Glazed Tile Roll Forming Machine

The production of glazed roof tiles begins with the uncoiling stage: after a coil of pre-coated steel is loaded onto the uncoiler, a low tension setting is applied (to prevent stretching of the coating), and the steel strip passes through dust-removal rollers and non-woven wipers to clear away surface dust. It then enters a spray lubrication section, where a minute amount of volatile lubricant is misted onto the surface to minimize friction between the coating and the forming rollers.

Next, the steel strip passes through a nine-roller, rubber-coated leveling machine to relieve internal coil stress. If embossing is required, the strip proceeds-immediately after leveling-through a pair of patterned rollers to imprint designs such as fish scales or wood grain textures (with the depth controlled to within 0.2 mm to avoid damaging the coating).

The forming process constitutes the core of the operation: the steel strip sequentially passes through 18 sets of rollers, which gradually shape it into the arched profile and the interlocking side edges characteristic of roof tiles. All rollers that come into contact with the sheet surface are either mirror-polished or coated with rubber, while the lateral guide wheels are constructed from nylon to prevent scratching.

Finally, the tiles undergo die-cutting to the specified length. During the cutting operation, a pneumatic clamping plate first secures the tile in place before the shearing action is executed; the contact surfaces of the cutting die are fitted with polyurethane pads to cushion the impact, thereby ensuring that the tile ends remain free of chipping or burrs. The finished tiles are conveyed out via a conveyor belt, where operators-wearing gloves to protect the surface finish-inspect their quality before packaging.

The entire production workflow is controlled by a PLC system, with a production speed ranging from 8 to 20 meters per minute. When switching between different tile profiles, the embossing rollers and the downstream forming rollers must be exchanged-a process that typically takes approximately one and a half to two hours.