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Apparatus and method for making pre-shaped insulating sheets intended to be inserted into stator or rotor slots

An insulating sheet and pre-forming technology, applied in the shape/style/structure of winding insulation, laying solid insulation, transportation and packaging, etc., can solve the problems of polluting gas or vapor release, toxicity, environmental pollution, etc.

Active Publication Date: 2012-11-21
TECNOMATIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The use of lubricants also entails some environmental and operator health concerns, since folding the strips in the forming machine requires hot parts suitable for contacting the strips, heating the lubricants can cause the release of toxic or polluting gases or vapors

Method used

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  • Apparatus and method for making pre-shaped insulating sheets intended to be inserted into stator or rotor slots
  • Apparatus and method for making pre-shaped insulating sheets intended to be inserted into stator or rotor slots
  • Apparatus and method for making pre-shaped insulating sheets intended to be inserted into stator or rotor slots

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Embodiment Construction

[0029] In the figures, the same reference numerals are used to designate the same or similar elements.

[0030] For purposes of this application, the term "flat" or "square" strip conductor is used to denote a strip conductor having four substantially flat faces, each joined to an adjacent face, usually by rounded corners.

[0031] Accordingly, the general use of the terms "flat" or "square" or equivalents to describe the cross-section of a strip conductor should not be considered as effectively excluding such strip conductors as having the ability to join substantially flat surfaces. fairly rounded corners. The term "flat conductor" should be understood as a conductor whose distance between two opposing faces is greater than the distance between the remaining two opposing faces. For the purposes of this application, the term "rectangular conductor" should be understood as a generalization of flat conductors and square conductors, given that a square conductor is a special ca...

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Abstract

Apparatus (30) for making pre-shaped insulating sheets (10) for use in a stator or in a rotor comprising shaping elements (40-44) such to produce, starting from a continuous strip (15) made of electrically insulating material having a flat or substantially flat cross section, a strip portion having a cross section comprising a central septum (20) and two lateral portions (21-23, 21'-23') joined to a respective end portion of the central septum (20), each of the lateral portions comprising a first section (21, 21') joined to the central septum (20), a second section (22, 22') joined and perpendicular, or essentially perpendicular, to the first section (21, 21'), a third section (23, 23') joined to the second section (22, 22') and inclined with respect to the latter towards the central septum (20). The apparatus (30) further comprises a pair of opposite rollers (46, 47) having a transverse shaping profile comprising a projecting appendage (56, 57) suitable to be interfaced having a respective portion of the strip (15) facing the central septum (20) and operatively interposable between the central septum (20) and the third inclined section (23, 23').

Description

technical field [0001] The invention relates to a device and a method for manufacturing preformed insulating sheets to be inserted into stator or rotor slots. Background technique [0002] Methods are known for manufacturing stators and rotors for electric vehicles having a stator or rotor core with a plurality of slots and further comprising inserting into said slots and interconnecting in various ways in Rigid bar conductors together to obtain one or more stator or rotor windings. The aforementioned stator and rotor windings with rigid bar conductors are often referred to as bar stator and rotor windings. [0003] When manufacturing a stator or rotor as described above, in order to ensure proper insulation between the different conductors housed in the same slot and / or between the conductors and the inner walls of the slots of the stator or rotor core, it is provided that each is made of electrically insulating material Manufactured, for example, the operation of inserti...

Claims

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Application Information

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IPC IPC(8): H02K3/34H02K15/10B29C53/04
CPCB29L2009/00B29C53/043B29K2995/0007B29L2031/749H02K15/10Y10T156/1008Y10T428/24174
Inventor 桑特·古尔奇奥尼
Owner TECNOMATIC
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