exact cycle for your target format depends on mix workability and required block density. We provide a per-format capacity sheet with the quotation.
Q: Which supporting equipment is included and which is optional?
A: The simple line ships with a JS500 mixer, an 8 m conveyor and an automatic stacker. The full line adds a cement silo, screw conveyor, cement scale, batching machine, pallet loader and block-pallet separator. You can select either configuration or add individual stations later without replacing the QT6-15 press.
Q: How are pallet size and material chosen to match my curing area and forklift?
A: The standard 900 × 700 mm pallet fits most rack and forklift setups in small-to-medium block yards. Before production we ask for your rack spacing and forklift tine width to confirm fit. If your curing area requires a different pallet dimension or material, the specification is adjusted accordingly.
Q: How do upstream feeding and downstream stacking cycle times stay synchronized with the press?
A: Mixer batch volume, conveyor speed and stacker lift rate are all calculated against the press cycle so no station waits or overflows. On the full line the batching machine discharge timing and pallet loader feed interval are PLC-linked to the press controller for continuous synchronization.
Q: What voltage, frequency and control language are confirmed before shipment?
A: We request your site voltage, frequency and preferred PLC display language at the proposal stage and record them on a signed confirmation sheet. The control cabinet is then built and tested to those values, avoiding rewiring delays during on-site commissioning [NEED_CITE: pre-shipment electrical verification practices for exported machinery].
