CN102430657B - Tube expander - Google Patents
Tube expander Download PDFInfo
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- CN102430657B CN102430657B CN 201210008716 CN201210008716A CN102430657B CN 102430657 B CN102430657 B CN 102430657B CN 201210008716 CN201210008716 CN 201210008716 CN 201210008716 A CN201210008716 A CN 201210008716A CN 102430657 B CN102430657 B CN 102430657B
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- leading screw
- bloated
- cylinder
- roller
- roll
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Abstract
The invention relates to a tube expander. The tube expander comprises a cylinder, eight groups of expanding roll structures, a leading screw, a conical plate and a leading screw sleeve, wherein each expanding roll structure comprises a swinging arm, an expanding roll framework of which a back end part is fixed to one end of the swinging arm, roll shafts which are installed on a left side wall anda right side wall of the expanding roll framework, and expanding rolls which are installed on the roll shafts through bearings; the other end of the swinging arm is hinged with the tail end of the cylinder; the expanding roll framework is arranged on the front part of the cylinder; the inner end of the leading screw is fixed inside the cylinder; the leading screw is parallel to an axial center line of the cylinder; an outer end part of the leading screw extends out of a cylinder opening at the front end of the cylinder; the conical plate is sleeved on the leading screw; the leading screw sleeve is installed on the leading screw; the conical plate is arranged between the expanding roll framework and the leading screw sleeve; the side surface of an excircle of the conical plate is a conicalsurface; a conical fan-shaped camber which is matched with the conical surface is arranged on a front end part of the bottom surface of the expanding roll framework; and the conical surface of the conical plate is arranged correspondingly to the conical fan-shaped camber of the expanding roll framework. The tube expander has the advantages of scientific design, high practicality, high production efficiency and reliable production quality.
Description
Technical field
The present invention relates to a kind of equipment of process pipeline, specifically, related to a kind of tube expander that is used for process pipeline.
Background technology
Expansion tube is a kind of critical piping of using in the expanded perlite processing technology, because the expansion tube body is long, caliber is bigger, does not have ready-made matured product on the market; Existing expansion tube rolling machine roll-forming, but because stainless intensity is big, roll very difficult, before each pipe crimping, all need manually pre-bending to be carried out in the steel plate end, the finished product circularity that rolls out like this and straightness error are all very big, and deviation from circular from is generally 6mm, and straightness error is generally 10mm; Because these two errors are bigger, cause expansion furnace that difficulty, expansion tube poor sealing performance on every side is installed; Usually, expansion tube rolled and welding fabrication after, need to adopt linearity and the circularity of expand tube device correction pipeline, still, the bloated roller of existing expand tube device is for fixedly installing, easy to wear, the life-span is short, during use, easily expansion tube is caused damage, and the bloated roller angle of expand tube device can't be regulated, and causes its suitable caliber scope to be restricted.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, thus provide a kind of design science, practical, production efficiency is high, the quality of production is reliable, the circularity of institute's process pipeline and the low-down tube expander of straightness error.
To achieve these goals, the technical solution adopted in the present invention is: a kind of tube expander, and it comprises that cylinder, N organize awl dish and the leading screw sleeve that the bloated roll structure, leading screw, the center that are distributed in described cylinder lateral surface have the leading screw trepanning; Wherein, described bloated roll structure comprises the fixing bloated roller framework of swing arm, rearward end and described swing arm one end, is installed in the roll shaft on the wall of the described bloated roller framework left and right sides and is installed in bloated roller on the described roll shaft by bearing; The described swing arm other end and described cylinder end are hinged, and described bloated roller framework is arranged on described cylinder leading section; Described leading screw the inner is fixed in the described cylinder, the axial centre line parallel of described leading screw and described cylinder, and described cylinder front end nozzle is stretched out in described leading screw outer end; Described awl dish is contained on the described leading screw by described screw set borehole jack, and described leading screw sleeve is installed on the described leading screw, and described awl dish is arranged between the bloated roller framework and described leading screw sleeve of the bloated roll structure of N group; The cylindrical side of described awl dish is taper seat, and the bottom surface leading section of described bloated roller framework has the awl fan-shaped curved surface that cooperates with described taper seat, and the awl fan-shaped curved surface of the corresponding described bloated roller framework of the taper seat of described awl dish arranges; N is not less than 3 natural number.
Based on above-mentioned, vertical fixing has gag lever post on the outer wall of described cylinder, and limited cover is fixedly arranged at described gag lever post top; Described swing arm is provided with perforation, and described perforation is made of the spacing hole on top and the bar hole of bottom, and the aperture of described spacing hole is greater than the aperture in described bar hole; Described gag lever post passes described perforation setting, is equipped with back-moving spring on the described gag lever post, and the upper port edge that is located at described limited cover and described bar hole is pushed up at described back-moving spring two ends respectively.
Based on above-mentioned, described awl dish comprises ring-type awl dish, is positioned at disk and four ribs plate that described ring-type is bored disk center, wherein, each described gusset connects described ring-type awl dish and described interior disk respectively, between described ring-type awl dish and the described interior disk annular gap is arranged; The front end barrel of described cylinder offers four axial limiting grooves, and the leading section of described cylinder is plugged in the described annular gap, and four described gussets are separately positioned in four described axial limiting grooves.
Based on above-mentioned, the lateral surface of described cylinder is evenly distributed with eight groups of described bloated roll structures.
Based on above-mentioned, what have on the bloated roller roll surface of the bloated roll structure of N group is positioned on the same circle with described cylinder longitudinal center line vertical range point farthest, and described bloated roller is that diameter is the bloated roller of the little gradual change type in both sides broad in the middle.
Based on above-mentioned, described cylinder end is provided with bail.
The relative prior art of the present invention has outstanding substantive distinguishing features and marked improvement, and specifically, the present invention has cone internal expansion type structure, and tube expander work external diameter can be adjusted as required, and when bloated roller weares and teares, can carry out adequate compensation; The roller that expands adopts rolling structure, has increased the rotation flexibility of bloated roller, can reduce the damage of roller to the expansion tube inwall of expanding; Bloated roller is selected superior alloy steel for use and through Quenching Treatment, is made the roller that expands have longer service life; Therefore, the present invention have design science, practical, production efficiency is high, the reliable advantage of the quality of production.
Description of drawings
Fig. 1 is cross-sectional view of the present invention.
Fig. 2 is the structural representation of eight groups of described bloated roller frameworks.
Fig. 3 is the planar structure schematic diagram of described awl dish.
Fig. 4 is the cross-sectional view of described awl dish.
Fig. 5 is the structural representation of described cylinder.
Fig. 6 is a side structure schematic diagram of described cylinder.
Fig. 7 is the opposite side structural representation of described cylinder.
Among the figure: 1. cylinder, 2. leading screw, 3. leading screw trepanning, 4. awl dish, 5. leading screw sleeve, 6. swing arm, roller framework, 8. roll shaft 7. expand, 9. the roller that expands, 10. gag lever post, 11. limited covers, 12. spacing holes, 13. the bar hole, 14. back-moving springs, 15. ring-type awl dishes, 16. interior disk, 17. gussets, 18. annular gaps, 19. the axial limiting groove, 20. bails, 21. swing arm seats.
The specific embodiment
Below by the specific embodiment, technical scheme of the present invention is described in further detail.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7, a kind of tube expander, it comprises that bloated roll structure, leading screw 2, center that cylinder 1, eight groups are evenly distributed on described cylinder 1 lateral surface have awl dish 4 and the leading screw sleeve 5 of leading screw trepanning 3.
Wherein, described bloated roll structure comprises the fixing bloated roller framework 7 of swing arm 6, rearward end and described swing arm 6 one ends, is installed in the roll shaft 8 on described bloated roller framework 7 left and right sides walls and is installed in bloated roller 9 on the described roll shaft 8 by bearing; Described bloated roller 9 is selected superior alloy steel for use and through Quenching Treatment.
Described cylinder 1 end fixedly has 21, eight groups of swing arm seats 21 of eight groups of swing arm seats evenly to distribute along the circumferencial direction of described cylinder 1; Described swing arm 6 other ends and described swing arm seat 21 are hinged, and described bloated roller framework 7 is arranged on described cylinder 1 leading section, being centered close on the same circle of eight groups of described bloated roller frameworks 7.
Described leading screw 2 the inners are fixed in the described cylinder 1, and described leading screw 2 is positioned on the longitudinal center line of described cylinder 1, and described cylinder 1 front end nozzle is stretched out in described leading screw 2 outer ends; Described awl dish 4 is sleeved on the described leading screw 2 by described leading screw trepanning 3, and described leading screw sleeve 5 is installed on the described leading screw 2, and described awl dish 4 is arranged between the bloated roller framework 7 and described leading screw sleeve 5 of eight groups of roll structures that expand.
The cylindrical side of described awl dish 4 is taper seats, and the bottom surface leading section of described bloated roller framework 7 has the awl fan-shaped curved surface that cooperates with described taper seat; The awl fan-shaped curved surface of the corresponding described bloated roller framework 7 of the taper seat of described awl dish 4 arranges, and forms a kind of matching relationship between the two, so as awl when coiling 4 moving linearlies, can promote eight groups expand roller frameworks 7 to around open; During concrete the use, rotating threaded shaft sleeve 5 makes it along leading screw 2 moving linearlies, and then the drive awl coils 4 moving linearlies, under the effect of awl dish 4, the roller framework 7 that expands can make the roller framework 7 that expands open with respect to described cylinder 1 by described awl fan-shaped curved surface, and vice versa.
During use, eight groups of rollers 9 that expand need form an extruding force that expands outwardly respectively to processed expansion tube inwall, and these eight extruding forces need be positioned on the same circle, what therefore, have on eight groups of roller 9 roll surfaces that expand need be positioned on the same circle with described cylinder 1 longitudinal center line vertical range point farthest; Simultaneously, relatively large for the contact area that makes each extruding force, the roller 9 that needs to expand is designed to diameter and is the bloated roller of the little gradual change type in both sides broad in the middle.
Of particular note, in other embodiments, also can be three groups or four groups or five groups or the six groups roll structures that expand.
As shown in Figure 1, vertical fixing has gag lever post 10 on the outer wall of described cylinder 1, and limited cover 11 is fixedly arranged at described gag lever post 10 tops; Described swing arm 6 is provided with perforation, and described perforation is made of the spacing hole 12 on top and the bar hole 13 of bottom, and the aperture of described spacing hole 12 is greater than the aperture in described bar hole 13; Described gag lever post 10 passes described perforation setting, is equipped with back-moving spring 14 on the described gag lever post 10, and the upper port edge that is located at described limited cover 11 and described bar hole 13 is pushed up at described back-moving spring 14 two ends respectively; Under the effect of leading screw sleeve 5, described awl dish 4 moves along described leading screw 2, and then, produce motion forward or backward between awl dish 4 and the bloated roller framework 7, at this moment, under the effect of back-moving spring 14, gag lever post 10 and limited cover 11, can form position-limiting action to described swing arm 6, simultaneously, also be beneficial to the matching relationship that satisfies between described awl dish 4 and the described bloated roller framework 7, can form reset response to described swing arm 6.
As Fig. 1, Fig. 3, Fig. 4 and shown in Figure 6, described awl dish 4 comprises ring-type awl dish 15, is positioned at disk 16 and four ribs plate 17 that described ring-type awl coils 15 centers, wherein, each described gusset 17 connects described ring-type awl dish 15 and described interior disk 16 respectively, between described ring-type awl dish 15 and the described interior disk 16 annular gap 18 is arranged; The front end barrel of described cylinder 1 offers four axial limiting grooves 19, and the leading section of described cylinder 1 is plugged in the described annular gap 18, and four described gussets 17 are separately positioned in four described axial limiting grooves 19; This structure Design makes four described gussets 17 respectively along four described axial limiting groove 19 moving linearlies, and then, can make the motion of awl dish 4 linearly, it has guide effect, simultaneously, can prevent that awl dish 4 rotates under the effect of leading screw sleeve 5, it has position-limiting action.
As Fig. 1, Fig. 5 and shown in Figure 7, described cylinder 1 end is provided with bail 20.
During use, tube expander is placed in rolled expansion tube one end, then, spur described bail 20, make tube expander mobile in expansion tube, under the effect of frictional force, described bloated roller 9 rolls along the expansion tube inwall, and the expansion tube inwall is formed the extruding force that expands outwardly, and makes the tube wall of expansion tube open also rounded, simultaneously, also can be stretching expansion tube; Of particular note, when using tube expander, for circularity and the linearity that guarantees pipeline, after the angle of adjusting the circumferencial direction of tube expander in expansion tube, can repeatedly repeat aforesaid operations.
The expansion tube that adopts this tube expander to process, its quality is significantly increased, and deviation from circular from is less than 1.5mm, straightness error is less than 3mm, through the expansion tube inwall after the extruding, because the effect of flow harden, intensity is higher, is beneficial to the service life that has prolonged expansion tube.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (6)
1. tube expander is characterized in that: it comprises that bloated roll structure, leading screw, center that cylinder, N group are distributed in described cylinder lateral surface have awl dish and the leading screw sleeve of leading screw trepanning; Wherein, described bloated roll structure comprises the fixing bloated roller framework of swing arm, rearward end and described swing arm one end, is installed in the roll shaft on the wall of the described bloated roller framework left and right sides and is installed in bloated roller on the described roll shaft by bearing; The described swing arm other end and described cylinder end are hinged, and described bloated roller framework is arranged on described cylinder leading section; Described leading screw the inner is fixed in the described cylinder, the axial centre line parallel of described leading screw and described cylinder, and described cylinder front end nozzle is stretched out in described leading screw outer end; Described awl dish is contained on the described leading screw by described screw set borehole jack, and described leading screw sleeve is installed on the described leading screw, and described awl dish is arranged between the bloated roller framework and described leading screw sleeve of the bloated roll structure of N group; The cylindrical side of described awl dish is taper seat, and the bottom surface leading section of described bloated roller framework has the awl fan-shaped curved surface that cooperates with described taper seat, and the awl fan-shaped curved surface of the corresponding described bloated roller framework of the taper seat of described awl dish arranges; N is not less than 3 natural number.
2. tube expander according to claim 1, it is characterized in that: vertical fixing has gag lever post on the outer wall of described cylinder, and limited cover is fixedly arranged at described gag lever post top; Described swing arm is provided with perforation, and described perforation is made of the spacing hole on top and the bar hole of bottom, and the aperture of described spacing hole is greater than the aperture in described bar hole; Described gag lever post passes described perforation setting, is equipped with back-moving spring on the described gag lever post, and the upper port edge that is located at described limited cover and described bar hole is pushed up at described back-moving spring two ends respectively.
3. tube expander according to claim 1 and 2, it is characterized in that: described awl dish comprises ring-type awl dish, is positioned at disk and four ribs plate that described ring-type is bored disk center, wherein, each described gusset connects described ring-type awl dish and described interior disk respectively, between described ring-type awl dish and the described interior disk annular gap is arranged; The front end barrel of described cylinder offers four axial limiting grooves, and the leading section of described cylinder is plugged in the described annular gap, and four described gussets are separately positioned in four described axial limiting grooves.
4. tube expander according to claim 3, it is characterized in that: the lateral surface of described cylinder is evenly distributed with eight groups of described bloated roll structures.
5. tube expander according to claim 3, it is characterized in that: what have on the bloated roller roll surface of the bloated roll structure of N group is positioned on the same circle with described cylinder longitudinal center line vertical range point farthest, and described bloated roller is that diameter is the bloated roller of the little gradual change type in both sides broad in the middle.
6. tube expander according to claim 3, it is characterized in that: described cylinder end is provided with bail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210008716 CN102430657B (en) | 2012-01-12 | 2012-01-12 | Tube expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210008716 CN102430657B (en) | 2012-01-12 | 2012-01-12 | Tube expander |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102430657A CN102430657A (en) | 2012-05-02 |
| CN102430657B true CN102430657B (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210008716 Expired - Fee Related CN102430657B (en) | 2012-01-12 | 2012-01-12 | Tube expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102430657B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387102B (en) * | 2017-08-22 | 2023-11-14 | 华东交通大学 | Reconstruction shield machine for shield tunnel |
| CN108453186B (en) * | 2018-04-03 | 2024-04-09 | 扬州市欧亿照明电气有限公司 | Pipe expanding device for welding street lamp pole |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2831843B1 (en) * | 2001-11-08 | 2004-02-06 | Michelin Soc Tech | PROCESS AND DEVICE FOR STRETCHING AND PARTS THUS DUDGEONNEE |
| US7681636B2 (en) * | 2005-08-05 | 2010-03-23 | Shell Oil Company | Pipe expander |
| JP4851815B2 (en) * | 2006-03-01 | 2012-01-11 | 株式会社スギノマシン | Tube expansion device |
| CA2576487C (en) * | 2007-02-20 | 2008-01-29 | Eagle Precision Technologies Limited | An i/o endforming tool for forming tubes and method of manufacture thereof |
| CN202006246U (en) * | 2011-03-08 | 2011-10-12 | 刘春熙 | Pipe expander |
| CN202411251U (en) * | 2012-01-12 | 2012-09-05 | 信阳市四通机械制造有限公司 | Tube expander |
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2012
- 2012-01-12 CN CN 201210008716 patent/CN102430657B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102430657A (en) | 2012-05-02 |
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Granted publication date: 20130925 Termination date: 20150112 |
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