Matched Line Integration — the QT4-15 hydraulic automatic block making machine production line is configured so raw material feeding, mixing, pallet circulation, stacking and curing all share the same cycle calculation, preventing the press from idling while upstream or downstream stations catch up.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT4-15 |
| Product Type | Hydraulic Automatic Block Making Machine |
| Molding Cycle | 15–30 s |
| Pallet Size | 900 × 500 mm |
| Vibration Type | Platform vibration |
| Vibration Frequency | 50–70 Hz |
| Product Height Range | 50–220 mm |
| Overall Power | 24.5 kW |
| Demolding Method | Hydraulic |
| Control System | PLC controlled |
| Automation Level | Automatic (pallet feeding, material feeding, vibrating, demoulding integrated) |
| Output Capacity (400×200×200 mm hollow block, 4 pcs/mould) | 900–1,200 pcs/h |
| Output Capacity (400×150×200 mm hollow block, 5 pcs/mould) | 1,080–1,440 pcs/h |
| Output Capacity (400×100×200 mm hollow block, 8 pcs/mould) | 1,440–1,920 pcs/h |
| Output Capacity (200×100×60 mm paver, 16 pcs/mould) | 2,880–3,840 pcs/h |
| Output Capacity (240×115×53 mm solid brick, 28 pcs/mould) | 5,930–6,720 pcs/h |
| Block Compressive Strength | ≥15 MPa (source value — verify against manufacturer catalog) |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production for load-bearing walls | Fly ash, slag, crushed stone, sand, cement and water mixes |
| Solid brick production for partition and facing work | Sand-cement or fly ash-cement blends, 240×115×53 mm format |
| Interlocking paver production for walkways and yards | Crushed stone and cement mixes, 200×100×60 mm format |
| Kerbstone and porous brick for municipal projects | Coarse aggregate blends compatible with platform vibration |
What the Quoted Hourly Capacity Actually Assumes
Every output figure on this page is tied to a specific block format, mould cavity count and cycle window — not a single peak number.
When a brochure quotes one capacity for a hydraulic automatic block making machine production line without naming the block, buyers routinely discover on commissioning day that their real daily volume sits well below the number they planned around. I have walked through plants where the mixer could not keep up with a 15-second cycle, and others where the stacking crew could not clear pallets fast enough, leaving the press waiting. [NEED_CITE: typical discrepancies between quoted and actual block plant output]. The QT4-15 table above pairs each format with its mould cavity count so you can plan the mixer batch size, pallet return speed and curing rack capacity around the format you will actually sell.
Where the Press Fits Inside the Full Line
The QT4-15 sits at the centre of the hydraulic automatic block making machine production line, but its 15–30 second moulding cycle only sets the pace. Upstream, the batching and mixing station must deliver a consistent charge within that same window; downstream, the pallet return conveyor and stacking station must clear the cured pallet before the next cycle fires. If any station runs slower, the press waits. Specifying the line as one system — rather than sourcing the press, mixer and stacker from separate vendors — is how cycle alignment actually happens.
Pallet Circulation as the Line’s Backbone
Every pallet that leaves the press carrying fresh blocks must travel through the stacking rack, the curing area and back to the press within the cycle time budget. The QT4-15 uses a 900×500 mm pallet as its datum dimension. That single measurement dictates the spacing of curing racks, the fork pocket width on your existing forklift and the stacking height the automatic stacker can reach. [NEED_CITE: pallet sizing standards for stationary block plants]. When the pallet size is confirmed before the line ships, the curing area layout and material handling equipment arrive on site ready to work.
Reading the Specs That Shape Daily Output
Platform vibration at 50–70 Hz compacts the mix from below, while hydraulic pressure locks the mould head in place during the cycle; together they determine the density and compressive strength of every block. The QT4-15’s product height range of 50–220 mm means a single press can handle everything from a thin paver to a tall hollow block, provided the mould is changed. The PLC-controlled sequence ties material dosing, vibration duration and hydraulic demoulding into one automatic loop, so the operator only monitors rather than times each step manually. Overall power of 24.5 kW must be matched by a dedicated circuit on site, and the voltage and frequency need to be confirmed before the control panel leaves the factory so the PLC display and motor wiring arrive correct for your grid. [NEED_CITE: voltage and frequency standards by export market].
The Cost of Skipping Line-Wide Cycle Planning
When the mixer is undersized for a 15-second press cycle, the line effectively runs at the mixer’s pace, and daily output drops without any alarm sounding. If the pallet return path is longer than the curing area allows, pallets queue on the floor and blocks cure in the wrong position, weakening the final product. [NEED_CITE: common causes of block strength inconsistency in stationary plants]. These are not press faults — they are gaps between stations that a single-machine quotation does not reveal until commissioning.
Why Buyers Place the Full Line Order Here
Block machinery is our only product category, so the QT4-15 press, its moulds, pallets and handling equipment are specified as one matched set rather than assembled from separate suppliers. We configure the line against your actual mix design and local aggregate, not a catalogue default, which keeps block strength consistent from the first pallet to the last. Moulds for the formats your market actually sells — including custom drawings — are designed in-house so changeover fits the shift schedule. Automation level is selectable, letting you start with semi-automatic pallet handling and add stacking later. Installation, commissioning and operator training are included so the crew running the line on day one already knows the PLC interface and the maintenance schedule.
Documentation & Verification
- Line layout showing the block format assumed for every capacity figure on the drawing
- Machine specification sheet listing QT4-15 power, cycle time and pallet datum dimensions
- Mould drawing and format list covering every cavity you ordered, with changeover procedure
- Hydraulic and electrical schematic so your site electrician can plan panel and cabling work
- Factory test record run on your target block format before the press is dismantled for shipment
Installation, Commissioning & Support
- Foundation plan matching the QT4-15 footprint and 24.5 kW power requirement at your local voltage
- Dedicated circuit and breaker sizing confirmed before the control panel ships
- Press dismantled into container-load sections; reassembly supervised on site by our technician
- PLC display language set to your operator preference before factory testing begins
- Mould change procedure trained on your actual format so the crew can swap cavities within one shift
- Wear parts list with hydraulic seal and vibration motor part numbers for local sourcing or reorder
What We Need to Size Your Line
Send us the block format you sell most, the daily volume you need to hit and the raw materials available locally — fly ash, sand, crushed stone or a blend. Tell us the voltage and frequency on your site, the language you want on the PLC screen, and whether your curing area and forklift are already in place. With that, we can return a line layout that matches every station to the QT4-15 cycle.
Frequently Asked Questions
Q: How are upstream feeding and downstream stacking cycle times matched to the QT4-15 press so no station bottlenecks the line?
A: We calculate the press cycle for your target block format, then size the mixer batch delivery and pallet return conveyor to that same window. The stacking station is rated to clear pallets within the moulding cycle, so the press never idles waiting for upstream material or downstream space.
Q: What pallet size and material does the line assume, and how does it connect to my existing curing racks and forklift?
A: The QT4-15 runs a 900×500 mm pallet as standard. We confirm your curing rack spacing and forklift fork width before shipment so the pallets, racks and handling equipment arrive compatible and no on-site modification is required.
Q: Which block formats can share the same pallet, and which require a separate line branch?
A: Hollow blocks, pavers and solid bricks within the 50–220 mm height range all ride the same 900×500 mm pallet. Very large kerbstones may need a wider pallet and a separate curing branch, which we flag during line layout.
Q: How is voltage, frequency and PLC language confirmed before the line leaves the factory?
A: We collect your site voltage and operator language preference at the order stage and print them on the electrical schematic. The control panel is wired and tested at that voltage before dismantling, so commissioning on site is a connection task, not a rewiring task.
Q: What is included in the line quotation versus what the buyer must supply on site?
A: The quotation covers the QT4-15 press, moulds, pallets, feeding, mixing, stacking and curing rack handling equipment. The buyer supplies the concrete foundation, water supply, compressed air if required, and the curing area structure according to our foundation and layout drawings.
