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Method for stamping and stacking sheet metal parts into stack

A plate and plate stacking technology, applied in the direction of electric components, electrical components, feeding devices, etc., can solve problems such as mold damage, achieve the effects of long service time, improve reproducibility, and improve method reliability

Pending Publication Date: 2022-04-05
VOESTALPINE STAHL GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantageously, when the separating element is introduced under the electrical strip, a relatively precise positioning of the separating element is required in order not to cause the separating element to be co-punched, which would also lead to damage to the sequential stamping tool

Method used

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  • Method for stamping and stacking sheet metal parts into stack
  • Method for stamping and stacking sheet metal parts into stack
  • Method for stamping and stacking sheet metal parts into stack

Examples

Experimental program
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Embodiment Construction

[0030] according to figure 1 The first embodiment in , schematically shows a device 1 for carrying out the method according to the invention. The device 1 is used for stacking free-punched first sheet metal parts 2 to form a sheet metal stack 3 . To this end, an electrical steel strip 5 is unwound from the coil 4, which has on one or both of its flat sides 6, 7 a comprehensive, curable polymer adhesive layer 8, 9, i. Mixture layer, such as heat-cured baking varnish, this adhesive layer 8,9 can for example be in figure 1 seen in the enlarged section of .

[0031] Such thermodynamically or thermally curable melt-bonding varnishes or melt-adhesive layers are also known under the designation "baking varnishes". For example, fusion bonded varnishes may have an epoxy resin base. Preferably, the fusion bonding lacquer is a bisphenol-based epoxy resin system with a curing agent, for example with dicyandiamide groups. In particular, the aforementioned fusion-bonded lacquer may be ...

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PUM

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Abstract

The invention relates to a method for press-stacking sheet metal parts (2) into a stack (3). In order to make it easier to separate the joined sheet metal parts (2) into the stack (3), at least one second sheet metal part (20) is second free-punched out in a step prior to the first free-punching, the separating element (19) is pressed back into the region of the electrical strip (5) from which the second sheet metal part (20) has been punched out, and the separating element (19) is pressed out of the electrical strip (5) by means of the first free-punching.

Description

technical field [0001] The invention relates to a method for stamping sheet metal parts into a stack, the method comprising the steps of first free punching a first sheet metal part from an electrical steel strip having on at least one flat side thereof A curable adhesive layer, in particular a heat-curing melt-bonding lacquer layer, then stacks the first sheet metal parts and connects the stacked first sheet material parts, especially materially bonded (stoffschlüssig) Joining, wherein the method has measures for facilitating the separation of the connected first sheet-metal part into a laminate, which includes stacking at least one separating element with the first sheet-metal part. Background technique [0002] It is known from the prior art ( WO 2017 / 060483 A1 ) to arrange separating elements between the first sheet metal parts stacked in the channel after the last stamping stage of the sequential stamping tool. The separation element facilitates the separation of the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D28/02B21D43/22H02K15/02B21D28/22H02K15/12
CPCH02K15/024H02K15/12B21D28/02B21D28/22B21D43/22
Inventor 罗纳德·弗卢克
Owner VOESTALPINE STAHL GMBH
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