QTJ4-35 Stationary Block Making Machine | Complete Line

Balanced line output — every station from mixer to curing rack is timed against the QTJ4-35 host cycle so the press never idles waiting for material or pallets.

Technical Specifications

Application Suitability

What the Quoted Daily Output Actually Assumes

A capacity figure only matters when the block format behind it is named.

Many quotations list a single daily number without stating which block size, wall thickness or mix design produced it. I have walked onto sites where the buyer expected a certain throughput on hollow blocks but the quoted number was calculated on thin solid pavers — a format that cycles faster and uses far less material per piece. The stationary block making machine production line then disappoints before the first week is over, not because the press underperforms but because the expectation was never anchored to the right format [NEED_CITE: capacity calculation assumptions in block machine quotations].

Station-by-Station Timing on a Small Line

The host press completes a cycle every 35 seconds. That means the mixer must discharge a fresh batch within roughly the same window, and the belt conveyor must move that batch into the host hopper before the next press stroke. With the 5.5 kW mixer and 0.75 kW conveyor matched to the QTJ4-35, each station is sized so the press does not sit idle. When any upstream station lags, the stationary block making machine production line loses cycles that cannot be recovered later in the shift.

Pallet Flow and Curing Area Matching

The 850 × 450 mm pallet dictates how many wet blocks move to the curing rack per cycle and how the forklift must be configured to handle them. If the curing area uses racking designed for a different pallet footprint, the operator either wastes floor space or stacks blocks by hand on the ground — exactly the bottleneck that defeats the purpose of buying a line. Pallet material also matters: bamboo pallets absorb moisture and warp in humid curing rooms, while PVC pallets hold flat but cost more upfront [NEED_CITE: pallet material selection for block curing environments].

Reading the Key Numbers Behind the Press

The 32 kN platform vibration force works together with the manual mould closure to compact the mix. On a stationary block machine, vibration alone is not enough; the operator must ensure the mould is fully seated and the mix moisture is within range so that the vibration energy transmits through the entire cavity. Too dry a mix and the block crumbles on demoulding; too wet and the block slumps before it reaches the curing rack.

The 9.7 kW host power covers the vibration motor and the electric brake system. Adding the 5.5 kW mixer and 0.75 kW conveyor brings the total connected load to roughly 16 kW, which must be checked against the site transformer capacity and the voltage drop over the cable run from the main panel. A voltage dip under load will reduce vibration amplitude and weaken block density — a problem that only shows up when the line is running at full speed [NEED_CITE: voltage drop effects on vibration motor performance].

The 35-second moulding cycle translates differently depending on the format: four hollow blocks per cycle means a theoretical pace that drops noticeably when the operator switches to a six-cavity wall block mould, because loading time and demoulding care both increase.

The Cost of Overlooking Station Balance

When a mixer discharges too slowly, the press waits. That idle time compounds across an eight-hour shift into thousands of lost blocks. I have seen lines where the belt conveyor was swapped for a cheaper, shorter unit that could not keep pace, and the operator ended up shovelling material by hand just to keep the press fed. These are not machine failures — they are configuration failures that show up as lost revenue from day one [NEED_CITE: common block line configuration mismatches reported by plant operators].

Why Sourcing the Full Line Together Matters

Block machinery is our single focus, so the QTJ4-35 host, mould, pallet, conveyor and mixer are specified as one matched system rather than assembled from separate suppliers. Configuration is set against your actual mix design, local aggregate and target block format instead of a catalogue default. Mould design covers the formats your market actually sells, with custom drawings available when standard options fall short. The automation level is selectable: a buyer can start with manual pallet handling and add stacking equipment later without replacing the press. Installation support includes operator training so the crew understands not just button sequences but why station timing matters.

Documentation & Verification

• Line layout drawing with capacity calculation stating the exact block format assumed
• Machine specification sheet covering host, mixer and conveyor power ratings
• Mould drawing and format list for every block size included in the order
• Pallet specification matched to your curing rack dimensions and forklift capacity
• Voltage, frequency and control language confirmed in writing before production
• Factory test record on your target block format before dispatch

Installation, Commissioning & Support

• Foundation pad sized to the 2050 × 1660 mm host footprint with level tolerance noted
• Dedicated circuit rated for the combined 16 kW line load with voltage and frequency confirmed
• Host, conveyor and mixer shipped in dismantled state with assembly sequence documented
• First-run parameter setting for vibration time and mixer discharge matched to your mix
• Operator training on manual mould change, pallet feeding and electric brake safety checks
• Wear parts list covering vibration springs, mould liners and conveyor belt splices

What to Include in Your Inquiry

Send us the block formats your market demands, the daily volume you need per format and the raw materials available locally. Tell us the voltage and frequency at your site, the control language your operators read and whether you already have curing racks and forklifts so we can match the pallet size. If you are adding this line alongside existing equipment, share the upstream and downstream layout so the stationary block making machine production line integrates without disrupting your current flow.

Frequently Asked Questions

Q: How is the 3,200 pcs/day capacity calculated and which block format does it assume?
A: The figure is published without a stated format or mix assumption. Before ordering, we calculate capacity specifically for your target block size, wall thickness and mix design, then document the assumed cycle breakdown — loading, vibration, demoulding and pallet transfer — so you know exactly what throughput to plan around.

Q: What supporting equipment is included and what is left to the buyer?
A: The standard line package includes the QTJ4-35 host, a 6 m belt conveyor and a 5.5 kW mixer. Pallets, curing racks, forklifts and water supply are typically buyer-provided. We specify pallet dimensions and curing rack spacing so your existing infrastructure aligns with the line output.

Q: How must the 850 × 450 mm pallet match my curing area and forklift?
A: Your curing rack slots must accept at least 850 × 450 mm pallets with clearance for wet block height. Your forklift fork width and lifting capacity must handle a loaded pallet of blocks. We ask for rack drawings and forklift model before finalising the pallet material and quantity in the quotation.

Q: How do mixer discharge, conveyor feed and press cycle stay in sync?
A: The 5.5 kW mixer batch size is chosen so one discharge fills one press cycle. The 0.75 kW conveyor speed is set to move that batch within the 35-second press window. If any station falls behind, the line capacity drops — which is why we size all three together rather than quoting the press alone.