CN203124510U - Hydraulic volume control molding device for metal bellows - Google Patents
Hydraulic volume control molding device for metal bellows Download PDFInfo
- Publication number
- CN203124510U CN203124510U CN 201320057697 CN201320057697U CN203124510U CN 203124510 U CN203124510 U CN 203124510U CN 201320057697 CN201320057697 CN 201320057697 CN 201320057697 U CN201320057697 U CN 201320057697U CN 203124510 U CN203124510 U CN 203124510U
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- China
- Prior art keywords
- mandrel
- capsule
- metal bellows
- gland
- vent line
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Abstract
The utility model relates to a hydraulic volume control molding device for metal bellows. The hydraulic volume control molding device for the metal bellows comprises a mandrel, a round groove is formed in the surface of the mandrel, an oil line is arranged on the back portion of the mandrel, the front end of the oil line is communicated with the round groove through a side oil line, a vent line is arranged on the front middle portion of the mandrel, the back end of the vent line is communicated with the round groove through a side vent line, and an O-shaped sealing ring and a venting bolt are arranged at the front end of the vent line. A rubber bag is arranged on the round groove, and two ends of the rubber bag are pressed tightly through a back pressing sleeve and a front pressing sleeve respectively. A washer and a sleeve shaft are arranged at the back end of the back pressing sleeve from front to back in sequence. A taper sleeve, a flat washer, a spring washer and a hex nut are arranged at the front end of the front pressing sleeve from back to front in sequence. A molding chuck is arranged at the back lower end of the rubber bag, and a molding sheet is arranged at the front lower end of the rubber bag. Bellows produced by the hydraulic volume control molding device are high in quality and high in wave uniform.
Description
Technical field
The utility model relates to bellows and makes the field, relates in particular to a kind of metal bellows hydraulic pressure volume control shaped device.
Background technology
Metal bellows is applied to automobile exhaust system gradually, mainly plays effects such as connection, compensation, noise elimination, damping.
The forming method that the metal current bellows is commonly used has: rubber-moulding, mechanical-moulded, hydraulic expanding type.Rubber-moulding is a kind of of type technology of expanding, and it is to be forming convax mould with rubber, and the shape of rubber convex moding is under pressure gone into concave die cavity moulding bellows to the pipe swelling pressure.Rubber-moulding equipment is simple, moulding fast, no seal request.But in the two-way extrusion process of rubber, rubber ring may produce axial displacement, drive steel pipe and move, thereby make the uniformity of the wave height of bellows and the pitch of waves relatively poor, and the ripple of moulding has corner angle.Mechanical-moulded is to utilize separable many lobes punch to expand outwardly, and makes the needed shape of steel pipe expansion, and behind the type that expands, the distinguish punch is retracted to initial position.Since gapped between the punch behind the punching block distinguish, the remaining local straightway of surface of the work meeting, and product quality is not high.Hydraulic expanding type is that pipe is being subjected under the inwall fluid pressure, after hydraulic coupling surpasses material yield intensity, and moulding ripple in the particular manufacturing craft chamber.There are two problems in hydraulic expanding type in the market, and the first is utilized the steel pipe inner wall sealing, and sealing ring has pre compressed magnitude, and the steel pipe front end need be opened horn mouth, and the steel pipe axial location is inaccurate, and it is unreliable to seal.Its two because diameter of steel tube, wall thickness and material difference, regulating the type pressure that expands does not have clear and definite reference index, the type pressure that expands is regulated and is had any problem, thereby makes the uniformity of the wave height of bellows and the pitch of waves relatively poor, the bellows Forming Quality is poor.The ripple forming of metal bellows is the critical process of making metal bellows, and the technology of the manufacturing metal bellows that these are commonly used all can't satisfy the actual demand of product quality.
Therefore, a kind of good former of bellows Forming Quality that makes of exigence.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple in structure, makes the good metal bellows hydraulic pressure volume control shaped device of bellows Forming Quality.
The technical scheme that the utility model adopts is: a kind of metal bellows hydraulic pressure volume control shaped device, it includes mandrel, the surperficial upper edge diameter of axle of described mandrel is to having circular groove, the two ends of described mandrel are provided with screw thread, the rear portion of described mandrel is provided with oil circuit, the oil circuit front end is connected with circular groove by side oil path, the middle front part of described mandrel is provided with vent line, the rear end of described vent line is connected with circular groove by the side vent line, and the front end of described vent line is provided with O RunddichtringO and bleeder screw; Described circular groove is provided with capsule, and the two ends of capsule compress by back gland and preceding gland respectively, and the rear end of described back gland is provided with packing ring and sleeve from front to back successively, and described sleeve matches with the rear thread of mandrel; The front end of gland is provided with tapered sleeve, plain washer, spring washer, hex nut from back to front successively before described, and described tapered sleeve matches with the preceding thread of mandrel; The posterior end of described capsule is provided with the moulding chuck, and the preceding lower end of described capsule is provided with matrix.
Press such scheme, described mandrel is provided with two shaft shoulders, and described circular groove places on the surface of the highest shaft shoulder section, and described capsule places on the highest shaft shoulder section.
Press such scheme, described capsule is made by polyurethane material, and the thickness at its two ends is greater than the thickness of mid portion.
Press such scheme, two end surfaces of described capsule have chamfering along the circumference car, form an inner groovy hollow cylinder that has chamfering.
Press such scheme, described forward and backward gland and capsule contact jaw car have inner conical surface.
Operation principle of the present utility model is: the utility model hydraulic pressure adopts volume control molding mode namely to replace the finishing die moulding by highly pressurised liquid extruding capsule, be embodied as: pipe is enclosed within on the mandrel, have oil circuit in the mandrel, mandrel one end connects oil pipe, the other end is equipped with bleeder screw, sealing mandrel in the capsule wall, thus make tapered sleeve extruding gland control the sealing property of capsule and mandrel contact-making surface by tightening hex nut.During moulding, the oil circuit of highly pressurised liquid in mandrel injects capsule, and the air in the capsule is got rid of by bleeder screw.Capsule extrusion tube blank inwall under the swelling pressure of highly pressurised liquid, raising along with hydraulic coupling, the pipe inwall is increased by the extruding force of capsule, after extruding force surpasses the yield limit of blank tube material, the crest height of prima also increases thereupon, pressure release when crest height reaches a certain predetermined value, and then with the moulding chuck pipe is compressed to designated length so that the complete wave mode of moulding.
The beneficial effects of the utility model are: 1, use the produced bellows quality of the utility model height, waveform uniformity height.2, adopt that the utility model makes the technology of bellows moulding simple, the good seal performance of molding assembly, need not special dies, make the cost of bellows moulding low.3, the high life of capsule, easy to operate.4, use the produced corrugated pipe products steady quality of the utility model reliable, the production efficiency height.5, the utility model can be finished the production of the bellows of various parameters.
Description of drawings
Fig. 1 is the cross-sectional view of an embodiment of the present utility model.
Fig. 2 is the generalized section of mandrel.
Fig. 3 is the generalized section of capsule.
Fig. 4 is the overall structure schematic diagram of capsule.
Among the figure: 1, mandrel, 2, packing ring, 3-1, preceding gland, 3-2, back gland, 4, capsule, 5, steel pipe, 6, tapered sleeve, 7, plain washer, 8, spring washer, 9, hex nut, 10, O-ring seals, 11, bleeder screw, 12, sleeve, 13, the moulding chuck, 14, matrix, 15, circular groove, 16, oil circuit, 17, side oil path, 18, vent line, 19, the side vent line, 20, pipe.
The specific embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
With reference to Fig. 1-Fig. 4, axially be directional reference with mandrel 1, near the direction of bleeder screw 11 for advance and before, away from the direction of bleeder screw 11 for the back with move back.
A kind of metal bellows hydraulic pressure volume control shaped device, it includes mandrel 1, described mandrel 1 is provided with two shaft shoulders, at the surperficial upper edge of the highest shaft shoulder section diameter of axle to having circular groove 15, the two ends car of described mandrel 1 has screw thread, the rear portion of described mandrel 1 is provided with oil circuit 16, oil circuit 16 front ends are connected with circular groove 15 by side oil path 17, the middle front part of described mandrel 1 is provided with vent line 18, the rear end of described vent line 18 is connected with circular groove 15 by side vent line 19, and the front end of described vent line 18 is provided with O RunddichtringO 10 and bleeder screw 11; Described circular groove 15 is provided with capsule 4, and the two ends of capsule 4 compress by back gland 3-2 and preceding gland 3-1 respectively, and the rear end of described back gland 3-2 is provided with packing ring 2 and sleeve 12 from front to back successively, and described sleeve 12 matches with the rear thread of mandrel 1; The front end of gland 3-1 is provided with tapered sleeve 6, plain washer 7, spring washer 8, hex nut 9 from back to front successively before described, and described tapered sleeve 6 matches with the preceding thread of mandrel 1; The posterior end of described capsule 4 is provided with moulding chuck 13, and the preceding lower end of described capsule 4 is provided with matrix 14.
In the present embodiment, described capsule 4 is made by polyurethane material, and the thickness at its two ends is greater than the thickness of mid portion.Two end surfaces of described capsule 4 have chamfering along the circumference car, form an inner groovy hollow cylinder that has chamfering.Described forward and backward gland and capsule 4 contact jaw cars have inner conical surface.
In the present embodiment, mandrel 1 is solid, and the equal car in two ends has screw thread, and mandrel 1 inside has oil circuit and exhaust channel.Capsule 4 is installed for convenience and is guaranteed capsule 4 and the good seal performance of mandrel 1, at mandrel 1 axial centre position car two shaft shoulders are arranged.Make capsule 4 be subjected to hydraulic coupling even when injecting highly pressurised liquid, along diameter of axle direction, open all circular grooves at the axle centre of surface place that the highest shaft shoulder section is arranged.
During use, mandrel 1 is placed in the pipe 20, and capsule 4 is enclosed within on the mandrel 1 by shaft shoulder location.The rear and front end of capsule 4 is by the gland sealing and fixing, back gland 3-2 rear is equipped with packing ring 2, and preceding gland 3-1 the place ahead is equipped with tapered sleeve 6, and plain washer 7 is installed in the place ahead of tapered sleeve 6, plain washer 7 the place ahead mounting spring packing rings 8, two hex nuts are installed in spring washer 8 the place aheads.Above-mentioned mandrel 1 threaded one end connects sleeve 12, and by sleeve 12 location, the other end connects bleeder screw 11, and bleeder screw 11 adopts O-ring seals 10 sealings.
Above-mentioned gland 3 is hollow cylinder, is enclosed within on the mandrel 4, and by mandrel 4 shaft shoulders location.Gland 3 and capsule 4 contact jaw cars have the inner conical surface of certain angle.Above-mentioned capsule 4 is in order to be locked mandrel 1 and play sealing function, and the thickness at its two ends forms a groove greater than the thickness of mid portion, and capsule 4 both ends of the surface tables have chamfering along the circumference car.Be provided with steel pipe in the above-mentioned vent line.Above-mentioned tapered sleeve 6 is hollow centrum, and it is threaded with mandrel 1.
The sealing property of above-mentioned mandrel 1 and capsule 4 contact-making surfaces is regulated by hex nut 8, be embodied as: tighten hex nut 8, hex nut 8 extruding tapered sleeves 6, because gland 3 core shaft end sleeves 12 and packing ring 2 location are dead, gland 3 inner cars have the conical surface, when tapered sleeve 6 extruding glands 3, gland 3 moves along capsule 4 end-bevelings and compresses capsule 1, thus the contact-making surface of seal capsule 4 and mandrel 1.
Adopting and manually processing a ripple is example, and referring to Fig. 1, behind the artificial location of pipe, matrix 14 closes.Inject highly pressurised liquid, highly pressurised liquid enters capsule 4 by the oil circuit 16 of mandrel 1 inside, and the air in the capsule 4 is got rid of by bleeder screw 11.Because gland is dead by the sleeve 12 of mandrel 1 end and packing ring 2 location, the inner car of gland has the conical surface, tapered sleeve 6 extruding glands, and gland moves along capsule 4 end-bevelings and compresses capsule 4, the contact-making surface of seal capsule 4 and mandrel 1, capsule 4 forms a seal cavity with mandrel 1.Capsule 4 is subjected to the swelling pressure of the hydraulic coupling extrusion tube blank 20 that radially swells, and along with the increase of hydraulic coupling, after the yield limit of extruding force greater than pipe 20, capsule 4 extrusion tube blanks 20 form the prima of certain altitudes, finishes the prima type that expands.After the bloated type of prima is finished, eliminate hydraulic coupling, capsule 4 is compressed to designated length down to the complete wave mode of moulding by moulding chuck 13 with pipe 20 again by self spring force contraction recovery, finishes ripple forming.
Metal pipe for a certain model, the size of capsule is determined, capsule and pipe inwall contact area are certain, volume that thus can strict control pipe to be formed zone, highly pressurised liquid application of force swelling pressure capsule makes the tube wall stress equalization during moulding, shaping dope pressure can adapt to thickness of pipe wall and material automatically and changes in addition, so thickness of pipe wall and material difference do not have influence to ripple forming, produced bellows quality height, waveform uniformity height.
Claims (5)
1. a metal bellows hydraulic pressure volume is controlled shaped device, it is characterized in that: it includes mandrel, the surperficial upper edge diameter of axle of described mandrel is to having circular groove, the two ends of described mandrel are provided with screw thread, the rear portion of described mandrel is provided with oil circuit, the oil circuit front end is connected with circular groove by side oil path, the middle front part of described mandrel is provided with vent line, the rear end of described vent line is connected with circular groove by the side vent line, and the front end of described vent line is provided with O RunddichtringO and bleeder screw; Described circular groove is provided with capsule, and the two ends of capsule compress by back gland and preceding gland respectively, and the rear end of described back gland is provided with packing ring and sleeve from front to back successively, and described sleeve matches with the rear thread of mandrel; The front end of gland is provided with tapered sleeve, plain washer, spring washer, hex nut from back to front successively before described, and described tapered sleeve matches with the preceding thread of mandrel; The posterior end of described capsule is provided with the moulding chuck, and the preceding lower end of described capsule is provided with matrix.
2. metal bellows hydraulic pressure volume as claimed in claim 1 is controlled shaped device, and it is characterized in that: described mandrel is provided with two shaft shoulders, and described circular groove places on the surface of the highest shaft shoulder section, and described capsule places on the highest shaft shoulder section.
3. metal bellows hydraulic pressure volume as claimed in claim 1 or 2 is controlled shaped device, and it is characterized in that: described capsule is made by polyurethane material, and the thickness at its two ends is greater than the thickness of mid portion.
4. metal bellows hydraulic pressure volume as claimed in claim 3 is controlled shaped device, and it is characterized in that: two end surfaces of described capsule have chamfering along the circumference car, form an inner groovy hollow cylinder that has chamfering.
5. metal bellows hydraulic pressure volume as claimed in claim 1 is controlled shaped device, and it is characterized in that: described forward and backward gland and capsule contact jaw car have inner conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320057697 CN203124510U (en) | 2013-02-01 | 2013-02-01 | Hydraulic volume control molding device for metal bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320057697 CN203124510U (en) | 2013-02-01 | 2013-02-01 | Hydraulic volume control molding device for metal bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203124510U true CN203124510U (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320057697 Expired - Lifetime CN203124510U (en) | 2013-02-01 | 2013-02-01 | Hydraulic volume control molding device for metal bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203124510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071710A (en) * | 2013-02-01 | 2013-05-01 | 吕季明 | Hydraulic volume control forming device for metal corrugated pipe |
-
2013
- 2013-02-01 CN CN 201320057697 patent/CN203124510U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071710A (en) * | 2013-02-01 | 2013-05-01 | 吕季明 | Hydraulic volume control forming device for metal corrugated pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |