Continuous-feed press

Continuous-feed press
Brand: Bürkle
Type: 1428/50
Year of Manufacture: 2017

Process Description
The unpressed, stacked door panels are transferred from a customer-supplied automatic conveyor system to the Bürkle press line. The door elements are collected individually in the loading basket by tier. Once the basket is full, the door elements are transported alternately into the upper and lower press chambers of the multi-stage press. The upper and lower press chambers are unloaded using the unloading basket, while maintaining the order of the parts. This process constitutes a continuous cycle without waiting times, as the upper and lower press chambers are alternately loaded and unloaded. The loading basket’s collection function is equipped with a timer: If the set maximum waiting time for unpressed door blanks is reached, the press is automatically loaded even if the number of door blanks is less than the maximum possible.

Loading Cage (4 Levels)
The basic structure is a bolted/welded construction made of steel profile tubes. The lifting cage, with its 4 transport levels, can move vertically between the two lifting columns and is guided by special plastic rollers. The vertical movement of the lifting cage is powered by a hoisting mechanism equipped with a frequency-inverter-controlled electric gear motor with a brake. The hoisting mechanism is mounted on the lifting columns.
The 4 transport levels consist of belt conveyors and are used for the gentle transport of uncompacted material into the press.

Technical Data
Number of levels: 4
Conveyor belt: PVC
Drive: Electric gear motor (frequency-inverter controlled)
Conveyor length: 3,000 mm
Conveyor width: 1,400 mm
Level spacing: 210 mm
Overall height: ~4,200 mm
Infeed/transfer height I: 900 mm
Infeed/transfer height II: ~1,400 mm

Optima Press 1428 / 50 (2 x 4 tiers)
The basic structure of the press consists of several uprights and three press tables, with the middle press table permanently mounted to the uprights. Both the upper and lower press tables are arranged so that they can move vertically relative to the middle press table. The movable press tables are each equipped with a synchronizer and an integrated safety system.
This configuration creates an upper and a lower press chamber. Within these press chambers, the heating plates are suspended in a movable manner via a tie-rod system, thereby forming the individual tiers. The press chambers are opened and closed by hydraulic cylinders attached to cylinder mounts. Each tier is equipped with a separate film transport drive, which feeds the workpieces in and out. Precise film movement is ensured by an electropneumatic film guidance control system and a tensioning device. The heating plates consist of steel plates machined on all sides. These are designed with channels drilled from solid stock for the circulation of the heating medium and additional transverse channel holes for venting the films.
All major bolted surfaces of the press tables are planed and fitted with keyway connections.
The pressing pressure and pressing time can be controlled individually for each chamber.

Technical Specifications
Heating plate length: 2,800 mm
Heating plate width: 1,400 mm
Max. workpiece length: 2,500 (2,600) mm
Max. workpiece width: 1,250 mm
Heating plate thickness: 70 mm
Number of chambers: 2
Number of tiers per chamber: 4
Tier spacing: 210 mm
Number of hydraulic cylinders per chamber: 4
Total: 8
Cylinder piston diameter: 125 mm
Max. hydraulic pressure: 280 bar
Specific nominal pressure: 43 N/cm²
Based on max. allowable product dimensions of: 1,250 x 2,500 mm
Maximum pressing force per chamber: 1,370 kN
Total weight of the press: 37 t
Total height: approx. 4,200 mm



Note:
The technical data and descriptions are copies of the original order confirmation. The information is provided for informational purposes only and is not binding.