Automatic Press Line ebu SELECT™ STM

Ebu Umformtechnik GmbH is an internationally successful company focused on the manufacture of standardized machines and innovative concepts for forming technology. It focuses on the development and production of complete forming lines with manual coil loading and threading, up to fully automated systems. The company designs and manufactures systems for the sheet metal processing industry.

Decoiler hopper ebu HS 25-630

At the entry to the production line, there is a decoiler hopper ebu HS 25-630 consisting of a coil flipper and a decoiler. The coil flipper changes the position of the coil from horizontal to vertical position. It facilitates the handling of coils and shortens their loading and positioning onto the decoiler. The decoiler has a hydraulic coil clamping, an auxiliary drive for easier coil threading and a transverse travel of the decoiler.

Technical parameters:

Load capacity max. 2,000 kg

Strip width max. 630 mm

Inner diameter of coils from 380 to 530 mm

Outer diameter of coils max. 1400 mm

Unwinding speed max. 25 m/min

Straightening machine ebu URM 9.40-630

The threaded strip passes from the decoiler hopper further to the straightener. The line uses the ebu straightener URM 9.40-630. It is equipped with a hydraulic strip guiding to the straightener and a guiding bridge between the straightener and the feed.

Technical parameters:

Strip width 630 mm

Material thickness 0.4-4.0 mm

Max. cross section 2,000 mm² (at 400 Mpa)

Diameter of straightening rolls 40 mm

Number of straightening rolls 9 pcs

Strip speed 6-25 m/min

Rolls are hard chrome-plated, all rolls are driven.

Feeder ebu EVS 630

After moving the strip through the straightener and the threading bridge, the strip enters the feeder, which ensures its precise feeding into the working space of the press - tool.

There is an electronic roller feeder eS EVS 630 in the line.

Technical parameters:

Strip width  630 mm

Strip cross section max. 1000 mm²

Material thickness  0.2 – 4.0 mm

2 feed rollers of diameter 80 mm

Speed range 0-100 %

Feed length max. 9999.99 mm

Accuracy +/- 0.05 mm

Feed rate max. 150 m/min

The feeder is equipped with a pneumatic intermediate release of rolls, a mounting bracket motor-adjustable in height +/- 75 mm, a lateral eccentric central spindle strip guide.

Lubrication ECKARDT

In front of the feeder there is a double automatic strip lubrication, manufacturer ECKARDT. It is used for possible lubrication of the strip entering the tool. The use of two pairs of lubricating rollers allows the use of two different lubricating oils without the need to change the filling and rollers.

ebu STM 250/2000 P2R

The main part of the production line is a frame mechanical press with working force of 2,500 kN (250 t), type ebu STM250 / 2000 P2R. The press is a monoblock - welded steel construction with a planetary gearbox. The eccentric shaft is made of high-grade special steel. It is drop forged. The plain bearings for the shaft and connecting rod are made of special bronze and have temperature sensors. The press is equipped with a hydraulic brake clutch, safety valve and two-hand control panel. The ram of the press is made of grey alloy in a double-connecting-rod design. The ram guide is of a roller type, pre-tensioned, backlash-free, 8-fold. Pneumatic balancing of the ram is 4-fold pneumatic. Tool clamping is by means of a quick-clamping hydraulic system, 3 circuits. The press control is SIEMENS SIMATIC S 7/1500 Tia Portal. Hydraulic overload control, 16-fold tool control, pressing force indication. For loading the tools, rolling brackets for max. 6 t and hydraulic rolling bars in the table. Interface for the completion of automation by a robot for insertion and extraction. Two conveyors for waste are used to take the technological waste from under the press.

Technical parameters of the press:

Nominal pressing force 2,500 kN (250 t)

Number of strokes continuously adjustable 20-100 strokes/min

Built-in height of tools between the table and the ram at max. stroke down and ram setting up 500 mm

Stroke re-adjustment 16-160 mm

Table area with T-grooves 2,000x1,000 mm

Ram area with T-grooves 2,000x1,000 mm

Press weight approx. 36 t

Height 4,415 mm

Width 4,620 mm

Depth 2,800 mm

Maximum tool weight 2,000 Kg

FORMING PERFORMANCE

Ebu SELECT™ STM provides material feeding, straightening, threading, lubricating, processing, pressing and tool changing processes, up to automatic production control of parts and waste handling. The introduction of the line into production opens up more efficient production of components, automation and optimization of production in the future. The most modern press line of its kind available on the market at present. High performance, speed and accuracy, it meets the requirements for our manufacturing process to the maximum.