Matched Line Engineering — The QTJ4-25 is positioned as the press at the centre of a complete block production line, so mixer output, conveyor speed, pallet feed and curing rack handling are specified as one system rather than assembled from separate suppliers.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Semi-Automatic Hollow Block Making Machine |
| Model | QTJ4-25 |
| Machine Dimension | 3060×1730×2580 mm |
| Total Weight | 4 T |
| Vibration Force | 45 kN |
| Cycle Time | 25 s per mould |
| Pallet Size | 850×550 mm |
| Block Height Range | 40–280 mm |
| Workshop Area | 50–150 m² |
| Material Storage Area | 300–500 m² |
| Belt Conveyor Length | 8 m |
| Mixer Model | JQ500 |
| Host Motor Brand | Siemens or ABB |
| Control | Electric control |
| Automation Level | Semi-automatic |
| Voltage & Frequency | 380V / 3-phase / 50Hz (customizable to local voltage) |
| Output Capacity | 480 pcs/h (based on 400×200×200mm hollow block, 4 pcs/mould) |
| Output Capacity | 600 pcs/h (based on 400×150×200mm hollow block, 5 pcs/mould) |
| Output Capacity | 840 pcs/h (based on 400×100×200mm hollow block, 7 pcs/mould) |
| Output Capacity | 2880 pcs/h (based on 240×115×53mm solid brick, 24 pcs/mould) |
| Mould Format Options | Hollow block, solid block, interlocking block, paver, curbstone, riverside brick, revetment brick, grassed brick, colored paver |
| Custom Mould Design | Available to buyer drawings |
| Warranty | 1 year (excluding wearing parts) |
Application Suitability
| Application | Material or Output |
|---|---|
| Small to medium block production plants | Hollow and solid blocks from crushed stone, sand and cement |
| Construction contractors producing blocks on-site | Interlocking bricks and pavers from locally sourced aggregate |
| Entrepreneurs setting up a first block plant | Curbs, revetment bricks and colored pavers for housing projects |
| Building material distributors expanding format range | Fly ash and cement-based mixes across multiple mould formats |
What "480 Blocks per Hour" Leaves Out About Your Semi-Automatic Block Making Machine Production Line
A quoted cycle time means nothing if the mixer, conveyor and pallet handling cannot keep pace with the press.
Too many buyers receive a quotation that lists only the press, then discover on commissioning day that raw material arrives late, pallets are fed by hand and finished blocks pile up on the workshop floor because no stacking or curing rack system was included. The Semi-Automatic Block Making Machine production line addresses this by specifying each station — JQ500 mixer, 8 m belt conveyor, pallet feeder — against the 25-second cycle so the press is never left waiting and throughput matches the format-based calculation [NEED_CITE: block production line station synchronization standards].
How Each Station Feeds the QTJ4-25 Press
The Semi-Automatic Block Making Machine production line starts with the JQ500 mixer, which must discharge a consistent batch within the window the press demands. An 8 m belt conveyor carries that mix to the machine hopper at a rate matched to the 45 kN vibration cycle, preventing the hopper from running dry or overflowing mid-cycle.
Why Pallet Size and Curing Area Must Be Confirmed First
The 850×550 mm pallet is the physical link between press output and your curing yard. If the pallet dimensions do not align with the forklift tine spacing or curing rack slots already on site, blocks must be restacked by hand before they can cure — erasing any throughput advantage the press itself delivers. Confirming pallet material, rack geometry and forklift capacity before production avoids a bottleneck that no amount of press speed can overcome [NEED_CITE: pallet and curing yard compatibility in block manufacturing].
Reading the Vibration Force and Cycle Time Together
The 45 kN vibration force, applied over a 25-second cycle, determines how tightly aggregate particles pack inside the mould cavity. Higher vibration combined with correct hydraulic resistance produces denser blocks with consistent wall thickness, critical for hollow formats where thin webs must survive transport without cracking. The block height range of 40–280 mm means the same vibration profile must work across thin pavers and tall hollow blocks, so the electric control must allow the operator to adjust amplitude per mould format rather than applying one fixed setting.
The Real Cost of Leaving Supporting Equipment Off the Quotation
When a line quotation lists only the press, the buyer absorbs hidden costs after arrival: manual pallet feeding slows cycles, hand stacking damages uncured blocks, and a mismatched mixer starves the hopper. These gaps do not appear in the machine specification sheet but show up as lower real daily output and higher breakage rates during the first production weeks [NEED_CITE: hidden costs in incomplete block line quotations].
Why the Line Is Specified as One Matched System
Shiyue Machinery treats block machinery as a single focus, meaning the QTJ4-25 press, JQ500 mixer, belt conveyor and pallet handling are configured together against your actual mix design and local aggregate. The configuration is set against the block format your market sells, not a catalogue default, so capacity calculations state which format each figure assumes. Mould design and supply cover every format listed — hollow, solid, interlocking, paver, curbstone — including custom drawings when your market requires a non-standard profile. Automation level is selectable, allowing a buyer to begin with semi-automatic pallet handling and add automatic stacking later as volume grows. Installation support covers the full line from raw material feed through curing rack loading, not just the press alone.
Documentation & Verification
- Line layout and capacity calculation stating the block format assumed for each throughput figure
- Machine specification sheet with hydraulic and electrical schematic for the QTJ4-25
- Voltage and control language confirmation document signed before production begins
- Pallet specification matched to your curing rack dimensions and forklift capacity
- Factory test record run on your target block format and mix design before dispatch
- Operation and maintenance manual covering every station in the Semi-Automatic Block Making Machine production line
Installation, Commissioning & Support
- Foundation pad sized to the 3060×1730 mm footprint with vibration isolation for the 4 T mass
- Dedicated 3-phase 380V circuit with confirmed frequency before the host motor is wired
- Full line equipment shipped by sea container and dismantled for reassembly at site
- First-run parameter tuning on your local aggregate and target mould format
- Operator training on electric control adjustment across all block height ranges from 40 to 280 mm
- Wear parts and mould list provided so the first replacement order is planned before arrival
What to Share When Requesting a Line Quotation
Send the block format you sell most, the daily output you need for that specific format, and the type of aggregate available within hauling distance of your site. Include your workshop dimensions, existing curing rack layout, and local voltage and frequency so the Semi-Automatic Block Making Machine production line can be configured before production begins.
Frequently Asked Questions
Q: How is daily output calculated, and which block format does each capacity figure assume?
A: Every throughput number is tied to a specific mould. For example, 480 pieces per hour is based on a 400×200×200mm hollow block with 4 cavities per mould, while 2880 pieces per hour assumes a 240×115×53mm solid brick with 24 cavities. The quotation includes a capacity table listing each format you plan to produce so you can plan shifts accurately.
Q: What supporting equipment is included in the line quotation?
A: The quotation covers the QTJ4-25 press, JQ500 mixer, 8 m belt conveyor, pallet feeder and the electric control system. Stacking and curing rack handling can be added based on your automation level choice. Every item is listed separately so you see exactly what arrives and what you supply locally.
Q: How do cycle times at each station connect so the press is not the bottleneck?
A: The 25-second press cycle sets the pace. The JQ500 mixer batch size and discharge rate, the 8 m conveyor speed, and the pallet feed interval are all calculated against that cycle. If any station runs slower, the press waits and real output drops below the format-based figure stated in the proposal.
Q: Is the pallet size chosen to match my existing curing racks and forklift?
A: The standard 850×550 mm pallet is confirmed against your curing rack slot width and forklift tine spacing before production. If your yard uses different dimensions, the pallet specification is adjusted so cured blocks move directly from press to rack without manual restacking.
Q: What voltage, frequency and control language will be confirmed before shipment?
A: The standard 380V / 3-phase / 50Hz supply is adjustable to your local grid. The electric control display language and operation manual language are written into the order confirmation so the operator can read all prompts on commissioning day without translation delays.
