CN210134997U - Automobile exhaust device - Google Patents

Abstract

The utility model provides an automobile exhaust device, including the foundry goods flange of encapsulation barrel and casting end awl, the tip of encapsulation barrel is provided with spinning and pressure forming's turn-ups flange, turn-ups flange with the encapsulation barrel is integrated into one piece, turn-ups flange with the foundry goods flange of casting end awl passes through the staple bolt and connects. The utility model discloses automobile exhaust apparatus adopts spinning and pressure forming flange to replace machining's flange, has saved the welding seam to reduce product raw and other materials and manufacturing cost greatly.

Description

Automobile exhaust device

Technical Field

The utility model relates to an automobile exhaust system field, in particular to automobile exhaust device.

Background

In an automobile exhaust system, the hot end of an exhaust device is usually connected by adopting a flange bolt connection and a flange hoop connection. Compared with the two forms, the bolt connection in the flange bolt connection occupies a large assembly space and is restricted by the bolt tightening direction. However, the flange hoop occupies a small space in connection, the locking direction is flexible and convenient, the structure of the hot end of the device is more compact, the sealing pressing force is more uniform, and the leakage amount of exhaust gas is less.

Fig. 1 is a schematic structural view of an exhaust apparatus connected by a flange hoop in the prior art. Fig. 2 is an enlarged view of a portion a in fig. 1.

As shown in fig. 1 and 2, a machining flange 30 is installed at the connection position of the device shell 10 (such as a purifier shell) and the cast end cone 20, and welding is adopted between the machining flange 30 and the device shell 10 to form a welding seam 11. The joint of the machining flange 30 and the casting end cone 20 is clamped by a hoop 40, that is, the conical surface of the machining flange 30 and the conical surface of the other connecting flange are assembled oppositely, and the machining flange 30 and the casting end cone 20 are sealed by a sealing ring 31.

When the hoop 40 is radially tightened, the inclined plane of the hoop 40 is pressed on the two conical surfaces, so that an axial clamping force is generated, the planes of the flanges are tightly combined, and the sealing performance of the planes is ensured under the action of the sealing ring 31.

The flange hoop connection structure is relatively high in cost, and therefore the flange hoop connection structure is often used for high-end automobiles. The traditional cylinder body and the cast cone are connected and need to be provided with a machining flange, and the machining flange is welded on the cylinder body. The flange structure is expensive to manufacture.

In view of the above, those skilled in the art have developed structural improvements to automotive exhaust flanges in an effort to overcome the above-described technical and cost problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an automobile exhaust apparatus for the defect that machining flange processing cost is high that overcomes among the prior art exhaust apparatus and adopt.

The utility model discloses a solve above-mentioned technical problem through following technical scheme:

the automobile exhaust device is characterized by comprising a packaging cylinder and a casting flange of a casting end cone, wherein the end part of the packaging cylinder is provided with a flange formed by spinning and pressure, the flange and the packaging cylinder are integrally formed, and the flange and the casting flange of the casting end cone are connected through a hoop.

According to the utility model discloses an embodiment, the turn-ups flange by the tip of encapsulation barrel outwards extends, turns over upward and turns over and form the spinning turn-ups, the spinning turn-ups is again through curling and pressure forming.

According to an embodiment of the invention, the pressure forming is a spin forming or a punch forming.

According to the utility model discloses an embodiment, turn-ups flange is the shaping of curling inwards or the shaping of curling outwards.

According to the utility model discloses an embodiment, be provided with the becket in the turn-ups flange.

According to the utility model discloses an embodiment, hollow shape is trapezoidal, circular, triangle-shaped or rectangle in the turn-ups flange.

According to an embodiment of the utility model, the thickness of encapsulation barrel is 1mm-2mm, the width of turn-ups flange is 12mm-25 mm.

According to the utility model discloses an embodiment, the minimum thickness of turn-ups flange does 0.8 times of the thickness of encapsulation barrel.

According to an embodiment of the present invention, the bevel angle of the cross-section of the flange is 15 ° to 30 °.

According to an embodiment of the present invention, the diameter of the packaging cylinder is 80mm-350 mm.

The utility model discloses an actively advance the effect and lie in:

the utility model discloses automobile exhaust apparatus adopts spinning and pressure forming flange to replace machining's flange, has saved the welding seam to greatly reduced raw and other materials of product and manufacturing cost.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which like reference numerals refer to like features throughout, and in which:

fig. 1 is a schematic structural view of an exhaust apparatus connected by a flange hoop in the prior art.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram of the exhaust device of the present invention.

Fig. 4 is a schematic view of a step of the outward flanging spin-forming of the flanging flange in the exhaust device of the vehicle of the present invention.

Fig. 5 is a schematic view of the second step of the outward flanging spin-forming of the flanging flange in the exhaust device of the vehicle of the present invention.

Fig. 6 is a schematic view of the third step of the flanging pressure forming of the flanging flange in the automobile exhaust device of the present invention.

Fig. 7 is a schematic view of the fourth step of the pressure forming of the outward turned edge of the flanged flange in the exhaust device of the automobile.

Fig. 8 is the schematic diagram of the utility model discloses after flanging flange outward flanging shaping among the automobile exhaust apparatus.

Fig. 9 is an enlarged view of a portion B in fig. 8.

Fig. 10 is a schematic view of a step of spin forming an inner curled edge of a flange of an exhaust device of an automobile according to the present invention.

Fig. 11 is a schematic view of the second step of the spinning forming of the inner curled edge of the flanging flange in the automobile exhaust device of the present invention.

Fig. 12 is a schematic view of the third step of the inward curling pressure forming of the flanging flange in the automobile exhaust device of the present invention.

[ reference numerals ]

Device housing 10

Casting end cone 20

Machining flange 30

Weld seam 11

Hoop 40

Sealing ring 31

Packaging cartridge 100

Casting flange 21

Flanging flange 300

Metal ring 310

Carrier 110

Liner 120

Spinning wheel 400

Outward curl 130

Lower die 500

Groove 510

Upper die 520

First inner spinning wheel 600

First external spinning wheel 610

Second inner spinning wheel 620

Second outer spinning wheel 630

Inward curl 140

Thickness t of the packaging barrel

Width h of flanged flange

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.

Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.

Fig. 3 is a schematic structural diagram of the exhaust device of the present invention.

As shown in fig. 3, the utility model discloses an automobile exhaust device, it includes the foundry goods flange 21 of encapsulation barrel 100 and casting end awl 20, is provided with spinning and pressure forming's turn-ups flange 300 at the tip of encapsulation barrel 100, and turn-ups flange 300 and encapsulation barrel 100 are integrated into one piece, and turn-ups flange 300 passes through staple bolt 40 with the foundry goods flange 21 of casting end awl 20 and is connected.

Preferably, the flange 300 extends outward from the end of the packaging cylinder 100, and is turned upward to form a spinning flange, which is then formed by crimping and pressing. Here, the pressure forming may preferably be spin forming or press forming.

In particular, the flange 300 may preferably be formed by inward rolling or outward rolling. A metal ring 310 may also preferably be provided within the flanged flange 300. Of course, the flanged flange 300 may be provided without a metal ring, which is determined according to the size and the forming condition of the flanged flange.

Of course, the hollow shape in the flange 300 may preferably be trapezoidal, circular, triangular or rectangular. Similarly, the cross-sectional shape of the metal ring 310 may also preferably be trapezoidal, circular, triangular, or rectangular.

The carrier 110 is installed in the packaging cylinder body 100, the gasket 120 is arranged between the carrier 110 and the packaging cylinder body 100, and the flange 300 and the casting flange 21 are sealed through the sealing ring 31.

Fig. 4 is a schematic view of a step of the outward flanging spin-forming of the flanging flange in the exhaust device of the vehicle of the present invention. Fig. 5 is a schematic view of the second step of the outward flanging spin-forming of the flanging flange in the exhaust device of the vehicle of the present invention. Fig. 6 is a schematic view of the third step of the flanging pressure forming of the flanging flange in the automobile exhaust device of the present invention. Fig. 7 is a schematic view of the fourth step of the pressure forming of the outward turned edge of the flanged flange in the exhaust device of the automobile.

As shown in fig. 4 to 7, the flanging flange of the exhaust device of the present invention can be formed by pressing after spinning in an outward curling manner.

First, the metal ring 310 is placed on the outer wall surface of the package cylinder 100.

Then, the spinning wheel 400 is used to feed the end of the packing cylinder 100, so that the end wall surface of the packing cylinder 100 is curled, the outward curled portion 130 is formed, and the metal ring 310 is wrapped.

Next, the packing cylinder 100 is placed in the lower mold 500 with the outward curl portion 130 positioned in the groove 510 at the upper end of the lower mold 500.

Then, the upper mold 520 is used to punch and form the curled structure 130 into a flange structure.

Fig. 10 is a schematic view of a step of spin forming an inner curled edge of a flange of an exhaust device of an automobile according to the present invention. Fig. 11 is a schematic view of the second step of the spinning forming of the inner curled edge of the flanging flange in the automobile exhaust device of the present invention. Fig. 12 is a schematic view of the third step of the inward curling pressure forming of the flanging flange in the automobile exhaust device of the present invention.

As shown in fig. 10 to 12, the flanging flange of the exhaust device of the present invention can be formed by pressing after spinning in an inward curling manner.

First, the first inner spinning wheel 600 is disposed in the inner wall surface of the end portion of the package cylinder 100, and the first outer spinning wheel 610 is disposed on the outer wall surface of the end portion of the package cylinder 100, so as to flatten the wall surface of the end portion of the package cylinder 100.

Then, the second inner spinning wheel 620 is arranged in the inner wall surface of the end portion of the packaging cylinder 100, the second outer spinning wheel 630 is arranged on the outer wall of the end portion of the packaging cylinder 100, the second inner spinning wheel 620 is spun upwards, the end wall surface of the packaging cylinder 100 is screwed upwards into the second outer spinning wheel 630, and the inwards curled portion 140 is formed.

Next, a metal ring 310 is placed within the inward curl.

Then, the packing cylinder 100 is put into the lower mold 500 with the inward curl 140 positioned in the groove 510 of the upper end of the lower mold 500.

Then, the upper mold 520 is used to punch and form the inward curled portion 140 downward to form a flange structure.

Fig. 8 is the schematic diagram of the utility model discloses after flanging flange outward flanging shaping among the automobile exhaust apparatus. Fig. 9 is an enlarged view of a portion B in fig. 8.

As shown in fig. 8 and 9, the thickness t of the packing cylinder 100 in the exhaust device of the present invention is preferably 1mm to 2mm, and accordingly the width h of the flange 300 is preferably 12mm to 25mm, the minimum thickness of the flange 300 may be preferably 0.8 times the thickness t of the packing cylinder 100, the angle α of the oblique side of the cross section of the flange 300 is preferably 15 ° to 30 °, and the diameter D of the packing cylinder 100 is preferably 80mm to 350 mm.

The use of the packaging cartridge 100 may preferably be stainless steel 3 series or 4 series. The flanged flange 300 is a thin-walled structure with a crimped cross-section, and can be divided into an inside and outside crimped form with a filled steel bar (e.g., metal ring) in the middle or in the middle. Whether the metal ring is provided with the flange is determined by the height and the thickness of the flange, the metal ring is filled and plugged in the flanging process, and the cross section of the metal ring is similar to the shape of the hollow inner part, such as a trapezoid, a circle, a triangle, a rectangle and the like.

To sum up, the utility model discloses automobile exhaust apparatus adopts spinning and pressure forming flange structure, replaces the machining flange, has saved the welding seam to greatly reduced raw and other materials and manufacturing cost.

Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are all within the scope of the invention.

Claims (10)

1. The utility model provides an automobile exhaust apparatus, its characterized in that, includes the foundry goods flange of encapsulation barrel and casting end awl, the tip of encapsulation barrel is provided with spinning and pressure forming's turn-ups flange, turn-ups flange with the encapsulation barrel is integrated into one piece, turn-ups flange with the foundry goods flange of casting end awl passes through the staple bolt and is connected.

2. The automotive exhaust of claim 1 wherein the flange extends outwardly from the end of the canister body and is folded upwardly to form a spun-on flange, the spun-on flange then being formed by crimping and pressing.

3. The automotive exhaust system according to claim 2 wherein the press forming is spin forming or punch forming.

4. The exhaust system of claim 3, wherein the flange is formed by inward crimping or outward crimping.

5. The automotive exhaust of claim 2 wherein a metal ring is disposed within the flanged flange.

6. The exhaust apparatus for a vehicle according to claim 2, wherein the hollow shape in the burring flange is trapezoidal, circular, triangular or rectangular.

7. The automotive exhaust system of claim 1 wherein the canister has a thickness of 1mm to 2.0mm and the flange has a width of 12mm to 25 mm.

8. The automotive exhaust of claim 7 wherein the flange has a minimum thickness of 0.8 times the thickness of the canister.

9. The exhaust apparatus for a vehicle according to claim 1, wherein the oblique angle of the cross-sectional side of said flange is 15 ° to 30 °.

10. The automobile exhaust device according to any one of claims 1 to 9, wherein the packing cylinder has a diameter of 80mm to 350 mm.

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