CN2499219Y - Extruding and forming fixed diameter device for steel-plastic composite pipe using perforated steel pipe as skeleton - Google Patents
Extruding and forming fixed diameter device for steel-plastic composite pipe using perforated steel pipe as skeleton Download PDFInfo
- Publication number
- CN2499219Y CN2499219Y CN01263303U CN01263303U CN2499219Y CN 2499219 Y CN2499219 Y CN 2499219Y CN 01263303 U CN01263303 U CN 01263303U CN 01263303 U CN01263303 U CN 01263303U CN 2499219 Y CN2499219 Y CN 2499219Y
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- core
- skeleton
- pipe
- core mould
- negative pressure
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Abstract
The utility model relates to an extruding and forming diameter-fixing device of a steel plastic compound pipe using perforated steel pipes as a skeleton, which is composed of an inner diameter-fixing core mould and an outer diameter-fixing sleeve. The utility model is characterized in that the inner diameter-fixing core mould extends from an extruder head, the outer diameter-fixing sleeve and the extruder head are separately arranged, and are sheathed on the end of the inner diameter-fixing core mould. The inner diameter-fixing core mould is in a hollow tubular structure, and the inner cavity of the tubular core mould is a cooling water circulation channel. The end of the tubular core mould is provided with a negative pressure cavity, and air current through holes are arranged on the side wall of the negative pressure cavity. The utility model makes it is possible for extruding and forming steel plastic compound pipes using perforated steel pipes as a skeleton to be normally produced, and hugely improves the quality of products, and forming pipe materials are provided with smooth inner walls and high precision inner and outer diameter dimension.
Description
Technical field:
The utility model relates to the diameter-setting equipment in the extrusion molding.
Background technology:
With the perforation steel pipe be the steel-plastics composite pipe of skeleton because intensity height, good corrosion resistance, light weight, steel are moulded compound fully many advantages such as do not separate, more and more receive publicity.The production process of this type of tubing mainly comprises three parts, and promptly the moulding of steel pipe, steel pipe and plastics is compound, and the sizing moulding after compound.Wherein, the moulding of steel pipe is to make it become tubulose after the pressure roller of punched steel plate by reducing gradually, to be steel pipe after the welding.It is that steel pipe is passed through plastic extruder continuously that steel is moulded compound, utilizes the pressurization that rotatablely moves of screw rod, will plastify good molding materials continuously and extrude mold from the machine barrel of extruder.These two parts are ripe traditional handicraft.
Because the existence of head internal pressure, in a single day the parison in mouthful mould leaves a mouthful modular constraint, just die swelling can take place.Therefore, the diameter-setting equipment of one of above-mentioned three parts is most important for its moulding.But, in the prior art, the time regular meeting produce be: or owing between the lateral wall of the inwall of shaping pipe and core and not exclusively applying, cause steel to mould segregation phenomenon; , form bondingly between tubing parison and the core, and make pipe material inner wall coarse.Up to now, also do not have a kind of diameter-setting equipment can be suitable for this type of tubing production needs, produce qualified high-quality extrusion molding steel-plastics composite pipe.
Summary of the invention:
Technical problem to be solved in the utility model is that providing a kind of is the composite metal plastic pipe extrusion molding diameter-setting equipment of skeleton with the perforation steel pipe, is used to make high-quality steel-plastics composite pipe, makes shaping pipe inner wall smooth, inside/outside diameter size precision height.
The technical scheme that the utility model technical solution problem is adopted is:
The utility model is made of interior sizing core and outer calibration sleeve.
Design feature of the present utility model is:
A, described interior sizing core extend from extruder head, and described outer calibration sleeve separates setting with extruder head; The end of sizing core in being set in;
B, described interior sizing core are hollow tubular structures, and the inner chamber of tubular core mold is the cooling water circulation canal; The end of tubular core mold is provided with negative pressure cavity, offers the air-flow through hole on the sidewall of negative pressure cavity;
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the utility model passes through to adopt the hollow tubular core rod, and vacuum cavity is set in core rod, improves the inwall of shaping pipe and the applying degree between the mould heart lateral wall effectively.Thereby improved the smooth degree of shaping pipe inwall significantly, improved its internal diameter size precision.Also make shaping pipe more closely knit, even.
2, the utility model passes through to adopt the hollow tubular core rod, and the inner chamber of core rod is the cooling water circulation canal.Cool off implementing pressure by the cooling water that therefrom flows through attached to the outer pipe to be formed of core.Thereby avoided the bonding of material effectively, do not stopped up the negative-pressure air-flow through hole, thereby made the generation negative pressure become possibility, improved the smooth degree of shaping pipe madial wall at mandrel surface.Simultaneously, because enforcement is cold by force, shaping speed improves greatly.
3, the utility model China and foreign countries calibration sleeve separates setting with extruder head, moulds setting in the tubing parison that leaves mouthful mould carries out in interior sizing core fast, simultaneously by outer calibration sleeve, implements to mould setting outward, and it is simple and reasonable.
The drawing explanation:
Accompanying drawing is the utility model structural representation.
The specific embodiment:
Referring to accompanying drawing, present embodiment is made of interior sizing core 1 and outer calibration sleeve 2.Interior sizing core 1 extends from extruder head 3.Outer calibration sleeve 2 separates setting with extruder head 3; The end of sizing core 1 in outer calibration sleeve 2 is set in.
Shown in the figure, interior sizing core 1 is a hollow tubular structures.
The inner chamber of tubular core mold 1 has the cooling water circulation canal.In the present embodiment, the turnover mouth of pipe of cooling water all be positioned at core 1 to go into mould distolateral, in the cavity of core rod 1, pipe 7 in being provided with.Cooling water is introduced from interior pipe 7, draws along the madial wall of hollow core rod 1, carries out heat exchange when drawing, to implement to force cooling attached to the tubing on core 1 lateral wall.
The end of tubular core mold 1 is provided with negative pressure cavity 4, offers air-flow through hole 5 on the sidewall of negative pressure cavity 4.Air-flow through hole 5 is uniform on the circumference of negative pressure cavity 4 sidewalls.The tubing that is positioned at air-flow through hole 5 positions does not solidify as yet fully.Herein, the existence of negative pressure cavity 4 can make pipe material inner wall be close to the lateral wall depanning and the moulding of core in the core.According to this, can reach the purpose of smooth inner wall, accurate internal diameter size.
At the manufacturing of continuously shaped steel-plastics composite pipe, in the present embodiment, core 1 can run through extruder head 3, imports a side being positioned at the holed metal skeleton, is fixed on the frame outside the head 3 by core support 6.
In concrete the enforcement, adopt traditional handicraft, the holed metal skeleton is progressively to be welded after the moulding by the metallic plate of boring a hole, and core 1 should extend to the opening before the holed metal skeleton welds as yet, so that core 1 fixedly becomes possibility outside carrying out on frame with its fixed support 6.This fixed form is reliable and stable.
In the forming process, the holed metal skeleton is extruded from extruder head continuously with the plastics materials from the fusion of extruder, becomes the tubing parison.
The tubing parison obtains sizing rapidly in the internal diameter core, simultaneously further outer sizing and moulding in the calibration sleeve outside.
Claims (3)
1, be the composite metal plastic pipe extrusion molding diameter-setting equipment of skeleton with the perforation steel pipe, constitute, it is characterized in that by interior sizing core (1) and outer calibration sleeve (2):
Sizing core (1) extends from extruder head (3) in described, and described outer calibration sleeve (2) separates setting with extruder head (3); The end of sizing core (1) in being set in;
Sizing core (1) is a hollow tubular structures in described, and the inner chamber of tubular core mold (1) is the cooling water circulation canal; The end of tubular core mold (1) is provided with negative pressure cavity (4), offers air-flow through hole (5) on the sidewall of negative pressure cavity (4);
2, composite metal plastic pipe extrusion molding diameter-setting equipment according to claim 1 is characterized in that described air-flow through hole (5) is uniform on the circumference of negative pressure cavity sidewall.
3, composite metal plastic pipe extrusion molding diameter-setting equipment according to claim 1 is characterized in that described core (1) runs through extruder head (3), imports a side being positioned at the holed metal skeleton, is fixed on the frame outside the head by core support (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01263303U CN2499219Y (en) | 2001-10-16 | 2001-10-16 | Extruding and forming fixed diameter device for steel-plastic composite pipe using perforated steel pipe as skeleton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01263303U CN2499219Y (en) | 2001-10-16 | 2001-10-16 | Extruding and forming fixed diameter device for steel-plastic composite pipe using perforated steel pipe as skeleton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2499219Y true CN2499219Y (en) | 2002-07-10 |
Family
ID=33670912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01263303U Expired - Fee Related CN2499219Y (en) | 2001-10-16 | 2001-10-16 | Extruding and forming fixed diameter device for steel-plastic composite pipe using perforated steel pipe as skeleton |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2499219Y (en) |
-
2001
- 2001-10-16 CN CN01263303U patent/CN2499219Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |