CX20-45 Type 9-Grinding-Head Pneumatic Polisher

Product Overview

The CX20-45 model 9‑head pneumatic polishing machine is a fully automatic, precision finishing and polishing device specially developed for PC imitation stone curbs, municipal paving stones, and large landscape slabs. It integrates three major functions—flat surface polishing, side edge polishing, and corner chamfering—and perfectly matches the post‑processing stages of high‑pressure molded PC stone production lines. This equipment specifically addresses industry pain points such as uneven traditional mechanical polishing, rough edges and corners, significant color variations on the slab surface, and poor finished product quality. Relying on a pneumatic flexible polishing process, it restores the natural stone texture of the finished product, making it a standard core finishing accessory for high‑end imitation stone slab production lines.

Working Principle

1. The entire machine is equipped with nine independent pneumatic polishing assemblies; the front and side surfaces utilize separate pneumatic flexible polishing structures, each operating with independently controlled pressure;

2. The polishing heads, driven by pneumatic mechanisms, automatically adapt to the curvature and flatness of the stone surface, dynamically adjusting the polishing gap;

3. Using Delta PLCs and inverters, the polishing force and operating speed are intelligently regulated, ensuring uniform polishing of the slab’s flat surface, sides, and chamfered edges;

4. First‑class brand motor‑reducer linkage drives the system, conveying slabs at a constant speed for balanced polishing across all areas, eliminating missed spots, over‑polishing, and chipping along the edges;

5. The entire process operates automatically via programmed settings, with materials automatically discharged upon completion, enabling seamless integration into upstream and downstream production lines for closed-loop automated finishing.

Core Advantages and Selling Points

Three‑sided integrated processing, multi‑functional mass production in one machine: Combining flat surface polishing, side edge polishing, and corner chamfering into a single unit, eliminating the need for separate equipment or multiple passes. It completes comprehensive stone finishing in one stop, suitable for processing all types of PC imitation stone products.

Pneumatic flexible polishing delivers top‑tier finished product quality: Unlike traditional hard‑friction mechanical polishing, the pneumatic heads self‑adapt and fine‑tune, accommodating slight dimensional deviations in the slabs while ensuring even pressure distribution. The resulting surface exhibits uniform gloss, no scratches, no chipping, no color variation, and smooth, well‑defined edges.

First‑class brand components throughout, ensuring long‑lasting durability and low failure rates: Standard equipment includes Shanghai Lichao motors, Shanghai Shuangzhao reducers, Delta PLCs and inverters, and complete Chint electrical components, providing stable transmission, precise electronic control, and highly compatible parts, resulting in extremely low failure rates even under prolonged heavy use.

Wide processing specifications and strong adaptability: Capable of handling PC stone slabs ranging from 150–450 mm wide and 100–200 mm high, covering mainstream sizes for municipal curbs, paving stones, and small to medium landscape slabs, easily switching between various product types during production.

Fully automated intelligent operation, reducing labor costs: PLC‑programmed preset parameters allow one‑click adjustment of speed and pressure, eliminating the need for manual alignment and polishing throughout the process. With 24‑hour continuous production, its polishing efficiency far surpasses that of older single‑machine polishing equipment.

Neat layout, ideal for line integration: The machine’s compact dimensions ensure minimal floor space requirements, allowing direct connection to the entire PC brick forming, curing, sandblasting, and shot blasting production line, achieving full plant‑wide automated coordinated production without requiring any facility modifications.

Enhances stone weather resistance, boosting product premium value: After polishing, the stone’s grain becomes more transparent, its surface dense and smooth, significantly improving corrosion resistance, weathering resistance, and overall durability. Finished products can rival high‑end natural stone, helping companies secure high‑end engineering projects.

Target Customer Groups

PC imitation stone manufacturing plants, municipal curb processing enterprises, landscape stone deep‑processing manufacturers, high‑end precast building material industrial parks, customers planning to build complete PC stone production lines, overseas municipal building material suppliers, and stone finishing contractors.

Original manufacturer’s core specifications

Application Scenarios

Specialized polishing and finishing projects for municipal road PC curbs

Production of polished imitation stone slabs for park landscapes and cultural tourism projects

Polishing and finishing of PC paving stones for high‑end residential exterior walls and flooring

Supporting polishing operations at the backend of high‑pressure molded PC stone production lines

Integrated chamfering polishing of antique‑style imitation stone building materials for commercial buildings

High‑standard granite‑texture PC stone finishing production for export markets

Solving Industry Pain Points

Addresses the traditional mechanical hard‑grinding issue of uneven pressure distribution, significant color differences on the slab surface, and poor transparency in finished products

Overcomes the inefficiency of older equipment unable to simultaneously polish sides and chamfers, leaving rough edges that require secondary manual trimming

Resolves the problem of minor dimensional deviations in slabs leading to chipping, scratching, and high scrap rates due to rigid grinding

Eliminates operational shortcomings caused by unstable control components from non‑brand suppliers, frequent breakdowns, and difficulties in procuring replacement parts after maintenance

Solves the challenge of needing separate machines for different stone specifications, high equipment investment, poor line connectivity, and limited production capacity

Core Product Value

The CX20-45 model 9‑head pneumatic polishing machine brings lasting production value to PC precast building material factories:

The three‑in‑one polishing function eliminates the need for manual side‑edge and chamfer trimming, reducing the number of polishing workers per production line by 2–3 and significantly cutting long‑term labor costs;

Pneumatic adaptive polishing lowers the scrap rate of slabs, greatly increasing the pass rate of finished products, reducing raw stone waste, and lowering per‑piece production costs;

Standard first‑class brand components throughout, highly compatible and low in failure rate, shortening downtime for maintenance and boosting the machine’s annual output uptime;

Finished products achieve a texture comparable to natural granite, elevating product grade and enabling the company to take on high‑end municipal and overseas export orders, thus expanding profit channels;

Seamlessly integrates with the entire PC brick production line, enabling one‑stop coordinated production from molding through shot blasting to polishing, thereby shortening the time required to establish and commission a new plant.

Frequently Asked Questions (FAQ)

Q1: Can the CX20-45 polishing machine simultaneously polish both the flat surface and the sides?

A: Yes, the machine is equipped with independent pneumatic polishing assemblies, allowing simultaneous completion of flat surface, side edge, and corner chamfering polishing without the need for secondary processing.

Q2: What size PC curbs can this equipment handle?

A: It accommodates slabs ranging from 150–450 mm wide and 100–200 mm high, covering mainstream municipal imitation stone curb and paving stone specifications available on the market.

Q3: What brands are used for the machine’s electrical components?

A: Motors from Shanghai Lichao, reducers from Shanghai Shuangzhao, PLCs and inverters from Delta, and other electrical components from Chint—all first‑class domestic brands.

Q4: What advantages does pneumatic polishing offer compared to ordinary mechanical polishing?

A: Pneumatic flexible adaptation to slab irregularities ensures no chipping, no scratches, and uniform gloss, while also accommodating slightly irregular slab surfaces. The finished product quality is far superior to that achieved through hard‑grinding polishing.

Q5: Can this equipment be connected to an entire PC stone automated production line?

A: The machine’s standardized structure and compatible inlet/outlet dimensions make it easy to integrate with conventional production lines, directly connecting to molding, sandblasting, and shot blasting equipment to enable fully automated production across the entire process.