Batch-off cooling machine

One of the most important machineries that make up a rubber manufacturing unit is the batch off cooling machine. The main purpose ofa batch off cooling unit is to cool and then stack rubber strip fed into it from either roller die sheeter or two-roll millonto a palette. There are five major processes associated with passing a rubber strip through a batch-off cooling machine, namely dip, cool, dry, stack and cut.

Before the introduction of batch-off cooling machines, labor force was deployed to manually dip the hot rubber strips with temperatures as high as 160°C into cooling tanks and then stack up the rubber sheets once cooled. Use of manual labor to cool and stack the sheets made the process both unsafe and inefficient. Batch-off cooling machines take care of the entire process of cooling these rubber strips to manageable temperatures and then stacking them up in an orderly fashion in a very short span of time and without any manual intervention whatsoever. Shorter cycle time means higher productivity and greater efficiencies of scale and most importantly, less exposure of labor to manufacturing hazards.

The process works as follows; rubber sheets are fed into the soaking bath placed at the entry of the batch-off and separated using a separation solution. The rubber strips then enter a cooling tunnel where they are cooled to appropriate temperatures depending on the purpose of usage. The cooled strips are then caught by gripping units and placed onto a feeding conveyor belt which moves the sheets through cutting machine onto a stacking palette where the cooled rubber sheets are neatly stacked up till they reach an earmarked height or weight. Once the stacked sheets have reached the specified size, the stacked palette is replaced with an empty palette and the same process is repeated.

Batch-off cooling machines are typically of two kinds Tunnel batch off machines where rubber strips move through a tunnel for cooling and cantilever batch off machines with rubber strips passing through one side of the machine only. Modern batch-off cooling machines come equipped with a host of new features which include recycling water used for cooling to save wastage and electricity, adaptive conveyor speeds to take care of different cooling and stacking requirements as well as ability to cool lamination strips as well as rubber strips to make them more useful as multifunctional machines.

Understanding overall use of rotary joints

A rotary joint which is also called rotary union or rotation union transfers media (oil, water, air, steam, fluid, coolant etc) from a stationary pipe to rotating cylinder or drum to allow the flow of heat transfer media in or out of the rotating roll. This equipment is used mostly in rubber, paper, printing, textile, chemical and plastic industries. Rotary joints are also used in machine tools, cranes and several other equipments. Heat conduction oil rotary joint is used to provide heating media like steam, hot oil, water to control the surface temperature of a drum, to move fluid or air to moving components.

Rotary unions come in multiple shapes and sizes and can have straight, dual, elbow and multiple ports. Custom designed rotary unions also come to suit the needs of equipment. Rotary joints with straight ports directly transfer the material through the joint and move in one direction; while dual joints let the fluid to flow in. Elbow ports, lead substances to move out at an angle and multiple ports allow rotary unions to manage different types of substances at the same time.

 Rotary unions hold a variety of beneficial features. They are recognized as a device which has ability to endure a huge range of heat and pressure. In order to remain rust resistant, some joints are made from stainless steel. The use of ball bearings facilitates the movement of rotary joints smooth. They also necessitate seals that get old due to regular use and needs to be changed to ensure better functioning. Without rotary unions, damages that might happen to electrical lines and fluid transferring lines would not be avoided and these lines might face crack and twisting.

 Some rotary joints work in a similar way. They are tapped into an input regulator joining it safely to a machine usually a manufacturing machine. The rotary union does not interrupt the function of the moving apparatus as it is designed to rotate together with the machine it connected to as the joint is capable to turn 360 degrees. Rotary unions can be used in different applications from semiconductor industry to larger industries.

Rubber cutter machinery manufacturers


Rubber industry is one of the largest forms of commercial industrial sector. Its production and treatment requires several machines to refine and modify it and convert into the rubber we usually find in our day to day products. Rubber is extracted from tapped rubber trees’ trunks and barks but it is the natural form and is initially extracted in the form of latex that contains the properties of rubber which is scientifically known as elastomers or elasticity. The natural latex extracted is then polymerized and processed into the synthetic or commercial rubber that we encounter in our day to day lives.

The rubber factories require several modern machines to establish the shape of the rubber industry which is today. Rubber cutter machinery manufacturers are solely responsible for the various types of machines used by several rubber factories and organizations. The machine manufacturers produce some of the finest machines which are precise in cutting, calendaring and other processes involved in making the rubber as valuable as it needs to be. Some of the common machines used by rubber factories and produced by the machine manufacturers are:

  • Rubber crushers: It uses the centrifugal technology to crush the rubber which can be re shaped later according to the purpose. It is made from high quality nickel and chromium alloy which guarantees its long shelf life and efficiency.
  • Open Mill: Rubber production process is a technical task and requires the kneading, mixing and refining of rubber before processing it. Open mill is used to serve that purpose, with its rigid built and extensive drive; it is the most significant form of machine used in the rubber processing field.
  • Calendar machines: It is used in making the rubber into thin sheets which can shipped out later to various industries which require the rubber in their product manufacturing process.

The machines used in the field of rubber are the core of the industry; many of the processes require heavy machines like the ones mentioned above. Thus, it is important for every rubber manufacturer to get the right machines from right source. There are several rubber machine manufacturers that offer high quality machines at reasonable rates.

The Advantageous Role of a Rotary Joint

What Is A Rotary Joint?

A rotary joints and rotary union which is also known as swivel joint is basically a mechanism that is used to transfer gases or liquids while swiveling or rotating from one connection to the other connection. Rubber rotary joints are engineered to endure a vast range of pressure and temperature for a variety of conditions and ambience. In addition to it, rotary joints may integrate multiple passages and tackles dissimilar types of media in present time.


 What Are The Functions Of Rotary Joint?

Rotary union functions by getting connected to an input and securing onto the other mechanism while letting a moving connection to be conserved. This device is used in a variety of applications, for instance, from miniature rotary joints for the semiconductor trade to large and heavy-duty rotary joints for industrial applications. Furthermore, various types of materials, seals and bearing types can be integrated.

The key function of rotary union is to transfer media like water, steam, hydraulic fluid, air, oil etc from an immobile source to rotating machinery, such as an indexing table or a drum. This type of device is mainly used in process industries such as printing, paper, textile, chemical, plastics and rubber. It can also be used on cranes, machine equipment and several other applications.

The design and production of the rotary union varies vastly that mainly depends on its application. It can be found in today’s market place in single and multi-passage flow configurations. In the type of single-flow rotary joint, the heat transfer medium flows only in one direction through the union whereas in the multi-passage rotary joint, the heat transfer media makes multiple passages through the same or different flow directions.

 Where to Buy Rotary Joint?

There are many online stores that deal with manufacturing and producing a variety of Rubber rotary joints at a very affordable price. Thereby, if you want to be facilitated with the advantageous features of this tool, place your order right away to any of such website.

Understanding the system of high speed rotary system

high speed rotary union is a fluid connector that that allows transfer of liquid, steam, hydraulic fluid and gas from a tube, pipe or hose to a rotating part such as cylinder, drum or spindle. A rotary union is also called rotating union, rotary unions, rotary joints, swivel joints, rotary valve, vacuum rotary union, and hydraulic coupling.

A rotating union is used where liquid have to transferred from a stationary source to a rotating part. It is used in oil, steel, gas and mining industries to meet the ultraclean demands of semiconductor and pharmaceutical production.  In renewable-energy industries, it is used in thermal solar plants and wind turbines.

Unions may have one or more passages. A rotary unit with two passages, could have the same media enter and outlet both passages. On the other hand, two passages could pass on the same media at two dissimilar pressures.

Selection standards

Primary considerations for choosing a rotary union may comprise number of passages, extent of the union, and types of threaded links on the machine attachments. Size refers to the flow and ports passages, as well as the equipment’s overall dimensions.  Other criterion is pressure. Depending upon the design, rotary unions can operate compressed air to around 150 psi, and vacuum as low as 28 in. Hg.

Temperature is another crucial design factor. Rotating unions are comprised of various machineries; each has its own individual temperature limit. Temperature limit of unions with standard deep-groove is 250°F (120°C). Heat-stabilized bearings can extend up to 320°F (160°C).

Operation considerations

Speed and track of rotation are critical operating factors of rotary union. It’s quite common for rotary unions to work at speeds of 3,500 rpm and more; however the high the machine speed, the better the alignment between machine and rotating union.

NPT threads are appropriate for slower speed machines. However, beyond 1,500 rpm, tapered NPT threads do not provide exact arrangement of the rotating union. In these cases, machine threads are recommended.

Direction of rotation is equally important. High-speed machine-tool spindles accelerate at fast rates. The direction of the thread should be always opposite to the spindle’s rotation direction.  For low-speed devices, this may not be so grave. But, in order to fit any rotary union to a mating mechanism, the direction of both parts of thread must be steady.


Correct installation of rotary union will extend its service life.  Despite specific production and use of highly defiant materials, rotating union is subject to wear, which is unavoidable due to its function. Factors that may restrict the service life of a union can be pressure, speed, flow, temperature and flow velocity of the media.

Mounting process is also a key factor for the long life of a rotating union. It is crucial that the bearing can be easily turned around in escalated condition without warping. Inappropriate hose length or bolting parts can cause warping of the bearings already at this stage.

Rubber making machine’s Significance

Rubber is used extensively in almost every product found in the world from computers, pipes, swimming caps, water proof shoes, phone covers and the list is chronic. The rubber is of two types: natural rubber (Latex grown) & Synthetic rubber (developed in laboratory). The natural rubber is extracted from the bark of trees which is further processed to make rubber. However, the natural rubber does not produce a lot of quantity as per its need in the human society which is why synthetic rubber is produced using chemical such as styrene butadiene, polyacrylics, polyvinyl acetate, polyvinyl chloride and olychloroprene.

The rubber which is commercially produced is the type of synthetic rubber and producing it in bulk quantities for various other industries require colossal machines to process and make it usable. There are several machines which are involved in the processing of rubber and some of them can be traced below:

  • Rubber crushing machines: This machine is used in crushing the rubber which can be later used for different purposes. The machine requires maintenance and spare parts such as bearings and high speed rotary unions.
  • Mixing mills: Mixing mills are used for kneading, grinding and refining the processed rubber which can be shaped further in order to finish the process. The mills are made from robust material which has high drive efficiency, long life and easy maintenance.
  • Triplex rubber extruder: this particular machine is used for the extrusion of tire tread and is used on a regular basis at any rubber processing factory.

The quality of rubber highly depends upon the type and quality of the machines used in the factories. This is why it is important to purchase the correct machinery for the production and other major processes involved with it. Thus, choosing the right supplier of the machinery is important and many machine manufacturers offer customized machines which need to be checked before bought. The machines usually are sold with warranties and also with the assurance of spare parts availability as rubber is a sticky business which requires few parts’ changes every now and then.