QT4-15 Automatic Block Making Machine | Complete Line

Integrated Line Matching — the QT4-15 press is specified only after every upstream and downstream station is timed against its cycle, so no single machine waits for the next.

Technical Specifications

Application Suitability

Why Cycle Time Matching Matters More Than Press Speed

A press that cycles faster than its mixer can discharge will spend most of every shift standing still.

In my early days sourcing equipment for a block plant in Dubai, I watched a line with a fast press and an undersized mixer produce barely sixty percent of the nameplate output. The press finished each cycle, then waited for the next batch of wet mix. The mixer was simply not keeping up. That mismatch was invisible on the quotation because capacity was stated as cycles per hour without naming which block format or which mixer was feeding the hopper. When buyers evaluate an automatic block making machine production line, the real question is whether every station — batching, mixing, pallet feeding, pressing, stacking — moves at the same rhythm [NEED_CITE: block production line station matching principles].

Matching the JS500 Mixer to the Press Cycle

The JS500 mixer paired with the QT4-15 must discharge a full batch within the window the press leaves between cycles. If the press consumes one batch every twenty seconds but the mixer needs longer to blend and tip, the press sits idle. We verify this timing before the line is built, not after it arrives. If the numbers do not align, we change the mixer size rather than accept the gap. This is the core of any automatic block making machine production line — the stations must talk to each other through timing, not just through conveyor belts.

Pallet Circulation and Curing Rack Alignment

The 1020×850×40 mm pallet must travel from the press to the stacking point, then onto a curing rack, and eventually return to the press empty. If the curing yard uses a forklift with a different fork width or the rack spacing does not match the pallet dimension, the whole loop breaks down. Buyers who already have a curing area in place need to share those dimensions early. We then confirm whether the standard pallet fits or a different size should be specified before production starts [NEED_CITE: pallet sizing and curing yard compatibility in block production].

Reading the Numbers Behind the Specifications

The QT4-15 runs at 27.5 kW rated power, which covers vibration, hydraulic pump and conveyor drives. The 60 kN vibration force works together with hydraulic pressure to compact the concrete mix into the mould cavity; too little vibration leaves voids, while too much force without matching hydraulic hold can crack green blocks. Pallet size at 1020×850×40 mm determines how many blocks sit on each board and how the boards stack in the curing area. Voltage is listed as 380V or custom — confirming the exact frequency and phase at the buyer’s site avoids rewiring after the containers arrive. The PLC control language must also be set before shipment so the operator reads alarms and cycle counts in a familiar language on day one.

What Happens When Line Stations Are Not Balanced

When a stacker is left out of the quotation, workers carry every pallet off the line by hand. Output slows to the pace of the slowest person, and the press cycle time no longer matters. When voltage is not confirmed, the control panel may arrive with a display in a language the operator cannot read, delaying commissioning while a translator is found. When mould change procedure is not discussed, a buyer who paid for format flexibility may spend half a shift swapping dies — losing the very versatility the machine was bought to deliver [NEED_CITE: common block line commissioning delays from unconfirmed utilities].

Why Buyers Source This Line Through Us

Block machinery is our single focus, so the QT4-15, its JS500 mixer, pallet specification and handling equipment are quoted as one matched system rather than assembled from separate vendors. We set configuration against the buyer’s actual mix design and local aggregate, not a catalogue default. Moulds are designed for the formats the buyer’s market actually sells, and custom drawings are accepted. Automation level can start semi-automatic and grow later, so investment scales with order volume. Installation support includes operator training so the line runs at its verified cycle time from the first week.

Documentation & Verification

• Line layout drawing showing each station position and conveyor length for the QT4-15 setup
• Capacity calculation sheet stating which block format each daily output figure assumes
• Pallet specification with material grade, thickness and moisture tolerance for 1020×850×40 mm boards
• Hydraulic and electrical schematic with valve and sensor reference numbers
• Voltage, frequency and PLC display language confirmation signed before production
• Factory test record measuring actual cycle time per block format with packing photographs

Installation, Commissioning & Support

• Foundation plan sized for the 7100×1600 mm footprint and 5800 kg static load of the QT4-15
• Dedicated 27.5 kW circuit with voltage and frequency matching the confirmed PLC configuration
• Assembly sequence covering main frame, hydraulic station, pallet feeder and mixer connection
• First-run parameter setting for vibration force and hydraulic pressure against the buyer’s mix
• Operator training covering PLC navigation, mould change procedure and daily greasing points
• Wear parts list identifying hydraulic seals, vibration springs and pallet return rollers

Before You Send the Inquiry

Tell us which block format sells in your market and what daily volume you need to hit. Share your local aggregate type and any existing curing racks or forklifts so we can check pallet compatibility. Confirm the voltage and frequency at your site along with the language your operators prefer on the PLC display. With those details we can draft a line layout and a capacity calculation that match your actual production target.

Frequently Asked Questions

Q: Which stations are included in the QT4-15 line quotation and which are buyer-supplied?
A: Our standard quotation covers the press, JS500 mixer, pallet feeder and electrical control. Batching silos, curing racks and forklifts are typically buyer-supplied. We list every included and excluded station in the line layout drawing so there are no surprises when containers arrive on site.

Q: How do you verify that the mixer keeps pace with the press?
A: We calculate the JS500 batch discharge time against the QT4-15 cycle time for the buyer’s target block format. If the mixer cannot refill the hopper within the press window, we move to a larger mixer model before finalising the quotation rather than accepting idle press time.

Q: Is the 1020×850×40 mm pallet compatible with my existing curing yard?
A: Share your curing rack spacing and forklift fork width so we can confirm fit. If the standard pallet does not match, we adjust the pallet dimension and the press platen accordingly before production so the boards circulate without manual intervention.

Q: What voltage and PLC language will the line ship with?
A: Voltage, frequency and PLC display language are confirmed in writing before the QT4-15 enters production. This avoids rewiring or reprogramming after arrival and lets the operator read cycle data in a familiar language from day one.

Q: Can the line be upgraded from semi-automatic pallet handling to full stacking later?
A: Yes. The QT4-15 control system allows adding an automatic stacker and cubing unit once production volume justifies the investment. We plan the electrical and mechanical interfaces during the initial build so the upgrade bolts on without rewiring the main panel.