Integrated Line Matching — every station from batching to stacking is timed against the press cycle so the main unit never idles waiting for upstream feed or downstream pallet removal.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT4-15A |
| Product Type | Fully Automatic Hollow Block Making Machine |
| Overall Dimensions | 7100 × 1700 × 2610 mm |
| Main Vibration Form | Platform vibration |
| Vibration Frequency | 4600 r/min |
| Exciting Power (Vibration Force) | 35.5 kN |
| Rated Pressure | 16 MPa |
| Pallet Size | 900 × 500 × 25 mm |
| Molding Cycle | 15–20 s |
| Over Power | 25.7 kW |
| Automation Level | Fully automatic |
| Line Configuration | Main block machine + mixer + belt conveyor + automatic stacker + automatic pallet feeder + batching plant + cement silo |
| Motor Voltage | 380V, 3-phase, 50Hz (customizable to local voltage) |
| Mould System | Exchangeable moulds for hollow, solid and paving blocks |
| Warranty | 1 year (excluding wearing parts) |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production | Cement, crushed stone, sand, fly ash, gravel aggregate |
| Solid block production | Dense concrete mix from local sand and stone dust |
| Paving block / road paver production | Colored or standard concrete with fine aggregate finish |
| Complete block plant setup | Full line from raw material batching through to automatic stacking |
What a "Molding Cycle 15–20 s" Quotation Actually Means
Cycle time only translates to daily output when every upstream and downstream station can keep pace with the press.
I once watched a well-tuned block machine sit idle for seconds at a time because the mixer could not discharge fast enough, and the buyer lost a meaningful portion of their expected shift output. Quoted cycle figures for an automatic block making machine production line rarely state that the batching plant, belt conveyor, pallet feeder and stacker must all complete their movements within that same window. If one station lags, the press waits and capacity drops [NEED_CITE: industrial line balancing principles for synchronized production stations].
How Line Stations Connect Around the Press
The QT4-15A automatic block making machine production line places the press at the center of a timed sequence. Raw materials move from the batching plant through the cement silo and belt conveyor into the mixer, then to the press hopper. The automatic pallet feeder positions a 900 × 500 mm pallet under the mould, the press completes its 15–20 s cycle, and the wet block on its pallet travels to the automatic stacker for transfer to the curing area. Each station must finish its task before the next press cycle begins.
Where Bottlenecks Surface First
The mixer discharge rate and belt conveyor speed set the ceiling for how quickly the press hopper refills. If the local aggregate is heavier or more abrasive than assumed at configuration stage, conveyor wear accelerates and feed intervals lengthen over time. Similarly, the automatic stacker must clear finished pallets before the next mould release. Any mismatch shows up as press idle time that accumulates across a shift [NEED_CITE: common causes of throughput loss in concrete block plants].
Reading the Numbers Behind the Press
Platform vibration at 4600 r/min combined with 16 MPa rated hydraulic pressure drives compaction density — both forces must match the buyer’s mix design and local aggregate gradation. A 35.5 kN vibration force calibrated for one sand-to-stone ratio may produce under-compacted blocks if the aggregate source changes. The 25.7 kW total power rating covers the press alone; the full line draws additional load from the mixer, conveyor, batching plant and stacker motors. Pallet size at 900 × 500 × 25 mm determines the curing rack footprint and must align with the forklift and curing space the buyer already has on site. Mould changeover between hollow, solid and paving formats is supported by the exchangeable mould system, but swap time must be factored into daily output planning.
The Cost of Stations That Do Not Talk to Each Other
When the batching plant delivers a mix that differs from what the mould was designed for, block edges chip during demoulding and pallet damage increases. If the automatic pallet feeder is rated for a lighter pallet than the buyer’s curing racks require, pallet warping leads to uneven blocks and rising rejection counts. These issues surface weeks after installation, long enough for the buyer to assume the problem is operator error rather than a configuration gap [NEED_CITE: field reports on block quality inconsistency from mismatched line components].
Why Source the Full Line from One Configuration Point
Block machinery is the single focus here, so the QT4-15A press, mould, pallet and handling stations are specified as one matched system rather than assembled from separate suppliers. The line configuration is set against the buyer’s actual mix design, local aggregate and target block format instead of a catalogue default. Mould design covers the formats the buyer’s market actually sells, with custom drawings available. Automation level is selectable, allowing a buyer to begin with the stations included here and add further handling later. Installation and commissioning support covers the full line with operator training at the buyer’s site.
Documentation & Verification
- Line layout and capacity calculation stating which block format each output figure assumes
- Machine specification sheet with hydraulic and electrical schematics for the 25.7 kW press
- Mould drawing and format list for hollow, solid and paving block on 900 × 500 mm pallet
- Voltage and PLC display language confirmation before production begins
- Factory test record showing press cycle timed against full line stations
- Packing photographs and customs documentation support for container loading
Installation, Commissioning & Support
- Foundation plan sized to the 7100 × 1700 × 2610 mm press footprint and vibration isolation requirements
- 380V 3-phase 50Hz dedicated power circuit confirmed for total line load including mixer and stacker
- Full line arrives dismantled for 20 ft container loading with reassembly supervised on site
- First production run supervised with molding cycle and station timing verified against target block format
- Operator training covers mould change, pallet handling, batching adjustment and daily maintenance
- Wear parts list and hydraulic seal kit provided with recommended replacement intervals
What to Share When Requesting a Line Quote
Provide the block formats your market sells, the daily volume you need for each format, and the aggregate and cement sources available locally. Include your site voltage, frequency, and preferred control language, along with curing area dimensions and the forklift you plan to use for pallet handling.
Frequently Asked Questions
Q: How is daily output calculated for this line and which block format does it assume?
A: The 15–20 s molding cycle is measured with a specific block format and mix. Daily output is calculated by multiplying confirmed cycles per hour by shift hours, minus mould change and maintenance intervals. The capacity document states the format and pallet load assumed so you can compare against your own product mix.
Q: How do line station cycle times align so the press is not left waiting?
A: Each station — batching, mixing, conveying, pallet feeding, stacking — is specified so its complete movement finishes within the press molding cycle. The line layout document maps every station interval against the 15–20 s press window to show where buffers exist and where timing is tight.
Q: What pallet size does the line require and does it fit my existing curing area?
A: The line runs on 900 × 500 × 25 mm pallets. Before confirmation, we review your curing rack dimensions, curing yard footprint and existing forklift capacity to verify the pallet specification matches your handling setup without requiring yard modifications.
Q: How are voltage, frequency and PLC display language confirmed before shipment?
A: These are locked in writing during the quotation stage. The motor voltage is configurable from the default 380V 3-phase 50Hz to your local supply, and the PLC display language is set to match your operators before the control panel leaves the factory.
Q: What supporting equipment is included in the line quotation and what is not?
A: The quotation covers the press, mixer, belt conveyor, automatic stacker, automatic pallet feeder, batching plant and cement silo. Items outside this list — such as curing racks, forklifts, water supply and foundation works — are identified in the line layout so there are no gaps when the line arrives.
