Inner assembly for automatic correction in end cover press-fitting process

Abstract

The utility model discloses an inner component for automatic correction in an end cover press-fitting process, which is mounted on a profiling mold cavity and comprises a guide correction cone, a guide plate, a pressing plate, a pressing plate and a pressing plate, the outer diameter of the guide correction cone is 1mm smaller than the inner diameter of a pipe fitting at the end part of the silencer shell; and the two auxiliary correction pieces are used for limiting the two ends of the end cover plate. According to the utility model, the guide correction cone and the auxiliary correction piece are arranged on the profiling mold cavity, and the guide correction cone can enter a pipe fitting in the press-fitting process of the end cover to forcefully correct the silencer shell to a set axial position, so that the accurate alignment of the end cover and the silencer shell in the press-fitting process is ensured, and the production efficiency is improved. In addition, due to the fact that the two ends of the end cover are limited through the auxiliary correcting pieces, the end cover is prevented from rotating or inclining, the press-fitting precision of the end cover is guaranteed, and the product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive muffler manufacturing technology. More specifically, this utility model relates to an internal component for automatic alignment during the press-fitting of end caps. Background Technology

[0002] In the manufacturing process of automotive mufflers, the precise alignment and reliable fixing of the end cap to the muffler housing are crucial to ensuring the product's sealing performance, structural strength, and noise reduction capabilities. Currently, in industrial production, horizontal servo end cap pressing machines are commonly used to press the end caps. During the pressing operation, the operator first places the end cap into the cavity of the mold and fixes it with locating pins. Then, the housing is sent to the pressing station for pre-alignment with the end cap. Finally, a servo motor is driven to move the pressing head horizontally, thereby pressing the mold cavity connected to the pressing head into the housing according to the designed path, completing the end cap pressing operation.

[0003] The end cap is pressed using a horizontal servo end cap press. Since the end cap is only fixed by a locating pin, the locating pin can only restrict the radial movement of the end cap. If the pressing force direction does not coincide with the axis of the locating pin, the end cap will rotate or tilt around the locating pin during the pressing process, resulting in pressing deviation. This leads to product assembly deformation, low yield, and the need for additional manpower for off-line rework, resulting in high production costs. Summary of the Invention

[0004] Another objective of this invention is to provide an internal component for automatic correction during the press-fitting of end caps, in order to solve the technical problems in the prior art that cause product assembly deformation, low yield, and high production costs due to press-fitting deviations during the end cap press-fitting process.

[0005] To achieve these objectives and other advantages according to this utility model, an internal assembly for automatic alignment during the press-fitting of end caps is provided, which is mounted on the cavity of a molding die, comprising:

[0006] The guide correction cone has one end set on the inner surface of the mold cavity and the other end horizontally protruding from the exhaust port on the end cover plate. The outer diameter of the guide correction cone is 1mm smaller than the inner diameter of the end pipe of the muffler housing.

[0007] Two auxiliary correction components are symmetrically arranged at both ends of the outer surface of the mold cavity. Each auxiliary correction component is connected to the outer wall of the end cover plate. The auxiliary correction component is used to limit the two ends of the end cover plate.

[0008] Preferably, the guide correction cone includes a cone head and a cone column integrally formed with the cone head. Multiple protrusions are spaced apart on the outer side wall of the cone column in the circumferential direction, and any one of the protrusions is arranged along the axial direction of the cone column.

[0009] Preferably, the conical-cylindrical part is welded with a positioning plate at one end away from the conical head, and the guide correction cone is detachably installed on the inner surface of the cavity of the profiled die through the positioning plate.

[0010] Preferably, any auxiliary correction member comprises a mounting hole opened on the cavity of the profiled die, and a Z-shaped support installed on the cavity of the profiled die, one free end of the Z-shaped support is detachably installed on the outer surface of the cavity of the profiled die, and a vacuum chuck is installed on the other free end, the vacuum chuck is adsorbed to the outer surface of the end cover cover plate through the mounting hole.

[0011] Preferably, a vacuum pipeline is installed on the free end of the Z-shaped support where the vacuum chuck is arranged, one end of the vacuum pipeline is communicated with the vacuum chuck, and the other end is communicated with an external vacuumizing device.

[0012] Preferably, the Z-shaped support is a deformable structure.

[0013] The utility model at least includes the following beneficial effects:

[0014] 1. The utility model discloses a guide correction cone and an auxiliary correction member are installed on the cavity of the profiled die, the guide correction cone passes through the exhaust port on the end cover cover plate when the end cover is pressed and mounted, the guide correction cone realizes the primary positioning of the end cover, the two ends of the end cover are limited by the two auxiliary correction members, so that the end cover is fixed in the cavity of the profiled die, the outer diameter size of the guide correction cone is less than the inner diameter size of the muffler shell end part pipe piece 1mm, there is 0.5mm cooperation gap between the guide correction cone and the inner wall of the muffler shell end part pipe piece, the guide correction cone enters the pipe piece during the pressing and mounting process, the muffler shell is corrected to the set axial position by the guide correction cone, so that the accurate alignment of the end cover and the muffler shell during the pressing and mounting process is guaranteed, the rotation or inclination of the end cover is avoided by limiting the two ends of the end cover by the auxiliary correction members, the pressing and mounting precision of the end cover is guaranteed, the product quality is guaranteed, the continuous production quality and efficiency are high, and the product failure rate can be reduced to 0.

[0015] 2. The guide correction cone and the two auxiliary correction members of the utility model are installed on the cavity of the profiled die through bolts, only need to improve the existing tooling die, do not affect the normal production process, do not affect the production rhythm, and do not increase the working hours.

[0016] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by those skilled in the art through the research and practice of the utility model. DRAWINGS

[0017] Figure 1 It is a structure schematic view of the utility model muffler;

[0018] Figure 2 It is the structure schematic view of the profile mold cavity of the utility model;

[0019] Figure 3 It is the sectional view of the profile mold cavity of the utility model;

[0020] Figure 4 It is the structure schematic view of the correction guide cone of the utility model;

[0021] Description of the drawing mark of the specification:

[0022] 1, muffler shell, 2, end cover, 3, pipe fitting, 4, profile mold cavity, 5, guide correction cone, 501, cone head, 502, cone column, 503, convex rib, 504, positioning plate, 6, auxiliary correction piece, 601, Z-shaped support, 602, vacuum pipeline, 603, vacuum chuck. Specific implementation

[0023] The utility model will be further explained in detail in combination with the drawings, so that the person skilled in the art can implement according to the specification text.

[0024] It should be noted that in the description of the utility model, the orientation or position relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0025] As Figures 1-4 Indicated, the utility model provides a kind of for the inner assembly of automatic correction in the process of pressing end cover, it is installed on profile mold cavity 4, include:

[0026] Guide correction cone 5, one end is arranged on the inner surface of profile mold cavity 4, the other end is horizontally worn out on the exhaust port of end cover 2 cover plate, the outer diameter size of the guide correction cone 5 is less than the inner diameter size 1mm of muffler shell 1 end portion pipe fitting 3 arrangement;

[0027] Two auxiliary correction pieces 6, it is symmetrically arranged in the both ends of the outer surface of profile mold cavity 4, any auxiliary correction piece 6 is connected with the outer side wall of the end cover 2 cover plate, and the auxiliary correction piece 6 is used to limit the both ends of the end cover 2 cover plate.

[0028] In the above technical scheme, as Figure 1 、 Figure 2 、 Figure 3As shown, the inner assembly for automatic correction in the process of press-fitting end cover of the utility model comprises guiding correction cone 5 and auxiliary correction member 6 installed on the inner surface and outer lateral wall of profiled die cavity 4 respectively, when press-fitting operation, after the operator puts end cover 2 into profiled die cavity 4, guiding correction cone 5 penetrates the exhaust port on the cover plate of end cover 2, and the initial positioning of end cover 2 is realized through guiding correction cone 5 and profiled die cavity 4, after the initial positioning of end cover 2, the two ends of end cover 2 are limited through two auxiliary correction members 6, so that end cover 2 is fixed firmly in profiled die cavity 4, then the press head is horizontally moved to carry out press-fitting operation of end cover 2 by driving servo motor, because the outer diameter size of guiding correction cone 5 is less than the inner diameter size of end part pipe 3 of muffler shell 1 by 1mm, there is 0.5mm cooperation gap between the inner wall of guiding correction cone 5 and end part pipe 3 of muffler shell 1, during the press-fitting process, guiding correction cone 5 will enter pipe 3, and muffler shell 1 is strongly corrected to the set axial position through guiding correction cone 5, so that the accurate alignment of end cover 2 and muffler shell 1 during the press-fitting process is ensured, and because the two ends of end cover 2 are limited through auxiliary correction member 6, the phenomenon that end cover 2 rotates or inclines is avoided, the press-fitting precision of end cover 2 is ensured, the product quality is ensured, the quality and efficiency of continuous production are high, and the product failure rate can be reduced to 0, if horizontal servo press end cover 2 machine is double station, guiding correction cone 5 and auxiliary correction member 6 are arranged on each profiled die cavity 4, and press-fitting is carried out on end cover 2 at the two ends of muffler shell 1 through two profiled die cavities 4.

[0029] In another technical solution, the guiding correction cone 5 comprises a cone head 501 and a cone column 502 integrally formed with the cone head 501, a plurality of convex ribs 503 are arranged on the outer lateral wall of the cone column 502 in a circumferential direction.

[0030] In this technical solution, as shown, Figure 4 The plurality of convex ribs 503 arranged on the outer lateral wall of the guiding correction cone 5 are arranged in a spaced manner along the outer periphery of the guiding correction cone 5, which can effectively resist the misalignment caused by the slight deformation of the pipe 3 and ensure the alignment accuracy, and the convex ribs 503 can reduce the contact area between the guiding correction cone 5 and the inner wall of the pipe 3, avoiding the deformation or scratching of the inner wall of the pipe 3 due to excessive local stress.

[0031] In another technical solution, a positioning plate 504 is welded to the end of the cone column 502 away from the cone head 501, and the guiding correction cone 5 is detachably installed on the inner surface of the profiled die cavity 4 through the positioning plate 504.

[0032] In this technical solution, bolt holes can be made at the installation positions of the guide correction cone 5 corresponding to the cavity 4 of the copying mold, and bolt holes can be made on the positioning plate 504 accordingly. The bolts pass through the bolt holes on the positioning plate 504 and the cavity 4 of the copying mold, and the guide correction cone 5 is installed on the cavity of the copying mold by means of nuts. When the guide correction cone 5 is worn due to repeated use, affecting the limit guidance accuracy and production quality, the detachable installation method facilitates the replacement of the guide correction cone 5.

[0033] In another technical solution, any auxiliary correction component 6 includes a mounting hole opened on the mold cavity 4 and a Z-shaped bracket 601 mounted on the mold cavity 4. One free end of the Z-shaped bracket 601 is detachably mounted on the outer surface of the mold cavity 4, and a vacuum suction cup 603 is mounted on the other free end. The vacuum suction cup 603 passes through the mounting hole and adsorbs onto the outer surface of the end cover 2 cover plate.

[0034] The Z-shaped bracket 601 is provided with a vacuum suction cup 603. A vacuum tube 602 is installed on the free end of the vacuum suction cup 603. One end of the vacuum tube 602 is connected to the vacuum suction cup 603, and the other end is connected to an external vacuum pumping device.

[0035] In this technical solution, such as Figure 3 As shown, mounting holes are provided on the cavity 4 of the copying mold corresponding to the end of the end cap 2. One free end of the Z-shaped bracket 601 is bolted to the outer surface of the cavity 4 of the copying mold, and the other free end is connected to the suction cup 603 through the vacuum line 602. The suction cup 603 passes through the mounting hole and fits against the outer surface of the end cap 2 cover plate. The suction cup 603 is adsorbed onto the outer surface of the end cap 2 cover plate by drawing a vacuum with an external vacuuming device, thereby limiting the position of both ends of the end cap 2 cover plate. The installation position of the Z-shaped bracket 601 does not interfere with the pressure head. The guide correction cone 5 and the two auxiliary correction parts 6 are all bolted to the cavity 4 of the copying mold. Only the existing tooling mold needs to be improved, without affecting the normal production process, the production cycle, or increasing the working time.

[0036] In another technical solution, the Z-shaped bracket 601 is a deformable structure.

[0037] In this technical solution, since the outer surface of the end cover 2 is curved, the Z-shaped bracket 601 is a deformable structure that allows the suction cup 603 to fit tightly against the outer surface of the end cover 2, ensuring the limiting effect on the end cover 2. The Z-shaped bracket 601 can be made of aluminum alloy.

[0038] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An internal component for automatic correction during the pressing process of end caps, which is installed on the cavity of a molding die, characterized in that, include: The guide correction cone has one end set on the inner surface of the mold cavity and the other end horizontally protruding from the exhaust port on the end cover plate. The outer diameter of the guide correction cone is 1mm smaller than the inner diameter of the end pipe of the muffler housing. Two auxiliary correction components are symmetrically arranged at both ends of the outer surface of the mold cavity. Each auxiliary correction component is connected to the outer wall of the end cover plate. The auxiliary correction component is used to limit the two ends of the end cover plate.

2. The internal component for automatic correction during the press-fitting of end caps as described in claim 1, characterized in that, The guide correction cone includes a cone head and a cone column integrally formed with the cone head. Multiple protrusions are spaced along the circumference of the outer wall of the cone column, and any one of the protrusions is arranged along the axial direction of the cone column.

3. The internal component for automatic correction during the press-fitting of end caps as described in claim 2, characterized in that, A positioning plate is welded to one end of the cone column away from the cone head, and the guide correction cone is detachably mounted on the inner surface of the mold cavity via the positioning plate.

4. The internal component for automatic correction during the press-fitting of end caps as described in claim 1, characterized in that, Any auxiliary correction component includes a mounting hole formed on the cavity of the copying mold, and a Z-shaped bracket mounted on the cavity of the copying mold. One free end of the Z-shaped bracket is detachably mounted on the outer surface of the cavity of the copying mold, and a vacuum suction cup is mounted on the other free end. The vacuum suction cup passes through the mounting hole and adheres to the outer surface of the end cap plate.

5. The internal component for automatic correction during the press-fitting of end caps as described in claim 4, characterized in that, The Z-shaped bracket is equipped with a vacuum suction cup, and a vacuum pipeline is installed on the free end of the vacuum pipeline. One end of the vacuum pipeline is connected to the vacuum suction cup, and the other end is connected to an external vacuum pumping device.

6. The internal component for automatic correction during the press-fitting of end caps as described in claim 4, characterized in that, The Z-shaped support is a deformable structure.

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