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Winding die

A mold and mandrel technology, applied in the field of winding molds, can solve problems such as reducing winding efficiency, achieve the effects of reducing processing allowance, avoiding abnormal yarn arrangement, and reducing production costs

Pending Publication Date: 2018-07-24
JIANGSU SHENMA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It will be designed as a large tapered tube. Due to the large taper of this type of insulating tube, the winding mandrel used can only be wound one at a time, which greatly reduces the winding efficiency.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figure 1 to Figure 3 As shown, the winding mold 100 of this embodiment includes a mandrel 110, and the mandrel 110 is provided with at least one groove 111 around the axial direction of the mandrel 110. The groove 111 is covered with a protective layer 112, and the protective layer 112 completely covers the concave. Groove 111.

[0033] At least one groove is arranged on the core mold of the winding mold, and the protective layer is covered on the groove. After the insulating tube is wound, the cutting position can be positioned according to the position of the groove on the mandrel, so as to avoid multiple scars on the mandrel caused by different cutting positions. At the same time, the groove leaves a cutting space for cutting the insulating tube, which completely solves the problem of cutting and scratching the mandrel. Furthermore, grooves are set on the mandrel according to requirements, and at least two products can be produced with only one winding, wh...

Embodiment 2

[0058] Such as Figure 4 As shown, the structure of the winding mold 200 in this embodiment is similar to that of the winding mold 100 in Embodiment 1, wherein in order to highlight the groove structure, the protective layer is not shown. Here, the same structure will not be repeated here. The difference lies in that the cross-sectional shapes of the core mold segments 212 and 213 on both sides of the groove 211 on the core mold 210 in the second embodiment are different.

[0059] Wherein, the vertical cross-sectional shapes of the core mold segments 212 and 213 on both sides of the groove 211 are different.

[0060] In this embodiment, the vertical cross-sectional shape of the core mold segment 212 is a quadrangle, and the vertical cross-sectional shape of the core mold segment 213 is a circle. When it is actually necessary to produce two types of insulating tubes with different cross-sectional shapes, it is not necessary to use two winding dies with different cross-section...

Embodiment 3

[0064] Such as Figure 5 As shown, the structure of the winding mold 300 in this embodiment is similar to that of the winding mold 100 in Embodiment 1, wherein in order to highlight the groove structure, the protective layer is not shown. Here, the same structure will not be repeated here. The difference is that the lengths of the mandrel sections 312 and 313 on both sides of the groove 311 of the mandrel 310 of the winding mold 300 in the third embodiment are different.

[0065] In this embodiment, the groove 311 is located at one-third of the core mold 310 along the core mold 310 , and is disposed close to the core mold segment 312 .

[0066] After the insulating tube is wound on the mandrel 311 , the insulating tube can be accurately cut according to the specific position where the groove 311 is located at one-third of the mandrel 310 . It prevents different scratches on the mandrel 310 caused by different cutting positions, and avoids affecting the quality of the inner w...

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Abstract

The invention discloses a winding die. The winding die comprises a core die, wherein the core die is provided with at least one groove for axially surrounding the core die for one circle; a protectivelayer is covered on each groove to completely shield the groove. The winding die has the advantages that the scratch to the core die in the stripping and cutting process is avoided; at least two products can be produced by one-time winding, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of power transmission insulation equipment, in particular to a winding mold. Background technique [0002] At present, large-diameter composite insulating pipes usually adopt a winding forming process. After the winding is completed, the winding tube needs to be cut first and then demolded. Cutting before demolding is easy to scratch the mandrel during cutting, and at the same time, the cutting position is inconsistent each time, and it is easy to produce scars at different positions on the surface of the mandrel, which will affect the quality of the inner wall of the insulating tube wound next time. [0003] Among them, for some insulating pipes with special performance requirements, such as oil-filled bushing composite insulators with high requirements on mechanical properties, electrical properties and structure. It will be designed as a large tapered tube. Due to the large taper of this type of insulating tube, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C53/82
CPCB29C53/821
Inventor 马斌罗志佳方江王丹枫王亮董积信黄兵
Owner JIANGSU SHENMA ELECTRIC CO LTD