Yancheng, Jiangsu – Sinoarp launched its pit-less hydraulic curing press for passenger car tires at its headquarters in Yancheng on 20 Sept.
New Sinoarp hydraulic curing press raises productivity
With 50-second cycle time compared with the industrial average of 65 seconds, Gen-IV Hydraulic Press can increase tire production by 2,600 unit each year, the company’s chief engineer Zeno Zhang introduced at the product launch.
The company said it invested €1.3 million (10 million yuan) over three years on the R&D for the machine, which offers a smaller footprint - 4,100mm centre-to-centre distance - compared to its predecessors.
According to Sinoarp an area which accommodates seven typical curing presses of the same kind can now house eight of the new machines.
The new model has its main press surge conveyor at roughly the same level with factory conveyor belt, and employs inverted loader oil cylinder to allow low-positioned chuck to pick up smaller tires, said Zhang.
Installation of the machine takes merely two days, compared with at least one week for industrial average.
It has easy-to-reconnect aviation plugs for cable connection and both the main machine and post curing inflator do not need to be disassembled for transportation.
Its overall structure is simpler compared with older models: support columns are incorporated into the guiding system, and swing arms are used in post curing inflation to replace a separate unloader.
Such machine has over 98% operating ratio. “The simpler the structure is, the more reliable the machine can be,” said Zhang.
The new model also boasts higher precision, with its lower mould fixed and top mould guided by linear rails. The guiding system is not affected by transmission with the introduction of tie rods with thread adjustment.
In addition, the machine’s left and right sides’ electrical control, mechanical structure and thermal pipes are independent from each other to allow separate maintenance.
The machine is claimed to be more energy-saving as well, with features such as a special thermal insulation structure and a more advanced control system that generates the exact flow rate and pressure as required.
It is said to reduce power consumption by 62% compared with a competitor machine used by one of the company’s customers.
The fully automatic machine can meet the demand of a range of tire specifications including 45-, 46-, 48- and 52-inch as a replacement for mechanical presses, and can handle cured tires with up to 945mm outside diameter and 380mm height.
Sinoarp specialises in curing press for both car and truck tires, with sizes from 24-inch to 130-inch for mechanical machines and from 28-inch to 66-inch for hydraulic ones.
It generates 95% of its revenue from big tire makers such as Michelin, Goodyear, Bridgestone and Yokohama, with 80% of total sales to the overseas markets.
Sinoarp hires 40 engineers out of 200 total staff headcount and its R&D expenditure was nearly €2 million in last year alone.
“We can finish upgrading the rest of our portfolio with technologies used in the new model over the next couple of years,’ said the company’s founder and chairman David Chen.
Chen started the precursor of Sinoarp in 1999 as export firm, selling Chinese curing presses to overseas tire heavyweights.
After getting constant customer complaints about product quality, Chen decided to build his own manufacturing site in Suzhou, Jiangsu into operation in 2007 and received its first order from Bridgestone soon after.
“The trust we’ve built along the way sure helped,” said Chen. He coined the name Sinoarp, with the last three letters standing for ‘accuracy, reliability and performance.’
The company relocated in 2013 to its new headquarters, and currently the only manufacturing site, in Yancheng, Jiangsu. The $56 million site covers 121,000 square metre total area, and has up to 500 unit annual designed machinery capacity with 220 produced last year.