End-finishing and Tapering Transfer for Defrost Heating Elements

The in-line end finishing and end tapering transfer machine is a fully automated system designed to perform the final processing operations on defrost heating elements directly downstream of the reducing mill.

The machine integrates length measurement, end processing, stretching to final length, end tapering, electrical testing, and laser marking, preparing each heating element for the subsequent vulcanization and assembly processes.

Designed to process heating elements up to 7,000 mm long, the transfer machine is the ideal solution for manufacturing defrost heaters, used for finned heat exchangers and tube bundle heat exchangers, where dimensional accuracy, straightness, and consistent quality are essential.

End-finishing and Tapering Transfer for Defrost Heating Elements

Advantages

The concrete advantages that make the difference

Designed for long heating elements

The machine processes heating elements up to 7 metres in length, ensuring outstanding dimensional accuracy, straightness, and process repeatability even for extra-long products.

Automatic end tapering for vulcanized sealing

The end tapering station prepares both ends of the heating element for the application of vulcanized rubber seals, ensuring a reliable and durable connection between the heating element and the power lead.

Integrated quality control and traceability

Electrical testing and laser marking are performed automatically during the production cycle, guaranteeing product compliance and complete traceability of every heating element.

Details

The Automatic In-line End Finishing and End Tapering Transfer Machine is designed to complete the final processing stages of defrost heating elements directly downstream of the reducing mill.

Heating elements are automatically transferred into the machine and conveyed through a series of synchronized workstations that perform end preparation, length calibration, end tapering, and final inspection before the subsequent manufacturing stages.

The stations include:

  • Length Measurement and Centering Unit: Automatically measures the heating element length and precisely positions each part for the subsequent processing operations.
  • Plug Extraction Unit: Automatically removes the plastic plug used during the filling and reducing processes. An integrated preheating system facilitates extraction, particularly for threaded pins or tightly interference-fitted plugs.
  • Terminal Pin Cutting Unit: Cuts the terminal pins to the required length with high precision, ensuring compliance with the specified dimensional requirements.
  • Stretching Unit: Stretches each heating element to its final calibrated length, ensuring dimensional accuracy and maximum straightness.
  • End Tapering Unit: Reduces the cross-section at both ends of the heating element, preparing them for the application of vulcanized rubber seals that create a reliable seal between the heating element and its lead wire.
  • Electrical Testing Unit: Performs the required electrical tests on each finished heating element, verifying product compliance before the subsequent manufacturing stages.
  • Laser Marking Unit: Permanently marks each heating element with text, QR codes, or Data Matrix codes, ensuring complete product traceability throughout its lifecycle.

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