Line-centred design — the QT6-15 is specified alongside raw material feeding, mixing, pallet circulation, stacking and curing so that no station waits on another, a principle drawn from years of block line commissioning in Shandong.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT6-15 |
| Product Type | Automatic Hydraulic Concrete Block Making Machine |
| Rated Power | 31.25 kW |
| Voltage & Frequency | Configurable to local supply (basis to be confirmed) |
| Control System | PLC (language options to be confirmed) |
| Overall Dimensions (L × W × H) | 7100 × 1500 × 3000 mm |
| Net Weight | 8500 kg |
| Molding Cycle | 15–20 seconds depending on format |
| Hydraulic Pressure | 16–21 MPa |
| Main Vibration Form | Platform vibration |
| Pallet Size | 850 × 680 mm |
| Output – Hollow Block 400×200×200 mm | 6 pcs/mould, 16–20 s cycle, 8640 pcs/day |
| Output – Porous Block 240×115×90 mm | 14 pcs/mould, 15–18 s cycle, 22400 pcs/day |
| Output – Standard Block 240×115×53 mm | 30 pcs/mould, 14–17 s cycle, 54400 pcs/day |
| Applied Products | Hollow/solid blocks, pavers, interlocking blocks, curbstone, colored pavers |
| Raw Materials | Crushed stone, sand, cement, dust, fly ash, gravel, slag |
| Assembly State | Dismantling for shipment (basis to be confirmed) |
| Certification | CE declaration where applicable (basis to be confirmed) |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production for housing projects | Crushed stone, sand, cement and fly ash blends |
| Paver and interlocking brick runs for municipal works | Colored concrete mixes with fine aggregate |
| Curbstone manufacturing for road infrastructure | High-strength concrete with coarse gravel and slag |
| On-site block production for development contractors | Locally sourced sand, gravel and cement |
| Porous brick output for permeable surface requirements | Graded aggregate with controlled cement content |
What a Cycle Time Figure Hides About the Full QT6-15 Automatic Block Machine Production Line
The press cycle only matters if upstream feeding and downstream pallet handling can keep pace.
I watched a QT6-15 run lose nearly two hours every shift because the mixer could not deliver fresh batch fast enough for the 15-second cycle. The press sat idle while the operator waited, and the pallet return conveyor jammed because the stacking station had not been timed to the same rhythm. Quotations that list only the press capacity ignore these bottlenecks entirely [NEED_CITE:].
Matching Every Station to the Press Rhythm
The QT6-15 automatic block machine production line connects raw material batching, mixing, pallet feeding, pressing, stacking and curing rack handling into a single sequence. When the press completes a cycle in as little as 15 seconds, the mixer must discharge a full batch within that window and the pallet feeder must present the next pallet without delay. Each station is sized against the press cycle so throughput stays even from hopper to curing rack.
Where Bottlenecks Actually Show Up
The most common bottleneck is not the press itself but the pallet return loop. If cured blocks are not stripped and pallets are not sent back quickly enough, the pallet feeder runs dry and the press halts. Stacking and cubing must therefore be configured to handle the peak pallet flow rate, not just the average. This is why a line layout that shows every station’s cycle time is essential before any order is confirmed [NEED_CITE: block production line pallet circulation design].
Reading the Numbers Behind the Output Table
The QT6-15 operates with platform vibration and hydraulic pressure between 16 and 21 MPa. Higher pressure combined with strong vibration compacts the concrete mix tightly, which directly determines block density and compressive strength. The 850 × 680 mm pallet size dictates how many blocks fit per mould: six hollow blocks of 400×200×200 mm, fourteen porous bricks of 240×115×90 mm, or thirty standard bricks of 240×115×53 mm. Each format carries its own cycle time range, so the daily output figures in the specification table are tied to specific block dimensions and cannot be compared across formats without adjusting for mould count and cycle length.
The Cost of Treating the Press as a Standalone Purchase
When a buyer sources the press from one supplier and the mixer, pallet system and stacker from others, cycle time mismatches are almost guaranteed. The result is a line that never reaches the quoted capacity, plus finger-pointing between vendors when commissioning stalls. Pallets ordered in the wrong size or material will not fit the curing racks the buyer already has, forcing a replacement order before the first production run even starts [NEED_CITE: equipment integration in concrete block plants].
Why Buyers Source the Full Line Here
The QT6-15 press, moulds, pallets and handling equipment are specified as one matched system, so vibration force, hydraulic pressure and pallet dimensions are all set against the buyer’s actual mix design and target block format. Moulds are designed for the formats the buyer’s market demands, including custom drawings when standard formats do not fit. Automation level can start at semi-automatic pallet handling and be upgraded to full stacking and cubing as output grows. Line capacity calculations state the exact block format assumed for each output figure, so there is no ambiguity about what the plant will produce on day one. Voltage, frequency and PLC display language are confirmed before production begins, avoiding delays at commissioning.
Documentation & Verification
- Line layout drawing with cycle time stated for each station in the QT6-15 line
- Capacity calculation sheet naming the block format behind every output figure
- Pallet specification checked against your existing curing racks and forklift capacity
- Hydraulic and electrical schematic showing pressure ratings and wiring for the QT6-15
- Factory test record run on your target block format before dispatch
- Packing photographs and customs documentation support for the full line shipment
Installation, Commissioning & Support
- Foundation plan matched to the 7100 × 1500 mm footprint and 8500 kg mass of the QT6-15
- Power supply wiring sized for the 31.25 kW rated load with dedicated circuit breaker
- Dismantled components reassembled on-site with alignment checks before first run
- PLC parameter setting for your chosen block format and confirmed display language
- Operator training covering mould change, pallet loading and daily maintenance routines
- Wear parts list with reorder codes for hydraulic seals and vibration platform components
What to Prepare Before You Enquire
To size the QT6-15 automatic block machine production line correctly, share the block formats your market sells, the daily output you need for each format, and the local raw materials you plan to use. Confirm your site voltage and frequency, the language your operators need on the PLC screen, and whether your existing forklift and curing area can handle the 850 × 680 mm pallet. Let us know if you want to start semi-automatic and upgrade stacking later.
Frequently Asked Questions
Q: How is daily output calculated for the QT6-15, and which block format is each figure based on?
A: Each output figure in the specification table is tied to a specific block format, mould cavity count and cycle time range. The 8640 pcs/day figure, for example, assumes 400×200×200 mm hollow blocks at six per mould with a 16–20 second cycle. Changing the format changes both the mould count and the cycle, so a separate calculation is needed for every product you plan to run.
Q: Which line stations are included in the quotation?
A: The quotation covers the QT6-15 press, raw material feeding, mixing, pallet feeding, stacking and curing rack handling as a matched set. Pallet circulation and cubing are also included so that no station is left for you to source separately. Each station is specified to keep pace with the press cycle, preventing upstream or downstream bottlenecks.
Q: How is pallet size and material chosen to match my site?
A: The standard 850 × 680 mm pallet is checked against the curing rack dimensions and forklift capacity you already have on site. Pallet material is selected based on your curing method and expected lifespan. If your existing racks or forklift require a different size, the pallet and mould layout are adjusted before the order is confirmed.
Q: Can the line start semi-automatic and be upgraded later?
A: Yes. The QT6-15 line can begin with manual pallet handling and semi-automatic stacking, then add full automatic stacking and cubing as your output grows. The press and control system are specified from the start to accept the upgrade, so no major mechanical changes are needed when you add the automation modules later.
