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การเลือก ประเทศ/ภูมิภาค อาจส่งผลต่อปัจจัยต่างๆ เช่น ราคา ตัวเลือกการจัดส่งและความพร้อมจำหน่ายสินค้า
ผู้ติดต่อของฉัน
IGUS MOTION PLASTICS (THAILAND) CO., LTD.

1340 Soi Bangkok-Nonthaburi 30, Bangkok-Nonthaburi Rd.,

Bangsue, Bangsue

Bangkok 10800 Thailand

+66 (0)2 587 4899
+66 (0)2 587 4898
TH(TH)

Robust bearing technology for unscrewing and emptying bottles


Reliable plain bearings in confined installation spaces and continuous operation in Rink beverage machines

The designers of Rink GmbH & Co KG select all moving machine components with great care. The bearing and drive elements are subjected to heavy loads. This is because Rink manufactures machines for the fully automated uncorking or unscrewing of caps of returnable bottles that work at a speed of up to 60,000 bottles per hour. Under these conditions, iglidur plastic bearings prove their worth - among others in the new carousel-type machines with increased throughput capacity.

Profile

  • What was needed: drylin R linear bearings with drylin linear liner and drylin R linear shafts, iglidur plain bearings, iglidur guide rings
  • Requirements: A Rink machine uncorks a million returnable bottles in just two-and-a-half eight-hour shifts, so all components must be capable of performing under continuous operation, and in a very compact installation space. In the beverage industry, they must also be free of lubricants.
  • Industry: Beverage industry, fluid technology
  • Success for the customer: The linear and rotary plain bearings are characterised by very good sliding properties with a long service life and are also ideally suited for use in the beverage industry because they are maintenance-free and do not require lubricants.
Rotary decapper A rotary decapper RK 940 of the company Rink GmbH & Co. KG

Problem

Rink GmbH & Co. KG develops and produces systems that prepare returnable bottles for reuse. Up to  60,000 corks are removed or caps are unscrewed per hour. Within just two and a half eight-hour shifts, a machine uncorks a million returnable bottles, and does so in a very compact installation space. All moving parts reach very high cycle numbers within a very short time and are subjected to very high stress.
 
Rotary machines for unscrewing bottles:
At present, rotary machines that unscrew individual bottles are in great demand. Although these machines need more space in the overall plant, the user is more flexible. Because this requirement increasingly applies to higher throughputs, Rink has now expanded the rotary machine range and developed a new machine type for unscrewing up to 30,000 individual bottles per hour. Among other things, a linear bearing of the tool head was required for the new rotary machines, which moves the rotary unscrewing device up and down in a wave-like manner.
 
Unscrewing of bottles in small packs:
In another project, the developers at Rink also optimised the bearing position. This is a new and very compact unscrewing head that dips into boxes with small divisions for small barrels. In the linear unit for the immersion movement 
 
Valve for emptying bottles:
In a third application example, the designers dealt with a valve that is used in the systems for emptying bottles. The machine head with the valves moves into the box, the valves seal, build up pressure and press the liquid out. Due to the height adjustment, a vertical movement of the valves with corresponding sealing is required. Originally, Rink used classic piston guide rings for the hydraulic cylinders for this task, which often did not provide the desired stability.

Solution

The fact that plain bearings from our bearing range were used in the design of these plant components is something that is self-evident for the Rink engineers. Our plain bearings offer very good sliding properties with a long service life and are therefore ideally suited for use in the beverage industry because they are maintenance-free and do not require lubricants.
The designers at Rink use very different bearings in almost all machine types:

drylin R linear bearings with linear liner and stainless steel shaft.
In the smaller rotary machines, plain bearings made from the all-round material iglidur J are used.
For the new larger models, the designers tested alternatives such as iglidur J200 and iglidur E7 and both aluminium and stainless steel shafts to optimise running performance. Today, used here are the drylin RJUM linear bearing complete with JUM-01 linear liner and a precision stainless steel shaft of the AWMP type (see picture 1 below). The result is a very cost-effective coefficient of friction. The service life could also be tripled.

iglidur Z plain bearings
Plain bearings made of iglidur Z are now used for the insertion movement of the unscrewing head, after the first unscrewing heads were equipped with bearings made of iglidur J and iglidur W300 (picture 2). The headrest is extremely wear-resistant and the users are very satisfied.

Guide ring made of iglidur J
Finally, a guide ring made of iglidur J is used to support the valve head when emptying bottles. The high-performance polymer is resistant to chemicals and is characterised by low moisture absorption (picture 3). In addition, the guide ring made of iglidur J is easy to install and is reverse compatible. This allowed the surrounding structure to remain unchanged. These bearings have now been the Rink standard for some years - especially as they are available quickly and cost-effectively as catalogue parts.

"Working with igus has brought us far. We can continuously improve our technology and optimise costs at the same time. “
 
Olaf Staave, Design Manager at
drylin single bottle unscrewers Picture 1: In the new single bottle unscrewers, the highly stressed head bearing is implemented with linear bearings from the drylin product range.
Unscrewing head with iglidur E7 linear bearings Picture 2: In a new unscrewing head for small barrels, Rink now uses linear bearings made of the material iglidur E7.
Guide ring made of iglidur J Picture 3: Optimisation for current series: a conventional piston rod seal was replaced by a guide ring made of iglidur J.

Here you can find further interesting applications from very different areas of use


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Photo
Aw Kai Hua

Product Manager iglidur® bearings ASEAN

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