CN1099332C - Method for manufacturing cap of container - Google Patents
Method for manufacturing cap of container Download PDFInfo
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- CN1099332C CN1099332C CN98120046A CN98120046A CN1099332C CN 1099332 C CN1099332 C CN 1099332C CN 98120046 A CN98120046 A CN 98120046A CN 98120046 A CN98120046 A CN 98120046A CN 1099332 C CN1099332 C CN 1099332C
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- housing
- end socket
- bulging
- closure casing
- tube coupling
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Abstract
The present invention belongs to the field of sheet processing and forming, the purpose of which is to provide a method for manufacturing ellipsoidal caps, torispherical caps and other caps. The present invention is characterized in that an annular cannular closed housing is made first, the annular cannular closed housing is formed by welding a plurality of cylindrical branch sleeve groups, and the housing bulges out to make the housing generate a plastic deformation to change a welded joint with an un-straight angle at the external ring part of the annular cannular closed housing into a welded joint with a straight angle or an approximately straight angle; second, a part which does not compose the cap is cut from the annular cannular closed housing after the deformation occurs, and the annular cannular closed housing has two openings; then a new closed housing is obtained after two cover sheets are welded to the two openings, and the new closed housing bulges; finally, a cap is obtained after cutting the closed housing which bulges for the second time. Compared with the existing method of manufacturing caps, the present invention has the advantage of no need of large press or mould.
Description
The present invention relates to the vessel head processing method.Belong to Sheet Metal Processing shaping field.
End socket is the indispensable member of tankage, and different according to container application target and operating pressure can be adopted ellipsoidal head, dished (torispherical) head, hemispherical head, sphere end socket, band flanging or conical head (without straight flange), flat bottom cover etc.Dished (torispherical) head wherein, band toriconical head and flat bottom cover are made up of three parts, first is a land portions to dished (torispherical) head, the band toriconical head is conical surface part and is planar section to flat bottom cover, second portion is that highly (h approximates 0～50mm), and third part is the transition portion of above first and second portion for the cylindrical portions may of h.In the vertical section of end socket, the radius of curvature of this transition portion is r.Ellipsoidal head can be similar to replacement by dished (torispherical) head.As shown in Figure 1.Fig. 1 is the schematic diagram of various end sockets, wherein a) ellipsoidal head; B) dished (torispherical) head; C) flat shape end socket; D) band toriconical head.
The processing ellipsoidal head, dished (torispherical) head, the conventional method of band toriconical head and flat bottom cover has pressing, spinning method and Aeroform method.
Pressing is to utilize the method for mould forming head on forcing press.Divide whole pressing and burst pressing.Butt welding method need utilize mould and forcing press that plate is pressed into the dribbling face portion earlier after the burst punching press, and the assembly lobe of cylindrical portions may and transition portion is welded into end socket then.Pressing needs large-tonnage, and big work top forcing press and large mold could be produced large-sized end enclosure.When the end socket change in size, die size also needs to change, and this method often needs school shape, and stock utilization is low, and labour intensity large scale precision is low.This method is not suitable for the small lot of large-sized end enclosure, many variety production.
The spinning method is to make the plate rotation and utilize the spinning roller feed motion to realize that the revolution Plastic Forming processes a kind of method of required end socket.Rotary pressed head can be divided into unit method (promptly finishing seal head molding on an equipment) and two-shipper method again, promptly extrudes the land portions of end socket on drum pressure face, highly is the transition portion between the cylindrical portions may of h and sphere and the cylinder processing on the flanger then.It is little that the spinning method is compared the pressing deformation force, and the tool and mould size is little, and die cost is low.But spinning machine belongs to special equipment, the cost height.
Explosive forming is to utilize explosive to do the energy, goes out punch according to the end socket dimensioned, then with plate explosive forming repeatedly.Need change die during change of product.This method poor stability.
For the manufacturing of large-sized end enclosure, though spin-on process is suitable for, spinning holistic approach owned by France is made end socket.The end socket that diameter is big needs to cut into several portions and just can start shipment after spinning is finished.Therefore when the end socket diameter is big, removed the trouble of cutting again from, and can on-the-spot assemble with burst compacting back welding manufactured end socket.However, burst compacting back welding method also needs heating, manufacturing process complexity, cost height sometimes owing to need mould and forcing press.
Chinese invention patent 88107484.5 discloses a kind of method that adopts hydraulic expansion method to make large-sized end enclosure, its objective is that utilizing bulging manufactured large-sized end enclosure, its formation is to make the flat band rib of a sealing housing that is become by some cylinder shell assembly weldings earlier.Flat band rib housing is made up of three parts, and first is the plane, and second portion is that highly (h approximates 0～50mm), some above two-part transition portion for the polygon prism shell of 2h part.In the vertical section of flat band rib housing, the radius of curvature of this part is r.In this housing, exert pressure then, make housing profile slyness, after cutting obtains a pair of end socket by certain amount of plastic deformation.In actual applications, when the ratio of the vertical direction size of closure casing and the size of horizontal direction less than 0.8 time (the vertical direction size does not here comprise the 2h part), in the bulging process, the r of closure casing part is very little even for negative in the tension of broadwise, i.e. compression.Therefore, the size of housing vertical direction increases very fast, and the size of horizontal direction increases slow even reduces.Polyhedral shell will partly produce vertical fold at r, so the r of end socket part can not be configured as the appropriate section of end socket.Therefore, this method length ratio of being only applicable to dome head or minor axis and major axis is more than or equal to the manufacturing of 0.8 ellipsoidal head.And for the ratio of minor axis commonly used in the engineering and major axis less than 0.8 ellipsoidal head, dished (torispherical) head adopts this method to can not get qualified ellipsoidal head and dished (torispherical) head.
French Patent (FRP) FR 2326-997 discloses a kind of method and Chinese patent 87105773 that utilizes hydraulic expanding-forming to make spherical shell and discloses a kind of method of utilizing explosion method to make spherical container.When the ratio of the vertical direction size of polyhedral shell and the size of horizontal direction less than 0.8 the time, in the bulging process, polyhedral shell will because of the vertical direction size increase too fast produce wrinkling.Thereby bulging can not go on.The ratio that these two kinds of methods can not be used to make minor axis and major axis less than the ratio of 0.8 ellipsoidal head and height and end socket inside radius less than 0.8 dished (torispherical) head, band toriconical head and flat bottom cover.
Since the ratio that various deficiencies that above-mentioned traditional end socket manufacture method exists and above expanding method can not be used to make minor axis and major axis less than the ratio of 0.8 ellipsoidal head and height and end socket inside radius less than 0.8 dished (torispherical) head, band toriconical head and flat bottom cover.For a long time, people are seeking always and how to utilize dieless hydro bulging method manufacturing large scale ellipsoidal end socket, dished (torispherical) head, band toriconical head and flat bottom cover.
The objective of the invention is to propose a kind of bulging that utilizes and make ellipsoidal head, dished (torispherical) head, the method for band toriconical head and flat bottom cover etc.
Be convenient narration of the present invention, be defined as follows term earlier:
1) the middle face of plate shell
The face that the crossing gained line segment mid point of the normal of plate shell and plate shell two surfaces is constituted is called the middle face of plate shell.
2) center line in plate shell cross section
The intersection of face is called the center line in plate shell cross section in plate shell arbitrary section and the plate shell.
3) cylinder tube coupling
Middle face is the tube coupling of cylinder.This kind tube coupling can be twisted by plate and make.
Fig. 2 has provided the cylinder tube coupling of several forms.In Fig. 2, a) the expression cross section is the cylinder tube coupling of circle; B) the expression cross section is by two semicircles and two cylinder tube couplings that straightway is formed; C) part of two semicircles in expression cross section is by the cylinder tube coupling of straightway replacement, and rounding off is made in the junction of straightway and circular arc; D) part of two semicircles in expression cross section is by the cylinder tube coupling of the opposite curved section replacement of radius of curvature direction, and rounding off is made in the curved section that the radius of curvature direction is opposite and the junction of circular arc; E), f), g) and h) represent a) respectively, b), c) and d) the latter half in the cylindrical tube joint cross section adopts straightway to replace resulting cylinder tube coupling, shown in the figure is the situation of the rigidity of cylinder tube coupling the latter half much larger than the rigidity on top, can think during bulging that the latter half is indeformable, therefore need make that the solder joint of the first half and the latter half is circle before the bulging by preform, for rigidity of cylinder tube coupling the latter half and the little situation of stiffness differences of the first half, the solder joint of the first half and the latter half still is the straight line solder joint; I), j), k) and 1) represent a) respectively, b), c) with d) in the latter half in the cylindrical tube joint cross section adopt the curve different to replace resulting cylinder tube coupling with the first half, the rigidity of the cylinder tube coupling the latter half shown in the figure is much larger than the situation of the rigidity of the first half, can think during bulging that the latter half is indeformable, therefore need make the solder joint of the first half and the latter half for circular by preform, for rigidity of cylinder tube coupling the latter half and the little situation of stiffness differences of the first half, the solder joint of the first half and the latter half still is the straight line solder joint.In addition, cylinder tube coupling cross section shape can also be made many variations according to the needs of seal head forming.
4) hyperbolicity tube coupling
The curve of the crossing gained of the middle face of arbitrary plane and tube coupling is the tube coupling of curve.The tube coupling that all such curves are convex outer curve is called evagination hyperbolicity tube coupling.
5) straight angle welding point and non-flat fillet weld joint joint
The dihedral is that 180 ° welding point is referred to as straight angle welding point, and the dihedral is not equal to 180 ° welding point and is referred to as non-flat welded corner joint joint.
6) endless tube shape closure casing
The closed tube housing that is formed by some cylinder tube coupling assembly weldings is called endless tube shape closure casing.
7) annular inner portion of endless tube shape closure casing and outer ring portion
The imagination tangent with two horizontal planes and endless tube shape closure casing, then can obtain two closed curves, endless tube shape closure casing be called annular inner portion at two curves with interior part; Part beyond two curves is called outer ring portion.
8) the end socket component part of endless tube shape closure casing and cylinder tube coupling and non-end socket component part
In endless tube shape closure casing, the endless tube shape closure casing that becomes the end socket component part after bulging and cutting processing partly is called the end socket component part of tubulose closure casing; In endless tube shape closure casing, the endless tube shape closure casing that does not become the end socket component part after bulging and cutting processing partly is called the non-end socket component part of endless tube shape closure casing.Correspondingly, the cylinder tube coupling assembly welding art facial canal joint part that becomes endless tube shape closure casing and become the end socket component part after bulging and cutting processing is called the end socket component part of cylinder tube coupling; The cylinder tube coupling that cylinder tube coupling assembly welding becomes endless tube shape closure casing and do not become the end socket component part after bulging and cutting processing partly is called the non-end socket component part of cylinder tube coupling.
Purpose of the present invention can reach by following measure:
At first make an endless tube shape closure casing by a plurality of cylinder tube coupling assembly weldings one-tenth.Big this enclosure interior stowing pressure medium carries out bulging, makes the non-flat welded corner joint joint plastic deformation of its outer ring portion become the welding point of the straight angle or the approximate straight angle, and cylinder tube coupling evagination becomes the hyperbolicity tube coupling.Secondly cut out the ring of circumferential sealing in the endless tube shape closure casing after plastic deformation, it is the non-end socket component part that endless tube cuts out housing, make the endless tube shape closure casing after the plastic deformation become housing with two openings, two cover plates are soldered to two openings obtain new closure casing and fill with pressure medium and carry out bulging, make new closure casing cover plate and near zone generation plastic deformation and become the slick and sly or approximate slick and sly housing of evagination.Cut this housing at last and can obtain vessel head.
Purpose of the present invention can also reach by following measure:
1) makes an endless tube shape closure casing by a plurality of cylinder tube coupling assembly weldings one-tenth.These cylinder tube couplings are uniform thickness, and its cross section center line is a closed curve.This curve has a horizontal symmetry axis.Carry out bulging at this enclosure interior stowing pressure medium then, make non-flat welded corner joint joint plastic deformation the becoming straight angle or the approximate straight angle welding point of its outer ring portion, cylinder tube coupling evagination becomes the hyperbolicity tube coupling.Cut out the ring of circumferential sealing in the endless tube shape closure casing after plastic deformation, promptly non-end socket component part makes the endless tube shape closure casing after the plastic deformation have two openings.Obtain new closure casing and fill with pressure medium and carry out bulging at this two opening portion cover plate (surface plate or curved slab) of burn-oning then, make this housing cover and near zone generation plastic deformation and become the slick and sly or approximate slick and sly housing of evagination.Cut this housing at last and can obtain vessel head.
2) make an endless tube shape closure casing by a plurality of cylinder tube coupling assembly weldings one-tenth.Its cylinder tube coupling is the segmentation uniform thickness at its cross section, the section with section between thickness different, the cross section center line is a closed curve.In order to guarantee enough rigidity, can strengthen with muscle or plate non-end socket component part in case of necessity.The thickness of the thickness end socket component part of the non-end socket component part of endless tube shape closure casing.Carry out bulging at this enclosure interior stowing pressure medium, make non-flat welded corner joint joint plastic deformation the becoming straight angle or the approximate straight angle joint of its outer ring portion, cylinder tube coupling evagination becomes the hyperbolicity tube coupling.Ring or outer shroud cut out the ring of circumferential sealing in the endless tube shape closure casing after plastic deformation then, i.e. the non-end socket component part of endless tube shape closure casing makes the endless tube shape closure casing after the plastic deformation have two openings.Obtain new closure casing and fill with pressure medium and carry out bulging at burn-on plane cover plate or curved surface cover plate of this two opening, make this housing cover and near zone generation plastic deformation, housing becomes the slick and sly or approximate slick and sly housing of evagination.Cut this housing at last and obtain end socket.
3) under the certain situation of end socket diameter, the cylinder tube coupling of makeup ring tubulose closure casing is many more, and then non-flat welded corner joint joint approaches straight angle welding point more.But the length of weld seam is just big more.In order to reduce the quantity of cylinder tube coupling, obtain as far as possible non-flat fillet weld joint joint simultaneously near straight angle welding point, can earlier preprocessing be carried out in the end of cylinder tube coupling, the welding point of the annular enclosed housing outer shroud that is become by these cylinder tube coupling assembly weldings is straight angle welding point or approximate straight angle welding point.Make it that plastic deformation take place at this enclosure interior stowing pressure medium, cylinder tube coupling evagination becomes the hyperbolicity tube coupling.Cut out the ring of circumferential sealing in the closure casing after plastic deformation, it is the non-end socket component part of endless tube shape closure casing, make the endless tube shape closure casing after the plastic deformation have two openings, obtain new closure casing at burn-on plane cover plate or curved surface cover plate of this two opening then.Fill with pressure medium and make this housing cover and near zone generation plastic deformation, housing distortion becomes the slick and sly or approximate slick and sly housing of evagination.Cut this housing at last and can obtain vessel head.
In the measure of above-mentioned realization the object of the invention, used pressure medium is fluid such as water, oil, liquid lead, fused salt, air and analog thereof.Cylinder tube coupling, cover plate materials are the material that has plastic deformation ability and can weld.When adopting warm bulging or heat expansion shape, can utilize the outside covering and heat insulating of inner heating housing to be heated up, can also utilize the bulging process of the different distributions control housing of thickness on housing of insulation quilt by method.
The description of drawings of specification is as follows:
Various band cylinders of Fig. 1 and changeover portion end socket schematic diagram
The various cylinder tube coupling of Fig. 2 schematic diagram
Fig. 3 cross section is the cylinder tube coupling of circle
Fig. 4 cross section is the cylinder tube coupling of non-uniform thickness
Fig. 5 endless tube shape closure casing
Endless tube shape closure casing behind Fig. 6 bulging first time
The band shedding shell that endless tube shape closure casing obtains after cutting behind Fig. 7 bulging first time
The closure casing of Fig. 8 plate with cover
The closure casing that Fig. 9 obtains behind the bulging for the second time
The end socket that Figure 10 obtains through cutting
The big end conical head with straight flange of Figure 11
The housing of two openings of Figure 12 band
Figure 13 band toriconical head blank
Figure 14 flat bottom cover
The housing of two openings of Figure 15 band
Figure 16 flat bottom cover blank
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.These embodiment illustrate usefulness for example, rather than to the present invention other may embodiment restriction.
1) dished (torispherical) head manufacturing process (torispherical head)
Dished (torispherical) head is called torispherical head again, and it is made up of three parts.First is to be the spherical calotte of radius with R, and second portion is to be that highly h cylindrical shape part, third part are to connect above two-part transition portion, and its radius of curvature is r, shown in Fig. 1 b.In actual engineering, because major axis is a, minor axis is b, and a: b=2: it is the closed curve that the roundlet arc of the orthodrome of R=0.9D (D is 2a) and two sections radius r=0.17D that join with it (D is 2a) is formed that the elliptic curve of 1 normal ellipsoidal head can enough accurately be reduced to by two sections radiuses.Therefore, normal ellipsoidal head can replace with the dished (torispherical) head with above-mentioned dimensional parameters.This embodiment also can be used for the manufacturing of normal ellipsoidal head.
Manufacturing is the sphere of radius with R, when highly two-part radius of curvature is the dished (torispherical) head of transition portion composition of r for the cylindrical portions may of h and more than being connected, slab is rolled into Fig. 2 b) shown in the cylinder tube coupling.The loss of material in slot when considering the cutting closure casing, height h
1The height that requires than the cylindrical portions may of dished (torispherical) head is big slightly.In addition, the determining of the radius value of cylinder tube coupling roundlet arc part also will be considered the influence of the final value after follow-up distortion is to seal head forming, and also available other curve of little circular arc portion replaces, as oval curve and sine curve or the like.After the cylinder tube coupling machines, its assembly welding is become endless tube shape closure casing shown in Figure 5.Liquid is pumped in the closure casing with hydraulic test pump by liquid injecting mouth, press in will producing in the increase closure casing along with amount of liquid, plastic deformation will take place in pressure rising housing, the non-flat welded corner joint joint of outer ring portion will become straight angle welding point gradually, after stopping pressurization and emitting liquid, the horizontal cross sectional geometry of the outer ring portion of closure casing originally becomes circle, as shown in Figure 6.Can obtain having the housing of two openings a certain position cutting of the annular inner portion of closure casing, as shown in Figure 7.In Fig. 7, the position that has opening covers two cover plates and welds and obtains another closure casing, as shown in Figure 8.Fill in the closure casing in Fig. 8 with liquid and pressurization make cover plate and in encircle remainder and deform, this part forms spherical housing at last, as shown in Figure 9.Since for the first time the rigidity of the outer ring portion that obtains behind the bulging than cover plate and in the rigidity of ring remainder want big many, think plastic deformation do not take place during bulging in the second time so can be similar to.The end socket blank that obtains behind the bulging for the second time along horizontal symmetrical face cutting can obtain satisfying that the dished (torispherical) head size and dimension requires or approximately satisfying the end socket that size and dimension requires as shown in figure 10.
2) conical head with straight flange manufacturing process
As shown in figure 11 be to hold conical head with straight flange greatly.Generally speaking, when conical shell semiapex angle during, should adopt the flanging structure of band changeover portion greater than 30 °.It is made up of 3 parts.First is with diameter D
c, D
iBe the conical shell part of end face, second portion is to be that highly the cylindrical portions may of h, third part are the transition portions that connects with top, and its radius of curvature is r.When making such end socket, slab is rolled into Fig. 2 b) shown in the cylinder tube coupling.The loss of material in slot when considering the cutting closure casing, height h
1Height than the requirement of conical head with straight flange cylindrical portions may is big slightly.In addition, the radius value of cylinder tube coupling roundlet arc part determine also will consider the influence of follow-up distortion to seal head forming, also available other curve of little circular arc portion replaces, as oval curve and sine curve or the like.After the cylinder tube coupling machines, with its assembly welding one-tenth endless tube shape closure casing as shown in Figure 5, liquid is pumped in the closure casing with hydraulic test pump by liquid injecting mouth, press in will producing in the increase closure casing along with amount of liquid, pressure raises, plastic deformation will take place in housing, and the non-flat welded corner joint joint of outer ring portion will become straight angle welding point gradually, stop pressurization then and emit liquid.The horizontal cross sectional geometry of the outer ring portion of closure casing originally becomes circle, as shown in Figure 6.Can obtain having the housing of two openings a certain position cutting of closure casing, as shown in figure 12.Can obtain housing shown in Figure 13 at two openings conical shell of burn-oning.Cut this housing along the horizontal symmetrical face and can obtain conical head with straight flange.Also can be earlier along horizontal symmetrical face cutting housing shown in Figure 12, the conical shell of burn-oning then obtains being with toriconical head.For the situation of the restricted condition of conical shell outside diameter, as require D
iLess than D/2 (D
iBe the internal diameter of the big end of conical shell, D is the internal diameter of end socket cylindrical portions may), need obtain having the housing of two openings sometimes a certain position cutting of interior ring.The cover plate of burn-oning makes the housings close of band opening, and pressurization makes and is cut in the housing ring residual fraction and pulls out the appropriate section that is configured as conical head with straight flange.Cut cover plate and the final conical shell of burn-oning, cut this housing along the horizontal symmetrical face and can be held conical head with straight flange greatly.
3) manufacturing process of band flanging flat bottom cover
Figure 14 is the flat bottom cover of band flanging.It is made up of three parts, and first is to be the planar ends cover of d with the diameter, and second portion is to be that highly the cylindrical portions may of h, third part are the transition portions that connects with top, and its radius of curvature is r.When making such end socket, slab is rolled into Fig. 2 b) shown in the cylinder tube coupling.The loss of material in slot when considering the cutting closure casing, height h
1The height that requires than band flanging flat bottom cover cylindrical portions may is big slightly.In addition the radius value of cylinder tube coupling roundlet arc part determine also will consider the influence of follow-up distortion to seal head forming, also available other curve of little circular arc portion replaces, as oval curve and sine curve or the like.After the cylinder tube coupling machines, with its assembly welding one-tenth endless tube shape closure casing as shown in Figure 5, liquid is pumped in the closure casing with hydraulic test pump by liquid injecting mouth, press in will producing in the increase closure casing along with amount of liquid, pressure raises, plastic deformation will take place in housing, and the non-flat welded corner joint joint of outer ring portion will become straight angle welding point gradually, stop pressurization then and emit liquid.The horizontal cross sectional geometry of the outer ring portion of closure casing originally becomes circle, as shown in Figure 6.A certain position cutting on closure casing can obtain having the housing of two openings, as shown in figure 15.Can obtain closure casing at two openings plane cover plate of burn-oning.Cut this housing along the horizontal symmetrical face and can obtain flat bottom cover.Also can be earlier along horizontal symmetrical face cutting housing shown in Figure 15, the plane cover plate of burn-oning then obtains flat bottom cover.For the cover plate size situation of requirement is arranged, as require d, need obtain having the housing of two openings sometimes a certain position cutting of interior ring less than D/2 (d is the diameter of cover plate, and D is the internal diameter of end socket cylindrical portions may).The initial cover plate of burn-oning makes the housings close of band opening, and pressurizes to make to be cut and encircle the stretching and maintenance basic horizontal of residual fraction in the housing.Cut initial cover plate and the final cover plate of burn-oning, obtain the flat bottom cover blank, as shown in figure 16.Cut this housing and can obtain the flat bottom cover end socket.
Though above the present invention is set forth with reference to several possible embodiment of the present invention with way of example, should be appreciated that those skilled in the art person might make many variations and improved fully under scope that does not break away from the claims to be set forth and the situation of the conceiving spiritual essence.
In sum, the present invention's contrast end socket manufacture method in the past has following advantage:
1) do not need large pressing machine and mould can process ellipsoidal head, dished (torispherical) head, The band toriconical head, flat bottom cover etc.;
2) owing to do not need main equipment, thereby can directly make at the construction field (site) end socket;
3) the bulging housing does not crease easily, and can be used for processing large diameter thin wall end socket.
Claims (7)
1) a kind of method of utilizing bulging to make end socket, it is characterized in that (1) adopt and to have plastic deformation ability and welding material and make the endless tube shape closure casing that become by a plurality of cylinder tube coupling assembly weldings, and fill in this enclosure interior and to carry out bulging with pressure medium and make the non-flat welded corner joint joint distortion of its outer ring portion become the welding point of the straight angle or the approximate straight angle; (2) cutting out non-end socket component part in the endless tube shape closure casing after plastic deformation makes the endless tube shape closure casing after the plastic deformation have two openings; (3) obtain new closure casing and fill carrying out bulging with pressure medium its cover plate and near zone being deformed at the two opening parts cover plate of burn-oning, housing becomes the slick and sly or approximate slick and sly housing of evagination; (4) housing behind the bulging obtains end socket in the cutting (3).
2) the method for claim 1, the cylinder tube coupling is a uniform thickness, its cross section center line is a closed curve, this curve has a horizontal symmetry axis, the axis of symmetry is curve with the top and the axis of symmetry with the lower part or forms by three sections respectively, i.e. a curved section and two straightways tangent with curved section.
3) the method for claim 1, cylinder tube coupling are the segmentation uniform thickness on its cross section, and the thickness of non-end socket component part is greater than the thickness of end socket component part; Cylinder tube coupling end socket component part cross section center line is formed in the straightway of end points by curve with contact of a curve, or is made up of curved section.
4) as claim 1 or 3 described methods, the part of ring adopts muscle or plate to strengthen in the non-end socket component part, to guarantee enough rigidity.
5) as claim 1,2 or 3 described methods, cylinder tube coupling end is through preformed, and the welding point of the endless tube shape closure casing outer shroud that is become by these cylinder tube coupling assembly weldings is a straight angle welding point or near the welding point of the straight angle; Fill with pressure medium and carry out bulging in endless tube shape enclosure, the part that the cylinder tube coupling was not bent produces plastic deformation; Cutting out non-end socket component part in the endless tube shape closure casing after plastic deformation makes the endless tube shape closure casing after the distortion have two openings; Obtain new closure casing and fill carrying out bulging with pressure medium its cover plate and near zone being deformed at two openings cover plate of burn-oning, this housing becomes the smooth or approximate smooth housing of evagination; Cut this housing and can obtain end socket.
6) the method for claim 1, pressure medium are fluid, Ru Shui, oil, liquid lead, fused salt, gas and analog.
7) the method for claim 1, bulging is cold expanding shape or warm bulging or heat expansion shape, when adopting warm bulging or heat expansion shape, utilize the outside covering and heat insulating of inner heating housing to be heated up, can also utilize the bulging process of the different distributions control housing of thickness on housing of insulation quilt by method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98120046A CN1099332C (en) | 1998-09-28 | 1998-09-28 | Method for manufacturing cap of container |
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|---|---|---|---|
| CN98120046A CN1099332C (en) | 1998-09-28 | 1998-09-28 | Method for manufacturing cap of container |
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| CN1249218A CN1249218A (en) | 2000-04-05 |
| CN1099332C true CN1099332C (en) | 2003-01-22 |
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| CN98120046A Expired - Fee Related CN1099332C (en) | 1998-09-28 | 1998-09-28 | Method for manufacturing cap of container |
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| CN114273499B (en) * | 2021-12-21 | 2024-04-16 | 北京星航机电装备有限公司 | Annular sealing head of cabin, forming method of annular sealing head and semi-closed cabin |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2326997A1 (en) * | 1975-10-07 | 1977-05-06 | Charlatte Maurice | Forming hollow non-developable surfaces under fluid pressure - from developable surfaces approximating desired shape welded from sheet |
| CN1034152A (en) * | 1988-11-05 | 1989-07-26 | 王仲仁 | The paired expansion making method of end socket |
| CN1065610A (en) * | 1991-04-10 | 1992-10-28 | 哈尔滨工业大学 | The integral expansion making method of double-layer spherical container |
| CN1087849A (en) * | 1992-12-07 | 1994-06-15 | 自贡市鸿鹤化工总厂 | A kind of manufacturing process of container class end socket and device |
-
1998
- 1998-09-28 CN CN98120046A patent/CN1099332C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2326997A1 (en) * | 1975-10-07 | 1977-05-06 | Charlatte Maurice | Forming hollow non-developable surfaces under fluid pressure - from developable surfaces approximating desired shape welded from sheet |
| CN1034152A (en) * | 1988-11-05 | 1989-07-26 | 王仲仁 | The paired expansion making method of end socket |
| CN1065610A (en) * | 1991-04-10 | 1992-10-28 | 哈尔滨工业大学 | The integral expansion making method of double-layer spherical container |
| CN1087849A (en) * | 1992-12-07 | 1994-06-15 | 自贡市鸿鹤化工总厂 | A kind of manufacturing process of container class end socket and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1249218A (en) | 2000-04-05 |
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