- Email: [email protected]
SpindleShield union reports leakage
sealing
TECHNOLOG TECH NOLOGY Y
ISSN 1350-4789 September 2008
www.sealingtechnology.info
New pressure compensation seal developed for transmission control units
S
IMEA is using the new Schreiner PCS Film for the reliable protection of BMW Transmission Control Units. Schreiner ProTech, working in conjunction with SIMEA GmbH, a subsidiary of Siemens, have developed a new, special-purpose pressure compensation seal (PCS) film specifically to allow cooling air flow while providing reliable protection for the sensitive electronics in the automotive transmission control units. SIMEA GmbH produces transmission control units for the German automaker BMW. To provide reliable protection for the sensitive electronics from environmental influences such as road dust, salt, oil, or moisture, they are installed in closed housings. Temperature and climatic changes lead to considerable pressure variations inside the housings, which have an adverse impact on the seals. To prevent the potential ingress of moisture the housings are equipped with vent membranes called pressure compensation seals
(PCS). Typically, these PCSs are injectionmoulded components with an integrated membrane, which must be staged separately and installed by hand in a complex, discrete process step. SIMEA was therefore seeking a more efficient solution, and to this end it awarded a respective development project to Schreiner ProTech. Instead of following the conventional approach of installing the vent membrane as an injection-moulded component assembly, Schreiner ProTech integrated the membrane in a self-adhesive, special-purpose film. This has the advantage of producing some major manufacturing benefits. The self-adhesive PCS films are staged on a roll at the respective production unit, allowing automatic dispensing and application to the component housing. A further major reduction of the required process steps was achieved by the combining the PCS into the nameplate label replacing the previous, separately installed nameplate label.
SpindleShield union reports leakage
D
eublin Co has introduced SpindleShield leak detection for use on sophisticated CNC machines. Coolant unions with SpindleShield employ a unique patent-pending electronic leak detection system that detects coolant problems and allows for rapid machine shutdown. Machining centres with through-coolant spindles require unions to deliver coolant at high pressure through the cutting tool at the cutting surface. For dry running cycles or machining operations with multimedia such as air, minimum quantity lubrication (MQL) or coolant, unions such as the patented Pop-Off and patent-pending AutoSense, a technology that separates the seals in the absence of coolant and allow indefinite dry run or multi-media capabilities may be used.
During each cycle from one mode to the other, a minute amount of coolant spills out, which must be collected and drained. Excessive leakage, if not detected, may leak past the spindle seals and eventually contaminate and damage the spindle bearings. SpindleShield protects the spindle and prevents replacement of spindle bearings by allowing rapid, automatic shutdown of machines. The system can be integrated into any standard system bus. Contact: Deublin Co, 2050 Norman Drive, West, Waukegan, IL 60085-6747, USA. Tel: +1 847 689 8600, Fax: +1 847 689 8690, Email: [email protected], Web: www.deublin.com
The new, special-purpose pressure compensation seal film is designed to specifically allow cooling air flow while providing reliable protection for the sensitive electronics of a transmission control unit.
Contact: Schreiner ProTech, Bruckmannring 22, D-85764 Oberschleissheim, Germany, Tel: +49 89 31584 0, Fax: +49 89 31584 5166, Email: [email protected], Web: www.schreiner-protech.com
Contents News
1–6, 16
In Brief Company News
3 5–6
Conferences & Courses
6
Features Low temperature sealing capability of elastomer O-rings Sealing for the food and beverage industry
Patents Events Calendar
7 11
14–15 16
ISSN 1350-4789/08 © 2008 Elsevier Ltd. All rights reserved. This journal and the individual contributions contained in it are protected under copyright by Elsevier Ltd, and the following terms and conditions apply to their use: Photocopying Single photocopies of single articles may be made for personal use as allowed by national copyright laws. Permission of the publisher and payment of a fee is required for all other photocopying, including multiple or systematic copying, copying for advertising or promotional purposes, resale, and all forms of document delivery. Special rates are available for educational institutions that wish to make photocopies for non-profit educational classroom use.
TECHNOLOG TECH NOLOGY Y
ISSN 1350-4789 September 2008
www.sealingtechnology.info
New pressure compensation seal developed for transmission control units
S
IMEA is using the new Schreiner PCS Film for the reliable protection of BMW Transmission Control Units. Schreiner ProTech, working in conjunction with SIMEA GmbH, a subsidiary of Siemens, have developed a new, special-purpose pressure compensation seal (PCS) film specifically to allow cooling air flow while providing reliable protection for the sensitive electronics in the automotive transmission control units. SIMEA GmbH produces transmission control units for the German automaker BMW. To provide reliable protection for the sensitive electronics from environmental influences such as road dust, salt, oil, or moisture, they are installed in closed housings. Temperature and climatic changes lead to considerable pressure variations inside the housings, which have an adverse impact on the seals. To prevent the potential ingress of moisture the housings are equipped with vent membranes called pressure compensation seals
(PCS). Typically, these PCSs are injectionmoulded components with an integrated membrane, which must be staged separately and installed by hand in a complex, discrete process step. SIMEA was therefore seeking a more efficient solution, and to this end it awarded a respective development project to Schreiner ProTech. Instead of following the conventional approach of installing the vent membrane as an injection-moulded component assembly, Schreiner ProTech integrated the membrane in a self-adhesive, special-purpose film. This has the advantage of producing some major manufacturing benefits. The self-adhesive PCS films are staged on a roll at the respective production unit, allowing automatic dispensing and application to the component housing. A further major reduction of the required process steps was achieved by the combining the PCS into the nameplate label replacing the previous, separately installed nameplate label.
SpindleShield union reports leakage
D
eublin Co has introduced SpindleShield leak detection for use on sophisticated CNC machines. Coolant unions with SpindleShield employ a unique patent-pending electronic leak detection system that detects coolant problems and allows for rapid machine shutdown. Machining centres with through-coolant spindles require unions to deliver coolant at high pressure through the cutting tool at the cutting surface. For dry running cycles or machining operations with multimedia such as air, minimum quantity lubrication (MQL) or coolant, unions such as the patented Pop-Off and patent-pending AutoSense, a technology that separates the seals in the absence of coolant and allow indefinite dry run or multi-media capabilities may be used.
During each cycle from one mode to the other, a minute amount of coolant spills out, which must be collected and drained. Excessive leakage, if not detected, may leak past the spindle seals and eventually contaminate and damage the spindle bearings. SpindleShield protects the spindle and prevents replacement of spindle bearings by allowing rapid, automatic shutdown of machines. The system can be integrated into any standard system bus. Contact: Deublin Co, 2050 Norman Drive, West, Waukegan, IL 60085-6747, USA. Tel: +1 847 689 8600, Fax: +1 847 689 8690, Email: [email protected], Web: www.deublin.com
The new, special-purpose pressure compensation seal film is designed to specifically allow cooling air flow while providing reliable protection for the sensitive electronics of a transmission control unit.
Contact: Schreiner ProTech, Bruckmannring 22, D-85764 Oberschleissheim, Germany, Tel: +49 89 31584 0, Fax: +49 89 31584 5166, Email: [email protected], Web: www.schreiner-protech.com
Contents News
1–6, 16
In Brief Company News
3 5–6
Conferences & Courses
6
Features Low temperature sealing capability of elastomer O-rings Sealing for the food and beverage industry
Patents Events Calendar
7 11
14–15 16
ISSN 1350-4789/08 © 2008 Elsevier Ltd. All rights reserved. This journal and the individual contributions contained in it are protected under copyright by Elsevier Ltd, and the following terms and conditions apply to their use: Photocopying Single photocopies of single articles may be made for personal use as allowed by national copyright laws. Permission of the publisher and payment of a fee is required for all other photocopying, including multiple or systematic copying, copying for advertising or promotional purposes, resale, and all forms of document delivery. Special rates are available for educational institutions that wish to make photocopies for non-profit educational classroom use.