Matched Line Stations — the QT4-18 press is specified alongside its mixer, conveyor, pallet loader, block receiver and stacker as a single coordinated system so that cycle times align across every station.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Automatic Concrete Hollow Block Making Machine |
| Model | QT4-18 |
| Overall Dimensions (L×W×H) | 2500 × 1750 × 2200 mm |
| Rated Pressure | 16 MPa |
| Vibration Form | Platform Vibration |
| Pallet Size | 950 × 550 mm |
| Molding Cycle | 18–25 s (basis: cycle time by format to be confirmed) |
| Overall Power | 27.5 kW |
| Control System | PLC control with frequency converter |
| Electrical Components | Schneider |
| Mould Lifting Mechanism | Double-sided sync gears |
| Pallet Loading | Hydro-cylinder driven pallet loader |
| Material Feeding System | Hopper, feeding box, feeding platform, conveyor system |
| Block Receiver | Chassis with transport system, idlers, motor, reducer and triangular belt |
| Supporting Equipment Options | JQ500 mixer, 8 m / 6 m belt conveyor, stacker, block gripper, trolley, multi-hopper batching plant |
| Mould Configuration | One hollow mould included; additional formats available on request |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production | Crushed stone, sand, cement and lightweight aggregates |
| Solid block production | Standard concrete mix with local coarse aggregate |
| Paving block production | High-density mix for surface and base layers |
| On-site project block making | Semi-automatic line for housing and development contractors |
| Block plant start-up | Scalable line from raw material batching through to stacking |
What "One Press Quotation" Usually Leaves Out of the Block Making Machine Production Line
A press is only as productive as the slowest station around it.
When a block making machine production line is quoted as a press alone, the buyer often discovers after arrival that pallets must be fed by hand, wet blocks stacked manually, and the mixer cannot keep pace with the molding cycle. Daily output then falls well short of the cycle rate printed on the spec sheet, and the operator count doubles what was planned. [NEED_CITE: common gaps in single-press quotations for concrete block lines]
How the Supporting Stations Connect to the Press
The QT4-18 line treats raw material feeding, mixing, pallet loading, block receiving and stacking as one sequence. The hydro-cylinder pallet loader places a pallet and removes a pressed block in a single motion, which eliminates the idle gap between cycles that hand-fed lines suffer. Belt conveyor length is selected so that the mixer discharge rate matches the press consumption rate, preventing either station from waiting.
Why Line Timing Matters More Than Press Speed Alone
Platform vibration and 16 MPa hydraulic pressure shape the block in 18–25 s, but the next cycle cannot start until the receiver clears the pallet and the loader drops the next one. If the conveyor or stacker falls behind, the press sits idle regardless of its rated cycle. Matching every station to the same beat is the core of a reliable block making machine production line. [NEED_CITE: station synchronization principles in concrete block plants]
Reading the Specs That Decide Block Density
Platform vibration combined with 16 MPa rated pressure compacts the mix against the 950 × 550 mm pallet. Higher vibration frequency loosens fine aggregate into voids, while hydraulic pressure closes them; both must be matched to the buyer’s local mix design rather than a default setting. The double-sided sync gear mould lifting mechanism keeps the mould level during demoulding, which prevents edge cracking that would otherwise lower the yield of saleable blocks. The PLC with frequency converter lets the operator adjust vibration duration and pressure dwell from one panel, keeping batch-to-batch density consistent as aggregate moisture varies through the day.
The Cost of Stations That Do Not Match
A mixer that is too small forces the press to pause every few cycles while the batch replenishes, and a belt conveyor that is too short means the mixer must be placed awkwardly close to the press, complicating maintenance access. Pallets specified without regard to the curing area size force the buyer to reshuffle stock before forklifts can move them. Each of these mismatches adds labour and reduces the daily output that the line was intended to deliver. [NEED_CITE: hidden costs of unmatched line equipment in block production]
Why Buyers Specify the Full Line Here
Block machinery is the sole focus of the workshop, so the press, mould, pallet and handling equipment are selected as a matched set rather than sourced from separate vendors. Configuration is based on the buyer’s actual mix design and target block format, not a catalogue default. Moulds for the formats the buyer’s market demands — including custom drawings — are available within the same quotation. Automation level can start at semi-automatic and be extended later, protecting the initial investment. Installation, commissioning and operator training are included so the line reaches full cycle rate on site rather than after weeks of trial runs.
Documentation & Verification
- Line layout showing capacity per block format for the QT4-18
- Machine specification sheet covering press, mixer and conveyor
- Mould drawing and format list with changeover procedure
- Pallet specification matched to curing area and forklift
- Hydraulic and electrical schematic with Schneider component list
- Factory test record on buyer’s chosen block format before dispatch
Installation, Commissioning & Support
- Foundation plan based on 2500 × 1750 mm press footprint and 27.5 kW total power
- Dedicated power circuit sized for 27.5 kW with confirmed voltage and frequency
- Press and conveyor dismantled for container loading, reassembled on site
- PLC language and Schneider component settings confirmed before dispatch
- Operator training covering mould change, pallet loading and mixer batching
- Wear parts list for hydraulic seals, vibration motor and sync gears
Preparing a Line Inquiry
Provide the block formats your market sells, the daily output you plan to reach, and the local aggregate and cement you will use. Confirm the voltage, frequency and preferred PLC display language at your site, along with the curing area dimensions and the forklift pallet size already in use. This information allows the line to be configured so that every station matches from the first production day.
Frequently Asked Questions
Q: How is the daily output calculated, and which block format is the 18–25 s cycle time based on?
A: The molding cycle varies with block format, wall thickness and mix design. The quotation states the assumed block dimension and the resulting cycles per hour for that specific mould, so daily output is transparent rather than a single headline figure.
Q: Which supporting equipment stations are included in the line quotation, and which are optional?
A: The standard line covers the press, hydro-cylinder pallet loader, block receiver and one hollow mould. The JQ500 mixer, belt conveyor, stacker, block gripper and multi-hopper batching plant are listed as options so the buyer can match the line to the existing workshop layout.
Q: How do the mixer output, conveyor speed and stacker capacity match the press cycle?
A: Each station is sized against the same target cycle rate. The mixer batch volume and conveyor length are calculated so that fresh mix reaches the hopper before the press calls for the next charge, preventing idle time between molding cycles.
Q: What pallet size and material are specified, and are they compatible with existing curing infrastructure?
A: The line uses 950 × 550 mm pallets. Material — wood, bamboo or composite — is selected after the buyer confirms the curing rack spacing and forklift tine dimensions already in use, avoiding a mismatch on arrival.
Q: What is the mould change procedure, and how long does a format changeover take?
A: The double-sided sync gear mechanism allows the mould box to be lifted evenly and unbolted from the vibration table. Changeover time depends on the operator’s familiarity; the manual provides a step sequence, and the first change is practiced during commissioning.
