Matched Line Timing — the QT4-25 press, pallet feeder, and stacker are configured as one synchronized circuit so the 25-second molding cycle is never broken by a waiting station.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT4-25 |
| Product Type | Automatic Concrete Block Making Machine |
| Control System | PLC controlled, fully automatic |
| Machine Power | 16.58 kW |
| Molding Cycle | 25 seconds |
| Output Capacity | 4600 pcs/8hours (basis not stated in source — confirm block format) |
| Machine Weight | 5000 KGS |
| Overall Size | 6400×1500×2700 mm |
| Pallet Size | 850×480 mm |
| Vibration System | Vibration motor with large vibration box |
| Automation Level | Full automatic — pallet feeding, material feeding/scraping, block stacking |
| Motor Brand | Siemens |
| Frame | Thickened steel construction |
| Raw Material | Concrete, sand, cement, fly ash, crushed stone, lime, water |
| Voltage | Configurable to buyer’s local voltage |
| Warranty | One year |
Application Suitability
| Application | Material or Output |
|---|---|
| Medium-sized block factory | Hollow blocks from crushed stone, cement, and sand |
| Paver production | Interlocking paver stones from fine aggregate and cement |
| Solid brick manufacturing | Solid bricks from fly ash, lime, and sand |
| On-site contractor production | Mixed formats for housing project supply |
What "4600 Pieces per Shift" Actually Means for Your Line
Capacity only holds when every station upstream and downstream keeps pace with the press.
I spent years on the assembly floor before moving into line planning, and the most common call I get from buyers is about a press that sits idle half the shift. The automatic block machine production line is rated at 4600 pieces per 8-hour shift, but that figure assumes a specific block format and uninterrupted material flow. When the mixer delivers a batch late or the pallet feeder jams, the 25-second cycle breaks and daily output drops noticeably. The real question is whether the feeding, stacking, and curing stations around the press are timed to the same heartbeat [NEED_CITE: line synchronization standards for concrete block plants].
How the Stations Connect Around the Press
The automatic block machine production line starts with raw material feeding and mixing that must deliver a fresh batch before the hopper runs empty. The PLC controls the material feed, scraping, and pallet advance so each movement is triggered by the press position rather than a fixed timer. This matters because a timer-based system keeps feeding even when the press is mid-cycle, causing spillage and material waste.
Where Bottlenecks Hide in a Block Line
The press itself is rarely the slowest station. More often, the pallet return conveyor or the block stacker cannot clear finished product fast enough, forcing the press to pause. On this automatic block machine production line, the stacker is specified to lift and index within the 25-second window so the next pallet slides in without delay. If your curing rack layout requires a forklift to move stacked cubes manually, that step becomes the new constraint [NEED_CITE: curing rack logistics in block production].
Reading the Specs That Matter
The 16.58 kW total machine power covers the vibration motor, feed system, and stacker drives together. The large vibration box delivers compaction force through mechanical vibration rather than hydraulic pressure, which means block density depends heavily on your mix design and aggregate gradation. The 850×480 mm pallet size determines how many blocks form per cycle and must match the rack spacing in your curing area. A Siemens motor on the main drive reduces the risk of winding failure under continuous vibration load, and the thickened steel frame absorbs the vibration energy cycle after cycle without joint fatigue.
The Cost of Mismatched Line Equipment
Buyers who source the press from one supplier and the stacker from another often discover the communication protocol does not match. The PLC on the press expects a handshake signal the third-party stacker cannot send, so operators run both machines in manual mode. Daily output then depends on the operator’s reflexes rather than the programmed cycle, and block quality varies from pallet to pallet [NEED_CITE: PLC interoperability in concrete machinery]. Voltage and frequency mismatches compound the problem — a 50 Hz motor running on 60 Hz power spins faster, throwing off the vibration timing and producing weaker blocks.
Why Source the Full Line Here
Block machinery is our single focus, so the QT4-25 press, pallet feeder, and stacker leave the factory tested as one system. We set the configuration against your actual mix design and local aggregate, not a catalogue default. Pallet size and material are confirmed against your existing curing racks and forklift capacity before production starts. Voltage, frequency, and PLC display language are locked in during the order stage so commissioning is not delayed by a wrong motor or an unreadable screen. Mould design covers the block formats your market actually sells, with custom drawings when standard moulds do not fit.
Documentation & Verification
- Line layout drawing showing station spacing and pallet flow path for the QT4-25
- Capacity calculation stating the block format behind the 4600-piece figure
- Voltage and PLC language confirmation sheet signed before production
- Factory test record covering full-line cycle synchronization
- Pallet specification matched to your curing rack and forklift
- Operation and maintenance manual in your operator language
Installation, Commissioning & Support
- Foundation plan accounting for the 5000 KGS machine weight and vibration load
- Power supply spec for 16.58 kW total draw on your local voltage and frequency
- Dismantling sequence for container loading and reassembly on site
- First-run parameter tuning for your specific mix and block format
- Operator training covering PLC fault codes and mould change procedure
- Wear parts list with reorder codes for vibration box liners and scraper blades
What We Need to Configure Your Line
Send your target block format, daily output requirement, and local raw material availability. Include your workshop dimensions, existing curing rack layout, and the forklift capacity you already have on site. Confirm your local voltage, frequency, and preferred PLC display language so the electrical package is built correctly before shipment.
Frequently Asked Questions
Q: Which block format does the 4600-piece capacity assume?
A: That figure is tied to a specific block size and wall thickness. We calculate realistic daily output based on your target format — hollow, solid, or paver — and state the assumption clearly in the line layout document so there is no gap between quoted and actual production.
Q: How do pallet feeding and stacking stay synchronized with the press?
A: The PLC monitors press position and triggers the pallet feeder and stacker in sequence. Each station completes its movement within the 25-second molding cycle, so the press never waits for a pallet or for finished blocks to clear.
Q: What mixing capacity is needed upstream to keep pace?
A: The mixer must deliver a fresh batch before the press hopper empties. We specify the mixer volume and batch time against your chosen block format and the 25-second cycle so material flow remains continuous throughout the shift.
Q: How are voltage and control language confirmed before shipment?
A: We collect your local voltage, frequency, and preferred PLC display language during the order stage and lock them into a signed confirmation sheet. The motor, transformer, and PLC are then sourced to match, avoiding commissioning delays on arrival.
Q: Can I add curing rack handling and cubing later?
A: The line layout leaves connection points for downstream curing rack handlers and a cubing station. When you are ready to expand, the new stations integrate with the existing PLC without replacing the press or pallet feeder.
