QT4-25 Semi Automatic Block Machine
What is the QT4-25 Semi Automatic Block Machine?
The QT4-25 semi automatic block machine is a high-performance concrete molding solution engineered specifically for small to medium-sized brick manufacturing operations. It balances manual control flexibility with automated hydraulic molding, delivering an ideal entry-level production system for business owners targeting low investment capital and high output yields.
The core working principle integrates hydraulic pressure with high-frequency vertical vibration technology:
Raw Material Preparation: Aggregates, sand, and cement are blended thoroughly in precise ratios with water.
Material Feeding: The blended concrete mix is transported to the main machine hopper and distributed evenly into the block mold cavity.
Vapor Vibration & Compression: Dual vibration motors apply intense vertical force while hydraulic cylinders exert uniform overhead pressure, driving out air pockets and compacting the concrete into dense, precise shapes.
Demolding & Discharge: Synchronized hydraulic lifts demold the newly formed blocks onto pallets for transfer to the curing area.
Main Components of the Machine Line
A standard QT4-25 block production line combines five vital equipment units working in tandem:
Main Host Machine: Constructed with heavy-duty structural steel housing the core mold assembly, hydraulic cylinders, and high-frequency vibration table.
Concrete Mixer: Prepares homogenous raw material slurry to ensure consistent structural strength across all block batches.
Belt Conveyor: Provides automated transport of mixed concrete directly from the mixer to the machine’s feeding hopper.
Hydraulic Control Station: Features a centralized valve block assembly that manages pressure levels, stroke speed, and demolding movements.
Block Stacker: Collects freshly demolded green blocks on pallets to streamline pallet handling and cured block transport.
Key Features and Advantages of QT4-25
We designed the QT4-25 Semi Automatic Block Machine to deliver maximum output and long-term reliability without complex overhead. It balances heavy-duty force with simple mechanics, making it an ideal choice for expanding block manufacturing operations.
High-Efficiency Vibration and Molding Technology
Simultaneous Vertical Vibration: Uses high-frequency table and mold vibration to remove air pockets instantly, achieving high-density blocks.
Fast Cycle Speeds: Completes a molding cycle in just 15 to 25 seconds, keeping daily production targets on track.
Consistent Quality: High compaction force produces smooth surfaces and sharp edges using minimal cement.
Durable Structure and Simple Manual Control
Heavy-Duty Steel Construction: Built with thick structural steel and precision welding to endure constant heavy-duty vibration.
User-Friendly Control Levers: Uses direct mechanical valves for effortless manual operation, eliminating complex electrical maintenance.
Low Maintenance Requirements: Simple mechanical design keeps spare part replacement straightforward. To compare how different setups perform, check out our guide on cinder block machine types and features.
Cost-Effective Production for Small to Medium Plants
Low Upfront Investment: Delivers solid output power at a fraction of the cost of full-scale automated lines.
Energy-Efficient Power: Runs on optimized electric motors that keep energy consumption low while maintaining high shaping force.
Fast ROI: Affordable machinery combined with durable output ensures a quick payback period for growing businesses. See our detailed breakdown on concrete block machine ROI and operation to evaluate cost efficiency.
FeatureAdvantageBenefit to Your OperationVibration SystemDynamic vertical compactionHigher block density & compressive strengthControl ValveHeavy-duty manual leversSimple operation & minimal electrical downtimePower SystemOptimized motor configurationLower electricity costs per block unitSteel FrameReinforced structural tubingLong machine lifespan with minimal wear
Technical Specifications and Production Capacity
Understanding the precise engineering metrics of the QT4-25 Semi Automatic Block Machine helps you plan factory layout, electrical requirements, and daily yield targets effectively. We build this unit to balance high-force vibration with low energy consumption for maximum operational efficiency.
| Raw Material | Sand, Cement, Fly Ash, Concrete, Boiler Slag, Mountain Flour, Industrial Waste. |
|---|---|
| Usage | To Produce Hollow Block, Solid Brick, Porous Block, Paving Brick, Interlocking Brick and Paver Through Exchange the Mould |
| Pallet Size | 1020×570×30mm(Wood Pallet) 1020×570×20mm(PVC Pallet) |
| Hydraulic Pressure | 16MPA |
| Exciting Force | 380KN |
| Forming Cycle | 15 Seconds |
| Vibration Type | Table Vibration |
| Power | 27.5kw |
| Vibration Frequency | 4600/min |
| Workers | 5 Persons |
| Land Area | 1000m² |
| Weight | 8600KG |
| Block Machine Size | 6800×1650×2450mm |
Power and Mold Specifications
The electrical and molding architecture gives you heavy-duty durability without requiring complex grid setups.
Power Configuration: 380V / 50Hz standard 3-phase power (customizable to 220V, 415V, or 440V based on regional power grids).
Hydraulic Pressure System: Operates between 16 – 21 MPa to ensure rapid demolding and high structural block density.
Mold Construction: Made with heat-treated, carburized manganese steel using precision wire cutting. Mold life exceeds 100,000 production cycles.
If you are expanding your plant or reviewing our broader concrete block machine options, the QT4-25 delivers the ideal balance between power demand and daily block yield.
QT4-25 Block Machine Purchasing Guide
FAQ: QT4-25 Block Machine
It typically works with cement, sand, stone powder, fly ash, gravel, and water to form different types of concrete products.
It can produce hollow blocks, solid blocks, paving blocks, interlocking bricks, fly ash bricks, and other customized concrete products by changing molds.
Yes, the QT4-15 is generally described as a fully automatic block making machine with PLC control and hydraulic operation.
Capacity depends on the block size and configuration, but one specification lists about 4 pcs of 400x200x200mm blocks per mold and 5,760 to 7,680 pieces per 8 hours for hollow blocks.
One listed molding cycle is around 15 to 20 seconds, depending on the machine version and block type.
Yes, the QT4-15 supports interchangeable molds, allowing the machine to produce different block shapes and sizes for various market needs.
Yes, it is designed for medium to high-capacity production and is widely promoted for construction material plants, building projects, and commercial block manufacturing.
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