Matched Line Integration — Every station from raw material feeding to wet-side stacking is timed against the QT4-15A molding cycle, so the press never waits for upstream feed or downstream clearance.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Fully Automatic Hydraulic Concrete Block Making Machine |
| Model | QT4-15A |
| Overall Dimensions (L×W×H) | 4100 × 1600 × 2600 mm |
| Rated Pressure | 16–21 MPa |
| Main Vibration Form | Platform Vibration |
| Vibration Frequency | 4200 r/min |
| Vibration Force | 55 KN |
| Pallet Size | 880 × 550 mm |
| Molding Cycle | 25–30 s (basis not stated in source — confirm block format, material and thickness) |
| Overall Power | 18.45 kW (source value — verify against final electrical schematic) |
| Total Mass | 4 T |
| Demolding Method | Hydraulic |
| Factory Area Baseline | 300 m² |
| Automation Level | Fully Automatic |
| Control System | PLC |
| Voltage & Frequency | Configurable — confirm before production |
| Warranty | 1 year (whole machine, excluding spare parts) |
| Loading | 1 × 40HQ container (basic equipment) |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production for load-bearing walls | Crushed stone, sand, cement, fly ash |
| Solid block manufacturing for partition walls | Sand, gravel, cement, slag |
| Interlocking paver production for walkways and driveways | Crushed stone, cement, colored pigment |
| Kerbstone and curb production for road infrastructure | Coarse aggregate, cement, dust |
| Porous permeable brick for stormwater management | Gravel, cement, fly ash |
What "25 Seconds per Pallet" Actually Means for Your Line
A press cycle is only as fast as the slowest station connected to it.
Many quotations quote a molding cycle without telling you which block format, wall thickness, or mix design it assumes. A 25-second cycle on a thin paver is a different story from a 25-second cycle on a 200 mm hollow block with high fly-ash content. When the block making machine production line is quoted without that context, the daily volume on your shop floor can fall well short of what you planned for. I have walked into plants where the press sat idle because the mixer could not feed fast enough, or the stacker could not clear cured pallets before the next pressing cycle demanded them [NEED_CITE: common block plant bottleneck causes in emerging markets].
Upstream Timing: Mixer Output Meets Press Demand
The QT4-15A presses one pallet every 25–30 seconds depending on format. Your mixer must deliver a consistent batch within that same window, or the press operator is watching an empty hopper. In a complete block making machine production line, the batching station, conveyor, and mixer are sized so that fresh material arrives slightly ahead of each press cycle — never late, and never so early that it slumps in the hopper. This is where line-level planning matters more than the press specification alone.
Downstream Synchronization: Pallet Return and Wet-Side Stacking
Once the press releases a green block on its 880 × 550 mm pallet, that pallet must travel to the curing area and an empty pallet must return before the next cycle. If the return conveyor or the stacker cannot keep pace, the press stops. In the plants I have helped configure across Shandong and overseas, we calculate the pallet travel time — including forklift transfer if the curing yard is separate — and confirm it fits inside the press cycle. The goal is a continuous loop where no station waits on another [NEED_CITE: pallet circulation design for continuous block production].
Reading the Specs That Shape Your Plant Layout
The 55 KN vibration force acting through platform vibration determines how densely the mix compacts on each pallet. Higher force means shorter vibration time for the same density, which shortens the overall cycle — but only if your mix design and aggregate grading can respond to that energy. The 16–21 MPa hydraulic rated pressure handles demolding without cracking green blocks, and the hydraulic power unit must be sized to supply both the press cylinder and the vibration system simultaneously without pressure drop. The 880 × 550 mm pallet size is the dimension that your curing racks, forklift forks, and stacking area must all accommodate. A pallet size chosen without checking the curing yard means expensive rack modification or a second forklift. The 300 m² factory area baseline gives a starting point, but actual footprint grows once you add raw material silos, a mixer platform, curing racks, and forklift travel lanes [NEED_CITE: hydraulic and vibration matching in block press design].
The Cost of Treating Supporting Equipment as an Afterthought
When pallet handling, stacking, and curing are left out of the quotation, the buyer ends up stacking blocks by hand at the end of the line. Green blocks moved too early lose strength. Pallets returned late stop the press. Forklifts shared between curing and raw material delivery create traffic conflicts that cut real output. These problems do not show up in a machine catalog; they appear on the first week of production when the daily tally disappoints [NEED_CITE: hidden costs of incomplete block line quotations].
Why Source the Full Line from One Configuration Point
Block machinery is our single focus, which means the QT4-15A is never quoted as a standalone press with the rest left to the buyer. We specify raw material feeding, mixing, pallet circulation, and stacking as one matched system where every station cycle is calculated against the others. Configuration is set against your actual mix design, local aggregate, and the block formats your market sells — not a catalog default. Mould design covers the formats you need, including custom drawings, so format changes do not eat into shift time. Automation level is selectable, meaning you can start with semi-automatic pallet handling and add a stacker later without replacing the press. Installation and commissioning include operator training so your team understands the line rhythm, not just the press controls.
Documentation & Verification
- Line layout drawing showing every station position with cycle time stated per station
- Capacity calculation restated for each block format you will actually produce
- Pallet specification matched to your curing rack design and forklift capacity
- Voltage, frequency, and PLC display language confirmed before production begins
- Hydraulic and electrical schematic showing utility connection points for the entire line
- Factory test record on your target block format before dispatch
Installation, Commissioning & Support
- Foundation plan sized to the QT4-15A footprint of 4100 × 1600 mm and dynamic vibration load
- Electrical connection points for the 18.45 kW total power draw with dedicated circuit guidance
- Container loading plan for 1 × 40HQ with dismantling sequence for on-site reassembly
- PLC language and control parameters set to your local voltage and frequency before shipment
- Operator training covering full line rhythm from mixer feed through pallet return and stacking
- Wear parts and mould list supplied with recommended replacement intervals
Before You Request a Quotation
To configure a line that actually matches your plant, we need to know the block formats and dimensions your market demands, your target daily output, and the raw materials available locally — including aggregate grading and cement type. Share your workshop dimensions and ceiling height so we can lay out curing racks and pallet circulation. Confirm your local voltage, frequency, and preferred PLC display language so the control system is set correctly before the line ships.
Frequently Asked Questions
Q: How do I verify the daily output is calculated for my specific block format?
A: We provide a capacity calculation that states the exact block format, wall thickness, and mix design assumed for each cycle time. You receive daily output figures for every format you plan to produce, not a single catalog number that may not match your actual product range.
Q: Which supporting equipment is included versus sourced separately?
A: The quotation specifies raw material feeding, mixer, pallet feeder, stacker, and curing rack handling as line items. You see exactly which stations are included and which — if any — you are sourcing locally, so there are no surprise gaps when the line arrives.
Q: How is the 880 × 550 mm pallet matched to my existing curing area?
A: We confirm your curing rack dimensions, forklift fork spacing, and yard layout before finalizing the pallet specification. If your existing infrastructure uses a different size, we adjust the pallet and mould configuration so the new line fits what you already have on site.
Q: What happens with voltage and control language before the line ships?
A: We confirm your local voltage, frequency, and preferred PLC display language during the proposal stage. The electrical schematic and control parameters are set accordingly before production, avoiding commissioning delays caused by mismatched power supply or unreadable screens.
Q: How are cycle times matched across stations so the press is not left idle?
A: Each station — mixer discharge, pallet feeder, press cycle, stacker — is timed against the QT4-15A molding cycle. The line layout drawing shows these timings so you can verify that no station creates a bottleneck that forces the press to wait.
