Cycle-Matched Line Design — every station upstream and downstream of the QT5-15 press is timed to its 15–20 second cycle so the press never waits on pallets or stacking.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT5-15 |
| Product Type | Automatic Hydraulic Concrete Block Making Machine |
| Overall Dimensions (L×W×H) | 7400×1950×2800 mm |
| Rated Pressure | 21 MPa |
| Main Vibration Form | Hydraulic platform vibration |
| Vibrating Frequency | 2800–4500 rolls/minute |
| Cycle Time | 15–20 seconds |
| Motors Power | 26.5 kW |
| Pallet Size | 1100×550 mm |
| Weight | 6 T |
| Voltage | Configurable to buyer’s site supply (confirm voltage, frequency and phase before order) |
| Control System | PLC with fault diagnosis and remote monitoring capability |
| Automation Level | Full automatic |
| Output Capacity | 7200–9600 pcs/8h based on 400×200×200mm block, 5 pcs/mould |
| Output Capacity | 23040–28800 pcs/8h based on 240×115×90mm brick, 16 pcs/mould |
| Output Capacity | 61440–70400 pcs/8h based on 400×115×53mm brick, 32 pcs/mould |
| PLC Display Language | Confirm before production |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production | Crushed stone, sand, cement and water mix for 400×200×200mm structural blocks |
| Standard brick production | Fine aggregate and cement blend for 240×115×90mm solid bricks |
| Paving brick production | Dense aggregate mix for interlocking and porous paver formats |
| Multicellular brick production | Lightweight aggregate blend for 400×115×53mm thin-format bricks |
What "7200 Blocks per Shift" Actually Requires from the Rest of the Line
The press cycle is only the starting point — daily output depends entirely on whether the feeder, mixer, pallet conveyor and stacker keep the same tempo.
When a quotation lists a single output figure for an automatic block making machine production line, it almost never breaks down which block format that number assumes. I have walked into plants where the press sat idle for seconds every cycle because the pallet feeder could not deliver fast enough, or the stacker jammed waiting for a full layer. The 7200–9600 pieces per 8-hour shift figure for the QT5-15 is based on 400×200×200mm hollow blocks at five per mould. Switch to a different format and the cycle count changes, and so does the demand on every supporting station. [NEED_CITE: block production line cycle matching principles]
How Stations Connect Around the Press
The QT5-15 sets a 15–20 second tempo that every upstream and downstream station must match. The raw material feeder delivers aggregate to the mixer at a rate calculated from the mould volume and cycle count, not a generic throughput figure. The pallet feeder pushes a fresh 1100×550 mm pallet into position before the press completes its vibration and pressure hold. If any station lags, the press enters a wait state and the automatic block making machine production line loses cycles that cannot be recovered later in the shift.
Where the Line Breaks Down First
In my experience planning lines around this class of press, the pallet return conveyor is usually the first bottleneck. Wet blocks on heavy pallets travel through the curing rack system, and if the return loop is undersized or the forklift cannot clear cured pallets quickly enough, the pallet feeder runs dry. The PLC fault diagnosis on the QT5-15 will flag a pallet-missing alarm, but it cannot create pallets that are not there. I always calculate the pallet circulation count against the curing time and rack capacity before finalising the conveyor length. [NEED_CITE: pallet circulation planning for block curing systems]
Reading the Numbers Behind the Press
The 21 MPa rated pressure and hydraulic platform vibration at 2800–4500 rolls per minute work together to compact the mix into a dense block. Higher vibration frequency suits fine-aggregate paving bricks where surface finish matters, while lower frequency with sustained pressure suits larger hollow blocks where wall integrity is the priority. The 26.5 kW motor package drives both the hydraulic pump and the vibration system, so the electrical supply must be stable under continuous start-stop loading. The 1100×550 mm pallet size must align with the curing rack slot width and the forklift tine spacing already on site — a mismatch here forces a full rack replacement or a pallet redesign before the line can run.
When Supporting Equipment Is Not in the Quotation
A press quoted without its pallet handling, stacking and curing rack system leaves the buyer assembling the rest of the automatic block making machine production line from separate suppliers. The result is a collection of stations that each run at their own speed. I have seen stackers that could not accept pallets at full press speed, forcing the operator to run the QT5-15 below its cycle rate just to keep the end of the line from jamming. The hidden cost is not the missing equipment — it is the throughput lost every day the line runs unbalanced. [NEED_CITE: hidden costs of unmatched block line stations]
Why the Line Is Specified as One System Here
Block machinery is the single focus of this workshop, so the QT5-15 press, its moulds, pallets and handling equipment are specified together rather than sourced separately. The line layout is drawn against the buyer’s actual mix design and target block format, with a capacity calculation stated per format, not a single catalogue number. Pallet size is confirmed against the buyer’s existing curing area and forklift before production begins. Automation level is selectable, allowing a buyer to start with semi-automatic pallet handling and add a stacker later. Voltage, frequency and PLC display language are locked in before the machine leaves the factory, so commissioning is not delayed by a language mismatch on the control screen.
Documentation & Verification
- Line layout with capacity calculation stated per block format for the QT5-15
- Hydraulic and electrical schematic for integration with existing plant utilities
- Pallet specification matched to curing rack dimensions and forklift capacity
- Factory test record on the buyer’s target block format before dispatch
- Voltage, frequency and PLC language confirmation sheet signed before production
Installation, Commissioning & Support
- Foundation plan based on the QT5-15 footprint of 7400×1950 mm with vibration isolation pads
- Dedicated circuit for the 26.5 kW motor package with voltage and phase confirmed to site supply
- Pallet conveyor and stacker aligned to press discharge height during on-site assembly
- PLC parameter setting for cycle time, vibration frequency and pressure matched to buyer’s mix
- Operator training on mould change, fault diagnosis display and daily lubrication points
- Wear parts list covering hydraulic seals, vibration springs and mould liner plates
Before You Send an Inquiry
Share the block formats your market actually sells and the daily volume you need per format, not a single total figure. Confirm your site voltage, frequency and the language your operators read on a control screen. If you already have curing racks and forklifts on site, send the rack slot dimensions and forklift tine spacing so the pallet system is sized to match.
Frequently Asked Questions
Q: How is the 7200–9600 piece daily output verified for hollow block?
A: That figure assumes 400×200×200mm hollow blocks at five pieces per mould, with a 15–20 second cycle sustained across an eight-hour shift. Verification requires a factory test run on the buyer’s actual mix design, recording cycle count and block weight per pallet to confirm density and output before the machine ships.
Q: Which stations must match the QT5-15 cycle time?
A: The raw material feeder, mixer discharge, pallet feeder, stacker and pallet return conveyor must all complete their task within the 15–20 second press cycle. Any station that takes longer forces the press into a wait state, reducing daily output below the calculated figure.
Q: Is pallet handling and stacking included in the quotation?
A: The QT5-15 is specified as part of a complete automatic block making machine production line. Pallet feeding, automatic stacking and curing rack handling are included in the line layout and quotation, not left for the buyer to source separately after delivery.
Q: How is pallet size coordinated with existing equipment?
A: The 1100×550 mm pallet dimension is checked against the buyer’s curing rack slot width and forklift tine spacing before production. If the existing rack or forklift does not match, the pallet size is adjusted or a rack modification plan is provided with the line layout.
Q: What voltage and language settings are confirmed before shipping?
A: Voltage, frequency and phase are confirmed in writing during the quotation stage and set on the PLC and motor wiring before the factory test. The PLC display language is agreed at the same point so the operator sees familiar text from the first day of commissioning.
