CN105057433A - Multi-corrugation one-time forming device of EGR pipe and forming technology of multi-corrugation one-time forming device of EGR pipe - Google Patents
Multi-corrugation one-time forming device of EGR pipe and forming technology of multi-corrugation one-time forming device of EGR pipe Download PDFInfo
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- CN105057433A CN105057433A CN201510489045.4A CN201510489045A CN105057433A CN 105057433 A CN105057433 A CN 105057433A CN 201510489045 A CN201510489045 A CN 201510489045A CN 105057433 A CN105057433 A CN 105057433A
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Abstract
The invention discloses a multi-corrugation one-time forming device of an EGR pipe. The one-time forming device comprises two corrugation forming half cylinders surrounding the EGR pipe. The two corrugation forming half cylinders are correspondingly provided with forming half-cylinder mold combining devices respectively. Corrugation forming half grooves and corrugation top forming holes are formed in the inner walls of the two corrugation forming half cylinders. Corrugation top limiting molds are oppositely arranged on the outer sides of the corrugation forming half cylinders. Corrugation top limiting inserting pieces corresponding to the corrugation forming holes are arranged on the inner walls of the two corrugation top limiting molds respectively. The two corrugation top limiting molds are each connected with a limiting drive device. Forming half cylinder ejecting devices are arranged at the side portions of the two corrugation forming half cylinders respectively. A corrugation pressure forming device is arranged between the two corrugation forming half cylinders. One-time forming of multiple independent corrugations is achieved, consistency of the sizes such as the corrugation outer diameter, the corrugation outer outline and the length is effectively guaranteed, and the reliability of the EGR pipe is improved. Meanwhile, the production efficiency of the EGR pipe is greatly improved. The rejection rate and the assembling stress of the EGR pipe are greatly reduced.
Description
Technical field
The present invention relates to a kind of EGR pipe part many ripples one-shot forming apparatus, also relate to a kind of technique utilizing this device to carry out many ripple formings.
Background technology
Existing traditional endless corrugation process, no matter be which kind of bulging mode, all ripple ripple formings, not only production efficiency is low, and the external diameter of each ripple, ripple transition R, the uniformity such as wave pitch are poor, particularly the total length tolerance of multiple ripple can only control at 4 ~ 6mm, and owing to also there is the uneven reason of deformation in forming process, easily cause the bore at ripple forming position little compared with original bore, bending mandrel in bending operation is caused to pass through smoothly, all need by twice bending realization for pipe fitting assembly product structure, and it is as larger in previous corrugated tolerance, cause assembly bulk uniformity poor, percent defective is high, final is all ensure bulk by increasing correcting process, not only production efficiency is low, increasing production cost and correcting makes corrugated regions produce larger internal stress, assembly easily occurs that under engine luggine environment corrugated regions is damaged, the inefficacies such as cracking, significantly reduce the reliability of assembly.
Summary of the invention
Technical problem to be solved by this invention is to provide EGR pipe part many ripples one-shot forming apparatus that a kind of ripple forming is consistent, error is little.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of EGR pipe part many ripples one-shot forming apparatus, comprise for being set with two ripple formings half enclosing EGR pipe part, ripple forming described in two half respectively correspondence is provided with shaping half mold closing mechanism, the inwall of ripple forming described in two half is evenly arranged respectively some ripple forming half grooves, after two described ripple formings half fasten, corresponding arrange two described in ripple forming half groove form ripple forming annular groove, corresponding described ripple forming half groove of barrel of described ripple forming half is provided with corrugated top forming hole, the outside of described ripple forming half be relatively provided with two with the use of the spacing mould of corrugated top, on the inwall of the spacing mould of corrugated top described in two, corresponding each described ripple forming hole is respectively equipped with the spacing inserted sheet of corrugated top, the spacing inserted sheet of described corrugated top is semicircular structure, the diameter of the spacing inserted sheet of described corrugated top is corresponding to the diameter of described ripple forming half, the spacing mould of corrugated top described in two is connected to limit driving device, the sidepiece of ripple forming described in two half is respectively equipped with shaping half holding device, ripple pressure forming apparatus is provided with between ripple forming described in two half.
As preferred technical scheme, described shaping half mold closing mechanism comprises the matched moulds pressing plate be fixedly connected with described ripple forming half, described matched moulds pressing plate is provided with successively the perforation of passing for the spacing inserted sheet of each described corrugated top, described matched moulds pressing plate is at least provided with a matched moulds hold-down cylinder.
As preferred technical scheme, described limit driving device comprises the spacing mould driving cylinder be fixedly connected with the spacing mould of described corrugated top.
As preferred technical scheme, described shaping half holding device comprise corresponding with described ripple forming half slide arrange hold out against head, described in hold out against head and be fixedly connected with and hold out against driving cylinder.
As preferred technical scheme, described ripple pressure forming apparatus comprises the mandrel with through hole, and described mandrel one end is fixedly connected with mandrel driving cylinder, and the described mandrel other end is provided with the sealing block for EGR pipe part inner chamber described in shutoff relatively.
As preferred technical scheme, described sealing block periphery is provided with at least one closure gasket groove, is provided with sealing ring in described closure gasket groove.
As preferred technical scheme, described matched moulds hold-down cylinder, described spacing mould driving cylinder, described in hold out against driving cylinder and described mandrel driving cylinder is set to hydraulic cylinder or pneumatic cylinder respectively.
The invention still further relates to the technique of the many ripple formings of a kind of EGR pipe part, mainly comprise the following steps:
Step one, first described EGR pipe part is fixed between ripple forming described in two half, starts described in two and hold out against driving cylinder, make half matched moulds of ripple forming described in two encircle fixing by described EGR pipe part;
Spacing mould driving cylinder described in step 2, driving two, makes the spacing inserted sheet of each described corrugated top insert in corresponding described corrugated top forming hole;
Hold out against driving cylinder described in step 3, driving, hold out against head described in driving towards half movement of described ripple forming, and hold out against with ripple forming half socket joint is tactile;
Step 4, start described mandrel driving cylinder, and pressurizeed in the tube chamber of the described EGR pipe part between described mandrel and described sealing block by described through hole, make described mandrel advance vertically simultaneously, make described EGR pipe part realize preformed at the multiple described ripple forming half groove place of correspondence;
Step 5, spacing for described corrugated top inserted sheet outwards to be moved back, make the tube wall of described EGR pipe part form corrugated top to described corrugated top forming hole internal projection under the effect of the pressure;
Step 6, stopping pressurization, under the effect of described mandrel driving cylinder, described mandrel is made to continue to advance vertically, realize pressure release, the described driving cylinder that holds out against quits work, and holds out against head and return original position described in making, and opens described ripple forming half, described mandrel returns original position, the many ripple formings of described EGR pipe part.
As preferred technical scheme, described in be pressurised into and add hydraulic pressure or air pressure.
Owing to have employed technique scheme, the invention has the beneficial effects as follows: the one-shot forming achieving multiple independent ripple, effectively ensure that ripple external diameter, the uniformity of ripple outline and length equidimension, EGR pipe part length tolerance can be controlled in 0.5mm, and solve the defect of ripple forming position bore reduction, improve the reliability of EGR pipe part, significantly improve the efficiency that EGR pipe part is produced simultaneously, EGR pipe part first order buckling after ripple forming can be realized shaping, avoid bending at twice and cause the defect that bulk deviation is large, eliminate correcting process, significantly reduce percent defective and the erection stress of EGR pipe part.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 be the embodiment of the present invention shaping after the structural representation of the many corrugated portion of EGR pipe part;
In figure: 1-EGR pipe fitting; 2-ripple forming half; 3-ripple forming half groove; 4-corrugated top forming hole; The spacing mould of 5-corrugated top; The spacing inserted sheet of 6-corrugated top; 7-matched moulds pressing plate; 8-matched moulds hold-down cylinder; The spacing mould driving cylinder of 9-; 10-holds out against head; 11-holds out against driving cylinder; 12-mandrel; 13-mandrel driving cylinder; 14-sealing block; 15-sealing ring.
Detailed description of the invention
Below in conjunction with drawings and Examples, set forth the present invention further.In the following detailed description, the mode only by illustrating describes some one exemplary embodiment of the present invention.Undoubtedly, those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.
As depicted in figs. 1 and 2, a kind of EGR pipe part many ripples one-shot forming apparatus, comprise for being set with two ripple formings half 2 enclosing EGR pipe part 1, ripple forming described in two half 2 respectively correspondence is provided with shaping half mold closing mechanism, the inwall that ripple forming described in two is half 2 is evenly arranged respectively some ripple forming half grooves 3, after two described ripple formings half 2 fasten, corresponding arrange two described in ripple forming half groove 3 form ripple forming annular groove, i.e. ripple forming chamber, corresponding described ripple forming half groove 3 of the barrel that described ripple forming is half 2 is provided with corrugated top forming hole 4, the outside that described ripple forming is half 2 be relatively provided with two with the use of the spacing mould 5 of corrugated top, on the inwall of the spacing mould of corrugated top described in two 5, corresponding each described ripple forming hole is respectively equipped with the spacing inserted sheet 6 of corrugated top, the spacing inserted sheet 6 of described corrugated top is semicircular structure, the diameter of diameter and the described ripple forming half 2 of the spacing inserted sheet of described corrugated top 6 is corresponding, the spacing mould 5 of corrugated top described in two is connected to limit driving device, the sidepiece that ripple forming described in two is half 2 is respectively equipped with shaping half holding device, ripple pressure forming apparatus is provided with between ripple forming described in two half 2.
Described in the present embodiment, shaping half mold closing mechanism comprises the matched moulds pressing plate 7 be fixedly connected with described ripple forming half 2, described matched moulds pressing plate 7 is provided with successively the perforation of passing for the spacing inserted sheet 6 of each described corrugated top, described matched moulds pressing plate 7 is at least provided with a matched moulds hold-down cylinder 8.Described shaping half holding device comprise corresponding with described ripple forming half 2 slide arrange hold out against 10, described in hold out against 10 and be fixedly connected with and hold out against driving cylinder 11.Describedly hold out against 10 and coordinate a described matched moulds pressing plate 7 that two described ripple formings half 2 are carried out matched moulds to fix.
Described limit driving device comprises the spacing mould driving cylinder 9 be fixedly connected with the spacing mould of described corrugated top 5, and described spacing mould driving cylinder 9 moves up and down for driving the spacing mould of described corrugated top 5 and the spacing inserted sheet 6 of described corrugated top.
Described ripple pressure forming apparatus comprises the mandrel 12 with through hole, described mandrel 12 one end is fixedly connected with mandrel driving cylinder 13, described mandrel 12 other end is provided with the sealing block 14 for EGR pipe part 1 inner chamber described in shutoff relatively, hydraulic pressure or air pressure etc. can be utilized, be delivered in described EGR pipe part 1 by the through hole on described mandrel 12, so that the tube wall of described EGR pipe part 1 is carried out be installed with shaping.Described sealing block 14 periphery is provided with at least one closure gasket groove, is provided with sealing ring 15, prevents pressure release in described closure gasket groove, to ensure molding effect and efficiency.The hold-down cylinder of matched moulds described in the present embodiment 8, described spacing mould driving cylinder 9, described in hold out against driving cylinder 11 and described mandrel driving cylinder 13 is set to hydraulic cylinder or pneumatic cylinder respectively, various working cylinder and the mould associated components such as described ripple forming half 2, the spacing mould 5 of corrugated top can carry out installation by frame etc. to be fixed.
The moulding process of the present embodiment, comprises the following steps:
Step one, first described EGR pipe part 1 is fixed between ripple forming described in two half 2, starts described in two and hold out against driving cylinder 11, make the half 2-in-1 mould of ripple forming described in two encircle fixing by described EGR pipe part 1.
Spacing mould driving cylinder 9 described in step 2, driving two, makes the spacing inserted sheet of each described corrugated top 6 insert in corresponding described corrugated top forming hole 4.
Step 3, drive described in hold out against driving cylinder 11, hold out against 10 described in driving and move towards described ripple forming half 2, and contact with ripple forming half 2 and hold out against.
Step 4, start described mandrel driving cylinder 13, and pressurizeed in the tube chamber of the described EGR pipe part 1 between described mandrel 12 and described sealing block 14 by described through hole, make described mandrel 12 advance vertically simultaneously, make described EGR pipe part 1 realize preformed at multiple described ripple forming half groove 3 place of correspondence.Described being pressurised into adds hydraulic pressure or air pressure, when being not limited to hydraulic pressure or air pressure.
Step 5, spacing for described corrugated top inserted sheet 6 outwards to be moved back, make the tube wall of described EGR pipe part 1 form corrugated top to described corrugated top forming hole 4 internal projection under the effect of the pressure.
Step 6, stopping pressurization, under the effect of described mandrel driving cylinder 13, described mandrel 12 is made to continue to advance vertically, realize pressure release, the described driving cylinder 11 that holds out against quits work, and holds out against 10 and returns original position, open described ripple forming half 2 described in making, described mandrel 12 returns original position, described EGR pipe part ripple forming more than 1.
Present invention achieves the one-shot forming of multiple independent ripple, effectively ensure that ripple external diameter, the uniformity of ripple outline and length equidimension, EGR pipe part length tolerance can be controlled in 0.5mm, and solve the defect of ripple forming position bore reduction, improve the reliability of EGR pipe part, significantly improve the efficiency that EGR pipe part is produced simultaneously, EGR pipe part first order buckling after ripple forming can be realized shaping, avoid bending at twice and cause the defect that bulk deviation is large, eliminate correcting process, significantly reduce percent defective and the erection stress of EGR pipe part.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (9)
1. EGR pipe part many ripples one-shot forming apparatus, it is characterized in that: comprise for being set with two ripple formings half enclosing EGR pipe part, ripple forming described in two half respectively correspondence is provided with shaping half mold closing mechanism, the inwall of ripple forming described in two half is evenly arranged respectively some ripple forming half grooves, after two described ripple formings half fasten, corresponding arrange two described in ripple forming half groove form ripple forming annular groove, corresponding described ripple forming half groove of barrel of described ripple forming half is provided with corrugated top forming hole, the outside of described ripple forming half be relatively provided with two with the use of the spacing mould of corrugated top, on the inwall of the spacing mould of corrugated top described in two, corresponding each described ripple forming hole is respectively equipped with the spacing inserted sheet of corrugated top, the spacing inserted sheet of described corrugated top is semicircular structure, the diameter of the spacing inserted sheet of described corrugated top is corresponding to the diameter of described ripple forming half, the spacing mould of corrugated top described in two is connected to limit driving device, the sidepiece of ripple forming described in two half is respectively equipped with shaping half holding device, ripple pressure forming apparatus is provided with between ripple forming described in two half.
2. a kind of EGR pipe part many ripples one-shot forming apparatus as claimed in claim 1, it is characterized in that: described shaping half mold closing mechanism comprises the matched moulds pressing plate be fixedly connected with described ripple forming half, described matched moulds pressing plate is provided with successively the perforation of passing for the spacing inserted sheet of each described corrugated top, described matched moulds pressing plate is at least provided with a matched moulds hold-down cylinder.
3. a kind of EGR pipe part many ripples one-shot forming apparatus as claimed in claim 2, is characterized in that: described limit driving device comprises the spacing mould driving cylinder be fixedly connected with the spacing mould of described corrugated top.
4. a kind of EGR pipe part many ripples one-shot forming apparatus as claimed in claim 3, is characterized in that: described shaping half holding device comprise corresponding with described ripple forming half slide arrange hold out against head, described in hold out against head and be fixedly connected with and hold out against driving cylinder.
5. a kind of EGR pipe part many ripples one-shot forming apparatus as claimed in claim 4, it is characterized in that: described ripple pressure forming apparatus comprises the mandrel with through hole, described mandrel one end is fixedly connected with mandrel driving cylinder, and the described mandrel other end is provided with the sealing block for EGR pipe part inner chamber described in shutoff relatively.
6. a kind of EGR pipe part many ripples one-shot forming apparatus as claimed in claim 5, is characterized in that: described sealing block periphery is provided with at least one closure gasket groove, is provided with sealing ring in described closure gasket groove.
7. a kind of EGR pipe part many ripples one-shot forming apparatus as claimed in claim 6, is characterized in that: described matched moulds hold-down cylinder, described spacing mould driving cylinder, described in hold out against driving cylinder and described mandrel driving cylinder is set to hydraulic cylinder or pneumatic cylinder respectively.
8. the moulding process of a kind of EGR pipe part many ripples one-shot forming apparatus as claimed in claim 7, is characterized in that: comprise the following steps,
Step one, first described EGR pipe part is fixed between ripple forming described in two half, starts described in two and hold out against driving cylinder, make half matched moulds of ripple forming described in two encircle fixing by described EGR pipe part;
Spacing mould driving cylinder described in step 2, driving two, makes the spacing inserted sheet of each described corrugated top insert in corresponding described corrugated top forming hole;
Hold out against driving cylinder described in step 3, driving, hold out against head described in driving towards half movement of described ripple forming, and hold out against with ripple forming half socket joint is tactile;
Step 4, start described mandrel driving cylinder, and pressurizeed in the tube chamber of the described EGR pipe part between described mandrel and described sealing block by described through hole, make described mandrel advance vertically simultaneously, make described EGR pipe part realize preformed at the multiple described ripple forming half groove place of correspondence;
Step 5, spacing for described corrugated top inserted sheet outwards to be moved back, make the tube wall of described EGR pipe part form corrugated top to described corrugated top forming hole internal projection under the effect of the pressure;
Step 6, stopping pressurization, under the effect of described mandrel driving cylinder, described mandrel is made to continue to advance vertically, realize pressure release, the described driving cylinder that holds out against quits work, and holds out against head and return original position described in making, and opens described ripple forming half, described mandrel returns original position, the many ripple formings of described EGR pipe part.
9. the moulding process of a kind of EGR pipe part many ripples one-shot forming apparatus as claimed in claim 8, is characterized in that: described in be pressurised into and add hydraulic pressure or air pressure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510489045.4A CN105057433A (en) | 2015-08-11 | 2015-08-11 | Multi-corrugation one-time forming device of EGR pipe and forming technology of multi-corrugation one-time forming device of EGR pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510489045.4A CN105057433A (en) | 2015-08-11 | 2015-08-11 | Multi-corrugation one-time forming device of EGR pipe and forming technology of multi-corrugation one-time forming device of EGR pipe |
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| CN105057433A true CN105057433A (en) | 2015-11-18 |
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Cited By (6)
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| CN106623485A (en) * | 2017-03-07 | 2017-05-10 | 福州诺贝尔福基机电有限公司 | Turbocharging oil return pipe forming device and process |
| CN107952859A (en) * | 2018-01-08 | 2018-04-24 | 西安石油大学 | A kind of detachable hydraulic expanding die for being used to manufacture S type metal bellows |
| CN108856440A (en) * | 2018-06-13 | 2018-11-23 | 江苏普特瑞精密机械有限公司 | A kind of hot internal pressure manufacturing process of odd-shaped cross section bilayer pipe fitting |
| CN109622720A (en) * | 2018-12-28 | 2019-04-16 | 沈阳仪表科学研究院有限公司 | A kind of manufacturing method of high temperature resistant niobium alloy bellows component |
| CN109834150A (en) * | 2019-01-08 | 2019-06-04 | 上海航天精密机械研究所 | More wave duct hydraulic expanding-forming forming devices and method |
| CN110976659A (en) * | 2020-03-03 | 2020-04-10 | 深圳市乾行达科技有限公司 | Forming die of controllable deformation skin structure |
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- 2015-08-11 CN CN201510489045.4A patent/CN105057433A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106623485A (en) * | 2017-03-07 | 2017-05-10 | 福州诺贝尔福基机电有限公司 | Turbocharging oil return pipe forming device and process |
| CN107952859A (en) * | 2018-01-08 | 2018-04-24 | 西安石油大学 | A kind of detachable hydraulic expanding die for being used to manufacture S type metal bellows |
| CN107952859B (en) * | 2018-01-08 | 2024-04-12 | 西安石油大学 | Detachable hydraulic bulging die for manufacturing S-shaped metal corrugated pipe |
| CN108856440A (en) * | 2018-06-13 | 2018-11-23 | 江苏普特瑞精密机械有限公司 | A kind of hot internal pressure manufacturing process of odd-shaped cross section bilayer pipe fitting |
| CN108856440B (en) * | 2018-06-13 | 2019-11-05 | 江苏普特瑞精密机械有限公司 | A kind of hot internal pressure manufacturing process of odd-shaped cross section bilayer pipe fitting |
| CN109622720A (en) * | 2018-12-28 | 2019-04-16 | 沈阳仪表科学研究院有限公司 | A kind of manufacturing method of high temperature resistant niobium alloy bellows component |
| CN109834150A (en) * | 2019-01-08 | 2019-06-04 | 上海航天精密机械研究所 | More wave duct hydraulic expanding-forming forming devices and method |
| CN109834150B (en) * | 2019-01-08 | 2021-05-04 | 上海航天精密机械研究所 | Multi-wave tube hydraulic bulging forming method |
| CN110976659A (en) * | 2020-03-03 | 2020-04-10 | 深圳市乾行达科技有限公司 | Forming die of controllable deformation skin structure |
| CN110976659B (en) * | 2020-03-03 | 2020-06-30 | 深圳市乾行达科技有限公司 | Forming die of controllable deformation skin structure |
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Application publication date: 20151118 |