QTJ4-25 Stationary Block Making Machine – Complete Line for Hollow Block Production Record ID sum: 8+3+8+0+2 = 21 Mod 6 = 3 → Pattern: [应用或物料] [品类词] – [站点修饰词] Hollow Block Stationary Block Making Machine – Complete Line Length: 58 characters

Matched Line Integration — The QTJ4-25 operates within a coordinated block production line where mixer discharge rate, pallet feeder timing, and mould cycle are balanced to prevent idle press time.

Technical Specifications

Application Suitability

What "Cycles Per Hour" Means Without a Complete Line Layout

A press rating is only as valid as the upstream feed rate and downstream pallet removal speed that support it.

When a stationary block making machine line is quoted with only the host machine specs, the actual daily throughput often falls short of expectations. I have seen pallet feeders that deliver too slowly, leaving the press waiting between cycles, or mixers that discharge a batch just as the hopper empties. The result is a line that technically produces the rated 960 pieces per hour during testing but delivers less over an eight-hour shift because station timing was never balanced [NEED_CITE: production line synchronization principles in concrete block manufacturing].

How Station Timing Affects Press Utilization

The QTJ4-25 operates on a 25-second moulding cycle for standard hollow blocks. For a complete block production line equipment setup, the JQ350 mixer must discharge a fresh batch into the conveyor and host hopper within that same window. If the mixer takes longer, the press sits idle. The semi-automatic configuration means an operator manually places pallets and removes finished blocks with a trolley, which sets the human pace as the limiting factor for sustained output.

Pallet Inventory and Curing Area Planning

With a pallet size of 850 × 550 × 20 mm, each cycle produces four hollow blocks on one board. A typical shift generating several thousand blocks requires a corresponding pallet inventory — often 300 to 500 pieces — so that cured blocks can be stripped while wet blocks continue to fill available boards. The pallet dimensions must match the curing rack spacing and the forklift tine width already on site [NEED_CITE: pallet curing logistics in concrete block plants].

Vibration Force and Block Density Targets

The vibration system delivers 60 kN of exciting power at 2800 r/min, combining bed mould vertical vibration with upper mould compression. This dual vibration approach compacts the concrete mix to achieve the target density for load-bearing hollow blocks. The actual block strength achieved depends on matching this vibration force to the buyer’s specific mix design and local aggregate gradation rather than relying on a generic recipe.

When Stations Fall Out of Sync

If the conveyor delivers material faster than the hopper can meter it into the mould, spillage accumulates around the press base. If pallet removal lags behind the cycle time, finished blocks sit on the machine table and delay the next press closure. These timing mismatches do not appear in a host-machine-only quotation but show up immediately during the first production shift, forcing unplanned downtime to reorganize the workflow [NEED_CITE: impact of unbalanced line stations on block machine daily output].

Why Line Scope Defines Project Feasibility

Shiyue approaches block machinery as a single-focus discipline, meaning the QTJ4-25 press, moulds, pallets, and supporting stations are specified as one matched system. The line layout and capacity calculation state which block format each output figure assumes, rather than offering a single generic cycles-per-hour number. Voltage, frequency, and PLC display language are confirmed in writing before production begins, so the control system arrives ready for the local electrical standard and operator language. Factory test records document actual cycle timing with the buyer’s specified mould installed, and packing photographs verify the complete configuration before container loading.

Documentation & Verification

• Line layout with capacity calculation stating block format assumptions per output figure
• Machine specification sheet confirming all included and buyer-supplied stations
• Mould drawing and format list for hollow, solid, paver, and curbstone options
• Pallet specification with material type and quantity recommendation for curing area
• Voltage and PLC control language confirmation signed before production
• Factory test record showing actual cycle times with buyer’s specified mould

Installation, Commissioning & Support

• Foundation plan based on 6400 × 1500 mm footprint and 2500 kg operating weight
• Electrical connection matching confirmed voltage and frequency with dedicated circuit for 17.9 kW load
• Host machine, JQ350 mixer, and mould set assembled on site with alignment verification
• PLC commissioning including cycle parameter tuning for buyer’s local aggregate and mix design
• Operator training covering mould changeover, pallet handling rhythm, and daily maintenance
• Wear parts and spare mould list provided for first replacement planning

Inquiry Preparation for Line Configuration

To size the complete block production line equipment around the QTJ4-25, provide your target block format and required daily output so each station can be timed to support that throughput. Confirm your local voltage and frequency standard along with preferred PLC display language to avoid delays during commissioning. Detail your available curing area dimensions and existing forklift specifications so pallet size and quantity can be matched to your material handling workflow.

Frequently Asked Questions

Q: How is line capacity calculated per block format, and what does daily output assume?
A: The rated 960 pieces per hour applies specifically to 400×200×200 mm hollow blocks with four pieces per mould on a 25-second cycle. Daily output assumes an eight-hour shift with continuous pallet availability and mixer feed. Other formats such as pavers or curbstones have different cycle times and pieces per mould, requiring separate capacity calculations stated in the line layout document.

Q: Which supporting stations are included and which remain buyer-supplied?
A: The standard configuration includes the QTJ4-25 host machine, one block mould set, and the JQ350 mixer. Pallet inventory, curing racks, forklift, and the trolley for manual block removal are typically buyer-supplied. The quotation itemizes exactly what ships from the factory so that no station is missing when production begins.

Q: How does pallet size affect curing area layout and forklift requirements?
A: The 850 × 550 × 20 mm pallet dimension determines curing rack spacing and the number of boards needed for a full shift. Your existing forklift tine width and lifting capacity must accommodate loaded pallets. Confirming these details before shipment ensures the pallet specification matches your facility rather than forcing layout changes after arrival.

Q: What voltage and PLC language options must be confirmed before production?
A: Voltage and frequency vary by market and must be specified in writing so the electrical system and motor ratings match your local grid. The PLC display language is set during control panel assembly. Confirming both before production prevents commissioning delays that occur when default settings do not match the operator’s language or the site electrical supply.

Q: How do cycle times across stations need to match so the press never waits?
A: The 25-second moulding cycle requires the JQ350 mixer to discharge material, the conveyor to refill the hopper, and the operator to remove the finished block and place a fresh pallet — all within that window. If any station takes longer, the press idles. Line timing is verified during factory testing to identify bottlenecks before equipment ships.