CN202398728U - Expansion forming appliance for pipe end - Google Patents
Expansion forming appliance for pipe end Download PDFInfo
- Publication number
- CN202398728U CN202398728U CN2011205700628U CN201120570062U CN202398728U CN 202398728 U CN202398728 U CN 202398728U CN 2011205700628 U CN2011205700628 U CN 2011205700628U CN 201120570062 U CN201120570062 U CN 201120570062U CN 202398728 U CN202398728 U CN 202398728U
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- CN
- China
- Prior art keywords
- head
- expansion
- circular hole
- cylindrical mandrel
- amalgamation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an expansion forming appliance for a pipe end. The expansion forming appliance is used for expanding a pipe component to be expanded from inside and comprises a cylindrical mandrel (2) of which one end is provided with a conical head (1) and an expansion head (3), wherein the expansion head (3) is formed by splicing eight sections of carving sheets (4) which have the same shapes and 45-degree inclined planes; a spliced circular hole (5) is formed in the center of the expansion head (3), and the diameter of the spliced circular hole (5) is smaller than that of a cylindrical section (6) of the cylindrical mandrel (2); when the conical head (1) of the cylindrical mandrel (2) is inserted into the spliced circular hole (5) of the expansion head, the eight sections of carving sheets (4) do expansion motion outwards along the radial direction; the outside of the expansion head (3) is spliced to form three step cylinders from small to large; the end of the minimum step cylinder is subjected to rounding, and a bulged rib (7) winding the small cylinder is arranged in the middle of the minimum step cylinder; and a groove (8) winding the large cylinder is arranged in the middle of the maximum step cylinder, and a spring (9) is sleeved in the groove. The expansion forming appliance is simple in structure and convenient to operate.
Description
Technical field
The utility model relates to and is used for the expanding tool that carries out hole enlargement internally to by the expander parts, is specifically related to a kind of pipe end and expands the moulding utensil.
Background technology
Usually; In the manufacturing process of pipe fittings such as automobile row device tracheae, silencer, air conditioner heat radiator; As being used for, in this expanding tool, generally be to adopt a plurality of rolling members to be retained as on concentric circles to rotate freely with the expanding tool that is engaged in other pipe fitting by the expander parts; Through axle is advanced, each rolling member is gone out by thruster outwardly.And then, roll while each rolling member pushes the inner peripheral surface of pipe, thereby pipe is by hole enlargement.In this expanding tool, design a plurality of rolling members when the inner peripheral surface of pipe rolls, the problem that exists the expander operation to become numerous and diverse such as state invention public announcement of a patent application CN 102233388 A disclosed " expanding tool " in 9 days November in 2011.
The utility model content
The purpose of the utility model is, addresses the above problem, and provides pipe end a kind of simple in structure, easy to operate to expand the moulding utensil.
In order to solve the problems of the technologies described above, the pipe end of the utility model expands the moulding utensil, and comprising: an end has cone headed cylindrical mandrel and a bloated head; The head that expands and carve sheet that have 45 ° inclined-planes the same by the octofoil figure shape is put together; Expand head in be formed centrally the amalgamation circular hole, the diameter of amalgamation circular hole is littler than the cylindrical section diameter of cylindrical mandrel, when the nose cone of cylindrical mandrel inserts in the amalgamation circular hole of the head that expands, eight lobes are carved sheet will radially expand outwardly motion; The appearance amalgamation of above-mentioned bloated head forms three ascending step cylinders; The end rounding of minimum step circle styletable, there is the convex tendon around small column at the middle part; There is the groove around big column at maximum step cylinder middle part, is with spring in the groove.
In the utility model when work, advance cylindrical mandrel through mechanical force, carves sheet and contact by the internal face of expander parts, and when the nose cone of cylindrical mandrel inserts in bloated the amalgamation circular hole, eight lobes are carved sheet will radially expand outwardly motion; Carved that sheet is radially outwards exerted pressure and enlarged by the expander parts.Above-mentioned convex tendon around small column plays the equalizing pressure effect, prevents to be contacted the effect that generation stress is concentrated by the expander parts with the head that expands.So the utility model is simple in structure, design ingeniously, simultaneously the utility model only utilizes a cylindrical mandrel jacking, just can realize by the hole enlargement of expander parts, and is simple to operate, so can improve operation property.
Description of drawings
Fig. 1 is the bloated schematic perspective view of the utility model.
Fig. 2 is the bottom view of Fig. 1.
Fig. 3 is the utility model cylindrical mandrel sketch map.
Label declaration:
1 nose cone; 2 cylindrical mandrel; 3 bloated heads; 4 carve sheet; 5 amalgamation circular holes; 6 cylindrical sections; 7 convex tendons; 8 grooves; 9 springs.
The specific embodiment
Describe the utility model below in conjunction with accompanying drawing in detail with embodiment.
Like Fig. 1, Fig. 2 and shown in Figure 3, a kind of pipe end expands the moulding utensil, comprise cylindrical mandrel 2 that an end has a nose cone 1 with one bloated 3; It is characterized in that: 3 and the carve sheets 4 that have 45 ° inclined-planes the same by the octofoil figure shape that expand are put together; Be formed centrally amalgamation circular hole 5 in bloated 3; The diameter of amalgamation circular hole 5 is littler than cylindrical section 6 diameters of cylindrical mandrel 2; When the nose cone of cylindrical mandrel 1 inserts in the amalgamation circular hole 5 of the head that expands, eight lobes are carved sheet 4 will radially expand outwardly motion; Above-mentioned bloated 3 appearance amalgamation forms three ascending step cylinders; The end rounding of minimum step circle styletable, there is the convex tendon 7 around small column at the middle part; There is the groove 8 around big column at maximum step cylinder middle part, is with spring 9 in the groove.
Claims (1)
1. a pipe end expands the moulding utensil, comprises that an end has the cylindrical mandrel of nose cone (1) (2) and the head (3) that expands; It is characterized in that: the head (3) that expands and carve sheet (4) that have 45 ° inclined-planes the same by the octofoil figure shape is put together; Be formed centrally amalgamation circular hole (5) in the bloated head (3); The diameter of amalgamation circular hole (5) is littler than cylindrical section (6) diameter of cylindrical mandrel (2); When the nose cone (1) of cylindrical mandrel inserts in the amalgamation circular hole (5) of the head that expands, eight lobes are carved sheet (4) will radially expand outwardly motion; The appearance amalgamation of above-mentioned bloated head (3) forms three ascending step cylinders; The end rounding of minimum step circle styletable, there is the convex tendon (7) around small column at the middle part; There is the groove (8) around big column at maximum step cylinder middle part, is with spring (9) in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205700628U CN202398728U (en) | 2011-12-31 | 2011-12-31 | Expansion forming appliance for pipe end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205700628U CN202398728U (en) | 2011-12-31 | 2011-12-31 | Expansion forming appliance for pipe end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202398728U true CN202398728U (en) | 2012-08-29 |
Family
ID=46696404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205700628U Expired - Fee Related CN202398728U (en) | 2011-12-31 | 2011-12-31 | Expansion forming appliance for pipe end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202398728U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734666A (en) * | 2016-11-14 | 2017-05-31 | 南昌航空大学 | A kind of marmem pipe joint rigidity expander with interior muscle |
| CN109049654A (en) * | 2018-07-09 | 2018-12-21 | 山东钢铁股份有限公司 | The online pipe expander of external heated type pvc pipe and pvc pipe expansion pipe system |
| CN110681767A (en) * | 2019-10-15 | 2020-01-14 | 苏州工业园区麦特自动化技术有限公司 | Inner ring hydraulic expanding mechanism |
| CN111545614A (en) * | 2020-05-27 | 2020-08-18 | 永康市锦鸥机械有限公司 | Rib expanding machine |
-
2011
- 2011-12-31 CN CN2011205700628U patent/CN202398728U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734666A (en) * | 2016-11-14 | 2017-05-31 | 南昌航空大学 | A kind of marmem pipe joint rigidity expander with interior muscle |
| CN109049654A (en) * | 2018-07-09 | 2018-12-21 | 山东钢铁股份有限公司 | The online pipe expander of external heated type pvc pipe and pvc pipe expansion pipe system |
| CN109049654B (en) * | 2018-07-09 | 2024-05-07 | 山东钢铁股份有限公司 | External heating type PVC pipe online pipe expanding device and PVC pipe expanding system |
| CN110681767A (en) * | 2019-10-15 | 2020-01-14 | 苏州工业园区麦特自动化技术有限公司 | Inner ring hydraulic expanding mechanism |
| CN111545614A (en) * | 2020-05-27 | 2020-08-18 | 永康市锦鸥机械有限公司 | Rib expanding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20151231 |
|
| EXPY | Termination of patent right or utility model |