Cut-off die for air outlet taper pipe shell of automobile engine exhaust system

Abstract

The invention discloses a cut-off die for an air outlet taper pipe shell of an automobile engine exhaust system, and relates to the technical field of stamping machining of automobile parts, the cut-off die comprises a supporting unit, a connecting piece, an upper die unit, an upper die assembly arranged at the top of the connecting piece, and a stamping assembly arranged in the upper die assembly. Through the integrated operation of material conveying, punch forming, edge cutting-off and automatic discharging, the limitation that a traditional punching technology is multiple in working procedure and prone to errors is broken through, the production period is greatly shortened, the production efficiency is improved, the device can efficiently conduct batch production, the time for equipment shutdown adjustment is shortened, through cooperation of the punching assembly and the bearing assembly, the production efficiency is improved, and the production cost is reduced. And through precise control of the hydraulic cylinder, the workpiece wrinkling phenomenon is effectively avoided, and it is guaranteed that the surface of the punched conical pipe is smooth, and the size precision is high.

Description

Technical Field

[0001] The invention relates to the technical field of stamping processing of automobile parts, in particular to a cutting die for a shell of an exhaust cone pipe of an automobile engine exhaust system. Background Art

[0002] The exhaust cone is generally used at the hot end of the exhaust system of an automobile engine. When installed, one end is connected to the purifier carrier and the other end is connected to the flange on the engine side. The components require high precision. In the past, most of these components were stainless steel precision castings, so their processing costs were high and their processing efficiency was low. In order to reduce the processing cost of these components and improve the processing efficiency, stamping processing methods are now gradually being used to produce these components.

[0003] At present, when stamping the outer shell of the exhaust cone pipe, a large number of wrinkles will appear on the surface of the workpiece, which seriously affects the processing quality. At the same time, the stamped workpiece needs to be processed again to remove excess material and burrs around the workpiece, making the operation cumbersome and complicated. In addition, because the outer shell of the exhaust cone pipe has a conical shape, manual material cutting is required when the stamping is completed, which affects production efficiency and cannot be completed automatically. Summary of the invention

[0004] In view of the problems existing in the cutting die of the outer shell of the outlet cone pipe of the exhaust system of the above-mentioned existing automobile engine, the present invention is proposed.

[0005] Therefore, the present invention provides a cutting die for the outer shell of an exhaust cone pipe of an automobile engine exhaust system, the purpose of which is to solve the problem that the workpiece is wrinkled when the exhaust cone pipe outer shell is stamped, the workpiece needs to be cut again after the stamping is completed, and the workpiece after stamping and cutting cannot be automatically unloaded.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a supporting unit, comprising a connecting member; an upper die unit, comprising an upper die assembly disposed on the top of the connecting member, and a stamping assembly disposed inside the upper die assembly; and, The lower die unit comprises a lower die assembly arranged at the bottom of the connecting member and a receiving assembly arranged at the top of the lower die assembly, and the receiving assembly cooperates with the stamping assembly.

[0007] As a preferred solution of the cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system described in the present invention, the upper die assembly includes a cover plate arranged on the top of the connecting piece, a connecting block arranged at the bottom of the cover plate, a receiving plate arranged at the bottom of the connecting block, a stamping buffer column arranged inside the receiving plate, and a guide plate slidably arranged on the outer diameter of the stamping buffer column, and the guide plate is connected to the stamping assembly.

[0008] As a preferred solution of the cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system of the present invention, a buffer member 1 is provided at the bottom of the cover plate, and the bottom of the buffer member 1 cooperates with the stamping assembly.

[0009] As a preferred solution of the cutting die of the outer shell of the exhaust cone pipe of the automobile engine exhaust system described in the present invention, the stamping assembly includes a hydraulic cylinder arranged on the top of the cover plate, a pushing rod arranged at the output end of the hydraulic cylinder, a stamping part arranged on the outer diameter of the pushing rod, and a top block arranged at the bottom of the pushing rod.

[0010] As a preferred solution of the cutting die for the housing of the exhaust cone pipe of the automobile engine exhaust system of the present invention, a conical stamping block is provided at the bottom of the stamping part, and the conical stamping block is slidably connected to the top block.

[0011] As a preferred solution of the cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system described in the present invention, a movable groove is arranged inside the stamping part, a return spring 1 is arranged inside the movable groove, a T-shaped cutter is arranged at the bottom of the return spring 1, and the T-shaped cutter is slidably connected to the stamping part.

[0012] As a preferred solution of the cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system of the present invention, the lower die assembly includes a connecting plate arranged at the bottom of the connecting piece, a supporting block arranged at the bottom of the connecting plate, a bottom plate arranged at the bottom of the supporting block, and a material guide column arranged at the top of the bottom plate, and the top of the material guide column is connected to the receiving assembly.

[0013] As a preferred solution of the cutting die for the housing of the exhaust cone pipe of the automobile engine exhaust system of the present invention, a material feeding piece is provided at the bottom of the connecting plate, and the material feeding piece is connected to the material guiding column.

[0014] As a preferred solution of the cutting die of the outer shell of the exhaust cone pipe of the automobile engine exhaust system described in the present invention, the receiving assembly includes a receiving part arranged on the top of the connecting plate, a conveying wheel arranged on the top of the receiving part, a cutting groove arranged inside the receiving part, and a conical stamping groove arranged inside the receiving part, and the conical stamping groove is slidably connected to the conical stamping block.

[0015] As a preferred solution of the cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system described in the present invention, wherein: a second return spring is arranged inside the receiving part, a second buffer is arranged at the other end of the second return spring, and the top of the second buffer cooperates with the stamping buffer column.

[0016] The beneficial effects of the present invention are as follows: through the integrated operation of material conveying, stamping, edge cutting and automatic unloading, the limitations of the traditional stamping process of multiple processes and easy errors are broken through, the production cycle is greatly shortened, the production efficiency is improved, the device can be efficiently mass-produced, and the equipment downtime adjustment time is reduced. Through the coordination of the stamping components and the receiving components, and the precise control of the hydraulic cylinder, the wrinkling phenomenon of the workpiece is effectively avoided, and the surface of the stamped conical tube is guaranteed to be flat and the dimensional accuracy is high. In addition, the T-type cutter is used to accurately remove impurities and burrs generated in the stamping process, so that the appearance of the workpiece is more neat and beautiful, the edge quality is guaranteed, and the strict requirements for product quality are met. At the same time, the entire stamping process does not require manual intervention, which greatly reduces the manual operation links, reduces the direct contact between humans and equipment, and reduces the risk of accidental injuries to workers during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The present invention is a schematic diagram of the overall structure of a cutting die for the outer shell of an exhaust cone pipe of an automobile engine exhaust system.

[0019] Figure 2 The present invention is a schematic diagram of the structure of a cutting die for the outer shell of an exhaust cone pipe of an automobile engine exhaust system in a bottom view.

[0020] Figure 3 The present invention is a schematic structural diagram of an upper die assembly of a cutting die for a housing of an exhaust cone pipe of an automobile engine exhaust system.

[0021] Figure 4 The invention is a cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system Figure 3 An enlarged schematic diagram of point A.

[0022] Figure 5 The present invention is a schematic cross-sectional view of an upper die assembly of a cutting die for a housing of an exhaust cone pipe of an automobile engine exhaust system.

[0023] Figure 6 The invention is a cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system Figure 5 An enlarged schematic diagram of point B.

[0024] Figure 7 The present invention is a schematic structural diagram of a lower die assembly of a cutting die for a housing of an exhaust cone pipe of an automobile engine exhaust system.

[0025] Figure 8 The present invention is a schematic diagram of the internal structure of the lower die assembly of the cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system.

[0026] Fig. 9 The present invention is a schematic cross-sectional structure diagram of a lower die assembly of a cutting die for a housing of an exhaust cone pipe of an automobile engine exhaust system.

[0027] Fig.10 The invention is a cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system Fig. 9 Enlarged schematic diagram of point C.

[0028] Description of reference numerals: 100, support unit; 101, connecting member; 200, upper die unit; 201, upper die assembly; 2011, cover plate; 2012, connecting block; 2013, receiving plate; 2014, buffer member 1; 2015, stamping buffer column; 2016, guide plate; 202, stamping assembly; 2021, hydraulic cylinder; 2022, stamping member; 2023, moving groove; 2024, return spring 1; 2025, T-type cutter; 2 026, conical punching block; 2027, pushing rod; 2028, top block; 300, lower die unit; 301, lower die assembly; 3011, bottom plate; 3012, supporting block; 3013, connecting plate; 3014, material guide column; 3015, material feeding part; 302, receiving assembly; 3021, receiving part; 3022, reset spring 2; 3023, buffer part 2; 3024, conical punching groove; 3025, cutting groove; 3026, conveying wheel. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1, reference Figure 1 - Figure 2 , which is the first embodiment of the present invention, provides a cutting die for the outer shell of the exhaust cone pipe of the exhaust system of an automobile engine. The device includes: a support unit 100, an upper die unit 200 and a lower die unit 300.

[0031] Wherein, the support unit 100 includes a connecting member 101; The upper die unit 200 includes an upper die assembly 201 disposed on the top of the connecting member 101, and a punching assembly 202 disposed inside the upper die assembly 201. During the process of punching and cutting the material, the operator places the material on the top of the receiving assembly 302 and the material is conveyed and laid flat on the top of the receiving member 3021 by the conveying wheel 3026 inside the receiving assembly 302. Then the punching assembly 202 starts to work and starts to move downward with the cooperation of the upper die assembly 201. The punching assembly 202 moves. During the process, the upper die assembly 201 positions and moves downward, so that the stamping assembly 202 can accurately stamp on the material, and then squeeze the material into the inside of the receiving assembly 302, so that the material is stamped and formed by the stamping assembly 202. After the material is stamped into a cone tube, the stamping assembly 202 continues to move downward, so that the push rod 2027 and the top block 2028 inside the stamping assembly 202 can open the bottom of the formed material, and the stamped open waste is discharged and collected under the guidance of the lower die assembly 301; The lower die unit 300 includes a lower die assembly 301 disposed at the bottom of the connecting member 101, and a receiving assembly 302 disposed at the top of the lower die assembly 301, and the receiving assembly 302 cooperates with the punching assembly 202. When the push rod 2027 and the top block 2028 open the bottom of the material, the punching member 2022 also carries the T-shaped cutter 2025 to squeeze the inside of the receiving assembly 302 again, so that the T-shaped cutter 2025 can cut off the edge of the material that has been stamped and removed the surrounding of the molded material. burrs. After the punching and cutting are completed, the punching assembly 202 moves upward. During the upward movement of the punching assembly 202, due to the shape of the tapered tube, the completed tapered tube moves upward together with the punching assembly 202. When the punching part 2022 is separated from the top of the receiving assembly 302, the return spring 2024 at the top of the T-shaped cutter 2025 releases the extrusion, pushing the T-shaped cutter 2025 to move downward and push the tapered tube formed on the tapered punching block 2026, so that the tapered tube automatically falls off to complete the blanking.

[0032] During use, in the process of stamping and cutting the material, the operator places the material on the top of the receiving component 302 and is transported and laid flat to the top of the receiving part 3021 by the conveying wheel 3026 inside the receiving component 302. Then the stamping component 202 starts to work and starts to move downward with the cooperation of the upper die component 201. During the movement of the stamping component 202, the upper die component 201 positions and moves it downward, so that the stamping component 202 can be accurately stamped on the material, and then the material is squeezed into the inside of the receiving component 302, so that the material is stamped and formed by the stamping component 202. After the material is stamped into a conical tube, the stamping component 202 continues to move downward, so that the pushing rod 2027 and the top block 2028 inside the stamping component 202 can open the bottom of the formed material, and the opened waste material after stamping is discharged and collected under the guidance of the lower die component 301. At the same time as the top block 2028 opens the bottom of the material, the stamping part 2022 also carries the T-shaped cutter 2025 to extrude the inside of the receiving component 302 again, so that the T-shaped cutter 2025 can cut the edge of the material that has been stamped and formed, and remove the burrs around the formed material. After the stamping and cutting are completed, the stamping component 202 moves upward. During the upward movement of the stamping component 202, due to the shape of the tapered tube, the completed tapered tube moves upward together with the stamping component 202. When the stamping part 2022 is separated from the top of the receiving component 302, the return spring 2024 at the top of the T-shaped cutter 2025 releases the extrusion, pushing the T-shaped cutter 2025 to move downward to push the tapered tube formed on the tapered stamping block 2026, so that the tapered tube automatically falls off to complete the unloading, and the stamping component 202 and the receiving component 302 cooperate to make the stamping one-piece, which effectively avoids the wrinkling of the workpiece.

[0033] Example 2, reference Figure 1 - Figure 6, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the upper die assembly 201 includes a cover plate 2011 arranged on the top of the connecting member 101, a connecting block 2012 arranged at the bottom of the cover plate 2011, a receiving plate 2013 arranged at the bottom of the connecting block 2012, a stamping buffer column 2015 arranged inside the receiving plate 2013, and a guide plate 2016 slidably arranged on the outer diameter of the stamping buffer column 2015, and the guide plate 2016 is connected to the stamping assembly 202, and a buffer member 2014 is arranged at the bottom of the cover plate 2011, and the bottom of the buffer member 2014 cooperates with the stamping assembly 202. After the material to be stamped is placed on the top of the receiving assembly 302, the hydraulic cylinder 2021 starts to work, so that the stamping member 2022 starts to move downward, and when the stamping member 2022 moves downward, the guide plate 2016 and the stamping buffer column 2015 move downward together until The stamping part 2022 with the conical stamping block 2026 is attached to the top of the material. As the stamping part 2022 and the conical stamping block 2026 continue to stamp, the material is stamped into the interior of the receiving component 302, thereby completing the stamping of the material and making the material into a conical tube shape. After the material is stamped into the conical tube, the hydraulic cylinder 2021 continues to move, so that the push rod 2027 inside the stamping part 2022 with the top block 2028 continues to move toward the bottom of the formed conical tube. The bottom of the cone tube is opened by punching, and the waste material falling by punching is collected by the lower die assembly 301. While the bottom of the cone tube of the pushing rod 2027 and the top block 2028 is punched for the second time, the punching part 2022 and the T-shaped cutter 2025 inside the punching part 2022 also punch downwards once to cut off the burrs and waste material around the formed cone tube, so that the cone tube is formed in one piece by the second punching, which can effectively prevent wrinkles on the surface of the formed cone tube.

[0034] Compared with Example 1, further, the stamping assembly 202 includes a hydraulic cylinder 2021 arranged on the top of the cover plate 2011, a pushing rod 2027 arranged at the output end of the hydraulic cylinder 2021, a stamping piece 2022 arranged on the outer diameter of the pushing rod 2027, and a top block 2028 arranged at the bottom of the pushing rod 2027, a conical stamping block 2026 is arranged at the bottom of the stamping piece 2022, and the conical stamping block 2026 is slidably connected with the top block 2028, a moving groove 2023 is arranged inside the stamping piece 2022, a return spring 2024 is arranged inside the moving groove 2023, a T-shaped cutter 2025 is arranged at the bottom of the return spring 2024, and the T-shaped cutter 2025 is slidably connected with the stamping piece 2022, after the workpiece is stamped, the hydraulic cylinder 2021 drives the stamping piece 2022 and the conical stamping block 2026 to move. The conical stamping block 2026 moves upward. When the conical stamping block 2026 moves upward, due to the shape of the stamped conical tube, the conical tube fits on the outer diameter of the conical stamping block 2026 and moves upward together. When the stamping part 2022 is separated from the top of the receiving assembly 302, the return spring 2024 inside the stamping part 2022 releases the extrusion, generating a reaction force to squeeze the T-shaped cutter 2025 out of the stamping part 2022. When the return spring 2024 squeezes the T-shaped cutter 2025 out of the stamping part 2022, the T-shaped cutter 2025 pushes the conical tube formed on the outer diameter of the conical stamping block 2026, so that the conical tube falls off the outer diameter of the conical stamping block 2026 to complete the automatic unloading, thereby completing the entire process of automatic loading, stamping, cutting and unloading, thereby improving production efficiency.

[0035] During use, after the material to be stamped is placed on the top of the receiving component 302, the hydraulic cylinder 2021 starts to work, causing the stamping part 2022 to start moving downward, and while the stamping part 2022 moves downward, the guide plate 2016 and the stamping buffer column 2015 move downward together until the stamping part 2022 and the conical stamping block 2026 are attached to the top of the material. As the stamping part 2022 and the conical stamping block 2026 continue to stamp, the material is stamped into the interior of the receiving component 302, thereby completing the stamping of the material and turning the material into a conical tube shape. After the material is stamped into the conical tube, The hydraulic cylinder 2021 continues to move, so that the pushing rod 2027 inside the stamping part 2022 continues to stamp the bottom of the already formed conical tube with the top block 2028 to complete the opening of the bottom of the conical tube, and the waste material falling by the stamping is collected by the lower die assembly 301. While the pushing rod 2027 and the top block 2028 perform a secondary stamping on the bottom of the conical tube, the stamping part 2022 and the T-shaped cutter 2025 inside the stamping part 2022 also perform a downward stamping to cut off the burrs and waste material around the formed conical tube, so that the conical tube is formed in one piece by the secondary stamping, which can effectively prevent wrinkles on the surface of the formed conical tube.

[0036] After the workpiece is stamped, the hydraulic cylinder 2021 drives the stamping part 2022 and the conical stamping block 2026 to move upward. When the conical stamping block 2026 moves upward, the conical tube fits on the outer diameter of the conical stamping block 2026 due to the shape of the stamped conical tube, and moves upward together. When the stamping part 2022 is separated from the top of the receiving assembly 302, the return spring 2024 inside the stamping part 2022 releases the extrusion, generating a reaction force to squeeze the T-shaped cutter 2025 out of the inside of the stamping part 2022. When the reset spring 2024 pushes the T-cutter 2025 out of the inside of the stamping part 2022, the T-cutter 2025 pushes the tapered tube formed on the outer diameter of the tapered stamping block 2026, so that the tapered tube falls off the outer diameter of the tapered stamping block 2026 to complete the automatic unloading, thereby completing the entire process of automatic loading, stamping, cutting and unloading. The T-cutter 2025 is used to accurately remove impurities and burrs generated during the stamping process, making the appearance of the workpiece more neat and beautiful, and the edge quality is guaranteed, meeting the strict requirements on product quality.

[0037] The remaining structures are the same as those of Example 1.

[0038] Example 3, reference Figure 1 - Fig.10, which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the lower mold assembly 301 includes a connecting plate 3013 arranged at the bottom of the connecting member 101, a supporting block 3012 arranged at the bottom of the connecting plate 3013, a bottom plate 3011 arranged at the bottom of the supporting block 3012, and a material guide column 3014 arranged at the top of the bottom plate 3011, and the top of the material guide column 3014 is connected to the receiving assembly 302, and the bottom of the connecting plate 3013 is provided with a material feeding member 3015, and the material feeding member 3015 is connected to the material guide column 301 4 connection, the receiving assembly 302 includes a receiving member 3021 disposed on the top of the connecting plate 3013, a conveying wheel 3026 disposed on the top of the receiving member 3021, a cutting groove 3025 disposed inside the receiving member 3021, a conical stamping groove 3024 disposed inside the receiving member 3021, and the conical stamping groove 3024 is slidably connected to the conical stamping block 2026, a return spring 2 3022 is disposed inside the receiving member 3021, and a buffer 2 3023 is disposed at the other end of the return spring 2 3022, and the buffer 2 3023 The top of the stamping buffer column 2015 cooperates with the stamping buffer column 2015. After the material is placed on the conveying wheel 3026, the material is conveyed to the top of the receiving part 3021 by the conveying wheel 3026. When the stamping component 202 starts to stamp downward, the buffer part 2 3023 and the return spring 2 3022 fit with the stamping buffer column 2015 on the top to buffer the stamping of the stamping component 202. When the stamping component 202 stamps the material into the inside of the conical stamping groove 3024, the material is formed in one piece. When the stamping component 202 is stamped for the second time, The generated waste is guided by the guide column 3014 to the inside of the feed piece 3015, and the waste is discharged and processed through the feed piece 3015. At the same time, when the T-type cutter 2025 cuts the formed conical tube, the cutting groove 3025 cooperates with it, so that the impurities and burrs around the conical tube can be directly cut off and removed at one time, reducing the equipment downtime adjustment time. Through the precise control of the stamping component 202 and the receiving component 302, the wrinkling phenomenon of the workpiece is effectively avoided, ensuring that the surface of the stamped conical tube is smooth and the dimensional accuracy is high.

[0039] During use, after the material is placed on the conveying wheel 3026, the material is conveyed to the top of the receiving part 3021 by the conveying wheel 3026. When the stamping assembly 202 starts to stamp downward, the buffer part 2 3023 and the return spring 2 3022 are fitted with the stamping buffer column 2015 on the top to buffer the stamping of the stamping assembly 202, and when the stamping assembly 202 stamps the material into the inside of the conical stamping groove 3024, the material is formed in one piece. When the stamping assembly 202 is stamped for the second time, the waste material generated is guided by the guide column 3014 to the inside of the material feeding part 3015, and the waste material is fed into the material feeding part 3015 through the material feeding part 3015. At the same time, when the T-cutters 2025 cut the formed conical tubes, the cutting grooves 3025 cooperate with them, so that the impurities and burrs around the conical tubes can be directly cut off and removed at one time, reducing the time for equipment downtime adjustment. The stamping components 202 and the receiving components 302 cooperate with each other for precise control, effectively avoiding the wrinkling of the workpiece, ensuring that the surface of the stamped conical tubes is smooth and the dimensional accuracy is high, meeting the strict requirements for product quality. At the same time, the entire stamping process does not require manual intervention, which greatly reduces the manual operation links, reduces the direct contact between manual operation and equipment, and reduces the risk of accidental injuries to workers during operation.

[0040] The remaining structure is the same as that of Example 2.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A cutting die for the outer shell of the exhaust cone pipe of an automobile engine exhaust system, characterized in that: include: A support unit (100) comprising a connecting member (101); An upper die unit (200) comprises an upper die assembly (201) arranged on the top of the connecting member (101), and a punch assembly (202) arranged inside the upper die assembly (201); and, A lower die unit (300) comprises a lower die assembly (301) arranged at the bottom of the connecting member (101), and a receiving assembly (302) arranged at the top of the lower die assembly (301), wherein the receiving assembly (302) cooperates with the stamping assembly (202); The punching assembly (202) comprises a hydraulic cylinder (2021) arranged at the top of the upper die assembly (201), a pushing rod (2027) arranged at the output end of the hydraulic cylinder (2021), a punching piece (2022) arranged on the outer diameter of the pushing rod (2027), and a top block (2028) arranged at the bottom of the pushing rod (2027); A conical stamping block (2026) is provided at the bottom of the stamping part (2022), and the conical stamping block (2026) is slidably connected to the top block (2028); A movable groove (2023) is arranged inside the stamping part (2022), a return spring (2024) is arranged inside the movable groove (2023), a T-shaped cutter (2025) is arranged at the bottom of the return spring (2024), and the T-shaped cutter (2025) is slidably connected to the stamping part (2022).

2. The cutting die for the outer shell of the exhaust cone pipe of the automobile engine exhaust system according to claim 1, characterized in that: The upper die assembly (201) comprises a cover plate (2011) arranged on the top of the connecting member (101), a connecting block (2012) arranged on the bottom of the cover plate (2011), a receiving plate (2013) arranged on the bottom of the connecting block (2012), a stamping buffer column (2015) arranged inside the receiving plate (2013), and a guide plate (2016) slidably arranged on the outer diameter of the stamping buffer column (2015), wherein the guide plate (2016) is connected to the stamping assembly (202); a buffer component 1 (2014) is arranged on the bottom of the cover plate (2011), and the bottom of the buffer component 1 (2014) cooperates with the stamping assembly (202).

3. The cutting die for the housing of the exhaust cone pipe of the automobile engine exhaust system according to claim 2, characterized in that: The lower mold assembly (301) comprises a connecting plate (3013) arranged at the bottom of the connecting member (101), a supporting block (3012) arranged at the bottom of the connecting plate (3013), a bottom plate (3011) arranged at the bottom of the supporting block (3012), and a material guide column (3014) arranged at the top of the bottom plate (3011), and the top of the material guide column (3014) is connected to the receiving assembly (302).

4. The cutting die for the housing of the exhaust cone pipe of the automobile engine exhaust system according to claim 3, characterized in that: A material feeding piece (3015) is provided at the bottom of the connecting plate (3013), and the material feeding piece (3015) is connected to the material guiding column (3014).

5. The cutting die for the housing of the exhaust cone pipe of the automobile engine exhaust system according to claim 4, characterized in that: The receiving assembly (302) comprises a receiving member (3021) arranged at the top of the connecting plate (3013), a conveying wheel (3026) arranged at the top of the receiving member (3021), a cutting groove (3025) arranged inside the receiving member (3021), and a conical stamping groove (3024) arranged inside the receiving member (3021), wherein the conical stamping groove (3024) is slidably connected to the conical stamping block (2026).

6. The cutting die for the housing of the exhaust cone pipe of the automobile engine exhaust system according to claim 5, characterized in that: A second return spring (3022) is arranged inside the receiving member (3021), a second buffer member (3023) is arranged at the other end of the second return spring (3022), and the top of the second buffer member (3023) cooperates with the stamping buffer column (2015).

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