CN101408268B - U type injection moulding elbow and processing method thereof - Google Patents
U type injection moulding elbow and processing method thereof Download PDFInfo
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- CN101408268B CN101408268B CN2008101222263A CN200810122226A CN101408268B CN 101408268 B CN101408268 B CN 101408268B CN 2008101222263 A CN2008101222263 A CN 2008101222263A CN 200810122226 A CN200810122226 A CN 200810122226A CN 101408268 B CN101408268 B CN 101408268B
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Abstract
The invention discloses a U-shaped injection molding elbow and a processing method; the U-shaped injection elbow consists of an arc-shaped round pipe 1 with the range of 120-175 degrees and two straight round pipes 2 with straight nozzles; the internal diameter f the straight round pipe 2 is more than the internal diameter of the arc-shaped round pipe 1; a die consists of a concave die and a convex die, wherein, the convex die consists of an arc-shaped round convex die with the range of 120-175 degrees and two cylindrical convex dies; the diameter of the arc-shaped round convex die is less than the diameter of the two cylindrical convex dies; the rotation demoulding is adopted by the arc-shaped round convex die part. The U-shaped injection elbow solves the difficult problem of processing the U-shaped injection elbow, and leads the plastic pipe made into snake-shaped pipe heat exchanger to be possible; the radian of the arc-shaped round pipe is not traditional 180 degrees but less than180 degrees; and the demoulding process comprises twice demoulding such as linear demoulding and rotation demoulding.
Description
Technical field
The present invention relates to a parts U type injection moulding elbow of heat exchanger, it can be used for the snakelike coil heat exchanger of all plastics.
Background technique
The serpentine coil heat exchanger is a kind of heat exchanger that generally uses, and almost is the serpentine coil heat exchanger all such as air-conditioner heat exchanger.Part serpentine coil heat exchanger forms by bending, and most of serpentine coil heat exchanger is welded by straight tube and U type elbow.For the casting of metal U type elbow, because of there not being the demoulding problem, so realize easily.And plastic injection piece will keep hollow, certainly exists a demoulding problem.All there is one section straight parallel pipeline section at U type elbow two ends, and are the same with the metal casting elbow as fruit structure, just can't demoulding.Before the present invention, still there is not U type injection moulding elbow.The present invention has changed the structure of U type elbow, by simulation demoulding scheme, has solved and has made the difficult problem of U type injection moulding elbow, thereby plastic tube can have been made the serpentine coil heat exchanger.
Summary of the invention
The invention provides a kind of U type injection moulding elbow and processing method thereof, make the snakelike coil heat exchanger of plastics become possibility.
The technical solution used in the present invention is:
One, a kind of U type injection moulding elbow:
It is made up of by straight pipe arc pipe and two sections mouths of pipe of one section 120～175 degree, and the internal diameter of straight pipe is greater than the curved circular bore.
The straight pipe of described two sections mouths of pipe is parallel to each other, and perhaps its angle is in ± 10 degree.
Two, a kind of processing method of U type injection moulding elbow:
Mould is combined by former and formpiston.Described formpiston is made of one section 120～175 degree curved circular formpiston and two sections cylindrical punch, and curved circular formpiston diameter is less than two sections cylindrical male mode diameters, and the curved circular formpiston partly adopts rotating stripping demoulding.
Described curved circular formpiston and two sections cylindrical punch all have tapering, are convenient to the demoulding.
The effect that the present invention has is:
Solved the difficult problem of processing U type injection moulding elbow, making plastic tube make the serpentine coil heat exchanger becomes possibility; The radian of its arc pipe is not 180 traditional degree, but less than 180 degree, its demoulding technology comprises straight line demoulding and twice demoulding of rotation demoulding.
Description of drawings
Fig. 1 is a U type injection moulding elbow of the present invention.
Fig. 2 a～2c is a straight line demoulding schematic representation of the present invention.
Fig. 3 a～3c is that the present invention rotates the demoulding schematic representation.
Fig. 4 a～4c is 180 traditional degree U type elbow rotation demoulding schematic representation.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, it is made up of the present invention by straight pipe 2 arc pipe 1 and two sections mouths of pipe of one section A section, 120～175 degree, and the internal diameter of straight pipe 2 is greater than arc pipe 1 internal diameter.
The straight pipe 2 of described two sections mouths of pipe is parallel to each other, and perhaps its angle is in ± 10 degree.
A kind of processing method of U type injection moulding elbow, mould is combined by former and formpiston.Described formpiston is made of one section 120～175 degree curved circular formpiston and two sections cylindrical punch, and curved circular formpiston diameter is less than two sections cylindrical male mode diameters, and the curved circular formpiston partly adopts rotating stripping demoulding.
Described curved circular formpiston and two sections cylindrical punch all have tapering, are convenient to the demoulding.
After injection moulding is finished, at first the core body of U type elbow two straight length is extracted out, shown in Fig. 2 a～2c, adopt the rotation demoulding that arc pipeline section core body is released then, shown in Fig. 3 a～3c, in the demoulding process, can not take place to collide between core body and the moulding, and can fully core body be released.
Fig. 4 a～4c is 180 degree U type elbow rotation demoulding schematic representation, it is the present invention's form of metal U type elbow before, if injection moulding elbow also adopts this form, then when demoulding at first core body can and moulding bump, as Fig. 4 b cloud atlas position, actual can't the extraction out, in addition, even do not bump, when core body has entered moulding from another section again when one section is extracted out, shown in Fig. 4 c at 4b cloud atlas position.Therefore, according to the form of metal U type elbow, can not make injection moulding elbow.
Claims (3)
1. U type injection moulding elbow is characterized in that: it is made up of by straight pipe (2) arc pipe (1) and two sections mouths of pipe of one section 120～175 degree, and directly the internal diameter of pipe (2) is greater than arc pipe (1) internal diameter; The straight pipe (2) of described two sections mouths of pipe is parallel to each other, and perhaps its angle is in ± 10 degree.
2. the processing method of a U type injection moulding elbow, mould is combined by former and formpiston, it is characterized in that: described formpiston is made of one section 120～175 degree curved circular formpiston and two sections cylindrical punch, curved circular formpiston diameter is less than two sections cylindrical male mode diameters, and the curved circular formpiston partly adopts rotating stripping demoulding.
3. the processing method of a kind of U type injection moulding elbow according to claim 2 is characterized in that: described curved circular formpiston and two sections cylindrical punch, tapering is all arranged, and be convenient to the demoulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101222263A CN101408268B (en) | 2008-11-04 | 2008-11-04 | U type injection moulding elbow and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101222263A CN101408268B (en) | 2008-11-04 | 2008-11-04 | U type injection moulding elbow and processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101408268A CN101408268A (en) | 2009-04-15 |
| CN101408268B true CN101408268B (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101222263A Active CN101408268B (en) | 2008-11-04 | 2008-11-04 | U type injection moulding elbow and processing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN101408268B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973031B (en) * | 2018-09-30 | 2023-10-20 | 爱康企业集团(上海)有限公司 | One goes out two big circular arc U type internal thread tee bend pipe fitting injection mold |
| WO2021152927A1 (en) * | 2020-01-28 | 2021-08-05 | 日本ピラー工業株式会社 | Resin joint, channel block, and fluid control device |
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2008
- 2008-11-04 CN CN2008101222263A patent/CN101408268B/en active Active
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| Publication number | Publication date |
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| CN101408268A (en) | 2009-04-15 |
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