CN206481016U - A kind of anti-fold thermal contraction bus-bar casing tube - Google Patents
A kind of anti-fold thermal contraction bus-bar casing tube Download PDFInfo
- Publication number
- CN206481016U CN206481016U CN201720112838.9U CN201720112838U CN206481016U CN 206481016 U CN206481016 U CN 206481016U CN 201720112838 U CN201720112838 U CN 201720112838U CN 206481016 U CN206481016 U CN 206481016U
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- layer
- bus
- external coating
- casing tube
- hot melt
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Abstract
A kind of anti-fold thermal contraction bus-bar casing tube, is made up of successively hot melt adhesive layer, shrinkage layer and external coating, and the external coating is the outermost layer of tube wall, and shrinkage layer is located between external coating and hot melt adhesive layer, and hot melt adhesive layer is located at the innermost layer of tube wall.By setting shrinkage layer and hot melt adhesive layer in thermal contraction bus-bar casing tube, when bus-bar casing tube is heated, PUR is melted out, shrinkage layer shrinks simultaneously, both are not in relative displacement after clad contraction, eliminate the generation of fold simultaneously by bus-bar casing tube banding on copper bar.
Description
Technical field
The utility model is related to a kind of thermal contraction bus-bar casing tube, more particularly to a kind of anti-fold thermal contraction bus-bar casing tube, category
In technical field of electric equipment.
Background technology
Have in electrical equipment site operation, often need copper bar being converted into various angles, there is 90 degree of list, continuous several 90
Degree, spacial special-shaped angle etc., heat-shrink tube is covered after bending again, heat-shrinkable T bush can prevent short caused by the toys such as mouse, snake
Road failure, prevents corrosion of the chemical substances such as acid, alkali, salt to busbar, adapts to the development trend of switch cubicle miniaturization.Technological requirement
Bus-bar casing tube surface after pyrocondensation should it is smooth, without cracking, without pasting cold phenomenon, and shrink uniform, surface is without burned vestige, folding
Crook occurs without fold.But when installing more than 35KV pyrocondensation copper bar pipe, because its tube wall is very thick, and heat-shrink tube
Material it is all harder, heating gun is difficult to accomplish uniform heating, causes to go out when copper bar bending part bus-bar casing tube shrinks during processing
The phenomenon of existing fold.The method for solving copper bar bending part buckling problems at present is usually the sleeve pipe for customizing bending part shape, and this is needed
Size is provided to heat-shrink tube production man, reorder cycle is long, and cost is high, can also cause certain waste of material.Another scheme
It is that under 90 degree of bending part pyrocondensations, will first place into baking in streamline, but qualification rate is low, and operating efficiency is not high.
The content of the invention
The purpose of this utility model is there is provided one kind in thermal histories, shrinks uniform, prevents in bending part formation pleat
The anti-fold thermal contraction bus-bar casing tube of wrinkle.
To realize object above, the technical solution adopted in the utility model is：A kind of anti-fold thermal contraction bus-bar casing tube, institute
State anti-fold thermal contraction bus-bar casing tube to be made up of successively hot melt adhesive layer, shrinkage layer and external coating, the external coating is tube wall
Outermost layer, shrinkage layer be located between external coating and hot melt adhesive layer, hot melt adhesive layer be located at tube wall innermost layer, the outer cladding
Layer, the thickness proportion of shrinkage layer are 1:0.3 to 1:Between 1, the thickness proportion of the external coating and hot melt adhesive layer is 1:0.1 to
1:Between 0.5, further, the external coating, the thickness proportion of shrinkage layer are 1:0.5 to 1:Between 0.8, the outer cladding
Layer is with the thickness proportion of hot melt adhesive layer 1:0.3 to 1:Between 0.4, further, the external coating thickness is in 0.2-0.6mm
Between.
Positive beneficial effect of the present utility model is：By setting shrinkage layer and PUR in thermal contraction bus-bar casing tube
Layer, when bus-bar casing tube is heated, PUR is melted out, while shrinkage layer shrinks, both simultaneously by bus-bar casing tube banding on copper bar,
As temperature is raised, external coating is started to shrink at, because shrinkage layer fixes the relative position of external coating and copper bar, outsourcing
Coating is not in relative displacement after shrinking, and eliminates the generation of fold.Copper bar and thermal contraction have been filled up after hot melt adhesive layer cooling
Slight void between bus-bar casing tube, plays fastening and sealedly effect, the utility model is more suitable for high salt high corrosion
Place is used.In actual applications, the thickness proportion of external coating, shrinkage layer is 1:0.3 to 1:Between 1, external coating and heat
The thickness proportion of melt layer is 1:0.1-1:Between 0.5, using effect is optimal, and external coating thickness can between 0.2-0.6mm
With the effect for reaching good insulation and protecting copper bar.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Embodiment
In order to more fully explain implementation of the present utility model, embodiment of the present utility model presented below, these realities
It is only to illustrate of the present utility model to apply example, and scope of the present utility model is not limited.
Marked with reference to accompanying drawing explanation further details of to the utility model, in accompanying drawing：1. hot melt adhesive layer；2. shrink
Layer；3. external coating.As shown in the figure：A kind of anti-fold thermal contraction bus-bar casing tube, the anti-fold thermal contraction bus-bar casing tube is by warm
Melt layer 1, shrinkage layer 2 and external coating 3 are constituted successively, and the external coating 3 is the outermost layer of tube wall, and shrinkage layer 2 is located at outer
Between clad 3 and hot melt adhesive layer 1, hot melt adhesive layer 1 is located at the innermost layer of tube wall, the external coating 3, the thickness of shrinkage layer 2
Ratio is 1:0.31 to 1:Between 1, the thickness proportion of the external coating 3 and hot melt adhesive layer 1 is 1:0.1-1:Between 0.5；Make
For one preferred technical scheme of the utility model, the external coating thickness is between 0.2-0.6mm.
In the present embodiment, external coating and shrinkage layer select material contracting with heat, are made using double-layer coextrusion manufacturing process,
From shrink layer material starting shrinkage temperature be less than external coating material, shrink layer material shrinkage ratio it is identical with clad or
Slightly above clad, shrinkage layer can select crosslinked polyolefin materials, and clad can select PET material contracting with heats, melten gel layer choosing
With the relatively low EVA hot-melt adhesive of fusing point, EVA hot-melt adhesive layer starts softening, hot melt adhesive layer and copper bar after softening in temperature rise to 60 degree
Between start bonding, as temperature is raised, shrinkage layer shrinks banding copper bar, and last external coating, which shrinks, completes heat-shrink tube processing behaviour
Make.
After embodiment of the present utility model is described in detail, one of ordinary skilled in the art is clearly understood that,
Above-mentioned claim is not departed from various change and modification can be carried out under spirit, it is all according to technical spirit of the present utility model
Any simple modification, equivalent variations and the modification made to above example, belong to the scope of technical solutions of the utility model,
And the utility model is also not only restricted to the embodiment of example in specification.
Claims (3)
1. a kind of anti-fold thermal contraction bus-bar casing tube, it is characterised in that：The anti-fold thermal contraction bus-bar casing tube by hot melt adhesive layer,
Shrinkage layer and external coating are constituted successively, and the external coating is the outermost layer of tube wall, and shrinkage layer is located at external coating and hot melt
Between glue-line, hot melt adhesive layer is located at the innermost layer of tube wall, and the external coating, the thickness proportion of shrinkage layer are 1:0.3 to 1:1 it
Between, the thickness proportion of the external coating and hot melt adhesive layer is 1:0.1 to 1:Between 0.5.
2. a kind of anti-fold thermal contraction bus-bar casing tube according to claim 1, it is characterised in that：The external coating, receipts
The thickness proportion of contracting layer is 1:0.5 to 1:Between 0.8, the thickness proportion of the external coating and hot melt adhesive layer is 1:0.3 to 1:
Between 0.4.
3. a kind of anti-fold thermal contraction bus-bar casing tube according to claim 1, it is characterised in that：The external coating thickness
Between 0.2-0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720112838.9U CN206481016U (en) | 2017-02-07 | 2017-02-07 | A kind of anti-fold thermal contraction bus-bar casing tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720112838.9U CN206481016U (en) | 2017-02-07 | 2017-02-07 | A kind of anti-fold thermal contraction bus-bar casing tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206481016U true CN206481016U (en) | 2017-09-08 |
Family
ID=59747597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720112838.9U Expired - Fee Related CN206481016U (en) | 2017-02-07 | 2017-02-07 | A kind of anti-fold thermal contraction bus-bar casing tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206481016U (en) |
-
2017
- 2017-02-07 CN CN201720112838.9U patent/CN206481016U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170908 Termination date: 20180207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |