CN103736768B - Internal diameter constant two ends wall thickness increases pressurizing unit and the pressing method of tubing - Google Patents
Internal diameter constant two ends wall thickness increases pressurizing unit and the pressing method of tubing Download PDFInfo
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- CN103736768B CN103736768B CN201310753595.3A CN201310753595A CN103736768B CN 103736768 B CN103736768 B CN 103736768B CN 201310753595 A CN201310753595 A CN 201310753595A CN 103736768 B CN103736768 B CN 103736768B
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Abstract
The invention discloses the pressurizing unit that a kind of internal diameter constant two ends wall thickness increases tubing, comprise perforation tringle, leading portion external diameter shaper, stage casing external diameter shaper and back segment external diameter shaper; Described leading portion external diameter shaper comprises leading portion annular external mold, leading portion seal mould, the first radial drive cylinder and the first axial driving cylinder; Described stage casing external diameter shaper is provided with the first heater of heating blank; Described back segment external diameter shaper comprises back segment annular external mold, back segment seal mould, the second radial drive cylinder and the second axial driving cylinder; Also disclose the pressing method that a kind of internal diameter constant two ends wall thickness increases the pressurizing unit of tubing; In extrusion process, by the extrusion molding selecting different extrusion dies to realize aluminium-alloy pipe front end pipeline section, middle pipeline section and rear end pipeline section, the disposable aluminium-alloy pipe squeezing out two ends external diameter and increase, the technological process of production is short, and production cost is low; Total Product uniform quality is stablized simultaneously, and aluminium-alloy pipe each section of inside and outside circle concentricity is good, and product quality is high.
Description
Technical field
The present invention relates to a kind of extrusion die and pressing method, the pressurizing unit of the long tube of particularly a kind of two ends external diameter increase and pressing method.
Background technology
According to the regulation of GB/T20659-2006, aluminium drill pipe is that the aluminium alloy of 325-480MPa forms through extruding by minimum yield strength.
There is in prior art the extrusion die of the inconsistent aluminium-alloy pipe of extruding internal diameter, this mould is primarily of determining the external mold of aluminium-alloy pipe external diameter and determining the core bar composition of aluminium-alloy pipe inner diameter shape, core bar makes ladder shaft-like according to aluminium-alloy pipe inner diameter shape, in extrusion process, regulate the radial distance between external mold and core bar by motion core bar, thus realize the object of the inconsistent aluminium-alloy pipe of extruding internal diameter.
But this extrusion die be only adapted to produce the identical and internal diameter of external diameter different aluminium-alloy pipe, if for the production of the aluminium-alloy pipe that external diameter is different, then there is the problems such as production difficulty is comparatively large, Controlling Technology is complicated, and there is the defect such as wall unevenness, axiality difference in the product obtained.
Summary of the invention
In view of this, the object of this invention is to provide pressurizing unit and pressing method that a kind of internal diameter constant two ends wall thickness increases tubing, to solve the problem existing for existing extrusion molding apparatus production external diameter change tubing.
Internal diameter of the present invention constant two ends wall thickness increases the pressurizing unit of tubing, comprises the perforation tringle of extrusion molding pipe orifice, the leading portion external diameter shaper of extrusion molding front end pipeline section, the middle stage casing external diameter shaper of pipeline section of extrusion molding and the back segment external diameter shaper of extrusion molding rear end pipeline section;
Described leading portion external diameter shaper comprise leading portion annular external mold, for the outlet of shutoff leading portion annular external mold leading portion seal mould, drive the first radial drive cylinder that leading portion seal mould does radial motion and the first axial driving cylinder driving leading portion seal mould to axially move, described leading portion annular external mold is provided with the die cavity matched with tubing leading portion profile;
Described stage casing external diameter shaper is provided with the forming hole that middle pipeline section external diameter matches with tubing, and stage casing external diameter shaper is also provided with the first heater of heating blank;
Described back segment external diameter shaper comprises back segment annular external mold, the secondary heating mechanism be arranged on back segment annular external mold, the back segment seal mould be made up of at least two mould lobes, drive the second radial drive cylinder that each mould lobe does radial motion and the second axial driving cylinder driving each mould lobe to axially move for the external mold outlet of shutoff back segment annular, described back segment annular external mold is provided with the die cavity matched with tubing back segment profile, and back segment seal mould is provided with the clamping pass that middle pipeline section external diameter matches with tubing.
Further, described leading portion annular external mold and back segment annular external mold form by least two pieces of mould lobes, and it makees the 3rd radial drive cylinder of radial motion and drives its 3rd axial driving cylinder axially moved each mould lobe to be provided with driving.
Further, the pressurizing unit that described internal diameter constant two ends wall thickness increases tubing also comprises extruder, pressure sensor and controller, described pressure sensor is arranged on leading portion external diameter shaper and back segment external diameter shaper, pressure sensor is for detecting the pressure of blank to die cavity inwall, and by detection signal input control device, described controller is for receiving the detection signal with processing pressure sensor, and to extruder, first heater, secondary heating mechanism, first radial drive cylinder, first axial driving cylinder, second radial drive cylinder, second axial driving cylinder, 3rd radial drive cylinder and the 3rd axial driving cylinder export control signal.
Internal diameter of the present invention constant two ends wall thickness increases the pressing method of the pressurizing unit of tubing, comprises the following steps:
1), controller control the first radial drive cylinder and the first axial driving cylinder successively action leading portion seal mould is fixed on leading portion annular external mold oral area;
2), blank is clamp-oned stage casing external diameter shaper and leading portion external diameter shaper by the pressure ram action of controller control extruder successively;
3) when the pressure signal that the pressure sensor, on present segment external diameter shaper detects reaches preset signals value, tubing leading portion has extruded, controller first controls extruder and suspends extruding, then control the first axial driving cylinder and the first radial drive cylinder successively action make leading portion seal mould depart from leading portion annular external mold oral area;
4), controller control extruder pressure ram continue action, blank is extruded from stage casing external diameter shaper the middle pipeline section forming tubing;
5), when the intervalve segment length of tubing reaches preset value, controller carries out following action successively:
A, control extruder suspend extruding,
Leading portion annular external mold is removed and back segment annular external mold is moved to extrusion position by b, control the 3rd radial drive cylinder and the 3rd axial driving cylinder successively action,
C, control the second radial drive cylinder and the second axial driving cylinder successively action back segment seal mould is moved to extrusion position, and by control second radial drive cylinder, back segment seal mould is fixedly clamped the pipeline section squeezed out,
D, control first heater by blank heating to predetermined value,
Blank is clamp-oned stage casing external diameter shaper and back segment external diameter shaper by the pressure ram of e, control extruder successively;
6) when the pressure signal, detected when the pressure sensor on back segment external diameter shaper reaches preset signals value; tubing back segment has extruded; controller control the second axial driving cylinder and the second radial drive cylinder successively action back segment seal mould is removed extrusion position; and controlling extruder shutdown, squeeze job terminates.
Beneficial effect of the present invention:
Internal diameter of the present invention constant two ends wall thickness increases pressurizing unit and the pressing method of tubing, in extrusion process, by the extrusion molding selecting different extrusion dies to realize aluminium-alloy pipe front end pipeline section, middle pipeline section and rear end pipeline section, the disposable aluminium-alloy pipe squeezing out two ends external diameter and increase, the technological process of production is short, and production cost is low; Total Product uniform quality is stablized simultaneously, and aluminium-alloy pipe each section of inside and outside circle concentricity is good, and product quality is high.
Accompanying drawing explanation
Fig. 1 is the structural representation that this internal diameter constant two ends wall thickness increases the pressurizing unit of tubing.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in the figure, the present embodiment internal diameter constant two ends wall thickness increases the pressurizing unit of tubing, comprises the perforation tringle 1 of extrusion molding pipe orifice, the leading portion external diameter shaper 2 of extrusion molding front end pipeline section, the middle stage casing external diameter shaper 3 of pipeline section of extrusion molding and the back segment external diameter shaper 4 of extrusion molding rear end pipeline section;
The leading portion seal mould 202 that described leading portion external diameter shaper 2 comprises leading portion annular external mold 201, export for shutoff leading portion annular external mold 201, drive the first radial drive cylinder 5 that leading portion seal mould 202 does radial motion and the first axial driving cylinder 6 driving leading portion seal mould 202 to axially move, described leading portion annular external mold 201 is provided with the die cavity 7 matched with tubing leading portion profile;
Described stage casing external diameter shaper 2 is provided with the forming hole 8 that middle pipeline section external diameter matches with tubing, and stage casing external diameter shaper 2 is also provided with the first heater 9 of heating blank;
Described back segment external diameter shaper 4 comprises back segment annular external mold 401, the secondary heating mechanism 403 be arranged on back segment annular external mold, export for shutoff back segment annular external mold 401 and the back segment seal mould 402 be made up of at least two mould lobes, drive the second radial drive cylinder 10 that each mould lobe does radial motion and the second axial driving cylinder 11 driving each mould lobe to axially move, described back segment annular external mold 402 is provided with the die cavity matched with tubing back segment profile, and back segment seal mould 402 is provided with the clamping pass 404 that middle pipeline section external diameter matches with tubing.
In concrete enforcement, when the front end external diameter of aluminium-alloy pipe increase section and rear end external diameter increase section shape identical time, its leading portion annular external mold 201 and back segment annular external mold 401 can share, at this moment before extrusion in section and back segment process, leading portion annular external mold 201 and back segment annular external mold 401 are same mould, can not change, operate easier.Certainly for front end external diameter increase section and rear end external diameter increase section shape different time, so leading portion annular external mold 201 and back segment annular external mold 401 are just by least two pieces of mould lobe compositions, and it makees the 3rd radial drive cylinder of radial motion and drives its 3rd axial driving cylinder axially moved each mould lobe to be provided with driving, just die change can be realized so before extrusion, to complete the extrusion molding of different pipe sections when end tube section and rear end pipeline section.
Simultaneously before extrusion, rear pipeline section time, because leading portion seal mould 202 is different with back segment seal mould 402, therefore must die change in extrusion process; At this moment, under saving equipment cost or arrangement space not permission situation, first radial drive cylinder 5 and the second radial drive cylinder 10 can be same driving cylinder, first axial driving cylinder 6 and the second axial driving cylinder 11 also can be same driving cylinder, adopt a driving cylinder to need artificial replacement operation in die change process; Certainly in the situations such as arrangement space permission, first radial drive cylinder 5 and the second radial drive cylinder 10 can not share, first axial driving cylinder 6 and the second axial driving cylinder 11 can not share, driving cylinder can be controlled in such die change process directly to realize, without manual operation, production efficiency is higher, and namely the present embodiment belongs to this situation.
As the improvement to the present embodiment, the pressurizing unit that this internal diameter constant two ends wall thickness increases tubing also comprises extruder 12, pressure sensor 13 and controller 14, and described pressure sensor 13 is arranged on leading portion external diameter shaper 2 and back segment external diameter shaper 4; With measuring the pressure of blank to die cavity inwall, pressure sensor 13, for detecting blank to the pressure of die cavity inwall and by detection signal input control device 14, determines whether die cavity is full of by blank; Described controller 14 is for receiving with the detection signal of processing pressure sensor 13 and exporting control signal, to realize carrying out the action such as die change and extruding according to technological process to extruder 12, first heater 9, the axial driving cylinder 11 of secondary heating mechanism 403, first radial drive cylinder the 5, first axial driving cylinder 6, second radial drive cylinder 10, second, the 3rd radial drive cylinder and the 3rd axial driving cylinder.
The aforementioned internal diameter of the present embodiment constant two ends wall thickness increases the pressing method of the pressurizing unit of tubing, comprises the following steps:
1), controller 14 control the first radial drive cylinder 5 and the first axial driving cylinder 6 successively action leading portion seal mould 202 is fixed on leading portion annular external mold 201 oral area;
2) blank is clamp-oned stage casing external diameter shaper 3 and leading portion external diameter shaper 2 by pressure ram 15 action that, controller 14 controls extruder 12 successively;
3) when the pressure signal that the pressure sensor 13, on present segment external diameter shaper 2 detects reaches preset signals value, the die cavity of leading portion external diameter shaper 2 is filled, tubing leading portion has extruded, controller 14 first controls extruder 12 and suspends extruding, then control the first axial driving cylinder 6 and the first radial drive cylinder 5 successively action make leading portion seal mould 202 depart from leading portion annular external mold 201 oral area;
4), controller 14 pressure ram 15 that controls extruder 12 continues action, and blank is extruded from stage casing external diameter shaper 3 the middle pipeline section forming tubing;
5), when the intervalve segment length of tubing reaches preset value, controller 14 carries out following action successively:
A, control extruder 12 suspend extruding,
Leading portion annular external mold 201 is removed and back segment annular external mold 401 is moved to extrusion position by b, control the 3rd radial drive cylinder and the 3rd axial driving cylinder successively action,
C, control the second radial drive cylinder 10 and the second axial driving cylinder 11 successively action back segment seal mould 402 is moved to extrusion position, and by control second radial drive cylinder 10, back segment seal mould 402 is fixedly clamped the pipeline section squeezed out, concrete implement in clamp pass 404 design length can determine according to the size of required grip friction power;
D, control first heater 9 by blank heating to predetermined value,
E, control the pressure ram 15 of extruder 12 and blank is clamp-oned successively stage casing external diameter shaper 3 and back segment external diameter shaper 4, and control secondary heating mechanism 403 and heat;
6) when the pressure signal, detected when the pressure sensor on back segment external diameter shaper 4 reaches preset signals value; the die cavity of back segment external diameter shaper 4 is filled; tubing back segment has extruded; controller 14 control the second axial driving cylinder 11 and the second radial drive cylinder 10 successively action back segment seal mould 402 is removed extrusion position; and control extruder 12 and shut down, squeeze job terminates.
In this technique, when extrude tubes back segment, by controlling first heater 9 by blank heating to predetermined value, make the good fluidity of the blank in middle pipeline section, easierly squeezedly can compress into back segment external diameter shaper 4, to be fixedly clamped the pipeline section squeezed out by back segment seal mould 402 simultaneously, blank to be assembled in the die cavity of back segment external diameter shaper 4, thus completes the extrusion molding of rear end pipeline section.The present embodiment can make blank mobility in back segment external diameter shaper 4 better by controlling secondary heating mechanism 403 heating, can better ensure that blank is full of die cavity, improve product surface quality.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. internal diameter constant two ends wall thickness increases a pressurizing unit for tubing, it is characterized in that: comprise the perforation tringle of extrusion molding pipe orifice, the leading portion external diameter shaper of extrusion molding front end pipeline section, the middle stage casing external diameter shaper of pipeline section of extrusion molding and the back segment external diameter shaper of extrusion molding rear end pipeline section;
Described leading portion external diameter shaper comprise leading portion annular external mold, for the outlet of shutoff leading portion annular external mold leading portion seal mould, drive the first radial drive cylinder that leading portion seal mould does radial motion and the first axial driving cylinder driving leading portion seal mould to axially move, described leading portion annular external mold is provided with the die cavity matched with tubing leading portion profile;
Described stage casing external diameter shaper is provided with the forming hole that middle pipeline section external diameter matches with tubing, and stage casing external diameter shaper is also provided with the first heater of heating blank;
Described back segment external diameter shaper comprises back segment annular external mold, the secondary heating mechanism be arranged on back segment annular external mold, the back segment seal mould be made up of at least two mould lobes, drive the second radial drive cylinder that each mould lobe does radial motion and the second axial driving cylinder driving each mould lobe to axially move for the external mold outlet of shutoff back segment annular, described back segment annular external mold is provided with the die cavity matched with tubing back segment profile, and back segment seal mould is provided with the clamping pass that middle pipeline section external diameter matches with tubing.
2. internal diameter according to claim 1 constant two ends wall thickness increases the pressurizing unit of tubing, it is characterized in that: described leading portion annular external mold and back segment annular external mold form by least two pieces of mould lobes, and it makees the 3rd radial drive cylinder of radial motion and drives its 3rd axial driving cylinder axially moved each mould lobe to be provided with driving.
3. internal diameter according to claim 2 constant two ends wall thickness increases the pressurizing unit of tubing, it is characterized in that: also comprise extruder, pressure sensor and controller, described pressure sensor is arranged on leading portion external diameter shaper and back segment external diameter shaper, pressure sensor is for detecting the pressure of blank to die cavity inwall, and by detection signal input control device, described controller is for receiving the detection signal with processing pressure sensor, and to extruder, first heater, secondary heating mechanism, first radial drive cylinder, first axial driving cylinder, second radial drive cylinder, second axial driving cylinder, 3rd radial drive cylinder and the 3rd axial driving cylinder export control signal.
4. the constant two ends of internal diameter described in claim 3 wall thickness increases the pressing method of the pressurizing unit of tubing, it is characterized in that: comprise the following steps:
1), controller control the first radial drive cylinder and the first axial driving cylinder successively action leading portion seal mould is fixed on leading portion annular external mold oral area;
2), blank is clamp-oned stage casing external diameter shaper and leading portion external diameter shaper by the pressure ram action of controller control extruder successively;
3) when the pressure signal that the pressure sensor, on present segment external diameter shaper detects reaches preset signals value, tubing leading portion has extruded, controller first controls extruder and suspends extruding, then control the first axial driving cylinder and the first radial drive cylinder successively action make leading portion seal mould depart from leading portion annular external mold oral area;
4), controller control extruder pressure ram continue action, blank is extruded from stage casing external diameter shaper the middle pipeline section forming tubing;
5), when the intervalve segment length of tubing reaches preset value, controller carries out following action successively:
A, control extruder suspend extruding,
Leading portion annular external mold is removed and back segment annular external mold is moved to extrusion position by b, control the 3rd radial drive cylinder and the 3rd axial driving cylinder successively action,
C, control the second radial drive cylinder and the second axial driving cylinder successively action back segment seal mould is moved to extrusion position, and by control second radial drive cylinder, back segment seal mould is fixedly clamped the pipeline section squeezed out,
D, control first heater by blank heating to predetermined value,
Blank is clamp-oned stage casing external diameter shaper and back segment external diameter shaper by the pressure ram of e, control extruder successively, and controls secondary heating mechanism heating;
6) when the pressure signal, detected when the pressure sensor on back segment external diameter shaper reaches preset signals value; tubing back segment has extruded; controller control the second axial driving cylinder and the second radial drive cylinder successively action back segment seal mould is removed extrusion position; and controlling extruder shutdown, squeeze job terminates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310753595.3A CN103736768B (en) | 2013-12-31 | 2013-12-31 | Internal diameter constant two ends wall thickness increases pressurizing unit and the pressing method of tubing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310753595.3A CN103736768B (en) | 2013-12-31 | 2013-12-31 | Internal diameter constant two ends wall thickness increases pressurizing unit and the pressing method of tubing |
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| CN103736768A CN103736768A (en) | 2014-04-23 |
| CN103736768B true CN103736768B (en) | 2015-09-23 |
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| CN108274586B (en) * | 2017-12-31 | 2023-12-29 | 湖南省明丰达陶瓷琉璃瓦业有限公司 | Full-automatic cover tile Forming and pre-forming device |
| CN108687154A (en) * | 2018-08-02 | 2018-10-23 | 段波 | A kind of mold for extruding and forming of aluminium sheet and the manufacturing method of aluminium sheet |
| CN116967303A (en) * | 2022-04-21 | 2023-10-31 | 合肥美的电冰箱有限公司 | Forming method and forming die of muffler and muffler |
| CN118455295B (en) * | 2024-07-15 | 2024-09-24 | 洛阳理工学院 | Welding die for metal pipe shunt extrusion and material internal pressure measuring method |
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| JPH02274310A (en) * | 1989-04-13 | 1990-11-08 | Showa Alum Corp | Automatic shaping device and shaping method for extrudate |
| CN1326387A (en) * | 1998-10-09 | 2001-12-12 | 怀曼戈登公司 | Apparatus and method for forming pipe with increased wall-thickness at its end |
| CN101664769A (en) * | 2009-10-12 | 2010-03-10 | 福建金鑫钨业股份有限公司 | Extruding device of porous hard alloy profile |
| CN102921754A (en) * | 2012-11-14 | 2013-02-13 | 广东伟业铝厂有限公司 | Producing method of aluminum alloy seamless stage variable section pipe and preparation device |
| CN103286151A (en) * | 2012-02-28 | 2013-09-11 | 上海海隆石油管材研究所 | Preparation device and method for manufacturing inside and/or outside thickened aluminum alloy pipes with variable cross sections |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7537290B2 (en) * | 2005-12-16 | 2009-05-26 | U.S. Manufacturing Company | Light weight, stiffened, twist resistant, extruded vehicle axle |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02274310A (en) * | 1989-04-13 | 1990-11-08 | Showa Alum Corp | Automatic shaping device and shaping method for extrudate |
| CN1326387A (en) * | 1998-10-09 | 2001-12-12 | 怀曼戈登公司 | Apparatus and method for forming pipe with increased wall-thickness at its end |
| CN101664769A (en) * | 2009-10-12 | 2010-03-10 | 福建金鑫钨业股份有限公司 | Extruding device of porous hard alloy profile |
| CN103286151A (en) * | 2012-02-28 | 2013-09-11 | 上海海隆石油管材研究所 | Preparation device and method for manufacturing inside and/or outside thickened aluminum alloy pipes with variable cross sections |
| CN102921754A (en) * | 2012-11-14 | 2013-02-13 | 广东伟业铝厂有限公司 | Producing method of aluminum alloy seamless stage variable section pipe and preparation device |
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