CN209477584U - A muffler exhaust pipe positioning tool - Google Patents

Abstract

The utility model discloses a kind of muffler tail pipe positioning tools, including pedestal, the side of the pedestal is equipped with the location hole corresponding with the exhaust pipe through-hole on silencer muffler partition plate of groove and at least two for installing silencer muffler partition plate, location hole described in the unilateral observation of the groove is equipped with from the pedestal to be located in the groove, and each positioning hole is equipped with positioning column, and the annular gap of the annular tube wall insertion of a permission exhaust pipe is all had between the corresponding location hole of the positioning column.Muffler tail pipe positioning tool described in the utility model, it efficiently solves the problems, such as more difficult across silencer muffler partition plate after more exhaust pipes of silencer are welded to each other, silencer cost of manufacture and scrappage are reduced, Sound Elimination Performance of Mufflers is improved, to manufacture save the cost for vehicle.

Description

A muffler exhaust pipe positioning tool

technical field

The utility model relates to the technical field of fixtures, in particular to a positioning tool for an exhaust pipe of a muffler.

Background technique

The automobile exhaust system is an important part of the automobile. The exhaust system discharges the exhaust gas and also brings the combustion noise to the rear of the vehicle, generating order noise and friction noise with a high sound pressure level at the rear, and the noise is transmitted to the passenger compartment. Some The acoustic cavity modes that may excite the passenger compartment cause resonance in the acoustic cavity of the passenger compartment, seriously affecting the NVH performance of the vehicle. With the improvement of people's living standards, people's requirements for complete vehicles have changed from the initial means of transportation to comfortable household necessities. There is less noise when the car is running, accelerating, and idling. Therefore, the requirements for the design and manufacture of mufflers for automobile exhaust systems have also increased accordingly.

At present, the muffler of the exhaust system is formed by welding together multiple exhaust pipes, and the orientation accuracy of the pipe assembly is low, which makes it difficult for the exhaust pipe to pass through the through hole on the muffler partition. The existing solutions are generally Enlarge the through hole on the partition, or reduce the pipe diameter of the exhaust pipe to ensure that the exhaust pipe can pass through the through hole on the partition. The disadvantages of the above two solutions are: the opening of the through hole of the partition plate is too large, which will cause the noise reduction performance of the muffler to decrease; reducing the pipe diameter of the exhaust pipe will lead to a decrease in pipe precision, high scrap rate, and high cost.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a muffler exhaust pipe positioning tool, which effectively solves the problem that it is difficult for multiple muffler exhaust pipes to pass through the muffler partition after being welded to each other, and reduces the production cost and scrapping of the muffler. Efficiency, improve the muffler performance, thereby saving costs for vehicle manufacturing.

In order to achieve the above purpose, the utility model provides a muffler exhaust pipe positioning tool, including a base, one side of the base is provided with a groove for installing the muffler partition and at least two rows on the muffler partition. The positioning hole corresponding to the trachea through hole is located in the groove when viewed from the side where the groove is provided on the base, and each positioning hole is provided with a positioning column, and There is an annular gap between the positioning column and the corresponding positioning hole, allowing the annular pipe wall of the exhaust pipe to be inserted.

Further, the base includes an exhaust pipe positioning base and a partition positioning base, the positioning column is fixed on the exhaust pipe positioning base; the first bottom surface of the partition positioning base is provided with the concave groove, at least two positioning holes are provided in the groove, and the positioning holes pass through the first bottom surface and the second bottom surface of the partition positioning base; The two bottom surfaces are inserted into the positioning holes.

Further, the height and diameter of each positioning column are different.

Further, the positioning post protrudes from an end of the positioning hole close to the groove.

Further, the positioning base of the partition is also provided with a positioning groove for fixing the head of the noise-proof pipe.

Further, each positioning column is coaxial with its corresponding positioning hole.

Further, the top end of the positioning column is spherical.

Further, there are two positioning holes and two positioning posts.

Further, the materials of the partition plate positioning base and the exhaust pipe positioning base are all mold steel.

Further, the exhaust pipe positioning base is welded to the second bottom surface of the separator positioning base.

A muffler exhaust pipe positioning tool provided by the utility model has the following technical effects compared with the prior art:

The positioning tool for the exhaust pipe of the muffler of the present utility model is provided with a groove for installing the muffler partition and at least two positioning holes corresponding to the through holes of the exhaust pipe on the muffler partition by designing one side of the base , the positioning hole is located in the groove as viewed from the side where the groove is provided on the base, and each positioning hole is provided with a positioning column, and the positioning column and its corresponding positioning hole There is an annular gap between them that allows the annular pipe wall of the exhaust pipe to be inserted; so that after the internal structure of the muffler is welded together with two or more exhaust pipes, the positioning of the exhaust pipe and the exhaust pipe partition When welding, first put the muffler partition into the groove, then align one of the exhaust pipes with its corresponding positioning column and push it forward, adjust the angle between this exhaust pipe and other exhaust pipes so that the other Align the exhaust pipe with the corresponding positioning column, and continue to push the first exhaust pipe until it touches the bottom of the positioning hole. During this process, due to the guiding effect of the positioning column on the other exhaust pipes, the direction of the exhaust pipe can be forced Change to the exact position so that the through holes on the muffler partition are in one-to-one correspondence with the exhaust pipe, and finally remove the sub-assembly composed of the exhaust pipe and the partition from the positioning tool, and weld the exhaust pipe and The contact position of the bulkhead completes the tack welding of the exhaust pipe of the muffler. The muffler exhaust pipe positioning tooling of the utility model solves the problem that multiple pipes of the muffler are difficult to pass through the muffler partition after being welded to each other, reduces the manufacturing cost and scrapping rate of the muffler, improves the muffler performance of the muffler, and thus can be used for vehicle manufacturing. save costs.

Description of drawings

Fig. 1 is the structure schematic diagram one of the muffler exhaust pipe positioning frock of the present utility model;

Fig. 2 is the structural schematic diagram 2 of the muffler exhaust pipe positioning frock of the present utility model;

Fig. 3 is the structure schematic diagram of positioning exhaust pipe of muffler exhaust pipe positioning tool of the utility model;

Fig. 4 is the disassembled structure schematic diagram of positioning exhaust pipe of muffler exhaust pipe positioning tool of the present utility model;

Fig. 5 is a cross-sectional view of the partition positioning base of the muffler exhaust pipe positioning tool of the present invention.

Among them, 1. base, 11. exhaust pipe positioning base, 111. positioning column, 12. partition positioning base, 121. groove, 122. positioning hole, 123. positioning groove, 2. partition, 3. exhaust Tube.

Detailed ways

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplified descriptions, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 to 5, a muffler exhaust pipe positioning tool described in this embodiment includes a base 1, and one side of the base 1 is provided with a groove 121 for installing the muffler partition 2 and at least Two positioning holes 122 corresponding to the through holes of the exhaust pipe on the muffler partition 2, the positioning holes 122 are located in the groove 121 viewed from the side where the groove 121 is provided on the base 1, And each positioning hole 122 is provided with a positioning column 111, and there is an annular gap between the positioning column 111 and the corresponding positioning hole 122 to allow the annular pipe wall of the exhaust pipe 3 to be inserted;

The muffler exhaust pipe positioning tooling of the present utility model is provided with a groove 121 for installing the muffler partition 2 on one side of the base 1 and at least two grooves 121 corresponding to the exhaust pipe through holes on the muffler partition 2 by design. Corresponding positioning holes 122, the positioning holes 122 are located in the grooves 121 viewed from the side of the base 1 provided with the grooves 121, and each positioning hole 122 is provided with a positioning column 111 , and there is an annular gap between the positioning column 111 and the corresponding positioning hole 122 that allows the annular pipe wall of the exhaust pipe 3 to be inserted; At this time, the muffler partition 2 is first installed into the groove 121, and then one of the exhaust pipes is aligned with its corresponding positioning column 111 and pushed forward to adjust the angle between the exhaust pipe and other exhaust pipes. Align the other exhaust pipes with the corresponding positioning columns 111, and continue to advance the first exhaust pipe until it touches the bottom of the positioning hole 122. During this process, due to the guiding effect of the positioning columns on the remaining exhaust pipes, the exhaust The direction of the pipe is forced to change to an accurate position, so that the through holes on the muffler partition 2 correspond to the exhaust pipes one by one, and finally the sub-assembly composed of the exhaust pipe 3 and the partition 2 is removed from the positioning tool Next, weld the contact position between the exhaust pipe 3 and the partition plate 2, and complete the positioning welding of the exhaust pipe of the muffler. The muffler exhaust pipe positioning tooling of the utility model solves the problem that it is difficult for multiple pipes of the muffler to pass through the muffler partition 2 after being welded to each other, reduces the manufacturing cost and scrap rate of the muffler, improves the muffler performance of the muffler, and provides a complete vehicle Manufacturing cost savings.

As shown in Figure 2 and Figure 5, in the embodiment of the present utility model, preferably, the base 1 includes an exhaust pipe positioning base 11 and a partition positioning base 12, and the positioning column 111 is fixed on the exhaust pipe On the tube positioning base 11; the first bottom surface of the partition positioning base 12 is provided with the groove 121, the groove 121 is provided with at least two positioning holes 122 and the positioning holes 122 pass through the The first bottom surface and the second bottom surface of the partition positioning base 12; the positioning column 111 is inserted into the positioning hole 122 from the second bottom surface of the partition positioning base 12.

Preferably, the exhaust pipe positioning base 11 is welded to the second bottom surface of the separator positioning base 12 .

Preferably, the height and diameter of each positioning column 111 are different.

Preferably, the positioning post 111 protrudes from an end of the positioning hole 122 close to the groove 121 . In the embodiment of the present utility model, the length of each positioning column 111 is greater than the thickness of the partition positioning base 12 .

Preferably, each positioning post 111 is coaxial with its corresponding positioning hole 122 .

Preferably, the top of the positioning column 111 is spherical. By designing the top end of the positioning column 111 to be spherical, the positioning column 111 can play a better guiding role.

In the embodiment of the present utility model, preferably, there are two positioning holes 122 and two positioning posts 111 respectively.

In the embodiment of the present utility model, preferably, the materials of the partition plate positioning base 12 and the exhaust pipe positioning base 11 are mold steel. The partition plate positioning base 12 is a square platform, and the exhaust pipe positioning base 11 is a flat plate.

In the embodiment of the present utility model, preferably, the positioning base 12 of the partition is further provided with a positioning groove 123 for fixing the head of the noise-proof pipe, and there are two positioning grooves 123 . When the anti-noise pipe is passed through the through-hole of the anti-noise pipe on the muffler partition 2 and then the noise-proof pipe and the exhaust pipe partition 2 are welded, the Sliding, so when welding, put the anti-noise pipe through the through-hole of the anti-noise pipe on the muffler partition 2 and then insert the pipe head of the anti-noise pipe into the positioning groove 123 for fixing and then welding, which can avoid the movement of the anti-noise pipe , for easy welding.

In summary, the muffler exhaust pipe positioning tool of the present utility model is designed to be provided with a groove 121 for installing the muffler partition 2 and at least two exhaust pipes on the muffler partition 2 on one side of the base 1. The positioning hole 122 corresponding to the through hole, the positioning hole 122 is located in the groove 121 as viewed from the side of the base 1 provided with the groove 121, and each positioning hole 122 is provided with a Positioning column 111, and between described positioning column 111 and its corresponding positioning hole 122, there is an annular gap that allows the annular pipe wall of exhaust pipe 3 to be inserted; 2, first put the muffler partition 2 into the groove 121, and then align one of the exhaust pipes with its corresponding positioning column 111 and push it forward to adjust the distance between the exhaust pipe and other exhaust pipes. The angle between the other exhaust pipes is aligned with the corresponding positioning column 111, and the first exhaust pipe continues to be pushed until it withstands the bottom of the positioning hole 122. During this process, due to the guiding effect of the positioning column on the remaining exhaust pipes, it can be Forcibly change the direction of the exhaust pipe to an accurate position, so that the through holes on the muffler partition 2 correspond to the exhaust pipe one by one, and finally the sub-assembly composed of the exhaust pipe 3 and the partition 2 is positioned Remove the tooling, weld the contact position between the exhaust pipe 3 and the partition plate 2, and complete the positioning welding of the exhaust pipe of the muffler. The muffler exhaust pipe positioning tooling of the utility model solves the problem that it is difficult for multiple pipes of the muffler to pass through the muffler partition 2 after being welded to each other, reduces the manufacturing cost and scrap rate of the muffler, improves the muffler performance of the muffler, and provides a complete vehicle Manufacturing cost savings.

The above are only preferred embodiments of the present utility model, and it should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present utility model, some improvements and replacements can also be made. These improvements and replacements It should also be regarded as the protection scope of the present utility model.

Claims (10)

1. a kind of muffler tail pipe positioning tool, which is characterized in that including pedestal, the side of the pedestal is equipped with for installing The groove of silencer muffler partition plate and at least two location holes corresponding with the exhaust pipe through-hole on silencer muffler partition plate, from the pedestal Location hole described in unilateral observation equipped with the groove is located in the groove, and each positioning hole is equipped with positioning Column, and all had between the corresponding location hole of the positioning column between the annular of annular tube wall insertion of a permission exhaust pipe Gap.

2. muffler tail pipe positioning tool as described in claim 1, which is characterized in that the pedestal includes exhaust pipe positioning Pedestal and partition positioning base, the positioning column are fixed on the exhaust pipe positioning base；The partition positioning base First bottom surface is equipped with the groove, be equipped at least two location holes in the groove and the location hole through it is described every The first bottom surface and the second bottom surface of plate positioning base；Described in the positioning column is inserted into from the second bottom surface of the partition positioning base Positioning hole.

3. muffler tail pipe positioning tool as described in claim 1, which is characterized in that the height of each positioning column, straight Diameter is different.

4. muffler tail pipe positioning tool as described in claim 1, which is characterized in that the positioning column protrudes from described fixed Position hole is close to one end of the groove.

5. muffler tail pipe positioning tool as described in claim 1, which is characterized in that also set on the partition positioning base There is the locating slot for fixing noise control pipe tube head.

6. muffler tail pipe positioning tool as described in claim 1, which is characterized in that each positioning column is right with it The location hole answered is coaxial.

7. muffler tail pipe positioning tool as described in claim 1, which is characterized in that the top of the positioning column is in ball Shape.

8. muffler tail pipe positioning tool as described in claim 1, which is characterized in that the location hole and positioning column difference It is two.

9. muffler tail pipe positioning tool as claimed in claim 2, which is characterized in that the partition positioning base, exhaust The material of pipe positioning base is mould steel.

10. muffler tail pipe positioning tool as claimed in claim 2, which is characterized in that the exhaust pipe positioning base with Second bottom surface of the partition positioning base is welded to connect.