Rollers

 

1. Super processing capacity: the maximum processed size of the roll surface is 1.6 meters in diameter, 14 meters in length and 25 tons in weight; it has a number of large CNC lathes, CNC roll grinders and heat treatment equipment.

2,Reasonable structure and material selection design: according to the technical requirements of various plastic products and production lines, the roll surface materials are made of high-quality 45#, 42CrMo alloy seamless pipes, and 42CrMo alloy forgings; the interior adopts a spiral reciprocating circulating flow channel design, and the flow channel is fully enclosed and welded or solid milling. Ensure that the strength of the roller, the cooling efficiency, and the temperature control of the roller surface are uniform and accurate.

3,Complete heat treatment process: In order to improve the overall rigidity and surface hardness of the roller, the shell and shaft head are quenched and tempered to a hardness of HRC26~28, and the intermediate frequency hardness of the roll surface is HRC55~60. Temper treatment after welding to reduce stress and prevent cracking and deformation. Dehydrogenation treatment after electroplating to reduce the brittleness of the coating. A series of heat treatment processes make the roller superior in performance, stable and durable.

4,Complete testing equipment: The production workshop is equipped with high-precision micrometer, lever meter, hardness tester, thickness gauge, spectrometer, flaw detector, infrared thermometer, surface roughness tester, computer dynamic balancing machine (online printing balance data report), etc.

5,Thoughtful pre-sale and after-sale service. To meet customer needs, provide consulting services such as prenatal data demonstration, model selection, design drawings, etc.; timely guide and help customers solve practical difficulties in use.

6,Super high cost effective: excellent quality, reasonable price and high-quality service, compared with domestic and foreign counterparts, it has a better user experience, so that you have no worries.

 

 

Davis of the United States, British Pike of the United States, Samsung of South Korea, BYD , Midea, Haier, Dalian Rubber and Plastic Machinery, Qingdao Zhongke Hualian, Jiangsu Xingyuan of China.

 

 

1. Runner: reciprocating runner.

2. Connection size and roll surface size.

3. It is best to have drawings.

4. Roller code (stamp), equipment number.

 

 

Rollers for conventional sheet plate and film extrusion lines

 

Roller Features

● Double-layer structure, internal spiral flow channel design, with good heat dissipation efficiency and temperature control accuracy.

● Adopting the form of interference shrink fit, the roller has high strength; the middle and high compensation bending is used to reduce the thickness error of sheet and plate products.

 

Roll surface heat treatment

● After quenching and tempering treatment, to ensure the dense tissue structure

● The surface is deeply quenched by intermediate frequency, and the hardness reaches HRC55-58

 

Surface treatment

● The surface is electroplated with hard chrome, the thickness is 0.08-0.12mm,

● Mirror, super mirror grinding and polishing

● Can process all kinds of skin texture, extinction,matte,frosted,patterned roller surfaces, and can be customized according to incoming samples.

● The surface can be sprayed with tungsten carbide to coat all kinds of rubber.

 

Features	Grades
Cylindricity and coaxiality of rollers	≤0.005mm
Roller surface temperature error	±0.5~1℃
Dynamic balance	G 2.5
Surface roughness	Ra0.005-0.01um
Hard chrome coating hardness	HRC60-64

 

 

 

The thickness of the roll surface shell of the thin-walled high-efficiency roll is only 50%-70% of the thickness of the standard roll shell; the area of the screw support point is reduced internally to increase the contact area of cooling water and heat transfer efficiency.

In order to offset the weakening of the strength of the thin roll surface, the overall arc-shaped flow channel is used to increase the bearing strength. Under the same working conditions, the output of sheet equipment using thin-walled high-efficiency rollers increases by 20%-50%.

 

 

 

It is used for optical-grade sheets, sheets, and thin-film products, such as: LED panels, membrane switches in electronics, and electrical appliances; computer, mobile phone LCD screens, and other high-end fields.

 

The rule is: The smoother and more precise the surface of the roller, the better the quality of the products produced. Therefore, we strive to achieve the smallest surface roughness tolerances.

 

Roller Features

● The surface finish of the super mirror roller can reach Ra0.005-0.01μm;

● The cylindricity and coaxiality of the rollers reach ≤0.005mm;

● Special structure design to ensure strong roller rigidity and minimum surface temperature error;

 

 

 

The cast film rolls manufactured by JWELL adopt strict European professional manufacturing standards, and have undergone multiple welding and heat treatment processes to ensure that the overall structure of the rolls is firm and reliable. In order to ensure its efficient heat exchange effect, the flow channels of the casting rollers are specially designed in a spiral shape, and the coolant flow through the flow channels is accurately calculated, so as to reduce the surface temperature error of the roller as much as possible. The temperature uniformity of the product is improved. The dynamic balance accuracy of the roll for cast film is particularly important. Dedicated large-scale dynamic balance verification equipment and various balance detection schemes make it run smoothly at high speeds.

 

 

Roller Features

● Maximum roller diameter: Φ1600mm

● The cylindricity and coaxiality of the rollers reach ≤0.005mm;

● The surface of the roller is plated with hard chrome, the thickness of the coating is 50~80um

● The surface temperature error of the roller is ±0.5~1℃;

● Surface polishing mirror surface, ultra-fine mirror surface, rough surface/matte surface, anti-stick roller surface treatment;

● Running speed: maximum 800 m/min;

● Overall deformation:<0.05mm under full load

● Dynamic balance during operation Best G 2.5

 

 

 

Patterned rollers are used for surface forming treatment of various plastic sheets and sheets such as PMMA, PC sheet, PP sheet, etc. The roller surface can be processed into various pattern forms. Using laser electronic scanning and color separation technology, the customer's sample products are converted into high-definition digital image information and directly entered into the engraving machine to replicate and engrave high-quality roller surface patterns. The simulation rate of the roller surface pattern is as high as 98%. Sandblasting is performed on the surface of the roller, according to the size of the mesh, so that the surface of the roller can achieve the effect of extinction, matt, frosted, and matte surface. Products are used in lighting, decoration, leather, automobile and other fields.

 

Roller Features

● The roll surface material can be made of 45 steel, 38GrMoAl, 42GrMo, 60GrMoV, etc.;

● A variety of internal runner designs, the temperature of the roller surface is uniform, to ensure the uniformity of the surface pattern of the product;

● The hardness of the surface electroplating layer reaches HRC60-62, which prolongs the service life of the pattern roller.

 

 

The products are widely used in the mother sheet casting molding of various biaxial stretching production lines and longitudinal stretching production lines such as BOPP, BOPET, BOPA, BOPS, BOPI, etc. The special internal circulation flow channel design is adopted to improve the heat conversion efficiency and temperature control accuracy. Replacing the technically upgraded roller can improve the casting efficiency by 20%-30%.

 

Roller Features

●Maximum diameter 1600mm

●Variable diameter staggered spiral flow channel

●Surface temperature accuracy ±0.5℃

●Efficient heat exchange technology performance

●High-precision dynamic balance correction

●Super high quality mirror finish

●Anti-corrosion treatment of spiral flow channel

 

The casting system is a crucial link in the film stretching production line. The precision of the master sheet formed by the casting ultimately determines the quality of the finished film after stretching. The casting roller produced by Suzhou Jewell Precision Machinery Co., Ltd. has been widely used in the high-end stretching production line imported from Europe and China. After the effect of practical application, it has been unanimously recognized and praised by customers.

 

 

According to the different uses of the product, high-precision CNC machining equipment is used to precisely process the surface of the roller, and the characteristics of thermal expansion and contraction, exhaust and other characteristics during the molding process of the product are fully considered. The products that are continuously extruded through the profiled surface forming rollers can fully meet the needs of users. Products are used in drainage board, honeycomb board, water stop board, bubble film and other purposes.

 

 

The roll bread glue of the rubber roll includes EPDM, Hyperion, Dingqing glue, liquid silica gel, solid silica gel, polyurethane, etc. According to the environmental conditions of use, it needs to meet the performance of oil resistance and solvent resistance. The elasticity, flexibility, impact resistance, wear resistance and other physical properties of the rubber surface all affect the quality and service life of the rubber roller. High temperature use is easy to make rubber aging, so when choosing a high-quality rubber roll surface, the cooling design of the roll core is also very important. The spiral flow channel design with large water volume makes the temperature of the roll surface uniform and controllable. Precise grinding and processing equipment ensures the coaxial accuracy of the rubber roller surface and the bearings at both ends, and a variety of static balance and dynamic balance correction procedures, even when used on production line equipment such as biaxially stretched films with extremely high speeds, it can run stably and efficiently. 

 

Hot Tags: rollers, China rollers manufacturers, suppliers, factory