CN102125953A - Dual-station expanding machine for special-shaped pipe with variable cross sections - Google Patents
Dual-station expanding machine for special-shaped pipe with variable cross sections Download PDFInfo
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- CN102125953A CN102125953A CN 201110088873 CN201110088873A CN102125953A CN 102125953 A CN102125953 A CN 102125953A CN 201110088873 CN201110088873 CN 201110088873 CN 201110088873 A CN201110088873 A CN 201110088873A CN 102125953 A CN102125953 A CN 102125953A
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Abstract
The invention discloses a dual-station expanding machine for a special-shaped pipe with variable cross sections, belonging to the field of machining; the dual-station expanding machine comprises a frame; the frame is provided with an upper mould, lower moulds, a main press cylinder and material supplying oil cylinders; the material supplying oil cylinders include a left material supplying oil cylinder and a right material supplying oil cylinder which are respectively fixed at two sides of the upper mould; the lower moulds include two sets of moulds which are arranged on a guide rail and used for working alternatively. The material supplying oil cylinders are fixed at two sides of the upper mould, so that the expanding machine provided by the invention can effectively reduce the volume of the oil cylinder and a working sealed chamber and can improve the servo control precision to realize rapid response and precise location. Meanwhile, the equipment structure is simplified, the equipment requirements are reduced and the manufacturing cost is reduced. The two sets of lower moulds are matched with the same upper mould during working, so that the lower moulds have two operation stations during working, one lower mould is expanded in a mould closing state and the other mould is stretched outside the frame to assemble and disassemble workpieces; therefore, the equipment waiting time is saved and the production efficiency is increased.
Description
Technical field
The present invention relates to a kind of variable cross-section special piece bulging equipment, be specially a kind of double, be shaping medium with the high-pressure water, be mainly used in the bulging equipment of the whole processing of variable-cross-section special shaped pipe fitting.
Background technology
The global formation part of variable cross-section opposite sex pipe fitting has advantages such as cost is low, in light weight, mechanical performance is superior, in a lot of industries demand that has a wide range of applications, especially in manufacturing fields such as automobile, aviation and mobile devices, section tube be applied in the performance height that has determined its integral device to a great extent.But simultaneously, the manufacturing of variable cross-section opposite sex pipe fitting has very high requirement to equipment, technology, bulging technology.Variable cross-section opposite sex pipe fitting generally adopts two kinds of traditional processing methods in the world at present, the firstth, assembly unit welds together to adopt mechanical external force to carry out behind the sectional forming required pipe fitting again, the part of moulding is in mechanical strength, appearance and size, performance like this, and aspects such as outward appearance are difficult to reach the requirement of expection.Second is to use standard press equipment, adopts the mode of mould to carry out bulging, and this mode is owing to good forming effect, and excellent product performance is used widely.Its deficiency is that equipment volume is huge, control accuracy is relatively poor, since pipe fitting in the bulging process on, a bed die and a left side, right feed supplement oil cylinder all will produce very big propulsive thrust, this propulsive thrust can cause, bed die produces a displacement or a left side in the bulging process, right feed supplement oil cylinder can't accurately be located and be caused bulging to fail, in order to keep the reliability and stability of equipment work, existing bulging equipment adopts three above beam four-column type hydraulic presses of standard 3000T to realize mostly, the bed die matched moulds is realized a left side with the high strength steel member that is fixed on the hydraulic press two ends, right feed supplement cylinder location.In addition, the bulging equipment of prior art adopts the corresponding counterdie of a patrix to constitute a sleeve forming mould, and patrix is fixed during work, is finished in an opening and closing process that workpiece is fixed, the matched moulds moulding, is separated and unload the work of workpiece with patrix by counterdie.As can be seen, the operating efficiency of former depends primarily on bed die action, particularly the time length of installation and removal workpiece, but under the situation of having only a bed die, it is very difficult improving the equipment operating efficiency.
Summary of the invention
The present invention is directed to the deficiency on the above-mentioned prior art, designed a kind of double variable cross-section special piece bulging machine, the bulging equipment volume that has solved prior art is huge, complicated operation, ineffective problem.
A kind of double variable cross-section special piece bulging machine of the present invention, comprise frame, mold, bed die, main cylinder pressure and feed supplement oil cylinder are arranged on frame, it is characterized in that described feed supplement oil cylinder comprises left feed supplement oil cylinder and right feed supplement oil cylinder, described two feed supplement oil cylinders are separately fixed at the both sides of mold.
Described a kind of double variable cross-section special piece bulging machine, it is characterized in that being separately installed with left feed supplement oil cylinder displacement transducer and right feed supplement oil cylinder displacement transducer on described left feed supplement oil cylinder and the right feed supplement oil cylinder, be fixed with left feed supplement oil cylinder locking piece respectively in the both sides of bed die and right feed supplement oil cylinder pin closes piece.
Described a kind of double variable cross-section special piece bulging machine is characterized in that being provided with two cover bed dies, is respectively bed die A and bed die B, and described two cover bed dies place on the same guide rail and with same drive unit under minute mould state and are connected.
Described a kind of double variable cross-section special piece bulging machine, drive unit wherein is included in the hydraulic motor of guide rail one end setting, with the chain of hydraulic motor coupling and place the sprocket wheel of the guide rail other end, have with the chain hole of chain cylindrical void coupling at the downside and the chain correspondence position of bed die and to sell.
Described a kind of double variable cross-section special piece bulging machine is characterized in that between main cylinder pressure and the bed die bottom plate being arranged, and positional cylinder is installed on bottom plate.
The present invention has adopted multinomial new technology, new technology, compared with prior art, its advantage be simple in structure, control accuracy is high, the digital control system by special use, Parameterized Design System be the complicated parameter calculation simplification that becomes, and is easy to operate.Left and right feed supplement oil cylinder directly is fixed on the left and right sides of mold, can effectively reduces the volume and the work sealing cavity volume of oil cylinder, improve the SERVO CONTROL precision, reach quick response and accurate location.Simultaneously all right simplified apparatus structure reduces the equipment requirement, reduces cost.By two cover bed die and same mold auxiliary works are set, make bed die that two operation positions arranged in the course of the work, bed die under the matched moulds state in the bulging another mould stretch out outside the framework, carry out the dismounting and the installation of workpiece, can save the equipment stand-by period, enhance productivity.
Description of drawings
Fig. 1 is vertical structure figure of the present invention;
Fig. 2 is a matched moulds state lateral junction composition of the present invention;
Fig. 3 is of the present invention minute mould state lateral junction composition;
The left feed supplement oil cylinder of the accurate guide pillar 3-counterdie gripper shoe 4-guide rail 5-V type chute 6-drawback cylinder 7-master cylinder pressure 8-column 9-underbeam 10-steel band prestressing force winding layer 11-mold 12-left feed supplement oil cylinder contiguous block 13-left feed supplement oil cylinder 14-left feed supplement oil cylinder locking piece 15-left feed supplement oil cylinder displacement transducer 16-right feed supplement oil cylinder contiguous block 17-right feed supplement oil cylinder 18-bed die 19-right feed supplement oil cylinder locking piece 20-right feed supplement oil cylinder displacement transducer 21-right feed supplement cylinder pressure head 22-of 1-upper beam 2-pressure head 23-hydraulic motor 24-positional cylinder 25-bottom plate 26-chain hole pin 27-chain among the figure
The specific embodiment
Following reference picture elaborates to a kind of double variable cross-section special piece bulging machine of the present invention.
Shown in the figure, a kind of double variable cross-section special piece bulging machine of the present invention has constituted stirrup frame by upper beam 1, underbeam 9 with the column 8 of both sides.Steel band prestressing force winding layer 10 is arranged, to overcome the propulsive thrust that upper and lower mould produces framework in the type process that rises in the stirrup frame outside.The upper beam of its mid frame is furnished with the drawback cylinder 6 of mold 11, bed die 18, bottom plate 25, main cylinder pressure 7 and both sides thereof from top to bottom successively from frame.In the both sides of bed die counterdie gripper shoe 3 is arranged, roller and chain hole pin 26 is arranged in counterdie gripper shoe bottom, the middle part of two heel posts is fixed with back-up block respectively, in the inboard of back-up block V-type chute 5 is arranged, bottom plate 25 can drive bed die and move up and down under the effect of main cylinder pressure 7 and drawback cylinder 6 along the V-type chute of both sides, realize matched moulds and separating action.The top of back-up block is fixed with guide rail 4 and is used to support the bed die behind the branch mould and bed die can be moved horizontally.
Shown in Figure 2 is the transversary schematic diagram of a kind of double variable cross-section special piece bulging machine of the present invention under the matched moulds state.Shown in the figure, the both sides of mold 11 are fixed with left feed supplement oil cylinder contiguous block 12 and right feed supplement oil cylinder contiguous block 16 respectively, and left feed supplement oil cylinder 13 is fixedlyed connected with left feed supplement oil cylinder contiguous block 12 by ring flange.Same right feed supplement oil cylinder 17 is fixedlyed connected with right feed supplement oil cylinder contiguous block 16 by ring flange.Both sides and described two ring flange relevant positions at bed die 18 are fixed with left feed supplement oil cylinder locking piece 14 and right feed supplement oil cylinder locking piece 19 respectively.The end of two feed supplement oil cylinders also is fixed with left feed supplement oil cylinder displacement transducer 15 and right feed supplement oil cylinder displacement transducer 20 respectively.
It is shown in Figure 3 that to be a kind of variable cross-section special piece bulging machine of the present invention be in transversary schematic diagram under the released state at mould up and down.It is bed die A and bed die B that two bed dies are arranged shown in the figure in orbit, wherein bed die A is positioned at the operating position, bed die B then is in ready position, at guide rail 4 one ends a hydraulic motor 23 by ratio system control is arranged, what link to each other with described hydraulic motor has chain 27 and places the sprocket wheel of the track other end.Be fixed with chain hole pin 26 in counterdie gripper shoe 3 bottoms.When mold separation dropped on the guide rail instantly, chain hole pin penetrated in the chain hole of chain 27.When hydraulic motor rotates, can drive bed die and move horizontally along guide rail.Accuracy when guaranteeing that bed die enters the operating position, nearly chain one side is equipped with positional cylinder 24 on bottom plate 25, when bed die under chain drive, when entering working position, rely on positional cylinder to realize accurately location.
Under the original state, main cylinder pressure 7 and drawback cylinder 6 withdrawals, upper and lower mould is in released state, left and right feed supplement oil cylinder is in the zero-bit position, one of them bed die is in the operating position, the ready position of another bed die outside framework, and positional cylinder 24 is in latched position.Workpiece is placed in the bed die 18 of ready position, after the work beginning, positional cylinder 24 unclamps, and the motion of hydraulic motor 23 chain drive-belts is sent the bed die of preparing the position into operating position in the framework.Main cylinder pressure 7 rises, the bed die 18 that drives bottom plate 25 and preparation position moves upward, realize upper and lower mould matched moulds, realize the accurate cooperation of upper and lower mould in the matched moulds process by accurate guide pillar 2, behind the matched moulds, main cylinder pressure passes through a liquid-water pressurized cylinder supercharging, the mold clamping force of kiloton in the generation by the precise hydraulic system.Left side feed supplement oil cylinder 13 and right feed supplement oil cylinder 17 advance simultaneously, drive left feed supplement oil cylinder pressure head 22 and right feed supplement oil cylinder pressure head 21 to the initial sealing position, outside pump working, intercommunicating pore water-filling in pipe fitting by the bed die left side, after water-filling is finished, left side feed supplement oil cylinder 13 and right feed supplement oil cylinder 17 advance once more, drive left feed supplement oil cylinder pressure head 22 and right feed supplement oil cylinder pressure head 21 to complete sealing station, another liquid-water pressurized cylinder begins action, the high-pressure water that produces is sent into tube intracavity by the intercommunicating pore in the right feed supplement oil cylinder pressure head 21, the pressure of tube intracavity high-pressure water raises gradually by predefined pressure curve, in this process, left side feed supplement oil cylinder 13 and right feed supplement oil cylinder 17 move on, and inwardly pushing pipe material is carried out the feed supplement action by the preset parameters requirement.Like this, under the comprehensive function power of inner high-pressure water bulging and outside pushing, the pipe fitting outer wall is close to the workpiece of the mold cavity deformation one-tenth needs of upper and lower mould formation.After bulging is finished, main cylinder pressure 7 off-loads, left side feed supplement oil cylinder 13 and right feed supplement oil cylinder 17 retreat into initial position, drawback cylinder 6 actions, driving bottom plate 25 and bed die 18 moves downward, with upper and lower mold separation, bed die drops on the guide rail 4 the most at last, positional cylinder 24 unclamps, 27 motions of hydraulic motor 23 chain drive-belts, the bed die 18 of operating position is shifted out framework dismantle workpiece outward, will prepare another bed die of position simultaneously and send into operating position in the framework, continue matched moulds and also begin the type process that next time expands.
A kind of double variable cross-section special piece bulging machine of the present invention, the left and right sides at mold is fixed with left feed supplement oil cylinder and right feed supplement oil cylinder respectively by bindiny mechanism, the feed supplement cylinder is directly installed on the mold both sides, can effectively reduce oil cylinder work sealing cavity volume, improve the SERVO CONTROL precision, simultaneously, the simplified apparatus structure reduces the equipment requirement.In described left and right feed supplement oil cylinder, precise displacement sensor is installed, detects left and right feed supplement oil cylinder displacement parameter, and it is fed back to digital control system, constitute the PID closed-loop control.
Described bulging machine is provided with two operation positions, participate in work simultaneously by two bed dies and a mold, bed die under the matched moulds state in the bulging another bed die stretching out dismounting and the installation of carrying out workpiece on the guide rail outside the framework, can save the equipment stand-by period, enhance productivity.Simultaneously, by a side of chain two positional cylinders are installed at bottom plate, when bed die under chain drive, when entering working position, rely on positional cylinder can realize accurate location.
Described bulging machine, be fixed with left and right feed supplement cylinder locking piece respectively in the both sides of bed die, after upper and lower mould matched moulds put in place, feed supplement oil cylinder flange embedded in the locking piece, with the oil cylinder locking, avoid in the type process that expands feed supplement oil cylinder owing to the propulsive thrust of highly pressurised liquid produces displacement.
Technical scheme of the present invention only relates to a kind of double variable cross-section special piece bulging machine hardware configuration.It need have the special-purpose software control system in the course of the work, and wherein each technological parameter adopts digital control system simulation, parametrization that technology is set, and has advantage simple to operate, convenient, flexible, that fault is few.Hydraulic Servo Control Technology has been adopted in the feed supplement process control of left and right feed supplement oil cylinder.In the pipe fitting bulging process, left side feed supplement oil cylinder and right feed supplement oil cylinder are worked under high pressure, heavy duty state, and the oil cylinder load variations is very big, accomplish response fast and accurate the location for guaranteeing the feed supplement oil cylinder according to the requirement of the bulging curve of Computer Simulation acquisition, be can pipe fitting reach the bulging requirement by the parameter of setting key link, utilized the high response of Hydraulic Servo Control Technology, high-frequency, high-precision characteristic that the feed supplement oil cylinder is accurately controlled for this reason and realized.
Claims (5)
1. double variable cross-section special piece bulging machine, comprise frame, mold (11), bed die (18), main cylinder pressure (7) and feed supplement oil cylinder are arranged on frame, it is characterized in that described feed supplement oil cylinder comprises left feed supplement oil cylinder (13) and right feed supplement oil cylinder (17), described two feed supplement oil cylinders (13,17) are separately fixed at the both sides of mold (11).
2. according to a kind of double variable cross-section special piece bulging machine of claim 1, it is characterized in that being separately installed with left feed supplement oil cylinder displacement transducer (15) and right feed supplement oil cylinder displacement transducer (20) on described left feed supplement oil cylinder (13) and the right feed supplement oil cylinder (17), be fixed with left feed supplement oil cylinder locking piece (14) respectively in the both sides of bed die (18) and right feed supplement oil cylinder pin closes piece (19).
3. according to a kind of double variable cross-section special piece bulging machine of claim 2, it is characterized in that being provided with two cover bed dies, be respectively bed die A and bed die B, described two cover bed dies place same guide rail (4) upward and with same drive unit to be connected under minute mould state.
4. according to a kind of double variable cross-section special piece bulging machine of claim 3, it is characterized in that hydraulic motor (23) that described drive unit is included in guide rail (4) one ends and is provided with, with the chain (27) of hydraulic motor coupling and place the sprocket wheel of guide rail (4) other end, have with the chain hole of chain cylindrical void coupling at the downside and the chain correspondence position of bed die (18) and to sell (26).
5. according to a kind of double variable cross-section special piece bulging machine of claim 3 or 4, it is characterized in that bottom plate (25) is arranged between main cylinder pressure and the bed die, positional cylinder (24) is installed on bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110088873 CN102125953B (en) | 2011-04-11 | 2011-04-11 | Dual-station expanding machine for special-shaped pipe with variable cross sections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110088873 CN102125953B (en) | 2011-04-11 | 2011-04-11 | Dual-station expanding machine for special-shaped pipe with variable cross sections |
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| Publication Number | Publication Date |
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| CN102125953A true CN102125953A (en) | 2011-07-20 |
| CN102125953B CN102125953B (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110088873 Expired - Fee Related CN102125953B (en) | 2011-04-11 | 2011-04-11 | Dual-station expanding machine for special-shaped pipe with variable cross sections |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226775A (en) * | 2014-09-02 | 2014-12-24 | 河北瑞邦新材料科技有限公司 | Hydraulic bulging machine |
| CN104384289A (en) * | 2014-12-08 | 2015-03-04 | 哈尔滨工业大学 | Large-tonnage short-stroke inner high pressure forming machine |
| CN105107923A (en) * | 2015-09-17 | 2015-12-02 | 浙江摩多巴克斯科技股份有限公司 | Internal high-pressure forming production line for pipes in intelligent factory |
| CN107557574A (en) * | 2017-10-11 | 2018-01-09 | 岳宪忠 | A kind of pelletizing former |
| CN107999598A (en) * | 2017-12-28 | 2018-05-08 | 苏州新元电器有限公司 | A kind of water swelling machine |
| CN109531882A (en) * | 2018-12-17 | 2019-03-29 | 湖南固虹机械制造有限公司 | A kind of synthetic resin watt integrated molding production mold |
| CN110227752A (en) * | 2019-06-21 | 2019-09-13 | 江西中鼎金属工艺有限公司 | A kind of metal closure water swelling molding equipment |
| CN110883228A (en) * | 2019-12-02 | 2020-03-17 | 长春智乐机械制造有限公司 | Internal high-pressure forming die |
| CN112275882A (en) * | 2020-09-21 | 2021-01-29 | 潍坊倍力汽车零部件有限公司 | Double-station type internal high-pressure forming device |
| CN112570541A (en) * | 2020-11-23 | 2021-03-30 | 飞荣达科技(江苏)有限公司 | Thin plate fluid bulging equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719114A (en) * | 1980-07-09 | 1982-02-01 | Hitachi Ltd | Method for forming hydraulic bulge of elbow |
| JPS57165134A (en) * | 1981-04-03 | 1982-10-12 | Hitachi Ltd | Hydraulic bulge working device |
| CN1530189A (en) * | 2003-03-13 | 2004-09-22 | 钰捷工业股份有限公司 | Aluminium-alloy pipe shaping method |
| CN101767140A (en) * | 2010-01-06 | 2010-07-07 | 哈尔滨理工大学 | Device and method for internal pressure forming of reducer pipes |
| CN201913147U (en) * | 2011-04-11 | 2011-08-03 | 山西方盛液压机电设备有限公司 | Double-station variable cross section abnormal tube bulging device |
-
2011
- 2011-04-11 CN CN 201110088873 patent/CN102125953B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719114A (en) * | 1980-07-09 | 1982-02-01 | Hitachi Ltd | Method for forming hydraulic bulge of elbow |
| JPS57165134A (en) * | 1981-04-03 | 1982-10-12 | Hitachi Ltd | Hydraulic bulge working device |
| CN1530189A (en) * | 2003-03-13 | 2004-09-22 | 钰捷工业股份有限公司 | Aluminium-alloy pipe shaping method |
| CN101767140A (en) * | 2010-01-06 | 2010-07-07 | 哈尔滨理工大学 | Device and method for internal pressure forming of reducer pipes |
| CN201913147U (en) * | 2011-04-11 | 2011-08-03 | 山西方盛液压机电设备有限公司 | Double-station variable cross section abnormal tube bulging device |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226775A (en) * | 2014-09-02 | 2014-12-24 | 河北瑞邦新材料科技有限公司 | Hydraulic bulging machine |
| CN104226775B (en) * | 2014-09-02 | 2016-06-15 | 河北瑞邦新材料科技有限公司 | A kind of hydraulic expanding-forming machine |
| CN104384289A (en) * | 2014-12-08 | 2015-03-04 | 哈尔滨工业大学 | Large-tonnage short-stroke inner high pressure forming machine |
| CN105107923A (en) * | 2015-09-17 | 2015-12-02 | 浙江摩多巴克斯科技股份有限公司 | Internal high-pressure forming production line for pipes in intelligent factory |
| CN107557574A (en) * | 2017-10-11 | 2018-01-09 | 岳宪忠 | A kind of pelletizing former |
| CN107999598A (en) * | 2017-12-28 | 2018-05-08 | 苏州新元电器有限公司 | A kind of water swelling machine |
| CN109531882A (en) * | 2018-12-17 | 2019-03-29 | 湖南固虹机械制造有限公司 | A kind of synthetic resin watt integrated molding production mold |
| CN110227752A (en) * | 2019-06-21 | 2019-09-13 | 江西中鼎金属工艺有限公司 | A kind of metal closure water swelling molding equipment |
| CN110227752B (en) * | 2019-06-21 | 2020-11-17 | 江西中鼎金属工艺有限公司 | Metal sealing part water expansion forming equipment |
| CN110883228A (en) * | 2019-12-02 | 2020-03-17 | 长春智乐机械制造有限公司 | Internal high-pressure forming die |
| CN112275882A (en) * | 2020-09-21 | 2021-01-29 | 潍坊倍力汽车零部件有限公司 | Double-station type internal high-pressure forming device |
| CN112570541A (en) * | 2020-11-23 | 2021-03-30 | 飞荣达科技(江苏)有限公司 | Thin plate fluid bulging equipment |
| WO2022105467A1 (en) * | 2020-11-23 | 2022-05-27 | 飞荣达科技(江苏)有限公司 | Fluid expansion apparatus for thin plate |
| US11975376B2 (en) | 2020-11-23 | 2024-05-07 | Frd Science & Technology (Jiangsu) Co., Ltd. | Fluid bulging equipment for thin plate parts |
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