CN102601204A - Multi-deformed bending forming method and device for pipe fitting - Google Patents
Multi-deformed bending forming method and device for pipe fitting Download PDFInfo
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- CN102601204A CN102601204A CN2012100688421A CN201210068842A CN102601204A CN 102601204 A CN102601204 A CN 102601204A CN 2012100688421 A CN2012100688421 A CN 2012100688421A CN 201210068842 A CN201210068842 A CN 201210068842A CN 102601204 A CN102601204 A CN 102601204A
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- pipe fitting
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- hydraulic expanding
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- expanding die
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Abstract
The invention discloses a multi-deformed bending forming method for a pipe fitting. The method comprises the following steps: 1) placing a tube blank into an inner cavity of a hydraulic bulging die, 2) filling up a cylinder at an external part of the hydraulic bulging die with liquid, and mounting a punch with a through hole and an overflow valve on the cylinder, 3) driving movement of a piston of the cylinder to extrude the liquid in the cylinder so as to obtain high-pressure liquid, and injecting the high-pressure liquid into the tube blank through the punch, so that the tube blank obtains a hydraulic pressure required for bulging, 4) starting applying an axial force to the end part of the tube blank by the punch when the piston contacts the punch arranged inside the cylinder, and 5) controlling the axial force by controlling a travel of the piston, and controlling the size of the hydraulic pressure for forming the tube blank by adjusting an overflow value of the overflow valve so as to gradually increase a forming pressure of a forming apparatus, so that a transition fillet of the tube blank gradually gets close to the hydraulic bulging die, and achieves the required shape. The invention also discloses a multi-deformed bending forming device of the pipe fitting. The procedure and the die are simplified and the cost is reduced.
Description
Technical field
The present invention relates to the pipe fitting processing technique field, how special-shaped bending forming method of particularly a kind of pipe fitting and device.
Background technology
In the prior art, pipe fitting utilizes punching press metal plate spare to be welded to form.
And in the pipe fitting process, some pipe fitting forming technology more complicated are arranged, such as having many special-shaped crooked pipe fittings, need multiple operation just can carry out.
In order to reduce the quantity of operation and mould, reduce the cost of producer and die casting producer, economize on resources, usually consider that same operation accomplishes more moulding content as far as possible.
Therefore, how to provide a kind of pipe fitting how special-shaped bending forming method,, reduce cost, become the important technological problems that those skilled in the art need to be resolved hurrily to realize simplifying operation and mould.
Summary of the invention
In view of this, first purpose of the present invention is to provide a kind of pipe fitting how special-shaped bending forming method, to realize simplifying operation and mould, reduces cost.
On the basis of the how special-shaped bending forming method of pipe fitting, the present invention also provides a kind of pipe fitting how special-shaped pane bending apparatus.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
The how special-shaped bending forming method of a kind of pipe fitting comprises step:
1) pipe is placed the inner chamber of hydraulic expanding die;
2) in the outside cylinder body of said hydraulic expanding die, fill liquid, drift and the overflow valve with through hole is installed on the said cylinder body;
3) drive the liquid that the motion of the piston of said cylinder body pushes in the said cylinder body and obtain highly pressurised liquid, and highly pressurised liquid is injected in the said pipe through said drift, make said pipe obtain the required hydraulic coupling of bulging;
When 4) said piston touched the said drift that is arranged in the said cylinder body, said drift began the end of said pipe is applied axial force;
5) through controlling the Stroke Control axial force of said piston; Control the size of said pipe forming liquid pressure through the overflow value of regulating said overflow valve; Come progressively to increase the forming pressure of said former; Make the knuckle of the said pipe said hydraulic expanding die that reclines gradually, reach desired shape.
Preferably, said hydraulic expanding die is the how special-shaped bending mould that cooperates with pipe fitting.
Preferably, the both sides of said hydraulic expanding die all relatively are provided with said cylinder body.
The how special-shaped pane bending apparatus of a kind of pipe fitting comprises:
Workbench;
Be installed in the hydraulic expanding die on the said workbench;
Said hydraulic expanding die top is provided with slide block;
Be arranged on the outside cylinder body of said hydraulic expanding die.
Preferably, said hydraulic expanding die is the how special-shaped bending mould that cooperates with said pipe fitting.
Preferably, said hydraulic expanding die comprises:
Patrix bloom that cooperates with said pipe fitting and counterdie bloom;
Be arranged on the upper bolster and the die shoe that are used for installing said patrix bloom and said counterdie bloom on the said workbench.
Preferably, said patrix bloom is fixedly connected through positioning key respectively with said die shoe with said upper bolster and said counterdie bloom.
Preferably, said cylinder body is connected in said hydraulic expanding die through plunger mechanism.
Preferably, said plunger mechanism comprises:
Be connected in the drift of said hydraulic expanding die;
Be connected in the punch holder of said cylinder body;
The flange that connects said drift and punch holder;
The drift pressing plate that is used for fixing said flange.
Preferably, the concrete quantity of said cylinder body is two, the relative both sides that are arranged on said hydraulic expanding die.
Can find out from above-mentioned technical scheme; The how special-shaped bending forming method of pipe fitting provided by the invention, realized on a cover internal high pressure forming mould not only can pipe fitting how special-shaped crooked but also can carry out the design of internal high pressure forming action, this method avoided axial feed supplement and interior repoussage just as the time carry out under the situation that to be prone to that unstability takes place wrinkling because of the excessive pipe of frictional force end; And the bulging district is because of the not enough easy defective of breaking of feed supplement; Can improve the forming limit of tubing greatly, reduce preformed and heat treatment step, reduce the wearing and tearing of mold cavity simultaneously greatly; Prolong die life, thereby reduced cost.The present invention also provides a kind of pipe fitting how special-shaped pane bending apparatus.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structure sketch map of the how special-shaped pane bending apparatus of pipe fitting that Fig. 1 provides for the embodiment of the invention.
The specific embodiment
The invention discloses the how special-shaped bending forming method of a kind of pipe fitting,, reduce cost to realize simplifying operation and mould.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The how special-shaped bending forming method of the pipe fitting that the embodiment of the invention provides comprises:
Step S1: the inner chamber that pipe is placed hydraulic expanding die;
Utilize the displacement of hydraulic expanding die constraint pipe.
Step S2: in the outside cylinder body of hydraulic expanding die, fill liquid, drift and the overflow valve with through hole is installed on the cylinder body;
Corresponding Pressure gauge assembly can also be set come better control overflow value.
Step S3: the liquid in the motion extruding cylinder body of the piston of driving cylinder body obtains highly pressurised liquid, and highly pressurised liquid is injected in the pipe through drift, makes pipe obtain the required hydraulic coupling of bulging;
Piston drives through external force, like forcing press.Highly pressurised liquid is directed to pipe inside through the central through hole of drift, and being embodied as bulging tubing provides the required hydraulic coupling that is shaped.
Step S4: when piston touched the drift that is arranged in the cylinder body, drift began the end of pipe is applied axial force.
Step S5: through the Stroke Control axial force of control piston; Control the size of pipe forming liquid pressure through the overflow value of regulating overflow valve; Come progressively to increase the forming pressure of former, make the knuckle of the pipe hydraulic expanding die that reclines gradually, reach desired shape.
The motion of piston makes the cavity volume variation of the Volume Changes of liquid in the cylinder body greater than the Plastic Forming of shaping pipe, and unnecessary liquid overflows from spout hole, thereby guarantees that inner high voltage required in the pipe forming process is stable.
The how special-shaped bending forming method of the pipe fitting that the embodiment of the invention provides; Realized on a cover internal high pressure forming mould not only can pipe fitting how special-shaped crooked but also can carry out the design of internal high pressure forming action; This method avoided axial feed supplement and interior repoussage just as the time carry out under the situation that to be prone to that unstability takes place wrinkling because of the excessive pipe of frictional force end, and the bulging district is prone to the defective of breaking because of feed supplement is not enough, can improve the forming limit of tubing greatly; Reduce preformed and heat treatment step; Reduce simultaneously the wearing and tearing of mold cavity greatly, prolong die life, thereby reduced cost.
The type of pipe fitting has a variety of, also needs multiple corresponding with it mould naturally.Therefore, as preferably, hydraulic expanding die is the how special-shaped bending mould that cooperates with pipe fitting, designs concavo-convex position according to the required crooked data of pipe fitting at internal high pressure forming mould upper and lower cavity.
In order further to optimize above-mentioned technical scheme, the both sides of hydraulic expanding die all relatively are provided with cylinder body, make to have better forming effect by the stressed more even of pipe.
See also Fig. 1, the present invention goes back embodiment provides a kind of pipe fitting how special-shaped pane bending apparatus, comprising:
Be installed in the hydraulic expanding die on the workbench 14, match with the shape of pipe fitting;
The hydraulic expanding die top is provided with slide block 13, is used for fastening hydraulic expanding die;
Be arranged on the outside cylinder body 9 of hydraulic expanding die, through horizontal cylinder support 8 support fixation;
As preferably, hydraulic expanding die is the how special-shaped bending mould that cooperates with pipe fitting, designs concavo-convex position according to the required crooked data of pipe fitting at internal high pressure forming mould upper and lower cavity.
As shown in Figure 1, hydraulic expanding die is split type mould, specifically comprises:
The patrix bloom 10 and counterdie bloom 11, the installation and removal easily that cooperate with pipe fitting;
Be arranged on the upper bolster 1 and die shoe 2 that are used for installing patrix bloom 10 and counterdie bloom 11 on the workbench 14, mould is fixed, the shape of its inner chamber is remained unchanged.
In the how special-shaped pane bending apparatus of the pipe fitting that the embodiment of the invention provides, cylinder body 9 is connected in hydraulic expanding die through plunger mechanism, adopts drift to give axial force, can also use pressure head.
This plunger mechanism specifically comprises:
Be connected in the drift 4 of hydraulic expanding die, have the central through hole that supplies the highly pressurised liquid circulation;
Be connected in the punch holder 5 of cylinder body 9, be used to connect drift 4 and cylinder body 9;
The flange 7 that connects drift 4 and punch holder 5;
The drift pressing plate 6 that is used for fixing flange 7 is through being bolted on the punch holder 5.
Certainly; The mode of plunger mechanism setting is not unique; Type of attachment between its assembly also is diversified, for example connects or key connects through profile, and will be conspicuous concerning those skilled in the art to the multiple modification of these embodiment.
In order further to optimize above-mentioned technical scheme, the concrete quantity of cylinder body 9 is two, and the relative both sides that are arranged on hydraulic expanding die make to have better forming effect by the stressed more even of pipe.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. the how special-shaped bending forming method of pipe fitting is characterized in that, comprises step:
1) pipe is placed the inner chamber of hydraulic expanding die;
2) in the outside cylinder body of said hydraulic expanding die, fill liquid, drift and the overflow valve with through hole is installed on the said cylinder body;
3) drive the liquid that the motion of the piston of said cylinder body pushes in the said cylinder body and obtain highly pressurised liquid, and highly pressurised liquid is injected in the said pipe through said drift, make said pipe obtain the required hydraulic coupling of bulging;
When 4) said piston touched the said drift that is arranged in the said cylinder body, said drift began the end of said pipe is applied axial force;
5) through controlling the Stroke Control axial force of said piston; Control the size of said pipe forming liquid pressure through the overflow value of regulating said overflow valve; Come progressively to increase the forming pressure of said former; Make the knuckle of the said pipe said hydraulic expanding die that reclines gradually, reach desired shape.
2. the how special-shaped bending forming method of pipe fitting according to claim 1 is characterized in that, said hydraulic expanding die is the how special-shaped bending mould that cooperates with pipe fitting.
3. the how special-shaped bending forming method of pipe fitting according to claim 2 is characterized in that the both sides of said hydraulic expanding die all relatively are provided with said cylinder body.
4. the how special-shaped pane bending apparatus of pipe fitting is characterized in that, comprising:
Workbench (14);
Be installed in the hydraulic expanding die on the said workbench (14);
Said hydraulic expanding die top is provided with slide block (13);
Be arranged on the outside cylinder body (9) of said hydraulic expanding die.
5. the how special-shaped pane bending apparatus of pipe fitting according to claim 4 is characterized in that, said hydraulic expanding die is the how special-shaped bending mould that cooperates with said pipe fitting.
6. the how special-shaped pane bending apparatus of pipe fitting according to claim 5 is characterized in that said hydraulic expanding die comprises:
Patrix bloom (10) that cooperates with said pipe fitting and counterdie bloom (11);
Be arranged on the upper bolster (1) and the die shoe (2) that are used for installing said patrix bloom (10) and said counterdie bloom (11) on the said workbench (14).
7. the how special-shaped pane bending apparatus of pipe fitting according to claim 6 is characterized in that, said patrix bloom (10) is fixedly connected through positioning key (12) respectively with said die shoe (2) with said upper bolster (1) and said counterdie bloom (11).
8. the how special-shaped pane bending apparatus of pipe fitting according to claim 4 is characterized in that said cylinder body (9) is connected in said hydraulic expanding die through plunger mechanism.
9. the how special-shaped pane bending apparatus of pipe fitting according to claim 8 is characterized in that said plunger mechanism comprises:
Be connected in the drift (4) of said hydraulic expanding die;
Be connected in the punch holder (5) of said cylinder body (9);
The flange (7) that connects said drift (4) and punch holder (5);
The drift pressing plate (6) that is used for fixing said flange (7).
10. the how special-shaped pane bending apparatus of pipe fitting according to claim 4 is characterized in that the concrete quantity of said cylinder body (9) is two, the relative both sides that are arranged on said hydraulic expanding die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100688421A CN102601204A (en) | 2012-03-15 | 2012-03-15 | Multi-deformed bending forming method and device for pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100688421A CN102601204A (en) | 2012-03-15 | 2012-03-15 | Multi-deformed bending forming method and device for pipe fitting |
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| CN102601204A true CN102601204A (en) | 2012-07-25 |
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| CN2012100688421A Pending CN102601204A (en) | 2012-03-15 | 2012-03-15 | Multi-deformed bending forming method and device for pipe fitting |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111507A (en) * | 2013-02-04 | 2013-05-22 | 浙江华宇蜗轮减速机有限公司 | Pipe fitting hydraulic expansion pipe machining method and hydraulic expansion pipe machine |
| CN103223434A (en) * | 2013-04-10 | 2013-07-31 | 宁波帕沃尔精密液压机械有限公司 | Device and method for pipe internal high pressure forming |
| CN103286304A (en) * | 2013-06-09 | 2013-09-11 | 莱芜钢铁集团有限公司 | Novel steel ladle cover and production technology |
| CN103920787A (en) * | 2014-03-27 | 2014-07-16 | 宝山钢铁股份有限公司 | Hydraulic forming method for pipe fitting torsion beam |
| CN103949523A (en) * | 2014-04-16 | 2014-07-30 | 宁波钜智自动化装备有限公司 | Hydro forming equipment for complex pipe fitting, and application method of equipment |
| CN105215130A (en) * | 2015-08-26 | 2016-01-06 | 上海汇众汽车制造有限公司 | The curved swollen performance testing device of tubing |
| CN105522030A (en) * | 2014-09-29 | 2016-04-27 | 宝山钢铁股份有限公司 | Hydraulic forming method for pipe |
| CN105855344A (en) * | 2015-01-21 | 2016-08-17 | 保隆(安徽)汽车配件有限公司 | Forming method for small-radius bent pipes |
| CN106583593A (en) * | 2016-12-16 | 2017-04-26 | 中航动力股份有限公司 | Forming device and forming method for torsion flat tube with leaf-shaped section and thin wall |
| CN106807823A (en) * | 2015-11-30 | 2017-06-09 | 上海交运集团股份有限公司 | Frame-type hydraulic pipe fitting bulging device and its method of work |
| CN106862363A (en) * | 2017-04-14 | 2017-06-20 | 济南大学 | Internal high pressure forming die |
| CN107755513A (en) * | 2016-08-20 | 2018-03-06 | 无锡明豪汽车轻量化技术应用有限公司 | A kind of flanged not isometrical pipe fitting fixture for forming |
| CN108127045A (en) * | 2017-12-26 | 2018-06-08 | 湖南湘投金天新材料有限公司 | The expanding die and expanding method of thermal insulation cup titanium welding pipe |
| CN108817194A (en) * | 2018-04-28 | 2018-11-16 | 河南兴迪锻压设备制造有限公司 | A kind of more swan necks prepare mold and its hydraulic preparation method |
| CN109304388A (en) * | 2017-07-28 | 2019-02-05 | 上海宝钢高新技术零部件有限公司 | Bending press and method in a kind of curved part mould of hydroforming four |
| CN111842608A (en) * | 2020-06-04 | 2020-10-30 | 浙大宁波理工学院 | Pressure expansion composite internal high-pressure forming device and process for torsion piece |
| CN111957804A (en) * | 2020-07-20 | 2020-11-20 | 燕山大学 | Device for liquid-filling bending forming of thin-walled tube and forming method thereof |
| CN113441600A (en) * | 2021-07-20 | 2021-09-28 | 佛山市永恒液压机械有限公司 | Efficient elbow forming device and method |
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| CN103111507A (en) * | 2013-02-04 | 2013-05-22 | 浙江华宇蜗轮减速机有限公司 | Pipe fitting hydraulic expansion pipe machining method and hydraulic expansion pipe machine |
| CN103223434A (en) * | 2013-04-10 | 2013-07-31 | 宁波帕沃尔精密液压机械有限公司 | Device and method for pipe internal high pressure forming |
| CN103223434B (en) * | 2013-04-10 | 2015-09-30 | 宁波帕沃尔精密液压机械有限公司 | A kind of device for pipe internal high pressure and method |
| CN103286304A (en) * | 2013-06-09 | 2013-09-11 | 莱芜钢铁集团有限公司 | Novel steel ladle cover and production technology |
| CN103920787A (en) * | 2014-03-27 | 2014-07-16 | 宝山钢铁股份有限公司 | Hydraulic forming method for pipe fitting torsion beam |
| CN103920787B (en) * | 2014-03-27 | 2016-01-27 | 宝山钢铁股份有限公司 | A kind of hydraulic forming method of pipe fitting torsion beam |
| CN103949523A (en) * | 2014-04-16 | 2014-07-30 | 宁波钜智自动化装备有限公司 | Hydro forming equipment for complex pipe fitting, and application method of equipment |
| CN103949523B (en) * | 2014-04-16 | 2016-03-16 | 宁波钜智自动化装备有限公司 | A kind of equipment for complex pipes internal high pressure forming and using method thereof |
| CN105522030A (en) * | 2014-09-29 | 2016-04-27 | 宝山钢铁股份有限公司 | Hydraulic forming method for pipe |
| CN105855344A (en) * | 2015-01-21 | 2016-08-17 | 保隆(安徽)汽车配件有限公司 | Forming method for small-radius bent pipes |
| CN105215130A (en) * | 2015-08-26 | 2016-01-06 | 上海汇众汽车制造有限公司 | The curved swollen performance testing device of tubing |
| CN105215130B (en) * | 2015-08-26 | 2017-07-28 | 上海汇众汽车制造有限公司 | The curved swollen performance testing device of tubing |
| CN106807823A (en) * | 2015-11-30 | 2017-06-09 | 上海交运集团股份有限公司 | Frame-type hydraulic pipe fitting bulging device and its method of work |
| CN107755513A (en) * | 2016-08-20 | 2018-03-06 | 无锡明豪汽车轻量化技术应用有限公司 | A kind of flanged not isometrical pipe fitting fixture for forming |
| CN106583593A (en) * | 2016-12-16 | 2017-04-26 | 中航动力股份有限公司 | Forming device and forming method for torsion flat tube with leaf-shaped section and thin wall |
| CN106583593B (en) * | 2016-12-16 | 2018-11-02 | 中航动力股份有限公司 | The building mortion and manufacturing process of a kind of blade profile section thin-walled torsion flat tube |
| CN106862363A (en) * | 2017-04-14 | 2017-06-20 | 济南大学 | Internal high pressure forming die |
| CN109304388A (en) * | 2017-07-28 | 2019-02-05 | 上海宝钢高新技术零部件有限公司 | Bending press and method in a kind of curved part mould of hydroforming four |
| CN108127045A (en) * | 2017-12-26 | 2018-06-08 | 湖南湘投金天新材料有限公司 | The expanding die and expanding method of thermal insulation cup titanium welding pipe |
| CN108817194A (en) * | 2018-04-28 | 2018-11-16 | 河南兴迪锻压设备制造有限公司 | A kind of more swan necks prepare mold and its hydraulic preparation method |
| CN111842608A (en) * | 2020-06-04 | 2020-10-30 | 浙大宁波理工学院 | Pressure expansion composite internal high-pressure forming device and process for torsion piece |
| CN111957804A (en) * | 2020-07-20 | 2020-11-20 | 燕山大学 | Device for liquid-filling bending forming of thin-walled tube and forming method thereof |
| CN113441600A (en) * | 2021-07-20 | 2021-09-28 | 佛山市永恒液压机械有限公司 | Efficient elbow forming device and method |
| CN113441600B (en) * | 2021-07-20 | 2022-03-18 | 佛山市永恒液压机械有限公司 | Efficient elbow forming device and method |
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Application publication date: 20120725 |