System-matched line integration — every station from JS500 mixer through pallet return is timed to the QT4-15 host cycle so the press never idles waiting for upstream or downstream equipment.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT4-15 |
| Product Type | Stationary Hydraulic Block Making Machine |
| Host Machine Power | 27.5 kW |
| Moulding Cycle | 15 s (basis not stated in source — confirm block format / material / thickness) |
| Overall Dimensions (L×W×H) | 7100 × 1600 × 2610 mm |
| Pallet Size | 1020 × 570 mm |
| Net Weight | 5 T |
| Vibration Force | 40 kN |
| Mixer Model | JS500 |
| Voltage | 380 V (frequency not stated in source — confirm target market standard) |
| General Water Consumption | 4 T / day |
| Required Workers | 3–4 |
| Workshop Area | 150 m² |
| Control System | Computer controlled directional vibration with frequency and brake cancellation |
| Feeding System | Hopper with swing-type cutting device |
| Vibration Method | Low-frequency feeding, high-frequency vibrating; table and mould vibrate together for 2–3 s |
| Motor | Siemens motor |
| Material Level Control | Photoelectric sensor on host hopper |
| Theoretical Productivity | Refer to format-specific capacity sheet (basis not stated in source) |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production for load-bearing walls | Crushed stone, cement, sand, and water at controlled moisture |
| Solid block manufacturing for partition and boundary walls | Fine aggregate blended with cement, suitable for stationary plant curing |
| Paving and interlocking formats with mould change | Standard concrete mix adjusted for surface finish and compressive strength |
| On-site production for housing and infrastructure projects | Locally sourced aggregate matched to mix design validated before commissioning |
What the 15-Second Cycle Figure Leaves Out of Daily Output Planning
A moulding cycle only matters when every upstream and downstream station keeps pace with the press.
Capacity numbers quoted per hour often assume a single ideal block format while ignoring mixer batch time, pallet return speed, and curing rack turnover. I have walked into plants where the host machine sat idle for several seconds each cycle because the JS500 mixer could not deliver a fresh batch fast enough or the pallet circuit had a bottleneck at the return conveyor. When you plan a stationary block machine production line, the press is only as productive as the slowest station feeding it or clearing its output [NEED_CITE: line balance principles in concrete block manufacturing].
Synchronizing the Mixer Output with the Host Press Cycle
The JS500 mixer must discharge a complete batch within the window the QT4-15 host requires between successive moulding cycles. If the mixer takes longer than the press cycle plus the swing-type hopper refill time, the host waits with its hydraulic system at standby and vibration motors disengaged. Over a full shift this dead time accumulates, reducing the realistic daily output well below what the 15-second figure suggests. A stationary block machine production line layout should state the assumed block format so that mixer batch size and discharge interval can be verified against the host demand.
Pallet Circuit Speed and Curing Rack Turnover
Each moulding cycle consumes one pallet, and that pallet must travel through the stacking station, into the curing area, back to the return conveyor, and onto the host table before the next cycle begins. If the curing rack handling system moves pallets slower than the press outputs them, pallets queue at the stacker and eventually the host runs out of empty pallets to receive the next charge. The 1020 × 570 mm pallet size must be cross-checked against the curing rack spacing and forklift capacity already in place at the buyer’s facility, because a mismatch forces double-handling and disrupts the cycle balance across the entire stationary block machine production line [NEED_CITE: pallet circulation rate versus press output in block plants].
Host Hopper Feeding and Vibration Decoupling
The photoelectric sensor on the host hopper monitors material level independently from the vibration sequence. This decoupling matters because if the hopper refill coincides with the high-frequency vibration phase, residual material impact can disturb the compaction already underway in the mould box. The swing-type cutting device distributes concrete evenly across the mould cavity, reducing density variation from one side of the pallet to the other, and the directional vibration system with frequency brake cancellation keeps energy confined to the mould table rather than bleeding into the frame.
Reading the Core Parameters That Shape Line Performance
The 40 kN vibration force works together with the hydraulic pressure to compact the concrete mix inside the mould. Higher vibration force liquefies the mix faster, allowing the 2–3 second synchronous vibration window to fully exhaust air and settle aggregate, but the force must be matched to the buyer’s specific mix design and local aggregate gradation. The 27.5 kW host power rating covers both the vibration motors and the hydraulic pump; undersizing the electrical supply circuit causes voltage drop during the vibration peak, which in turn shortens motor life. The 7100 × 1600 × 2610 mm overall footprint sets the minimum bay width, and the 150 m² workshop area figure assumes a dedicated curing zone adjacent to the press — a constraint that shapes the entire stationary block machine production line building layout.
When Line Stations Are Quoted Separately, the Press Pays the Price
A buyer who purchases the host machine without confirming the mixer output, pallet return conveyor speed, and stacking station capacity often discovers after commissioning that the line runs at a fraction of the quoted cycle rate. The host press sits idle, drawing power without producing, while workers manually shuttle pallets to keep output moving. This situation is not a machine fault — it is a line planning gap where each station was sourced independently and nobody verified the cycle-to-cycle handoff [NEED_CITE: common causes of idle time in block making lines].
Why Sourcing the Complete Line from One Supplier Matters Here
Block machinery as a single focus means the QT4-15 press, JS500 mixer, pallet circuit, and stacking equipment are specified as one matched system rather than assembled from separate vendors with incompatible cycle times. Configuration is set against the buyer’s actual mix design and local aggregate, not a catalogue default, so the vibration force and hydraulic pressure arrive tuned to the material on hand. Mould design covers the formats the buyer’s market actually sells, and the automation level is selectable so a plant can start with manual pallet handling and add automatic stacking later. The 1020 × 570 mm pallet is specified with curing area and forklift compatibility in mind. Installation support includes operator training on the full line, not just the host machine.
Documentation & Verification
- Line layout showing each station position and pallet circuit path for the QT4-15 footprint
- Capacity calculation stating the block format assumed for the 15-second moulding cycle
- Voltage and control language confirmation sheet signed before production begins
- Factory test record on the buyer’s target block format before dispatch
- Pallet specification cross-referenced to buyer’s existing curing racks and forklift
Installation, Commissioning & Support
- Foundation plan sized for the 7100 × 1600 mm base with vibration isolation pads
- Dedicated 27.5 kW circuit with voltage drop verification at the main breaker
- JS500 mixer positioned to discharge within the host hopper refill window
- Photoelectric sensor calibrated on-site to buyer’s material density and flow rate
- Directional vibration parameters tuned to the confirmed local aggregate gradation
- Operator training covering mould change sequence and pallet circuit troubleshooting
Planning Your Line Starts with the Right Details
Before quoting a stationary block machine production line around the QT4-15, we need to know the block formats your market demands, the daily output target per format, and the aggregate available at your site. Share your existing curing rack dimensions and forklift capacity so we can confirm pallet compatibility, along with your local voltage and frequency standard and preferred PLC display language.
Frequently Asked Questions
Q: How is the 15-second moulding cycle verified per block format, and what does it mean for daily output?
A: The 15-second cycle is a base figure that varies by block format, mix consistency, and thickness. A hollow block with larger cavities may need a longer vibration window to achieve full compaction, while a thin solid block may cycle faster. Daily output must be calculated per format, not from a single headline number, and the line layout should state which format was assumed.
Q: How do the JS500 mixer output and pallet return speed match the press cycle?
A: The JS500 batch size and discharge interval are calculated against the host cycle time so the hopper never runs dry. The pallet return conveyor speed is set to deliver an empty pallet to the host table within the cycle window, preventing the press from idling while waiting for the next pallet.
Q: Is the 1020 × 570 mm pallet compatible with my existing curing area and handling equipment?
A: Compatibility depends on your curing rack slot width, rack spacing, and forklift fork dimensions. We cross-check the pallet specification against your existing infrastructure before confirming the line layout, so double-handling is avoided and pallets move directly from the stacker into the curing racks.
Q: What voltage, frequency, and PLC language options are confirmed before shipment?
A: Voltage and frequency are confirmed to match your local grid standard, and the PLC display language is set to your operator preference. These details are documented in a written confirmation sheet signed by both parties before the machine enters production, preventing commissioning delays after arrival.
Q: Which supporting stations are included in the line quotation versus sourced separately?
A: The quotation scope lists each station explicitly: raw material feeding, JS500 mixer, pallet feeding, host press, stacking, and curing rack handling. Any item the buyer will source independently is flagged in the scope document so there are no gaps when the line is assembled on-site.
