CN104741863A - Expanding and tensioning device - Google Patents
Expanding and tensioning device Download PDFInfo
- Publication number
- CN104741863A CN104741863A CN201310747239.0A CN201310747239A CN104741863A CN 104741863 A CN104741863 A CN 104741863A CN 201310747239 A CN201310747239 A CN 201310747239A CN 104741863 A CN104741863 A CN 104741863A
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- China
- Prior art keywords
- ringfeder
- pulley
- rotating shaft
- take
- expanding
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Clamps And Clips (AREA)
Abstract
An expanding and tensioning device comprises a support piece (1) and a controlling device, wherein the support piece (1) comprises a plurality of expanding sleeves (11), rubber rings (12) and an expanding sleeve base (13), the expanding sleeves (11) are connected one after another, the rubber rings (12) are arranged among adjacent expanding sleeves (11), and the expanding sleeve base (13) is fixed on the last expanding sleeve (11); the controlling device comprises a tensioning mechanism which comprises a tensioning rod (21) and tensioning power devices (22) acting on the rear end of the tensioning rod (21), the front portion of the tensioning rod (21) is inserted into inner cavities of the expanding sleeves (11), a top cap (23) is fixed at the front end of the tensioning rod (21) to butt against the front expanding sleeve (11), the tensioning power devices (22) apply extruding force on the expanding sleeves (11) via the tensioning rod (21) so as to enable the rubber rings (12) among the adjacent expanding sleeves (11) to be extruded at the same time to deform, and the outer diameters of the rubber rings (12) are increased due to deformation of the rubber rings (12), so that an inner wall of a pipe workpiece can be supported. The expanding and tensioning device has the advantages that the inner wall of the pipe workpiece cannot be damaged, workpiece deformation is small, rotation is achieved during expanding and tensioning, a resistance welding function is achieved, and welding efficiency is improved greatly.
Description
Technical field
The present invention relates to a kind of positioner of industrial use, particularly relate to a kind of for the swelling device by tubing Workpiece fixing, be applicable to the location to tubing workpiece in welder.
Background technology
In prior art, swelling device for locating tubing workpiece normally adopts metalwork to support the inwall in tubing workpiece thus reaches the object of location, but the direct contact action of this metalwork easily damages the inwall of tubing workpiece in the mode of tubing workpiece inner wall, even likely causes the distortion of tubing workpiece.In addition, existing swelling device only has single tensioner positioning function, can not rotate, when being applied to welder, if needed when multiple joint is welded in the position of the different angles of tubing workpiece, also need to make swelling device reset, readjust the angle of tubing workpiece, and then carry out tensioner location, use cumbersome, efficiency is low, time-consuming.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of swelling device that the metalwork of swelling device contacts with tubing workpiece inner wall when tensioner can be avoided to locate.
Another technical problem that the present invention will solve is to provide a kind of swelling device simultaneously with tensioner and spinfunction.
The technical scheme that the present invention solves the problems of the technologies described above employing is, manufactures and designs a kind of swelling device, comprising: for supporting support member and the control device of tubing workpiece inner wall.
Described support member comprises the ringfeder that multiple front and back are slidably connected successively, the ringfeder seat being folded in the cushion rubber between two adjacent ringfeders and being fixedly connected with rearmost end ringfeder; Described control device comprises tensioning mechanism, the tension power set that this tensioning mechanism comprises pull bar and is connected with described back end of tie rod; Described pull bar inserts the axis hole of described multiple ringfeder, and the top cover of the outside movement of a restriction forefront ringfeder is fixed in its front end.
Described tension power set apply axial compression power by described pull bar to ringfeder and the cushion rubber between adjacent two ringfeders are extruded, and the described cushion rubber generation deformation be extruded makes external diameter become support that is large thus that realize described tubing workpiece inner wall.
Described control device also comprises rotating mechanism, and this rotating mechanism comprises rotating shaft and acts on the rotary power unit at this rotating shaft rear portion, and described rotating shaft front portion is connected with described support member.
Described tensioning mechanism also comprises: be socketed on the outer and lateral surface of described rotating shaft be provided with annular groove take-up pulley, the pushing clamping sleeve outside this take-up pulley can be socketed on the relative rotation and be fixed on described pushing clamping sleeve and inner side is positioned at the driving member of described annular groove; The power of described tension power set produces axle and is connected with described pushing clamping sleeve; Described power produces axle and pulls described pushing clamping sleeve, and this pushing clamping sleeve pulls described take-up pulley by described driving member.
Described pull bar rear portion offers the first through hole, described take-up pulley offers the second through hole, and described rotating shaft offers axially extended elongated hole; Described rotating shaft inner chamber is inserted at described pull bar rear portion, and described pull bar, take-up pulley and rotating shaft link together through described first through hole, the second through hole and elongated hole by a latch.
Described rotating shaft both sides are provided with axially extended convex key, described take-up pulley inwall corresponding position is provided with two axial notches, makes can only move axially relatively between described take-up pulley and rotating shaft but can not relatively rotate in two axial notches that the described convex key of rotating shaft both sides embeds take-up pulley respectively.
Described driving member comprises dead axle and bearing, and described dead axle is fixed on described pushing clamping sleeve, described bearing be positioned at annular groove outside described take-up pulley and with this dead axle grafting.
Described pushing clamping sleeve is provided with polygonal lateral wall, is fitted with two Anti-rotary blocks be fixed outside wherein two faces of this polygonal outer sidewall.
The anterior external diameter of described ringfeder is less, rear portion external diameter is larger, joint, front and rear part forms one and vertically becomes rank place, the front portion of rear ringfeder is plugged in the inner chamber of front ringfeder, and described cushion rubber is socketed on the front portion of rear ringfeder and is folded between front ringfeder rear end face and the vertical change rank place of rear ringfeder.
The top cover of described pull bar front end is socketed on the ringfeder front portion of forefront, is gripped with described cushion rubber between this top cover and the vertical change rank place of this ringfeder.
Compared with the existing technology comparatively, swelling device of the present invention utilizes the cushion rubber of tensioning mechanism extruded sleeve on support member to make it distortion external diameter to become large thus be pressed on the inwall of tubing workpiece, reach the object of positioning workpieces, the contact internal walls of metalwork and workpiece can be avoided, can not disfiguring workpiece inwall, and the distortion of tubing workpiece can be reduced to greatest extent; In addition, swelling device of the present invention has tensioner and spinfunction concurrently, and after tensioner positioning workpieces, energy rotary support member, conveniently welds another joint at the Difference angles of tubing workpiece, substantially increase the efficiency of welding.
Accompanying drawing explanation
Fig. 1 is the structural representation of swelling device of the present invention;
Fig. 2 is the exploded view of swelling device of the present invention;
Fig. 3 is the structural representation of described take-up pulley 24 and pushing clamping sleeve 25;
Fig. 4 is described ringfeder 11 structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing shownschematically most preferred embodiment be described in further detail.
As depicted in figs. 1 and 2, swelling device of the present invention mainly comprises confession tubing workpiece and is socketed in outer support member 1 and control device, and described control device comprises tensioning mechanism and rotating mechanism.Below be illustrated respectively.
Described support member 1, roughly in column, comprises ringfeder 11 that multiple front and back connect, is folded in the cushion rubber 12 between adjacent ringfeder 11 and is fixed on the ringfeder seat 13 of rearmost ringfeder 11.As shown in Figure 4, the anterior external diameter of described ringfeder 11 is less, and rear portion external diameter is comparatively large, and joint, front and rear part forms one and vertically becomes rank place 113.During assembling, the front portion of rear ringfeder 11 is plugged in the inner chamber of front ringfeder 11, and described cushion rubber 12 is socketed on the less front portion of rear ringfeder 11 external diameter and is folded between the rear end face of front ringfeder 11 and the vertical change rank place 113 of rear ringfeder 11.
As depicted in figs. 1 and 2, rotating mechanism comprises rotating shaft 31 and acts on the rotary power unit 32 at this rotating shaft 31 rear portion, rotary power unit 32 can rotate by driven rotary axle 31, the front and rear of this rotating shaft 31 is respectively by bearing 51 and bearing 52 support, the middle part sidewall of rotating shaft 31 is fixed with relatively two convex keys 312 extended vertically, in addition, an elongated hole extended vertically 311 is also offered.
Described tensioning mechanism comprises pull bar 21, tension power set 22, the top cover 23 being fixed in pull bar 21 front end, take-up pulley 24, pushing clamping sleeve 25, driving member 26, pushes away seat 27 and latch 28.
Wherein, described pull bar 21 front portion is inserted in the inner chamber of described multiple ringfeder 11, the ringfeder 11 that the affixed top cover 23 in its front end is socketed on forefront is anterior, cushion rubber 12 is gripped with between this top cover 23 rear end face and the vertical change rank place 113 of forefront ringfeder 11, pull bar 21 rear portion is then inserted in the forward lumen of described rotating shaft 31, and this pull bar 21 rearward end offers the first through hole 211 perpendicular to its axis.
As shown in Figure 3, described take-up pulley 24 is socketed on outside the rotating shaft 31 between two bearings 51 and 52, this take-up pulley 24 lateral surface is provided with a ring annular groove 241, and the second through hole 242 its sidewall offered perpendicular to its axis, in addition, two axial notches 243 that these take-up pulley 24 inwall both sides are respectively equipped with direction of paralleling to the axis supply the described convex key 312 of rotating shaft 31 both sides to embed respectively, make thus can only move axially relatively between described take-up pulley 24 and rotating shaft 31 but can not relatively rotate.
Described pushing clamping sleeve 25 is socketed on outside take-up pulley 24, and its lateral wall is a polygon wall, wherein two relative walls offers the third through-hole 251 perpendicular to its axis, all the other walls offers fourth hole 252 and multiple screw 253.In addition, be fitted with two Anti-rotary blocks 4 be fixed outside wherein two faces of the polygonal outer sidewall of described pushing clamping sleeve 25, can prevent pushing clamping sleeve 25 from rotating around its axis thus.
Described driving member 26 is provided with multiple and is arranged on multiple walls of pushing clamping sleeve 25 respectively, this driving member 26 comprises dead axle 261 and bearing 262, wherein dead axle 261 the inner is provided with convex axle, this convex axle from the fourth hole 252 pushing clamping sleeve 25 wall, insert pushing clamping sleeve 25 inner chamber and with bearing 262 grafting, and described bearing 262 is positioned at the annular groove 241 outside described take-up pulley 24, dead axle 261 outer end is fixed on pushing clamping sleeve 25 by the screw 253 on pushing clamping sleeve 25 wall by screw.Being arranged so that between pushing clamping sleeve 25 with take-up pulley 24 of this driving member 26 can rotate around axis is relative, but can not relative movement in the axial direction.
Described pull bar 21, take-up pulley 24 and rotating shaft 31 link together through the first through hole 211, the second through hole 242 on take-up pulley 24 and the elongated hole 311 on rotating shaft 31 on pull bar 21 by described latch 28, and are stuck in jump ring 281 in the jump-ring slot at these latch 28 two ends.
As shown in Figure 2, described tension power set 22 are provided with two and lay respectively at the both sides of rotating shaft 31, and its power produces axle 221 and is connected with oscillating bearing 222.Described seat 27 outer end that pushes away is convexly equipped with convex axle 271 and is plugged in described oscillating bearing 222, and push away seat 27 the inner and be then provided with projection 272, this projection 272 is plugged in the third through-hole 251 on described pushing clamping sleeve 25.The power of described tension power set 22 produces axle 221 by oscillating bearing 222 with push away seat 27 and pull described pushing clamping sleeve 25 to move forward or backward, and this pushing clamping sleeve 25 pulls by the multiple driving members 26 be fixed thereon that described take-up pulley 24 is corresponding to be moved forward or backward.In the present embodiment, described tension power set 22 can adopt air cylinder structure.
The power of described tension power set 22 produce axle 221 by oscillating bearing 222 and push away seat 27 pull described pushing clamping sleeve 25 to move backward time, the multiple driving members 26 be fixed on pushing clamping sleeve 25 pull that described take-up pulley 24 is corresponding to be moved backward, because pull bar 21 is linked together by latch 28 and take-up pulley 24, this will pull pull bar 21 to move backward, described pull bar 21 applies extruding force by top cover 23 to multiple ringfeder 11 and the distance between adjacent ringfeder 11 is diminished thus extrudes described cushion rubber 12, described cushion rubber 12 occur deformation make external diameter become large thus with tubing workpiece inner wall close contact, the positioning function to tubing workpiece can be realized thus.And when needs rotate tubing workpiece, rotary power unit 32 drives pull bar 21, support member 1 and take-up pulley 24 to rotate by rotating shaft 31, thus can drive tubing workpiece synchronous axial system simultaneously.Now, can not rotate because pushing clamping sleeve 25 is limited by Anti-rotary block 4, and can relatively rotate between pushing clamping sleeve 25 with take-up pulley 24, therefore the rotary motion of take-up pulley 24 can not affect pushing clamping sleeve 25.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a swelling device, comprising: for supporting support member (1) and the control device of tubing workpiece inner wall; It is characterized in that:
Described support member (1) comprises the ringfeder (11) that multiple front and back are slidably connected successively, the ringfeder seat (13) being folded in the cushion rubber (12) between two adjacent ringfeders (11) and being fixedly connected with rearmost end ringfeder (11); Described control device comprises tensioning mechanism, the tension power set (22) that this tensioning mechanism comprises pull bar (21) and is connected with described pull bar (21) rear end; Described pull bar (21) inserts the axis hole of described multiple ringfeder (11), and the top cover (23) of the outside movement in restriction forefront ringfeder (11) is fixed in its front end;
Described tension power set (22) apply axial compression power by described pull bar (21) to ringfeder (11) and the cushion rubber (12) between adjacent two ringfeders (11) are extruded, and deformation occurs the described cushion rubber (12) be extruded makes external diameter become support that is large thus that realize described tubing workpiece inner wall.
2. swelling device according to claim 1, it is characterized in that: described control device also comprises rotating mechanism, this rotating mechanism comprises rotating shaft (31) and acts on the rotary power unit (32) at this rotating shaft (31) rear portion, and described rotating shaft (31) front portion is connected with described support member (1).
3. swelling device according to claim 2, it is characterized in that, described tensioning mechanism also comprises: be socketed on described rotating shaft (31) outward and lateral surface be provided with annular groove (241) take-up pulley (24), this take-up pulley (24) pushing clamping sleeve outward (25) can be socketed on the relative rotation and be fixed on described pushing clamping sleeve (25) and inner side is positioned at the driving member (26) of described annular groove (241); The power of described tension power set (22) produces axle (221) and is connected with described pushing clamping sleeve (25); Described power produces axle (221) and pulls described pushing clamping sleeve (25), and this pushing clamping sleeve (25) pulls described take-up pulley (24) by described driving member (26).
4. swelling device according to claim 3, it is characterized in that: described pull bar (21) rear portion offers the first through hole (211), described take-up pulley (24) offers the second through hole (242), described rotating shaft (31) offers axially extended elongated hole (311); Described rotating shaft (31) inner chamber is inserted at described pull bar (21) rear portion, and described pull bar (21), take-up pulley (24) and rotating shaft (31) link together through described first through hole (211), the second through hole (242) and elongated hole (311) by a latch (28).
5. swelling device according to claim 3, it is characterized in that: described rotating shaft (31) both sides are provided with axially extended convex key (312), described take-up pulley (24) inwall corresponding position is provided with two axial notches (243), makes can only move axially relatively between described take-up pulley (24) and rotating shaft (31) but can not relatively rotate in two axial notches (243) that the described convex key (312) of rotating shaft (31) both sides embeds take-up pulley (24) respectively.
6. swelling device according to claim 3, it is characterized in that: described driving member (26) comprises dead axle (261) and bearing (262), described dead axle (261) is fixed on described pushing clamping sleeve (25), described bearing (262) be positioned at described take-up pulley (24) outside annular groove (241) and with this dead axle (261) grafting.
7. swelling device according to claim 3, is characterized in that: described pushing clamping sleeve (25) is provided with polygonal lateral wall, is fitted with two Anti-rotary blocks (4) be fixed outside wherein two faces of this polygonal outer sidewall.
8. the swelling device according to any one of claim 1 to 7, it is characterized in that: the anterior external diameter of described ringfeder (11) is less, rear portion external diameter is larger, joint, front and rear part forms one and vertically becomes rank place (113), the front portion of rear ringfeder (11) is plugged in the inner chamber of front ringfeder (11), and described cushion rubber (12) is socketed on the front portion of rear ringfeder (11) and is folded between front ringfeder (11) rear end face and vertical change rank place (113) of rear ringfeder (11).
9. swelling device according to claim 7, it is characterized in that: the top cover (23) of described pull bar (21) front end is socketed on ringfeder (11) front portion of forefront, is gripped with described cushion rubber (12) between this top cover (23) and vertical change rank place (113) of this ringfeder (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747239.0A CN104741863B (en) | 2013-12-31 | 2013-12-31 | Swelling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747239.0A CN104741863B (en) | 2013-12-31 | 2013-12-31 | Swelling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104741863A true CN104741863A (en) | 2015-07-01 |
| CN104741863B CN104741863B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310747239.0A Active CN104741863B (en) | 2013-12-31 | 2013-12-31 | Swelling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104741863B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052769A (en) * | 2016-12-27 | 2017-08-18 | 宣城市建林机械有限公司 | The locking device of rotary components |
| CN109555856A (en) * | 2019-01-15 | 2019-04-02 | 苏州天准科技股份有限公司 | A kind of aperture sealing device |
| CN111003652A (en) * | 2019-12-14 | 2020-04-14 | 瞿海鹏 | Civil engineering pipe fitting device of taking |
| CN113510432A (en) * | 2021-04-16 | 2021-10-19 | 睿信泰智能科技(昆山)有限公司 | Combined assembly core expansion tool |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060132102A (en) * | 2005-06-17 | 2006-12-21 | 현대중공업 주식회사 | The device to increase of motion accuracy toward welding direction for pipe orbital welding carriage |
| US20080272178A1 (en) * | 2007-05-04 | 2008-11-06 | Ka Shing Kenny Kwan | Vacuum wire tensioner for wire bonder |
| CN102039530A (en) * | 2010-06-08 | 2011-05-04 | 昆山新莱洁净应用材料股份有限公司 | Automatic internally supporting and fixing device |
| CN102059561A (en) * | 2010-11-19 | 2011-05-18 | 河南省中原内配股份有限公司 | Clamp for quickly changing inner support of cylinder jacket |
| CN202278206U (en) * | 2011-09-30 | 2012-06-20 | 中国石化集团第四建设公司 | Large-caliber thick walled tube type grooved lathe processing clamping fixture |
| CN102513838A (en) * | 2011-12-08 | 2012-06-27 | 河南省中原内配股份有限公司 | High-precision labyrinth special fixture for cylinder casing processing |
| CN103418979A (en) * | 2013-08-09 | 2013-12-04 | 青岛东方铁塔股份有限公司 | Steel tube pneumatic clamping locating indexing device |
| CN203726072U (en) * | 2013-12-31 | 2014-07-23 | 深圳市鹏煜威科技有限公司 | Tensioning device |
-
2013
- 2013-12-31 CN CN201310747239.0A patent/CN104741863B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060132102A (en) * | 2005-06-17 | 2006-12-21 | 현대중공업 주식회사 | The device to increase of motion accuracy toward welding direction for pipe orbital welding carriage |
| US20080272178A1 (en) * | 2007-05-04 | 2008-11-06 | Ka Shing Kenny Kwan | Vacuum wire tensioner for wire bonder |
| CN102039530A (en) * | 2010-06-08 | 2011-05-04 | 昆山新莱洁净应用材料股份有限公司 | Automatic internally supporting and fixing device |
| CN102059561A (en) * | 2010-11-19 | 2011-05-18 | 河南省中原内配股份有限公司 | Clamp for quickly changing inner support of cylinder jacket |
| CN202278206U (en) * | 2011-09-30 | 2012-06-20 | 中国石化集团第四建设公司 | Large-caliber thick walled tube type grooved lathe processing clamping fixture |
| CN102513838A (en) * | 2011-12-08 | 2012-06-27 | 河南省中原内配股份有限公司 | High-precision labyrinth special fixture for cylinder casing processing |
| CN103418979A (en) * | 2013-08-09 | 2013-12-04 | 青岛东方铁塔股份有限公司 | Steel tube pneumatic clamping locating indexing device |
| CN203726072U (en) * | 2013-12-31 | 2014-07-23 | 深圳市鹏煜威科技有限公司 | Tensioning device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052769A (en) * | 2016-12-27 | 2017-08-18 | 宣城市建林机械有限公司 | The locking device of rotary components |
| CN107052769B (en) * | 2016-12-27 | 2023-08-22 | 宣城市建林机械有限公司 | Locking device of rotating assembly |
| CN109555856A (en) * | 2019-01-15 | 2019-04-02 | 苏州天准科技股份有限公司 | A kind of aperture sealing device |
| CN109555856B (en) * | 2019-01-15 | 2023-08-18 | 苏州天准科技股份有限公司 | Small hole sealing device |
| CN111003652A (en) * | 2019-12-14 | 2020-04-14 | 瞿海鹏 | Civil engineering pipe fitting device of taking |
| CN113510432A (en) * | 2021-04-16 | 2021-10-19 | 睿信泰智能科技(昆山)有限公司 | Combined assembly core expansion tool |
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| Publication number | Publication date |
|---|---|
| CN104741863B (en) | 2016-08-17 |
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