CN107855385A - A kind of U-tube bending mechanism - Google Patents

A kind of U-tube bending mechanism Download PDF

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Publication number
CN107855385A
CN107855385A CN201711339784.0A CN201711339784A CN107855385A CN 107855385 A CN107855385 A CN 107855385A CN 201711339784 A CN201711339784 A CN 201711339784A CN 107855385 A CN107855385 A CN 107855385A
Authority
CN
China
Prior art keywords
curved
pipe fitting
pattern
wrinkle resistant
mould
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.)
Pending
Application number
CN201711339784.0A
Other languages
Chinese (zh)
Inventor
肖世军
黄广治
肖世文
肖世祥
夏涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongshan Jingda Teke Machinery Co Ltd
Original Assignee
Zhongshan Jingda Teke Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhongshan Jingda Teke Machinery Co Ltd filed Critical Zhongshan Jingda Teke Machinery Co Ltd
Priority to CN201711339784.0A priority Critical patent/CN107855385A/en
Publication of CN107855385A publication Critical patent/CN107855385A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/08Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • B21D7/085Bending rods, profiles, or tubes by passing between rollers or through a curved die by passing through a curved die

Abstract

The invention discloses a kind of U-tube bending mechanism, including curved mould, clamping and pattern, pipe fitting is through curved mould and clamping, pattern is located at pipe fitting and clamping identical side, it is the curved die face of circular arc on the inside of curved mould, wherein, pipe fitting is additionally provided with wrinkle resistant pattern with curved mould identical side, wrinkle resistant pattern is corresponding with pattern, pipe fitting is through wrinkle resistant pattern and pattern, wrinkle resistant pattern mutually contacts with curved die face, one end that wrinkle resistant pattern contacts curved die face is cambered surface, cambered surface matches with curved die face, and curved die face is stretched into inside the side of clamping in the top of the side of cambered surface contact pipe fitting.It using the U-tube bending mechanism of above technical scheme, can not only avoid flattening pipe fitting, but also pipe fitting can be made not wrinkled in bending because of unbalance stress, thus particularly suitable for processing thin-walled or softer pipe fitting.

Description

A kind of U-tube bending mechanism
Technical field
The present invention relates to formation of tubes device, more particularly to a kind of U-tube bending mechanism.
Background technology
U-tube, typically manufactured with copper pipe, be the key fitment of heat exchanger tube.In actual use, typically with short u shaped connector U-tube radiator is formed after connection, in field of heat exchange using extremely wide.
Due to copper material price costly, in order to save cost, industry is tended to process U using the relatively thin copper pipe of tube wall The heat exchange pipe fitting such as shape pipe.But tube wall it is relatively thin copper pipe quality it is softer, be to be easy to appearance to flatten or manage in Bending Processing Situations such as wall wrinkles, influence the quality of finished product.And existing bending equipment is due to the limitation of head volume, it is difficult to machining center Away from less U-tube.
The content of the invention
It is an object of the invention to provide a kind of U-tube bending mechanism.
According to an aspect of the invention, there is provided a kind of U-tube bending mechanism, including curved mould, clamping and pattern, pipe fitting Through curved mould and clamping, pattern is the curved die face of circular arc, bending on the inside of pipe fitting and clamping identical side, curved mould When, clamping is close to curved mould, so that pipe fitting be clamped, then clamping and curved die clamp hold the overall central shaft using curved die face of pipe fitting as Axle center is overturn, and pipe fitting carries out bending in the presence of pattern along curved die face, so as to be processed into predetermined shape, wherein, pipe Part is additionally provided with wrinkle resistant pattern with curved mould identical side, and wrinkle resistant pattern is corresponding with pattern, and pipe fitting passes through wrinkle resistant pattern and pattern Between, wrinkle resistant pattern mutually contacts with curved die face, and one end that wrinkle resistant pattern contacts curved die face is cambered surface, cambered surface and curved die face phase Match somebody with somebody, and curved die face is stretched into inside the side of clamping in the top of the side of cambered surface contact pipe fitting.
In some embodiments, cambered surface top is located at the edge on the inside of curved die face.
In some embodiments, curved die face is provided with the curved die cavity for being used for housing pipe fitting, and wrinkle resistant pattern contacts the one of pipe fitting Side is provided with storage tank, and storage tank is corresponding with curved die cavity.
In some embodiments, cambered surface is additionally provided with jut, and jut protrudes from cambered surface surface, jut and curved die cavity Match, during the upset of curved mould, jut is along curved die cavity sliding.
In some embodiments, curved mould and pressing mold are installed in one group of curved boom, and curved boom is by a motor driving energy Enough to be overturn using a cambered axle as axle center, cambered axle is rotatablely connected with curved boom one end, wherein, curved mould is fixed on curved boom installation cambered axle Side, and the central shaft of curved die face and the central shaft of cambered axle are in a straight line, and clamping is slidably connected with curved boom, and with one Individual compression cylinder is fixedly connected, and clamping is in the presence of compression cylinder along curved boom close to or far away from curved mould.
In some embodiments, it is directly connected between wrinkle resistant pattern and pattern by one group of elastic device or in succession Connect, under the action of the elastic means, wrinkle resistant pattern is applied the clamping force of elasticity, elastic device with pattern by both sides to pipe fitting For one or more spring or air spring.By elastic devices such as spring or air springs, wrinkle resistant pattern can be with It is engaged with pattern, the clamping action of elasticity is played to pipe fitting, pipe fitting is not shifted or is vibrated in bending process.
In some embodiments, the top of cambered surface is located at curved mould closest to the part of pipe fitting.
In some embodiments, the arc angle of curved die face is more than 180 °, and the arc angle of cambered surface is more than 45 °.
In some embodiments, a side surface of the curved mould away from pipe fitting is additionally provided with the dead slot for accommodating wrinkle resistant pattern, In the final stage of pipe fitting Bending Processing, wrinkle resistant pattern enters in dead slot;
Or
A side surface of the wrinkle resistant pattern away from pipe fitting is additionally provided with the dead slot for accommodating curved mould, in pipe fitting Bending Processing most Stage afterwards, curved mould enter in dead slot.The design of dead slot can be in the final stage of pipe fitting Bending Processing, by wrinkle resistant pattern and curved mould Folding is integrated, and volume is greatly reduced, thus is adapted to the U-tube of the small centre-to-centre spacing of processing.
In some embodiments, before upset, wrinkle resistant pattern is close to a side surface of pipe fitting and curved mould close to the one of pipe fitting Side surface flush.
Using the U-tube bending mechanism of above technical scheme, by wrinkle resistant pattern by pipe fitting during bending and the curved mould of curved mould Stress area between face is extended to the plane domain of wrinkle resistant pattern front end by the taking tangential sections between curved mould and pipe fitting, thus Active force of the pipe fitting in bending on the inside of shape between curved mould is disperseed evenly, so as to avoid flattening pipe fitting.It is in addition, flat The stress area in face can form uniform transition in bending process with pipe shape, curved mould is begun the inner side of pipe shape The thrust to keep relative stability eventually, so that pipe fitting will not wrinkle in bending because of unbalance stress, thus it is particularly suitable for using In processing thin-walled or softer pipe fitting.
Brief description of the drawings
Fig. 1 is the structural representation of the bender of the U-tube bending mechanism with one embodiment of the present invention.
Fig. 2 is the structural representation of part shown in A in Fig. 1.
Fig. 3 is the side structure schematic diagram of part shown in A in Fig. 1.
Fig. 4 is the structural representation of the U-tube bending mechanism of one embodiment of the present invention.
Fig. 5 is the fit structure schematic diagram of wrinkle resistant pattern and curved mould in Fig. 4,
Fig. 6 is wrinkle resistant pattern and the sectional view under the mated condition of curved mould in Fig. 4.
Fig. 7 is the positive structure schematic of wrinkle resistant pattern in Fig. 4.
Fig. 8 is the structure schematic diagram of wrinkle resistant pattern in Fig. 4.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
Fig. 1 to Fig. 8 schematically shows the U-tube bending mechanism according to one embodiment of the present invention.As schemed Show, the device includes curved mould 1, clamping 2 and pattern 3.
Pipe fitting is through curved mould 1 and clamping 2.
Pattern 3 is located at pipe fitting and the identical side of clamping 2.
The curved inner side of mould 1 is the curved die face 11 of circular arc.
During bending, clamping 2 is close to curved mould 1, so that pipe fitting be clamped, then clamping 2 and curved mould 1 clamp pipe fitting it is overall with The central shaft of curved die face 11 is that axle center is overturn, and pipe fitting carries out bending in the presence of pattern 3 along curved die face 11, so as to process Into predetermined shape.
Wherein, pipe fitting is additionally provided with wrinkle resistant pattern 4 with the curved identical side of mould 1.
Wrinkle resistant pattern 4 is corresponding with pattern 3, and pipe fitting is through wrinkle resistant pattern 4 and pattern 3.
Wrinkle resistant pattern 4 contacts with the curved phase of die face 11.
One end that wrinkle resistant pattern 4 contacts curved die face 11 is cambered surface 41.
Cambered surface 41 matches with curved die face 11, and curved die face 11 is stretched into close to folder in the top of the side of the contact pipe fitting of cambered surface 41 Inside the side of mould 2.
In the present embodiment, the top of cambered surface 41 is positioned at the edge of the curved inner side of die face 11.
Arc surface perfect cooperation of the cambered surface 41 along curved die face 11.
Curved die face 11 is additionally provided with the curved die cavity 12 for housing pipe fitting.
The side that wrinkle resistant pattern 4 contacts pipe fitting is provided with storage tank 42.
Storage tank 42 corresponds with curved die cavity 12.
Cambered surface 41 is additionally provided with jut 43.
Jut 43 protrudes from the surface of cambered surface 41.
Jut 43 matches with curved die cavity 12.
When curved mould 1 is overturn, jut 43 is along the curved sliding of die cavity 12.Thus play a part of positioning and be oriented to.
As illustrated, curved mould 1 and pressing mold 2 are generally mounted in two curved booms 5.
Two curved booms 5 form one group.
Curved boom 5 can be that axle center is overturn with a cambered axle 7 by a driving of motor 6.
Cambered axle 7 is rotatablely connected with the one end of curved boom 5.
Curved mould 1 is fixed on the side that curved boom 5 installs cambered axle 7.
And the central shaft of the central shaft and cambered axle 7 of curved die face 11 is in a straight line.
Clamping 2 is slidably connected with curved boom 5, and is fixedly connected with a compression cylinder 8.
Clamping 2 in the presence of compression cylinder 8 along curved boom 5 close to or far away from curved mould 1, so as to clamp or unclamp pipe Part.
It can also be directly connected to or be indirectly connected with by one group of elastic device between wrinkle resistant pattern 4 and pattern 3.
Under the action of the elastic means, wrinkle resistant pattern 4 is applied the clamping force of elasticity with pattern 3 by both sides to pipe fitting. By elastic device, wrinkle resistant pattern 4 can also be engaged with pattern 3, and the clamping action of elasticity is played to pipe fitting, is rolling over pipe fitting It will not be shifted during curved or vibrate
It is mentioned here to be directly connected to refer to that elastic device both ends are connected with wrinkle resistant pattern 4 and pattern 3 respectively, and utilize Its elastic pulling force makes wrinkle resistant pattern 4 and pattern 3 realize elastic clamping;And it is indirectly connected with referring to elastic device one end and board Other parts connect, and one of the other end and wrinkle resistant pattern 4 or pattern 3 are connected, and what is utilized is that its elastic tension force makes Wrinkle resistant pattern 4 and pattern 3 realize elastic clamping.
In the present embodiment, elastic device is one or more spring 9.
Certainly, in other examples, elastic device other elasticity that can be used can also be tied for air spring etc. Structure.
In the present embodiment, a side surface of the curved mould 1 away from pipe fitting is additionally provided with the dead slot 13 for accommodating wrinkle resistant pattern 4.
The shape of dead slot 13 is more than the profile of wrinkle resistant pattern 4, or profile at least with wrinkle resistant pattern 4 matches, so as to It is held into completely in by wrinkle resistant pattern 4.
In the final stage of pipe fitting Bending Processing, wrinkle resistant pattern 4 enters in dead slot 13, so as to by wrinkle resistant pattern 4 and curved mould 1 Folding is integrated, and volume is greatly reduced, thus is adapted to the U-tube of the small centre-to-centre spacing of processing.
In other examples, the dead slot for accommodating curved mould 1 can also be located at side table of the wrinkle resistant pattern 4 away from pipe fitting Face, in the final stage of pipe fitting Bending Processing, curved mould 1 enters in the dead slot of wrinkle resistant pattern 4.It is this design can equally reach with Identical effect in the present embodiment.
In order to reach optimal effect, the arc angle of curved die face 11 is more than 180 °, preferably greater than 270 °.
And the arc angle of cambered surface 41 is more than 45 °.
The top of cambered surface 41 is located at curved mould 1 closest to the part of pipe fitting.
Before upset, a side surface flush of the wrinkle resistant pattern 4 close to a side surface of pipe fitting with curved mould 1 close to pipe fitting. In the present embodiment, in order to reach the effect of the above, the bottom of curved die face 11 also specially offers the arc for accommodating wrinkle resistant pattern 4 The groove on the top of face 41.
Using the U-tube bending mechanism of above technical scheme, by wrinkle resistant pattern 4 by the curved of pipe fitting during bending and curved mould 1 Stress area between die face 11 is extended to the plane domain of the wrinkle resistant front end of pattern 4 by the taking tangential sections between curved mould 1 and pipe fitting, Thus active force of the pipe fitting in bending on the inside of shape between curved mould 1 has been uniformly dispersed, so as to avoid flattening pipe fitting. In addition, the stress area of plane can form uniform transition in bending process with pipe shape, make curved mould 1 to pipe shape Inner side remain metastable thrust so that pipe fitting will not wrinkle in bending because of unbalance stress, thus special It is not suitable for processing thin-walled or softer pipe fitting.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not On the premise of departing from the invention design, various modifications and improvements can be made, these belong to the protection model of the present invention Enclose.

Claims (10)

1. a kind of U-tube bending mechanism, including curved mould, clamping and pattern, pipe fitting is through curved mould and clamping, and pattern is located at pipe Part and clamping identical side, are the curved die face of circular arc on the inside of curved mould, and during bending, clamping is close to curved mould, so as to by pipe fitting Clamp, then clamping and curved die clamp are held pipe fitting and integrally overturn using the central shaft of curved die face as axle center, work of the pipe fitting in pattern Bending is carried out with the curved die face of lower edge, so as to be processed into predetermined shape, wherein, pipe fitting is additionally provided with wrinkle resistant with curved mould identical side Pattern, wrinkle resistant pattern is corresponding with pattern, and through wrinkle resistant pattern and pattern, wrinkle resistant pattern mutually contacts pipe fitting with curved die face, One end that wrinkle resistant pattern contacts curved die face is cambered surface, and cambered surface matches with curved die face, and the top of the side of cambered surface contact pipe fitting Curved die face is stretched into inside the side of clamping.
2. U-tube bending mechanism according to claim 1, it is characterised in that cambered surface top is located at the side on the inside of curved die face Edge.
3. U-tube bending mechanism according to claim 1, it is characterised in that curved die face, which is provided with, to be used to house the curved of pipe fitting Die cavity, the side of wrinkle resistant pattern contact pipe fitting are provided with storage tank, and storage tank is corresponding with curved die cavity.
4. the U-tube bending mechanism according to any one of claims 1 to 3, it is characterised in that cambered surface is additionally provided with jut, Jut protrudes from cambered surface surface, and jut matches with curved die cavity, and during the upset of curved mould, jut is along curved die cavity sliding.
5. U-tube bending mechanism according to claim 1, it is characterised in that curved mould and pressing mold are installed in one group of curved boom, Curved boom can be overturn by a motor driving using a cambered axle as axle center, and cambered axle is rotatablely connected with curved boom one end, its In, curved mould is fixed on the side of curved boom installation cambered axle, and the central shaft of curved die face and the central shaft of cambered axle are in a straight line, Clamping is slidably connected with curved boom, and is fixedly connected with a compression cylinder, and clamping approaches in the presence of compression cylinder along curved boom Or away from curved mould.
6. U-tube bending mechanism according to claim 1 or 5, it is characterised in that pass through one between wrinkle resistant pattern and pattern Group elastic device is directly connected to or is indirectly connected with, and under the action of the elastic means, wrinkle resistant pattern is with pattern by both sides to pipe fitting Apply the clamping force of elasticity, elastic device is one or more spring or air spring.
7. U-tube bending mechanism according to claim 1, it is characterised in that the top of cambered surface is located at curved mould closest to pipe The part of part.
8. U-tube bending mechanism according to claim 7, it is characterised in that the arc angle of curved die face is more than 180 °, arc The arc angle in face is more than 45 °.
9. U-tube bending mechanism according to claim 1 a, it is characterised in that side surface of the curved mould away from pipe fitting is also set There is the dead slot for accommodating wrinkle resistant pattern, in the final stage of pipe fitting Bending Processing, wrinkle resistant pattern enters in dead slot;
Or
A side surface of the wrinkle resistant pattern away from pipe fitting is additionally provided with the dead slot for accommodating curved mould, in the last rank of pipe fitting Bending Processing Section, curved mould enter in dead slot.
10. U-tube bending mechanism according to claim 1, it is characterised in that before upset, wrinkle resistant pattern is close to pipe fitting A side surface flush of one side surface with curved mould close to pipe fitting.
CN201711339784.0A 2017-12-14 2017-12-14 A kind of U-tube bending mechanism Pending CN107855385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711339784.0A CN107855385A (en) 2017-12-14 2017-12-14 A kind of U-tube bending mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711339784.0A CN107855385A (en) 2017-12-14 2017-12-14 A kind of U-tube bending mechanism

Publications (1)

Publication Number Publication Date
CN107855385A true CN107855385A (en) 2018-03-30

Family

ID=61706173

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711339784.0A Pending CN107855385A (en) 2017-12-14 2017-12-14 A kind of U-tube bending mechanism

Country Status (1)

Country Link
CN (1) CN107855385A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108620459A (en) * 2018-07-19 2018-10-09 珠海格力智能装备有限公司 Pipe bending mechanism and angle pipe equipment with it
CN108927429A (en) * 2018-07-19 2018-12-04 珠海格力智能装备有限公司 Bending mechanism and angle pipe equipment with it
CN110666011A (en) * 2019-10-25 2020-01-10 珠海格力智能装备有限公司 Bending device and U-shaped pipe processing equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108620459A (en) * 2018-07-19 2018-10-09 珠海格力智能装备有限公司 Pipe bending mechanism and angle pipe equipment with it
CN108927429A (en) * 2018-07-19 2018-12-04 珠海格力智能装备有限公司 Bending mechanism and angle pipe equipment with it
CN110666011A (en) * 2019-10-25 2020-01-10 珠海格力智能装备有限公司 Bending device and U-shaped pipe processing equipment

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