CN220635945U - Flanging device for tail gas aftertreatment device cylinder - Google Patents
Flanging device for tail gas aftertreatment device cylinder Download PDFInfo
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- CN220635945U CN220635945U CN202322358914.2U CN202322358914U CN220635945U CN 220635945 U CN220635945 U CN 220635945U CN 202322358914 U CN202322358914 U CN 202322358914U CN 220635945 U CN220635945 U CN 220635945U
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- 238000005336 cracking Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The utility model provides a flanging device for a cylinder body of a tail gas aftertreatment device, which mainly solves the problem of inaccurate surface profile of a flanging position by extruding and forming an inner die from the center to the outside.
Description
Technical Field
The utility model relates to the technical field of production equipment of tail gas aftertreatment devices, in particular to a flanging device for a tail gas aftertreatment device cylinder.
Background
One of the current manners of connecting the cylinders is V-clamp hoop connection, the end face of one cylinder is humped, the cylinder connected with the hump is turned over, the edge of a cylinder type post-treatment device shown in figure 1 is provided with turned over, and the turned-over cylinder is formed in the market mainly in a spinning manner or by an oil press for a stamping die. The spinning mode is low in efficiency, and the welding seam of the barrel body is high in risk, high in cost and poor in universality in the mode of forming by the stamping die. For this purpose, it is necessary to find other available solutions to replace the existing solutions of spinning or stamping dies.
In the prior art, as disclosed in Chinese patent publication No. CN111360162A, a die for producing a stainless steel hump tube is used as a hump on the end face of the tube body, and a port die molding mode is generally adopted for molding the hump tube body: the internal mold is extruded from the center to the outside. The skilled artisan contemplates improving hump dies for barrel flanging.
When the hump barrel is formed, both sides of the forming position are drawn, the outer die is stressed symmetrically, the outer die does not have the tendency of axial deviation, but technical personnel find that the flanging of the barrel cannot be well completed by simply changing the conventional hump die, and the flanging barrel is formed into a single-side forming mode, the outer die bears the force obliquely above, and the outer die has the problem of upward deviation, so that the surface profile of the flanging position is unqualified.
Disclosure of Invention
According to the flanging device for the tail gas aftertreatment device cylinder, the inner die is extruded and molded from the center to the outside, the problem that the surface profile of the flanging position is not right is solved, and the flanging device is high in working efficiency, low in cracking risk of the cylinder and good in universality.
The technical scheme is as follows: the utility model provides a flanging device for tail gas aftertreatment device barrel, is in including external mold and setting the inboard centre form of external mold, the centre form includes a plurality of can splice into circular shape fan-shaped internal mold body, the arc position of fan-shaped internal mold body is provided with the turn-ups shaping step, the inner periphery of external mold corresponds and is provided with the turn-ups boss the lower extreme at the arc position of fan-shaped internal mold body is equipped with spacing boss, the inboard correspondence of external mold be equipped with spacing boss complex spacing groove, be located the center of fan-shaped internal mold body is provided with the awl that rises, the lower extreme of awl that rises is connected with actuating mechanism, actuating mechanism drive the awl that rises extrudees fan-shaped internal mold body, turn-ups shaping step with turn-ups boss cooperation is to the barrel turn-ups that is located between fan-shaped internal mold body and the external mold.
Further, the angle of the molding surface of the flanging molding step of the fan-shaped inner die body is increased by X degrees more than the angle of the flanging of the cylinder body, X is more than 0 and less than or equal to 10, and Y degrees more than the angle of the flanging of the cylinder body, Y is more than 0 and less than or equal to 10.
Further, a barrel limiting step is further arranged at the lower end of the flanging forming step, and a height adjusting gasket is arranged on the barrel limiting step.
Further, the outer die comprises a plurality of fan-shaped outer die bodies which can be spliced into a round shape; the outside of fan-shaped outer die body is provided with the connecting block, fan-shaped outer die body passes through the connecting block and connects outside harmomegathus device, outside harmomegathus device can drive the radial harmomegathus of fan-shaped outer die body.
Further, the fan-shaped inner die comprises a core die and a fan-shaped forming die arranged on the outer side of the core die, the flanging forming step is arranged on the fan-shaped forming die, and the core die and the fan-shaped forming die are connected together in a matched mode through a wedge-shaped block and a wedge-shaped groove.
Further, a plurality of expansion pyramid guide surfaces are arranged on the expansion cone for the number of the fan-shaped inner die bodies, and a conical surface matched with the expansion pyramid guide surfaces is arranged on the inner side of the core die.
Further, a spring clamping groove is formed in the outer side of the core die, and the spring is sleeved on the spring clamping groove which is round.
Further, the core mold extends to the lower end of the fan-shaped forming mold, a bottom boss is arranged at the lower end of the fan-shaped forming mold, and an annular cover plate sleeved on the core mold is arranged on the bottom boss.
Further, the lower extreme of mandrel is provided with the centre form carousel, the spacing draw-in groove has been seted up on the up end of centre form carousel, be equipped with the stopper on the lower terminal surface of mandrel, the mandrel with link together through stopper and spacing draw-in groove between the centre form carousel.
Further, the upper end of the fan-shaped inner die body is fixedly provided with a limiting top plate in a matched mode through the mounting holes and bolts, and the limiting top plate extends to the outer side of the fan-shaped inner die body.
According to the flanging device for the tail gas aftertreatment device cylinder, a limiting boss is designed between the inner die and the outer die, the outer die is fixed by virtue of the inner die, and the outer die bears an oblique upward force when the flanging part is molded; the inner die and the core die of the equipment are fixed and do not move upwards basically and only move in the radial direction, the outer die is pressed in the process of moving the inner die by making a limiting boss on the inner die, the outer die is prevented from moving upwards, the surface profile of the flanging meets the flanging requirement, the angle of the forming position of the inner die and the outer die is increased by a certain degree compared with the flanging angle by considering the rebound of materials and the upward deviation of the outer die, the phenomenon of upward deviation of the outer die is reduced, the flanging device is high in working efficiency, low in barrel cracking risk and good in universality, when the flanging device for the barrel of the tail gas aftertreatment device is used for flanging, the driving mechanism is used for driving the expansion cone to extrude the fan-shaped inner die body, and the flanging forming step is matched with the flanging boss to be positioned between the fan-shaped inner die body and the outer die body for flanging, so that the working efficiency is high, the barrel cracking risk is low, and the universality is good.
Drawings
FIG. 1 is a schematic illustration of a flanging device for a barrel of an exhaust aftertreatment device according to the present utility model for flanging the barrel;
FIG. 2 is a schematic diagram of a flanging device for an exhaust aftertreatment device cylinder of an embodiment;
FIG. 3 is a cross-sectional view taken along the B-B direction of FIG. 2;
FIG. 4 is a schematic view of a flanging of an expansion cone extrusion inner die of a rear flanging device for hiding a fan-shaped inner die body and a fan-shaped outer die body;
FIG. 5 is a schematic view of the expansion cone after retraction of the flanging device after hiding one of the inner and outer fan-shaped mold bodies;
FIG. 6 is a schematic view showing the cooperation of the core mold and the sector-shaped mold in the embodiment;
FIG. 7 is a schematic view of a fan-shaped casing according to an embodiment;
fig. 8 is a schematic view of a flanging device for flanging a short cylinder.
Detailed Description
In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects achieved clearer, the technical scheme of the embodiment of the utility model is further described in detail below. In the description of the present specification, reference is made to the term "embodiment" or the like means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
The drawings provided in the present embodiment merely illustrate the basic idea of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings, not according to the number, shape and size of the components in actual implementation, the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
As described in the background art, in view of the fact that in the existing flanging device, the efficiency of the spinning mode is low, and the risk of cracking at the welding seam of the cylinder body in the mode of forming by the stamping die is high, the cost is high, and the universality is poor. For this purpose, the improved hump die is used as a flanging of a cylinder, as shown in fig. 1 to 6, the flanging device for the cylinder of the tail gas aftertreatment device comprises an outer die and an inner die arranged on the inner side of the outer die, wherein the inner die comprises a plurality of fan-shaped inner die bodies 1 which can be spliced into a circle, 8 fan-shaped inner die bodies 1 are spliced into a circle in the embodiment, and the outer die comprises a plurality of fan-shaped outer die bodies 2 which can be spliced into a circle; the outer side of the fan-shaped outer die body 2 is provided with a connecting block 3, the fan-shaped outer die body 2 is connected with an external expansion device through the connecting block 3, the external expansion device can drive the fan-shaped outer die body 2 to radially expand and contract, the external expansion device can adopt devices such as an oil hydraulic cylinder, an arc-shaped part of the fan-shaped inner die body 1 towards the outer side is provided with a flanging forming step 4, the inner periphery of the outer die is correspondingly provided with a flanging boss 5, the lower end of the arc-shaped part of the fan-shaped inner die body 1 is provided with a limiting boss 6, the inner side of the outer die is correspondingly provided with a limiting groove 7 matched with the limiting boss 6, an expansion cone 8 is arranged in the center of the fan-shaped inner die body 1, the lower end of the expansion cone 8 is connected with a driving mechanism, the driving mechanism can adopt devices such as an oil hydraulic cylinder and a hydraulic cylinder, when flanging is carried out, a barrel 200 of a tail gas aftertreatment device to be flanged is placed between the outer die body and the inner die, the outer die body is tightened through the external expansion device, the fan-shaped outer die body 2 of the outer die body is circularly encircling the outer side of the barrel 200, then the driving mechanism drives the fan-shaped inner die body 8 to extrude the flanging forming step 4 and the flanging boss 5, the flanging forming step is matched with the flanging boss 200 between the fan-shaped outer die body 1 and the fan-shaped outer die body 2, and the fan-shaped outer die body 2.
The outer surface of the outer mold is connected with an external expansion device, and radial movement is required, so that the outer mold belongs to a cantilever beam structure; simultaneously, when the flanging part is formed, the outer die bears an oblique upward force; the internal mold is relatively fixed and basically does not move upwards. Therefore, the limiting boss 6 is arranged on the inner die, and the outer die is pressed in the movement process of the inner die to prevent the outer die from moving upwards, so that the surface profile of the flanging meets the flanging requirement
In one embodiment, the angle of the forming surface of the flanging forming step 4 of the fan-shaped inner die body is increased by X degrees more than the angle of the flanging of the barrel, X is more than 0 and less than or equal to 10, the angle of the forming surface of the flanging boss of the outer die is increased by Y degrees more than the angle of the flanging of the barrel, Y is more than 0 and less than or equal to 10, the angle of the flanging forming surface is the angle formed by the negative direction of the Y axis and the straight line section of the flanging of the barrel, in one embodiment, X takes 4 degrees, Y takes 6 degrees, in another embodiment, X takes 3 degrees, Y takes 7 degrees, and the angle of the forming positions of the inner die and the outer die is increased by a certain degree more than the angle of the flanging, so that the rebound of the material and the phenomenon of upward deflection of the outer die are improved.
In one embodiment, a barrel limiting step 9 is further arranged at the lower end of the flanging forming step, a height adjusting gasket 10 is arranged on the barrel limiting step 9, the height adjusting gasket 10 is used for adjusting the height of the initial barrel, and finally the diameter of the flanging part is controlled.
In one embodiment, the fan-shaped inner die body 1 comprises a core die 101 and a fan-shaped forming die 102 positioned at the outer side of the core die, the flanging forming step 4 is positioned on the fan-shaped forming die 102, the core die 101 and the fan-shaped forming die 102 are connected together in a matched mode through a wedge block 103 and a wedge groove 104, a plurality of expansion pyramid guide surfaces 801 are arranged on the expansion cone 8 for the number of the fan-shaped inner die body, and a conical surface 105 is arranged at the inner side of the core die 101 and matched with the expansion pyramid guide surfaces 801.
In one embodiment, the outer side of the core mold 101 is provided with a spring clamping groove 11, and the spring is sleeved on the spring clamping groove 11 which surrounds a circle, so that the fan-shaped inner mold body 1 can automatically retract after the flanging is completed and the expansion cone 8 is retracted.
In one embodiment, the lower end of the core mold 101 extending to the fan-shaped forming mold 102 is provided with a bottom boss 106, the bottom boss 106 is provided with an annular cover plate 12 sleeved on the core mold 101, and the annular cover plate 12 is arranged to prevent the core mold from tilting in the process of moving, and prevent impurities from falling into the core mold and affecting the movement of the core mold.
In one embodiment, the lower end of the core mold 101 may be provided with an inner mold turntable (not shown in the figure), the upper end surface of the inner mold turntable is provided with a limiting slot, the lower end surface of the core mold is provided with a limiting block 13, the core mold 101 and the inner mold turntable are connected together through the limiting block 13 and the limiting slot, the inner mold turntable is connected with a rotary driving mechanism for driving the inner mold to rotate, and the inner mold turntable and the outer mold turntable are matched with the expansion cone 8 to expand and contract repeatedly, so that the fan-shaped inner mold body 1 and the fan-shaped outer mold body 2 extrude the barrel 200 repeatedly, and flanging of the barrel is completed.
Referring to fig. 8, in one embodiment, for a short cylinder with a shorter length, in the embodiment, a limiting top plate 14 is fixed at the upper end of the fan-shaped inner die body 1 through the fit of a mounting hole and a bolt, the limiting top plate 14 extends to the outer side of the fan-shaped inner die body, namely the outer side of the fan-shaped outer die body 2, and the short cylinder located between the fan-shaped inner die body 1 and the fan-shaped outer die body 2 of the outer die is limited above, so that the outer die and the cylinder are prevented from being deflected upwards.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (10)
1. The utility model provides a flanging device for tail gas aftertreatment device barrel, includes the external mold and sets up the inboard centre form of external mold, the centre form includes a plurality of fan-shaped internal mold bodies that can splice into circular shape, its characterized in that: the novel flanging die is characterized in that a flanging forming step is arranged at the arc-shaped part of the fan-shaped inner die body, a flanging boss is correspondingly arranged at the inner periphery of the outer die, a limiting boss is arranged at the lower end of the arc-shaped part of the fan-shaped inner die body, a limiting groove matched with the limiting boss is correspondingly arranged at the inner side of the outer die, an expansion cone is arranged at the center of the fan-shaped inner die body, a driving mechanism is connected with the lower end of the expansion cone, the driving mechanism drives the expansion cone to extrude the fan-shaped inner die body, and the flanging forming step is matched with the flanging boss to flanging the cylinder between the fan-shaped inner die body and the outer die.
2. A flanging device for an exhaust gas aftertreatment device cylinder according to claim 1, characterized in that: the angle of the forming surface of the flanging forming step of the fan-shaped inner die body is increased by X degrees more than the angle of the flanging of the cylinder body, X is more than 0 and less than or equal to 10, and the angle of the forming surface of the flanging boss of the outer die is increased by Y degrees more than the angle of the flanging of the cylinder body, and Y is more than 0 and less than or equal to 10.
3. A flanging device for an exhaust gas aftertreatment device cylinder according to claim 1, characterized in that: the lower end of the flanging forming step is also provided with a barrel limiting step, and the barrel limiting step is provided with a height adjusting gasket.
4. A flanging device for an exhaust gas aftertreatment device cylinder according to claim 1, characterized in that: the outer die comprises a plurality of fan-shaped outer die bodies which can be spliced into a round shape; the outside of fan-shaped outer die body is provided with the connecting block, fan-shaped outer die body passes through the connecting block and connects outside harmomegathus device, outside harmomegathus device can drive the radial harmomegathus of fan-shaped outer die body.
5. A flanging device for an exhaust gas aftertreatment device cylinder according to claim 1, characterized in that: the fan-shaped inner die comprises a core die and a fan-shaped forming die arranged on the outer side of the core die, the flanging forming step is arranged on the fan-shaped forming die, and the core die and the fan-shaped forming die are connected together in a matched mode through a wedge-shaped block and a wedge-shaped groove.
6. The flanging device for an exhaust gas aftertreatment device cylinder according to claim 5, wherein: the expansion cone is provided with a plurality of expansion pyramid guide surfaces corresponding to the number of the fan-shaped inner mold bodies, and the inner side of the core mold is provided with a pyramid surface matched with the expansion pyramid guide surfaces.
7. The flanging device for an exhaust gas aftertreatment device cylinder according to claim 5, wherein: the outside of mandrel is provided with the spring draw-in groove, and the spring suit is on enclosing circular spring draw-in groove.
8. The flanging device for an exhaust gas aftertreatment device cylinder according to claim 5, wherein: the core mould extends to the lower end of the fan-shaped forming mould and is provided with a bottom boss, and the bottom boss is provided with an annular cover plate sleeved on the core mould.
9. The flanging device for an exhaust gas aftertreatment device cylinder according to claim 5, wherein: the lower extreme of mandrel is provided with the centre form carousel, the spacing draw-in groove has been seted up on the up end of centre form carousel, be equipped with the stopper on the lower terminal surface of mandrel, the mandrel with link together through stopper and spacing draw-in groove between the centre form carousel.
10. A flanging device for an exhaust gas aftertreatment device cylinder according to claim 1, characterized in that: the upper end of the fan-shaped inner die body is fixedly provided with a limiting top plate in a matched mode through the mounting holes and bolts, and the limiting top plate extends to the outer side of the fan-shaped inner die body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322358914.2U CN220635945U (en) | 2023-08-31 | 2023-08-31 | Flanging device for tail gas aftertreatment device cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322358914.2U CN220635945U (en) | 2023-08-31 | 2023-08-31 | Flanging device for tail gas aftertreatment device cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220635945U true CN220635945U (en) | 2024-03-22 |
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ID=90267337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322358914.2U Active CN220635945U (en) | 2023-08-31 | 2023-08-31 | Flanging device for tail gas aftertreatment device cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220635945U (en) |
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2023
- 2023-08-31 CN CN202322358914.2U patent/CN220635945U/en active Active
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