It places emphasis on special processes

Engel wants to give more. Their new equipment, the innovation in new processes to the market and the expansion of its service, for example taking advantage of their knowledge in materials technology with which counts in the Steyr plant, they are examples of this. The resources of personnel and equipment of the plant are now also available to customers as a service. (this information is completed with the offered in plastic universal 70, p.58).

Engel (played by Helmut Roegele) stand did not receive professionals. It was not for less, taking into account the amount of technology that could be seen there. In addition to the above in our number 70, this was the most significant.

The separate three-phase synchronous motors are responsible for all necessary axial movements in this totally electric machine, as the movements of advance and retreat of the spindle, the ejectors, or openings and closures of the closing of knee. The settings of light between dishes also carried electromechanically through threaded spindles driven by motors of gears asincronos. The transformation of the rotational movements of the electric motors in linear movements is through accuracy of husillos ball drives. High rotational speeds of the motors move the spindles by toothed belts.

The sizes currently included in this series are 550 kN, kN 1,000 and 1,500 of clamping force. All of them could see up at the fair.

Each of the sizes has three units of injection with diameters of 18 to 40 mm spindle Therefore, every e-motion is offered in two categories of performance: standard configuration with speed of injection of 130 mm/s, and quick configuration with injection of 260 mm/s. speed

At the fair Engel wanted to demonstrate his approach to the future and his mastery of very well known in the market, such as multi-component injection, and other cutting-edge techniques.

Combimelt: In multi-component process, Engel with Combimelt solutions are possible thanks to his knowledge in the construction of moulds, its competence in the field of process technology and automation technique. The construction of moulds in Engel has grown substantially since the last K. With a stronger emphasis on the specific technique of multi-component injection molds, are produced mainly molds for the highest segment of pieces in regard to precision and quality. At the fair, a Duo Combi, with the second unit of injection behind the mobile plate, incorporated a mold that rotates about its vertical axis.

X-Melt: this new injection by expansion to precision parts is a completely new process technique for the injection of small pieces of up to 50 g with thin walls, as well as parts of microprecisión. The basis of the idea is as follows: the molten mass subjected to high pressure, stores the energy needed for an injection quickly, avoiding the need to use the usual separate hydraulic accumulator in the injection unit. A good example is the injection of the cover for the battery of a mobile phone (3.2 g of weight and thickness of walls of 0.4 to 0.5 mm) from a blend of ABS-PC. The melt is subjected to a pressure of 2,400 bar. The injection lasts only 60 ms, against the 80 ms of a conventional technique.

Thin walls: in this type of pieces are talking about relationships channels flow - 400: 1 wall thicknesses. So that the molten mass does not begin to solidify before time in pieces of less than 0.6 mm wall thickness, the spindle must have reached, 20 ms after the start of injection, speeds of up to 1,000 mm/s. equally severe are the conditions that must be given to avoid an excessive or too few filling at the end of the injection. To stop at only 10 ms the final position of the screw should be maintained accurately in ± 0.2 mm.

Foammelt: The injection of thermoplastics espumados based on blowing agents is known for some time. Engel offers a wide range of processes for the foam of thermoplastic. MuCell is mainly intended for the production of parts with less than 1 mm wall thickness Engel offers injection special units for this process, in which the gas dissolves in the dough evenly cast under a pressure between 100 and 200 bar. Loosen the pressure after the injection of the cast in the mould, to create high-value small cell foams. Depending on the geometry of the parts, it saves a 20 to 50% of material, without substantially damaging the resistance to bending of the piece. A different implementation is the combination of Foammelt with the back injection, or the Tecomelt technique.

Piece performed in the Duo Combi during the fair

Watermelt: Engel, on the basis of the experience in gas assisted injection and research by the IKV of Aachen, has developed the technique of water injection and it is already producing it in series under the name Watermelt. The compressibility extremely low in the water from the gas allows more accurate driving of the process, with clearly shorter cycles, but also hollow cavities better formed with wall thicknesses minors and smoother surfaces. In addition, also improves the degree of crystallinity of the inner surface as a result of the temperature of the water.

The revolving mould in the Duo Combi. Injection unit is behind the mobile plate.

Fibermelt: Under this name Engel brings together all the activities for the transformation of thermoplastic long fiber-reinforced. The main factor is the injection with great certainty in the process and careful with the fibers of grain long fibers-reinforced. Structural materials such pieces stand out especially, against plastics reinforced with short fibres, for its greater resistance to impact and greater absorption of energy in the event of knocking. Therefore, these materials are considered to be appropriate in the manufacture of car parts such as housings of bumpers and panels instruments and also, increasingly, in modules of doors, spaces for spare wheels, noiseless capsules or groups to the bottom of the soil.