CN203743651U - Steel-plastic bellows - Google Patents
Steel-plastic bellows Download PDFInfo
- Publication number
- CN203743651U CN203743651U CN201420135413.6U CN201420135413U CN203743651U CN 203743651 U CN203743651 U CN 203743651U CN 201420135413 U CN201420135413 U CN 201420135413U CN 203743651 U CN203743651 U CN 203743651U
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- China
- Prior art keywords
- steel
- plastic
- band
- sides
- strip
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- Expired - Fee Related
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Abstract
The utility model relates to a steel-plastic bellows. The steel-plastic bellows comprises a plastic pipe wall formed by spirally coiling a plastic board strip, wherein the two sides of the plastic board strip are overlap joint parts; the overlap joint parts on the two sides of the plastic board strip are in overlap joint after being coiled; protrusions are arranged on the plastic pipe wall; steel strips are spirally wound between the protrusions; the top of each protrusion is provided with a bent part bending towards the corresponding steel strip; the outer side of each steel strip is wrapped with a prefabricated plastic cladding strip; the two sides of each plastic cladding strip are bonded to the protrusions; the cladding strips and the steel strips can move relatively; the two edges of each steel strip are provided with upward bent parts. According to the steel-plastic bellows, the two edges of each steel strip are provided with the upward bent parts, so that the anti-pressure ability of the steel strips is enhanced, when the outer surface of the bellows bears large pressure, the bottoms of the steel strips, namely the contact portions of the steel strips and the plastic pipe wall extend outwards, the bent parts of the two edges of each steel strip downwards turn over, the sharp positions of the two edges of each steel strip inwards curl, and consequently the protrusions on the plastic pipe wall are not prone to being pierced.
Description
Technical field
The utility model relates to a kind of steel and moulds bellows.
Background technique
As steel plastic drain pipe, the advantage of steel band enhanced polyethylene (PE) bellows is more significant, such as ring stiffness is high, corrosion-resistant, lightweight, cost compare is low etc.But it also has some shortcomings: pipe production is out difficult to deposit afterwards---deposit and surpass one month with regard to easy cracking, also have complex process, inner layer tube wall is in uneven thickness, and equipment operating is poor, and waste product pipeline can not be recycled etc.
Why steel band enhanced polyethylene (PE) bellows ftractures, because its structure is that steel band surface layer polyethylene is by adhesive and steel band tight bond, because polyethylene and steel band expansion coefficient differ from 10 times more than, when temperature variation (as poor round the clock), the two expands and the inconsistent and drawing crack of shrinkage degree.
In order to address the above problem, China Patent No. is that 201120345808.5 patent discloses a kind of assembled steel-plastic corrugated pipe, comprise the plastic tube wall being rolled by plastic board/belt spiral, plastic board/belt both sides are wherein overlap, after having rolled, the overlap of plastic board/belt both sides overlaps mutually, on plastic tube wall, there is projection, between projection, spiral winding has reinforcement steel band, kink in the oriented steel band bending of convex top, strengthening being coated with the prefabricated plastic overmold band of one deck outside steel band, the two ends of plastic overmold band are bonded in projection, coated band and reinforcement steel band can relative movement.Plastic overmold band can protect steel band not corroded, and between coated band and steel band, non-caked again between steel band and coated being with---both are relative free, so just can be by pipeline drawing crack when temperature variation.But also there is a shortcoming in above-mentioned assembled steel-plastic corrugated pipe: when bellows outer surface is under pressure, strengthen the distortion downwards of steel band pressurized, making to strengthen steel band two edges extends to both sides, now strengthen the sharp-pointed place of two edges of steel band easily by the protruding bursting on plastic tube wall, or make plastic overmold band and protruding bonding part occur cracking phenomena.
Model utility content
Technical problem to be solved in the utility model is: provide the good steel of a kind of anti-pressure ability to mould bellows.
For addressing the above problem, the technical solution adopted in the utility model is: steel is moulded bellows, comprise the plastic tube wall being rolled by plastic board/belt spiral, plastic board/belt both sides are wherein overlap, after having rolled, the overlap of plastic board/belt both sides overlaps mutually, on plastic tube wall, there is projection, between projection, spiral winding has steel band, kink in the oriented steel band bending of convex top, in steel band outside, be coated with the prefabricated plastic overmold band of one deck, the both sides of plastic overmold band are bonded in projection, coated band and steel band can relative movement, there is bending part upwards in the place, two edges of described steel band.
Match with the convex shape on plastic tube wall in the both sides of described plastic overmold band, and the both sides of plastic overmold band overlap mutually.
The both sides of described plastic overmold band are provided with the step cooperatively interacting.
The beneficial effects of the utility model are: above-mentioned steel is moulded bellows, between its coated band and steel band, non-caked between steel band and coated being with---and both are relative free, so just can be by pipeline drawing crack when temperature variation.There is bending part upwards in the place, two edges of its steel band, thereby strengthened the anti-pressure ability of steel band, even when bellows outer surface is subject to larger pressure, the bottom of steel band is that the contacting part of steel band and plastic tube wall stretches out, the bending part of the two edges of steel band overturns downwards, make the sharp-pointed place of two edges of steel band inwardly curling, thereby be not easy the protruding bursting on plastic tube wall.In addition, the both sides of its plastic overmold band overlap mutually, and the tube wall that makes whole steel mould bellows is not having the part of steel band relatively thick yet, thereby have guaranteed that steel moulds the quality of bellows.
Accompanying drawing explanation
Fig. 1 is tube wall sectional view of the present utility model;
In figure: 1, plastic tube wall, 2, projection, 3, steel band, 4, kink, 5, plastic overmold band, 6, bending part, 7, step.
Embodiment
Below by specific embodiment, steel described in the utility model being moulded to bellows is described in further detail.
As shown in Figure 1, steel is moulded bellows, comprise the plastic tube wall 1 being rolled by plastic board/belt spiral, plastic board/belt both sides are wherein overlap, after having rolled, the overlap of plastic board/belt both sides bonds together mutually with poly-hydrocarbon material, on plastic tube wall 1, there is projection 2, at 2 spiral windings of projection, there is steel band 3, kink 4 in protruding 2 oriented steel band 3 bendings in top, in steel band 3 outsides, be coated with the prefabricated plastic overmold band 5 of one deck, the both sides of plastic overmold band 5 are bonded in projection 2, coated band and steel band 3 can relative movement, there is bending part 6 upwards in the place, two edges of described steel band 3.
As preferred version, match with projection 2 shapes on plastic tube wall 1 in the both sides of described plastic overmold band 5, and the both sides of plastic overmold band 5 overlap mutually.The both sides of described plastic overmold band 5 are provided with the step 7 cooperatively interacting.Cooperation by step 7 overlaps, and has not only guaranteed the neat of overlap joint, and the both sides of plastic overmold band 5 overlap mutually, and the tube wall that makes whole steel mould bellows do not having the part of steel band 3 relatively thick yet, thereby has guaranteed that steel moulds the quality of bellows.
Above-mentioned steel is moulded bellows, between its coated band and steel band 3, non-caked between steel band 3 and coated being with---and both are relative free, so just can be by pipeline drawing crack when temperature variation.There is bending part 6 upwards in the place, two edges of its steel band 3, thereby strengthened the anti-pressure ability of steel band 3, even when bellows outer surface is subject to larger pressure, the bottom of steel band 3 is that steel band 3 stretches out with the contacting part of plastic tube wall 1, the bending part 6 of the two edges of steel band 3 overturns downwards, make the sharp-pointed place of two edges of steel band 3 inwardly curling, thereby be not easy 2 burstings of the projection on plastic tube wall 1.
The above embodiments are principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not for limiting the utility model; It should be pointed out that for the person of ordinary skill of the art, not departing under the prerequisite of the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (3)
1. steel is moulded bellows, comprise the plastic tube wall being rolled by plastic board/belt spiral, plastic board/belt both sides are wherein overlap, after having rolled, the overlap of plastic board/belt both sides overlaps mutually, on plastic tube wall, there is projection, between projection, spiral winding has steel band, kink in the oriented steel band bending of convex top, in steel band outside, be coated with the prefabricated plastic overmold band of one deck, the both sides of plastic overmold band are bonded in projection, coated band and steel band can relative movement, it is characterized in that: the place, two edges of described steel band exists the bending part making progress.
2. steel according to claim 1 is moulded bellows, it is characterized in that: match with the convex shape on plastic tube wall in the both sides of described plastic overmold band, and the both sides of plastic overmold band overlap mutually.
3. steel according to claim 2 is moulded bellows, it is characterized in that: the both sides of described plastic overmold band are provided with the step cooperatively interacting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135413.6U CN203743651U (en) | 2014-03-24 | 2014-03-24 | Steel-plastic bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135413.6U CN203743651U (en) | 2014-03-24 | 2014-03-24 | Steel-plastic bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743651U true CN203743651U (en) | 2014-07-30 |
Family
ID=51343452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135413.6U Expired - Fee Related CN203743651U (en) | 2014-03-24 | 2014-03-24 | Steel-plastic bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743651U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035922A (en) * | 2017-05-02 | 2017-08-11 | 安徽国登管业科技有限公司 | A kind of modified steel strip reinforced bellows |
| CN114877139A (en) * | 2022-04-14 | 2022-08-09 | 湖北兴欣科技股份有限公司 | Steel-plastic composite spiral corrugated pipe |
-
2014
- 2014-03-24 CN CN201420135413.6U patent/CN203743651U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035922A (en) * | 2017-05-02 | 2017-08-11 | 安徽国登管业科技有限公司 | A kind of modified steel strip reinforced bellows |
| CN114877139A (en) * | 2022-04-14 | 2022-08-09 | 湖北兴欣科技股份有限公司 | Steel-plastic composite spiral corrugated pipe |
| CN114877139B (en) * | 2022-04-14 | 2023-11-21 | 湖北兴欣科技股份有限公司 | Steel-plastic composite spiral corrugated pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190428 Address after: 215600 Zhangjiagang Dane Machinery Co., Ltd. No. 17 Guotai North Road, Yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: Zhangjiagang Dane Machinery Co., Ltd. Address before: 215625 Zhangjiagang Changda Industrial Co., Ltd. of Jinle Road, Jinfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: ZHANGJIAGANG CITY CHANGDA INDUSTRY CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20200324 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |