kiefel.sr.Zum Inhalt kiefel.sr.Zum Inhaltsverzeichnis kiefel.sr.Zur Hautpnavigation
KIEFEL GmbH
菜单
Home
  • Medical & Pharma
    Back Medical & Pharma
    • Form-Fill-Seal - SOLUTIONPERFORMER
    • Medical Technology-R&D Center
  • Appliance
    Back Appliance
    • Appliance Kontakte
  • Polymer Packaging
    Back Polymer Packaging
    • SPEEDFORMER KTR 6.2 Speed
  • Service
  • Digitalization
  • Sustainability
  • 销售联系方式
  • Customer portal - Kiefel Portal
  • 新闻
  • 活动
  • 作为供应商申请
  • 关于职业页面
  • Company
  • 合规
KIEFEL GmbH
Sudetenstraße 3
83395 Freilassing
Germany

Delivery: Klebingerstraße 5
+49 86 54 78 - 0
info-de@kiefel.com
  • Close
    Brückner Group SE
    LEADING
    TO
    SUCCESS
    了解更多
    Brückner Maschinenbau GmbH
    STRETCHING
    THE
    LIMITS
    了解更多
    Brückner Servtec GmbH
    SERVING
    YOUR
    SUCCESS
    了解更多
    PackSys Global AG
    CREATING
    PACKAGING TECHNOLOGY
    了解更多
  • Customer Portal
  • 职业
  • CN
    Deutsch English Dutch
  • 关闭

    Your search

    What are you searching for?

Contact us!
Table Of Content
    新闻
    1. Kiefel
    2. 新闻
    3. Innovative cooling concept reduces maintenance costs
    请注意此信息只有英文版本
    关注我们:

    Innovative cooling concept reduces maintenance costs

    28 Jan 2020

    New situation-specific cooling of thermoforming tools reduces wear

    It's annoying when a thermoforming tool wears out quickly, the service life is too short, the maintenance and resulting costs are too high. This can often be traced to the tool cooling. The current systems usually inaccurately regulate and record the temperatures. Internal temperatures are the key for wear of fall-through cutting tools.

     

    The specialists at Kiefel, Freilassing, have taken on this problem and developed a solution. The new tool cooling system is fully automatic and sensor-controlled. This innovation has an especially positive effect on tool life and product quality. The tools utilize two separate cooling circuits for the upper and lower tool and an extended sensor system for optimum control. Two pumps and mixer valves supply the two circuits with cooling water; the integrated temperature control ensures optimal tool protection. Start automation is sensor-controlled, completely eliminating overshooting of the lower tool.

     

    The critical moment

    The production start of the machine is the critical moment for the temperature regulation of the tool halves. The cooling integrated in the tool must be capable of compensating heat output that can rapidly rise by up to 40kW. The result: uneven temperature distribution within the tool and a high temperature difference between the two tool halves. The very tight manufacturing tolerances of under 3 μm mean that a temperature difference of only 2° C leads to expansion of the material, causing abrasion and, as a result, wear on the tool. The consequence is obvious: The cutting components of the tool have to be reground prematurely. This represents costs of several thousand euros.

    Previous attempts have failed to satisfactorily solve the problem. Time and again it has been proven: Higher heat input to the lower tool than to the upper tool may lead to the lower tool needing more cooling power than is available. Its temperature rises. The upper tool can maintain its temperature due to the lower heat input. The temperature-induced material expansion of the tool halves means that the gap between the two tool halves shrinks and wear increases. This phenomenon also occurs when the customer's cooling device is subject to rapid, large temperature fluctuations in the provided cooling water.

     

    The solution

    Kiefel has tackled this problem with innovative situation-specific tool cooling. It automatically detects incorrect states and compensates for them e.g. by increasing the temperature of the upper tool when the lower tool temperature increases. The new cooling concept avoids temperature differences between the upper and lower tool.

     

    This is made possible by two different pumps, which supply the two halves of the tool continuously and independently of each other with the maximum possible flow of cooling water. This trick allows the temperature gradients within the tool halves to be kept very low. The temperature of the cooling water is controlled by two separate mixers in the return of the machine, which are controlled by the PLC control. For optimum control, the current temperature values of the tool, the flow and return of the two mixers and the cooling water temperature provided by the customer are cyclically input into the control system. The volume flow in the cooling circuits always remains constant. This control principle constantly provides the optimum cooling water temperature and adjusts the tool temperatures quickly and accurately to the process. Fixtures in particular variable speed pumps or chokes for influencing the flow in the cooling circuits are not installed!

     

    Focus on functioning

    The cooling system distinguishes between four different states:

     

    Standby:

    In standby, the tool temperature is slowly brought to the temperature desired by the operator and then maintained. Ideally it should be 20°C. In order to avoid unwanted condensation on the tool surface, a temperature of > 20 ° C in standby mode is also possible in tropical countries.

     

    Production start:

    This is the most critical situation. At startup, the flow temperature of the cooling water to the tool is initially reduced to prevent excessive heating of the tool. The temperatures and states are compared with the target values at very close intervals, to keep the lower tool temperature below the upper tool temperature. This can lead to minor fluctuations in the tool temperature. To stabilize the process, it is automatically switched to the production state depending on certain criteria.

     

    Production:

    During production, the set target values are adjusted as far as the customer cooling water flow temperature allows. The temperatures of the two tool halves are adjusted and regulated independently of each other at all times. Thus, both tool halves always remain within the tolerance window, guaranteeing a long tool life.

     

    Production stop:

    When the machine is stopped, the cooling capacity is lowered tool-specifically. This prevents excessive cooling and associated condensation on the tool.

     

    Simple and user-friendly

    The Kiefel developers focused on yet another aspect: Operation of the new cooling had to be simple and user-friendly.  They succeeded! The cooling activates automatically and only one important value needs to be input by the operator - the desired tool temperature. [see figure 1]. The constant tool temperature at the start of the machine - even with difficult materials - ensures reliable quality from the start.

    Kiefel successfully lowered tool maintenance costs with enhanced precision sensor technology and a new, innovative control concept, giving its customers a clear advantage.

    Kiefel KMI 2.0 - Die Kühlung aktiviert sich selbstständig und benötigt nur einen wichtigen Eingabewert - die gewünschte Werkzeugtemperatur.
    Kiefel KMI 2.0 - Die Kühlung aktiviert sich selbstständig und benötigt nur einen wichtigen Eingabewert - die gewünschte Werkzeugtemperatur.
    Zwei Pumpen und Mischventile versorgen zwei getrennte Kühlkreisläufe für das Ober- und Unterwerkzeug
    Zwei Pumpen und Mischventile versorgen zwei getrennte Kühlkreisläufe für das Ober- und Unterwerkzeug
    Nächste Generation der Becherformanlage SPEEDFORMER KTR 5.2 Speed
    Nächste Generation der Becherformanlage SPEEDFORMER KTR 5.2 Speed

    Downloads

    Our PDF documents for more detailed information.

    Werkzeugkühlung DE.pdf

    Werkzeugkühlung DE.pdf

    Download
    Tool-Cooling-System EN.pdf

    Tool-Cooling-System EN.pdf

    Download

    More News

    News & information from Kiefel

    18 Mar 2025

    Kiefel Employee Sven Engelmann Awarded the Prestigious SPE President’s Cup

    Award for over 20 years of commitment, including leadership roles and promoting transatlantic partnership in the thermoforming industry. Award ceremony at SPE ANTEC® 2025 in Philadelphia
    了解更多
    10 Mar 2025

    Kiefel invests in the future

    New Customer Innovation Center, strong leadership and 70 years of innovation.
    了解更多
    07 Feb 2025

    Join us at the Kiefel Packaging Dialogue Day APAC 2025!

    We’re thrilled to invite you to the Packaging Dialogue Day APAC 2025—our second event of its kind—on Tuesday, February 11, 2025, at the Brueckner Group Asia-Pacific in Rayong, Thailand.
    了解更多
    19 Nov 2024

    Kiefel strengthens its global market focus with its strategy for the future

    Kiefel GmbH, a market leading company for thermoforming and joining technology and member of the Brückner Group, is consistently pursuing its structural reorientation for the long-term strengthening of its global competitiveness.
    了解更多
    06 Nov 2024

    New SPEEDFORMER KTR 6.2 - up to 50 % higher output with the same footprint & quality

    The new tilting machine SPEEDFORMER KTR 6.2 SPEED for the mass production of polymer cups and coffee capsules - this technology solution provides higher productivity and production versatility while offering 10% energy savings due to optimized...
    了解更多
    05 Nov 2024

    Kiefel is optimizing its product portfolio and expanding its efficient system business

    Kiefel GmbH, a market leading company for thermoforming and joining technology and member of the Brückner Group, is announcing a structural reorientation and therefore an accompanying consolidation of its sites. 
    了解更多
    19 Sep 2024

    Sustainability report paves the way for a successful future

    The Brückner Group has published its latest sustainability report. The voluntary report provides a comprehensive overview of environmental, social and governance (ESG) activities in the 2023 fiscal year.
    了解更多
    02 Sep 2024

    Kiefel the innovation leader under new management: Matt Sieverding becomes CEO

    Kiefel GmbH, a market-leading company for thermoforming and joining technology and a member of the Brückner Group, is undergoing a change in management: Matthias Sieverding, previously CEO/President of the Brückner Group’s USA platform company,...
    了解更多
    13 May 2024

    2024中国国际橡塑展上的创新与成功

    成千上万的观众、全新自动化解决方案的成功演示以及多场签约仪式的举行,标志着我们参加了亚洲最大的塑料与橡胶贸易展览会--2024 中国国际橡塑展。
    了解更多
    07 Mar 2024

    First Packaging Dialogue Day Asia-Pacific: successful event with Kiefel's turnkey solutions

    In a groundbreaking event, Kiefel, turnkey solution provider in the Asia-Pacific region, recently hosted the first-ever Packaging Dialogue Day at the new Brueckner Group Asia-Pacific facility in Rayong, Thailand.
    了解更多
    服务
    • 销售联系方式
    • Login Kiefel Portal
    • 下载
    Wichtige Links
    • Financial Consulting
    • Compliance
    • Sicherheitshinweise für Externe
    Unsere Branchen
    • Medical & Pharma
    • Polymer Packaging
    • Fiber Packaging
    • Appliance
    • Service
    在这里找到我们
    KIEFEL GmbH
    • 版本说明
    • 免责条款
    • 隐私声明
    • General terms and conditions
    © Copyright 2025 KIEFEL GmbH