Matched Line Stations — Every station around the QT4-18 press is configured so cycle times align, meaning the mixer, conveyor, host press, automatic stacker and pallet trolleys work as one system rather than a collection of independent machines.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT4-18 |
| Product Type | Hydraulic Concrete Block Making Machine |
| Overall Dimensions (L×W×H) | 3900×1600×2300 mm |
| Molding Cycle | 15–25 s |
| Vibration Force (Exciting Power) | 40–50 kN |
| Rated Power | 24 kW |
| Mixer Model | JQ350 |
| Pallet Size | 850×550×25 mm |
| Net Weight | 3 T |
| Automation Level | Semi-automatic with automatic stacker |
| Applied Products | Paver, solid block, hollow block, curbstone |
| Raw Materials | Crushed stones, sand, cement, dust, fly ash |
| Output Capacity (Hollow Block 400×200×200 mm) | 1200–1680 pcs/hr (9600–13440 pcs/8hr) |
| Output Capacity (Hollow Block 400×150×200 mm) | 1800–2400 pcs/hr (14400–19200 pcs/8hr) |
| Output Capacity (Solid Brick 240×115×53 mm) | 3240 pcs/hr (16200–19440 pcs/8hr) |
| Assembly State | Nude packed in 20GP container |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production for wall construction | Crushed stone, sand, cement mix on 850×550 mm pallets |
| Solid brick manufacturing for load-bearing structures | Cement and fly ash blends at 15–20 s molding cycle |
| Paver production for walkways and driveways | Stone dust and aggregate with hydraulic compression |
| Curbstone forming for road and pavement edges | Coarse aggregate mix requiring 40–50 kN vibration force |
| On-site block production for housing projects | Local aggregate and cement with JQ350 mixer batching |
Why "Pieces per Hour" Means Nothing Without the Rest of the block production line equipment
A press that outpaces its own conveyor and stacker will spend every hour idle for twenty minutes, waiting for the next pallet to arrive.
I have watched plant owners quote themselves a daily target based on the host press cycle time alone, only to discover the mixer cannot feed fast enough or the automatic stacker jams at the discharge end. The block production line equipment must be specified as a connected chain. When one station falls behind, the entire line bottlenecks at the slowest link, and the press operator ends up manually clearing pallets just to keep the machine running [NEED_CITE: common causes of block line throughput loss].
How Line Stations Connect Around the QT4-18 Press
The JQ350 mixer batches raw material and discharges onto a belt conveyor that feeds the QT4-18 host press hopper at a rate matched to the 15–25 s molding cycle. Once the block is formed on the pallet, the automatic stacker lifts and aligns the loaded pallet before a trolley transfers it to the curing area. If the conveyor throughput or stacker speed is not calculated against the press cycle, the block production line equipment operates with a built-in bottleneck that no amount of operator effort can remove.
Where Cycle Time Mismatches Hide in the block production line equipment Layout
A 25-second molding cycle sounds fast until you account for pallet return travel time, stacker lifting speed, and the time a forklift needs to clear the curing rack. I have seen lines where the pallet trolley was the right width but the wrong length for the buyer’s existing curing racks, forcing the plant to hand-carry wet blocks across the yard [NEED_CITE: pallet and curing rack compatibility standards]. Every station in the block production line equipment must share the same timing logic.
Reading the Specs That Actually Matter on Site
The vibration force rating of 40–50 kN works together with hydraulic pressure to determine block density and compressive strength. A high vibration force without sufficient hydraulic compression produces blocks that crumble at the edges, while excessive pressure without vibration leaves voids in the core. The 850×550×25 mm pallet size must match both the press mould area and the curing rack spacing the buyer already has on site. The 24 kW rated power determines the electrical supply requirement and cable sizing from the main distribution board to the press station.
The Hidden Cost of Leaving Stations Out of the Quotation
When a buyer receives a quotation for the host press alone, the missing stations do not disappear — they become manual labor. Pallets get carried by hand, stacking happens on the ground, and the curing area fills with uneven rows that topple in the wind. The block production line equipment quotation must account for every station from mixer discharge to cured product stacking, or the plant will absorb the gap in wages, breakage, and lost output [NEED_CITE: labor cost impact of incomplete block line automation].
Why Sourcing the Line as One System Matters
The QT4-18 press is configured alongside its JQ350 mixer, belt conveyor, automatic stacker and pallet trolleys so that each station’s capacity supports the next. The pallet size is chosen to match the buyer’s curing rack dimensions and existing forklift capacity, not pulled from a default catalog. Voltage, frequency and control language are confirmed before production so the line powers up correctly on arrival. Factory testing runs the full station chain under load, not just the host press in isolation. Wear parts lists and mould drawings ship with the line documentation, so the first replacement cycle does not halt production.
Documentation & Verification
- Line layout drawing showing station spacing and conveyor routing for your block format
- Capacity calculation sheet stating which hollow block size each output figure assumes
- Pallet specification matching your existing curing rack width and forklift load rating
- Hydraulic and electrical schematic with confirmed voltage and control language
- Factory test record with the full station chain running under load before dispatch
Installation, Commissioning & Support
- Foundation pad sized to the 3900×1600 mm press footprint with anchor bolt template
- Dedicated 24 kW power circuit with voltage and frequency confirmed before wiring
- Nude-packed press and stations assembled on site with station alignment verified
- First production run supervised to confirm mixer-to-stacker cycle time alignment
- Operator training on mould change procedure and vibration force adjustment
- Wear parts and spare pallet list provided with reorder quantities noted
What to Prepare Before You Request a Quotation
Tell me the block format you sell most, your target daily output, and the raw materials available locally. Share your curing area dimensions, existing forklift capacity, and the voltage and frequency at your site. If you already run a mixer or conveyor upstream, provide the model so the block production line equipment can be configured around it rather than duplicating what you have.
Frequently Asked Questions
Q: How are the mixer, conveyor and stacker cycle times matched to the QT4-18 press so the line does not bottleneck?
A: Each station is calculated against the 15–25 s molding cycle. The JQ350 mixer discharge rate, conveyor belt speed and stacker lifting interval are set so the press never waits for material or pallet clearance. If one station runs slower than the press, the entire line output drops to that station’s pace.
Q: What is included in the line quotation versus what the buyer must source locally?
A: The quotation covers the JQ350 mixer, belt conveyor, QT4-18 host press, automatic stacker, pallets and trolleys. The buyer typically provides the curing racks, forklift, water supply and electrical connection from the main panel to the line distribution board.
Q: How is pallet size and material chosen to match the buyer’s existing curing area and handling equipment?
A: The 850×550×25 mm pallet is specified after confirming the buyer’s curing rack spacing and forklift tine width. Using a pallet that does not fit the existing rack forces the plant to rebuild the curing area or handle blocks manually.
Q: Can the automation level be upgraded later from semi-automatic to fully automatic stacking and cubing?
A: The QT4-18 line can start with semi-automatic pallet handling and add a fully automatic cubing station later. The press control system and pallet conveyor are specified with future upgrade points so the upgrade does not require replacing the host press.
Q: What raw material feed configuration is needed for the buyer’s local aggregate and mix design?
A: The JQ350 mixer and feed hopper are configured after reviewing the buyer’s local aggregate size, moisture content and cement ratio. A mix designed for one region’s sand may not work with another region’s stone dust, so the feed configuration must match the material actually available on site.
