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The second LWB exhibit will be a VS EFE 3000/4000 with vertical 4-tiebar clamping unit. Featuring the EFE injection system in the top level version, its potential for shortening the curing time is demonstrated.

30. June 2018

LWB Steinl at DKT 2018: Vertical machines with gantry and C-frame clamping units

The Steinl Group will be represented at the DKT 2018 for the first time with two trade fair stands. At booth 309 LWB Steinl-Maschinenbau will present examples of its thermoplastic and elastomer injection moulding machines. In addition, LWB Automation, which was founded in 2017, will make its trade fair debut at booth 413. With its new group company, LWB Steinl is expanding the range of machines to include handling and post processing solutions for elastic moulded parts. An automated processing cell will be operational as part of an automated production line at the LWB main booth.

LWB Steinl will present a production cell integrating a VCRS 500/115 C-frame machine with thermoplastic injection unit in combination with a VRF 1100/160 gantry frame rubber injection moulding machine for the fully automatic production of plastic/rubber-composite mouldings.

LWB Steinl will present a production cell integrating a VCRS 500/115 C-frame machine with thermoplastic injection unit in combination with a VRF 1100/160 gantry frame rubber injection moulding machine for the fully automatic production of plastic/rubber-composite mouldings.

At the LWB stand, two examples from the vertical machine programme will be the focus of the presentation. Together with a six-axis robot, they are part of a production plant for producing a rotationally symmetrical plastic/rubber composite part. Its base made of Vestamid PA 612 + 40 % GF is produced on a top-closing C-frame machine in thermoplastic version of the type VCRS 500/115 (from the Performance series with enlarged clamping plates).

The C-frame machines are available with a closing force of up to 160 t for the top closing and closing force of up to 250 t from below. The second machine presented, is a VRF 1100/160 gantry frame machine that overmoulds a polyamide central body with EPDM rubber of 70 Shore A. According to the manufacturer, the VR machines with a steel plate frame offer optimum conditions for a low-burr or burr-free rubber part production due to a rigid form support.

Demonstration of the EFE ­injection system for shorter curing times

At its trade fair premiere, LWB Automation will  present a production cell for post-processing  and testing of moulded rubber parts.

At its trade fair premiere, LWB Automation will present a production cell for post-processing and testing of moulded rubber parts.

The EFE injection system converts the kinetic energy from the forward-movement of the injection piston directly into an additional shear heat in the rubber compound and thus in an adjustable temperature increase during injection. This allows the vulcanisation process to start and proceed faster. With most rubber compounds, curing time reductions of 30 % to 50 % can be achieved without compromising product quality.

The VS EFE 3000/4000 vertical machine with tiebar-clamping-unit from the latest Performance line will be on display at the trade fair. In combination with a cold-runner and a dual servo-motor-machine drive system, a thick-walled rubber moulded part will be produced. This combination provides practical proof that the vulcanisation acceleration through the targeted conversion of shear energy works well with all cold runner systems without any compromises on the curing-time.

www.lwb-steinl.de

LWB Steinl at DKT 2018
Hall 12, stand 309
LWB Automation
Hall 12, stand 413
The Steinl Group has grown from two to eight companies within the last seven years. It all began with a mechanical workshop founded in 1962 by Alfred Steinl, from which STG (Stanztechnik Gesellschaft) and Landshuter Werkzeugbau (LWB Steinl) emerged, in which machines for rubber processing were built from 1971 onwards. In 2011, the biomaterials development and processing company Biofibre GmbH was added. In 2013, the sealant developer and application machine manufacturer Dreibond was taken over and in 2014 the joint venture URP (United Rubber and Plastic Machinery Ltd) was founded for the mechanical engineering industry in China. In 2015, LWB Steinl entered into a cooperation agreement with Rema Tip Top AG and founded VulcTech GmbH (manufacturer of repair presses for rubber conveyors) at the Landhut/Altdorf site. In the same year, the Steinl Group took over the Italian company Prodicon International Srl. (development of production of rubber batch-off plants). In 2017, LWB Steinl expanded its range of ­automation solutions for elastomer injection moulding by founding LWB Automation in Weinheim. The product range extends from handling equipment to modular processing cells to the conception of fully automatic production plants. The company with headquarters in Altdorf near Landshut, Germany, currently employs around 250 people and manufactures around 500 machines per year.

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