Integrated line engineering — the QT5-15 is never quoted as a standalone press; every upstream and downstream station is timed to its 13–20 s molding cycle so the host machine is not left idling between pallets.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT5-15 |
| Product Type | Hydraulic Automatic Concrete Block Making Machine |
| Overall Dimensions (L×W×H) | 7400 × 1950 × 2800 mm |
| Rated Hydraulic Pressure | 21 MPa |
| Vibration Form | Platform Vibration |
| Vibration Frequency | 2800–4500 r/min |
| Vibration Force | 40 kN |
| Pallet Size | 1100 × 550 mm |
| Molding Cycle | 13–20 s depending on block format |
| Total Mass | 6 T |
| Demolding Method | Hydraulic |
| Recommended Factory Area | 600 m² |
| Control System | PLC with man-machine interface, fault diagnosis, remote control function |
| Output — Hollow Block 400×200×200 mm (5 pcs/mold) | 7,200–9,600 pcs/day (basis: 15–20 s cycle) |
| Output — Porous Brick 240×115×90 mm (16 pcs/mold) | 23,040–28,800 pcs/day (basis: 16–20 s cycle) |
| Output — Standard Brick 240×115×53 mm (32 pcs/mold) | 61,440–70,892 pcs/day (basis: 13–15 s cycle) |
| Voltage & Frequency | Configurable — confirm before production |
| PLC Display Language | Configurable — confirm before shipment |
| Automation Level | Automatic with PLC-controlled fault diagnosis |
| Stacking Method | To be confirmed — automatic stacking and cubing optional |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block plant producing structural blocks | Crushed stone, sand, cement, fly ash, gravel, slag |
| Paver and interlocking brick production | Cement, dust, colored aggregates for surface layer |
| Kerbstone and curb production | High-strength concrete mix with coarse aggregate |
| On-site construction block production | Local sand and crushed stone with Portland cement |
| Concrete product manufacturer expanding format range | Solid, porous, and interlocking formats on one pallet size |
Why Quoted Cycles Per Hour Rarely Match Real Daily Output
A press cycle is only as fast as the slowest station feeding or clearing it.
When buyers evaluate an automatic block machine production line, the headline number is almost always cycles per hour on the host press. That figure silently assumes a specific block format, a perfectly timed mixer discharge, and a pallet return loop that never falls behind. In practice, a 15-second press cycle means the mixer must deliver a fresh batch every 15 seconds, the pallet feeder must index a new pallet in under two seconds, and the wet-side stacker must clear the finished pallet before the next one exits. If any station lags, the press waits — and the quoted capacity slips. [NEED_CITE: typical block line station synchronization losses in field operation]
Matching Every Station to the Press Beat
The QT5-15 completes a molding cycle in as little as 13 seconds for standard bricks and up to 20 seconds for hollow blocks. On a turnkey block making plant, raw material feeding, mixing, pallet indexing, and wet stacking must all fall within that window. A mixer that takes 45 seconds to discharge a batch will leave the press idle for two-thirds of its available time. Line layout therefore starts from the press cycle backward: each upstream and downstream station is selected so its own cycle plus transfer time stays shorter than the press cycle for the target format.
Where the Bottleneck Usually Hides
In most automatic block machine production line installations I have walked through, the bottleneck is not the press — it is the pallet return loop or the mixer discharge gate. A pallet that arrives two seconds late adds two seconds to every cycle, compounding across thousands of cycles per shift. Equally, a mixer gate that dribbles the last portion of the mix forces the operator to wait for a clean drop before the next pallet can be loaded. These are not press problems; they are line integration problems, and they are the reason a turnkey block making plant must be specified as a single system rather than a collection of individual machines. [NEED_CITE: field observations of pallet return loop delays in block plants]
Reading the Specs That Actually Matter
The 21 MPa hydraulic pressure and 40 kN vibration force work together: pressure compacts the mix while vibration liquefies it momentarily, allowing aggregate particles to settle into a dense matrix. If the vibration frequency is too low for a stiff mix, the block leaves the mold with weak edges; if the pressure is insufficient for a fine-sand mix, the block cracks during demolding. The platform vibration frequency range of 2800–4500 r/min gives the operator room to tune for different aggregate gradations, but the starting point must be the buyer’s actual mix design — not a catalog default. The 1100 × 550 mm pallet must also match the curing rack spacing and forklift tine width already on site; a mismatched pallet forces a capital spend on new racks and handling equipment.
The Hidden Cost of Skipping Line Integration
When supporting equipment is sourced separately, the mixer output, pallet conveyor speed, and stacker cycle rarely align with the press. The result is a host machine that spends a large portion of each shift waiting. Buyers often discover this only after commissioning, when real daily output falls noticeably short of the figure quoted on the press alone. Correcting it later means replacing conveyors, reprogramming PLC logic across mismatched controllers, and sometimes resizing the mixer — costs that could have been avoided by specifying the automatic block machine production line as one matched package from the start. [NEED_CITE: post-commissioning retrofit costs for unsynchronized block lines]
What Makes This Supply Approach Different
Block machinery is the single focus here, so the press, mold, pallet, and handling equipment are specified as one matched system. The line layout is drawn against the buyer’s target block format and local aggregate, not pulled from a generic template. Molds are designed and supplied for the formats the buyer’s market actually sells, including custom drawings when standard formats do not fit. Automation level is selectable — a buyer can start with semi-automatic pallet handling and add automatic stacking later without replacing the press. Installation support includes operator training on the specific mix and formats the plant will run.
Documentation & Verification
- Line layout with capacity calculation stating the block format assumed for each output figure
- Machine specification sheet covering hydraulic pressure, vibration frequency, and pallet size
- Mold drawing and format list for every block type included in the order
- Voltage, frequency, and PLC display language confirmation signed off before production
- Factory test record on the buyer’s target block format before dispatch
- Packing photographs and customs documentation support for container loading
Installation, Commissioning & Support
- Foundation plan sized to the QT5-15 overall footprint of 7400 × 1950 mm and 6 T operating mass
- Dedicated power circuit matching confirmed voltage and frequency before the machine ships
- Press and supporting stations dismantled for container loading and reassembled on site
- First-run parameter tuning of vibration frequency and hydraulic pressure against the buyer’s mix
- Operator training on PLC interface, mold change procedure, and fault diagnosis screens
- Wear parts and mold list supplied with the initial shipment for first replacement cycle
Before You Send an Inquiry
To size the automatic block machine production line accurately, share the target block formats and the daily output needed for each. Include the local aggregate type and any available sieve analysis, along with the curing area dimensions and forklift specification already on site. State the local voltage, frequency, and preferred PLC display language so electrical and control packages are built correctly the first time.
Frequently Asked Questions
Q: How is daily output verified and what block format does each capacity figure assume?
A: Every output figure on this page is tied to a specific block format and its corresponding molding cycle. For example, 7,200–9,600 hollow blocks per day assumes a 400×200×200 mm block at a 15–20 s cycle with five pieces per mold. When you confirm your target format, a detailed capacity table is prepared showing realistic daily output with all assumptions stated.
Q: Which supporting line stations are included and where must cycle times match?
A: The quotation scope lists raw material feeding, mixing, pallet feeding, stacking, and curing rack handling as individual stations. Each station’s cycle plus transfer time is calculated to stay shorter than the QT5-15 press cycle for your target format, preventing the press from idling between pallets.
Q: How are pallet size and material selected to match existing handling equipment?
A: The standard 1100 × 550 mm pallet is checked against your curing rack spacing and forklift tine width before production. If your existing racks use a different dimension, the pallet size and mold layout are adjusted so that no new racks or handling equipment are needed on arrival.
Q: What voltage, frequency, and PLC language options are confirmed before shipment?
A: Voltage and frequency are confirmed during the quotation stage and locked into the electrical schematic before production begins. The PLC display language is also confirmed at the same point so the man-machine interface arrives in the operator’s working language, avoiding commissioning delays.
Q: How is the line layout designed to integrate all stations with the press cycle?
A: The layout starts from the QT5-15 press cycle for your target block format and works backward. Mixer batch size, conveyor speed, pallet indexing time, and stacker clearing time are each calculated so the press is never waiting. The result is a single drawing showing every station, transfer point, and timed sequence.
