Rubber Pad Forming is one of the sheet metal forming processes in which a flexible rubber pad is attached to the press ram to serve as both upper die and blank holder while either a punch or a die is placed on the press bed or press plate that becomes shaped as a final component. During operation the soft rubber pad die exerts pressure on a blank and will thereby deform the blank over the mould having a required geometry. When the process is complete the soft tool elastically recovers to its original geometry. Indeed, the soft rubber pad is a universal tool, which can be utilized for a wide range of different parts which implies that the production of a specific product only requires one rigid die (a lower half die), which allows to exclude accurate and tedious work for positioning of the dies, and makes the rubber pad forming process relatively cheap and flexible.

Rubber forming can be dicided into two processes, namely, solid rubber pad forming and fluid cell forming. Solid Rubber pad forming is relatively simple since it requires only solid rubber confined in a press ram.The fluid cell forming is such a process that pressurized media isolated in the confined area surrounded by the rubber pad and press ram elastically deform the rubber pad according to the final geometry of the componet's shape. The rubber pad forming is well known and has been used in aircraft industry but also Small and Medium sized Enterprises(SMEs) in that they may have the same production features like small or plate-like product series and a large variety in different parts in non-aircraft industries.

Plate type heat exchanger with fine fluid channel patterns

 


 
 

  • Almost any kind of sheet metals can be formed with thicknesses of 0.1 to 16 mm
  • Fewer operations are needed to form very complex shaped components in comparison to conventional sheet metal forming processes
  • Use of half rigid die makes tool costs much cheaper by the saving up to70%
  • The top surface of the formed component is free from the damages or scratches due to the use of soft rubber pad
  • Thickness variance in the formed products becomes reduced by more than 10% compared to conventional processes


 
 

 

Heat plate with large radiation area

Currently, plate type heat exchangers are widely used because of their maximum heat transfer efficiencies due to their large surface areas in application to heat sinks in various industries like desktop computers, notebooks and any other products necessary for fast heat transfer and ejection.

In order to use plate type heat exchanger to final components heat radiation plate must have fine patterns formed on the plate to have large area. One great advantage of using NexTOP Rubber Pad Forming Press is that very fine forming of repetitive patterns can be implemented on the large area plate using ultrahigh load press by Wire-Winding Technology.

NexTOP Co. is now manufacturing 50,000 RPF Press for the forming of heat plate with a maximum dimension of 7.5§³
 
 

Item
Specifications
Power Capacity
25,000ton x Double Frame
Main Cylinder Stroke
400mm
Open Height
800mm
Bolster Area
500 x 5000mm
Ram Speed
Idle : 15mm/sec
Working : 0.5mm/sec
Overall Dimension(mm)
2900 x 4400 x 6200
Die Cushion
None
Total Weight
240ton